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578 |
markom |
/* 32-bit ELF support for ARM old abi option.
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Copyright 1999, 2000, 2001 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 2 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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#define OLD_ARM_ABI
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#include "elf/arm.h"
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#include "bfd.h"
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#include "sysdep.h"
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#include "libbfd.h"
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#include "elf-bfd.h"
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#ifndef NUM_ELEM
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#define NUM_ELEM(a) (sizeof (a) / sizeof (a)[0])
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#endif
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#define USE_RELA
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#define TARGET_LITTLE_SYM bfd_elf32_littlearm_oabi_vec
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#define TARGET_LITTLE_NAME "elf32-littlearm-oabi"
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#define TARGET_BIG_SYM bfd_elf32_bigarm_oabi_vec
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#define TARGET_BIG_NAME "elf32-bigarm-oabi"
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#define elf_info_to_howto elf32_arm_info_to_howto
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#define elf_info_to_howto_rel 0
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#define ARM_ELF_ABI_VERSION 0
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#define ARM_ELF_OS_ABI_VERSION 0
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static reloc_howto_type elf32_arm_howto_table[] =
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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 */
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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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/* 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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0, /* src_mask */
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0, /* 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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0x000008ff, /* src_mask */
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0x000008ff, /* 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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HOWTO (R_ARM_THM_PC22, /* type */
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1, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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23, /* 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_PC22", /* name */
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false, /* partial_inplace */
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0x07ff07ff, /* src_mask */
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0x07ff07ff, /* dst_mask */
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true), /* pcrel_offset */
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HOWTO (R_ARM_SBREL32, /* 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_SBREL32", /* 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_AMP_VCALL9, /* 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_AMP_VCALL9", /* 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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/* 12 bit pc relative */
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HOWTO (R_ARM_THM_PC11, /* type */
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1, /* rightshift */
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1, /* size (0 = byte, 1 = short, 2 = long) */
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11, /* 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_PC11", /* name */
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false, /* partial_inplace */
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0x000007ff, /* src_mask */
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0x000007ff, /* dst_mask */
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true), /* pcrel_offset */
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/* 12 bit pc relative */
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HOWTO (R_ARM_THM_PC9, /* 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_PC9", /* 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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/* GNU extension to record C++ vtable hierarchy */
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HOWTO (R_ARM_GNU_VTINHERIT, /* type */
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0, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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0, /* bitsize */
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| 242 |
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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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NULL, /* special_function */
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"R_ARM_GNU_VTINHERIT", /* name */
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false, /* partial_inplace */
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0, /* src_mask */
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| 249 |
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0, /* dst_mask */
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| 250 |
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false), /* pcrel_offset */
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/* GNU extension to record C++ vtable member usage */
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HOWTO (R_ARM_GNU_VTENTRY, /* type */
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0, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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| 256 |
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0, /* bitsize */
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| 257 |
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false, /* pc_relative */
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| 258 |
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0, /* bitpos */
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| 259 |
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complain_overflow_dont, /* complain_on_overflow */
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| 260 |
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_bfd_elf_rel_vtable_reloc_fn, /* special_function */
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| 261 |
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"R_ARM_GNU_VTENTRY", /* name */
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| 262 |
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false, /* partial_inplace */
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| 263 |
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0, /* src_mask */
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| 264 |
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0, /* dst_mask */
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| 265 |
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false), /* pcrel_offset */
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| 266 |
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| 267 |
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/* XXX - gap in index numbering here. */
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| 268 |
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| 269 |
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HOWTO (R_ARM_PLT32, /* type */
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| 270 |
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2, /* rightshift */
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| 271 |
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2, /* size (0 = byte, 1 = short, 2 = long) */
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| 272 |
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26, /* bitsize */
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| 273 |
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true, /* pc_relative */
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| 274 |
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0, /* bitpos */
|
| 275 |
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complain_overflow_bitfield,/* complain_on_overflow */
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| 276 |
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bfd_elf_generic_reloc, /* special_function */
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| 277 |
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"R_ARM_PLT32", /* name */
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| 278 |
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true, /* partial_inplace */
|
| 279 |
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0x00ffffff, /* src_mask */
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| 280 |
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0x00ffffff, /* dst_mask */
|
| 281 |
|
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true), /* pcrel_offset */
|
| 282 |
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|
|
| 283 |
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/* XXX - gap in index numbering here. */
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| 284 |
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| 285 |
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HOWTO (R_ARM_RREL32, /* type */
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| 286 |
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0, /* rightshift */
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| 287 |
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0, /* size (0 = byte, 1 = short, 2 = long) */
|
| 288 |
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0, /* bitsize */
|
| 289 |
|
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false, /* pc_relative */
|
| 290 |
|
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0, /* bitpos */
|
| 291 |
|
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complain_overflow_dont, /* complain_on_overflow */
|
| 292 |
|
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bfd_elf_generic_reloc, /* special_function */
|
| 293 |
|
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"R_ARM_RREL32", /* name */
|
| 294 |
|
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false, /* partial_inplace */
|
| 295 |
|
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0, /* src_mask */
|
| 296 |
|
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0, /* dst_mask */
|
| 297 |
|
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false), /* pcrel_offset */
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| 298 |
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| 299 |
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HOWTO (R_ARM_RABS32, /* type */
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| 300 |
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0, /* rightshift */
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| 301 |
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0, /* size (0 = byte, 1 = short, 2 = long) */
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| 302 |
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0, /* bitsize */
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| 303 |
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false, /* pc_relative */
|
| 304 |
|
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0, /* bitpos */
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| 305 |
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complain_overflow_dont, /* complain_on_overflow */
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| 306 |
|
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bfd_elf_generic_reloc, /* special_function */
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| 307 |
|
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"R_ARM_RABS32", /* name */
|
| 308 |
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false, /* partial_inplace */
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| 309 |
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0, /* src_mask */
|
| 310 |
|
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0, /* dst_mask */
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| 311 |
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false), /* pcrel_offset */
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| 312 |
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| 313 |
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HOWTO (R_ARM_RPC24, /* type */
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| 314 |
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0, /* rightshift */
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| 315 |
|
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0, /* size (0 = byte, 1 = short, 2 = long) */
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| 316 |
|
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0, /* bitsize */
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| 317 |
|
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false, /* pc_relative */
|
| 318 |
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0, /* bitpos */
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| 319 |
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complain_overflow_dont, /* complain_on_overflow */
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| 320 |
|
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bfd_elf_generic_reloc, /* special_function */
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| 321 |
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"R_ARM_RPC24", /* name */
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| 322 |
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false, /* partial_inplace */
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| 323 |
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0, /* src_mask */
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| 324 |
|
|
0, /* dst_mask */
|
| 325 |
|
|
false), /* pcrel_offset */
|
| 326 |
|
|
|
| 327 |
|
|
HOWTO (R_ARM_RBASE, /* type */
|
| 328 |
|
|
0, /* rightshift */
|
| 329 |
|
|
0, /* size (0 = byte, 1 = short, 2 = long) */
|
| 330 |
|
|
0, /* bitsize */
|
| 331 |
|
|
false, /* pc_relative */
|
| 332 |
|
|
0, /* bitpos */
|
| 333 |
|
|
complain_overflow_dont, /* complain_on_overflow */
|
| 334 |
|
|
bfd_elf_generic_reloc, /* special_function */
|
| 335 |
|
|
"R_ARM_RBASE", /* name */
|
| 336 |
|
|
false, /* partial_inplace */
|
| 337 |
|
|
0, /* src_mask */
|
| 338 |
|
|
0, /* dst_mask */
|
| 339 |
|
|
false) /* pcrel_offset */
|
| 340 |
|
|
};
|
| 341 |
|
|
|
| 342 |
|
|
/* Locate a reloc in the howto table. This function must be used
|
| 343 |
|
|
when the entry number is is > R_ARM_GNU_VTINHERIT. */
|
| 344 |
|
|
static reloc_howto_type *
|
| 345 |
|
|
find_howto (r_type)
|
| 346 |
|
|
unsigned int r_type;
|
| 347 |
|
|
{
|
| 348 |
|
|
int i;
|
| 349 |
|
|
|
| 350 |
|
|
for (i = NUM_ELEM (elf32_arm_howto_table); i--;)
|
| 351 |
|
|
if (elf32_arm_howto_table [i].type == r_type)
|
| 352 |
|
|
return elf32_arm_howto_table + i;
|
| 353 |
|
|
|
| 354 |
|
|
return NULL;
|
| 355 |
|
|
}
|
| 356 |
|
|
|
| 357 |
|
|
static void
|
| 358 |
|
|
elf32_arm_info_to_howto (abfd, bfd_reloc, elf_reloc)
|
| 359 |
|
|
bfd *abfd ATTRIBUTE_UNUSED;
|
| 360 |
|
|
arelent *bfd_reloc;
|
| 361 |
|
|
Elf32_Internal_Rela *elf_reloc;
|
| 362 |
|
|
{
|
| 363 |
|
|
unsigned int r_type;
|
| 364 |
|
|
|
| 365 |
|
|
r_type = ELF32_R_TYPE (elf_reloc->r_info);
|
| 366 |
|
|
|
| 367 |
|
|
if (r_type <= R_ARM_GNU_VTINHERIT)
|
| 368 |
|
|
bfd_reloc->howto = & elf32_arm_howto_table[r_type];
|
| 369 |
|
|
else
|
| 370 |
|
|
bfd_reloc->howto = find_howto (r_type);
|
| 371 |
|
|
}
|
| 372 |
|
|
|
| 373 |
|
|
struct elf32_arm_reloc_map
|
| 374 |
|
|
{
|
| 375 |
|
|
bfd_reloc_code_real_type bfd_reloc_val;
|
| 376 |
|
|
unsigned char elf_reloc_val;
|
| 377 |
|
|
};
|
| 378 |
|
|
|
| 379 |
|
|
static const struct elf32_arm_reloc_map elf32_arm_reloc_map[] =
|
| 380 |
|
|
{
|
| 381 |
|
|
{BFD_RELOC_NONE, R_ARM_NONE },
|
| 382 |
|
|
{BFD_RELOC_ARM_PCREL_BRANCH, R_ARM_PC24 },
|
| 383 |
|
|
{BFD_RELOC_32, R_ARM_ABS32 },
|
| 384 |
|
|
{BFD_RELOC_32_PCREL, R_ARM_REL32 },
|
| 385 |
|
|
{BFD_RELOC_8, R_ARM_ABS8 },
|
| 386 |
|
|
{BFD_RELOC_16, R_ARM_ABS16 },
|
| 387 |
|
|
{BFD_RELOC_ARM_OFFSET_IMM, R_ARM_ABS12 },
|
| 388 |
|
|
{BFD_RELOC_ARM_THUMB_OFFSET, R_ARM_THM_ABS5 },
|
| 389 |
|
|
{BFD_RELOC_THUMB_PCREL_BRANCH23, R_ARM_THM_PC22 },
|
| 390 |
|
|
{BFD_RELOC_NONE, R_ARM_SBREL32 },
|
| 391 |
|
|
{BFD_RELOC_NONE, R_ARM_AMP_VCALL9 },
|
| 392 |
|
|
{BFD_RELOC_THUMB_PCREL_BRANCH12, R_ARM_THM_PC11 },
|
| 393 |
|
|
{BFD_RELOC_THUMB_PCREL_BRANCH9, R_ARM_THM_PC9 },
|
| 394 |
|
|
{BFD_RELOC_VTABLE_INHERIT, R_ARM_GNU_VTINHERIT },
|
| 395 |
|
|
{BFD_RELOC_VTABLE_ENTRY, R_ARM_GNU_VTENTRY }
|
| 396 |
|
|
};
|
| 397 |
|
|
|
| 398 |
|
|
static reloc_howto_type *
|
| 399 |
|
|
elf32_arm_reloc_type_lookup (abfd, code)
|
| 400 |
|
|
bfd * abfd ATTRIBUTE_UNUSED;
|
| 401 |
|
|
bfd_reloc_code_real_type code;
|
| 402 |
|
|
{
|
| 403 |
|
|
unsigned int i;
|
| 404 |
|
|
|
| 405 |
|
|
for (i = NUM_ELEM (elf32_arm_reloc_map); i--;)
|
| 406 |
|
|
if (elf32_arm_reloc_map[i].bfd_reloc_val == code)
|
| 407 |
|
|
return & elf32_arm_howto_table [elf32_arm_reloc_map[i].elf_reloc_val];
|
| 408 |
|
|
|
| 409 |
|
|
if (code == BFD_RELOC_ARM_PLT32)
|
| 410 |
|
|
return find_howto (R_ARM_PLT32);
|
| 411 |
|
|
|
| 412 |
|
|
return NULL;
|
| 413 |
|
|
}
|
| 414 |
|
|
|
| 415 |
|
|
#define bfd_elf32_arm_allocate_interworking_sections \
|
| 416 |
|
|
bfd_elf32_arm_oabi_allocate_interworking_sections
|
| 417 |
|
|
#define bfd_elf32_arm_get_bfd_for_interworking \
|
| 418 |
|
|
bfd_elf32_arm_oabi_get_bfd_for_interworking
|
| 419 |
|
|
#define bfd_elf32_arm_process_before_allocation \
|
| 420 |
|
|
bfd_elf32_arm_oabi_process_before_allocation
|
| 421 |
|
|
|
| 422 |
|
|
#include "elf32-arm.h"
|
