microop.cc revision 7629:0f0c231e3e97
1/* 2 * Copyright (c) 2007 The Hewlett-Packard Development Company 3 * All rights reserved. 4 * 5 * The license below extends only to copyright in the software and shall 6 * not be construed as granting a license to any other intellectual 7 * property including but not limited to intellectual property relating 8 * to a hardware implementation of the functionality of the software 9 * licensed hereunder. You may use the software subject to the license 10 * terms below provided that you ensure that this notice is replicated 11 * unmodified and in its entirety in all distributions of the software, 12 * modified or unmodified, in source code or in binary form. 13 * 14 * Redistribution and use in source and binary forms, with or without 15 * modification, are permitted provided that the following conditions are 16 * met: redistributions of source code must retain the above copyright 17 * notice, this list of conditions and the following disclaimer; 18 * redistributions in binary form must reproduce the above copyright 19 * notice, this list of conditions and the following disclaimer in the 20 * documentation and/or other materials provided with the distribution; 21 * neither the name of the copyright holders nor the names of its 22 * contributors may be used to endorse or promote products derived from 23 * this software without specific prior written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 26 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 27 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 28 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 29 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 30 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 31 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 32 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 33 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 34 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 35 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 36 * 37 * Authors: Gabe Black 38 */ 39 40#include "arch/x86/insts/microop.hh" 41#include "arch/x86/regs/misc.hh" 42 43namespace X86ISA 44{ 45 46 bool X86MicroopBase::checkCondition(uint64_t flags, int condition) const 47 { 48 CCFlagBits ccflags = flags; 49 switch(condition) 50 { 51 case ConditionTests::True: 52 return true; 53 case ConditionTests::ECF: 54 return ccflags.ecf; 55 case ConditionTests::EZF: 56 return ccflags.ezf; 57 case ConditionTests::SZnZF: 58 return !(!ccflags.ezf & ccflags.zf); 59 case ConditionTests::MSTRZ: 60 panic("This condition is not implemented!"); 61 case ConditionTests::STRZ: 62 panic("This condition is not implemented!"); 63 case ConditionTests::MSTRC: 64 panic("This condition is not implemented!"); 65 case ConditionTests::STRZnEZF: 66 return !ccflags.ezf & ccflags.zf; 67 //And no interrupts or debug traps are waiting 68 case ConditionTests::OF: 69 return ccflags.of; 70 case ConditionTests::CF: 71 return ccflags.cf; 72 case ConditionTests::ZF: 73 return ccflags.zf; 74 case ConditionTests::CvZF: 75 return ccflags.cf | ccflags.zf; 76 case ConditionTests::SF: 77 return ccflags.sf; 78 case ConditionTests::PF: 79 return ccflags.pf; 80 case ConditionTests::SxOF: 81 return ccflags.sf ^ ccflags.of; 82 case ConditionTests::SxOvZF: 83 return (ccflags.sf ^ ccflags.of) | ccflags.zf; 84 case ConditionTests::False: 85 return false; 86 case ConditionTests::NotECF: 87 return !ccflags.ecf; 88 case ConditionTests::NotEZF: 89 return !ccflags.ezf; 90 case ConditionTests::NotSZnZF: 91 return !ccflags.ezf & ccflags.zf; 92 case ConditionTests::NotMSTRZ: 93 panic("This condition is not implemented!"); 94 case ConditionTests::NotSTRZ: 95 panic("This condition is not implemented!"); 96 case ConditionTests::NotMSTRC: 97 panic("This condition is not implemented!"); 98 case ConditionTests::STRnZnEZF: 99 return !ccflags.ezf & !ccflags.zf; 100 //And no interrupts or debug traps are waiting 101 case ConditionTests::NotOF: 102 return !ccflags.of; 103 case ConditionTests::NotCF: 104 return !ccflags.cf; 105 case ConditionTests::NotZF: 106 return !ccflags.zf; 107 case ConditionTests::NotCvZF: 108 return !(ccflags.cf | ccflags.zf); 109 case ConditionTests::NotSF: 110 return !ccflags.sf; 111 case ConditionTests::NotPF: 112 return !ccflags.pf; 113 case ConditionTests::NotSxOF: 114 return !(ccflags.sf ^ ccflags.of); 115 case ConditionTests::NotSxOvZF: 116 return !((ccflags.sf ^ ccflags.of) | ccflags.zf); 117 } 118 panic("Unknown condition: %d\n", condition); 119 return true; 120 } 121} 122