1/* 2 * Copyright (c) 2007 The Hewlett-Packard Development Company 3 * All rights reserved. 4 * 5 * Redistribution and use of this software in source and binary forms, 6 * with or without modification, are permitted provided that the 7 * following conditions are met: 8 * 9 * The software must be used only for Non-Commercial Use which means any 10 * use which is NOT directed to receiving any direct monetary 11 * compensation for, or commercial advantage from such use. Illustrative 12 * examples of non-commercial use are academic research, personal study, 13 * teaching, education and corporate research & development. 14 * Illustrative examples of commercial use are distributing products for 15 * commercial advantage and providing services using the software for 16 * commercial advantage. 17 * 18 * If you wish to use this software or functionality therein that may be 19 * covered by patents for commercial use, please contact: 20 * Director of Intellectual Property Licensing 21 * Office of Strategy and Technology 22 * Hewlett-Packard Company 23 * 1501 Page Mill Road 24 * Palo Alto, California 94304 25 * 26 * Redistributions of source code must retain the above copyright notice, 27 * this list of conditions and the following disclaimer. Redistributions 28 * in binary form must reproduce the above copyright notice, this list of 29 * conditions and the following disclaimer in the documentation and/or 30 * other materials provided with the distribution. Neither the name of 31 * the COPYRIGHT HOLDER(s), HEWLETT-PACKARD COMPANY, nor the names of its 32 * contributors may be used to endorse or promote products derived from 33 * this software without specific prior written permission. No right of 34 * sublicense is granted herewith. Derivatives of the software and 35 * output created using the software may be prepared, but only for 36 * Non-Commercial Uses. Derivatives of the software may be shared with 37 * others provided: (i) the others agree to abide by the list of 38 * conditions herein which includes the Non-Commercial Use restrictions; 39 * and (ii) such Derivatives of the software include the above copyright 40 * notice to acknowledge the contribution from this software where 41 * applicable, this list of conditions and the disclaimer below. 42 * 43 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 44 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 45 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 46 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 47 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 48 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 49 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 50 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 51 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 52 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 53 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 54 * 55 * Authors: Gabe Black 56 */ 57 58#include "arch/x86/insts/microregop.hh"
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59#include "arch/x86/miscregs.hh" 60#include "base/condcodes.hh" |
61#include <string> 62 63namespace X86ISA 64{
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65 uint64_t RegOpBase::genFlags(uint64_t oldFlags, uint64_t flagMask, 66 uint64_t _dest, uint64_t _src1, uint64_t _src2) const 67 { 68 uint64_t flags = oldFlags & ~flagMask; 69 if(flagMask & CFBit && findCarry(dataSize, _dest, _src1, _src2)) 70 flags |= CFBit; 71 if(flagMask & PFBit && findParity(dataSize, _dest)) 72 flags |= PFBit; 73 if(flagMask & ECFBit && findCarry(dataSize, _dest, _src1, _src2)) 74 flags |= ECFBit; 75 if(flagMask & AFBit && findCarry(4, _dest, _src1, _src2)) 76 flags |= AFBit; 77 if(flagMask & EZFBit && findZero(dataSize, _dest)) 78 flags |= EZFBit; 79 if(flagMask & ZFBit && findZero(dataSize, _dest)) 80 flags |= ZFBit; 81 if(flagMask & SFBit && findNegative(dataSize, _dest)) 82 flags |= SFBit; 83 if(flagMask & OFBit && findOverflow(dataSize, _dest, _src1, _src2)) 84 flags |= OFBit; 85 return flags; 86 } 87 88 bool RegOpBase::checkCondition(uint64_t flags) const 89 { 90 CCFlagBits ccflags = flags; 91 switch(ext) 92 { 93 case ConditionTests::True: 94 return true; 95 case ConditionTests::ECF: 96 return ccflags.ECF; 97 case ConditionTests::EZF: 98 return ccflags.EZF; 99 case ConditionTests::SZnZF: 100 return !(!ccflags.EZF & ccflags.ZF); 101 case ConditionTests::MSTRZ: 102 panic("This condition is not implemented!"); 103 case ConditionTests::STRZ: 104 panic("This condition is not implemented!"); 105 case ConditionTests::MSTRC: 106 panic("This condition is not implemented!"); 107 case ConditionTests::STRZnZF: 108 panic("This condition is not implemented!"); 109 case ConditionTests::OF: 110 return ccflags.OF; 111 case ConditionTests::CF: 112 return ccflags.CF; 113 case ConditionTests::ZF: 114 return ccflags.ZF; 115 case ConditionTests::CvZF: 116 return ccflags.CF | ccflags.ZF; 117 case ConditionTests::SF: 118 return ccflags.SF; 119 case ConditionTests::PF: 120 return ccflags.PF; 121 case ConditionTests::SxOF: 122 return ccflags.SF ^ ccflags.OF; 123 case ConditionTests::SxOvZF: 124 return ccflags.SF ^ ccflags.OF | ccflags.ZF; 125 case ConditionTests::False: 126 return false; 127 case ConditionTests::NotECF: 128 return !ccflags.ECF; 129 case ConditionTests::NotEZF: 130 return !ccflags.EZF; 131 case ConditionTests::NotSZnZF: 132 return !ccflags.EZF & ccflags.ZF; 133 case ConditionTests::NotMSTRZ: 134 panic("This condition is not implemented!"); 135 case ConditionTests::NotSTRZ: 136 panic("This condition is not implemented!"); 137 case ConditionTests::NotMSTRC: 138 panic("This condition is not implemented!"); 139 case ConditionTests::NotSTRZnZF: 140 panic("This condition is not implemented!"); 141 case ConditionTests::NotOF: 142 return !ccflags.OF; 143 case ConditionTests::NotCF: 144 return !ccflags.CF; 145 case ConditionTests::NotZF: 146 return !ccflags.ZF; 147 case ConditionTests::NotCvZF: 148 return !(ccflags.CF | ccflags.ZF); 149 case ConditionTests::NotSF: 150 return !ccflags.SF; 151 case ConditionTests::NotPF: 152 return !ccflags.PF; 153 case ConditionTests::NotSxOF: 154 return !(ccflags.SF ^ ccflags.OF); 155 case ConditionTests::NotSxOvZF: 156 return !(ccflags.SF ^ ccflags.OF | ccflags.ZF); 157 } 158 panic("Unknown condition: %d\n", ext); 159 return true; 160 } 161 |
162 std::string RegOp::generateDisassembly(Addr pc, 163 const SymbolTable *symtab) const 164 { 165 std::stringstream response; 166 167 printMnemonic(response, instMnem, mnemonic); 168 printReg(response, dest); 169 response << ", "; 170 printReg(response, src1); 171 response << ", "; 172 printReg(response, src2); 173 return response.str(); 174 } 175 176 std::string RegOpImm::generateDisassembly(Addr pc, 177 const SymbolTable *symtab) const 178 { 179 std::stringstream response; 180 181 printMnemonic(response, instMnem, mnemonic); 182 printReg(response, dest); 183 response << ", "; 184 printReg(response, src1); 185 ccprintf(response, ", %#x", imm8); 186 return response.str(); 187 } 188}
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