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* elf64-ppc.c (ppc64_elf_next_input_section): Use elf_gp value

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for toc pointer on any section having makes_toc_func_call set.
	(check_pasted_section): Ensure pasted .init/.fini fragments use
	the same toc if any has makes_toc_func_call set.
This commit is contained in:
Alan Modra
2011-01-31 22:38:26 +00:00
parent d3f0f85341
commit 6683a28dfa
2 changed files with 35 additions and 5 deletions
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7
bfd/ChangeLog
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@ -1,3 +1,10 @@
2011-02-01 Alan Modra <amodra@gmail.com>
* elf64-ppc.c (ppc64_elf_next_input_section): Use elf_gp value
for toc pointer on any section having makes_toc_func_call set.
(check_pasted_section): Ensure pasted .init/.fini fragments use
the same toc if any has makes_toc_func_call set.
2011-01-28 Joseph Myers <joseph@codesourcery.com> 2011-01-28 Joseph Myers <joseph@codesourcery.com>
* elf32-ppc.c (ppc_elf_link_hash_newfunc): Initialize has_sda_refs * elf32-ppc.c (ppc_elf_link_hash_newfunc): Initialize has_sda_refs

33
bfd/elf64-ppc.c
View File

@ -10580,14 +10580,28 @@ ppc64_elf_next_input_section (struct bfd_link_info *info, asection *isec)
if (elf_gp (isec->owner) != 0) if (elf_gp (isec->owner) != 0)
htab->toc_curr = elf_gp (isec->owner); htab->toc_curr = elf_gp (isec->owner);
} }
else if (!isec->call_check_done else
&& toc_adjusting_stub_needed (info, isec) < 0) {
return FALSE; if (!isec->call_check_done
&& toc_adjusting_stub_needed (info, isec) < 0)
return FALSE;
/* If we make a local call from this section, ie. a branch
without a following nop, then we have no place to put a
toc restoring insn. We must use the same toc group as
the callee.
Testing makes_toc_func_call actually tests for *any*
calls to functions that need a good toc pointer. A more
precise test would be better, as this one will set
incorrect values for pasted .init/.fini fragments.
(Fixed later in check_pasted_section.) */
if (isec->makes_toc_func_call
&& elf_gp (isec->owner) != 0)
htab->toc_curr = elf_gp (isec->owner);
}
} }
/* Functions that don't use the TOC can belong in any TOC group. /* Functions that don't use the TOC can belong in any TOC group.
Use the last TOC base. This happens to make _init and _fini Use the last TOC base. */
pasting work, because the fragments generally don't use the TOC. */
htab->stub_group[isec->id].toc_off = htab->toc_curr; htab->stub_group[isec->id].toc_off = htab->toc_curr;
return TRUE; return TRUE;
} }
@ -10614,6 +10628,15 @@ check_pasted_section (struct bfd_link_info *info, const char *name)
else if (toc_off != htab->stub_group[i->id].toc_off) else if (toc_off != htab->stub_group[i->id].toc_off)
return FALSE; return FALSE;
} }
if (toc_off == 0)
for (i = o->map_head.s; i != NULL; i = i->map_head.s)
if (i->makes_toc_func_call)
{
toc_off = htab->stub_group[i->id].toc_off;
break;
}
/* Make sure the whole pasted function uses the same toc offset. */ /* Make sure the whole pasted function uses the same toc offset. */
if (toc_off != 0) if (toc_off != 0)
for (i = o->map_head.s; i != NULL; i = i->map_head.s) for (i = o->map_head.s; i != NULL; i = i->map_head.s)