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2010-09-24 Thomas Schwinge <thomas@codesourcery.com> 

* elf32-arm.c, elf32-cris.c, elf32-hppa.c, elf32-i370.c, elf32-m32r.c,
	elf32-m68k.c, elf32-microblaze.c, elf32-ppc.c, elf32-score.c,
	elf32-score7.c, elf32-sh.c, elf32-vax.c, elf32-xtensa.c, elf64-alpha.c,
	elf64-hppa.c, elf64-mips.c, elf64-ppc.c, elf64-sparc.c, elfcode.h,
	elflink.c, elfxx-ia64.c, elfxx-mips.c: Use STN_UNDEF when referring to
	the zero symbol index.
This commit is contained in:
Thomas Schwinge 2010-09-24 12:14:26 +00:00
parent 2c2fa401c5
commit cf35638d43
23 changed files with 66 additions and 59 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
bfd/ChangeLog
View File

@ -1,5 +1,12 @@
2010-09-24 Thomas Schwinge <thomas@codesourcery.com>
* elf32-arm.c, elf32-cris.c, elf32-hppa.c, elf32-i370.c, elf32-m32r.c,
elf32-m68k.c, elf32-microblaze.c, elf32-ppc.c, elf32-score.c,
elf32-score7.c, elf32-sh.c, elf32-vax.c, elf32-xtensa.c, elf64-alpha.c,
elf64-hppa.c, elf64-mips.c, elf64-ppc.c, elf64-sparc.c, elfcode.h,
elflink.c, elfxx-ia64.c, elfxx-mips.c: Use STN_UNDEF when referring to
the zero symbol index.
* elflink.c (bfd_elf_reloc_symbol_deleted_p): Compare the symbol index
to STN_UNDEF, not SHN_UNDEF.

4
bfd/elf32-arm.c
View File

@ -9063,7 +9063,7 @@ elf32_arm_relocate_section (bfd * output_bfd,
name = bfd_section_name (input_bfd, sec);
}
if (r_symndx != 0
if (r_symndx != STN_UNDEF
&& r_type != R_ARM_NONE
&& (h == NULL
|| h->root.type == bfd_link_hash_defined
@ -10902,7 +10902,7 @@ elf32_arm_check_relocs (bfd *abfd, struct bfd_link_info *info,
/* PR 9934: It is possible to have relocations that do not
refer to symbols, thus it is also possible to have an
object file containing relocations but no symbol table. */
&& (r_symndx > 0 || nsyms > 0))
&& (r_symndx > STN_UNDEF || nsyms > 0))
{
(*_bfd_error_handler) (_("%B: bad symbol index: %d"), abfd,
r_symndx);

2
bfd/elf32-cris.c
View File

@ -1493,7 +1493,7 @@ cris_elf_relocate_section (bfd *output_bfd ATTRIBUTE_UNUSED,
case R_CRIS_16:
case R_CRIS_32:
if (info->shared
&& r_symndx != 0
&& r_symndx != STN_UNDEF
&& (input_section->flags & SEC_ALLOC) != 0
&& ((r_type != R_CRIS_8_PCREL
&& r_type != R_CRIS_16_PCREL

4
bfd/elf32-hppa.c
View File

@ -4472,7 +4472,7 @@ static enum elf_reloc_type_class
elf32_hppa_reloc_type_class (const Elf_Internal_Rela *rela)
{
/* Handle TLS relocs first; we don't want them to be marked
relative by the "if (ELF32_R_SYM (rela->r_info) == 0)"
relative by the "if (ELF32_R_SYM (rela->r_info) == STN_UNDEF)"
check below. */
switch ((int) ELF32_R_TYPE (rela->r_info))
{
@ -4482,7 +4482,7 @@ elf32_hppa_reloc_type_class (const Elf_Internal_Rela *rela)
return reloc_class_normal;
}
if (ELF32_R_SYM (rela->r_info) == 0)
if (ELF32_R_SYM (rela->r_info) == STN_UNDEF)
return reloc_class_relative;
switch ((int) ELF32_R_TYPE (rela->r_info))

2
bfd/elf32-i370.c
View File

@ -1183,7 +1183,7 @@ i370_elf_relocate_section (bfd *output_bfd,
case (int) R_I370_ADDR31:
case (int) R_I370_ADDR16:
if (info->shared
&& r_symndx != 0)
&& r_symndx != STN_UNDEF)
{
Elf_Internal_Rela outrel;
bfd_byte *loc;

2
bfd/elf32-m32r.c
View File

@ -2897,7 +2897,7 @@ m32r_elf_relocate_section (bfd *output_bfd ATTRIBUTE_UNUSED,
case R_M32R_HI16_ULO_RELA:
case R_M32R_LO16_RELA:
if (info->shared
&& r_symndx != 0
&& r_symndx != STN_UNDEF
&& (input_section->flags & SEC_ALLOC) != 0
&& (( r_type != R_M32R_10_PCREL_RELA
&& r_type != R_M32R_18_PCREL_RELA

4
bfd/elf32-m68k.c
View File

@ -4034,7 +4034,7 @@ elf_m68k_relocate_section (output_bfd, info, input_bfd, input_section,
case R_68K_PC16:
case R_68K_PC32:
if (info->shared
&& r_symndx != 0
&& r_symndx != STN_UNDEF
&& (input_section->flags & SEC_ALLOC) != 0
&& (h == NULL
|| ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
@ -4169,7 +4169,7 @@ elf_m68k_relocate_section (output_bfd, info, input_bfd, input_section,
return FALSE;
}
if (r_symndx != 0
if (r_symndx != STN_UNDEF
&& r_type != R_68K_NONE
&& (h == NULL
|| h->root.type == bfd_link_hash_defined

4
bfd/elf32-microblaze.c
View File

@ -1067,10 +1067,10 @@ microblaze_elf_relocate_section (bfd *output_bfd,
case (int) R_MICROBLAZE_64:
case (int) R_MICROBLAZE_32:
{
/* r_symndx will be zero only for relocs against symbols
/* r_symndx will be STN_UNDEF (zero) only for relocs against symbols
from removed linkonce sections, or sections discarded by
a linker script. */
if (r_symndx == 0 || (input_section->flags & SEC_ALLOC) == 0)
if (r_symndx == STN_UNDEF || (input_section->flags & SEC_ALLOC) == 0)
{
relocation += addend;
if (r_type == R_MICROBLAZE_32)

10
bfd/elf32-ppc.c
View File

@ -6985,9 +6985,9 @@ ppc_elf_relocate_section (bfd *output_bfd,
if (local_sections[r_symndx] == sec)
break;
if (r_symndx >= symtab_hdr->sh_info)
r_symndx = 0;
r_symndx = STN_UNDEF;
rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
if (r_symndx != 0)
if (r_symndx != STN_UNDEF)
rel->r_addend -= (local_syms[r_symndx].st_value
+ sec->output_offset
+ sec->output_section->vma);
@ -7053,9 +7053,9 @@ ppc_elf_relocate_section (bfd *output_bfd,
if (local_sections[r_symndx] == sec)
break;
if (r_symndx >= symtab_hdr->sh_info)
r_symndx = 0;
r_symndx = STN_UNDEF;
rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
if (r_symndx != 0)
if (r_symndx != STN_UNDEF)
rel->r_addend -= (local_syms[r_symndx].st_value
+ sec->output_offset
+ sec->output_section->vma);
@ -7658,7 +7658,7 @@ ppc_elf_relocate_section (bfd *output_bfd,
sym_name);
ret = FALSE;
}
else if (r_symndx == 0 || bfd_is_abs_section (sec))
else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
;
else if (sec == NULL || sec->owner == NULL)
{

6
bfd/elf32-score.c
View File

@ -2126,7 +2126,7 @@ score_elf_final_link_relocate (reloc_howto_type *howto,
&& h != NULL
&& h->root.def_dynamic
&& !h->root.def_regular))
&& r_symndx != 0
&& r_symndx != STN_UNDEF
&& (input_section->flags & SEC_ALLOC) != 0)
{
/* If we're creating a shared library, or this relocation is against a symbol
@ -2139,8 +2139,8 @@ score_elf_final_link_relocate (reloc_howto_type *howto,
input_section))
return bfd_reloc_undefined;
}
else if (r_symndx == 0)
/* r_symndx will be zero only for relocs against symbols
else if (r_symndx == STN_UNDEF)
/* r_symndx will be STN_UNDEF (zero) only for relocs against symbols
from removed linkonce sections, or sections discarded by
a linker script. */
value = 0;

6
bfd/elf32-score7.c
View File

@ -2025,7 +2025,7 @@ score_elf_final_link_relocate (reloc_howto_type *howto,
&& h != NULL
&& h->root.def_dynamic
&& !h->root.def_regular))
&& r_symndx != 0
&& r_symndx != STN_UNDEF
&& (input_section->flags & SEC_ALLOC) != 0)
{
/* If we're creating a shared library, or this relocation is against a symbol
@ -2038,8 +2038,8 @@ score_elf_final_link_relocate (reloc_howto_type *howto,
input_section))
return bfd_reloc_undefined;
}
else if (r_symndx == 0)
/* r_symndx will be zero only for relocs against symbols
else if (r_symndx == STN_UNDEF)
/* r_symndx will be STN_UNDEF (zero) only for relocs against symbols
from removed linkonce sections, or sections discarded by
a linker script. */
value = 0;

2
bfd/elf32-sh.c
View File

@ -4405,7 +4405,7 @@ sh_elf_relocate_section (bfd *output_bfd, struct bfd_link_info *info,
&& (h == NULL
|| ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
|| h->root.type != bfd_link_hash_undefweak)
&& r_symndx != 0
&& r_symndx != STN_UNDEF
&& (input_section->flags & SEC_ALLOC) != 0
&& !is_vxworks_tls
&& (r_type == R_SH_DIR32

2
bfd/elf32-vax.c
View File

@ -1611,7 +1611,7 @@ elf_vax_relocate_section (bfd *output_bfd,
case R_VAX_16:
case R_VAX_32:
if (info->shared
&& r_symndx != 0
&& r_symndx != STN_UNDEF
&& (input_section->flags & SEC_ALLOC) != 0
&& ((r_type != R_VAX_PC8
&& r_type != R_VAX_PC16

2
bfd/elf32-xtensa.c
View File

@ -2800,7 +2800,7 @@ elf_xtensa_relocate_section (bfd *output_bfd,
name = bfd_section_name (input_bfd, sec);
}
if (r_symndx != 0
if (r_symndx != STN_UNDEF
&& r_type != R_XTENSA_NONE
&& (h == NULL
|| h->root.type == bfd_link_hash_defined

22
bfd/elf64-alpha.c
View File

@ -1866,8 +1866,8 @@ elf64_alpha_check_relocs (bfd *abfd, struct bfd_link_info *info,
case R_ALPHA_TLSLDM:
/* The symbol for a TLSLDM reloc is ignored. Collapse the
reloc to the 0 symbol so that they all match. */
r_symndx = 0;
reloc to the STN_UNDEF (0) symbol so that they all match. */
r_symndx = STN_UNDEF;
h = 0;
maybe_dynamic = FALSE;
/* FALLTHRU */
@ -3491,7 +3491,7 @@ elf64_alpha_relax_tls_get_addr (struct alpha_relax_info *info, bfd_vma symval,
as appropriate. */
use_gottprel = FALSE;
new_symndx = is_gd ? ELF64_R_SYM (irel->r_info) : 0;
new_symndx = is_gd ? ELF64_R_SYM (irel->r_info) : STN_UNDEF;
/* Beware of the compiler hoisting part of the sequence out a loop
and adjusting the destination register for the TLSGD insn. If this
@ -3724,8 +3724,8 @@ elf64_alpha_relax_section (bfd *abfd, asection *sec,
case R_ALPHA_TLSLDM:
/* The symbol for a TLSLDM reloc is ignored. Collapse the
reloc to the 0 symbol so that they all match. */
r_symndx = 0;
reloc to the STN_UNDEF (0) symbol so that they all match. */
r_symndx = STN_UNDEF;
break;
default:
@ -4154,9 +4154,9 @@ elf64_alpha_relocate_section (bfd *output_bfd, struct bfd_link_info *info,
r_symndx = ELF64_R_SYM(rel->r_info);
/* The symbol for a TLSLDM reloc is ignored. Collapse the
reloc to the 0 symbol so that they all match. */
reloc to the STN_UNDEF (0) symbol so that they all match. */
if (r_type == R_ALPHA_TLSLDM)
r_symndx = 0;
r_symndx = STN_UNDEF;
if (r_symndx < symtab_hdr->sh_info)
{
@ -4166,10 +4166,10 @@ elf64_alpha_relocate_section (bfd *output_bfd, struct bfd_link_info *info,
msec = sec;
value = _bfd_elf_rela_local_sym (output_bfd, sym, &msec, rel);
/* If this is a tp-relative relocation against sym 0,
/* If this is a tp-relative relocation against sym STN_UNDEF (0),
this is hackery from relax_section. Force the value to
be the tls module base. */
if (r_symndx == 0
if (r_symndx == STN_UNDEF
&& (r_type == R_ALPHA_TLSLDM
|| r_type == R_ALPHA_GOTTPREL
|| r_type == R_ALPHA_TPREL64
@ -4455,7 +4455,7 @@ elf64_alpha_relocate_section (bfd *output_bfd, struct bfd_link_info *info,
dynaddend = value - dtp_base;
}
else if (info->shared
&& r_symndx != 0
&& r_symndx != STN_UNDEF
&& (input_section->flags & SEC_ALLOC)
&& !undef_weak_ref)
{
@ -4503,7 +4503,7 @@ elf64_alpha_relocate_section (bfd *output_bfd, struct bfd_link_info *info,
/* ??? .eh_frame references to discarded sections will be smashed
to relocations against SHN_UNDEF. The .eh_frame format allows
NULL to be encoded as 0 in any format, so this works here. */
if (r_symndx == 0)
if (r_symndx == STN_UNDEF)
howto = (elf64_alpha_howto_table
+ (r_type - R_ALPHA_SREL32 + R_ALPHA_REFLONG));
goto default_reloc;

2
bfd/elf64-hppa.c
View File

@ -2465,7 +2465,7 @@ elf64_hppa_finalize_dynreloc (struct elf_link_hash_entry *eh,
static enum elf_reloc_type_class
elf64_hppa_reloc_type_class (const Elf_Internal_Rela *rela)
{
if (ELF64_R_SYM (rela->r_info) == 0)
if (ELF64_R_SYM (rela->r_info) == STN_UNDEF)
return reloc_class_relative;
switch ((int) ELF64_R_TYPE (rela->r_info))

2
bfd/elf64-mips.c
View File

@ -2619,7 +2619,7 @@ mips_elf64_slurp_one_reloc_table (bfd *abfd, asection *asect,
default:
if (! used_sym)
{
if (rela.r_sym == 0)
if (rela.r_sym == STN_UNDEF)
relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
else
{

14
bfd/elf64-ppc.c
View File

@ -11668,7 +11668,7 @@ ppc64_elf_relocate_section (bfd *output_bfd,
/* Check that tls relocs are used with tls syms, and non-tls
relocs are used with non-tls syms. */
if (r_symndx != 0
if (r_symndx != STN_UNDEF
&& r_type != R_PPC64_NONE
&& (h == NULL
|| h->elf.root.type == bfd_link_hash_defined
@ -11917,9 +11917,9 @@ ppc64_elf_relocate_section (bfd *output_bfd,
if (local_sections[r_symndx] == sec)
break;
if (r_symndx >= symtab_hdr->sh_info)
r_symndx = 0;
r_symndx = STN_UNDEF;
rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
if (r_symndx != 0)
if (r_symndx != STN_UNDEF)
rel->r_addend -= (local_syms[r_symndx].st_value
+ sec->output_offset
+ sec->output_section->vma);
@ -12025,9 +12025,9 @@ ppc64_elf_relocate_section (bfd *output_bfd,
if (local_sections[r_symndx] == sec)
break;
if (r_symndx >= symtab_hdr->sh_info)
r_symndx = 0;
r_symndx = STN_UNDEF;
rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
if (r_symndx != 0)
if (r_symndx != STN_UNDEF)
rel->r_addend -= (local_syms[r_symndx].st_value
+ sec->output_offset
+ sec->output_section->vma);
@ -12569,7 +12569,7 @@ ppc64_elf_relocate_section (bfd *output_bfd,
case R_PPC64_TOC:
/* Relocation value is TOC base. */
relocation = TOCstart;
if (r_symndx == 0)
if (r_symndx == STN_UNDEF)
relocation += htab->stub_group[input_section->id].toc_off;
else if (unresolved_reloc)
;
@ -12819,7 +12819,7 @@ ppc64_elf_relocate_section (bfd *output_bfd,
sym_name);
ret = FALSE;
}
else if (r_symndx == 0 || bfd_is_abs_section (sec))
else if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec))
;
else if (sec == NULL || sec->owner == NULL)
{

2
bfd/elf64-sparc.c
View File

@ -98,7 +98,7 @@ elf64_sparc_slurp_one_reloc_table (bfd *abfd, asection *asect,
else
relent->address = rela.r_offset - asect->vma;
if (ELF64_R_SYM (rela.r_info) == 0)
if (ELF64_R_SYM (rela.r_info) == STN_UNDEF)
relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
else
{

2
bfd/elfcode.h
View File

@ -1466,7 +1466,7 @@ elf_slurp_reloc_table_from_section (bfd *abfd,
else
relent->address = rela.r_offset - asect->vma;
if (ELF_R_SYM (rela.r_info) == 0)
if (ELF_R_SYM (rela.r_info) == STN_UNDEF)
relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
else if (ELF_R_SYM (rela.r_info) > symcount)
{

12
bfd/elflink.c
View File

@ -2170,7 +2170,7 @@ elf_link_read_relocs_from_section (bfd *abfd,
return FALSE;
}
}
else if (r_symndx != 0)
else if (r_symndx != STN_UNDEF)
{
(*_bfd_error_handler)
(_("%B: non-zero symbol index (0x%lx) for offset 0x%lx in section `%A'"
@ -9500,7 +9500,7 @@ elf_link_input_bfd (struct elf_final_link_info *finfo, bfd *input_bfd)
discarded section. */
if ((sec = *ps) != NULL && elf_discarded_section (sec))
{
BFD_ASSERT (r_symndx != 0);
BFD_ASSERT (r_symndx != STN_UNDEF);
if (action_discarded & COMPLAIN)
(*finfo->info->callbacks->einfo)
(_("%X`%s' referenced in section `%A' of %B: "
@ -9667,7 +9667,7 @@ elf_link_input_bfd (struct elf_final_link_info *finfo, bfd *input_bfd)
/* I suppose the backend ought to fill in the
section of any STT_SECTION symbol against a
processor specific section. */
r_symndx = 0;
r_symndx = STN_UNDEF;
if (bfd_is_abs_section (sec))
;
else if (sec == NULL || sec->owner == NULL)
@ -9696,7 +9696,7 @@ elf_link_input_bfd (struct elf_final_link_info *finfo, bfd *input_bfd)
if (!bfd_is_abs_section (osec))
{
r_symndx = osec->target_index;
if (r_symndx == 0)
if (r_symndx == STN_UNDEF)
{
struct elf_link_hash_table *htab;
asection *oi;
@ -9714,7 +9714,7 @@ elf_link_input_bfd (struct elf_final_link_info *finfo, bfd *input_bfd)
}
}
BFD_ASSERT (r_symndx != 0);
BFD_ASSERT (r_symndx != STN_UNDEF);
}
}
@ -11471,7 +11471,7 @@ _bfd_elf_gc_mark_rsec (struct bfd_link_info *info, asection *sec,
struct elf_link_hash_entry *h;
r_symndx = cookie->rel->r_info >> cookie->r_sym_shift;
if (r_symndx == 0)
if (r_symndx == STN_UNDEF)
return NULL;
if (r_symndx >= cookie->locsymcount

4
bfd/elfxx-ia64.c
View File

@ -4695,7 +4695,7 @@ elfNN_ia64_relocate_section (bfd *output_bfd,
case R_IA64_DIR64LSB:
/* Install a dynamic relocation for this reloc. */
if ((dynamic_symbol_p || info->shared)
&& r_symndx != 0
&& r_symndx != STN_UNDEF
&& (input_section->flags & SEC_ALLOC) != 0)
{
unsigned int dyn_r_type;
@ -4924,7 +4924,7 @@ elfNN_ia64_relocate_section (bfd *output_bfd,
case R_IA64_PCREL64MSB:
case R_IA64_PCREL64LSB:
/* Install a dynamic relocation for this reloc. */
if (dynamic_symbol_p && r_symndx != 0)
if (dynamic_symbol_p && r_symndx != STN_UNDEF)
{
BFD_ASSERT (srel != NULL);

8
bfd/elfxx-mips.c
View File

@ -5282,7 +5282,7 @@ mips_elf_calculate_relocation (bfd *abfd, bfd *input_bfd,
&& h->root.def_dynamic
&& !h->root.def_regular
&& !h->has_static_relocs))
&& r_symndx != 0
&& r_symndx != STN_UNDEF
&& (h == NULL
|| h->root.root.type != bfd_link_hash_undefweak
|| ELF_ST_VISIBILITY (h->root.other) == STV_DEFAULT)
@ -7752,7 +7752,7 @@ _bfd_mips_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
case R_MIPS_TLS_LDM:
if (r_type == R_MIPS_TLS_LDM)
{
r_symndx = 0;
r_symndx = STN_UNDEF;
h = NULL;
}
/* Fall through */
@ -7778,7 +7778,7 @@ _bfd_mips_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
}
else
{
BFD_ASSERT (flag == GOT_TLS_LDM || r_symndx != 0);
BFD_ASSERT (flag == GOT_TLS_LDM || r_symndx != STN_UNDEF);
if (!mips_elf_record_local_got_symbol (abfd, r_symndx,
rel->r_addend,
@ -7918,7 +7918,7 @@ _bfd_mips_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
case R_MIPS_HIGHEST:
/* Don't refuse a high part relocation if it's against
no symbol (e.g. part of a compound relocation). */
if (r_symndx == 0)
if (r_symndx == STN_UNDEF)
break;
/* R_MIPS_HI16 against _gp_disp is used for $gp setup,