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annotate graal/com.oracle.max.asmdis/src/com/sun/max/asm/gen/risc/RiscTemplate.java @ 4142:bc8527f3071c

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
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.risc;
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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.asm.gen.risc.field.*;
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29 import com.sun.max.program.*;
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30
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31 /**
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32 */
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33 public class RiscTemplate extends Template implements RiscInstructionDescriptionVisitor {
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34
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35 private final List<RiscField> allFields = new LinkedList<>();
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36 private final List<OperandField> operandFields = new LinkedList<>();
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37 private final List<OptionField> optionFields = new LinkedList<>();
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38 private final List<OperandField> parameters = new ArrayList<>();
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39 private final List<Option> options = new LinkedList<>();
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40
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41 private int opcode;
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42 private int opcodeMask;
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43 private RiscTemplate canonicalRepresentative;
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44
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45 public RiscTemplate(InstructionDescription instructionDescription) {
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46 super(instructionDescription);
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47 }
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48
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49 @Override
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50 public RiscInstructionDescription instructionDescription() {
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51 return (RiscInstructionDescription) super.instructionDescription();
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52 }
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53
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54 private RiscTemplate synthesizedFrom;
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55
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56 public void setSynthesizedFrom(RiscTemplate synthesizedFrom) {
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57 assert instructionDescription().isSynthetic();
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58 this.synthesizedFrom = synthesizedFrom;
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59 }
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60
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61 public RiscTemplate synthesizedFrom() {
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62 return synthesizedFrom;
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63 }
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64
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65 /**
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66 * Adds the value of a constant field to the opcode of the instruction and
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67 * updates the opcode mask to include the bits of the field.
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68 *
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69 * @param field a field containing a constant value
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70 * @param value the constant value
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71 */
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72 private void organizeConstant(RiscField field, int value) {
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73 try {
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74 opcode |= field.bitRange().assembleUnsignedInt(value);
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75 opcodeMask |= field.bitRange().instructionMask();
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76 } catch (IndexOutOfBoundsException indexOutOfBoundsException) {
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77 throw ProgramError.unexpected("operand for constant field " + field.name() + " does not fit: " + value);
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78 }
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79 }
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80
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81 public void visitField(RiscField field) {
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82 allFields.add(field);
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83 if (field instanceof OperandField) {
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84 final OperandField operandField = (OperandField) field;
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85 if (field instanceof OffsetParameter) {
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86 setLabelParameterIndex();
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87 }
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88 if (operandField.boundTo() == null) {
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89 parameters.add(operandField);
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90 }
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91 operandFields.add(operandField);
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92 } else if (field instanceof OptionField) {
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93 optionFields.add((OptionField) field);
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94 } else if (field instanceof ReservedField) {
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95 organizeConstant(field, 0);
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96 } else {
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97 throw ProgramError.unexpected("unknown or unallowed type of field: " + field);
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98 }
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99 }
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100
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101 public void visitConstant(RiscConstant constant) {
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102 organizeConstant(constant.field(), constant.value());
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103 }
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104
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105 public void visitConstraint(InstructionConstraint constraint) {
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106 }
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107
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108 /**
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109 * Sets the internal name of this template from a given string it is not already set.
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110 *
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111 * @param string a string specified in the to consider
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112 */
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113 public void visitString(String string) {
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114 if (internalName() == null) {
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115 setInternalName(string);
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116 }
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117 }
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118
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119 public List<OperandField> operandFields() {
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120 return operandFields;
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121 }
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122
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123 public int opcode() {
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124 return opcode;
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125 }
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126
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127 public int opcodeMask() {
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128 return opcodeMask;
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129 }
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130
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131 public List<OptionField> optionFields() {
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132 return optionFields;
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133 }
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134
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135 public void addOptionField(OptionField f) {
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136 allFields.add(f);
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137 optionFields.add(f);
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138 }
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139
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140 public int specificity() {
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141 return Integer.bitCount(opcodeMask);
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142 }
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143
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144 public void organizeOption(Option option, RiscTemplate newCanonicalRepresentative) {
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145 instructionDescription().setExternalName(externalName() + option.externalName());
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146 setInternalName(internalName() + option.name());
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147 try {
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148 opcode |= option.field().bitRange().assembleUnsignedInt(option.value());
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149 opcodeMask |= option.field().bitRange().instructionMask();
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150 } catch (IndexOutOfBoundsException e) {
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151 throw ProgramError.unexpected("Option: " + option.name() + " does not fit in field " + option.field().name());
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152 }
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153
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154 options.add(option);
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155 if (option.isRedundant()) {
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156 this.canonicalRepresentative = newCanonicalRepresentative;
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157 }
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158 }
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159
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160 @Override
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161 public Template canonicalRepresentative() {
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162 return canonicalRepresentative;
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163 }
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164
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165 @Override
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166 public String assemblerMethodName() {
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167 return internalName();
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168 }
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169
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170 @Override
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171 public List<Operand> operands() {
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172 throw ProgramError.unexpected("unimplemented");
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173 }
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174
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175 @Override
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176 public List<OperandField> parameters() {
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177 return parameters;
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178 }
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179
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180 @Override
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181 public String toString() {
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182 return "<" + getClass().getSimpleName() + " #" + serial() + ": " + internalName() + " " + Integer.toHexString(opcode()) + ", " + parameters() + ">";
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183 }
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184
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185 }