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annotate c1x4hotspotsrc/HotSpotVM/src/com/sun/hotspot/c1x/HotSpotProxy.java @ 1427:149b1d2316de

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basic invokeinterface and invokevirtual support
author Lukas Stadler <lukas.stadler@oracle.com>
date Wed, 18 Aug 2010 16:47:06 -0700
parents 760213a60e8b
children 9e5e83ca2259
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1 /*
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2 * Copyright (c) 2010 Sun Microsystems, Inc. All rights reserved.
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3 *
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4 * Sun Microsystems, Inc. has intellectual property rights relating to technology embodied in the product that is
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5 * described in this document. In particular, and without limitation, these intellectual property rights may include one
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6 * or more of the U.S. patents listed at http://www.sun.com/patents and one or more additional patents or pending patent
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7 * applications in the U.S. and in other countries.
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8 *
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9 * U.S. Government Rights - Commercial software. Government users are subject to the Sun Microsystems, Inc. standard
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10 * license agreement and applicable provisions of the FAR and its supplements.
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11 *
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12 * Use is subject to license terms. Sun, Sun Microsystems, the Sun logo, Java and Solaris are trademarks or registered
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13 * trademarks of Sun Microsystems, Inc. in the U.S. and other countries. All SPARC trademarks are used under license and
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14 * are trademarks or registered trademarks of SPARC International, Inc. in the U.S. and other countries.
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15 *
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16 * UNIX is a registered trademark in the U.S. and other countries, exclusively licensed through X/Open Company, Ltd.
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17 */
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18 package com.sun.hotspot.c1x;
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20 /**
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21 * Provides methods to classify the HotSpot-internal identifiers.
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22 *
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23 * @author Lukas Stadler
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24 */
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25 public class HotSpotProxy {
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27 private HotSpotProxy() {
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28 }
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29
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30 private enum CompilerObjectType {
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31 // this enum needs to have the same values as the one in c1x_Compiler.hpp
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32 STUB(0x100000000000000L),
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33 METHOD(0x200000000000000L),
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34 CLASS(0x300000000000000L),
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35 SYMBOL(0x400000000000000L),
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36 CONSTANT_POOL(0x500000000000000L),
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37 CONSTANT(0x600000000000000L),
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38 TYPE_MASK(0xf00000000000000L),
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39 DUMMY_CONSTANT(0x6ffffffffffffffL);
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40
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41 public final long bits;
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42
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43 CompilerObjectType(long bits) {
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44 this.bits = bits;
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45 }
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46 }
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47
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48 public static final Long DUMMY_CONSTANT_OBJ = CompilerObjectType.DUMMY_CONSTANT.bits;
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49
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50 private static boolean isType(long id, CompilerObjectType type) {
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51 return (id & CompilerObjectType.TYPE_MASK.bits) == type.bits;
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52 }
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53
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54 public static boolean isStub(long id) {
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55 return isType(id, CompilerObjectType.STUB);
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56 }
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57
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58 public static boolean isMethod(long id) {
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59 return isType(id, CompilerObjectType.METHOD);
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60 }
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61
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62 public static boolean isClass(long id) {
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63 return isType(id, CompilerObjectType.CLASS);
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64 }
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65
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66 public static boolean isSymbol(long id) {
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67 return isType(id, CompilerObjectType.SYMBOL);
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68 }
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69
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70 public static boolean isConstantPool(long id) {
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71 return isType(id, CompilerObjectType.CONSTANT_POOL);
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72 }
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73
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74 public static boolean isConstant(long id) {
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75 return isType(id, CompilerObjectType.CONSTANT_POOL);
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76 }
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77
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78 public static String toString(long id) {
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79 CompilerObjectType type = null;
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80 for (CompilerObjectType t : CompilerObjectType.values()) {
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81 if ((id & CompilerObjectType.TYPE_MASK.bits) == t.bits) {
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82 type = t;
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83 }
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84 }
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85 long num = id & ~CompilerObjectType.TYPE_MASK.bits;
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86 return type + " " + num;
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87 }
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88
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89 }