data.isa revision 7212:746657ee59a2
1// Copyright (c) 2010 ARM Limited 2// All rights reserved 3// 4// The license below extends only to copyright in the software and shall 5// not be construed as granting a license to any other intellectual 6// property including but not limited to intellectual property relating 7// to a hardware implementation of the functionality of the software 8// licensed hereunder. You may use the software subject to the license 9// terms below provided that you ensure that this notice is replicated 10// unmodified and in its entirety in all distributions of the software, 11// modified or unmodified, in source code or in binary form. 12// 13// Redistribution and use in source and binary forms, with or without 14// modification, are permitted provided that the following conditions are 15// met: redistributions of source code must retain the above copyright 16// notice, this list of conditions and the following disclaimer; 17// redistributions in binary form must reproduce the above copyright 18// notice, this list of conditions and the following disclaimer in the 19// documentation and/or other materials provided with the distribution; 20// neither the name of the copyright holders nor the names of its 21// contributors may be used to endorse or promote products derived from 22// this software without specific prior written permission. 23// 24// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 25// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 26// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 27// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 28// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 29// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 30// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 31// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 32// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 33// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 34// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 35// 36// Authors: Gabe Black 37 38def format ArmDataProcReg() {{ 39 pclr = ''' 40 return new %(className)ssRegPclr(machInst, %(dest)s, 41 %(op1)s, rm, imm5, 42 type); 43 ''' 44 instDecode = ''' 45 case %(opcode)#x: 46 if (immShift) { 47 if (setCc) { 48 if (%(dest)s == INTREG_PC) { 49 %(pclr)s 50 } else { 51 return new %(className)sRegCc(machInst, %(dest)s, 52 %(op1)s, rm, imm5, type); 53 } 54 } else { 55 return new %(className)sReg(machInst, %(dest)s, %(op1)s, 56 rm, imm5, type); 57 } 58 } else { 59 if (setCc) { 60 return new %(className)sRegRegCc(machInst, %(dest)s, 61 %(op1)s, rm, rs, type); 62 } else { 63 return new %(className)sRegReg(machInst, %(dest)s, 64 %(op1)s, rm, rs, type); 65 } 66 } 67 break; 68 ''' 69 70 def instCode(opcode, mnem, useDest = True, useOp1 = True): 71 global pclr 72 if useDest: 73 dest = "rd" 74 else: 75 dest = "INTREG_ZERO" 76 if useOp1: 77 op1 = "rn" 78 else: 79 op1 = "INTREG_ZERO" 80 global instDecode, pclrCode 81 substDict = { "className": mnem.capitalize(), 82 "opcode": opcode, 83 "dest": dest, 84 "op1": op1 } 85 if useDest: 86 substDict["pclr"] = pclr % substDict 87 else: 88 substDict["pclr"] = "" 89 return instDecode % substDict 90 91 decode_block = ''' 92 { 93 const bool immShift = (bits(machInst, 4) == 0); 94 const bool setCc = (bits(machInst, 20) == 1); 95 const uint32_t imm5 = bits(machInst, 11, 7); 96 const ArmShiftType type = (ArmShiftType)(uint32_t)bits(machInst, 6, 5); 97 const IntRegIndex rd = (IntRegIndex)(uint32_t)RD; 98 const IntRegIndex rn = (IntRegIndex)(uint32_t)RN; 99 const IntRegIndex rm = (IntRegIndex)(uint32_t)RM; 100 const IntRegIndex rs = (IntRegIndex)(uint32_t)RS; 101 switch (OPCODE) { 102 ''' 103 decode_block += instCode(0x0, "and") 104 decode_block += instCode(0x1, "eor") 105 decode_block += instCode(0x2, "sub") 106 decode_block += instCode(0x3, "rsb") 107 decode_block += instCode(0x4, "add") 108 decode_block += instCode(0x5, "adc") 109 decode_block += instCode(0x6, "sbc") 110 decode_block += instCode(0x7, "rsc") 111 decode_block += instCode(0x8, "tst", useDest = False) 112 decode_block += instCode(0x9, "teq", useDest = False) 113 decode_block += instCode(0xa, "cmp", useDest = False) 114 decode_block += instCode(0xb, "cmn", useDest = False) 115 decode_block += instCode(0xc, "orr") 116 decode_block += instCode(0xd, "mov", useOp1 = False) 117 decode_block += instCode(0xe, "bic") 118 decode_block += instCode(0xf, "mvn", useOp1 = False) 119 decode_block += ''' 120 default: 121 return new Unknown(machInst); 122 } 123 } 124 ''' 125}}; 126 127def format ArmPackUnpackSatReverse() {{ 128 decode_block = ''' 129 { 130 const uint32_t op1 = bits(machInst, 22, 20); 131 const uint32_t a = bits(machInst, 19, 16); 132 const uint32_t op2 = bits(machInst, 7, 5); 133 if (bits(op2, 0) == 0) { 134 if (op1 == 0) { 135 return new WarnUnimplemented("pkh", machInst); 136 } else if (bits(op1, 2, 1) == 1) { 137 return new WarnUnimplemented("ssat", machInst); 138 } else if (bits(op1, 2, 1) == 3) { 139 return new WarnUnimplemented("usat", machInst); 140 } 141 return new Unknown(machInst); 142 } 143 switch (op1) { 144 case 0x0: 145 if (op2 == 0x3) { 146 if (a == 0xf) { 147 return new WarnUnimplemented("sxtb16", machInst); 148 } else { 149 return new WarnUnimplemented("sxtab16", machInst); 150 } 151 } else if (op2 == 0x5) { 152 return new WarnUnimplemented("sel", machInst); 153 } 154 break; 155 case 0x2: 156 if (op2 == 0x1) { 157 return new WarnUnimplemented("ssat16", machInst); 158 } else if (op2 == 0x3) { 159 if (a == 0xf) { 160 return new WarnUnimplemented("sxtb", machInst); 161 } else { 162 return new WarnUnimplemented("sxtab", machInst); 163 } 164 } 165 break; 166 case 0x3: 167 if (op2 == 0x1) { 168 IntRegIndex rd = (IntRegIndex)(uint32_t)bits(machInst, 15, 12); 169 IntRegIndex rm = (IntRegIndex)(uint32_t)bits(machInst, 3, 0); 170 return new Rev(machInst, rd, rm); 171 } else if (op2 == 0x3) { 172 if (a == 0xf) { 173 return new WarnUnimplemented("sxth", machInst); 174 } else { 175 return new WarnUnimplemented("sxtah", machInst); 176 } 177 } else if (op2 == 0x5) { 178 IntRegIndex rd = (IntRegIndex)(uint32_t)bits(machInst, 15, 12); 179 IntRegIndex rm = (IntRegIndex)(uint32_t)bits(machInst, 3, 0); 180 return new Rev16(machInst, rd, rm); 181 } 182 break; 183 case 0x4: 184 if (op2 == 0x3) { 185 if (a == 0xf) { 186 return new WarnUnimplemented("uxtb16", machInst); 187 } else { 188 return new WarnUnimplemented("uxtab16", machInst); 189 } 190 } 191 break; 192 case 0x6: 193 if (op2 == 0x1) { 194 return new WarnUnimplemented("usat16", machInst); 195 } else if (op2 == 0x3) { 196 if (a == 0xf) { 197 return new WarnUnimplemented("uxtb", machInst); 198 } else { 199 return new WarnUnimplemented("uxtab", machInst); 200 } 201 } 202 break; 203 case 0x7: 204 if (op2 == 0x1) { 205 return new WarnUnimplemented("rbit", machInst); 206 } else if (op2 == 0x3) { 207 if (a == 0xf) { 208 return new WarnUnimplemented("uxth", machInst); 209 } else { 210 return new WarnUnimplemented("uxtah", machInst); 211 } 212 } else if (op2 == 0x5) { 213 IntRegIndex rd = (IntRegIndex)(uint32_t)bits(machInst, 15, 12); 214 IntRegIndex rm = (IntRegIndex)(uint32_t)bits(machInst, 3, 0); 215 return new Revsh(machInst, rd, rm); 216 } 217 break; 218 } 219 return new Unknown(machInst); 220 } 221 ''' 222}}; 223 224def format ArmParallelAddSubtract() {{ 225 decode_block=''' 226 { 227 const uint32_t op1 = bits(machInst, 21, 20); 228 const uint32_t op2 = bits(machInst, 7, 5); 229 const IntRegIndex rn = (IntRegIndex)(uint32_t)bits(machInst, 19, 16); 230 const IntRegIndex rd = (IntRegIndex)(uint32_t)bits(machInst, 15, 12); 231 const IntRegIndex rm = (IntRegIndex)(uint32_t)bits(machInst, 3, 0); 232 if (bits(machInst, 22) == 0) { 233 switch (op1) { 234 case 0x1: 235 switch (op2) { 236 case 0x0: 237 return new WarnUnimplemented("sadd16", machInst); 238 case 0x1: 239 return new WarnUnimplemented("sasx", machInst); 240 case 0x2: 241 return new WarnUnimplemented("ssax", machInst); 242 case 0x3: 243 return new WarnUnimplemented("ssub16", machInst); 244 case 0x4: 245 return new WarnUnimplemented("sadd8", machInst); 246 case 0x7: 247 return new WarnUnimplemented("ssub8", machInst); 248 } 249 break; 250 case 0x2: 251 switch (op2) { 252 case 0x0: 253 return new Qadd16Reg(machInst, rd, rn, rm, 0, LSL); 254 case 0x1: 255 return new QasxReg(machInst, rd, rn, rm, 0, LSL); 256 case 0x2: 257 return new QsaxReg(machInst, rd, rn, rm, 0, LSL); 258 case 0x3: 259 return new Qsub16Reg(machInst, rd, rn, rm, 0, LSL); 260 case 0x4: 261 return new Qadd8Reg(machInst, rd, rn, rm, 0, LSL); 262 case 0x7: 263 return new Qsub8Reg(machInst, rd, rn, rm, 0, LSL); 264 } 265 break; 266 case 0x3: 267 switch (op2) { 268 case 0x0: 269 return new WarnUnimplemented("shadd16", machInst); 270 case 0x1: 271 return new WarnUnimplemented("shasx", machInst); 272 case 0x2: 273 return new WarnUnimplemented("shsax", machInst); 274 case 0x3: 275 return new WarnUnimplemented("shsub16", machInst); 276 case 0x4: 277 return new WarnUnimplemented("shadd8", machInst); 278 case 0x7: 279 return new WarnUnimplemented("shsub8", machInst); 280 } 281 break; 282 } 283 } else { 284 switch (op1) { 285 case 0x1: 286 switch (op2) { 287 case 0x0: 288 return new WarnUnimplemented("uadd16", machInst); 289 case 0x1: 290 return new WarnUnimplemented("uasx", machInst); 291 case 0x2: 292 return new WarnUnimplemented("usax", machInst); 293 case 0x3: 294 return new WarnUnimplemented("usub16", machInst); 295 case 0x4: 296 return new WarnUnimplemented("uadd8", machInst); 297 case 0x7: 298 return new WarnUnimplemented("usub8", machInst); 299 } 300 break; 301 case 0x2: 302 switch (op2) { 303 case 0x0: 304 return new WarnUnimplemented("uqadd16", machInst); 305 case 0x1: 306 return new WarnUnimplemented("uqasx", machInst); 307 case 0x2: 308 return new WarnUnimplemented("uqsax", machInst); 309 case 0x3: 310 return new WarnUnimplemented("uqsub16", machInst); 311 case 0x4: 312 return new WarnUnimplemented("uqadd8", machInst); 313 case 0x7: 314 return new WarnUnimplemented("uqsub8", machInst); 315 } 316 break; 317 case 0x3: 318 switch (op2) { 319 case 0x0: 320 return new WarnUnimplemented("uhadd16", machInst); 321 case 0x1: 322 return new WarnUnimplemented("uhasx", machInst); 323 case 0x2: 324 return new WarnUnimplemented("uhsax", machInst); 325 case 0x3: 326 return new WarnUnimplemented("uhsub16", machInst); 327 case 0x4: 328 return new WarnUnimplemented("uhadd8", machInst); 329 case 0x7: 330 return new WarnUnimplemented("uhsub8", machInst); 331 } 332 break; 333 } 334 } 335 return new Unknown(machInst); 336 } 337 ''' 338}}; 339 340def format ArmDataProcImm() {{ 341 pclr = ''' 342 return new %(className)ssImmPclr(machInst, %(dest)s, 343 %(op1)s, imm, false); 344 ''' 345 adr = ''' 346 return new AdrImm(machInst, %(dest)s, %(add)s, 347 imm, false); 348 ''' 349 instDecode = ''' 350 case %(opcode)#x: 351 if (setCc) { 352 if (%(pclrInst)s && %(dest)s == INTREG_PC) { 353 %(pclr)s 354 } else { 355 return new %(className)sImmCc(machInst, %(dest)s, %(op1)s, 356 imm, rotC); 357 } 358 } else { 359 if (%(adrInst)s && %(op1)s == INTREG_PC) { 360 %(adr)s 361 } else { 362 return new %(className)sImm(machInst, %(dest)s, %(op1)s, 363 imm, rotC); 364 } 365 } 366 break; 367 ''' 368 369 def instCode(opcode, mnem, useDest = True, useOp1 = True): 370 global instDecode, pclr, adr 371 if useDest: 372 dest = "rd" 373 else: 374 dest = "INTREG_ZERO" 375 if useOp1: 376 op1 = "rn" 377 else: 378 op1 = "INTREG_ZERO" 379 substDict = { "className": mnem.capitalize(), 380 "opcode": opcode, 381 "dest": dest, 382 "op1": op1, 383 "adr": "", 384 "adrInst": "false" } 385 if useDest: 386 substDict["pclrInst"] = "true" 387 substDict["pclr"] = pclr % substDict 388 else: 389 substDict["pclrInst"] = "false" 390 substDict["pclr"] = "" 391 return instDecode % substDict 392 393 def adrCode(opcode, mnem, add="1"): 394 global instDecode, pclr, adr 395 substDict = { "className": mnem.capitalize(), 396 "opcode": opcode, 397 "dest": "rd", 398 "op1": "rn", 399 "add": add, 400 "pclrInst": "true", 401 "adrInst": "true" } 402 substDict["pclr"] = pclr % substDict 403 substDict["adr"] = adr % substDict 404 return instDecode % substDict 405 406 decode_block = ''' 407 { 408 const bool setCc = (bits(machInst, 20) == 1); 409 const uint32_t unrotated = bits(machInst, 7, 0); 410 const uint32_t rotation = (bits(machInst, 11, 8) << 1); 411 const bool rotC = (rotation != 0); 412 const uint32_t imm = rotate_imm(unrotated, rotation); 413 const IntRegIndex rd = (IntRegIndex)(uint32_t)RD; 414 const IntRegIndex rn = (IntRegIndex)(uint32_t)RN; 415 switch (OPCODE) { 416 ''' 417 decode_block += instCode(0x0, "and") 418 decode_block += instCode(0x1, "eor") 419 decode_block += adrCode(0x2, "sub", add="(IntRegIndex)0") 420 decode_block += instCode(0x3, "rsb") 421 decode_block += adrCode(0x4, "add", add="(IntRegIndex)1") 422 decode_block += instCode(0x5, "adc") 423 decode_block += instCode(0x6, "sbc") 424 decode_block += instCode(0x7, "rsc") 425 decode_block += instCode(0x8, "tst", useDest = False) 426 decode_block += instCode(0x9, "teq", useDest = False) 427 decode_block += instCode(0xa, "cmp", useDest = False) 428 decode_block += instCode(0xb, "cmn", useDest = False) 429 decode_block += instCode(0xc, "orr") 430 decode_block += instCode(0xd, "mov", useOp1 = False) 431 decode_block += instCode(0xe, "bic") 432 decode_block += instCode(0xf, "mvn", useOp1 = False) 433 decode_block += ''' 434 default: 435 return new Unknown(machInst); 436 } 437 } 438 ''' 439}}; 440 441def format ArmSatAddSub() {{ 442 decode_block = ''' 443 { 444 IntRegIndex rn = (IntRegIndex)(uint32_t)bits(machInst, 19, 16); 445 IntRegIndex rd = (IntRegIndex)(uint32_t)bits(machInst, 15, 12); 446 IntRegIndex rm = (IntRegIndex)(uint32_t)bits(machInst, 3, 0); 447 switch (OPCODE) { 448 case 0x8: 449 return new QaddRegCc(machInst, rd, rm, rn, 0, LSL); 450 case 0x9: 451 return new QsubRegCc(machInst, rd, rm, rn, 0, LSL); 452 case 0xa: 453 return new QdaddRegCc(machInst, rd, rm, rn, 0, LSL); 454 case 0xb: 455 return new QdsubRegCc(machInst, rd, rm, rn, 0, LSL); 456 default: 457 return new Unknown(machInst); 458 } 459 } 460 ''' 461}}; 462 463def format Thumb16ShiftAddSubMoveCmp() {{ 464 decode_block = ''' 465 { 466 const uint32_t imm5 = bits(machInst, 10, 6); 467 const uint32_t imm3 = bits(machInst, 8, 6); 468 const uint32_t imm8 = bits(machInst, 7, 0); 469 const IntRegIndex rd = (IntRegIndex)(uint32_t)bits(machInst, 2, 0); 470 const IntRegIndex rd8 = (IntRegIndex)(uint32_t)bits(machInst, 10, 8); 471 const IntRegIndex rn = (IntRegIndex)(uint32_t)bits(machInst, 5, 3); 472 const IntRegIndex rm = (IntRegIndex)(uint32_t)bits(machInst, 8, 6); 473 switch (bits(machInst, 13, 11)) { 474 case 0x0: // lsl 475 return new MovRegCc(machInst, rd, INTREG_ZERO, rn, imm5, LSL); 476 case 0x1: // lsr 477 return new MovRegCc(machInst, rd, INTREG_ZERO, rn, imm5, LSR); 478 case 0x2: // asr 479 return new MovRegCc(machInst, rd, INTREG_ZERO, rn, imm5, ASR); 480 case 0x3: 481 switch (bits(machInst, 10, 9)) { 482 case 0x0: 483 return new AddRegCc(machInst, rd, rn, rm, 0, LSL); 484 case 0x1: 485 return new SubRegCc(machInst, rd, rn, rm, 0, LSL); 486 case 0x2: 487 return new AddImmCc(machInst, rd, rn, imm3, true); 488 case 0x3: 489 return new SubImmCc(machInst, rd, rn, imm3, true); 490 } 491 case 0x4: 492 return new MovImmCc(machInst, rd8, INTREG_ZERO, imm8, false); 493 case 0x5: 494 return new CmpImmCc(machInst, INTREG_ZERO, rd8, imm8, true); 495 case 0x6: 496 return new AddImmCc(machInst, rd8, rd8, imm8, true); 497 case 0x7: 498 return new SubImmCc(machInst, rd8, rd8, imm8, true); 499 } 500 } 501 ''' 502}}; 503 504def format Thumb16DataProcessing() {{ 505 decode_block = ''' 506 { 507 const IntRegIndex rdn = (IntRegIndex)(uint32_t)bits(machInst, 2, 0); 508 const IntRegIndex rm = (IntRegIndex)(uint32_t)bits(machInst, 5, 3); 509 switch (bits(machInst, 9, 6)) { 510 case 0x0: 511 return new AndRegCc(machInst, rdn, rdn, rm, 0, LSL); 512 case 0x1: 513 return new EorRegCc(machInst, rdn, rdn, rm, 0, LSL); 514 case 0x2: //lsl 515 return new MovRegRegCc(machInst, rdn, INTREG_ZERO, rdn, rm, LSL); 516 case 0x3: //lsr 517 return new MovRegRegCc(machInst, rdn, INTREG_ZERO, rdn, rm, LSR); 518 case 0x4: //asr 519 return new MovRegRegCc(machInst, rdn, INTREG_ZERO, rdn, rm, ASR); 520 case 0x5: 521 return new AdcRegCc(machInst, rdn, rdn, rm, 0, LSL); 522 case 0x6: 523 return new SbcRegCc(machInst, rdn, rdn, rm, 0, LSL); 524 case 0x7: // ror 525 return new MovRegRegCc(machInst, rdn, INTREG_ZERO, rdn, rm, ROR); 526 case 0x8: 527 return new TstRegCc(machInst, INTREG_ZERO, rdn, rm, 0, LSL); 528 case 0x9: 529 return new RsbImmCc(machInst, rdn, rm, 0, true); 530 case 0xa: 531 return new CmpRegCc(machInst, INTREG_ZERO, rdn, rm, 0, LSL); 532 case 0xb: 533 return new CmnRegCc(machInst, INTREG_ZERO, rdn, rm, 0, LSL); 534 case 0xc: 535 return new OrrRegCc(machInst, rdn, rdn, rm, 0, LSL); 536 case 0xd: 537 return new MulCc(machInst, rdn, rm, rdn); 538 case 0xe: 539 return new BicRegCc(machInst, rdn, rdn, rm, 0, LSL); 540 case 0xf: 541 return new MvnRegCc(machInst, rdn, INTREG_ZERO, rm, 0, LSL); 542 } 543 } 544 ''' 545}}; 546 547def format Thumb16SpecDataAndBx() {{ 548 decode_block = ''' 549 { 550 const IntRegIndex rdn = 551 (IntRegIndex)(uint32_t)(bits(machInst, 2, 0) | 552 (bits(machInst, 7) << 3)); 553 const IntRegIndex rm = (IntRegIndex)(uint32_t)bits(machInst, 6, 3); 554 switch (bits(machInst, 9, 8)) { 555 case 0x0: 556 return new AddReg(machInst, rdn, rdn, rm, 0, LSL); 557 case 0x1: 558 return new CmpRegCc(machInst, INTREG_ZERO, rdn, rm, 0, LSL); 559 case 0x2: 560 return new MovReg(machInst, rdn, INTREG_ZERO, rm, 0, LSL); 561 case 0x3: 562 if (bits(machInst, 7) == 0) { 563 return new BxReg(machInst, 564 (IntRegIndex)(uint32_t)bits(machInst, 6, 3), 565 COND_UC); 566 } else { 567 return new BlxReg(machInst, 568 (IntRegIndex)(uint32_t)bits(machInst, 6, 3), 569 COND_UC); 570 } 571 } 572 } 573 ''' 574}}; 575 576def format Thumb16Adr() {{ 577 decode_block = ''' 578 { 579 const IntRegIndex rd = (IntRegIndex)(uint32_t)bits(machInst, 10, 8); 580 const uint32_t imm8 = bits(machInst, 7, 0) << 2; 581 return new AdrImm(machInst, rd, (IntRegIndex)1, imm8, false); 582 } 583 ''' 584}}; 585 586def format Thumb16AddSp() {{ 587 decode_block = ''' 588 { 589 const IntRegIndex rd = (IntRegIndex)(uint32_t)bits(machInst, 10, 8); 590 const uint32_t imm8 = bits(machInst, 7, 0) << 2; 591 return new AddImm(machInst, rd, INTREG_SP, imm8, true); 592 } 593 ''' 594}}; 595 596def format Thumb16Misc() {{ 597 decode_block = ''' 598 { 599 switch (bits(machInst, 11, 8)) { 600 case 0x0: 601 if (bits(machInst, 7)) { 602 return new SubImm(machInst, INTREG_SP, INTREG_SP, 603 bits(machInst, 6, 0) << 2, true); 604 } else { 605 return new AddImm(machInst, INTREG_SP, INTREG_SP, 606 bits(machInst, 6, 0) << 2, true); 607 } 608 case 0x1: 609 return new Cbz(machInst, 610 (bits(machInst, 9) << 6) | 611 (bits(machInst, 7, 3) << 1), 612 (IntRegIndex)(uint32_t)bits(machInst, 2, 0)); 613 case 0x2: 614 switch (bits(machInst, 7, 6)) { 615 case 0x0: 616 return new WarnUnimplemented("sxth", machInst); 617 case 0x1: 618 return new WarnUnimplemented("sxtb", machInst); 619 case 0x2: 620 return new WarnUnimplemented("uxth", machInst); 621 case 0x3: 622 return new WarnUnimplemented("uxtb", machInst); 623 } 624 case 0x3: 625 return new Cbz(machInst, 626 (bits(machInst, 9) << 6) | 627 (bits(machInst, 7, 3) << 1), 628 (IntRegIndex)(uint32_t)bits(machInst, 2, 0)); 629 case 0x4: 630 case 0x5: 631 { 632 const uint32_t m = bits(machInst, 8); 633 const uint32_t regList = bits(machInst, 7, 0) | (m << 14); 634 return new LdmStm(machInst, INTREG_SP, false, false, false, 635 true, false, regList); 636 } 637 case 0x6: 638 { 639 const uint32_t opBits = bits(machInst, 7, 5); 640 if (opBits == 2) { 641 return new WarnUnimplemented("setend", machInst); 642 } else if (opBits == 3) { 643 return new WarnUnimplemented("cps", machInst); 644 } 645 } 646 case 0x9: 647 return new Cbnz(machInst, 648 (bits(machInst, 9) << 6) | 649 (bits(machInst, 7, 3) << 1), 650 (IntRegIndex)(uint32_t)bits(machInst, 2, 0)); 651 case 0xa: 652 { 653 IntRegIndex rd = (IntRegIndex)(uint32_t)bits(machInst, 2, 0); 654 IntRegIndex rm = (IntRegIndex)(uint32_t)bits(machInst, 5, 3); 655 switch (bits(machInst, 7, 6)) { 656 case 0x0: 657 return new Rev(machInst, rd, rm); 658 case 0x1: 659 return new Rev16(machInst, rd, rm); 660 case 0x3: 661 return new Revsh(machInst, rd, rm); 662 default: 663 break; 664 } 665 } 666 break; 667 case 0xb: 668 return new Cbnz(machInst, 669 (bits(machInst, 9) << 6) | 670 (bits(machInst, 7, 3) << 1), 671 (IntRegIndex)(uint32_t)bits(machInst, 2, 0)); 672 case 0xc: 673 case 0xd: 674 { 675 const uint32_t p = bits(machInst, 8); 676 const uint32_t regList = bits(machInst, 7, 0) | (p << 15); 677 return new LdmStm(machInst, INTREG_SP, true, true, false, 678 true, true, regList); 679 } 680 case 0xe: 681 return new WarnUnimplemented("bkpt", machInst); 682 case 0xf: 683 if (bits(machInst, 3, 0) != 0) 684 return new WarnUnimplemented("it", machInst); 685 switch (bits(machInst, 7, 4)) { 686 case 0x0: 687 return new WarnUnimplemented("nop", machInst); 688 case 0x1: 689 return new WarnUnimplemented("yield", machInst); 690 case 0x2: 691 return new WarnUnimplemented("wfe", machInst); 692 case 0x3: 693 return new WarnUnimplemented("wfi", machInst); 694 case 0x4: 695 return new WarnUnimplemented("sev", machInst); 696 default: 697 return new WarnUnimplemented("unallocated_hint", machInst); 698 } 699 default: 700 break; 701 } 702 return new Unknown(machInst); 703 } 704 ''' 705}}; 706 707def format Thumb32DataProcModImm() {{ 708 709 def decInst(mnem, dest="rd", op1="rn"): 710 return ''' 711 if (s) { 712 return new %(mnem)sImmCc(machInst, %(dest)s, 713 %(op1)s, imm, rotC); 714 } else { 715 return new %(mnem)sImm(machInst, %(dest)s, 716 %(op1)s, imm, rotC); 717 } 718 ''' % {"mnem" : mnem, "dest" : dest, "op1" : op1} 719 720 decode_block = ''' 721 { 722 const uint32_t op = bits(machInst, 24, 21); 723 const bool s = (bits(machInst, 20) == 1); 724 const IntRegIndex rn = (IntRegIndex)(uint32_t)bits(machInst, 19, 16); 725 const IntRegIndex rd = (IntRegIndex)(uint32_t)bits(machInst, 11, 8); 726 const uint32_t ctrlImm = bits(machInst.instBits, 26) << 3 | 727 bits(machInst, 14, 12); 728 const bool rotC = ctrlImm > 3; 729 const uint32_t dataImm = bits(machInst, 7, 0); 730 const uint32_t imm = modified_imm(ctrlImm, dataImm); 731 switch (op) { 732 case 0x0: 733 if (rd == INTREG_PC) { 734 %(tst)s 735 } else { 736 %(and)s 737 } 738 case 0x1: 739 %(bic)s 740 case 0x2: 741 if (rn == INTREG_PC) { 742 %(mov)s 743 } else { 744 %(orr)s 745 } 746 case 0x3: 747 if (rn == INTREG_PC) { 748 %(mvn)s 749 } else { 750 %(orn)s 751 } 752 case 0x4: 753 if (rd == INTREG_PC) { 754 %(teq)s 755 } else { 756 %(eor)s 757 } 758 case 0x8: 759 if (rd == INTREG_PC) { 760 %(cmn)s 761 } else { 762 %(add)s 763 } 764 case 0xa: 765 %(adc)s 766 case 0xb: 767 %(sbc)s 768 case 0xd: 769 if (rd == INTREG_PC) { 770 %(cmp)s 771 } else { 772 %(sub)s 773 } 774 case 0xe: 775 %(rsb)s 776 default: 777 return new Unknown(machInst); 778 } 779 } 780 ''' % { 781 "tst" : decInst("Tst", "INTREG_ZERO"), 782 "and" : decInst("And"), 783 "bic" : decInst("Bic"), 784 "mov" : decInst("Mov", op1="INTREG_ZERO"), 785 "orr" : decInst("Orr"), 786 "mvn" : decInst("Mvn", op1="INTREG_ZERO"), 787 "orn" : decInst("Orn"), 788 "teq" : decInst("Teq", dest="INTREG_ZERO"), 789 "eor" : decInst("Eor"), 790 "cmn" : decInst("Cmn", dest="INTREG_ZERO"), 791 "add" : decInst("Add"), 792 "adc" : decInst("Adc"), 793 "sbc" : decInst("Sbc"), 794 "cmp" : decInst("Cmp", dest="INTREG_ZERO"), 795 "sub" : decInst("Sub"), 796 "rsb" : decInst("Rsb") 797 } 798}}; 799 800def format Thumb32DataProcPlainBin() {{ 801 decode_block = ''' 802 { 803 const uint32_t op = bits(machInst, 24, 20); 804 const IntRegIndex rn = (IntRegIndex)(uint32_t)bits(machInst, 19, 16); 805 const IntRegIndex rd = (IntRegIndex)(uint32_t)bits(machInst, 11, 8); 806 switch (op) { 807 case 0x0: 808 { 809 const uint32_t imm = bits(machInst, 7, 0) | 810 (bits(machInst, 14, 12) << 8) | 811 (bits(machInst, 26) << 11); 812 if (rn == 0xf) { 813 return new AdrImm(machInst, rd, (IntRegIndex)1, 814 imm, false); 815 } else { 816 return new AddImm(machInst, rd, rn, imm, true); 817 } 818 } 819 case 0x4: 820 { 821 const uint32_t imm = bits(machInst, 7, 0) | 822 (bits(machInst, 14, 12) << 8) | 823 (bits(machInst, 26) << 11) | 824 (bits(machInst, 19, 16) << 12); 825 return new MovImm(machInst, rd, INTREG_ZERO, imm, true); 826 } 827 case 0xa: 828 { 829 const uint32_t imm = bits(machInst, 7, 0) | 830 (bits(machInst, 14, 12) << 8) | 831 (bits(machInst, 26) << 11); 832 if (rn == 0xf) { 833 return new AdrImm(machInst, rd, (IntRegIndex)0, 834 imm, false); 835 } else { 836 return new SubImm(machInst, rd, rn, imm, true); 837 } 838 } 839 case 0xc: 840 { 841 const uint32_t imm = bits(machInst, 7, 0) | 842 (bits(machInst, 14, 12) << 8) | 843 (bits(machInst, 26) << 11) | 844 (bits(machInst, 19, 16) << 12); 845 return new MovtImm(machInst, rd, rd, imm, true); 846 } 847 case 0x12: 848 if (!(bits(machInst, 14, 12) || bits(machInst, 7, 6))) { 849 return new WarnUnimplemented("ssat16", machInst); 850 } 851 // Fall through on purpose... 852 case 0x10: 853 return new WarnUnimplemented("ssat", machInst); 854 case 0x14: 855 return new WarnUnimplemented("sbfx", machInst); 856 case 0x16: 857 if (rn == 0xf) { 858 return new WarnUnimplemented("bfc", machInst); 859 } else { 860 return new WarnUnimplemented("bfi", machInst); 861 } 862 case 0x1a: 863 if (!(bits(machInst, 14, 12) || bits(machInst, 7, 6))) { 864 return new WarnUnimplemented("usat16", machInst); 865 } 866 // Fall through on purpose... 867 case 0x18: 868 return new WarnUnimplemented("usat", machInst); 869 case 0x1c: 870 return new WarnUnimplemented("ubfx", machInst); 871 default: 872 return new Unknown(machInst); 873 } 874 } 875 ''' 876}}; 877 878def format Thumb32DataProcShiftReg() {{ 879 880 def decInst(mnem, dest="rd", op1="rn"): 881 return ''' 882 if (s) { 883 return new %(mnem)sRegCc(machInst, %(dest)s, 884 %(op1)s, rm, amt, type); 885 } else { 886 return new %(mnem)sReg(machInst, %(dest)s, 887 %(op1)s, rm, amt, type); 888 } 889 ''' % {"mnem" : mnem, "dest" : dest, "op1" : op1} 890 891 decode_block = ''' 892 { 893 const uint32_t op = bits(machInst, 24, 21); 894 const bool s = (bits(machInst, 20) == 1); 895 const IntRegIndex rn = (IntRegIndex)(uint32_t)bits(machInst, 19, 16); 896 const IntRegIndex rd = (IntRegIndex)(uint32_t)bits(machInst, 11, 8); 897 const IntRegIndex rm = (IntRegIndex)(uint32_t)bits(machInst, 3, 0); 898 const uint32_t amt = (bits(machInst, 14, 12) << 2) | 899 bits(machInst, 7, 6); 900 const ArmShiftType type = (ArmShiftType)(uint32_t)bits(machInst, 5, 4); 901 switch (op) { 902 case 0x0: 903 if (rd == INTREG_PC) { 904 %(tst)s 905 } else { 906 %(and)s 907 } 908 case 0x1: 909 %(bic)s 910 case 0x2: 911 if (rn == INTREG_PC) { 912 %(mov)s 913 } else { 914 %(orr)s 915 } 916 case 0x3: 917 if (rn == INTREG_PC) { 918 %(mvn)s 919 } else { 920 %(orn)s 921 } 922 case 0x4: 923 if (rd == INTREG_PC) { 924 %(teq)s 925 } else { 926 %(eor)s 927 } 928 case 0x6: 929 return new WarnUnimplemented("pkh", machInst); 930 case 0x8: 931 if (rd == INTREG_PC) { 932 %(cmn)s 933 } else { 934 %(add)s 935 } 936 case 0xa: 937 %(adc)s 938 case 0xb: 939 %(sbc)s 940 case 0xd: 941 if (rd == INTREG_PC) { 942 %(cmp)s 943 } else { 944 %(sub)s 945 } 946 case 0xe: 947 %(rsb)s 948 default: 949 return new Unknown(machInst); 950 } 951 } 952 ''' % { 953 "tst" : decInst("Tst", "INTREG_ZERO"), 954 "and" : decInst("And"), 955 "bic" : decInst("Bic"), 956 "mov" : decInst("Mov", op1="INTREG_ZERO"), 957 "orr" : decInst("Orr"), 958 "mvn" : decInst("Mvn", op1="INTREG_ZERO"), 959 "orn" : decInst("Orn"), 960 "teq" : decInst("Teq", "INTREG_ZERO"), 961 "eor" : decInst("Eor"), 962 "cmn" : decInst("Cmn", "INTREG_ZERO"), 963 "add" : decInst("Add"), 964 "adc" : decInst("Adc"), 965 "sbc" : decInst("Sbc"), 966 "cmp" : decInst("Cmp", "INTREG_ZERO"), 967 "sub" : decInst("Sub"), 968 "rsb" : decInst("Rsb") 969 } 970}}; 971