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PR ld/14158

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* elf64-ppc.c (ppc64_elf_size_stubs): Round up glink_eh_frame
	size to output section alignment.
	(ppc64_elf_build_stubs): Likewise, and extend last FDE to cover.
This commit is contained in:
Alan Modra
2012-05-24 06:20:52 +00:00
parent d50bd42bda
commit 4bbe044a20
2 changed files with 31 additions and 3 deletions
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7
bfd/ChangeLog
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@ -1,3 +1,10 @@
2012-05-24 Alan Modra <amodra@gmail.com>
PR ld/14158
* elf64-ppc.c (ppc64_elf_size_stubs): Round up glink_eh_frame
size to output section alignment.
(ppc64_elf_build_stubs): Likewise, and extend last FDE to cover.
2012-05-23 Alan Modra <amodra@gmail.com> 2012-05-23 Alan Modra <amodra@gmail.com>
* elf-eh-frame.c (_bfd_elf_maybe_strip_eh_frame_hdr): Handle * elf-eh-frame.c (_bfd_elf_maybe_strip_eh_frame_hdr): Handle

27
bfd/elf64-ppc.c
View File

@ -11664,7 +11664,7 @@ ppc64_elf_size_stubs (struct bfd_link_info *info, bfd_signed_vma group_size,
&& !bfd_is_abs_section (htab->glink_eh_frame->output_section) && !bfd_is_abs_section (htab->glink_eh_frame->output_section)
&& (htab->glink_eh_frame->flags & SEC_EXCLUDE) == 0) && (htab->glink_eh_frame->flags & SEC_EXCLUDE) == 0)
{ {
bfd_size_type size = 0; size_t size = 0, align;
for (stub_sec = htab->stub_bfd->sections; for (stub_sec = htab->stub_bfd->sections;
stub_sec != NULL; stub_sec != NULL;
@ -11675,6 +11675,10 @@ ppc64_elf_size_stubs (struct bfd_link_info *info, bfd_signed_vma group_size,
size += 24; size += 24;
if (size != 0) if (size != 0)
size += sizeof (glink_eh_frame_cie); size += sizeof (glink_eh_frame_cie);
align = 1;
align <<= htab->glink_eh_frame->output_section->alignment_power;
align -= 1;
size = (size + align) & ~align;
htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size; htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size;
htab->glink_eh_frame->size = size; htab->glink_eh_frame->size = size;
} }
@ -11916,17 +11920,21 @@ ppc64_elf_build_stubs (bfd_boolean emit_stub_syms,
&& htab->glink_eh_frame->size != 0) && htab->glink_eh_frame->size != 0)
{ {
bfd_vma val; bfd_vma val;
bfd_byte *last_fde;
size_t last_fde_len, size, align, pad;
p = bfd_zalloc (htab->glink_eh_frame->owner, htab->glink_eh_frame->size); p = bfd_zalloc (htab->glink_eh_frame->owner, htab->glink_eh_frame->size);
if (p == NULL) if (p == NULL)
return FALSE; return FALSE;
htab->glink_eh_frame->contents = p; htab->glink_eh_frame->contents = p;
last_fde = p;
htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size; htab->glink_eh_frame->rawsize = htab->glink_eh_frame->size;
memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie)); memcpy (p, glink_eh_frame_cie, sizeof (glink_eh_frame_cie));
/* CIE length (rewrite in case little-endian). */ /* CIE length (rewrite in case little-endian). */
bfd_put_32 (htab->elf.dynobj, sizeof (glink_eh_frame_cie) - 4, p); last_fde_len = sizeof (glink_eh_frame_cie) - 4;
bfd_put_32 (htab->elf.dynobj, last_fde_len, p);
p += sizeof (glink_eh_frame_cie); p += sizeof (glink_eh_frame_cie);
for (stub_sec = htab->stub_bfd->sections; for (stub_sec = htab->stub_bfd->sections;
@ -11934,6 +11942,8 @@ ppc64_elf_build_stubs (bfd_boolean emit_stub_syms,
stub_sec = stub_sec->next) stub_sec = stub_sec->next)
if ((stub_sec->flags & SEC_LINKER_CREATED) == 0) if ((stub_sec->flags & SEC_LINKER_CREATED) == 0)
{ {
last_fde = p;
last_fde_len = 16;
/* FDE length. */ /* FDE length. */
bfd_put_32 (htab->elf.dynobj, 16, p); bfd_put_32 (htab->elf.dynobj, 16, p);
p += 4; p += 4;
@ -11966,6 +11976,8 @@ ppc64_elf_build_stubs (bfd_boolean emit_stub_syms,
} }
if (htab->glink != NULL && htab->glink->size != 0) if (htab->glink != NULL && htab->glink->size != 0)
{ {
last_fde = p;
last_fde_len = 20;
/* FDE length. */ /* FDE length. */
bfd_put_32 (htab->elf.dynobj, 20, p); bfd_put_32 (htab->elf.dynobj, 20, p);
p += 4; p += 4;
@ -12003,7 +12015,16 @@ ppc64_elf_build_stubs (bfd_boolean emit_stub_syms,
*p++ = DW_CFA_restore_extended; *p++ = DW_CFA_restore_extended;
*p++ = 65; *p++ = 65;
} }
htab->glink_eh_frame->size = p - htab->glink_eh_frame->contents; /* Subsume any padding into the last FDE if user .eh_frame
sections are aligned more than glink_eh_frame. Otherwise any
zero padding will be seen as a terminator. */
size = p - htab->glink_eh_frame->contents;
align = 1;
align <<= htab->glink_eh_frame->output_section->alignment_power;
align -= 1;
pad = ((size + align) & ~align) - size;
htab->glink_eh_frame->size = size + pad;
bfd_put_32 (htab->elf.dynobj, last_fde_len + pad, last_fde);
} }
/* Build the stubs as directed by the stub hash table. */ /* Build the stubs as directed by the stub hash table. */