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annotate jvmci/jdk.vm.ci.hotspot/src/jdk/vm/ci/hotspot/HotSpotCompiledCode.java @ 24144:b0077339d77e

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use existence of <java.home>/lib/use-jvmci-compiler-by-default to override default value of UseJVMCICompiler
author Doug Simon <doug.simon@oracle.com>
date Thu, 15 Jun 2017 12:04:08 +0200
parents 9e1235406b59
children
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1 /*
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2 * Copyright (c) 2011, 2016, 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 jdk.vm.ci.hotspot;
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24
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25 import jdk.vm.ci.code.BytecodeFrame;
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26 import jdk.vm.ci.code.CompiledCode;
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27 import jdk.vm.ci.code.StackSlot;
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28 import jdk.vm.ci.code.site.DataPatch;
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29 import jdk.vm.ci.code.site.Infopoint;
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30 import jdk.vm.ci.code.site.Site;
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31 import jdk.vm.ci.meta.Assumptions.Assumption;
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32 import jdk.vm.ci.meta.ResolvedJavaMethod;
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34 /**
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35 * A {@link CompiledCode} with additional HotSpot-specific information required for installing the
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36 * code in HotSpot's code cache.
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37 */
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38 public class HotSpotCompiledCode implements CompiledCode {
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39
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40 /**
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41 * The name of this compilation unit.
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42 */
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43 protected final String name;
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44
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45 /**
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46 * The buffer containing the emitted machine code.
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47 */
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48 protected final byte[] targetCode;
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49
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50 /**
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51 * The leading number of bytes in {@link #targetCode} containing the emitted machine code.
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52 */
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53 protected final int targetCodeSize;
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54
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55 /**
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56 * A list of code annotations describing special sites in {@link #targetCode}.
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57 */
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58 protected final Site[] sites;
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59
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60 /**
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61 * A list of {@link Assumption} this code relies on.
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62 */
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63 protected final Assumption[] assumptions;
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64
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65 /**
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66 * The list of the methods whose bytecodes were used as input to the compilation. If
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67 * {@code null}, then the compilation did not record method dependencies. Otherwise, the first
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68 * element of this array is the root method of the compilation.
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69 */
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70 protected final ResolvedJavaMethod[] methods;
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71
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72 /**
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73 * A list of comments that will be included in code dumps.
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74 */
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75 protected final Comment[] comments;
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76
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77 /**
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78 * The data section containing serialized constants for the emitted machine code.
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79 */
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80 protected final byte[] dataSection;
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81
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82 /**
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83 * The minimum alignment of the data section.
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84 */
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85 protected final int dataSectionAlignment;
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86
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87 /**
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88 * A list of relocations in the {@link #dataSection}.
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89 */
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90 protected final DataPatch[] dataSectionPatches;
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91
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92 /**
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93 * A flag determining whether this code is immutable and position independent.
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94 */
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95 protected final boolean isImmutablePIC;
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96
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97 /**
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98 * The total size of the stack frame of this compiled method.
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99 */
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100 protected final int totalFrameSize;
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101
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102 /**
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103 * The deopt rescue slot. Must be non-null if there is a safepoint in the method.
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104 */
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105 protected final StackSlot deoptRescueSlot;
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106
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107 public static class Comment {
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108
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109 public final String text;
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110 public final int pcOffset;
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111
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112 public Comment(int pcOffset, String text) {
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113 this.text = text;
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114 this.pcOffset = pcOffset;
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115 }
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116 }
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117
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118 @SuppressFBWarnings(value = "EI_EXPOSE_REP2", justification = "caller transfers ownership of `sites`, `targetCode`, `comments`, `methods`, `dataSection`, `dataSectionPatches` and `assumptions`")
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119 public HotSpotCompiledCode(String name, byte[] targetCode, int targetCodeSize, Site[] sites, Assumption[] assumptions, ResolvedJavaMethod[] methods, Comment[] comments, byte[] dataSection,
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120 int dataSectionAlignment, DataPatch[] dataSectionPatches, boolean isImmutablePIC, int totalFrameSize, StackSlot deoptRescueSlot) {
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121 this.name = name;
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122 this.targetCode = targetCode;
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123 this.targetCodeSize = targetCodeSize;
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124 this.sites = sites;
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125 this.assumptions = assumptions;
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126 this.methods = methods;
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127
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128 this.comments = comments;
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129 this.dataSection = dataSection;
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130 this.dataSectionAlignment = dataSectionAlignment;
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131 this.dataSectionPatches = dataSectionPatches;
22781
5d06abd6d35b Backport isImmutablePIC field from jvmci-9, and add documentation.
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132 this.isImmutablePIC = isImmutablePIC;
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133 this.totalFrameSize = totalFrameSize;
23299
805d58f2cd8c Use explicit StackSlot instead of int offset for the deopt rescue slot.
Roland Schatz <roland.schatz@oracle.com>
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134 this.deoptRescueSlot = deoptRescueSlot;
22780
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135
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136 assert validateFrames();
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137 }
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138
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139 public String getName() {
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140 return name;
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141 }
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142
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143 @Override
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144 public String toString() {
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145 return name;
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146 }
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147
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148 /**
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149 * Ensure that all the frames passed into the VM are properly formatted with an empty or illegal
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150 * slot following double word slots.
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151 */
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152 private boolean validateFrames() {
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153 for (Site site : sites) {
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154 if (site instanceof Infopoint) {
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155 Infopoint info = (Infopoint) site;
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156 if (info.debugInfo != null) {
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157 BytecodeFrame frame = info.debugInfo.frame();
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158 assert frame == null || frame.validateFormat();
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159 }
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160 }
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161 }
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162 return true;
22625
545590b1ab83 expanded CodeCacheProvider so that it supports all forms of code installation and made CompilerToVM.installCode package-private
Doug Simon <doug.simon@oracle.com>
parents: 22569
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163 }
3733
e233f5660da4 Added Java files from Maxine project.
Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
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164 }