diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 73bb0752a89..4807a04bd93 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2008-10-31  Nathan Froyd  <froydnj@codesourcery.com>
+
+	* config/rs6000/rs6000.c (rs6000_file_start): Output gnu
+	attribute for struct return convention.
+
 2008-10-31  Nathan Froyd  <froydnj@codesourcery.com>
 
 	* config/rs6000/crtsavres.asm: Really, really delete.
diff --git a/gcc/config/rs6000/rs6000.c b/gcc/config/rs6000/rs6000.c
index a4eeb0e8dba..6376305ef6a 100644
--- a/gcc/config/rs6000/rs6000.c
+++ b/gcc/config/rs6000/rs6000.c
@@ -2642,6 +2642,9 @@ rs6000_file_start (void)
 	       (TARGET_ALTIVEC_ABI ? 2
 		: TARGET_SPE_ABI ? 3
 		: 1));
+      fprintf (file, "\t.gnu_attribute 12, %d\n",
+	       aix_struct_return ? 2 : 1);
+
     }
 #endif