1 /* Declarations for Intel 80386 opcode table
2 Copyright (C) 2007-2015 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"
30 /* Position of cpu flags bitfiled. */
34 /* i186 or better required */
36 /* i286 or better required */
38 /* i386 or better required */
40 /* i486 or better required */
42 /* i585 or better required */
44 /* i686 or better required */
46 /* CLFLUSH Instruction support required */
48 /* NOP Instruction support required */
50 /* SYSCALL Instructions support required */
52 /* Floating point support required */
54 /* i287 support required */
56 /* i387 support required */
58 /* i686 and floating point support required */
60 /* SSE3 and floating point support required */
62 /* MMX support required */
64 /* SSE support required */
66 /* SSE2 support required */
68 /* 3dnow! support required */
70 /* 3dnow! Extensions support required */
72 /* SSE3 support required */
74 /* VIA PadLock required */
76 /* AMD Secure Virtual Machine Ext-s required */
78 /* VMX Instructions required */
80 /* SMX Instructions required */
82 /* SSSE3 support required */
84 /* SSE4a support required */
86 /* ABM New Instructions required */
88 /* SSE4.1 support required */
90 /* SSE4.2 support required */
92 /* AVX support required */
94 /* AVX2 support required */
96 /* Intel AVX-512 Foundation Instructions support required */
98 /* Intel AVX-512 Conflict Detection Instructions support required */
100 /* Intel AVX-512 Exponential and Reciprocal Instructions support
103 /* Intel AVX-512 Prefetch Instructions support required */
105 /* Intel AVX-512 VL Instructions support required. */
107 /* Intel AVX-512 DQ Instructions support required. */
109 /* Intel AVX-512 BW Instructions support required. */
111 /* Intel L1OM support required */
113 /* Intel K1OM support required */
115 /* Xsave/xrstor New Instructions support required */
117 /* Xsaveopt New Instructions support required */
119 /* AES support required */
121 /* PCLMUL support required */
123 /* FMA support required */
125 /* FMA4 support required */
127 /* XOP support required */
129 /* LWP support required */
131 /* BMI support required */
133 /* TBM support required */
135 /* MOVBE Instruction support required */
137 /* CMPXCHG16B instruction support required. */
139 /* EPT Instructions required */
141 /* RDTSCP Instruction support required */
143 /* FSGSBASE Instructions required */
145 /* RDRND Instructions required */
147 /* F16C Instructions required */
149 /* Intel BMI2 support required */
151 /* LZCNT support required */
153 /* HLE support required */
155 /* RTM support required */
157 /* INVPCID Instructions required */
159 /* VMFUNC Instruction required */
161 /* Intel MPX Instructions required */
163 /* 64bit support available, used by -march= in assembler. */
165 /* RDRSEED instruction required. */
167 /* Multi-presisionn add-carry instructions are required. */
169 /* Supports prefetchw and prefetch instructions. */
171 /* SMAP instructions required. */
173 /* SHA instructions required. */
175 /* VREX support required */
177 /* CLFLUSHOPT instruction required */
179 /* XSAVES/XRSTORS instruction required */
181 /* XSAVEC instruction required */
183 /* PREFETCHWT1 instruction required */
185 /* SE1 instruction required */
187 /* CLWB instruction required */
189 /* PCOMMIT instruction required */
191 /* Intel AVX-512 IFMA Instructions support required. */
193 /* Intel AVX-512 VBMI Instructions support required. */
195 /* Clzero instruction required */
197 /* 64bit support required */
199 /* Not supported in the 64bit mode */
201 /* The last bitfield in i386_cpu_flags. */
205 #define CpuNumOfUints \
206 (CpuMax / sizeof (unsigned int) / CHAR_BIT + 1)
207 #define CpuNumOfBits \
208 (CpuNumOfUints * sizeof (unsigned int) * CHAR_BIT)
210 /* If you get a compiler error for zero width of the unused field,
212 #define CpuUnused (CpuMax + 1)
214 /* We can check if an instruction is available with array instead
216 typedef union i386_cpu_flags
220 unsigned int cpui186
:1;
221 unsigned int cpui286
:1;
222 unsigned int cpui386
:1;
223 unsigned int cpui486
:1;
224 unsigned int cpui586
:1;
225 unsigned int cpui686
:1;
226 unsigned int cpuclflush
:1;
227 unsigned int cpunop
:1;
228 unsigned int cpusyscall
:1;
229 unsigned int cpu8087
:1;
230 unsigned int cpu287
:1;
231 unsigned int cpu387
:1;
232 unsigned int cpu687
:1;
233 unsigned int cpufisttp
:1;
234 unsigned int cpummx
:1;
235 unsigned int cpusse
:1;
236 unsigned int cpusse2
:1;
237 unsigned int cpua3dnow
:1;
238 unsigned int cpua3dnowa
:1;
239 unsigned int cpusse3
:1;
240 unsigned int cpupadlock
:1;
241 unsigned int cpusvme
:1;
242 unsigned int cpuvmx
:1;
243 unsigned int cpusmx
:1;
244 unsigned int cpussse3
:1;
245 unsigned int cpusse4a
:1;
246 unsigned int cpuabm
:1;
247 unsigned int cpusse4_1
:1;
248 unsigned int cpusse4_2
:1;
249 unsigned int cpuavx
:1;
250 unsigned int cpuavx2
:1;
251 unsigned int cpuavx512f
:1;
252 unsigned int cpuavx512cd
:1;
253 unsigned int cpuavx512er
:1;
254 unsigned int cpuavx512pf
:1;
255 unsigned int cpuavx512vl
:1;
256 unsigned int cpuavx512dq
:1;
257 unsigned int cpuavx512bw
:1;
258 unsigned int cpul1om
:1;
259 unsigned int cpuk1om
:1;
260 unsigned int cpuxsave
:1;
261 unsigned int cpuxsaveopt
:1;
262 unsigned int cpuaes
:1;
263 unsigned int cpupclmul
:1;
264 unsigned int cpufma
:1;
265 unsigned int cpufma4
:1;
266 unsigned int cpuxop
:1;
267 unsigned int cpulwp
:1;
268 unsigned int cpubmi
:1;
269 unsigned int cputbm
:1;
270 unsigned int cpumovbe
:1;
271 unsigned int cpucx16
:1;
272 unsigned int cpuept
:1;
273 unsigned int cpurdtscp
:1;
274 unsigned int cpufsgsbase
:1;
275 unsigned int cpurdrnd
:1;
276 unsigned int cpuf16c
:1;
277 unsigned int cpubmi2
:1;
278 unsigned int cpulzcnt
:1;
279 unsigned int cpuhle
:1;
280 unsigned int cpurtm
:1;
281 unsigned int cpuinvpcid
:1;
282 unsigned int cpuvmfunc
:1;
283 unsigned int cpumpx
:1;
284 unsigned int cpulm
:1;
285 unsigned int cpurdseed
:1;
286 unsigned int cpuadx
:1;
287 unsigned int cpuprfchw
:1;
288 unsigned int cpusmap
:1;
289 unsigned int cpusha
:1;
290 unsigned int cpuvrex
:1;
291 unsigned int cpuclflushopt
:1;
292 unsigned int cpuxsaves
:1;
293 unsigned int cpuxsavec
:1;
294 unsigned int cpuprefetchwt1
:1;
295 unsigned int cpuse1
:1;
296 unsigned int cpuclwb
:1;
297 unsigned int cpupcommit
:1;
298 unsigned int cpuavx512ifma
:1;
299 unsigned int cpuavx512vbmi
:1;
300 unsigned int cpuclzero
:1;
301 unsigned int cpu64
:1;
302 unsigned int cpuno64
:1;
304 unsigned int unused
:(CpuNumOfBits
- CpuUnused
);
307 unsigned int array
[CpuNumOfUints
];
310 /* Position of opcode_modifier bits. */
314 /* has direction bit. */
316 /* set if operands can be words or dwords encoded the canonical way */
318 /* Skip the current insn and use the next insn in i386-opc.tbl to swap
319 operand in encoding. */
321 /* insn has a modrm byte. */
323 /* register is in low 3 bits of opcode */
325 /* special case for jump insns. */
331 /* special case for intersegment leaps/calls */
333 /* FP insn memory format bit, sized by 0x4 */
335 /* src/dest swap for floats. */
337 /* has float insn direction bit. */
339 /* needs size prefix if in 32-bit mode */
341 /* needs size prefix if in 16-bit mode */
343 /* needs size prefix if in 64-bit mode */
345 /* check register size. */
347 /* instruction ignores operand size prefix and in Intel mode ignores
348 mnemonic size suffix check. */
350 /* default insn size depends on mode */
352 /* b suffix on instruction illegal */
354 /* w suffix on instruction illegal */
356 /* l suffix on instruction illegal */
358 /* s suffix on instruction illegal */
360 /* q suffix on instruction illegal */
362 /* long double suffix on instruction illegal */
364 /* instruction needs FWAIT */
366 /* quick test for string instructions */
368 /* quick test if branch instruction is MPX supported */
370 /* quick test for lockable instructions */
372 /* fake an extra reg operand for clr, imul and special register
373 processing for some instructions. */
375 /* The first operand must be xmm0 */
377 /* An implicit xmm0 as the first operand */
379 /* The HLE prefix is OK:
380 1. With a LOCK prefix.
381 2. With or without a LOCK prefix.
382 3. With a RELEASE (0xf3) prefix.
384 #define HLEPrefixNone 0
385 #define HLEPrefixLock 1
386 #define HLEPrefixAny 2
387 #define HLEPrefixRelease 3
389 /* An instruction on which a "rep" prefix is acceptable. */
391 /* Convert to DWORD */
393 /* Convert to QWORD */
395 /* Address prefix changes operand 0 */
397 /* opcode is a prefix */
399 /* instruction has extension in 8 bit imm */
401 /* instruction don't need Rex64 prefix. */
403 /* instruction require Rex64 prefix. */
405 /* deprecated fp insn, gets a warning */
407 /* insn has VEX prefix:
408 1: 128bit VEX prefix.
409 2: 256bit VEX prefix.
410 3: Scalar VEX prefix.
416 /* How to encode VEX.vvvv:
417 0: VEX.vvvv must be 1111b.
418 1: VEX.NDS. Register-only source is encoded in VEX.vvvv where
419 the content of source registers will be preserved.
420 VEX.DDS. The second register operand is encoded in VEX.vvvv
421 where the content of first source register will be overwritten
423 VEX.NDD2. The second destination register operand is encoded in
424 VEX.vvvv for instructions with 2 destination register operands.
425 For assembler, there are no difference between VEX.NDS, VEX.DDS
427 2. VEX.NDD. Register destination is encoded in VEX.vvvv for
428 instructions with 1 destination register operand.
429 3. VEX.LWP. Register destination is encoded in VEX.vvvv and one
430 of the operands can access a memory location.
436 /* How the VEX.W bit is used:
437 0: Set by the REX.W bit.
438 1: VEX.W0. Should always be 0.
439 2: VEX.W1. Should always be 1.
444 /* VEX opcode prefix:
445 0: VEX 0x0F opcode prefix.
446 1: VEX 0x0F38 opcode prefix.
447 2: VEX 0x0F3A opcode prefix
448 3: XOP 0x08 opcode prefix.
449 4: XOP 0x09 opcode prefix
450 5: XOP 0x0A opcode prefix.
459 /* number of VEX source operands:
460 0: <= 2 source operands.
461 1: 2 XOP source operands.
462 2: 3 source operands.
464 #define XOP2SOURCES 1
465 #define VEX3SOURCES 2
467 /* instruction has VEX 8 bit imm */
469 /* Instruction with vector SIB byte:
470 1: 128bit vector register.
471 2: 256bit vector register.
472 3: 512bit vector register.
478 /* SSE to AVX support required */
480 /* No AVX equivalent */
483 /* insn has EVEX prefix:
484 1: 512bit EVEX prefix.
485 2: 128bit EVEX prefix.
486 3: 256bit EVEX prefix.
487 4: Length-ignored (LIG) EVEX prefix.
495 /* AVX512 masking support:
498 3: Both zeroing and merging masking.
500 #define ZEROING_MASKING 1
501 #define MERGING_MASKING 2
502 #define BOTH_MASKING 3
505 /* Input element size of vector insn:
516 #define NO_BROADCAST 0
517 #define BROADCAST_1TO16 1
518 #define BROADCAST_1TO8 2
519 #define BROADCAST_1TO4 3
520 #define BROADCAST_1TO2 4
523 /* Static rounding control is supported. */
526 /* Supress All Exceptions is supported. */
529 /* Copressed Disp8*N attribute. */
532 /* Default mask isn't allowed. */
535 /* Compatible with old (<= 2.8.1) versions of gcc */
543 /* The last bitfield in i386_opcode_modifier. */
547 typedef struct i386_opcode_modifier
552 unsigned int modrm
:1;
553 unsigned int shortform
:1;
555 unsigned int jumpdword
:1;
556 unsigned int jumpbyte
:1;
557 unsigned int jumpintersegment
:1;
558 unsigned int floatmf
:1;
559 unsigned int floatr
:1;
560 unsigned int floatd
:1;
561 unsigned int size16
:1;
562 unsigned int size32
:1;
563 unsigned int size64
:1;
564 unsigned int checkregsize
:1;
565 unsigned int ignoresize
:1;
566 unsigned int defaultsize
:1;
567 unsigned int no_bsuf
:1;
568 unsigned int no_wsuf
:1;
569 unsigned int no_lsuf
:1;
570 unsigned int no_ssuf
:1;
571 unsigned int no_qsuf
:1;
572 unsigned int no_ldsuf
:1;
573 unsigned int fwait
:1;
574 unsigned int isstring
:1;
575 unsigned int bndprefixok
:1;
576 unsigned int islockable
:1;
577 unsigned int regkludge
:1;
578 unsigned int firstxmm0
:1;
579 unsigned int implicit1stxmm0
:1;
580 unsigned int hleprefixok
:2;
581 unsigned int repprefixok
:1;
582 unsigned int todword
:1;
583 unsigned int toqword
:1;
584 unsigned int addrprefixop0
:1;
585 unsigned int isprefix
:1;
586 unsigned int immext
:1;
587 unsigned int norex64
:1;
588 unsigned int rex64
:1;
591 unsigned int vexvvvv
:2;
593 unsigned int vexopcode
:3;
594 unsigned int vexsources
:2;
595 unsigned int veximmext
:1;
596 unsigned int vecsib
:2;
597 unsigned int sse2avx
:1;
598 unsigned int noavx
:1;
600 unsigned int masking
:2;
601 unsigned int vecesize
:1;
602 unsigned int broadcast
:3;
603 unsigned int staticrounding
:1;
605 unsigned int disp8memshift
:3;
606 unsigned int nodefmask
:1;
607 unsigned int oldgcc
:1;
608 unsigned int attmnemonic
:1;
609 unsigned int attsyntax
:1;
610 unsigned int intelsyntax
:1;
611 } i386_opcode_modifier
;
613 /* Position of operand_type bits. */
625 /* Floating pointer stack register */
633 /* AVX512 registers */
635 /* Vector Mask registers */
637 /* Control register */
643 /* 2 bit segment register */
645 /* 3 bit segment register */
647 /* 1 bit immediate */
649 /* 8 bit immediate */
651 /* 8 bit immediate sign extended */
653 /* 16 bit immediate */
655 /* 32 bit immediate */
657 /* 32 bit immediate sign extended */
659 /* 64 bit immediate */
661 /* 8bit/16bit/32bit displacements are used in different ways,
662 depending on the instruction. For jumps, they specify the
663 size of the PC relative displacement, for instructions with
664 memory operand, they specify the size of the offset relative
665 to the base register, and for instructions with memory offset
666 such as `mov 1234,%al' they specify the size of the offset
667 relative to the segment base. */
668 /* 8 bit displacement */
670 /* 16 bit displacement */
672 /* 32 bit displacement */
674 /* 32 bit signed displacement */
676 /* 64 bit displacement */
678 /* Accumulator %al/%ax/%eax/%rax */
680 /* Floating pointer top stack register %st(0) */
682 /* Register which can be used for base or index in memory operand. */
684 /* Register to hold in/out port addr = dx */
686 /* Register to hold shift count = cl */
688 /* Absolute address for jump. */
690 /* String insn operand with fixed es segment */
692 /* RegMem is for instructions with a modrm byte where the register
693 destination operand should be encoded in the mod and regmem fields.
694 Normally, it will be encoded in the reg field. We add a RegMem
695 flag to the destination register operand to indicate that it should
696 be encoded in the regmem field. */
702 /* WORD memory. 2 byte */
704 /* DWORD memory. 4 byte */
706 /* FWORD memory. 6 byte */
708 /* QWORD memory. 8 byte */
710 /* TBYTE memory. 10 byte */
712 /* XMMWORD memory. */
714 /* YMMWORD memory. */
716 /* ZMMWORD memory. */
718 /* Unspecified memory size. */
720 /* Any memory size. */
723 /* Vector 4 bit immediate. */
726 /* Bound register. */
729 /* Vector 8bit displacement */
732 /* The last bitfield in i386_operand_type. */
736 #define OTNumOfUints \
737 (OTMax / sizeof (unsigned int) / CHAR_BIT + 1)
738 #define OTNumOfBits \
739 (OTNumOfUints * sizeof (unsigned int) * CHAR_BIT)
741 /* If you get a compiler error for zero width of the unused field,
743 #define OTUnused (OTMax + 1)
745 typedef union i386_operand_type
750 unsigned int reg16
:1;
751 unsigned int reg32
:1;
752 unsigned int reg64
:1;
753 unsigned int floatreg
:1;
754 unsigned int regmmx
:1;
755 unsigned int regxmm
:1;
756 unsigned int regymm
:1;
757 unsigned int regzmm
:1;
758 unsigned int regmask
:1;
759 unsigned int control
:1;
760 unsigned int debug
:1;
762 unsigned int sreg2
:1;
763 unsigned int sreg3
:1;
766 unsigned int imm8s
:1;
767 unsigned int imm16
:1;
768 unsigned int imm32
:1;
769 unsigned int imm32s
:1;
770 unsigned int imm64
:1;
771 unsigned int disp8
:1;
772 unsigned int disp16
:1;
773 unsigned int disp32
:1;
774 unsigned int disp32s
:1;
775 unsigned int disp64
:1;
777 unsigned int floatacc
:1;
778 unsigned int baseindex
:1;
779 unsigned int inoutportreg
:1;
780 unsigned int shiftcount
:1;
781 unsigned int jumpabsolute
:1;
782 unsigned int esseg
:1;
783 unsigned int regmem
:1;
787 unsigned int dword
:1;
788 unsigned int fword
:1;
789 unsigned int qword
:1;
790 unsigned int tbyte
:1;
791 unsigned int xmmword
:1;
792 unsigned int ymmword
:1;
793 unsigned int zmmword
:1;
794 unsigned int unspecified
:1;
795 unsigned int anysize
:1;
796 unsigned int vec_imm4
:1;
797 unsigned int regbnd
:1;
798 unsigned int vec_disp8
:1;
800 unsigned int unused
:(OTNumOfBits
- OTUnused
);
803 unsigned int array
[OTNumOfUints
];
806 typedef struct insn_template
808 /* instruction name sans width suffix ("mov" for movl insns) */
811 /* how many operands */
812 unsigned int operands
;
814 /* base_opcode is the fundamental opcode byte without optional
816 unsigned int base_opcode
;
817 #define Opcode_D 0x2 /* Direction bit:
818 set if Reg --> Regmem;
819 unset if Regmem --> Reg. */
820 #define Opcode_FloatR 0x8 /* Bit to swap src/dest for float insns. */
821 #define Opcode_FloatD 0x400 /* Direction bit for float insns. */
823 /* extension_opcode is the 3 bit extension for group <n> insns.
824 This field is also used to store the 8-bit opcode suffix for the
825 AMD 3DNow! instructions.
826 If this template has no extension opcode (the usual case) use None
828 unsigned int extension_opcode
;
829 #define None 0xffff /* If no extension_opcode is possible. */
832 unsigned char opcode_length
;
834 /* cpu feature flags */
835 i386_cpu_flags cpu_flags
;
837 /* the bits in opcode_modifier are used to generate the final opcode from
838 the base_opcode. These bits also are used to detect alternate forms of
839 the same instruction */
840 i386_opcode_modifier opcode_modifier
;
842 /* operand_types[i] describes the type of operand i. This is made
843 by OR'ing together all of the possible type masks. (e.g.
844 'operand_types[i] = Reg|Imm' specifies that operand i can be
845 either a register or an immediate operand. */
846 i386_operand_type operand_types
[MAX_OPERANDS
];
850 extern const insn_template i386_optab
[];
852 /* these are for register name --> number & type hash lookup */
856 i386_operand_type reg_type
;
857 unsigned char reg_flags
;
858 #define RegRex 0x1 /* Extended register. */
859 #define RegRex64 0x2 /* Extended 8 bit register. */
860 #define RegVRex 0x4 /* Extended vector register. */
861 unsigned char reg_num
;
862 #define RegRip ((unsigned char ) ~0)
863 #define RegEip (RegRip - 1)
864 /* EIZ and RIZ are fake index registers. */
865 #define RegEiz (RegEip - 1)
866 #define RegRiz (RegEiz - 1)
867 /* FLAT is a fake segment register (Intel mode). */
868 #define RegFlat ((unsigned char) ~0)
869 signed char dw2_regnum
[2];
870 #define Dw2Inval (-1)
874 /* Entries in i386_regtab. */
877 #define REGNAM_EAX 41
879 extern const reg_entry i386_regtab
[];
880 extern const unsigned int i386_regtab_size
;
885 unsigned int seg_prefix
;
889 extern const seg_entry cs
;
890 extern const seg_entry ds
;
891 extern const seg_entry ss
;
892 extern const seg_entry es
;
893 extern const seg_entry fs
;
894 extern const seg_entry gs
;