--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/com.oracle.max.asmdis/src/com/sun/max/asm/amd64/AMD64BaseRegister64.java	Sat Dec 17 19:59:18 2011 +0100
@@ -0,0 +1,88 @@
+/*
+ * Copyright (c) 2007, 2011, 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 com.sun.max.asm.amd64;
+
+import com.sun.max.asm.x86.*;
+import com.sun.max.lang.*;
+import com.sun.max.util.*;
+
+/**
+ * Aliases for 64-bit AMD64 general registers to be used as base registers.
+ */
+public enum AMD64BaseRegister64 implements GeneralRegister<AMD64BaseRegister64> {
+
+    RAX_BASE,
+    RCX_BASE,
+    RDX_BASE,
+    RBX_BASE,
+    RSP_BASE,
+    RBP_BASE,
+    RSI_BASE,
+    RDI_BASE,
+    R8_BASE,
+    R9_BASE,
+    R10_BASE,
+    R11_BASE,
+    R12_BASE,
+    R13_BASE,
+    R14_BASE,
+    R15_BASE;
+
+    public static final Enumerator<AMD64BaseRegister64> ENUMERATOR = new Enumerator<AMD64BaseRegister64>(AMD64BaseRegister64.class);
+
+    public static AMD64BaseRegister64 from(GeneralRegister generalRegister) {
+        return ENUMERATOR.get(generalRegister.id());
+    }
+
+    public WordWidth width() {
+        return WordWidth.BITS_64;
+    }
+
+    public int id() {
+        return ordinal();
+    }
+
+    public int value() {
+        return id();
+    }
+
+    public long asLong() {
+        return value();
+    }
+
+    public String externalValue() {
+        return AMD64GeneralRegister64.from(this).externalValue();
+    }
+
+    public String disassembledValue() {
+        return AMD64GeneralRegister64.from(this).disassembledValue();
+    }
+
+    public Enumerator<AMD64BaseRegister64> enumerator() {
+        return ENUMERATOR;
+    }
+
+    public AMD64BaseRegister64 exampleValue() {
+        return RBX_BASE;
+    }
+}