1 /* Declarations for Intel 80386 opcode table
2 Copyright (C) 2007-2021 Free Software Foundation, Inc.
4 This file is part of the GNU opcodes library.
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)
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.
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
21 #include "opcode/i386.h"
27 /* Position of cpu flags bitfiled. */
31 /* i186 or better required */
33 /* i286 or better required */
35 /* i386 or better required */
37 /* i486 or better required */
39 /* i585 or better required */
41 /* i686 or better required */
43 /* CMOV Instruction support required */
45 /* FXSR Instruction support required */
47 /* CLFLUSH Instruction support required */
49 /* NOP Instruction support required */
51 /* SYSCALL Instructions support required */
53 /* Floating point support required */
55 /* i287 support required */
57 /* i387 support required */
59 /* i686 and floating point support required */
61 /* SSE3 and floating point support required */
63 /* MMX support required */
65 /* SSE support required */
67 /* SSE2 support required */
69 /* 3dnow! support required */
71 /* 3dnow! Extensions support required */
73 /* SSE3 support required */
75 /* VIA PadLock required */
77 /* AMD Secure Virtual Machine Ext-s required */
79 /* VMX Instructions required */
81 /* SMX Instructions required */
83 /* SSSE3 support required */
85 /* SSE4a support required */
87 /* LZCNT support required */
89 /* POPCNT support required */
91 /* SSE4.1 support required */
93 /* SSE4.2 support required */
95 /* AVX support required */
97 /* AVX2 support required */
99 /* Intel AVX-512 Foundation Instructions support required */
101 /* Intel AVX-512 Conflict Detection Instructions support required */
103 /* Intel AVX-512 Exponential and Reciprocal Instructions support
106 /* Intel AVX-512 Prefetch Instructions support required */
108 /* Intel AVX-512 VL Instructions support required. */
110 /* Intel AVX-512 DQ Instructions support required. */
112 /* Intel AVX-512 BW Instructions support required. */
114 /* Intel L1OM support required */
116 /* Intel K1OM support required */
118 /* Intel IAMCU support required */
120 /* Xsave/xrstor New Instructions support required */
122 /* Xsaveopt New Instructions support required */
124 /* AES support required */
126 /* PCLMUL support required */
128 /* FMA support required */
130 /* FMA4 support required */
132 /* XOP support required */
134 /* LWP support required */
136 /* BMI support required */
138 /* TBM support required */
140 /* MOVBE Instruction support required */
142 /* CMPXCHG16B instruction support required. */
144 /* EPT Instructions required */
146 /* RDTSCP Instruction support required */
148 /* FSGSBASE Instructions required */
150 /* RDRND Instructions required */
152 /* F16C Instructions required */
154 /* Intel BMI2 support required */
156 /* HLE support required */
158 /* RTM support required */
160 /* INVPCID Instructions required */
162 /* VMFUNC Instruction required */
164 /* Intel MPX Instructions required */
166 /* 64bit support available, used by -march= in assembler. */
168 /* RDRSEED instruction required. */
170 /* Multi-presisionn add-carry instructions are required. */
172 /* Supports prefetchw and prefetch instructions. */
174 /* SMAP instructions required. */
176 /* SHA instructions required. */
178 /* CLFLUSHOPT instruction required */
180 /* XSAVES/XRSTORS instruction required */
182 /* XSAVEC instruction required */
184 /* PREFETCHWT1 instruction required */
186 /* SE1 instruction required */
188 /* CLWB instruction required */
190 /* Intel AVX-512 IFMA Instructions support required. */
192 /* Intel AVX-512 VBMI Instructions support required. */
194 /* Intel AVX-512 4FMAPS Instructions support required. */
196 /* Intel AVX-512 4VNNIW Instructions support required. */
198 /* Intel AVX-512 VPOPCNTDQ Instructions support required. */
200 /* Intel AVX-512 VBMI2 Instructions support required. */
202 /* Intel AVX-512 VNNI Instructions support required. */
204 /* Intel AVX-512 BITALG Instructions support required. */
206 /* Intel AVX-512 BF16 Instructions support required. */
208 /* Intel AVX-512 VP2INTERSECT Instructions support required. */
209 CpuAVX512_VP2INTERSECT
,
210 /* TDX Instructions support required. */
212 /* Intel AVX VNNI Instructions support required. */
214 /* mwaitx instruction required */
216 /* Clzero instruction required */
218 /* OSPKE instruction required */
220 /* RDPID instruction required */
222 /* PTWRITE instruction required */
224 /* CET instructions support required */
227 /* AMX-INT8 instructions required */
229 /* AMX-BF16 instructions required */
231 /* AMX-TILE instructions required */
233 /* GFNI instructions required */
235 /* VAES instructions required */
237 /* VPCLMULQDQ instructions required */
239 /* WBNOINVD instructions required */
241 /* PCONFIG instructions required */
243 /* WAITPKG instructions required */
245 /* UINTR instructions required */
247 /* CLDEMOTE instruction required */
249 /* MOVDIRI instruction support required */
251 /* MOVDIRR64B instruction required */
253 /* ENQCMD instruction required */
255 /* SERIALIZE instruction required */
257 /* RDPRU instruction required */
259 /* MCOMMIT instruction required */
261 /* SEV-ES instruction(s) required */
263 /* TSXLDTRK instruction required */
265 /* KL instruction support required */
267 /* WideKL instruction support required */
269 /* HRESET instruction required */
271 /* INVLPGB instructions required */
273 /* TLBSYNC instructions required */
275 /* SNP instructions required */
277 /* 64bit support required */
279 /* Not supported in the 64bit mode */
281 /* The last bitfield in i386_cpu_flags. */
285 #define CpuNumOfUints \
286 (CpuMax / sizeof (unsigned int) / CHAR_BIT + 1)
287 #define CpuNumOfBits \
288 (CpuNumOfUints * sizeof (unsigned int) * CHAR_BIT)
290 /* If you get a compiler error for zero width of the unused field,
292 #define CpuUnused (CpuMax + 1)
294 /* We can check if an instruction is available with array instead
296 typedef union i386_cpu_flags
300 unsigned int cpui186
:1;
301 unsigned int cpui286
:1;
302 unsigned int cpui386
:1;
303 unsigned int cpui486
:1;
304 unsigned int cpui586
:1;
305 unsigned int cpui686
:1;
306 unsigned int cpucmov
:1;
307 unsigned int cpufxsr
:1;
308 unsigned int cpuclflush
:1;
309 unsigned int cpunop
:1;
310 unsigned int cpusyscall
:1;
311 unsigned int cpu8087
:1;
312 unsigned int cpu287
:1;
313 unsigned int cpu387
:1;
314 unsigned int cpu687
:1;
315 unsigned int cpufisttp
:1;
316 unsigned int cpummx
:1;
317 unsigned int cpusse
:1;
318 unsigned int cpusse2
:1;
319 unsigned int cpua3dnow
:1;
320 unsigned int cpua3dnowa
:1;
321 unsigned int cpusse3
:1;
322 unsigned int cpupadlock
:1;
323 unsigned int cpusvme
:1;
324 unsigned int cpuvmx
:1;
325 unsigned int cpusmx
:1;
326 unsigned int cpussse3
:1;
327 unsigned int cpusse4a
:1;
328 unsigned int cpulzcnt
:1;
329 unsigned int cpupopcnt
:1;
330 unsigned int cpusse4_1
:1;
331 unsigned int cpusse4_2
:1;
332 unsigned int cpuavx
:1;
333 unsigned int cpuavx2
:1;
334 unsigned int cpuavx512f
:1;
335 unsigned int cpuavx512cd
:1;
336 unsigned int cpuavx512er
:1;
337 unsigned int cpuavx512pf
:1;
338 unsigned int cpuavx512vl
:1;
339 unsigned int cpuavx512dq
:1;
340 unsigned int cpuavx512bw
:1;
341 unsigned int cpul1om
:1;
342 unsigned int cpuk1om
:1;
343 unsigned int cpuiamcu
:1;
344 unsigned int cpuxsave
:1;
345 unsigned int cpuxsaveopt
:1;
346 unsigned int cpuaes
:1;
347 unsigned int cpupclmul
:1;
348 unsigned int cpufma
:1;
349 unsigned int cpufma4
:1;
350 unsigned int cpuxop
:1;
351 unsigned int cpulwp
:1;
352 unsigned int cpubmi
:1;
353 unsigned int cputbm
:1;
354 unsigned int cpumovbe
:1;
355 unsigned int cpucx16
:1;
356 unsigned int cpuept
:1;
357 unsigned int cpurdtscp
:1;
358 unsigned int cpufsgsbase
:1;
359 unsigned int cpurdrnd
:1;
360 unsigned int cpuf16c
:1;
361 unsigned int cpubmi2
:1;
362 unsigned int cpuhle
:1;
363 unsigned int cpurtm
:1;
364 unsigned int cpuinvpcid
:1;
365 unsigned int cpuvmfunc
:1;
366 unsigned int cpumpx
:1;
367 unsigned int cpulm
:1;
368 unsigned int cpurdseed
:1;
369 unsigned int cpuadx
:1;
370 unsigned int cpuprfchw
:1;
371 unsigned int cpusmap
:1;
372 unsigned int cpusha
:1;
373 unsigned int cpuclflushopt
:1;
374 unsigned int cpuxsaves
:1;
375 unsigned int cpuxsavec
:1;
376 unsigned int cpuprefetchwt1
:1;
377 unsigned int cpuse1
:1;
378 unsigned int cpuclwb
:1;
379 unsigned int cpuavx512ifma
:1;
380 unsigned int cpuavx512vbmi
:1;
381 unsigned int cpuavx512_4fmaps
:1;
382 unsigned int cpuavx512_4vnniw
:1;
383 unsigned int cpuavx512_vpopcntdq
:1;
384 unsigned int cpuavx512_vbmi2
:1;
385 unsigned int cpuavx512_vnni
:1;
386 unsigned int cpuavx512_bitalg
:1;
387 unsigned int cpuavx512_bf16
:1;
388 unsigned int cpuavx512_vp2intersect
:1;
389 unsigned int cputdx
:1;
390 unsigned int cpuavx_vnni
:1;
391 unsigned int cpumwaitx
:1;
392 unsigned int cpuclzero
:1;
393 unsigned int cpuospke
:1;
394 unsigned int cpurdpid
:1;
395 unsigned int cpuptwrite
:1;
396 unsigned int cpuibt
:1;
397 unsigned int cpushstk
:1;
398 unsigned int cpuamx_int8
:1;
399 unsigned int cpuamx_bf16
:1;
400 unsigned int cpuamx_tile
:1;
401 unsigned int cpugfni
:1;
402 unsigned int cpuvaes
:1;
403 unsigned int cpuvpclmulqdq
:1;
404 unsigned int cpuwbnoinvd
:1;
405 unsigned int cpupconfig
:1;
406 unsigned int cpuwaitpkg
:1;
407 unsigned int cpuuintr
:1;
408 unsigned int cpucldemote
:1;
409 unsigned int cpumovdiri
:1;
410 unsigned int cpumovdir64b
:1;
411 unsigned int cpuenqcmd
:1;
412 unsigned int cpuserialize
:1;
413 unsigned int cpurdpru
:1;
414 unsigned int cpumcommit
:1;
415 unsigned int cpusev_es
:1;
416 unsigned int cputsxldtrk
:1;
417 unsigned int cpukl
:1;
418 unsigned int cpuwidekl
:1;
419 unsigned int cpuhreset
:1;
420 unsigned int cpuinvlpgb
:1;
421 unsigned int cputlbsync
:1;
422 unsigned int cpusnp
:1;
423 unsigned int cpu64
:1;
424 unsigned int cpuno64
:1;
426 unsigned int unused
:(CpuNumOfBits
- CpuUnused
);
429 unsigned int array
[CpuNumOfUints
];
432 /* Position of opcode_modifier bits. */
436 /* has direction bit. */
438 /* set if operands can be both bytes and words/dwords/qwords, encoded the
439 canonical way; the base_opcode field should hold the encoding for byte
442 /* load form instruction. Must be placed before store form. */
444 /* insn has a modrm byte. */
446 /* special case for jump insns; value has to be 1 */
452 /* special case for intersegment leaps/calls */
453 #define JUMP_INTERSEGMENT 4
454 /* absolute address for jump */
455 #define JUMP_ABSOLUTE 5
457 /* FP insn memory format bit, sized by 0x4 */
459 /* src/dest swap for floats. */
461 /* needs size prefix if in 32-bit mode */
463 /* needs size prefix if in 16-bit mode */
465 /* needs size prefix if in 64-bit mode */
468 /* check register size. */
470 /* instruction ignores operand size prefix and in Intel mode ignores
471 mnemonic size suffix check. */
473 /* default insn size depends on mode */
474 #define DEFAULTSIZE 2
476 /* any memory size */
478 /* b suffix on instruction illegal */
480 /* w suffix on instruction illegal */
482 /* l suffix on instruction illegal */
484 /* s suffix on instruction illegal */
486 /* q suffix on instruction illegal */
488 /* long double suffix on instruction illegal */
490 /* instruction needs FWAIT */
492 /* IsString provides for a quick test for string instructions, and
493 its actual value also indicates which of the operands (if any)
494 requires use of the %es segment. */
495 #define IS_STRING_ES_OP0 2
496 #define IS_STRING_ES_OP1 3
498 /* RegMem is for instructions with a modrm byte where the register
499 destination operand should be encoded in the mod and regmem fields.
500 Normally, it will be encoded in the reg field. We add a RegMem
501 flag to indicate that it should be encoded in the regmem field. */
503 /* quick test if branch instruction is MPX supported */
505 /* fake an extra reg operand for clr, imul and special register
506 processing for some instructions. */
508 /* An implicit xmm0 as the first operand */
512 #define PrefixHLERelease 2 /* Okay with an XRELEASE (0xf3) prefix. */
513 #define PrefixNoTrack 3
514 /* Prefixes implying "LOCK okay" must come after Lock. All others have
517 #define PrefixHLELock 5 /* Okay with a LOCK prefix. */
518 #define PrefixHLEAny 6 /* Okay with or without a LOCK prefix. */
520 /* Convert to DWORD */
522 /* Convert to QWORD */
524 /* Address prefix changes register operand */
526 /* opcode is a prefix */
528 /* instruction has extension in 8 bit imm */
530 /* instruction don't need Rex64 prefix. */
532 /* deprecated fp insn, gets a warning */
534 /* Intel AVX Instructions support via {vex} prefix */
536 /* insn has VEX prefix:
537 1: 128bit VEX prefix (or operand dependent).
538 2: 256bit VEX prefix.
539 3: Scalar VEX prefix.
545 /* How to encode VEX.vvvv:
546 0: VEX.vvvv must be 1111b.
547 1: VEX.NDS. Register-only source is encoded in VEX.vvvv where
548 the content of source registers will be preserved.
549 VEX.DDS. The second register operand is encoded in VEX.vvvv
550 where the content of first source register will be overwritten
552 VEX.NDD2. The second destination register operand is encoded in
553 VEX.vvvv for instructions with 2 destination register operands.
554 For assembler, there are no difference between VEX.NDS, VEX.DDS
556 2. VEX.NDD. Register destination is encoded in VEX.vvvv for
557 instructions with 1 destination register operand.
558 3. VEX.LWP. Register destination is encoded in VEX.vvvv and one
559 of the operands can access a memory location.
565 /* How the VEX.W bit is used:
566 0: Set by the REX.W bit.
567 1: VEX.W0. Should always be 0.
568 2: VEX.W1. Should always be 1.
569 3: VEX.WIG. The VEX.W bit is ignored.
575 /* Opcode encoding space (values chosen to be usable directly in
576 VEX/XOP mmmmm and EVEX mm fields):
577 0: Base opcode space.
578 1: 0F opcode prefix / space.
579 2: 0F38 opcode prefix / space.
580 3: 0F3A opcode prefix / space.
581 8: XOP 08 opcode space.
582 9: XOP 09 opcode space.
583 A: XOP 0A opcode space.
589 #define SPACE_XOP08 8
590 #define SPACE_XOP09 9
591 #define SPACE_XOP0A 0xA
593 /* Opcode prefix (values chosen to be usable directly in
594 VEX/XOP/EVEX pp fields):
596 1: Add 0x66 opcode prefix.
597 2: Add 0xf3 opcode prefix.
598 3: Add 0xf2 opcode prefix.
600 #define PREFIX_NONE 0
601 #define PREFIX_0X66 1
602 #define PREFIX_0XF3 2
603 #define PREFIX_0XF2 3
605 /* number of VEX source operands:
606 0: <= 2 source operands.
607 1: 2 XOP source operands.
608 2: 3 source operands.
610 #define XOP2SOURCES 1
611 #define VEX3SOURCES 2
613 /* Instruction with a mandatory SIB byte:
614 1: 128bit vector register.
615 2: 256bit vector register.
616 3: 512bit vector register.
624 /* SSE to AVX support required */
626 /* No AVX equivalent */
629 /* insn has EVEX prefix:
630 1: 512bit EVEX prefix.
631 2: 128bit EVEX prefix.
632 3: 256bit EVEX prefix.
633 4: Length-ignored (LIG) EVEX prefix.
634 5: Length determined from actual operands.
643 /* AVX512 masking support:
644 1: Zeroing or merging masking depending on operands.
646 3: Both zeroing and merging masking.
648 #define DYNAMIC_MASKING 1
649 #define MERGING_MASKING 2
650 #define BOTH_MASKING 3
653 /* AVX512 broadcast support. The number of bytes to broadcast is
654 1 << (Broadcast - 1):
660 #define BYTE_BROADCAST 1
661 #define WORD_BROADCAST 2
662 #define DWORD_BROADCAST 3
663 #define QWORD_BROADCAST 4
666 /* Static rounding control is supported. */
669 /* Supress All Exceptions is supported. */
672 /* Compressed Disp8*N attribute. */
673 #define DISP8_SHIFT_VL 7
676 /* Default mask isn't allowed. */
679 /* The second operand must be a vector register, {x,y,z}mmN, where N is a multiple of 4.
680 It implicitly denotes the register group of {x,y,z}mmN - {x,y,z}mm(N + 3).
684 /* Two source operands are swapped. */
687 /* Support encoding optimization. */
696 /* ISA64: Don't change the order without other code adjustments.
697 0: Common to AMD64 and Intel64.
704 #define INTEL64ONLY 3
706 /* The last bitfield in i386_opcode_modifier. */
710 typedef struct i386_opcode_modifier
715 unsigned int modrm
:1;
717 unsigned int floatmf
:1;
718 unsigned int floatr
:1;
720 unsigned int checkregsize
:1;
721 unsigned int mnemonicsize
:2;
722 unsigned int anysize
:1;
723 unsigned int no_bsuf
:1;
724 unsigned int no_wsuf
:1;
725 unsigned int no_lsuf
:1;
726 unsigned int no_ssuf
:1;
727 unsigned int no_qsuf
:1;
728 unsigned int no_ldsuf
:1;
729 unsigned int fwait
:1;
730 unsigned int isstring
:2;
731 unsigned int regmem
:1;
732 unsigned int bndprefixok
:1;
733 unsigned int regkludge
:1;
734 unsigned int implicit1stxmm0
:1;
735 unsigned int prefixok
:3;
736 unsigned int todword
:1;
737 unsigned int toqword
:1;
738 unsigned int addrprefixopreg
:1;
739 unsigned int isprefix
:1;
740 unsigned int immext
:1;
741 unsigned int norex64
:1;
743 unsigned int pseudovexprefix
:1;
745 unsigned int vexvvvv
:2;
747 unsigned int opcodespace
:4;
748 unsigned int opcodeprefix
:2;
749 unsigned int vexsources
:2;
751 unsigned int sse2avx
:1;
752 unsigned int noavx
:1;
754 unsigned int masking
:2;
755 unsigned int broadcast
:3;
756 unsigned int staticrounding
:1;
758 unsigned int disp8memshift
:3;
759 unsigned int nodefmask
:1;
760 unsigned int implicitquadgroup
:1;
761 unsigned int swapsources
:1;
762 unsigned int optimize
:1;
763 unsigned int attmnemonic
:1;
764 unsigned int attsyntax
:1;
765 unsigned int intelsyntax
:1;
766 unsigned int isa64
:2;
767 } i386_opcode_modifier
;
769 /* Operand classes. */
771 #define CLASS_WIDTH 4
775 Reg
, /* GPRs and FP regs, distinguished by operand size */
776 SReg
, /* Segment register */
777 RegCR
, /* Control register */
778 RegDR
, /* Debug register */
779 RegTR
, /* Test register */
780 RegMMX
, /* MMX register */
781 RegSIMD
, /* XMM/YMM/ZMM registers, distinguished by operand size */
782 RegMask
, /* Vector Mask register */
783 RegBND
, /* Bound register */
786 /* Special operand instances. */
788 #define INSTANCE_WIDTH 3
789 enum operand_instance
792 Accum
, /* Accumulator %al/%ax/%eax/%rax/%st(0)/%xmm0 */
793 RegC
, /* %cl / %cx / %ecx / %rcx, e.g. register to hold shift count */
794 RegD
, /* %dl / %dx / %edx / %rdx, e.g. register to hold I/O port addr */
795 RegB
, /* %bl / %bx / %ebx / %rbx */
798 /* Position of operand_type bits. */
802 /* Class and Instance */
803 ClassInstance
= CLASS_WIDTH
+ INSTANCE_WIDTH
- 1,
804 /* 1 bit immediate */
806 /* 8 bit immediate */
808 /* 8 bit immediate sign extended */
810 /* 16 bit immediate */
812 /* 32 bit immediate */
814 /* 32 bit immediate sign extended */
816 /* 64 bit immediate */
818 /* 8bit/16bit/32bit displacements are used in different ways,
819 depending on the instruction. For jumps, they specify the
820 size of the PC relative displacement, for instructions with
821 memory operand, they specify the size of the offset relative
822 to the base register, and for instructions with memory offset
823 such as `mov 1234,%al' they specify the size of the offset
824 relative to the segment base. */
825 /* 8 bit displacement */
827 /* 16 bit displacement */
829 /* 32 bit displacement */
831 /* 32 bit signed displacement */
833 /* 64 bit displacement */
835 /* Register which can be used for base or index in memory operand. */
839 /* WORD size. 2 byte */
841 /* DWORD size. 4 byte */
843 /* FWORD size. 6 byte */
845 /* QWORD size. 8 byte */
847 /* TBYTE size. 10 byte */
857 /* Unspecified memory size. */
860 /* The number of bits in i386_operand_type. */
864 #define OTNumOfUints \
865 ((OTNum - 1) / sizeof (unsigned int) / CHAR_BIT + 1)
866 #define OTNumOfBits \
867 (OTNumOfUints * sizeof (unsigned int) * CHAR_BIT)
869 /* If you get a compiler error for zero width of the unused field,
871 #define OTUnused OTNum
873 typedef union i386_operand_type
877 unsigned int class:CLASS_WIDTH
;
878 unsigned int instance
:INSTANCE_WIDTH
;
881 unsigned int imm8s
:1;
882 unsigned int imm16
:1;
883 unsigned int imm32
:1;
884 unsigned int imm32s
:1;
885 unsigned int imm64
:1;
886 unsigned int disp8
:1;
887 unsigned int disp16
:1;
888 unsigned int disp32
:1;
889 unsigned int disp32s
:1;
890 unsigned int disp64
:1;
891 unsigned int baseindex
:1;
894 unsigned int dword
:1;
895 unsigned int fword
:1;
896 unsigned int qword
:1;
897 unsigned int tbyte
:1;
898 unsigned int xmmword
:1;
899 unsigned int ymmword
:1;
900 unsigned int zmmword
:1;
901 unsigned int tmmword
:1;
902 unsigned int unspecified
:1;
904 unsigned int unused
:(OTNumOfBits
- OTUnused
);
907 unsigned int array
[OTNumOfUints
];
910 typedef struct insn_template
912 /* instruction name sans width suffix ("mov" for movl insns) */
915 /* base_opcode is the fundamental opcode byte without optional
917 unsigned int base_opcode
:16;
918 #define Opcode_D 0x2 /* Direction bit:
919 set if Reg --> Regmem;
920 unset if Regmem --> Reg. */
921 #define Opcode_FloatR 0x8 /* Bit to swap src/dest for float insns. */
922 #define Opcode_FloatD 0x400 /* Direction bit for float insns. */
923 #define Opcode_SIMD_FloatD 0x1 /* Direction bit for SIMD fp insns. */
924 #define Opcode_SIMD_IntD 0x10 /* Direction bit for SIMD int insns. */
926 /* (Fake) base opcode value for pseudo prefixes. */
927 #define PSEUDO_PREFIX 0
929 /* extension_opcode is the 3 bit extension for group <n> insns.
930 This field is also used to store the 8-bit opcode suffix for the
931 AMD 3DNow! instructions.
932 If this template has no extension opcode (the usual case) use None
934 signed int extension_opcode
:9;
935 #define None (-1) /* If no extension_opcode is possible. */
937 /* Pseudo prefixes. */
938 #define Prefix_Disp8 0 /* {disp8} */
939 #define Prefix_Disp16 1 /* {disp16} */
940 #define Prefix_Disp32 2 /* {disp32} */
941 #define Prefix_Load 3 /* {load} */
942 #define Prefix_Store 4 /* {store} */
943 #define Prefix_VEX 5 /* {vex} */
944 #define Prefix_VEX3 6 /* {vex3} */
945 #define Prefix_EVEX 7 /* {evex} */
946 #define Prefix_REX 8 /* {rex} */
947 #define Prefix_NoOptimize 9 /* {nooptimize} */
949 /* how many operands */
950 unsigned int operands
:3;
952 /* the bits in opcode_modifier are used to generate the final opcode from
953 the base_opcode. These bits also are used to detect alternate forms of
954 the same instruction */
955 i386_opcode_modifier opcode_modifier
;
957 /* cpu feature flags */
958 i386_cpu_flags cpu_flags
;
960 /* operand_types[i] describes the type of operand i. This is made
961 by OR'ing together all of the possible type masks. (e.g.
962 'operand_types[i] = Reg|Imm' specifies that operand i can be
963 either a register or an immediate operand. */
964 i386_operand_type operand_types
[MAX_OPERANDS
];
968 extern const insn_template i386_optab
[];
970 /* these are for register name --> number & type hash lookup */
973 const char *reg_name
;
974 i386_operand_type reg_type
;
975 unsigned char reg_flags
;
976 #define RegRex 0x1 /* Extended register. */
977 #define RegRex64 0x2 /* Extended 8 bit register. */
978 #define RegVRex 0x4 /* Extended vector register. */
979 unsigned char reg_num
;
980 #define RegIP ((unsigned char ) ~0)
981 /* EIZ and RIZ are fake index registers. */
982 #define RegIZ (RegIP - 1)
983 /* FLAT is a fake segment register (Intel mode). */
984 #define RegFlat ((unsigned char) ~0)
985 signed char dw2_regnum
[2];
986 #define Dw2Inval (-1)
990 extern const reg_entry i386_regtab
[];
991 extern const unsigned int i386_regtab_size
;
992 extern const unsigned char i386_seg_prefixes
[6];