[binutils-gdb] arc constify

[Alan Modra]

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=14aa7c52a3caac7de7931a7a537fe1706ce180d1

commit 14aa7c52a3caac7de7931a7a537fe1706ce180d1
Author: Alan Modra <amodra@gmail.com>
Date:   Tue Dec 15 22:08:20 2020 +1030

    arc constify
    
    Move a read-only array to .rodata.
    
            * arc-plt.h (plt_versions): Constify.
            * elf32-arc.c (arc_get_plt_version): Constify return pointer,
            adjust uses throughout.

Diff:
---
 bfd/ChangeLog   | 6 ++++++
 bfd/arc-plt.h   | 2 +-
 bfd/elf32-arc.c | 8 ++++----
 3 files changed, 11 insertions(+), 5 deletions(-)

diff --git a/bfd/ChangeLog b/bfd/ChangeLog
index 88a0ebba4fe..7eefc92598b 100644
--- a/bfd/ChangeLog
+++ b/bfd/ChangeLog
@@ -1,3 +1,9 @@
+2020-12-16  Alan Modra  <amodra@gmail.com>
+
+	* arc-plt.h (plt_versions): Constify.
+	* elf32-arc.c (arc_get_plt_version): Constify return pointer,
+	adjust uses throughout.
+
 2020-12-16  Alan Modra  <amodra@gmail.com>
 
 	* coffcode.h (pelength, peheader): Delete static variables.
diff --git a/bfd/arc-plt.h b/bfd/arc-plt.h
index f668fee8ca6..61bd9a6ddca 100644
--- a/bfd/arc-plt.h
+++ b/bfd/arc-plt.h
@@ -178,7 +178,7 @@ struct plt_version_t
 #define PLT_ELEM(...)
 #define ENTRY_RELOC(...)
 #define ELEM_RELOC(...)
-struct plt_version_t plt_versions[PLT_MAX] = {
+const struct plt_version_t plt_versions[PLT_MAX] = {
 
 #include "arc-plt.def"
 
diff --git a/bfd/elf32-arc.c b/bfd/elf32-arc.c
index a05f697b657..f184ac95c30 100644
--- a/bfd/elf32-arc.c
+++ b/bfd/elf32-arc.c
@@ -2112,7 +2112,7 @@ elf_arc_check_relocs (bfd *			 abfd,
 
 #define ELF_DYNAMIC_INTERPRETER  "/sbin/ld-uClibc.so"
 
-static struct plt_version_t *
+static const struct plt_version_t *
 arc_get_plt_version (struct bfd_link_info *info)
 {
   int i;
@@ -2146,7 +2146,7 @@ add_symbol_to_plt (struct bfd_link_info *info)
   struct elf_link_hash_table *htab = elf_hash_table (info);
   bfd_vma ret;
 
-  struct plt_version_t *plt_data = arc_get_plt_version (info);
+  const struct plt_version_t *plt_data = arc_get_plt_version (info);
 
   /* If this is the first .plt entry, make room for the special first
      entry.  */
@@ -2226,7 +2226,7 @@ relocate_plt_for_symbol (bfd *output_bfd,
 			 struct bfd_link_info *info,
 			 struct elf_link_hash_entry *h)
 {
-  struct plt_version_t *plt_data = arc_get_plt_version (info);
+  const struct plt_version_t *plt_data = arc_get_plt_version (info);
   struct elf_link_hash_table *htab = elf_hash_table (info);
 
   bfd_vma plt_index = (h->plt.offset  - plt_data->entry_size)
@@ -2292,7 +2292,7 @@ static void
 relocate_plt_for_entry (bfd *abfd,
 			struct bfd_link_info *info)
 {
-  struct plt_version_t *plt_data = arc_get_plt_version (info);
+  const struct plt_version_t *plt_data = arc_get_plt_version (info);
   struct elf_link_hash_table *htab = elf_hash_table (info);
 
   {