* elflink.c (elf_mark_used_section): Delete.

	(bfd_elf_gc_sections): Call bfd_generic_gc_sections.
	* reloc.c (bfd_mark_used_section): New function.
	(bfd_generic_gc_sections): Call bfd_mark_used_section.

1 files changed, 28 insertions, 2 deletions

diff --git a/bfd/reloc.c b/bfd/reloc.c
index 078529d..207b775 100644
--- a/bfd/reloc.c
+++ b/bfd/reloc.c
@@ -4516,6 +4516,27 @@ bfd_generic_relax_section (bfd *abfd ATTRIBUTE_UNUSED,
   return TRUE;
 }
 
+/* Mark sections containing global symbols.  This is called through
+   bfd_link_hash_traverse.  */
+
+static bfd_boolean
+bfd_mark_used_section (struct bfd_link_hash_entry *h,
+		       void *data ATTRIBUTE_UNUSED)
+{
+  if (h->type == bfd_link_hash_warning)
+    h = h->u.i.link;
+
+  if (h->type == bfd_link_hash_defined
+      || h->type == bfd_link_hash_defweak)
+    {
+      asection *s = h->u.def.section;
+      if (s != NULL && s->output_section != NULL)
+	s->output_section->flags |= SEC_KEEP;
+    }
+
+  return TRUE;
+}
+
 /*
 INTERNAL_FUNCTION
 	bfd_generic_gc_sections
@@ -4526,13 +4547,18 @@ SYNOPSIS
 
 DESCRIPTION
 	Provides default handling for relaxing for back ends which
-	don't do section gc -- i.e., does nothing.
+	don't do section gc -- i.e., does nothing besides the special
+	case for marking sections having global symbols.
 */
 
 bfd_boolean
 bfd_generic_gc_sections (bfd *abfd ATTRIBUTE_UNUSED,
-			 struct bfd_link_info *link_info ATTRIBUTE_UNUSED)
+			 struct bfd_link_info *info)
 {
+  /* If called when info->gc_sections is 0, then mark all sections
+     containing global symbols with SEC_KEEP.  */
+  if (!info->gc_sections && !info->relocatable)
+    bfd_link_hash_traverse (info->hash, bfd_mark_used_section, NULL);
   return TRUE;
 }