Mercurial > hg > truffle
annotate graal/com.oracle.jvmci.code/src/com/oracle/jvmci/code/DebugInfo.java @ 21607:71b338926f2e
moved JVMCI classes into their own distributions (JBS:GRAAL-53)
author | Doug Simon <doug.simon@oracle.com> |
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date | Fri, 29 May 2015 22:27:38 +0200 |
parents | f5b549811bac |
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1 /* |
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2 * Copyright (c) 2009, 2011, 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.code; |
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24 |
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25 import com.oracle.jvmci.meta.Value; |
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26 import java.util.*; |
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27 |
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28 /** |
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29 * Represents the debugging information for a particular point of execution. This information |
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30 * includes: |
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31 * <ul> |
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32 * <li>a {@linkplain #getBytecodePosition() bytecode position}</li> |
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33 * <li>a reference map for registers and stack slots in the current frame</li> |
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34 * <li>a map from bytecode locals and operand stack slots to their values or locations from which |
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35 * their values can be read</li> |
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36 * <li>a map from the registers (in the caller's frame) to the slots where they are saved in the |
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37 * current frame</li> |
14906 | 38 * </ul> |
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39 */ |
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40 public final class DebugInfo { |
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41 |
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42 private final BytecodePosition bytecodePosition; |
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43 private final ReferenceMap referenceMap; |
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44 @SuppressWarnings("unused") private final Value[] virtualObjectMapping; |
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45 private RegisterSaveLayout calleeSaveInfo; |
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46 |
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47 /** |
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48 * Creates a new {@link DebugInfo} from the given values. |
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50 * @param codePos the {@linkplain BytecodePosition code position} or {@linkplain BytecodeFrame |
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51 * frame} info |
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52 * @param referenceMap the reference map |
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53 * @param virtualObjectMapping the mapping of {@link VirtualObject}s to their real values |
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54 */ |
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55 public DebugInfo(BytecodePosition codePos, ReferenceMap referenceMap, Value[] virtualObjectMapping) { |
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56 this.bytecodePosition = codePos; |
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57 this.referenceMap = referenceMap; |
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58 this.virtualObjectMapping = virtualObjectMapping; |
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59 } |
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60 |
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61 public DebugInfo(BytecodePosition codePos) { |
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62 this(codePos, null, null); |
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63 } |
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64 |
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65 /** |
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66 * @return {@code true} if this debug information has a frame |
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67 */ |
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68 public boolean hasFrame() { |
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69 return getBytecodePosition() instanceof BytecodeFrame; |
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70 } |
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71 |
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72 /** |
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73 * Gets the deoptimization information for each inlined frame (if available). |
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75 * @return {@code null} if no frame de-opt info is {@linkplain #hasFrame() available} |
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76 */ |
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77 public BytecodeFrame frame() { |
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78 if (hasFrame()) { |
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79 return (BytecodeFrame) getBytecodePosition(); |
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80 } |
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81 return null; |
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82 } |
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83 |
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84 @Override |
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85 public String toString() { |
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86 return CodeUtil.append(new StringBuilder(100), this, null).toString(); |
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87 } |
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88 |
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89 /** |
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90 * @return The code position (including all inlined methods) of this debug info. If this is a |
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91 * {@link BytecodeFrame} instance, then it is also the deoptimization information for |
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92 * each inlined frame. |
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93 */ |
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94 public BytecodePosition getBytecodePosition() { |
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95 return bytecodePosition; |
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96 } |
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97 |
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98 public ReferenceMap getReferenceMap() { |
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99 return referenceMap; |
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100 } |
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101 |
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102 /** |
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103 * Sets the map from the registers (in the caller's frame) to the slots where they are saved in |
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104 * the current frame. |
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105 */ |
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106 public void setCalleeSaveInfo(RegisterSaveLayout calleeSaveInfo) { |
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107 this.calleeSaveInfo = calleeSaveInfo; |
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108 } |
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109 |
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110 /** |
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111 * Gets the map from the registers (in the caller's frame) to the slots where they are saved in |
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112 * the current frame. If no such information is available, {@code null} is returned. |
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113 */ |
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114 public RegisterSaveLayout getCalleeSaveInfo() { |
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115 return calleeSaveInfo; |
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116 } |
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117 |
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118 @Override |
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119 public int hashCode() { |
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120 throw new UnsupportedOperationException("hashCode"); |
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121 } |
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122 |
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123 @Override |
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124 public boolean equals(Object obj) { |
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125 if (this == obj) { |
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126 return true; |
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127 } |
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128 if (obj instanceof DebugInfo) { |
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129 DebugInfo that = (DebugInfo) obj; |
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130 if (Objects.equals(this.bytecodePosition, that.bytecodePosition) && Objects.equals(this.calleeSaveInfo, that.calleeSaveInfo) && Objects.equals(this.referenceMap, that.referenceMap)) { |
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131 return true; |
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132 } |
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133 } |
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134 return false; |
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135 } |
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136 } |