1 /* Declarations for Intel 80386 opcode table
2 Copyright (C) 2007-2022 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 IAMCU support required */
116 /* Xsave/xrstor New Instructions support required */
118 /* Xsaveopt New Instructions support required */
120 /* AES support required */
122 /* PCLMUL support required */
124 /* FMA support required */
126 /* FMA4 support required */
128 /* XOP support required */
130 /* LWP support required */
132 /* BMI support required */
134 /* TBM support required */
136 /* MOVBE Instruction support required */
138 /* CMPXCHG16B instruction support required. */
140 /* EPT Instructions required */
142 /* RDTSCP Instruction support required */
144 /* FSGSBASE Instructions required */
146 /* RDRND Instructions required */
148 /* F16C Instructions required */
150 /* Intel BMI2 support required */
152 /* HLE support required */
154 /* RTM support required */
156 /* INVPCID Instructions required */
158 /* VMFUNC Instruction required */
160 /* Intel MPX Instructions required */
162 /* 64bit support available, used by -march= in assembler. */
164 /* RDRSEED instruction required. */
166 /* Multi-presisionn add-carry instructions are required. */
168 /* Supports prefetchw and prefetch instructions. */
170 /* SMAP instructions required. */
172 /* SHA instructions required. */
174 /* CLFLUSHOPT instruction required */
176 /* XSAVES/XRSTORS instruction required */
178 /* XSAVEC instruction required */
180 /* PREFETCHWT1 instruction required */
182 /* SE1 instruction required */
184 /* CLWB instruction required */
186 /* Intel AVX-512 IFMA Instructions support required. */
188 /* Intel AVX-512 VBMI Instructions support required. */
190 /* Intel AVX-512 4FMAPS Instructions support required. */
192 /* Intel AVX-512 4VNNIW Instructions support required. */
194 /* Intel AVX-512 VPOPCNTDQ Instructions support required. */
196 /* Intel AVX-512 VBMI2 Instructions support required. */
198 /* Intel AVX-512 VNNI Instructions support required. */
200 /* Intel AVX-512 BITALG Instructions support required. */
202 /* Intel AVX-512 BF16 Instructions support required. */
204 /* Intel AVX-512 VP2INTERSECT Instructions support required. */
205 CpuAVX512_VP2INTERSECT,
206 /* TDX Instructions support required. */
208 /* Intel AVX VNNI Instructions support required. */
210 /* Intel AVX-512 FP16 Instructions support required. */
212 /* mwaitx instruction required */
214 /* Clzero instruction required */
216 /* OSPKE instruction required */
218 /* RDPID instruction required */
220 /* PTWRITE instruction required */
222 /* CET instructions support required */
225 /* AMX-INT8 instructions required */
227 /* AMX-BF16 instructions required */
229 /* AMX-TILE instructions required */
231 /* GFNI instructions required */
233 /* VAES instructions required */
235 /* VPCLMULQDQ instructions required */
237 /* WBNOINVD instructions required */
239 /* PCONFIG instructions required */
241 /* WAITPKG instructions required */
243 /* UINTR instructions required */
245 /* CLDEMOTE instruction required */
247 /* MOVDIRI instruction support required */
249 /* MOVDIRR64B instruction required */
251 /* ENQCMD instruction required */
253 /* SERIALIZE instruction required */
255 /* RDPRU instruction required */
257 /* MCOMMIT instruction required */
259 /* SEV-ES instruction(s) required */
261 /* TSXLDTRK instruction required */
263 /* KL instruction support required */
265 /* WideKL instruction support required */
267 /* HRESET instruction required */
269 /* INVLPGB instructions required */
271 /* TLBSYNC instructions required */
273 /* SNP instructions required */
276 /* NOTE: These last three items need to remain last and in this order. */
278 /* 64bit support required */
280 /* Not supported in the 64bit mode */
282 /* The last bitfield in i386_cpu_flags. */
286 #define CpuNumOfUints \
287 (CpuMax / sizeof (unsigned int) / CHAR_BIT + 1)
288 #define CpuNumOfBits \
289 (CpuNumOfUints * sizeof (unsigned int) * CHAR_BIT)
291 /* If you get a compiler error for zero width of the unused field,
293 #define CpuUnused (CpuMax + 1)
295 /* We can check if an instruction is available with array instead
297 typedef union i386_cpu_flags
301 unsigned int cpui186:1;
302 unsigned int cpui286:1;
303 unsigned int cpui386:1;
304 unsigned int cpui486:1;
305 unsigned int cpui586:1;
306 unsigned int cpui686:1;
307 unsigned int cpucmov:1;
308 unsigned int cpufxsr:1;
309 unsigned int cpuclflush:1;
310 unsigned int cpunop:1;
311 unsigned int cpusyscall:1;
312 unsigned int cpu8087:1;
313 unsigned int cpu287:1;
314 unsigned int cpu387:1;
315 unsigned int cpu687:1;
316 unsigned int cpufisttp:1;
317 unsigned int cpummx:1;
318 unsigned int cpusse:1;
319 unsigned int cpusse2:1;
320 unsigned int cpua3dnow:1;
321 unsigned int cpua3dnowa:1;
322 unsigned int cpusse3:1;
323 unsigned int cpupadlock:1;
324 unsigned int cpusvme:1;
325 unsigned int cpuvmx:1;
326 unsigned int cpusmx:1;
327 unsigned int cpussse3:1;
328 unsigned int cpusse4a:1;
329 unsigned int cpulzcnt:1;
330 unsigned int cpupopcnt:1;
331 unsigned int cpusse4_1:1;
332 unsigned int cpusse4_2:1;
333 unsigned int cpuavx:1;
334 unsigned int cpuavx2:1;
335 unsigned int cpuavx512f:1;
336 unsigned int cpuavx512cd:1;
337 unsigned int cpuavx512er:1;
338 unsigned int cpuavx512pf:1;
339 unsigned int cpuavx512vl:1;
340 unsigned int cpuavx512dq:1;
341 unsigned int cpuavx512bw:1;
342 unsigned int cpuiamcu:1;
343 unsigned int cpuxsave:1;
344 unsigned int cpuxsaveopt:1;
345 unsigned int cpuaes:1;
346 unsigned int cpupclmul:1;
347 unsigned int cpufma:1;
348 unsigned int cpufma4:1;
349 unsigned int cpuxop:1;
350 unsigned int cpulwp:1;
351 unsigned int cpubmi:1;
352 unsigned int cputbm:1;
353 unsigned int cpumovbe:1;
354 unsigned int cpucx16:1;
355 unsigned int cpuept:1;
356 unsigned int cpurdtscp:1;
357 unsigned int cpufsgsbase:1;
358 unsigned int cpurdrnd:1;
359 unsigned int cpuf16c:1;
360 unsigned int cpubmi2:1;
361 unsigned int cpuhle:1;
362 unsigned int cpurtm:1;
363 unsigned int cpuinvpcid:1;
364 unsigned int cpuvmfunc:1;
365 unsigned int cpumpx:1;
366 unsigned int cpulm:1;
367 unsigned int cpurdseed:1;
368 unsigned int cpuadx:1;
369 unsigned int cpuprfchw:1;
370 unsigned int cpusmap:1;
371 unsigned int cpusha:1;
372 unsigned int cpuclflushopt:1;
373 unsigned int cpuxsaves:1;
374 unsigned int cpuxsavec:1;
375 unsigned int cpuprefetchwt1:1;
376 unsigned int cpuse1:1;
377 unsigned int cpuclwb:1;
378 unsigned int cpuavx512ifma:1;
379 unsigned int cpuavx512vbmi:1;
380 unsigned int cpuavx512_4fmaps:1;
381 unsigned int cpuavx512_4vnniw:1;
382 unsigned int cpuavx512_vpopcntdq:1;
383 unsigned int cpuavx512_vbmi2:1;
384 unsigned int cpuavx512_vnni:1;
385 unsigned int cpuavx512_bitalg:1;
386 unsigned int cpuavx512_bf16:1;
387 unsigned int cpuavx512_vp2intersect:1;
388 unsigned int cputdx:1;
389 unsigned int cpuavx_vnni:1;
390 unsigned int cpuavx512_fp16:1;
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 /* NOTE: These last three fields need to remain last and in this order. */
424 unsigned int cpu64:1;
425 unsigned int cpuno64:1;
427 unsigned int unused:(CpuNumOfBits - CpuUnused);
430 unsigned int array[CpuNumOfUints];
433 /* Position of opcode_modifier bits. */
437 /* has direction bit. */
439 /* set if operands can be both bytes and words/dwords/qwords, encoded the
440 canonical way; the base_opcode field should hold the encoding for byte
443 /* load form instruction. Must be placed before store form. */
445 /* insn has a modrm byte. */
447 /* special case for jump insns; value has to be 1 */
453 /* special case for intersegment leaps/calls */
454 #define JUMP_INTERSEGMENT 4
455 /* absolute address for jump */
456 #define JUMP_ABSOLUTE 5
458 /* FP insn memory format bit, sized by 0x4 */
460 /* src/dest swap for floats. */
462 /* needs size prefix if in 32-bit mode */
464 /* needs size prefix if in 16-bit mode */
466 /* needs size prefix if in 64-bit mode */
469 /* check register size. */
471 /* Instrucion requires that destination must be distinct from source
474 /* instruction ignores operand size prefix and in Intel mode ignores
475 mnemonic size suffix check. */
477 /* default insn size depends on mode */
478 #define DEFAULTSIZE 2
480 /* any memory size */
482 /* b suffix on instruction illegal */
484 /* w suffix on instruction illegal */
486 /* l suffix on instruction illegal */
488 /* s suffix on instruction illegal */
490 /* q suffix on instruction illegal */
492 /* long double suffix on instruction illegal */
494 /* instruction needs FWAIT */
496 /* IsString provides for a quick test for string instructions, and
497 its actual value also indicates which of the operands (if any)
498 requires use of the %es segment. */
499 #define IS_STRING_ES_OP0 2
500 #define IS_STRING_ES_OP1 3
502 /* RegMem is for instructions with a modrm byte where the register
503 destination operand should be encoded in the mod and regmem fields.
504 Normally, it will be encoded in the reg field. We add a RegMem
505 flag to indicate that it should be encoded in the regmem field. */
507 /* quick test if branch instruction is MPX supported */
509 /* fake an extra reg operand for clr, imul and special register
510 processing for some instructions. */
512 /* An implicit xmm0 as the first operand */
516 #define PrefixHLERelease 2 /* Okay with an XRELEASE (0xf3) prefix. */
517 #define PrefixNoTrack 3
518 /* Prefixes implying "LOCK okay" must come after Lock. All others have
521 #define PrefixHLELock 5 /* Okay with a LOCK prefix. */
522 #define PrefixHLEAny 6 /* Okay with or without a LOCK prefix. */
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 /* insn has VEX prefix:
535 1: 128bit VEX prefix (or operand dependent).
536 2: 256bit VEX prefix.
537 3: Scalar VEX prefix.
543 /* How to encode VEX.vvvv:
544 0: VEX.vvvv must be 1111b.
545 1: VEX.NDS. Register-only source is encoded in VEX.vvvv where
546 the content of source registers will be preserved.
547 VEX.DDS. The second register operand is encoded in VEX.vvvv
548 where the content of first source register will be overwritten
550 VEX.NDD2. The second destination register operand is encoded in
551 VEX.vvvv for instructions with 2 destination register operands.
552 For assembler, there are no difference between VEX.NDS, VEX.DDS
554 2. VEX.NDD. Register destination is encoded in VEX.vvvv for
555 instructions with 1 destination register operand.
556 3. VEX.LWP. Register destination is encoded in VEX.vvvv and one
557 of the operands can access a memory location.
563 /* How the VEX.W bit is used:
564 0: Set by the REX.W bit.
565 1: VEX.W0. Should always be 0.
566 2: VEX.W1. Should always be 1.
567 3: VEX.WIG. The VEX.W bit is ignored.
573 /* Opcode encoding space (values chosen to be usable directly in
574 VEX/XOP mmmmm and EVEX mm fields):
575 0: Base opcode space.
576 1: 0F opcode prefix / space.
577 2: 0F38 opcode prefix / space.
578 3: 0F3A opcode prefix / space.
579 5: EVEXMAP5 opcode prefix / space.
580 6: EVEXMAP6 opcode prefix / space.
581 8: XOP 08 opcode space.
582 9: XOP 09 opcode space.
583 A: XOP 0A opcode space.
589 #define SPACE_EVEXMAP5 5
590 #define SPACE_EVEXMAP6 6
591 #define SPACE_XOP08 8
592 #define SPACE_XOP09 9
593 #define SPACE_XOP0A 0xA
595 /* Opcode prefix (values chosen to be usable directly in
596 VEX/XOP/EVEX pp fields):
598 1: Add 0x66 opcode prefix.
599 2: Add 0xf3 opcode prefix.
600 3: Add 0xf2 opcode prefix.
602 #define PREFIX_NONE 0
603 #define PREFIX_0X66 1
604 #define PREFIX_0XF3 2
605 #define PREFIX_0XF2 3
607 /* number of VEX source operands:
608 0: <= 2 source operands.
609 1: 2 XOP source operands.
610 2: 3 source operands.
612 #define XOP2SOURCES 1
613 #define VEX3SOURCES 2
615 /* Instruction with a mandatory SIB byte:
616 1: 128bit vector register.
617 2: 256bit vector register.
618 3: 512bit vector register.
626 /* SSE to AVX support required */
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 distinctdest:1;
722 unsigned int mnemonicsize:2;
723 unsigned int anysize:1;
724 unsigned int no_bsuf:1;
725 unsigned int no_wsuf:1;
726 unsigned int no_lsuf:1;
727 unsigned int no_ssuf:1;
728 unsigned int no_qsuf:1;
729 unsigned int no_ldsuf:1;
730 unsigned int fwait:1;
731 unsigned int isstring:2;
732 unsigned int regmem:1;
733 unsigned int bndprefixok:1;
734 unsigned int regkludge:1;
735 unsigned int implicit1stxmm0:1;
736 unsigned int prefixok:3;
737 unsigned int addrprefixopreg:1;
738 unsigned int isprefix:1;
739 unsigned int immext:1;
740 unsigned int norex64:1;
743 unsigned int vexvvvv:2;
745 unsigned int opcodespace:4;
746 unsigned int opcodeprefix:2;
747 unsigned int vexsources:2;
749 unsigned int sse2avx:1;
751 unsigned int masking:2;
752 unsigned int broadcast:3;
753 unsigned int staticrounding:1;
755 unsigned int disp8memshift:3;
756 unsigned int nodefmask:1;
757 unsigned int implicitquadgroup:1;
758 unsigned int swapsources:1;
759 unsigned int optimize:1;
760 unsigned int attmnemonic:1;
761 unsigned int attsyntax:1;
762 unsigned int intelsyntax:1;
763 unsigned int isa64:2;
764 } i386_opcode_modifier;
766 /* Operand classes. */
768 #define CLASS_WIDTH 4
772 Reg, /* GPRs and FP regs, distinguished by operand size */
773 SReg, /* Segment register */
774 RegCR, /* Control register */
775 RegDR, /* Debug register */
776 RegTR, /* Test register */
777 RegMMX, /* MMX register */
778 RegSIMD, /* XMM/YMM/ZMM registers, distinguished by operand size */
779 RegMask, /* Vector Mask register */
780 RegBND, /* Bound register */
783 /* Special operand instances. */
785 #define INSTANCE_WIDTH 3
786 enum operand_instance
789 Accum, /* Accumulator %al/%ax/%eax/%rax/%st(0)/%xmm0 */
790 RegC, /* %cl / %cx / %ecx / %rcx, e.g. register to hold shift count */
791 RegD, /* %dl / %dx / %edx / %rdx, e.g. register to hold I/O port addr */
792 RegB, /* %bl / %bx / %ebx / %rbx */
795 /* Position of operand_type bits. */
799 /* Class and Instance */
800 ClassInstance = CLASS_WIDTH + INSTANCE_WIDTH - 1,
801 /* 1 bit immediate */
803 /* 8 bit immediate */
805 /* 8 bit immediate sign extended */
807 /* 16 bit immediate */
809 /* 32 bit immediate */
811 /* 32 bit immediate sign extended */
813 /* 64 bit immediate */
815 /* 8bit/16bit/32bit displacements are used in different ways,
816 depending on the instruction. For jumps, they specify the
817 size of the PC relative displacement, for instructions with
818 memory operand, they specify the size of the offset relative
819 to the base register, and for instructions with memory offset
820 such as `mov 1234,%al' they specify the size of the offset
821 relative to the segment base. */
822 /* 8 bit displacement */
824 /* 16 bit displacement */
826 /* 32 bit displacement (64-bit: sign-extended) */
828 /* 64 bit displacement */
830 /* Register which can be used for base or index in memory operand. */
834 /* WORD size. 2 byte */
836 /* DWORD size. 4 byte */
838 /* FWORD size. 6 byte */
840 /* QWORD size. 8 byte */
842 /* TBYTE size. 10 byte */
852 /* Unspecified memory size. */
855 /* The number of bits in i386_operand_type. */
859 #define OTNumOfUints \
860 ((OTNum - 1) / sizeof (unsigned int) / CHAR_BIT + 1)
861 #define OTNumOfBits \
862 (OTNumOfUints * sizeof (unsigned int) * CHAR_BIT)
864 /* If you get a compiler error for zero width of the unused field,
866 #define OTUnused OTNum
868 typedef union i386_operand_type
872 unsigned int class:CLASS_WIDTH;
873 unsigned int instance:INSTANCE_WIDTH;
876 unsigned int imm8s:1;
877 unsigned int imm16:1;
878 unsigned int imm32:1;
879 unsigned int imm32s:1;
880 unsigned int imm64:1;
881 unsigned int disp8:1;
882 unsigned int disp16:1;
883 unsigned int disp32:1;
884 unsigned int disp64:1;
885 unsigned int baseindex:1;
888 unsigned int dword:1;
889 unsigned int fword:1;
890 unsigned int qword:1;
891 unsigned int tbyte:1;
892 unsigned int xmmword:1;
893 unsigned int ymmword:1;
894 unsigned int zmmword:1;
895 unsigned int tmmword:1;
896 unsigned int unspecified:1;
898 unsigned int unused:(OTNumOfBits - OTUnused);
901 unsigned int array[OTNumOfUints];
904 typedef struct insn_template
906 /* instruction name sans width suffix ("mov" for movl insns) */
909 /* Bitfield arrangement is such that individual fields can be easily
910 extracted (in native builds at least) - either by at most a masking
911 operation (base_opcode, operands), or by just a (signed) right shift
912 (extension_opcode). Please try to maintain this property. */
914 /* base_opcode is the fundamental opcode byte without optional
916 unsigned int base_opcode:16;
917 #define Opcode_D 0x2 /* Direction bit:
918 set if Reg --> Regmem;
919 unset if Regmem --> Reg. */
920 #define Opcode_FloatR 0x8 /* Bit to swap src/dest for float insns. */
921 #define Opcode_FloatD 0x400 /* Direction bit for float insns. */
922 #define Opcode_ExtD 0x1 /* Direction bit for extended opcode space insns. */
923 #define Opcode_SIMD_IntD 0x10 /* Direction bit for SIMD int insns. */
924 /* The next value is arbitrary, as long as it's non-zero and distinct
925 from all other values above. */
926 #define Opcode_VexW 0xf /* Operand order controlled by VEX.W. */
928 /* how many operands */
929 unsigned int operands:3;
934 /* (Fake) base opcode value for pseudo prefixes. */
935 #define PSEUDO_PREFIX 0
937 /* extension_opcode is the 3 bit extension for group <n> insns.
938 This field is also used to store the 8-bit opcode suffix for the
939 AMD 3DNow! instructions.
940 If this template has no extension opcode (the usual case) use None
942 signed int extension_opcode:9;
943 #define None (-1) /* If no extension_opcode is possible. */
945 /* Pseudo prefixes. */
946 #define Prefix_Disp8 0 /* {disp8} */
947 #define Prefix_Disp16 1 /* {disp16} */
948 #define Prefix_Disp32 2 /* {disp32} */
949 #define Prefix_Load 3 /* {load} */
950 #define Prefix_Store 4 /* {store} */
951 #define Prefix_VEX 5 /* {vex} */
952 #define Prefix_VEX3 6 /* {vex3} */
953 #define Prefix_EVEX 7 /* {evex} */
954 #define Prefix_REX 8 /* {rex} */
955 #define Prefix_NoOptimize 9 /* {nooptimize} */
957 /* the bits in opcode_modifier are used to generate the final opcode from
958 the base_opcode. These bits also are used to detect alternate forms of
959 the same instruction */
960 i386_opcode_modifier opcode_modifier;
962 /* cpu feature flags */
963 i386_cpu_flags cpu_flags;
965 /* operand_types[i] describes the type of operand i. This is made
966 by OR'ing together all of the possible type masks. (e.g.
967 'operand_types[i] = Reg|Imm' specifies that operand i can be
968 either a register or an immediate operand. */
969 i386_operand_type operand_types[MAX_OPERANDS];
973 extern const insn_template i386_optab[];
975 /* these are for register name --> number & type hash lookup */
978 const char *reg_name;
979 i386_operand_type reg_type;
980 unsigned char reg_flags;
981 #define RegRex 0x1 /* Extended register. */
982 #define RegRex64 0x2 /* Extended 8 bit register. */
983 #define RegVRex 0x4 /* Extended vector register. */
984 unsigned char reg_num;
985 #define RegIP ((unsigned char ) ~0)
986 /* EIZ and RIZ are fake index registers. */
987 #define RegIZ (RegIP - 1)
988 /* FLAT is a fake segment register (Intel mode). */
989 #define RegFlat ((unsigned char) ~0)
990 signed char dw2_regnum[2];
991 #define Dw2Inval (-1)
995 extern const reg_entry i386_regtab[];
996 extern const unsigned int i386_regtab_size;
997 extern const unsigned char i386_seg_prefixes[6];