--- /dev/null	2017-01-22 10:16:57.869617664 -0800
+++ new/src/jdk.internal.vm.ci/share/classes/jdk.vm.ci.hotspot/src/jdk/vm/ci/hotspot/HotSpotStackFrameReference.java	2017-02-15 16:55:58.802732338 -0800
@@ -0,0 +1,92 @@
+/*
+ * Copyright (c) 2014, 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.
+ */
+package jdk.vm.ci.hotspot;
+
+import java.util.Arrays;
+
+import jdk.vm.ci.code.stack.InspectedFrame;
+import jdk.vm.ci.meta.ResolvedJavaMethod;
+
+public class HotSpotStackFrameReference implements InspectedFrame {
+
+    private CompilerToVM compilerToVM;
+
+    // information used to find the stack frame
+    private long stackPointer;
+    private int frameNumber;
+
+    // information about the stack frame's contents
+    private int bci;
+    private HotSpotResolvedJavaMethod method;
+    private Object[] locals;
+    private boolean[] localIsVirtual;
+
+    public long getStackPointer() {
+        return stackPointer;
+    }
+
+    public int getFrameNumber() {
+        return frameNumber;
+    }
+
+    @Override
+    public Object getLocal(int index) {
+        return locals[index];
+    }
+
+    @Override
+    public boolean isVirtual(int index) {
+        return localIsVirtual == null ? false : localIsVirtual[index];
+    }
+
+    @Override
+    public void materializeVirtualObjects(boolean invalidateCode) {
+        compilerToVM.materializeVirtualObjects(this, invalidateCode);
+    }
+
+    @Override
+    public int getBytecodeIndex() {
+        return bci;
+    }
+
+    @Override
+    public ResolvedJavaMethod getMethod() {
+        return method;
+    }
+
+    @Override
+    public boolean isMethod(ResolvedJavaMethod otherMethod) {
+        return method.equals(otherMethod);
+    }
+
+    @Override
+    public boolean hasVirtualObjects() {
+        return localIsVirtual != null;
+    }
+
+    @Override
+    public String toString() {
+        return "HotSpotStackFrameReference [stackPointer=" + stackPointer + ", frameNumber=" + frameNumber + ", bci=" + bci + ", method=" + getMethod() + ", locals=" + Arrays.toString(locals) +
+                        ", localIsVirtual=" + Arrays.toString(localIsVirtual) + "]";
+    }
+}