microop.cc revision 5138:069bbeae1ef8
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/microop.hh" 59#include "arch/x86/miscregs.hh" 60 61namespace X86ISA 62{ 63 64 bool X86MicroopBase::checkCondition(uint64_t flags, int condition) const 65 { 66 CCFlagBits ccflags = flags; 67 switch(condition) 68 { 69 case ConditionTests::True: 70 return true; 71 case ConditionTests::ECF: 72 return ccflags.ecf; 73 case ConditionTests::EZF: 74 return ccflags.ezf; 75 case ConditionTests::SZnZF: 76 return !(!ccflags.ezf & ccflags.zf); 77 case ConditionTests::MSTRZ: 78 panic("This condition is not implemented!"); 79 case ConditionTests::STRZ: 80 panic("This condition is not implemented!"); 81 case ConditionTests::MSTRC: 82 panic("This condition is not implemented!"); 83 case ConditionTests::STRZnEZF: 84 return !ccflags.ezf & ccflags.zf; 85 //And no interrupts or debug traps are waiting 86 case ConditionTests::OF: 87 return ccflags.of; 88 case ConditionTests::CF: 89 return ccflags.cf; 90 case ConditionTests::ZF: 91 return ccflags.zf; 92 case ConditionTests::CvZF: 93 return ccflags.cf | ccflags.zf; 94 case ConditionTests::SF: 95 return ccflags.sf; 96 case ConditionTests::PF: 97 return ccflags.pf; 98 case ConditionTests::SxOF: 99 return ccflags.sf ^ ccflags.of; 100 case ConditionTests::SxOvZF: 101 return ccflags.sf ^ ccflags.of | ccflags.zf; 102 case ConditionTests::False: 103 return false; 104 case ConditionTests::NotECF: 105 return !ccflags.ecf; 106 case ConditionTests::NotEZF: 107 return !ccflags.ezf; 108 case ConditionTests::NotSZnZF: 109 return !ccflags.ezf & ccflags.zf; 110 case ConditionTests::NotMSTRZ: 111 panic("This condition is not implemented!"); 112 case ConditionTests::NotSTRZ: 113 panic("This condition is not implemented!"); 114 case ConditionTests::NotMSTRC: 115 panic("This condition is not implemented!"); 116 case ConditionTests::STRnZnEZF: 117 return !ccflags.ezf & !ccflags.zf; 118 //And no interrupts or debug traps are waiting 119 case ConditionTests::NotOF: 120 return !ccflags.of; 121 case ConditionTests::NotCF: 122 return !ccflags.cf; 123 case ConditionTests::NotZF: 124 return !ccflags.zf; 125 case ConditionTests::NotCvZF: 126 return !(ccflags.cf | ccflags.zf); 127 case ConditionTests::NotSF: 128 return !ccflags.sf; 129 case ConditionTests::NotPF: 130 return !ccflags.pf; 131 case ConditionTests::NotSxOF: 132 return !(ccflags.sf ^ ccflags.of); 133 case ConditionTests::NotSxOvZF: 134 return !(ccflags.sf ^ ccflags.of | ccflags.zf); 135 } 136 panic("Unknown condition: %d\n", condition); 137 return true; 138 } 139} 140