diff options
Diffstat (limited to 'bfd/elf32-arm.c')
| -rw-r--r-- | bfd/elf32-arm.c | 35 |
1 files changed, 31 insertions, 4 deletions
diff --git a/bfd/elf32-arm.c b/bfd/elf32-arm.c index fbb4454..49c80ad 100644 --- a/bfd/elf32-arm.c +++ b/bfd/elf32-arm.c @@ -4376,6 +4376,11 @@ elf32_arm_size_stubs (bfd *output_bfd, sym = local_syms + r_indx; hdr = elf_elfsections (input_bfd)[sym->st_shndx]; sym_sec = hdr->bfd_section; + if (!sym_sec) + /* This is an undefined symbol. It can never + be resolved. */ + continue; + if (ELF_ST_TYPE (sym->st_info) != STT_SECTION) sym_value = sym->st_value; destination = (sym_value + irela->r_addend @@ -6961,7 +6966,6 @@ elf32_arm_final_link_relocate (reloc_howto_type * howto, case R_ARM_PC24: /* Arm B/BL instruction. */ case R_ARM_PLT32: { - bfd_vma from; bfd_signed_vma branch_offset; struct elf32_arm_stub_hash_entry *stub_entry = NULL; @@ -6998,6 +7002,8 @@ elf32_arm_final_link_relocate (reloc_howto_type * howto, || r_type == R_ARM_JUMP24 || r_type == R_ARM_PLT32) { + bfd_vma from; + /* If the call goes through a PLT entry, make sure to check distance to the right destination address. */ if (h != NULL && splt != NULL && h->plt.offset != (bfd_vma) -1) @@ -7066,9 +7072,11 @@ elf32_arm_final_link_relocate (reloc_howto_type * howto, signed_addend >>= howto->rightshift; /* A branch to an undefined weak symbol is turned into a jump to - the next instruction unless a PLT entry will be created. */ - if (h && h->root.type == bfd_link_hash_undefweak - && !(splt != NULL && h->plt.offset != (bfd_vma) -1)) + the next instruction unless a PLT entry will be created. + Do the same for local undefined symbols. */ + if (h ? (h->root.type == bfd_link_hash_undefweak + && !(splt != NULL && h->plt.offset != (bfd_vma) -1)) + : bfd_is_und_section (sym_sec)) { value = (bfd_get_32 (input_bfd, hit_data) & 0xf0000000) | 0x0affffff; @@ -8714,6 +8722,25 @@ elf32_arm_relocate_section (bfd * output_bfd, sym = local_syms + r_symndx; sym_type = ELF32_ST_TYPE (sym->st_info); sec = local_sections[r_symndx]; + + /* An object file might have a reference to a local + undefined symbol. This is a daft object file, but we + should at least do something about it. V4BX & NONE + relocations do not use the symbol and are explicitly + allowed to use the undefined symbol, so allow those. */ + if (r_type != R_ARM_V4BX + && r_type != R_ARM_NONE + && bfd_is_und_section (sec) + && ELF_ST_BIND (sym->st_info) != STB_WEAK) + { + if (!info->callbacks->undefined_symbol + (info, bfd_elf_string_from_elf_section + (input_bfd, symtab_hdr->sh_link, sym->st_name), + input_bfd, input_section, + rel->r_offset, TRUE)) + return FALSE; + } + if (globals->use_rel) { relocation = (sec->output_section->vma |