+2016-02-26 H.J. Lu <hongjiu.lu@intel.com>
+
+ PR ld/19636
+ PR ld/19704
+ PR ld/19719
+ * elf32-i386.c (UNDEFINED_WEAK_RESOLVED_TO_ZERO): New.
+ (elf_i386_link_hash_entry): Add has_got_reloc and
+ has_non_got_reloc.
+ (elf_i386_link_hash_table): Add interp.
+ (elf_i386_link_hash_newfunc): Initialize has_got_reloc and
+ has_non_got_reloc.
+ (elf_i386_copy_indirect_symbol): Copy has_got_reloc and
+ has_non_got_reloc.
+ (elf_i386_check_relocs): Set has_got_reloc and has_non_got_reloc.
+ (elf_i386_fixup_symbol): New function.
+ (elf_i386_pie_finish_undefweak_symbol): Likewise.
+ (elf_i386_allocate_dynrelocs): Don't allocate space for dynamic
+ relocations and discard relocations against resolved undefined
+ weak symbols in executable. Don't make resolved undefined weak
+ symbols in executable dynamic. Keep dynamic non-GOT/non-PLT
+ relocation against undefined weak symbols in PIE.
+ (elf_i386_size_dynamic_sections): Set interp to .interp section.
+ (elf_i386_relocate_section): Don't generate dynamic relocations
+ against resolved undefined weak symbols in PIE, except for
+ R_386_PC32.
+ (elf_i386_finish_dynamic_symbol): Keep PLT/GOT entries without
+ dynamic PLT/GOT relocations for resolved undefined weak symbols.
+ Don't generate dynamic relocation against resolved undefined weak
+ symbol in executable.
+ (elf_i386_finish_dynamic_sections): Call
+ elf_i386_pie_finish_undefweak_symbol on all symbols in PIE.
+ (elf_backend_fixup_symbol): New.
+ * elf64-x86-64.c (UNDEFINED_WEAK_RESOLVED_TO_ZERO): New.
+ (elf_x86_64_link_hash_entry): Add has_got_reloc and
+ has_non_got_reloc.
+ (elf_x86_64_link_hash_table): Add interp.
+ (elf_x86_64_link_hash_newfunc): Initialize has_got_reloc and
+ has_non_got_reloc.
+ (elf_x86_64_copy_indirect_symbol): Copy has_got_reloc and
+ has_non_got_reloc.
+ (elf_x86_64_check_relocs): Set has_got_reloc and
+ has_non_got_reloc.
+ (elf_x86_64_fixup_symbol): New function.
+ (elf_x86_64_pie_finish_undefweak_symbol): Likewise.
+ (elf_x86_64_allocate_dynrelocs): Don't allocate space for dynamic
+ relocations and discard relocations against resolved undefined
+ weak symbols in executable. Don't make resolved undefined weak
+ symbols in executable dynamic.
+ (elf_x86_64_size_dynamic_sections): Set interp to .interp section.
+ (elf_x86_64_relocate_section): Check relocation overflow for
+ dynamic relocations against unresolved weak undefined symbols.
+ Don't generate dynamic relocations against resolved weak
+ undefined symbols in PIE.
+ (elf_x86_64_finish_dynamic_symbol): Keep PLT/GOT entries without
+ dynamic PLT/GOT relocations for resolved undefined weak symbols.
+ Don't generate dynamic relocation against resolved undefined weak
+ symbol in executable.
+ (elf_x86_64_finish_dynamic_sections): Call
+ elf_x86_64_pie_finish_undefweak_symbol on all symbols in PIE.
+ (elf_backend_fixup_symbol): New.
+
2016-02-26 Alan Modra <amodra@gmail.com>
* elf64-ppc.c (create_linkage_sections): Create sfpr when
#define elf_backend_arch_data &elf_i386_arch_bed
+/* Is a undefined weak symbol which is resolved to 0. Reference to an
+ undefined weak symbol is resolved to 0 when building executable if
+ it isn't dynamic and
+ 1. Has non-GOT/non-PLT relocations in text section. Or
+ 2. Has no GOT/PLT relocation.
+ */
+#define UNDEFINED_WEAK_RESOLVED_TO_ZERO(INFO, EH) \
+ ((EH)->elf.root.type == bfd_link_hash_undefweak \
+ && bfd_link_executable (INFO) \
+ && (elf_i386_hash_table (INFO)->interp == NULL \
+ || !(EH)->has_got_reloc \
+ || (EH)->has_non_got_reloc \
+ || !(INFO)->dynamic_undefined_weak))
+
/* i386 ELF linker hash entry. */
struct elf_i386_link_hash_entry
/* Symbol is referenced by R_386_GOTOFF relocation. */
unsigned int gotoff_ref : 1;
+ /* Symbol has GOT or PLT relocations. */
+ unsigned int has_got_reloc : 1;
+
+ /* Symbol has non-GOT/non-PLT relocations in text sections. */
+ unsigned int has_non_got_reloc : 1;
+
/* Reference count of C/C++ function pointer relocations in read-write
section which can be resolved at run-time. */
bfd_signed_vma func_pointer_refcount;
struct elf_link_hash_table elf;
/* Short-cuts to get to dynamic linker sections. */
+ asection *interp;
asection *sdynbss;
asection *srelbss;
asection *plt_eh_frame;
eh->dyn_relocs = NULL;
eh->tls_type = GOT_UNKNOWN;
eh->gotoff_ref = 0;
+ eh->has_got_reloc = 0;
+ eh->has_non_got_reloc = 0;
eh->func_pointer_refcount = 0;
eh->plt_got.offset = (bfd_vma) -1;
eh->tlsdesc_got = (bfd_vma) -1;
generate a R_386_COPY reloc. */
edir->gotoff_ref |= eind->gotoff_ref;
+ edir->has_got_reloc |= eind->has_got_reloc;
+ edir->has_non_got_reloc |= eind->has_non_got_reloc;
+
if (ELIMINATE_COPY_RELOCS
&& ind->root.type != bfd_link_hash_indirect
&& dir->dynamic_adjusted)
if (h == NULL)
continue;
+ eh->has_got_reloc = 1;
h->needs_plt = 1;
h->plt.refcount += 1;
break;
return FALSE;
}
if (r_type != R_386_TLS_IE)
- break;
+ {
+ if (eh != NULL)
+ eh->has_got_reloc = 1;
+ break;
+ }
/* Fall through */
case R_386_TLS_LE_32:
case R_386_TLS_LE:
+ if (eh != NULL)
+ eh->has_got_reloc = 1;
if (bfd_link_executable (info))
break;
info->flags |= DF_STATIC_TLS;
- /* Fall through */
+ goto do_relocation;
case R_386_32:
case R_386_PC32:
+ if (eh != NULL && (sec->flags & SEC_CODE) != 0)
+ eh->has_non_got_reloc = 1;
+do_relocation:
if (h != NULL && bfd_link_executable (info))
{
/* If this reloc is in a read-only section, we might
return TRUE;
}
+/* Remove undefined weak symbol from the dynamic symbol table if it
+ is resolved to 0. */
+
+static bfd_boolean
+elf_i386_fixup_symbol (struct bfd_link_info *info,
+ struct elf_link_hash_entry *h)
+{
+ if (h->dynindx != -1
+ && UNDEFINED_WEAK_RESOLVED_TO_ZERO (info,
+ elf_i386_hash_entry (h)))
+ {
+ h->dynindx = -1;
+ _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
+ h->dynstr_index);
+ }
+ return TRUE;
+}
+
/* Adjust a symbol defined by a dynamic object and referenced by a
regular object. The current definition is in some section of the
dynamic object, but we're not including those sections. We have to
struct elf_i386_link_hash_entry *eh;
struct elf_dyn_relocs *p;
unsigned plt_entry_size;
+ bfd_boolean resolved_to_zero;
if (h->root.type == bfd_link_hash_indirect)
return TRUE;
plt_entry_size = GET_PLT_ENTRY_SIZE (info->output_bfd);
+ resolved_to_zero = UNDEFINED_WEAK_RESOLVED_TO_ZERO (info, eh);
+
/* Clear the reference count of function pointer relocations if
symbol isn't a normal function. */
if (h->type != STT_FUNC)
/* Make sure this symbol is output as a dynamic symbol.
Undefined weak syms won't yet be marked as dynamic. */
if (h->dynindx == -1
- && !h->forced_local)
+ && !h->forced_local
+ && !resolved_to_zero)
{
if (! bfd_elf_link_record_dynamic_symbol (info, h))
return FALSE;
script. */
htab->elf.sgotplt->size += 4;
- /* We also need to make an entry in the .rel.plt section. */
- htab->elf.srelplt->size += sizeof (Elf32_External_Rel);
- htab->elf.srelplt->reloc_count++;
+ /* There should be no PLT relocation against resolved
+ undefined weak symbol in executable. */
+ if (!resolved_to_zero)
+ {
+ /* We also need to make an entry in the .rel.plt
+ section. */
+ htab->elf.srelplt->size += sizeof (Elf32_External_Rel);
+ htab->elf.srelplt->reloc_count++;
+ }
}
if (get_elf_i386_backend_data (info->output_bfd)->is_vxworks
/* Make sure this symbol is output as a dynamic symbol.
Undefined weak syms won't yet be marked as dynamic. */
if (h->dynindx == -1
- && !h->forced_local)
+ && !h->forced_local
+ && !resolved_to_zero)
{
if (! bfd_elf_link_record_dynamic_symbol (info, h))
return FALSE;
R_386_TLS_IE resp. R_386_TLS_GOTIE needs one dynamic relocation,
(but if both R_386_TLS_IE_32 and R_386_TLS_IE is present, we
need two), R_386_TLS_GD needs one if local symbol and two if
- global. */
+ global. No dynamic relocation against resolved undefined weak
+ symbol in executable. */
if (tls_type == GOT_TLS_IE_BOTH)
htab->elf.srelgot->size += 2 * sizeof (Elf32_External_Rel);
else if ((GOT_TLS_GD_P (tls_type) && h->dynindx == -1)
else if (GOT_TLS_GD_P (tls_type))
htab->elf.srelgot->size += 2 * sizeof (Elf32_External_Rel);
else if (! GOT_TLS_GDESC_P (tls_type)
- && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
+ && ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
+ && !resolved_to_zero)
|| h->root.type != bfd_link_hash_undefweak)
&& (bfd_link_pic (info)
|| WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
}
/* Also discard relocs on undefined weak syms with non-default
- visibility. */
+ visibility or in PIE. */
if (eh->dyn_relocs != NULL
&& h->root.type == bfd_link_hash_undefweak)
{
- if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
- eh->dyn_relocs = NULL;
+ /* Undefined weak symbol is never bound locally in shared
+ library. */
+ if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
+ || resolved_to_zero)
+ {
+ if (h->non_got_ref)
+ {
+ /* Keep dynamic non-GOT/non-PLT relocation so that we
+ can branch to 0 without PLT. */
+ struct elf_dyn_relocs **pp;
+
+ for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
+ if (p->pc_count == 0)
+ *pp = p->next;
+ else
+ {
+ /* Remove non-R_386_PC32 relocation. */
+ p->count = p->pc_count;
+ pp = &p->next;
+ }
- /* Make sure undefined weak symbols are output as a dynamic
- symbol in PIEs. */
+ if (eh->dyn_relocs != NULL)
+ {
+ /* Make sure undefined weak symbols are output
+ as dynamic symbols in PIEs for dynamic non-GOT
+ non-PLT reloations. */
+ if (! bfd_elf_link_record_dynamic_symbol (info, h))
+ return FALSE;
+ }
+ }
+ else
+ eh->dyn_relocs = NULL;
+ }
else if (h->dynindx == -1
&& !h->forced_local)
{
dynamic. Keep dynamic relocations for run-time function
pointer initialization. */
- if ((!h->non_got_ref || eh->func_pointer_refcount > 0)
+ if ((!h->non_got_ref
+ || eh->func_pointer_refcount > 0
+ || (h->root.type == bfd_link_hash_undefweak
+ && !resolved_to_zero))
&& ((h->def_dynamic
&& !h->def_regular)
|| (htab->elf.dynamic_sections_created
/* Make sure this symbol is output as a dynamic symbol.
Undefined weak syms won't yet be marked as dynamic. */
if (h->dynindx == -1
- && !h->forced_local)
+ && !h->forced_local
+ && !resolved_to_zero)
{
if (! bfd_elf_link_record_dynamic_symbol (info, h))
return FALSE;
abort ();
s->size = sizeof ELF_DYNAMIC_INTERPRETER;
s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
+ htab->interp = s;
}
}
int tls_type;
bfd_vma st_size;
asection *resolved_plt;
+ bfd_boolean resolved_to_zero;
r_type = ELF32_R_TYPE (rel->r_info);
if (r_type == R_386_GNU_VTINHERIT
}
eh = (struct elf_i386_link_hash_entry *) h;
+ resolved_to_zero = (eh != NULL
+ && UNDEFINED_WEAK_RESOLVED_TO_ZERO (info, eh));
+
switch (r_type)
{
case R_386_GOT32X:
|| is_vxworks_tls)
break;
- /* Copy dynamic function pointer relocations. */
+ /* Copy dynamic function pointer relocations. Don't generate
+ dynamic relocations against resolved undefined weak symbols
+ in PIE, except for R_386_PC32. */
if ((bfd_link_pic (info)
&& (h == NULL
- || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
- || h->root.type != bfd_link_hash_undefweak)
+ || ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
+ && (!resolved_to_zero
+ || r_type == R_386_PC32))
+ || h->root.type != bfd_link_hash_undefweak))
&& ((r_type != R_386_PC32 && r_type != R_386_SIZE32)
|| !SYMBOL_CALLS_LOCAL (info, h)))
|| (ELIMINATE_COPY_RELOCS
&& !bfd_link_pic (info)
&& h != NULL
&& h->dynindx != -1
- && (!h->non_got_ref || eh->func_pointer_refcount > 0)
+ && (!h->non_got_ref
+ || eh->func_pointer_refcount > 0
+ || (h->root.type == bfd_link_hash_undefweak
+ && !resolved_to_zero))
&& ((h->def_dynamic
&& !h->def_regular)
|| h->root.type == bfd_link_hash_undefweak
unsigned plt_entry_size;
const struct elf_i386_backend_data *abed;
struct elf_i386_link_hash_entry *eh;
+ bfd_boolean local_undefweak;
htab = elf_i386_hash_table (info);
if (htab == NULL)
eh = (struct elf_i386_link_hash_entry *) h;
+ /* We keep PLT/GOT entries without dynamic PLT/GOT relocations for
+ resolved undefined weak symbols in executable so that their
+ references have value 0 at run-time. */
+ local_undefweak = UNDEFINED_WEAK_RESOLVED_TO_ZERO (info, eh);
+
if (h->plt.offset != (bfd_vma) -1)
{
bfd_vma plt_index;
it up. */
if ((h->dynindx == -1
+ && !local_undefweak
&& !((h->forced_local || bfd_link_executable (info))
&& h->def_regular
&& h->type == STT_GNU_IFUNC))
+ abed->plt->plt_got_offset);
}
- /* Fill in the entry in the global offset table. */
- bfd_put_32 (output_bfd,
- (plt->output_section->vma
- + plt->output_offset
- + h->plt.offset
- + abed->plt->plt_lazy_offset),
- gotplt->contents + got_offset);
-
- /* Fill in the entry in the .rel.plt section. */
- rel.r_offset = (gotplt->output_section->vma
- + gotplt->output_offset
- + got_offset);
- if (h->dynindx == -1
- || ((bfd_link_executable (info)
- || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
- && h->def_regular
- && h->type == STT_GNU_IFUNC))
+ /* Fill in the entry in the global offset table. Leave the entry
+ as zero for undefined weak symbol in PIE. No PLT relocation
+ against undefined weak symbol in PIE. */
+ if (!local_undefweak)
{
- /* If an STT_GNU_IFUNC symbol is locally defined, generate
- R_386_IRELATIVE instead of R_386_JUMP_SLOT. Store addend
- in the .got.plt section. */
bfd_put_32 (output_bfd,
- (h->root.u.def.value
- + h->root.u.def.section->output_section->vma
- + h->root.u.def.section->output_offset),
+ (plt->output_section->vma
+ + plt->output_offset
+ + h->plt.offset
+ + abed->plt->plt_lazy_offset),
gotplt->contents + got_offset);
- rel.r_info = ELF32_R_INFO (0, R_386_IRELATIVE);
- /* R_386_IRELATIVE comes last. */
- plt_index = htab->next_irelative_index--;
- }
- else
- {
- rel.r_info = ELF32_R_INFO (h->dynindx, R_386_JUMP_SLOT);
- plt_index = htab->next_jump_slot_index++;
- }
- loc = relplt->contents + plt_index * sizeof (Elf32_External_Rel);
- bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
- /* Don't fill PLT entry for static executables. */
- if (plt == htab->elf.splt)
- {
- bfd_put_32 (output_bfd, plt_index * sizeof (Elf32_External_Rel),
- plt->contents + h->plt.offset
- + abed->plt->plt_reloc_offset);
- bfd_put_32 (output_bfd, - (h->plt.offset
- + abed->plt->plt_plt_offset + 4),
- plt->contents + h->plt.offset
- + abed->plt->plt_plt_offset);
+ /* Fill in the entry in the .rel.plt section. */
+ rel.r_offset = (gotplt->output_section->vma
+ + gotplt->output_offset
+ + got_offset);
+ if (h->dynindx == -1
+ || ((bfd_link_executable (info)
+ || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
+ && h->def_regular
+ && h->type == STT_GNU_IFUNC))
+ {
+ /* If an STT_GNU_IFUNC symbol is locally defined, generate
+ R_386_IRELATIVE instead of R_386_JUMP_SLOT. Store addend
+ in the .got.plt section. */
+ bfd_put_32 (output_bfd,
+ (h->root.u.def.value
+ + h->root.u.def.section->output_section->vma
+ + h->root.u.def.section->output_offset),
+ gotplt->contents + got_offset);
+ rel.r_info = ELF32_R_INFO (0, R_386_IRELATIVE);
+ /* R_386_IRELATIVE comes last. */
+ plt_index = htab->next_irelative_index--;
+ }
+ else
+ {
+ rel.r_info = ELF32_R_INFO (h->dynindx, R_386_JUMP_SLOT);
+ plt_index = htab->next_jump_slot_index++;
+ }
+
+ loc = relplt->contents + plt_index * sizeof (Elf32_External_Rel);
+ bfd_elf32_swap_reloc_out (output_bfd, &rel, loc);
+
+ /* Don't fill PLT entry for static executables. */
+ if (plt == htab->elf.splt)
+ {
+ bfd_put_32 (output_bfd,
+ plt_index * sizeof (Elf32_External_Rel),
+ plt->contents + h->plt.offset
+ + abed->plt->plt_reloc_offset);
+ bfd_put_32 (output_bfd, - (h->plt.offset
+ + abed->plt->plt_plt_offset + 4),
+ plt->contents + h->plt.offset
+ + abed->plt->plt_plt_offset);
+ }
}
}
else if (eh->plt_got.offset != (bfd_vma) -1)
plt->contents + plt_offset + plt_got_offset);
}
- if (!h->def_regular
+ if (!local_undefweak
+ && !h->def_regular
&& (h->plt.offset != (bfd_vma) -1
|| eh->plt_got.offset != (bfd_vma) -1))
{
sym->st_value = 0;
}
+ /* Don't generate dynamic GOT relocation against undefined weak
+ symbol in executable. */
if (h->got.offset != (bfd_vma) -1
&& ! GOT_TLS_GD_ANY_P (elf_i386_hash_entry(h)->tls_type)
- && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE) == 0)
+ && (elf_i386_hash_entry(h)->tls_type & GOT_TLS_IE) == 0
+ && !local_undefweak)
{
Elf_Internal_Rela rel;
h, NULL);
}
+/* Finish up undefined weak symbol handling in PIE. Fill its PLT entry
+ here since undefined weak symbol may not be dynamic and may not be
+ called for elf_i386_finish_dynamic_symbol. */
+
+static bfd_boolean
+elf_i386_pie_finish_undefweak_symbol (struct bfd_hash_entry *bh,
+ void *inf)
+{
+ struct elf_link_hash_entry *h = (struct elf_link_hash_entry *) bh;
+ struct bfd_link_info *info = (struct bfd_link_info *) inf;
+
+ if (h->root.type != bfd_link_hash_undefweak
+ || h->dynindx != -1)
+ return TRUE;
+
+ return elf_i386_finish_dynamic_symbol (info->output_bfd,
+ info, h, NULL);
+}
+
/* Used to decide how to sort relocs in an optimal manner for the
dynamic linker, before writing them out. */
elf_i386_finish_local_dynamic_symbol,
info);
+ /* Fill PLT entries for undefined weak symbols in PIE. */
+ if (bfd_link_pie (info))
+ bfd_hash_traverse (&info->hash->table,
+ elf_i386_pie_finish_undefweak_symbol,
+ info);
+
return TRUE;
}
((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
#define elf_backend_hash_symbol elf_i386_hash_symbol
#define elf_backend_add_symbol_hook elf_i386_add_symbol_hook
+#define elf_backend_fixup_symbol elf_i386_fixup_symbol
#include "elf32-target.h"
#define elf_backend_arch_data &elf_x86_64_arch_bed
+/* Is a undefined weak symbol which is resolved to 0. Reference to an
+ undefined weak symbol is resolved to 0 when building executable if
+ it isn't dynamic and
+ 1. Has non-GOT/non-PLT relocations in text section. Or
+ 2. Has no GOT/PLT relocation.
+ */
+#define UNDEFINED_WEAK_RESOLVED_TO_ZERO(INFO, EH) \
+ ((EH)->elf.root.type == bfd_link_hash_undefweak \
+ && bfd_link_executable (INFO) \
+ && (elf_x86_64_hash_table (INFO)->interp == NULL \
+ || !(EH)->has_got_reloc \
+ || (EH)->has_non_got_reloc \
+ || !(INFO)->dynamic_undefined_weak))
+
/* x86-64 ELF linker hash entry. */
struct elf_x86_64_link_hash_entry
/* TRUE if symbol has at least one BND relocation. */
unsigned int has_bnd_reloc : 1;
+ /* TRUE if symbol has GOT or PLT relocations. */
+ unsigned int has_got_reloc : 1;
+
+ /* TRUE if symbol has non-GOT/non-PLT relocations in text sections. */
+ unsigned int has_non_got_reloc : 1;
+
/* Reference count of C/C++ function pointer relocations in read-write
section which can be resolved at run-time. */
bfd_signed_vma func_pointer_refcount;
struct elf_link_hash_table elf;
/* Short-cuts to get to dynamic linker sections. */
+ asection *interp;
asection *sdynbss;
asection *srelbss;
asection *plt_eh_frame;
eh->tls_type = GOT_UNKNOWN;
eh->needs_copy = 0;
eh->has_bnd_reloc = 0;
+ eh->has_got_reloc = 0;
+ eh->has_non_got_reloc = 0;
eh->func_pointer_refcount = 0;
eh->plt_bnd.offset = (bfd_vma) -1;
eh->plt_got.offset = (bfd_vma) -1;
if (!edir->has_bnd_reloc)
edir->has_bnd_reloc = eind->has_bnd_reloc;
+ if (!edir->has_got_reloc)
+ edir->has_got_reloc = eind->has_got_reloc;
+
+ if (!edir->has_non_got_reloc)
+ edir->has_non_got_reloc = eind->has_non_got_reloc;
+
if (eind->dyn_relocs != NULL)
{
if (edir->dyn_relocs != NULL)
unsigned int r_type;
unsigned long r_symndx;
struct elf_link_hash_entry *h;
+ struct elf_x86_64_link_hash_entry *eh;
Elf_Internal_Sym *isym;
const char *name;
bfd_boolean size_reloc;
rel, rel_end, h, r_symndx))
return FALSE;
+ eh = (struct elf_x86_64_link_hash_entry *) h;
switch (r_type)
{
case R_X86_64_TLSLD:
bfd_set_error (bfd_error_bad_value);
return FALSE;
}
+ if (eh != NULL)
+ eh->has_got_reloc = 1;
break;
case R_X86_64_GOTTPOFF:
if (h != NULL)
{
h->got.refcount += 1;
- old_tls_type = elf_x86_64_hash_entry (h)->tls_type;
+ old_tls_type = eh->tls_type;
}
else
{
if (old_tls_type != tls_type)
{
- if (h != NULL)
- elf_x86_64_hash_entry (h)->tls_type = tls_type;
+ if (eh != NULL)
+ eh->tls_type = tls_type;
else
elf_x86_64_local_got_tls_type (abfd) [r_symndx] = tls_type;
}
case R_X86_64_GOTPC32:
case R_X86_64_GOTPC64:
create_got:
+ if (eh != NULL)
+ eh->has_got_reloc = 1;
if (htab->elf.sgot == NULL)
{
if (htab->elf.dynobj == NULL)
if (h == NULL)
continue;
+ eh->has_got_reloc = 1;
h->needs_plt = 1;
h->plt.refcount += 1;
break;
case R_X86_64_PC64:
case R_X86_64_64:
pointer:
+ if (eh != NULL && (sec->flags & SEC_CODE) != 0)
+ eh->has_non_got_reloc = 1;
if (h != NULL && bfd_link_executable (info))
{
/* If this reloc is in a read-only section, we might
|| (!ABI_64_P (abfd)
&& (r_type == R_X86_64_32
|| r_type == R_X86_64_32S))))
- {
- struct elf_x86_64_link_hash_entry *eh
- = (struct elf_x86_64_link_hash_entry *) h;
- eh->func_pointer_refcount += 1;
- }
+ eh->func_pointer_refcount += 1;
}
}
/* If this is a global symbol, we count the number of
relocations we need for this symbol. */
if (h != NULL)
- {
- head = &((struct elf_x86_64_link_hash_entry *) h)->dyn_relocs;
- }
+ head = &eh->dyn_relocs;
else
{
/* Track dynamic relocs needed for local syms too.
return TRUE;
}
+/* Remove undefined weak symbol from the dynamic symbol table if it
+ is resolved to 0. */
+
+static bfd_boolean
+elf_x86_64_fixup_symbol (struct bfd_link_info *info,
+ struct elf_link_hash_entry *h)
+{
+ if (h->dynindx != -1
+ && UNDEFINED_WEAK_RESOLVED_TO_ZERO (info,
+ elf_x86_64_hash_entry (h)))
+ {
+ h->dynindx = -1;
+ _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
+ h->dynstr_index);
+ }
+ return TRUE;
+}
+
/* Adjust a symbol defined by a dynamic object and referenced by a
regular object. The current definition is in some section of the
dynamic object, but we're not including those sections. We have to
struct elf_dyn_relocs *p;
const struct elf_backend_data *bed;
unsigned int plt_entry_size;
+ bfd_boolean resolved_to_zero;
if (h->root.type == bfd_link_hash_indirect)
return TRUE;
bed = get_elf_backend_data (info->output_bfd);
plt_entry_size = GET_PLT_ENTRY_SIZE (info->output_bfd);
+ resolved_to_zero = UNDEFINED_WEAK_RESOLVED_TO_ZERO (info, eh);
+
/* We can't use the GOT PLT if pointer equality is needed since
finish_dynamic_symbol won't clear symbol value and the dynamic
linker won't update the GOT slot. We will get into an infinite
/* Make sure this symbol is output as a dynamic symbol.
Undefined weak syms won't yet be marked as dynamic. */
if (h->dynindx == -1
- && !h->forced_local)
+ && !h->forced_local
+ && !resolved_to_zero)
{
if (! bfd_elf_link_record_dynamic_symbol (info, h))
return FALSE;
script. */
htab->elf.sgotplt->size += GOT_ENTRY_SIZE;
- /* We also need to make an entry in the .rela.plt
- section. */
- htab->elf.srelplt->size += bed->s->sizeof_rela;
- htab->elf.srelplt->reloc_count++;
+ /* There should be no PLT relocation against resolved
+ undefined weak symbol in executable. */
+ if (!resolved_to_zero)
+ {
+ /* We also need to make an entry in the .rela.plt
+ section. */
+ htab->elf.srelplt->size += bed->s->sizeof_rela;
+ htab->elf.srelplt->reloc_count++;
+ }
}
}
else
/* Make sure this symbol is output as a dynamic symbol.
Undefined weak syms won't yet be marked as dynamic. */
if (h->dynindx == -1
- && !h->forced_local)
+ && !h->forced_local
+ && !resolved_to_zero)
{
if (! bfd_elf_link_record_dynamic_symbol (info, h))
return FALSE;
}
dyn = htab->elf.dynamic_sections_created;
/* R_X86_64_TLSGD needs one dynamic relocation if local symbol
- and two if global.
- R_X86_64_GOTTPOFF needs one dynamic relocation. */
+ and two if global. R_X86_64_GOTTPOFF needs one dynamic
+ relocation. No dynamic relocation against resolved undefined
+ weak symbol in executable. */
if ((GOT_TLS_GD_P (tls_type) && h->dynindx == -1)
|| tls_type == GOT_TLS_IE)
htab->elf.srelgot->size += bed->s->sizeof_rela;
else if (GOT_TLS_GD_P (tls_type))
htab->elf.srelgot->size += 2 * bed->s->sizeof_rela;
else if (! GOT_TLS_GDESC_P (tls_type)
- && (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
+ && ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
+ && !resolved_to_zero)
|| h->root.type != bfd_link_hash_undefweak)
&& (bfd_link_pic (info)
|| WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
}
/* Also discard relocs on undefined weak syms with non-default
- visibility. */
+ visibility or in PIE. */
if (eh->dyn_relocs != NULL)
{
if (h->root.type == bfd_link_hash_undefweak)
{
- if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
+ /* Undefined weak symbol is never bound locally in shared
+ library. */
+ if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
+ || resolved_to_zero)
eh->dyn_relocs = NULL;
-
- /* Make sure undefined weak symbols are output as a dynamic
- symbol in PIEs. */
else if (h->dynindx == -1
&& ! h->forced_local
&& ! bfd_elf_link_record_dynamic_symbol (info, h))
dynamic. Keep dynamic relocations for run-time function
pointer initialization. */
- if ((!h->non_got_ref || eh->func_pointer_refcount > 0)
+ if ((!h->non_got_ref
+ || eh->func_pointer_refcount > 0
+ || (h->root.type == bfd_link_hash_undefweak
+ && !resolved_to_zero))
&& ((h->def_dynamic
&& !h->def_regular)
|| (htab->elf.dynamic_sections_created
Undefined weak syms won't yet be marked as dynamic. */
if (h->dynindx == -1
&& ! h->forced_local
+ && ! resolved_to_zero
&& ! bfd_elf_link_record_dynamic_symbol (info, h))
return FALSE;
abort ();
s->size = htab->dynamic_interpreter_size;
s->contents = (unsigned char *) htab->dynamic_interpreter;
+ htab->interp = s;
}
}
int tls_type;
asection *base_got, *resolved_plt;
bfd_vma st_size;
+ bfd_boolean resolved_to_zero;
r_type = ELF32_R_TYPE (rel->r_info);
if (r_type == (int) R_X86_64_GNU_VTINHERIT
}
}
+ resolved_to_zero = (eh != NULL
+ && UNDEFINED_WEAK_RESOLVED_TO_ZERO (info, eh));
+
/* When generating a shared object, the relocations handled here are
copied into the output file to be resolved at run time. */
switch (r_type)
case R_X86_64_PC32:
case R_X86_64_PC32_BND:
/* Don't complain about -fPIC if the symbol is undefined when
- building executable. */
- if (bfd_link_pic (info)
- && (input_section->flags & SEC_ALLOC) != 0
+ building executable unless it is unresolved weak symbol. */
+ if ((input_section->flags & SEC_ALLOC) != 0
&& (input_section->flags & SEC_READONLY) != 0
&& h != NULL
- && !(bfd_link_executable (info)
- && h->root.type == bfd_link_hash_undefined))
+ && ((bfd_link_executable (info)
+ && h->root.type == bfd_link_hash_undefweak
+ && !resolved_to_zero)
+ || (bfd_link_pic (info)
+ && !(bfd_link_pie (info)
+ && h->root.type == bfd_link_hash_undefined))))
{
bfd_boolean fail = FALSE;
bfd_boolean branch
defined locally or for a branch. */
fail = !h->def_regular && !branch;
}
- else if (!(bfd_link_executable (info)
+ else if (!(bfd_link_pie (info)
&& (h->needs_copy || eh->needs_copy)))
{
/* Symbol doesn't need copy reloc and isn't referenced
/* Don't copy a pc-relative relocation into the output file
if the symbol needs copy reloc or the symbol is undefined
when building executable. Copy dynamic function pointer
- relocations. */
+ relocations. Don't generate dynamic relocations against
+ resolved undefined weak symbols in PIE. */
if ((bfd_link_pic (info)
- && !(bfd_link_executable (info)
+ && !(bfd_link_pie (info)
&& h != NULL
&& (h->needs_copy
|| eh->needs_copy
|| h->root.type == bfd_link_hash_undefined)
&& IS_X86_64_PCREL_TYPE (r_type))
&& (h == NULL
- || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
- || h->root.type != bfd_link_hash_undefweak)
+ || ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
+ && !resolved_to_zero)
+ || h->root.type != bfd_link_hash_undefweak))
&& ((! IS_X86_64_PCREL_TYPE (r_type)
&& r_type != R_X86_64_SIZE32
&& r_type != R_X86_64_SIZE64)
&& !bfd_link_pic (info)
&& h != NULL
&& h->dynindx != -1
- && (!h->non_got_ref || eh->func_pointer_refcount > 0)
+ && (!h->non_got_ref
+ || eh->func_pointer_refcount > 0
+ || (h->root.type == bfd_link_hash_undefweak
+ && !resolved_to_zero))
&& ((h->def_dynamic
&& !h->def_regular)
|| h->root.type == bfd_link_hash_undefweak
|| ! SYMBOLIC_BIND (info, h)
|| ! h->def_regular))
{
+ if ((r_type != R_X86_64_PC64 && r_type != R_X86_64_64)
+ && bfd_link_executable (info)
+ && h->root.type == bfd_link_hash_undefweak
+ && !resolved_to_zero)
+ return elf_x86_64_need_pic (input_bfd, h, howto);
outrel.r_info = htab->r_info (h->dynindx, r_type);
outrel.r_addend = rel->r_addend;
}
elf_x86_64_finish_dynamic_symbol (bfd *output_bfd,
struct bfd_link_info *info,
struct elf_link_hash_entry *h,
- Elf_Internal_Sym *sym ATTRIBUTE_UNUSED)
+ Elf_Internal_Sym *sym)
{
struct elf_x86_64_link_hash_table *htab;
const struct elf_x86_64_backend_data *abed;
bfd_boolean use_plt_bnd;
struct elf_x86_64_link_hash_entry *eh;
+ bfd_boolean local_undefweak;
htab = elf_x86_64_hash_table (info);
if (htab == NULL)
eh = (struct elf_x86_64_link_hash_entry *) h;
+ /* We keep PLT/GOT entries without dynamic PLT/GOT relocations for
+ resolved undefined weak symbols in executable so that their
+ references have value 0 at run-time. */
+ local_undefweak = UNDEFINED_WEAK_RESOLVED_TO_ZERO (info, eh);
+
if (h->plt.offset != (bfd_vma) -1)
{
bfd_vma plt_index;
/* This symbol has an entry in the procedure linkage table. Set
it up. */
if ((h->dynindx == -1
+ && !local_undefweak
&& !((h->forced_local || bfd_link_executable (info))
&& h->def_regular
&& h->type == STT_GNU_IFUNC))
resolved_plt->contents + plt_offset + plt_got_offset);
/* Fill in the entry in the global offset table, initially this
- points to the second part of the PLT entry. */
- bfd_put_64 (output_bfd, (plt->output_section->vma
- + plt->output_offset
- + h->plt.offset + abed->plt_lazy_offset),
- gotplt->contents + got_offset);
-
- /* Fill in the entry in the .rela.plt section. */
- rela.r_offset = (gotplt->output_section->vma
- + gotplt->output_offset
- + got_offset);
- if (h->dynindx == -1
- || ((bfd_link_executable (info)
- || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
- && h->def_regular
- && h->type == STT_GNU_IFUNC))
+ points to the second part of the PLT entry. Leave the entry
+ as zero for undefined weak symbol in PIE. No PLT relocation
+ against undefined weak symbol in PIE. */
+ if (!local_undefweak)
{
- /* If an STT_GNU_IFUNC symbol is locally defined, generate
- R_X86_64_IRELATIVE instead of R_X86_64_JUMP_SLOT. */
- rela.r_info = htab->r_info (0, R_X86_64_IRELATIVE);
- rela.r_addend = (h->root.u.def.value
- + h->root.u.def.section->output_section->vma
- + h->root.u.def.section->output_offset);
- /* R_X86_64_IRELATIVE comes last. */
- plt_index = htab->next_irelative_index--;
- }
- else
- {
- rela.r_info = htab->r_info (h->dynindx, R_X86_64_JUMP_SLOT);
- rela.r_addend = 0;
- plt_index = htab->next_jump_slot_index++;
- }
+ bfd_put_64 (output_bfd, (plt->output_section->vma
+ + plt->output_offset
+ + h->plt.offset
+ + abed->plt_lazy_offset),
+ gotplt->contents + got_offset);
+
+ /* Fill in the entry in the .rela.plt section. */
+ rela.r_offset = (gotplt->output_section->vma
+ + gotplt->output_offset
+ + got_offset);
+ if (h->dynindx == -1
+ || ((bfd_link_executable (info)
+ || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
+ && h->def_regular
+ && h->type == STT_GNU_IFUNC))
+ {
+ /* If an STT_GNU_IFUNC symbol is locally defined, generate
+ R_X86_64_IRELATIVE instead of R_X86_64_JUMP_SLOT. */
+ rela.r_info = htab->r_info (0, R_X86_64_IRELATIVE);
+ rela.r_addend = (h->root.u.def.value
+ + h->root.u.def.section->output_section->vma
+ + h->root.u.def.section->output_offset);
+ /* R_X86_64_IRELATIVE comes last. */
+ plt_index = htab->next_irelative_index--;
+ }
+ else
+ {
+ rela.r_info = htab->r_info (h->dynindx, R_X86_64_JUMP_SLOT);
+ rela.r_addend = 0;
+ plt_index = htab->next_jump_slot_index++;
+ }
- /* Don't fill PLT entry for static executables. */
- if (plt == htab->elf.splt)
- {
- bfd_vma plt0_offset = h->plt.offset + plt_plt_insn_end;
-
- /* Put relocation index. */
- bfd_put_32 (output_bfd, plt_index,
- plt->contents + h->plt.offset + abed->plt_reloc_offset);
-
- /* Put offset for jmp .PLT0 and check for overflow. We don't
- check relocation index for overflow since branch displacement
- will overflow first. */
- if (plt0_offset > 0x80000000)
- info->callbacks->einfo (_("%F%B: branch displacement overflow in PLT entry for `%s'\n"),
- output_bfd, h->root.root.string);
- bfd_put_32 (output_bfd, - plt0_offset,
- plt->contents + h->plt.offset + plt_plt_offset);
- }
+ /* Don't fill PLT entry for static executables. */
+ if (plt == htab->elf.splt)
+ {
+ bfd_vma plt0_offset = h->plt.offset + plt_plt_insn_end;
+
+ /* Put relocation index. */
+ bfd_put_32 (output_bfd, plt_index,
+ (plt->contents + h->plt.offset
+ + abed->plt_reloc_offset));
+
+ /* Put offset for jmp .PLT0 and check for overflow. We don't
+ check relocation index for overflow since branch displacement
+ will overflow first. */
+ if (plt0_offset > 0x80000000)
+ info->callbacks->einfo (_("%F%B: branch displacement overflow in PLT entry for `%s'\n"),
+ output_bfd, h->root.root.string);
+ bfd_put_32 (output_bfd, - plt0_offset,
+ plt->contents + h->plt.offset + plt_plt_offset);
+ }
- bed = get_elf_backend_data (output_bfd);
- loc = relplt->contents + plt_index * bed->s->sizeof_rela;
- bed->s->swap_reloca_out (output_bfd, &rela, loc);
+ bed = get_elf_backend_data (output_bfd);
+ loc = relplt->contents + plt_index * bed->s->sizeof_rela;
+ bed->s->swap_reloca_out (output_bfd, &rela, loc);
+ }
}
else if (eh->plt_got.offset != (bfd_vma) -1)
{
plt->contents + plt_offset + plt_got_offset);
}
- if (!h->def_regular
+ if (!local_undefweak
+ && !h->def_regular
&& (h->plt.offset != (bfd_vma) -1
|| eh->plt_got.offset != (bfd_vma) -1))
{
sym->st_value = 0;
}
+ /* Don't generate dynamic GOT relocation against undefined weak
+ symbol in executable. */
if (h->got.offset != (bfd_vma) -1
&& ! GOT_TLS_GD_ANY_P (elf_x86_64_hash_entry (h)->tls_type)
- && elf_x86_64_hash_entry (h)->tls_type != GOT_TLS_IE)
+ && elf_x86_64_hash_entry (h)->tls_type != GOT_TLS_IE
+ && !local_undefweak)
{
Elf_Internal_Rela rela;
info, h, NULL);
}
+/* Finish up undefined weak symbol handling in PIE. Fill its PLT entry
+ here since undefined weak symbol may not be dynamic and may not be
+ called for elf_x86_64_finish_dynamic_symbol. */
+
+static bfd_boolean
+elf_x86_64_pie_finish_undefweak_symbol (struct bfd_hash_entry *bh,
+ void *inf)
+{
+ struct elf_link_hash_entry *h = (struct elf_link_hash_entry *) bh;
+ struct bfd_link_info *info = (struct bfd_link_info *) inf;
+
+ if (h->root.type != bfd_link_hash_undefweak
+ || h->dynindx != -1)
+ return TRUE;
+
+ return elf_x86_64_finish_dynamic_symbol (info->output_bfd,
+ info, h, NULL);
+}
+
/* Used to decide how to sort relocs in an optimal manner for the
dynamic linker, before writing them out. */
elf_x86_64_finish_local_dynamic_symbol,
info);
+ /* Fill PLT entries for undefined weak symbols in PIE. */
+ if (bfd_link_pie (info))
+ bfd_hash_traverse (&info->hash->table,
+ elf_x86_64_pie_finish_undefweak_symbol,
+ info);
+
return TRUE;
}
elf_x86_64_hash_symbol
#define elf_backend_omit_section_dynsym \
((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
+#define elf_backend_fixup_symbol \
+ elf_x86_64_fixup_symbol
#include "elf64-target.h"
+2016-02-26 H.J. Lu <hongjiu.lu@intel.com>
+
+ PR ld/19636
+ PR ld/19704
+ PR ld/19719
+ * bfdlink.h (bfd_link_info): Add dynamic_undefined_weak.
+
2016-02-19 Matthew Wahab <matthew.wahab@arm.com>
Jiong Wang <jiong.wang@arm.com>
backend to decide. */
int extern_protected_data;
+ /* > 0 to treat undefined weak symbol in the executable as dynamic,
+ requiring dynamic relocation. */
+ int dynamic_undefined_weak;
+
/* Non-zero if auto-import thunks for DATA items in pei386 DLLs
should be generated/linked against. Set to 1 if this feature
is explicitly requested by the user, -1 if enabled by default. */
+2016-02-26 H.J. Lu <hongjiu.lu@intel.com>
+
+ PR ld/19636
+ PR ld/19704
+ PR ld/19719
+ * Makefile.am (ELF_X86_DEPS): Add dynamic_undefined_weak.sh.
+ * Makefile.in: Regenerated.
+ * NEWS: Mention -z nodynamic-undefined-weak.
+ * ld.texinfo: Document -z nodynamic-undefined-weak.
+ * ldmain.c (main): Initialize dynamic_undefined_weak to -1.
+ * emulparams/dynamic_undefined_weak.sh: New file.
+ * emulparams/elf32_x86_64.sh: Source dynamic_undefined_weak.sh.
+ * emulparams/elf_i386.sh: Likewise.
+ * emulparams/elf_i386_be.sh: Likewise.
+ * emulparams/elf_i386_chaos.sh: Likewise.
+ * emulparams/elf_i386_ldso.sh: Likewise.
+ * emulparams/elf_i386_vxworks.sh: Likewise.
+ * emulparams/elf_iamcu.sh: Likewise.
+ * emulparams/elf_k1om.sh: Likewise.
+ * emulparams/elf_l1om.sh: Likewise.
+ * emulparams/elf_x86_64.sh: Likewise.
+ * emulparams/extern_protected_data.sh (PARSE_AND_LIST_OPTIONS):
+ Append.
+ (PARSE_AND_LIST_ARGS_CASE_Z): Likewise.
+ * testsuite/ld-elf/pr19719a.c: New file.
+ * testsuite/ld-elf/pr19719b.c: Likewise.
+ * testsuite/ld-elf/pr19719c.c: Likewise.
+ * testsuite/ld-elf/pr19719d.c: Likewise.
+ * testsuite/ld-i386/pr19636-1.s: Likewise.
+ * testsuite/ld-i386/pr19636-1a.d: Likewise.
+ * testsuite/ld-i386/pr19636-1b.d: Likewise.
+ * testsuite/ld-i386/pr19636-1c.d: Likewise.
+ * testsuite/ld-i386/pr19636-1d-nacl.d: Likewise.
+ * testsuite/ld-i386/pr19636-1d.d: Likewise.
+ * testsuite/ld-i386/pr19636-1e.d: Likewise.
+ * testsuite/ld-i386/pr19636-1f.d: Likewise.
+ * testsuite/ld-i386/pr19636-1g.d: Likewise.
+ * testsuite/ld-i386/pr19636-1h.d: Likewise.
+ * testsuite/ld-i386/pr19636-1i.d: Likewise.
+ * testsuite/ld-i386/pr19636-2.s: Likewise.
+ * testsuite/ld-i386/pr19636-2a.d: Likewise.
+ * testsuite/ld-i386/pr19636-2b.d: Likewise.
+ * testsuite/ld-i386/pr19636-2c-nacl.d: Likewise.
+ * testsuite/ld-i386/pr19636-2c.d: Likewise.
+ * testsuite/ld-i386/pr19636-2d-nacl.d: Likewise.
+ * testsuite/ld-i386/pr19636-2d.d: Likewise.
+ * testsuite/ld-i386/pr19636-2e-nacl.d: Likewise.
+ * testsuite/ld-i386/pr19636-2e.d: Likewise.
+ * testsuite/ld-i386/pr19636-3.s: Likewise.
+ * testsuite/ld-i386/pr19636-3a.d: Likewise.
+ * testsuite/ld-i386/pr19636-3b.d: Likewise.
+ * testsuite/ld-i386/pr19636-3c.d: Likewise.
+ * testsuite/ld-i386/pr19636-3d.d: Likewise.
+ * testsuite/ld-i386/pr19636-3e.d: Likewise.
+ * testsuite/ld-i386/pr19636-3f.d: Likewise.
+ * testsuite/ld-i386/pr19636-3g.d: Likewise.
+ * testsuite/ld-i386/pr19636-4.s: Likewise.
+ * testsuite/ld-i386/pr19636-4a.d: Likewise.
+ * testsuite/ld-i386/pr19636-4b.d: Likewise.
+ * testsuite/ld-i386/pr19636-4c.d: Likewise.
+ * testsuite/ld-i386/pr19636-4d.d: Likewise.
+ * testsuite/ld-i386/pr19704.out: Likewise.
+ * testsuite/ld-i386/pr19704a.c: Likewise.
+ * testsuite/ld-i386/pr19704b.c: Likewise.
+ * testsuite/ld-x86-64/pr19636-1.s: Likewise.
+ * testsuite/ld-x86-64/pr19636-1a.d: Likewise.
+ * testsuite/ld-x86-64/pr19636-1b.d: Likewise.
+ * testsuite/ld-x86-64/pr19636-1c.d: Likewise.
+ * testsuite/ld-x86-64/pr19636-1d.d: Likewise.
+ * testsuite/ld-x86-64/pr19636-1e.d: Likewise.
+ * testsuite/ld-x86-64/pr19636-1f.d: Likewise.
+ * testsuite/ld-x86-64/pr19636-1g.d: Likewise.
+ * testsuite/ld-x86-64/pr19636-2.s: Likewise.
+ * testsuite/ld-x86-64/pr19636-2a.d: Likewise.
+ * testsuite/ld-x86-64/pr19636-2b.d: Likewise.
+ * testsuite/ld-x86-64/pr19636-2c.d: Likewise.
+ * testsuite/ld-x86-64/pr19636-2d-nacl.d: Likewise.
+ * testsuite/ld-x86-64/pr19636-2d.d: Likewise.
+ * testsuite/ld-x86-64/pr19636-2e.d: Likewise.
+ * testsuite/ld-x86-64/pr19636-2f.d: Likewise.
+ * testsuite/ld-x86-64/pr19636-2g.d: Likewise.
+ * testsuite/ld-x86-64/pr19636-2h.d: Likewise.
+ * testsuite/ld-x86-64/pr19636-2i.d: Likewise.
+ * testsuite/ld-x86-64/pr19636-3.s: Likewise.
+ * testsuite/ld-x86-64/pr19636-3a.d: Likewise.
+ * testsuite/ld-x86-64/pr19636-3b.d: Likewise.
+ * testsuite/ld-x86-64/pr19636-3c.d: Likewise.
+ * testsuite/ld-x86-64/pr19636-3d.d: Likewise.
+ * testsuite/ld-x86-64/pr19704.out: Likewise.
+ * testsuite/ld-x86-64/pr19704a.c: Likewise.
+ * testsuite/ld-x86-64/pr19704b.c: Likewise.
+ * testsuite/ld-elf/shared.exp (mix_pic_and_non_pic): New.
+ Run mix_pic_and_non_pic.
+ * testsuite/ld-i386/i386.exp (undefined_weak): New.
+ Run undefined_weak and PR ld/19636 tests.
+ * testsuite/ld-x86-64/x86-64.exp: Likewise.
+ * testsuite/ld-x86-64/pr13082-3b.d: Updated.
+ * testsuite/ld-x86-64/pr13082-4b.d: Likewise.
+
2016-02-25 Nick Clifton <nickc@redhat.com>
* ld.h (struct ld_config_type): Remove specified_data_size field.
ELF_GEN_DEPS = $(srcdir)/emultempl/generic.em $(srcdir)/emultempl/elf-generic.em $(srcdir)/emultempl/genelf.em $(srcdir)/scripttempl/DWARF.sc
ELF_X86_DEPS = $(ELF_DEPS) $(srcdir)/emulparams/plt_unwind.sh \
$(srcdir)/emulparams/extern_protected_data.sh \
+ $(srcdir)/emulparams/dynamic_undefined_weak.sh \
$(srcdir)/emulparams/call_nop.sh
@TDIRS@
ELF_GEN_DEPS = $(srcdir)/emultempl/generic.em $(srcdir)/emultempl/elf-generic.em $(srcdir)/emultempl/genelf.em $(srcdir)/scripttempl/DWARF.sc
ELF_X86_DEPS = $(ELF_DEPS) $(srcdir)/emulparams/plt_unwind.sh \
$(srcdir)/emulparams/extern_protected_data.sh \
+ $(srcdir)/emulparams/dynamic_undefined_weak.sh \
$(srcdir)/emulparams/call_nop.sh
-*- text -*-
+* Support for -z nodynamic-undefined-weak in the x86 ELF linker, which
+ avoids dynamic relocations against undefined weak symbols in executable.
+
Changes in 2.26:
* Add --fix-stm32l4xx-629360 to the ARM linker to enable a link-time
--- /dev/null
+PARSE_AND_LIST_OPTIONS_NODYNAMIC_UNDEFINED_WEAK='
+ fprintf (file, _("\
+ -z nodynamic-undefined-weak Do not treat undefined weak symbol as dynamic\n"));
+'
+
+PARSE_AND_LIST_ARGS_CASE_Z_NODYNAMIC_UNDEFINED_WEAK='
+ else if (strcmp (optarg, "nodynamic-undefined-weak") == 0)
+ link_info.dynamic_undefined_weak = FALSE;
+'
+
+PARSE_AND_LIST_OPTIONS="$PARSE_AND_LIST_OPTIONS $PARSE_AND_LIST_OPTIONS_NODYNAMIC_UNDEFINED_WEAK"
+PARSE_AND_LIST_ARGS_CASE_Z="$PARSE_AND_LIST_ARGS_CASE_Z $PARSE_AND_LIST_ARGS_CASE_Z_NODYNAMIC_UNDEFINED_WEAK"
. ${srcdir}/emulparams/plt_unwind.sh
. ${srcdir}/emulparams/extern_protected_data.sh
+. ${srcdir}/emulparams/dynamic_undefined_weak.sh
. ${srcdir}/emulparams/call_nop.sh
SCRIPT_NAME=elf
ELFSIZE=32
. ${srcdir}/emulparams/plt_unwind.sh
. ${srcdir}/emulparams/extern_protected_data.sh
+. ${srcdir}/emulparams/dynamic_undefined_weak.sh
. ${srcdir}/emulparams/call_nop.sh
SCRIPT_NAME=elf
OUTPUT_FORMAT="elf32-i386"
. ${srcdir}/emulparams/extern_protected_data.sh
+. ${srcdir}/emulparams/dynamic_undefined_weak.sh
. ${srcdir}/emulparams/call_nop.sh
SCRIPT_NAME=elf
OUTPUT_FORMAT="elf32-i386"
. ${srcdir}/emulparams/plt_unwind.sh
. ${srcdir}/emulparams/extern_protected_data.sh
+. ${srcdir}/emulparams/dynamic_undefined_weak.sh
. ${srcdir}/emulparams/call_nop.sh
SCRIPT_NAME=elf_chaos
OUTPUT_FORMAT="elf32-i386"
. ${srcdir}/emulparams/plt_unwind.sh
. ${srcdir}/emulparams/extern_protected_data.sh
+. ${srcdir}/emulparams/dynamic_undefined_weak.sh
. ${srcdir}/emulparams/call_nop.sh
SCRIPT_NAME=elf
OUTPUT_FORMAT="elf32-i386"
NO_SMALL_DATA=yes
. ${srcdir}/emulparams/vxworks.sh
. ${srcdir}/emulparams/extern_protected_data.sh
+. ${srcdir}/emulparams/dynamic_undefined_weak.sh
. ${srcdir}/emulparams/call_nop.sh
. ${srcdir}/emulparams/plt_unwind.sh
. ${srcdir}/emulparams/extern_protected_data.sh
+. ${srcdir}/emulparams/dynamic_undefined_weak.sh
. ${srcdir}/emulparams/call_nop.sh
SCRIPT_NAME=elf
OUTPUT_FORMAT="elf32-iamcu"
. ${srcdir}/emulparams/plt_unwind.sh
. ${srcdir}/emulparams/extern_protected_data.sh
+. ${srcdir}/emulparams/dynamic_undefined_weak.sh
. ${srcdir}/emulparams/call_nop.sh
SCRIPT_NAME=elf
ELFSIZE=64
. ${srcdir}/emulparams/plt_unwind.sh
. ${srcdir}/emulparams/extern_protected_data.sh
+. ${srcdir}/emulparams/dynamic_undefined_weak.sh
. ${srcdir}/emulparams/call_nop.sh
SCRIPT_NAME=elf
ELFSIZE=64
. ${srcdir}/emulparams/plt_unwind.sh
. ${srcdir}/emulparams/extern_protected_data.sh
+. ${srcdir}/emulparams/dynamic_undefined_weak.sh
. ${srcdir}/emulparams/call_nop.sh
SCRIPT_NAME=elf
ELFSIZE=64
-PARSE_AND_LIST_OPTIONS='
+PARSE_AND_LIST_OPTIONS_NOEXTEN_PROTECTED_DATA='
fprintf (file, _("\
-z noextern-protected-data Do not treat protected data symbol as external\n"));
'
-PARSE_AND_LIST_ARGS_CASE_Z='
+PARSE_AND_LIST_ARGS_CASE_Z_NOEXTEN_PROTECTED_DATA='
else if (strcmp (optarg, "noextern-protected-data") == 0)
link_info.extern_protected_data = FALSE;
'
+
+
+PARSE_AND_LIST_OPTIONS="$PARSE_AND_LIST_OPTIONS $PARSE_AND_LIST_OPTIONS_NOEXTEN_PROTECTED_DATA"
+PARSE_AND_LIST_ARGS_CASE_Z="$PARSE_AND_LIST_ARGS_CASE_Z $PARSE_AND_LIST_ARGS_CASE_Z_NOEXTEN_PROTECTED_DATA"
module aren't visible to the resulting shared library. Supported for
i386 and x86-64.
+@item nodynamic-undefined-weak
+Don't treat undefined weak symbols as dynamic when building executable.
+This option overrides linker backend default. It can be used to avoid
+dynamic relocations against undefined weak symbols in executable.
+Supported for i386 and x86-64.
+
@item call-nop=prefix-addr
@itemx call-nop=prefix-nop
@itemx call-nop=suffix-nop
link_info.fini_function = "_fini";
link_info.relax_pass = 1;
link_info.extern_protected_data = -1;
+ link_info.dynamic_undefined_weak = -1;
link_info.pei386_auto_import = -1;
link_info.spare_dynamic_tags = 5;
link_info.path_separator = ':';
--- /dev/null
+#include <stdio.h>
+
+extern int foo (void);
+extern int bar (void);
+
+int
+main (void)
+{
+ if (foo () == bar ())
+ printf ("PASS\n");
+ return 0;
+}
--- /dev/null
+extern int __attribute__ ((weak)) fun (void);
+int
+foo (void)
+{
+ if (&fun != 0)
+ return fun ();
+ return 0;
+}
--- /dev/null
+extern int __attribute__ ((weak)) fun (void);
+int
+bar (void)
+{
+ if (&fun != 0)
+ return fun ();
+ return 0;
+}
--- /dev/null
+int
+fun (void)
+{
+ return 20;
+}
] \
]
}
+
+proc mix_pic_and_non_pic {cflags ldflags} {
+ set testname "Mixing PIC and non-PIC"
+ if { ![ string match "" $cflags$ldflags] } {
+ set testname "$testname ($cflags $ldflags)"
+ }
+
+ run_cc_link_tests [list \
+ [list \
+ "Build libpr19719a.so" \
+ "-shared -Wl,-soname,libpr19719.so" \
+ "-fPIC" \
+ { pr19719d.c } \
+ {} \
+ "libpr19719a.so" \
+ ] \
+ [list \
+ "Build libpr19719b.so" \
+ "-shared -Wl,-soname,libpr19719.so" \
+ "-fPIC" \
+ { dummy.c } \
+ {} \
+ "libpr19719b.so" \
+ ] \
+ [list \
+ "Build pr19073b.o" \
+ "-r -nostdlib" \
+ "-fPIC" \
+ { pr19719b.c } \
+ {} \
+ "libpr19719b.o" \
+ ] \
+ ]
+
+ exec cp tmpdir/libpr19719b.so tmpdir/libpr19719.so
+
+ run_ld_link_exec_tests [] [list \
+ [list \
+ "Run pr19719" \
+ "$ldflags tmpdir/libpr19719b.o tmpdir/libpr19719.so -R tmpdir" \
+ "" \
+ { pr19719a.c pr19719c.c } \
+ "pr19719" \
+ "pass.out" \
+ "$cflags" \
+ ] \
+ ]
+
+ exec cp tmpdir/libpr19719a.so tmpdir/libpr19719.so
+
+ set exec_output [run_host_cmd tmpdir/pr19719 ""]
+ if {![string match "PASS" $exec_output]} {
+ fail $testname
+ } else {
+ pass $testname
+ }
+}
+
+mix_pic_and_non_pic "" ""
+mix_pic_and_non_pic "-fPIE" "-pie"
run_dump_test "load6"
run_dump_test "pr19175"
run_dump_test "pr19615"
+run_dump_test "pr19636-1a"
+run_dump_test "pr19636-1b"
+run_dump_test "pr19636-1c"
+run_dump_test "pr19636-1d"
+run_dump_test "pr19636-1d-nacl"
+run_dump_test "pr19636-1e"
+run_dump_test "pr19636-1f"
+run_dump_test "pr19636-1g"
+run_dump_test "pr19636-1h"
+run_dump_test "pr19636-1i"
+run_dump_test "pr19636-2a"
+run_dump_test "pr19636-2b"
+run_dump_test "pr19636-2c"
+run_dump_test "pr19636-2c-nacl"
+run_dump_test "pr19636-2d"
+run_dump_test "pr19636-2d-nacl"
+run_dump_test "pr19636-2e"
+run_dump_test "pr19636-2e-nacl"
+run_dump_test "pr19636-3a"
+run_dump_test "pr19636-3b"
+run_dump_test "pr19636-3c"
+run_dump_test "pr19636-3d"
+run_dump_test "pr19636-3e"
+run_dump_test "pr19636-3f"
+run_dump_test "pr19636-3g"
+run_dump_test "pr19636-4a"
+run_dump_test "pr19636-4b"
+run_dump_test "pr19636-4c"
+run_dump_test "pr19636-4d"
if { !([istarget "i?86-*-linux*"]
|| [istarget "i?86-*-gnu*"]
run_dump_test "pr18801"
run_dump_test "pr18815"
+proc undefined_weak {cflags ldflags} {
+ set testname "Undefined weak symbol"
+ if { ![ string match "" $cflags$ldflags] } {
+ set testname "$testname ($cflags $ldflags)"
+ }
+
+ if { [ regexp "\-fPIE" $cflags]
+ && ![ regexp "\-z nodynamic-undefined-weak" $ldflags] } {
+ set weak_symbol "Weak defined"
+ } else {
+ set weak_symbol "Weak undefined"
+ }
+
+ run_cc_link_tests [list \
+ [list \
+ "Build libpr19704a.so" \
+ "-shared -Wl,-soname,libpr19704.so" \
+ "" \
+ { dummy.s } \
+ {} \
+ "libpr19704a.so" \
+ ] \
+ [list \
+ "Build libpr19704b.so" \
+ "-shared -Wl,-soname,libpr19704.so" \
+ "-fPIC" \
+ { pr19704b.c } \
+ {} \
+ "libpr19704b.so" \
+ ] \
+ ]
+
+ exec cp tmpdir/libpr19704a.so tmpdir/libpr19704.so
+
+ run_ld_link_exec_tests [] [list \
+ [list \
+ "Run pr19704" \
+ "$ldflags tmpdir/libpr19704.so -R tmpdir" \
+ "" \
+ { pr19704a.c } \
+ "pr19704" \
+ "pr19704.out" \
+ "$cflags" \
+ ] \
+ ]
+
+ exec cp tmpdir/libpr19704b.so tmpdir/libpr19704.so
+
+ set exec_output [run_host_cmd tmpdir/pr19704 ""]
+ if {![string match $weak_symbol $exec_output]} {
+ fail $testname
+ } else {
+ pass $testname
+ }
+}
+
# Add $PLT_CFLAGS if PLT is expected.
global PLT_CFLAGS
"got1.out" \
] \
]
+
+ undefined_weak "" ""
+ undefined_weak "-fPIE" ""
+ undefined_weak "-fPIE" "-pie"
+ undefined_weak "-fPIE" "-z nodynamic-undefined-weak"
+ undefined_weak "-fPIE" "-pie -z nodynamic-undefined-weak"
}
if { !([istarget "i?86-*-linux*"]
--- /dev/null
+ .text
+ .weak func1
+ .weak func2
+ .weak func3
+ .globl _start
+_start:
+ cmp func1@GOT(%eax), %eax
+ jmp *func2@GOT(%eax)
+ call func3@PLT
--- /dev/null
+#source: pr19636-1.s
+#as: --32 -mrelax-relocations=no
+#ld: -pie -m elf_i386 --no-dynamic-linker
+#readelf : -r --wide -x .got -x .got.plt --dyn-syms
+
+There are no relocations in this file.
+
+Symbol table '\.dynsym' contains 1 entries:
+ +Num: +Value +Size Type +Bind +Vis +Ndx Name
+ +0: 0+ +0 +NOTYPE +LOCAL +DEFAULT +UND +
+
+Hex dump of section '.got':
+ 0x[0-9a-f]+ [0 ]+\.+
+
+Hex dump of section '.got.plt':
+ 0x[0-9a-f]+ +[0-9a-f]+ +[0 ]+ .\.+
--- /dev/null
+#source: pr19636-1.s
+#as: --32 -mrelax-relocations=no
+#ld: -pie -E -m elf_i386 --no-dynamic-linker
+#readelf : -r --wide -x .got -x .got.plt --dyn-syms
+
+There are no relocations in this file.
+
+Symbol table '\.dynsym' contains [0-9]+ entries:
+ +Num: +Value +Size Type +Bind +Vis +Ndx Name
+ +0: 0+ +0 +NOTYPE +LOCAL +DEFAULT +UND +
+#...
+ +[0-9]+: +[a-f0-9]+ +0 +NOTYPE +GLOBAL +DEFAULT +[0-9]+ +_start
+#...
+
+Hex dump of section '.got':
+ 0x[0-9a-f]+ [0 ]+\.+
+
+Hex dump of section '.got.plt':
+ 0x[0-9a-f]+ +[0-9a-f]+ +[0 ]+ .\.+
--- /dev/null
+#source: pr19636-1.s
+#as: --32 -mrelax-relocations=no
+#ld: -pie -E -m elf_i386 --no-dynamic-linker
+#readelf : --wide --dyn-syms
+
+#failif
+#...
+ +[0-9]+: +[a-f0-9]+ +0 +NOTYPE +WEAK +DEFAULT +UND +func[0-9]?
+#...
--- /dev/null
+#source: pr19636-1.s
+#as: --32 -mrelax-relocations=no
+#ld: -pie -m elf_i386 --no-dynamic-linker
+#objdump: -dw
+#target: i?86-*-nacl* x86_64-*-nacl*
+
+.*: +file format .*
+
+
+Disassembly of section .plt:
+
+0+ <.plt>:
+[ ]*[a-f0-9]+: ff 73 04 pushl 0x4\(%ebx\)
+[ ]*[a-f0-9]+: 8b 4b 08 mov 0x8\(%ebx\),%ecx
+[ ]*[a-f0-9]+: 83 e1 e0 and \$0xffffffe0,%ecx
+[ ]*[a-f0-9]+: ff e1 jmp \*%ecx
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 8b 8b 0c 00 00 00 mov 0xc\(%ebx\),%ecx
+[ ]*[a-f0-9]+: 83 e1 e0 and \$0xffffffe0,%ecx
+[ ]*[a-f0-9]+: ff e1 jmp \*%ecx
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 68 00 00 00 00 push \$0x0
+[ ]*[a-f0-9]+: e9 00 00 00 00 jmp 6a <_start-0x16>
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+
+Disassembly of section .text:
+
+0+80 <_start>:
+[ ]*[a-f0-9]+: 3b 80 f8 ff ff ff cmp -0x8\(%eax\),%eax
+[ ]*[a-f0-9]+: ff a0 fc ff ff ff jmp \*-0x4\(%eax\)
+[ ]*[a-f0-9]+: e8 af ff ff ff call 40 <_start-0x40>
--- /dev/null
+#source: pr19636-1.s
+#as: --32 -mrelax-relocations=no
+#ld: -pie -m elf_i386 --no-dynamic-linker
+#objdump: -dw
+#notarget: i?86-*-nacl* x86_64-*-nacl*
+
+.*: +file format .*
+
+
+Disassembly of section .plt:
+
+0+c0 <.plt>:
+[ ]*[a-f0-9]+: ff b3 04 00 00 00 pushl 0x4\(%ebx\)
+[ ]*[a-f0-9]+: ff a3 08 00 00 00 jmp \*0x8\(%ebx\)
+[ ]*[a-f0-9]+: 00 00 add %al,\(%eax\)
+[ ]*[a-f0-9]+: 00 00 add %al,\(%eax\)
+[ ]*[a-f0-9]+: ff a3 0c 00 00 00 jmp \*0xc\(%ebx\)
+[ ]*[a-f0-9]+: 68 00 00 00 00 push \$0x0
+[ ]*[a-f0-9]+: e9 00 00 00 00 jmp [a-f0-9]+ <.*>
+
+Disassembly of section .text:
+
+0+e0 <_start>:
+[ ]*[a-f0-9]+: 3b 80 f8 ff ff ff cmp -0x8\(%eax\),%eax
+[ ]*[a-f0-9]+: ff a0 fc ff ff ff jmp \*-0x4\(%eax\)
+[ ]*[a-f0-9]+: e8 df ff ff ff call d0 <_start-0x10>
--- /dev/null
+#source: pr19636-1.s
+#as: --32 -mrelax-relocations=no
+#ld: -shared -m elf_i386 --no-dynamic-linker
+#readelf : -r --wide --dyn-syms
+
+Relocation section '\.rel\.dyn' at offset [0x0-9a-f]+ contains 2 entries:
+ +Offset +Info +Type +Sym. Value +Symbol's Name
+[0-9a-f]+ +[0-9a-f]+ +R_386_GLOB_DAT +0+ +func1
+[0-9a-f]+ +[0-9a-f]+ +R_386_GLOB_DAT +0+ +func2
+
+Relocation section '\.rel\.plt' at offset 0x[0-9a-f]+ contains 1 entries:
+ +Offset +Info +Type +Sym. Value +Symbol's Name
+[0-9a-f]+ +[0-9a-f]+ +R_386_JUMP_SLOT +0+ +func3
+
+Symbol table '\.dynsym' contains [0-9]+ entries:
+ +Num: +Value +Size Type +Bind +Vis +Ndx Name
+#...
+ +[0-9]+: +[a-f0-9]+ +0 +NOTYPE +WEAK +DEFAULT +UND +func[0-9]?
+#pass
--- /dev/null
+#source: pr19636-1.s
+#as: --32 -mrelax-relocations=no
+#ld: -shared -Bsymbolic -m elf_i386 --no-dynamic-linker
+#readelf : -r --wide --dyn-syms
+
+Relocation section '\.rel\.dyn' at offset [0x0-9a-f]+ contains 2 entries:
+ +Offset +Info +Type +Sym. Value +Symbol's Name
+[0-9a-f]+ +[0-9a-f]+ +R_386_GLOB_DAT +0+ +func1
+[0-9a-f]+ +[0-9a-f]+ +R_386_GLOB_DAT +0+ +func2
+
+Relocation section '\.rel\.plt' at offset 0x[0-9a-f]+ contains 1 entries:
+ +Offset +Info +Type +Sym. Value +Symbol's Name
+[0-9a-f]+ +[0-9a-f]+ +R_386_JUMP_SLOT +0+ +func3
+
+Symbol table '\.dynsym' contains [0-9]+ entries:
+ +Num: +Value +Size Type +Bind +Vis +Ndx Name
+#...
+ +[0-9]+: +[a-f0-9]+ +0 +NOTYPE +WEAK +DEFAULT +UND +func[0-9]?
+#pass
--- /dev/null
+#source: pr19636-1.s
+#as: --32 -mrelax-relocations=no
+#ld: -m elf_i386 --no-dynamic-linker
+#readelf : -r --wide -x .got -x .got.plt --dyn-syms
+
+There are no relocations in this file.
+
+Hex dump of section '.got':
+ 0x[0-9a-f]+ [0 ]+\.+
+
+Hex dump of section '.got.plt':
+ 0x[0-9a-f]+ [0 ]+\.+
--- /dev/null
+#source: pr19636-1.s
+#as: --32 -mrelax-relocations=no
+#ld: -E -m elf_i386 --no-dynamic-linker
+#readelf : -r --wide -x .got -x .got.plt --dyn-syms
+
+There are no relocations in this file.
+
+Symbol table '\.dynsym' contains [0-9]+ entries:
+ +Num: +Value +Size Type +Bind +Vis +Ndx Name
+ +0: 0+ +0 +NOTYPE +LOCAL +DEFAULT +UND +
+#...
+ +[0-9]+: +[a-f0-9]+ +0 +NOTYPE +GLOBAL +DEFAULT +[0-9]+ +_start
+#...
+
+Hex dump of section '.got':
+ 0x[0-9a-f]+ [0 ]+\.+
+
+Hex dump of section '.got.plt':
+ 0x[0-9a-f]+ +[0-9a-f]+ +[0 ]+ .\.+
--- /dev/null
+#source: pr19636-1.s
+#as: --32 -mrelax-relocations=no
+#ld: -E -m elf_i386 --no-dynamic-linker
+#readelf : --wide --dyn-syms
+
+#failif
+#...
+ +[0-9]+: +[a-f0-9]+ +0 +NOTYPE +WEAK +DEFAULT +UND +func[0-9]?
+#...
--- /dev/null
+ .text
+ .weak func
+ .globl _start
+_start:
+ cmp func@GOT(%eax), %eax
+ jmp *func@GOT(%eax)
+ call func@PLT
+ cmp $func, %eax
+ call func
--- /dev/null
+#source: pr19636-2.s
+#as: --32 -mrelax-relocations=no
+#ld: -pie -m elf_i386
+#readelf : -r --wide -x .got -x .got.plt --dyn-syms
+
+Relocation section '\.rel\.dyn' at offset [0x0-9a-f]+ contains 1 entries:
+ +Offset +Info +Type +Sym. Value +Symbol's Name
+[0-9a-f]+ +[0-9a-f]+ +R_386_PC32 +0+ +func
+
+Symbol table '\.dynsym' contains 2 entries:
+ +Num: +Value +Size Type +Bind +Vis +Ndx Name
+ +0: 0+ +0 +NOTYPE +LOCAL +DEFAULT +UND +
+ +[0-9]+: +[a-f0-9]+ +0 +NOTYPE +WEAK +DEFAULT +UND +func
+
+Hex dump of section '.got':
+ 0x[0-9a-f]+ [0 ]+\.+
+
+Hex dump of section '.got.plt':
+ 0x[0-9a-f]+ +[0-9a-f]+ +[0 ]+ .\.+
--- /dev/null
+#source: pr19636-2.s
+#as: --32 -mrelax-relocations=no
+#ld: -pie -E -m elf_i386
+#readelf : -r --wide -x .got -x .got.plt --dyn-syms
+
+Relocation section '\.rel\.dyn' at offset [0x0-9a-f]+ contains 1 entries:
+ +Offset +Info +Type +Sym. Value +Symbol's Name
+[0-9a-f]+ +[0-9a-f]+ +R_386_PC32 +0+ +func
+
+Symbol table '\.dynsym' contains [0-9]+ entries:
+ +Num: +Value +Size Type +Bind +Vis +Ndx Name
+#...
+ +[0-9]+: +[a-f0-9]+ +0 +NOTYPE +GLOBAL +DEFAULT +[0-9]+ +_start
+#...
+ +[0-9]+: +[a-f0-9]+ +0 +NOTYPE +WEAK +DEFAULT +UND +func
+#...
+
+Hex dump of section '.got':
+ 0x[0-9a-f]+ [0 ]+\.+
+
+Hex dump of section '.got.plt':
+ 0x[0-9a-f]+ +[0-9a-f]+ +[0 ]+ .\.+
--- /dev/null
+#source: pr19636-2.s
+#as: --32 -mrelax-relocations=no
+#ld: -pie -m elf_i386
+#objdump: -dw
+#target: i?86-*-nacl* x86_64-*-nacl*
+
+.*: +file format .*
+
+
+Disassembly of section .plt:
+
+0+ <.plt>:
+[ ]*[a-f0-9]+: ff 73 04 pushl 0x4\(%ebx\)
+[ ]*[a-f0-9]+: 8b 4b 08 mov 0x8\(%ebx\),%ecx
+[ ]*[a-f0-9]+: 83 e1 e0 and \$0xffffffe0,%ecx
+[ ]*[a-f0-9]+: ff e1 jmp \*%ecx
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 8b 8b 0c 00 00 00 mov 0xc\(%ebx\),%ecx
+[ ]*[a-f0-9]+: 83 e1 e0 and \$0xffffffe0,%ecx
+[ ]*[a-f0-9]+: ff e1 jmp \*%ecx
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 68 00 00 00 00 push \$0x0
+[ ]*[a-f0-9]+: e9 00 00 00 00 jmp 6a <_start-0x16>
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+[ ]*[a-f0-9]+: 90 nop
+
+Disassembly of section .text:
+
+0+80 <_start>:
+[ ]*[a-f0-9]+: 3b 80 fc ff ff ff cmp -0x4\(%eax\),%eax
+[ ]*[a-f0-9]+: ff a0 fc ff ff ff jmp \*-0x4\(%eax\)
+[ ]*[a-f0-9]+: e8 af ff ff ff call 40 <_start-0x40>
+[ ]*[a-f0-9]+: 3d 00 00 00 00 cmp \$0x0,%eax
+[ ]*[a-f0-9]+: e8 fc ff ff ff call 97 <_start\+0x17>
--- /dev/null
+#source: pr19636-2.s
+#as: --32 -mrelax-relocations=no
+#ld: -pie -m elf_i386
+#objdump: -dw
+#notarget: i?86-*-nacl* x86_64-*-nacl*
+
+.*: +file format .*
+
+
+Disassembly of section .plt:
+
+0+130 <.plt>:
+[ ]*[a-f0-9]+: ff b3 04 00 00 00 pushl 0x4\(%ebx\)
+[ ]*[a-f0-9]+: ff a3 08 00 00 00 jmp \*0x8\(%ebx\)
+[ ]*[a-f0-9]+: 00 00 add %al,\(%eax\)
+[ ]*[a-f0-9]+: 00 00 add %al,\(%eax\)
+[ ]*[a-f0-9]+: ff a3 0c 00 00 00 jmp \*0xc\(%ebx\)
+[ ]*[a-f0-9]+: 68 00 00 00 00 push \$0x0
+[ ]*[a-f0-9]+: e9 00 00 00 00 jmp 150 <_start>
+
+Disassembly of section .text:
+
+0+150 <_start>:
+[ ]*[a-f0-9]+: 3b 80 fc ff ff ff cmp -0x4\(%eax\),%eax
+[ ]*[a-f0-9]+: ff a0 fc ff ff ff jmp \*-0x4\(%eax\)
+[ ]*[a-f0-9]+: e8 df ff ff ff call 140 <_start-0x10>
+[ ]*[a-f0-9]+: 3d 00 00 00 00 cmp \$0x0,%eax
+[ ]*[a-f0-9]+: e8 fc ff ff ff call 167 <_start\+0x17>
--- /dev/null
+#source: pr19636-2.s
+#as: --32 -mrelax-relocations=no
+#ld: -shared -m elf_i386
+#readelf : -r --wide --dyn-syms
+#target: i?86-*-nacl* x86_64-*-nacl*
+
+Relocation section '\.rel\.dyn' at offset [0x0-9a-f]+ contains 3 entries:
+ +Offset +Info +Type +Sym. Value +Symbol's Name
+[0-9a-f]+ +[0-9a-f]+ +R_386_32 +0+ +func
+[0-9a-f]+ +[0-9a-f]+ +R_386_PC32 +0+ +func
+[0-9a-f]+ +[0-9a-f]+ +R_386_GLOB_DAT +0+ +func
+
+Relocation section '\.rel\.plt' at offset [0x0-9a-f]+ contains 1 entries:
+ +Offset +Info +Type +Sym. Value +Symbol's Name
+[0-9a-f]+ +[0-9a-f]+ +R_386_JUMP_SLOT +0+ +func
+
+Symbol table '\.dynsym' contains [0-9]+ entries:
+ +Num: +Value +Size Type +Bind +Vis +Ndx Name
+#...
+ +[0-9]+: +[a-f0-9]+ +0 +NOTYPE +WEAK +DEFAULT +UND +func
+#pass
--- /dev/null
+#source: pr19636-2.s
+#as: --32 -mrelax-relocations=no
+#ld: -shared -m elf_i386
+#readelf : -r --wide --dyn-syms
+#notarget: i?86-*-nacl* x86_64-*-nacl*
+
+Relocation section '\.rel\.dyn' at offset [0x0-9a-f]+ contains 3 entries:
+ +Offset +Info +Type +Sym. Value +Symbol's Name
+[0-9a-f]+ +[0-9a-f]+ +R_386_32 +0+ +func
+[0-9a-f]+ +[0-9a-f]+ +R_386_PC32 +0+ +func
+[0-9a-f]+ +[0-9a-f]+ +R_386_GLOB_DAT +0+ +func
+
+Symbol table '\.dynsym' contains [0-9]+ entries:
+ +Num: +Value +Size Type +Bind +Vis +Ndx Name
+#...
+ +[0-9]+: +[a-f0-9]+ +0 +NOTYPE +WEAK +DEFAULT +UND +func
+#pass
--- /dev/null
+#source: pr19636-2.s
+#as: --32 -mrelax-relocations=no
+#ld: -shared -Bsymbolic -m elf_i386
+#readelf : -r --wide --dyn-syms
+#target: i?86-*-nacl* x86_64-*-nacl*
+
+Relocation section '\.rel\.dyn' at offset [0x0-9a-f]+ contains 3 entries:
+ +Offset +Info +Type +Sym. Value +Symbol's Name
+[0-9a-f]+ +[0-9a-f]+ +R_386_32 +0+ +func
+[0-9a-f]+ +[0-9a-f]+ +R_386_PC32 +0+ +func
+[0-9a-f]+ +[0-9a-f]+ +R_386_GLOB_DAT +0+ +func
+
+Relocation section '\.rel\.plt' at offset [0x0-9a-f]+ contains 1 entries:
+ +Offset +Info +Type +Sym. Value +Symbol's Name
+[0-9a-f]+ +[0-9a-f]+ +R_386_JUMP_SLOT +0+ +func
+
+Symbol table '\.dynsym' contains [0-9]+ entries:
+ +Num: +Value +Size Type +Bind +Vis +Ndx Name
+#...
+ +[0-9]+: +[a-f0-9]+ +0 +NOTYPE +WEAK +DEFAULT +UND +func
+#pass
--- /dev/null
+#source: pr19636-2.s
+#as: --32 -mrelax-relocations=no
+#ld: -shared -Bsymbolic -m elf_i386
+#readelf : -r --wide --dyn-syms
+#notarget: i?86-*-nacl* x86_64-*-nacl*
+
+Relocation section '\.rel\.dyn' at offset [0x0-9a-f]+ contains 3 entries:
+ +Offset +Info +Type +Sym. Value +Symbol's Name
+[0-9a-f]+ +[0-9a-f]+ +R_386_32 +0+ +func
+[0-9a-f]+ +[0-9a-f]+ +R_386_PC32 +0+ +func
+[0-9a-f]+ +[0-9a-f]+ +R_386_GLOB_DAT +0+ +func
+
+Symbol table '\.dynsym' contains [0-9]+ entries:
+ +Num: +Value +Size Type +Bind +Vis +Ndx Name
+#...
+ +[0-9]+: +[a-f0-9]+ +0 +NOTYPE +WEAK +DEFAULT +UND +func
+#pass
--- /dev/null
+ .text
+ .weak func
+ .globl _start
+_start:
+ .dc.a func
--- /dev/null
+#source: pr19636-3.s
+#as: --32
+#ld: -pie -m elf_i386
+#readelf : -r --dyn-syms --wide
+
+There are no relocations in this file.
+
+Symbol table '\.dynsym' contains 1 entries:
+ +Num: +Value +Size Type +Bind +Vis +Ndx Name
+ +0: 0+ +0 +NOTYPE +LOCAL +DEFAULT +UND +
--- /dev/null
+#source: pr19636-3.s
+#as: --32
+#ld: -pie -E -m elf_i386
+#readelf : -r --wide
+
+There are no relocations in this file.
--- /dev/null
+#source: pr19636-3.s
+#as: --32
+#ld: -pie -E -m elf_i386
+#readelf : --dyn-syms --wide
+
+#failif
+#...
+ +[0-9]+: +[a-f0-9]+ +0 +NOTYPE +WEAK +DEFAULT +UND +func
+#...
--- /dev/null
+#source: pr19636-3.s
+#as: --32
+#ld: -shared -m elf_i386
+#readelf : -r --wide --dyn-syms
+
+Relocation section '\.rela?\..*' at offset 0x[0-9a-f]+ contains [0-9]+ entries:
+#...
+[0-9a-f]+[ \t]+[0-9a-f]+[ \t]+R_.*[ \t]+[0-9a-f]+[ \t]+func.*
+#...
+Symbol table '\.dynsym' contains [0-9]+ entries:
+ +Num: +Value +Size Type +Bind +Vis +Ndx Name
+#...
+ +[0-9]+: +[a-f0-9]+ +0 +NOTYPE +WEAK +DEFAULT +UND +func
+#...
--- /dev/null
+#source: pr19636-3.s
+#as: --32
+#ld: -shared -Bsymbolic -m elf_i386
+#readelf : -r --wide --dyn-syms
+
+Relocation section '\.rela?\..*' at offset 0x[0-9a-f]+ contains [0-9]+ entries:
+#...
+[0-9a-f]+[ \t]+[0-9a-f]+[ \t]+R_.*[ \t]+[0-9a-f]+[ \t]+func.*
+#...
+Symbol table '\.dynsym' contains [0-9]+ entries:
+ +Num: +Value +Size Type +Bind +Vis +Ndx Name
+#...
+ +[0-9]+: +[a-f0-9]+ +0 +NOTYPE +WEAK +DEFAULT +UND +func
+#...
--- /dev/null
+#source: pr19636-3.s
+#as: --32
+#ld: -E -m elf_i386
+#readelf : -r --wide
+
+There are no relocations in this file.
--- /dev/null
+#source: pr19636-3.s
+#as: --32
+#ld: -E -m elf_i386
+#readelf : --dyn-syms --wide
+
+#failif
+#...
+ +[0-9]+: +[a-f0-9]+ +0 +NOTYPE +WEAK +DEFAULT +UND +func
+#...
--- /dev/null
+ .text
+ .type start,"function"
+ .global start
+start:
+ .type _start,"function"
+ .global _start
+_start:
+ .type __start,"function"
+ .global __start
+__start:
+ .type main,"function"
+ .global main
+main:
+ .long 0
--- /dev/null
+#source: pr19636-4.s
+#as: --32
+#ld: -pie --defsym foobar=0x100 -m elf_i386
+#readelf : --dyn-syms --wide
+
+Symbol table '\.dynsym' contains 1 entries:
+ +Num: +Value +Size Type +Bind +Vis +Ndx Name
+ +0: 0+ +0 +NOTYPE +LOCAL +DEFAULT +UND +
--- /dev/null
+#source: pr19636-4.s
+#as: --32
+#ld: -pie -E --defsym foobar=0x100 -m elf_i386
+#readelf : --dyn-syms --wide
+
+Symbol table '\.dynsym' contains [0-9]+ entries:
+ +Num: +Value +Size Type +Bind +Vis +Ndx Name
+#...
+ +[0-9]+: +0+100 +0 +NOTYPE +GLOBAL +DEFAULT +ABS +foobar
+#pass
--- /dev/null
+#source: pr19636-4.s
+#as: --32
+#ld: -shared -Bsymbolic --defsym foobar=0x100 -m elf_i386
+#readelf : --dyn-syms --wide
+
+Symbol table '\.dynsym' contains [0-9]+ entries:
+ +Num: +Value +Size Type +Bind +Vis +Ndx Name
+#...
+ +[0-9]+: +0+100 +0 +NOTYPE +GLOBAL +DEFAULT +ABS +foobar
+#pass
--- /dev/null
+#source: pr19636-4.s
+#as: --32
+#ld: -E --defsym foobar=0x100 -m elf_i386
+#readelf : --dyn-syms --wide
+
+Symbol table '\.dynsym' contains [0-9]+ entries:
+ +Num: +Value +Size Type +Bind +Vis +Ndx Name
+#...
+ +[0-9]+: +0+100 +0 +NOTYPE +GLOBAL +DEFAULT +ABS +foobar
+#pass
--- /dev/null
+Weak undefined
--- /dev/null
+#include <stdio.h>
+
+extern int __attribute__ ((weak)) fun (void);
+
+int
+main (void)
+{
+ if (&fun != 0)
+ fun ();
+ else
+ printf ("Weak undefined\n");
+ return 0;
+}
--- /dev/null
+#include <stdio.h>
+
+void
+fun (void)
+{
+ printf ("Weak defined\n");
+}
#ld: -pie -melf32_x86_64
#readelf: -r --wide
-Relocation section '.rela.dyn' at offset 0x[0-9a-f]+ contains 1 entries:
- Offset Info Type Sym. Value Symbol's Name \+ Addend
-[0-9a-f]+ +[0-9a-f]+ +R_X86_64_32 +[0-9a-f]+ +func \+ 0
+There are no relocations in this file.
#ld: -pie -melf32_x86_64
#readelf: -r --wide
-Relocation section '.rela.dyn' at offset 0x[0-9a-f]+ contains 1 entries:
- Offset Info Type Sym. Value Symbol's Name \+ Addend
-[0-9a-f]+ +[0-9a-f]+ +R_X86_64_64 +[0-9a-f]+ +func \+ 1
+There are no relocations in this file.
--- /dev/null
+ .text
+ .weak func
+ .globl _start
+_start:
+ .dc.a func
--- /dev/null
+#source: pr19636-1.s
+#as: --64
+#ld: -pie -m elf_x86_64
+#readelf : -r --dyn-syms --wide
+
+There are no relocations in this file.
+
+Symbol table '\.dynsym' contains 1 entries:
+ +Num: +Value +Size Type +Bind +Vis +Ndx Name
+ +0: 0+ +0 +NOTYPE +LOCAL +DEFAULT +UND +
--- /dev/null
+#source: pr19636-1.s
+#as: --64
+#ld: -pie -E -m elf_x86_64
+#readelf : -r --wide
+
+There are no relocations in this file.
--- /dev/null
+#source: pr19636-1.s
+#as: --64
+#ld: -pie -E -m elf_x86_64
+#readelf : --dyn-syms --wide
+
+#failif
+#...
+ +[0-9]+: +[a-f0-9]+ +0 +NOTYPE +WEAK +DEFAULT +UND +func
+#...
--- /dev/null
+#source: pr19636-1.s
+#as: --64
+#ld: -shared -m elf_x86_64
+#readelf : -r --wide --dyn-syms
+
+Relocation section '\.rela?\..*' at offset 0x[0-9a-f]+ contains [0-9]+ entries:
+#...
+[0-9a-f]+[ \t]+[0-9a-f]+[ \t]+R_.*[ \t]+[0-9a-f]+[ \t]+func.*
+#...
+Symbol table '\.dynsym' contains [0-9]+ entries:
+ +Num: +Value +Size Type +Bind +Vis +Ndx Name
+#...
+ +[0-9]+: +[a-f0-9]+ +0 +NOTYPE +WEAK +DEFAULT +UND +func
+#...
--- /dev/null
+#source: pr19636-1.s
+#as: --64
+#ld: -shared -Bsymbolic -m elf_x86_64
+#readelf : -r --wide --dyn-syms
+
+Relocation section '\.rela?\..*' at offset 0x[0-9a-f]+ contains [0-9]+ entries:
+#...
+[0-9a-f]+[ \t]+[0-9a-f]+[ \t]+R_.*[ \t]+[0-9a-f]+[ \t]+func.*
+#...
+Symbol table '\.dynsym' contains [0-9]+ entries:
+ +Num: +Value +Size Type +Bind +Vis +Ndx Name
+#...
+ +[0-9]+: +[a-f0-9]+ +0 +NOTYPE +WEAK +DEFAULT +UND +func
+#...
--- /dev/null
+#source: pr19636-1.s
+#as: --64
+#ld: -E -m elf_x86_64
+#readelf : -r --wide
+
+There are no relocations in this file.
--- /dev/null
+#source: pr19636-1.s
+#as: --64
+#ld: -E -m elf_x86_64
+#readelf : --dyn-syms --wide
+
+#failif
+#...
+ +[0-9]+: +[a-f0-9]+ +0 +NOTYPE +WEAK +DEFAULT +UND +func
+#...
--- /dev/null
+ .text
+ .weak func1
+ .weak func2
+ .weak func3
+ .globl _start
+_start:
+ cmp func1@GOTPCREL(%rip),%rax
+ jmp *func2@GOTPCREL(%rip)
+ call func3@PLT
--- /dev/null
+#source: pr19636-2.s
+#as: --64 -mrelax-relocations=no
+#ld: -pie -m elf_x86_64 --no-dynamic-linker
+#readelf : -r --wide -x .got -x .got.plt --dyn-syms
+
+There are no relocations in this file.
+
+Symbol table '\.dynsym' contains 1 entries:
+ +Num: +Value +Size Type +Bind +Vis +Ndx Name
+ +0: 0+ +0 +NOTYPE +LOCAL +DEFAULT +UND +
+
+Hex dump of section '.got':
+ 0x[0-9a-f]+ [0 ]+\.+
+
+Hex dump of section '.got.plt':
+ 0x[0-9a-f]+ +[0-9a-f]+ +[0 ]+ .+
+ 0x[0-9a-f]+ [0 ]+\.+
--- /dev/null
+#source: pr19636-2.s
+#as: --64 -mrelax-relocations=no
+#ld: -pie -E -m elf_x86_64 --no-dynamic-linker
+#readelf : -r --wide -x .got -x .got.plt --dyn-syms
+
+There are no relocations in this file.
+
+Symbol table '\.dynsym' contains [0-9]+ entries:
+ +Num: +Value +Size Type +Bind +Vis +Ndx Name
+ +0: 0+ +0 +NOTYPE +LOCAL +DEFAULT +UND +
+#...
+ +[0-9]+: +[a-f0-9]+ +0 +NOTYPE +GLOBAL +DEFAULT +[0-9]+ +_start
+#...
+
+Hex dump of section '.got':
+ 0x[0-9a-f]+ [0 ]+\.+
+
+Hex dump of section '.got.plt':
+ 0x[0-9a-f]+ +[0-9a-f]+ +[0 ]+ .+
+ 0x[0-9a-f]+ [0 ]+\.+
--- /dev/null
+#source: pr19636-2.s
+#as: --64 -mrelax-relocations=no
+#ld: -pie -E -m elf_x86_64 --no-dynamic-linker
+#readelf : --wide --dyn-syms
+
+#failif
+#...
+ +[0-9]+: +[a-f0-9]+ +0 +NOTYPE +WEAK +DEFAULT +UND +func[0-9]?
+#...
--- /dev/null
+#source: pr19636-2.s
+#as: --64 -mrelax-relocations=no
+#ld: -pie -m elf_x86_64 --no-dynamic-linker
+#objdump: -dw
+#target: x86_64-*-nacl*
+
+.*: +file format .*
+
+
+Disassembly of section .plt:
+
+0+ <.plt>:
+[ ]*[a-f0-9]+: ff 35 42 02 01 10 pushq 0x10010242\(%rip\) # 10010248 <_GLOBAL_OFFSET_TABLE_\+0x8>
+[ ]*[a-f0-9]+: 4c 8b 1d 43 02 01 10 mov 0x10010243\(%rip\),%r11 # 10010250 <_GLOBAL_OFFSET_TABLE_\+0x10>
+[ ]*[a-f0-9]+: 41 83 e3 e0 and \$0xffffffe0,%r11d
+[ ]*[a-f0-9]+: 4d 01 fb add %r15,%r11
+[ ]*[a-f0-9]+: 41 ff e3 jmpq \*%r11
+[ ]*[a-f0-9]+: 66 0f 1f 84 00 00 00 00 00 nopw 0x0\(%rax,%rax,1\)
+[ ]*[a-f0-9]+: 66 66 66 66 66 66 2e 0f 1f 84 00 00 00 00 00 data16 data16 data16 data16 data16 nopw %cs:0x0\(%rax,%rax,1\)
+[ ]*[a-f0-9]+: 66 66 66 66 66 66 2e 0f 1f 84 00 00 00 00 00 data16 data16 data16 data16 data16 nopw %cs:0x0\(%rax,%rax,1\)
+[ ]*[a-f0-9]+: 66 90 xchg %ax,%ax
+[ ]*[a-f0-9]+: 4c 8b 1d 11 02 01 10 mov 0x10010211\(%rip\),%r11 # 10010258 <_GLOBAL_OFFSET_TABLE_\+0x18>
+[ ]*[a-f0-9]+: 41 83 e3 e0 and \$0xffffffe0,%r11d
+[ ]*[a-f0-9]+: 4d 01 fb add %r15,%r11
+[ ]*[a-f0-9]+: 41 ff e3 jmpq \*%r11
+[ ]*[a-f0-9]+: 66 66 66 66 66 66 2e 0f 1f 84 00 00 00 00 00 data16 data16 data16 data16 data16 nopw %cs:0x0\(%rax,%rax,1\)
+[ ]*[a-f0-9]+: 68 00 00 00 00 pushq \$0x0
+[ ]*[a-f0-9]+: e9 00 00 00 00 jmpq 6a <_start-0x16>
+[ ]*[a-f0-9]+: 66 66 66 66 66 66 2e 0f 1f 84 00 00 00 00 00 data16 data16 data16 data16 data16 nopw %cs:0x0\(%rax,%rax,1\)
+[ ]*[a-f0-9]+: 0f 1f 80 00 00 00 00 nopl 0x0\(%rax\)
+
+Disassembly of section .text:
+
+0+80 <_start>:
+[ ]*[a-f0-9]+: 48 3b 05 a9 01 01 10 cmp 0x100101a9\(%rip\),%rax # 10010230 <_DYNAMIC\+0xe0>
+[ ]*[a-f0-9]+: ff 25 ab 01 01 10 jmpq \*0x100101ab\(%rip\) # 10010238 <_DYNAMIC\+0xe8>
+[ ]*[a-f0-9]+: e8 ae ff ff ff callq 40 <_start-0x40>
--- /dev/null
+#source: pr19636-2.s
+#as: --64 -mrelax-relocations=no
+#ld: -pie -m elf_x86_64 --no-dynamic-linker
+#objdump: -dw
+#notarget: x86_64-*-nacl*
+
+.*: +file format .*
+
+
+Disassembly of section .plt:
+
+0+120 <.plt>:
+[ ]*[a-f0-9]+: ff 35 2a 01 20 00 pushq 0x20012a\(%rip\) # 200250 <_GLOBAL_OFFSET_TABLE_\+0x8>
+[ ]*[a-f0-9]+: ff 25 2c 01 20 00 jmpq \*0x20012c\(%rip\) # 200258 <_GLOBAL_OFFSET_TABLE_\+0x10>
+[ ]*[a-f0-9]+: 0f 1f 40 00 nopl 0x0\(%rax\)
+[ ]*[a-f0-9]+: ff 25 2a 01 20 00 jmpq \*0x20012a\(%rip\) # 200260 <_GLOBAL_OFFSET_TABLE_\+0x18>
+[ ]*[a-f0-9]+: 68 00 00 00 00 pushq \$0x0+
+[ ]*[a-f0-9]+: e9 00 00 00 00 jmpq [a-f0-9]+ <.*>
+
+Disassembly of section .text:
+
+0+140 <_start>:
+[ ]*[a-f0-9]+: 48 3b 05 f1 00 20 00 cmp 0x2000f1\(%rip\),%rax # 200238 <_DYNAMIC\+0xe0>
+[ ]*[a-f0-9]+: ff 25 f3 00 20 00 jmpq \*0x2000f3\(%rip\) # 200240 <_DYNAMIC\+0xe8>
+[ ]*[a-f0-9]+: e8 de ff ff ff callq 130 <_start-0x10>
--- /dev/null
+#source: pr19636-2.s
+#as: --64 -mrelax-relocations=no
+#ld: -shared -m elf_x86_64 --no-dynamic-linker
+#readelf : -r --wide --dyn-syms
+
+Relocation section '\.rela\.dyn' at offset [0x0-9a-f]+ contains 2 entries:
+ +Offset +Info +Type +Symbol's Value +Symbol's Name \+ Addend
+[0-9a-f]+ +[0-9a-f]+ +R_X86_64_GLOB_DAT +0+ +func1 \+ 0
+[0-9a-f]+ +[0-9a-f]+ +R_X86_64_GLOB_DAT +0+ +func2 \+ 0
+
+Relocation section '\.rela\.plt' at offset 0x[0-9a-f]+ contains 1 entries:
+ +Offset +Info +Type +Symbol's Value +Symbol's Name \+ Addend
+[0-9a-f]+ +[0-9a-f]+ +R_X86_64_JUMP_SLOT +0+ +func3 \+ 0
+
+Symbol table '\.dynsym' contains [0-9]+ entries:
+ +Num: +Value +Size Type +Bind +Vis +Ndx Name
+#...
+ +[0-9]+: +[a-f0-9]+ +0 +NOTYPE +WEAK +DEFAULT +UND +func[0-9]?
+#pass
--- /dev/null
+#source: pr19636-2.s
+#as: --64 -mrelax-relocations=no
+#ld: -shared -Bsymbolic -m elf_x86_64 --no-dynamic-linker
+#readelf : -r --wide --dyn-syms
+
+Relocation section '\.rela\.dyn' at offset [0x0-9a-f]+ contains 2 entries:
+ +Offset +Info +Type +Symbol's Value +Symbol's Name \+ Addend
+[0-9a-f]+ +[0-9a-f]+ +R_X86_64_GLOB_DAT +0+ +func1 \+ 0
+[0-9a-f]+ +[0-9a-f]+ +R_X86_64_GLOB_DAT +0+ +func2 \+ 0
+
+Relocation section '\.rela\.plt' at offset 0x[0-9a-f]+ contains 1 entries:
+ +Offset +Info +Type +Symbol's Value +Symbol's Name \+ Addend
+[0-9a-f]+ +[0-9a-f]+ +R_X86_64_JUMP_SLOT +0+ +func3 \+ 0
+
+Symbol table '\.dynsym' contains [0-9]+ entries:
+ +Num: +Value +Size Type +Bind +Vis +Ndx Name
+#...
+ +[0-9]+: +[a-f0-9]+ +0 +NOTYPE +WEAK +DEFAULT +UND +func[0-9]?
+#pass
--- /dev/null
+#source: pr19636-2.s
+#as: --64 -mrelax-relocations=no
+#ld: -m elf_x86_64 --no-dynamic-linker
+#readelf : -r --wide -x .got -x .got.plt --dyn-syms
+
+There are no relocations in this file.
+
+Hex dump of section '.got':
+ 0x[0-9a-f]+ [0 ]+\.+
+
+Hex dump of section '.got.plt':
+ 0x[0-9a-f]+ [0 ]+\.+
+ 0x[0-9a-f]+ [0 ]+\.+
--- /dev/null
+#source: pr19636-2.s
+#as: --64 -mrelax-relocations=no
+#ld: -E -m elf_x86_64 --no-dynamic-linker
+#readelf : -r --wide -x .got -x .got.plt --dyn-syms
+
+There are no relocations in this file.
+
+Symbol table '\.dynsym' contains [0-9]+ entries:
+ +Num: +Value +Size Type +Bind +Vis +Ndx Name
+ +0: 0+ +0 +NOTYPE +LOCAL +DEFAULT +UND +
+#...
+ +[0-9]+: +[a-f0-9]+ +0 +NOTYPE +GLOBAL +DEFAULT +[0-9]+ +_start
+#...
+
+Hex dump of section '.got':
+ 0x[0-9a-f]+ [0 ]+\.+
+
+Hex dump of section '.got.plt':
+ 0x[0-9a-f]+ +[0-9a-f]+ +[0 ]+ .+
+ 0x[0-9a-f]+ [0 ]+\.+
--- /dev/null
+#source: pr19636-2.s
+#as: --64 -mrelax-relocations=no
+#ld: -E -m elf_x86_64 --no-dynamic-linker
+#readelf : --wide --dyn-syms
+
+#failif
+#...
+ +[0-9]+: +[a-f0-9]+ +0 +NOTYPE +WEAK +DEFAULT +UND +func[0-9]?
+#...
--- /dev/null
+ .text
+ .type start,"function"
+ .global start
+start:
+ .type _start,"function"
+ .global _start
+_start:
+ .type __start,"function"
+ .global __start
+__start:
+ .type main,"function"
+ .global main
+main:
+ .long 0
--- /dev/null
+#source: pr19636-3.s
+#as: --64
+#ld: -pie --defsym foobar=0x100 -m elf_x86_64
+#readelf : --dyn-syms --wide
+
+Symbol table '\.dynsym' contains 1 entries:
+ +Num: +Value +Size Type +Bind +Vis +Ndx Name
+ +0: 0+ +0 +NOTYPE +LOCAL +DEFAULT +UND +
--- /dev/null
+#source: pr19636-3.s
+#as: --64
+#ld: -pie -E --defsym foobar=0x100 -m elf_x86_64
+#readelf : --dyn-syms --wide
+
+Symbol table '\.dynsym' contains [0-9]+ entries:
+ +Num: +Value +Size Type +Bind +Vis +Ndx Name
+#...
+ +[0-9]+: +0+100 +0 +NOTYPE +GLOBAL +DEFAULT +ABS +foobar
+#pass
--- /dev/null
+#source: pr19636-3.s
+#as: --64
+#ld: -shared -Bsymbolic --defsym foobar=0x100 -m elf_x86_64
+#readelf : --dyn-syms --wide
+
+Symbol table '\.dynsym' contains [0-9]+ entries:
+ +Num: +Value +Size Type +Bind +Vis +Ndx Name
+#...
+ +[0-9]+: +0+100 +0 +NOTYPE +GLOBAL +DEFAULT +ABS +foobar
+#pass
--- /dev/null
+#source: pr19636-3.s
+#as: --64
+#ld: -E --defsym foobar=0x100 -m elf_x86_64
+#readelf : --dyn-syms --wide
+
+Symbol table '\.dynsym' contains [0-9]+ entries:
+ +Num: +Value +Size Type +Bind +Vis +Ndx Name
+#...
+ +[0-9]+: +0+100 +0 +NOTYPE +GLOBAL +DEFAULT +ABS +foobar
+#pass
--- /dev/null
+Weak undefined
--- /dev/null
+#include <stdio.h>
+
+extern int __attribute__ ((weak)) fun (void);
+
+int
+main (void)
+{
+ if (&fun != 0)
+ fun ();
+ else
+ printf ("Weak undefined\n");
+ return 0;
+}
--- /dev/null
+#include <stdio.h>
+
+void
+fun (void)
+{
+ printf ("Weak defined\n");
+}
run_dump_test "pr19175"
run_dump_test "pr18591"
run_dump_test "pr19615"
+run_dump_test "pr19636-1a"
+run_dump_test "pr19636-1b"
+run_dump_test "pr19636-1c"
+run_dump_test "pr19636-1d"
+run_dump_test "pr19636-1e"
+run_dump_test "pr19636-1f"
+run_dump_test "pr19636-1g"
+run_dump_test "pr19636-2a"
+run_dump_test "pr19636-2b"
+run_dump_test "pr19636-2c"
+run_dump_test "pr19636-2d"
+run_dump_test "pr19636-2d-nacl"
+run_dump_test "pr19636-2e"
+run_dump_test "pr19636-2f"
+run_dump_test "pr19636-2g"
+run_dump_test "pr19636-2h"
+run_dump_test "pr19636-2i"
+run_dump_test "pr19636-3a"
+run_dump_test "pr19636-3b"
+run_dump_test "pr19636-3c"
+
+proc undefined_weak {cflags ldflags} {
+ set testname "Undefined weak symbol"
+ if { ![ string match "" $cflags$ldflags] } {
+ set testname "$testname ($cflags $ldflags)"
+ }
+
+ if { [ regexp "\-fPIE" $cflags]
+ && ![ regexp "\-z nodynamic-undefined-weak" $ldflags] } {
+ set weak_symbol "Weak defined"
+ } else {
+ set weak_symbol "Weak undefined"
+ }
+
+ run_cc_link_tests [list \
+ [list \
+ "Build libpr19704a.so" \
+ "-shared -Wl,-soname,libpr19704.so" \
+ "" \
+ { dummy.s } \
+ {} \
+ "libpr19704a.so" \
+ ] \
+ [list \
+ "Build libpr19704b.so" \
+ "-shared -Wl,-soname,libpr19704.so" \
+ "-fPIC" \
+ { pr19704b.c } \
+ {} \
+ "libpr19704b.so" \
+ ] \
+ ]
+
+ exec cp tmpdir/libpr19704a.so tmpdir/libpr19704.so
+
+ run_ld_link_exec_tests [] [list \
+ [list \
+ "Run pr19704" \
+ "$ldflags tmpdir/libpr19704.so -R tmpdir" \
+ "" \
+ { pr19704a.c } \
+ "pr19704" \
+ "pr19704.out" \
+ "$cflags" \
+ ] \
+ ]
+
+ exec cp tmpdir/libpr19704b.so tmpdir/libpr19704.so
+
+ set exec_output [run_host_cmd tmpdir/pr19704 ""]
+ if {![string match $weak_symbol $exec_output]} {
+ fail $testname
+ } else {
+ pass $testname
+ }
+}
# Add $PLT_CFLAGS if PLT is expected.
global PLT_CFLAGS
] \
]
}
+
+ undefined_weak "" ""
+ undefined_weak "-fPIE" ""
+ undefined_weak "-fPIE" "-pie"
+ undefined_weak "-fPIE" "-z nodynamic-undefined-weak"
+ undefined_weak "-fPIE" "-pie -z nodynamic-undefined-weak"
}
if { ![istarget "x86_64-*-linux*"]} {
projects / binutils-gdb.git / commitdiff