opcodes/i386-opc.h

   1 /* Declarations for Intel 80386 opcode table
   2    Copyright (C) 2007-2019 Free Software Foundation, Inc.
   3
   4    This file is part of the GNU opcodes library.
   5
   6    This library is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 3, or (at your option)
   9    any later version.
  10
  11    It is distributed in the hope that it will be useful, but WITHOUT
  12    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  13    or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
  14    License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with GAS; see the file COPYING.  If not, write to the Free
  18    Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
  19    02110-1301, USA.  */
  20
  21 #include "opcode/i386.h"
  22 #ifdef HAVE_LIMITS_H
  23 #include <limits.h>
  24 #endif
  25
  26 #ifndef CHAR_BIT
  27 #define CHAR_BIT 8
  28 #endif
  29
  30 /* Position of cpu flags bitfiled.  */
  31
  32 enum
  33 {
  34   /* i186 or better required */
  35   Cpu186 = 0,
  36   /* i286 or better required */
  37   Cpu286,
  38   /* i386 or better required */
  39   Cpu386,
  40   /* i486 or better required */
  41   Cpu486,
  42   /* i585 or better required */
  43   Cpu586,
  44   /* i686 or better required */
  45   Cpu686,
  46   /* CMOV Instruction support required */
  47   CpuCMOV,
  48   /* FXSR Instruction support required */
  49   CpuFXSR,
  50   /* CLFLUSH Instruction support required */
  51   CpuClflush,
  52   /* NOP Instruction support required */
  53   CpuNop,
  54   /* SYSCALL Instructions support required */
  55   CpuSYSCALL,
  56   /* Floating point support required */
  57   Cpu8087,
  58   /* i287 support required */
  59   Cpu287,
  60   /* i387 support required */
  61   Cpu387,
  62   /* i686 and floating point support required */
  63   Cpu687,
  64   /* SSE3 and floating point support required */
  65   CpuFISTTP,
  66   /* MMX support required */
  67   CpuMMX,
  68   /* SSE support required */
  69   CpuSSE,
  70   /* SSE2 support required */
  71   CpuSSE2,
  72   /* 3dnow! support required */
  73   Cpu3dnow,
  74   /* 3dnow! Extensions support required */
  75   Cpu3dnowA,
  76   /* SSE3 support required */
  77   CpuSSE3,
  78   /* VIA PadLock required */
  79   CpuPadLock,
  80   /* AMD Secure Virtual Machine Ext-s required */
  81   CpuSVME,
  82   /* VMX Instructions required */
  83   CpuVMX,
  84   /* SMX Instructions required */
  85   CpuSMX,
  86   /* SSSE3 support required */
  87   CpuSSSE3,
  88   /* SSE4a support required */
  89   CpuSSE4a,
  90   /* ABM New Instructions required */
  91   CpuABM,
  92   /* SSE4.1 support required */
  93   CpuSSE4_1,
  94   /* SSE4.2 support required */
  95   CpuSSE4_2,
  96   /* AVX support required */
  97   CpuAVX,
  98   /* AVX2 support required */
  99   CpuAVX2,
 100   /* Intel AVX-512 Foundation Instructions support required */
 101   CpuAVX512F,
 102   /* Intel AVX-512 Conflict Detection Instructions support required */
 103   CpuAVX512CD,
 104   /* Intel AVX-512 Exponential and Reciprocal Instructions support
 105      required */
 106   CpuAVX512ER,
 107   /* Intel AVX-512 Prefetch Instructions support required */
 108   CpuAVX512PF,
 109   /* Intel AVX-512 VL Instructions support required.  */
 110   CpuAVX512VL,
 111   /* Intel AVX-512 DQ Instructions support required.  */
 112   CpuAVX512DQ,
 113   /* Intel AVX-512 BW Instructions support required.  */
 114   CpuAVX512BW,
 115   /* Intel L1OM support required */
 116   CpuL1OM,
 117   /* Intel K1OM support required */
 118   CpuK1OM,
 119   /* Intel IAMCU support required */
 120   CpuIAMCU,
 121   /* Xsave/xrstor New Instructions support required */
 122   CpuXsave,
 123   /* Xsaveopt New Instructions support required */
 124   CpuXsaveopt,
 125   /* AES support required */
 126   CpuAES,
 127   /* PCLMUL support required */
 128   CpuPCLMUL,
 129   /* FMA support required */
 130   CpuFMA,
 131   /* FMA4 support required */
 132   CpuFMA4,
 133   /* XOP support required */
 134   CpuXOP,
 135   /* LWP support required */
 136   CpuLWP,
 137   /* BMI support required */
 138   CpuBMI,
 139   /* TBM support required */
 140   CpuTBM,
 141   /* MOVBE Instruction support required */
 142   CpuMovbe,
 143   /* CMPXCHG16B instruction support required.  */
 144   CpuCX16,
 145   /* EPT Instructions required */
 146   CpuEPT,
 147   /* RDTSCP Instruction support required */
 148   CpuRdtscp,
 149   /* FSGSBASE Instructions required */
 150   CpuFSGSBase,
 151   /* RDRND Instructions required */
 152   CpuRdRnd,
 153   /* F16C Instructions required */
 154   CpuF16C,
 155   /* Intel BMI2 support required */
 156   CpuBMI2,
 157   /* LZCNT support required */
 158   CpuLZCNT,
 159   /* HLE support required */
 160   CpuHLE,
 161   /* RTM support required */
 162   CpuRTM,
 163   /* INVPCID Instructions required */
 164   CpuINVPCID,
 165   /* VMFUNC Instruction required */
 166   CpuVMFUNC,
 167   /* Intel MPX Instructions required  */
 168   CpuMPX,
 169   /* 64bit support available, used by -march= in assembler.  */
 170   CpuLM,
 171   /* RDRSEED instruction required.  */
 172   CpuRDSEED,
 173   /* Multi-presisionn add-carry instructions are required.  */
 174   CpuADX,
 175   /* Supports prefetchw and prefetch instructions.  */
 176   CpuPRFCHW,
 177   /* SMAP instructions required.  */
 178   CpuSMAP,
 179   /* SHA instructions required.  */
 180   CpuSHA,
 181   /* CLFLUSHOPT instruction required */
 182   CpuClflushOpt,
 183   /* XSAVES/XRSTORS instruction required */
 184   CpuXSAVES,
 185   /* XSAVEC instruction required */
 186   CpuXSAVEC,
 187   /* PREFETCHWT1 instruction required */
 188   CpuPREFETCHWT1,
 189   /* SE1 instruction required */
 190   CpuSE1,
 191   /* CLWB instruction required */
 192   CpuCLWB,
 193   /* Intel AVX-512 IFMA Instructions support required.  */
 194   CpuAVX512IFMA,
 195   /* Intel AVX-512 VBMI Instructions support required.  */
 196   CpuAVX512VBMI,
 197   /* Intel AVX-512 4FMAPS Instructions support required.  */
 198   CpuAVX512_4FMAPS,
 199   /* Intel AVX-512 4VNNIW Instructions support required.  */
 200   CpuAVX512_4VNNIW,
 201   /* Intel AVX-512 VPOPCNTDQ Instructions support required.  */
 202   CpuAVX512_VPOPCNTDQ,
 203   /* Intel AVX-512 VBMI2 Instructions support required.  */
 204   CpuAVX512_VBMI2,
 205   /* Intel AVX-512 VNNI Instructions support required.  */
 206   CpuAVX512_VNNI,
 207   /* Intel AVX-512 BITALG Instructions support required.  */
 208   CpuAVX512_BITALG,
 209   /* Intel AVX-512 BF16 Instructions support required.  */
 210   CpuAVX512_BF16,
 211   /* Intel AVX-512 VP2INTERSECT Instructions support required.  */
 212   CpuAVX512_VP2INTERSECT,
 213   /* mwaitx instruction required */
 214   CpuMWAITX,
 215   /* Clzero instruction required */
 216   CpuCLZERO,
 217   /* OSPKE instruction required */
 218   CpuOSPKE,
 219   /* RDPID instruction required */
 220   CpuRDPID,
 221   /* PTWRITE instruction required */
 222   CpuPTWRITE,
 223   /* CET instructions support required */
 224   CpuIBT,
 225   CpuSHSTK,
 226   /* GFNI instructions required */
 227   CpuGFNI,
 228   /* VAES instructions required */
 229   CpuVAES,
 230   /* VPCLMULQDQ instructions required */
 231   CpuVPCLMULQDQ,
 232   /* WBNOINVD instructions required */
 233   CpuWBNOINVD,
 234   /* PCONFIG instructions required */
 235   CpuPCONFIG,
 236   /* WAITPKG instructions required */
 237   CpuWAITPKG,
 238   /* CLDEMOTE instruction required */
 239   CpuCLDEMOTE,
 240   /* MOVDIRI instruction support required */
 241   CpuMOVDIRI,
 242   /* MOVDIRR64B instruction required */
 243   CpuMOVDIR64B,
 244   /* ENQCMD instruction required */
 245   CpuENQCMD,
 246   /* RDPRU instruction required */
 247   CpuRDPRU,
 248   /* MCOMMIT instruction required */
 249   CpuMCOMMIT,
 250   /* 64bit support required  */
 251   Cpu64,
 252   /* Not supported in the 64bit mode  */
 253   CpuNo64,
 254   /* The last bitfield in i386_cpu_flags.  */
 255   CpuMax = CpuNo64
 256 };
 257
 258 #define CpuNumOfUints \
 259   (CpuMax / sizeof (unsigned int) / CHAR_BIT + 1)
 260 #define CpuNumOfBits \
 261   (CpuNumOfUints * sizeof (unsigned int) * CHAR_BIT)
 262
 263 /* If you get a compiler error for zero width of the unused field,
 264    comment it out.  */
 265 #define CpuUnused       (CpuMax + 1)
 266
 267 /* We can check if an instruction is available with array instead
 268    of bitfield. */
 269 typedef union i386_cpu_flags
 270 {
 271   struct
 272     {
 273       unsigned int cpui186:1;
 274       unsigned int cpui286:1;
 275       unsigned int cpui386:1;
 276       unsigned int cpui486:1;
 277       unsigned int cpui586:1;
 278       unsigned int cpui686:1;
 279       unsigned int cpucmov:1;
 280       unsigned int cpufxsr:1;
 281       unsigned int cpuclflush:1;
 282       unsigned int cpunop:1;
 283       unsigned int cpusyscall:1;
 284       unsigned int cpu8087:1;
 285       unsigned int cpu287:1;
 286       unsigned int cpu387:1;
 287       unsigned int cpu687:1;
 288       unsigned int cpufisttp:1;
 289       unsigned int cpummx:1;
 290       unsigned int cpusse:1;
 291       unsigned int cpusse2:1;
 292       unsigned int cpua3dnow:1;
 293       unsigned int cpua3dnowa:1;
 294       unsigned int cpusse3:1;
 295       unsigned int cpupadlock:1;
 296       unsigned int cpusvme:1;
 297       unsigned int cpuvmx:1;
 298       unsigned int cpusmx:1;
 299       unsigned int cpussse3:1;
 300       unsigned int cpusse4a:1;
 301       unsigned int cpuabm:1;
 302       unsigned int cpusse4_1:1;
 303       unsigned int cpusse4_2:1;
 304       unsigned int cpuavx:1;
 305       unsigned int cpuavx2:1;
 306       unsigned int cpuavx512f:1;
 307       unsigned int cpuavx512cd:1;
 308       unsigned int cpuavx512er:1;
 309       unsigned int cpuavx512pf:1;
 310       unsigned int cpuavx512vl:1;
 311       unsigned int cpuavx512dq:1;
 312       unsigned int cpuavx512bw:1;
 313       unsigned int cpul1om:1;
 314       unsigned int cpuk1om:1;
 315       unsigned int cpuiamcu:1;
 316       unsigned int cpuxsave:1;
 317       unsigned int cpuxsaveopt:1;
 318       unsigned int cpuaes:1;
 319       unsigned int cpupclmul:1;
 320       unsigned int cpufma:1;
 321       unsigned int cpufma4:1;
 322       unsigned int cpuxop:1;
 323       unsigned int cpulwp:1;
 324       unsigned int cpubmi:1;
 325       unsigned int cputbm:1;
 326       unsigned int cpumovbe:1;
 327       unsigned int cpucx16:1;
 328       unsigned int cpuept:1;
 329       unsigned int cpurdtscp:1;
 330       unsigned int cpufsgsbase:1;
 331       unsigned int cpurdrnd:1;
 332       unsigned int cpuf16c:1;
 333       unsigned int cpubmi2:1;
 334       unsigned int cpulzcnt:1;
 335       unsigned int cpuhle:1;
 336       unsigned int cpurtm:1;
 337       unsigned int cpuinvpcid:1;
 338       unsigned int cpuvmfunc:1;
 339       unsigned int cpumpx:1;
 340       unsigned int cpulm:1;
 341       unsigned int cpurdseed:1;
 342       unsigned int cpuadx:1;
 343       unsigned int cpuprfchw:1;
 344       unsigned int cpusmap:1;
 345       unsigned int cpusha:1;
 346       unsigned int cpuclflushopt:1;
 347       unsigned int cpuxsaves:1;
 348       unsigned int cpuxsavec:1;
 349       unsigned int cpuprefetchwt1:1;
 350       unsigned int cpuse1:1;
 351       unsigned int cpuclwb:1;
 352       unsigned int cpuavx512ifma:1;
 353       unsigned int cpuavx512vbmi:1;
 354       unsigned int cpuavx512_4fmaps:1;
 355       unsigned int cpuavx512_4vnniw:1;
 356       unsigned int cpuavx512_vpopcntdq:1;
 357       unsigned int cpuavx512_vbmi2:1;
 358       unsigned int cpuavx512_vnni:1;
 359       unsigned int cpuavx512_bitalg:1;
 360       unsigned int cpuavx512_bf16:1;
 361       unsigned int cpuavx512_vp2intersect:1;
 362       unsigned int cpumwaitx:1;
 363       unsigned int cpuclzero:1;
 364       unsigned int cpuospke:1;
 365       unsigned int cpurdpid:1;
 366       unsigned int cpuptwrite:1;
 367       unsigned int cpuibt:1;
 368       unsigned int cpushstk:1;
 369       unsigned int cpugfni:1;
 370       unsigned int cpuvaes:1;
 371       unsigned int cpuvpclmulqdq:1;
 372       unsigned int cpuwbnoinvd:1;
 373       unsigned int cpupconfig:1;
 374       unsigned int cpuwaitpkg:1;
 375       unsigned int cpucldemote:1;
 376       unsigned int cpumovdiri:1;
 377       unsigned int cpumovdir64b:1;
 378       unsigned int cpuenqcmd:1;
 379       unsigned int cpurdpru:1;
 380       unsigned int cpumcommit:1;
 381       unsigned int cpu64:1;
 382       unsigned int cpuno64:1;
 383 #ifdef CpuUnused
 384       unsigned int unused:(CpuNumOfBits - CpuUnused);
 385 #endif
 386     } bitfield;
 387   unsigned int array[CpuNumOfUints];
 388 } i386_cpu_flags;
 389
 390 /* Position of opcode_modifier bits.  */
 391
 392 enum
 393 {
 394   /* has direction bit. */
 395   D = 0,
 396   /* set if operands can be both bytes and words/dwords/qwords, encoded the
 397      canonical way; the base_opcode field should hold the encoding for byte
 398      operands  */
 399   W,
 400   /* load form instruction. Must be placed before store form.  */
 401   Load,
 402   /* insn has a modrm byte. */
 403   Modrm,
 404   /* register is in low 3 bits of opcode */
 405   ShortForm,
 406   /* special case for jump insns.  */
 407   Jump,
 408   /* call and jump */
 409   JumpDword,
 410   /* loop and jecxz */
 411   JumpByte,
 412   /* special case for intersegment leaps/calls */
 413   JumpInterSegment,
 414   /* absolute address for jump */
 415   JumpAbsolute,
 416   /* FP insn memory format bit, sized by 0x4 */
 417   FloatMF,
 418   /* src/dest swap for floats. */
 419   FloatR,
 420   /* needs size prefix if in 32-bit mode */
 421 #define SIZE16 1
 422   /* needs size prefix if in 16-bit mode */
 423 #define SIZE32 2
 424   /* needs size prefix if in 64-bit mode */
 425 #define SIZE64 3
 426   Size,
 427   /* check register size.  */
 428   CheckRegSize,
 429   /* instruction ignores operand size prefix and in Intel mode ignores
 430      mnemonic size suffix check.  */
 431   IgnoreSize,
 432   /* default insn size depends on mode */
 433   DefaultSize,
 434   /* any memory size */
 435   Anysize,
 436   /* b suffix on instruction illegal */
 437   No_bSuf,
 438   /* w suffix on instruction illegal */
 439   No_wSuf,
 440   /* l suffix on instruction illegal */
 441   No_lSuf,
 442   /* s suffix on instruction illegal */
 443   No_sSuf,
 444   /* q suffix on instruction illegal */
 445   No_qSuf,
 446   /* long double suffix on instruction illegal */
 447   No_ldSuf,
 448   /* instruction needs FWAIT */
 449   FWait,
 450   /* IsString provides for a quick test for string instructions, and
 451      its actual value also indicates which of the operands (if any)
 452      requires use of the %es segment.  */
 453 #define IS_STRING_ES_OP0 2
 454 #define IS_STRING_ES_OP1 3
 455   IsString,
 456   /* RegMem is for instructions with a modrm byte where the register
 457      destination operand should be encoded in the mod and regmem fields.
 458      Normally, it will be encoded in the reg field. We add a RegMem
 459      flag to indicate that it should be encoded in the regmem field.  */
 460   RegMem,
 461   /* quick test if branch instruction is MPX supported */
 462   BNDPrefixOk,
 463   /* quick test if NOTRACK prefix is supported */
 464   NoTrackPrefixOk,
 465   /* quick test for lockable instructions */
 466   IsLockable,
 467   /* fake an extra reg operand for clr, imul and special register
 468      processing for some instructions.  */
 469   RegKludge,
 470   /* An implicit xmm0 as the first operand */
 471   Implicit1stXmm0,
 472   /* The HLE prefix is OK:
 473      1. With a LOCK prefix.
 474      2. With or without a LOCK prefix.
 475      3. With a RELEASE (0xf3) prefix.
 476    */
 477 #define HLEPrefixNone           0
 478 #define HLEPrefixLock           1
 479 #define HLEPrefixAny            2
 480 #define HLEPrefixRelease        3
 481   HLEPrefixOk,
 482   /* An instruction on which a "rep" prefix is acceptable.  */
 483   RepPrefixOk,
 484   /* Convert to DWORD */
 485   ToDword,
 486   /* Convert to QWORD */
 487   ToQword,
 488   /* Address prefix changes register operand */
 489   AddrPrefixOpReg,
 490   /* opcode is a prefix */
 491   IsPrefix,
 492   /* instruction has extension in 8 bit imm */
 493   ImmExt,
 494   /* instruction don't need Rex64 prefix.  */
 495   NoRex64,
 496   /* instruction require Rex64 prefix.  */
 497   Rex64,
 498   /* deprecated fp insn, gets a warning */
 499   Ugh,
 500   /* insn has VEX prefix:
 501         1: 128bit VEX prefix (or operand dependent).
 502         2: 256bit VEX prefix.
 503         3: Scalar VEX prefix.
 504    */
 505 #define VEX128          1
 506 #define VEX256          2
 507 #define VEXScalar       3
 508   Vex,
 509   /* How to encode VEX.vvvv:
 510      0: VEX.vvvv must be 1111b.
 511      1: VEX.NDS.  Register-only source is encoded in VEX.vvvv where
 512         the content of source registers will be preserved.
 513         VEX.DDS.  The second register operand is encoded in VEX.vvvv
 514         where the content of first source register will be overwritten
 515         by the result.
 516         VEX.NDD2.  The second destination register operand is encoded in
 517         VEX.vvvv for instructions with 2 destination register operands.
 518         For assembler, there are no difference between VEX.NDS, VEX.DDS
 519         and VEX.NDD2.
 520      2. VEX.NDD.  Register destination is encoded in VEX.vvvv for
 521      instructions with 1 destination register operand.
 522      3. VEX.LWP.  Register destination is encoded in VEX.vvvv and one
 523         of the operands can access a memory location.
 524    */
 525 #define VEXXDS  1
 526 #define VEXNDD  2
 527 #define VEXLWP  3
 528   VexVVVV,
 529   /* How the VEX.W bit is used:
 530      0: Set by the REX.W bit.
 531      1: VEX.W0.  Should always be 0.
 532      2: VEX.W1.  Should always be 1.
 533      3: VEX.WIG. The VEX.W bit is ignored.
 534    */
 535 #define VEXW0   1
 536 #define VEXW1   2
 537 #define VEXWIG  3
 538   VexW,
 539   /* VEX opcode prefix:
 540      0: VEX 0x0F opcode prefix.
 541      1: VEX 0x0F38 opcode prefix.
 542      2: VEX 0x0F3A opcode prefix
 543      3: XOP 0x08 opcode prefix.
 544      4: XOP 0x09 opcode prefix
 545      5: XOP 0x0A opcode prefix.
 546    */
 547 #define VEX0F           0
 548 #define VEX0F38         1
 549 #define VEX0F3A         2
 550 #define XOP08           3
 551 #define XOP09           4
 552 #define XOP0A           5
 553   VexOpcode,
 554   /* number of VEX source operands:
 555      0: <= 2 source operands.
 556      1: 2 XOP source operands.
 557      2: 3 source operands.
 558    */
 559 #define XOP2SOURCES     1
 560 #define VEX3SOURCES     2
 561   VexSources,
 562   /* Instruction with vector SIB byte:
 563         1: 128bit vector register.
 564         2: 256bit vector register.
 565         3: 512bit vector register.
 566    */
 567 #define VecSIB128       1
 568 #define VecSIB256       2
 569 #define VecSIB512       3
 570   VecSIB,
 571   /* SSE to AVX support required */
 572   SSE2AVX,
 573   /* No AVX equivalent */
 574   NoAVX,
 575
 576   /* insn has EVEX prefix:
 577         1: 512bit EVEX prefix.
 578         2: 128bit EVEX prefix.
 579         3: 256bit EVEX prefix.
 580         4: Length-ignored (LIG) EVEX prefix.
 581         5: Length determined from actual operands.
 582    */
 583 #define EVEX512                1
 584 #define EVEX128                2
 585 #define EVEX256                3
 586 #define EVEXLIG                4
 587 #define EVEXDYN                5
 588   EVex,
 589
 590   /* AVX512 masking support:
 591         1: Zeroing or merging masking depending on operands.
 592         2: Merging-masking.
 593         3: Both zeroing and merging masking.
 594    */
 595 #define DYNAMIC_MASKING 1
 596 #define MERGING_MASKING 2
 597 #define BOTH_MASKING    3
 598   Masking,
 599
 600   /* AVX512 broadcast support.  The number of bytes to broadcast is
 601      1 << (Broadcast - 1):
 602         1: Byte broadcast.
 603         2: Word broadcast.
 604         3: Dword broadcast.
 605         4: Qword broadcast.
 606    */
 607 #define BYTE_BROADCAST  1
 608 #define WORD_BROADCAST  2
 609 #define DWORD_BROADCAST 3
 610 #define QWORD_BROADCAST 4
 611   Broadcast,
 612
 613   /* Static rounding control is supported.  */
 614   StaticRounding,
 615
 616   /* Supress All Exceptions is supported.  */
 617   SAE,
 618
 619   /* Compressed Disp8*N attribute.  */
 620 #define DISP8_SHIFT_VL 7
 621   Disp8MemShift,
 622
 623   /* Default mask isn't allowed.  */
 624   NoDefMask,
 625
 626   /* The second operand must be a vector register, {x,y,z}mmN, where N is a multiple of 4.
 627      It implicitly denotes the register group of {x,y,z}mmN - {x,y,z}mm(N + 3).
 628    */
 629   ImplicitQuadGroup,
 630
 631   /* Support encoding optimization.  */
 632   Optimize,
 633
 634   /* AT&T mnemonic.  */
 635   ATTMnemonic,
 636   /* AT&T syntax.  */
 637   ATTSyntax,
 638   /* Intel syntax.  */
 639   IntelSyntax,
 640   /* AMD64.  */
 641   AMD64,
 642   /* Intel64.  */
 643   Intel64,
 644   /* The last bitfield in i386_opcode_modifier.  */
 645   Opcode_Modifier_Num
 646 };
 647
 648 typedef struct i386_opcode_modifier
 649 {
 650   unsigned int d:1;
 651   unsigned int w:1;
 652   unsigned int load:1;
 653   unsigned int modrm:1;
 654   unsigned int shortform:1;
 655   unsigned int jump:1;
 656   unsigned int jumpdword:1;
 657   unsigned int jumpbyte:1;
 658   unsigned int jumpintersegment:1;
 659   unsigned int jumpabsolute:1;
 660   unsigned int floatmf:1;
 661   unsigned int floatr:1;
 662   unsigned int size:2;
 663   unsigned int checkregsize:1;
 664   unsigned int ignoresize:1;
 665   unsigned int defaultsize:1;
 666   unsigned int anysize:1;
 667   unsigned int no_bsuf:1;
 668   unsigned int no_wsuf:1;
 669   unsigned int no_lsuf:1;
 670   unsigned int no_ssuf:1;
 671   unsigned int no_qsuf:1;
 672   unsigned int no_ldsuf:1;
 673   unsigned int fwait:1;
 674   unsigned int isstring:2;
 675   unsigned int regmem:1;
 676   unsigned int bndprefixok:1;
 677   unsigned int notrackprefixok:1;
 678   unsigned int islockable:1;
 679   unsigned int regkludge:1;
 680   unsigned int implicit1stxmm0:1;
 681   unsigned int hleprefixok:2;
 682   unsigned int repprefixok:1;
 683   unsigned int todword:1;
 684   unsigned int toqword:1;
 685   unsigned int addrprefixopreg:1;
 686   unsigned int isprefix:1;
 687   unsigned int immext:1;
 688   unsigned int norex64:1;
 689   unsigned int rex64:1;
 690   unsigned int ugh:1;
 691   unsigned int vex:2;
 692   unsigned int vexvvvv:2;
 693   unsigned int vexw:2;
 694   unsigned int vexopcode:3;
 695   unsigned int vexsources:2;
 696   unsigned int vecsib:2;
 697   unsigned int sse2avx:1;
 698   unsigned int noavx:1;
 699   unsigned int evex:3;
 700   unsigned int masking:2;
 701   unsigned int broadcast:3;
 702   unsigned int staticrounding:1;
 703   unsigned int sae:1;
 704   unsigned int disp8memshift:3;
 705   unsigned int nodefmask:1;
 706   unsigned int implicitquadgroup:1;
 707   unsigned int optimize:1;
 708   unsigned int attmnemonic:1;
 709   unsigned int attsyntax:1;
 710   unsigned int intelsyntax:1;
 711   unsigned int amd64:1;
 712   unsigned int intel64:1;
 713 } i386_opcode_modifier;
 714
 715 /* Operand classes.  */
 716
 717 #define CLASS_WIDTH 4
 718 enum operand_class
 719 {
 720   ClassNone,
 721   Reg, /* GPRs and FP regs, distinguished by operand size */
 722   SReg, /* Segment register */
 723   RegCR, /* Control register */
 724   RegDR, /* Debug register */
 725   RegTR, /* Test register */
 726   RegMMX, /* MMX register */
 727   RegSIMD, /* XMM/YMM/ZMM registers, distinguished by operand size */
 728   RegMask, /* Vector Mask register */
 729   RegBND, /* Bound register */
 730 };
 731
 732 /* Special operand instances.  */
 733
 734 #define INSTANCE_WIDTH 3
 735 enum operand_instance
 736 {
 737   InstanceNone,
 738   Accum, /* Accumulator %al/%ax/%eax/%rax/%st(0)/%xmm0 */
 739   RegC,  /* %cl / %cx / %ecx / %rcx, e.g. register to hold shift count */
 740   RegD,  /* %dl / %dx / %edx / %rdx, e.g. register to hold I/O port addr */
 741   RegB,  /* %bl / %bx / %ebx / %rbx */
 742 };
 743
 744 /* Position of operand_type bits.  */
 745
 746 enum
 747 {
 748   /* Class and Instance */
 749   ClassInstance = CLASS_WIDTH + INSTANCE_WIDTH - 1,
 750   /* 1 bit immediate */
 751   Imm1,
 752   /* 8 bit immediate */
 753   Imm8,
 754   /* 8 bit immediate sign extended */
 755   Imm8S,
 756   /* 16 bit immediate */
 757   Imm16,
 758   /* 32 bit immediate */
 759   Imm32,
 760   /* 32 bit immediate sign extended */
 761   Imm32S,
 762   /* 64 bit immediate */
 763   Imm64,
 764   /* 8bit/16bit/32bit displacements are used in different ways,
 765      depending on the instruction.  For jumps, they specify the
 766      size of the PC relative displacement, for instructions with
 767      memory operand, they specify the size of the offset relative
 768      to the base register, and for instructions with memory offset
 769      such as `mov 1234,%al' they specify the size of the offset
 770      relative to the segment base.  */
 771   /* 8 bit displacement */
 772   Disp8,
 773   /* 16 bit displacement */
 774   Disp16,
 775   /* 32 bit displacement */
 776   Disp32,
 777   /* 32 bit signed displacement */
 778   Disp32S,
 779   /* 64 bit displacement */
 780   Disp64,
 781   /* Register which can be used for base or index in memory operand.  */
 782   BaseIndex,
 783   /* BYTE size. */
 784   Byte,
 785   /* WORD size. 2 byte */
 786   Word,
 787   /* DWORD size. 4 byte */
 788   Dword,
 789   /* FWORD size. 6 byte */
 790   Fword,
 791   /* QWORD size. 8 byte */
 792   Qword,
 793   /* TBYTE size. 10 byte */
 794   Tbyte,
 795   /* XMMWORD size. */
 796   Xmmword,
 797   /* YMMWORD size. */
 798   Ymmword,
 799   /* ZMMWORD size.  */
 800   Zmmword,
 801   /* Unspecified memory size.  */
 802   Unspecified,
 803
 804   /* The number of bits in i386_operand_type.  */
 805   OTNum
 806 };
 807
 808 #define OTNumOfUints \
 809   ((OTNum - 1) / sizeof (unsigned int) / CHAR_BIT + 1)
 810 #define OTNumOfBits \
 811   (OTNumOfUints * sizeof (unsigned int) * CHAR_BIT)
 812
 813 /* If you get a compiler error for zero width of the unused field,
 814    comment it out.  */
 815 #define OTUnused                OTNum
 816
 817 typedef union i386_operand_type
 818 {
 819   struct
 820     {
 821       unsigned int class:CLASS_WIDTH;
 822       unsigned int instance:INSTANCE_WIDTH;
 823       unsigned int imm1:1;
 824       unsigned int imm8:1;
 825       unsigned int imm8s:1;
 826       unsigned int imm16:1;
 827       unsigned int imm32:1;
 828       unsigned int imm32s:1;
 829       unsigned int imm64:1;
 830       unsigned int disp8:1;
 831       unsigned int disp16:1;
 832       unsigned int disp32:1;
 833       unsigned int disp32s:1;
 834       unsigned int disp64:1;
 835       unsigned int baseindex:1;
 836       unsigned int byte:1;
 837       unsigned int word:1;
 838       unsigned int dword:1;
 839       unsigned int fword:1;
 840       unsigned int qword:1;
 841       unsigned int tbyte:1;
 842       unsigned int xmmword:1;
 843       unsigned int ymmword:1;
 844       unsigned int zmmword:1;
 845       unsigned int unspecified:1;
 846 #ifdef OTUnused
 847       unsigned int unused:(OTNumOfBits - OTUnused);
 848 #endif
 849     } bitfield;
 850   unsigned int array[OTNumOfUints];
 851 } i386_operand_type;
 852
 853 typedef struct insn_template
 854 {
 855   /* instruction name sans width suffix ("mov" for movl insns) */
 856   char *name;
 857
 858   /* base_opcode is the fundamental opcode byte without optional
 859      prefix(es).  */
 860   unsigned int base_opcode;
 861 #define Opcode_D        0x2 /* Direction bit:
 862                                set if Reg --> Regmem;
 863                                unset if Regmem --> Reg. */
 864 #define Opcode_FloatR   0x8 /* Bit to swap src/dest for float insns. */
 865 #define Opcode_FloatD 0x400 /* Direction bit for float insns. */
 866 #define Opcode_SIMD_FloatD 0x1 /* Direction bit for SIMD fp insns. */
 867 #define Opcode_SIMD_IntD 0x10 /* Direction bit for SIMD int insns. */
 868
 869   /* extension_opcode is the 3 bit extension for group <n> insns.
 870      This field is also used to store the 8-bit opcode suffix for the
 871      AMD 3DNow! instructions.
 872      If this template has no extension opcode (the usual case) use None
 873      Instructions */
 874   unsigned short extension_opcode;
 875 #define None 0xffff             /* If no extension_opcode is possible.  */
 876
 877   /* Opcode length.  */
 878   unsigned char opcode_length;
 879
 880   /* how many operands */
 881   unsigned char operands;
 882
 883   /* cpu feature flags */
 884   i386_cpu_flags cpu_flags;
 885
 886   /* the bits in opcode_modifier are used to generate the final opcode from
 887      the base_opcode.  These bits also are used to detect alternate forms of
 888      the same instruction */
 889   i386_opcode_modifier opcode_modifier;
 890
 891   /* operand_types[i] describes the type of operand i.  This is made
 892      by OR'ing together all of the possible type masks.  (e.g.
 893      'operand_types[i] = Reg|Imm' specifies that operand i can be
 894      either a register or an immediate operand.  */
 895   i386_operand_type operand_types[MAX_OPERANDS];
 896 }
 897 insn_template;
 898
 899 extern const insn_template i386_optab[];
 900
 901 /* these are for register name --> number & type hash lookup */
 902 typedef struct
 903 {
 904   char *reg_name;
 905   i386_operand_type reg_type;
 906   unsigned char reg_flags;
 907 #define RegRex      0x1  /* Extended register.  */
 908 #define RegRex64    0x2  /* Extended 8 bit register.  */
 909 #define RegVRex     0x4  /* Extended vector register.  */
 910   unsigned char reg_num;
 911 #define RegIP   ((unsigned char ) ~0)
 912 /* EIZ and RIZ are fake index registers.  */
 913 #define RegIZ   (RegIP - 1)
 914 /* FLAT is a fake segment register (Intel mode).  */
 915 #define RegFlat     ((unsigned char) ~0)
 916   signed char dw2_regnum[2];
 917 #define Dw2Inval (-1)
 918 }
 919 reg_entry;
 920
 921 /* Entries in i386_regtab.  */
 922 #define REGNAM_AL 1
 923 #define REGNAM_AX 25
 924 #define REGNAM_EAX 41
 925
 926 extern const reg_entry i386_regtab[];
 927 extern const unsigned int i386_regtab_size;
 928
 929 typedef struct
 930 {
 931   char *seg_name;
 932   unsigned int seg_prefix;
 933 }
 934 seg_entry;
 935
 936 extern const seg_entry cs;
 937 extern const seg_entry ds;
 938 extern const seg_entry ss;
 939 extern const seg_entry es;
 940 extern const seg_entry fs;
 941 extern const seg_entry gs;