ldstflags.hh revision 6132
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 static const Request::FlagsType SegmentFlagMask = mask(4); 68 static 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, RegIndex _index, RegIndex _base, 97 uint64_t _disp, uint8_t _segment, 98 RegIndex _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), base(_base), 105 disp(_disp), segment(_segment), 106 data(_data), 107 dataSize(_dataSize), addressSize(_addressSize), 108 memFlags(_memFlags | _segment) 109 { 110 foldOBit = (dataSize == 1 && !_machInst.rex.present) ? 1 << 6 : 0; 111 foldABit = 112 (addressSize == 1 && !_machInst.rex.present) ? 1 << 6 : 0; 113 } 114 115 std::string generateDisassembly(Addr pc, 116 const SymbolTable *symtab) const; 117 118 template<class Context, class MemType> 119 Fault read(Context *xc, Addr EA, MemType & Mem, unsigned flags) const 120 { 121 Fault fault = NoFault; 122 switch(dataSize) 123 { 124 case 1: 125 fault = xc->read(EA, (uint8_t&)Mem, flags); 126 break; 127 case 2: 128 fault = xc->read(EA, (uint16_t&)Mem, flags); 129 break; 130 case 4: 131 fault = xc->read(EA, (uint32_t&)Mem, flags); 132 break; 133 case 8: 134 fault = xc->read(EA, (uint64_t&)Mem, flags); 135 break; 136 default: 137 panic("Bad operand size %d for read at %#x.\n", dataSize, EA); 138 } 139 return fault; 140 } 141 142 template<class Context, class MemType> 143 Fault write(Context *xc, MemType & Mem, Addr EA, unsigned flags) const 144 { 145 Fault fault = NoFault; 146 switch(dataSize) 147 { 148 case 1: 149 fault = xc->write((uint8_t&)Mem, EA, flags, 0); 150 break; 151 case 2: 152 fault = xc->write((uint16_t&)Mem, EA, flags, 0); 153 break; 154 case 4: 155 fault = xc->write((uint32_t&)Mem, EA, flags, 0); 156 break; 157 case 8: 158 fault = xc->write((uint64_t&)Mem, EA, flags, 0); 159 break; 160 default: 161 panic("Bad operand size %d for write at %#x.\n", dataSize, EA); 162 } 163 return fault; 164 } 165 166 uint64_t 167 get(PacketPtr pkt) const 168 { 169 switch(dataSize) 170 { 171 case 1: 172 return pkt->get<uint8_t>(); 173 case 2: 174 return pkt->get<uint16_t>(); 175 case 4: 176 return pkt->get<uint32_t>(); 177 case 8: 178 return pkt->get<uint64_t>(); 179 default: 180 panic("Bad operand size %d for read at %#x.\n", 181 dataSize, pkt->getAddr()); 182 } 183 } 184 }; 185} 186 187#endif //__ARCH_X86_INSTS_MICROLDSTOP_HH__ 188