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* elf-bfd.h (struct elf_link_hash_table): Delete init_refcount and 

init_offset.  Add init_got_refcount, init_plt_refcount,
	init_got_offset and init_plt_offset.
	* elf.c (_bfd_elf_link_hash_newfunc): Adjust for above change.
	(_bfd_elf_link_hash_hide_symbol): Likewise.
	(_bfd_elf_link_hash_table_init): Likewise.
	* elf32-hppa.c (elf32_hppa_hide_symbol): Likewise.
	* elf64-ppc.c (ppc64_elf_link_hash_table_create): Likewise.
	* elflink.c (_bfd_elf_adjust_dynamic_symbol): Likewise.
	(bfd_elf_size_dynamic_sections): Likewise.
	* elf32-ppc.c (GLINK_PLTRESOLVE): Now 16 insns.
	(LWZU_0_X_12, LWZ_0_4_30, LWZ_0_X_12, LWZ_11_X_11, LWZ_11_X_30,
	LWZ_12_4_12, LWZ_12_8_30, LWZ_12_X_12, SUB_11_11_30): Delete.
	(ADDIS_12_12, BCL_20_31, LWZU_0_12, LWZ_0_12, LWZ_11_11, LWZ_11_30,
	LWZ_12_12, MFLR_0, MFLR_12, MTLR_0, SUB_11_11_12): Define.
	(struct plt_entry): New.
	(ppc_elf_link_hash_table_create): Set new init_plt fields.
	(ppc_elf_copy_indirect_symbol): Handle merge of plt plist.  Don't
	use _bfd_elf_link_hash_copy_indirect.
	(update_plt_info, find_plt_ent): New functions.
	(ppc_elf_check_relocs): Handle R_PPC_PLTREL24 with non-zero addend
	and adjust for use of plt list rather than refcount.
	(ppc_elf_gc_sweep_hook): Likewise.
	(ppc_elf_tls_optimize): Likewise.
	(ppc_elf_adjust_dynamic_symbol): Likewise.
	(allocate_dynrelocs): Likewise.
	(ppc_elf_relax_section): Likewise.
	(ppc_elf_relocate_section): Likewise.  Adjust R_PPC_PLTREL24 addends
	when performing a relocatable link.
	(ppc_elf_finish_dynamic_symbol): Likewise.  Write .glink stubs here..
	(ppc_elf_finish_dynamic_sections): ..rather than here.  Use new
	pic resolver stub.
This commit is contained in:
Alan Modra 2005-05-19 08:26:56 +00:00
parent b0648eec61
commit a6aa51957c
7 changed files with 660 additions and 315 deletions
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35
bfd/ChangeLog
View File

@ -1,3 +1,38 @@
2005-05-19 Alan Modra <amodra@bigpond.net.au>
* elf-bfd.h (struct elf_link_hash_table): Delete init_refcount and
init_offset. Add init_got_refcount, init_plt_refcount,
init_got_offset and init_plt_offset.
* elf.c (_bfd_elf_link_hash_newfunc): Adjust for above change.
(_bfd_elf_link_hash_hide_symbol): Likewise.
(_bfd_elf_link_hash_table_init): Likewise.
* elf32-hppa.c (elf32_hppa_hide_symbol): Likewise.
* elf64-ppc.c (ppc64_elf_link_hash_table_create): Likewise.
* elflink.c (_bfd_elf_adjust_dynamic_symbol): Likewise.
(bfd_elf_size_dynamic_sections): Likewise.
* elf32-ppc.c (GLINK_PLTRESOLVE): Now 16 insns.
(LWZU_0_X_12, LWZ_0_4_30, LWZ_0_X_12, LWZ_11_X_11, LWZ_11_X_30,
LWZ_12_4_12, LWZ_12_8_30, LWZ_12_X_12, SUB_11_11_30): Delete.
(ADDIS_12_12, BCL_20_31, LWZU_0_12, LWZ_0_12, LWZ_11_11, LWZ_11_30,
LWZ_12_12, MFLR_0, MFLR_12, MTLR_0, SUB_11_11_12): Define.
(struct plt_entry): New.
(ppc_elf_link_hash_table_create): Set new init_plt fields.
(ppc_elf_copy_indirect_symbol): Handle merge of plt plist. Don't
use _bfd_elf_link_hash_copy_indirect.
(update_plt_info, find_plt_ent): New functions.
(ppc_elf_check_relocs): Handle R_PPC_PLTREL24 with non-zero addend
and adjust for use of plt list rather than refcount.
(ppc_elf_gc_sweep_hook): Likewise.
(ppc_elf_tls_optimize): Likewise.
(ppc_elf_adjust_dynamic_symbol): Likewise.
(allocate_dynrelocs): Likewise.
(ppc_elf_relax_section): Likewise.
(ppc_elf_relocate_section): Likewise. Adjust R_PPC_PLTREL24 addends
when performing a relocatable link.
(ppc_elf_finish_dynamic_symbol): Likewise. Write .glink stubs here..
(ppc_elf_finish_dynamic_sections): ..rather than here. Use new
pic resolver stub.
2005-05-19 Alan Modra <amodra@bigpond.net.au>
* elf.c (assign_file_positions_for_segments): Use maximum of

10
bfd/elf-bfd.h
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@ -349,13 +349,15 @@ struct elf_link_hash_table
/* The value to use when initialising got.refcount/offset and
plt.refcount/offset in an elf_link_hash_entry. Set to zero when
the values are refcounts. Set to init_offset in
size_dynamic_sections when the values may be offsets. */
union gotplt_union init_refcount;
the values are refcounts. Set to init_got_offset/init_plt_offset
in size_dynamic_sections when the values may be offsets. */
union gotplt_union init_got_refcount;
union gotplt_union init_plt_refcount;
/* The value to use for got.refcount/offset and plt.refcount/offset
when the values may be offsets. Normally (bfd_vma) -1. */
union gotplt_union init_offset;
union gotplt_union init_got_offset;
union gotplt_union init_plt_offset;
/* The number of symbols found in the link which must be put into
the .dynsym section. */

15
bfd/elf.c
View File

@ -1414,7 +1414,8 @@ _bfd_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
/* Set local fields. */
ret->indx = -1;
ret->dynindx = -1;
ret->got = ret->plt = htab->init_refcount;
ret->got = htab->init_got_refcount;
ret->plt = htab->init_plt_refcount;
memset (&ret->size, 0, (sizeof (struct elf_link_hash_entry)
- offsetof (struct elf_link_hash_entry, size)));
/* Assume that we have been called by a non-ELF symbol reader.
@ -1487,7 +1488,7 @@ _bfd_elf_link_hash_hide_symbol (struct bfd_link_info *info,
struct elf_link_hash_entry *h,
bfd_boolean force_local)
{
h->plt = elf_hash_table (info)->init_offset;
h->plt = elf_hash_table (info)->init_plt_offset;
h->needs_plt = 0;
if (force_local)
{
@ -1512,14 +1513,14 @@ _bfd_elf_link_hash_table_init
const char *))
{
bfd_boolean ret;
int can_refcount = get_elf_backend_data (abfd)->can_refcount;
table->dynamic_sections_created = FALSE;
table->dynobj = NULL;
/* Make sure can_refcount is extended to the width and signedness of
init_refcount before we subtract one from it. */
table->init_refcount.refcount = get_elf_backend_data (abfd)->can_refcount;
table->init_refcount.refcount -= 1;
table->init_offset.offset = -(bfd_vma) 1;
table->init_got_refcount.refcount = can_refcount - 1;
table->init_plt_refcount.refcount = can_refcount - 1;
table->init_got_offset.offset = -(bfd_vma) 1;
table->init_plt_offset.offset = -(bfd_vma) 1;
/* The first dynamic symbol is a dummy. */
table->dynsymcount = 1;
table->dynstr = NULL;

2
bfd/elf32-hppa.c
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@ -1678,7 +1678,7 @@ elf32_hppa_hide_symbol (struct bfd_link_info *info,
if (! ((struct elf32_hppa_link_hash_entry *) h)->plabel)
{
h->needs_plt = 0;
h->plt = elf_hash_table (info)->init_refcount;
h->plt = elf_hash_table (info)->init_plt_refcount;
}
}

890
bfd/elf32-ppc.c
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File diff suppressed because it is too large Load Diff

12
bfd/elf64-ppc.c
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@ -3520,10 +3520,14 @@ ppc64_elf_link_hash_table_create (bfd *abfd)
only care about glist, but when compiled on a 32-bit host the
bfd_vma fields are larger. Setting the bfd_vma to zero makes
debugger inspection of these fields look nicer. */
htab->elf.init_refcount.refcount = 0;
htab->elf.init_refcount.glist = NULL;
htab->elf.init_offset.offset = 0;
htab->elf.init_offset.glist = NULL;
htab->elf.init_got_refcount.refcount = 0;
htab->elf.init_got_refcount.glist = NULL;
htab->elf.init_plt_refcount.refcount = 0;
htab->elf.init_plt_refcount.glist = NULL;
htab->elf.init_got_offset.offset = 0;
htab->elf.init_got_offset.glist = NULL;
htab->elf.init_plt_offset.offset = 0;
htab->elf.init_plt_offset.glist = NULL;
return &htab->elf.root;
}

11
bfd/elflink.c
View File

@ -2362,8 +2362,8 @@ _bfd_elf_adjust_dynamic_symbol (struct elf_link_hash_entry *h, void *data)
if (h->root.type == bfd_link_hash_warning)
{
h->plt = elf_hash_table (eif->info)->init_offset;
h->got = elf_hash_table (eif->info)->init_offset;
h->got = elf_hash_table (eif->info)->init_got_offset;
h->plt = elf_hash_table (eif->info)->init_plt_offset;
/* When warning symbols are created, they **replace** the "real"
entry in the hash table, thus we never get to see the real
@ -2392,7 +2392,7 @@ _bfd_elf_adjust_dynamic_symbol (struct elf_link_hash_entry *h, void *data)
|| (!h->ref_regular
&& (h->u.weakdef == NULL || h->u.weakdef->dynindx == -1))))
{
h->plt = elf_hash_table (eif->info)->init_offset;
h->plt = elf_hash_table (eif->info)->init_plt_offset;
return TRUE;
}
@ -4986,7 +4986,10 @@ bfd_elf_size_dynamic_sections (bfd *output_bfd,
/* Any syms created from now on start with -1 in
got.refcount/offset and plt.refcount/offset. */
elf_hash_table (info)->init_refcount = elf_hash_table (info)->init_offset;
elf_hash_table (info)->init_got_refcount
= elf_hash_table (info)->init_got_offset;
elf_hash_table (info)->init_plt_refcount
= elf_hash_table (info)->init_plt_offset;
/* The backend may have to create some sections regardless of whether
we're dynamic or not. */