ldstflags.hh revision 6622
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#ifndef __ARCH_X86_INSTS_MICROLDSTOP_HH__ 59#define __ARCH_X86_INSTS_MICROLDSTOP_HH__ 60 61#include "arch/x86/insts/microop.hh" 62#include "mem/packet.hh" 63#include "mem/request.hh" 64 65namespace X86ISA 66{ 67 const Request::FlagsType SegmentFlagMask = mask(4); 68 const int FlagShift = 4; 69 enum FlagBit { 70 CPL0FlagBit = 1, 71 AddrSizeFlagBit = 2, 72 StoreCheck = 4 73 }; 74 75 /** 76 * Base class for load and store ops 77 */ 78 class LdStOp : public X86MicroopBase 79 { 80 protected: 81 const uint8_t scale; 82 const RegIndex index; 83 const RegIndex base; 84 const uint64_t disp; 85 const uint8_t segment; 86 const RegIndex data; 87 const uint8_t dataSize; 88 const uint8_t addressSize; 89 const Request::FlagsType memFlags; 90 RegIndex foldOBit, foldABit; 91 92 //Constructor 93 LdStOp(ExtMachInst _machInst, 94 const char * mnem, const char * _instMnem, 95 bool isMicro, bool isDelayed, bool isFirst, bool isLast, 96 uint8_t _scale, InstRegIndex _index, InstRegIndex _base, 97 uint64_t _disp, InstRegIndex _segment, 98 InstRegIndex _data, 99 uint8_t _dataSize, uint8_t _addressSize, 100 Request::FlagsType _memFlags, 101 OpClass __opClass) : 102 X86MicroopBase(machInst, mnem, _instMnem, 103 isMicro, isDelayed, isFirst, isLast, __opClass), 104 scale(_scale), index(_index.idx), base(_base.idx), 105 disp(_disp), segment(_segment.idx), 106 data(_data.idx), 107 dataSize(_dataSize), addressSize(_addressSize), 108 memFlags(_memFlags | _segment.idx) 109 { 110 assert(_segment.idx < NUM_SEGMENTREGS); 111 foldOBit = (dataSize == 1 && !_machInst.rex.present) ? 1 << 6 : 0; 112 foldABit = 113 (addressSize == 1 && !_machInst.rex.present) ? 1 << 6 : 0; 114 } 115 116 std::string generateDisassembly(Addr pc, 117 const SymbolTable *symtab) const; 118 119 template<class Context, class MemType> 120 Fault read(Context *xc, Addr EA, MemType & Mem, unsigned flags) const 121 { 122 Fault fault = NoFault; 123 switch(dataSize) 124 { 125 case 1: 126 fault = xc->read(EA, (uint8_t&)Mem, flags); 127 break; 128 case 2: 129 fault = xc->read(EA, (uint16_t&)Mem, flags); 130 break; 131 case 4: 132 fault = xc->read(EA, (uint32_t&)Mem, flags); 133 break; 134 case 8: 135 fault = xc->read(EA, (uint64_t&)Mem, flags); 136 break; 137 default: 138 panic("Bad operand size %d for read at %#x.\n", dataSize, EA); 139 } 140 return fault; 141 } 142 143 template<class Context, class MemType> 144 Fault write(Context *xc, MemType & Mem, Addr EA, unsigned flags) const 145 { 146 Fault fault = NoFault; 147 switch(dataSize) 148 { 149 case 1: 150 fault = xc->write((uint8_t&)Mem, EA, flags, 0); 151 break; 152 case 2: 153 fault = xc->write((uint16_t&)Mem, EA, flags, 0); 154 break; 155 case 4: 156 fault = xc->write((uint32_t&)Mem, EA, flags, 0); 157 break; 158 case 8: 159 fault = xc->write((uint64_t&)Mem, EA, flags, 0); 160 break; 161 default: 162 panic("Bad operand size %d for write at %#x.\n", dataSize, EA); 163 } 164 return fault; 165 } 166 167 uint64_t 168 get(PacketPtr pkt) const 169 { 170 switch(dataSize) 171 { 172 case 1: 173 return pkt->get<uint8_t>(); 174 case 2: 175 return pkt->get<uint16_t>(); 176 case 4: 177 return pkt->get<uint32_t>(); 178 case 8: 179 return pkt->get<uint64_t>(); 180 default: 181 panic("Bad operand size %d for read at %#x.\n", 182 dataSize, pkt->getAddr()); 183 } 184 } 185 }; 186} 187 188#endif //__ARCH_X86_INSTS_MICROLDSTOP_HH__ 189