Mercurial > hg > truffle
annotate graal/com.oracle.max.asmdis/src/com/sun/max/asm/gen/cisc/x86/X86TemplateCreator.java @ 3733:e233f5660da4
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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) 2007, 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.max.asm.gen.cisc.x86; |
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24 |
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25 import java.util.*; |
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26 |
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27 import com.sun.max.asm.gen.*; |
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28 import com.sun.max.lang.*; |
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29 |
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30 /** |
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31 */ |
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32 public abstract class X86TemplateCreator<Template_Type extends X86Template> { |
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33 |
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34 private final Assembly assembly; |
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35 private final WordWidth addressWidth; |
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36 private X86InstructionDescription instructionDescription; |
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37 private InstructionAssessment instructionAssessment; |
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38 private X86TemplateContext context; |
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39 private int serial = 1; |
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40 |
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41 protected X86TemplateCreator(Assembly assembly, WordWidth addressWidth) { |
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42 this.assembly = assembly; |
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43 this.addressWidth = addressWidth; |
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44 } |
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45 |
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46 private final List<Template_Type> templates = new ArrayList<Template_Type>(); |
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47 |
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48 public List<Template_Type> templates() { |
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49 return templates; |
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50 } |
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51 |
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52 private final Map<String, List<Template_Type>> internalNameToTemplates = new HashMap<String, List<Template_Type>>(); |
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53 |
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54 private void addTemplate(Template_Type template) { |
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55 templates.add(template); |
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56 List<Template_Type> t = internalNameToTemplates.get(template.internalName()); |
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57 if (t == null) { |
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58 t = new LinkedList<Template_Type>(); |
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59 internalNameToTemplates.put(template.internalName(), t); |
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60 } |
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61 t.add(template); |
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62 } |
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63 |
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64 private void computeRedundancy(X86Template template) { |
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65 final List<Template_Type> t = internalNameToTemplates.get(template.internalName()); |
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66 if (t != null) { |
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67 for (X86Template other : t) { |
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68 if (template.computeRedundancyWith(other)) { |
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69 return; |
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70 } |
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71 } |
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72 } |
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73 } |
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74 |
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75 protected abstract Template_Type createTemplate(X86InstructionDescription description, int ser, InstructionAssessment instructionFamily, X86TemplateContext contxt); |
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76 |
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77 private void createTemplate() { |
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78 final Template_Type template = createTemplate(instructionDescription, serial, instructionAssessment, context); |
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79 if (X86InstructionDescriptionVisitor.Static.visitInstructionDescription(template, instructionDescription)) { |
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80 final InstructionDescription modRMInstructionDescription = template.modRMInstructionDescription(); |
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81 if (modRMInstructionDescription != null && !X86InstructionDescriptionVisitor.Static.visitInstructionDescription(template, modRMInstructionDescription)) { |
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82 return; |
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83 } |
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84 computeRedundancy(template); |
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85 addTemplate(template); |
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86 serial++; |
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87 } |
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88 } |
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89 |
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90 private void createTemplatesForSibBaseCases() { |
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91 for (X86TemplateContext.SibBaseCase sibBaseCase : X86TemplateContext.SibBaseCase.VALUES) { |
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92 if (sibBaseCase == X86TemplateContext.SibBaseCase.GENERAL_REGISTER || context.modCase() == X86TemplateContext.ModCase.MOD_0) { |
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93 context = context.clone(); |
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94 context.sibBaseCase = sibBaseCase; |
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95 createTemplate(); |
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96 } |
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97 } |
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98 } |
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99 |
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100 private void createTemplatesForSibIndexCases() { |
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101 for (X86TemplateContext.SibIndexCase sibIndexCase : X86TemplateContext.SibIndexCase.VALUES) { |
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102 context = context.clone(); |
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103 context.setSibIndexCase(sibIndexCase); |
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104 createTemplatesForSibBaseCases(); |
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105 } |
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106 } |
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107 |
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108 private void createTemplatesForRMCases() { |
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109 for (X86TemplateContext.RMCase rmCase : X86TemplateContext.RMCase.VALUES) { |
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110 context = context.clone(); |
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111 context.setRMCase(rmCase); |
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112 switch (context.modCase()) { |
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113 case MOD_3: { |
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114 if (rmCase == X86TemplateContext.RMCase.NORMAL) { |
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115 createTemplate(); |
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116 } |
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117 break; |
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118 } |
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119 default: { |
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120 switch (rmCase) { |
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121 case SIB: |
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122 createTemplatesForSibIndexCases(); |
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123 break; |
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124 default: |
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125 createTemplate(); |
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126 break; |
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127 } |
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128 } |
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129 } |
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130 } |
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131 } |
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132 |
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133 private void createTemplatesForModRMGroups() { |
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134 if (instructionAssessment.modRMGroup() != null) { |
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135 for (ModRMGroup.Opcode modRMGroupOpcode : ModRMGroup.Opcode.VALUES) { |
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136 context = context.clone(); |
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137 context.setModRMGroupOpcode(modRMGroupOpcode); |
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138 createTemplatesForRMCases(); |
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139 } |
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140 } else { |
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141 createTemplatesForRMCases(); |
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142 } |
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143 } |
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144 |
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145 private void createTemplatesForModCases(WordWidth operandSizeAttribute) { |
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146 context = context.clone(); |
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147 context.setOperandSizeAttribute(operandSizeAttribute); |
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148 |
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149 if (instructionAssessment.hasModRMByte()) { |
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150 for (X86TemplateContext.ModCase modCase : X86TemplateContext.ModCase.VALUES) { |
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151 context = context.clone(); |
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152 context.setModCase(modCase); |
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153 createTemplatesForModRMGroups(); |
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154 } |
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155 } else { |
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156 createTemplate(); |
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157 } |
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158 } |
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159 |
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160 private void createTemplatesForOperandSizeAttribute(WordWidth addressSizeAttribute) { |
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161 context = context.clone(); |
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162 context.setAddressSizeAttribute(addressSizeAttribute); |
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163 |
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164 if (instructionDescription.requiredOperandSize() != null) { |
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165 createTemplatesForModCases(instructionDescription.requiredOperandSize()); |
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166 } else { |
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167 if (instructionDescription.defaultOperandSize() != WordWidth.BITS_64) { |
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168 createTemplatesForModCases(WordWidth.BITS_32); |
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169 } |
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170 if (addressWidth == WordWidth.BITS_64) { |
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171 createTemplatesForModCases(WordWidth.BITS_64); |
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172 } |
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173 if (X86Assembly.are16BitOffsetsSupported() || !instructionAssessment.isJump()) { |
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174 createTemplatesForModCases(WordWidth.BITS_16); |
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175 } |
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176 } |
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177 } |
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178 |
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179 private void createTemplatesForAddressSizeAttribute() { |
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180 if (instructionDescription.requiredAddressSize() != null) { |
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181 if (X86Assembly.are16BitAddressesSupported() || instructionDescription.requiredAddressSize() == addressWidth) { |
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182 createTemplatesForOperandSizeAttribute(instructionDescription.requiredAddressSize()); |
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183 } |
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184 } else { |
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185 createTemplatesForOperandSizeAttribute(addressWidth); |
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186 if (X86Assembly.are16BitAddressesSupported() && instructionAssessment.hasAddressSizeVariants()) { |
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187 createTemplatesForOperandSizeAttribute(WordWidth.fromInt(addressWidth.numberOfBits / 2)); |
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188 } |
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189 } |
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190 } |
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191 |
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192 public void createTemplates(InstructionDescriptionCreator<X86InstructionDescription> instructionDescriptionCreator) { |
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193 for (X86InstructionDescription description : instructionDescriptionCreator.instructionDescriptions()) { |
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194 this.instructionDescription = description; |
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195 this.instructionAssessment = new InstructionAssessment(); |
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196 final OpcodeAssessor assessor = new OpcodeAssessor(instructionAssessment); |
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197 X86InstructionDescriptionVisitor.Static.visitInstructionDescription(assessor, description); |
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198 this.context = new X86TemplateContext(); |
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199 createTemplatesForAddressSizeAttribute(); |
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200 } |
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201 } |
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202 } |