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annotate graal/com.oracle.max.asmdis/src/com/sun/max/asm/gen/cisc/x86/X86TemplateCreator.java @ 4142:bc8527f3071c

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Adjust code base to new level of warnings.
author Thomas Wuerthinger <thomas.wuerthinger@oracle.com>
date Sun, 18 Dec 2011 05:24:06 +0100
parents e233f5660da4
children
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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 WordWidth addressWidth;
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35 private X86InstructionDescription instructionDescription;
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36 private InstructionAssessment instructionAssessment;
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37 private X86TemplateContext context;
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38 private int serial = 1;
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39
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40 protected X86TemplateCreator(WordWidth addressWidth) {
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41 this.addressWidth = addressWidth;
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42 }
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43
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44 private final List<Template_Type> templates = new ArrayList<>();
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45
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46 public List<Template_Type> templates() {
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47 return templates;
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48 }
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49
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50 private final Map<String, List<Template_Type>> internalNameToTemplates = new HashMap<>();
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51
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52 private void addTemplate(Template_Type template) {
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53 templates.add(template);
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54 List<Template_Type> t = internalNameToTemplates.get(template.internalName());
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55 if (t == null) {
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56 t = new LinkedList<>();
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57 internalNameToTemplates.put(template.internalName(), t);
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58 }
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59 t.add(template);
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60 }
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61
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62 private void computeRedundancy(X86Template template) {
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63 final List<Template_Type> t = internalNameToTemplates.get(template.internalName());
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64 if (t != null) {
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65 for (X86Template other : t) {
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66 if (template.computeRedundancyWith(other)) {
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67 return;
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68 }
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69 }
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70 }
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71 }
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72
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73 protected abstract Template_Type createTemplate(X86InstructionDescription description, int ser, InstructionAssessment instructionFamily, X86TemplateContext contxt);
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74
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75 private void createTemplate() {
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76 final Template_Type template = createTemplate(instructionDescription, serial, instructionAssessment, context);
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77 if (X86InstructionDescriptionVisitor.Static.visitInstructionDescription(template, instructionDescription)) {
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78 final InstructionDescription modRMInstructionDescription = template.modRMInstructionDescription();
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79 if (modRMInstructionDescription != null && !X86InstructionDescriptionVisitor.Static.visitInstructionDescription(template, modRMInstructionDescription)) {
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80 return;
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81 }
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82 computeRedundancy(template);
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83 addTemplate(template);
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84 serial++;
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85 }
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86 }
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87
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88 private void createTemplatesForSibBaseCases() {
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89 for (X86TemplateContext.SibBaseCase sibBaseCase : X86TemplateContext.SibBaseCase.VALUES) {
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90 if (sibBaseCase == X86TemplateContext.SibBaseCase.GENERAL_REGISTER || context.modCase() == X86TemplateContext.ModCase.MOD_0) {
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91 context = context.clone();
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92 context.sibBaseCase = sibBaseCase;
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93 createTemplate();
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94 }
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95 }
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96 }
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97
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98 private void createTemplatesForSibIndexCases() {
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99 for (X86TemplateContext.SibIndexCase sibIndexCase : X86TemplateContext.SibIndexCase.VALUES) {
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100 context = context.clone();
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101 context.setSibIndexCase(sibIndexCase);
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102 createTemplatesForSibBaseCases();
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103 }
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104 }
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105
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106 private void createTemplatesForRMCases() {
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107 for (X86TemplateContext.RMCase rmCase : X86TemplateContext.RMCase.VALUES) {
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108 context = context.clone();
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109 context.setRMCase(rmCase);
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110 switch (context.modCase()) {
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111 case MOD_3: {
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112 if (rmCase == X86TemplateContext.RMCase.NORMAL) {
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113 createTemplate();
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114 }
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115 break;
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116 }
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117 default: {
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118 switch (rmCase) {
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119 case SIB:
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120 createTemplatesForSibIndexCases();
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121 break;
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122 default:
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123 createTemplate();
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124 break;
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125 }
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126 }
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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 private void createTemplatesForModRMGroups() {
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132 if (instructionAssessment.modRMGroup() != null) {
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133 for (ModRMGroup.Opcode modRMGroupOpcode : ModRMGroup.Opcode.VALUES) {
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134 context = context.clone();
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135 context.setModRMGroupOpcode(modRMGroupOpcode);
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136 createTemplatesForRMCases();
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137 }
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138 } else {
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139 createTemplatesForRMCases();
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140 }
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141 }
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142
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143 private void createTemplatesForModCases(WordWidth operandSizeAttribute) {
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144 context = context.clone();
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145 context.setOperandSizeAttribute(operandSizeAttribute);
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146
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147 if (instructionAssessment.hasModRMByte()) {
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148 for (X86TemplateContext.ModCase modCase : X86TemplateContext.ModCase.VALUES) {
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149 context = context.clone();
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150 context.setModCase(modCase);
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151 createTemplatesForModRMGroups();
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152 }
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153 } else {
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154 createTemplate();
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155 }
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156 }
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157
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158 private void createTemplatesForOperandSizeAttribute(WordWidth addressSizeAttribute) {
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159 context = context.clone();
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160 context.setAddressSizeAttribute(addressSizeAttribute);
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161
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162 if (instructionDescription.requiredOperandSize() != null) {
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163 createTemplatesForModCases(instructionDescription.requiredOperandSize());
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164 } else {
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165 if (instructionDescription.defaultOperandSize() != WordWidth.BITS_64) {
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166 createTemplatesForModCases(WordWidth.BITS_32);
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167 }
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168 if (addressWidth == WordWidth.BITS_64) {
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169 createTemplatesForModCases(WordWidth.BITS_64);
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170 }
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171 if (X86Assembly.are16BitOffsetsSupported() || !instructionAssessment.isJump()) {
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172 createTemplatesForModCases(WordWidth.BITS_16);
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173 }
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174 }
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175 }
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176
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177 private void createTemplatesForAddressSizeAttribute() {
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178 if (instructionDescription.requiredAddressSize() != null) {
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179 if (X86Assembly.are16BitAddressesSupported() || instructionDescription.requiredAddressSize() == addressWidth) {
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180 createTemplatesForOperandSizeAttribute(instructionDescription.requiredAddressSize());
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181 }
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182 } else {
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183 createTemplatesForOperandSizeAttribute(addressWidth);
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184 if (X86Assembly.are16BitAddressesSupported() && instructionAssessment.hasAddressSizeVariants()) {
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185 createTemplatesForOperandSizeAttribute(WordWidth.fromInt(addressWidth.numberOfBits / 2));
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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 public void createTemplates(InstructionDescriptionCreator<X86InstructionDescription> instructionDescriptionCreator) {
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191 for (X86InstructionDescription description : instructionDescriptionCreator.instructionDescriptions()) {
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192 this.instructionDescription = description;
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193 this.instructionAssessment = new InstructionAssessment();
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194 final OpcodeAssessor assessor = new OpcodeAssessor(instructionAssessment);
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195 X86InstructionDescriptionVisitor.Static.visitInstructionDescription(assessor, description);
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196 this.context = new X86TemplateContext();
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197 createTemplatesForAddressSizeAttribute();
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198 }
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199 }
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200 }