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* elf32-ppc.c (ppc_elf_check_relocs): For old gcc -fPIC code

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force old plt layout.
This commit is contained in:
Alan Modra 2005-05-23 16:22:25 +00:00
parent 41a865baa2
commit 9edfd1af33
2 changed files with 27 additions and 4 deletions
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5
bfd/ChangeLog
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@ -1,3 +1,8 @@
2005-05-24 Alan Modra <amodra@bigpond.net.au>
* elf32-ppc.c (ppc_elf_check_relocs): For old gcc -fPIC code
force old plt layout.
2005-05-22 Richard Henderson <rth@redhat.com> 2005-05-22 Richard Henderson <rth@redhat.com>
* elf64-alpha.c (elf64_alpha_relax_section): Ignore non-allocated * elf64-alpha.c (elf64_alpha_relax_section): Ignore non-allocated

26
bfd/elf32-ppc.c
View file

@ -3160,14 +3160,32 @@ ppc_elf_check_relocs (bfd *abfd,
info->flags |= DF_STATIC_TLS; info->flags |= DF_STATIC_TLS;
goto dodyn; goto dodyn;
/* When creating a shared object, we must copy these case R_PPC_REL32:
relocs into the output file. We create a reloc if (h == NULL
section in dynobj and make room for the reloc. */ && got2 != NULL
&& (sec->flags & SEC_CODE) != 0
&& (info->shared || info->pie)
&& !htab->old_plt)
{
/* Old -fPIC gcc code has .long LCTOC1-LCFx just before
the start of a function, which assembles to a REL32
reference to .got2. If we detect one of these, then
force the old PLT layout because the linker cannot
reliably deduce the GOT pointer value needed for
PLT call stubs. */
asection *s;
s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, sec,
r_symndx);
if (s == got2)
htab->old_plt = 1;
}
/* fall through */
case R_PPC_REL24: case R_PPC_REL24:
case R_PPC_REL14: case R_PPC_REL14:
case R_PPC_REL14_BRTAKEN: case R_PPC_REL14_BRTAKEN:
case R_PPC_REL14_BRNTAKEN: case R_PPC_REL14_BRNTAKEN:
case R_PPC_REL32:
if (h == NULL) if (h == NULL)
break; break;
if (h == htab->elf.hgot) if (h == htab->elf.hgot)