Mercurial > hg > graal-jvmci-8
annotate graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/meta/HotSpotConstantPool.java @ 18530:2906b3cc3e2f
moved application of Remote marker interface to implementation classes only
author | Doug Simon <doug.simon@oracle.com> |
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date | Wed, 26 Nov 2014 13:20:14 +0100 |
parents | c538c2c6b7e2 |
children | 21384a8fbb64 |
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1 /* |
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2 * Copyright (c) 2011, 2014, 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 |
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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 |
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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.graal.hotspot.meta; |
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24 |
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25 import static com.oracle.graal.compiler.common.UnsafeAccess.*; |
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26 import static com.oracle.graal.hotspot.HotSpotGraalRuntime.*; |
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27 |
14093 | 28 import java.lang.invoke.*; |
29 | |
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30 import com.oracle.graal.api.meta.*; |
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31 import com.oracle.graal.bytecode.*; |
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32 import com.oracle.graal.compiler.common.*; |
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33 import com.oracle.graal.hotspot.*; |
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34 |
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35 /** |
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36 * Implementation of {@link ConstantPool} for HotSpot. |
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37 */ |
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38 public class HotSpotConstantPool extends CompilerObject implements ConstantPool, Remote { |
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39 |
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40 private static final long serialVersionUID = -5443206401485234850L; |
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41 |
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42 /** |
14529 | 43 * Enum of all {@code JVM_CONSTANT} constants used in the VM. This includes the public and |
44 * internal ones. | |
45 */ | |
46 private enum JVM_CONSTANT { | |
47 // @formatter:off | |
48 Utf8(config().jvmConstantUtf8), | |
49 Integer(config().jvmConstantInteger), | |
50 Long(config().jvmConstantLong), | |
51 Float(config().jvmConstantFloat), | |
52 Double(config().jvmConstantDouble), | |
53 Class(config().jvmConstantClass), | |
54 UnresolvedClass(config().jvmConstantUnresolvedClass), | |
55 UnresolvedClassInError(config().jvmConstantUnresolvedClassInError), | |
56 String(config().jvmConstantString), | |
57 Fieldref(config().jvmConstantFieldref), | |
58 MethodRef(config().jvmConstantMethodref), | |
59 InterfaceMethodref(config().jvmConstantInterfaceMethodref), | |
60 NameAndType(config().jvmConstantNameAndType), | |
61 MethodHandle(config().jvmConstantMethodHandle), | |
62 MethodHandleInError(config().jvmConstantMethodHandleInError), | |
63 MethodType(config().jvmConstantMethodType), | |
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64 MethodTypeInError(config().jvmConstantMethodTypeInError), |
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65 InvokeDynamic(config().jvmConstantInvokeDynamic); |
14529 | 66 // @formatter:on |
67 | |
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68 private final int tag; |
14529 | 69 |
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70 private static final int ExternalMax = config().jvmConstantExternalMax; |
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71 private static final int InternalMin = config().jvmConstantInternalMin; |
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72 private static final int InternalMax = config().jvmConstantInternalMax; |
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73 |
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74 private JVM_CONSTANT(int tag) { |
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75 this.tag = tag; |
14529 | 76 } |
77 | |
78 private static HotSpotVMConfig config() { | |
79 return runtime().getConfig(); | |
80 } | |
81 | |
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82 /** |
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83 * Maps JVM_CONSTANT tags to {@link JVM_CONSTANT} values. Using a separate class for lazy |
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84 * initialization. |
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85 */ |
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86 static class TagValueMap { |
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87 private static final JVM_CONSTANT[] table = new JVM_CONSTANT[ExternalMax + 1 + (InternalMax - InternalMin) + 1]; |
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88 static { |
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89 assert InternalMin > ExternalMax; |
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90 for (JVM_CONSTANT e : values()) { |
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91 table[indexOf(e.tag)] = e; |
14529 | 92 } |
93 } | |
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94 |
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95 private static int indexOf(int tag) { |
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96 if (tag >= InternalMin) { |
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97 return tag - InternalMin + ExternalMax + 1; |
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98 } else { |
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99 assert tag <= ExternalMax; |
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100 } |
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101 return tag; |
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102 } |
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103 |
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104 static JVM_CONSTANT get(int tag) { |
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105 JVM_CONSTANT res = table[indexOf(tag)]; |
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106 if (res != null) { |
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107 return res; |
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108 } |
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109 throw GraalInternalError.shouldNotReachHere("unknown JVM_CONSTANT tag " + tag); |
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110 } |
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111 } |
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112 |
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113 public static JVM_CONSTANT getEnum(int tag) { |
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114 return TagValueMap.get(tag); |
14529 | 115 } |
116 } | |
117 | |
118 /** | |
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119 * Reference to the C++ ConstantPool object. |
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120 */ |
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121 private final long metaspaceConstantPool; |
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122 |
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123 public HotSpotConstantPool(long metaspaceConstantPool) { |
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124 this.metaspaceConstantPool = metaspaceConstantPool; |
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125 } |
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126 |
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127 /** |
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128 * Gets the holder for this constant pool as {@link HotSpotResolvedObjectTypeImpl}. |
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129 * |
14093 | 130 * @return holder for this constant pool |
131 */ | |
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132 private HotSpotResolvedObjectType getHolder() { |
14093 | 133 final long metaspaceKlass = unsafe.getAddress(metaspaceConstantPool + runtime().getConfig().constantPoolHolderOffset); |
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134 return HotSpotResolvedObjectTypeImpl.fromMetaspaceKlass(metaspaceKlass); |
14093 | 135 } |
136 | |
137 /** | |
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138 * Converts a raw index from the bytecodes to a constant pool index by adding a |
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139 * {@link HotSpotVMConfig#constantPoolCpCacheIndexTag constant}. |
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140 * |
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141 * @param rawIndex index from the bytecode |
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142 * @param opcode bytecode to convert the index for |
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143 * @return constant pool index |
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144 */ |
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145 private static int toConstantPoolIndex(int rawIndex, int opcode) { |
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146 int index; |
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147 if (opcode == Bytecodes.INVOKEDYNAMIC) { |
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148 index = rawIndex; |
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149 // See: ConstantPool::is_invokedynamic_index |
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150 assert index < 0 : "not an invokedynamic constant pool index " + index; |
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151 } else { |
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152 assert opcode == Bytecodes.GETFIELD || opcode == Bytecodes.PUTFIELD || opcode == Bytecodes.GETSTATIC || opcode == Bytecodes.PUTSTATIC || opcode == Bytecodes.INVOKEINTERFACE || |
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153 opcode == Bytecodes.INVOKEVIRTUAL || opcode == Bytecodes.INVOKESPECIAL || opcode == Bytecodes.INVOKESTATIC : "unexpected invoke opcode " + Bytecodes.nameOf(opcode); |
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154 index = rawIndex + runtime().getConfig().constantPoolCpCacheIndexTag; |
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155 } |
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156 return index; |
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157 } |
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158 |
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159 /** |
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160 * Decode a constant pool cache index to a constant pool index. |
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161 * |
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162 * See {@code ConstantPool::decode_cpcache_index}. |
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163 * |
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164 * @param index constant pool cache index |
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165 * @return decoded index |
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166 */ |
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167 private static int decodeConstantPoolCacheIndex(int index) { |
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168 if (isInvokedynamicIndex(index)) { |
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169 return decodeInvokedynamicIndex(index); |
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170 } else { |
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171 return index - runtime().getConfig().constantPoolCpCacheIndexTag; |
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172 } |
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173 } |
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174 |
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175 /** |
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176 * See {@code ConstantPool::is_invokedynamic_index}. |
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177 */ |
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178 private static boolean isInvokedynamicIndex(int index) { |
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179 return index < 0; |
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180 } |
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181 |
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182 /** |
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183 * See {@code ConstantPool::decode_invokedynamic_index}. |
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184 */ |
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185 private static int decodeInvokedynamicIndex(int i) { |
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186 assert isInvokedynamicIndex(i) : i; |
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187 return ~i; |
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188 } |
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189 |
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190 /** |
14093 | 191 * Gets the constant pool tag at index {@code index}. |
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192 * |
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193 * @param index constant pool index |
14093 | 194 * @return constant pool tag |
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195 */ |
14529 | 196 private JVM_CONSTANT getTagAt(int index) { |
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197 assertBounds(index); |
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198 HotSpotVMConfig config = runtime().getConfig(); |
14529 | 199 final long metaspaceConstantPoolTags = unsafe.getAddress(metaspaceConstantPool + config.constantPoolTagsOffset); |
200 final int tag = unsafe.getByteVolatile(null, metaspaceConstantPoolTags + config.arrayU1DataOffset + index); | |
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201 if (tag == 0) { |
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202 return null; |
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203 } |
14529 | 204 return JVM_CONSTANT.getEnum(tag); |
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205 } |
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206 |
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207 /** |
14093 | 208 * Gets the constant pool entry at index {@code index}. |
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209 * |
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210 * @param index constant pool index |
14093 | 211 * @return constant pool entry |
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212 */ |
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213 private long getEntryAt(int index) { |
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214 assertBounds(index); |
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215 return unsafe.getAddress(metaspaceConstantPool + runtime().getConfig().constantPoolSize + index * runtime().getTarget().wordSize); |
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216 } |
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217 |
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218 /** |
14093 | 219 * Gets the integer constant pool entry at index {@code index}. |
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220 * |
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221 * @param index constant pool index |
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222 * @return integer constant pool entry at index |
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223 */ |
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224 private int getIntAt(int index) { |
14529 | 225 assertTag(index, JVM_CONSTANT.Integer); |
226 return unsafe.getInt(metaspaceConstantPool + runtime().getConfig().constantPoolSize + index * runtime().getTarget().wordSize); | |
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227 } |
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228 |
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229 /** |
14093 | 230 * Gets the long constant pool entry at index {@code index}. |
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231 * |
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232 * @param index constant pool index |
14093 | 233 * @return long constant pool entry |
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234 */ |
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235 private long getLongAt(int index) { |
14529 | 236 assertTag(index, JVM_CONSTANT.Long); |
237 return unsafe.getLong(metaspaceConstantPool + runtime().getConfig().constantPoolSize + index * runtime().getTarget().wordSize); | |
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238 } |
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239 |
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240 /** |
14093 | 241 * Gets the float constant pool entry at index {@code index}. |
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242 * |
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243 * @param index constant pool index |
14093 | 244 * @return float constant pool entry |
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245 */ |
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246 private float getFloatAt(int index) { |
14529 | 247 assertTag(index, JVM_CONSTANT.Float); |
248 return unsafe.getFloat(metaspaceConstantPool + runtime().getConfig().constantPoolSize + index * runtime().getTarget().wordSize); | |
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249 } |
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250 |
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251 /** |
14093 | 252 * Gets the double constant pool entry at index {@code index}. |
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253 * |
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254 * @param index constant pool index |
14093 | 255 * @return float constant pool entry |
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256 */ |
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257 private double getDoubleAt(int index) { |
14529 | 258 assertTag(index, JVM_CONSTANT.Double); |
259 return unsafe.getDouble(metaspaceConstantPool + runtime().getConfig().constantPoolSize + index * runtime().getTarget().wordSize); | |
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260 } |
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261 |
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262 /** |
14093 | 263 * Gets the {@code JVM_CONSTANT_NameAndType} constant pool entry at index {@code index}. |
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264 * |
14093 | 265 * @param index constant pool index |
266 * @return {@code JVM_CONSTANT_NameAndType} constant pool entry | |
267 */ | |
268 private int getNameAndTypeAt(int index) { | |
14529 | 269 assertTag(index, JVM_CONSTANT.NameAndType); |
270 return unsafe.getInt(metaspaceConstantPool + runtime().getConfig().constantPoolSize + index * runtime().getTarget().wordSize); | |
14093 | 271 } |
272 | |
273 /** | |
274 * Gets the {@code JVM_CONSTANT_NameAndType} reference index constant pool entry at index | |
275 * {@code index}. | |
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276 * |
14093 | 277 * @param index constant pool index |
278 * @return {@code JVM_CONSTANT_NameAndType} reference constant pool entry | |
279 */ | |
280 private int getNameAndTypeRefIndexAt(int index) { | |
281 return runtime().getCompilerToVM().lookupNameAndTypeRefIndexInPool(metaspaceConstantPool, index); | |
282 } | |
283 | |
284 /** | |
285 * Gets the name of a {@code JVM_CONSTANT_NameAndType} constant pool entry at index | |
286 * {@code index}. | |
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287 * |
14093 | 288 * @param index constant pool index |
289 * @return name as {@link String} | |
290 */ | |
291 private String getNameRefAt(int index) { | |
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292 return runtime().getCompilerToVM().lookupNameRefInPool(metaspaceConstantPool, index); |
14093 | 293 } |
294 | |
295 /** | |
296 * Gets the name reference index of a {@code JVM_CONSTANT_NameAndType} constant pool entry at | |
297 * index {@code index}. | |
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298 * |
14093 | 299 * @param index constant pool index |
300 * @return name reference index | |
301 */ | |
302 private int getNameRefIndexAt(int index) { | |
303 final int refIndex = getNameAndTypeAt(index); | |
304 // name ref index is in the low 16-bits. | |
305 return refIndex & 0xFFFF; | |
306 } | |
307 | |
308 /** | |
309 * Gets the signature of a {@code JVM_CONSTANT_NameAndType} constant pool entry at index | |
310 * {@code index}. | |
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311 * |
14093 | 312 * @param index constant pool index |
313 * @return signature as {@link String} | |
314 */ | |
315 private String getSignatureRefAt(int index) { | |
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316 return runtime().getCompilerToVM().lookupSignatureRefInPool(metaspaceConstantPool, index); |
14093 | 317 } |
318 | |
319 /** | |
320 * Gets the signature reference index of a {@code JVM_CONSTANT_NameAndType} constant pool entry | |
321 * at index {@code index}. | |
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322 * |
14093 | 323 * @param index constant pool index |
324 * @return signature reference index | |
325 */ | |
326 private int getSignatureRefIndexAt(int index) { | |
327 final int refIndex = getNameAndTypeAt(index); | |
328 // signature ref index is in the high 16-bits. | |
329 return refIndex >>> 16; | |
330 } | |
331 | |
332 /** | |
333 * Gets the klass reference index constant pool entry at index {@code index}. | |
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334 * |
14093 | 335 * @param index constant pool index |
336 * @return klass reference index | |
337 */ | |
338 private int getKlassRefIndexAt(int index) { | |
339 return runtime().getCompilerToVM().lookupKlassRefIndexInPool(metaspaceConstantPool, index); | |
340 } | |
341 | |
342 /** | |
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343 * Gets the uncached klass reference index constant pool entry at index {@code index}. See: |
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344 * {@code ConstantPool::uncached_klass_ref_index_at}. |
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345 * |
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346 * @param index constant pool index |
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347 * @return klass reference index |
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348 */ |
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349 private int getUncachedKlassRefIndexAt(int index) { |
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350 assert getTagAt(index) == JVM_CONSTANT.Fieldref || getTagAt(index) == JVM_CONSTANT.MethodRef || getTagAt(index) == JVM_CONSTANT.InterfaceMethodref; |
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351 final int refIndex = unsafe.getInt(metaspaceConstantPool + runtime().getConfig().constantPoolSize + index * runtime().getTarget().wordSize); |
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352 // klass ref index is in the low 16-bits. |
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353 return refIndex & 0xFFFF; |
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354 } |
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355 |
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356 /** |
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357 * Asserts that the constant pool index {@code index} is in the bounds of the constant pool. |
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358 * |
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359 * @param index constant pool index |
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360 */ |
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361 private void assertBounds(int index) { |
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362 assert 0 <= index && index < length() : "index " + index + " not between 0 and " + length(); |
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363 } |
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364 |
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365 /** |
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366 * Asserts that the constant pool tag at index {@code index} is equal to {@code tag}. |
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367 * |
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368 * @param index constant pool index |
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369 * @param tag expected tag |
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370 */ |
14529 | 371 private void assertTag(int index, JVM_CONSTANT tag) { |
372 assert getTagAt(index) == tag : "constant pool tag at index " + index + " is " + getTagAt(index) + " but expected " + tag; | |
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373 } |
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374 |
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375 @Override |
9108 | 376 public int length() { |
14529 | 377 return unsafe.getInt(metaspaceConstantPool + runtime().getConfig().constantPoolLengthOffset); |
9108 | 378 } |
379 | |
380 @Override | |
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381 public Object lookupConstant(int cpi) { |
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382 assert cpi != 0; |
14529 | 383 final JVM_CONSTANT tag = getTagAt(cpi); |
384 switch (tag) { | |
385 case Integer: | |
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386 return JavaConstant.forInt(getIntAt(cpi)); |
14529 | 387 case Long: |
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388 return JavaConstant.forLong(getLongAt(cpi)); |
14529 | 389 case Float: |
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390 return JavaConstant.forFloat(getFloatAt(cpi)); |
14529 | 391 case Double: |
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392 return JavaConstant.forDouble(getDoubleAt(cpi)); |
14529 | 393 case Class: |
394 case UnresolvedClass: | |
395 case UnresolvedClassInError: | |
396 final int opcode = -1; // opcode is not used | |
397 return lookupType(cpi, opcode); | |
398 case String: | |
399 Object string = runtime().getCompilerToVM().resolvePossiblyCachedConstantInPool(metaspaceConstantPool, cpi); | |
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400 return HotSpotObjectConstantImpl.forObject(string); |
14529 | 401 case MethodHandle: |
402 case MethodHandleInError: | |
403 case MethodType: | |
404 case MethodTypeInError: | |
405 Object obj = runtime().getCompilerToVM().resolveConstantInPool(metaspaceConstantPool, cpi); | |
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406 return HotSpotObjectConstantImpl.forObject(obj); |
14529 | 407 default: |
408 throw GraalInternalError.shouldNotReachHere("unknown constant pool tag " + tag); | |
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409 } |
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410 } |
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411 |
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412 @Override |
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413 public String lookupUtf8(int cpi) { |
14529 | 414 assertTag(cpi, JVM_CONSTANT.Utf8); |
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415 return runtime().getCompilerToVM().getSymbol(getEntryAt(cpi)); |
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416 } |
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417 |
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418 @Override |
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419 public Signature lookupSignature(int cpi) { |
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420 return new HotSpotSignature(lookupUtf8(cpi)); |
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421 } |
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422 |
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423 @Override |
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424 public JavaConstant lookupAppendix(int cpi, int opcode) { |
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425 assert Bytecodes.isInvoke(opcode); |
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426 final int index = toConstantPoolIndex(cpi, opcode); |
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427 Object result = runtime().getCompilerToVM().lookupAppendixInPool(metaspaceConstantPool, index); |
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428 if (result == null) { |
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429 return null; |
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430 } else { |
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431 return HotSpotObjectConstantImpl.forObject(result); |
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432 } |
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433 } |
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434 |
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435 /** |
14093 | 436 * Gets a {@link JavaType} corresponding a given metaspace Klass or a metaspace Symbol depending |
437 * on the {@link HotSpotVMConfig#compilerToVMKlassTag tag}. | |
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438 * |
14093 | 439 * @param metaspacePointer either a metaspace Klass or a metaspace Symbol |
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440 */ |
14093 | 441 private static JavaType getJavaType(final long metaspacePointer) { |
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442 HotSpotGraalRuntimeProvider runtime = runtime(); |
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443 HotSpotVMConfig config = runtime.getConfig(); |
14093 | 444 if ((metaspacePointer & config.compilerToVMSymbolTag) != 0) { |
445 final long metaspaceSymbol = metaspacePointer & ~config.compilerToVMSymbolTag; | |
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446 String name = runtime.getCompilerToVM().getSymbol(metaspaceSymbol); |
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447 return HotSpotUnresolvedJavaType.create("L" + name + ";"); |
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448 } else { |
14093 | 449 assert (metaspacePointer & config.compilerToVMKlassTag) == 0; |
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450 return HotSpotResolvedObjectTypeImpl.fromMetaspaceKlass(metaspacePointer); |
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451 } |
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452 } |
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453 |
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454 @Override |
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455 public JavaMethod lookupMethod(int cpi, int opcode) { |
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456 final int index = toConstantPoolIndex(cpi, opcode); |
14093 | 457 final long metaspaceMethod = runtime().getCompilerToVM().lookupMethodInPool(metaspaceConstantPool, index, (byte) opcode); |
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458 if (metaspaceMethod != 0L) { |
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459 return HotSpotResolvedJavaMethodImpl.fromMetaspace(metaspaceMethod); |
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460 } else { |
14093 | 461 // Get the method's name and signature. |
462 String name = getNameRefAt(index); | |
463 String signature = getSignatureRefAt(index); | |
464 if (opcode == Bytecodes.INVOKEDYNAMIC) { | |
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465 HotSpotResolvedObjectTypeImpl holder = HotSpotResolvedObjectTypeImpl.fromObjectClass(MethodHandle.class); |
14093 | 466 return new HotSpotMethodUnresolved(name, signature, holder); |
467 } else { | |
468 final int klassIndex = getKlassRefIndexAt(index); | |
469 final long metaspacePointer = runtime().getCompilerToVM().lookupKlassInPool(metaspaceConstantPool, klassIndex); | |
470 JavaType holder = getJavaType(metaspacePointer); | |
471 return new HotSpotMethodUnresolved(name, signature, holder); | |
472 } | |
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473 } |
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474 } |
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475 |
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476 @Override |
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477 public JavaType lookupType(int cpi, int opcode) { |
14093 | 478 final long metaspacePointer = runtime().getCompilerToVM().lookupKlassInPool(metaspaceConstantPool, cpi); |
479 return getJavaType(metaspacePointer); | |
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480 } |
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481 |
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482 @Override |
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483 public JavaField lookupField(int cpi, int opcode) { |
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484 final int index = toConstantPoolIndex(cpi, opcode); |
14093 | 485 final int nameAndTypeIndex = getNameAndTypeRefIndexAt(index); |
486 final int nameIndex = getNameRefIndexAt(nameAndTypeIndex); | |
487 String name = lookupUtf8(nameIndex); | |
488 final int typeIndex = getSignatureRefIndexAt(nameAndTypeIndex); | |
489 String typeName = lookupUtf8(typeIndex); | |
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490 JavaType type = runtime().lookupType(typeName, getHolder(), false); |
14093 | 491 |
492 final int holderIndex = getKlassRefIndexAt(index); | |
493 JavaType holder = lookupType(holderIndex, opcode); | |
494 | |
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495 if (holder instanceof HotSpotResolvedObjectTypeImpl) { |
14093 | 496 long[] info = new long[2]; |
497 long metaspaceKlass; | |
498 try { | |
499 metaspaceKlass = runtime().getCompilerToVM().resolveField(metaspaceConstantPool, index, (byte) opcode, info); | |
500 } catch (Throwable t) { | |
501 /* | |
502 * If there was an exception resolving the field we give up and return an unresolved | |
503 * field. | |
504 */ | |
505 return new HotSpotUnresolvedField(holder, name, type); | |
506 } | |
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507 HotSpotResolvedObjectTypeImpl resolvedHolder = HotSpotResolvedObjectTypeImpl.fromMetaspaceKlass(metaspaceKlass); |
14093 | 508 final int flags = (int) info[0]; |
509 final long offset = info[1]; | |
510 return resolvedHolder.createField(name, type, offset, flags); | |
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511 } else { |
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512 return new HotSpotUnresolvedField(holder, name, type); |
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513 } |
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514 } |
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515 |
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516 @Override |
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517 public void loadReferencedType(int cpi, int opcode) { |
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518 int index; |
14093 | 519 switch (opcode) { |
520 case Bytecodes.CHECKCAST: | |
521 case Bytecodes.INSTANCEOF: | |
522 case Bytecodes.NEW: | |
523 case Bytecodes.ANEWARRAY: | |
524 case Bytecodes.MULTIANEWARRAY: | |
525 case Bytecodes.LDC: | |
526 case Bytecodes.LDC_W: | |
527 case Bytecodes.LDC2_W: | |
528 index = cpi; | |
529 break; | |
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530 case Bytecodes.INVOKEDYNAMIC: |
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531 // invokedynamic instructions point to a constant pool cache entry. |
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532 index = decodeConstantPoolCacheIndex(cpi) + runtime().getConfig().constantPoolCpCacheIndexTag; |
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533 index = runtime().getCompilerToVM().constantPoolRemapInstructionOperandFromCache(metaspaceConstantPool, index); |
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534 break; |
14093 | 535 default: |
536 index = toConstantPoolIndex(cpi, opcode); | |
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537 index = runtime().getCompilerToVM().constantPoolRemapInstructionOperandFromCache(metaspaceConstantPool, index); |
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538 } |
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539 |
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540 JVM_CONSTANT tag = getTagAt(index); |
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541 if (tag == null) { |
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542 assert getTagAt(index - 1) == JVM_CONSTANT.Double || getTagAt(index - 1) == JVM_CONSTANT.Long; |
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543 return; |
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544 } |
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545 switch (tag) { |
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546 case Fieldref: |
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547 case MethodRef: |
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548 case InterfaceMethodref: |
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549 index = getUncachedKlassRefIndexAt(index); |
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550 tag = getTagAt(index); |
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551 assert tag == JVM_CONSTANT.Class || tag == JVM_CONSTANT.UnresolvedClass || tag == JVM_CONSTANT.UnresolvedClassInError : tag; |
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552 // fall through |
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553 case Class: |
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554 case UnresolvedClass: |
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555 case UnresolvedClassInError: |
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556 final long metaspaceKlass = runtime().getCompilerToVM().constantPoolKlassAt(metaspaceConstantPool, index); |
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557 HotSpotResolvedObjectTypeImpl type = HotSpotResolvedObjectTypeImpl.fromMetaspaceKlass(metaspaceKlass); |
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558 Class<?> klass = type.mirror(); |
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559 if (!klass.isPrimitive() && !klass.isArray()) { |
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560 unsafe.ensureClassInitialized(klass); |
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561 } |
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562 break; |
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563 case InvokeDynamic: |
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564 if (isInvokedynamicIndex(cpi)) { |
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565 runtime().getCompilerToVM().resolveInvokeDynamic(metaspaceConstantPool, cpi); |
15255
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566 } |
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567 break; |
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568 default: |
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569 // nothing |
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570 break; |
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571 } |
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572 } |
17394
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573 |
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574 @Override |
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575 public String toString() { |
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576 HotSpotResolvedObjectType holder = getHolder(); |
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577 return "HotSpotConstantPool<" + holder.toJavaName() + ">"; |
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578 } |
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579 } |