* elf32-arm.c (bfd_arm_get_mach_from_attributes): New function.

	(elf32_arm_object_p): If the machine number could not be deduced
	from the notes, call bfd_arm_get_mach_from_attributes to get the
	number from the attributes.

2 files changed, 52 insertions, 8 deletions

diff --git a/bfd/ChangeLog b/bfd/ChangeLog
index 7386412..41e6264 100644
--- a/bfd/ChangeLog
+++ b/bfd/ChangeLog
@@ -1,3 +1,10 @@
+2012-06-13  Nick Clifton  <nickc@redhat.com>
+
+	* elf32-arm.c (bfd_arm_get_mach_from_attributes): New function.
+	(elf32_arm_object_p): If the machine number could not be deduced
+	from the notes, call bfd_arm_get_mach_from_attributes to get the
+	number from the attributes.
+
 2012-06-12  H.J. Lu  <hongjiu.lu@intel.com>
 
 	PR bfd/14207
diff --git a/bfd/elf32-arm.c b/bfd/elf32-arm.c
index 10d5dcc..e9157b2 100644
--- a/bfd/elf32-arm.c
+++ b/bfd/elf32-arm.c
@@ -10956,6 +10956,43 @@ elf32_arm_final_link (bfd *abfd, struct bfd_link_info *info)
   return TRUE;
 }
 
+/* Return a best guess for the machine number based on the attributes.  */
+
+static unsigned int
+bfd_arm_get_mach_from_attributes (bfd * abfd)
+{
+  int arch = bfd_elf_get_obj_attr_int (abfd, OBJ_ATTR_PROC, Tag_CPU_arch);
+
+  switch (arch)
+    {
+    case TAG_CPU_ARCH_V4: return bfd_mach_arm_4;
+    case TAG_CPU_ARCH_V4T: return bfd_mach_arm_4T;
+    case TAG_CPU_ARCH_V5T: return bfd_mach_arm_5T;
+
+    case TAG_CPU_ARCH_V5TE:
+      {
+	char * name;
+
+	BFD_ASSERT (Tag_CPU_name < NUM_KNOWN_OBJ_ATTRIBUTES);
+	name = elf_known_obj_attributes (abfd) [OBJ_ATTR_PROC][Tag_CPU_name].s;
+
+	if (name)
+	  {
+	    if (strcmp (name, "IWMMXT2") == 0)
+	      return bfd_mach_arm_iWMMXt2;
+
+	    if (strcmp (name, "IWMMXT") == 0)
+	      return bfd_mach_arm_iWMMXt;	
+	  }
+
+	return bfd_mach_arm_5TE;
+      }
+
+    default:
+      return bfd_mach_arm_unknown;
+    }
+}
+
 /* Set the right machine number.  */
 
 static bfd_boolean
@@ -10965,15 +11002,15 @@ elf32_arm_object_p (bfd *abfd)
 
   mach = bfd_arm_get_mach_from_notes (abfd, ARM_NOTE_SECTION);
 
-  if (mach != bfd_mach_arm_unknown)
-    bfd_default_set_arch_mach (abfd, bfd_arch_arm, mach);
-
-  else if (elf_elfheader (abfd)->e_flags & EF_ARM_MAVERICK_FLOAT)
-    bfd_default_set_arch_mach (abfd, bfd_arch_arm, bfd_mach_arm_ep9312);
-
-  else
-    bfd_default_set_arch_mach (abfd, bfd_arch_arm, mach);
+  if (mach == bfd_mach_arm_unknown)
+    {
+      if (elf_elfheader (abfd)->e_flags & EF_ARM_MAVERICK_FLOAT)
+	mach = bfd_mach_arm_ep9312;
+      else
+	mach = bfd_arm_get_mach_from_attributes (abfd);
+    }
 
+  bfd_default_set_arch_mach (abfd, bfd_arch_arm, mach);
   return TRUE;
 }