--- /dev/null	2016-05-31 09:42:47.975716356 -0700
+++ new/src/jdk.vm.compiler/share/classes/org.graalvm.compiler.hotspot/src/org/graalvm/compiler/hotspot/meta/HotSpotRegisters.java	2016-12-09 00:49:27.299224171 -0800
@@ -0,0 +1,56 @@
+/*
+ * Copyright (c) 2011, 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.
+ */
+package org.graalvm.compiler.hotspot.meta;
+
+import jdk.vm.ci.code.Register;
+
+public class HotSpotRegisters implements HotSpotRegistersProvider {
+
+    private final Register threadRegister;
+    private final Register heapBaseRegister;
+    private final Register stackPointerRegister;
+
+    public HotSpotRegisters(Register threadRegister, Register heapBaseRegister, Register stackPointerRegister) {
+        this.threadRegister = threadRegister;
+        this.heapBaseRegister = heapBaseRegister;
+        this.stackPointerRegister = stackPointerRegister;
+    }
+
+    @Override
+    public Register getThreadRegister() {
+        assert !threadRegister.equals(Register.None) : "thread register is not defined";
+        return threadRegister;
+    }
+
+    @Override
+    public Register getHeapBaseRegister() {
+        assert !heapBaseRegister.equals(Register.None) : "heap base register is not defined";
+        return heapBaseRegister;
+    }
+
+    @Override
+    public Register getStackPointerRegister() {
+        assert !stackPointerRegister.equals(Register.None) : "stack pointer register is not defined";
+        return stackPointerRegister;
+    }
+}