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bfd/

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2005-05-04  H.J. Lu  <hongjiu.lu@intel.com>

	* bfd-in.h (_bfd_elf_provide_section_bound_symbols): New.
	* bfd-in2.h: Regenerated.

	* elflink.c (bfd_elf_set_symbol): New.
	(_bfd_elf_provide_symbol): Call it.
	(_bfd_elf_provide_section_bound_symbols): New.

ld/

2005-05-04  H.J. Lu  <hongjiu.lu@intel.com>

	* emultempl/elf32.em (gld${EMULATION_NAME}_provide_bound_symbols):
	Call _bfd_elf_provide_section_bound_symbols.
This commit is contained in:
H.J. Lu 2005-05-04 13:19:02 +00:00
parent c5e2ceadb7
commit f652615e8c
6 changed files with 91 additions and 38 deletions
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9
bfd/ChangeLog
View File

@ -1,3 +1,12 @@
2005-05-04 H.J. Lu <hongjiu.lu@intel.com>
* bfd-in.h (_bfd_elf_provide_section_bound_symbols): New.
* bfd-in2.h: Regenerated.
* elflink.c (bfd_elf_set_symbol): New.
(_bfd_elf_provide_symbol): Call it.
(_bfd_elf_provide_section_bound_symbols): New.
2005-05-04 H.J. Lu <hongjiu.lu@intel.com>
* elflink.c (_bfd_elf_merge_symbol): Only skip weak definitions

3
bfd/bfd-in.h
View File

@ -700,6 +700,9 @@ extern struct bfd_section *_bfd_elf_tls_setup
extern void _bfd_elf_provide_symbol
(struct bfd_link_info *, const char *, bfd_vma);
extern void _bfd_elf_provide_section_bound_symbols
(struct bfd_link_info *, struct bfd_section *sec, const char *, const char *);
extern bfd_boolean bfd_m68k_elf32_create_embedded_relocs
(bfd *, struct bfd_link_info *, struct bfd_section *, struct bfd_section *, char **);

3
bfd/bfd-in2.h
View File

@ -707,6 +707,9 @@ extern struct bfd_section *_bfd_elf_tls_setup
extern void _bfd_elf_provide_symbol
(struct bfd_link_info *, const char *, bfd_vma);
extern void _bfd_elf_provide_section_bound_symbols
(struct bfd_link_info *, struct bfd_section *sec, const char *, const char *);
extern bfd_boolean bfd_m68k_elf32_create_embedded_relocs
(bfd *, struct bfd_link_info *, struct bfd_section *, struct bfd_section *, char **);

78
bfd/elflink.c
View File

@ -9824,6 +9824,18 @@ _bfd_elf_section_already_linked (bfd *abfd, struct bfd_section * sec)
bfd_section_already_linked_table_insert (already_linked_list, sec);
}
static void
bfd_elf_set_symbol (struct elf_link_hash_entry *h, bfd_vma val)
{
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 | (h->other & ~ ELF_ST_VISIBILITY (-1));
h->forced_local = 1;
}
/* Set NAME to VAL if the symbol exists and is undefined. */
void
@ -9836,13 +9848,61 @@ _bfd_elf_provide_symbol (struct bfd_link_info *info, const char *name,
FALSE);
if (h != NULL && (h->root.type == bfd_link_hash_undefined
|| h->root.type == bfd_link_hash_undefweak))
{
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 | (h->other & ~ ELF_ST_VISIBILITY (-1));
h->forced_local = 1;
}
bfd_elf_set_symbol (h, val);
}
/* Set START and END to boundaries of SEC if they exist and are
undefined. */
void
_bfd_elf_provide_section_bound_symbols (struct bfd_link_info *info,
asection *sec,
const char *start,
const char *end)
{
struct elf_link_hash_entry *hs, *he;
bfd_vma start_val, end_val;
bfd_boolean do_start, do_end;
/* Check if we need them or not first. */
hs = elf_link_hash_lookup (elf_hash_table (info), start, FALSE,
FALSE, FALSE);
do_start = (hs != NULL
&& (hs->root.type == bfd_link_hash_undefined
|| hs->root.type == bfd_link_hash_undefweak));
he = elf_link_hash_lookup (elf_hash_table (info), end, FALSE,
FALSE, FALSE);
do_end = (he != NULL
&& (he->root.type == bfd_link_hash_undefined
|| he->root.type == bfd_link_hash_undefweak));
if (!do_start && !do_end)
return;
if (sec != NULL)
{
start_val = sec->vma;
end_val = start_val + sec->size;
}
else
{
/* We have to choose those values very carefully. Some targets,
like alpha, may have relocation overflow with 0. "_edata"
should be defined in all cases. */
struct elf_link_hash_entry *h
= elf_link_hash_lookup (elf_hash_table (info), "_edata",
FALSE, FALSE, FALSE);
if (h != NULL && h->root.type == bfd_link_hash_defined)
start_val = h->root.u.def.value;
else
start_val = 0;
end_val = start_val;
}
if (do_start)
bfd_elf_set_symbol (hs, start_val);
if (do_end)
bfd_elf_set_symbol (he, end_val);
}

5
ld/ChangeLog
View File

@ -1,3 +1,8 @@
2005-05-04 H.J. Lu <hongjiu.lu@intel.com>
* emultempl/elf32.em (gld${EMULATION_NAME}_provide_bound_symbols):
Call _bfd_elf_provide_section_bound_symbols.
2005-05-04 Alan Modra <amodra@bigpond.net.au>
* ldemul.c: Include bfdlink.h.

31
ld/emultempl/elf32.em
View File

@ -1453,35 +1453,8 @@ gld${EMULATION_NAME}_provide_bound_symbols (const char *sec,
const char *start,
const char *end)
{
asection *s;
bfd_vma start_val, end_val;
s = bfd_get_section_by_name (output_bfd, sec);
if (s != NULL)
{
start_val = s->vma;
end_val = start_val + s->size;
}
else
{
/* We have to choose those values very carefully. Some targets,
like alpha, may have relocation overflow with 0. We use the
first SEC_ALLOC section which isn't SEC_READONLY or the last
SEC_ALLOC section. */
start_val = 0;
for (s = output_bfd->sections; s != NULL; s = s->next)
{
if ((s->flags & SEC_ALLOC) != 0)
{
start_val = s->vma;
if ((s->flags & SEC_READONLY) == 0)
break;
}
}
end_val = start_val;
}
_bfd_elf_provide_symbol (&link_info, start, start_val);
_bfd_elf_provide_symbol (&link_info, end, end_val);
asection *s = bfd_get_section_by_name (output_bfd, sec);
_bfd_elf_provide_section_bound_symbols (&link_info, s, start, end);
}
/* If not building a shared library, provide