* elf-bfd.h (struct bfd_elf_section_data): Add "group" and

	"next_in_group".  Fix gp and gp_size comments.
	* elf.c (union elf_internal_group): New.
	(setup_group): New function.
	(_bfd_elf_make_section_from_shdr): Set BFD flags for SHT_GROUP.
	Call setup_group for SHF_GROUP sections.
	(bfd_section_from_shdr): Build a BFD section for SHT_GROUP.
	(elf_fake_sections): Set header type for SEC_GROUP, and header
	flags for sections in a group.
	(set_group_contents): New function.
	(_bfd_elf_compute_section_file_positions): Call it.
	(assign_section_numbers): Set sh_link for SHT_GROUP.
	* elflink.h (gc_mark_hook): Handle section groups.
	* elfxx-target.h: Add SEC_GROUP to applicable_flags.
	* section.c (SEC_GROUP): Define.
	(struct sec): Comment fixes.
	* bfd-in2.h: Regenerate.

	* elf.c (bfd_elf_print_symbol): Formatting fix; migrate expression
	out of function args.
	(_bfd_elf_canonicalize_reloc): Similarly.
	(_bfd_elf_get_symtab): Here too.
	(_bfd_elf_canonicalize_dynamic_symtab): And here.
	* elfcode.h (elf_slurp_symbol_table): Don't recalculate size for
	bfd_bread, and remove unnecessary cast.

1 files changed, 11 insertions, 3 deletions

diff --git a/bfd/elflink.h b/bfd/elflink.h
index a8ffb0b..19fcea7 100644
--- a/bfd/elflink.h
+++ b/bfd/elflink.h
@@ -6878,7 +6878,8 @@ static boolean elf_gc_smash_unused_vtentry_relocs
   PARAMS ((struct elf_link_hash_entry *h, PTR dummy));
 
 /* The mark phase of garbage collection.  For a given section, mark
-   it, and all the sections which define symbols to which it refers.  */
+   it and any sections in this section's group, and all the sections
+   which define symbols to which it refers.  */
 
 static boolean
 elf_gc_mark (info, sec, gc_mark_hook)
@@ -6888,12 +6889,19 @@ elf_gc_mark (info, sec, gc_mark_hook)
        PARAMS ((bfd *, struct bfd_link_info *, Elf_Internal_Rela *,
 		struct elf_link_hash_entry *, Elf_Internal_Sym *));
 {
-  boolean ret = true;
+  boolean ret;
+  asection *group_sec;
 
   sec->gc_mark = 1;
 
-  /* Look through the section relocs.  */
+  /* Mark all the sections in the group.  */
+  group_sec = elf_section_data (sec)->next_in_group;
+  if (group_sec && !group_sec->gc_mark)
+    if (!elf_gc_mark (info, group_sec, gc_mark_hook))
+      return false;
 
+  /* Look through the section relocs.  */
+  ret = true;
   if ((sec->flags & SEC_RELOC) != 0 && sec->reloc_count > 0)
     {
       Elf_Internal_Rela *relstart, *rel, *relend;