diff options
| -rw-r--r-- | bfd/ChangeLog | 6 | ||||
| -rw-r--r-- | bfd/elf32-frv.c | 119 |
2 files changed, 125 insertions, 0 deletions
diff --git a/bfd/ChangeLog b/bfd/ChangeLog index 2fe431b0ff8..ce5750502b2 100644 --- a/bfd/ChangeLog +++ b/bfd/ChangeLog @@ -1,3 +1,9 @@ +2007-05-10 Alexandre Oliva <aoliva@redhat.com> + + * elf32-frv.c (_frvfdpic_check_discarded_relocs): New. + (frvfdpic_elf_discard_info): New. + (elf_backend_discard_info): Define for FDPIC. + 2007-05-09 Mark Shinwell <shinwell@codesourcery.com> * elf32-arm.c (bfd_elf32_arm_vfp11_erratum_scan): Don't diff --git a/bfd/elf32-frv.c b/bfd/elf32-frv.c index 742f7d36516..0981522a7f3 100644 --- a/bfd/elf32-frv.c +++ b/bfd/elf32-frv.c @@ -5618,6 +5618,122 @@ elf32_frvfdpic_always_size_sections (bfd *output_bfd, return TRUE; } +/* Check whether any of the relocations was optimized away, and + subtract it from the relocation or fixup count. */ +static bfd_boolean +_frvfdpic_check_discarded_relocs (bfd *abfd, asection *sec, + struct bfd_link_info *info, + + bfd_boolean *changed) +{ + Elf_Internal_Shdr *symtab_hdr; + struct elf_link_hash_entry **sym_hashes, **sym_hashes_end; + Elf_Internal_Rela *rel, *erel; + + if ((sec->flags & SEC_RELOC) == 0 + || sec->reloc_count == 0) + return TRUE; + + symtab_hdr = &elf_tdata (abfd)->symtab_hdr; + sym_hashes = elf_sym_hashes (abfd); + sym_hashes_end = sym_hashes + symtab_hdr->sh_size/sizeof(Elf32_External_Sym); + if (!elf_bad_symtab (abfd)) + sym_hashes_end -= symtab_hdr->sh_info; + + rel = elf_section_data (sec)->relocs; + + /* Now examine each relocation. */ + for (erel = rel + sec->reloc_count; rel < erel; rel++) + { + struct elf_link_hash_entry *h; + unsigned long r_symndx; + struct frvfdpic_relocs_info *picrel; + struct _frvfdpic_dynamic_got_info *dinfo; + + if (ELF32_R_TYPE (rel->r_info) != R_FRV_32 + && ELF32_R_TYPE (rel->r_info) != R_FRV_FUNCDESC) + continue; + + if (_bfd_elf_section_offset (sec->output_section->owner, + info, sec, rel->r_offset) + != (bfd_vma)-1) + continue; + + r_symndx = ELF32_R_SYM (rel->r_info); + if (r_symndx < symtab_hdr->sh_info) + h = NULL; + 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 != NULL) + picrel = frvfdpic_relocs_info_for_global (frvfdpic_relocs_info (info), + abfd, h, + rel->r_addend, NO_INSERT); + else + picrel = frvfdpic_relocs_info_for_local (frvfdpic_relocs_info (info), + abfd, r_symndx, + rel->r_addend, NO_INSERT); + + if (! picrel) + return FALSE; + + *changed = TRUE; + dinfo = frvfdpic_dynamic_got_plt_info (info); + + _frvfdpic_count_relocs_fixups (picrel, dinfo, TRUE); + if (ELF32_R_TYPE (rel->r_info) == R_FRV_32) + picrel->relocs32--; + else /* we know (ELF32_R_TYPE (rel->r_info) == R_FRV_FUNCDESC) */ + picrel->relocsfd--; + _frvfdpic_count_relocs_fixups (picrel, dinfo, FALSE); + } + + return TRUE; +} + +static bfd_boolean +frvfdpic_elf_discard_info (bfd *ibfd, + struct elf_reloc_cookie *cookie ATTRIBUTE_UNUSED, + struct bfd_link_info *info) +{ + bfd_boolean changed = FALSE; + asection *s; + bfd *obfd = NULL; + + /* Account for relaxation of .eh_frame section. */ + for (s = ibfd->sections; s; s = s->next) + if (s->sec_info_type == ELF_INFO_TYPE_EH_FRAME) + { + if (!_frvfdpic_check_discarded_relocs (ibfd, s, info, &changed)) + return FALSE; + obfd = s->output_section->owner; + } + + if (changed) + { + struct _frvfdpic_dynamic_got_plt_info gpinfo; + + memset (&gpinfo, 0, sizeof (gpinfo)); + memcpy (&gpinfo.g, frvfdpic_dynamic_got_plt_info (info), + sizeof (gpinfo.g)); + + /* Clear GOT and PLT assignments. */ + htab_traverse (frvfdpic_relocs_info (info), + _frvfdpic_reset_got_plt_entries, + NULL); + + if (!_frvfdpic_size_got_plt (obfd, &gpinfo)) + return FALSE; + } + + return TRUE; +} + /* Look for opportunities to relax TLS relocations. We can assume we're linking the main executable or a static-tls library, since otherwise we wouldn't have got here. */ @@ -6969,6 +7085,9 @@ elf32_frv_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) #define elf_backend_finish_dynamic_sections \ elf32_frvfdpic_finish_dynamic_sections +#undef elf_backend_discard_info +#define elf_backend_discard_info \ + frvfdpic_elf_discard_info #undef elf_backend_can_make_relative_eh_frame #define elf_backend_can_make_relative_eh_frame \ frvfdpic_elf_use_relative_eh_frame |