--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graal/com.oracle.max.asmdis/src/com/sun/max/asm/ppc/CRF.java	Sat Dec 17 19:59:18 2011 +0100
@@ -0,0 +1,142 @@
+/*
+ * 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.ppc;
+
+import com.sun.max.asm.*;
+import com.sun.max.util.*;
+
+/**
+ * The constants denoting the eight 4-bit fields into which the 32-bit Condition Register
+ * is logically partitioned.
+ */
+public enum CRF implements EnumerableArgument<CRF> {
+
+    CR0, CR1, CR2, CR3, CR4, CR5, CR6, CR7;
+
+    /**
+     * Determines if a mask of bits only selects one of the 8 condition register fields.
+     */
+    public static boolean isExactlyOneCRFSelected(int mask) {
+        return (mask & (mask - 1)) == 0 && mask > 0 && mask <= 128;
+    }
+
+    public int value() {
+        return ordinal();
+    }
+
+    public long asLong() {
+        return value();
+    }
+
+    public String externalValue() {
+        return Integer.toString(ordinal());
+    }
+
+    public String disassembledValue() {
+        return externalValue();
+    }
+
+    public Enumerator<CRF> enumerator() {
+        return ENUMERATOR;
+    }
+
+    public CRF exampleValue() {
+        return CR0;
+    }
+
+    /**
+     * Given the index of a bit within this 4-bit field, returns the index of the same bit
+     * in the 32-bit Condition Register.
+     * 
+     * @throws IllegalArgumentException if n is not between 0 and 3 inclusive
+     */
+    public int bitFor(int n) {
+        if (n < 0 || n > 3) {
+            throw new IllegalArgumentException("bit specifier must be between 0 and 3");
+        }
+        return ordinal() * 4 + n;
+    }
+
+    /**
+     * @return the index of the bit within the 32-bit Condition Register corresponding to the <i>less than</i> bit in this Condition Register field
+     */
+    public int lt() {
+        return bitFor(LT);
+    }
+
+    /**
+     * @return the index of the bit within the 32-bit Condition Register corresponding to the <i>greater than</i> bit in this Condition Register field
+     */
+    public int gt() {
+        return bitFor(GT);
+    }
+
+    /**
+     * @return the index of the bit within the 32-bit Condition Register corresponding to the <i>equal</i> bit in this Condition Register field
+     */
+    public int eq() {
+        return bitFor(EQ);
+    }
+
+    /**
+     * @return the index of the bit within the 32-bit Condition Register corresponding to the <i>summary overflow</i> bit in this Condition Register field
+     */
+    public int so() {
+        return bitFor(SO);
+    }
+
+    /**
+     * @return the index of the bit within the 32-bit Condition Register corresponding to the <i>unordered (after floating-point comparison)</i> bit in this Condition Register field
+     */
+    public int un() {
+        return bitFor(UN);
+    }
+
+    /**
+     * Index of the bit in a 4-bit Condition Register field indicating a <i>less than</i> condition.
+     */
+    public static final int LT = 0;
+
+    /**
+     * Index of the bit in a 4-bit Condition Register field indicating a <i>greater than</i> condition.
+     */
+    public static final int GT = 1;
+
+    /**
+     * Index of the bit in a 4-bit Condition Register field indicating an <i>equal</i> condition.
+     */
+    public static final int EQ = 2;
+
+    /**
+     * Index of the bit in a 4-bit Condition Register field indicating a <i>summary overflow</i> condition.
+     */
+    public static final int SO = 3;
+
+    /**
+     * Index of the bit in a 4-bit Condition Register field indicating an <i>unordered (after floating-point comparison)</i> condition.
+     */
+    public static final int UN = 3;
+
+    public static final Enumerator<CRF> ENUMERATOR = new Enumerator<CRF>(CRF.class);
+
+}