--- old/src/share/vm/prims/whitebox.cpp	2013-06-04 17:03:29.363740788 +0200
+++ new/src/share/vm/prims/whitebox.cpp	2013-06-04 17:03:29.199740784 +0200
@@ -33,6 +33,7 @@
 #include "prims/whitebox.hpp"
 #include "prims/wbtestmethods/parserTests.hpp"
 
+#include "runtime/arguments.hpp"
 #include "runtime/interfaceSupport.hpp"
 #include "runtime/os.hpp"
 #include "utilities/debug.hpp"
@@ -94,6 +95,12 @@
   return closure.found();
 WB_END
 
+WB_ENTRY(void, WB_PrintCompressedOopsHeapInfo(JNIEnv* env, jobject o)) {
+  gclog_or_tty->print_cr("Max heap for compressed oops "SIZE_FORMAT" ClassMetaspaceSize "SIZE_FORMAT,
+    Arguments::max_heap_for_compressed_oops(), ClassMetaspaceSize);
+}
+WB_END
+
 WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) {
   CollectorPolicy * p = Universe::heap()->collector_policy();
   gclog_or_tty->print_cr("Minimum heap "SIZE_FORMAT" Initial heap "
@@ -406,6 +413,9 @@
       CC"(Ljava/lang/String;[Lsun/hotspot/parser/DiagnosticCommand;)[Ljava/lang/Object;",
       (void*) &WB_ParseCommandLine
   },
+  {CC"printCompressedOopsHeapInfo",
+      CC"()V",
+      (void*)&WB_PrintCompressedOopsHeapInfo},
   {CC"printHeapSizes",     CC"()V",                   (void*)&WB_PrintHeapSizes    },
 #if INCLUDE_ALL_GCS
   {CC"g1InConcurrentMark", CC"()Z",                   (void*)&WB_G1InConcurrentMark},