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annotate c1x4hotspotsrc/HotSpotVM/src/com/sun/hotspot/c1x/HotSpotSignature.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 3483ec571caf
children efba53f86c4f
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1 /*
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2 * Copyright (c) 2009-2010 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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19
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20 import java.util.*;
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21
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22 import com.sun.cri.ci.*;
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23 import com.sun.cri.ri.*;
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24
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25 /**
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26 * Represents a method signature.
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27 *
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28 * @author Thomas Wuerthinger, Lukas Stadler
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29 */
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30 public class HotSpotSignature implements RiSignature, CompilerObject {
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31
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32 private final List<String> arguments = new ArrayList<String>();
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33 private final String returnType;
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34 private final String originalString;
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35
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36 public HotSpotSignature(String signature) {
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37 assert signature.length() > 0;
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38 this.originalString = signature;
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39
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40 if (signature.charAt(0) == '(') {
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41 int cur = 1;
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42 while (cur < signature.length() && signature.charAt(cur) != ')') {
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43 int nextCur = parseSignature(signature, cur);
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44 arguments.add(signature.substring(cur, nextCur));
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45 cur = nextCur;
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46 }
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47
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48 cur++;
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49 int nextCur = parseSignature(signature, cur);
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50 returnType = signature.substring(cur, nextCur);
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51 assert nextCur == signature.length();
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52 } else {
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53 returnType = null;
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54 }
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55 }
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56
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57 private int parseSignature(String signature, int cur) {
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58 char first;
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59 do {
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60 first = signature.charAt(cur++);
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61 } while(first == '[');
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62
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63 switch (first) {
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64 case 'L':
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65 while (signature.charAt(cur) != ';')
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66 cur++;
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67 cur++;
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68 break;
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69 case 'V':
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70 case 'I':
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71 case 'B':
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72 case 'C':
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73 case 'D':
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74 case 'F':
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75 case 'J':
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76 case 'S':
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77 case 'Z':
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78 break;
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79 default:
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80 assert false;
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81 }
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82 return cur;
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83 }
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84
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85 @Override
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86 public int argumentCount(boolean withReceiver) {
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87 return arguments.size() + (withReceiver ? 1 : 0);
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88 }
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89
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90 @Override
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91 public CiKind argumentKindAt(int index) {
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92 return CiKind.fromTypeString(arguments.get(index));
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93 }
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94
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95 @Override
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96 public int argumentSlots(boolean withReceiver) {
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97
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98 int argSlots = 0;
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99 for (int i = 0; i < argumentCount(false); i++) {
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100 argSlots += argumentKindAt(i).sizeInSlots();
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101 }
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102
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103 return argSlots + (withReceiver ? 1 : 0);
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104 }
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105
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106 @Override
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107 public RiType argumentTypeAt(int index, RiType accessingClass) {
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108 long accessor = 0;
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109 if (accessingClass instanceof HotSpotTypeResolved) {
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110 accessor = (Long) ((HotSpotTypeResolved) accessingClass).getVmId();
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111 }
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112 return Compiler.getVMEntries().RiSignature_lookupType(arguments.get(index), accessor);
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113 }
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114
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115 @Override
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116 public String asString() {
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117 return originalString;
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118 }
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119
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120 @Override
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121 public CiKind returnKind() {
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122 return CiKind.fromTypeString(returnType);
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123 }
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124
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125 @Override
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126 public RiType returnType(RiType accessingClass) {
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127 long accessor = 0;
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128 if (accessingClass instanceof HotSpotTypeResolved) {
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129 accessor = (Long) ((HotSpotTypeResolved) accessingClass).getVmId();
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130 }
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131 return Compiler.getVMEntries().RiSignature_lookupType(returnType, accessor);
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132 }
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133
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134 @Override
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135 public String toString() {
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136 return "HotSpotSignature<" + originalString + ">";
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137 }
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138
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139 }