one_byte_opcodes.isa revision 4592:520664dfb26f
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Derivatives of the software may be shared with 36// others provided: (i) the others agree to abide by the list of 37// conditions herein which includes the Non-Commercial Use restrictions; 38// and (ii) such Derivatives of the software include the above copyright 39// notice to acknowledge the contribution from this software where 40// applicable, this list of conditions and the disclaimer below. 41// 42// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 43// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 44// 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 WarnUnimpl { 63 0x00: decode OPCODE_OP_BOTTOM3 { 64 0x4: ADD(); 65 0x5: ADD(); 66 0x6: decode MODE_SUBMODE { 67 0x0: This_should_be_an_illegal_instruction(); 68 default: push_ES(); 69 } 70 0x7: decode MODE_SUBMODE { 71 0x0: This_should_be_an_illegal_instruction(); 72 default: pop_ES(); 73 } 74 default: ADD(); 75 } 76 0x01: decode OPCODE_OP_BOTTOM3 { 77 0x0: or_Eb_Gb(); 78 0x1: or_Ev_Gv(); 79 0x2: or_Gb_Eb(); 80 0x3: or_Gv_Ev(); 81 0x4: or_Al_Ib(); 82 0x5: or_rAX_Iz(); 83 0x6: decode MODE_SUBMODE { 84 0x0: This_should_be_an_illegal_instruction(); 85 default: push_CS(); 86 } 87 //Any time this is seen, it should generate a two byte opcode 88 0x7: M5InternalError::error( 89 {{"Saw a one byte opcode whose value was 0x0F!"}}); 90 } 91 0x02: decode OPCODE_OP_BOTTOM3 { 92 0x0: adc_Eb_Gb(); 93 0x1: adc_Ev_Gv(); 94 0x2: adc_Gb_Eb(); 95 0x3: adc_Gv_Ev(); 96 0x4: adc_Al_Ib(); 97 0x5: adc_rAX_Iz(); 98 0x6: decode MODE_SUBMODE { 99 0x0: This_should_be_an_illegal_instruction(); 100 default: push_SS(); 101 } 102 0x7: decode MODE_SUBMODE { 103 0x0: This_should_be_an_illegal_instruction(); 104 default: pop_SS(); 105 } 106 } 107 0x03: decode OPCODE_OP_BOTTOM3 { 108 0x0: sbb_Eb_Gb(); 109 0x1: sbb_Ev_Gv(); 110 0x2: sbb_Gb_Eb(); 111 0x3: sbb_Gv_Ev(); 112 0x4: sbb_Al_Ib(); 113 0x5: sbb_rAX_Iz(); 114 0x6: decode MODE_SUBMODE { 115 0x0: This_should_be_an_illegal_instruction(); 116 default: push_DS(); 117 } 118 0x7: decode MODE_SUBMODE { 119 0x0: This_should_be_an_illegal_instruction(); 120 default: pop_DS(); 121 } 122 } 123 0x04: decode OPCODE_OP_BOTTOM3 { 124 0x0: and_Eb_Gb(); 125 0x1: and_Ev_Gv(); 126 0x2: and_Gb_Eb(); 127 0x3: and_Gv_Ev(); 128 0x4: and_Al_Ib(); 129 0x5: and_rAX_Iz(); 130 0x6: M5InternalError::error( 131 {{"Tried to execute the ES segment override prefix!"}}); 132 0x7: decode MODE_SUBMODE { 133 0x0: This_should_be_an_illegal_instruction(); 134 default: daa(); 135 } 136 } 137 0x05: decode OPCODE_OP_BOTTOM3 { 138 0x0: sub_Eb_Gb(); 139 0x1: sub_Ev_Gv(); 140 0x2: sub_Gb_Eb(); 141 0x3: sub_Gv_Ev(); 142 0x4: sub_Al_Ib(); 143 0x5: sub_rAX_Iz(); 144 0x6: M5InternalError::error( 145 {{"Tried to execute the CS segment override prefix!"}}); 146 0x7: das(); 147 } 148 0x06: decode OPCODE_OP_BOTTOM3 { 149 0x4: Inst::XOR(rAl,Ib); 150 0x5: Inst::XOR(rAx,Iz); 151 0x6: M5InternalError::error( 152 {{"Tried to execute the SS segment override prefix!"}}); 153 0x7: decode MODE_SUBMODE { 154 0x0: This_should_be_an_illegal_instruction(); 155 default: aaa(); 156 } 157 default: MultiInst::XOR(OPCODE_OP_BOTTOM3, 158 [Eb,Gb], [Ev,Gv], 159 [Gb,Eb], [Gv,Ev]); 160 } 161 0x07: decode OPCODE_OP_BOTTOM3 { 162 0x0: cmp_Eb_Gb(); 163 0x1: cmp_Ev_Gv(); 164 0x2: cmp_Gb_Eb(); 165 0x3: cmp_Gv_Ev(); 166 0x4: cmp_Al_Ib(); 167 0x5: cmp_rAX_Iz(); 168 0x6: M5InternalError::error( 169 {{"Tried to execute the DS segment override prefix!"}}); 170 0x7: decode MODE_SUBMODE { 171 0x0: This_should_be_an_illegal_instruction(); 172 default: aas(); 173 } 174 } 175 0x08: decode OPCODE_OP_BOTTOM3 { 176 0x0: inc_eAX(); 177 0x1: inc_eCX(); 178 0x2: inc_eDX(); 179 0x3: inc_eBX(); 180 0x4: inc_eSP(); 181 0x5: inc_eBP(); 182 0x6: inc_eSI(); 183 0x7: inc_eDI(); 184 } 185 0x09: decode OPCODE_OP_BOTTOM3 { 186 0x0: dec_eAX(); 187 0x1: dec_eCX(); 188 0x2: dec_eDX(); 189 0x3: dec_eBX(); 190 0x4: dec_eSP(); 191 0x5: dec_eBP(); 192 0x6: dec_eSI(); 193 0x7: dec_eDI(); 194 } 195 format Inst { 196 0x0A: decode OPCODE_OP_BOTTOM3 { 197 0x0: PUSH(rAx); 198 0x1: PUSH(rCx); 199 0x2: PUSH(rDx); 200 0x3: PUSH(rBx); 201 0x4: PUSH(rSP); 202 0x5: PUSH(rBP); 203 0x6: PUSH(rSI); 204 0x7: PUSH(rDI); 205 } 206 0x0B: decode OPCODE_OP_BOTTOM3 { 207 0x0: POP(rAx); 208 0x1: POP(rCx); 209 0x2: POP(rDx); 210 0x3: POP(rBx); 211 0x4: POP(rSP); 212 0x5: POP(rBP); 213 0x6: POP(rSI); 214 0x7: POP(rDI); 215 } 216 } 217 0x0C: decode OPCODE_OP_BOTTOM3 { 218 0x0: decode MODE_SUBMODE { 219 0x0: This_should_be_an_illegal_instruction(); 220 default: pusha(); 221 } 222 0x1: decode MODE_SUBMODE { 223 0x0: This_should_be_an_illegal_instruction(); 224 default: popa(); 225 } 226 0x2: decode MODE_SUBMODE { 227 0x0: This_should_be_an_illegal_instruction(); 228 default: bound_Gv_Ma(); 229 } 230 0x3: arpl_Ew_Gw(); 231 0x4: M5InternalError::error( 232 {{"Tried to execute the FS segment override prefix!"}}); 233 0x5: M5InternalError::error( 234 {{"Tried to execute the GS segment override prefix!"}}); 235 0x6: M5InternalError::error( 236 {{"Tried to execute the operand size override prefix!"}}); 237 0x7: M5InternalError::error( 238 {{"Tried to execute the DS address size override prefix!"}}); 239 } 240 0x0D: decode OPCODE_OP_BOTTOM3 { 241 0x0: push_Iz(); 242 0x1: imul_Gv_Ev_Iz(); 243 0x2: push_Ib(); 244 0x3: imul_Gv_Ev_Ib(); 245 0x4: ins_Yb_Dx(); 246 0x5: ins_Yz_Dx(); 247 0x6: outs_Dx_Xb(); 248 0x7: outs_Dx_Xz(); 249 } 250 0x0E: decode OPCODE_OP_BOTTOM3 { 251 0x0: jo_Jb(); 252 0x1: jno_Jb(); 253 0x2: jb_Jb(); 254 0x3: jnb_Jb(); 255 0x4: jz_Jb(); 256 0x5: jnz_Jb(); 257 0x6: jbe_Jb(); 258 0x7: jnbe_Jb(); 259 } 260 0x0F: decode OPCODE_OP_BOTTOM3 { 261 0x0: js_Jb(); 262 0x1: jns_Jb(); 263 0x2: jp_Jb(); 264 0x3: jnp_Jb(); 265 0x4: jl_Jb(); 266 0x5: jnl_Jb(); 267 0x6: jle_Jb(); 268 0x7: jnke_Jb(); 269 } 270 0x10: decode OPCODE_OP_BOTTOM3 { 271 0x0: group1_Eb_Ib(); 272 0x1: group1_Ev_Iz(); 273 0x2: decode MODE_SUBMODE { 274 0x0: This_should_be_an_illegal_instruction(); 275 default: group1_Eb_Ib(); 276 } 277 //0x3: group1_Ev_Ib(); 278 0x3: decode MODRM_REG { 279 0x0: add_Eb_Ib(); 280 0x1: or_Eb_Ib(); 281 0x2: adc_Eb_Ib(); 282 0x3: sbb_Eb_Ib(); 283 0x4: Inst::AND(Eb,Ib); 284 0x5: sub_Eb_Ib(); 285 0x6: xor_Eb_Ib(); 286 0x7: cmp_Eb_Ib(); 287 } 288 0x4: test_Eb_Gb(); 289 0x5: test_Ev_Gv(); 290 0x6: xchg_Eb_Gb(); 291 0x7: xchg_Ev_Gv(); 292 } 293 0x11: decode OPCODE_OP_BOTTOM3 { 294 0x0: Inst::MOV(Eb,Gb); 295 0x1: Inst::MOV(Ev,Gv); 296 0x2: Inst::MOV(Gb,Eb); 297 0x3: Inst::MOV(Gv,Eb); 298 0x4: mov_MwRv_Sw(); //What to do with this one? 299 0x5: lea_Gv_M(); 300 0x6: mov_Sw_MwRv(); 301 0x7: group10_Ev(); //Make sure this is Ev 302 } 303 0x12: decode OPCODE_OP_BOTTOM3 { 304 0x0: nop_or_pause(); //Check for repe prefix 305 0x1: xchg_rCX_rAX(); 306 0x2: xchg_rDX_rAX(); 307 0x3: xchg_rVX_rAX(); 308 0x4: xchg_rSP_rAX(); 309 0x5: xchg_rBP_rAX(); 310 0x6: xchg_rSI_rAX(); 311 0x7: xchg_rDI_rAX(); 312 } 313 0x13: decode OPCODE_OP_BOTTOM3 { 314 0x0: cbw_or_cwde_or_cdqe_rAX(); 315 0x1: cwd_or_cdq_or_cqo_rAX_rDX(); 316 0x2: decode MODE_SUBMODE { 317 0x0: This_should_be_an_illegal_instruction(); 318 default: call_Ap(); 319 } 320 0x3: fwait(); //aka wait 321 0x4: pushf_Fv(); 322 0x5: popf_Fv(); 323 //Both of these should be illegal only if CPUID.AHF64=0, 324 //according to sandpile.org 325 0x6: decode MODE_SUBMODE { 326 0x0: This_should_be_an_illegal_instruction(); 327 default: sahf(); 328 } 329 0x7: decode MODE_SUBMODE { 330 0x0: This_should_be_an_illegal_instruction(); 331 default: lahf(); 332 } 333 } 334 0x14: decode OPCODE_OP_BOTTOM3 { 335 0x0: mov_Al_Ob(); 336 0x1: mov_rAX_Ov(); 337 0x2: mov_Ob_Al(); 338 0x3: mov_Ov_rAX(); 339 0x4: movs_Yb_Xb(); 340 0x5: movs_Yv_Xv(); 341 0x6: cmps_Yb_Xb(); 342 0x7: cmps_Yv_Xv(); 343 } 344 0x15: decode OPCODE_OP_BOTTOM3 { 345 0x0: test_Al_Ib(); 346 0x1: test_rAX_Iz(); 347 0x2: stos_Yb_Al(); 348 0x3: stos_Yv_rAX(); 349 0x4: lods_Al_Xb(); 350 0x5: lods_rAX_Xv(); 351 0x6: scas_Yb_Al(); 352 0x7: scas_Yv_rAX(); 353 } 354 0x16: decode OPCODE_OP_BOTTOM3 { 355 0x0: mov_Al_Ib(); 356 0x1: mov_Cl_Ib(); 357 0x2: mov_Dl_Ib(); 358 0x3: mov_Bl_Ib(); 359 0x4: mov_Ah_Ib(); 360 0x5: mov_Ch_Ib(); 361 0x6: mov_Dh_Ib(); 362 0x7: mov_Bh_Ib(); 363 } 364 0x17: decode OPCODE_OP_BOTTOM3 { 365 0x0: mov_rAX_Iv(); 366 0x1: mov_rCX_Iv(); 367 0x2: mov_rDX_Iv(); 368 0x3: mov_rBX_Iv(); 369 0x4: mov_rSP_Iv(); 370 0x5: mov_rBP_Iv(); 371 0x6: mov_rSI_Iv(); 372 0x7: mov_rDI_Iv(); 373 } 374 0x18: decode OPCODE_OP_BOTTOM3 { 375 0x0: group2_Eb_Ib(); 376 0x1: group2_Ev_Ib(); 377 0x2: ret_near_Iw(); 378 0x3: ret_near(); 379 0x4: decode MODE_SUBMODE { 380 0x0: This_should_be_an_illegal_instruction(); 381 default: les_Gz_Mp(); 382 } 383 0x5: decode MODE_SUBMODE { 384 0x0: This_should_be_an_illegal_instruction(); 385 default: lds_Gz_Mp(); 386 } 387 //0x6: group12_Eb_Ib(); 388 0x6: decode MODRM_REG { 389 0x0: Inst::MOV(Eb,Ib); 390 } 391 //0x7: group12_Ev_Iz(); 392 0x7: decode MODRM_REG { 393 0x0: Inst::MOV(Ev,Iz); 394 } 395 } 396 0x19: decode OPCODE_OP_BOTTOM3 { 397 0x0: enter_Iw_Ib(); 398 0x1: leave(); 399 0x2: ret_far_Iw(); 400 0x3: ret_far(); 401 0x4: int3(); 402 0x5: int_Ib(); 403 0x6: decode MODE_SUBMODE { 404 0x0: This_should_be_an_illegal_instruction(); 405 default: into(); 406 } 407 0x7: iret(); 408 } 409 0x1A: decode OPCODE_OP_BOTTOM3 { 410 0x0: group2_Eb_1(); 411 0x1: group2_Ev_1(); 412 0x2: group2_Eb_Cl(); 413 0x3: group2_Ev_Cl(); 414 0x4: decode MODE_SUBMODE { 415 0x0: This_should_be_an_illegal_instruction(); 416 default: aam_Ib(); 417 } 418 0x5: decode MODE_SUBMODE { 419 0x0: This_should_be_an_illegal_instruction(); 420 default: aad_Ib(); 421 } 422 0x6: decode MODE_SUBMODE { 423 0x0: This_should_be_an_illegal_instruction(); 424 default: salc(); 425 } 426 0x7: xlat(); 427 } 428 0x1B: decode OPCODE_OP_BOTTOM3 { 429 0x0: esc0(); 430 0x1: esc1(); 431 0x2: esc2(); 432 0x3: esc3(); 433 0x4: esc4(); 434 0x5: esc5(); 435 0x6: esc6(); 436 0x7: esc7(); 437 } 438 0x1C: decode OPCODE_OP_BOTTOM3 { 439 0x0: loopne_Jb(); 440 0x1: loope_Jb(); 441 0x2: loop_Jb(); 442 0x3: jcxz_or_jecx_or_jrcx(); 443 0x4: in_Al_Ib(); 444 0x5: in_eAX_Ib(); 445 0x6: out_Ib_Al(); 446 0x7: out_Ib_eAX(); 447 } 448 0x1D: decode OPCODE_OP_BOTTOM3 { 449 0x0: Inst::CALL(Jz); 450 0x1: jmp_Jz(); 451 0x2: decode MODE_SUBMODE { 452 0x0: This_should_be_an_illegal_instruction(); 453 default: jmp_Ap(); 454 } 455 0x3: jmp_Jb(); 456 0x4: in_Al_Dx(); 457 0x5: in_eAX_Dx(); 458 0x6: out_Dx_Al(); 459 0x7: out_Dx_eAX(); 460 } 461 0x1E: decode OPCODE_OP_BOTTOM3 { 462 0x0: M5InternalError::error( 463 {{"Tried to execute the lock prefix!"}}); 464 0x1: int1(); 465 0x2: M5InternalError::error( 466 {{"Tried to execute the repne prefix!"}}); 467 0x3: M5InternalError::error( 468 {{"Tried to execute the rep/repe prefix!"}}); 469 0x4: hlt(); 470 0x5: cmc(); 471 0x6: group3_Eb(); 472 0x7: group3_Ev(); 473 } 474 0x1F: decode OPCODE_OP_BOTTOM3 { 475 0x0: clc(); 476 0x1: stc(); 477 0x2: cli(); 478 0x3: sti(); 479 0x4: cld(); 480 0x5: std(); 481 0x6: group4(); 482 0x7: group5(); 483 } 484 } 485 default: FailUnimpl::oneByteOps(); 486} 487