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comparison c1x4hotspotsrc/HotSpotVM/src/com/sun/hotspot/c1x/HotSpotProxy.java @ 1423:760213a60e8b

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* rewrite of the code installation * partial support for safepoints * macro-based CiTargetMethod interface * code stub support
author Lukas Stadler <lukas.stadler@oracle.com>
date Mon, 16 Aug 2010 18:59:36 -0700
parents c1x4hotspotsrc/HotSpotVM/src/com/sun/hotspot/c1x/HotSpotInternalObject.java@6223633ce7dd
children 149b1d2316de
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1422:3483ec571caf 1423:760213a60e8b
1 /*
2 * Copyright (c) 2010 Sun Microsystems, Inc. All rights reserved.
3 *
4 * Sun Microsystems, Inc. has intellectual property rights relating to technology embodied in the product that is
5 * described in this document. In particular, and without limitation, these intellectual property rights may include one
6 * or more of the U.S. patents listed at http://www.sun.com/patents and one or more additional patents or pending patent
7 * applications in the U.S. and in other countries.
8 *
9 * U.S. Government Rights - Commercial software. Government users are subject to the Sun Microsystems, Inc. standard
10 * license agreement and applicable provisions of the FAR and its supplements.
11 *
12 * Use is subject to license terms. Sun, Sun Microsystems, the Sun logo, Java and Solaris are trademarks or registered
13 * trademarks of Sun Microsystems, Inc. in the U.S. and other countries. All SPARC trademarks are used under license and
14 * are trademarks or registered trademarks of SPARC International, Inc. in the U.S. and other countries.
15 *
16 * UNIX is a registered trademark in the U.S. and other countries, exclusively licensed through X/Open Company, Ltd.
17 */
18 package com.sun.hotspot.c1x;
19
20 /**
21 * Provides methods to classify the HotSpot-internal identifiers.
22 *
23 * @author Lukas Stadler
24 */
25 public class HotSpotProxy {
26
27 private HotSpotProxy() {
28 }
29
30 private enum CompilerObjectType {
31 // this enum needs to have the same values as the one in c1x_Compiler.hpp
32 STUB(0x100000000000000l),
33 METHOD(0x200000000000000l),
34 CLASS(0x300000000000000l),
35 SYMBOL(0x400000000000000l),
36 CONSTANT_POOL(0x500000000000000l),
37 CONSTANT(0x600000000000000l),
38 TYPE_MASK(0xf00000000000000l);
39
40 public final long bits;
41
42 CompilerObjectType(long bits) {
43 this.bits = bits;
44 }
45 }
46
47 private static boolean isType(long id, CompilerObjectType type) {
48 return (id & CompilerObjectType.TYPE_MASK.bits) == type.bits;
49 }
50
51 public static boolean isStub(long id) {
52 return isType(id, CompilerObjectType.STUB);
53 }
54
55 public static boolean isMethod(long id) {
56 return isType(id, CompilerObjectType.METHOD);
57 }
58
59 public static boolean isClass(long id) {
60 return isType(id, CompilerObjectType.CLASS);
61 }
62
63 public static boolean isSymbol(long id) {
64 return isType(id, CompilerObjectType.SYMBOL);
65 }
66
67 public static boolean isConstantPool(long id) {
68 return isType(id, CompilerObjectType.CONSTANT_POOL);
69 }
70
71 public static boolean isConstant(long id) {
72 return isType(id, CompilerObjectType.CONSTANT_POOL);
73 }
74
75 public static String toString(long id) {
76 CompilerObjectType type = null;
77 for (CompilerObjectType t : CompilerObjectType.values()) {
78 if ((id & CompilerObjectType.TYPE_MASK.bits) == t.bits) {
79 type = t;
80 }
81 }
82 long num = id & ~CompilerObjectType.TYPE_MASK.bits;
83 return type + " " + num;
84 }
85
86 }