Orphan output section with multiple input sections

If given input sections with differing flags, we'd like to place the
section according to the final output section flags.

bfd/
	PR ld/19162
	* elflink.c (_bfd_elf_gc_mark_reloc): Move code iterating over
	linker input bfds..
	* section.c (bfd_get_next_section_by_name): ..to here.  Add ibfd param.
	(bfd_get_linker_section): Adjust bfd_get_next_section_by_name call.
	* tekhex.c (first_phase): Likewise.
	* elflink.c (bfd_elf_gc_sections): Likewise.
	* bfd-in2.h: Regenerate.
ld/
	PR ld/19162
	* emultempl/elf32.em (gld${EMULATION_NAME}_place_orphan): Check flags
	before calling _bfd_elf_match_sections_by_type.  Merge flags for
	any other input sections that might match a new output section to
	decide placement.

1 files changed, 16 insertions, 4 deletions

diff --git a/bfd/section.c b/bfd/section.c
index 834a9ab..247d98a 100644
--- a/bfd/section.c
+++ b/bfd/section.c
@@ -903,16 +903,18 @@ FUNCTION
        bfd_get_next_section_by_name
 
 SYNOPSIS
-       asection *bfd_get_next_section_by_name (asection *sec);
+       asection *bfd_get_next_section_by_name (bfd *ibfd, asection *sec);
 
 DESCRIPTION
        Given @var{sec} is a section returned by @code{bfd_get_section_by_name},
        return the next most recently created section attached to the same
-       BFD with the same name.  Return NULL if no such section exists.
+       BFD with the same name, or if no such section exists in the same BFD and
+       IBFD is non-NULL, the next section with the same name in any input
+       BFD following IBFD.  Return NULL on finding no section.
 */
 
 asection *
-bfd_get_next_section_by_name (asection *sec)
+bfd_get_next_section_by_name (bfd *ibfd, asection *sec)
 {
   struct section_hash_entry *sh;
   const char *name;
@@ -930,6 +932,16 @@ bfd_get_next_section_by_name (asection *sec)
        && strcmp (sh->root.string, name) == 0)
       return &sh->section;
 
+  if (ibfd != NULL)
+    {
+      while ((ibfd = ibfd->link.next) != NULL)
+	{
+	  asection *s = bfd_get_section_by_name (ibfd, name);
+	  if (s != NULL)
+	    return s;
+	}
+    }
+
   return NULL;
 }
 
@@ -951,7 +963,7 @@ bfd_get_linker_section (bfd *abfd, const char *name)
   asection *sec = bfd_get_section_by_name (abfd, name);
 
   while (sec != NULL && (sec->flags & SEC_LINKER_CREATED) == 0)
-    sec = bfd_get_next_section_by_name (sec);
+    sec = bfd_get_next_section_by_name (NULL, sec);
   return sec;
 }