Mercurial > hg > graal-compiler
annotate graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/HotSpotCompiledCode.java @ 19739:6a3832494e24
Check for derived pointers before passing BytecodeFrame into HotSpot
author | Tom Rodriguez <tom.rodriguez@oracle.com> |
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date | Mon, 09 Mar 2015 13:07:18 -0700 |
parents | c2270ad35f57 |
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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; |
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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.graal.api.code.*; |
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31 import com.oracle.graal.api.code.CompilationResult.CodeAnnotation; |
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32 import com.oracle.graal.api.code.CompilationResult.CodeComment; |
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33 import com.oracle.graal.api.code.CompilationResult.DataPatch; |
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34 import com.oracle.graal.api.code.CompilationResult.ExceptionHandler; |
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35 import com.oracle.graal.api.code.CompilationResult.Infopoint; |
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36 import com.oracle.graal.api.code.CompilationResult.JumpTable; |
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37 import com.oracle.graal.api.code.CompilationResult.Mark; |
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38 import com.oracle.graal.api.code.CompilationResult.Site; |
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39 |
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40 /** |
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41 * A {@link CompilationResult} with additional HotSpot-specific information required for installing |
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42 * the code in HotSpot's code cache. |
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43 */ |
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44 public abstract class HotSpotCompiledCode extends CompilerObject { |
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45 |
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46 private static final long serialVersionUID = 7807321392203253218L; |
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47 public final CompilationResult comp; |
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48 |
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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 |
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53 public final byte[] dataSection; |
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54 public final int dataSectionAlignment; |
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55 public final DataPatch[] dataSectionPatches; |
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56 |
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57 public static class Comment { |
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58 |
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59 public final String text; |
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60 public final int pcOffset; |
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61 |
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62 public Comment(int pcOffset, String text) { |
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63 this.text = text; |
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64 this.pcOffset = pcOffset; |
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65 } |
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66 } |
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67 |
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68 public HotSpotCompiledCode(CompilationResult compResult) { |
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69 this.comp = compResult; |
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70 sites = getSortedSites(compResult); |
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71 if (compResult.getExceptionHandlers().isEmpty()) { |
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72 exceptionHandlers = null; |
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73 } else { |
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74 exceptionHandlers = compResult.getExceptionHandlers().toArray(new ExceptionHandler[compResult.getExceptionHandlers().size()]); |
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75 } |
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76 List<CodeAnnotation> annotations = compResult.getAnnotations(); |
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77 comments = new Comment[annotations.size()]; |
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78 if (!annotations.isEmpty()) { |
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79 for (int i = 0; i < comments.length; i++) { |
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80 CodeAnnotation annotation = annotations.get(i); |
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81 String text; |
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82 if (annotation instanceof CodeComment) { |
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83 CodeComment codeComment = (CodeComment) annotation; |
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84 text = codeComment.value; |
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85 } else if (annotation instanceof JumpTable) { |
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86 JumpTable jumpTable = (JumpTable) annotation; |
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87 text = "JumpTable [" + jumpTable.low + " .. " + jumpTable.high + "]"; |
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88 } else { |
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89 text = annotation.toString(); |
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90 } |
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91 comments[i] = new Comment(annotation.position, text); |
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92 } |
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93 } |
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94 assert validateFrames(); |
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95 |
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96 DataSection data = compResult.getDataSection(); |
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97 data.finalizeLayout(); |
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98 dataSection = new byte[data.getSectionSize()]; |
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99 |
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100 ByteBuffer buffer = ByteBuffer.wrap(dataSection).order(ByteOrder.nativeOrder()); |
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101 Builder<DataPatch> patchBuilder = Stream.builder(); |
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102 data.buildDataSection(buffer, patchBuilder); |
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103 |
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104 dataSectionAlignment = data.getSectionAlignment(); |
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105 dataSectionPatches = patchBuilder.build().toArray(len -> new DataPatch[len]); |
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106 } |
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107 |
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108 /** |
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109 * Ensure that all the frames passed into HotSpot are properly formatted with an empty or |
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110 * illegal slot following double word slots. |
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111 */ |
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112 private boolean validateFrames() { |
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113 for (Site site : sites) { |
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114 if (site instanceof Infopoint) { |
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115 Infopoint info = (Infopoint) site; |
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116 if (info.debugInfo != null) { |
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117 BytecodeFrame frame = info.debugInfo.frame(); |
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118 assert frame == null || frame.validateFormat(false); |
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119 } |
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120 } |
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121 } |
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122 return true; |
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123 } |
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124 |
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125 static class SiteComparator implements Comparator<Site> { |
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126 |
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127 public int compare(Site s1, Site s2) { |
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128 if (s1.pcOffset == s2.pcOffset && (s1 instanceof Mark ^ s2 instanceof Mark)) { |
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129 return s1 instanceof Mark ? -1 : 1; |
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130 } |
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131 return s1.pcOffset - s2.pcOffset; |
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132 } |
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133 } |
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134 |
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135 private static Site[] getSortedSites(CompilationResult target) { |
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136 List<?>[] lists = new List<?>[]{target.getInfopoints(), target.getDataPatches(), target.getMarks()}; |
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137 int count = 0; |
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138 for (List<?> list : lists) { |
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139 count += list.size(); |
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140 } |
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141 Site[] result = new Site[count]; |
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142 int pos = 0; |
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143 for (List<?> list : lists) { |
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144 for (Object elem : list) { |
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145 result[pos++] = (Site) elem; |
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146 } |
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147 } |
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148 Arrays.sort(result, new SiteComparator()); |
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149 return result; |
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150 } |
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151 } |