[PATCH] ld: Add ehdr_start to bfd_link_hash_entry

[H.J. Lu]

__ehdr_start is a special symbol which is undefined during link.  It
becomes defined almost at the last minute if it is referenced.  Add
ehdr_start to bfd_link_hash_entry for __ehdr_start so that ELF linker
can properly handle it.

include/

	* bfdlink.h (bfd_link_hash_entry): Add ehdr_start.

ld/

	* ldelf.c (ldelf_before_allocation): Set ehdr_start for
	__ehdr_start.
---
 include/bfdlink.h | 3 +++
 ld/ldelf.c        | 1 +
 2 files changed, 4 insertions(+)

diff --git a/include/bfdlink.h b/include/bfdlink.h
index f3a52b04026..073baa64fb1 100644
--- a/include/bfdlink.h
+++ b/include/bfdlink.h
@@ -121,6 +121,9 @@ struct bfd_link_hash_entry
   /* Symbol defined in a linker script.  */
   unsigned int ldscript_def : 1;
 
+  /* This the special ELF symbol: __ehdr_start.  */
+  unsigned int ehdr_start : 1;
+
   /* Symbol will be converted from absolute to section-relative.  Set for
      symbols defined by a script from "dot" (also SEGMENT_START or ORIGIN)
      outside of an output section statement.  */
diff --git a/ld/ldelf.c b/ld/ldelf.c
index 202c43a58ef..dc317be290a 100644
--- a/ld/ldelf.c
+++ b/ld/ldelf.c
@@ -1617,6 +1617,7 @@ ldelf_before_allocation (char *audit, char *depaudit,
 	      ehdr_start->type = bfd_link_hash_defined;
 	      /* It will be converted to section-relative later.  */
 	      ehdr_start->rel_from_abs = 1;
+	      ehdr_start->ehdr_start = 1;
 	      ehdr_start->u.def.section = bfd_abs_section_ptr;
 	      ehdr_start->u.def.value = 0;
 	    }
-- 
2.33.1