agent/src/share/classes/sun/jvm/hotspot/debugger/Address.java

@@ -207,6 +207,9 @@
       operation of the bits of the address and the mask (least
       significant bits of the Address and the mask are aligned) and
       returns the result as an Address. Returns null if the result was
       zero. */
   public Address    xorWithMask(long mask) throws UnsupportedOperationException;
+
+  // return address as long integer.
+  public long asLongValue();
 }