test/MC/X86/x86-16.s

   1 // RUN: llvm-mc -triple i386-unknown-unknown --show-encoding %s | FileCheck %s
   2
   3         .code16
   4
   5         movl $0x12345678, %ebx
   6 // CHECK: movl
   7 // CHECK: encoding: [0x66,0xbb,0x78,0x56,0x34,0x12]
   8         pause
   9 // CHECK: pause
  10 // CHECK: encoding: [0xf3,0x90]
  11         sfence
  12 // CHECK: sfence
  13 // CHECK: encoding: [0x0f,0xae,0xf8]
  14         lfence
  15 // CHECK: lfence
  16 // CHECK: encoding: [0x0f,0xae,0xe8]
  17         mfence
  18         stgi
  19 // CHECK: stgi
  20 // CHECK: encoding: [0x0f,0x01,0xdc]
  21         clgi
  22 // CHECK: clgi
  23 // CHECK: encoding: [0x0f,0x01,0xdd]
  24
  25         rdtscp
  26 // CHECK: rdtscp
  27 // CHECK:  encoding: [0x0f,0x01,0xf9]
  28
  29
  30 // CHECK: movl  %eax, 16(%ebp)          # encoding: [0x67,0x66,0x89,0x45,0x10]
  31         movl    %eax, 16(%ebp)
  32 // CHECK: movl  %eax, -16(%ebp)          # encoding: [0x67,0x66,0x89,0x45,0xf0]
  33         movl    %eax, -16(%ebp)
  34
  35 // CHECK: testb %bl, %cl                # encoding: [0x84,0xcb]
  36         testb %bl, %cl
  37
  38 // CHECK: cmpl  %eax, %ebx              # encoding: [0x66,0x39,0xc3]
  39         cmpl %eax, %ebx
  40
  41 // CHECK: addw  %ax, %ax                # encoding: [0x01,0xc0]
  42         addw %ax, %ax
  43
  44 // CHECK: shrl  %eax                    # encoding: [0x66,0xd1,0xe8]
  45         shrl $1, %eax
  46
  47 // CHECK: shll  %eax                    # encoding: [0x66,0xd1,0xe0]
  48         sall $1, %eax
  49 // CHECK: shll  %eax                    # encoding: [0x66,0xd1,0xe0]
  50         sal $1, %eax
  51
  52 into
  53 // CHECK: into
  54 // CHECK:  encoding: [0xce]
  55 int3
  56 // CHECK: int3
  57 // CHECK:  encoding: [0xcc]
  58 int $4
  59 // CHECK: int $4
  60 // CHECK:  encoding: [0xcd,0x04]
  61 int $255
  62 // CHECK: int $255
  63 // CHECK:  encoding: [0xcd,0xff]
  64
  65 // CHECK: pushfw        # encoding: [0x9c]
  66         pushf
  67 // CHECK: pushfl        # encoding: [0x66,0x9c]
  68         pushfl
  69 // CHECK: popfw         # encoding: [0x9d]
  70         popf
  71 // CHECK: popfl         # encoding: [0x66,0x9d]
  72         popfl
  73
  74 retl
  75 // CHECK: ret
  76 // CHECK:  encoding: [0x66,0xc3]
  77
  78 // CHECK: cmoval        %eax, %edx
  79 // CHECK:  encoding: [0x66,0x0f,0x47,0xd0]
  80                 cmoval  %eax,%edx
  81
  82 // CHECK: cmovael       %eax, %edx
  83 // CHECK:  encoding: [0x66,0x0f,0x43,0xd0]
  84                 cmovael %eax,%edx
  85
  86 // CHECK: cmovbel       %eax, %edx
  87 // CHECK:  encoding: [0x66,0x0f,0x46,0xd0]
  88                 cmovbel %eax,%edx
  89
  90 // CHECK: cmovbl        %eax, %edx
  91 // CHECK:  encoding: [0x66,0x0f,0x42,0xd0]
  92                 cmovbl  %eax,%edx
  93
  94 // CHECK: cmovbw %bx, %bx
  95 cmovnae %bx,%bx
  96
  97
  98 // CHECK: cmovbel       %eax, %edx
  99 // CHECK:  encoding: [0x66,0x0f,0x46,0xd0]
 100                 cmovbel %eax,%edx
 101
 102 // CHECK: cmovbl        %eax, %edx
 103 // CHECK:  encoding: [0x66,0x0f,0x42,0xd0]
 104                 cmovcl  %eax,%edx
 105
 106 // CHECK: cmovel        %eax, %edx
 107 // CHECK:  encoding: [0x66,0x0f,0x44,0xd0]
 108                 cmovel  %eax,%edx
 109
 110 // CHECK: cmovgl        %eax, %edx
 111 // CHECK:  encoding: [0x66,0x0f,0x4f,0xd0]
 112                 cmovgl  %eax,%edx
 113
 114 // CHECK: cmovgel       %eax, %edx
 115 // CHECK:  encoding: [0x66,0x0f,0x4d,0xd0]
 116                 cmovgel %eax,%edx
 117
 118 // CHECK: cmovll        %eax, %edx
 119 // CHECK:  encoding: [0x66,0x0f,0x4c,0xd0]
 120                 cmovll  %eax,%edx
 121
 122 // CHECK: cmovlel       %eax, %edx
 123 // CHECK:  encoding: [0x66,0x0f,0x4e,0xd0]
 124                 cmovlel %eax,%edx
 125
 126 // CHECK: cmovbel       %eax, %edx
 127 // CHECK:  encoding: [0x66,0x0f,0x46,0xd0]
 128                 cmovnal %eax,%edx
 129
 130 // CHECK: cmovnel       %eax, %edx
 131 // CHECK:  encoding: [0x66,0x0f,0x45,0xd0]
 132                 cmovnel %eax,%edx
 133
 134 // CHECK: cmovael       %eax, %edx
 135 // CHECK:  encoding: [0x66,0x0f,0x43,0xd0]
 136                 cmovnbl %eax,%edx
 137
 138 // CHECK: cmoval        %eax, %edx
 139 // CHECK:  encoding: [0x66,0x0f,0x47,0xd0]
 140                 cmovnbel        %eax,%edx
 141
 142 // CHECK: cmovael       %eax, %edx
 143 // CHECK:  encoding: [0x66,0x0f,0x43,0xd0]
 144                 cmovncl %eax,%edx
 145
 146 // CHECK: cmovnel       %eax, %edx
 147 // CHECK:  encoding: [0x66,0x0f,0x45,0xd0]
 148                 cmovnel %eax,%edx
 149
 150 // CHECK: cmovlel       %eax, %edx
 151 // CHECK:  encoding: [0x66,0x0f,0x4e,0xd0]
 152                 cmovngl %eax,%edx
 153
 154 // CHECK: cmovgel       %eax, %edx
 155 // CHECK:  encoding: [0x66,0x0f,0x4d,0xd0]
 156                 cmovnl  %eax,%edx
 157
 158 // CHECK: cmovnel       %eax, %edx
 159 // CHECK:  encoding: [0x66,0x0f,0x45,0xd0]
 160                 cmovnel %eax,%edx
 161
 162 // CHECK: cmovlel       %eax, %edx
 163 // CHECK:  encoding: [0x66,0x0f,0x4e,0xd0]
 164                 cmovngl %eax,%edx
 165
 166 // CHECK: cmovll        %eax, %edx
 167 // CHECK:  encoding: [0x66,0x0f,0x4c,0xd0]
 168                 cmovngel        %eax,%edx
 169
 170 // CHECK: cmovgel       %eax, %edx
 171 // CHECK:  encoding: [0x66,0x0f,0x4d,0xd0]
 172                 cmovnll %eax,%edx
 173
 174 // CHECK: cmovgl        %eax, %edx
 175 // CHECK:  encoding: [0x66,0x0f,0x4f,0xd0]
 176                 cmovnlel        %eax,%edx
 177
 178 // CHECK: cmovnol       %eax, %edx
 179 // CHECK:  encoding: [0x66,0x0f,0x41,0xd0]
 180                 cmovnol %eax,%edx
 181
 182 // CHECK: cmovnpl       %eax, %edx
 183 // CHECK:  encoding: [0x66,0x0f,0x4b,0xd0]
 184                 cmovnpl %eax,%edx
 185
 186 // CHECK: cmovnsl       %eax, %edx
 187 // CHECK:  encoding: [0x66,0x0f,0x49,0xd0]
 188                 cmovnsl %eax,%edx
 189
 190 // CHECK: cmovnel       %eax, %edx
 191 // CHECK:  encoding: [0x66,0x0f,0x45,0xd0]
 192                 cmovnzl %eax,%edx
 193
 194 // CHECK: cmovol        %eax, %edx
 195 // CHECK:  encoding: [0x66,0x0f,0x40,0xd0]
 196                 cmovol  %eax,%edx
 197
 198 // CHECK: cmovpl        %eax, %edx
 199 // CHECK:  encoding: [0x66,0x0f,0x4a,0xd0]
 200                 cmovpl  %eax,%edx
 201
 202 // CHECK: cmovsl        %eax, %edx
 203 // CHECK:  encoding: [0x66,0x0f,0x48,0xd0]
 204                 cmovsl  %eax,%edx
 205
 206 // CHECK: cmovel        %eax, %edx
 207 // CHECK:  encoding: [0x66,0x0f,0x44,0xd0]
 208                 cmovzl  %eax,%edx
 209
 210 // CHECK: fmul  %st(0)
 211 // CHECK:  encoding: [0xd8,0xc8]
 212         fmul %st(0), %st
 213
 214 // CHECK: fadd  %st(0)
 215 // CHECK:  encoding: [0xd8,0xc0]
 216         fadd %st(0), %st
 217
 218 // CHECK: fsub  %st(0)
 219 // CHECK:  encoding: [0xd8,0xe0]
 220         fsub %st(0), %st
 221
 222 // CHECK: fsubr %st(0)
 223 // CHECK:  encoding: [0xd8,0xe8]
 224         fsubr %st(0), %st
 225
 226 // CHECK: fdivr %st(0)
 227 // CHECK:  encoding: [0xd8,0xf8]
 228         fdivr %st(0), %st
 229
 230 // CHECK: fdiv  %st(0)
 231 // CHECK:  encoding: [0xd8,0xf0]
 232         fdiv %st(0), %st
 233
 234 // CHECK: movl  %cs, %eax
 235 // CHECK:  encoding: [0x66,0x8c,0xc8]
 236         movl %cs, %eax
 237
 238 // CHECK: movw  %cs, %ax
 239 // CHECK:  encoding: [0x8c,0xc8]
 240         movw %cs, %ax
 241
 242 // CHECK: movl  %cs, (%eax)
 243 // CHECK:  encoding: [0x67,0x66,0x8c,0x08]
 244         movl %cs, (%eax)
 245
 246 // CHECK: movw  %cs, (%eax)
 247 // CHECK:  encoding: [0x67,0x8c,0x08]
 248         movw %cs, (%eax)
 249
 250 // CHECK: movl  %eax, %cs
 251 // CHECK:  encoding: [0x66,0x8e,0xc8]
 252         movl %eax, %cs
 253
 254 // CHECK: movl  (%eax), %cs
 255 // CHECK:  encoding: [0x67,0x66,0x8e,0x08]
 256         movl (%eax), %cs
 257
 258 // CHECK: movw  (%eax), %cs
 259 // CHECK:  encoding: [0x67,0x8e,0x08]
 260         movw (%eax), %cs
 261
 262 // CHECK: movl  %cr0, %eax
 263 // CHECK:  encoding: [0x0f,0x20,0xc0]
 264         movl %cr0,%eax
 265
 266 // CHECK: movl  %cr1, %eax
 267 // CHECK:  encoding: [0x0f,0x20,0xc8]
 268         movl %cr1,%eax
 269
 270 // CHECK: movl  %cr2, %eax
 271 // CHECK:  encoding: [0x0f,0x20,0xd0]
 272         movl %cr2,%eax
 273
 274 // CHECK: movl  %cr3, %eax
 275 // CHECK:  encoding: [0x0f,0x20,0xd8]
 276         movl %cr3,%eax
 277
 278 // CHECK: movl  %cr4, %eax
 279 // CHECK:  encoding: [0x0f,0x20,0xe0]
 280         movl %cr4,%eax
 281
 282 // CHECK: movl  %dr0, %eax
 283 // CHECK:  encoding: [0x0f,0x21,0xc0]
 284         movl %dr0,%eax
 285
 286 // CHECK: movl  %dr1, %eax
 287 // CHECK:  encoding: [0x0f,0x21,0xc8]
 288         movl %dr1,%eax
 289
 290 // CHECK: movl  %dr1, %eax
 291 // CHECK:  encoding: [0x0f,0x21,0xc8]
 292         movl %dr1,%eax
 293
 294 // CHECK: movl  %dr2, %eax
 295 // CHECK:  encoding: [0x0f,0x21,0xd0]
 296         movl %dr2,%eax
 297
 298 // CHECK: movl  %dr3, %eax
 299 // CHECK:  encoding: [0x0f,0x21,0xd8]
 300         movl %dr3,%eax
 301
 302 // CHECK: movl  %dr4, %eax
 303 // CHECK:  encoding: [0x0f,0x21,0xe0]
 304         movl %dr4,%eax
 305
 306 // CHECK: movl  %dr5, %eax
 307 // CHECK:  encoding: [0x0f,0x21,0xe8]
 308         movl %dr5,%eax
 309
 310 // CHECK: movl  %dr6, %eax
 311 // CHECK:  encoding: [0x0f,0x21,0xf0]
 312         movl %dr6,%eax
 313
 314 // CHECK: movl  %dr7, %eax
 315 // CHECK:  encoding: [0x0f,0x21,0xf8]
 316         movl %dr7,%eax
 317
 318 // CHECK: wait
 319 // CHECK:  encoding: [0x9b]
 320         fwait
 321
 322 // CHECK: pusha
 323 // CHECK:  encoding: [0x60]
 324                 pusha
 325
 326 // CHECK: popa
 327 // CHECK:  encoding: [0x61]
 328                 popa
 329
 330 // CHECK: pushaw
 331 // CHECK:  encoding: [0x60]
 332                 pushaw
 333
 334 // CHECK: popaw
 335 // CHECK:  encoding: [0x61]
 336                 popaw
 337
 338 // CHECK: pushal
 339 // CHECK:  encoding: [0x66,0x60]
 340                 pushal
 341
 342 // CHECK: popal
 343 // CHECK:  encoding: [0x66,0x61]
 344                 popal
 345
 346 // CHECK: jmpw *8(%eax)
 347 // CHECK:   encoding: [0x67,0xff,0x60,0x08]
 348         jmp     *8(%eax)
 349
 350 // CHECK: jmpl *8(%eax)
 351 // CHECK:   encoding: [0x67,0x66,0xff,0x60,0x08]
 352         jmpl    *8(%eax)
 353
 354 // CHECK: lcalll $2, $4660
 355 // CHECK:   encoding: [0x66,0x9a,0x34,0x12,0x00,0x00,0x02,0x00]
 356 lcalll $0x2, $0x1234
 357
 358
 359 L1:
 360   jcxz L1
 361 // CHECK: jcxz L1
 362 // CHECK:   encoding: [0xe3,A]
 363   jecxz L1
 364 // CHECK: jecxz L1
 365 // CHECK:   encoding: [0x67,0xe3,A]
 366
 367 iret
 368 // CHECK: iretw
 369 // CHECK: encoding: [0xcf]
 370 iretw
 371 // CHECK: iretw
 372 // CHECK: encoding: [0xcf]
 373 iretl
 374 // CHECK: iretl
 375 // CHECK: encoding: [0x66,0xcf]
 376
 377 sysret
 378 // CHECK: sysretl
 379 // CHECK: encoding: [0x0f,0x07]
 380 sysretl
 381 // CHECK: sysretl
 382 // CHECK: encoding: [0x0f,0x07]
 383
 384 testl   %ecx, -24(%ebp)
 385 // CHECK: testl -24(%ebp), %ecx
 386 testl   -24(%ebp), %ecx
 387 // CHECK: testl -24(%ebp), %ecx
 388
 389
 390 push %cs
 391 // CHECK: pushw %cs
 392 // CHECK: encoding: [0x0e]
 393 push %ds
 394 // CHECK: pushw %ds
 395 // CHECK: encoding: [0x1e]
 396 push %ss
 397 // CHECK: pushw %ss
 398 // CHECK: encoding: [0x16]
 399 push %es
 400 // CHECK: pushw %es
 401 // CHECK: encoding: [0x06]
 402 push %fs
 403 // CHECK: pushw %fs
 404 // CHECK: encoding: [0x0f,0xa0]
 405 push %gs
 406 // CHECK: pushw %gs
 407 // CHECK: encoding: [0x0f,0xa8]
 408
 409 pushw %cs
 410 // CHECK: pushw %cs
 411 // CHECK: encoding: [0x0e]
 412 pushw %ds
 413 // CHECK: pushw %ds
 414 // CHECK: encoding: [0x1e]
 415 pushw %ss
 416 // CHECK: pushw %ss
 417 // CHECK: encoding: [0x16]
 418 pushw %es
 419 // CHECK: pushw %es
 420 // CHECK: encoding: [0x06]
 421 pushw %fs
 422 // CHECK: pushw %fs
 423 // CHECK: encoding: [0x0f,0xa0]
 424 pushw %gs
 425 // CHECK: pushw %gs
 426 // CHECK: encoding: [0x0f,0xa8]
 427
 428 pushl %cs
 429 // CHECK: pushl %cs
 430 // CHECK: encoding: [0x66,0x0e]
 431 pushl %ds
 432 // CHECK: pushl %ds
 433 // CHECK: encoding: [0x66,0x1e]
 434 pushl %ss
 435 // CHECK: pushl %ss
 436 // CHECK: encoding: [0x66,0x16]
 437 pushl %es
 438 // CHECK: pushl %es
 439 // CHECK: encoding: [0x66,0x06]
 440 pushl %fs
 441 // CHECK: pushl %fs
 442 // CHECK: encoding: [0x66,0x0f,0xa0]
 443 pushl %gs
 444 // CHECK: pushl %gs
 445 // CHECK: encoding: [0x66,0x0f,0xa8]
 446
 447 pop %ss
 448 // CHECK: popw  %ss
 449 // CHECK: encoding: [0x17]
 450 pop %ds
 451 // CHECK: popw  %ds
 452 // CHECK: encoding: [0x1f]
 453 pop %es
 454 // CHECK: popw  %es
 455 // CHECK: encoding: [0x07]
 456
 457 popl %ss
 458 // CHECK: popl  %ss
 459 // CHECK: encoding: [0x66,0x17]
 460 popl %ds
 461 // CHECK: popl  %ds
 462 // CHECK: encoding: [0x66,0x1f]
 463 popl %es
 464 // CHECK: popl  %es
 465 // CHECK: encoding: [0x66,0x07]
 466
 467 pushfd
 468 // CHECK: pushfl
 469 popfd
 470 // CHECK: popfl
 471 pushfl
 472 // CHECK: pushfl
 473 popfl
 474 // CHECK: popfl
 475
 476
 477         setc    %bl
 478         setnae  %bl
 479         setnb   %bl
 480         setnc   %bl
 481         setna   %bl
 482         setnbe  %bl
 483         setpe   %bl
 484         setpo   %bl
 485         setnge  %bl
 486         setnl   %bl
 487         setng   %bl
 488         setnle  %bl
 489
 490         setneb  %cl // CHECK: setne %cl
 491         setcb   %bl // CHECK: setb %bl
 492         setnaeb %bl // CHECK: setb %bl
 493
 494
 495 // CHECK: lcalll        $31438, $31438
 496 // CHECK: lcalll        $31438, $31438
 497 // CHECK: ljmpl $31438, $31438
 498 // CHECK: ljmpl $31438, $31438
 499
 500 calll   $0x7ace,$0x7ace
 501 lcalll  $0x7ace,$0x7ace
 502 jmpl    $0x7ace,$0x7ace
 503 ljmpl   $0x7ace,$0x7ace
 504
 505 // CHECK: lcallw        $31438, $31438
 506 // CHECK: lcallw        $31438, $31438
 507 // CHECK: ljmpw $31438, $31438
 508 // CHECK: ljmpw $31438, $31438
 509
 510 callw   $0x7ace,$0x7ace
 511 lcallw  $0x7ace,$0x7ace
 512 jmpw    $0x7ace,$0x7ace
 513 ljmpw   $0x7ace,$0x7ace
 514
 515 // CHECK: lcallw        $31438, $31438
 516 // CHECK: lcallw        $31438, $31438
 517 // CHECK: ljmpw $31438, $31438
 518 // CHECK: ljmpw $31438, $31438
 519
 520 call    $0x7ace,$0x7ace
 521 lcall   $0x7ace,$0x7ace
 522 jmp     $0x7ace,$0x7ace
 523 ljmp    $0x7ace,$0x7ace
 524
 525 // CHECK: calll a
 526  calll a
 527
 528 // CHECK:       incb    %al # encoding: [0xfe,0xc0]
 529         incb %al
 530
 531 // CHECK:       incw    %ax # encoding: [0x40]
 532         incw %ax
 533
 534 // CHECK:       incl    %eax # encoding: [0x66,0x40]
 535         incl %eax
 536
 537 // CHECK:       decb    %al # encoding: [0xfe,0xc8]
 538         decb %al
 539
 540 // CHECK:       decw    %ax # encoding: [0x48]
 541         decw %ax
 542
 543 // CHECK:       decl    %eax # encoding: [0x66,0x48]
 544         decl %eax
 545
 546 // CHECK: pshufw $14, %mm4, %mm0 # encoding: [0x0f,0x70,0xc4,0x0e]
 547 pshufw $14, %mm4, %mm0
 548
 549 // CHECK: pshufw $90, %mm4, %mm0 # encoding: [0x0f,0x70,0xc4,0x5a]
 550 pshufw $90, %mm4, %mm0
 551
 552 // CHECK: aaa
 553 // CHECK:  encoding: [0x37]
 554                 aaa
 555
 556 // CHECK: aad   $1
 557 // CHECK:  encoding: [0xd5,0x01]
 558                 aad     $1
 559
 560 // CHECK: aad
 561 // CHECK:  encoding: [0xd5,0x0a]
 562                 aad     $0xA
 563
 564 // CHECK: aad
 565 // CHECK:  encoding: [0xd5,0x0a]
 566                 aad
 567
 568 // CHECK: aam   $2
 569 // CHECK:  encoding: [0xd4,0x02]
 570                 aam     $2
 571
 572 // CHECK: aam
 573 // CHECK:  encoding: [0xd4,0x0a]
 574                 aam     $0xA
 575
 576 // CHECK: aam
 577 // CHECK:  encoding: [0xd4,0x0a]
 578                 aam
 579
 580 // CHECK: aas
 581 // CHECK:  encoding: [0x3f]
 582                 aas
 583
 584 // CHECK: daa
 585 // CHECK:  encoding: [0x27]
 586                 daa
 587
 588 // CHECK: das
 589 // CHECK:  encoding: [0x2f]
 590                 das
 591
 592 // CHECK: retw  $31438
 593 // CHECK:  encoding: [0xc2,0xce,0x7a]
 594                 retw    $0x7ace
 595
 596 // CHECK: lretw $31438
 597 // CHECK:  encoding: [0xca,0xce,0x7a]
 598                 lretw   $0x7ace
 599
 600 // CHECK: retw  $31438
 601 // CHECK:  encoding: [0xc2,0xce,0x7a]
 602                 ret     $0x7ace
 603
 604 // CHECK: lretw $31438
 605 // CHECK:  encoding: [0xca,0xce,0x7a]
 606                 lret    $0x7ace
 607
 608 // CHECK: retl  $31438
 609 // CHECK:  encoding: [0x66,0xc2,0xce,0x7a]
 610                 retl    $0x7ace
 611
 612 // CHECK: lretl $31438
 613 // CHECK:  encoding: [0x66,0xca,0xce,0x7a]
 614                 lretl   $0x7ace
 615
 616 // CHECK: bound 2(%eax), %bx
 617 // CHECK:  encoding: [0x67,0x62,0x58,0x02]
 618                 bound   2(%eax),%bx
 619
 620 // CHECK: bound 4(%ebx), %ecx
 621 // CHECK:  encoding: [0x67,0x66,0x62,0x4b,0x04]
 622                 bound   4(%ebx),%ecx
 623
 624 // CHECK: arpl  %bx, %bx
 625 // CHECK:  encoding: [0x63,0xdb]
 626                 arpl    %bx,%bx
 627
 628 // CHECK: arpl  %bx, 6(%ecx)
 629 // CHECK:  encoding: [0x67,0x63,0x59,0x06]
 630                 arpl    %bx,6(%ecx)
 631
 632 // CHECK: lgdtw 4(%eax)
 633 // CHECK:  encoding: [0x67,0x0f,0x01,0x50,0x04]
 634                 lgdtw   4(%eax)
 635
 636 // CHECK: lgdtw 4(%eax)
 637 // CHECK:  encoding: [0x67,0x0f,0x01,0x50,0x04]
 638                 lgdt    4(%eax)
 639
 640 // CHECK: lgdtl 4(%eax)
 641 // CHECK:  encoding: [0x67,0x66,0x0f,0x01,0x50,0x04]
 642                 lgdtl   4(%eax)
 643
 644 // CHECK: lidtw 4(%eax)
 645 // CHECK:  encoding: [0x67,0x0f,0x01,0x58,0x04]
 646                 lidtw   4(%eax)
 647
 648 // CHECK: lidtw 4(%eax)
 649 // CHECK:  encoding: [0x67,0x0f,0x01,0x58,0x04]
 650                 lidt    4(%eax)
 651
 652 // CHECK: lidtl 4(%eax)
 653 // CHECK:  encoding: [0x67,0x66,0x0f,0x01,0x58,0x04]
 654                 lidtl   4(%eax)
 655
 656 // CHECK: sgdtw 4(%eax)
 657 // CHECK:  encoding: [0x67,0x0f,0x01,0x40,0x04]
 658                 sgdtw   4(%eax)
 659
 660 // CHECK: sgdtw 4(%eax)
 661 // CHECK:  encoding: [0x67,0x0f,0x01,0x40,0x04]
 662                 sgdt    4(%eax)
 663
 664 // CHECK: sgdtl 4(%eax)
 665 // CHECK:  encoding: [0x67,0x66,0x0f,0x01,0x40,0x04]
 666                 sgdtl   4(%eax)
 667
 668 // CHECK: sidtw 4(%eax)
 669 // CHECK:  encoding: [0x67,0x0f,0x01,0x48,0x04]
 670                 sidtw   4(%eax)
 671
 672 // CHECK: sidtw 4(%eax)
 673 // CHECK:  encoding: [0x67,0x0f,0x01,0x48,0x04]
 674                 sidt    4(%eax)
 675
 676 // CHECK: sidtl 4(%eax)
 677 // CHECK:  encoding: [0x67,0x66,0x0f,0x01,0x48,0x04]
 678                 sidtl   4(%eax)
 679
 680 // CHECK: fcompi        %st(2)
 681 // CHECK:  encoding: [0xdf,0xf2]
 682                 fcompi  %st(2), %st
 683
 684 // CHECK: fcompi        %st(2)
 685 // CHECK:  encoding: [0xdf,0xf2]
 686                 fcompi  %st(2)
 687
 688 // CHECK: fcompi
 689 // CHECK:  encoding: [0xdf,0xf1]
 690                 fcompi
 691
 692 // CHECK: fucompi       %st(2)
 693 // CHECK:  encoding: [0xdf,0xea]
 694                 fucompi %st(2),%st
 695
 696 // CHECK: fucompi       %st(2)
 697 // CHECK:  encoding: [0xdf,0xea]
 698                 fucompi %st(2)
 699
 700 // CHECK: fucompi
 701 // CHECK:  encoding: [0xdf,0xe9]
 702                 fucompi
 703
 704 // CHECK: wait
 705 // CHECK:  encoding: [0x9b]
 706                 fclex
 707
 708 // CHECK: fnclex
 709 // CHECK:  encoding: [0xdb,0xe2]
 710                 fnclex
 711
 712 // CHECK: ud2
 713 // CHECK:  encoding: [0x0f,0x0b]
 714                 ud2
 715
 716 // CHECK: ud2
 717 // CHECK:  encoding: [0x0f,0x0b]
 718                 ud2a
 719
 720 // CHECK: ud2b
 721 // CHECK:  encoding: [0x0f,0xb9]
 722                 ud2b
 723
 724 // CHECK: loope 0
 725 // CHECK: encoding: [0xe1,A]
 726         loopz 0
 727
 728 // CHECK: loopne 0
 729 // CHECK: encoding: [0xe0,A]
 730         loopnz 0
 731
 732 // CHECK: outsb # encoding: [0x6e]
 733 // CHECK: outsb
 734 // CHECK: outsb
 735         outsb
 736         outsb   %ds:(%si), %dx
 737         outsb   (%si), %dx
 738
 739 // CHECK: outsw # encoding: [0x6f]
 740 // CHECK: outsw
 741 // CHECK: outsw
 742         outsw
 743         outsw   %ds:(%si), %dx
 744         outsw   (%si), %dx
 745
 746 // CHECK: outsl # encoding: [0x66,0x6f]
 747 // CHECK: outsl
 748         outsl
 749         outsl   %ds:(%si), %dx
 750         outsl   (%si), %dx
 751
 752 // CHECK: insb # encoding: [0x6c]
 753 // CHECK: insb
 754         insb
 755         insb    %dx, %es:(%di)
 756
 757 // CHECK: insw # encoding: [0x6d]
 758 // CHECK: insw
 759         insw
 760         insw    %dx, %es:(%di)
 761
 762 // CHECK: insl # encoding: [0x66,0x6d]
 763 // CHECK: insl
 764         insl
 765         insl    %dx, %es:(%di)
 766
 767 // CHECK: movsb # encoding: [0xa4]
 768 // CHECK: movsb
 769 // CHECK: movsb
 770         movsb
 771         movsb   %ds:(%si), %es:(%di)
 772         movsb   (%si), %es:(%di)
 773
 774 // CHECK: movsw # encoding: [0xa5]
 775 // CHECK: movsw
 776 // CHECK: movsw
 777         movsw
 778         movsw   %ds:(%si), %es:(%di)
 779         movsw   (%si), %es:(%di)
 780
 781 // CHECK: movsl # encoding: [0x66,0xa5]
 782 // CHECK: movsl
 783 // CHECK: movsl
 784         movsl
 785         movsl   %ds:(%si), %es:(%di)
 786         movsl   (%si), %es:(%di)
 787
 788 // CHECK: lodsb # encoding: [0xac]
 789 // CHECK: lodsb
 790 // CHECK: lodsb
 791 // CHECK: lodsb
 792 // CHECK: lodsb
 793         lodsb
 794         lodsb   %ds:(%si), %al
 795         lodsb   (%si), %al
 796         lods    %ds:(%si), %al
 797         lods    (%si), %al
 798
 799 // CHECK: lodsw # encoding: [0xad]
 800 // CHECK: lodsw
 801 // CHECK: lodsw
 802 // CHECK: lodsw
 803 // CHECK: lodsw
 804         lodsw
 805         lodsw   %ds:(%si), %ax
 806         lodsw   (%si), %ax
 807         lods    %ds:(%si), %ax
 808         lods    (%si), %ax
 809
 810 // CHECK: lodsl # encoding: [0x66,0xad]
 811 // CHECK: lodsl
 812 // CHECK: lodsl
 813 // CHECK: lodsl
 814 // CHECK: lodsl
 815         lodsl
 816         lodsl   %ds:(%si), %eax
 817         lodsl   (%si), %eax
 818         lods    %ds:(%si), %eax
 819         lods    (%si), %eax
 820
 821 // CHECK: stosb # encoding: [0xaa]
 822 // CHECK: stosb
 823 // CHECK: stosb
 824         stosb
 825         stosb   %al, %es:(%di)
 826         stos    %al, %es:(%di)
 827
 828 // CHECK: stosw # encoding: [0xab]
 829 // CHECK: stosw
 830 // CHECK: stosw
 831         stosw
 832         stosw   %ax, %es:(%di)
 833         stos    %ax, %es:(%di)
 834
 835 // CHECK: stosl # encoding: [0x66,0xab]
 836 // CHECK: stosl
 837 // CHECK: stosl
 838         stosl
 839         stosl   %eax, %es:(%di)
 840         stos    %eax, %es:(%di)
 841
 842 // CHECK: strw
 843 // CHECK: encoding: [0x0f,0x00,0xc8]
 844         str %ax
 845
 846 // CHECK: strl
 847 // CHECK: encoding: [0x66,0x0f,0x00,0xc8]
 848         str %eax
 849
 850
 851 // CHECK: fsubp
 852 // CHECK: encoding: [0xde,0xe1]
 853 fsubp %st,%st(1)
 854
 855 // CHECK: fsubp %st(2)
 856 // CHECK: encoding: [0xde,0xe2]
 857 fsubp   %st, %st(2)
 858
 859 // CHECK: xchgl %eax, %eax
 860 // CHECK: encoding: [0x66,0x90]
 861 xchgl %eax, %eax
 862
 863 // CHECK: xchgw %ax, %ax
 864 // CHECK: encoding: [0x90]
 865 xchgw %ax, %ax
 866
 867 // CHECK: xchgl %ecx, %eax
 868 // CHECK: encoding: [0x66,0x91]
 869 xchgl %ecx, %eax
 870
 871 // CHECK: xchgl %ecx, %eax
 872 // CHECK: encoding: [0x66,0x91]
 873 xchgl %eax, %ecx
 874
 875 // CHECK: retw
 876 // CHECK: encoding: [0xc3]
 877 retw
 878
 879 // CHECK: retl
 880 // CHECK: encoding: [0x66,0xc3]
 881 retl
 882
 883 // CHECK: lretw
 884 // CHECK: encoding: [0xcb]
 885 lretw
 886
 887 // CHECK: lretl
 888 // CHECK: encoding: [0x66,0xcb]
 889 lretl