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* elf32-frv.c (_frvfdpic_check_discarded_relocs): New.

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(frvfdpic_elf_discard_info): New.
(elf_backend_discard_info): Define for FDPIC.
This commit is contained in:
Alexandre Oliva 2007-05-10 05:18:42 +00:00
parent 2fc3dd1db9
commit 8857127957
2 changed files with 125 additions and 0 deletions
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6
bfd/ChangeLog
View File

@ -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

119
bfd/elf32-frv.c
View File

@ -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