test/MC/ARM/basic-thumb-instructions.s

   1 @ RUN: llvm-mc -triple=thumbv6-apple-darwin -show-encoding < %s | FileCheck %s
   2   .syntax unified
   3   .globl _func
   4
   5 @ Check that the assembler can handle the documented syntax from the ARM ARM.
   6 @ For complex constructs like shifter operands, check more thoroughly for them
   7 @ once then spot check that following instructions accept the form generally.
   8 @ This gives us good coverage while keeping the overall size of the test
   9 @ more reasonable.
  10
  11
  12 @ FIXME: Some 3-operand instructions have a 2-operand assembly syntax.
  13
  14 _func:
  15 @ CHECK: _func
  16
  17 @------------------------------------------------------------------------------
  18 @ ADC (register)
  19 @------------------------------------------------------------------------------
  20         adcs r4, r6
  21
  22 @ CHECK: adcs   r4, r6                  @ encoding: [0x74,0x41]
  23
  24
  25 @------------------------------------------------------------------------------
  26 @ ADD (immediate)
  27 @------------------------------------------------------------------------------
  28         adds r1, r2, #3
  29 @ When Rd is not explicitly specified, encoding T2 is preferred even though
  30 @ the literal is in the range [0,7] which would allow encoding T1.
  31         adds r2, #3
  32         adds r2, #8
  33
  34 @ CHECK: adds   r1, r2, #3              @ encoding: [0xd1,0x1c]
  35 @ CHECK: adds   r2, #3                  @ encoding: [0x03,0x32]
  36 @ CHECK: adds   r2, #8                  @ encoding: [0x08,0x32]
  37
  38
  39 @------------------------------------------------------------------------------
  40 @ ADD (register)
  41 @------------------------------------------------------------------------------
  42         adds r1, r2, r3
  43         add r2, r8
  44
  45 @ CHECK: adds   r1, r2, r3              @ encoding: [0xd1,0x18]
  46 @ CHECK: add    r2, r8                  @ encoding: [0x42,0x44]
  47
  48
  49 @------------------------------------------------------------------------------
  50 @ ADD (SP plus immediate)
  51 @------------------------------------------------------------------------------
  52         add sp, #4
  53         add sp, #508
  54         add sp, sp, #4
  55         add r2, sp, #8
  56         add r2, sp, #1020
  57
  58 @ CHECK: add    sp, #4                  @ encoding: [0x01,0xb0]
  59 @ CHECK: add    sp, #508                @ encoding: [0x7f,0xb0]
  60 @ CHECK: add    sp, #4                  @ encoding: [0x01,0xb0]
  61 @ CHECK: add    r2, sp, #8              @ encoding: [0x02,0xaa]
  62 @ CHECK: add    r2, sp, #1020           @ encoding: [0xff,0xaa]
  63
  64
  65 @------------------------------------------------------------------------------
  66 @ ADD (SP plus register)
  67 @------------------------------------------------------------------------------
  68         add sp, r3
  69         add r2, sp, r2
  70
  71 @ CHECK: add    sp, r3                  @ encoding: [0x9d,0x44]
  72 @ CHECK: add    r2, sp, r2              @ encoding: [0x6a,0x44]
  73
  74
  75 @------------------------------------------------------------------------------
  76 @ ADR
  77 @------------------------------------------------------------------------------
  78         adr r2, _baz
  79         adr     r2, #3
  80
  81 @ CHECK: adr    r2, _baz                @ encoding: [A,0xa2]
  82             @   fixup A - offset: 0, value: _baz, kind: fixup_thumb_adr_pcrel_10
  83 @ CHECK: adr    r2, #3                  @ encoding: [0x03,0xa2]
  84
  85 @------------------------------------------------------------------------------
  86 @ ASR (immediate)
  87 @------------------------------------------------------------------------------
  88         asrs r2, r3, #32
  89         asrs r2, r3, #5
  90         asrs r2, r3, #1
  91
  92 @ CHECK: asrs   r2, r3, #32             @ encoding: [0x1a,0x10]
  93 @ CHECK: asrs   r2, r3, #5              @ encoding: [0x5a,0x11]
  94 @ CHECK: asrs   r2, r3, #1              @ encoding: [0x5a,0x10]
  95
  96
  97 @------------------------------------------------------------------------------
  98 @ ASR (register)
  99 @------------------------------------------------------------------------------
 100         asrs r5, r2
 101
 102 @ CHECK: asrs   r5, r2                  @ encoding: [0x15,0x41]
 103
 104
 105 @------------------------------------------------------------------------------
 106 @ B
 107 @------------------------------------------------------------------------------
 108         b _baz
 109         beq _bar
 110         b       #1838
 111         b       #-420
 112
 113 @ CHECK: b      _baz                    @ encoding: [A,0xe0'A']
 114              @   fixup A - offset: 0, value: _baz, kind: fixup_arm_thumb_br
 115 @ CHECK: beq    _bar                    @ encoding: [A,0xd0]
 116              @   fixup A - offset: 0, value: _bar, kind: fixup_arm_thumb_bcc
 117 @ CHECK: b       #1838                   @ encoding: [0x97,0xe3]
 118 @ CHECK: b       #-420                   @ encoding: [0x2e,0xe7]
 119
 120 @------------------------------------------------------------------------------
 121 @ BICS
 122 @------------------------------------------------------------------------------
 123         bics r1, r6
 124
 125 @ CHECK: bics   r1, r6                  @ encoding: [0xb1,0x43]
 126
 127
 128 @------------------------------------------------------------------------------
 129 @ BKPT
 130 @------------------------------------------------------------------------------
 131         bkpt #0
 132         bkpt #255
 133
 134 @ CHECK: bkpt   #0                      @ encoding: [0x00,0xbe]
 135 @ CHECK: bkpt   #255                    @ encoding: [0xff,0xbe]
 136
 137
 138 @------------------------------------------------------------------------------
 139 @ BL/BLX (immediate)
 140 @------------------------------------------------------------------------------
 141         bl _bar
 142         blx _baz
 143
 144 @ CHECK: bl     _bar                    @ encoding: [A,0xf0'A',A,0xf8'A']
 145              @   fixup A - offset: 0, value: _bar, kind: fixup_arm_thumb_bl
 146 @ CHECK: blx    _baz                    @ encoding: [A,0xf0'A',A,0xe8'A']
 147              @   fixup A - offset: 0, value: _baz, kind: fixup_arm_thumb_blx
 148
 149
 150 @------------------------------------------------------------------------------
 151 @ BLX (register)
 152 @------------------------------------------------------------------------------
 153         blx r4
 154
 155 @ CHECK: blx    r4                      @ encoding: [0xa0,0x47]
 156
 157
 158 @------------------------------------------------------------------------------
 159 @ BX
 160 @------------------------------------------------------------------------------
 161         bx r2
 162
 163 @ CHECK: bx     r2                      @ encoding: [0x10,0x47]
 164
 165
 166 @------------------------------------------------------------------------------
 167 @ CMN
 168 @------------------------------------------------------------------------------
 169
 170         cmn r5, r1
 171
 172 @ CHECK: cmn    r5, r1                  @ encoding: [0xcd,0x42]
 173
 174
 175 @------------------------------------------------------------------------------
 176 @ CMP
 177 @------------------------------------------------------------------------------
 178         cmp r6, #32
 179         cmp r3, r4
 180         cmp r8, r1
 181
 182 @ CHECK: cmp    r6, #32                 @ encoding: [0x20,0x2e]
 183 @ CHECK: cmp    r3, r4                  @ encoding: [0xa3,0x42]
 184 @ CHECK: cmp    r8, r1                  @ encoding: [0x88,0x45]
 185
 186 @------------------------------------------------------------------------------
 187 @ EOR
 188 @------------------------------------------------------------------------------
 189         eors r4, r5
 190
 191 @ CHECK: eors   r4, r5                  @ encoding: [0x6c,0x40]
 192
 193
 194 @------------------------------------------------------------------------------
 195 @ LDM
 196 @------------------------------------------------------------------------------
 197         ldm r3, {r0, r1, r2, r3, r4, r5, r6, r7}
 198         ldm r2!, {r1, r3, r4, r5, r7}
 199         ldm r1, {r1}
 200
 201 @ CHECK: ldm    r3, {r0, r1, r2, r3, r4, r5, r6, r7} @ encoding: [0xff,0xcb]
 202 @ CHECK: ldm    r2!, {r1, r3, r4, r5, r7} @ encoding: [0xba,0xca]
 203 @ CHECK: ldm    r1, {r1}                @ encoding: [0x02,0xc9]
 204
 205
 206 @------------------------------------------------------------------------------
 207 @ LDR (immediate)
 208 @------------------------------------------------------------------------------
 209         ldr r1, [r5]
 210         ldr r2, [r6, #32]
 211         ldr r3, [r7, #124]
 212         ldr r1, [sp]
 213         ldr r2, [sp, #24]
 214         ldr r3, [sp, #1020]
 215
 216
 217 @ CHECK: ldr    r1, [r5]                @ encoding: [0x29,0x68]
 218 @ CHECK: ldr    r2, [r6, #32]           @ encoding: [0x32,0x6a]
 219 @ CHECK: ldr    r3, [r7, #124]          @ encoding: [0xfb,0x6f]
 220 @ CHECK: ldr    r1, [sp]                @ encoding: [0x00,0x99]
 221 @ CHECK: ldr    r2, [sp, #24]           @ encoding: [0x06,0x9a]
 222 @ CHECK: ldr    r3, [sp, #1020]         @ encoding: [0xff,0x9b]
 223
 224
 225 @------------------------------------------------------------------------------
 226 @ LDR (literal)
 227 @------------------------------------------------------------------------------
 228         ldr r1, _foo
 229         ldr     r3, #604
 230         ldr     r3, #368
 231
 232 @ CHECK: ldr    r1, _foo                @ encoding: [A,0x49]
 233              @   fixup A - offset: 0, value: _foo, kind: fixup_arm_thumb_cp
 234 @ CHECK: ldr     r3, #604                @ encoding: [0x97,0x4b]
 235 @ CHECK: ldr     r3, #368                @ encoding: [0x5c,0x4b]
 236
 237 @------------------------------------------------------------------------------
 238 @ LDR (register)
 239 @------------------------------------------------------------------------------
 240         ldr r1, [r2, r3]
 241
 242 @ CHECK: ldr    r1, [r2, r3]            @ encoding: [0xd1,0x58]
 243
 244
 245 @------------------------------------------------------------------------------
 246 @ LDRB (immediate)
 247 @------------------------------------------------------------------------------
 248         ldrb r4, [r3]
 249         ldrb r5, [r6, #0]
 250         ldrb r6, [r7, #31]
 251
 252 @ CHECK: ldrb   r4, [r3]                @ encoding: [0x1c,0x78]
 253 @ CHECK: ldrb   r5, [r6]                @ encoding: [0x35,0x78]
 254 @ CHECK: ldrb   r6, [r7, #31]           @ encoding: [0xfe,0x7f]
 255
 256
 257 @------------------------------------------------------------------------------
 258 @ LDRB (register)
 259 @------------------------------------------------------------------------------
 260         ldrb r6, [r4, r5]
 261
 262 @ CHECK: ldrb   r6, [r4, r5]            @ encoding: [0x66,0x5d]
 263
 264
 265 @------------------------------------------------------------------------------
 266 @ LDRH (immediate)
 267 @------------------------------------------------------------------------------
 268         ldrh r3, [r3]
 269         ldrh r4, [r6, #2]
 270         ldrh r5, [r7, #62]
 271
 272 @ CHECK: ldrh   r3, [r3]                @ encoding: [0x1b,0x88]
 273 @ CHECK: ldrh   r4, [r6, #2]            @ encoding: [0x74,0x88]
 274 @ CHECK: ldrh   r5, [r7, #62]           @ encoding: [0xfd,0x8f]
 275
 276
 277 @------------------------------------------------------------------------------
 278 @ LDRH (register)
 279 @------------------------------------------------------------------------------
 280         ldrh r6, [r2, r6]
 281
 282 @ CHECK: ldrh   r6, [r2, r6]            @ encoding: [0x96,0x5b]
 283
 284
 285 @------------------------------------------------------------------------------
 286 @ LDRSB/LDRSH
 287 @------------------------------------------------------------------------------
 288         ldrsb r6, [r2, r6]
 289         ldrsh r3, [r7, r1]
 290
 291 @ CHECK: ldrsb  r6, [r2, r6]            @ encoding: [0x96,0x57]
 292 @ CHECK: ldrsh  r3, [r7, r1]            @ encoding: [0x7b,0x5e]
 293
 294
 295 @------------------------------------------------------------------------------
 296 @ LSL (immediate)
 297 @------------------------------------------------------------------------------
 298         lsls r4, r5, #0
 299         lsls r4, r5, #4
 300
 301 @ CHECK: lsls   r4, r5, #0              @ encoding: [0x2c,0x00]
 302 @ CHECK: lsls   r4, r5, #4              @ encoding: [0x2c,0x01]
 303
 304
 305 @------------------------------------------------------------------------------
 306 @ LSL (register)
 307 @------------------------------------------------------------------------------
 308         lsls r2, r6
 309
 310 @ CHECK: lsls   r2, r6                  @ encoding: [0xb2,0x40]
 311
 312
 313 @------------------------------------------------------------------------------
 314 @ LSR (immediate)
 315 @------------------------------------------------------------------------------
 316         lsrs r1, r3, #1
 317         lsrs r1, r3, #32
 318
 319 @ CHECK: lsrs   r1, r3, #1              @ encoding: [0x59,0x08]
 320 @ CHECK: lsrs   r1, r3, #32             @ encoding: [0x19,0x08]
 321
 322
 323 @------------------------------------------------------------------------------
 324 @ LSR (register)
 325 @------------------------------------------------------------------------------
 326         lsrs r2, r6
 327
 328 @ CHECK: lsrs   r2, r6                  @ encoding: [0xf2,0x40]
 329
 330
 331 @------------------------------------------------------------------------------
 332 @ MOV (immediate)
 333 @------------------------------------------------------------------------------
 334         movs r2, #0
 335         movs r2, #255
 336         movs r2, #23
 337
 338 @ CHECK: movs   r2, #0                  @ encoding: [0x00,0x22]
 339 @ CHECK: movs   r2, #255                @ encoding: [0xff,0x22]
 340 @ CHECK: movs   r2, #23                 @ encoding: [0x17,0x22]
 341
 342
 343 @------------------------------------------------------------------------------
 344 @ MOV (register)
 345 @------------------------------------------------------------------------------
 346         mov r3, r4
 347         movs r1, r3
 348
 349 @ CHECK: mov    r3, r4                  @ encoding: [0x23,0x46]
 350 @ CHECK: movs   r1, r3                  @ encoding: [0x19,0x00]
 351
 352
 353 @------------------------------------------------------------------------------
 354 @ MUL
 355 @------------------------------------------------------------------------------
 356         muls r1, r2, r1
 357         muls r3, r4
 358
 359 @ CHECK: muls   r1, r2, r1              @ encoding: [0x51,0x43]
 360 @ CHECK: muls   r3, r4, r3              @ encoding: [0x63,0x43]
 361
 362
 363 @------------------------------------------------------------------------------
 364 @ MVN
 365 @------------------------------------------------------------------------------
 366         mvns r6, r3
 367
 368 @ CHECK: mvns   r6, r3                  @ encoding: [0xde,0x43]
 369
 370
 371 @------------------------------------------------------------------------------
 372 @ NEG
 373 @------------------------------------------------------------------------------
 374         negs r3, r4
 375
 376 @ CHECK: rsbs   r3, r4, #0              @ encoding: [0x63,0x42]
 377
 378
 379 @------------------------------------------------------------------------------
 380 @ NOP
 381 @------------------------------------------------------------------------------
 382         nop
 383
 384 @ CHECK: nop                            @ encoding: [0xc0,0x46]
 385
 386
 387 @------------------------------------------------------------------------------
 388 @ ORR
 389 @------------------------------------------------------------------------------
 390         orrs  r3, r4
 391
 392 @ CHECK-ERRORS:         orrs    r3, r4                  @ encoding: [0x23,0x43]
 393
 394
 395 @------------------------------------------------------------------------------
 396 @ POP
 397 @------------------------------------------------------------------------------
 398         pop {r2, r3, r6}
 399
 400 @ CHECK: pop    {r2, r3, r6}            @ encoding: [0x4c,0xbc]
 401
 402
 403 @------------------------------------------------------------------------------
 404 @ PUSH
 405 @------------------------------------------------------------------------------
 406         push {r1, r2, r7}
 407
 408 @ CHECK: push   {r1, r2, r7}            @ encoding: [0x86,0xb4]
 409
 410
 411 @------------------------------------------------------------------------------
 412 @ REV/REV16/REVSH
 413 @------------------------------------------------------------------------------
 414         rev r6, r3
 415         rev16 r7, r2
 416         revsh r5, r1
 417
 418 @ CHECK: rev    r6, r3                  @ encoding: [0x1e,0xba]
 419 @ CHECK: rev16  r7, r2                  @ encoding: [0x57,0xba]
 420 @ CHECK: revsh  r5, r1                  @ encoding: [0xcd,0xba]
 421
 422
 423 @------------------------------------------------------------------------------
 424 @ ROR
 425 @------------------------------------------------------------------------------
 426         rors r2, r7
 427
 428 @ CHECK: rors   r2, r7                  @ encoding: [0xfa,0x41]
 429
 430
 431 @------------------------------------------------------------------------------
 432 @ RSB
 433 @------------------------------------------------------------------------------
 434         rsbs r1, r3, #0
 435
 436 @ CHECK: rsbs   r1, r3, #0              @ encoding: [0x59,0x42]
 437
 438
 439 @------------------------------------------------------------------------------
 440 @ SBC
 441 @------------------------------------------------------------------------------
 442         sbcs r4, r3
 443
 444 @ CHECK: sbcs   r4, r3                  @ encoding: [0x9c,0x41]
 445
 446
 447 @------------------------------------------------------------------------------
 448 @ SETEND
 449 @------------------------------------------------------------------------------
 450         setend be
 451         setend le
 452
 453 @ CHECK: setend be                      @ encoding: [0x58,0xb6]
 454 @ CHECK: setend le                      @ encoding: [0x50,0xb6]
 455
 456
 457 @------------------------------------------------------------------------------
 458 @ STM
 459 @------------------------------------------------------------------------------
 460         stm r1!, {r2, r6}
 461         stm r1!, {r1, r2, r3, r7}
 462
 463 @ CHECK: stm    r1!, {r2, r6}           @ encoding: [0x44,0xc1]
 464 @ CHECK: stm    r1!, {r1, r2, r3, r7}   @ encoding: [0x8e,0xc1]
 465
 466
 467 @------------------------------------------------------------------------------
 468 @ STR (immediate)
 469 @------------------------------------------------------------------------------
 470         str r2, [r7]
 471         str r2, [r7, #0]
 472         str r5, [r1, #4]
 473         str r3, [r7, #124]
 474         str r2, [sp]
 475         str r3, [sp, #0]
 476         str r4, [sp, #20]
 477         str r5, [sp, #1020]
 478
 479 @ CHECK: str    r2, [r7]                @ encoding: [0x3a,0x60]
 480 @ CHECK: str    r2, [r7]                @ encoding: [0x3a,0x60]
 481 @ CHECK: str    r5, [r1, #4]            @ encoding: [0x4d,0x60]
 482 @ CHECK: str    r3, [r7, #124]          @ encoding: [0xfb,0x67]
 483 @ CHECK: str    r2, [sp]                @ encoding: [0x00,0x92]
 484 @ CHECK: str    r3, [sp]                @ encoding: [0x00,0x93]
 485 @ CHECK: str    r4, [sp, #20]           @ encoding: [0x05,0x94]
 486 @ CHECK: str    r5, [sp, #1020]         @ encoding: [0xff,0x95]
 487
 488
 489 @------------------------------------------------------------------------------
 490 @ STR (register)
 491 @------------------------------------------------------------------------------
 492         str r2, [r7, r3]
 493
 494 @ CHECK: str    r2, [r7, r3]            @ encoding: [0xfa,0x50]
 495
 496
 497 @------------------------------------------------------------------------------
 498 @ STRB (immediate)
 499 @------------------------------------------------------------------------------
 500         strb r4, [r3]
 501         strb r5, [r6, #0]
 502         strb r6, [r7, #31]
 503
 504 @ CHECK: strb   r4, [r3]                @ encoding: [0x1c,0x70]
 505 @ CHECK: strb   r5, [r6]                @ encoding: [0x35,0x70]
 506 @ CHECK: strb   r6, [r7, #31]           @ encoding: [0xfe,0x77]
 507
 508
 509 @------------------------------------------------------------------------------
 510 @ STRB (register)
 511 @------------------------------------------------------------------------------
 512         strb r6, [r4, r5]
 513
 514 @ CHECK: strb   r6, [r4, r5]            @ encoding: [0x66,0x55]
 515
 516
 517 @------------------------------------------------------------------------------
 518 @ STRH (immediate)
 519 @------------------------------------------------------------------------------
 520         strh r3, [r3]
 521         strh r4, [r6, #2]
 522         strh r5, [r7, #62]
 523
 524 @ CHECK: strh   r3, [r3]                @ encoding: [0x1b,0x80]
 525 @ CHECK: strh   r4, [r6, #2]            @ encoding: [0x74,0x80]
 526 @ CHECK: strh   r5, [r7, #62]           @ encoding: [0xfd,0x87]
 527
 528
 529 @------------------------------------------------------------------------------
 530 @ STRH (register)
 531 @------------------------------------------------------------------------------
 532         strh r6, [r2, r6]
 533
 534 @ CHECK: strh   r6, [r2, r6]            @ encoding: [0x96,0x53]
 535
 536
 537 @------------------------------------------------------------------------------
 538 @ SUB (immediate)
 539 @------------------------------------------------------------------------------
 540         subs r1, r2, #3
 541         subs r2, #3
 542         subs r2, #8
 543
 544 @ CHECK: subs   r1, r2, #3              @ encoding: [0xd1,0x1e]
 545 @ CHECK: subs   r2, #3                  @ encoding: [0x03,0x3a]
 546 @ CHECK: subs   r2, #8                  @ encoding: [0x08,0x3a]
 547
 548
 549 @------------------------------------------------------------------------------
 550 @ SUB (SP minus immediate)
 551 @------------------------------------------------------------------------------
 552         sub sp, #12
 553         sub sp, sp, #508
 554
 555 @ CHECK: sub    sp, #12                 @ encoding: [0x83,0xb0]
 556 @ CHECK: sub    sp, #508                @ encoding: [0xff,0xb0]
 557
 558
 559 @------------------------------------------------------------------------------
 560 @ SUB (register)
 561 @------------------------------------------------------------------------------
 562         subs r1, r2, r3
 563
 564 @ CHECK: subs   r1, r2, r3              @ encoding: [0xd1,0x1a]
 565
 566
 567 @------------------------------------------------------------------------------
 568 @ SVC
 569 @------------------------------------------------------------------------------
 570         svc #0
 571         svc #255
 572
 573 @ CHECK: svc    #0                      @ encoding: [0x00,0xdf]
 574 @ CHECK: svc    #255                    @ encoding: [0xff,0xdf]
 575
 576
 577 @------------------------------------------------------------------------------
 578 @ SXTB/SXTH
 579 @------------------------------------------------------------------------------
 580         sxtb r3, r5
 581         sxth r3, r5
 582
 583 @ CHECK: sxtb   r3, r5                  @ encoding: [0x6b,0xb2]
 584 @ CHECK: sxth   r3, r5                  @ encoding: [0x2b,0xb2]
 585
 586
 587 @------------------------------------------------------------------------------
 588 @ TST
 589 @------------------------------------------------------------------------------
 590         tst r6, r1
 591
 592 @ CHECK: tst    r6, r1                  @ encoding: [0x0e,0x42]
 593
 594
 595 @------------------------------------------------------------------------------
 596 @ UXTB/UXTH
 597 @------------------------------------------------------------------------------
 598         uxtb  r7, r2
 599         uxth  r1, r4
 600
 601 @ CHECK: uxtb   r7, r2                  @ encoding: [0xd7,0xb2]
 602 @ CHECK: uxth   r1, r4                  @ encoding: [0xa1,0xb2]
 603
 604
 605 @------------------------------------------------------------------------------
 606 @ WFE/WFI/YIELD
 607 @------------------------------------------------------------------------------
 608         wfe
 609         wfi
 610         yield
 611
 612 @ CHECK: wfe                             @ encoding: [0x20,0xbf]
 613 @ CHECK: wfi                             @ encoding: [0x30,0xbf]
 614 @ CHECK: yield                           @ encoding: [0x10,0xbf]