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annotate graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/stubs/RuntimeCallStub.java @ 9735:2e4f035186cf

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rename: Descriptor -> ForeignCallDescriptor
author Doug Simon <doug.simon@oracle.com>
date Thu, 16 May 2013 16:01:40 +0200
parents f7bd4594cbbf
children 951d5ebf3c49
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1 /*
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2 * Copyright (c) 2012, 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.stubs;
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24
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25 import static com.oracle.graal.api.code.CallingConvention.Type.*;
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26 import static com.oracle.graal.api.meta.MetaUtil.*;
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27 import static com.oracle.graal.hotspot.HotSpotGraalRuntime.*;
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28 import static com.oracle.graal.hotspot.HotSpotRuntimeCallTarget.RegisterEffect.*;
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29 import static com.oracle.graal.hotspot.HotSpotRuntimeCallTarget.Transition.*;
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30
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31 import java.lang.reflect.*;
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32
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33 import com.oracle.graal.api.code.*;
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34 import com.oracle.graal.api.code.RuntimeCallTarget.ForeignCallDescriptor;
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35 import com.oracle.graal.api.meta.*;
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36 import com.oracle.graal.debug.*;
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37 import com.oracle.graal.hotspot.*;
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38 import com.oracle.graal.hotspot.meta.*;
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39 import com.oracle.graal.hotspot.nodes.*;
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40 import com.oracle.graal.hotspot.replacements.*;
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41 import com.oracle.graal.nodes.*;
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42 import com.oracle.graal.nodes.calc.*;
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43 import com.oracle.graal.nodes.java.*;
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44 import com.oracle.graal.nodes.java.MethodCallTargetNode.InvokeKind;
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45 import com.oracle.graal.nodes.spi.*;
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46 import com.oracle.graal.nodes.type.*;
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47 import com.oracle.graal.phases.common.*;
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48 import com.oracle.graal.replacements.*;
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49 import com.oracle.graal.replacements.nodes.*;
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50 import com.oracle.graal.word.*;
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51 import com.oracle.graal.word.phases.*;
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52
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53 /**
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54 * A stub that calls into a HotSpot C/C++ runtime function using the native
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55 * {@link CallingConvention}.
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56 */
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57 public class RuntimeCallStub extends Stub {
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58
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59 /**
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60 * The target of the call.
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61 */
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62 private final HotSpotRuntimeCallTarget target;
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63
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64 /**
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65 * Specifies if the JavaThread value for the current thread is to be prepended to the arguments
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66 * for the call to {@link #target}.
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67 */
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68 protected final boolean prependThread;
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69
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70 /**
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71 * Creates a stub for a call to code at a given address.
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72 *
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73 * @param address the address of the code to call
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74 * @param sig the signature of the call to this stub
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75 * @param prependThread true if the JavaThread value for the current thread is to be prepended
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76 * to the arguments for the call to {@code address}
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77 */
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78 public RuntimeCallStub(long address, ForeignCallDescriptor sig, boolean prependThread, HotSpotRuntime runtime, Replacements replacements) {
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79 super(runtime, replacements, HotSpotRuntimeCallTarget.create(sig, 0L, PRESERVES_REGISTERS, JavaCallee, NOT_LEAF));
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80 this.prependThread = prependThread;
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81 Class[] targetParameterTypes = createTargetParameters(sig);
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82 ForeignCallDescriptor targetSig = new ForeignCallDescriptor(sig.getName() + ":C", sig.hasSideEffect(), sig.getResultType(), targetParameterTypes);
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83 target = HotSpotRuntimeCallTarget.create(targetSig, address, DESTROYS_REGISTERS, NativeCall, NOT_LEAF);
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84 }
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85
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86 /**
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87 * Gets the linkage information for the runtime call.
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88 */
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89 public HotSpotRuntimeCallTarget getTargetLinkage() {
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90 return target;
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91 }
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92
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93 private Class[] createTargetParameters(ForeignCallDescriptor sig) {
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94 Class[] parameters = sig.getArgumentTypes();
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95 if (prependThread) {
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96 Class[] newParameters = new Class[parameters.length + 1];
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97 System.arraycopy(parameters, 0, newParameters, 1, parameters.length);
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98 newParameters[0] = Word.class;
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99 return newParameters;
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100 }
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101 return parameters;
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102 }
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103
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104 @Override
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105 protected ResolvedJavaMethod getInstalledCodeOwner() {
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106 return null;
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107 }
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108
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109 @Override
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110 protected Object debugScopeContext() {
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111 return new JavaMethod() {
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112
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113 public Signature getSignature() {
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114 ForeignCallDescriptor d = linkage.getDescriptor();
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115 Class<?>[] arguments = d.getArgumentTypes();
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116 JavaType[] parameters = new JavaType[arguments.length];
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117 for (int i = 0; i < arguments.length; i++) {
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118 parameters[i] = runtime.lookupJavaType(arguments[i]);
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119 }
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120 return new HotSpotSignature(runtime.lookupJavaType(d.getResultType()), parameters);
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121 }
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122
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123 public String getName() {
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124 return linkage.getDescriptor().getName();
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125 }
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126
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127 public JavaType getDeclaringClass() {
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128 return runtime.lookupJavaType(RuntimeCallStub.class);
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129 }
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130
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131 @Override
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132 public String toString() {
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133 return format("HotSpotStub<%n(%p)>", this);
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134 }
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135 };
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136 }
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137
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138 static class GraphBuilder {
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139
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140 public GraphBuilder(Stub stub) {
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141 this.graph = new StructuredGraph(stub.toString(), null);
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142 graph.replaceFixed(graph.start(), graph.add(new StubStartNode(stub)));
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143 this.lastFixedNode = graph.start();
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144 }
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145
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146 final StructuredGraph graph;
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147 private FixedWithNextNode lastFixedNode;
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148
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149 <T extends FloatingNode> T add(T node) {
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150 return graph.unique(node);
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151 }
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152
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153 <T extends FixedNode> T append(T node) {
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154 T result = graph.add(node);
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155 assert lastFixedNode != null;
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156 assert result.predecessor() == null;
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157 graph.addAfterFixed(lastFixedNode, result);
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158 if (result instanceof FixedWithNextNode) {
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159 lastFixedNode = (FixedWithNextNode) result;
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160 } else {
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161 lastFixedNode = null;
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162 }
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163 return result;
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164 }
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165 }
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166
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167 @Override
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168 protected StructuredGraph getGraph() {
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169 Class<?>[] args = linkage.getDescriptor().getArgumentTypes();
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170 boolean isObjectResult = linkage.getCallingConvention().getReturn().getKind() == Kind.Object;
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171 GraphBuilder builder = new GraphBuilder(this);
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172 LocalNode[] locals = createLocals(builder, args);
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173
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174 ReadRegisterNode thread = prependThread || isObjectResult ? builder.append(new ReadRegisterNode(runtime.threadRegister(), true, false)) : null;
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175 ValueNode result = createTargetCall(builder, locals, thread);
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176 createInvoke(builder, StubUtil.class, "handlePendingException", ConstantNode.forBoolean(isObjectResult, builder.graph));
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177 if (isObjectResult) {
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178 InvokeNode object = createInvoke(builder, HotSpotReplacementsUtil.class, "getAndClearObjectResult", thread);
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179 result = createInvoke(builder, StubUtil.class, "verifyObject", object);
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180 }
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181 builder.append(new ReturnNode(linkage.getDescriptor().getResultType() == void.class ? null : result));
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182
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183 if (Debug.isDumpEnabled()) {
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184 Debug.dump(builder.graph, "Initial stub graph");
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185 }
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186
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187 for (InvokeNode invoke : builder.graph.getNodes(InvokeNode.class).snapshot()) {
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188 inline(invoke);
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189 }
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190 assert builder.graph.getNodes(InvokeNode.class).isEmpty();
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191
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192 if (Debug.isDumpEnabled()) {
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193 Debug.dump(builder.graph, "Stub graph before compilation");
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194 }
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195
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196 return builder.graph;
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197 }
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198
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199 private LocalNode[] createLocals(GraphBuilder builder, Class<?>[] args) {
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200 LocalNode[] locals = new LocalNode[args.length];
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201 ResolvedJavaType accessingClass = runtime.lookupJavaType(getClass());
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202 for (int i = 0; i < args.length; i++) {
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203 ResolvedJavaType type = runtime.lookupJavaType(args[i]).resolve(accessingClass);
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204 Kind kind = type.getKind().getStackKind();
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205 Stamp stamp;
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206 if (kind == Kind.Object) {
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207 stamp = StampFactory.declared(type);
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208 } else {
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209 stamp = StampFactory.forKind(kind);
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210 }
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211 LocalNode local = builder.add(new LocalNode(i, stamp));
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212 locals[i] = local;
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213 }
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214 return locals;
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215 }
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216
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217 private InvokeNode createInvoke(GraphBuilder builder, Class<?> declaringClass, String name, ValueNode... hpeArgs) {
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218 ResolvedJavaMethod method = null;
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219 for (Method m : declaringClass.getDeclaredMethods()) {
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220 if (Modifier.isStatic(m.getModifiers()) && m.getName().equals(name)) {
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221 assert method == null : "found more than one method in " + declaringClass + " named " + name;
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222 method = runtime.lookupJavaMethod(m);
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223 }
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224 }
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225 assert method != null : "did not find method in " + declaringClass + " named " + name;
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226 JavaType returnType = method.getSignature().getReturnType(null);
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227 MethodCallTargetNode callTarget = builder.graph.add(new MethodCallTargetNode(InvokeKind.Static, method, hpeArgs, returnType));
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228 InvokeNode invoke = builder.append(new InvokeNode(callTarget, FrameState.UNKNOWN_BCI));
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229 return invoke;
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230 }
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231
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232 private CRuntimeCall createTargetCall(GraphBuilder builder, LocalNode[] locals, ReadRegisterNode thread) {
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233 if (prependThread) {
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234 ValueNode[] targetArguments = new ValueNode[1 + locals.length];
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235 targetArguments[0] = thread;
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diff changeset
236 System.arraycopy(locals, 0, targetArguments, 1, locals.length);
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237 return builder.append(new CRuntimeCall(target.getDescriptor(), targetArguments));
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238 } else {
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239 return builder.append(new CRuntimeCall(target.getDescriptor(), locals));
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240 }
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241 }
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242
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243 private void inline(InvokeNode invoke) {
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244 StructuredGraph graph = invoke.graph();
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diff changeset
245 ResolvedJavaMethod method = ((MethodCallTargetNode) invoke.callTarget()).targetMethod();
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246 ReplacementsImpl repl = new ReplacementsImpl(runtime, new Assumptions(false), runtime.getTarget());
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247 StructuredGraph calleeGraph = repl.makeGraph(method, null, null);
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248 InliningUtil.inline(invoke, calleeGraph, false);
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249 new NodeIntrinsificationPhase(runtime).apply(graph);
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250 new WordTypeRewriterPhase(runtime, wordKind()).apply(graph);
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diff changeset
251 new DeadCodeEliminationPhase().apply(graph);
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252 }
0a771345825b added RuntimeCallStub for runtime calls that require no extra/special logic in the stub itself
Doug Simon <doug.simon@oracle.com>
parents:
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253 }