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* elf32-ppc.c (ppc_elf_finish_dynamic_sections): Handle vxworks

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_GLOBAL_OFFSET_TABLE_ in .got.plt section.  Add BFD_ASSERTs.
This commit is contained in:
Alan Modra
2008-09-19 09:51:32 +00:00
parent 9a97a5d735
commit e79f59555a
2 changed files with 24 additions and 10 deletions
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5
bfd/ChangeLog
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@ -1,3 +1,8 @@
2008-09-19 Alan Modra <amodra@bigpond.net.au>
* elf32-ppc.c (ppc_elf_finish_dynamic_sections): Handle vxworks
_GLOBAL_OFFSET_TABLE_ in .got.plt section. Add BFD_ASSERTs.
2008-09-17 Bob Wilson <bob.wilson@acm.org> 2008-09-17 Bob Wilson <bob.wilson@acm.org>
* elf32-xtensa.c (elf_xtensa_check_relocs): Check for negative refcount. * elf32-xtensa.c (elf_xtensa_check_relocs): Check for negative refcount.

27
bfd/elf32-ppc.c
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@ -7727,29 +7727,38 @@ ppc_elf_finish_dynamic_sections (bfd *output_bfd,
} }
} }
/* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4 so that a function can
easily find the address of the _GLOBAL_OFFSET_TABLE_. */
if (htab->got != NULL) if (htab->got != NULL)
{ {
if (htab->elf.hgot->root.u.def.section == htab->got) if (htab->elf.hgot->root.u.def.section == htab->got
|| htab->elf.hgot->root.u.def.section == htab->sgotplt)
{ {
unsigned char *p = htab->got->contents; unsigned char *p = htab->elf.hgot->root.u.def.section->contents;
bfd_vma val;
p += htab->elf.hgot->root.u.def.value; p += htab->elf.hgot->root.u.def.value;
if (htab->plt_type == PLT_OLD) if (htab->plt_type == PLT_OLD)
bfd_put_32 (output_bfd, 0x4e800021 /* blrl */, p - 4); {
/* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4
so that a function can easily find the address of
_GLOBAL_OFFSET_TABLE_. */
BFD_ASSERT (htab->elf.hgot->root.u.def.value - 4
< htab->elf.hgot->root.u.def.section->size);
bfd_put_32 (output_bfd, 0x4e800021, p - 4);
}
val = 0;
if (sdyn != NULL) if (sdyn != NULL)
val = sdyn->output_section->vma + sdyn->output_offset; {
bfd_vma val = sdyn->output_section->vma + sdyn->output_offset;
BFD_ASSERT (htab->elf.hgot->root.u.def.value
< htab->elf.hgot->root.u.def.section->size);
bfd_put_32 (output_bfd, val, p); bfd_put_32 (output_bfd, val, p);
} }
}
else else
{ {
(*_bfd_error_handler) (_("%s not defined in linker created %s"), (*_bfd_error_handler) (_("%s not defined in linker created %s"),
htab->elf.hgot->root.root.string, htab->elf.hgot->root.root.string,
htab->got->name); (htab->sgotplt != NULL
? htab->sgotplt->name : htab->got->name));
bfd_set_error (bfd_error_bad_value); bfd_set_error (bfd_error_bad_value);
ret = FALSE; ret = FALSE;
} }