Mercurial > hg > truffle
annotate graal/com.oracle.max.cri/src/com/sun/cri/ci/CiTargetMethod.java @ 3733:e233f5660da4
Added Java files from Maxine project.
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Sat, 17 Dec 2011 19:59:18 +0100 |
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children | bc8527f3071c |
rev | line source |
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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.sun.cri.ci; |
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24 |
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25 import java.io.*; |
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26 import java.util.*; |
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27 |
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28 import com.sun.cri.ri.*; |
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29 |
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30 /** |
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31 * Represents the output from compiling a method, including the compiled machine code, associated data and references, |
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32 * relocation information, deoptimization information, etc. It is the essential component of a {@link CiResult}, which also includes |
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33 * {@linkplain CiStatistics compilation statistics} and {@linkplain CiBailout failure information}. |
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34 */ |
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35 public class CiTargetMethod implements Serializable { |
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36 |
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37 /** |
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38 * Represents a code position with associated additional information. |
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39 */ |
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40 public abstract static class Site implements Serializable { |
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41 /** |
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42 * The position (or offset) of this site with respect to the start of the target method. |
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43 */ |
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44 public final int pcOffset; |
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45 |
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46 public Site(int pos) { |
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47 this.pcOffset = pos; |
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48 } |
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49 } |
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50 |
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51 /** |
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52 * Represents a safepoint with associated debug info. |
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53 */ |
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54 public static class Safepoint extends Site implements Comparable<Safepoint> { |
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55 public final CiDebugInfo debugInfo; |
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56 |
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57 Safepoint(int pcOffset, CiDebugInfo debugInfo) { |
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58 super(pcOffset); |
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59 this.debugInfo = debugInfo; |
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60 } |
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61 |
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62 @Override |
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63 public String toString() { |
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64 StringBuilder sb = new StringBuilder(); |
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65 sb.append(pcOffset); |
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66 sb.append("[<safepoint>]"); |
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67 appendDebugInfo(sb, debugInfo); |
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68 return sb.toString(); |
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69 } |
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70 |
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71 @Override |
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72 public int compareTo(Safepoint o) { |
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73 if (pcOffset < o.pcOffset) { |
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74 return -1; |
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75 } else if (pcOffset > o.pcOffset) { |
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76 return 1; |
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77 } |
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78 return 0; |
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79 } |
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80 } |
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81 |
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82 /** |
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83 * Represents a call in the code. |
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84 */ |
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85 public static final class Call extends Safepoint { |
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86 /** |
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87 * The target of the call. |
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88 */ |
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89 public final Object target; |
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90 |
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91 /** |
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92 * The size of the call instruction. |
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93 */ |
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94 public final int size; |
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95 |
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96 /** |
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97 * Specifies if this call is direct or indirect. A direct call has an immediate operand encoding |
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98 * the absolute or relative (to the call itself) address of the target. An indirect call has a |
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99 * register or memory operand specifying the target address of the call. |
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100 */ |
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101 public final boolean direct; |
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102 |
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103 Call(Object target, int pcOffset, int size, boolean direct, CiDebugInfo debugInfo) { |
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104 super(pcOffset, debugInfo); |
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105 this.size = size; |
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106 this.target = target; |
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107 this.direct = direct; |
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108 } |
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109 |
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110 @Override |
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111 public String toString() { |
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112 StringBuilder sb = new StringBuilder(); |
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113 sb.append(pcOffset); |
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114 sb.append('['); |
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115 sb.append(target); |
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116 sb.append(']'); |
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117 |
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118 if (debugInfo != null) { |
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119 appendDebugInfo(sb, debugInfo); |
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120 } |
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121 |
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122 return sb.toString(); |
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123 } |
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124 } |
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125 |
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126 /** |
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127 * Represents a reference to data from the code. The associated data can be any constant. |
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128 */ |
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129 public static final class DataPatch extends Site { |
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130 public final CiConstant constant; |
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131 public final int alignment; |
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132 |
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133 DataPatch(int pcOffset, CiConstant data, int alignment) { |
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134 super(pcOffset); |
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135 this.constant = data; |
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136 this.alignment = alignment; |
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137 } |
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138 |
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139 @Override |
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140 public String toString() { |
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141 return String.format("%d[<data patch referring to data %s>]", pcOffset, constant); |
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142 } |
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143 } |
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144 |
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145 /** |
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146 * Provides extra information about instructions or data at specific positions in {@link CiTargetMethod#targetCode()}. |
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147 * This is optional information that can be used to enhance a disassembly of the code. |
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148 */ |
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149 public abstract static class CodeAnnotation implements Serializable { |
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150 public final int position; |
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151 |
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152 public CodeAnnotation(int position) { |
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153 this.position = position; |
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154 } |
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155 } |
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156 |
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157 /** |
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158 * A string comment about one or more instructions at a specific position in the code. |
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159 */ |
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160 public static final class CodeComment extends CodeAnnotation { |
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161 public final String value; |
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162 public CodeComment(int position, String comment) { |
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163 super(position); |
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164 this.value = comment; |
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165 } |
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166 |
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167 @Override |
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168 public String toString() { |
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169 return getClass().getSimpleName() + "@" + position + ": " + value; |
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170 } |
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171 } |
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172 |
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173 /** |
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174 * Labels some inline data in the code. |
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175 */ |
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176 public static final class InlineData extends CodeAnnotation { |
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177 public final int size; |
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178 public InlineData(int position, int size) { |
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179 super(position); |
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180 this.size = size; |
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181 } |
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182 |
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183 @Override |
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184 public String toString() { |
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185 return getClass().getSimpleName() + "@" + position + ": size=" + size; |
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186 } |
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187 } |
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188 |
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189 /** |
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190 * Describes a table of signed offsets embedded in the code. The offsets are relative to the starting |
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191 * address of the table. This type of table maybe generated when translating a multi-way branch |
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192 * based on a key value from a dense value set (e.g. the {@code tableswitch} JVM instruction). |
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193 * |
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194 * The table is indexed by the contiguous range of integers from {@link #low} to {@link #high} inclusive. |
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195 */ |
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196 public static final class JumpTable extends CodeAnnotation { |
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197 /** |
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198 * The low value in the key range (inclusive). |
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199 */ |
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200 public final int low; |
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201 |
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202 /** |
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203 * The high value in the key range (inclusive). |
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204 */ |
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205 public final int high; |
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206 |
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207 /** |
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208 * The size (in bytes) of each table entry. |
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209 */ |
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210 public final int entrySize; |
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211 |
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212 public JumpTable(int position, int low, int high, int entrySize) { |
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213 super(position); |
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214 this.low = low; |
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215 this.high = high; |
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216 this.entrySize = entrySize; |
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217 } |
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218 |
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219 @Override |
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220 public String toString() { |
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221 return getClass().getSimpleName() + "@" + position + ": [" + low + " .. " + high + "]"; |
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222 } |
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223 } |
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224 |
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225 /** |
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226 * Describes a table of key and offset pairs. The offset in each table entry is relative to the address of |
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227 * the table. This type of table maybe generated when translating a multi-way branch |
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228 * based on a key value from a sparse value set (e.g. the {@code lookupswitch} JVM instruction). |
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229 */ |
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230 public static final class LookupTable extends CodeAnnotation { |
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231 /** |
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232 * The number of entries in the table. |
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233 */ |
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234 public final int npairs; |
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235 |
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236 /** |
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237 * The size (in bytes) of entry's key. |
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238 */ |
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239 public final int keySize; |
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240 |
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241 /** |
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242 * The size (in bytes) of entry's offset value. |
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243 */ |
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244 public final int offsetSize; |
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245 |
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246 public LookupTable(int position, int npairs, int keySize, int offsetSize) { |
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247 super(position); |
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248 this.npairs = npairs; |
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249 this.keySize = keySize; |
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250 this.offsetSize = offsetSize; |
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251 } |
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252 |
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253 @Override |
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254 public String toString() { |
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255 return getClass().getSimpleName() + "@" + position + ": [npairs=" + npairs + ", keySize=" + keySize + ", offsetSize=" + offsetSize + "]"; |
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256 } |
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257 } |
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258 |
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259 /** |
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260 * Represents exception handler information for a specific code position. It includes the catch code position as |
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261 * well as the caught exception type. |
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262 */ |
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263 public static final class ExceptionHandler extends Site { |
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264 public final int bci; |
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265 public final int scopeLevel; |
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266 public final int handlerPos; |
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267 public final int handlerBci; |
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268 public final RiType exceptionType; |
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269 |
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270 ExceptionHandler(int pcOffset, int bci, int scopeLevel, int handlerPos, int handlerBci, RiType exceptionType) { |
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271 super(pcOffset); |
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272 this.bci = bci; |
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273 this.scopeLevel = scopeLevel; |
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274 this.handlerPos = handlerPos; |
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275 this.handlerBci = handlerBci; |
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276 this.exceptionType = exceptionType; |
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277 } |
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278 |
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279 @Override |
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280 public String toString() { |
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281 return String.format("%d[<exception edge to %d with type %s>]", pcOffset, handlerPos, (exceptionType == null) ? "null" : exceptionType); |
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282 } |
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283 } |
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284 |
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285 public static final class Mark extends Site { |
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286 public final Object id; |
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287 public final Mark[] references; |
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288 |
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289 Mark(int pcOffset, Object id, Mark[] references) { |
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290 super(pcOffset); |
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291 this.id = id; |
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292 this.references = references; |
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293 } |
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294 |
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295 @Override |
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296 public String toString() { |
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297 if (id == null) { |
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298 return String.format("%d[<mark with %d references>]", pcOffset, references.length); |
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299 } else if (id instanceof Integer) { |
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300 return String.format("%d[<mark with %d references and id %s>]", pcOffset, references.length, Integer.toHexString((Integer) id)); |
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301 } else { |
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302 return String.format("%d[<mark with %d references and id %s>]", pcOffset, references.length, id.toString()); |
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303 } |
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304 } |
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305 } |
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306 |
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307 /** |
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308 * List of safepoints, sorted by {@link Site#pcOffset}. |
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309 */ |
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310 public final List<Safepoint> safepoints = new ArrayList<Safepoint>(); |
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311 |
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312 /** |
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313 * List of data references. |
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314 */ |
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315 public final List<DataPatch> dataReferences = new ArrayList<DataPatch>(); |
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316 |
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317 /** |
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318 * List of exception handlers. |
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319 */ |
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320 public final List<ExceptionHandler> exceptionHandlers = new ArrayList<ExceptionHandler>(); |
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321 |
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322 /** |
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323 * List of marks. |
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324 */ |
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325 public final List<Mark> marks = new ArrayList<Mark>(); |
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326 |
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327 private int frameSize = -1; |
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328 private int customStackAreaOffset = -1; |
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329 private int registerRestoreEpilogueOffset = -1; |
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330 private int deoptReturnAddressOffset; |
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331 |
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332 /** |
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333 * The buffer containing the emitted machine code. |
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334 */ |
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335 private byte[] targetCode; |
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336 |
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337 /** |
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338 * The leading number of bytes in {@link #targetCode} containing the emitted machine code. |
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339 */ |
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340 private int targetCodeSize; |
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341 |
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342 private ArrayList<CodeAnnotation> annotations; |
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343 |
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344 private CiAssumptions assumptions; |
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345 |
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346 /** |
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347 * Constructs a new target method. |
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348 */ |
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349 public CiTargetMethod() { |
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350 } |
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351 |
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352 public void setAssumptions(CiAssumptions assumptions) { |
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353 this.assumptions = assumptions; |
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354 } |
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355 |
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356 public CiAssumptions assumptions() { |
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357 return assumptions; |
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358 } |
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359 |
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360 /** |
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361 * Sets the frame size in bytes. Does not include the return address pushed onto the |
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362 * stack, if any. |
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363 * |
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364 * @param size the size of the frame in bytes |
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365 */ |
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366 public void setFrameSize(int size) { |
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367 frameSize = size; |
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|
368 } |
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369 |
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|
370 /** |
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|
371 * Sets the machine that has been generated by the compiler. |
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|
372 * |
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373 * @param code the machine code generated |
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374 * @param size the size of the machine code |
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375 */ |
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376 public void setTargetCode(byte[] code, int size) { |
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377 targetCode = code; |
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378 targetCodeSize = size; |
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|
379 } |
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|
380 |
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|
381 /** |
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382 * Records a reference to the data section in the code section (e.g. to load an integer or floating point constant). |
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383 * |
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384 * @param codePos the position in the code where the data reference occurs |
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385 * @param data the data that is referenced |
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parents:
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386 * @param alignment the alignment requirement of the data or 0 if there is no alignment requirement |
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parents:
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387 */ |
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parents:
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388 public void recordDataReference(int codePos, CiConstant data, int alignment) { |
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parents:
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389 assert codePos >= 0 && data != null; |
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390 dataReferences.add(new DataPatch(codePos, data, alignment)); |
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parents:
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391 } |
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parents:
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392 |
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parents:
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393 /** |
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parents:
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394 * Records a call in the code array. |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
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395 * |
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parents:
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396 * @param codePos the position of the call in the code array |
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parents:
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397 * @param size the size of the call instruction |
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parents:
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398 * @param target the {@link RiRuntime#asCallTarget(Object) target} being called |
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parents:
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399 * @param debugInfo the debug info for the call |
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parents:
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400 * @param direct specifies if this is a {@linkplain Call#direct direct} call |
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parents:
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401 */ |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
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402 public void recordCall(int codePos, int size, Object target, CiDebugInfo debugInfo, boolean direct) { |
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403 final Call call = new Call(target, codePos, size, direct, debugInfo); |
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parents:
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404 addSafepoint(call); |
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parents:
diff
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|
405 } |
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parents:
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406 |
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parents:
diff
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|
407 /** |
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parents:
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408 * Records an exception handler for this method. |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
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409 * |
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parents:
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410 * @param codePos the position in the code that is covered by the handler |
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parents:
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411 * @param handlerPos the position of the handler |
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parents:
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412 * @param throwableType the type of exceptions handled by the handler |
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parents:
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413 */ |
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parents:
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414 public void recordExceptionHandler(int codePos, int bci, int scopeLevel, int handlerPos, int handlerBci, RiType throwableType) { |
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415 exceptionHandlers.add(new ExceptionHandler(codePos, bci, scopeLevel, handlerPos, handlerBci, throwableType)); |
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parents:
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416 } |
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parents:
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417 |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
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418 /** |
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parents:
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419 * Records a safepoint in the code array. |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
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420 * |
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parents:
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421 * @param codePos the position of the safepoint in the code array |
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parents:
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422 * @param debugInfo the debug info for the safepoint |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
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423 */ |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
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424 public void recordSafepoint(int codePos, CiDebugInfo debugInfo) { |
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425 addSafepoint(new Safepoint(codePos, debugInfo)); |
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parents:
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426 } |
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parents:
diff
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|
427 |
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parents:
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428 private void addSafepoint(Safepoint safepoint) { |
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parents:
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429 // The safepoints list must always be sorted |
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430 if (!safepoints.isEmpty() && safepoints.get(safepoints.size() - 1).pcOffset >= safepoint.pcOffset) { |
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431 // This re-sorting should be very rare |
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|
432 Collections.sort(safepoints); |
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parents:
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433 } |
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parents:
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434 safepoints.add(safepoint); |
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parents:
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|
435 } |
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parents:
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|
436 |
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parents:
diff
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|
437 /** |
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438 * Records an instruction mark within this method. |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
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|
439 * |
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440 * @param codePos the position in the code that is covered by the handler |
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parents:
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441 * @param id the identifier for this mark |
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parents:
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442 * @param references an array of other marks that this mark references |
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parents:
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443 */ |
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parents:
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444 public Mark recordMark(int codePos, Object id, Mark[] references) { |
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445 Mark mark = new Mark(codePos, id, references); |
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446 marks.add(mark); |
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parents:
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447 return mark; |
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parents:
diff
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|
448 } |
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|
449 |
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parents:
diff
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|
450 /** |
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parents:
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|
451 * Allows a method to specify the offset of the epilogue that restores the callee saved registers. Must be called |
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452 * iff the method is a callee saved method and stores callee registers on the stack. |
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parents:
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|
453 * |
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parents:
diff
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|
454 * @param registerRestoreEpilogueOffset the offset in the machine code where the epilogue begins |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
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|
455 */ |
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parents:
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456 public void setRegisterRestoreEpilogueOffset(int registerRestoreEpilogueOffset) { |
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parents:
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457 assert this.registerRestoreEpilogueOffset == -1; |
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parents:
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|
458 this.registerRestoreEpilogueOffset = registerRestoreEpilogueOffset; |
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parents:
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|
459 } |
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parents:
diff
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|
460 |
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parents:
diff
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|
461 /** |
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|
462 * The frame size of the method in bytes. |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
463 * |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
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|
464 * @return the frame size |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
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|
465 */ |
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parents:
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|
466 public int frameSize() { |
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parents:
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|
467 assert frameSize != -1 : "frame size not yet initialized!"; |
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parents:
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468 return frameSize; |
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parents:
diff
changeset
|
469 } |
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parents:
diff
changeset
|
470 |
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parents:
diff
changeset
|
471 /** |
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parents:
diff
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|
472 * @return the code offset of the start of the epilogue that restores all callee saved registers, or -1 if this is |
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parents:
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changeset
|
473 * not a callee saved method |
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parents:
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|
474 */ |
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parents:
diff
changeset
|
475 public int registerRestoreEpilogueOffset() { |
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parents:
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|
476 return registerRestoreEpilogueOffset; |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
477 } |
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parents:
diff
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|
478 |
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parents:
diff
changeset
|
479 /** |
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parents:
diff
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|
480 * Offset in bytes for the custom stack area (relative to sp). |
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parents:
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|
481 * @return the offset in bytes |
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parents:
diff
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|
482 */ |
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parents:
diff
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|
483 public int customStackAreaOffset() { |
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|
484 return customStackAreaOffset; |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
485 } |
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parents:
diff
changeset
|
486 |
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parents:
diff
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|
487 /** |
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parents:
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|
488 * @see #customStackAreaOffset() |
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parents:
diff
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|
489 * @param offset |
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parents:
diff
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|
490 */ |
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parents:
diff
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|
491 public void setCustomStackAreaOffset(int offset) { |
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parents:
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|
492 customStackAreaOffset = offset; |
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parents:
diff
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|
493 } |
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parents:
diff
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|
494 |
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parents:
diff
changeset
|
495 /** |
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parents:
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|
496 * @return the machine code generated for this method |
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parents:
diff
changeset
|
497 */ |
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parents:
diff
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|
498 public byte[] targetCode() { |
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parents:
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|
499 return targetCode; |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
500 } |
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parents:
diff
changeset
|
501 |
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parents:
diff
changeset
|
502 /** |
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parents:
diff
changeset
|
503 * @return the size of the machine code generated for this method |
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parents:
diff
changeset
|
504 */ |
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parents:
diff
changeset
|
505 public int targetCodeSize() { |
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parents:
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|
506 return targetCodeSize; |
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parents:
diff
changeset
|
507 } |
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parents:
diff
changeset
|
508 |
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Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
parents:
diff
changeset
|
509 /** |
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parents:
diff
changeset
|
510 * @return the code annotations or {@code null} if there are none |
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parents:
diff
changeset
|
511 */ |
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parents:
diff
changeset
|
512 public List<CodeAnnotation> annotations() { |
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513 return annotations; |
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514 } |
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515 |
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516 public void addAnnotation(CodeAnnotation annotation) { |
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517 assert annotation != null; |
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518 if (annotations == null) { |
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519 annotations = new ArrayList<CiTargetMethod.CodeAnnotation>(); |
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520 } |
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521 annotations.add(annotation); |
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522 } |
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523 |
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524 private static void appendDebugInfo(StringBuilder sb, CiDebugInfo info) { |
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525 if (info != null) { |
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526 appendRefMap(sb, "stackMap", info.frameRefMap); |
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527 appendRefMap(sb, "registerMap", info.registerRefMap); |
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528 CiCodePos codePos = info.codePos; |
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529 if (codePos != null) { |
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530 CiUtil.appendLocation(sb.append(" "), codePos.method, codePos.bci); |
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531 if (info.hasFrame()) { |
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532 sb.append(" #locals=").append(info.frame().numLocals).append(" #expr=").append(info.frame().numStack); |
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533 if (info.frame().numLocks > 0) { |
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534 sb.append(" #locks=").append(info.frame().numLocks); |
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535 } |
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536 } |
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537 } |
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538 } |
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539 } |
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540 |
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541 private static void appendRefMap(StringBuilder sb, String name, CiBitMap map) { |
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542 if (map != null) { |
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543 sb.append(' ').append(name).append('[').append(map.toBinaryString(-1)).append(']'); |
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544 } |
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545 } |
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546 } |