Bug 1309 non-extensible objects have immutable __Proto__

src/arm/constants-arm.h

Index: src/arm/constants-arm.h
diff --git a/src/arm/constants-arm.h b/src/arm/constants-arm.h
index 0ac567cb11f8ccb3252e1f9d4da8491e6d203d81..a1823a1e667a7443d84ee0294c57a45384e86cc4 100644
--- a/src/arm/constants-arm.h
+++ b/src/arm/constants-arm.h
@@ -1,4 +1,4 @@
-// Copyright 2010 the V8 project authors. All rights reserved.
+// Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
@@ -346,7 +346,9 @@ enum BlockAddrMode {
   da_x         = (0|0|0) << 21,  // Decrement after.
   ia_x         = (0|4|0) << 21,  // Increment after.
   db_x         = (8|0|0) << 21,  // Decrement before.
-  ib_x         = (8|4|0) << 21   // Increment before.
+  ib_x         = (8|4|0) << 21,  // Increment before.
+
+  kBlockAddrModeMask = (8|4|1) << 21
 };