1 files changed, 33 insertions, 17 deletions

diff --git a/bfd/elf64-x86-64.c b/bfd/elf64-x86-64.c
index 975b558473..7b92097120 100644
--- a/bfd/elf64-x86-64.c
+++ b/bfd/elf64-x86-64.c
@@ -30,6 +30,7 @@
 #include "objalloc.h"
 #include "hashtab.h"
 #include "dwarf2.h"
+#include "libiberty.h"
 
 #include "elf/x86-64.h"
 
@@ -178,7 +179,12 @@ static reloc_howto_type x86_64_elf_howto_table[] =
 /* GNU extension to record C++ vtable member usage.  */
   HOWTO (R_X86_64_GNU_VTENTRY, 0, 4, 0, FALSE, 0, complain_overflow_dont,
 	 _bfd_elf_rel_vtable_reloc_fn, "R_X86_64_GNU_VTENTRY", FALSE, 0, 0,
-	 FALSE)
+	 FALSE),
+
+/* Use complain_overflow_bitfield on R_X86_64_32 for x32.  */
+  HOWTO(R_X86_64_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,
+	bfd_elf_generic_reloc, "R_X86_64_32", FALSE, 0xffffffff, 0xffffffff,
+	FALSE)
 };
 
 #define IS_X86_64_PCREL_TYPE(TYPE)	\
@@ -241,8 +247,15 @@ elf_x86_64_rtype_to_howto (bfd *abfd, unsigned r_type)
 {
   unsigned i;
 
-  if (r_type < (unsigned int) R_X86_64_GNU_VTINHERIT
-      || r_type >= (unsigned int) R_X86_64_max)
+  if (r_type == (unsigned int) R_X86_64_32)
+    {
+      if (ABI_64_P (abfd))
+	i = r_type;
+      else
+	i = ARRAY_SIZE (x86_64_elf_howto_table) - 1;
+    }
+  else if (r_type < (unsigned int) R_X86_64_GNU_VTINHERIT
+	   || r_type >= (unsigned int) R_X86_64_max)
     {
       if (r_type >= (unsigned int) R_X86_64_standard)
 	{
@@ -276,15 +289,21 @@ elf_x86_64_reloc_type_lookup (bfd *abfd,
 }
 
 static reloc_howto_type *
-elf_x86_64_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
+elf_x86_64_reloc_name_lookup (bfd *abfd,
 			      const char *r_name)
 {
   unsigned int i;
 
-  for (i = 0;
-       i < (sizeof (x86_64_elf_howto_table)
-	    / sizeof (x86_64_elf_howto_table[0]));
-       i++)
+  if (!ABI_64_P (abfd) && strcasecmp (r_name, "R_X86_64_32") == 0)
+    {
+      /* Get x32 R_X86_64_32.  */
+      reloc_howto_type *reloc
+	= &x86_64_elf_howto_table[ARRAY_SIZE (x86_64_elf_howto_table) - 1];
+      BFD_ASSERT (reloc->type == (unsigned int) R_X86_64_32);
+      return reloc;
+    }
+
+  for (i = 0; i < ARRAY_SIZE (x86_64_elf_howto_table); i++)
     if (x86_64_elf_howto_table[i].name != NULL
 	&& strcasecmp (x86_64_elf_howto_table[i].name, r_name) == 0)
       return &x86_64_elf_howto_table[i];
@@ -1396,14 +1415,6 @@ elf_x86_64_check_relocs (bfd *abfd, struct bfd_link_info *info,
 	  default:
 	    break;
 
-	  case R_X86_64_64:
-	    /* Allow R_X86_64_64 relocations in SEC_DEBUGGING sections
-	       when building shared libraries.  */
-	    if (info->shared
-		&& !info->executable
-		&& (sec->flags & SEC_DEBUGGING) != 0)
-	      break;
-
 	  case R_X86_64_DTPOFF64:
 	  case R_X86_64_TPOFF64:
 	  case R_X86_64_PC64:
@@ -3022,7 +3033,12 @@ elf_x86_64_relocate_section (bfd *output_bfd,
 	  return FALSE;
 	}
 
-      howto = x86_64_elf_howto_table + r_type;
+      if (r_type != (int) R_X86_64_32
+	  || ABI_64_P (output_bfd)) 
+	howto = x86_64_elf_howto_table + r_type;
+      else
+	howto = (x86_64_elf_howto_table
+		 + ARRAY_SIZE (x86_64_elf_howto_table) - 1);
       r_symndx = htab->r_sym (rel->r_info);
       h = NULL;
       sym = NULL;