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jeremybenn |
/* FR30-specific support for 32-bit ELF.
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Copyright 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
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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 "bfd.h"
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#include "libbfd.h"
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#include "elf-bfd.h"
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#include "elf/fr30.h"
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/* Forward declarations. */
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static bfd_reloc_status_type fr30_elf_i20_reloc
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PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
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static bfd_reloc_status_type fr30_elf_i32_reloc
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PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
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static reloc_howto_type * fr30_reloc_type_lookup
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PARAMS ((bfd *abfd, bfd_reloc_code_real_type code));
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static void fr30_info_to_howto_rela
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PARAMS ((bfd *, arelent *, Elf_Internal_Rela *));
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static bfd_boolean fr30_elf_relocate_section
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PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
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Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
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static bfd_reloc_status_type fr30_final_link_relocate
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PARAMS ((reloc_howto_type *, bfd *, asection *, bfd_byte *,
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Elf_Internal_Rela *, bfd_vma));
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static bfd_boolean fr30_elf_check_relocs
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PARAMS ((bfd *, struct bfd_link_info *, asection *,
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const Elf_Internal_Rela *));
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static reloc_howto_type fr30_elf_howto_table [] =
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{
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/* This reloc does nothing. */
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HOWTO (R_FR30_NONE, /* 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_FR30_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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/* An 8 bit absolute relocation. */
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HOWTO (R_FR30_8, /* type */
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0, /* rightshift */
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1, /* size (0 = byte, 1 = short, 2 = long) */
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8, /* bitsize */
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FALSE, /* pc_relative */
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4, /* 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_FR30_8", /* name */
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FALSE, /* partial_inplace */
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0x0000, /* src_mask */
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0x0ff0, /* dst_mask */
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FALSE), /* pcrel_offset */
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/* A 20 bit absolute relocation. */
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HOWTO (R_FR30_20, /* type */
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0, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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20, /* 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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fr30_elf_i20_reloc, /* special_function */
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"R_FR30_20", /* name */
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FALSE, /* partial_inplace */
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0x00000000, /* src_mask */
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0x00f0ffff, /* dst_mask */
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FALSE), /* pcrel_offset */
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/* A 32 bit absolute relocation. */
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HOWTO (R_FR30_32, /* 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_FR30_32", /* name */
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FALSE, /* partial_inplace */
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0x00000000, /* src_mask */
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0xffffffff, /* dst_mask */
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FALSE), /* pcrel_offset */
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/* A 32 bit into 48 bits absolute relocation. */
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HOWTO (R_FR30_48, /* 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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fr30_elf_i32_reloc, /* special_function */
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"R_FR30_48", /* name */
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FALSE, /* partial_inplace */
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0x00000000, /* src_mask */
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0xffffffff, /* dst_mask */
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FALSE), /* pcrel_offset */
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/* A 6 bit absolute relocation. */
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HOWTO (R_FR30_6_IN_4, /* type */
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2, /* rightshift */
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1, /* size (0 = byte, 1 = short, 2 = long) */
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6, /* bitsize */
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FALSE, /* pc_relative */
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4, /* bitpos */
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complain_overflow_unsigned, /* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_FR30_6_IN_4", /* name */
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FALSE, /* partial_inplace */
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0x0000, /* src_mask */
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0x00f0, /* dst_mask */
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FALSE), /* pcrel_offset */
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/* An 8 bit absolute relocation. */
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HOWTO (R_FR30_8_IN_8, /* type */
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0, /* rightshift */
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1, /* size (0 = byte, 1 = short, 2 = long) */
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8, /* bitsize */
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FALSE, /* pc_relative */
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4, /* 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_FR30_8_IN_8", /* name */
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FALSE, /* partial_inplace */
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0x0000, /* src_mask */
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0x0ff0, /* dst_mask */
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FALSE), /* pcrel_offset */
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/* A 9 bit absolute relocation. */
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HOWTO (R_FR30_9_IN_8, /* type */
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1, /* rightshift */
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1, /* size (0 = byte, 1 = short, 2 = long) */
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9, /* bitsize */
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FALSE, /* pc_relative */
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4, /* 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_FR30_9_IN_8", /* name */
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FALSE, /* partial_inplace */
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0x0000, /* src_mask */
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0x0ff0, /* dst_mask */
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FALSE), /* pcrel_offset */
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/* A 10 bit absolute relocation. */
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HOWTO (R_FR30_10_IN_8, /* type */
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2, /* rightshift */
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1, /* size (0 = byte, 1 = short, 2 = long) */
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10, /* bitsize */
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FALSE, /* pc_relative */
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4, /* 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_FR30_10_IN_8", /* name */
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FALSE, /* partial_inplace */
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0x0000, /* src_mask */
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0x0ff0, /* dst_mask */
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FALSE), /* pcrel_offset */
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/* A PC relative 9 bit relocation, right shifted by 1. */
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HOWTO (R_FR30_9_PCREL, /* type */
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1, /* rightshift */
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1, /* size (0 = byte, 1 = short, 2 = long) */
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9, /* 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_FR30_9_PCREL", /* name */
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FALSE, /* partial_inplace */
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0x0000, /* src_mask */
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0x00ff, /* dst_mask */
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FALSE), /* pcrel_offset */
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/* A PC relative 12 bit relocation, right shifted by 1. */
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HOWTO (R_FR30_12_PCREL, /* type */
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1, /* rightshift */
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1, /* size (0 = byte, 1 = short, 2 = long) */
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12, /* 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_FR30_12_PCREL", /* name */
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FALSE, /* partial_inplace */
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0x0000, /* src_mask */
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0x07ff, /* dst_mask */
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FALSE), /* pcrel_offset */
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/* GNU extension to record C++ vtable hierarchy */
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HOWTO (R_FR30_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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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_FR30_GNU_VTINHERIT", /* 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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/* GNU extension to record C++ vtable member usage */
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HOWTO (R_FR30_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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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_rel_vtable_reloc_fn, /* special_function */
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"R_FR30_GNU_VTENTRY", /* 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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};
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/* Utility to actually perform an R_FR30_20 reloc. */
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static bfd_reloc_status_type
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fr30_elf_i20_reloc (abfd, reloc_entry, symbol, data,
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input_section, output_bfd, error_message)
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bfd *abfd;
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arelent *reloc_entry;
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asymbol *symbol;
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PTR data;
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asection *input_section;
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bfd *output_bfd;
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char **error_message ATTRIBUTE_UNUSED;
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{
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bfd_vma relocation;
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unsigned long x;
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259 |
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/* This part is from bfd_elf_generic_reloc. */
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if (output_bfd != (bfd *) NULL
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&& (symbol->flags & BSF_SECTION_SYM) == 0
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&& (! reloc_entry->howto->partial_inplace
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|| reloc_entry->addend == 0))
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{
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reloc_entry->address += input_section->output_offset;
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return bfd_reloc_ok;
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}
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269 |
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270 |
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if (output_bfd != NULL)
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/* FIXME: See bfd_perform_relocation. Is this right? */
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272 |
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return bfd_reloc_ok;
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273 |
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274 |
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relocation =
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275 |
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symbol->value
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276 |
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+ symbol->section->output_section->vma
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+ symbol->section->output_offset
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278 |
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+ reloc_entry->addend;
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279 |
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280 |
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if (relocation > (((bfd_vma) 1 << 20) - 1))
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281 |
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return bfd_reloc_overflow;
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282 |
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283 |
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x = bfd_get_32 (abfd, (char *) data + reloc_entry->address);
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284 |
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x = (x & 0xff0f0000) | (relocation & 0x0000ffff) | ((relocation & 0x000f0000) << 4);
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285 |
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bfd_put_32 (abfd, (bfd_vma) x, (char *) data + reloc_entry->address);
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286 |
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|
287 |
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return bfd_reloc_ok;
|
288 |
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}
|
289 |
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|
290 |
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/* Utility to actually perform a R_FR30_48 reloc. */
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291 |
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|
292 |
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static bfd_reloc_status_type
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293 |
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fr30_elf_i32_reloc (abfd, reloc_entry, symbol, data,
|
294 |
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input_section, output_bfd, error_message)
|
295 |
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bfd *abfd;
|
296 |
|
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arelent *reloc_entry;
|
297 |
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asymbol *symbol;
|
298 |
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PTR data;
|
299 |
|
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asection *input_section;
|
300 |
|
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bfd *output_bfd;
|
301 |
|
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char **error_message ATTRIBUTE_UNUSED;
|
302 |
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{
|
303 |
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bfd_vma relocation;
|
304 |
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|
305 |
|
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/* This part is from bfd_elf_generic_reloc. */
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306 |
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if (output_bfd != (bfd *) NULL
|
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|
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&& (symbol->flags & BSF_SECTION_SYM) == 0
|
308 |
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&& (! reloc_entry->howto->partial_inplace
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309 |
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|| reloc_entry->addend == 0))
|
310 |
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{
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311 |
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reloc_entry->address += input_section->output_offset;
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312 |
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return bfd_reloc_ok;
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313 |
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}
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314 |
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|
315 |
|
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if (output_bfd != NULL)
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316 |
|
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/* FIXME: See bfd_perform_relocation. Is this right? */
|
317 |
|
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return bfd_reloc_ok;
|
318 |
|
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|
319 |
|
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relocation =
|
320 |
|
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symbol->value
|
321 |
|
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+ symbol->section->output_section->vma
|
322 |
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+ symbol->section->output_offset
|
323 |
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+ reloc_entry->addend;
|
324 |
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|
325 |
|
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bfd_put_32 (abfd, relocation, (char *) data + reloc_entry->address + 2);
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326 |
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|
327 |
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return bfd_reloc_ok;
|
328 |
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}
|
329 |
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|
330 |
|
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/* Map BFD reloc types to FR30 ELF reloc types. */
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331 |
|
|
|
332 |
|
|
struct fr30_reloc_map
|
333 |
|
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{
|
334 |
|
|
bfd_reloc_code_real_type bfd_reloc_val;
|
335 |
|
|
unsigned int fr30_reloc_val;
|
336 |
|
|
};
|
337 |
|
|
|
338 |
|
|
static const struct fr30_reloc_map fr30_reloc_map [] =
|
339 |
|
|
{
|
340 |
|
|
{ BFD_RELOC_NONE, R_FR30_NONE },
|
341 |
|
|
{ BFD_RELOC_8, R_FR30_8 },
|
342 |
|
|
{ BFD_RELOC_FR30_20, R_FR30_20 },
|
343 |
|
|
{ BFD_RELOC_32, R_FR30_32 },
|
344 |
|
|
{ BFD_RELOC_FR30_48, R_FR30_48 },
|
345 |
|
|
{ BFD_RELOC_FR30_6_IN_4, R_FR30_6_IN_4 },
|
346 |
|
|
{ BFD_RELOC_FR30_8_IN_8, R_FR30_8_IN_8 },
|
347 |
|
|
{ BFD_RELOC_FR30_9_IN_8, R_FR30_9_IN_8 },
|
348 |
|
|
{ BFD_RELOC_FR30_10_IN_8, R_FR30_10_IN_8 },
|
349 |
|
|
{ BFD_RELOC_FR30_9_PCREL, R_FR30_9_PCREL },
|
350 |
|
|
{ BFD_RELOC_FR30_12_PCREL, R_FR30_12_PCREL },
|
351 |
|
|
{ BFD_RELOC_VTABLE_INHERIT, R_FR30_GNU_VTINHERIT },
|
352 |
|
|
{ BFD_RELOC_VTABLE_ENTRY, R_FR30_GNU_VTENTRY },
|
353 |
|
|
};
|
354 |
|
|
|
355 |
|
|
static reloc_howto_type *
|
356 |
|
|
fr30_reloc_type_lookup (abfd, code)
|
357 |
|
|
bfd *abfd ATTRIBUTE_UNUSED;
|
358 |
|
|
bfd_reloc_code_real_type code;
|
359 |
|
|
{
|
360 |
|
|
unsigned int i;
|
361 |
|
|
|
362 |
|
|
for (i = sizeof (fr30_reloc_map) / sizeof (fr30_reloc_map[0]);
|
363 |
|
|
--i;)
|
364 |
|
|
if (fr30_reloc_map [i].bfd_reloc_val == code)
|
365 |
|
|
return & fr30_elf_howto_table [fr30_reloc_map[i].fr30_reloc_val];
|
366 |
|
|
|
367 |
|
|
return NULL;
|
368 |
|
|
}
|
369 |
|
|
|
370 |
|
|
static reloc_howto_type *
|
371 |
|
|
fr30_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, const char *r_name)
|
372 |
|
|
{
|
373 |
|
|
unsigned int i;
|
374 |
|
|
|
375 |
|
|
for (i = 0;
|
376 |
|
|
i < sizeof (fr30_elf_howto_table) / sizeof (fr30_elf_howto_table[0]);
|
377 |
|
|
i++)
|
378 |
|
|
if (fr30_elf_howto_table[i].name != NULL
|
379 |
|
|
&& strcasecmp (fr30_elf_howto_table[i].name, r_name) == 0)
|
380 |
|
|
return &fr30_elf_howto_table[i];
|
381 |
|
|
|
382 |
|
|
return NULL;
|
383 |
|
|
}
|
384 |
|
|
|
385 |
|
|
/* Set the howto pointer for an FR30 ELF reloc. */
|
386 |
|
|
|
387 |
|
|
static void
|
388 |
|
|
fr30_info_to_howto_rela (abfd, cache_ptr, dst)
|
389 |
|
|
bfd *abfd ATTRIBUTE_UNUSED;
|
390 |
|
|
arelent *cache_ptr;
|
391 |
|
|
Elf_Internal_Rela *dst;
|
392 |
|
|
{
|
393 |
|
|
unsigned int r_type;
|
394 |
|
|
|
395 |
|
|
r_type = ELF32_R_TYPE (dst->r_info);
|
396 |
|
|
BFD_ASSERT (r_type < (unsigned int) R_FR30_max);
|
397 |
|
|
cache_ptr->howto = & fr30_elf_howto_table [r_type];
|
398 |
|
|
}
|
399 |
|
|
|
400 |
|
|
/* Perform a single relocation. By default we use the standard BFD
|
401 |
|
|
routines, but a few relocs, we have to do them ourselves. */
|
402 |
|
|
|
403 |
|
|
static bfd_reloc_status_type
|
404 |
|
|
fr30_final_link_relocate (howto, input_bfd, input_section, contents, rel,
|
405 |
|
|
relocation)
|
406 |
|
|
reloc_howto_type *howto;
|
407 |
|
|
bfd *input_bfd;
|
408 |
|
|
asection *input_section;
|
409 |
|
|
bfd_byte *contents;
|
410 |
|
|
Elf_Internal_Rela *rel;
|
411 |
|
|
bfd_vma relocation;
|
412 |
|
|
{
|
413 |
|
|
bfd_reloc_status_type r = bfd_reloc_ok;
|
414 |
|
|
bfd_vma x;
|
415 |
|
|
bfd_signed_vma srel;
|
416 |
|
|
|
417 |
|
|
switch (howto->type)
|
418 |
|
|
{
|
419 |
|
|
case R_FR30_20:
|
420 |
|
|
contents += rel->r_offset;
|
421 |
|
|
relocation += rel->r_addend;
|
422 |
|
|
|
423 |
|
|
if (relocation > ((1 << 20) - 1))
|
424 |
|
|
return bfd_reloc_overflow;
|
425 |
|
|
|
426 |
|
|
x = bfd_get_32 (input_bfd, contents);
|
427 |
|
|
x = (x & 0xff0f0000) | (relocation & 0x0000ffff) | ((relocation & 0x000f0000) << 4);
|
428 |
|
|
bfd_put_32 (input_bfd, x, contents);
|
429 |
|
|
break;
|
430 |
|
|
|
431 |
|
|
case R_FR30_48:
|
432 |
|
|
contents += rel->r_offset + 2;
|
433 |
|
|
relocation += rel->r_addend;
|
434 |
|
|
bfd_put_32 (input_bfd, relocation, contents);
|
435 |
|
|
break;
|
436 |
|
|
|
437 |
|
|
case R_FR30_9_PCREL:
|
438 |
|
|
contents += rel->r_offset + 1;
|
439 |
|
|
srel = (bfd_signed_vma) relocation;
|
440 |
|
|
srel += rel->r_addend;
|
441 |
|
|
srel -= rel->r_offset;
|
442 |
|
|
srel -= 2; /* Branch instructions add 2 to the PC... */
|
443 |
|
|
srel -= (input_section->output_section->vma +
|
444 |
|
|
input_section->output_offset);
|
445 |
|
|
|
446 |
|
|
if (srel & 1)
|
447 |
|
|
return bfd_reloc_outofrange;
|
448 |
|
|
if (srel > ((1 << 8) - 1) || (srel < - (1 << 8)))
|
449 |
|
|
return bfd_reloc_overflow;
|
450 |
|
|
|
451 |
|
|
bfd_put_8 (input_bfd, srel >> 1, contents);
|
452 |
|
|
break;
|
453 |
|
|
|
454 |
|
|
case R_FR30_12_PCREL:
|
455 |
|
|
contents += rel->r_offset;
|
456 |
|
|
srel = (bfd_signed_vma) relocation;
|
457 |
|
|
srel += rel->r_addend;
|
458 |
|
|
srel -= rel->r_offset;
|
459 |
|
|
srel -= 2; /* Branch instructions add 2 to the PC... */
|
460 |
|
|
srel -= (input_section->output_section->vma +
|
461 |
|
|
input_section->output_offset);
|
462 |
|
|
|
463 |
|
|
if (srel & 1)
|
464 |
|
|
return bfd_reloc_outofrange;
|
465 |
|
|
if (srel > ((1 << 11) - 1) || (srel < - (1 << 11)))
|
466 |
|
|
return bfd_reloc_overflow;
|
467 |
|
|
|
468 |
|
|
x = bfd_get_16 (input_bfd, contents);
|
469 |
|
|
x = (x & 0xf800) | ((srel >> 1) & 0x7ff);
|
470 |
|
|
bfd_put_16 (input_bfd, x, contents);
|
471 |
|
|
break;
|
472 |
|
|
|
473 |
|
|
default:
|
474 |
|
|
r = _bfd_final_link_relocate (howto, input_bfd, input_section,
|
475 |
|
|
contents, rel->r_offset,
|
476 |
|
|
relocation, rel->r_addend);
|
477 |
|
|
}
|
478 |
|
|
|
479 |
|
|
return r;
|
480 |
|
|
}
|
481 |
|
|
|
482 |
|
|
/* Relocate an FR30 ELF section.
|
483 |
|
|
|
484 |
|
|
The RELOCATE_SECTION function is called by the new ELF backend linker
|
485 |
|
|
to handle the relocations for a section.
|
486 |
|
|
|
487 |
|
|
The relocs are always passed as Rela structures; if the section
|
488 |
|
|
actually uses Rel structures, the r_addend field will always be
|
489 |
|
|
zero.
|
490 |
|
|
|
491 |
|
|
This function is responsible for adjusting the section contents as
|
492 |
|
|
necessary, and (if using Rela relocs and generating a relocatable
|
493 |
|
|
output file) adjusting the reloc addend as necessary.
|
494 |
|
|
|
495 |
|
|
This function does not have to worry about setting the reloc
|
496 |
|
|
address or the reloc symbol index.
|
497 |
|
|
|
498 |
|
|
LOCAL_SYMS is a pointer to the swapped in local symbols.
|
499 |
|
|
|
500 |
|
|
LOCAL_SECTIONS is an array giving the section in the input file
|
501 |
|
|
corresponding to the st_shndx field of each local symbol.
|
502 |
|
|
|
503 |
|
|
The global hash table entry for the global symbols can be found
|
504 |
|
|
via elf_sym_hashes (input_bfd).
|
505 |
|
|
|
506 |
|
|
When generating relocatable output, this function must handle
|
507 |
|
|
STB_LOCAL/STT_SECTION symbols specially. The output symbol is
|
508 |
|
|
going to be the section symbol corresponding to the output
|
509 |
|
|
section, which means that the addend must be adjusted
|
510 |
|
|
accordingly. */
|
511 |
|
|
|
512 |
|
|
static bfd_boolean
|
513 |
|
|
fr30_elf_relocate_section (output_bfd, info, input_bfd, input_section,
|
514 |
|
|
contents, relocs, local_syms, local_sections)
|
515 |
|
|
bfd *output_bfd;
|
516 |
|
|
struct bfd_link_info *info;
|
517 |
|
|
bfd *input_bfd;
|
518 |
|
|
asection *input_section;
|
519 |
|
|
bfd_byte *contents;
|
520 |
|
|
Elf_Internal_Rela *relocs;
|
521 |
|
|
Elf_Internal_Sym *local_syms;
|
522 |
|
|
asection **local_sections;
|
523 |
|
|
{
|
524 |
|
|
Elf_Internal_Shdr *symtab_hdr;
|
525 |
|
|
struct elf_link_hash_entry **sym_hashes;
|
526 |
|
|
Elf_Internal_Rela *rel;
|
527 |
|
|
Elf_Internal_Rela *relend;
|
528 |
|
|
|
529 |
|
|
symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr;
|
530 |
|
|
sym_hashes = elf_sym_hashes (input_bfd);
|
531 |
|
|
relend = relocs + input_section->reloc_count;
|
532 |
|
|
|
533 |
|
|
for (rel = relocs; rel < relend; rel ++)
|
534 |
|
|
{
|
535 |
|
|
reloc_howto_type *howto;
|
536 |
|
|
unsigned long r_symndx;
|
537 |
|
|
Elf_Internal_Sym *sym;
|
538 |
|
|
asection *sec;
|
539 |
|
|
struct elf_link_hash_entry *h;
|
540 |
|
|
bfd_vma relocation;
|
541 |
|
|
bfd_reloc_status_type r;
|
542 |
|
|
const char *name;
|
543 |
|
|
int r_type;
|
544 |
|
|
|
545 |
|
|
r_type = ELF32_R_TYPE (rel->r_info);
|
546 |
|
|
|
547 |
|
|
if ( r_type == R_FR30_GNU_VTINHERIT
|
548 |
|
|
|| r_type == R_FR30_GNU_VTENTRY)
|
549 |
|
|
continue;
|
550 |
|
|
|
551 |
|
|
r_symndx = ELF32_R_SYM (rel->r_info);
|
552 |
|
|
|
553 |
|
|
howto = fr30_elf_howto_table + ELF32_R_TYPE (rel->r_info);
|
554 |
|
|
h = NULL;
|
555 |
|
|
sym = NULL;
|
556 |
|
|
sec = NULL;
|
557 |
|
|
|
558 |
|
|
if (r_symndx < symtab_hdr->sh_info)
|
559 |
|
|
{
|
560 |
|
|
sym = local_syms + r_symndx;
|
561 |
|
|
sec = local_sections [r_symndx];
|
562 |
|
|
relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
|
563 |
|
|
|
564 |
|
|
name = bfd_elf_string_from_elf_section
|
565 |
|
|
(input_bfd, symtab_hdr->sh_link, sym->st_name);
|
566 |
|
|
name = (name == NULL) ? bfd_section_name (input_bfd, sec) : name;
|
567 |
|
|
}
|
568 |
|
|
else
|
569 |
|
|
{
|
570 |
|
|
bfd_boolean unresolved_reloc, warned;
|
571 |
|
|
|
572 |
|
|
RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
|
573 |
|
|
r_symndx, symtab_hdr, sym_hashes,
|
574 |
|
|
h, sec, relocation,
|
575 |
|
|
unresolved_reloc, warned);
|
576 |
|
|
|
577 |
|
|
name = h->root.root.string;
|
578 |
|
|
}
|
579 |
|
|
|
580 |
|
|
if (sec != NULL && elf_discarded_section (sec))
|
581 |
|
|
{
|
582 |
|
|
/* For relocs against symbols from removed linkonce sections,
|
583 |
|
|
or sections discarded by a linker script, we just want the
|
584 |
|
|
section contents zeroed. Avoid any special processing. */
|
585 |
|
|
_bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
|
586 |
|
|
rel->r_info = 0;
|
587 |
|
|
rel->r_addend = 0;
|
588 |
|
|
continue;
|
589 |
|
|
}
|
590 |
|
|
|
591 |
|
|
if (info->relocatable)
|
592 |
|
|
continue;
|
593 |
|
|
|
594 |
|
|
r = fr30_final_link_relocate (howto, input_bfd, input_section,
|
595 |
|
|
contents, rel, relocation);
|
596 |
|
|
|
597 |
|
|
if (r != bfd_reloc_ok)
|
598 |
|
|
{
|
599 |
|
|
const char * msg = (const char *) NULL;
|
600 |
|
|
|
601 |
|
|
switch (r)
|
602 |
|
|
{
|
603 |
|
|
case bfd_reloc_overflow:
|
604 |
|
|
r = info->callbacks->reloc_overflow
|
605 |
|
|
(info, (h ? &h->root : NULL), name, howto->name,
|
606 |
|
|
(bfd_vma) 0, input_bfd, input_section, rel->r_offset);
|
607 |
|
|
break;
|
608 |
|
|
|
609 |
|
|
case bfd_reloc_undefined:
|
610 |
|
|
r = info->callbacks->undefined_symbol
|
611 |
|
|
(info, name, input_bfd, input_section, rel->r_offset,
|
612 |
|
|
TRUE);
|
613 |
|
|
break;
|
614 |
|
|
|
615 |
|
|
case bfd_reloc_outofrange:
|
616 |
|
|
msg = _("internal error: out of range error");
|
617 |
|
|
break;
|
618 |
|
|
|
619 |
|
|
case bfd_reloc_notsupported:
|
620 |
|
|
msg = _("internal error: unsupported relocation error");
|
621 |
|
|
break;
|
622 |
|
|
|
623 |
|
|
case bfd_reloc_dangerous:
|
624 |
|
|
msg = _("internal error: dangerous relocation");
|
625 |
|
|
break;
|
626 |
|
|
|
627 |
|
|
default:
|
628 |
|
|
msg = _("internal error: unknown error");
|
629 |
|
|
break;
|
630 |
|
|
}
|
631 |
|
|
|
632 |
|
|
if (msg)
|
633 |
|
|
r = info->callbacks->warning
|
634 |
|
|
(info, msg, name, input_bfd, input_section, rel->r_offset);
|
635 |
|
|
|
636 |
|
|
if (! r)
|
637 |
|
|
return FALSE;
|
638 |
|
|
}
|
639 |
|
|
}
|
640 |
|
|
|
641 |
|
|
return TRUE;
|
642 |
|
|
}
|
643 |
|
|
|
644 |
|
|
/* Return the section that should be marked against GC for a given
|
645 |
|
|
relocation. */
|
646 |
|
|
|
647 |
|
|
static asection *
|
648 |
|
|
fr30_elf_gc_mark_hook (asection *sec,
|
649 |
|
|
struct bfd_link_info *info,
|
650 |
|
|
Elf_Internal_Rela *rel,
|
651 |
|
|
struct elf_link_hash_entry *h,
|
652 |
|
|
Elf_Internal_Sym *sym)
|
653 |
|
|
{
|
654 |
|
|
if (h != NULL)
|
655 |
|
|
switch (ELF32_R_TYPE (rel->r_info))
|
656 |
|
|
{
|
657 |
|
|
case R_FR30_GNU_VTINHERIT:
|
658 |
|
|
case R_FR30_GNU_VTENTRY:
|
659 |
|
|
return NULL;
|
660 |
|
|
}
|
661 |
|
|
|
662 |
|
|
return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
|
663 |
|
|
}
|
664 |
|
|
|
665 |
|
|
/* Look through the relocs for a section during the first phase.
|
666 |
|
|
Since we don't do .gots or .plts, we just need to consider the
|
667 |
|
|
virtual table relocs for gc. */
|
668 |
|
|
|
669 |
|
|
static bfd_boolean
|
670 |
|
|
fr30_elf_check_relocs (abfd, info, sec, relocs)
|
671 |
|
|
bfd *abfd;
|
672 |
|
|
struct bfd_link_info *info;
|
673 |
|
|
asection *sec;
|
674 |
|
|
const Elf_Internal_Rela *relocs;
|
675 |
|
|
{
|
676 |
|
|
Elf_Internal_Shdr *symtab_hdr;
|
677 |
|
|
struct elf_link_hash_entry **sym_hashes;
|
678 |
|
|
const Elf_Internal_Rela *rel;
|
679 |
|
|
const Elf_Internal_Rela *rel_end;
|
680 |
|
|
|
681 |
|
|
if (info->relocatable)
|
682 |
|
|
return TRUE;
|
683 |
|
|
|
684 |
|
|
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
|
685 |
|
|
sym_hashes = elf_sym_hashes (abfd);
|
686 |
|
|
|
687 |
|
|
rel_end = relocs + sec->reloc_count;
|
688 |
|
|
for (rel = relocs; rel < rel_end; rel++)
|
689 |
|
|
{
|
690 |
|
|
struct elf_link_hash_entry *h;
|
691 |
|
|
unsigned long r_symndx;
|
692 |
|
|
|
693 |
|
|
r_symndx = ELF32_R_SYM (rel->r_info);
|
694 |
|
|
if (r_symndx < symtab_hdr->sh_info)
|
695 |
|
|
h = NULL;
|
696 |
|
|
else
|
697 |
|
|
{
|
698 |
|
|
h = sym_hashes[r_symndx - symtab_hdr->sh_info];
|
699 |
|
|
while (h->root.type == bfd_link_hash_indirect
|
700 |
|
|
|| h->root.type == bfd_link_hash_warning)
|
701 |
|
|
h = (struct elf_link_hash_entry *) h->root.u.i.link;
|
702 |
|
|
}
|
703 |
|
|
|
704 |
|
|
switch (ELF32_R_TYPE (rel->r_info))
|
705 |
|
|
{
|
706 |
|
|
/* This relocation describes the C++ object vtable hierarchy.
|
707 |
|
|
Reconstruct it for later use during GC. */
|
708 |
|
|
case R_FR30_GNU_VTINHERIT:
|
709 |
|
|
if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
|
710 |
|
|
return FALSE;
|
711 |
|
|
break;
|
712 |
|
|
|
713 |
|
|
/* This relocation describes which C++ vtable entries are actually
|
714 |
|
|
used. Record for later use during GC. */
|
715 |
|
|
case R_FR30_GNU_VTENTRY:
|
716 |
|
|
BFD_ASSERT (h != NULL);
|
717 |
|
|
if (h != NULL
|
718 |
|
|
&& !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
|
719 |
|
|
return FALSE;
|
720 |
|
|
break;
|
721 |
|
|
}
|
722 |
|
|
}
|
723 |
|
|
|
724 |
|
|
return TRUE;
|
725 |
|
|
}
|
726 |
|
|
|
727 |
|
|
#define ELF_ARCH bfd_arch_fr30
|
728 |
|
|
#define ELF_MACHINE_CODE EM_FR30
|
729 |
|
|
#define ELF_MACHINE_ALT1 EM_CYGNUS_FR30
|
730 |
|
|
#define ELF_MAXPAGESIZE 0x1000
|
731 |
|
|
|
732 |
|
|
#define TARGET_BIG_SYM bfd_elf32_fr30_vec
|
733 |
|
|
#define TARGET_BIG_NAME "elf32-fr30"
|
734 |
|
|
|
735 |
|
|
#define elf_info_to_howto_rel NULL
|
736 |
|
|
#define elf_info_to_howto fr30_info_to_howto_rela
|
737 |
|
|
#define elf_backend_relocate_section fr30_elf_relocate_section
|
738 |
|
|
#define elf_backend_gc_mark_hook fr30_elf_gc_mark_hook
|
739 |
|
|
#define elf_backend_check_relocs fr30_elf_check_relocs
|
740 |
|
|
|
741 |
|
|
#define elf_backend_can_gc_sections 1
|
742 |
|
|
#define elf_backend_rela_normal 1
|
743 |
|
|
|
744 |
|
|
#define bfd_elf32_bfd_reloc_type_lookup fr30_reloc_type_lookup
|
745 |
|
|
#define bfd_elf32_bfd_reloc_name_lookup fr30_reloc_name_lookup
|
746 |
|
|
|
747 |
|
|
#include "elf32-target.h"
|