1 /* Declarations for Intel 80386 opcode table
2 Copyright 2007, 2008, 2009
3 Free Software Foundation, Inc.
5 This file is part of the GNU opcodes library.
7 This library is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3, or (at your option)
12 It is distributed in the hope that it will be useful, but WITHOUT
13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
14 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
15 License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GAS; see the file COPYING. If not, write to the Free
19 Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
22 #include "opcode/i386.h"
31 /* Position of cpu flags bitfiled. */
33 /* i186 or better required */
35 /* i286 or better required */
36 #define Cpu286 (Cpu186 + 1)
37 /* i386 or better required */
38 #define Cpu386 (Cpu286 + 1)
39 /* i486 or better required */
40 #define Cpu486 (Cpu386 + 1)
41 /* i585 or better required */
42 #define Cpu586 (Cpu486 + 1)
43 /* i686 or better required */
44 #define Cpu686 (Cpu586 + 1)
45 /* CLFLUSH Instuction support required */
46 #define CpuClflush (Cpu686 + 1)
47 /* SYSCALL Instuctions support required */
48 #define CpuSYSCALL (CpuClflush + 1)
49 /* MMX support required */
50 #define CpuMMX (CpuSYSCALL + 1)
51 /* SSE support required */
52 #define CpuSSE (CpuMMX + 1)
53 /* SSE2 support required */
54 #define CpuSSE2 (CpuSSE + 1)
55 /* 3dnow! support required */
56 #define Cpu3dnow (CpuSSE2 + 1)
57 /* 3dnow! Extensions support required */
58 #define Cpu3dnowA (Cpu3dnow + 1)
59 /* SSE3 support required */
60 #define CpuSSE3 (Cpu3dnowA + 1)
61 /* VIA PadLock required */
62 #define CpuPadLock (CpuSSE3 + 1)
63 /* AMD Secure Virtual Machine Ext-s required */
64 #define CpuSVME (CpuPadLock + 1)
65 /* VMX Instructions required */
66 #define CpuVMX (CpuSVME + 1)
67 /* SMX Instructions required */
68 #define CpuSMX (CpuVMX + 1)
69 /* SSSE3 support required */
70 #define CpuSSSE3 (CpuSMX + 1)
71 /* SSE4a support required */
72 #define CpuSSE4a (CpuSSSE3 + 1)
73 /* ABM New Instructions required */
74 #define CpuABM (CpuSSE4a + 1)
75 /* SSE4.1 support required */
76 #define CpuSSE4_1 (CpuABM + 1)
77 /* SSE4.2 support required */
78 #define CpuSSE4_2 (CpuSSE4_1 + 1)
79 /* AVX support required */
80 #define CpuAVX (CpuSSE4_2 + 1)
81 /* Xsave/xrstor New Instuctions support required */
82 #define CpuXsave (CpuAVX + 1)
83 /* AES support required */
84 #define CpuAES (CpuXsave + 1)
85 /* PCLMUL support required */
86 #define CpuPCLMUL (CpuAES + 1)
87 /* FMA support required */
88 #define CpuFMA (CpuPCLMUL + 1)
89 /* MOVBE Instuction support required */
90 #define CpuMovbe (CpuFMA + 1)
91 /* EPT Instructions required */
92 #define CpuEPT (CpuMovbe + 1)
93 /* RDTSCP Instuction support required */
94 #define CpuRdtscp (CpuEPT + 1)
95 /* 64bit support available, used by -march= in assembler. */
96 #define CpuLM (CpuRdtscp + 1)
97 /* 64bit support required */
98 #define Cpu64 (CpuLM + 1)
99 /* Not supported in the 64bit mode */
100 #define CpuNo64 (Cpu64 + 1)
101 /* The last bitfield in i386_cpu_flags. */
102 #define CpuMax CpuNo64
104 #define CpuNumOfUints \
105 (CpuMax / sizeof (unsigned int) / CHAR_BIT + 1)
106 #define CpuNumOfBits \
107 (CpuNumOfUints * sizeof (unsigned int) * CHAR_BIT)
109 /* If you get a compiler error for zero width of the unused field,
111 #define CpuUnused (CpuMax + 1)
113 /* We can check if an instruction is available with array instead
115 typedef union i386_cpu_flags
119 unsigned int cpui186:1;
120 unsigned int cpui286:1;
121 unsigned int cpui386:1;
122 unsigned int cpui486:1;
123 unsigned int cpui586:1;
124 unsigned int cpui686:1;
125 unsigned int cpuclflush:1;
126 unsigned int cpusyscall:1;
127 unsigned int cpummx:1;
128 unsigned int cpusse:1;
129 unsigned int cpusse2:1;
130 unsigned int cpua3dnow:1;
131 unsigned int cpua3dnowa:1;
132 unsigned int cpusse3:1;
133 unsigned int cpupadlock:1;
134 unsigned int cpusvme:1;
135 unsigned int cpuvmx:1;
136 unsigned int cpusmx:1;
137 unsigned int cpussse3:1;
138 unsigned int cpusse4a:1;
139 unsigned int cpuabm:1;
140 unsigned int cpusse4_1:1;
141 unsigned int cpusse4_2:1;
142 unsigned int cpuavx:1;
143 unsigned int cpuxsave:1;
144 unsigned int cpuaes:1;
145 unsigned int cpupclmul:1;
146 unsigned int cpufma:1;
147 unsigned int cpumovbe:1;
148 unsigned int cpuept:1;
149 unsigned int cpurdtscp:1;
150 unsigned int cpulm:1;
151 unsigned int cpu64:1;
152 unsigned int cpuno64:1;
154 unsigned int unused:(CpuNumOfBits - CpuUnused);
157 unsigned int array[CpuNumOfUints];
160 /* Position of opcode_modifier bits. */
162 /* has direction bit. */
164 /* set if operands can be words or dwords encoded the canonical way */
166 /* Skip the current insn and use the next insn in i386-opc.tbl to swap
167 operand in encoding. */
169 /* insn has a modrm byte. */
170 #define Modrm (S + 1)
171 /* register is in low 3 bits of opcode */
172 #define ShortForm (Modrm + 1)
173 /* special case for jump insns. */
174 #define Jump (ShortForm + 1)
176 #define JumpDword (Jump + 1)
178 #define JumpByte (JumpDword + 1)
179 /* special case for intersegment leaps/calls */
180 #define JumpInterSegment (JumpByte + 1)
181 /* FP insn memory format bit, sized by 0x4 */
182 #define FloatMF (JumpInterSegment + 1)
183 /* src/dest swap for floats. */
184 #define FloatR (FloatMF + 1)
185 /* has float insn direction bit. */
186 #define FloatD (FloatR + 1)
187 /* needs size prefix if in 32-bit mode */
188 #define Size16 (FloatD + 1)
189 /* needs size prefix if in 16-bit mode */
190 #define Size32 (Size16 + 1)
191 /* needs size prefix if in 64-bit mode */
192 #define Size64 (Size32 + 1)
193 /* instruction ignores operand size prefix and in Intel mode ignores
194 mnemonic size suffix check. */
195 #define IgnoreSize (Size64 + 1)
196 /* default insn size depends on mode */
197 #define DefaultSize (IgnoreSize + 1)
198 /* b suffix on instruction illegal */
199 #define No_bSuf (DefaultSize + 1)
200 /* w suffix on instruction illegal */
201 #define No_wSuf (No_bSuf + 1)
202 /* l suffix on instruction illegal */
203 #define No_lSuf (No_wSuf + 1)
204 /* s suffix on instruction illegal */
205 #define No_sSuf (No_lSuf + 1)
206 /* q suffix on instruction illegal */
207 #define No_qSuf (No_sSuf + 1)
208 /* long double suffix on instruction illegal */
209 #define No_ldSuf (No_qSuf + 1)
210 /* instruction needs FWAIT */
211 #define FWait (No_ldSuf + 1)
212 /* quick test for string instructions */
213 #define IsString (FWait + 1)
214 /* fake an extra reg operand for clr, imul and special register
215 processing for some instructions. */
216 #define RegKludge (IsString + 1)
217 /* The first operand must be xmm0 */
218 #define FirstXmm0 (RegKludge + 1)
219 /* An implicit xmm0 as the first operand */
220 #define Implicit1stXmm0 (FirstXmm0 + 1)
221 /* BYTE is OK in Intel syntax. */
222 #define ByteOkIntel (Implicit1stXmm0 + 1)
223 /* Convert to DWORD */
224 #define ToDword (ByteOkIntel + 1)
225 /* Convert to QWORD */
226 #define ToQword (ToDword + 1)
227 /* Address prefix changes operand 0 */
228 #define AddrPrefixOp0 (ToQword + 1)
229 /* opcode is a prefix */
230 #define IsPrefix (AddrPrefixOp0 + 1)
231 /* instruction has extension in 8 bit imm */
232 #define ImmExt (IsPrefix + 1)
233 /* instruction don't need Rex64 prefix. */
234 #define NoRex64 (ImmExt + 1)
235 /* instruction require Rex64 prefix. */
236 #define Rex64 (NoRex64 + 1)
237 /* deprecated fp insn, gets a warning */
238 #define Ugh (Rex64 + 1)
239 /* insn has VEX prefix. */
240 #define Vex (Ugh + 1)
241 /* insn has 256bit VEX prefix. */
242 #define Vex256 (Vex + 1)
243 /* insn has VEX NDS. Register-only source is encoded in Vex prefix.
244 We use VexNDS on insns with VEX DDS since the register-only source
245 is the second source register. */
246 #define VexNDS (Vex256 + 1)
247 /* insn has VEX NDD. Register destination is encoded in Vex
249 #define VexNDD (VexNDS + 1)
250 /* insn has VEX W0. */
251 #define VexW0 (VexNDD + 1)
252 /* insn has VEX W1. */
253 #define VexW1 (VexW0 + 1)
254 /* insn has VEX 0x0F opcode prefix. */
255 #define Vex0F (VexW1 + 1)
256 /* insn has VEX 0x0F38 opcode prefix. */
257 #define Vex0F38 (Vex0F + 1)
258 /* insn has VEX 0x0F3A opcode prefix. */
259 #define Vex0F3A (Vex0F38 + 1)
260 /* insn has VEX prefix with 3 soures. */
261 #define Vex3Sources (Vex0F3A + 1)
262 /* instruction has VEX 8 bit imm */
263 #define VexImmExt (Vex3Sources + 1)
264 /* SSE to AVX support required */
265 #define SSE2AVX (VexImmExt + 1)
266 /* No AVX equivalent */
267 #define NoAVX (SSE2AVX + 1)
268 /* Compatible with old (<= 2.8.1) versions of gcc */
269 #define OldGcc (NoAVX + 1)
271 #define ATTMnemonic (OldGcc + 1)
273 #define ATTSyntax (ATTMnemonic + 1)
275 #define IntelSyntax (ATTSyntax + 1)
276 /* The last bitfield in i386_opcode_modifier. */
277 #define Opcode_Modifier_Max IntelSyntax
279 typedef struct i386_opcode_modifier
284 unsigned int modrm:1;
285 unsigned int shortform:1;
287 unsigned int jumpdword:1;
288 unsigned int jumpbyte:1;
289 unsigned int jumpintersegment:1;
290 unsigned int floatmf:1;
291 unsigned int floatr:1;
292 unsigned int floatd:1;
293 unsigned int size16:1;
294 unsigned int size32:1;
295 unsigned int size64:1;
296 unsigned int ignoresize:1;
297 unsigned int defaultsize:1;
298 unsigned int no_bsuf:1;
299 unsigned int no_wsuf:1;
300 unsigned int no_lsuf:1;
301 unsigned int no_ssuf:1;
302 unsigned int no_qsuf:1;
303 unsigned int no_ldsuf:1;
304 unsigned int fwait:1;
305 unsigned int isstring:1;
306 unsigned int regkludge:1;
307 unsigned int firstxmm0:1;
308 unsigned int implicit1stxmm0:1;
309 unsigned int byteokintel:1;
310 unsigned int todword:1;
311 unsigned int toqword:1;
312 unsigned int addrprefixop0:1;
313 unsigned int isprefix:1;
314 unsigned int immext:1;
315 unsigned int norex64:1;
316 unsigned int rex64:1;
319 unsigned int vex256:1;
320 unsigned int vexnds:1;
321 unsigned int vexndd:1;
322 unsigned int vexw0:1;
323 unsigned int vexw1:1;
324 unsigned int vex0f:1;
325 unsigned int vex0f38:1;
326 unsigned int vex0f3a:1;
327 unsigned int vex3sources:1;
328 unsigned int veximmext:1;
329 unsigned int sse2avx:1;
330 unsigned int noavx:1;
331 unsigned int oldgcc:1;
332 unsigned int attmnemonic:1;
333 unsigned int attsyntax:1;
334 unsigned int intelsyntax:1;
335 } i386_opcode_modifier;
337 /* Position of operand_type bits. */
342 #define Reg16 (Reg8 + 1)
344 #define Reg32 (Reg16 + 1)
346 #define Reg64 (Reg32 + 1)
347 /* Floating pointer stack register */
348 #define FloatReg (Reg64 + 1)
350 #define RegMMX (FloatReg + 1)
352 #define RegXMM (RegMMX + 1)
354 #define RegYMM (RegXMM + 1)
355 /* Control register */
356 #define Control (RegYMM + 1)
358 #define Debug (Control + 1)
360 #define Test (Debug + 1)
361 /* 2 bit segment register */
362 #define SReg2 (Test + 1)
363 /* 3 bit segment register */
364 #define SReg3 (SReg2 + 1)
365 /* 1 bit immediate */
366 #define Imm1 (SReg3 + 1)
367 /* 8 bit immediate */
368 #define Imm8 (Imm1 + 1)
369 /* 8 bit immediate sign extended */
370 #define Imm8S (Imm8 + 1)
371 /* 16 bit immediate */
372 #define Imm16 (Imm8S + 1)
373 /* 32 bit immediate */
374 #define Imm32 (Imm16 + 1)
375 /* 32 bit immediate sign extended */
376 #define Imm32S (Imm32 + 1)
377 /* 64 bit immediate */
378 #define Imm64 (Imm32S + 1)
379 /* 8bit/16bit/32bit displacements are used in different ways,
380 depending on the instruction. For jumps, they specify the
381 size of the PC relative displacement, for instructions with
382 memory operand, they specify the size of the offset relative
383 to the base register, and for instructions with memory offset
384 such as `mov 1234,%al' they specify the size of the offset
385 relative to the segment base. */
386 /* 8 bit displacement */
387 #define Disp8 (Imm64 + 1)
388 /* 16 bit displacement */
389 #define Disp16 (Disp8 + 1)
390 /* 32 bit displacement */
391 #define Disp32 (Disp16 + 1)
392 /* 32 bit signed displacement */
393 #define Disp32S (Disp32 + 1)
394 /* 64 bit displacement */
395 #define Disp64 (Disp32S + 1)
396 /* Accumulator %al/%ax/%eax/%rax */
397 #define Acc (Disp64 + 1)
398 /* Floating pointer top stack register %st(0) */
399 #define FloatAcc (Acc + 1)
400 /* Register which can be used for base or index in memory operand. */
401 #define BaseIndex (FloatAcc + 1)
402 /* Register to hold in/out port addr = dx */
403 #define InOutPortReg (BaseIndex + 1)
404 /* Register to hold shift count = cl */
405 #define ShiftCount (InOutPortReg + 1)
406 /* Absolute address for jump. */
407 #define JumpAbsolute (ShiftCount + 1)
408 /* String insn operand with fixed es segment */
409 #define EsSeg (JumpAbsolute + 1)
410 /* RegMem is for instructions with a modrm byte where the register
411 destination operand should be encoded in the mod and regmem fields.
412 Normally, it will be encoded in the reg field. We add a RegMem
413 flag to the destination register operand to indicate that it should
414 be encoded in the regmem field. */
415 #define RegMem (EsSeg + 1)
417 #define Mem (RegMem + 1)
419 #define Byte (Mem + 1)
420 /* WORD memory. 2 byte */
421 #define Word (Byte + 1)
422 /* DWORD memory. 4 byte */
423 #define Dword (Word + 1)
424 /* FWORD memory. 6 byte */
425 #define Fword (Dword + 1)
426 /* QWORD memory. 8 byte */
427 #define Qword (Fword + 1)
428 /* TBYTE memory. 10 byte */
429 #define Tbyte (Qword + 1)
430 /* XMMWORD memory. */
431 #define Xmmword (Tbyte + 1)
432 /* YMMWORD memory. */
433 #define Ymmword (Xmmword + 1)
434 /* Unspecified memory size. */
435 #define Unspecified (Ymmword + 1)
436 /* Any memory size. */
437 #define Anysize (Unspecified + 1)
439 /* The last bitfield in i386_operand_type. */
440 #define OTMax Anysize
442 #define OTNumOfUints \
443 (OTMax / sizeof (unsigned int) / CHAR_BIT + 1)
444 #define OTNumOfBits \
445 (OTNumOfUints * sizeof (unsigned int) * CHAR_BIT)
447 /* If you get a compiler error for zero width of the unused field,
449 #define OTUnused (OTMax + 1)
451 typedef union i386_operand_type
456 unsigned int reg16:1;
457 unsigned int reg32:1;
458 unsigned int reg64:1;
459 unsigned int floatreg:1;
460 unsigned int regmmx:1;
461 unsigned int regxmm:1;
462 unsigned int regymm:1;
463 unsigned int control:1;
464 unsigned int debug:1;
466 unsigned int sreg2:1;
467 unsigned int sreg3:1;
470 unsigned int imm8s:1;
471 unsigned int imm16:1;
472 unsigned int imm32:1;
473 unsigned int imm32s:1;
474 unsigned int imm64:1;
475 unsigned int disp8:1;
476 unsigned int disp16:1;
477 unsigned int disp32:1;
478 unsigned int disp32s:1;
479 unsigned int disp64:1;
481 unsigned int floatacc:1;
482 unsigned int baseindex:1;
483 unsigned int inoutportreg:1;
484 unsigned int shiftcount:1;
485 unsigned int jumpabsolute:1;
486 unsigned int esseg:1;
487 unsigned int regmem:1;
491 unsigned int dword:1;
492 unsigned int fword:1;
493 unsigned int qword:1;
494 unsigned int tbyte:1;
495 unsigned int xmmword:1;
496 unsigned int ymmword:1;
497 unsigned int unspecified:1;
498 unsigned int anysize:1;
500 unsigned int unused:(OTNumOfBits - OTUnused);
503 unsigned int array[OTNumOfUints];
506 typedef struct template
508 /* instruction name sans width suffix ("mov" for movl insns) */
511 /* how many operands */
512 unsigned int operands;
514 /* base_opcode is the fundamental opcode byte without optional
516 unsigned int base_opcode;
517 #define Opcode_D 0x2 /* Direction bit:
518 set if Reg --> Regmem;
519 unset if Regmem --> Reg. */
520 #define Opcode_FloatR 0x8 /* Bit to swap src/dest for float insns. */
521 #define Opcode_FloatD 0x400 /* Direction bit for float insns. */
523 /* extension_opcode is the 3 bit extension for group <n> insns.
524 This field is also used to store the 8-bit opcode suffix for the
525 AMD 3DNow! instructions.
526 If this template has no extension opcode (the usual case) use None
528 unsigned int extension_opcode;
529 #define None 0xffff /* If no extension_opcode is possible. */
532 unsigned char opcode_length;
534 /* cpu feature flags */
535 i386_cpu_flags cpu_flags;
537 /* the bits in opcode_modifier are used to generate the final opcode from
538 the base_opcode. These bits also are used to detect alternate forms of
539 the same instruction */
540 i386_opcode_modifier opcode_modifier;
542 /* operand_types[i] describes the type of operand i. This is made
543 by OR'ing together all of the possible type masks. (e.g.
544 'operand_types[i] = Reg|Imm' specifies that operand i can be
545 either a register or an immediate operand. */
546 i386_operand_type operand_types[MAX_OPERANDS];
550 extern const template i386_optab[];
552 /* these are for register name --> number & type hash lookup */
556 i386_operand_type reg_type;
557 unsigned char reg_flags;
558 #define RegRex 0x1 /* Extended register. */
559 #define RegRex64 0x2 /* Extended 8 bit register. */
560 unsigned char reg_num;
561 #define RegRip ((unsigned char ) ~0)
562 #define RegEip (RegRip - 1)
563 /* EIZ and RIZ are fake index registers. */
564 #define RegEiz (RegEip - 1)
565 #define RegRiz (RegEiz - 1)
566 /* FLAT is a fake segment register (Intel mode). */
567 #define RegFlat ((unsigned char) ~0)
568 signed char dw2_regnum[2];
569 #define Dw2Inval (-1)
573 /* Entries in i386_regtab. */
576 #define REGNAM_EAX 41
578 extern const reg_entry i386_regtab[];
579 extern const unsigned int i386_regtab_size;
584 unsigned int seg_prefix;
588 extern const seg_entry cs;
589 extern const seg_entry ds;
590 extern const seg_entry ss;
591 extern const seg_entry es;
592 extern const seg_entry fs;
593 extern const seg_entry gs;