Make bfd.link_next field a union

This field of struct bfd is currently only used to chain together
linker input files.  This patch prepares to use the field to stash
the linker hash table, which is always created on the linker output
file.

bfd/
	* bfd.c (struct bfd): Replace link_next with a union.
	* aoutx.h, * bfd.c, * coff-ppc.c, * coff-rs6000.c, * cofflink.c,
	* ecoff.c, * elf-m10300.c, * elf32-arm.c, * elf32-avr.c,
	* elf32-hppa.c, * elf32-i386.c, * elf32-lm32.c, * elf32-m32c.c,
	* elf32-m32r.c, * elf32-m68hc1x.c, * elf32-metag.c,
	* elf32-microblaze.c, * elf32-nds32.c, * elf32-nios2.c,
	* elf32-or1k.c, * elf32-ppc.c, * elf32-rl78.c, * elf32-s390.c,
	* elf32-score.c, * elf32-score7.c, * elf32-sh.c, * elf32-spu.c,
	* elf32-tic6x.c, * elf32-tilepro.c, * elf32-xstormy16.c,
	* elf32-xtensa.c, * elf64-alpha.c, * elf64-hppa.c, * elf64-ia64-vms.c,
	* elf64-mmix.c, * elf64-ppc.c, * elf64-s390.c, * elf64-x86-64.c,
	* elflink.c, * elfnn-aarch64.c, * elfxx-mips.c, * elfxx-sparc.c,
	* elfxx-tilegx.c, * linker.c, * pdp11.c, * peXXigen.c, * simple.c,
	* sunos.c, * vms-alpha.c, * xcofflink.c: Update for above.
	* bfd-in2.h: Regenerate.
include/
	* bfdlink.h: Update for bfd.link_next change.
ld/
	* emultempl/cr16elf.em, * emultempl/elf32.em, * emultempl/genelf.em,
	* emultempl/m68kcoff.em, * emultempl/m68kelf.em,
	* emultempl/nds32elf.em, * emultempl/pe.em, * emultempl/pep.em,
	* ldlang.c, * ldmain.c, * pe-dll.c: Update for bfd.link_next change.

1 files changed, 7 insertions, 7 deletions

diff --git a/bfd/xcofflink.c b/bfd/xcofflink.c
index ee90151..9841de6 100644
--- a/bfd/xcofflink.c
+++ b/bfd/xcofflink.c
@@ -2985,7 +2985,7 @@ xcoff_sweep (struct bfd_link_info *info)
 {
   bfd *sub;
 
-  for (sub = info->input_bfds; sub != NULL; sub = sub->link_next)
+  for (sub = info->input_bfds; sub != NULL; sub = sub->link.next)
     {
       asection *o;
 
@@ -3710,7 +3710,7 @@ bfd_xcoff_size_dynamic_sections (bfd *output_bfd,
 
       /* We still need to call xcoff_mark, in order to set ldrel_count
 	 correctly.  */
-      for (sub = info->input_bfds; sub != NULL; sub = sub->link_next)
+      for (sub = info->input_bfds; sub != NULL; sub = sub->link.next)
 	{
 	  asection *o;
 
@@ -3804,7 +3804,7 @@ bfd_xcoff_size_dynamic_sections (bfd *output_bfd,
      and figure out the contents of the .debug section.  */
   debug_strtab = xcoff_hash_table (info)->debug_strtab;
 
-  for (sub = info->input_bfds; sub != NULL; sub = sub->link_next)
+  for (sub = info->input_bfds; sub != NULL; sub = sub->link.next)
     {
       asection *subdeb;
       bfd_size_type symcount;
@@ -3973,7 +3973,7 @@ bfd_xcoff_link_generate_rtinit (bfd *abfd,
   bim->size = 0;
   bim->buffer = 0;
 
-  abfd->link_next = 0;
+  abfd->link.next = 0;
   abfd->format = bfd_object;
   abfd->iostream = (void *) bim;
   abfd->flags = BFD_IN_MEMORY;
@@ -5041,7 +5041,7 @@ xcoff_find_tc0 (bfd *output_bfd, struct xcoff_final_link_info *flinfo)
   section_index = -1;
   for (input_bfd = flinfo->info->input_bfds;
        input_bfd != NULL;
-       input_bfd = input_bfd->link_next)
+       input_bfd = input_bfd->link.next)
     for (sec = input_bfd->sections; sec != NULL; sec = sec->next)
       if ((sec->flags & SEC_MARK) != 0 && xcoff_toc_section_p (sec))
 	{
@@ -5073,7 +5073,7 @@ xcoff_find_tc0 (bfd *output_bfd, struct xcoff_final_link_info *flinfo)
       best_address = toc_end;
       for (input_bfd = flinfo->info->input_bfds;
 	   input_bfd != NULL;
-	   input_bfd = input_bfd->link_next)
+	   input_bfd = input_bfd->link.next)
 	for (sec = input_bfd->sections; sec != NULL; sec = sec->next)
 	  if ((sec->flags & SEC_MARK) != 0 && xcoff_toc_section_p (sec))
 	    {
@@ -6103,7 +6103,7 @@ _bfd_xcoff_bfd_final_link (bfd *abfd, struct bfd_link_info *info)
      input BFD's.  We want at least 6 symbols, since that is the
      number which xcoff_write_global_symbol may need.  */
   max_sym_count = 6;
-  for (sub = info->input_bfds; sub != NULL; sub = sub->link_next)
+  for (sub = info->input_bfds; sub != NULL; sub = sub->link.next)
     {
       bfd_size_type sz;