Mercurial > hg > graal-compiler

annotate graal/com.oracle.max.graal.hotspot/src/com/oracle/max/graal/hotspot/HotSpotSignature.java @ 3733:e233f5660da4

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Added Java files from Maxine project.
author Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
date Sat, 17 Dec 2011 19:59:18 +0100
parents
children bc8527f3071c
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3733
e233f5660da4 Added Java files from Maxine project.
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1 /*
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2 * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
e233f5660da4 Added Java files from Maxine project.
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
e233f5660da4 Added Java files from Maxine project.
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 */
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23 package com.oracle.max.graal.hotspot;
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24
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25 import java.util.*;
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26
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27 import com.oracle.max.graal.compiler.graphbuilder.*;
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28 import com.sun.cri.ci.*;
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29 import com.sun.cri.ri.*;
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30
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31 /**
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32 * Represents a method signature.
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33 */
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34 public class HotSpotSignature extends CompilerObject implements RiSignature {
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35
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36 private final List<String> arguments = new ArrayList<String>();
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37 private final String returnType;
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38 private final String originalString;
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39 private RiType[] argumentTypes;
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40 private RiType returnTypeCache;
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41
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42 public HotSpotSignature(Compiler compiler, String signature) {
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43 super(compiler);
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44 assert signature.length() > 0;
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45 this.originalString = signature;
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46
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47 if (signature.charAt(0) == '(') {
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48 int cur = 1;
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49 while (cur < signature.length() && signature.charAt(cur) != ')') {
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50 int nextCur = parseSignature(signature, cur);
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51 arguments.add(signature.substring(cur, nextCur));
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52 cur = nextCur;
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53 }
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54
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55 cur++;
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56 int nextCur = parseSignature(signature, cur);
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57 returnType = signature.substring(cur, nextCur);
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58 assert nextCur == signature.length();
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59 } else {
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60 returnType = null;
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61 }
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62 }
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63
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64 private int parseSignature(String signature, int cur) {
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65 char first;
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66 do {
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67 first = signature.charAt(cur++);
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68 } while (first == '[');
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69
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70 switch (first) {
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71 case 'L':
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72 while (signature.charAt(cur) != ';') {
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73 cur++;
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74 }
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75 cur++;
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76 break;
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77 case 'V':
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78 case 'I':
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79 case 'B':
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80 case 'C':
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81 case 'D':
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82 case 'F':
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83 case 'J':
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84 case 'S':
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85 case 'Z':
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86 break;
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87 default:
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88 assert false;
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89 }
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90 return cur;
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91 }
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92
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93 @Override
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94 public int argumentCount(boolean withReceiver) {
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95 return arguments.size() + (withReceiver ? 1 : 0);
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96 }
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97
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98 @Override
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99 public CiKind argumentKindAt(int index, boolean architecture) {
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100 return CiKind.fromTypeString(arguments.get(index));
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101 }
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102
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103 @Override
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104 public int argumentSlots(boolean withReceiver) {
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105 int argSlots = 0;
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106 for (int i = 0; i < argumentCount(false); i++) {
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107 argSlots += FrameStateBuilder.stackSlots(argumentKindAt(i, false));
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108 }
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109 return argSlots + (withReceiver ? 1 : 0);
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110 }
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111
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112 @Override
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113 public RiType argumentTypeAt(int index, RiType accessingClass) {
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114 if (argumentTypes == null) {
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115 argumentTypes = new RiType[arguments.size()];
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116 }
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117 RiType type = argumentTypes[index];
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118 if (type == null) {
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119 type = compiler.lookupType(arguments.get(index), (HotSpotTypeResolved) accessingClass);
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120 argumentTypes[index] = type;
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121 }
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122 return type;
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123 }
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124
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125 @Override
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126 public String asString() {
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127 return originalString;
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128 }
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129
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130 @Override
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131 public CiKind returnKind(boolean architecture) {
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132 return CiKind.fromTypeString(returnType);
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133 }
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134
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135 @Override
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136 public RiType returnType(RiType accessingClass) {
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137 if (returnTypeCache == null) {
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138 returnTypeCache = compiler.lookupType(returnType, (HotSpotTypeResolved) accessingClass);
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139 }
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140 return returnTypeCache;
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141 }
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142
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143 @Override
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144 public String toString() {
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
145 return "HotSpotSignature<" + originalString + ">";
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
146 }
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
147
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff changeset
148 }