microldstop.hh revision 4804
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 63namespace X86ISA 64{ 65 /** 66 * Base class for load and store ops 67 */ 68 class LdStOp : public X86MicroopBase 69 { 70 protected: 71 const uint8_t scale; 72 const RegIndex index; 73 const RegIndex base; 74 const uint64_t disp; 75 const uint8_t segment; 76 const RegIndex data; 77 const uint8_t dataSize; 78 const uint8_t addressSize; 79 RegIndex foldOBit, foldABit; 80 81 //Constructor 82 LdStOp(ExtMachInst _machInst, 83 const char * mnem, const char * _instMnem, 84 bool isMicro, bool isDelayed, bool isFirst, bool isLast, 85 uint8_t _scale, RegIndex _index, RegIndex _base, 86 uint64_t _disp, uint8_t _segment, 87 RegIndex _data, 88 uint8_t _dataSize, uint8_t _addressSize, 89 OpClass __opClass) : 90 X86MicroopBase(machInst, mnem, _instMnem, 91 isMicro, isDelayed, isFirst, isLast, __opClass), 92 scale(_scale), index(_index), base(_base), 93 disp(_disp), segment(_segment), 94 data(_data), 95 dataSize(_dataSize), addressSize(_addressSize) 96 { 97 foldOBit = (dataSize == 1 && !_machInst.rex.present) ? 1 << 6 : 0; 98 foldABit = 99 (addressSize == 1 && !_machInst.rex.present) ? 1 << 6 : 0; 100 } 101 102 std::string generateDisassembly(Addr pc, 103 const SymbolTable *symtab) const; 104 105 template<class Context, class MemType> 106 Fault read(Context *xc, Addr EA, MemType & Mem, unsigned flags) const 107 { 108 Fault fault = NoFault; 109 int size = dataSize; 110 Addr alignedEA = EA & ~(dataSize - 1); 111 if (EA != alignedEA) 112 size *= 2; 113 switch(size) 114 { 115 case 1: 116 fault = xc->read(alignedEA, (uint8_t&)Mem, flags); 117 break; 118 case 2: 119 fault = xc->read(alignedEA, (uint16_t&)Mem, flags); 120 break; 121 case 4: 122 fault = xc->read(alignedEA, (uint32_t&)Mem, flags); 123 break; 124 case 8: 125 fault = xc->read(alignedEA, (uint64_t&)Mem, flags); 126 break; 127 default: 128 panic("Bad operand size %d!\n", size); 129 } 130 return fault; 131 } 132 133 template<class Context, class MemType> 134 Fault write(Context *xc, MemType & Mem, Addr EA, unsigned flags) const 135 { 136 Fault fault = NoFault; 137 int size = dataSize; 138 Addr alignedEA = EA & ~(dataSize - 1); 139 if (EA != alignedEA) 140 size *= 2; 141 switch(size) 142 { 143 case 1: 144 fault = xc->write((uint8_t&)Mem, alignedEA, flags, 0); 145 break; 146 case 2: 147 fault = xc->write((uint16_t&)Mem, alignedEA, flags, 0); 148 break; 149 case 4: 150 fault = xc->write((uint32_t&)Mem, alignedEA, flags, 0); 151 break; 152 case 8: 153 fault = xc->write((uint64_t&)Mem, alignedEA, flags, 0); 154 break; 155 default: 156 panic("Bad operand size %d!\n", size); 157 } 158 return fault; 159 } 160 }; 161} 162 163#endif //__ARCH_X86_INSTS_MICROLDSTOP_HH__ 164