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* elf32-ppc.c (ppc_elf_set_sdata_syms): New function, extracted from..

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(ppc_elf_set_sdata_syms): ..here.  Expand comment.  Set .sbss start
	and end syms.
This commit is contained in:
Alan Modra 2005-03-22 03:23:51 +00:00
parent 479759c861
commit f85f57adbc
2 changed files with 46 additions and 15 deletions
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6
bfd/ChangeLog
View File

@ -1,3 +1,9 @@
2005-03-22 Alan Modra <amodra@bigpond.net.au>
* elf32-ppc.c (ppc_elf_set_sdata_syms): New function, extracted from..
(ppc_elf_set_sdata_syms): ..here. Expand comment. Set .sbss start
and end syms.
2005-03-21 Nick Clifton <nickc@redhat.com>
* coff-arm.c (coff_link_hash_entry): Only define for non WINCE

55
bfd/elf32-ppc.c
View File

@ -4570,22 +4570,46 @@ ppc_elf_relax_section (bfd *abfd,
return FALSE;
}
/* Set _SDA_BASE_ and _SDA2_BASE. */
/* Set SYM_NAME to VAL if the symbol exists and is undefined. */
static void
set_linker_sym (struct ppc_elf_link_hash_table *htab,
const char *sym_name,
bfd_vma val)
{
struct elf_link_hash_entry *h;
h = elf_link_hash_lookup (&htab->elf, sym_name, FALSE, FALSE, FALSE);
if (h != NULL && h->root.type == bfd_link_hash_undefined)
{
h->root.type = bfd_link_hash_defined;
h->root.u.def.section = bfd_abs_section_ptr;
h->root.u.def.value = val;
h->def_regular = 1;
h->type = STT_OBJECT;
h->other = STV_HIDDEN;
}
}
/* Set _SDA_BASE_, _SDA2_BASE, and sbss start and end syms. They are
set here rather than via PROVIDE in the default linker script,
because using PROVIDE inside an output section statement results in
unnecessary output sections. Using PROVIDE outside an output section
statement runs the risk of section alignment affecting where the
section starts. */
bfd_boolean
ppc_elf_set_sdata_syms (bfd *obfd, struct bfd_link_info *info)
{
struct ppc_elf_link_hash_table *htab;
unsigned i;
asection *s;
bfd_vma val;
htab = ppc_elf_hash_table (info);
for (i = 0; i < 2; i++)
{
elf_linker_section_t *lsect = &htab->sdata[i];
asection *s;
bfd_vma val;
struct elf_link_hash_entry *h;
s = lsect->section;
if (s != NULL)
@ -4600,18 +4624,19 @@ ppc_elf_set_sdata_syms (bfd *obfd, struct bfd_link_info *info)
val = s->vma + 32768;
lsect->sym_val = val;
h = elf_link_hash_lookup (&htab->elf, lsect->sym_name,
FALSE, FALSE, FALSE);
if (h != NULL && h->root.type == bfd_link_hash_undefined)
{
h->root.type = bfd_link_hash_defined;
h->root.u.def.section = bfd_abs_section_ptr;
h->root.u.def.value = val;
h->def_regular = 1;
h->type = STT_OBJECT;
h->other = STV_HIDDEN;
}
set_linker_sym (htab, lsect->sym_name, val);
}
s = bfd_get_section_by_name (obfd, ".sbss");
val = 0;
if (s != NULL)
val = s->vma;
set_linker_sym (htab, "__sbss_start", val);
set_linker_sym (htab, "___sbss_start", val);
if (s != NULL)
val += s->size;
set_linker_sym (htab, "__sbss_end", val);
set_linker_sym (htab, "___sbss_end", val);
return TRUE;
}