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

   1 @---
   2 @ Run these test in both Thumb1 and Thumb2 modes, as all of the encodings
   3 @ should be valid, and parse the same, in both.
   4 @---
   5 @ RUN: llvm-mc -triple=thumbv6-apple-darwin -show-encoding < %s | FileCheck %s
   6 @ RUN: llvm-mc -triple=thumbv7-apple-darwin -show-encoding < %s | FileCheck %s
   7   .syntax unified
   8   .globl _func
   9
  10 @ Check that the assembler can handle the documented syntax from the ARM ARM.
  11 @ For complex constructs like shifter operands, check more thoroughly for them
  12 @ once then spot check that following instructions accept the form generally.
  13 @ This gives us good coverage while keeping the overall size of the test
  14 @ more reasonable.
  15
  16
  17 @ FIXME: Some 3-operand instructions have a 2-operand assembly syntax.
  18
  19 _func:
  20 @ CHECK: _func
  21
  22 @------------------------------------------------------------------------------
  23 @ ADC (register)
  24 @------------------------------------------------------------------------------
  25         adcs r4, r6
  26
  27 @ CHECK: adcs   r4, r6                  @ encoding: [0x74,0x41]
  28
  29
  30 @------------------------------------------------------------------------------
  31 @ ADD (immediate)
  32 @------------------------------------------------------------------------------
  33         adds r1, r2, #3
  34 @ When Rd is not explicitly specified, encoding T2 is preferred even though
  35 @ the literal is in the range [0,7] which would allow encoding T1.
  36         adds r2, #3
  37         adds r2, #8
  38
  39 @ CHECK: adds   r1, r2, #3              @ encoding: [0xd1,0x1c]
  40 @ CHECK: adds   r2, #3                  @ encoding: [0x03,0x32]
  41 @ CHECK: adds   r2, #8                  @ encoding: [0x08,0x32]
  42
  43
  44 @------------------------------------------------------------------------------
  45 @ ADD (register)
  46 @------------------------------------------------------------------------------
  47         adds r1, r2, r3
  48         add r2, r8
  49
  50 @ CHECK: adds   r1, r2, r3              @ encoding: [0xd1,0x18]
  51 @ CHECK: add    r2, r8                  @ encoding: [0x42,0x44]
  52
  53
  54 @------------------------------------------------------------------------------
  55 @ ADD (SP plus immediate)
  56 @------------------------------------------------------------------------------
  57         add sp, #4
  58         add sp, #508
  59         add sp, sp, #4
  60         add r2, sp, #8
  61         add r2, sp, #1020
  62         add sp, sp, #-8
  63         add sp, #-8
  64
  65 @ CHECK: add    sp, #4                  @ encoding: [0x01,0xb0]
  66 @ CHECK: add    sp, #508                @ encoding: [0x7f,0xb0]
  67 @ CHECK: add    sp, #4                  @ encoding: [0x01,0xb0]
  68 @ CHECK: add    r2, sp, #8              @ encoding: [0x02,0xaa]
  69 @ CHECK: add    r2, sp, #1020           @ encoding: [0xff,0xaa]
  70 @ CHECK: sub    sp, #8                  @ encoding: [0x82,0xb0]
  71 @ CHECK: sub    sp, #8                  @ encoding: [0x82,0xb0]
  72
  73
  74 @------------------------------------------------------------------------------
  75 @ ADD (SP plus register)
  76 @------------------------------------------------------------------------------
  77         add sp, r3
  78         add r2, sp, r2
  79
  80 @ CHECK: add    sp, r3                  @ encoding: [0x9d,0x44]
  81 @ CHECK: add    r2, sp, r2              @ encoding: [0x6a,0x44]
  82
  83
  84 @------------------------------------------------------------------------------
  85 @ ADR
  86 @------------------------------------------------------------------------------
  87         adr r2, _baz
  88         adr     r2, #3
  89
  90 @ CHECK: adr    r2, _baz                @ encoding: [A,0xa2]
  91             @   fixup A - offset: 0, value: _baz, kind: fixup_thumb_adr_pcrel_10
  92 @ CHECK: adr    r2, #3                  @ encoding: [0x03,0xa2]
  93
  94 @------------------------------------------------------------------------------
  95 @ ASR (immediate)
  96 @------------------------------------------------------------------------------
  97         asrs r2, r3, #32
  98         asrs r2, r3, #5
  99         asrs r2, r3, #1
 100         asrs r5, #21
 101         asrs r5, r5, #21
 102         asrs r3, r5, #21
 103
 104 @ CHECK: asrs   r2, r3, #32             @ encoding: [0x1a,0x10]
 105 @ CHECK: asrs   r2, r3, #5              @ encoding: [0x5a,0x11]
 106 @ CHECK: asrs   r2, r3, #1              @ encoding: [0x5a,0x10]
 107 @ CHECK: asrs   r5, r5, #21             @ encoding: [0x6d,0x15]
 108 @ CHECK: asrs   r5, r5, #21             @ encoding: [0x6d,0x15]
 109 @ CHECK: asrs   r3, r5, #21             @ encoding: [0x6b,0x15]
 110
 111
 112 @------------------------------------------------------------------------------
 113 @ ASR (register)
 114 @------------------------------------------------------------------------------
 115         asrs r5, r2
 116
 117 @ CHECK: asrs   r5, r2                  @ encoding: [0x15,0x41]
 118
 119
 120 @------------------------------------------------------------------------------
 121 @ B
 122 @------------------------------------------------------------------------------
 123         b _baz
 124         beq _bar
 125         b       #1838
 126         b       #-420
 127         beq     #336
 128         beq     #160
 129
 130 @ CHECK: b      _baz                    @ encoding: [A,0xe0'A']
 131              @   fixup A - offset: 0, value: _baz, kind: fixup_arm_thumb_br
 132 @ CHECK: beq    _bar                    @ encoding: [A,0xd0]
 133              @   fixup A - offset: 0, value: _bar, kind: fixup_arm_thumb_bcc
 134 @ CHECK: b       #1838                   @ encoding: [0x97,0xe3]
 135 @ CHECK: b       #-420                   @ encoding: [0x2e,0xe7]
 136 @ CHECK: beq     #336                    @ encoding: [0xa8,0xd0]
 137 @ CHECK: beq     #160                    @ encoding: [0x50,0xd0]
 138
 139 @------------------------------------------------------------------------------
 140 @ BL/BLX
 141 @------------------------------------------------------------------------------
 142         blx     #884800
 143         blx     #1769600
 144
 145 @ CHECK: blx     #884800                 @ encoding: [0xd8,0xf0,0x20,0xe8]
 146 @ CHECK: blx     #1769600                @ encoding: [0xb0,0xf1,0x40,0xe8]
 147
 148 @------------------------------------------------------------------------------
 149 @ BICS
 150 @------------------------------------------------------------------------------
 151         bics r1, r6
 152
 153 @ CHECK: bics   r1, r6                  @ encoding: [0xb1,0x43]
 154
 155
 156 @------------------------------------------------------------------------------
 157 @ BKPT
 158 @------------------------------------------------------------------------------
 159         bkpt #0
 160         bkpt #255
 161
 162 @ CHECK: bkpt   #0                      @ encoding: [0x00,0xbe]
 163 @ CHECK: bkpt   #255                    @ encoding: [0xff,0xbe]
 164
 165
 166 @------------------------------------------------------------------------------
 167 @ BL/BLX (immediate)
 168 @------------------------------------------------------------------------------
 169         bl _bar
 170         blx _baz
 171
 172 @ CHECK: bl     _bar                    @ encoding: [A,0xf0'A',A,0xf8'A']
 173              @   fixup A - offset: 0, value: _bar, kind: fixup_arm_thumb_bl
 174 @ CHECK: blx    _baz                    @ encoding: [A,0xf0'A',A,0xe8'A']
 175              @   fixup A - offset: 0, value: _baz, kind: fixup_arm_thumb_blx
 176
 177
 178 @------------------------------------------------------------------------------
 179 @ BLX (register)
 180 @------------------------------------------------------------------------------
 181         blx r4
 182
 183 @ CHECK: blx    r4                      @ encoding: [0xa0,0x47]
 184
 185
 186 @------------------------------------------------------------------------------
 187 @ BX
 188 @------------------------------------------------------------------------------
 189         bx r2
 190
 191 @ CHECK: bx     r2                      @ encoding: [0x10,0x47]
 192
 193
 194 @------------------------------------------------------------------------------
 195 @ CMN
 196 @------------------------------------------------------------------------------
 197
 198         cmn r5, r1
 199
 200 @ CHECK: cmn    r5, r1                  @ encoding: [0xcd,0x42]
 201
 202
 203 @------------------------------------------------------------------------------
 204 @ CMP
 205 @------------------------------------------------------------------------------
 206         cmp r6, #32
 207         cmp r3, r4
 208         cmp r8, r1
 209
 210 @ CHECK: cmp    r6, #32                 @ encoding: [0x20,0x2e]
 211 @ CHECK: cmp    r3, r4                  @ encoding: [0xa3,0x42]
 212 @ CHECK: cmp    r8, r1                  @ encoding: [0x88,0x45]
 213
 214 @------------------------------------------------------------------------------
 215 @ EOR
 216 @------------------------------------------------------------------------------
 217         eors r4, r5
 218
 219 @ CHECK: eors   r4, r5                  @ encoding: [0x6c,0x40]
 220
 221
 222 @------------------------------------------------------------------------------
 223 @ LDM
 224 @------------------------------------------------------------------------------
 225         ldm r3, {r0, r1, r2, r3, r4, r5, r6, r7}
 226         ldm r2!, {r1, r3, r4, r5, r7}
 227         ldm r1, {r1}
 228
 229 @ CHECK: ldm    r3, {r0, r1, r2, r3, r4, r5, r6, r7} @ encoding: [0xff,0xcb]
 230 @ CHECK: ldm    r2!, {r1, r3, r4, r5, r7} @ encoding: [0xba,0xca]
 231 @ CHECK: ldm    r1, {r1}                @ encoding: [0x02,0xc9]
 232
 233
 234 @------------------------------------------------------------------------------
 235 @ LDR (immediate)
 236 @------------------------------------------------------------------------------
 237         ldr r1, [r5]
 238         ldr r2, [r6, #32]
 239         ldr r3, [r7, #124]
 240         ldr r1, [sp]
 241         ldr r2, [sp, #24]
 242         ldr r3, [sp, #1020]
 243
 244
 245 @ CHECK: ldr    r1, [r5]                @ encoding: [0x29,0x68]
 246 @ CHECK: ldr    r2, [r6, #32]           @ encoding: [0x32,0x6a]
 247 @ CHECK: ldr    r3, [r7, #124]          @ encoding: [0xfb,0x6f]
 248 @ CHECK: ldr    r1, [sp]                @ encoding: [0x00,0x99]
 249 @ CHECK: ldr    r2, [sp, #24]           @ encoding: [0x06,0x9a]
 250 @ CHECK: ldr    r3, [sp, #1020]         @ encoding: [0xff,0x9b]
 251
 252
 253 @------------------------------------------------------------------------------
 254 @ LDR (literal)
 255 @------------------------------------------------------------------------------
 256         ldr r1, _foo
 257         ldr     r3, #604
 258         ldr     r3, #368
 259
 260 @ CHECK: ldr    r1, _foo                @ encoding: [A,0x49]
 261              @   fixup A - offset: 0, value: _foo, kind: fixup_arm_thumb_cp
 262 @ CHECK: ldr     r3, #604                @ encoding: [0x97,0x4b]
 263 @ CHECK: ldr     r3, #368                @ encoding: [0x5c,0x4b]
 264
 265 @------------------------------------------------------------------------------
 266 @ LDR (register)
 267 @------------------------------------------------------------------------------
 268         ldr r1, [r2, r3]
 269
 270 @ CHECK: ldr    r1, [r2, r3]            @ encoding: [0xd1,0x58]
 271
 272
 273 @------------------------------------------------------------------------------
 274 @ LDRB (immediate)
 275 @------------------------------------------------------------------------------
 276         ldrb r4, [r3]
 277         ldrb r5, [r6, #0]
 278         ldrb r6, [r7, #31]
 279
 280 @ CHECK: ldrb   r4, [r3]                @ encoding: [0x1c,0x78]
 281 @ CHECK: ldrb   r5, [r6]                @ encoding: [0x35,0x78]
 282 @ CHECK: ldrb   r6, [r7, #31]           @ encoding: [0xfe,0x7f]
 283
 284
 285 @------------------------------------------------------------------------------
 286 @ LDRB (register)
 287 @------------------------------------------------------------------------------
 288         ldrb r6, [r4, r5]
 289
 290 @ CHECK: ldrb   r6, [r4, r5]            @ encoding: [0x66,0x5d]
 291
 292
 293 @------------------------------------------------------------------------------
 294 @ LDRH (immediate)
 295 @------------------------------------------------------------------------------
 296         ldrh r3, [r3]
 297         ldrh r4, [r6, #2]
 298         ldrh r5, [r7, #62]
 299
 300 @ CHECK: ldrh   r3, [r3]                @ encoding: [0x1b,0x88]
 301 @ CHECK: ldrh   r4, [r6, #2]            @ encoding: [0x74,0x88]
 302 @ CHECK: ldrh   r5, [r7, #62]           @ encoding: [0xfd,0x8f]
 303
 304
 305 @------------------------------------------------------------------------------
 306 @ LDRH (register)
 307 @------------------------------------------------------------------------------
 308         ldrh r6, [r2, r6]
 309
 310 @ CHECK: ldrh   r6, [r2, r6]            @ encoding: [0x96,0x5b]
 311
 312
 313 @------------------------------------------------------------------------------
 314 @ LDRSB/LDRSH
 315 @------------------------------------------------------------------------------
 316         ldrsb r6, [r2, r6]
 317         ldrsh r3, [r7, r1]
 318
 319 @ CHECK: ldrsb  r6, [r2, r6]            @ encoding: [0x96,0x57]
 320 @ CHECK: ldrsh  r3, [r7, r1]            @ encoding: [0x7b,0x5e]
 321
 322
 323 @------------------------------------------------------------------------------
 324 @ LSL (immediate)
 325 @------------------------------------------------------------------------------
 326         lsls r4, r5, #0
 327         lsls r4, r5, #4
 328         lsls r3, #12
 329         lsls r3, r3, #12
 330         lsls r1, r3, #12
 331
 332 @ CHECK: lsls   r4, r5, #0              @ encoding: [0x2c,0x00]
 333 @ CHECK: lsls   r4, r5, #4              @ encoding: [0x2c,0x01]
 334 @ CHECK: lsls   r3, r3, #12             @ encoding: [0x1b,0x03]
 335 @ CHECK: lsls   r3, r3, #12             @ encoding: [0x1b,0x03]
 336 @ CHECK: lsls   r1, r3, #12             @ encoding: [0x19,0x03]
 337
 338
 339 @------------------------------------------------------------------------------
 340 @ LSL (register)
 341 @------------------------------------------------------------------------------
 342         lsls r2, r6
 343
 344 @ CHECK: lsls   r2, r6                  @ encoding: [0xb2,0x40]
 345
 346
 347 @------------------------------------------------------------------------------
 348 @ LSR (immediate)
 349 @------------------------------------------------------------------------------
 350         lsrs r1, r3, #1
 351         lsrs r1, r3, #32
 352         lsrs r4, #20
 353         lsrs r4, r4, #20
 354         lsrs r2, r4, #20
 355
 356 @ CHECK: lsrs   r1, r3, #1              @ encoding: [0x59,0x08]
 357 @ CHECK: lsrs   r1, r3, #32             @ encoding: [0x19,0x08]
 358 @ CHECK: lsrs   r4, r4, #20             @ encoding: [0x24,0x0d]
 359 @ CHECK: lsrs   r4, r4, #20             @ encoding: [0x24,0x0d]
 360 @ CHECK: lsrs   r2, r4, #20             @ encoding: [0x22,0x0d]
 361
 362
 363 @------------------------------------------------------------------------------
 364 @ LSR (register)
 365 @------------------------------------------------------------------------------
 366         lsrs r2, r6
 367
 368 @ CHECK: lsrs   r2, r6                  @ encoding: [0xf2,0x40]
 369
 370
 371 @------------------------------------------------------------------------------
 372 @ MOV (immediate)
 373 @------------------------------------------------------------------------------
 374         movs r2, #0
 375         movs r2, #255
 376         movs r2, #23
 377
 378 @ CHECK: movs   r2, #0                  @ encoding: [0x00,0x22]
 379 @ CHECK: movs   r2, #255                @ encoding: [0xff,0x22]
 380 @ CHECK: movs   r2, #23                 @ encoding: [0x17,0x22]
 381
 382
 383 @------------------------------------------------------------------------------
 384 @ MOV (register)
 385 @------------------------------------------------------------------------------
 386         mov r3, r4
 387         movs r1, r3
 388
 389 @ CHECK: mov    r3, r4                  @ encoding: [0x23,0x46]
 390 @ CHECK: movs   r1, r3                  @ encoding: [0x19,0x00]
 391
 392
 393 @------------------------------------------------------------------------------
 394 @ MUL
 395 @------------------------------------------------------------------------------
 396         muls r1, r2, r1
 397         muls r2, r2, r3
 398         muls r3, r4
 399
 400 @ CHECK: muls   r1, r2, r1              @ encoding: [0x51,0x43]
 401 @ CHECK: muls   r2, r3, r2              @ encoding: [0x5a,0x43]
 402 @ CHECK: muls   r3, r4, r3              @ encoding: [0x63,0x43]
 403
 404
 405 @------------------------------------------------------------------------------
 406 @ MVN
 407 @------------------------------------------------------------------------------
 408         mvns r6, r3
 409
 410 @ CHECK: mvns   r6, r3                  @ encoding: [0xde,0x43]
 411
 412
 413 @------------------------------------------------------------------------------
 414 @ NEG
 415 @------------------------------------------------------------------------------
 416         negs r3, r4
 417
 418 @ CHECK: rsbs   r3, r4, #0              @ encoding: [0x63,0x42]
 419
 420 @------------------------------------------------------------------------------
 421 @ ORR
 422 @------------------------------------------------------------------------------
 423         orrs  r3, r4
 424
 425 @ CHECK-ERRORS:         orrs    r3, r4                  @ encoding: [0x23,0x43]
 426
 427
 428 @------------------------------------------------------------------------------
 429 @ POP
 430 @------------------------------------------------------------------------------
 431         pop {r2, r3, r6}
 432
 433 @ CHECK: pop    {r2, r3, r6}            @ encoding: [0x4c,0xbc]
 434
 435
 436 @------------------------------------------------------------------------------
 437 @ PUSH
 438 @------------------------------------------------------------------------------
 439         push {r1, r2, r7}
 440
 441 @ CHECK: push   {r1, r2, r7}            @ encoding: [0x86,0xb4]
 442
 443
 444 @------------------------------------------------------------------------------
 445 @ REV/REV16/REVSH
 446 @------------------------------------------------------------------------------
 447         rev r6, r3
 448         rev16 r7, r2
 449         revsh r5, r1
 450
 451 @ CHECK: rev    r6, r3                  @ encoding: [0x1e,0xba]
 452 @ CHECK: rev16  r7, r2                  @ encoding: [0x57,0xba]
 453 @ CHECK: revsh  r5, r1                  @ encoding: [0xcd,0xba]
 454
 455
 456 @------------------------------------------------------------------------------
 457 @ ROR
 458 @------------------------------------------------------------------------------
 459         rors r2, r7
 460
 461 @ CHECK: rors   r2, r7                  @ encoding: [0xfa,0x41]
 462
 463
 464 @------------------------------------------------------------------------------
 465 @ RSB
 466 @------------------------------------------------------------------------------
 467         rsbs r1, r3, #0
 468
 469 @ CHECK: rsbs   r1, r3, #0              @ encoding: [0x59,0x42]
 470
 471
 472 @------------------------------------------------------------------------------
 473 @ SBC
 474 @------------------------------------------------------------------------------
 475         sbcs r4, r3
 476
 477 @ CHECK: sbcs   r4, r3                  @ encoding: [0x9c,0x41]
 478
 479
 480 @------------------------------------------------------------------------------
 481 @ SETEND
 482 @------------------------------------------------------------------------------
 483         setend be
 484         setend le
 485
 486 @ CHECK: setend be                      @ encoding: [0x58,0xb6]
 487 @ CHECK: setend le                      @ encoding: [0x50,0xb6]
 488
 489
 490 @------------------------------------------------------------------------------
 491 @ STM
 492 @------------------------------------------------------------------------------
 493         stm r1!, {r2, r6}
 494         stm r1!, {r1, r2, r3, r7}
 495
 496 @ CHECK: stm    r1!, {r2, r6}           @ encoding: [0x44,0xc1]
 497 @ CHECK: stm    r1!, {r1, r2, r3, r7}   @ encoding: [0x8e,0xc1]
 498
 499
 500 @------------------------------------------------------------------------------
 501 @ STR (immediate)
 502 @------------------------------------------------------------------------------
 503         str r2, [r7]
 504         str r2, [r7, #0]
 505         str r5, [r1, #4]
 506         str r3, [r7, #124]
 507         str r2, [sp]
 508         str r3, [sp, #0]
 509         str r4, [sp, #20]
 510         str r5, [sp, #1020]
 511
 512 @ CHECK: str    r2, [r7]                @ encoding: [0x3a,0x60]
 513 @ CHECK: str    r2, [r7]                @ encoding: [0x3a,0x60]
 514 @ CHECK: str    r5, [r1, #4]            @ encoding: [0x4d,0x60]
 515 @ CHECK: str    r3, [r7, #124]          @ encoding: [0xfb,0x67]
 516 @ CHECK: str    r2, [sp]                @ encoding: [0x00,0x92]
 517 @ CHECK: str    r3, [sp]                @ encoding: [0x00,0x93]
 518 @ CHECK: str    r4, [sp, #20]           @ encoding: [0x05,0x94]
 519 @ CHECK: str    r5, [sp, #1020]         @ encoding: [0xff,0x95]
 520
 521
 522 @------------------------------------------------------------------------------
 523 @ STR (register)
 524 @------------------------------------------------------------------------------
 525         str r2, [r7, r3]
 526
 527 @ CHECK: str    r2, [r7, r3]            @ encoding: [0xfa,0x50]
 528
 529
 530 @------------------------------------------------------------------------------
 531 @ STRB (immediate)
 532 @------------------------------------------------------------------------------
 533         strb r4, [r3]
 534         strb r5, [r6, #0]
 535         strb r6, [r7, #31]
 536
 537 @ CHECK: strb   r4, [r3]                @ encoding: [0x1c,0x70]
 538 @ CHECK: strb   r5, [r6]                @ encoding: [0x35,0x70]
 539 @ CHECK: strb   r6, [r7, #31]           @ encoding: [0xfe,0x77]
 540
 541
 542 @------------------------------------------------------------------------------
 543 @ STRB (register)
 544 @------------------------------------------------------------------------------
 545         strb r6, [r4, r5]
 546
 547 @ CHECK: strb   r6, [r4, r5]            @ encoding: [0x66,0x55]
 548
 549
 550 @------------------------------------------------------------------------------
 551 @ STRH (immediate)
 552 @------------------------------------------------------------------------------
 553         strh r3, [r3]
 554         strh r4, [r6, #2]
 555         strh r5, [r7, #62]
 556
 557 @ CHECK: strh   r3, [r3]                @ encoding: [0x1b,0x80]
 558 @ CHECK: strh   r4, [r6, #2]            @ encoding: [0x74,0x80]
 559 @ CHECK: strh   r5, [r7, #62]           @ encoding: [0xfd,0x87]
 560
 561
 562 @------------------------------------------------------------------------------
 563 @ STRH (register)
 564 @------------------------------------------------------------------------------
 565         strh r6, [r2, r6]
 566
 567 @ CHECK: strh   r6, [r2, r6]            @ encoding: [0x96,0x53]
 568
 569
 570 @------------------------------------------------------------------------------
 571 @ SUB (immediate)
 572 @------------------------------------------------------------------------------
 573         subs r1, r2, #3
 574         subs r2, #3
 575         subs r2, #8
 576
 577 @ CHECK: subs   r1, r2, #3              @ encoding: [0xd1,0x1e]
 578 @ CHECK: subs   r2, #3                  @ encoding: [0x03,0x3a]
 579 @ CHECK: subs   r2, #8                  @ encoding: [0x08,0x3a]
 580
 581
 582 @------------------------------------------------------------------------------
 583 @ SUB (SP minus immediate)
 584 @------------------------------------------------------------------------------
 585         sub sp, #12
 586         sub sp, sp, #508
 587
 588 @ CHECK: sub    sp, #12                 @ encoding: [0x83,0xb0]
 589 @ CHECK: sub    sp, #508                @ encoding: [0xff,0xb0]
 590
 591
 592 @------------------------------------------------------------------------------
 593 @ SUB (register)
 594 @------------------------------------------------------------------------------
 595         subs r1, r2, r3
 596
 597 @ CHECK: subs   r1, r2, r3              @ encoding: [0xd1,0x1a]
 598
 599
 600 @------------------------------------------------------------------------------
 601 @ SVC
 602 @------------------------------------------------------------------------------
 603         svc #0
 604         svc #255
 605
 606 @ CHECK: svc    #0                      @ encoding: [0x00,0xdf]
 607 @ CHECK: svc    #255                    @ encoding: [0xff,0xdf]
 608
 609
 610 @------------------------------------------------------------------------------
 611 @ SXTB/SXTH
 612 @------------------------------------------------------------------------------
 613         sxtb r3, r5
 614         sxth r3, r5
 615
 616 @ CHECK: sxtb   r3, r5                  @ encoding: [0x6b,0xb2]
 617 @ CHECK: sxth   r3, r5                  @ encoding: [0x2b,0xb2]
 618
 619
 620 @------------------------------------------------------------------------------
 621 @ TST
 622 @------------------------------------------------------------------------------
 623         tst r6, r1
 624
 625 @ CHECK: tst    r6, r1                  @ encoding: [0x0e,0x42]
 626
 627
 628 @------------------------------------------------------------------------------
 629 @ UXTB/UXTH
 630 @------------------------------------------------------------------------------
 631         uxtb  r7, r2
 632         uxth  r1, r4
 633
 634 @ CHECK: uxtb   r7, r2                  @ encoding: [0xd7,0xb2]
 635 @ CHECK: uxth   r1, r4                  @ encoding: [0xa1,0xb2]
 636
 637
 638 @------------------------------------------------------------------------------
 639 @ WFE/WFI/YIELD
 640 @------------------------------------------------------------------------------
 641         wfe
 642         wfi
 643         yield
 644
 645 @ CHECK: wfe                             @ encoding: [0x20,0xbf]
 646 @ CHECK: wfi                             @ encoding: [0x30,0xbf]
 647 @ CHECK: yield                           @ encoding: [0x10,0xbf]