PR ld/13909

	* elf-eh-frame.c (_bfd_elf_eh_frame_present): New function.
	(_bfd_elf_maybe_strip_eh_frame_hdr): Use it here.
	* elf-bfd.h (_bfd_elf_eh_frame_present): Declare.
	* elflink.c (bfd_elf_size_dynamic_sections): Let the backend
	size dynamic sections before stripping eh_frame_hdr.
	(bfd_elf_gc_sections): Handle multiple .eh_frame sections.
	* elf32-ppc.c (ppc_elf_size_dynamic_sections): Drop glink_eh_frame
	if no other .eh_frame sections exist.
	* elf64-ppc.c (ppc64_elf_size_stubs): Likewise.
	* elf32-i386.c (elf_i386_create_dynamic_sections): Don't size
	or alloc plt_eh_frame here..
	(elf_i386_size_dynamic_sections): ..do it here instead.  Don't
	specially keep sgotplt, iplt, tgotplt, sdynbss for symbols.
	(elf_i386_finish_dynamic_sections): Check plt_eh_frame->contents
	before writing plt offset.
	* elf64-x86-64.c (elf_x86_64_create_dynamic_sections): Don't size
	or alloc plt_eh_frame here..
	(elf_x86_64_size_dynamic_sections): ..do it here instead.
	(elf_x86_64_finish_dynamic_sections): Check plt_eh_frame->contents
	before writing plt offset.

1 files changed, 23 insertions, 24 deletions

diff --git a/bfd/elf-eh-frame.c b/bfd/elf-eh-frame.c
index 685540c..a75d806 100644
--- a/bfd/elf-eh-frame.c
+++ b/bfd/elf-eh-frame.c
@@ -1247,6 +1247,26 @@ _bfd_elf_discard_section_eh_frame_hdr (bfd *abfd, struct bfd_link_info *info)
   return TRUE;
 }
 
+/* Return true if there is at least one non-empty .eh_frame section in
+   input files.  Can only be called after ld has mapped input to
+   output sections, and before sections are stripped.  */
+bfd_boolean
+_bfd_elf_eh_frame_present (struct bfd_link_info *info)
+{
+  asection *eh = bfd_get_section_by_name (info->output_bfd, ".eh_frame");
+
+  if (eh == NULL)
+    return FALSE;
+
+  /* Count only sections which have at least a single CIE or FDE.
+     There cannot be any CIE or FDE <= 8 bytes.  */
+  for (eh = eh->map_head.s; eh != NULL; eh = eh->map_head.s)
+    if (eh->size > 8)
+      return TRUE;
+
+  return FALSE;
+}
+
 /* This function is called from size_dynamic_sections.
    It needs to decide whether .eh_frame_hdr should be output or not,
    because when the dynamic symbol table has been sized it is too late
@@ -1255,8 +1275,6 @@ _bfd_elf_discard_section_eh_frame_hdr (bfd *abfd, struct bfd_link_info *info)
 bfd_boolean
 _bfd_elf_maybe_strip_eh_frame_hdr (struct bfd_link_info *info)
 {
-  asection *o;
-  bfd *abfd;
   struct elf_link_hash_table *htab;
   struct eh_frame_hdr_info *hdr_info;
 
@@ -1265,28 +1283,9 @@ _bfd_elf_maybe_strip_eh_frame_hdr (struct bfd_link_info *info)
   if (hdr_info->hdr_sec == NULL)
     return TRUE;
 
-  if (bfd_is_abs_section (hdr_info->hdr_sec->output_section))
-    {
-      hdr_info->hdr_sec = NULL;
-      return TRUE;
-    }
-
-  abfd = NULL;
-  if (info->eh_frame_hdr)
-    for (abfd = info->input_bfds; abfd != NULL; abfd = abfd->link_next)
-      {
-	/* Count only sections which have at least a single CIE or FDE.
-	   There cannot be any CIE or FDE <= 8 bytes.  */
-	o = bfd_get_section_by_name (abfd, ".eh_frame");
-	while (o != NULL
-	       && (o->size <= 8
-		   || bfd_is_abs_section (o->output_section)))
-	  o = bfd_get_next_section_by_name (o);
-	if (o != NULL)
-	  break;
-      }
-
-  if (abfd == NULL)
+  if (bfd_is_abs_section (hdr_info->hdr_sec->output_section)
+      || !info->eh_frame_hdr
+      || !_bfd_elf_eh_frame_present (info))
     {
       hdr_info->hdr_sec->flags |= SEC_EXCLUDE;
       hdr_info->hdr_sec = NULL;