1 /* Declarations for Intel 80386 opcode table
2 Copyright (C) 2007-2016 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 /* Intel IAMCU support required */
117 /* Xsave/xrstor New Instructions support required */
119 /* Xsaveopt New Instructions support required */
121 /* AES support required */
123 /* PCLMUL support required */
125 /* FMA support required */
127 /* FMA4 support required */
129 /* XOP support required */
131 /* LWP support required */
133 /* BMI support required */
135 /* TBM support required */
137 /* MOVBE Instruction support required */
139 /* CMPXCHG16B instruction support required. */
141 /* EPT Instructions required */
143 /* RDTSCP Instruction support required */
145 /* FSGSBASE Instructions required */
147 /* RDRND Instructions required */
149 /* F16C Instructions required */
151 /* Intel BMI2 support required */
153 /* LZCNT support required */
155 /* HLE support required */
157 /* RTM support required */
159 /* INVPCID Instructions required */
161 /* VMFUNC Instruction required */
163 /* Intel MPX Instructions required */
165 /* 64bit support available, used by -march= in assembler. */
167 /* RDRSEED instruction required. */
169 /* Multi-presisionn add-carry instructions are required. */
171 /* Supports prefetchw and prefetch instructions. */
173 /* SMAP instructions required. */
175 /* SHA instructions required. */
177 /* VREX support required */
179 /* CLFLUSHOPT instruction required */
181 /* XSAVES/XRSTORS instruction required */
183 /* XSAVEC instruction required */
185 /* PREFETCHWT1 instruction required */
187 /* SE1 instruction required */
189 /* CLWB instruction required */
191 /* PCOMMIT instruction required */
193 /* Intel AVX-512 IFMA Instructions support required. */
195 /* Intel AVX-512 VBMI Instructions support required. */
197 /* mwaitx instruction required */
199 /* Clzero instruction required */
201 /* OSPKE instruction required */
203 /* RDPID instruction required */
205 /* MMX register support required */
207 /* XMM register support required */
209 /* YMM register support required */
211 /* ZMM register support required */
213 /* Mask register support required */
215 /* 64bit support required */
217 /* Not supported in the 64bit mode */
219 /* The last bitfield in i386_cpu_flags. */
223 #define CpuNumOfUints \
224 (CpuMax / sizeof (unsigned int) / CHAR_BIT + 1)
225 #define CpuNumOfBits \
226 (CpuNumOfUints * sizeof (unsigned int) * CHAR_BIT)
228 /* If you get a compiler error for zero width of the unused field,
230 #define CpuUnused (CpuMax + 1)
232 /* We can check if an instruction is available with array instead
234 typedef union i386_cpu_flags
238 unsigned int cpui186:1;
239 unsigned int cpui286:1;
240 unsigned int cpui386:1;
241 unsigned int cpui486:1;
242 unsigned int cpui586:1;
243 unsigned int cpui686:1;
244 unsigned int cpuclflush:1;
245 unsigned int cpunop:1;
246 unsigned int cpusyscall:1;
247 unsigned int cpu8087:1;
248 unsigned int cpu287:1;
249 unsigned int cpu387:1;
250 unsigned int cpu687:1;
251 unsigned int cpufisttp:1;
252 unsigned int cpummx:1;
253 unsigned int cpusse:1;
254 unsigned int cpusse2:1;
255 unsigned int cpua3dnow:1;
256 unsigned int cpua3dnowa:1;
257 unsigned int cpusse3:1;
258 unsigned int cpupadlock:1;
259 unsigned int cpusvme:1;
260 unsigned int cpuvmx:1;
261 unsigned int cpusmx:1;
262 unsigned int cpussse3:1;
263 unsigned int cpusse4a:1;
264 unsigned int cpuabm:1;
265 unsigned int cpusse4_1:1;
266 unsigned int cpusse4_2:1;
267 unsigned int cpuavx:1;
268 unsigned int cpuavx2:1;
269 unsigned int cpuavx512f:1;
270 unsigned int cpuavx512cd:1;
271 unsigned int cpuavx512er:1;
272 unsigned int cpuavx512pf:1;
273 unsigned int cpuavx512vl:1;
274 unsigned int cpuavx512dq:1;
275 unsigned int cpuavx512bw:1;
276 unsigned int cpul1om:1;
277 unsigned int cpuk1om:1;
278 unsigned int cpuiamcu:1;
279 unsigned int cpuxsave:1;
280 unsigned int cpuxsaveopt:1;
281 unsigned int cpuaes:1;
282 unsigned int cpupclmul:1;
283 unsigned int cpufma:1;
284 unsigned int cpufma4:1;
285 unsigned int cpuxop:1;
286 unsigned int cpulwp:1;
287 unsigned int cpubmi:1;
288 unsigned int cputbm:1;
289 unsigned int cpumovbe:1;
290 unsigned int cpucx16:1;
291 unsigned int cpuept:1;
292 unsigned int cpurdtscp:1;
293 unsigned int cpufsgsbase:1;
294 unsigned int cpurdrnd:1;
295 unsigned int cpuf16c:1;
296 unsigned int cpubmi2:1;
297 unsigned int cpulzcnt:1;
298 unsigned int cpuhle:1;
299 unsigned int cpurtm:1;
300 unsigned int cpuinvpcid:1;
301 unsigned int cpuvmfunc:1;
302 unsigned int cpumpx:1;
303 unsigned int cpulm:1;
304 unsigned int cpurdseed:1;
305 unsigned int cpuadx:1;
306 unsigned int cpuprfchw:1;
307 unsigned int cpusmap:1;
308 unsigned int cpusha:1;
309 unsigned int cpuvrex:1;
310 unsigned int cpuclflushopt:1;
311 unsigned int cpuxsaves:1;
312 unsigned int cpuxsavec:1;
313 unsigned int cpuprefetchwt1:1;
314 unsigned int cpuse1:1;
315 unsigned int cpuclwb:1;
316 unsigned int cpupcommit:1;
317 unsigned int cpuavx512ifma:1;
318 unsigned int cpuavx512vbmi:1;
319 unsigned int cpumwaitx:1;
320 unsigned int cpuclzero:1;
321 unsigned int cpuospke:1;
322 unsigned int cpurdpid:1;
323 unsigned int cpuregmmx:1;
324 unsigned int cpuregxmm:1;
325 unsigned int cpuregymm:1;
326 unsigned int cpuregzmm:1;
327 unsigned int cpuregmask:1;
328 unsigned int cpu64:1;
329 unsigned int cpuno64:1;
331 unsigned int unused:(CpuNumOfBits - CpuUnused);
334 unsigned int array[CpuNumOfUints];
337 /* Position of opcode_modifier bits. */
341 /* has direction bit. */
343 /* set if operands can be words or dwords encoded the canonical way */
345 /* Skip the current insn and use the next insn in i386-opc.tbl to swap
346 operand in encoding. */
348 /* insn has a modrm byte. */
350 /* register is in low 3 bits of opcode */
352 /* special case for jump insns. */
358 /* special case for intersegment leaps/calls */
360 /* FP insn memory format bit, sized by 0x4 */
362 /* src/dest swap for floats. */
364 /* has float insn direction bit. */
366 /* needs size prefix if in 32-bit mode */
368 /* needs size prefix if in 16-bit mode */
370 /* needs size prefix if in 64-bit mode */
372 /* check register size. */
374 /* instruction ignores operand size prefix and in Intel mode ignores
375 mnemonic size suffix check. */
377 /* default insn size depends on mode */
379 /* b suffix on instruction illegal */
381 /* w suffix on instruction illegal */
383 /* l suffix on instruction illegal */
385 /* s suffix on instruction illegal */
387 /* q suffix on instruction illegal */
389 /* long double suffix on instruction illegal */
391 /* instruction needs FWAIT */
393 /* quick test for string instructions */
395 /* quick test if branch instruction is MPX supported */
397 /* quick test for lockable instructions */
399 /* fake an extra reg operand for clr, imul and special register
400 processing for some instructions. */
402 /* The first operand must be xmm0 */
404 /* An implicit xmm0 as the first operand */
406 /* The HLE prefix is OK:
407 1. With a LOCK prefix.
408 2. With or without a LOCK prefix.
409 3. With a RELEASE (0xf3) prefix.
411 #define HLEPrefixNone 0
412 #define HLEPrefixLock 1
413 #define HLEPrefixAny 2
414 #define HLEPrefixRelease 3
416 /* An instruction on which a "rep" prefix is acceptable. */
418 /* Convert to DWORD */
420 /* Convert to QWORD */
422 /* Address prefix changes operand 0 */
424 /* opcode is a prefix */
426 /* instruction has extension in 8 bit imm */
428 /* instruction don't need Rex64 prefix. */
430 /* instruction require Rex64 prefix. */
432 /* deprecated fp insn, gets a warning */
434 /* insn has VEX prefix:
435 1: 128bit VEX prefix.
436 2: 256bit VEX prefix.
437 3: Scalar VEX prefix.
443 /* How to encode VEX.vvvv:
444 0: VEX.vvvv must be 1111b.
445 1: VEX.NDS. Register-only source is encoded in VEX.vvvv where
446 the content of source registers will be preserved.
447 VEX.DDS. The second register operand is encoded in VEX.vvvv
448 where the content of first source register will be overwritten
450 VEX.NDD2. The second destination register operand is encoded in
451 VEX.vvvv for instructions with 2 destination register operands.
452 For assembler, there are no difference between VEX.NDS, VEX.DDS
454 2. VEX.NDD. Register destination is encoded in VEX.vvvv for
455 instructions with 1 destination register operand.
456 3. VEX.LWP. Register destination is encoded in VEX.vvvv and one
457 of the operands can access a memory location.
463 /* How the VEX.W bit is used:
464 0: Set by the REX.W bit.
465 1: VEX.W0. Should always be 0.
466 2: VEX.W1. Should always be 1.
471 /* VEX opcode prefix:
472 0: VEX 0x0F opcode prefix.
473 1: VEX 0x0F38 opcode prefix.
474 2: VEX 0x0F3A opcode prefix
475 3: XOP 0x08 opcode prefix.
476 4: XOP 0x09 opcode prefix
477 5: XOP 0x0A opcode prefix.
486 /* number of VEX source operands:
487 0: <= 2 source operands.
488 1: 2 XOP source operands.
489 2: 3 source operands.
491 #define XOP2SOURCES 1
492 #define VEX3SOURCES 2
494 /* instruction has VEX 8 bit imm */
496 /* Instruction with vector SIB byte:
497 1: 128bit vector register.
498 2: 256bit vector register.
499 3: 512bit vector register.
505 /* SSE to AVX support required */
507 /* No AVX equivalent */
510 /* insn has EVEX prefix:
511 1: 512bit EVEX prefix.
512 2: 128bit EVEX prefix.
513 3: 256bit EVEX prefix.
514 4: Length-ignored (LIG) EVEX prefix.
522 /* AVX512 masking support:
525 3: Both zeroing and merging masking.
527 #define ZEROING_MASKING 1
528 #define MERGING_MASKING 2
529 #define BOTH_MASKING 3
532 /* Input element size of vector insn:
543 #define NO_BROADCAST 0
544 #define BROADCAST_1TO16 1
545 #define BROADCAST_1TO8 2
546 #define BROADCAST_1TO4 3
547 #define BROADCAST_1TO2 4
550 /* Static rounding control is supported. */
553 /* Supress All Exceptions is supported. */
556 /* Copressed Disp8*N attribute. */
559 /* Default mask isn't allowed. */
562 /* Compatible with old (<= 2.8.1) versions of gcc */
574 /* The last bitfield in i386_opcode_modifier. */
578 typedef struct i386_opcode_modifier
583 unsigned int modrm:1;
584 unsigned int shortform:1;
586 unsigned int jumpdword:1;
587 unsigned int jumpbyte:1;
588 unsigned int jumpintersegment:1;
589 unsigned int floatmf:1;
590 unsigned int floatr:1;
591 unsigned int floatd:1;
592 unsigned int size16:1;
593 unsigned int size32:1;
594 unsigned int size64:1;
595 unsigned int checkregsize:1;
596 unsigned int ignoresize:1;
597 unsigned int defaultsize:1;
598 unsigned int no_bsuf:1;
599 unsigned int no_wsuf:1;
600 unsigned int no_lsuf:1;
601 unsigned int no_ssuf:1;
602 unsigned int no_qsuf:1;
603 unsigned int no_ldsuf:1;
604 unsigned int fwait:1;
605 unsigned int isstring:1;
606 unsigned int bndprefixok:1;
607 unsigned int islockable:1;
608 unsigned int regkludge:1;
609 unsigned int firstxmm0:1;
610 unsigned int implicit1stxmm0:1;
611 unsigned int hleprefixok:2;
612 unsigned int repprefixok:1;
613 unsigned int todword:1;
614 unsigned int toqword:1;
615 unsigned int addrprefixop0:1;
616 unsigned int isprefix:1;
617 unsigned int immext:1;
618 unsigned int norex64:1;
619 unsigned int rex64:1;
622 unsigned int vexvvvv:2;
624 unsigned int vexopcode:3;
625 unsigned int vexsources:2;
626 unsigned int veximmext:1;
627 unsigned int vecsib:2;
628 unsigned int sse2avx:1;
629 unsigned int noavx:1;
631 unsigned int masking:2;
632 unsigned int vecesize:1;
633 unsigned int broadcast:3;
634 unsigned int staticrounding:1;
636 unsigned int disp8memshift:3;
637 unsigned int nodefmask:1;
638 unsigned int oldgcc:1;
639 unsigned int attmnemonic:1;
640 unsigned int attsyntax:1;
641 unsigned int intelsyntax:1;
642 unsigned int amd64:1;
643 unsigned int intel64:1;
644 } i386_opcode_modifier;
646 /* Position of operand_type bits. */
658 /* Floating pointer stack register */
666 /* AVX512 registers */
668 /* Vector Mask registers */
670 /* Control register */
676 /* 2 bit segment register */
678 /* 3 bit segment register */
680 /* 1 bit immediate */
682 /* 8 bit immediate */
684 /* 8 bit immediate sign extended */
686 /* 16 bit immediate */
688 /* 32 bit immediate */
690 /* 32 bit immediate sign extended */
692 /* 64 bit immediate */
694 /* 8bit/16bit/32bit displacements are used in different ways,
695 depending on the instruction. For jumps, they specify the
696 size of the PC relative displacement, for instructions with
697 memory operand, they specify the size of the offset relative
698 to the base register, and for instructions with memory offset
699 such as `mov 1234,%al' they specify the size of the offset
700 relative to the segment base. */
701 /* 8 bit displacement */
703 /* 16 bit displacement */
705 /* 32 bit displacement */
707 /* 32 bit signed displacement */
709 /* 64 bit displacement */
711 /* Accumulator %al/%ax/%eax/%rax */
713 /* Floating pointer top stack register %st(0) */
715 /* Register which can be used for base or index in memory operand. */
717 /* Register to hold in/out port addr = dx */
719 /* Register to hold shift count = cl */
721 /* Absolute address for jump. */
723 /* String insn operand with fixed es segment */
725 /* RegMem is for instructions with a modrm byte where the register
726 destination operand should be encoded in the mod and regmem fields.
727 Normally, it will be encoded in the reg field. We add a RegMem
728 flag to the destination register operand to indicate that it should
729 be encoded in the regmem field. */
735 /* WORD memory. 2 byte */
737 /* DWORD memory. 4 byte */
739 /* FWORD memory. 6 byte */
741 /* QWORD memory. 8 byte */
743 /* TBYTE memory. 10 byte */
745 /* XMMWORD memory. */
747 /* YMMWORD memory. */
749 /* ZMMWORD memory. */
751 /* Unspecified memory size. */
753 /* Any memory size. */
756 /* Vector 4 bit immediate. */
759 /* Bound register. */
762 /* Vector 8bit displacement */
765 /* The last bitfield in i386_operand_type. */
769 #define OTNumOfUints \
770 (OTMax / sizeof (unsigned int) / CHAR_BIT + 1)
771 #define OTNumOfBits \
772 (OTNumOfUints * sizeof (unsigned int) * CHAR_BIT)
774 /* If you get a compiler error for zero width of the unused field,
776 #define OTUnused (OTMax + 1)
778 typedef union i386_operand_type
783 unsigned int reg16:1;
784 unsigned int reg32:1;
785 unsigned int reg64:1;
786 unsigned int floatreg:1;
787 unsigned int regmmx:1;
788 unsigned int regxmm:1;
789 unsigned int regymm:1;
790 unsigned int regzmm:1;
791 unsigned int regmask:1;
792 unsigned int control:1;
793 unsigned int debug:1;
795 unsigned int sreg2:1;
796 unsigned int sreg3:1;
799 unsigned int imm8s:1;
800 unsigned int imm16:1;
801 unsigned int imm32:1;
802 unsigned int imm32s:1;
803 unsigned int imm64:1;
804 unsigned int disp8:1;
805 unsigned int disp16:1;
806 unsigned int disp32:1;
807 unsigned int disp32s:1;
808 unsigned int disp64:1;
810 unsigned int floatacc:1;
811 unsigned int baseindex:1;
812 unsigned int inoutportreg:1;
813 unsigned int shiftcount:1;
814 unsigned int jumpabsolute:1;
815 unsigned int esseg:1;
816 unsigned int regmem:1;
820 unsigned int dword:1;
821 unsigned int fword:1;
822 unsigned int qword:1;
823 unsigned int tbyte:1;
824 unsigned int xmmword:1;
825 unsigned int ymmword:1;
826 unsigned int zmmword:1;
827 unsigned int unspecified:1;
828 unsigned int anysize:1;
829 unsigned int vec_imm4:1;
830 unsigned int regbnd:1;
831 unsigned int vec_disp8:1;
833 unsigned int unused:(OTNumOfBits - OTUnused);
836 unsigned int array[OTNumOfUints];
839 typedef struct insn_template
841 /* instruction name sans width suffix ("mov" for movl insns) */
844 /* how many operands */
845 unsigned int operands;
847 /* base_opcode is the fundamental opcode byte without optional
849 unsigned int base_opcode;
850 #define Opcode_D 0x2 /* Direction bit:
851 set if Reg --> Regmem;
852 unset if Regmem --> Reg. */
853 #define Opcode_FloatR 0x8 /* Bit to swap src/dest for float insns. */
854 #define Opcode_FloatD 0x400 /* Direction bit for float insns. */
856 /* extension_opcode is the 3 bit extension for group <n> insns.
857 This field is also used to store the 8-bit opcode suffix for the
858 AMD 3DNow! instructions.
859 If this template has no extension opcode (the usual case) use None
861 unsigned int extension_opcode;
862 #define None 0xffff /* If no extension_opcode is possible. */
865 unsigned char opcode_length;
867 /* cpu feature flags */
868 i386_cpu_flags cpu_flags;
870 /* the bits in opcode_modifier are used to generate the final opcode from
871 the base_opcode. These bits also are used to detect alternate forms of
872 the same instruction */
873 i386_opcode_modifier opcode_modifier;
875 /* operand_types[i] describes the type of operand i. This is made
876 by OR'ing together all of the possible type masks. (e.g.
877 'operand_types[i] = Reg|Imm' specifies that operand i can be
878 either a register or an immediate operand. */
879 i386_operand_type operand_types[MAX_OPERANDS];
883 extern const insn_template i386_optab[];
885 /* these are for register name --> number & type hash lookup */
889 i386_operand_type reg_type;
890 unsigned char reg_flags;
891 #define RegRex 0x1 /* Extended register. */
892 #define RegRex64 0x2 /* Extended 8 bit register. */
893 #define RegVRex 0x4 /* Extended vector register. */
894 unsigned char reg_num;
895 #define RegRip ((unsigned char ) ~0)
896 #define RegEip (RegRip - 1)
897 /* EIZ and RIZ are fake index registers. */
898 #define RegEiz (RegEip - 1)
899 #define RegRiz (RegEiz - 1)
900 /* FLAT is a fake segment register (Intel mode). */
901 #define RegFlat ((unsigned char) ~0)
902 signed char dw2_regnum[2];
903 #define Dw2Inval (-1)
907 /* Entries in i386_regtab. */
910 #define REGNAM_EAX 41
912 extern const reg_entry i386_regtab[];
913 extern const unsigned int i386_regtab_size;
918 unsigned int seg_prefix;
922 extern const seg_entry cs;
923 extern const seg_entry ds;
924 extern const seg_entry ss;
925 extern const seg_entry es;
926 extern const seg_entry fs;
927 extern const seg_entry gs;