--- a/hotspot/src/share/vm/memory/universe.cpp	Mon Jun 17 11:17:49 2013 +0100
+++ b/hotspot/src/share/vm/memory/universe.cpp	Wed Jun 19 11:02:10 2013 +0100
@@ -822,12 +822,14 @@
       // keep the Universe::narrow_oop_base() set in Universe::reserve_heap()
       Universe::set_narrow_oop_shift(LogMinObjAlignmentInBytes);
       if (verbose) {
-        tty->print(", Compressed Oops with base: "PTR_FORMAT, Universe::narrow_oop_base());
+        tty->print(", %s: "PTR_FORMAT,
+            narrow_oop_mode_to_string(HeapBasedNarrowOop),
+            Universe::narrow_oop_base());
       }
     } else {
       Universe::set_narrow_oop_base(0);
       if (verbose) {
-        tty->print(", zero based Compressed Oops");
+        tty->print(", %s", narrow_oop_mode_to_string(ZeroBasedNarrowOop));
       }
 #ifdef _WIN64
       if (!Universe::narrow_oop_use_implicit_null_checks()) {
@@ -842,7 +844,7 @@
       } else {
         Universe::set_narrow_oop_shift(0);
         if (verbose) {
-          tty->print(", 32-bits Oops");
+          tty->print(", %s", narrow_oop_mode_to_string(UnscaledNarrowOop));
         }
       }
     }
@@ -949,6 +951,33 @@
 }
 
 
+const char* Universe::narrow_oop_mode_to_string(Universe::NARROW_OOP_MODE mode) {
+  switch (mode) {
+    case UnscaledNarrowOop:
+      return "32-bits Oops";
+    case ZeroBasedNarrowOop:
+      return "zero based Compressed Oops";
+    case HeapBasedNarrowOop:
+      return "Compressed Oops with base";
+  }
+
+  ShouldNotReachHere();
+  return "";
+}
+
+
+Universe::NARROW_OOP_MODE Universe::narrow_oop_mode() {
+  if (narrow_oop_base() != 0) {
+    return HeapBasedNarrowOop;
+  }
+
+  if (narrow_oop_shift() != 0) {
+    return ZeroBasedNarrowOop;
+  }
+
+  return UnscaledNarrowOop;
+}
+
 
 void universe2_init() {
   EXCEPTION_MARK;