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annotate graal/com.oracle.jvmci.hotspot/src/com/oracle/jvmci/hotspot/HotSpotCompiledCode.java @ 21561:ce2113326bc8

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Merge.
author Doug Simon <doug.simon@oracle.com>
date Thu, 28 May 2015 17:13:22 +0200
parents graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/HotSpotCompiledCode.java@5cbaf1e9ff2e graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/HotSpotCompiledCode.java@48c1ebd24120
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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.jvmci.hotspot;
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24
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25 import java.nio.*;
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26 import java.util.*;
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27 import java.util.stream.*;
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28 import java.util.stream.Stream.Builder;
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29
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30 import com.oracle.jvmci.code.*;
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31 import com.oracle.jvmci.code.CompilationResult.CodeAnnotation;
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32 import com.oracle.jvmci.code.CompilationResult.CodeComment;
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33 import com.oracle.jvmci.code.CompilationResult.DataPatch;
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34 import com.oracle.jvmci.code.CompilationResult.ExceptionHandler;
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35 import com.oracle.jvmci.code.CompilationResult.Infopoint;
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36 import com.oracle.jvmci.code.CompilationResult.JumpTable;
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37 import com.oracle.jvmci.code.CompilationResult.Mark;
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38 import com.oracle.jvmci.code.CompilationResult.Site;
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39 import com.oracle.jvmci.meta.Assumptions.Assumption;
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40 import com.oracle.jvmci.meta.*;
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41
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42 /**
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43 * A {@link CompilationResult} with additional HotSpot-specific information required for installing
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44 * the code in HotSpot's code cache.
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45 */
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46 public abstract class HotSpotCompiledCode {
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47
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48 public final String name;
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49 public final Site[] sites;
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50 public final ExceptionHandler[] exceptionHandlers;
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51 public final Comment[] comments;
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52 public final Assumption[] assumptions;
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53
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54 public final byte[] targetCode;
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55 public final int targetCodeSize;
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56
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57 public final byte[] dataSection;
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58 public final int dataSectionAlignment;
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59 public final DataPatch[] dataSectionPatches;
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60
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61 public final int totalFrameSize;
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62 public final int customStackAreaOffset;
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63
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64 /**
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65 * The list of the methods whose bytecodes were used as input to the compilation. If
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66 * {@code null}, then the compilation did not record method dependencies. Otherwise, the first
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67 * element of this array is the root method of the compilation.
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68 */
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69 public final ResolvedJavaMethod[] methods;
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70
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71 public static class Comment {
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72
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73 public final String text;
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74 public final int pcOffset;
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75
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76 public Comment(int pcOffset, String text) {
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77 this.text = text;
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78 this.pcOffset = pcOffset;
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79 }
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80 }
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81
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82 public HotSpotCompiledCode(CompilationResult compResult) {
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83 name = compResult.getName();
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84 sites = getSortedSites(compResult);
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85 if (compResult.getExceptionHandlers().isEmpty()) {
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86 exceptionHandlers = null;
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87 } else {
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88 exceptionHandlers = compResult.getExceptionHandlers().toArray(new ExceptionHandler[compResult.getExceptionHandlers().size()]);
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89 }
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90 List<CodeAnnotation> annotations = compResult.getAnnotations();
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91 comments = new Comment[annotations.size()];
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92 if (!annotations.isEmpty()) {
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93 for (int i = 0; i < comments.length; i++) {
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94 CodeAnnotation annotation = annotations.get(i);
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95 String text;
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96 if (annotation instanceof CodeComment) {
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97 CodeComment codeComment = (CodeComment) annotation;
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98 text = codeComment.value;
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99 } else if (annotation instanceof JumpTable) {
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100 JumpTable jumpTable = (JumpTable) annotation;
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101 text = "JumpTable [" + jumpTable.low + " .. " + jumpTable.high + "]";
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102 } else {
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103 text = annotation.toString();
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104 }
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105 comments[i] = new Comment(annotation.position, text);
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106 }
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107 }
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108 assumptions = compResult.getAssumptions();
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109 assert validateFrames();
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110
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111 targetCode = compResult.getTargetCode();
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112 targetCodeSize = compResult.getTargetCodeSize();
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113
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114 DataSection data = compResult.getDataSection();
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115 data.finalizeLayout();
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116 dataSection = new byte[data.getSectionSize()];
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117
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118 ByteBuffer buffer = ByteBuffer.wrap(dataSection).order(ByteOrder.nativeOrder());
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119 Builder<DataPatch> patchBuilder = Stream.builder();
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120 data.buildDataSection(buffer, patchBuilder);
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121
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122 dataSectionAlignment = data.getSectionAlignment();
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123 dataSectionPatches = patchBuilder.build().toArray(len -> new DataPatch[len]);
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124
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125 totalFrameSize = compResult.getTotalFrameSize();
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126 customStackAreaOffset = compResult.getCustomStackAreaOffset();
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127
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128 methods = compResult.getMethods();
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129 }
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130
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131 /**
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132 * Ensure that all the frames passed into HotSpot are properly formatted with an empty or
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133 * illegal slot following double word slots.
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134 */
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135 private boolean validateFrames() {
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136 for (Site site : sites) {
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137 if (site instanceof Infopoint) {
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138 Infopoint info = (Infopoint) site;
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139 if (info.debugInfo != null) {
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140 BytecodeFrame frame = info.debugInfo.frame();
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141 assert frame == null || frame.validateFormat(false);
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142 }
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143 }
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144 }
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145 return true;
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146 }
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147
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148 static class SiteComparator implements Comparator<Site> {
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149
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150 public int compare(Site s1, Site s2) {
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151 if (s1.pcOffset == s2.pcOffset && (s1 instanceof Mark ^ s2 instanceof Mark)) {
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152 return s1 instanceof Mark ? -1 : 1;
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153 }
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154 return s1.pcOffset - s2.pcOffset;
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155 }
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156 }
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157
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158 private static Site[] getSortedSites(CompilationResult target) {
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159 List<?>[] lists = new List<?>[]{target.getInfopoints(), target.getDataPatches(), target.getMarks()};
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160 int count = 0;
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161 for (List<?> list : lists) {
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162 count += list.size();
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163 }
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164 Site[] result = new Site[count];
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165 int pos = 0;
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166 for (List<?> list : lists) {
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167 for (Object elem : list) {
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168 result[pos++] = (Site) elem;
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169 }
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170 }
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171 Arrays.sort(result, new SiteComparator());
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172 return result;
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173 }
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174 }