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annotate graal/com.oracle.max.asmdis/src/com/sun/max/asm/gen/cisc/x86/X86InstructionDescriptionVisitor.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 com.sun.max.asm.gen.*;
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26 import com.sun.max.asm.gen.cisc.*;
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27 import com.sun.max.asm.x86.*;
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28 import com.sun.max.program.*;
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29
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30 /**
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31 * Almost like the visitor pattern.
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32 * Specialized dispatch over InstructionDescription objects.
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33 */
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34 public interface X86InstructionDescriptionVisitor {
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35
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36 void visitOperandCode(OperandCode operandCode, X86Operand.Designation designation, ArgumentRange argumentRange, TestArgumentExclusion testArgumentExclusion) throws TemplateNotNeededException;
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37
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38 void visitAddressingMethodCode(AddressingMethodCode addressingMethodCode, X86Operand.Designation designation) throws TemplateNotNeededException;
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39
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40 void visitOperandTypeCode(OperandTypeCode operandTypeCode) throws TemplateNotNeededException;
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41
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42 void visitRegisterOperandCode(RegisterOperandCode registerOperandCode, X86Operand.Designation designation, ImplicitOperand.ExternalPresence externalPresence);
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43
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44 void visitGeneralRegister(GeneralRegister generalRegister, X86Operand.Designation designation, ImplicitOperand.ExternalPresence externalPresence);
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45
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46 void visitSegmentRegister(SegmentRegister segmentRegister, X86Operand.Designation designation);
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47
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48 void visitModRMGroup(ModRMGroup modRMGroup) throws TemplateNotNeededException;
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49
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50 void visitModCase(X86TemplateContext.ModCase modCase) throws TemplateNotNeededException;
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51
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52 void visitFloatingPointOperandCode(FloatingPointOperandCode floatingPointOperandCode, X86Operand.Designation designation, TestArgumentExclusion testArgumentExclusion) throws TemplateNotNeededException;
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53
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54 void visitFPStackRegister(FPStackRegister fpStackRegister, X86Operand.Designation designation);
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55
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56 void visitString(String string);
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57
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58 void visitInteger(Integer integer, X86Operand.Designation designation);
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59
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60 void visitHexByte(HexByte hexByte) throws TemplateNotNeededException;
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61
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62 void visitInstructionConstraint(InstructionConstraint constraint);
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63
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64 public static final class Static {
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65 private Static() {
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66 }
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67
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68 /**
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69 * @return whether the specification constitutes an operand
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70 * @throws TemplateNotNeededException
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71 */
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72 private static boolean visitSpecification(X86InstructionDescriptionVisitor visitor, Object specification,
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73 final X86Operand.Designation designation, ArgumentRange argumentRange,
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74 final TestArgumentExclusion testArgumentExclusion, ImplicitOperand.ExternalPresence externalPresence) throws TemplateNotNeededException {
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75 if (specification instanceof OperandCode) {
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76 visitor.visitOperandCode((OperandCode) specification, designation, argumentRange, testArgumentExclusion);
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77 return true;
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78 } else if (specification instanceof AddressingMethodCode) {
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79 visitor.visitAddressingMethodCode((AddressingMethodCode) specification, designation);
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80 return true;
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81 } else if (specification instanceof OperandTypeCode) {
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82 visitor.visitOperandTypeCode((OperandTypeCode) specification);
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83 return false;
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84 } else if (specification instanceof RegisterOperandCode) {
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85 visitor.visitRegisterOperandCode((RegisterOperandCode) specification, designation, externalPresence);
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86 return true;
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87 } else if (specification instanceof GeneralRegister) {
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88 visitor.visitGeneralRegister((GeneralRegister) specification, designation, externalPresence);
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89 return true;
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90 } else if (specification instanceof SegmentRegister) {
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91 visitor.visitSegmentRegister((SegmentRegister) specification, designation);
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92 return true;
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93 } else if (specification instanceof ModRMGroup) {
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94 visitor.visitModRMGroup((ModRMGroup) specification);
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95 return false;
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96 } else if (specification instanceof X86TemplateContext.ModCase) {
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97 visitor.visitModCase((X86TemplateContext.ModCase) specification);
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98 return false;
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99 } else if (specification instanceof FloatingPointOperandCode) {
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100 visitor.visitFloatingPointOperandCode((FloatingPointOperandCode) specification, designation, testArgumentExclusion);
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101 return true;
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102 } else if (specification instanceof FPStackRegister) {
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103 visitor.visitFPStackRegister((FPStackRegister) specification, designation);
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104 return true;
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105 } else if (specification instanceof String) {
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106 visitor.visitString((String) specification);
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107 return false;
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108 } else if (specification instanceof Integer) {
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109 visitor.visitInteger((Integer) specification, designation);
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110 return true;
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111 } else if (specification instanceof ArgumentRange) {
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112 final ArgumentRange newArgumentRange = (ArgumentRange) specification;
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113 return visitSpecification(visitor, newArgumentRange.wrappedSpecification(), designation, newArgumentRange, testArgumentExclusion, externalPresence);
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114 } else if (specification instanceof HexByte) {
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115 visitor.visitHexByte((HexByte) specification);
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116 return false;
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117 } else if (specification instanceof TestArgumentExclusion) {
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118 final TestArgumentExclusion exclusion = (TestArgumentExclusion) specification;
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119 return visitSpecification(visitor, exclusion.wrappedSpecification(), designation, argumentRange, exclusion, externalPresence);
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120 } else if (specification instanceof ExternalOmission) {
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121 final ExternalOmission omission = (ExternalOmission) specification;
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122 return visitSpecification(visitor, omission.wrappedSpecification(), designation, argumentRange, testArgumentExclusion, ImplicitOperand.ExternalPresence.OMITTED);
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123 } else {
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124 throw ProgramError.unexpected("unknown instruction description specification: " + specification);
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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 * @return whether this instruction description is to be used to create a template in the given context
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130 */
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131 public static boolean visitInstructionDescription(X86InstructionDescriptionVisitor visitor, InstructionDescription instructionDescription) {
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132 try {
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133 int designationIndex = 0;
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134 for (Object specification : instructionDescription) {
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135 final X86Operand.Designation designation = X86Operand.Designation.VALUES.get(designationIndex);
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136 if (visitSpecification(visitor, specification, designation, ArgumentRange.UNSPECIFIED, TestArgumentExclusion.NONE, ImplicitOperand.ExternalPresence.EXPLICIT)) {
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137 designationIndex++;
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138 }
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139 }
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140 return true;
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141 } catch (TemplateNotNeededException templateNotNeededException) {
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142 return false;
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143 }
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144 }
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145 }
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146 }