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comparison graal/com.oracle.max.asmdis/src/com/sun/max/asm/ppc/BranchPredictionBits.java @ 3733:e233f5660da4

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Added Java files from Maxine project.
author Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
date Sat, 17 Dec 2011 19:59:18 +0100
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3732:3e2e8b8abdaf 3733:e233f5660da4
1 /*
2 * Copyright (c) 2007, 2011, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23 package com.sun.max.asm.ppc;
24
25 import com.sun.max.asm.*;
26 import com.sun.max.util.*;
27
28 /**
29 * The branch prediction values for the conditional branches whose encoding includes
30 * a hint about whether the branch is likely to be taken or is likely not to be taken.
31 */
32 public final class BranchPredictionBits extends OptionSuffixSymbolicArgument {
33
34 private BranchPredictionBits(int value, String externalMnemonicSuffix) {
35 super(value, externalMnemonicSuffix);
36 }
37
38 /**
39 * No hint is given.
40 */
41 public static final BranchPredictionBits NONE = new BranchPredictionBits(0, "");
42
43 /**
44 * The branch is very likely to be taken.
45 */
46 public static final BranchPredictionBits PT = new BranchPredictionBits(3, "++");
47
48 /**
49 * The branch is very likely <b>not</b> to be taken.
50 */
51 public static final BranchPredictionBits PN = new BranchPredictionBits(2, "--");
52
53 public static final Symbolizer<BranchPredictionBits> SYMBOLIZER = Symbolizer.Static.initialize(BranchPredictionBits.class);
54 }