static_inst.hh revision 8232:b28d06a175be
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#ifndef __ARCH_X86_INSTS_STATICINST_HH__ 41#define __ARCH_X86_INSTS_STATICINST_HH__ 42 43#include "base/trace.hh" 44#include "cpu/static_inst.hh" 45#include "debug/X86.hh" 46 47namespace X86ISA 48{ 49 /** 50 * Class for register indices passed to instruction constructors. Using a 51 * wrapper struct for these lets take advantage of the compiler's type 52 * checking. 53 */ 54 struct InstRegIndex 55 { 56 RegIndex idx; 57 explicit InstRegIndex(RegIndex _idx) : idx(_idx) 58 {} 59 }; 60 61 /** 62 * Base class for all X86 static instructions. 63 */ 64 65 class X86StaticInst : public StaticInst 66 { 67 protected: 68 // Constructor. 69 X86StaticInst(const char *mnem, 70 ExtMachInst _machInst, OpClass __opClass) 71 : StaticInst(mnem, _machInst, __opClass) 72 { 73 } 74 75 std::string generateDisassembly(Addr pc, 76 const SymbolTable *symtab) const; 77 78 void printMnemonic(std::ostream &os, const char * mnemonic) const; 79 void printMnemonic(std::ostream &os, const char * instMnemonic, 80 const char * mnemonic) const; 81 82 void printSegment(std::ostream &os, int segment) const; 83 84 void printReg(std::ostream &os, int reg, int size) const; 85 void printSrcReg(std::ostream &os, int reg, int size) const; 86 void printDestReg(std::ostream &os, int reg, int size) const; 87 void printMem(std::ostream &os, uint8_t segment, 88 uint8_t scale, RegIndex index, RegIndex base, 89 uint64_t disp, uint8_t addressSize, bool rip) const; 90 91 inline uint64_t merge(uint64_t into, uint64_t val, int size) const 92 { 93 X86IntReg reg = into; 94 if(_destRegIdx[0] & IntFoldBit) 95 { 96 reg.H = val; 97 return reg; 98 } 99 switch(size) 100 { 101 case 1: 102 reg.L = val; 103 break; 104 case 2: 105 reg.X = val; 106 break; 107 case 4: 108 //XXX Check if this should be zeroed or sign extended 109 reg = 0; 110 reg.E = val; 111 break; 112 case 8: 113 reg.R = val; 114 break; 115 default: 116 panic("Tried to merge with unrecognized size %d.\n", size); 117 } 118 return reg; 119 } 120 121 inline uint64_t pick(uint64_t from, int idx, int size) const 122 { 123 X86IntReg reg = from; 124 DPRINTF(X86, "Picking with size %d\n", size); 125 if(_srcRegIdx[idx] & IntFoldBit) 126 return reg.H; 127 switch(size) 128 { 129 case 1: 130 return reg.L; 131 case 2: 132 return reg.X; 133 case 4: 134 return reg.E; 135 case 8: 136 return reg.R; 137 default: 138 panic("Tried to pick with unrecognized size %d.\n", size); 139 } 140 } 141 142 inline int64_t signedPick(uint64_t from, int idx, int size) const 143 { 144 X86IntReg reg = from; 145 DPRINTF(X86, "Picking with size %d\n", size); 146 if(_srcRegIdx[idx] & IntFoldBit) 147 return reg.SH; 148 switch(size) 149 { 150 case 1: 151 return reg.SL; 152 case 2: 153 return reg.SX; 154 case 4: 155 return reg.SE; 156 case 8: 157 return reg.SR; 158 default: 159 panic("Tried to pick with unrecognized size %d.\n", size); 160 } 161 } 162 163 void 164 advancePC(PCState &pcState) const 165 { 166 pcState.advance(); 167 } 168 }; 169} 170 171#endif //__ARCH_X86_INSTS_STATICINST_HH__ 172