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Tue Jul 14 11:22:21 1998 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>

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* elf32-m68k.c (elf_m68k_check_relocs): Also reference count
	R_68K_PCxx and R_68K_xx relocations.  Make sure that
	ELF_LINK_HASH_NEEDS_PLT is always set for a PLT reloc reference.
	(elf_m68k_gc_sweep_hook): Also reference count R_68K_PCxx and
	R_68K_xx relocations.
	(elf_m68k_adjust_dynamic_symbol): Reset the plt offset of a symbol
	that has no plt entry.
	(elf_m68k_relocate_section): Ignore the plt offset in a static
	link.
	* elflink.h (elf_adjust_dynamic_symbol): Reset the plt offset for
	an ignored symbol.
	(elf_gc_common_finalize_got_offsets): Set the got offsets also in
	a static link.

	* elf32-m68k.c (R_68K_GNU_VTINHERIT, R_68K_GNU_VTENTRY): New reloc
	types.
	(howto_table, reloc_map): Add entries for them.
	(elf_m68k_check_relocs): Handle them.  Implement reference
	counting for got and plt entries.
	(elf_m68k_gc_mark_hook, elf_m68k_gc_sweep_hook): New functions.
	(elf_m68k_adjust_dynamic_symbol): Handle unreferenced plt
	symbols.
	(rtype_to_howto_rel, elf_info_to_howto_rel): Delete.
	(elf_m68k_relocate_section): Handle the new reloc types.
	(bfd_elf32_bfd_final_link, elf_backend_gc_mark_hook,
	elf_backend_gc_sweep_hook, elf_backend_can_gc_sections): Define.
	* elflink.h (elf_link_add_object_symbols): When creating an
	indirect reference for symbol versioning also copy the plt
	offset.
	(elf_fix_symbol_flags): When clearing the ELF_LINK_HASH_NEEDS_PLT
	flag also reset the plt offset.
	(elf_link_assign_sym_version): Likewise.
	(elf_gc_common_finalize_got_offsets): Increment the got offset by
	the size of the entry in bytes.
	(elf_gc_allocate_got_offsets): Likewise.

Tue Jul 14 11:18:14 1998  Ian Lance Taylor  <ian@cygnus.com>

	* elflink.h (elf_gc_sections): Return true rather than falling off
	the bottom.
This commit is contained in:
Ian Lance Taylor 1998-07-14 15:45:55 +00:00
parent bb51198f7a
commit be228e0db6
2 changed files with 111 additions and 35 deletions
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41
bfd/ChangeLog
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@ -1,5 +1,46 @@
Tue Jul 14 11:22:21 1998 Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>
* elf32-m68k.c (elf_m68k_check_relocs): Also reference count
R_68K_PCxx and R_68K_xx relocations. Make sure that
ELF_LINK_HASH_NEEDS_PLT is always set for a PLT reloc reference.
(elf_m68k_gc_sweep_hook): Also reference count R_68K_PCxx and
R_68K_xx relocations.
(elf_m68k_adjust_dynamic_symbol): Reset the plt offset of a symbol
that has no plt entry.
(elf_m68k_relocate_section): Ignore the plt offset in a static
link.
* elflink.h (elf_adjust_dynamic_symbol): Reset the plt offset for
an ignored symbol.
(elf_gc_common_finalize_got_offsets): Set the got offsets also in
a static link.
* elf32-m68k.c (R_68K_GNU_VTINHERIT, R_68K_GNU_VTENTRY): New reloc
types.
(howto_table, reloc_map): Add entries for them.
(elf_m68k_check_relocs): Handle them. Implement reference
counting for got and plt entries.
(elf_m68k_gc_mark_hook, elf_m68k_gc_sweep_hook): New functions.
(elf_m68k_adjust_dynamic_symbol): Handle unreferenced plt
symbols.
(rtype_to_howto_rel, elf_info_to_howto_rel): Delete.
(elf_m68k_relocate_section): Handle the new reloc types.
(bfd_elf32_bfd_final_link, elf_backend_gc_mark_hook,
elf_backend_gc_sweep_hook, elf_backend_can_gc_sections): Define.
* elflink.h (elf_link_add_object_symbols): When creating an
indirect reference for symbol versioning also copy the plt
offset.
(elf_fix_symbol_flags): When clearing the ELF_LINK_HASH_NEEDS_PLT
flag also reset the plt offset.
(elf_link_assign_sym_version): Likewise.
(elf_gc_common_finalize_got_offsets): Increment the got offset by
the size of the entry in bytes.
(elf_gc_allocate_got_offsets): Likewise.
Tue Jul 14 11:18:14 1998 Ian Lance Taylor <ian@cygnus.com>
* elflink.h (elf_gc_sections): Return true rather than falling off
the bottom.
* coffgen.c (bfd_coff_set_symbol_class): Call bfd_alloc, not
xmalloc.

105
bfd/elflink.h
View File

@ -1456,9 +1456,9 @@ elf_link_add_object_symbols (abfd, info)
& (ELF_LINK_HASH_REF_DYNAMIC
| ELF_LINK_HASH_REF_REGULAR));
/* Copy over the global table offset entry.
This may have been already set up by a
check_relocs routine. */
/* Copy over the global and procedure linkage table
offset entries. These may have been already set
up by a check_relocs routine. */
if (ht->got.offset == (bfd_vma) -1)
{
ht->got.offset = hi->got.offset;
@ -1466,6 +1466,13 @@ elf_link_add_object_symbols (abfd, info)
}
BFD_ASSERT (hi->got.offset == (bfd_vma) -1);
if (ht->plt.offset == (bfd_vma) -1)
{
ht->plt.offset = hi->plt.offset;
hi->plt.offset = (bfd_vma) -1;
}
BFD_ASSERT (hi->plt.offset == (bfd_vma) -1);
if (ht->dynindx == -1)
{
ht->dynindx = hi->dynindx;
@ -1557,9 +1564,9 @@ elf_link_add_object_symbols (abfd, info)
& (ELF_LINK_HASH_REF_DYNAMIC
| ELF_LINK_HASH_REF_REGULAR));
/* Copy over the global table offset entry.
This may have been already set up by a
check_relocs routine. */
/* Copy over the global and procedure linkage
table offset entries. These may have been
already set up by a check_relocs routine. */
if (h->got.offset == (bfd_vma) -1)
{
h->got.offset = hi->got.offset;
@ -1567,6 +1574,13 @@ elf_link_add_object_symbols (abfd, info)
}
BFD_ASSERT (hi->got.offset == (bfd_vma) -1);
if (h->plt.offset == (bfd_vma) -1)
{
h->plt.offset = hi->plt.offset;
hi->plt.offset = (bfd_vma) -1;
}
BFD_ASSERT (hi->got.offset == (bfd_vma) -1);
if (h->dynindx == -1)
{
h->dynindx = hi->dynindx;
@ -2839,7 +2853,10 @@ elf_fix_symbol_flags (h, eif)
&& eif->info->shared
&& eif->info->symbolic
&& (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0)
h->elf_link_hash_flags &=~ ELF_LINK_HASH_NEEDS_PLT;
{
h->elf_link_hash_flags &=~ ELF_LINK_HASH_NEEDS_PLT;
h->plt.offset = (bfd_vma) -1;
}
return true;
}
@ -2877,7 +2894,10 @@ elf_adjust_dynamic_symbol (h, data)
|| (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) == 0
|| ((h->elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR) == 0
&& (h->weakdef == NULL || h->weakdef->dynindx == -1))))
return true;
{
h->plt.offset = (bfd_vma) -1;
return true;
}
/* If we've already adjusted this symbol, don't do it again. This
can happen via a recursive call. */
@ -3162,6 +3182,7 @@ elf_link_assign_sym_version (h, data)
h->elf_link_hash_flags &=~
ELF_LINK_HASH_NEEDS_PLT;
h->dynindx = -1;
h->plt.offset = (bfd_vma) -1;
/* FIXME: The name of the symbol has
already been recorded in the dynamic
string table section. */
@ -3276,6 +3297,7 @@ elf_link_assign_sym_version (h, data)
h->elf_link_hash_flags |= ELF_LINK_FORCED_LOCAL;
h->elf_link_hash_flags &=~ ELF_LINK_HASH_NEEDS_PLT;
h->dynindx = -1;
h->plt.offset = (bfd_vma) -1;
/* FIXME: The name of the symbol has already
been recorded in the dynamic string table
section. */
@ -3300,6 +3322,7 @@ elf_link_assign_sym_version (h, data)
h->elf_link_hash_flags |= ELF_LINK_FORCED_LOCAL;
h->elf_link_hash_flags &=~ ELF_LINK_HASH_NEEDS_PLT;
h->dynindx = -1;
h->plt.offset = (bfd_vma) -1;
/* FIXME: The name of the symbol has already been
recorded in the dynamic string table section. */
}
@ -5518,6 +5541,8 @@ elf_gc_sweep (info, gc_sweep_hook)
elf_hash_table (info)->dynsymcount = i;
}
return true;
}
/* Sweep symbols in swept sections. Called via elf_link_hash_traverse. */
@ -5777,39 +5802,43 @@ elf_gc_common_finalize_got_offsets (abfd, info)
bfd *abfd;
struct bfd_link_info *info;
{
if (elf_hash_table (info)->dynamic_sections_created)
bfd *i;
bfd_vma off[2], gotoff = 0;
/* Do the local .got entries first. */
for (i = info->input_bfds; i; i = i->link_next)
{
bfd *i;
bfd_vma off[2], gotoff = 0;
bfd_signed_vma *local_got = elf_local_got_refcounts (i);
bfd_size_type j, locsymcount;
Elf_Internal_Shdr *symtab_hdr;
/* Do the local .got entries first. */
for (i = info->input_bfds; i; i = i->link_next)
if (!local_got)
continue;
symtab_hdr = &elf_tdata (i)->symtab_hdr;
if (elf_bad_symtab (i))
locsymcount = symtab_hdr->sh_size / sizeof (Elf_External_Sym);
else
locsymcount = symtab_hdr->sh_info;
for (j = 0; j < locsymcount; ++j)
{
bfd_signed_vma *local_got = elf_local_got_refcounts (i);
bfd_size_type j, locsymcount;
Elf_Internal_Shdr *symtab_hdr;
if (!local_got)
continue;
symtab_hdr = &elf_tdata (i)->symtab_hdr;
if (elf_bad_symtab (i))
locsymcount = symtab_hdr->sh_size / sizeof (Elf_External_Sym);
if (local_got[j] > 0)
{
local_got[j] = gotoff;
gotoff += ARCH_SIZE / 8;
}
else
locsymcount = symtab_hdr->sh_info;
for (j = 0; j < locsymcount; ++j)
local_got[j] = (local_got[j] > 0 ? gotoff++ : (bfd_vma) - 1);
local_got[j] = (bfd_vma) -1;
}
/* Then the global .got and .plt entries. */
off[0] = gotoff;
off[1] = 0;
elf_link_hash_traverse (elf_hash_table (info),
elf_gc_allocate_got_offsets,
(PTR) off);
}
/* Then the global .got and .plt entries. */
off[0] = gotoff;
off[1] = 0;
elf_link_hash_traverse (elf_hash_table (info),
elf_gc_allocate_got_offsets,
(PTR) off);
return true;
}
@ -5823,7 +5852,13 @@ elf_gc_allocate_got_offsets (h, offarg)
{
bfd_vma *off = (bfd_vma *) offarg;
h->got.offset = (h->got.refcount > 0 ? off[0]++ : (bfd_vma) - 1);
if (h->got.refcount > 0)
{
h->got.offset = off[0];
off[0] += ARCH_SIZE / 8;
}
else
h->got.offset = (bfd_vma) -1;
return true;
}