Make 64k .sdata and .sdata2 sections work; fix typos

bfd/ChangeLog

@@ -1,3 +1,20 @@
+Mon Jan 22 18:45:51 1996  Michael Meissner  <meissner@tiktok.cygnus.com>
+
+	* elflink.h (elf_finish_pointer_linker_section): Don't allocate
+	memory here for contents.
+
+	* elf32-ppc.c (ppc_elf_relocate_section): Bump up _SDA_BASE_ and
+	_SDA2_BASE_ by 32768.
+	(ppc_elf_size_dynamic_sections): #if out PLT code which we haven't
+	started using.  Allocate contents for .sdata and .sdata2 sections
+	also.
+	(ppc_elf_check_relocs): Use bfd_get_section_name in debug message,
+	rather than _name.
+	(ppc_elf_finish_dynamic_symbol): Remove code that attempted to
+	size _SDA{,2}_BASE_.
+	(ppc_elf_relocate_section): Change how sdata{,2} relocations are
+	done.
+
 Mon Jan 22 08:52:04 1996  Doug Evans  <dje@charmed.cygnus.com>
 
 	* elflink.h (elf_finish_pointer_linker_section): Fix typo.

bfd/elf32-ppc.c

@@ -1270,6 +1270,7 @@ ppc_elf_create_linker_section (abfd, info, which)
 	  defaults.rel_name	  = ".rela.sdata";
 	  defaults.bss_name	  = ".sbss";
 	  defaults.sym_name	  = "_SDA_BASE_";
+	  defaults.sym_offset	  = 32768;
 	  break;
 
 	case LINKER_SECTION_SDATA2:	/* .sdata2/.sbss2 section */
@@ -1277,6 +1278,7 @@ ppc_elf_create_linker_section (abfd, info, which)
 	  defaults.rel_name	  = ".rela.sdata2";
 	  defaults.bss_name	  = ".sbss2";
 	  defaults.sym_name	  = "_SDA2_BASE_";
+	  defaults.sym_offset	  = 32768;
 	  break;
 	}
 
@@ -1399,6 +1401,7 @@ ppc_elf_size_dynamic_sections (output_bfd, info)
 
       strip = false;
 
+#if 0
       if (strncmp (name, ".rela", 5) == 0)
 	{
 	  if (s->_raw_size == 0)
@@ -1433,8 +1436,12 @@ ppc_elf_size_dynamic_sections (output_bfd, info)
 	      s->reloc_count = 0;
 	    }
 	}
-      else if (strcmp (name, ".plt") != 0
+      else
-	       && strcmp (name, ".got") != 0)
+#endif
+	if (strcmp (name, ".plt") != 0
+	    && strcmp (name, ".got") != 0
+	    && strcmp (name, ".sdata") != 0
+	    && strcmp (name, ".sdata2") != 0)
 	{
 	  /* It's not one of our sections, so don't allocate space.  */
 	  continue;
@@ -1549,7 +1556,8 @@ ppc_elf_check_relocs (abfd, info, sec, relocs)
     return true;
 
 #ifdef DEBUG
-  fprintf (stderr, "ppc_elf_check_relocs called for section %s\n", sec->name);
+  fprintf (stderr, "ppc_elf_check_relocs called for section %s\n",
+	   bfd_get_section_name (abfd, sec));
 #endif
 
   /* Create the linker generated sections all the time so that the special
@@ -1755,8 +1763,6 @@ ppc_elf_finish_dynamic_symbol (output_bfd, info, h, sym)
      Elf_Internal_Sym *sym;
 {
   bfd *dynobj;
-  elf_linker_section_t *sdata;
-  elf_linker_section_t *sdata2;
 
 #ifdef DEBUG
   fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s\n", h->root.root.string);
@@ -1764,8 +1770,6 @@ ppc_elf_finish_dynamic_symbol (output_bfd, info, h, sym)
 
   dynobj = elf_hash_table (info)->dynobj;
   BFD_ASSERT (dynobj != NULL);
-  sdata = elf_linker_section (dynobj, LINKER_SECTION_SDATA);
-  sdata2 = elf_linker_section (dynobj, LINKER_SECTION_SDATA2);
 
   if (h->plt_offset != (bfd_vma) -1)
     {
@@ -1843,45 +1847,6 @@ ppc_elf_finish_dynamic_symbol (output_bfd, info, h, sym)
       || strcmp (h->root.root.string, "_PROCEDURE_LINKAGE_TABLE_") == 0)
     sym->st_shndx = SHN_ABS;
 
-  /* If .sdata is larger than 32767, bump up _SDA_BASE_ by 32768 so that
-     we put off getting relocation overflows until it is > 65k.  Do the
-     same for .sdata2 and _SDA2_BASE_.  */
-  if (sdata && sdata->sym_hash == h
-      && (h->elf_link_hash_flags & ELF_LINK_HASH_DYNAMIC_ADJUSTED) == 0)
-    {
-      bfd_vma size = 0;
-      asection *s = bfd_get_section_by_name (output_bfd, ".sdata");
-      if (s)
-	size = s->_raw_size;
-
-      s = bfd_get_section_by_name (output_bfd, ".sbss");
-      if (s)
-	size += s->_raw_size;
-
-      if (size > 32767)
-	h->root.u.def.value += 32768;
-
-      h->elf_link_hash_flags |= ELF_LINK_HASH_DYNAMIC_ADJUSTED;
-    }
-
-  if (sdata2 && sdata2->sym_hash == h
-      && (h->elf_link_hash_flags & ELF_LINK_HASH_DYNAMIC_ADJUSTED) == 0)
-    {
-      bfd_vma size = 0;
-      asection *s = bfd_get_section_by_name (output_bfd, ".sdata2");
-      if (s)
-	size = s->_raw_size;
-
-      s = bfd_get_section_by_name (output_bfd, ".sbss2");
-      if (s)
-	size += s->_raw_size;
-
-      if (size > 32767)
-	h->root.u.def.value += 32768;
-
-      h->elf_link_hash_flags |= ELF_LINK_HASH_DYNAMIC_ADJUSTED;
-    }
-
   return true;
 }
 
@@ -2274,11 +2239,11 @@ ppc_elf_relocate_section (output_bfd, info, input_bfd, input_section,
 	      ret = false;
 	      continue;
 	    }
-	  relocation = (sdata->sym_hash->root.u.def.value
+	  addend -= sdata->sym_hash->root.u.def.value;
-			+ sdata->sym_hash->root.u.def.section->output_section->vma
+	  relocation = sdata->sym_hash->root.u.def.section->output_section->vma - relocation;
-			- relocation);
 	  break;
 
+
 	/* relocate against _SDA2_BASE_ */
 	case (int)R_PPC_EMB_SDA2REL:
 	  BFD_ASSERT (sec != (asection *)0);
@@ -2294,9 +2259,8 @@ ppc_elf_relocate_section (output_bfd, info, input_bfd, input_section,
 	      ret = false;
 	      continue;
 	    }
-	  relocation = (sdata2->sym_hash->root.u.def.value
+	  addend -= sdata2->sym_hash->root.u.def.value;
-			+ sdata2->sym_hash->root.u.def.section->output_section->vma
+	  relocation = sdata2->sym_hash->root.u.def.section->output_section->vma - relocation;
-			- relocation);
 	  break;
 
 
@@ -2311,17 +2275,15 @@ ppc_elf_relocate_section (output_bfd, info, input_bfd, input_section,
 	    if (strcmp (name, ".sdata") == 0 || strcmp (name, ".sbss") == 0)
 	      {
 		reg = 13;
-		relocation = (sdata->sym_hash->root.u.def.value
+		addend -= sdata->sym_hash->root.u.def.value;
-			      + sdata->sym_hash->root.u.def.section->output_section->vma
+		relocation = sdata->sym_hash->root.u.def.section->output_section->vma - relocation;
-			      - relocation);
 	      }
 
 	    else if (strcmp (name, ".sdata2") == 0 || strcmp (name, ".sbss2") == 0)
 	      {
 		reg = 2;
-		relocation = (sdata2->sym_hash->root.u.def.value
+		addend -= sdata2->sym_hash->root.u.def.value;
-			      + sdata2->sym_hash->root.u.def.section->output_section->vma
+		relocation = sdata2->sym_hash->root.u.def.section->output_section->vma - relocation;
-			      - relocation);
 	      }
 
 	    else if (strcmp (name, ".PPC.EMB.sdata0") == 0 || strcmp (name, ".PPC.EMB.sbss0") == 0)

bfd/elflink.h

@@ -3208,7 +3208,7 @@ elf_create_pointer_linker_section (abfd, info, lsect, h, rel)
       if (info->shared)
 	{
 	  /* If we are generating a shared object, we need to
-	     output a R_PPC_RELATIVE reloc so that the
+	     output a R_<xxx>_RELATIVE reloc so that the
 	     dynamic linker can adjust this GOT entry.  */
 	  BFD_ASSERT (lsect->rel_section != NULL);
 	  lsect->rel_section->_raw_size += sizeof (Elf_External_Rela);
@@ -3276,10 +3276,6 @@ elf_finish_pointer_linker_section (output_bfd, input_bfd, info, lsect, h, reloca
 
   BFD_ASSERT (lsect != NULL);
 
-  if (!lsect->section->contents)
-    lsect->section->contents = (unsigned char *) bfd_zalloc (output_bfd,
-							     lsect->section->_raw_size);
-
   if (h != NULL)		/* global symbol */
     {
       linker_section_ptr = _bfd_elf_find_pointer_linker_section (h->linker_section_pointer,