Mercurial > hg > graal-compiler
annotate agent/src/share/classes/sun/jvm/hotspot/runtime/VMReg.java @ 2426:1d1603768966
7010070: Update all 2010 Oracle-changed OpenJDK files to have the proper copyright dates - second pass
Summary: Update the copyright to be 2010 on all changed files in OpenJDK
Reviewed-by: ohair
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date | Tue, 05 Apr 2011 14:12:31 -0700 |
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0 | 1 /* |
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2 * Copyright (c) 2000, 2003, Oracle and/or its affiliates. All rights reserved. |
0 | 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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
25 package sun.jvm.hotspot.runtime; | |
26 | |
27 import java.util.*; | |
28 | |
29 import sun.jvm.hotspot.debugger.*; | |
30 import sun.jvm.hotspot.types.*; | |
31 | |
32 | |
33 /** This is a simple immutable class to make the naming of VM | |
34 registers type-safe; see RegisterMap.java and frame.hpp. */ | |
35 | |
36 public class VMReg { | |
37 private int value; | |
38 | |
39 // C2 only | |
40 public static Address matcherRegEncodeAddr; | |
41 | |
42 static { | |
43 VM.registerVMInitializedObserver(new Observer() { | |
44 public void update(Observable o, Object data) { | |
45 initialize(VM.getVM().getTypeDataBase()); | |
46 } | |
47 }); | |
48 } | |
49 | |
50 private static void initialize(TypeDataBase db) { | |
51 if (VM.getVM().isServerCompiler()) { | |
52 Type type = db.lookupType("Matcher"); | |
53 Field f = type.getField("_regEncode"); | |
54 matcherRegEncodeAddr = f.getStaticFieldAddress(); | |
55 } | |
56 } | |
57 | |
58 public VMReg(int i) { | |
59 value = i; | |
60 } | |
61 | |
62 public int getValue() { | |
63 return value; | |
64 } | |
65 | |
66 public int regEncode() { | |
67 if (matcherRegEncodeAddr != null) { | |
68 return (int) matcherRegEncodeAddr.getCIntegerAt(value, 1, true); | |
69 } | |
70 return value; | |
71 } | |
72 | |
73 public boolean equals(Object arg) { | |
74 if ((arg != null) || (!(arg instanceof VMReg))) { | |
75 return false; | |
76 } | |
77 | |
78 return ((VMReg) arg).value == value; | |
79 } | |
80 | |
81 public boolean lessThan(VMReg arg) { return value < arg.value; } | |
82 public boolean lessThanOrEqual(VMReg arg) { return value <= arg.value; } | |
83 public boolean greaterThan(VMReg arg) { return value > arg.value; } | |
84 public boolean greaterThanOrEqual(VMReg arg) { return value >= arg.value; } | |
85 | |
86 public int minus(VMReg arg) { return value - arg.value; } | |
87 } |