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a17e14c150
argument is_local. Add argument sym_flags. Check sym_flags
in R_ARM_ABS32 case. Include addend for R_ARM_THM_PC22 case.
(elf32_arm_relocate_section): Don't pass local sym and pass
sym_flags to elf32_arm_final_link_relocate.
939 lines
31 KiB
C
939 lines
31 KiB
C
/* start-sanitize-armelf */
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/* 32-bit ELF support for ARM
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Copyright 1993, 1995, 1998 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 "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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#include "elf/arm.h"
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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 void elf32_arm_info_to_howto
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PARAMS ((bfd *, arelent *, Elf32_Internal_Rela *));
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static boolean elf32_arm_set_private_flags
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PARAMS ((bfd *, flagword));
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static boolean elf32_arm_copy_private_bfd_data
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PARAMS ((bfd *, bfd *));
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static boolean elf32_arm_merge_private_bfd_data
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PARAMS ((bfd *, bfd *));
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static boolean elf32_arm_print_private_bfd_data
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PARAMS ((bfd *, PTR));
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#define USE_RELA
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#define TARGET_UNDERSCORE '_'
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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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0, /* rightshift */
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2, /* 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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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_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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/* FILL ME IN (#13-249) */
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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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struct elf32_arm_reloc_map
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{
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unsigned char 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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};
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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;
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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 = 0;
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i < sizeof (elf32_arm_reloc_map) / sizeof (struct elf32_arm_reloc_map);
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i++)
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{
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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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}
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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;
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arelent *bfd_reloc;
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Elf32_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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/* fixme: need range test */
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/* BFD_ASSERT (r_type < (unsigned int) R_ELF32_ARM_MAX); */
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bfd_reloc->howto = &elf32_arm_howto_table[r_type];
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}
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/* Perform a relocation as part of a final link. */
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static bfd_reloc_status_type
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elf32_arm_final_link_relocate (howto, input_bfd, output_bfd,
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input_section, contents, offset, value,
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addend, info, sym_sec, sym_flags)
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reloc_howto_type *howto;
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bfd *input_bfd;
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bfd *output_bfd;
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asection *input_section;
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bfd_byte *contents;
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bfd_vma offset;
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bfd_vma value;
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bfd_vma addend;
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struct bfd_link_info *info;
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asection *sym_sec;
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unsigned char sym_flags;
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{
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unsigned long r_type = howto->type;
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bfd_byte *hit_data = contents + offset;
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switch (r_type)
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{
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case R_ARM_NONE:
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return bfd_reloc_ok;
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case R_ARM_PC24:
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value -= (input_section->output_offset + offset + 8);
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value += addend;
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value = value >> 2;
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value &= 0xffffff;
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value |= (bfd_get_32 (input_bfd, hit_data) & 0xff000000);
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bfd_put_32 (input_bfd, value, hit_data);
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return bfd_reloc_ok;
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case R_ARM_ABS32:
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value += addend;
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if (sym_flags == C_THUMBSTATFUNC
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|| sym_flags == C_THUMBEXTFUNC)
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value = value | 1;
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bfd_put_32 (input_bfd, value, hit_data);
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return bfd_reloc_ok;
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case R_ARM_REL32:
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value -= (input_section->output_section->vma
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+ input_section->output_offset);
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value += addend;
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bfd_put_32 (input_bfd, value, hit_data);
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return bfd_reloc_ok;
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case R_ARM_ABS8:
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value += addend;
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if ((long) value > 0x7f || (long) value < -0x80)
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return bfd_reloc_overflow;
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bfd_put_8 (input_bfd, value, hit_data);
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return bfd_reloc_ok;
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case R_ARM_ABS16:
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value += addend;
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if ((long) value > 0x7fff || (long) value < -0x8000)
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return bfd_reloc_overflow;
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bfd_put_16 (input_bfd, value, hit_data);
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return bfd_reloc_ok;
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case R_ARM_ABS12:
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/* Support ldr and str instruction for the arm */
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/* Also thumb b (unconditional branch) */
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value += addend;
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if ((long) value > 0x7ff || (long) value < -0x800)
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return bfd_reloc_overflow;
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value |= (bfd_get_32 (input_bfd, hit_data) & 0xfffff000);
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bfd_put_32 (input_bfd, value, hit_data);
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return bfd_reloc_ok;
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case R_ARM_THM_ABS5:
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/* Support ldr and str instructions for the thumb. */
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value += addend;
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if ((long) value > 0x1f || (long) value < -0x10)
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return bfd_reloc_overflow;
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value |= bfd_get_16 (input_bfd, hit_data) & 0xf82f;
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bfd_put_16 (input_bfd, value, hit_data);
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return bfd_reloc_ok;
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case R_ARM_THM_PC22:
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/* thumb BL (branch long instruction). */
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{
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bfd_vma relocation;
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boolean overflow = false;
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bfd_vma insn = bfd_get_32 (input_bfd, hit_data);
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bfd_vma src_mask = 0x007FFFFE;
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bfd_signed_vma reloc_signed_max = (1 << (howto->bitsize - 1)) - 1;
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bfd_signed_vma reloc_signed_min = ~reloc_signed_max;
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bfd_vma check;
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bfd_signed_vma signed_check;
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bfd_vma add;
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bfd_signed_vma signed_add;
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relocation = value + addend;
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relocation -= (input_section->output_section->vma + input_section->output_offset);
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relocation -= offset;
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check = relocation >> howto->rightshift;
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|
|
/* If this is a signed value, the rightshift just dropped
|
|
leading 1 bits (assuming twos complement). */
|
|
if ((bfd_signed_vma) relocation >= 0)
|
|
signed_check = check;
|
|
else
|
|
signed_check = (check | ((bfd_vma) - 1 & ~((bfd_vma) - 1 >> howto->rightshift)));
|
|
|
|
/* Get the value from the object file. */
|
|
if (bfd_big_endian (input_bfd))
|
|
add = (((insn) & 0x07ff0000) >> 4) | (((insn) & 0x7ff) << 1);
|
|
else
|
|
add = ((((insn) & 0x7ff) << 12) | (((insn) & 0x07ff0000) >> 15));
|
|
|
|
/* Get the value from the object file with an appropriate sign.
|
|
The expression involving howto->src_mask isolates the upper
|
|
bit of src_mask. If that bit is set in the value we are
|
|
adding, it is negative, and we subtract out that number times
|
|
two. If src_mask includes the highest possible bit, then we
|
|
can not get the upper bit, but that does not matter since
|
|
signed_add needs no adjustment to become negative in that case. */
|
|
|
|
signed_add = add;
|
|
|
|
if ((add & (((~ src_mask) >> 1) & src_mask)) != 0)
|
|
signed_add -= (((~ src_mask) >> 1) & src_mask) << 1;
|
|
|
|
/* Add the value from the object file, shifted so that it is a
|
|
straight number. */
|
|
/* howto->bitpos == 0 */
|
|
|
|
signed_check += signed_add;
|
|
relocation += signed_add;
|
|
|
|
/* Assumes two's complement. */
|
|
if (signed_check > reloc_signed_max
|
|
|| signed_check < reloc_signed_min)
|
|
overflow = true;
|
|
|
|
/* Put RELOCATION into the correct bits: */
|
|
|
|
if (bfd_big_endian (input_bfd))
|
|
relocation = (((relocation & 0xffe) >> 1) | ((relocation << 4) & 0x07ff0000));
|
|
else
|
|
relocation = (((relocation & 0xffe) << 15) | ((relocation >> 12) & 0x7ff));
|
|
|
|
/* Add RELOCATION to the correct bits of X: */
|
|
insn = ((insn & ~howto->dst_mask) | relocation);
|
|
|
|
/* Put the relocated value back in the object file: */
|
|
bfd_put_32 (input_bfd, insn, hit_data);
|
|
|
|
return (overflow ? bfd_reloc_overflow : bfd_reloc_ok);
|
|
}
|
|
break;
|
|
|
|
case R_ARM_SBREL32:
|
|
return bfd_reloc_notsupported;
|
|
|
|
case R_ARM_AMP_VCALL9:
|
|
return bfd_reloc_notsupported;
|
|
|
|
case R_ARM_RSBREL32:
|
|
return bfd_reloc_notsupported;
|
|
|
|
case R_ARM_THM_RPC22:
|
|
return bfd_reloc_notsupported;
|
|
|
|
case R_ARM_RREL32:
|
|
return bfd_reloc_notsupported;
|
|
|
|
case R_ARM_RABS32:
|
|
return bfd_reloc_notsupported;
|
|
|
|
case R_ARM_RPC24:
|
|
return bfd_reloc_notsupported;
|
|
|
|
case R_ARM_RBASE:
|
|
return bfd_reloc_notsupported;
|
|
|
|
default:
|
|
return bfd_reloc_notsupported;
|
|
}
|
|
}
|
|
/* Relocate an ARM ELF section. */
|
|
static boolean
|
|
elf32_arm_relocate_section (output_bfd, info, input_bfd, input_section,
|
|
contents, relocs, local_syms, local_sections)
|
|
bfd *output_bfd;
|
|
struct bfd_link_info *info;
|
|
bfd *input_bfd;
|
|
asection *input_section;
|
|
bfd_byte *contents;
|
|
Elf_Internal_Rela *relocs;
|
|
Elf_Internal_Sym *local_syms;
|
|
asection **local_sections;
|
|
{
|
|
Elf_Internal_Shdr *symtab_hdr;
|
|
struct elf_link_hash_entry **sym_hashes;
|
|
Elf_Internal_Rela *rel, *relend;
|
|
|
|
symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
|
|
sym_hashes = elf_sym_hashes (input_bfd);
|
|
|
|
rel = relocs;
|
|
relend = relocs + input_section->reloc_count;
|
|
for (; rel < relend; rel++)
|
|
{
|
|
int r_type;
|
|
reloc_howto_type *howto;
|
|
unsigned long r_symndx;
|
|
Elf_Internal_Sym *sym;
|
|
asection *sec;
|
|
struct elf_link_hash_entry *h;
|
|
bfd_vma relocation;
|
|
bfd_reloc_status_type r;
|
|
|
|
r_symndx = ELF32_R_SYM (rel->r_info);
|
|
r_type = ELF32_R_TYPE (rel->r_info);
|
|
howto = elf32_arm_howto_table + r_type;
|
|
|
|
if (info->relocateable)
|
|
{
|
|
/* This is a relocateable link. We don't have to change
|
|
anything, unless the reloc is against a section symbol,
|
|
in which case we have to adjust according to where the
|
|
section symbol winds up in the output section. */
|
|
if (r_symndx < symtab_hdr->sh_info)
|
|
{
|
|
sym = local_syms + r_symndx;
|
|
if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
|
|
{
|
|
sec = local_sections[r_symndx];
|
|
rel->r_addend += sec->output_offset + sym->st_value;
|
|
}
|
|
}
|
|
|
|
continue;
|
|
}
|
|
|
|
/* This is a final link. */
|
|
h = NULL;
|
|
sym = NULL;
|
|
sec = NULL;
|
|
if (r_symndx < symtab_hdr->sh_info)
|
|
{
|
|
sym = local_syms + r_symndx;
|
|
sec = local_sections[r_symndx];
|
|
relocation = (sec->output_section->vma
|
|
+ sec->output_offset
|
|
+ sym->st_value);
|
|
}
|
|
else
|
|
{
|
|
h = sym_hashes[r_symndx - symtab_hdr->sh_info];
|
|
while (h->root.type == bfd_link_hash_indirect
|
|
|| h->root.type == bfd_link_hash_warning)
|
|
h = (struct elf_link_hash_entry *) h->root.u.i.link;
|
|
if (h->root.type == bfd_link_hash_defined
|
|
|| h->root.type == bfd_link_hash_defweak)
|
|
{
|
|
sec = h->root.u.def.section;
|
|
relocation = (h->root.u.def.value
|
|
+ sec->output_section->vma
|
|
+ sec->output_offset);
|
|
}
|
|
else if (h->root.type == bfd_link_hash_undefweak)
|
|
relocation = 0;
|
|
else
|
|
{
|
|
if (! ((*info->callbacks->undefined_symbol)
|
|
(info, h->root.root.string, input_bfd,
|
|
input_section, rel->r_offset)))
|
|
return false;
|
|
relocation = 0;
|
|
}
|
|
}
|
|
|
|
r = elf32_arm_final_link_relocate (howto, input_bfd, output_bfd,
|
|
input_section,
|
|
contents, rel->r_offset,
|
|
relocation, rel->r_addend,
|
|
info, sec, (h ? h->other : sym->st_other));
|
|
|
|
|
|
if (r != bfd_reloc_ok)
|
|
{
|
|
const char *name;
|
|
const char *msg = (const char *)0;
|
|
|
|
if (h != NULL)
|
|
name = h->root.root.string;
|
|
else
|
|
{
|
|
name = (bfd_elf_string_from_elf_section
|
|
(input_bfd, symtab_hdr->sh_link, sym->st_name));
|
|
if (name == NULL || *name == '\0')
|
|
name = bfd_section_name (input_bfd, sec);
|
|
}
|
|
|
|
switch (r)
|
|
{
|
|
case bfd_reloc_overflow:
|
|
if (! ((*info->callbacks->reloc_overflow)
|
|
(info, name, howto->name, (bfd_vma) 0,
|
|
input_bfd, input_section, rel->r_offset)))
|
|
return false;
|
|
break;
|
|
|
|
case bfd_reloc_undefined:
|
|
if (! ((*info->callbacks->undefined_symbol)
|
|
(info, name, input_bfd, input_section,
|
|
rel->r_offset)))
|
|
return false;
|
|
break;
|
|
|
|
case bfd_reloc_outofrange:
|
|
msg = _("internal error: out of range error");
|
|
goto common_error;
|
|
|
|
case bfd_reloc_notsupported:
|
|
msg = _("internal error: unsupported relocation error");
|
|
goto common_error;
|
|
|
|
case bfd_reloc_dangerous:
|
|
msg = _("internal error: dangerous error");
|
|
goto common_error;
|
|
|
|
default:
|
|
msg = _("internal error: unknown error");
|
|
/* fall through */
|
|
|
|
common_error:
|
|
if (!((*info->callbacks->warning)
|
|
(info, msg, name, input_bfd, input_section,
|
|
rel->r_offset)))
|
|
return false;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/* Function to keep ARM specific flags in the ELF header. */
|
|
static boolean
|
|
elf32_arm_set_private_flags (abfd, flags)
|
|
bfd * abfd;
|
|
flagword flags;
|
|
{
|
|
if (elf_flags_init (abfd)
|
|
&& elf_elfheader (abfd)->e_flags != flags)
|
|
{
|
|
if (flags & EF_INTERWORK)
|
|
_bfd_error_handler (_("\
|
|
Warning: Not setting interwork flag of %s since it has already been specified as non-interworking"),
|
|
bfd_get_filename (abfd));
|
|
else
|
|
_bfd_error_handler (_("\
|
|
Warning: Clearing the interwork flag of %s due to outside request"),
|
|
bfd_get_filename (abfd));
|
|
}
|
|
else
|
|
{
|
|
elf_elfheader (abfd)->e_flags = flags;
|
|
elf_flags_init (abfd) = true;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/* Copy backend specific data from one object module to another */
|
|
static boolean
|
|
elf32_arm_copy_private_bfd_data (ibfd, obfd)
|
|
bfd * ibfd;
|
|
bfd * obfd;
|
|
{
|
|
flagword in_flags;
|
|
flagword out_flags;
|
|
|
|
if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour
|
|
|| bfd_get_flavour (obfd) != bfd_target_elf_flavour)
|
|
return true;
|
|
|
|
in_flags = elf_elfheader (ibfd)->e_flags;
|
|
out_flags = elf_elfheader (obfd)->e_flags;
|
|
|
|
if (elf_flags_init (obfd) && in_flags != out_flags)
|
|
{
|
|
/* Cannot mix PIC and non-PIC code. */
|
|
if ((in_flags & EF_PIC) != (out_flags & EF_PIC))
|
|
return false;
|
|
|
|
/* Cannot mix APCS26 and APCS32 code. */
|
|
if ((in_flags & EF_APCS_26) != (out_flags & EF_APCS_26))
|
|
return false;
|
|
|
|
/* Cannot mix float APCS and non-float APCS code. */
|
|
if ((in_flags & EF_APCS_FLOAT) != (out_flags & EF_APCS_FLOAT))
|
|
return false;
|
|
|
|
/* If the src and dest have different interworking flags
|
|
then turn off the interworking bit. */
|
|
if ((in_flags & EF_INTERWORK) != (out_flags & EF_INTERWORK))
|
|
{
|
|
if (out_flags & EF_INTERWORK)
|
|
_bfd_error_handler (_("\
|
|
Warning: Clearing the interwork flag in %s because non-interworking code in %s has been linked with it"),
|
|
bfd_get_filename (obfd), bfd_get_filename (ibfd));
|
|
|
|
in_flags &= ~ EF_INTERWORK;
|
|
}
|
|
}
|
|
|
|
elf_elfheader (obfd)->e_flags = in_flags;
|
|
elf_flags_init (obfd) = true;
|
|
|
|
return true;
|
|
}
|
|
|
|
/* Merge backend specific data from an object file to the output
|
|
object file when linking. */
|
|
static boolean
|
|
elf32_arm_merge_private_bfd_data (ibfd, obfd)
|
|
bfd * ibfd;
|
|
bfd * obfd;
|
|
{
|
|
flagword out_flags;
|
|
flagword in_flags;
|
|
|
|
if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour
|
|
|| bfd_get_flavour (obfd) != bfd_target_elf_flavour)
|
|
return true;
|
|
|
|
/* The input BFD must have had its flags initialised. */
|
|
/* The following seems bogus to me -- The flags are initialized in
|
|
the assembler but I don't think an elf_flags_init field is
|
|
written into the object */
|
|
/* BFD_ASSERT (elf_flags_init (ibfd)); */
|
|
|
|
in_flags = elf_elfheader (ibfd)->e_flags;
|
|
out_flags = elf_elfheader (obfd)->e_flags;
|
|
|
|
if (! elf_flags_init (obfd))
|
|
{
|
|
/* If the input is the default architecture then do not
|
|
bother setting the flags for the output architecture,
|
|
instead allow future merges to do this. If no future
|
|
merges ever set these flags then they will retain their
|
|
unitialised values, which surprise surprise, correspond
|
|
to the default values. */
|
|
if (bfd_get_arch_info (ibfd)->the_default)
|
|
return true;
|
|
|
|
elf_flags_init (obfd) = true;
|
|
elf_elfheader (obfd)->e_flags = in_flags;
|
|
|
|
if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
|
|
&& bfd_get_arch_info (obfd)->the_default)
|
|
return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), bfd_get_mach (ibfd));
|
|
|
|
return true;
|
|
}
|
|
|
|
/* Check flag compatibility. */
|
|
if (in_flags == out_flags)
|
|
return true;
|
|
|
|
/* Complain about various flag mismatches. */
|
|
|
|
if ((in_flags & EF_APCS_26) != (out_flags & EF_APCS_26))
|
|
_bfd_error_handler (_("\
|
|
Error: %s compiled for APCS-%d, whereas %s is compiled for APCS-%d"),
|
|
bfd_get_filename (ibfd),
|
|
in_flags & EF_APCS_26 ? 26 : 32,
|
|
bfd_get_filename (obfd),
|
|
out_flags & EF_APCS_26 ? 26 : 32);
|
|
|
|
if ((in_flags & EF_APCS_FLOAT) != (out_flags & EF_APCS_FLOAT))
|
|
_bfd_error_handler (_("\
|
|
Error: %s passes floats in %s registers, whereas %s passes them in %s registers"),
|
|
bfd_get_filename (ibfd),
|
|
in_flags & EF_APCS_FLOAT ? _("float") : _("integer"),
|
|
bfd_get_filename (obfd),
|
|
out_flags & EF_APCS_26 ? _("float") : _("integer"));
|
|
|
|
if ((in_flags & EF_PIC) != (out_flags & EF_PIC))
|
|
_bfd_error_handler (_("\
|
|
Error: %s is compiled as position %s code, whereas %s is not"),
|
|
bfd_get_filename (ibfd),
|
|
in_flags & EF_PIC ? _("independent") : _("dependent"),
|
|
bfd_get_filename (obfd));
|
|
|
|
/* Interworking mismatch is only a warning. */
|
|
if ((in_flags & EF_INTERWORK) != (out_flags & EF_INTERWORK))
|
|
{
|
|
_bfd_error_handler (_("\
|
|
Warning: %s %s interworking, whereas %s %s"),
|
|
bfd_get_filename (ibfd),
|
|
in_flags & EF_INTERWORK ? _("supports") : _("does not support"),
|
|
bfd_get_filename (obfd),
|
|
out_flags & EF_INTERWORK ? _("does not") : _("does"));
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/* Display the flags field */
|
|
static boolean
|
|
elf32_arm_print_private_bfd_data (abfd, ptr)
|
|
bfd * abfd;
|
|
PTR ptr;
|
|
{
|
|
FILE * file = (FILE *) ptr;
|
|
|
|
BFD_ASSERT (abfd != NULL && ptr != NULL);
|
|
|
|
/* Print normal ELF private data. */
|
|
_bfd_elf_print_private_bfd_data (abfd, ptr);
|
|
|
|
/* Ignore init flag - it may not be set, despite the flags field containing valid data. */
|
|
|
|
/* xgettext:c-format */
|
|
fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags);
|
|
|
|
if (elf_elfheader (abfd)->e_flags & EF_INTERWORK)
|
|
fprintf (file, _(" [interworking enabled]"));
|
|
else
|
|
fprintf (file, _(" [interworking not enabled]"));
|
|
|
|
if (elf_elfheader (abfd)->e_flags & EF_APCS_26)
|
|
fprintf (file, _(" [APCS-26]"));
|
|
else
|
|
fprintf (file, _(" [APCS-32]"));
|
|
|
|
if (elf_elfheader (abfd)->e_flags & EF_APCS_FLOAT)
|
|
fprintf (file, _(" [floats passed in float registers]"));
|
|
else
|
|
fprintf (file, _(" [floats passed in intgere registers]"));
|
|
|
|
if (elf_elfheader (abfd)->e_flags & EF_PIC)
|
|
fprintf (file, _(" [position independent]"));
|
|
else
|
|
fprintf (file, _(" [absolute position]"));
|
|
|
|
fputc ('\n', file);
|
|
|
|
return true;
|
|
}
|
|
|
|
|
|
#define TARGET_LITTLE_SYM bfd_elf32_littlearm_vec
|
|
#define TARGET_LITTLE_NAME "elf32-littlearm"
|
|
#define TARGET_BIG_SYM bfd_elf32_bigarm_vec
|
|
#define TARGET_BIG_NAME "elf32-bigarm"
|
|
#define ELF_ARCH bfd_arch_arm
|
|
#define ELF_MACHINE_CODE EM_ARM
|
|
|
|
#define bfd_elf32_bfd_reloc_type_lookup elf32_arm_reloc_type_lookup
|
|
#define elf_info_to_howto elf32_arm_info_to_howto
|
|
#define elf_info_to_howto_rel 0
|
|
#define elf_backend_relocate_section elf32_arm_relocate_section
|
|
#define bfd_elf32_bfd_copy_private_bfd_data elf32_arm_copy_private_bfd_data
|
|
#define bfd_elf32_bfd_merge_private_bfd_data elf32_arm_merge_private_bfd_data
|
|
#define bfd_elf32_bfd_set_private_flags elf32_arm_set_private_flags
|
|
#define bfd_elf32_bfd_print_private_bfd_data elf32_arm_print_private_bfd_data
|
|
|
|
#define elf_symbol_leading_char '_'
|
|
|
|
#include "elf32-target.h"
|
|
/* end-sanitize-armelf */
|