static_inst.cc revision 11793
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 43#include "arch/x86/regs/segment.hh" 44#include "cpu/reg_class.hh" 45 46namespace X86ISA 47{ 48 void X86StaticInst::printMnemonic(std::ostream &os, 49 const char * mnemonic) const 50 { 51 ccprintf(os, " %s ", mnemonic); 52 } 53 54 void X86StaticInst::printMnemonic(std::ostream &os, 55 const char * instMnemonic, const char * mnemonic) const 56 { 57 ccprintf(os, " %s : %s ", instMnemonic, mnemonic); 58 } 59 60 void X86StaticInst::printSegment(std::ostream &os, int segment) const 61 { 62 switch (segment) 63 { 64 case SEGMENT_REG_ES: 65 ccprintf(os, "ES"); 66 break; 67 case SEGMENT_REG_CS: 68 ccprintf(os, "CS"); 69 break; 70 case SEGMENT_REG_SS: 71 ccprintf(os, "SS"); 72 break; 73 case SEGMENT_REG_DS: 74 ccprintf(os, "DS"); 75 break; 76 case SEGMENT_REG_FS: 77 ccprintf(os, "FS"); 78 break; 79 case SEGMENT_REG_GS: 80 ccprintf(os, "GS"); 81 break; 82 case SEGMENT_REG_HS: 83 ccprintf(os, "HS"); 84 break; 85 case SEGMENT_REG_TSL: 86 ccprintf(os, "TSL"); 87 break; 88 case SEGMENT_REG_TSG: 89 ccprintf(os, "TSG"); 90 break; 91 case SEGMENT_REG_LS: 92 ccprintf(os, "LS"); 93 break; 94 case SEGMENT_REG_MS: 95 ccprintf(os, "MS"); 96 break; 97 case SYS_SEGMENT_REG_TR: 98 ccprintf(os, "TR"); 99 break; 100 case SYS_SEGMENT_REG_IDTR: 101 ccprintf(os, "IDTR"); 102 break; 103 default: 104 panic("Unrecognized segment %d\n", segment); 105 } 106 } 107 108 void 109 X86StaticInst::printSrcReg(std::ostream &os, int reg, int size) const 110 { 111 if (_numSrcRegs > reg) 112 printReg(os, _srcRegIdx[reg], size); 113 } 114 115 void 116 X86StaticInst::printDestReg(std::ostream &os, int reg, int size) const 117 { 118 if (_numDestRegs > reg) 119 printReg(os, _destRegIdx[reg], size); 120 } 121 122 void 123 X86StaticInst::printReg(std::ostream &os, int reg, int size) const 124 { 125 assert(size == 1 || size == 2 || size == 4 || size == 8); 126 static const char * abcdFormats[9] = 127 {"", "%s", "%sx", "", "e%sx", "", "", "", "r%sx"}; 128 static const char * piFormats[9] = 129 {"", "%s", "%s", "", "e%s", "", "", "", "r%s"}; 130 static const char * longFormats[9] = 131 {"", "r%sb", "r%sw", "", "r%sd", "", "", "", "r%s"}; 132 static const char * microFormats[9] = 133 {"", "t%db", "t%dw", "", "t%dd", "", "", "", "t%d"}; 134 135 RegIndex rel_reg; 136 137 switch (regIdxToClass(reg, &rel_reg)) { 138 case IntRegClass: { 139 const char * suffix = ""; 140 bool fold = rel_reg & IntFoldBit; 141 rel_reg &= ~IntFoldBit; 142 143 if (fold) 144 suffix = "h"; 145 else if (rel_reg < 8 && size == 1) 146 suffix = "l"; 147 148 switch (rel_reg) { 149 case INTREG_RAX: 150 ccprintf(os, abcdFormats[size], "a"); 151 break; 152 case INTREG_RBX: 153 ccprintf(os, abcdFormats[size], "b"); 154 break; 155 case INTREG_RCX: 156 ccprintf(os, abcdFormats[size], "c"); 157 break; 158 case INTREG_RDX: 159 ccprintf(os, abcdFormats[size], "d"); 160 break; 161 case INTREG_RSP: 162 ccprintf(os, piFormats[size], "sp"); 163 break; 164 case INTREG_RBP: 165 ccprintf(os, piFormats[size], "bp"); 166 break; 167 case INTREG_RSI: 168 ccprintf(os, piFormats[size], "si"); 169 break; 170 case INTREG_RDI: 171 ccprintf(os, piFormats[size], "di"); 172 break; 173 case INTREG_R8W: 174 ccprintf(os, longFormats[size], "8"); 175 break; 176 case INTREG_R9W: 177 ccprintf(os, longFormats[size], "9"); 178 break; 179 case INTREG_R10W: 180 ccprintf(os, longFormats[size], "10"); 181 break; 182 case INTREG_R11W: 183 ccprintf(os, longFormats[size], "11"); 184 break; 185 case INTREG_R12W: 186 ccprintf(os, longFormats[size], "12"); 187 break; 188 case INTREG_R13W: 189 ccprintf(os, longFormats[size], "13"); 190 break; 191 case INTREG_R14W: 192 ccprintf(os, longFormats[size], "14"); 193 break; 194 case INTREG_R15W: 195 ccprintf(os, longFormats[size], "15"); 196 break; 197 default: 198 ccprintf(os, microFormats[size], rel_reg - NUM_INTREGS); 199 } 200 ccprintf(os, suffix); 201 break; 202 } 203 204 case FloatRegClass: { 205 if (rel_reg < NumMMXRegs) { 206 ccprintf(os, "%%mmx%d", rel_reg); 207 return; 208 } 209 rel_reg -= NumMMXRegs; 210 if (rel_reg < NumXMMRegs * 2) { 211 ccprintf(os, "%%xmm%d_%s", rel_reg / 2, 212 (rel_reg % 2) ? "high": "low"); 213 return; 214 } 215 rel_reg -= NumXMMRegs * 2; 216 if (rel_reg < NumMicroFpRegs) { 217 ccprintf(os, "%%ufp%d", rel_reg); 218 return; 219 } 220 rel_reg -= NumMicroFpRegs; 221 ccprintf(os, "%%st(%d)", rel_reg); 222 break; 223 } 224 225 case CCRegClass: 226 ccprintf(os, "%%cc%d", rel_reg); 227 break; 228 229 case MiscRegClass: 230 switch (rel_reg) { 231 default: 232 ccprintf(os, "%%ctrl%d", rel_reg); 233 } 234 break; 235 } 236 } 237 238 void X86StaticInst::printMem(std::ostream &os, uint8_t segment, 239 uint8_t scale, RegIndex index, RegIndex base, 240 uint64_t disp, uint8_t addressSize, bool rip) const 241 { 242 bool someAddr = false; 243 printSegment(os, segment); 244 os << ":["; 245 if (rip) { 246 os << "rip"; 247 someAddr = true; 248 } else { 249 if (scale != 0 && index != ZeroReg) 250 { 251 if (scale != 1) 252 ccprintf(os, "%d*", scale); 253 printReg(os, index, addressSize); 254 someAddr = true; 255 } 256 if (base != ZeroReg) 257 { 258 if (someAddr) 259 os << " + "; 260 printReg(os, base, addressSize); 261 someAddr = true; 262 } 263 } 264 if (disp != 0) 265 { 266 if (someAddr) 267 os << " + "; 268 ccprintf(os, "%#x", disp); 269 someAddr = true; 270 } 271 if (!someAddr) 272 os << "0"; 273 os << "]"; 274 } 275 276 std::string X86StaticInst::generateDisassembly(Addr pc, 277 const SymbolTable *symtab) const 278 { 279 std::stringstream ss; 280 281 printMnemonic(ss, mnemonic); 282 283 return ss.str(); 284 } 285} 286