* elfxx-target.h: Remove PTR cast.

	* targets.c (bfd_target): Make backend_data const void *.
	* elf-bfd.h: Constify all occurrences of struct elf_backend_data.
	* elf-m10300.c: Likewise.
	* elf.c: Likewise.
	* elf32-hppa.c: Likewise.
	* elf32-i386.c: Likewise.
	* elf32-m68hc1x.c: Likewise.
	* elf32-ppc.c: Likewise.
	* elf32-s390.c: Likewise.
	* elf32-sh.c: Likewise.
	* elf32-sh64.c: Likewise.
	* elf32-sparc.c: Likewise.
	* elf32-xtensa.c: Likewise.
	* elf64-mips.c: Likewise.
	* elf64-ppc.c: Likewise.
	* elf64-s390.c: Likewise.
	* elf64-sh64.c: Likewise.
	* elf64-sparc.c: Likewise.
	* elf64-x86-64.c: Likewise.
	* elfcode.h: Likewise.
	* elfcore.h: Likewise.
	* elflink.c: Likewise.
	* elflink.h: Likewise.
	* elfxx-ia64.c: Likewise.
	* elfxx-mips.c: Likewise.
	* elfxx-mips.h: Likewise.
	* elf.c (prep_headers): Remove useless check for null backend_data.
	* bfd-in2.h: Regenerate.

29 files changed, 137 insertions, 107 deletions

diff --git a/bfd/ChangeLog b/bfd/ChangeLog
index 3fabd26..13bfca6 100644
--- a/bfd/ChangeLog
+++ b/bfd/ChangeLog
@@ -1,5 +1,35 @@
 2003-08-07  Alan Modra  <amodra@bigpond.net.au>
 
+	* elfxx-target.h: Remove PTR cast.
+	* targets.c (bfd_target): Make backend_data const void *.
+	* elf-bfd.h: Constify all occurrences of struct elf_backend_data.
+	* elf-m10300.c: Likewise.
+	* elf.c: Likewise.
+	* elf32-hppa.c: Likewise.
+	* elf32-i386.c: Likewise.
+	* elf32-m68hc1x.c: Likewise.
+	* elf32-ppc.c: Likewise.
+	* elf32-s390.c: Likewise.
+	* elf32-sh.c: Likewise.
+	* elf32-sh64.c: Likewise.
+	* elf32-sparc.c: Likewise.
+	* elf32-xtensa.c: Likewise.
+	* elf64-mips.c: Likewise.
+	* elf64-ppc.c: Likewise.
+	* elf64-s390.c: Likewise.
+	* elf64-sh64.c: Likewise.
+	* elf64-sparc.c: Likewise.
+	* elf64-x86-64.c: Likewise.
+	* elfcode.h: Likewise.
+	* elfcore.h: Likewise.
+	* elflink.c: Likewise.
+	* elflink.h: Likewise.
+	* elfxx-ia64.c: Likewise.
+	* elfxx-mips.c: Likewise.
+	* elfxx-mips.h: Likewise.
+	* elf.c (prep_headers): Remove useless check for null backend_data.
+	* bfd-in2.h: Regenerate.
+
 	* elf-bfd.h: Remove PARAMS macro.  Replace PTR with void *.
 	(NAME): Use ## rather than CONCAT4 macro.
 	* elfcode.h: Remove one remaining PARAMS macro.
diff --git a/bfd/bfd-in2.h b/bfd/bfd-in2.h
index 11d4e90..0479814 100644
--- a/bfd/bfd-in2.h
+++ b/bfd/bfd-in2.h
@@ -4339,7 +4339,7 @@ typedef struct bfd_target
 
   /* Data for use by back-end routines, which isn't
      generic enough to belong in this structure.  */
-  void *backend_data;
+  const void *backend_data;
 
 } bfd_target;
 
diff --git a/bfd/elf-bfd.h b/bfd/elf-bfd.h
index 02cb302..93f265f 100644
--- a/bfd/elf-bfd.h
+++ b/bfd/elf-bfd.h
@@ -800,7 +800,7 @@ struct elf_backend_data
      newly created and plt/got refcounts and dynamic indices should not
      be copied.  */
   void (*elf_backend_copy_indirect_symbol)
-    (struct elf_backend_data *, struct elf_link_hash_entry *,
+    (const struct elf_backend_data *, struct elf_link_hash_entry *,
      struct elf_link_hash_entry *);
 
   /* Modify any information related to dynamic linking such that the
@@ -1029,7 +1029,7 @@ struct bfd_elf_section_data
    && sec->sec_info_type != ELF_INFO_TYPE_JUST_SYMS)
 
 #define get_elf_backend_data(abfd) \
-  ((struct elf_backend_data *) (abfd)->xvec->backend_data)
+  ((const struct elf_backend_data *) (abfd)->xvec->backend_data)
 
 /* This struct is used to pass information to routines called via
    elf_link_hash_traverse which must return failure.  */
@@ -1319,7 +1319,7 @@ extern struct bfd_hash_entry *_bfd_elf_link_hash_newfunc
 extern struct bfd_link_hash_table *_bfd_elf_link_hash_table_create
   (bfd *);
 extern void _bfd_elf_link_hash_copy_indirect
-  (struct elf_backend_data *, struct elf_link_hash_entry *,
+  (const struct elf_backend_data *, struct elf_link_hash_entry *,
    struct elf_link_hash_entry *);
 extern void _bfd_elf_link_hash_hide_symbol
   (struct bfd_link_info *, struct elf_link_hash_entry *, bfd_boolean);
diff --git a/bfd/elf-m10300.c b/bfd/elf-m10300.c
index 0d68fe5..212fde7 100644
--- a/bfd/elf-m10300.c
+++ b/bfd/elf-m10300.c
@@ -562,7 +562,7 @@ _bfd_mn10300_elf_create_got_section (abfd, info)
   flagword   pltflags;
   asection * s;
   struct elf_link_hash_entry * h;
-  struct elf_backend_data *    bed = get_elf_backend_data (abfd);
+  const struct elf_backend_data * bed = get_elf_backend_data (abfd);
   int ptralign;
 
   /* This function may be called more than once.  */
@@ -4049,7 +4049,7 @@ _bfd_mn10300_elf_create_dynamic_sections (abfd, info)
 {
   flagword   flags;
   asection * s;
-  struct elf_backend_data * bed = get_elf_backend_data (abfd);
+  const struct elf_backend_data * bed = get_elf_backend_data (abfd);
   int ptralign = 0;
 
   switch (bed->s->arch_size)
diff --git a/bfd/elf.c b/bfd/elf.c
index 33848a2..3868cff 100644
--- a/bfd/elf.c
+++ b/bfd/elf.c
@@ -325,7 +325,7 @@ bfd_elf_get_elf_syms (bfd *ibfd,
   Elf_External_Sym_Shndx *shndx;
   Elf_Internal_Sym *isym;
   Elf_Internal_Sym *isymend;
-  struct elf_backend_data *bed;
+  const struct elf_backend_data *bed;
   size_t extsym_size;
   bfd_size_type amt;
   file_ptr pos;
@@ -638,7 +638,7 @@ _bfd_elf_make_section_from_shdr (bfd *abfd,
 {
   asection *newsect;
   flagword flags;
-  struct elf_backend_data *bed;
+  const struct elf_backend_data *bed;
 
   if (hdr->bfd_section != NULL)
     {
@@ -1193,7 +1193,7 @@ bfd_elf_print_symbol (bfd *abfd,
       {
 	const char *section_name;
 	const char *name = NULL;
-	struct elf_backend_data *bed;
+	const struct elf_backend_data *bed;
 	unsigned char st_other;
 	bfd_vma val;
 
@@ -1344,7 +1344,7 @@ _bfd_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
    old indirect symbol.  Also used for copying flags to a weakdef.  */
 
 void
-_bfd_elf_link_hash_copy_indirect (struct elf_backend_data *bed,
+_bfd_elf_link_hash_copy_indirect (const struct elf_backend_data *bed,
 				  struct elf_link_hash_entry *dir,
 				  struct elf_link_hash_entry *ind)
 {
@@ -1649,7 +1649,7 @@ bfd_section_from_shdr (bfd *abfd, unsigned int shindex)
 {
   Elf_Internal_Shdr *hdr = elf_elfsections (abfd)[shindex];
   Elf_Internal_Ehdr *ehdr = elf_elfheader (abfd);
-  struct elf_backend_data *bed = get_elf_backend_data (abfd);
+  const struct elf_backend_data *bed = get_elf_backend_data (abfd);
   const char *name;
 
   name = elf_string_from_elf_strtab (abfd, hdr->sh_name);
@@ -2123,13 +2123,13 @@ bfd_boolean
 _bfd_elf_get_sec_type_attr (bfd *abfd, const char *name, int *type, int *attr)
 {
   bfd_boolean found = FALSE;
-  struct elf_backend_data *bed = get_elf_backend_data (abfd);
+  const struct elf_backend_data *bed = get_elf_backend_data (abfd);
 
   /* See if this is one of the special sections.  */
   if (name)
     {
       const struct bfd_elf_special_section *ssect = NULL;
-      unsigned int rela = get_elf_backend_data (abfd)->default_use_rela_p;
+      unsigned int rela = bed->default_use_rela_p;
 
       if (bed->special_sections)
 	ssect = get_special_section (name, bed->special_sections, rela);
@@ -2274,7 +2274,7 @@ _bfd_elf_make_section_from_phdr (bfd *abfd,
 bfd_boolean
 bfd_section_from_phdr (bfd *abfd, Elf_Internal_Phdr *hdr, int index)
 {
-  struct elf_backend_data *bed;
+  const struct elf_backend_data *bed;
 
   switch (hdr->p_type)
     {
@@ -2332,7 +2332,7 @@ _bfd_elf_init_reloc_shdr (bfd *abfd,
 			  bfd_boolean use_rela_p)
 {
   char *name;
-  struct elf_backend_data *bed = get_elf_backend_data (abfd);
+  const struct elf_backend_data *bed = get_elf_backend_data (abfd);
   bfd_size_type amt = sizeof ".rela" + strlen (asect->name);
 
   name = bfd_alloc (abfd, amt);
@@ -2362,7 +2362,7 @@ _bfd_elf_init_reloc_shdr (bfd *abfd,
 static void
 elf_fake_sections (bfd *abfd, asection *asect, void *failedptrarg)
 {
-  struct elf_backend_data *bed = get_elf_backend_data (abfd);
+  const struct elf_backend_data *bed = get_elf_backend_data (abfd);
   bfd_boolean *failedptr = failedptrarg;
   Elf_Internal_Shdr *this_hdr;
 
@@ -2872,7 +2872,7 @@ static int
 sym_is_global (bfd *abfd, asymbol *sym)
 {
   /* If the backend has a special mapping, use it.  */
-  struct elf_backend_data *bed = get_elf_backend_data (abfd);
+  const struct elf_backend_data *bed = get_elf_backend_data (abfd);
   if (bed->elf_backend_sym_is_global)
     return (*bed->elf_backend_sym_is_global) (abfd, sym);
 
@@ -3066,7 +3066,7 @@ bfd_boolean
 _bfd_elf_compute_section_file_positions (bfd *abfd,
 					 struct bfd_link_info *link_info)
 {
-  struct elf_backend_data *bed = get_elf_backend_data (abfd);
+  const struct elf_backend_data *bed = get_elf_backend_data (abfd);
   bfd_boolean failed;
   struct bfd_strtab_hash *strtab;
   Elf_Internal_Shdr *shstrtab_hdr;
@@ -4059,7 +4059,7 @@ get_program_header_size (bfd *abfd)
 {
   size_t segs;
   asection *s;
-  struct elf_backend_data *bed = get_elf_backend_data (abfd);
+  const struct elf_backend_data *bed = get_elf_backend_data (abfd);
 
   /* We can't return a different result each time we're called.  */
   if (elf_tdata (abfd)->program_header_size != 0)
@@ -4162,7 +4162,7 @@ assign_file_positions_except_relocs (bfd *abfd)
   Elf_Internal_Shdr ** const i_shdrpp = elf_elfsections (abfd);
   unsigned int num_sec = elf_numsections (abfd);
   file_ptr off;
-  struct elf_backend_data *bed = get_elf_backend_data (abfd);
+  const struct elf_backend_data *bed = get_elf_backend_data (abfd);
 
   if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0
       && bfd_get_format (abfd) != bfd_core)
@@ -4269,7 +4269,7 @@ prep_headers (bfd *abfd)
   Elf_Internal_Phdr *i_phdrp = 0; /* Program header table, internal form */
   Elf_Internal_Shdr **i_shdrp;	/* Section header table, internal form */
   struct elf_strtab_hash *shstrtab;
-  struct elf_backend_data *bed = get_elf_backend_data (abfd);
+  const struct elf_backend_data *bed = get_elf_backend_data (abfd);
 
   i_ehdrp = elf_elfheader (abfd);
   i_shdrp = elf_elfsections (abfd);
@@ -4314,11 +4314,8 @@ prep_headers (bfd *abfd)
 	 Such need can generally be supplied by replacing the tests for
 	 e_machine with the conditions used to determine it.  */
     default:
-      if (get_elf_backend_data (abfd) != NULL)
-	i_ehdrp->e_machine = get_elf_backend_data (abfd)->elf_machine_code;
-      else
-	i_ehdrp->e_machine = EM_NONE;
-      }
+      i_ehdrp->e_machine = bed->elf_machine_code;
+    }
 
   i_ehdrp->e_version = bed->s->ev_current;
   i_ehdrp->e_ehsize = bed->s->sizeof_ehdr;
@@ -4396,7 +4393,7 @@ _bfd_elf_assign_file_positions_for_relocs (bfd *abfd)
 bfd_boolean
 _bfd_elf_write_object_contents (bfd *abfd)
 {
-  struct elf_backend_data *bed = get_elf_backend_data (abfd);
+  const struct elf_backend_data *bed = get_elf_backend_data (abfd);
   Elf_Internal_Ehdr *i_ehdrp;
   Elf_Internal_Shdr **i_shdrp;
   bfd_boolean failed;
@@ -4458,7 +4455,7 @@ _bfd_elf_write_corefile_contents (bfd *abfd)
 int
 _bfd_elf_section_from_bfd_section (bfd *abfd, struct sec *asect)
 {
-  struct elf_backend_data *bed;
+  const struct elf_backend_data *bed;
   int index;
 
   if (elf_section_data (asect) != NULL
@@ -4574,7 +4571,7 @@ copy_private_bfd_data (bfd *ibfd, bfd *obfd)
   bfd_vma maxpagesize;
   struct elf_segment_map *phdr_adjust_seg = NULL;
   unsigned int phdr_adjust_num = 0;
-  struct elf_backend_data *bed;
+  const struct elf_backend_data *bed;
 
   if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
       || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
@@ -5269,7 +5266,7 @@ swap_out_syms (bfd *abfd,
 	       struct bfd_strtab_hash **sttp,
 	       int relocatable_p)
 {
-  struct elf_backend_data *bed;
+  const struct elf_backend_data *bed;
   int symcount;
   asymbol **syms;
   struct bfd_strtab_hash *stt;
@@ -5601,7 +5598,7 @@ _bfd_elf_canonicalize_reloc (bfd *abfd,
 {
   arelent *tblptr;
   unsigned int i;
-  struct elf_backend_data *bed = get_elf_backend_data (abfd);
+  const struct elf_backend_data *bed = get_elf_backend_data (abfd);
 
   if (! bed->s->slurp_reloc_table (abfd, section, symbols, FALSE))
     return -1;
@@ -5618,7 +5615,7 @@ _bfd_elf_canonicalize_reloc (bfd *abfd,
 long
 _bfd_elf_get_symtab (bfd *abfd, asymbol **allocation)
 {
-  struct elf_backend_data *bed = get_elf_backend_data (abfd);
+  const struct elf_backend_data *bed = get_elf_backend_data (abfd);
   long symcount = bed->s->slurp_symbol_table (abfd, allocation, FALSE);
 
   if (symcount >= 0)
@@ -5630,7 +5627,7 @@ long
 _bfd_elf_canonicalize_dynamic_symtab (bfd *abfd,
 				      asymbol **allocation)
 {
-  struct elf_backend_data *bed = get_elf_backend_data (abfd);
+  const struct elf_backend_data *bed = get_elf_backend_data (abfd);
   long symcount = bed->s->slurp_symbol_table (abfd, allocation, TRUE);
 
   if (symcount >= 0)
@@ -6758,7 +6755,7 @@ elfcore_grok_win32pstatus (bfd *abfd, Elf_Internal_Note *note)
 static bfd_boolean
 elfcore_grok_note (bfd *abfd, Elf_Internal_Note *note)
 {
-  struct elf_backend_data *bed = get_elf_backend_data (abfd);
+  const struct elf_backend_data *bed = get_elf_backend_data (abfd);
 
   switch (note->type)
     {
@@ -7062,7 +7059,7 @@ elfcore_write_note (bfd  *abfd,
   pad = 0;
   if (name != NULL)
     {
-      struct elf_backend_data *bed;
+      const struct elf_backend_data *bed;
 
       namesz = strlen (name) + 1;
       bed = get_elf_backend_data (abfd);
diff --git a/bfd/elf32-hppa.c b/bfd/elf32-hppa.c
index 9338793..ae09096 100644
--- a/bfd/elf32-hppa.c
+++ b/bfd/elf32-hppa.c
@@ -990,7 +990,7 @@ elf32_hppa_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
 /* Copy the extra info we tack onto an elf_link_hash_entry.  */
 
 static void
-elf32_hppa_copy_indirect_symbol (struct elf_backend_data *bed,
+elf32_hppa_copy_indirect_symbol (const struct elf_backend_data *bed,
 				 struct elf_link_hash_entry *dir,
 				 struct elf_link_hash_entry *ind)
 {
diff --git a/bfd/elf32-i386.c b/bfd/elf32-i386.c
index 60bccb8..23020b4 100644
--- a/bfd/elf32-i386.c
+++ b/bfd/elf32-i386.c
@@ -711,7 +711,7 @@ elf_i386_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
 /* Copy the extra info we tack onto an elf_link_hash_entry.  */
 
 static void
-elf_i386_copy_indirect_symbol (struct elf_backend_data *bed,
+elf_i386_copy_indirect_symbol (const struct elf_backend_data *bed,
 			       struct elf_link_hash_entry *dir,
 			       struct elf_link_hash_entry *ind)
 {
diff --git a/bfd/elf32-m68hc1x.c b/bfd/elf32-m68hc1x.c
index 7733f05..b31fc7b 100644
--- a/bfd/elf32-m68hc1x.c
+++ b/bfd/elf32-m68hc1x.c
@@ -1119,7 +1119,7 @@ elf32_m68hc11_relocate_section (output_bfd, info, input_bfd, input_section,
   Elf_Internal_Rela *rel, *relend;
   const char *name;
   struct m68hc11_page_info *pinfo;
-  struct elf_backend_data * const ebd = get_elf_backend_data (input_bfd);
+  const struct elf_backend_data * const ebd = get_elf_backend_data (input_bfd);
 
   symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
   sym_hashes = elf_sym_hashes (input_bfd);
diff --git a/bfd/elf32-ppc.c b/bfd/elf32-ppc.c
index dff4126..b820638 100644
--- a/bfd/elf32-ppc.c
+++ b/bfd/elf32-ppc.c
@@ -285,7 +285,7 @@ ppc_elf_link_hash_table_create (bfd *abfd)
 /* Copy the extra info we tack onto an elf_link_hash_entry.  */
 
 static void
-ppc_elf_copy_indirect_symbol (struct elf_backend_data *bed,
+ppc_elf_copy_indirect_symbol (const struct elf_backend_data *bed,
 			      struct elf_link_hash_entry *dir,
 			      struct elf_link_hash_entry *ind)
 {
@@ -2581,11 +2581,12 @@ elf_finish_pointer_linker_section (bfd *output_bfd,
 	      asection *srel = lsect->rel_section;
 	      Elf_Internal_Rela outrel[MAX_INT_RELS_PER_EXT_REL];
 	      bfd_byte *erel;
-	      struct elf_backend_data *bed = get_elf_backend_data (output_bfd);
+	      const struct elf_backend_data *bed;
 	      unsigned int i;
 
 	      BFD_ASSERT (srel != NULL);
 
+	      bed = get_elf_backend_data (output_bfd);
 	      for (i = 0; i < bed->s->int_rels_per_ext_rel; i++)
 		{
 		  outrel[i].r_offset = (lsect->section->output_section->vma
diff --git a/bfd/elf32-s390.c b/bfd/elf32-s390.c
index 1ce327f..85e9ab6 100644
--- a/bfd/elf32-s390.c
+++ b/bfd/elf32-s390.c
@@ -40,7 +40,7 @@ static bfd_boolean create_got_section
 static bfd_boolean elf_s390_create_dynamic_sections
   PARAMS((bfd *, struct bfd_link_info *));
 static void elf_s390_copy_indirect_symbol
-  PARAMS ((struct elf_backend_data *, struct elf_link_hash_entry *,
+  PARAMS ((const struct elf_backend_data *, struct elf_link_hash_entry *,
 	   struct elf_link_hash_entry *));
 static bfd_boolean elf_s390_check_relocs
   PARAMS ((bfd *, struct bfd_link_info *, asection *,
@@ -856,7 +856,7 @@ elf_s390_create_dynamic_sections (dynobj, info)
 
 static void
 elf_s390_copy_indirect_symbol (bed, dir, ind)
-     struct elf_backend_data *bed;
+     const struct elf_backend_data *bed;
      struct elf_link_hash_entry *dir, *ind;
 {
   struct elf_s390_link_hash_entry *edir, *eind;
diff --git a/bfd/elf32-sh.c b/bfd/elf32-sh.c
index 5417865..ac410c2 100644
--- a/bfd/elf32-sh.c
+++ b/bfd/elf32-sh.c
@@ -57,7 +57,7 @@ static bfd_byte *sh_elf_get_relocated_section_contents
   (bfd *, struct bfd_link_info *, struct bfd_link_order *, bfd_byte *,
    bfd_boolean, asymbol **);
 static void sh_elf_copy_indirect_symbol
-  (struct elf_backend_data *, struct elf_link_hash_entry *,
+  (const struct elf_backend_data *, struct elf_link_hash_entry *,
    struct elf_link_hash_entry *);
 static int sh_elf_optimized_tls_reloc
   (struct bfd_link_info *, int, int);
@@ -3692,7 +3692,7 @@ sh_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
   struct elf_sh_link_hash_table *htab;
   flagword flags, pltflags;
   register asection *s;
-  struct elf_backend_data *bed = get_elf_backend_data (abfd);
+  const struct elf_backend_data *bed = get_elf_backend_data (abfd);
   int ptralign = 0;
 
   switch (bed->s->arch_size)
@@ -6011,7 +6011,7 @@ sh_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
 /* Copy the extra info we tack onto an elf_link_hash_entry.  */
 
 static void
-sh_elf_copy_indirect_symbol (struct elf_backend_data *bed,
+sh_elf_copy_indirect_symbol (const struct elf_backend_data *bed,
 			     struct elf_link_hash_entry *dir,
 			     struct elf_link_hash_entry *ind)
 {
diff --git a/bfd/elf32-sh64.c b/bfd/elf32-sh64.c
index 2678548..396fedf 100644
--- a/bfd/elf32-sh64.c
+++ b/bfd/elf32-sh64.c
@@ -410,7 +410,7 @@ sh64_elf_add_symbol_hook (bfd *abfd, struct bfd_link_info *info,
 	{
 	  /* No previous datalabel symbol.  Make one.  */
 	  struct bfd_link_hash_entry *bh = NULL;
-	  struct elf_backend_data *bed = get_elf_backend_data (abfd);
+	  const struct elf_backend_data *bed = get_elf_backend_data (abfd);
 
 	  if (! _bfd_generic_link_add_one_symbol (info, abfd, dl_name,
 						  flags, *secp, *valp,
diff --git a/bfd/elf32-sparc.c b/bfd/elf32-sparc.c
index c18edda..136d80e 100644
--- a/bfd/elf32-sparc.c
+++ b/bfd/elf32-sparc.c
@@ -68,7 +68,7 @@ static bfd_boolean create_got_section
 static bfd_boolean elf32_sparc_create_dynamic_sections
   PARAMS ((bfd *, struct bfd_link_info *));
 static void elf32_sparc_copy_indirect_symbol
-  PARAMS ((struct elf_backend_data *, struct elf_link_hash_entry *,
+  PARAMS ((const struct elf_backend_data *, struct elf_link_hash_entry *,
 	  struct elf_link_hash_entry *));
 static int elf32_sparc_tls_transition
   PARAMS ((struct bfd_link_info *, bfd *, int, int));
@@ -750,7 +750,7 @@ elf32_sparc_create_dynamic_sections (dynobj, info)
 
 static void
 elf32_sparc_copy_indirect_symbol (bed, dir, ind)
-     struct elf_backend_data *bed;
+     const struct elf_backend_data *bed;
      struct elf_link_hash_entry *dir, *ind;
 {
   struct elf32_sparc_link_hash_entry *edir, *eind;
diff --git a/bfd/elf32-xtensa.c b/bfd/elf32-xtensa.c
index 3322c9e..8b09305 100644
--- a/bfd/elf32-xtensa.c
+++ b/bfd/elf32-xtensa.c
@@ -48,7 +48,7 @@ static bfd_boolean elf_xtensa_check_relocs
 static void elf_xtensa_hide_symbol
   PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *, bfd_boolean));
 static void elf_xtensa_copy_indirect_symbol
-  PARAMS ((struct elf_backend_data *, struct elf_link_hash_entry *,
+  PARAMS ((const struct elf_backend_data *, struct elf_link_hash_entry *,
 	   struct elf_link_hash_entry *));
 static asection *elf_xtensa_gc_mark_hook
   PARAMS ((asection *, struct bfd_link_info *, Elf_Internal_Rela *,
@@ -799,7 +799,7 @@ elf_xtensa_hide_symbol (info, h, force_local)
 
 static void
 elf_xtensa_copy_indirect_symbol (bed, dir, ind)
-     struct elf_backend_data *bed;
+     const struct elf_backend_data *bed;
      struct elf_link_hash_entry *dir, *ind;
 {
   _bfd_elf_link_hash_copy_indirect (bed, dir, ind);
diff --git a/bfd/elf64-mips.c b/bfd/elf64-mips.c
index bec1aca..041c222 100644
--- a/bfd/elf64-mips.c
+++ b/bfd/elf64-mips.c
@@ -2100,7 +2100,7 @@ mips_elf64_canonicalize_reloc (abfd, section, relptr, symbols)
 {
   arelent *tblptr;
   unsigned int i;
-  struct elf_backend_data *bed = get_elf_backend_data (abfd);
+  const struct elf_backend_data *bed = get_elf_backend_data (abfd);
 
   if (! bed->s->slurp_reloc_table (abfd, section, symbols, FALSE))
     return -1;
diff --git a/bfd/elf64-ppc.c b/bfd/elf64-ppc.c
index d9f04a5..3916333 100644
--- a/bfd/elf64-ppc.c
+++ b/bfd/elf64-ppc.c
@@ -3277,9 +3277,10 @@ ppc64_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
 /* Copy the extra info we tack onto an elf_link_hash_entry.  */
 
 static void
-ppc64_elf_copy_indirect_symbol (struct elf_backend_data *bed ATTRIBUTE_UNUSED,
-				struct elf_link_hash_entry *dir,
-				struct elf_link_hash_entry *ind)
+ppc64_elf_copy_indirect_symbol
+  (const struct elf_backend_data *bed ATTRIBUTE_UNUSED,
+   struct elf_link_hash_entry *dir,
+   struct elf_link_hash_entry *ind)
 {
   struct ppc_link_hash_entry *edir, *eind;
   flagword mask;
diff --git a/bfd/elf64-s390.c b/bfd/elf64-s390.c
index 62ef221..23ca8aa 100644
--- a/bfd/elf64-s390.c
+++ b/bfd/elf64-s390.c
@@ -40,7 +40,7 @@ static bfd_boolean create_got_section
 static bfd_boolean elf_s390_create_dynamic_sections
   PARAMS((bfd *, struct bfd_link_info *));
 static void elf_s390_copy_indirect_symbol
-  PARAMS ((struct elf_backend_data *, struct elf_link_hash_entry *,
+  PARAMS ((const struct elf_backend_data *, struct elf_link_hash_entry *,
 	   struct elf_link_hash_entry *));
 static bfd_boolean elf_s390_check_relocs
   PARAMS ((bfd *, struct bfd_link_info *, asection *,
@@ -809,7 +809,7 @@ elf_s390_create_dynamic_sections (dynobj, info)
 
 static void
 elf_s390_copy_indirect_symbol (bed, dir, ind)
-     struct elf_backend_data *bed;
+     const struct elf_backend_data *bed;
      struct elf_link_hash_entry *dir, *ind;
 {
   struct elf_s390_link_hash_entry *edir, *eind;
diff --git a/bfd/elf64-sh64.c b/bfd/elf64-sh64.c
index 905cadd..2abf3c1 100644
--- a/bfd/elf64-sh64.c
+++ b/bfd/elf64-sh64.c
@@ -2917,7 +2917,7 @@ sh64_elf64_add_symbol_hook (bfd *abfd, struct bfd_link_info *info,
 	{
 	  /* No previous datalabel symbol.  Make one.  */
 	  struct bfd_link_hash_entry *bh = NULL;
-	  struct elf_backend_data *bed = get_elf_backend_data (abfd);
+	  const struct elf_backend_data *bed = get_elf_backend_data (abfd);
 
 	  if (! _bfd_generic_link_add_one_symbol (info, abfd, dl_name,
 						  flags, *secp, *valp,
@@ -3238,7 +3238,7 @@ sh64_elf64_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
 {
   flagword flags, pltflags;
   register asection *s;
-  struct elf_backend_data *bed = get_elf_backend_data (abfd);
+  const struct elf_backend_data *bed = get_elf_backend_data (abfd);
   int ptralign = 0;
 
   switch (bed->s->arch_size)
diff --git a/bfd/elf64-sparc.c b/bfd/elf64-sparc.c
index 13f6a55..25c609f 100644
--- a/bfd/elf64-sparc.c
+++ b/bfd/elf64-sparc.c
@@ -518,7 +518,7 @@ sparc64_elf_canonicalize_reloc (abfd, section, relptr, symbols)
 {
   arelent *tblptr;
   unsigned int i;
-  struct elf_backend_data *bed = get_elf_backend_data (abfd);
+  const struct elf_backend_data *bed = get_elf_backend_data (abfd);
 
   if (! bed->s->slurp_reloc_table (abfd, section, symbols, FALSE))
     return -1;
diff --git a/bfd/elf64-x86-64.c b/bfd/elf64-x86-64.c
index 09a072b..39d5abb 100644
--- a/bfd/elf64-x86-64.c
+++ b/bfd/elf64-x86-64.c
@@ -501,7 +501,7 @@ elf64_x86_64_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info)
 /* Copy the extra info we tack onto an elf_link_hash_entry.  */
 
 static void
-elf64_x86_64_copy_indirect_symbol (struct elf_backend_data *bed,
+elf64_x86_64_copy_indirect_symbol (const struct elf_backend_data *bed,
 				   struct elf_link_hash_entry *dir,
 				   struct elf_link_hash_entry *ind)
 {
diff --git a/bfd/elfcode.h b/bfd/elfcode.h
index 7eaac98..a627e48 100644
--- a/bfd/elfcode.h
+++ b/bfd/elfcode.h
@@ -492,7 +492,7 @@ elf_object_p (bfd *abfd)
   Elf_Internal_Shdr *i_shdrp;	/* Section header table, internal form */
   unsigned int shindex;
   char *shstrtab;		/* Internal copy of section header stringtab */
-  struct elf_backend_data *ebd;
+  const struct elf_backend_data *ebd;
   struct bfd_preserve preserve;
   asection *s;
   bfd_size_type amt;
@@ -591,11 +591,11 @@ elf_object_p (bfd *abfd)
 	 for which we do not have a specific backend.  */
       for (target_ptr = bfd_target_vector; *target_ptr != NULL; target_ptr++)
 	{
-	  struct elf_backend_data *back;
+	  const struct elf_backend_data *back;
 
 	  if ((*target_ptr)->flavour != bfd_target_elf_flavour)
 	    continue;
-	  back = (struct elf_backend_data *) (*target_ptr)->backend_data;
+	  back = (const struct elf_backend_data *) (*target_ptr)->backend_data;
 	  if (back->elf_machine_code == i_ehdrp->e_machine
 	      || (back->elf_machine_alt1 != 0
 		  && back->elf_machine_alt1 == i_ehdrp->e_machine)
@@ -1008,7 +1008,7 @@ elf_slurp_symbol_table (bfd *abfd, asymbol **symptrs, bfd_boolean dynamic)
   Elf_Internal_Sym *isymbuf = NULL;
   Elf_External_Versym *xver;
   Elf_External_Versym *xverbuf = NULL;
-  struct elf_backend_data *ebd;
+  const struct elf_backend_data *ebd;
   bfd_size_type amt;
 
   /* Read each raw ELF symbol, converting from external ELF form to
@@ -1238,7 +1238,7 @@ elf_slurp_reloc_table_from_section (bfd *abfd,
 				    asymbol **symbols,
 				    bfd_boolean dynamic)
 {
-  struct elf_backend_data * const ebd = get_elf_backend_data (abfd);
+  const struct elf_backend_data * const ebd = get_elf_backend_data (abfd);
   void *allocated = NULL;
   bfd_byte *native_relocs;
   arelent *relent;
diff --git a/bfd/elfcore.h b/bfd/elfcore.h
index 865edcd..81c4cff 100644
--- a/bfd/elfcore.h
+++ b/bfd/elfcore.h
@@ -76,7 +76,7 @@ elf_core_file_p (bfd *abfd)
   Elf_Internal_Ehdr *i_ehdrp;	/* Elf file header, internal form.  */
   Elf_Internal_Phdr *i_phdrp;	/* Elf program header, internal form.  */
   unsigned int phindex;
-  struct elf_backend_data *ebd;
+  const struct elf_backend_data *ebd;
   struct bfd_preserve preserve;
   bfd_size_type amt;
 
@@ -153,11 +153,11 @@ elf_core_file_p (bfd *abfd)
 
       for (target_ptr = bfd_target_vector; *target_ptr != NULL; target_ptr++)
 	{
-	  struct elf_backend_data *back;
+	  const struct elf_backend_data *back;
 
 	  if ((*target_ptr)->flavour != bfd_target_elf_flavour)
 	    continue;
-	  back = (struct elf_backend_data *) (*target_ptr)->backend_data;
+	  back = (const struct elf_backend_data *) (*target_ptr)->backend_data;
 	  if (back->elf_machine_code == i_ehdrp->e_machine
 	      || (back->elf_machine_alt1 != 0
 	          && i_ehdrp->e_machine == back->elf_machine_alt1)
diff --git a/bfd/elflink.c b/bfd/elflink.c
index 740f5d8..d53571d 100644
--- a/bfd/elflink.c
+++ b/bfd/elflink.c
@@ -32,7 +32,7 @@ _bfd_elf_create_got_section (bfd *abfd, struct bfd_link_info *info)
   asection *s;
   struct elf_link_hash_entry *h;
   struct bfd_link_hash_entry *bh;
-  struct elf_backend_data *bed = get_elf_backend_data (abfd);
+  const struct elf_backend_data *bed = get_elf_backend_data (abfd);
   int ptralign;
 
   /* This function may be called more than once.  */
@@ -115,7 +115,7 @@ _bfd_elf_link_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
   register asection *s;
   struct elf_link_hash_entry *h;
   struct bfd_link_hash_entry *bh;
-  struct elf_backend_data *bed;
+  const struct elf_backend_data *bed;
 
   if (! is_elf_hash_table (info))
     return FALSE;
@@ -248,7 +248,7 @@ _bfd_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
 {
   flagword flags, pltflags;
   asection *s;
-  struct elf_backend_data *bed = get_elf_backend_data (abfd);
+  const struct elf_backend_data *bed = get_elf_backend_data (abfd);
 
   /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and
      .rel[a].bss sections.  */
@@ -1164,7 +1164,7 @@ _bfd_elf_merge_symbol (bfd *abfd,
       /* Handle the case where we had a versioned symbol in a dynamic
 	 library and now find a definition in a normal object.  In this
 	 case, we make the versioned symbol point to the normal one.  */
-      struct elf_backend_data *bed = get_elf_backend_data (abfd);
+      const struct elf_backend_data *bed = get_elf_backend_data (abfd);
       flip->root.type = h->root.type;
       h->root.type = bfd_link_hash_indirect;
       h->root.u.i.link = (struct bfd_link_hash_entry *) flip;
@@ -1247,7 +1247,7 @@ _bfd_elf_add_default_symbol (bfd *abfd,
   char *shortname;
   struct elf_link_hash_entry *hi;
   struct bfd_link_hash_entry *bh;
-  struct elf_backend_data *bed;
+  const struct elf_backend_data *bed;
   bfd_boolean collect;
   bfd_boolean dynamic;
   char *p;
@@ -1621,7 +1621,7 @@ _bfd_elf_link_assign_sym_version (struct elf_link_hash_entry *h, void *data)
 {
   struct elf_assign_sym_version_info *sinfo;
   struct bfd_link_info *info;
-  struct elf_backend_data *bed;
+  const struct elf_backend_data *bed;
   struct elf_info_failed eif;
   char *p;
   bfd_size_type amt;
@@ -1879,7 +1879,7 @@ elf_link_read_relocs_from_section (bfd *abfd,
 				   void *external_relocs,
 				   Elf_Internal_Rela *internal_relocs)
 {
-  struct elf_backend_data *bed;
+  const struct elf_backend_data *bed;
   void (*swap_in) (bfd *, const bfd_byte *, Elf_Internal_Rela *);
   const bfd_byte *erela;
   const bfd_byte *erelaend;
@@ -1943,7 +1943,7 @@ _bfd_elf_link_read_relocs (bfd *abfd,
   Elf_Internal_Shdr *rel_hdr;
   void *alloc1 = NULL;
   Elf_Internal_Rela *alloc2 = NULL;
-  struct elf_backend_data *bed = get_elf_backend_data (abfd);
+  const struct elf_backend_data *bed = get_elf_backend_data (abfd);
 
   if (elf_section_data (o)->relocs != NULL)
     return elf_section_data (o)->relocs;
@@ -2076,7 +2076,7 @@ _bfd_elf_link_output_relocs (bfd *output_bfd,
   Elf_Internal_Shdr *output_rel_hdr;
   asection *output_section;
   unsigned int *rel_countp = NULL;
-  struct elf_backend_data *bed;
+  const struct elf_backend_data *bed;
   void (*swap_out) (bfd *, const Elf_Internal_Rela *, bfd_byte *);
 
   output_section = input_section->output_section;
@@ -2223,7 +2223,7 @@ _bfd_elf_fix_symbol_flags (struct elf_link_hash_entry *h,
 	  || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
       && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0)
     {
-      struct elf_backend_data *bed;
+      const struct elf_backend_data *bed;
       bfd_boolean force_local;
 
       bed = get_elf_backend_data (elf_hash_table (eif->info)->dynobj);
@@ -2238,7 +2238,7 @@ _bfd_elf_fix_symbol_flags (struct elf_link_hash_entry *h,
   if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
       && h->root.type == bfd_link_hash_undefweak)
     {
-      struct elf_backend_data *bed;
+      const struct elf_backend_data *bed;
       bed = get_elf_backend_data (elf_hash_table (eif->info)->dynobj);
       (*bed->elf_backend_hide_symbol) (eif->info, h, TRUE);
     }
@@ -2267,7 +2267,7 @@ _bfd_elf_fix_symbol_flags (struct elf_link_hash_entry *h,
 	h->weakdef = NULL;
       else
 	{
-	  struct elf_backend_data *bed;
+	  const struct elf_backend_data *bed;
 
 	  bed = get_elf_backend_data (elf_hash_table (eif->info)->dynobj);
 	  (*bed->elf_backend_copy_indirect_symbol) (bed, weakdef, h);
@@ -2286,7 +2286,7 @@ _bfd_elf_adjust_dynamic_symbol (struct elf_link_hash_entry *h, void *data)
 {
   struct elf_info_failed *eif = data;
   bfd *dynobj;
-  struct elf_backend_data *bed;
+  const struct elf_backend_data *bed;
 
   if (! is_elf_hash_table (eif->info))
     return FALSE;
diff --git a/bfd/elflink.h b/bfd/elflink.h
index c0b2468..5e9cb3c 100644
--- a/bfd/elflink.h
+++ b/bfd/elflink.h
@@ -415,7 +415,7 @@ elf_link_add_object_symbols (bfd *abfd, struct bfd_link_info *info)
   Elf_Internal_Sym *isymbuf = NULL;
   Elf_Internal_Sym *isym;
   Elf_Internal_Sym *isymend;
-  struct elf_backend_data *bed;
+  const struct elf_backend_data *bed;
   bfd_boolean dt_needed;
   struct elf_link_hash_table * hash_table;
   bfd_size_type amt;
@@ -1888,7 +1888,7 @@ NAME(bfd_elf,size_dynamic_sections) (bfd *output_bfd,
 {
   bfd_size_type soname_indx;
   bfd *dynobj;
-  struct elf_backend_data *bed;
+  const struct elf_backend_data *bed;
   struct elf_assign_sym_version_info asvinfo;
 
   *sinterpptr = NULL;
@@ -2859,7 +2859,7 @@ elf_link_adjust_relocs (bfd *abfd,
 			struct elf_link_hash_entry **rel_hash)
 {
   unsigned int i;
-  struct elf_backend_data *bed = get_elf_backend_data (abfd);
+  const struct elf_backend_data *bed = get_elf_backend_data (abfd);
   bfd_byte *erela;
   void (*swap_in) (bfd *, const bfd_byte *, Elf_Internal_Rela *);
   void (*swap_out) (bfd *, const Elf_Internal_Rela *, bfd_byte *);
@@ -2964,7 +2964,7 @@ elf_link_sort_relocs (bfd *abfd, struct bfd_link_info *info, asection **psec)
   size_t i, ret, sort_elt, ext_size;
   bfd_byte *sort, *s_non_relative, *p;
   struct elf_link_sort_rela *sq;
-  struct elf_backend_data *bed = get_elf_backend_data (abfd);
+  const struct elf_backend_data *bed = get_elf_backend_data (abfd);
   int i2e = bed->s->int_rels_per_ext_rel;
   void (*swap_in) (bfd *, const bfd_byte *, Elf_Internal_Rela *);
   void (*swap_out) (bfd *, const Elf_Internal_Rela *, bfd_byte *);
@@ -3096,7 +3096,7 @@ elf_bfd_final_link (bfd *abfd, struct bfd_link_info *info)
   Elf_Internal_Shdr *symtab_hdr;
   Elf_Internal_Shdr *symtab_shndx_hdr;
   Elf_Internal_Shdr *symstrtab_hdr;
-  struct elf_backend_data *bed = get_elf_backend_data (abfd);
+  const struct elf_backend_data *bed = get_elf_backend_data (abfd);
   struct elf_outext_info eoinfo;
   bfd_boolean merged;
   size_t relativecount = 0;
@@ -4541,7 +4541,7 @@ elf_link_output_extsym (struct elf_link_hash_entry *h, void *data)
 	  || (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
       && elf_hash_table (finfo->info)->dynamic_sections_created)
     {
-      struct elf_backend_data *bed;
+      const struct elf_backend_data *bed;
 
       bed = get_elf_backend_data (finfo->output_bfd);
       if (! ((*bed->elf_backend_finish_dynamic_symbol)
@@ -4687,7 +4687,7 @@ elf_link_input_bfd (struct elf_final_link_info *finfo, bfd *input_bfd)
   long *pindex;
   asection **ppsection;
   asection *o;
-  struct elf_backend_data *bed;
+  const struct elf_backend_data *bed;
   bfd_boolean emit_relocs;
   struct elf_link_hash_entry **sym_hashes;
 
@@ -5321,7 +5321,7 @@ elf_reloc_link_order (bfd *output_bfd,
   bfd_vma addend;
   struct elf_link_hash_entry **rel_hash_ptr;
   Elf_Internal_Shdr *rel_hdr;
-  struct elf_backend_data *bed = get_elf_backend_data (output_bfd);
+  const struct elf_backend_data *bed = get_elf_backend_data (output_bfd);
   Elf_Internal_Rela irel[MAX_INT_RELS_PER_EXT_REL];
   bfd_byte *erel;
   unsigned int i;
@@ -5509,7 +5509,7 @@ elf_gc_mark (struct bfd_link_info *info,
       size_t nlocsyms;
       size_t extsymoff;
       bfd *input_bfd = sec->owner;
-      struct elf_backend_data *bed = get_elf_backend_data (input_bfd);
+      const struct elf_backend_data *bed = get_elf_backend_data (input_bfd);
       Elf_Internal_Sym *isym = NULL;
 
       symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
@@ -5727,10 +5727,11 @@ elf_gc_propagate_vtable_entries_used (struct elf_link_hash_entry *h, void *okp)
       pu = h->vtable_parent->vtable_entries_used;
       if (pu != NULL)
 	{
-	  asection *sec = h->root.u.def.section;
-	  struct elf_backend_data *bed = get_elf_backend_data (sec->owner);
-	  unsigned int log_file_align = bed->s->log_file_align;
+	  const struct elf_backend_data *bed;
+	  unsigned int log_file_align;
 
+	  bed = get_elf_backend_data (h->root.u.def.section->owner);
+	  log_file_align = bed->s->log_file_align;
 	  n = h->vtable_parent->vtable_entries_size >> log_file_align;
 	  while (n--)
 	    {
@@ -5751,7 +5752,7 @@ elf_gc_smash_unused_vtentry_relocs (struct elf_link_hash_entry *h, void *okp)
   asection *sec;
   bfd_vma hstart, hend;
   Elf_Internal_Rela *relstart, *relend, *rel;
-  struct elf_backend_data *bed;
+  const struct elf_backend_data *bed;
   unsigned int log_file_align;
 
   if (h->root.type == bfd_link_hash_warning)
@@ -5914,7 +5915,7 @@ elf_gc_record_vtentry (bfd *abfd ATTRIBUTE_UNUSED,
 		       struct elf_link_hash_entry *h,
 		       bfd_vma addend)
 {
-  struct elf_backend_data *bed = get_elf_backend_data (abfd);
+  const struct elf_backend_data *bed = get_elf_backend_data (abfd);
   unsigned int log_file_align = bed->s->log_file_align;
 
   if (addend >= h->vtable_entries_size)
@@ -5980,7 +5981,7 @@ elf_gc_common_finalize_got_offsets (bfd *abfd,
 				    struct bfd_link_info *info)
 {
   bfd *i;
-  struct elf_backend_data *bed = get_elf_backend_data (abfd);
+  const struct elf_backend_data *bed = get_elf_backend_data (abfd);
   bfd_vma gotoff;
 
   /* The GOT offset is relative to the .got section, but the GOT header is
@@ -6183,7 +6184,7 @@ elf_bfd_discard_info (bfd *output_bfd, struct bfd_link_info *info)
   struct elf_reloc_cookie cookie;
   asection *stab, *eh;
   Elf_Internal_Shdr *symtab_hdr;
-  struct elf_backend_data *bed;
+  const struct elf_backend_data *bed;
   bfd *abfd;
   unsigned int count;
   bfd_boolean ret = FALSE;
@@ -6316,7 +6317,7 @@ elf_bfd_discard_info (bfd *output_bfd, struct bfd_link_info *info)
 static bfd_boolean
 elf_section_ignore_discarded_relocs (asection *sec)
 {
-  struct elf_backend_data *bed;
+  const struct elf_backend_data *bed;
 
   switch (sec->sec_info_type)
     {
diff --git a/bfd/elfxx-ia64.c b/bfd/elfxx-ia64.c
index 27ffddd..fe1490a 100644
--- a/bfd/elfxx-ia64.c
+++ b/bfd/elfxx-ia64.c
@@ -211,7 +211,7 @@ static struct bfd_hash_entry *elfNN_ia64_new_elf_hash_entry
   PARAMS ((struct bfd_hash_entry *entry, struct bfd_hash_table *table,
 	   const char *string));
 static void elfNN_ia64_hash_copy_indirect
-  PARAMS ((struct elf_backend_data *, struct elf_link_hash_entry *,
+  PARAMS ((const struct elf_backend_data *, struct elf_link_hash_entry *,
 	   struct elf_link_hash_entry *));
 static void elfNN_ia64_hash_hide_symbol
   PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *, bfd_boolean));
@@ -1589,7 +1589,7 @@ elfNN_ia64_new_elf_hash_entry (entry, table, string)
 
 static void
 elfNN_ia64_hash_copy_indirect (bed, xdir, xind)
-     struct elf_backend_data *bed ATTRIBUTE_UNUSED;
+     const struct elf_backend_data *bed ATTRIBUTE_UNUSED;
      struct elf_link_hash_entry *xdir, *xind;
 {
   struct elfNN_ia64_link_hash_entry *dir, *ind;
diff --git a/bfd/elfxx-mips.c b/bfd/elfxx-mips.c
index 4c54965..99e9fbc 100644
--- a/bfd/elfxx-mips.c
+++ b/bfd/elfxx-mips.c
@@ -4985,7 +4985,7 @@ _bfd_mips_elf_check_relocs (abfd, info, sec, relocs)
   const Elf_Internal_Rela *rel_end;
   asection *sgot;
   asection *sreloc;
-  struct elf_backend_data *bed;
+  const struct elf_backend_data *bed;
 
   if (info->relocatable)
     return TRUE;
@@ -6171,7 +6171,7 @@ _bfd_mips_elf_relocate_section (output_bfd, info, input_bfd, input_section,
   const Elf_Internal_Rela *relend;
   bfd_vma addend = 0;
   bfd_boolean use_saved_addend_p = FALSE;
-  struct elf_backend_data *bed;
+  const struct elf_backend_data *bed;
 
   bed = get_elf_backend_data (output_bfd);
   relend = relocs + input_section->reloc_count * bed->s->int_rels_per_ext_rel;
@@ -7626,7 +7626,7 @@ _bfd_mips_elf_gc_sweep_hook (abfd, info, sec, relocs)
 
 void
 _bfd_mips_elf_copy_indirect_symbol (bed, dir, ind)
-     struct elf_backend_data *bed;
+     const struct elf_backend_data *bed;
      struct elf_link_hash_entry *dir, *ind;
 {
   struct mips_elf_link_hash_entry *dirmips, *indmips;
diff --git a/bfd/elfxx-mips.h b/bfd/elfxx-mips.h
index f6459a5..71cdc07 100644
--- a/bfd/elfxx-mips.h
+++ b/bfd/elfxx-mips.h
@@ -70,7 +70,7 @@ extern bfd_boolean _bfd_mips_elf_gc_sweep_hook
   PARAMS ((bfd *, struct bfd_link_info *, asection *,
 	   const Elf_Internal_Rela *));
 extern void _bfd_mips_elf_copy_indirect_symbol
-  PARAMS ((struct elf_backend_data *, struct elf_link_hash_entry *,
+  PARAMS ((const struct elf_backend_data *, struct elf_link_hash_entry *,
 	   struct elf_link_hash_entry *));
 extern void _bfd_mips_elf_hide_symbol
   PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *, bfd_boolean));
diff --git a/bfd/elfxx-target.h b/bfd/elfxx-target.h
index 9329b2b..544f8f3 100644
--- a/bfd/elfxx-target.h
+++ b/bfd/elfxx-target.h
@@ -621,7 +621,7 @@ const bfd_target TARGET_BIG_SYM =
 #endif
 
   /* backend_data: */
-  (PTR) &elfNN_bed
+  &elfNN_bed
 };
 #endif
 
@@ -717,6 +717,6 @@ const bfd_target TARGET_LITTLE_SYM =
 #endif
 
   /* backend_data: */
-  (PTR) &elfNN_bed
+  &elfNN_bed
 };
 #endif
diff --git a/bfd/targets.c b/bfd/targets.c
index 0ce77a9..c3212a9 100644
--- a/bfd/targets.c
+++ b/bfd/targets.c
@@ -477,7 +477,7 @@ to find an alternative output format that is suitable.
 
 .  {* Data for use by back-end routines, which isn't
 .     generic enough to belong in this structure.  *}
-.  void *backend_data;
+.  const void *backend_data;
 .
 .} bfd_target;
 .