one_byte_opcodes.isa revision 5174:73a760aa0129
19380SAndreas.Sandberg@ARM.com// Copyright (c) 2007 The Hewlett-Packard Development Company 28150SAli.Saidi@ARM.com// All rights reserved. 38150SAli.Saidi@ARM.com// 49380SAndreas.Sandberg@ARM.com// Redistribution and use of this software in source and binary forms, 59380SAndreas.Sandberg@ARM.com// with or without modification, are permitted provided that the 69380SAndreas.Sandberg@ARM.com// following conditions are met: 79380SAndreas.Sandberg@ARM.com// 89380SAndreas.Sandberg@ARM.com// The software must be used only for Non-Commercial Use which means any 99380SAndreas.Sandberg@ARM.com// use which is NOT directed to receiving any direct monetary 109380SAndreas.Sandberg@ARM.com// compensation for, or commercial advantage from such use. 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Derivatives of the software may be shared with 369380SAndreas.Sandberg@ARM.com// others provided: (i) the others agree to abide by the list of 378150SAli.Saidi@ARM.com// conditions herein which includes the Non-Commercial Use restrictions; 388150SAli.Saidi@ARM.com// and (ii) such Derivatives of the software include the above copyright 399380SAndreas.Sandberg@ARM.com// notice to acknowledge the contribution from this software where 4011682Sandreas.hansson@arm.com// applicable, this list of conditions and the disclaimer below. 418150SAli.Saidi@ARM.com// 429380SAndreas.Sandberg@ARM.com// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 4311837Swendy.elsasser@arm.com// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 4410336Sandreas.hansson@arm.com// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 45// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 46// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 47// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 48// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 49// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 50// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 51// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 52// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 53// 54// Authors: Gabe Black 55 56//////////////////////////////////////////////////////////////////// 57// 58// Decode the one byte opcodes 59// 60 610x1: decode OPCODE_OP_TOP5 { 62 format Inst { 63 0x00: decode OPCODE_OP_BOTTOM3 { 64 0x6: decode MODE_SUBMODE { 65 0x0: UD2(); 66 default: WarnUnimpl::push_ES(); 67 } 68 0x7: decode MODE_SUBMODE { 69 0x0: UD2(); 70 default: WarnUnimpl::pop_ES(); 71 } 72 default: MultiInst::ADD(OPCODE_OP_BOTTOM3, 73 [Eb,Gb], [Ev,Gv], 74 [Gb,Eb], [Gv,Ev], 75 [rAb,Ib], [rAv,Iz]); 76 } 77 0x01: decode OPCODE_OP_BOTTOM3 { 78 0x6: decode MODE_SUBMODE { 79 0x0: UD2(); 80 default: WarnUnimpl::push_CS(); 81 } 82 //Any time this is seen, it should generate a two byte opcode 83 0x7: M5InternalError::error( 84 {{"Saw a one byte opcode whose value was 0x0F!"}}); 85 default: MultiInst::OR(OPCODE_OP_BOTTOM3, 86 [Eb,Gb], [Ev,Gv], 87 [Gb,Eb], [Gv,Ev], 88 [rAb,Ib], [rAv,Iz]); 89 } 90 0x02: decode OPCODE_OP_BOTTOM3 { 91 0x6: decode MODE_SUBMODE { 92 0x0: UD2(); 93 default: WarnUnimpl::push_SS(); 94 } 95 0x7: decode MODE_SUBMODE { 96 0x0: UD2(); 97 default: WarnUnimpl::pop_SS(); 98 } 99 default: MultiInst::ADC(OPCODE_OP_BOTTOM3, 100 [Eb,Gb], [Ev,Gv], 101 [Gb,Eb], [Gv,Ev], 102 [rAb,Ib], [rAv,Iz]); 103 } 104 0x03: decode OPCODE_OP_BOTTOM3 { 105 0x6: decode MODE_SUBMODE { 106 0x0: UD2(); 107 default: WarnUnimpl::push_DS(); 108 } 109 0x7: decode MODE_SUBMODE { 110 0x0: UD2(); 111 default: WarnUnimpl::pop_DS(); 112 } 113 default: MultiInst::SBB(OPCODE_OP_BOTTOM3, 114 [Eb,Gb], [Ev,Gv], 115 [Gb,Eb], [Gv,Ev], 116 [rAb,Ib], [rAv,Iz]); 117 } 118 0x04: decode OPCODE_OP_BOTTOM3 { 119 0x6: M5InternalError::error( 120 {{"Tried to execute the ES segment override prefix!"}}); 121 0x7: decode MODE_SUBMODE { 122 0x0: UD2(); 123 default: WarnUnimpl::daa(); 124 } 125 default: MultiInst::AND(OPCODE_OP_BOTTOM3, 126 [Eb,Gb], [Ev,Gv], 127 [Gb,Eb], [Gv,Ev], 128 [rAb,Ib], [rAv,Iz]); 129 } 130 0x05: decode OPCODE_OP_BOTTOM3 { 131 0x6: M5InternalError::error( 132 {{"Tried to execute the CS segment override prefix!"}}); 133 0x7: decode MODE_SUBMODE { 134 0x0: UD2(); 135 default: WarnUnimpl::das(); 136 } 137 default: MultiInst::SUB(OPCODE_OP_BOTTOM3, 138 [Eb,Gb], [Ev,Gv], 139 [Gb,Eb], [Gv,Ev], 140 [rAb,Ib], [rAv,Iz]); 141 } 142 0x06: decode OPCODE_OP_BOTTOM3 { 143 0x6: M5InternalError::error( 144 {{"Tried to execute the SS segment override prefix!"}}); 145 0x7: decode MODE_SUBMODE { 146 0x0: UD2(); 147 default: WarnUnimpl::aaa(); 148 } 149 default: MultiInst::XOR(OPCODE_OP_BOTTOM3, 150 [Eb,Gb], [Ev,Gv], 151 [Gb,Eb], [Gv,Ev], 152 [rAb,Ib], [rAv,Iz]); 153 } 154 0x07: decode OPCODE_OP_BOTTOM3 { 155 0x6: M5InternalError::error( 156 {{"Tried to execute the DS segment override prefix!"}}); 157 0x7: decode MODE_SUBMODE { 158 0x0: UD2(); 159 default: WarnUnimpl::aas(); 160 } 161 default: MultiInst::CMP(OPCODE_OP_BOTTOM3, 162 [Eb,Gb], [Ev,Gv], 163 [Gb,Eb], [Gv,Ev], 164 [rAb,Ib], [rAv,Iz]); 165 } 166 0x08: decode MODE_SUBMODE { 167 0x0: M5InternalError::error ( 168 {{"Tried to execute an REX prefix!"}}); 169 default: INC(Bv); 170 } 171 0x09: decode MODE_SUBMODE { 172 0x0: M5InternalError::error ( 173 {{"Tried to execute an REX prefix!"}}); 174 default: DEC(Bv); 175 } 176 0x0A: PUSH(Bv); 177 0x0B: POP(Bv); 178 0x0C: decode OPCODE_OP_BOTTOM3 { 179 0x0: decode MODE_SUBMODE { 180 0x0: UD2(); 181 default: PUSHA(); 182 } 183 0x1: decode MODE_SUBMODE { 184 0x0: UD2(); 185 default: POPA(); 186 } 187 0x2: decode MODE_SUBMODE { 188 0x0: UD2(); 189 default: BOUND(Gv,Mv); 190 } 191 0x3: decode MODE_SUBMODE { 192 //The second operand should really be of size "d", but it's 193 //set to "v" in order to have a consistent register size. 194 //This shouldn't affect behavior. 195 0x0: MOVSXD(Gv,Ev); 196 default: WarnUnimpl::arpl_Ew_Gw(); 197 } 198 0x4: M5InternalError::error( 199 {{"Tried to execute the FS segment override prefix!"}}); 200 0x5: M5InternalError::error( 201 {{"Tried to execute the GS segment override prefix!"}}); 202 0x6: M5InternalError::error( 203 {{"Tried to execute the operand size override prefix!"}}); 204 0x7: M5InternalError::error( 205 {{"Tried to execute the DS address size override prefix!"}}); 206 } 207 0x0D: decode OPCODE_OP_BOTTOM3 { 208 0x0: PUSH(Iz); 209 0x1: IMUL(Gv,Ev,Iz); 210 0x2: PUSH(Ib); 211 0x3: IMUL(Gv,Ev,Ib); 212 0x4: StringInst::INS(Yb,rD); 213 0x5: StringInst::INS(Yz,rD); 214 0x6: StringInst::OUTS(rD,Xb); 215 0x7: StringInst::OUTS(rD,Xz); 216 } 217 0x0E: decode OPCODE_OP_BOTTOM3 { 218 0x0: JO(Jb); 219 0x1: JNO(Jb); 220 0x2: JB(Jb); 221 0x3: JNB(Jb); 222 0x4: JZ(Jb); 223 0x5: JNZ(Jb); 224 0x6: JBE(Jb); 225 0x7: JNBE(Jb); 226 } 227 0x0F: decode OPCODE_OP_BOTTOM3 { 228 0x0: JS(Jb); 229 0x1: JNS(Jb); 230 0x2: JP(Jb); 231 0x3: JNP(Jb); 232 0x4: JL(Jb); 233 0x5: JNL(Jb); 234 0x6: JLE(Jb); 235 0x7: JNLE(Jb); 236 } 237 0x10: decode OPCODE_OP_BOTTOM3 { 238 //0x0: group1_Eb_Ib(); 239 0x0: decode MODRM_REG { 240 0x0: ADD(Eb,Ib); 241 0x1: OR(Eb,Ib); 242 0x2: ADC(Eb,Ib); 243 0x3: SBB(Eb,Ib); 244 0x4: AND(Eb,Ib); 245 0x5: SUB(Eb,Ib); 246 0x6: XOR(Eb,Ib); 247 0x7: CMP(Eb,Ib); 248 } 249 //0x1: group1_Ev_Iz(); 250 0x1: decode MODRM_REG { 251 0x0: ADD(Ev,Iz); 252 0x1: OR(Ev,Iz); 253 0x2: ADC(Ev,Iz); 254 0x3: SBB(Ev,Iz); 255 0x4: AND(Ev,Iz); 256 0x5: SUB(Ev,Iz); 257 0x6: XOR(Ev,Iz); 258 0x7: CMP(Ev,Iz); 259 } 260 0x2: decode MODE_SUBMODE { 261 0x0: UD2(); 262 //default: group1_Eb_Ib(); 263 default: decode MODRM_REG { 264 0x0: ADD(Eb,Ib); 265 0x1: OR(Eb,Ib); 266 0x2: ADC(Eb,Ib); 267 0x3: SBB(Eb,Ib); 268 0x4: AND(Eb,Ib); 269 0x5: SUB(Eb,Ib); 270 0x6: XOR(Eb,Ib); 271 0x7: CMP(Eb,Ib); 272 } 273 } 274 //0x3: group1_Ev_Ib(); 275 0x3: decode MODRM_REG { 276 0x0: ADD(Ev,Ib); 277 0x1: OR(Ev,Ib); 278 0x2: ADC(Ev,Ib); 279 0x3: SBB(Ev,Ib); 280 0x4: AND(Ev,Ib); 281 0x5: SUB(Ev,Ib); 282 0x6: XOR(Ev,Ib); 283 0x7: CMP(Ev,Ib); 284 } 285 0x4: TEST(Eb,Gb); 286 0x5: TEST(Ev,Gv); 287 0x6: XCHG(Eb,Gb); 288 0x7: XCHG(Ev,Gv); 289 } 290 0x11: decode OPCODE_OP_BOTTOM3 { 291 0x0: MOV(Eb,Gb); 292 0x1: MOV(Ev,Gv); 293 0x2: MOV(Gb,Eb); 294 0x3: MOV(Gv,Ev); 295 0x4: WarnUnimpl::mov_MwRv_Sw(); //What to do with this one? 296 0x5: LEA(Gv,M); 297 0x6: WarnUnimpl::mov_Sw_MwRv(); 298 //0x7: group10_Ev(); 299 0x7: decode MODRM_REG { 300 0x0: POP(Ev); 301 default: UD2(); 302 } 303 } 304 0x12: decode OPCODE_OP_BOTTOM3 { 305 0x0: NOP(); //XXX repe makes this a "pause" 306 default: XCHG(Bv,rAv); 307 } 308 0x13: decode OPCODE_OP_BOTTOM3 { 309 0x0: CDQE(rAv); 310 0x1: CQO(rAv,rDv); 311 0x2: decode MODE_SUBMODE { 312 0x0: UD2(); 313 default: WarnUnimpl::call_far_Ap(); 314 } 315 0x3: WarnUnimpl::fwait(); //aka wait 316 0x4: PUSHF(); 317 0x5: POPF(); 318 //The 64 bit versions of both of these should be illegal only 319 //if CPUID says it isn't supported. For now, we'll just assume 320 //that it's supported. 321 0x6: decode MODE_SUBMODE { 322 0x0: SAHF_64(); 323 default: SAHF(); 324 } 325 0x7: decode MODE_SUBMODE { 326 0x0: LAHF_64(); 327 default: LAHF(); 328 } 329 } 330 0x14: decode OPCODE_OP_BOTTOM3 { 331 0x0: MOV(rAb, Ob); 332 0x1: MOV(rAv, Ov); 333 0x2: MOV(Ob, rAb); 334 0x3: MOV(Ov, rAv); 335 0x4: StringInst::MOVS(Yb,Xb); 336 0x5: StringInst::MOVS(Yv,Xv); 337 0x6: StringTestInst::CMPS(Yb,Xb); 338 0x7: StringTestInst::CMPS(Yv,Xv); 339 } 340 0x15: decode OPCODE_OP_BOTTOM3 { 341 0x0: TEST(rAb,Ib); 342 0x1: TEST(rAv,Iz); 343 0x2: StringInst::STOS(Yb); 344 0x3: StringInst::STOS(Yv); 345 0x4: StringInst::LODS(Xb); 346 0x5: StringInst::LODS(Xv); 347 0x6: StringTestInst::SCAS(Yb); 348 0x7: StringTestInst::SCAS(Yv); 349 } 350 0x16: MOV(Bb,Ib); 351 0x17: MOV(Bv,Iv); 352 0x18: decode OPCODE_OP_BOTTOM3 { 353 //0x0: group2_Eb_Ib(); 354 0x0: decode MODRM_REG { 355 0x0: ROL(Eb,Ib); 356 0x1: ROR(Eb,Ib); 357 0x2: RCL(Eb,Ib); 358 0x3: RCR(Eb,Ib); 359 0x4: SAL(Eb,Ib); 360 0x5: SHR(Eb,Ib); 361 0x6: SAL(Eb,Ib); 362 0x7: SAR(Eb,Ib); 363 } 364 //0x1: group2_Ev_Ib(); 365 0x1: decode MODRM_REG { 366 0x0: ROL(Ev,Ib); 367 0x1: ROR(Ev,Ib); 368 0x2: RCL(Ev,Ib); 369 0x3: RCR(Ev,Ib); 370 0x4: SAL(Ev,Ib); 371 0x5: SHR(Ev,Ib); 372 0x6: SAL(Ev,Ib); 373 0x7: SAR(Ev,Ib); 374 } 375 0x2: RET_NEAR(Iw); 376 0x3: RET_NEAR(); 377 0x4: decode MODE_SUBMODE { 378 0x0: UD2(); 379 default: WarnUnimpl::les_Gz_Mp(); 380 } 381 0x5: decode MODE_SUBMODE { 382 0x0: UD2(); 383 default: WarnUnimpl::lds_Gz_Mp(); 384 } 385 //0x6: group12_Eb_Ib(); 386 0x6: decode MODRM_REG { 387 0x0: MOV(Eb,Ib); 388 default: UD2(); 389 } 390 //0x7: group12_Ev_Iz(); 391 0x7: decode MODRM_REG { 392 0x0: MOV(Ev,Iz); 393 default: UD2(); 394 } 395 } 396 format WarnUnimpl { 397 0x19: decode OPCODE_OP_BOTTOM3 { 398 // The second parameter here should be of size b, but 399 // immediate sizes are determined elsewhere and this would 400 // confuse the instruction type specialization code. 401 0x0: Inst::ENTER(Iw,Iw); 402 0x1: Inst::LEAVE(); 403 0x2: ret_far_Iw(); 404 0x3: ret_far(); 405 0x4: int3(); 406 0x5: int_Ib(); 407 0x6: decode MODE_SUBMODE { 408 0x0: Inst::UD2(); 409 default: into(); 410 } 411 0x7: iret(); 412 } 413 } 414 0x1A: decode OPCODE_OP_BOTTOM3 { 415 //0x0: group2_Eb_1(); 416 0x0: decode MODRM_REG { 417 0x0: ROL_1(Eb); 418 0x1: ROR_1(Eb); 419 0x2: RCL_1(Eb); 420 0x3: RCR_1(Eb); 421 0x4: SAL_1(Eb); 422 0x5: SHR_1(Eb); 423 0x6: SAL_1(Eb); 424 0x7: SAR_1(Eb); 425 } 426 //0x1: group2_Ev_1(); 427 0x1: decode MODRM_REG { 428 0x0: ROL_1(Ev); 429 0x1: ROR_1(Ev); 430 0x2: RCL_1(Ev); 431 0x3: RCR_1(Ev); 432 0x4: SAL_1(Ev); 433 0x5: SHR_1(Ev); 434 0x6: SAL_1(Ev); 435 0x7: SAR_1(Ev); 436 } 437 //0x2: group2_Eb_Cl(); 438 0x2: decode MODRM_REG { 439 0x0: ROL(Eb,rCb); 440 0x1: ROR(Eb,rCb); 441 0x2: RCL(Eb,rCb); 442 0x3: RCR(Eb,rCb); 443 0x4: SAL(Eb,rCb); 444 0x5: SHR(Eb,rCb); 445 0x6: SAL(Eb,rCb); 446 0x7: SAR(Eb,rCb); 447 } 448 //The second operand should have size "b", but to have 449 //consistent register sizes it's "v". This shouldn't have 450 //any affect on functionality. 451 //0x3: group2_Ev_Cl(); 452 0x3: decode MODRM_REG { 453 0x0: ROL(Ev,rCv); 454 0x1: ROR(Ev,rCv); 455 0x2: RCL(Ev,rCv); 456 0x3: RCR(Ev,rCv); 457 0x4: SAL(Ev,rCv); 458 0x5: SHR(Ev,rCv); 459 0x6: SAL(Ev,rCv); 460 0x7: SAR(Ev,rCv); 461 } 462 0x4: decode MODE_SUBMODE { 463 0x0: UD2(); 464 default: WarnUnimpl::aam_Ib(); 465 } 466 0x5: decode MODE_SUBMODE { 467 0x0: UD2(); 468 default: WarnUnimpl::aad_Ib(); 469 } 470 0x6: decode MODE_SUBMODE { 471 0x0: UD2(); 472 default: SALC(rAb); 473 } 474 0x7: XLAT(); 475 } 476 ##include "x87.isa" 477 0x1C: decode OPCODE_OP_BOTTOM3 { 478 0x0: LOOPNE(Jb); 479 0x1: LOOPE(Jb); 480 0x2: LOOP(Jb); 481 0x3: JRCX(Jb); 482 0x4: IN(rAb,Ib); 483 0x5: IN(rAv,Iv); 484 0x6: OUT(Ib,rAb); 485 0x7: OUT(Iv,rAv); 486 } 487 0x1D: decode OPCODE_OP_BOTTOM3 { 488 0x0: CALL_NEAR(Jz); 489 0x1: JMP(Jz); 490 0x2: decode MODE_SUBMODE { 491 0x0: UD2(); 492 default: WarnUnimpl::jmp_far_Ap(); 493 } 494 0x3: JMP(Jb); 495 0x4: IN(rAb,rD); 496 0x5: IN(rAv,rD); 497 0x6: OUT(rD,rAb); 498 0x7: OUT(rD,rAv); 499 } 500 0x1E: decode OPCODE_OP_BOTTOM3 { 501 0x0: M5InternalError::error( 502 {{"Tried to execute the lock prefix!"}}); 503 0x1: WarnUnimpl::int1(); 504 0x2: M5InternalError::error( 505 {{"Tried to execute the repne prefix!"}}); 506 0x3: M5InternalError::error( 507 {{"Tried to execute the rep/repe prefix!"}}); 508 0x4: HLT(); 509 0x5: CMC(); 510 //0x6: group3_Eb(); 511 0x6: decode MODRM_REG { 512 0x0: TEST(Eb,Iz); 513 0x1: TEST(Eb,Iz); 514 0x2: NOT(Eb); 515 0x3: NEG(Eb); 516 0x4: MUL_B(Eb); 517 0x5: IMUL_B(Eb); 518 //This should be Eb, but it access the entire word value ax. 519 0x6: DIV_B(Ew); 520 0x7: IDIV(Eb); 521 } 522 //0x7: group3_Ev(); 523 0x7: decode MODRM_REG { 524 0x0: TEST(Ev,Iz); 525 0x1: TEST(Ev,Iz); 526 0x2: NOT(Ev); 527 0x3: NEG(Ev); 528 0x4: MUL(Ev); 529 0x5: IMUL(Ev); 530 0x6: DIV(Ev); 531 0x7: IDIV(Ev); 532 } 533 } 534 0x1F: decode OPCODE_OP_BOTTOM3 { 535 0x0: CLC(); 536 0x1: STC(); 537 0x2: WarnUnimpl::cli(); 538 0x3: WarnUnimpl::sti(); 539 0x4: CLD(); 540 0x5: STD(); 541 //0x6: group4(); 542 0x6: decode MODRM_REG { 543 0x0: INC(Eb); 544 0x1: DEC(Eb); 545 default: UD2(); 546 } 547 //0x7: group5(); 548 0x7: decode MODRM_REG { 549 0x0: INC(Ev); 550 0x1: DEC(Ev); 551 0x2: CALL_NEAR(Ev); 552 0x3: WarnUnimpl::call_far_Mp(); 553 0x4: JMP(Ev); 554 0x5: WarnUnimpl::jmp_far_Mp(); 555 0x6: PUSH(Ev); 556 0x7: UD2(); 557 } 558 } 559 } 560 default: FailUnimpl::oneByteOps(); 561} 562