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https://github.com/darlinghq/darling-gdb.git
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753 lines
24 KiB
C
753 lines
24 KiB
C
/* 32-bit ELF support for ARM new abi option.
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Copyright 1999, 2000, 2001, 2002 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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#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_REL 1
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#define TARGET_LITTLE_SYM bfd_elf32_littlearm_vec
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#define TARGET_LITTLE_NAME "elf32-littlearm"
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#define TARGET_BIG_SYM bfd_elf32_bigarm_vec
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#define TARGET_BIG_NAME "elf32-bigarm"
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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 reloc_howto_type * elf32_arm_reloc_type_lookup
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PARAMS ((bfd * abfd, bfd_reloc_code_real_type code));
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static bfd_boolean elf32_arm_nabi_grok_prstatus
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PARAMS ((bfd *abfd, Elf_Internal_Note *note));
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static bfd_boolean elf32_arm_nabi_grok_psinfo
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PARAMS ((bfd *abfd, Elf_Internal_Note *note));
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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[] =
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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_PC13, /* 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_PC13", /* 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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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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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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/* 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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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_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_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_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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HOWTO (R_ARM_SWI24, /* 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_signed,/* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_ARM_SWI24", /* name */
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FALSE, /* partial_inplace */
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0x00000000, /* src_mask */
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0x00000000, /* dst_mask */
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FALSE), /* pcrel_offset */
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HOWTO (R_ARM_THM_SWI8, /* 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_signed,/* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_ARM_SWI8", /* name */
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FALSE, /* partial_inplace */
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0x00000000, /* src_mask */
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0x00000000, /* dst_mask */
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FALSE), /* pcrel_offset */
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/* BLX instruction for the ARM. */
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HOWTO (R_ARM_XPC25, /* type */
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2, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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25, /* 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_XPC25", /* 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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/* BLX instruction for the Thumb. */
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HOWTO (R_ARM_THM_XPC22, /* type */
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2, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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22, /* 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_XPC22", /* 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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/* These next three relocs are not defined, but we need to fill the space. */
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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_unknown_17", /* 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_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_unknown_18", /* 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_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_unknown_19", /* 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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/* Relocs used in ARM Linux */
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HOWTO (R_ARM_COPY, /* 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_COPY", /* name */
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TRUE, /* 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_GLOB_DAT, /* 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_GLOB_DAT", /* name */
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TRUE, /* 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_JUMP_SLOT, /* 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_JUMP_SLOT", /* name */
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TRUE, /* 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_RELATIVE, /* 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_RELATIVE", /* name */
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TRUE, /* 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_GOTOFF, /* 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_GOTOFF", /* name */
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TRUE, /* 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_GOTPC, /* 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_GOTPC", /* name */
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TRUE, /* 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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HOWTO (R_ARM_GOT32, /* 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_GOT32", /* name */
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TRUE, /* 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_PLT32, /* type */
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2, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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26, /* 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_PLT32", /* name */
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TRUE, /* 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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/* End of relocs used in ARM Linux */
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HOWTO (R_ARM_RREL32, /* 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 */
|
|
FALSE, /* pc_relative */
|
|
0, /* bitpos */
|
|
complain_overflow_dont,/* complain_on_overflow */
|
|
bfd_elf_generic_reloc, /* special_function */
|
|
"R_ARM_RREL32", /* name */
|
|
FALSE, /* partial_inplace */
|
|
0, /* src_mask */
|
|
0, /* dst_mask */
|
|
FALSE), /* pcrel_offset */
|
|
|
|
HOWTO (R_ARM_RABS32, /* type */
|
|
0, /* rightshift */
|
|
0, /* size (0 = byte, 1 = short, 2 = long) */
|
|
0, /* bitsize */
|
|
FALSE, /* pc_relative */
|
|
0, /* bitpos */
|
|
complain_overflow_dont,/* complain_on_overflow */
|
|
bfd_elf_generic_reloc, /* special_function */
|
|
"R_ARM_RABS32", /* name */
|
|
FALSE, /* partial_inplace */
|
|
0, /* src_mask */
|
|
0, /* dst_mask */
|
|
FALSE), /* pcrel_offset */
|
|
|
|
HOWTO (R_ARM_RPC24, /* type */
|
|
0, /* rightshift */
|
|
0, /* size (0 = byte, 1 = short, 2 = long) */
|
|
0, /* bitsize */
|
|
FALSE, /* pc_relative */
|
|
0, /* bitpos */
|
|
complain_overflow_dont,/* complain_on_overflow */
|
|
bfd_elf_generic_reloc, /* special_function */
|
|
"R_ARM_RPC24", /* name */
|
|
FALSE, /* partial_inplace */
|
|
0, /* src_mask */
|
|
0, /* dst_mask */
|
|
FALSE), /* pcrel_offset */
|
|
|
|
HOWTO (R_ARM_RBASE, /* type */
|
|
0, /* rightshift */
|
|
0, /* size (0 = byte, 1 = short, 2 = long) */
|
|
0, /* bitsize */
|
|
FALSE, /* pc_relative */
|
|
0, /* bitpos */
|
|
complain_overflow_dont,/* complain_on_overflow */
|
|
bfd_elf_generic_reloc, /* special_function */
|
|
"R_ARM_RBASE", /* name */
|
|
FALSE, /* partial_inplace */
|
|
0, /* src_mask */
|
|
0, /* dst_mask */
|
|
FALSE), /* pcrel_offset */
|
|
|
|
};
|
|
|
|
/* GNU extension to record C++ vtable hierarchy */
|
|
static reloc_howto_type elf32_arm_vtinherit_howto =
|
|
HOWTO (R_ARM_GNU_VTINHERIT, /* type */
|
|
0, /* rightshift */
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
|
0, /* bitsize */
|
|
FALSE, /* pc_relative */
|
|
0, /* bitpos */
|
|
complain_overflow_dont, /* complain_on_overflow */
|
|
NULL, /* special_function */
|
|
"R_ARM_GNU_VTINHERIT", /* name */
|
|
FALSE, /* partial_inplace */
|
|
0, /* src_mask */
|
|
0, /* dst_mask */
|
|
FALSE); /* pcrel_offset */
|
|
|
|
/* GNU extension to record C++ vtable member usage */
|
|
static reloc_howto_type elf32_arm_vtentry_howto =
|
|
HOWTO (R_ARM_GNU_VTENTRY, /* type */
|
|
0, /* rightshift */
|
|
2, /* size (0 = byte, 1 = short, 2 = long) */
|
|
0, /* bitsize */
|
|
FALSE, /* pc_relative */
|
|
0, /* bitpos */
|
|
complain_overflow_dont, /* complain_on_overflow */
|
|
_bfd_elf_rel_vtable_reloc_fn, /* special_function */
|
|
"R_ARM_GNU_VTENTRY", /* name */
|
|
FALSE, /* partial_inplace */
|
|
0, /* src_mask */
|
|
0, /* dst_mask */
|
|
FALSE); /* pcrel_offset */
|
|
|
|
/* 12 bit pc relative */
|
|
static reloc_howto_type elf32_arm_thm_pc11_howto =
|
|
HOWTO (R_ARM_THM_PC11, /* type */
|
|
1, /* rightshift */
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
|
11, /* bitsize */
|
|
TRUE, /* pc_relative */
|
|
0, /* bitpos */
|
|
complain_overflow_signed, /* complain_on_overflow */
|
|
bfd_elf_generic_reloc, /* special_function */
|
|
"R_ARM_THM_PC11", /* name */
|
|
FALSE, /* partial_inplace */
|
|
0x000007ff, /* src_mask */
|
|
0x000007ff, /* dst_mask */
|
|
TRUE); /* pcrel_offset */
|
|
|
|
/* 12 bit pc relative */
|
|
static reloc_howto_type elf32_arm_thm_pc9_howto =
|
|
HOWTO (R_ARM_THM_PC9, /* type */
|
|
1, /* rightshift */
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
|
8, /* bitsize */
|
|
TRUE, /* pc_relative */
|
|
0, /* bitpos */
|
|
complain_overflow_signed, /* complain_on_overflow */
|
|
bfd_elf_generic_reloc, /* special_function */
|
|
"R_ARM_THM_PC9", /* name */
|
|
FALSE, /* partial_inplace */
|
|
0x000000ff, /* src_mask */
|
|
0x000000ff, /* dst_mask */
|
|
TRUE); /* pcrel_offset */
|
|
|
|
static void elf32_arm_info_to_howto
|
|
PARAMS ((bfd *, arelent *, Elf_Internal_Rela *));
|
|
|
|
static void
|
|
elf32_arm_info_to_howto (abfd, bfd_reloc, elf_reloc)
|
|
bfd * abfd ATTRIBUTE_UNUSED;
|
|
arelent * bfd_reloc;
|
|
Elf_Internal_Rela * elf_reloc;
|
|
{
|
|
unsigned int r_type;
|
|
|
|
r_type = ELF32_R_TYPE (elf_reloc->r_info);
|
|
|
|
switch (r_type)
|
|
{
|
|
case R_ARM_GNU_VTINHERIT:
|
|
bfd_reloc->howto = & elf32_arm_vtinherit_howto;
|
|
break;
|
|
|
|
case R_ARM_GNU_VTENTRY:
|
|
bfd_reloc->howto = & elf32_arm_vtentry_howto;
|
|
break;
|
|
|
|
case R_ARM_THM_PC11:
|
|
bfd_reloc->howto = & elf32_arm_thm_pc11_howto;
|
|
break;
|
|
|
|
case R_ARM_THM_PC9:
|
|
bfd_reloc->howto = & elf32_arm_thm_pc9_howto;
|
|
break;
|
|
|
|
default:
|
|
if (r_type >= NUM_ELEM (elf32_arm_howto_table))
|
|
bfd_reloc->howto = NULL;
|
|
else
|
|
bfd_reloc->howto = & elf32_arm_howto_table[r_type];
|
|
break;
|
|
}
|
|
}
|
|
|
|
struct elf32_arm_reloc_map
|
|
{
|
|
bfd_reloc_code_real_type bfd_reloc_val;
|
|
unsigned char elf_reloc_val;
|
|
};
|
|
|
|
static const struct elf32_arm_reloc_map elf32_arm_reloc_map[] =
|
|
{
|
|
{BFD_RELOC_NONE, R_ARM_NONE},
|
|
{BFD_RELOC_ARM_PCREL_BRANCH, R_ARM_PC24},
|
|
{BFD_RELOC_ARM_PCREL_BLX, R_ARM_XPC25},
|
|
{BFD_RELOC_THUMB_PCREL_BLX, R_ARM_THM_XPC22},
|
|
{BFD_RELOC_32, R_ARM_ABS32},
|
|
{BFD_RELOC_32_PCREL, R_ARM_REL32},
|
|
{BFD_RELOC_8, R_ARM_ABS8},
|
|
{BFD_RELOC_16, R_ARM_ABS16},
|
|
{BFD_RELOC_ARM_OFFSET_IMM, R_ARM_ABS12},
|
|
{BFD_RELOC_ARM_THUMB_OFFSET, R_ARM_THM_ABS5},
|
|
{BFD_RELOC_THUMB_PCREL_BRANCH23, R_ARM_THM_PC22},
|
|
{BFD_RELOC_ARM_COPY, R_ARM_COPY},
|
|
{BFD_RELOC_ARM_GLOB_DAT, R_ARM_GLOB_DAT},
|
|
{BFD_RELOC_ARM_JUMP_SLOT, R_ARM_JUMP_SLOT},
|
|
{BFD_RELOC_ARM_RELATIVE, R_ARM_RELATIVE},
|
|
{BFD_RELOC_ARM_GOTOFF, R_ARM_GOTOFF},
|
|
{BFD_RELOC_ARM_GOTPC, R_ARM_GOTPC},
|
|
{BFD_RELOC_ARM_GOT32, R_ARM_GOT32},
|
|
{BFD_RELOC_ARM_PLT32, R_ARM_PLT32}
|
|
};
|
|
|
|
static reloc_howto_type *
|
|
elf32_arm_reloc_type_lookup (abfd, code)
|
|
bfd *abfd ATTRIBUTE_UNUSED;
|
|
bfd_reloc_code_real_type code;
|
|
{
|
|
unsigned int i;
|
|
|
|
switch (code)
|
|
{
|
|
case BFD_RELOC_VTABLE_INHERIT:
|
|
return & elf32_arm_vtinherit_howto;
|
|
|
|
case BFD_RELOC_VTABLE_ENTRY:
|
|
return & elf32_arm_vtentry_howto;
|
|
|
|
case BFD_RELOC_THUMB_PCREL_BRANCH12:
|
|
return & elf32_arm_thm_pc11_howto;
|
|
|
|
case BFD_RELOC_THUMB_PCREL_BRANCH9:
|
|
return & elf32_arm_thm_pc9_howto;
|
|
|
|
default:
|
|
for (i = 0; i < NUM_ELEM (elf32_arm_reloc_map); i ++)
|
|
if (elf32_arm_reloc_map[i].bfd_reloc_val == code)
|
|
return & elf32_arm_howto_table[elf32_arm_reloc_map[i].elf_reloc_val];
|
|
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
/* Support for core dump NOTE sections */
|
|
static bfd_boolean
|
|
elf32_arm_nabi_grok_prstatus (abfd, note)
|
|
bfd *abfd;
|
|
Elf_Internal_Note *note;
|
|
{
|
|
int offset;
|
|
size_t raw_size;
|
|
|
|
switch (note->descsz)
|
|
{
|
|
default:
|
|
return FALSE;
|
|
|
|
case 148: /* Linux/ARM 32-bit*/
|
|
/* pr_cursig */
|
|
elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
|
|
|
|
/* pr_pid */
|
|
elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
|
|
|
|
/* pr_reg */
|
|
offset = 72;
|
|
raw_size = 72;
|
|
|
|
break;
|
|
}
|
|
|
|
/* Make a ".reg/999" section. */
|
|
return _bfd_elfcore_make_pseudosection (abfd, ".reg",
|
|
raw_size, note->descpos + offset);
|
|
}
|
|
|
|
static bfd_boolean
|
|
elf32_arm_nabi_grok_psinfo (abfd, note)
|
|
bfd *abfd;
|
|
Elf_Internal_Note *note;
|
|
{
|
|
switch (note->descsz)
|
|
{
|
|
default:
|
|
return FALSE;
|
|
|
|
case 124: /* Linux/ARM elf_prpsinfo */
|
|
elf_tdata (abfd)->core_program
|
|
= _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
|
|
elf_tdata (abfd)->core_command
|
|
= _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
|
|
}
|
|
|
|
/* Note that for some reason, a spurious space is tacked
|
|
onto the end of the args in some (at least one anyway)
|
|
implementations, so strip it off if it exists. */
|
|
|
|
{
|
|
char *command = elf_tdata (abfd)->core_command;
|
|
int n = strlen (command);
|
|
|
|
if (0 < n && command[n - 1] == ' ')
|
|
command[n - 1] = '\0';
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
#define elf_backend_grok_prstatus elf32_arm_nabi_grok_prstatus
|
|
#define elf_backend_grok_psinfo elf32_arm_nabi_grok_psinfo
|
|
|
|
#include "elf32-arm.h"
|