2 * Copyright (c) 2008 The DragonFly Project. All rights reserved.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in
12 * the documentation and/or other materials provided with the
14 * 3. Neither the name of The DragonFly Project nor the names of its
15 * contributors may be used to endorse or promote products derived
16 * from this software without specific, prior written permission.
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
21 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
22 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
23 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
24 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
25 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
26 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
27 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
28 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * Mach Operating System
34 * Copyright (c) 1991,1990 Carnegie Mellon University
35 * All Rights Reserved.
37 * Permission to use, copy, modify and distribute this software and its
38 * documentation is hereby granted, provided that both the copyright
39 * notice and this permission notice appear in all copies of the
40 * software, derivative works or modified versions, and any portions
41 * thereof, and that both notices appear in supporting documentation.
43 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS
44 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
45 * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
47 * Carnegie Mellon requests users of this software to return to
49 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
50 * School of Computer Science
51 * Carnegie Mellon University
52 * Pittsburgh PA 15213-3890
54 * any improvements or extensions that they make and grant Carnegie the
55 * rights to redistribute these changes.
59 * Instruction disassembler.
61 #include <sys/param.h>
64 #include <ddb/db_access.h>
65 #include <ddb/db_sym.h>
92 #define E 1 /* general effective address */
93 #define Eind 2 /* indirect address (jump, call) */
94 #define Ew 3 /* address, word size */
95 #define Eb 4 /* address, byte size */
96 #define R 5 /* register, in 'reg' field */
97 #define Rw 6 /* word register, in 'reg' field */
98 #define Ri 7 /* register in instruction */
99 #define S 8 /* segment reg, in 'reg' field */
100 #define Si 9 /* segment reg, in instruction */
101 #define A 10 /* accumulator */
102 #define BX 11 /* (bx) */
103 #define CL 12 /* cl, for shifts */
104 #define DX 13 /* dx, for IO */
105 #define SI 14 /* si */
106 #define DI 15 /* di */
107 #define CR 16 /* control register */
108 #define DR 17 /* debug register */
109 #define TR 18 /* test register */
110 #define I 19 /* immediate, unsigned */
111 #define Is 20 /* immediate, signed */
112 #define Ib 21 /* byte immediate, unsigned */
113 #define Ibs 22 /* byte immediate, signed */
114 #define Iw 23 /* word immediate, unsigned */
115 #define Ilq 24 /* long/quad immediate, unsigned */
116 #define O 25 /* direct address */
117 #define Db 26 /* byte displacement from EIP */
118 #define Dl 27 /* long displacement from EIP */
119 #define o1 28 /* constant 1 */
120 #define o3 29 /* constant 3 */
121 #define OS 30 /* immediate offset/segment */
122 #define ST 31 /* FP stack top */
123 #define STI 32 /* FP stack */
124 #define X 33 /* extended FP op */
125 #define XA 34 /* for 'fstcw %ax' */
126 #define El 35 /* address, long/quad size */
127 #define Ril 36 /* long register in instruction */
128 #define Iba 37 /* byte immediate, don't print if 0xa */
129 #define EL 38 /* address, explicitly long size */
132 const char * i_name; /* name */
133 short i_has_modrm; /* has regmodrm byte */
134 short i_size; /* operand size */
135 int i_mode; /* addressing modes */
136 const void * i_extra; /* pointer to extra opcode table */
140 #define op2(x,y) ((x)|((y)<<8))
141 #define op3(x,y,z) ((x)|((y)<<8)|((z)<<16))
144 const char * f_name; /* name for memory instruction */
145 int f_size; /* size for memory instruction */
146 int f_rrmode; /* mode for rr instruction */
147 const void * f_rrname; /* name for rr instruction
148 (or pointer to table) */
151 static const char * const db_Grp6[] = {
162 static const char * const db_Grp7[] = {
173 static const char * const db_Grp8[] = {
184 static const char * const db_Grp9[] = {
195 static const struct inst db_inst_0f0x[] = {
196 /*00*/ { "", TRUE, NONE, op1(Ew), db_Grp6 },
197 /*01*/ { "", TRUE, NONE, op1(Ew), db_Grp7 },
198 /*02*/ { "lar", TRUE, LONG, op2(E,R), 0 },
199 /*03*/ { "lsl", TRUE, LONG, op2(E,R), 0 },
200 /*04*/ { "", FALSE, NONE, 0, 0 },
201 /*05*/ { "", FALSE, NONE, 0, 0 },
202 /*06*/ { "clts", FALSE, NONE, 0, 0 },
203 /*07*/ { "", FALSE, NONE, 0, 0 },
205 /*08*/ { "invd", FALSE, NONE, 0, 0 },
206 /*09*/ { "wbinvd",FALSE, NONE, 0, 0 },
207 /*0a*/ { "", FALSE, NONE, 0, 0 },
208 /*0b*/ { "", FALSE, NONE, 0, 0 },
209 /*0c*/ { "", FALSE, NONE, 0, 0 },
210 /*0d*/ { "", FALSE, NONE, 0, 0 },
211 /*0e*/ { "", FALSE, NONE, 0, 0 },
212 /*0f*/ { "", FALSE, NONE, 0, 0 },
215 static const struct inst db_inst_0f2x[] = {
216 /*20*/ { "mov", TRUE, LONG, op2(CR,El), 0 },
217 /*21*/ { "mov", TRUE, LONG, op2(DR,El), 0 },
218 /*22*/ { "mov", TRUE, LONG, op2(El,CR), 0 },
219 /*23*/ { "mov", TRUE, LONG, op2(El,DR), 0 },
220 /*24*/ { "mov", TRUE, LONG, op2(TR,El), 0 },
221 /*25*/ { "", FALSE, NONE, 0, 0 },
222 /*26*/ { "mov", TRUE, LONG, op2(El,TR), 0 },
223 /*27*/ { "", FALSE, NONE, 0, 0 },
225 /*28*/ { "", FALSE, NONE, 0, 0 },
226 /*29*/ { "", FALSE, NONE, 0, 0 },
227 /*2a*/ { "", FALSE, NONE, 0, 0 },
228 /*2b*/ { "", FALSE, NONE, 0, 0 },
229 /*2c*/ { "", FALSE, NONE, 0, 0 },
230 /*2d*/ { "", FALSE, NONE, 0, 0 },
231 /*2e*/ { "", FALSE, NONE, 0, 0 },
232 /*2f*/ { "", FALSE, NONE, 0, 0 },
235 static const struct inst db_inst_0f3x[] = {
236 /*30*/ { "wrmsr", FALSE, NONE, 0, 0 },
237 /*31*/ { "rdtsc", FALSE, NONE, 0, 0 },
238 /*32*/ { "rdmsr", FALSE, NONE, 0, 0 },
239 /*33*/ { "rdpmc", FALSE, NONE, 0, 0 },
240 /*34*/ { "", FALSE, NONE, 0, 0 },
241 /*35*/ { "", FALSE, NONE, 0, 0 },
242 /*36*/ { "", FALSE, NONE, 0, 0 },
243 /*37*/ { "", FALSE, NONE, 0, 0 },
245 /*38*/ { "", FALSE, NONE, 0, 0 },
246 /*39*/ { "", FALSE, NONE, 0, 0 },
247 /*3a*/ { "", FALSE, NONE, 0, 0 },
248 /*3b*/ { "", FALSE, NONE, 0, 0 },
249 /*3c*/ { "", FALSE, NONE, 0, 0 },
250 /*3d*/ { "", FALSE, NONE, 0, 0 },
251 /*3e*/ { "", FALSE, NONE, 0, 0 },
252 /*3f*/ { "", FALSE, NONE, 0, 0 },
255 static const struct inst db_inst_0f4x[] = {
256 /*40*/ { "cmovo", TRUE, NONE, op2(E, R), 0 },
257 /*41*/ { "cmovno", TRUE, NONE, op2(E, R), 0 },
258 /*42*/ { "cmovb", TRUE, NONE, op2(E, R), 0 },
259 /*43*/ { "cmovnb", TRUE, NONE, op2(E, R), 0 },
260 /*44*/ { "cmovz", TRUE, NONE, op2(E, R), 0 },
261 /*45*/ { "cmovnz", TRUE, NONE, op2(E, R), 0 },
262 /*46*/ { "cmovbe", TRUE, NONE, op2(E, R), 0 },
263 /*47*/ { "cmovnbe",TRUE, NONE, op2(E, R), 0 },
265 /*48*/ { "cmovs", TRUE, NONE, op2(E, R), 0 },
266 /*49*/ { "cmovns", TRUE, NONE, op2(E, R), 0 },
267 /*4a*/ { "cmovp", TRUE, NONE, op2(E, R), 0 },
268 /*4b*/ { "cmovnp", TRUE, NONE, op2(E, R), 0 },
269 /*4c*/ { "cmovl", TRUE, NONE, op2(E, R), 0 },
270 /*4d*/ { "cmovnl", TRUE, NONE, op2(E, R), 0 },
271 /*4e*/ { "cmovle", TRUE, NONE, op2(E, R), 0 },
272 /*4f*/ { "cmovnle",TRUE, NONE, op2(E, R), 0 },
275 static const struct inst db_inst_0f8x[] = {
276 /*80*/ { "jo", FALSE, NONE, op1(Dl), 0 },
277 /*81*/ { "jno", FALSE, NONE, op1(Dl), 0 },
278 /*82*/ { "jb", FALSE, NONE, op1(Dl), 0 },
279 /*83*/ { "jnb", FALSE, NONE, op1(Dl), 0 },
280 /*84*/ { "jz", FALSE, NONE, op1(Dl), 0 },
281 /*85*/ { "jnz", FALSE, NONE, op1(Dl), 0 },
282 /*86*/ { "jbe", FALSE, NONE, op1(Dl), 0 },
283 /*87*/ { "jnbe", FALSE, NONE, op1(Dl), 0 },
285 /*88*/ { "js", FALSE, NONE, op1(Dl), 0 },
286 /*89*/ { "jns", FALSE, NONE, op1(Dl), 0 },
287 /*8a*/ { "jp", FALSE, NONE, op1(Dl), 0 },
288 /*8b*/ { "jnp", FALSE, NONE, op1(Dl), 0 },
289 /*8c*/ { "jl", FALSE, NONE, op1(Dl), 0 },
290 /*8d*/ { "jnl", FALSE, NONE, op1(Dl), 0 },
291 /*8e*/ { "jle", FALSE, NONE, op1(Dl), 0 },
292 /*8f*/ { "jnle", FALSE, NONE, op1(Dl), 0 },
295 static const struct inst db_inst_0f9x[] = {
296 /*90*/ { "seto", TRUE, NONE, op1(Eb), 0 },
297 /*91*/ { "setno", TRUE, NONE, op1(Eb), 0 },
298 /*92*/ { "setb", TRUE, NONE, op1(Eb), 0 },
299 /*93*/ { "setnb", TRUE, NONE, op1(Eb), 0 },
300 /*94*/ { "setz", TRUE, NONE, op1(Eb), 0 },
301 /*95*/ { "setnz", TRUE, NONE, op1(Eb), 0 },
302 /*96*/ { "setbe", TRUE, NONE, op1(Eb), 0 },
303 /*97*/ { "setnbe",TRUE, NONE, op1(Eb), 0 },
305 /*98*/ { "sets", TRUE, NONE, op1(Eb), 0 },
306 /*99*/ { "setns", TRUE, NONE, op1(Eb), 0 },
307 /*9a*/ { "setp", TRUE, NONE, op1(Eb), 0 },
308 /*9b*/ { "setnp", TRUE, NONE, op1(Eb), 0 },
309 /*9c*/ { "setl", TRUE, NONE, op1(Eb), 0 },
310 /*9d*/ { "setnl", TRUE, NONE, op1(Eb), 0 },
311 /*9e*/ { "setle", TRUE, NONE, op1(Eb), 0 },
312 /*9f*/ { "setnle",TRUE, NONE, op1(Eb), 0 },
315 static const struct inst db_inst_0fax[] = {
316 /*a0*/ { "push", FALSE, NONE, op1(Si), 0 },
317 /*a1*/ { "pop", FALSE, NONE, op1(Si), 0 },
318 /*a2*/ { "cpuid", FALSE, NONE, 0, 0 },
319 /*a3*/ { "bt", TRUE, LONG, op2(R,E), 0 },
320 /*a4*/ { "shld", TRUE, LONG, op3(Ib,R,E), 0 },
321 /*a5*/ { "shld", TRUE, LONG, op3(CL,R,E), 0 },
322 /*a6*/ { "", FALSE, NONE, 0, 0 },
323 /*a7*/ { "", FALSE, NONE, 0, 0 },
325 /*a8*/ { "push", FALSE, NONE, op1(Si), 0 },
326 /*a9*/ { "pop", FALSE, NONE, op1(Si), 0 },
327 /*aa*/ { "rsm", FALSE, NONE, 0, 0 },
328 /*ab*/ { "bts", TRUE, LONG, op2(R,E), 0 },
329 /*ac*/ { "shrd", TRUE, LONG, op3(Ib,R,E), 0 },
330 /*ad*/ { "shrd", TRUE, LONG, op3(CL,R,E), 0 },
331 /*a6*/ { "", FALSE, NONE, 0, 0 },
332 /*a7*/ { "imul", TRUE, LONG, op2(E,R), 0 },
335 static const struct inst db_inst_0fbx[] = {
336 /*b0*/ { "cmpxchg",TRUE, BYTE, op2(R, E), 0 },
337 /*b0*/ { "cmpxchg",TRUE, LONG, op2(R, E), 0 },
338 /*b2*/ { "lss", TRUE, LONG, op2(E, R), 0 },
339 /*b3*/ { "btr", TRUE, LONG, op2(R, E), 0 },
340 /*b4*/ { "lfs", TRUE, LONG, op2(E, R), 0 },
341 /*b5*/ { "lgs", TRUE, LONG, op2(E, R), 0 },
342 /*b6*/ { "movzb", TRUE, LONG, op2(Eb, R), 0 },
343 /*b7*/ { "movzw", TRUE, LONG, op2(Ew, R), 0 },
345 /*b8*/ { "", FALSE, NONE, 0, 0 },
346 /*b9*/ { "", FALSE, NONE, 0, 0 },
347 /*ba*/ { "", TRUE, LONG, op2(Ib, E), db_Grp8 },
348 /*bb*/ { "btc", TRUE, LONG, op2(R, E), 0 },
349 /*bc*/ { "bsf", TRUE, LONG, op2(E, R), 0 },
350 /*bd*/ { "bsr", TRUE, LONG, op2(E, R), 0 },
351 /*be*/ { "movsb", TRUE, LONG, op2(Eb, R), 0 },
352 /*bf*/ { "movsw", TRUE, LONG, op2(Ew, R), 0 },
355 static const struct inst db_inst_0fcx[] = {
356 /*c0*/ { "xadd", TRUE, BYTE, op2(R, E), 0 },
357 /*c1*/ { "xadd", TRUE, LONG, op2(R, E), 0 },
358 /*c2*/ { "", FALSE, NONE, 0, 0 },
359 /*c3*/ { "", FALSE, NONE, 0, 0 },
360 /*c4*/ { "", FALSE, NONE, 0, 0 },
361 /*c5*/ { "", FALSE, NONE, 0, 0 },
362 /*c6*/ { "", FALSE, NONE, 0, 0 },
363 /*c7*/ { "", TRUE, NONE, op1(E), db_Grp9 },
364 /*c8*/ { "bswap", FALSE, LONG, op1(Ril), 0 },
365 /*c9*/ { "bswap", FALSE, LONG, op1(Ril), 0 },
366 /*ca*/ { "bswap", FALSE, LONG, op1(Ril), 0 },
367 /*cb*/ { "bswap", FALSE, LONG, op1(Ril), 0 },
368 /*cc*/ { "bswap", FALSE, LONG, op1(Ril), 0 },
369 /*cd*/ { "bswap", FALSE, LONG, op1(Ril), 0 },
370 /*ce*/ { "bswap", FALSE, LONG, op1(Ril), 0 },
371 /*cf*/ { "bswap", FALSE, LONG, op1(Ril), 0 },
374 static const struct inst * const db_inst_0f[] = {
393 static const char * const db_Esc92[] = {
394 "fnop", "", "", "", "", "", "", ""
396 static const char * const db_Esc94[] = {
397 "fchs", "fabs", "", "", "ftst", "fxam", "", ""
399 static const char * const db_Esc95[] = {
400 "fld1", "fldl2t","fldl2e","fldpi","fldlg2","fldln2","fldz",""
402 static const char * const db_Esc96[] = {
403 "f2xm1","fyl2x","fptan","fpatan","fxtract","fprem1","fdecstp",
406 static const char * const db_Esc97[] = {
407 "fprem","fyl2xp1","fsqrt","fsincos","frndint","fscale","fsin","fcos"
410 static const char * const db_Esca5[] = {
411 "", "fucompp","", "", "", "", "", ""
414 static const char * const db_Escb4[] = {
415 "fneni","fndisi", "fnclex","fninit","fsetpm", "", "", ""
418 static const char * const db_Esce3[] = {
419 "", "fcompp","", "", "", "", "", ""
422 static const char * const db_Escf4[] = {
423 "fnstsw","", "", "", "", "", "", ""
426 static const struct finst db_Esc8[] = {
427 /*0*/ { "fadd", SNGL, op2(STI,ST), 0 },
428 /*1*/ { "fmul", SNGL, op2(STI,ST), 0 },
429 /*2*/ { "fcom", SNGL, op2(STI,ST), 0 },
430 /*3*/ { "fcomp", SNGL, op2(STI,ST), 0 },
431 /*4*/ { "fsub", SNGL, op2(STI,ST), 0 },
432 /*5*/ { "fsubr", SNGL, op2(STI,ST), 0 },
433 /*6*/ { "fdiv", SNGL, op2(STI,ST), 0 },
434 /*7*/ { "fdivr", SNGL, op2(STI,ST), 0 },
437 static const struct finst db_Esc9[] = {
438 /*0*/ { "fld", SNGL, op1(STI), 0 },
439 /*1*/ { "", NONE, op1(STI), "fxch" },
440 /*2*/ { "fst", SNGL, op1(X), db_Esc92 },
441 /*3*/ { "fstp", SNGL, 0, 0 },
442 /*4*/ { "fldenv", NONE, op1(X), db_Esc94 },
443 /*5*/ { "fldcw", NONE, op1(X), db_Esc95 },
444 /*6*/ { "fnstenv",NONE, op1(X), db_Esc96 },
445 /*7*/ { "fnstcw", NONE, op1(X), db_Esc97 },
448 static const struct finst db_Esca[] = {
449 /*0*/ { "fiadd", LONG, 0, 0 },
450 /*1*/ { "fimul", LONG, 0, 0 },
451 /*2*/ { "ficom", LONG, 0, 0 },
452 /*3*/ { "ficomp", LONG, 0, 0 },
453 /*4*/ { "fisub", LONG, 0, 0 },
454 /*5*/ { "fisubr", LONG, op1(X), db_Esca5 },
455 /*6*/ { "fidiv", LONG, 0, 0 },
456 /*7*/ { "fidivr", LONG, 0, 0 }
459 static const struct finst db_Escb[] = {
460 /*0*/ { "fild", LONG, 0, 0 },
461 /*1*/ { "", NONE, 0, 0 },
462 /*2*/ { "fist", LONG, 0, 0 },
463 /*3*/ { "fistp", LONG, 0, 0 },
464 /*4*/ { "", WORD, op1(X), db_Escb4 },
465 /*5*/ { "fld", EXTR, 0, 0 },
466 /*6*/ { "", WORD, 0, 0 },
467 /*7*/ { "fstp", EXTR, 0, 0 },
470 static const struct finst db_Escc[] = {
471 /*0*/ { "fadd", DBLR, op2(ST,STI), 0 },
472 /*1*/ { "fmul", DBLR, op2(ST,STI), 0 },
473 /*2*/ { "fcom", DBLR, 0, 0 },
474 /*3*/ { "fcomp", DBLR, 0, 0 },
475 /*4*/ { "fsub", DBLR, op2(ST,STI), "fsubr" },
476 /*5*/ { "fsubr", DBLR, op2(ST,STI), "fsub" },
477 /*6*/ { "fdiv", DBLR, op2(ST,STI), "fdivr" },
478 /*7*/ { "fdivr", DBLR, op2(ST,STI), "fdiv" },
481 static const struct finst db_Escd[] = {
482 /*0*/ { "fld", DBLR, op1(STI), "ffree" },
483 /*1*/ { "", NONE, 0, 0 },
484 /*2*/ { "fst", DBLR, op1(STI), 0 },
485 /*3*/ { "fstp", DBLR, op1(STI), 0 },
486 /*4*/ { "frstor", NONE, op1(STI), "fucom" },
487 /*5*/ { "", NONE, op1(STI), "fucomp" },
488 /*6*/ { "fnsave", NONE, 0, 0 },
489 /*7*/ { "fnstsw", NONE, 0, 0 },
492 static const struct finst db_Esce[] = {
493 /*0*/ { "fiadd", WORD, op2(ST,STI), "faddp" },
494 /*1*/ { "fimul", WORD, op2(ST,STI), "fmulp" },
495 /*2*/ { "ficom", WORD, 0, 0 },
496 /*3*/ { "ficomp", WORD, op1(X), db_Esce3 },
497 /*4*/ { "fisub", WORD, op2(ST,STI), "fsubrp" },
498 /*5*/ { "fisubr", WORD, op2(ST,STI), "fsubp" },
499 /*6*/ { "fidiv", WORD, op2(ST,STI), "fdivrp" },
500 /*7*/ { "fidivr", WORD, op2(ST,STI), "fdivp" },
503 static const struct finst db_Escf[] = {
504 /*0*/ { "fild", WORD, 0, 0 },
505 /*1*/ { "", NONE, 0, 0 },
506 /*2*/ { "fist", WORD, 0, 0 },
507 /*3*/ { "fistp", WORD, 0, 0 },
508 /*4*/ { "fbld", NONE, op1(XA), db_Escf4 },
509 /*5*/ { "fild", QUAD, 0, 0 },
510 /*6*/ { "fbstp", NONE, 0, 0 },
511 /*7*/ { "fistp", QUAD, 0, 0 },
514 static const struct finst * const db_Esc_inst[] = {
515 db_Esc8, db_Esc9, db_Esca, db_Escb,
516 db_Escc, db_Escd, db_Esce, db_Escf
519 static const char * const db_Grp1[] = {
530 static const char * const db_Grp2[] = {
541 static const struct inst db_Grp3[] = {
542 { "test", TRUE, NONE, op2(I,E), 0 },
543 { "test", TRUE, NONE, op2(I,E), 0 },
544 { "not", TRUE, NONE, op1(E), 0 },
545 { "neg", TRUE, NONE, op1(E), 0 },
546 { "mul", TRUE, NONE, op2(E,A), 0 },
547 { "imul", TRUE, NONE, op2(E,A), 0 },
548 { "div", TRUE, NONE, op2(E,A), 0 },
549 { "idiv", TRUE, NONE, op2(E,A), 0 },
552 static const struct inst db_Grp4[] = {
553 { "inc", TRUE, BYTE, op1(E), 0 },
554 { "dec", TRUE, BYTE, op1(E), 0 },
555 { "", TRUE, NONE, 0, 0 },
556 { "", TRUE, NONE, 0, 0 },
557 { "", TRUE, NONE, 0, 0 },
558 { "", TRUE, NONE, 0, 0 },
559 { "", TRUE, NONE, 0, 0 },
560 { "", TRUE, NONE, 0, 0 }
563 static const struct inst db_Grp5[] = {
564 { "inc", TRUE, LONG, op1(E), 0 },
565 { "dec", TRUE, LONG, op1(E), 0 },
566 { "call", TRUE, LONG, op1(Eind),0 },
567 { "lcall", TRUE, LONG, op1(Eind),0 },
568 { "jmp", TRUE, LONG, op1(Eind),0 },
569 { "ljmp", TRUE, LONG, op1(Eind),0 },
570 { "push", TRUE, LONG, op1(E), 0 },
571 { "", TRUE, NONE, 0, 0 }
574 static const struct inst db_inst_table[256] = {
575 /*00*/ { "add", TRUE, BYTE, op2(R, E), 0 },
576 /*01*/ { "add", TRUE, LONG, op2(R, E), 0 },
577 /*02*/ { "add", TRUE, BYTE, op2(E, R), 0 },
578 /*03*/ { "add", TRUE, LONG, op2(E, R), 0 },
579 /*04*/ { "add", FALSE, BYTE, op2(I, A), 0 },
580 /*05*/ { "add", FALSE, LONG, op2(Is, A), 0 },
581 /*06*/ { "push", FALSE, NONE, op1(Si), 0 },
582 /*07*/ { "pop", FALSE, NONE, op1(Si), 0 },
584 /*08*/ { "or", TRUE, BYTE, op2(R, E), 0 },
585 /*09*/ { "or", TRUE, LONG, op2(R, E), 0 },
586 /*0a*/ { "or", TRUE, BYTE, op2(E, R), 0 },
587 /*0b*/ { "or", TRUE, LONG, op2(E, R), 0 },
588 /*0c*/ { "or", FALSE, BYTE, op2(I, A), 0 },
589 /*0d*/ { "or", FALSE, LONG, op2(I, A), 0 },
590 /*0e*/ { "push", FALSE, NONE, op1(Si), 0 },
591 /*0f*/ { "", FALSE, NONE, 0, 0 },
593 /*10*/ { "adc", TRUE, BYTE, op2(R, E), 0 },
594 /*11*/ { "adc", TRUE, LONG, op2(R, E), 0 },
595 /*12*/ { "adc", TRUE, BYTE, op2(E, R), 0 },
596 /*13*/ { "adc", TRUE, LONG, op2(E, R), 0 },
597 /*14*/ { "adc", FALSE, BYTE, op2(I, A), 0 },
598 /*15*/ { "adc", FALSE, LONG, op2(Is, A), 0 },
599 /*16*/ { "push", FALSE, NONE, op1(Si), 0 },
600 /*17*/ { "pop", FALSE, NONE, op1(Si), 0 },
602 /*18*/ { "sbb", TRUE, BYTE, op2(R, E), 0 },
603 /*19*/ { "sbb", TRUE, LONG, op2(R, E), 0 },
604 /*1a*/ { "sbb", TRUE, BYTE, op2(E, R), 0 },
605 /*1b*/ { "sbb", TRUE, LONG, op2(E, R), 0 },
606 /*1c*/ { "sbb", FALSE, BYTE, op2(I, A), 0 },
607 /*1d*/ { "sbb", FALSE, LONG, op2(Is, A), 0 },
608 /*1e*/ { "push", FALSE, NONE, op1(Si), 0 },
609 /*1f*/ { "pop", FALSE, NONE, op1(Si), 0 },
611 /*20*/ { "and", TRUE, BYTE, op2(R, E), 0 },
612 /*21*/ { "and", TRUE, LONG, op2(R, E), 0 },
613 /*22*/ { "and", TRUE, BYTE, op2(E, R), 0 },
614 /*23*/ { "and", TRUE, LONG, op2(E, R), 0 },
615 /*24*/ { "and", FALSE, BYTE, op2(I, A), 0 },
616 /*25*/ { "and", FALSE, LONG, op2(I, A), 0 },
617 /*26*/ { "", FALSE, NONE, 0, 0 },
618 /*27*/ { "daa", FALSE, NONE, 0, 0 },
620 /*28*/ { "sub", TRUE, BYTE, op2(R, E), 0 },
621 /*29*/ { "sub", TRUE, LONG, op2(R, E), 0 },
622 /*2a*/ { "sub", TRUE, BYTE, op2(E, R), 0 },
623 /*2b*/ { "sub", TRUE, LONG, op2(E, R), 0 },
624 /*2c*/ { "sub", FALSE, BYTE, op2(I, A), 0 },
625 /*2d*/ { "sub", FALSE, LONG, op2(Is, A), 0 },
626 /*2e*/ { "", FALSE, NONE, 0, 0 },
627 /*2f*/ { "das", FALSE, NONE, 0, 0 },
629 /*30*/ { "xor", TRUE, BYTE, op2(R, E), 0 },
630 /*31*/ { "xor", TRUE, LONG, op2(R, E), 0 },
631 /*32*/ { "xor", TRUE, BYTE, op2(E, R), 0 },
632 /*33*/ { "xor", TRUE, LONG, op2(E, R), 0 },
633 /*34*/ { "xor", FALSE, BYTE, op2(I, A), 0 },
634 /*35*/ { "xor", FALSE, LONG, op2(I, A), 0 },
635 /*36*/ { "", FALSE, NONE, 0, 0 },
636 /*37*/ { "aaa", FALSE, NONE, 0, 0 },
638 /*38*/ { "cmp", TRUE, BYTE, op2(R, E), 0 },
639 /*39*/ { "cmp", TRUE, LONG, op2(R, E), 0 },
640 /*3a*/ { "cmp", TRUE, BYTE, op2(E, R), 0 },
641 /*3b*/ { "cmp", TRUE, LONG, op2(E, R), 0 },
642 /*3c*/ { "cmp", FALSE, BYTE, op2(I, A), 0 },
643 /*3d*/ { "cmp", FALSE, LONG, op2(Is, A), 0 },
644 /*3e*/ { "", FALSE, NONE, 0, 0 },
645 /*3f*/ { "aas", FALSE, NONE, 0, 0 },
647 /*40*/ { "rex", FALSE, NONE, 0, 0 },
648 /*41*/ { "rex.b", FALSE, NONE, 0, 0 },
649 /*42*/ { "rex.x", FALSE, NONE, 0, 0 },
650 /*43*/ { "rex.xb", FALSE, NONE, 0, 0 },
651 /*44*/ { "rex.r", FALSE, NONE, 0, 0 },
652 /*45*/ { "rex.rb", FALSE, NONE, 0, 0 },
653 /*46*/ { "rex.rx", FALSE, NONE, 0, 0 },
654 /*47*/ { "rex.rxb", FALSE, NONE, 0, 0 },
656 /*48*/ { "rex.w", FALSE, NONE, 0, 0 },
657 /*49*/ { "rex.wb", FALSE, NONE, 0, 0 },
658 /*4a*/ { "rex.wx", FALSE, NONE, 0, 0 },
659 /*4b*/ { "rex.wxb", FALSE, NONE, 0, 0 },
660 /*4c*/ { "rex.wr", FALSE, NONE, 0, 0 },
661 /*4d*/ { "rex.wrb", FALSE, NONE, 0, 0 },
662 /*4e*/ { "rex.wrx", FALSE, NONE, 0, 0 },
663 /*4f*/ { "rex.wrxb", FALSE, NONE, 0, 0 },
665 /*50*/ { "push", FALSE, LONG, op1(Ri), 0 },
666 /*51*/ { "push", FALSE, LONG, op1(Ri), 0 },
667 /*52*/ { "push", FALSE, LONG, op1(Ri), 0 },
668 /*53*/ { "push", FALSE, LONG, op1(Ri), 0 },
669 /*54*/ { "push", FALSE, LONG, op1(Ri), 0 },
670 /*55*/ { "push", FALSE, LONG, op1(Ri), 0 },
671 /*56*/ { "push", FALSE, LONG, op1(Ri), 0 },
672 /*57*/ { "push", FALSE, LONG, op1(Ri), 0 },
674 /*58*/ { "pop", FALSE, LONG, op1(Ri), 0 },
675 /*59*/ { "pop", FALSE, LONG, op1(Ri), 0 },
676 /*5a*/ { "pop", FALSE, LONG, op1(Ri), 0 },
677 /*5b*/ { "pop", FALSE, LONG, op1(Ri), 0 },
678 /*5c*/ { "pop", FALSE, LONG, op1(Ri), 0 },
679 /*5d*/ { "pop", FALSE, LONG, op1(Ri), 0 },
680 /*5e*/ { "pop", FALSE, LONG, op1(Ri), 0 },
681 /*5f*/ { "pop", FALSE, LONG, op1(Ri), 0 },
683 /*60*/ { "pusha", FALSE, LONG, 0, 0 },
684 /*61*/ { "popa", FALSE, LONG, 0, 0 },
685 /*62*/ { "bound", TRUE, LONG, op2(E, R), 0 },
686 /*63*/ { "movslq", TRUE, NONE, op2(EL,R), 0 },
688 /*64*/ { "", FALSE, NONE, 0, 0 },
689 /*65*/ { "", FALSE, NONE, 0, 0 },
690 /*66*/ { "", FALSE, NONE, 0, 0 },
691 /*67*/ { "", FALSE, NONE, 0, 0 },
693 /*68*/ { "push", FALSE, LONG, op1(I), 0 },
694 /*69*/ { "imul", TRUE, LONG, op3(I,E,R), 0 },
695 /*6a*/ { "push", FALSE, LONG, op1(Ibs), 0 },
696 /*6b*/ { "imul", TRUE, LONG, op3(Ibs,E,R),0 },
697 /*6c*/ { "ins", FALSE, BYTE, op2(DX, DI), 0 },
698 /*6d*/ { "ins", FALSE, LONG, op2(DX, DI), 0 },
699 /*6e*/ { "outs", FALSE, BYTE, op2(SI, DX), 0 },
700 /*6f*/ { "outs", FALSE, LONG, op2(SI, DX), 0 },
702 /*70*/ { "jo", FALSE, NONE, op1(Db), 0 },
703 /*71*/ { "jno", FALSE, NONE, op1(Db), 0 },
704 /*72*/ { "jb", FALSE, NONE, op1(Db), 0 },
705 /*73*/ { "jnb", FALSE, NONE, op1(Db), 0 },
706 /*74*/ { "jz", FALSE, NONE, op1(Db), 0 },
707 /*75*/ { "jnz", FALSE, NONE, op1(Db), 0 },
708 /*76*/ { "jbe", FALSE, NONE, op1(Db), 0 },
709 /*77*/ { "jnbe", FALSE, NONE, op1(Db), 0 },
711 /*78*/ { "js", FALSE, NONE, op1(Db), 0 },
712 /*79*/ { "jns", FALSE, NONE, op1(Db), 0 },
713 /*7a*/ { "jp", FALSE, NONE, op1(Db), 0 },
714 /*7b*/ { "jnp", FALSE, NONE, op1(Db), 0 },
715 /*7c*/ { "jl", FALSE, NONE, op1(Db), 0 },
716 /*7d*/ { "jnl", FALSE, NONE, op1(Db), 0 },
717 /*7e*/ { "jle", FALSE, NONE, op1(Db), 0 },
718 /*7f*/ { "jnle", FALSE, NONE, op1(Db), 0 },
720 /*80*/ { "", TRUE, BYTE, op2(I, E), db_Grp1 },
721 /*81*/ { "", TRUE, LONG, op2(I, E), db_Grp1 },
722 /*82*/ { "", TRUE, BYTE, op2(I, E), db_Grp1 },
723 /*83*/ { "", TRUE, LONG, op2(Ibs,E), db_Grp1 },
724 /*84*/ { "test", TRUE, BYTE, op2(R, E), 0 },
725 /*85*/ { "test", TRUE, LONG, op2(R, E), 0 },
726 /*86*/ { "xchg", TRUE, BYTE, op2(R, E), 0 },
727 /*87*/ { "xchg", TRUE, LONG, op2(R, E), 0 },
729 /*88*/ { "mov", TRUE, BYTE, op2(R, E), 0 },
730 /*89*/ { "mov", TRUE, LONG, op2(R, E), 0 },
731 /*8a*/ { "mov", TRUE, BYTE, op2(E, R), 0 },
732 /*8b*/ { "mov", TRUE, LONG, op2(E, R), 0 },
733 /*8c*/ { "mov", TRUE, NONE, op2(S, Ew), 0 },
734 /*8d*/ { "lea", TRUE, LONG, op2(E, R), 0 },
735 /*8e*/ { "mov", TRUE, NONE, op2(Ew, S), 0 },
736 /*8f*/ { "pop", TRUE, LONG, op1(E), 0 },
738 /*90*/ { "nop", FALSE, NONE, 0, 0 },
739 /*91*/ { "xchg", FALSE, LONG, op2(A, Ri), 0 },
740 /*92*/ { "xchg", FALSE, LONG, op2(A, Ri), 0 },
741 /*93*/ { "xchg", FALSE, LONG, op2(A, Ri), 0 },
742 /*94*/ { "xchg", FALSE, LONG, op2(A, Ri), 0 },
743 /*95*/ { "xchg", FALSE, LONG, op2(A, Ri), 0 },
744 /*96*/ { "xchg", FALSE, LONG, op2(A, Ri), 0 },
745 /*97*/ { "xchg", FALSE, LONG, op2(A, Ri), 0 },
747 /*98*/ { "cbw", FALSE, SDEP, 0, "cwde" }, /* cbw/cwde */
748 /*99*/ { "cwd", FALSE, SDEP, 0, "cdq" }, /* cwd/cdq */
749 /*9a*/ { "lcall", FALSE, NONE, op1(OS), 0 },
750 /*9b*/ { "wait", FALSE, NONE, 0, 0 },
751 /*9c*/ { "pushf", FALSE, LONG, 0, 0 },
752 /*9d*/ { "popf", FALSE, LONG, 0, 0 },
753 /*9e*/ { "sahf", FALSE, NONE, 0, 0 },
754 /*9f*/ { "lahf", FALSE, NONE, 0, 0 },
756 /*a0*/ { "mov", FALSE, BYTE, op2(O, A), 0 },
757 /*a1*/ { "mov", FALSE, LONG, op2(O, A), 0 },
758 /*a2*/ { "mov", FALSE, BYTE, op2(A, O), 0 },
759 /*a3*/ { "mov", FALSE, LONG, op2(A, O), 0 },
760 /*a4*/ { "movs", FALSE, BYTE, op2(SI,DI), 0 },
761 /*a5*/ { "movs", FALSE, LONG, op2(SI,DI), 0 },
762 /*a6*/ { "cmps", FALSE, BYTE, op2(SI,DI), 0 },
763 /*a7*/ { "cmps", FALSE, LONG, op2(SI,DI), 0 },
765 /*a8*/ { "test", FALSE, BYTE, op2(I, A), 0 },
766 /*a9*/ { "test", FALSE, LONG, op2(I, A), 0 },
767 /*aa*/ { "stos", FALSE, BYTE, op1(DI), 0 },
768 /*ab*/ { "stos", FALSE, LONG, op1(DI), 0 },
769 /*ac*/ { "lods", FALSE, BYTE, op1(SI), 0 },
770 /*ad*/ { "lods", FALSE, LONG, op1(SI), 0 },
771 /*ae*/ { "scas", FALSE, BYTE, op1(SI), 0 },
772 /*af*/ { "scas", FALSE, LONG, op1(SI), 0 },
774 /*b0*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 },
775 /*b1*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 },
776 /*b2*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 },
777 /*b3*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 },
778 /*b4*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 },
779 /*b5*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 },
780 /*b6*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 },
781 /*b7*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 },
783 /*b8*/ { "mov", FALSE, LONG, op2(Ilq, Ri), 0 },
784 /*b9*/ { "mov", FALSE, LONG, op2(Ilq, Ri), 0 },
785 /*ba*/ { "mov", FALSE, LONG, op2(Ilq, Ri), 0 },
786 /*bb*/ { "mov", FALSE, LONG, op2(Ilq, Ri), 0 },
787 /*bc*/ { "mov", FALSE, LONG, op2(Ilq, Ri), 0 },
788 /*bd*/ { "mov", FALSE, LONG, op2(Ilq, Ri), 0 },
789 /*be*/ { "mov", FALSE, LONG, op2(Ilq, Ri), 0 },
790 /*bf*/ { "mov", FALSE, LONG, op2(Ilq, Ri), 0 },
792 /*c0*/ { "", TRUE, BYTE, op2(Ib, E), db_Grp2 },
793 /*c1*/ { "", TRUE, LONG, op2(Ib, E), db_Grp2 },
794 /*c2*/ { "ret", FALSE, NONE, op1(Iw), 0 },
795 /*c3*/ { "ret", FALSE, NONE, 0, 0 },
796 /*c4*/ { "les", TRUE, LONG, op2(E, R), 0 },
797 /*c5*/ { "lds", TRUE, LONG, op2(E, R), 0 },
798 /*c6*/ { "mov", TRUE, BYTE, op2(I, E), 0 },
799 /*c7*/ { "mov", TRUE, LONG, op2(I, E), 0 },
801 /*c8*/ { "enter", FALSE, NONE, op2(Iw, Ib), 0 },
802 /*c9*/ { "leave", FALSE, NONE, 0, 0 },
803 /*ca*/ { "lret", FALSE, NONE, op1(Iw), 0 },
804 /*cb*/ { "lret", FALSE, NONE, 0, 0 },
805 /*cc*/ { "int", FALSE, NONE, op1(o3), 0 },
806 /*cd*/ { "int", FALSE, NONE, op1(Ib), 0 },
807 /*ce*/ { "into", FALSE, NONE, 0, 0 },
808 /*cf*/ { "iret", FALSE, NONE, 0, 0 },
810 /*d0*/ { "", TRUE, BYTE, op2(o1, E), db_Grp2 },
811 /*d1*/ { "", TRUE, LONG, op2(o1, E), db_Grp2 },
812 /*d2*/ { "", TRUE, BYTE, op2(CL, E), db_Grp2 },
813 /*d3*/ { "", TRUE, LONG, op2(CL, E), db_Grp2 },
814 /*d4*/ { "aam", FALSE, NONE, op1(Iba), 0 },
815 /*d5*/ { "aad", FALSE, NONE, op1(Iba), 0 },
816 /*d6*/ { ".byte\t0xd6", FALSE, NONE, 0, 0 },
817 /*d7*/ { "xlat", FALSE, BYTE, op1(BX), 0 },
819 /*d8*/ { "", TRUE, NONE, 0, db_Esc8 },
820 /*d9*/ { "", TRUE, NONE, 0, db_Esc9 },
821 /*da*/ { "", TRUE, NONE, 0, db_Esca },
822 /*db*/ { "", TRUE, NONE, 0, db_Escb },
823 /*dc*/ { "", TRUE, NONE, 0, db_Escc },
824 /*dd*/ { "", TRUE, NONE, 0, db_Escd },
825 /*de*/ { "", TRUE, NONE, 0, db_Esce },
826 /*df*/ { "", TRUE, NONE, 0, db_Escf },
828 /*e0*/ { "loopne",FALSE, NONE, op1(Db), 0 },
829 /*e1*/ { "loope", FALSE, NONE, op1(Db), 0 },
830 /*e2*/ { "loop", FALSE, NONE, op1(Db), 0 },
831 /*e3*/ { "jcxz", FALSE, SDEP, op1(Db), "jecxz" },
832 /*e4*/ { "in", FALSE, BYTE, op2(Ib, A), 0 },
833 /*e5*/ { "in", FALSE, LONG, op2(Ib, A) , 0 },
834 /*e6*/ { "out", FALSE, BYTE, op2(A, Ib), 0 },
835 /*e7*/ { "out", FALSE, LONG, op2(A, Ib) , 0 },
837 /*e8*/ { "call", FALSE, NONE, op1(Dl), 0 },
838 /*e9*/ { "jmp", FALSE, NONE, op1(Dl), 0 },
839 /*ea*/ { "ljmp", FALSE, NONE, op1(OS), 0 },
840 /*eb*/ { "jmp", FALSE, NONE, op1(Db), 0 },
841 /*ec*/ { "in", FALSE, BYTE, op2(DX, A), 0 },
842 /*ed*/ { "in", FALSE, LONG, op2(DX, A) , 0 },
843 /*ee*/ { "out", FALSE, BYTE, op2(A, DX), 0 },
844 /*ef*/ { "out", FALSE, LONG, op2(A, DX) , 0 },
846 /*f0*/ { "", FALSE, NONE, 0, 0 },
847 /*f1*/ { ".byte\t0xf1", FALSE, NONE, 0, 0 },
848 /*f2*/ { "", FALSE, NONE, 0, 0 },
849 /*f3*/ { "", FALSE, NONE, 0, 0 },
850 /*f4*/ { "hlt", FALSE, NONE, 0, 0 },
851 /*f5*/ { "cmc", FALSE, NONE, 0, 0 },
852 /*f6*/ { "", TRUE, BYTE, 0, db_Grp3 },
853 /*f7*/ { "", TRUE, LONG, 0, db_Grp3 },
855 /*f8*/ { "clc", FALSE, NONE, 0, 0 },
856 /*f9*/ { "stc", FALSE, NONE, 0, 0 },
857 /*fa*/ { "cli", FALSE, NONE, 0, 0 },
858 /*fb*/ { "sti", FALSE, NONE, 0, 0 },
859 /*fc*/ { "cld", FALSE, NONE, 0, 0 },
860 /*fd*/ { "std", FALSE, NONE, 0, 0 },
861 /*fe*/ { "", TRUE, NONE, 0, db_Grp4 },
862 /*ff*/ { "", TRUE, NONE, 0, db_Grp5 },
865 static const struct inst db_bad_inst =
866 { "???", FALSE, NONE, 0, 0 }
869 #define f_mod(rex, byte) ((byte)>>6)
870 #define f_reg(rex, byte) ((((byte)>>3)&0x7) | (rex & REX_R ? 0x8 : 0x0))
871 #define f_rm(rex, byte) (((byte)&0x7) | (rex & REX_B ? 0x8 : 0x0))
873 #define sib_ss(rex, byte) ((byte)>>6)
874 #define sib_index(rex, byte) ((((byte)>>3)&0x7) | (rex & REX_X ? 0x8 : 0x0))
875 #define sib_base(rex, byte) (((byte)&0x7) | (rex & REX_B ? 0x8 : 0x0))
878 int is_reg; /* if reg, reg number is in 'disp' */
885 static const char * const db_reg[2][4][16] = {
887 {{"%al", "%cl", "%dl", "%bl", "%ah", "%ch", "%dh", "%bh",
888 "%r8b", "%r9b", "%r10b", "%r11b", "%r12b", "%r13b", "%r14b", "%r15b" },
889 { "%ax", "%cx", "%dx", "%bx", "%sp", "%bp", "%si", "%di",
890 "%r8w", "%r9w", "%r10w", "%r11w", "%r12w", "%r13w", "%r14w", "%r15w" },
891 { "%eax", "%ecx", "%edx", "%ebx", "%esp", "%ebp", "%esi", "%edi",
892 "%r8d", "%r9d", "%r10d", "%r11d", "%r12d", "%r13d", "%r14d", "%r15d" },
893 { "%rax", "%rcx", "%rdx", "%rbx", "%rsp", "%rbp", "%rsi", "%rdi",
894 "%r8", "%r9", "%r10", "%r11", "%r12", "%r13", "%r14", "%r15" }},
896 {{"%al", "%cl", "%dl", "%bl", "%spl", "%bpl", "%sil", "%dil",
897 "%r8b", "%r9b", "%r10b", "%r11b", "%r12b", "%r13b", "%r14b", "%r15b" },
898 { "%ax", "%cx", "%dx", "%bx", "%sp", "%bp", "%si", "%di",
899 "%r8w", "%r9w", "%r10w", "%r11w", "%r12w", "%r13w", "%r14w", "%r15w" },
900 { "%eax", "%ecx", "%edx", "%ebx", "%esp", "%ebp", "%esi", "%edi",
901 "%r8d", "%r9d", "%r10d", "%r11d", "%r12d", "%r13d", "%r14d", "%r15d" },
902 { "%rax", "%rcx", "%rdx", "%rbx", "%rsp", "%rbp", "%rsi", "%rdi",
903 "%r8", "%r9", "%r10", "%r11", "%r12", "%r13", "%r14", "%r15" }}
906 static const char * const db_seg_reg[8] = {
907 "%es", "%cs", "%ss", "%ds", "%fs", "%gs", "", ""
911 * lengths for size attributes
913 static const int db_lengths[] = {
923 #define get_value_inc(result, loc, size, is_signed) \
924 result = db_get_value((loc), (size), (is_signed)); \
928 db_disasm_esc(db_addr_t loc, int inst, int rex, int short_addr,
929 int size, const char *seg);
930 static void db_print_address(const char *seg, int size, int rex,
931 struct i_addr *addrp);
933 db_read_address(db_addr_t loc, int short_addr, int rex, int regmodrm,
934 struct i_addr *addrp);
937 * Read address at location and return updated location.
940 db_read_address(db_addr_t loc, int short_addr, int rex, int regmodrm,
941 struct i_addr *addrp)
943 int mod, rm, sib, index, disp, size, have_sib;
945 mod = f_mod(rex, regmodrm);
946 rm = f_rm(rex, regmodrm);
949 addrp->is_reg = TRUE;
953 addrp->is_reg = FALSE;
961 if ((rm & 0x7) == 4) {
962 get_value_inc(sib, loc, 1, FALSE);
963 rm = sib_base(rex, sib);
964 index = sib_index(rex, sib);
966 addrp->index = db_reg[1][size][index];
967 addrp->ss = sib_ss(rex, sib);
975 get_value_inc(addrp->disp, loc, 4, FALSE);
979 addrp->base = "%eip";
981 addrp->base = "%rip";
984 addrp->base = db_reg[1][size][rm];
989 get_value_inc(disp, loc, 1, TRUE);
991 addrp->base = db_reg[1][size][rm];
995 get_value_inc(disp, loc, 4, FALSE);
997 addrp->base = db_reg[1][size][rm];
1004 db_print_address(const char *seg, int size, int rex, struct i_addr *addrp)
1006 if (addrp->is_reg) {
1007 db_printf("%s", db_reg[rex != 0 ? 1 : 0][(size == LONG && (rex & REX_W)) ? QUAD : size][addrp->disp]);
1012 db_printf("%s:", seg);
1015 if (addrp->disp != 0 || (addrp->base == 0 && addrp->index == 0))
1016 db_printsym((db_addr_t)addrp->disp, DB_STGY_ANY);
1017 if (addrp->base != 0 || addrp->index != 0) {
1020 db_printf("%s", addrp->base);
1022 db_printf(",%s,%d", addrp->index, 1<<addrp->ss);
1028 * Disassemble floating-point ("escape") instruction
1029 * and return updated location.
1032 db_disasm_esc(db_addr_t loc, int inst, int rex, int short_addr, int size,
1036 const struct finst * fp;
1038 struct i_addr address;
1041 get_value_inc(regmodrm, loc, 1, FALSE);
1042 fp = &db_Esc_inst[inst - 0xd8][f_reg(rex, regmodrm)];
1043 mod = f_mod(rex, regmodrm);
1045 if (*fp->f_name == '\0') {
1046 db_printf("<bad instruction>");
1050 * Normal address modes.
1052 loc = db_read_address(loc, short_addr, rex, regmodrm, &address);
1053 db_printf("%s", fp->f_name);
1054 switch(fp->f_size) {
1077 db_print_address(seg, BYTE, rex, &address);
1081 * 'reg-reg' - special formats
1083 switch (fp->f_rrmode) {
1085 name = (fp->f_rrname) ? fp->f_rrname : fp->f_name;
1086 db_printf("%s\t%%st,%%st(%d)",name,f_rm(rex, regmodrm));
1089 name = (fp->f_rrname) ? fp->f_rrname : fp->f_name;
1090 db_printf("%s\t%%st(%d),%%st",name, f_rm(rex, regmodrm));
1093 name = (fp->f_rrname) ? fp->f_rrname : fp->f_name;
1094 db_printf("%s\t%%st(%d)",name, f_rm(rex, regmodrm));
1097 name = ((const char * const *)fp->f_rrname)[f_rm(rex, regmodrm)];
1100 db_printf("%s", name);
1103 name = ((const char * const *)fp->f_rrname)[f_rm(rex, regmodrm)];
1106 db_printf("%s\t%%ax", name);
1110 db_printf("<bad instruction>");
1119 * Disassemble instruction at 'loc'. 'altfmt' specifies an
1120 * (optional) alternate format. Return address of start of
1124 db_disasm(db_addr_t loc, boolean_t altfmt, db_regs_t *dummy)
1130 const struct inst * ip;
1131 const char * i_name;
1143 struct i_addr address;
1145 get_value_inc(inst, loc, 1, FALSE);
1156 case 0x66: /* data16 */
1184 db_printf("repne ");
1187 db_printf("repe "); /* XXX repe VS rep */
1193 if (inst >= 0x40 && inst < 0x50) {
1198 get_value_inc(inst, loc, 1, FALSE);
1202 if (inst >= 0xd8 && inst <= 0xdf) {
1203 loc = db_disasm_esc(loc, inst, rex, short_addr, size, seg);
1209 get_value_inc(inst, loc, 1, FALSE);
1210 ip = db_inst_0f[inst>>4];
1219 ip = &db_inst_table[inst];
1221 if (ip->i_has_modrm) {
1222 get_value_inc(regmodrm, loc, 1, FALSE);
1223 loc = db_read_address(loc, short_addr, rex, regmodrm, &address);
1226 i_name = ip->i_name;
1227 i_size = ip->i_size;
1228 i_mode = ip->i_mode;
1230 if (ip->i_extra == db_Grp1 || ip->i_extra == db_Grp2 ||
1231 ip->i_extra == db_Grp6 || ip->i_extra == db_Grp7 ||
1232 ip->i_extra == db_Grp8 || ip->i_extra == db_Grp9) {
1233 i_name = ((const char * const *)ip->i_extra)[f_reg(rex, regmodrm)];
1235 else if (ip->i_extra == db_Grp3) {
1237 ip = &ip[f_reg(rex, regmodrm)];
1238 i_name = ip->i_name;
1239 i_mode = ip->i_mode;
1241 else if (ip->i_extra == db_Grp4 || ip->i_extra == db_Grp5) {
1243 ip = &ip[f_reg(rex, regmodrm)];
1244 i_name = ip->i_name;
1245 i_mode = ip->i_mode;
1246 i_size = ip->i_size;
1249 if (i_size == SDEP) {
1251 db_printf("%s", i_name);
1253 db_printf("%s", (const char *)ip->i_extra);
1256 db_printf("%s", i_name);
1257 if ((inst >= 0x50 && inst <= 0x5f) || inst == 0x68 || inst == 0x6a) {
1261 if (i_size != NONE) {
1262 if (i_size == BYTE) {
1266 else if (i_size == WORD) {
1270 else if (size == WORD)
1283 i_mode >>= 8, first = FALSE)
1288 switch (i_mode & 0xFF) {
1291 db_print_address(seg, size, rex, &address);
1296 db_print_address(seg, size, rex, &address);
1300 db_print_address(seg, (rex & REX_W) ? QUAD : LONG, rex, &address);
1304 db_print_address(seg, LONG, 0, &address);
1308 db_print_address(seg, WORD, rex, &address);
1312 db_print_address(seg, BYTE, rex, &address);
1316 db_printf("%s", db_reg[rex != 0 ? 1 : 0][(size == LONG && (rex & REX_W)) ? QUAD : size][f_reg(rex, regmodrm)]);
1320 db_printf("%s", db_reg[rex != 0 ? 1 : 0][WORD][f_reg(rex, regmodrm)]);
1324 db_printf("%s", db_reg[0][QUAD][f_rm(rex, inst)]);
1328 db_printf("%s", db_reg[rex != 0 ? 1 : 0][(rex & REX_R) ? QUAD : LONG][f_rm(rex, inst)]);
1332 db_printf("%s", db_seg_reg[f_reg(rex, regmodrm)]);
1336 db_printf("%s", db_seg_reg[f_reg(rex, inst)]);
1340 db_printf("%s", db_reg[rex != 0 ? 1 : 0][size][0]); /* acc */
1345 db_printf("%s:", seg);
1346 db_printf("(%s)", short_addr ? "%bx" : "%ebx");
1359 db_printf("%s:", seg);
1360 db_printf("(%s)", short_addr ? "%si" : "%rsi");
1364 db_printf("%%es:(%s)", short_addr ? "%di" : "%rdi");
1368 db_printf("%%cr%d", f_reg(rex, regmodrm));
1372 db_printf("%%dr%d", f_reg(rex, regmodrm));
1376 db_printf("%%tr%d", f_reg(rex, regmodrm));
1380 len = db_lengths[size];
1381 get_value_inc(imm, loc, len, FALSE);
1382 db_printf("$%#r", imm);
1386 len = db_lengths[(size == LONG && (rex & REX_W)) ? QUAD : size];
1387 get_value_inc(imm, loc, len, FALSE);
1388 db_printf("$%+#r", imm);
1392 get_value_inc(imm, loc, 1, FALSE);
1393 db_printf("$%#r", imm);
1397 get_value_inc(imm, loc, 1, FALSE);
1399 db_printf("$%#r", imm);
1403 get_value_inc(imm, loc, 1, TRUE);
1406 db_printf("$%+#r", imm);
1410 get_value_inc(imm, loc, 2, FALSE);
1411 db_printf("$%#r", imm);
1415 len = db_lengths[rex & REX_W ? QUAD : LONG];
1416 get_value_inc(imm64, loc, len, FALSE);
1417 db_printf("$%#lr", imm64);
1421 len = (short_addr ? 2 : 4);
1422 get_value_inc(displ, loc, len, FALSE);
1424 db_printf("%s:%+#r",seg, displ);
1426 db_printsym((db_addr_t)displ, DB_STGY_ANY);
1430 get_value_inc(displ, loc, 1, TRUE);
1434 db_printsym((db_addr_t)displ, DB_STGY_XTRN);
1438 len = db_lengths[(size == LONG && (rex & REX_W)) ? QUAD : size];
1439 get_value_inc(displ, loc, len, FALSE);
1443 db_printsym((db_addr_t)displ, DB_STGY_XTRN);
1455 len = db_lengths[size];
1456 get_value_inc(imm, loc, len, FALSE); /* offset */
1457 get_value_inc(imm2, loc, 2, FALSE); /* segment */
1458 db_printf("$%#r,%#r", imm2, imm);