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| author | Nick Clifton <nickc@redhat.com> | 2003-08-20 08:37:19 +0000 |
|---|---|---|
| committer | Nick Clifton <nickc@redhat.com> | 2003-08-20 08:37:19 +0000 |
| commit | 560e09e9cc912370081be5cccb8d3179a78928b2 (patch) | |
| tree | 9191f0c21af30761875fd1741d540eacdea7b88f /bfd/elf-bfd.h | |
| parent | 04d1ab347d16d701221fa1b49185d096e3158138 (diff) | |
| download | gdb-560e09e9cc912370081be5cccb8d3179a78928b2.zip gdb-560e09e9cc912370081be5cccb8d3179a78928b2.tar.gz gdb-560e09e9cc912370081be5cccb8d3179a78928b2.tar.bz2 | |
Better handking for unresolved symbols
Diffstat (limited to 'bfd/elf-bfd.h')
| -rw-r--r-- | bfd/elf-bfd.h | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/bfd/elf-bfd.h b/bfd/elf-bfd.h index 93f265f..abbe377 100644 --- a/bfd/elf-bfd.h +++ b/bfd/elf-bfd.h @@ -1682,4 +1682,60 @@ extern bfd *_bfd_elf64_bfd_from_remote_memory extern bfd_boolean _sh_elf_set_mach_from_flags (bfd *); +/* This macro is to avoid lots of duplicated code in the body + of xxx_relocate_section() in the various elfxx-xxxx.c files. */ +#define RELOC_FOR_GLOBAL_SYMBOL(h, sym_hashes, r_symndx, symtab_hdr, relocation, sec, unresolved_reloc, info, warned) \ + do \ + { \ + /* It seems this can happen with erroneous or unsupported \ + input (mixing a.out and elf in an archive, for example.) */ \ + if (sym_hashes == NULL) \ + return FALSE; \ + \ + 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; \ + \ + warned = FALSE; \ + unresolved_reloc = FALSE; \ + relocation = 0; \ + if (h->root.type == bfd_link_hash_defined \ + || h->root.type == bfd_link_hash_defweak) \ + { \ + sec = h->root.u.def.section; \ + if (sec == NULL \ + || sec->output_section == NULL) \ + /* Set a flag that will be cleared later if we find a \ + relocation value for this symbol. output_section \ + is typically NULL for symbols satisfied by a shared \ + library. */ \ + unresolved_reloc = TRUE; \ + else \ + relocation = (h->root.u.def.value \ + + sec->output_section->vma \ + + sec->output_offset); \ + } \ + else if (h->root.type == bfd_link_hash_undefweak) \ + ; \ + else if (!info->executable \ + && info->unresolved_syms_in_objects == RM_IGNORE \ + && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) \ + ; \ + else \ + { \ + if (! info->callbacks->undefined_symbol \ + (info, h->root.root.string, input_bfd, \ + input_section, rel->r_offset, \ + ((info->shared && info->unresolved_syms_in_shared_libs == RM_GENERATE_ERROR) \ + || (!info->shared && info->unresolved_syms_in_objects == RM_GENERATE_ERROR) \ + || ELF_ST_VISIBILITY (h->other)) \ + )) \ + return FALSE; \ + warned = TRUE; \ + } \ + } \ + while (0) + #endif /* _LIBELF_H_ */ |