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* elf64-ppc.c (struct ppc64_elf_obj_tdata): Add has_dotsym.

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(ppc64_elf_add_symbol_hook): Set has_dotsym.
	(ppc64_elf_check_directives): Only process syms when has_dotsym.
	(func_desc_adjust): Hide fake function descriptors when function
	code entry is defined.
	(adjust_opd_syms): Adjust for deleted_section becoming union field.
This commit is contained in:
Alan Modra 2005-05-09 10:30:40 +00:00
parent 44eb18016c
commit 433817ddde
2 changed files with 51 additions and 14 deletions
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9
bfd/ChangeLog
View file

@ -1,3 +1,12 @@
2005-05-09 Alan Modra <amodra@bigpond.net.au>
* elf64-ppc.c (struct ppc64_elf_obj_tdata): Add has_dotsym.
(ppc64_elf_add_symbol_hook): Set has_dotsym.
(ppc64_elf_check_directives): Only process syms when has_dotsym.
(func_desc_adjust): Hide fake function descriptors when function
code entry is defined.
(adjust_opd_syms): Adjust for deleted_section becoming union field.
2005-05-09 Alan Modra <amodra@bigpond.net.au>
* elfcode.h (elf_object_p): Add more sanity checks on elf header.

56
bfd/elf64-ppc.c
View file

@ -2369,9 +2369,14 @@ struct ppc64_elf_obj_tdata
asection *got;
asection *relgot;
/* Used during garbage collection. We attach global symbols defined
on removed .opd entries to this section so that the sym is removed. */
asection *deleted_section;
union {
/* Used during garbage collection. We attach global symbols defined
on removed .opd entries to this section so that the sym is removed. */
asection *deleted_section;
/* Used when adding symbols. */
bfd_boolean has_dotsym;
} u;
/* TLS local dynamic got entry handling. Suppose for multiple GOT
sections means we potentially need one of these for each input bfd. */
@ -4042,10 +4047,10 @@ make_fdh (struct bfd_link_info *info,
function type. */
static bfd_boolean
ppc64_elf_add_symbol_hook (bfd *ibfd ATTRIBUTE_UNUSED,
ppc64_elf_add_symbol_hook (bfd *ibfd,
struct bfd_link_info *info ATTRIBUTE_UNUSED,
Elf_Internal_Sym *isym,
const char **name ATTRIBUTE_UNUSED,
const char **name,
flagword *flags ATTRIBUTE_UNUSED,
asection **sec,
bfd_vma *value ATTRIBUTE_UNUSED)
@ -4053,6 +4058,13 @@ ppc64_elf_add_symbol_hook (bfd *ibfd ATTRIBUTE_UNUSED,
if (*sec != NULL
&& strcmp (bfd_get_section_name (ibfd, *sec), ".opd") == 0)
isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC);
if ((*name)[0] == '.'
&& ELF_ST_BIND (isym->st_info) == STB_GLOBAL
&& ELF_ST_TYPE (isym->st_info) < STT_SECTION
&& is_ppc64_elf_target (ibfd->xvec))
ppc64_elf_tdata (ibfd)->u.has_dotsym = 1;
return TRUE;
}
@ -4166,12 +4178,18 @@ add_symbol_adjust (struct elf_link_hash_entry *h, void *inf)
}
static bfd_boolean
ppc64_elf_check_directives (bfd *abfd ATTRIBUTE_UNUSED,
struct bfd_link_info *info)
ppc64_elf_check_directives (bfd *abfd, struct bfd_link_info *info)
{
struct ppc_link_hash_table *htab;
struct add_symbol_adjust_data data;
if (!is_ppc64_elf_target (abfd->xvec))
return TRUE;
if (!ppc64_elf_tdata (abfd)->u.has_dotsym)
return TRUE;
ppc64_elf_tdata (abfd)->u.deleted_section = NULL;
htab = ppc_hash_table (info);
if (!is_ppc64_elf_target (htab->elf.root.creator))
return TRUE;
@ -5491,15 +5509,25 @@ func_desc_adjust (struct elf_link_hash_entry *h, void *inf)
}
/* Fake function descriptors are made undefweak. If the function
code symbol is strong undefined, make the fake sym the same. */
code symbol is strong undefined, make the fake sym the same.
If the function code symbol is defined, then force the fake
descriptor local; We can't support overriding of symbols in a
shared library on a fake descriptor. */
if (fdh != NULL
&& fdh->fake
&& fdh->elf.root.type == bfd_link_hash_undefweak
&& fh->elf.root.type == bfd_link_hash_undefined)
&& fdh->elf.root.type == bfd_link_hash_undefweak)
{
fdh->elf.root.type = bfd_link_hash_undefined;
bfd_link_add_undef (&htab->elf.root, &fdh->elf.root);
if (fh->elf.root.type == bfd_link_hash_undefined)
{
fdh->elf.root.type = bfd_link_hash_undefined;
bfd_link_add_undef (&htab->elf.root, &fdh->elf.root);
}
else if (fh->elf.root.type == bfd_link_hash_defined
|| fh->elf.root.type == bfd_link_hash_defweak)
{
_bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE);
}
}
if (fdh != NULL
@ -5976,13 +6004,13 @@ adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
if (adjust == -1)
{
/* This entry has been deleted. */
asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section;
asection *dsec = ppc64_elf_tdata (sym_sec->owner)->u.deleted_section;
if (dsec == NULL)
{
for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next)
if (elf_discarded_section (dsec))
{
ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec;
ppc64_elf_tdata (sym_sec->owner)->u.deleted_section = dsec;
break;
}
}