6 files changed, 60 insertions, 5 deletions
diff --git a/gas/ChangeLog b/gas/ChangeLog
index b7a9a87..2a996c2 100644
--- a/gas/ChangeLog
+++ b/gas/ChangeLog
@@ -1,3 +1,10 @@
+2011-12-15  Iain Sandoe  <iains@gcc.gnu.org>
+
+	* config/obj-macho.c (obj_mach_o_subsections_by_symbols): New global.
+	(obj_mach_o_file_properties): New enum.
+	(obj_mach_o_subsections_via_symbols):  Generalize name to...
+	... (obj_mach_o_fileprop) and use to set subsections_via_symbols.
+
 2011-12-14  Stuart Henderson  <shenders@gcc.gnu.org>
 
 	* config/bfin-parse.y (asm_1): set SRCx fields to all 1s for
diff --git a/gas/config/obj-macho.c b/gas/config/obj-macho.c
index 018f653..7f147e3 100644
--- a/gas/config/obj-macho.c
+++ b/gas/config/obj-macho.c
@@ -53,6 +53,10 @@ static int obj_mach_o_is_static;
 
 static int seen_objc_section;
 
+/* Remember the subsections_by_symbols state in case we need to reset
+   the file flags.  */
+static int obj_mach_o_subsections_by_symbols;
+
 static void
 obj_mach_o_weak (int ignore ATTRIBUTE_UNUSED)
 {
@@ -674,11 +678,33 @@ obj_mach_o_comm (int is_local)
   s_comm_internal (is_local, obj_mach_o_common_parse);
 }
 
-static void
-obj_mach_o_subsections_via_symbols (int arg ATTRIBUTE_UNUSED)
+/* Set properties that apply to the whole file.  At present, the only
+   one defined, is subsections_via_symbols.  */
+
+typedef enum obj_mach_o_file_properties {
+  OBJ_MACH_O_FILE_PROP_NONE = 0,
+  OBJ_MACH_O_FILE_PROP_SUBSECTS_VIA_SYMS,
+  OBJ_MACH_O_FILE_PROP_MAX
+} obj_mach_o_file_properties;
+
+static void 
+obj_mach_o_fileprop (int prop)
 {
-  /* Currently ignore it.  */
-  demand_empty_rest_of_line ();
+  if (prop < 0 || prop >= OBJ_MACH_O_FILE_PROP_MAX)
+    as_fatal (_("internal error: bad file property ID %d"), prop);
+    
+  switch ((obj_mach_o_file_properties) prop)
+    {
+      case OBJ_MACH_O_FILE_PROP_SUBSECTS_VIA_SYMS:
+        subsections_by_symbols = 1;
+	if (!bfd_set_private_flags (stdoutput, 
+				    BFD_MACH_O_MH_SUBSECTIONS_VIA_SYMBOLS))
+	  as_bad (_("failed to set subsections by symbols"));
+	demand_empty_rest_of_line ();
+	break;
+      default:
+	break;
+    }
 }
 
 /* Dummy function to allow test-code to work while we are working
@@ -776,7 +802,8 @@ const pseudo_typeS mach_o_pseudo_table[] =
   { "weak", obj_mach_o_weak, 0},   /* extension */
 
   /* File flags.  */
-  { "subsections_via_symbols", obj_mach_o_subsections_via_symbols, 0 },
+  { "subsections_via_symbols", obj_mach_o_fileprop, 
+			       OBJ_MACH_O_FILE_PROP_SUBSECTS_VIA_SYMS},
 
   {NULL, NULL, 0}
 };
diff --git a/gas/testsuite/ChangeLog b/gas/testsuite/ChangeLog
index 5fa4335..c9efc90 100644
--- a/gas/testsuite/ChangeLog
+++ b/gas/testsuite/ChangeLog
@@ -1,3 +1,9 @@
+2011-12-15  Iain Sandoe  <iains@gcc.gnu.org>
+
+	* gas/mach-o/subsect-via-symbols-0.d: New.
+	* gas/mach-o/subsect-via-symbols-1.d: New.
+	* gas/mach-o/subsect-via-symbols.s: New.
+
 2011-12-15  Nick Clifton  <nickc@redhat.com>
 
 	* gas/frv/immediates.s: New test file - checks assembly of
diff --git a/gas/testsuite/gas/mach-o/subsect-via-symbols-0.d b/gas/testsuite/gas/mach-o/subsect-via-symbols-0.d
new file mode 100644
index 0000000..4dd2739
--- /dev/null
+++ b/gas/testsuite/gas/mach-o/subsect-via-symbols-0.d
@@ -0,0 +1,6 @@
+#objdump: -P header
+#source: empty.s
+.*: +file format mach-o.*
+#...
+.*flags +: 00000000 \(-\)
+#pass
diff --git a/gas/testsuite/gas/mach-o/subsect-via-symbols-1.d b/gas/testsuite/gas/mach-o/subsect-via-symbols-1.d
new file mode 100644
index 0000000..163a9c2
--- /dev/null
+++ b/gas/testsuite/gas/mach-o/subsect-via-symbols-1.d
@@ -0,0 +1,6 @@
+#objdump: -P header
+#source: subsect-via-symbols.s
+.*: +file format mach-o.*
+#...
+.*flags +: 00002000 \(subsections_via_symbols\)
+#pass
diff --git a/gas/testsuite/gas/mach-o/subsect-via-symbols.s b/gas/testsuite/gas/mach-o/subsect-via-symbols.s
new file mode 100644
index 0000000..b244150
--- /dev/null
+++ b/gas/testsuite/gas/mach-o/subsect-via-symbols.s
@@ -0,0 +1,3 @@
+# just set subsections by symbols
+	.subsections_via_symbols
+