* elf-bfd.h (enum elf_reloc_type_class): New.

	(struct elf_backend_data): Add elf_backend_reloc_type_class.
	(_bfd_elf_reloc_type_class): New.
	* elfxx-target.h (elf_backend_reloc_type_class): Define.
	(elfNN_bed): Add elf_backend_reloc_type_class.
	* elf.c (_bfd_elf_reloc_type_class): New.
	* elf32-i386.c (elf_i386_check_relocs): Set DF_TEXTREL if the reloc
	is against read-only section.
	(elf_i386_size_dynamic_sections): Use DF_TEXTREL flag instead of
	looking up section names for DT_TEXTREL.
	(elf_i386_reloc_type_class): New.
	(elf_backend_reloc_type_class): Define.
	* elf32-sparc.c (elf32_sparc_check_relocs): Set DF_TEXTREL if the
	reloc is against read-only section.
	(elf32_sparc_size_dynamic_sections): Use DF_TEXTREL flag instead of
	looking up section names for DT_TEXTREL.
	(elf32_sparc_reloc_type_class): New.
	(elf_backend_reloc_type_class): Define.
	* elf64-sparc.c (sparc64_elf_check_relocs): Set DF_TEXTREL if the
	reloc is against read-only section.
	(sparc64_elf_size_dynamic_sections): Use DF_TEXTREL flag instead of
	looking up section names for DT_TEXTREL.
	(sparc64_elf_reloc_type_class): New.
	(elf_backend_reloc_type_class): Define.
	* elfxx-ia64.c (struct elfNN_ia64_link_hash_table): Add reltext field.
	(elfNN_ia64_hash_table_create): Clear ia64_info.
	(get_reloc_section): Set DF_TEXTREL if the reloc is against read-only
	section.
	(elfNN_ia64_size_dynamic_sections): Use ia64_info->reltext flag
	instead of looking up section names for DT_TEXTREL.
	(elfNN_ia64_reloc_type_class): New.
	(elf_backend_reloc_type_class): Define.
	* elflink.h (size_dynamic_sections): Add spare DT_NULL tags.
	(struct elf_link_sort_rela): New.
	(elf_link_sort_cmp1, elf_link_sort_cmp2, elf_link_sort_relocs): New.
	(elf_bfd_final_link): Call elf_link_sort_relocs.
	Convert one spare DT_NULL into DT_RELCOUNT resp. DT_RELACOUNT if
	necessary.

	* bfdlink.h (struct bfd_link_info): Add combreloc and
	spare_dynamic_tags fields.

	* emultempl/elf32.em (place_orphan): Place orphan .rel* sections
	into .rel.dyn resp. .rela.dyn if combreloc.
	(get_script): If .x linker script is equal to .xn, only put it
	once into the binary.
	Add .xc and .xsc scripts.
	(parse_args): Handle -z combreloc and -z nocombreloc.
	* scripttempl/elf.sc (.rela.sbss): Fix a typo.
	For .xc and .xsc scripts put all .rel* or .rela* input sections
	but .rel*.plt and PLT-like sections into .rel.dyn resp. .rela.dyn.
	* genscripts.sh (GENERATE_COMBRELOC_SCRIPT): Set if SCRIPT_NAME
	is elf.
	Strip trailing whitespace from script.
	Generate .xc and .xsc scripts if requested.
	* ldmain.c (main): Initialize link_info.combreloc and
	link_info.spare_dynamic_tags.
	* lexsup.c (OPTION_SPARE_DYNAMIC_TAGS): Define.
	(ld_options): Add --spare-dynamic-tags option.
	(parse_args): Likewise.
	* ld.texinfo: Document -z combreloc and -z nocombreloc.
	* ldint.texinfo: Document .xc and .xsc linker scripts.
	* NEWS: Add notes about -z combreloc and SHF_MERGE.

1 files changed, 23 insertions, 16 deletions

diff --git a/bfd/elf64-sparc.c b/bfd/elf64-sparc.c
index c4248f7..e121126 100644
--- a/bfd/elf64-sparc.c
+++ b/bfd/elf64-sparc.c
@@ -96,6 +96,7 @@ static boolean sparc64_elf_slurp_reloc_table
 static long sparc64_elf_canonicalize_dynamic_reloc
   PARAMS ((bfd *, arelent **, asymbol **));
 static void sparc64_elf_write_relocs PARAMS ((bfd *, asection *, PTR));
+static enum elf_reloc_type_class sparc64_elf_reloc_type_class PARAMS ((int));
 
 /* The relocation "howto" table.  */
 
@@ -1248,6 +1249,8 @@ sparc64_elf_check_relocs (abfd, info, sec, relocs)
 			  || ! bfd_set_section_alignment (dynobj, sreloc, 3))
 			return false;
 		    }
+		  if (sec->flags & SEC_READONLY)
+		    info->flags |= DF_TEXTREL;
 		}
 
 	      sreloc->_raw_size += sizeof (Elf64_External_Rela);
@@ -1666,7 +1669,6 @@ sparc64_elf_size_dynamic_sections (output_bfd, info)
 {
   bfd *dynobj;
   asection *s;
-  boolean reltext;
   boolean relplt;
 
   dynobj = elf_hash_table (info)->dynobj;
@@ -1698,7 +1700,6 @@ sparc64_elf_size_dynamic_sections (output_bfd, info)
   /* The check_relocs and adjust_dynamic_symbol entry points have
      determined the sizes of the various dynamic sections.  Allocate
      memory for them.  */
-  reltext = false;
   relplt = false;
   for (s = dynobj->sections; s != NULL; s = s->next)
     {
@@ -1731,18 +1732,6 @@ sparc64_elf_size_dynamic_sections (output_bfd, info)
 	    }
 	  else
 	    {
-	      const char *outname;
-	      asection *target;
-
-	      /* If this relocation section applies to a read only
-		 section, then we probably need a DT_TEXTREL entry.  */
-	      outname = bfd_get_section_name (output_bfd,
-					      s->output_section);
-	      target = bfd_get_section_by_name (output_bfd, outname + 5);
-	      if (target != NULL
-		  && (target->flags & SEC_READONLY) != 0)
-		reltext = true;
-
 	      if (strcmp (name, ".rela.plt") == 0)
 		relplt = true;
 
@@ -1805,11 +1794,10 @@ sparc64_elf_size_dynamic_sections (output_bfd, info)
 					    sizeof (Elf64_External_Rela)))
 	return false;
 
-      if (reltext)
+      if (info->flags & DF_TEXTREL)
 	{
 	  if (! bfd_elf64_add_dynamic_entry (info, DT_TEXTREL, 0))
 	    return false;
-	  info->flags |= DF_TEXTREL;
 	}
 
       /* Add dynamic STT_REGISTER symbols and corresponding DT_SPARC_REGISTER
@@ -2909,6 +2897,23 @@ sparc64_elf_finish_dynamic_sections (output_bfd, info)
 
   return true;
 }
+
+static enum elf_reloc_type_class
+sparc64_elf_reloc_type_class (type)
+     int type;
+{
+  switch (type)
+    {
+    case R_SPARC_RELATIVE:
+      return reloc_class_relative;
+    case R_SPARC_JMP_SLOT:
+      return reloc_class_plt;
+    case R_SPARC_COPY:
+      return reloc_class_copy;
+    default:
+      return reloc_class_normal;
+    }
+}
 
 /* Functions for dealing with the e_flags field.  */
 
@@ -3160,6 +3165,8 @@ const struct elf_size_info sparc64_elf_size_info =
   sparc64_elf_size_info
 #define elf_backend_object_p \
   sparc64_elf_object_p
+#define elf_backend_reloc_type_class \
+  sparc64_elf_reloc_type_class
 
 #define elf_backend_want_got_plt 0
 #define elf_backend_plt_readonly 0