427 lines
14 KiB
C
427 lines
14 KiB
C
/* 32-bit ELF support for ARM old 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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#define OLD_ARM_ABI
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#define bfd_elf32_arm_allocate_interworking_sections \
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bfd_elf32_arm_oabi_allocate_interworking_sections
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#define bfd_elf32_arm_get_bfd_for_interworking \
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bfd_elf32_arm_oabi_get_bfd_for_interworking
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#define bfd_elf32_arm_process_before_allocation \
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bfd_elf32_arm_oabi_process_before_allocation
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#define bfd_elf32_arm_add_glue_sections_to_bfd \
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bfd_elf32_arm_oabi_add_glue_sections_to_bfd
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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 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 * find_howto PARAMS ((unsigned int));
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static void elf32_arm_info_to_howto PARAMS ((bfd *, arelent *, Elf_Internal_Rela *));
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static reloc_howto_type * elf32_arm_reloc_type_lookup PARAMS ((bfd *, bfd_reloc_code_real_type));
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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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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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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_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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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_ARM_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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/* XXX - gap in index numbering here. */
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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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/* XXX - gap in index numbering here. */
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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 */
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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_RREL32", /* 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_RABS32, /* 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_RABS32", /* 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_RPC24, /* 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_RPC24", /* 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_RBASE, /* 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_RBASE", /* 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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/* Locate a reloc in the howto table. This function must be used
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when the entry number is is > R_ARM_GNU_VTINHERIT. */
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static reloc_howto_type *
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find_howto (r_type)
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unsigned int r_type;
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{
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int i;
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for (i = NUM_ELEM (elf32_arm_howto_table); i--;)
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if (elf32_arm_howto_table [i].type == r_type)
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return elf32_arm_howto_table + i;
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return NULL;
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}
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static void
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elf32_arm_info_to_howto (abfd, bfd_reloc, elf_reloc)
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bfd *abfd ATTRIBUTE_UNUSED;
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arelent *bfd_reloc;
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Elf_Internal_Rela *elf_reloc;
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{
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unsigned int r_type;
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r_type = ELF32_R_TYPE (elf_reloc->r_info);
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if (r_type <= R_ARM_GNU_VTINHERIT)
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bfd_reloc->howto = & elf32_arm_howto_table[r_type];
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else
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bfd_reloc->howto = find_howto (r_type);
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}
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struct elf32_arm_reloc_map
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{
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bfd_reloc_code_real_type bfd_reloc_val;
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unsigned char elf_reloc_val;
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};
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static const struct elf32_arm_reloc_map elf32_arm_reloc_map[] =
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{
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{BFD_RELOC_NONE, R_ARM_NONE },
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{BFD_RELOC_ARM_PCREL_BRANCH, R_ARM_PC24 },
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{BFD_RELOC_32, R_ARM_ABS32 },
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{BFD_RELOC_32_PCREL, R_ARM_REL32 },
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{BFD_RELOC_8, R_ARM_ABS8 },
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{BFD_RELOC_16, R_ARM_ABS16 },
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{BFD_RELOC_ARM_OFFSET_IMM, R_ARM_ABS12 },
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{BFD_RELOC_ARM_THUMB_OFFSET, R_ARM_THM_ABS5 },
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{BFD_RELOC_THUMB_PCREL_BRANCH23, R_ARM_THM_PC22 },
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{BFD_RELOC_NONE, R_ARM_SBREL32 },
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{BFD_RELOC_NONE, R_ARM_AMP_VCALL9 },
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{BFD_RELOC_THUMB_PCREL_BRANCH12, R_ARM_THM_PC11 },
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{BFD_RELOC_THUMB_PCREL_BRANCH9, R_ARM_THM_PC9 },
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{BFD_RELOC_VTABLE_INHERIT, R_ARM_GNU_VTINHERIT },
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{BFD_RELOC_VTABLE_ENTRY, R_ARM_GNU_VTENTRY }
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};
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static reloc_howto_type *
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elf32_arm_reloc_type_lookup (abfd, code)
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bfd * abfd ATTRIBUTE_UNUSED;
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bfd_reloc_code_real_type code;
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{
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unsigned int i;
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for (i = NUM_ELEM (elf32_arm_reloc_map); i--;)
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if (elf32_arm_reloc_map[i].bfd_reloc_val == code)
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return & elf32_arm_howto_table [elf32_arm_reloc_map[i].elf_reloc_val];
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if (code == BFD_RELOC_ARM_PLT32)
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return find_howto (R_ARM_PLT32);
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return NULL;
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}
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#include "elf32-arm.h"
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