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* elf32-ppc.c (ppc_elf_select_plt_layout): Force bss-plt when 

shared and call to _mcount will go via plt.
This commit is contained in:
Alan Modra 2011-08-14 09:17:17 +00:00
parent 8de848d897
commit b3874e1a22
2 changed files with 31 additions and 1 deletions
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5
bfd/ChangeLog
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@ -1,3 +1,8 @@
2011-08-14 Alan Modra <amodra@gmail.com>
* elf32-ppc.c (ppc_elf_select_plt_layout): Force bss-plt when
shared and call to _mcount will go via plt.
2011-08-14 Alan Modra <amodra@gmail.com>
* elf64-ppc.c: Prefix all einfo error strings with "%P: ".

27
bfd/elf32-ppc.c
View File

@ -4256,8 +4256,27 @@ ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
if (htab->plt_type == PLT_UNSET)
{
struct elf_link_hash_entry *h;
if (plt_style == PLT_OLD)
htab->plt_type = PLT_OLD;
else if (info->shared
&& htab->elf.dynamic_sections_created
&& (h = elf_link_hash_lookup (&htab->elf, "_mcount",
FALSE, FALSE, TRUE)) != NULL
&& (h->type == STT_FUNC
|| h->needs_plt)
&& h->ref_regular
&& !(SYMBOL_CALLS_LOCAL (info, h)
|| (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
&& h->root.type == bfd_link_hash_undefweak)))
{
/* Profiling of shared libs (and pies) is not supported with
secure plt, because ppc32 does profiling before a
function prologue and a secure plt pic call stubs needs
r30 to be set up. */
htab->plt_type = PLT_OLD;
}
else
{
bfd *ibfd;
@ -4285,7 +4304,13 @@ ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
}
}
if (htab->plt_type == PLT_OLD && plt_style == PLT_NEW)
info->callbacks->einfo (_("%P: bss-plt forced due to %B\n"), htab->old_bfd);
{
if (htab->old_bfd != NULL)
info->callbacks->einfo (_("%P: bss-plt forced due to %B\n"),
htab->old_bfd);
else
info->callbacks->einfo (_("%P: bss-plt forced by profiling\n"));
}
BFD_ASSERT (htab->plt_type != PLT_VXWORKS);