1 /*-
2 * Mach Operating System
3 * Copyright (c) 1991,1990 Carnegie Mellon University
4 * All Rights Reserved.
5 *
6 * Permission to use, copy, modify and distribute this software and its
7 * documentation is hereby granted, provided that both the copyright
8 * notice and this permission notice appear in all copies of the
9 * software, derivative works or modified versions, and any portions
10 * thereof, and that both notices appear in supporting documentation.
11 *
12 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS
13 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
14 * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
15 *
16 * Carnegie Mellon requests users of this software to return to
17 *
18 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
19 * School of Computer Science
20 * Carnegie Mellon University
21 * Pittsburgh PA 15213-3890
22 *
23 * any improvements or extensions that they make and grant Carnegie the
24 * rights to redistribute these changes.
25 */
26
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD: releng/10.0/sys/amd64/amd64/db_disasm.c 255192 2013-09-03 21:21:47Z jhb $");
29
30 /*
31 * Instruction disassembler.
32 */
33 #include <sys/param.h>
34 #include <sys/libkern.h>
35
36 #include <ddb/ddb.h>
37 #include <ddb/db_access.h>
38 #include <ddb/db_sym.h>
39
40 /*
41 * Size attributes
42 */
43 #define BYTE 0
44 #define WORD 1
45 #define LONG 2
46 #define QUAD 3
47 #define SNGL 4
48 #define DBLR 5
49 #define EXTR 6
50 #define SDEP 7
51 #define ADEP 8
52 #define ESC 9
53 #define NONE 10
54
55 /*
56 * REX prefix and bits
57 */
58 #define REX_B 1
59 #define REX_X 2
60 #define REX_R 4
61 #define REX_W 8
62 #define REX 0x40
63
64 /*
65 * Addressing modes
66 */
67 #define E 1 /* general effective address */
68 #define Eind 2 /* indirect address (jump, call) */
69 #define Ew 3 /* address, word size */
70 #define Eb 4 /* address, byte size */
71 #define R 5 /* register, in 'reg' field */
72 #define Rw 6 /* word register, in 'reg' field */
73 #define Rq 39 /* quad register, in 'reg' field */
74 #define Ri 7 /* register in instruction */
75 #define S 8 /* segment reg, in 'reg' field */
76 #define Si 9 /* segment reg, in instruction */
77 #define A 10 /* accumulator */
78 #define BX 11 /* (bx) */
79 #define CL 12 /* cl, for shifts */
80 #define DX 13 /* dx, for IO */
81 #define SI 14 /* si */
82 #define DI 15 /* di */
83 #define CR 16 /* control register */
84 #define DR 17 /* debug register */
85 #define TR 18 /* test register */
86 #define I 19 /* immediate, unsigned */
87 #define Is 20 /* immediate, signed */
88 #define Ib 21 /* byte immediate, unsigned */
89 #define Ibs 22 /* byte immediate, signed */
90 #define Iw 23 /* word immediate, unsigned */
91 #define Ilq 24 /* long/quad immediate, unsigned */
92 #define O 25 /* direct address */
93 #define Db 26 /* byte displacement from EIP */
94 #define Dl 27 /* long displacement from EIP */
95 #define o1 28 /* constant 1 */
96 #define o3 29 /* constant 3 */
97 #define OS 30 /* immediate offset/segment */
98 #define ST 31 /* FP stack top */
99 #define STI 32 /* FP stack */
100 #define X 33 /* extended FP op */
101 #define XA 34 /* for 'fstcw %ax' */
102 #define El 35 /* address, long/quad size */
103 #define Ril 36 /* long register in instruction */
104 #define Iba 37 /* byte immediate, don't print if 0xa */
105 #define EL 38 /* address, explicitly long size */
106
107 struct inst {
108 const char * i_name; /* name */
109 short i_has_modrm; /* has regmodrm byte */
110 short i_size; /* operand size */
111 int i_mode; /* addressing modes */
112 const void * i_extra; /* pointer to extra opcode table */
113 };
114
115 #define op1(x) (x)
116 #define op2(x,y) ((x)|((y)<<8))
117 #define op3(x,y,z) ((x)|((y)<<8)|((z)<<16))
118
119 struct finst {
120 const char * f_name; /* name for memory instruction */
121 int f_size; /* size for memory instruction */
122 int f_rrmode; /* mode for rr instruction */
123 const void * f_rrname; /* name for rr instruction
124 (or pointer to table) */
125 };
126
127 static const struct inst db_inst_0f388x[] = {
128 /*80*/ { "", TRUE, SDEP, op2(E, Rq), "invept" },
129 /*81*/ { "", TRUE, SDEP, op2(E, Rq), "invvpid" },
130 /*82*/ { "", TRUE, SDEP, op2(E, Rq), "invpcid" },
131 /*83*/ { "", FALSE, NONE, 0, 0 },
132 /*84*/ { "", FALSE, NONE, 0, 0 },
133 /*85*/ { "", FALSE, NONE, 0, 0 },
134 /*86*/ { "", FALSE, NONE, 0, 0 },
135 /*87*/ { "", FALSE, NONE, 0, 0 },
136
137 /*88*/ { "", FALSE, NONE, 0, 0 },
138 /*89*/ { "", FALSE, NONE, 0, 0 },
139 /*8a*/ { "", FALSE, NONE, 0, 0 },
140 /*8b*/ { "", FALSE, NONE, 0, 0 },
141 /*8c*/ { "", FALSE, NONE, 0, 0 },
142 /*8d*/ { "", FALSE, NONE, 0, 0 },
143 /*8e*/ { "", FALSE, NONE, 0, 0 },
144 /*8f*/ { "", FALSE, NONE, 0, 0 },
145 };
146
147 static const struct inst * const db_inst_0f38[] = {
148 0,
149 0,
150 0,
151 0,
152 0,
153 0,
154 0,
155 0,
156 db_inst_0f388x,
157 0,
158 0,
159 0,
160 0,
161 0,
162 0,
163 0
164 };
165
166 static const char * const db_Grp6[] = {
167 "sldt",
168 "str",
169 "lldt",
170 "ltr",
171 "verr",
172 "verw",
173 "",
174 ""
175 };
176
177 static const char * const db_Grp7[] = {
178 "sgdt",
179 "sidt",
180 "lgdt",
181 "lidt",
182 "smsw",
183 "",
184 "lmsw",
185 "invlpg"
186 };
187
188 static const char * const db_Grp8[] = {
189 "",
190 "",
191 "",
192 "",
193 "bt",
194 "bts",
195 "btr",
196 "btc"
197 };
198
199 static const char * const db_Grp9[] = {
200 "",
201 "cmpxchg8b",
202 "",
203 "",
204 "",
205 "",
206 "vmptrld",
207 "vmptrst"
208 };
209
210 static const char * const db_Grp15[] = {
211 "fxsave",
212 "fxrstor",
213 "ldmxcsr",
214 "stmxcsr",
215 "xsave",
216 "xrstor",
217 "xsaveopt",
218 "clflush"
219 };
220
221 static const char * const db_Grp15b[] = {
222 "",
223 "",
224 "",
225 "",
226 "",
227 "lfence",
228 "mfence",
229 "sfence"
230 };
231
232 static const struct inst db_inst_0f0x[] = {
233 /*00*/ { "", TRUE, NONE, op1(Ew), db_Grp6 },
234 /*01*/ { "", TRUE, NONE, op1(Ew), db_Grp7 },
235 /*02*/ { "lar", TRUE, LONG, op2(E,R), 0 },
236 /*03*/ { "lsl", TRUE, LONG, op2(E,R), 0 },
237 /*04*/ { "", FALSE, NONE, 0, 0 },
238 /*05*/ { "syscall",FALSE,NONE, 0, 0 },
239 /*06*/ { "clts", FALSE, NONE, 0, 0 },
240 /*07*/ { "sysret",FALSE, NONE, 0, 0 },
241
242 /*08*/ { "invd", FALSE, NONE, 0, 0 },
243 /*09*/ { "wbinvd",FALSE, NONE, 0, 0 },
244 /*0a*/ { "", FALSE, NONE, 0, 0 },
245 /*0b*/ { "", FALSE, NONE, 0, 0 },
246 /*0c*/ { "", FALSE, NONE, 0, 0 },
247 /*0d*/ { "", FALSE, NONE, 0, 0 },
248 /*0e*/ { "", FALSE, NONE, 0, 0 },
249 /*0f*/ { "", FALSE, NONE, 0, 0 },
250 };
251
252 static const struct inst db_inst_0f2x[] = {
253 /*20*/ { "mov", TRUE, LONG, op2(CR,El), 0 },
254 /*21*/ { "mov", TRUE, LONG, op2(DR,El), 0 },
255 /*22*/ { "mov", TRUE, LONG, op2(El,CR), 0 },
256 /*23*/ { "mov", TRUE, LONG, op2(El,DR), 0 },
257 /*24*/ { "mov", TRUE, LONG, op2(TR,El), 0 },
258 /*25*/ { "", FALSE, NONE, 0, 0 },
259 /*26*/ { "mov", TRUE, LONG, op2(El,TR), 0 },
260 /*27*/ { "", FALSE, NONE, 0, 0 },
261
262 /*28*/ { "", FALSE, NONE, 0, 0 },
263 /*29*/ { "", FALSE, NONE, 0, 0 },
264 /*2a*/ { "", FALSE, NONE, 0, 0 },
265 /*2b*/ { "", FALSE, NONE, 0, 0 },
266 /*2c*/ { "", FALSE, NONE, 0, 0 },
267 /*2d*/ { "", FALSE, NONE, 0, 0 },
268 /*2e*/ { "", FALSE, NONE, 0, 0 },
269 /*2f*/ { "", FALSE, NONE, 0, 0 },
270 };
271
272 static const struct inst db_inst_0f3x[] = {
273 /*30*/ { "wrmsr", FALSE, NONE, 0, 0 },
274 /*31*/ { "rdtsc", FALSE, NONE, 0, 0 },
275 /*32*/ { "rdmsr", FALSE, NONE, 0, 0 },
276 /*33*/ { "rdpmc", FALSE, NONE, 0, 0 },
277 /*34*/ { "sysenter",FALSE,NONE, 0, 0 },
278 /*35*/ { "sysexit",FALSE,NONE, 0, 0 },
279 /*36*/ { "", FALSE, NONE, 0, 0 },
280 /*37*/ { "getsec",FALSE, NONE, 0, 0 },
281
282 /*38*/ { "", FALSE, ESC, 0, db_inst_0f38 },
283 /*39*/ { "", FALSE, NONE, 0, 0 },
284 /*3a*/ { "", FALSE, NONE, 0, 0 },
285 /*3b*/ { "", FALSE, NONE, 0, 0 },
286 /*3c*/ { "", FALSE, NONE, 0, 0 },
287 /*3d*/ { "", FALSE, NONE, 0, 0 },
288 /*3e*/ { "", FALSE, NONE, 0, 0 },
289 /*3f*/ { "", FALSE, NONE, 0, 0 },
290 };
291
292 static const struct inst db_inst_0f4x[] = {
293 /*40*/ { "cmovo", TRUE, NONE, op2(E, R), 0 },
294 /*41*/ { "cmovno", TRUE, NONE, op2(E, R), 0 },
295 /*42*/ { "cmovb", TRUE, NONE, op2(E, R), 0 },
296 /*43*/ { "cmovnb", TRUE, NONE, op2(E, R), 0 },
297 /*44*/ { "cmovz", TRUE, NONE, op2(E, R), 0 },
298 /*45*/ { "cmovnz", TRUE, NONE, op2(E, R), 0 },
299 /*46*/ { "cmovbe", TRUE, NONE, op2(E, R), 0 },
300 /*47*/ { "cmovnbe",TRUE, NONE, op2(E, R), 0 },
301
302 /*48*/ { "cmovs", TRUE, NONE, op2(E, R), 0 },
303 /*49*/ { "cmovns", TRUE, NONE, op2(E, R), 0 },
304 /*4a*/ { "cmovp", TRUE, NONE, op2(E, R), 0 },
305 /*4b*/ { "cmovnp", TRUE, NONE, op2(E, R), 0 },
306 /*4c*/ { "cmovl", TRUE, NONE, op2(E, R), 0 },
307 /*4d*/ { "cmovnl", TRUE, NONE, op2(E, R), 0 },
308 /*4e*/ { "cmovle", TRUE, NONE, op2(E, R), 0 },
309 /*4f*/ { "cmovnle",TRUE, NONE, op2(E, R), 0 },
310 };
311
312 static const struct inst db_inst_0f7x[] = {
313 /*70*/ { "", FALSE, NONE, 0, 0 },
314 /*71*/ { "", FALSE, NONE, 0, 0 },
315 /*72*/ { "", FALSE, NONE, 0, 0 },
316 /*73*/ { "", FALSE, NONE, 0, 0 },
317 /*74*/ { "", FALSE, NONE, 0, 0 },
318 /*75*/ { "", FALSE, NONE, 0, 0 },
319 /*76*/ { "", FALSE, NONE, 0, 0 },
320 /*77*/ { "", FALSE, NONE, 0, 0 },
321
322 /*78*/ { "vmread", TRUE, NONE, op2(Rq, E), 0 },
323 /*79*/ { "vmwrite",TRUE, NONE, op2(E, Rq), 0 },
324 /*7a*/ { "", FALSE, NONE, 0, 0 },
325 /*7b*/ { "", FALSE, NONE, 0, 0 },
326 /*7c*/ { "", FALSE, NONE, 0, 0 },
327 /*7d*/ { "", FALSE, NONE, 0, 0 },
328 /*7e*/ { "", FALSE, NONE, 0, 0 },
329 /*7f*/ { "", FALSE, NONE, 0, 0 },
330 };
331
332 static const struct inst db_inst_0f8x[] = {
333 /*80*/ { "jo", FALSE, NONE, op1(Dl), 0 },
334 /*81*/ { "jno", FALSE, NONE, op1(Dl), 0 },
335 /*82*/ { "jb", FALSE, NONE, op1(Dl), 0 },
336 /*83*/ { "jnb", FALSE, NONE, op1(Dl), 0 },
337 /*84*/ { "jz", FALSE, NONE, op1(Dl), 0 },
338 /*85*/ { "jnz", FALSE, NONE, op1(Dl), 0 },
339 /*86*/ { "jbe", FALSE, NONE, op1(Dl), 0 },
340 /*87*/ { "jnbe", FALSE, NONE, op1(Dl), 0 },
341
342 /*88*/ { "js", FALSE, NONE, op1(Dl), 0 },
343 /*89*/ { "jns", FALSE, NONE, op1(Dl), 0 },
344 /*8a*/ { "jp", FALSE, NONE, op1(Dl), 0 },
345 /*8b*/ { "jnp", FALSE, NONE, op1(Dl), 0 },
346 /*8c*/ { "jl", FALSE, NONE, op1(Dl), 0 },
347 /*8d*/ { "jnl", FALSE, NONE, op1(Dl), 0 },
348 /*8e*/ { "jle", FALSE, NONE, op1(Dl), 0 },
349 /*8f*/ { "jnle", FALSE, NONE, op1(Dl), 0 },
350 };
351
352 static const struct inst db_inst_0f9x[] = {
353 /*90*/ { "seto", TRUE, NONE, op1(Eb), 0 },
354 /*91*/ { "setno", TRUE, NONE, op1(Eb), 0 },
355 /*92*/ { "setb", TRUE, NONE, op1(Eb), 0 },
356 /*93*/ { "setnb", TRUE, NONE, op1(Eb), 0 },
357 /*94*/ { "setz", TRUE, NONE, op1(Eb), 0 },
358 /*95*/ { "setnz", TRUE, NONE, op1(Eb), 0 },
359 /*96*/ { "setbe", TRUE, NONE, op1(Eb), 0 },
360 /*97*/ { "setnbe",TRUE, NONE, op1(Eb), 0 },
361
362 /*98*/ { "sets", TRUE, NONE, op1(Eb), 0 },
363 /*99*/ { "setns", TRUE, NONE, op1(Eb), 0 },
364 /*9a*/ { "setp", TRUE, NONE, op1(Eb), 0 },
365 /*9b*/ { "setnp", TRUE, NONE, op1(Eb), 0 },
366 /*9c*/ { "setl", TRUE, NONE, op1(Eb), 0 },
367 /*9d*/ { "setnl", TRUE, NONE, op1(Eb), 0 },
368 /*9e*/ { "setle", TRUE, NONE, op1(Eb), 0 },
369 /*9f*/ { "setnle",TRUE, NONE, op1(Eb), 0 },
370 };
371
372 static const struct inst db_inst_0fax[] = {
373 /*a0*/ { "push", FALSE, NONE, op1(Si), 0 },
374 /*a1*/ { "pop", FALSE, NONE, op1(Si), 0 },
375 /*a2*/ { "cpuid", FALSE, NONE, 0, 0 },
376 /*a3*/ { "bt", TRUE, LONG, op2(R,E), 0 },
377 /*a4*/ { "shld", TRUE, LONG, op3(Ib,R,E), 0 },
378 /*a5*/ { "shld", TRUE, LONG, op3(CL,R,E), 0 },
379 /*a6*/ { "", FALSE, NONE, 0, 0 },
380 /*a7*/ { "", FALSE, NONE, 0, 0 },
381
382 /*a8*/ { "push", FALSE, NONE, op1(Si), 0 },
383 /*a9*/ { "pop", FALSE, NONE, op1(Si), 0 },
384 /*aa*/ { "rsm", FALSE, NONE, 0, 0 },
385 /*ab*/ { "bts", TRUE, LONG, op2(R,E), 0 },
386 /*ac*/ { "shrd", TRUE, LONG, op3(Ib,R,E), 0 },
387 /*ad*/ { "shrd", TRUE, LONG, op3(CL,R,E), 0 },
388 /*ae*/ { "", TRUE, LONG, op1(E), db_Grp15 },
389 /*af*/ { "imul", TRUE, LONG, op2(E,R), 0 },
390 };
391
392 static const struct inst db_inst_0fbx[] = {
393 /*b0*/ { "cmpxchg",TRUE, BYTE, op2(R, E), 0 },
394 /*b0*/ { "cmpxchg",TRUE, LONG, op2(R, E), 0 },
395 /*b2*/ { "lss", TRUE, LONG, op2(E, R), 0 },
396 /*b3*/ { "btr", TRUE, LONG, op2(R, E), 0 },
397 /*b4*/ { "lfs", TRUE, LONG, op2(E, R), 0 },
398 /*b5*/ { "lgs", TRUE, LONG, op2(E, R), 0 },
399 /*b6*/ { "movzb", TRUE, LONG, op2(Eb, R), 0 },
400 /*b7*/ { "movzw", TRUE, LONG, op2(Ew, R), 0 },
401
402 /*b8*/ { "", FALSE, NONE, 0, 0 },
403 /*b9*/ { "", FALSE, NONE, 0, 0 },
404 /*ba*/ { "", TRUE, LONG, op2(Ib, E), db_Grp8 },
405 /*bb*/ { "btc", TRUE, LONG, op2(R, E), 0 },
406 /*bc*/ { "bsf", TRUE, LONG, op2(E, R), 0 },
407 /*bd*/ { "bsr", TRUE, LONG, op2(E, R), 0 },
408 /*be*/ { "movsb", TRUE, LONG, op2(Eb, R), 0 },
409 /*bf*/ { "movsw", TRUE, LONG, op2(Ew, R), 0 },
410 };
411
412 static const struct inst db_inst_0fcx[] = {
413 /*c0*/ { "xadd", TRUE, BYTE, op2(R, E), 0 },
414 /*c1*/ { "xadd", TRUE, LONG, op2(R, E), 0 },
415 /*c2*/ { "", FALSE, NONE, 0, 0 },
416 /*c3*/ { "", FALSE, NONE, 0, 0 },
417 /*c4*/ { "", FALSE, NONE, 0, 0 },
418 /*c5*/ { "", FALSE, NONE, 0, 0 },
419 /*c6*/ { "", FALSE, NONE, 0, 0 },
420 /*c7*/ { "", TRUE, NONE, op1(E), db_Grp9 },
421 /*c8*/ { "bswap", FALSE, LONG, op1(Ril), 0 },
422 /*c9*/ { "bswap", FALSE, LONG, op1(Ril), 0 },
423 /*ca*/ { "bswap", FALSE, LONG, op1(Ril), 0 },
424 /*cb*/ { "bswap", FALSE, LONG, op1(Ril), 0 },
425 /*cc*/ { "bswap", FALSE, LONG, op1(Ril), 0 },
426 /*cd*/ { "bswap", FALSE, LONG, op1(Ril), 0 },
427 /*ce*/ { "bswap", FALSE, LONG, op1(Ril), 0 },
428 /*cf*/ { "bswap", FALSE, LONG, op1(Ril), 0 },
429 };
430
431 static const struct inst * const db_inst_0f[] = {
432 db_inst_0f0x,
433 0,
434 db_inst_0f2x,
435 db_inst_0f3x,
436 db_inst_0f4x,
437 0,
438 0,
439 db_inst_0f7x,
440 db_inst_0f8x,
441 db_inst_0f9x,
442 db_inst_0fax,
443 db_inst_0fbx,
444 db_inst_0fcx,
445 0,
446 0,
447 0
448 };
449
450 static const char * const db_Esc92[] = {
451 "fnop", "", "", "", "", "", "", ""
452 };
453 static const char * const db_Esc94[] = {
454 "fchs", "fabs", "", "", "ftst", "fxam", "", ""
455 };
456 static const char * const db_Esc95[] = {
457 "fld1", "fldl2t","fldl2e","fldpi","fldlg2","fldln2","fldz",""
458 };
459 static const char * const db_Esc96[] = {
460 "f2xm1","fyl2x","fptan","fpatan","fxtract","fprem1","fdecstp",
461 "fincstp"
462 };
463 static const char * const db_Esc97[] = {
464 "fprem","fyl2xp1","fsqrt","fsincos","frndint","fscale","fsin","fcos"
465 };
466
467 static const char * const db_Esca5[] = {
468 "", "fucompp","", "", "", "", "", ""
469 };
470
471 static const char * const db_Escb4[] = {
472 "fneni","fndisi", "fnclex","fninit","fsetpm", "", "", ""
473 };
474
475 static const char * const db_Esce3[] = {
476 "", "fcompp","", "", "", "", "", ""
477 };
478
479 static const char * const db_Escf4[] = {
480 "fnstsw","", "", "", "", "", "", ""
481 };
482
483 static const struct finst db_Esc8[] = {
484 /**/ { "fadd", SNGL, op2(STI,ST), 0 },
485 /*1*/ { "fmul", SNGL, op2(STI,ST), 0 },
486 /*2*/ { "fcom", SNGL, op2(STI,ST), 0 },
487 /*3*/ { "fcomp", SNGL, op2(STI,ST), 0 },
488 /*4*/ { "fsub", SNGL, op2(STI,ST), 0 },
489 /*5*/ { "fsubr", SNGL, op2(STI,ST), 0 },
490 /*6*/ { "fdiv", SNGL, op2(STI,ST), 0 },
491 /*7*/ { "fdivr", SNGL, op2(STI,ST), 0 },
492 };
493
494 static const struct finst db_Esc9[] = {
495 /**/ { "fld", SNGL, op1(STI), 0 },
496 /*1*/ { "", NONE, op1(STI), "fxch" },
497 /*2*/ { "fst", SNGL, op1(X), db_Esc92 },
498 /*3*/ { "fstp", SNGL, 0, 0 },
499 /*4*/ { "fldenv", NONE, op1(X), db_Esc94 },
500 /*5*/ { "fldcw", NONE, op1(X), db_Esc95 },
501 /*6*/ { "fnstenv",NONE, op1(X), db_Esc96 },
502 /*7*/ { "fnstcw", NONE, op1(X), db_Esc97 },
503 };
504
505 static const struct finst db_Esca[] = {
506 /**/ { "fiadd", LONG, 0, 0 },
507 /*1*/ { "fimul", LONG, 0, 0 },
508 /*2*/ { "ficom", LONG, 0, 0 },
509 /*3*/ { "ficomp", LONG, 0, 0 },
510 /*4*/ { "fisub", LONG, 0, 0 },
511 /*5*/ { "fisubr", LONG, op1(X), db_Esca5 },
512 /*6*/ { "fidiv", LONG, 0, 0 },
513 /*7*/ { "fidivr", LONG, 0, 0 }
514 };
515
516 static const struct finst db_Escb[] = {
517 /**/ { "fild", LONG, 0, 0 },
518 /*1*/ { "", NONE, 0, 0 },
519 /*2*/ { "fist", LONG, 0, 0 },
520 /*3*/ { "fistp", LONG, 0, 0 },
521 /*4*/ { "", WORD, op1(X), db_Escb4 },
522 /*5*/ { "fld", EXTR, 0, 0 },
523 /*6*/ { "", WORD, 0, 0 },
524 /*7*/ { "fstp", EXTR, 0, 0 },
525 };
526
527 static const struct finst db_Escc[] = {
528 /**/ { "fadd", DBLR, op2(ST,STI), 0 },
529 /*1*/ { "fmul", DBLR, op2(ST,STI), 0 },
530 /*2*/ { "fcom", DBLR, 0, 0 },
531 /*3*/ { "fcomp", DBLR, 0, 0 },
532 /*4*/ { "fsub", DBLR, op2(ST,STI), "fsubr" },
533 /*5*/ { "fsubr", DBLR, op2(ST,STI), "fsub" },
534 /*6*/ { "fdiv", DBLR, op2(ST,STI), "fdivr" },
535 /*7*/ { "fdivr", DBLR, op2(ST,STI), "fdiv" },
536 };
537
538 static const struct finst db_Escd[] = {
539 /**/ { "fld", DBLR, op1(STI), "ffree" },
540 /*1*/ { "", NONE, 0, 0 },
541 /*2*/ { "fst", DBLR, op1(STI), 0 },
542 /*3*/ { "fstp", DBLR, op1(STI), 0 },
543 /*4*/ { "frstor", NONE, op1(STI), "fucom" },
544 /*5*/ { "", NONE, op1(STI), "fucomp" },
545 /*6*/ { "fnsave", NONE, 0, 0 },
546 /*7*/ { "fnstsw", NONE, 0, 0 },
547 };
548
549 static const struct finst db_Esce[] = {
550 /**/ { "fiadd", WORD, op2(ST,STI), "faddp" },
551 /*1*/ { "fimul", WORD, op2(ST,STI), "fmulp" },
552 /*2*/ { "ficom", WORD, 0, 0 },
553 /*3*/ { "ficomp", WORD, op1(X), db_Esce3 },
554 /*4*/ { "fisub", WORD, op2(ST,STI), "fsubrp" },
555 /*5*/ { "fisubr", WORD, op2(ST,STI), "fsubp" },
556 /*6*/ { "fidiv", WORD, op2(ST,STI), "fdivrp" },
557 /*7*/ { "fidivr", WORD, op2(ST,STI), "fdivp" },
558 };
559
560 static const struct finst db_Escf[] = {
561 /**/ { "fild", WORD, 0, 0 },
562 /*1*/ { "", NONE, 0, 0 },
563 /*2*/ { "fist", WORD, 0, 0 },
564 /*3*/ { "fistp", WORD, 0, 0 },
565 /*4*/ { "fbld", NONE, op1(XA), db_Escf4 },
566 /*5*/ { "fild", QUAD, 0, 0 },
567 /*6*/ { "fbstp", NONE, 0, 0 },
568 /*7*/ { "fistp", QUAD, 0, 0 },
569 };
570
571 static const struct finst * const db_Esc_inst[] = {
572 db_Esc8, db_Esc9, db_Esca, db_Escb,
573 db_Escc, db_Escd, db_Esce, db_Escf
574 };
575
576 static const char * const db_Grp1[] = {
577 "add",
578 "or",
579 "adc",
580 "sbb",
581 "and",
582 "sub",
583 "xor",
584 "cmp"
585 };
586
587 static const char * const db_Grp2[] = {
588 "rol",
589 "ror",
590 "rcl",
591 "rcr",
592 "shl",
593 "shr",
594 "shl",
595 "sar"
596 };
597
598 static const struct inst db_Grp3[] = {
599 { "test", TRUE, NONE, op2(I,E), 0 },
600 { "test", TRUE, NONE, op2(I,E), 0 },
601 { "not", TRUE, NONE, op1(E), 0 },
602 { "neg", TRUE, NONE, op1(E), 0 },
603 { "mul", TRUE, NONE, op2(E,A), 0 },
604 { "imul", TRUE, NONE, op2(E,A), 0 },
605 { "div", TRUE, NONE, op2(E,A), 0 },
606 { "idiv", TRUE, NONE, op2(E,A), 0 },
607 };
608
609 static const struct inst db_Grp4[] = {
610 { "inc", TRUE, BYTE, op1(E), 0 },
611 { "dec", TRUE, BYTE, op1(E), 0 },
612 { "", TRUE, NONE, 0, 0 },
613 { "", TRUE, NONE, 0, 0 },
614 { "", TRUE, NONE, 0, 0 },
615 { "", TRUE, NONE, 0, 0 },
616 { "", TRUE, NONE, 0, 0 },
617 { "", TRUE, NONE, 0, 0 }
618 };
619
620 static const struct inst db_Grp5[] = {
621 { "inc", TRUE, LONG, op1(E), 0 },
622 { "dec", TRUE, LONG, op1(E), 0 },
623 { "call", TRUE, LONG, op1(Eind),0 },
624 { "lcall", TRUE, LONG, op1(Eind),0 },
625 { "jmp", TRUE, LONG, op1(Eind),0 },
626 { "ljmp", TRUE, LONG, op1(Eind),0 },
627 { "push", TRUE, LONG, op1(E), 0 },
628 { "", TRUE, NONE, 0, 0 }
629 };
630
631 static const struct inst db_inst_table[256] = {
632 /*00*/ { "add", TRUE, BYTE, op2(R, E), 0 },
633 /*01*/ { "add", TRUE, LONG, op2(R, E), 0 },
634 /*02*/ { "add", TRUE, BYTE, op2(E, R), 0 },
635 /*03*/ { "add", TRUE, LONG, op2(E, R), 0 },
636 /*04*/ { "add", FALSE, BYTE, op2(I, A), 0 },
637 /*05*/ { "add", FALSE, LONG, op2(Is, A), 0 },
638 /*06*/ { "push", FALSE, NONE, op1(Si), 0 },
639 /*07*/ { "pop", FALSE, NONE, op1(Si), 0 },
640
641 /*08*/ { "or", TRUE, BYTE, op2(R, E), 0 },
642 /*09*/ { "or", TRUE, LONG, op2(R, E), 0 },
643 /*0a*/ { "or", TRUE, BYTE, op2(E, R), 0 },
644 /*0b*/ { "or", TRUE, LONG, op2(E, R), 0 },
645 /*0c*/ { "or", FALSE, BYTE, op2(I, A), 0 },
646 /*0d*/ { "or", FALSE, LONG, op2(I, A), 0 },
647 /*0e*/ { "push", FALSE, NONE, op1(Si), 0 },
648 /*0f*/ { "", FALSE, ESC, 0, db_inst_0f },
649
650 /*10*/ { "adc", TRUE, BYTE, op2(R, E), 0 },
651 /*11*/ { "adc", TRUE, LONG, op2(R, E), 0 },
652 /*12*/ { "adc", TRUE, BYTE, op2(E, R), 0 },
653 /*13*/ { "adc", TRUE, LONG, op2(E, R), 0 },
654 /*14*/ { "adc", FALSE, BYTE, op2(I, A), 0 },
655 /*15*/ { "adc", FALSE, LONG, op2(Is, A), 0 },
656 /*16*/ { "push", FALSE, NONE, op1(Si), 0 },
657 /*17*/ { "pop", FALSE, NONE, op1(Si), 0 },
658
659 /*18*/ { "sbb", TRUE, BYTE, op2(R, E), 0 },
660 /*19*/ { "sbb", TRUE, LONG, op2(R, E), 0 },
661 /*1a*/ { "sbb", TRUE, BYTE, op2(E, R), 0 },
662 /*1b*/ { "sbb", TRUE, LONG, op2(E, R), 0 },
663 /*1c*/ { "sbb", FALSE, BYTE, op2(I, A), 0 },
664 /*1d*/ { "sbb", FALSE, LONG, op2(Is, A), 0 },
665 /*1e*/ { "push", FALSE, NONE, op1(Si), 0 },
666 /*1f*/ { "pop", FALSE, NONE, op1(Si), 0 },
667
668 /*20*/ { "and", TRUE, BYTE, op2(R, E), 0 },
669 /*21*/ { "and", TRUE, LONG, op2(R, E), 0 },
670 /*22*/ { "and", TRUE, BYTE, op2(E, R), 0 },
671 /*23*/ { "and", TRUE, LONG, op2(E, R), 0 },
672 /*24*/ { "and", FALSE, BYTE, op2(I, A), 0 },
673 /*25*/ { "and", FALSE, LONG, op2(I, A), 0 },
674 /*26*/ { "", FALSE, NONE, 0, 0 },
675 /*27*/ { "daa", FALSE, NONE, 0, 0 },
676
677 /*28*/ { "sub", TRUE, BYTE, op2(R, E), 0 },
678 /*29*/ { "sub", TRUE, LONG, op2(R, E), 0 },
679 /*2a*/ { "sub", TRUE, BYTE, op2(E, R), 0 },
680 /*2b*/ { "sub", TRUE, LONG, op2(E, R), 0 },
681 /*2c*/ { "sub", FALSE, BYTE, op2(I, A), 0 },
682 /*2d*/ { "sub", FALSE, LONG, op2(Is, A), 0 },
683 /*2e*/ { "", FALSE, NONE, 0, 0 },
684 /*2f*/ { "das", FALSE, NONE, 0, 0 },
685
686 /*30*/ { "xor", TRUE, BYTE, op2(R, E), 0 },
687 /*31*/ { "xor", TRUE, LONG, op2(R, E), 0 },
688 /*32*/ { "xor", TRUE, BYTE, op2(E, R), 0 },
689 /*33*/ { "xor", TRUE, LONG, op2(E, R), 0 },
690 /*34*/ { "xor", FALSE, BYTE, op2(I, A), 0 },
691 /*35*/ { "xor", FALSE, LONG, op2(I, A), 0 },
692 /*36*/ { "", FALSE, NONE, 0, 0 },
693 /*37*/ { "aaa", FALSE, NONE, 0, 0 },
694
695 /*38*/ { "cmp", TRUE, BYTE, op2(R, E), 0 },
696 /*39*/ { "cmp", TRUE, LONG, op2(R, E), 0 },
697 /*3a*/ { "cmp", TRUE, BYTE, op2(E, R), 0 },
698 /*3b*/ { "cmp", TRUE, LONG, op2(E, R), 0 },
699 /*3c*/ { "cmp", FALSE, BYTE, op2(I, A), 0 },
700 /*3d*/ { "cmp", FALSE, LONG, op2(Is, A), 0 },
701 /*3e*/ { "", FALSE, NONE, 0, 0 },
702 /*3f*/ { "aas", FALSE, NONE, 0, 0 },
703
704 /*40*/ { "rex", FALSE, NONE, 0, 0 },
705 /*41*/ { "rex.b", FALSE, NONE, 0, 0 },
706 /*42*/ { "rex.x", FALSE, NONE, 0, 0 },
707 /*43*/ { "rex.xb", FALSE, NONE, 0, 0 },
708 /*44*/ { "rex.r", FALSE, NONE, 0, 0 },
709 /*45*/ { "rex.rb", FALSE, NONE, 0, 0 },
710 /*46*/ { "rex.rx", FALSE, NONE, 0, 0 },
711 /*47*/ { "rex.rxb", FALSE, NONE, 0, 0 },
712
713 /*48*/ { "rex.w", FALSE, NONE, 0, 0 },
714 /*49*/ { "rex.wb", FALSE, NONE, 0, 0 },
715 /*4a*/ { "rex.wx", FALSE, NONE, 0, 0 },
716 /*4b*/ { "rex.wxb", FALSE, NONE, 0, 0 },
717 /*4c*/ { "rex.wr", FALSE, NONE, 0, 0 },
718 /*4d*/ { "rex.wrb", FALSE, NONE, 0, 0 },
719 /*4e*/ { "rex.wrx", FALSE, NONE, 0, 0 },
720 /*4f*/ { "rex.wrxb", FALSE, NONE, 0, 0 },
721
722 /*50*/ { "push", FALSE, LONG, op1(Ri), 0 },
723 /*51*/ { "push", FALSE, LONG, op1(Ri), 0 },
724 /*52*/ { "push", FALSE, LONG, op1(Ri), 0 },
725 /*53*/ { "push", FALSE, LONG, op1(Ri), 0 },
726 /*54*/ { "push", FALSE, LONG, op1(Ri), 0 },
727 /*55*/ { "push", FALSE, LONG, op1(Ri), 0 },
728 /*56*/ { "push", FALSE, LONG, op1(Ri), 0 },
729 /*57*/ { "push", FALSE, LONG, op1(Ri), 0 },
730
731 /*58*/ { "pop", FALSE, LONG, op1(Ri), 0 },
732 /*59*/ { "pop", FALSE, LONG, op1(Ri), 0 },
733 /*5a*/ { "pop", FALSE, LONG, op1(Ri), 0 },
734 /*5b*/ { "pop", FALSE, LONG, op1(Ri), 0 },
735 /*5c*/ { "pop", FALSE, LONG, op1(Ri), 0 },
736 /*5d*/ { "pop", FALSE, LONG, op1(Ri), 0 },
737 /*5e*/ { "pop", FALSE, LONG, op1(Ri), 0 },
738 /*5f*/ { "pop", FALSE, LONG, op1(Ri), 0 },
739
740 /*60*/ { "pusha", FALSE, LONG, 0, 0 },
741 /*61*/ { "popa", FALSE, LONG, 0, 0 },
742 /*62*/ { "bound", TRUE, LONG, op2(E, R), 0 },
743 /*63*/ { "movslq", TRUE, NONE, op2(EL,R), 0 },
744
745 /*64*/ { "", FALSE, NONE, 0, 0 },
746 /*65*/ { "", FALSE, NONE, 0, 0 },
747 /*66*/ { "", FALSE, NONE, 0, 0 },
748 /*67*/ { "", FALSE, NONE, 0, 0 },
749
750 /*68*/ { "push", FALSE, LONG, op1(I), 0 },
751 /*69*/ { "imul", TRUE, LONG, op3(I,E,R), 0 },
752 /*6a*/ { "push", FALSE, LONG, op1(Ibs), 0 },
753 /*6b*/ { "imul", TRUE, LONG, op3(Ibs,E,R),0 },
754 /*6c*/ { "ins", FALSE, BYTE, op2(DX, DI), 0 },
755 /*6d*/ { "ins", FALSE, LONG, op2(DX, DI), 0 },
756 /*6e*/ { "outs", FALSE, BYTE, op2(SI, DX), 0 },
757 /*6f*/ { "outs", FALSE, LONG, op2(SI, DX), 0 },
758
759 /*70*/ { "jo", FALSE, NONE, op1(Db), 0 },
760 /*71*/ { "jno", FALSE, NONE, op1(Db), 0 },
761 /*72*/ { "jb", FALSE, NONE, op1(Db), 0 },
762 /*73*/ { "jnb", FALSE, NONE, op1(Db), 0 },
763 /*74*/ { "jz", FALSE, NONE, op1(Db), 0 },
764 /*75*/ { "jnz", FALSE, NONE, op1(Db), 0 },
765 /*76*/ { "jbe", FALSE, NONE, op1(Db), 0 },
766 /*77*/ { "jnbe", FALSE, NONE, op1(Db), 0 },
767
768 /*78*/ { "js", FALSE, NONE, op1(Db), 0 },
769 /*79*/ { "jns", FALSE, NONE, op1(Db), 0 },
770 /*7a*/ { "jp", FALSE, NONE, op1(Db), 0 },
771 /*7b*/ { "jnp", FALSE, NONE, op1(Db), 0 },
772 /*7c*/ { "jl", FALSE, NONE, op1(Db), 0 },
773 /*7d*/ { "jnl", FALSE, NONE, op1(Db), 0 },
774 /*7e*/ { "jle", FALSE, NONE, op1(Db), 0 },
775 /*7f*/ { "jnle", FALSE, NONE, op1(Db), 0 },
776
777 /*80*/ { "", TRUE, BYTE, op2(I, E), db_Grp1 },
778 /*81*/ { "", TRUE, LONG, op2(I, E), db_Grp1 },
779 /*82*/ { "", TRUE, BYTE, op2(I, E), db_Grp1 },
780 /*83*/ { "", TRUE, LONG, op2(Ibs,E), db_Grp1 },
781 /*84*/ { "test", TRUE, BYTE, op2(R, E), 0 },
782 /*85*/ { "test", TRUE, LONG, op2(R, E), 0 },
783 /*86*/ { "xchg", TRUE, BYTE, op2(R, E), 0 },
784 /*87*/ { "xchg", TRUE, LONG, op2(R, E), 0 },
785
786 /*88*/ { "mov", TRUE, BYTE, op2(R, E), 0 },
787 /*89*/ { "mov", TRUE, LONG, op2(R, E), 0 },
788 /*8a*/ { "mov", TRUE, BYTE, op2(E, R), 0 },
789 /*8b*/ { "mov", TRUE, LONG, op2(E, R), 0 },
790 /*8c*/ { "mov", TRUE, NONE, op2(S, Ew), 0 },
791 /*8d*/ { "lea", TRUE, LONG, op2(E, R), 0 },
792 /*8e*/ { "mov", TRUE, NONE, op2(Ew, S), 0 },
793 /*8f*/ { "pop", TRUE, LONG, op1(E), 0 },
794
795 /*90*/ { "nop", FALSE, NONE, 0, 0 },
796 /*91*/ { "xchg", FALSE, LONG, op2(A, Ri), 0 },
797 /*92*/ { "xchg", FALSE, LONG, op2(A, Ri), 0 },
798 /*93*/ { "xchg", FALSE, LONG, op2(A, Ri), 0 },
799 /*94*/ { "xchg", FALSE, LONG, op2(A, Ri), 0 },
800 /*95*/ { "xchg", FALSE, LONG, op2(A, Ri), 0 },
801 /*96*/ { "xchg", FALSE, LONG, op2(A, Ri), 0 },
802 /*97*/ { "xchg", FALSE, LONG, op2(A, Ri), 0 },
803
804 /*98*/ { "cwde", FALSE, SDEP, 0, "cbw" },
805 /*99*/ { "cdq", FALSE, SDEP, 0, "cwd" },
806 /*9a*/ { "lcall", FALSE, NONE, op1(OS), 0 },
807 /*9b*/ { "wait", FALSE, NONE, 0, 0 },
808 /*9c*/ { "pushf", FALSE, LONG, 0, 0 },
809 /*9d*/ { "popf", FALSE, LONG, 0, 0 },
810 /*9e*/ { "sahf", FALSE, NONE, 0, 0 },
811 /*9f*/ { "lahf", FALSE, NONE, 0, 0 },
812
813 /*a0*/ { "mov", FALSE, BYTE, op2(O, A), 0 },
814 /*a1*/ { "mov", FALSE, LONG, op2(O, A), 0 },
815 /*a2*/ { "mov", FALSE, BYTE, op2(A, O), 0 },
816 /*a3*/ { "mov", FALSE, LONG, op2(A, O), 0 },
817 /*a4*/ { "movs", FALSE, BYTE, op2(SI,DI), 0 },
818 /*a5*/ { "movs", FALSE, LONG, op2(SI,DI), 0 },
819 /*a6*/ { "cmps", FALSE, BYTE, op2(SI,DI), 0 },
820 /*a7*/ { "cmps", FALSE, LONG, op2(SI,DI), 0 },
821
822 /*a8*/ { "test", FALSE, BYTE, op2(I, A), 0 },
823 /*a9*/ { "test", FALSE, LONG, op2(I, A), 0 },
824 /*aa*/ { "stos", FALSE, BYTE, op1(DI), 0 },
825 /*ab*/ { "stos", FALSE, LONG, op1(DI), 0 },
826 /*ac*/ { "lods", FALSE, BYTE, op1(SI), 0 },
827 /*ad*/ { "lods", FALSE, LONG, op1(SI), 0 },
828 /*ae*/ { "scas", FALSE, BYTE, op1(SI), 0 },
829 /*af*/ { "scas", FALSE, LONG, op1(SI), 0 },
830
831 /*b0*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 },
832 /*b1*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 },
833 /*b2*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 },
834 /*b3*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 },
835 /*b4*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 },
836 /*b5*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 },
837 /*b6*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 },
838 /*b7*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 },
839
840 /*b8*/ { "mov", FALSE, LONG, op2(Ilq, Ri), 0 },
841 /*b9*/ { "mov", FALSE, LONG, op2(Ilq, Ri), 0 },
842 /*ba*/ { "mov", FALSE, LONG, op2(Ilq, Ri), 0 },
843 /*bb*/ { "mov", FALSE, LONG, op2(Ilq, Ri), 0 },
844 /*bc*/ { "mov", FALSE, LONG, op2(Ilq, Ri), 0 },
845 /*bd*/ { "mov", FALSE, LONG, op2(Ilq, Ri), 0 },
846 /*be*/ { "mov", FALSE, LONG, op2(Ilq, Ri), 0 },
847 /*bf*/ { "mov", FALSE, LONG, op2(Ilq, Ri), 0 },
848
849 /*c0*/ { "", TRUE, BYTE, op2(Ib, E), db_Grp2 },
850 /*c1*/ { "", TRUE, LONG, op2(Ib, E), db_Grp2 },
851 /*c2*/ { "ret", FALSE, NONE, op1(Iw), 0 },
852 /*c3*/ { "ret", FALSE, NONE, 0, 0 },
853 /*c4*/ { "les", TRUE, LONG, op2(E, R), 0 },
854 /*c5*/ { "lds", TRUE, LONG, op2(E, R), 0 },
855 /*c6*/ { "mov", TRUE, BYTE, op2(I, E), 0 },
856 /*c7*/ { "mov", TRUE, LONG, op2(I, E), 0 },
857
858 /*c8*/ { "enter", FALSE, NONE, op2(Iw, Ib), 0 },
859 /*c9*/ { "leave", FALSE, NONE, 0, 0 },
860 /*ca*/ { "lret", FALSE, NONE, op1(Iw), 0 },
861 /*cb*/ { "lret", FALSE, NONE, 0, 0 },
862 /*cc*/ { "int", FALSE, NONE, op1(o3), 0 },
863 /*cd*/ { "int", FALSE, NONE, op1(Ib), 0 },
864 /*ce*/ { "into", FALSE, NONE, 0, 0 },
865 /*cf*/ { "iret", FALSE, NONE, 0, 0 },
866
867 /*d0*/ { "", TRUE, BYTE, op2(o1, E), db_Grp2 },
868 /*d1*/ { "", TRUE, LONG, op2(o1, E), db_Grp2 },
869 /*d2*/ { "", TRUE, BYTE, op2(CL, E), db_Grp2 },
870 /*d3*/ { "", TRUE, LONG, op2(CL, E), db_Grp2 },
871 /*d4*/ { "aam", FALSE, NONE, op1(Iba), 0 },
872 /*d5*/ { "aad", FALSE, NONE, op1(Iba), 0 },
873 /*d6*/ { ".byte\t0xd6", FALSE, NONE, 0, 0 },
874 /*d7*/ { "xlat", FALSE, BYTE, op1(BX), 0 },
875
876 /*d8*/ { "", TRUE, NONE, 0, db_Esc8 },
877 /*d9*/ { "", TRUE, NONE, 0, db_Esc9 },
878 /*da*/ { "", TRUE, NONE, 0, db_Esca },
879 /*db*/ { "", TRUE, NONE, 0, db_Escb },
880 /*dc*/ { "", TRUE, NONE, 0, db_Escc },
881 /*dd*/ { "", TRUE, NONE, 0, db_Escd },
882 /*de*/ { "", TRUE, NONE, 0, db_Esce },
883 /*df*/ { "", TRUE, NONE, 0, db_Escf },
884
885 /*e0*/ { "loopne",FALSE, NONE, op1(Db), 0 },
886 /*e1*/ { "loope", FALSE, NONE, op1(Db), 0 },
887 /*e2*/ { "loop", FALSE, NONE, op1(Db), 0 },
888 /*e3*/ { "jrcxz", FALSE, ADEP, op1(Db), "jecxz" },
889 /*e4*/ { "in", FALSE, BYTE, op2(Ib, A), 0 },
890 /*e5*/ { "in", FALSE, LONG, op2(Ib, A) , 0 },
891 /*e6*/ { "out", FALSE, BYTE, op2(A, Ib), 0 },
892 /*e7*/ { "out", FALSE, LONG, op2(A, Ib) , 0 },
893
894 /*e8*/ { "call", FALSE, NONE, op1(Dl), 0 },
895 /*e9*/ { "jmp", FALSE, NONE, op1(Dl), 0 },
896 /*ea*/ { "ljmp", FALSE, NONE, op1(OS), 0 },
897 /*eb*/ { "jmp", FALSE, NONE, op1(Db), 0 },
898 /*ec*/ { "in", FALSE, BYTE, op2(DX, A), 0 },
899 /*ed*/ { "in", FALSE, LONG, op2(DX, A) , 0 },
900 /*ee*/ { "out", FALSE, BYTE, op2(A, DX), 0 },
901 /*ef*/ { "out", FALSE, LONG, op2(A, DX) , 0 },
902
903 /*f0*/ { "", FALSE, NONE, 0, 0 },
904 /*f1*/ { ".byte\t0xf1", FALSE, NONE, 0, 0 },
905 /*f2*/ { "", FALSE, NONE, 0, 0 },
906 /*f3*/ { "", FALSE, NONE, 0, 0 },
907 /*f4*/ { "hlt", FALSE, NONE, 0, 0 },
908 /*f5*/ { "cmc", FALSE, NONE, 0, 0 },
909 /*f6*/ { "", TRUE, BYTE, 0, db_Grp3 },
910 /*f7*/ { "", TRUE, LONG, 0, db_Grp3 },
911
912 /*f8*/ { "clc", FALSE, NONE, 0, 0 },
913 /*f9*/ { "stc", FALSE, NONE, 0, 0 },
914 /*fa*/ { "cli", FALSE, NONE, 0, 0 },
915 /*fb*/ { "sti", FALSE, NONE, 0, 0 },
916 /*fc*/ { "cld", FALSE, NONE, 0, 0 },
917 /*fd*/ { "std", FALSE, NONE, 0, 0 },
918 /*fe*/ { "", TRUE, NONE, 0, db_Grp4 },
919 /*ff*/ { "", TRUE, NONE, 0, db_Grp5 },
920 };
921
922 static const struct inst db_bad_inst =
923 { "???", FALSE, NONE, 0, 0 }
924 ;
925
926 #define f_mod(rex, byte) ((byte)>>6)
927 #define f_reg(rex, byte) ((((byte)>>3)&0x7) | (rex & REX_R ? 0x8 : 0x0))
928 #define f_rm(rex, byte) (((byte)&0x7) | (rex & REX_B ? 0x8 : 0x0))
929
930 #define sib_ss(rex, byte) ((byte)>>6)
931 #define sib_index(rex, byte) ((((byte)>>3)&0x7) | (rex & REX_X ? 0x8 : 0x0))
932 #define sib_base(rex, byte) (((byte)&0x7) | (rex & REX_B ? 0x8 : 0x0))
933
934 struct i_addr {
935 int is_reg; /* if reg, reg number is in 'disp' */
936 int disp;
937 const char * base;
938 const char * index;
939 int ss;
940 };
941
942 static const char * const db_reg[2][4][16] = {
943
944 {{"%al", "%cl", "%dl", "%bl", "%ah", "%ch", "%dh", "%bh",
945 "%r8b", "%r9b", "%r10b", "%r11b", "%r12b", "%r13b", "%r14b", "%r15b" },
946 { "%ax", "%cx", "%dx", "%bx", "%sp", "%bp", "%si", "%di",
947 "%r8w", "%r9w", "%r10w", "%r11w", "%r12w", "%r13w", "%r14w", "%r15w" },
948 { "%eax", "%ecx", "%edx", "%ebx", "%esp", "%ebp", "%esi", "%edi",
949 "%r8d", "%r9d", "%r10d", "%r11d", "%r12d", "%r13d", "%r14d", "%r15d" },
950 { "%rax", "%rcx", "%rdx", "%rbx", "%rsp", "%rbp", "%rsi", "%rdi",
951 "%r8", "%r9", "%r10", "%r11", "%r12", "%r13", "%r14", "%r15" }},
952
953 {{"%al", "%cl", "%dl", "%bl", "%spl", "%bpl", "%sil", "%dil",
954 "%r8b", "%r9b", "%r10b", "%r11b", "%r12b", "%r13b", "%r14b", "%r15b" },
955 { "%ax", "%cx", "%dx", "%bx", "%sp", "%bp", "%si", "%di",
956 "%r8w", "%r9w", "%r10w", "%r11w", "%r12w", "%r13w", "%r14w", "%r15w" },
957 { "%eax", "%ecx", "%edx", "%ebx", "%esp", "%ebp", "%esi", "%edi",
958 "%r8d", "%r9d", "%r10d", "%r11d", "%r12d", "%r13d", "%r14d", "%r15d" },
959 { "%rax", "%rcx", "%rdx", "%rbx", "%rsp", "%rbp", "%rsi", "%rdi",
960 "%r8", "%r9", "%r10", "%r11", "%r12", "%r13", "%r14", "%r15" }}
961 };
962
963 static const char * const db_seg_reg[8] = {
964 "%es", "%cs", "%ss", "%ds", "%fs", "%gs", "", ""
965 };
966
967 /*
968 * lengths for size attributes
969 */
970 static const int db_lengths[] = {
971 1, /* BYTE */
972 2, /* WORD */
973 4, /* LONG */
974 8, /* QUAD */
975 4, /* SNGL */
976 8, /* DBLR */
977 10, /* EXTR */
978 };
979
980 #define get_value_inc(result, loc, size, is_signed) \
981 result = db_get_value((loc), (size), (is_signed)); \
982 (loc) += (size);
983
984 static db_addr_t
985 db_disasm_esc(db_addr_t loc, int inst, int rex, int short_addr,
986 int size, const char *seg);
987 static void db_print_address(const char *seg, int size, int rex,
988 struct i_addr *addrp);
989 static db_addr_t
990 db_read_address(db_addr_t loc, int short_addr, int rex, int regmodrm,
991 struct i_addr *addrp);
992
993 /*
994 * Read address at location and return updated location.
995 */
996 static db_addr_t
997 db_read_address(loc, short_addr, rex, regmodrm, addrp)
998 db_addr_t loc;
999 int short_addr;
1000 int rex;
1001 int regmodrm;
1002 struct i_addr * addrp; /* out */
1003 {
1004 int mod, rm, sib, index, disp, size, have_sib;
1005
1006 mod = f_mod(rex, regmodrm);
1007 rm = f_rm(rex, regmodrm);
1008
1009 if (mod == 3) {
1010 addrp->is_reg = TRUE;
1011 addrp->disp = rm;
1012 return (loc);
1013 }
1014 addrp->is_reg = FALSE;
1015 addrp->index = 0;
1016
1017 if (short_addr)
1018 size = LONG;
1019 else
1020 size = QUAD;
1021
1022 if ((rm & 0x7) == 4) {
1023 get_value_inc(sib, loc, 1, FALSE);
1024 rm = sib_base(rex, sib);
1025 index = sib_index(rex, sib);
1026 if (index != 4)
1027 addrp->index = db_reg[1][size][index];
1028 addrp->ss = sib_ss(rex, sib);
1029 have_sib = 1;
1030 } else
1031 have_sib = 0;
1032
1033 switch (mod) {
1034 case 0:
1035 if (rm == 5) {
1036 get_value_inc(addrp->disp, loc, 4, FALSE);
1037 if (have_sib)
1038 addrp->base = 0;
1039 else if (short_addr)
1040 addrp->base = "%eip";
1041 else
1042 addrp->base = "%rip";
1043 } else {
1044 addrp->disp = 0;
1045 addrp->base = db_reg[1][size][rm];
1046 }
1047 break;
1048
1049 case 1:
1050 get_value_inc(disp, loc, 1, TRUE);
1051 addrp->disp = disp;
1052 addrp->base = db_reg[1][size][rm];
1053 break;
1054
1055 case 2:
1056 get_value_inc(disp, loc, 4, FALSE);
1057 addrp->disp = disp;
1058 addrp->base = db_reg[1][size][rm];
1059 break;
1060 }
1061 return (loc);
1062 }
1063
1064 static void
1065 db_print_address(seg, size, rex, addrp)
1066 const char * seg;
1067 int size;
1068 int rex;
1069 struct i_addr * addrp;
1070 {
1071 if (addrp->is_reg) {
1072 db_printf("%s", db_reg[rex != 0 ? 1 : 0][(size == LONG && (rex & REX_W)) ? QUAD : size][addrp->disp]);
1073 return;
1074 }
1075
1076 if (seg) {
1077 db_printf("%s:", seg);
1078 }
1079
1080 if (addrp->disp != 0 || (addrp->base == 0 && addrp->index == 0))
1081 db_printsym((db_addr_t)addrp->disp, DB_STGY_ANY);
1082 if (addrp->base != 0 || addrp->index != 0) {
1083 db_printf("(");
1084 if (addrp->base)
1085 db_printf("%s", addrp->base);
1086 if (addrp->index)
1087 db_printf(",%s,%d", addrp->index, 1<<addrp->ss);
1088 db_printf(")");
1089 }
1090 }
1091
1092 /*
1093 * Disassemble floating-point ("escape") instruction
1094 * and return updated location.
1095 */
1096 static db_addr_t
1097 db_disasm_esc(loc, inst, rex, short_addr, size, seg)
1098 db_addr_t loc;
1099 int inst;
1100 int rex;
1101 int short_addr;
1102 int size;
1103 const char * seg;
1104 {
1105 int regmodrm;
1106 const struct finst * fp;
1107 int mod;
1108 struct i_addr address;
1109 const char * name;
1110
1111 get_value_inc(regmodrm, loc, 1, FALSE);
1112 fp = &db_Esc_inst[inst - 0xd8][f_reg(rex, regmodrm)];
1113 mod = f_mod(rex, regmodrm);
1114 if (mod != 3) {
1115 if (*fp->f_name == '\0') {
1116 db_printf("<bad instruction>");
1117 return (loc);
1118 }
1119 /*
1120 * Normal address modes.
1121 */
1122 loc = db_read_address(loc, short_addr, rex, regmodrm, &address);
1123 db_printf("%s", fp->f_name);
1124 switch(fp->f_size) {
1125 case SNGL:
1126 db_printf("s");
1127 break;
1128 case DBLR:
1129 db_printf("l");
1130 break;
1131 case EXTR:
1132 db_printf("t");
1133 break;
1134 case WORD:
1135 db_printf("s");
1136 break;
1137 case LONG:
1138 db_printf("l");
1139 break;
1140 case QUAD:
1141 db_printf("q");
1142 break;
1143 default:
1144 break;
1145 }
1146 db_printf("\t");
1147 db_print_address(seg, BYTE, rex, &address);
1148 }
1149 else {
1150 /*
1151 * 'reg-reg' - special formats
1152 */
1153 switch (fp->f_rrmode) {
1154 case op2(ST,STI):
1155 name = (fp->f_rrname) ? fp->f_rrname : fp->f_name;
1156 db_printf("%s\t%%st,%%st(%d)",name,f_rm(rex, regmodrm));
1157 break;
1158 case op2(STI,ST):
1159 name = (fp->f_rrname) ? fp->f_rrname : fp->f_name;
1160 db_printf("%s\t%%st(%d),%%st",name, f_rm(rex, regmodrm));
1161 break;
1162 case op1(STI):
1163 name = (fp->f_rrname) ? fp->f_rrname : fp->f_name;
1164 db_printf("%s\t%%st(%d)",name, f_rm(rex, regmodrm));
1165 break;
1166 case op1(X):
1167 name = ((const char * const *)fp->f_rrname)[f_rm(rex, regmodrm)];
1168 if (*name == '\0')
1169 goto bad;
1170 db_printf("%s", name);
1171 break;
1172 case op1(XA):
1173 name = ((const char * const *)fp->f_rrname)[f_rm(rex, regmodrm)];
1174 if (*name == '\0')
1175 goto bad;
1176 db_printf("%s\t%%ax", name);
1177 break;
1178 default:
1179 bad:
1180 db_printf("<bad instruction>");
1181 break;
1182 }
1183 }
1184
1185 return (loc);
1186 }
1187
1188 /*
1189 * Disassemble instruction at 'loc'. 'altfmt' specifies an
1190 * (optional) alternate format. Return address of start of
1191 * next instruction.
1192 */
1193 db_addr_t
1194 db_disasm(loc, altfmt)
1195 db_addr_t loc;
1196 boolean_t altfmt;
1197 {
1198 int inst;
1199 int size;
1200 int short_addr;
1201 const char * seg;
1202 const struct inst * ip;
1203 const char * i_name;
1204 int i_size;
1205 int i_mode;
1206 int rex = 0;
1207 int regmodrm = 0;
1208 boolean_t first;
1209 int displ;
1210 int prefix;
1211 int rep;
1212 int imm;
1213 int imm2;
1214 long imm64;
1215 int len;
1216 struct i_addr address;
1217
1218 get_value_inc(inst, loc, 1, FALSE);
1219 short_addr = FALSE;
1220 size = LONG;
1221 seg = 0;
1222
1223 /*
1224 * Get prefixes
1225 */
1226 rep = FALSE;
1227 prefix = TRUE;
1228 do {
1229 switch (inst) {
1230 case 0x66: /* data16 */
1231 size = WORD;
1232 break;
1233 case 0x67:
1234 short_addr = TRUE;
1235 break;
1236 case 0x26:
1237 seg = "%es";
1238 break;
1239 case 0x36:
1240 seg = "%ss";
1241 break;
1242 case 0x2e:
1243 seg = "%cs";
1244 break;
1245 case 0x3e:
1246 seg = "%ds";
1247 break;
1248 case 0x64:
1249 seg = "%fs";
1250 break;
1251 case 0x65:
1252 seg = "%gs";
1253 break;
1254 case 0xf0:
1255 db_printf("lock ");
1256 break;
1257 case 0xf2:
1258 db_printf("repne ");
1259 break;
1260 case 0xf3:
1261 rep = TRUE;
1262 break;
1263 default:
1264 prefix = FALSE;
1265 break;
1266 }
1267 if (inst >= 0x40 && inst < 0x50) {
1268 rex = inst;
1269 prefix = TRUE;
1270 }
1271 if (prefix) {
1272 get_value_inc(inst, loc, 1, FALSE);
1273 }
1274 } while (prefix);
1275
1276 if (inst >= 0xd8 && inst <= 0xdf) {
1277 loc = db_disasm_esc(loc, inst, rex, short_addr, size, seg);
1278 db_printf("\n");
1279 return (loc);
1280 }
1281
1282 ip = &db_inst_table[inst];
1283 while (ip->i_size == ESC) {
1284 get_value_inc(inst, loc, 1, FALSE);
1285 ip = ((const struct inst * const *)ip->i_extra)[inst>>4];
1286 if (ip == 0) {
1287 ip = &db_bad_inst;
1288 }
1289 else {
1290 ip = &ip[inst&0xf];
1291 }
1292 }
1293
1294 if (ip->i_has_modrm) {
1295 get_value_inc(regmodrm, loc, 1, FALSE);
1296 loc = db_read_address(loc, short_addr, rex, regmodrm, &address);
1297 }
1298
1299 i_name = ip->i_name;
1300 i_size = ip->i_size;
1301 i_mode = ip->i_mode;
1302
1303 if (ip->i_extra == db_Grp1 || ip->i_extra == db_Grp2 ||
1304 ip->i_extra == db_Grp6 || ip->i_extra == db_Grp7 ||
1305 ip->i_extra == db_Grp8 || ip->i_extra == db_Grp9 ||
1306 ip->i_extra == db_Grp15) {
1307 i_name = ((const char * const *)ip->i_extra)[f_reg(rex, regmodrm)];
1308 }
1309 else if (ip->i_extra == db_Grp3) {
1310 ip = ip->i_extra;
1311 ip = &ip[f_reg(rex, regmodrm)];
1312 i_name = ip->i_name;
1313 i_mode = ip->i_mode;
1314 }
1315 else if (ip->i_extra == db_Grp4 || ip->i_extra == db_Grp5) {
1316 ip = ip->i_extra;
1317 ip = &ip[f_reg(rex, regmodrm)];
1318 i_name = ip->i_name;
1319 i_mode = ip->i_mode;
1320 i_size = ip->i_size;
1321 }
1322
1323 /* Special cases that don't fit well in the tables. */
1324 if (ip->i_extra == db_Grp7 && f_mod(rex, regmodrm) == 3) {
1325 switch (regmodrm) {
1326 case 0xc1:
1327 i_name = "vmcall";
1328 i_size = NONE;
1329 i_mode = 0;
1330 break;
1331 case 0xc2:
1332 i_name = "vmlaunch";
1333 i_size = NONE;
1334 i_mode = 0;
1335 break;
1336 case 0xc3:
1337 i_name = "vmresume";
1338 i_size = NONE;
1339 i_mode = 0;
1340 break;
1341 case 0xc4:
1342 i_name = "vmxoff";
1343 i_size = NONE;
1344 i_mode = 0;
1345 break;
1346 case 0xc8:
1347 i_name = "monitor";
1348 i_size = NONE;
1349 i_mode = 0;
1350 break;
1351 case 0xc9:
1352 i_name = "mwait";
1353 i_size = NONE;
1354 i_mode = 0;
1355 break;
1356 case 0xd0:
1357 i_name = "xgetbv";
1358 i_size = NONE;
1359 i_mode = 0;
1360 break;
1361 case 0xd1:
1362 i_name = "xsetbv";
1363 i_size = NONE;
1364 i_mode = 0;
1365 break;
1366 case 0xf8:
1367 i_name = "swapgs";
1368 i_size = NONE;
1369 i_mode = 0;
1370 break;
1371 case 0xf9:
1372 i_name = "rdtscp";
1373 i_size = NONE;
1374 i_mode = 0;
1375 break;
1376 }
1377 }
1378 if (ip->i_extra == db_Grp15 && f_mod(rex, regmodrm) == 3) {
1379 i_name = db_Grp15b[f_reg(rex, regmodrm)];
1380 i_size = NONE;
1381 i_mode = 0;
1382 }
1383
1384 /* Handle instructions identified by mandatory prefixes. */
1385 if (rep == TRUE) {
1386 if (inst == 0x90) {
1387 i_name = "pause";
1388 i_size = NONE;
1389 i_mode = 0;
1390 rep = FALSE;
1391 } else if (ip->i_extra == db_Grp9 && f_mod(rex, regmodrm) != 3 &&
1392 f_reg(rex, regmodrm) == 0x6) {
1393 i_name = "vmxon";
1394 rep = FALSE;
1395 }
1396 }
1397 if (size == WORD) {
1398 if (ip->i_extra == db_Grp9 && f_mod(rex, regmodrm) != 3 &&
1399 f_reg(rex, regmodrm) == 0x6) {
1400 i_name = "vmclear";
1401 }
1402 }
1403 if (rex & REX_W) {
1404 if (strcmp(i_name, "cwde") == 0)
1405 i_name = "cdqe";
1406 else if (strcmp(i_name, "cmpxchg8b") == 0)
1407 i_name = "cmpxchg16b";
1408 }
1409
1410 if (rep == TRUE)
1411 db_printf("repe "); /* XXX repe VS rep */
1412
1413 if (i_size == SDEP) {
1414 if (size == LONG)
1415 db_printf("%s", i_name);
1416 else
1417 db_printf("%s", (const char *)ip->i_extra);
1418 } else if (i_size == ADEP) {
1419 if (short_addr == FALSE)
1420 db_printf("%s", i_name);
1421 else
1422 db_printf("%s", (const char *)ip->i_extra);
1423 }
1424 else {
1425 db_printf("%s", i_name);
1426 if ((inst >= 0x50 && inst <= 0x5f) || inst == 0x68 || inst == 0x6a) {
1427 i_size = NONE;
1428 db_printf("q");
1429 }
1430 if (i_size != NONE) {
1431 if (i_size == BYTE) {
1432 db_printf("b");
1433 size = BYTE;
1434 }
1435 else if (i_size == WORD) {
1436 db_printf("w");
1437 size = WORD;
1438 }
1439 else if (size == WORD)
1440 db_printf("w");
1441 else {
1442 if (rex & REX_W)
1443 db_printf("q");
1444 else
1445 db_printf("l");
1446 }
1447 }
1448 }
1449 db_printf("\t");
1450 for (first = TRUE;
1451 i_mode != 0;
1452 i_mode >>= 8, first = FALSE)
1453 {
1454 if (!first)
1455 db_printf(",");
1456
1457 switch (i_mode & 0xFF) {
1458
1459 case E:
1460 db_print_address(seg, size, rex, &address);
1461 break;
1462
1463 case Eind:
1464 db_printf("*");
1465 db_print_address(seg, size, rex, &address);
1466 break;
1467
1468 case El:
1469 db_print_address(seg, (rex & REX_W) ? QUAD : LONG, rex, &address);
1470 break;
1471
1472 case EL:
1473 db_print_address(seg, LONG, 0, &address);
1474 break;
1475
1476 case Ew:
1477 db_print_address(seg, WORD, rex, &address);
1478 break;
1479
1480 case Eb:
1481 db_print_address(seg, BYTE, rex, &address);
1482 break;
1483
1484 case R:
1485 db_printf("%s", db_reg[rex != 0 ? 1 : 0][(size == LONG && (rex & REX_W)) ? QUAD : size][f_reg(rex, regmodrm)]);
1486 break;
1487
1488 case Rw:
1489 db_printf("%s", db_reg[rex != 0 ? 1 : 0][WORD][f_reg(rex, regmodrm)]);
1490 break;
1491
1492 case Rq:
1493 db_printf("%s", db_reg[rex != 0 ? 1 : 0][QUAD][f_reg(rex, regmodrm)]);
1494 break;
1495
1496 case Ri:
1497 db_printf("%s", db_reg[0][QUAD][f_rm(rex, inst)]);
1498 break;
1499
1500 case Ril:
1501 db_printf("%s", db_reg[rex != 0 ? 1 : 0][(rex & REX_R) ? QUAD : LONG][f_rm(rex, inst)]);
1502 break;
1503
1504 case S:
1505 db_printf("%s", db_seg_reg[f_reg(rex, regmodrm)]);
1506 break;
1507
1508 case Si:
1509 db_printf("%s", db_seg_reg[f_reg(rex, inst)]);
1510 break;
1511
1512 case A:
1513 db_printf("%s", db_reg[rex != 0 ? 1 : 0][size][0]); /* acc */
1514 break;
1515
1516 case BX:
1517 if (seg)
1518 db_printf("%s:", seg);
1519 db_printf("(%s)", short_addr ? "%bx" : "%ebx");
1520 break;
1521
1522 case CL:
1523 db_printf("%%cl");
1524 break;
1525
1526 case DX:
1527 db_printf("%%dx");
1528 break;
1529
1530 case SI:
1531 if (seg)
1532 db_printf("%s:", seg);
1533 db_printf("(%s)", short_addr ? "%si" : "%rsi");
1534 break;
1535
1536 case DI:
1537 db_printf("%%es:(%s)", short_addr ? "%di" : "%rdi");
1538 break;
1539
1540 case CR:
1541 db_printf("%%cr%d", f_reg(rex, regmodrm));
1542 break;
1543
1544 case DR:
1545 db_printf("%%dr%d", f_reg(rex, regmodrm));
1546 break;
1547
1548 case TR:
1549 db_printf("%%tr%d", f_reg(rex, regmodrm));
1550 break;
1551
1552 case I:
1553 len = db_lengths[size];
1554 get_value_inc(imm, loc, len, FALSE);
1555 db_printf("$%#r", imm);
1556 break;
1557
1558 case Is:
1559 len = db_lengths[(size == LONG && (rex & REX_W)) ? QUAD : size];
1560 get_value_inc(imm, loc, len, FALSE);
1561 db_printf("$%+#r", imm);
1562 break;
1563
1564 case Ib:
1565 get_value_inc(imm, loc, 1, FALSE);
1566 db_printf("$%#r", imm);
1567 break;
1568
1569 case Iba:
1570 get_value_inc(imm, loc, 1, FALSE);
1571 if (imm != 0x0a)
1572 db_printf("$%#r", imm);
1573 break;
1574
1575 case Ibs:
1576 get_value_inc(imm, loc, 1, TRUE);
1577 if (size == WORD)
1578 imm &= 0xFFFF;
1579 db_printf("$%+#r", imm);
1580 break;
1581
1582 case Iw:
1583 get_value_inc(imm, loc, 2, FALSE);
1584 db_printf("$%#r", imm);
1585 break;
1586
1587 case Ilq:
1588 len = db_lengths[rex & REX_W ? QUAD : LONG];
1589 get_value_inc(imm64, loc, len, FALSE);
1590 db_printf("$%#lr", imm64);
1591 break;
1592
1593 case O:
1594 len = (short_addr ? 2 : 4);
1595 get_value_inc(displ, loc, len, FALSE);
1596 if (seg)
1597 db_printf("%s:%+#r",seg, displ);
1598 else
1599 db_printsym((db_addr_t)displ, DB_STGY_ANY);
1600 break;
1601
1602 case Db:
1603 get_value_inc(displ, loc, 1, TRUE);
1604 displ += loc;
1605 if (size == WORD)
1606 displ &= 0xFFFF;
1607 db_printsym((db_addr_t)displ, DB_STGY_XTRN);
1608 break;
1609
1610 case Dl:
1611 len = db_lengths[(size == LONG && (rex & REX_W)) ? QUAD : size];
1612 get_value_inc(displ, loc, len, FALSE);
1613 displ += loc;
1614 if (size == WORD)
1615 displ &= 0xFFFF;
1616 db_printsym((db_addr_t)displ, DB_STGY_XTRN);
1617 break;
1618
1619 case o1:
1620 db_printf("$1");
1621 break;
1622
1623 case o3:
1624 db_printf("$3");
1625 break;
1626
1627 case OS:
1628 len = db_lengths[size];
1629 get_value_inc(imm, loc, len, FALSE); /* offset */
1630 get_value_inc(imm2, loc, 2, FALSE); /* segment */
1631 db_printf("$%#r,%#r", imm2, imm);
1632 break;
1633 }
1634 }
1635 db_printf("\n");
1636 return (loc);
1637 }
Cache object: 3d400ffff002a19a2c861961f391f009
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