--- a/hotspot/src/cpu/zero/vm/javaFrameAnchor_zero.hpp	Thu May 06 02:09:18 2010 -0700
+++ b/hotspot/src/cpu/zero/vm/javaFrameAnchor_zero.hpp	Fri May 07 04:20:56 2010 -0700
@@ -81,3 +81,7 @@
   ZeroFrame* last_Java_fp() const {
     return _last_Java_fp;
   }
+
+  static ByteSize last_Java_fp_offset() {
+    return byte_offset_of(JavaFrameAnchor, _last_Java_fp);
+  }