xref: /freebsd/sys/amd64/amd64/db_disasm.c (revision 0957b409)
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("$FreeBSD$");
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	Rv	40			/* register in 'r/m' field */
75 #define	Ri	7			/* register in instruction */
76 #define	S	8			/* segment reg, in 'reg' field */
77 #define	Si	9			/* segment reg, in instruction */
78 #define	A	10			/* accumulator */
79 #define	BX	11			/* (bx) */
80 #define	CL	12			/* cl, for shifts */
81 #define	DX	13			/* dx, for IO */
82 #define	SI	14			/* si */
83 #define	DI	15			/* di */
84 #define	CR	16			/* control register */
85 #define	DR	17			/* debug register */
86 #define	TR	18			/* test register */
87 #define	I	19			/* immediate, unsigned */
88 #define	Is	20			/* immediate, signed */
89 #define	Ib	21			/* byte immediate, unsigned */
90 #define	Ibs	22			/* byte immediate, signed */
91 #define	Iw	23			/* word immediate, unsigned */
92 #define	Ilq	24			/* long/quad immediate, unsigned */
93 #define	O	25			/* direct address */
94 #define	Db	26			/* byte displacement from EIP */
95 #define	Dl	27			/* long displacement from EIP */
96 #define	o1	28			/* constant 1 */
97 #define	o3	29			/* constant 3 */
98 #define	OS	30			/* immediate offset/segment */
99 #define	ST	31			/* FP stack top */
100 #define	STI	32			/* FP stack */
101 #define	X	33			/* extended FP op */
102 #define	XA	34			/* for 'fstcw %ax' */
103 #define	El	35			/* address, long/quad size */
104 #define	Ril	36			/* long register in instruction */
105 #define	Iba	37			/* byte immediate, don't print if 0xa */
106 #define	EL	38			/* address, explicitly long size */
107 
108 struct inst {
109 	const char *	i_name;		/* name */
110 	short	i_has_modrm;		/* has regmodrm byte */
111 	short	i_size;			/* operand size */
112 	int	i_mode;			/* addressing modes */
113 	const void *	i_extra;	/* pointer to extra opcode table */
114 };
115 
116 #define	op1(x)		(x)
117 #define	op2(x,y)	((x)|((y)<<8))
118 #define	op3(x,y,z)	((x)|((y)<<8)|((z)<<16))
119 
120 struct finst {
121 	const char *	f_name;		/* name for memory instruction */
122 	int	f_size;			/* size for memory instruction */
123 	int	f_rrmode;		/* mode for rr instruction */
124 	const void *	f_rrname;	/* name for rr instruction
125 					   (or pointer to table) */
126 };
127 
128 static const struct inst db_inst_0f388x[] = {
129 /*80*/	{ "",	   TRUE,  SDEP,  op2(E, Rq),  "invept" },
130 /*81*/	{ "",	   TRUE,  SDEP,  op2(E, Rq),  "invvpid" },
131 /*82*/	{ "",	   TRUE,  SDEP,  op2(E, Rq),  "invpcid" },
132 /*83*/	{ "",	   FALSE, NONE,  0,	      0 },
133 /*84*/	{ "",	   FALSE, NONE,  0,	      0 },
134 /*85*/	{ "",	   FALSE, NONE,  0,	      0 },
135 /*86*/	{ "",	   FALSE, NONE,  0,	      0 },
136 /*87*/	{ "",	   FALSE, NONE,  0,	      0 },
137 
138 /*88*/	{ "",	   FALSE, NONE,  0,	      0 },
139 /*89*/	{ "",	   FALSE, NONE,  0,	      0 },
140 /*8a*/	{ "",	   FALSE, NONE,  0,	      0 },
141 /*8b*/	{ "",	   FALSE, NONE,  0,	      0 },
142 /*8c*/	{ "",	   FALSE, NONE,  0,	      0 },
143 /*8d*/	{ "",	   FALSE, NONE,  0,	      0 },
144 /*8e*/	{ "",	   FALSE, NONE,  0,	      0 },
145 /*8f*/	{ "",	   FALSE, NONE,  0,	      0 },
146 };
147 
148 static const struct inst * const db_inst_0f38[] = {
149 	0,
150 	0,
151 	0,
152 	0,
153 	0,
154 	0,
155 	0,
156 	0,
157 	db_inst_0f388x,
158 	0,
159 	0,
160 	0,
161 	0,
162 	0,
163 	0,
164 	0
165 };
166 
167 static const char * const db_Grp6[] = {
168 	"sldt",
169 	"str",
170 	"lldt",
171 	"ltr",
172 	"verr",
173 	"verw",
174 	"",
175 	""
176 };
177 
178 static const char * const db_Grp7[] = {
179 	"sgdt",
180 	"sidt",
181 	"lgdt",
182 	"lidt",
183 	"smsw",
184 	"",
185 	"lmsw",
186 	"invlpg"
187 };
188 
189 static const char * const db_Grp8[] = {
190 	"",
191 	"",
192 	"",
193 	"",
194 	"bt",
195 	"bts",
196 	"btr",
197 	"btc"
198 };
199 
200 static const char * const db_Grp9[] = {
201 	"",
202 	"cmpxchg8b",
203 	"",
204 	"",
205 	"",
206 	"",
207 	"vmptrld",
208 	"vmptrst"
209 };
210 
211 static const char * const db_Grp15[] = {
212 	"fxsave",
213 	"fxrstor",
214 	"ldmxcsr",
215 	"stmxcsr",
216 	"xsave",
217 	"xrstor",
218 	"xsaveopt",
219 	"clflush"
220 };
221 
222 static const char * const db_Grp15b[] = {
223 	"",
224 	"",
225 	"",
226 	"",
227 	"",
228 	"lfence",
229 	"mfence",
230 	"sfence"
231 };
232 
233 static const struct inst db_inst_0f0x[] = {
234 /*00*/	{ "",	   TRUE,  NONE,  op1(Ew),     db_Grp6 },
235 /*01*/	{ "",	   TRUE,  NONE,  op1(Ew),     db_Grp7 },
236 /*02*/	{ "lar",   TRUE,  LONG,  op2(E,R),    0 },
237 /*03*/	{ "lsl",   TRUE,  LONG,  op2(E,R),    0 },
238 /*04*/	{ "",      FALSE, NONE,  0,	      0 },
239 /*05*/	{ "syscall",FALSE,NONE,  0,	      0 },
240 /*06*/	{ "clts",  FALSE, NONE,  0,	      0 },
241 /*07*/	{ "sysret",FALSE, NONE,  0,	      0 },
242 
243 /*08*/	{ "invd",  FALSE, NONE,  0,	      0 },
244 /*09*/	{ "wbinvd",FALSE, NONE,  0,	      0 },
245 /*0a*/	{ "",      FALSE, NONE,  0,	      0 },
246 /*0b*/	{ "",      FALSE, NONE,  0,	      0 },
247 /*0c*/	{ "",      FALSE, NONE,  0,	      0 },
248 /*0d*/	{ "",      FALSE, NONE,  0,	      0 },
249 /*0e*/	{ "",      FALSE, NONE,  0,	      0 },
250 /*0f*/	{ "",      FALSE, NONE,  0,	      0 },
251 };
252 
253 static const struct inst db_inst_0f1x[] = {
254 /*10*/	{ "",      FALSE, NONE,  0,	      0 },
255 /*11*/	{ "",      FALSE, NONE,  0,	      0 },
256 /*12*/	{ "",      FALSE, NONE,  0,	      0 },
257 /*13*/	{ "",      FALSE, NONE,  0,	      0 },
258 /*14*/	{ "",      FALSE, NONE,  0,	      0 },
259 /*15*/	{ "",      FALSE, NONE,  0,	      0 },
260 /*16*/	{ "",      FALSE, NONE,  0,	      0 },
261 /*17*/	{ "",      FALSE, NONE,  0,	      0 },
262 
263 /*18*/	{ "",      FALSE, NONE,  0,	      0 },
264 /*19*/	{ "",      FALSE, NONE,  0,	      0 },
265 /*1a*/	{ "",      FALSE, NONE,  0,	      0 },
266 /*1b*/	{ "",      FALSE, NONE,  0,	      0 },
267 /*1c*/	{ "",      FALSE, NONE,  0,	      0 },
268 /*1d*/	{ "",      FALSE, NONE,  0,	      0 },
269 /*1e*/	{ "",      FALSE, NONE,  0,	      0 },
270 /*1f*/	{ "nopl",  TRUE,  SDEP,  0,	      "nopw" },
271 };
272 
273 static const struct inst db_inst_0f2x[] = {
274 /*20*/	{ "mov",   TRUE,  LONG,  op2(CR,El),  0 },
275 /*21*/	{ "mov",   TRUE,  LONG,  op2(DR,El),  0 },
276 /*22*/	{ "mov",   TRUE,  LONG,  op2(El,CR),  0 },
277 /*23*/	{ "mov",   TRUE,  LONG,  op2(El,DR),  0 },
278 /*24*/	{ "mov",   TRUE,  LONG,  op2(TR,El),  0 },
279 /*25*/	{ "",      FALSE, NONE,  0,	      0 },
280 /*26*/	{ "mov",   TRUE,  LONG,  op2(El,TR),  0 },
281 /*27*/	{ "",      FALSE, NONE,  0,	      0 },
282 
283 /*28*/	{ "",      FALSE, NONE,  0,	      0 },
284 /*29*/	{ "",      FALSE, NONE,  0,	      0 },
285 /*2a*/	{ "",      FALSE, NONE,  0,	      0 },
286 /*2b*/	{ "",      FALSE, NONE,  0,	      0 },
287 /*2c*/	{ "",      FALSE, NONE,  0,	      0 },
288 /*2d*/	{ "",      FALSE, NONE,  0,	      0 },
289 /*2e*/	{ "",      FALSE, NONE,  0,	      0 },
290 /*2f*/	{ "",      FALSE, NONE,  0,	      0 },
291 };
292 
293 static const struct inst db_inst_0f3x[] = {
294 /*30*/	{ "wrmsr", FALSE, NONE,  0,	      0 },
295 /*31*/	{ "rdtsc", FALSE, NONE,  0,	      0 },
296 /*32*/	{ "rdmsr", FALSE, NONE,  0,	      0 },
297 /*33*/	{ "rdpmc", FALSE, NONE,  0,	      0 },
298 /*34*/	{ "sysenter",FALSE,NONE,  0,	      0 },
299 /*35*/	{ "sysexit",FALSE,NONE,  0,	      0 },
300 /*36*/	{ "",	   FALSE, NONE,  0,	      0 },
301 /*37*/	{ "getsec",FALSE, NONE,  0,	      0 },
302 
303 /*38*/	{ "",	   FALSE, ESC,  0,	      db_inst_0f38 },
304 /*39*/	{ "",	   FALSE, NONE,  0,	      0 },
305 /*3a*/	{ "",	   FALSE, NONE,  0,	      0 },
306 /*3b*/	{ "",	   FALSE, NONE,  0,	      0 },
307 /*3c*/	{ "",	   FALSE, NONE,  0,	      0 },
308 /*3d*/	{ "",	   FALSE, NONE,  0,	      0 },
309 /*3e*/	{ "",	   FALSE, NONE,  0,	      0 },
310 /*3f*/	{ "",	   FALSE, NONE,  0,	      0 },
311 };
312 
313 static const struct inst db_inst_0f4x[] = {
314 /*40*/	{ "cmovo",  TRUE, NONE,  op2(E, R),   0 },
315 /*41*/	{ "cmovno", TRUE, NONE,  op2(E, R),   0 },
316 /*42*/	{ "cmovb",  TRUE, NONE,  op2(E, R),   0 },
317 /*43*/	{ "cmovnb", TRUE, NONE,  op2(E, R),   0 },
318 /*44*/	{ "cmovz",  TRUE, NONE,  op2(E, R),   0 },
319 /*45*/	{ "cmovnz", TRUE, NONE,  op2(E, R),   0 },
320 /*46*/	{ "cmovbe", TRUE, NONE,  op2(E, R),   0 },
321 /*47*/	{ "cmovnbe",TRUE, NONE,  op2(E, R),   0 },
322 
323 /*48*/	{ "cmovs",  TRUE, NONE,  op2(E, R),   0 },
324 /*49*/	{ "cmovns", TRUE, NONE,  op2(E, R),   0 },
325 /*4a*/	{ "cmovp",  TRUE, NONE,  op2(E, R),   0 },
326 /*4b*/	{ "cmovnp", TRUE, NONE,  op2(E, R),   0 },
327 /*4c*/	{ "cmovl",  TRUE, NONE,  op2(E, R),   0 },
328 /*4d*/	{ "cmovnl", TRUE, NONE,  op2(E, R),   0 },
329 /*4e*/	{ "cmovle", TRUE, NONE,  op2(E, R),   0 },
330 /*4f*/	{ "cmovnle",TRUE, NONE,  op2(E, R),   0 },
331 };
332 
333 static const struct inst db_inst_0f7x[] = {
334 /*70*/	{ "",	   FALSE, NONE,  0,	      0 },
335 /*71*/	{ "",	   FALSE, NONE,  0,	      0 },
336 /*72*/	{ "",	   FALSE, NONE,  0,	      0 },
337 /*73*/	{ "",	   FALSE, NONE,  0,	      0 },
338 /*74*/	{ "",	   FALSE, NONE,  0,	      0 },
339 /*75*/	{ "",	   FALSE, NONE,  0,	      0 },
340 /*76*/	{ "",	   FALSE, NONE,  0,	      0 },
341 /*77*/	{ "",	   FALSE, NONE,  0,	      0 },
342 
343 /*78*/	{ "vmread", TRUE, NONE,  op2(Rq, E),  0 },
344 /*79*/	{ "vmwrite",TRUE, NONE,  op2(E, Rq),  0 },
345 /*7a*/	{ "",	   FALSE, NONE,  0,	      0 },
346 /*7b*/	{ "",	   FALSE, NONE,  0,	      0 },
347 /*7c*/	{ "",	   FALSE, NONE,  0,	      0 },
348 /*7d*/	{ "",	   FALSE, NONE,  0,	      0 },
349 /*7e*/	{ "",	   FALSE, NONE,  0,	      0 },
350 /*7f*/	{ "",	   FALSE, NONE,  0,	      0 },
351 };
352 
353 static const struct inst db_inst_0f8x[] = {
354 /*80*/	{ "jo",    FALSE, NONE,  op1(Dl),     0 },
355 /*81*/	{ "jno",   FALSE, NONE,  op1(Dl),     0 },
356 /*82*/	{ "jb",    FALSE, NONE,  op1(Dl),     0 },
357 /*83*/	{ "jnb",   FALSE, NONE,  op1(Dl),     0 },
358 /*84*/	{ "jz",    FALSE, NONE,  op1(Dl),     0 },
359 /*85*/	{ "jnz",   FALSE, NONE,  op1(Dl),     0 },
360 /*86*/	{ "jbe",   FALSE, NONE,  op1(Dl),     0 },
361 /*87*/	{ "jnbe",  FALSE, NONE,  op1(Dl),     0 },
362 
363 /*88*/	{ "js",    FALSE, NONE,  op1(Dl),     0 },
364 /*89*/	{ "jns",   FALSE, NONE,  op1(Dl),     0 },
365 /*8a*/	{ "jp",    FALSE, NONE,  op1(Dl),     0 },
366 /*8b*/	{ "jnp",   FALSE, NONE,  op1(Dl),     0 },
367 /*8c*/	{ "jl",    FALSE, NONE,  op1(Dl),     0 },
368 /*8d*/	{ "jnl",   FALSE, NONE,  op1(Dl),     0 },
369 /*8e*/	{ "jle",   FALSE, NONE,  op1(Dl),     0 },
370 /*8f*/	{ "jnle",  FALSE, NONE,  op1(Dl),     0 },
371 };
372 
373 static const struct inst db_inst_0f9x[] = {
374 /*90*/	{ "seto",  TRUE,  NONE,  op1(Eb),     0 },
375 /*91*/	{ "setno", TRUE,  NONE,  op1(Eb),     0 },
376 /*92*/	{ "setb",  TRUE,  NONE,  op1(Eb),     0 },
377 /*93*/	{ "setnb", TRUE,  NONE,  op1(Eb),     0 },
378 /*94*/	{ "setz",  TRUE,  NONE,  op1(Eb),     0 },
379 /*95*/	{ "setnz", TRUE,  NONE,  op1(Eb),     0 },
380 /*96*/	{ "setbe", TRUE,  NONE,  op1(Eb),     0 },
381 /*97*/	{ "setnbe",TRUE,  NONE,  op1(Eb),     0 },
382 
383 /*98*/	{ "sets",  TRUE,  NONE,  op1(Eb),     0 },
384 /*99*/	{ "setns", TRUE,  NONE,  op1(Eb),     0 },
385 /*9a*/	{ "setp",  TRUE,  NONE,  op1(Eb),     0 },
386 /*9b*/	{ "setnp", TRUE,  NONE,  op1(Eb),     0 },
387 /*9c*/	{ "setl",  TRUE,  NONE,  op1(Eb),     0 },
388 /*9d*/	{ "setnl", TRUE,  NONE,  op1(Eb),     0 },
389 /*9e*/	{ "setle", TRUE,  NONE,  op1(Eb),     0 },
390 /*9f*/	{ "setnle",TRUE,  NONE,  op1(Eb),     0 },
391 };
392 
393 static const struct inst db_inst_0fax[] = {
394 /*a0*/	{ "push",  FALSE, NONE,  op1(Si),     0 },
395 /*a1*/	{ "pop",   FALSE, NONE,  op1(Si),     0 },
396 /*a2*/	{ "cpuid", FALSE, NONE,  0,	      0 },
397 /*a3*/	{ "bt",    TRUE,  LONG,  op2(R,E),    0 },
398 /*a4*/	{ "shld",  TRUE,  LONG,  op3(Ib,R,E), 0 },
399 /*a5*/	{ "shld",  TRUE,  LONG,  op3(CL,R,E), 0 },
400 /*a6*/	{ "",      FALSE, NONE,  0,	      0 },
401 /*a7*/	{ "",      FALSE, NONE,  0,	      0 },
402 
403 /*a8*/	{ "push",  FALSE, NONE,  op1(Si),     0 },
404 /*a9*/	{ "pop",   FALSE, NONE,  op1(Si),     0 },
405 /*aa*/	{ "rsm",   FALSE, NONE,  0,	      0 },
406 /*ab*/	{ "bts",   TRUE,  LONG,  op2(R,E),    0 },
407 /*ac*/	{ "shrd",  TRUE,  LONG,  op3(Ib,R,E), 0 },
408 /*ad*/	{ "shrd",  TRUE,  LONG,  op3(CL,R,E), 0 },
409 /*ae*/	{ "",      TRUE,  LONG,  op1(E),      db_Grp15 },
410 /*af*/	{ "imul",  TRUE,  LONG,  op2(E,R),    0 },
411 };
412 
413 static const struct inst db_inst_0fbx[] = {
414 /*b0*/	{ "cmpxchg",TRUE, BYTE,	 op2(R, E),   0 },
415 /*b0*/	{ "cmpxchg",TRUE, LONG,	 op2(R, E),   0 },
416 /*b2*/	{ "lss",   TRUE,  LONG,  op2(E, R),   0 },
417 /*b3*/	{ "btr",   TRUE,  LONG,  op2(R, E),   0 },
418 /*b4*/	{ "lfs",   TRUE,  LONG,  op2(E, R),   0 },
419 /*b5*/	{ "lgs",   TRUE,  LONG,  op2(E, R),   0 },
420 /*b6*/	{ "movzb", TRUE,  LONG,  op2(Eb, R),  0 },
421 /*b7*/	{ "movzw", TRUE,  LONG,  op2(Ew, R),  0 },
422 
423 /*b8*/	{ "",      FALSE, NONE,  0,	      0 },
424 /*b9*/	{ "",      FALSE, NONE,  0,	      0 },
425 /*ba*/	{ "",      TRUE,  LONG,  op2(Ib, E),  db_Grp8 },
426 /*bb*/	{ "btc",   TRUE,  LONG,  op2(R, E),   0 },
427 /*bc*/	{ "bsf",   TRUE,  LONG,  op2(E, R),   0 },
428 /*bd*/	{ "bsr",   TRUE,  LONG,  op2(E, R),   0 },
429 /*be*/	{ "movsb", TRUE,  LONG,  op2(Eb, R),  0 },
430 /*bf*/	{ "movsw", TRUE,  LONG,  op2(Ew, R),  0 },
431 };
432 
433 static const struct inst db_inst_0fcx[] = {
434 /*c0*/	{ "xadd",  TRUE,  BYTE,	 op2(R, E),   0 },
435 /*c1*/	{ "xadd",  TRUE,  LONG,	 op2(R, E),   0 },
436 /*c2*/	{ "",	   FALSE, NONE,	 0,	      0 },
437 /*c3*/	{ "",	   FALSE, NONE,	 0,	      0 },
438 /*c4*/	{ "",	   FALSE, NONE,	 0,	      0 },
439 /*c5*/	{ "",	   FALSE, NONE,	 0,	      0 },
440 /*c6*/	{ "",	   FALSE, NONE,	 0,	      0 },
441 /*c7*/	{ "",	   TRUE,  NONE,  op1(E),      db_Grp9 },
442 /*c8*/	{ "bswap", FALSE, LONG,  op1(Ril),    0 },
443 /*c9*/	{ "bswap", FALSE, LONG,  op1(Ril),    0 },
444 /*ca*/	{ "bswap", FALSE, LONG,  op1(Ril),    0 },
445 /*cb*/	{ "bswap", FALSE, LONG,  op1(Ril),    0 },
446 /*cc*/	{ "bswap", FALSE, LONG,  op1(Ril),    0 },
447 /*cd*/	{ "bswap", FALSE, LONG,  op1(Ril),    0 },
448 /*ce*/	{ "bswap", FALSE, LONG,  op1(Ril),    0 },
449 /*cf*/	{ "bswap", FALSE, LONG,  op1(Ril),    0 },
450 };
451 
452 static const struct inst * const db_inst_0f[] = {
453 	db_inst_0f0x,
454 	db_inst_0f1x,
455 	db_inst_0f2x,
456 	db_inst_0f3x,
457 	db_inst_0f4x,
458 	0,
459 	0,
460 	db_inst_0f7x,
461 	db_inst_0f8x,
462 	db_inst_0f9x,
463 	db_inst_0fax,
464 	db_inst_0fbx,
465 	db_inst_0fcx,
466 	0,
467 	0,
468 	0
469 };
470 
471 static const char * const db_Esc92[] = {
472 	"fnop",	"",	"",	"",	"",	"",	"",	""
473 };
474 static const char * const db_Esc94[] = {
475 	"fchs",	"fabs",	"",	"",	"ftst",	"fxam",	"",	""
476 };
477 static const char * const db_Esc95[] = {
478 	"fld1",	"fldl2t","fldl2e","fldpi","fldlg2","fldln2","fldz",""
479 };
480 static const char * const db_Esc96[] = {
481 	"f2xm1","fyl2x","fptan","fpatan","fxtract","fprem1","fdecstp",
482 	"fincstp"
483 };
484 static const char * const db_Esc97[] = {
485 	"fprem","fyl2xp1","fsqrt","fsincos","frndint","fscale","fsin","fcos"
486 };
487 
488 static const char * const db_Esca5[] = {
489 	"",	"fucompp","",	"",	"",	"",	"",	""
490 };
491 
492 static const char * const db_Escb4[] = {
493 	"fneni","fndisi",	"fnclex","fninit","fsetpm",	"",	"",	""
494 };
495 
496 static const char * const db_Esce3[] = {
497 	"",	"fcompp","",	"",	"",	"",	"",	""
498 };
499 
500 static const char * const db_Escf4[] = {
501 	"fnstsw","",	"",	"",	"",	"",	"",	""
502 };
503 
504 static const struct finst db_Esc8[] = {
505 /*0*/	{ "fadd",   SNGL,  op2(STI,ST),	0 },
506 /*1*/	{ "fmul",   SNGL,  op2(STI,ST),	0 },
507 /*2*/	{ "fcom",   SNGL,  op2(STI,ST),	0 },
508 /*3*/	{ "fcomp",  SNGL,  op2(STI,ST),	0 },
509 /*4*/	{ "fsub",   SNGL,  op2(STI,ST),	0 },
510 /*5*/	{ "fsubr",  SNGL,  op2(STI,ST),	0 },
511 /*6*/	{ "fdiv",   SNGL,  op2(STI,ST),	0 },
512 /*7*/	{ "fdivr",  SNGL,  op2(STI,ST),	0 },
513 };
514 
515 static const struct finst db_Esc9[] = {
516 /*0*/	{ "fld",    SNGL,  op1(STI),	0 },
517 /*1*/	{ "",       NONE,  op1(STI),	"fxch" },
518 /*2*/	{ "fst",    SNGL,  op1(X),	db_Esc92 },
519 /*3*/	{ "fstp",   SNGL,  0,		0 },
520 /*4*/	{ "fldenv", NONE,  op1(X),	db_Esc94 },
521 /*5*/	{ "fldcw",  NONE,  op1(X),	db_Esc95 },
522 /*6*/	{ "fnstenv",NONE,  op1(X),	db_Esc96 },
523 /*7*/	{ "fnstcw", NONE,  op1(X),	db_Esc97 },
524 };
525 
526 static const struct finst db_Esca[] = {
527 /*0*/	{ "fiadd",  LONG,  0,		0 },
528 /*1*/	{ "fimul",  LONG,  0,		0 },
529 /*2*/	{ "ficom",  LONG,  0,		0 },
530 /*3*/	{ "ficomp", LONG,  0,		0 },
531 /*4*/	{ "fisub",  LONG,  0,		0 },
532 /*5*/	{ "fisubr", LONG,  op1(X),	db_Esca5 },
533 /*6*/	{ "fidiv",  LONG,  0,		0 },
534 /*7*/	{ "fidivr", LONG,  0,		0 }
535 };
536 
537 static const struct finst db_Escb[] = {
538 /*0*/	{ "fild",   LONG,  0,		0 },
539 /*1*/	{ "",       NONE,  0,		0 },
540 /*2*/	{ "fist",   LONG,  0,		0 },
541 /*3*/	{ "fistp",  LONG,  0,		0 },
542 /*4*/	{ "",       WORD,  op1(X),	db_Escb4 },
543 /*5*/	{ "fld",    EXTR,  0,		0 },
544 /*6*/	{ "",       WORD,  0,		0 },
545 /*7*/	{ "fstp",   EXTR,  0,		0 },
546 };
547 
548 static const struct finst db_Escc[] = {
549 /*0*/	{ "fadd",   DBLR,  op2(ST,STI),	0 },
550 /*1*/	{ "fmul",   DBLR,  op2(ST,STI),	0 },
551 /*2*/	{ "fcom",   DBLR,  0,		0 },
552 /*3*/	{ "fcomp",  DBLR,  0,		0 },
553 /*4*/	{ "fsub",   DBLR,  op2(ST,STI),	"fsubr" },
554 /*5*/	{ "fsubr",  DBLR,  op2(ST,STI),	"fsub" },
555 /*6*/	{ "fdiv",   DBLR,  op2(ST,STI),	"fdivr" },
556 /*7*/	{ "fdivr",  DBLR,  op2(ST,STI),	"fdiv" },
557 };
558 
559 static const struct finst db_Escd[] = {
560 /*0*/	{ "fld",    DBLR,  op1(STI),	"ffree" },
561 /*1*/	{ "",       NONE,  0,		0 },
562 /*2*/	{ "fst",    DBLR,  op1(STI),	0 },
563 /*3*/	{ "fstp",   DBLR,  op1(STI),	0 },
564 /*4*/	{ "frstor", NONE,  op1(STI),	"fucom" },
565 /*5*/	{ "",       NONE,  op1(STI),	"fucomp" },
566 /*6*/	{ "fnsave", NONE,  0,		0 },
567 /*7*/	{ "fnstsw", NONE,  0,		0 },
568 };
569 
570 static const struct finst db_Esce[] = {
571 /*0*/	{ "fiadd",  WORD,  op2(ST,STI),	"faddp" },
572 /*1*/	{ "fimul",  WORD,  op2(ST,STI),	"fmulp" },
573 /*2*/	{ "ficom",  WORD,  0,		0 },
574 /*3*/	{ "ficomp", WORD,  op1(X),	db_Esce3 },
575 /*4*/	{ "fisub",  WORD,  op2(ST,STI),	"fsubrp" },
576 /*5*/	{ "fisubr", WORD,  op2(ST,STI),	"fsubp" },
577 /*6*/	{ "fidiv",  WORD,  op2(ST,STI),	"fdivrp" },
578 /*7*/	{ "fidivr", WORD,  op2(ST,STI),	"fdivp" },
579 };
580 
581 static const struct finst db_Escf[] = {
582 /*0*/	{ "fild",   WORD,  0,		0 },
583 /*1*/	{ "",       NONE,  0,		0 },
584 /*2*/	{ "fist",   WORD,  0,		0 },
585 /*3*/	{ "fistp",  WORD,  0,		0 },
586 /*4*/	{ "fbld",   NONE,  op1(XA),	db_Escf4 },
587 /*5*/	{ "fild",   QUAD,  0,		0 },
588 /*6*/	{ "fbstp",  NONE,  0,		0 },
589 /*7*/	{ "fistp",  QUAD,  0,		0 },
590 };
591 
592 static const struct finst * const db_Esc_inst[] = {
593 	db_Esc8, db_Esc9, db_Esca, db_Escb,
594 	db_Escc, db_Escd, db_Esce, db_Escf
595 };
596 
597 static const char * const db_Grp1[] = {
598 	"add",
599 	"or",
600 	"adc",
601 	"sbb",
602 	"and",
603 	"sub",
604 	"xor",
605 	"cmp"
606 };
607 
608 static const char * const db_Grp2[] = {
609 	"rol",
610 	"ror",
611 	"rcl",
612 	"rcr",
613 	"shl",
614 	"shr",
615 	"shl",
616 	"sar"
617 };
618 
619 static const struct inst db_Grp3[] = {
620 	{ "test",  TRUE, NONE, op2(I,E), 0 },
621 	{ "test",  TRUE, NONE, op2(I,E), 0 },
622 	{ "not",   TRUE, NONE, op1(E),   0 },
623 	{ "neg",   TRUE, NONE, op1(E),   0 },
624 	{ "mul",   TRUE, NONE, op2(E,A), 0 },
625 	{ "imul",  TRUE, NONE, op2(E,A), 0 },
626 	{ "div",   TRUE, NONE, op2(E,A), 0 },
627 	{ "idiv",  TRUE, NONE, op2(E,A), 0 },
628 };
629 
630 static const struct inst db_Grp4[] = {
631 	{ "inc",   TRUE, BYTE, op1(E),   0 },
632 	{ "dec",   TRUE, BYTE, op1(E),   0 },
633 	{ "",      TRUE, NONE, 0,	 0 },
634 	{ "",      TRUE, NONE, 0,	 0 },
635 	{ "",      TRUE, NONE, 0,	 0 },
636 	{ "",      TRUE, NONE, 0,	 0 },
637 	{ "",      TRUE, NONE, 0,	 0 },
638 	{ "",      TRUE, NONE, 0,	 0 }
639 };
640 
641 static const struct inst db_Grp5[] = {
642 	{ "inc",   TRUE, LONG, op1(E),   0 },
643 	{ "dec",   TRUE, LONG, op1(E),   0 },
644 	{ "call",  TRUE, LONG, op1(Eind),0 },
645 	{ "lcall", TRUE, LONG, op1(Eind),0 },
646 	{ "jmp",   TRUE, LONG, op1(Eind),0 },
647 	{ "ljmp",  TRUE, LONG, op1(Eind),0 },
648 	{ "push",  TRUE, LONG, op1(E),   0 },
649 	{ "",      TRUE, NONE, 0,	 0 }
650 };
651 
652 static const struct inst db_Grp9b[] = {
653 	{ "",      TRUE, NONE, 0,	 0 },
654 	{ "",      TRUE, NONE, 0,	 0 },
655 	{ "",      TRUE, NONE, 0,	 0 },
656 	{ "",      TRUE, NONE, 0,	 0 },
657 	{ "",      TRUE, NONE, 0,	 0 },
658 	{ "",      TRUE, NONE, 0,	 0 },
659 	{ "rdrand",TRUE, LONG, op1(Rv),  0 },
660 	{ "rdseed",TRUE, LONG, op1(Rv),  0 }
661 };
662 
663 static const struct inst db_inst_table[256] = {
664 /*00*/	{ "add",   TRUE,  BYTE,  op2(R, E),  0 },
665 /*01*/	{ "add",   TRUE,  LONG,  op2(R, E),  0 },
666 /*02*/	{ "add",   TRUE,  BYTE,  op2(E, R),  0 },
667 /*03*/	{ "add",   TRUE,  LONG,  op2(E, R),  0 },
668 /*04*/	{ "add",   FALSE, BYTE,  op2(I, A),  0 },
669 /*05*/	{ "add",   FALSE, LONG,  op2(Is, A), 0 },
670 /*06*/	{ "push",  FALSE, NONE,  op1(Si),    0 },
671 /*07*/	{ "pop",   FALSE, NONE,  op1(Si),    0 },
672 
673 /*08*/	{ "or",    TRUE,  BYTE,  op2(R, E),  0 },
674 /*09*/	{ "or",    TRUE,  LONG,  op2(R, E),  0 },
675 /*0a*/	{ "or",    TRUE,  BYTE,  op2(E, R),  0 },
676 /*0b*/	{ "or",    TRUE,  LONG,  op2(E, R),  0 },
677 /*0c*/	{ "or",    FALSE, BYTE,  op2(I, A),  0 },
678 /*0d*/	{ "or",    FALSE, LONG,  op2(I, A),  0 },
679 /*0e*/	{ "push",  FALSE, NONE,  op1(Si),    0 },
680 /*0f*/	{ "",      FALSE, ESC,   0,	     db_inst_0f },
681 
682 /*10*/	{ "adc",   TRUE,  BYTE,  op2(R, E),  0 },
683 /*11*/	{ "adc",   TRUE,  LONG,  op2(R, E),  0 },
684 /*12*/	{ "adc",   TRUE,  BYTE,  op2(E, R),  0 },
685 /*13*/	{ "adc",   TRUE,  LONG,  op2(E, R),  0 },
686 /*14*/	{ "adc",   FALSE, BYTE,  op2(I, A),  0 },
687 /*15*/	{ "adc",   FALSE, LONG,  op2(Is, A), 0 },
688 /*16*/	{ "push",  FALSE, NONE,  op1(Si),    0 },
689 /*17*/	{ "pop",   FALSE, NONE,  op1(Si),    0 },
690 
691 /*18*/	{ "sbb",   TRUE,  BYTE,  op2(R, E),  0 },
692 /*19*/	{ "sbb",   TRUE,  LONG,  op2(R, E),  0 },
693 /*1a*/	{ "sbb",   TRUE,  BYTE,  op2(E, R),  0 },
694 /*1b*/	{ "sbb",   TRUE,  LONG,  op2(E, R),  0 },
695 /*1c*/	{ "sbb",   FALSE, BYTE,  op2(I, A),  0 },
696 /*1d*/	{ "sbb",   FALSE, LONG,  op2(Is, A), 0 },
697 /*1e*/	{ "push",  FALSE, NONE,  op1(Si),    0 },
698 /*1f*/	{ "pop",   FALSE, NONE,  op1(Si),    0 },
699 
700 /*20*/	{ "and",   TRUE,  BYTE,  op2(R, E),  0 },
701 /*21*/	{ "and",   TRUE,  LONG,  op2(R, E),  0 },
702 /*22*/	{ "and",   TRUE,  BYTE,  op2(E, R),  0 },
703 /*23*/	{ "and",   TRUE,  LONG,  op2(E, R),  0 },
704 /*24*/	{ "and",   FALSE, BYTE,  op2(I, A),  0 },
705 /*25*/	{ "and",   FALSE, LONG,  op2(I, A),  0 },
706 /*26*/	{ "",      FALSE, NONE,  0,	     0 },
707 /*27*/	{ "daa",   FALSE, NONE,  0,	     0 },
708 
709 /*28*/	{ "sub",   TRUE,  BYTE,  op2(R, E),  0 },
710 /*29*/	{ "sub",   TRUE,  LONG,  op2(R, E),  0 },
711 /*2a*/	{ "sub",   TRUE,  BYTE,  op2(E, R),  0 },
712 /*2b*/	{ "sub",   TRUE,  LONG,  op2(E, R),  0 },
713 /*2c*/	{ "sub",   FALSE, BYTE,  op2(I, A),  0 },
714 /*2d*/	{ "sub",   FALSE, LONG,  op2(Is, A), 0 },
715 /*2e*/	{ "",      FALSE, NONE,  0,	     0 },
716 /*2f*/	{ "das",   FALSE, NONE,  0,	     0 },
717 
718 /*30*/	{ "xor",   TRUE,  BYTE,  op2(R, E),  0 },
719 /*31*/	{ "xor",   TRUE,  LONG,  op2(R, E),  0 },
720 /*32*/	{ "xor",   TRUE,  BYTE,  op2(E, R),  0 },
721 /*33*/	{ "xor",   TRUE,  LONG,  op2(E, R),  0 },
722 /*34*/	{ "xor",   FALSE, BYTE,  op2(I, A),  0 },
723 /*35*/	{ "xor",   FALSE, LONG,  op2(I, A),  0 },
724 /*36*/	{ "",      FALSE, NONE,  0,	     0 },
725 /*37*/	{ "aaa",   FALSE, NONE,  0,	     0 },
726 
727 /*38*/	{ "cmp",   TRUE,  BYTE,  op2(R, E),  0 },
728 /*39*/	{ "cmp",   TRUE,  LONG,  op2(R, E),  0 },
729 /*3a*/	{ "cmp",   TRUE,  BYTE,  op2(E, R),  0 },
730 /*3b*/	{ "cmp",   TRUE,  LONG,  op2(E, R),  0 },
731 /*3c*/	{ "cmp",   FALSE, BYTE,  op2(I, A),  0 },
732 /*3d*/	{ "cmp",   FALSE, LONG,  op2(Is, A), 0 },
733 /*3e*/	{ "",      FALSE, NONE,  0,	     0 },
734 /*3f*/	{ "aas",   FALSE, NONE,  0,	     0 },
735 
736 /*40*/	{ "rex",   FALSE, NONE,  0,          0 },
737 /*41*/	{ "rex.b", FALSE, NONE,  0,          0 },
738 /*42*/	{ "rex.x", FALSE, NONE,  0,          0 },
739 /*43*/	{ "rex.xb", FALSE, NONE, 0,          0 },
740 /*44*/	{ "rex.r", FALSE, NONE,  0,          0 },
741 /*45*/	{ "rex.rb", FALSE, NONE, 0,          0 },
742 /*46*/	{ "rex.rx", FALSE, NONE, 0,          0 },
743 /*47*/	{ "rex.rxb", FALSE, NONE, 0,         0 },
744 
745 /*48*/	{ "rex.w", FALSE, NONE,  0,          0 },
746 /*49*/	{ "rex.wb", FALSE, NONE, 0,          0 },
747 /*4a*/	{ "rex.wx", FALSE, NONE, 0,          0 },
748 /*4b*/	{ "rex.wxb", FALSE, NONE, 0,         0 },
749 /*4c*/	{ "rex.wr", FALSE, NONE, 0,          0 },
750 /*4d*/	{ "rex.wrb", FALSE, NONE, 0,         0 },
751 /*4e*/	{ "rex.wrx", FALSE, NONE, 0,         0 },
752 /*4f*/	{ "rex.wrxb", FALSE, NONE, 0,        0 },
753 
754 /*50*/	{ "push",  FALSE, LONG,  op1(Ri),    0 },
755 /*51*/	{ "push",  FALSE, LONG,  op1(Ri),    0 },
756 /*52*/	{ "push",  FALSE, LONG,  op1(Ri),    0 },
757 /*53*/	{ "push",  FALSE, LONG,  op1(Ri),    0 },
758 /*54*/	{ "push",  FALSE, LONG,  op1(Ri),    0 },
759 /*55*/	{ "push",  FALSE, LONG,  op1(Ri),    0 },
760 /*56*/	{ "push",  FALSE, LONG,  op1(Ri),    0 },
761 /*57*/	{ "push",  FALSE, LONG,  op1(Ri),    0 },
762 
763 /*58*/	{ "pop",   FALSE, LONG,  op1(Ri),    0 },
764 /*59*/	{ "pop",   FALSE, LONG,  op1(Ri),    0 },
765 /*5a*/	{ "pop",   FALSE, LONG,  op1(Ri),    0 },
766 /*5b*/	{ "pop",   FALSE, LONG,  op1(Ri),    0 },
767 /*5c*/	{ "pop",   FALSE, LONG,  op1(Ri),    0 },
768 /*5d*/	{ "pop",   FALSE, LONG,  op1(Ri),    0 },
769 /*5e*/	{ "pop",   FALSE, LONG,  op1(Ri),    0 },
770 /*5f*/	{ "pop",   FALSE, LONG,  op1(Ri),    0 },
771 
772 /*60*/	{ "pusha", FALSE, LONG,  0,	     0 },
773 /*61*/	{ "popa",  FALSE, LONG,  0,	     0 },
774 /*62*/  { "bound", TRUE,  LONG,  op2(E, R),  0 },
775 /*63*/	{ "movslq",  TRUE,  NONE,  op2(EL,R), 0 },
776 
777 /*64*/	{ "",      FALSE, NONE,  0,	     0 },
778 /*65*/	{ "",      FALSE, NONE,  0,	     0 },
779 /*66*/	{ "",      FALSE, NONE,  0,	     0 },
780 /*67*/	{ "",      FALSE, NONE,  0,	     0 },
781 
782 /*68*/	{ "push",  FALSE, LONG,  op1(I),     0 },
783 /*69*/  { "imul",  TRUE,  LONG,  op3(I,E,R), 0 },
784 /*6a*/	{ "push",  FALSE, LONG,  op1(Ibs),   0 },
785 /*6b*/  { "imul",  TRUE,  LONG,  op3(Ibs,E,R),0 },
786 /*6c*/	{ "ins",   FALSE, BYTE,  op2(DX, DI), 0 },
787 /*6d*/	{ "ins",   FALSE, LONG,  op2(DX, DI), 0 },
788 /*6e*/	{ "outs",  FALSE, BYTE,  op2(SI, DX), 0 },
789 /*6f*/	{ "outs",  FALSE, LONG,  op2(SI, DX), 0 },
790 
791 /*70*/	{ "jo",    FALSE, NONE,  op1(Db),     0 },
792 /*71*/	{ "jno",   FALSE, NONE,  op1(Db),     0 },
793 /*72*/	{ "jb",    FALSE, NONE,  op1(Db),     0 },
794 /*73*/	{ "jnb",   FALSE, NONE,  op1(Db),     0 },
795 /*74*/	{ "jz",    FALSE, NONE,  op1(Db),     0 },
796 /*75*/	{ "jnz",   FALSE, NONE,  op1(Db),     0 },
797 /*76*/	{ "jbe",   FALSE, NONE,  op1(Db),     0 },
798 /*77*/	{ "jnbe",  FALSE, NONE,  op1(Db),     0 },
799 
800 /*78*/	{ "js",    FALSE, NONE,  op1(Db),     0 },
801 /*79*/	{ "jns",   FALSE, NONE,  op1(Db),     0 },
802 /*7a*/	{ "jp",    FALSE, NONE,  op1(Db),     0 },
803 /*7b*/	{ "jnp",   FALSE, NONE,  op1(Db),     0 },
804 /*7c*/	{ "jl",    FALSE, NONE,  op1(Db),     0 },
805 /*7d*/	{ "jnl",   FALSE, NONE,  op1(Db),     0 },
806 /*7e*/	{ "jle",   FALSE, NONE,  op1(Db),     0 },
807 /*7f*/	{ "jnle",  FALSE, NONE,  op1(Db),     0 },
808 
809 /*80*/  { "",	   TRUE,  BYTE,  op2(I, E),   db_Grp1 },
810 /*81*/  { "",	   TRUE,  LONG,  op2(I, E),   db_Grp1 },
811 /*82*/  { "",	   TRUE,  BYTE,  op2(I, E),   db_Grp1 },
812 /*83*/  { "",	   TRUE,  LONG,  op2(Ibs,E),  db_Grp1 },
813 /*84*/	{ "test",  TRUE,  BYTE,  op2(R, E),   0 },
814 /*85*/	{ "test",  TRUE,  LONG,  op2(R, E),   0 },
815 /*86*/	{ "xchg",  TRUE,  BYTE,  op2(R, E),   0 },
816 /*87*/	{ "xchg",  TRUE,  LONG,  op2(R, E),   0 },
817 
818 /*88*/	{ "mov",   TRUE,  BYTE,  op2(R, E),   0 },
819 /*89*/	{ "mov",   TRUE,  LONG,  op2(R, E),   0 },
820 /*8a*/	{ "mov",   TRUE,  BYTE,  op2(E, R),   0 },
821 /*8b*/	{ "mov",   TRUE,  LONG,  op2(E, R),   0 },
822 /*8c*/  { "mov",   TRUE,  NONE,  op2(S, Ew),  0 },
823 /*8d*/	{ "lea",   TRUE,  LONG,  op2(E, R),   0 },
824 /*8e*/	{ "mov",   TRUE,  NONE,  op2(Ew, S),  0 },
825 /*8f*/	{ "pop",   TRUE,  LONG,  op1(E),      0 },
826 
827 /*90*/	{ "nop",   FALSE, NONE,  0,	      0 },
828 /*91*/	{ "xchg",  FALSE, LONG,  op2(A, Ri),  0 },
829 /*92*/	{ "xchg",  FALSE, LONG,  op2(A, Ri),  0 },
830 /*93*/	{ "xchg",  FALSE, LONG,  op2(A, Ri),  0 },
831 /*94*/	{ "xchg",  FALSE, LONG,  op2(A, Ri),  0 },
832 /*95*/	{ "xchg",  FALSE, LONG,  op2(A, Ri),  0 },
833 /*96*/	{ "xchg",  FALSE, LONG,  op2(A, Ri),  0 },
834 /*97*/	{ "xchg",  FALSE, LONG,  op2(A, Ri),  0 },
835 
836 /*98*/	{ "cwde",  FALSE, SDEP,  0,	      "cbw" },
837 /*99*/	{ "cdq",   FALSE, SDEP,  0,	      "cwd" },
838 /*9a*/	{ "lcall", FALSE, NONE,  op1(OS),     0 },
839 /*9b*/	{ "wait",  FALSE, NONE,  0,	      0 },
840 /*9c*/	{ "pushf", FALSE, LONG,  0,	      0 },
841 /*9d*/	{ "popf",  FALSE, LONG,  0,	      0 },
842 /*9e*/	{ "sahf",  FALSE, NONE,  0,	      0 },
843 /*9f*/	{ "lahf",  FALSE, NONE,  0,	      0 },
844 
845 /*a0*/	{ "mov",   FALSE, BYTE,  op2(O, A),   0 },
846 /*a1*/	{ "mov",   FALSE, LONG,  op2(O, A),   0 },
847 /*a2*/	{ "mov",   FALSE, BYTE,  op2(A, O),   0 },
848 /*a3*/	{ "mov",   FALSE, LONG,  op2(A, O),   0 },
849 /*a4*/	{ "movs",  FALSE, BYTE,  op2(SI,DI),  0 },
850 /*a5*/	{ "movs",  FALSE, LONG,  op2(SI,DI),  0 },
851 /*a6*/	{ "cmps",  FALSE, BYTE,  op2(SI,DI),  0 },
852 /*a7*/	{ "cmps",  FALSE, LONG,  op2(SI,DI),  0 },
853 
854 /*a8*/	{ "test",  FALSE, BYTE,  op2(I, A),   0 },
855 /*a9*/	{ "test",  FALSE, LONG,  op2(I, A),   0 },
856 /*aa*/	{ "stos",  FALSE, BYTE,  op1(DI),     0 },
857 /*ab*/	{ "stos",  FALSE, LONG,  op1(DI),     0 },
858 /*ac*/	{ "lods",  FALSE, BYTE,  op1(SI),     0 },
859 /*ad*/	{ "lods",  FALSE, LONG,  op1(SI),     0 },
860 /*ae*/	{ "scas",  FALSE, BYTE,  op1(SI),     0 },
861 /*af*/	{ "scas",  FALSE, LONG,  op1(SI),     0 },
862 
863 /*b0*/	{ "mov",   FALSE, BYTE,  op2(I, Ri),  0 },
864 /*b1*/	{ "mov",   FALSE, BYTE,  op2(I, Ri),  0 },
865 /*b2*/	{ "mov",   FALSE, BYTE,  op2(I, Ri),  0 },
866 /*b3*/	{ "mov",   FALSE, BYTE,  op2(I, Ri),  0 },
867 /*b4*/	{ "mov",   FALSE, BYTE,  op2(I, Ri),  0 },
868 /*b5*/	{ "mov",   FALSE, BYTE,  op2(I, Ri),  0 },
869 /*b6*/	{ "mov",   FALSE, BYTE,  op2(I, Ri),  0 },
870 /*b7*/	{ "mov",   FALSE, BYTE,  op2(I, Ri),  0 },
871 
872 /*b8*/	{ "mov",   FALSE, LONG,  op2(Ilq, Ri),  0 },
873 /*b9*/	{ "mov",   FALSE, LONG,  op2(Ilq, Ri),  0 },
874 /*ba*/	{ "mov",   FALSE, LONG,  op2(Ilq, Ri),  0 },
875 /*bb*/	{ "mov",   FALSE, LONG,  op2(Ilq, Ri),  0 },
876 /*bc*/	{ "mov",   FALSE, LONG,  op2(Ilq, Ri),  0 },
877 /*bd*/	{ "mov",   FALSE, LONG,  op2(Ilq, Ri),  0 },
878 /*be*/	{ "mov",   FALSE, LONG,  op2(Ilq, Ri),  0 },
879 /*bf*/	{ "mov",   FALSE, LONG,  op2(Ilq, Ri),  0 },
880 
881 /*c0*/	{ "",	   TRUE,  BYTE,  op2(Ib, E),  db_Grp2 },
882 /*c1*/	{ "",	   TRUE,  LONG,  op2(Ib, E),  db_Grp2 },
883 /*c2*/	{ "ret",   FALSE, NONE,  op1(Iw),     0 },
884 /*c3*/	{ "ret",   FALSE, NONE,  0,	      0 },
885 /*c4*/	{ "les",   TRUE,  LONG,  op2(E, R),   0 },
886 /*c5*/	{ "lds",   TRUE,  LONG,  op2(E, R),   0 },
887 /*c6*/	{ "mov",   TRUE,  BYTE,  op2(I, E),   0 },
888 /*c7*/	{ "mov",   TRUE,  LONG,  op2(I, E),   0 },
889 
890 /*c8*/	{ "enter", FALSE, NONE,  op2(Iw, Ib), 0 },
891 /*c9*/	{ "leave", FALSE, NONE,  0,           0 },
892 /*ca*/	{ "lret",  FALSE, NONE,  op1(Iw),     0 },
893 /*cb*/	{ "lret",  FALSE, NONE,  0,	      0 },
894 /*cc*/	{ "int",   FALSE, NONE,  op1(o3),     0 },
895 /*cd*/	{ "int",   FALSE, NONE,  op1(Ib),     0 },
896 /*ce*/	{ "into",  FALSE, NONE,  0,	      0 },
897 /*cf*/	{ "iret",  FALSE, NONE,  0,	      0 },
898 
899 /*d0*/	{ "",	   TRUE,  BYTE,  op2(o1, E),  db_Grp2 },
900 /*d1*/	{ "",	   TRUE,  LONG,  op2(o1, E),  db_Grp2 },
901 /*d2*/	{ "",	   TRUE,  BYTE,  op2(CL, E),  db_Grp2 },
902 /*d3*/	{ "",	   TRUE,  LONG,  op2(CL, E),  db_Grp2 },
903 /*d4*/	{ "aam",   FALSE, NONE,  op1(Iba),    0 },
904 /*d5*/	{ "aad",   FALSE, NONE,  op1(Iba),    0 },
905 /*d6*/	{ ".byte\t0xd6", FALSE, NONE, 0,      0 },
906 /*d7*/	{ "xlat",  FALSE, BYTE,  op1(BX),     0 },
907 
908 /*d8*/  { "",      TRUE,  NONE,  0,	      db_Esc8 },
909 /*d9*/  { "",      TRUE,  NONE,  0,	      db_Esc9 },
910 /*da*/  { "",      TRUE,  NONE,  0,	      db_Esca },
911 /*db*/  { "",      TRUE,  NONE,  0,	      db_Escb },
912 /*dc*/  { "",      TRUE,  NONE,  0,	      db_Escc },
913 /*dd*/  { "",      TRUE,  NONE,  0,	      db_Escd },
914 /*de*/  { "",      TRUE,  NONE,  0,	      db_Esce },
915 /*df*/  { "",      TRUE,  NONE,  0,	      db_Escf },
916 
917 /*e0*/	{ "loopne",FALSE, NONE,  op1(Db),     0 },
918 /*e1*/	{ "loope", FALSE, NONE,  op1(Db),     0 },
919 /*e2*/	{ "loop",  FALSE, NONE,  op1(Db),     0 },
920 /*e3*/	{ "jrcxz", FALSE, ADEP,  op1(Db),     "jecxz" },
921 /*e4*/	{ "in",    FALSE, BYTE,  op2(Ib, A),  0 },
922 /*e5*/	{ "in",    FALSE, LONG,  op2(Ib, A) , 0 },
923 /*e6*/	{ "out",   FALSE, BYTE,  op2(A, Ib),  0 },
924 /*e7*/	{ "out",   FALSE, LONG,  op2(A, Ib) , 0 },
925 
926 /*e8*/	{ "call",  FALSE, NONE,  op1(Dl),     0 },
927 /*e9*/	{ "jmp",   FALSE, NONE,  op1(Dl),     0 },
928 /*ea*/	{ "ljmp",  FALSE, NONE,  op1(OS),     0 },
929 /*eb*/	{ "jmp",   FALSE, NONE,  op1(Db),     0 },
930 /*ec*/	{ "in",    FALSE, BYTE,  op2(DX, A),  0 },
931 /*ed*/	{ "in",    FALSE, LONG,  op2(DX, A) , 0 },
932 /*ee*/	{ "out",   FALSE, BYTE,  op2(A, DX),  0 },
933 /*ef*/	{ "out",   FALSE, LONG,  op2(A, DX) , 0 },
934 
935 /*f0*/	{ "",      FALSE, NONE,  0,	     0 },
936 /*f1*/	{ ".byte\t0xf1", FALSE, NONE, 0,     0 },
937 /*f2*/	{ "",      FALSE, NONE,  0,	     0 },
938 /*f3*/	{ "",      FALSE, NONE,  0,	     0 },
939 /*f4*/	{ "hlt",   FALSE, NONE,  0,	     0 },
940 /*f5*/	{ "cmc",   FALSE, NONE,  0,	     0 },
941 /*f6*/	{ "",      TRUE,  BYTE,  0,	     db_Grp3 },
942 /*f7*/	{ "",	   TRUE,  LONG,  0,	     db_Grp3 },
943 
944 /*f8*/	{ "clc",   FALSE, NONE,  0,	     0 },
945 /*f9*/	{ "stc",   FALSE, NONE,  0,	     0 },
946 /*fa*/	{ "cli",   FALSE, NONE,  0,	     0 },
947 /*fb*/	{ "sti",   FALSE, NONE,  0,	     0 },
948 /*fc*/	{ "cld",   FALSE, NONE,  0,	     0 },
949 /*fd*/	{ "std",   FALSE, NONE,  0,	     0 },
950 /*fe*/	{ "",	   TRUE,  NONE,  0,	     db_Grp4 },
951 /*ff*/	{ "",	   TRUE,  NONE,  0,	     db_Grp5 },
952 };
953 
954 static const struct inst db_bad_inst =
955 	{ "???",   FALSE, NONE,  0,	      0 }
956 ;
957 
958 #define	f_mod(rex, byte)	((byte)>>6)
959 #define	f_reg(rex, byte)	((((byte)>>3)&0x7) | (rex & REX_R ? 0x8 : 0x0))
960 #define	f_rm(rex, byte)		(((byte)&0x7) | (rex & REX_B ? 0x8 : 0x0))
961 
962 #define	sib_ss(rex, byte)	((byte)>>6)
963 #define	sib_index(rex, byte)	((((byte)>>3)&0x7) | (rex & REX_X ? 0x8 : 0x0))
964 #define	sib_base(rex, byte)	(((byte)&0x7) | (rex & REX_B ? 0x8 : 0x0))
965 
966 struct i_addr {
967 	int		is_reg;	/* if reg, reg number is in 'disp' */
968 	int		disp;
969 	const char *	base;
970 	const char *	index;
971 	int		ss;
972 };
973 
974 static const char * const db_reg[2][4][16] = {
975 
976 	{{"%al",  "%cl",  "%dl",  "%bl",  "%ah",  "%ch",  "%dh",  "%bh",
977 	  "%r8b", "%r9b", "%r10b", "%r11b", "%r12b", "%r13b", "%r14b", "%r15b" },
978 	{ "%ax",  "%cx",  "%dx",  "%bx",  "%sp",  "%bp",  "%si",  "%di",
979 	  "%r8w", "%r9w", "%r10w", "%r11w", "%r12w", "%r13w", "%r14w", "%r15w" },
980 	{ "%eax", "%ecx", "%edx", "%ebx", "%esp", "%ebp", "%esi", "%edi",
981 	  "%r8d", "%r9d", "%r10d", "%r11d", "%r12d", "%r13d", "%r14d", "%r15d" },
982 	{ "%rax", "%rcx", "%rdx", "%rbx", "%rsp", "%rbp", "%rsi", "%rdi",
983 	  "%r8", "%r9", "%r10", "%r11", "%r12", "%r13", "%r14", "%r15" }},
984 
985 	{{"%al",  "%cl",  "%dl",  "%bl",  "%spl",  "%bpl",  "%sil",  "%dil",
986 	  "%r8b", "%r9b", "%r10b", "%r11b", "%r12b", "%r13b", "%r14b", "%r15b" },
987 	{ "%ax",  "%cx",  "%dx",  "%bx",  "%sp",  "%bp",  "%si",  "%di",
988 	  "%r8w", "%r9w", "%r10w", "%r11w", "%r12w", "%r13w", "%r14w", "%r15w" },
989 	{ "%eax", "%ecx", "%edx", "%ebx", "%esp", "%ebp", "%esi", "%edi",
990 	  "%r8d", "%r9d", "%r10d", "%r11d", "%r12d", "%r13d", "%r14d", "%r15d" },
991 	{ "%rax", "%rcx", "%rdx", "%rbx", "%rsp", "%rbp", "%rsi", "%rdi",
992 	  "%r8", "%r9", "%r10", "%r11", "%r12", "%r13", "%r14", "%r15" }}
993 };
994 
995 static const char * const db_seg_reg[8] = {
996 	"%es", "%cs", "%ss", "%ds", "%fs", "%gs", "", ""
997 };
998 
999 /*
1000  * lengths for size attributes
1001  */
1002 static const int db_lengths[] = {
1003 	1,	/* BYTE */
1004 	2,	/* WORD */
1005 	4,	/* LONG */
1006 	8,	/* QUAD */
1007 	4,	/* SNGL */
1008 	8,	/* DBLR */
1009 	10,	/* EXTR */
1010 };
1011 
1012 #define	get_value_inc(result, loc, size, is_signed) \
1013 	result = db_get_value((loc), (size), (is_signed)); \
1014 	(loc) += (size);
1015 
1016 static db_addr_t
1017 		db_disasm_esc(db_addr_t loc, int inst, int rex, int short_addr,
1018 		    int size, const char *seg);
1019 static void	db_print_address(const char *seg, int size, int rex,
1020 		    struct i_addr *addrp);
1021 static db_addr_t
1022 		db_read_address(db_addr_t loc, int short_addr, int rex, int regmodrm,
1023 		    struct i_addr *addrp);
1024 
1025 /*
1026  * Read address at location and return updated location.
1027  */
1028 static db_addr_t
1029 db_read_address(loc, short_addr, rex, regmodrm, addrp)
1030 	db_addr_t	loc;
1031 	int		short_addr;
1032 	int		rex;
1033 	int		regmodrm;
1034 	struct i_addr *	addrp;		/* out */
1035 {
1036 	int		mod, rm, sib, index, disp, size, have_sib;
1037 
1038 	mod = f_mod(rex, regmodrm);
1039 	rm  = f_rm(rex, regmodrm);
1040 
1041 	if (mod == 3) {
1042 	    addrp->is_reg = TRUE;
1043 	    addrp->disp = rm;
1044 	    return (loc);
1045 	}
1046 	addrp->is_reg = FALSE;
1047 	addrp->index = NULL;
1048 
1049 	if (short_addr)
1050 	    size = LONG;
1051 	else
1052 	    size = QUAD;
1053 
1054 	if ((rm & 0x7) == 4) {
1055 	    get_value_inc(sib, loc, 1, FALSE);
1056 	    rm = sib_base(rex, sib);
1057 	    index = sib_index(rex, sib);
1058 	    if (index != 4)
1059 		addrp->index = db_reg[1][size][index];
1060 	    addrp->ss = sib_ss(rex, sib);
1061 	    have_sib = 1;
1062 	} else
1063 	    have_sib = 0;
1064 
1065 	switch (mod) {
1066 	    case 0:
1067 		if (rm == 5) {
1068 		    get_value_inc(addrp->disp, loc, 4, FALSE);
1069 		    if (have_sib)
1070 			addrp->base = NULL;
1071 		    else if (short_addr)
1072 			addrp->base = "%eip";
1073 		    else
1074 			addrp->base = "%rip";
1075 		} else {
1076 		    addrp->disp = 0;
1077 		    addrp->base = db_reg[1][size][rm];
1078 		}
1079 		break;
1080 
1081 	    case 1:
1082 		get_value_inc(disp, loc, 1, TRUE);
1083 		addrp->disp = disp;
1084 		addrp->base = db_reg[1][size][rm];
1085 		break;
1086 
1087 	    case 2:
1088 		get_value_inc(disp, loc, 4, FALSE);
1089 		addrp->disp = disp;
1090 		addrp->base = db_reg[1][size][rm];
1091 		break;
1092 	}
1093 	return (loc);
1094 }
1095 
1096 static void
1097 db_print_address(seg, size, rex, addrp)
1098 	const char *	seg;
1099 	int		size;
1100 	int		rex;
1101 	struct i_addr *	addrp;
1102 {
1103 	if (addrp->is_reg) {
1104 	    db_printf("%s", db_reg[rex != 0 ? 1 : 0][(size == LONG && (rex & REX_W)) ? QUAD : size][addrp->disp]);
1105 	    return;
1106 	}
1107 
1108 	if (seg) {
1109 	    db_printf("%s:", seg);
1110 	}
1111 
1112 	if (addrp->disp != 0 || (addrp->base == NULL && addrp->index == NULL))
1113 		db_printsym((db_addr_t)addrp->disp, DB_STGY_ANY);
1114 	if (addrp->base != NULL || addrp->index != NULL) {
1115 	    db_printf("(");
1116 	    if (addrp->base)
1117 		db_printf("%s", addrp->base);
1118 	    if (addrp->index)
1119 		db_printf(",%s,%d", addrp->index, 1<<addrp->ss);
1120 	    db_printf(")");
1121 	}
1122 }
1123 
1124 /*
1125  * Disassemble floating-point ("escape") instruction
1126  * and return updated location.
1127  */
1128 static db_addr_t
1129 db_disasm_esc(loc, inst, rex, short_addr, size, seg)
1130 	db_addr_t	loc;
1131 	int		inst;
1132 	int		rex;
1133 	int		short_addr;
1134 	int		size;
1135 	const char *	seg;
1136 {
1137 	int		regmodrm;
1138 	const struct finst *	fp;
1139 	int		mod;
1140 	struct i_addr	address;
1141 	const char *	name;
1142 
1143 	get_value_inc(regmodrm, loc, 1, FALSE);
1144 	fp = &db_Esc_inst[inst - 0xd8][f_reg(rex, regmodrm)];
1145 	mod = f_mod(rex, regmodrm);
1146 	if (mod != 3) {
1147 	    if (*fp->f_name == '\0') {
1148 		db_printf("<bad instruction>");
1149 		return (loc);
1150 	    }
1151 	    /*
1152 	     * Normal address modes.
1153 	     */
1154 	    loc = db_read_address(loc, short_addr, rex, regmodrm, &address);
1155 	    db_printf("%s", fp->f_name);
1156 	    switch(fp->f_size) {
1157 		case SNGL:
1158 		    db_printf("s");
1159 		    break;
1160 		case DBLR:
1161 		    db_printf("l");
1162 		    break;
1163 		case EXTR:
1164 		    db_printf("t");
1165 		    break;
1166 		case WORD:
1167 		    db_printf("s");
1168 		    break;
1169 		case LONG:
1170 		    db_printf("l");
1171 		    break;
1172 		case QUAD:
1173 		    db_printf("q");
1174 		    break;
1175 		default:
1176 		    break;
1177 	    }
1178 	    db_printf("\t");
1179 	    db_print_address(seg, BYTE, rex, &address);
1180 	}
1181 	else {
1182 	    /*
1183 	     * 'reg-reg' - special formats
1184 	     */
1185 	    switch (fp->f_rrmode) {
1186 		case op2(ST,STI):
1187 		    name = (fp->f_rrname) ? fp->f_rrname : fp->f_name;
1188 		    db_printf("%s\t%%st,%%st(%d)",name,f_rm(rex, regmodrm));
1189 		    break;
1190 		case op2(STI,ST):
1191 		    name = (fp->f_rrname) ? fp->f_rrname : fp->f_name;
1192 		    db_printf("%s\t%%st(%d),%%st",name, f_rm(rex, regmodrm));
1193 		    break;
1194 		case op1(STI):
1195 		    name = (fp->f_rrname) ? fp->f_rrname : fp->f_name;
1196 		    db_printf("%s\t%%st(%d)",name, f_rm(rex, regmodrm));
1197 		    break;
1198 		case op1(X):
1199 		    name = ((const char * const *)fp->f_rrname)[f_rm(rex, regmodrm)];
1200 		    if (*name == '\0')
1201 			goto bad;
1202 		    db_printf("%s", name);
1203 		    break;
1204 		case op1(XA):
1205 		    name = ((const char * const *)fp->f_rrname)[f_rm(rex, regmodrm)];
1206 		    if (*name == '\0')
1207 			goto bad;
1208 		    db_printf("%s\t%%ax", name);
1209 		    break;
1210 		default:
1211 		bad:
1212 		    db_printf("<bad instruction>");
1213 		    break;
1214 	    }
1215 	}
1216 
1217 	return (loc);
1218 }
1219 
1220 /*
1221  * Disassemble instruction at 'loc'.  'altfmt' specifies an
1222  * (optional) alternate format.  Return address of start of
1223  * next instruction.
1224  */
1225 db_addr_t
1226 db_disasm(db_addr_t loc, bool altfmt)
1227 {
1228 	int	inst;
1229 	int	size;
1230 	int	short_addr;
1231 	const char *	seg;
1232 	const struct inst *	ip;
1233 	const char *	i_name;
1234 	int	i_size;
1235 	int	i_mode;
1236 	int	rex = 0;
1237 	int	regmodrm = 0;
1238 	boolean_t	first;
1239 	int	displ;
1240 	int	prefix;
1241 	int	rep;
1242 	int	imm;
1243 	int	imm2;
1244 	long	imm64;
1245 	int	len;
1246 	struct i_addr	address;
1247 
1248 	get_value_inc(inst, loc, 1, FALSE);
1249 	short_addr = FALSE;
1250 	size = LONG;
1251 	seg = NULL;
1252 
1253 	/*
1254 	 * Get prefixes
1255 	 */
1256 	rep = FALSE;
1257 	prefix = TRUE;
1258 	do {
1259 	    switch (inst) {
1260 		case 0x66:		/* data16 */
1261 		    size = WORD;
1262 		    break;
1263 		case 0x67:
1264 		    short_addr = TRUE;
1265 		    break;
1266 		case 0x26:
1267 		    seg = "%es";
1268 		    break;
1269 		case 0x36:
1270 		    seg = "%ss";
1271 		    break;
1272 		case 0x2e:
1273 		    seg = "%cs";
1274 		    break;
1275 		case 0x3e:
1276 		    seg = "%ds";
1277 		    break;
1278 		case 0x64:
1279 		    seg = "%fs";
1280 		    break;
1281 		case 0x65:
1282 		    seg = "%gs";
1283 		    break;
1284 		case 0xf0:
1285 		    db_printf("lock ");
1286 		    break;
1287 		case 0xf2:
1288 		    db_printf("repne ");
1289 		    break;
1290 		case 0xf3:
1291 		    rep = TRUE;
1292 		    break;
1293 		default:
1294 		    prefix = FALSE;
1295 		    break;
1296 	    }
1297 	    if (inst >= 0x40 && inst < 0x50) {
1298 		rex = inst;
1299 		prefix = TRUE;
1300 	    }
1301 	    if (prefix) {
1302 		get_value_inc(inst, loc, 1, FALSE);
1303 	    }
1304 	} while (prefix);
1305 
1306 	if (inst >= 0xd8 && inst <= 0xdf) {
1307 	    loc = db_disasm_esc(loc, inst, rex, short_addr, size, seg);
1308 	    db_printf("\n");
1309 	    return (loc);
1310 	}
1311 
1312 	ip = &db_inst_table[inst];
1313 	while (ip->i_size == ESC) {
1314 	    get_value_inc(inst, loc, 1, FALSE);
1315 	    ip = ((const struct inst * const *)ip->i_extra)[inst>>4];
1316 	    if (ip == NULL) {
1317 		ip = &db_bad_inst;
1318 	    }
1319 	    else {
1320 		ip = &ip[inst&0xf];
1321 	    }
1322 	}
1323 
1324 	if (ip->i_has_modrm) {
1325 	    get_value_inc(regmodrm, loc, 1, FALSE);
1326 	    loc = db_read_address(loc, short_addr, rex, regmodrm, &address);
1327 	}
1328 
1329 	i_name = ip->i_name;
1330 	i_size = ip->i_size;
1331 	i_mode = ip->i_mode;
1332 
1333 	if (ip->i_extra == db_Grp9 && f_mod(rex, regmodrm) == 3) {
1334 	    ip = &db_Grp9b[f_reg(rex, regmodrm)];
1335 	    i_name = ip->i_name;
1336 	    i_size = ip->i_size;
1337 	    i_mode = ip->i_mode;
1338 	}
1339 	else if (ip->i_extra == db_Grp1 || ip->i_extra == db_Grp2 ||
1340 	    ip->i_extra == db_Grp6 || ip->i_extra == db_Grp7 ||
1341 	    ip->i_extra == db_Grp8 || ip->i_extra == db_Grp9 ||
1342 	    ip->i_extra == db_Grp15) {
1343 	    i_name = ((const char * const *)ip->i_extra)[f_reg(rex, regmodrm)];
1344 	}
1345 	else if (ip->i_extra == db_Grp3) {
1346 	    ip = ip->i_extra;
1347 	    ip = &ip[f_reg(rex, regmodrm)];
1348 	    i_name = ip->i_name;
1349 	    i_mode = ip->i_mode;
1350 	}
1351 	else if (ip->i_extra == db_Grp4 || ip->i_extra == db_Grp5) {
1352 	    ip = ip->i_extra;
1353 	    ip = &ip[f_reg(rex, regmodrm)];
1354 	    i_name = ip->i_name;
1355 	    i_mode = ip->i_mode;
1356 	    i_size = ip->i_size;
1357 	}
1358 
1359 	/* Special cases that don't fit well in the tables. */
1360 	if (ip->i_extra == db_Grp7 && f_mod(rex, regmodrm) == 3) {
1361 		switch (regmodrm) {
1362 		case 0xc1:
1363 			i_name = "vmcall";
1364 			i_size = NONE;
1365 			i_mode = 0;
1366 			break;
1367 		case 0xc2:
1368 			i_name = "vmlaunch";
1369 			i_size = NONE;
1370 			i_mode = 0;
1371 			break;
1372 		case 0xc3:
1373 			i_name = "vmresume";
1374 			i_size = NONE;
1375 			i_mode = 0;
1376 			break;
1377 		case 0xc4:
1378 			i_name = "vmxoff";
1379 			i_size = NONE;
1380 			i_mode = 0;
1381 			break;
1382 		case 0xc8:
1383 			i_name = "monitor";
1384 			i_size = NONE;
1385 			i_mode = 0;
1386 			break;
1387 		case 0xc9:
1388 			i_name = "mwait";
1389 			i_size = NONE;
1390 			i_mode = 0;
1391 			break;
1392 		case 0xca:
1393 			i_name = "clac";
1394 			i_size = NONE;
1395 			i_mode = 0;
1396 			break;
1397 		case 0xcb:
1398 			i_name = "stac";
1399 			i_size = NONE;
1400 			i_mode = 0;
1401 			break;
1402 		case 0xd0:
1403 			i_name = "xgetbv";
1404 			i_size = NONE;
1405 			i_mode = 0;
1406 			break;
1407 		case 0xd1:
1408 			i_name = "xsetbv";
1409 			i_size = NONE;
1410 			i_mode = 0;
1411 			break;
1412 		case 0xd8:
1413 			i_name = "vmrun";
1414 			i_size = NONE;
1415 			i_mode = 0;
1416 			break;
1417 		case 0xd9:
1418 			i_name = "vmmcall";
1419 			i_size = NONE;
1420 			i_mode = 0;
1421 			break;
1422 		case 0xda:
1423 			i_name = "vmload";
1424 			i_size = NONE;
1425 			i_mode = 0;
1426 			break;
1427 		case 0xdb:
1428 			i_name = "vmsave";
1429 			i_size = NONE;
1430 			i_mode = 0;
1431 			break;
1432 		case 0xdc:
1433 			i_name = "stgi";
1434 			i_size = NONE;
1435 			i_mode = 0;
1436 			break;
1437 		case 0xdd:
1438 			i_name = "clgi";
1439 			i_size = NONE;
1440 			i_mode = 0;
1441 			break;
1442 		case 0xde:
1443 			i_name = "skinit";
1444 			i_size = NONE;
1445 			i_mode = 0;
1446 			break;
1447 		case 0xdf:
1448 			i_name = "invlpga";
1449 			i_size = NONE;
1450 			i_mode = 0;
1451 			break;
1452 		case 0xf8:
1453 			i_name = "swapgs";
1454 			i_size = NONE;
1455 			i_mode = 0;
1456 			break;
1457 		case 0xf9:
1458 			i_name = "rdtscp";
1459 			i_size = NONE;
1460 			i_mode = 0;
1461 			break;
1462 		}
1463 	}
1464 	if (ip->i_extra == db_Grp15 && f_mod(rex, regmodrm) == 3) {
1465 		i_name = db_Grp15b[f_reg(rex, regmodrm)];
1466 		i_size = NONE;
1467 		i_mode = 0;
1468 	}
1469 
1470 	/* Handle instructions identified by mandatory prefixes. */
1471 	if (rep == TRUE) {
1472 	    if (inst == 0x90) {
1473 		i_name = "pause";
1474 		i_size = NONE;
1475 		i_mode = 0;
1476 		rep = FALSE;
1477 	    } else if (ip->i_extra == db_Grp9 && f_mod(rex, regmodrm) != 3 &&
1478 		f_reg(rex, regmodrm) == 0x6) {
1479 		i_name = "vmxon";
1480 		rep = FALSE;
1481 	    }
1482 	}
1483 	if (size == WORD) {
1484 	    if (ip->i_extra == db_Grp9 && f_mod(rex, regmodrm) != 3 &&
1485 		f_reg(rex, regmodrm) == 0x6) {
1486 		i_name = "vmclear";
1487 	    }
1488 	}
1489 	if (rex & REX_W) {
1490 	    if (strcmp(i_name, "cwde") == 0)
1491 		i_name = "cdqe";
1492 	    else if (strcmp(i_name, "cmpxchg8b") == 0)
1493 		i_name = "cmpxchg16b";
1494 	}
1495 
1496 	if (rep == TRUE)
1497 	    db_printf("repe ");	/* XXX repe VS rep */
1498 
1499 	if (i_size == SDEP) {
1500 	    if (size == LONG)
1501 		db_printf("%s", i_name);
1502 	    else
1503 		db_printf("%s", (const char *)ip->i_extra);
1504 	} else if (i_size == ADEP) {
1505 	    if (short_addr == FALSE)
1506 		db_printf("%s", i_name);
1507 	    else
1508 		db_printf("%s", (const char *)ip->i_extra);
1509 	}
1510 	else {
1511 	    db_printf("%s", i_name);
1512 	    if ((inst >= 0x50 && inst <= 0x5f) || inst == 0x68 || inst == 0x6a) {
1513 		i_size = NONE;
1514 		db_printf("q");
1515 	    }
1516 	    if (i_size != NONE) {
1517 		if (i_size == BYTE) {
1518 		    db_printf("b");
1519 		    size = BYTE;
1520 		}
1521 		else if (i_size == WORD) {
1522 		    db_printf("w");
1523 		    size = WORD;
1524 		}
1525 		else if (size == WORD)
1526 		    db_printf("w");
1527 		else {
1528 		    if (rex & REX_W)
1529 			db_printf("q");
1530 		    else
1531 			db_printf("l");
1532 		}
1533 	    }
1534 	}
1535 	db_printf("\t");
1536 	for (first = TRUE;
1537 	     i_mode != 0;
1538 	     i_mode >>= 8, first = FALSE)
1539 	{
1540 	    if (!first)
1541 		db_printf(",");
1542 
1543 	    switch (i_mode & 0xFF) {
1544 
1545 		case E:
1546 		    db_print_address(seg, size, rex, &address);
1547 		    break;
1548 
1549 		case Eind:
1550 		    db_printf("*");
1551 		    db_print_address(seg, size, rex, &address);
1552 		    break;
1553 
1554 		case El:
1555 		    db_print_address(seg, (rex & REX_W) ? QUAD : LONG, rex, &address);
1556 		    break;
1557 
1558 		case EL:
1559 		    db_print_address(seg, LONG, 0, &address);
1560 		    break;
1561 
1562 		case Ew:
1563 		    db_print_address(seg, WORD, rex, &address);
1564 		    break;
1565 
1566 		case Eb:
1567 		    db_print_address(seg, BYTE, rex, &address);
1568 		    break;
1569 
1570 		case R:
1571 		    db_printf("%s", db_reg[rex != 0 ? 1 : 0][(size == LONG && (rex & REX_W)) ? QUAD : size][f_reg(rex, regmodrm)]);
1572 		    break;
1573 
1574 		case Rw:
1575 		    db_printf("%s", db_reg[rex != 0 ? 1 : 0][WORD][f_reg(rex, regmodrm)]);
1576 		    break;
1577 
1578 		case Rq:
1579 		    db_printf("%s", db_reg[rex != 0 ? 1 : 0][QUAD][f_reg(rex, regmodrm)]);
1580 		    break;
1581 
1582 		case Ri:
1583 		    db_printf("%s", db_reg[0][QUAD][f_rm(rex, inst)]);
1584 		    break;
1585 
1586 		case Ril:
1587 		    db_printf("%s", db_reg[rex != 0 ? 1 : 0][(rex & REX_R) ? QUAD : LONG][f_rm(rex, inst)]);
1588 		    break;
1589 
1590 	        case Rv:
1591 		    db_printf("%s", db_reg[rex != 0 ? 1 : 0][(size == LONG && (rex & REX_W)) ? QUAD : size][f_rm(rex, regmodrm)]);
1592 		    break;
1593 
1594 		case S:
1595 		    db_printf("%s", db_seg_reg[f_reg(rex, regmodrm)]);
1596 		    break;
1597 
1598 		case Si:
1599 		    db_printf("%s", db_seg_reg[f_reg(rex, inst)]);
1600 		    break;
1601 
1602 		case A:
1603 		    db_printf("%s", db_reg[rex != 0 ? 1 : 0][size][0]);	/* acc */
1604 		    break;
1605 
1606 		case BX:
1607 		    if (seg)
1608 			db_printf("%s:", seg);
1609 		    db_printf("(%s)", short_addr ? "%bx" : "%ebx");
1610 		    break;
1611 
1612 		case CL:
1613 		    db_printf("%%cl");
1614 		    break;
1615 
1616 		case DX:
1617 		    db_printf("%%dx");
1618 		    break;
1619 
1620 		case SI:
1621 		    if (seg)
1622 			db_printf("%s:", seg);
1623 		    db_printf("(%s)", short_addr ? "%si" : "%rsi");
1624 		    break;
1625 
1626 		case DI:
1627 		    db_printf("%%es:(%s)", short_addr ? "%di" : "%rdi");
1628 		    break;
1629 
1630 		case CR:
1631 		    db_printf("%%cr%d", f_reg(rex, regmodrm));
1632 		    break;
1633 
1634 		case DR:
1635 		    db_printf("%%dr%d", f_reg(rex, regmodrm));
1636 		    break;
1637 
1638 		case TR:
1639 		    db_printf("%%tr%d", f_reg(rex, regmodrm));
1640 		    break;
1641 
1642 		case I:
1643 		    len = db_lengths[size];
1644 		    get_value_inc(imm, loc, len, FALSE);
1645 		    db_printf("$%#r", imm);
1646 		    break;
1647 
1648 		case Is:
1649 		    len = db_lengths[(size == LONG && (rex & REX_W)) ? QUAD : size];
1650 		    get_value_inc(imm, loc, len, FALSE);
1651 		    db_printf("$%+#r", imm);
1652 		    break;
1653 
1654 		case Ib:
1655 		    get_value_inc(imm, loc, 1, FALSE);
1656 		    db_printf("$%#r", imm);
1657 		    break;
1658 
1659 		case Iba:
1660 		    get_value_inc(imm, loc, 1, FALSE);
1661 		    if (imm != 0x0a)
1662 			db_printf("$%#r", imm);
1663 		    break;
1664 
1665 		case Ibs:
1666 		    get_value_inc(imm, loc, 1, TRUE);
1667 		    if (size == WORD)
1668 			imm &= 0xFFFF;
1669 		    db_printf("$%+#r", imm);
1670 		    break;
1671 
1672 		case Iw:
1673 		    get_value_inc(imm, loc, 2, FALSE);
1674 		    db_printf("$%#r", imm);
1675 		    break;
1676 
1677 		case Ilq:
1678 		    len = db_lengths[rex & REX_W ? QUAD : LONG];
1679 		    get_value_inc(imm64, loc, len, FALSE);
1680 		    db_printf("$%#lr", imm64);
1681 		    break;
1682 
1683 		case O:
1684 		    len = (short_addr ? 2 : 4);
1685 		    get_value_inc(displ, loc, len, FALSE);
1686 		    if (seg)
1687 			db_printf("%s:%+#r",seg, displ);
1688 		    else
1689 			db_printsym((db_addr_t)displ, DB_STGY_ANY);
1690 		    break;
1691 
1692 		case Db:
1693 		    get_value_inc(displ, loc, 1, TRUE);
1694 		    displ += loc;
1695 		    if (size == WORD)
1696 			displ &= 0xFFFF;
1697 		    db_printsym((db_addr_t)displ, DB_STGY_XTRN);
1698 		    break;
1699 
1700 		case Dl:
1701 		    len = db_lengths[(size == LONG && (rex & REX_W)) ? QUAD : size];
1702 		    get_value_inc(displ, loc, len, FALSE);
1703 		    displ += loc;
1704 		    if (size == WORD)
1705 			displ &= 0xFFFF;
1706 		    db_printsym((db_addr_t)displ, DB_STGY_XTRN);
1707 		    break;
1708 
1709 		case o1:
1710 		    db_printf("$1");
1711 		    break;
1712 
1713 		case o3:
1714 		    db_printf("$3");
1715 		    break;
1716 
1717 		case OS:
1718 		    len = db_lengths[size];
1719 		    get_value_inc(imm, loc, len, FALSE);	/* offset */
1720 		    get_value_inc(imm2, loc, 2, FALSE);	/* segment */
1721 		    db_printf("$%#r,%#r", imm2, imm);
1722 		    break;
1723 	    }
1724 	}
1725 	db_printf("\n");
1726 	return (loc);
1727 }
1728