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* elf32-ppc.c (allocate_dynrelocs): Correct plt offset assigned

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for second and subsequent list entries.  Only allocate multiple
	glink stubs when shared or pie.
	(ppc_elf_finish_dynamic_symbol): Break out early when only one
	glink stub is needed.
This commit is contained in:
Alan Modra 2005-05-20 02:37:21 +00:00
parent f53fee9196
commit 28e99bb619
2 changed files with 57 additions and 33 deletions
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8
bfd/ChangeLog
View File

@ -1,3 +1,11 @@
2005-05-20 Alan Modra <amodra@bigpond.net.au>
* elf32-ppc.c (allocate_dynrelocs): Correct plt offset assigned
for second and subsequent list entries. Only allocate multiple
glink stubs when shared or pie.
(ppc_elf_finish_dynamic_symbol): Break out early when only one
glink stub is needed.
2005-05-19 Zack Weinberg <zack@codesourcery.com>
* Makefile.am: Have 'all' depend on 'info'.

82
bfd/elf32-ppc.c
View File

@ -4058,6 +4058,8 @@ allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
{
struct plt_entry *ent;
bfd_boolean doneone = FALSE;
bfd_vma plt_offset = 0, glink_offset = 0;
for (ent = h->plt.plist; ent != NULL; ent = ent->next)
if (ent->plt.refcount > 0)
{
@ -4076,56 +4078,67 @@ allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
if (!htab->old_plt)
{
ent->plt.offset = s->size;
if (!doneone)
s->size += 4;
{
plt_offset = s->size;
s->size += 4;
}
ent->plt.offset = plt_offset;
s = htab->glink;
if (!info->shared
if (!doneone || info->shared || info->pie)
{
glink_offset = s->size;
s->size += GLINK_ENTRY_SIZE;
}
if (!doneone
&& !info->shared
&& !h->def_regular)
{
h->root.u.def.section = s;
h->root.u.def.value = s->size;
h->root.u.def.value = glink_offset;
}
ent->glink_offset = s->size;
s->size += GLINK_ENTRY_SIZE;
ent->glink_offset = glink_offset;
}
else
{
/* If this is the first .plt entry, make room for the
special first entry. */
if (s->size == 0)
s->size += PLT_INITIAL_ENTRY_SIZE;
/* The PowerPC PLT is actually composed of two parts, the
first part is 2 words (for a load and a jump), and then
there is a remaining word available at the end. */
ent->plt.offset = (PLT_INITIAL_ENTRY_SIZE
+ (PLT_SLOT_SIZE
* ((s->size - PLT_INITIAL_ENTRY_SIZE)
/ PLT_ENTRY_SIZE)));
/* If this symbol is not defined in a regular file, and we
are not generating a shared library, then set the symbol
to this location in the .plt. This is required to make
function pointers compare as equal between the normal
executable and the shared library. */
if (! info->shared
&& !h->def_regular)
{
h->root.u.def.section = s;
h->root.u.def.value = ent->plt.offset;
}
/* Make room for this entry. After the 8192nd entry, room
for two entries is allocated. */
if (!doneone)
{
/* If this is the first .plt entry, make room
for the special first entry. */
if (s->size == 0)
s->size += PLT_INITIAL_ENTRY_SIZE;
/* The PowerPC PLT is actually composed of two
parts, the first part is 2 words (for a load
and a jump), and then there is a remaining
word available at the end. */
plt_offset = (PLT_INITIAL_ENTRY_SIZE
+ (PLT_SLOT_SIZE
* ((s->size - PLT_INITIAL_ENTRY_SIZE)
/ PLT_ENTRY_SIZE)));
/* If this symbol is not defined in a regular
file, and we are not generating a shared
library, then set the symbol to this location
in the .plt. This is required to make
function pointers compare as equal between
the normal executable and the shared library. */
if (! info->shared
&& !h->def_regular)
{
h->root.u.def.section = s;
h->root.u.def.value = plt_offset;
}
/* Make room for this entry. After the 8192nd
entry, room for two entries is allocated. */
s->size += PLT_ENTRY_SIZE;
if ((s->size - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE
> PLT_NUM_SINGLE_ENTRIES)
s->size += PLT_ENTRY_SIZE;
}
ent->plt.offset = plt_offset;
}
/* We also need to make an entry in the .rela.plt section. */
@ -6508,6 +6521,9 @@ ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
p += 4;
bfd_put_32 (output_bfd, BCTR, p);
p += 4;
/* We only need one non-PIC glink stub. */
break;
}
}
else