* elf64-ppc.c (struct ppc64_elf_obj_tdata): Add has_dotsym.

	(ppc64_elf_add_symbol_hook): Set has_dotsym.
	(ppc64_elf_check_directives): Only process syms when has_dotsym.
	(func_desc_adjust): Hide fake function descriptors when function
	code entry is defined.
	(adjust_opd_syms): Adjust for deleted_section becoming union field.

diff --git a/bfd/ChangeLog b/bfd/ChangeLog
index 7ab00f0993f78a18d6be5167ecf0268ba60bd037..bf8f14b391a842158ab91a56bcee44b4a111458d 100644 (file)
--- a/bfd/ChangeLog
+++ b/bfd/ChangeLog
@@ -1,3 +1,12 @@
+2005-05-09  Alan Modra  <amodra@bigpond.net.au>
+
+       * elf64-ppc.c (struct ppc64_elf_obj_tdata): Add has_dotsym.
+       (ppc64_elf_add_symbol_hook): Set has_dotsym.
+       (ppc64_elf_check_directives): Only process syms when has_dotsym.
+       (func_desc_adjust): Hide fake function descriptors when function
+       code entry is defined.
+       (adjust_opd_syms): Adjust for deleted_section becoming union field.
+
 2005-05-09  Alan Modra  <amodra@bigpond.net.au>
 
        * elfcode.h (elf_object_p): Add more sanity checks on elf header.

diff --git a/bfd/elf64-ppc.c b/bfd/elf64-ppc.c
index fa6b095a1f912a4e27d044801179daef19ebebb2..f05c783472418cde23c988dfb26d3f93bd150ce7 100644 (file)
--- a/bfd/elf64-ppc.c
+++ b/bfd/elf64-ppc.c
@@ -2369,9 +2369,14 @@ struct ppc64_elf_obj_tdata
   asection *got;
   asection *relgot;
 
-  /* Used during garbage collection.  We attach global symbols defined
-     on removed .opd entries to this section so that the sym is removed.  */
-  asection *deleted_section;
+  union {
+    /* Used during garbage collection.  We attach global symbols defined
+       on removed .opd entries to this section so that the sym is removed.  */
+    asection *deleted_section;
+
+    /* Used when adding symbols.  */
+    bfd_boolean has_dotsym;
+  } u;
 
   /* TLS local dynamic got entry handling.  Suppose for multiple GOT
      sections means we potentially need one of these for each input bfd.  */
@@ -4042,10 +4047,10 @@ make_fdh (struct bfd_link_info *info,
    function type.  */
 
 static bfd_boolean
-ppc64_elf_add_symbol_hook (bfd *ibfd ATTRIBUTE_UNUSED,
+ppc64_elf_add_symbol_hook (bfd *ibfd,
                           struct bfd_link_info *info ATTRIBUTE_UNUSED,
                           Elf_Internal_Sym *isym,
-                          const char **name ATTRIBUTE_UNUSED,
+                          const char **name,
                           flagword *flags ATTRIBUTE_UNUSED,
                           asection **sec,
                           bfd_vma *value ATTRIBUTE_UNUSED)
@@ -4053,6 +4058,13 @@ ppc64_elf_add_symbol_hook (bfd *ibfd ATTRIBUTE_UNUSED,
   if (*sec != NULL
       && strcmp (bfd_get_section_name (ibfd, *sec), ".opd") == 0)
     isym->st_info = ELF_ST_INFO (ELF_ST_BIND (isym->st_info), STT_FUNC);
+
+  if ((*name)[0] == '.'
+      && ELF_ST_BIND (isym->st_info) == STB_GLOBAL
+      && ELF_ST_TYPE (isym->st_info) < STT_SECTION
+      && is_ppc64_elf_target (ibfd->xvec))
+    ppc64_elf_tdata (ibfd)->u.has_dotsym = 1;
+
   return TRUE;
 }
 
@@ -4166,12 +4178,18 @@ add_symbol_adjust (struct elf_link_hash_entry *h, void *inf)
 }
 
 static bfd_boolean
-ppc64_elf_check_directives (bfd *abfd ATTRIBUTE_UNUSED,
-                           struct bfd_link_info *info)
+ppc64_elf_check_directives (bfd *abfd, struct bfd_link_info *info)
 {
   struct ppc_link_hash_table *htab;
   struct add_symbol_adjust_data data;
 
+  if (!is_ppc64_elf_target (abfd->xvec))
+    return TRUE;
+
+  if (!ppc64_elf_tdata (abfd)->u.has_dotsym)
+    return TRUE;
+  ppc64_elf_tdata (abfd)->u.deleted_section = NULL;
+
   htab = ppc_hash_table (info);
   if (!is_ppc64_elf_target (htab->elf.root.creator))
     return TRUE;
@@ -5491,15 +5509,25 @@ func_desc_adjust (struct elf_link_hash_entry *h, void *inf)
     }
 
   /* Fake function descriptors are made undefweak.  If the function
-     code symbol is strong undefined, make the fake sym the same.  */
+     code symbol is strong undefined, make the fake sym the same.
+     If the function code symbol is defined, then force the fake
+     descriptor local;  We can't support overriding of symbols in a
+     shared library on a fake descriptor.  */
 
   if (fdh != NULL
       && fdh->fake
-      && fdh->elf.root.type == bfd_link_hash_undefweak
-      && fh->elf.root.type == bfd_link_hash_undefined)
+      && fdh->elf.root.type == bfd_link_hash_undefweak)
     {
-      fdh->elf.root.type = bfd_link_hash_undefined;
-      bfd_link_add_undef (&htab->elf.root, &fdh->elf.root);
+      if (fh->elf.root.type == bfd_link_hash_undefined)
+       {
+         fdh->elf.root.type = bfd_link_hash_undefined;
+         bfd_link_add_undef (&htab->elf.root, &fdh->elf.root);
+       }
+      else if (fh->elf.root.type == bfd_link_hash_defined
+              || fh->elf.root.type == bfd_link_hash_defweak)
+       {
+         _bfd_elf_link_hash_hide_symbol (info, &fdh->elf, TRUE);
+       }
     }
 
   if (fdh != NULL
@@ -5976,13 +6004,13 @@ adjust_opd_syms (struct elf_link_hash_entry *h, void *inf ATTRIBUTE_UNUSED)
       if (adjust == -1)
        {
          /* This entry has been deleted.  */
-         asection *dsec = ppc64_elf_tdata (sym_sec->owner)->deleted_section;
+         asection *dsec = ppc64_elf_tdata (sym_sec->owner)->u.deleted_section;
          if (dsec == NULL)
            {
              for (dsec = sym_sec->owner->sections; dsec; dsec = dsec->next)
                if (elf_discarded_section (dsec))
                  {
-                   ppc64_elf_tdata (sym_sec->owner)->deleted_section = dsec;
+                   ppc64_elf_tdata (sym_sec->owner)->u.deleted_section = dsec;
                    break;
                  }
            }