static_inst.cc revision 9920:028e4da64b42
1/* 2 * Copyright (c) 2007 The Hewlett-Packard Development Company 3 * Copyright (c) 2013 Advanced Micro Devices, Inc. 4 * All rights reserved. 5 * 6 * The license below extends only to copyright in the software and shall 7 * not be construed as granting a license to any other intellectual 8 * property including but not limited to intellectual property relating 9 * to a hardware implementation of the functionality of the software 10 * licensed hereunder. You may use the software subject to the license 11 * terms below provided that you ensure that this notice is replicated 12 * unmodified and in its entirety in all distributions of the software, 13 * modified or unmodified, in source code or in binary form. 14 * 15 * Redistribution and use in source and binary forms, with or without 16 * modification, are permitted provided that the following conditions are 17 * met: redistributions of source code must retain the above copyright 18 * notice, this list of conditions and the following disclaimer; 19 * redistributions in binary form must reproduce the above copyright 20 * notice, this list of conditions and the following disclaimer in the 21 * documentation and/or other materials provided with the distribution; 22 * neither the name of the copyright holders nor the names of its 23 * contributors may be used to endorse or promote products derived from 24 * this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 27 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 28 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 29 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 30 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 31 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 32 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 33 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 34 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 35 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 36 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 37 * 38 * Authors: Gabe Black 39 */ 40 41#include "arch/x86/insts/static_inst.hh" 42#include "arch/x86/regs/segment.hh" 43#include "cpu/reg_class.hh" 44 45namespace X86ISA 46{ 47 void X86StaticInst::printMnemonic(std::ostream &os, 48 const char * mnemonic) const 49 { 50 ccprintf(os, " %s ", mnemonic); 51 } 52 53 void X86StaticInst::printMnemonic(std::ostream &os, 54 const char * instMnemonic, const char * mnemonic) const 55 { 56 ccprintf(os, " %s : %s ", instMnemonic, mnemonic); 57 } 58 59 void X86StaticInst::printSegment(std::ostream &os, int segment) const 60 { 61 switch (segment) 62 { 63 case SEGMENT_REG_ES: 64 ccprintf(os, "ES"); 65 break; 66 case SEGMENT_REG_CS: 67 ccprintf(os, "CS"); 68 break; 69 case SEGMENT_REG_SS: 70 ccprintf(os, "SS"); 71 break; 72 case SEGMENT_REG_DS: 73 ccprintf(os, "DS"); 74 break; 75 case SEGMENT_REG_FS: 76 ccprintf(os, "FS"); 77 break; 78 case SEGMENT_REG_GS: 79 ccprintf(os, "GS"); 80 break; 81 case SEGMENT_REG_HS: 82 ccprintf(os, "HS"); 83 break; 84 case SEGMENT_REG_TSL: 85 ccprintf(os, "TSL"); 86 break; 87 case SEGMENT_REG_TSG: 88 ccprintf(os, "TSG"); 89 break; 90 case SEGMENT_REG_LS: 91 ccprintf(os, "LS"); 92 break; 93 case SEGMENT_REG_MS: 94 ccprintf(os, "MS"); 95 break; 96 case SYS_SEGMENT_REG_TR: 97 ccprintf(os, "TR"); 98 break; 99 case SYS_SEGMENT_REG_IDTR: 100 ccprintf(os, "IDTR"); 101 break; 102 default: 103 panic("Unrecognized segment %d\n", segment); 104 } 105 } 106 107 void 108 X86StaticInst::printSrcReg(std::ostream &os, int reg, int size) const 109 { 110 if(_numSrcRegs > reg) 111 printReg(os, _srcRegIdx[reg], size); 112 } 113 114 void 115 X86StaticInst::printDestReg(std::ostream &os, int reg, int size) const 116 { 117 if(_numDestRegs > reg) 118 printReg(os, _destRegIdx[reg], size); 119 } 120 121 void 122 X86StaticInst::printReg(std::ostream &os, int reg, int size) const 123 { 124 assert(size == 1 || size == 2 || size == 4 || size == 8); 125 static const char * abcdFormats[9] = 126 {"", "%s", "%sx", "", "e%sx", "", "", "", "r%sx"}; 127 static const char * piFormats[9] = 128 {"", "%s", "%s", "", "e%s", "", "", "", "r%s"}; 129 static const char * longFormats[9] = 130 {"", "r%sb", "r%sw", "", "r%sd", "", "", "", "r%s"}; 131 static const char * microFormats[9] = 132 {"", "t%db", "t%dw", "", "t%dd", "", "", "", "t%d"}; 133 134 RegIndex rel_reg; 135 136 switch (regIdxToClass(reg, &rel_reg)) { 137 case IntRegClass: { 138 const char * suffix = ""; 139 bool fold = rel_reg & IntFoldBit; 140 rel_reg &= ~IntFoldBit; 141 142 if(fold) 143 suffix = "h"; 144 else if(rel_reg < 8 && size == 1) 145 suffix = "l"; 146 147 switch (rel_reg) { 148 case INTREG_RAX: 149 ccprintf(os, abcdFormats[size], "a"); 150 break; 151 case INTREG_RBX: 152 ccprintf(os, abcdFormats[size], "b"); 153 break; 154 case INTREG_RCX: 155 ccprintf(os, abcdFormats[size], "c"); 156 break; 157 case INTREG_RDX: 158 ccprintf(os, abcdFormats[size], "d"); 159 break; 160 case INTREG_RSP: 161 ccprintf(os, piFormats[size], "sp"); 162 break; 163 case INTREG_RBP: 164 ccprintf(os, piFormats[size], "bp"); 165 break; 166 case INTREG_RSI: 167 ccprintf(os, piFormats[size], "si"); 168 break; 169 case INTREG_RDI: 170 ccprintf(os, piFormats[size], "di"); 171 break; 172 case INTREG_R8W: 173 ccprintf(os, longFormats[size], "8"); 174 break; 175 case INTREG_R9W: 176 ccprintf(os, longFormats[size], "9"); 177 break; 178 case INTREG_R10W: 179 ccprintf(os, longFormats[size], "10"); 180 break; 181 case INTREG_R11W: 182 ccprintf(os, longFormats[size], "11"); 183 break; 184 case INTREG_R12W: 185 ccprintf(os, longFormats[size], "12"); 186 break; 187 case INTREG_R13W: 188 ccprintf(os, longFormats[size], "13"); 189 break; 190 case INTREG_R14W: 191 ccprintf(os, longFormats[size], "14"); 192 break; 193 case INTREG_R15W: 194 ccprintf(os, longFormats[size], "15"); 195 break; 196 default: 197 ccprintf(os, microFormats[size], rel_reg - NUM_INTREGS); 198 } 199 ccprintf(os, suffix); 200 break; 201 } 202 203 case FloatRegClass: { 204 if (rel_reg < NumMMXRegs) { 205 ccprintf(os, "%%mmx%d", rel_reg); 206 return; 207 } 208 rel_reg -= NumMMXRegs; 209 if (rel_reg < NumXMMRegs * 2) { 210 ccprintf(os, "%%xmm%d_%s", rel_reg / 2, 211 (rel_reg % 2) ? "high": "low"); 212 return; 213 } 214 rel_reg -= NumXMMRegs * 2; 215 if (rel_reg < NumMicroFpRegs) { 216 ccprintf(os, "%%ufp%d", rel_reg); 217 return; 218 } 219 rel_reg -= NumMicroFpRegs; 220 ccprintf(os, "%%st(%d)", rel_reg); 221 break; 222 } 223 224 case CCRegClass: 225 ccprintf(os, "%%cc%d", rel_reg); 226 break; 227 228 case MiscRegClass: 229 switch (rel_reg) { 230 default: 231 ccprintf(os, "%%ctrl%d", rel_reg); 232 } 233 break; 234 } 235 } 236 237 void X86StaticInst::printMem(std::ostream &os, uint8_t segment, 238 uint8_t scale, RegIndex index, RegIndex base, 239 uint64_t disp, uint8_t addressSize, bool rip) const 240 { 241 bool someAddr = false; 242 printSegment(os, segment); 243 os << ":["; 244 if (rip) { 245 os << "rip"; 246 someAddr = true; 247 } else { 248 if (scale != 0 && index != ZeroReg) 249 { 250 if(scale != 1) 251 ccprintf(os, "%d*", scale); 252 printReg(os, index, addressSize); 253 someAddr = true; 254 } 255 if (base != ZeroReg) 256 { 257 if(someAddr) 258 os << " + "; 259 printReg(os, base, addressSize); 260 someAddr = true; 261 } 262 } 263 if (disp != 0) 264 { 265 if(someAddr) 266 os << " + "; 267 ccprintf(os, "%#x", disp); 268 someAddr = true; 269 } 270 if (!someAddr) 271 os << "0"; 272 os << "]"; 273 } 274 275 std::string X86StaticInst::generateDisassembly(Addr pc, 276 const SymbolTable *symtab) const 277 { 278 std::stringstream ss; 279 280 printMnemonic(ss, mnemonic); 281 282 return ss.str(); 283 } 284} 285