ldstflags.hh revision 6622
113521Sgabeblack@google.com/* 213521Sgabeblack@google.com * Copyright (c) 2007 The Hewlett-Packard Development Company 313521Sgabeblack@google.com * All rights reserved. 413521Sgabeblack@google.com * 513521Sgabeblack@google.com * Redistribution and use of this software in source and binary forms, 613521Sgabeblack@google.com * with or without modification, are permitted provided that the 713521Sgabeblack@google.com * following conditions are met: 813521Sgabeblack@google.com * 913521Sgabeblack@google.com * The software must be used only for Non-Commercial Use which means any 1013521Sgabeblack@google.com * use which is NOT directed to receiving any direct monetary 1113521Sgabeblack@google.com * compensation for, or commercial advantage from such use. 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IN NO EVENT SHALL THE COPYRIGHT 4713521Sgabeblack@google.com * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 4813521Sgabeblack@google.com * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 4913521Sgabeblack@google.com * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 5013521Sgabeblack@google.com * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 5113521Sgabeblack@google.com * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 5213521Sgabeblack@google.com * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 5313521Sgabeblack@google.com * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 5413521Sgabeblack@google.com * 5513521Sgabeblack@google.com * Authors: Gabe Black 5613521Sgabeblack@google.com */ 5713521Sgabeblack@google.com 5813521Sgabeblack@google.com#ifndef __ARCH_X86_INSTS_MICROLDSTOP_HH__ 5913521Sgabeblack@google.com#define __ARCH_X86_INSTS_MICROLDSTOP_HH__ 6013521Sgabeblack@google.com 6113521Sgabeblack@google.com#include "arch/x86/insts/microop.hh" 6213525Sgabeblack@google.com#include "mem/packet.hh" 6313525Sgabeblack@google.com#include "mem/request.hh" 6413525Sgabeblack@google.com 6513525Sgabeblack@google.comnamespace X86ISA 6613525Sgabeblack@google.com{ 6713522Sgabeblack@google.com const Request::FlagsType SegmentFlagMask = mask(4); 6813521Sgabeblack@google.com const int FlagShift = 4; 6913521Sgabeblack@google.com enum FlagBit { 7013521Sgabeblack@google.com CPL0FlagBit = 1, 7113521Sgabeblack@google.com AddrSizeFlagBit = 2, 7213521Sgabeblack@google.com StoreCheck = 4 7313521Sgabeblack@google.com }; 7413521Sgabeblack@google.com 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