diff options
Diffstat (limited to 'bfd/elf32-i386.c')
| -rw-r--r-- | bfd/elf32-i386.c | 110 |
1 files changed, 84 insertions, 26 deletions
diff --git a/bfd/elf32-i386.c b/bfd/elf32-i386.c index 7165e84..760762d 100644 --- a/bfd/elf32-i386.c +++ b/bfd/elf32-i386.c @@ -154,7 +154,7 @@ static reloc_howto_type elf_howto_table[]= false, /* partial_inplace */ 0, /* src_mask */ 0, /* dst_mask */ - false), + false), /* pcrel_offset */ /* GNU extension to record C++ vtable member usage. */ HOWTO (R_386_GNU_VTENTRY, /* type */ @@ -169,7 +169,7 @@ static reloc_howto_type elf_howto_table[]= false, /* partial_inplace */ 0, /* src_mask */ 0, /* dst_mask */ - false) + false) /* pcrel_offset */ #define R_386_vt ((unsigned int) R_386_GNU_VTENTRY + 1 - R_386_vt_offset) @@ -1745,22 +1745,43 @@ elf_i386_relocate_section (output_bfd, info, input_bfd, input_section, if (info->relocateable) { + bfd_vma val; + bfd_byte *where; + /* This is a relocatable 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) - { - bfd_vma val; + if (r_symndx >= symtab_hdr->sh_info) + continue; - sec = local_sections[r_symndx]; - val = bfd_get_32 (input_bfd, contents + rel->r_offset); - val += sec->output_offset + sym->st_value; - bfd_put_32 (input_bfd, val, contents + rel->r_offset); - } + sym = local_syms + r_symndx; + if (ELF_ST_TYPE (sym->st_info) != STT_SECTION) + continue; + + sec = local_sections[r_symndx]; + val = sec->output_offset; + if (val == 0) + continue; + + where = contents + rel->r_offset; + switch (howto->size) + { + /* FIXME: overflow checks. */ + case 0: + val += bfd_get_8 (input_bfd, where); + bfd_put_8 (input_bfd, val, where); + break; + case 1: + val += bfd_get_16 (input_bfd, where); + bfd_put_16 (input_bfd, val, where); + break; + case 2: + val += bfd_get_32 (input_bfd, where); + bfd_put_32 (input_bfd, val, where); + break; + default: + abort (); } continue; } @@ -1782,24 +1803,62 @@ elf_i386_relocate_section (output_bfd, info, input_bfd, input_section, { asection *msec; bfd_vma addend; + bfd_byte *where = contents + rel->r_offset; - if (howto->src_mask != 0xffffffff) + switch (howto->size) { - (*_bfd_error_handler) - (_("%s(%s+0x%lx): %s relocation against SEC_MERGE section"), - bfd_archive_filename (input_bfd), - bfd_get_section_name (input_bfd, input_section), - (long) rel->r_offset, howto->name); - return false; + case 0: + addend = bfd_get_8 (input_bfd, where); + if (howto->pc_relative) + { + addend = (addend ^ 0x80) - 0x80; + addend += 1; + } + break; + case 1: + addend = bfd_get_16 (input_bfd, where); + if (howto->pc_relative) + { + addend = (addend ^ 0x8000) - 0x8000; + addend += 2; + } + break; + case 2: + addend = bfd_get_32 (input_bfd, where); + if (howto->pc_relative) + { + addend = (addend ^ 0x80000000) - 0x80000000; + addend += 4; + } + break; + default: + abort (); } - addend = bfd_get_32 (input_bfd, contents + rel->r_offset); msec = sec; - addend = - _bfd_elf_rel_local_sym (output_bfd, sym, &msec, addend) - - relocation; + addend = _bfd_elf_rel_local_sym (output_bfd, sym, &msec, addend); + addend -= relocation; addend += msec->output_section->vma + msec->output_offset; - bfd_put_32 (input_bfd, addend, contents + rel->r_offset); + + switch (howto->size) + { + case 0: + /* FIXME: overflow checks. */ + if (howto->pc_relative) + addend -= 1; + bfd_put_8 (input_bfd, addend, where); + break; + case 1: + if (howto->pc_relative) + addend -= 2; + bfd_put_16 (input_bfd, addend, where); + break; + case 2: + if (howto->pc_relative) + addend -= 4; + bfd_put_32 (input_bfd, addend, where); + break; + } } } else @@ -2102,7 +2161,6 @@ elf_i386_relocate_section (output_bfd, info, input_bfd, input_section, if (r == bfd_reloc_overflow) { - if (! ((*info->callbacks->reloc_overflow) (info, name, howto->name, (bfd_vma) 0, input_bfd, input_section, rel->r_offset))) |