add LOCAL SECDIFF relocation for m32 mach-o

bfd:

	* reloc.c (BFD_RELOC_MACH_O_LOCAL_SECTDIFF):
	* libbfd.h: Regenerated.
	* bfd-in2.h: Likewise.
	* mach-o-i386.c (i386_howto_table): Include local sectdiff.
	(bfd_mach_o_i386_swap_reloc_in): Update for local sectdiff.
	(bfd_mach_o_i386_swap_reloc_out): Likewise.

5 files changed, 39 insertions, 2 deletions

diff --git a/bfd/ChangeLog b/bfd/ChangeLog
index ceed759..b5b8a4b 100644
--- a/bfd/ChangeLog
+++ b/bfd/ChangeLog
@@ -1,3 +1,12 @@
+2012-02-17  Tristan Gingold  <gingold@adacore.com>
+
+	* reloc.c (BFD_RELOC_MACH_O_LOCAL_SECTDIFF):
+	* libbfd.h: Regenerated.
+	* bfd-in2.h: Likewise.
+	* mach-o-i386.c (i386_howto_table): Include local sectdiff.
+	(bfd_mach_o_i386_swap_reloc_in): Update for local sectdiff.
+	(bfd_mach_o_i386_swap_reloc_out): Likewise.
+
 2012-02-17  Andreas Krebbel  <Andreas.Krebbel@de.ibm.com>
 
 	* elf32-s390.c (elf_s390_relocate_section): Support basr in the
diff --git a/bfd/bfd-in2.h b/bfd/bfd-in2.h
index 5072e43..fb56337 100644
--- a/bfd/bfd-in2.h
+++ b/bfd/bfd-in2.h
@@ -2161,6 +2161,7 @@ enum bfd_architecture
 #define bfd_mach_tilegx    1
   bfd_arch_last
   };
+
 typedef struct bfd_arch_info
 {
   int bits_per_word;
@@ -4824,6 +4825,9 @@ BFD_RELOC_XTENSA_ASM_EXPAND.  */
 BFD_RELOC_MACH_O_PAIR.  */
   BFD_RELOC_MACH_O_SECTDIFF,
 
+/* Like BFD_RELOC_MACH_O_SECTDIFF but with a local symbol.  */
+  BFD_RELOC_MACH_O_LOCAL_SECTDIFF,
+
 /* Pair of relocation.  Contains the first symbol.  */
   BFD_RELOC_MACH_O_PAIR,
 
diff --git a/bfd/libbfd.h b/bfd/libbfd.h
index 19c96cb..62f128f 100644
--- a/bfd/libbfd.h
+++ b/bfd/libbfd.h
@@ -2337,6 +2337,7 @@ static const char *const bfd_reloc_code_real_names[] = { "@@uninitialized@@",
   "BFD_RELOC_LM32_JMP_SLOT",
   "BFD_RELOC_LM32_RELATIVE",
   "BFD_RELOC_MACH_O_SECTDIFF",
+  "BFD_RELOC_MACH_O_LOCAL_SECTDIFF",
   "BFD_RELOC_MACH_O_PAIR",
   "BFD_RELOC_MACH_O_X86_64_BRANCH32",
   "BFD_RELOC_MACH_O_X86_64_BRANCH8",
diff --git a/bfd/mach-o-i386.c b/bfd/mach-o-i386.c
index 71272eb..b681352 100644
--- a/bfd/mach-o-i386.c
+++ b/bfd/mach-o-i386.c
@@ -63,6 +63,7 @@ bfd_mach_o_i386_mkobject (bfd *abfd)
 
 static reloc_howto_type i386_howto_table[]=
 {
+  /* 0 */
   HOWTO(BFD_RELOC_32, 0, 2, 32, FALSE, 0,
 	complain_overflow_bitfield,
 	NULL, "32",
@@ -79,6 +80,7 @@ static reloc_howto_type i386_howto_table[]=
 	complain_overflow_bitfield,
 	NULL, "DISP32",
 	FALSE, 0xffffffff, 0xffffffff, TRUE),
+  /* 4 */
   HOWTO(BFD_RELOC_16_PCREL, 0, 1, 16, TRUE, 0,
 	complain_overflow_bitfield,
 	NULL, "DISP16",
@@ -87,6 +89,10 @@ static reloc_howto_type i386_howto_table[]=
 	complain_overflow_bitfield,
 	NULL, "SECTDIFF_32",
 	FALSE, 0xffffffff, 0xffffffff, FALSE),
+  HOWTO(BFD_RELOC_MACH_O_LOCAL_SECTDIFF, 0, 2, 32, FALSE, 0,
+	complain_overflow_bitfield,
+	NULL, "LSECTDIFF_32",
+	FALSE, 0xffffffff, 0xffffffff, FALSE),
   HOWTO(BFD_RELOC_MACH_O_PAIR, 0, 2, 32, FALSE, 0,
 	complain_overflow_bitfield,
 	NULL, "PAIR_32",
@@ -103,15 +109,19 @@ bfd_mach_o_i386_swap_reloc_in (arelent *res, bfd_mach_o_reloc_info *reloc)
         case BFD_MACH_O_GENERIC_RELOC_PAIR:
           if (reloc->r_length != 2)
             return FALSE;
-          res->howto = &i386_howto_table[6];
+          res->howto = &i386_howto_table[7];
           res->address = res[-1].address;
           return TRUE;
         case BFD_MACH_O_GENERIC_RELOC_SECTDIFF:
-        case BFD_MACH_O_GENERIC_RELOC_LOCAL_SECTDIFF:
           if (reloc->r_length != 2)
             return FALSE;
           res->howto = &i386_howto_table[5];
           return TRUE;
+        case BFD_MACH_O_GENERIC_RELOC_LOCAL_SECTDIFF:
+          if (reloc->r_length != 2)
+            return FALSE;
+          res->howto = &i386_howto_table[6];
+          return TRUE;
         default:
           return FALSE;
         }
@@ -183,6 +193,15 @@ bfd_mach_o_i386_swap_reloc_out (arelent *rel, bfd_mach_o_reloc_info *rinfo)
       rinfo->r_value = (*rel->sym_ptr_ptr)->value 
         + (*rel->sym_ptr_ptr)->section->vma;
       break;
+    case BFD_RELOC_MACH_O_LOCAL_SECTDIFF:
+      rinfo->r_scattered = 1;
+      rinfo->r_type = BFD_MACH_O_GENERIC_RELOC_LOCAL_SECTDIFF;
+      rinfo->r_pcrel = 0;
+      rinfo->r_length = 2;
+      rinfo->r_extern = 0;
+      rinfo->r_value = (*rel->sym_ptr_ptr)->value
+        + (*rel->sym_ptr_ptr)->section->vma;
+      break;
     case BFD_RELOC_MACH_O_PAIR:
       rinfo->r_address = 0;
       rinfo->r_scattered = 1;
diff --git a/bfd/reloc.c b/bfd/reloc.c
index 5cde4a8..778276f 100644
--- a/bfd/reloc.c
+++ b/bfd/reloc.c
@@ -5594,6 +5594,10 @@ ENUMDOC
   Difference between two section addreses.  Must be followed by a
   BFD_RELOC_MACH_O_PAIR.
 ENUM
+  BFD_RELOC_MACH_O_LOCAL_SECTDIFF
+ENUMDOC
+  Like BFD_RELOC_MACH_O_SECTDIFF but with a local symbol.
+ENUM
   BFD_RELOC_MACH_O_PAIR
 ENUMDOC
   Pair of relocation.  Contains the first symbol.