--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/cpu/x86/vm/graalStubAssembler_x86.cpp	Mon Dec 03 15:32:17 2012 +0100
@@ -0,0 +1,54 @@
+/*
+ * Copyright (c) 1999, 2012, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+#include "precompiled.hpp"
+#include "graal/graalRuntime.hpp"
+#include "classfile/systemDictionary.hpp"
+#include "gc_interface/collectedHeap.hpp"
+#include "interpreter/interpreter.hpp"
+#include "oops/arrayOop.hpp"
+#include "oops/markOop.hpp"
+#include "runtime/basicLock.hpp"
+#include "runtime/biasedLocking.hpp"
+#include "runtime/os.hpp"
+#include "runtime/stubRoutines.hpp"
+
+#ifndef PRODUCT
+
+void GraalStubAssembler::verify_stack_oop(int stack_offset) {
+  if (!VerifyOops) return;
+  verify_oop_addr(Address(rsp, stack_offset));
+}
+
+void GraalStubAssembler::verify_not_null_oop(Register r) {
+  if (!VerifyOops) return;
+  Label not_null;
+  testptr(r, r);
+  jcc(Assembler::notZero, not_null);
+  stop("non-null oop required");
+  bind(not_null);
+  verify_oop(r);
+}
+
+#endif // ifndef PRODUCT