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khays |
/* 32-bit ELF support for ARM
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Copyright 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
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2008, 2009, 2010, 2011 Free Software Foundation, Inc.
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This file is part of BFD, the Binary File Descriptor library.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
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MA 02110-1301, USA. */
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#include "sysdep.h"
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#include <limits.h>
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#include "bfd.h"
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#include "libiberty.h"
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#include "libbfd.h"
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#include "elf-bfd.h"
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#include "elf-vxworks.h"
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#include "elf/arm.h"
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/* Return the relocation section associated with NAME. HTAB is the
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bfd's elf32_arm_link_hash_entry. */
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#define RELOC_SECTION(HTAB, NAME) \
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((HTAB)->use_rel ? ".rel" NAME : ".rela" NAME)
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/* Return size of a relocation entry. HTAB is the bfd's
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elf32_arm_link_hash_entry. */
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#define RELOC_SIZE(HTAB) \
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((HTAB)->use_rel \
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? sizeof (Elf32_External_Rel) \
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: sizeof (Elf32_External_Rela))
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/* Return function to swap relocations in. HTAB is the bfd's
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elf32_arm_link_hash_entry. */
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#define SWAP_RELOC_IN(HTAB) \
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((HTAB)->use_rel \
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? bfd_elf32_swap_reloc_in \
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: bfd_elf32_swap_reloca_in)
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/* Return function to swap relocations out. HTAB is the bfd's
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elf32_arm_link_hash_entry. */
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#define SWAP_RELOC_OUT(HTAB) \
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((HTAB)->use_rel \
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? bfd_elf32_swap_reloc_out \
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: bfd_elf32_swap_reloca_out)
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#define elf_info_to_howto 0
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#define elf_info_to_howto_rel elf32_arm_info_to_howto
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#define ARM_ELF_ABI_VERSION 0
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#define ARM_ELF_OS_ABI_VERSION ELFOSABI_ARM
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static bfd_boolean elf32_arm_write_section (bfd *output_bfd,
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struct bfd_link_info *link_info,
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asection *sec,
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bfd_byte *contents);
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/* Note: code such as elf32_arm_reloc_type_lookup expect to use e.g.
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R_ARM_PC24 as an index into this, and find the R_ARM_PC24 HOWTO
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in that slot. */
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static reloc_howto_type elf32_arm_howto_table_1[] =
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{
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/* No relocation. */
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HOWTO (R_ARM_NONE, /* type */
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0, /* rightshift */
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0, /* size (0 = byte, 1 = short, 2 = long) */
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0, /* bitsize */
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FALSE, /* pc_relative */
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0, /* bitpos */
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complain_overflow_dont,/* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_ARM_NONE", /* name */
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FALSE, /* partial_inplace */
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0, /* src_mask */
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0, /* dst_mask */
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FALSE), /* pcrel_offset */
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HOWTO (R_ARM_PC24, /* type */
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2, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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24, /* bitsize */
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TRUE, /* pc_relative */
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0, /* bitpos */
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complain_overflow_signed,/* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_ARM_PC24", /* name */
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FALSE, /* partial_inplace */
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0x00ffffff, /* src_mask */
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0x00ffffff, /* dst_mask */
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TRUE), /* pcrel_offset */
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/* 32 bit absolute */
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HOWTO (R_ARM_ABS32, /* type */
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0, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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32, /* bitsize */
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FALSE, /* pc_relative */
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0, /* bitpos */
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complain_overflow_bitfield,/* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_ARM_ABS32", /* name */
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FALSE, /* partial_inplace */
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0xffffffff, /* src_mask */
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0xffffffff, /* dst_mask */
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FALSE), /* pcrel_offset */
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/* standard 32bit pc-relative reloc */
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HOWTO (R_ARM_REL32, /* type */
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0, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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32, /* bitsize */
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TRUE, /* pc_relative */
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0, /* bitpos */
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complain_overflow_bitfield,/* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_ARM_REL32", /* name */
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FALSE, /* partial_inplace */
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0xffffffff, /* src_mask */
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0xffffffff, /* dst_mask */
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TRUE), /* pcrel_offset */
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/* 8 bit absolute - R_ARM_LDR_PC_G0 in AAELF */
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HOWTO (R_ARM_LDR_PC_G0, /* type */
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0, /* rightshift */
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0, /* size (0 = byte, 1 = short, 2 = long) */
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32, /* bitsize */
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TRUE, /* pc_relative */
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0, /* bitpos */
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complain_overflow_dont,/* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_ARM_LDR_PC_G0", /* name */
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FALSE, /* partial_inplace */
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0xffffffff, /* src_mask */
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0xffffffff, /* dst_mask */
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TRUE), /* pcrel_offset */
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/* 16 bit absolute */
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HOWTO (R_ARM_ABS16, /* type */
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0, /* rightshift */
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1, /* size (0 = byte, 1 = short, 2 = long) */
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16, /* bitsize */
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FALSE, /* pc_relative */
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0, /* bitpos */
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complain_overflow_bitfield,/* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_ARM_ABS16", /* name */
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FALSE, /* partial_inplace */
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0x0000ffff, /* src_mask */
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0x0000ffff, /* dst_mask */
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FALSE), /* pcrel_offset */
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/* 12 bit absolute */
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HOWTO (R_ARM_ABS12, /* type */
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0, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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12, /* bitsize */
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FALSE, /* pc_relative */
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0, /* bitpos */
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complain_overflow_bitfield,/* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_ARM_ABS12", /* name */
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FALSE, /* partial_inplace */
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0x00000fff, /* src_mask */
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0x00000fff, /* dst_mask */
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FALSE), /* pcrel_offset */
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HOWTO (R_ARM_THM_ABS5, /* type */
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6, /* rightshift */
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1, /* size (0 = byte, 1 = short, 2 = long) */
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5, /* bitsize */
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FALSE, /* pc_relative */
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0, /* bitpos */
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complain_overflow_bitfield,/* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_ARM_THM_ABS5", /* name */
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FALSE, /* partial_inplace */
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0x000007e0, /* src_mask */
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0x000007e0, /* dst_mask */
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FALSE), /* pcrel_offset */
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/* 8 bit absolute */
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HOWTO (R_ARM_ABS8, /* type */
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0, /* rightshift */
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0, /* size (0 = byte, 1 = short, 2 = long) */
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8, /* bitsize */
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FALSE, /* pc_relative */
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0, /* bitpos */
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complain_overflow_bitfield,/* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_ARM_ABS8", /* name */
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FALSE, /* partial_inplace */
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0x000000ff, /* src_mask */
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0x000000ff, /* dst_mask */
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FALSE), /* pcrel_offset */
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HOWTO (R_ARM_SBREL32, /* type */
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0, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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32, /* bitsize */
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FALSE, /* pc_relative */
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0, /* bitpos */
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complain_overflow_dont,/* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_ARM_SBREL32", /* name */
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FALSE, /* partial_inplace */
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0xffffffff, /* src_mask */
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0xffffffff, /* dst_mask */
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FALSE), /* pcrel_offset */
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HOWTO (R_ARM_THM_CALL, /* type */
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1, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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24, /* bitsize */
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TRUE, /* pc_relative */
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0, /* bitpos */
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complain_overflow_signed,/* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_ARM_THM_CALL", /* name */
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FALSE, /* partial_inplace */
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161 |
khays |
0x07ff2fff, /* src_mask */
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0x07ff2fff, /* dst_mask */
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khays |
TRUE), /* pcrel_offset */
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HOWTO (R_ARM_THM_PC8, /* type */
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1, /* rightshift */
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1, /* size (0 = byte, 1 = short, 2 = long) */
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8, /* bitsize */
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TRUE, /* pc_relative */
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0, /* bitpos */
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complain_overflow_signed,/* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_ARM_THM_PC8", /* name */
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FALSE, /* partial_inplace */
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0x000000ff, /* src_mask */
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0x000000ff, /* dst_mask */
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TRUE), /* pcrel_offset */
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HOWTO (R_ARM_BREL_ADJ, /* type */
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1, /* rightshift */
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1, /* size (0 = byte, 1 = short, 2 = long) */
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32, /* bitsize */
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FALSE, /* pc_relative */
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| 255 |
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0, /* bitpos */
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| 256 |
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complain_overflow_signed,/* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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| 258 |
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"R_ARM_BREL_ADJ", /* name */
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| 259 |
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FALSE, /* partial_inplace */
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| 260 |
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0xffffffff, /* src_mask */
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| 261 |
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0xffffffff, /* dst_mask */
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| 262 |
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FALSE), /* pcrel_offset */
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| 263 |
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| 264 |
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HOWTO (R_ARM_TLS_DESC, /* type */
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| 265 |
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0, /* rightshift */
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| 266 |
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2, /* size (0 = byte, 1 = short, 2 = long) */
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| 267 |
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32, /* bitsize */
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| 268 |
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FALSE, /* pc_relative */
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| 269 |
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0, /* bitpos */
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| 270 |
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complain_overflow_bitfield,/* complain_on_overflow */
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| 271 |
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bfd_elf_generic_reloc, /* special_function */
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| 272 |
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"R_ARM_TLS_DESC", /* name */
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| 273 |
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FALSE, /* partial_inplace */
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| 274 |
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0xffffffff, /* src_mask */
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| 275 |
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0xffffffff, /* dst_mask */
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| 276 |
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FALSE), /* pcrel_offset */
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| 277 |
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| 278 |
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HOWTO (R_ARM_THM_SWI8, /* type */
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| 279 |
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0, /* rightshift */
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| 280 |
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0, /* size (0 = byte, 1 = short, 2 = long) */
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| 281 |
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0, /* bitsize */
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| 282 |
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FALSE, /* pc_relative */
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| 283 |
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0, /* bitpos */
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| 284 |
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complain_overflow_signed,/* complain_on_overflow */
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| 285 |
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bfd_elf_generic_reloc, /* special_function */
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| 286 |
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"R_ARM_SWI8", /* name */
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| 287 |
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FALSE, /* partial_inplace */
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| 288 |
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0x00000000, /* src_mask */
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| 289 |
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0x00000000, /* dst_mask */
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| 290 |
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FALSE), /* pcrel_offset */
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| 291 |
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| 292 |
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/* BLX instruction for the ARM. */
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| 293 |
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HOWTO (R_ARM_XPC25, /* type */
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| 294 |
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2, /* rightshift */
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| 295 |
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2, /* size (0 = byte, 1 = short, 2 = long) */
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| 296 |
161 |
khays |
24, /* bitsize */
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14 |
khays |
TRUE, /* pc_relative */
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| 298 |
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0, /* bitpos */
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| 299 |
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complain_overflow_signed,/* complain_on_overflow */
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| 300 |
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bfd_elf_generic_reloc, /* special_function */
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| 301 |
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"R_ARM_XPC25", /* name */
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| 302 |
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FALSE, /* partial_inplace */
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| 303 |
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0x00ffffff, /* src_mask */
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| 304 |
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0x00ffffff, /* dst_mask */
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| 305 |
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TRUE), /* pcrel_offset */
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| 306 |
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| 307 |
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/* BLX instruction for the Thumb. */
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| 308 |
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HOWTO (R_ARM_THM_XPC22, /* type */
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| 309 |
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2, /* rightshift */
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| 310 |
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2, /* size (0 = byte, 1 = short, 2 = long) */
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| 311 |
161 |
khays |
24, /* bitsize */
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| 312 |
14 |
khays |
TRUE, /* pc_relative */
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| 313 |
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0, /* bitpos */
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| 314 |
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complain_overflow_signed,/* complain_on_overflow */
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| 315 |
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bfd_elf_generic_reloc, /* special_function */
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| 316 |
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"R_ARM_THM_XPC22", /* name */
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| 317 |
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FALSE, /* partial_inplace */
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| 318 |
161 |
khays |
0x07ff2fff, /* src_mask */
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| 319 |
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0x07ff2fff, /* dst_mask */
|
| 320 |
14 |
khays |
TRUE), /* pcrel_offset */
|
| 321 |
|
|
|
| 322 |
|
|
/* Dynamic TLS relocations. */
|
| 323 |
|
|
|
| 324 |
|
|
HOWTO (R_ARM_TLS_DTPMOD32, /* type */
|
| 325 |
|
|
0, /* rightshift */
|
| 326 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 327 |
|
|
32, /* bitsize */
|
| 328 |
|
|
FALSE, /* pc_relative */
|
| 329 |
|
|
0, /* bitpos */
|
| 330 |
|
|
complain_overflow_bitfield,/* complain_on_overflow */
|
| 331 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 332 |
|
|
"R_ARM_TLS_DTPMOD32", /* name */
|
| 333 |
|
|
TRUE, /* partial_inplace */
|
| 334 |
|
|
0xffffffff, /* src_mask */
|
| 335 |
|
|
0xffffffff, /* dst_mask */
|
| 336 |
|
|
FALSE), /* pcrel_offset */
|
| 337 |
|
|
|
| 338 |
|
|
HOWTO (R_ARM_TLS_DTPOFF32, /* type */
|
| 339 |
|
|
0, /* rightshift */
|
| 340 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 341 |
|
|
32, /* bitsize */
|
| 342 |
|
|
FALSE, /* pc_relative */
|
| 343 |
|
|
0, /* bitpos */
|
| 344 |
|
|
complain_overflow_bitfield,/* complain_on_overflow */
|
| 345 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 346 |
|
|
"R_ARM_TLS_DTPOFF32", /* name */
|
| 347 |
|
|
TRUE, /* partial_inplace */
|
| 348 |
|
|
0xffffffff, /* src_mask */
|
| 349 |
|
|
0xffffffff, /* dst_mask */
|
| 350 |
|
|
FALSE), /* pcrel_offset */
|
| 351 |
|
|
|
| 352 |
|
|
HOWTO (R_ARM_TLS_TPOFF32, /* type */
|
| 353 |
|
|
0, /* rightshift */
|
| 354 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 355 |
|
|
32, /* bitsize */
|
| 356 |
|
|
FALSE, /* pc_relative */
|
| 357 |
|
|
0, /* bitpos */
|
| 358 |
|
|
complain_overflow_bitfield,/* complain_on_overflow */
|
| 359 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 360 |
|
|
"R_ARM_TLS_TPOFF32", /* name */
|
| 361 |
|
|
TRUE, /* partial_inplace */
|
| 362 |
|
|
0xffffffff, /* src_mask */
|
| 363 |
|
|
0xffffffff, /* dst_mask */
|
| 364 |
|
|
FALSE), /* pcrel_offset */
|
| 365 |
|
|
|
| 366 |
|
|
/* Relocs used in ARM Linux */
|
| 367 |
|
|
|
| 368 |
|
|
HOWTO (R_ARM_COPY, /* type */
|
| 369 |
|
|
0, /* rightshift */
|
| 370 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 371 |
|
|
32, /* bitsize */
|
| 372 |
|
|
FALSE, /* pc_relative */
|
| 373 |
|
|
0, /* bitpos */
|
| 374 |
|
|
complain_overflow_bitfield,/* complain_on_overflow */
|
| 375 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 376 |
|
|
"R_ARM_COPY", /* name */
|
| 377 |
|
|
TRUE, /* partial_inplace */
|
| 378 |
|
|
0xffffffff, /* src_mask */
|
| 379 |
|
|
0xffffffff, /* dst_mask */
|
| 380 |
|
|
FALSE), /* pcrel_offset */
|
| 381 |
|
|
|
| 382 |
|
|
HOWTO (R_ARM_GLOB_DAT, /* type */
|
| 383 |
|
|
0, /* rightshift */
|
| 384 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 385 |
|
|
32, /* bitsize */
|
| 386 |
|
|
FALSE, /* pc_relative */
|
| 387 |
|
|
0, /* bitpos */
|
| 388 |
|
|
complain_overflow_bitfield,/* complain_on_overflow */
|
| 389 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 390 |
|
|
"R_ARM_GLOB_DAT", /* name */
|
| 391 |
|
|
TRUE, /* partial_inplace */
|
| 392 |
|
|
0xffffffff, /* src_mask */
|
| 393 |
|
|
0xffffffff, /* dst_mask */
|
| 394 |
|
|
FALSE), /* pcrel_offset */
|
| 395 |
|
|
|
| 396 |
|
|
HOWTO (R_ARM_JUMP_SLOT, /* type */
|
| 397 |
|
|
0, /* rightshift */
|
| 398 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 399 |
|
|
32, /* bitsize */
|
| 400 |
|
|
FALSE, /* pc_relative */
|
| 401 |
|
|
0, /* bitpos */
|
| 402 |
|
|
complain_overflow_bitfield,/* complain_on_overflow */
|
| 403 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 404 |
|
|
"R_ARM_JUMP_SLOT", /* name */
|
| 405 |
|
|
TRUE, /* partial_inplace */
|
| 406 |
|
|
0xffffffff, /* src_mask */
|
| 407 |
|
|
0xffffffff, /* dst_mask */
|
| 408 |
|
|
FALSE), /* pcrel_offset */
|
| 409 |
|
|
|
| 410 |
|
|
HOWTO (R_ARM_RELATIVE, /* type */
|
| 411 |
|
|
0, /* rightshift */
|
| 412 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 413 |
|
|
32, /* bitsize */
|
| 414 |
|
|
FALSE, /* pc_relative */
|
| 415 |
|
|
0, /* bitpos */
|
| 416 |
|
|
complain_overflow_bitfield,/* complain_on_overflow */
|
| 417 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 418 |
|
|
"R_ARM_RELATIVE", /* name */
|
| 419 |
|
|
TRUE, /* partial_inplace */
|
| 420 |
|
|
0xffffffff, /* src_mask */
|
| 421 |
|
|
0xffffffff, /* dst_mask */
|
| 422 |
|
|
FALSE), /* pcrel_offset */
|
| 423 |
|
|
|
| 424 |
|
|
HOWTO (R_ARM_GOTOFF32, /* type */
|
| 425 |
|
|
0, /* rightshift */
|
| 426 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 427 |
|
|
32, /* bitsize */
|
| 428 |
|
|
FALSE, /* pc_relative */
|
| 429 |
|
|
0, /* bitpos */
|
| 430 |
|
|
complain_overflow_bitfield,/* complain_on_overflow */
|
| 431 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 432 |
|
|
"R_ARM_GOTOFF32", /* name */
|
| 433 |
|
|
TRUE, /* partial_inplace */
|
| 434 |
|
|
0xffffffff, /* src_mask */
|
| 435 |
|
|
0xffffffff, /* dst_mask */
|
| 436 |
|
|
FALSE), /* pcrel_offset */
|
| 437 |
|
|
|
| 438 |
|
|
HOWTO (R_ARM_GOTPC, /* type */
|
| 439 |
|
|
0, /* rightshift */
|
| 440 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 441 |
|
|
32, /* bitsize */
|
| 442 |
|
|
TRUE, /* pc_relative */
|
| 443 |
|
|
0, /* bitpos */
|
| 444 |
|
|
complain_overflow_bitfield,/* complain_on_overflow */
|
| 445 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 446 |
|
|
"R_ARM_GOTPC", /* name */
|
| 447 |
|
|
TRUE, /* partial_inplace */
|
| 448 |
|
|
0xffffffff, /* src_mask */
|
| 449 |
|
|
0xffffffff, /* dst_mask */
|
| 450 |
|
|
TRUE), /* pcrel_offset */
|
| 451 |
|
|
|
| 452 |
|
|
HOWTO (R_ARM_GOT32, /* type */
|
| 453 |
|
|
0, /* rightshift */
|
| 454 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 455 |
|
|
32, /* bitsize */
|
| 456 |
|
|
FALSE, /* pc_relative */
|
| 457 |
|
|
0, /* bitpos */
|
| 458 |
|
|
complain_overflow_bitfield,/* complain_on_overflow */
|
| 459 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 460 |
|
|
"R_ARM_GOT32", /* name */
|
| 461 |
|
|
TRUE, /* partial_inplace */
|
| 462 |
|
|
0xffffffff, /* src_mask */
|
| 463 |
|
|
0xffffffff, /* dst_mask */
|
| 464 |
|
|
FALSE), /* pcrel_offset */
|
| 465 |
|
|
|
| 466 |
|
|
HOWTO (R_ARM_PLT32, /* type */
|
| 467 |
|
|
2, /* rightshift */
|
| 468 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 469 |
|
|
24, /* bitsize */
|
| 470 |
|
|
TRUE, /* pc_relative */
|
| 471 |
|
|
0, /* bitpos */
|
| 472 |
|
|
complain_overflow_bitfield,/* complain_on_overflow */
|
| 473 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 474 |
|
|
"R_ARM_PLT32", /* name */
|
| 475 |
|
|
FALSE, /* partial_inplace */
|
| 476 |
|
|
0x00ffffff, /* src_mask */
|
| 477 |
|
|
0x00ffffff, /* dst_mask */
|
| 478 |
|
|
TRUE), /* pcrel_offset */
|
| 479 |
|
|
|
| 480 |
|
|
HOWTO (R_ARM_CALL, /* type */
|
| 481 |
|
|
2, /* rightshift */
|
| 482 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 483 |
|
|
24, /* bitsize */
|
| 484 |
|
|
TRUE, /* pc_relative */
|
| 485 |
|
|
0, /* bitpos */
|
| 486 |
|
|
complain_overflow_signed,/* complain_on_overflow */
|
| 487 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 488 |
|
|
"R_ARM_CALL", /* name */
|
| 489 |
|
|
FALSE, /* partial_inplace */
|
| 490 |
|
|
0x00ffffff, /* src_mask */
|
| 491 |
|
|
0x00ffffff, /* dst_mask */
|
| 492 |
|
|
TRUE), /* pcrel_offset */
|
| 493 |
|
|
|
| 494 |
|
|
HOWTO (R_ARM_JUMP24, /* type */
|
| 495 |
|
|
2, /* rightshift */
|
| 496 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 497 |
|
|
24, /* bitsize */
|
| 498 |
|
|
TRUE, /* pc_relative */
|
| 499 |
|
|
0, /* bitpos */
|
| 500 |
|
|
complain_overflow_signed,/* complain_on_overflow */
|
| 501 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 502 |
|
|
"R_ARM_JUMP24", /* name */
|
| 503 |
|
|
FALSE, /* partial_inplace */
|
| 504 |
|
|
0x00ffffff, /* src_mask */
|
| 505 |
|
|
0x00ffffff, /* dst_mask */
|
| 506 |
|
|
TRUE), /* pcrel_offset */
|
| 507 |
|
|
|
| 508 |
|
|
HOWTO (R_ARM_THM_JUMP24, /* type */
|
| 509 |
|
|
1, /* rightshift */
|
| 510 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 511 |
|
|
24, /* bitsize */
|
| 512 |
|
|
TRUE, /* pc_relative */
|
| 513 |
|
|
0, /* bitpos */
|
| 514 |
|
|
complain_overflow_signed,/* complain_on_overflow */
|
| 515 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 516 |
|
|
"R_ARM_THM_JUMP24", /* name */
|
| 517 |
|
|
FALSE, /* partial_inplace */
|
| 518 |
|
|
0x07ff2fff, /* src_mask */
|
| 519 |
|
|
0x07ff2fff, /* dst_mask */
|
| 520 |
|
|
TRUE), /* pcrel_offset */
|
| 521 |
|
|
|
| 522 |
|
|
HOWTO (R_ARM_BASE_ABS, /* type */
|
| 523 |
|
|
0, /* rightshift */
|
| 524 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 525 |
|
|
32, /* bitsize */
|
| 526 |
|
|
FALSE, /* pc_relative */
|
| 527 |
|
|
0, /* bitpos */
|
| 528 |
|
|
complain_overflow_dont,/* complain_on_overflow */
|
| 529 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 530 |
|
|
"R_ARM_BASE_ABS", /* name */
|
| 531 |
|
|
FALSE, /* partial_inplace */
|
| 532 |
|
|
0xffffffff, /* src_mask */
|
| 533 |
|
|
0xffffffff, /* dst_mask */
|
| 534 |
|
|
FALSE), /* pcrel_offset */
|
| 535 |
|
|
|
| 536 |
|
|
HOWTO (R_ARM_ALU_PCREL7_0, /* type */
|
| 537 |
|
|
0, /* rightshift */
|
| 538 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 539 |
|
|
12, /* bitsize */
|
| 540 |
|
|
TRUE, /* pc_relative */
|
| 541 |
|
|
0, /* bitpos */
|
| 542 |
|
|
complain_overflow_dont,/* complain_on_overflow */
|
| 543 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 544 |
|
|
"R_ARM_ALU_PCREL_7_0", /* name */
|
| 545 |
|
|
FALSE, /* partial_inplace */
|
| 546 |
|
|
0x00000fff, /* src_mask */
|
| 547 |
|
|
0x00000fff, /* dst_mask */
|
| 548 |
|
|
TRUE), /* pcrel_offset */
|
| 549 |
|
|
|
| 550 |
|
|
HOWTO (R_ARM_ALU_PCREL15_8, /* type */
|
| 551 |
|
|
0, /* rightshift */
|
| 552 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 553 |
|
|
12, /* bitsize */
|
| 554 |
|
|
TRUE, /* pc_relative */
|
| 555 |
|
|
8, /* bitpos */
|
| 556 |
|
|
complain_overflow_dont,/* complain_on_overflow */
|
| 557 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 558 |
|
|
"R_ARM_ALU_PCREL_15_8",/* name */
|
| 559 |
|
|
FALSE, /* partial_inplace */
|
| 560 |
|
|
0x00000fff, /* src_mask */
|
| 561 |
|
|
0x00000fff, /* dst_mask */
|
| 562 |
|
|
TRUE), /* pcrel_offset */
|
| 563 |
|
|
|
| 564 |
|
|
HOWTO (R_ARM_ALU_PCREL23_15, /* type */
|
| 565 |
|
|
0, /* rightshift */
|
| 566 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 567 |
|
|
12, /* bitsize */
|
| 568 |
|
|
TRUE, /* pc_relative */
|
| 569 |
|
|
16, /* bitpos */
|
| 570 |
|
|
complain_overflow_dont,/* complain_on_overflow */
|
| 571 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 572 |
|
|
"R_ARM_ALU_PCREL_23_15",/* name */
|
| 573 |
|
|
FALSE, /* partial_inplace */
|
| 574 |
|
|
0x00000fff, /* src_mask */
|
| 575 |
|
|
0x00000fff, /* dst_mask */
|
| 576 |
|
|
TRUE), /* pcrel_offset */
|
| 577 |
|
|
|
| 578 |
|
|
HOWTO (R_ARM_LDR_SBREL_11_0, /* type */
|
| 579 |
|
|
0, /* rightshift */
|
| 580 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 581 |
|
|
12, /* bitsize */
|
| 582 |
|
|
FALSE, /* pc_relative */
|
| 583 |
|
|
0, /* bitpos */
|
| 584 |
|
|
complain_overflow_dont,/* complain_on_overflow */
|
| 585 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 586 |
|
|
"R_ARM_LDR_SBREL_11_0",/* name */
|
| 587 |
|
|
FALSE, /* partial_inplace */
|
| 588 |
|
|
0x00000fff, /* src_mask */
|
| 589 |
|
|
0x00000fff, /* dst_mask */
|
| 590 |
|
|
FALSE), /* pcrel_offset */
|
| 591 |
|
|
|
| 592 |
|
|
HOWTO (R_ARM_ALU_SBREL_19_12, /* type */
|
| 593 |
|
|
0, /* rightshift */
|
| 594 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 595 |
|
|
8, /* bitsize */
|
| 596 |
|
|
FALSE, /* pc_relative */
|
| 597 |
|
|
12, /* bitpos */
|
| 598 |
|
|
complain_overflow_dont,/* complain_on_overflow */
|
| 599 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 600 |
|
|
"R_ARM_ALU_SBREL_19_12",/* name */
|
| 601 |
|
|
FALSE, /* partial_inplace */
|
| 602 |
|
|
0x000ff000, /* src_mask */
|
| 603 |
|
|
0x000ff000, /* dst_mask */
|
| 604 |
|
|
FALSE), /* pcrel_offset */
|
| 605 |
|
|
|
| 606 |
|
|
HOWTO (R_ARM_ALU_SBREL_27_20, /* type */
|
| 607 |
|
|
0, /* rightshift */
|
| 608 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 609 |
|
|
8, /* bitsize */
|
| 610 |
|
|
FALSE, /* pc_relative */
|
| 611 |
|
|
20, /* bitpos */
|
| 612 |
|
|
complain_overflow_dont,/* complain_on_overflow */
|
| 613 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 614 |
|
|
"R_ARM_ALU_SBREL_27_20",/* name */
|
| 615 |
|
|
FALSE, /* partial_inplace */
|
| 616 |
|
|
0x0ff00000, /* src_mask */
|
| 617 |
|
|
0x0ff00000, /* dst_mask */
|
| 618 |
|
|
FALSE), /* pcrel_offset */
|
| 619 |
|
|
|
| 620 |
|
|
HOWTO (R_ARM_TARGET1, /* type */
|
| 621 |
|
|
0, /* rightshift */
|
| 622 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 623 |
|
|
32, /* bitsize */
|
| 624 |
|
|
FALSE, /* pc_relative */
|
| 625 |
|
|
0, /* bitpos */
|
| 626 |
|
|
complain_overflow_dont,/* complain_on_overflow */
|
| 627 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 628 |
|
|
"R_ARM_TARGET1", /* name */
|
| 629 |
|
|
FALSE, /* partial_inplace */
|
| 630 |
|
|
0xffffffff, /* src_mask */
|
| 631 |
|
|
0xffffffff, /* dst_mask */
|
| 632 |
|
|
FALSE), /* pcrel_offset */
|
| 633 |
|
|
|
| 634 |
|
|
HOWTO (R_ARM_ROSEGREL32, /* type */
|
| 635 |
|
|
0, /* rightshift */
|
| 636 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 637 |
|
|
32, /* bitsize */
|
| 638 |
|
|
FALSE, /* pc_relative */
|
| 639 |
|
|
0, /* bitpos */
|
| 640 |
|
|
complain_overflow_dont,/* complain_on_overflow */
|
| 641 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 642 |
|
|
"R_ARM_ROSEGREL32", /* name */
|
| 643 |
|
|
FALSE, /* partial_inplace */
|
| 644 |
|
|
0xffffffff, /* src_mask */
|
| 645 |
|
|
0xffffffff, /* dst_mask */
|
| 646 |
|
|
FALSE), /* pcrel_offset */
|
| 647 |
|
|
|
| 648 |
|
|
HOWTO (R_ARM_V4BX, /* type */
|
| 649 |
|
|
0, /* rightshift */
|
| 650 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 651 |
|
|
32, /* bitsize */
|
| 652 |
|
|
FALSE, /* pc_relative */
|
| 653 |
|
|
0, /* bitpos */
|
| 654 |
|
|
complain_overflow_dont,/* complain_on_overflow */
|
| 655 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 656 |
|
|
"R_ARM_V4BX", /* name */
|
| 657 |
|
|
FALSE, /* partial_inplace */
|
| 658 |
|
|
0xffffffff, /* src_mask */
|
| 659 |
|
|
0xffffffff, /* dst_mask */
|
| 660 |
|
|
FALSE), /* pcrel_offset */
|
| 661 |
|
|
|
| 662 |
|
|
HOWTO (R_ARM_TARGET2, /* type */
|
| 663 |
|
|
0, /* rightshift */
|
| 664 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 665 |
|
|
32, /* bitsize */
|
| 666 |
|
|
FALSE, /* pc_relative */
|
| 667 |
|
|
0, /* bitpos */
|
| 668 |
|
|
complain_overflow_signed,/* complain_on_overflow */
|
| 669 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 670 |
|
|
"R_ARM_TARGET2", /* name */
|
| 671 |
|
|
FALSE, /* partial_inplace */
|
| 672 |
|
|
0xffffffff, /* src_mask */
|
| 673 |
|
|
0xffffffff, /* dst_mask */
|
| 674 |
|
|
TRUE), /* pcrel_offset */
|
| 675 |
|
|
|
| 676 |
|
|
HOWTO (R_ARM_PREL31, /* type */
|
| 677 |
|
|
0, /* rightshift */
|
| 678 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 679 |
|
|
31, /* bitsize */
|
| 680 |
|
|
TRUE, /* pc_relative */
|
| 681 |
|
|
0, /* bitpos */
|
| 682 |
|
|
complain_overflow_signed,/* complain_on_overflow */
|
| 683 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 684 |
|
|
"R_ARM_PREL31", /* name */
|
| 685 |
|
|
FALSE, /* partial_inplace */
|
| 686 |
|
|
0x7fffffff, /* src_mask */
|
| 687 |
|
|
0x7fffffff, /* dst_mask */
|
| 688 |
|
|
TRUE), /* pcrel_offset */
|
| 689 |
|
|
|
| 690 |
|
|
HOWTO (R_ARM_MOVW_ABS_NC, /* type */
|
| 691 |
|
|
0, /* rightshift */
|
| 692 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 693 |
|
|
16, /* bitsize */
|
| 694 |
|
|
FALSE, /* pc_relative */
|
| 695 |
|
|
0, /* bitpos */
|
| 696 |
|
|
complain_overflow_dont,/* complain_on_overflow */
|
| 697 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 698 |
|
|
"R_ARM_MOVW_ABS_NC", /* name */
|
| 699 |
|
|
FALSE, /* partial_inplace */
|
| 700 |
|
|
0x000f0fff, /* src_mask */
|
| 701 |
|
|
0x000f0fff, /* dst_mask */
|
| 702 |
|
|
FALSE), /* pcrel_offset */
|
| 703 |
|
|
|
| 704 |
|
|
HOWTO (R_ARM_MOVT_ABS, /* type */
|
| 705 |
|
|
0, /* rightshift */
|
| 706 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 707 |
|
|
16, /* bitsize */
|
| 708 |
|
|
FALSE, /* pc_relative */
|
| 709 |
|
|
0, /* bitpos */
|
| 710 |
|
|
complain_overflow_bitfield,/* complain_on_overflow */
|
| 711 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 712 |
|
|
"R_ARM_MOVT_ABS", /* name */
|
| 713 |
|
|
FALSE, /* partial_inplace */
|
| 714 |
|
|
0x000f0fff, /* src_mask */
|
| 715 |
|
|
0x000f0fff, /* dst_mask */
|
| 716 |
|
|
FALSE), /* pcrel_offset */
|
| 717 |
|
|
|
| 718 |
|
|
HOWTO (R_ARM_MOVW_PREL_NC, /* type */
|
| 719 |
|
|
0, /* rightshift */
|
| 720 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 721 |
|
|
16, /* bitsize */
|
| 722 |
|
|
TRUE, /* pc_relative */
|
| 723 |
|
|
0, /* bitpos */
|
| 724 |
|
|
complain_overflow_dont,/* complain_on_overflow */
|
| 725 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 726 |
|
|
"R_ARM_MOVW_PREL_NC", /* name */
|
| 727 |
|
|
FALSE, /* partial_inplace */
|
| 728 |
|
|
0x000f0fff, /* src_mask */
|
| 729 |
|
|
0x000f0fff, /* dst_mask */
|
| 730 |
|
|
TRUE), /* pcrel_offset */
|
| 731 |
|
|
|
| 732 |
|
|
HOWTO (R_ARM_MOVT_PREL, /* type */
|
| 733 |
|
|
0, /* rightshift */
|
| 734 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 735 |
|
|
16, /* bitsize */
|
| 736 |
|
|
TRUE, /* pc_relative */
|
| 737 |
|
|
0, /* bitpos */
|
| 738 |
|
|
complain_overflow_bitfield,/* complain_on_overflow */
|
| 739 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 740 |
|
|
"R_ARM_MOVT_PREL", /* name */
|
| 741 |
|
|
FALSE, /* partial_inplace */
|
| 742 |
|
|
0x000f0fff, /* src_mask */
|
| 743 |
|
|
0x000f0fff, /* dst_mask */
|
| 744 |
|
|
TRUE), /* pcrel_offset */
|
| 745 |
|
|
|
| 746 |
|
|
HOWTO (R_ARM_THM_MOVW_ABS_NC, /* type */
|
| 747 |
|
|
0, /* rightshift */
|
| 748 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 749 |
|
|
16, /* bitsize */
|
| 750 |
|
|
FALSE, /* pc_relative */
|
| 751 |
|
|
0, /* bitpos */
|
| 752 |
|
|
complain_overflow_dont,/* complain_on_overflow */
|
| 753 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 754 |
|
|
"R_ARM_THM_MOVW_ABS_NC",/* name */
|
| 755 |
|
|
FALSE, /* partial_inplace */
|
| 756 |
|
|
0x040f70ff, /* src_mask */
|
| 757 |
|
|
0x040f70ff, /* dst_mask */
|
| 758 |
|
|
FALSE), /* pcrel_offset */
|
| 759 |
|
|
|
| 760 |
|
|
HOWTO (R_ARM_THM_MOVT_ABS, /* type */
|
| 761 |
|
|
0, /* rightshift */
|
| 762 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 763 |
|
|
16, /* bitsize */
|
| 764 |
|
|
FALSE, /* pc_relative */
|
| 765 |
|
|
0, /* bitpos */
|
| 766 |
|
|
complain_overflow_bitfield,/* complain_on_overflow */
|
| 767 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 768 |
|
|
"R_ARM_THM_MOVT_ABS", /* name */
|
| 769 |
|
|
FALSE, /* partial_inplace */
|
| 770 |
|
|
0x040f70ff, /* src_mask */
|
| 771 |
|
|
0x040f70ff, /* dst_mask */
|
| 772 |
|
|
FALSE), /* pcrel_offset */
|
| 773 |
|
|
|
| 774 |
|
|
HOWTO (R_ARM_THM_MOVW_PREL_NC,/* type */
|
| 775 |
|
|
0, /* rightshift */
|
| 776 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 777 |
|
|
16, /* bitsize */
|
| 778 |
|
|
TRUE, /* pc_relative */
|
| 779 |
|
|
0, /* bitpos */
|
| 780 |
|
|
complain_overflow_dont,/* complain_on_overflow */
|
| 781 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 782 |
|
|
"R_ARM_THM_MOVW_PREL_NC",/* name */
|
| 783 |
|
|
FALSE, /* partial_inplace */
|
| 784 |
|
|
0x040f70ff, /* src_mask */
|
| 785 |
|
|
0x040f70ff, /* dst_mask */
|
| 786 |
|
|
TRUE), /* pcrel_offset */
|
| 787 |
|
|
|
| 788 |
|
|
HOWTO (R_ARM_THM_MOVT_PREL, /* type */
|
| 789 |
|
|
0, /* rightshift */
|
| 790 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 791 |
|
|
16, /* bitsize */
|
| 792 |
|
|
TRUE, /* pc_relative */
|
| 793 |
|
|
0, /* bitpos */
|
| 794 |
|
|
complain_overflow_bitfield,/* complain_on_overflow */
|
| 795 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 796 |
|
|
"R_ARM_THM_MOVT_PREL", /* name */
|
| 797 |
|
|
FALSE, /* partial_inplace */
|
| 798 |
|
|
0x040f70ff, /* src_mask */
|
| 799 |
|
|
0x040f70ff, /* dst_mask */
|
| 800 |
|
|
TRUE), /* pcrel_offset */
|
| 801 |
|
|
|
| 802 |
|
|
HOWTO (R_ARM_THM_JUMP19, /* type */
|
| 803 |
|
|
1, /* rightshift */
|
| 804 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 805 |
|
|
19, /* bitsize */
|
| 806 |
|
|
TRUE, /* pc_relative */
|
| 807 |
|
|
0, /* bitpos */
|
| 808 |
|
|
complain_overflow_signed,/* complain_on_overflow */
|
| 809 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 810 |
|
|
"R_ARM_THM_JUMP19", /* name */
|
| 811 |
|
|
FALSE, /* partial_inplace */
|
| 812 |
|
|
0x043f2fff, /* src_mask */
|
| 813 |
|
|
0x043f2fff, /* dst_mask */
|
| 814 |
|
|
TRUE), /* pcrel_offset */
|
| 815 |
|
|
|
| 816 |
|
|
HOWTO (R_ARM_THM_JUMP6, /* type */
|
| 817 |
|
|
1, /* rightshift */
|
| 818 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 819 |
|
|
6, /* bitsize */
|
| 820 |
|
|
TRUE, /* pc_relative */
|
| 821 |
|
|
0, /* bitpos */
|
| 822 |
|
|
complain_overflow_unsigned,/* complain_on_overflow */
|
| 823 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 824 |
|
|
"R_ARM_THM_JUMP6", /* name */
|
| 825 |
|
|
FALSE, /* partial_inplace */
|
| 826 |
|
|
0x02f8, /* src_mask */
|
| 827 |
|
|
0x02f8, /* dst_mask */
|
| 828 |
|
|
TRUE), /* pcrel_offset */
|
| 829 |
|
|
|
| 830 |
|
|
/* These are declared as 13-bit signed relocations because we can
|
| 831 |
|
|
address -4095 .. 4095(base) by altering ADDW to SUBW or vice
|
| 832 |
|
|
versa. */
|
| 833 |
|
|
HOWTO (R_ARM_THM_ALU_PREL_11_0,/* type */
|
| 834 |
|
|
0, /* rightshift */
|
| 835 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 836 |
|
|
13, /* bitsize */
|
| 837 |
|
|
TRUE, /* pc_relative */
|
| 838 |
|
|
0, /* bitpos */
|
| 839 |
|
|
complain_overflow_dont,/* complain_on_overflow */
|
| 840 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 841 |
|
|
"R_ARM_THM_ALU_PREL_11_0",/* name */
|
| 842 |
|
|
FALSE, /* partial_inplace */
|
| 843 |
|
|
0xffffffff, /* src_mask */
|
| 844 |
|
|
0xffffffff, /* dst_mask */
|
| 845 |
|
|
TRUE), /* pcrel_offset */
|
| 846 |
|
|
|
| 847 |
|
|
HOWTO (R_ARM_THM_PC12, /* type */
|
| 848 |
|
|
0, /* rightshift */
|
| 849 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 850 |
|
|
13, /* bitsize */
|
| 851 |
|
|
TRUE, /* pc_relative */
|
| 852 |
|
|
0, /* bitpos */
|
| 853 |
|
|
complain_overflow_dont,/* complain_on_overflow */
|
| 854 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 855 |
|
|
"R_ARM_THM_PC12", /* name */
|
| 856 |
|
|
FALSE, /* partial_inplace */
|
| 857 |
|
|
0xffffffff, /* src_mask */
|
| 858 |
|
|
0xffffffff, /* dst_mask */
|
| 859 |
|
|
TRUE), /* pcrel_offset */
|
| 860 |
|
|
|
| 861 |
|
|
HOWTO (R_ARM_ABS32_NOI, /* type */
|
| 862 |
|
|
0, /* rightshift */
|
| 863 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 864 |
|
|
32, /* bitsize */
|
| 865 |
|
|
FALSE, /* pc_relative */
|
| 866 |
|
|
0, /* bitpos */
|
| 867 |
|
|
complain_overflow_dont,/* complain_on_overflow */
|
| 868 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 869 |
|
|
"R_ARM_ABS32_NOI", /* name */
|
| 870 |
|
|
FALSE, /* partial_inplace */
|
| 871 |
|
|
0xffffffff, /* src_mask */
|
| 872 |
|
|
0xffffffff, /* dst_mask */
|
| 873 |
|
|
FALSE), /* pcrel_offset */
|
| 874 |
|
|
|
| 875 |
|
|
HOWTO (R_ARM_REL32_NOI, /* type */
|
| 876 |
|
|
0, /* rightshift */
|
| 877 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 878 |
|
|
32, /* bitsize */
|
| 879 |
|
|
TRUE, /* pc_relative */
|
| 880 |
|
|
0, /* bitpos */
|
| 881 |
|
|
complain_overflow_dont,/* complain_on_overflow */
|
| 882 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 883 |
|
|
"R_ARM_REL32_NOI", /* name */
|
| 884 |
|
|
FALSE, /* partial_inplace */
|
| 885 |
|
|
0xffffffff, /* src_mask */
|
| 886 |
|
|
0xffffffff, /* dst_mask */
|
| 887 |
|
|
FALSE), /* pcrel_offset */
|
| 888 |
|
|
|
| 889 |
|
|
/* Group relocations. */
|
| 890 |
|
|
|
| 891 |
|
|
HOWTO (R_ARM_ALU_PC_G0_NC, /* type */
|
| 892 |
|
|
0, /* rightshift */
|
| 893 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 894 |
|
|
32, /* bitsize */
|
| 895 |
|
|
TRUE, /* pc_relative */
|
| 896 |
|
|
0, /* bitpos */
|
| 897 |
|
|
complain_overflow_dont,/* complain_on_overflow */
|
| 898 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 899 |
|
|
"R_ARM_ALU_PC_G0_NC", /* name */
|
| 900 |
|
|
FALSE, /* partial_inplace */
|
| 901 |
|
|
0xffffffff, /* src_mask */
|
| 902 |
|
|
0xffffffff, /* dst_mask */
|
| 903 |
|
|
TRUE), /* pcrel_offset */
|
| 904 |
|
|
|
| 905 |
|
|
HOWTO (R_ARM_ALU_PC_G0, /* type */
|
| 906 |
|
|
0, /* rightshift */
|
| 907 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 908 |
|
|
32, /* bitsize */
|
| 909 |
|
|
TRUE, /* pc_relative */
|
| 910 |
|
|
0, /* bitpos */
|
| 911 |
|
|
complain_overflow_dont,/* complain_on_overflow */
|
| 912 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 913 |
|
|
"R_ARM_ALU_PC_G0", /* name */
|
| 914 |
|
|
FALSE, /* partial_inplace */
|
| 915 |
|
|
0xffffffff, /* src_mask */
|
| 916 |
|
|
0xffffffff, /* dst_mask */
|
| 917 |
|
|
TRUE), /* pcrel_offset */
|
| 918 |
|
|
|
| 919 |
|
|
HOWTO (R_ARM_ALU_PC_G1_NC, /* type */
|
| 920 |
|
|
0, /* rightshift */
|
| 921 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 922 |
|
|
32, /* bitsize */
|
| 923 |
|
|
TRUE, /* pc_relative */
|
| 924 |
|
|
0, /* bitpos */
|
| 925 |
|
|
complain_overflow_dont,/* complain_on_overflow */
|
| 926 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 927 |
|
|
"R_ARM_ALU_PC_G1_NC", /* name */
|
| 928 |
|
|
FALSE, /* partial_inplace */
|
| 929 |
|
|
0xffffffff, /* src_mask */
|
| 930 |
|
|
0xffffffff, /* dst_mask */
|
| 931 |
|
|
TRUE), /* pcrel_offset */
|
| 932 |
|
|
|
| 933 |
|
|
HOWTO (R_ARM_ALU_PC_G1, /* type */
|
| 934 |
|
|
0, /* rightshift */
|
| 935 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 936 |
|
|
32, /* bitsize */
|
| 937 |
|
|
TRUE, /* pc_relative */
|
| 938 |
|
|
0, /* bitpos */
|
| 939 |
|
|
complain_overflow_dont,/* complain_on_overflow */
|
| 940 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 941 |
|
|
"R_ARM_ALU_PC_G1", /* name */
|
| 942 |
|
|
FALSE, /* partial_inplace */
|
| 943 |
|
|
0xffffffff, /* src_mask */
|
| 944 |
|
|
0xffffffff, /* dst_mask */
|
| 945 |
|
|
TRUE), /* pcrel_offset */
|
| 946 |
|
|
|
| 947 |
|
|
HOWTO (R_ARM_ALU_PC_G2, /* type */
|
| 948 |
|
|
0, /* rightshift */
|
| 949 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 950 |
|
|
32, /* bitsize */
|
| 951 |
|
|
TRUE, /* pc_relative */
|
| 952 |
|
|
0, /* bitpos */
|
| 953 |
|
|
complain_overflow_dont,/* complain_on_overflow */
|
| 954 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 955 |
|
|
"R_ARM_ALU_PC_G2", /* name */
|
| 956 |
|
|
FALSE, /* partial_inplace */
|
| 957 |
|
|
0xffffffff, /* src_mask */
|
| 958 |
|
|
0xffffffff, /* dst_mask */
|
| 959 |
|
|
TRUE), /* pcrel_offset */
|
| 960 |
|
|
|
| 961 |
|
|
HOWTO (R_ARM_LDR_PC_G1, /* type */
|
| 962 |
|
|
0, /* rightshift */
|
| 963 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 964 |
|
|
32, /* bitsize */
|
| 965 |
|
|
TRUE, /* pc_relative */
|
| 966 |
|
|
0, /* bitpos */
|
| 967 |
|
|
complain_overflow_dont,/* complain_on_overflow */
|
| 968 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 969 |
|
|
"R_ARM_LDR_PC_G1", /* name */
|
| 970 |
|
|
FALSE, /* partial_inplace */
|
| 971 |
|
|
0xffffffff, /* src_mask */
|
| 972 |
|
|
0xffffffff, /* dst_mask */
|
| 973 |
|
|
TRUE), /* pcrel_offset */
|
| 974 |
|
|
|
| 975 |
|
|
HOWTO (R_ARM_LDR_PC_G2, /* type */
|
| 976 |
|
|
0, /* rightshift */
|
| 977 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 978 |
|
|
32, /* bitsize */
|
| 979 |
|
|
TRUE, /* pc_relative */
|
| 980 |
|
|
0, /* bitpos */
|
| 981 |
|
|
complain_overflow_dont,/* complain_on_overflow */
|
| 982 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 983 |
|
|
"R_ARM_LDR_PC_G2", /* name */
|
| 984 |
|
|
FALSE, /* partial_inplace */
|
| 985 |
|
|
0xffffffff, /* src_mask */
|
| 986 |
|
|
0xffffffff, /* dst_mask */
|
| 987 |
|
|
TRUE), /* pcrel_offset */
|
| 988 |
|
|
|
| 989 |
|
|
HOWTO (R_ARM_LDRS_PC_G0, /* type */
|
| 990 |
|
|
0, /* rightshift */
|
| 991 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 992 |
|
|
32, /* bitsize */
|
| 993 |
|
|
TRUE, /* pc_relative */
|
| 994 |
|
|
0, /* bitpos */
|
| 995 |
|
|
complain_overflow_dont,/* complain_on_overflow */
|
| 996 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 997 |
|
|
"R_ARM_LDRS_PC_G0", /* name */
|
| 998 |
|
|
FALSE, /* partial_inplace */
|
| 999 |
|
|
0xffffffff, /* src_mask */
|
| 1000 |
|
|
0xffffffff, /* dst_mask */
|
| 1001 |
|
|
TRUE), /* pcrel_offset */
|
| 1002 |
|
|
|
| 1003 |
|
|
HOWTO (R_ARM_LDRS_PC_G1, /* type */
|
| 1004 |
|
|
0, /* rightshift */
|
| 1005 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1006 |
|
|
32, /* bitsize */
|
| 1007 |
|
|
TRUE, /* pc_relative */
|
| 1008 |
|
|
0, /* bitpos */
|
| 1009 |
|
|
complain_overflow_dont,/* complain_on_overflow */
|
| 1010 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 1011 |
|
|
"R_ARM_LDRS_PC_G1", /* name */
|
| 1012 |
|
|
FALSE, /* partial_inplace */
|
| 1013 |
|
|
0xffffffff, /* src_mask */
|
| 1014 |
|
|
0xffffffff, /* dst_mask */
|
| 1015 |
|
|
TRUE), /* pcrel_offset */
|
| 1016 |
|
|
|
| 1017 |
|
|
HOWTO (R_ARM_LDRS_PC_G2, /* type */
|
| 1018 |
|
|
0, /* rightshift */
|
| 1019 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1020 |
|
|
32, /* bitsize */
|
| 1021 |
|
|
TRUE, /* pc_relative */
|
| 1022 |
|
|
0, /* bitpos */
|
| 1023 |
|
|
complain_overflow_dont,/* complain_on_overflow */
|
| 1024 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 1025 |
|
|
"R_ARM_LDRS_PC_G2", /* name */
|
| 1026 |
|
|
FALSE, /* partial_inplace */
|
| 1027 |
|
|
0xffffffff, /* src_mask */
|
| 1028 |
|
|
0xffffffff, /* dst_mask */
|
| 1029 |
|
|
TRUE), /* pcrel_offset */
|
| 1030 |
|
|
|
| 1031 |
|
|
HOWTO (R_ARM_LDC_PC_G0, /* type */
|
| 1032 |
|
|
0, /* rightshift */
|
| 1033 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1034 |
|
|
32, /* bitsize */
|
| 1035 |
|
|
TRUE, /* pc_relative */
|
| 1036 |
|
|
0, /* bitpos */
|
| 1037 |
|
|
complain_overflow_dont,/* complain_on_overflow */
|
| 1038 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 1039 |
|
|
"R_ARM_LDC_PC_G0", /* name */
|
| 1040 |
|
|
FALSE, /* partial_inplace */
|
| 1041 |
|
|
0xffffffff, /* src_mask */
|
| 1042 |
|
|
0xffffffff, /* dst_mask */
|
| 1043 |
|
|
TRUE), /* pcrel_offset */
|
| 1044 |
|
|
|
| 1045 |
|
|
HOWTO (R_ARM_LDC_PC_G1, /* type */
|
| 1046 |
|
|
0, /* rightshift */
|
| 1047 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1048 |
|
|
32, /* bitsize */
|
| 1049 |
|
|
TRUE, /* pc_relative */
|
| 1050 |
|
|
0, /* bitpos */
|
| 1051 |
|
|
complain_overflow_dont,/* complain_on_overflow */
|
| 1052 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 1053 |
|
|
"R_ARM_LDC_PC_G1", /* name */
|
| 1054 |
|
|
FALSE, /* partial_inplace */
|
| 1055 |
|
|
0xffffffff, /* src_mask */
|
| 1056 |
|
|
0xffffffff, /* dst_mask */
|
| 1057 |
|
|
TRUE), /* pcrel_offset */
|
| 1058 |
|
|
|
| 1059 |
|
|
HOWTO (R_ARM_LDC_PC_G2, /* type */
|
| 1060 |
|
|
0, /* rightshift */
|
| 1061 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1062 |
|
|
32, /* bitsize */
|
| 1063 |
|
|
TRUE, /* pc_relative */
|
| 1064 |
|
|
0, /* bitpos */
|
| 1065 |
|
|
complain_overflow_dont,/* complain_on_overflow */
|
| 1066 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 1067 |
|
|
"R_ARM_LDC_PC_G2", /* name */
|
| 1068 |
|
|
FALSE, /* partial_inplace */
|
| 1069 |
|
|
0xffffffff, /* src_mask */
|
| 1070 |
|
|
0xffffffff, /* dst_mask */
|
| 1071 |
|
|
TRUE), /* pcrel_offset */
|
| 1072 |
|
|
|
| 1073 |
|
|
HOWTO (R_ARM_ALU_SB_G0_NC, /* type */
|
| 1074 |
|
|
0, /* rightshift */
|
| 1075 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1076 |
|
|
32, /* bitsize */
|
| 1077 |
|
|
TRUE, /* pc_relative */
|
| 1078 |
|
|
0, /* bitpos */
|
| 1079 |
|
|
complain_overflow_dont,/* complain_on_overflow */
|
| 1080 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 1081 |
|
|
"R_ARM_ALU_SB_G0_NC", /* name */
|
| 1082 |
|
|
FALSE, /* partial_inplace */
|
| 1083 |
|
|
0xffffffff, /* src_mask */
|
| 1084 |
|
|
0xffffffff, /* dst_mask */
|
| 1085 |
|
|
TRUE), /* pcrel_offset */
|
| 1086 |
|
|
|
| 1087 |
|
|
HOWTO (R_ARM_ALU_SB_G0, /* type */
|
| 1088 |
|
|
0, /* rightshift */
|
| 1089 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1090 |
|
|
32, /* bitsize */
|
| 1091 |
|
|
TRUE, /* pc_relative */
|
| 1092 |
|
|
0, /* bitpos */
|
| 1093 |
|
|
complain_overflow_dont,/* complain_on_overflow */
|
| 1094 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 1095 |
|
|
"R_ARM_ALU_SB_G0", /* name */
|
| 1096 |
|
|
FALSE, /* partial_inplace */
|
| 1097 |
|
|
0xffffffff, /* src_mask */
|
| 1098 |
|
|
0xffffffff, /* dst_mask */
|
| 1099 |
|
|
TRUE), /* pcrel_offset */
|
| 1100 |
|
|
|
| 1101 |
|
|
HOWTO (R_ARM_ALU_SB_G1_NC, /* type */
|
| 1102 |
|
|
0, /* rightshift */
|
| 1103 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1104 |
|
|
32, /* bitsize */
|
| 1105 |
|
|
TRUE, /* pc_relative */
|
| 1106 |
|
|
0, /* bitpos */
|
| 1107 |
|
|
complain_overflow_dont,/* complain_on_overflow */
|
| 1108 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 1109 |
|
|
"R_ARM_ALU_SB_G1_NC", /* name */
|
| 1110 |
|
|
FALSE, /* partial_inplace */
|
| 1111 |
|
|
0xffffffff, /* src_mask */
|
| 1112 |
|
|
0xffffffff, /* dst_mask */
|
| 1113 |
|
|
TRUE), /* pcrel_offset */
|
| 1114 |
|
|
|
| 1115 |
|
|
HOWTO (R_ARM_ALU_SB_G1, /* type */
|
| 1116 |
|
|
0, /* rightshift */
|
| 1117 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1118 |
|
|
32, /* bitsize */
|
| 1119 |
|
|
TRUE, /* pc_relative */
|
| 1120 |
|
|
0, /* bitpos */
|
| 1121 |
|
|
complain_overflow_dont,/* complain_on_overflow */
|
| 1122 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 1123 |
|
|
"R_ARM_ALU_SB_G1", /* name */
|
| 1124 |
|
|
FALSE, /* partial_inplace */
|
| 1125 |
|
|
0xffffffff, /* src_mask */
|
| 1126 |
|
|
0xffffffff, /* dst_mask */
|
| 1127 |
|
|
TRUE), /* pcrel_offset */
|
| 1128 |
|
|
|
| 1129 |
|
|
HOWTO (R_ARM_ALU_SB_G2, /* type */
|
| 1130 |
|
|
0, /* rightshift */
|
| 1131 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1132 |
|
|
32, /* bitsize */
|
| 1133 |
|
|
TRUE, /* pc_relative */
|
| 1134 |
|
|
0, /* bitpos */
|
| 1135 |
|
|
complain_overflow_dont,/* complain_on_overflow */
|
| 1136 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 1137 |
|
|
"R_ARM_ALU_SB_G2", /* name */
|
| 1138 |
|
|
FALSE, /* partial_inplace */
|
| 1139 |
|
|
0xffffffff, /* src_mask */
|
| 1140 |
|
|
0xffffffff, /* dst_mask */
|
| 1141 |
|
|
TRUE), /* pcrel_offset */
|
| 1142 |
|
|
|
| 1143 |
|
|
HOWTO (R_ARM_LDR_SB_G0, /* type */
|
| 1144 |
|
|
0, /* rightshift */
|
| 1145 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1146 |
|
|
32, /* bitsize */
|
| 1147 |
|
|
TRUE, /* pc_relative */
|
| 1148 |
|
|
0, /* bitpos */
|
| 1149 |
|
|
complain_overflow_dont,/* complain_on_overflow */
|
| 1150 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 1151 |
|
|
"R_ARM_LDR_SB_G0", /* name */
|
| 1152 |
|
|
FALSE, /* partial_inplace */
|
| 1153 |
|
|
0xffffffff, /* src_mask */
|
| 1154 |
|
|
0xffffffff, /* dst_mask */
|
| 1155 |
|
|
TRUE), /* pcrel_offset */
|
| 1156 |
|
|
|
| 1157 |
|
|
HOWTO (R_ARM_LDR_SB_G1, /* type */
|
| 1158 |
|
|
0, /* rightshift */
|
| 1159 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1160 |
|
|
32, /* bitsize */
|
| 1161 |
|
|
TRUE, /* pc_relative */
|
| 1162 |
|
|
0, /* bitpos */
|
| 1163 |
|
|
complain_overflow_dont,/* complain_on_overflow */
|
| 1164 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 1165 |
|
|
"R_ARM_LDR_SB_G1", /* name */
|
| 1166 |
|
|
FALSE, /* partial_inplace */
|
| 1167 |
|
|
0xffffffff, /* src_mask */
|
| 1168 |
|
|
0xffffffff, /* dst_mask */
|
| 1169 |
|
|
TRUE), /* pcrel_offset */
|
| 1170 |
|
|
|
| 1171 |
|
|
HOWTO (R_ARM_LDR_SB_G2, /* type */
|
| 1172 |
|
|
0, /* rightshift */
|
| 1173 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1174 |
|
|
32, /* bitsize */
|
| 1175 |
|
|
TRUE, /* pc_relative */
|
| 1176 |
|
|
0, /* bitpos */
|
| 1177 |
|
|
complain_overflow_dont,/* complain_on_overflow */
|
| 1178 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 1179 |
|
|
"R_ARM_LDR_SB_G2", /* name */
|
| 1180 |
|
|
FALSE, /* partial_inplace */
|
| 1181 |
|
|
0xffffffff, /* src_mask */
|
| 1182 |
|
|
0xffffffff, /* dst_mask */
|
| 1183 |
|
|
TRUE), /* pcrel_offset */
|
| 1184 |
|
|
|
| 1185 |
|
|
HOWTO (R_ARM_LDRS_SB_G0, /* type */
|
| 1186 |
|
|
0, /* rightshift */
|
| 1187 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1188 |
|
|
32, /* bitsize */
|
| 1189 |
|
|
TRUE, /* pc_relative */
|
| 1190 |
|
|
0, /* bitpos */
|
| 1191 |
|
|
complain_overflow_dont,/* complain_on_overflow */
|
| 1192 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 1193 |
|
|
"R_ARM_LDRS_SB_G0", /* name */
|
| 1194 |
|
|
FALSE, /* partial_inplace */
|
| 1195 |
|
|
0xffffffff, /* src_mask */
|
| 1196 |
|
|
0xffffffff, /* dst_mask */
|
| 1197 |
|
|
TRUE), /* pcrel_offset */
|
| 1198 |
|
|
|
| 1199 |
|
|
HOWTO (R_ARM_LDRS_SB_G1, /* type */
|
| 1200 |
|
|
0, /* rightshift */
|
| 1201 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1202 |
|
|
32, /* bitsize */
|
| 1203 |
|
|
TRUE, /* pc_relative */
|
| 1204 |
|
|
0, /* bitpos */
|
| 1205 |
|
|
complain_overflow_dont,/* complain_on_overflow */
|
| 1206 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 1207 |
|
|
"R_ARM_LDRS_SB_G1", /* name */
|
| 1208 |
|
|
FALSE, /* partial_inplace */
|
| 1209 |
|
|
0xffffffff, /* src_mask */
|
| 1210 |
|
|
0xffffffff, /* dst_mask */
|
| 1211 |
|
|
TRUE), /* pcrel_offset */
|
| 1212 |
|
|
|
| 1213 |
|
|
HOWTO (R_ARM_LDRS_SB_G2, /* type */
|
| 1214 |
|
|
0, /* rightshift */
|
| 1215 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1216 |
|
|
32, /* bitsize */
|
| 1217 |
|
|
TRUE, /* pc_relative */
|
| 1218 |
|
|
0, /* bitpos */
|
| 1219 |
|
|
complain_overflow_dont,/* complain_on_overflow */
|
| 1220 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 1221 |
|
|
"R_ARM_LDRS_SB_G2", /* name */
|
| 1222 |
|
|
FALSE, /* partial_inplace */
|
| 1223 |
|
|
0xffffffff, /* src_mask */
|
| 1224 |
|
|
0xffffffff, /* dst_mask */
|
| 1225 |
|
|
TRUE), /* pcrel_offset */
|
| 1226 |
|
|
|
| 1227 |
|
|
HOWTO (R_ARM_LDC_SB_G0, /* type */
|
| 1228 |
|
|
0, /* rightshift */
|
| 1229 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1230 |
|
|
32, /* bitsize */
|
| 1231 |
|
|
TRUE, /* pc_relative */
|
| 1232 |
|
|
0, /* bitpos */
|
| 1233 |
|
|
complain_overflow_dont,/* complain_on_overflow */
|
| 1234 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 1235 |
|
|
"R_ARM_LDC_SB_G0", /* name */
|
| 1236 |
|
|
FALSE, /* partial_inplace */
|
| 1237 |
|
|
0xffffffff, /* src_mask */
|
| 1238 |
|
|
0xffffffff, /* dst_mask */
|
| 1239 |
|
|
TRUE), /* pcrel_offset */
|
| 1240 |
|
|
|
| 1241 |
|
|
HOWTO (R_ARM_LDC_SB_G1, /* type */
|
| 1242 |
|
|
0, /* rightshift */
|
| 1243 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1244 |
|
|
32, /* bitsize */
|
| 1245 |
|
|
TRUE, /* pc_relative */
|
| 1246 |
|
|
0, /* bitpos */
|
| 1247 |
|
|
complain_overflow_dont,/* complain_on_overflow */
|
| 1248 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 1249 |
|
|
"R_ARM_LDC_SB_G1", /* name */
|
| 1250 |
|
|
FALSE, /* partial_inplace */
|
| 1251 |
|
|
0xffffffff, /* src_mask */
|
| 1252 |
|
|
0xffffffff, /* dst_mask */
|
| 1253 |
|
|
TRUE), /* pcrel_offset */
|
| 1254 |
|
|
|
| 1255 |
|
|
HOWTO (R_ARM_LDC_SB_G2, /* type */
|
| 1256 |
|
|
0, /* rightshift */
|
| 1257 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1258 |
|
|
32, /* bitsize */
|
| 1259 |
|
|
TRUE, /* pc_relative */
|
| 1260 |
|
|
0, /* bitpos */
|
| 1261 |
|
|
complain_overflow_dont,/* complain_on_overflow */
|
| 1262 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 1263 |
|
|
"R_ARM_LDC_SB_G2", /* name */
|
| 1264 |
|
|
FALSE, /* partial_inplace */
|
| 1265 |
|
|
0xffffffff, /* src_mask */
|
| 1266 |
|
|
0xffffffff, /* dst_mask */
|
| 1267 |
|
|
TRUE), /* pcrel_offset */
|
| 1268 |
|
|
|
| 1269 |
|
|
/* End of group relocations. */
|
| 1270 |
|
|
|
| 1271 |
|
|
HOWTO (R_ARM_MOVW_BREL_NC, /* type */
|
| 1272 |
|
|
0, /* rightshift */
|
| 1273 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1274 |
|
|
16, /* bitsize */
|
| 1275 |
|
|
FALSE, /* pc_relative */
|
| 1276 |
|
|
0, /* bitpos */
|
| 1277 |
|
|
complain_overflow_dont,/* complain_on_overflow */
|
| 1278 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 1279 |
|
|
"R_ARM_MOVW_BREL_NC", /* name */
|
| 1280 |
|
|
FALSE, /* partial_inplace */
|
| 1281 |
|
|
0x0000ffff, /* src_mask */
|
| 1282 |
|
|
0x0000ffff, /* dst_mask */
|
| 1283 |
|
|
FALSE), /* pcrel_offset */
|
| 1284 |
|
|
|
| 1285 |
|
|
HOWTO (R_ARM_MOVT_BREL, /* type */
|
| 1286 |
|
|
0, /* rightshift */
|
| 1287 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1288 |
|
|
16, /* bitsize */
|
| 1289 |
|
|
FALSE, /* pc_relative */
|
| 1290 |
|
|
0, /* bitpos */
|
| 1291 |
|
|
complain_overflow_bitfield,/* complain_on_overflow */
|
| 1292 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 1293 |
|
|
"R_ARM_MOVT_BREL", /* name */
|
| 1294 |
|
|
FALSE, /* partial_inplace */
|
| 1295 |
|
|
0x0000ffff, /* src_mask */
|
| 1296 |
|
|
0x0000ffff, /* dst_mask */
|
| 1297 |
|
|
FALSE), /* pcrel_offset */
|
| 1298 |
|
|
|
| 1299 |
|
|
HOWTO (R_ARM_MOVW_BREL, /* type */
|
| 1300 |
|
|
0, /* rightshift */
|
| 1301 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1302 |
|
|
16, /* bitsize */
|
| 1303 |
|
|
FALSE, /* pc_relative */
|
| 1304 |
|
|
0, /* bitpos */
|
| 1305 |
|
|
complain_overflow_dont,/* complain_on_overflow */
|
| 1306 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 1307 |
|
|
"R_ARM_MOVW_BREL", /* name */
|
| 1308 |
|
|
FALSE, /* partial_inplace */
|
| 1309 |
|
|
0x0000ffff, /* src_mask */
|
| 1310 |
|
|
0x0000ffff, /* dst_mask */
|
| 1311 |
|
|
FALSE), /* pcrel_offset */
|
| 1312 |
|
|
|
| 1313 |
|
|
HOWTO (R_ARM_THM_MOVW_BREL_NC,/* type */
|
| 1314 |
|
|
0, /* rightshift */
|
| 1315 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1316 |
|
|
16, /* bitsize */
|
| 1317 |
|
|
FALSE, /* pc_relative */
|
| 1318 |
|
|
0, /* bitpos */
|
| 1319 |
|
|
complain_overflow_dont,/* complain_on_overflow */
|
| 1320 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 1321 |
|
|
"R_ARM_THM_MOVW_BREL_NC",/* name */
|
| 1322 |
|
|
FALSE, /* partial_inplace */
|
| 1323 |
|
|
0x040f70ff, /* src_mask */
|
| 1324 |
|
|
0x040f70ff, /* dst_mask */
|
| 1325 |
|
|
FALSE), /* pcrel_offset */
|
| 1326 |
|
|
|
| 1327 |
|
|
HOWTO (R_ARM_THM_MOVT_BREL, /* type */
|
| 1328 |
|
|
0, /* rightshift */
|
| 1329 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1330 |
|
|
16, /* bitsize */
|
| 1331 |
|
|
FALSE, /* pc_relative */
|
| 1332 |
|
|
0, /* bitpos */
|
| 1333 |
|
|
complain_overflow_bitfield,/* complain_on_overflow */
|
| 1334 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 1335 |
|
|
"R_ARM_THM_MOVT_BREL", /* name */
|
| 1336 |
|
|
FALSE, /* partial_inplace */
|
| 1337 |
|
|
0x040f70ff, /* src_mask */
|
| 1338 |
|
|
0x040f70ff, /* dst_mask */
|
| 1339 |
|
|
FALSE), /* pcrel_offset */
|
| 1340 |
|
|
|
| 1341 |
|
|
HOWTO (R_ARM_THM_MOVW_BREL, /* type */
|
| 1342 |
|
|
0, /* rightshift */
|
| 1343 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1344 |
|
|
16, /* bitsize */
|
| 1345 |
|
|
FALSE, /* pc_relative */
|
| 1346 |
|
|
0, /* bitpos */
|
| 1347 |
|
|
complain_overflow_dont,/* complain_on_overflow */
|
| 1348 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 1349 |
|
|
"R_ARM_THM_MOVW_BREL", /* name */
|
| 1350 |
|
|
FALSE, /* partial_inplace */
|
| 1351 |
|
|
0x040f70ff, /* src_mask */
|
| 1352 |
|
|
0x040f70ff, /* dst_mask */
|
| 1353 |
|
|
FALSE), /* pcrel_offset */
|
| 1354 |
|
|
|
| 1355 |
|
|
HOWTO (R_ARM_TLS_GOTDESC, /* type */
|
| 1356 |
|
|
0, /* rightshift */
|
| 1357 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1358 |
|
|
32, /* bitsize */
|
| 1359 |
|
|
FALSE, /* pc_relative */
|
| 1360 |
|
|
0, /* bitpos */
|
| 1361 |
|
|
complain_overflow_bitfield,/* complain_on_overflow */
|
| 1362 |
|
|
NULL, /* special_function */
|
| 1363 |
|
|
"R_ARM_TLS_GOTDESC", /* name */
|
| 1364 |
|
|
TRUE, /* partial_inplace */
|
| 1365 |
|
|
0xffffffff, /* src_mask */
|
| 1366 |
|
|
0xffffffff, /* dst_mask */
|
| 1367 |
|
|
FALSE), /* pcrel_offset */
|
| 1368 |
|
|
|
| 1369 |
|
|
HOWTO (R_ARM_TLS_CALL, /* type */
|
| 1370 |
|
|
0, /* rightshift */
|
| 1371 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1372 |
|
|
24, /* bitsize */
|
| 1373 |
|
|
FALSE, /* pc_relative */
|
| 1374 |
|
|
0, /* bitpos */
|
| 1375 |
|
|
complain_overflow_dont,/* complain_on_overflow */
|
| 1376 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 1377 |
|
|
"R_ARM_TLS_CALL", /* name */
|
| 1378 |
|
|
FALSE, /* partial_inplace */
|
| 1379 |
|
|
0x00ffffff, /* src_mask */
|
| 1380 |
|
|
0x00ffffff, /* dst_mask */
|
| 1381 |
|
|
FALSE), /* pcrel_offset */
|
| 1382 |
|
|
|
| 1383 |
|
|
HOWTO (R_ARM_TLS_DESCSEQ, /* type */
|
| 1384 |
|
|
0, /* rightshift */
|
| 1385 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1386 |
|
|
0, /* bitsize */
|
| 1387 |
|
|
FALSE, /* pc_relative */
|
| 1388 |
|
|
0, /* bitpos */
|
| 1389 |
|
|
complain_overflow_bitfield,/* complain_on_overflow */
|
| 1390 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 1391 |
|
|
"R_ARM_TLS_DESCSEQ", /* name */
|
| 1392 |
|
|
FALSE, /* partial_inplace */
|
| 1393 |
|
|
0x00000000, /* src_mask */
|
| 1394 |
|
|
0x00000000, /* dst_mask */
|
| 1395 |
|
|
FALSE), /* pcrel_offset */
|
| 1396 |
|
|
|
| 1397 |
|
|
HOWTO (R_ARM_THM_TLS_CALL, /* type */
|
| 1398 |
|
|
0, /* rightshift */
|
| 1399 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1400 |
|
|
24, /* bitsize */
|
| 1401 |
|
|
FALSE, /* pc_relative */
|
| 1402 |
|
|
0, /* bitpos */
|
| 1403 |
|
|
complain_overflow_dont,/* complain_on_overflow */
|
| 1404 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 1405 |
|
|
"R_ARM_THM_TLS_CALL", /* name */
|
| 1406 |
|
|
FALSE, /* partial_inplace */
|
| 1407 |
|
|
0x07ff07ff, /* src_mask */
|
| 1408 |
|
|
0x07ff07ff, /* dst_mask */
|
| 1409 |
|
|
FALSE), /* pcrel_offset */
|
| 1410 |
|
|
|
| 1411 |
|
|
HOWTO (R_ARM_PLT32_ABS, /* type */
|
| 1412 |
|
|
0, /* rightshift */
|
| 1413 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1414 |
|
|
32, /* bitsize */
|
| 1415 |
|
|
FALSE, /* pc_relative */
|
| 1416 |
|
|
0, /* bitpos */
|
| 1417 |
|
|
complain_overflow_dont,/* complain_on_overflow */
|
| 1418 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 1419 |
|
|
"R_ARM_PLT32_ABS", /* name */
|
| 1420 |
|
|
FALSE, /* partial_inplace */
|
| 1421 |
|
|
0xffffffff, /* src_mask */
|
| 1422 |
|
|
0xffffffff, /* dst_mask */
|
| 1423 |
|
|
FALSE), /* pcrel_offset */
|
| 1424 |
|
|
|
| 1425 |
|
|
HOWTO (R_ARM_GOT_ABS, /* type */
|
| 1426 |
|
|
0, /* rightshift */
|
| 1427 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1428 |
|
|
32, /* bitsize */
|
| 1429 |
|
|
FALSE, /* pc_relative */
|
| 1430 |
|
|
0, /* bitpos */
|
| 1431 |
|
|
complain_overflow_dont,/* complain_on_overflow */
|
| 1432 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 1433 |
|
|
"R_ARM_GOT_ABS", /* name */
|
| 1434 |
|
|
FALSE, /* partial_inplace */
|
| 1435 |
|
|
0xffffffff, /* src_mask */
|
| 1436 |
|
|
0xffffffff, /* dst_mask */
|
| 1437 |
|
|
FALSE), /* pcrel_offset */
|
| 1438 |
|
|
|
| 1439 |
|
|
HOWTO (R_ARM_GOT_PREL, /* type */
|
| 1440 |
|
|
0, /* rightshift */
|
| 1441 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1442 |
|
|
32, /* bitsize */
|
| 1443 |
|
|
TRUE, /* pc_relative */
|
| 1444 |
|
|
0, /* bitpos */
|
| 1445 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 1446 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 1447 |
|
|
"R_ARM_GOT_PREL", /* name */
|
| 1448 |
|
|
FALSE, /* partial_inplace */
|
| 1449 |
|
|
0xffffffff, /* src_mask */
|
| 1450 |
|
|
0xffffffff, /* dst_mask */
|
| 1451 |
|
|
TRUE), /* pcrel_offset */
|
| 1452 |
|
|
|
| 1453 |
|
|
HOWTO (R_ARM_GOT_BREL12, /* type */
|
| 1454 |
|
|
0, /* rightshift */
|
| 1455 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1456 |
|
|
12, /* bitsize */
|
| 1457 |
|
|
FALSE, /* pc_relative */
|
| 1458 |
|
|
0, /* bitpos */
|
| 1459 |
|
|
complain_overflow_bitfield,/* complain_on_overflow */
|
| 1460 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 1461 |
|
|
"R_ARM_GOT_BREL12", /* name */
|
| 1462 |
|
|
FALSE, /* partial_inplace */
|
| 1463 |
|
|
0x00000fff, /* src_mask */
|
| 1464 |
|
|
0x00000fff, /* dst_mask */
|
| 1465 |
|
|
FALSE), /* pcrel_offset */
|
| 1466 |
|
|
|
| 1467 |
|
|
HOWTO (R_ARM_GOTOFF12, /* type */
|
| 1468 |
|
|
0, /* rightshift */
|
| 1469 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1470 |
|
|
12, /* bitsize */
|
| 1471 |
|
|
FALSE, /* pc_relative */
|
| 1472 |
|
|
0, /* bitpos */
|
| 1473 |
|
|
complain_overflow_bitfield,/* complain_on_overflow */
|
| 1474 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 1475 |
|
|
"R_ARM_GOTOFF12", /* name */
|
| 1476 |
|
|
FALSE, /* partial_inplace */
|
| 1477 |
|
|
0x00000fff, /* src_mask */
|
| 1478 |
|
|
0x00000fff, /* dst_mask */
|
| 1479 |
|
|
FALSE), /* pcrel_offset */
|
| 1480 |
|
|
|
| 1481 |
|
|
EMPTY_HOWTO (R_ARM_GOTRELAX), /* reserved for future GOT-load optimizations */
|
| 1482 |
|
|
|
| 1483 |
|
|
/* GNU extension to record C++ vtable member usage */
|
| 1484 |
|
|
HOWTO (R_ARM_GNU_VTENTRY, /* type */
|
| 1485 |
|
|
0, /* rightshift */
|
| 1486 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1487 |
|
|
0, /* bitsize */
|
| 1488 |
|
|
FALSE, /* pc_relative */
|
| 1489 |
|
|
0, /* bitpos */
|
| 1490 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 1491 |
|
|
_bfd_elf_rel_vtable_reloc_fn, /* special_function */
|
| 1492 |
|
|
"R_ARM_GNU_VTENTRY", /* name */
|
| 1493 |
|
|
FALSE, /* partial_inplace */
|
| 1494 |
|
|
0, /* src_mask */
|
| 1495 |
|
|
0, /* dst_mask */
|
| 1496 |
|
|
FALSE), /* pcrel_offset */
|
| 1497 |
|
|
|
| 1498 |
|
|
/* GNU extension to record C++ vtable hierarchy */
|
| 1499 |
|
|
HOWTO (R_ARM_GNU_VTINHERIT, /* type */
|
| 1500 |
|
|
0, /* rightshift */
|
| 1501 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1502 |
|
|
0, /* bitsize */
|
| 1503 |
|
|
FALSE, /* pc_relative */
|
| 1504 |
|
|
0, /* bitpos */
|
| 1505 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 1506 |
|
|
NULL, /* special_function */
|
| 1507 |
|
|
"R_ARM_GNU_VTINHERIT", /* name */
|
| 1508 |
|
|
FALSE, /* partial_inplace */
|
| 1509 |
|
|
0, /* src_mask */
|
| 1510 |
|
|
0, /* dst_mask */
|
| 1511 |
|
|
FALSE), /* pcrel_offset */
|
| 1512 |
|
|
|
| 1513 |
|
|
HOWTO (R_ARM_THM_JUMP11, /* type */
|
| 1514 |
|
|
1, /* rightshift */
|
| 1515 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1516 |
|
|
11, /* bitsize */
|
| 1517 |
|
|
TRUE, /* pc_relative */
|
| 1518 |
|
|
0, /* bitpos */
|
| 1519 |
|
|
complain_overflow_signed, /* complain_on_overflow */
|
| 1520 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 1521 |
|
|
"R_ARM_THM_JUMP11", /* name */
|
| 1522 |
|
|
FALSE, /* partial_inplace */
|
| 1523 |
|
|
0x000007ff, /* src_mask */
|
| 1524 |
|
|
0x000007ff, /* dst_mask */
|
| 1525 |
|
|
TRUE), /* pcrel_offset */
|
| 1526 |
|
|
|
| 1527 |
|
|
HOWTO (R_ARM_THM_JUMP8, /* type */
|
| 1528 |
|
|
1, /* rightshift */
|
| 1529 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1530 |
|
|
8, /* bitsize */
|
| 1531 |
|
|
TRUE, /* pc_relative */
|
| 1532 |
|
|
0, /* bitpos */
|
| 1533 |
|
|
complain_overflow_signed, /* complain_on_overflow */
|
| 1534 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 1535 |
|
|
"R_ARM_THM_JUMP8", /* name */
|
| 1536 |
|
|
FALSE, /* partial_inplace */
|
| 1537 |
|
|
0x000000ff, /* src_mask */
|
| 1538 |
|
|
0x000000ff, /* dst_mask */
|
| 1539 |
|
|
TRUE), /* pcrel_offset */
|
| 1540 |
|
|
|
| 1541 |
|
|
/* TLS relocations */
|
| 1542 |
|
|
HOWTO (R_ARM_TLS_GD32, /* type */
|
| 1543 |
|
|
0, /* rightshift */
|
| 1544 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1545 |
|
|
32, /* bitsize */
|
| 1546 |
|
|
FALSE, /* pc_relative */
|
| 1547 |
|
|
0, /* bitpos */
|
| 1548 |
|
|
complain_overflow_bitfield,/* complain_on_overflow */
|
| 1549 |
|
|
NULL, /* special_function */
|
| 1550 |
|
|
"R_ARM_TLS_GD32", /* name */
|
| 1551 |
|
|
TRUE, /* partial_inplace */
|
| 1552 |
|
|
0xffffffff, /* src_mask */
|
| 1553 |
|
|
0xffffffff, /* dst_mask */
|
| 1554 |
|
|
FALSE), /* pcrel_offset */
|
| 1555 |
|
|
|
| 1556 |
|
|
HOWTO (R_ARM_TLS_LDM32, /* type */
|
| 1557 |
|
|
0, /* rightshift */
|
| 1558 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1559 |
|
|
32, /* bitsize */
|
| 1560 |
|
|
FALSE, /* pc_relative */
|
| 1561 |
|
|
0, /* bitpos */
|
| 1562 |
|
|
complain_overflow_bitfield,/* complain_on_overflow */
|
| 1563 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 1564 |
|
|
"R_ARM_TLS_LDM32", /* name */
|
| 1565 |
|
|
TRUE, /* partial_inplace */
|
| 1566 |
|
|
0xffffffff, /* src_mask */
|
| 1567 |
|
|
0xffffffff, /* dst_mask */
|
| 1568 |
|
|
FALSE), /* pcrel_offset */
|
| 1569 |
|
|
|
| 1570 |
|
|
HOWTO (R_ARM_TLS_LDO32, /* type */
|
| 1571 |
|
|
0, /* rightshift */
|
| 1572 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1573 |
|
|
32, /* bitsize */
|
| 1574 |
|
|
FALSE, /* pc_relative */
|
| 1575 |
|
|
0, /* bitpos */
|
| 1576 |
|
|
complain_overflow_bitfield,/* complain_on_overflow */
|
| 1577 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 1578 |
|
|
"R_ARM_TLS_LDO32", /* name */
|
| 1579 |
|
|
TRUE, /* partial_inplace */
|
| 1580 |
|
|
0xffffffff, /* src_mask */
|
| 1581 |
|
|
0xffffffff, /* dst_mask */
|
| 1582 |
|
|
FALSE), /* pcrel_offset */
|
| 1583 |
|
|
|
| 1584 |
|
|
HOWTO (R_ARM_TLS_IE32, /* type */
|
| 1585 |
|
|
0, /* rightshift */
|
| 1586 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1587 |
|
|
32, /* bitsize */
|
| 1588 |
|
|
FALSE, /* pc_relative */
|
| 1589 |
|
|
0, /* bitpos */
|
| 1590 |
|
|
complain_overflow_bitfield,/* complain_on_overflow */
|
| 1591 |
|
|
NULL, /* special_function */
|
| 1592 |
|
|
"R_ARM_TLS_IE32", /* name */
|
| 1593 |
|
|
TRUE, /* partial_inplace */
|
| 1594 |
|
|
0xffffffff, /* src_mask */
|
| 1595 |
|
|
0xffffffff, /* dst_mask */
|
| 1596 |
|
|
FALSE), /* pcrel_offset */
|
| 1597 |
|
|
|
| 1598 |
|
|
HOWTO (R_ARM_TLS_LE32, /* type */
|
| 1599 |
|
|
0, /* rightshift */
|
| 1600 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1601 |
|
|
32, /* bitsize */
|
| 1602 |
|
|
FALSE, /* pc_relative */
|
| 1603 |
|
|
0, /* bitpos */
|
| 1604 |
|
|
complain_overflow_bitfield,/* complain_on_overflow */
|
| 1605 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 1606 |
|
|
"R_ARM_TLS_LE32", /* name */
|
| 1607 |
|
|
TRUE, /* partial_inplace */
|
| 1608 |
|
|
0xffffffff, /* src_mask */
|
| 1609 |
|
|
0xffffffff, /* dst_mask */
|
| 1610 |
|
|
FALSE), /* pcrel_offset */
|
| 1611 |
|
|
|
| 1612 |
|
|
HOWTO (R_ARM_TLS_LDO12, /* type */
|
| 1613 |
|
|
0, /* rightshift */
|
| 1614 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1615 |
|
|
12, /* bitsize */
|
| 1616 |
|
|
FALSE, /* pc_relative */
|
| 1617 |
|
|
0, /* bitpos */
|
| 1618 |
|
|
complain_overflow_bitfield,/* complain_on_overflow */
|
| 1619 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 1620 |
|
|
"R_ARM_TLS_LDO12", /* name */
|
| 1621 |
|
|
FALSE, /* partial_inplace */
|
| 1622 |
|
|
0x00000fff, /* src_mask */
|
| 1623 |
|
|
0x00000fff, /* dst_mask */
|
| 1624 |
|
|
FALSE), /* pcrel_offset */
|
| 1625 |
|
|
|
| 1626 |
|
|
HOWTO (R_ARM_TLS_LE12, /* type */
|
| 1627 |
|
|
0, /* rightshift */
|
| 1628 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1629 |
|
|
12, /* bitsize */
|
| 1630 |
|
|
FALSE, /* pc_relative */
|
| 1631 |
|
|
0, /* bitpos */
|
| 1632 |
|
|
complain_overflow_bitfield,/* complain_on_overflow */
|
| 1633 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 1634 |
|
|
"R_ARM_TLS_LE12", /* name */
|
| 1635 |
|
|
FALSE, /* partial_inplace */
|
| 1636 |
|
|
0x00000fff, /* src_mask */
|
| 1637 |
|
|
0x00000fff, /* dst_mask */
|
| 1638 |
|
|
FALSE), /* pcrel_offset */
|
| 1639 |
|
|
|
| 1640 |
|
|
HOWTO (R_ARM_TLS_IE12GP, /* type */
|
| 1641 |
|
|
0, /* rightshift */
|
| 1642 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1643 |
|
|
12, /* bitsize */
|
| 1644 |
|
|
FALSE, /* pc_relative */
|
| 1645 |
|
|
0, /* bitpos */
|
| 1646 |
|
|
complain_overflow_bitfield,/* complain_on_overflow */
|
| 1647 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 1648 |
|
|
"R_ARM_TLS_IE12GP", /* name */
|
| 1649 |
|
|
FALSE, /* partial_inplace */
|
| 1650 |
|
|
0x00000fff, /* src_mask */
|
| 1651 |
|
|
0x00000fff, /* dst_mask */
|
| 1652 |
|
|
FALSE), /* pcrel_offset */
|
| 1653 |
|
|
|
| 1654 |
|
|
/* 112-127 private relocations. */
|
| 1655 |
|
|
EMPTY_HOWTO (112),
|
| 1656 |
|
|
EMPTY_HOWTO (113),
|
| 1657 |
|
|
EMPTY_HOWTO (114),
|
| 1658 |
|
|
EMPTY_HOWTO (115),
|
| 1659 |
|
|
EMPTY_HOWTO (116),
|
| 1660 |
|
|
EMPTY_HOWTO (117),
|
| 1661 |
|
|
EMPTY_HOWTO (118),
|
| 1662 |
|
|
EMPTY_HOWTO (119),
|
| 1663 |
|
|
EMPTY_HOWTO (120),
|
| 1664 |
|
|
EMPTY_HOWTO (121),
|
| 1665 |
|
|
EMPTY_HOWTO (122),
|
| 1666 |
|
|
EMPTY_HOWTO (123),
|
| 1667 |
|
|
EMPTY_HOWTO (124),
|
| 1668 |
|
|
EMPTY_HOWTO (125),
|
| 1669 |
|
|
EMPTY_HOWTO (126),
|
| 1670 |
|
|
EMPTY_HOWTO (127),
|
| 1671 |
|
|
|
| 1672 |
|
|
/* R_ARM_ME_TOO, obsolete. */
|
| 1673 |
|
|
EMPTY_HOWTO (128),
|
| 1674 |
|
|
|
| 1675 |
|
|
HOWTO (R_ARM_THM_TLS_DESCSEQ, /* type */
|
| 1676 |
|
|
0, /* rightshift */
|
| 1677 |
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1678 |
|
|
0, /* bitsize */
|
| 1679 |
|
|
FALSE, /* pc_relative */
|
| 1680 |
|
|
0, /* bitpos */
|
| 1681 |
|
|
complain_overflow_bitfield,/* complain_on_overflow */
|
| 1682 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 1683 |
|
|
"R_ARM_THM_TLS_DESCSEQ",/* name */
|
| 1684 |
|
|
FALSE, /* partial_inplace */
|
| 1685 |
|
|
0x00000000, /* src_mask */
|
| 1686 |
|
|
0x00000000, /* dst_mask */
|
| 1687 |
|
|
FALSE), /* pcrel_offset */
|
| 1688 |
|
|
};
|
| 1689 |
|
|
|
| 1690 |
|
|
/* 160 onwards: */
|
| 1691 |
|
|
static reloc_howto_type elf32_arm_howto_table_2[1] =
|
| 1692 |
|
|
{
|
| 1693 |
|
|
HOWTO (R_ARM_IRELATIVE, /* type */
|
| 1694 |
|
|
0, /* rightshift */
|
| 1695 |
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1696 |
|
|
32, /* bitsize */
|
| 1697 |
|
|
FALSE, /* pc_relative */
|
| 1698 |
|
|
0, /* bitpos */
|
| 1699 |
|
|
complain_overflow_bitfield,/* complain_on_overflow */
|
| 1700 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 1701 |
|
|
"R_ARM_IRELATIVE", /* name */
|
| 1702 |
|
|
TRUE, /* partial_inplace */
|
| 1703 |
|
|
0xffffffff, /* src_mask */
|
| 1704 |
|
|
0xffffffff, /* dst_mask */
|
| 1705 |
|
|
FALSE) /* pcrel_offset */
|
| 1706 |
|
|
};
|
| 1707 |
|
|
|
| 1708 |
|
|
/* 249-255 extended, currently unused, relocations: */
|
| 1709 |
|
|
static reloc_howto_type elf32_arm_howto_table_3[4] =
|
| 1710 |
|
|
{
|
| 1711 |
|
|
HOWTO (R_ARM_RREL32, /* type */
|
| 1712 |
|
|
0, /* rightshift */
|
| 1713 |
|
|
0, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1714 |
|
|
0, /* bitsize */
|
| 1715 |
|
|
FALSE, /* pc_relative */
|
| 1716 |
|
|
0, /* bitpos */
|
| 1717 |
|
|
complain_overflow_dont,/* complain_on_overflow */
|
| 1718 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 1719 |
|
|
"R_ARM_RREL32", /* name */
|
| 1720 |
|
|
FALSE, /* partial_inplace */
|
| 1721 |
|
|
0, /* src_mask */
|
| 1722 |
|
|
0, /* dst_mask */
|
| 1723 |
|
|
FALSE), /* pcrel_offset */
|
| 1724 |
|
|
|
| 1725 |
|
|
HOWTO (R_ARM_RABS32, /* type */
|
| 1726 |
|
|
0, /* rightshift */
|
| 1727 |
|
|
0, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1728 |
|
|
0, /* bitsize */
|
| 1729 |
|
|
FALSE, /* pc_relative */
|
| 1730 |
|
|
0, /* bitpos */
|
| 1731 |
|
|
complain_overflow_dont,/* complain_on_overflow */
|
| 1732 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 1733 |
|
|
"R_ARM_RABS32", /* name */
|
| 1734 |
|
|
FALSE, /* partial_inplace */
|
| 1735 |
|
|
0, /* src_mask */
|
| 1736 |
|
|
0, /* dst_mask */
|
| 1737 |
|
|
FALSE), /* pcrel_offset */
|
| 1738 |
|
|
|
| 1739 |
|
|
HOWTO (R_ARM_RPC24, /* type */
|
| 1740 |
|
|
0, /* rightshift */
|
| 1741 |
|
|
0, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1742 |
|
|
0, /* bitsize */
|
| 1743 |
|
|
FALSE, /* pc_relative */
|
| 1744 |
|
|
0, /* bitpos */
|
| 1745 |
|
|
complain_overflow_dont,/* complain_on_overflow */
|
| 1746 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 1747 |
|
|
"R_ARM_RPC24", /* name */
|
| 1748 |
|
|
FALSE, /* partial_inplace */
|
| 1749 |
|
|
0, /* src_mask */
|
| 1750 |
|
|
0, /* dst_mask */
|
| 1751 |
|
|
FALSE), /* pcrel_offset */
|
| 1752 |
|
|
|
| 1753 |
|
|
HOWTO (R_ARM_RBASE, /* type */
|
| 1754 |
|
|
0, /* rightshift */
|
| 1755 |
|
|
0, /* size (0 = byte, 1 = short, 2 = long) */
|
| 1756 |
|
|
0, /* bitsize */
|
| 1757 |
|
|
FALSE, /* pc_relative */
|
| 1758 |
|
|
0, /* bitpos */
|
| 1759 |
|
|
complain_overflow_dont,/* complain_on_overflow */
|
| 1760 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 1761 |
|
|
"R_ARM_RBASE", /* name */
|
| 1762 |
|
|
FALSE, /* partial_inplace */
|
| 1763 |
|
|
0, /* src_mask */
|
| 1764 |
|
|
0, /* dst_mask */
|
| 1765 |
|
|
FALSE) /* pcrel_offset */
|
| 1766 |
|
|
};
|
| 1767 |
|
|
|
| 1768 |
|
|
static reloc_howto_type *
|
| 1769 |
|
|
elf32_arm_howto_from_type (unsigned int r_type)
|
| 1770 |
|
|
{
|
| 1771 |
|
|
if (r_type < ARRAY_SIZE (elf32_arm_howto_table_1))
|
| 1772 |
|
|
return &elf32_arm_howto_table_1[r_type];
|
| 1773 |
|
|
|
| 1774 |
|
|
if (r_type == R_ARM_IRELATIVE)
|
| 1775 |
|
|
return &elf32_arm_howto_table_2[r_type - R_ARM_IRELATIVE];
|
| 1776 |
|
|
|
| 1777 |
|
|
if (r_type >= R_ARM_RREL32
|
| 1778 |
|
|
&& r_type < R_ARM_RREL32 + ARRAY_SIZE (elf32_arm_howto_table_3))
|
| 1779 |
|
|
return &elf32_arm_howto_table_3[r_type - R_ARM_RREL32];
|
| 1780 |
|
|
|
| 1781 |
|
|
return NULL;
|
| 1782 |
|
|
}
|
| 1783 |
|
|
|
| 1784 |
|
|
static void
|
| 1785 |
|
|
elf32_arm_info_to_howto (bfd * abfd ATTRIBUTE_UNUSED, arelent * bfd_reloc,
|
| 1786 |
|
|
Elf_Internal_Rela * elf_reloc)
|
| 1787 |
|
|
{
|
| 1788 |
|
|
unsigned int r_type;
|
| 1789 |
|
|
|
| 1790 |
|
|
r_type = ELF32_R_TYPE (elf_reloc->r_info);
|
| 1791 |
|
|
bfd_reloc->howto = elf32_arm_howto_from_type (r_type);
|
| 1792 |
|
|
}
|
| 1793 |
|
|
|
| 1794 |
|
|
struct elf32_arm_reloc_map
|
| 1795 |
|
|
{
|
| 1796 |
|
|
bfd_reloc_code_real_type bfd_reloc_val;
|
| 1797 |
|
|
unsigned char elf_reloc_val;
|
| 1798 |
|
|
};
|
| 1799 |
|
|
|
| 1800 |
|
|
/* All entries in this list must also be present in elf32_arm_howto_table. */
|
| 1801 |
|
|
static const struct elf32_arm_reloc_map elf32_arm_reloc_map[] =
|
| 1802 |
|
|
{
|
| 1803 |
|
|
{BFD_RELOC_NONE, R_ARM_NONE},
|
| 1804 |
|
|
{BFD_RELOC_ARM_PCREL_BRANCH, R_ARM_PC24},
|
| 1805 |
|
|
{BFD_RELOC_ARM_PCREL_CALL, R_ARM_CALL},
|
| 1806 |
|
|
{BFD_RELOC_ARM_PCREL_JUMP, R_ARM_JUMP24},
|
| 1807 |
|
|
{BFD_RELOC_ARM_PCREL_BLX, R_ARM_XPC25},
|
| 1808 |
|
|
{BFD_RELOC_THUMB_PCREL_BLX, R_ARM_THM_XPC22},
|
| 1809 |
|
|
{BFD_RELOC_32, R_ARM_ABS32},
|
| 1810 |
|
|
{BFD_RELOC_32_PCREL, R_ARM_REL32},
|
| 1811 |
|
|
{BFD_RELOC_8, R_ARM_ABS8},
|
| 1812 |
|
|
{BFD_RELOC_16, R_ARM_ABS16},
|
| 1813 |
|
|
{BFD_RELOC_ARM_OFFSET_IMM, R_ARM_ABS12},
|
| 1814 |
|
|
{BFD_RELOC_ARM_THUMB_OFFSET, R_ARM_THM_ABS5},
|
| 1815 |
|
|
{BFD_RELOC_THUMB_PCREL_BRANCH25, R_ARM_THM_JUMP24},
|
| 1816 |
|
|
{BFD_RELOC_THUMB_PCREL_BRANCH23, R_ARM_THM_CALL},
|
| 1817 |
|
|
{BFD_RELOC_THUMB_PCREL_BRANCH12, R_ARM_THM_JUMP11},
|
| 1818 |
|
|
{BFD_RELOC_THUMB_PCREL_BRANCH20, R_ARM_THM_JUMP19},
|
| 1819 |
|
|
{BFD_RELOC_THUMB_PCREL_BRANCH9, R_ARM_THM_JUMP8},
|
| 1820 |
|
|
{BFD_RELOC_THUMB_PCREL_BRANCH7, R_ARM_THM_JUMP6},
|
| 1821 |
|
|
{BFD_RELOC_ARM_GLOB_DAT, R_ARM_GLOB_DAT},
|
| 1822 |
|
|
{BFD_RELOC_ARM_JUMP_SLOT, R_ARM_JUMP_SLOT},
|
| 1823 |
|
|
{BFD_RELOC_ARM_RELATIVE, R_ARM_RELATIVE},
|
| 1824 |
|
|
{BFD_RELOC_ARM_GOTOFF, R_ARM_GOTOFF32},
|
| 1825 |
|
|
{BFD_RELOC_ARM_GOTPC, R_ARM_GOTPC},
|
| 1826 |
|
|
{BFD_RELOC_ARM_GOT_PREL, R_ARM_GOT_PREL},
|
| 1827 |
|
|
{BFD_RELOC_ARM_GOT32, R_ARM_GOT32},
|
| 1828 |
|
|
{BFD_RELOC_ARM_PLT32, R_ARM_PLT32},
|
| 1829 |
|
|
{BFD_RELOC_ARM_TARGET1, R_ARM_TARGET1},
|
| 1830 |
|
|
{BFD_RELOC_ARM_ROSEGREL32, R_ARM_ROSEGREL32},
|
| 1831 |
|
|
{BFD_RELOC_ARM_SBREL32, R_ARM_SBREL32},
|
| 1832 |
|
|
{BFD_RELOC_ARM_PREL31, R_ARM_PREL31},
|
| 1833 |
|
|
{BFD_RELOC_ARM_TARGET2, R_ARM_TARGET2},
|
| 1834 |
|
|
{BFD_RELOC_ARM_PLT32, R_ARM_PLT32},
|
| 1835 |
|
|
{BFD_RELOC_ARM_TLS_GOTDESC, R_ARM_TLS_GOTDESC},
|
| 1836 |
|
|
{BFD_RELOC_ARM_TLS_CALL, R_ARM_TLS_CALL},
|
| 1837 |
|
|
{BFD_RELOC_ARM_THM_TLS_CALL, R_ARM_THM_TLS_CALL},
|
| 1838 |
|
|
{BFD_RELOC_ARM_TLS_DESCSEQ, R_ARM_TLS_DESCSEQ},
|
| 1839 |
|
|
{BFD_RELOC_ARM_THM_TLS_DESCSEQ, R_ARM_THM_TLS_DESCSEQ},
|
| 1840 |
|
|
{BFD_RELOC_ARM_TLS_DESC, R_ARM_TLS_DESC},
|
| 1841 |
|
|
{BFD_RELOC_ARM_TLS_GD32, R_ARM_TLS_GD32},
|
| 1842 |
|
|
{BFD_RELOC_ARM_TLS_LDO32, R_ARM_TLS_LDO32},
|
| 1843 |
|
|
{BFD_RELOC_ARM_TLS_LDM32, R_ARM_TLS_LDM32},
|
| 1844 |
|
|
{BFD_RELOC_ARM_TLS_DTPMOD32, R_ARM_TLS_DTPMOD32},
|
| 1845 |
|
|
{BFD_RELOC_ARM_TLS_DTPOFF32, R_ARM_TLS_DTPOFF32},
|
| 1846 |
|
|
{BFD_RELOC_ARM_TLS_TPOFF32, R_ARM_TLS_TPOFF32},
|
| 1847 |
|
|
{BFD_RELOC_ARM_TLS_IE32, R_ARM_TLS_IE32},
|
| 1848 |
|
|
{BFD_RELOC_ARM_TLS_LE32, R_ARM_TLS_LE32},
|
| 1849 |
|
|
{BFD_RELOC_ARM_IRELATIVE, R_ARM_IRELATIVE},
|
| 1850 |
|
|
{BFD_RELOC_VTABLE_INHERIT, R_ARM_GNU_VTINHERIT},
|
| 1851 |
|
|
{BFD_RELOC_VTABLE_ENTRY, R_ARM_GNU_VTENTRY},
|
| 1852 |
|
|
{BFD_RELOC_ARM_MOVW, R_ARM_MOVW_ABS_NC},
|
| 1853 |
|
|
{BFD_RELOC_ARM_MOVT, R_ARM_MOVT_ABS},
|
| 1854 |
|
|
{BFD_RELOC_ARM_MOVW_PCREL, R_ARM_MOVW_PREL_NC},
|
| 1855 |
|
|
{BFD_RELOC_ARM_MOVT_PCREL, R_ARM_MOVT_PREL},
|
| 1856 |
|
|
{BFD_RELOC_ARM_THUMB_MOVW, R_ARM_THM_MOVW_ABS_NC},
|
| 1857 |
|
|
{BFD_RELOC_ARM_THUMB_MOVT, R_ARM_THM_MOVT_ABS},
|
| 1858 |
|
|
{BFD_RELOC_ARM_THUMB_MOVW_PCREL, R_ARM_THM_MOVW_PREL_NC},
|
| 1859 |
|
|
{BFD_RELOC_ARM_THUMB_MOVT_PCREL, R_ARM_THM_MOVT_PREL},
|
| 1860 |
|
|
{BFD_RELOC_ARM_ALU_PC_G0_NC, R_ARM_ALU_PC_G0_NC},
|
| 1861 |
|
|
{BFD_RELOC_ARM_ALU_PC_G0, R_ARM_ALU_PC_G0},
|
| 1862 |
|
|
{BFD_RELOC_ARM_ALU_PC_G1_NC, R_ARM_ALU_PC_G1_NC},
|
| 1863 |
|
|
{BFD_RELOC_ARM_ALU_PC_G1, R_ARM_ALU_PC_G1},
|
| 1864 |
|
|
{BFD_RELOC_ARM_ALU_PC_G2, R_ARM_ALU_PC_G2},
|
| 1865 |
|
|
{BFD_RELOC_ARM_LDR_PC_G0, R_ARM_LDR_PC_G0},
|
| 1866 |
|
|
{BFD_RELOC_ARM_LDR_PC_G1, R_ARM_LDR_PC_G1},
|
| 1867 |
|
|
{BFD_RELOC_ARM_LDR_PC_G2, R_ARM_LDR_PC_G2},
|
| 1868 |
|
|
{BFD_RELOC_ARM_LDRS_PC_G0, R_ARM_LDRS_PC_G0},
|
| 1869 |
|
|
{BFD_RELOC_ARM_LDRS_PC_G1, R_ARM_LDRS_PC_G1},
|
| 1870 |
|
|
{BFD_RELOC_ARM_LDRS_PC_G2, R_ARM_LDRS_PC_G2},
|
| 1871 |
|
|
{BFD_RELOC_ARM_LDC_PC_G0, R_ARM_LDC_PC_G0},
|
| 1872 |
|
|
{BFD_RELOC_ARM_LDC_PC_G1, R_ARM_LDC_PC_G1},
|
| 1873 |
|
|
{BFD_RELOC_ARM_LDC_PC_G2, R_ARM_LDC_PC_G2},
|
| 1874 |
|
|
{BFD_RELOC_ARM_ALU_SB_G0_NC, R_ARM_ALU_SB_G0_NC},
|
| 1875 |
|
|
{BFD_RELOC_ARM_ALU_SB_G0, R_ARM_ALU_SB_G0},
|
| 1876 |
|
|
{BFD_RELOC_ARM_ALU_SB_G1_NC, R_ARM_ALU_SB_G1_NC},
|
| 1877 |
|
|
{BFD_RELOC_ARM_ALU_SB_G1, R_ARM_ALU_SB_G1},
|
| 1878 |
|
|
{BFD_RELOC_ARM_ALU_SB_G2, R_ARM_ALU_SB_G2},
|
| 1879 |
|
|
{BFD_RELOC_ARM_LDR_SB_G0, R_ARM_LDR_SB_G0},
|
| 1880 |
|
|
{BFD_RELOC_ARM_LDR_SB_G1, R_ARM_LDR_SB_G1},
|
| 1881 |
|
|
{BFD_RELOC_ARM_LDR_SB_G2, R_ARM_LDR_SB_G2},
|
| 1882 |
|
|
{BFD_RELOC_ARM_LDRS_SB_G0, R_ARM_LDRS_SB_G0},
|
| 1883 |
|
|
{BFD_RELOC_ARM_LDRS_SB_G1, R_ARM_LDRS_SB_G1},
|
| 1884 |
|
|
{BFD_RELOC_ARM_LDRS_SB_G2, R_ARM_LDRS_SB_G2},
|
| 1885 |
|
|
{BFD_RELOC_ARM_LDC_SB_G0, R_ARM_LDC_SB_G0},
|
| 1886 |
|
|
{BFD_RELOC_ARM_LDC_SB_G1, R_ARM_LDC_SB_G1},
|
| 1887 |
|
|
{BFD_RELOC_ARM_LDC_SB_G2, R_ARM_LDC_SB_G2},
|
| 1888 |
|
|
{BFD_RELOC_ARM_V4BX, R_ARM_V4BX}
|
| 1889 |
|
|
};
|
| 1890 |
|
|
|
| 1891 |
|
|
static reloc_howto_type *
|
| 1892 |
|
|
elf32_arm_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
|
| 1893 |
|
|
bfd_reloc_code_real_type code)
|
| 1894 |
|
|
{
|
| 1895 |
|
|
unsigned int i;
|
| 1896 |
|
|
|
| 1897 |
|
|
for (i = 0; i < ARRAY_SIZE (elf32_arm_reloc_map); i ++)
|
| 1898 |
|
|
if (elf32_arm_reloc_map[i].bfd_reloc_val == code)
|
| 1899 |
|
|
return elf32_arm_howto_from_type (elf32_arm_reloc_map[i].elf_reloc_val);
|
| 1900 |
|
|
|
| 1901 |
|
|
return NULL;
|
| 1902 |
|
|
}
|
| 1903 |
|
|
|
| 1904 |
|
|
static reloc_howto_type *
|
| 1905 |
|
|
elf32_arm_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
|
| 1906 |
|
|
const char *r_name)
|
| 1907 |
|
|
{
|
| 1908 |
|
|
unsigned int i;
|
| 1909 |
|
|
|
| 1910 |
|
|
for (i = 0; i < ARRAY_SIZE (elf32_arm_howto_table_1); i++)
|
| 1911 |
|
|
if (elf32_arm_howto_table_1[i].name != NULL
|
| 1912 |
|
|
&& strcasecmp (elf32_arm_howto_table_1[i].name, r_name) == 0)
|
| 1913 |
|
|
return &elf32_arm_howto_table_1[i];
|
| 1914 |
|
|
|
| 1915 |
|
|
for (i = 0; i < ARRAY_SIZE (elf32_arm_howto_table_2); i++)
|
| 1916 |
|
|
if (elf32_arm_howto_table_2[i].name != NULL
|
| 1917 |
|
|
&& strcasecmp (elf32_arm_howto_table_2[i].name, r_name) == 0)
|
| 1918 |
|
|
return &elf32_arm_howto_table_2[i];
|
| 1919 |
|
|
|
| 1920 |
|
|
for (i = 0; i < ARRAY_SIZE (elf32_arm_howto_table_3); i++)
|
| 1921 |
|
|
if (elf32_arm_howto_table_3[i].name != NULL
|
| 1922 |
|
|
&& strcasecmp (elf32_arm_howto_table_3[i].name, r_name) == 0)
|
| 1923 |
|
|
return &elf32_arm_howto_table_3[i];
|
| 1924 |
|
|
|
| 1925 |
|
|
return NULL;
|
| 1926 |
|
|
}
|
| 1927 |
|
|
|
| 1928 |
|
|
/* Support for core dump NOTE sections. */
|
| 1929 |
|
|
|
| 1930 |
|
|
static bfd_boolean
|
| 1931 |
|
|
elf32_arm_nabi_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
|
| 1932 |
|
|
{
|
| 1933 |
|
|
int offset;
|
| 1934 |
|
|
size_t size;
|
| 1935 |
|
|
|
| 1936 |
|
|
switch (note->descsz)
|
| 1937 |
|
|
{
|
| 1938 |
|
|
default:
|
| 1939 |
|
|
return FALSE;
|
| 1940 |
|
|
|
| 1941 |
|
|
case 148: /* Linux/ARM 32-bit. */
|
| 1942 |
|
|
/* pr_cursig */
|
| 1943 |
|
|
elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
|
| 1944 |
|
|
|
| 1945 |
|
|
/* pr_pid */
|
| 1946 |
|
|
elf_tdata (abfd)->core_lwpid = bfd_get_32 (abfd, note->descdata + 24);
|
| 1947 |
|
|
|
| 1948 |
|
|
/* pr_reg */
|
| 1949 |
|
|
offset = 72;
|
| 1950 |
|
|
size = 72;
|
| 1951 |
|
|
|
| 1952 |
|
|
break;
|
| 1953 |
|
|
}
|
| 1954 |
|
|
|
| 1955 |
|
|
/* Make a ".reg/999" section. */
|
| 1956 |
|
|
return _bfd_elfcore_make_pseudosection (abfd, ".reg",
|
| 1957 |
|
|
size, note->descpos + offset);
|
| 1958 |
|
|
}
|
| 1959 |
|
|
|
| 1960 |
|
|
static bfd_boolean
|
| 1961 |
|
|
elf32_arm_nabi_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
|
| 1962 |
|
|
{
|
| 1963 |
|
|
switch (note->descsz)
|
| 1964 |
|
|
{
|
| 1965 |
|
|
default:
|
| 1966 |
|
|
return FALSE;
|
| 1967 |
|
|
|
| 1968 |
|
|
case 124: /* Linux/ARM elf_prpsinfo. */
|
| 1969 |
|
|
elf_tdata (abfd)->core_program
|
| 1970 |
|
|
= _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
|
| 1971 |
|
|
elf_tdata (abfd)->core_command
|
| 1972 |
|
|
= _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
|
| 1973 |
|
|
}
|
| 1974 |
|
|
|
| 1975 |
|
|
/* Note that for some reason, a spurious space is tacked
|
| 1976 |
|
|
onto the end of the args in some (at least one anyway)
|
| 1977 |
|
|
implementations, so strip it off if it exists. */
|
| 1978 |
|
|
{
|
| 1979 |
|
|
char *command = elf_tdata (abfd)->core_command;
|
| 1980 |
|
|
int n = strlen (command);
|
| 1981 |
|
|
|
| 1982 |
|
|
if (0 < n && command[n - 1] == ' ')
|
| 1983 |
|
|
command[n - 1] = '\0';
|
| 1984 |
|
|
}
|
| 1985 |
|
|
|
| 1986 |
|
|
return TRUE;
|
| 1987 |
|
|
}
|
| 1988 |
|
|
|
| 1989 |
|
|
#define TARGET_LITTLE_SYM bfd_elf32_littlearm_vec
|
| 1990 |
|
|
#define TARGET_LITTLE_NAME "elf32-littlearm"
|
| 1991 |
|
|
#define TARGET_BIG_SYM bfd_elf32_bigarm_vec
|
| 1992 |
|
|
#define TARGET_BIG_NAME "elf32-bigarm"
|
| 1993 |
|
|
|
| 1994 |
|
|
#define elf_backend_grok_prstatus elf32_arm_nabi_grok_prstatus
|
| 1995 |
|
|
#define elf_backend_grok_psinfo elf32_arm_nabi_grok_psinfo
|
| 1996 |
|
|
|
| 1997 |
|
|
typedef unsigned long int insn32;
|
| 1998 |
|
|
typedef unsigned short int insn16;
|
| 1999 |
|
|
|
| 2000 |
|
|
/* In lieu of proper flags, assume all EABIv4 or later objects are
|
| 2001 |
|
|
interworkable. */
|
| 2002 |
|
|
#define INTERWORK_FLAG(abfd) \
|
| 2003 |
|
|
(EF_ARM_EABI_VERSION (elf_elfheader (abfd)->e_flags) >= EF_ARM_EABI_VER4 \
|
| 2004 |
|
|
|| (elf_elfheader (abfd)->e_flags & EF_ARM_INTERWORK) \
|
| 2005 |
|
|
|| ((abfd)->flags & BFD_LINKER_CREATED))
|
| 2006 |
|
|
|
| 2007 |
|
|
/* The linker script knows the section names for placement.
|
| 2008 |
|
|
The entry_names are used to do simple name mangling on the stubs.
|
| 2009 |
|
|
Given a function name, and its type, the stub can be found. The
|
| 2010 |
|
|
name can be changed. The only requirement is the %s be present. */
|
| 2011 |
|
|
#define THUMB2ARM_GLUE_SECTION_NAME ".glue_7t"
|
| 2012 |
|
|
#define THUMB2ARM_GLUE_ENTRY_NAME "__%s_from_thumb"
|
| 2013 |
|
|
|
| 2014 |
|
|
#define ARM2THUMB_GLUE_SECTION_NAME ".glue_7"
|
| 2015 |
|
|
#define ARM2THUMB_GLUE_ENTRY_NAME "__%s_from_arm"
|
| 2016 |
|
|
|
| 2017 |
|
|
#define VFP11_ERRATUM_VENEER_SECTION_NAME ".vfp11_veneer"
|
| 2018 |
|
|
#define VFP11_ERRATUM_VENEER_ENTRY_NAME "__vfp11_veneer_%x"
|
| 2019 |
|
|
|
| 2020 |
|
|
#define ARM_BX_GLUE_SECTION_NAME ".v4_bx"
|
| 2021 |
|
|
#define ARM_BX_GLUE_ENTRY_NAME "__bx_r%d"
|
| 2022 |
|
|
|
| 2023 |
|
|
#define STUB_ENTRY_NAME "__%s_veneer"
|
| 2024 |
|
|
|
| 2025 |
|
|
/* The name of the dynamic interpreter. This is put in the .interp
|
| 2026 |
|
|
section. */
|
| 2027 |
|
|
#define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
|
| 2028 |
|
|
|
| 2029 |
|
|
static const unsigned long tls_trampoline [] =
|
| 2030 |
|
|
{
|
| 2031 |
|
|
0xe08e0000, /* add r0, lr, r0 */
|
| 2032 |
|
|
0xe5901004, /* ldr r1, [r0,#4] */
|
| 2033 |
|
|
0xe12fff11, /* bx r1 */
|
| 2034 |
|
|
};
|
| 2035 |
|
|
|
| 2036 |
|
|
static const unsigned long dl_tlsdesc_lazy_trampoline [] =
|
| 2037 |
|
|
{
|
| 2038 |
|
|
0xe52d2004, /* push {r2} */
|
| 2039 |
|
|
0xe59f200c, /* ldr r2, [pc, #3f - . - 8] */
|
| 2040 |
|
|
0xe59f100c, /* ldr r1, [pc, #4f - . - 8] */
|
| 2041 |
|
|
0xe79f2002, /* 1: ldr r2, [pc, r2] */
|
| 2042 |
|
|
0xe081100f, /* 2: add r1, pc */
|
| 2043 |
|
|
0xe12fff12, /* bx r2 */
|
| 2044 |
|
|
0x00000014, /* 3: .word _GLOBAL_OFFSET_TABLE_ - 1b - 8
|
| 2045 |
|
|
+ dl_tlsdesc_lazy_resolver(GOT) */
|
| 2046 |
|
|
0x00000018, /* 4: .word _GLOBAL_OFFSET_TABLE_ - 2b - 8 */
|
| 2047 |
|
|
};
|
| 2048 |
|
|
|
| 2049 |
|
|
#ifdef FOUR_WORD_PLT
|
| 2050 |
|
|
|
| 2051 |
|
|
/* The first entry in a procedure linkage table looks like
|
| 2052 |
|
|
this. It is set up so that any shared library function that is
|
| 2053 |
|
|
called before the relocation has been set up calls the dynamic
|
| 2054 |
|
|
linker first. */
|
| 2055 |
|
|
static const bfd_vma elf32_arm_plt0_entry [] =
|
| 2056 |
|
|
{
|
| 2057 |
|
|
0xe52de004, /* str lr, [sp, #-4]! */
|
| 2058 |
|
|
0xe59fe010, /* ldr lr, [pc, #16] */
|
| 2059 |
|
|
0xe08fe00e, /* add lr, pc, lr */
|
| 2060 |
|
|
0xe5bef008, /* ldr pc, [lr, #8]! */
|
| 2061 |
|
|
};
|
| 2062 |
|
|
|
| 2063 |
|
|
/* Subsequent entries in a procedure linkage table look like
|
| 2064 |
|
|
this. */
|
| 2065 |
|
|
static const bfd_vma elf32_arm_plt_entry [] =
|
| 2066 |
|
|
{
|
| 2067 |
|
|
0xe28fc600, /* add ip, pc, #NN */
|
| 2068 |
|
|
0xe28cca00, /* add ip, ip, #NN */
|
| 2069 |
|
|
0xe5bcf000, /* ldr pc, [ip, #NN]! */
|
| 2070 |
|
|
0x00000000, /* unused */
|
| 2071 |
|
|
};
|
| 2072 |
|
|
|
| 2073 |
|
|
#else
|
| 2074 |
|
|
|
| 2075 |
|
|
/* The first entry in a procedure linkage table looks like
|
| 2076 |
|
|
this. It is set up so that any shared library function that is
|
| 2077 |
|
|
called before the relocation has been set up calls the dynamic
|
| 2078 |
|
|
linker first. */
|
| 2079 |
|
|
static const bfd_vma elf32_arm_plt0_entry [] =
|
| 2080 |
|
|
{
|
| 2081 |
|
|
0xe52de004, /* str lr, [sp, #-4]! */
|
| 2082 |
|
|
0xe59fe004, /* ldr lr, [pc, #4] */
|
| 2083 |
|
|
0xe08fe00e, /* add lr, pc, lr */
|
| 2084 |
|
|
0xe5bef008, /* ldr pc, [lr, #8]! */
|
| 2085 |
|
|
0x00000000, /* &GOT[0] - . */
|
| 2086 |
|
|
};
|
| 2087 |
|
|
|
| 2088 |
|
|
/* Subsequent entries in a procedure linkage table look like
|
| 2089 |
|
|
this. */
|
| 2090 |
|
|
static const bfd_vma elf32_arm_plt_entry [] =
|
| 2091 |
|
|
{
|
| 2092 |
|
|
0xe28fc600, /* add ip, pc, #0xNN00000 */
|
| 2093 |
|
|
0xe28cca00, /* add ip, ip, #0xNN000 */
|
| 2094 |
|
|
0xe5bcf000, /* ldr pc, [ip, #0xNNN]! */
|
| 2095 |
|
|
};
|
| 2096 |
|
|
|
| 2097 |
|
|
#endif
|
| 2098 |
|
|
|
| 2099 |
|
|
/* The format of the first entry in the procedure linkage table
|
| 2100 |
|
|
for a VxWorks executable. */
|
| 2101 |
|
|
static const bfd_vma elf32_arm_vxworks_exec_plt0_entry[] =
|
| 2102 |
|
|
{
|
| 2103 |
|
|
0xe52dc008, /* str ip,[sp,#-8]! */
|
| 2104 |
|
|
0xe59fc000, /* ldr ip,[pc] */
|
| 2105 |
|
|
0xe59cf008, /* ldr pc,[ip,#8] */
|
| 2106 |
|
|
0x00000000, /* .long _GLOBAL_OFFSET_TABLE_ */
|
| 2107 |
|
|
};
|
| 2108 |
|
|
|
| 2109 |
|
|
/* The format of subsequent entries in a VxWorks executable. */
|
| 2110 |
|
|
static const bfd_vma elf32_arm_vxworks_exec_plt_entry[] =
|
| 2111 |
|
|
{
|
| 2112 |
|
|
0xe59fc000, /* ldr ip,[pc] */
|
| 2113 |
|
|
0xe59cf000, /* ldr pc,[ip] */
|
| 2114 |
|
|
0x00000000, /* .long @got */
|
| 2115 |
|
|
0xe59fc000, /* ldr ip,[pc] */
|
| 2116 |
|
|
0xea000000, /* b _PLT */
|
| 2117 |
|
|
0x00000000, /* .long @pltindex*sizeof(Elf32_Rela) */
|
| 2118 |
|
|
};
|
| 2119 |
|
|
|
| 2120 |
|
|
/* The format of entries in a VxWorks shared library. */
|
| 2121 |
|
|
static const bfd_vma elf32_arm_vxworks_shared_plt_entry[] =
|
| 2122 |
|
|
{
|
| 2123 |
|
|
0xe59fc000, /* ldr ip,[pc] */
|
| 2124 |
|
|
0xe79cf009, /* ldr pc,[ip,r9] */
|
| 2125 |
|
|
0x00000000, /* .long @got */
|
| 2126 |
|
|
0xe59fc000, /* ldr ip,[pc] */
|
| 2127 |
|
|
0xe599f008, /* ldr pc,[r9,#8] */
|
| 2128 |
|
|
0x00000000, /* .long @pltindex*sizeof(Elf32_Rela) */
|
| 2129 |
|
|
};
|
| 2130 |
|
|
|
| 2131 |
|
|
/* An initial stub used if the PLT entry is referenced from Thumb code. */
|
| 2132 |
|
|
#define PLT_THUMB_STUB_SIZE 4
|
| 2133 |
|
|
static const bfd_vma elf32_arm_plt_thumb_stub [] =
|
| 2134 |
|
|
{
|
| 2135 |
|
|
0x4778, /* bx pc */
|
| 2136 |
|
|
0x46c0 /* nop */
|
| 2137 |
|
|
};
|
| 2138 |
|
|
|
| 2139 |
|
|
/* The entries in a PLT when using a DLL-based target with multiple
|
| 2140 |
|
|
address spaces. */
|
| 2141 |
|
|
static const bfd_vma elf32_arm_symbian_plt_entry [] =
|
| 2142 |
|
|
{
|
| 2143 |
|
|
0xe51ff004, /* ldr pc, [pc, #-4] */
|
| 2144 |
|
|
0x00000000, /* dcd R_ARM_GLOB_DAT(X) */
|
| 2145 |
|
|
};
|
| 2146 |
|
|
|
| 2147 |
|
|
#define ARM_MAX_FWD_BRANCH_OFFSET ((((1 << 23) - 1) << 2) + 8)
|
| 2148 |
|
|
#define ARM_MAX_BWD_BRANCH_OFFSET ((-((1 << 23) << 2)) + 8)
|
| 2149 |
|
|
#define THM_MAX_FWD_BRANCH_OFFSET ((1 << 22) -2 + 4)
|
| 2150 |
|
|
#define THM_MAX_BWD_BRANCH_OFFSET (-(1 << 22) + 4)
|
| 2151 |
|
|
#define THM2_MAX_FWD_BRANCH_OFFSET (((1 << 24) - 2) + 4)
|
| 2152 |
|
|
#define THM2_MAX_BWD_BRANCH_OFFSET (-(1 << 24) + 4)
|
| 2153 |
|
|
|
| 2154 |
|
|
enum stub_insn_type
|
| 2155 |
|
|
{
|
| 2156 |
|
|
THUMB16_TYPE = 1,
|
| 2157 |
|
|
THUMB32_TYPE,
|
| 2158 |
|
|
ARM_TYPE,
|
| 2159 |
|
|
DATA_TYPE
|
| 2160 |
|
|
};
|
| 2161 |
|
|
|
| 2162 |
|
|
#define THUMB16_INSN(X) {(X), THUMB16_TYPE, R_ARM_NONE, 0}
|
| 2163 |
|
|
/* A bit of a hack. A Thumb conditional branch, in which the proper condition
|
| 2164 |
|
|
is inserted in arm_build_one_stub(). */
|
| 2165 |
|
|
#define THUMB16_BCOND_INSN(X) {(X), THUMB16_TYPE, R_ARM_NONE, 1}
|
| 2166 |
|
|
#define THUMB32_INSN(X) {(X), THUMB32_TYPE, R_ARM_NONE, 0}
|
| 2167 |
|
|
#define THUMB32_B_INSN(X, Z) {(X), THUMB32_TYPE, R_ARM_THM_JUMP24, (Z)}
|
| 2168 |
|
|
#define ARM_INSN(X) {(X), ARM_TYPE, R_ARM_NONE, 0}
|
| 2169 |
|
|
#define ARM_REL_INSN(X, Z) {(X), ARM_TYPE, R_ARM_JUMP24, (Z)}
|
| 2170 |
|
|
#define DATA_WORD(X,Y,Z) {(X), DATA_TYPE, (Y), (Z)}
|
| 2171 |
|
|
|
| 2172 |
|
|
typedef struct
|
| 2173 |
|
|
{
|
| 2174 |
|
|
bfd_vma data;
|
| 2175 |
|
|
enum stub_insn_type type;
|
| 2176 |
|
|
unsigned int r_type;
|
| 2177 |
|
|
int reloc_addend;
|
| 2178 |
|
|
} insn_sequence;
|
| 2179 |
|
|
|
| 2180 |
|
|
/* Arm/Thumb -> Arm/Thumb long branch stub. On V5T and above, use blx
|
| 2181 |
|
|
to reach the stub if necessary. */
|
| 2182 |
|
|
static const insn_sequence elf32_arm_stub_long_branch_any_any[] =
|
| 2183 |
|
|
{
|
| 2184 |
|
|
ARM_INSN(0xe51ff004), /* ldr pc, [pc, #-4] */
|
| 2185 |
|
|
DATA_WORD(0, R_ARM_ABS32, 0), /* dcd R_ARM_ABS32(X) */
|
| 2186 |
|
|
};
|
| 2187 |
|
|
|
| 2188 |
|
|
/* V4T Arm -> Thumb long branch stub. Used on V4T where blx is not
|
| 2189 |
|
|
available. */
|
| 2190 |
|
|
static const insn_sequence elf32_arm_stub_long_branch_v4t_arm_thumb[] =
|
| 2191 |
|
|
{
|
| 2192 |
|
|
ARM_INSN(0xe59fc000), /* ldr ip, [pc, #0] */
|
| 2193 |
|
|
ARM_INSN(0xe12fff1c), /* bx ip */
|
| 2194 |
|
|
DATA_WORD(0, R_ARM_ABS32, 0), /* dcd R_ARM_ABS32(X) */
|
| 2195 |
|
|
};
|
| 2196 |
|
|
|
| 2197 |
|
|
/* Thumb -> Thumb long branch stub. Used on M-profile architectures. */
|
| 2198 |
|
|
static const insn_sequence elf32_arm_stub_long_branch_thumb_only[] =
|
| 2199 |
|
|
{
|
| 2200 |
|
|
THUMB16_INSN(0xb401), /* push {r0} */
|
| 2201 |
|
|
THUMB16_INSN(0x4802), /* ldr r0, [pc, #8] */
|
| 2202 |
|
|
THUMB16_INSN(0x4684), /* mov ip, r0 */
|
| 2203 |
|
|
THUMB16_INSN(0xbc01), /* pop {r0} */
|
| 2204 |
|
|
THUMB16_INSN(0x4760), /* bx ip */
|
| 2205 |
|
|
THUMB16_INSN(0xbf00), /* nop */
|
| 2206 |
|
|
DATA_WORD(0, R_ARM_ABS32, 0), /* dcd R_ARM_ABS32(X) */
|
| 2207 |
|
|
};
|
| 2208 |
|
|
|
| 2209 |
|
|
/* V4T Thumb -> Thumb long branch stub. Using the stack is not
|
| 2210 |
|
|
allowed. */
|
| 2211 |
|
|
static const insn_sequence elf32_arm_stub_long_branch_v4t_thumb_thumb[] =
|
| 2212 |
|
|
{
|
| 2213 |
|
|
THUMB16_INSN(0x4778), /* bx pc */
|
| 2214 |
|
|
THUMB16_INSN(0x46c0), /* nop */
|
| 2215 |
|
|
ARM_INSN(0xe59fc000), /* ldr ip, [pc, #0] */
|
| 2216 |
|
|
ARM_INSN(0xe12fff1c), /* bx ip */
|
| 2217 |
|
|
DATA_WORD(0, R_ARM_ABS32, 0), /* dcd R_ARM_ABS32(X) */
|
| 2218 |
|
|
};
|
| 2219 |
|
|
|
| 2220 |
|
|
/* V4T Thumb -> ARM long branch stub. Used on V4T where blx is not
|
| 2221 |
|
|
available. */
|
| 2222 |
|
|
static const insn_sequence elf32_arm_stub_long_branch_v4t_thumb_arm[] =
|
| 2223 |
|
|
{
|
| 2224 |
|
|
THUMB16_INSN(0x4778), /* bx pc */
|
| 2225 |
|
|
THUMB16_INSN(0x46c0), /* nop */
|
| 2226 |
|
|
ARM_INSN(0xe51ff004), /* ldr pc, [pc, #-4] */
|
| 2227 |
|
|
DATA_WORD(0, R_ARM_ABS32, 0), /* dcd R_ARM_ABS32(X) */
|
| 2228 |
|
|
};
|
| 2229 |
|
|
|
| 2230 |
|
|
/* V4T Thumb -> ARM short branch stub. Shorter variant of the above
|
| 2231 |
|
|
one, when the destination is close enough. */
|
| 2232 |
|
|
static const insn_sequence elf32_arm_stub_short_branch_v4t_thumb_arm[] =
|
| 2233 |
|
|
{
|
| 2234 |
|
|
THUMB16_INSN(0x4778), /* bx pc */
|
| 2235 |
|
|
THUMB16_INSN(0x46c0), /* nop */
|
| 2236 |
|
|
ARM_REL_INSN(0xea000000, -8), /* b (X-8) */
|
| 2237 |
|
|
};
|
| 2238 |
|
|
|
| 2239 |
|
|
/* ARM/Thumb -> ARM long branch stub, PIC. On V5T and above, use
|
| 2240 |
|
|
blx to reach the stub if necessary. */
|
| 2241 |
|
|
static const insn_sequence elf32_arm_stub_long_branch_any_arm_pic[] =
|
| 2242 |
|
|
{
|
| 2243 |
|
|
ARM_INSN(0xe59fc000), /* ldr ip, [pc] */
|
| 2244 |
|
|
ARM_INSN(0xe08ff00c), /* add pc, pc, ip */
|
| 2245 |
|
|
DATA_WORD(0, R_ARM_REL32, -4), /* dcd R_ARM_REL32(X-4) */
|
| 2246 |
|
|
};
|
| 2247 |
|
|
|
| 2248 |
|
|
/* ARM/Thumb -> Thumb long branch stub, PIC. On V5T and above, use
|
| 2249 |
|
|
blx to reach the stub if necessary. We can not add into pc;
|
| 2250 |
|
|
it is not guaranteed to mode switch (different in ARMv6 and
|
| 2251 |
|
|
ARMv7). */
|
| 2252 |
|
|
static const insn_sequence elf32_arm_stub_long_branch_any_thumb_pic[] =
|
| 2253 |
|
|
{
|
| 2254 |
|
|
ARM_INSN(0xe59fc004), /* ldr ip, [pc, #4] */
|
| 2255 |
|
|
ARM_INSN(0xe08fc00c), /* add ip, pc, ip */
|
| 2256 |
|
|
ARM_INSN(0xe12fff1c), /* bx ip */
|
| 2257 |
|
|
DATA_WORD(0, R_ARM_REL32, 0), /* dcd R_ARM_REL32(X) */
|
| 2258 |
|
|
};
|
| 2259 |
|
|
|
| 2260 |
|
|
/* V4T ARM -> ARM long branch stub, PIC. */
|
| 2261 |
|
|
static const insn_sequence elf32_arm_stub_long_branch_v4t_arm_thumb_pic[] =
|
| 2262 |
|
|
{
|
| 2263 |
|
|
ARM_INSN(0xe59fc004), /* ldr ip, [pc, #4] */
|
| 2264 |
|
|
ARM_INSN(0xe08fc00c), /* add ip, pc, ip */
|
| 2265 |
|
|
ARM_INSN(0xe12fff1c), /* bx ip */
|
| 2266 |
|
|
DATA_WORD(0, R_ARM_REL32, 0), /* dcd R_ARM_REL32(X) */
|
| 2267 |
|
|
};
|
| 2268 |
|
|
|
| 2269 |
|
|
/* V4T Thumb -> ARM long branch stub, PIC. */
|
| 2270 |
|
|
static const insn_sequence elf32_arm_stub_long_branch_v4t_thumb_arm_pic[] =
|
| 2271 |
|
|
{
|
| 2272 |
|
|
THUMB16_INSN(0x4778), /* bx pc */
|
| 2273 |
|
|
THUMB16_INSN(0x46c0), /* nop */
|
| 2274 |
|
|
ARM_INSN(0xe59fc000), /* ldr ip, [pc, #0] */
|
| 2275 |
|
|
ARM_INSN(0xe08cf00f), /* add pc, ip, pc */
|
| 2276 |
|
|
DATA_WORD(0, R_ARM_REL32, -4), /* dcd R_ARM_REL32(X) */
|
| 2277 |
|
|
};
|
| 2278 |
|
|
|
| 2279 |
|
|
/* Thumb -> Thumb long branch stub, PIC. Used on M-profile
|
| 2280 |
|
|
architectures. */
|
| 2281 |
|
|
static const insn_sequence elf32_arm_stub_long_branch_thumb_only_pic[] =
|
| 2282 |
|
|
{
|
| 2283 |
|
|
THUMB16_INSN(0xb401), /* push {r0} */
|
| 2284 |
|
|
THUMB16_INSN(0x4802), /* ldr r0, [pc, #8] */
|
| 2285 |
|
|
THUMB16_INSN(0x46fc), /* mov ip, pc */
|
| 2286 |
|
|
THUMB16_INSN(0x4484), /* add ip, r0 */
|
| 2287 |
|
|
THUMB16_INSN(0xbc01), /* pop {r0} */
|
| 2288 |
|
|
THUMB16_INSN(0x4760), /* bx ip */
|
| 2289 |
|
|
DATA_WORD(0, R_ARM_REL32, 4), /* dcd R_ARM_REL32(X) */
|
| 2290 |
|
|
};
|
| 2291 |
|
|
|
| 2292 |
|
|
/* V4T Thumb -> Thumb long branch stub, PIC. Using the stack is not
|
| 2293 |
|
|
allowed. */
|
| 2294 |
|
|
static const insn_sequence elf32_arm_stub_long_branch_v4t_thumb_thumb_pic[] =
|
| 2295 |
|
|
{
|
| 2296 |
|
|
THUMB16_INSN(0x4778), /* bx pc */
|
| 2297 |
|
|
THUMB16_INSN(0x46c0), /* nop */
|
| 2298 |
|
|
ARM_INSN(0xe59fc004), /* ldr ip, [pc, #4] */
|
| 2299 |
|
|
ARM_INSN(0xe08fc00c), /* add ip, pc, ip */
|
| 2300 |
|
|
ARM_INSN(0xe12fff1c), /* bx ip */
|
| 2301 |
|
|
DATA_WORD(0, R_ARM_REL32, 0), /* dcd R_ARM_REL32(X) */
|
| 2302 |
|
|
};
|
| 2303 |
|
|
|
| 2304 |
|
|
/* Thumb2/ARM -> TLS trampoline. Lowest common denominator, which is a
|
| 2305 |
|
|
long PIC stub. We can use r1 as a scratch -- and cannot use ip. */
|
| 2306 |
|
|
static const insn_sequence elf32_arm_stub_long_branch_any_tls_pic[] =
|
| 2307 |
|
|
{
|
| 2308 |
|
|
ARM_INSN(0xe59f1000), /* ldr r1, [pc] */
|
| 2309 |
|
|
ARM_INSN(0xe08ff001), /* add pc, pc, r1 */
|
| 2310 |
|
|
DATA_WORD(0, R_ARM_REL32, -4), /* dcd R_ARM_REL32(X-4) */
|
| 2311 |
|
|
};
|
| 2312 |
|
|
|
| 2313 |
|
|
/* V4T Thumb -> TLS trampoline. lowest common denominator, which is a
|
| 2314 |
|
|
long PIC stub. We can use r1 as a scratch -- and cannot use ip. */
|
| 2315 |
|
|
static const insn_sequence elf32_arm_stub_long_branch_v4t_thumb_tls_pic[] =
|
| 2316 |
|
|
{
|
| 2317 |
|
|
THUMB16_INSN(0x4778), /* bx pc */
|
| 2318 |
|
|
THUMB16_INSN(0x46c0), /* nop */
|
| 2319 |
|
|
ARM_INSN(0xe59f1000), /* ldr r1, [pc, #0] */
|
| 2320 |
|
|
ARM_INSN(0xe081f00f), /* add pc, r1, pc */
|
| 2321 |
|
|
DATA_WORD(0, R_ARM_REL32, -4), /* dcd R_ARM_REL32(X) */
|
| 2322 |
|
|
};
|
| 2323 |
|
|
|
| 2324 |
|
|
/* Cortex-A8 erratum-workaround stubs. */
|
| 2325 |
|
|
|
| 2326 |
|
|
/* Stub used for conditional branches (which may be beyond +/-1MB away, so we
|
| 2327 |
|
|
can't use a conditional branch to reach this stub). */
|
| 2328 |
|
|
|
| 2329 |
|
|
static const insn_sequence elf32_arm_stub_a8_veneer_b_cond[] =
|
| 2330 |
|
|
{
|
| 2331 |
|
|
THUMB16_BCOND_INSN(0xd001), /* b<cond>.n true. */
|
| 2332 |
|
|
THUMB32_B_INSN(0xf000b800, -4), /* b.w insn_after_original_branch. */
|
| 2333 |
|
|
THUMB32_B_INSN(0xf000b800, -4) /* true: b.w original_branch_dest. */
|
| 2334 |
|
|
};
|
| 2335 |
|
|
|
| 2336 |
|
|
/* Stub used for b.w and bl.w instructions. */
|
| 2337 |
|
|
|
| 2338 |
|
|
static const insn_sequence elf32_arm_stub_a8_veneer_b[] =
|
| 2339 |
|
|
{
|
| 2340 |
|
|
THUMB32_B_INSN(0xf000b800, -4) /* b.w original_branch_dest. */
|
| 2341 |
|
|
};
|
| 2342 |
|
|
|
| 2343 |
|
|
static const insn_sequence elf32_arm_stub_a8_veneer_bl[] =
|
| 2344 |
|
|
{
|
| 2345 |
|
|
THUMB32_B_INSN(0xf000b800, -4) /* b.w original_branch_dest. */
|
| 2346 |
|
|
};
|
| 2347 |
|
|
|
| 2348 |
|
|
/* Stub used for Thumb-2 blx.w instructions. We modified the original blx.w
|
| 2349 |
|
|
instruction (which switches to ARM mode) to point to this stub. Jump to the
|
| 2350 |
|
|
real destination using an ARM-mode branch. */
|
| 2351 |
|
|
|
| 2352 |
|
|
static const insn_sequence elf32_arm_stub_a8_veneer_blx[] =
|
| 2353 |
|
|
{
|
| 2354 |
|
|
ARM_REL_INSN(0xea000000, -8) /* b original_branch_dest. */
|
| 2355 |
|
|
};
|
| 2356 |
|
|
|
| 2357 |
163 |
khays |
/* For each section group there can be a specially created linker section
|
| 2358 |
|
|
to hold the stubs for that group. The name of the stub section is based
|
| 2359 |
|
|
upon the name of another section within that group with the suffix below
|
| 2360 |
|
|
applied.
|
| 2361 |
14 |
khays |
|
| 2362 |
163 |
khays |
PR 13049: STUB_SUFFIX used to be ".stub", but this allowed the user to
|
| 2363 |
|
|
create what appeared to be a linker stub section when it actually
|
| 2364 |
|
|
contained user code/data. For example, consider this fragment:
|
| 2365 |
|
|
|
| 2366 |
|
|
const char * stubborn_problems[] = { "np" };
|
| 2367 |
|
|
|
| 2368 |
|
|
If this is compiled with "-fPIC -fdata-sections" then gcc produces a
|
| 2369 |
|
|
section called:
|
| 2370 |
|
|
|
| 2371 |
|
|
.data.rel.local.stubborn_problems
|
| 2372 |
|
|
|
| 2373 |
|
|
This then causes problems in arm32_arm_build_stubs() as it triggers:
|
| 2374 |
|
|
|
| 2375 |
|
|
// Ignore non-stub sections.
|
| 2376 |
|
|
if (!strstr (stub_sec->name, STUB_SUFFIX))
|
| 2377 |
|
|
continue;
|
| 2378 |
|
|
|
| 2379 |
|
|
And so the section would be ignored instead of being processed. Hence
|
| 2380 |
|
|
the change in definition of STUB_SUFFIX to a name that cannot be a valid
|
| 2381 |
|
|
C identifier. */
|
| 2382 |
|
|
#define STUB_SUFFIX ".__stub"
|
| 2383 |
|
|
|
| 2384 |
14 |
khays |
/* One entry per long/short branch stub defined above. */
|
| 2385 |
|
|
#define DEF_STUBS \
|
| 2386 |
|
|
DEF_STUB(long_branch_any_any) \
|
| 2387 |
|
|
DEF_STUB(long_branch_v4t_arm_thumb) \
|
| 2388 |
|
|
DEF_STUB(long_branch_thumb_only) \
|
| 2389 |
|
|
DEF_STUB(long_branch_v4t_thumb_thumb) \
|
| 2390 |
|
|
DEF_STUB(long_branch_v4t_thumb_arm) \
|
| 2391 |
|
|
DEF_STUB(short_branch_v4t_thumb_arm) \
|
| 2392 |
|
|
DEF_STUB(long_branch_any_arm_pic) \
|
| 2393 |
|
|
DEF_STUB(long_branch_any_thumb_pic) \
|
| 2394 |
|
|
DEF_STUB(long_branch_v4t_thumb_thumb_pic) \
|
| 2395 |
|
|
DEF_STUB(long_branch_v4t_arm_thumb_pic) \
|
| 2396 |
|
|
DEF_STUB(long_branch_v4t_thumb_arm_pic) \
|
| 2397 |
|
|
DEF_STUB(long_branch_thumb_only_pic) \
|
| 2398 |
|
|
DEF_STUB(long_branch_any_tls_pic) \
|
| 2399 |
|
|
DEF_STUB(long_branch_v4t_thumb_tls_pic) \
|
| 2400 |
|
|
DEF_STUB(a8_veneer_b_cond) \
|
| 2401 |
|
|
DEF_STUB(a8_veneer_b) \
|
| 2402 |
|
|
DEF_STUB(a8_veneer_bl) \
|
| 2403 |
|
|
DEF_STUB(a8_veneer_blx)
|
| 2404 |
|
|
|
| 2405 |
|
|
#define DEF_STUB(x) arm_stub_##x,
|
| 2406 |
|
|
enum elf32_arm_stub_type {
|
| 2407 |
|
|
arm_stub_none,
|
| 2408 |
|
|
DEF_STUBS
|
| 2409 |
|
|
/* Note the first a8_veneer type */
|
| 2410 |
|
|
arm_stub_a8_veneer_lwm = arm_stub_a8_veneer_b_cond
|
| 2411 |
|
|
};
|
| 2412 |
|
|
#undef DEF_STUB
|
| 2413 |
|
|
|
| 2414 |
|
|
typedef struct
|
| 2415 |
|
|
{
|
| 2416 |
|
|
const insn_sequence* template_sequence;
|
| 2417 |
|
|
int template_size;
|
| 2418 |
|
|
} stub_def;
|
| 2419 |
|
|
|
| 2420 |
|
|
#define DEF_STUB(x) {elf32_arm_stub_##x, ARRAY_SIZE(elf32_arm_stub_##x)},
|
| 2421 |
|
|
static const stub_def stub_definitions[] = {
|
| 2422 |
|
|
{NULL, 0},
|
| 2423 |
|
|
DEF_STUBS
|
| 2424 |
|
|
};
|
| 2425 |
|
|
|
| 2426 |
|
|
struct elf32_arm_stub_hash_entry
|
| 2427 |
|
|
{
|
| 2428 |
|
|
/* Base hash table entry structure. */
|
| 2429 |
|
|
struct bfd_hash_entry root;
|
| 2430 |
|
|
|
| 2431 |
|
|
/* The stub section. */
|
| 2432 |
|
|
asection *stub_sec;
|
| 2433 |
|
|
|
| 2434 |
|
|
/* Offset within stub_sec of the beginning of this stub. */
|
| 2435 |
|
|
bfd_vma stub_offset;
|
| 2436 |
|
|
|
| 2437 |
|
|
/* Given the symbol's value and its section we can determine its final
|
| 2438 |
|
|
value when building the stubs (so the stub knows where to jump). */
|
| 2439 |
|
|
bfd_vma target_value;
|
| 2440 |
|
|
asection *target_section;
|
| 2441 |
|
|
|
| 2442 |
|
|
/* Offset to apply to relocation referencing target_value. */
|
| 2443 |
|
|
bfd_vma target_addend;
|
| 2444 |
|
|
|
| 2445 |
|
|
/* The instruction which caused this stub to be generated (only valid for
|
| 2446 |
|
|
Cortex-A8 erratum workaround stubs at present). */
|
| 2447 |
|
|
unsigned long orig_insn;
|
| 2448 |
|
|
|
| 2449 |
|
|
/* The stub type. */
|
| 2450 |
|
|
enum elf32_arm_stub_type stub_type;
|
| 2451 |
|
|
/* Its encoding size in bytes. */
|
| 2452 |
|
|
int stub_size;
|
| 2453 |
|
|
/* Its template. */
|
| 2454 |
|
|
const insn_sequence *stub_template;
|
| 2455 |
|
|
/* The size of the template (number of entries). */
|
| 2456 |
|
|
int stub_template_size;
|
| 2457 |
|
|
|
| 2458 |
|
|
/* The symbol table entry, if any, that this was derived from. */
|
| 2459 |
|
|
struct elf32_arm_link_hash_entry *h;
|
| 2460 |
|
|
|
| 2461 |
|
|
/* Type of branch. */
|
| 2462 |
|
|
enum arm_st_branch_type branch_type;
|
| 2463 |
|
|
|
| 2464 |
|
|
/* Where this stub is being called from, or, in the case of combined
|
| 2465 |
|
|
stub sections, the first input section in the group. */
|
| 2466 |
|
|
asection *id_sec;
|
| 2467 |
|
|
|
| 2468 |
|
|
/* The name for the local symbol at the start of this stub. The
|
| 2469 |
|
|
stub name in the hash table has to be unique; this does not, so
|
| 2470 |
|
|
it can be friendlier. */
|
| 2471 |
|
|
char *output_name;
|
| 2472 |
|
|
};
|
| 2473 |
|
|
|
| 2474 |
|
|
/* Used to build a map of a section. This is required for mixed-endian
|
| 2475 |
|
|
code/data. */
|
| 2476 |
|
|
|
| 2477 |
|
|
typedef struct elf32_elf_section_map
|
| 2478 |
|
|
{
|
| 2479 |
|
|
bfd_vma vma;
|
| 2480 |
|
|
char type;
|
| 2481 |
|
|
}
|
| 2482 |
|
|
elf32_arm_section_map;
|
| 2483 |
|
|
|
| 2484 |
|
|
/* Information about a VFP11 erratum veneer, or a branch to such a veneer. */
|
| 2485 |
|
|
|
| 2486 |
|
|
typedef enum
|
| 2487 |
|
|
{
|
| 2488 |
|
|
VFP11_ERRATUM_BRANCH_TO_ARM_VENEER,
|
| 2489 |
|
|
VFP11_ERRATUM_BRANCH_TO_THUMB_VENEER,
|
| 2490 |
|
|
VFP11_ERRATUM_ARM_VENEER,
|
| 2491 |
|
|
VFP11_ERRATUM_THUMB_VENEER
|
| 2492 |
|
|
}
|
| 2493 |
|
|
elf32_vfp11_erratum_type;
|
| 2494 |
|
|
|
| 2495 |
|
|
typedef struct elf32_vfp11_erratum_list
|
| 2496 |
|
|
{
|
| 2497 |
|
|
struct elf32_vfp11_erratum_list *next;
|
| 2498 |
|
|
bfd_vma vma;
|
| 2499 |
|
|
union
|
| 2500 |
|
|
{
|
| 2501 |
|
|
struct
|
| 2502 |
|
|
{
|
| 2503 |
|
|
struct elf32_vfp11_erratum_list *veneer;
|
| 2504 |
|
|
unsigned int vfp_insn;
|
| 2505 |
|
|
} b;
|
| 2506 |
|
|
struct
|
| 2507 |
|
|
{
|
| 2508 |
|
|
struct elf32_vfp11_erratum_list *branch;
|
| 2509 |
|
|
unsigned int id;
|
| 2510 |
|
|
} v;
|
| 2511 |
|
|
} u;
|
| 2512 |
|
|
elf32_vfp11_erratum_type type;
|
| 2513 |
|
|
}
|
| 2514 |
|
|
elf32_vfp11_erratum_list;
|
| 2515 |
|
|
|
| 2516 |
|
|
typedef enum
|
| 2517 |
|
|
{
|
| 2518 |
|
|
DELETE_EXIDX_ENTRY,
|
| 2519 |
|
|
INSERT_EXIDX_CANTUNWIND_AT_END
|
| 2520 |
|
|
}
|
| 2521 |
|
|
arm_unwind_edit_type;
|
| 2522 |
|
|
|
| 2523 |
|
|
/* A (sorted) list of edits to apply to an unwind table. */
|
| 2524 |
|
|
typedef struct arm_unwind_table_edit
|
| 2525 |
|
|
{
|
| 2526 |
|
|
arm_unwind_edit_type type;
|
| 2527 |
|
|
/* Note: we sometimes want to insert an unwind entry corresponding to a
|
| 2528 |
|
|
section different from the one we're currently writing out, so record the
|
| 2529 |
|
|
(text) section this edit relates to here. */
|
| 2530 |
|
|
asection *linked_section;
|
| 2531 |
|
|
unsigned int index;
|
| 2532 |
|
|
struct arm_unwind_table_edit *next;
|
| 2533 |
|
|
}
|
| 2534 |
|
|
arm_unwind_table_edit;
|
| 2535 |
|
|
|
| 2536 |
|
|
typedef struct _arm_elf_section_data
|
| 2537 |
|
|
{
|
| 2538 |
|
|
/* Information about mapping symbols. */
|
| 2539 |
|
|
struct bfd_elf_section_data elf;
|
| 2540 |
|
|
unsigned int mapcount;
|
| 2541 |
|
|
unsigned int mapsize;
|
| 2542 |
|
|
elf32_arm_section_map *map;
|
| 2543 |
|
|
/* Information about CPU errata. */
|
| 2544 |
|
|
unsigned int erratumcount;
|
| 2545 |
|
|
elf32_vfp11_erratum_list *erratumlist;
|
| 2546 |
|
|
/* Information about unwind tables. */
|
| 2547 |
|
|
union
|
| 2548 |
|
|
{
|
| 2549 |
|
|
/* Unwind info attached to a text section. */
|
| 2550 |
|
|
struct
|
| 2551 |
|
|
{
|
| 2552 |
|
|
asection *arm_exidx_sec;
|
| 2553 |
|
|
} text;
|
| 2554 |
|
|
|
| 2555 |
|
|
/* Unwind info attached to an .ARM.exidx section. */
|
| 2556 |
|
|
struct
|
| 2557 |
|
|
{
|
| 2558 |
|
|
arm_unwind_table_edit *unwind_edit_list;
|
| 2559 |
|
|
arm_unwind_table_edit *unwind_edit_tail;
|
| 2560 |
|
|
} exidx;
|
| 2561 |
|
|
} u;
|
| 2562 |
|
|
}
|
| 2563 |
|
|
_arm_elf_section_data;
|
| 2564 |
|
|
|
| 2565 |
|
|
#define elf32_arm_section_data(sec) \
|
| 2566 |
|
|
((_arm_elf_section_data *) elf_section_data (sec))
|
| 2567 |
|
|
|
| 2568 |
|
|
/* A fix which might be required for Cortex-A8 Thumb-2 branch/TLB erratum.
|
| 2569 |
|
|
These fixes are subject to a relaxation procedure (in elf32_arm_size_stubs),
|
| 2570 |
|
|
so may be created multiple times: we use an array of these entries whilst
|
| 2571 |
|
|
relaxing which we can refresh easily, then create stubs for each potentially
|
| 2572 |
|
|
erratum-triggering instruction once we've settled on a solution. */
|
| 2573 |
|
|
|
| 2574 |
|
|
struct a8_erratum_fix {
|
| 2575 |
|
|
bfd *input_bfd;
|
| 2576 |
|
|
asection *section;
|
| 2577 |
|
|
bfd_vma offset;
|
| 2578 |
|
|
bfd_vma addend;
|
| 2579 |
|
|
unsigned long orig_insn;
|
| 2580 |
|
|
char *stub_name;
|
| 2581 |
|
|
enum elf32_arm_stub_type stub_type;
|
| 2582 |
|
|
enum arm_st_branch_type branch_type;
|
| 2583 |
|
|
};
|
| 2584 |
|
|
|
| 2585 |
|
|
/* A table of relocs applied to branches which might trigger Cortex-A8
|
| 2586 |
|
|
erratum. */
|
| 2587 |
|
|
|
| 2588 |
|
|
struct a8_erratum_reloc {
|
| 2589 |
|
|
bfd_vma from;
|
| 2590 |
|
|
bfd_vma destination;
|
| 2591 |
|
|
struct elf32_arm_link_hash_entry *hash;
|
| 2592 |
|
|
const char *sym_name;
|
| 2593 |
|
|
unsigned int r_type;
|
| 2594 |
|
|
enum arm_st_branch_type branch_type;
|
| 2595 |
|
|
bfd_boolean non_a8_stub;
|
| 2596 |
|
|
};
|
| 2597 |
|
|
|
| 2598 |
|
|
/* The size of the thread control block. */
|
| 2599 |
|
|
#define TCB_SIZE 8
|
| 2600 |
|
|
|
| 2601 |
|
|
/* ARM-specific information about a PLT entry, over and above the usual
|
| 2602 |
|
|
gotplt_union. */
|
| 2603 |
|
|
struct arm_plt_info {
|
| 2604 |
|
|
/* We reference count Thumb references to a PLT entry separately,
|
| 2605 |
|
|
so that we can emit the Thumb trampoline only if needed. */
|
| 2606 |
|
|
bfd_signed_vma thumb_refcount;
|
| 2607 |
|
|
|
| 2608 |
|
|
/* Some references from Thumb code may be eliminated by BL->BLX
|
| 2609 |
|
|
conversion, so record them separately. */
|
| 2610 |
|
|
bfd_signed_vma maybe_thumb_refcount;
|
| 2611 |
|
|
|
| 2612 |
|
|
/* How many of the recorded PLT accesses were from non-call relocations.
|
| 2613 |
|
|
This information is useful when deciding whether anything takes the
|
| 2614 |
|
|
address of an STT_GNU_IFUNC PLT. A value of 0 means that all
|
| 2615 |
|
|
non-call references to the function should resolve directly to the
|
| 2616 |
|
|
real runtime target. */
|
| 2617 |
|
|
unsigned int noncall_refcount;
|
| 2618 |
|
|
|
| 2619 |
|
|
/* Since PLT entries have variable size if the Thumb prologue is
|
| 2620 |
|
|
used, we need to record the index into .got.plt instead of
|
| 2621 |
|
|
recomputing it from the PLT offset. */
|
| 2622 |
|
|
bfd_signed_vma got_offset;
|
| 2623 |
|
|
};
|
| 2624 |
|
|
|
| 2625 |
|
|
/* Information about an .iplt entry for a local STT_GNU_IFUNC symbol. */
|
| 2626 |
|
|
struct arm_local_iplt_info {
|
| 2627 |
|
|
/* The information that is usually found in the generic ELF part of
|
| 2628 |
|
|
the hash table entry. */
|
| 2629 |
|
|
union gotplt_union root;
|
| 2630 |
|
|
|
| 2631 |
|
|
/* The information that is usually found in the ARM-specific part of
|
| 2632 |
|
|
the hash table entry. */
|
| 2633 |
|
|
struct arm_plt_info arm;
|
| 2634 |
|
|
|
| 2635 |
|
|
/* A list of all potential dynamic relocations against this symbol. */
|
| 2636 |
|
|
struct elf_dyn_relocs *dyn_relocs;
|
| 2637 |
|
|
};
|
| 2638 |
|
|
|
| 2639 |
|
|
struct elf_arm_obj_tdata
|
| 2640 |
|
|
{
|
| 2641 |
|
|
struct elf_obj_tdata root;
|
| 2642 |
|
|
|
| 2643 |
|
|
/* tls_type for each local got entry. */
|
| 2644 |
|
|
char *local_got_tls_type;
|
| 2645 |
|
|
|
| 2646 |
|
|
/* GOTPLT entries for TLS descriptors. */
|
| 2647 |
|
|
bfd_vma *local_tlsdesc_gotent;
|
| 2648 |
|
|
|
| 2649 |
|
|
/* Information for local symbols that need entries in .iplt. */
|
| 2650 |
|
|
struct arm_local_iplt_info **local_iplt;
|
| 2651 |
|
|
|
| 2652 |
|
|
/* Zero to warn when linking objects with incompatible enum sizes. */
|
| 2653 |
|
|
int no_enum_size_warning;
|
| 2654 |
|
|
|
| 2655 |
|
|
/* Zero to warn when linking objects with incompatible wchar_t sizes. */
|
| 2656 |
|
|
int no_wchar_size_warning;
|
| 2657 |
|
|
};
|
| 2658 |
|
|
|
| 2659 |
|
|
#define elf_arm_tdata(bfd) \
|
| 2660 |
|
|
((struct elf_arm_obj_tdata *) (bfd)->tdata.any)
|
| 2661 |
|
|
|
| 2662 |
|
|
#define elf32_arm_local_got_tls_type(bfd) \
|
| 2663 |
|
|
(elf_arm_tdata (bfd)->local_got_tls_type)
|
| 2664 |
|
|
|
| 2665 |
|
|
#define elf32_arm_local_tlsdesc_gotent(bfd) \
|
| 2666 |
|
|
(elf_arm_tdata (bfd)->local_tlsdesc_gotent)
|
| 2667 |
|
|
|
| 2668 |
|
|
#define elf32_arm_local_iplt(bfd) \
|
| 2669 |
|
|
(elf_arm_tdata (bfd)->local_iplt)
|
| 2670 |
|
|
|
| 2671 |
|
|
#define is_arm_elf(bfd) \
|
| 2672 |
|
|
(bfd_get_flavour (bfd) == bfd_target_elf_flavour \
|
| 2673 |
|
|
&& elf_tdata (bfd) != NULL \
|
| 2674 |
|
|
&& elf_object_id (bfd) == ARM_ELF_DATA)
|
| 2675 |
|
|
|
| 2676 |
|
|
static bfd_boolean
|
| 2677 |
|
|
elf32_arm_mkobject (bfd *abfd)
|
| 2678 |
|
|
{
|
| 2679 |
|
|
return bfd_elf_allocate_object (abfd, sizeof (struct elf_arm_obj_tdata),
|
| 2680 |
|
|
ARM_ELF_DATA);
|
| 2681 |
|
|
}
|
| 2682 |
|
|
|
| 2683 |
|
|
#define elf32_arm_hash_entry(ent) ((struct elf32_arm_link_hash_entry *)(ent))
|
| 2684 |
|
|
|
| 2685 |
|
|
/* Arm ELF linker hash entry. */
|
| 2686 |
|
|
struct elf32_arm_link_hash_entry
|
| 2687 |
|
|
{
|
| 2688 |
|
|
struct elf_link_hash_entry root;
|
| 2689 |
|
|
|
| 2690 |
|
|
/* Track dynamic relocs copied for this symbol. */
|
| 2691 |
|
|
struct elf_dyn_relocs *dyn_relocs;
|
| 2692 |
|
|
|
| 2693 |
|
|
/* ARM-specific PLT information. */
|
| 2694 |
|
|
struct arm_plt_info plt;
|
| 2695 |
|
|
|
| 2696 |
|
|
#define GOT_UNKNOWN 0
|
| 2697 |
|
|
#define GOT_NORMAL 1
|
| 2698 |
|
|
#define GOT_TLS_GD 2
|
| 2699 |
|
|
#define GOT_TLS_IE 4
|
| 2700 |
|
|
#define GOT_TLS_GDESC 8
|
| 2701 |
|
|
#define GOT_TLS_GD_ANY_P(type) ((type & GOT_TLS_GD) || (type & GOT_TLS_GDESC))
|
| 2702 |
|
|
unsigned int tls_type : 8;
|
| 2703 |
|
|
|
| 2704 |
|
|
/* True if the symbol's PLT entry is in .iplt rather than .plt. */
|
| 2705 |
|
|
unsigned int is_iplt : 1;
|
| 2706 |
|
|
|
| 2707 |
|
|
unsigned int unused : 23;
|
| 2708 |
|
|
|
| 2709 |
|
|
/* Offset of the GOTPLT entry reserved for the TLS descriptor,
|
| 2710 |
|
|
starting at the end of the jump table. */
|
| 2711 |
|
|
bfd_vma tlsdesc_got;
|
| 2712 |
|
|
|
| 2713 |
|
|
/* The symbol marking the real symbol location for exported thumb
|
| 2714 |
|
|
symbols with Arm stubs. */
|
| 2715 |
|
|
struct elf_link_hash_entry *export_glue;
|
| 2716 |
|
|
|
| 2717 |
|
|
/* A pointer to the most recently used stub hash entry against this
|
| 2718 |
|
|
symbol. */
|
| 2719 |
|
|
struct elf32_arm_stub_hash_entry *stub_cache;
|
| 2720 |
|
|
};
|
| 2721 |
|
|
|
| 2722 |
|
|
/* Traverse an arm ELF linker hash table. */
|
| 2723 |
|
|
#define elf32_arm_link_hash_traverse(table, func, info) \
|
| 2724 |
|
|
(elf_link_hash_traverse \
|
| 2725 |
|
|
(&(table)->root, \
|
| 2726 |
|
|
(bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \
|
| 2727 |
|
|
(info)))
|
| 2728 |
|
|
|
| 2729 |
|
|
/* Get the ARM elf linker hash table from a link_info structure. */
|
| 2730 |
|
|
#define elf32_arm_hash_table(info) \
|
| 2731 |
|
|
(elf_hash_table_id ((struct elf_link_hash_table *) ((info)->hash)) \
|
| 2732 |
|
|
== ARM_ELF_DATA ? ((struct elf32_arm_link_hash_table *) ((info)->hash)) : NULL)
|
| 2733 |
|
|
|
| 2734 |
|
|
#define arm_stub_hash_lookup(table, string, create, copy) \
|
| 2735 |
|
|
((struct elf32_arm_stub_hash_entry *) \
|
| 2736 |
|
|
bfd_hash_lookup ((table), (string), (create), (copy)))
|
| 2737 |
|
|
|
| 2738 |
|
|
/* Array to keep track of which stub sections have been created, and
|
| 2739 |
|
|
information on stub grouping. */
|
| 2740 |
|
|
struct map_stub
|
| 2741 |
|
|
{
|
| 2742 |
|
|
/* This is the section to which stubs in the group will be
|
| 2743 |
|
|
attached. */
|
| 2744 |
|
|
asection *link_sec;
|
| 2745 |
|
|
/* The stub section. */
|
| 2746 |
|
|
asection *stub_sec;
|
| 2747 |
|
|
};
|
| 2748 |
|
|
|
| 2749 |
|
|
#define elf32_arm_compute_jump_table_size(htab) \
|
| 2750 |
|
|
((htab)->next_tls_desc_index * 4)
|
| 2751 |
|
|
|
| 2752 |
|
|
/* ARM ELF linker hash table. */
|
| 2753 |
|
|
struct elf32_arm_link_hash_table
|
| 2754 |
|
|
{
|
| 2755 |
|
|
/* The main hash table. */
|
| 2756 |
|
|
struct elf_link_hash_table root;
|
| 2757 |
|
|
|
| 2758 |
|
|
/* The size in bytes of the section containing the Thumb-to-ARM glue. */
|
| 2759 |
|
|
bfd_size_type thumb_glue_size;
|
| 2760 |
|
|
|
| 2761 |
|
|
/* The size in bytes of the section containing the ARM-to-Thumb glue. */
|
| 2762 |
|
|
bfd_size_type arm_glue_size;
|
| 2763 |
|
|
|
| 2764 |
|
|
/* The size in bytes of section containing the ARMv4 BX veneers. */
|
| 2765 |
|
|
bfd_size_type bx_glue_size;
|
| 2766 |
|
|
|
| 2767 |
|
|
/* Offsets of ARMv4 BX veneers. Bit1 set if present, and Bit0 set when
|
| 2768 |
|
|
veneer has been populated. */
|
| 2769 |
|
|
bfd_vma bx_glue_offset[15];
|
| 2770 |
|
|
|
| 2771 |
|
|
/* The size in bytes of the section containing glue for VFP11 erratum
|
| 2772 |
|
|
veneers. */
|
| 2773 |
|
|
bfd_size_type vfp11_erratum_glue_size;
|
| 2774 |
|
|
|
| 2775 |
|
|
/* A table of fix locations for Cortex-A8 Thumb-2 branch/TLB erratum. This
|
| 2776 |
|
|
holds Cortex-A8 erratum fix locations between elf32_arm_size_stubs() and
|
| 2777 |
|
|
elf32_arm_write_section(). */
|
| 2778 |
|
|
struct a8_erratum_fix *a8_erratum_fixes;
|
| 2779 |
|
|
unsigned int num_a8_erratum_fixes;
|
| 2780 |
|
|
|
| 2781 |
|
|
/* An arbitrary input BFD chosen to hold the glue sections. */
|
| 2782 |
|
|
bfd * bfd_of_glue_owner;
|
| 2783 |
|
|
|
| 2784 |
|
|
/* Nonzero to output a BE8 image. */
|
| 2785 |
|
|
int byteswap_code;
|
| 2786 |
|
|
|
| 2787 |
|
|
/* Zero if R_ARM_TARGET1 means R_ARM_ABS32.
|
| 2788 |
|
|
Nonzero if R_ARM_TARGET1 means R_ARM_REL32. */
|
| 2789 |
|
|
int target1_is_rel;
|
| 2790 |
|
|
|
| 2791 |
|
|
/* The relocation to use for R_ARM_TARGET2 relocations. */
|
| 2792 |
|
|
int target2_reloc;
|
| 2793 |
|
|
|
| 2794 |
|
|
/* 0 = Ignore R_ARM_V4BX.
|
| 2795 |
|
|
1 = Convert BX to MOV PC.
|
| 2796 |
|
|
2 = Generate v4 interworing stubs. */
|
| 2797 |
|
|
int fix_v4bx;
|
| 2798 |
|
|
|
| 2799 |
|
|
/* Whether we should fix the Cortex-A8 Thumb-2 branch/TLB erratum. */
|
| 2800 |
|
|
int fix_cortex_a8;
|
| 2801 |
|
|
|
| 2802 |
161 |
khays |
/* Whether we should fix the ARM1176 BLX immediate issue. */
|
| 2803 |
|
|
int fix_arm1176;
|
| 2804 |
|
|
|
| 2805 |
14 |
khays |
/* Nonzero if the ARM/Thumb BLX instructions are available for use. */
|
| 2806 |
|
|
int use_blx;
|
| 2807 |
|
|
|
| 2808 |
|
|
/* What sort of code sequences we should look for which may trigger the
|
| 2809 |
|
|
VFP11 denorm erratum. */
|
| 2810 |
|
|
bfd_arm_vfp11_fix vfp11_fix;
|
| 2811 |
|
|
|
| 2812 |
|
|
/* Global counter for the number of fixes we have emitted. */
|
| 2813 |
|
|
int num_vfp11_fixes;
|
| 2814 |
|
|
|
| 2815 |
|
|
/* Nonzero to force PIC branch veneers. */
|
| 2816 |
|
|
int pic_veneer;
|
| 2817 |
|
|
|
| 2818 |
|
|
/* The number of bytes in the initial entry in the PLT. */
|
| 2819 |
|
|
bfd_size_type plt_header_size;
|
| 2820 |
|
|
|
| 2821 |
|
|
/* The number of bytes in the subsequent PLT etries. */
|
| 2822 |
|
|
bfd_size_type plt_entry_size;
|
| 2823 |
|
|
|
| 2824 |
|
|
/* True if the target system is VxWorks. */
|
| 2825 |
|
|
int vxworks_p;
|
| 2826 |
|
|
|
| 2827 |
|
|
/* True if the target system is Symbian OS. */
|
| 2828 |
|
|
int symbian_p;
|
| 2829 |
|
|
|
| 2830 |
|
|
/* True if the target uses REL relocations. */
|
| 2831 |
|
|
int use_rel;
|
| 2832 |
|
|
|
| 2833 |
|
|
/* The index of the next unused R_ARM_TLS_DESC slot in .rel.plt. */
|
| 2834 |
|
|
bfd_vma next_tls_desc_index;
|
| 2835 |
|
|
|
| 2836 |
|
|
/* How many R_ARM_TLS_DESC relocations were generated so far. */
|
| 2837 |
|
|
bfd_vma num_tls_desc;
|
| 2838 |
|
|
|
| 2839 |
|
|
/* Short-cuts to get to dynamic linker sections. */
|
| 2840 |
|
|
asection *sdynbss;
|
| 2841 |
|
|
asection *srelbss;
|
| 2842 |
|
|
|
| 2843 |
|
|
/* The (unloaded but important) VxWorks .rela.plt.unloaded section. */
|
| 2844 |
|
|
asection *srelplt2;
|
| 2845 |
|
|
|
| 2846 |
|
|
/* The offset into splt of the PLT entry for the TLS descriptor
|
| 2847 |
|
|
resolver. Special values are 0, if not necessary (or not found
|
| 2848 |
|
|
to be necessary yet), and -1 if needed but not determined
|
| 2849 |
|
|
yet. */
|
| 2850 |
|
|
bfd_vma dt_tlsdesc_plt;
|
| 2851 |
|
|
|
| 2852 |
|
|
/* The offset into sgot of the GOT entry used by the PLT entry
|
| 2853 |
|
|
above. */
|
| 2854 |
|
|
bfd_vma dt_tlsdesc_got;
|
| 2855 |
|
|
|
| 2856 |
|
|
/* Offset in .plt section of tls_arm_trampoline. */
|
| 2857 |
|
|
bfd_vma tls_trampoline;
|
| 2858 |
|
|
|
| 2859 |
|
|
/* Data for R_ARM_TLS_LDM32 relocations. */
|
| 2860 |
|
|
union
|
| 2861 |
|
|
{
|
| 2862 |
|
|
bfd_signed_vma refcount;
|
| 2863 |
|
|
bfd_vma offset;
|
| 2864 |
|
|
} tls_ldm_got;
|
| 2865 |
|
|
|
| 2866 |
|
|
/* Small local sym cache. */
|
| 2867 |
|
|
struct sym_cache sym_cache;
|
| 2868 |
|
|
|
| 2869 |
|
|
/* For convenience in allocate_dynrelocs. */
|
| 2870 |
|
|
bfd * obfd;
|
| 2871 |
|
|
|
| 2872 |
|
|
/* The amount of space used by the reserved portion of the sgotplt
|
| 2873 |
|
|
section, plus whatever space is used by the jump slots. */
|
| 2874 |
|
|
bfd_vma sgotplt_jump_table_size;
|
| 2875 |
|
|
|
| 2876 |
|
|
/* The stub hash table. */
|
| 2877 |
|
|
struct bfd_hash_table stub_hash_table;
|
| 2878 |
|
|
|
| 2879 |
|
|
/* Linker stub bfd. */
|
| 2880 |
|
|
bfd *stub_bfd;
|
| 2881 |
|
|
|
| 2882 |
|
|
/* Linker call-backs. */
|
| 2883 |
|
|
asection * (*add_stub_section) (const char *, asection *);
|
| 2884 |
|
|
void (*layout_sections_again) (void);
|
| 2885 |
|
|
|
| 2886 |
|
|
/* Array to keep track of which stub sections have been created, and
|
| 2887 |
|
|
information on stub grouping. */
|
| 2888 |
|
|
struct map_stub *stub_group;
|
| 2889 |
|
|
|
| 2890 |
|
|
/* Number of elements in stub_group. */
|
| 2891 |
|
|
int top_id;
|
| 2892 |
|
|
|
| 2893 |
|
|
/* Assorted information used by elf32_arm_size_stubs. */
|
| 2894 |
|
|
unsigned int bfd_count;
|
| 2895 |
|
|
int top_index;
|
| 2896 |
|
|
asection **input_list;
|
| 2897 |
|
|
};
|
| 2898 |
|
|
|
| 2899 |
|
|
/* Create an entry in an ARM ELF linker hash table. */
|
| 2900 |
|
|
|
| 2901 |
|
|
static struct bfd_hash_entry *
|
| 2902 |
|
|
elf32_arm_link_hash_newfunc (struct bfd_hash_entry * entry,
|
| 2903 |
|
|
struct bfd_hash_table * table,
|
| 2904 |
|
|
const char * string)
|
| 2905 |
|
|
{
|
| 2906 |
|
|
struct elf32_arm_link_hash_entry * ret =
|
| 2907 |
|
|
(struct elf32_arm_link_hash_entry *) entry;
|
| 2908 |
|
|
|
| 2909 |
|
|
/* Allocate the structure if it has not already been allocated by a
|
| 2910 |
|
|
subclass. */
|
| 2911 |
|
|
if (ret == NULL)
|
| 2912 |
|
|
ret = (struct elf32_arm_link_hash_entry *)
|
| 2913 |
|
|
bfd_hash_allocate (table, sizeof (struct elf32_arm_link_hash_entry));
|
| 2914 |
|
|
if (ret == NULL)
|
| 2915 |
|
|
return (struct bfd_hash_entry *) ret;
|
| 2916 |
|
|
|
| 2917 |
|
|
/* Call the allocation method of the superclass. */
|
| 2918 |
|
|
ret = ((struct elf32_arm_link_hash_entry *)
|
| 2919 |
|
|
_bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
|
| 2920 |
|
|
table, string));
|
| 2921 |
|
|
if (ret != NULL)
|
| 2922 |
|
|
{
|
| 2923 |
|
|
ret->dyn_relocs = NULL;
|
| 2924 |
|
|
ret->tls_type = GOT_UNKNOWN;
|
| 2925 |
|
|
ret->tlsdesc_got = (bfd_vma) -1;
|
| 2926 |
|
|
ret->plt.thumb_refcount = 0;
|
| 2927 |
|
|
ret->plt.maybe_thumb_refcount = 0;
|
| 2928 |
|
|
ret->plt.noncall_refcount = 0;
|
| 2929 |
|
|
ret->plt.got_offset = -1;
|
| 2930 |
|
|
ret->is_iplt = FALSE;
|
| 2931 |
|
|
ret->export_glue = NULL;
|
| 2932 |
|
|
|
| 2933 |
|
|
ret->stub_cache = NULL;
|
| 2934 |
|
|
}
|
| 2935 |
|
|
|
| 2936 |
|
|
return (struct bfd_hash_entry *) ret;
|
| 2937 |
|
|
}
|
| 2938 |
|
|
|
| 2939 |
|
|
/* Ensure that we have allocated bookkeeping structures for ABFD's local
|
| 2940 |
|
|
symbols. */
|
| 2941 |
|
|
|
| 2942 |
|
|
static bfd_boolean
|
| 2943 |
|
|
elf32_arm_allocate_local_sym_info (bfd *abfd)
|
| 2944 |
|
|
{
|
| 2945 |
|
|
if (elf_local_got_refcounts (abfd) == NULL)
|
| 2946 |
|
|
{
|
| 2947 |
|
|
bfd_size_type num_syms;
|
| 2948 |
|
|
bfd_size_type size;
|
| 2949 |
|
|
char *data;
|
| 2950 |
|
|
|
| 2951 |
|
|
num_syms = elf_tdata (abfd)->symtab_hdr.sh_info;
|
| 2952 |
|
|
size = num_syms * (sizeof (bfd_signed_vma)
|
| 2953 |
|
|
+ sizeof (struct arm_local_iplt_info *)
|
| 2954 |
|
|
+ sizeof (bfd_vma)
|
| 2955 |
|
|
+ sizeof (char));
|
| 2956 |
|
|
data = bfd_zalloc (abfd, size);
|
| 2957 |
|
|
if (data == NULL)
|
| 2958 |
|
|
return FALSE;
|
| 2959 |
|
|
|
| 2960 |
|
|
elf_local_got_refcounts (abfd) = (bfd_signed_vma *) data;
|
| 2961 |
|
|
data += num_syms * sizeof (bfd_signed_vma);
|
| 2962 |
|
|
|
| 2963 |
|
|
elf32_arm_local_iplt (abfd) = (struct arm_local_iplt_info **) data;
|
| 2964 |
|
|
data += num_syms * sizeof (struct arm_local_iplt_info *);
|
| 2965 |
|
|
|
| 2966 |
|
|
elf32_arm_local_tlsdesc_gotent (abfd) = (bfd_vma *) data;
|
| 2967 |
|
|
data += num_syms * sizeof (bfd_vma);
|
| 2968 |
|
|
|
| 2969 |
|
|
elf32_arm_local_got_tls_type (abfd) = data;
|
| 2970 |
|
|
}
|
| 2971 |
|
|
return TRUE;
|
| 2972 |
|
|
}
|
| 2973 |
|
|
|
| 2974 |
|
|
/* Return the .iplt information for local symbol R_SYMNDX, which belongs
|
| 2975 |
|
|
to input bfd ABFD. Create the information if it doesn't already exist.
|
| 2976 |
|
|
Return null if an allocation fails. */
|
| 2977 |
|
|
|
| 2978 |
|
|
static struct arm_local_iplt_info *
|
| 2979 |
|
|
elf32_arm_create_local_iplt (bfd *abfd, unsigned long r_symndx)
|
| 2980 |
|
|
{
|
| 2981 |
|
|
struct arm_local_iplt_info **ptr;
|
| 2982 |
|
|
|
| 2983 |
|
|
if (!elf32_arm_allocate_local_sym_info (abfd))
|
| 2984 |
|
|
return NULL;
|
| 2985 |
|
|
|
| 2986 |
|
|
BFD_ASSERT (r_symndx < elf_tdata (abfd)->symtab_hdr.sh_info);
|
| 2987 |
|
|
ptr = &elf32_arm_local_iplt (abfd)[r_symndx];
|
| 2988 |
|
|
if (*ptr == NULL)
|
| 2989 |
|
|
*ptr = bfd_zalloc (abfd, sizeof (**ptr));
|
| 2990 |
|
|
return *ptr;
|
| 2991 |
|
|
}
|
| 2992 |
|
|
|
| 2993 |
|
|
/* Try to obtain PLT information for the symbol with index R_SYMNDX
|
| 2994 |
|
|
in ABFD's symbol table. If the symbol is global, H points to its
|
| 2995 |
|
|
hash table entry, otherwise H is null.
|
| 2996 |
|
|
|
| 2997 |
|
|
Return true if the symbol does have PLT information. When returning
|
| 2998 |
|
|
true, point *ROOT_PLT at the target-independent reference count/offset
|
| 2999 |
|
|
union and *ARM_PLT at the ARM-specific information. */
|
| 3000 |
|
|
|
| 3001 |
|
|
static bfd_boolean
|
| 3002 |
|
|
elf32_arm_get_plt_info (bfd *abfd, struct elf32_arm_link_hash_entry *h,
|
| 3003 |
|
|
unsigned long r_symndx, union gotplt_union **root_plt,
|
| 3004 |
|
|
struct arm_plt_info **arm_plt)
|
| 3005 |
|
|
{
|
| 3006 |
|
|
struct arm_local_iplt_info *local_iplt;
|
| 3007 |
|
|
|
| 3008 |
|
|
if (h != NULL)
|
| 3009 |
|
|
{
|
| 3010 |
|
|
*root_plt = &h->root.plt;
|
| 3011 |
|
|
*arm_plt = &h->plt;
|
| 3012 |
|
|
return TRUE;
|
| 3013 |
|
|
}
|
| 3014 |
|
|
|
| 3015 |
|
|
if (elf32_arm_local_iplt (abfd) == NULL)
|
| 3016 |
|
|
return FALSE;
|
| 3017 |
|
|
|
| 3018 |
|
|
local_iplt = elf32_arm_local_iplt (abfd)[r_symndx];
|
| 3019 |
|
|
if (local_iplt == NULL)
|
| 3020 |
|
|
return FALSE;
|
| 3021 |
|
|
|
| 3022 |
|
|
*root_plt = &local_iplt->root;
|
| 3023 |
|
|
*arm_plt = &local_iplt->arm;
|
| 3024 |
|
|
return TRUE;
|
| 3025 |
|
|
}
|
| 3026 |
|
|
|
| 3027 |
|
|
/* Return true if the PLT described by ARM_PLT requires a Thumb stub
|
| 3028 |
|
|
before it. */
|
| 3029 |
|
|
|
| 3030 |
|
|
static bfd_boolean
|
| 3031 |
|
|
elf32_arm_plt_needs_thumb_stub_p (struct bfd_link_info *info,
|
| 3032 |
|
|
struct arm_plt_info *arm_plt)
|
| 3033 |
|
|
{
|
| 3034 |
|
|
struct elf32_arm_link_hash_table *htab;
|
| 3035 |
|
|
|
| 3036 |
|
|
htab = elf32_arm_hash_table (info);
|
| 3037 |
|
|
return (arm_plt->thumb_refcount != 0
|
| 3038 |
|
|
|| (!htab->use_blx && arm_plt->maybe_thumb_refcount != 0));
|
| 3039 |
|
|
}
|
| 3040 |
|
|
|
| 3041 |
|
|
/* Return a pointer to the head of the dynamic reloc list that should
|
| 3042 |
|
|
be used for local symbol ISYM, which is symbol number R_SYMNDX in
|
| 3043 |
|
|
ABFD's symbol table. Return null if an error occurs. */
|
| 3044 |
|
|
|
| 3045 |
|
|
static struct elf_dyn_relocs **
|
| 3046 |
|
|
elf32_arm_get_local_dynreloc_list (bfd *abfd, unsigned long r_symndx,
|
| 3047 |
|
|
Elf_Internal_Sym *isym)
|
| 3048 |
|
|
{
|
| 3049 |
|
|
if (ELF32_ST_TYPE (isym->st_info) == STT_GNU_IFUNC)
|
| 3050 |
|
|
{
|
| 3051 |
|
|
struct arm_local_iplt_info *local_iplt;
|
| 3052 |
|
|
|
| 3053 |
|
|
local_iplt = elf32_arm_create_local_iplt (abfd, r_symndx);
|
| 3054 |
|
|
if (local_iplt == NULL)
|
| 3055 |
|
|
return NULL;
|
| 3056 |
|
|
return &local_iplt->dyn_relocs;
|
| 3057 |
|
|
}
|
| 3058 |
|
|
else
|
| 3059 |
|
|
{
|
| 3060 |
|
|
/* Track dynamic relocs needed for local syms too.
|
| 3061 |
|
|
We really need local syms available to do this
|
| 3062 |
|
|
easily. Oh well. */
|
| 3063 |
|
|
asection *s;
|
| 3064 |
|
|
void *vpp;
|
| 3065 |
|
|
|
| 3066 |
|
|
s = bfd_section_from_elf_index (abfd, isym->st_shndx);
|
| 3067 |
|
|
if (s == NULL)
|
| 3068 |
|
|
abort ();
|
| 3069 |
|
|
|
| 3070 |
|
|
vpp = &elf_section_data (s)->local_dynrel;
|
| 3071 |
|
|
return (struct elf_dyn_relocs **) vpp;
|
| 3072 |
|
|
}
|
| 3073 |
|
|
}
|
| 3074 |
|
|
|
| 3075 |
|
|
/* Initialize an entry in the stub hash table. */
|
| 3076 |
|
|
|
| 3077 |
|
|
static struct bfd_hash_entry *
|
| 3078 |
|
|
stub_hash_newfunc (struct bfd_hash_entry *entry,
|
| 3079 |
|
|
struct bfd_hash_table *table,
|
| 3080 |
|
|
const char *string)
|
| 3081 |
|
|
{
|
| 3082 |
|
|
/* Allocate the structure if it has not already been allocated by a
|
| 3083 |
|
|
subclass. */
|
| 3084 |
|
|
if (entry == NULL)
|
| 3085 |
|
|
{
|
| 3086 |
|
|
entry = (struct bfd_hash_entry *)
|
| 3087 |
|
|
bfd_hash_allocate (table, sizeof (struct elf32_arm_stub_hash_entry));
|
| 3088 |
|
|
if (entry == NULL)
|
| 3089 |
|
|
return entry;
|
| 3090 |
|
|
}
|
| 3091 |
|
|
|
| 3092 |
|
|
/* Call the allocation method of the superclass. */
|
| 3093 |
|
|
entry = bfd_hash_newfunc (entry, table, string);
|
| 3094 |
|
|
if (entry != NULL)
|
| 3095 |
|
|
{
|
| 3096 |
|
|
struct elf32_arm_stub_hash_entry *eh;
|
| 3097 |
|
|
|
| 3098 |
|
|
/* Initialize the local fields. */
|
| 3099 |
|
|
eh = (struct elf32_arm_stub_hash_entry *) entry;
|
| 3100 |
|
|
eh->stub_sec = NULL;
|
| 3101 |
|
|
eh->stub_offset = 0;
|
| 3102 |
|
|
eh->target_value = 0;
|
| 3103 |
|
|
eh->target_section = NULL;
|
| 3104 |
|
|
eh->target_addend = 0;
|
| 3105 |
|
|
eh->orig_insn = 0;
|
| 3106 |
|
|
eh->stub_type = arm_stub_none;
|
| 3107 |
|
|
eh->stub_size = 0;
|
| 3108 |
|
|
eh->stub_template = NULL;
|
| 3109 |
|
|
eh->stub_template_size = 0;
|
| 3110 |
|
|
eh->h = NULL;
|
| 3111 |
|
|
eh->id_sec = NULL;
|
| 3112 |
|
|
eh->output_name = NULL;
|
| 3113 |
|
|
}
|
| 3114 |
|
|
|
| 3115 |
|
|
return entry;
|
| 3116 |
|
|
}
|
| 3117 |
|
|
|
| 3118 |
|
|
/* Create .got, .gotplt, and .rel(a).got sections in DYNOBJ, and set up
|
| 3119 |
|
|
shortcuts to them in our hash table. */
|
| 3120 |
|
|
|
| 3121 |
|
|
static bfd_boolean
|
| 3122 |
|
|
create_got_section (bfd *dynobj, struct bfd_link_info *info)
|
| 3123 |
|
|
{
|
| 3124 |
|
|
struct elf32_arm_link_hash_table *htab;
|
| 3125 |
|
|
|
| 3126 |
|
|
htab = elf32_arm_hash_table (info);
|
| 3127 |
|
|
if (htab == NULL)
|
| 3128 |
|
|
return FALSE;
|
| 3129 |
|
|
|
| 3130 |
|
|
/* BPABI objects never have a GOT, or associated sections. */
|
| 3131 |
|
|
if (htab->symbian_p)
|
| 3132 |
|
|
return TRUE;
|
| 3133 |
|
|
|
| 3134 |
|
|
if (! _bfd_elf_create_got_section (dynobj, info))
|
| 3135 |
|
|
return FALSE;
|
| 3136 |
|
|
|
| 3137 |
|
|
return TRUE;
|
| 3138 |
|
|
}
|
| 3139 |
|
|
|
| 3140 |
|
|
/* Create the .iplt, .rel(a).iplt and .igot.plt sections. */
|
| 3141 |
|
|
|
| 3142 |
|
|
static bfd_boolean
|
| 3143 |
|
|
create_ifunc_sections (struct bfd_link_info *info)
|
| 3144 |
|
|
{
|
| 3145 |
|
|
struct elf32_arm_link_hash_table *htab;
|
| 3146 |
|
|
const struct elf_backend_data *bed;
|
| 3147 |
|
|
bfd *dynobj;
|
| 3148 |
|
|
asection *s;
|
| 3149 |
|
|
flagword flags;
|
| 3150 |
|
|
|
| 3151 |
|
|
htab = elf32_arm_hash_table (info);
|
| 3152 |
|
|
dynobj = htab->root.dynobj;
|
| 3153 |
|
|
bed = get_elf_backend_data (dynobj);
|
| 3154 |
|
|
flags = bed->dynamic_sec_flags;
|
| 3155 |
|
|
|
| 3156 |
|
|
if (htab->root.iplt == NULL)
|
| 3157 |
|
|
{
|
| 3158 |
|
|
s = bfd_make_section_with_flags (dynobj, ".iplt",
|
| 3159 |
|
|
flags | SEC_READONLY | SEC_CODE);
|
| 3160 |
|
|
if (s == NULL
|
| 3161 |
|
|
|| !bfd_set_section_alignment (abfd, s, bed->plt_alignment))
|
| 3162 |
|
|
return FALSE;
|
| 3163 |
|
|
htab->root.iplt = s;
|
| 3164 |
|
|
}
|
| 3165 |
|
|
|
| 3166 |
|
|
if (htab->root.irelplt == NULL)
|
| 3167 |
|
|
{
|
| 3168 |
|
|
s = bfd_make_section_with_flags (dynobj, RELOC_SECTION (htab, ".iplt"),
|
| 3169 |
|
|
flags | SEC_READONLY);
|
| 3170 |
|
|
if (s == NULL
|
| 3171 |
|
|
|| !bfd_set_section_alignment (abfd, s, bed->s->log_file_align))
|
| 3172 |
|
|
return FALSE;
|
| 3173 |
|
|
htab->root.irelplt = s;
|
| 3174 |
|
|
}
|
| 3175 |
|
|
|
| 3176 |
|
|
if (htab->root.igotplt == NULL)
|
| 3177 |
|
|
{
|
| 3178 |
|
|
s = bfd_make_section_with_flags (dynobj, ".igot.plt", flags);
|
| 3179 |
|
|
if (s == NULL
|
| 3180 |
|
|
|| !bfd_set_section_alignment (dynobj, s, bed->s->log_file_align))
|
| 3181 |
|
|
return FALSE;
|
| 3182 |
|
|
htab->root.igotplt = s;
|
| 3183 |
|
|
}
|
| 3184 |
|
|
return TRUE;
|
| 3185 |
|
|
}
|
| 3186 |
|
|
|
| 3187 |
|
|
/* Create .plt, .rel(a).plt, .got, .got.plt, .rel(a).got, .dynbss, and
|
| 3188 |
|
|
.rel(a).bss sections in DYNOBJ, and set up shortcuts to them in our
|
| 3189 |
|
|
hash table. */
|
| 3190 |
|
|
|
| 3191 |
|
|
static bfd_boolean
|
| 3192 |
|
|
elf32_arm_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
|
| 3193 |
|
|
{
|
| 3194 |
|
|
struct elf32_arm_link_hash_table *htab;
|
| 3195 |
|
|
|
| 3196 |
|
|
htab = elf32_arm_hash_table (info);
|
| 3197 |
|
|
if (htab == NULL)
|
| 3198 |
|
|
return FALSE;
|
| 3199 |
|
|
|
| 3200 |
|
|
if (!htab->root.sgot && !create_got_section (dynobj, info))
|
| 3201 |
|
|
return FALSE;
|
| 3202 |
|
|
|
| 3203 |
|
|
if (!_bfd_elf_create_dynamic_sections (dynobj, info))
|
| 3204 |
|
|
return FALSE;
|
| 3205 |
|
|
|
| 3206 |
|
|
htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss");
|
| 3207 |
|
|
if (!info->shared)
|
| 3208 |
|
|
htab->srelbss = bfd_get_section_by_name (dynobj,
|
| 3209 |
|
|
RELOC_SECTION (htab, ".bss"));
|
| 3210 |
|
|
|
| 3211 |
|
|
if (htab->vxworks_p)
|
| 3212 |
|
|
{
|
| 3213 |
|
|
if (!elf_vxworks_create_dynamic_sections (dynobj, info, &htab->srelplt2))
|
| 3214 |
|
|
return FALSE;
|
| 3215 |
|
|
|
| 3216 |
|
|
if (info->shared)
|
| 3217 |
|
|
{
|
| 3218 |
|
|
htab->plt_header_size = 0;
|
| 3219 |
|
|
htab->plt_entry_size
|
| 3220 |
|
|
= 4 * ARRAY_SIZE (elf32_arm_vxworks_shared_plt_entry);
|
| 3221 |
|
|
}
|
| 3222 |
|
|
else
|
| 3223 |
|
|
{
|
| 3224 |
|
|
htab->plt_header_size
|
| 3225 |
|
|
= 4 * ARRAY_SIZE (elf32_arm_vxworks_exec_plt0_entry);
|
| 3226 |
|
|
htab->plt_entry_size
|
| 3227 |
|
|
= 4 * ARRAY_SIZE (elf32_arm_vxworks_exec_plt_entry);
|
| 3228 |
|
|
}
|
| 3229 |
|
|
}
|
| 3230 |
|
|
|
| 3231 |
|
|
if (!htab->root.splt
|
| 3232 |
|
|
|| !htab->root.srelplt
|
| 3233 |
|
|
|| !htab->sdynbss
|
| 3234 |
|
|
|| (!info->shared && !htab->srelbss))
|
| 3235 |
|
|
abort ();
|
| 3236 |
|
|
|
| 3237 |
|
|
return TRUE;
|
| 3238 |
|
|
}
|
| 3239 |
|
|
|
| 3240 |
|
|
/* Copy the extra info we tack onto an elf_link_hash_entry. */
|
| 3241 |
|
|
|
| 3242 |
|
|
static void
|
| 3243 |
|
|
elf32_arm_copy_indirect_symbol (struct bfd_link_info *info,
|
| 3244 |
|
|
struct elf_link_hash_entry *dir,
|
| 3245 |
|
|
struct elf_link_hash_entry *ind)
|
| 3246 |
|
|
{
|
| 3247 |
|
|
struct elf32_arm_link_hash_entry *edir, *eind;
|
| 3248 |
|
|
|
| 3249 |
|
|
edir = (struct elf32_arm_link_hash_entry *) dir;
|
| 3250 |
|
|
eind = (struct elf32_arm_link_hash_entry *) ind;
|
| 3251 |
|
|
|
| 3252 |
|
|
if (eind->dyn_relocs != NULL)
|
| 3253 |
|
|
{
|
| 3254 |
|
|
if (edir->dyn_relocs != NULL)
|
| 3255 |
|
|
{
|
| 3256 |
|
|
struct elf_dyn_relocs **pp;
|
| 3257 |
|
|
struct elf_dyn_relocs *p;
|
| 3258 |
|
|
|
| 3259 |
|
|
/* Add reloc counts against the indirect sym to the direct sym
|
| 3260 |
|
|
list. Merge any entries against the same section. */
|
| 3261 |
|
|
for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
|
| 3262 |
|
|
{
|
| 3263 |
|
|
struct elf_dyn_relocs *q;
|
| 3264 |
|
|
|
| 3265 |
|
|
for (q = edir->dyn_relocs; q != NULL; q = q->next)
|
| 3266 |
|
|
if (q->sec == p->sec)
|
| 3267 |
|
|
{
|
| 3268 |
|
|
q->pc_count += p->pc_count;
|
| 3269 |
|
|
q->count += p->count;
|
| 3270 |
|
|
*pp = p->next;
|
| 3271 |
|
|
break;
|
| 3272 |
|
|
}
|
| 3273 |
|
|
if (q == NULL)
|
| 3274 |
|
|
pp = &p->next;
|
| 3275 |
|
|
}
|
| 3276 |
|
|
*pp = edir->dyn_relocs;
|
| 3277 |
|
|
}
|
| 3278 |
|
|
|
| 3279 |
|
|
edir->dyn_relocs = eind->dyn_relocs;
|
| 3280 |
|
|
eind->dyn_relocs = NULL;
|
| 3281 |
|
|
}
|
| 3282 |
|
|
|
| 3283 |
|
|
if (ind->root.type == bfd_link_hash_indirect)
|
| 3284 |
|
|
{
|
| 3285 |
|
|
/* Copy over PLT info. */
|
| 3286 |
|
|
edir->plt.thumb_refcount += eind->plt.thumb_refcount;
|
| 3287 |
|
|
eind->plt.thumb_refcount = 0;
|
| 3288 |
|
|
edir->plt.maybe_thumb_refcount += eind->plt.maybe_thumb_refcount;
|
| 3289 |
|
|
eind->plt.maybe_thumb_refcount = 0;
|
| 3290 |
|
|
edir->plt.noncall_refcount += eind->plt.noncall_refcount;
|
| 3291 |
|
|
eind->plt.noncall_refcount = 0;
|
| 3292 |
|
|
|
| 3293 |
|
|
/* We should only allocate a function to .iplt once the final
|
| 3294 |
|
|
symbol information is known. */
|
| 3295 |
|
|
BFD_ASSERT (!eind->is_iplt);
|
| 3296 |
|
|
|
| 3297 |
|
|
if (dir->got.refcount <= 0)
|
| 3298 |
|
|
{
|
| 3299 |
|
|
edir->tls_type = eind->tls_type;
|
| 3300 |
|
|
eind->tls_type = GOT_UNKNOWN;
|
| 3301 |
|
|
}
|
| 3302 |
|
|
}
|
| 3303 |
|
|
|
| 3304 |
|
|
_bfd_elf_link_hash_copy_indirect (info, dir, ind);
|
| 3305 |
|
|
}
|
| 3306 |
|
|
|
| 3307 |
|
|
/* Create an ARM elf linker hash table. */
|
| 3308 |
|
|
|
| 3309 |
|
|
static struct bfd_link_hash_table *
|
| 3310 |
|
|
elf32_arm_link_hash_table_create (bfd *abfd)
|
| 3311 |
|
|
{
|
| 3312 |
|
|
struct elf32_arm_link_hash_table *ret;
|
| 3313 |
|
|
bfd_size_type amt = sizeof (struct elf32_arm_link_hash_table);
|
| 3314 |
|
|
|
| 3315 |
|
|
ret = (struct elf32_arm_link_hash_table *) bfd_malloc (amt);
|
| 3316 |
|
|
if (ret == NULL)
|
| 3317 |
|
|
return NULL;
|
| 3318 |
|
|
|
| 3319 |
|
|
if (!_bfd_elf_link_hash_table_init (& ret->root, abfd,
|
| 3320 |
|
|
elf32_arm_link_hash_newfunc,
|
| 3321 |
|
|
sizeof (struct elf32_arm_link_hash_entry),
|
| 3322 |
|
|
ARM_ELF_DATA))
|
| 3323 |
|
|
{
|
| 3324 |
|
|
free (ret);
|
| 3325 |
|
|
return NULL;
|
| 3326 |
|
|
}
|
| 3327 |
|
|
|
| 3328 |
|
|
ret->sdynbss = NULL;
|
| 3329 |
|
|
ret->srelbss = NULL;
|
| 3330 |
|
|
ret->srelplt2 = NULL;
|
| 3331 |
|
|
ret->dt_tlsdesc_plt = 0;
|
| 3332 |
|
|
ret->dt_tlsdesc_got = 0;
|
| 3333 |
|
|
ret->tls_trampoline = 0;
|
| 3334 |
|
|
ret->next_tls_desc_index = 0;
|
| 3335 |
|
|
ret->num_tls_desc = 0;
|
| 3336 |
|
|
ret->thumb_glue_size = 0;
|
| 3337 |
|
|
ret->arm_glue_size = 0;
|
| 3338 |
|
|
ret->bx_glue_size = 0;
|
| 3339 |
|
|
memset (ret->bx_glue_offset, 0, sizeof (ret->bx_glue_offset));
|
| 3340 |
|
|
ret->vfp11_fix = BFD_ARM_VFP11_FIX_NONE;
|
| 3341 |
|
|
ret->vfp11_erratum_glue_size = 0;
|
| 3342 |
|
|
ret->num_vfp11_fixes = 0;
|
| 3343 |
|
|
ret->fix_cortex_a8 = 0;
|
| 3344 |
161 |
khays |
ret->fix_arm1176 = 0;
|
| 3345 |
14 |
khays |
ret->bfd_of_glue_owner = NULL;
|
| 3346 |
|
|
ret->byteswap_code = 0;
|
| 3347 |
|
|
ret->target1_is_rel = 0;
|
| 3348 |
|
|
ret->target2_reloc = R_ARM_NONE;
|
| 3349 |
|
|
#ifdef FOUR_WORD_PLT
|
| 3350 |
|
|
ret->plt_header_size = 16;
|
| 3351 |
|
|
ret->plt_entry_size = 16;
|
| 3352 |
|
|
#else
|
| 3353 |
|
|
ret->plt_header_size = 20;
|
| 3354 |
|
|
ret->plt_entry_size = 12;
|
| 3355 |
|
|
#endif
|
| 3356 |
|
|
ret->fix_v4bx = 0;
|
| 3357 |
|
|
ret->use_blx = 0;
|
| 3358 |
|
|
ret->vxworks_p = 0;
|
| 3359 |
|
|
ret->symbian_p = 0;
|
| 3360 |
|
|
ret->use_rel = 1;
|
| 3361 |
|
|
ret->sym_cache.abfd = NULL;
|
| 3362 |
|
|
ret->obfd = abfd;
|
| 3363 |
|
|
ret->tls_ldm_got.refcount = 0;
|
| 3364 |
|
|
ret->stub_bfd = NULL;
|
| 3365 |
|
|
ret->add_stub_section = NULL;
|
| 3366 |
|
|
ret->layout_sections_again = NULL;
|
| 3367 |
|
|
ret->stub_group = NULL;
|
| 3368 |
|
|
ret->top_id = 0;
|
| 3369 |
|
|
ret->bfd_count = 0;
|
| 3370 |
|
|
ret->top_index = 0;
|
| 3371 |
|
|
ret->input_list = NULL;
|
| 3372 |
|
|
|
| 3373 |
|
|
if (!bfd_hash_table_init (&ret->stub_hash_table, stub_hash_newfunc,
|
| 3374 |
|
|
sizeof (struct elf32_arm_stub_hash_entry)))
|
| 3375 |
|
|
{
|
| 3376 |
|
|
free (ret);
|
| 3377 |
|
|
return NULL;
|
| 3378 |
|
|
}
|
| 3379 |
|
|
|
| 3380 |
|
|
return &ret->root.root;
|
| 3381 |
|
|
}
|
| 3382 |
|
|
|
| 3383 |
|
|
/* Free the derived linker hash table. */
|
| 3384 |
|
|
|
| 3385 |
|
|
static void
|
| 3386 |
|
|
elf32_arm_hash_table_free (struct bfd_link_hash_table *hash)
|
| 3387 |
|
|
{
|
| 3388 |
|
|
struct elf32_arm_link_hash_table *ret
|
| 3389 |
|
|
= (struct elf32_arm_link_hash_table *) hash;
|
| 3390 |
|
|
|
| 3391 |
|
|
bfd_hash_table_free (&ret->stub_hash_table);
|
| 3392 |
|
|
_bfd_generic_link_hash_table_free (hash);
|
| 3393 |
|
|
}
|
| 3394 |
|
|
|
| 3395 |
|
|
/* Determine if we're dealing with a Thumb only architecture. */
|
| 3396 |
|
|
|
| 3397 |
|
|
static bfd_boolean
|
| 3398 |
|
|
using_thumb_only (struct elf32_arm_link_hash_table *globals)
|
| 3399 |
|
|
{
|
| 3400 |
|
|
int arch = bfd_elf_get_obj_attr_int (globals->obfd, OBJ_ATTR_PROC,
|
| 3401 |
|
|
Tag_CPU_arch);
|
| 3402 |
|
|
int profile;
|
| 3403 |
|
|
|
| 3404 |
|
|
if (arch == TAG_CPU_ARCH_V6_M || arch == TAG_CPU_ARCH_V6S_M)
|
| 3405 |
|
|
return TRUE;
|
| 3406 |
|
|
|
| 3407 |
|
|
if (arch != TAG_CPU_ARCH_V7 && arch != TAG_CPU_ARCH_V7E_M)
|
| 3408 |
|
|
return FALSE;
|
| 3409 |
|
|
|
| 3410 |
|
|
profile = bfd_elf_get_obj_attr_int (globals->obfd, OBJ_ATTR_PROC,
|
| 3411 |
|
|
Tag_CPU_arch_profile);
|
| 3412 |
|
|
|
| 3413 |
|
|
return profile == 'M';
|
| 3414 |
|
|
}
|
| 3415 |
|
|
|
| 3416 |
|
|
/* Determine if we're dealing with a Thumb-2 object. */
|
| 3417 |
|
|
|
| 3418 |
|
|
static bfd_boolean
|
| 3419 |
|
|
using_thumb2 (struct elf32_arm_link_hash_table *globals)
|
| 3420 |
|
|
{
|
| 3421 |
|
|
int arch = bfd_elf_get_obj_attr_int (globals->obfd, OBJ_ATTR_PROC,
|
| 3422 |
|
|
Tag_CPU_arch);
|
| 3423 |
|
|
return arch == TAG_CPU_ARCH_V6T2 || arch >= TAG_CPU_ARCH_V7;
|
| 3424 |
|
|
}
|
| 3425 |
|
|
|
| 3426 |
|
|
/* Determine what kind of NOPs are available. */
|
| 3427 |
|
|
|
| 3428 |
|
|
static bfd_boolean
|
| 3429 |
|
|
arch_has_arm_nop (struct elf32_arm_link_hash_table *globals)
|
| 3430 |
|
|
{
|
| 3431 |
|
|
const int arch = bfd_elf_get_obj_attr_int (globals->obfd, OBJ_ATTR_PROC,
|
| 3432 |
|
|
Tag_CPU_arch);
|
| 3433 |
|
|
return arch == TAG_CPU_ARCH_V6T2
|
| 3434 |
|
|
|| arch == TAG_CPU_ARCH_V6K
|
| 3435 |
|
|
|| arch == TAG_CPU_ARCH_V7
|
| 3436 |
|
|
|| arch == TAG_CPU_ARCH_V7E_M;
|
| 3437 |
|
|
}
|
| 3438 |
|
|
|
| 3439 |
|
|
static bfd_boolean
|
| 3440 |
|
|
arch_has_thumb2_nop (struct elf32_arm_link_hash_table *globals)
|
| 3441 |
|
|
{
|
| 3442 |
|
|
const int arch = bfd_elf_get_obj_attr_int (globals->obfd, OBJ_ATTR_PROC,
|
| 3443 |
|
|
Tag_CPU_arch);
|
| 3444 |
|
|
return (arch == TAG_CPU_ARCH_V6T2 || arch == TAG_CPU_ARCH_V7
|
| 3445 |
|
|
|| arch == TAG_CPU_ARCH_V7E_M);
|
| 3446 |
|
|
}
|
| 3447 |
|
|
|
| 3448 |
|
|
static bfd_boolean
|
| 3449 |
|
|
arm_stub_is_thumb (enum elf32_arm_stub_type stub_type)
|
| 3450 |
|
|
{
|
| 3451 |
|
|
switch (stub_type)
|
| 3452 |
|
|
{
|
| 3453 |
|
|
case arm_stub_long_branch_thumb_only:
|
| 3454 |
|
|
case arm_stub_long_branch_v4t_thumb_arm:
|
| 3455 |
|
|
case arm_stub_short_branch_v4t_thumb_arm:
|
| 3456 |
|
|
case arm_stub_long_branch_v4t_thumb_arm_pic:
|
| 3457 |
|
|
case arm_stub_long_branch_v4t_thumb_tls_pic:
|
| 3458 |
|
|
case arm_stub_long_branch_thumb_only_pic:
|
| 3459 |
|
|
return TRUE;
|
| 3460 |
|
|
case arm_stub_none:
|
| 3461 |
|
|
BFD_FAIL ();
|
| 3462 |
|
|
return FALSE;
|
| 3463 |
|
|
break;
|
| 3464 |
|
|
default:
|
| 3465 |
|
|
return FALSE;
|
| 3466 |
|
|
}
|
| 3467 |
|
|
}
|
| 3468 |
|
|
|
| 3469 |
|
|
/* Determine the type of stub needed, if any, for a call. */
|
| 3470 |
|
|
|
| 3471 |
|
|
static enum elf32_arm_stub_type
|
| 3472 |
|
|
arm_type_of_stub (struct bfd_link_info *info,
|
| 3473 |
|
|
asection *input_sec,
|
| 3474 |
|
|
const Elf_Internal_Rela *rel,
|
| 3475 |
|
|
unsigned char st_type,
|
| 3476 |
|
|
enum arm_st_branch_type *actual_branch_type,
|
| 3477 |
|
|
struct elf32_arm_link_hash_entry *hash,
|
| 3478 |
|
|
bfd_vma destination,
|
| 3479 |
|
|
asection *sym_sec,
|
| 3480 |
|
|
bfd *input_bfd,
|
| 3481 |
|
|
const char *name)
|
| 3482 |
|
|
{
|
| 3483 |
|
|
bfd_vma location;
|
| 3484 |
|
|
bfd_signed_vma branch_offset;
|
| 3485 |
|
|
unsigned int r_type;
|
| 3486 |
|
|
struct elf32_arm_link_hash_table * globals;
|
| 3487 |
|
|
int thumb2;
|
| 3488 |
|
|
int thumb_only;
|
| 3489 |
|
|
enum elf32_arm_stub_type stub_type = arm_stub_none;
|
| 3490 |
|
|
int use_plt = 0;
|
| 3491 |
|
|
enum arm_st_branch_type branch_type = *actual_branch_type;
|
| 3492 |
|
|
union gotplt_union *root_plt;
|
| 3493 |
|
|
struct arm_plt_info *arm_plt;
|
| 3494 |
|
|
|
| 3495 |
|
|
if (branch_type == ST_BRANCH_LONG)
|
| 3496 |
|
|
return stub_type;
|
| 3497 |
|
|
|
| 3498 |
|
|
globals = elf32_arm_hash_table (info);
|
| 3499 |
|
|
if (globals == NULL)
|
| 3500 |
|
|
return stub_type;
|
| 3501 |
|
|
|
| 3502 |
|
|
thumb_only = using_thumb_only (globals);
|
| 3503 |
|
|
|
| 3504 |
|
|
thumb2 = using_thumb2 (globals);
|
| 3505 |
|
|
|
| 3506 |
|
|
/* Determine where the call point is. */
|
| 3507 |
|
|
location = (input_sec->output_offset
|
| 3508 |
|
|
+ input_sec->output_section->vma
|
| 3509 |
|
|
+ rel->r_offset);
|
| 3510 |
|
|
|
| 3511 |
|
|
r_type = ELF32_R_TYPE (rel->r_info);
|
| 3512 |
|
|
|
| 3513 |
|
|
/* For TLS call relocs, it is the caller's responsibility to provide
|
| 3514 |
|
|
the address of the appropriate trampoline. */
|
| 3515 |
|
|
if (r_type != R_ARM_TLS_CALL
|
| 3516 |
|
|
&& r_type != R_ARM_THM_TLS_CALL
|
| 3517 |
|
|
&& elf32_arm_get_plt_info (input_bfd, hash, ELF32_R_SYM (rel->r_info),
|
| 3518 |
|
|
&root_plt, &arm_plt)
|
| 3519 |
|
|
&& root_plt->offset != (bfd_vma) -1)
|
| 3520 |
|
|
{
|
| 3521 |
|
|
asection *splt;
|
| 3522 |
|
|
|
| 3523 |
|
|
if (hash == NULL || hash->is_iplt)
|
| 3524 |
|
|
splt = globals->root.iplt;
|
| 3525 |
|
|
else
|
| 3526 |
|
|
splt = globals->root.splt;
|
| 3527 |
|
|
if (splt != NULL)
|
| 3528 |
|
|
{
|
| 3529 |
|
|
use_plt = 1;
|
| 3530 |
|
|
|
| 3531 |
|
|
/* Note when dealing with PLT entries: the main PLT stub is in
|
| 3532 |
|
|
ARM mode, so if the branch is in Thumb mode, another
|
| 3533 |
|
|
Thumb->ARM stub will be inserted later just before the ARM
|
| 3534 |
|
|
PLT stub. We don't take this extra distance into account
|
| 3535 |
|
|
here, because if a long branch stub is needed, we'll add a
|
| 3536 |
|
|
Thumb->Arm one and branch directly to the ARM PLT entry
|
| 3537 |
|
|
because it avoids spreading offset corrections in several
|
| 3538 |
|
|
places. */
|
| 3539 |
|
|
|
| 3540 |
|
|
destination = (splt->output_section->vma
|
| 3541 |
|
|
+ splt->output_offset
|
| 3542 |
|
|
+ root_plt->offset);
|
| 3543 |
|
|
st_type = STT_FUNC;
|
| 3544 |
|
|
branch_type = ST_BRANCH_TO_ARM;
|
| 3545 |
|
|
}
|
| 3546 |
|
|
}
|
| 3547 |
|
|
/* Calls to STT_GNU_IFUNC symbols should go through a PLT. */
|
| 3548 |
|
|
BFD_ASSERT (st_type != STT_GNU_IFUNC);
|
| 3549 |
|
|
|
| 3550 |
|
|
branch_offset = (bfd_signed_vma)(destination - location);
|
| 3551 |
|
|
|
| 3552 |
|
|
if (r_type == R_ARM_THM_CALL || r_type == R_ARM_THM_JUMP24
|
| 3553 |
|
|
|| r_type == R_ARM_THM_TLS_CALL)
|
| 3554 |
|
|
{
|
| 3555 |
|
|
/* Handle cases where:
|
| 3556 |
|
|
- this call goes too far (different Thumb/Thumb2 max
|
| 3557 |
|
|
distance)
|
| 3558 |
|
|
- it's a Thumb->Arm call and blx is not available, or it's a
|
| 3559 |
|
|
Thumb->Arm branch (not bl). A stub is needed in this case,
|
| 3560 |
|
|
but only if this call is not through a PLT entry. Indeed,
|
| 3561 |
|
|
PLT stubs handle mode switching already.
|
| 3562 |
|
|
*/
|
| 3563 |
|
|
if ((!thumb2
|
| 3564 |
|
|
&& (branch_offset > THM_MAX_FWD_BRANCH_OFFSET
|
| 3565 |
|
|
|| (branch_offset < THM_MAX_BWD_BRANCH_OFFSET)))
|
| 3566 |
|
|
|| (thumb2
|
| 3567 |
|
|
&& (branch_offset > THM2_MAX_FWD_BRANCH_OFFSET
|
| 3568 |
|
|
|| (branch_offset < THM2_MAX_BWD_BRANCH_OFFSET)))
|
| 3569 |
|
|
|| (branch_type == ST_BRANCH_TO_ARM
|
| 3570 |
|
|
&& (((r_type == R_ARM_THM_CALL
|
| 3571 |
|
|
|| r_type == R_ARM_THM_TLS_CALL) && !globals->use_blx)
|
| 3572 |
|
|
|| (r_type == R_ARM_THM_JUMP24))
|
| 3573 |
|
|
&& !use_plt))
|
| 3574 |
|
|
{
|
| 3575 |
|
|
if (branch_type == ST_BRANCH_TO_THUMB)
|
| 3576 |
|
|
{
|
| 3577 |
|
|
/* Thumb to thumb. */
|
| 3578 |
|
|
if (!thumb_only)
|
| 3579 |
|
|
{
|
| 3580 |
|
|
stub_type = (info->shared | globals->pic_veneer)
|
| 3581 |
|
|
/* PIC stubs. */
|
| 3582 |
|
|
? ((globals->use_blx
|
| 3583 |
163 |
khays |
&& (r_type == R_ARM_THM_CALL))
|
| 3584 |
14 |
khays |
/* V5T and above. Stub starts with ARM code, so
|
| 3585 |
|
|
we must be able to switch mode before
|
| 3586 |
|
|
reaching it, which is only possible for 'bl'
|
| 3587 |
|
|
(ie R_ARM_THM_CALL relocation). */
|
| 3588 |
|
|
? arm_stub_long_branch_any_thumb_pic
|
| 3589 |
|
|
/* On V4T, use Thumb code only. */
|
| 3590 |
|
|
: arm_stub_long_branch_v4t_thumb_thumb_pic)
|
| 3591 |
|
|
|
| 3592 |
|
|
/* non-PIC stubs. */
|
| 3593 |
|
|
: ((globals->use_blx
|
| 3594 |
163 |
khays |
&& (r_type == R_ARM_THM_CALL))
|
| 3595 |
14 |
khays |
/* V5T and above. */
|
| 3596 |
|
|
? arm_stub_long_branch_any_any
|
| 3597 |
|
|
/* V4T. */
|
| 3598 |
|
|
: arm_stub_long_branch_v4t_thumb_thumb);
|
| 3599 |
|
|
}
|
| 3600 |
|
|
else
|
| 3601 |
|
|
{
|
| 3602 |
|
|
stub_type = (info->shared | globals->pic_veneer)
|
| 3603 |
|
|
/* PIC stub. */
|
| 3604 |
|
|
? arm_stub_long_branch_thumb_only_pic
|
| 3605 |
|
|
/* non-PIC stub. */
|
| 3606 |
|
|
: arm_stub_long_branch_thumb_only;
|
| 3607 |
|
|
}
|
| 3608 |
|
|
}
|
| 3609 |
|
|
else
|
| 3610 |
|
|
{
|
| 3611 |
|
|
/* Thumb to arm. */
|
| 3612 |
|
|
if (sym_sec != NULL
|
| 3613 |
|
|
&& sym_sec->owner != NULL
|
| 3614 |
|
|
&& !INTERWORK_FLAG (sym_sec->owner))
|
| 3615 |
|
|
{
|
| 3616 |
|
|
(*_bfd_error_handler)
|
| 3617 |
|
|
(_("%B(%s): warning: interworking not enabled.\n"
|
| 3618 |
|
|
" first occurrence: %B: Thumb call to ARM"),
|
| 3619 |
|
|
sym_sec->owner, input_bfd, name);
|
| 3620 |
|
|
}
|
| 3621 |
|
|
|
| 3622 |
|
|
stub_type =
|
| 3623 |
|
|
(info->shared | globals->pic_veneer)
|
| 3624 |
|
|
/* PIC stubs. */
|
| 3625 |
|
|
? (r_type == R_ARM_THM_TLS_CALL
|
| 3626 |
|
|
/* TLS PIC stubs */
|
| 3627 |
|
|
? (globals->use_blx ? arm_stub_long_branch_any_tls_pic
|
| 3628 |
|
|
: arm_stub_long_branch_v4t_thumb_tls_pic)
|
| 3629 |
|
|
: ((globals->use_blx && r_type == R_ARM_THM_CALL)
|
| 3630 |
|
|
/* V5T PIC and above. */
|
| 3631 |
|
|
? arm_stub_long_branch_any_arm_pic
|
| 3632 |
|
|
/* V4T PIC stub. */
|
| 3633 |
|
|
: arm_stub_long_branch_v4t_thumb_arm_pic))
|
| 3634 |
|
|
|
| 3635 |
|
|
/* non-PIC stubs. */
|
| 3636 |
|
|
: ((globals->use_blx && r_type == R_ARM_THM_CALL)
|
| 3637 |
|
|
/* V5T and above. */
|
| 3638 |
|
|
? arm_stub_long_branch_any_any
|
| 3639 |
|
|
/* V4T. */
|
| 3640 |
|
|
: arm_stub_long_branch_v4t_thumb_arm);
|
| 3641 |
|
|
|
| 3642 |
|
|
/* Handle v4t short branches. */
|
| 3643 |
|
|
if ((stub_type == arm_stub_long_branch_v4t_thumb_arm)
|
| 3644 |
|
|
&& (branch_offset <= THM_MAX_FWD_BRANCH_OFFSET)
|
| 3645 |
|
|
&& (branch_offset >= THM_MAX_BWD_BRANCH_OFFSET))
|
| 3646 |
|
|
stub_type = arm_stub_short_branch_v4t_thumb_arm;
|
| 3647 |
|
|
}
|
| 3648 |
|
|
}
|
| 3649 |
|
|
}
|
| 3650 |
|
|
else if (r_type == R_ARM_CALL
|
| 3651 |
|
|
|| r_type == R_ARM_JUMP24
|
| 3652 |
|
|
|| r_type == R_ARM_PLT32
|
| 3653 |
|
|
|| r_type == R_ARM_TLS_CALL)
|
| 3654 |
|
|
{
|
| 3655 |
|
|
if (branch_type == ST_BRANCH_TO_THUMB)
|
| 3656 |
|
|
{
|
| 3657 |
|
|
/* Arm to thumb. */
|
| 3658 |
|
|
|
| 3659 |
|
|
if (sym_sec != NULL
|
| 3660 |
|
|
&& sym_sec->owner != NULL
|
| 3661 |
|
|
&& !INTERWORK_FLAG (sym_sec->owner))
|
| 3662 |
|
|
{
|
| 3663 |
|
|
(*_bfd_error_handler)
|
| 3664 |
|
|
(_("%B(%s): warning: interworking not enabled.\n"
|
| 3665 |
|
|
" first occurrence: %B: ARM call to Thumb"),
|
| 3666 |
|
|
sym_sec->owner, input_bfd, name);
|
| 3667 |
|
|
}
|
| 3668 |
|
|
|
| 3669 |
|
|
/* We have an extra 2-bytes reach because of
|
| 3670 |
|
|
the mode change (bit 24 (H) of BLX encoding). */
|
| 3671 |
|
|
if (branch_offset > (ARM_MAX_FWD_BRANCH_OFFSET + 2)
|
| 3672 |
|
|
|| (branch_offset < ARM_MAX_BWD_BRANCH_OFFSET)
|
| 3673 |
|
|
|| (r_type == R_ARM_CALL && !globals->use_blx)
|
| 3674 |
|
|
|| (r_type == R_ARM_JUMP24)
|
| 3675 |
|
|
|| (r_type == R_ARM_PLT32))
|
| 3676 |
|
|
{
|
| 3677 |
|
|
stub_type = (info->shared | globals->pic_veneer)
|
| 3678 |
|
|
/* PIC stubs. */
|
| 3679 |
|
|
? ((globals->use_blx)
|
| 3680 |
|
|
/* V5T and above. */
|
| 3681 |
|
|
? arm_stub_long_branch_any_thumb_pic
|
| 3682 |
|
|
/* V4T stub. */
|
| 3683 |
|
|
: arm_stub_long_branch_v4t_arm_thumb_pic)
|
| 3684 |
|
|
|
| 3685 |
|
|
/* non-PIC stubs. */
|
| 3686 |
|
|
: ((globals->use_blx)
|
| 3687 |
|
|
/* V5T and above. */
|
| 3688 |
|
|
? arm_stub_long_branch_any_any
|
| 3689 |
|
|
/* V4T. */
|
| 3690 |
|
|
: arm_stub_long_branch_v4t_arm_thumb);
|
| 3691 |
|
|
}
|
| 3692 |
|
|
}
|
| 3693 |
|
|
else
|
| 3694 |
|
|
{
|
| 3695 |
|
|
/* Arm to arm. */
|
| 3696 |
|
|
if (branch_offset > ARM_MAX_FWD_BRANCH_OFFSET
|
| 3697 |
|
|
|| (branch_offset < ARM_MAX_BWD_BRANCH_OFFSET))
|
| 3698 |
|
|
{
|
| 3699 |
|
|
stub_type =
|
| 3700 |
|
|
(info->shared | globals->pic_veneer)
|
| 3701 |
|
|
/* PIC stubs. */
|
| 3702 |
|
|
? (r_type == R_ARM_TLS_CALL
|
| 3703 |
|
|
/* TLS PIC Stub */
|
| 3704 |
|
|
? arm_stub_long_branch_any_tls_pic
|
| 3705 |
|
|
: arm_stub_long_branch_any_arm_pic)
|
| 3706 |
|
|
/* non-PIC stubs. */
|
| 3707 |
|
|
: arm_stub_long_branch_any_any;
|
| 3708 |
|
|
}
|
| 3709 |
|
|
}
|
| 3710 |
|
|
}
|
| 3711 |
|
|
|
| 3712 |
|
|
/* If a stub is needed, record the actual destination type. */
|
| 3713 |
|
|
if (stub_type != arm_stub_none)
|
| 3714 |
|
|
*actual_branch_type = branch_type;
|
| 3715 |
|
|
|
| 3716 |
|
|
return stub_type;
|
| 3717 |
|
|
}
|
| 3718 |
|
|
|
| 3719 |
|
|
/* Build a name for an entry in the stub hash table. */
|
| 3720 |
|
|
|
| 3721 |
|
|
static char *
|
| 3722 |
|
|
elf32_arm_stub_name (const asection *input_section,
|
| 3723 |
|
|
const asection *sym_sec,
|
| 3724 |
|
|
const struct elf32_arm_link_hash_entry *hash,
|
| 3725 |
|
|
const Elf_Internal_Rela *rel,
|
| 3726 |
|
|
enum elf32_arm_stub_type stub_type)
|
| 3727 |
|
|
{
|
| 3728 |
|
|
char *stub_name;
|
| 3729 |
|
|
bfd_size_type len;
|
| 3730 |
|
|
|
| 3731 |
|
|
if (hash)
|
| 3732 |
|
|
{
|
| 3733 |
|
|
len = 8 + 1 + strlen (hash->root.root.root.string) + 1 + 8 + 1 + 2 + 1;
|
| 3734 |
|
|
stub_name = (char *) bfd_malloc (len);
|
| 3735 |
|
|
if (stub_name != NULL)
|
| 3736 |
|
|
sprintf (stub_name, "%08x_%s+%x_%d",
|
| 3737 |
|
|
input_section->id & 0xffffffff,
|
| 3738 |
|
|
hash->root.root.root.string,
|
| 3739 |
|
|
(int) rel->r_addend & 0xffffffff,
|
| 3740 |
|
|
(int) stub_type);
|
| 3741 |
|
|
}
|
| 3742 |
|
|
else
|
| 3743 |
|
|
{
|
| 3744 |
|
|
len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1 + 2 + 1;
|
| 3745 |
|
|
stub_name = (char *) bfd_malloc (len);
|
| 3746 |
|
|
if (stub_name != NULL)
|
| 3747 |
|
|
sprintf (stub_name, "%08x_%x:%x+%x_%d",
|
| 3748 |
|
|
input_section->id & 0xffffffff,
|
| 3749 |
|
|
sym_sec->id & 0xffffffff,
|
| 3750 |
|
|
ELF32_R_TYPE (rel->r_info) == R_ARM_TLS_CALL
|
| 3751 |
|
|
|| ELF32_R_TYPE (rel->r_info) == R_ARM_THM_TLS_CALL
|
| 3752 |
|
|
? 0 : (int) ELF32_R_SYM (rel->r_info) & 0xffffffff,
|
| 3753 |
|
|
(int) rel->r_addend & 0xffffffff,
|
| 3754 |
|
|
(int) stub_type);
|
| 3755 |
|
|
}
|
| 3756 |
|
|
|
| 3757 |
|
|
return stub_name;
|
| 3758 |
|
|
}
|
| 3759 |
|
|
|
| 3760 |
|
|
/* Look up an entry in the stub hash. Stub entries are cached because
|
| 3761 |
|
|
creating the stub name takes a bit of time. */
|
| 3762 |
|
|
|
| 3763 |
|
|
static struct elf32_arm_stub_hash_entry *
|
| 3764 |
|
|
elf32_arm_get_stub_entry (const asection *input_section,
|
| 3765 |
|
|
const asection *sym_sec,
|
| 3766 |
|
|
struct elf_link_hash_entry *hash,
|
| 3767 |
|
|
const Elf_Internal_Rela *rel,
|
| 3768 |
|
|
struct elf32_arm_link_hash_table *htab,
|
| 3769 |
|
|
enum elf32_arm_stub_type stub_type)
|
| 3770 |
|
|
{
|
| 3771 |
|
|
struct elf32_arm_stub_hash_entry *stub_entry;
|
| 3772 |
|
|
struct elf32_arm_link_hash_entry *h = (struct elf32_arm_link_hash_entry *) hash;
|
| 3773 |
|
|
const asection *id_sec;
|
| 3774 |
|
|
|
| 3775 |
|
|
if ((input_section->flags & SEC_CODE) == 0)
|
| 3776 |
|
|
return NULL;
|
| 3777 |
|
|
|
| 3778 |
|
|
/* If this input section is part of a group of sections sharing one
|
| 3779 |
|
|
stub section, then use the id of the first section in the group.
|
| 3780 |
|
|
Stub names need to include a section id, as there may well be
|
| 3781 |
|
|
more than one stub used to reach say, printf, and we need to
|
| 3782 |
|
|
distinguish between them. */
|
| 3783 |
|
|
id_sec = htab->stub_group[input_section->id].link_sec;
|
| 3784 |
|
|
|
| 3785 |
|
|
if (h != NULL && h->stub_cache != NULL
|
| 3786 |
|
|
&& h->stub_cache->h == h
|
| 3787 |
|
|
&& h->stub_cache->id_sec == id_sec
|
| 3788 |
|
|
&& h->stub_cache->stub_type == stub_type)
|
| 3789 |
|
|
{
|
| 3790 |
|
|
stub_entry = h->stub_cache;
|
| 3791 |
|
|
}
|
| 3792 |
|
|
else
|
| 3793 |
|
|
{
|
| 3794 |
|
|
char *stub_name;
|
| 3795 |
|
|
|
| 3796 |
|
|
stub_name = elf32_arm_stub_name (id_sec, sym_sec, h, rel, stub_type);
|
| 3797 |
|
|
if (stub_name == NULL)
|
| 3798 |
|
|
return NULL;
|
| 3799 |
|
|
|
| 3800 |
|
|
stub_entry = arm_stub_hash_lookup (&htab->stub_hash_table,
|
| 3801 |
|
|
stub_name, FALSE, FALSE);
|
| 3802 |
|
|
if (h != NULL)
|
| 3803 |
|
|
h->stub_cache = stub_entry;
|
| 3804 |
|
|
|
| 3805 |
|
|
free (stub_name);
|
| 3806 |
|
|
}
|
| 3807 |
|
|
|
| 3808 |
|
|
return stub_entry;
|
| 3809 |
|
|
}
|
| 3810 |
|
|
|
| 3811 |
|
|
/* Find or create a stub section. Returns a pointer to the stub section, and
|
| 3812 |
|
|
the section to which the stub section will be attached (in *LINK_SEC_P).
|
| 3813 |
|
|
LINK_SEC_P may be NULL. */
|
| 3814 |
|
|
|
| 3815 |
|
|
static asection *
|
| 3816 |
|
|
elf32_arm_create_or_find_stub_sec (asection **link_sec_p, asection *section,
|
| 3817 |
|
|
struct elf32_arm_link_hash_table *htab)
|
| 3818 |
|
|
{
|
| 3819 |
|
|
asection *link_sec;
|
| 3820 |
|
|
asection *stub_sec;
|
| 3821 |
|
|
|
| 3822 |
|
|
link_sec = htab->stub_group[section->id].link_sec;
|
| 3823 |
163 |
khays |
BFD_ASSERT (link_sec != NULL);
|
| 3824 |
14 |
khays |
stub_sec = htab->stub_group[section->id].stub_sec;
|
| 3825 |
163 |
khays |
|
| 3826 |
14 |
khays |
if (stub_sec == NULL)
|
| 3827 |
|
|
{
|
| 3828 |
|
|
stub_sec = htab->stub_group[link_sec->id].stub_sec;
|
| 3829 |
|
|
if (stub_sec == NULL)
|
| 3830 |
|
|
{
|
| 3831 |
|
|
size_t namelen;
|
| 3832 |
|
|
bfd_size_type len;
|
| 3833 |
|
|
char *s_name;
|
| 3834 |
|
|
|
| 3835 |
|
|
namelen = strlen (link_sec->name);
|
| 3836 |
|
|
len = namelen + sizeof (STUB_SUFFIX);
|
| 3837 |
|
|
s_name = (char *) bfd_alloc (htab->stub_bfd, len);
|
| 3838 |
|
|
if (s_name == NULL)
|
| 3839 |
|
|
return NULL;
|
| 3840 |
|
|
|
| 3841 |
|
|
memcpy (s_name, link_sec->name, namelen);
|
| 3842 |
|
|
memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
|
| 3843 |
|
|
stub_sec = (*htab->add_stub_section) (s_name, link_sec);
|
| 3844 |
|
|
if (stub_sec == NULL)
|
| 3845 |
|
|
return NULL;
|
| 3846 |
|
|
htab->stub_group[link_sec->id].stub_sec = stub_sec;
|
| 3847 |
|
|
}
|
| 3848 |
|
|
htab->stub_group[section->id].stub_sec = stub_sec;
|
| 3849 |
|
|
}
|
| 3850 |
|
|
|
| 3851 |
|
|
if (link_sec_p)
|
| 3852 |
|
|
*link_sec_p = link_sec;
|
| 3853 |
|
|
|
| 3854 |
|
|
return stub_sec;
|
| 3855 |
|
|
}
|
| 3856 |
|
|
|
| 3857 |
|
|
/* Add a new stub entry to the stub hash. Not all fields of the new
|
| 3858 |
|
|
stub entry are initialised. */
|
| 3859 |
|
|
|
| 3860 |
|
|
static struct elf32_arm_stub_hash_entry *
|
| 3861 |
|
|
elf32_arm_add_stub (const char *stub_name,
|
| 3862 |
|
|
asection *section,
|
| 3863 |
|
|
struct elf32_arm_link_hash_table *htab)
|
| 3864 |
|
|
{
|
| 3865 |
|
|
asection *link_sec;
|
| 3866 |
|
|
asection *stub_sec;
|
| 3867 |
|
|
struct elf32_arm_stub_hash_entry *stub_entry;
|
| 3868 |
|
|
|
| 3869 |
|
|
stub_sec = elf32_arm_create_or_find_stub_sec (&link_sec, section, htab);
|
| 3870 |
|
|
if (stub_sec == NULL)
|
| 3871 |
|
|
return NULL;
|
| 3872 |
|
|
|
| 3873 |
|
|
/* Enter this entry into the linker stub hash table. */
|
| 3874 |
|
|
stub_entry = arm_stub_hash_lookup (&htab->stub_hash_table, stub_name,
|
| 3875 |
|
|
TRUE, FALSE);
|
| 3876 |
|
|
if (stub_entry == NULL)
|
| 3877 |
|
|
{
|
| 3878 |
|
|
(*_bfd_error_handler) (_("%s: cannot create stub entry %s"),
|
| 3879 |
|
|
section->owner,
|
| 3880 |
|
|
stub_name);
|
| 3881 |
|
|
return NULL;
|
| 3882 |
|
|
}
|
| 3883 |
|
|
|
| 3884 |
|
|
stub_entry->stub_sec = stub_sec;
|
| 3885 |
|
|
stub_entry->stub_offset = 0;
|
| 3886 |
|
|
stub_entry->id_sec = link_sec;
|
| 3887 |
|
|
|
| 3888 |
|
|
return stub_entry;
|
| 3889 |
|
|
}
|
| 3890 |
|
|
|
| 3891 |
|
|
/* Store an Arm insn into an output section not processed by
|
| 3892 |
|
|
elf32_arm_write_section. */
|
| 3893 |
|
|
|
| 3894 |
|
|
static void
|
| 3895 |
|
|
put_arm_insn (struct elf32_arm_link_hash_table * htab,
|
| 3896 |
|
|
bfd * output_bfd, bfd_vma val, void * ptr)
|
| 3897 |
|
|
{
|
| 3898 |
|
|
if (htab->byteswap_code != bfd_little_endian (output_bfd))
|
| 3899 |
|
|
bfd_putl32 (val, ptr);
|
| 3900 |
|
|
else
|
| 3901 |
|
|
bfd_putb32 (val, ptr);
|
| 3902 |
|
|
}
|
| 3903 |
|
|
|
| 3904 |
|
|
/* Store a 16-bit Thumb insn into an output section not processed by
|
| 3905 |
|
|
elf32_arm_write_section. */
|
| 3906 |
|
|
|
| 3907 |
|
|
static void
|
| 3908 |
|
|
put_thumb_insn (struct elf32_arm_link_hash_table * htab,
|
| 3909 |
|
|
bfd * output_bfd, bfd_vma val, void * ptr)
|
| 3910 |
|
|
{
|
| 3911 |
|
|
if (htab->byteswap_code != bfd_little_endian (output_bfd))
|
| 3912 |
|
|
bfd_putl16 (val, ptr);
|
| 3913 |
|
|
else
|
| 3914 |
|
|
bfd_putb16 (val, ptr);
|
| 3915 |
|
|
}
|
| 3916 |
|
|
|
| 3917 |
|
|
/* If it's possible to change R_TYPE to a more efficient access
|
| 3918 |
|
|
model, return the new reloc type. */
|
| 3919 |
|
|
|
| 3920 |
|
|
static unsigned
|
| 3921 |
|
|
elf32_arm_tls_transition (struct bfd_link_info *info, int r_type,
|
| 3922 |
|
|
struct elf_link_hash_entry *h)
|
| 3923 |
|
|
{
|
| 3924 |
|
|
int is_local = (h == NULL);
|
| 3925 |
|
|
|
| 3926 |
|
|
if (info->shared || (h && h->root.type == bfd_link_hash_undefweak))
|
| 3927 |
|
|
return r_type;
|
| 3928 |
|
|
|
| 3929 |
|
|
/* We do not support relaxations for Old TLS models. */
|
| 3930 |
|
|
switch (r_type)
|
| 3931 |
|
|
{
|
| 3932 |
|
|
case R_ARM_TLS_GOTDESC:
|
| 3933 |
|
|
case R_ARM_TLS_CALL:
|
| 3934 |
|
|
case R_ARM_THM_TLS_CALL:
|
| 3935 |
|
|
case R_ARM_TLS_DESCSEQ:
|
| 3936 |
|
|
case R_ARM_THM_TLS_DESCSEQ:
|
| 3937 |
|
|
return is_local ? R_ARM_TLS_LE32 : R_ARM_TLS_IE32;
|
| 3938 |
|
|
}
|
| 3939 |
|
|
|
| 3940 |
|
|
return r_type;
|
| 3941 |
|
|
}
|
| 3942 |
|
|
|
| 3943 |
|
|
static bfd_reloc_status_type elf32_arm_final_link_relocate
|
| 3944 |
|
|
(reloc_howto_type *, bfd *, bfd *, asection *, bfd_byte *,
|
| 3945 |
|
|
Elf_Internal_Rela *, bfd_vma, struct bfd_link_info *, asection *,
|
| 3946 |
|
|
const char *, unsigned char, enum arm_st_branch_type,
|
| 3947 |
|
|
struct elf_link_hash_entry *, bfd_boolean *, char **);
|
| 3948 |
|
|
|
| 3949 |
|
|
static unsigned int
|
| 3950 |
|
|
arm_stub_required_alignment (enum elf32_arm_stub_type stub_type)
|
| 3951 |
|
|
{
|
| 3952 |
|
|
switch (stub_type)
|
| 3953 |
|
|
{
|
| 3954 |
|
|
case arm_stub_a8_veneer_b_cond:
|
| 3955 |
|
|
case arm_stub_a8_veneer_b:
|
| 3956 |
|
|
case arm_stub_a8_veneer_bl:
|
| 3957 |
|
|
return 2;
|
| 3958 |
|
|
|
| 3959 |
|
|
case arm_stub_long_branch_any_any:
|
| 3960 |
|
|
case arm_stub_long_branch_v4t_arm_thumb:
|
| 3961 |
|
|
case arm_stub_long_branch_thumb_only:
|
| 3962 |
|
|
case arm_stub_long_branch_v4t_thumb_thumb:
|
| 3963 |
|
|
case arm_stub_long_branch_v4t_thumb_arm:
|
| 3964 |
|
|
case arm_stub_short_branch_v4t_thumb_arm:
|
| 3965 |
|
|
case arm_stub_long_branch_any_arm_pic:
|
| 3966 |
|
|
case arm_stub_long_branch_any_thumb_pic:
|
| 3967 |
|
|
case arm_stub_long_branch_v4t_thumb_thumb_pic:
|
| 3968 |
|
|
case arm_stub_long_branch_v4t_arm_thumb_pic:
|
| 3969 |
|
|
case arm_stub_long_branch_v4t_thumb_arm_pic:
|
| 3970 |
|
|
case arm_stub_long_branch_thumb_only_pic:
|
| 3971 |
|
|
case arm_stub_long_branch_any_tls_pic:
|
| 3972 |
|
|
case arm_stub_long_branch_v4t_thumb_tls_pic:
|
| 3973 |
|
|
case arm_stub_a8_veneer_blx:
|
| 3974 |
|
|
return 4;
|
| 3975 |
|
|
|
| 3976 |
|
|
default:
|
| 3977 |
|
|
abort (); /* Should be unreachable. */
|
| 3978 |
|
|
}
|
| 3979 |
|
|
}
|
| 3980 |
|
|
|
| 3981 |
|
|
static bfd_boolean
|
| 3982 |
|
|
arm_build_one_stub (struct bfd_hash_entry *gen_entry,
|
| 3983 |
|
|
void * in_arg)
|
| 3984 |
|
|
{
|
| 3985 |
|
|
#define MAXRELOCS 2
|
| 3986 |
|
|
struct elf32_arm_stub_hash_entry *stub_entry;
|
| 3987 |
|
|
struct elf32_arm_link_hash_table *globals;
|
| 3988 |
|
|
struct bfd_link_info *info;
|
| 3989 |
|
|
asection *stub_sec;
|
| 3990 |
|
|
bfd *stub_bfd;
|
| 3991 |
|
|
bfd_byte *loc;
|
| 3992 |
|
|
bfd_vma sym_value;
|
| 3993 |
|
|
int template_size;
|
| 3994 |
|
|
int size;
|
| 3995 |
|
|
const insn_sequence *template_sequence;
|
| 3996 |
|
|
int i;
|
| 3997 |
|
|
int stub_reloc_idx[MAXRELOCS] = {-1, -1};
|
| 3998 |
|
|
int stub_reloc_offset[MAXRELOCS] = {0, 0};
|
| 3999 |
|
|
int nrelocs = 0;
|
| 4000 |
|
|
|
| 4001 |
|
|
/* Massage our args to the form they really have. */
|
| 4002 |
|
|
stub_entry = (struct elf32_arm_stub_hash_entry *) gen_entry;
|
| 4003 |
|
|
info = (struct bfd_link_info *) in_arg;
|
| 4004 |
|
|
|
| 4005 |
|
|
globals = elf32_arm_hash_table (info);
|
| 4006 |
|
|
if (globals == NULL)
|
| 4007 |
|
|
return FALSE;
|
| 4008 |
|
|
|
| 4009 |
|
|
stub_sec = stub_entry->stub_sec;
|
| 4010 |
|
|
|
| 4011 |
|
|
if ((globals->fix_cortex_a8 < 0)
|
| 4012 |
|
|
!= (arm_stub_required_alignment (stub_entry->stub_type) == 2))
|
| 4013 |
|
|
/* We have to do less-strictly-aligned fixes last. */
|
| 4014 |
|
|
return TRUE;
|
| 4015 |
|
|
|
| 4016 |
|
|
/* Make a note of the offset within the stubs for this entry. */
|
| 4017 |
|
|
stub_entry->stub_offset = stub_sec->size;
|
| 4018 |
|
|
loc = stub_sec->contents + stub_entry->stub_offset;
|
| 4019 |
|
|
|
| 4020 |
|
|
stub_bfd = stub_sec->owner;
|
| 4021 |
|
|
|
| 4022 |
|
|
/* This is the address of the stub destination. */
|
| 4023 |
|
|
sym_value = (stub_entry->target_value
|
| 4024 |
|
|
+ stub_entry->target_section->output_offset
|
| 4025 |
|
|
+ stub_entry->target_section->output_section->vma);
|
| 4026 |
|
|
|
| 4027 |
|
|
template_sequence = stub_entry->stub_template;
|
| 4028 |
|
|
template_size = stub_entry->stub_template_size;
|
| 4029 |
|
|
|
| 4030 |
|
|
size = 0;
|
| 4031 |
|
|
for (i = 0; i < template_size; i++)
|
| 4032 |
|
|
{
|
| 4033 |
|
|
switch (template_sequence[i].type)
|
| 4034 |
|
|
{
|
| 4035 |
|
|
case THUMB16_TYPE:
|
| 4036 |
|
|
{
|
| 4037 |
|
|
bfd_vma data = (bfd_vma) template_sequence[i].data;
|
| 4038 |
|
|
if (template_sequence[i].reloc_addend != 0)
|
| 4039 |
|
|
{
|
| 4040 |
|
|
/* We've borrowed the reloc_addend field to mean we should
|
| 4041 |
|
|
insert a condition code into this (Thumb-1 branch)
|
| 4042 |
|
|
instruction. See THUMB16_BCOND_INSN. */
|
| 4043 |
|
|
BFD_ASSERT ((data & 0xff00) == 0xd000);
|
| 4044 |
|
|
data |= ((stub_entry->orig_insn >> 22) & 0xf) << 8;
|
| 4045 |
|
|
}
|
| 4046 |
|
|
bfd_put_16 (stub_bfd, data, loc + size);
|
| 4047 |
|
|
size += 2;
|
| 4048 |
|
|
}
|
| 4049 |
|
|
break;
|
| 4050 |
|
|
|
| 4051 |
|
|
case THUMB32_TYPE:
|
| 4052 |
|
|
bfd_put_16 (stub_bfd,
|
| 4053 |
|
|
(template_sequence[i].data >> 16) & 0xffff,
|
| 4054 |
|
|
loc + size);
|
| 4055 |
|
|
bfd_put_16 (stub_bfd, template_sequence[i].data & 0xffff,
|
| 4056 |
|
|
loc + size + 2);
|
| 4057 |
|
|
if (template_sequence[i].r_type != R_ARM_NONE)
|
| 4058 |
|
|
{
|
| 4059 |
|
|
stub_reloc_idx[nrelocs] = i;
|
| 4060 |
|
|
stub_reloc_offset[nrelocs++] = size;
|
| 4061 |
|
|
}
|
| 4062 |
|
|
size += 4;
|
| 4063 |
|
|
break;
|
| 4064 |
|
|
|
| 4065 |
|
|
case ARM_TYPE:
|
| 4066 |
|
|
bfd_put_32 (stub_bfd, template_sequence[i].data,
|
| 4067 |
|
|
loc + size);
|
| 4068 |
|
|
/* Handle cases where the target is encoded within the
|
| 4069 |
|
|
instruction. */
|
| 4070 |
|
|
if (template_sequence[i].r_type == R_ARM_JUMP24)
|
| 4071 |
|
|
{
|
| 4072 |
|
|
stub_reloc_idx[nrelocs] = i;
|
| 4073 |
|
|
stub_reloc_offset[nrelocs++] = size;
|
| 4074 |
|
|
}
|
| 4075 |
|
|
size += 4;
|
| 4076 |
|
|
break;
|
| 4077 |
|
|
|
| 4078 |
|
|
case DATA_TYPE:
|
| 4079 |
|
|
bfd_put_32 (stub_bfd, template_sequence[i].data, loc + size);
|
| 4080 |
|
|
stub_reloc_idx[nrelocs] = i;
|
| 4081 |
|
|
stub_reloc_offset[nrelocs++] = size;
|
| 4082 |
|
|
size += 4;
|
| 4083 |
|
|
break;
|
| 4084 |
|
|
|
| 4085 |
|
|
default:
|
| 4086 |
|
|
BFD_FAIL ();
|
| 4087 |
|
|
return FALSE;
|
| 4088 |
|
|
}
|
| 4089 |
|
|
}
|
| 4090 |
|
|
|
| 4091 |
|
|
stub_sec->size += size;
|
| 4092 |
|
|
|
| 4093 |
|
|
/* Stub size has already been computed in arm_size_one_stub. Check
|
| 4094 |
|
|
consistency. */
|
| 4095 |
|
|
BFD_ASSERT (size == stub_entry->stub_size);
|
| 4096 |
|
|
|
| 4097 |
|
|
/* Destination is Thumb. Force bit 0 to 1 to reflect this. */
|
| 4098 |
|
|
if (stub_entry->branch_type == ST_BRANCH_TO_THUMB)
|
| 4099 |
|
|
sym_value |= 1;
|
| 4100 |
|
|
|
| 4101 |
|
|
/* Assume there is at least one and at most MAXRELOCS entries to relocate
|
| 4102 |
|
|
in each stub. */
|
| 4103 |
|
|
BFD_ASSERT (nrelocs != 0 && nrelocs <= MAXRELOCS);
|
| 4104 |
|
|
|
| 4105 |
|
|
for (i = 0; i < nrelocs; i++)
|
| 4106 |
|
|
if (template_sequence[stub_reloc_idx[i]].r_type == R_ARM_THM_JUMP24
|
| 4107 |
|
|
|| template_sequence[stub_reloc_idx[i]].r_type == R_ARM_THM_JUMP19
|
| 4108 |
|
|
|| template_sequence[stub_reloc_idx[i]].r_type == R_ARM_THM_CALL
|
| 4109 |
|
|
|| template_sequence[stub_reloc_idx[i]].r_type == R_ARM_THM_XPC22)
|
| 4110 |
|
|
{
|
| 4111 |
|
|
Elf_Internal_Rela rel;
|
| 4112 |
|
|
bfd_boolean unresolved_reloc;
|
| 4113 |
|
|
char *error_message;
|
| 4114 |
|
|
enum arm_st_branch_type branch_type
|
| 4115 |
|
|
= (template_sequence[stub_reloc_idx[i]].r_type != R_ARM_THM_XPC22
|
| 4116 |
|
|
? ST_BRANCH_TO_THUMB : ST_BRANCH_TO_ARM);
|
| 4117 |
|
|
bfd_vma points_to = sym_value + stub_entry->target_addend;
|
| 4118 |
|
|
|
| 4119 |
|
|
rel.r_offset = stub_entry->stub_offset + stub_reloc_offset[i];
|
| 4120 |
|
|
rel.r_info = ELF32_R_INFO (0,
|
| 4121 |
|
|
template_sequence[stub_reloc_idx[i]].r_type);
|
| 4122 |
|
|
rel.r_addend = template_sequence[stub_reloc_idx[i]].reloc_addend;
|
| 4123 |
|
|
|
| 4124 |
|
|
if (stub_entry->stub_type == arm_stub_a8_veneer_b_cond && i == 0)
|
| 4125 |
|
|
/* The first relocation in the elf32_arm_stub_a8_veneer_b_cond[]
|
| 4126 |
|
|
template should refer back to the instruction after the original
|
| 4127 |
|
|
branch. */
|
| 4128 |
|
|
points_to = sym_value;
|
| 4129 |
|
|
|
| 4130 |
|
|
/* There may be unintended consequences if this is not true. */
|
| 4131 |
|
|
BFD_ASSERT (stub_entry->h == NULL);
|
| 4132 |
|
|
|
| 4133 |
|
|
/* Note: _bfd_final_link_relocate doesn't handle these relocations
|
| 4134 |
|
|
properly. We should probably use this function unconditionally,
|
| 4135 |
|
|
rather than only for certain relocations listed in the enclosing
|
| 4136 |
|
|
conditional, for the sake of consistency. */
|
| 4137 |
|
|
elf32_arm_final_link_relocate (elf32_arm_howto_from_type
|
| 4138 |
|
|
(template_sequence[stub_reloc_idx[i]].r_type),
|
| 4139 |
|
|
stub_bfd, info->output_bfd, stub_sec, stub_sec->contents, &rel,
|
| 4140 |
|
|
points_to, info, stub_entry->target_section, "", STT_FUNC,
|
| 4141 |
|
|
branch_type, (struct elf_link_hash_entry *) stub_entry->h,
|
| 4142 |
|
|
&unresolved_reloc, &error_message);
|
| 4143 |
|
|
}
|
| 4144 |
|
|
else
|
| 4145 |
|
|
{
|
| 4146 |
|
|
Elf_Internal_Rela rel;
|
| 4147 |
|
|
bfd_boolean unresolved_reloc;
|
| 4148 |
|
|
char *error_message;
|
| 4149 |
|
|
bfd_vma points_to = sym_value + stub_entry->target_addend
|
| 4150 |
|
|
+ template_sequence[stub_reloc_idx[i]].reloc_addend;
|
| 4151 |
|
|
|
| 4152 |
|
|
rel.r_offset = stub_entry->stub_offset + stub_reloc_offset[i];
|
| 4153 |
|
|
rel.r_info = ELF32_R_INFO (0,
|
| 4154 |
|
|
template_sequence[stub_reloc_idx[i]].r_type);
|
| 4155 |
|
|
rel.r_addend = 0;
|
| 4156 |
|
|
|
| 4157 |
|
|
elf32_arm_final_link_relocate (elf32_arm_howto_from_type
|
| 4158 |
|
|
(template_sequence[stub_reloc_idx[i]].r_type),
|
| 4159 |
|
|
stub_bfd, info->output_bfd, stub_sec, stub_sec->contents, &rel,
|
| 4160 |
|
|
points_to, info, stub_entry->target_section, "", STT_FUNC,
|
| 4161 |
|
|
stub_entry->branch_type,
|
| 4162 |
|
|
(struct elf_link_hash_entry *) stub_entry->h, &unresolved_reloc,
|
| 4163 |
|
|
&error_message);
|
| 4164 |
|
|
}
|
| 4165 |
|
|
|
| 4166 |
|
|
return TRUE;
|
| 4167 |
|
|
#undef MAXRELOCS
|
| 4168 |
|
|
}
|
| 4169 |
|
|
|
| 4170 |
|
|
/* Calculate the template, template size and instruction size for a stub.
|
| 4171 |
|
|
Return value is the instruction size. */
|
| 4172 |
|
|
|
| 4173 |
|
|
static unsigned int
|
| 4174 |
|
|
find_stub_size_and_template (enum elf32_arm_stub_type stub_type,
|
| 4175 |
|
|
const insn_sequence **stub_template,
|
| 4176 |
|
|
int *stub_template_size)
|
| 4177 |
|
|
{
|
| 4178 |
|
|
const insn_sequence *template_sequence = NULL;
|
| 4179 |
|
|
int template_size = 0, i;
|
| 4180 |
|
|
unsigned int size;
|
| 4181 |
|
|
|
| 4182 |
|
|
template_sequence = stub_definitions[stub_type].template_sequence;
|
| 4183 |
|
|
if (stub_template)
|
| 4184 |
|
|
*stub_template = template_sequence;
|
| 4185 |
|
|
|
| 4186 |
|
|
template_size = stub_definitions[stub_type].template_size;
|
| 4187 |
|
|
if (stub_template_size)
|
| 4188 |
|
|
*stub_template_size = template_size;
|
| 4189 |
|
|
|
| 4190 |
|
|
size = 0;
|
| 4191 |
|
|
for (i = 0; i < template_size; i++)
|
| 4192 |
|
|
{
|
| 4193 |
|
|
switch (template_sequence[i].type)
|
| 4194 |
|
|
{
|
| 4195 |
|
|
case THUMB16_TYPE:
|
| 4196 |
|
|
size += 2;
|
| 4197 |
|
|
break;
|
| 4198 |
|
|
|
| 4199 |
|
|
case ARM_TYPE:
|
| 4200 |
|
|
case THUMB32_TYPE:
|
| 4201 |
|
|
case DATA_TYPE:
|
| 4202 |
|
|
size += 4;
|
| 4203 |
|
|
break;
|
| 4204 |
|
|
|
| 4205 |
|
|
default:
|
| 4206 |
|
|
BFD_FAIL ();
|
| 4207 |
|
|
return 0;
|
| 4208 |
|
|
}
|
| 4209 |
|
|
}
|
| 4210 |
|
|
|
| 4211 |
|
|
return size;
|
| 4212 |
|
|
}
|
| 4213 |
|
|
|
| 4214 |
|
|
/* As above, but don't actually build the stub. Just bump offset so
|
| 4215 |
|
|
we know stub section sizes. */
|
| 4216 |
|
|
|
| 4217 |
|
|
static bfd_boolean
|
| 4218 |
|
|
arm_size_one_stub (struct bfd_hash_entry *gen_entry,
|
| 4219 |
|
|
void *in_arg ATTRIBUTE_UNUSED)
|
| 4220 |
|
|
{
|
| 4221 |
|
|
struct elf32_arm_stub_hash_entry *stub_entry;
|
| 4222 |
|
|
const insn_sequence *template_sequence;
|
| 4223 |
|
|
int template_size, size;
|
| 4224 |
|
|
|
| 4225 |
|
|
/* Massage our args to the form they really have. */
|
| 4226 |
|
|
stub_entry = (struct elf32_arm_stub_hash_entry *) gen_entry;
|
| 4227 |
|
|
|
| 4228 |
|
|
BFD_ASSERT((stub_entry->stub_type > arm_stub_none)
|
| 4229 |
|
|
&& stub_entry->stub_type < ARRAY_SIZE(stub_definitions));
|
| 4230 |
|
|
|
| 4231 |
|
|
size = find_stub_size_and_template (stub_entry->stub_type, &template_sequence,
|
| 4232 |
|
|
&template_size);
|
| 4233 |
|
|
|
| 4234 |
|
|
stub_entry->stub_size = size;
|
| 4235 |
|
|
stub_entry->stub_template = template_sequence;
|
| 4236 |
|
|
stub_entry->stub_template_size = template_size;
|
| 4237 |
|
|
|
| 4238 |
|
|
size = (size + 7) & ~7;
|
| 4239 |
|
|
stub_entry->stub_sec->size += size;
|
| 4240 |
|
|
|
| 4241 |
|
|
return TRUE;
|
| 4242 |
|
|
}
|
| 4243 |
|
|
|
| 4244 |
|
|
/* External entry points for sizing and building linker stubs. */
|
| 4245 |
|
|
|
| 4246 |
|
|
/* Set up various things so that we can make a list of input sections
|
| 4247 |
|
|
for each output section included in the link. Returns -1 on error,
|
| 4248 |
|
|
|
| 4249 |
|
|
|
| 4250 |
|
|
int
|
| 4251 |
|
|
elf32_arm_setup_section_lists (bfd *output_bfd,
|
| 4252 |
|
|
struct bfd_link_info *info)
|
| 4253 |
|
|
{
|
| 4254 |
|
|
bfd *input_bfd;
|
| 4255 |
|
|
unsigned int bfd_count;
|
| 4256 |
|
|
int top_id, top_index;
|
| 4257 |
|
|
asection *section;
|
| 4258 |
|
|
asection **input_list, **list;
|
| 4259 |
|
|
bfd_size_type amt;
|
| 4260 |
|
|
struct elf32_arm_link_hash_table *htab = elf32_arm_hash_table (info);
|
| 4261 |
|
|
|
| 4262 |
|
|
if (htab == NULL)
|
| 4263 |
|
|
return 0;
|
| 4264 |
|
|
if (! is_elf_hash_table (htab))
|
| 4265 |
|
|
return 0;
|
| 4266 |
|
|
|
| 4267 |
|
|
/* Count the number of input BFDs and find the top input section id. */
|
| 4268 |
|
|
for (input_bfd = info->input_bfds, bfd_count = 0, top_id = 0;
|
| 4269 |
|
|
input_bfd != NULL;
|
| 4270 |
|
|
input_bfd = input_bfd->link_next)
|
| 4271 |
|
|
{
|
| 4272 |
|
|
bfd_count += 1;
|
| 4273 |
|
|
for (section = input_bfd->sections;
|
| 4274 |
|
|
section != NULL;
|
| 4275 |
|
|
section = section->next)
|
| 4276 |
|
|
{
|
| 4277 |
|
|
if (top_id < section->id)
|
| 4278 |
|
|
top_id = section->id;
|
| 4279 |
|
|
}
|
| 4280 |
|
|
}
|
| 4281 |
|
|
htab->bfd_count = bfd_count;
|
| 4282 |
|
|
|
| 4283 |
|
|
amt = sizeof (struct map_stub) * (top_id + 1);
|
| 4284 |
|
|
htab->stub_group = (struct map_stub *) bfd_zmalloc (amt);
|
| 4285 |
|
|
if (htab->stub_group == NULL)
|
| 4286 |
|
|
return -1;
|
| 4287 |
|
|
htab->top_id = top_id;
|
| 4288 |
|
|
|
| 4289 |
|
|
/* We can't use output_bfd->section_count here to find the top output
|
| 4290 |
|
|
section index as some sections may have been removed, and
|
| 4291 |
|
|
_bfd_strip_section_from_output doesn't renumber the indices. */
|
| 4292 |
|
|
for (section = output_bfd->sections, top_index = 0;
|
| 4293 |
|
|
section != NULL;
|
| 4294 |
|
|
section = section->next)
|
| 4295 |
|
|
{
|
| 4296 |
|
|
if (top_index < section->index)
|
| 4297 |
|
|
top_index = section->index;
|
| 4298 |
|
|
}
|
| 4299 |
|
|
|
| 4300 |
|
|
htab->top_index = top_index;
|
| 4301 |
|
|
amt = sizeof (asection *) * (top_index + 1);
|
| 4302 |
|
|
input_list = (asection **) bfd_malloc (amt);
|
| 4303 |
|
|
htab->input_list = input_list;
|
| 4304 |
|
|
if (input_list == NULL)
|
| 4305 |
|
|
return -1;
|
| 4306 |
|
|
|
| 4307 |
|
|
/* For sections we aren't interested in, mark their entries with a
|
| 4308 |
|
|
value we can check later. */
|
| 4309 |
|
|
list = input_list + top_index;
|
| 4310 |
|
|
do
|
| 4311 |
|
|
*list = bfd_abs_section_ptr;
|
| 4312 |
|
|
while (list-- != input_list);
|
| 4313 |
|
|
|
| 4314 |
|
|
for (section = output_bfd->sections;
|
| 4315 |
|
|
section != NULL;
|
| 4316 |
|
|
section = section->next)
|
| 4317 |
|
|
{
|
| 4318 |
|
|
if ((section->flags & SEC_CODE) != 0)
|
| 4319 |
|
|
input_list[section->index] = NULL;
|
| 4320 |
|
|
}
|
| 4321 |
|
|
|
| 4322 |
|
|
return 1;
|
| 4323 |
|
|
}
|
| 4324 |
|
|
|
| 4325 |
|
|
/* The linker repeatedly calls this function for each input section,
|
| 4326 |
|
|
in the order that input sections are linked into output sections.
|
| 4327 |
|
|
Build lists of input sections to determine groupings between which
|
| 4328 |
|
|
we may insert linker stubs. */
|
| 4329 |
|
|
|
| 4330 |
|
|
void
|
| 4331 |
|
|
elf32_arm_next_input_section (struct bfd_link_info *info,
|
| 4332 |
|
|
asection *isec)
|
| 4333 |
|
|
{
|
| 4334 |
|
|
struct elf32_arm_link_hash_table *htab = elf32_arm_hash_table (info);
|
| 4335 |
|
|
|
| 4336 |
|
|
if (htab == NULL)
|
| 4337 |
|
|
return;
|
| 4338 |
|
|
|
| 4339 |
|
|
if (isec->output_section->index <= htab->top_index)
|
| 4340 |
|
|
{
|
| 4341 |
|
|
asection **list = htab->input_list + isec->output_section->index;
|
| 4342 |
|
|
|
| 4343 |
|
|
if (*list != bfd_abs_section_ptr && (isec->flags & SEC_CODE) != 0)
|
| 4344 |
|
|
{
|
| 4345 |
|
|
/* Steal the link_sec pointer for our list. */
|
| 4346 |
|
|
#define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
|
| 4347 |
|
|
/* This happens to make the list in reverse order,
|
| 4348 |
|
|
which we reverse later. */
|
| 4349 |
|
|
PREV_SEC (isec) = *list;
|
| 4350 |
|
|
*list = isec;
|
| 4351 |
|
|
}
|
| 4352 |
|
|
}
|
| 4353 |
|
|
}
|
| 4354 |
|
|
|
| 4355 |
|
|
/* See whether we can group stub sections together. Grouping stub
|
| 4356 |
|
|
sections may result in fewer stubs. More importantly, we need to
|
| 4357 |
|
|
put all .init* and .fini* stubs at the end of the .init or
|
| 4358 |
|
|
.fini output sections respectively, because glibc splits the
|
| 4359 |
|
|
_init and _fini functions into multiple parts. Putting a stub in
|
| 4360 |
|
|
the middle of a function is not a good idea. */
|
| 4361 |
|
|
|
| 4362 |
|
|
static void
|
| 4363 |
|
|
group_sections (struct elf32_arm_link_hash_table *htab,
|
| 4364 |
|
|
bfd_size_type stub_group_size,
|
| 4365 |
|
|
bfd_boolean stubs_always_after_branch)
|
| 4366 |
|
|
{
|
| 4367 |
|
|
asection **list = htab->input_list;
|
| 4368 |
|
|
|
| 4369 |
|
|
do
|
| 4370 |
|
|
{
|
| 4371 |
|
|
asection *tail = *list;
|
| 4372 |
|
|
asection *head;
|
| 4373 |
|
|
|
| 4374 |
|
|
if (tail == bfd_abs_section_ptr)
|
| 4375 |
|
|
continue;
|
| 4376 |
|
|
|
| 4377 |
|
|
/* Reverse the list: we must avoid placing stubs at the
|
| 4378 |
|
|
beginning of the section because the beginning of the text
|
| 4379 |
|
|
section may be required for an interrupt vector in bare metal
|
| 4380 |
|
|
code. */
|
| 4381 |
|
|
#define NEXT_SEC PREV_SEC
|
| 4382 |
|
|
head = NULL;
|
| 4383 |
|
|
while (tail != NULL)
|
| 4384 |
|
|
{
|
| 4385 |
|
|
/* Pop from tail. */
|
| 4386 |
|
|
asection *item = tail;
|
| 4387 |
|
|
tail = PREV_SEC (item);
|
| 4388 |
|
|
|
| 4389 |
|
|
/* Push on head. */
|
| 4390 |
|
|
NEXT_SEC (item) = head;
|
| 4391 |
|
|
head = item;
|
| 4392 |
|
|
}
|
| 4393 |
|
|
|
| 4394 |
|
|
while (head != NULL)
|
| 4395 |
|
|
{
|
| 4396 |
|
|
asection *curr;
|
| 4397 |
|
|
asection *next;
|
| 4398 |
|
|
bfd_vma stub_group_start = head->output_offset;
|
| 4399 |
|
|
bfd_vma end_of_next;
|
| 4400 |
|
|
|
| 4401 |
|
|
curr = head;
|
| 4402 |
|
|
while (NEXT_SEC (curr) != NULL)
|
| 4403 |
|
|
{
|
| 4404 |
|
|
next = NEXT_SEC (curr);
|
| 4405 |
|
|
end_of_next = next->output_offset + next->size;
|
| 4406 |
|
|
if (end_of_next - stub_group_start >= stub_group_size)
|
| 4407 |
|
|
/* End of NEXT is too far from start, so stop. */
|
| 4408 |
|
|
break;
|
| 4409 |
|
|
/* Add NEXT to the group. */
|
| 4410 |
|
|
curr = next;
|
| 4411 |
|
|
}
|
| 4412 |
|
|
|
| 4413 |
|
|
/* OK, the size from the start to the start of CURR is less
|
| 4414 |
|
|
than stub_group_size and thus can be handled by one stub
|
| 4415 |
|
|
section. (Or the head section is itself larger than
|
| 4416 |
|
|
stub_group_size, in which case we may be toast.)
|
| 4417 |
|
|
We should really be keeping track of the total size of
|
| 4418 |
|
|
stubs added here, as stubs contribute to the final output
|
| 4419 |
|
|
section size. */
|
| 4420 |
|
|
do
|
| 4421 |
|
|
{
|
| 4422 |
|
|
next = NEXT_SEC (head);
|
| 4423 |
|
|
/* Set up this stub group. */
|
| 4424 |
|
|
htab->stub_group[head->id].link_sec = curr;
|
| 4425 |
|
|
}
|
| 4426 |
|
|
while (head != curr && (head = next) != NULL);
|
| 4427 |
|
|
|
| 4428 |
|
|
/* But wait, there's more! Input sections up to stub_group_size
|
| 4429 |
|
|
bytes after the stub section can be handled by it too. */
|
| 4430 |
|
|
if (!stubs_always_after_branch)
|
| 4431 |
|
|
{
|
| 4432 |
|
|
stub_group_start = curr->output_offset + curr->size;
|
| 4433 |
|
|
|
| 4434 |
|
|
while (next != NULL)
|
| 4435 |
|
|
{
|
| 4436 |
|
|
end_of_next = next->output_offset + next->size;
|
| 4437 |
|
|
if (end_of_next - stub_group_start >= stub_group_size)
|
| 4438 |
|
|
/* End of NEXT is too far from stubs, so stop. */
|
| 4439 |
|
|
break;
|
| 4440 |
|
|
/* Add NEXT to the stub group. */
|
| 4441 |
|
|
head = next;
|
| 4442 |
|
|
next = NEXT_SEC (head);
|
| 4443 |
|
|
htab->stub_group[head->id].link_sec = curr;
|
| 4444 |
|
|
}
|
| 4445 |
|
|
}
|
| 4446 |
|
|
head = next;
|
| 4447 |
|
|
}
|
| 4448 |
|
|
}
|
| 4449 |
|
|
while (list++ != htab->input_list + htab->top_index);
|
| 4450 |
|
|
|
| 4451 |
|
|
free (htab->input_list);
|
| 4452 |
|
|
#undef PREV_SEC
|
| 4453 |
|
|
#undef NEXT_SEC
|
| 4454 |
|
|
}
|
| 4455 |
|
|
|
| 4456 |
|
|
/* Comparison function for sorting/searching relocations relating to Cortex-A8
|
| 4457 |
|
|
erratum fix. */
|
| 4458 |
|
|
|
| 4459 |
|
|
static int
|
| 4460 |
|
|
a8_reloc_compare (const void *a, const void *b)
|
| 4461 |
|
|
{
|
| 4462 |
|
|
const struct a8_erratum_reloc *ra = (const struct a8_erratum_reloc *) a;
|
| 4463 |
|
|
const struct a8_erratum_reloc *rb = (const struct a8_erratum_reloc *) b;
|
| 4464 |
|
|
|
| 4465 |
|
|
if (ra->from < rb->from)
|
| 4466 |
|
|
return -1;
|
| 4467 |
|
|
else if (ra->from > rb->from)
|
| 4468 |
|
|
return 1;
|
| 4469 |
|
|
else
|
| 4470 |
|
|
return 0;
|
| 4471 |
|
|
}
|
| 4472 |
|
|
|
| 4473 |
|
|
static struct elf_link_hash_entry *find_thumb_glue (struct bfd_link_info *,
|
| 4474 |
|
|
const char *, char **);
|
| 4475 |
|
|
|
| 4476 |
|
|
/* Helper function to scan code for sequences which might trigger the Cortex-A8
|
| 4477 |
|
|
branch/TLB erratum. Fill in the table described by A8_FIXES_P,
|
| 4478 |
|
|
NUM_A8_FIXES_P, A8_FIX_TABLE_SIZE_P. Returns true if an error occurs, false
|
| 4479 |
|
|
otherwise. */
|
| 4480 |
|
|
|
| 4481 |
|
|
static bfd_boolean
|
| 4482 |
|
|
cortex_a8_erratum_scan (bfd *input_bfd,
|
| 4483 |
|
|
struct bfd_link_info *info,
|
| 4484 |
|
|
struct a8_erratum_fix **a8_fixes_p,
|
| 4485 |
|
|
unsigned int *num_a8_fixes_p,
|
| 4486 |
|
|
unsigned int *a8_fix_table_size_p,
|
| 4487 |
|
|
struct a8_erratum_reloc *a8_relocs,
|
| 4488 |
|
|
unsigned int num_a8_relocs,
|
| 4489 |
|
|
unsigned prev_num_a8_fixes,
|
| 4490 |
|
|
bfd_boolean *stub_changed_p)
|
| 4491 |
|
|
{
|
| 4492 |
|
|
asection *section;
|
| 4493 |
|
|
struct elf32_arm_link_hash_table *htab = elf32_arm_hash_table (info);
|
| 4494 |
|
|
struct a8_erratum_fix *a8_fixes = *a8_fixes_p;
|
| 4495 |
|
|
unsigned int num_a8_fixes = *num_a8_fixes_p;
|
| 4496 |
|
|
unsigned int a8_fix_table_size = *a8_fix_table_size_p;
|
| 4497 |
|
|
|
| 4498 |
|
|
if (htab == NULL)
|
| 4499 |
|
|
return FALSE;
|
| 4500 |
|
|
|
| 4501 |
|
|
for (section = input_bfd->sections;
|
| 4502 |
|
|
section != NULL;
|
| 4503 |
|
|
section = section->next)
|
| 4504 |
|
|
{
|
| 4505 |
|
|
bfd_byte *contents = NULL;
|
| 4506 |
|
|
struct _arm_elf_section_data *sec_data;
|
| 4507 |
|
|
unsigned int span;
|
| 4508 |
|
|
bfd_vma base_vma;
|
| 4509 |
|
|
|
| 4510 |
|
|
if (elf_section_type (section) != SHT_PROGBITS
|
| 4511 |
|
|
|| (elf_section_flags (section) & SHF_EXECINSTR) == 0
|
| 4512 |
|
|
|| (section->flags & SEC_EXCLUDE) != 0
|
| 4513 |
|
|
|| (section->sec_info_type == ELF_INFO_TYPE_JUST_SYMS)
|
| 4514 |
|
|
|| (section->output_section == bfd_abs_section_ptr))
|
| 4515 |
|
|
continue;
|
| 4516 |
|
|
|
| 4517 |
|
|
base_vma = section->output_section->vma + section->output_offset;
|
| 4518 |
|
|
|
| 4519 |
|
|
if (elf_section_data (section)->this_hdr.contents != NULL)
|
| 4520 |
|
|
contents = elf_section_data (section)->this_hdr.contents;
|
| 4521 |
|
|
else if (! bfd_malloc_and_get_section (input_bfd, section, &contents))
|
| 4522 |
|
|
return TRUE;
|
| 4523 |
|
|
|
| 4524 |
|
|
sec_data = elf32_arm_section_data (section);
|
| 4525 |
|
|
|
| 4526 |
|
|
for (span = 0; span < sec_data->mapcount; span++)
|
| 4527 |
|
|
{
|
| 4528 |
|
|
unsigned int span_start = sec_data->map[span].vma;
|
| 4529 |
|
|
unsigned int span_end = (span == sec_data->mapcount - 1)
|
| 4530 |
|
|
? section->size : sec_data->map[span + 1].vma;
|
| 4531 |
|
|
unsigned int i;
|
| 4532 |
|
|
char span_type = sec_data->map[span].type;
|
| 4533 |
|
|
bfd_boolean last_was_32bit = FALSE, last_was_branch = FALSE;
|
| 4534 |
|
|
|
| 4535 |
|
|
if (span_type != 't')
|
| 4536 |
|
|
continue;
|
| 4537 |
|
|
|
| 4538 |
|
|
/* Span is entirely within a single 4KB region: skip scanning. */
|
| 4539 |
|
|
if (((base_vma + span_start) & ~0xfff)
|
| 4540 |
|
|
== ((base_vma + span_end) & ~0xfff))
|
| 4541 |
|
|
continue;
|
| 4542 |
|
|
|
| 4543 |
|
|
/* Scan for 32-bit Thumb-2 branches which span two 4K regions, where:
|
| 4544 |
|
|
|
| 4545 |
|
|
* The opcode is BLX.W, BL.W, B.W, Bcc.W
|
| 4546 |
|
|
* The branch target is in the same 4KB region as the
|
| 4547 |
|
|
first half of the branch.
|
| 4548 |
|
|
* The instruction before the branch is a 32-bit
|
| 4549 |
|
|
length non-branch instruction. */
|
| 4550 |
|
|
for (i = span_start; i < span_end;)
|
| 4551 |
|
|
{
|
| 4552 |
|
|
unsigned int insn = bfd_getl16 (&contents[i]);
|
| 4553 |
|
|
bfd_boolean insn_32bit = FALSE, is_blx = FALSE, is_b = FALSE;
|
| 4554 |
|
|
bfd_boolean is_bl = FALSE, is_bcc = FALSE, is_32bit_branch;
|
| 4555 |
|
|
|
| 4556 |
|
|
if ((insn & 0xe000) == 0xe000 && (insn & 0x1800) != 0x0000)
|
| 4557 |
|
|
insn_32bit = TRUE;
|
| 4558 |
|
|
|
| 4559 |
|
|
if (insn_32bit)
|
| 4560 |
|
|
{
|
| 4561 |
|
|
/* Load the rest of the insn (in manual-friendly order). */
|
| 4562 |
|
|
insn = (insn << 16) | bfd_getl16 (&contents[i + 2]);
|
| 4563 |
|
|
|
| 4564 |
|
|
/* Encoding T4: B<c>.W. */
|
| 4565 |
|
|
is_b = (insn & 0xf800d000) == 0xf0009000;
|
| 4566 |
|
|
/* Encoding T1: BL<c>.W. */
|
| 4567 |
|
|
is_bl = (insn & 0xf800d000) == 0xf000d000;
|
| 4568 |
|
|
/* Encoding T2: BLX<c>.W. */
|
| 4569 |
|
|
is_blx = (insn & 0xf800d000) == 0xf000c000;
|
| 4570 |
|
|
/* Encoding T3: B<c>.W (not permitted in IT block). */
|
| 4571 |
|
|
is_bcc = (insn & 0xf800d000) == 0xf0008000
|
| 4572 |
|
|
&& (insn & 0x07f00000) != 0x03800000;
|
| 4573 |
|
|
}
|
| 4574 |
|
|
|
| 4575 |
|
|
is_32bit_branch = is_b || is_bl || is_blx || is_bcc;
|
| 4576 |
|
|
|
| 4577 |
|
|
if (((base_vma + i) & 0xfff) == 0xffe
|
| 4578 |
|
|
&& insn_32bit
|
| 4579 |
|
|
&& is_32bit_branch
|
| 4580 |
|
|
&& last_was_32bit
|
| 4581 |
|
|
&& ! last_was_branch)
|
| 4582 |
|
|
{
|
| 4583 |
|
|
bfd_signed_vma offset = 0;
|
| 4584 |
|
|
bfd_boolean force_target_arm = FALSE;
|
| 4585 |
|
|
bfd_boolean force_target_thumb = FALSE;
|
| 4586 |
|
|
bfd_vma target;
|
| 4587 |
|
|
enum elf32_arm_stub_type stub_type = arm_stub_none;
|
| 4588 |
|
|
struct a8_erratum_reloc key, *found;
|
| 4589 |
|
|
bfd_boolean use_plt = FALSE;
|
| 4590 |
|
|
|
| 4591 |
|
|
key.from = base_vma + i;
|
| 4592 |
|
|
found = (struct a8_erratum_reloc *)
|
| 4593 |
|
|
bsearch (&key, a8_relocs, num_a8_relocs,
|
| 4594 |
|
|
sizeof (struct a8_erratum_reloc),
|
| 4595 |
|
|
&a8_reloc_compare);
|
| 4596 |
|
|
|
| 4597 |
|
|
if (found)
|
| 4598 |
|
|
{
|
| 4599 |
|
|
char *error_message = NULL;
|
| 4600 |
|
|
struct elf_link_hash_entry *entry;
|
| 4601 |
|
|
|
| 4602 |
|
|
/* We don't care about the error returned from this
|
| 4603 |
|
|
function, only if there is glue or not. */
|
| 4604 |
|
|
entry = find_thumb_glue (info, found->sym_name,
|
| 4605 |
|
|
&error_message);
|
| 4606 |
|
|
|
| 4607 |
|
|
if (entry)
|
| 4608 |
|
|
found->non_a8_stub = TRUE;
|
| 4609 |
|
|
|
| 4610 |
|
|
/* Keep a simpler condition, for the sake of clarity. */
|
| 4611 |
|
|
if (htab->root.splt != NULL && found->hash != NULL
|
| 4612 |
|
|
&& found->hash->root.plt.offset != (bfd_vma) -1)
|
| 4613 |
|
|
use_plt = TRUE;
|
| 4614 |
|
|
|
| 4615 |
|
|
if (found->r_type == R_ARM_THM_CALL)
|
| 4616 |
|
|
{
|
| 4617 |
|
|
if (found->branch_type == ST_BRANCH_TO_ARM
|
| 4618 |
|
|
|| use_plt)
|
| 4619 |
|
|
force_target_arm = TRUE;
|
| 4620 |
|
|
else
|
| 4621 |
|
|
force_target_thumb = TRUE;
|
| 4622 |
|
|
}
|
| 4623 |
|
|
}
|
| 4624 |
|
|
|
| 4625 |
|
|
/* Check if we have an offending branch instruction. */
|
| 4626 |
|
|
|
| 4627 |
|
|
if (found && found->non_a8_stub)
|
| 4628 |
|
|
/* We've already made a stub for this instruction, e.g.
|
| 4629 |
|
|
it's a long branch or a Thumb->ARM stub. Assume that
|
| 4630 |
|
|
stub will suffice to work around the A8 erratum (see
|
| 4631 |
|
|
setting of always_after_branch above). */
|
| 4632 |
|
|
;
|
| 4633 |
|
|
else if (is_bcc)
|
| 4634 |
|
|
{
|
| 4635 |
|
|
offset = (insn & 0x7ff) << 1;
|
| 4636 |
|
|
offset |= (insn & 0x3f0000) >> 4;
|
| 4637 |
|
|
offset |= (insn & 0x2000) ? 0x40000 : 0;
|
| 4638 |
|
|
offset |= (insn & 0x800) ? 0x80000 : 0;
|
| 4639 |
|
|
offset |= (insn & 0x4000000) ? 0x100000 : 0;
|
| 4640 |
|
|
if (offset & 0x100000)
|
| 4641 |
|
|
offset |= ~ ((bfd_signed_vma) 0xfffff);
|
| 4642 |
|
|
stub_type = arm_stub_a8_veneer_b_cond;
|
| 4643 |
|
|
}
|
| 4644 |
|
|
else if (is_b || is_bl || is_blx)
|
| 4645 |
|
|
{
|
| 4646 |
|
|
int s = (insn & 0x4000000) != 0;
|
| 4647 |
|
|
int j1 = (insn & 0x2000) != 0;
|
| 4648 |
|
|
int j2 = (insn & 0x800) != 0;
|
| 4649 |
|
|
int i1 = !(j1 ^ s);
|
| 4650 |
|
|
int i2 = !(j2 ^ s);
|
| 4651 |
|
|
|
| 4652 |
|
|
offset = (insn & 0x7ff) << 1;
|
| 4653 |
|
|
offset |= (insn & 0x3ff0000) >> 4;
|
| 4654 |
|
|
offset |= i2 << 22;
|
| 4655 |
|
|
offset |= i1 << 23;
|
| 4656 |
|
|
offset |= s << 24;
|
| 4657 |
|
|
if (offset & 0x1000000)
|
| 4658 |
|
|
offset |= ~ ((bfd_signed_vma) 0xffffff);
|
| 4659 |
|
|
|
| 4660 |
|
|
if (is_blx)
|
| 4661 |
|
|
offset &= ~ ((bfd_signed_vma) 3);
|
| 4662 |
|
|
|
| 4663 |
|
|
stub_type = is_blx ? arm_stub_a8_veneer_blx :
|
| 4664 |
|
|
is_bl ? arm_stub_a8_veneer_bl : arm_stub_a8_veneer_b;
|
| 4665 |
|
|
}
|
| 4666 |
|
|
|
| 4667 |
|
|
if (stub_type != arm_stub_none)
|
| 4668 |
|
|
{
|
| 4669 |
|
|
bfd_vma pc_for_insn = base_vma + i + 4;
|
| 4670 |
|
|
|
| 4671 |
|
|
/* The original instruction is a BL, but the target is
|
| 4672 |
|
|
an ARM instruction. If we were not making a stub,
|
| 4673 |
|
|
the BL would have been converted to a BLX. Use the
|
| 4674 |
|
|
BLX stub instead in that case. */
|
| 4675 |
|
|
if (htab->use_blx && force_target_arm
|
| 4676 |
|
|
&& stub_type == arm_stub_a8_veneer_bl)
|
| 4677 |
|
|
{
|
| 4678 |
|
|
stub_type = arm_stub_a8_veneer_blx;
|
| 4679 |
|
|
is_blx = TRUE;
|
| 4680 |
|
|
is_bl = FALSE;
|
| 4681 |
|
|
}
|
| 4682 |
|
|
/* Conversely, if the original instruction was
|
| 4683 |
|
|
BLX but the target is Thumb mode, use the BL
|
| 4684 |
|
|
stub. */
|
| 4685 |
|
|
else if (force_target_thumb
|
| 4686 |
|
|
&& stub_type == arm_stub_a8_veneer_blx)
|
| 4687 |
|
|
{
|
| 4688 |
|
|
stub_type = arm_stub_a8_veneer_bl;
|
| 4689 |
|
|
is_blx = FALSE;
|
| 4690 |
|
|
is_bl = TRUE;
|
| 4691 |
|
|
}
|
| 4692 |
|
|
|
| 4693 |
|
|
if (is_blx)
|
| 4694 |
|
|
pc_for_insn &= ~ ((bfd_vma) 3);
|
| 4695 |
|
|
|
| 4696 |
|
|
/* If we found a relocation, use the proper destination,
|
| 4697 |
|
|
not the offset in the (unrelocated) instruction.
|
| 4698 |
|
|
Note this is always done if we switched the stub type
|
| 4699 |
|
|
above. */
|
| 4700 |
|
|
if (found)
|
| 4701 |
|
|
offset =
|
| 4702 |
|
|
(bfd_signed_vma) (found->destination - pc_for_insn);
|
| 4703 |
|
|
|
| 4704 |
|
|
/* If the stub will use a Thumb-mode branch to a
|
| 4705 |
|
|
PLT target, redirect it to the preceding Thumb
|
| 4706 |
|
|
entry point. */
|
| 4707 |
|
|
if (stub_type != arm_stub_a8_veneer_blx && use_plt)
|
| 4708 |
|
|
offset -= PLT_THUMB_STUB_SIZE;
|
| 4709 |
|
|
|
| 4710 |
|
|
target = pc_for_insn + offset;
|
| 4711 |
|
|
|
| 4712 |
|
|
/* The BLX stub is ARM-mode code. Adjust the offset to
|
| 4713 |
|
|
take the different PC value (+8 instead of +4) into
|
| 4714 |
|
|
account. */
|
| 4715 |
|
|
if (stub_type == arm_stub_a8_veneer_blx)
|
| 4716 |
|
|
offset += 4;
|
| 4717 |
|
|
|
| 4718 |
|
|
if (((base_vma + i) & ~0xfff) == (target & ~0xfff))
|
| 4719 |
|
|
{
|
| 4720 |
|
|
char *stub_name = NULL;
|
| 4721 |
|
|
|
| 4722 |
|
|
if (num_a8_fixes == a8_fix_table_size)
|
| 4723 |
|
|
{
|
| 4724 |
|
|
a8_fix_table_size *= 2;
|
| 4725 |
|
|
a8_fixes = (struct a8_erratum_fix *)
|
| 4726 |
|
|
bfd_realloc (a8_fixes,
|
| 4727 |
|
|
sizeof (struct a8_erratum_fix)
|
| 4728 |
|
|
* a8_fix_table_size);
|
| 4729 |
|
|
}
|
| 4730 |
|
|
|
| 4731 |
|
|
if (num_a8_fixes < prev_num_a8_fixes)
|
| 4732 |
|
|
{
|
| 4733 |
|
|
/* If we're doing a subsequent scan,
|
| 4734 |
|
|
check if we've found the same fix as
|
| 4735 |
|
|
before, and try and reuse the stub
|
| 4736 |
|
|
name. */
|
| 4737 |
|
|
stub_name = a8_fixes[num_a8_fixes].stub_name;
|
| 4738 |
|
|
if ((a8_fixes[num_a8_fixes].section != section)
|
| 4739 |
|
|
|| (a8_fixes[num_a8_fixes].offset != i))
|
| 4740 |
|
|
{
|
| 4741 |
|
|
free (stub_name);
|
| 4742 |
|
|
stub_name = NULL;
|
| 4743 |
|
|
*stub_changed_p = TRUE;
|
| 4744 |
|
|
}
|
| 4745 |
|
|
}
|
| 4746 |
|
|
|
| 4747 |
|
|
if (!stub_name)
|
| 4748 |
|
|
{
|
| 4749 |
|
|
stub_name = (char *) bfd_malloc (8 + 1 + 8 + 1);
|
| 4750 |
|
|
if (stub_name != NULL)
|
| 4751 |
|
|
sprintf (stub_name, "%x:%x", section->id, i);
|
| 4752 |
|
|
}
|
| 4753 |
|
|
|
| 4754 |
|
|
a8_fixes[num_a8_fixes].input_bfd = input_bfd;
|
| 4755 |
|
|
a8_fixes[num_a8_fixes].section = section;
|
| 4756 |
|
|
a8_fixes[num_a8_fixes].offset = i;
|
| 4757 |
|
|
a8_fixes[num_a8_fixes].addend = offset;
|
| 4758 |
|
|
a8_fixes[num_a8_fixes].orig_insn = insn;
|
| 4759 |
|
|
a8_fixes[num_a8_fixes].stub_name = stub_name;
|
| 4760 |
|
|
a8_fixes[num_a8_fixes].stub_type = stub_type;
|
| 4761 |
|
|
a8_fixes[num_a8_fixes].branch_type =
|
| 4762 |
|
|
is_blx ? ST_BRANCH_TO_ARM : ST_BRANCH_TO_THUMB;
|
| 4763 |
|
|
|
| 4764 |
|
|
num_a8_fixes++;
|
| 4765 |
|
|
}
|
| 4766 |
|
|
}
|
| 4767 |
|
|
}
|
| 4768 |
|
|
|
| 4769 |
|
|
i += insn_32bit ? 4 : 2;
|
| 4770 |
|
|
last_was_32bit = insn_32bit;
|
| 4771 |
|
|
last_was_branch = is_32bit_branch;
|
| 4772 |
|
|
}
|
| 4773 |
|
|
}
|
| 4774 |
|
|
|
| 4775 |
|
|
if (elf_section_data (section)->this_hdr.contents == NULL)
|
| 4776 |
|
|
free (contents);
|
| 4777 |
|
|
}
|
| 4778 |
|
|
|
| 4779 |
|
|
*a8_fixes_p = a8_fixes;
|
| 4780 |
|
|
*num_a8_fixes_p = num_a8_fixes;
|
| 4781 |
|
|
*a8_fix_table_size_p = a8_fix_table_size;
|
| 4782 |
|
|
|
| 4783 |
|
|
return FALSE;
|
| 4784 |
|
|
}
|
| 4785 |
|
|
|
| 4786 |
|
|
/* Determine and set the size of the stub section for a final link.
|
| 4787 |
|
|
|
| 4788 |
|
|
The basic idea here is to examine all the relocations looking for
|
| 4789 |
|
|
PC-relative calls to a target that is unreachable with a "bl"
|
| 4790 |
|
|
instruction. */
|
| 4791 |
|
|
|
| 4792 |
|
|
bfd_boolean
|
| 4793 |
|
|
elf32_arm_size_stubs (bfd *output_bfd,
|
| 4794 |
|
|
bfd *stub_bfd,
|
| 4795 |
|
|
struct bfd_link_info *info,
|
| 4796 |
|
|
bfd_signed_vma group_size,
|
| 4797 |
|
|
asection * (*add_stub_section) (const char *, asection *),
|
| 4798 |
|
|
void (*layout_sections_again) (void))
|
| 4799 |
|
|
{
|
| 4800 |
|
|
bfd_size_type stub_group_size;
|
| 4801 |
|
|
bfd_boolean stubs_always_after_branch;
|
| 4802 |
|
|
struct elf32_arm_link_hash_table *htab = elf32_arm_hash_table (info);
|
| 4803 |
|
|
struct a8_erratum_fix *a8_fixes = NULL;
|
| 4804 |
|
|
unsigned int num_a8_fixes = 0, a8_fix_table_size = 10;
|
| 4805 |
|
|
struct a8_erratum_reloc *a8_relocs = NULL;
|
| 4806 |
|
|
unsigned int num_a8_relocs = 0, a8_reloc_table_size = 10, i;
|
| 4807 |
|
|
|
| 4808 |
|
|
if (htab == NULL)
|
| 4809 |
|
|
return FALSE;
|
| 4810 |
|
|
|
| 4811 |
|
|
if (htab->fix_cortex_a8)
|
| 4812 |
|
|
{
|
| 4813 |
|
|
a8_fixes = (struct a8_erratum_fix *)
|
| 4814 |
|
|
bfd_zmalloc (sizeof (struct a8_erratum_fix) * a8_fix_table_size);
|
| 4815 |
|
|
a8_relocs = (struct a8_erratum_reloc *)
|
| 4816 |
|
|
bfd_zmalloc (sizeof (struct a8_erratum_reloc) * a8_reloc_table_size);
|
| 4817 |
|
|
}
|
| 4818 |
|
|
|
| 4819 |
|
|
/* Propagate mach to stub bfd, because it may not have been
|
| 4820 |
|
|
finalized when we created stub_bfd. */
|
| 4821 |
|
|
bfd_set_arch_mach (stub_bfd, bfd_get_arch (output_bfd),
|
| 4822 |
|
|
bfd_get_mach (output_bfd));
|
| 4823 |
|
|
|
| 4824 |
|
|
/* Stash our params away. */
|
| 4825 |
|
|
htab->stub_bfd = stub_bfd;
|
| 4826 |
|
|
htab->add_stub_section = add_stub_section;
|
| 4827 |
|
|
htab->layout_sections_again = layout_sections_again;
|
| 4828 |
|
|
stubs_always_after_branch = group_size < 0;
|
| 4829 |
|
|
|
| 4830 |
|
|
/* The Cortex-A8 erratum fix depends on stubs not being in the same 4K page
|
| 4831 |
|
|
as the first half of a 32-bit branch straddling two 4K pages. This is a
|
| 4832 |
|
|
crude way of enforcing that. */
|
| 4833 |
|
|
if (htab->fix_cortex_a8)
|
| 4834 |
|
|
stubs_always_after_branch = 1;
|
| 4835 |
|
|
|
| 4836 |
|
|
if (group_size < 0)
|
| 4837 |
|
|
stub_group_size = -group_size;
|
| 4838 |
|
|
else
|
| 4839 |
|
|
stub_group_size = group_size;
|
| 4840 |
|
|
|
| 4841 |
|
|
if (stub_group_size == 1)
|
| 4842 |
|
|
{
|
| 4843 |
|
|
/* Default values. */
|
| 4844 |
|
|
/* Thumb branch range is +-4MB has to be used as the default
|
| 4845 |
|
|
maximum size (a given section can contain both ARM and Thumb
|
| 4846 |
|
|
code, so the worst case has to be taken into account).
|
| 4847 |
|
|
|
| 4848 |
|
|
This value is 24K less than that, which allows for 2025
|
| 4849 |
|
|
12-byte stubs. If we exceed that, then we will fail to link.
|
| 4850 |
|
|
The user will have to relink with an explicit group size
|
| 4851 |
|
|
option. */
|
| 4852 |
|
|
stub_group_size = 4170000;
|
| 4853 |
|
|
}
|
| 4854 |
|
|
|
| 4855 |
|
|
group_sections (htab, stub_group_size, stubs_always_after_branch);
|
| 4856 |
|
|
|
| 4857 |
|
|
/* If we're applying the cortex A8 fix, we need to determine the
|
| 4858 |
|
|
program header size now, because we cannot change it later --
|
| 4859 |
|
|
that could alter section placements. Notice the A8 erratum fix
|
| 4860 |
|
|
ends up requiring the section addresses to remain unchanged
|
| 4861 |
|
|
modulo the page size. That's something we cannot represent
|
| 4862 |
|
|
inside BFD, and we don't want to force the section alignment to
|
| 4863 |
|
|
be the page size. */
|
| 4864 |
|
|
if (htab->fix_cortex_a8)
|
| 4865 |
|
|
(*htab->layout_sections_again) ();
|
| 4866 |
|
|
|
| 4867 |
|
|
while (1)
|
| 4868 |
|
|
{
|
| 4869 |
|
|
bfd *input_bfd;
|
| 4870 |
|
|
unsigned int bfd_indx;
|
| 4871 |
|
|
asection *stub_sec;
|
| 4872 |
|
|
bfd_boolean stub_changed = FALSE;
|
| 4873 |
|
|
unsigned prev_num_a8_fixes = num_a8_fixes;
|
| 4874 |
|
|
|
| 4875 |
|
|
num_a8_fixes = 0;
|
| 4876 |
|
|
for (input_bfd = info->input_bfds, bfd_indx = 0;
|
| 4877 |
|
|
input_bfd != NULL;
|
| 4878 |
|
|
input_bfd = input_bfd->link_next, bfd_indx++)
|
| 4879 |
|
|
{
|
| 4880 |
|
|
Elf_Internal_Shdr *symtab_hdr;
|
| 4881 |
|
|
asection *section;
|
| 4882 |
|
|
Elf_Internal_Sym *local_syms = NULL;
|
| 4883 |
|
|
|
| 4884 |
|
|
num_a8_relocs = 0;
|
| 4885 |
|
|
|
| 4886 |
|
|
/* We'll need the symbol table in a second. */
|
| 4887 |
|
|
symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
|
| 4888 |
|
|
if (symtab_hdr->sh_info == 0)
|
| 4889 |
|
|
continue;
|
| 4890 |
|
|
|
| 4891 |
|
|
/* Walk over each section attached to the input bfd. */
|
| 4892 |
|
|
for (section = input_bfd->sections;
|
| 4893 |
|
|
section != NULL;
|
| 4894 |
|
|
section = section->next)
|
| 4895 |
|
|
{
|
| 4896 |
|
|
Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
|
| 4897 |
|
|
|
| 4898 |
|
|
/* If there aren't any relocs, then there's nothing more
|
| 4899 |
|
|
to do. */
|
| 4900 |
|
|
if ((section->flags & SEC_RELOC) == 0
|
| 4901 |
|
|
|| section->reloc_count == 0
|
| 4902 |
|
|
|| (section->flags & SEC_CODE) == 0)
|
| 4903 |
|
|
continue;
|
| 4904 |
|
|
|
| 4905 |
|
|
/* If this section is a link-once section that will be
|
| 4906 |
|
|
discarded, then don't create any stubs. */
|
| 4907 |
|
|
if (section->output_section == NULL
|
| 4908 |
|
|
|| section->output_section->owner != output_bfd)
|
| 4909 |
|
|
continue;
|
| 4910 |
|
|
|
| 4911 |
|
|
/* Get the relocs. */
|
| 4912 |
|
|
internal_relocs
|
| 4913 |
|
|
= _bfd_elf_link_read_relocs (input_bfd, section, NULL,
|
| 4914 |
|
|
NULL, info->keep_memory);
|
| 4915 |
|
|
if (internal_relocs == NULL)
|
| 4916 |
|
|
goto error_ret_free_local;
|
| 4917 |
|
|
|
| 4918 |
|
|
/* Now examine each relocation. */
|
| 4919 |
|
|
irela = internal_relocs;
|
| 4920 |
|
|
irelaend = irela + section->reloc_count;
|
| 4921 |
|
|
for (; irela < irelaend; irela++)
|
| 4922 |
|
|
{
|
| 4923 |
|
|
unsigned int r_type, r_indx;
|
| 4924 |
|
|
enum elf32_arm_stub_type stub_type;
|
| 4925 |
|
|
struct elf32_arm_stub_hash_entry *stub_entry;
|
| 4926 |
|
|
asection *sym_sec;
|
| 4927 |
|
|
bfd_vma sym_value;
|
| 4928 |
|
|
bfd_vma destination;
|
| 4929 |
|
|
struct elf32_arm_link_hash_entry *hash;
|
| 4930 |
|
|
const char *sym_name;
|
| 4931 |
|
|
char *stub_name;
|
| 4932 |
|
|
const asection *id_sec;
|
| 4933 |
|
|
unsigned char st_type;
|
| 4934 |
|
|
enum arm_st_branch_type branch_type;
|
| 4935 |
|
|
bfd_boolean created_stub = FALSE;
|
| 4936 |
|
|
|
| 4937 |
|
|
r_type = ELF32_R_TYPE (irela->r_info);
|
| 4938 |
|
|
r_indx = ELF32_R_SYM (irela->r_info);
|
| 4939 |
|
|
|
| 4940 |
|
|
if (r_type >= (unsigned int) R_ARM_max)
|
| 4941 |
|
|
{
|
| 4942 |
|
|
bfd_set_error (bfd_error_bad_value);
|
| 4943 |
|
|
error_ret_free_internal:
|
| 4944 |
|
|
if (elf_section_data (section)->relocs == NULL)
|
| 4945 |
|
|
free (internal_relocs);
|
| 4946 |
|
|
goto error_ret_free_local;
|
| 4947 |
|
|
}
|
| 4948 |
|
|
|
| 4949 |
|
|
hash = NULL;
|
| 4950 |
|
|
if (r_indx >= symtab_hdr->sh_info)
|
| 4951 |
|
|
hash = elf32_arm_hash_entry
|
| 4952 |
|
|
(elf_sym_hashes (input_bfd)
|
| 4953 |
|
|
[r_indx - symtab_hdr->sh_info]);
|
| 4954 |
|
|
|
| 4955 |
|
|
/* Only look for stubs on branch instructions, or
|
| 4956 |
|
|
non-relaxed TLSCALL */
|
| 4957 |
|
|
if ((r_type != (unsigned int) R_ARM_CALL)
|
| 4958 |
|
|
&& (r_type != (unsigned int) R_ARM_THM_CALL)
|
| 4959 |
|
|
&& (r_type != (unsigned int) R_ARM_JUMP24)
|
| 4960 |
|
|
&& (r_type != (unsigned int) R_ARM_THM_JUMP19)
|
| 4961 |
|
|
&& (r_type != (unsigned int) R_ARM_THM_XPC22)
|
| 4962 |
|
|
&& (r_type != (unsigned int) R_ARM_THM_JUMP24)
|
| 4963 |
|
|
&& (r_type != (unsigned int) R_ARM_PLT32)
|
| 4964 |
|
|
&& !((r_type == (unsigned int) R_ARM_TLS_CALL
|
| 4965 |
|
|
|| r_type == (unsigned int) R_ARM_THM_TLS_CALL)
|
| 4966 |
|
|
&& r_type == elf32_arm_tls_transition
|
| 4967 |
|
|
(info, r_type, &hash->root)
|
| 4968 |
|
|
&& ((hash ? hash->tls_type
|
| 4969 |
|
|
: (elf32_arm_local_got_tls_type
|
| 4970 |
|
|
(input_bfd)[r_indx]))
|
| 4971 |
|
|
& GOT_TLS_GDESC) != 0))
|
| 4972 |
|
|
continue;
|
| 4973 |
|
|
|
| 4974 |
|
|
/* Now determine the call target, its name, value,
|
| 4975 |
|
|
section. */
|
| 4976 |
|
|
sym_sec = NULL;
|
| 4977 |
|
|
sym_value = 0;
|
| 4978 |
|
|
destination = 0;
|
| 4979 |
|
|
sym_name = NULL;
|
| 4980 |
|
|
|
| 4981 |
|
|
if (r_type == (unsigned int) R_ARM_TLS_CALL
|
| 4982 |
|
|
|| r_type == (unsigned int) R_ARM_THM_TLS_CALL)
|
| 4983 |
|
|
{
|
| 4984 |
|
|
/* A non-relaxed TLS call. The target is the
|
| 4985 |
|
|
plt-resident trampoline and nothing to do
|
| 4986 |
|
|
with the symbol. */
|
| 4987 |
|
|
BFD_ASSERT (htab->tls_trampoline > 0);
|
| 4988 |
|
|
sym_sec = htab->root.splt;
|
| 4989 |
|
|
sym_value = htab->tls_trampoline;
|
| 4990 |
|
|
hash = 0;
|
| 4991 |
|
|
st_type = STT_FUNC;
|
| 4992 |
|
|
branch_type = ST_BRANCH_TO_ARM;
|
| 4993 |
|
|
}
|
| 4994 |
|
|
else if (!hash)
|
| 4995 |
|
|
{
|
| 4996 |
|
|
/* It's a local symbol. */
|
| 4997 |
|
|
Elf_Internal_Sym *sym;
|
| 4998 |
|
|
|
| 4999 |
|
|
if (local_syms == NULL)
|
| 5000 |
|
|
{
|
| 5001 |
|
|
local_syms
|
| 5002 |
|
|
= (Elf_Internal_Sym *) symtab_hdr->contents;
|
| 5003 |
|
|
if (local_syms == NULL)
|
| 5004 |
|
|
local_syms
|
| 5005 |
|
|
= bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
|
| 5006 |
|
|
symtab_hdr->sh_info, 0,
|
| 5007 |
|
|
NULL, NULL, NULL);
|
| 5008 |
|
|
if (local_syms == NULL)
|
| 5009 |
|
|
goto error_ret_free_internal;
|
| 5010 |
|
|
}
|
| 5011 |
|
|
|
| 5012 |
|
|
sym = local_syms + r_indx;
|
| 5013 |
|
|
if (sym->st_shndx == SHN_UNDEF)
|
| 5014 |
|
|
sym_sec = bfd_und_section_ptr;
|
| 5015 |
|
|
else if (sym->st_shndx == SHN_ABS)
|
| 5016 |
|
|
sym_sec = bfd_abs_section_ptr;
|
| 5017 |
|
|
else if (sym->st_shndx == SHN_COMMON)
|
| 5018 |
|
|
sym_sec = bfd_com_section_ptr;
|
| 5019 |
|
|
else
|
| 5020 |
|
|
sym_sec =
|
| 5021 |
|
|
bfd_section_from_elf_index (input_bfd, sym->st_shndx);
|
| 5022 |
|
|
|
| 5023 |
|
|
if (!sym_sec)
|
| 5024 |
|
|
/* This is an undefined symbol. It can never
|
| 5025 |
|
|
be resolved. */
|
| 5026 |
|
|
continue;
|
| 5027 |
|
|
|
| 5028 |
|
|
if (ELF_ST_TYPE (sym->st_info) != STT_SECTION)
|
| 5029 |
|
|
sym_value = sym->st_value;
|
| 5030 |
|
|
destination = (sym_value + irela->r_addend
|
| 5031 |
|
|
+ sym_sec->output_offset
|
| 5032 |
|
|
+ sym_sec->output_section->vma);
|
| 5033 |
|
|
st_type = ELF_ST_TYPE (sym->st_info);
|
| 5034 |
|
|
branch_type = ARM_SYM_BRANCH_TYPE (sym);
|
| 5035 |
|
|
sym_name
|
| 5036 |
|
|
= bfd_elf_string_from_elf_section (input_bfd,
|
| 5037 |
|
|
symtab_hdr->sh_link,
|
| 5038 |
|
|
sym->st_name);
|
| 5039 |
|
|
}
|
| 5040 |
|
|
else
|
| 5041 |
|
|
{
|
| 5042 |
|
|
/* It's an external symbol. */
|
| 5043 |
|
|
while (hash->root.root.type == bfd_link_hash_indirect
|
| 5044 |
|
|
|| hash->root.root.type == bfd_link_hash_warning)
|
| 5045 |
|
|
hash = ((struct elf32_arm_link_hash_entry *)
|
| 5046 |
|
|
hash->root.root.u.i.link);
|
| 5047 |
|
|
|
| 5048 |
|
|
if (hash->root.root.type == bfd_link_hash_defined
|
| 5049 |
|
|
|| hash->root.root.type == bfd_link_hash_defweak)
|
| 5050 |
|
|
{
|
| 5051 |
|
|
sym_sec = hash->root.root.u.def.section;
|
| 5052 |
|
|
sym_value = hash->root.root.u.def.value;
|
| 5053 |
|
|
|
| 5054 |
|
|
struct elf32_arm_link_hash_table *globals =
|
| 5055 |
|
|
elf32_arm_hash_table (info);
|
| 5056 |
|
|
|
| 5057 |
|
|
/* For a destination in a shared library,
|
| 5058 |
|
|
use the PLT stub as target address to
|
| 5059 |
|
|
decide whether a branch stub is
|
| 5060 |
|
|
needed. */
|
| 5061 |
|
|
if (globals != NULL
|
| 5062 |
|
|
&& globals->root.splt != NULL
|
| 5063 |
|
|
&& hash != NULL
|
| 5064 |
|
|
&& hash->root.plt.offset != (bfd_vma) -1)
|
| 5065 |
|
|
{
|
| 5066 |
|
|
sym_sec = globals->root.splt;
|
| 5067 |
|
|
sym_value = hash->root.plt.offset;
|
| 5068 |
|
|
if (sym_sec->output_section != NULL)
|
| 5069 |
|
|
destination = (sym_value
|
| 5070 |
|
|
+ sym_sec->output_offset
|
| 5071 |
|
|
+ sym_sec->output_section->vma);
|
| 5072 |
|
|
}
|
| 5073 |
|
|
else if (sym_sec->output_section != NULL)
|
| 5074 |
|
|
destination = (sym_value + irela->r_addend
|
| 5075 |
|
|
+ sym_sec->output_offset
|
| 5076 |
|
|
+ sym_sec->output_section->vma);
|
| 5077 |
|
|
}
|
| 5078 |
|
|
else if ((hash->root.root.type == bfd_link_hash_undefined)
|
| 5079 |
|
|
|| (hash->root.root.type == bfd_link_hash_undefweak))
|
| 5080 |
|
|
{
|
| 5081 |
|
|
/* For a shared library, use the PLT stub as
|
| 5082 |
|
|
target address to decide whether a long
|
| 5083 |
|
|
branch stub is needed.
|
| 5084 |
|
|
For absolute code, they cannot be handled. */
|
| 5085 |
|
|
struct elf32_arm_link_hash_table *globals =
|
| 5086 |
|
|
elf32_arm_hash_table (info);
|
| 5087 |
|
|
|
| 5088 |
|
|
if (globals != NULL
|
| 5089 |
|
|
&& globals->root.splt != NULL
|
| 5090 |
|
|
&& hash != NULL
|
| 5091 |
|
|
&& hash->root.plt.offset != (bfd_vma) -1)
|
| 5092 |
|
|
{
|
| 5093 |
|
|
sym_sec = globals->root.splt;
|
| 5094 |
|
|
sym_value = hash->root.plt.offset;
|
| 5095 |
|
|
if (sym_sec->output_section != NULL)
|
| 5096 |
|
|
destination = (sym_value
|
| 5097 |
|
|
+ sym_sec->output_offset
|
| 5098 |
|
|
+ sym_sec->output_section->vma);
|
| 5099 |
|
|
}
|
| 5100 |
|
|
else
|
| 5101 |
|
|
continue;
|
| 5102 |
|
|
}
|
| 5103 |
|
|
else
|
| 5104 |
|
|
{
|
| 5105 |
|
|
bfd_set_error (bfd_error_bad_value);
|
| 5106 |
|
|
goto error_ret_free_internal;
|
| 5107 |
|
|
}
|
| 5108 |
|
|
st_type = hash->root.type;
|
| 5109 |
|
|
branch_type = hash->root.target_internal;
|
| 5110 |
|
|
sym_name = hash->root.root.root.string;
|
| 5111 |
|
|
}
|
| 5112 |
|
|
|
| 5113 |
|
|
do
|
| 5114 |
|
|
{
|
| 5115 |
|
|
/* Determine what (if any) linker stub is needed. */
|
| 5116 |
|
|
stub_type = arm_type_of_stub (info, section, irela,
|
| 5117 |
|
|
st_type, &branch_type,
|
| 5118 |
|
|
hash, destination, sym_sec,
|
| 5119 |
|
|
input_bfd, sym_name);
|
| 5120 |
|
|
if (stub_type == arm_stub_none)
|
| 5121 |
|
|
break;
|
| 5122 |
|
|
|
| 5123 |
|
|
/* Support for grouping stub sections. */
|
| 5124 |
|
|
id_sec = htab->stub_group[section->id].link_sec;
|
| 5125 |
|
|
|
| 5126 |
|
|
/* Get the name of this stub. */
|
| 5127 |
|
|
stub_name = elf32_arm_stub_name (id_sec, sym_sec, hash,
|
| 5128 |
|
|
irela, stub_type);
|
| 5129 |
|
|
if (!stub_name)
|
| 5130 |
|
|
goto error_ret_free_internal;
|
| 5131 |
|
|
|
| 5132 |
|
|
/* We've either created a stub for this reloc already,
|
| 5133 |
|
|
or we are about to. */
|
| 5134 |
|
|
created_stub = TRUE;
|
| 5135 |
|
|
|
| 5136 |
|
|
stub_entry = arm_stub_hash_lookup
|
| 5137 |
|
|
(&htab->stub_hash_table, stub_name,
|
| 5138 |
|
|
FALSE, FALSE);
|
| 5139 |
|
|
if (stub_entry != NULL)
|
| 5140 |
|
|
{
|
| 5141 |
|
|
/* The proper stub has already been created. */
|
| 5142 |
|
|
free (stub_name);
|
| 5143 |
|
|
stub_entry->target_value = sym_value;
|
| 5144 |
|
|
break;
|
| 5145 |
|
|
}
|
| 5146 |
|
|
|
| 5147 |
|
|
stub_entry = elf32_arm_add_stub (stub_name, section,
|
| 5148 |
|
|
htab);
|
| 5149 |
|
|
if (stub_entry == NULL)
|
| 5150 |
|
|
{
|
| 5151 |
|
|
free (stub_name);
|
| 5152 |
|
|
goto error_ret_free_internal;
|
| 5153 |
|
|
}
|
| 5154 |
|
|
|
| 5155 |
|
|
stub_entry->target_value = sym_value;
|
| 5156 |
|
|
stub_entry->target_section = sym_sec;
|
| 5157 |
|
|
stub_entry->stub_type = stub_type;
|
| 5158 |
|
|
stub_entry->h = hash;
|
| 5159 |
|
|
stub_entry->branch_type = branch_type;
|
| 5160 |
|
|
|
| 5161 |
|
|
if (sym_name == NULL)
|
| 5162 |
|
|
sym_name = "unnamed";
|
| 5163 |
|
|
stub_entry->output_name = (char *)
|
| 5164 |
|
|
bfd_alloc (htab->stub_bfd,
|
| 5165 |
|
|
sizeof (THUMB2ARM_GLUE_ENTRY_NAME)
|
| 5166 |
|
|
+ strlen (sym_name));
|
| 5167 |
|
|
if (stub_entry->output_name == NULL)
|
| 5168 |
|
|
{
|
| 5169 |
|
|
free (stub_name);
|
| 5170 |
|
|
goto error_ret_free_internal;
|
| 5171 |
|
|
}
|
| 5172 |
|
|
|
| 5173 |
|
|
/* For historical reasons, use the existing names for
|
| 5174 |
|
|
ARM-to-Thumb and Thumb-to-ARM stubs. */
|
| 5175 |
|
|
if ((r_type == (unsigned int) R_ARM_THM_CALL
|
| 5176 |
|
|
|| r_type == (unsigned int) R_ARM_THM_JUMP24)
|
| 5177 |
|
|
&& branch_type == ST_BRANCH_TO_ARM)
|
| 5178 |
|
|
sprintf (stub_entry->output_name,
|
| 5179 |
|
|
THUMB2ARM_GLUE_ENTRY_NAME, sym_name);
|
| 5180 |
|
|
else if ((r_type == (unsigned int) R_ARM_CALL
|
| 5181 |
|
|
|| r_type == (unsigned int) R_ARM_JUMP24)
|
| 5182 |
|
|
&& branch_type == ST_BRANCH_TO_THUMB)
|
| 5183 |
|
|
sprintf (stub_entry->output_name,
|
| 5184 |
|
|
ARM2THUMB_GLUE_ENTRY_NAME, sym_name);
|
| 5185 |
|
|
else
|
| 5186 |
|
|
sprintf (stub_entry->output_name, STUB_ENTRY_NAME,
|
| 5187 |
|
|
sym_name);
|
| 5188 |
|
|
|
| 5189 |
|
|
stub_changed = TRUE;
|
| 5190 |
|
|
}
|
| 5191 |
|
|
while (0);
|
| 5192 |
|
|
|
| 5193 |
|
|
/* Look for relocations which might trigger Cortex-A8
|
| 5194 |
|
|
erratum. */
|
| 5195 |
|
|
if (htab->fix_cortex_a8
|
| 5196 |
|
|
&& (r_type == (unsigned int) R_ARM_THM_JUMP24
|
| 5197 |
|
|
|| r_type == (unsigned int) R_ARM_THM_JUMP19
|
| 5198 |
|
|
|| r_type == (unsigned int) R_ARM_THM_CALL
|
| 5199 |
|
|
|| r_type == (unsigned int) R_ARM_THM_XPC22))
|
| 5200 |
|
|
{
|
| 5201 |
|
|
bfd_vma from = section->output_section->vma
|
| 5202 |
|
|
+ section->output_offset
|
| 5203 |
|
|
+ irela->r_offset;
|
| 5204 |
|
|
|
| 5205 |
|
|
if ((from & 0xfff) == 0xffe)
|
| 5206 |
|
|
{
|
| 5207 |
|
|
/* Found a candidate. Note we haven't checked the
|
| 5208 |
|
|
destination is within 4K here: if we do so (and
|
| 5209 |
|
|
don't create an entry in a8_relocs) we can't tell
|
| 5210 |
|
|
that a branch should have been relocated when
|
| 5211 |
|
|
scanning later. */
|
| 5212 |
|
|
if (num_a8_relocs == a8_reloc_table_size)
|
| 5213 |
|
|
{
|
| 5214 |
|
|
a8_reloc_table_size *= 2;
|
| 5215 |
|
|
a8_relocs = (struct a8_erratum_reloc *)
|
| 5216 |
|
|
bfd_realloc (a8_relocs,
|
| 5217 |
|
|
sizeof (struct a8_erratum_reloc)
|
| 5218 |
|
|
* a8_reloc_table_size);
|
| 5219 |
|
|
}
|
| 5220 |
|
|
|
| 5221 |
|
|
a8_relocs[num_a8_relocs].from = from;
|
| 5222 |
|
|
a8_relocs[num_a8_relocs].destination = destination;
|
| 5223 |
|
|
a8_relocs[num_a8_relocs].r_type = r_type;
|
| 5224 |
|
|
a8_relocs[num_a8_relocs].branch_type = branch_type;
|
| 5225 |
|
|
a8_relocs[num_a8_relocs].sym_name = sym_name;
|
| 5226 |
|
|
a8_relocs[num_a8_relocs].non_a8_stub = created_stub;
|
| 5227 |
|
|
a8_relocs[num_a8_relocs].hash = hash;
|
| 5228 |
|
|
|
| 5229 |
|
|
num_a8_relocs++;
|
| 5230 |
|
|
}
|
| 5231 |
|
|
}
|
| 5232 |
|
|
}
|
| 5233 |
|
|
|
| 5234 |
|
|
/* We're done with the internal relocs, free them. */
|
| 5235 |
|
|
if (elf_section_data (section)->relocs == NULL)
|
| 5236 |
|
|
free (internal_relocs);
|
| 5237 |
|
|
}
|
| 5238 |
|
|
|
| 5239 |
|
|
if (htab->fix_cortex_a8)
|
| 5240 |
|
|
{
|
| 5241 |
|
|
/* Sort relocs which might apply to Cortex-A8 erratum. */
|
| 5242 |
|
|
qsort (a8_relocs, num_a8_relocs,
|
| 5243 |
|
|
sizeof (struct a8_erratum_reloc),
|
| 5244 |
|
|
&a8_reloc_compare);
|
| 5245 |
|
|
|
| 5246 |
|
|
/* Scan for branches which might trigger Cortex-A8 erratum. */
|
| 5247 |
|
|
if (cortex_a8_erratum_scan (input_bfd, info, &a8_fixes,
|
| 5248 |
|
|
&num_a8_fixes, &a8_fix_table_size,
|
| 5249 |
|
|
a8_relocs, num_a8_relocs,
|
| 5250 |
|
|
prev_num_a8_fixes, &stub_changed)
|
| 5251 |
|
|
!= 0)
|
| 5252 |
|
|
goto error_ret_free_local;
|
| 5253 |
|
|
}
|
| 5254 |
|
|
}
|
| 5255 |
|
|
|
| 5256 |
|
|
if (prev_num_a8_fixes != num_a8_fixes)
|
| 5257 |
|
|
stub_changed = TRUE;
|
| 5258 |
|
|
|
| 5259 |
|
|
if (!stub_changed)
|
| 5260 |
|
|
break;
|
| 5261 |
|
|
|
| 5262 |
|
|
/* OK, we've added some stubs. Find out the new size of the
|
| 5263 |
|
|
stub sections. */
|
| 5264 |
|
|
for (stub_sec = htab->stub_bfd->sections;
|
| 5265 |
|
|
stub_sec != NULL;
|
| 5266 |
|
|
stub_sec = stub_sec->next)
|
| 5267 |
|
|
{
|
| 5268 |
|
|
/* Ignore non-stub sections. */
|
| 5269 |
|
|
if (!strstr (stub_sec->name, STUB_SUFFIX))
|
| 5270 |
|
|
continue;
|
| 5271 |
|
|
|
| 5272 |
|
|
stub_sec->size = 0;
|
| 5273 |
|
|
}
|
| 5274 |
|
|
|
| 5275 |
|
|
bfd_hash_traverse (&htab->stub_hash_table, arm_size_one_stub, htab);
|
| 5276 |
|
|
|
| 5277 |
|
|
/* Add Cortex-A8 erratum veneers to stub section sizes too. */
|
| 5278 |
|
|
if (htab->fix_cortex_a8)
|
| 5279 |
|
|
for (i = 0; i < num_a8_fixes; i++)
|
| 5280 |
|
|
{
|
| 5281 |
|
|
stub_sec = elf32_arm_create_or_find_stub_sec (NULL,
|
| 5282 |
|
|
a8_fixes[i].section, htab);
|
| 5283 |
|
|
|
| 5284 |
|
|
if (stub_sec == NULL)
|
| 5285 |
|
|
goto error_ret_free_local;
|
| 5286 |
|
|
|
| 5287 |
|
|
stub_sec->size
|
| 5288 |
|
|
+= find_stub_size_and_template (a8_fixes[i].stub_type, NULL,
|
| 5289 |
|
|
NULL);
|
| 5290 |
|
|
}
|
| 5291 |
|
|
|
| 5292 |
|
|
|
| 5293 |
|
|
/* Ask the linker to do its stuff. */
|
| 5294 |
|
|
(*htab->layout_sections_again) ();
|
| 5295 |
|
|
}
|
| 5296 |
|
|
|
| 5297 |
|
|
/* Add stubs for Cortex-A8 erratum fixes now. */
|
| 5298 |
|
|
if (htab->fix_cortex_a8)
|
| 5299 |
|
|
{
|
| 5300 |
|
|
for (i = 0; i < num_a8_fixes; i++)
|
| 5301 |
|
|
{
|
| 5302 |
|
|
struct elf32_arm_stub_hash_entry *stub_entry;
|
| 5303 |
|
|
char *stub_name = a8_fixes[i].stub_name;
|
| 5304 |
|
|
asection *section = a8_fixes[i].section;
|
| 5305 |
|
|
unsigned int section_id = a8_fixes[i].section->id;
|
| 5306 |
|
|
asection *link_sec = htab->stub_group[section_id].link_sec;
|
| 5307 |
|
|
asection *stub_sec = htab->stub_group[section_id].stub_sec;
|
| 5308 |
|
|
const insn_sequence *template_sequence;
|
| 5309 |
|
|
int template_size, size = 0;
|
| 5310 |
|
|
|
| 5311 |
|
|
stub_entry = arm_stub_hash_lookup (&htab->stub_hash_table, stub_name,
|
| 5312 |
|
|
TRUE, FALSE);
|
| 5313 |
|
|
if (stub_entry == NULL)
|
| 5314 |
|
|
{
|
| 5315 |
|
|
(*_bfd_error_handler) (_("%s: cannot create stub entry %s"),
|
| 5316 |
|
|
section->owner,
|
| 5317 |
|
|
stub_name);
|
| 5318 |
|
|
return FALSE;
|
| 5319 |
|
|
}
|
| 5320 |
|
|
|
| 5321 |
|
|
stub_entry->stub_sec = stub_sec;
|
| 5322 |
|
|
stub_entry->stub_offset = 0;
|
| 5323 |
|
|
stub_entry->id_sec = link_sec;
|
| 5324 |
|
|
stub_entry->stub_type = a8_fixes[i].stub_type;
|
| 5325 |
|
|
stub_entry->target_section = a8_fixes[i].section;
|
| 5326 |
|
|
stub_entry->target_value = a8_fixes[i].offset;
|
| 5327 |
|
|
stub_entry->target_addend = a8_fixes[i].addend;
|
| 5328 |
|
|
stub_entry->orig_insn = a8_fixes[i].orig_insn;
|
| 5329 |
|
|
stub_entry->branch_type = a8_fixes[i].branch_type;
|
| 5330 |
|
|
|
| 5331 |
|
|
size = find_stub_size_and_template (a8_fixes[i].stub_type,
|
| 5332 |
|
|
&template_sequence,
|
| 5333 |
|
|
&template_size);
|
| 5334 |
|
|
|
| 5335 |
|
|
stub_entry->stub_size = size;
|
| 5336 |
|
|
stub_entry->stub_template = template_sequence;
|
| 5337 |
|
|
stub_entry->stub_template_size = template_size;
|
| 5338 |
|
|
}
|
| 5339 |
|
|
|
| 5340 |
|
|
/* Stash the Cortex-A8 erratum fix array for use later in
|
| 5341 |
|
|
elf32_arm_write_section(). */
|
| 5342 |
|
|
htab->a8_erratum_fixes = a8_fixes;
|
| 5343 |
|
|
htab->num_a8_erratum_fixes = num_a8_fixes;
|
| 5344 |
|
|
}
|
| 5345 |
|
|
else
|
| 5346 |
|
|
{
|
| 5347 |
|
|
htab->a8_erratum_fixes = NULL;
|
| 5348 |
|
|
htab->num_a8_erratum_fixes = 0;
|
| 5349 |
|
|
}
|
| 5350 |
|
|
return TRUE;
|
| 5351 |
|
|
|
| 5352 |
|
|
error_ret_free_local:
|
| 5353 |
|
|
return FALSE;
|
| 5354 |
|
|
}
|
| 5355 |
|
|
|
| 5356 |
|
|
/* Build all the stubs associated with the current output file. The
|
| 5357 |
|
|
stubs are kept in a hash table attached to the main linker hash
|
| 5358 |
|
|
table. We also set up the .plt entries for statically linked PIC
|
| 5359 |
|
|
functions here. This function is called via arm_elf_finish in the
|
| 5360 |
|
|
linker. */
|
| 5361 |
|
|
|
| 5362 |
|
|
bfd_boolean
|
| 5363 |
|
|
elf32_arm_build_stubs (struct bfd_link_info *info)
|
| 5364 |
|
|
{
|
| 5365 |
|
|
asection *stub_sec;
|
| 5366 |
|
|
struct bfd_hash_table *table;
|
| 5367 |
|
|
struct elf32_arm_link_hash_table *htab;
|
| 5368 |
|
|
|
| 5369 |
|
|
htab = elf32_arm_hash_table (info);
|
| 5370 |
|
|
if (htab == NULL)
|
| 5371 |
|
|
return FALSE;
|
| 5372 |
|
|
|
| 5373 |
|
|
for (stub_sec = htab->stub_bfd->sections;
|
| 5374 |
|
|
stub_sec != NULL;
|
| 5375 |
|
|
stub_sec = stub_sec->next)
|
| 5376 |
|
|
{
|
| 5377 |
|
|
bfd_size_type size;
|
| 5378 |
|
|
|
| 5379 |
|
|
/* Ignore non-stub sections. */
|
| 5380 |
|
|
if (!strstr (stub_sec->name, STUB_SUFFIX))
|
| 5381 |
|
|
continue;
|
| 5382 |
|
|
|
| 5383 |
|
|
/* Allocate memory to hold the linker stubs. */
|
| 5384 |
|
|
size = stub_sec->size;
|
| 5385 |
|
|
stub_sec->contents = (unsigned char *) bfd_zalloc (htab->stub_bfd, size);
|
| 5386 |
|
|
if (stub_sec->contents == NULL && size != 0)
|
| 5387 |
|
|
return FALSE;
|
| 5388 |
|
|
stub_sec->size = 0;
|
| 5389 |
|
|
}
|
| 5390 |
|
|
|
| 5391 |
|
|
/* Build the stubs as directed by the stub hash table. */
|
| 5392 |
|
|
table = &htab->stub_hash_table;
|
| 5393 |
|
|
bfd_hash_traverse (table, arm_build_one_stub, info);
|
| 5394 |
|
|
if (htab->fix_cortex_a8)
|
| 5395 |
|
|
{
|
| 5396 |
|
|
/* Place the cortex a8 stubs last. */
|
| 5397 |
|
|
htab->fix_cortex_a8 = -1;
|
| 5398 |
|
|
bfd_hash_traverse (table, arm_build_one_stub, info);
|
| 5399 |
|
|
}
|
| 5400 |
|
|
|
| 5401 |
|
|
return TRUE;
|
| 5402 |
|
|
}
|
| 5403 |
|
|
|
| 5404 |
|
|
/* Locate the Thumb encoded calling stub for NAME. */
|
| 5405 |
|
|
|
| 5406 |
|
|
static struct elf_link_hash_entry *
|
| 5407 |
|
|
find_thumb_glue (struct bfd_link_info *link_info,
|
| 5408 |
|
|
const char *name,
|
| 5409 |
|
|
char **error_message)
|
| 5410 |
|
|
{
|
| 5411 |
|
|
char *tmp_name;
|
| 5412 |
|
|
struct elf_link_hash_entry *hash;
|
| 5413 |
|
|
struct elf32_arm_link_hash_table *hash_table;
|
| 5414 |
|
|
|
| 5415 |
|
|
/* We need a pointer to the armelf specific hash table. */
|
| 5416 |
|
|
hash_table = elf32_arm_hash_table (link_info);
|
| 5417 |
|
|
if (hash_table == NULL)
|
| 5418 |
|
|
return NULL;
|
| 5419 |
|
|
|
| 5420 |
|
|
tmp_name = (char *) bfd_malloc ((bfd_size_type) strlen (name)
|
| 5421 |
|
|
+ strlen (THUMB2ARM_GLUE_ENTRY_NAME) + 1);
|
| 5422 |
|
|
|
| 5423 |
|
|
BFD_ASSERT (tmp_name);
|
| 5424 |
|
|
|
| 5425 |
|
|
sprintf (tmp_name, THUMB2ARM_GLUE_ENTRY_NAME, name);
|
| 5426 |
|
|
|
| 5427 |
|
|
hash = elf_link_hash_lookup
|
| 5428 |
|
|
(&(hash_table)->root, tmp_name, FALSE, FALSE, TRUE);
|
| 5429 |
|
|
|
| 5430 |
|
|
if (hash == NULL
|
| 5431 |
|
|
&& asprintf (error_message, _("unable to find THUMB glue '%s' for '%s'"),
|
| 5432 |
|
|
tmp_name, name) == -1)
|
| 5433 |
|
|
*error_message = (char *) bfd_errmsg (bfd_error_system_call);
|
| 5434 |
|
|
|
| 5435 |
|
|
free (tmp_name);
|
| 5436 |
|
|
|
| 5437 |
|
|
return hash;
|
| 5438 |
|
|
}
|
| 5439 |
|
|
|
| 5440 |
|
|
/* Locate the ARM encoded calling stub for NAME. */
|
| 5441 |
|
|
|
| 5442 |
|
|
static struct elf_link_hash_entry *
|
| 5443 |
|
|
find_arm_glue (struct bfd_link_info *link_info,
|
| 5444 |
|
|
const char *name,
|
| 5445 |
|
|
char **error_message)
|
| 5446 |
|
|
{
|
| 5447 |
|
|
char *tmp_name;
|
| 5448 |
|
|
struct elf_link_hash_entry *myh;
|
| 5449 |
|
|
struct elf32_arm_link_hash_table *hash_table;
|
| 5450 |
|
|
|
| 5451 |
|
|
/* We need a pointer to the elfarm specific hash table. */
|
| 5452 |
|
|
hash_table = elf32_arm_hash_table (link_info);
|
| 5453 |
|
|
if (hash_table == NULL)
|
| 5454 |
|
|
return NULL;
|
| 5455 |
|
|
|
| 5456 |
|
|
tmp_name = (char *) bfd_malloc ((bfd_size_type) strlen (name)
|
| 5457 |
|
|
+ strlen (ARM2THUMB_GLUE_ENTRY_NAME) + 1);
|
| 5458 |
|
|
|
| 5459 |
|
|
BFD_ASSERT (tmp_name);
|
| 5460 |
|
|
|
| 5461 |
|
|
sprintf (tmp_name, ARM2THUMB_GLUE_ENTRY_NAME, name);
|
| 5462 |
|
|
|
| 5463 |
|
|
myh = elf_link_hash_lookup
|
| 5464 |
|
|
(&(hash_table)->root, tmp_name, FALSE, FALSE, TRUE);
|
| 5465 |
|
|
|
| 5466 |
|
|
if (myh == NULL
|
| 5467 |
|
|
&& asprintf (error_message, _("unable to find ARM glue '%s' for '%s'"),
|
| 5468 |
|
|
tmp_name, name) == -1)
|
| 5469 |
|
|
*error_message = (char *) bfd_errmsg (bfd_error_system_call);
|
| 5470 |
|
|
|
| 5471 |
|
|
free (tmp_name);
|
| 5472 |
|
|
|
| 5473 |
|
|
return myh;
|
| 5474 |
|
|
}
|
| 5475 |
|
|
|
| 5476 |
|
|
/* ARM->Thumb glue (static images):
|
| 5477 |
|
|
|
| 5478 |
|
|
.arm
|
| 5479 |
|
|
__func_from_arm:
|
| 5480 |
|
|
ldr r12, __func_addr
|
| 5481 |
|
|
bx r12
|
| 5482 |
|
|
__func_addr:
|
| 5483 |
|
|
.word func @ behave as if you saw a ARM_32 reloc.
|
| 5484 |
|
|
|
| 5485 |
|
|
(v5t static images)
|
| 5486 |
|
|
.arm
|
| 5487 |
|
|
__func_from_arm:
|
| 5488 |
|
|
ldr pc, __func_addr
|
| 5489 |
|
|
__func_addr:
|
| 5490 |
|
|
.word func @ behave as if you saw a ARM_32 reloc.
|
| 5491 |
|
|
|
| 5492 |
|
|
(relocatable images)
|
| 5493 |
|
|
.arm
|
| 5494 |
|
|
__func_from_arm:
|
| 5495 |
|
|
ldr r12, __func_offset
|
| 5496 |
|
|
add r12, r12, pc
|
| 5497 |
|
|
bx r12
|
| 5498 |
|
|
__func_offset:
|
| 5499 |
|
|
.word func - . */
|
| 5500 |
|
|
|
| 5501 |
|
|
#define ARM2THUMB_STATIC_GLUE_SIZE 12
|
| 5502 |
|
|
static const insn32 a2t1_ldr_insn = 0xe59fc000;
|
| 5503 |
|
|
static const insn32 a2t2_bx_r12_insn = 0xe12fff1c;
|
| 5504 |
|
|
static const insn32 a2t3_func_addr_insn = 0x00000001;
|
| 5505 |
|
|
|
| 5506 |
|
|
#define ARM2THUMB_V5_STATIC_GLUE_SIZE 8
|
| 5507 |
|
|
static const insn32 a2t1v5_ldr_insn = 0xe51ff004;
|
| 5508 |
|
|
static const insn32 a2t2v5_func_addr_insn = 0x00000001;
|
| 5509 |
|
|
|
| 5510 |
|
|
#define ARM2THUMB_PIC_GLUE_SIZE 16
|
| 5511 |
|
|
static const insn32 a2t1p_ldr_insn = 0xe59fc004;
|
| 5512 |
|
|
static const insn32 a2t2p_add_pc_insn = 0xe08cc00f;
|
| 5513 |
|
|
static const insn32 a2t3p_bx_r12_insn = 0xe12fff1c;
|
| 5514 |
|
|
|
| 5515 |
|
|
/* Thumb->ARM: Thumb->(non-interworking aware) ARM
|
| 5516 |
|
|
|
| 5517 |
|
|
.thumb .thumb
|
| 5518 |
|
|
.align 2 .align 2
|
| 5519 |
|
|
__func_from_thumb: __func_from_thumb:
|
| 5520 |
|
|
bx pc push {r6, lr}
|
| 5521 |
|
|
nop ldr r6, __func_addr
|
| 5522 |
|
|
.arm mov lr, pc
|
| 5523 |
|
|
b func bx r6
|
| 5524 |
|
|
.arm
|
| 5525 |
|
|
;; back_to_thumb
|
| 5526 |
|
|
ldmia r13! {r6, lr}
|
| 5527 |
|
|
bx lr
|
| 5528 |
|
|
__func_addr:
|
| 5529 |
|
|
.word func */
|
| 5530 |
|
|
|
| 5531 |
|
|
#define THUMB2ARM_GLUE_SIZE 8
|
| 5532 |
|
|
static const insn16 t2a1_bx_pc_insn = 0x4778;
|
| 5533 |
|
|
static const insn16 t2a2_noop_insn = 0x46c0;
|
| 5534 |
|
|
static const insn32 t2a3_b_insn = 0xea000000;
|
| 5535 |
|
|
|
| 5536 |
|
|
#define VFP11_ERRATUM_VENEER_SIZE 8
|
| 5537 |
|
|
|
| 5538 |
|
|
#define ARM_BX_VENEER_SIZE 12
|
| 5539 |
|
|
static const insn32 armbx1_tst_insn = 0xe3100001;
|
| 5540 |
|
|
static const insn32 armbx2_moveq_insn = 0x01a0f000;
|
| 5541 |
|
|
static const insn32 armbx3_bx_insn = 0xe12fff10;
|
| 5542 |
|
|
|
| 5543 |
|
|
#ifndef ELFARM_NABI_C_INCLUDED
|
| 5544 |
|
|
static void
|
| 5545 |
|
|
arm_allocate_glue_section_space (bfd * abfd, bfd_size_type size, const char * name)
|
| 5546 |
|
|
{
|
| 5547 |
|
|
asection * s;
|
| 5548 |
|
|
bfd_byte * contents;
|
| 5549 |
|
|
|
| 5550 |
|
|
if (size == 0)
|
| 5551 |
|
|
{
|
| 5552 |
|
|
/* Do not include empty glue sections in the output. */
|
| 5553 |
|
|
if (abfd != NULL)
|
| 5554 |
|
|
{
|
| 5555 |
|
|
s = bfd_get_section_by_name (abfd, name);
|
| 5556 |
|
|
if (s != NULL)
|
| 5557 |
|
|
s->flags |= SEC_EXCLUDE;
|
| 5558 |
|
|
}
|
| 5559 |
|
|
return;
|
| 5560 |
|
|
}
|
| 5561 |
|
|
|
| 5562 |
|
|
BFD_ASSERT (abfd != NULL);
|
| 5563 |
|
|
|
| 5564 |
|
|
s = bfd_get_section_by_name (abfd, name);
|
| 5565 |
|
|
BFD_ASSERT (s != NULL);
|
| 5566 |
|
|
|
| 5567 |
|
|
contents = (bfd_byte *) bfd_alloc (abfd, size);
|
| 5568 |
|
|
|
| 5569 |
|
|
BFD_ASSERT (s->size == size);
|
| 5570 |
|
|
s->contents = contents;
|
| 5571 |
|
|
}
|
| 5572 |
|
|
|
| 5573 |
|
|
bfd_boolean
|
| 5574 |
|
|
bfd_elf32_arm_allocate_interworking_sections (struct bfd_link_info * info)
|
| 5575 |
|
|
{
|
| 5576 |
|
|
struct elf32_arm_link_hash_table * globals;
|
| 5577 |
|
|
|
| 5578 |
|
|
globals = elf32_arm_hash_table (info);
|
| 5579 |
|
|
BFD_ASSERT (globals != NULL);
|
| 5580 |
|
|
|
| 5581 |
|
|
arm_allocate_glue_section_space (globals->bfd_of_glue_owner,
|
| 5582 |
|
|
globals->arm_glue_size,
|
| 5583 |
|
|
ARM2THUMB_GLUE_SECTION_NAME);
|
| 5584 |
|
|
|
| 5585 |
|
|
arm_allocate_glue_section_space (globals->bfd_of_glue_owner,
|
| 5586 |
|
|
globals->thumb_glue_size,
|
| 5587 |
|
|
THUMB2ARM_GLUE_SECTION_NAME);
|
| 5588 |
|
|
|
| 5589 |
|
|
arm_allocate_glue_section_space (globals->bfd_of_glue_owner,
|
| 5590 |
|
|
globals->vfp11_erratum_glue_size,
|
| 5591 |
|
|
VFP11_ERRATUM_VENEER_SECTION_NAME);
|
| 5592 |
|
|
|
| 5593 |
|
|
arm_allocate_glue_section_space (globals->bfd_of_glue_owner,
|
| 5594 |
|
|
globals->bx_glue_size,
|
| 5595 |
|
|
ARM_BX_GLUE_SECTION_NAME);
|
| 5596 |
|
|
|
| 5597 |
|
|
return TRUE;
|
| 5598 |
|
|
}
|
| 5599 |
|
|
|
| 5600 |
|
|
/* Allocate space and symbols for calling a Thumb function from Arm mode.
|
| 5601 |
|
|
returns the symbol identifying the stub. */
|
| 5602 |
|
|
|
| 5603 |
|
|
static struct elf_link_hash_entry *
|
| 5604 |
|
|
record_arm_to_thumb_glue (struct bfd_link_info * link_info,
|
| 5605 |
|
|
struct elf_link_hash_entry * h)
|
| 5606 |
|
|
{
|
| 5607 |
|
|
const char * name = h->root.root.string;
|
| 5608 |
|
|
asection * s;
|
| 5609 |
|
|
char * tmp_name;
|
| 5610 |
|
|
struct elf_link_hash_entry * myh;
|
| 5611 |
|
|
struct bfd_link_hash_entry * bh;
|
| 5612 |
|
|
struct elf32_arm_link_hash_table * globals;
|
| 5613 |
|
|
bfd_vma val;
|
| 5614 |
|
|
bfd_size_type size;
|
| 5615 |
|
|
|
| 5616 |
|
|
globals = elf32_arm_hash_table (link_info);
|
| 5617 |
|
|
BFD_ASSERT (globals != NULL);
|
| 5618 |
|
|
BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
|
| 5619 |
|
|
|
| 5620 |
|
|
s = bfd_get_section_by_name
|
| 5621 |
|
|
(globals->bfd_of_glue_owner, ARM2THUMB_GLUE_SECTION_NAME);
|
| 5622 |
|
|
|
| 5623 |
|
|
BFD_ASSERT (s != NULL);
|
| 5624 |
|
|
|
| 5625 |
|
|
tmp_name = (char *) bfd_malloc ((bfd_size_type) strlen (name)
|
| 5626 |
|
|
+ strlen (ARM2THUMB_GLUE_ENTRY_NAME) + 1);
|
| 5627 |
|
|
|
| 5628 |
|
|
BFD_ASSERT (tmp_name);
|
| 5629 |
|
|
|
| 5630 |
|
|
sprintf (tmp_name, ARM2THUMB_GLUE_ENTRY_NAME, name);
|
| 5631 |
|
|
|
| 5632 |
|
|
myh = elf_link_hash_lookup
|
| 5633 |
|
|
(&(globals)->root, tmp_name, FALSE, FALSE, TRUE);
|
| 5634 |
|
|
|
| 5635 |
|
|
if (myh != NULL)
|
| 5636 |
|
|
{
|
| 5637 |
|
|
/* We've already seen this guy. */
|
| 5638 |
|
|
free (tmp_name);
|
| 5639 |
|
|
return myh;
|
| 5640 |
|
|
}
|
| 5641 |
|
|
|
| 5642 |
|
|
/* The only trick here is using hash_table->arm_glue_size as the value.
|
| 5643 |
|
|
Even though the section isn't allocated yet, this is where we will be
|
| 5644 |
|
|
putting it. The +1 on the value marks that the stub has not been
|
| 5645 |
|
|
output yet - not that it is a Thumb function. */
|
| 5646 |
|
|
bh = NULL;
|
| 5647 |
|
|
val = globals->arm_glue_size + 1;
|
| 5648 |
|
|
_bfd_generic_link_add_one_symbol (link_info, globals->bfd_of_glue_owner,
|
| 5649 |
|
|
tmp_name, BSF_GLOBAL, s, val,
|
| 5650 |
|
|
NULL, TRUE, FALSE, &bh);
|
| 5651 |
|
|
|
| 5652 |
|
|
myh = (struct elf_link_hash_entry *) bh;
|
| 5653 |
|
|
myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC);
|
| 5654 |
|
|
myh->forced_local = 1;
|
| 5655 |
|
|
|
| 5656 |
|
|
free (tmp_name);
|
| 5657 |
|
|
|
| 5658 |
|
|
if (link_info->shared || globals->root.is_relocatable_executable
|
| 5659 |
|
|
|| globals->pic_veneer)
|
| 5660 |
|
|
size = ARM2THUMB_PIC_GLUE_SIZE;
|
| 5661 |
|
|
else if (globals->use_blx)
|
| 5662 |
|
|
size = ARM2THUMB_V5_STATIC_GLUE_SIZE;
|
| 5663 |
|
|
else
|
| 5664 |
|
|
size = ARM2THUMB_STATIC_GLUE_SIZE;
|
| 5665 |
|
|
|
| 5666 |
|
|
s->size += size;
|
| 5667 |
|
|
globals->arm_glue_size += size;
|
| 5668 |
|
|
|
| 5669 |
|
|
return myh;
|
| 5670 |
|
|
}
|
| 5671 |
|
|
|
| 5672 |
|
|
/* Allocate space for ARMv4 BX veneers. */
|
| 5673 |
|
|
|
| 5674 |
|
|
static void
|
| 5675 |
|
|
record_arm_bx_glue (struct bfd_link_info * link_info, int reg)
|
| 5676 |
|
|
{
|
| 5677 |
|
|
asection * s;
|
| 5678 |
|
|
struct elf32_arm_link_hash_table *globals;
|
| 5679 |
|
|
char *tmp_name;
|
| 5680 |
|
|
struct elf_link_hash_entry *myh;
|
| 5681 |
|
|
struct bfd_link_hash_entry *bh;
|
| 5682 |
|
|
bfd_vma val;
|
| 5683 |
|
|
|
| 5684 |
|
|
/* BX PC does not need a veneer. */
|
| 5685 |
|
|
if (reg == 15)
|
| 5686 |
|
|
return;
|
| 5687 |
|
|
|
| 5688 |
|
|
globals = elf32_arm_hash_table (link_info);
|
| 5689 |
|
|
BFD_ASSERT (globals != NULL);
|
| 5690 |
|
|
BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
|
| 5691 |
|
|
|
| 5692 |
|
|
/* Check if this veneer has already been allocated. */
|
| 5693 |
|
|
if (globals->bx_glue_offset[reg])
|
| 5694 |
|
|
return;
|
| 5695 |
|
|
|
| 5696 |
|
|
s = bfd_get_section_by_name
|
| 5697 |
|
|
(globals->bfd_of_glue_owner, ARM_BX_GLUE_SECTION_NAME);
|
| 5698 |
|
|
|
| 5699 |
|
|
BFD_ASSERT (s != NULL);
|
| 5700 |
|
|
|
| 5701 |
|
|
/* Add symbol for veneer. */
|
| 5702 |
|
|
tmp_name = (char *)
|
| 5703 |
|
|
bfd_malloc ((bfd_size_type) strlen (ARM_BX_GLUE_ENTRY_NAME) + 1);
|
| 5704 |
|
|
|
| 5705 |
|
|
BFD_ASSERT (tmp_name);
|
| 5706 |
|
|
|
| 5707 |
|
|
sprintf (tmp_name, ARM_BX_GLUE_ENTRY_NAME, reg);
|
| 5708 |
|
|
|
| 5709 |
|
|
myh = elf_link_hash_lookup
|
| 5710 |
|
|
(&(globals)->root, tmp_name, FALSE, FALSE, FALSE);
|
| 5711 |
|
|
|
| 5712 |
|
|
BFD_ASSERT (myh == NULL);
|
| 5713 |
|
|
|
| 5714 |
|
|
bh = NULL;
|
| 5715 |
|
|
val = globals->bx_glue_size;
|
| 5716 |
|
|
_bfd_generic_link_add_one_symbol (link_info, globals->bfd_of_glue_owner,
|
| 5717 |
|
|
tmp_name, BSF_FUNCTION | BSF_LOCAL, s, val,
|
| 5718 |
|
|
NULL, TRUE, FALSE, &bh);
|
| 5719 |
|
|
|
| 5720 |
|
|
myh = (struct elf_link_hash_entry *) bh;
|
| 5721 |
|
|
myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC);
|
| 5722 |
|
|
myh->forced_local = 1;
|
| 5723 |
|
|
|
| 5724 |
|
|
s->size += ARM_BX_VENEER_SIZE;
|
| 5725 |
|
|
globals->bx_glue_offset[reg] = globals->bx_glue_size | 2;
|
| 5726 |
|
|
globals->bx_glue_size += ARM_BX_VENEER_SIZE;
|
| 5727 |
|
|
}
|
| 5728 |
|
|
|
| 5729 |
|
|
|
| 5730 |
|
|
/* Add an entry to the code/data map for section SEC. */
|
| 5731 |
|
|
|
| 5732 |
|
|
static void
|
| 5733 |
|
|
elf32_arm_section_map_add (asection *sec, char type, bfd_vma vma)
|
| 5734 |
|
|
{
|
| 5735 |
|
|
struct _arm_elf_section_data *sec_data = elf32_arm_section_data (sec);
|
| 5736 |
|
|
unsigned int newidx;
|
| 5737 |
|
|
|
| 5738 |
|
|
if (sec_data->map == NULL)
|
| 5739 |
|
|
{
|
| 5740 |
|
|
sec_data->map = (elf32_arm_section_map *)
|
| 5741 |
|
|
bfd_malloc (sizeof (elf32_arm_section_map));
|
| 5742 |
|
|
sec_data->mapcount = 0;
|
| 5743 |
|
|
sec_data->mapsize = 1;
|
| 5744 |
|
|
}
|
| 5745 |
|
|
|
| 5746 |
|
|
newidx = sec_data->mapcount++;
|
| 5747 |
|
|
|
| 5748 |
|
|
if (sec_data->mapcount > sec_data->mapsize)
|
| 5749 |
|
|
{
|
| 5750 |
|
|
sec_data->mapsize *= 2;
|
| 5751 |
|
|
sec_data->map = (elf32_arm_section_map *)
|
| 5752 |
|
|
bfd_realloc_or_free (sec_data->map, sec_data->mapsize
|
| 5753 |
|
|
* sizeof (elf32_arm_section_map));
|
| 5754 |
|
|
}
|
| 5755 |
|
|
|
| 5756 |
|
|
if (sec_data->map)
|
| 5757 |
|
|
{
|
| 5758 |
|
|
sec_data->map[newidx].vma = vma;
|
| 5759 |
|
|
sec_data->map[newidx].type = type;
|
| 5760 |
|
|
}
|
| 5761 |
|
|
}
|
| 5762 |
|
|
|
| 5763 |
|
|
|
| 5764 |
|
|
/* Record information about a VFP11 denorm-erratum veneer. Only ARM-mode
|
| 5765 |
|
|
veneers are handled for now. */
|
| 5766 |
|
|
|
| 5767 |
|
|
static bfd_vma
|
| 5768 |
|
|
record_vfp11_erratum_veneer (struct bfd_link_info *link_info,
|
| 5769 |
|
|
elf32_vfp11_erratum_list *branch,
|
| 5770 |
|
|
bfd *branch_bfd,
|
| 5771 |
|
|
asection *branch_sec,
|
| 5772 |
|
|
unsigned int offset)
|
| 5773 |
|
|
{
|
| 5774 |
|
|
asection *s;
|
| 5775 |
|
|
struct elf32_arm_link_hash_table *hash_table;
|
| 5776 |
|
|
char *tmp_name;
|
| 5777 |
|
|
struct elf_link_hash_entry *myh;
|
| 5778 |
|
|
struct bfd_link_hash_entry *bh;
|
| 5779 |
|
|
bfd_vma val;
|
| 5780 |
|
|
struct _arm_elf_section_data *sec_data;
|
| 5781 |
|
|
elf32_vfp11_erratum_list *newerr;
|
| 5782 |
|
|
|
| 5783 |
|
|
hash_table = elf32_arm_hash_table (link_info);
|
| 5784 |
|
|
BFD_ASSERT (hash_table != NULL);
|
| 5785 |
|
|
BFD_ASSERT (hash_table->bfd_of_glue_owner != NULL);
|
| 5786 |
|
|
|
| 5787 |
|
|
s = bfd_get_section_by_name
|
| 5788 |
|
|
(hash_table->bfd_of_glue_owner, VFP11_ERRATUM_VENEER_SECTION_NAME);
|
| 5789 |
|
|
|
| 5790 |
|
|
sec_data = elf32_arm_section_data (s);
|
| 5791 |
|
|
|
| 5792 |
|
|
BFD_ASSERT (s != NULL);
|
| 5793 |
|
|
|
| 5794 |
|
|
tmp_name = (char *) bfd_malloc ((bfd_size_type) strlen
|
| 5795 |
|
|
(VFP11_ERRATUM_VENEER_ENTRY_NAME) + 10);
|
| 5796 |
|
|
|
| 5797 |
|
|
BFD_ASSERT (tmp_name);
|
| 5798 |
|
|
|
| 5799 |
|
|
sprintf (tmp_name, VFP11_ERRATUM_VENEER_ENTRY_NAME,
|
| 5800 |
|
|
hash_table->num_vfp11_fixes);
|
| 5801 |
|
|
|
| 5802 |
|
|
myh = elf_link_hash_lookup
|
| 5803 |
|
|
(&(hash_table)->root, tmp_name, FALSE, FALSE, FALSE);
|
| 5804 |
|
|
|
| 5805 |
|
|
BFD_ASSERT (myh == NULL);
|
| 5806 |
|
|
|
| 5807 |
|
|
bh = NULL;
|
| 5808 |
|
|
val = hash_table->vfp11_erratum_glue_size;
|
| 5809 |
|
|
_bfd_generic_link_add_one_symbol (link_info, hash_table->bfd_of_glue_owner,
|
| 5810 |
|
|
tmp_name, BSF_FUNCTION | BSF_LOCAL, s, val,
|
| 5811 |
|
|
NULL, TRUE, FALSE, &bh);
|
| 5812 |
|
|
|
| 5813 |
|
|
myh = (struct elf_link_hash_entry *) bh;
|
| 5814 |
|
|
myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC);
|
| 5815 |
|
|
myh->forced_local = 1;
|
| 5816 |
|
|
|
| 5817 |
|
|
/* Link veneer back to calling location. */
|
| 5818 |
|
|
sec_data->erratumcount += 1;
|
| 5819 |
|
|
newerr = (elf32_vfp11_erratum_list *)
|
| 5820 |
|
|
bfd_zmalloc (sizeof (elf32_vfp11_erratum_list));
|
| 5821 |
|
|
|
| 5822 |
|
|
newerr->type = VFP11_ERRATUM_ARM_VENEER;
|
| 5823 |
|
|
newerr->vma = -1;
|
| 5824 |
|
|
newerr->u.v.branch = branch;
|
| 5825 |
|
|
newerr->u.v.id = hash_table->num_vfp11_fixes;
|
| 5826 |
|
|
branch->u.b.veneer = newerr;
|
| 5827 |
|
|
|
| 5828 |
|
|
newerr->next = sec_data->erratumlist;
|
| 5829 |
|
|
sec_data->erratumlist = newerr;
|
| 5830 |
|
|
|
| 5831 |
|
|
/* A symbol for the return from the veneer. */
|
| 5832 |
|
|
sprintf (tmp_name, VFP11_ERRATUM_VENEER_ENTRY_NAME "_r",
|
| 5833 |
|
|
hash_table->num_vfp11_fixes);
|
| 5834 |
|
|
|
| 5835 |
|
|
myh = elf_link_hash_lookup
|
| 5836 |
|
|
(&(hash_table)->root, tmp_name, FALSE, FALSE, FALSE);
|
| 5837 |
|
|
|
| 5838 |
|
|
if (myh != NULL)
|
| 5839 |
|
|
abort ();
|
| 5840 |
|
|
|
| 5841 |
|
|
bh = NULL;
|
| 5842 |
|
|
val = offset + 4;
|
| 5843 |
|
|
_bfd_generic_link_add_one_symbol (link_info, branch_bfd, tmp_name, BSF_LOCAL,
|
| 5844 |
|
|
branch_sec, val, NULL, TRUE, FALSE, &bh);
|
| 5845 |
|
|
|
| 5846 |
|
|
myh = (struct elf_link_hash_entry *) bh;
|
| 5847 |
|
|
myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC);
|
| 5848 |
|
|
myh->forced_local = 1;
|
| 5849 |
|
|
|
| 5850 |
|
|
free (tmp_name);
|
| 5851 |
|
|
|
| 5852 |
|
|
/* Generate a mapping symbol for the veneer section, and explicitly add an
|
| 5853 |
|
|
entry for that symbol to the code/data map for the section. */
|
| 5854 |
|
|
if (hash_table->vfp11_erratum_glue_size == 0)
|
| 5855 |
|
|
{
|
| 5856 |
|
|
bh = NULL;
|
| 5857 |
|
|
/* FIXME: Creates an ARM symbol. Thumb mode will need attention if it
|
| 5858 |
|
|
ever requires this erratum fix. */
|
| 5859 |
|
|
_bfd_generic_link_add_one_symbol (link_info,
|
| 5860 |
|
|
hash_table->bfd_of_glue_owner, "$a",
|
| 5861 |
|
|
BSF_LOCAL, s, 0, NULL,
|
| 5862 |
|
|
TRUE, FALSE, &bh);
|
| 5863 |
|
|
|
| 5864 |
|
|
myh = (struct elf_link_hash_entry *) bh;
|
| 5865 |
|
|
myh->type = ELF_ST_INFO (STB_LOCAL, STT_NOTYPE);
|
| 5866 |
|
|
myh->forced_local = 1;
|
| 5867 |
|
|
|
| 5868 |
|
|
/* The elf32_arm_init_maps function only cares about symbols from input
|
| 5869 |
|
|
BFDs. We must make a note of this generated mapping symbol
|
| 5870 |
|
|
ourselves so that code byteswapping works properly in
|
| 5871 |
|
|
elf32_arm_write_section. */
|
| 5872 |
|
|
elf32_arm_section_map_add (s, 'a', 0);
|
| 5873 |
|
|
}
|
| 5874 |
|
|
|
| 5875 |
|
|
s->size += VFP11_ERRATUM_VENEER_SIZE;
|
| 5876 |
|
|
hash_table->vfp11_erratum_glue_size += VFP11_ERRATUM_VENEER_SIZE;
|
| 5877 |
|
|
hash_table->num_vfp11_fixes++;
|
| 5878 |
|
|
|
| 5879 |
|
|
/* The offset of the veneer. */
|
| 5880 |
|
|
return val;
|
| 5881 |
|
|
}
|
| 5882 |
|
|
|
| 5883 |
|
|
#define ARM_GLUE_SECTION_FLAGS \
|
| 5884 |
|
|
(SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_CODE \
|
| 5885 |
|
|
| SEC_READONLY | SEC_LINKER_CREATED)
|
| 5886 |
|
|
|
| 5887 |
|
|
/* Create a fake section for use by the ARM backend of the linker. */
|
| 5888 |
|
|
|
| 5889 |
|
|
static bfd_boolean
|
| 5890 |
|
|
arm_make_glue_section (bfd * abfd, const char * name)
|
| 5891 |
|
|
{
|
| 5892 |
|
|
asection * sec;
|
| 5893 |
|
|
|
| 5894 |
|
|
sec = bfd_get_section_by_name (abfd, name);
|
| 5895 |
|
|
if (sec != NULL)
|
| 5896 |
|
|
/* Already made. */
|
| 5897 |
|
|
return TRUE;
|
| 5898 |
|
|
|
| 5899 |
|
|
sec = bfd_make_section_with_flags (abfd, name, ARM_GLUE_SECTION_FLAGS);
|
| 5900 |
|
|
|
| 5901 |
|
|
if (sec == NULL
|
| 5902 |
|
|
|| !bfd_set_section_alignment (abfd, sec, 2))
|
| 5903 |
|
|
return FALSE;
|
| 5904 |
|
|
|
| 5905 |
|
|
/* Set the gc mark to prevent the section from being removed by garbage
|
| 5906 |
|
|
collection, despite the fact that no relocs refer to this section. */
|
| 5907 |
|
|
sec->gc_mark = 1;
|
| 5908 |
|
|
|
| 5909 |
|
|
return TRUE;
|
| 5910 |
|
|
}
|
| 5911 |
|
|
|
| 5912 |
|
|
/* Add the glue sections to ABFD. This function is called from the
|
| 5913 |
|
|
linker scripts in ld/emultempl/{armelf}.em. */
|
| 5914 |
|
|
|
| 5915 |
|
|
bfd_boolean
|
| 5916 |
|
|
bfd_elf32_arm_add_glue_sections_to_bfd (bfd *abfd,
|
| 5917 |
|
|
struct bfd_link_info *info)
|
| 5918 |
|
|
{
|
| 5919 |
|
|
/* If we are only performing a partial
|
| 5920 |
|
|
link do not bother adding the glue. */
|
| 5921 |
|
|
if (info->relocatable)
|
| 5922 |
|
|
return TRUE;
|
| 5923 |
|
|
|
| 5924 |
|
|
return arm_make_glue_section (abfd, ARM2THUMB_GLUE_SECTION_NAME)
|
| 5925 |
|
|
&& arm_make_glue_section (abfd, THUMB2ARM_GLUE_SECTION_NAME)
|
| 5926 |
|
|
&& arm_make_glue_section (abfd, VFP11_ERRATUM_VENEER_SECTION_NAME)
|
| 5927 |
|
|
&& arm_make_glue_section (abfd, ARM_BX_GLUE_SECTION_NAME);
|
| 5928 |
|
|
}
|
| 5929 |
|
|
|
| 5930 |
|
|
/* Select a BFD to be used to hold the sections used by the glue code.
|
| 5931 |
|
|
This function is called from the linker scripts in ld/emultempl/
|
| 5932 |
|
|
{armelf/pe}.em. */
|
| 5933 |
|
|
|
| 5934 |
|
|
bfd_boolean
|
| 5935 |
|
|
bfd_elf32_arm_get_bfd_for_interworking (bfd *abfd, struct bfd_link_info *info)
|
| 5936 |
|
|
{
|
| 5937 |
|
|
struct elf32_arm_link_hash_table *globals;
|
| 5938 |
|
|
|
| 5939 |
|
|
/* If we are only performing a partial link
|
| 5940 |
|
|
do not bother getting a bfd to hold the glue. */
|
| 5941 |
|
|
if (info->relocatable)
|
| 5942 |
|
|
return TRUE;
|
| 5943 |
|
|
|
| 5944 |
|
|
/* Make sure we don't attach the glue sections to a dynamic object. */
|
| 5945 |
|
|
BFD_ASSERT (!(abfd->flags & DYNAMIC));
|
| 5946 |
|
|
|
| 5947 |
|
|
globals = elf32_arm_hash_table (info);
|
| 5948 |
|
|
BFD_ASSERT (globals != NULL);
|
| 5949 |
|
|
|
| 5950 |
|
|
if (globals->bfd_of_glue_owner != NULL)
|
| 5951 |
|
|
return TRUE;
|
| 5952 |
|
|
|
| 5953 |
|
|
/* Save the bfd for later use. */
|
| 5954 |
|
|
globals->bfd_of_glue_owner = abfd;
|
| 5955 |
|
|
|
| 5956 |
|
|
return TRUE;
|
| 5957 |
|
|
}
|
| 5958 |
|
|
|
| 5959 |
|
|
static void
|
| 5960 |
|
|
check_use_blx (struct elf32_arm_link_hash_table *globals)
|
| 5961 |
|
|
{
|
| 5962 |
161 |
khays |
int cpu_arch;
|
| 5963 |
|
|
|
| 5964 |
|
|
cpu_arch = bfd_elf_get_obj_attr_int (globals->obfd, OBJ_ATTR_PROC,
|
| 5965 |
|
|
Tag_CPU_arch);
|
| 5966 |
|
|
|
| 5967 |
|
|
if (globals->fix_arm1176)
|
| 5968 |
|
|
{
|
| 5969 |
|
|
if (cpu_arch == TAG_CPU_ARCH_V6T2 || cpu_arch > TAG_CPU_ARCH_V6K)
|
| 5970 |
|
|
globals->use_blx = 1;
|
| 5971 |
|
|
}
|
| 5972 |
|
|
else
|
| 5973 |
|
|
{
|
| 5974 |
|
|
if (cpu_arch > TAG_CPU_ARCH_V4T)
|
| 5975 |
|
|
globals->use_blx = 1;
|
| 5976 |
|
|
}
|
| 5977 |
14 |
khays |
}
|
| 5978 |
|
|
|
| 5979 |
|
|
bfd_boolean
|
| 5980 |
|
|
bfd_elf32_arm_process_before_allocation (bfd *abfd,
|
| 5981 |
|
|
struct bfd_link_info *link_info)
|
| 5982 |
|
|
{
|
| 5983 |
|
|
Elf_Internal_Shdr *symtab_hdr;
|
| 5984 |
|
|
Elf_Internal_Rela *internal_relocs = NULL;
|
| 5985 |
|
|
Elf_Internal_Rela *irel, *irelend;
|
| 5986 |
|
|
bfd_byte *contents = NULL;
|
| 5987 |
|
|
|
| 5988 |
|
|
asection *sec;
|
| 5989 |
|
|
struct elf32_arm_link_hash_table *globals;
|
| 5990 |
|
|
|
| 5991 |
|
|
/* If we are only performing a partial link do not bother
|
| 5992 |
|
|
to construct any glue. */
|
| 5993 |
|
|
if (link_info->relocatable)
|
| 5994 |
|
|
return TRUE;
|
| 5995 |
|
|
|
| 5996 |
|
|
/* Here we have a bfd that is to be included on the link. We have a
|
| 5997 |
|
|
hook to do reloc rummaging, before section sizes are nailed down. */
|
| 5998 |
|
|
globals = elf32_arm_hash_table (link_info);
|
| 5999 |
|
|
BFD_ASSERT (globals != NULL);
|
| 6000 |
|
|
|
| 6001 |
|
|
check_use_blx (globals);
|
| 6002 |
|
|
|
| 6003 |
|
|
if (globals->byteswap_code && !bfd_big_endian (abfd))
|
| 6004 |
|
|
{
|
| 6005 |
|
|
_bfd_error_handler (_("%B: BE8 images only valid in big-endian mode."),
|
| 6006 |
|
|
abfd);
|
| 6007 |
|
|
return FALSE;
|
| 6008 |
|
|
}
|
| 6009 |
|
|
|
| 6010 |
|
|
/* PR 5398: If we have not decided to include any loadable sections in
|
| 6011 |
|
|
the output then we will not have a glue owner bfd. This is OK, it
|
| 6012 |
|
|
just means that there is nothing else for us to do here. */
|
| 6013 |
|
|
if (globals->bfd_of_glue_owner == NULL)
|
| 6014 |
|
|
return TRUE;
|
| 6015 |
|
|
|
| 6016 |
|
|
/* Rummage around all the relocs and map the glue vectors. */
|
| 6017 |
|
|
sec = abfd->sections;
|
| 6018 |
|
|
|
| 6019 |
|
|
if (sec == NULL)
|
| 6020 |
|
|
return TRUE;
|
| 6021 |
|
|
|
| 6022 |
|
|
for (; sec != NULL; sec = sec->next)
|
| 6023 |
|
|
{
|
| 6024 |
|
|
if (sec->reloc_count == 0)
|
| 6025 |
|
|
continue;
|
| 6026 |
|
|
|
| 6027 |
|
|
if ((sec->flags & SEC_EXCLUDE) != 0)
|
| 6028 |
|
|
continue;
|
| 6029 |
|
|
|
| 6030 |
|
|
symtab_hdr = & elf_symtab_hdr (abfd);
|
| 6031 |
|
|
|
| 6032 |
|
|
/* Load the relocs. */
|
| 6033 |
|
|
internal_relocs
|
| 6034 |
|
|
= _bfd_elf_link_read_relocs (abfd, sec, NULL, NULL, FALSE);
|
| 6035 |
|
|
|
| 6036 |
|
|
if (internal_relocs == NULL)
|
| 6037 |
|
|
goto error_return;
|
| 6038 |
|
|
|
| 6039 |
|
|
irelend = internal_relocs + sec->reloc_count;
|
| 6040 |
|
|
for (irel = internal_relocs; irel < irelend; irel++)
|
| 6041 |
|
|
{
|
| 6042 |
|
|
long r_type;
|
| 6043 |
|
|
unsigned long r_index;
|
| 6044 |
|
|
|
| 6045 |
|
|
struct elf_link_hash_entry *h;
|
| 6046 |
|
|
|
| 6047 |
|
|
r_type = ELF32_R_TYPE (irel->r_info);
|
| 6048 |
|
|
r_index = ELF32_R_SYM (irel->r_info);
|
| 6049 |
|
|
|
| 6050 |
|
|
/* These are the only relocation types we care about. */
|
| 6051 |
|
|
if ( r_type != R_ARM_PC24
|
| 6052 |
|
|
&& (r_type != R_ARM_V4BX || globals->fix_v4bx < 2))
|
| 6053 |
|
|
continue;
|
| 6054 |
|
|
|
| 6055 |
|
|
/* Get the section contents if we haven't done so already. */
|
| 6056 |
|
|
if (contents == NULL)
|
| 6057 |
|
|
{
|
| 6058 |
|
|
/* Get cached copy if it exists. */
|
| 6059 |
|
|
if (elf_section_data (sec)->this_hdr.contents != NULL)
|
| 6060 |
|
|
contents = elf_section_data (sec)->this_hdr.contents;
|
| 6061 |
|
|
else
|
| 6062 |
|
|
{
|
| 6063 |
|
|
/* Go get them off disk. */
|
| 6064 |
|
|
if (! bfd_malloc_and_get_section (abfd, sec, &contents))
|
| 6065 |
|
|
goto error_return;
|
| 6066 |
|
|
}
|
| 6067 |
|
|
}
|
| 6068 |
|
|
|
| 6069 |
|
|
if (r_type == R_ARM_V4BX)
|
| 6070 |
|
|
{
|
| 6071 |
|
|
int reg;
|
| 6072 |
|
|
|
| 6073 |
|
|
reg = bfd_get_32 (abfd, contents + irel->r_offset) & 0xf;
|
| 6074 |
|
|
record_arm_bx_glue (link_info, reg);
|
| 6075 |
|
|
continue;
|
| 6076 |
|
|
}
|
| 6077 |
|
|
|
| 6078 |
|
|
/* If the relocation is not against a symbol it cannot concern us. */
|
| 6079 |
|
|
h = NULL;
|
| 6080 |
|
|
|
| 6081 |
|
|
/* We don't care about local symbols. */
|
| 6082 |
|
|
if (r_index < symtab_hdr->sh_info)
|
| 6083 |
|
|
continue;
|
| 6084 |
|
|
|
| 6085 |
|
|
/* This is an external symbol. */
|
| 6086 |
|
|
r_index -= symtab_hdr->sh_info;
|
| 6087 |
|
|
h = (struct elf_link_hash_entry *)
|
| 6088 |
|
|
elf_sym_hashes (abfd)[r_index];
|
| 6089 |
|
|
|
| 6090 |
|
|
/* If the relocation is against a static symbol it must be within
|
| 6091 |
|
|
the current section and so cannot be a cross ARM/Thumb relocation. */
|
| 6092 |
|
|
if (h == NULL)
|
| 6093 |
|
|
continue;
|
| 6094 |
|
|
|
| 6095 |
|
|
/* If the call will go through a PLT entry then we do not need
|
| 6096 |
|
|
glue. */
|
| 6097 |
|
|
if (globals->root.splt != NULL && h->plt.offset != (bfd_vma) -1)
|
| 6098 |
|
|
continue;
|
| 6099 |
|
|
|
| 6100 |
|
|
switch (r_type)
|
| 6101 |
|
|
{
|
| 6102 |
|
|
case R_ARM_PC24:
|
| 6103 |
|
|
/* This one is a call from arm code. We need to look up
|
| 6104 |
|
|
the target of the call. If it is a thumb target, we
|
| 6105 |
|
|
insert glue. */
|
| 6106 |
|
|
if (h->target_internal == ST_BRANCH_TO_THUMB)
|
| 6107 |
|
|
record_arm_to_thumb_glue (link_info, h);
|
| 6108 |
|
|
break;
|
| 6109 |
|
|
|
| 6110 |
|
|
default:
|
| 6111 |
|
|
abort ();
|
| 6112 |
|
|
}
|
| 6113 |
|
|
}
|
| 6114 |
|
|
|
| 6115 |
|
|
if (contents != NULL
|
| 6116 |
|
|
&& elf_section_data (sec)->this_hdr.contents != contents)
|
| 6117 |
|
|
free (contents);
|
| 6118 |
|
|
contents = NULL;
|
| 6119 |
|
|
|
| 6120 |
|
|
if (internal_relocs != NULL
|
| 6121 |
|
|
&& elf_section_data (sec)->relocs != internal_relocs)
|
| 6122 |
|
|
free (internal_relocs);
|
| 6123 |
|
|
internal_relocs = NULL;
|
| 6124 |
|
|
}
|
| 6125 |
|
|
|
| 6126 |
|
|
return TRUE;
|
| 6127 |
|
|
|
| 6128 |
|
|
error_return:
|
| 6129 |
|
|
if (contents != NULL
|
| 6130 |
|
|
&& elf_section_data (sec)->this_hdr.contents != contents)
|
| 6131 |
|
|
free (contents);
|
| 6132 |
|
|
if (internal_relocs != NULL
|
| 6133 |
|
|
&& elf_section_data (sec)->relocs != internal_relocs)
|
| 6134 |
|
|
free (internal_relocs);
|
| 6135 |
|
|
|
| 6136 |
|
|
return FALSE;
|
| 6137 |
|
|
}
|
| 6138 |
|
|
#endif
|
| 6139 |
|
|
|
| 6140 |
|
|
|
| 6141 |
|
|
/* Initialise maps of ARM/Thumb/data for input BFDs. */
|
| 6142 |
|
|
|
| 6143 |
|
|
void
|
| 6144 |
|
|
bfd_elf32_arm_init_maps (bfd *abfd)
|
| 6145 |
|
|
{
|
| 6146 |
|
|
Elf_Internal_Sym *isymbuf;
|
| 6147 |
|
|
Elf_Internal_Shdr *hdr;
|
| 6148 |
|
|
unsigned int i, localsyms;
|
| 6149 |
|
|
|
| 6150 |
|
|
/* PR 7093: Make sure that we are dealing with an arm elf binary. */
|
| 6151 |
|
|
if (! is_arm_elf (abfd))
|
| 6152 |
|
|
return;
|
| 6153 |
|
|
|
| 6154 |
|
|
if ((abfd->flags & DYNAMIC) != 0)
|
| 6155 |
|
|
return;
|
| 6156 |
|
|
|
| 6157 |
|
|
hdr = & elf_symtab_hdr (abfd);
|
| 6158 |
|
|
localsyms = hdr->sh_info;
|
| 6159 |
|
|
|
| 6160 |
|
|
/* Obtain a buffer full of symbols for this BFD. The hdr->sh_info field
|
| 6161 |
|
|
should contain the number of local symbols, which should come before any
|
| 6162 |
|
|
global symbols. Mapping symbols are always local. */
|
| 6163 |
|
|
isymbuf = bfd_elf_get_elf_syms (abfd, hdr, localsyms, 0, NULL, NULL,
|
| 6164 |
|
|
NULL);
|
| 6165 |
|
|
|
| 6166 |
|
|
/* No internal symbols read? Skip this BFD. */
|
| 6167 |
|
|
if (isymbuf == NULL)
|
| 6168 |
|
|
return;
|
| 6169 |
|
|
|
| 6170 |
|
|
for (i = 0; i < localsyms; i++)
|
| 6171 |
|
|
{
|
| 6172 |
|
|
Elf_Internal_Sym *isym = &isymbuf[i];
|
| 6173 |
|
|
asection *sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
|
| 6174 |
|
|
const char *name;
|
| 6175 |
|
|
|
| 6176 |
|
|
if (sec != NULL
|
| 6177 |
|
|
&& ELF_ST_BIND (isym->st_info) == STB_LOCAL)
|
| 6178 |
|
|
{
|
| 6179 |
|
|
name = bfd_elf_string_from_elf_section (abfd,
|
| 6180 |
|
|
hdr->sh_link, isym->st_name);
|
| 6181 |
|
|
|
| 6182 |
|
|
if (bfd_is_arm_special_symbol_name (name,
|
| 6183 |
|
|
BFD_ARM_SPECIAL_SYM_TYPE_MAP))
|
| 6184 |
|
|
elf32_arm_section_map_add (sec, name[1], isym->st_value);
|
| 6185 |
|
|
}
|
| 6186 |
|
|
}
|
| 6187 |
|
|
}
|
| 6188 |
|
|
|
| 6189 |
|
|
|
| 6190 |
|
|
/* Auto-select enabling of Cortex-A8 erratum fix if the user didn't explicitly
|
| 6191 |
|
|
say what they wanted. */
|
| 6192 |
|
|
|
| 6193 |
|
|
void
|
| 6194 |
|
|
bfd_elf32_arm_set_cortex_a8_fix (bfd *obfd, struct bfd_link_info *link_info)
|
| 6195 |
|
|
{
|
| 6196 |
|
|
struct elf32_arm_link_hash_table *globals = elf32_arm_hash_table (link_info);
|
| 6197 |
|
|
obj_attribute *out_attr = elf_known_obj_attributes_proc (obfd);
|
| 6198 |
|
|
|
| 6199 |
|
|
if (globals == NULL)
|
| 6200 |
|
|
return;
|
| 6201 |
|
|
|
| 6202 |
|
|
if (globals->fix_cortex_a8 == -1)
|
| 6203 |
|
|
{
|
| 6204 |
|
|
/* Turn on Cortex-A8 erratum workaround for ARMv7-A. */
|
| 6205 |
|
|
if (out_attr[Tag_CPU_arch].i == TAG_CPU_ARCH_V7
|
| 6206 |
|
|
&& (out_attr[Tag_CPU_arch_profile].i == 'A'
|
| 6207 |
|
|
|| out_attr[Tag_CPU_arch_profile].i == 0))
|
| 6208 |
|
|
globals->fix_cortex_a8 = 1;
|
| 6209 |
|
|
else
|
| 6210 |
|
|
globals->fix_cortex_a8 = 0;
|
| 6211 |
|
|
}
|
| 6212 |
|
|
}
|
| 6213 |
|
|
|
| 6214 |
|
|
|
| 6215 |
|
|
void
|
| 6216 |
|
|
bfd_elf32_arm_set_vfp11_fix (bfd *obfd, struct bfd_link_info *link_info)
|
| 6217 |
|
|
{
|
| 6218 |
|
|
struct elf32_arm_link_hash_table *globals = elf32_arm_hash_table (link_info);
|
| 6219 |
|
|
obj_attribute *out_attr = elf_known_obj_attributes_proc (obfd);
|
| 6220 |
|
|
|
| 6221 |
|
|
if (globals == NULL)
|
| 6222 |
|
|
return;
|
| 6223 |
|
|
/* We assume that ARMv7+ does not need the VFP11 denorm erratum fix. */
|
| 6224 |
|
|
if (out_attr[Tag_CPU_arch].i >= TAG_CPU_ARCH_V7)
|
| 6225 |
|
|
{
|
| 6226 |
|
|
switch (globals->vfp11_fix)
|
| 6227 |
|
|
{
|
| 6228 |
|
|
case BFD_ARM_VFP11_FIX_DEFAULT:
|
| 6229 |
|
|
case BFD_ARM_VFP11_FIX_NONE:
|
| 6230 |
|
|
globals->vfp11_fix = BFD_ARM_VFP11_FIX_NONE;
|
| 6231 |
|
|
break;
|
| 6232 |
|
|
|
| 6233 |
|
|
default:
|
| 6234 |
|
|
/* Give a warning, but do as the user requests anyway. */
|
| 6235 |
|
|
(*_bfd_error_handler) (_("%B: warning: selected VFP11 erratum "
|
| 6236 |
|
|
"workaround is not necessary for target architecture"), obfd);
|
| 6237 |
|
|
}
|
| 6238 |
|
|
}
|
| 6239 |
|
|
else if (globals->vfp11_fix == BFD_ARM_VFP11_FIX_DEFAULT)
|
| 6240 |
|
|
/* For earlier architectures, we might need the workaround, but do not
|
| 6241 |
|
|
enable it by default. If users is running with broken hardware, they
|
| 6242 |
|
|
must enable the erratum fix explicitly. */
|
| 6243 |
|
|
globals->vfp11_fix = BFD_ARM_VFP11_FIX_NONE;
|
| 6244 |
|
|
}
|
| 6245 |
|
|
|
| 6246 |
|
|
|
| 6247 |
|
|
enum bfd_arm_vfp11_pipe
|
| 6248 |
|
|
{
|
| 6249 |
|
|
VFP11_FMAC,
|
| 6250 |
|
|
VFP11_LS,
|
| 6251 |
|
|
VFP11_DS,
|
| 6252 |
|
|
VFP11_BAD
|
| 6253 |
|
|
};
|
| 6254 |
|
|
|
| 6255 |
|
|
/* Return a VFP register number. This is encoded as RX:X for single-precision
|
| 6256 |
|
|
registers, or X:RX for double-precision registers, where RX is the group of
|
| 6257 |
|
|
four bits in the instruction encoding and X is the single extension bit.
|
| 6258 |
|
|
RX and X fields are specified using their lowest (starting) bit. The return
|
| 6259 |
|
|
value is:
|
| 6260 |
|
|
|
| 6261 |
|
|
0...31: single-precision registers s0...s31
|
| 6262 |
|
|
32...63: double-precision registers d0...d31.
|
| 6263 |
|
|
|
| 6264 |
|
|
Although X should be zero for VFP11 (encoding d0...d15 only), we might
|
| 6265 |
|
|
encounter VFP3 instructions, so we allow the full range for DP registers. */
|
| 6266 |
|
|
|
| 6267 |
|
|
static unsigned int
|
| 6268 |
|
|
bfd_arm_vfp11_regno (unsigned int insn, bfd_boolean is_double, unsigned int rx,
|
| 6269 |
|
|
unsigned int x)
|
| 6270 |
|
|
{
|
| 6271 |
|
|
if (is_double)
|
| 6272 |
|
|
return (((insn >> rx) & 0xf) | (((insn >> x) & 1) << 4)) + 32;
|
| 6273 |
|
|
else
|
| 6274 |
|
|
return (((insn >> rx) & 0xf) << 1) | ((insn >> x) & 1);
|
| 6275 |
|
|
}
|
| 6276 |
|
|
|
| 6277 |
|
|
/* Set bits in *WMASK according to a register number REG as encoded by
|
| 6278 |
|
|
bfd_arm_vfp11_regno(). Ignore d16-d31. */
|
| 6279 |
|
|
|
| 6280 |
|
|
static void
|
| 6281 |
|
|
bfd_arm_vfp11_write_mask (unsigned int *wmask, unsigned int reg)
|
| 6282 |
|
|
{
|
| 6283 |
|
|
if (reg < 32)
|
| 6284 |
|
|
*wmask |= 1 << reg;
|
| 6285 |
|
|
else if (reg < 48)
|
| 6286 |
|
|
*wmask |= 3 << ((reg - 32) * 2);
|
| 6287 |
|
|
}
|
| 6288 |
|
|
|
| 6289 |
|
|
/* Return TRUE if WMASK overwrites anything in REGS. */
|
| 6290 |
|
|
|
| 6291 |
|
|
static bfd_boolean
|
| 6292 |
|
|
bfd_arm_vfp11_antidependency (unsigned int wmask, int *regs, int numregs)
|
| 6293 |
|
|
{
|
| 6294 |
|
|
int i;
|
| 6295 |
|
|
|
| 6296 |
|
|
for (i = 0; i < numregs; i++)
|
| 6297 |
|
|
{
|
| 6298 |
|
|
unsigned int reg = regs[i];
|
| 6299 |
|
|
|
| 6300 |
|
|
if (reg < 32 && (wmask & (1 << reg)) != 0)
|
| 6301 |
|
|
return TRUE;
|
| 6302 |
|
|
|
| 6303 |
|
|
reg -= 32;
|
| 6304 |
|
|
|
| 6305 |
|
|
if (reg >= 16)
|
| 6306 |
|
|
continue;
|
| 6307 |
|
|
|
| 6308 |
|
|
if ((wmask & (3 << (reg * 2))) != 0)
|
| 6309 |
|
|
return TRUE;
|
| 6310 |
|
|
}
|
| 6311 |
|
|
|
| 6312 |
|
|
return FALSE;
|
| 6313 |
|
|
}
|
| 6314 |
|
|
|
| 6315 |
|
|
/* In this function, we're interested in two things: finding input registers
|
| 6316 |
|
|
for VFP data-processing instructions, and finding the set of registers which
|
| 6317 |
|
|
arbitrary VFP instructions may write to. We use a 32-bit unsigned int to
|
| 6318 |
|
|
hold the written set, so FLDM etc. are easy to deal with (we're only
|
| 6319 |
|
|
interested in 32 SP registers or 16 dp registers, due to the VFP version
|
| 6320 |
|
|
implemented by the chip in question). DP registers are marked by setting
|
| 6321 |
|
|
both SP registers in the write mask). */
|
| 6322 |
|
|
|
| 6323 |
|
|
static enum bfd_arm_vfp11_pipe
|
| 6324 |
|
|
bfd_arm_vfp11_insn_decode (unsigned int insn, unsigned int *destmask, int *regs,
|
| 6325 |
|
|
int *numregs)
|
| 6326 |
|
|
{
|
| 6327 |
|
|
enum bfd_arm_vfp11_pipe vpipe = VFP11_BAD;
|
| 6328 |
|
|
bfd_boolean is_double = ((insn & 0xf00) == 0xb00) ? 1 : 0;
|
| 6329 |
|
|
|
| 6330 |
|
|
if ((insn & 0x0f000e10) == 0x0e000a00) /* A data-processing insn. */
|
| 6331 |
|
|
{
|
| 6332 |
|
|
unsigned int pqrs;
|
| 6333 |
|
|
unsigned int fd = bfd_arm_vfp11_regno (insn, is_double, 12, 22);
|
| 6334 |
|
|
unsigned int fm = bfd_arm_vfp11_regno (insn, is_double, 0, 5);
|
| 6335 |
|
|
|
| 6336 |
|
|
pqrs = ((insn & 0x00800000) >> 20)
|
| 6337 |
|
|
| ((insn & 0x00300000) >> 19)
|
| 6338 |
|
|
| ((insn & 0x00000040) >> 6);
|
| 6339 |
|
|
|
| 6340 |
|
|
switch (pqrs)
|
| 6341 |
|
|
{
|
| 6342 |
|
|
case 0: /* fmac[sd]. */
|
| 6343 |
|
|
case 1: /* fnmac[sd]. */
|
| 6344 |
|
|
case 2: /* fmsc[sd]. */
|
| 6345 |
|
|
case 3: /* fnmsc[sd]. */
|
| 6346 |
|
|
vpipe = VFP11_FMAC;
|
| 6347 |
|
|
bfd_arm_vfp11_write_mask (destmask, fd);
|
| 6348 |
|
|
regs[0] = fd;
|
| 6349 |
|
|
regs[1] = bfd_arm_vfp11_regno (insn, is_double, 16, 7); /* Fn. */
|
| 6350 |
|
|
regs[2] = fm;
|
| 6351 |
|
|
*numregs = 3;
|
| 6352 |
|
|
break;
|
| 6353 |
|
|
|
| 6354 |
|
|
case 4: /* fmul[sd]. */
|
| 6355 |
|
|
case 5: /* fnmul[sd]. */
|
| 6356 |
|
|
case 6: /* fadd[sd]. */
|
| 6357 |
|
|
case 7: /* fsub[sd]. */
|
| 6358 |
|
|
vpipe = VFP11_FMAC;
|
| 6359 |
|
|
goto vfp_binop;
|
| 6360 |
|
|
|
| 6361 |
|
|
case 8: /* fdiv[sd]. */
|
| 6362 |
|
|
vpipe = VFP11_DS;
|
| 6363 |
|
|
vfp_binop:
|
| 6364 |
|
|
bfd_arm_vfp11_write_mask (destmask, fd);
|
| 6365 |
|
|
regs[0] = bfd_arm_vfp11_regno (insn, is_double, 16, 7); /* Fn. */
|
| 6366 |
|
|
regs[1] = fm;
|
| 6367 |
|
|
*numregs = 2;
|
| 6368 |
|
|
break;
|
| 6369 |
|
|
|
| 6370 |
|
|
case 15: /* extended opcode. */
|
| 6371 |
|
|
{
|
| 6372 |
|
|
unsigned int extn = ((insn >> 15) & 0x1e)
|
| 6373 |
|
|
| ((insn >> 7) & 1);
|
| 6374 |
|
|
|
| 6375 |
|
|
switch (extn)
|
| 6376 |
|
|
{
|
| 6377 |
|
|
case 0: /* fcpy[sd]. */
|
| 6378 |
|
|
case 1: /* fabs[sd]. */
|
| 6379 |
|
|
case 2: /* fneg[sd]. */
|
| 6380 |
|
|
case 8: /* fcmp[sd]. */
|
| 6381 |
|
|
case 9: /* fcmpe[sd]. */
|
| 6382 |
|
|
case 10: /* fcmpz[sd]. */
|
| 6383 |
|
|
case 11: /* fcmpez[sd]. */
|
| 6384 |
|
|
case 16: /* fuito[sd]. */
|
| 6385 |
|
|
case 17: /* fsito[sd]. */
|
| 6386 |
|
|
case 24: /* ftoui[sd]. */
|
| 6387 |
|
|
case 25: /* ftouiz[sd]. */
|
| 6388 |
|
|
case 26: /* ftosi[sd]. */
|
| 6389 |
|
|
case 27: /* ftosiz[sd]. */
|
| 6390 |
|
|
/* These instructions will not bounce due to underflow. */
|
| 6391 |
|
|
*numregs = 0;
|
| 6392 |
|
|
vpipe = VFP11_FMAC;
|
| 6393 |
|
|
break;
|
| 6394 |
|
|
|
| 6395 |
|
|
case 3: /* fsqrt[sd]. */
|
| 6396 |
|
|
/* fsqrt cannot underflow, but it can (perhaps) overwrite
|
| 6397 |
|
|
registers to cause the erratum in previous instructions. */
|
| 6398 |
|
|
bfd_arm_vfp11_write_mask (destmask, fd);
|
| 6399 |
|
|
vpipe = VFP11_DS;
|
| 6400 |
|
|
break;
|
| 6401 |
|
|
|
| 6402 |
|
|
case 15: /* fcvt{ds,sd}. */
|
| 6403 |
|
|
{
|
| 6404 |
|
|
int rnum = 0;
|
| 6405 |
|
|
|
| 6406 |
|
|
bfd_arm_vfp11_write_mask (destmask, fd);
|
| 6407 |
|
|
|
| 6408 |
|
|
/* Only FCVTSD can underflow. */
|
| 6409 |
|
|
if ((insn & 0x100) != 0)
|
| 6410 |
|
|
regs[rnum++] = fm;
|
| 6411 |
|
|
|
| 6412 |
|
|
*numregs = rnum;
|
| 6413 |
|
|
|
| 6414 |
|
|
vpipe = VFP11_FMAC;
|
| 6415 |
|
|
}
|
| 6416 |
|
|
break;
|
| 6417 |
|
|
|
| 6418 |
|
|
default:
|
| 6419 |
|
|
return VFP11_BAD;
|
| 6420 |
|
|
}
|
| 6421 |
|
|
}
|
| 6422 |
|
|
break;
|
| 6423 |
|
|
|
| 6424 |
|
|
default:
|
| 6425 |
|
|
return VFP11_BAD;
|
| 6426 |
|
|
}
|
| 6427 |
|
|
}
|
| 6428 |
|
|
/* Two-register transfer. */
|
| 6429 |
|
|
else if ((insn & 0x0fe00ed0) == 0x0c400a10)
|
| 6430 |
|
|
{
|
| 6431 |
|
|
unsigned int fm = bfd_arm_vfp11_regno (insn, is_double, 0, 5);
|
| 6432 |
|
|
|
| 6433 |
|
|
if ((insn & 0x100000) == 0)
|
| 6434 |
|
|
{
|
| 6435 |
|
|
if (is_double)
|
| 6436 |
|
|
bfd_arm_vfp11_write_mask (destmask, fm);
|
| 6437 |
|
|
else
|
| 6438 |
|
|
{
|
| 6439 |
|
|
bfd_arm_vfp11_write_mask (destmask, fm);
|
| 6440 |
|
|
bfd_arm_vfp11_write_mask (destmask, fm + 1);
|
| 6441 |
|
|
}
|
| 6442 |
|
|
}
|
| 6443 |
|
|
|
| 6444 |
|
|
vpipe = VFP11_LS;
|
| 6445 |
|
|
}
|
| 6446 |
|
|
else if ((insn & 0x0e100e00) == 0x0c100a00) /* A load insn. */
|
| 6447 |
|
|
{
|
| 6448 |
|
|
int fd = bfd_arm_vfp11_regno (insn, is_double, 12, 22);
|
| 6449 |
|
|
unsigned int puw = ((insn >> 21) & 0x1) | (((insn >> 23) & 3) << 1);
|
| 6450 |
|
|
|
| 6451 |
|
|
switch (puw)
|
| 6452 |
|
|
{
|
| 6453 |
|
|
case 0: /* Two-reg transfer. We should catch these above. */
|
| 6454 |
|
|
abort ();
|
| 6455 |
|
|
|
| 6456 |
|
|
case 2: /* fldm[sdx]. */
|
| 6457 |
|
|
case 3:
|
| 6458 |
|
|
case 5:
|
| 6459 |
|
|
{
|
| 6460 |
|
|
unsigned int i, offset = insn & 0xff;
|
| 6461 |
|
|
|
| 6462 |
|
|
if (is_double)
|
| 6463 |
|
|
offset >>= 1;
|
| 6464 |
|
|
|
| 6465 |
|
|
for (i = fd; i < fd + offset; i++)
|
| 6466 |
|
|
bfd_arm_vfp11_write_mask (destmask, i);
|
| 6467 |
|
|
}
|
| 6468 |
|
|
break;
|
| 6469 |
|
|
|
| 6470 |
|
|
case 4: /* fld[sd]. */
|
| 6471 |
|
|
case 6:
|
| 6472 |
|
|
bfd_arm_vfp11_write_mask (destmask, fd);
|
| 6473 |
|
|
break;
|
| 6474 |
|
|
|
| 6475 |
|
|
default:
|
| 6476 |
|
|
return VFP11_BAD;
|
| 6477 |
|
|
}
|
| 6478 |
|
|
|
| 6479 |
|
|
vpipe = VFP11_LS;
|
| 6480 |
|
|
}
|
| 6481 |
|
|
/* Single-register transfer. Note L==0. */
|
| 6482 |
|
|
else if ((insn & 0x0f100e10) == 0x0e000a10)
|
| 6483 |
|
|
{
|
| 6484 |
|
|
unsigned int opcode = (insn >> 21) & 7;
|
| 6485 |
|
|
unsigned int fn = bfd_arm_vfp11_regno (insn, is_double, 16, 7);
|
| 6486 |
|
|
|
| 6487 |
|
|
switch (opcode)
|
| 6488 |
|
|
{
|
| 6489 |
|
|
case 0: /* fmsr/fmdlr. */
|
| 6490 |
|
|
case 1: /* fmdhr. */
|
| 6491 |
|
|
/* Mark fmdhr and fmdlr as writing to the whole of the DP
|
| 6492 |
|
|
destination register. I don't know if this is exactly right,
|
| 6493 |
|
|
but it is the conservative choice. */
|
| 6494 |
|
|
bfd_arm_vfp11_write_mask (destmask, fn);
|
| 6495 |
|
|
break;
|
| 6496 |
|
|
|
| 6497 |
|
|
case 7: /* fmxr. */
|
| 6498 |
|
|
break;
|
| 6499 |
|
|
}
|
| 6500 |
|
|
|
| 6501 |
|
|
vpipe = VFP11_LS;
|
| 6502 |
|
|
}
|
| 6503 |
|
|
|
| 6504 |
|
|
return vpipe;
|
| 6505 |
|
|
}
|
| 6506 |
|
|
|
| 6507 |
|
|
|
| 6508 |
|
|
static int elf32_arm_compare_mapping (const void * a, const void * b);
|
| 6509 |
|
|
|
| 6510 |
|
|
|
| 6511 |
|
|
/* Look for potentially-troublesome code sequences which might trigger the
|
| 6512 |
|
|
VFP11 denormal/antidependency erratum. See, e.g., the ARM1136 errata sheet
|
| 6513 |
|
|
(available from ARM) for details of the erratum. A short version is
|
| 6514 |
|
|
described in ld.texinfo. */
|
| 6515 |
|
|
|
| 6516 |
|
|
bfd_boolean
|
| 6517 |
|
|
bfd_elf32_arm_vfp11_erratum_scan (bfd *abfd, struct bfd_link_info *link_info)
|
| 6518 |
|
|
{
|
| 6519 |
|
|
asection *sec;
|
| 6520 |
|
|
bfd_byte *contents = NULL;
|
| 6521 |
|
|
int state = 0;
|
| 6522 |
|
|
int regs[3], numregs = 0;
|
| 6523 |
|
|
struct elf32_arm_link_hash_table *globals = elf32_arm_hash_table (link_info);
|
| 6524 |
|
|
int use_vector = (globals->vfp11_fix == BFD_ARM_VFP11_FIX_VECTOR);
|
| 6525 |
|
|
|
| 6526 |
|
|
if (globals == NULL)
|
| 6527 |
|
|
return FALSE;
|
| 6528 |
|
|
|
| 6529 |
|
|
/* We use a simple FSM to match troublesome VFP11 instruction sequences.
|
| 6530 |
|
|
The states transition as follows:
|
| 6531 |
|
|
|
| 6532 |
|
|
|
| 6533 |
|
|
A VFP FMAC-pipeline instruction has been seen. Fill
|
| 6534 |
|
|
regs[0]..regs[numregs-1] with its input operands. Remember this
|
| 6535 |
|
|
instruction in 'first_fmac'.
|
| 6536 |
|
|
|
| 6537 |
|
|
1 -> 2
|
| 6538 |
|
|
Any instruction, except for a VFP instruction which overwrites
|
| 6539 |
|
|
regs[*].
|
| 6540 |
|
|
|
| 6541 |
|
|
1 -> 3 [ -> 0 ] or
|
| 6542 |
|
|
2 -> 3 [ -> 0 ]
|
| 6543 |
|
|
A VFP instruction has been seen which overwrites any of regs[*].
|
| 6544 |
|
|
We must make a veneer! Reset state to 0 before examining next
|
| 6545 |
|
|
instruction.
|
| 6546 |
|
|
|
| 6547 |
|
|
2 -> 0
|
| 6548 |
|
|
If we fail to match anything in state 2, reset to state 0 and reset
|
| 6549 |
|
|
the instruction pointer to the instruction after 'first_fmac'.
|
| 6550 |
|
|
|
| 6551 |
|
|
If the VFP11 vector mode is in use, there must be at least two unrelated
|
| 6552 |
|
|
instructions between anti-dependent VFP11 instructions to properly avoid
|
| 6553 |
|
|
triggering the erratum, hence the use of the extra state 1. */
|
| 6554 |
|
|
|
| 6555 |
|
|
/* If we are only performing a partial link do not bother
|
| 6556 |
|
|
to construct any glue. */
|
| 6557 |
|
|
if (link_info->relocatable)
|
| 6558 |
|
|
return TRUE;
|
| 6559 |
|
|
|
| 6560 |
|
|
/* Skip if this bfd does not correspond to an ELF image. */
|
| 6561 |
|
|
if (! is_arm_elf (abfd))
|
| 6562 |
|
|
return TRUE;
|
| 6563 |
|
|
|
| 6564 |
|
|
/* We should have chosen a fix type by the time we get here. */
|
| 6565 |
|
|
BFD_ASSERT (globals->vfp11_fix != BFD_ARM_VFP11_FIX_DEFAULT);
|
| 6566 |
|
|
|
| 6567 |
|
|
if (globals->vfp11_fix == BFD_ARM_VFP11_FIX_NONE)
|
| 6568 |
|
|
return TRUE;
|
| 6569 |
|
|
|
| 6570 |
|
|
/* Skip this BFD if it corresponds to an executable or dynamic object. */
|
| 6571 |
|
|
if ((abfd->flags & (EXEC_P | DYNAMIC)) != 0)
|
| 6572 |
|
|
return TRUE;
|
| 6573 |
|
|
|
| 6574 |
|
|
for (sec = abfd->sections; sec != NULL; sec = sec->next)
|
| 6575 |
|
|
{
|
| 6576 |
|
|
unsigned int i, span, first_fmac = 0, veneer_of_insn = 0;
|
| 6577 |
|
|
struct _arm_elf_section_data *sec_data;
|
| 6578 |
|
|
|
| 6579 |
|
|
/* If we don't have executable progbits, we're not interested in this
|
| 6580 |
|
|
section. Also skip if section is to be excluded. */
|
| 6581 |
|
|
if (elf_section_type (sec) != SHT_PROGBITS
|
| 6582 |
|
|
|| (elf_section_flags (sec) & SHF_EXECINSTR) == 0
|
| 6583 |
|
|
|| (sec->flags & SEC_EXCLUDE) != 0
|
| 6584 |
|
|
|| sec->sec_info_type == ELF_INFO_TYPE_JUST_SYMS
|
| 6585 |
|
|
|| sec->output_section == bfd_abs_section_ptr
|
| 6586 |
|
|
|| strcmp (sec->name, VFP11_ERRATUM_VENEER_SECTION_NAME) == 0)
|
| 6587 |
|
|
continue;
|
| 6588 |
|
|
|
| 6589 |
|
|
sec_data = elf32_arm_section_data (sec);
|
| 6590 |
|
|
|
| 6591 |
|
|
if (sec_data->mapcount == 0)
|
| 6592 |
|
|
continue;
|
| 6593 |
|
|
|
| 6594 |
|
|
if (elf_section_data (sec)->this_hdr.contents != NULL)
|
| 6595 |
|
|
contents = elf_section_data (sec)->this_hdr.contents;
|
| 6596 |
|
|
else if (! bfd_malloc_and_get_section (abfd, sec, &contents))
|
| 6597 |
|
|
goto error_return;
|
| 6598 |
|
|
|
| 6599 |
|
|
qsort (sec_data->map, sec_data->mapcount, sizeof (elf32_arm_section_map),
|
| 6600 |
|
|
elf32_arm_compare_mapping);
|
| 6601 |
|
|
|
| 6602 |
|
|
for (span = 0; span < sec_data->mapcount; span++)
|
| 6603 |
|
|
{
|
| 6604 |
|
|
unsigned int span_start = sec_data->map[span].vma;
|
| 6605 |
|
|
unsigned int span_end = (span == sec_data->mapcount - 1)
|
| 6606 |
|
|
? sec->size : sec_data->map[span + 1].vma;
|
| 6607 |
|
|
char span_type = sec_data->map[span].type;
|
| 6608 |
|
|
|
| 6609 |
|
|
/* FIXME: Only ARM mode is supported at present. We may need to
|
| 6610 |
|
|
support Thumb-2 mode also at some point. */
|
| 6611 |
|
|
if (span_type != 'a')
|
| 6612 |
|
|
continue;
|
| 6613 |
|
|
|
| 6614 |
|
|
for (i = span_start; i < span_end;)
|
| 6615 |
|
|
{
|
| 6616 |
|
|
unsigned int next_i = i + 4;
|
| 6617 |
|
|
unsigned int insn = bfd_big_endian (abfd)
|
| 6618 |
|
|
? (contents[i] << 24)
|
| 6619 |
|
|
| (contents[i + 1] << 16)
|
| 6620 |
|
|
| (contents[i + 2] << 8)
|
| 6621 |
|
|
| contents[i + 3]
|
| 6622 |
|
|
: (contents[i + 3] << 24)
|
| 6623 |
|
|
| (contents[i + 2] << 16)
|
| 6624 |
|
|
| (contents[i + 1] << 8)
|
| 6625 |
|
|
| contents[i];
|
| 6626 |
|
|
unsigned int writemask = 0;
|
| 6627 |
|
|
enum bfd_arm_vfp11_pipe vpipe;
|
| 6628 |
|
|
|
| 6629 |
|
|
switch (state)
|
| 6630 |
|
|
{
|
| 6631 |
|
|
case 0:
|
| 6632 |
|
|
vpipe = bfd_arm_vfp11_insn_decode (insn, &writemask, regs,
|
| 6633 |
|
|
&numregs);
|
| 6634 |
|
|
/* I'm assuming the VFP11 erratum can trigger with denorm
|
| 6635 |
|
|
operands on either the FMAC or the DS pipeline. This might
|
| 6636 |
|
|
lead to slightly overenthusiastic veneer insertion. */
|
| 6637 |
|
|
if (vpipe == VFP11_FMAC || vpipe == VFP11_DS)
|
| 6638 |
|
|
{
|
| 6639 |
|
|
state = use_vector ? 1 : 2;
|
| 6640 |
|
|
first_fmac = i;
|
| 6641 |
|
|
veneer_of_insn = insn;
|
| 6642 |
|
|
}
|
| 6643 |
|
|
break;
|
| 6644 |
|
|
|
| 6645 |
|
|
case 1:
|
| 6646 |
|
|
{
|
| 6647 |
|
|
int other_regs[3], other_numregs;
|
| 6648 |
|
|
vpipe = bfd_arm_vfp11_insn_decode (insn, &writemask,
|
| 6649 |
|
|
other_regs,
|
| 6650 |
|
|
&other_numregs);
|
| 6651 |
|
|
if (vpipe != VFP11_BAD
|
| 6652 |
|
|
&& bfd_arm_vfp11_antidependency (writemask, regs,
|
| 6653 |
|
|
numregs))
|
| 6654 |
|
|
state = 3;
|
| 6655 |
|
|
else
|
| 6656 |
|
|
state = 2;
|
| 6657 |
|
|
}
|
| 6658 |
|
|
break;
|
| 6659 |
|
|
|
| 6660 |
|
|
case 2:
|
| 6661 |
|
|
{
|
| 6662 |
|
|
int other_regs[3], other_numregs;
|
| 6663 |
|
|
vpipe = bfd_arm_vfp11_insn_decode (insn, &writemask,
|
| 6664 |
|
|
other_regs,
|
| 6665 |
|
|
&other_numregs);
|
| 6666 |
|
|
if (vpipe != VFP11_BAD
|
| 6667 |
|
|
&& bfd_arm_vfp11_antidependency (writemask, regs,
|
| 6668 |
|
|
numregs))
|
| 6669 |
|
|
state = 3;
|
| 6670 |
|
|
else
|
| 6671 |
|
|
{
|
| 6672 |
|
|
state = 0;
|
| 6673 |
|
|
next_i = first_fmac + 4;
|
| 6674 |
|
|
}
|
| 6675 |
|
|
}
|
| 6676 |
|
|
break;
|
| 6677 |
|
|
|
| 6678 |
|
|
case 3:
|
| 6679 |
|
|
abort (); /* Should be unreachable. */
|
| 6680 |
|
|
}
|
| 6681 |
|
|
|
| 6682 |
|
|
if (state == 3)
|
| 6683 |
|
|
{
|
| 6684 |
|
|
elf32_vfp11_erratum_list *newerr =(elf32_vfp11_erratum_list *)
|
| 6685 |
|
|
bfd_zmalloc (sizeof (elf32_vfp11_erratum_list));
|
| 6686 |
|
|
|
| 6687 |
|
|
elf32_arm_section_data (sec)->erratumcount += 1;
|
| 6688 |
|
|
|
| 6689 |
|
|
newerr->u.b.vfp_insn = veneer_of_insn;
|
| 6690 |
|
|
|
| 6691 |
|
|
switch (span_type)
|
| 6692 |
|
|
{
|
| 6693 |
|
|
case 'a':
|
| 6694 |
|
|
newerr->type = VFP11_ERRATUM_BRANCH_TO_ARM_VENEER;
|
| 6695 |
|
|
break;
|
| 6696 |
|
|
|
| 6697 |
|
|
default:
|
| 6698 |
|
|
abort ();
|
| 6699 |
|
|
}
|
| 6700 |
|
|
|
| 6701 |
|
|
record_vfp11_erratum_veneer (link_info, newerr, abfd, sec,
|
| 6702 |
|
|
first_fmac);
|
| 6703 |
|
|
|
| 6704 |
|
|
newerr->vma = -1;
|
| 6705 |
|
|
|
| 6706 |
|
|
newerr->next = sec_data->erratumlist;
|
| 6707 |
|
|
sec_data->erratumlist = newerr;
|
| 6708 |
|
|
|
| 6709 |
|
|
state = 0;
|
| 6710 |
|
|
}
|
| 6711 |
|
|
|
| 6712 |
|
|
i = next_i;
|
| 6713 |
|
|
}
|
| 6714 |
|
|
}
|
| 6715 |
|
|
|
| 6716 |
|
|
if (contents != NULL
|
| 6717 |
|
|
&& elf_section_data (sec)->this_hdr.contents != contents)
|
| 6718 |
|
|
free (contents);
|
| 6719 |
|
|
contents = NULL;
|
| 6720 |
|
|
}
|
| 6721 |
|
|
|
| 6722 |
|
|
return TRUE;
|
| 6723 |
|
|
|
| 6724 |
|
|
error_return:
|
| 6725 |
|
|
if (contents != NULL
|
| 6726 |
|
|
&& elf_section_data (sec)->this_hdr.contents != contents)
|
| 6727 |
|
|
free (contents);
|
| 6728 |
|
|
|
| 6729 |
|
|
return FALSE;
|
| 6730 |
|
|
}
|
| 6731 |
|
|
|
| 6732 |
|
|
/* Find virtual-memory addresses for VFP11 erratum veneers and return locations
|
| 6733 |
|
|
after sections have been laid out, using specially-named symbols. */
|
| 6734 |
|
|
|
| 6735 |
|
|
void
|
| 6736 |
|
|
bfd_elf32_arm_vfp11_fix_veneer_locations (bfd *abfd,
|
| 6737 |
|
|
struct bfd_link_info *link_info)
|
| 6738 |
|
|
{
|
| 6739 |
|
|
asection *sec;
|
| 6740 |
|
|
struct elf32_arm_link_hash_table *globals;
|
| 6741 |
|
|
char *tmp_name;
|
| 6742 |
|
|
|
| 6743 |
|
|
if (link_info->relocatable)
|
| 6744 |
|
|
return;
|
| 6745 |
|
|
|
| 6746 |
|
|
/* Skip if this bfd does not correspond to an ELF image. */
|
| 6747 |
|
|
if (! is_arm_elf (abfd))
|
| 6748 |
|
|
return;
|
| 6749 |
|
|
|
| 6750 |
|
|
globals = elf32_arm_hash_table (link_info);
|
| 6751 |
|
|
if (globals == NULL)
|
| 6752 |
|
|
return;
|
| 6753 |
|
|
|
| 6754 |
|
|
tmp_name = (char *) bfd_malloc ((bfd_size_type) strlen
|
| 6755 |
|
|
(VFP11_ERRATUM_VENEER_ENTRY_NAME) + 10);
|
| 6756 |
|
|
|
| 6757 |
|
|
for (sec = abfd->sections; sec != NULL; sec = sec->next)
|
| 6758 |
|
|
{
|
| 6759 |
|
|
struct _arm_elf_section_data *sec_data = elf32_arm_section_data (sec);
|
| 6760 |
|
|
elf32_vfp11_erratum_list *errnode = sec_data->erratumlist;
|
| 6761 |
|
|
|
| 6762 |
|
|
for (; errnode != NULL; errnode = errnode->next)
|
| 6763 |
|
|
{
|
| 6764 |
|
|
struct elf_link_hash_entry *myh;
|
| 6765 |
|
|
bfd_vma vma;
|
| 6766 |
|
|
|
| 6767 |
|
|
switch (errnode->type)
|
| 6768 |
|
|
{
|
| 6769 |
|
|
case VFP11_ERRATUM_BRANCH_TO_ARM_VENEER:
|
| 6770 |
|
|
case VFP11_ERRATUM_BRANCH_TO_THUMB_VENEER:
|
| 6771 |
|
|
/* Find veneer symbol. */
|
| 6772 |
|
|
sprintf (tmp_name, VFP11_ERRATUM_VENEER_ENTRY_NAME,
|
| 6773 |
|
|
errnode->u.b.veneer->u.v.id);
|
| 6774 |
|
|
|
| 6775 |
|
|
myh = elf_link_hash_lookup
|
| 6776 |
|
|
(&(globals)->root, tmp_name, FALSE, FALSE, TRUE);
|
| 6777 |
|
|
|
| 6778 |
|
|
if (myh == NULL)
|
| 6779 |
|
|
(*_bfd_error_handler) (_("%B: unable to find VFP11 veneer "
|
| 6780 |
|
|
"`%s'"), abfd, tmp_name);
|
| 6781 |
|
|
|
| 6782 |
|
|
vma = myh->root.u.def.section->output_section->vma
|
| 6783 |
|
|
+ myh->root.u.def.section->output_offset
|
| 6784 |
|
|
+ myh->root.u.def.value;
|
| 6785 |
|
|
|
| 6786 |
|
|
errnode->u.b.veneer->vma = vma;
|
| 6787 |
|
|
break;
|
| 6788 |
|
|
|
| 6789 |
|
|
case VFP11_ERRATUM_ARM_VENEER:
|
| 6790 |
|
|
case VFP11_ERRATUM_THUMB_VENEER:
|
| 6791 |
|
|
/* Find return location. */
|
| 6792 |
|
|
sprintf (tmp_name, VFP11_ERRATUM_VENEER_ENTRY_NAME "_r",
|
| 6793 |
|
|
errnode->u.v.id);
|
| 6794 |
|
|
|
| 6795 |
|
|
myh = elf_link_hash_lookup
|
| 6796 |
|
|
(&(globals)->root, tmp_name, FALSE, FALSE, TRUE);
|
| 6797 |
|
|
|
| 6798 |
|
|
if (myh == NULL)
|
| 6799 |
|
|
(*_bfd_error_handler) (_("%B: unable to find VFP11 veneer "
|
| 6800 |
|
|
"`%s'"), abfd, tmp_name);
|
| 6801 |
|
|
|
| 6802 |
|
|
vma = myh->root.u.def.section->output_section->vma
|
| 6803 |
|
|
+ myh->root.u.def.section->output_offset
|
| 6804 |
|
|
+ myh->root.u.def.value;
|
| 6805 |
|
|
|
| 6806 |
|
|
errnode->u.v.branch->vma = vma;
|
| 6807 |
|
|
break;
|
| 6808 |
|
|
|
| 6809 |
|
|
default:
|
| 6810 |
|
|
abort ();
|
| 6811 |
|
|
}
|
| 6812 |
|
|
}
|
| 6813 |
|
|
}
|
| 6814 |
|
|
|
| 6815 |
|
|
free (tmp_name);
|
| 6816 |
|
|
}
|
| 6817 |
|
|
|
| 6818 |
|
|
|
| 6819 |
|
|
/* Set target relocation values needed during linking. */
|
| 6820 |
|
|
|
| 6821 |
|
|
void
|
| 6822 |
|
|
bfd_elf32_arm_set_target_relocs (struct bfd *output_bfd,
|
| 6823 |
|
|
struct bfd_link_info *link_info,
|
| 6824 |
|
|
int target1_is_rel,
|
| 6825 |
|
|
char * target2_type,
|
| 6826 |
|
|
int fix_v4bx,
|
| 6827 |
|
|
int use_blx,
|
| 6828 |
|
|
bfd_arm_vfp11_fix vfp11_fix,
|
| 6829 |
|
|
int no_enum_warn, int no_wchar_warn,
|
| 6830 |
161 |
khays |
int pic_veneer, int fix_cortex_a8,
|
| 6831 |
|
|
int fix_arm1176)
|
| 6832 |
14 |
khays |
{
|
| 6833 |
|
|
struct elf32_arm_link_hash_table *globals;
|
| 6834 |
|
|
|
| 6835 |
|
|
globals = elf32_arm_hash_table (link_info);
|
| 6836 |
|
|
if (globals == NULL)
|
| 6837 |
|
|
return;
|
| 6838 |
|
|
|
| 6839 |
|
|
globals->target1_is_rel = target1_is_rel;
|
| 6840 |
|
|
if (strcmp (target2_type, "rel") == 0)
|
| 6841 |
|
|
globals->target2_reloc = R_ARM_REL32;
|
| 6842 |
|
|
else if (strcmp (target2_type, "abs") == 0)
|
| 6843 |
|
|
globals->target2_reloc = R_ARM_ABS32;
|
| 6844 |
|
|
else if (strcmp (target2_type, "got-rel") == 0)
|
| 6845 |
|
|
globals->target2_reloc = R_ARM_GOT_PREL;
|
| 6846 |
|
|
else
|
| 6847 |
|
|
{
|
| 6848 |
|
|
_bfd_error_handler (_("Invalid TARGET2 relocation type '%s'."),
|
| 6849 |
|
|
target2_type);
|
| 6850 |
|
|
}
|
| 6851 |
|
|
globals->fix_v4bx = fix_v4bx;
|
| 6852 |
|
|
globals->use_blx |= use_blx;
|
| 6853 |
|
|
globals->vfp11_fix = vfp11_fix;
|
| 6854 |
|
|
globals->pic_veneer = pic_veneer;
|
| 6855 |
|
|
globals->fix_cortex_a8 = fix_cortex_a8;
|
| 6856 |
161 |
khays |
globals->fix_arm1176 = fix_arm1176;
|
| 6857 |
14 |
khays |
|
| 6858 |
|
|
BFD_ASSERT (is_arm_elf (output_bfd));
|
| 6859 |
|
|
elf_arm_tdata (output_bfd)->no_enum_size_warning = no_enum_warn;
|
| 6860 |
|
|
elf_arm_tdata (output_bfd)->no_wchar_size_warning = no_wchar_warn;
|
| 6861 |
|
|
}
|
| 6862 |
|
|
|
| 6863 |
|
|
/* Replace the target offset of a Thumb bl or b.w instruction. */
|
| 6864 |
|
|
|
| 6865 |
|
|
static void
|
| 6866 |
|
|
insert_thumb_branch (bfd *abfd, long int offset, bfd_byte *insn)
|
| 6867 |
|
|
{
|
| 6868 |
|
|
bfd_vma upper;
|
| 6869 |
|
|
bfd_vma lower;
|
| 6870 |
|
|
int reloc_sign;
|
| 6871 |
|
|
|
| 6872 |
|
|
BFD_ASSERT ((offset & 1) == 0);
|
| 6873 |
|
|
|
| 6874 |
|
|
upper = bfd_get_16 (abfd, insn);
|
| 6875 |
|
|
lower = bfd_get_16 (abfd, insn + 2);
|
| 6876 |
|
|
reloc_sign = (offset < 0) ? 1 : 0;
|
| 6877 |
|
|
upper = (upper & ~(bfd_vma) 0x7ff)
|
| 6878 |
|
|
| ((offset >> 12) & 0x3ff)
|
| 6879 |
|
|
| (reloc_sign << 10);
|
| 6880 |
|
|
lower = (lower & ~(bfd_vma) 0x2fff)
|
| 6881 |
|
|
| (((!((offset >> 23) & 1)) ^ reloc_sign) << 13)
|
| 6882 |
|
|
| (((!((offset >> 22) & 1)) ^ reloc_sign) << 11)
|
| 6883 |
|
|
| ((offset >> 1) & 0x7ff);
|
| 6884 |
|
|
bfd_put_16 (abfd, upper, insn);
|
| 6885 |
|
|
bfd_put_16 (abfd, lower, insn + 2);
|
| 6886 |
|
|
}
|
| 6887 |
|
|
|
| 6888 |
|
|
/* Thumb code calling an ARM function. */
|
| 6889 |
|
|
|
| 6890 |
|
|
static int
|
| 6891 |
|
|
elf32_thumb_to_arm_stub (struct bfd_link_info * info,
|
| 6892 |
|
|
const char * name,
|
| 6893 |
|
|
bfd * input_bfd,
|
| 6894 |
|
|
bfd * output_bfd,
|
| 6895 |
|
|
asection * input_section,
|
| 6896 |
|
|
bfd_byte * hit_data,
|
| 6897 |
|
|
asection * sym_sec,
|
| 6898 |
|
|
bfd_vma offset,
|
| 6899 |
|
|
bfd_signed_vma addend,
|
| 6900 |
|
|
bfd_vma val,
|
| 6901 |
|
|
char **error_message)
|
| 6902 |
|
|
{
|
| 6903 |
|
|
asection * s = 0;
|
| 6904 |
|
|
bfd_vma my_offset;
|
| 6905 |
|
|
long int ret_offset;
|
| 6906 |
|
|
struct elf_link_hash_entry * myh;
|
| 6907 |
|
|
struct elf32_arm_link_hash_table * globals;
|
| 6908 |
|
|
|
| 6909 |
|
|
myh = find_thumb_glue (info, name, error_message);
|
| 6910 |
|
|
if (myh == NULL)
|
| 6911 |
|
|
return FALSE;
|
| 6912 |
|
|
|
| 6913 |
|
|
globals = elf32_arm_hash_table (info);
|
| 6914 |
|
|
BFD_ASSERT (globals != NULL);
|
| 6915 |
|
|
BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
|
| 6916 |
|
|
|
| 6917 |
|
|
my_offset = myh->root.u.def.value;
|
| 6918 |
|
|
|
| 6919 |
|
|
s = bfd_get_section_by_name (globals->bfd_of_glue_owner,
|
| 6920 |
|
|
THUMB2ARM_GLUE_SECTION_NAME);
|
| 6921 |
|
|
|
| 6922 |
|
|
BFD_ASSERT (s != NULL);
|
| 6923 |
|
|
BFD_ASSERT (s->contents != NULL);
|
| 6924 |
|
|
BFD_ASSERT (s->output_section != NULL);
|
| 6925 |
|
|
|
| 6926 |
|
|
if ((my_offset & 0x01) == 0x01)
|
| 6927 |
|
|
{
|
| 6928 |
|
|
if (sym_sec != NULL
|
| 6929 |
|
|
&& sym_sec->owner != NULL
|
| 6930 |
|
|
&& !INTERWORK_FLAG (sym_sec->owner))
|
| 6931 |
|
|
{
|
| 6932 |
|
|
(*_bfd_error_handler)
|
| 6933 |
|
|
(_("%B(%s): warning: interworking not enabled.\n"
|
| 6934 |
|
|
" first occurrence: %B: thumb call to arm"),
|
| 6935 |
|
|
sym_sec->owner, input_bfd, name);
|
| 6936 |
|
|
|
| 6937 |
|
|
return FALSE;
|
| 6938 |
|
|
}
|
| 6939 |
|
|
|
| 6940 |
|
|
--my_offset;
|
| 6941 |
|
|
myh->root.u.def.value = my_offset;
|
| 6942 |
|
|
|
| 6943 |
|
|
put_thumb_insn (globals, output_bfd, (bfd_vma) t2a1_bx_pc_insn,
|
| 6944 |
|
|
s->contents + my_offset);
|
| 6945 |
|
|
|
| 6946 |
|
|
put_thumb_insn (globals, output_bfd, (bfd_vma) t2a2_noop_insn,
|
| 6947 |
|
|
s->contents + my_offset + 2);
|
| 6948 |
|
|
|
| 6949 |
|
|
ret_offset =
|
| 6950 |
|
|
/* Address of destination of the stub. */
|
| 6951 |
|
|
((bfd_signed_vma) val)
|
| 6952 |
|
|
- ((bfd_signed_vma)
|
| 6953 |
|
|
/* Offset from the start of the current section
|
| 6954 |
|
|
to the start of the stubs. */
|
| 6955 |
|
|
(s->output_offset
|
| 6956 |
|
|
/* Offset of the start of this stub from the start of the stubs. */
|
| 6957 |
|
|
+ my_offset
|
| 6958 |
|
|
/* Address of the start of the current section. */
|
| 6959 |
|
|
+ s->output_section->vma)
|
| 6960 |
|
|
/* The branch instruction is 4 bytes into the stub. */
|
| 6961 |
|
|
+ 4
|
| 6962 |
|
|
/* ARM branches work from the pc of the instruction + 8. */
|
| 6963 |
|
|
+ 8);
|
| 6964 |
|
|
|
| 6965 |
|
|
put_arm_insn (globals, output_bfd,
|
| 6966 |
|
|
(bfd_vma) t2a3_b_insn | ((ret_offset >> 2) & 0x00FFFFFF),
|
| 6967 |
|
|
s->contents + my_offset + 4);
|
| 6968 |
|
|
}
|
| 6969 |
|
|
|
| 6970 |
|
|
BFD_ASSERT (my_offset <= globals->thumb_glue_size);
|
| 6971 |
|
|
|
| 6972 |
|
|
/* Now go back and fix up the original BL insn to point to here. */
|
| 6973 |
|
|
ret_offset =
|
| 6974 |
|
|
/* Address of where the stub is located. */
|
| 6975 |
|
|
(s->output_section->vma + s->output_offset + my_offset)
|
| 6976 |
|
|
/* Address of where the BL is located. */
|
| 6977 |
|
|
- (input_section->output_section->vma + input_section->output_offset
|
| 6978 |
|
|
+ offset)
|
| 6979 |
|
|
/* Addend in the relocation. */
|
| 6980 |
|
|
- addend
|
| 6981 |
|
|
/* Biassing for PC-relative addressing. */
|
| 6982 |
|
|
- 8;
|
| 6983 |
|
|
|
| 6984 |
|
|
insert_thumb_branch (input_bfd, ret_offset, hit_data - input_section->vma);
|
| 6985 |
|
|
|
| 6986 |
|
|
return TRUE;
|
| 6987 |
|
|
}
|
| 6988 |
|
|
|
| 6989 |
|
|
/* Populate an Arm to Thumb stub. Returns the stub symbol. */
|
| 6990 |
|
|
|
| 6991 |
|
|
static struct elf_link_hash_entry *
|
| 6992 |
|
|
elf32_arm_create_thumb_stub (struct bfd_link_info * info,
|
| 6993 |
|
|
const char * name,
|
| 6994 |
|
|
bfd * input_bfd,
|
| 6995 |
|
|
bfd * output_bfd,
|
| 6996 |
|
|
asection * sym_sec,
|
| 6997 |
|
|
bfd_vma val,
|
| 6998 |
|
|
asection * s,
|
| 6999 |
|
|
char ** error_message)
|
| 7000 |
|
|
{
|
| 7001 |
|
|
bfd_vma my_offset;
|
| 7002 |
|
|
long int ret_offset;
|
| 7003 |
|
|
struct elf_link_hash_entry * myh;
|
| 7004 |
|
|
struct elf32_arm_link_hash_table * globals;
|
| 7005 |
|
|
|
| 7006 |
|
|
myh = find_arm_glue (info, name, error_message);
|
| 7007 |
|
|
if (myh == NULL)
|
| 7008 |
|
|
return NULL;
|
| 7009 |
|
|
|
| 7010 |
|
|
globals = elf32_arm_hash_table (info);
|
| 7011 |
|
|
BFD_ASSERT (globals != NULL);
|
| 7012 |
|
|
BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
|
| 7013 |
|
|
|
| 7014 |
|
|
my_offset = myh->root.u.def.value;
|
| 7015 |
|
|
|
| 7016 |
|
|
if ((my_offset & 0x01) == 0x01)
|
| 7017 |
|
|
{
|
| 7018 |
|
|
if (sym_sec != NULL
|
| 7019 |
|
|
&& sym_sec->owner != NULL
|
| 7020 |
|
|
&& !INTERWORK_FLAG (sym_sec->owner))
|
| 7021 |
|
|
{
|
| 7022 |
|
|
(*_bfd_error_handler)
|
| 7023 |
|
|
(_("%B(%s): warning: interworking not enabled.\n"
|
| 7024 |
|
|
" first occurrence: %B: arm call to thumb"),
|
| 7025 |
|
|
sym_sec->owner, input_bfd, name);
|
| 7026 |
|
|
}
|
| 7027 |
|
|
|
| 7028 |
|
|
--my_offset;
|
| 7029 |
|
|
myh->root.u.def.value = my_offset;
|
| 7030 |
|
|
|
| 7031 |
|
|
if (info->shared || globals->root.is_relocatable_executable
|
| 7032 |
|
|
|| globals->pic_veneer)
|
| 7033 |
|
|
{
|
| 7034 |
|
|
/* For relocatable objects we can't use absolute addresses,
|
| 7035 |
|
|
so construct the address from a relative offset. */
|
| 7036 |
|
|
/* TODO: If the offset is small it's probably worth
|
| 7037 |
|
|
constructing the address with adds. */
|
| 7038 |
|
|
put_arm_insn (globals, output_bfd, (bfd_vma) a2t1p_ldr_insn,
|
| 7039 |
|
|
s->contents + my_offset);
|
| 7040 |
|
|
put_arm_insn (globals, output_bfd, (bfd_vma) a2t2p_add_pc_insn,
|
| 7041 |
|
|
s->contents + my_offset + 4);
|
| 7042 |
|
|
put_arm_insn (globals, output_bfd, (bfd_vma) a2t3p_bx_r12_insn,
|
| 7043 |
|
|
s->contents + my_offset + 8);
|
| 7044 |
|
|
/* Adjust the offset by 4 for the position of the add,
|
| 7045 |
|
|
and 8 for the pipeline offset. */
|
| 7046 |
|
|
ret_offset = (val - (s->output_offset
|
| 7047 |
|
|
+ s->output_section->vma
|
| 7048 |
|
|
+ my_offset + 12))
|
| 7049 |
|
|
| 1;
|
| 7050 |
|
|
bfd_put_32 (output_bfd, ret_offset,
|
| 7051 |
|
|
s->contents + my_offset + 12);
|
| 7052 |
|
|
}
|
| 7053 |
|
|
else if (globals->use_blx)
|
| 7054 |
|
|
{
|
| 7055 |
|
|
put_arm_insn (globals, output_bfd, (bfd_vma) a2t1v5_ldr_insn,
|
| 7056 |
|
|
s->contents + my_offset);
|
| 7057 |
|
|
|
| 7058 |
|
|
/* It's a thumb address. Add the low order bit. */
|
| 7059 |
|
|
bfd_put_32 (output_bfd, val | a2t2v5_func_addr_insn,
|
| 7060 |
|
|
s->contents + my_offset + 4);
|
| 7061 |
|
|
}
|
| 7062 |
|
|
else
|
| 7063 |
|
|
{
|
| 7064 |
|
|
put_arm_insn (globals, output_bfd, (bfd_vma) a2t1_ldr_insn,
|
| 7065 |
|
|
s->contents + my_offset);
|
| 7066 |
|
|
|
| 7067 |
|
|
put_arm_insn (globals, output_bfd, (bfd_vma) a2t2_bx_r12_insn,
|
| 7068 |
|
|
s->contents + my_offset + 4);
|
| 7069 |
|
|
|
| 7070 |
|
|
/* It's a thumb address. Add the low order bit. */
|
| 7071 |
|
|
bfd_put_32 (output_bfd, val | a2t3_func_addr_insn,
|
| 7072 |
|
|
s->contents + my_offset + 8);
|
| 7073 |
|
|
|
| 7074 |
|
|
my_offset += 12;
|
| 7075 |
|
|
}
|
| 7076 |
|
|
}
|
| 7077 |
|
|
|
| 7078 |
|
|
BFD_ASSERT (my_offset <= globals->arm_glue_size);
|
| 7079 |
|
|
|
| 7080 |
|
|
return myh;
|
| 7081 |
|
|
}
|
| 7082 |
|
|
|
| 7083 |
|
|
/* Arm code calling a Thumb function. */
|
| 7084 |
|
|
|
| 7085 |
|
|
static int
|
| 7086 |
|
|
elf32_arm_to_thumb_stub (struct bfd_link_info * info,
|
| 7087 |
|
|
const char * name,
|
| 7088 |
|
|
bfd * input_bfd,
|
| 7089 |
|
|
bfd * output_bfd,
|
| 7090 |
|
|
asection * input_section,
|
| 7091 |
|
|
bfd_byte * hit_data,
|
| 7092 |
|
|
asection * sym_sec,
|
| 7093 |
|
|
bfd_vma offset,
|
| 7094 |
|
|
bfd_signed_vma addend,
|
| 7095 |
|
|
bfd_vma val,
|
| 7096 |
|
|
char **error_message)
|
| 7097 |
|
|
{
|
| 7098 |
|
|
unsigned long int tmp;
|
| 7099 |
|
|
bfd_vma my_offset;
|
| 7100 |
|
|
asection * s;
|
| 7101 |
|
|
long int ret_offset;
|
| 7102 |
|
|
struct elf_link_hash_entry * myh;
|
| 7103 |
|
|
struct elf32_arm_link_hash_table * globals;
|
| 7104 |
|
|
|
| 7105 |
|
|
globals = elf32_arm_hash_table (info);
|
| 7106 |
|
|
BFD_ASSERT (globals != NULL);
|
| 7107 |
|
|
BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
|
| 7108 |
|
|
|
| 7109 |
|
|
s = bfd_get_section_by_name (globals->bfd_of_glue_owner,
|
| 7110 |
|
|
ARM2THUMB_GLUE_SECTION_NAME);
|
| 7111 |
|
|
BFD_ASSERT (s != NULL);
|
| 7112 |
|
|
BFD_ASSERT (s->contents != NULL);
|
| 7113 |
|
|
BFD_ASSERT (s->output_section != NULL);
|
| 7114 |
|
|
|
| 7115 |
|
|
myh = elf32_arm_create_thumb_stub (info, name, input_bfd, output_bfd,
|
| 7116 |
|
|
sym_sec, val, s, error_message);
|
| 7117 |
|
|
if (!myh)
|
| 7118 |
|
|
return FALSE;
|
| 7119 |
|
|
|
| 7120 |
|
|
my_offset = myh->root.u.def.value;
|
| 7121 |
|
|
tmp = bfd_get_32 (input_bfd, hit_data);
|
| 7122 |
|
|
tmp = tmp & 0xFF000000;
|
| 7123 |
|
|
|
| 7124 |
|
|
/* Somehow these are both 4 too far, so subtract 8. */
|
| 7125 |
|
|
ret_offset = (s->output_offset
|
| 7126 |
|
|
+ my_offset
|
| 7127 |
|
|
+ s->output_section->vma
|
| 7128 |
|
|
- (input_section->output_offset
|
| 7129 |
|
|
+ input_section->output_section->vma
|
| 7130 |
|
|
+ offset + addend)
|
| 7131 |
|
|
- 8);
|
| 7132 |
|
|
|
| 7133 |
|
|
tmp = tmp | ((ret_offset >> 2) & 0x00FFFFFF);
|
| 7134 |
|
|
|
| 7135 |
|
|
bfd_put_32 (output_bfd, (bfd_vma) tmp, hit_data - input_section->vma);
|
| 7136 |
|
|
|
| 7137 |
|
|
return TRUE;
|
| 7138 |
|
|
}
|
| 7139 |
|
|
|
| 7140 |
|
|
/* Populate Arm stub for an exported Thumb function. */
|
| 7141 |
|
|
|
| 7142 |
|
|
static bfd_boolean
|
| 7143 |
|
|
elf32_arm_to_thumb_export_stub (struct elf_link_hash_entry *h, void * inf)
|
| 7144 |
|
|
{
|
| 7145 |
|
|
struct bfd_link_info * info = (struct bfd_link_info *) inf;
|
| 7146 |
|
|
asection * s;
|
| 7147 |
|
|
struct elf_link_hash_entry * myh;
|
| 7148 |
|
|
struct elf32_arm_link_hash_entry *eh;
|
| 7149 |
|
|
struct elf32_arm_link_hash_table * globals;
|
| 7150 |
|
|
asection *sec;
|
| 7151 |
|
|
bfd_vma val;
|
| 7152 |
|
|
char *error_message;
|
| 7153 |
|
|
|
| 7154 |
|
|
eh = elf32_arm_hash_entry (h);
|
| 7155 |
|
|
/* Allocate stubs for exported Thumb functions on v4t. */
|
| 7156 |
|
|
if (eh->export_glue == NULL)
|
| 7157 |
|
|
return TRUE;
|
| 7158 |
|
|
|
| 7159 |
|
|
globals = elf32_arm_hash_table (info);
|
| 7160 |
|
|
BFD_ASSERT (globals != NULL);
|
| 7161 |
|
|
BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
|
| 7162 |
|
|
|
| 7163 |
|
|
s = bfd_get_section_by_name (globals->bfd_of_glue_owner,
|
| 7164 |
|
|
ARM2THUMB_GLUE_SECTION_NAME);
|
| 7165 |
|
|
BFD_ASSERT (s != NULL);
|
| 7166 |
|
|
BFD_ASSERT (s->contents != NULL);
|
| 7167 |
|
|
BFD_ASSERT (s->output_section != NULL);
|
| 7168 |
|
|
|
| 7169 |
|
|
sec = eh->export_glue->root.u.def.section;
|
| 7170 |
|
|
|
| 7171 |
|
|
BFD_ASSERT (sec->output_section != NULL);
|
| 7172 |
|
|
|
| 7173 |
|
|
val = eh->export_glue->root.u.def.value + sec->output_offset
|
| 7174 |
|
|
+ sec->output_section->vma;
|
| 7175 |
|
|
|
| 7176 |
|
|
myh = elf32_arm_create_thumb_stub (info, h->root.root.string,
|
| 7177 |
|
|
h->root.u.def.section->owner,
|
| 7178 |
|
|
globals->obfd, sec, val, s,
|
| 7179 |
|
|
&error_message);
|
| 7180 |
|
|
BFD_ASSERT (myh);
|
| 7181 |
|
|
return TRUE;
|
| 7182 |
|
|
}
|
| 7183 |
|
|
|
| 7184 |
|
|
/* Populate ARMv4 BX veneers. Returns the absolute adress of the veneer. */
|
| 7185 |
|
|
|
| 7186 |
|
|
static bfd_vma
|
| 7187 |
|
|
elf32_arm_bx_glue (struct bfd_link_info * info, int reg)
|
| 7188 |
|
|
{
|
| 7189 |
|
|
bfd_byte *p;
|
| 7190 |
|
|
bfd_vma glue_addr;
|
| 7191 |
|
|
asection *s;
|
| 7192 |
|
|
struct elf32_arm_link_hash_table *globals;
|
| 7193 |
|
|
|
| 7194 |
|
|
globals = elf32_arm_hash_table (info);
|
| 7195 |
|
|
BFD_ASSERT (globals != NULL);
|
| 7196 |
|
|
BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
|
| 7197 |
|
|
|
| 7198 |
|
|
s = bfd_get_section_by_name (globals->bfd_of_glue_owner,
|
| 7199 |
|
|
ARM_BX_GLUE_SECTION_NAME);
|
| 7200 |
|
|
BFD_ASSERT (s != NULL);
|
| 7201 |
|
|
BFD_ASSERT (s->contents != NULL);
|
| 7202 |
|
|
BFD_ASSERT (s->output_section != NULL);
|
| 7203 |
|
|
|
| 7204 |
|
|
BFD_ASSERT (globals->bx_glue_offset[reg] & 2);
|
| 7205 |
|
|
|
| 7206 |
|
|
glue_addr = globals->bx_glue_offset[reg] & ~(bfd_vma)3;
|
| 7207 |
|
|
|
| 7208 |
|
|
if ((globals->bx_glue_offset[reg] & 1) == 0)
|
| 7209 |
|
|
{
|
| 7210 |
|
|
p = s->contents + glue_addr;
|
| 7211 |
|
|
bfd_put_32 (globals->obfd, armbx1_tst_insn + (reg << 16), p);
|
| 7212 |
|
|
bfd_put_32 (globals->obfd, armbx2_moveq_insn + reg, p + 4);
|
| 7213 |
|
|
bfd_put_32 (globals->obfd, armbx3_bx_insn + reg, p + 8);
|
| 7214 |
|
|
globals->bx_glue_offset[reg] |= 1;
|
| 7215 |
|
|
}
|
| 7216 |
|
|
|
| 7217 |
|
|
return glue_addr + s->output_section->vma + s->output_offset;
|
| 7218 |
|
|
}
|
| 7219 |
|
|
|
| 7220 |
|
|
/* Generate Arm stubs for exported Thumb symbols. */
|
| 7221 |
|
|
static void
|
| 7222 |
|
|
elf32_arm_begin_write_processing (bfd *abfd ATTRIBUTE_UNUSED,
|
| 7223 |
|
|
struct bfd_link_info *link_info)
|
| 7224 |
|
|
{
|
| 7225 |
|
|
struct elf32_arm_link_hash_table * globals;
|
| 7226 |
|
|
|
| 7227 |
|
|
if (link_info == NULL)
|
| 7228 |
|
|
/* Ignore this if we are not called by the ELF backend linker. */
|
| 7229 |
|
|
return;
|
| 7230 |
|
|
|
| 7231 |
|
|
globals = elf32_arm_hash_table (link_info);
|
| 7232 |
|
|
if (globals == NULL)
|
| 7233 |
|
|
return;
|
| 7234 |
|
|
|
| 7235 |
|
|
/* If blx is available then exported Thumb symbols are OK and there is
|
| 7236 |
|
|
nothing to do. */
|
| 7237 |
|
|
if (globals->use_blx)
|
| 7238 |
|
|
return;
|
| 7239 |
|
|
|
| 7240 |
|
|
elf_link_hash_traverse (&globals->root, elf32_arm_to_thumb_export_stub,
|
| 7241 |
|
|
link_info);
|
| 7242 |
|
|
}
|
| 7243 |
|
|
|
| 7244 |
|
|
/* Reserve space for COUNT dynamic relocations in relocation selection
|
| 7245 |
|
|
SRELOC. */
|
| 7246 |
|
|
|
| 7247 |
|
|
static void
|
| 7248 |
|
|
elf32_arm_allocate_dynrelocs (struct bfd_link_info *info, asection *sreloc,
|
| 7249 |
|
|
bfd_size_type count)
|
| 7250 |
|
|
{
|
| 7251 |
|
|
struct elf32_arm_link_hash_table *htab;
|
| 7252 |
|
|
|
| 7253 |
|
|
htab = elf32_arm_hash_table (info);
|
| 7254 |
|
|
BFD_ASSERT (htab->root.dynamic_sections_created);
|
| 7255 |
|
|
if (sreloc == NULL)
|
| 7256 |
|
|
abort ();
|
| 7257 |
|
|
sreloc->size += RELOC_SIZE (htab) * count;
|
| 7258 |
|
|
}
|
| 7259 |
|
|
|
| 7260 |
|
|
/* Reserve space for COUNT R_ARM_IRELATIVE relocations. If the link is
|
| 7261 |
|
|
dynamic, the relocations should go in SRELOC, otherwise they should
|
| 7262 |
|
|
go in the special .rel.iplt section. */
|
| 7263 |
|
|
|
| 7264 |
|
|
static void
|
| 7265 |
|
|
elf32_arm_allocate_irelocs (struct bfd_link_info *info, asection *sreloc,
|
| 7266 |
|
|
bfd_size_type count)
|
| 7267 |
|
|
{
|
| 7268 |
|
|
struct elf32_arm_link_hash_table *htab;
|
| 7269 |
|
|
|
| 7270 |
|
|
htab = elf32_arm_hash_table (info);
|
| 7271 |
|
|
if (!htab->root.dynamic_sections_created)
|
| 7272 |
|
|
htab->root.irelplt->size += RELOC_SIZE (htab) * count;
|
| 7273 |
|
|
else
|
| 7274 |
|
|
{
|
| 7275 |
|
|
BFD_ASSERT (sreloc != NULL);
|
| 7276 |
|
|
sreloc->size += RELOC_SIZE (htab) * count;
|
| 7277 |
|
|
}
|
| 7278 |
|
|
}
|
| 7279 |
|
|
|
| 7280 |
|
|
/* Add relocation REL to the end of relocation section SRELOC. */
|
| 7281 |
|
|
|
| 7282 |
|
|
static void
|
| 7283 |
|
|
elf32_arm_add_dynreloc (bfd *output_bfd, struct bfd_link_info *info,
|
| 7284 |
|
|
asection *sreloc, Elf_Internal_Rela *rel)
|
| 7285 |
|
|
{
|
| 7286 |
|
|
bfd_byte *loc;
|
| 7287 |
|
|
struct elf32_arm_link_hash_table *htab;
|
| 7288 |
|
|
|
| 7289 |
|
|
htab = elf32_arm_hash_table (info);
|
| 7290 |
|
|
if (!htab->root.dynamic_sections_created
|
| 7291 |
|
|
&& ELF32_R_TYPE (rel->r_info) == R_ARM_IRELATIVE)
|
| 7292 |
|
|
sreloc = htab->root.irelplt;
|
| 7293 |
|
|
if (sreloc == NULL)
|
| 7294 |
|
|
abort ();
|
| 7295 |
|
|
loc = sreloc->contents;
|
| 7296 |
|
|
loc += sreloc->reloc_count++ * RELOC_SIZE (htab);
|
| 7297 |
|
|
if (sreloc->reloc_count * RELOC_SIZE (htab) > sreloc->size)
|
| 7298 |
|
|
abort ();
|
| 7299 |
|
|
SWAP_RELOC_OUT (htab) (output_bfd, rel, loc);
|
| 7300 |
|
|
}
|
| 7301 |
|
|
|
| 7302 |
|
|
/* Allocate room for a PLT entry described by ROOT_PLT and ARM_PLT.
|
| 7303 |
|
|
IS_IPLT_ENTRY says whether the entry belongs to .iplt rather than
|
| 7304 |
|
|
to .plt. */
|
| 7305 |
|
|
|
| 7306 |
|
|
static void
|
| 7307 |
|
|
elf32_arm_allocate_plt_entry (struct bfd_link_info *info,
|
| 7308 |
|
|
bfd_boolean is_iplt_entry,
|
| 7309 |
|
|
union gotplt_union *root_plt,
|
| 7310 |
|
|
struct arm_plt_info *arm_plt)
|
| 7311 |
|
|
{
|
| 7312 |
|
|
struct elf32_arm_link_hash_table *htab;
|
| 7313 |
|
|
asection *splt;
|
| 7314 |
|
|
asection *sgotplt;
|
| 7315 |
|
|
|
| 7316 |
|
|
htab = elf32_arm_hash_table (info);
|
| 7317 |
|
|
|
| 7318 |
|
|
if (is_iplt_entry)
|
| 7319 |
|
|
{
|
| 7320 |
|
|
splt = htab->root.iplt;
|
| 7321 |
|
|
sgotplt = htab->root.igotplt;
|
| 7322 |
|
|
|
| 7323 |
|
|
/* Allocate room for an R_ARM_IRELATIVE relocation in .rel.iplt. */
|
| 7324 |
|
|
elf32_arm_allocate_irelocs (info, htab->root.irelplt, 1);
|
| 7325 |
|
|
}
|
| 7326 |
|
|
else
|
| 7327 |
|
|
{
|
| 7328 |
|
|
splt = htab->root.splt;
|
| 7329 |
|
|
sgotplt = htab->root.sgotplt;
|
| 7330 |
|
|
|
| 7331 |
|
|
/* Allocate room for an R_JUMP_SLOT relocation in .rel.plt. */
|
| 7332 |
|
|
elf32_arm_allocate_dynrelocs (info, htab->root.srelplt, 1);
|
| 7333 |
|
|
|
| 7334 |
|
|
/* If this is the first .plt entry, make room for the special
|
| 7335 |
|
|
first entry. */
|
| 7336 |
|
|
if (splt->size == 0)
|
| 7337 |
|
|
splt->size += htab->plt_header_size;
|
| 7338 |
|
|
}
|
| 7339 |
|
|
|
| 7340 |
|
|
/* Allocate the PLT entry itself, including any leading Thumb stub. */
|
| 7341 |
|
|
if (elf32_arm_plt_needs_thumb_stub_p (info, arm_plt))
|
| 7342 |
|
|
splt->size += PLT_THUMB_STUB_SIZE;
|
| 7343 |
|
|
root_plt->offset = splt->size;
|
| 7344 |
|
|
splt->size += htab->plt_entry_size;
|
| 7345 |
|
|
|
| 7346 |
|
|
if (!htab->symbian_p)
|
| 7347 |
|
|
{
|
| 7348 |
|
|
/* We also need to make an entry in the .got.plt section, which
|
| 7349 |
|
|
will be placed in the .got section by the linker script. */
|
| 7350 |
|
|
arm_plt->got_offset = sgotplt->size - 8 * htab->num_tls_desc;
|
| 7351 |
|
|
sgotplt->size += 4;
|
| 7352 |
|
|
}
|
| 7353 |
|
|
}
|
| 7354 |
|
|
|
| 7355 |
|
|
/* Fill in a PLT entry and its associated GOT slot. If DYNINDX == -1,
|
| 7356 |
|
|
the entry lives in .iplt and resolves to (*SYM_VALUE)().
|
| 7357 |
|
|
Otherwise, DYNINDX is the index of the symbol in the dynamic
|
| 7358 |
|
|
symbol table and SYM_VALUE is undefined.
|
| 7359 |
|
|
|
| 7360 |
|
|
ROOT_PLT points to the offset of the PLT entry from the start of its
|
| 7361 |
|
|
section (.iplt or .plt). ARM_PLT points to the symbol's ARM-specific
|
| 7362 |
|
|
bookkeeping information. */
|
| 7363 |
|
|
|
| 7364 |
|
|
static void
|
| 7365 |
|
|
elf32_arm_populate_plt_entry (bfd *output_bfd, struct bfd_link_info *info,
|
| 7366 |
|
|
union gotplt_union *root_plt,
|
| 7367 |
|
|
struct arm_plt_info *arm_plt,
|
| 7368 |
|
|
int dynindx, bfd_vma sym_value)
|
| 7369 |
|
|
{
|
| 7370 |
|
|
struct elf32_arm_link_hash_table *htab;
|
| 7371 |
|
|
asection *sgot;
|
| 7372 |
|
|
asection *splt;
|
| 7373 |
|
|
asection *srel;
|
| 7374 |
|
|
bfd_byte *loc;
|
| 7375 |
|
|
bfd_vma plt_index;
|
| 7376 |
|
|
Elf_Internal_Rela rel;
|
| 7377 |
|
|
bfd_vma plt_header_size;
|
| 7378 |
|
|
bfd_vma got_header_size;
|
| 7379 |
|
|
|
| 7380 |
|
|
htab = elf32_arm_hash_table (info);
|
| 7381 |
|
|
|
| 7382 |
|
|
/* Pick the appropriate sections and sizes. */
|
| 7383 |
|
|
if (dynindx == -1)
|
| 7384 |
|
|
{
|
| 7385 |
|
|
splt = htab->root.iplt;
|
| 7386 |
|
|
sgot = htab->root.igotplt;
|
| 7387 |
|
|
srel = htab->root.irelplt;
|
| 7388 |
|
|
|
| 7389 |
|
|
/* There are no reserved entries in .igot.plt, and no special
|
| 7390 |
|
|
first entry in .iplt. */
|
| 7391 |
|
|
got_header_size = 0;
|
| 7392 |
|
|
plt_header_size = 0;
|
| 7393 |
|
|
}
|
| 7394 |
|
|
else
|
| 7395 |
|
|
{
|
| 7396 |
|
|
splt = htab->root.splt;
|
| 7397 |
|
|
sgot = htab->root.sgotplt;
|
| 7398 |
|
|
srel = htab->root.srelplt;
|
| 7399 |
|
|
|
| 7400 |
|
|
got_header_size = get_elf_backend_data (output_bfd)->got_header_size;
|
| 7401 |
|
|
plt_header_size = htab->plt_header_size;
|
| 7402 |
|
|
}
|
| 7403 |
|
|
BFD_ASSERT (splt != NULL && srel != NULL);
|
| 7404 |
|
|
|
| 7405 |
|
|
/* Fill in the entry in the procedure linkage table. */
|
| 7406 |
|
|
if (htab->symbian_p)
|
| 7407 |
|
|
{
|
| 7408 |
|
|
BFD_ASSERT (dynindx >= 0);
|
| 7409 |
|
|
put_arm_insn (htab, output_bfd,
|
| 7410 |
|
|
elf32_arm_symbian_plt_entry[0],
|
| 7411 |
|
|
splt->contents + root_plt->offset);
|
| 7412 |
|
|
bfd_put_32 (output_bfd,
|
| 7413 |
|
|
elf32_arm_symbian_plt_entry[1],
|
| 7414 |
|
|
splt->contents + root_plt->offset + 4);
|
| 7415 |
|
|
|
| 7416 |
|
|
/* Fill in the entry in the .rel.plt section. */
|
| 7417 |
|
|
rel.r_offset = (splt->output_section->vma
|
| 7418 |
|
|
+ splt->output_offset
|
| 7419 |
|
|
+ root_plt->offset + 4);
|
| 7420 |
|
|
rel.r_info = ELF32_R_INFO (dynindx, R_ARM_GLOB_DAT);
|
| 7421 |
|
|
|
| 7422 |
|
|
/* Get the index in the procedure linkage table which
|
| 7423 |
|
|
corresponds to this symbol. This is the index of this symbol
|
| 7424 |
|
|
in all the symbols for which we are making plt entries. The
|
| 7425 |
|
|
first entry in the procedure linkage table is reserved. */
|
| 7426 |
|
|
plt_index = ((root_plt->offset - plt_header_size)
|
| 7427 |
|
|
/ htab->plt_entry_size);
|
| 7428 |
|
|
}
|
| 7429 |
|
|
else
|
| 7430 |
|
|
{
|
| 7431 |
|
|
bfd_vma got_offset, got_address, plt_address;
|
| 7432 |
|
|
bfd_vma got_displacement, initial_got_entry;
|
| 7433 |
|
|
bfd_byte * ptr;
|
| 7434 |
|
|
|
| 7435 |
|
|
BFD_ASSERT (sgot != NULL);
|
| 7436 |
|
|
|
| 7437 |
|
|
/* Get the offset into the .(i)got.plt table of the entry that
|
| 7438 |
|
|
corresponds to this function. */
|
| 7439 |
|
|
got_offset = (arm_plt->got_offset & -2);
|
| 7440 |
|
|
|
| 7441 |
|
|
/* Get the index in the procedure linkage table which
|
| 7442 |
|
|
corresponds to this symbol. This is the index of this symbol
|
| 7443 |
|
|
in all the symbols for which we are making plt entries.
|
| 7444 |
|
|
After the reserved .got.plt entries, all symbols appear in
|
| 7445 |
|
|
the same order as in .plt. */
|
| 7446 |
|
|
plt_index = (got_offset - got_header_size) / 4;
|
| 7447 |
|
|
|
| 7448 |
|
|
/* Calculate the address of the GOT entry. */
|
| 7449 |
|
|
got_address = (sgot->output_section->vma
|
| 7450 |
|
|
+ sgot->output_offset
|
| 7451 |
|
|
+ got_offset);
|
| 7452 |
|
|
|
| 7453 |
|
|
/* ...and the address of the PLT entry. */
|
| 7454 |
|
|
plt_address = (splt->output_section->vma
|
| 7455 |
|
|
+ splt->output_offset
|
| 7456 |
|
|
+ root_plt->offset);
|
| 7457 |
|
|
|
| 7458 |
|
|
ptr = splt->contents + root_plt->offset;
|
| 7459 |
|
|
if (htab->vxworks_p && info->shared)
|
| 7460 |
|
|
{
|
| 7461 |
|
|
unsigned int i;
|
| 7462 |
|
|
bfd_vma val;
|
| 7463 |
|
|
|
| 7464 |
|
|
for (i = 0; i != htab->plt_entry_size / 4; i++, ptr += 4)
|
| 7465 |
|
|
{
|
| 7466 |
|
|
val = elf32_arm_vxworks_shared_plt_entry[i];
|
| 7467 |
|
|
if (i == 2)
|
| 7468 |
|
|
val |= got_address - sgot->output_section->vma;
|
| 7469 |
|
|
if (i == 5)
|
| 7470 |
|
|
val |= plt_index * RELOC_SIZE (htab);
|
| 7471 |
|
|
if (i == 2 || i == 5)
|
| 7472 |
|
|
bfd_put_32 (output_bfd, val, ptr);
|
| 7473 |
|
|
else
|
| 7474 |
|
|
put_arm_insn (htab, output_bfd, val, ptr);
|
| 7475 |
|
|
}
|
| 7476 |
|
|
}
|
| 7477 |
|
|
else if (htab->vxworks_p)
|
| 7478 |
|
|
{
|
| 7479 |
|
|
unsigned int i;
|
| 7480 |
|
|
bfd_vma val;
|
| 7481 |
|
|
|
| 7482 |
|
|
for (i = 0; i != htab->plt_entry_size / 4; i++, ptr += 4)
|
| 7483 |
|
|
{
|
| 7484 |
|
|
val = elf32_arm_vxworks_exec_plt_entry[i];
|
| 7485 |
|
|
if (i == 2)
|
| 7486 |
|
|
val |= got_address;
|
| 7487 |
|
|
if (i == 4)
|
| 7488 |
|
|
val |= 0xffffff & -((root_plt->offset + i * 4 + 8) >> 2);
|
| 7489 |
|
|
if (i == 5)
|
| 7490 |
|
|
val |= plt_index * RELOC_SIZE (htab);
|
| 7491 |
|
|
if (i == 2 || i == 5)
|
| 7492 |
|
|
bfd_put_32 (output_bfd, val, ptr);
|
| 7493 |
|
|
else
|
| 7494 |
|
|
put_arm_insn (htab, output_bfd, val, ptr);
|
| 7495 |
|
|
}
|
| 7496 |
|
|
|
| 7497 |
|
|
loc = (htab->srelplt2->contents
|
| 7498 |
|
|
+ (plt_index * 2 + 1) * RELOC_SIZE (htab));
|
| 7499 |
|
|
|
| 7500 |
|
|
/* Create the .rela.plt.unloaded R_ARM_ABS32 relocation
|
| 7501 |
|
|
referencing the GOT for this PLT entry. */
|
| 7502 |
|
|
rel.r_offset = plt_address + 8;
|
| 7503 |
|
|
rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_ARM_ABS32);
|
| 7504 |
|
|
rel.r_addend = got_offset;
|
| 7505 |
|
|
SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc);
|
| 7506 |
|
|
loc += RELOC_SIZE (htab);
|
| 7507 |
|
|
|
| 7508 |
|
|
/* Create the R_ARM_ABS32 relocation referencing the
|
| 7509 |
|
|
beginning of the PLT for this GOT entry. */
|
| 7510 |
|
|
rel.r_offset = got_address;
|
| 7511 |
|
|
rel.r_info = ELF32_R_INFO (htab->root.hplt->indx, R_ARM_ABS32);
|
| 7512 |
|
|
rel.r_addend = 0;
|
| 7513 |
|
|
SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc);
|
| 7514 |
|
|
}
|
| 7515 |
|
|
else
|
| 7516 |
|
|
{
|
| 7517 |
|
|
/* Calculate the displacement between the PLT slot and the
|
| 7518 |
|
|
entry in the GOT. The eight-byte offset accounts for the
|
| 7519 |
|
|
value produced by adding to pc in the first instruction
|
| 7520 |
|
|
of the PLT stub. */
|
| 7521 |
|
|
got_displacement = got_address - (plt_address + 8);
|
| 7522 |
|
|
|
| 7523 |
|
|
BFD_ASSERT ((got_displacement & 0xf0000000) == 0);
|
| 7524 |
|
|
|
| 7525 |
|
|
if (elf32_arm_plt_needs_thumb_stub_p (info, arm_plt))
|
| 7526 |
|
|
{
|
| 7527 |
|
|
put_thumb_insn (htab, output_bfd,
|
| 7528 |
|
|
elf32_arm_plt_thumb_stub[0], ptr - 4);
|
| 7529 |
|
|
put_thumb_insn (htab, output_bfd,
|
| 7530 |
|
|
elf32_arm_plt_thumb_stub[1], ptr - 2);
|
| 7531 |
|
|
}
|
| 7532 |
|
|
|
| 7533 |
|
|
put_arm_insn (htab, output_bfd,
|
| 7534 |
|
|
elf32_arm_plt_entry[0]
|
| 7535 |
|
|
| ((got_displacement & 0x0ff00000) >> 20),
|
| 7536 |
|
|
ptr + 0);
|
| 7537 |
|
|
put_arm_insn (htab, output_bfd,
|
| 7538 |
|
|
elf32_arm_plt_entry[1]
|
| 7539 |
|
|
| ((got_displacement & 0x000ff000) >> 12),
|
| 7540 |
|
|
ptr+ 4);
|
| 7541 |
|
|
put_arm_insn (htab, output_bfd,
|
| 7542 |
|
|
elf32_arm_plt_entry[2]
|
| 7543 |
|
|
| (got_displacement & 0x00000fff),
|
| 7544 |
|
|
ptr + 8);
|
| 7545 |
|
|
#ifdef FOUR_WORD_PLT
|
| 7546 |
|
|
bfd_put_32 (output_bfd, elf32_arm_plt_entry[3], ptr + 12);
|
| 7547 |
|
|
#endif
|
| 7548 |
|
|
}
|
| 7549 |
|
|
|
| 7550 |
|
|
/* Fill in the entry in the .rel(a).(i)plt section. */
|
| 7551 |
|
|
rel.r_offset = got_address;
|
| 7552 |
|
|
rel.r_addend = 0;
|
| 7553 |
|
|
if (dynindx == -1)
|
| 7554 |
|
|
{
|
| 7555 |
|
|
/* .igot.plt entries use IRELATIVE relocations against SYM_VALUE.
|
| 7556 |
|
|
The dynamic linker or static executable then calls SYM_VALUE
|
| 7557 |
|
|
to determine the correct run-time value of the .igot.plt entry. */
|
| 7558 |
|
|
rel.r_info = ELF32_R_INFO (0, R_ARM_IRELATIVE);
|
| 7559 |
|
|
initial_got_entry = sym_value;
|
| 7560 |
|
|
}
|
| 7561 |
|
|
else
|
| 7562 |
|
|
{
|
| 7563 |
|
|
rel.r_info = ELF32_R_INFO (dynindx, R_ARM_JUMP_SLOT);
|
| 7564 |
|
|
initial_got_entry = (splt->output_section->vma
|
| 7565 |
|
|
+ splt->output_offset);
|
| 7566 |
|
|
}
|
| 7567 |
|
|
|
| 7568 |
|
|
/* Fill in the entry in the global offset table. */
|
| 7569 |
|
|
bfd_put_32 (output_bfd, initial_got_entry,
|
| 7570 |
|
|
sgot->contents + got_offset);
|
| 7571 |
|
|
}
|
| 7572 |
|
|
|
| 7573 |
|
|
loc = srel->contents + plt_index * RELOC_SIZE (htab);
|
| 7574 |
|
|
SWAP_RELOC_OUT (htab) (output_bfd, &rel, loc);
|
| 7575 |
|
|
}
|
| 7576 |
|
|
|
| 7577 |
|
|
/* Some relocations map to different relocations depending on the
|
| 7578 |
|
|
target. Return the real relocation. */
|
| 7579 |
|
|
|
| 7580 |
|
|
static int
|
| 7581 |
|
|
arm_real_reloc_type (struct elf32_arm_link_hash_table * globals,
|
| 7582 |
|
|
int r_type)
|
| 7583 |
|
|
{
|
| 7584 |
|
|
switch (r_type)
|
| 7585 |
|
|
{
|
| 7586 |
|
|
case R_ARM_TARGET1:
|
| 7587 |
|
|
if (globals->target1_is_rel)
|
| 7588 |
|
|
return R_ARM_REL32;
|
| 7589 |
|
|
else
|
| 7590 |
|
|
return R_ARM_ABS32;
|
| 7591 |
|
|
|
| 7592 |
|
|
case R_ARM_TARGET2:
|
| 7593 |
|
|
return globals->target2_reloc;
|
| 7594 |
|
|
|
| 7595 |
|
|
default:
|
| 7596 |
|
|
return r_type;
|
| 7597 |
|
|
}
|
| 7598 |
|
|
}
|
| 7599 |
|
|
|
| 7600 |
|
|
/* Return the base VMA address which should be subtracted from real addresses
|
| 7601 |
|
|
when resolving @dtpoff relocation.
|
| 7602 |
|
|
This is PT_TLS segment p_vaddr. */
|
| 7603 |
|
|
|
| 7604 |
|
|
static bfd_vma
|
| 7605 |
|
|
dtpoff_base (struct bfd_link_info *info)
|
| 7606 |
|
|
{
|
| 7607 |
|
|
/* If tls_sec is NULL, we should have signalled an error already. */
|
| 7608 |
|
|
if (elf_hash_table (info)->tls_sec == NULL)
|
| 7609 |
|
|
return 0;
|
| 7610 |
|
|
return elf_hash_table (info)->tls_sec->vma;
|
| 7611 |
|
|
}
|
| 7612 |
|
|
|
| 7613 |
|
|
/* Return the relocation value for @tpoff relocation
|
| 7614 |
|
|
if STT_TLS virtual address is ADDRESS. */
|
| 7615 |
|
|
|
| 7616 |
|
|
static bfd_vma
|
| 7617 |
|
|
tpoff (struct bfd_link_info *info, bfd_vma address)
|
| 7618 |
|
|
{
|
| 7619 |
|
|
struct elf_link_hash_table *htab = elf_hash_table (info);
|
| 7620 |
|
|
bfd_vma base;
|
| 7621 |
|
|
|
| 7622 |
|
|
/* If tls_sec is NULL, we should have signalled an error already. */
|
| 7623 |
|
|
if (htab->tls_sec == NULL)
|
| 7624 |
|
|
return 0;
|
| 7625 |
|
|
base = align_power ((bfd_vma) TCB_SIZE, htab->tls_sec->alignment_power);
|
| 7626 |
|
|
return address - htab->tls_sec->vma + base;
|
| 7627 |
|
|
}
|
| 7628 |
|
|
|
| 7629 |
|
|
/* Perform an R_ARM_ABS12 relocation on the field pointed to by DATA.
|
| 7630 |
|
|
VALUE is the relocation value. */
|
| 7631 |
|
|
|
| 7632 |
|
|
static bfd_reloc_status_type
|
| 7633 |
|
|
elf32_arm_abs12_reloc (bfd *abfd, void *data, bfd_vma value)
|
| 7634 |
|
|
{
|
| 7635 |
|
|
if (value > 0xfff)
|
| 7636 |
|
|
return bfd_reloc_overflow;
|
| 7637 |
|
|
|
| 7638 |
|
|
value |= bfd_get_32 (abfd, data) & 0xfffff000;
|
| 7639 |
|
|
bfd_put_32 (abfd, value, data);
|
| 7640 |
|
|
return bfd_reloc_ok;
|
| 7641 |
|
|
}
|
| 7642 |
|
|
|
| 7643 |
|
|
/* Handle TLS relaxations. Relaxing is possible for symbols that use
|
| 7644 |
|
|
R_ARM_GOTDESC, R_ARM_{,THM_}TLS_CALL or
|
| 7645 |
|
|
R_ARM_{,THM_}TLS_DESCSEQ relocations, during a static link.
|
| 7646 |
|
|
|
| 7647 |
|
|
Return bfd_reloc_ok if we're done, bfd_reloc_continue if the caller
|
| 7648 |
|
|
is to then call final_link_relocate. Return other values in the
|
| 7649 |
|
|
case of error.
|
| 7650 |
|
|
|
| 7651 |
|
|
FIXME:When --emit-relocs is in effect, we'll emit relocs describing
|
| 7652 |
|
|
the pre-relaxed code. It would be nice if the relocs were updated
|
| 7653 |
|
|
to match the optimization. */
|
| 7654 |
|
|
|
| 7655 |
|
|
static bfd_reloc_status_type
|
| 7656 |
|
|
elf32_arm_tls_relax (struct elf32_arm_link_hash_table *globals,
|
| 7657 |
|
|
bfd *input_bfd, asection *input_sec, bfd_byte *contents,
|
| 7658 |
|
|
Elf_Internal_Rela *rel, unsigned long is_local)
|
| 7659 |
|
|
{
|
| 7660 |
|
|
unsigned long insn;
|
| 7661 |
|
|
|
| 7662 |
|
|
switch (ELF32_R_TYPE (rel->r_info))
|
| 7663 |
|
|
{
|
| 7664 |
|
|
default:
|
| 7665 |
|
|
return bfd_reloc_notsupported;
|
| 7666 |
|
|
|
| 7667 |
|
|
case R_ARM_TLS_GOTDESC:
|
| 7668 |
|
|
if (is_local)
|
| 7669 |
|
|
insn = 0;
|
| 7670 |
|
|
else
|
| 7671 |
|
|
{
|
| 7672 |
|
|
insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
|
| 7673 |
|
|
if (insn & 1)
|
| 7674 |
|
|
insn -= 5; /* THUMB */
|
| 7675 |
|
|
else
|
| 7676 |
|
|
insn -= 8; /* ARM */
|
| 7677 |
|
|
}
|
| 7678 |
|
|
bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
|
| 7679 |
|
|
return bfd_reloc_continue;
|
| 7680 |
|
|
|
| 7681 |
|
|
case R_ARM_THM_TLS_DESCSEQ:
|
| 7682 |
|
|
/* Thumb insn. */
|
| 7683 |
|
|
insn = bfd_get_16 (input_bfd, contents + rel->r_offset);
|
| 7684 |
|
|
if ((insn & 0xff78) == 0x4478) /* add rx, pc */
|
| 7685 |
|
|
{
|
| 7686 |
|
|
if (is_local)
|
| 7687 |
|
|
/* nop */
|
| 7688 |
|
|
bfd_put_16 (input_bfd, 0x46c0, contents + rel->r_offset);
|
| 7689 |
|
|
}
|
| 7690 |
|
|
else if ((insn & 0xffc0) == 0x6840) /* ldr rx,[ry,#4] */
|
| 7691 |
|
|
{
|
| 7692 |
|
|
if (is_local)
|
| 7693 |
|
|
/* nop */
|
| 7694 |
|
|
bfd_put_16 (input_bfd, 0x46c0, contents + rel->r_offset);
|
| 7695 |
|
|
else
|
| 7696 |
|
|
/* ldr rx,[ry] */
|
| 7697 |
|
|
bfd_put_16 (input_bfd, insn & 0xf83f, contents + rel->r_offset);
|
| 7698 |
|
|
}
|
| 7699 |
|
|
else if ((insn & 0xff87) == 0x4780) /* blx rx */
|
| 7700 |
|
|
{
|
| 7701 |
|
|
if (is_local)
|
| 7702 |
|
|
/* nop */
|
| 7703 |
|
|
bfd_put_16 (input_bfd, 0x46c0, contents + rel->r_offset);
|
| 7704 |
|
|
else
|
| 7705 |
|
|
/* mov r0, rx */
|
| 7706 |
|
|
bfd_put_16 (input_bfd, 0x4600 | (insn & 0x78),
|
| 7707 |
|
|
contents + rel->r_offset);
|
| 7708 |
|
|
}
|
| 7709 |
|
|
else
|
| 7710 |
|
|
{
|
| 7711 |
|
|
if ((insn & 0xf000) == 0xf000 || (insn & 0xf800) == 0xe800)
|
| 7712 |
|
|
/* It's a 32 bit instruction, fetch the rest of it for
|
| 7713 |
|
|
error generation. */
|
| 7714 |
|
|
insn = (insn << 16)
|
| 7715 |
|
|
| bfd_get_16 (input_bfd, contents + rel->r_offset + 2);
|
| 7716 |
|
|
(*_bfd_error_handler)
|
| 7717 |
|
|
(_("%B(%A+0x%lx):unexpected Thumb instruction '0x%x' in TLS trampoline"),
|
| 7718 |
|
|
input_bfd, input_sec, (unsigned long)rel->r_offset, insn);
|
| 7719 |
|
|
return bfd_reloc_notsupported;
|
| 7720 |
|
|
}
|
| 7721 |
|
|
break;
|
| 7722 |
|
|
|
| 7723 |
|
|
case R_ARM_TLS_DESCSEQ:
|
| 7724 |
|
|
/* arm insn. */
|
| 7725 |
|
|
insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
|
| 7726 |
|
|
if ((insn & 0xffff0ff0) == 0xe08f0000) /* add rx,pc,ry */
|
| 7727 |
|
|
{
|
| 7728 |
|
|
if (is_local)
|
| 7729 |
|
|
/* mov rx, ry */
|
| 7730 |
|
|
bfd_put_32 (input_bfd, 0xe1a00000 | (insn & 0xffff),
|
| 7731 |
|
|
contents + rel->r_offset);
|
| 7732 |
|
|
}
|
| 7733 |
|
|
else if ((insn & 0xfff00fff) == 0xe5900004) /* ldr rx,[ry,#4]*/
|
| 7734 |
|
|
{
|
| 7735 |
|
|
if (is_local)
|
| 7736 |
|
|
/* nop */
|
| 7737 |
|
|
bfd_put_32 (input_bfd, 0xe1a00000, contents + rel->r_offset);
|
| 7738 |
|
|
else
|
| 7739 |
|
|
/* ldr rx,[ry] */
|
| 7740 |
|
|
bfd_put_32 (input_bfd, insn & 0xfffff000,
|
| 7741 |
|
|
contents + rel->r_offset);
|
| 7742 |
|
|
}
|
| 7743 |
|
|
else if ((insn & 0xfffffff0) == 0xe12fff30) /* blx rx */
|
| 7744 |
|
|
{
|
| 7745 |
|
|
if (is_local)
|
| 7746 |
|
|
/* nop */
|
| 7747 |
|
|
bfd_put_32 (input_bfd, 0xe1a00000, contents + rel->r_offset);
|
| 7748 |
|
|
else
|
| 7749 |
|
|
/* mov r0, rx */
|
| 7750 |
|
|
bfd_put_32 (input_bfd, 0xe1a00000 | (insn & 0xf),
|
| 7751 |
|
|
contents + rel->r_offset);
|
| 7752 |
|
|
}
|
| 7753 |
|
|
else
|
| 7754 |
|
|
{
|
| 7755 |
|
|
(*_bfd_error_handler)
|
| 7756 |
|
|
(_("%B(%A+0x%lx):unexpected ARM instruction '0x%x' in TLS trampoline"),
|
| 7757 |
|
|
input_bfd, input_sec, (unsigned long)rel->r_offset, insn);
|
| 7758 |
|
|
return bfd_reloc_notsupported;
|
| 7759 |
|
|
}
|
| 7760 |
|
|
break;
|
| 7761 |
|
|
|
| 7762 |
|
|
case R_ARM_TLS_CALL:
|
| 7763 |
|
|
/* GD->IE relaxation, turn the instruction into 'nop' or
|
| 7764 |
|
|
'ldr r0, [pc,r0]' */
|
| 7765 |
|
|
insn = is_local ? 0xe1a00000 : 0xe79f0000;
|
| 7766 |
|
|
bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
|
| 7767 |
|
|
break;
|
| 7768 |
|
|
|
| 7769 |
|
|
case R_ARM_THM_TLS_CALL:
|
| 7770 |
|
|
/* GD->IE relaxation */
|
| 7771 |
|
|
if (!is_local)
|
| 7772 |
|
|
/* add r0,pc; ldr r0, [r0] */
|
| 7773 |
|
|
insn = 0x44786800;
|
| 7774 |
|
|
else if (arch_has_thumb2_nop (globals))
|
| 7775 |
|
|
/* nop.w */
|
| 7776 |
|
|
insn = 0xf3af8000;
|
| 7777 |
|
|
else
|
| 7778 |
|
|
/* nop; nop */
|
| 7779 |
|
|
insn = 0xbf00bf00;
|
| 7780 |
|
|
|
| 7781 |
|
|
bfd_put_16 (input_bfd, insn >> 16, contents + rel->r_offset);
|
| 7782 |
|
|
bfd_put_16 (input_bfd, insn & 0xffff, contents + rel->r_offset + 2);
|
| 7783 |
|
|
break;
|
| 7784 |
|
|
}
|
| 7785 |
|
|
return bfd_reloc_ok;
|
| 7786 |
|
|
}
|
| 7787 |
|
|
|
| 7788 |
|
|
/* For a given value of n, calculate the value of G_n as required to
|
| 7789 |
|
|
deal with group relocations. We return it in the form of an
|
| 7790 |
|
|
encoded constant-and-rotation, together with the final residual. If n is
|
| 7791 |
|
|
specified as less than zero, then final_residual is filled with the
|
| 7792 |
|
|
input value and no further action is performed. */
|
| 7793 |
|
|
|
| 7794 |
|
|
static bfd_vma
|
| 7795 |
|
|
calculate_group_reloc_mask (bfd_vma value, int n, bfd_vma *final_residual)
|
| 7796 |
|
|
{
|
| 7797 |
|
|
int current_n;
|
| 7798 |
|
|
bfd_vma g_n;
|
| 7799 |
|
|
bfd_vma encoded_g_n = 0;
|
| 7800 |
|
|
bfd_vma residual = value; /* Also known as Y_n. */
|
| 7801 |
|
|
|
| 7802 |
|
|
for (current_n = 0; current_n <= n; current_n++)
|
| 7803 |
|
|
{
|
| 7804 |
|
|
int shift;
|
| 7805 |
|
|
|
| 7806 |
|
|
/* Calculate which part of the value to mask. */
|
| 7807 |
|
|
if (residual == 0)
|
| 7808 |
|
|
shift = 0;
|
| 7809 |
|
|
else
|
| 7810 |
|
|
{
|
| 7811 |
|
|
int msb;
|
| 7812 |
|
|
|
| 7813 |
|
|
/* Determine the most significant bit in the residual and
|
| 7814 |
|
|
align the resulting value to a 2-bit boundary. */
|
| 7815 |
|
|
for (msb = 30; msb >= 0; msb -= 2)
|
| 7816 |
|
|
if (residual & (3 << msb))
|
| 7817 |
|
|
break;
|
| 7818 |
|
|
|
| 7819 |
|
|
/* The desired shift is now (msb - 6), or zero, whichever
|
| 7820 |
|
|
is the greater. */
|
| 7821 |
|
|
shift = msb - 6;
|
| 7822 |
|
|
if (shift < 0)
|
| 7823 |
|
|
shift = 0;
|
| 7824 |
|
|
}
|
| 7825 |
|
|
|
| 7826 |
|
|
/* Calculate g_n in 32-bit as well as encoded constant+rotation form. */
|
| 7827 |
|
|
g_n = residual & (0xff << shift);
|
| 7828 |
|
|
encoded_g_n = (g_n >> shift)
|
| 7829 |
|
|
| ((g_n <= 0xff ? 0 : (32 - shift) / 2) << 8);
|
| 7830 |
|
|
|
| 7831 |
|
|
/* Calculate the residual for the next time around. */
|
| 7832 |
|
|
residual &= ~g_n;
|
| 7833 |
|
|
}
|
| 7834 |
|
|
|
| 7835 |
|
|
*final_residual = residual;
|
| 7836 |
|
|
|
| 7837 |
|
|
return encoded_g_n;
|
| 7838 |
|
|
}
|
| 7839 |
|
|
|
| 7840 |
|
|
/* Given an ARM instruction, determine whether it is an ADD or a SUB.
|
| 7841 |
|
|
Returns 1 if it is an ADD, -1 if it is a SUB, and 0 otherwise. */
|
| 7842 |
|
|
|
| 7843 |
|
|
static int
|
| 7844 |
|
|
identify_add_or_sub (bfd_vma insn)
|
| 7845 |
|
|
{
|
| 7846 |
|
|
int opcode = insn & 0x1e00000;
|
| 7847 |
|
|
|
| 7848 |
|
|
if (opcode == 1 << 23) /* ADD */
|
| 7849 |
|
|
return 1;
|
| 7850 |
|
|
|
| 7851 |
|
|
if (opcode == 1 << 22) /* SUB */
|
| 7852 |
|
|
return -1;
|
| 7853 |
|
|
|
| 7854 |
|
|
return 0;
|
| 7855 |
|
|
}
|
| 7856 |
|
|
|
| 7857 |
|
|
/* Perform a relocation as part of a final link. */
|
| 7858 |
|
|
|
| 7859 |
|
|
static bfd_reloc_status_type
|
| 7860 |
|
|
elf32_arm_final_link_relocate (reloc_howto_type * howto,
|
| 7861 |
|
|
bfd * input_bfd,
|
| 7862 |
|
|
bfd * output_bfd,
|
| 7863 |
|
|
asection * input_section,
|
| 7864 |
|
|
bfd_byte * contents,
|
| 7865 |
|
|
Elf_Internal_Rela * rel,
|
| 7866 |
|
|
bfd_vma value,
|
| 7867 |
|
|
struct bfd_link_info * info,
|
| 7868 |
|
|
asection * sym_sec,
|
| 7869 |
|
|
const char * sym_name,
|
| 7870 |
|
|
unsigned char st_type,
|
| 7871 |
|
|
enum arm_st_branch_type branch_type,
|
| 7872 |
|
|
struct elf_link_hash_entry * h,
|
| 7873 |
|
|
bfd_boolean * unresolved_reloc_p,
|
| 7874 |
|
|
char ** error_message)
|
| 7875 |
|
|
{
|
| 7876 |
|
|
unsigned long r_type = howto->type;
|
| 7877 |
|
|
unsigned long r_symndx;
|
| 7878 |
|
|
bfd_byte * hit_data = contents + rel->r_offset;
|
| 7879 |
|
|
bfd_vma * local_got_offsets;
|
| 7880 |
|
|
bfd_vma * local_tlsdesc_gotents;
|
| 7881 |
|
|
asection * sgot;
|
| 7882 |
|
|
asection * splt;
|
| 7883 |
|
|
asection * sreloc = NULL;
|
| 7884 |
|
|
asection * srelgot;
|
| 7885 |
|
|
bfd_vma addend;
|
| 7886 |
|
|
bfd_signed_vma signed_addend;
|
| 7887 |
|
|
unsigned char dynreloc_st_type;
|
| 7888 |
|
|
bfd_vma dynreloc_value;
|
| 7889 |
|
|
struct elf32_arm_link_hash_table * globals;
|
| 7890 |
|
|
struct elf32_arm_link_hash_entry *eh;
|
| 7891 |
|
|
union gotplt_union *root_plt;
|
| 7892 |
|
|
struct arm_plt_info *arm_plt;
|
| 7893 |
|
|
bfd_vma plt_offset;
|
| 7894 |
|
|
bfd_vma gotplt_offset;
|
| 7895 |
|
|
bfd_boolean has_iplt_entry;
|
| 7896 |
|
|
|
| 7897 |
|
|
globals = elf32_arm_hash_table (info);
|
| 7898 |
|
|
if (globals == NULL)
|
| 7899 |
|
|
return bfd_reloc_notsupported;
|
| 7900 |
|
|
|
| 7901 |
|
|
BFD_ASSERT (is_arm_elf (input_bfd));
|
| 7902 |
|
|
|
| 7903 |
|
|
/* Some relocation types map to different relocations depending on the
|
| 7904 |
|
|
target. We pick the right one here. */
|
| 7905 |
|
|
r_type = arm_real_reloc_type (globals, r_type);
|
| 7906 |
|
|
|
| 7907 |
|
|
/* It is possible to have linker relaxations on some TLS access
|
| 7908 |
|
|
models. Update our information here. */
|
| 7909 |
|
|
r_type = elf32_arm_tls_transition (info, r_type, h);
|
| 7910 |
|
|
|
| 7911 |
|
|
if (r_type != howto->type)
|
| 7912 |
|
|
howto = elf32_arm_howto_from_type (r_type);
|
| 7913 |
|
|
|
| 7914 |
|
|
/* If the start address has been set, then set the EF_ARM_HASENTRY
|
| 7915 |
|
|
flag. Setting this more than once is redundant, but the cost is
|
| 7916 |
|
|
not too high, and it keeps the code simple.
|
| 7917 |
|
|
|
| 7918 |
|
|
The test is done here, rather than somewhere else, because the
|
| 7919 |
|
|
start address is only set just before the final link commences.
|
| 7920 |
|
|
|
| 7921 |
|
|
Note - if the user deliberately sets a start address of 0, the
|
| 7922 |
|
|
flag will not be set. */
|
| 7923 |
|
|
if (bfd_get_start_address (output_bfd) != 0)
|
| 7924 |
|
|
elf_elfheader (output_bfd)->e_flags |= EF_ARM_HASENTRY;
|
| 7925 |
|
|
|
| 7926 |
|
|
eh = (struct elf32_arm_link_hash_entry *) h;
|
| 7927 |
|
|
sgot = globals->root.sgot;
|
| 7928 |
|
|
local_got_offsets = elf_local_got_offsets (input_bfd);
|
| 7929 |
|
|
local_tlsdesc_gotents = elf32_arm_local_tlsdesc_gotent (input_bfd);
|
| 7930 |
|
|
|
| 7931 |
|
|
if (globals->root.dynamic_sections_created)
|
| 7932 |
|
|
srelgot = globals->root.srelgot;
|
| 7933 |
|
|
else
|
| 7934 |
|
|
srelgot = NULL;
|
| 7935 |
|
|
|
| 7936 |
|
|
r_symndx = ELF32_R_SYM (rel->r_info);
|
| 7937 |
|
|
|
| 7938 |
|
|
if (globals->use_rel)
|
| 7939 |
|
|
{
|
| 7940 |
|
|
addend = bfd_get_32 (input_bfd, hit_data) & howto->src_mask;
|
| 7941 |
|
|
|
| 7942 |
|
|
if (addend & ((howto->src_mask + 1) >> 1))
|
| 7943 |
|
|
{
|
| 7944 |
|
|
signed_addend = -1;
|
| 7945 |
|
|
signed_addend &= ~ howto->src_mask;
|
| 7946 |
|
|
signed_addend |= addend;
|
| 7947 |
|
|
}
|
| 7948 |
|
|
else
|
| 7949 |
|
|
signed_addend = addend;
|
| 7950 |
|
|
}
|
| 7951 |
|
|
else
|
| 7952 |
|
|
addend = signed_addend = rel->r_addend;
|
| 7953 |
|
|
|
| 7954 |
|
|
/* Record the symbol information that should be used in dynamic
|
| 7955 |
|
|
relocations. */
|
| 7956 |
|
|
dynreloc_st_type = st_type;
|
| 7957 |
|
|
dynreloc_value = value;
|
| 7958 |
|
|
if (branch_type == ST_BRANCH_TO_THUMB)
|
| 7959 |
|
|
dynreloc_value |= 1;
|
| 7960 |
|
|
|
| 7961 |
|
|
/* Find out whether the symbol has a PLT. Set ST_VALUE, BRANCH_TYPE and
|
| 7962 |
|
|
VALUE appropriately for relocations that we resolve at link time. */
|
| 7963 |
|
|
has_iplt_entry = FALSE;
|
| 7964 |
|
|
if (elf32_arm_get_plt_info (input_bfd, eh, r_symndx, &root_plt, &arm_plt)
|
| 7965 |
|
|
&& root_plt->offset != (bfd_vma) -1)
|
| 7966 |
|
|
{
|
| 7967 |
|
|
plt_offset = root_plt->offset;
|
| 7968 |
|
|
gotplt_offset = arm_plt->got_offset;
|
| 7969 |
|
|
|
| 7970 |
|
|
if (h == NULL || eh->is_iplt)
|
| 7971 |
|
|
{
|
| 7972 |
|
|
has_iplt_entry = TRUE;
|
| 7973 |
|
|
splt = globals->root.iplt;
|
| 7974 |
|
|
|
| 7975 |
|
|
/* Populate .iplt entries here, because not all of them will
|
| 7976 |
|
|
be seen by finish_dynamic_symbol. The lower bit is set if
|
| 7977 |
|
|
we have already populated the entry. */
|
| 7978 |
|
|
if (plt_offset & 1)
|
| 7979 |
|
|
plt_offset--;
|
| 7980 |
|
|
else
|
| 7981 |
|
|
{
|
| 7982 |
|
|
elf32_arm_populate_plt_entry (output_bfd, info, root_plt, arm_plt,
|
| 7983 |
|
|
-1, dynreloc_value);
|
| 7984 |
|
|
root_plt->offset |= 1;
|
| 7985 |
|
|
}
|
| 7986 |
|
|
|
| 7987 |
|
|
/* Static relocations always resolve to the .iplt entry. */
|
| 7988 |
|
|
st_type = STT_FUNC;
|
| 7989 |
|
|
value = (splt->output_section->vma
|
| 7990 |
|
|
+ splt->output_offset
|
| 7991 |
|
|
+ plt_offset);
|
| 7992 |
|
|
branch_type = ST_BRANCH_TO_ARM;
|
| 7993 |
|
|
|
| 7994 |
|
|
/* If there are non-call relocations that resolve to the .iplt
|
| 7995 |
|
|
entry, then all dynamic ones must too. */
|
| 7996 |
|
|
if (arm_plt->noncall_refcount != 0)
|
| 7997 |
|
|
{
|
| 7998 |
|
|
dynreloc_st_type = st_type;
|
| 7999 |
|
|
dynreloc_value = value;
|
| 8000 |
|
|
}
|
| 8001 |
|
|
}
|
| 8002 |
|
|
else
|
| 8003 |
|
|
/* We populate the .plt entry in finish_dynamic_symbol. */
|
| 8004 |
|
|
splt = globals->root.splt;
|
| 8005 |
|
|
}
|
| 8006 |
|
|
else
|
| 8007 |
|
|
{
|
| 8008 |
|
|
splt = NULL;
|
| 8009 |
|
|
plt_offset = (bfd_vma) -1;
|
| 8010 |
|
|
gotplt_offset = (bfd_vma) -1;
|
| 8011 |
|
|
}
|
| 8012 |
|
|
|
| 8013 |
|
|
switch (r_type)
|
| 8014 |
|
|
{
|
| 8015 |
|
|
case R_ARM_NONE:
|
| 8016 |
|
|
/* We don't need to find a value for this symbol. It's just a
|
| 8017 |
|
|
marker. */
|
| 8018 |
|
|
*unresolved_reloc_p = FALSE;
|
| 8019 |
|
|
return bfd_reloc_ok;
|
| 8020 |
|
|
|
| 8021 |
|
|
case R_ARM_ABS12:
|
| 8022 |
|
|
if (!globals->vxworks_p)
|
| 8023 |
|
|
return elf32_arm_abs12_reloc (input_bfd, hit_data, value + addend);
|
| 8024 |
|
|
|
| 8025 |
|
|
case R_ARM_PC24:
|
| 8026 |
|
|
case R_ARM_ABS32:
|
| 8027 |
|
|
case R_ARM_ABS32_NOI:
|
| 8028 |
|
|
case R_ARM_REL32:
|
| 8029 |
|
|
case R_ARM_REL32_NOI:
|
| 8030 |
|
|
case R_ARM_CALL:
|
| 8031 |
|
|
case R_ARM_JUMP24:
|
| 8032 |
|
|
case R_ARM_XPC25:
|
| 8033 |
|
|
case R_ARM_PREL31:
|
| 8034 |
|
|
case R_ARM_PLT32:
|
| 8035 |
|
|
/* Handle relocations which should use the PLT entry. ABS32/REL32
|
| 8036 |
|
|
will use the symbol's value, which may point to a PLT entry, but we
|
| 8037 |
|
|
don't need to handle that here. If we created a PLT entry, all
|
| 8038 |
|
|
branches in this object should go to it, except if the PLT is too
|
| 8039 |
|
|
far away, in which case a long branch stub should be inserted. */
|
| 8040 |
|
|
if ((r_type != R_ARM_ABS32 && r_type != R_ARM_REL32
|
| 8041 |
|
|
&& r_type != R_ARM_ABS32_NOI && r_type != R_ARM_REL32_NOI
|
| 8042 |
|
|
&& r_type != R_ARM_CALL
|
| 8043 |
|
|
&& r_type != R_ARM_JUMP24
|
| 8044 |
|
|
&& r_type != R_ARM_PLT32)
|
| 8045 |
|
|
&& plt_offset != (bfd_vma) -1)
|
| 8046 |
|
|
{
|
| 8047 |
|
|
/* If we've created a .plt section, and assigned a PLT entry
|
| 8048 |
|
|
to this function, it must either be a STT_GNU_IFUNC reference
|
| 8049 |
|
|
or not be known to bind locally. In other cases, we should
|
| 8050 |
|
|
have cleared the PLT entry by now. */
|
| 8051 |
|
|
BFD_ASSERT (has_iplt_entry || !SYMBOL_CALLS_LOCAL (info, h));
|
| 8052 |
|
|
|
| 8053 |
|
|
value = (splt->output_section->vma
|
| 8054 |
|
|
+ splt->output_offset
|
| 8055 |
|
|
+ plt_offset);
|
| 8056 |
|
|
*unresolved_reloc_p = FALSE;
|
| 8057 |
|
|
return _bfd_final_link_relocate (howto, input_bfd, input_section,
|
| 8058 |
|
|
contents, rel->r_offset, value,
|
| 8059 |
|
|
rel->r_addend);
|
| 8060 |
|
|
}
|
| 8061 |
|
|
|
| 8062 |
|
|
/* When generating a shared object or relocatable executable, these
|
| 8063 |
|
|
relocations are copied into the output file to be resolved at
|
| 8064 |
|
|
run time. */
|
| 8065 |
|
|
if ((info->shared || globals->root.is_relocatable_executable)
|
| 8066 |
|
|
&& (input_section->flags & SEC_ALLOC)
|
| 8067 |
|
|
&& !(globals->vxworks_p
|
| 8068 |
|
|
&& strcmp (input_section->output_section->name,
|
| 8069 |
|
|
".tls_vars") == 0)
|
| 8070 |
|
|
&& ((r_type != R_ARM_REL32 && r_type != R_ARM_REL32_NOI)
|
| 8071 |
|
|
|| !SYMBOL_CALLS_LOCAL (info, h))
|
| 8072 |
|
|
&& (!strstr (input_section->name, STUB_SUFFIX))
|
| 8073 |
|
|
&& (h == NULL
|
| 8074 |
|
|
|| ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
|
| 8075 |
|
|
|| h->root.type != bfd_link_hash_undefweak)
|
| 8076 |
|
|
&& r_type != R_ARM_PC24
|
| 8077 |
|
|
&& r_type != R_ARM_CALL
|
| 8078 |
|
|
&& r_type != R_ARM_JUMP24
|
| 8079 |
|
|
&& r_type != R_ARM_PREL31
|
| 8080 |
|
|
&& r_type != R_ARM_PLT32)
|
| 8081 |
|
|
{
|
| 8082 |
|
|
Elf_Internal_Rela outrel;
|
| 8083 |
|
|
bfd_boolean skip, relocate;
|
| 8084 |
|
|
|
| 8085 |
|
|
*unresolved_reloc_p = FALSE;
|
| 8086 |
|
|
|
| 8087 |
|
|
if (sreloc == NULL && globals->root.dynamic_sections_created)
|
| 8088 |
|
|
{
|
| 8089 |
|
|
sreloc = _bfd_elf_get_dynamic_reloc_section (input_bfd, input_section,
|
| 8090 |
|
|
! globals->use_rel);
|
| 8091 |
|
|
|
| 8092 |
|
|
if (sreloc == NULL)
|
| 8093 |
|
|
return bfd_reloc_notsupported;
|
| 8094 |
|
|
}
|
| 8095 |
|
|
|
| 8096 |
|
|
skip = FALSE;
|
| 8097 |
|
|
relocate = FALSE;
|
| 8098 |
|
|
|
| 8099 |
|
|
outrel.r_addend = addend;
|
| 8100 |
|
|
outrel.r_offset =
|
| 8101 |
|
|
_bfd_elf_section_offset (output_bfd, info, input_section,
|
| 8102 |
|
|
rel->r_offset);
|
| 8103 |
|
|
if (outrel.r_offset == (bfd_vma) -1)
|
| 8104 |
|
|
skip = TRUE;
|
| 8105 |
|
|
else if (outrel.r_offset == (bfd_vma) -2)
|
| 8106 |
|
|
skip = TRUE, relocate = TRUE;
|
| 8107 |
|
|
outrel.r_offset += (input_section->output_section->vma
|
| 8108 |
|
|
+ input_section->output_offset);
|
| 8109 |
|
|
|
| 8110 |
|
|
if (skip)
|
| 8111 |
|
|
memset (&outrel, 0, sizeof outrel);
|
| 8112 |
|
|
else if (h != NULL
|
| 8113 |
|
|
&& h->dynindx != -1
|
| 8114 |
|
|
&& (!info->shared
|
| 8115 |
|
|
|| !info->symbolic
|
| 8116 |
|
|
|| !h->def_regular))
|
| 8117 |
|
|
outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
|
| 8118 |
|
|
else
|
| 8119 |
|
|
{
|
| 8120 |
|
|
int symbol;
|
| 8121 |
|
|
|
| 8122 |
|
|
/* This symbol is local, or marked to become local. */
|
| 8123 |
|
|
BFD_ASSERT (r_type == R_ARM_ABS32 || r_type == R_ARM_ABS32_NOI);
|
| 8124 |
|
|
if (globals->symbian_p)
|
| 8125 |
|
|
{
|
| 8126 |
|
|
asection *osec;
|
| 8127 |
|
|
|
| 8128 |
|
|
/* On Symbian OS, the data segment and text segement
|
| 8129 |
|
|
can be relocated independently. Therefore, we
|
| 8130 |
|
|
must indicate the segment to which this
|
| 8131 |
|
|
relocation is relative. The BPABI allows us to
|
| 8132 |
|
|
use any symbol in the right segment; we just use
|
| 8133 |
|
|
the section symbol as it is convenient. (We
|
| 8134 |
|
|
cannot use the symbol given by "h" directly as it
|
| 8135 |
|
|
will not appear in the dynamic symbol table.)
|
| 8136 |
|
|
|
| 8137 |
|
|
Note that the dynamic linker ignores the section
|
| 8138 |
|
|
symbol value, so we don't subtract osec->vma
|
| 8139 |
|
|
from the emitted reloc addend. */
|
| 8140 |
|
|
if (sym_sec)
|
| 8141 |
|
|
osec = sym_sec->output_section;
|
| 8142 |
|
|
else
|
| 8143 |
|
|
osec = input_section->output_section;
|
| 8144 |
|
|
symbol = elf_section_data (osec)->dynindx;
|
| 8145 |
|
|
if (symbol == 0)
|
| 8146 |
|
|
{
|
| 8147 |
|
|
struct elf_link_hash_table *htab = elf_hash_table (info);
|
| 8148 |
|
|
|
| 8149 |
|
|
if ((osec->flags & SEC_READONLY) == 0
|
| 8150 |
|
|
&& htab->data_index_section != NULL)
|
| 8151 |
|
|
osec = htab->data_index_section;
|
| 8152 |
|
|
else
|
| 8153 |
|
|
osec = htab->text_index_section;
|
| 8154 |
|
|
symbol = elf_section_data (osec)->dynindx;
|
| 8155 |
|
|
}
|
| 8156 |
|
|
BFD_ASSERT (symbol != 0);
|
| 8157 |
|
|
}
|
| 8158 |
|
|
else
|
| 8159 |
|
|
/* On SVR4-ish systems, the dynamic loader cannot
|
| 8160 |
|
|
relocate the text and data segments independently,
|
| 8161 |
|
|
so the symbol does not matter. */
|
| 8162 |
|
|
symbol = 0;
|
| 8163 |
|
|
if (dynreloc_st_type == STT_GNU_IFUNC)
|
| 8164 |
|
|
/* We have an STT_GNU_IFUNC symbol that doesn't resolve
|
| 8165 |
|
|
to the .iplt entry. Instead, every non-call reference
|
| 8166 |
|
|
must use an R_ARM_IRELATIVE relocation to obtain the
|
| 8167 |
|
|
correct run-time address. */
|
| 8168 |
|
|
outrel.r_info = ELF32_R_INFO (symbol, R_ARM_IRELATIVE);
|
| 8169 |
|
|
else
|
| 8170 |
|
|
outrel.r_info = ELF32_R_INFO (symbol, R_ARM_RELATIVE);
|
| 8171 |
|
|
if (globals->use_rel)
|
| 8172 |
|
|
relocate = TRUE;
|
| 8173 |
|
|
else
|
| 8174 |
|
|
outrel.r_addend += dynreloc_value;
|
| 8175 |
|
|
}
|
| 8176 |
|
|
|
| 8177 |
|
|
elf32_arm_add_dynreloc (output_bfd, info, sreloc, &outrel);
|
| 8178 |
|
|
|
| 8179 |
|
|
/* If this reloc is against an external symbol, we do not want to
|
| 8180 |
|
|
fiddle with the addend. Otherwise, we need to include the symbol
|
| 8181 |
|
|
value so that it becomes an addend for the dynamic reloc. */
|
| 8182 |
|
|
if (! relocate)
|
| 8183 |
|
|
return bfd_reloc_ok;
|
| 8184 |
|
|
|
| 8185 |
|
|
return _bfd_final_link_relocate (howto, input_bfd, input_section,
|
| 8186 |
|
|
contents, rel->r_offset,
|
| 8187 |
|
|
dynreloc_value, (bfd_vma) 0);
|
| 8188 |
|
|
}
|
| 8189 |
|
|
else switch (r_type)
|
| 8190 |
|
|
{
|
| 8191 |
|
|
case R_ARM_ABS12:
|
| 8192 |
|
|
return elf32_arm_abs12_reloc (input_bfd, hit_data, value + addend);
|
| 8193 |
|
|
|
| 8194 |
|
|
case R_ARM_XPC25: /* Arm BLX instruction. */
|
| 8195 |
|
|
case R_ARM_CALL:
|
| 8196 |
|
|
case R_ARM_JUMP24:
|
| 8197 |
|
|
case R_ARM_PC24: /* Arm B/BL instruction. */
|
| 8198 |
|
|
case R_ARM_PLT32:
|
| 8199 |
|
|
{
|
| 8200 |
|
|
struct elf32_arm_stub_hash_entry *stub_entry = NULL;
|
| 8201 |
|
|
|
| 8202 |
|
|
if (r_type == R_ARM_XPC25)
|
| 8203 |
|
|
{
|
| 8204 |
|
|
/* Check for Arm calling Arm function. */
|
| 8205 |
|
|
/* FIXME: Should we translate the instruction into a BL
|
| 8206 |
|
|
instruction instead ? */
|
| 8207 |
|
|
if (branch_type != ST_BRANCH_TO_THUMB)
|
| 8208 |
|
|
(*_bfd_error_handler)
|
| 8209 |
|
|
(_("\%B: Warning: Arm BLX instruction targets Arm function '%s'."),
|
| 8210 |
|
|
input_bfd,
|
| 8211 |
|
|
h ? h->root.root.string : "(local)");
|
| 8212 |
|
|
}
|
| 8213 |
|
|
else if (r_type == R_ARM_PC24)
|
| 8214 |
|
|
{
|
| 8215 |
|
|
/* Check for Arm calling Thumb function. */
|
| 8216 |
|
|
if (branch_type == ST_BRANCH_TO_THUMB)
|
| 8217 |
|
|
{
|
| 8218 |
|
|
if (elf32_arm_to_thumb_stub (info, sym_name, input_bfd,
|
| 8219 |
|
|
output_bfd, input_section,
|
| 8220 |
|
|
hit_data, sym_sec, rel->r_offset,
|
| 8221 |
|
|
signed_addend, value,
|
| 8222 |
|
|
error_message))
|
| 8223 |
|
|
return bfd_reloc_ok;
|
| 8224 |
|
|
else
|
| 8225 |
|
|
return bfd_reloc_dangerous;
|
| 8226 |
|
|
}
|
| 8227 |
|
|
}
|
| 8228 |
|
|
|
| 8229 |
|
|
/* Check if a stub has to be inserted because the
|
| 8230 |
|
|
destination is too far or we are changing mode. */
|
| 8231 |
|
|
if ( r_type == R_ARM_CALL
|
| 8232 |
|
|
|| r_type == R_ARM_JUMP24
|
| 8233 |
|
|
|| r_type == R_ARM_PLT32)
|
| 8234 |
|
|
{
|
| 8235 |
|
|
enum elf32_arm_stub_type stub_type = arm_stub_none;
|
| 8236 |
|
|
struct elf32_arm_link_hash_entry *hash;
|
| 8237 |
|
|
|
| 8238 |
|
|
hash = (struct elf32_arm_link_hash_entry *) h;
|
| 8239 |
|
|
stub_type = arm_type_of_stub (info, input_section, rel,
|
| 8240 |
|
|
st_type, &branch_type,
|
| 8241 |
|
|
hash, value, sym_sec,
|
| 8242 |
|
|
input_bfd, sym_name);
|
| 8243 |
|
|
|
| 8244 |
|
|
if (stub_type != arm_stub_none)
|
| 8245 |
|
|
{
|
| 8246 |
|
|
/* The target is out of reach, so redirect the
|
| 8247 |
|
|
branch to the local stub for this function. */
|
| 8248 |
|
|
stub_entry = elf32_arm_get_stub_entry (input_section,
|
| 8249 |
|
|
sym_sec, h,
|
| 8250 |
|
|
rel, globals,
|
| 8251 |
|
|
stub_type);
|
| 8252 |
163 |
khays |
{
|
| 8253 |
|
|
if (stub_entry != NULL)
|
| 8254 |
|
|
value = (stub_entry->stub_offset
|
| 8255 |
|
|
+ stub_entry->stub_sec->output_offset
|
| 8256 |
|
|
+ stub_entry->stub_sec->output_section->vma);
|
| 8257 |
|
|
|
| 8258 |
|
|
if (plt_offset != (bfd_vma) -1)
|
| 8259 |
|
|
*unresolved_reloc_p = FALSE;
|
| 8260 |
|
|
}
|
| 8261 |
14 |
khays |
}
|
| 8262 |
|
|
else
|
| 8263 |
|
|
{
|
| 8264 |
|
|
/* If the call goes through a PLT entry, make sure to
|
| 8265 |
|
|
check distance to the right destination address. */
|
| 8266 |
|
|
if (plt_offset != (bfd_vma) -1)
|
| 8267 |
|
|
{
|
| 8268 |
|
|
value = (splt->output_section->vma
|
| 8269 |
|
|
+ splt->output_offset
|
| 8270 |
|
|
+ plt_offset);
|
| 8271 |
|
|
*unresolved_reloc_p = FALSE;
|
| 8272 |
|
|
/* The PLT entry is in ARM mode, regardless of the
|
| 8273 |
|
|
target function. */
|
| 8274 |
|
|
branch_type = ST_BRANCH_TO_ARM;
|
| 8275 |
|
|
}
|
| 8276 |
|
|
}
|
| 8277 |
|
|
}
|
| 8278 |
|
|
|
| 8279 |
|
|
/* The ARM ELF ABI says that this reloc is computed as: S - P + A
|
| 8280 |
|
|
where:
|
| 8281 |
|
|
S is the address of the symbol in the relocation.
|
| 8282 |
|
|
P is address of the instruction being relocated.
|
| 8283 |
|
|
A is the addend (extracted from the instruction) in bytes.
|
| 8284 |
|
|
|
| 8285 |
|
|
S is held in 'value'.
|
| 8286 |
|
|
P is the base address of the section containing the
|
| 8287 |
|
|
instruction plus the offset of the reloc into that
|
| 8288 |
|
|
section, ie:
|
| 8289 |
|
|
(input_section->output_section->vma +
|
| 8290 |
|
|
input_section->output_offset +
|
| 8291 |
|
|
rel->r_offset).
|
| 8292 |
|
|
A is the addend, converted into bytes, ie:
|
| 8293 |
|
|
(signed_addend * 4)
|
| 8294 |
|
|
|
| 8295 |
|
|
Note: None of these operations have knowledge of the pipeline
|
| 8296 |
|
|
size of the processor, thus it is up to the assembler to
|
| 8297 |
|
|
encode this information into the addend. */
|
| 8298 |
|
|
value -= (input_section->output_section->vma
|
| 8299 |
|
|
+ input_section->output_offset);
|
| 8300 |
|
|
value -= rel->r_offset;
|
| 8301 |
|
|
if (globals->use_rel)
|
| 8302 |
|
|
value += (signed_addend << howto->size);
|
| 8303 |
|
|
else
|
| 8304 |
|
|
/* RELA addends do not have to be adjusted by howto->size. */
|
| 8305 |
|
|
value += signed_addend;
|
| 8306 |
|
|
|
| 8307 |
|
|
signed_addend = value;
|
| 8308 |
|
|
signed_addend >>= howto->rightshift;
|
| 8309 |
|
|
|
| 8310 |
|
|
/* A branch to an undefined weak symbol is turned into a jump to
|
| 8311 |
|
|
the next instruction unless a PLT entry will be created.
|
| 8312 |
|
|
Do the same for local undefined symbols (but not for STN_UNDEF).
|
| 8313 |
|
|
The jump to the next instruction is optimized as a NOP depending
|
| 8314 |
|
|
on the architecture. */
|
| 8315 |
|
|
if (h ? (h->root.type == bfd_link_hash_undefweak
|
| 8316 |
|
|
&& plt_offset == (bfd_vma) -1)
|
| 8317 |
|
|
: r_symndx != STN_UNDEF && bfd_is_und_section (sym_sec))
|
| 8318 |
|
|
{
|
| 8319 |
|
|
value = (bfd_get_32 (input_bfd, hit_data) & 0xf0000000);
|
| 8320 |
|
|
|
| 8321 |
|
|
if (arch_has_arm_nop (globals))
|
| 8322 |
|
|
value |= 0x0320f000;
|
| 8323 |
|
|
else
|
| 8324 |
|
|
value |= 0x01a00000; /* Using pre-UAL nop: mov r0, r0. */
|
| 8325 |
|
|
}
|
| 8326 |
|
|
else
|
| 8327 |
|
|
{
|
| 8328 |
|
|
/* Perform a signed range check. */
|
| 8329 |
|
|
if ( signed_addend > ((bfd_signed_vma) (howto->dst_mask >> 1))
|
| 8330 |
|
|
|| signed_addend < - ((bfd_signed_vma) ((howto->dst_mask + 1) >> 1)))
|
| 8331 |
|
|
return bfd_reloc_overflow;
|
| 8332 |
|
|
|
| 8333 |
|
|
addend = (value & 2);
|
| 8334 |
|
|
|
| 8335 |
|
|
value = (signed_addend & howto->dst_mask)
|
| 8336 |
|
|
| (bfd_get_32 (input_bfd, hit_data) & (~ howto->dst_mask));
|
| 8337 |
|
|
|
| 8338 |
|
|
if (r_type == R_ARM_CALL)
|
| 8339 |
|
|
{
|
| 8340 |
|
|
/* Set the H bit in the BLX instruction. */
|
| 8341 |
|
|
if (branch_type == ST_BRANCH_TO_THUMB)
|
| 8342 |
|
|
{
|
| 8343 |
|
|
if (addend)
|
| 8344 |
|
|
value |= (1 << 24);
|
| 8345 |
|
|
else
|
| 8346 |
|
|
value &= ~(bfd_vma)(1 << 24);
|
| 8347 |
|
|
}
|
| 8348 |
|
|
|
| 8349 |
|
|
/* Select the correct instruction (BL or BLX). */
|
| 8350 |
|
|
/* Only if we are not handling a BL to a stub. In this
|
| 8351 |
|
|
case, mode switching is performed by the stub. */
|
| 8352 |
|
|
if (branch_type == ST_BRANCH_TO_THUMB && !stub_entry)
|
| 8353 |
|
|
value |= (1 << 28);
|
| 8354 |
|
|
else if (stub_entry || branch_type != ST_BRANCH_UNKNOWN)
|
| 8355 |
|
|
{
|
| 8356 |
|
|
value &= ~(bfd_vma)(1 << 28);
|
| 8357 |
|
|
value |= (1 << 24);
|
| 8358 |
|
|
}
|
| 8359 |
|
|
}
|
| 8360 |
|
|
}
|
| 8361 |
|
|
}
|
| 8362 |
|
|
break;
|
| 8363 |
|
|
|
| 8364 |
|
|
case R_ARM_ABS32:
|
| 8365 |
|
|
value += addend;
|
| 8366 |
|
|
if (branch_type == ST_BRANCH_TO_THUMB)
|
| 8367 |
|
|
value |= 1;
|
| 8368 |
|
|
break;
|
| 8369 |
|
|
|
| 8370 |
|
|
case R_ARM_ABS32_NOI:
|
| 8371 |
|
|
value += addend;
|
| 8372 |
|
|
break;
|
| 8373 |
|
|
|
| 8374 |
|
|
case R_ARM_REL32:
|
| 8375 |
|
|
value += addend;
|
| 8376 |
|
|
if (branch_type == ST_BRANCH_TO_THUMB)
|
| 8377 |
|
|
value |= 1;
|
| 8378 |
|
|
value -= (input_section->output_section->vma
|
| 8379 |
|
|
+ input_section->output_offset + rel->r_offset);
|
| 8380 |
|
|
break;
|
| 8381 |
|
|
|
| 8382 |
|
|
case R_ARM_REL32_NOI:
|
| 8383 |
|
|
value += addend;
|
| 8384 |
|
|
value -= (input_section->output_section->vma
|
| 8385 |
|
|
+ input_section->output_offset + rel->r_offset);
|
| 8386 |
|
|
break;
|
| 8387 |
|
|
|
| 8388 |
|
|
case R_ARM_PREL31:
|
| 8389 |
|
|
value -= (input_section->output_section->vma
|
| 8390 |
|
|
+ input_section->output_offset + rel->r_offset);
|
| 8391 |
|
|
value += signed_addend;
|
| 8392 |
|
|
if (! h || h->root.type != bfd_link_hash_undefweak)
|
| 8393 |
|
|
{
|
| 8394 |
|
|
/* Check for overflow. */
|
| 8395 |
|
|
if ((value ^ (value >> 1)) & (1 << 30))
|
| 8396 |
|
|
return bfd_reloc_overflow;
|
| 8397 |
|
|
}
|
| 8398 |
|
|
value &= 0x7fffffff;
|
| 8399 |
|
|
value |= (bfd_get_32 (input_bfd, hit_data) & 0x80000000);
|
| 8400 |
|
|
if (branch_type == ST_BRANCH_TO_THUMB)
|
| 8401 |
|
|
value |= 1;
|
| 8402 |
|
|
break;
|
| 8403 |
|
|
}
|
| 8404 |
|
|
|
| 8405 |
|
|
bfd_put_32 (input_bfd, value, hit_data);
|
| 8406 |
|
|
return bfd_reloc_ok;
|
| 8407 |
|
|
|
| 8408 |
|
|
case R_ARM_ABS8:
|
| 8409 |
|
|
value += addend;
|
| 8410 |
|
|
|
| 8411 |
|
|
/* There is no way to tell whether the user intended to use a signed or
|
| 8412 |
|
|
unsigned addend. When checking for overflow we accept either,
|
| 8413 |
|
|
as specified by the AAELF. */
|
| 8414 |
|
|
if ((long) value > 0xff || (long) value < -0x80)
|
| 8415 |
|
|
return bfd_reloc_overflow;
|
| 8416 |
|
|
|
| 8417 |
|
|
bfd_put_8 (input_bfd, value, hit_data);
|
| 8418 |
|
|
return bfd_reloc_ok;
|
| 8419 |
|
|
|
| 8420 |
|
|
case R_ARM_ABS16:
|
| 8421 |
|
|
value += addend;
|
| 8422 |
|
|
|
| 8423 |
|
|
/* See comment for R_ARM_ABS8. */
|
| 8424 |
|
|
if ((long) value > 0xffff || (long) value < -0x8000)
|
| 8425 |
|
|
return bfd_reloc_overflow;
|
| 8426 |
|
|
|
| 8427 |
|
|
bfd_put_16 (input_bfd, value, hit_data);
|
| 8428 |
|
|
return bfd_reloc_ok;
|
| 8429 |
|
|
|
| 8430 |
|
|
case R_ARM_THM_ABS5:
|
| 8431 |
|
|
/* Support ldr and str instructions for the thumb. */
|
| 8432 |
|
|
if (globals->use_rel)
|
| 8433 |
|
|
{
|
| 8434 |
|
|
/* Need to refetch addend. */
|
| 8435 |
|
|
addend = bfd_get_16 (input_bfd, hit_data) & howto->src_mask;
|
| 8436 |
|
|
/* ??? Need to determine shift amount from operand size. */
|
| 8437 |
|
|
addend >>= howto->rightshift;
|
| 8438 |
|
|
}
|
| 8439 |
|
|
value += addend;
|
| 8440 |
|
|
|
| 8441 |
|
|
/* ??? Isn't value unsigned? */
|
| 8442 |
|
|
if ((long) value > 0x1f || (long) value < -0x10)
|
| 8443 |
|
|
return bfd_reloc_overflow;
|
| 8444 |
|
|
|
| 8445 |
|
|
/* ??? Value needs to be properly shifted into place first. */
|
| 8446 |
|
|
value |= bfd_get_16 (input_bfd, hit_data) & 0xf83f;
|
| 8447 |
|
|
bfd_put_16 (input_bfd, value, hit_data);
|
| 8448 |
|
|
return bfd_reloc_ok;
|
| 8449 |
|
|
|
| 8450 |
|
|
case R_ARM_THM_ALU_PREL_11_0:
|
| 8451 |
|
|
/* Corresponds to: addw.w reg, pc, #offset (and similarly for subw). */
|
| 8452 |
|
|
{
|
| 8453 |
|
|
bfd_vma insn;
|
| 8454 |
|
|
bfd_signed_vma relocation;
|
| 8455 |
|
|
|
| 8456 |
|
|
insn = (bfd_get_16 (input_bfd, hit_data) << 16)
|
| 8457 |
|
|
| bfd_get_16 (input_bfd, hit_data + 2);
|
| 8458 |
|
|
|
| 8459 |
|
|
if (globals->use_rel)
|
| 8460 |
|
|
{
|
| 8461 |
|
|
signed_addend = (insn & 0xff) | ((insn & 0x7000) >> 4)
|
| 8462 |
|
|
| ((insn & (1 << 26)) >> 15);
|
| 8463 |
|
|
if (insn & 0xf00000)
|
| 8464 |
|
|
signed_addend = -signed_addend;
|
| 8465 |
|
|
}
|
| 8466 |
|
|
|
| 8467 |
|
|
relocation = value + signed_addend;
|
| 8468 |
|
|
relocation -= (input_section->output_section->vma
|
| 8469 |
|
|
+ input_section->output_offset
|
| 8470 |
|
|
+ rel->r_offset);
|
| 8471 |
|
|
|
| 8472 |
|
|
value = abs (relocation);
|
| 8473 |
|
|
|
| 8474 |
|
|
if (value >= 0x1000)
|
| 8475 |
|
|
return bfd_reloc_overflow;
|
| 8476 |
|
|
|
| 8477 |
|
|
insn = (insn & 0xfb0f8f00) | (value & 0xff)
|
| 8478 |
|
|
| ((value & 0x700) << 4)
|
| 8479 |
|
|
| ((value & 0x800) << 15);
|
| 8480 |
|
|
if (relocation < 0)
|
| 8481 |
|
|
insn |= 0xa00000;
|
| 8482 |
|
|
|
| 8483 |
|
|
bfd_put_16 (input_bfd, insn >> 16, hit_data);
|
| 8484 |
|
|
bfd_put_16 (input_bfd, insn & 0xffff, hit_data + 2);
|
| 8485 |
|
|
|
| 8486 |
|
|
return bfd_reloc_ok;
|
| 8487 |
|
|
}
|
| 8488 |
|
|
|
| 8489 |
|
|
case R_ARM_THM_PC8:
|
| 8490 |
|
|
/* PR 10073: This reloc is not generated by the GNU toolchain,
|
| 8491 |
|
|
but it is supported for compatibility with third party libraries
|
| 8492 |
|
|
generated by other compilers, specifically the ARM/IAR. */
|
| 8493 |
|
|
{
|
| 8494 |
|
|
bfd_vma insn;
|
| 8495 |
|
|
bfd_signed_vma relocation;
|
| 8496 |
|
|
|
| 8497 |
|
|
insn = bfd_get_16 (input_bfd, hit_data);
|
| 8498 |
|
|
|
| 8499 |
|
|
if (globals->use_rel)
|
| 8500 |
|
|
addend = (insn & 0x00ff) << 2;
|
| 8501 |
|
|
|
| 8502 |
|
|
relocation = value + addend;
|
| 8503 |
|
|
relocation -= (input_section->output_section->vma
|
| 8504 |
|
|
+ input_section->output_offset
|
| 8505 |
|
|
+ rel->r_offset);
|
| 8506 |
|
|
|
| 8507 |
|
|
value = abs (relocation);
|
| 8508 |
|
|
|
| 8509 |
|
|
/* We do not check for overflow of this reloc. Although strictly
|
| 8510 |
|
|
speaking this is incorrect, it appears to be necessary in order
|
| 8511 |
|
|
to work with IAR generated relocs. Since GCC and GAS do not
|
| 8512 |
|
|
generate R_ARM_THM_PC8 relocs, the lack of a check should not be
|
| 8513 |
|
|
a problem for them. */
|
| 8514 |
|
|
value &= 0x3fc;
|
| 8515 |
|
|
|
| 8516 |
|
|
insn = (insn & 0xff00) | (value >> 2);
|
| 8517 |
|
|
|
| 8518 |
|
|
bfd_put_16 (input_bfd, insn, hit_data);
|
| 8519 |
|
|
|
| 8520 |
|
|
return bfd_reloc_ok;
|
| 8521 |
|
|
}
|
| 8522 |
|
|
|
| 8523 |
|
|
case R_ARM_THM_PC12:
|
| 8524 |
|
|
/* Corresponds to: ldr.w reg, [pc, #offset]. */
|
| 8525 |
|
|
{
|
| 8526 |
|
|
bfd_vma insn;
|
| 8527 |
|
|
bfd_signed_vma relocation;
|
| 8528 |
|
|
|
| 8529 |
|
|
insn = (bfd_get_16 (input_bfd, hit_data) << 16)
|
| 8530 |
|
|
| bfd_get_16 (input_bfd, hit_data + 2);
|
| 8531 |
|
|
|
| 8532 |
|
|
if (globals->use_rel)
|
| 8533 |
|
|
{
|
| 8534 |
|
|
signed_addend = insn & 0xfff;
|
| 8535 |
|
|
if (!(insn & (1 << 23)))
|
| 8536 |
|
|
signed_addend = -signed_addend;
|
| 8537 |
|
|
}
|
| 8538 |
|
|
|
| 8539 |
|
|
relocation = value + signed_addend;
|
| 8540 |
|
|
relocation -= (input_section->output_section->vma
|
| 8541 |
|
|
+ input_section->output_offset
|
| 8542 |
|
|
+ rel->r_offset);
|
| 8543 |
|
|
|
| 8544 |
|
|
value = abs (relocation);
|
| 8545 |
|
|
|
| 8546 |
|
|
if (value >= 0x1000)
|
| 8547 |
|
|
return bfd_reloc_overflow;
|
| 8548 |
|
|
|
| 8549 |
|
|
insn = (insn & 0xff7ff000) | value;
|
| 8550 |
|
|
if (relocation >= 0)
|
| 8551 |
|
|
insn |= (1 << 23);
|
| 8552 |
|
|
|
| 8553 |
|
|
bfd_put_16 (input_bfd, insn >> 16, hit_data);
|
| 8554 |
|
|
bfd_put_16 (input_bfd, insn & 0xffff, hit_data + 2);
|
| 8555 |
|
|
|
| 8556 |
|
|
return bfd_reloc_ok;
|
| 8557 |
|
|
}
|
| 8558 |
|
|
|
| 8559 |
|
|
case R_ARM_THM_XPC22:
|
| 8560 |
|
|
case R_ARM_THM_CALL:
|
| 8561 |
|
|
case R_ARM_THM_JUMP24:
|
| 8562 |
|
|
/* Thumb BL (branch long instruction). */
|
| 8563 |
|
|
{
|
| 8564 |
|
|
bfd_vma relocation;
|
| 8565 |
|
|
bfd_vma reloc_sign;
|
| 8566 |
|
|
bfd_boolean overflow = FALSE;
|
| 8567 |
|
|
bfd_vma upper_insn = bfd_get_16 (input_bfd, hit_data);
|
| 8568 |
|
|
bfd_vma lower_insn = bfd_get_16 (input_bfd, hit_data + 2);
|
| 8569 |
|
|
bfd_signed_vma reloc_signed_max;
|
| 8570 |
|
|
bfd_signed_vma reloc_signed_min;
|
| 8571 |
|
|
bfd_vma check;
|
| 8572 |
|
|
bfd_signed_vma signed_check;
|
| 8573 |
|
|
int bitsize;
|
| 8574 |
|
|
const int thumb2 = using_thumb2 (globals);
|
| 8575 |
|
|
|
| 8576 |
|
|
/* A branch to an undefined weak symbol is turned into a jump to
|
| 8577 |
|
|
the next instruction unless a PLT entry will be created.
|
| 8578 |
|
|
The jump to the next instruction is optimized as a NOP.W for
|
| 8579 |
|
|
Thumb-2 enabled architectures. */
|
| 8580 |
|
|
if (h && h->root.type == bfd_link_hash_undefweak
|
| 8581 |
|
|
&& plt_offset == (bfd_vma) -1)
|
| 8582 |
|
|
{
|
| 8583 |
|
|
if (arch_has_thumb2_nop (globals))
|
| 8584 |
|
|
{
|
| 8585 |
|
|
bfd_put_16 (input_bfd, 0xf3af, hit_data);
|
| 8586 |
|
|
bfd_put_16 (input_bfd, 0x8000, hit_data + 2);
|
| 8587 |
|
|
}
|
| 8588 |
|
|
else
|
| 8589 |
|
|
{
|
| 8590 |
|
|
bfd_put_16 (input_bfd, 0xe000, hit_data);
|
| 8591 |
|
|
bfd_put_16 (input_bfd, 0xbf00, hit_data + 2);
|
| 8592 |
|
|
}
|
| 8593 |
|
|
return bfd_reloc_ok;
|
| 8594 |
|
|
}
|
| 8595 |
|
|
|
| 8596 |
|
|
/* Fetch the addend. We use the Thumb-2 encoding (backwards compatible
|
| 8597 |
|
|
with Thumb-1) involving the J1 and J2 bits. */
|
| 8598 |
|
|
if (globals->use_rel)
|
| 8599 |
|
|
{
|
| 8600 |
|
|
bfd_vma s = (upper_insn & (1 << 10)) >> 10;
|
| 8601 |
|
|
bfd_vma upper = upper_insn & 0x3ff;
|
| 8602 |
|
|
bfd_vma lower = lower_insn & 0x7ff;
|
| 8603 |
|
|
bfd_vma j1 = (lower_insn & (1 << 13)) >> 13;
|
| 8604 |
|
|
bfd_vma j2 = (lower_insn & (1 << 11)) >> 11;
|
| 8605 |
|
|
bfd_vma i1 = j1 ^ s ? 0 : 1;
|
| 8606 |
|
|
bfd_vma i2 = j2 ^ s ? 0 : 1;
|
| 8607 |
|
|
|
| 8608 |
|
|
addend = (i1 << 23) | (i2 << 22) | (upper << 12) | (lower << 1);
|
| 8609 |
|
|
/* Sign extend. */
|
| 8610 |
|
|
addend = (addend | ((s ? 0 : 1) << 24)) - (1 << 24);
|
| 8611 |
|
|
|
| 8612 |
|
|
signed_addend = addend;
|
| 8613 |
|
|
}
|
| 8614 |
|
|
|
| 8615 |
|
|
if (r_type == R_ARM_THM_XPC22)
|
| 8616 |
|
|
{
|
| 8617 |
|
|
/* Check for Thumb to Thumb call. */
|
| 8618 |
|
|
/* FIXME: Should we translate the instruction into a BL
|
| 8619 |
|
|
instruction instead ? */
|
| 8620 |
|
|
if (branch_type == ST_BRANCH_TO_THUMB)
|
| 8621 |
|
|
(*_bfd_error_handler)
|
| 8622 |
|
|
(_("%B: Warning: Thumb BLX instruction targets thumb function '%s'."),
|
| 8623 |
|
|
input_bfd,
|
| 8624 |
|
|
h ? h->root.root.string : "(local)");
|
| 8625 |
|
|
}
|
| 8626 |
|
|
else
|
| 8627 |
|
|
{
|
| 8628 |
|
|
/* If it is not a call to Thumb, assume call to Arm.
|
| 8629 |
|
|
If it is a call relative to a section name, then it is not a
|
| 8630 |
|
|
function call at all, but rather a long jump. Calls through
|
| 8631 |
|
|
the PLT do not require stubs. */
|
| 8632 |
|
|
if (branch_type == ST_BRANCH_TO_ARM && plt_offset == (bfd_vma) -1)
|
| 8633 |
|
|
{
|
| 8634 |
|
|
if (globals->use_blx && r_type == R_ARM_THM_CALL)
|
| 8635 |
|
|
{
|
| 8636 |
|
|
/* Convert BL to BLX. */
|
| 8637 |
|
|
lower_insn = (lower_insn & ~0x1000) | 0x0800;
|
| 8638 |
|
|
}
|
| 8639 |
|
|
else if (( r_type != R_ARM_THM_CALL)
|
| 8640 |
|
|
&& (r_type != R_ARM_THM_JUMP24))
|
| 8641 |
|
|
{
|
| 8642 |
|
|
if (elf32_thumb_to_arm_stub
|
| 8643 |
|
|
(info, sym_name, input_bfd, output_bfd, input_section,
|
| 8644 |
|
|
hit_data, sym_sec, rel->r_offset, signed_addend, value,
|
| 8645 |
|
|
error_message))
|
| 8646 |
|
|
return bfd_reloc_ok;
|
| 8647 |
|
|
else
|
| 8648 |
|
|
return bfd_reloc_dangerous;
|
| 8649 |
|
|
}
|
| 8650 |
|
|
}
|
| 8651 |
|
|
else if (branch_type == ST_BRANCH_TO_THUMB
|
| 8652 |
|
|
&& globals->use_blx
|
| 8653 |
|
|
&& r_type == R_ARM_THM_CALL)
|
| 8654 |
|
|
{
|
| 8655 |
|
|
/* Make sure this is a BL. */
|
| 8656 |
|
|
lower_insn |= 0x1800;
|
| 8657 |
|
|
}
|
| 8658 |
|
|
}
|
| 8659 |
|
|
|
| 8660 |
|
|
enum elf32_arm_stub_type stub_type = arm_stub_none;
|
| 8661 |
|
|
if (r_type == R_ARM_THM_CALL || r_type == R_ARM_THM_JUMP24)
|
| 8662 |
|
|
{
|
| 8663 |
|
|
/* Check if a stub has to be inserted because the destination
|
| 8664 |
|
|
is too far. */
|
| 8665 |
|
|
struct elf32_arm_stub_hash_entry *stub_entry;
|
| 8666 |
|
|
struct elf32_arm_link_hash_entry *hash;
|
| 8667 |
|
|
|
| 8668 |
|
|
hash = (struct elf32_arm_link_hash_entry *) h;
|
| 8669 |
|
|
|
| 8670 |
|
|
stub_type = arm_type_of_stub (info, input_section, rel,
|
| 8671 |
|
|
st_type, &branch_type,
|
| 8672 |
|
|
hash, value, sym_sec,
|
| 8673 |
|
|
input_bfd, sym_name);
|
| 8674 |
|
|
|
| 8675 |
|
|
if (stub_type != arm_stub_none)
|
| 8676 |
|
|
{
|
| 8677 |
|
|
/* The target is out of reach or we are changing modes, so
|
| 8678 |
|
|
redirect the branch to the local stub for this
|
| 8679 |
|
|
function. */
|
| 8680 |
|
|
stub_entry = elf32_arm_get_stub_entry (input_section,
|
| 8681 |
|
|
sym_sec, h,
|
| 8682 |
|
|
rel, globals,
|
| 8683 |
|
|
stub_type);
|
| 8684 |
|
|
if (stub_entry != NULL)
|
| 8685 |
163 |
khays |
{
|
| 8686 |
|
|
value = (stub_entry->stub_offset
|
| 8687 |
|
|
+ stub_entry->stub_sec->output_offset
|
| 8688 |
|
|
+ stub_entry->stub_sec->output_section->vma);
|
| 8689 |
14 |
khays |
|
| 8690 |
163 |
khays |
if (plt_offset != (bfd_vma) -1)
|
| 8691 |
|
|
*unresolved_reloc_p = FALSE;
|
| 8692 |
|
|
}
|
| 8693 |
|
|
|
| 8694 |
14 |
khays |
/* If this call becomes a call to Arm, force BLX. */
|
| 8695 |
|
|
if (globals->use_blx && (r_type == R_ARM_THM_CALL))
|
| 8696 |
|
|
{
|
| 8697 |
|
|
if ((stub_entry
|
| 8698 |
|
|
&& !arm_stub_is_thumb (stub_entry->stub_type))
|
| 8699 |
|
|
|| branch_type != ST_BRANCH_TO_THUMB)
|
| 8700 |
|
|
lower_insn = (lower_insn & ~0x1000) | 0x0800;
|
| 8701 |
|
|
}
|
| 8702 |
|
|
}
|
| 8703 |
|
|
}
|
| 8704 |
|
|
|
| 8705 |
|
|
/* Handle calls via the PLT. */
|
| 8706 |
|
|
if (stub_type == arm_stub_none && plt_offset != (bfd_vma) -1)
|
| 8707 |
|
|
{
|
| 8708 |
|
|
value = (splt->output_section->vma
|
| 8709 |
|
|
+ splt->output_offset
|
| 8710 |
|
|
+ plt_offset);
|
| 8711 |
|
|
|
| 8712 |
|
|
if (globals->use_blx && r_type == R_ARM_THM_CALL)
|
| 8713 |
|
|
{
|
| 8714 |
|
|
/* If the Thumb BLX instruction is available, convert
|
| 8715 |
|
|
the BL to a BLX instruction to call the ARM-mode
|
| 8716 |
|
|
PLT entry. */
|
| 8717 |
|
|
lower_insn = (lower_insn & ~0x1000) | 0x0800;
|
| 8718 |
|
|
branch_type = ST_BRANCH_TO_ARM;
|
| 8719 |
|
|
}
|
| 8720 |
|
|
else
|
| 8721 |
|
|
{
|
| 8722 |
|
|
/* Target the Thumb stub before the ARM PLT entry. */
|
| 8723 |
|
|
value -= PLT_THUMB_STUB_SIZE;
|
| 8724 |
|
|
branch_type = ST_BRANCH_TO_THUMB;
|
| 8725 |
|
|
}
|
| 8726 |
|
|
*unresolved_reloc_p = FALSE;
|
| 8727 |
|
|
}
|
| 8728 |
|
|
|
| 8729 |
|
|
relocation = value + signed_addend;
|
| 8730 |
|
|
|
| 8731 |
|
|
relocation -= (input_section->output_section->vma
|
| 8732 |
|
|
+ input_section->output_offset
|
| 8733 |
|
|
+ rel->r_offset);
|
| 8734 |
|
|
|
| 8735 |
|
|
check = relocation >> howto->rightshift;
|
| 8736 |
|
|
|
| 8737 |
|
|
/* If this is a signed value, the rightshift just dropped
|
| 8738 |
|
|
leading 1 bits (assuming twos complement). */
|
| 8739 |
|
|
if ((bfd_signed_vma) relocation >= 0)
|
| 8740 |
|
|
signed_check = check;
|
| 8741 |
|
|
else
|
| 8742 |
|
|
signed_check = check | ~((bfd_vma) -1 >> howto->rightshift);
|
| 8743 |
|
|
|
| 8744 |
|
|
/* Calculate the permissable maximum and minimum values for
|
| 8745 |
|
|
this relocation according to whether we're relocating for
|
| 8746 |
|
|
Thumb-2 or not. */
|
| 8747 |
|
|
bitsize = howto->bitsize;
|
| 8748 |
|
|
if (!thumb2)
|
| 8749 |
|
|
bitsize -= 2;
|
| 8750 |
|
|
reloc_signed_max = (1 << (bitsize - 1)) - 1;
|
| 8751 |
|
|
reloc_signed_min = ~reloc_signed_max;
|
| 8752 |
|
|
|
| 8753 |
|
|
/* Assumes two's complement. */
|
| 8754 |
|
|
if (signed_check > reloc_signed_max || signed_check < reloc_signed_min)
|
| 8755 |
|
|
overflow = TRUE;
|
| 8756 |
|
|
|
| 8757 |
|
|
if ((lower_insn & 0x5000) == 0x4000)
|
| 8758 |
|
|
/* For a BLX instruction, make sure that the relocation is rounded up
|
| 8759 |
|
|
to a word boundary. This follows the semantics of the instruction
|
| 8760 |
|
|
which specifies that bit 1 of the target address will come from bit
|
| 8761 |
|
|
1 of the base address. */
|
| 8762 |
|
|
relocation = (relocation + 2) & ~ 3;
|
| 8763 |
|
|
|
| 8764 |
|
|
/* Put RELOCATION back into the insn. Assumes two's complement.
|
| 8765 |
|
|
We use the Thumb-2 encoding, which is safe even if dealing with
|
| 8766 |
|
|
a Thumb-1 instruction by virtue of our overflow check above. */
|
| 8767 |
|
|
reloc_sign = (signed_check < 0) ? 1 : 0;
|
| 8768 |
|
|
upper_insn = (upper_insn & ~(bfd_vma) 0x7ff)
|
| 8769 |
|
|
| ((relocation >> 12) & 0x3ff)
|
| 8770 |
|
|
| (reloc_sign << 10);
|
| 8771 |
|
|
lower_insn = (lower_insn & ~(bfd_vma) 0x2fff)
|
| 8772 |
|
|
| (((!((relocation >> 23) & 1)) ^ reloc_sign) << 13)
|
| 8773 |
|
|
| (((!((relocation >> 22) & 1)) ^ reloc_sign) << 11)
|
| 8774 |
|
|
| ((relocation >> 1) & 0x7ff);
|
| 8775 |
|
|
|
| 8776 |
|
|
/* Put the relocated value back in the object file: */
|
| 8777 |
|
|
bfd_put_16 (input_bfd, upper_insn, hit_data);
|
| 8778 |
|
|
bfd_put_16 (input_bfd, lower_insn, hit_data + 2);
|
| 8779 |
|
|
|
| 8780 |
|
|
return (overflow ? bfd_reloc_overflow : bfd_reloc_ok);
|
| 8781 |
|
|
}
|
| 8782 |
|
|
break;
|
| 8783 |
|
|
|
| 8784 |
|
|
case R_ARM_THM_JUMP19:
|
| 8785 |
|
|
/* Thumb32 conditional branch instruction. */
|
| 8786 |
|
|
{
|
| 8787 |
|
|
bfd_vma relocation;
|
| 8788 |
|
|
bfd_boolean overflow = FALSE;
|
| 8789 |
|
|
bfd_vma upper_insn = bfd_get_16 (input_bfd, hit_data);
|
| 8790 |
|
|
bfd_vma lower_insn = bfd_get_16 (input_bfd, hit_data + 2);
|
| 8791 |
|
|
bfd_signed_vma reloc_signed_max = 0xffffe;
|
| 8792 |
|
|
bfd_signed_vma reloc_signed_min = -0x100000;
|
| 8793 |
|
|
bfd_signed_vma signed_check;
|
| 8794 |
|
|
|
| 8795 |
|
|
/* Need to refetch the addend, reconstruct the top three bits,
|
| 8796 |
|
|
and squish the two 11 bit pieces together. */
|
| 8797 |
|
|
if (globals->use_rel)
|
| 8798 |
|
|
{
|
| 8799 |
|
|
bfd_vma S = (upper_insn & 0x0400) >> 10;
|
| 8800 |
|
|
bfd_vma upper = (upper_insn & 0x003f);
|
| 8801 |
|
|
bfd_vma J1 = (lower_insn & 0x2000) >> 13;
|
| 8802 |
|
|
bfd_vma J2 = (lower_insn & 0x0800) >> 11;
|
| 8803 |
|
|
bfd_vma lower = (lower_insn & 0x07ff);
|
| 8804 |
|
|
|
| 8805 |
|
|
upper |= J1 << 6;
|
| 8806 |
|
|
upper |= J2 << 7;
|
| 8807 |
|
|
upper |= (!S) << 8;
|
| 8808 |
|
|
upper -= 0x0100; /* Sign extend. */
|
| 8809 |
|
|
|
| 8810 |
|
|
addend = (upper << 12) | (lower << 1);
|
| 8811 |
|
|
signed_addend = addend;
|
| 8812 |
|
|
}
|
| 8813 |
|
|
|
| 8814 |
|
|
/* Handle calls via the PLT. */
|
| 8815 |
|
|
if (plt_offset != (bfd_vma) -1)
|
| 8816 |
|
|
{
|
| 8817 |
|
|
value = (splt->output_section->vma
|
| 8818 |
|
|
+ splt->output_offset
|
| 8819 |
|
|
+ plt_offset);
|
| 8820 |
|
|
/* Target the Thumb stub before the ARM PLT entry. */
|
| 8821 |
|
|
value -= PLT_THUMB_STUB_SIZE;
|
| 8822 |
|
|
*unresolved_reloc_p = FALSE;
|
| 8823 |
|
|
}
|
| 8824 |
|
|
|
| 8825 |
|
|
/* ??? Should handle interworking? GCC might someday try to
|
| 8826 |
|
|
use this for tail calls. */
|
| 8827 |
|
|
|
| 8828 |
|
|
relocation = value + signed_addend;
|
| 8829 |
|
|
relocation -= (input_section->output_section->vma
|
| 8830 |
|
|
+ input_section->output_offset
|
| 8831 |
|
|
+ rel->r_offset);
|
| 8832 |
|
|
signed_check = (bfd_signed_vma) relocation;
|
| 8833 |
|
|
|
| 8834 |
|
|
if (signed_check > reloc_signed_max || signed_check < reloc_signed_min)
|
| 8835 |
|
|
overflow = TRUE;
|
| 8836 |
|
|
|
| 8837 |
|
|
/* Put RELOCATION back into the insn. */
|
| 8838 |
|
|
{
|
| 8839 |
|
|
bfd_vma S = (relocation & 0x00100000) >> 20;
|
| 8840 |
|
|
bfd_vma J2 = (relocation & 0x00080000) >> 19;
|
| 8841 |
|
|
bfd_vma J1 = (relocation & 0x00040000) >> 18;
|
| 8842 |
|
|
bfd_vma hi = (relocation & 0x0003f000) >> 12;
|
| 8843 |
|
|
bfd_vma lo = (relocation & 0x00000ffe) >> 1;
|
| 8844 |
|
|
|
| 8845 |
|
|
upper_insn = (upper_insn & 0xfbc0) | (S << 10) | hi;
|
| 8846 |
|
|
lower_insn = (lower_insn & 0xd000) | (J1 << 13) | (J2 << 11) | lo;
|
| 8847 |
|
|
}
|
| 8848 |
|
|
|
| 8849 |
|
|
/* Put the relocated value back in the object file: */
|
| 8850 |
|
|
bfd_put_16 (input_bfd, upper_insn, hit_data);
|
| 8851 |
|
|
bfd_put_16 (input_bfd, lower_insn, hit_data + 2);
|
| 8852 |
|
|
|
| 8853 |
|
|
return (overflow ? bfd_reloc_overflow : bfd_reloc_ok);
|
| 8854 |
|
|
}
|
| 8855 |
|
|
|
| 8856 |
|
|
case R_ARM_THM_JUMP11:
|
| 8857 |
|
|
case R_ARM_THM_JUMP8:
|
| 8858 |
|
|
case R_ARM_THM_JUMP6:
|
| 8859 |
|
|
/* Thumb B (branch) instruction). */
|
| 8860 |
|
|
{
|
| 8861 |
|
|
bfd_signed_vma relocation;
|
| 8862 |
|
|
bfd_signed_vma reloc_signed_max = (1 << (howto->bitsize - 1)) - 1;
|
| 8863 |
|
|
bfd_signed_vma reloc_signed_min = ~ reloc_signed_max;
|
| 8864 |
|
|
bfd_signed_vma signed_check;
|
| 8865 |
|
|
|
| 8866 |
|
|
/* CZB cannot jump backward. */
|
| 8867 |
|
|
if (r_type == R_ARM_THM_JUMP6)
|
| 8868 |
|
|
reloc_signed_min = 0;
|
| 8869 |
|
|
|
| 8870 |
|
|
if (globals->use_rel)
|
| 8871 |
|
|
{
|
| 8872 |
|
|
/* Need to refetch addend. */
|
| 8873 |
|
|
addend = bfd_get_16 (input_bfd, hit_data) & howto->src_mask;
|
| 8874 |
|
|
if (addend & ((howto->src_mask + 1) >> 1))
|
| 8875 |
|
|
{
|
| 8876 |
|
|
signed_addend = -1;
|
| 8877 |
|
|
signed_addend &= ~ howto->src_mask;
|
| 8878 |
|
|
signed_addend |= addend;
|
| 8879 |
|
|
}
|
| 8880 |
|
|
else
|
| 8881 |
|
|
signed_addend = addend;
|
| 8882 |
|
|
/* The value in the insn has been right shifted. We need to
|
| 8883 |
|
|
undo this, so that we can perform the address calculation
|
| 8884 |
|
|
in terms of bytes. */
|
| 8885 |
|
|
signed_addend <<= howto->rightshift;
|
| 8886 |
|
|
}
|
| 8887 |
|
|
relocation = value + signed_addend;
|
| 8888 |
|
|
|
| 8889 |
|
|
relocation -= (input_section->output_section->vma
|
| 8890 |
|
|
+ input_section->output_offset
|
| 8891 |
|
|
+ rel->r_offset);
|
| 8892 |
|
|
|
| 8893 |
|
|
relocation >>= howto->rightshift;
|
| 8894 |
|
|
signed_check = relocation;
|
| 8895 |
|
|
|
| 8896 |
|
|
if (r_type == R_ARM_THM_JUMP6)
|
| 8897 |
|
|
relocation = ((relocation & 0x0020) << 4) | ((relocation & 0x001f) << 3);
|
| 8898 |
|
|
else
|
| 8899 |
|
|
relocation &= howto->dst_mask;
|
| 8900 |
|
|
relocation |= (bfd_get_16 (input_bfd, hit_data) & (~ howto->dst_mask));
|
| 8901 |
|
|
|
| 8902 |
|
|
bfd_put_16 (input_bfd, relocation, hit_data);
|
| 8903 |
|
|
|
| 8904 |
|
|
/* Assumes two's complement. */
|
| 8905 |
|
|
if (signed_check > reloc_signed_max || signed_check < reloc_signed_min)
|
| 8906 |
|
|
return bfd_reloc_overflow;
|
| 8907 |
|
|
|
| 8908 |
|
|
return bfd_reloc_ok;
|
| 8909 |
|
|
}
|
| 8910 |
|
|
|
| 8911 |
|
|
case R_ARM_ALU_PCREL7_0:
|
| 8912 |
|
|
case R_ARM_ALU_PCREL15_8:
|
| 8913 |
|
|
case R_ARM_ALU_PCREL23_15:
|
| 8914 |
|
|
{
|
| 8915 |
|
|
bfd_vma insn;
|
| 8916 |
|
|
bfd_vma relocation;
|
| 8917 |
|
|
|
| 8918 |
|
|
insn = bfd_get_32 (input_bfd, hit_data);
|
| 8919 |
|
|
if (globals->use_rel)
|
| 8920 |
|
|
{
|
| 8921 |
|
|
/* Extract the addend. */
|
| 8922 |
|
|
addend = (insn & 0xff) << ((insn & 0xf00) >> 7);
|
| 8923 |
|
|
signed_addend = addend;
|
| 8924 |
|
|
}
|
| 8925 |
|
|
relocation = value + signed_addend;
|
| 8926 |
|
|
|
| 8927 |
|
|
relocation -= (input_section->output_section->vma
|
| 8928 |
|
|
+ input_section->output_offset
|
| 8929 |
|
|
+ rel->r_offset);
|
| 8930 |
|
|
insn = (insn & ~0xfff)
|
| 8931 |
|
|
| ((howto->bitpos << 7) & 0xf00)
|
| 8932 |
|
|
| ((relocation >> howto->bitpos) & 0xff);
|
| 8933 |
|
|
bfd_put_32 (input_bfd, value, hit_data);
|
| 8934 |
|
|
}
|
| 8935 |
|
|
return bfd_reloc_ok;
|
| 8936 |
|
|
|
| 8937 |
|
|
case R_ARM_GNU_VTINHERIT:
|
| 8938 |
|
|
case R_ARM_GNU_VTENTRY:
|
| 8939 |
|
|
return bfd_reloc_ok;
|
| 8940 |
|
|
|
| 8941 |
|
|
case R_ARM_GOTOFF32:
|
| 8942 |
|
|
/* Relocation is relative to the start of the
|
| 8943 |
|
|
global offset table. */
|
| 8944 |
|
|
|
| 8945 |
|
|
BFD_ASSERT (sgot != NULL);
|
| 8946 |
|
|
if (sgot == NULL)
|
| 8947 |
|
|
return bfd_reloc_notsupported;
|
| 8948 |
|
|
|
| 8949 |
|
|
/* If we are addressing a Thumb function, we need to adjust the
|
| 8950 |
|
|
address by one, so that attempts to call the function pointer will
|
| 8951 |
|
|
correctly interpret it as Thumb code. */
|
| 8952 |
|
|
if (branch_type == ST_BRANCH_TO_THUMB)
|
| 8953 |
|
|
value += 1;
|
| 8954 |
|
|
|
| 8955 |
|
|
/* Note that sgot->output_offset is not involved in this
|
| 8956 |
|
|
calculation. We always want the start of .got. If we
|
| 8957 |
|
|
define _GLOBAL_OFFSET_TABLE in a different way, as is
|
| 8958 |
|
|
permitted by the ABI, we might have to change this
|
| 8959 |
|
|
calculation. */
|
| 8960 |
|
|
value -= sgot->output_section->vma;
|
| 8961 |
|
|
return _bfd_final_link_relocate (howto, input_bfd, input_section,
|
| 8962 |
|
|
contents, rel->r_offset, value,
|
| 8963 |
|
|
rel->r_addend);
|
| 8964 |
|
|
|
| 8965 |
|
|
case R_ARM_GOTPC:
|
| 8966 |
|
|
/* Use global offset table as symbol value. */
|
| 8967 |
|
|
BFD_ASSERT (sgot != NULL);
|
| 8968 |
|
|
|
| 8969 |
|
|
if (sgot == NULL)
|
| 8970 |
|
|
return bfd_reloc_notsupported;
|
| 8971 |
|
|
|
| 8972 |
|
|
*unresolved_reloc_p = FALSE;
|
| 8973 |
|
|
value = sgot->output_section->vma;
|
| 8974 |
|
|
return _bfd_final_link_relocate (howto, input_bfd, input_section,
|
| 8975 |
|
|
contents, rel->r_offset, value,
|
| 8976 |
|
|
rel->r_addend);
|
| 8977 |
|
|
|
| 8978 |
|
|
case R_ARM_GOT32:
|
| 8979 |
|
|
case R_ARM_GOT_PREL:
|
| 8980 |
|
|
/* Relocation is to the entry for this symbol in the
|
| 8981 |
|
|
global offset table. */
|
| 8982 |
|
|
if (sgot == NULL)
|
| 8983 |
|
|
return bfd_reloc_notsupported;
|
| 8984 |
|
|
|
| 8985 |
|
|
if (dynreloc_st_type == STT_GNU_IFUNC
|
| 8986 |
|
|
&& plt_offset != (bfd_vma) -1
|
| 8987 |
|
|
&& (h == NULL || SYMBOL_REFERENCES_LOCAL (info, h)))
|
| 8988 |
|
|
{
|
| 8989 |
|
|
/* We have a relocation against a locally-binding STT_GNU_IFUNC
|
| 8990 |
|
|
symbol, and the relocation resolves directly to the runtime
|
| 8991 |
|
|
target rather than to the .iplt entry. This means that any
|
| 8992 |
|
|
.got entry would be the same value as the .igot.plt entry,
|
| 8993 |
|
|
so there's no point creating both. */
|
| 8994 |
|
|
sgot = globals->root.igotplt;
|
| 8995 |
|
|
value = sgot->output_offset + gotplt_offset;
|
| 8996 |
|
|
}
|
| 8997 |
|
|
else if (h != NULL)
|
| 8998 |
|
|
{
|
| 8999 |
|
|
bfd_vma off;
|
| 9000 |
|
|
|
| 9001 |
|
|
off = h->got.offset;
|
| 9002 |
|
|
BFD_ASSERT (off != (bfd_vma) -1);
|
| 9003 |
|
|
if ((off & 1) != 0)
|
| 9004 |
|
|
{
|
| 9005 |
|
|
/* We have already processsed one GOT relocation against
|
| 9006 |
|
|
this symbol. */
|
| 9007 |
|
|
off &= ~1;
|
| 9008 |
|
|
if (globals->root.dynamic_sections_created
|
| 9009 |
|
|
&& !SYMBOL_REFERENCES_LOCAL (info, h))
|
| 9010 |
|
|
*unresolved_reloc_p = FALSE;
|
| 9011 |
|
|
}
|
| 9012 |
|
|
else
|
| 9013 |
|
|
{
|
| 9014 |
|
|
Elf_Internal_Rela outrel;
|
| 9015 |
|
|
|
| 9016 |
|
|
if (!SYMBOL_REFERENCES_LOCAL (info, h))
|
| 9017 |
|
|
{
|
| 9018 |
|
|
/* If the symbol doesn't resolve locally in a static
|
| 9019 |
|
|
object, we have an undefined reference. If the
|
| 9020 |
|
|
symbol doesn't resolve locally in a dynamic object,
|
| 9021 |
|
|
it should be resolved by the dynamic linker. */
|
| 9022 |
|
|
if (globals->root.dynamic_sections_created)
|
| 9023 |
|
|
{
|
| 9024 |
|
|
outrel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_GLOB_DAT);
|
| 9025 |
|
|
*unresolved_reloc_p = FALSE;
|
| 9026 |
|
|
}
|
| 9027 |
|
|
else
|
| 9028 |
|
|
outrel.r_info = 0;
|
| 9029 |
|
|
outrel.r_addend = 0;
|
| 9030 |
|
|
}
|
| 9031 |
|
|
else
|
| 9032 |
|
|
{
|
| 9033 |
|
|
if (dynreloc_st_type == STT_GNU_IFUNC)
|
| 9034 |
|
|
outrel.r_info = ELF32_R_INFO (0, R_ARM_IRELATIVE);
|
| 9035 |
|
|
else if (info->shared)
|
| 9036 |
|
|
outrel.r_info = ELF32_R_INFO (0, R_ARM_RELATIVE);
|
| 9037 |
|
|
else
|
| 9038 |
|
|
outrel.r_info = 0;
|
| 9039 |
|
|
outrel.r_addend = dynreloc_value;
|
| 9040 |
|
|
}
|
| 9041 |
|
|
|
| 9042 |
|
|
/* The GOT entry is initialized to zero by default.
|
| 9043 |
|
|
See if we should install a different value. */
|
| 9044 |
|
|
if (outrel.r_addend != 0
|
| 9045 |
|
|
&& (outrel.r_info == 0 || globals->use_rel))
|
| 9046 |
|
|
{
|
| 9047 |
|
|
bfd_put_32 (output_bfd, outrel.r_addend,
|
| 9048 |
|
|
sgot->contents + off);
|
| 9049 |
|
|
outrel.r_addend = 0;
|
| 9050 |
|
|
}
|
| 9051 |
|
|
|
| 9052 |
|
|
if (outrel.r_info != 0)
|
| 9053 |
|
|
{
|
| 9054 |
|
|
outrel.r_offset = (sgot->output_section->vma
|
| 9055 |
|
|
+ sgot->output_offset
|
| 9056 |
|
|
+ off);
|
| 9057 |
|
|
elf32_arm_add_dynreloc (output_bfd, info, srelgot, &outrel);
|
| 9058 |
|
|
}
|
| 9059 |
|
|
h->got.offset |= 1;
|
| 9060 |
|
|
}
|
| 9061 |
|
|
value = sgot->output_offset + off;
|
| 9062 |
|
|
}
|
| 9063 |
|
|
else
|
| 9064 |
|
|
{
|
| 9065 |
|
|
bfd_vma off;
|
| 9066 |
|
|
|
| 9067 |
|
|
BFD_ASSERT (local_got_offsets != NULL &&
|
| 9068 |
|
|
local_got_offsets[r_symndx] != (bfd_vma) -1);
|
| 9069 |
|
|
|
| 9070 |
|
|
off = local_got_offsets[r_symndx];
|
| 9071 |
|
|
|
| 9072 |
|
|
/* The offset must always be a multiple of 4. We use the
|
| 9073 |
|
|
least significant bit to record whether we have already
|
| 9074 |
|
|
generated the necessary reloc. */
|
| 9075 |
|
|
if ((off & 1) != 0)
|
| 9076 |
|
|
off &= ~1;
|
| 9077 |
|
|
else
|
| 9078 |
|
|
{
|
| 9079 |
|
|
if (globals->use_rel)
|
| 9080 |
|
|
bfd_put_32 (output_bfd, dynreloc_value, sgot->contents + off);
|
| 9081 |
|
|
|
| 9082 |
|
|
if (info->shared || dynreloc_st_type == STT_GNU_IFUNC)
|
| 9083 |
|
|
{
|
| 9084 |
|
|
Elf_Internal_Rela outrel;
|
| 9085 |
|
|
|
| 9086 |
|
|
outrel.r_addend = addend + dynreloc_value;
|
| 9087 |
|
|
outrel.r_offset = (sgot->output_section->vma
|
| 9088 |
|
|
+ sgot->output_offset
|
| 9089 |
|
|
+ off);
|
| 9090 |
|
|
if (dynreloc_st_type == STT_GNU_IFUNC)
|
| 9091 |
|
|
outrel.r_info = ELF32_R_INFO (0, R_ARM_IRELATIVE);
|
| 9092 |
|
|
else
|
| 9093 |
|
|
outrel.r_info = ELF32_R_INFO (0, R_ARM_RELATIVE);
|
| 9094 |
|
|
elf32_arm_add_dynreloc (output_bfd, info, srelgot, &outrel);
|
| 9095 |
|
|
}
|
| 9096 |
|
|
|
| 9097 |
|
|
local_got_offsets[r_symndx] |= 1;
|
| 9098 |
|
|
}
|
| 9099 |
|
|
|
| 9100 |
|
|
value = sgot->output_offset + off;
|
| 9101 |
|
|
}
|
| 9102 |
|
|
if (r_type != R_ARM_GOT32)
|
| 9103 |
|
|
value += sgot->output_section->vma;
|
| 9104 |
|
|
|
| 9105 |
|
|
return _bfd_final_link_relocate (howto, input_bfd, input_section,
|
| 9106 |
|
|
contents, rel->r_offset, value,
|
| 9107 |
|
|
rel->r_addend);
|
| 9108 |
|
|
|
| 9109 |
|
|
case R_ARM_TLS_LDO32:
|
| 9110 |
|
|
value = value - dtpoff_base (info);
|
| 9111 |
|
|
|
| 9112 |
|
|
return _bfd_final_link_relocate (howto, input_bfd, input_section,
|
| 9113 |
|
|
contents, rel->r_offset, value,
|
| 9114 |
|
|
rel->r_addend);
|
| 9115 |
|
|
|
| 9116 |
|
|
case R_ARM_TLS_LDM32:
|
| 9117 |
|
|
{
|
| 9118 |
|
|
bfd_vma off;
|
| 9119 |
|
|
|
| 9120 |
|
|
if (sgot == NULL)
|
| 9121 |
|
|
abort ();
|
| 9122 |
|
|
|
| 9123 |
|
|
off = globals->tls_ldm_got.offset;
|
| 9124 |
|
|
|
| 9125 |
|
|
if ((off & 1) != 0)
|
| 9126 |
|
|
off &= ~1;
|
| 9127 |
|
|
else
|
| 9128 |
|
|
{
|
| 9129 |
|
|
/* If we don't know the module number, create a relocation
|
| 9130 |
|
|
for it. */
|
| 9131 |
|
|
if (info->shared)
|
| 9132 |
|
|
{
|
| 9133 |
|
|
Elf_Internal_Rela outrel;
|
| 9134 |
|
|
|
| 9135 |
|
|
if (srelgot == NULL)
|
| 9136 |
|
|
abort ();
|
| 9137 |
|
|
|
| 9138 |
|
|
outrel.r_addend = 0;
|
| 9139 |
|
|
outrel.r_offset = (sgot->output_section->vma
|
| 9140 |
|
|
+ sgot->output_offset + off);
|
| 9141 |
|
|
outrel.r_info = ELF32_R_INFO (0, R_ARM_TLS_DTPMOD32);
|
| 9142 |
|
|
|
| 9143 |
|
|
if (globals->use_rel)
|
| 9144 |
|
|
bfd_put_32 (output_bfd, outrel.r_addend,
|
| 9145 |
|
|
sgot->contents + off);
|
| 9146 |
|
|
|
| 9147 |
|
|
elf32_arm_add_dynreloc (output_bfd, info, srelgot, &outrel);
|
| 9148 |
|
|
}
|
| 9149 |
|
|
else
|
| 9150 |
|
|
bfd_put_32 (output_bfd, 1, sgot->contents + off);
|
| 9151 |
|
|
|
| 9152 |
|
|
globals->tls_ldm_got.offset |= 1;
|
| 9153 |
|
|
}
|
| 9154 |
|
|
|
| 9155 |
|
|
value = sgot->output_section->vma + sgot->output_offset + off
|
| 9156 |
|
|
- (input_section->output_section->vma + input_section->output_offset + rel->r_offset);
|
| 9157 |
|
|
|
| 9158 |
|
|
return _bfd_final_link_relocate (howto, input_bfd, input_section,
|
| 9159 |
|
|
contents, rel->r_offset, value,
|
| 9160 |
|
|
rel->r_addend);
|
| 9161 |
|
|
}
|
| 9162 |
|
|
|
| 9163 |
|
|
case R_ARM_TLS_CALL:
|
| 9164 |
|
|
case R_ARM_THM_TLS_CALL:
|
| 9165 |
|
|
case R_ARM_TLS_GD32:
|
| 9166 |
|
|
case R_ARM_TLS_IE32:
|
| 9167 |
|
|
case R_ARM_TLS_GOTDESC:
|
| 9168 |
|
|
case R_ARM_TLS_DESCSEQ:
|
| 9169 |
|
|
case R_ARM_THM_TLS_DESCSEQ:
|
| 9170 |
|
|
{
|
| 9171 |
|
|
bfd_vma off, offplt;
|
| 9172 |
|
|
int indx = 0;
|
| 9173 |
|
|
char tls_type;
|
| 9174 |
|
|
|
| 9175 |
|
|
BFD_ASSERT (sgot != NULL);
|
| 9176 |
|
|
|
| 9177 |
|
|
if (h != NULL)
|
| 9178 |
|
|
{
|
| 9179 |
|
|
bfd_boolean dyn;
|
| 9180 |
|
|
dyn = globals->root.dynamic_sections_created;
|
| 9181 |
|
|
if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
|
| 9182 |
|
|
&& (!info->shared
|
| 9183 |
|
|
|| !SYMBOL_REFERENCES_LOCAL (info, h)))
|
| 9184 |
|
|
{
|
| 9185 |
|
|
*unresolved_reloc_p = FALSE;
|
| 9186 |
|
|
indx = h->dynindx;
|
| 9187 |
|
|
}
|
| 9188 |
|
|
off = h->got.offset;
|
| 9189 |
|
|
offplt = elf32_arm_hash_entry (h)->tlsdesc_got;
|
| 9190 |
|
|
tls_type = ((struct elf32_arm_link_hash_entry *) h)->tls_type;
|
| 9191 |
|
|
}
|
| 9192 |
|
|
else
|
| 9193 |
|
|
{
|
| 9194 |
|
|
BFD_ASSERT (local_got_offsets != NULL);
|
| 9195 |
|
|
off = local_got_offsets[r_symndx];
|
| 9196 |
|
|
offplt = local_tlsdesc_gotents[r_symndx];
|
| 9197 |
|
|
tls_type = elf32_arm_local_got_tls_type (input_bfd)[r_symndx];
|
| 9198 |
|
|
}
|
| 9199 |
|
|
|
| 9200 |
|
|
/* Linker relaxations happens from one of the
|
| 9201 |
|
|
R_ARM_{GOTDESC,CALL,DESCSEQ} relocations to IE or LE. */
|
| 9202 |
|
|
if (ELF32_R_TYPE(rel->r_info) != r_type)
|
| 9203 |
|
|
tls_type = GOT_TLS_IE;
|
| 9204 |
|
|
|
| 9205 |
|
|
BFD_ASSERT (tls_type != GOT_UNKNOWN);
|
| 9206 |
|
|
|
| 9207 |
|
|
if ((off & 1) != 0)
|
| 9208 |
|
|
off &= ~1;
|
| 9209 |
|
|
else
|
| 9210 |
|
|
{
|
| 9211 |
|
|
bfd_boolean need_relocs = FALSE;
|
| 9212 |
|
|
Elf_Internal_Rela outrel;
|
| 9213 |
|
|
int cur_off = off;
|
| 9214 |
|
|
|
| 9215 |
|
|
/* The GOT entries have not been initialized yet. Do it
|
| 9216 |
|
|
now, and emit any relocations. If both an IE GOT and a
|
| 9217 |
|
|
GD GOT are necessary, we emit the GD first. */
|
| 9218 |
|
|
|
| 9219 |
|
|
if ((info->shared || indx != 0)
|
| 9220 |
|
|
&& (h == NULL
|
| 9221 |
|
|
|| ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
|
| 9222 |
|
|
|| h->root.type != bfd_link_hash_undefweak))
|
| 9223 |
|
|
{
|
| 9224 |
|
|
need_relocs = TRUE;
|
| 9225 |
|
|
BFD_ASSERT (srelgot != NULL);
|
| 9226 |
|
|
}
|
| 9227 |
|
|
|
| 9228 |
|
|
if (tls_type & GOT_TLS_GDESC)
|
| 9229 |
|
|
{
|
| 9230 |
|
|
bfd_byte *loc;
|
| 9231 |
|
|
|
| 9232 |
|
|
/* We should have relaxed, unless this is an undefined
|
| 9233 |
|
|
weak symbol. */
|
| 9234 |
|
|
BFD_ASSERT ((h && (h->root.type == bfd_link_hash_undefweak))
|
| 9235 |
|
|
|| info->shared);
|
| 9236 |
|
|
BFD_ASSERT (globals->sgotplt_jump_table_size + offplt + 8
|
| 9237 |
|
|
<= globals->root.sgotplt->size);
|
| 9238 |
|
|
|
| 9239 |
|
|
outrel.r_addend = 0;
|
| 9240 |
|
|
outrel.r_offset = (globals->root.sgotplt->output_section->vma
|
| 9241 |
|
|
+ globals->root.sgotplt->output_offset
|
| 9242 |
|
|
+ offplt
|
| 9243 |
|
|
+ globals->sgotplt_jump_table_size);
|
| 9244 |
|
|
|
| 9245 |
|
|
outrel.r_info = ELF32_R_INFO (indx, R_ARM_TLS_DESC);
|
| 9246 |
|
|
sreloc = globals->root.srelplt;
|
| 9247 |
|
|
loc = sreloc->contents;
|
| 9248 |
|
|
loc += globals->next_tls_desc_index++ * RELOC_SIZE (globals);
|
| 9249 |
|
|
BFD_ASSERT (loc + RELOC_SIZE (globals)
|
| 9250 |
|
|
<= sreloc->contents + sreloc->size);
|
| 9251 |
|
|
|
| 9252 |
|
|
SWAP_RELOC_OUT (globals) (output_bfd, &outrel, loc);
|
| 9253 |
|
|
|
| 9254 |
|
|
/* For globals, the first word in the relocation gets
|
| 9255 |
|
|
the relocation index and the top bit set, or zero,
|
| 9256 |
|
|
if we're binding now. For locals, it gets the
|
| 9257 |
|
|
symbol's offset in the tls section. */
|
| 9258 |
|
|
bfd_put_32 (output_bfd,
|
| 9259 |
|
|
!h ? value - elf_hash_table (info)->tls_sec->vma
|
| 9260 |
|
|
: info->flags & DF_BIND_NOW ? 0
|
| 9261 |
|
|
: 0x80000000 | ELF32_R_SYM (outrel.r_info),
|
| 9262 |
|
|
globals->root.sgotplt->contents + offplt +
|
| 9263 |
|
|
globals->sgotplt_jump_table_size);
|
| 9264 |
|
|
|
| 9265 |
|
|
/* Second word in the relocation is always zero. */
|
| 9266 |
|
|
bfd_put_32 (output_bfd, 0,
|
| 9267 |
|
|
globals->root.sgotplt->contents + offplt +
|
| 9268 |
|
|
globals->sgotplt_jump_table_size + 4);
|
| 9269 |
|
|
}
|
| 9270 |
|
|
if (tls_type & GOT_TLS_GD)
|
| 9271 |
|
|
{
|
| 9272 |
|
|
if (need_relocs)
|
| 9273 |
|
|
{
|
| 9274 |
|
|
outrel.r_addend = 0;
|
| 9275 |
|
|
outrel.r_offset = (sgot->output_section->vma
|
| 9276 |
|
|
+ sgot->output_offset
|
| 9277 |
|
|
+ cur_off);
|
| 9278 |
|
|
outrel.r_info = ELF32_R_INFO (indx, R_ARM_TLS_DTPMOD32);
|
| 9279 |
|
|
|
| 9280 |
|
|
if (globals->use_rel)
|
| 9281 |
|
|
bfd_put_32 (output_bfd, outrel.r_addend,
|
| 9282 |
|
|
sgot->contents + cur_off);
|
| 9283 |
|
|
|
| 9284 |
|
|
elf32_arm_add_dynreloc (output_bfd, info, srelgot, &outrel);
|
| 9285 |
|
|
|
| 9286 |
|
|
if (indx == 0)
|
| 9287 |
|
|
bfd_put_32 (output_bfd, value - dtpoff_base (info),
|
| 9288 |
|
|
sgot->contents + cur_off + 4);
|
| 9289 |
|
|
else
|
| 9290 |
|
|
{
|
| 9291 |
|
|
outrel.r_addend = 0;
|
| 9292 |
|
|
outrel.r_info = ELF32_R_INFO (indx,
|
| 9293 |
|
|
R_ARM_TLS_DTPOFF32);
|
| 9294 |
|
|
outrel.r_offset += 4;
|
| 9295 |
|
|
|
| 9296 |
|
|
if (globals->use_rel)
|
| 9297 |
|
|
bfd_put_32 (output_bfd, outrel.r_addend,
|
| 9298 |
|
|
sgot->contents + cur_off + 4);
|
| 9299 |
|
|
|
| 9300 |
|
|
elf32_arm_add_dynreloc (output_bfd, info,
|
| 9301 |
|
|
srelgot, &outrel);
|
| 9302 |
|
|
}
|
| 9303 |
|
|
}
|
| 9304 |
|
|
else
|
| 9305 |
|
|
{
|
| 9306 |
|
|
/* If we are not emitting relocations for a
|
| 9307 |
|
|
general dynamic reference, then we must be in a
|
| 9308 |
|
|
static link or an executable link with the
|
| 9309 |
|
|
symbol binding locally. Mark it as belonging
|
| 9310 |
|
|
to module 1, the executable. */
|
| 9311 |
|
|
bfd_put_32 (output_bfd, 1,
|
| 9312 |
|
|
sgot->contents + cur_off);
|
| 9313 |
|
|
bfd_put_32 (output_bfd, value - dtpoff_base (info),
|
| 9314 |
|
|
sgot->contents + cur_off + 4);
|
| 9315 |
|
|
}
|
| 9316 |
|
|
|
| 9317 |
|
|
cur_off += 8;
|
| 9318 |
|
|
}
|
| 9319 |
|
|
|
| 9320 |
|
|
if (tls_type & GOT_TLS_IE)
|
| 9321 |
|
|
{
|
| 9322 |
|
|
if (need_relocs)
|
| 9323 |
|
|
{
|
| 9324 |
|
|
if (indx == 0)
|
| 9325 |
|
|
outrel.r_addend = value - dtpoff_base (info);
|
| 9326 |
|
|
else
|
| 9327 |
|
|
outrel.r_addend = 0;
|
| 9328 |
|
|
outrel.r_offset = (sgot->output_section->vma
|
| 9329 |
|
|
+ sgot->output_offset
|
| 9330 |
|
|
+ cur_off);
|
| 9331 |
|
|
outrel.r_info = ELF32_R_INFO (indx, R_ARM_TLS_TPOFF32);
|
| 9332 |
|
|
|
| 9333 |
|
|
if (globals->use_rel)
|
| 9334 |
|
|
bfd_put_32 (output_bfd, outrel.r_addend,
|
| 9335 |
|
|
sgot->contents + cur_off);
|
| 9336 |
|
|
|
| 9337 |
|
|
elf32_arm_add_dynreloc (output_bfd, info, srelgot, &outrel);
|
| 9338 |
|
|
}
|
| 9339 |
|
|
else
|
| 9340 |
|
|
bfd_put_32 (output_bfd, tpoff (info, value),
|
| 9341 |
|
|
sgot->contents + cur_off);
|
| 9342 |
|
|
cur_off += 4;
|
| 9343 |
|
|
}
|
| 9344 |
|
|
|
| 9345 |
|
|
if (h != NULL)
|
| 9346 |
|
|
h->got.offset |= 1;
|
| 9347 |
|
|
else
|
| 9348 |
|
|
local_got_offsets[r_symndx] |= 1;
|
| 9349 |
|
|
}
|
| 9350 |
|
|
|
| 9351 |
|
|
if ((tls_type & GOT_TLS_GD) && r_type != R_ARM_TLS_GD32)
|
| 9352 |
|
|
off += 8;
|
| 9353 |
|
|
else if (tls_type & GOT_TLS_GDESC)
|
| 9354 |
|
|
off = offplt;
|
| 9355 |
|
|
|
| 9356 |
|
|
if (ELF32_R_TYPE(rel->r_info) == R_ARM_TLS_CALL
|
| 9357 |
|
|
|| ELF32_R_TYPE(rel->r_info) == R_ARM_THM_TLS_CALL)
|
| 9358 |
|
|
{
|
| 9359 |
|
|
bfd_signed_vma offset;
|
| 9360 |
|
|
/* TLS stubs are arm mode. The original symbol is a
|
| 9361 |
|
|
data object, so branch_type is bogus. */
|
| 9362 |
|
|
branch_type = ST_BRANCH_TO_ARM;
|
| 9363 |
|
|
enum elf32_arm_stub_type stub_type
|
| 9364 |
|
|
= arm_type_of_stub (info, input_section, rel,
|
| 9365 |
|
|
st_type, &branch_type,
|
| 9366 |
|
|
(struct elf32_arm_link_hash_entry *)h,
|
| 9367 |
|
|
globals->tls_trampoline, globals->root.splt,
|
| 9368 |
|
|
input_bfd, sym_name);
|
| 9369 |
|
|
|
| 9370 |
|
|
if (stub_type != arm_stub_none)
|
| 9371 |
|
|
{
|
| 9372 |
|
|
struct elf32_arm_stub_hash_entry *stub_entry
|
| 9373 |
|
|
= elf32_arm_get_stub_entry
|
| 9374 |
|
|
(input_section, globals->root.splt, 0, rel,
|
| 9375 |
|
|
globals, stub_type);
|
| 9376 |
|
|
offset = (stub_entry->stub_offset
|
| 9377 |
|
|
+ stub_entry->stub_sec->output_offset
|
| 9378 |
|
|
+ stub_entry->stub_sec->output_section->vma);
|
| 9379 |
|
|
}
|
| 9380 |
|
|
else
|
| 9381 |
|
|
offset = (globals->root.splt->output_section->vma
|
| 9382 |
|
|
+ globals->root.splt->output_offset
|
| 9383 |
|
|
+ globals->tls_trampoline);
|
| 9384 |
|
|
|
| 9385 |
|
|
if (ELF32_R_TYPE(rel->r_info) == R_ARM_TLS_CALL)
|
| 9386 |
|
|
{
|
| 9387 |
|
|
unsigned long inst;
|
| 9388 |
|
|
|
| 9389 |
|
|
offset -= (input_section->output_section->vma +
|
| 9390 |
|
|
input_section->output_offset + rel->r_offset + 8);
|
| 9391 |
|
|
|
| 9392 |
|
|
inst = offset >> 2;
|
| 9393 |
|
|
inst &= 0x00ffffff;
|
| 9394 |
|
|
value = inst | (globals->use_blx ? 0xfa000000 : 0xeb000000);
|
| 9395 |
|
|
}
|
| 9396 |
|
|
else
|
| 9397 |
|
|
{
|
| 9398 |
|
|
/* Thumb blx encodes the offset in a complicated
|
| 9399 |
|
|
fashion. */
|
| 9400 |
|
|
unsigned upper_insn, lower_insn;
|
| 9401 |
|
|
unsigned neg;
|
| 9402 |
|
|
|
| 9403 |
|
|
offset -= (input_section->output_section->vma +
|
| 9404 |
|
|
input_section->output_offset
|
| 9405 |
|
|
+ rel->r_offset + 4);
|
| 9406 |
|
|
|
| 9407 |
|
|
if (stub_type != arm_stub_none
|
| 9408 |
|
|
&& arm_stub_is_thumb (stub_type))
|
| 9409 |
|
|
{
|
| 9410 |
|
|
lower_insn = 0xd000;
|
| 9411 |
|
|
}
|
| 9412 |
|
|
else
|
| 9413 |
|
|
{
|
| 9414 |
|
|
lower_insn = 0xc000;
|
| 9415 |
|
|
/* Round up the offset to a word boundary */
|
| 9416 |
|
|
offset = (offset + 2) & ~2;
|
| 9417 |
|
|
}
|
| 9418 |
|
|
|
| 9419 |
|
|
neg = offset < 0;
|
| 9420 |
|
|
upper_insn = (0xf000
|
| 9421 |
|
|
| ((offset >> 12) & 0x3ff)
|
| 9422 |
|
|
| (neg << 10));
|
| 9423 |
|
|
lower_insn |= (((!((offset >> 23) & 1)) ^ neg) << 13)
|
| 9424 |
|
|
| (((!((offset >> 22) & 1)) ^ neg) << 11)
|
| 9425 |
|
|
| ((offset >> 1) & 0x7ff);
|
| 9426 |
|
|
bfd_put_16 (input_bfd, upper_insn, hit_data);
|
| 9427 |
|
|
bfd_put_16 (input_bfd, lower_insn, hit_data + 2);
|
| 9428 |
|
|
return bfd_reloc_ok;
|
| 9429 |
|
|
}
|
| 9430 |
|
|
}
|
| 9431 |
|
|
/* These relocations needs special care, as besides the fact
|
| 9432 |
|
|
they point somewhere in .gotplt, the addend must be
|
| 9433 |
|
|
adjusted accordingly depending on the type of instruction
|
| 9434 |
|
|
we refer to */
|
| 9435 |
|
|
else if ((r_type == R_ARM_TLS_GOTDESC) && (tls_type & GOT_TLS_GDESC))
|
| 9436 |
|
|
{
|
| 9437 |
|
|
unsigned long data, insn;
|
| 9438 |
|
|
unsigned thumb;
|
| 9439 |
|
|
|
| 9440 |
|
|
data = bfd_get_32 (input_bfd, hit_data);
|
| 9441 |
|
|
thumb = data & 1;
|
| 9442 |
|
|
data &= ~1u;
|
| 9443 |
|
|
|
| 9444 |
|
|
if (thumb)
|
| 9445 |
|
|
{
|
| 9446 |
|
|
insn = bfd_get_16 (input_bfd, contents + rel->r_offset - data);
|
| 9447 |
|
|
if ((insn & 0xf000) == 0xf000 || (insn & 0xf800) == 0xe800)
|
| 9448 |
|
|
insn = (insn << 16)
|
| 9449 |
|
|
| bfd_get_16 (input_bfd,
|
| 9450 |
|
|
contents + rel->r_offset - data + 2);
|
| 9451 |
|
|
if ((insn & 0xf800c000) == 0xf000c000)
|
| 9452 |
|
|
/* bl/blx */
|
| 9453 |
|
|
value = -6;
|
| 9454 |
|
|
else if ((insn & 0xffffff00) == 0x4400)
|
| 9455 |
|
|
/* add */
|
| 9456 |
|
|
value = -5;
|
| 9457 |
|
|
else
|
| 9458 |
|
|
{
|
| 9459 |
|
|
(*_bfd_error_handler)
|
| 9460 |
|
|
(_("%B(%A+0x%lx):unexpected Thumb instruction '0x%x' referenced by TLS_GOTDESC"),
|
| 9461 |
|
|
input_bfd, input_section,
|
| 9462 |
|
|
(unsigned long)rel->r_offset, insn);
|
| 9463 |
|
|
return bfd_reloc_notsupported;
|
| 9464 |
|
|
}
|
| 9465 |
|
|
}
|
| 9466 |
|
|
else
|
| 9467 |
|
|
{
|
| 9468 |
|
|
insn = bfd_get_32 (input_bfd, contents + rel->r_offset - data);
|
| 9469 |
|
|
|
| 9470 |
|
|
switch (insn >> 24)
|
| 9471 |
|
|
{
|
| 9472 |
|
|
case 0xeb: /* bl */
|
| 9473 |
|
|
case 0xfa: /* blx */
|
| 9474 |
|
|
value = -4;
|
| 9475 |
|
|
break;
|
| 9476 |
|
|
|
| 9477 |
|
|
case 0xe0: /* add */
|
| 9478 |
|
|
value = -8;
|
| 9479 |
|
|
break;
|
| 9480 |
|
|
|
| 9481 |
|
|
default:
|
| 9482 |
|
|
(*_bfd_error_handler)
|
| 9483 |
|
|
(_("%B(%A+0x%lx):unexpected ARM instruction '0x%x' referenced by TLS_GOTDESC"),
|
| 9484 |
|
|
input_bfd, input_section,
|
| 9485 |
|
|
(unsigned long)rel->r_offset, insn);
|
| 9486 |
|
|
return bfd_reloc_notsupported;
|
| 9487 |
|
|
}
|
| 9488 |
|
|
}
|
| 9489 |
|
|
|
| 9490 |
|
|
value += ((globals->root.sgotplt->output_section->vma
|
| 9491 |
|
|
+ globals->root.sgotplt->output_offset + off)
|
| 9492 |
|
|
- (input_section->output_section->vma
|
| 9493 |
|
|
+ input_section->output_offset
|
| 9494 |
|
|
+ rel->r_offset)
|
| 9495 |
|
|
+ globals->sgotplt_jump_table_size);
|
| 9496 |
|
|
}
|
| 9497 |
|
|
else
|
| 9498 |
|
|
value = ((globals->root.sgot->output_section->vma
|
| 9499 |
|
|
+ globals->root.sgot->output_offset + off)
|
| 9500 |
|
|
- (input_section->output_section->vma
|
| 9501 |
|
|
+ input_section->output_offset + rel->r_offset));
|
| 9502 |
|
|
|
| 9503 |
|
|
return _bfd_final_link_relocate (howto, input_bfd, input_section,
|
| 9504 |
|
|
contents, rel->r_offset, value,
|
| 9505 |
|
|
rel->r_addend);
|
| 9506 |
|
|
}
|
| 9507 |
|
|
|
| 9508 |
|
|
case R_ARM_TLS_LE32:
|
| 9509 |
161 |
khays |
if (info->shared && !info->pie)
|
| 9510 |
14 |
khays |
{
|
| 9511 |
|
|
(*_bfd_error_handler)
|
| 9512 |
|
|
(_("%B(%A+0x%lx): R_ARM_TLS_LE32 relocation not permitted in shared object"),
|
| 9513 |
|
|
input_bfd, input_section,
|
| 9514 |
|
|
(long) rel->r_offset, howto->name);
|
| 9515 |
|
|
return (bfd_reloc_status_type) FALSE;
|
| 9516 |
|
|
}
|
| 9517 |
|
|
else
|
| 9518 |
|
|
value = tpoff (info, value);
|
| 9519 |
|
|
|
| 9520 |
|
|
return _bfd_final_link_relocate (howto, input_bfd, input_section,
|
| 9521 |
|
|
contents, rel->r_offset, value,
|
| 9522 |
|
|
rel->r_addend);
|
| 9523 |
|
|
|
| 9524 |
|
|
case R_ARM_V4BX:
|
| 9525 |
|
|
if (globals->fix_v4bx)
|
| 9526 |
|
|
{
|
| 9527 |
|
|
bfd_vma insn = bfd_get_32 (input_bfd, hit_data);
|
| 9528 |
|
|
|
| 9529 |
|
|
/* Ensure that we have a BX instruction. */
|
| 9530 |
|
|
BFD_ASSERT ((insn & 0x0ffffff0) == 0x012fff10);
|
| 9531 |
|
|
|
| 9532 |
|
|
if (globals->fix_v4bx == 2 && (insn & 0xf) != 0xf)
|
| 9533 |
|
|
{
|
| 9534 |
|
|
/* Branch to veneer. */
|
| 9535 |
|
|
bfd_vma glue_addr;
|
| 9536 |
|
|
glue_addr = elf32_arm_bx_glue (info, insn & 0xf);
|
| 9537 |
|
|
glue_addr -= input_section->output_section->vma
|
| 9538 |
|
|
+ input_section->output_offset
|
| 9539 |
|
|
+ rel->r_offset + 8;
|
| 9540 |
|
|
insn = (insn & 0xf0000000) | 0x0a000000
|
| 9541 |
|
|
| ((glue_addr >> 2) & 0x00ffffff);
|
| 9542 |
|
|
}
|
| 9543 |
|
|
else
|
| 9544 |
|
|
{
|
| 9545 |
|
|
/* Preserve Rm (lowest four bits) and the condition code
|
| 9546 |
|
|
(highest four bits). Other bits encode MOV PC,Rm. */
|
| 9547 |
|
|
insn = (insn & 0xf000000f) | 0x01a0f000;
|
| 9548 |
|
|
}
|
| 9549 |
|
|
|
| 9550 |
|
|
bfd_put_32 (input_bfd, insn, hit_data);
|
| 9551 |
|
|
}
|
| 9552 |
|
|
return bfd_reloc_ok;
|
| 9553 |
|
|
|
| 9554 |
|
|
case R_ARM_MOVW_ABS_NC:
|
| 9555 |
|
|
case R_ARM_MOVT_ABS:
|
| 9556 |
|
|
case R_ARM_MOVW_PREL_NC:
|
| 9557 |
|
|
case R_ARM_MOVT_PREL:
|
| 9558 |
|
|
/* Until we properly support segment-base-relative addressing then
|
| 9559 |
|
|
we assume the segment base to be zero, as for the group relocations.
|
| 9560 |
|
|
Thus R_ARM_MOVW_BREL_NC has the same semantics as R_ARM_MOVW_ABS_NC
|
| 9561 |
|
|
and R_ARM_MOVT_BREL has the same semantics as R_ARM_MOVT_ABS. */
|
| 9562 |
|
|
case R_ARM_MOVW_BREL_NC:
|
| 9563 |
|
|
case R_ARM_MOVW_BREL:
|
| 9564 |
|
|
case R_ARM_MOVT_BREL:
|
| 9565 |
|
|
{
|
| 9566 |
|
|
bfd_vma insn = bfd_get_32 (input_bfd, hit_data);
|
| 9567 |
|
|
|
| 9568 |
|
|
if (globals->use_rel)
|
| 9569 |
|
|
{
|
| 9570 |
|
|
addend = ((insn >> 4) & 0xf000) | (insn & 0xfff);
|
| 9571 |
|
|
signed_addend = (addend ^ 0x8000) - 0x8000;
|
| 9572 |
|
|
}
|
| 9573 |
|
|
|
| 9574 |
|
|
value += signed_addend;
|
| 9575 |
|
|
|
| 9576 |
|
|
if (r_type == R_ARM_MOVW_PREL_NC || r_type == R_ARM_MOVT_PREL)
|
| 9577 |
|
|
value -= (input_section->output_section->vma
|
| 9578 |
|
|
+ input_section->output_offset + rel->r_offset);
|
| 9579 |
|
|
|
| 9580 |
|
|
if (r_type == R_ARM_MOVW_BREL && value >= 0x10000)
|
| 9581 |
|
|
return bfd_reloc_overflow;
|
| 9582 |
|
|
|
| 9583 |
|
|
if (branch_type == ST_BRANCH_TO_THUMB)
|
| 9584 |
|
|
value |= 1;
|
| 9585 |
|
|
|
| 9586 |
|
|
if (r_type == R_ARM_MOVT_ABS || r_type == R_ARM_MOVT_PREL
|
| 9587 |
|
|
|| r_type == R_ARM_MOVT_BREL)
|
| 9588 |
|
|
value >>= 16;
|
| 9589 |
|
|
|
| 9590 |
|
|
insn &= 0xfff0f000;
|
| 9591 |
|
|
insn |= value & 0xfff;
|
| 9592 |
|
|
insn |= (value & 0xf000) << 4;
|
| 9593 |
|
|
bfd_put_32 (input_bfd, insn, hit_data);
|
| 9594 |
|
|
}
|
| 9595 |
|
|
return bfd_reloc_ok;
|
| 9596 |
|
|
|
| 9597 |
|
|
case R_ARM_THM_MOVW_ABS_NC:
|
| 9598 |
|
|
case R_ARM_THM_MOVT_ABS:
|
| 9599 |
|
|
case R_ARM_THM_MOVW_PREL_NC:
|
| 9600 |
|
|
case R_ARM_THM_MOVT_PREL:
|
| 9601 |
|
|
/* Until we properly support segment-base-relative addressing then
|
| 9602 |
|
|
we assume the segment base to be zero, as for the above relocations.
|
| 9603 |
|
|
Thus R_ARM_THM_MOVW_BREL_NC has the same semantics as
|
| 9604 |
|
|
R_ARM_THM_MOVW_ABS_NC and R_ARM_THM_MOVT_BREL has the same semantics
|
| 9605 |
|
|
as R_ARM_THM_MOVT_ABS. */
|
| 9606 |
|
|
case R_ARM_THM_MOVW_BREL_NC:
|
| 9607 |
|
|
case R_ARM_THM_MOVW_BREL:
|
| 9608 |
|
|
case R_ARM_THM_MOVT_BREL:
|
| 9609 |
|
|
{
|
| 9610 |
|
|
bfd_vma insn;
|
| 9611 |
|
|
|
| 9612 |
|
|
insn = bfd_get_16 (input_bfd, hit_data) << 16;
|
| 9613 |
|
|
insn |= bfd_get_16 (input_bfd, hit_data + 2);
|
| 9614 |
|
|
|
| 9615 |
|
|
if (globals->use_rel)
|
| 9616 |
|
|
{
|
| 9617 |
|
|
addend = ((insn >> 4) & 0xf000)
|
| 9618 |
|
|
| ((insn >> 15) & 0x0800)
|
| 9619 |
|
|
| ((insn >> 4) & 0x0700)
|
| 9620 |
|
|
| (insn & 0x00ff);
|
| 9621 |
|
|
signed_addend = (addend ^ 0x8000) - 0x8000;
|
| 9622 |
|
|
}
|
| 9623 |
|
|
|
| 9624 |
|
|
value += signed_addend;
|
| 9625 |
|
|
|
| 9626 |
|
|
if (r_type == R_ARM_THM_MOVW_PREL_NC || r_type == R_ARM_THM_MOVT_PREL)
|
| 9627 |
|
|
value -= (input_section->output_section->vma
|
| 9628 |
|
|
+ input_section->output_offset + rel->r_offset);
|
| 9629 |
|
|
|
| 9630 |
|
|
if (r_type == R_ARM_THM_MOVW_BREL && value >= 0x10000)
|
| 9631 |
|
|
return bfd_reloc_overflow;
|
| 9632 |
|
|
|
| 9633 |
|
|
if (branch_type == ST_BRANCH_TO_THUMB)
|
| 9634 |
|
|
value |= 1;
|
| 9635 |
|
|
|
| 9636 |
|
|
if (r_type == R_ARM_THM_MOVT_ABS || r_type == R_ARM_THM_MOVT_PREL
|
| 9637 |
|
|
|| r_type == R_ARM_THM_MOVT_BREL)
|
| 9638 |
|
|
value >>= 16;
|
| 9639 |
|
|
|
| 9640 |
|
|
insn &= 0xfbf08f00;
|
| 9641 |
|
|
insn |= (value & 0xf000) << 4;
|
| 9642 |
|
|
insn |= (value & 0x0800) << 15;
|
| 9643 |
|
|
insn |= (value & 0x0700) << 4;
|
| 9644 |
|
|
insn |= (value & 0x00ff);
|
| 9645 |
|
|
|
| 9646 |
|
|
bfd_put_16 (input_bfd, insn >> 16, hit_data);
|
| 9647 |
|
|
bfd_put_16 (input_bfd, insn & 0xffff, hit_data + 2);
|
| 9648 |
|
|
}
|
| 9649 |
|
|
return bfd_reloc_ok;
|
| 9650 |
|
|
|
| 9651 |
|
|
case R_ARM_ALU_PC_G0_NC:
|
| 9652 |
|
|
case R_ARM_ALU_PC_G1_NC:
|
| 9653 |
|
|
case R_ARM_ALU_PC_G0:
|
| 9654 |
|
|
case R_ARM_ALU_PC_G1:
|
| 9655 |
|
|
case R_ARM_ALU_PC_G2:
|
| 9656 |
|
|
case R_ARM_ALU_SB_G0_NC:
|
| 9657 |
|
|
case R_ARM_ALU_SB_G1_NC:
|
| 9658 |
|
|
case R_ARM_ALU_SB_G0:
|
| 9659 |
|
|
case R_ARM_ALU_SB_G1:
|
| 9660 |
|
|
case R_ARM_ALU_SB_G2:
|
| 9661 |
|
|
{
|
| 9662 |
|
|
bfd_vma insn = bfd_get_32 (input_bfd, hit_data);
|
| 9663 |
|
|
bfd_vma pc = input_section->output_section->vma
|
| 9664 |
|
|
+ input_section->output_offset + rel->r_offset;
|
| 9665 |
|
|
/* sb should be the origin of the *segment* containing the symbol.
|
| 9666 |
|
|
It is not clear how to obtain this OS-dependent value, so we
|
| 9667 |
|
|
make an arbitrary choice of zero. */
|
| 9668 |
|
|
bfd_vma sb = 0;
|
| 9669 |
|
|
bfd_vma residual;
|
| 9670 |
|
|
bfd_vma g_n;
|
| 9671 |
|
|
bfd_signed_vma signed_value;
|
| 9672 |
|
|
int group = 0;
|
| 9673 |
|
|
|
| 9674 |
|
|
/* Determine which group of bits to select. */
|
| 9675 |
|
|
switch (r_type)
|
| 9676 |
|
|
{
|
| 9677 |
|
|
case R_ARM_ALU_PC_G0_NC:
|
| 9678 |
|
|
case R_ARM_ALU_PC_G0:
|
| 9679 |
|
|
case R_ARM_ALU_SB_G0_NC:
|
| 9680 |
|
|
case R_ARM_ALU_SB_G0:
|
| 9681 |
|
|
group = 0;
|
| 9682 |
|
|
break;
|
| 9683 |
|
|
|
| 9684 |
|
|
case R_ARM_ALU_PC_G1_NC:
|
| 9685 |
|
|
case R_ARM_ALU_PC_G1:
|
| 9686 |
|
|
case R_ARM_ALU_SB_G1_NC:
|
| 9687 |
|
|
case R_ARM_ALU_SB_G1:
|
| 9688 |
|
|
group = 1;
|
| 9689 |
|
|
break;
|
| 9690 |
|
|
|
| 9691 |
|
|
case R_ARM_ALU_PC_G2:
|
| 9692 |
|
|
case R_ARM_ALU_SB_G2:
|
| 9693 |
|
|
group = 2;
|
| 9694 |
|
|
break;
|
| 9695 |
|
|
|
| 9696 |
|
|
default:
|
| 9697 |
|
|
abort ();
|
| 9698 |
|
|
}
|
| 9699 |
|
|
|
| 9700 |
|
|
/* If REL, extract the addend from the insn. If RELA, it will
|
| 9701 |
|
|
have already been fetched for us. */
|
| 9702 |
|
|
if (globals->use_rel)
|
| 9703 |
|
|
{
|
| 9704 |
|
|
int negative;
|
| 9705 |
|
|
bfd_vma constant = insn & 0xff;
|
| 9706 |
|
|
bfd_vma rotation = (insn & 0xf00) >> 8;
|
| 9707 |
|
|
|
| 9708 |
|
|
if (rotation == 0)
|
| 9709 |
|
|
signed_addend = constant;
|
| 9710 |
|
|
else
|
| 9711 |
|
|
{
|
| 9712 |
|
|
/* Compensate for the fact that in the instruction, the
|
| 9713 |
|
|
rotation is stored in multiples of 2 bits. */
|
| 9714 |
|
|
rotation *= 2;
|
| 9715 |
|
|
|
| 9716 |
|
|
/* Rotate "constant" right by "rotation" bits. */
|
| 9717 |
|
|
signed_addend = (constant >> rotation) |
|
| 9718 |
|
|
(constant << (8 * sizeof (bfd_vma) - rotation));
|
| 9719 |
|
|
}
|
| 9720 |
|
|
|
| 9721 |
|
|
/* Determine if the instruction is an ADD or a SUB.
|
| 9722 |
|
|
(For REL, this determines the sign of the addend.) */
|
| 9723 |
|
|
negative = identify_add_or_sub (insn);
|
| 9724 |
|
|
if (negative == 0)
|
| 9725 |
|
|
{
|
| 9726 |
|
|
(*_bfd_error_handler)
|
| 9727 |
|
|
(_("%B(%A+0x%lx): Only ADD or SUB instructions are allowed for ALU group relocations"),
|
| 9728 |
|
|
input_bfd, input_section,
|
| 9729 |
|
|
(long) rel->r_offset, howto->name);
|
| 9730 |
|
|
return bfd_reloc_overflow;
|
| 9731 |
|
|
}
|
| 9732 |
|
|
|
| 9733 |
|
|
signed_addend *= negative;
|
| 9734 |
|
|
}
|
| 9735 |
|
|
|
| 9736 |
|
|
/* Compute the value (X) to go in the place. */
|
| 9737 |
|
|
if (r_type == R_ARM_ALU_PC_G0_NC
|
| 9738 |
|
|
|| r_type == R_ARM_ALU_PC_G1_NC
|
| 9739 |
|
|
|| r_type == R_ARM_ALU_PC_G0
|
| 9740 |
|
|
|| r_type == R_ARM_ALU_PC_G1
|
| 9741 |
|
|
|| r_type == R_ARM_ALU_PC_G2)
|
| 9742 |
|
|
/* PC relative. */
|
| 9743 |
|
|
signed_value = value - pc + signed_addend;
|
| 9744 |
|
|
else
|
| 9745 |
|
|
/* Section base relative. */
|
| 9746 |
|
|
signed_value = value - sb + signed_addend;
|
| 9747 |
|
|
|
| 9748 |
|
|
/* If the target symbol is a Thumb function, then set the
|
| 9749 |
|
|
Thumb bit in the address. */
|
| 9750 |
|
|
if (branch_type == ST_BRANCH_TO_THUMB)
|
| 9751 |
|
|
signed_value |= 1;
|
| 9752 |
|
|
|
| 9753 |
|
|
/* Calculate the value of the relevant G_n, in encoded
|
| 9754 |
|
|
constant-with-rotation format. */
|
| 9755 |
|
|
g_n = calculate_group_reloc_mask (abs (signed_value), group,
|
| 9756 |
|
|
&residual);
|
| 9757 |
|
|
|
| 9758 |
|
|
/* Check for overflow if required. */
|
| 9759 |
|
|
if ((r_type == R_ARM_ALU_PC_G0
|
| 9760 |
|
|
|| r_type == R_ARM_ALU_PC_G1
|
| 9761 |
|
|
|| r_type == R_ARM_ALU_PC_G2
|
| 9762 |
|
|
|| r_type == R_ARM_ALU_SB_G0
|
| 9763 |
|
|
|| r_type == R_ARM_ALU_SB_G1
|
| 9764 |
|
|
|| r_type == R_ARM_ALU_SB_G2) && residual != 0)
|
| 9765 |
|
|
{
|
| 9766 |
|
|
(*_bfd_error_handler)
|
| 9767 |
|
|
(_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
|
| 9768 |
|
|
input_bfd, input_section,
|
| 9769 |
|
|
(long) rel->r_offset, abs (signed_value), howto->name);
|
| 9770 |
|
|
return bfd_reloc_overflow;
|
| 9771 |
|
|
}
|
| 9772 |
|
|
|
| 9773 |
|
|
/* Mask out the value and the ADD/SUB part of the opcode; take care
|
| 9774 |
|
|
not to destroy the S bit. */
|
| 9775 |
|
|
insn &= 0xff1ff000;
|
| 9776 |
|
|
|
| 9777 |
|
|
/* Set the opcode according to whether the value to go in the
|
| 9778 |
|
|
place is negative. */
|
| 9779 |
|
|
if (signed_value < 0)
|
| 9780 |
|
|
insn |= 1 << 22;
|
| 9781 |
|
|
else
|
| 9782 |
|
|
insn |= 1 << 23;
|
| 9783 |
|
|
|
| 9784 |
|
|
/* Encode the offset. */
|
| 9785 |
|
|
insn |= g_n;
|
| 9786 |
|
|
|
| 9787 |
|
|
bfd_put_32 (input_bfd, insn, hit_data);
|
| 9788 |
|
|
}
|
| 9789 |
|
|
return bfd_reloc_ok;
|
| 9790 |
|
|
|
| 9791 |
|
|
case R_ARM_LDR_PC_G0:
|
| 9792 |
|
|
case R_ARM_LDR_PC_G1:
|
| 9793 |
|
|
case R_ARM_LDR_PC_G2:
|
| 9794 |
|
|
case R_ARM_LDR_SB_G0:
|
| 9795 |
|
|
case R_ARM_LDR_SB_G1:
|
| 9796 |
|
|
case R_ARM_LDR_SB_G2:
|
| 9797 |
|
|
{
|
| 9798 |
|
|
bfd_vma insn = bfd_get_32 (input_bfd, hit_data);
|
| 9799 |
|
|
bfd_vma pc = input_section->output_section->vma
|
| 9800 |
|
|
+ input_section->output_offset + rel->r_offset;
|
| 9801 |
|
|
bfd_vma sb = 0; /* See note above. */
|
| 9802 |
|
|
bfd_vma residual;
|
| 9803 |
|
|
bfd_signed_vma signed_value;
|
| 9804 |
|
|
int group = 0;
|
| 9805 |
|
|
|
| 9806 |
|
|
/* Determine which groups of bits to calculate. */
|
| 9807 |
|
|
switch (r_type)
|
| 9808 |
|
|
{
|
| 9809 |
|
|
case R_ARM_LDR_PC_G0:
|
| 9810 |
|
|
case R_ARM_LDR_SB_G0:
|
| 9811 |
|
|
group = 0;
|
| 9812 |
|
|
break;
|
| 9813 |
|
|
|
| 9814 |
|
|
case R_ARM_LDR_PC_G1:
|
| 9815 |
|
|
case R_ARM_LDR_SB_G1:
|
| 9816 |
|
|
group = 1;
|
| 9817 |
|
|
break;
|
| 9818 |
|
|
|
| 9819 |
|
|
case R_ARM_LDR_PC_G2:
|
| 9820 |
|
|
case R_ARM_LDR_SB_G2:
|
| 9821 |
|
|
group = 2;
|
| 9822 |
|
|
break;
|
| 9823 |
|
|
|
| 9824 |
|
|
default:
|
| 9825 |
|
|
abort ();
|
| 9826 |
|
|
}
|
| 9827 |
|
|
|
| 9828 |
|
|
/* If REL, extract the addend from the insn. If RELA, it will
|
| 9829 |
|
|
have already been fetched for us. */
|
| 9830 |
|
|
if (globals->use_rel)
|
| 9831 |
|
|
{
|
| 9832 |
|
|
int negative = (insn & (1 << 23)) ? 1 : -1;
|
| 9833 |
|
|
signed_addend = negative * (insn & 0xfff);
|
| 9834 |
|
|
}
|
| 9835 |
|
|
|
| 9836 |
|
|
/* Compute the value (X) to go in the place. */
|
| 9837 |
|
|
if (r_type == R_ARM_LDR_PC_G0
|
| 9838 |
|
|
|| r_type == R_ARM_LDR_PC_G1
|
| 9839 |
|
|
|| r_type == R_ARM_LDR_PC_G2)
|
| 9840 |
|
|
/* PC relative. */
|
| 9841 |
|
|
signed_value = value - pc + signed_addend;
|
| 9842 |
|
|
else
|
| 9843 |
|
|
/* Section base relative. */
|
| 9844 |
|
|
signed_value = value - sb + signed_addend;
|
| 9845 |
|
|
|
| 9846 |
|
|
/* Calculate the value of the relevant G_{n-1} to obtain
|
| 9847 |
|
|
the residual at that stage. */
|
| 9848 |
|
|
calculate_group_reloc_mask (abs (signed_value), group - 1, &residual);
|
| 9849 |
|
|
|
| 9850 |
|
|
/* Check for overflow. */
|
| 9851 |
|
|
if (residual >= 0x1000)
|
| 9852 |
|
|
{
|
| 9853 |
|
|
(*_bfd_error_handler)
|
| 9854 |
|
|
(_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
|
| 9855 |
|
|
input_bfd, input_section,
|
| 9856 |
|
|
(long) rel->r_offset, abs (signed_value), howto->name);
|
| 9857 |
|
|
return bfd_reloc_overflow;
|
| 9858 |
|
|
}
|
| 9859 |
|
|
|
| 9860 |
|
|
/* Mask out the value and U bit. */
|
| 9861 |
|
|
insn &= 0xff7ff000;
|
| 9862 |
|
|
|
| 9863 |
|
|
/* Set the U bit if the value to go in the place is non-negative. */
|
| 9864 |
|
|
if (signed_value >= 0)
|
| 9865 |
|
|
insn |= 1 << 23;
|
| 9866 |
|
|
|
| 9867 |
|
|
/* Encode the offset. */
|
| 9868 |
|
|
insn |= residual;
|
| 9869 |
|
|
|
| 9870 |
|
|
bfd_put_32 (input_bfd, insn, hit_data);
|
| 9871 |
|
|
}
|
| 9872 |
|
|
return bfd_reloc_ok;
|
| 9873 |
|
|
|
| 9874 |
|
|
case R_ARM_LDRS_PC_G0:
|
| 9875 |
|
|
case R_ARM_LDRS_PC_G1:
|
| 9876 |
|
|
case R_ARM_LDRS_PC_G2:
|
| 9877 |
|
|
case R_ARM_LDRS_SB_G0:
|
| 9878 |
|
|
case R_ARM_LDRS_SB_G1:
|
| 9879 |
|
|
case R_ARM_LDRS_SB_G2:
|
| 9880 |
|
|
{
|
| 9881 |
|
|
bfd_vma insn = bfd_get_32 (input_bfd, hit_data);
|
| 9882 |
|
|
bfd_vma pc = input_section->output_section->vma
|
| 9883 |
|
|
+ input_section->output_offset + rel->r_offset;
|
| 9884 |
|
|
bfd_vma sb = 0; /* See note above. */
|
| 9885 |
|
|
bfd_vma residual;
|
| 9886 |
|
|
bfd_signed_vma signed_value;
|
| 9887 |
|
|
int group = 0;
|
| 9888 |
|
|
|
| 9889 |
|
|
/* Determine which groups of bits to calculate. */
|
| 9890 |
|
|
switch (r_type)
|
| 9891 |
|
|
{
|
| 9892 |
|
|
case R_ARM_LDRS_PC_G0:
|
| 9893 |
|
|
case R_ARM_LDRS_SB_G0:
|
| 9894 |
|
|
group = 0;
|
| 9895 |
|
|
break;
|
| 9896 |
|
|
|
| 9897 |
|
|
case R_ARM_LDRS_PC_G1:
|
| 9898 |
|
|
case R_ARM_LDRS_SB_G1:
|
| 9899 |
|
|
group = 1;
|
| 9900 |
|
|
break;
|
| 9901 |
|
|
|
| 9902 |
|
|
case R_ARM_LDRS_PC_G2:
|
| 9903 |
|
|
case R_ARM_LDRS_SB_G2:
|
| 9904 |
|
|
group = 2;
|
| 9905 |
|
|
break;
|
| 9906 |
|
|
|
| 9907 |
|
|
default:
|
| 9908 |
|
|
abort ();
|
| 9909 |
|
|
}
|
| 9910 |
|
|
|
| 9911 |
|
|
/* If REL, extract the addend from the insn. If RELA, it will
|
| 9912 |
|
|
have already been fetched for us. */
|
| 9913 |
|
|
if (globals->use_rel)
|
| 9914 |
|
|
{
|
| 9915 |
|
|
int negative = (insn & (1 << 23)) ? 1 : -1;
|
| 9916 |
|
|
signed_addend = negative * (((insn & 0xf00) >> 4) + (insn & 0xf));
|
| 9917 |
|
|
}
|
| 9918 |
|
|
|
| 9919 |
|
|
/* Compute the value (X) to go in the place. */
|
| 9920 |
|
|
if (r_type == R_ARM_LDRS_PC_G0
|
| 9921 |
|
|
|| r_type == R_ARM_LDRS_PC_G1
|
| 9922 |
|
|
|| r_type == R_ARM_LDRS_PC_G2)
|
| 9923 |
|
|
/* PC relative. */
|
| 9924 |
|
|
signed_value = value - pc + signed_addend;
|
| 9925 |
|
|
else
|
| 9926 |
|
|
/* Section base relative. */
|
| 9927 |
|
|
signed_value = value - sb + signed_addend;
|
| 9928 |
|
|
|
| 9929 |
|
|
/* Calculate the value of the relevant G_{n-1} to obtain
|
| 9930 |
|
|
the residual at that stage. */
|
| 9931 |
|
|
calculate_group_reloc_mask (abs (signed_value), group - 1, &residual);
|
| 9932 |
|
|
|
| 9933 |
|
|
/* Check for overflow. */
|
| 9934 |
|
|
if (residual >= 0x100)
|
| 9935 |
|
|
{
|
| 9936 |
|
|
(*_bfd_error_handler)
|
| 9937 |
|
|
(_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
|
| 9938 |
|
|
input_bfd, input_section,
|
| 9939 |
|
|
(long) rel->r_offset, abs (signed_value), howto->name);
|
| 9940 |
|
|
return bfd_reloc_overflow;
|
| 9941 |
|
|
}
|
| 9942 |
|
|
|
| 9943 |
|
|
/* Mask out the value and U bit. */
|
| 9944 |
|
|
insn &= 0xff7ff0f0;
|
| 9945 |
|
|
|
| 9946 |
|
|
/* Set the U bit if the value to go in the place is non-negative. */
|
| 9947 |
|
|
if (signed_value >= 0)
|
| 9948 |
|
|
insn |= 1 << 23;
|
| 9949 |
|
|
|
| 9950 |
|
|
/* Encode the offset. */
|
| 9951 |
|
|
insn |= ((residual & 0xf0) << 4) | (residual & 0xf);
|
| 9952 |
|
|
|
| 9953 |
|
|
bfd_put_32 (input_bfd, insn, hit_data);
|
| 9954 |
|
|
}
|
| 9955 |
|
|
return bfd_reloc_ok;
|
| 9956 |
|
|
|
| 9957 |
|
|
case R_ARM_LDC_PC_G0:
|
| 9958 |
|
|
case R_ARM_LDC_PC_G1:
|
| 9959 |
|
|
case R_ARM_LDC_PC_G2:
|
| 9960 |
|
|
case R_ARM_LDC_SB_G0:
|
| 9961 |
|
|
case R_ARM_LDC_SB_G1:
|
| 9962 |
|
|
case R_ARM_LDC_SB_G2:
|
| 9963 |
|
|
{
|
| 9964 |
|
|
bfd_vma insn = bfd_get_32 (input_bfd, hit_data);
|
| 9965 |
|
|
bfd_vma pc = input_section->output_section->vma
|
| 9966 |
|
|
+ input_section->output_offset + rel->r_offset;
|
| 9967 |
|
|
bfd_vma sb = 0; /* See note above. */
|
| 9968 |
|
|
bfd_vma residual;
|
| 9969 |
|
|
bfd_signed_vma signed_value;
|
| 9970 |
|
|
int group = 0;
|
| 9971 |
|
|
|
| 9972 |
|
|
/* Determine which groups of bits to calculate. */
|
| 9973 |
|
|
switch (r_type)
|
| 9974 |
|
|
{
|
| 9975 |
|
|
case R_ARM_LDC_PC_G0:
|
| 9976 |
|
|
case R_ARM_LDC_SB_G0:
|
| 9977 |
|
|
group = 0;
|
| 9978 |
|
|
break;
|
| 9979 |
|
|
|
| 9980 |
|
|
case R_ARM_LDC_PC_G1:
|
| 9981 |
|
|
case R_ARM_LDC_SB_G1:
|
| 9982 |
|
|
group = 1;
|
| 9983 |
|
|
break;
|
| 9984 |
|
|
|
| 9985 |
|
|
case R_ARM_LDC_PC_G2:
|
| 9986 |
|
|
case R_ARM_LDC_SB_G2:
|
| 9987 |
|
|
group = 2;
|
| 9988 |
|
|
break;
|
| 9989 |
|
|
|
| 9990 |
|
|
default:
|
| 9991 |
|
|
abort ();
|
| 9992 |
|
|
}
|
| 9993 |
|
|
|
| 9994 |
|
|
/* If REL, extract the addend from the insn. If RELA, it will
|
| 9995 |
|
|
have already been fetched for us. */
|
| 9996 |
|
|
if (globals->use_rel)
|
| 9997 |
|
|
{
|
| 9998 |
|
|
int negative = (insn & (1 << 23)) ? 1 : -1;
|
| 9999 |
|
|
signed_addend = negative * ((insn & 0xff) << 2);
|
| 10000 |
|
|
}
|
| 10001 |
|
|
|
| 10002 |
|
|
/* Compute the value (X) to go in the place. */
|
| 10003 |
|
|
if (r_type == R_ARM_LDC_PC_G0
|
| 10004 |
|
|
|| r_type == R_ARM_LDC_PC_G1
|
| 10005 |
|
|
|| r_type == R_ARM_LDC_PC_G2)
|
| 10006 |
|
|
/* PC relative. */
|
| 10007 |
|
|
signed_value = value - pc + signed_addend;
|
| 10008 |
|
|
else
|
| 10009 |
|
|
/* Section base relative. */
|
| 10010 |
|
|
signed_value = value - sb + signed_addend;
|
| 10011 |
|
|
|
| 10012 |
|
|
/* Calculate the value of the relevant G_{n-1} to obtain
|
| 10013 |
|
|
the residual at that stage. */
|
| 10014 |
|
|
calculate_group_reloc_mask (abs (signed_value), group - 1, &residual);
|
| 10015 |
|
|
|
| 10016 |
|
|
/* Check for overflow. (The absolute value to go in the place must be
|
| 10017 |
|
|
divisible by four and, after having been divided by four, must
|
| 10018 |
|
|
fit in eight bits.) */
|
| 10019 |
|
|
if ((residual & 0x3) != 0 || residual >= 0x400)
|
| 10020 |
|
|
{
|
| 10021 |
|
|
(*_bfd_error_handler)
|
| 10022 |
|
|
(_("%B(%A+0x%lx): Overflow whilst splitting 0x%lx for group relocation %s"),
|
| 10023 |
|
|
input_bfd, input_section,
|
| 10024 |
|
|
(long) rel->r_offset, abs (signed_value), howto->name);
|
| 10025 |
|
|
return bfd_reloc_overflow;
|
| 10026 |
|
|
}
|
| 10027 |
|
|
|
| 10028 |
|
|
/* Mask out the value and U bit. */
|
| 10029 |
|
|
insn &= 0xff7fff00;
|
| 10030 |
|
|
|
| 10031 |
|
|
/* Set the U bit if the value to go in the place is non-negative. */
|
| 10032 |
|
|
if (signed_value >= 0)
|
| 10033 |
|
|
insn |= 1 << 23;
|
| 10034 |
|
|
|
| 10035 |
|
|
/* Encode the offset. */
|
| 10036 |
|
|
insn |= residual >> 2;
|
| 10037 |
|
|
|
| 10038 |
|
|
bfd_put_32 (input_bfd, insn, hit_data);
|
| 10039 |
|
|
}
|
| 10040 |
|
|
return bfd_reloc_ok;
|
| 10041 |
|
|
|
| 10042 |
|
|
default:
|
| 10043 |
|
|
return bfd_reloc_notsupported;
|
| 10044 |
|
|
}
|
| 10045 |
|
|
}
|
| 10046 |
|
|
|
| 10047 |
|
|
/* Add INCREMENT to the reloc (of type HOWTO) at ADDRESS. */
|
| 10048 |
|
|
static void
|
| 10049 |
|
|
arm_add_to_rel (bfd * abfd,
|
| 10050 |
|
|
bfd_byte * address,
|
| 10051 |
|
|
reloc_howto_type * howto,
|
| 10052 |
|
|
bfd_signed_vma increment)
|
| 10053 |
|
|
{
|
| 10054 |
|
|
bfd_signed_vma addend;
|
| 10055 |
|
|
|
| 10056 |
|
|
if (howto->type == R_ARM_THM_CALL
|
| 10057 |
|
|
|| howto->type == R_ARM_THM_JUMP24)
|
| 10058 |
|
|
{
|
| 10059 |
|
|
int upper_insn, lower_insn;
|
| 10060 |
|
|
int upper, lower;
|
| 10061 |
|
|
|
| 10062 |
|
|
upper_insn = bfd_get_16 (abfd, address);
|
| 10063 |
|
|
lower_insn = bfd_get_16 (abfd, address + 2);
|
| 10064 |
|
|
upper = upper_insn & 0x7ff;
|
| 10065 |
|
|
lower = lower_insn & 0x7ff;
|
| 10066 |
|
|
|
| 10067 |
|
|
addend = (upper << 12) | (lower << 1);
|
| 10068 |
|
|
addend += increment;
|
| 10069 |
|
|
addend >>= 1;
|
| 10070 |
|
|
|
| 10071 |
|
|
upper_insn = (upper_insn & 0xf800) | ((addend >> 11) & 0x7ff);
|
| 10072 |
|
|
lower_insn = (lower_insn & 0xf800) | (addend & 0x7ff);
|
| 10073 |
|
|
|
| 10074 |
|
|
bfd_put_16 (abfd, (bfd_vma) upper_insn, address);
|
| 10075 |
|
|
bfd_put_16 (abfd, (bfd_vma) lower_insn, address + 2);
|
| 10076 |
|
|
}
|
| 10077 |
|
|
else
|
| 10078 |
|
|
{
|
| 10079 |
|
|
bfd_vma contents;
|
| 10080 |
|
|
|
| 10081 |
|
|
contents = bfd_get_32 (abfd, address);
|
| 10082 |
|
|
|
| 10083 |
|
|
/* Get the (signed) value from the instruction. */
|
| 10084 |
|
|
addend = contents & howto->src_mask;
|
| 10085 |
|
|
if (addend & ((howto->src_mask + 1) >> 1))
|
| 10086 |
|
|
{
|
| 10087 |
|
|
bfd_signed_vma mask;
|
| 10088 |
|
|
|
| 10089 |
|
|
mask = -1;
|
| 10090 |
|
|
mask &= ~ howto->src_mask;
|
| 10091 |
|
|
addend |= mask;
|
| 10092 |
|
|
}
|
| 10093 |
|
|
|
| 10094 |
|
|
/* Add in the increment, (which is a byte value). */
|
| 10095 |
|
|
switch (howto->type)
|
| 10096 |
|
|
{
|
| 10097 |
|
|
default:
|
| 10098 |
|
|
addend += increment;
|
| 10099 |
|
|
break;
|
| 10100 |
|
|
|
| 10101 |
|
|
case R_ARM_PC24:
|
| 10102 |
|
|
case R_ARM_PLT32:
|
| 10103 |
|
|
case R_ARM_CALL:
|
| 10104 |
|
|
case R_ARM_JUMP24:
|
| 10105 |
|
|
addend <<= howto->size;
|
| 10106 |
|
|
addend += increment;
|
| 10107 |
|
|
|
| 10108 |
|
|
/* Should we check for overflow here ? */
|
| 10109 |
|
|
|
| 10110 |
|
|
/* Drop any undesired bits. */
|
| 10111 |
|
|
addend >>= howto->rightshift;
|
| 10112 |
|
|
break;
|
| 10113 |
|
|
}
|
| 10114 |
|
|
|
| 10115 |
|
|
contents = (contents & ~ howto->dst_mask) | (addend & howto->dst_mask);
|
| 10116 |
|
|
|
| 10117 |
|
|
bfd_put_32 (abfd, contents, address);
|
| 10118 |
|
|
}
|
| 10119 |
|
|
}
|
| 10120 |
|
|
|
| 10121 |
|
|
#define IS_ARM_TLS_RELOC(R_TYPE) \
|
| 10122 |
|
|
((R_TYPE) == R_ARM_TLS_GD32 \
|
| 10123 |
|
|
|| (R_TYPE) == R_ARM_TLS_LDO32 \
|
| 10124 |
|
|
|| (R_TYPE) == R_ARM_TLS_LDM32 \
|
| 10125 |
|
|
|| (R_TYPE) == R_ARM_TLS_DTPOFF32 \
|
| 10126 |
|
|
|| (R_TYPE) == R_ARM_TLS_DTPMOD32 \
|
| 10127 |
|
|
|| (R_TYPE) == R_ARM_TLS_TPOFF32 \
|
| 10128 |
|
|
|| (R_TYPE) == R_ARM_TLS_LE32 \
|
| 10129 |
|
|
|| (R_TYPE) == R_ARM_TLS_IE32 \
|
| 10130 |
|
|
|| IS_ARM_TLS_GNU_RELOC (R_TYPE))
|
| 10131 |
|
|
|
| 10132 |
|
|
/* Specific set of relocations for the gnu tls dialect. */
|
| 10133 |
|
|
#define IS_ARM_TLS_GNU_RELOC(R_TYPE) \
|
| 10134 |
|
|
((R_TYPE) == R_ARM_TLS_GOTDESC \
|
| 10135 |
|
|
|| (R_TYPE) == R_ARM_TLS_CALL \
|
| 10136 |
|
|
|| (R_TYPE) == R_ARM_THM_TLS_CALL \
|
| 10137 |
|
|
|| (R_TYPE) == R_ARM_TLS_DESCSEQ \
|
| 10138 |
|
|
|| (R_TYPE) == R_ARM_THM_TLS_DESCSEQ)
|
| 10139 |
|
|
|
| 10140 |
|
|
/* Relocate an ARM ELF section. */
|
| 10141 |
|
|
|
| 10142 |
|
|
static bfd_boolean
|
| 10143 |
|
|
elf32_arm_relocate_section (bfd * output_bfd,
|
| 10144 |
|
|
struct bfd_link_info * info,
|
| 10145 |
|
|
bfd * input_bfd,
|
| 10146 |
|
|
asection * input_section,
|
| 10147 |
|
|
bfd_byte * contents,
|
| 10148 |
|
|
Elf_Internal_Rela * relocs,
|
| 10149 |
|
|
Elf_Internal_Sym * local_syms,
|
| 10150 |
|
|
asection ** local_sections)
|
| 10151 |
|
|
{
|
| 10152 |
|
|
Elf_Internal_Shdr *symtab_hdr;
|
| 10153 |
|
|
struct elf_link_hash_entry **sym_hashes;
|
| 10154 |
|
|
Elf_Internal_Rela *rel;
|
| 10155 |
|
|
Elf_Internal_Rela *relend;
|
| 10156 |
|
|
const char *name;
|
| 10157 |
|
|
struct elf32_arm_link_hash_table * globals;
|
| 10158 |
|
|
|
| 10159 |
|
|
globals = elf32_arm_hash_table (info);
|
| 10160 |
|
|
if (globals == NULL)
|
| 10161 |
|
|
return FALSE;
|
| 10162 |
|
|
|
| 10163 |
|
|
symtab_hdr = & elf_symtab_hdr (input_bfd);
|
| 10164 |
|
|
sym_hashes = elf_sym_hashes (input_bfd);
|
| 10165 |
|
|
|
| 10166 |
|
|
rel = relocs;
|
| 10167 |
|
|
relend = relocs + input_section->reloc_count;
|
| 10168 |
|
|
for (; rel < relend; rel++)
|
| 10169 |
|
|
{
|
| 10170 |
|
|
int r_type;
|
| 10171 |
|
|
reloc_howto_type * howto;
|
| 10172 |
|
|
unsigned long r_symndx;
|
| 10173 |
|
|
Elf_Internal_Sym * sym;
|
| 10174 |
|
|
asection * sec;
|
| 10175 |
|
|
struct elf_link_hash_entry * h;
|
| 10176 |
|
|
bfd_vma relocation;
|
| 10177 |
|
|
bfd_reloc_status_type r;
|
| 10178 |
|
|
arelent bfd_reloc;
|
| 10179 |
|
|
char sym_type;
|
| 10180 |
|
|
bfd_boolean unresolved_reloc = FALSE;
|
| 10181 |
|
|
char *error_message = NULL;
|
| 10182 |
|
|
|
| 10183 |
|
|
r_symndx = ELF32_R_SYM (rel->r_info);
|
| 10184 |
|
|
r_type = ELF32_R_TYPE (rel->r_info);
|
| 10185 |
|
|
r_type = arm_real_reloc_type (globals, r_type);
|
| 10186 |
|
|
|
| 10187 |
|
|
if ( r_type == R_ARM_GNU_VTENTRY
|
| 10188 |
|
|
|| r_type == R_ARM_GNU_VTINHERIT)
|
| 10189 |
|
|
continue;
|
| 10190 |
|
|
|
| 10191 |
|
|
bfd_reloc.howto = elf32_arm_howto_from_type (r_type);
|
| 10192 |
|
|
howto = bfd_reloc.howto;
|
| 10193 |
|
|
|
| 10194 |
|
|
h = NULL;
|
| 10195 |
|
|
sym = NULL;
|
| 10196 |
|
|
sec = NULL;
|
| 10197 |
|
|
|
| 10198 |
|
|
if (r_symndx < symtab_hdr->sh_info)
|
| 10199 |
|
|
{
|
| 10200 |
|
|
sym = local_syms + r_symndx;
|
| 10201 |
|
|
sym_type = ELF32_ST_TYPE (sym->st_info);
|
| 10202 |
|
|
sec = local_sections[r_symndx];
|
| 10203 |
|
|
|
| 10204 |
|
|
/* An object file might have a reference to a local
|
| 10205 |
|
|
undefined symbol. This is a daft object file, but we
|
| 10206 |
|
|
should at least do something about it. V4BX & NONE
|
| 10207 |
|
|
relocations do not use the symbol and are explicitly
|
| 10208 |
|
|
allowed to use the undefined symbol, so allow those.
|
| 10209 |
|
|
Likewise for relocations against STN_UNDEF. */
|
| 10210 |
|
|
if (r_type != R_ARM_V4BX
|
| 10211 |
|
|
&& r_type != R_ARM_NONE
|
| 10212 |
|
|
&& r_symndx != STN_UNDEF
|
| 10213 |
|
|
&& bfd_is_und_section (sec)
|
| 10214 |
|
|
&& ELF_ST_BIND (sym->st_info) != STB_WEAK)
|
| 10215 |
|
|
{
|
| 10216 |
|
|
if (!info->callbacks->undefined_symbol
|
| 10217 |
|
|
(info, bfd_elf_string_from_elf_section
|
| 10218 |
|
|
(input_bfd, symtab_hdr->sh_link, sym->st_name),
|
| 10219 |
|
|
input_bfd, input_section,
|
| 10220 |
|
|
rel->r_offset, TRUE))
|
| 10221 |
|
|
return FALSE;
|
| 10222 |
|
|
}
|
| 10223 |
|
|
|
| 10224 |
|
|
if (globals->use_rel)
|
| 10225 |
|
|
{
|
| 10226 |
|
|
relocation = (sec->output_section->vma
|
| 10227 |
|
|
+ sec->output_offset
|
| 10228 |
|
|
+ sym->st_value);
|
| 10229 |
|
|
if (!info->relocatable
|
| 10230 |
|
|
&& (sec->flags & SEC_MERGE)
|
| 10231 |
|
|
&& ELF_ST_TYPE (sym->st_info) == STT_SECTION)
|
| 10232 |
|
|
{
|
| 10233 |
|
|
asection *msec;
|
| 10234 |
|
|
bfd_vma addend, value;
|
| 10235 |
|
|
|
| 10236 |
|
|
switch (r_type)
|
| 10237 |
|
|
{
|
| 10238 |
|
|
case R_ARM_MOVW_ABS_NC:
|
| 10239 |
|
|
case R_ARM_MOVT_ABS:
|
| 10240 |
|
|
value = bfd_get_32 (input_bfd, contents + rel->r_offset);
|
| 10241 |
|
|
addend = ((value & 0xf0000) >> 4) | (value & 0xfff);
|
| 10242 |
|
|
addend = (addend ^ 0x8000) - 0x8000;
|
| 10243 |
|
|
break;
|
| 10244 |
|
|
|
| 10245 |
|
|
case R_ARM_THM_MOVW_ABS_NC:
|
| 10246 |
|
|
case R_ARM_THM_MOVT_ABS:
|
| 10247 |
|
|
value = bfd_get_16 (input_bfd, contents + rel->r_offset)
|
| 10248 |
|
|
<< 16;
|
| 10249 |
|
|
value |= bfd_get_16 (input_bfd,
|
| 10250 |
|
|
contents + rel->r_offset + 2);
|
| 10251 |
|
|
addend = ((value & 0xf7000) >> 4) | (value & 0xff)
|
| 10252 |
|
|
| ((value & 0x04000000) >> 15);
|
| 10253 |
|
|
addend = (addend ^ 0x8000) - 0x8000;
|
| 10254 |
|
|
break;
|
| 10255 |
|
|
|
| 10256 |
|
|
default:
|
| 10257 |
|
|
if (howto->rightshift
|
| 10258 |
|
|
|| (howto->src_mask & (howto->src_mask + 1)))
|
| 10259 |
|
|
{
|
| 10260 |
|
|
(*_bfd_error_handler)
|
| 10261 |
|
|
(_("%B(%A+0x%lx): %s relocation against SEC_MERGE section"),
|
| 10262 |
|
|
input_bfd, input_section,
|
| 10263 |
|
|
(long) rel->r_offset, howto->name);
|
| 10264 |
|
|
return FALSE;
|
| 10265 |
|
|
}
|
| 10266 |
|
|
|
| 10267 |
|
|
value = bfd_get_32 (input_bfd, contents + rel->r_offset);
|
| 10268 |
|
|
|
| 10269 |
|
|
/* Get the (signed) value from the instruction. */
|
| 10270 |
|
|
addend = value & howto->src_mask;
|
| 10271 |
|
|
if (addend & ((howto->src_mask + 1) >> 1))
|
| 10272 |
|
|
{
|
| 10273 |
|
|
bfd_signed_vma mask;
|
| 10274 |
|
|
|
| 10275 |
|
|
mask = -1;
|
| 10276 |
|
|
mask &= ~ howto->src_mask;
|
| 10277 |
|
|
addend |= mask;
|
| 10278 |
|
|
}
|
| 10279 |
|
|
break;
|
| 10280 |
|
|
}
|
| 10281 |
|
|
|
| 10282 |
|
|
msec = sec;
|
| 10283 |
|
|
addend =
|
| 10284 |
|
|
_bfd_elf_rel_local_sym (output_bfd, sym, &msec, addend)
|
| 10285 |
|
|
- relocation;
|
| 10286 |
|
|
addend += msec->output_section->vma + msec->output_offset;
|
| 10287 |
|
|
|
| 10288 |
|
|
/* Cases here must match those in the preceding
|
| 10289 |
|
|
switch statement. */
|
| 10290 |
|
|
switch (r_type)
|
| 10291 |
|
|
{
|
| 10292 |
|
|
case R_ARM_MOVW_ABS_NC:
|
| 10293 |
|
|
case R_ARM_MOVT_ABS:
|
| 10294 |
|
|
value = (value & 0xfff0f000) | ((addend & 0xf000) << 4)
|
| 10295 |
|
|
| (addend & 0xfff);
|
| 10296 |
|
|
bfd_put_32 (input_bfd, value, contents + rel->r_offset);
|
| 10297 |
|
|
break;
|
| 10298 |
|
|
|
| 10299 |
|
|
case R_ARM_THM_MOVW_ABS_NC:
|
| 10300 |
|
|
case R_ARM_THM_MOVT_ABS:
|
| 10301 |
|
|
value = (value & 0xfbf08f00) | ((addend & 0xf700) << 4)
|
| 10302 |
|
|
| (addend & 0xff) | ((addend & 0x0800) << 15);
|
| 10303 |
|
|
bfd_put_16 (input_bfd, value >> 16,
|
| 10304 |
|
|
contents + rel->r_offset);
|
| 10305 |
|
|
bfd_put_16 (input_bfd, value,
|
| 10306 |
|
|
contents + rel->r_offset + 2);
|
| 10307 |
|
|
break;
|
| 10308 |
|
|
|
| 10309 |
|
|
default:
|
| 10310 |
|
|
value = (value & ~ howto->dst_mask)
|
| 10311 |
|
|
| (addend & howto->dst_mask);
|
| 10312 |
|
|
bfd_put_32 (input_bfd, value, contents + rel->r_offset);
|
| 10313 |
|
|
break;
|
| 10314 |
|
|
}
|
| 10315 |
|
|
}
|
| 10316 |
|
|
}
|
| 10317 |
|
|
else
|
| 10318 |
|
|
relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
|
| 10319 |
|
|
}
|
| 10320 |
|
|
else
|
| 10321 |
|
|
{
|
| 10322 |
|
|
bfd_boolean warned;
|
| 10323 |
|
|
|
| 10324 |
|
|
RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
|
| 10325 |
|
|
r_symndx, symtab_hdr, sym_hashes,
|
| 10326 |
|
|
h, sec, relocation,
|
| 10327 |
|
|
unresolved_reloc, warned);
|
| 10328 |
|
|
|
| 10329 |
|
|
sym_type = h->type;
|
| 10330 |
|
|
}
|
| 10331 |
|
|
|
| 10332 |
|
|
if (sec != NULL && elf_discarded_section (sec))
|
| 10333 |
|
|
RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
|
| 10334 |
|
|
rel, relend, howto, contents);
|
| 10335 |
|
|
|
| 10336 |
|
|
if (info->relocatable)
|
| 10337 |
|
|
{
|
| 10338 |
|
|
/* This is a relocatable link. We don't have to change
|
| 10339 |
|
|
anything, unless the reloc is against a section symbol,
|
| 10340 |
|
|
in which case we have to adjust according to where the
|
| 10341 |
|
|
section symbol winds up in the output section. */
|
| 10342 |
|
|
if (sym != NULL && ELF_ST_TYPE (sym->st_info) == STT_SECTION)
|
| 10343 |
|
|
{
|
| 10344 |
|
|
if (globals->use_rel)
|
| 10345 |
|
|
arm_add_to_rel (input_bfd, contents + rel->r_offset,
|
| 10346 |
|
|
howto, (bfd_signed_vma) sec->output_offset);
|
| 10347 |
|
|
else
|
| 10348 |
|
|
rel->r_addend += sec->output_offset;
|
| 10349 |
|
|
}
|
| 10350 |
|
|
continue;
|
| 10351 |
|
|
}
|
| 10352 |
|
|
|
| 10353 |
|
|
if (h != NULL)
|
| 10354 |
|
|
name = h->root.root.string;
|
| 10355 |
|
|
else
|
| 10356 |
|
|
{
|
| 10357 |
|
|
name = (bfd_elf_string_from_elf_section
|
| 10358 |
|
|
(input_bfd, symtab_hdr->sh_link, sym->st_name));
|
| 10359 |
|
|
if (name == NULL || *name == '\0')
|
| 10360 |
|
|
name = bfd_section_name (input_bfd, sec);
|
| 10361 |
|
|
}
|
| 10362 |
|
|
|
| 10363 |
|
|
if (r_symndx != STN_UNDEF
|
| 10364 |
|
|
&& r_type != R_ARM_NONE
|
| 10365 |
|
|
&& (h == NULL
|
| 10366 |
|
|
|| h->root.type == bfd_link_hash_defined
|
| 10367 |
|
|
|| h->root.type == bfd_link_hash_defweak)
|
| 10368 |
|
|
&& IS_ARM_TLS_RELOC (r_type) != (sym_type == STT_TLS))
|
| 10369 |
|
|
{
|
| 10370 |
|
|
(*_bfd_error_handler)
|
| 10371 |
|
|
((sym_type == STT_TLS
|
| 10372 |
|
|
? _("%B(%A+0x%lx): %s used with TLS symbol %s")
|
| 10373 |
|
|
: _("%B(%A+0x%lx): %s used with non-TLS symbol %s")),
|
| 10374 |
|
|
input_bfd,
|
| 10375 |
|
|
input_section,
|
| 10376 |
|
|
(long) rel->r_offset,
|
| 10377 |
|
|
howto->name,
|
| 10378 |
|
|
name);
|
| 10379 |
|
|
}
|
| 10380 |
|
|
|
| 10381 |
|
|
/* We call elf32_arm_final_link_relocate unless we're completely
|
| 10382 |
|
|
done, i.e., the relaxation produced the final output we want,
|
| 10383 |
|
|
and we won't let anybody mess with it. Also, we have to do
|
| 10384 |
|
|
addend adjustments in case of a R_ARM_TLS_GOTDESC relocation
|
| 10385 |
|
|
both in relaxed and non-relaxed cases */
|
| 10386 |
|
|
if ((elf32_arm_tls_transition (info, r_type, h) != (unsigned)r_type)
|
| 10387 |
|
|
|| (IS_ARM_TLS_GNU_RELOC (r_type)
|
| 10388 |
|
|
&& !((h ? elf32_arm_hash_entry (h)->tls_type :
|
| 10389 |
|
|
elf32_arm_local_got_tls_type (input_bfd)[r_symndx])
|
| 10390 |
|
|
& GOT_TLS_GDESC)))
|
| 10391 |
|
|
{
|
| 10392 |
|
|
r = elf32_arm_tls_relax (globals, input_bfd, input_section,
|
| 10393 |
|
|
contents, rel, h == NULL);
|
| 10394 |
|
|
/* This may have been marked unresolved because it came from
|
| 10395 |
|
|
a shared library. But we've just dealt with that. */
|
| 10396 |
|
|
unresolved_reloc = 0;
|
| 10397 |
|
|
}
|
| 10398 |
|
|
else
|
| 10399 |
|
|
r = bfd_reloc_continue;
|
| 10400 |
|
|
|
| 10401 |
|
|
if (r == bfd_reloc_continue)
|
| 10402 |
|
|
r = elf32_arm_final_link_relocate (howto, input_bfd, output_bfd,
|
| 10403 |
|
|
input_section, contents, rel,
|
| 10404 |
|
|
relocation, info, sec, name, sym_type,
|
| 10405 |
|
|
(h ? h->target_internal
|
| 10406 |
|
|
: ARM_SYM_BRANCH_TYPE (sym)), h,
|
| 10407 |
|
|
&unresolved_reloc, &error_message);
|
| 10408 |
|
|
|
| 10409 |
|
|
/* Dynamic relocs are not propagated for SEC_DEBUGGING sections
|
| 10410 |
|
|
because such sections are not SEC_ALLOC and thus ld.so will
|
| 10411 |
|
|
not process them. */
|
| 10412 |
|
|
if (unresolved_reloc
|
| 10413 |
|
|
&& !((input_section->flags & SEC_DEBUGGING) != 0
|
| 10414 |
163 |
khays |
&& h->def_dynamic)
|
| 10415 |
|
|
&& _bfd_elf_section_offset (output_bfd, info, input_section,
|
| 10416 |
|
|
rel->r_offset) != (bfd_vma) -1)
|
| 10417 |
14 |
khays |
{
|
| 10418 |
|
|
(*_bfd_error_handler)
|
| 10419 |
|
|
(_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
|
| 10420 |
|
|
input_bfd,
|
| 10421 |
|
|
input_section,
|
| 10422 |
|
|
(long) rel->r_offset,
|
| 10423 |
|
|
howto->name,
|
| 10424 |
|
|
h->root.root.string);
|
| 10425 |
|
|
return FALSE;
|
| 10426 |
|
|
}
|
| 10427 |
|
|
|
| 10428 |
|
|
if (r != bfd_reloc_ok)
|
| 10429 |
|
|
{
|
| 10430 |
|
|
switch (r)
|
| 10431 |
|
|
{
|
| 10432 |
|
|
case bfd_reloc_overflow:
|
| 10433 |
|
|
/* If the overflowing reloc was to an undefined symbol,
|
| 10434 |
|
|
we have already printed one error message and there
|
| 10435 |
|
|
is no point complaining again. */
|
| 10436 |
|
|
if ((! h ||
|
| 10437 |
|
|
h->root.type != bfd_link_hash_undefined)
|
| 10438 |
|
|
&& (!((*info->callbacks->reloc_overflow)
|
| 10439 |
|
|
(info, (h ? &h->root : NULL), name, howto->name,
|
| 10440 |
|
|
(bfd_vma) 0, input_bfd, input_section,
|
| 10441 |
|
|
rel->r_offset))))
|
| 10442 |
|
|
return FALSE;
|
| 10443 |
|
|
break;
|
| 10444 |
|
|
|
| 10445 |
|
|
case bfd_reloc_undefined:
|
| 10446 |
|
|
if (!((*info->callbacks->undefined_symbol)
|
| 10447 |
|
|
(info, name, input_bfd, input_section,
|
| 10448 |
|
|
rel->r_offset, TRUE)))
|
| 10449 |
|
|
return FALSE;
|
| 10450 |
|
|
break;
|
| 10451 |
|
|
|
| 10452 |
|
|
case bfd_reloc_outofrange:
|
| 10453 |
|
|
error_message = _("out of range");
|
| 10454 |
|
|
goto common_error;
|
| 10455 |
|
|
|
| 10456 |
|
|
case bfd_reloc_notsupported:
|
| 10457 |
|
|
error_message = _("unsupported relocation");
|
| 10458 |
|
|
goto common_error;
|
| 10459 |
|
|
|
| 10460 |
|
|
case bfd_reloc_dangerous:
|
| 10461 |
|
|
/* error_message should already be set. */
|
| 10462 |
|
|
goto common_error;
|
| 10463 |
|
|
|
| 10464 |
|
|
default:
|
| 10465 |
|
|
error_message = _("unknown error");
|
| 10466 |
|
|
/* Fall through. */
|
| 10467 |
|
|
|
| 10468 |
|
|
common_error:
|
| 10469 |
|
|
BFD_ASSERT (error_message != NULL);
|
| 10470 |
|
|
if (!((*info->callbacks->reloc_dangerous)
|
| 10471 |
|
|
(info, error_message, input_bfd, input_section,
|
| 10472 |
|
|
rel->r_offset)))
|
| 10473 |
|
|
return FALSE;
|
| 10474 |
|
|
break;
|
| 10475 |
|
|
}
|
| 10476 |
|
|
}
|
| 10477 |
|
|
}
|
| 10478 |
|
|
|
| 10479 |
|
|
return TRUE;
|
| 10480 |
|
|
}
|
| 10481 |
|
|
|
| 10482 |
|
|
/* Add a new unwind edit to the list described by HEAD, TAIL. If TINDEX is zero,
|
| 10483 |
|
|
adds the edit to the start of the list. (The list must be built in order of
|
| 10484 |
|
|
ascending TINDEX: the function's callers are primarily responsible for
|
| 10485 |
|
|
maintaining that condition). */
|
| 10486 |
|
|
|
| 10487 |
|
|
static void
|
| 10488 |
|
|
add_unwind_table_edit (arm_unwind_table_edit **head,
|
| 10489 |
|
|
arm_unwind_table_edit **tail,
|
| 10490 |
|
|
arm_unwind_edit_type type,
|
| 10491 |
|
|
asection *linked_section,
|
| 10492 |
|
|
unsigned int tindex)
|
| 10493 |
|
|
{
|
| 10494 |
|
|
arm_unwind_table_edit *new_edit = (arm_unwind_table_edit *)
|
| 10495 |
|
|
xmalloc (sizeof (arm_unwind_table_edit));
|
| 10496 |
|
|
|
| 10497 |
|
|
new_edit->type = type;
|
| 10498 |
|
|
new_edit->linked_section = linked_section;
|
| 10499 |
|
|
new_edit->index = tindex;
|
| 10500 |
|
|
|
| 10501 |
|
|
if (tindex > 0)
|
| 10502 |
|
|
{
|
| 10503 |
|
|
new_edit->next = NULL;
|
| 10504 |
|
|
|
| 10505 |
|
|
if (*tail)
|
| 10506 |
|
|
(*tail)->next = new_edit;
|
| 10507 |
|
|
|
| 10508 |
|
|
(*tail) = new_edit;
|
| 10509 |
|
|
|
| 10510 |
|
|
if (!*head)
|
| 10511 |
|
|
(*head) = new_edit;
|
| 10512 |
|
|
}
|
| 10513 |
|
|
else
|
| 10514 |
|
|
{
|
| 10515 |
|
|
new_edit->next = *head;
|
| 10516 |
|
|
|
| 10517 |
|
|
if (!*tail)
|
| 10518 |
|
|
*tail = new_edit;
|
| 10519 |
|
|
|
| 10520 |
|
|
*head = new_edit;
|
| 10521 |
|
|
}
|
| 10522 |
|
|
}
|
| 10523 |
|
|
|
| 10524 |
|
|
static _arm_elf_section_data *get_arm_elf_section_data (asection *);
|
| 10525 |
|
|
|
| 10526 |
|
|
/* Increase the size of EXIDX_SEC by ADJUST bytes. ADJUST mau be negative. */
|
| 10527 |
|
|
static void
|
| 10528 |
|
|
adjust_exidx_size(asection *exidx_sec, int adjust)
|
| 10529 |
|
|
{
|
| 10530 |
|
|
asection *out_sec;
|
| 10531 |
|
|
|
| 10532 |
|
|
if (!exidx_sec->rawsize)
|
| 10533 |
|
|
exidx_sec->rawsize = exidx_sec->size;
|
| 10534 |
|
|
|
| 10535 |
|
|
bfd_set_section_size (exidx_sec->owner, exidx_sec, exidx_sec->size + adjust);
|
| 10536 |
|
|
out_sec = exidx_sec->output_section;
|
| 10537 |
|
|
/* Adjust size of output section. */
|
| 10538 |
|
|
bfd_set_section_size (out_sec->owner, out_sec, out_sec->size +adjust);
|
| 10539 |
|
|
}
|
| 10540 |
|
|
|
| 10541 |
|
|
/* Insert an EXIDX_CANTUNWIND marker at the end of a section. */
|
| 10542 |
|
|
static void
|
| 10543 |
|
|
insert_cantunwind_after(asection *text_sec, asection *exidx_sec)
|
| 10544 |
|
|
{
|
| 10545 |
|
|
struct _arm_elf_section_data *exidx_arm_data;
|
| 10546 |
|
|
|
| 10547 |
|
|
exidx_arm_data = get_arm_elf_section_data (exidx_sec);
|
| 10548 |
|
|
add_unwind_table_edit (
|
| 10549 |
|
|
&exidx_arm_data->u.exidx.unwind_edit_list,
|
| 10550 |
|
|
&exidx_arm_data->u.exidx.unwind_edit_tail,
|
| 10551 |
|
|
INSERT_EXIDX_CANTUNWIND_AT_END, text_sec, UINT_MAX);
|
| 10552 |
|
|
|
| 10553 |
|
|
adjust_exidx_size(exidx_sec, 8);
|
| 10554 |
|
|
}
|
| 10555 |
|
|
|
| 10556 |
|
|
/* Scan .ARM.exidx tables, and create a list describing edits which should be
|
| 10557 |
|
|
made to those tables, such that:
|
| 10558 |
|
|
|
| 10559 |
|
|
1. Regions without unwind data are marked with EXIDX_CANTUNWIND entries.
|
| 10560 |
|
|
2. Duplicate entries are merged together (EXIDX_CANTUNWIND, or unwind
|
| 10561 |
|
|
codes which have been inlined into the index).
|
| 10562 |
|
|
|
| 10563 |
|
|
If MERGE_EXIDX_ENTRIES is false, duplicate entries are not merged.
|
| 10564 |
|
|
|
| 10565 |
|
|
The edits are applied when the tables are written
|
| 10566 |
|
|
(in elf32_arm_write_section).
|
| 10567 |
|
|
*/
|
| 10568 |
|
|
|
| 10569 |
|
|
bfd_boolean
|
| 10570 |
|
|
elf32_arm_fix_exidx_coverage (asection **text_section_order,
|
| 10571 |
|
|
unsigned int num_text_sections,
|
| 10572 |
|
|
struct bfd_link_info *info,
|
| 10573 |
|
|
bfd_boolean merge_exidx_entries)
|
| 10574 |
|
|
{
|
| 10575 |
|
|
bfd *inp;
|
| 10576 |
|
|
unsigned int last_second_word = 0, i;
|
| 10577 |
|
|
asection *last_exidx_sec = NULL;
|
| 10578 |
|
|
asection *last_text_sec = NULL;
|
| 10579 |
|
|
int last_unwind_type = -1;
|
| 10580 |
|
|
|
| 10581 |
|
|
/* Walk over all EXIDX sections, and create backlinks from the corrsponding
|
| 10582 |
|
|
text sections. */
|
| 10583 |
|
|
for (inp = info->input_bfds; inp != NULL; inp = inp->link_next)
|
| 10584 |
|
|
{
|
| 10585 |
|
|
asection *sec;
|
| 10586 |
|
|
|
| 10587 |
|
|
for (sec = inp->sections; sec != NULL; sec = sec->next)
|
| 10588 |
|
|
{
|
| 10589 |
|
|
struct bfd_elf_section_data *elf_sec = elf_section_data (sec);
|
| 10590 |
|
|
Elf_Internal_Shdr *hdr = &elf_sec->this_hdr;
|
| 10591 |
|
|
|
| 10592 |
|
|
if (!hdr || hdr->sh_type != SHT_ARM_EXIDX)
|
| 10593 |
|
|
continue;
|
| 10594 |
|
|
|
| 10595 |
|
|
if (elf_sec->linked_to)
|
| 10596 |
|
|
{
|
| 10597 |
|
|
Elf_Internal_Shdr *linked_hdr
|
| 10598 |
|
|
= &elf_section_data (elf_sec->linked_to)->this_hdr;
|
| 10599 |
|
|
struct _arm_elf_section_data *linked_sec_arm_data
|
| 10600 |
|
|
= get_arm_elf_section_data (linked_hdr->bfd_section);
|
| 10601 |
|
|
|
| 10602 |
|
|
if (linked_sec_arm_data == NULL)
|
| 10603 |
|
|
continue;
|
| 10604 |
|
|
|
| 10605 |
|
|
/* Link this .ARM.exidx section back from the text section it
|
| 10606 |
|
|
describes. */
|
| 10607 |
|
|
linked_sec_arm_data->u.text.arm_exidx_sec = sec;
|
| 10608 |
|
|
}
|
| 10609 |
|
|
}
|
| 10610 |
|
|
}
|
| 10611 |
|
|
|
| 10612 |
|
|
/* Walk all text sections in order of increasing VMA. Eilminate duplicate
|
| 10613 |
|
|
index table entries (EXIDX_CANTUNWIND and inlined unwind opcodes),
|
| 10614 |
|
|
and add EXIDX_CANTUNWIND entries for sections with no unwind table data. */
|
| 10615 |
|
|
|
| 10616 |
|
|
for (i = 0; i < num_text_sections; i++)
|
| 10617 |
|
|
{
|
| 10618 |
|
|
asection *sec = text_section_order[i];
|
| 10619 |
|
|
asection *exidx_sec;
|
| 10620 |
|
|
struct _arm_elf_section_data *arm_data = get_arm_elf_section_data (sec);
|
| 10621 |
|
|
struct _arm_elf_section_data *exidx_arm_data;
|
| 10622 |
|
|
bfd_byte *contents = NULL;
|
| 10623 |
|
|
int deleted_exidx_bytes = 0;
|
| 10624 |
|
|
bfd_vma j;
|
| 10625 |
|
|
arm_unwind_table_edit *unwind_edit_head = NULL;
|
| 10626 |
|
|
arm_unwind_table_edit *unwind_edit_tail = NULL;
|
| 10627 |
|
|
Elf_Internal_Shdr *hdr;
|
| 10628 |
|
|
bfd *ibfd;
|
| 10629 |
|
|
|
| 10630 |
|
|
if (arm_data == NULL)
|
| 10631 |
|
|
continue;
|
| 10632 |
|
|
|
| 10633 |
|
|
exidx_sec = arm_data->u.text.arm_exidx_sec;
|
| 10634 |
|
|
if (exidx_sec == NULL)
|
| 10635 |
|
|
{
|
| 10636 |
|
|
/* Section has no unwind data. */
|
| 10637 |
|
|
if (last_unwind_type == 0 || !last_exidx_sec)
|
| 10638 |
|
|
continue;
|
| 10639 |
|
|
|
| 10640 |
|
|
/* Ignore zero sized sections. */
|
| 10641 |
|
|
if (sec->size == 0)
|
| 10642 |
|
|
continue;
|
| 10643 |
|
|
|
| 10644 |
|
|
insert_cantunwind_after(last_text_sec, last_exidx_sec);
|
| 10645 |
|
|
last_unwind_type = 0;
|
| 10646 |
|
|
continue;
|
| 10647 |
|
|
}
|
| 10648 |
|
|
|
| 10649 |
|
|
/* Skip /DISCARD/ sections. */
|
| 10650 |
|
|
if (bfd_is_abs_section (exidx_sec->output_section))
|
| 10651 |
|
|
continue;
|
| 10652 |
|
|
|
| 10653 |
|
|
hdr = &elf_section_data (exidx_sec)->this_hdr;
|
| 10654 |
|
|
if (hdr->sh_type != SHT_ARM_EXIDX)
|
| 10655 |
|
|
continue;
|
| 10656 |
|
|
|
| 10657 |
|
|
exidx_arm_data = get_arm_elf_section_data (exidx_sec);
|
| 10658 |
|
|
if (exidx_arm_data == NULL)
|
| 10659 |
|
|
continue;
|
| 10660 |
|
|
|
| 10661 |
|
|
ibfd = exidx_sec->owner;
|
| 10662 |
|
|
|
| 10663 |
|
|
if (hdr->contents != NULL)
|
| 10664 |
|
|
contents = hdr->contents;
|
| 10665 |
|
|
else if (! bfd_malloc_and_get_section (ibfd, exidx_sec, &contents))
|
| 10666 |
|
|
/* An error? */
|
| 10667 |
|
|
continue;
|
| 10668 |
|
|
|
| 10669 |
|
|
for (j = 0; j < hdr->sh_size; j += 8)
|
| 10670 |
|
|
{
|
| 10671 |
|
|
unsigned int second_word = bfd_get_32 (ibfd, contents + j + 4);
|
| 10672 |
|
|
int unwind_type;
|
| 10673 |
|
|
int elide = 0;
|
| 10674 |
|
|
|
| 10675 |
|
|
/* An EXIDX_CANTUNWIND entry. */
|
| 10676 |
|
|
if (second_word == 1)
|
| 10677 |
|
|
{
|
| 10678 |
|
|
if (last_unwind_type == 0)
|
| 10679 |
|
|
elide = 1;
|
| 10680 |
|
|
unwind_type = 0;
|
| 10681 |
|
|
}
|
| 10682 |
|
|
/* Inlined unwinding data. Merge if equal to previous. */
|
| 10683 |
|
|
else if ((second_word & 0x80000000) != 0)
|
| 10684 |
|
|
{
|
| 10685 |
|
|
if (merge_exidx_entries
|
| 10686 |
|
|
&& last_second_word == second_word && last_unwind_type == 1)
|
| 10687 |
|
|
elide = 1;
|
| 10688 |
|
|
unwind_type = 1;
|
| 10689 |
|
|
last_second_word = second_word;
|
| 10690 |
|
|
}
|
| 10691 |
|
|
/* Normal table entry. In theory we could merge these too,
|
| 10692 |
|
|
but duplicate entries are likely to be much less common. */
|
| 10693 |
|
|
else
|
| 10694 |
|
|
unwind_type = 2;
|
| 10695 |
|
|
|
| 10696 |
|
|
if (elide)
|
| 10697 |
|
|
{
|
| 10698 |
|
|
add_unwind_table_edit (&unwind_edit_head, &unwind_edit_tail,
|
| 10699 |
|
|
DELETE_EXIDX_ENTRY, NULL, j / 8);
|
| 10700 |
|
|
|
| 10701 |
|
|
deleted_exidx_bytes += 8;
|
| 10702 |
|
|
}
|
| 10703 |
|
|
|
| 10704 |
|
|
last_unwind_type = unwind_type;
|
| 10705 |
|
|
}
|
| 10706 |
|
|
|
| 10707 |
|
|
/* Free contents if we allocated it ourselves. */
|
| 10708 |
|
|
if (contents != hdr->contents)
|
| 10709 |
|
|
free (contents);
|
| 10710 |
|
|
|
| 10711 |
|
|
/* Record edits to be applied later (in elf32_arm_write_section). */
|
| 10712 |
|
|
exidx_arm_data->u.exidx.unwind_edit_list = unwind_edit_head;
|
| 10713 |
|
|
exidx_arm_data->u.exidx.unwind_edit_tail = unwind_edit_tail;
|
| 10714 |
|
|
|
| 10715 |
|
|
if (deleted_exidx_bytes > 0)
|
| 10716 |
|
|
adjust_exidx_size(exidx_sec, -deleted_exidx_bytes);
|
| 10717 |
|
|
|
| 10718 |
|
|
last_exidx_sec = exidx_sec;
|
| 10719 |
|
|
last_text_sec = sec;
|
| 10720 |
|
|
}
|
| 10721 |
|
|
|
| 10722 |
|
|
/* Add terminating CANTUNWIND entry. */
|
| 10723 |
|
|
if (last_exidx_sec && last_unwind_type != 0)
|
| 10724 |
|
|
insert_cantunwind_after(last_text_sec, last_exidx_sec);
|
| 10725 |
|
|
|
| 10726 |
|
|
return TRUE;
|
| 10727 |
|
|
}
|
| 10728 |
|
|
|
| 10729 |
|
|
static bfd_boolean
|
| 10730 |
|
|
elf32_arm_output_glue_section (struct bfd_link_info *info, bfd *obfd,
|
| 10731 |
|
|
bfd *ibfd, const char *name)
|
| 10732 |
|
|
{
|
| 10733 |
|
|
asection *sec, *osec;
|
| 10734 |
|
|
|
| 10735 |
|
|
sec = bfd_get_section_by_name (ibfd, name);
|
| 10736 |
|
|
if (sec == NULL || (sec->flags & SEC_EXCLUDE) != 0)
|
| 10737 |
|
|
return TRUE;
|
| 10738 |
|
|
|
| 10739 |
|
|
osec = sec->output_section;
|
| 10740 |
|
|
if (elf32_arm_write_section (obfd, info, sec, sec->contents))
|
| 10741 |
|
|
return TRUE;
|
| 10742 |
|
|
|
| 10743 |
|
|
if (! bfd_set_section_contents (obfd, osec, sec->contents,
|
| 10744 |
|
|
sec->output_offset, sec->size))
|
| 10745 |
|
|
return FALSE;
|
| 10746 |
|
|
|
| 10747 |
|
|
return TRUE;
|
| 10748 |
|
|
}
|
| 10749 |
|
|
|
| 10750 |
|
|
static bfd_boolean
|
| 10751 |
|
|
elf32_arm_final_link (bfd *abfd, struct bfd_link_info *info)
|
| 10752 |
|
|
{
|
| 10753 |
|
|
struct elf32_arm_link_hash_table *globals = elf32_arm_hash_table (info);
|
| 10754 |
|
|
asection *sec, *osec;
|
| 10755 |
|
|
|
| 10756 |
|
|
if (globals == NULL)
|
| 10757 |
|
|
return FALSE;
|
| 10758 |
|
|
|
| 10759 |
|
|
/* Invoke the regular ELF backend linker to do all the work. */
|
| 10760 |
|
|
if (!bfd_elf_final_link (abfd, info))
|
| 10761 |
|
|
return FALSE;
|
| 10762 |
|
|
|
| 10763 |
|
|
/* Process stub sections (eg BE8 encoding, ...). */
|
| 10764 |
|
|
struct elf32_arm_link_hash_table *htab = elf32_arm_hash_table (info);
|
| 10765 |
|
|
int i;
|
| 10766 |
|
|
for (i=0; i<htab->top_id; i++)
|
| 10767 |
|
|
{
|
| 10768 |
|
|
sec = htab->stub_group[i].stub_sec;
|
| 10769 |
|
|
/* Only process it once, in its link_sec slot. */
|
| 10770 |
|
|
if (sec && i == htab->stub_group[i].link_sec->id)
|
| 10771 |
|
|
{
|
| 10772 |
|
|
osec = sec->output_section;
|
| 10773 |
|
|
elf32_arm_write_section (abfd, info, sec, sec->contents);
|
| 10774 |
|
|
if (! bfd_set_section_contents (abfd, osec, sec->contents,
|
| 10775 |
|
|
sec->output_offset, sec->size))
|
| 10776 |
|
|
return FALSE;
|
| 10777 |
|
|
}
|
| 10778 |
|
|
}
|
| 10779 |
|
|
|
| 10780 |
|
|
/* Write out any glue sections now that we have created all the
|
| 10781 |
|
|
stubs. */
|
| 10782 |
|
|
if (globals->bfd_of_glue_owner != NULL)
|
| 10783 |
|
|
{
|
| 10784 |
|
|
if (! elf32_arm_output_glue_section (info, abfd,
|
| 10785 |
|
|
globals->bfd_of_glue_owner,
|
| 10786 |
|
|
ARM2THUMB_GLUE_SECTION_NAME))
|
| 10787 |
|
|
return FALSE;
|
| 10788 |
|
|
|
| 10789 |
|
|
if (! elf32_arm_output_glue_section (info, abfd,
|
| 10790 |
|
|
globals->bfd_of_glue_owner,
|
| 10791 |
|
|
THUMB2ARM_GLUE_SECTION_NAME))
|
| 10792 |
|
|
return FALSE;
|
| 10793 |
|
|
|
| 10794 |
|
|
if (! elf32_arm_output_glue_section (info, abfd,
|
| 10795 |
|
|
globals->bfd_of_glue_owner,
|
| 10796 |
|
|
VFP11_ERRATUM_VENEER_SECTION_NAME))
|
| 10797 |
|
|
return FALSE;
|
| 10798 |
|
|
|
| 10799 |
|
|
if (! elf32_arm_output_glue_section (info, abfd,
|
| 10800 |
|
|
globals->bfd_of_glue_owner,
|
| 10801 |
|
|
ARM_BX_GLUE_SECTION_NAME))
|
| 10802 |
|
|
return FALSE;
|
| 10803 |
|
|
}
|
| 10804 |
|
|
|
| 10805 |
|
|
return TRUE;
|
| 10806 |
|
|
}
|
| 10807 |
|
|
|
| 10808 |
|
|
/* Set the right machine number. */
|
| 10809 |
|
|
|
| 10810 |
|
|
static bfd_boolean
|
| 10811 |
|
|
elf32_arm_object_p (bfd *abfd)
|
| 10812 |
|
|
{
|
| 10813 |
|
|
unsigned int mach;
|
| 10814 |
|
|
|
| 10815 |
|
|
mach = bfd_arm_get_mach_from_notes (abfd, ARM_NOTE_SECTION);
|
| 10816 |
|
|
|
| 10817 |
|
|
if (mach != bfd_mach_arm_unknown)
|
| 10818 |
|
|
bfd_default_set_arch_mach (abfd, bfd_arch_arm, mach);
|
| 10819 |
|
|
|
| 10820 |
|
|
else if (elf_elfheader (abfd)->e_flags & EF_ARM_MAVERICK_FLOAT)
|
| 10821 |
|
|
bfd_default_set_arch_mach (abfd, bfd_arch_arm, bfd_mach_arm_ep9312);
|
| 10822 |
|
|
|
| 10823 |
|
|
else
|
| 10824 |
|
|
bfd_default_set_arch_mach (abfd, bfd_arch_arm, mach);
|
| 10825 |
|
|
|
| 10826 |
|
|
return TRUE;
|
| 10827 |
|
|
}
|
| 10828 |
|
|
|
| 10829 |
|
|
/* Function to keep ARM specific flags in the ELF header. */
|
| 10830 |
|
|
|
| 10831 |
|
|
static bfd_boolean
|
| 10832 |
|
|
elf32_arm_set_private_flags (bfd *abfd, flagword flags)
|
| 10833 |
|
|
{
|
| 10834 |
|
|
if (elf_flags_init (abfd)
|
| 10835 |
|
|
&& elf_elfheader (abfd)->e_flags != flags)
|
| 10836 |
|
|
{
|
| 10837 |
|
|
if (EF_ARM_EABI_VERSION (flags) == EF_ARM_EABI_UNKNOWN)
|
| 10838 |
|
|
{
|
| 10839 |
|
|
if (flags & EF_ARM_INTERWORK)
|
| 10840 |
|
|
(*_bfd_error_handler)
|
| 10841 |
|
|
(_("Warning: Not setting interworking flag of %B since it has already been specified as non-interworking"),
|
| 10842 |
|
|
abfd);
|
| 10843 |
|
|
else
|
| 10844 |
|
|
_bfd_error_handler
|
| 10845 |
|
|
(_("Warning: Clearing the interworking flag of %B due to outside request"),
|
| 10846 |
|
|
abfd);
|
| 10847 |
|
|
}
|
| 10848 |
|
|
}
|
| 10849 |
|
|
else
|
| 10850 |
|
|
{
|
| 10851 |
|
|
elf_elfheader (abfd)->e_flags = flags;
|
| 10852 |
|
|
elf_flags_init (abfd) = TRUE;
|
| 10853 |
|
|
}
|
| 10854 |
|
|
|
| 10855 |
|
|
return TRUE;
|
| 10856 |
|
|
}
|
| 10857 |
|
|
|
| 10858 |
|
|
/* Copy backend specific data from one object module to another. */
|
| 10859 |
|
|
|
| 10860 |
|
|
static bfd_boolean
|
| 10861 |
|
|
elf32_arm_copy_private_bfd_data (bfd *ibfd, bfd *obfd)
|
| 10862 |
|
|
{
|
| 10863 |
|
|
flagword in_flags;
|
| 10864 |
|
|
flagword out_flags;
|
| 10865 |
|
|
|
| 10866 |
|
|
if (! is_arm_elf (ibfd) || ! is_arm_elf (obfd))
|
| 10867 |
|
|
return TRUE;
|
| 10868 |
|
|
|
| 10869 |
|
|
in_flags = elf_elfheader (ibfd)->e_flags;
|
| 10870 |
|
|
out_flags = elf_elfheader (obfd)->e_flags;
|
| 10871 |
|
|
|
| 10872 |
|
|
if (elf_flags_init (obfd)
|
| 10873 |
|
|
&& EF_ARM_EABI_VERSION (out_flags) == EF_ARM_EABI_UNKNOWN
|
| 10874 |
|
|
&& in_flags != out_flags)
|
| 10875 |
|
|
{
|
| 10876 |
|
|
/* Cannot mix APCS26 and APCS32 code. */
|
| 10877 |
|
|
if ((in_flags & EF_ARM_APCS_26) != (out_flags & EF_ARM_APCS_26))
|
| 10878 |
|
|
return FALSE;
|
| 10879 |
|
|
|
| 10880 |
|
|
/* Cannot mix float APCS and non-float APCS code. */
|
| 10881 |
|
|
if ((in_flags & EF_ARM_APCS_FLOAT) != (out_flags & EF_ARM_APCS_FLOAT))
|
| 10882 |
|
|
return FALSE;
|
| 10883 |
|
|
|
| 10884 |
|
|
/* If the src and dest have different interworking flags
|
| 10885 |
|
|
then turn off the interworking bit. */
|
| 10886 |
|
|
if ((in_flags & EF_ARM_INTERWORK) != (out_flags & EF_ARM_INTERWORK))
|
| 10887 |
|
|
{
|
| 10888 |
|
|
if (out_flags & EF_ARM_INTERWORK)
|
| 10889 |
|
|
_bfd_error_handler
|
| 10890 |
|
|
(_("Warning: Clearing the interworking flag of %B because non-interworking code in %B has been linked with it"),
|
| 10891 |
|
|
obfd, ibfd);
|
| 10892 |
|
|
|
| 10893 |
|
|
in_flags &= ~EF_ARM_INTERWORK;
|
| 10894 |
|
|
}
|
| 10895 |
|
|
|
| 10896 |
|
|
/* Likewise for PIC, though don't warn for this case. */
|
| 10897 |
|
|
if ((in_flags & EF_ARM_PIC) != (out_flags & EF_ARM_PIC))
|
| 10898 |
|
|
in_flags &= ~EF_ARM_PIC;
|
| 10899 |
|
|
}
|
| 10900 |
|
|
|
| 10901 |
|
|
elf_elfheader (obfd)->e_flags = in_flags;
|
| 10902 |
|
|
elf_flags_init (obfd) = TRUE;
|
| 10903 |
|
|
|
| 10904 |
|
|
/* Also copy the EI_OSABI field. */
|
| 10905 |
|
|
elf_elfheader (obfd)->e_ident[EI_OSABI] =
|
| 10906 |
|
|
elf_elfheader (ibfd)->e_ident[EI_OSABI];
|
| 10907 |
|
|
|
| 10908 |
|
|
/* Copy object attributes. */
|
| 10909 |
|
|
_bfd_elf_copy_obj_attributes (ibfd, obfd);
|
| 10910 |
|
|
|
| 10911 |
|
|
return TRUE;
|
| 10912 |
|
|
}
|
| 10913 |
|
|
|
| 10914 |
|
|
/* Values for Tag_ABI_PCS_R9_use. */
|
| 10915 |
|
|
enum
|
| 10916 |
|
|
{
|
| 10917 |
|
|
AEABI_R9_V6,
|
| 10918 |
|
|
AEABI_R9_SB,
|
| 10919 |
|
|
AEABI_R9_TLS,
|
| 10920 |
|
|
AEABI_R9_unused
|
| 10921 |
|
|
};
|
| 10922 |
|
|
|
| 10923 |
|
|
/* Values for Tag_ABI_PCS_RW_data. */
|
| 10924 |
|
|
enum
|
| 10925 |
|
|
{
|
| 10926 |
|
|
AEABI_PCS_RW_data_absolute,
|
| 10927 |
|
|
AEABI_PCS_RW_data_PCrel,
|
| 10928 |
|
|
AEABI_PCS_RW_data_SBrel,
|
| 10929 |
|
|
AEABI_PCS_RW_data_unused
|
| 10930 |
|
|
};
|
| 10931 |
|
|
|
| 10932 |
|
|
/* Values for Tag_ABI_enum_size. */
|
| 10933 |
|
|
enum
|
| 10934 |
|
|
{
|
| 10935 |
|
|
AEABI_enum_unused,
|
| 10936 |
|
|
AEABI_enum_short,
|
| 10937 |
|
|
AEABI_enum_wide,
|
| 10938 |
|
|
AEABI_enum_forced_wide
|
| 10939 |
|
|
};
|
| 10940 |
|
|
|
| 10941 |
|
|
/* Determine whether an object attribute tag takes an integer, a
|
| 10942 |
|
|
string or both. */
|
| 10943 |
|
|
|
| 10944 |
|
|
static int
|
| 10945 |
|
|
elf32_arm_obj_attrs_arg_type (int tag)
|
| 10946 |
|
|
{
|
| 10947 |
|
|
if (tag == Tag_compatibility)
|
| 10948 |
|
|
return ATTR_TYPE_FLAG_INT_VAL | ATTR_TYPE_FLAG_STR_VAL;
|
| 10949 |
|
|
else if (tag == Tag_nodefaults)
|
| 10950 |
|
|
return ATTR_TYPE_FLAG_INT_VAL | ATTR_TYPE_FLAG_NO_DEFAULT;
|
| 10951 |
|
|
else if (tag == Tag_CPU_raw_name || tag == Tag_CPU_name)
|
| 10952 |
|
|
return ATTR_TYPE_FLAG_STR_VAL;
|
| 10953 |
|
|
else if (tag < 32)
|
| 10954 |
|
|
return ATTR_TYPE_FLAG_INT_VAL;
|
| 10955 |
|
|
else
|
| 10956 |
|
|
return (tag & 1) != 0 ? ATTR_TYPE_FLAG_STR_VAL : ATTR_TYPE_FLAG_INT_VAL;
|
| 10957 |
|
|
}
|
| 10958 |
|
|
|
| 10959 |
|
|
/* The ABI defines that Tag_conformance should be emitted first, and that
|
| 10960 |
|
|
Tag_nodefaults should be second (if either is defined). This sets those
|
| 10961 |
|
|
two positions, and bumps up the position of all the remaining tags to
|
| 10962 |
|
|
compensate. */
|
| 10963 |
|
|
static int
|
| 10964 |
|
|
elf32_arm_obj_attrs_order (int num)
|
| 10965 |
|
|
{
|
| 10966 |
|
|
if (num == LEAST_KNOWN_OBJ_ATTRIBUTE)
|
| 10967 |
|
|
return Tag_conformance;
|
| 10968 |
|
|
if (num == LEAST_KNOWN_OBJ_ATTRIBUTE + 1)
|
| 10969 |
|
|
return Tag_nodefaults;
|
| 10970 |
|
|
if ((num - 2) < Tag_nodefaults)
|
| 10971 |
|
|
return num - 2;
|
| 10972 |
|
|
if ((num - 1) < Tag_conformance)
|
| 10973 |
|
|
return num - 1;
|
| 10974 |
|
|
return num;
|
| 10975 |
|
|
}
|
| 10976 |
|
|
|
| 10977 |
|
|
/* Attribute numbers >=64 (mod 128) can be safely ignored. */
|
| 10978 |
|
|
static bfd_boolean
|
| 10979 |
|
|
elf32_arm_obj_attrs_handle_unknown (bfd *abfd, int tag)
|
| 10980 |
|
|
{
|
| 10981 |
|
|
if ((tag & 127) < 64)
|
| 10982 |
|
|
{
|
| 10983 |
|
|
_bfd_error_handler
|
| 10984 |
|
|
(_("%B: Unknown mandatory EABI object attribute %d"),
|
| 10985 |
|
|
abfd, tag);
|
| 10986 |
|
|
bfd_set_error (bfd_error_bad_value);
|
| 10987 |
|
|
return FALSE;
|
| 10988 |
|
|
}
|
| 10989 |
|
|
else
|
| 10990 |
|
|
{
|
| 10991 |
|
|
_bfd_error_handler
|
| 10992 |
|
|
(_("Warning: %B: Unknown EABI object attribute %d"),
|
| 10993 |
|
|
abfd, tag);
|
| 10994 |
|
|
return TRUE;
|
| 10995 |
|
|
}
|
| 10996 |
|
|
}
|
| 10997 |
|
|
|
| 10998 |
|
|
/* Read the architecture from the Tag_also_compatible_with attribute, if any.
|
| 10999 |
|
|
Returns -1 if no architecture could be read. */
|
| 11000 |
|
|
|
| 11001 |
|
|
static int
|
| 11002 |
|
|
get_secondary_compatible_arch (bfd *abfd)
|
| 11003 |
|
|
{
|
| 11004 |
|
|
obj_attribute *attr =
|
| 11005 |
|
|
&elf_known_obj_attributes_proc (abfd)[Tag_also_compatible_with];
|
| 11006 |
|
|
|
| 11007 |
|
|
/* Note: the tag and its argument below are uleb128 values, though
|
| 11008 |
|
|
currently-defined values fit in one byte for each. */
|
| 11009 |
|
|
if (attr->s
|
| 11010 |
|
|
&& attr->s[0] == Tag_CPU_arch
|
| 11011 |
|
|
&& (attr->s[1] & 128) != 128
|
| 11012 |
|
|
&& attr->s[2] == 0)
|
| 11013 |
|
|
return attr->s[1];
|
| 11014 |
|
|
|
| 11015 |
|
|
/* This tag is "safely ignorable", so don't complain if it looks funny. */
|
| 11016 |
|
|
return -1;
|
| 11017 |
|
|
}
|
| 11018 |
|
|
|
| 11019 |
|
|
/* Set, or unset, the architecture of the Tag_also_compatible_with attribute.
|
| 11020 |
|
|
The tag is removed if ARCH is -1. */
|
| 11021 |
|
|
|
| 11022 |
|
|
static void
|
| 11023 |
|
|
set_secondary_compatible_arch (bfd *abfd, int arch)
|
| 11024 |
|
|
{
|
| 11025 |
|
|
obj_attribute *attr =
|
| 11026 |
|
|
&elf_known_obj_attributes_proc (abfd)[Tag_also_compatible_with];
|
| 11027 |
|
|
|
| 11028 |
|
|
if (arch == -1)
|
| 11029 |
|
|
{
|
| 11030 |
|
|
attr->s = NULL;
|
| 11031 |
|
|
return;
|
| 11032 |
|
|
}
|
| 11033 |
|
|
|
| 11034 |
|
|
/* Note: the tag and its argument below are uleb128 values, though
|
| 11035 |
|
|
currently-defined values fit in one byte for each. */
|
| 11036 |
|
|
if (!attr->s)
|
| 11037 |
|
|
attr->s = (char *) bfd_alloc (abfd, 3);
|
| 11038 |
|
|
attr->s[0] = Tag_CPU_arch;
|
| 11039 |
|
|
attr->s[1] = arch;
|
| 11040 |
|
|
attr->s[2] = '\0';
|
| 11041 |
|
|
}
|
| 11042 |
|
|
|
| 11043 |
|
|
/* Combine two values for Tag_CPU_arch, taking secondary compatibility tags
|
| 11044 |
|
|
into account. */
|
| 11045 |
|
|
|
| 11046 |
|
|
static int
|
| 11047 |
|
|
tag_cpu_arch_combine (bfd *ibfd, int oldtag, int *secondary_compat_out,
|
| 11048 |
|
|
int newtag, int secondary_compat)
|
| 11049 |
|
|
{
|
| 11050 |
|
|
#define T(X) TAG_CPU_ARCH_##X
|
| 11051 |
|
|
int tagl, tagh, result;
|
| 11052 |
|
|
const int v6t2[] =
|
| 11053 |
|
|
{
|
| 11054 |
|
|
T(V6T2), /* PRE_V4. */
|
| 11055 |
|
|
T(V6T2), /* V4. */
|
| 11056 |
|
|
T(V6T2), /* V4T. */
|
| 11057 |
|
|
T(V6T2), /* V5T. */
|
| 11058 |
|
|
T(V6T2), /* V5TE. */
|
| 11059 |
|
|
T(V6T2), /* V5TEJ. */
|
| 11060 |
|
|
T(V6T2), /* V6. */
|
| 11061 |
|
|
T(V7), /* V6KZ. */
|
| 11062 |
|
|
T(V6T2) /* V6T2. */
|
| 11063 |
|
|
};
|
| 11064 |
|
|
const int v6k[] =
|
| 11065 |
|
|
{
|
| 11066 |
|
|
T(V6K), /* PRE_V4. */
|
| 11067 |
|
|
T(V6K), /* V4. */
|
| 11068 |
|
|
T(V6K), /* V4T. */
|
| 11069 |
|
|
T(V6K), /* V5T. */
|
| 11070 |
|
|
T(V6K), /* V5TE. */
|
| 11071 |
|
|
T(V6K), /* V5TEJ. */
|
| 11072 |
|
|
T(V6K), /* V6. */
|
| 11073 |
|
|
T(V6KZ), /* V6KZ. */
|
| 11074 |
|
|
T(V7), /* V6T2. */
|
| 11075 |
|
|
T(V6K) /* V6K. */
|
| 11076 |
|
|
};
|
| 11077 |
|
|
const int v7[] =
|
| 11078 |
|
|
{
|
| 11079 |
|
|
T(V7), /* PRE_V4. */
|
| 11080 |
|
|
T(V7), /* V4. */
|
| 11081 |
|
|
T(V7), /* V4T. */
|
| 11082 |
|
|
T(V7), /* V5T. */
|
| 11083 |
|
|
T(V7), /* V5TE. */
|
| 11084 |
|
|
T(V7), /* V5TEJ. */
|
| 11085 |
|
|
T(V7), /* V6. */
|
| 11086 |
|
|
T(V7), /* V6KZ. */
|
| 11087 |
|
|
T(V7), /* V6T2. */
|
| 11088 |
|
|
T(V7), /* V6K. */
|
| 11089 |
|
|
T(V7) /* V7. */
|
| 11090 |
|
|
};
|
| 11091 |
|
|
const int v6_m[] =
|
| 11092 |
|
|
{
|
| 11093 |
|
|
-1, /* PRE_V4. */
|
| 11094 |
|
|
-1, /* V4. */
|
| 11095 |
|
|
T(V6K), /* V4T. */
|
| 11096 |
|
|
T(V6K), /* V5T. */
|
| 11097 |
|
|
T(V6K), /* V5TE. */
|
| 11098 |
|
|
T(V6K), /* V5TEJ. */
|
| 11099 |
|
|
T(V6K), /* V6. */
|
| 11100 |
|
|
T(V6KZ), /* V6KZ. */
|
| 11101 |
|
|
T(V7), /* V6T2. */
|
| 11102 |
|
|
T(V6K), /* V6K. */
|
| 11103 |
|
|
T(V7), /* V7. */
|
| 11104 |
|
|
T(V6_M) /* V6_M. */
|
| 11105 |
|
|
};
|
| 11106 |
|
|
const int v6s_m[] =
|
| 11107 |
|
|
{
|
| 11108 |
|
|
-1, /* PRE_V4. */
|
| 11109 |
|
|
-1, /* V4. */
|
| 11110 |
|
|
T(V6K), /* V4T. */
|
| 11111 |
|
|
T(V6K), /* V5T. */
|
| 11112 |
|
|
T(V6K), /* V5TE. */
|
| 11113 |
|
|
T(V6K), /* V5TEJ. */
|
| 11114 |
|
|
T(V6K), /* V6. */
|
| 11115 |
|
|
T(V6KZ), /* V6KZ. */
|
| 11116 |
|
|
T(V7), /* V6T2. */
|
| 11117 |
|
|
T(V6K), /* V6K. */
|
| 11118 |
|
|
T(V7), /* V7. */
|
| 11119 |
|
|
T(V6S_M), /* V6_M. */
|
| 11120 |
|
|
T(V6S_M) /* V6S_M. */
|
| 11121 |
|
|
};
|
| 11122 |
|
|
const int v7e_m[] =
|
| 11123 |
|
|
{
|
| 11124 |
|
|
-1, /* PRE_V4. */
|
| 11125 |
|
|
-1, /* V4. */
|
| 11126 |
|
|
T(V7E_M), /* V4T. */
|
| 11127 |
|
|
T(V7E_M), /* V5T. */
|
| 11128 |
|
|
T(V7E_M), /* V5TE. */
|
| 11129 |
|
|
T(V7E_M), /* V5TEJ. */
|
| 11130 |
|
|
T(V7E_M), /* V6. */
|
| 11131 |
|
|
T(V7E_M), /* V6KZ. */
|
| 11132 |
|
|
T(V7E_M), /* V6T2. */
|
| 11133 |
|
|
T(V7E_M), /* V6K. */
|
| 11134 |
|
|
T(V7E_M), /* V7. */
|
| 11135 |
|
|
T(V7E_M), /* V6_M. */
|
| 11136 |
|
|
T(V7E_M), /* V6S_M. */
|
| 11137 |
|
|
T(V7E_M) /* V7E_M. */
|
| 11138 |
|
|
};
|
| 11139 |
|
|
const int v4t_plus_v6_m[] =
|
| 11140 |
|
|
{
|
| 11141 |
|
|
-1, /* PRE_V4. */
|
| 11142 |
|
|
-1, /* V4. */
|
| 11143 |
|
|
T(V4T), /* V4T. */
|
| 11144 |
|
|
T(V5T), /* V5T. */
|
| 11145 |
|
|
T(V5TE), /* V5TE. */
|
| 11146 |
|
|
T(V5TEJ), /* V5TEJ. */
|
| 11147 |
|
|
T(V6), /* V6. */
|
| 11148 |
|
|
T(V6KZ), /* V6KZ. */
|
| 11149 |
|
|
T(V6T2), /* V6T2. */
|
| 11150 |
|
|
T(V6K), /* V6K. */
|
| 11151 |
|
|
T(V7), /* V7. */
|
| 11152 |
|
|
T(V6_M), /* V6_M. */
|
| 11153 |
|
|
T(V6S_M), /* V6S_M. */
|
| 11154 |
|
|
T(V7E_M), /* V7E_M. */
|
| 11155 |
|
|
T(V4T_PLUS_V6_M) /* V4T plus V6_M. */
|
| 11156 |
|
|
};
|
| 11157 |
|
|
const int *comb[] =
|
| 11158 |
|
|
{
|
| 11159 |
|
|
v6t2,
|
| 11160 |
|
|
v6k,
|
| 11161 |
|
|
v7,
|
| 11162 |
|
|
v6_m,
|
| 11163 |
|
|
v6s_m,
|
| 11164 |
|
|
v7e_m,
|
| 11165 |
|
|
/* Pseudo-architecture. */
|
| 11166 |
|
|
v4t_plus_v6_m
|
| 11167 |
|
|
};
|
| 11168 |
|
|
|
| 11169 |
|
|
/* Check we've not got a higher architecture than we know about. */
|
| 11170 |
|
|
|
| 11171 |
|
|
if (oldtag > MAX_TAG_CPU_ARCH || newtag > MAX_TAG_CPU_ARCH)
|
| 11172 |
|
|
{
|
| 11173 |
|
|
_bfd_error_handler (_("error: %B: Unknown CPU architecture"), ibfd);
|
| 11174 |
|
|
return -1;
|
| 11175 |
|
|
}
|
| 11176 |
|
|
|
| 11177 |
|
|
/* Override old tag if we have a Tag_also_compatible_with on the output. */
|
| 11178 |
|
|
|
| 11179 |
|
|
if ((oldtag == T(V6_M) && *secondary_compat_out == T(V4T))
|
| 11180 |
|
|
|| (oldtag == T(V4T) && *secondary_compat_out == T(V6_M)))
|
| 11181 |
|
|
oldtag = T(V4T_PLUS_V6_M);
|
| 11182 |
|
|
|
| 11183 |
|
|
/* And override the new tag if we have a Tag_also_compatible_with on the
|
| 11184 |
|
|
input. */
|
| 11185 |
|
|
|
| 11186 |
|
|
if ((newtag == T(V6_M) && secondary_compat == T(V4T))
|
| 11187 |
|
|
|| (newtag == T(V4T) && secondary_compat == T(V6_M)))
|
| 11188 |
|
|
newtag = T(V4T_PLUS_V6_M);
|
| 11189 |
|
|
|
| 11190 |
|
|
tagl = (oldtag < newtag) ? oldtag : newtag;
|
| 11191 |
|
|
result = tagh = (oldtag > newtag) ? oldtag : newtag;
|
| 11192 |
|
|
|
| 11193 |
|
|
/* Architectures before V6KZ add features monotonically. */
|
| 11194 |
|
|
if (tagh <= TAG_CPU_ARCH_V6KZ)
|
| 11195 |
|
|
return result;
|
| 11196 |
|
|
|
| 11197 |
|
|
result = comb[tagh - T(V6T2)][tagl];
|
| 11198 |
|
|
|
| 11199 |
|
|
/* Use Tag_CPU_arch == V4T and Tag_also_compatible_with (Tag_CPU_arch V6_M)
|
| 11200 |
|
|
as the canonical version. */
|
| 11201 |
|
|
if (result == T(V4T_PLUS_V6_M))
|
| 11202 |
|
|
{
|
| 11203 |
|
|
result = T(V4T);
|
| 11204 |
|
|
*secondary_compat_out = T(V6_M);
|
| 11205 |
|
|
}
|
| 11206 |
|
|
else
|
| 11207 |
|
|
*secondary_compat_out = -1;
|
| 11208 |
|
|
|
| 11209 |
|
|
if (result == -1)
|
| 11210 |
|
|
{
|
| 11211 |
|
|
_bfd_error_handler (_("error: %B: Conflicting CPU architectures %d/%d"),
|
| 11212 |
|
|
ibfd, oldtag, newtag);
|
| 11213 |
|
|
return -1;
|
| 11214 |
|
|
}
|
| 11215 |
|
|
|
| 11216 |
|
|
return result;
|
| 11217 |
|
|
#undef T
|
| 11218 |
|
|
}
|
| 11219 |
|
|
|
| 11220 |
|
|
/* Merge EABI object attributes from IBFD into OBFD. Raise an error if there
|
| 11221 |
|
|
are conflicting attributes. */
|
| 11222 |
|
|
|
| 11223 |
|
|
static bfd_boolean
|
| 11224 |
|
|
elf32_arm_merge_eabi_attributes (bfd *ibfd, bfd *obfd)
|
| 11225 |
|
|
{
|
| 11226 |
|
|
obj_attribute *in_attr;
|
| 11227 |
|
|
obj_attribute *out_attr;
|
| 11228 |
|
|
/* Some tags have 0 = don't care, 1 = strong requirement,
|
| 11229 |
|
|
2 = weak requirement. */
|
| 11230 |
|
|
static const int order_021[3] = {0, 2, 1};
|
| 11231 |
|
|
int i;
|
| 11232 |
|
|
bfd_boolean result = TRUE;
|
| 11233 |
|
|
|
| 11234 |
|
|
/* Skip the linker stubs file. This preserves previous behavior
|
| 11235 |
|
|
of accepting unknown attributes in the first input file - but
|
| 11236 |
|
|
is that a bug? */
|
| 11237 |
|
|
if (ibfd->flags & BFD_LINKER_CREATED)
|
| 11238 |
|
|
return TRUE;
|
| 11239 |
|
|
|
| 11240 |
|
|
if (!elf_known_obj_attributes_proc (obfd)[0].i)
|
| 11241 |
|
|
{
|
| 11242 |
|
|
/* This is the first object. Copy the attributes. */
|
| 11243 |
|
|
_bfd_elf_copy_obj_attributes (ibfd, obfd);
|
| 11244 |
|
|
|
| 11245 |
|
|
out_attr = elf_known_obj_attributes_proc (obfd);
|
| 11246 |
|
|
|
| 11247 |
|
|
/* Use the Tag_null value to indicate the attributes have been
|
| 11248 |
|
|
initialized. */
|
| 11249 |
|
|
out_attr[0].i = 1;
|
| 11250 |
|
|
|
| 11251 |
|
|
/* We do not output objects with Tag_MPextension_use_legacy - we move
|
| 11252 |
|
|
the attribute's value to Tag_MPextension_use. */
|
| 11253 |
|
|
if (out_attr[Tag_MPextension_use_legacy].i != 0)
|
| 11254 |
|
|
{
|
| 11255 |
|
|
if (out_attr[Tag_MPextension_use].i != 0
|
| 11256 |
|
|
&& out_attr[Tag_MPextension_use_legacy].i
|
| 11257 |
|
|
!= out_attr[Tag_MPextension_use].i)
|
| 11258 |
|
|
{
|
| 11259 |
|
|
_bfd_error_handler
|
| 11260 |
|
|
(_("Error: %B has both the current and legacy "
|
| 11261 |
|
|
"Tag_MPextension_use attributes"), ibfd);
|
| 11262 |
|
|
result = FALSE;
|
| 11263 |
|
|
}
|
| 11264 |
|
|
|
| 11265 |
|
|
out_attr[Tag_MPextension_use] =
|
| 11266 |
|
|
out_attr[Tag_MPextension_use_legacy];
|
| 11267 |
|
|
out_attr[Tag_MPextension_use_legacy].type = 0;
|
| 11268 |
|
|
out_attr[Tag_MPextension_use_legacy].i = 0;
|
| 11269 |
|
|
}
|
| 11270 |
|
|
|
| 11271 |
|
|
return result;
|
| 11272 |
|
|
}
|
| 11273 |
|
|
|
| 11274 |
|
|
in_attr = elf_known_obj_attributes_proc (ibfd);
|
| 11275 |
|
|
out_attr = elf_known_obj_attributes_proc (obfd);
|
| 11276 |
|
|
/* This needs to happen before Tag_ABI_FP_number_model is merged. */
|
| 11277 |
|
|
if (in_attr[Tag_ABI_VFP_args].i != out_attr[Tag_ABI_VFP_args].i)
|
| 11278 |
|
|
{
|
| 11279 |
|
|
/* Ignore mismatches if the object doesn't use floating point. */
|
| 11280 |
|
|
if (out_attr[Tag_ABI_FP_number_model].i == 0)
|
| 11281 |
|
|
out_attr[Tag_ABI_VFP_args].i = in_attr[Tag_ABI_VFP_args].i;
|
| 11282 |
|
|
else if (in_attr[Tag_ABI_FP_number_model].i != 0)
|
| 11283 |
|
|
{
|
| 11284 |
|
|
_bfd_error_handler
|
| 11285 |
|
|
(_("error: %B uses VFP register arguments, %B does not"),
|
| 11286 |
|
|
in_attr[Tag_ABI_VFP_args].i ? ibfd : obfd,
|
| 11287 |
|
|
in_attr[Tag_ABI_VFP_args].i ? obfd : ibfd);
|
| 11288 |
|
|
result = FALSE;
|
| 11289 |
|
|
}
|
| 11290 |
|
|
}
|
| 11291 |
|
|
|
| 11292 |
|
|
for (i = LEAST_KNOWN_OBJ_ATTRIBUTE; i < NUM_KNOWN_OBJ_ATTRIBUTES; i++)
|
| 11293 |
|
|
{
|
| 11294 |
|
|
/* Merge this attribute with existing attributes. */
|
| 11295 |
|
|
switch (i)
|
| 11296 |
|
|
{
|
| 11297 |
|
|
case Tag_CPU_raw_name:
|
| 11298 |
|
|
case Tag_CPU_name:
|
| 11299 |
|
|
/* These are merged after Tag_CPU_arch. */
|
| 11300 |
|
|
break;
|
| 11301 |
|
|
|
| 11302 |
|
|
case Tag_ABI_optimization_goals:
|
| 11303 |
|
|
case Tag_ABI_FP_optimization_goals:
|
| 11304 |
|
|
/* Use the first value seen. */
|
| 11305 |
|
|
break;
|
| 11306 |
|
|
|
| 11307 |
|
|
case Tag_CPU_arch:
|
| 11308 |
|
|
{
|
| 11309 |
|
|
int secondary_compat = -1, secondary_compat_out = -1;
|
| 11310 |
|
|
unsigned int saved_out_attr = out_attr[i].i;
|
| 11311 |
|
|
static const char *name_table[] = {
|
| 11312 |
|
|
/* These aren't real CPU names, but we can't guess
|
| 11313 |
|
|
that from the architecture version alone. */
|
| 11314 |
|
|
"Pre v4",
|
| 11315 |
|
|
"ARM v4",
|
| 11316 |
|
|
"ARM v4T",
|
| 11317 |
|
|
"ARM v5T",
|
| 11318 |
|
|
"ARM v5TE",
|
| 11319 |
|
|
"ARM v5TEJ",
|
| 11320 |
|
|
"ARM v6",
|
| 11321 |
|
|
"ARM v6KZ",
|
| 11322 |
|
|
"ARM v6T2",
|
| 11323 |
|
|
"ARM v6K",
|
| 11324 |
|
|
"ARM v7",
|
| 11325 |
|
|
"ARM v6-M",
|
| 11326 |
|
|
"ARM v6S-M"
|
| 11327 |
|
|
};
|
| 11328 |
|
|
|
| 11329 |
|
|
/* Merge Tag_CPU_arch and Tag_also_compatible_with. */
|
| 11330 |
|
|
secondary_compat = get_secondary_compatible_arch (ibfd);
|
| 11331 |
|
|
secondary_compat_out = get_secondary_compatible_arch (obfd);
|
| 11332 |
|
|
out_attr[i].i = tag_cpu_arch_combine (ibfd, out_attr[i].i,
|
| 11333 |
|
|
&secondary_compat_out,
|
| 11334 |
|
|
in_attr[i].i,
|
| 11335 |
|
|
secondary_compat);
|
| 11336 |
|
|
set_secondary_compatible_arch (obfd, secondary_compat_out);
|
| 11337 |
|
|
|
| 11338 |
|
|
/* Merge Tag_CPU_name and Tag_CPU_raw_name. */
|
| 11339 |
|
|
if (out_attr[i].i == saved_out_attr)
|
| 11340 |
|
|
; /* Leave the names alone. */
|
| 11341 |
|
|
else if (out_attr[i].i == in_attr[i].i)
|
| 11342 |
|
|
{
|
| 11343 |
|
|
/* The output architecture has been changed to match the
|
| 11344 |
|
|
input architecture. Use the input names. */
|
| 11345 |
|
|
out_attr[Tag_CPU_name].s = in_attr[Tag_CPU_name].s
|
| 11346 |
|
|
? _bfd_elf_attr_strdup (obfd, in_attr[Tag_CPU_name].s)
|
| 11347 |
|
|
: NULL;
|
| 11348 |
|
|
out_attr[Tag_CPU_raw_name].s = in_attr[Tag_CPU_raw_name].s
|
| 11349 |
|
|
? _bfd_elf_attr_strdup (obfd, in_attr[Tag_CPU_raw_name].s)
|
| 11350 |
|
|
: NULL;
|
| 11351 |
|
|
}
|
| 11352 |
|
|
else
|
| 11353 |
|
|
{
|
| 11354 |
|
|
out_attr[Tag_CPU_name].s = NULL;
|
| 11355 |
|
|
out_attr[Tag_CPU_raw_name].s = NULL;
|
| 11356 |
|
|
}
|
| 11357 |
|
|
|
| 11358 |
|
|
/* If we still don't have a value for Tag_CPU_name,
|
| 11359 |
|
|
make one up now. Tag_CPU_raw_name remains blank. */
|
| 11360 |
|
|
if (out_attr[Tag_CPU_name].s == NULL
|
| 11361 |
|
|
&& out_attr[i].i < ARRAY_SIZE (name_table))
|
| 11362 |
|
|
out_attr[Tag_CPU_name].s =
|
| 11363 |
|
|
_bfd_elf_attr_strdup (obfd, name_table[out_attr[i].i]);
|
| 11364 |
|
|
}
|
| 11365 |
|
|
break;
|
| 11366 |
|
|
|
| 11367 |
|
|
case Tag_ARM_ISA_use:
|
| 11368 |
|
|
case Tag_THUMB_ISA_use:
|
| 11369 |
|
|
case Tag_WMMX_arch:
|
| 11370 |
|
|
case Tag_Advanced_SIMD_arch:
|
| 11371 |
|
|
/* ??? Do Advanced_SIMD (NEON) and WMMX conflict? */
|
| 11372 |
|
|
case Tag_ABI_FP_rounding:
|
| 11373 |
|
|
case Tag_ABI_FP_exceptions:
|
| 11374 |
|
|
case Tag_ABI_FP_user_exceptions:
|
| 11375 |
|
|
case Tag_ABI_FP_number_model:
|
| 11376 |
|
|
case Tag_FP_HP_extension:
|
| 11377 |
|
|
case Tag_CPU_unaligned_access:
|
| 11378 |
|
|
case Tag_T2EE_use:
|
| 11379 |
|
|
case Tag_MPextension_use:
|
| 11380 |
|
|
/* Use the largest value specified. */
|
| 11381 |
|
|
if (in_attr[i].i > out_attr[i].i)
|
| 11382 |
|
|
out_attr[i].i = in_attr[i].i;
|
| 11383 |
|
|
break;
|
| 11384 |
|
|
|
| 11385 |
|
|
case Tag_ABI_align_preserved:
|
| 11386 |
|
|
case Tag_ABI_PCS_RO_data:
|
| 11387 |
|
|
/* Use the smallest value specified. */
|
| 11388 |
|
|
if (in_attr[i].i < out_attr[i].i)
|
| 11389 |
|
|
out_attr[i].i = in_attr[i].i;
|
| 11390 |
|
|
break;
|
| 11391 |
|
|
|
| 11392 |
|
|
case Tag_ABI_align_needed:
|
| 11393 |
|
|
if ((in_attr[i].i > 0 || out_attr[i].i > 0)
|
| 11394 |
|
|
&& (in_attr[Tag_ABI_align_preserved].i == 0
|
| 11395 |
|
|
|| out_attr[Tag_ABI_align_preserved].i == 0))
|
| 11396 |
|
|
{
|
| 11397 |
|
|
/* This error message should be enabled once all non-conformant
|
| 11398 |
|
|
binaries in the toolchain have had the attributes set
|
| 11399 |
|
|
properly.
|
| 11400 |
|
|
_bfd_error_handler
|
| 11401 |
|
|
(_("error: %B: 8-byte data alignment conflicts with %B"),
|
| 11402 |
|
|
obfd, ibfd);
|
| 11403 |
|
|
result = FALSE; */
|
| 11404 |
|
|
}
|
| 11405 |
|
|
/* Fall through. */
|
| 11406 |
|
|
case Tag_ABI_FP_denormal:
|
| 11407 |
|
|
case Tag_ABI_PCS_GOT_use:
|
| 11408 |
|
|
/* Use the "greatest" from the sequence 0, 2, 1, or the largest
|
| 11409 |
|
|
value if greater than 2 (for future-proofing). */
|
| 11410 |
|
|
if ((in_attr[i].i > 2 && in_attr[i].i > out_attr[i].i)
|
| 11411 |
|
|
|| (in_attr[i].i <= 2 && out_attr[i].i <= 2
|
| 11412 |
|
|
&& order_021[in_attr[i].i] > order_021[out_attr[i].i]))
|
| 11413 |
|
|
out_attr[i].i = in_attr[i].i;
|
| 11414 |
|
|
break;
|
| 11415 |
|
|
|
| 11416 |
|
|
case Tag_Virtualization_use:
|
| 11417 |
|
|
/* The virtualization tag effectively stores two bits of
|
| 11418 |
|
|
information: the intended use of TrustZone (in bit 0), and the
|
| 11419 |
|
|
intended use of Virtualization (in bit 1). */
|
| 11420 |
|
|
if (out_attr[i].i == 0)
|
| 11421 |
|
|
out_attr[i].i = in_attr[i].i;
|
| 11422 |
|
|
else if (in_attr[i].i != 0
|
| 11423 |
|
|
&& in_attr[i].i != out_attr[i].i)
|
| 11424 |
|
|
{
|
| 11425 |
|
|
if (in_attr[i].i <= 3 && out_attr[i].i <= 3)
|
| 11426 |
|
|
out_attr[i].i = 3;
|
| 11427 |
|
|
else
|
| 11428 |
|
|
{
|
| 11429 |
|
|
_bfd_error_handler
|
| 11430 |
|
|
(_("error: %B: unable to merge virtualization attributes "
|
| 11431 |
|
|
"with %B"),
|
| 11432 |
|
|
obfd, ibfd);
|
| 11433 |
|
|
result = FALSE;
|
| 11434 |
|
|
}
|
| 11435 |
|
|
}
|
| 11436 |
|
|
break;
|
| 11437 |
|
|
|
| 11438 |
|
|
case Tag_CPU_arch_profile:
|
| 11439 |
|
|
if (out_attr[i].i != in_attr[i].i)
|
| 11440 |
|
|
{
|
| 11441 |
|
|
/* 0 will merge with anything.
|
| 11442 |
|
|
'A' and 'S' merge to 'A'.
|
| 11443 |
|
|
'R' and 'S' merge to 'R'.
|
| 11444 |
|
|
'M' and 'A|R|S' is an error. */
|
| 11445 |
|
|
if (out_attr[i].i == 0
|
| 11446 |
|
|
|| (out_attr[i].i == 'S'
|
| 11447 |
|
|
&& (in_attr[i].i == 'A' || in_attr[i].i == 'R')))
|
| 11448 |
|
|
out_attr[i].i = in_attr[i].i;
|
| 11449 |
|
|
else if (in_attr[i].i == 0
|
| 11450 |
|
|
|| (in_attr[i].i == 'S'
|
| 11451 |
|
|
&& (out_attr[i].i == 'A' || out_attr[i].i == 'R')))
|
| 11452 |
|
|
; /* Do nothing. */
|
| 11453 |
|
|
else
|
| 11454 |
|
|
{
|
| 11455 |
|
|
_bfd_error_handler
|
| 11456 |
|
|
(_("error: %B: Conflicting architecture profiles %c/%c"),
|
| 11457 |
|
|
ibfd,
|
| 11458 |
|
|
in_attr[i].i ? in_attr[i].i : '0',
|
| 11459 |
|
|
out_attr[i].i ? out_attr[i].i : '0');
|
| 11460 |
|
|
result = FALSE;
|
| 11461 |
|
|
}
|
| 11462 |
|
|
}
|
| 11463 |
|
|
break;
|
| 11464 |
|
|
case Tag_FP_arch:
|
| 11465 |
|
|
{
|
| 11466 |
|
|
/* Tag_ABI_HardFP_use is handled along with Tag_FP_arch since
|
| 11467 |
|
|
the meaning of Tag_ABI_HardFP_use depends on Tag_FP_arch
|
| 11468 |
|
|
when it's 0. It might mean absence of FP hardware if
|
| 11469 |
|
|
Tag_FP_arch is zero, otherwise it is effectively SP + DP. */
|
| 11470 |
|
|
|
| 11471 |
|
|
static const struct
|
| 11472 |
|
|
{
|
| 11473 |
|
|
int ver;
|
| 11474 |
|
|
int regs;
|
| 11475 |
|
|
} vfp_versions[7] =
|
| 11476 |
|
|
{
|
| 11477 |
|
|
{0, 0},
|
| 11478 |
|
|
{1, 16},
|
| 11479 |
|
|
{2, 16},
|
| 11480 |
|
|
{3, 32},
|
| 11481 |
|
|
{3, 16},
|
| 11482 |
|
|
{4, 32},
|
| 11483 |
|
|
{4, 16}
|
| 11484 |
|
|
};
|
| 11485 |
|
|
int ver;
|
| 11486 |
|
|
int regs;
|
| 11487 |
|
|
int newval;
|
| 11488 |
|
|
|
| 11489 |
|
|
/* If the output has no requirement about FP hardware,
|
| 11490 |
|
|
follow the requirement of the input. */
|
| 11491 |
|
|
if (out_attr[i].i == 0)
|
| 11492 |
|
|
{
|
| 11493 |
|
|
BFD_ASSERT (out_attr[Tag_ABI_HardFP_use].i == 0);
|
| 11494 |
|
|
out_attr[i].i = in_attr[i].i;
|
| 11495 |
|
|
out_attr[Tag_ABI_HardFP_use].i
|
| 11496 |
|
|
= in_attr[Tag_ABI_HardFP_use].i;
|
| 11497 |
|
|
break;
|
| 11498 |
|
|
}
|
| 11499 |
|
|
/* If the input has no requirement about FP hardware, do
|
| 11500 |
|
|
nothing. */
|
| 11501 |
|
|
else if (in_attr[i].i == 0)
|
| 11502 |
|
|
{
|
| 11503 |
|
|
BFD_ASSERT (in_attr[Tag_ABI_HardFP_use].i == 0);
|
| 11504 |
|
|
break;
|
| 11505 |
|
|
}
|
| 11506 |
|
|
|
| 11507 |
|
|
/* Both the input and the output have nonzero Tag_FP_arch.
|
| 11508 |
|
|
So Tag_ABI_HardFP_use is (SP & DP) when it's zero. */
|
| 11509 |
|
|
|
| 11510 |
|
|
/* If both the input and the output have zero Tag_ABI_HardFP_use,
|
| 11511 |
|
|
do nothing. */
|
| 11512 |
|
|
if (in_attr[Tag_ABI_HardFP_use].i == 0
|
| 11513 |
|
|
&& out_attr[Tag_ABI_HardFP_use].i == 0)
|
| 11514 |
|
|
;
|
| 11515 |
|
|
/* If the input and the output have different Tag_ABI_HardFP_use,
|
| 11516 |
|
|
the combination of them is 3 (SP & DP). */
|
| 11517 |
|
|
else if (in_attr[Tag_ABI_HardFP_use].i
|
| 11518 |
|
|
!= out_attr[Tag_ABI_HardFP_use].i)
|
| 11519 |
|
|
out_attr[Tag_ABI_HardFP_use].i = 3;
|
| 11520 |
|
|
|
| 11521 |
|
|
/* Now we can handle Tag_FP_arch. */
|
| 11522 |
|
|
|
| 11523 |
|
|
/* Values greater than 6 aren't defined, so just pick the
|
| 11524 |
|
|
biggest */
|
| 11525 |
|
|
if (in_attr[i].i > 6 && in_attr[i].i > out_attr[i].i)
|
| 11526 |
|
|
{
|
| 11527 |
|
|
out_attr[i] = in_attr[i];
|
| 11528 |
|
|
break;
|
| 11529 |
|
|
}
|
| 11530 |
|
|
/* The output uses the superset of input features
|
| 11531 |
|
|
(ISA version) and registers. */
|
| 11532 |
|
|
ver = vfp_versions[in_attr[i].i].ver;
|
| 11533 |
|
|
if (ver < vfp_versions[out_attr[i].i].ver)
|
| 11534 |
|
|
ver = vfp_versions[out_attr[i].i].ver;
|
| 11535 |
|
|
regs = vfp_versions[in_attr[i].i].regs;
|
| 11536 |
|
|
if (regs < vfp_versions[out_attr[i].i].regs)
|
| 11537 |
|
|
regs = vfp_versions[out_attr[i].i].regs;
|
| 11538 |
|
|
/* This assumes all possible supersets are also a valid
|
| 11539 |
|
|
options. */
|
| 11540 |
|
|
for (newval = 6; newval > 0; newval--)
|
| 11541 |
|
|
{
|
| 11542 |
|
|
if (regs == vfp_versions[newval].regs
|
| 11543 |
|
|
&& ver == vfp_versions[newval].ver)
|
| 11544 |
|
|
break;
|
| 11545 |
|
|
}
|
| 11546 |
|
|
out_attr[i].i = newval;
|
| 11547 |
|
|
}
|
| 11548 |
|
|
break;
|
| 11549 |
|
|
case Tag_PCS_config:
|
| 11550 |
|
|
if (out_attr[i].i == 0)
|
| 11551 |
|
|
out_attr[i].i = in_attr[i].i;
|
| 11552 |
163 |
khays |
else if (in_attr[i].i != 0 && out_attr[i].i != in_attr[i].i)
|
| 11553 |
14 |
khays |
{
|
| 11554 |
|
|
/* It's sometimes ok to mix different configs, so this is only
|
| 11555 |
|
|
a warning. */
|
| 11556 |
|
|
_bfd_error_handler
|
| 11557 |
|
|
(_("Warning: %B: Conflicting platform configuration"), ibfd);
|
| 11558 |
|
|
}
|
| 11559 |
|
|
break;
|
| 11560 |
|
|
case Tag_ABI_PCS_R9_use:
|
| 11561 |
|
|
if (in_attr[i].i != out_attr[i].i
|
| 11562 |
|
|
&& out_attr[i].i != AEABI_R9_unused
|
| 11563 |
|
|
&& in_attr[i].i != AEABI_R9_unused)
|
| 11564 |
|
|
{
|
| 11565 |
|
|
_bfd_error_handler
|
| 11566 |
|
|
(_("error: %B: Conflicting use of R9"), ibfd);
|
| 11567 |
|
|
result = FALSE;
|
| 11568 |
|
|
}
|
| 11569 |
|
|
if (out_attr[i].i == AEABI_R9_unused)
|
| 11570 |
|
|
out_attr[i].i = in_attr[i].i;
|
| 11571 |
|
|
break;
|
| 11572 |
|
|
case Tag_ABI_PCS_RW_data:
|
| 11573 |
|
|
if (in_attr[i].i == AEABI_PCS_RW_data_SBrel
|
| 11574 |
|
|
&& out_attr[Tag_ABI_PCS_R9_use].i != AEABI_R9_SB
|
| 11575 |
|
|
&& out_attr[Tag_ABI_PCS_R9_use].i != AEABI_R9_unused)
|
| 11576 |
|
|
{
|
| 11577 |
|
|
_bfd_error_handler
|
| 11578 |
|
|
(_("error: %B: SB relative addressing conflicts with use of R9"),
|
| 11579 |
|
|
ibfd);
|
| 11580 |
|
|
result = FALSE;
|
| 11581 |
|
|
}
|
| 11582 |
|
|
/* Use the smallest value specified. */
|
| 11583 |
|
|
if (in_attr[i].i < out_attr[i].i)
|
| 11584 |
|
|
out_attr[i].i = in_attr[i].i;
|
| 11585 |
|
|
break;
|
| 11586 |
|
|
case Tag_ABI_PCS_wchar_t:
|
| 11587 |
|
|
if (out_attr[i].i && in_attr[i].i && out_attr[i].i != in_attr[i].i
|
| 11588 |
|
|
&& !elf_arm_tdata (obfd)->no_wchar_size_warning)
|
| 11589 |
|
|
{
|
| 11590 |
|
|
_bfd_error_handler
|
| 11591 |
|
|
(_("warning: %B uses %u-byte wchar_t yet the output is to use %u-byte wchar_t; use of wchar_t values across objects may fail"),
|
| 11592 |
|
|
ibfd, in_attr[i].i, out_attr[i].i);
|
| 11593 |
|
|
}
|
| 11594 |
|
|
else if (in_attr[i].i && !out_attr[i].i)
|
| 11595 |
|
|
out_attr[i].i = in_attr[i].i;
|
| 11596 |
|
|
break;
|
| 11597 |
|
|
case Tag_ABI_enum_size:
|
| 11598 |
|
|
if (in_attr[i].i != AEABI_enum_unused)
|
| 11599 |
|
|
{
|
| 11600 |
|
|
if (out_attr[i].i == AEABI_enum_unused
|
| 11601 |
|
|
|| out_attr[i].i == AEABI_enum_forced_wide)
|
| 11602 |
|
|
{
|
| 11603 |
|
|
/* The existing object is compatible with anything.
|
| 11604 |
|
|
Use whatever requirements the new object has. */
|
| 11605 |
|
|
out_attr[i].i = in_attr[i].i;
|
| 11606 |
|
|
}
|
| 11607 |
|
|
else if (in_attr[i].i != AEABI_enum_forced_wide
|
| 11608 |
|
|
&& out_attr[i].i != in_attr[i].i
|
| 11609 |
|
|
&& !elf_arm_tdata (obfd)->no_enum_size_warning)
|
| 11610 |
|
|
{
|
| 11611 |
|
|
static const char *aeabi_enum_names[] =
|
| 11612 |
|
|
{ "", "variable-size", "32-bit", "" };
|
| 11613 |
|
|
const char *in_name =
|
| 11614 |
|
|
in_attr[i].i < ARRAY_SIZE(aeabi_enum_names)
|
| 11615 |
|
|
? aeabi_enum_names[in_attr[i].i]
|
| 11616 |
|
|
: "<unknown>";
|
| 11617 |
|
|
const char *out_name =
|
| 11618 |
|
|
out_attr[i].i < ARRAY_SIZE(aeabi_enum_names)
|
| 11619 |
|
|
? aeabi_enum_names[out_attr[i].i]
|
| 11620 |
|
|
: "<unknown>";
|
| 11621 |
|
|
_bfd_error_handler
|
| 11622 |
|
|
(_("warning: %B uses %s enums yet the output is to use %s enums; use of enum values across objects may fail"),
|
| 11623 |
|
|
ibfd, in_name, out_name);
|
| 11624 |
|
|
}
|
| 11625 |
|
|
}
|
| 11626 |
|
|
break;
|
| 11627 |
|
|
case Tag_ABI_VFP_args:
|
| 11628 |
|
|
/* Aready done. */
|
| 11629 |
|
|
break;
|
| 11630 |
|
|
case Tag_ABI_WMMX_args:
|
| 11631 |
|
|
if (in_attr[i].i != out_attr[i].i)
|
| 11632 |
|
|
{
|
| 11633 |
|
|
_bfd_error_handler
|
| 11634 |
|
|
(_("error: %B uses iWMMXt register arguments, %B does not"),
|
| 11635 |
|
|
ibfd, obfd);
|
| 11636 |
|
|
result = FALSE;
|
| 11637 |
|
|
}
|
| 11638 |
|
|
break;
|
| 11639 |
|
|
case Tag_compatibility:
|
| 11640 |
|
|
/* Merged in target-independent code. */
|
| 11641 |
|
|
break;
|
| 11642 |
|
|
case Tag_ABI_HardFP_use:
|
| 11643 |
|
|
/* This is handled along with Tag_FP_arch. */
|
| 11644 |
|
|
break;
|
| 11645 |
|
|
case Tag_ABI_FP_16bit_format:
|
| 11646 |
|
|
if (in_attr[i].i != 0 && out_attr[i].i != 0)
|
| 11647 |
|
|
{
|
| 11648 |
|
|
if (in_attr[i].i != out_attr[i].i)
|
| 11649 |
|
|
{
|
| 11650 |
|
|
_bfd_error_handler
|
| 11651 |
|
|
(_("error: fp16 format mismatch between %B and %B"),
|
| 11652 |
|
|
ibfd, obfd);
|
| 11653 |
|
|
result = FALSE;
|
| 11654 |
|
|
}
|
| 11655 |
|
|
}
|
| 11656 |
|
|
if (in_attr[i].i != 0)
|
| 11657 |
|
|
out_attr[i].i = in_attr[i].i;
|
| 11658 |
|
|
break;
|
| 11659 |
|
|
|
| 11660 |
|
|
case Tag_DIV_use:
|
| 11661 |
|
|
/* This tag is set to zero if we can use UDIV and SDIV in Thumb
|
| 11662 |
|
|
mode on a v7-M or v7-R CPU; to one if we can not use UDIV or
|
| 11663 |
|
|
SDIV at all; and to two if we can use UDIV or SDIV on a v7-A
|
| 11664 |
|
|
CPU. We will merge as follows: If the input attribute's value
|
| 11665 |
|
|
is one then the output attribute's value remains unchanged. If
|
| 11666 |
|
|
the input attribute's value is zero or two then if the output
|
| 11667 |
|
|
attribute's value is one the output value is set to the input
|
| 11668 |
|
|
value, otherwise the output value must be the same as the
|
| 11669 |
|
|
inputs. */
|
| 11670 |
|
|
if (in_attr[i].i != 1 && out_attr[i].i != 1)
|
| 11671 |
|
|
{
|
| 11672 |
|
|
if (in_attr[i].i != out_attr[i].i)
|
| 11673 |
|
|
{
|
| 11674 |
|
|
_bfd_error_handler
|
| 11675 |
|
|
(_("DIV usage mismatch between %B and %B"),
|
| 11676 |
|
|
ibfd, obfd);
|
| 11677 |
|
|
result = FALSE;
|
| 11678 |
|
|
}
|
| 11679 |
|
|
}
|
| 11680 |
|
|
|
| 11681 |
|
|
if (in_attr[i].i != 1)
|
| 11682 |
|
|
out_attr[i].i = in_attr[i].i;
|
| 11683 |
|
|
|
| 11684 |
|
|
break;
|
| 11685 |
|
|
|
| 11686 |
|
|
case Tag_MPextension_use_legacy:
|
| 11687 |
|
|
/* We don't output objects with Tag_MPextension_use_legacy - we
|
| 11688 |
|
|
move the value to Tag_MPextension_use. */
|
| 11689 |
|
|
if (in_attr[i].i != 0 && in_attr[Tag_MPextension_use].i != 0)
|
| 11690 |
|
|
{
|
| 11691 |
|
|
if (in_attr[Tag_MPextension_use].i != in_attr[i].i)
|
| 11692 |
|
|
{
|
| 11693 |
|
|
_bfd_error_handler
|
| 11694 |
|
|
(_("%B has has both the current and legacy "
|
| 11695 |
|
|
"Tag_MPextension_use attributes"),
|
| 11696 |
|
|
ibfd);
|
| 11697 |
|
|
result = FALSE;
|
| 11698 |
|
|
}
|
| 11699 |
|
|
}
|
| 11700 |
|
|
|
| 11701 |
|
|
if (in_attr[i].i > out_attr[Tag_MPextension_use].i)
|
| 11702 |
|
|
out_attr[Tag_MPextension_use] = in_attr[i];
|
| 11703 |
|
|
|
| 11704 |
|
|
break;
|
| 11705 |
|
|
|
| 11706 |
|
|
case Tag_nodefaults:
|
| 11707 |
|
|
/* This tag is set if it exists, but the value is unused (and is
|
| 11708 |
|
|
typically zero). We don't actually need to do anything here -
|
| 11709 |
|
|
the merge happens automatically when the type flags are merged
|
| 11710 |
|
|
below. */
|
| 11711 |
|
|
break;
|
| 11712 |
|
|
case Tag_also_compatible_with:
|
| 11713 |
|
|
/* Already done in Tag_CPU_arch. */
|
| 11714 |
|
|
break;
|
| 11715 |
|
|
case Tag_conformance:
|
| 11716 |
|
|
/* Keep the attribute if it matches. Throw it away otherwise.
|
| 11717 |
|
|
No attribute means no claim to conform. */
|
| 11718 |
|
|
if (!in_attr[i].s || !out_attr[i].s
|
| 11719 |
|
|
|| strcmp (in_attr[i].s, out_attr[i].s) != 0)
|
| 11720 |
|
|
out_attr[i].s = NULL;
|
| 11721 |
|
|
break;
|
| 11722 |
|
|
|
| 11723 |
|
|
default:
|
| 11724 |
|
|
result
|
| 11725 |
|
|
= result && _bfd_elf_merge_unknown_attribute_low (ibfd, obfd, i);
|
| 11726 |
|
|
}
|
| 11727 |
|
|
|
| 11728 |
|
|
/* If out_attr was copied from in_attr then it won't have a type yet. */
|
| 11729 |
|
|
if (in_attr[i].type && !out_attr[i].type)
|
| 11730 |
|
|
out_attr[i].type = in_attr[i].type;
|
| 11731 |
|
|
}
|
| 11732 |
|
|
|
| 11733 |
|
|
/* Merge Tag_compatibility attributes and any common GNU ones. */
|
| 11734 |
|
|
if (!_bfd_elf_merge_object_attributes (ibfd, obfd))
|
| 11735 |
|
|
return FALSE;
|
| 11736 |
|
|
|
| 11737 |
|
|
/* Check for any attributes not known on ARM. */
|
| 11738 |
|
|
result &= _bfd_elf_merge_unknown_attribute_list (ibfd, obfd);
|
| 11739 |
|
|
|
| 11740 |
|
|
return result;
|
| 11741 |
|
|
}
|
| 11742 |
|
|
|
| 11743 |
|
|
|
| 11744 |
|
|
/* Return TRUE if the two EABI versions are incompatible. */
|
| 11745 |
|
|
|
| 11746 |
|
|
static bfd_boolean
|
| 11747 |
|
|
elf32_arm_versions_compatible (unsigned iver, unsigned over)
|
| 11748 |
|
|
{
|
| 11749 |
|
|
/* v4 and v5 are the same spec before and after it was released,
|
| 11750 |
|
|
so allow mixing them. */
|
| 11751 |
|
|
if ((iver == EF_ARM_EABI_VER4 && over == EF_ARM_EABI_VER5)
|
| 11752 |
|
|
|| (iver == EF_ARM_EABI_VER5 && over == EF_ARM_EABI_VER4))
|
| 11753 |
|
|
return TRUE;
|
| 11754 |
|
|
|
| 11755 |
|
|
return (iver == over);
|
| 11756 |
|
|
}
|
| 11757 |
|
|
|
| 11758 |
|
|
/* Merge backend specific data from an object file to the output
|
| 11759 |
|
|
object file when linking. */
|
| 11760 |
|
|
|
| 11761 |
|
|
static bfd_boolean
|
| 11762 |
|
|
elf32_arm_merge_private_bfd_data (bfd * ibfd, bfd * obfd);
|
| 11763 |
|
|
|
| 11764 |
|
|
/* Display the flags field. */
|
| 11765 |
|
|
|
| 11766 |
|
|
static bfd_boolean
|
| 11767 |
|
|
elf32_arm_print_private_bfd_data (bfd *abfd, void * ptr)
|
| 11768 |
|
|
{
|
| 11769 |
|
|
FILE * file = (FILE *) ptr;
|
| 11770 |
|
|
unsigned long flags;
|
| 11771 |
|
|
|
| 11772 |
|
|
BFD_ASSERT (abfd != NULL && ptr != NULL);
|
| 11773 |
|
|
|
| 11774 |
|
|
/* Print normal ELF private data. */
|
| 11775 |
|
|
_bfd_elf_print_private_bfd_data (abfd, ptr);
|
| 11776 |
|
|
|
| 11777 |
|
|
flags = elf_elfheader (abfd)->e_flags;
|
| 11778 |
|
|
/* Ignore init flag - it may not be set, despite the flags field
|
| 11779 |
|
|
containing valid data. */
|
| 11780 |
|
|
|
| 11781 |
|
|
/* xgettext:c-format */
|
| 11782 |
|
|
fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags);
|
| 11783 |
|
|
|
| 11784 |
|
|
switch (EF_ARM_EABI_VERSION (flags))
|
| 11785 |
|
|
{
|
| 11786 |
|
|
case EF_ARM_EABI_UNKNOWN:
|
| 11787 |
|
|
/* The following flag bits are GNU extensions and not part of the
|
| 11788 |
|
|
official ARM ELF extended ABI. Hence they are only decoded if
|
| 11789 |
|
|
the EABI version is not set. */
|
| 11790 |
|
|
if (flags & EF_ARM_INTERWORK)
|
| 11791 |
|
|
fprintf (file, _(" [interworking enabled]"));
|
| 11792 |
|
|
|
| 11793 |
|
|
if (flags & EF_ARM_APCS_26)
|
| 11794 |
|
|
fprintf (file, " [APCS-26]");
|
| 11795 |
|
|
else
|
| 11796 |
|
|
fprintf (file, " [APCS-32]");
|
| 11797 |
|
|
|
| 11798 |
|
|
if (flags & EF_ARM_VFP_FLOAT)
|
| 11799 |
|
|
fprintf (file, _(" [VFP float format]"));
|
| 11800 |
|
|
else if (flags & EF_ARM_MAVERICK_FLOAT)
|
| 11801 |
|
|
fprintf (file, _(" [Maverick float format]"));
|
| 11802 |
|
|
else
|
| 11803 |
|
|
fprintf (file, _(" [FPA float format]"));
|
| 11804 |
|
|
|
| 11805 |
|
|
if (flags & EF_ARM_APCS_FLOAT)
|
| 11806 |
|
|
fprintf (file, _(" [floats passed in float registers]"));
|
| 11807 |
|
|
|
| 11808 |
|
|
if (flags & EF_ARM_PIC)
|
| 11809 |
|
|
fprintf (file, _(" [position independent]"));
|
| 11810 |
|
|
|
| 11811 |
|
|
if (flags & EF_ARM_NEW_ABI)
|
| 11812 |
|
|
fprintf (file, _(" [new ABI]"));
|
| 11813 |
|
|
|
| 11814 |
|
|
if (flags & EF_ARM_OLD_ABI)
|
| 11815 |
|
|
fprintf (file, _(" [old ABI]"));
|
| 11816 |
|
|
|
| 11817 |
|
|
if (flags & EF_ARM_SOFT_FLOAT)
|
| 11818 |
|
|
fprintf (file, _(" [software FP]"));
|
| 11819 |
|
|
|
| 11820 |
|
|
flags &= ~(EF_ARM_INTERWORK | EF_ARM_APCS_26 | EF_ARM_APCS_FLOAT
|
| 11821 |
|
|
| EF_ARM_PIC | EF_ARM_NEW_ABI | EF_ARM_OLD_ABI
|
| 11822 |
|
|
| EF_ARM_SOFT_FLOAT | EF_ARM_VFP_FLOAT
|
| 11823 |
|
|
| EF_ARM_MAVERICK_FLOAT);
|
| 11824 |
|
|
break;
|
| 11825 |
|
|
|
| 11826 |
|
|
case EF_ARM_EABI_VER1:
|
| 11827 |
|
|
fprintf (file, _(" [Version1 EABI]"));
|
| 11828 |
|
|
|
| 11829 |
|
|
if (flags & EF_ARM_SYMSARESORTED)
|
| 11830 |
|
|
fprintf (file, _(" [sorted symbol table]"));
|
| 11831 |
|
|
else
|
| 11832 |
|
|
fprintf (file, _(" [unsorted symbol table]"));
|
| 11833 |
|
|
|
| 11834 |
|
|
flags &= ~ EF_ARM_SYMSARESORTED;
|
| 11835 |
|
|
break;
|
| 11836 |
|
|
|
| 11837 |
|
|
case EF_ARM_EABI_VER2:
|
| 11838 |
|
|
fprintf (file, _(" [Version2 EABI]"));
|
| 11839 |
|
|
|
| 11840 |
|
|
if (flags & EF_ARM_SYMSARESORTED)
|
| 11841 |
|
|
fprintf (file, _(" [sorted symbol table]"));
|
| 11842 |
|
|
else
|
| 11843 |
|
|
fprintf (file, _(" [unsorted symbol table]"));
|
| 11844 |
|
|
|
| 11845 |
|
|
if (flags & EF_ARM_DYNSYMSUSESEGIDX)
|
| 11846 |
|
|
fprintf (file, _(" [dynamic symbols use segment index]"));
|
| 11847 |
|
|
|
| 11848 |
|
|
if (flags & EF_ARM_MAPSYMSFIRST)
|
| 11849 |
|
|
fprintf (file, _(" [mapping symbols precede others]"));
|
| 11850 |
|
|
|
| 11851 |
|
|
flags &= ~(EF_ARM_SYMSARESORTED | EF_ARM_DYNSYMSUSESEGIDX
|
| 11852 |
|
|
| EF_ARM_MAPSYMSFIRST);
|
| 11853 |
|
|
break;
|
| 11854 |
|
|
|
| 11855 |
|
|
case EF_ARM_EABI_VER3:
|
| 11856 |
|
|
fprintf (file, _(" [Version3 EABI]"));
|
| 11857 |
|
|
break;
|
| 11858 |
|
|
|
| 11859 |
|
|
case EF_ARM_EABI_VER4:
|
| 11860 |
|
|
fprintf (file, _(" [Version4 EABI]"));
|
| 11861 |
|
|
goto eabi;
|
| 11862 |
|
|
|
| 11863 |
|
|
case EF_ARM_EABI_VER5:
|
| 11864 |
|
|
fprintf (file, _(" [Version5 EABI]"));
|
| 11865 |
|
|
eabi:
|
| 11866 |
|
|
if (flags & EF_ARM_BE8)
|
| 11867 |
|
|
fprintf (file, _(" [BE8]"));
|
| 11868 |
|
|
|
| 11869 |
|
|
if (flags & EF_ARM_LE8)
|
| 11870 |
|
|
fprintf (file, _(" [LE8]"));
|
| 11871 |
|
|
|
| 11872 |
|
|
flags &= ~(EF_ARM_LE8 | EF_ARM_BE8);
|
| 11873 |
|
|
break;
|
| 11874 |
|
|
|
| 11875 |
|
|
default:
|
| 11876 |
|
|
fprintf (file, _(" <EABI version unrecognised>"));
|
| 11877 |
|
|
break;
|
| 11878 |
|
|
}
|
| 11879 |
|
|
|
| 11880 |
|
|
flags &= ~ EF_ARM_EABIMASK;
|
| 11881 |
|
|
|
| 11882 |
|
|
if (flags & EF_ARM_RELEXEC)
|
| 11883 |
|
|
fprintf (file, _(" [relocatable executable]"));
|
| 11884 |
|
|
|
| 11885 |
|
|
if (flags & EF_ARM_HASENTRY)
|
| 11886 |
|
|
fprintf (file, _(" [has entry point]"));
|
| 11887 |
|
|
|
| 11888 |
|
|
flags &= ~ (EF_ARM_RELEXEC | EF_ARM_HASENTRY);
|
| 11889 |
|
|
|
| 11890 |
|
|
if (flags)
|
| 11891 |
|
|
fprintf (file, _("<Unrecognised flag bits set>"));
|
| 11892 |
|
|
|
| 11893 |
|
|
fputc ('\n', file);
|
| 11894 |
|
|
|
| 11895 |
|
|
return TRUE;
|
| 11896 |
|
|
}
|
| 11897 |
|
|
|
| 11898 |
|
|
static int
|
| 11899 |
|
|
elf32_arm_get_symbol_type (Elf_Internal_Sym * elf_sym, int type)
|
| 11900 |
|
|
{
|
| 11901 |
|
|
switch (ELF_ST_TYPE (elf_sym->st_info))
|
| 11902 |
|
|
{
|
| 11903 |
|
|
case STT_ARM_TFUNC:
|
| 11904 |
|
|
return ELF_ST_TYPE (elf_sym->st_info);
|
| 11905 |
|
|
|
| 11906 |
|
|
case STT_ARM_16BIT:
|
| 11907 |
|
|
/* If the symbol is not an object, return the STT_ARM_16BIT flag.
|
| 11908 |
|
|
This allows us to distinguish between data used by Thumb instructions
|
| 11909 |
|
|
and non-data (which is probably code) inside Thumb regions of an
|
| 11910 |
|
|
executable. */
|
| 11911 |
|
|
if (type != STT_OBJECT && type != STT_TLS)
|
| 11912 |
|
|
return ELF_ST_TYPE (elf_sym->st_info);
|
| 11913 |
|
|
break;
|
| 11914 |
|
|
|
| 11915 |
|
|
default:
|
| 11916 |
|
|
break;
|
| 11917 |
|
|
}
|
| 11918 |
|
|
|
| 11919 |
|
|
return type;
|
| 11920 |
|
|
}
|
| 11921 |
|
|
|
| 11922 |
|
|
static asection *
|
| 11923 |
|
|
elf32_arm_gc_mark_hook (asection *sec,
|
| 11924 |
|
|
struct bfd_link_info *info,
|
| 11925 |
|
|
Elf_Internal_Rela *rel,
|
| 11926 |
|
|
struct elf_link_hash_entry *h,
|
| 11927 |
|
|
Elf_Internal_Sym *sym)
|
| 11928 |
|
|
{
|
| 11929 |
|
|
if (h != NULL)
|
| 11930 |
|
|
switch (ELF32_R_TYPE (rel->r_info))
|
| 11931 |
|
|
{
|
| 11932 |
|
|
case R_ARM_GNU_VTINHERIT:
|
| 11933 |
|
|
case R_ARM_GNU_VTENTRY:
|
| 11934 |
|
|
return NULL;
|
| 11935 |
|
|
}
|
| 11936 |
|
|
|
| 11937 |
|
|
return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
|
| 11938 |
|
|
}
|
| 11939 |
|
|
|
| 11940 |
|
|
/* Update the got entry reference counts for the section being removed. */
|
| 11941 |
|
|
|
| 11942 |
|
|
static bfd_boolean
|
| 11943 |
|
|
elf32_arm_gc_sweep_hook (bfd * abfd,
|
| 11944 |
|
|
struct bfd_link_info * info,
|
| 11945 |
|
|
asection * sec,
|
| 11946 |
|
|
const Elf_Internal_Rela * relocs)
|
| 11947 |
|
|
{
|
| 11948 |
|
|
Elf_Internal_Shdr *symtab_hdr;
|
| 11949 |
|
|
struct elf_link_hash_entry **sym_hashes;
|
| 11950 |
|
|
bfd_signed_vma *local_got_refcounts;
|
| 11951 |
|
|
const Elf_Internal_Rela *rel, *relend;
|
| 11952 |
|
|
struct elf32_arm_link_hash_table * globals;
|
| 11953 |
|
|
|
| 11954 |
|
|
if (info->relocatable)
|
| 11955 |
|
|
return TRUE;
|
| 11956 |
|
|
|
| 11957 |
|
|
globals = elf32_arm_hash_table (info);
|
| 11958 |
|
|
if (globals == NULL)
|
| 11959 |
|
|
return FALSE;
|
| 11960 |
|
|
|
| 11961 |
|
|
elf_section_data (sec)->local_dynrel = NULL;
|
| 11962 |
|
|
|
| 11963 |
|
|
symtab_hdr = & elf_symtab_hdr (abfd);
|
| 11964 |
|
|
sym_hashes = elf_sym_hashes (abfd);
|
| 11965 |
|
|
local_got_refcounts = elf_local_got_refcounts (abfd);
|
| 11966 |
|
|
|
| 11967 |
|
|
check_use_blx (globals);
|
| 11968 |
|
|
|
| 11969 |
|
|
relend = relocs + sec->reloc_count;
|
| 11970 |
|
|
for (rel = relocs; rel < relend; rel++)
|
| 11971 |
|
|
{
|
| 11972 |
|
|
unsigned long r_symndx;
|
| 11973 |
|
|
struct elf_link_hash_entry *h = NULL;
|
| 11974 |
|
|
struct elf32_arm_link_hash_entry *eh;
|
| 11975 |
|
|
int r_type;
|
| 11976 |
|
|
bfd_boolean call_reloc_p;
|
| 11977 |
|
|
bfd_boolean may_become_dynamic_p;
|
| 11978 |
|
|
bfd_boolean may_need_local_target_p;
|
| 11979 |
|
|
union gotplt_union *root_plt;
|
| 11980 |
|
|
struct arm_plt_info *arm_plt;
|
| 11981 |
|
|
|
| 11982 |
|
|
r_symndx = ELF32_R_SYM (rel->r_info);
|
| 11983 |
|
|
if (r_symndx >= symtab_hdr->sh_info)
|
| 11984 |
|
|
{
|
| 11985 |
|
|
h = sym_hashes[r_symndx - symtab_hdr->sh_info];
|
| 11986 |
|
|
while (h->root.type == bfd_link_hash_indirect
|
| 11987 |
|
|
|| h->root.type == bfd_link_hash_warning)
|
| 11988 |
|
|
h = (struct elf_link_hash_entry *) h->root.u.i.link;
|
| 11989 |
|
|
}
|
| 11990 |
|
|
eh = (struct elf32_arm_link_hash_entry *) h;
|
| 11991 |
|
|
|
| 11992 |
|
|
call_reloc_p = FALSE;
|
| 11993 |
|
|
may_become_dynamic_p = FALSE;
|
| 11994 |
|
|
may_need_local_target_p = FALSE;
|
| 11995 |
|
|
|
| 11996 |
|
|
r_type = ELF32_R_TYPE (rel->r_info);
|
| 11997 |
|
|
r_type = arm_real_reloc_type (globals, r_type);
|
| 11998 |
|
|
switch (r_type)
|
| 11999 |
|
|
{
|
| 12000 |
|
|
case R_ARM_GOT32:
|
| 12001 |
|
|
case R_ARM_GOT_PREL:
|
| 12002 |
|
|
case R_ARM_TLS_GD32:
|
| 12003 |
|
|
case R_ARM_TLS_IE32:
|
| 12004 |
|
|
if (h != NULL)
|
| 12005 |
|
|
{
|
| 12006 |
|
|
if (h->got.refcount > 0)
|
| 12007 |
|
|
h->got.refcount -= 1;
|
| 12008 |
|
|
}
|
| 12009 |
|
|
else if (local_got_refcounts != NULL)
|
| 12010 |
|
|
{
|
| 12011 |
|
|
if (local_got_refcounts[r_symndx] > 0)
|
| 12012 |
|
|
local_got_refcounts[r_symndx] -= 1;
|
| 12013 |
|
|
}
|
| 12014 |
|
|
break;
|
| 12015 |
|
|
|
| 12016 |
|
|
case R_ARM_TLS_LDM32:
|
| 12017 |
|
|
globals->tls_ldm_got.refcount -= 1;
|
| 12018 |
|
|
break;
|
| 12019 |
|
|
|
| 12020 |
|
|
case R_ARM_PC24:
|
| 12021 |
|
|
case R_ARM_PLT32:
|
| 12022 |
|
|
case R_ARM_CALL:
|
| 12023 |
|
|
case R_ARM_JUMP24:
|
| 12024 |
|
|
case R_ARM_PREL31:
|
| 12025 |
|
|
case R_ARM_THM_CALL:
|
| 12026 |
|
|
case R_ARM_THM_JUMP24:
|
| 12027 |
|
|
case R_ARM_THM_JUMP19:
|
| 12028 |
|
|
call_reloc_p = TRUE;
|
| 12029 |
|
|
may_need_local_target_p = TRUE;
|
| 12030 |
|
|
break;
|
| 12031 |
|
|
|
| 12032 |
|
|
case R_ARM_ABS12:
|
| 12033 |
|
|
if (!globals->vxworks_p)
|
| 12034 |
|
|
{
|
| 12035 |
|
|
may_need_local_target_p = TRUE;
|
| 12036 |
|
|
break;
|
| 12037 |
|
|
}
|
| 12038 |
|
|
/* Fall through. */
|
| 12039 |
|
|
case R_ARM_ABS32:
|
| 12040 |
|
|
case R_ARM_ABS32_NOI:
|
| 12041 |
|
|
case R_ARM_REL32:
|
| 12042 |
|
|
case R_ARM_REL32_NOI:
|
| 12043 |
|
|
case R_ARM_MOVW_ABS_NC:
|
| 12044 |
|
|
case R_ARM_MOVT_ABS:
|
| 12045 |
|
|
case R_ARM_MOVW_PREL_NC:
|
| 12046 |
|
|
case R_ARM_MOVT_PREL:
|
| 12047 |
|
|
case R_ARM_THM_MOVW_ABS_NC:
|
| 12048 |
|
|
case R_ARM_THM_MOVT_ABS:
|
| 12049 |
|
|
case R_ARM_THM_MOVW_PREL_NC:
|
| 12050 |
|
|
case R_ARM_THM_MOVT_PREL:
|
| 12051 |
|
|
/* Should the interworking branches be here also? */
|
| 12052 |
|
|
if ((info->shared || globals->root.is_relocatable_executable)
|
| 12053 |
|
|
&& (sec->flags & SEC_ALLOC) != 0)
|
| 12054 |
|
|
{
|
| 12055 |
|
|
if (h == NULL
|
| 12056 |
|
|
&& (r_type == R_ARM_REL32 || r_type == R_ARM_REL32_NOI))
|
| 12057 |
|
|
{
|
| 12058 |
|
|
call_reloc_p = TRUE;
|
| 12059 |
|
|
may_need_local_target_p = TRUE;
|
| 12060 |
|
|
}
|
| 12061 |
|
|
else
|
| 12062 |
|
|
may_become_dynamic_p = TRUE;
|
| 12063 |
|
|
}
|
| 12064 |
|
|
else
|
| 12065 |
|
|
may_need_local_target_p = TRUE;
|
| 12066 |
|
|
break;
|
| 12067 |
|
|
|
| 12068 |
|
|
default:
|
| 12069 |
|
|
break;
|
| 12070 |
|
|
}
|
| 12071 |
|
|
|
| 12072 |
|
|
if (may_need_local_target_p
|
| 12073 |
|
|
&& elf32_arm_get_plt_info (abfd, eh, r_symndx, &root_plt, &arm_plt))
|
| 12074 |
|
|
{
|
| 12075 |
|
|
BFD_ASSERT (root_plt->refcount > 0);
|
| 12076 |
|
|
root_plt->refcount -= 1;
|
| 12077 |
|
|
|
| 12078 |
|
|
if (!call_reloc_p)
|
| 12079 |
|
|
arm_plt->noncall_refcount--;
|
| 12080 |
|
|
|
| 12081 |
|
|
if (r_type == R_ARM_THM_CALL)
|
| 12082 |
|
|
arm_plt->maybe_thumb_refcount--;
|
| 12083 |
|
|
|
| 12084 |
|
|
if (r_type == R_ARM_THM_JUMP24
|
| 12085 |
|
|
|| r_type == R_ARM_THM_JUMP19)
|
| 12086 |
|
|
arm_plt->thumb_refcount--;
|
| 12087 |
|
|
}
|
| 12088 |
|
|
|
| 12089 |
|
|
if (may_become_dynamic_p)
|
| 12090 |
|
|
{
|
| 12091 |
|
|
struct elf_dyn_relocs **pp;
|
| 12092 |
|
|
struct elf_dyn_relocs *p;
|
| 12093 |
|
|
|
| 12094 |
|
|
if (h != NULL)
|
| 12095 |
|
|
pp = &(eh->dyn_relocs);
|
| 12096 |
|
|
else
|
| 12097 |
|
|
{
|
| 12098 |
|
|
Elf_Internal_Sym *isym;
|
| 12099 |
|
|
|
| 12100 |
|
|
isym = bfd_sym_from_r_symndx (&globals->sym_cache,
|
| 12101 |
|
|
abfd, r_symndx);
|
| 12102 |
|
|
if (isym == NULL)
|
| 12103 |
|
|
return FALSE;
|
| 12104 |
|
|
pp = elf32_arm_get_local_dynreloc_list (abfd, r_symndx, isym);
|
| 12105 |
|
|
if (pp == NULL)
|
| 12106 |
|
|
return FALSE;
|
| 12107 |
|
|
}
|
| 12108 |
|
|
for (; (p = *pp) != NULL; pp = &p->next)
|
| 12109 |
|
|
if (p->sec == sec)
|
| 12110 |
|
|
{
|
| 12111 |
|
|
/* Everything must go for SEC. */
|
| 12112 |
|
|
*pp = p->next;
|
| 12113 |
|
|
break;
|
| 12114 |
|
|
}
|
| 12115 |
|
|
}
|
| 12116 |
|
|
}
|
| 12117 |
|
|
|
| 12118 |
|
|
return TRUE;
|
| 12119 |
|
|
}
|
| 12120 |
|
|
|
| 12121 |
|
|
/* Look through the relocs for a section during the first phase. */
|
| 12122 |
|
|
|
| 12123 |
|
|
static bfd_boolean
|
| 12124 |
|
|
elf32_arm_check_relocs (bfd *abfd, struct bfd_link_info *info,
|
| 12125 |
|
|
asection *sec, const Elf_Internal_Rela *relocs)
|
| 12126 |
|
|
{
|
| 12127 |
|
|
Elf_Internal_Shdr *symtab_hdr;
|
| 12128 |
|
|
struct elf_link_hash_entry **sym_hashes;
|
| 12129 |
|
|
const Elf_Internal_Rela *rel;
|
| 12130 |
|
|
const Elf_Internal_Rela *rel_end;
|
| 12131 |
|
|
bfd *dynobj;
|
| 12132 |
|
|
asection *sreloc;
|
| 12133 |
|
|
struct elf32_arm_link_hash_table *htab;
|
| 12134 |
|
|
bfd_boolean call_reloc_p;
|
| 12135 |
|
|
bfd_boolean may_become_dynamic_p;
|
| 12136 |
|
|
bfd_boolean may_need_local_target_p;
|
| 12137 |
|
|
unsigned long nsyms;
|
| 12138 |
|
|
|
| 12139 |
|
|
if (info->relocatable)
|
| 12140 |
|
|
return TRUE;
|
| 12141 |
|
|
|
| 12142 |
|
|
BFD_ASSERT (is_arm_elf (abfd));
|
| 12143 |
|
|
|
| 12144 |
|
|
htab = elf32_arm_hash_table (info);
|
| 12145 |
|
|
if (htab == NULL)
|
| 12146 |
|
|
return FALSE;
|
| 12147 |
|
|
|
| 12148 |
|
|
sreloc = NULL;
|
| 12149 |
|
|
|
| 12150 |
|
|
/* Create dynamic sections for relocatable executables so that we can
|
| 12151 |
|
|
copy relocations. */
|
| 12152 |
|
|
if (htab->root.is_relocatable_executable
|
| 12153 |
|
|
&& ! htab->root.dynamic_sections_created)
|
| 12154 |
|
|
{
|
| 12155 |
|
|
if (! _bfd_elf_link_create_dynamic_sections (abfd, info))
|
| 12156 |
|
|
return FALSE;
|
| 12157 |
|
|
}
|
| 12158 |
|
|
|
| 12159 |
|
|
if (htab->root.dynobj == NULL)
|
| 12160 |
|
|
htab->root.dynobj = abfd;
|
| 12161 |
|
|
if (!create_ifunc_sections (info))
|
| 12162 |
|
|
return FALSE;
|
| 12163 |
|
|
|
| 12164 |
|
|
dynobj = htab->root.dynobj;
|
| 12165 |
|
|
|
| 12166 |
|
|
symtab_hdr = & elf_symtab_hdr (abfd);
|
| 12167 |
|
|
sym_hashes = elf_sym_hashes (abfd);
|
| 12168 |
|
|
nsyms = NUM_SHDR_ENTRIES (symtab_hdr);
|
| 12169 |
|
|
|
| 12170 |
|
|
rel_end = relocs + sec->reloc_count;
|
| 12171 |
|
|
for (rel = relocs; rel < rel_end; rel++)
|
| 12172 |
|
|
{
|
| 12173 |
|
|
Elf_Internal_Sym *isym;
|
| 12174 |
|
|
struct elf_link_hash_entry *h;
|
| 12175 |
|
|
struct elf32_arm_link_hash_entry *eh;
|
| 12176 |
|
|
unsigned long r_symndx;
|
| 12177 |
|
|
int r_type;
|
| 12178 |
|
|
|
| 12179 |
|
|
r_symndx = ELF32_R_SYM (rel->r_info);
|
| 12180 |
|
|
r_type = ELF32_R_TYPE (rel->r_info);
|
| 12181 |
|
|
r_type = arm_real_reloc_type (htab, r_type);
|
| 12182 |
|
|
|
| 12183 |
|
|
if (r_symndx >= nsyms
|
| 12184 |
|
|
/* PR 9934: It is possible to have relocations that do not
|
| 12185 |
|
|
refer to symbols, thus it is also possible to have an
|
| 12186 |
|
|
object file containing relocations but no symbol table. */
|
| 12187 |
|
|
&& (r_symndx > STN_UNDEF || nsyms > 0))
|
| 12188 |
|
|
{
|
| 12189 |
|
|
(*_bfd_error_handler) (_("%B: bad symbol index: %d"), abfd,
|
| 12190 |
|
|
r_symndx);
|
| 12191 |
|
|
return FALSE;
|
| 12192 |
|
|
}
|
| 12193 |
|
|
|
| 12194 |
|
|
h = NULL;
|
| 12195 |
|
|
isym = NULL;
|
| 12196 |
|
|
if (nsyms > 0)
|
| 12197 |
|
|
{
|
| 12198 |
|
|
if (r_symndx < symtab_hdr->sh_info)
|
| 12199 |
|
|
{
|
| 12200 |
|
|
/* A local symbol. */
|
| 12201 |
|
|
isym = bfd_sym_from_r_symndx (&htab->sym_cache,
|
| 12202 |
|
|
abfd, r_symndx);
|
| 12203 |
|
|
if (isym == NULL)
|
| 12204 |
|
|
return FALSE;
|
| 12205 |
|
|
}
|
| 12206 |
|
|
else
|
| 12207 |
|
|
{
|
| 12208 |
|
|
h = sym_hashes[r_symndx - symtab_hdr->sh_info];
|
| 12209 |
|
|
while (h->root.type == bfd_link_hash_indirect
|
| 12210 |
|
|
|| h->root.type == bfd_link_hash_warning)
|
| 12211 |
|
|
h = (struct elf_link_hash_entry *) h->root.u.i.link;
|
| 12212 |
|
|
}
|
| 12213 |
|
|
}
|
| 12214 |
|
|
|
| 12215 |
|
|
eh = (struct elf32_arm_link_hash_entry *) h;
|
| 12216 |
|
|
|
| 12217 |
|
|
call_reloc_p = FALSE;
|
| 12218 |
|
|
may_become_dynamic_p = FALSE;
|
| 12219 |
|
|
may_need_local_target_p = FALSE;
|
| 12220 |
|
|
|
| 12221 |
|
|
/* Could be done earlier, if h were already available. */
|
| 12222 |
|
|
r_type = elf32_arm_tls_transition (info, r_type, h);
|
| 12223 |
|
|
switch (r_type)
|
| 12224 |
|
|
{
|
| 12225 |
|
|
case R_ARM_GOT32:
|
| 12226 |
|
|
case R_ARM_GOT_PREL:
|
| 12227 |
|
|
case R_ARM_TLS_GD32:
|
| 12228 |
|
|
case R_ARM_TLS_IE32:
|
| 12229 |
|
|
case R_ARM_TLS_GOTDESC:
|
| 12230 |
|
|
case R_ARM_TLS_DESCSEQ:
|
| 12231 |
|
|
case R_ARM_THM_TLS_DESCSEQ:
|
| 12232 |
|
|
case R_ARM_TLS_CALL:
|
| 12233 |
|
|
case R_ARM_THM_TLS_CALL:
|
| 12234 |
|
|
/* This symbol requires a global offset table entry. */
|
| 12235 |
|
|
{
|
| 12236 |
|
|
int tls_type, old_tls_type;
|
| 12237 |
|
|
|
| 12238 |
|
|
switch (r_type)
|
| 12239 |
|
|
{
|
| 12240 |
|
|
case R_ARM_TLS_GD32: tls_type = GOT_TLS_GD; break;
|
| 12241 |
|
|
|
| 12242 |
|
|
case R_ARM_TLS_IE32: tls_type = GOT_TLS_IE; break;
|
| 12243 |
|
|
|
| 12244 |
|
|
case R_ARM_TLS_GOTDESC:
|
| 12245 |
|
|
case R_ARM_TLS_CALL: case R_ARM_THM_TLS_CALL:
|
| 12246 |
|
|
case R_ARM_TLS_DESCSEQ: case R_ARM_THM_TLS_DESCSEQ:
|
| 12247 |
|
|
tls_type = GOT_TLS_GDESC; break;
|
| 12248 |
|
|
|
| 12249 |
|
|
default: tls_type = GOT_NORMAL; break;
|
| 12250 |
|
|
}
|
| 12251 |
|
|
|
| 12252 |
|
|
if (h != NULL)
|
| 12253 |
|
|
{
|
| 12254 |
|
|
h->got.refcount++;
|
| 12255 |
|
|
old_tls_type = elf32_arm_hash_entry (h)->tls_type;
|
| 12256 |
|
|
}
|
| 12257 |
|
|
else
|
| 12258 |
|
|
{
|
| 12259 |
|
|
/* This is a global offset table entry for a local symbol. */
|
| 12260 |
|
|
if (!elf32_arm_allocate_local_sym_info (abfd))
|
| 12261 |
|
|
return FALSE;
|
| 12262 |
|
|
elf_local_got_refcounts (abfd)[r_symndx] += 1;
|
| 12263 |
|
|
old_tls_type = elf32_arm_local_got_tls_type (abfd) [r_symndx];
|
| 12264 |
|
|
}
|
| 12265 |
|
|
|
| 12266 |
|
|
/* If a variable is accessed with both tls methods, two
|
| 12267 |
|
|
slots may be created. */
|
| 12268 |
|
|
if (GOT_TLS_GD_ANY_P (old_tls_type)
|
| 12269 |
|
|
&& GOT_TLS_GD_ANY_P (tls_type))
|
| 12270 |
|
|
tls_type |= old_tls_type;
|
| 12271 |
|
|
|
| 12272 |
|
|
/* We will already have issued an error message if there
|
| 12273 |
|
|
is a TLS/non-TLS mismatch, based on the symbol
|
| 12274 |
|
|
type. So just combine any TLS types needed. */
|
| 12275 |
|
|
if (old_tls_type != GOT_UNKNOWN && old_tls_type != GOT_NORMAL
|
| 12276 |
|
|
&& tls_type != GOT_NORMAL)
|
| 12277 |
|
|
tls_type |= old_tls_type;
|
| 12278 |
|
|
|
| 12279 |
|
|
/* If the symbol is accessed in both IE and GDESC
|
| 12280 |
|
|
method, we're able to relax. Turn off the GDESC flag,
|
| 12281 |
|
|
without messing up with any other kind of tls types
|
| 12282 |
|
|
that may be involved */
|
| 12283 |
|
|
if ((tls_type & GOT_TLS_IE) && (tls_type & GOT_TLS_GDESC))
|
| 12284 |
|
|
tls_type &= ~GOT_TLS_GDESC;
|
| 12285 |
|
|
|
| 12286 |
|
|
if (old_tls_type != tls_type)
|
| 12287 |
|
|
{
|
| 12288 |
|
|
if (h != NULL)
|
| 12289 |
|
|
elf32_arm_hash_entry (h)->tls_type = tls_type;
|
| 12290 |
|
|
else
|
| 12291 |
|
|
elf32_arm_local_got_tls_type (abfd) [r_symndx] = tls_type;
|
| 12292 |
|
|
}
|
| 12293 |
|
|
}
|
| 12294 |
|
|
/* Fall through. */
|
| 12295 |
|
|
|
| 12296 |
|
|
case R_ARM_TLS_LDM32:
|
| 12297 |
|
|
if (r_type == R_ARM_TLS_LDM32)
|
| 12298 |
|
|
htab->tls_ldm_got.refcount++;
|
| 12299 |
|
|
/* Fall through. */
|
| 12300 |
|
|
|
| 12301 |
|
|
case R_ARM_GOTOFF32:
|
| 12302 |
|
|
case R_ARM_GOTPC:
|
| 12303 |
|
|
if (htab->root.sgot == NULL
|
| 12304 |
|
|
&& !create_got_section (htab->root.dynobj, info))
|
| 12305 |
|
|
return FALSE;
|
| 12306 |
|
|
break;
|
| 12307 |
|
|
|
| 12308 |
|
|
case R_ARM_PC24:
|
| 12309 |
|
|
case R_ARM_PLT32:
|
| 12310 |
|
|
case R_ARM_CALL:
|
| 12311 |
|
|
case R_ARM_JUMP24:
|
| 12312 |
|
|
case R_ARM_PREL31:
|
| 12313 |
|
|
case R_ARM_THM_CALL:
|
| 12314 |
|
|
case R_ARM_THM_JUMP24:
|
| 12315 |
|
|
case R_ARM_THM_JUMP19:
|
| 12316 |
|
|
call_reloc_p = TRUE;
|
| 12317 |
|
|
may_need_local_target_p = TRUE;
|
| 12318 |
|
|
break;
|
| 12319 |
|
|
|
| 12320 |
|
|
case R_ARM_ABS12:
|
| 12321 |
|
|
/* VxWorks uses dynamic R_ARM_ABS12 relocations for
|
| 12322 |
|
|
ldr __GOTT_INDEX__ offsets. */
|
| 12323 |
|
|
if (!htab->vxworks_p)
|
| 12324 |
|
|
{
|
| 12325 |
|
|
may_need_local_target_p = TRUE;
|
| 12326 |
|
|
break;
|
| 12327 |
|
|
}
|
| 12328 |
|
|
/* Fall through. */
|
| 12329 |
|
|
|
| 12330 |
|
|
case R_ARM_MOVW_ABS_NC:
|
| 12331 |
|
|
case R_ARM_MOVT_ABS:
|
| 12332 |
|
|
case R_ARM_THM_MOVW_ABS_NC:
|
| 12333 |
|
|
case R_ARM_THM_MOVT_ABS:
|
| 12334 |
|
|
if (info->shared)
|
| 12335 |
|
|
{
|
| 12336 |
|
|
(*_bfd_error_handler)
|
| 12337 |
|
|
(_("%B: relocation %s against `%s' can not be used when making a shared object; recompile with -fPIC"),
|
| 12338 |
|
|
abfd, elf32_arm_howto_table_1[r_type].name,
|
| 12339 |
|
|
(h) ? h->root.root.string : "a local symbol");
|
| 12340 |
|
|
bfd_set_error (bfd_error_bad_value);
|
| 12341 |
|
|
return FALSE;
|
| 12342 |
|
|
}
|
| 12343 |
|
|
|
| 12344 |
|
|
/* Fall through. */
|
| 12345 |
|
|
case R_ARM_ABS32:
|
| 12346 |
|
|
case R_ARM_ABS32_NOI:
|
| 12347 |
|
|
case R_ARM_REL32:
|
| 12348 |
|
|
case R_ARM_REL32_NOI:
|
| 12349 |
|
|
case R_ARM_MOVW_PREL_NC:
|
| 12350 |
|
|
case R_ARM_MOVT_PREL:
|
| 12351 |
|
|
case R_ARM_THM_MOVW_PREL_NC:
|
| 12352 |
|
|
case R_ARM_THM_MOVT_PREL:
|
| 12353 |
|
|
|
| 12354 |
|
|
/* Should the interworking branches be listed here? */
|
| 12355 |
|
|
if ((info->shared || htab->root.is_relocatable_executable)
|
| 12356 |
|
|
&& (sec->flags & SEC_ALLOC) != 0)
|
| 12357 |
|
|
{
|
| 12358 |
|
|
if (h == NULL
|
| 12359 |
|
|
&& (r_type == R_ARM_REL32 || r_type == R_ARM_REL32_NOI))
|
| 12360 |
|
|
{
|
| 12361 |
|
|
/* In shared libraries and relocatable executables,
|
| 12362 |
|
|
we treat local relative references as calls;
|
| 12363 |
|
|
see the related SYMBOL_CALLS_LOCAL code in
|
| 12364 |
|
|
allocate_dynrelocs. */
|
| 12365 |
|
|
call_reloc_p = TRUE;
|
| 12366 |
|
|
may_need_local_target_p = TRUE;
|
| 12367 |
|
|
}
|
| 12368 |
|
|
else
|
| 12369 |
|
|
/* We are creating a shared library or relocatable
|
| 12370 |
|
|
executable, and this is a reloc against a global symbol,
|
| 12371 |
|
|
or a non-PC-relative reloc against a local symbol.
|
| 12372 |
|
|
We may need to copy the reloc into the output. */
|
| 12373 |
|
|
may_become_dynamic_p = TRUE;
|
| 12374 |
|
|
}
|
| 12375 |
|
|
else
|
| 12376 |
|
|
may_need_local_target_p = TRUE;
|
| 12377 |
|
|
break;
|
| 12378 |
|
|
|
| 12379 |
|
|
/* This relocation describes the C++ object vtable hierarchy.
|
| 12380 |
|
|
Reconstruct it for later use during GC. */
|
| 12381 |
|
|
case R_ARM_GNU_VTINHERIT:
|
| 12382 |
|
|
if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
|
| 12383 |
|
|
return FALSE;
|
| 12384 |
|
|
break;
|
| 12385 |
|
|
|
| 12386 |
|
|
/* This relocation describes which C++ vtable entries are actually
|
| 12387 |
|
|
used. Record for later use during GC. */
|
| 12388 |
|
|
case R_ARM_GNU_VTENTRY:
|
| 12389 |
|
|
BFD_ASSERT (h != NULL);
|
| 12390 |
|
|
if (h != NULL
|
| 12391 |
|
|
&& !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset))
|
| 12392 |
|
|
return FALSE;
|
| 12393 |
|
|
break;
|
| 12394 |
|
|
}
|
| 12395 |
|
|
|
| 12396 |
|
|
if (h != NULL)
|
| 12397 |
|
|
{
|
| 12398 |
|
|
if (call_reloc_p)
|
| 12399 |
|
|
/* We may need a .plt entry if the function this reloc
|
| 12400 |
|
|
refers to is in a different object, regardless of the
|
| 12401 |
|
|
symbol's type. We can't tell for sure yet, because
|
| 12402 |
|
|
something later might force the symbol local. */
|
| 12403 |
|
|
h->needs_plt = 1;
|
| 12404 |
|
|
else if (may_need_local_target_p)
|
| 12405 |
|
|
/* If this reloc is in a read-only section, we might
|
| 12406 |
|
|
need a copy reloc. We can't check reliably at this
|
| 12407 |
|
|
stage whether the section is read-only, as input
|
| 12408 |
|
|
sections have not yet been mapped to output sections.
|
| 12409 |
|
|
Tentatively set the flag for now, and correct in
|
| 12410 |
|
|
adjust_dynamic_symbol. */
|
| 12411 |
|
|
h->non_got_ref = 1;
|
| 12412 |
|
|
}
|
| 12413 |
|
|
|
| 12414 |
|
|
if (may_need_local_target_p
|
| 12415 |
|
|
&& (h != NULL || ELF32_ST_TYPE (isym->st_info) == STT_GNU_IFUNC))
|
| 12416 |
|
|
{
|
| 12417 |
|
|
union gotplt_union *root_plt;
|
| 12418 |
|
|
struct arm_plt_info *arm_plt;
|
| 12419 |
|
|
struct arm_local_iplt_info *local_iplt;
|
| 12420 |
|
|
|
| 12421 |
|
|
if (h != NULL)
|
| 12422 |
|
|
{
|
| 12423 |
|
|
root_plt = &h->plt;
|
| 12424 |
|
|
arm_plt = &eh->plt;
|
| 12425 |
|
|
}
|
| 12426 |
|
|
else
|
| 12427 |
|
|
{
|
| 12428 |
|
|
local_iplt = elf32_arm_create_local_iplt (abfd, r_symndx);
|
| 12429 |
|
|
if (local_iplt == NULL)
|
| 12430 |
|
|
return FALSE;
|
| 12431 |
|
|
root_plt = &local_iplt->root;
|
| 12432 |
|
|
arm_plt = &local_iplt->arm;
|
| 12433 |
|
|
}
|
| 12434 |
|
|
|
| 12435 |
|
|
/* If the symbol is a function that doesn't bind locally,
|
| 12436 |
|
|
this relocation will need a PLT entry. */
|
| 12437 |
|
|
root_plt->refcount += 1;
|
| 12438 |
|
|
|
| 12439 |
|
|
if (!call_reloc_p)
|
| 12440 |
|
|
arm_plt->noncall_refcount++;
|
| 12441 |
|
|
|
| 12442 |
|
|
/* It's too early to use htab->use_blx here, so we have to
|
| 12443 |
|
|
record possible blx references separately from
|
| 12444 |
|
|
relocs that definitely need a thumb stub. */
|
| 12445 |
|
|
|
| 12446 |
|
|
if (r_type == R_ARM_THM_CALL)
|
| 12447 |
|
|
arm_plt->maybe_thumb_refcount += 1;
|
| 12448 |
|
|
|
| 12449 |
|
|
if (r_type == R_ARM_THM_JUMP24
|
| 12450 |
|
|
|| r_type == R_ARM_THM_JUMP19)
|
| 12451 |
|
|
arm_plt->thumb_refcount += 1;
|
| 12452 |
|
|
}
|
| 12453 |
|
|
|
| 12454 |
|
|
if (may_become_dynamic_p)
|
| 12455 |
|
|
{
|
| 12456 |
|
|
struct elf_dyn_relocs *p, **head;
|
| 12457 |
|
|
|
| 12458 |
|
|
/* Create a reloc section in dynobj. */
|
| 12459 |
|
|
if (sreloc == NULL)
|
| 12460 |
|
|
{
|
| 12461 |
|
|
sreloc = _bfd_elf_make_dynamic_reloc_section
|
| 12462 |
|
|
(sec, dynobj, 2, abfd, ! htab->use_rel);
|
| 12463 |
|
|
|
| 12464 |
|
|
if (sreloc == NULL)
|
| 12465 |
|
|
return FALSE;
|
| 12466 |
|
|
|
| 12467 |
|
|
/* BPABI objects never have dynamic relocations mapped. */
|
| 12468 |
|
|
if (htab->symbian_p)
|
| 12469 |
|
|
{
|
| 12470 |
|
|
flagword flags;
|
| 12471 |
|
|
|
| 12472 |
|
|
flags = bfd_get_section_flags (dynobj, sreloc);
|
| 12473 |
|
|
flags &= ~(SEC_LOAD | SEC_ALLOC);
|
| 12474 |
|
|
bfd_set_section_flags (dynobj, sreloc, flags);
|
| 12475 |
|
|
}
|
| 12476 |
|
|
}
|
| 12477 |
|
|
|
| 12478 |
|
|
/* If this is a global symbol, count the number of
|
| 12479 |
|
|
relocations we need for this symbol. */
|
| 12480 |
|
|
if (h != NULL)
|
| 12481 |
|
|
head = &((struct elf32_arm_link_hash_entry *) h)->dyn_relocs;
|
| 12482 |
|
|
else
|
| 12483 |
|
|
{
|
| 12484 |
|
|
head = elf32_arm_get_local_dynreloc_list (abfd, r_symndx, isym);
|
| 12485 |
|
|
if (head == NULL)
|
| 12486 |
|
|
return FALSE;
|
| 12487 |
|
|
}
|
| 12488 |
|
|
|
| 12489 |
|
|
p = *head;
|
| 12490 |
|
|
if (p == NULL || p->sec != sec)
|
| 12491 |
|
|
{
|
| 12492 |
|
|
bfd_size_type amt = sizeof *p;
|
| 12493 |
|
|
|
| 12494 |
|
|
p = (struct elf_dyn_relocs *) bfd_alloc (htab->root.dynobj, amt);
|
| 12495 |
|
|
if (p == NULL)
|
| 12496 |
|
|
return FALSE;
|
| 12497 |
|
|
p->next = *head;
|
| 12498 |
|
|
*head = p;
|
| 12499 |
|
|
p->sec = sec;
|
| 12500 |
|
|
p->count = 0;
|
| 12501 |
|
|
p->pc_count = 0;
|
| 12502 |
|
|
}
|
| 12503 |
|
|
|
| 12504 |
|
|
if (r_type == R_ARM_REL32 || r_type == R_ARM_REL32_NOI)
|
| 12505 |
|
|
p->pc_count += 1;
|
| 12506 |
|
|
p->count += 1;
|
| 12507 |
|
|
}
|
| 12508 |
|
|
}
|
| 12509 |
|
|
|
| 12510 |
|
|
return TRUE;
|
| 12511 |
|
|
}
|
| 12512 |
|
|
|
| 12513 |
|
|
/* Unwinding tables are not referenced directly. This pass marks them as
|
| 12514 |
|
|
required if the corresponding code section is marked. */
|
| 12515 |
|
|
|
| 12516 |
|
|
static bfd_boolean
|
| 12517 |
|
|
elf32_arm_gc_mark_extra_sections (struct bfd_link_info *info,
|
| 12518 |
|
|
elf_gc_mark_hook_fn gc_mark_hook)
|
| 12519 |
|
|
{
|
| 12520 |
|
|
bfd *sub;
|
| 12521 |
|
|
Elf_Internal_Shdr **elf_shdrp;
|
| 12522 |
|
|
bfd_boolean again;
|
| 12523 |
|
|
|
| 12524 |
161 |
khays |
_bfd_elf_gc_mark_extra_sections (info, gc_mark_hook);
|
| 12525 |
|
|
|
| 12526 |
14 |
khays |
/* Marking EH data may cause additional code sections to be marked,
|
| 12527 |
|
|
requiring multiple passes. */
|
| 12528 |
|
|
again = TRUE;
|
| 12529 |
|
|
while (again)
|
| 12530 |
|
|
{
|
| 12531 |
|
|
again = FALSE;
|
| 12532 |
|
|
for (sub = info->input_bfds; sub != NULL; sub = sub->link_next)
|
| 12533 |
|
|
{
|
| 12534 |
|
|
asection *o;
|
| 12535 |
|
|
|
| 12536 |
|
|
if (! is_arm_elf (sub))
|
| 12537 |
|
|
continue;
|
| 12538 |
|
|
|
| 12539 |
|
|
elf_shdrp = elf_elfsections (sub);
|
| 12540 |
|
|
for (o = sub->sections; o != NULL; o = o->next)
|
| 12541 |
|
|
{
|
| 12542 |
|
|
Elf_Internal_Shdr *hdr;
|
| 12543 |
|
|
|
| 12544 |
|
|
hdr = &elf_section_data (o)->this_hdr;
|
| 12545 |
|
|
if (hdr->sh_type == SHT_ARM_EXIDX
|
| 12546 |
|
|
&& hdr->sh_link
|
| 12547 |
|
|
&& hdr->sh_link < elf_numsections (sub)
|
| 12548 |
|
|
&& !o->gc_mark
|
| 12549 |
|
|
&& elf_shdrp[hdr->sh_link]->bfd_section->gc_mark)
|
| 12550 |
|
|
{
|
| 12551 |
|
|
again = TRUE;
|
| 12552 |
|
|
if (!_bfd_elf_gc_mark (info, o, gc_mark_hook))
|
| 12553 |
|
|
return FALSE;
|
| 12554 |
|
|
}
|
| 12555 |
|
|
}
|
| 12556 |
|
|
}
|
| 12557 |
|
|
}
|
| 12558 |
|
|
|
| 12559 |
|
|
return TRUE;
|
| 12560 |
|
|
}
|
| 12561 |
|
|
|
| 12562 |
|
|
/* Treat mapping symbols as special target symbols. */
|
| 12563 |
|
|
|
| 12564 |
|
|
static bfd_boolean
|
| 12565 |
|
|
elf32_arm_is_target_special_symbol (bfd * abfd ATTRIBUTE_UNUSED, asymbol * sym)
|
| 12566 |
|
|
{
|
| 12567 |
|
|
return bfd_is_arm_special_symbol_name (sym->name,
|
| 12568 |
|
|
BFD_ARM_SPECIAL_SYM_TYPE_ANY);
|
| 12569 |
|
|
}
|
| 12570 |
|
|
|
| 12571 |
|
|
/* This is a copy of elf_find_function() from elf.c except that
|
| 12572 |
|
|
ARM mapping symbols are ignored when looking for function names
|
| 12573 |
|
|
and STT_ARM_TFUNC is considered to a function type. */
|
| 12574 |
|
|
|
| 12575 |
|
|
static bfd_boolean
|
| 12576 |
|
|
arm_elf_find_function (bfd * abfd ATTRIBUTE_UNUSED,
|
| 12577 |
|
|
asection * section,
|
| 12578 |
|
|
asymbol ** symbols,
|
| 12579 |
|
|
bfd_vma offset,
|
| 12580 |
|
|
const char ** filename_ptr,
|
| 12581 |
|
|
const char ** functionname_ptr)
|
| 12582 |
|
|
{
|
| 12583 |
|
|
const char * filename = NULL;
|
| 12584 |
|
|
asymbol * func = NULL;
|
| 12585 |
|
|
bfd_vma low_func = 0;
|
| 12586 |
|
|
asymbol ** p;
|
| 12587 |
|
|
|
| 12588 |
|
|
for (p = symbols; *p != NULL; p++)
|
| 12589 |
|
|
{
|
| 12590 |
|
|
elf_symbol_type *q;
|
| 12591 |
|
|
|
| 12592 |
|
|
q = (elf_symbol_type *) *p;
|
| 12593 |
|
|
|
| 12594 |
|
|
switch (ELF_ST_TYPE (q->internal_elf_sym.st_info))
|
| 12595 |
|
|
{
|
| 12596 |
|
|
default:
|
| 12597 |
|
|
break;
|
| 12598 |
|
|
case STT_FILE:
|
| 12599 |
|
|
filename = bfd_asymbol_name (&q->symbol);
|
| 12600 |
|
|
break;
|
| 12601 |
|
|
case STT_FUNC:
|
| 12602 |
|
|
case STT_ARM_TFUNC:
|
| 12603 |
|
|
case STT_NOTYPE:
|
| 12604 |
|
|
/* Skip mapping symbols. */
|
| 12605 |
|
|
if ((q->symbol.flags & BSF_LOCAL)
|
| 12606 |
|
|
&& bfd_is_arm_special_symbol_name (q->symbol.name,
|
| 12607 |
|
|
BFD_ARM_SPECIAL_SYM_TYPE_ANY))
|
| 12608 |
|
|
continue;
|
| 12609 |
|
|
/* Fall through. */
|
| 12610 |
|
|
if (bfd_get_section (&q->symbol) == section
|
| 12611 |
|
|
&& q->symbol.value >= low_func
|
| 12612 |
|
|
&& q->symbol.value <= offset)
|
| 12613 |
|
|
{
|
| 12614 |
|
|
func = (asymbol *) q;
|
| 12615 |
|
|
low_func = q->symbol.value;
|
| 12616 |
|
|
}
|
| 12617 |
|
|
break;
|
| 12618 |
|
|
}
|
| 12619 |
|
|
}
|
| 12620 |
|
|
|
| 12621 |
|
|
if (func == NULL)
|
| 12622 |
|
|
return FALSE;
|
| 12623 |
|
|
|
| 12624 |
|
|
if (filename_ptr)
|
| 12625 |
|
|
*filename_ptr = filename;
|
| 12626 |
|
|
if (functionname_ptr)
|
| 12627 |
|
|
*functionname_ptr = bfd_asymbol_name (func);
|
| 12628 |
|
|
|
| 12629 |
|
|
return TRUE;
|
| 12630 |
|
|
}
|
| 12631 |
|
|
|
| 12632 |
|
|
|
| 12633 |
|
|
/* Find the nearest line to a particular section and offset, for error
|
| 12634 |
|
|
reporting. This code is a duplicate of the code in elf.c, except
|
| 12635 |
|
|
that it uses arm_elf_find_function. */
|
| 12636 |
|
|
|
| 12637 |
|
|
static bfd_boolean
|
| 12638 |
|
|
elf32_arm_find_nearest_line (bfd * abfd,
|
| 12639 |
|
|
asection * section,
|
| 12640 |
|
|
asymbol ** symbols,
|
| 12641 |
|
|
bfd_vma offset,
|
| 12642 |
|
|
const char ** filename_ptr,
|
| 12643 |
|
|
const char ** functionname_ptr,
|
| 12644 |
|
|
unsigned int * line_ptr)
|
| 12645 |
|
|
{
|
| 12646 |
|
|
bfd_boolean found = FALSE;
|
| 12647 |
|
|
|
| 12648 |
|
|
/* We skip _bfd_dwarf1_find_nearest_line since no known ARM toolchain uses it. */
|
| 12649 |
|
|
|
| 12650 |
163 |
khays |
if (_bfd_dwarf2_find_nearest_line (abfd, dwarf_debug_sections,
|
| 12651 |
|
|
section, symbols, offset,
|
| 12652 |
14 |
khays |
filename_ptr, functionname_ptr,
|
| 12653 |
|
|
line_ptr, 0,
|
| 12654 |
|
|
& elf_tdata (abfd)->dwarf2_find_line_info))
|
| 12655 |
|
|
{
|
| 12656 |
|
|
if (!*functionname_ptr)
|
| 12657 |
|
|
arm_elf_find_function (abfd, section, symbols, offset,
|
| 12658 |
|
|
*filename_ptr ? NULL : filename_ptr,
|
| 12659 |
|
|
functionname_ptr);
|
| 12660 |
|
|
|
| 12661 |
|
|
return TRUE;
|
| 12662 |
|
|
}
|
| 12663 |
|
|
|
| 12664 |
|
|
if (! _bfd_stab_section_find_nearest_line (abfd, symbols, section, offset,
|
| 12665 |
|
|
& found, filename_ptr,
|
| 12666 |
|
|
functionname_ptr, line_ptr,
|
| 12667 |
|
|
& elf_tdata (abfd)->line_info))
|
| 12668 |
|
|
return FALSE;
|
| 12669 |
|
|
|
| 12670 |
|
|
if (found && (*functionname_ptr || *line_ptr))
|
| 12671 |
|
|
return TRUE;
|
| 12672 |
|
|
|
| 12673 |
|
|
if (symbols == NULL)
|
| 12674 |
|
|
return FALSE;
|
| 12675 |
|
|
|
| 12676 |
|
|
if (! arm_elf_find_function (abfd, section, symbols, offset,
|
| 12677 |
|
|
filename_ptr, functionname_ptr))
|
| 12678 |
|
|
return FALSE;
|
| 12679 |
|
|
|
| 12680 |
|
|
*line_ptr = 0;
|
| 12681 |
|
|
return TRUE;
|
| 12682 |
|
|
}
|
| 12683 |
|
|
|
| 12684 |
|
|
static bfd_boolean
|
| 12685 |
|
|
elf32_arm_find_inliner_info (bfd * abfd,
|
| 12686 |
|
|
const char ** filename_ptr,
|
| 12687 |
|
|
const char ** functionname_ptr,
|
| 12688 |
|
|
unsigned int * line_ptr)
|
| 12689 |
|
|
{
|
| 12690 |
|
|
bfd_boolean found;
|
| 12691 |
|
|
found = _bfd_dwarf2_find_inliner_info (abfd, filename_ptr,
|
| 12692 |
|
|
functionname_ptr, line_ptr,
|
| 12693 |
|
|
& elf_tdata (abfd)->dwarf2_find_line_info);
|
| 12694 |
|
|
return found;
|
| 12695 |
|
|
}
|
| 12696 |
|
|
|
| 12697 |
|
|
/* Adjust a symbol defined by a dynamic object and referenced by a
|
| 12698 |
|
|
regular object. The current definition is in some section of the
|
| 12699 |
|
|
dynamic object, but we're not including those sections. We have to
|
| 12700 |
|
|
change the definition to something the rest of the link can
|
| 12701 |
|
|
understand. */
|
| 12702 |
|
|
|
| 12703 |
|
|
static bfd_boolean
|
| 12704 |
|
|
elf32_arm_adjust_dynamic_symbol (struct bfd_link_info * info,
|
| 12705 |
|
|
struct elf_link_hash_entry * h)
|
| 12706 |
|
|
{
|
| 12707 |
|
|
bfd * dynobj;
|
| 12708 |
|
|
asection * s;
|
| 12709 |
|
|
struct elf32_arm_link_hash_entry * eh;
|
| 12710 |
|
|
struct elf32_arm_link_hash_table *globals;
|
| 12711 |
|
|
|
| 12712 |
|
|
globals = elf32_arm_hash_table (info);
|
| 12713 |
|
|
if (globals == NULL)
|
| 12714 |
|
|
return FALSE;
|
| 12715 |
|
|
|
| 12716 |
|
|
dynobj = elf_hash_table (info)->dynobj;
|
| 12717 |
|
|
|
| 12718 |
|
|
/* Make sure we know what is going on here. */
|
| 12719 |
|
|
BFD_ASSERT (dynobj != NULL
|
| 12720 |
|
|
&& (h->needs_plt
|
| 12721 |
|
|
|| h->type == STT_GNU_IFUNC
|
| 12722 |
|
|
|| h->u.weakdef != NULL
|
| 12723 |
|
|
|| (h->def_dynamic
|
| 12724 |
|
|
&& h->ref_regular
|
| 12725 |
|
|
&& !h->def_regular)));
|
| 12726 |
|
|
|
| 12727 |
|
|
eh = (struct elf32_arm_link_hash_entry *) h;
|
| 12728 |
|
|
|
| 12729 |
|
|
/* If this is a function, put it in the procedure linkage table. We
|
| 12730 |
|
|
will fill in the contents of the procedure linkage table later,
|
| 12731 |
|
|
when we know the address of the .got section. */
|
| 12732 |
|
|
if (h->type == STT_FUNC || h->type == STT_GNU_IFUNC || h->needs_plt)
|
| 12733 |
|
|
{
|
| 12734 |
|
|
/* Calls to STT_GNU_IFUNC symbols always use a PLT, even if the
|
| 12735 |
|
|
symbol binds locally. */
|
| 12736 |
|
|
if (h->plt.refcount <= 0
|
| 12737 |
|
|
|| (h->type != STT_GNU_IFUNC
|
| 12738 |
|
|
&& (SYMBOL_CALLS_LOCAL (info, h)
|
| 12739 |
|
|
|| (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
|
| 12740 |
|
|
&& h->root.type == bfd_link_hash_undefweak))))
|
| 12741 |
|
|
{
|
| 12742 |
|
|
/* This case can occur if we saw a PLT32 reloc in an input
|
| 12743 |
|
|
file, but the symbol was never referred to by a dynamic
|
| 12744 |
|
|
object, or if all references were garbage collected. In
|
| 12745 |
|
|
such a case, we don't actually need to build a procedure
|
| 12746 |
|
|
linkage table, and we can just do a PC24 reloc instead. */
|
| 12747 |
|
|
h->plt.offset = (bfd_vma) -1;
|
| 12748 |
|
|
eh->plt.thumb_refcount = 0;
|
| 12749 |
|
|
eh->plt.maybe_thumb_refcount = 0;
|
| 12750 |
|
|
eh->plt.noncall_refcount = 0;
|
| 12751 |
|
|
h->needs_plt = 0;
|
| 12752 |
|
|
}
|
| 12753 |
|
|
|
| 12754 |
|
|
return TRUE;
|
| 12755 |
|
|
}
|
| 12756 |
|
|
else
|
| 12757 |
|
|
{
|
| 12758 |
|
|
/* It's possible that we incorrectly decided a .plt reloc was
|
| 12759 |
|
|
needed for an R_ARM_PC24 or similar reloc to a non-function sym
|
| 12760 |
|
|
in check_relocs. We can't decide accurately between function
|
| 12761 |
|
|
and non-function syms in check-relocs; Objects loaded later in
|
| 12762 |
|
|
the link may change h->type. So fix it now. */
|
| 12763 |
|
|
h->plt.offset = (bfd_vma) -1;
|
| 12764 |
|
|
eh->plt.thumb_refcount = 0;
|
| 12765 |
|
|
eh->plt.maybe_thumb_refcount = 0;
|
| 12766 |
|
|
eh->plt.noncall_refcount = 0;
|
| 12767 |
|
|
}
|
| 12768 |
|
|
|
| 12769 |
|
|
/* If this is a weak symbol, and there is a real definition, the
|
| 12770 |
|
|
processor independent code will have arranged for us to see the
|
| 12771 |
|
|
real definition first, and we can just use the same value. */
|
| 12772 |
|
|
if (h->u.weakdef != NULL)
|
| 12773 |
|
|
{
|
| 12774 |
|
|
BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
|
| 12775 |
|
|
|| h->u.weakdef->root.type == bfd_link_hash_defweak);
|
| 12776 |
|
|
h->root.u.def.section = h->u.weakdef->root.u.def.section;
|
| 12777 |
|
|
h->root.u.def.value = h->u.weakdef->root.u.def.value;
|
| 12778 |
|
|
return TRUE;
|
| 12779 |
|
|
}
|
| 12780 |
|
|
|
| 12781 |
|
|
/* If there are no non-GOT references, we do not need a copy
|
| 12782 |
|
|
relocation. */
|
| 12783 |
|
|
if (!h->non_got_ref)
|
| 12784 |
|
|
return TRUE;
|
| 12785 |
|
|
|
| 12786 |
|
|
/* This is a reference to a symbol defined by a dynamic object which
|
| 12787 |
|
|
is not a function. */
|
| 12788 |
|
|
|
| 12789 |
|
|
/* If we are creating a shared library, we must presume that the
|
| 12790 |
|
|
only references to the symbol are via the global offset table.
|
| 12791 |
|
|
For such cases we need not do anything here; the relocations will
|
| 12792 |
|
|
be handled correctly by relocate_section. Relocatable executables
|
| 12793 |
|
|
can reference data in shared objects directly, so we don't need to
|
| 12794 |
|
|
do anything here. */
|
| 12795 |
|
|
if (info->shared || globals->root.is_relocatable_executable)
|
| 12796 |
|
|
return TRUE;
|
| 12797 |
|
|
|
| 12798 |
|
|
if (h->size == 0)
|
| 12799 |
|
|
{
|
| 12800 |
|
|
(*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
|
| 12801 |
|
|
h->root.root.string);
|
| 12802 |
|
|
return TRUE;
|
| 12803 |
|
|
}
|
| 12804 |
|
|
|
| 12805 |
|
|
/* We must allocate the symbol in our .dynbss section, which will
|
| 12806 |
|
|
become part of the .bss section of the executable. There will be
|
| 12807 |
|
|
an entry for this symbol in the .dynsym section. The dynamic
|
| 12808 |
|
|
object will contain position independent code, so all references
|
| 12809 |
|
|
from the dynamic object to this symbol will go through the global
|
| 12810 |
|
|
offset table. The dynamic linker will use the .dynsym entry to
|
| 12811 |
|
|
determine the address it must put in the global offset table, so
|
| 12812 |
|
|
both the dynamic object and the regular object will refer to the
|
| 12813 |
|
|
same memory location for the variable. */
|
| 12814 |
|
|
s = bfd_get_section_by_name (dynobj, ".dynbss");
|
| 12815 |
|
|
BFD_ASSERT (s != NULL);
|
| 12816 |
|
|
|
| 12817 |
|
|
/* We must generate a R_ARM_COPY reloc to tell the dynamic linker to
|
| 12818 |
|
|
copy the initial value out of the dynamic object and into the
|
| 12819 |
|
|
runtime process image. We need to remember the offset into the
|
| 12820 |
|
|
.rel(a).bss section we are going to use. */
|
| 12821 |
|
|
if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
|
| 12822 |
|
|
{
|
| 12823 |
|
|
asection *srel;
|
| 12824 |
|
|
|
| 12825 |
|
|
srel = bfd_get_section_by_name (dynobj, RELOC_SECTION (globals, ".bss"));
|
| 12826 |
|
|
elf32_arm_allocate_dynrelocs (info, srel, 1);
|
| 12827 |
|
|
h->needs_copy = 1;
|
| 12828 |
|
|
}
|
| 12829 |
|
|
|
| 12830 |
|
|
return _bfd_elf_adjust_dynamic_copy (h, s);
|
| 12831 |
|
|
}
|
| 12832 |
|
|
|
| 12833 |
|
|
/* Allocate space in .plt, .got and associated reloc sections for
|
| 12834 |
|
|
dynamic relocs. */
|
| 12835 |
|
|
|
| 12836 |
|
|
static bfd_boolean
|
| 12837 |
|
|
allocate_dynrelocs_for_symbol (struct elf_link_hash_entry *h, void * inf)
|
| 12838 |
|
|
{
|
| 12839 |
|
|
struct bfd_link_info *info;
|
| 12840 |
|
|
struct elf32_arm_link_hash_table *htab;
|
| 12841 |
|
|
struct elf32_arm_link_hash_entry *eh;
|
| 12842 |
|
|
struct elf_dyn_relocs *p;
|
| 12843 |
|
|
|
| 12844 |
|
|
if (h->root.type == bfd_link_hash_indirect)
|
| 12845 |
|
|
return TRUE;
|
| 12846 |
|
|
|
| 12847 |
|
|
eh = (struct elf32_arm_link_hash_entry *) h;
|
| 12848 |
|
|
|
| 12849 |
|
|
info = (struct bfd_link_info *) inf;
|
| 12850 |
|
|
htab = elf32_arm_hash_table (info);
|
| 12851 |
|
|
if (htab == NULL)
|
| 12852 |
|
|
return FALSE;
|
| 12853 |
|
|
|
| 12854 |
|
|
if ((htab->root.dynamic_sections_created || h->type == STT_GNU_IFUNC)
|
| 12855 |
|
|
&& h->plt.refcount > 0)
|
| 12856 |
|
|
{
|
| 12857 |
|
|
/* Make sure this symbol is output as a dynamic symbol.
|
| 12858 |
|
|
Undefined weak syms won't yet be marked as dynamic. */
|
| 12859 |
|
|
if (h->dynindx == -1
|
| 12860 |
|
|
&& !h->forced_local)
|
| 12861 |
|
|
{
|
| 12862 |
|
|
if (! bfd_elf_link_record_dynamic_symbol (info, h))
|
| 12863 |
|
|
return FALSE;
|
| 12864 |
|
|
}
|
| 12865 |
|
|
|
| 12866 |
|
|
/* If the call in the PLT entry binds locally, the associated
|
| 12867 |
|
|
GOT entry should use an R_ARM_IRELATIVE relocation instead of
|
| 12868 |
|
|
the usual R_ARM_JUMP_SLOT. Put it in the .iplt section rather
|
| 12869 |
|
|
than the .plt section. */
|
| 12870 |
|
|
if (h->type == STT_GNU_IFUNC && SYMBOL_CALLS_LOCAL (info, h))
|
| 12871 |
|
|
{
|
| 12872 |
|
|
eh->is_iplt = 1;
|
| 12873 |
|
|
if (eh->plt.noncall_refcount == 0
|
| 12874 |
|
|
&& SYMBOL_REFERENCES_LOCAL (info, h))
|
| 12875 |
|
|
/* All non-call references can be resolved directly.
|
| 12876 |
|
|
This means that they can (and in some cases, must)
|
| 12877 |
|
|
resolve directly to the run-time target, rather than
|
| 12878 |
|
|
to the PLT. That in turns means that any .got entry
|
| 12879 |
|
|
would be equal to the .igot.plt entry, so there's
|
| 12880 |
|
|
no point having both. */
|
| 12881 |
|
|
h->got.refcount = 0;
|
| 12882 |
|
|
}
|
| 12883 |
|
|
|
| 12884 |
|
|
if (info->shared
|
| 12885 |
|
|
|| eh->is_iplt
|
| 12886 |
|
|
|| WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
|
| 12887 |
|
|
{
|
| 12888 |
|
|
elf32_arm_allocate_plt_entry (info, eh->is_iplt, &h->plt, &eh->plt);
|
| 12889 |
|
|
|
| 12890 |
|
|
/* If this symbol is not defined in a regular file, and we are
|
| 12891 |
|
|
not generating a shared library, then set the symbol to this
|
| 12892 |
|
|
location in the .plt. This is required to make function
|
| 12893 |
|
|
pointers compare as equal between the normal executable and
|
| 12894 |
|
|
the shared library. */
|
| 12895 |
|
|
if (! info->shared
|
| 12896 |
|
|
&& !h->def_regular)
|
| 12897 |
|
|
{
|
| 12898 |
|
|
h->root.u.def.section = htab->root.splt;
|
| 12899 |
|
|
h->root.u.def.value = h->plt.offset;
|
| 12900 |
|
|
|
| 12901 |
|
|
/* Make sure the function is not marked as Thumb, in case
|
| 12902 |
|
|
it is the target of an ABS32 relocation, which will
|
| 12903 |
|
|
point to the PLT entry. */
|
| 12904 |
|
|
h->target_internal = ST_BRANCH_TO_ARM;
|
| 12905 |
|
|
}
|
| 12906 |
|
|
|
| 12907 |
|
|
htab->next_tls_desc_index++;
|
| 12908 |
|
|
|
| 12909 |
|
|
/* VxWorks executables have a second set of relocations for
|
| 12910 |
|
|
each PLT entry. They go in a separate relocation section,
|
| 12911 |
|
|
which is processed by the kernel loader. */
|
| 12912 |
|
|
if (htab->vxworks_p && !info->shared)
|
| 12913 |
|
|
{
|
| 12914 |
|
|
/* There is a relocation for the initial PLT entry:
|
| 12915 |
|
|
an R_ARM_32 relocation for _GLOBAL_OFFSET_TABLE_. */
|
| 12916 |
|
|
if (h->plt.offset == htab->plt_header_size)
|
| 12917 |
|
|
elf32_arm_allocate_dynrelocs (info, htab->srelplt2, 1);
|
| 12918 |
|
|
|
| 12919 |
|
|
/* There are two extra relocations for each subsequent
|
| 12920 |
|
|
PLT entry: an R_ARM_32 relocation for the GOT entry,
|
| 12921 |
|
|
and an R_ARM_32 relocation for the PLT entry. */
|
| 12922 |
|
|
elf32_arm_allocate_dynrelocs (info, htab->srelplt2, 2);
|
| 12923 |
|
|
}
|
| 12924 |
|
|
}
|
| 12925 |
|
|
else
|
| 12926 |
|
|
{
|
| 12927 |
|
|
h->plt.offset = (bfd_vma) -1;
|
| 12928 |
|
|
h->needs_plt = 0;
|
| 12929 |
|
|
}
|
| 12930 |
|
|
}
|
| 12931 |
|
|
else
|
| 12932 |
|
|
{
|
| 12933 |
|
|
h->plt.offset = (bfd_vma) -1;
|
| 12934 |
|
|
h->needs_plt = 0;
|
| 12935 |
|
|
}
|
| 12936 |
|
|
|
| 12937 |
|
|
eh = (struct elf32_arm_link_hash_entry *) h;
|
| 12938 |
|
|
eh->tlsdesc_got = (bfd_vma) -1;
|
| 12939 |
|
|
|
| 12940 |
|
|
if (h->got.refcount > 0)
|
| 12941 |
|
|
{
|
| 12942 |
|
|
asection *s;
|
| 12943 |
|
|
bfd_boolean dyn;
|
| 12944 |
|
|
int tls_type = elf32_arm_hash_entry (h)->tls_type;
|
| 12945 |
|
|
int indx;
|
| 12946 |
|
|
|
| 12947 |
|
|
/* Make sure this symbol is output as a dynamic symbol.
|
| 12948 |
|
|
Undefined weak syms won't yet be marked as dynamic. */
|
| 12949 |
|
|
if (h->dynindx == -1
|
| 12950 |
|
|
&& !h->forced_local)
|
| 12951 |
|
|
{
|
| 12952 |
|
|
if (! bfd_elf_link_record_dynamic_symbol (info, h))
|
| 12953 |
|
|
return FALSE;
|
| 12954 |
|
|
}
|
| 12955 |
|
|
|
| 12956 |
|
|
if (!htab->symbian_p)
|
| 12957 |
|
|
{
|
| 12958 |
|
|
s = htab->root.sgot;
|
| 12959 |
|
|
h->got.offset = s->size;
|
| 12960 |
|
|
|
| 12961 |
|
|
if (tls_type == GOT_UNKNOWN)
|
| 12962 |
|
|
abort ();
|
| 12963 |
|
|
|
| 12964 |
|
|
if (tls_type == GOT_NORMAL)
|
| 12965 |
|
|
/* Non-TLS symbols need one GOT slot. */
|
| 12966 |
|
|
s->size += 4;
|
| 12967 |
|
|
else
|
| 12968 |
|
|
{
|
| 12969 |
|
|
if (tls_type & GOT_TLS_GDESC)
|
| 12970 |
|
|
{
|
| 12971 |
|
|
/* R_ARM_TLS_DESC needs 2 GOT slots. */
|
| 12972 |
|
|
eh->tlsdesc_got
|
| 12973 |
|
|
= (htab->root.sgotplt->size
|
| 12974 |
|
|
- elf32_arm_compute_jump_table_size (htab));
|
| 12975 |
|
|
htab->root.sgotplt->size += 8;
|
| 12976 |
|
|
h->got.offset = (bfd_vma) -2;
|
| 12977 |
|
|
/* plt.got_offset needs to know there's a TLS_DESC
|
| 12978 |
|
|
reloc in the middle of .got.plt. */
|
| 12979 |
|
|
htab->num_tls_desc++;
|
| 12980 |
|
|
}
|
| 12981 |
|
|
|
| 12982 |
|
|
if (tls_type & GOT_TLS_GD)
|
| 12983 |
|
|
{
|
| 12984 |
|
|
/* R_ARM_TLS_GD32 needs 2 consecutive GOT slots. If
|
| 12985 |
|
|
the symbol is both GD and GDESC, got.offset may
|
| 12986 |
|
|
have been overwritten. */
|
| 12987 |
|
|
h->got.offset = s->size;
|
| 12988 |
|
|
s->size += 8;
|
| 12989 |
|
|
}
|
| 12990 |
|
|
|
| 12991 |
|
|
if (tls_type & GOT_TLS_IE)
|
| 12992 |
|
|
/* R_ARM_TLS_IE32 needs one GOT slot. */
|
| 12993 |
|
|
s->size += 4;
|
| 12994 |
|
|
}
|
| 12995 |
|
|
|
| 12996 |
|
|
dyn = htab->root.dynamic_sections_created;
|
| 12997 |
|
|
|
| 12998 |
|
|
indx = 0;
|
| 12999 |
|
|
if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
|
| 13000 |
|
|
&& (!info->shared
|
| 13001 |
|
|
|| !SYMBOL_REFERENCES_LOCAL (info, h)))
|
| 13002 |
|
|
indx = h->dynindx;
|
| 13003 |
|
|
|
| 13004 |
|
|
if (tls_type != GOT_NORMAL
|
| 13005 |
|
|
&& (info->shared || indx != 0)
|
| 13006 |
|
|
&& (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
|
| 13007 |
|
|
|| h->root.type != bfd_link_hash_undefweak))
|
| 13008 |
|
|
{
|
| 13009 |
|
|
if (tls_type & GOT_TLS_IE)
|
| 13010 |
|
|
elf32_arm_allocate_dynrelocs (info, htab->root.srelgot, 1);
|
| 13011 |
|
|
|
| 13012 |
|
|
if (tls_type & GOT_TLS_GD)
|
| 13013 |
|
|
elf32_arm_allocate_dynrelocs (info, htab->root.srelgot, 1);
|
| 13014 |
|
|
|
| 13015 |
|
|
if (tls_type & GOT_TLS_GDESC)
|
| 13016 |
|
|
{
|
| 13017 |
|
|
elf32_arm_allocate_dynrelocs (info, htab->root.srelplt, 1);
|
| 13018 |
|
|
/* GDESC needs a trampoline to jump to. */
|
| 13019 |
|
|
htab->tls_trampoline = -1;
|
| 13020 |
|
|
}
|
| 13021 |
|
|
|
| 13022 |
|
|
/* Only GD needs it. GDESC just emits one relocation per
|
| 13023 |
|
|
2 entries. */
|
| 13024 |
|
|
if ((tls_type & GOT_TLS_GD) && indx != 0)
|
| 13025 |
|
|
elf32_arm_allocate_dynrelocs (info, htab->root.srelgot, 1);
|
| 13026 |
|
|
}
|
| 13027 |
|
|
else if (!SYMBOL_REFERENCES_LOCAL (info, h))
|
| 13028 |
|
|
{
|
| 13029 |
|
|
if (htab->root.dynamic_sections_created)
|
| 13030 |
|
|
/* Reserve room for the GOT entry's R_ARM_GLOB_DAT relocation. */
|
| 13031 |
|
|
elf32_arm_allocate_dynrelocs (info, htab->root.srelgot, 1);
|
| 13032 |
|
|
}
|
| 13033 |
|
|
else if (h->type == STT_GNU_IFUNC
|
| 13034 |
|
|
&& eh->plt.noncall_refcount == 0)
|
| 13035 |
|
|
/* No non-call references resolve the STT_GNU_IFUNC's PLT entry;
|
| 13036 |
|
|
they all resolve dynamically instead. Reserve room for the
|
| 13037 |
|
|
GOT entry's R_ARM_IRELATIVE relocation. */
|
| 13038 |
|
|
elf32_arm_allocate_irelocs (info, htab->root.srelgot, 1);
|
| 13039 |
|
|
else if (info->shared)
|
| 13040 |
|
|
/* Reserve room for the GOT entry's R_ARM_RELATIVE relocation. */
|
| 13041 |
|
|
elf32_arm_allocate_dynrelocs (info, htab->root.srelgot, 1);
|
| 13042 |
|
|
}
|
| 13043 |
|
|
}
|
| 13044 |
|
|
else
|
| 13045 |
|
|
h->got.offset = (bfd_vma) -1;
|
| 13046 |
|
|
|
| 13047 |
|
|
/* Allocate stubs for exported Thumb functions on v4t. */
|
| 13048 |
|
|
if (!htab->use_blx && h->dynindx != -1
|
| 13049 |
|
|
&& h->def_regular
|
| 13050 |
|
|
&& h->target_internal == ST_BRANCH_TO_THUMB
|
| 13051 |
|
|
&& ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
|
| 13052 |
|
|
{
|
| 13053 |
|
|
struct elf_link_hash_entry * th;
|
| 13054 |
|
|
struct bfd_link_hash_entry * bh;
|
| 13055 |
|
|
struct elf_link_hash_entry * myh;
|
| 13056 |
|
|
char name[1024];
|
| 13057 |
|
|
asection *s;
|
| 13058 |
|
|
bh = NULL;
|
| 13059 |
|
|
/* Create a new symbol to regist the real location of the function. */
|
| 13060 |
|
|
s = h->root.u.def.section;
|
| 13061 |
|
|
sprintf (name, "__real_%s", h->root.root.string);
|
| 13062 |
|
|
_bfd_generic_link_add_one_symbol (info, s->owner,
|
| 13063 |
|
|
name, BSF_GLOBAL, s,
|
| 13064 |
|
|
h->root.u.def.value,
|
| 13065 |
|
|
NULL, TRUE, FALSE, &bh);
|
| 13066 |
|
|
|
| 13067 |
|
|
myh = (struct elf_link_hash_entry *) bh;
|
| 13068 |
|
|
myh->type = ELF_ST_INFO (STB_LOCAL, STT_FUNC);
|
| 13069 |
|
|
myh->forced_local = 1;
|
| 13070 |
|
|
myh->target_internal = ST_BRANCH_TO_THUMB;
|
| 13071 |
|
|
eh->export_glue = myh;
|
| 13072 |
|
|
th = record_arm_to_thumb_glue (info, h);
|
| 13073 |
|
|
/* Point the symbol at the stub. */
|
| 13074 |
|
|
h->type = ELF_ST_INFO (ELF_ST_BIND (h->type), STT_FUNC);
|
| 13075 |
|
|
h->target_internal = ST_BRANCH_TO_ARM;
|
| 13076 |
|
|
h->root.u.def.section = th->root.u.def.section;
|
| 13077 |
|
|
h->root.u.def.value = th->root.u.def.value & ~1;
|
| 13078 |
|
|
}
|
| 13079 |
|
|
|
| 13080 |
|
|
if (eh->dyn_relocs == NULL)
|
| 13081 |
|
|
return TRUE;
|
| 13082 |
|
|
|
| 13083 |
|
|
/* In the shared -Bsymbolic case, discard space allocated for
|
| 13084 |
|
|
dynamic pc-relative relocs against symbols which turn out to be
|
| 13085 |
|
|
defined in regular objects. For the normal shared case, discard
|
| 13086 |
|
|
space for pc-relative relocs that have become local due to symbol
|
| 13087 |
|
|
visibility changes. */
|
| 13088 |
|
|
|
| 13089 |
|
|
if (info->shared || htab->root.is_relocatable_executable)
|
| 13090 |
|
|
{
|
| 13091 |
|
|
/* The only relocs that use pc_count are R_ARM_REL32 and
|
| 13092 |
|
|
R_ARM_REL32_NOI, which will appear on something like
|
| 13093 |
|
|
".long foo - .". We want calls to protected symbols to resolve
|
| 13094 |
|
|
directly to the function rather than going via the plt. If people
|
| 13095 |
|
|
want function pointer comparisons to work as expected then they
|
| 13096 |
|
|
should avoid writing assembly like ".long foo - .". */
|
| 13097 |
|
|
if (SYMBOL_CALLS_LOCAL (info, h))
|
| 13098 |
|
|
{
|
| 13099 |
|
|
struct elf_dyn_relocs **pp;
|
| 13100 |
|
|
|
| 13101 |
|
|
for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
|
| 13102 |
|
|
{
|
| 13103 |
|
|
p->count -= p->pc_count;
|
| 13104 |
|
|
p->pc_count = 0;
|
| 13105 |
|
|
if (p->count == 0)
|
| 13106 |
|
|
*pp = p->next;
|
| 13107 |
|
|
else
|
| 13108 |
|
|
pp = &p->next;
|
| 13109 |
|
|
}
|
| 13110 |
|
|
}
|
| 13111 |
|
|
|
| 13112 |
|
|
if (htab->vxworks_p)
|
| 13113 |
|
|
{
|
| 13114 |
|
|
struct elf_dyn_relocs **pp;
|
| 13115 |
|
|
|
| 13116 |
|
|
for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
|
| 13117 |
|
|
{
|
| 13118 |
|
|
if (strcmp (p->sec->output_section->name, ".tls_vars") == 0)
|
| 13119 |
|
|
*pp = p->next;
|
| 13120 |
|
|
else
|
| 13121 |
|
|
pp = &p->next;
|
| 13122 |
|
|
}
|
| 13123 |
|
|
}
|
| 13124 |
|
|
|
| 13125 |
|
|
/* Also discard relocs on undefined weak syms with non-default
|
| 13126 |
|
|
visibility. */
|
| 13127 |
|
|
if (eh->dyn_relocs != NULL
|
| 13128 |
|
|
&& h->root.type == bfd_link_hash_undefweak)
|
| 13129 |
|
|
{
|
| 13130 |
|
|
if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
|
| 13131 |
|
|
eh->dyn_relocs = NULL;
|
| 13132 |
|
|
|
| 13133 |
|
|
/* Make sure undefined weak symbols are output as a dynamic
|
| 13134 |
|
|
symbol in PIEs. */
|
| 13135 |
|
|
else if (h->dynindx == -1
|
| 13136 |
|
|
&& !h->forced_local)
|
| 13137 |
|
|
{
|
| 13138 |
|
|
if (! bfd_elf_link_record_dynamic_symbol (info, h))
|
| 13139 |
|
|
return FALSE;
|
| 13140 |
|
|
}
|
| 13141 |
|
|
}
|
| 13142 |
|
|
|
| 13143 |
|
|
else if (htab->root.is_relocatable_executable && h->dynindx == -1
|
| 13144 |
|
|
&& h->root.type == bfd_link_hash_new)
|
| 13145 |
|
|
{
|
| 13146 |
|
|
/* Output absolute symbols so that we can create relocations
|
| 13147 |
|
|
against them. For normal symbols we output a relocation
|
| 13148 |
|
|
against the section that contains them. */
|
| 13149 |
|
|
if (! bfd_elf_link_record_dynamic_symbol (info, h))
|
| 13150 |
|
|
return FALSE;
|
| 13151 |
|
|
}
|
| 13152 |
|
|
|
| 13153 |
|
|
}
|
| 13154 |
|
|
else
|
| 13155 |
|
|
{
|
| 13156 |
|
|
/* For the non-shared case, discard space for relocs against
|
| 13157 |
|
|
symbols which turn out to need copy relocs or are not
|
| 13158 |
|
|
dynamic. */
|
| 13159 |
|
|
|
| 13160 |
|
|
if (!h->non_got_ref
|
| 13161 |
|
|
&& ((h->def_dynamic
|
| 13162 |
|
|
&& !h->def_regular)
|
| 13163 |
|
|
|| (htab->root.dynamic_sections_created
|
| 13164 |
|
|
&& (h->root.type == bfd_link_hash_undefweak
|
| 13165 |
|
|
|| h->root.type == bfd_link_hash_undefined))))
|
| 13166 |
|
|
{
|
| 13167 |
|
|
/* Make sure this symbol is output as a dynamic symbol.
|
| 13168 |
|
|
Undefined weak syms won't yet be marked as dynamic. */
|
| 13169 |
|
|
if (h->dynindx == -1
|
| 13170 |
|
|
&& !h->forced_local)
|
| 13171 |
|
|
{
|
| 13172 |
|
|
if (! bfd_elf_link_record_dynamic_symbol (info, h))
|
| 13173 |
|
|
return FALSE;
|
| 13174 |
|
|
}
|
| 13175 |
|
|
|
| 13176 |
|
|
/* If that succeeded, we know we'll be keeping all the
|
| 13177 |
|
|
relocs. */
|
| 13178 |
|
|
if (h->dynindx != -1)
|
| 13179 |
|
|
goto keep;
|
| 13180 |
|
|
}
|
| 13181 |
|
|
|
| 13182 |
|
|
eh->dyn_relocs = NULL;
|
| 13183 |
|
|
|
| 13184 |
|
|
keep: ;
|
| 13185 |
|
|
}
|
| 13186 |
|
|
|
| 13187 |
|
|
/* Finally, allocate space. */
|
| 13188 |
|
|
for (p = eh->dyn_relocs; p != NULL; p = p->next)
|
| 13189 |
|
|
{
|
| 13190 |
|
|
asection *sreloc = elf_section_data (p->sec)->sreloc;
|
| 13191 |
|
|
if (h->type == STT_GNU_IFUNC
|
| 13192 |
|
|
&& eh->plt.noncall_refcount == 0
|
| 13193 |
|
|
&& SYMBOL_REFERENCES_LOCAL (info, h))
|
| 13194 |
|
|
elf32_arm_allocate_irelocs (info, sreloc, p->count);
|
| 13195 |
|
|
else
|
| 13196 |
|
|
elf32_arm_allocate_dynrelocs (info, sreloc, p->count);
|
| 13197 |
|
|
}
|
| 13198 |
|
|
|
| 13199 |
|
|
return TRUE;
|
| 13200 |
|
|
}
|
| 13201 |
|
|
|
| 13202 |
|
|
/* Find any dynamic relocs that apply to read-only sections. */
|
| 13203 |
|
|
|
| 13204 |
|
|
static bfd_boolean
|
| 13205 |
|
|
elf32_arm_readonly_dynrelocs (struct elf_link_hash_entry * h, void * inf)
|
| 13206 |
|
|
{
|
| 13207 |
|
|
struct elf32_arm_link_hash_entry * eh;
|
| 13208 |
|
|
struct elf_dyn_relocs * p;
|
| 13209 |
|
|
|
| 13210 |
|
|
eh = (struct elf32_arm_link_hash_entry *) h;
|
| 13211 |
|
|
for (p = eh->dyn_relocs; p != NULL; p = p->next)
|
| 13212 |
|
|
{
|
| 13213 |
|
|
asection *s = p->sec;
|
| 13214 |
|
|
|
| 13215 |
|
|
if (s != NULL && (s->flags & SEC_READONLY) != 0)
|
| 13216 |
|
|
{
|
| 13217 |
|
|
struct bfd_link_info *info = (struct bfd_link_info *) inf;
|
| 13218 |
|
|
|
| 13219 |
|
|
info->flags |= DF_TEXTREL;
|
| 13220 |
|
|
|
| 13221 |
|
|
/* Not an error, just cut short the traversal. */
|
| 13222 |
|
|
return FALSE;
|
| 13223 |
|
|
}
|
| 13224 |
|
|
}
|
| 13225 |
|
|
return TRUE;
|
| 13226 |
|
|
}
|
| 13227 |
|
|
|
| 13228 |
|
|
void
|
| 13229 |
|
|
bfd_elf32_arm_set_byteswap_code (struct bfd_link_info *info,
|
| 13230 |
|
|
int byteswap_code)
|
| 13231 |
|
|
{
|
| 13232 |
|
|
struct elf32_arm_link_hash_table *globals;
|
| 13233 |
|
|
|
| 13234 |
|
|
globals = elf32_arm_hash_table (info);
|
| 13235 |
|
|
if (globals == NULL)
|
| 13236 |
|
|
return;
|
| 13237 |
|
|
|
| 13238 |
|
|
globals->byteswap_code = byteswap_code;
|
| 13239 |
|
|
}
|
| 13240 |
|
|
|
| 13241 |
|
|
/* Set the sizes of the dynamic sections. */
|
| 13242 |
|
|
|
| 13243 |
|
|
static bfd_boolean
|
| 13244 |
|
|
elf32_arm_size_dynamic_sections (bfd * output_bfd ATTRIBUTE_UNUSED,
|
| 13245 |
|
|
struct bfd_link_info * info)
|
| 13246 |
|
|
{
|
| 13247 |
|
|
bfd * dynobj;
|
| 13248 |
|
|
asection * s;
|
| 13249 |
|
|
bfd_boolean plt;
|
| 13250 |
|
|
bfd_boolean relocs;
|
| 13251 |
|
|
bfd *ibfd;
|
| 13252 |
|
|
struct elf32_arm_link_hash_table *htab;
|
| 13253 |
|
|
|
| 13254 |
|
|
htab = elf32_arm_hash_table (info);
|
| 13255 |
|
|
if (htab == NULL)
|
| 13256 |
|
|
return FALSE;
|
| 13257 |
|
|
|
| 13258 |
|
|
dynobj = elf_hash_table (info)->dynobj;
|
| 13259 |
|
|
BFD_ASSERT (dynobj != NULL);
|
| 13260 |
|
|
check_use_blx (htab);
|
| 13261 |
|
|
|
| 13262 |
|
|
if (elf_hash_table (info)->dynamic_sections_created)
|
| 13263 |
|
|
{
|
| 13264 |
|
|
/* Set the contents of the .interp section to the interpreter. */
|
| 13265 |
|
|
if (info->executable)
|
| 13266 |
|
|
{
|
| 13267 |
|
|
s = bfd_get_section_by_name (dynobj, ".interp");
|
| 13268 |
|
|
BFD_ASSERT (s != NULL);
|
| 13269 |
|
|
s->size = sizeof ELF_DYNAMIC_INTERPRETER;
|
| 13270 |
|
|
s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
|
| 13271 |
|
|
}
|
| 13272 |
|
|
}
|
| 13273 |
|
|
|
| 13274 |
|
|
/* Set up .got offsets for local syms, and space for local dynamic
|
| 13275 |
|
|
relocs. */
|
| 13276 |
|
|
for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
|
| 13277 |
|
|
{
|
| 13278 |
|
|
bfd_signed_vma *local_got;
|
| 13279 |
|
|
bfd_signed_vma *end_local_got;
|
| 13280 |
|
|
struct arm_local_iplt_info **local_iplt_ptr, *local_iplt;
|
| 13281 |
|
|
char *local_tls_type;
|
| 13282 |
|
|
bfd_vma *local_tlsdesc_gotent;
|
| 13283 |
|
|
bfd_size_type locsymcount;
|
| 13284 |
|
|
Elf_Internal_Shdr *symtab_hdr;
|
| 13285 |
|
|
asection *srel;
|
| 13286 |
|
|
bfd_boolean is_vxworks = htab->vxworks_p;
|
| 13287 |
|
|
unsigned int symndx;
|
| 13288 |
|
|
|
| 13289 |
|
|
if (! is_arm_elf (ibfd))
|
| 13290 |
|
|
continue;
|
| 13291 |
|
|
|
| 13292 |
|
|
for (s = ibfd->sections; s != NULL; s = s->next)
|
| 13293 |
|
|
{
|
| 13294 |
|
|
struct elf_dyn_relocs *p;
|
| 13295 |
|
|
|
| 13296 |
|
|
for (p = (struct elf_dyn_relocs *)
|
| 13297 |
|
|
elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
|
| 13298 |
|
|
{
|
| 13299 |
|
|
if (!bfd_is_abs_section (p->sec)
|
| 13300 |
|
|
&& bfd_is_abs_section (p->sec->output_section))
|
| 13301 |
|
|
{
|
| 13302 |
|
|
/* Input section has been discarded, either because
|
| 13303 |
|
|
it is a copy of a linkonce section or due to
|
| 13304 |
|
|
linker script /DISCARD/, so we'll be discarding
|
| 13305 |
|
|
the relocs too. */
|
| 13306 |
|
|
}
|
| 13307 |
|
|
else if (is_vxworks
|
| 13308 |
|
|
&& strcmp (p->sec->output_section->name,
|
| 13309 |
|
|
".tls_vars") == 0)
|
| 13310 |
|
|
{
|
| 13311 |
|
|
/* Relocations in vxworks .tls_vars sections are
|
| 13312 |
|
|
handled specially by the loader. */
|
| 13313 |
|
|
}
|
| 13314 |
|
|
else if (p->count != 0)
|
| 13315 |
|
|
{
|
| 13316 |
|
|
srel = elf_section_data (p->sec)->sreloc;
|
| 13317 |
|
|
elf32_arm_allocate_dynrelocs (info, srel, p->count);
|
| 13318 |
|
|
if ((p->sec->output_section->flags & SEC_READONLY) != 0)
|
| 13319 |
|
|
info->flags |= DF_TEXTREL;
|
| 13320 |
|
|
}
|
| 13321 |
|
|
}
|
| 13322 |
|
|
}
|
| 13323 |
|
|
|
| 13324 |
|
|
local_got = elf_local_got_refcounts (ibfd);
|
| 13325 |
|
|
if (!local_got)
|
| 13326 |
|
|
continue;
|
| 13327 |
|
|
|
| 13328 |
|
|
symtab_hdr = & elf_symtab_hdr (ibfd);
|
| 13329 |
|
|
locsymcount = symtab_hdr->sh_info;
|
| 13330 |
|
|
end_local_got = local_got + locsymcount;
|
| 13331 |
|
|
local_iplt_ptr = elf32_arm_local_iplt (ibfd);
|
| 13332 |
|
|
local_tls_type = elf32_arm_local_got_tls_type (ibfd);
|
| 13333 |
|
|
local_tlsdesc_gotent = elf32_arm_local_tlsdesc_gotent (ibfd);
|
| 13334 |
|
|
symndx = 0;
|
| 13335 |
|
|
s = htab->root.sgot;
|
| 13336 |
|
|
srel = htab->root.srelgot;
|
| 13337 |
|
|
for (; local_got < end_local_got;
|
| 13338 |
|
|
++local_got, ++local_iplt_ptr, ++local_tls_type,
|
| 13339 |
|
|
++local_tlsdesc_gotent, ++symndx)
|
| 13340 |
|
|
{
|
| 13341 |
|
|
*local_tlsdesc_gotent = (bfd_vma) -1;
|
| 13342 |
|
|
local_iplt = *local_iplt_ptr;
|
| 13343 |
|
|
if (local_iplt != NULL)
|
| 13344 |
|
|
{
|
| 13345 |
|
|
struct elf_dyn_relocs *p;
|
| 13346 |
|
|
|
| 13347 |
|
|
if (local_iplt->root.refcount > 0)
|
| 13348 |
|
|
{
|
| 13349 |
|
|
elf32_arm_allocate_plt_entry (info, TRUE,
|
| 13350 |
|
|
&local_iplt->root,
|
| 13351 |
|
|
&local_iplt->arm);
|
| 13352 |
|
|
if (local_iplt->arm.noncall_refcount == 0)
|
| 13353 |
|
|
/* All references to the PLT are calls, so all
|
| 13354 |
|
|
non-call references can resolve directly to the
|
| 13355 |
|
|
run-time target. This means that the .got entry
|
| 13356 |
|
|
would be the same as the .igot.plt entry, so there's
|
| 13357 |
|
|
no point creating both. */
|
| 13358 |
|
|
*local_got = 0;
|
| 13359 |
|
|
}
|
| 13360 |
|
|
else
|
| 13361 |
|
|
{
|
| 13362 |
|
|
BFD_ASSERT (local_iplt->arm.noncall_refcount == 0);
|
| 13363 |
|
|
local_iplt->root.offset = (bfd_vma) -1;
|
| 13364 |
|
|
}
|
| 13365 |
|
|
|
| 13366 |
|
|
for (p = local_iplt->dyn_relocs; p != NULL; p = p->next)
|
| 13367 |
|
|
{
|
| 13368 |
|
|
asection *psrel;
|
| 13369 |
|
|
|
| 13370 |
|
|
psrel = elf_section_data (p->sec)->sreloc;
|
| 13371 |
|
|
if (local_iplt->arm.noncall_refcount == 0)
|
| 13372 |
|
|
elf32_arm_allocate_irelocs (info, psrel, p->count);
|
| 13373 |
|
|
else
|
| 13374 |
|
|
elf32_arm_allocate_dynrelocs (info, psrel, p->count);
|
| 13375 |
|
|
}
|
| 13376 |
|
|
}
|
| 13377 |
|
|
if (*local_got > 0)
|
| 13378 |
|
|
{
|
| 13379 |
|
|
Elf_Internal_Sym *isym;
|
| 13380 |
|
|
|
| 13381 |
|
|
*local_got = s->size;
|
| 13382 |
|
|
if (*local_tls_type & GOT_TLS_GD)
|
| 13383 |
|
|
/* TLS_GD relocs need an 8-byte structure in the GOT. */
|
| 13384 |
|
|
s->size += 8;
|
| 13385 |
|
|
if (*local_tls_type & GOT_TLS_GDESC)
|
| 13386 |
|
|
{
|
| 13387 |
|
|
*local_tlsdesc_gotent = htab->root.sgotplt->size
|
| 13388 |
|
|
- elf32_arm_compute_jump_table_size (htab);
|
| 13389 |
|
|
htab->root.sgotplt->size += 8;
|
| 13390 |
|
|
*local_got = (bfd_vma) -2;
|
| 13391 |
|
|
/* plt.got_offset needs to know there's a TLS_DESC
|
| 13392 |
|
|
reloc in the middle of .got.plt. */
|
| 13393 |
|
|
htab->num_tls_desc++;
|
| 13394 |
|
|
}
|
| 13395 |
|
|
if (*local_tls_type & GOT_TLS_IE)
|
| 13396 |
|
|
s->size += 4;
|
| 13397 |
|
|
|
| 13398 |
|
|
if (*local_tls_type & GOT_NORMAL)
|
| 13399 |
|
|
{
|
| 13400 |
|
|
/* If the symbol is both GD and GDESC, *local_got
|
| 13401 |
|
|
may have been overwritten. */
|
| 13402 |
|
|
*local_got = s->size;
|
| 13403 |
|
|
s->size += 4;
|
| 13404 |
|
|
}
|
| 13405 |
|
|
|
| 13406 |
|
|
isym = bfd_sym_from_r_symndx (&htab->sym_cache, ibfd, symndx);
|
| 13407 |
|
|
if (isym == NULL)
|
| 13408 |
|
|
return FALSE;
|
| 13409 |
|
|
|
| 13410 |
|
|
/* If all references to an STT_GNU_IFUNC PLT are calls,
|
| 13411 |
|
|
then all non-call references, including this GOT entry,
|
| 13412 |
|
|
resolve directly to the run-time target. */
|
| 13413 |
|
|
if (ELF32_ST_TYPE (isym->st_info) == STT_GNU_IFUNC
|
| 13414 |
|
|
&& (local_iplt == NULL
|
| 13415 |
|
|
|| local_iplt->arm.noncall_refcount == 0))
|
| 13416 |
|
|
elf32_arm_allocate_irelocs (info, srel, 1);
|
| 13417 |
|
|
else if ((info->shared && !(*local_tls_type & GOT_TLS_GDESC))
|
| 13418 |
|
|
|| *local_tls_type & GOT_TLS_GD)
|
| 13419 |
|
|
elf32_arm_allocate_dynrelocs (info, srel, 1);
|
| 13420 |
|
|
|
| 13421 |
|
|
if (info->shared && *local_tls_type & GOT_TLS_GDESC)
|
| 13422 |
|
|
{
|
| 13423 |
|
|
elf32_arm_allocate_dynrelocs (info, htab->root.srelplt, 1);
|
| 13424 |
|
|
htab->tls_trampoline = -1;
|
| 13425 |
|
|
}
|
| 13426 |
|
|
}
|
| 13427 |
|
|
else
|
| 13428 |
|
|
*local_got = (bfd_vma) -1;
|
| 13429 |
|
|
}
|
| 13430 |
|
|
}
|
| 13431 |
|
|
|
| 13432 |
|
|
if (htab->tls_ldm_got.refcount > 0)
|
| 13433 |
|
|
{
|
| 13434 |
|
|
/* Allocate two GOT entries and one dynamic relocation (if necessary)
|
| 13435 |
|
|
for R_ARM_TLS_LDM32 relocations. */
|
| 13436 |
|
|
htab->tls_ldm_got.offset = htab->root.sgot->size;
|
| 13437 |
|
|
htab->root.sgot->size += 8;
|
| 13438 |
|
|
if (info->shared)
|
| 13439 |
|
|
elf32_arm_allocate_dynrelocs (info, htab->root.srelgot, 1);
|
| 13440 |
|
|
}
|
| 13441 |
|
|
else
|
| 13442 |
|
|
htab->tls_ldm_got.offset = -1;
|
| 13443 |
|
|
|
| 13444 |
|
|
/* Allocate global sym .plt and .got entries, and space for global
|
| 13445 |
|
|
sym dynamic relocs. */
|
| 13446 |
|
|
elf_link_hash_traverse (& htab->root, allocate_dynrelocs_for_symbol, info);
|
| 13447 |
|
|
|
| 13448 |
|
|
/* Here we rummage through the found bfds to collect glue information. */
|
| 13449 |
|
|
for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
|
| 13450 |
|
|
{
|
| 13451 |
|
|
if (! is_arm_elf (ibfd))
|
| 13452 |
|
|
continue;
|
| 13453 |
|
|
|
| 13454 |
|
|
/* Initialise mapping tables for code/data. */
|
| 13455 |
|
|
bfd_elf32_arm_init_maps (ibfd);
|
| 13456 |
|
|
|
| 13457 |
|
|
if (!bfd_elf32_arm_process_before_allocation (ibfd, info)
|
| 13458 |
|
|
|| !bfd_elf32_arm_vfp11_erratum_scan (ibfd, info))
|
| 13459 |
|
|
/* xgettext:c-format */
|
| 13460 |
|
|
_bfd_error_handler (_("Errors encountered processing file %s"),
|
| 13461 |
|
|
ibfd->filename);
|
| 13462 |
|
|
}
|
| 13463 |
|
|
|
| 13464 |
|
|
/* Allocate space for the glue sections now that we've sized them. */
|
| 13465 |
|
|
bfd_elf32_arm_allocate_interworking_sections (info);
|
| 13466 |
|
|
|
| 13467 |
|
|
/* For every jump slot reserved in the sgotplt, reloc_count is
|
| 13468 |
|
|
incremented. However, when we reserve space for TLS descriptors,
|
| 13469 |
|
|
it's not incremented, so in order to compute the space reserved
|
| 13470 |
|
|
for them, it suffices to multiply the reloc count by the jump
|
| 13471 |
|
|
slot size. */
|
| 13472 |
|
|
if (htab->root.srelplt)
|
| 13473 |
|
|
htab->sgotplt_jump_table_size = elf32_arm_compute_jump_table_size(htab);
|
| 13474 |
|
|
|
| 13475 |
|
|
if (htab->tls_trampoline)
|
| 13476 |
|
|
{
|
| 13477 |
|
|
if (htab->root.splt->size == 0)
|
| 13478 |
|
|
htab->root.splt->size += htab->plt_header_size;
|
| 13479 |
|
|
|
| 13480 |
|
|
htab->tls_trampoline = htab->root.splt->size;
|
| 13481 |
|
|
htab->root.splt->size += htab->plt_entry_size;
|
| 13482 |
|
|
|
| 13483 |
|
|
/* If we're not using lazy TLS relocations, don't generate the
|
| 13484 |
|
|
PLT and GOT entries they require. */
|
| 13485 |
|
|
if (!(info->flags & DF_BIND_NOW))
|
| 13486 |
|
|
{
|
| 13487 |
|
|
htab->dt_tlsdesc_got = htab->root.sgot->size;
|
| 13488 |
|
|
htab->root.sgot->size += 4;
|
| 13489 |
|
|
|
| 13490 |
|
|
htab->dt_tlsdesc_plt = htab->root.splt->size;
|
| 13491 |
|
|
htab->root.splt->size += 4 * ARRAY_SIZE (dl_tlsdesc_lazy_trampoline);
|
| 13492 |
|
|
}
|
| 13493 |
|
|
}
|
| 13494 |
|
|
|
| 13495 |
|
|
/* The check_relocs and adjust_dynamic_symbol entry points have
|
| 13496 |
|
|
determined the sizes of the various dynamic sections. Allocate
|
| 13497 |
|
|
memory for them. */
|
| 13498 |
|
|
plt = FALSE;
|
| 13499 |
|
|
relocs = FALSE;
|
| 13500 |
|
|
for (s = dynobj->sections; s != NULL; s = s->next)
|
| 13501 |
|
|
{
|
| 13502 |
|
|
const char * name;
|
| 13503 |
|
|
|
| 13504 |
|
|
if ((s->flags & SEC_LINKER_CREATED) == 0)
|
| 13505 |
|
|
continue;
|
| 13506 |
|
|
|
| 13507 |
|
|
/* It's OK to base decisions on the section name, because none
|
| 13508 |
|
|
of the dynobj section names depend upon the input files. */
|
| 13509 |
|
|
name = bfd_get_section_name (dynobj, s);
|
| 13510 |
|
|
|
| 13511 |
|
|
if (s == htab->root.splt)
|
| 13512 |
|
|
{
|
| 13513 |
|
|
/* Remember whether there is a PLT. */
|
| 13514 |
|
|
plt = s->size != 0;
|
| 13515 |
|
|
}
|
| 13516 |
|
|
else if (CONST_STRNEQ (name, ".rel"))
|
| 13517 |
|
|
{
|
| 13518 |
|
|
if (s->size != 0)
|
| 13519 |
|
|
{
|
| 13520 |
|
|
/* Remember whether there are any reloc sections other
|
| 13521 |
|
|
than .rel(a).plt and .rela.plt.unloaded. */
|
| 13522 |
|
|
if (s != htab->root.srelplt && s != htab->srelplt2)
|
| 13523 |
|
|
relocs = TRUE;
|
| 13524 |
|
|
|
| 13525 |
|
|
/* We use the reloc_count field as a counter if we need
|
| 13526 |
|
|
to copy relocs into the output file. */
|
| 13527 |
|
|
s->reloc_count = 0;
|
| 13528 |
|
|
}
|
| 13529 |
|
|
}
|
| 13530 |
|
|
else if (s != htab->root.sgot
|
| 13531 |
|
|
&& s != htab->root.sgotplt
|
| 13532 |
|
|
&& s != htab->root.iplt
|
| 13533 |
|
|
&& s != htab->root.igotplt
|
| 13534 |
|
|
&& s != htab->sdynbss)
|
| 13535 |
|
|
{
|
| 13536 |
|
|
/* It's not one of our sections, so don't allocate space. */
|
| 13537 |
|
|
continue;
|
| 13538 |
|
|
}
|
| 13539 |
|
|
|
| 13540 |
|
|
if (s->size == 0)
|
| 13541 |
|
|
{
|
| 13542 |
|
|
/* If we don't need this section, strip it from the
|
| 13543 |
|
|
output file. This is mostly to handle .rel(a).bss and
|
| 13544 |
|
|
.rel(a).plt. We must create both sections in
|
| 13545 |
|
|
create_dynamic_sections, because they must be created
|
| 13546 |
|
|
before the linker maps input sections to output
|
| 13547 |
|
|
sections. The linker does that before
|
| 13548 |
|
|
adjust_dynamic_symbol is called, and it is that
|
| 13549 |
|
|
function which decides whether anything needs to go
|
| 13550 |
|
|
into these sections. */
|
| 13551 |
|
|
s->flags |= SEC_EXCLUDE;
|
| 13552 |
|
|
continue;
|
| 13553 |
|
|
}
|
| 13554 |
|
|
|
| 13555 |
|
|
if ((s->flags & SEC_HAS_CONTENTS) == 0)
|
| 13556 |
|
|
continue;
|
| 13557 |
|
|
|
| 13558 |
|
|
/* Allocate memory for the section contents. */
|
| 13559 |
|
|
s->contents = (unsigned char *) bfd_zalloc (dynobj, s->size);
|
| 13560 |
|
|
if (s->contents == NULL)
|
| 13561 |
|
|
return FALSE;
|
| 13562 |
|
|
}
|
| 13563 |
|
|
|
| 13564 |
|
|
if (elf_hash_table (info)->dynamic_sections_created)
|
| 13565 |
|
|
{
|
| 13566 |
|
|
/* Add some entries to the .dynamic section. We fill in the
|
| 13567 |
|
|
values later, in elf32_arm_finish_dynamic_sections, but we
|
| 13568 |
|
|
must add the entries now so that we get the correct size for
|
| 13569 |
|
|
the .dynamic section. The DT_DEBUG entry is filled in by the
|
| 13570 |
|
|
dynamic linker and used by the debugger. */
|
| 13571 |
|
|
#define add_dynamic_entry(TAG, VAL) \
|
| 13572 |
|
|
_bfd_elf_add_dynamic_entry (info, TAG, VAL)
|
| 13573 |
|
|
|
| 13574 |
|
|
if (info->executable)
|
| 13575 |
|
|
{
|
| 13576 |
|
|
if (!add_dynamic_entry (DT_DEBUG, 0))
|
| 13577 |
|
|
return FALSE;
|
| 13578 |
|
|
}
|
| 13579 |
|
|
|
| 13580 |
|
|
if (plt)
|
| 13581 |
|
|
{
|
| 13582 |
|
|
if ( !add_dynamic_entry (DT_PLTGOT, 0)
|
| 13583 |
|
|
|| !add_dynamic_entry (DT_PLTRELSZ, 0)
|
| 13584 |
|
|
|| !add_dynamic_entry (DT_PLTREL,
|
| 13585 |
|
|
htab->use_rel ? DT_REL : DT_RELA)
|
| 13586 |
|
|
|| !add_dynamic_entry (DT_JMPREL, 0))
|
| 13587 |
|
|
return FALSE;
|
| 13588 |
|
|
|
| 13589 |
|
|
if (htab->dt_tlsdesc_plt &&
|
| 13590 |
|
|
(!add_dynamic_entry (DT_TLSDESC_PLT,0)
|
| 13591 |
|
|
|| !add_dynamic_entry (DT_TLSDESC_GOT,0)))
|
| 13592 |
|
|
return FALSE;
|
| 13593 |
|
|
}
|
| 13594 |
|
|
|
| 13595 |
|
|
if (relocs)
|
| 13596 |
|
|
{
|
| 13597 |
|
|
if (htab->use_rel)
|
| 13598 |
|
|
{
|
| 13599 |
|
|
if (!add_dynamic_entry (DT_REL, 0)
|
| 13600 |
|
|
|| !add_dynamic_entry (DT_RELSZ, 0)
|
| 13601 |
|
|
|| !add_dynamic_entry (DT_RELENT, RELOC_SIZE (htab)))
|
| 13602 |
|
|
return FALSE;
|
| 13603 |
|
|
}
|
| 13604 |
|
|
else
|
| 13605 |
|
|
{
|
| 13606 |
|
|
if (!add_dynamic_entry (DT_RELA, 0)
|
| 13607 |
|
|
|| !add_dynamic_entry (DT_RELASZ, 0)
|
| 13608 |
|
|
|| !add_dynamic_entry (DT_RELAENT, RELOC_SIZE (htab)))
|
| 13609 |
|
|
return FALSE;
|
| 13610 |
|
|
}
|
| 13611 |
|
|
}
|
| 13612 |
|
|
|
| 13613 |
|
|
/* If any dynamic relocs apply to a read-only section,
|
| 13614 |
|
|
then we need a DT_TEXTREL entry. */
|
| 13615 |
|
|
if ((info->flags & DF_TEXTREL) == 0)
|
| 13616 |
|
|
elf_link_hash_traverse (& htab->root, elf32_arm_readonly_dynrelocs,
|
| 13617 |
|
|
info);
|
| 13618 |
|
|
|
| 13619 |
|
|
if ((info->flags & DF_TEXTREL) != 0)
|
| 13620 |
|
|
{
|
| 13621 |
|
|
if (!add_dynamic_entry (DT_TEXTREL, 0))
|
| 13622 |
|
|
return FALSE;
|
| 13623 |
|
|
}
|
| 13624 |
|
|
if (htab->vxworks_p
|
| 13625 |
|
|
&& !elf_vxworks_add_dynamic_entries (output_bfd, info))
|
| 13626 |
|
|
return FALSE;
|
| 13627 |
|
|
}
|
| 13628 |
|
|
#undef add_dynamic_entry
|
| 13629 |
|
|
|
| 13630 |
|
|
return TRUE;
|
| 13631 |
|
|
}
|
| 13632 |
|
|
|
| 13633 |
|
|
/* Size sections even though they're not dynamic. We use it to setup
|
| 13634 |
|
|
_TLS_MODULE_BASE_, if needed. */
|
| 13635 |
|
|
|
| 13636 |
|
|
static bfd_boolean
|
| 13637 |
|
|
elf32_arm_always_size_sections (bfd *output_bfd,
|
| 13638 |
|
|
struct bfd_link_info *info)
|
| 13639 |
|
|
{
|
| 13640 |
|
|
asection *tls_sec;
|
| 13641 |
|
|
|
| 13642 |
|
|
if (info->relocatable)
|
| 13643 |
|
|
return TRUE;
|
| 13644 |
|
|
|
| 13645 |
|
|
tls_sec = elf_hash_table (info)->tls_sec;
|
| 13646 |
|
|
|
| 13647 |
|
|
if (tls_sec)
|
| 13648 |
|
|
{
|
| 13649 |
|
|
struct elf_link_hash_entry *tlsbase;
|
| 13650 |
|
|
|
| 13651 |
|
|
tlsbase = elf_link_hash_lookup
|
| 13652 |
|
|
(elf_hash_table (info), "_TLS_MODULE_BASE_", TRUE, TRUE, FALSE);
|
| 13653 |
|
|
|
| 13654 |
|
|
if (tlsbase)
|
| 13655 |
|
|
{
|
| 13656 |
|
|
struct bfd_link_hash_entry *bh = NULL;
|
| 13657 |
|
|
const struct elf_backend_data *bed
|
| 13658 |
|
|
= get_elf_backend_data (output_bfd);
|
| 13659 |
|
|
|
| 13660 |
|
|
if (!(_bfd_generic_link_add_one_symbol
|
| 13661 |
|
|
(info, output_bfd, "_TLS_MODULE_BASE_", BSF_LOCAL,
|
| 13662 |
|
|
tls_sec, 0, NULL, FALSE,
|
| 13663 |
|
|
bed->collect, &bh)))
|
| 13664 |
|
|
return FALSE;
|
| 13665 |
|
|
|
| 13666 |
|
|
tlsbase->type = STT_TLS;
|
| 13667 |
|
|
tlsbase = (struct elf_link_hash_entry *)bh;
|
| 13668 |
|
|
tlsbase->def_regular = 1;
|
| 13669 |
|
|
tlsbase->other = STV_HIDDEN;
|
| 13670 |
|
|
(*bed->elf_backend_hide_symbol) (info, tlsbase, TRUE);
|
| 13671 |
|
|
}
|
| 13672 |
|
|
}
|
| 13673 |
|
|
return TRUE;
|
| 13674 |
|
|
}
|
| 13675 |
|
|
|
| 13676 |
|
|
/* Finish up dynamic symbol handling. We set the contents of various
|
| 13677 |
|
|
dynamic sections here. */
|
| 13678 |
|
|
|
| 13679 |
|
|
static bfd_boolean
|
| 13680 |
|
|
elf32_arm_finish_dynamic_symbol (bfd * output_bfd,
|
| 13681 |
|
|
struct bfd_link_info * info,
|
| 13682 |
|
|
struct elf_link_hash_entry * h,
|
| 13683 |
|
|
Elf_Internal_Sym * sym)
|
| 13684 |
|
|
{
|
| 13685 |
|
|
struct elf32_arm_link_hash_table *htab;
|
| 13686 |
|
|
struct elf32_arm_link_hash_entry *eh;
|
| 13687 |
|
|
|
| 13688 |
|
|
htab = elf32_arm_hash_table (info);
|
| 13689 |
|
|
if (htab == NULL)
|
| 13690 |
|
|
return FALSE;
|
| 13691 |
|
|
|
| 13692 |
|
|
eh = (struct elf32_arm_link_hash_entry *) h;
|
| 13693 |
|
|
|
| 13694 |
|
|
if (h->plt.offset != (bfd_vma) -1)
|
| 13695 |
|
|
{
|
| 13696 |
|
|
if (!eh->is_iplt)
|
| 13697 |
|
|
{
|
| 13698 |
|
|
BFD_ASSERT (h->dynindx != -1);
|
| 13699 |
|
|
elf32_arm_populate_plt_entry (output_bfd, info, &h->plt, &eh->plt,
|
| 13700 |
|
|
h->dynindx, 0);
|
| 13701 |
|
|
}
|
| 13702 |
|
|
|
| 13703 |
|
|
if (!h->def_regular)
|
| 13704 |
|
|
{
|
| 13705 |
|
|
/* Mark the symbol as undefined, rather than as defined in
|
| 13706 |
|
|
the .plt section. Leave the value alone. */
|
| 13707 |
|
|
sym->st_shndx = SHN_UNDEF;
|
| 13708 |
|
|
/* If the symbol is weak, we do need to clear the value.
|
| 13709 |
|
|
Otherwise, the PLT entry would provide a definition for
|
| 13710 |
|
|
the symbol even if the symbol wasn't defined anywhere,
|
| 13711 |
|
|
and so the symbol would never be NULL. */
|
| 13712 |
|
|
if (!h->ref_regular_nonweak)
|
| 13713 |
|
|
sym->st_value = 0;
|
| 13714 |
|
|
}
|
| 13715 |
|
|
else if (eh->is_iplt && eh->plt.noncall_refcount != 0)
|
| 13716 |
|
|
{
|
| 13717 |
|
|
/* At least one non-call relocation references this .iplt entry,
|
| 13718 |
|
|
so the .iplt entry is the function's canonical address. */
|
| 13719 |
|
|
sym->st_info = ELF_ST_INFO (ELF_ST_BIND (sym->st_info), STT_FUNC);
|
| 13720 |
|
|
sym->st_target_internal = ST_BRANCH_TO_ARM;
|
| 13721 |
|
|
sym->st_shndx = (_bfd_elf_section_from_bfd_section
|
| 13722 |
|
|
(output_bfd, htab->root.iplt->output_section));
|
| 13723 |
|
|
sym->st_value = (h->plt.offset
|
| 13724 |
|
|
+ htab->root.iplt->output_section->vma
|
| 13725 |
|
|
+ htab->root.iplt->output_offset);
|
| 13726 |
|
|
}
|
| 13727 |
|
|
}
|
| 13728 |
|
|
|
| 13729 |
|
|
if (h->needs_copy)
|
| 13730 |
|
|
{
|
| 13731 |
|
|
asection * s;
|
| 13732 |
|
|
Elf_Internal_Rela rel;
|
| 13733 |
|
|
|
| 13734 |
|
|
/* This symbol needs a copy reloc. Set it up. */
|
| 13735 |
|
|
BFD_ASSERT (h->dynindx != -1
|
| 13736 |
|
|
&& (h->root.type == bfd_link_hash_defined
|
| 13737 |
|
|
|| h->root.type == bfd_link_hash_defweak));
|
| 13738 |
|
|
|
| 13739 |
|
|
s = htab->srelbss;
|
| 13740 |
|
|
BFD_ASSERT (s != NULL);
|
| 13741 |
|
|
|
| 13742 |
|
|
rel.r_addend = 0;
|
| 13743 |
|
|
rel.r_offset = (h->root.u.def.value
|
| 13744 |
|
|
+ h->root.u.def.section->output_section->vma
|
| 13745 |
|
|
+ h->root.u.def.section->output_offset);
|
| 13746 |
|
|
rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_COPY);
|
| 13747 |
|
|
elf32_arm_add_dynreloc (output_bfd, info, s, &rel);
|
| 13748 |
|
|
}
|
| 13749 |
|
|
|
| 13750 |
|
|
/* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. On VxWorks,
|
| 13751 |
|
|
the _GLOBAL_OFFSET_TABLE_ symbol is not absolute: it is relative
|
| 13752 |
|
|
to the ".got" section. */
|
| 13753 |
|
|
if (strcmp (h->root.root.string, "_DYNAMIC") == 0
|
| 13754 |
|
|
|| (!htab->vxworks_p && h == htab->root.hgot))
|
| 13755 |
|
|
sym->st_shndx = SHN_ABS;
|
| 13756 |
|
|
|
| 13757 |
|
|
return TRUE;
|
| 13758 |
|
|
}
|
| 13759 |
|
|
|
| 13760 |
|
|
static void
|
| 13761 |
|
|
arm_put_trampoline (struct elf32_arm_link_hash_table *htab, bfd *output_bfd,
|
| 13762 |
|
|
void *contents,
|
| 13763 |
|
|
const unsigned long *template, unsigned count)
|
| 13764 |
|
|
{
|
| 13765 |
|
|
unsigned ix;
|
| 13766 |
|
|
|
| 13767 |
|
|
for (ix = 0; ix != count; ix++)
|
| 13768 |
|
|
{
|
| 13769 |
|
|
unsigned long insn = template[ix];
|
| 13770 |
|
|
|
| 13771 |
|
|
/* Emit mov pc,rx if bx is not permitted. */
|
| 13772 |
|
|
if (htab->fix_v4bx == 1 && (insn & 0x0ffffff0) == 0x012fff10)
|
| 13773 |
|
|
insn = (insn & 0xf000000f) | 0x01a0f000;
|
| 13774 |
|
|
put_arm_insn (htab, output_bfd, insn, (char *)contents + ix*4);
|
| 13775 |
|
|
}
|
| 13776 |
|
|
}
|
| 13777 |
|
|
|
| 13778 |
|
|
/* Finish up the dynamic sections. */
|
| 13779 |
|
|
|
| 13780 |
|
|
static bfd_boolean
|
| 13781 |
|
|
elf32_arm_finish_dynamic_sections (bfd * output_bfd, struct bfd_link_info * info)
|
| 13782 |
|
|
{
|
| 13783 |
|
|
bfd * dynobj;
|
| 13784 |
|
|
asection * sgot;
|
| 13785 |
|
|
asection * sdyn;
|
| 13786 |
|
|
struct elf32_arm_link_hash_table *htab;
|
| 13787 |
|
|
|
| 13788 |
|
|
htab = elf32_arm_hash_table (info);
|
| 13789 |
|
|
if (htab == NULL)
|
| 13790 |
|
|
return FALSE;
|
| 13791 |
|
|
|
| 13792 |
|
|
dynobj = elf_hash_table (info)->dynobj;
|
| 13793 |
|
|
|
| 13794 |
|
|
sgot = htab->root.sgotplt;
|
| 13795 |
148 |
khays |
/* A broken linker script might have discarded the dynamic sections.
|
| 13796 |
|
|
Catch this here so that we do not seg-fault later on. */
|
| 13797 |
|
|
if (sgot != NULL && bfd_is_abs_section (sgot->output_section))
|
| 13798 |
|
|
return FALSE;
|
| 13799 |
14 |
khays |
sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
|
| 13800 |
|
|
|
| 13801 |
|
|
if (elf_hash_table (info)->dynamic_sections_created)
|
| 13802 |
|
|
{
|
| 13803 |
|
|
asection *splt;
|
| 13804 |
|
|
Elf32_External_Dyn *dyncon, *dynconend;
|
| 13805 |
|
|
|
| 13806 |
|
|
splt = htab->root.splt;
|
| 13807 |
|
|
BFD_ASSERT (splt != NULL && sdyn != NULL);
|
| 13808 |
|
|
BFD_ASSERT (htab->symbian_p || sgot != NULL);
|
| 13809 |
|
|
|
| 13810 |
|
|
dyncon = (Elf32_External_Dyn *) sdyn->contents;
|
| 13811 |
|
|
dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
|
| 13812 |
|
|
|
| 13813 |
|
|
for (; dyncon < dynconend; dyncon++)
|
| 13814 |
|
|
{
|
| 13815 |
|
|
Elf_Internal_Dyn dyn;
|
| 13816 |
|
|
const char * name;
|
| 13817 |
|
|
asection * s;
|
| 13818 |
|
|
|
| 13819 |
|
|
bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
|
| 13820 |
|
|
|
| 13821 |
|
|
switch (dyn.d_tag)
|
| 13822 |
|
|
{
|
| 13823 |
|
|
unsigned int type;
|
| 13824 |
|
|
|
| 13825 |
|
|
default:
|
| 13826 |
|
|
if (htab->vxworks_p
|
| 13827 |
|
|
&& elf_vxworks_finish_dynamic_entry (output_bfd, &dyn))
|
| 13828 |
|
|
bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
|
| 13829 |
|
|
break;
|
| 13830 |
|
|
|
| 13831 |
|
|
case DT_HASH:
|
| 13832 |
|
|
name = ".hash";
|
| 13833 |
|
|
goto get_vma_if_bpabi;
|
| 13834 |
|
|
case DT_STRTAB:
|
| 13835 |
|
|
name = ".dynstr";
|
| 13836 |
|
|
goto get_vma_if_bpabi;
|
| 13837 |
|
|
case DT_SYMTAB:
|
| 13838 |
|
|
name = ".dynsym";
|
| 13839 |
|
|
goto get_vma_if_bpabi;
|
| 13840 |
|
|
case DT_VERSYM:
|
| 13841 |
|
|
name = ".gnu.version";
|
| 13842 |
|
|
goto get_vma_if_bpabi;
|
| 13843 |
|
|
case DT_VERDEF:
|
| 13844 |
|
|
name = ".gnu.version_d";
|
| 13845 |
|
|
goto get_vma_if_bpabi;
|
| 13846 |
|
|
case DT_VERNEED:
|
| 13847 |
|
|
name = ".gnu.version_r";
|
| 13848 |
|
|
goto get_vma_if_bpabi;
|
| 13849 |
|
|
|
| 13850 |
|
|
case DT_PLTGOT:
|
| 13851 |
|
|
name = ".got";
|
| 13852 |
|
|
goto get_vma;
|
| 13853 |
|
|
case DT_JMPREL:
|
| 13854 |
|
|
name = RELOC_SECTION (htab, ".plt");
|
| 13855 |
|
|
get_vma:
|
| 13856 |
|
|
s = bfd_get_section_by_name (output_bfd, name);
|
| 13857 |
|
|
BFD_ASSERT (s != NULL);
|
| 13858 |
|
|
if (!htab->symbian_p)
|
| 13859 |
|
|
dyn.d_un.d_ptr = s->vma;
|
| 13860 |
|
|
else
|
| 13861 |
|
|
/* In the BPABI, tags in the PT_DYNAMIC section point
|
| 13862 |
|
|
at the file offset, not the memory address, for the
|
| 13863 |
|
|
convenience of the post linker. */
|
| 13864 |
|
|
dyn.d_un.d_ptr = s->filepos;
|
| 13865 |
|
|
bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
|
| 13866 |
|
|
break;
|
| 13867 |
|
|
|
| 13868 |
|
|
get_vma_if_bpabi:
|
| 13869 |
|
|
if (htab->symbian_p)
|
| 13870 |
|
|
goto get_vma;
|
| 13871 |
|
|
break;
|
| 13872 |
|
|
|
| 13873 |
|
|
case DT_PLTRELSZ:
|
| 13874 |
|
|
s = htab->root.srelplt;
|
| 13875 |
|
|
BFD_ASSERT (s != NULL);
|
| 13876 |
|
|
dyn.d_un.d_val = s->size;
|
| 13877 |
|
|
bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
|
| 13878 |
|
|
break;
|
| 13879 |
|
|
|
| 13880 |
|
|
case DT_RELSZ:
|
| 13881 |
|
|
case DT_RELASZ:
|
| 13882 |
|
|
if (!htab->symbian_p)
|
| 13883 |
|
|
{
|
| 13884 |
|
|
/* My reading of the SVR4 ABI indicates that the
|
| 13885 |
|
|
procedure linkage table relocs (DT_JMPREL) should be
|
| 13886 |
|
|
included in the overall relocs (DT_REL). This is
|
| 13887 |
|
|
what Solaris does. However, UnixWare can not handle
|
| 13888 |
|
|
that case. Therefore, we override the DT_RELSZ entry
|
| 13889 |
|
|
here to make it not include the JMPREL relocs. Since
|
| 13890 |
|
|
the linker script arranges for .rel(a).plt to follow all
|
| 13891 |
|
|
other relocation sections, we don't have to worry
|
| 13892 |
|
|
about changing the DT_REL entry. */
|
| 13893 |
|
|
s = htab->root.srelplt;
|
| 13894 |
|
|
if (s != NULL)
|
| 13895 |
|
|
dyn.d_un.d_val -= s->size;
|
| 13896 |
|
|
bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
|
| 13897 |
|
|
break;
|
| 13898 |
|
|
}
|
| 13899 |
|
|
/* Fall through. */
|
| 13900 |
|
|
|
| 13901 |
|
|
case DT_REL:
|
| 13902 |
|
|
case DT_RELA:
|
| 13903 |
|
|
/* In the BPABI, the DT_REL tag must point at the file
|
| 13904 |
|
|
offset, not the VMA, of the first relocation
|
| 13905 |
|
|
section. So, we use code similar to that in
|
| 13906 |
|
|
elflink.c, but do not check for SHF_ALLOC on the
|
| 13907 |
|
|
relcoation section, since relocations sections are
|
| 13908 |
|
|
never allocated under the BPABI. The comments above
|
| 13909 |
|
|
about Unixware notwithstanding, we include all of the
|
| 13910 |
|
|
relocations here. */
|
| 13911 |
|
|
if (htab->symbian_p)
|
| 13912 |
|
|
{
|
| 13913 |
|
|
unsigned int i;
|
| 13914 |
|
|
type = ((dyn.d_tag == DT_REL || dyn.d_tag == DT_RELSZ)
|
| 13915 |
|
|
? SHT_REL : SHT_RELA);
|
| 13916 |
|
|
dyn.d_un.d_val = 0;
|
| 13917 |
|
|
for (i = 1; i < elf_numsections (output_bfd); i++)
|
| 13918 |
|
|
{
|
| 13919 |
|
|
Elf_Internal_Shdr *hdr
|
| 13920 |
|
|
= elf_elfsections (output_bfd)[i];
|
| 13921 |
|
|
if (hdr->sh_type == type)
|
| 13922 |
|
|
{
|
| 13923 |
|
|
if (dyn.d_tag == DT_RELSZ
|
| 13924 |
|
|
|| dyn.d_tag == DT_RELASZ)
|
| 13925 |
|
|
dyn.d_un.d_val += hdr->sh_size;
|
| 13926 |
|
|
else if ((ufile_ptr) hdr->sh_offset
|
| 13927 |
|
|
<= dyn.d_un.d_val - 1)
|
| 13928 |
|
|
dyn.d_un.d_val = hdr->sh_offset;
|
| 13929 |
|
|
}
|
| 13930 |
|
|
}
|
| 13931 |
|
|
bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
|
| 13932 |
|
|
}
|
| 13933 |
|
|
break;
|
| 13934 |
|
|
|
| 13935 |
|
|
case DT_TLSDESC_PLT:
|
| 13936 |
|
|
s = htab->root.splt;
|
| 13937 |
|
|
dyn.d_un.d_ptr = (s->output_section->vma + s->output_offset
|
| 13938 |
|
|
+ htab->dt_tlsdesc_plt);
|
| 13939 |
|
|
bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
|
| 13940 |
|
|
break;
|
| 13941 |
|
|
|
| 13942 |
|
|
case DT_TLSDESC_GOT:
|
| 13943 |
|
|
s = htab->root.sgot;
|
| 13944 |
|
|
dyn.d_un.d_ptr = (s->output_section->vma + s->output_offset
|
| 13945 |
|
|
+ htab->dt_tlsdesc_got);
|
| 13946 |
|
|
bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
|
| 13947 |
|
|
break;
|
| 13948 |
|
|
|
| 13949 |
|
|
/* Set the bottom bit of DT_INIT/FINI if the
|
| 13950 |
|
|
corresponding function is Thumb. */
|
| 13951 |
|
|
case DT_INIT:
|
| 13952 |
|
|
name = info->init_function;
|
| 13953 |
|
|
goto get_sym;
|
| 13954 |
|
|
case DT_FINI:
|
| 13955 |
|
|
name = info->fini_function;
|
| 13956 |
|
|
get_sym:
|
| 13957 |
|
|
/* If it wasn't set by elf_bfd_final_link
|
| 13958 |
|
|
then there is nothing to adjust. */
|
| 13959 |
|
|
if (dyn.d_un.d_val != 0)
|
| 13960 |
|
|
{
|
| 13961 |
|
|
struct elf_link_hash_entry * eh;
|
| 13962 |
|
|
|
| 13963 |
|
|
eh = elf_link_hash_lookup (elf_hash_table (info), name,
|
| 13964 |
|
|
FALSE, FALSE, TRUE);
|
| 13965 |
|
|
if (eh != NULL && eh->target_internal == ST_BRANCH_TO_THUMB)
|
| 13966 |
|
|
{
|
| 13967 |
|
|
dyn.d_un.d_val |= 1;
|
| 13968 |
|
|
bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
|
| 13969 |
|
|
}
|
| 13970 |
|
|
}
|
| 13971 |
|
|
break;
|
| 13972 |
|
|
}
|
| 13973 |
|
|
}
|
| 13974 |
|
|
|
| 13975 |
|
|
/* Fill in the first entry in the procedure linkage table. */
|
| 13976 |
|
|
if (splt->size > 0 && htab->plt_header_size)
|
| 13977 |
|
|
{
|
| 13978 |
|
|
const bfd_vma *plt0_entry;
|
| 13979 |
|
|
bfd_vma got_address, plt_address, got_displacement;
|
| 13980 |
|
|
|
| 13981 |
|
|
/* Calculate the addresses of the GOT and PLT. */
|
| 13982 |
|
|
got_address = sgot->output_section->vma + sgot->output_offset;
|
| 13983 |
|
|
plt_address = splt->output_section->vma + splt->output_offset;
|
| 13984 |
|
|
|
| 13985 |
|
|
if (htab->vxworks_p)
|
| 13986 |
|
|
{
|
| 13987 |
|
|
/* The VxWorks GOT is relocated by the dynamic linker.
|
| 13988 |
|
|
Therefore, we must emit relocations rather than simply
|
| 13989 |
|
|
computing the values now. */
|
| 13990 |
|
|
Elf_Internal_Rela rel;
|
| 13991 |
|
|
|
| 13992 |
|
|
plt0_entry = elf32_arm_vxworks_exec_plt0_entry;
|
| 13993 |
|
|
put_arm_insn (htab, output_bfd, plt0_entry[0],
|
| 13994 |
|
|
splt->contents + 0);
|
| 13995 |
|
|
put_arm_insn (htab, output_bfd, plt0_entry[1],
|
| 13996 |
|
|
splt->contents + 4);
|
| 13997 |
|
|
put_arm_insn (htab, output_bfd, plt0_entry[2],
|
| 13998 |
|
|
splt->contents + 8);
|
| 13999 |
|
|
bfd_put_32 (output_bfd, got_address, splt->contents + 12);
|
| 14000 |
|
|
|
| 14001 |
|
|
/* Generate a relocation for _GLOBAL_OFFSET_TABLE_. */
|
| 14002 |
|
|
rel.r_offset = plt_address + 12;
|
| 14003 |
|
|
rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_ARM_ABS32);
|
| 14004 |
|
|
rel.r_addend = 0;
|
| 14005 |
|
|
SWAP_RELOC_OUT (htab) (output_bfd, &rel,
|
| 14006 |
|
|
htab->srelplt2->contents);
|
| 14007 |
|
|
}
|
| 14008 |
|
|
else
|
| 14009 |
|
|
{
|
| 14010 |
|
|
got_displacement = got_address - (plt_address + 16);
|
| 14011 |
|
|
|
| 14012 |
|
|
plt0_entry = elf32_arm_plt0_entry;
|
| 14013 |
|
|
put_arm_insn (htab, output_bfd, plt0_entry[0],
|
| 14014 |
|
|
splt->contents + 0);
|
| 14015 |
|
|
put_arm_insn (htab, output_bfd, plt0_entry[1],
|
| 14016 |
|
|
splt->contents + 4);
|
| 14017 |
|
|
put_arm_insn (htab, output_bfd, plt0_entry[2],
|
| 14018 |
|
|
splt->contents + 8);
|
| 14019 |
|
|
put_arm_insn (htab, output_bfd, plt0_entry[3],
|
| 14020 |
|
|
splt->contents + 12);
|
| 14021 |
|
|
|
| 14022 |
|
|
#ifdef FOUR_WORD_PLT
|
| 14023 |
|
|
/* The displacement value goes in the otherwise-unused
|
| 14024 |
|
|
last word of the second entry. */
|
| 14025 |
|
|
bfd_put_32 (output_bfd, got_displacement, splt->contents + 28);
|
| 14026 |
|
|
#else
|
| 14027 |
|
|
bfd_put_32 (output_bfd, got_displacement, splt->contents + 16);
|
| 14028 |
|
|
#endif
|
| 14029 |
|
|
}
|
| 14030 |
|
|
}
|
| 14031 |
|
|
|
| 14032 |
|
|
/* UnixWare sets the entsize of .plt to 4, although that doesn't
|
| 14033 |
|
|
really seem like the right value. */
|
| 14034 |
|
|
if (splt->output_section->owner == output_bfd)
|
| 14035 |
|
|
elf_section_data (splt->output_section)->this_hdr.sh_entsize = 4;
|
| 14036 |
|
|
|
| 14037 |
|
|
if (htab->dt_tlsdesc_plt)
|
| 14038 |
|
|
{
|
| 14039 |
|
|
bfd_vma got_address
|
| 14040 |
|
|
= sgot->output_section->vma + sgot->output_offset;
|
| 14041 |
|
|
bfd_vma gotplt_address = (htab->root.sgot->output_section->vma
|
| 14042 |
|
|
+ htab->root.sgot->output_offset);
|
| 14043 |
|
|
bfd_vma plt_address
|
| 14044 |
|
|
= splt->output_section->vma + splt->output_offset;
|
| 14045 |
|
|
|
| 14046 |
|
|
arm_put_trampoline (htab, output_bfd,
|
| 14047 |
|
|
splt->contents + htab->dt_tlsdesc_plt,
|
| 14048 |
|
|
dl_tlsdesc_lazy_trampoline, 6);
|
| 14049 |
|
|
|
| 14050 |
|
|
bfd_put_32 (output_bfd,
|
| 14051 |
|
|
gotplt_address + htab->dt_tlsdesc_got
|
| 14052 |
|
|
- (plt_address + htab->dt_tlsdesc_plt)
|
| 14053 |
|
|
- dl_tlsdesc_lazy_trampoline[6],
|
| 14054 |
|
|
splt->contents + htab->dt_tlsdesc_plt + 24);
|
| 14055 |
|
|
bfd_put_32 (output_bfd,
|
| 14056 |
|
|
got_address - (plt_address + htab->dt_tlsdesc_plt)
|
| 14057 |
|
|
- dl_tlsdesc_lazy_trampoline[7],
|
| 14058 |
|
|
splt->contents + htab->dt_tlsdesc_plt + 24 + 4);
|
| 14059 |
|
|
}
|
| 14060 |
|
|
|
| 14061 |
|
|
if (htab->tls_trampoline)
|
| 14062 |
|
|
{
|
| 14063 |
|
|
arm_put_trampoline (htab, output_bfd,
|
| 14064 |
|
|
splt->contents + htab->tls_trampoline,
|
| 14065 |
|
|
tls_trampoline, 3);
|
| 14066 |
|
|
#ifdef FOUR_WORD_PLT
|
| 14067 |
|
|
bfd_put_32 (output_bfd, 0x00000000,
|
| 14068 |
|
|
splt->contents + htab->tls_trampoline + 12);
|
| 14069 |
|
|
#endif
|
| 14070 |
|
|
}
|
| 14071 |
|
|
|
| 14072 |
|
|
if (htab->vxworks_p && !info->shared && htab->root.splt->size > 0)
|
| 14073 |
|
|
{
|
| 14074 |
|
|
/* Correct the .rel(a).plt.unloaded relocations. They will have
|
| 14075 |
|
|
incorrect symbol indexes. */
|
| 14076 |
|
|
int num_plts;
|
| 14077 |
|
|
unsigned char *p;
|
| 14078 |
|
|
|
| 14079 |
|
|
num_plts = ((htab->root.splt->size - htab->plt_header_size)
|
| 14080 |
|
|
/ htab->plt_entry_size);
|
| 14081 |
|
|
p = htab->srelplt2->contents + RELOC_SIZE (htab);
|
| 14082 |
|
|
|
| 14083 |
|
|
for (; num_plts; num_plts--)
|
| 14084 |
|
|
{
|
| 14085 |
|
|
Elf_Internal_Rela rel;
|
| 14086 |
|
|
|
| 14087 |
|
|
SWAP_RELOC_IN (htab) (output_bfd, p, &rel);
|
| 14088 |
|
|
rel.r_info = ELF32_R_INFO (htab->root.hgot->indx, R_ARM_ABS32);
|
| 14089 |
|
|
SWAP_RELOC_OUT (htab) (output_bfd, &rel, p);
|
| 14090 |
|
|
p += RELOC_SIZE (htab);
|
| 14091 |
|
|
|
| 14092 |
|
|
SWAP_RELOC_IN (htab) (output_bfd, p, &rel);
|
| 14093 |
|
|
rel.r_info = ELF32_R_INFO (htab->root.hplt->indx, R_ARM_ABS32);
|
| 14094 |
|
|
SWAP_RELOC_OUT (htab) (output_bfd, &rel, p);
|
| 14095 |
|
|
p += RELOC_SIZE (htab);
|
| 14096 |
|
|
}
|
| 14097 |
|
|
}
|
| 14098 |
|
|
}
|
| 14099 |
|
|
|
| 14100 |
|
|
/* Fill in the first three entries in the global offset table. */
|
| 14101 |
|
|
if (sgot)
|
| 14102 |
|
|
{
|
| 14103 |
|
|
if (sgot->size > 0)
|
| 14104 |
|
|
{
|
| 14105 |
|
|
if (sdyn == NULL)
|
| 14106 |
|
|
bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
|
| 14107 |
|
|
else
|
| 14108 |
|
|
bfd_put_32 (output_bfd,
|
| 14109 |
|
|
sdyn->output_section->vma + sdyn->output_offset,
|
| 14110 |
|
|
sgot->contents);
|
| 14111 |
|
|
bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
|
| 14112 |
|
|
bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
|
| 14113 |
|
|
}
|
| 14114 |
|
|
|
| 14115 |
|
|
elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
|
| 14116 |
|
|
}
|
| 14117 |
|
|
|
| 14118 |
|
|
return TRUE;
|
| 14119 |
|
|
}
|
| 14120 |
|
|
|
| 14121 |
|
|
static void
|
| 14122 |
|
|
elf32_arm_post_process_headers (bfd * abfd, struct bfd_link_info * link_info ATTRIBUTE_UNUSED)
|
| 14123 |
|
|
{
|
| 14124 |
|
|
Elf_Internal_Ehdr * i_ehdrp; /* ELF file header, internal form. */
|
| 14125 |
|
|
struct elf32_arm_link_hash_table *globals;
|
| 14126 |
|
|
|
| 14127 |
|
|
i_ehdrp = elf_elfheader (abfd);
|
| 14128 |
|
|
|
| 14129 |
|
|
if (EF_ARM_EABI_VERSION (i_ehdrp->e_flags) == EF_ARM_EABI_UNKNOWN)
|
| 14130 |
|
|
i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_ARM;
|
| 14131 |
|
|
else
|
| 14132 |
|
|
i_ehdrp->e_ident[EI_OSABI] = 0;
|
| 14133 |
|
|
i_ehdrp->e_ident[EI_ABIVERSION] = ARM_ELF_ABI_VERSION;
|
| 14134 |
|
|
|
| 14135 |
|
|
if (link_info)
|
| 14136 |
|
|
{
|
| 14137 |
|
|
globals = elf32_arm_hash_table (link_info);
|
| 14138 |
|
|
if (globals != NULL && globals->byteswap_code)
|
| 14139 |
|
|
i_ehdrp->e_flags |= EF_ARM_BE8;
|
| 14140 |
|
|
}
|
| 14141 |
|
|
}
|
| 14142 |
|
|
|
| 14143 |
|
|
static enum elf_reloc_type_class
|
| 14144 |
|
|
elf32_arm_reloc_type_class (const Elf_Internal_Rela *rela)
|
| 14145 |
|
|
{
|
| 14146 |
|
|
switch ((int) ELF32_R_TYPE (rela->r_info))
|
| 14147 |
|
|
{
|
| 14148 |
|
|
case R_ARM_RELATIVE:
|
| 14149 |
|
|
return reloc_class_relative;
|
| 14150 |
|
|
case R_ARM_JUMP_SLOT:
|
| 14151 |
|
|
return reloc_class_plt;
|
| 14152 |
|
|
case R_ARM_COPY:
|
| 14153 |
|
|
return reloc_class_copy;
|
| 14154 |
|
|
default:
|
| 14155 |
|
|
return reloc_class_normal;
|
| 14156 |
|
|
}
|
| 14157 |
|
|
}
|
| 14158 |
|
|
|
| 14159 |
|
|
static void
|
| 14160 |
|
|
elf32_arm_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
|
| 14161 |
|
|
{
|
| 14162 |
|
|
bfd_arm_update_notes (abfd, ARM_NOTE_SECTION);
|
| 14163 |
|
|
}
|
| 14164 |
|
|
|
| 14165 |
|
|
/* Return TRUE if this is an unwinding table entry. */
|
| 14166 |
|
|
|
| 14167 |
|
|
static bfd_boolean
|
| 14168 |
|
|
is_arm_elf_unwind_section_name (bfd * abfd ATTRIBUTE_UNUSED, const char * name)
|
| 14169 |
|
|
{
|
| 14170 |
|
|
return (CONST_STRNEQ (name, ELF_STRING_ARM_unwind)
|
| 14171 |
|
|
|| CONST_STRNEQ (name, ELF_STRING_ARM_unwind_once));
|
| 14172 |
|
|
}
|
| 14173 |
|
|
|
| 14174 |
|
|
|
| 14175 |
|
|
/* Set the type and flags for an ARM section. We do this by
|
| 14176 |
|
|
the section name, which is a hack, but ought to work. */
|
| 14177 |
|
|
|
| 14178 |
|
|
static bfd_boolean
|
| 14179 |
|
|
elf32_arm_fake_sections (bfd * abfd, Elf_Internal_Shdr * hdr, asection * sec)
|
| 14180 |
|
|
{
|
| 14181 |
|
|
const char * name;
|
| 14182 |
|
|
|
| 14183 |
|
|
name = bfd_get_section_name (abfd, sec);
|
| 14184 |
|
|
|
| 14185 |
|
|
if (is_arm_elf_unwind_section_name (abfd, name))
|
| 14186 |
|
|
{
|
| 14187 |
|
|
hdr->sh_type = SHT_ARM_EXIDX;
|
| 14188 |
|
|
hdr->sh_flags |= SHF_LINK_ORDER;
|
| 14189 |
|
|
}
|
| 14190 |
|
|
return TRUE;
|
| 14191 |
|
|
}
|
| 14192 |
|
|
|
| 14193 |
|
|
/* Handle an ARM specific section when reading an object file. This is
|
| 14194 |
|
|
called when bfd_section_from_shdr finds a section with an unknown
|
| 14195 |
|
|
type. */
|
| 14196 |
|
|
|
| 14197 |
|
|
static bfd_boolean
|
| 14198 |
|
|
elf32_arm_section_from_shdr (bfd *abfd,
|
| 14199 |
|
|
Elf_Internal_Shdr * hdr,
|
| 14200 |
|
|
const char *name,
|
| 14201 |
|
|
int shindex)
|
| 14202 |
|
|
{
|
| 14203 |
|
|
/* There ought to be a place to keep ELF backend specific flags, but
|
| 14204 |
|
|
at the moment there isn't one. We just keep track of the
|
| 14205 |
|
|
sections by their name, instead. Fortunately, the ABI gives
|
| 14206 |
|
|
names for all the ARM specific sections, so we will probably get
|
| 14207 |
|
|
away with this. */
|
| 14208 |
|
|
switch (hdr->sh_type)
|
| 14209 |
|
|
{
|
| 14210 |
|
|
case SHT_ARM_EXIDX:
|
| 14211 |
|
|
case SHT_ARM_PREEMPTMAP:
|
| 14212 |
|
|
case SHT_ARM_ATTRIBUTES:
|
| 14213 |
|
|
break;
|
| 14214 |
|
|
|
| 14215 |
|
|
default:
|
| 14216 |
|
|
return FALSE;
|
| 14217 |
|
|
}
|
| 14218 |
|
|
|
| 14219 |
|
|
if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
|
| 14220 |
|
|
return FALSE;
|
| 14221 |
|
|
|
| 14222 |
|
|
return TRUE;
|
| 14223 |
|
|
}
|
| 14224 |
|
|
|
| 14225 |
|
|
static _arm_elf_section_data *
|
| 14226 |
|
|
get_arm_elf_section_data (asection * sec)
|
| 14227 |
|
|
{
|
| 14228 |
|
|
if (sec && sec->owner && is_arm_elf (sec->owner))
|
| 14229 |
|
|
return elf32_arm_section_data (sec);
|
| 14230 |
|
|
else
|
| 14231 |
|
|
return NULL;
|
| 14232 |
|
|
}
|
| 14233 |
|
|
|
| 14234 |
|
|
typedef struct
|
| 14235 |
|
|
{
|
| 14236 |
|
|
void *finfo;
|
| 14237 |
|
|
struct bfd_link_info *info;
|
| 14238 |
|
|
asection *sec;
|
| 14239 |
|
|
int sec_shndx;
|
| 14240 |
|
|
int (*func) (void *, const char *, Elf_Internal_Sym *,
|
| 14241 |
|
|
asection *, struct elf_link_hash_entry *);
|
| 14242 |
|
|
} output_arch_syminfo;
|
| 14243 |
|
|
|
| 14244 |
|
|
enum map_symbol_type
|
| 14245 |
|
|
{
|
| 14246 |
|
|
ARM_MAP_ARM,
|
| 14247 |
|
|
ARM_MAP_THUMB,
|
| 14248 |
|
|
ARM_MAP_DATA
|
| 14249 |
|
|
};
|
| 14250 |
|
|
|
| 14251 |
|
|
|
| 14252 |
|
|
/* Output a single mapping symbol. */
|
| 14253 |
|
|
|
| 14254 |
|
|
static bfd_boolean
|
| 14255 |
|
|
elf32_arm_output_map_sym (output_arch_syminfo *osi,
|
| 14256 |
|
|
enum map_symbol_type type,
|
| 14257 |
|
|
bfd_vma offset)
|
| 14258 |
|
|
{
|
| 14259 |
|
|
static const char *names[3] = {"$a", "$t", "$d"};
|
| 14260 |
|
|
Elf_Internal_Sym sym;
|
| 14261 |
|
|
|
| 14262 |
|
|
sym.st_value = osi->sec->output_section->vma
|
| 14263 |
|
|
+ osi->sec->output_offset
|
| 14264 |
|
|
+ offset;
|
| 14265 |
|
|
sym.st_size = 0;
|
| 14266 |
|
|
sym.st_other = 0;
|
| 14267 |
|
|
sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_NOTYPE);
|
| 14268 |
|
|
sym.st_shndx = osi->sec_shndx;
|
| 14269 |
|
|
sym.st_target_internal = 0;
|
| 14270 |
|
|
elf32_arm_section_map_add (osi->sec, names[type][1], offset);
|
| 14271 |
|
|
return osi->func (osi->finfo, names[type], &sym, osi->sec, NULL) == 1;
|
| 14272 |
|
|
}
|
| 14273 |
|
|
|
| 14274 |
|
|
/* Output mapping symbols for the PLT entry described by ROOT_PLT and ARM_PLT.
|
| 14275 |
|
|
IS_IPLT_ENTRY_P says whether the PLT is in .iplt rather than .plt. */
|
| 14276 |
|
|
|
| 14277 |
|
|
static bfd_boolean
|
| 14278 |
|
|
elf32_arm_output_plt_map_1 (output_arch_syminfo *osi,
|
| 14279 |
|
|
bfd_boolean is_iplt_entry_p,
|
| 14280 |
|
|
union gotplt_union *root_plt,
|
| 14281 |
|
|
struct arm_plt_info *arm_plt)
|
| 14282 |
|
|
{
|
| 14283 |
|
|
struct elf32_arm_link_hash_table *htab;
|
| 14284 |
|
|
bfd_vma addr, plt_header_size;
|
| 14285 |
|
|
|
| 14286 |
|
|
if (root_plt->offset == (bfd_vma) -1)
|
| 14287 |
|
|
return TRUE;
|
| 14288 |
|
|
|
| 14289 |
|
|
htab = elf32_arm_hash_table (osi->info);
|
| 14290 |
|
|
if (htab == NULL)
|
| 14291 |
|
|
return FALSE;
|
| 14292 |
|
|
|
| 14293 |
|
|
if (is_iplt_entry_p)
|
| 14294 |
|
|
{
|
| 14295 |
|
|
osi->sec = htab->root.iplt;
|
| 14296 |
|
|
plt_header_size = 0;
|
| 14297 |
|
|
}
|
| 14298 |
|
|
else
|
| 14299 |
|
|
{
|
| 14300 |
|
|
osi->sec = htab->root.splt;
|
| 14301 |
|
|
plt_header_size = htab->plt_header_size;
|
| 14302 |
|
|
}
|
| 14303 |
|
|
osi->sec_shndx = (_bfd_elf_section_from_bfd_section
|
| 14304 |
|
|
(osi->info->output_bfd, osi->sec->output_section));
|
| 14305 |
|
|
|
| 14306 |
|
|
addr = root_plt->offset & -2;
|
| 14307 |
|
|
if (htab->symbian_p)
|
| 14308 |
|
|
{
|
| 14309 |
|
|
if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr))
|
| 14310 |
|
|
return FALSE;
|
| 14311 |
|
|
if (!elf32_arm_output_map_sym (osi, ARM_MAP_DATA, addr + 4))
|
| 14312 |
|
|
return FALSE;
|
| 14313 |
|
|
}
|
| 14314 |
|
|
else if (htab->vxworks_p)
|
| 14315 |
|
|
{
|
| 14316 |
|
|
if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr))
|
| 14317 |
|
|
return FALSE;
|
| 14318 |
|
|
if (!elf32_arm_output_map_sym (osi, ARM_MAP_DATA, addr + 8))
|
| 14319 |
|
|
return FALSE;
|
| 14320 |
|
|
if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr + 12))
|
| 14321 |
|
|
return FALSE;
|
| 14322 |
|
|
if (!elf32_arm_output_map_sym (osi, ARM_MAP_DATA, addr + 20))
|
| 14323 |
|
|
return FALSE;
|
| 14324 |
|
|
}
|
| 14325 |
|
|
else
|
| 14326 |
|
|
{
|
| 14327 |
|
|
bfd_boolean thumb_stub_p;
|
| 14328 |
|
|
|
| 14329 |
|
|
thumb_stub_p = elf32_arm_plt_needs_thumb_stub_p (osi->info, arm_plt);
|
| 14330 |
|
|
if (thumb_stub_p)
|
| 14331 |
|
|
{
|
| 14332 |
|
|
if (!elf32_arm_output_map_sym (osi, ARM_MAP_THUMB, addr - 4))
|
| 14333 |
|
|
return FALSE;
|
| 14334 |
|
|
}
|
| 14335 |
|
|
#ifdef FOUR_WORD_PLT
|
| 14336 |
|
|
if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr))
|
| 14337 |
|
|
return FALSE;
|
| 14338 |
|
|
if (!elf32_arm_output_map_sym (osi, ARM_MAP_DATA, addr + 12))
|
| 14339 |
|
|
return FALSE;
|
| 14340 |
|
|
#else
|
| 14341 |
|
|
/* A three-word PLT with no Thumb thunk contains only Arm code,
|
| 14342 |
|
|
so only need to output a mapping symbol for the first PLT entry and
|
| 14343 |
|
|
entries with thumb thunks. */
|
| 14344 |
|
|
if (thumb_stub_p || addr == plt_header_size)
|
| 14345 |
|
|
{
|
| 14346 |
|
|
if (!elf32_arm_output_map_sym (osi, ARM_MAP_ARM, addr))
|
| 14347 |
|
|
return FALSE;
|
| 14348 |
|
|
}
|
| 14349 |
|
|
#endif
|
| 14350 |
|
|
}
|
| 14351 |
|
|
|
| 14352 |
|
|
return TRUE;
|
| 14353 |
|
|
}
|
| 14354 |
|
|
|
| 14355 |
|
|
/* Output mapping symbols for PLT entries associated with H. */
|
| 14356 |
|
|
|
| 14357 |
|
|
static bfd_boolean
|
| 14358 |
|
|
elf32_arm_output_plt_map (struct elf_link_hash_entry *h, void *inf)
|
| 14359 |
|
|
{
|
| 14360 |
|
|
output_arch_syminfo *osi = (output_arch_syminfo *) inf;
|
| 14361 |
|
|
struct elf32_arm_link_hash_entry *eh;
|
| 14362 |
|
|
|
| 14363 |
|
|
if (h->root.type == bfd_link_hash_indirect)
|
| 14364 |
|
|
return TRUE;
|
| 14365 |
|
|
|
| 14366 |
|
|
if (h->root.type == bfd_link_hash_warning)
|
| 14367 |
|
|
/* When warning symbols are created, they **replace** the "real"
|
| 14368 |
|
|
entry in the hash table, thus we never get to see the real
|
| 14369 |
|
|
symbol in a hash traversal. So look at it now. */
|
| 14370 |
|
|
h = (struct elf_link_hash_entry *) h->root.u.i.link;
|
| 14371 |
|
|
|
| 14372 |
|
|
eh = (struct elf32_arm_link_hash_entry *) h;
|
| 14373 |
|
|
return elf32_arm_output_plt_map_1 (osi, SYMBOL_CALLS_LOCAL (osi->info, h),
|
| 14374 |
|
|
&h->plt, &eh->plt);
|
| 14375 |
|
|
}
|
| 14376 |
|
|
|
| 14377 |
|
|
/* Output a single local symbol for a generated stub. */
|
| 14378 |
|
|
|
| 14379 |
|
|
static bfd_boolean
|
| 14380 |
|
|
elf32_arm_output_stub_sym (output_arch_syminfo *osi, const char *name,
|
| 14381 |
|
|
bfd_vma offset, bfd_vma size)
|
| 14382 |
|
|
{
|
| 14383 |
|
|
Elf_Internal_Sym sym;
|
| 14384 |
|
|
|
| 14385 |
|
|
sym.st_value = osi->sec->output_section->vma
|
| 14386 |
|
|
+ osi->sec->output_offset
|
| 14387 |
|
|
+ offset;
|
| 14388 |
|
|
sym.st_size = size;
|
| 14389 |
|
|
sym.st_other = 0;
|
| 14390 |
|
|
sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_FUNC);
|
| 14391 |
|
|
sym.st_shndx = osi->sec_shndx;
|
| 14392 |
|
|
sym.st_target_internal = 0;
|
| 14393 |
|
|
return osi->func (osi->finfo, name, &sym, osi->sec, NULL) == 1;
|
| 14394 |
|
|
}
|
| 14395 |
|
|
|
| 14396 |
|
|
static bfd_boolean
|
| 14397 |
|
|
arm_map_one_stub (struct bfd_hash_entry * gen_entry,
|
| 14398 |
|
|
void * in_arg)
|
| 14399 |
|
|
{
|
| 14400 |
|
|
struct elf32_arm_stub_hash_entry *stub_entry;
|
| 14401 |
|
|
asection *stub_sec;
|
| 14402 |
|
|
bfd_vma addr;
|
| 14403 |
|
|
char *stub_name;
|
| 14404 |
|
|
output_arch_syminfo *osi;
|
| 14405 |
|
|
const insn_sequence *template_sequence;
|
| 14406 |
|
|
enum stub_insn_type prev_type;
|
| 14407 |
|
|
int size;
|
| 14408 |
|
|
int i;
|
| 14409 |
|
|
enum map_symbol_type sym_type;
|
| 14410 |
|
|
|
| 14411 |
|
|
/* Massage our args to the form they really have. */
|
| 14412 |
|
|
stub_entry = (struct elf32_arm_stub_hash_entry *) gen_entry;
|
| 14413 |
|
|
osi = (output_arch_syminfo *) in_arg;
|
| 14414 |
|
|
|
| 14415 |
|
|
stub_sec = stub_entry->stub_sec;
|
| 14416 |
|
|
|
| 14417 |
|
|
/* Ensure this stub is attached to the current section being
|
| 14418 |
|
|
processed. */
|
| 14419 |
|
|
if (stub_sec != osi->sec)
|
| 14420 |
|
|
return TRUE;
|
| 14421 |
|
|
|
| 14422 |
|
|
addr = (bfd_vma) stub_entry->stub_offset;
|
| 14423 |
|
|
stub_name = stub_entry->output_name;
|
| 14424 |
|
|
|
| 14425 |
|
|
template_sequence = stub_entry->stub_template;
|
| 14426 |
|
|
switch (template_sequence[0].type)
|
| 14427 |
|
|
{
|
| 14428 |
|
|
case ARM_TYPE:
|
| 14429 |
|
|
if (!elf32_arm_output_stub_sym (osi, stub_name, addr, stub_entry->stub_size))
|
| 14430 |
|
|
return FALSE;
|
| 14431 |
|
|
break;
|
| 14432 |
|
|
case THUMB16_TYPE:
|
| 14433 |
|
|
case THUMB32_TYPE:
|
| 14434 |
|
|
if (!elf32_arm_output_stub_sym (osi, stub_name, addr | 1,
|
| 14435 |
|
|
stub_entry->stub_size))
|
| 14436 |
|
|
return FALSE;
|
| 14437 |
|
|
break;
|
| 14438 |
|
|
default:
|
| 14439 |
|
|
BFD_FAIL ();
|
| 14440 |
|
|
return 0;
|
| 14441 |
|
|
}
|
| 14442 |
|
|
|
| 14443 |
|
|
prev_type = DATA_TYPE;
|
| 14444 |
|
|
size = 0;
|
| 14445 |
|
|
for (i = 0; i < stub_entry->stub_template_size; i++)
|
| 14446 |
|
|
{
|
| 14447 |
|
|
switch (template_sequence[i].type)
|
| 14448 |
|
|
{
|
| 14449 |
|
|
case ARM_TYPE:
|
| 14450 |
|
|
sym_type = ARM_MAP_ARM;
|
| 14451 |
|
|
break;
|
| 14452 |
|
|
|
| 14453 |
|
|
case THUMB16_TYPE:
|
| 14454 |
|
|
case THUMB32_TYPE:
|
| 14455 |
|
|
sym_type = ARM_MAP_THUMB;
|
| 14456 |
|
|
break;
|
| 14457 |
|
|
|
| 14458 |
|
|
case DATA_TYPE:
|
| 14459 |
|
|
sym_type = ARM_MAP_DATA;
|
| 14460 |
|
|
break;
|
| 14461 |
|
|
|
| 14462 |
|
|
default:
|
| 14463 |
|
|
BFD_FAIL ();
|
| 14464 |
|
|
return FALSE;
|
| 14465 |
|
|
}
|
| 14466 |
|
|
|
| 14467 |
|
|
if (template_sequence[i].type != prev_type)
|
| 14468 |
|
|
{
|
| 14469 |
|
|
prev_type = template_sequence[i].type;
|
| 14470 |
|
|
if (!elf32_arm_output_map_sym (osi, sym_type, addr + size))
|
| 14471 |
|
|
return FALSE;
|
| 14472 |
|
|
}
|
| 14473 |
|
|
|
| 14474 |
|
|
switch (template_sequence[i].type)
|
| 14475 |
|
|
{
|
| 14476 |
|
|
case ARM_TYPE:
|
| 14477 |
|
|
case THUMB32_TYPE:
|
| 14478 |
|
|
size += 4;
|
| 14479 |
|
|
break;
|
| 14480 |
|
|
|
| 14481 |
|
|
case THUMB16_TYPE:
|
| 14482 |
|
|
size += 2;
|
| 14483 |
|
|
break;
|
| 14484 |
|
|
|
| 14485 |
|
|
case DATA_TYPE:
|
| 14486 |
|
|
size += 4;
|
| 14487 |
|
|
break;
|
| 14488 |
|
|
|
| 14489 |
|
|
default:
|
| 14490 |
|
|
BFD_FAIL ();
|
| 14491 |
|
|
return FALSE;
|
| 14492 |
|
|
}
|
| 14493 |
|
|
}
|
| 14494 |
|
|
|
| 14495 |
|
|
return TRUE;
|
| 14496 |
|
|
}
|
| 14497 |
|
|
|
| 14498 |
|
|
/* Output mapping symbols for linker generated sections,
|
| 14499 |
|
|
and for those data-only sections that do not have a
|
| 14500 |
|
|
$d. */
|
| 14501 |
|
|
|
| 14502 |
|
|
static bfd_boolean
|
| 14503 |
|
|
elf32_arm_output_arch_local_syms (bfd *output_bfd,
|
| 14504 |
|
|
struct bfd_link_info *info,
|
| 14505 |
|
|
void *finfo,
|
| 14506 |
|
|
int (*func) (void *, const char *,
|
| 14507 |
|
|
Elf_Internal_Sym *,
|
| 14508 |
|
|
asection *,
|
| 14509 |
|
|
struct elf_link_hash_entry *))
|
| 14510 |
|
|
{
|
| 14511 |
|
|
output_arch_syminfo osi;
|
| 14512 |
|
|
struct elf32_arm_link_hash_table *htab;
|
| 14513 |
|
|
bfd_vma offset;
|
| 14514 |
|
|
bfd_size_type size;
|
| 14515 |
|
|
bfd *input_bfd;
|
| 14516 |
|
|
|
| 14517 |
|
|
htab = elf32_arm_hash_table (info);
|
| 14518 |
|
|
if (htab == NULL)
|
| 14519 |
|
|
return FALSE;
|
| 14520 |
|
|
|
| 14521 |
|
|
check_use_blx (htab);
|
| 14522 |
|
|
|
| 14523 |
|
|
osi.finfo = finfo;
|
| 14524 |
|
|
osi.info = info;
|
| 14525 |
|
|
osi.func = func;
|
| 14526 |
|
|
|
| 14527 |
|
|
/* Add a $d mapping symbol to data-only sections that
|
| 14528 |
|
|
don't have any mapping symbol. This may result in (harmless) redundant
|
| 14529 |
|
|
mapping symbols. */
|
| 14530 |
|
|
for (input_bfd = info->input_bfds;
|
| 14531 |
|
|
input_bfd != NULL;
|
| 14532 |
|
|
input_bfd = input_bfd->link_next)
|
| 14533 |
|
|
{
|
| 14534 |
|
|
if ((input_bfd->flags & (BFD_LINKER_CREATED | HAS_SYMS)) == HAS_SYMS)
|
| 14535 |
|
|
for (osi.sec = input_bfd->sections;
|
| 14536 |
|
|
osi.sec != NULL;
|
| 14537 |
|
|
osi.sec = osi.sec->next)
|
| 14538 |
|
|
{
|
| 14539 |
|
|
if (osi.sec->output_section != NULL
|
| 14540 |
|
|
&& ((osi.sec->output_section->flags & (SEC_ALLOC | SEC_CODE))
|
| 14541 |
|
|
!= 0)
|
| 14542 |
|
|
&& (osi.sec->flags & (SEC_HAS_CONTENTS | SEC_LINKER_CREATED))
|
| 14543 |
|
|
== SEC_HAS_CONTENTS
|
| 14544 |
|
|
&& get_arm_elf_section_data (osi.sec) != NULL
|
| 14545 |
|
|
&& get_arm_elf_section_data (osi.sec)->mapcount == 0
|
| 14546 |
163 |
khays |
&& osi.sec->size > 0
|
| 14547 |
|
|
&& (osi.sec->flags & SEC_EXCLUDE) == 0)
|
| 14548 |
14 |
khays |
{
|
| 14549 |
|
|
osi.sec_shndx = _bfd_elf_section_from_bfd_section
|
| 14550 |
|
|
(output_bfd, osi.sec->output_section);
|
| 14551 |
|
|
if (osi.sec_shndx != (int)SHN_BAD)
|
| 14552 |
|
|
elf32_arm_output_map_sym (&osi, ARM_MAP_DATA, 0);
|
| 14553 |
|
|
}
|
| 14554 |
|
|
}
|
| 14555 |
|
|
}
|
| 14556 |
|
|
|
| 14557 |
|
|
/* ARM->Thumb glue. */
|
| 14558 |
|
|
if (htab->arm_glue_size > 0)
|
| 14559 |
|
|
{
|
| 14560 |
|
|
osi.sec = bfd_get_section_by_name (htab->bfd_of_glue_owner,
|
| 14561 |
|
|
ARM2THUMB_GLUE_SECTION_NAME);
|
| 14562 |
|
|
|
| 14563 |
|
|
osi.sec_shndx = _bfd_elf_section_from_bfd_section
|
| 14564 |
|
|
(output_bfd, osi.sec->output_section);
|
| 14565 |
|
|
if (info->shared || htab->root.is_relocatable_executable
|
| 14566 |
|
|
|| htab->pic_veneer)
|
| 14567 |
|
|
size = ARM2THUMB_PIC_GLUE_SIZE;
|
| 14568 |
|
|
else if (htab->use_blx)
|
| 14569 |
|
|
size = ARM2THUMB_V5_STATIC_GLUE_SIZE;
|
| 14570 |
|
|
else
|
| 14571 |
|
|
size = ARM2THUMB_STATIC_GLUE_SIZE;
|
| 14572 |
|
|
|
| 14573 |
|
|
for (offset = 0; offset < htab->arm_glue_size; offset += size)
|
| 14574 |
|
|
{
|
| 14575 |
|
|
elf32_arm_output_map_sym (&osi, ARM_MAP_ARM, offset);
|
| 14576 |
|
|
elf32_arm_output_map_sym (&osi, ARM_MAP_DATA, offset + size - 4);
|
| 14577 |
|
|
}
|
| 14578 |
|
|
}
|
| 14579 |
|
|
|
| 14580 |
|
|
/* Thumb->ARM glue. */
|
| 14581 |
|
|
if (htab->thumb_glue_size > 0)
|
| 14582 |
|
|
{
|
| 14583 |
|
|
osi.sec = bfd_get_section_by_name (htab->bfd_of_glue_owner,
|
| 14584 |
|
|
THUMB2ARM_GLUE_SECTION_NAME);
|
| 14585 |
|
|
|
| 14586 |
|
|
osi.sec_shndx = _bfd_elf_section_from_bfd_section
|
| 14587 |
|
|
(output_bfd, osi.sec->output_section);
|
| 14588 |
|
|
size = THUMB2ARM_GLUE_SIZE;
|
| 14589 |
|
|
|
| 14590 |
|
|
for (offset = 0; offset < htab->thumb_glue_size; offset += size)
|
| 14591 |
|
|
{
|
| 14592 |
|
|
elf32_arm_output_map_sym (&osi, ARM_MAP_THUMB, offset);
|
| 14593 |
|
|
elf32_arm_output_map_sym (&osi, ARM_MAP_ARM, offset + 4);
|
| 14594 |
|
|
}
|
| 14595 |
|
|
}
|
| 14596 |
|
|
|
| 14597 |
|
|
/* ARMv4 BX veneers. */
|
| 14598 |
|
|
if (htab->bx_glue_size > 0)
|
| 14599 |
|
|
{
|
| 14600 |
|
|
osi.sec = bfd_get_section_by_name (htab->bfd_of_glue_owner,
|
| 14601 |
|
|
ARM_BX_GLUE_SECTION_NAME);
|
| 14602 |
|
|
|
| 14603 |
|
|
osi.sec_shndx = _bfd_elf_section_from_bfd_section
|
| 14604 |
|
|
(output_bfd, osi.sec->output_section);
|
| 14605 |
|
|
|
| 14606 |
|
|
elf32_arm_output_map_sym (&osi, ARM_MAP_ARM, 0);
|
| 14607 |
|
|
}
|
| 14608 |
|
|
|
| 14609 |
|
|
/* Long calls stubs. */
|
| 14610 |
|
|
if (htab->stub_bfd && htab->stub_bfd->sections)
|
| 14611 |
|
|
{
|
| 14612 |
|
|
asection* stub_sec;
|
| 14613 |
|
|
|
| 14614 |
|
|
for (stub_sec = htab->stub_bfd->sections;
|
| 14615 |
|
|
stub_sec != NULL;
|
| 14616 |
|
|
stub_sec = stub_sec->next)
|
| 14617 |
|
|
{
|
| 14618 |
|
|
/* Ignore non-stub sections. */
|
| 14619 |
|
|
if (!strstr (stub_sec->name, STUB_SUFFIX))
|
| 14620 |
|
|
continue;
|
| 14621 |
|
|
|
| 14622 |
|
|
osi.sec = stub_sec;
|
| 14623 |
|
|
|
| 14624 |
|
|
osi.sec_shndx = _bfd_elf_section_from_bfd_section
|
| 14625 |
|
|
(output_bfd, osi.sec->output_section);
|
| 14626 |
|
|
|
| 14627 |
|
|
bfd_hash_traverse (&htab->stub_hash_table, arm_map_one_stub, &osi);
|
| 14628 |
|
|
}
|
| 14629 |
|
|
}
|
| 14630 |
|
|
|
| 14631 |
|
|
/* Finally, output mapping symbols for the PLT. */
|
| 14632 |
|
|
if (htab->root.splt && htab->root.splt->size > 0)
|
| 14633 |
|
|
{
|
| 14634 |
|
|
osi.sec = htab->root.splt;
|
| 14635 |
|
|
osi.sec_shndx = (_bfd_elf_section_from_bfd_section
|
| 14636 |
|
|
(output_bfd, osi.sec->output_section));
|
| 14637 |
|
|
|
| 14638 |
|
|
/* Output mapping symbols for the plt header. SymbianOS does not have a
|
| 14639 |
|
|
plt header. */
|
| 14640 |
|
|
if (htab->vxworks_p)
|
| 14641 |
|
|
{
|
| 14642 |
|
|
/* VxWorks shared libraries have no PLT header. */
|
| 14643 |
|
|
if (!info->shared)
|
| 14644 |
|
|
{
|
| 14645 |
|
|
if (!elf32_arm_output_map_sym (&osi, ARM_MAP_ARM, 0))
|
| 14646 |
|
|
return FALSE;
|
| 14647 |
|
|
if (!elf32_arm_output_map_sym (&osi, ARM_MAP_DATA, 12))
|
| 14648 |
|
|
return FALSE;
|
| 14649 |
|
|
}
|
| 14650 |
|
|
}
|
| 14651 |
|
|
else if (!htab->symbian_p)
|
| 14652 |
|
|
{
|
| 14653 |
|
|
if (!elf32_arm_output_map_sym (&osi, ARM_MAP_ARM, 0))
|
| 14654 |
|
|
return FALSE;
|
| 14655 |
|
|
#ifndef FOUR_WORD_PLT
|
| 14656 |
|
|
if (!elf32_arm_output_map_sym (&osi, ARM_MAP_DATA, 16))
|
| 14657 |
|
|
return FALSE;
|
| 14658 |
|
|
#endif
|
| 14659 |
|
|
}
|
| 14660 |
|
|
}
|
| 14661 |
|
|
if ((htab->root.splt && htab->root.splt->size > 0)
|
| 14662 |
|
|
|| (htab->root.iplt && htab->root.iplt->size > 0))
|
| 14663 |
|
|
{
|
| 14664 |
|
|
elf_link_hash_traverse (&htab->root, elf32_arm_output_plt_map, &osi);
|
| 14665 |
|
|
for (input_bfd = info->input_bfds;
|
| 14666 |
|
|
input_bfd != NULL;
|
| 14667 |
|
|
input_bfd = input_bfd->link_next)
|
| 14668 |
|
|
{
|
| 14669 |
|
|
struct arm_local_iplt_info **local_iplt;
|
| 14670 |
|
|
unsigned int i, num_syms;
|
| 14671 |
|
|
|
| 14672 |
|
|
local_iplt = elf32_arm_local_iplt (input_bfd);
|
| 14673 |
|
|
if (local_iplt != NULL)
|
| 14674 |
|
|
{
|
| 14675 |
|
|
num_syms = elf_symtab_hdr (input_bfd).sh_info;
|
| 14676 |
|
|
for (i = 0; i < num_syms; i++)
|
| 14677 |
|
|
if (local_iplt[i] != NULL
|
| 14678 |
|
|
&& !elf32_arm_output_plt_map_1 (&osi, TRUE,
|
| 14679 |
|
|
&local_iplt[i]->root,
|
| 14680 |
|
|
&local_iplt[i]->arm))
|
| 14681 |
|
|
return FALSE;
|
| 14682 |
|
|
}
|
| 14683 |
|
|
}
|
| 14684 |
|
|
}
|
| 14685 |
|
|
if (htab->dt_tlsdesc_plt != 0)
|
| 14686 |
|
|
{
|
| 14687 |
|
|
/* Mapping symbols for the lazy tls trampoline. */
|
| 14688 |
|
|
if (!elf32_arm_output_map_sym (&osi, ARM_MAP_ARM, htab->dt_tlsdesc_plt))
|
| 14689 |
|
|
return FALSE;
|
| 14690 |
|
|
|
| 14691 |
|
|
if (!elf32_arm_output_map_sym (&osi, ARM_MAP_DATA,
|
| 14692 |
|
|
htab->dt_tlsdesc_plt + 24))
|
| 14693 |
|
|
return FALSE;
|
| 14694 |
|
|
}
|
| 14695 |
|
|
if (htab->tls_trampoline != 0)
|
| 14696 |
|
|
{
|
| 14697 |
|
|
/* Mapping symbols for the tls trampoline. */
|
| 14698 |
|
|
if (!elf32_arm_output_map_sym (&osi, ARM_MAP_ARM, htab->tls_trampoline))
|
| 14699 |
|
|
return FALSE;
|
| 14700 |
|
|
#ifdef FOUR_WORD_PLT
|
| 14701 |
|
|
if (!elf32_arm_output_map_sym (&osi, ARM_MAP_DATA,
|
| 14702 |
|
|
htab->tls_trampoline + 12))
|
| 14703 |
|
|
return FALSE;
|
| 14704 |
|
|
#endif
|
| 14705 |
|
|
}
|
| 14706 |
|
|
|
| 14707 |
|
|
return TRUE;
|
| 14708 |
|
|
}
|
| 14709 |
|
|
|
| 14710 |
|
|
/* Allocate target specific section data. */
|
| 14711 |
|
|
|
| 14712 |
|
|
static bfd_boolean
|
| 14713 |
|
|
elf32_arm_new_section_hook (bfd *abfd, asection *sec)
|
| 14714 |
|
|
{
|
| 14715 |
|
|
if (!sec->used_by_bfd)
|
| 14716 |
|
|
{
|
| 14717 |
|
|
_arm_elf_section_data *sdata;
|
| 14718 |
|
|
bfd_size_type amt = sizeof (*sdata);
|
| 14719 |
|
|
|
| 14720 |
|
|
sdata = (_arm_elf_section_data *) bfd_zalloc (abfd, amt);
|
| 14721 |
|
|
if (sdata == NULL)
|
| 14722 |
|
|
return FALSE;
|
| 14723 |
|
|
sec->used_by_bfd = sdata;
|
| 14724 |
|
|
}
|
| 14725 |
|
|
|
| 14726 |
|
|
return _bfd_elf_new_section_hook (abfd, sec);
|
| 14727 |
|
|
}
|
| 14728 |
|
|
|
| 14729 |
|
|
|
| 14730 |
|
|
/* Used to order a list of mapping symbols by address. */
|
| 14731 |
|
|
|
| 14732 |
|
|
static int
|
| 14733 |
|
|
elf32_arm_compare_mapping (const void * a, const void * b)
|
| 14734 |
|
|
{
|
| 14735 |
|
|
const elf32_arm_section_map *amap = (const elf32_arm_section_map *) a;
|
| 14736 |
|
|
const elf32_arm_section_map *bmap = (const elf32_arm_section_map *) b;
|
| 14737 |
|
|
|
| 14738 |
|
|
if (amap->vma > bmap->vma)
|
| 14739 |
|
|
return 1;
|
| 14740 |
|
|
else if (amap->vma < bmap->vma)
|
| 14741 |
|
|
return -1;
|
| 14742 |
|
|
else if (amap->type > bmap->type)
|
| 14743 |
|
|
/* Ensure results do not depend on the host qsort for objects with
|
| 14744 |
|
|
multiple mapping symbols at the same address by sorting on type
|
| 14745 |
|
|
after vma. */
|
| 14746 |
|
|
return 1;
|
| 14747 |
|
|
else if (amap->type < bmap->type)
|
| 14748 |
|
|
return -1;
|
| 14749 |
|
|
else
|
| 14750 |
|
|
return 0;
|
| 14751 |
|
|
}
|
| 14752 |
|
|
|
| 14753 |
|
|
/* Add OFFSET to lower 31 bits of ADDR, leaving other bits unmodified. */
|
| 14754 |
|
|
|
| 14755 |
|
|
static unsigned long
|
| 14756 |
|
|
offset_prel31 (unsigned long addr, bfd_vma offset)
|
| 14757 |
|
|
{
|
| 14758 |
|
|
return (addr & ~0x7ffffffful) | ((addr + offset) & 0x7ffffffful);
|
| 14759 |
|
|
}
|
| 14760 |
|
|
|
| 14761 |
|
|
/* Copy an .ARM.exidx table entry, adding OFFSET to (applied) PREL31
|
| 14762 |
|
|
relocations. */
|
| 14763 |
|
|
|
| 14764 |
|
|
static void
|
| 14765 |
|
|
copy_exidx_entry (bfd *output_bfd, bfd_byte *to, bfd_byte *from, bfd_vma offset)
|
| 14766 |
|
|
{
|
| 14767 |
|
|
unsigned long first_word = bfd_get_32 (output_bfd, from);
|
| 14768 |
|
|
unsigned long second_word = bfd_get_32 (output_bfd, from + 4);
|
| 14769 |
|
|
|
| 14770 |
|
|
/* High bit of first word is supposed to be zero. */
|
| 14771 |
|
|
if ((first_word & 0x80000000ul) == 0)
|
| 14772 |
|
|
first_word = offset_prel31 (first_word, offset);
|
| 14773 |
|
|
|
| 14774 |
|
|
/* If the high bit of the first word is clear, and the bit pattern is not 0x1
|
| 14775 |
|
|
(EXIDX_CANTUNWIND), this is an offset to an .ARM.extab entry. */
|
| 14776 |
|
|
if ((second_word != 0x1) && ((second_word & 0x80000000ul) == 0))
|
| 14777 |
|
|
second_word = offset_prel31 (second_word, offset);
|
| 14778 |
|
|
|
| 14779 |
|
|
bfd_put_32 (output_bfd, first_word, to);
|
| 14780 |
|
|
bfd_put_32 (output_bfd, second_word, to + 4);
|
| 14781 |
|
|
}
|
| 14782 |
|
|
|
| 14783 |
|
|
/* Data for make_branch_to_a8_stub(). */
|
| 14784 |
|
|
|
| 14785 |
|
|
struct a8_branch_to_stub_data {
|
| 14786 |
|
|
asection *writing_section;
|
| 14787 |
|
|
bfd_byte *contents;
|
| 14788 |
|
|
};
|
| 14789 |
|
|
|
| 14790 |
|
|
|
| 14791 |
|
|
/* Helper to insert branches to Cortex-A8 erratum stubs in the right
|
| 14792 |
|
|
places for a particular section. */
|
| 14793 |
|
|
|
| 14794 |
|
|
static bfd_boolean
|
| 14795 |
|
|
make_branch_to_a8_stub (struct bfd_hash_entry *gen_entry,
|
| 14796 |
|
|
void *in_arg)
|
| 14797 |
|
|
{
|
| 14798 |
|
|
struct elf32_arm_stub_hash_entry *stub_entry;
|
| 14799 |
|
|
struct a8_branch_to_stub_data *data;
|
| 14800 |
|
|
bfd_byte *contents;
|
| 14801 |
|
|
unsigned long branch_insn;
|
| 14802 |
|
|
bfd_vma veneered_insn_loc, veneer_entry_loc;
|
| 14803 |
|
|
bfd_signed_vma branch_offset;
|
| 14804 |
|
|
bfd *abfd;
|
| 14805 |
|
|
unsigned int target;
|
| 14806 |
|
|
|
| 14807 |
|
|
stub_entry = (struct elf32_arm_stub_hash_entry *) gen_entry;
|
| 14808 |
|
|
data = (struct a8_branch_to_stub_data *) in_arg;
|
| 14809 |
|
|
|
| 14810 |
|
|
if (stub_entry->target_section != data->writing_section
|
| 14811 |
|
|
|| stub_entry->stub_type < arm_stub_a8_veneer_lwm)
|
| 14812 |
|
|
return TRUE;
|
| 14813 |
|
|
|
| 14814 |
|
|
contents = data->contents;
|
| 14815 |
|
|
|
| 14816 |
|
|
veneered_insn_loc = stub_entry->target_section->output_section->vma
|
| 14817 |
|
|
+ stub_entry->target_section->output_offset
|
| 14818 |
|
|
+ stub_entry->target_value;
|
| 14819 |
|
|
|
| 14820 |
|
|
veneer_entry_loc = stub_entry->stub_sec->output_section->vma
|
| 14821 |
|
|
+ stub_entry->stub_sec->output_offset
|
| 14822 |
|
|
+ stub_entry->stub_offset;
|
| 14823 |
|
|
|
| 14824 |
|
|
if (stub_entry->stub_type == arm_stub_a8_veneer_blx)
|
| 14825 |
|
|
veneered_insn_loc &= ~3u;
|
| 14826 |
|
|
|
| 14827 |
|
|
branch_offset = veneer_entry_loc - veneered_insn_loc - 4;
|
| 14828 |
|
|
|
| 14829 |
|
|
abfd = stub_entry->target_section->owner;
|
| 14830 |
|
|
target = stub_entry->target_value;
|
| 14831 |
|
|
|
| 14832 |
|
|
/* We attempt to avoid this condition by setting stubs_always_after_branch
|
| 14833 |
|
|
in elf32_arm_size_stubs if we've enabled the Cortex-A8 erratum workaround.
|
| 14834 |
|
|
This check is just to be on the safe side... */
|
| 14835 |
|
|
if ((veneered_insn_loc & ~0xfff) == (veneer_entry_loc & ~0xfff))
|
| 14836 |
|
|
{
|
| 14837 |
|
|
(*_bfd_error_handler) (_("%B: error: Cortex-A8 erratum stub is "
|
| 14838 |
|
|
"allocated in unsafe location"), abfd);
|
| 14839 |
|
|
return FALSE;
|
| 14840 |
|
|
}
|
| 14841 |
|
|
|
| 14842 |
|
|
switch (stub_entry->stub_type)
|
| 14843 |
|
|
{
|
| 14844 |
|
|
case arm_stub_a8_veneer_b:
|
| 14845 |
|
|
case arm_stub_a8_veneer_b_cond:
|
| 14846 |
|
|
branch_insn = 0xf0009000;
|
| 14847 |
|
|
goto jump24;
|
| 14848 |
|
|
|
| 14849 |
|
|
case arm_stub_a8_veneer_blx:
|
| 14850 |
|
|
branch_insn = 0xf000e800;
|
| 14851 |
|
|
goto jump24;
|
| 14852 |
|
|
|
| 14853 |
|
|
case arm_stub_a8_veneer_bl:
|
| 14854 |
|
|
{
|
| 14855 |
|
|
unsigned int i1, j1, i2, j2, s;
|
| 14856 |
|
|
|
| 14857 |
|
|
branch_insn = 0xf000d000;
|
| 14858 |
|
|
|
| 14859 |
|
|
jump24:
|
| 14860 |
|
|
if (branch_offset < -16777216 || branch_offset > 16777214)
|
| 14861 |
|
|
{
|
| 14862 |
|
|
/* There's not much we can do apart from complain if this
|
| 14863 |
|
|
happens. */
|
| 14864 |
|
|
(*_bfd_error_handler) (_("%B: error: Cortex-A8 erratum stub out "
|
| 14865 |
|
|
"of range (input file too large)"), abfd);
|
| 14866 |
|
|
return FALSE;
|
| 14867 |
|
|
}
|
| 14868 |
|
|
|
| 14869 |
|
|
/* i1 = not(j1 eor s), so:
|
| 14870 |
|
|
not i1 = j1 eor s
|
| 14871 |
|
|
j1 = (not i1) eor s. */
|
| 14872 |
|
|
|
| 14873 |
|
|
branch_insn |= (branch_offset >> 1) & 0x7ff;
|
| 14874 |
|
|
branch_insn |= ((branch_offset >> 12) & 0x3ff) << 16;
|
| 14875 |
|
|
i2 = (branch_offset >> 22) & 1;
|
| 14876 |
|
|
i1 = (branch_offset >> 23) & 1;
|
| 14877 |
|
|
s = (branch_offset >> 24) & 1;
|
| 14878 |
|
|
j1 = (!i1) ^ s;
|
| 14879 |
|
|
j2 = (!i2) ^ s;
|
| 14880 |
|
|
branch_insn |= j2 << 11;
|
| 14881 |
|
|
branch_insn |= j1 << 13;
|
| 14882 |
|
|
branch_insn |= s << 26;
|
| 14883 |
|
|
}
|
| 14884 |
|
|
break;
|
| 14885 |
|
|
|
| 14886 |
|
|
default:
|
| 14887 |
|
|
BFD_FAIL ();
|
| 14888 |
|
|
return FALSE;
|
| 14889 |
|
|
}
|
| 14890 |
|
|
|
| 14891 |
|
|
bfd_put_16 (abfd, (branch_insn >> 16) & 0xffff, &contents[target]);
|
| 14892 |
|
|
bfd_put_16 (abfd, branch_insn & 0xffff, &contents[target + 2]);
|
| 14893 |
|
|
|
| 14894 |
|
|
return TRUE;
|
| 14895 |
|
|
}
|
| 14896 |
|
|
|
| 14897 |
|
|
/* Do code byteswapping. Return FALSE afterwards so that the section is
|
| 14898 |
|
|
written out as normal. */
|
| 14899 |
|
|
|
| 14900 |
|
|
static bfd_boolean
|
| 14901 |
|
|
elf32_arm_write_section (bfd *output_bfd,
|
| 14902 |
|
|
struct bfd_link_info *link_info,
|
| 14903 |
|
|
asection *sec,
|
| 14904 |
|
|
bfd_byte *contents)
|
| 14905 |
|
|
{
|
| 14906 |
|
|
unsigned int mapcount, errcount;
|
| 14907 |
|
|
_arm_elf_section_data *arm_data;
|
| 14908 |
|
|
struct elf32_arm_link_hash_table *globals = elf32_arm_hash_table (link_info);
|
| 14909 |
|
|
elf32_arm_section_map *map;
|
| 14910 |
|
|
elf32_vfp11_erratum_list *errnode;
|
| 14911 |
|
|
bfd_vma ptr;
|
| 14912 |
|
|
bfd_vma end;
|
| 14913 |
|
|
bfd_vma offset = sec->output_section->vma + sec->output_offset;
|
| 14914 |
|
|
bfd_byte tmp;
|
| 14915 |
|
|
unsigned int i;
|
| 14916 |
|
|
|
| 14917 |
|
|
if (globals == NULL)
|
| 14918 |
|
|
return FALSE;
|
| 14919 |
|
|
|
| 14920 |
|
|
/* If this section has not been allocated an _arm_elf_section_data
|
| 14921 |
|
|
structure then we cannot record anything. */
|
| 14922 |
|
|
arm_data = get_arm_elf_section_data (sec);
|
| 14923 |
|
|
if (arm_data == NULL)
|
| 14924 |
|
|
return FALSE;
|
| 14925 |
|
|
|
| 14926 |
|
|
mapcount = arm_data->mapcount;
|
| 14927 |
|
|
map = arm_data->map;
|
| 14928 |
|
|
errcount = arm_data->erratumcount;
|
| 14929 |
|
|
|
| 14930 |
|
|
if (errcount != 0)
|
| 14931 |
|
|
{
|
| 14932 |
|
|
unsigned int endianflip = bfd_big_endian (output_bfd) ? 3 : 0;
|
| 14933 |
|
|
|
| 14934 |
|
|
for (errnode = arm_data->erratumlist; errnode != 0;
|
| 14935 |
|
|
errnode = errnode->next)
|
| 14936 |
|
|
{
|
| 14937 |
|
|
bfd_vma target = errnode->vma - offset;
|
| 14938 |
|
|
|
| 14939 |
|
|
switch (errnode->type)
|
| 14940 |
|
|
{
|
| 14941 |
|
|
case VFP11_ERRATUM_BRANCH_TO_ARM_VENEER:
|
| 14942 |
|
|
{
|
| 14943 |
|
|
bfd_vma branch_to_veneer;
|
| 14944 |
|
|
/* Original condition code of instruction, plus bit mask for
|
| 14945 |
|
|
ARM B instruction. */
|
| 14946 |
|
|
unsigned int insn = (errnode->u.b.vfp_insn & 0xf0000000)
|
| 14947 |
|
|
| 0x0a000000;
|
| 14948 |
|
|
|
| 14949 |
|
|
/* The instruction is before the label. */
|
| 14950 |
|
|
target -= 4;
|
| 14951 |
|
|
|
| 14952 |
|
|
/* Above offset included in -4 below. */
|
| 14953 |
|
|
branch_to_veneer = errnode->u.b.veneer->vma
|
| 14954 |
|
|
- errnode->vma - 4;
|
| 14955 |
|
|
|
| 14956 |
|
|
if ((signed) branch_to_veneer < -(1 << 25)
|
| 14957 |
|
|
|| (signed) branch_to_veneer >= (1 << 25))
|
| 14958 |
|
|
(*_bfd_error_handler) (_("%B: error: VFP11 veneer out of "
|
| 14959 |
|
|
"range"), output_bfd);
|
| 14960 |
|
|
|
| 14961 |
|
|
insn |= (branch_to_veneer >> 2) & 0xffffff;
|
| 14962 |
|
|
contents[endianflip ^ target] = insn & 0xff;
|
| 14963 |
|
|
contents[endianflip ^ (target + 1)] = (insn >> 8) & 0xff;
|
| 14964 |
|
|
contents[endianflip ^ (target + 2)] = (insn >> 16) & 0xff;
|
| 14965 |
|
|
contents[endianflip ^ (target + 3)] = (insn >> 24) & 0xff;
|
| 14966 |
|
|
}
|
| 14967 |
|
|
break;
|
| 14968 |
|
|
|
| 14969 |
|
|
case VFP11_ERRATUM_ARM_VENEER:
|
| 14970 |
|
|
{
|
| 14971 |
|
|
bfd_vma branch_from_veneer;
|
| 14972 |
|
|
unsigned int insn;
|
| 14973 |
|
|
|
| 14974 |
|
|
/* Take size of veneer into account. */
|
| 14975 |
|
|
branch_from_veneer = errnode->u.v.branch->vma
|
| 14976 |
|
|
- errnode->vma - 12;
|
| 14977 |
|
|
|
| 14978 |
|
|
if ((signed) branch_from_veneer < -(1 << 25)
|
| 14979 |
|
|
|| (signed) branch_from_veneer >= (1 << 25))
|
| 14980 |
|
|
(*_bfd_error_handler) (_("%B: error: VFP11 veneer out of "
|
| 14981 |
|
|
"range"), output_bfd);
|
| 14982 |
|
|
|
| 14983 |
|
|
/* Original instruction. */
|
| 14984 |
|
|
insn = errnode->u.v.branch->u.b.vfp_insn;
|
| 14985 |
|
|
contents[endianflip ^ target] = insn & 0xff;
|
| 14986 |
|
|
contents[endianflip ^ (target + 1)] = (insn >> 8) & 0xff;
|
| 14987 |
|
|
contents[endianflip ^ (target + 2)] = (insn >> 16) & 0xff;
|
| 14988 |
|
|
contents[endianflip ^ (target + 3)] = (insn >> 24) & 0xff;
|
| 14989 |
|
|
|
| 14990 |
|
|
/* Branch back to insn after original insn. */
|
| 14991 |
|
|
insn = 0xea000000 | ((branch_from_veneer >> 2) & 0xffffff);
|
| 14992 |
|
|
contents[endianflip ^ (target + 4)] = insn & 0xff;
|
| 14993 |
|
|
contents[endianflip ^ (target + 5)] = (insn >> 8) & 0xff;
|
| 14994 |
|
|
contents[endianflip ^ (target + 6)] = (insn >> 16) & 0xff;
|
| 14995 |
|
|
contents[endianflip ^ (target + 7)] = (insn >> 24) & 0xff;
|
| 14996 |
|
|
}
|
| 14997 |
|
|
break;
|
| 14998 |
|
|
|
| 14999 |
|
|
default:
|
| 15000 |
|
|
abort ();
|
| 15001 |
|
|
}
|
| 15002 |
|
|
}
|
| 15003 |
|
|
}
|
| 15004 |
|
|
|
| 15005 |
|
|
if (arm_data->elf.this_hdr.sh_type == SHT_ARM_EXIDX)
|
| 15006 |
|
|
{
|
| 15007 |
|
|
arm_unwind_table_edit *edit_node
|
| 15008 |
|
|
= arm_data->u.exidx.unwind_edit_list;
|
| 15009 |
|
|
/* Now, sec->size is the size of the section we will write. The original
|
| 15010 |
|
|
size (before we merged duplicate entries and inserted EXIDX_CANTUNWIND
|
| 15011 |
|
|
markers) was sec->rawsize. (This isn't the case if we perform no
|
| 15012 |
|
|
edits, then rawsize will be zero and we should use size). */
|
| 15013 |
|
|
bfd_byte *edited_contents = (bfd_byte *) bfd_malloc (sec->size);
|
| 15014 |
|
|
unsigned int input_size = sec->rawsize ? sec->rawsize : sec->size;
|
| 15015 |
|
|
unsigned int in_index, out_index;
|
| 15016 |
|
|
bfd_vma add_to_offsets = 0;
|
| 15017 |
|
|
|
| 15018 |
|
|
for (in_index = 0, out_index = 0; in_index * 8 < input_size || edit_node;)
|
| 15019 |
|
|
{
|
| 15020 |
|
|
if (edit_node)
|
| 15021 |
|
|
{
|
| 15022 |
|
|
unsigned int edit_index = edit_node->index;
|
| 15023 |
|
|
|
| 15024 |
|
|
if (in_index < edit_index && in_index * 8 < input_size)
|
| 15025 |
|
|
{
|
| 15026 |
|
|
copy_exidx_entry (output_bfd, edited_contents + out_index * 8,
|
| 15027 |
|
|
contents + in_index * 8, add_to_offsets);
|
| 15028 |
|
|
out_index++;
|
| 15029 |
|
|
in_index++;
|
| 15030 |
|
|
}
|
| 15031 |
|
|
else if (in_index == edit_index
|
| 15032 |
|
|
|| (in_index * 8 >= input_size
|
| 15033 |
|
|
&& edit_index == UINT_MAX))
|
| 15034 |
|
|
{
|
| 15035 |
|
|
switch (edit_node->type)
|
| 15036 |
|
|
{
|
| 15037 |
|
|
case DELETE_EXIDX_ENTRY:
|
| 15038 |
|
|
in_index++;
|
| 15039 |
|
|
add_to_offsets += 8;
|
| 15040 |
|
|
break;
|
| 15041 |
|
|
|
| 15042 |
|
|
case INSERT_EXIDX_CANTUNWIND_AT_END:
|
| 15043 |
|
|
{
|
| 15044 |
|
|
asection *text_sec = edit_node->linked_section;
|
| 15045 |
|
|
bfd_vma text_offset = text_sec->output_section->vma
|
| 15046 |
|
|
+ text_sec->output_offset
|
| 15047 |
|
|
+ text_sec->size;
|
| 15048 |
|
|
bfd_vma exidx_offset = offset + out_index * 8;
|
| 15049 |
|
|
unsigned long prel31_offset;
|
| 15050 |
|
|
|
| 15051 |
|
|
/* Note: this is meant to be equivalent to an
|
| 15052 |
|
|
R_ARM_PREL31 relocation. These synthetic
|
| 15053 |
|
|
EXIDX_CANTUNWIND markers are not relocated by the
|
| 15054 |
|
|
usual BFD method. */
|
| 15055 |
|
|
prel31_offset = (text_offset - exidx_offset)
|
| 15056 |
|
|
& 0x7ffffffful;
|
| 15057 |
|
|
|
| 15058 |
|
|
/* First address we can't unwind. */
|
| 15059 |
|
|
bfd_put_32 (output_bfd, prel31_offset,
|
| 15060 |
|
|
&edited_contents[out_index * 8]);
|
| 15061 |
|
|
|
| 15062 |
|
|
/* Code for EXIDX_CANTUNWIND. */
|
| 15063 |
|
|
bfd_put_32 (output_bfd, 0x1,
|
| 15064 |
|
|
&edited_contents[out_index * 8 + 4]);
|
| 15065 |
|
|
|
| 15066 |
|
|
out_index++;
|
| 15067 |
|
|
add_to_offsets -= 8;
|
| 15068 |
|
|
}
|
| 15069 |
|
|
break;
|
| 15070 |
|
|
}
|
| 15071 |
|
|
|
| 15072 |
|
|
edit_node = edit_node->next;
|
| 15073 |
|
|
}
|
| 15074 |
|
|
}
|
| 15075 |
|
|
else
|
| 15076 |
|
|
{
|
| 15077 |
|
|
/* No more edits, copy remaining entries verbatim. */
|
| 15078 |
|
|
copy_exidx_entry (output_bfd, edited_contents + out_index * 8,
|
| 15079 |
|
|
contents + in_index * 8, add_to_offsets);
|
| 15080 |
|
|
out_index++;
|
| 15081 |
|
|
in_index++;
|
| 15082 |
|
|
}
|
| 15083 |
|
|
}
|
| 15084 |
|
|
|
| 15085 |
|
|
if (!(sec->flags & SEC_EXCLUDE) && !(sec->flags & SEC_NEVER_LOAD))
|
| 15086 |
|
|
bfd_set_section_contents (output_bfd, sec->output_section,
|
| 15087 |
|
|
edited_contents,
|
| 15088 |
|
|
(file_ptr) sec->output_offset, sec->size);
|
| 15089 |
|
|
|
| 15090 |
|
|
return TRUE;
|
| 15091 |
|
|
}
|
| 15092 |
|
|
|
| 15093 |
|
|
/* Fix code to point to Cortex-A8 erratum stubs. */
|
| 15094 |
|
|
if (globals->fix_cortex_a8)
|
| 15095 |
|
|
{
|
| 15096 |
|
|
struct a8_branch_to_stub_data data;
|
| 15097 |
|
|
|
| 15098 |
|
|
data.writing_section = sec;
|
| 15099 |
|
|
data.contents = contents;
|
| 15100 |
|
|
|
| 15101 |
|
|
bfd_hash_traverse (&globals->stub_hash_table, make_branch_to_a8_stub,
|
| 15102 |
|
|
&data);
|
| 15103 |
|
|
}
|
| 15104 |
|
|
|
| 15105 |
|
|
if (mapcount == 0)
|
| 15106 |
|
|
return FALSE;
|
| 15107 |
|
|
|
| 15108 |
|
|
if (globals->byteswap_code)
|
| 15109 |
|
|
{
|
| 15110 |
|
|
qsort (map, mapcount, sizeof (* map), elf32_arm_compare_mapping);
|
| 15111 |
|
|
|
| 15112 |
|
|
ptr = map[0].vma;
|
| 15113 |
|
|
for (i = 0; i < mapcount; i++)
|
| 15114 |
|
|
{
|
| 15115 |
|
|
if (i == mapcount - 1)
|
| 15116 |
|
|
end = sec->size;
|
| 15117 |
|
|
else
|
| 15118 |
|
|
end = map[i + 1].vma;
|
| 15119 |
|
|
|
| 15120 |
|
|
switch (map[i].type)
|
| 15121 |
|
|
{
|
| 15122 |
|
|
case 'a':
|
| 15123 |
|
|
/* Byte swap code words. */
|
| 15124 |
|
|
while (ptr + 3 < end)
|
| 15125 |
|
|
{
|
| 15126 |
|
|
tmp = contents[ptr];
|
| 15127 |
|
|
contents[ptr] = contents[ptr + 3];
|
| 15128 |
|
|
contents[ptr + 3] = tmp;
|
| 15129 |
|
|
tmp = contents[ptr + 1];
|
| 15130 |
|
|
contents[ptr + 1] = contents[ptr + 2];
|
| 15131 |
|
|
contents[ptr + 2] = tmp;
|
| 15132 |
|
|
ptr += 4;
|
| 15133 |
|
|
}
|
| 15134 |
|
|
break;
|
| 15135 |
|
|
|
| 15136 |
|
|
case 't':
|
| 15137 |
|
|
/* Byte swap code halfwords. */
|
| 15138 |
|
|
while (ptr + 1 < end)
|
| 15139 |
|
|
{
|
| 15140 |
|
|
tmp = contents[ptr];
|
| 15141 |
|
|
contents[ptr] = contents[ptr + 1];
|
| 15142 |
|
|
contents[ptr + 1] = tmp;
|
| 15143 |
|
|
ptr += 2;
|
| 15144 |
|
|
}
|
| 15145 |
|
|
break;
|
| 15146 |
|
|
|
| 15147 |
|
|
case 'd':
|
| 15148 |
|
|
/* Leave data alone. */
|
| 15149 |
|
|
break;
|
| 15150 |
|
|
}
|
| 15151 |
|
|
ptr = end;
|
| 15152 |
|
|
}
|
| 15153 |
|
|
}
|
| 15154 |
|
|
|
| 15155 |
|
|
free (map);
|
| 15156 |
|
|
arm_data->mapcount = -1;
|
| 15157 |
|
|
arm_data->mapsize = 0;
|
| 15158 |
|
|
arm_data->map = NULL;
|
| 15159 |
|
|
|
| 15160 |
|
|
return FALSE;
|
| 15161 |
|
|
}
|
| 15162 |
|
|
|
| 15163 |
|
|
/* Mangle thumb function symbols as we read them in. */
|
| 15164 |
|
|
|
| 15165 |
|
|
static bfd_boolean
|
| 15166 |
|
|
elf32_arm_swap_symbol_in (bfd * abfd,
|
| 15167 |
|
|
const void *psrc,
|
| 15168 |
|
|
const void *pshn,
|
| 15169 |
|
|
Elf_Internal_Sym *dst)
|
| 15170 |
|
|
{
|
| 15171 |
|
|
if (!bfd_elf32_swap_symbol_in (abfd, psrc, pshn, dst))
|
| 15172 |
|
|
return FALSE;
|
| 15173 |
|
|
|
| 15174 |
|
|
/* New EABI objects mark thumb function symbols by setting the low bit of
|
| 15175 |
|
|
the address. */
|
| 15176 |
|
|
if (ELF_ST_TYPE (dst->st_info) == STT_FUNC
|
| 15177 |
|
|
|| ELF_ST_TYPE (dst->st_info) == STT_GNU_IFUNC)
|
| 15178 |
|
|
{
|
| 15179 |
|
|
if (dst->st_value & 1)
|
| 15180 |
|
|
{
|
| 15181 |
|
|
dst->st_value &= ~(bfd_vma) 1;
|
| 15182 |
|
|
dst->st_target_internal = ST_BRANCH_TO_THUMB;
|
| 15183 |
|
|
}
|
| 15184 |
|
|
else
|
| 15185 |
|
|
dst->st_target_internal = ST_BRANCH_TO_ARM;
|
| 15186 |
|
|
}
|
| 15187 |
|
|
else if (ELF_ST_TYPE (dst->st_info) == STT_ARM_TFUNC)
|
| 15188 |
|
|
{
|
| 15189 |
|
|
dst->st_info = ELF_ST_INFO (ELF_ST_BIND (dst->st_info), STT_FUNC);
|
| 15190 |
|
|
dst->st_target_internal = ST_BRANCH_TO_THUMB;
|
| 15191 |
|
|
}
|
| 15192 |
|
|
else if (ELF_ST_TYPE (dst->st_info) == STT_SECTION)
|
| 15193 |
|
|
dst->st_target_internal = ST_BRANCH_LONG;
|
| 15194 |
|
|
else
|
| 15195 |
|
|
dst->st_target_internal = ST_BRANCH_UNKNOWN;
|
| 15196 |
|
|
|
| 15197 |
|
|
return TRUE;
|
| 15198 |
|
|
}
|
| 15199 |
|
|
|
| 15200 |
|
|
|
| 15201 |
|
|
/* Mangle thumb function symbols as we write them out. */
|
| 15202 |
|
|
|
| 15203 |
|
|
static void
|
| 15204 |
|
|
elf32_arm_swap_symbol_out (bfd *abfd,
|
| 15205 |
|
|
const Elf_Internal_Sym *src,
|
| 15206 |
|
|
void *cdst,
|
| 15207 |
|
|
void *shndx)
|
| 15208 |
|
|
{
|
| 15209 |
|
|
Elf_Internal_Sym newsym;
|
| 15210 |
|
|
|
| 15211 |
|
|
/* We convert STT_ARM_TFUNC symbols into STT_FUNC with the low bit
|
| 15212 |
|
|
of the address set, as per the new EABI. We do this unconditionally
|
| 15213 |
|
|
because objcopy does not set the elf header flags until after
|
| 15214 |
|
|
it writes out the symbol table. */
|
| 15215 |
|
|
if (src->st_target_internal == ST_BRANCH_TO_THUMB)
|
| 15216 |
|
|
{
|
| 15217 |
|
|
newsym = *src;
|
| 15218 |
|
|
if (ELF_ST_TYPE (src->st_info) != STT_GNU_IFUNC)
|
| 15219 |
|
|
newsym.st_info = ELF_ST_INFO (ELF_ST_BIND (src->st_info), STT_FUNC);
|
| 15220 |
|
|
if (newsym.st_shndx != SHN_UNDEF)
|
| 15221 |
|
|
{
|
| 15222 |
|
|
/* Do this only for defined symbols. At link type, the static
|
| 15223 |
|
|
linker will simulate the work of dynamic linker of resolving
|
| 15224 |
|
|
symbols and will carry over the thumbness of found symbols to
|
| 15225 |
|
|
the output symbol table. It's not clear how it happens, but
|
| 15226 |
|
|
the thumbness of undefined symbols can well be different at
|
| 15227 |
|
|
runtime, and writing '1' for them will be confusing for users
|
| 15228 |
|
|
and possibly for dynamic linker itself.
|
| 15229 |
|
|
*/
|
| 15230 |
|
|
newsym.st_value |= 1;
|
| 15231 |
|
|
}
|
| 15232 |
|
|
|
| 15233 |
|
|
src = &newsym;
|
| 15234 |
|
|
}
|
| 15235 |
|
|
bfd_elf32_swap_symbol_out (abfd, src, cdst, shndx);
|
| 15236 |
|
|
}
|
| 15237 |
|
|
|
| 15238 |
|
|
/* Add the PT_ARM_EXIDX program header. */
|
| 15239 |
|
|
|
| 15240 |
|
|
static bfd_boolean
|
| 15241 |
|
|
elf32_arm_modify_segment_map (bfd *abfd,
|
| 15242 |
|
|
struct bfd_link_info *info ATTRIBUTE_UNUSED)
|
| 15243 |
|
|
{
|
| 15244 |
|
|
struct elf_segment_map *m;
|
| 15245 |
|
|
asection *sec;
|
| 15246 |
|
|
|
| 15247 |
|
|
sec = bfd_get_section_by_name (abfd, ".ARM.exidx");
|
| 15248 |
|
|
if (sec != NULL && (sec->flags & SEC_LOAD) != 0)
|
| 15249 |
|
|
{
|
| 15250 |
|
|
/* If there is already a PT_ARM_EXIDX header, then we do not
|
| 15251 |
|
|
want to add another one. This situation arises when running
|
| 15252 |
|
|
"strip"; the input binary already has the header. */
|
| 15253 |
|
|
m = elf_tdata (abfd)->segment_map;
|
| 15254 |
|
|
while (m && m->p_type != PT_ARM_EXIDX)
|
| 15255 |
|
|
m = m->next;
|
| 15256 |
|
|
if (!m)
|
| 15257 |
|
|
{
|
| 15258 |
|
|
m = (struct elf_segment_map *)
|
| 15259 |
|
|
bfd_zalloc (abfd, sizeof (struct elf_segment_map));
|
| 15260 |
|
|
if (m == NULL)
|
| 15261 |
|
|
return FALSE;
|
| 15262 |
|
|
m->p_type = PT_ARM_EXIDX;
|
| 15263 |
|
|
m->count = 1;
|
| 15264 |
|
|
m->sections[0] = sec;
|
| 15265 |
|
|
|
| 15266 |
|
|
m->next = elf_tdata (abfd)->segment_map;
|
| 15267 |
|
|
elf_tdata (abfd)->segment_map = m;
|
| 15268 |
|
|
}
|
| 15269 |
|
|
}
|
| 15270 |
|
|
|
| 15271 |
|
|
return TRUE;
|
| 15272 |
|
|
}
|
| 15273 |
|
|
|
| 15274 |
|
|
/* We may add a PT_ARM_EXIDX program header. */
|
| 15275 |
|
|
|
| 15276 |
|
|
static int
|
| 15277 |
|
|
elf32_arm_additional_program_headers (bfd *abfd,
|
| 15278 |
|
|
struct bfd_link_info *info ATTRIBUTE_UNUSED)
|
| 15279 |
|
|
{
|
| 15280 |
|
|
asection *sec;
|
| 15281 |
|
|
|
| 15282 |
|
|
sec = bfd_get_section_by_name (abfd, ".ARM.exidx");
|
| 15283 |
|
|
if (sec != NULL && (sec->flags & SEC_LOAD) != 0)
|
| 15284 |
|
|
return 1;
|
| 15285 |
|
|
else
|
| 15286 |
|
|
return 0;
|
| 15287 |
|
|
}
|
| 15288 |
|
|
|
| 15289 |
|
|
/* Hook called by the linker routine which adds symbols from an object
|
| 15290 |
|
|
file. */
|
| 15291 |
|
|
|
| 15292 |
|
|
static bfd_boolean
|
| 15293 |
|
|
elf32_arm_add_symbol_hook (bfd *abfd, struct bfd_link_info *info,
|
| 15294 |
|
|
Elf_Internal_Sym *sym, const char **namep,
|
| 15295 |
|
|
flagword *flagsp, asection **secp, bfd_vma *valp)
|
| 15296 |
|
|
{
|
| 15297 |
|
|
if ((abfd->flags & DYNAMIC) == 0
|
| 15298 |
|
|
&& (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
|
| 15299 |
|
|
|| ELF_ST_BIND (sym->st_info) == STB_GNU_UNIQUE))
|
| 15300 |
|
|
elf_tdata (info->output_bfd)->has_gnu_symbols = TRUE;
|
| 15301 |
|
|
|
| 15302 |
|
|
if (elf32_arm_hash_table (info)->vxworks_p
|
| 15303 |
|
|
&& !elf_vxworks_add_symbol_hook (abfd, info, sym, namep,
|
| 15304 |
|
|
flagsp, secp, valp))
|
| 15305 |
|
|
return FALSE;
|
| 15306 |
|
|
|
| 15307 |
|
|
return TRUE;
|
| 15308 |
|
|
}
|
| 15309 |
|
|
|
| 15310 |
|
|
/* We use this to override swap_symbol_in and swap_symbol_out. */
|
| 15311 |
|
|
const struct elf_size_info elf32_arm_size_info =
|
| 15312 |
|
|
{
|
| 15313 |
|
|
sizeof (Elf32_External_Ehdr),
|
| 15314 |
|
|
sizeof (Elf32_External_Phdr),
|
| 15315 |
|
|
sizeof (Elf32_External_Shdr),
|
| 15316 |
|
|
sizeof (Elf32_External_Rel),
|
| 15317 |
|
|
sizeof (Elf32_External_Rela),
|
| 15318 |
|
|
sizeof (Elf32_External_Sym),
|
| 15319 |
|
|
sizeof (Elf32_External_Dyn),
|
| 15320 |
|
|
sizeof (Elf_External_Note),
|
| 15321 |
|
|
4,
|
| 15322 |
|
|
1,
|
| 15323 |
|
|
32, 2,
|
| 15324 |
|
|
ELFCLASS32, EV_CURRENT,
|
| 15325 |
|
|
bfd_elf32_write_out_phdrs,
|
| 15326 |
|
|
bfd_elf32_write_shdrs_and_ehdr,
|
| 15327 |
|
|
bfd_elf32_checksum_contents,
|
| 15328 |
|
|
bfd_elf32_write_relocs,
|
| 15329 |
|
|
elf32_arm_swap_symbol_in,
|
| 15330 |
|
|
elf32_arm_swap_symbol_out,
|
| 15331 |
|
|
bfd_elf32_slurp_reloc_table,
|
| 15332 |
|
|
bfd_elf32_slurp_symbol_table,
|
| 15333 |
|
|
bfd_elf32_swap_dyn_in,
|
| 15334 |
|
|
bfd_elf32_swap_dyn_out,
|
| 15335 |
|
|
bfd_elf32_swap_reloc_in,
|
| 15336 |
|
|
bfd_elf32_swap_reloc_out,
|
| 15337 |
|
|
bfd_elf32_swap_reloca_in,
|
| 15338 |
|
|
bfd_elf32_swap_reloca_out
|
| 15339 |
|
|
};
|
| 15340 |
|
|
|
| 15341 |
|
|
#define ELF_ARCH bfd_arch_arm
|
| 15342 |
|
|
#define ELF_TARGET_ID ARM_ELF_DATA
|
| 15343 |
|
|
#define ELF_MACHINE_CODE EM_ARM
|
| 15344 |
|
|
#ifdef __QNXTARGET__
|
| 15345 |
|
|
#define ELF_MAXPAGESIZE 0x1000
|
| 15346 |
|
|
#else
|
| 15347 |
|
|
#define ELF_MAXPAGESIZE 0x8000
|
| 15348 |
|
|
#endif
|
| 15349 |
|
|
#define ELF_MINPAGESIZE 0x1000
|
| 15350 |
|
|
#define ELF_COMMONPAGESIZE 0x1000
|
| 15351 |
|
|
|
| 15352 |
|
|
#define bfd_elf32_mkobject elf32_arm_mkobject
|
| 15353 |
|
|
|
| 15354 |
|
|
#define bfd_elf32_bfd_copy_private_bfd_data elf32_arm_copy_private_bfd_data
|
| 15355 |
|
|
#define bfd_elf32_bfd_merge_private_bfd_data elf32_arm_merge_private_bfd_data
|
| 15356 |
|
|
#define bfd_elf32_bfd_set_private_flags elf32_arm_set_private_flags
|
| 15357 |
|
|
#define bfd_elf32_bfd_print_private_bfd_data elf32_arm_print_private_bfd_data
|
| 15358 |
|
|
#define bfd_elf32_bfd_link_hash_table_create elf32_arm_link_hash_table_create
|
| 15359 |
|
|
#define bfd_elf32_bfd_link_hash_table_free elf32_arm_hash_table_free
|
| 15360 |
|
|
#define bfd_elf32_bfd_reloc_type_lookup elf32_arm_reloc_type_lookup
|
| 15361 |
|
|
#define bfd_elf32_bfd_reloc_name_lookup elf32_arm_reloc_name_lookup
|
| 15362 |
|
|
#define bfd_elf32_find_nearest_line elf32_arm_find_nearest_line
|
| 15363 |
|
|
#define bfd_elf32_find_inliner_info elf32_arm_find_inliner_info
|
| 15364 |
|
|
#define bfd_elf32_new_section_hook elf32_arm_new_section_hook
|
| 15365 |
|
|
#define bfd_elf32_bfd_is_target_special_symbol elf32_arm_is_target_special_symbol
|
| 15366 |
|
|
#define bfd_elf32_bfd_final_link elf32_arm_final_link
|
| 15367 |
|
|
|
| 15368 |
|
|
#define elf_backend_get_symbol_type elf32_arm_get_symbol_type
|
| 15369 |
|
|
#define elf_backend_gc_mark_hook elf32_arm_gc_mark_hook
|
| 15370 |
|
|
#define elf_backend_gc_mark_extra_sections elf32_arm_gc_mark_extra_sections
|
| 15371 |
|
|
#define elf_backend_gc_sweep_hook elf32_arm_gc_sweep_hook
|
| 15372 |
|
|
#define elf_backend_check_relocs elf32_arm_check_relocs
|
| 15373 |
|
|
#define elf_backend_relocate_section elf32_arm_relocate_section
|
| 15374 |
|
|
#define elf_backend_write_section elf32_arm_write_section
|
| 15375 |
|
|
#define elf_backend_adjust_dynamic_symbol elf32_arm_adjust_dynamic_symbol
|
| 15376 |
|
|
#define elf_backend_create_dynamic_sections elf32_arm_create_dynamic_sections
|
| 15377 |
|
|
#define elf_backend_finish_dynamic_symbol elf32_arm_finish_dynamic_symbol
|
| 15378 |
|
|
#define elf_backend_finish_dynamic_sections elf32_arm_finish_dynamic_sections
|
| 15379 |
|
|
#define elf_backend_size_dynamic_sections elf32_arm_size_dynamic_sections
|
| 15380 |
|
|
#define elf_backend_always_size_sections elf32_arm_always_size_sections
|
| 15381 |
|
|
#define elf_backend_init_index_section _bfd_elf_init_2_index_sections
|
| 15382 |
|
|
#define elf_backend_post_process_headers elf32_arm_post_process_headers
|
| 15383 |
|
|
#define elf_backend_reloc_type_class elf32_arm_reloc_type_class
|
| 15384 |
|
|
#define elf_backend_object_p elf32_arm_object_p
|
| 15385 |
|
|
#define elf_backend_fake_sections elf32_arm_fake_sections
|
| 15386 |
|
|
#define elf_backend_section_from_shdr elf32_arm_section_from_shdr
|
| 15387 |
|
|
#define elf_backend_final_write_processing elf32_arm_final_write_processing
|
| 15388 |
|
|
#define elf_backend_copy_indirect_symbol elf32_arm_copy_indirect_symbol
|
| 15389 |
|
|
#define elf_backend_size_info elf32_arm_size_info
|
| 15390 |
|
|
#define elf_backend_modify_segment_map elf32_arm_modify_segment_map
|
| 15391 |
|
|
#define elf_backend_additional_program_headers elf32_arm_additional_program_headers
|
| 15392 |
|
|
#define elf_backend_output_arch_local_syms elf32_arm_output_arch_local_syms
|
| 15393 |
|
|
#define elf_backend_begin_write_processing elf32_arm_begin_write_processing
|
| 15394 |
|
|
#define elf_backend_add_symbol_hook elf32_arm_add_symbol_hook
|
| 15395 |
|
|
|
| 15396 |
|
|
#define elf_backend_can_refcount 1
|
| 15397 |
|
|
#define elf_backend_can_gc_sections 1
|
| 15398 |
|
|
#define elf_backend_plt_readonly 1
|
| 15399 |
|
|
#define elf_backend_want_got_plt 1
|
| 15400 |
|
|
#define elf_backend_want_plt_sym 0
|
| 15401 |
|
|
#define elf_backend_may_use_rel_p 1
|
| 15402 |
|
|
#define elf_backend_may_use_rela_p 0
|
| 15403 |
|
|
#define elf_backend_default_use_rela_p 0
|
| 15404 |
|
|
|
| 15405 |
|
|
#define elf_backend_got_header_size 12
|
| 15406 |
|
|
|
| 15407 |
|
|
#undef elf_backend_obj_attrs_vendor
|
| 15408 |
|
|
#define elf_backend_obj_attrs_vendor "aeabi"
|
| 15409 |
|
|
#undef elf_backend_obj_attrs_section
|
| 15410 |
|
|
#define elf_backend_obj_attrs_section ".ARM.attributes"
|
| 15411 |
|
|
#undef elf_backend_obj_attrs_arg_type
|
| 15412 |
|
|
#define elf_backend_obj_attrs_arg_type elf32_arm_obj_attrs_arg_type
|
| 15413 |
|
|
#undef elf_backend_obj_attrs_section_type
|
| 15414 |
|
|
#define elf_backend_obj_attrs_section_type SHT_ARM_ATTRIBUTES
|
| 15415 |
|
|
#define elf_backend_obj_attrs_order elf32_arm_obj_attrs_order
|
| 15416 |
|
|
#define elf_backend_obj_attrs_handle_unknown elf32_arm_obj_attrs_handle_unknown
|
| 15417 |
|
|
|
| 15418 |
|
|
#include "elf32-target.h"
|
| 15419 |
|
|
|
| 15420 |
|
|
/* VxWorks Targets. */
|
| 15421 |
|
|
|
| 15422 |
|
|
#undef TARGET_LITTLE_SYM
|
| 15423 |
|
|
#define TARGET_LITTLE_SYM bfd_elf32_littlearm_vxworks_vec
|
| 15424 |
|
|
#undef TARGET_LITTLE_NAME
|
| 15425 |
|
|
#define TARGET_LITTLE_NAME "elf32-littlearm-vxworks"
|
| 15426 |
|
|
#undef TARGET_BIG_SYM
|
| 15427 |
|
|
#define TARGET_BIG_SYM bfd_elf32_bigarm_vxworks_vec
|
| 15428 |
|
|
#undef TARGET_BIG_NAME
|
| 15429 |
|
|
#define TARGET_BIG_NAME "elf32-bigarm-vxworks"
|
| 15430 |
|
|
|
| 15431 |
|
|
/* Like elf32_arm_link_hash_table_create -- but overrides
|
| 15432 |
|
|
appropriately for VxWorks. */
|
| 15433 |
|
|
|
| 15434 |
|
|
static struct bfd_link_hash_table *
|
| 15435 |
|
|
elf32_arm_vxworks_link_hash_table_create (bfd *abfd)
|
| 15436 |
|
|
{
|
| 15437 |
|
|
struct bfd_link_hash_table *ret;
|
| 15438 |
|
|
|
| 15439 |
|
|
ret = elf32_arm_link_hash_table_create (abfd);
|
| 15440 |
|
|
if (ret)
|
| 15441 |
|
|
{
|
| 15442 |
|
|
struct elf32_arm_link_hash_table *htab
|
| 15443 |
|
|
= (struct elf32_arm_link_hash_table *) ret;
|
| 15444 |
|
|
htab->use_rel = 0;
|
| 15445 |
|
|
htab->vxworks_p = 1;
|
| 15446 |
|
|
}
|
| 15447 |
|
|
return ret;
|
| 15448 |
|
|
}
|
| 15449 |
|
|
|
| 15450 |
|
|
static void
|
| 15451 |
|
|
elf32_arm_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
|
| 15452 |
|
|
{
|
| 15453 |
|
|
elf32_arm_final_write_processing (abfd, linker);
|
| 15454 |
|
|
elf_vxworks_final_write_processing (abfd, linker);
|
| 15455 |
|
|
}
|
| 15456 |
|
|
|
| 15457 |
|
|
#undef elf32_bed
|
| 15458 |
|
|
#define elf32_bed elf32_arm_vxworks_bed
|
| 15459 |
|
|
|
| 15460 |
|
|
#undef bfd_elf32_bfd_link_hash_table_create
|
| 15461 |
|
|
#define bfd_elf32_bfd_link_hash_table_create elf32_arm_vxworks_link_hash_table_create
|
| 15462 |
|
|
#undef elf_backend_final_write_processing
|
| 15463 |
|
|
#define elf_backend_final_write_processing elf32_arm_vxworks_final_write_processing
|
| 15464 |
|
|
#undef elf_backend_emit_relocs
|
| 15465 |
|
|
#define elf_backend_emit_relocs elf_vxworks_emit_relocs
|
| 15466 |
|
|
|
| 15467 |
|
|
#undef elf_backend_may_use_rel_p
|
| 15468 |
|
|
#define elf_backend_may_use_rel_p 0
|
| 15469 |
|
|
#undef elf_backend_may_use_rela_p
|
| 15470 |
|
|
#define elf_backend_may_use_rela_p 1
|
| 15471 |
|
|
#undef elf_backend_default_use_rela_p
|
| 15472 |
|
|
#define elf_backend_default_use_rela_p 1
|
| 15473 |
|
|
#undef elf_backend_want_plt_sym
|
| 15474 |
|
|
#define elf_backend_want_plt_sym 1
|
| 15475 |
|
|
#undef ELF_MAXPAGESIZE
|
| 15476 |
|
|
#define ELF_MAXPAGESIZE 0x1000
|
| 15477 |
|
|
|
| 15478 |
|
|
#include "elf32-target.h"
|
| 15479 |
|
|
|
| 15480 |
|
|
|
| 15481 |
|
|
/* Merge backend specific data from an object file to the output
|
| 15482 |
|
|
object file when linking. */
|
| 15483 |
|
|
|
| 15484 |
|
|
static bfd_boolean
|
| 15485 |
|
|
elf32_arm_merge_private_bfd_data (bfd * ibfd, bfd * obfd)
|
| 15486 |
|
|
{
|
| 15487 |
|
|
flagword out_flags;
|
| 15488 |
|
|
flagword in_flags;
|
| 15489 |
|
|
bfd_boolean flags_compatible = TRUE;
|
| 15490 |
|
|
asection *sec;
|
| 15491 |
|
|
|
| 15492 |
|
|
/* Check if we have the same endianness. */
|
| 15493 |
|
|
if (! _bfd_generic_verify_endian_match (ibfd, obfd))
|
| 15494 |
|
|
return FALSE;
|
| 15495 |
|
|
|
| 15496 |
|
|
if (! is_arm_elf (ibfd) || ! is_arm_elf (obfd))
|
| 15497 |
|
|
return TRUE;
|
| 15498 |
|
|
|
| 15499 |
|
|
if (!elf32_arm_merge_eabi_attributes (ibfd, obfd))
|
| 15500 |
|
|
return FALSE;
|
| 15501 |
|
|
|
| 15502 |
|
|
/* The input BFD must have had its flags initialised. */
|
| 15503 |
|
|
/* The following seems bogus to me -- The flags are initialized in
|
| 15504 |
|
|
the assembler but I don't think an elf_flags_init field is
|
| 15505 |
|
|
written into the object. */
|
| 15506 |
|
|
/* BFD_ASSERT (elf_flags_init (ibfd)); */
|
| 15507 |
|
|
|
| 15508 |
|
|
in_flags = elf_elfheader (ibfd)->e_flags;
|
| 15509 |
|
|
out_flags = elf_elfheader (obfd)->e_flags;
|
| 15510 |
|
|
|
| 15511 |
|
|
/* In theory there is no reason why we couldn't handle this. However
|
| 15512 |
|
|
in practice it isn't even close to working and there is no real
|
| 15513 |
|
|
reason to want it. */
|
| 15514 |
|
|
if (EF_ARM_EABI_VERSION (in_flags) >= EF_ARM_EABI_VER4
|
| 15515 |
|
|
&& !(ibfd->flags & DYNAMIC)
|
| 15516 |
|
|
&& (in_flags & EF_ARM_BE8))
|
| 15517 |
|
|
{
|
| 15518 |
|
|
_bfd_error_handler (_("error: %B is already in final BE8 format"),
|
| 15519 |
|
|
ibfd);
|
| 15520 |
|
|
return FALSE;
|
| 15521 |
|
|
}
|
| 15522 |
|
|
|
| 15523 |
|
|
if (!elf_flags_init (obfd))
|
| 15524 |
|
|
{
|
| 15525 |
|
|
/* If the input is the default architecture and had the default
|
| 15526 |
|
|
flags then do not bother setting the flags for the output
|
| 15527 |
|
|
architecture, instead allow future merges to do this. If no
|
| 15528 |
|
|
future merges ever set these flags then they will retain their
|
| 15529 |
|
|
uninitialised values, which surprise surprise, correspond
|
| 15530 |
|
|
to the default values. */
|
| 15531 |
|
|
if (bfd_get_arch_info (ibfd)->the_default
|
| 15532 |
|
|
&& elf_elfheader (ibfd)->e_flags == 0)
|
| 15533 |
|
|
return TRUE;
|
| 15534 |
|
|
|
| 15535 |
|
|
elf_flags_init (obfd) = TRUE;
|
| 15536 |
|
|
elf_elfheader (obfd)->e_flags = in_flags;
|
| 15537 |
|
|
|
| 15538 |
|
|
if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
|
| 15539 |
|
|
&& bfd_get_arch_info (obfd)->the_default)
|
| 15540 |
|
|
return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), bfd_get_mach (ibfd));
|
| 15541 |
|
|
|
| 15542 |
|
|
return TRUE;
|
| 15543 |
|
|
}
|
| 15544 |
|
|
|
| 15545 |
|
|
/* Determine what should happen if the input ARM architecture
|
| 15546 |
|
|
does not match the output ARM architecture. */
|
| 15547 |
|
|
if (! bfd_arm_merge_machines (ibfd, obfd))
|
| 15548 |
|
|
return FALSE;
|
| 15549 |
|
|
|
| 15550 |
|
|
/* Identical flags must be compatible. */
|
| 15551 |
|
|
if (in_flags == out_flags)
|
| 15552 |
|
|
return TRUE;
|
| 15553 |
|
|
|
| 15554 |
|
|
/* Check to see if the input BFD actually contains any sections. If
|
| 15555 |
|
|
not, its flags may not have been initialised either, but it
|
| 15556 |
|
|
cannot actually cause any incompatiblity. Do not short-circuit
|
| 15557 |
|
|
dynamic objects; their section list may be emptied by
|
| 15558 |
|
|
elf_link_add_object_symbols.
|
| 15559 |
|
|
|
| 15560 |
|
|
Also check to see if there are no code sections in the input.
|
| 15561 |
|
|
In this case there is no need to check for code specific flags.
|
| 15562 |
|
|
XXX - do we need to worry about floating-point format compatability
|
| 15563 |
|
|
in data sections ? */
|
| 15564 |
|
|
if (!(ibfd->flags & DYNAMIC))
|
| 15565 |
|
|
{
|
| 15566 |
|
|
bfd_boolean null_input_bfd = TRUE;
|
| 15567 |
|
|
bfd_boolean only_data_sections = TRUE;
|
| 15568 |
|
|
|
| 15569 |
|
|
for (sec = ibfd->sections; sec != NULL; sec = sec->next)
|
| 15570 |
|
|
{
|
| 15571 |
|
|
/* Ignore synthetic glue sections. */
|
| 15572 |
|
|
if (strcmp (sec->name, ".glue_7")
|
| 15573 |
|
|
&& strcmp (sec->name, ".glue_7t"))
|
| 15574 |
|
|
{
|
| 15575 |
|
|
if ((bfd_get_section_flags (ibfd, sec)
|
| 15576 |
|
|
& (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS))
|
| 15577 |
|
|
== (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS))
|
| 15578 |
|
|
only_data_sections = FALSE;
|
| 15579 |
|
|
|
| 15580 |
|
|
null_input_bfd = FALSE;
|
| 15581 |
|
|
break;
|
| 15582 |
|
|
}
|
| 15583 |
|
|
}
|
| 15584 |
|
|
|
| 15585 |
|
|
if (null_input_bfd || only_data_sections)
|
| 15586 |
|
|
return TRUE;
|
| 15587 |
|
|
}
|
| 15588 |
|
|
|
| 15589 |
|
|
/* Complain about various flag mismatches. */
|
| 15590 |
|
|
if (!elf32_arm_versions_compatible (EF_ARM_EABI_VERSION (in_flags),
|
| 15591 |
|
|
EF_ARM_EABI_VERSION (out_flags)))
|
| 15592 |
|
|
{
|
| 15593 |
|
|
_bfd_error_handler
|
| 15594 |
|
|
(_("error: Source object %B has EABI version %d, but target %B has EABI version %d"),
|
| 15595 |
|
|
ibfd, obfd,
|
| 15596 |
|
|
(in_flags & EF_ARM_EABIMASK) >> 24,
|
| 15597 |
|
|
(out_flags & EF_ARM_EABIMASK) >> 24);
|
| 15598 |
|
|
return FALSE;
|
| 15599 |
|
|
}
|
| 15600 |
|
|
|
| 15601 |
|
|
/* Not sure what needs to be checked for EABI versions >= 1. */
|
| 15602 |
|
|
/* VxWorks libraries do not use these flags. */
|
| 15603 |
|
|
if (get_elf_backend_data (obfd) != &elf32_arm_vxworks_bed
|
| 15604 |
|
|
&& get_elf_backend_data (ibfd) != &elf32_arm_vxworks_bed
|
| 15605 |
|
|
&& EF_ARM_EABI_VERSION (in_flags) == EF_ARM_EABI_UNKNOWN)
|
| 15606 |
|
|
{
|
| 15607 |
|
|
if ((in_flags & EF_ARM_APCS_26) != (out_flags & EF_ARM_APCS_26))
|
| 15608 |
|
|
{
|
| 15609 |
|
|
_bfd_error_handler
|
| 15610 |
|
|
(_("error: %B is compiled for APCS-%d, whereas target %B uses APCS-%d"),
|
| 15611 |
|
|
ibfd, obfd,
|
| 15612 |
|
|
in_flags & EF_ARM_APCS_26 ? 26 : 32,
|
| 15613 |
|
|
out_flags & EF_ARM_APCS_26 ? 26 : 32);
|
| 15614 |
|
|
flags_compatible = FALSE;
|
| 15615 |
|
|
}
|
| 15616 |
|
|
|
| 15617 |
|
|
if ((in_flags & EF_ARM_APCS_FLOAT) != (out_flags & EF_ARM_APCS_FLOAT))
|
| 15618 |
|
|
{
|
| 15619 |
|
|
if (in_flags & EF_ARM_APCS_FLOAT)
|
| 15620 |
|
|
_bfd_error_handler
|
| 15621 |
|
|
(_("error: %B passes floats in float registers, whereas %B passes them in integer registers"),
|
| 15622 |
|
|
ibfd, obfd);
|
| 15623 |
|
|
else
|
| 15624 |
|
|
_bfd_error_handler
|
| 15625 |
|
|
(_("error: %B passes floats in integer registers, whereas %B passes them in float registers"),
|
| 15626 |
|
|
ibfd, obfd);
|
| 15627 |
|
|
|
| 15628 |
|
|
flags_compatible = FALSE;
|
| 15629 |
|
|
}
|
| 15630 |
|
|
|
| 15631 |
|
|
if ((in_flags & EF_ARM_VFP_FLOAT) != (out_flags & EF_ARM_VFP_FLOAT))
|
| 15632 |
|
|
{
|
| 15633 |
|
|
if (in_flags & EF_ARM_VFP_FLOAT)
|
| 15634 |
|
|
_bfd_error_handler
|
| 15635 |
|
|
(_("error: %B uses VFP instructions, whereas %B does not"),
|
| 15636 |
|
|
ibfd, obfd);
|
| 15637 |
|
|
else
|
| 15638 |
|
|
_bfd_error_handler
|
| 15639 |
|
|
(_("error: %B uses FPA instructions, whereas %B does not"),
|
| 15640 |
|
|
ibfd, obfd);
|
| 15641 |
|
|
|
| 15642 |
|
|
flags_compatible = FALSE;
|
| 15643 |
|
|
}
|
| 15644 |
|
|
|
| 15645 |
|
|
if ((in_flags & EF_ARM_MAVERICK_FLOAT) != (out_flags & EF_ARM_MAVERICK_FLOAT))
|
| 15646 |
|
|
{
|
| 15647 |
|
|
if (in_flags & EF_ARM_MAVERICK_FLOAT)
|
| 15648 |
|
|
_bfd_error_handler
|
| 15649 |
|
|
(_("error: %B uses Maverick instructions, whereas %B does not"),
|
| 15650 |
|
|
ibfd, obfd);
|
| 15651 |
|
|
else
|
| 15652 |
|
|
_bfd_error_handler
|
| 15653 |
|
|
(_("error: %B does not use Maverick instructions, whereas %B does"),
|
| 15654 |
|
|
ibfd, obfd);
|
| 15655 |
|
|
|
| 15656 |
|
|
flags_compatible = FALSE;
|
| 15657 |
|
|
}
|
| 15658 |
|
|
|
| 15659 |
|
|
#ifdef EF_ARM_SOFT_FLOAT
|
| 15660 |
|
|
if ((in_flags & EF_ARM_SOFT_FLOAT) != (out_flags & EF_ARM_SOFT_FLOAT))
|
| 15661 |
|
|
{
|
| 15662 |
|
|
/* We can allow interworking between code that is VFP format
|
| 15663 |
|
|
layout, and uses either soft float or integer regs for
|
| 15664 |
|
|
passing floating point arguments and results. We already
|
| 15665 |
|
|
know that the APCS_FLOAT flags match; similarly for VFP
|
| 15666 |
|
|
flags. */
|
| 15667 |
|
|
if ((in_flags & EF_ARM_APCS_FLOAT) != 0
|
| 15668 |
|
|
|| (in_flags & EF_ARM_VFP_FLOAT) == 0)
|
| 15669 |
|
|
{
|
| 15670 |
|
|
if (in_flags & EF_ARM_SOFT_FLOAT)
|
| 15671 |
|
|
_bfd_error_handler
|
| 15672 |
|
|
(_("error: %B uses software FP, whereas %B uses hardware FP"),
|
| 15673 |
|
|
ibfd, obfd);
|
| 15674 |
|
|
else
|
| 15675 |
|
|
_bfd_error_handler
|
| 15676 |
|
|
(_("error: %B uses hardware FP, whereas %B uses software FP"),
|
| 15677 |
|
|
ibfd, obfd);
|
| 15678 |
|
|
|
| 15679 |
|
|
flags_compatible = FALSE;
|
| 15680 |
|
|
}
|
| 15681 |
|
|
}
|
| 15682 |
|
|
#endif
|
| 15683 |
|
|
|
| 15684 |
|
|
/* Interworking mismatch is only a warning. */
|
| 15685 |
|
|
if ((in_flags & EF_ARM_INTERWORK) != (out_flags & EF_ARM_INTERWORK))
|
| 15686 |
|
|
{
|
| 15687 |
|
|
if (in_flags & EF_ARM_INTERWORK)
|
| 15688 |
|
|
{
|
| 15689 |
|
|
_bfd_error_handler
|
| 15690 |
|
|
(_("Warning: %B supports interworking, whereas %B does not"),
|
| 15691 |
|
|
ibfd, obfd);
|
| 15692 |
|
|
}
|
| 15693 |
|
|
else
|
| 15694 |
|
|
{
|
| 15695 |
|
|
_bfd_error_handler
|
| 15696 |
|
|
(_("Warning: %B does not support interworking, whereas %B does"),
|
| 15697 |
|
|
ibfd, obfd);
|
| 15698 |
|
|
}
|
| 15699 |
|
|
}
|
| 15700 |
|
|
}
|
| 15701 |
|
|
|
| 15702 |
|
|
return flags_compatible;
|
| 15703 |
|
|
}
|
| 15704 |
|
|
|
| 15705 |
|
|
|
| 15706 |
|
|
/* Symbian OS Targets. */
|
| 15707 |
|
|
|
| 15708 |
|
|
#undef TARGET_LITTLE_SYM
|
| 15709 |
|
|
#define TARGET_LITTLE_SYM bfd_elf32_littlearm_symbian_vec
|
| 15710 |
|
|
#undef TARGET_LITTLE_NAME
|
| 15711 |
|
|
#define TARGET_LITTLE_NAME "elf32-littlearm-symbian"
|
| 15712 |
|
|
#undef TARGET_BIG_SYM
|
| 15713 |
|
|
#define TARGET_BIG_SYM bfd_elf32_bigarm_symbian_vec
|
| 15714 |
|
|
#undef TARGET_BIG_NAME
|
| 15715 |
|
|
#define TARGET_BIG_NAME "elf32-bigarm-symbian"
|
| 15716 |
|
|
|
| 15717 |
|
|
/* Like elf32_arm_link_hash_table_create -- but overrides
|
| 15718 |
|
|
appropriately for Symbian OS. */
|
| 15719 |
|
|
|
| 15720 |
|
|
static struct bfd_link_hash_table *
|
| 15721 |
|
|
elf32_arm_symbian_link_hash_table_create (bfd *abfd)
|
| 15722 |
|
|
{
|
| 15723 |
|
|
struct bfd_link_hash_table *ret;
|
| 15724 |
|
|
|
| 15725 |
|
|
ret = elf32_arm_link_hash_table_create (abfd);
|
| 15726 |
|
|
if (ret)
|
| 15727 |
|
|
{
|
| 15728 |
|
|
struct elf32_arm_link_hash_table *htab
|
| 15729 |
|
|
= (struct elf32_arm_link_hash_table *)ret;
|
| 15730 |
|
|
/* There is no PLT header for Symbian OS. */
|
| 15731 |
|
|
htab->plt_header_size = 0;
|
| 15732 |
|
|
/* The PLT entries are each one instruction and one word. */
|
| 15733 |
|
|
htab->plt_entry_size = 4 * ARRAY_SIZE (elf32_arm_symbian_plt_entry);
|
| 15734 |
|
|
htab->symbian_p = 1;
|
| 15735 |
|
|
/* Symbian uses armv5t or above, so use_blx is always true. */
|
| 15736 |
|
|
htab->use_blx = 1;
|
| 15737 |
|
|
htab->root.is_relocatable_executable = 1;
|
| 15738 |
|
|
}
|
| 15739 |
|
|
return ret;
|
| 15740 |
|
|
}
|
| 15741 |
|
|
|
| 15742 |
|
|
static const struct bfd_elf_special_section
|
| 15743 |
|
|
elf32_arm_symbian_special_sections[] =
|
| 15744 |
|
|
{
|
| 15745 |
|
|
/* In a BPABI executable, the dynamic linking sections do not go in
|
| 15746 |
|
|
the loadable read-only segment. The post-linker may wish to
|
| 15747 |
|
|
refer to these sections, but they are not part of the final
|
| 15748 |
|
|
program image. */
|
| 15749 |
|
|
{ STRING_COMMA_LEN (".dynamic"), 0, SHT_DYNAMIC, 0 },
|
| 15750 |
|
|
{ STRING_COMMA_LEN (".dynstr"), 0, SHT_STRTAB, 0 },
|
| 15751 |
|
|
{ STRING_COMMA_LEN (".dynsym"), 0, SHT_DYNSYM, 0 },
|
| 15752 |
|
|
{ STRING_COMMA_LEN (".got"), 0, SHT_PROGBITS, 0 },
|
| 15753 |
|
|
{ STRING_COMMA_LEN (".hash"), 0, SHT_HASH, 0 },
|
| 15754 |
|
|
/* These sections do not need to be writable as the SymbianOS
|
| 15755 |
|
|
postlinker will arrange things so that no dynamic relocation is
|
| 15756 |
|
|
required. */
|
| 15757 |
|
|
{ STRING_COMMA_LEN (".init_array"), 0, SHT_INIT_ARRAY, SHF_ALLOC },
|
| 15758 |
|
|
{ STRING_COMMA_LEN (".fini_array"), 0, SHT_FINI_ARRAY, SHF_ALLOC },
|
| 15759 |
|
|
{ STRING_COMMA_LEN (".preinit_array"), 0, SHT_PREINIT_ARRAY, SHF_ALLOC },
|
| 15760 |
|
|
{ NULL, 0, 0, 0, 0 }
|
| 15761 |
|
|
};
|
| 15762 |
|
|
|
| 15763 |
|
|
static void
|
| 15764 |
|
|
elf32_arm_symbian_begin_write_processing (bfd *abfd,
|
| 15765 |
|
|
struct bfd_link_info *link_info)
|
| 15766 |
|
|
{
|
| 15767 |
|
|
/* BPABI objects are never loaded directly by an OS kernel; they are
|
| 15768 |
|
|
processed by a postlinker first, into an OS-specific format. If
|
| 15769 |
|
|
the D_PAGED bit is set on the file, BFD will align segments on
|
| 15770 |
|
|
page boundaries, so that an OS can directly map the file. With
|
| 15771 |
|
|
BPABI objects, that just results in wasted space. In addition,
|
| 15772 |
|
|
because we clear the D_PAGED bit, map_sections_to_segments will
|
| 15773 |
|
|
recognize that the program headers should not be mapped into any
|
| 15774 |
|
|
loadable segment. */
|
| 15775 |
|
|
abfd->flags &= ~D_PAGED;
|
| 15776 |
|
|
elf32_arm_begin_write_processing (abfd, link_info);
|
| 15777 |
|
|
}
|
| 15778 |
|
|
|
| 15779 |
|
|
static bfd_boolean
|
| 15780 |
|
|
elf32_arm_symbian_modify_segment_map (bfd *abfd,
|
| 15781 |
|
|
struct bfd_link_info *info)
|
| 15782 |
|
|
{
|
| 15783 |
|
|
struct elf_segment_map *m;
|
| 15784 |
|
|
asection *dynsec;
|
| 15785 |
|
|
|
| 15786 |
|
|
/* BPABI shared libraries and executables should have a PT_DYNAMIC
|
| 15787 |
|
|
segment. However, because the .dynamic section is not marked
|
| 15788 |
|
|
with SEC_LOAD, the generic ELF code will not create such a
|
| 15789 |
|
|
segment. */
|
| 15790 |
|
|
dynsec = bfd_get_section_by_name (abfd, ".dynamic");
|
| 15791 |
|
|
if (dynsec)
|
| 15792 |
|
|
{
|
| 15793 |
|
|
for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next)
|
| 15794 |
|
|
if (m->p_type == PT_DYNAMIC)
|
| 15795 |
|
|
break;
|
| 15796 |
|
|
|
| 15797 |
|
|
if (m == NULL)
|
| 15798 |
|
|
{
|
| 15799 |
|
|
m = _bfd_elf_make_dynamic_segment (abfd, dynsec);
|
| 15800 |
|
|
m->next = elf_tdata (abfd)->segment_map;
|
| 15801 |
|
|
elf_tdata (abfd)->segment_map = m;
|
| 15802 |
|
|
}
|
| 15803 |
|
|
}
|
| 15804 |
|
|
|
| 15805 |
|
|
/* Also call the generic arm routine. */
|
| 15806 |
|
|
return elf32_arm_modify_segment_map (abfd, info);
|
| 15807 |
|
|
}
|
| 15808 |
|
|
|
| 15809 |
|
|
/* Return address for Ith PLT stub in section PLT, for relocation REL
|
| 15810 |
|
|
or (bfd_vma) -1 if it should not be included. */
|
| 15811 |
|
|
|
| 15812 |
|
|
static bfd_vma
|
| 15813 |
|
|
elf32_arm_symbian_plt_sym_val (bfd_vma i, const asection *plt,
|
| 15814 |
|
|
const arelent *rel ATTRIBUTE_UNUSED)
|
| 15815 |
|
|
{
|
| 15816 |
|
|
return plt->vma + 4 * ARRAY_SIZE (elf32_arm_symbian_plt_entry) * i;
|
| 15817 |
|
|
}
|
| 15818 |
|
|
|
| 15819 |
|
|
|
| 15820 |
|
|
#undef elf32_bed
|
| 15821 |
|
|
#define elf32_bed elf32_arm_symbian_bed
|
| 15822 |
|
|
|
| 15823 |
|
|
/* The dynamic sections are not allocated on SymbianOS; the postlinker
|
| 15824 |
|
|
will process them and then discard them. */
|
| 15825 |
|
|
#undef ELF_DYNAMIC_SEC_FLAGS
|
| 15826 |
|
|
#define ELF_DYNAMIC_SEC_FLAGS \
|
| 15827 |
|
|
(SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED)
|
| 15828 |
|
|
|
| 15829 |
|
|
#undef elf_backend_emit_relocs
|
| 15830 |
|
|
|
| 15831 |
|
|
#undef bfd_elf32_bfd_link_hash_table_create
|
| 15832 |
|
|
#define bfd_elf32_bfd_link_hash_table_create elf32_arm_symbian_link_hash_table_create
|
| 15833 |
|
|
#undef elf_backend_special_sections
|
| 15834 |
|
|
#define elf_backend_special_sections elf32_arm_symbian_special_sections
|
| 15835 |
|
|
#undef elf_backend_begin_write_processing
|
| 15836 |
|
|
#define elf_backend_begin_write_processing elf32_arm_symbian_begin_write_processing
|
| 15837 |
|
|
#undef elf_backend_final_write_processing
|
| 15838 |
|
|
#define elf_backend_final_write_processing elf32_arm_final_write_processing
|
| 15839 |
|
|
|
| 15840 |
|
|
#undef elf_backend_modify_segment_map
|
| 15841 |
|
|
#define elf_backend_modify_segment_map elf32_arm_symbian_modify_segment_map
|
| 15842 |
|
|
|
| 15843 |
|
|
/* There is no .got section for BPABI objects, and hence no header. */
|
| 15844 |
|
|
#undef elf_backend_got_header_size
|
| 15845 |
|
|
#define elf_backend_got_header_size 0
|
| 15846 |
|
|
|
| 15847 |
|
|
/* Similarly, there is no .got.plt section. */
|
| 15848 |
|
|
#undef elf_backend_want_got_plt
|
| 15849 |
|
|
#define elf_backend_want_got_plt 0
|
| 15850 |
|
|
|
| 15851 |
|
|
#undef elf_backend_plt_sym_val
|
| 15852 |
|
|
#define elf_backend_plt_sym_val elf32_arm_symbian_plt_sym_val
|
| 15853 |
|
|
|
| 15854 |
|
|
#undef elf_backend_may_use_rel_p
|
| 15855 |
|
|
#define elf_backend_may_use_rel_p 1
|
| 15856 |
|
|
#undef elf_backend_may_use_rela_p
|
| 15857 |
|
|
#define elf_backend_may_use_rela_p 0
|
| 15858 |
|
|
#undef elf_backend_default_use_rela_p
|
| 15859 |
|
|
#define elf_backend_default_use_rela_p 0
|
| 15860 |
|
|
#undef elf_backend_want_plt_sym
|
| 15861 |
|
|
#define elf_backend_want_plt_sym 0
|
| 15862 |
|
|
#undef ELF_MAXPAGESIZE
|
| 15863 |
|
|
#define ELF_MAXPAGESIZE 0x8000
|
| 15864 |
|
|
|
| 15865 |
|
|
#include "elf32-target.h"
|
