* Contribute Hitachi SH5 simulator.
[deliverable/binutils-gdb.git] / bfd / elf32-m68k.c
index 80613f11e4395a77d107442e1e9c268a88311272..7fcaf6a5889c78c75e7a209c762ec6907ee4b8da 100644 (file)
@@ -57,8 +57,6 @@ static boolean elf_m68k_finish_dynamic_sections
 
 static boolean elf32_m68k_set_private_flags
   PARAMS ((bfd *, flagword));
-static boolean elf32_m68k_copy_private_bfd_data
-  PARAMS ((bfd *, bfd *));
 static boolean elf32_m68k_merge_private_bfd_data
   PARAMS ((bfd *, bfd *));
 static boolean elf32_m68k_print_private_bfd_data
@@ -367,26 +365,6 @@ elf32_m68k_set_private_flags (abfd, flags)
   return true;
 }
 
-/* Copy m68k-specific data from one module to another */
-static boolean
-elf32_m68k_copy_private_bfd_data (ibfd, obfd)
-     bfd *ibfd;
-     bfd *obfd;
-{
-  flagword in_flags;
-
-  if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
-      || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
-    return true;
-
-  in_flags = elf_elfheader (ibfd)->e_flags;
-
-  elf_elfheader (obfd)->e_flags = in_flags;
-  elf_flags_init (obfd) = true;
-
-  return true;
-}
-
 /* Merge backend specific data from an object file to the output
    object file when linking.  */
 static boolean
@@ -534,10 +512,8 @@ elf_m68k_check_relocs (abfd, info, sec, relocs)
 
          if (h != NULL)
            {
-             if (h->got.refcount == -1)
+             if (h->got.refcount == 0)
                {
-                 h->got.refcount = 1;
-
                  /* Make sure this symbol is output as a dynamic symbol.  */
                  if (h->dynindx == -1)
                    {
@@ -550,8 +526,7 @@ elf_m68k_check_relocs (abfd, info, sec, relocs)
                  /* Allocate relocation space.  */
                  srelgot->_raw_size += sizeof (Elf32_External_Rela);
                }
-             else
-               h->got.refcount++;
+             h->got.refcount++;
            }
          else
            {
@@ -563,16 +538,13 @@ elf_m68k_check_relocs (abfd, info, sec, relocs)
                  size = symtab_hdr->sh_info;
                  size *= sizeof (bfd_signed_vma);
                  local_got_refcounts = ((bfd_signed_vma *)
-                                        bfd_alloc (abfd, size));
+                                        bfd_zalloc (abfd, size));
                  if (local_got_refcounts == NULL)
                    return false;
                  elf_local_got_refcounts (abfd) = local_got_refcounts;
-                 memset (local_got_refcounts, -1, (size_t) size);
                }
-             if (local_got_refcounts[r_symndx] == -1)
+             if (local_got_refcounts[r_symndx] == 0)
                {
-                 local_got_refcounts[r_symndx] = 1;
-
                  sgot->_raw_size += 4;
                  if (info->shared)
                    {
@@ -582,8 +554,7 @@ elf_m68k_check_relocs (abfd, info, sec, relocs)
                      srelgot->_raw_size += sizeof (Elf32_External_Rela);
                    }
                }
-             else
-               local_got_refcounts[r_symndx]++;
+             local_got_refcounts[r_symndx]++;
            }
          break;
 
@@ -603,10 +574,7 @@ elf_m68k_check_relocs (abfd, info, sec, relocs)
            continue;
 
          h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
-         if (h->plt.refcount == -1)
-           h->plt.refcount = 1;
-         else
-           h->plt.refcount++;
+         h->plt.refcount++;
          break;
 
        case R_68K_PLT8O:
@@ -631,10 +599,7 @@ elf_m68k_check_relocs (abfd, info, sec, relocs)
            }
 
          h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
-         if (h->plt.refcount == -1)
-           h->plt.refcount = 1;
-         else
-           h->plt.refcount++;
+         h->plt.refcount++;
          break;
 
        case R_68K_PC8:
@@ -662,10 +627,7 @@ elf_m68k_check_relocs (abfd, info, sec, relocs)
                  /* Make sure a plt entry is created for this symbol if
                     it turns out to be a function defined by a dynamic
                     object.  */
-                 if (h->plt.refcount == -1)
-                   h->plt.refcount = 1;
-                 else
-                   h->plt.refcount++;
+                 h->plt.refcount++;
                }
              break;
            }
@@ -677,10 +639,7 @@ elf_m68k_check_relocs (abfd, info, sec, relocs)
            {
              /* Make sure a plt entry is created for this symbol if it
                 turns out to be a function defined by a dynamic object.  */
-             if (h->plt.refcount == -1)
-               h->plt.refcount = 1;
-             else
-               h->plt.refcount++;
+             h->plt.refcount++;
            }
 
          /* If we are creating a shared library, we need to copy the
@@ -824,13 +783,7 @@ elf_m68k_gc_mark_hook (abfd, info, rel, h, sym)
     }
   else
     {
-      if (!(elf_bad_symtab (abfd)
-           && ELF_ST_BIND (sym->st_info) != STB_LOCAL)
-         && ! ((sym->st_shndx <= 0 || sym->st_shndx >= SHN_LORESERVE)
-               && sym->st_shndx != SHN_COMMON))
-       {
-         return bfd_section_from_elf_index (abfd, sym->st_shndx);
-       }
+      return bfd_section_from_elf_index (abfd, sym->st_shndx);
     }
 
   return NULL;
@@ -1408,9 +1361,7 @@ elf_m68k_relocate_section (output_bfd, info, input_bfd, input_section,
        {
          sym = local_syms + r_symndx;
          sec = local_sections[r_symndx];
-         relocation = (sec->output_section->vma
-                       + sec->output_offset
-                       + sym->st_value);
+         relocation = _bfd_elf_rela_local_sym (output_bfd, sym, sec, rel);
        }
       else
        {
@@ -1663,6 +1614,7 @@ elf_m68k_relocate_section (output_bfd, info, input_bfd, input_section,
        case R_68K_16:
        case R_68K_32:
          if (info->shared
+             && r_symndx != 0
              && (input_section->flags & SEC_ALLOC) != 0
              && ((r_type != R_68K_PC8
                   && r_type != R_68K_PC16
@@ -1700,22 +1652,11 @@ elf_m68k_relocate_section (output_bfd, info, input_bfd, input_section,
 
              skip = false;
 
-             if (elf_section_data (input_section)->stab_info == NULL)
-               outrel.r_offset = rel->r_offset;
-             else
-               {
-                 bfd_vma off;
-
-                 off = (_bfd_stab_section_offset
-                        (output_bfd, &elf_hash_table (info)->stab_info,
-                         input_section,
-                         &elf_section_data (input_section)->stab_info,
-                         rel->r_offset));
-                 if (off == (bfd_vma) -1)
-                   skip = true;
-                 outrel.r_offset = off;
-               }
-
+             outrel.r_offset =
+               _bfd_elf_section_offset (output_bfd, info, input_section,
+                                        rel->r_offset);
+             if (outrel.r_offset == (bfd_vma) -1)
+               skip = true;
              outrel.r_offset += (input_section->output_section->vma
                                  + input_section->output_offset);
 
@@ -2185,8 +2126,10 @@ bfd_m68k_elf32_create_embedded_relocs (abfd, info, datasec, relsec, errmsg)
      char **errmsg;
 {
   Elf_Internal_Shdr *symtab_hdr;
+  Elf_Internal_Shdr *shndx_hdr;
   Elf32_External_Sym *extsyms;
   Elf32_External_Sym *free_extsyms = NULL;
+  Elf_External_Sym_Shndx *shndx_buf = NULL;
   Elf_Internal_Rela *internal_relocs;
   Elf_Internal_Rela *free_relocs = NULL;
   Elf_Internal_Rela *irel, *irelend;
@@ -2208,20 +2151,32 @@ bfd_m68k_elf32_create_embedded_relocs (abfd, info, datasec, relsec, errmsg)
   else
     {
       /* Go get them off disk.  */
+      amt = symtab_hdr->sh_info * sizeof (Elf32_External_Sym);
       if (info->keep_memory)
-       extsyms = (Elf32_External_Sym *) bfd_alloc (abfd, symtab_hdr->sh_size);
+       extsyms = (Elf32_External_Sym *) bfd_alloc (abfd, amt);
       else
-       extsyms = (Elf32_External_Sym *) bfd_malloc (symtab_hdr->sh_size);
+       extsyms = (Elf32_External_Sym *) bfd_malloc (amt);
       if (extsyms == NULL)
        goto error_return;
       if (! info->keep_memory)
        free_extsyms = extsyms;
       if (bfd_seek (abfd, symtab_hdr->sh_offset, SEEK_SET) != 0
-         || (bfd_bread (extsyms, symtab_hdr->sh_size, abfd)
-             != symtab_hdr->sh_size))
+         || bfd_bread (extsyms, amt, abfd) != amt)
        goto error_return;
       if (info->keep_memory)
-       symtab_hdr->contents = extsyms;
+       symtab_hdr->contents = (unsigned char *) extsyms;
+    }
+
+  shndx_hdr = &elf_tdata (abfd)->symtab_shndx_hdr;
+  if (shndx_hdr->sh_size != 0)
+    {
+      amt = symtab_hdr->sh_info * sizeof (Elf_External_Sym_Shndx);
+      shndx_buf = (Elf_External_Sym_Shndx *) bfd_malloc (amt);
+      if (shndx_buf == NULL)
+       goto error_return;
+      if (bfd_seek (abfd, shndx_hdr->sh_offset, SEEK_SET) != 0
+         || bfd_bread ((PTR) shndx_buf, amt, abfd) != amt)
+       goto error_return;
     }
 
   /* Get a copy of the native relocations.  */
@@ -2262,12 +2217,14 @@ bfd_m68k_elf32_create_embedded_relocs (abfd, info, datasec, relsec, errmsg)
       /* Get the target section referred to by the reloc.  */
       if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
        {
+         Elf32_External_Sym *esym;
+         Elf_External_Sym_Shndx *shndx;
          Elf_Internal_Sym isym;
 
          /* A local symbol.  */
-         bfd_elf32_swap_symbol_in (abfd,
-                                   extsyms + ELF32_R_SYM (irel->r_info),
-                                   &isym);
+         esym = extsyms + ELF32_R_SYM (irel->r_info);
+         shndx = shndx_buf + (shndx_buf ? ELF32_R_SYM (irel->r_info) : 0);
+         bfd_elf32_swap_symbol_in (abfd, esym, shndx, &isym);
 
          targetsec = bfd_section_from_elf_index (abfd, isym.st_shndx);
        }
@@ -2293,6 +2250,8 @@ bfd_m68k_elf32_create_embedded_relocs (abfd, info, datasec, relsec, errmsg)
        strncpy (p + 4, targetsec->output_section->name, 8);
     }
 
+  if (shndx_buf != NULL)
+    free (shndx_buf);
   if (free_extsyms != NULL)
     free (free_extsyms);
   if (free_relocs != NULL)
@@ -2300,6 +2259,8 @@ bfd_m68k_elf32_create_embedded_relocs (abfd, info, datasec, relsec, errmsg)
   return true;
 
 error_return:
+  if (shndx_buf != NULL)
+    free (shndx_buf);
   if (free_extsyms != NULL)
     free (free_extsyms);
   if (free_relocs != NULL)
@@ -2346,8 +2307,6 @@ elf32_m68k_reloc_type_class (rela)
                                        elf_m68k_finish_dynamic_sections
 #define elf_backend_gc_mark_hook       elf_m68k_gc_mark_hook
 #define elf_backend_gc_sweep_hook      elf_m68k_gc_sweep_hook
-#define bfd_elf32_bfd_copy_private_bfd_data \
-                                        elf32_m68k_copy_private_bfd_data
 #define bfd_elf32_bfd_merge_private_bfd_data \
                                         elf32_m68k_merge_private_bfd_data
 #define bfd_elf32_bfd_set_private_flags \
@@ -2357,6 +2316,7 @@ elf32_m68k_reloc_type_class (rela)
 #define elf_backend_reloc_type_class   elf32_m68k_reloc_type_class
 
 #define elf_backend_can_gc_sections 1
+#define elf_backend_can_refcount 1
 #define elf_backend_want_got_plt 1
 #define elf_backend_plt_readonly 1
 #define elf_backend_want_plt_sym 0
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