--- old/src/share/vm/prims/whitebox.hpp	2012-03-21 11:03:03.000000000 +0100
+++ new/src/share/vm/prims/whitebox.hpp	2012-03-21 11:03:03.000000000 +0100
@@ -25,12 +25,28 @@
 #ifndef SHARE_VM_PRIMS_WHITEBOX_HPP
 #define SHARE_VM_PRIMS_WHITEBOX_HPP
 
+#include "prims/jni.h"
+
+#include "memory/allocation.hpp"
+#include "oops/oopsHierarchy.hpp"
+
+// Entry macro to transition from JNI to VM state.
+
+#define WB_ENTRY(result_type, header) JNI_ENTRY(result_type, header)
+#define WB_END JNI_END
+
 class WhiteBox : public AllStatic {
  private:
   static bool _used;
  public:
   static bool used()     { return _used; }
   static void set_used() { _used = true; }
+  static int offset_for_field(const char* field_name, oop object,
+    Symbol* signature_symbol);
+  static const char* lookup_jstring(const char* field_name, oop object);
+  static bool lookup_bool(const char* field_name, oop object);
 };
 
+
+
 #endif // SHARE_VM_PRIMS_WHITEBOX_HPP