Add ELFv2 .localentry support.

This defines the ELF symbol st_other field used to encode the number
of instructions between a function "global entry" and its "local entry",
and adds support related to the local entry offset.

include/elf/
	* ppc64.h (STO_PPC64_LOCAL_BIT, STO_PPC64_LOCAL_MASK): Define.
	(ppc64_decode_local_entry, ppc64_encode_local_entry): New functions.
	(PPC64_LOCAL_ENTRY_OFFSET, PPC64_SET_LOCAL_ENTRY_OFFSET): Define.
bfd/
	* elf64-ppc.c (struct ppc_stub_hash_entry): Add "other".
	(stub_hash_newfunc): Init new ppc_stub_hash_entry field, and one
	we forgot, "plt_ent".
	(ppc64_elf_add_symbol_hook): Check ELFv1 objects don't have
	st_other bits only valid in ELFv2.
	(ppc64_elf_merge_symbol_attribute): New function.
	(ppc_type_of_stub): Add local_off param to test branch range.
	(ppc_build_one_stub): Adjust destinations for ELFv2 locals.
	(ppc_size_one_stub, toc_adjusting_stub_needed): Similarly.
	(ppc64_elf_size_stubs): Pass local_off to ppc_type_of_stub.
	Set "other" field.
	(ppc64_elf_relocate_section): Adjust destination for ELFv2 local
	calls.
gas/
	* config/tc-ppc.c (md_pseudo_table): Add .localentry.
	(ppc_elf_localentry): New function.
	(ppc_force_relocation): Force relocs on all branches to localenty
	symbols.
	(ppc_fix_adjustable): Don't reduce such symbols to section+offset.
binutils/
	* readelf.c (get_ppc64_symbol_other): New function.
	(get_symbol_other): Use it for EM_PPC64.

2 files changed, 21 insertions, 0 deletions

diff --git a/binutils/ChangeLog b/binutils/ChangeLog
index 8457dc7..9774dea 100644
--- a/binutils/ChangeLog
+++ b/binutils/ChangeLog
@@ -1,3 +1,8 @@
+2013-10-30  Ulrich Weigand  <uweigand@de.ibm.com>
+
+	* readelf.c (get_ppc64_symbol_other): New function.
+	(get_symbol_other): Use it for EM_PPC64.
+
 2013-10-30  Alan Modra  <amodra@gmail.com>
 
 	* readelf.c (get_machine_flags): Display ABI version for EM_PPC64.
diff --git a/binutils/readelf.c b/binutils/readelf.c
index ab2943d..c99b46e 100644
--- a/binutils/readelf.c
+++ b/binutils/readelf.c
@@ -9211,6 +9211,19 @@ get_ia64_symbol_other (unsigned int other)
 }
 
 static const char *
+get_ppc64_symbol_other (unsigned int other)
+{
+  if (PPC64_LOCAL_ENTRY_OFFSET (other) != 0)
+    {
+      static char buf[32];
+      snprintf (buf, sizeof buf, _("<localentry>: %d"),
+		PPC64_LOCAL_ENTRY_OFFSET (other));
+      return buf;
+    }
+  return NULL;
+}
+
+static const char *
 get_symbol_other (unsigned int other)
 {
   const char * result = NULL;
@@ -9227,6 +9240,9 @@ get_symbol_other (unsigned int other)
     case EM_IA_64:
       result = get_ia64_symbol_other (other);
       break;
+    case EM_PPC64:
+      result = get_ppc64_symbol_other (other);
+      break;
     default:
       break;
     }