2 * Mach Operating System
3 * Copyright (c) 1991,1990 Carnegie Mellon University
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.
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.
16 * Carnegie Mellon requests users of this software to return to
18 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
19 * School of Computer Science
20 * Carnegie Mellon University
21 * Pittsburgh PA 15213-3890
23 * any improvements or extensions that they make and grant Carnegie the
24 * rights to redistribute these changes.
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
31 * Instruction disassembler.
33 #include <sys/param.h>
36 #include <ddb/db_access.h>
37 #include <ddb/db_sym.h>
64 #define E 1 /* general effective address */
65 #define Eind 2 /* indirect address (jump, call) */
66 #define Ew 3 /* address, word size */
67 #define Eb 4 /* address, byte size */
68 #define R 5 /* register, in 'reg' field */
69 #define Rw 6 /* word register, in 'reg' field */
70 #define Ri 7 /* register in instruction */
71 #define S 8 /* segment reg, in 'reg' field */
72 #define Si 9 /* segment reg, in instruction */
73 #define A 10 /* accumulator */
74 #define BX 11 /* (bx) */
75 #define CL 12 /* cl, for shifts */
76 #define DX 13 /* dx, for IO */
77 #define SI 14 /* si */
78 #define DI 15 /* di */
79 #define CR 16 /* control register */
80 #define DR 17 /* debug register */
81 #define TR 18 /* test register */
82 #define I 19 /* immediate, unsigned */
83 #define Is 20 /* immediate, signed */
84 #define Ib 21 /* byte immediate, unsigned */
85 #define Ibs 22 /* byte immediate, signed */
86 #define Iw 23 /* word immediate, unsigned */
87 #define Ilq 24 /* long/quad immediate, unsigned */
88 #define O 25 /* direct address */
89 #define Db 26 /* byte displacement from EIP */
90 #define Dl 27 /* long displacement from EIP */
91 #define o1 28 /* constant 1 */
92 #define o3 29 /* constant 3 */
93 #define OS 30 /* immediate offset/segment */
94 #define ST 31 /* FP stack top */
95 #define STI 32 /* FP stack */
96 #define X 33 /* extended FP op */
97 #define XA 34 /* for 'fstcw %ax' */
98 #define El 35 /* address, long/quad size */
99 #define Ril 36 /* long register in instruction */
100 #define Iba 37 /* byte immediate, don't print if 0xa */
101 #define EL 38 /* address, explicitly long size */
104 const char * i_name; /* name */
105 short i_has_modrm; /* has regmodrm byte */
106 short i_size; /* operand size */
107 int i_mode; /* addressing modes */
108 const void * i_extra; /* pointer to extra opcode table */
112 #define op2(x,y) ((x)|((y)<<8))
113 #define op3(x,y,z) ((x)|((y)<<8)|((z)<<16))
116 const char * f_name; /* name for memory instruction */
117 int f_size; /* size for memory instruction */
118 int f_rrmode; /* mode for rr instruction */
119 const void * f_rrname; /* name for rr instruction
120 (or pointer to table) */
123 static const char * const db_Grp6[] = {
134 static const char * const db_Grp7[] = {
145 static const char * const db_Grp8[] = {
156 static const char * const db_Grp9[] = {
167 static const struct inst db_inst_0f0x[] = {
168 /*00*/ { "", TRUE, NONE, op1(Ew), db_Grp6 },
169 /*01*/ { "", TRUE, NONE, op1(Ew), db_Grp7 },
170 /*02*/ { "lar", TRUE, LONG, op2(E,R), 0 },
171 /*03*/ { "lsl", TRUE, LONG, op2(E,R), 0 },
172 /*04*/ { "", FALSE, NONE, 0, 0 },
173 /*05*/ { "", FALSE, NONE, 0, 0 },
174 /*06*/ { "clts", FALSE, NONE, 0, 0 },
175 /*07*/ { "", FALSE, NONE, 0, 0 },
177 /*08*/ { "invd", FALSE, NONE, 0, 0 },
178 /*09*/ { "wbinvd",FALSE, NONE, 0, 0 },
179 /*0a*/ { "", FALSE, NONE, 0, 0 },
180 /*0b*/ { "", FALSE, NONE, 0, 0 },
181 /*0c*/ { "", FALSE, NONE, 0, 0 },
182 /*0d*/ { "", FALSE, NONE, 0, 0 },
183 /*0e*/ { "", FALSE, NONE, 0, 0 },
184 /*0f*/ { "", FALSE, NONE, 0, 0 },
187 static const struct inst db_inst_0f2x[] = {
188 /*20*/ { "mov", TRUE, LONG, op2(CR,El), 0 },
189 /*21*/ { "mov", TRUE, LONG, op2(DR,El), 0 },
190 /*22*/ { "mov", TRUE, LONG, op2(El,CR), 0 },
191 /*23*/ { "mov", TRUE, LONG, op2(El,DR), 0 },
192 /*24*/ { "mov", TRUE, LONG, op2(TR,El), 0 },
193 /*25*/ { "", FALSE, NONE, 0, 0 },
194 /*26*/ { "mov", TRUE, LONG, op2(El,TR), 0 },
195 /*27*/ { "", FALSE, NONE, 0, 0 },
197 /*28*/ { "", FALSE, NONE, 0, 0 },
198 /*29*/ { "", FALSE, NONE, 0, 0 },
199 /*2a*/ { "", FALSE, NONE, 0, 0 },
200 /*2b*/ { "", FALSE, NONE, 0, 0 },
201 /*2c*/ { "", FALSE, NONE, 0, 0 },
202 /*2d*/ { "", FALSE, NONE, 0, 0 },
203 /*2e*/ { "", FALSE, NONE, 0, 0 },
204 /*2f*/ { "", FALSE, NONE, 0, 0 },
207 static const struct inst db_inst_0f3x[] = {
208 /*30*/ { "wrmsr", FALSE, NONE, 0, 0 },
209 /*31*/ { "rdtsc", FALSE, NONE, 0, 0 },
210 /*32*/ { "rdmsr", FALSE, NONE, 0, 0 },
211 /*33*/ { "rdpmc", FALSE, NONE, 0, 0 },
212 /*34*/ { "", FALSE, NONE, 0, 0 },
213 /*35*/ { "", FALSE, NONE, 0, 0 },
214 /*36*/ { "", FALSE, NONE, 0, 0 },
215 /*37*/ { "", FALSE, NONE, 0, 0 },
217 /*38*/ { "", FALSE, NONE, 0, 0 },
218 /*39*/ { "", FALSE, NONE, 0, 0 },
219 /*3a*/ { "", FALSE, NONE, 0, 0 },
220 /*3b*/ { "", FALSE, NONE, 0, 0 },
221 /*3c*/ { "", FALSE, NONE, 0, 0 },
222 /*3d*/ { "", FALSE, NONE, 0, 0 },
223 /*3e*/ { "", FALSE, NONE, 0, 0 },
224 /*3f*/ { "", FALSE, NONE, 0, 0 },
227 static const struct inst db_inst_0f4x[] = {
228 /*40*/ { "cmovo", TRUE, NONE, op2(E, R), 0 },
229 /*41*/ { "cmovno", TRUE, NONE, op2(E, R), 0 },
230 /*42*/ { "cmovb", TRUE, NONE, op2(E, R), 0 },
231 /*43*/ { "cmovnb", TRUE, NONE, op2(E, R), 0 },
232 /*44*/ { "cmovz", TRUE, NONE, op2(E, R), 0 },
233 /*45*/ { "cmovnz", TRUE, NONE, op2(E, R), 0 },
234 /*46*/ { "cmovbe", TRUE, NONE, op2(E, R), 0 },
235 /*47*/ { "cmovnbe",TRUE, NONE, op2(E, R), 0 },
237 /*48*/ { "cmovs", TRUE, NONE, op2(E, R), 0 },
238 /*49*/ { "cmovns", TRUE, NONE, op2(E, R), 0 },
239 /*4a*/ { "cmovp", TRUE, NONE, op2(E, R), 0 },
240 /*4b*/ { "cmovnp", TRUE, NONE, op2(E, R), 0 },
241 /*4c*/ { "cmovl", TRUE, NONE, op2(E, R), 0 },
242 /*4d*/ { "cmovnl", TRUE, NONE, op2(E, R), 0 },
243 /*4e*/ { "cmovle", TRUE, NONE, op2(E, R), 0 },
244 /*4f*/ { "cmovnle",TRUE, NONE, op2(E, R), 0 },
247 static const struct inst db_inst_0f8x[] = {
248 /*80*/ { "jo", FALSE, NONE, op1(Dl), 0 },
249 /*81*/ { "jno", FALSE, NONE, op1(Dl), 0 },
250 /*82*/ { "jb", FALSE, NONE, op1(Dl), 0 },
251 /*83*/ { "jnb", FALSE, NONE, op1(Dl), 0 },
252 /*84*/ { "jz", FALSE, NONE, op1(Dl), 0 },
253 /*85*/ { "jnz", FALSE, NONE, op1(Dl), 0 },
254 /*86*/ { "jbe", FALSE, NONE, op1(Dl), 0 },
255 /*87*/ { "jnbe", FALSE, NONE, op1(Dl), 0 },
257 /*88*/ { "js", FALSE, NONE, op1(Dl), 0 },
258 /*89*/ { "jns", FALSE, NONE, op1(Dl), 0 },
259 /*8a*/ { "jp", FALSE, NONE, op1(Dl), 0 },
260 /*8b*/ { "jnp", FALSE, NONE, op1(Dl), 0 },
261 /*8c*/ { "jl", FALSE, NONE, op1(Dl), 0 },
262 /*8d*/ { "jnl", FALSE, NONE, op1(Dl), 0 },
263 /*8e*/ { "jle", FALSE, NONE, op1(Dl), 0 },
264 /*8f*/ { "jnle", FALSE, NONE, op1(Dl), 0 },
267 static const struct inst db_inst_0f9x[] = {
268 /*90*/ { "seto", TRUE, NONE, op1(Eb), 0 },
269 /*91*/ { "setno", TRUE, NONE, op1(Eb), 0 },
270 /*92*/ { "setb", TRUE, NONE, op1(Eb), 0 },
271 /*93*/ { "setnb", TRUE, NONE, op1(Eb), 0 },
272 /*94*/ { "setz", TRUE, NONE, op1(Eb), 0 },
273 /*95*/ { "setnz", TRUE, NONE, op1(Eb), 0 },
274 /*96*/ { "setbe", TRUE, NONE, op1(Eb), 0 },
275 /*97*/ { "setnbe",TRUE, NONE, op1(Eb), 0 },
277 /*98*/ { "sets", TRUE, NONE, op1(Eb), 0 },
278 /*99*/ { "setns", TRUE, NONE, op1(Eb), 0 },
279 /*9a*/ { "setp", TRUE, NONE, op1(Eb), 0 },
280 /*9b*/ { "setnp", TRUE, NONE, op1(Eb), 0 },
281 /*9c*/ { "setl", TRUE, NONE, op1(Eb), 0 },
282 /*9d*/ { "setnl", TRUE, NONE, op1(Eb), 0 },
283 /*9e*/ { "setle", TRUE, NONE, op1(Eb), 0 },
284 /*9f*/ { "setnle",TRUE, NONE, op1(Eb), 0 },
287 static const struct inst db_inst_0fax[] = {
288 /*a0*/ { "push", FALSE, NONE, op1(Si), 0 },
289 /*a1*/ { "pop", FALSE, NONE, op1(Si), 0 },
290 /*a2*/ { "cpuid", FALSE, NONE, 0, 0 },
291 /*a3*/ { "bt", TRUE, LONG, op2(R,E), 0 },
292 /*a4*/ { "shld", TRUE, LONG, op3(Ib,R,E), 0 },
293 /*a5*/ { "shld", TRUE, LONG, op3(CL,R,E), 0 },
294 /*a6*/ { "", FALSE, NONE, 0, 0 },
295 /*a7*/ { "", FALSE, NONE, 0, 0 },
297 /*a8*/ { "push", FALSE, NONE, op1(Si), 0 },
298 /*a9*/ { "pop", FALSE, NONE, op1(Si), 0 },
299 /*aa*/ { "rsm", FALSE, NONE, 0, 0 },
300 /*ab*/ { "bts", TRUE, LONG, op2(R,E), 0 },
301 /*ac*/ { "shrd", TRUE, LONG, op3(Ib,R,E), 0 },
302 /*ad*/ { "shrd", TRUE, LONG, op3(CL,R,E), 0 },
303 /*a6*/ { "", FALSE, NONE, 0, 0 },
304 /*a7*/ { "imul", TRUE, LONG, op2(E,R), 0 },
307 static const struct inst db_inst_0fbx[] = {
308 /*b0*/ { "cmpxchg",TRUE, BYTE, op2(R, E), 0 },
309 /*b0*/ { "cmpxchg",TRUE, LONG, op2(R, E), 0 },
310 /*b2*/ { "lss", TRUE, LONG, op2(E, R), 0 },
311 /*b3*/ { "btr", TRUE, LONG, op2(R, E), 0 },
312 /*b4*/ { "lfs", TRUE, LONG, op2(E, R), 0 },
313 /*b5*/ { "lgs", TRUE, LONG, op2(E, R), 0 },
314 /*b6*/ { "movzb", TRUE, LONG, op2(Eb, R), 0 },
315 /*b7*/ { "movzw", TRUE, LONG, op2(Ew, R), 0 },
317 /*b8*/ { "", FALSE, NONE, 0, 0 },
318 /*b9*/ { "", FALSE, NONE, 0, 0 },
319 /*ba*/ { "", TRUE, LONG, op2(Ib, E), db_Grp8 },
320 /*bb*/ { "btc", TRUE, LONG, op2(R, E), 0 },
321 /*bc*/ { "bsf", TRUE, LONG, op2(E, R), 0 },
322 /*bd*/ { "bsr", TRUE, LONG, op2(E, R), 0 },
323 /*be*/ { "movsb", TRUE, LONG, op2(Eb, R), 0 },
324 /*bf*/ { "movsw", TRUE, LONG, op2(Ew, R), 0 },
327 static const struct inst db_inst_0fcx[] = {
328 /*c0*/ { "xadd", TRUE, BYTE, op2(R, E), 0 },
329 /*c1*/ { "xadd", TRUE, LONG, op2(R, E), 0 },
330 /*c2*/ { "", FALSE, NONE, 0, 0 },
331 /*c3*/ { "", FALSE, NONE, 0, 0 },
332 /*c4*/ { "", FALSE, NONE, 0, 0 },
333 /*c5*/ { "", FALSE, NONE, 0, 0 },
334 /*c6*/ { "", FALSE, NONE, 0, 0 },
335 /*c7*/ { "", TRUE, NONE, op1(E), db_Grp9 },
336 /*c8*/ { "bswap", FALSE, LONG, op1(Ril), 0 },
337 /*c9*/ { "bswap", FALSE, LONG, op1(Ril), 0 },
338 /*ca*/ { "bswap", FALSE, LONG, op1(Ril), 0 },
339 /*cb*/ { "bswap", FALSE, LONG, op1(Ril), 0 },
340 /*cc*/ { "bswap", FALSE, LONG, op1(Ril), 0 },
341 /*cd*/ { "bswap", FALSE, LONG, op1(Ril), 0 },
342 /*ce*/ { "bswap", FALSE, LONG, op1(Ril), 0 },
343 /*cf*/ { "bswap", FALSE, LONG, op1(Ril), 0 },
346 static const struct inst * const db_inst_0f[] = {
365 static const char * const db_Esc92[] = {
366 "fnop", "", "", "", "", "", "", ""
368 static const char * const db_Esc94[] = {
369 "fchs", "fabs", "", "", "ftst", "fxam", "", ""
371 static const char * const db_Esc95[] = {
372 "fld1", "fldl2t","fldl2e","fldpi","fldlg2","fldln2","fldz",""
374 static const char * const db_Esc96[] = {
375 "f2xm1","fyl2x","fptan","fpatan","fxtract","fprem1","fdecstp",
378 static const char * const db_Esc97[] = {
379 "fprem","fyl2xp1","fsqrt","fsincos","frndint","fscale","fsin","fcos"
382 static const char * const db_Esca5[] = {
383 "", "fucompp","", "", "", "", "", ""
386 static const char * const db_Escb4[] = {
387 "fneni","fndisi", "fnclex","fninit","fsetpm", "", "", ""
390 static const char * const db_Esce3[] = {
391 "", "fcompp","", "", "", "", "", ""
394 static const char * const db_Escf4[] = {
395 "fnstsw","", "", "", "", "", "", ""
398 static const struct finst db_Esc8[] = {
399 /*0*/ { "fadd", SNGL, op2(STI,ST), 0 },
400 /*1*/ { "fmul", SNGL, op2(STI,ST), 0 },
401 /*2*/ { "fcom", SNGL, op2(STI,ST), 0 },
402 /*3*/ { "fcomp", SNGL, op2(STI,ST), 0 },
403 /*4*/ { "fsub", SNGL, op2(STI,ST), 0 },
404 /*5*/ { "fsubr", SNGL, op2(STI,ST), 0 },
405 /*6*/ { "fdiv", SNGL, op2(STI,ST), 0 },
406 /*7*/ { "fdivr", SNGL, op2(STI,ST), 0 },
409 static const struct finst db_Esc9[] = {
410 /*0*/ { "fld", SNGL, op1(STI), 0 },
411 /*1*/ { "", NONE, op1(STI), "fxch" },
412 /*2*/ { "fst", SNGL, op1(X), db_Esc92 },
413 /*3*/ { "fstp", SNGL, 0, 0 },
414 /*4*/ { "fldenv", NONE, op1(X), db_Esc94 },
415 /*5*/ { "fldcw", NONE, op1(X), db_Esc95 },
416 /*6*/ { "fnstenv",NONE, op1(X), db_Esc96 },
417 /*7*/ { "fnstcw", NONE, op1(X), db_Esc97 },
420 static const struct finst db_Esca[] = {
421 /*0*/ { "fiadd", LONG, 0, 0 },
422 /*1*/ { "fimul", LONG, 0, 0 },
423 /*2*/ { "ficom", LONG, 0, 0 },
424 /*3*/ { "ficomp", LONG, 0, 0 },
425 /*4*/ { "fisub", LONG, 0, 0 },
426 /*5*/ { "fisubr", LONG, op1(X), db_Esca5 },
427 /*6*/ { "fidiv", LONG, 0, 0 },
428 /*7*/ { "fidivr", LONG, 0, 0 }
431 static const struct finst db_Escb[] = {
432 /*0*/ { "fild", LONG, 0, 0 },
433 /*1*/ { "", NONE, 0, 0 },
434 /*2*/ { "fist", LONG, 0, 0 },
435 /*3*/ { "fistp", LONG, 0, 0 },
436 /*4*/ { "", WORD, op1(X), db_Escb4 },
437 /*5*/ { "fld", EXTR, 0, 0 },
438 /*6*/ { "", WORD, 0, 0 },
439 /*7*/ { "fstp", EXTR, 0, 0 },
442 static const struct finst db_Escc[] = {
443 /*0*/ { "fadd", DBLR, op2(ST,STI), 0 },
444 /*1*/ { "fmul", DBLR, op2(ST,STI), 0 },
445 /*2*/ { "fcom", DBLR, 0, 0 },
446 /*3*/ { "fcomp", DBLR, 0, 0 },
447 /*4*/ { "fsub", DBLR, op2(ST,STI), "fsubr" },
448 /*5*/ { "fsubr", DBLR, op2(ST,STI), "fsub" },
449 /*6*/ { "fdiv", DBLR, op2(ST,STI), "fdivr" },
450 /*7*/ { "fdivr", DBLR, op2(ST,STI), "fdiv" },
453 static const struct finst db_Escd[] = {
454 /*0*/ { "fld", DBLR, op1(STI), "ffree" },
455 /*1*/ { "", NONE, 0, 0 },
456 /*2*/ { "fst", DBLR, op1(STI), 0 },
457 /*3*/ { "fstp", DBLR, op1(STI), 0 },
458 /*4*/ { "frstor", NONE, op1(STI), "fucom" },
459 /*5*/ { "", NONE, op1(STI), "fucomp" },
460 /*6*/ { "fnsave", NONE, 0, 0 },
461 /*7*/ { "fnstsw", NONE, 0, 0 },
464 static const struct finst db_Esce[] = {
465 /*0*/ { "fiadd", WORD, op2(ST,STI), "faddp" },
466 /*1*/ { "fimul", WORD, op2(ST,STI), "fmulp" },
467 /*2*/ { "ficom", WORD, 0, 0 },
468 /*3*/ { "ficomp", WORD, op1(X), db_Esce3 },
469 /*4*/ { "fisub", WORD, op2(ST,STI), "fsubrp" },
470 /*5*/ { "fisubr", WORD, op2(ST,STI), "fsubp" },
471 /*6*/ { "fidiv", WORD, op2(ST,STI), "fdivrp" },
472 /*7*/ { "fidivr", WORD, op2(ST,STI), "fdivp" },
475 static const struct finst db_Escf[] = {
476 /*0*/ { "fild", WORD, 0, 0 },
477 /*1*/ { "", NONE, 0, 0 },
478 /*2*/ { "fist", WORD, 0, 0 },
479 /*3*/ { "fistp", WORD, 0, 0 },
480 /*4*/ { "fbld", NONE, op1(XA), db_Escf4 },
481 /*5*/ { "fild", QUAD, 0, 0 },
482 /*6*/ { "fbstp", NONE, 0, 0 },
483 /*7*/ { "fistp", QUAD, 0, 0 },
486 static const struct finst * const db_Esc_inst[] = {
487 db_Esc8, db_Esc9, db_Esca, db_Escb,
488 db_Escc, db_Escd, db_Esce, db_Escf
491 static const char * const db_Grp1[] = {
502 static const char * const db_Grp2[] = {
513 static const struct inst db_Grp3[] = {
514 { "test", TRUE, NONE, op2(I,E), 0 },
515 { "test", TRUE, NONE, op2(I,E), 0 },
516 { "not", TRUE, NONE, op1(E), 0 },
517 { "neg", TRUE, NONE, op1(E), 0 },
518 { "mul", TRUE, NONE, op2(E,A), 0 },
519 { "imul", TRUE, NONE, op2(E,A), 0 },
520 { "div", TRUE, NONE, op2(E,A), 0 },
521 { "idiv", TRUE, NONE, op2(E,A), 0 },
524 static const struct inst db_Grp4[] = {
525 { "inc", TRUE, BYTE, op1(E), 0 },
526 { "dec", TRUE, BYTE, op1(E), 0 },
527 { "", TRUE, NONE, 0, 0 },
528 { "", TRUE, NONE, 0, 0 },
529 { "", TRUE, NONE, 0, 0 },
530 { "", TRUE, NONE, 0, 0 },
531 { "", TRUE, NONE, 0, 0 },
532 { "", TRUE, NONE, 0, 0 }
535 static const struct inst db_Grp5[] = {
536 { "inc", TRUE, LONG, op1(E), 0 },
537 { "dec", TRUE, LONG, op1(E), 0 },
538 { "call", TRUE, LONG, op1(Eind),0 },
539 { "lcall", TRUE, LONG, op1(Eind),0 },
540 { "jmp", TRUE, LONG, op1(Eind),0 },
541 { "ljmp", TRUE, LONG, op1(Eind),0 },
542 { "push", TRUE, LONG, op1(E), 0 },
543 { "", TRUE, NONE, 0, 0 }
546 static const struct inst db_inst_table[256] = {
547 /*00*/ { "add", TRUE, BYTE, op2(R, E), 0 },
548 /*01*/ { "add", TRUE, LONG, op2(R, E), 0 },
549 /*02*/ { "add", TRUE, BYTE, op2(E, R), 0 },
550 /*03*/ { "add", TRUE, LONG, op2(E, R), 0 },
551 /*04*/ { "add", FALSE, BYTE, op2(I, A), 0 },
552 /*05*/ { "add", FALSE, LONG, op2(Is, A), 0 },
553 /*06*/ { "push", FALSE, NONE, op1(Si), 0 },
554 /*07*/ { "pop", FALSE, NONE, op1(Si), 0 },
556 /*08*/ { "or", TRUE, BYTE, op2(R, E), 0 },
557 /*09*/ { "or", TRUE, LONG, op2(R, E), 0 },
558 /*0a*/ { "or", TRUE, BYTE, op2(E, R), 0 },
559 /*0b*/ { "or", TRUE, LONG, op2(E, R), 0 },
560 /*0c*/ { "or", FALSE, BYTE, op2(I, A), 0 },
561 /*0d*/ { "or", FALSE, LONG, op2(I, A), 0 },
562 /*0e*/ { "push", FALSE, NONE, op1(Si), 0 },
563 /*0f*/ { "", FALSE, NONE, 0, 0 },
565 /*10*/ { "adc", TRUE, BYTE, op2(R, E), 0 },
566 /*11*/ { "adc", TRUE, LONG, op2(R, E), 0 },
567 /*12*/ { "adc", TRUE, BYTE, op2(E, R), 0 },
568 /*13*/ { "adc", TRUE, LONG, op2(E, R), 0 },
569 /*14*/ { "adc", FALSE, BYTE, op2(I, A), 0 },
570 /*15*/ { "adc", FALSE, LONG, op2(Is, A), 0 },
571 /*16*/ { "push", FALSE, NONE, op1(Si), 0 },
572 /*17*/ { "pop", FALSE, NONE, op1(Si), 0 },
574 /*18*/ { "sbb", TRUE, BYTE, op2(R, E), 0 },
575 /*19*/ { "sbb", TRUE, LONG, op2(R, E), 0 },
576 /*1a*/ { "sbb", TRUE, BYTE, op2(E, R), 0 },
577 /*1b*/ { "sbb", TRUE, LONG, op2(E, R), 0 },
578 /*1c*/ { "sbb", FALSE, BYTE, op2(I, A), 0 },
579 /*1d*/ { "sbb", FALSE, LONG, op2(Is, A), 0 },
580 /*1e*/ { "push", FALSE, NONE, op1(Si), 0 },
581 /*1f*/ { "pop", FALSE, NONE, op1(Si), 0 },
583 /*20*/ { "and", TRUE, BYTE, op2(R, E), 0 },
584 /*21*/ { "and", TRUE, LONG, op2(R, E), 0 },
585 /*22*/ { "and", TRUE, BYTE, op2(E, R), 0 },
586 /*23*/ { "and", TRUE, LONG, op2(E, R), 0 },
587 /*24*/ { "and", FALSE, BYTE, op2(I, A), 0 },
588 /*25*/ { "and", FALSE, LONG, op2(I, A), 0 },
589 /*26*/ { "", FALSE, NONE, 0, 0 },
590 /*27*/ { "daa", FALSE, NONE, 0, 0 },
592 /*28*/ { "sub", TRUE, BYTE, op2(R, E), 0 },
593 /*29*/ { "sub", TRUE, LONG, op2(R, E), 0 },
594 /*2a*/ { "sub", TRUE, BYTE, op2(E, R), 0 },
595 /*2b*/ { "sub", TRUE, LONG, op2(E, R), 0 },
596 /*2c*/ { "sub", FALSE, BYTE, op2(I, A), 0 },
597 /*2d*/ { "sub", FALSE, LONG, op2(Is, A), 0 },
598 /*2e*/ { "", FALSE, NONE, 0, 0 },
599 /*2f*/ { "das", FALSE, NONE, 0, 0 },
601 /*30*/ { "xor", TRUE, BYTE, op2(R, E), 0 },
602 /*31*/ { "xor", TRUE, LONG, op2(R, E), 0 },
603 /*32*/ { "xor", TRUE, BYTE, op2(E, R), 0 },
604 /*33*/ { "xor", TRUE, LONG, op2(E, R), 0 },
605 /*34*/ { "xor", FALSE, BYTE, op2(I, A), 0 },
606 /*35*/ { "xor", FALSE, LONG, op2(I, A), 0 },
607 /*36*/ { "", FALSE, NONE, 0, 0 },
608 /*37*/ { "aaa", FALSE, NONE, 0, 0 },
610 /*38*/ { "cmp", TRUE, BYTE, op2(R, E), 0 },
611 /*39*/ { "cmp", TRUE, LONG, op2(R, E), 0 },
612 /*3a*/ { "cmp", TRUE, BYTE, op2(E, R), 0 },
613 /*3b*/ { "cmp", TRUE, LONG, op2(E, R), 0 },
614 /*3c*/ { "cmp", FALSE, BYTE, op2(I, A), 0 },
615 /*3d*/ { "cmp", FALSE, LONG, op2(Is, A), 0 },
616 /*3e*/ { "", FALSE, NONE, 0, 0 },
617 /*3f*/ { "aas", FALSE, NONE, 0, 0 },
619 /*40*/ { "rex", FALSE, NONE, 0, 0 },
620 /*41*/ { "rex.b", FALSE, NONE, 0, 0 },
621 /*42*/ { "rex.x", FALSE, NONE, 0, 0 },
622 /*43*/ { "rex.xb", FALSE, NONE, 0, 0 },
623 /*44*/ { "rex.r", FALSE, NONE, 0, 0 },
624 /*45*/ { "rex.rb", FALSE, NONE, 0, 0 },
625 /*46*/ { "rex.rx", FALSE, NONE, 0, 0 },
626 /*47*/ { "rex.rxb", FALSE, NONE, 0, 0 },
628 /*48*/ { "rex.w", FALSE, NONE, 0, 0 },
629 /*49*/ { "rex.wb", FALSE, NONE, 0, 0 },
630 /*4a*/ { "rex.wx", FALSE, NONE, 0, 0 },
631 /*4b*/ { "rex.wxb", FALSE, NONE, 0, 0 },
632 /*4c*/ { "rex.wr", FALSE, NONE, 0, 0 },
633 /*4d*/ { "rex.wrb", FALSE, NONE, 0, 0 },
634 /*4e*/ { "rex.wrx", FALSE, NONE, 0, 0 },
635 /*4f*/ { "rex.wrxb", FALSE, NONE, 0, 0 },
637 /*50*/ { "push", FALSE, LONG, op1(Ri), 0 },
638 /*51*/ { "push", FALSE, LONG, op1(Ri), 0 },
639 /*52*/ { "push", FALSE, LONG, op1(Ri), 0 },
640 /*53*/ { "push", FALSE, LONG, op1(Ri), 0 },
641 /*54*/ { "push", FALSE, LONG, op1(Ri), 0 },
642 /*55*/ { "push", FALSE, LONG, op1(Ri), 0 },
643 /*56*/ { "push", FALSE, LONG, op1(Ri), 0 },
644 /*57*/ { "push", FALSE, LONG, op1(Ri), 0 },
646 /*58*/ { "pop", FALSE, LONG, op1(Ri), 0 },
647 /*59*/ { "pop", FALSE, LONG, op1(Ri), 0 },
648 /*5a*/ { "pop", FALSE, LONG, op1(Ri), 0 },
649 /*5b*/ { "pop", FALSE, LONG, op1(Ri), 0 },
650 /*5c*/ { "pop", FALSE, LONG, op1(Ri), 0 },
651 /*5d*/ { "pop", FALSE, LONG, op1(Ri), 0 },
652 /*5e*/ { "pop", FALSE, LONG, op1(Ri), 0 },
653 /*5f*/ { "pop", FALSE, LONG, op1(Ri), 0 },
655 /*60*/ { "pusha", FALSE, LONG, 0, 0 },
656 /*61*/ { "popa", FALSE, LONG, 0, 0 },
657 /*62*/ { "bound", TRUE, LONG, op2(E, R), 0 },
658 /*63*/ { "movslq", TRUE, NONE, op2(EL,R), 0 },
660 /*64*/ { "", FALSE, NONE, 0, 0 },
661 /*65*/ { "", FALSE, NONE, 0, 0 },
662 /*66*/ { "", FALSE, NONE, 0, 0 },
663 /*67*/ { "", FALSE, NONE, 0, 0 },
665 /*68*/ { "push", FALSE, LONG, op1(I), 0 },
666 /*69*/ { "imul", TRUE, LONG, op3(I,E,R), 0 },
667 /*6a*/ { "push", FALSE, LONG, op1(Ibs), 0 },
668 /*6b*/ { "imul", TRUE, LONG, op3(Ibs,E,R),0 },
669 /*6c*/ { "ins", FALSE, BYTE, op2(DX, DI), 0 },
670 /*6d*/ { "ins", FALSE, LONG, op2(DX, DI), 0 },
671 /*6e*/ { "outs", FALSE, BYTE, op2(SI, DX), 0 },
672 /*6f*/ { "outs", FALSE, LONG, op2(SI, DX), 0 },
674 /*70*/ { "jo", FALSE, NONE, op1(Db), 0 },
675 /*71*/ { "jno", FALSE, NONE, op1(Db), 0 },
676 /*72*/ { "jb", FALSE, NONE, op1(Db), 0 },
677 /*73*/ { "jnb", FALSE, NONE, op1(Db), 0 },
678 /*74*/ { "jz", FALSE, NONE, op1(Db), 0 },
679 /*75*/ { "jnz", FALSE, NONE, op1(Db), 0 },
680 /*76*/ { "jbe", FALSE, NONE, op1(Db), 0 },
681 /*77*/ { "jnbe", FALSE, NONE, op1(Db), 0 },
683 /*78*/ { "js", FALSE, NONE, op1(Db), 0 },
684 /*79*/ { "jns", FALSE, NONE, op1(Db), 0 },
685 /*7a*/ { "jp", FALSE, NONE, op1(Db), 0 },
686 /*7b*/ { "jnp", FALSE, NONE, op1(Db), 0 },
687 /*7c*/ { "jl", FALSE, NONE, op1(Db), 0 },
688 /*7d*/ { "jnl", FALSE, NONE, op1(Db), 0 },
689 /*7e*/ { "jle", FALSE, NONE, op1(Db), 0 },
690 /*7f*/ { "jnle", FALSE, NONE, op1(Db), 0 },
692 /*80*/ { "", TRUE, BYTE, op2(I, E), db_Grp1 },
693 /*81*/ { "", TRUE, LONG, op2(I, E), db_Grp1 },
694 /*82*/ { "", TRUE, BYTE, op2(I, E), db_Grp1 },
695 /*83*/ { "", TRUE, LONG, op2(Ibs,E), db_Grp1 },
696 /*84*/ { "test", TRUE, BYTE, op2(R, E), 0 },
697 /*85*/ { "test", TRUE, LONG, op2(R, E), 0 },
698 /*86*/ { "xchg", TRUE, BYTE, op2(R, E), 0 },
699 /*87*/ { "xchg", TRUE, LONG, op2(R, E), 0 },
701 /*88*/ { "mov", TRUE, BYTE, op2(R, E), 0 },
702 /*89*/ { "mov", TRUE, LONG, op2(R, E), 0 },
703 /*8a*/ { "mov", TRUE, BYTE, op2(E, R), 0 },
704 /*8b*/ { "mov", TRUE, LONG, op2(E, R), 0 },
705 /*8c*/ { "mov", TRUE, NONE, op2(S, Ew), 0 },
706 /*8d*/ { "lea", TRUE, LONG, op2(E, R), 0 },
707 /*8e*/ { "mov", TRUE, NONE, op2(Ew, S), 0 },
708 /*8f*/ { "pop", TRUE, LONG, op1(E), 0 },
710 /*90*/ { "nop", FALSE, NONE, 0, 0 },
711 /*91*/ { "xchg", FALSE, LONG, op2(A, Ri), 0 },
712 /*92*/ { "xchg", FALSE, LONG, op2(A, Ri), 0 },
713 /*93*/ { "xchg", FALSE, LONG, op2(A, Ri), 0 },
714 /*94*/ { "xchg", FALSE, LONG, op2(A, Ri), 0 },
715 /*95*/ { "xchg", FALSE, LONG, op2(A, Ri), 0 },
716 /*96*/ { "xchg", FALSE, LONG, op2(A, Ri), 0 },
717 /*97*/ { "xchg", FALSE, LONG, op2(A, Ri), 0 },
719 /*98*/ { "cbw", FALSE, SDEP, 0, "cwde" }, /* cbw/cwde */
720 /*99*/ { "cwd", FALSE, SDEP, 0, "cdq" }, /* cwd/cdq */
721 /*9a*/ { "lcall", FALSE, NONE, op1(OS), 0 },
722 /*9b*/ { "wait", FALSE, NONE, 0, 0 },
723 /*9c*/ { "pushf", FALSE, LONG, 0, 0 },
724 /*9d*/ { "popf", FALSE, LONG, 0, 0 },
725 /*9e*/ { "sahf", FALSE, NONE, 0, 0 },
726 /*9f*/ { "lahf", FALSE, NONE, 0, 0 },
728 /*a0*/ { "mov", FALSE, BYTE, op2(O, A), 0 },
729 /*a1*/ { "mov", FALSE, LONG, op2(O, A), 0 },
730 /*a2*/ { "mov", FALSE, BYTE, op2(A, O), 0 },
731 /*a3*/ { "mov", FALSE, LONG, op2(A, O), 0 },
732 /*a4*/ { "movs", FALSE, BYTE, op2(SI,DI), 0 },
733 /*a5*/ { "movs", FALSE, LONG, op2(SI,DI), 0 },
734 /*a6*/ { "cmps", FALSE, BYTE, op2(SI,DI), 0 },
735 /*a7*/ { "cmps", FALSE, LONG, op2(SI,DI), 0 },
737 /*a8*/ { "test", FALSE, BYTE, op2(I, A), 0 },
738 /*a9*/ { "test", FALSE, LONG, op2(I, A), 0 },
739 /*aa*/ { "stos", FALSE, BYTE, op1(DI), 0 },
740 /*ab*/ { "stos", FALSE, LONG, op1(DI), 0 },
741 /*ac*/ { "lods", FALSE, BYTE, op1(SI), 0 },
742 /*ad*/ { "lods", FALSE, LONG, op1(SI), 0 },
743 /*ae*/ { "scas", FALSE, BYTE, op1(SI), 0 },
744 /*af*/ { "scas", FALSE, LONG, op1(SI), 0 },
746 /*b0*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 },
747 /*b1*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 },
748 /*b2*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 },
749 /*b3*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 },
750 /*b4*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 },
751 /*b5*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 },
752 /*b6*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 },
753 /*b7*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 },
755 /*b8*/ { "mov", FALSE, LONG, op2(Ilq, Ri), 0 },
756 /*b9*/ { "mov", FALSE, LONG, op2(Ilq, Ri), 0 },
757 /*ba*/ { "mov", FALSE, LONG, op2(Ilq, Ri), 0 },
758 /*bb*/ { "mov", FALSE, LONG, op2(Ilq, Ri), 0 },
759 /*bc*/ { "mov", FALSE, LONG, op2(Ilq, Ri), 0 },
760 /*bd*/ { "mov", FALSE, LONG, op2(Ilq, Ri), 0 },
761 /*be*/ { "mov", FALSE, LONG, op2(Ilq, Ri), 0 },
762 /*bf*/ { "mov", FALSE, LONG, op2(Ilq, Ri), 0 },
764 /*c0*/ { "", TRUE, BYTE, op2(Ib, E), db_Grp2 },
765 /*c1*/ { "", TRUE, LONG, op2(Ib, E), db_Grp2 },
766 /*c2*/ { "ret", FALSE, NONE, op1(Iw), 0 },
767 /*c3*/ { "ret", FALSE, NONE, 0, 0 },
768 /*c4*/ { "les", TRUE, LONG, op2(E, R), 0 },
769 /*c5*/ { "lds", TRUE, LONG, op2(E, R), 0 },
770 /*c6*/ { "mov", TRUE, BYTE, op2(I, E), 0 },
771 /*c7*/ { "mov", TRUE, LONG, op2(I, E), 0 },
773 /*c8*/ { "enter", FALSE, NONE, op2(Iw, Ib), 0 },
774 /*c9*/ { "leave", FALSE, NONE, 0, 0 },
775 /*ca*/ { "lret", FALSE, NONE, op1(Iw), 0 },
776 /*cb*/ { "lret", FALSE, NONE, 0, 0 },
777 /*cc*/ { "int", FALSE, NONE, op1(o3), 0 },
778 /*cd*/ { "int", FALSE, NONE, op1(Ib), 0 },
779 /*ce*/ { "into", FALSE, NONE, 0, 0 },
780 /*cf*/ { "iret", FALSE, NONE, 0, 0 },
782 /*d0*/ { "", TRUE, BYTE, op2(o1, E), db_Grp2 },
783 /*d1*/ { "", TRUE, LONG, op2(o1, E), db_Grp2 },
784 /*d2*/ { "", TRUE, BYTE, op2(CL, E), db_Grp2 },
785 /*d3*/ { "", TRUE, LONG, op2(CL, E), db_Grp2 },
786 /*d4*/ { "aam", FALSE, NONE, op1(Iba), 0 },
787 /*d5*/ { "aad", FALSE, NONE, op1(Iba), 0 },
788 /*d6*/ { ".byte\t0xd6", FALSE, NONE, 0, 0 },
789 /*d7*/ { "xlat", FALSE, BYTE, op1(BX), 0 },
791 /*d8*/ { "", TRUE, NONE, 0, db_Esc8 },
792 /*d9*/ { "", TRUE, NONE, 0, db_Esc9 },
793 /*da*/ { "", TRUE, NONE, 0, db_Esca },
794 /*db*/ { "", TRUE, NONE, 0, db_Escb },
795 /*dc*/ { "", TRUE, NONE, 0, db_Escc },
796 /*dd*/ { "", TRUE, NONE, 0, db_Escd },
797 /*de*/ { "", TRUE, NONE, 0, db_Esce },
798 /*df*/ { "", TRUE, NONE, 0, db_Escf },
800 /*e0*/ { "loopne",FALSE, NONE, op1(Db), 0 },
801 /*e1*/ { "loope", FALSE, NONE, op1(Db), 0 },
802 /*e2*/ { "loop", FALSE, NONE, op1(Db), 0 },
803 /*e3*/ { "jcxz", FALSE, SDEP, op1(Db), "jecxz" },
804 /*e4*/ { "in", FALSE, BYTE, op2(Ib, A), 0 },
805 /*e5*/ { "in", FALSE, LONG, op2(Ib, A) , 0 },
806 /*e6*/ { "out", FALSE, BYTE, op2(A, Ib), 0 },
807 /*e7*/ { "out", FALSE, LONG, op2(A, Ib) , 0 },
809 /*e8*/ { "call", FALSE, NONE, op1(Dl), 0 },
810 /*e9*/ { "jmp", FALSE, NONE, op1(Dl), 0 },
811 /*ea*/ { "ljmp", FALSE, NONE, op1(OS), 0 },
812 /*eb*/ { "jmp", FALSE, NONE, op1(Db), 0 },
813 /*ec*/ { "in", FALSE, BYTE, op2(DX, A), 0 },
814 /*ed*/ { "in", FALSE, LONG, op2(DX, A) , 0 },
815 /*ee*/ { "out", FALSE, BYTE, op2(A, DX), 0 },
816 /*ef*/ { "out", FALSE, LONG, op2(A, DX) , 0 },
818 /*f0*/ { "", FALSE, NONE, 0, 0 },
819 /*f1*/ { ".byte\t0xf1", FALSE, NONE, 0, 0 },
820 /*f2*/ { "", FALSE, NONE, 0, 0 },
821 /*f3*/ { "", FALSE, NONE, 0, 0 },
822 /*f4*/ { "hlt", FALSE, NONE, 0, 0 },
823 /*f5*/ { "cmc", FALSE, NONE, 0, 0 },
824 /*f6*/ { "", TRUE, BYTE, 0, db_Grp3 },
825 /*f7*/ { "", TRUE, LONG, 0, db_Grp3 },
827 /*f8*/ { "clc", FALSE, NONE, 0, 0 },
828 /*f9*/ { "stc", FALSE, NONE, 0, 0 },
829 /*fa*/ { "cli", FALSE, NONE, 0, 0 },
830 /*fb*/ { "sti", FALSE, NONE, 0, 0 },
831 /*fc*/ { "cld", FALSE, NONE, 0, 0 },
832 /*fd*/ { "std", FALSE, NONE, 0, 0 },
833 /*fe*/ { "", TRUE, NONE, 0, db_Grp4 },
834 /*ff*/ { "", TRUE, NONE, 0, db_Grp5 },
837 static const struct inst db_bad_inst =
838 { "???", FALSE, NONE, 0, 0 }
841 #define f_mod(rex, byte) ((byte)>>6)
842 #define f_reg(rex, byte) ((((byte)>>3)&0x7) | (rex & REX_R ? 0x8 : 0x0))
843 #define f_rm(rex, byte) (((byte)&0x7) | (rex & REX_B ? 0x8 : 0x0))
845 #define sib_ss(rex, byte) ((byte)>>6)
846 #define sib_index(rex, byte) ((((byte)>>3)&0x7) | (rex & REX_X ? 0x8 : 0x0))
847 #define sib_base(rex, byte) (((byte)&0x7) | (rex & REX_B ? 0x8 : 0x0))
850 int is_reg; /* if reg, reg number is in 'disp' */
857 static const char * const db_reg[2][4][16] = {
859 {{"%al", "%cl", "%dl", "%bl", "%ah", "%ch", "%dh", "%bh",
860 "%r8b", "%r9b", "%r10b", "%r11b", "%r12b", "%r13b", "%r14b", "%r15b" },
861 { "%ax", "%cx", "%dx", "%bx", "%sp", "%bp", "%si", "%di",
862 "%r8w", "%r9w", "%r10w", "%r11w", "%r12w", "%r13w", "%r14w", "%r15w" },
863 { "%eax", "%ecx", "%edx", "%ebx", "%esp", "%ebp", "%esi", "%edi",
864 "%r8d", "%r9d", "%r10d", "%r11d", "%r12d", "%r13d", "%r14d", "%r15d" },
865 { "%rax", "%rcx", "%rdx", "%rbx", "%rsp", "%rbp", "%rsi", "%rdi",
866 "%r8", "%r9", "%r10", "%r11", "%r12", "%r13", "%r14", "%r15" }},
868 {{"%al", "%cl", "%dl", "%bl", "%spl", "%bpl", "%sil", "%dil",
869 "%r8b", "%r9b", "%r10b", "%r11b", "%r12b", "%r13b", "%r14b", "%r15b" },
870 { "%ax", "%cx", "%dx", "%bx", "%sp", "%bp", "%si", "%di",
871 "%r8w", "%r9w", "%r10w", "%r11w", "%r12w", "%r13w", "%r14w", "%r15w" },
872 { "%eax", "%ecx", "%edx", "%ebx", "%esp", "%ebp", "%esi", "%edi",
873 "%r8d", "%r9d", "%r10d", "%r11d", "%r12d", "%r13d", "%r14d", "%r15d" },
874 { "%rax", "%rcx", "%rdx", "%rbx", "%rsp", "%rbp", "%rsi", "%rdi",
875 "%r8", "%r9", "%r10", "%r11", "%r12", "%r13", "%r14", "%r15" }}
878 static const char * const db_seg_reg[8] = {
879 "%es", "%cs", "%ss", "%ds", "%fs", "%gs", "", ""
883 * lengths for size attributes
885 static const int db_lengths[] = {
895 #define get_value_inc(result, loc, size, is_signed) \
896 result = db_get_value((loc), (size), (is_signed)); \
900 db_disasm_esc(db_addr_t loc, int inst, int rex, int short_addr,
901 int size, const char *seg);
902 static void db_print_address(const char *seg, int size, int rex,
903 struct i_addr *addrp);
905 db_read_address(db_addr_t loc, int short_addr, int rex, int regmodrm,
906 struct i_addr *addrp);
909 * Read address at location and return updated location.
912 db_read_address(loc, short_addr, rex, regmodrm, addrp)
917 struct i_addr * addrp; /* out */
919 int mod, rm, sib, index, disp, size, have_sib;
921 mod = f_mod(rex, regmodrm);
922 rm = f_rm(rex, regmodrm);
925 addrp->is_reg = TRUE;
929 addrp->is_reg = FALSE;
937 if ((rm & 0x7) == 4) {
938 get_value_inc(sib, loc, 1, FALSE);
939 rm = sib_base(rex, sib);
940 index = sib_index(rex, sib);
942 addrp->index = db_reg[1][size][index];
943 addrp->ss = sib_ss(rex, sib);
951 get_value_inc(addrp->disp, loc, 4, FALSE);
955 addrp->base = "%eip";
957 addrp->base = "%rip";
960 addrp->base = db_reg[1][size][rm];
965 get_value_inc(disp, loc, 1, TRUE);
967 addrp->base = db_reg[1][size][rm];
971 get_value_inc(disp, loc, 4, FALSE);
973 addrp->base = db_reg[1][size][rm];
980 db_print_address(seg, size, rex, addrp)
984 struct i_addr * addrp;
987 db_printf("%s", db_reg[rex != 0 ? 1 : 0][(size == LONG && (rex & REX_W)) ? QUAD : size][addrp->disp]);
992 db_printf("%s:", seg);
995 if (addrp->disp != 0 || (addrp->base == 0 && addrp->index == 0))
996 db_printsym((db_addr_t)addrp->disp, DB_STGY_ANY);
997 if (addrp->base != 0 || addrp->index != 0) {
1000 db_printf("%s", addrp->base);
1002 db_printf(",%s,%d", addrp->index, 1<<addrp->ss);
1008 * Disassemble floating-point ("escape") instruction
1009 * and return updated location.
1012 db_disasm_esc(loc, inst, rex, short_addr, size, seg)
1021 const struct finst * fp;
1023 struct i_addr address;
1026 get_value_inc(regmodrm, loc, 1, FALSE);
1027 fp = &db_Esc_inst[inst - 0xd8][f_reg(rex, regmodrm)];
1028 mod = f_mod(rex, regmodrm);
1030 if (*fp->f_name == '\0') {
1031 db_printf("<bad instruction>");
1035 * Normal address modes.
1037 loc = db_read_address(loc, short_addr, rex, regmodrm, &address);
1038 db_printf("%s", fp->f_name);
1039 switch(fp->f_size) {
1062 db_print_address(seg, BYTE, rex, &address);
1066 * 'reg-reg' - special formats
1068 switch (fp->f_rrmode) {
1070 name = (fp->f_rrname) ? fp->f_rrname : fp->f_name;
1071 db_printf("%s\t%%st,%%st(%d)",name,f_rm(rex, regmodrm));
1074 name = (fp->f_rrname) ? fp->f_rrname : fp->f_name;
1075 db_printf("%s\t%%st(%d),%%st",name, f_rm(rex, regmodrm));
1078 name = (fp->f_rrname) ? fp->f_rrname : fp->f_name;
1079 db_printf("%s\t%%st(%d)",name, f_rm(rex, regmodrm));
1082 name = ((const char * const *)fp->f_rrname)[f_rm(rex, regmodrm)];
1085 db_printf("%s", name);
1088 name = ((const char * const *)fp->f_rrname)[f_rm(rex, regmodrm)];
1091 db_printf("%s\t%%ax", name);
1095 db_printf("<bad instruction>");
1104 * Disassemble instruction at 'loc'. 'altfmt' specifies an
1105 * (optional) alternate format. Return address of start of
1109 db_disasm(loc, altfmt)
1117 const struct inst * ip;
1118 const char * i_name;
1130 struct i_addr address;
1132 get_value_inc(inst, loc, 1, FALSE);
1143 case 0x66: /* data16 */
1171 db_printf("repne ");
1174 db_printf("repe "); /* XXX repe VS rep */
1180 if (inst >= 0x40 && inst < 0x50) {
1185 get_value_inc(inst, loc, 1, FALSE);
1189 if (inst >= 0xd8 && inst <= 0xdf) {
1190 loc = db_disasm_esc(loc, inst, rex, short_addr, size, seg);
1196 get_value_inc(inst, loc, 1, FALSE);
1197 ip = db_inst_0f[inst>>4];
1206 ip = &db_inst_table[inst];
1208 if (ip->i_has_modrm) {
1209 get_value_inc(regmodrm, loc, 1, FALSE);
1210 loc = db_read_address(loc, short_addr, rex, regmodrm, &address);
1213 i_name = ip->i_name;
1214 i_size = ip->i_size;
1215 i_mode = ip->i_mode;
1217 if (ip->i_extra == db_Grp1 || ip->i_extra == db_Grp2 ||
1218 ip->i_extra == db_Grp6 || ip->i_extra == db_Grp7 ||
1219 ip->i_extra == db_Grp8 || ip->i_extra == db_Grp9) {
1220 i_name = ((const char * const *)ip->i_extra)[f_reg(rex, regmodrm)];
1222 else if (ip->i_extra == db_Grp3) {
1224 ip = &ip[f_reg(rex, regmodrm)];
1225 i_name = ip->i_name;
1226 i_mode = ip->i_mode;
1228 else if (ip->i_extra == db_Grp4 || ip->i_extra == db_Grp5) {
1230 ip = &ip[f_reg(rex, regmodrm)];
1231 i_name = ip->i_name;
1232 i_mode = ip->i_mode;
1233 i_size = ip->i_size;
1236 if (i_size == SDEP) {
1238 db_printf("%s", i_name);
1240 db_printf("%s", (const char *)ip->i_extra);
1243 db_printf("%s", i_name);
1244 if ((inst >= 0x50 && inst <= 0x5f) || inst == 0x68 || inst == 0x6a) {
1248 if (i_size != NONE) {
1249 if (i_size == BYTE) {
1253 else if (i_size == WORD) {
1257 else if (size == WORD)
1270 i_mode >>= 8, first = FALSE)
1275 switch (i_mode & 0xFF) {
1278 db_print_address(seg, size, rex, &address);
1283 db_print_address(seg, size, rex, &address);
1287 db_print_address(seg, (rex & REX_W) ? QUAD : LONG, rex, &address);
1291 db_print_address(seg, LONG, 0, &address);
1295 db_print_address(seg, WORD, rex, &address);
1299 db_print_address(seg, BYTE, rex, &address);
1303 db_printf("%s", db_reg[rex != 0 ? 1 : 0][(size == LONG && (rex & REX_W)) ? QUAD : size][f_reg(rex, regmodrm)]);
1307 db_printf("%s", db_reg[rex != 0 ? 1 : 0][WORD][f_reg(rex, regmodrm)]);
1311 db_printf("%s", db_reg[0][QUAD][f_rm(rex, inst)]);
1315 db_printf("%s", db_reg[rex != 0 ? 1 : 0][(rex & REX_R) ? QUAD : LONG][f_rm(rex, inst)]);
1319 db_printf("%s", db_seg_reg[f_reg(rex, regmodrm)]);
1323 db_printf("%s", db_seg_reg[f_reg(rex, inst)]);
1327 db_printf("%s", db_reg[rex != 0 ? 1 : 0][size][0]); /* acc */
1332 db_printf("%s:", seg);
1333 db_printf("(%s)", short_addr ? "%bx" : "%ebx");
1346 db_printf("%s:", seg);
1347 db_printf("(%s)", short_addr ? "%si" : "%rsi");
1351 db_printf("%%es:(%s)", short_addr ? "%di" : "%rdi");
1355 db_printf("%%cr%d", f_reg(rex, regmodrm));
1359 db_printf("%%dr%d", f_reg(rex, regmodrm));
1363 db_printf("%%tr%d", f_reg(rex, regmodrm));
1367 len = db_lengths[size];
1368 get_value_inc(imm, loc, len, FALSE);
1369 db_printf("$%#r", imm);
1373 len = db_lengths[(size == LONG && (rex & REX_W)) ? QUAD : size];
1374 get_value_inc(imm, loc, len, FALSE);
1375 db_printf("$%+#r", imm);
1379 get_value_inc(imm, loc, 1, FALSE);
1380 db_printf("$%#r", imm);
1384 get_value_inc(imm, loc, 1, FALSE);
1386 db_printf("$%#r", imm);
1390 get_value_inc(imm, loc, 1, TRUE);
1393 db_printf("$%+#r", imm);
1397 get_value_inc(imm, loc, 2, FALSE);
1398 db_printf("$%#r", imm);
1402 len = db_lengths[rex & REX_W ? QUAD : LONG];
1403 get_value_inc(imm64, loc, len, FALSE);
1404 db_printf("$%#lr", imm64);
1408 len = (short_addr ? 2 : 4);
1409 get_value_inc(displ, loc, len, FALSE);
1411 db_printf("%s:%+#r",seg, displ);
1413 db_printsym((db_addr_t)displ, DB_STGY_ANY);
1417 get_value_inc(displ, loc, 1, TRUE);
1421 db_printsym((db_addr_t)displ, DB_STGY_XTRN);
1425 len = db_lengths[(size == LONG && (rex & REX_W)) ? QUAD : size];
1426 get_value_inc(displ, loc, len, FALSE);
1430 db_printsym((db_addr_t)displ, DB_STGY_XTRN);
1442 len = db_lengths[size];
1443 get_value_inc(imm, loc, len, FALSE); /* offset */
1444 get_value_inc(imm2, loc, 2, FALSE); /* segment */
1445 db_printf("$%#r,%#r", imm2, imm);