x86: Update UNDEFINED_WEAK_RESOLVED_TO_ZERO

Since the only information which SYMBOL_REFERENCES_LOCAL_P doesn't check
is relocations, UNDEFINED_WEAK_RESOLVED_TO_ZERO only needs to check for
relocations with SYMBOL_REFERENCES_LOCAL_P.

	* elf32-i386.c (elf_i386_relocate_section): Update usage of
	UNDEFINED_WEAK_RESOLVED_TO_ZERO.
	(elf_i386_finish_dynamic_symbol): Likewise.
	* elf64-x86-64.c (elf_x86_64_relocate_section): Likewise.
	(elf_x86_64_finish_dynamic_symbol): Likewise.
	* elfxx-x86.c (elf_x86_allocate_dynrelocs): Likewise.
	(_bfd_x86_elf_fixup_symbol): Likewise.

5 files changed, 23 insertions, 36 deletions

diff --git a/bfd/ChangeLog b/bfd/ChangeLog
index b3eae2e..06b9278 100644
--- a/bfd/ChangeLog
+++ b/bfd/ChangeLog
@@ -1,5 +1,15 @@
 2017-09-09  H.J. Lu  <hongjiu.lu@intel.com>
 
+	* elf32-i386.c (elf_i386_relocate_section): Update usage of
+	UNDEFINED_WEAK_RESOLVED_TO_ZERO.
+	(elf_i386_finish_dynamic_symbol): Likewise.
+	* elf64-x86-64.c (elf_x86_64_relocate_section): Likewise.
+	(elf_x86_64_finish_dynamic_symbol): Likewise.
+	* elfxx-x86.c (elf_x86_allocate_dynrelocs): Likewise.
+	(_bfd_x86_elf_fixup_symbol): Likewise.
+
+2017-09-09  H.J. Lu  <hongjiu.lu@intel.com>
+
 	* elfxx-x86.c (_bfd_x86_elf_link_symbol_references_local): Don't
 	check has_non_got_reloc.
 
diff --git a/bfd/elf32-i386.c b/bfd/elf32-i386.c
index 0100662..4337ab0 100644
--- a/bfd/elf32-i386.c
+++ b/bfd/elf32-i386.c
@@ -2466,10 +2466,7 @@ do_ifunc_pointer:
 	}
 
       resolved_to_zero = (eh != NULL
-			  && UNDEFINED_WEAK_RESOLVED_TO_ZERO (info,
-							      I386_ELF_DATA,
-							      eh->has_got_reloc,
-							      eh));
+			  && UNDEFINED_WEAK_RESOLVED_TO_ZERO (info, eh));
 
       switch (r_type)
 	{
@@ -3623,9 +3620,7 @@ elf_i386_finish_dynamic_symbol (bfd *output_bfd,
   /* 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, I386_ELF_DATA,
-						     eh->has_got_reloc,
-						     eh);
+  local_undefweak = UNDEFINED_WEAK_RESOLVED_TO_ZERO (info, eh);
 
   if (h->plt.offset != (bfd_vma) -1)
     {
diff --git a/bfd/elf64-x86-64.c b/bfd/elf64-x86-64.c
index 4faa78b..4371a16 100644
--- a/bfd/elf64-x86-64.c
+++ b/bfd/elf64-x86-64.c
@@ -2766,10 +2766,7 @@ do_ifunc_pointer:
 	}
 
       resolved_to_zero = (eh != NULL
-			  && UNDEFINED_WEAK_RESOLVED_TO_ZERO (info,
-							      X86_64_ELF_DATA,
-							      eh->has_got_reloc,
-							      eh));
+			  && 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.  */
@@ -3985,10 +3982,7 @@ elf_x86_64_finish_dynamic_symbol (bfd *output_bfd,
   /* 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,
-						     X86_64_ELF_DATA,
-						     eh->has_got_reloc,
-						     eh);
+  local_undefweak = UNDEFINED_WEAK_RESOLVED_TO_ZERO (info, eh);
 
   if (h->plt.offset != (bfd_vma) -1)
     {
diff --git a/bfd/elfxx-x86.c b/bfd/elfxx-x86.c
index 20b07f0..c41dbef 100644
--- a/bfd/elfxx-x86.c
+++ b/bfd/elfxx-x86.c
@@ -107,10 +107,7 @@ elf_x86_allocate_dynrelocs (struct elf_link_hash_entry *h,
 
   plt_entry_size = htab->plt.plt_entry_size;
 
-  resolved_to_zero = UNDEFINED_WEAK_RESOLVED_TO_ZERO (info,
-						      bed->target_id,
-						      eh->has_got_reloc,
-						      eh);
+  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.  */
@@ -1446,19 +1443,12 @@ bfd_boolean
 _bfd_x86_elf_fixup_symbol (struct bfd_link_info *info,
 			   struct elf_link_hash_entry *h)
 {
-  if (h->dynindx != -1)
+  if (h->dynindx != -1
+      && UNDEFINED_WEAK_RESOLVED_TO_ZERO (info, elf_x86_hash_entry (h)))
     {
-      const struct elf_backend_data *bed
-	= get_elf_backend_data (info->output_bfd);
-      if (UNDEFINED_WEAK_RESOLVED_TO_ZERO (info,
-					   bed->target_id,
-					   elf_x86_hash_entry (h)->has_got_reloc,
-					   elf_x86_hash_entry (h)))
-	{
-	  h->dynindx = -1;
-	  _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
-				  h->dynstr_index);
-	}
+      h->dynindx = -1;
+      _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
+			      h->dynstr_index);
     }
   return TRUE;
 }
diff --git a/bfd/elfxx-x86.h b/bfd/elfxx-x86.h
index 57f7862..2aee350 100644
--- a/bfd/elfxx-x86.h
+++ b/bfd/elfxx-x86.h
@@ -56,14 +56,12 @@
    2. Has no GOT/PLT relocation.
    Local undefined weak symbol is always resolved to 0.
  */
-#define UNDEFINED_WEAK_RESOLVED_TO_ZERO(INFO, ID, GOT_RELOC, EH) \
+#define UNDEFINED_WEAK_RESOLVED_TO_ZERO(INFO, EH) \
   ((EH)->elf.root.type == bfd_link_hash_undefweak		 \
    && (SYMBOL_REFERENCES_LOCAL_P ((INFO), &(EH)->elf)		 \
        || (bfd_link_executable (INFO)				 \
-	   && (elf_x86_hash_table ((INFO), (ID))->interp == NULL \
-	       || !(GOT_RELOC)					 \
-	       || (EH)->has_non_got_reloc			 \
-	       || !(INFO)->dynamic_undefined_weak))))
+	   && (!(EH)->has_got_reloc				 \
+	       || (EH)->has_non_got_reloc))))
 
 /* Should copy relocation be generated for a symbol.  Don't generate
    copy relocation against a protected symbol defined in a shared