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[deliverable/binutils-gdb.git] / bfd / elf64-sh64.c
index bf35ea6c2745b5fcc06be752d4406e18a1928671..920247726763975d5bebcaf9b07686a0bae35841 100644 (file)
@@ -1,6 +1,6 @@
 /* SuperH SH64-specific support for 64-bit ELF
-   Copyright 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
-   Free Software Foundation, Inc.
+   Copyright 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
+   2010, 2011 Free Software Foundation, Inc.
 
    This file is part of BFD, the Binary File Descriptor library.
 
@@ -89,26 +89,14 @@ struct elf_sh64_link_hash_entry
   struct elf_sh64_pcrel_relocs_copied *pcrel_relocs_copied;
 };
 
-/* sh ELF linker hash table.  */
-
-struct elf_sh64_link_hash_table
-{
-  struct elf_link_hash_table root;
-};
-
 /* Traverse an sh ELF linker hash table.  */
 
-#define sh64_elf64_link_hash_traverse(table, func, info)               \
-  (elf_link_hash_traverse                                              \
-   (&(table)->root,                                                    \
+#define sh64_elf64_link_hash_traverse(table, func, info)       \
+  (elf_link_hash_traverse                                      \
+   ((table),                                                   \
     (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \
     (info)))
 
-/* Get the sh ELF linker hash table from a link_info structure.  */
-
-#define sh64_elf64_hash_table(p) \
-  ((struct elf_sh64_link_hash_table *) ((p)->hash))
-
 static bfd_reloc_status_type sh_elf64_ignore_reloc
   (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
 static bfd_reloc_status_type sh_elf64_reloc
@@ -1642,7 +1630,11 @@ sh_elf64_relocate_section (bfd *output_bfd ATTRIBUTE_UNUSED,
                                 STT_DATALABEL on the way to it.  */
                              | ((h->other & STO_SH5_ISA32) != 0
                                 && ! seen_stt_datalabel));
-             else if (!info->relocatable)
+             else if (!info->relocatable
+                      && (_bfd_elf_section_offset (output_bfd, info,
+                                                   input_section,
+                                                   rel->r_offset)
+                          != (bfd_vma) -1))
                {
                  (*_bfd_error_handler)
                    (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
@@ -1670,15 +1662,8 @@ sh_elf64_relocate_section (bfd *output_bfd ATTRIBUTE_UNUSED,
        }
 
       if (sec != NULL && elf_discarded_section (sec))
-       {
-         /* For relocs against symbols from removed linkonce sections,
-            or sections discarded by a linker script, we just want the
-            section contents zeroed.  Avoid any special processing.  */
-         _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
-         rel->r_info = 0;
-         rel->r_addend = 0;
-         continue;
-       }
+       RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
+                                        rel, relend, howto, contents);
 
       if (info->relocatable)
        continue;
@@ -1725,22 +1710,10 @@ sh_elf64_relocate_section (bfd *output_bfd ATTRIBUTE_UNUSED,
 
              if (sreloc == NULL)
                {
-                 const char *name;
-
-                 name = (bfd_elf_string_from_elf_section
-                         (input_bfd,
-                          elf_elfheader (input_bfd)->e_shstrndx,
-                          elf_section_data (input_section)->rel_hdr.sh_name));
-                 if (name == NULL)
+                 sreloc = _bfd_elf_get_dynamic_reloc_section
+                   (input_bfd, input_section, /*rela?*/ TRUE);
+                 if (sreloc == NULL)
                    return FALSE;
-
-                 BFD_ASSERT (CONST_STRNEQ (name, ".rela")
-                             && strcmp (bfd_get_section_name (input_bfd,
-                                                              input_section),
-                                        name + 5) == 0);
-
-                 sreloc = bfd_get_section_by_name (dynobj, name);
-                 BFD_ASSERT (sreloc != NULL);
                }
 
              skip = FALSE;
@@ -2195,17 +2168,12 @@ sh_elf64_get_relocated_section_contents (bfd *output_bfd,
 
          if (isymp->st_shndx == SHN_UNDEF)
            isec = bfd_und_section_ptr;
-         else if (isymp->st_shndx > 0 && isymp->st_shndx < SHN_LORESERVE)
-           isec = bfd_section_from_elf_index (input_bfd, isymp->st_shndx);
          else if (isymp->st_shndx == SHN_ABS)
            isec = bfd_abs_section_ptr;
          else if (isymp->st_shndx == SHN_COMMON)
            isec = bfd_com_section_ptr;
          else
-           {
-             /* Who knows?  */
-             isec = NULL;
-           }
+           isec = bfd_section_from_elf_index (input_bfd, isymp->st_shndx);
 
          *secpp = isec;
        }
@@ -2419,7 +2387,7 @@ sh_elf64_check_relocs (bfd *abfd, struct bfd_link_info *info,
                       asection *sec, const Elf_Internal_Rela *relocs)
 {
   Elf_Internal_Shdr *symtab_hdr;
-  struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
+  struct elf_link_hash_entry **sym_hashes;
   const Elf_Internal_Rela *rel;
   const Elf_Internal_Rela *rel_end;
   bfd *dynobj;
@@ -2437,9 +2405,6 @@ sh_elf64_check_relocs (bfd *abfd, struct bfd_link_info *info,
 
   symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
   sym_hashes = elf_sym_hashes (abfd);
-  sym_hashes_end = sym_hashes + symtab_hdr->sh_size/sizeof(Elf64_External_Sym);
-  if (!elf_bad_symtab (abfd))
-    sym_hashes_end -= symtab_hdr->sh_info;
 
   dynobj = elf_hash_table (info)->dynobj;
   local_got_offsets = elf_local_got_offsets (abfd);
@@ -2508,7 +2473,9 @@ sh_elf64_check_relocs (bfd *abfd, struct bfd_link_info *info,
          /* This relocation describes which C++ vtable entries are actually
             used.  Record for later use during GC.  */
         case R_SH_GNU_VTENTRY:
-          if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
+          BFD_ASSERT (h != NULL);
+          if (h != NULL
+              && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
             return FALSE;
           break;
 
@@ -2717,35 +2684,11 @@ sh_elf64_check_relocs (bfd *abfd, struct bfd_link_info *info,
                 section in dynobj and make room for this reloc.  */
              if (sreloc == NULL)
                {
-                 const char *name;
+                 sreloc = _bfd_elf_make_dynamic_reloc_section
+                   (sec, dynobj, 2, abfd, /*rela?*/ TRUE);
 
-                 name = (bfd_elf_string_from_elf_section
-                         (abfd,
-                          elf_elfheader (abfd)->e_shstrndx,
-                          elf_section_data (sec)->rel_hdr.sh_name));
-                 if (name == NULL)
-                   return FALSE;
-
-                 BFD_ASSERT (CONST_STRNEQ (name, ".rela")
-                             && strcmp (bfd_get_section_name (abfd, sec),
-                                        name + 5) == 0);
-
-                 sreloc = bfd_get_section_by_name (dynobj, name);
                  if (sreloc == NULL)
-                   {
-                     flagword flags;
-
-                     flags = (SEC_HAS_CONTENTS | SEC_READONLY
-                              | SEC_IN_MEMORY | SEC_LINKER_CREATED);
-                     if ((sec->flags & SEC_ALLOC) != 0)
-                       flags |= SEC_ALLOC | SEC_LOAD;
-                     sreloc = bfd_make_section_with_flags (dynobj,
-                                                           name,
-                                                           flags);
-                     if (sreloc == NULL
-                         || ! bfd_set_section_alignment (dynobj, sreloc, 2))
-                       return FALSE;
-                   }
+                   return FALSE;
                }
 
              sreloc->size += sizeof (Elf64_External_Rela);
@@ -2921,7 +2864,7 @@ sh64_elf64_add_symbol_hook (bfd *abfd, struct bfd_link_info *info,
    we don't need to look up and make sure to emit the main symbol for each
    DataLabel symbol.  */
 
-static bfd_boolean
+static int
 sh64_elf64_link_output_symbol_hook (struct bfd_link_info *info,
                                    const char *cname,
                                    Elf_Internal_Sym *sym,
@@ -2936,7 +2879,7 @@ sh64_elf64_link_output_symbol_hook (struct bfd_link_info *info,
        name[strlen (name) - strlen (DATALABEL_SUFFIX)] = 0;
     }
 
-  return TRUE;
+  return 1;
 }
 
 /* Set bit 0 on the entry address; it always points to SHmedia code.  This
@@ -3126,22 +3069,22 @@ sh64_elf64_link_hash_newfunc (struct bfd_hash_entry *entry,
 static struct bfd_link_hash_table *
 sh64_elf64_link_hash_table_create (bfd *abfd)
 {
-  struct elf_sh64_link_hash_table *ret;
+  struct elf_link_hash_table *ret;
 
-  ret = ((struct elf_sh64_link_hash_table *)
-        bfd_malloc (sizeof (struct elf_sh64_link_hash_table)));
-  if (ret == (struct elf_sh64_link_hash_table *) NULL)
+  ret = (struct elf_link_hash_table *) bfd_malloc (sizeof (* ret));
+  if (ret == (struct elf_link_hash_table *) NULL)
     return NULL;
 
-  if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
+  if (!_bfd_elf_link_hash_table_init (ret, abfd,
                                      sh64_elf64_link_hash_newfunc,
-                                     sizeof (struct elf_sh64_link_hash_entry)))
+                                     sizeof (struct elf_sh64_link_hash_entry),
+                                     GENERIC_ELF_DATA))
     {
       free (ret);
       return NULL;
     }
 
-  return &ret->root.root;
+  return &ret->root;
 }
 
 inline static void
@@ -3483,9 +3426,6 @@ sh64_elf64_discard_copies (struct elf_sh64_link_hash_entry *h,
 {
   struct elf_sh64_pcrel_relocs_copied *s;
 
-  if (h->root.root.type == bfd_link_hash_warning)
-    h = (struct elf_sh64_link_hash_entry *) h->root.root.u.i.link;
-
   /* We only discard relocs for symbols defined in a regular object.  */
   if (!h->root.def_regular)
     return TRUE;
@@ -3539,7 +3479,7 @@ sh64_elf64_size_dynamic_sections (bfd *output_bfd,
      We allocated space for them in the check_relocs routine, but we
      will not fill them in in the relocate_section routine.  */
   if (info->shared && info->symbolic)
-    sh64_elf64_link_hash_traverse (sh64_elf64_hash_table (info),
+    sh64_elf64_link_hash_traverse (elf_hash_table (info),
                                   sh64_elf64_discard_copies, NULL);
 
   /* The check_relocs and adjust_dynamic_symbol entry points have
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