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Started implementation of the functions GetDefaultCommConfigA/W.
[wine.git] / debugger / db_disasm.c
blob66003e1fadc10f59c036f599e2e2ad9c0dca4789
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 "AS IS"
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 Mellon
24 * the rights to redistribute these changes.
25 */
26 /*
27 * HISTORY
28 *
29 * Revision 2.6 92/01/03 20:05:00 dbg
30 * Add a switch to disassemble 16-bit code.
31 * Fix spelling of 'lods' opcodes.
32 * [91/10/30 dbg]
33 *
34 * Revision 2.5 91/10/09 16:05:58 af
35 * Supported disassemble of non current task by passing task parameter.
36 * [91/08/29 tak]
37 *
38 * Revision 2.4 91/05/14 16:05:04 mrt
39 * Correcting copyright
40 *
41 * Revision 2.3 91/02/05 17:11:03 mrt
42 * Changed to new Mach copyright
43 * [91/02/01 17:31:03 mrt]
44 *
45 * Revision 2.2 90/08/27 21:55:56 dbg
46 * Fix register operand for move to/from control/test/debug
47 * register instructions. Add i486 instructions.
48 * [90/08/27 dbg]
49 *
50 * Import db_sym.h. Print instruction displacements in
51 * current radix (signed). Change calling sequence of
52 * db_disasm.
53 * [90/08/21 dbg]
54 * Fix includes.
55 * [90/08/08 dbg]
56 * Created.
57 * [90/07/25 dbg]
58 *
59 */
60
61 /*
62 * Instruction disassembler.
63 */
64
65 #include "debugger.h"
66
67 #ifdef __i386__
68
69 /*
70 * Switch to disassemble 16-bit code.
71 */
72 static BOOL db_disasm_16 = FALSE;
73
74 /*
75 * Flag to indicate whether we need to display instruction,
76 * or whether we just need to know the address of the next
77 * instruction.
78 */
79 static BOOL db_display = FALSE;
80
81 /*
82 * Size attributes
83 */
84 #define BYTE 0
85 #define WORD 1
86 #define LONG 2
87 #define QUAD 3
88 #define SNGL 4
89 #define DBLR 5
90 #define EXTR 6
91 #define SDEP 7
92 #define NONE 8
93
94 /*
95 * Addressing modes
96 */
97 #define E 1 /* general effective address */
98 #define Eind 2 /* indirect address (jump, call) */
99 #define Ew 3 /* address, word size */
100 #define Eb 4 /* address, byte size */
101 #define R 5 /* register, in 'reg' field */
102 #define Rw 6 /* word register, in 'reg' field */
103 #define Ri 7 /* register in instruction */
104 #define S 8 /* segment reg, in 'reg' field */
105 #define Si 9 /* segment reg, in instruction */
106 #define A 10 /* accumulator */
107 #define BX 11 /* (bx) */
108 #define CL 12 /* cl, for shifts */
109 #define DX 13 /* dx, for IO */
110 #define SI 14 /* si */
111 #define DI 15 /* di */
112 #define CR 16 /* control register */
113 #define DR 17 /* debug register */
114 #define TR 18 /* test register */
115 #define I 19 /* immediate, unsigned */
116 #define Is 20 /* immediate, signed */
117 #define Ib 21 /* byte immediate, unsigned */
118 #define Ibs 22 /* byte immediate, signed */
119 #define Iw 23 /* word immediate, unsigned */
120 #define Il 24 /* long immediate */
121 #define O 25 /* direct address */
122 #define Db 26 /* byte displacement from EIP */
123 #define Dl 27 /* long displacement from EIP */
124 #define o1 28 /* constant 1 */
125 #define o3 29 /* constant 3 */
126 #define OS 30 /* immediate offset/segment */
127 #define ST 31 /* FP stack top */
128 #define STI 32 /* FP stack */
129 #define X 33 /* extended FP op */
130 #define XA 34 /* for 'fstcw %ax' */
131
132 struct inst {
133 const char *i_name; /* name */
134 short i_has_modrm; /* has regmodrm byte */
135 short i_size; /* operand size */
136 int i_mode; /* addressing modes */
137 const char *i_extra; /* pointer to extra opcode table */
138 };
139
140 #define op1(x) (x)
141 #define op2(x,y) ((x)|((y)<<8))
142 #define op3(x,y,z) ((x)|((y)<<8)|((z)<<16))
143
144 struct finst {
145 const char *f_name; /* name for memory instruction */
146 int f_size; /* size for memory instruction */
147 int f_rrmode; /* mode for rr instruction */
148 const char *f_rrname; /* name for rr instruction
149 (or pointer to table) */
150 };
151
152 static const char * const db_Grp6[] = {
153 "sldt",
154 "str",
155 "lldt",
156 "ltr",
157 "verr",
158 "verw",
159 "",
160 ""
161 };
162
163 static const char * const db_Grp7[] = {
164 "sgdt",
165 "sidt",
166 "lgdt",
167 "lidt",
168 "smsw",
169 "",
170 "lmsw",
171 "invlpg"
172 };
173
174 static const char * const db_Grp8[] = {
175 "",
176 "",
177 "",
178 "",
179 "bt",
180 "bts",
181 "btr",
182 "btc"
183 };
184
185 static const struct inst db_inst_0f0x[] = {
186 /*00*/ { "", TRUE, NONE, op1(Ew), (char *)db_Grp6 },
187 /*01*/ { "", TRUE, NONE, op1(Ew), (char *)db_Grp7 },
188 /*02*/ { "lar", TRUE, LONG, op2(E,R), 0 },
189 /*03*/ { "lsl", TRUE, LONG, op2(E,R), 0 },
190 /*04*/ { "", FALSE, NONE, 0, 0 },
191 /*05*/ { "", FALSE, NONE, 0, 0 },
192 /*06*/ { "clts", FALSE, NONE, 0, 0 },
193 /*07*/ { "", FALSE, NONE, 0, 0 },
194
195 /*08*/ { "invd", FALSE, NONE, 0, 0 },
196 /*09*/ { "wbinvd",FALSE, NONE, 0, 0 },
197 /*0a*/ { "", FALSE, NONE, 0, 0 },
198 /*0b*/ { "", FALSE, NONE, 0, 0 },
199 /*0c*/ { "", FALSE, NONE, 0, 0 },
200 /*0d*/ { "", FALSE, NONE, 0, 0 },
201 /*0e*/ { "", FALSE, NONE, 0, 0 },
202 /*0f*/ { "", FALSE, NONE, 0, 0 },
203 };
204
205 static const struct inst db_inst_0f2x[] = {
206 /*20*/ { "mov", TRUE, LONG, op2(CR,E), 0 }, /* use E for reg */
207 /*21*/ { "mov", TRUE, LONG, op2(DR,E), 0 }, /* since mod == 11 */
208 /*22*/ { "mov", TRUE, LONG, op2(E,CR), 0 },
209 /*23*/ { "mov", TRUE, LONG, op2(E,DR), 0 },
210 /*24*/ { "mov", TRUE, LONG, op2(TR,E), 0 },
211 /*25*/ { "", FALSE, NONE, 0, 0 },
212 /*26*/ { "mov", TRUE, LONG, op2(E,TR), 0 },
213 /*27*/ { "", FALSE, NONE, 0, 0 },
214
215 /*28*/ { "", FALSE, NONE, 0, 0 },
216 /*29*/ { "", FALSE, NONE, 0, 0 },
217 /*2a*/ { "", FALSE, NONE, 0, 0 },
218 /*2b*/ { "", FALSE, NONE, 0, 0 },
219 /*2c*/ { "", FALSE, NONE, 0, 0 },
220 /*2d*/ { "", FALSE, NONE, 0, 0 },
221 /*2e*/ { "", FALSE, NONE, 0, 0 },
222 /*2f*/ { "", FALSE, NONE, 0, 0 },
223 };
224
225 static const struct inst db_inst_0f8x[] = {
226 /*80*/ { "jo", FALSE, NONE, op1(Dl), 0 },
227 /*81*/ { "jno", FALSE, NONE, op1(Dl), 0 },
228 /*82*/ { "jb", FALSE, NONE, op1(Dl), 0 },
229 /*83*/ { "jnb", FALSE, NONE, op1(Dl), 0 },
230 /*84*/ { "jz", FALSE, NONE, op1(Dl), 0 },
231 /*85*/ { "jnz", FALSE, NONE, op1(Dl), 0 },
232 /*86*/ { "jbe", FALSE, NONE, op1(Dl), 0 },
233 /*87*/ { "jnbe", FALSE, NONE, op1(Dl), 0 },
234
235 /*88*/ { "js", FALSE, NONE, op1(Dl), 0 },
236 /*89*/ { "jns", FALSE, NONE, op1(Dl), 0 },
237 /*8a*/ { "jp", FALSE, NONE, op1(Dl), 0 },
238 /*8b*/ { "jnp", FALSE, NONE, op1(Dl), 0 },
239 /*8c*/ { "jl", FALSE, NONE, op1(Dl), 0 },
240 /*8d*/ { "jnl", FALSE, NONE, op1(Dl), 0 },
241 /*8e*/ { "jle", FALSE, NONE, op1(Dl), 0 },
242 /*8f*/ { "jnle", FALSE, NONE, op1(Dl), 0 },
243 };
244
245 static const struct inst db_inst_0f9x[] = {
246 /*90*/ { "seto", TRUE, NONE, op1(Eb), 0 },
247 /*91*/ { "setno", TRUE, NONE, op1(Eb), 0 },
248 /*92*/ { "setb", TRUE, NONE, op1(Eb), 0 },
249 /*93*/ { "setnb", TRUE, NONE, op1(Eb), 0 },
250 /*94*/ { "setz", TRUE, NONE, op1(Eb), 0 },
251 /*95*/ { "setnz", TRUE, NONE, op1(Eb), 0 },
252 /*96*/ { "setbe", TRUE, NONE, op1(Eb), 0 },
253 /*97*/ { "setnbe",TRUE, NONE, op1(Eb), 0 },
254
255 /*98*/ { "sets", TRUE, NONE, op1(Eb), 0 },
256 /*99*/ { "setns", TRUE, NONE, op1(Eb), 0 },
257 /*9a*/ { "setp", TRUE, NONE, op1(Eb), 0 },
258 /*9b*/ { "setnp", TRUE, NONE, op1(Eb), 0 },
259 /*9c*/ { "setl", TRUE, NONE, op1(Eb), 0 },
260 /*9d*/ { "setnl", TRUE, NONE, op1(Eb), 0 },
261 /*9e*/ { "setle", TRUE, NONE, op1(Eb), 0 },
262 /*9f*/ { "setnle",TRUE, NONE, op1(Eb), 0 },
263 };
264
265 static const struct inst db_inst_0fax[] = {
266 /*a0*/ { "push", FALSE, NONE, op1(Si), 0 },
267 /*a1*/ { "pop", FALSE, NONE, op1(Si), 0 },
268 /*a2*/ { "cpuid", FALSE, NONE, 0, 0 },
269 /*a3*/ { "bt", TRUE, LONG, op2(E,R), 0 },
270 /*a4*/ { "shld", TRUE, LONG, op3(Ib,E,R), 0 },
271 /*a5*/ { "shld", TRUE, LONG, op3(CL,E,R), 0 },
272 /*a6*/ { "", FALSE, NONE, 0, 0 },
273 /*a7*/ { "", FALSE, NONE, 0, 0 },
274
275 /*a8*/ { "push", FALSE, NONE, op1(Si), 0 },
276 /*a9*/ { "pop", FALSE, NONE, op1(Si), 0 },
277 /*aa*/ { "", FALSE, NONE, 0, 0 },
278 /*ab*/ { "bts", TRUE, LONG, op2(E,R), 0 },
279 /*ac*/ { "shrd", TRUE, LONG, op3(Ib,E,R), 0 },
280 /*ad*/ { "shrd", TRUE, LONG, op3(CL,E,R), 0 },
281 /*a6*/ { "", FALSE, NONE, 0, 0 },
282 /*a7*/ { "imul", TRUE, LONG, op2(E,R), 0 },
283 };
284
285 static const struct inst db_inst_0fbx[] = {
286 /*b0*/ { "cmpxchg",TRUE, BYTE, op2(E, R), 0 },
287 /*b1*/ { "cmpxchg",TRUE, LONG, op2(E, R), 0 },
288 /*b2*/ { "lss", TRUE, LONG, op2(E, R), 0 },
289 /*b3*/ { "bts", TRUE, LONG, op2(R, E), 0 },
290 /*b4*/ { "lfs", TRUE, LONG, op2(E, R), 0 },
291 /*b5*/ { "lgs", TRUE, LONG, op2(E, R), 0 },
292 /*b6*/ { "movzb", TRUE, LONG, op2(E, R), 0 },
293 /*b7*/ { "movzw", TRUE, LONG, op2(E, R), 0 },
294
295 /*b8*/ { "", FALSE, NONE, 0, 0 },
296 /*b9*/ { "", FALSE, NONE, 0, 0 },
297 /*ba*/ { "", TRUE, LONG, op2(Ib, E), (char *)db_Grp8 },
298 /*bb*/ { "btc", TRUE, LONG, op2(R, E), 0 },
299 /*bc*/ { "bsf", TRUE, LONG, op2(E, R), 0 },
300 /*bd*/ { "bsr", TRUE, LONG, op2(E, R), 0 },
301 /*be*/ { "movsb", TRUE, LONG, op2(E, R), 0 },
302 /*bf*/ { "movsw", TRUE, LONG, op2(E, R), 0 },
303 };
304
305 static const struct inst db_inst_0fcx[] = {
306 /*c0*/ { "xadd", TRUE, BYTE, op2(R, E), 0 },
307 /*c1*/ { "xadd", TRUE, LONG, op2(R, E), 0 },
308 /*c2*/ { "", FALSE, NONE, 0, 0 },
309 /*c3*/ { "", FALSE, NONE, 0, 0 },
310 /*c4*/ { "", FALSE, NONE, 0, 0 },
311 /*c5*/ { "", FALSE, NONE, 0, 0 },
312 /*c6*/ { "", FALSE, NONE, 0, 0 },
313 /*c7*/ { "", FALSE, NONE, 0, 0 },
314 /*c8*/ { "bswap", FALSE, LONG, op1(Ri), 0 },
315 /*c9*/ { "bswap", FALSE, LONG, op1(Ri), 0 },
316 /*ca*/ { "bswap", FALSE, LONG, op1(Ri), 0 },
317 /*cb*/ { "bswap", FALSE, LONG, op1(Ri), 0 },
318 /*cc*/ { "bswap", FALSE, LONG, op1(Ri), 0 },
319 /*cd*/ { "bswap", FALSE, LONG, op1(Ri), 0 },
320 /*ce*/ { "bswap", FALSE, LONG, op1(Ri), 0 },
321 /*cf*/ { "bswap", FALSE, LONG, op1(Ri), 0 },
322 };
323
324 static const struct inst db_inst_0fdx[] = {
325 /*c0*/ { "cmpxchg",TRUE, BYTE, op2(R, E), 0 },
326 /*c1*/ { "cmpxchg",TRUE, LONG, op2(R, E), 0 },
327 /*c2*/ { "", FALSE, NONE, 0, 0 },
328 /*c3*/ { "", FALSE, NONE, 0, 0 },
329 /*c4*/ { "", FALSE, NONE, 0, 0 },
330 /*c5*/ { "", FALSE, NONE, 0, 0 },
331 /*c6*/ { "", FALSE, NONE, 0, 0 },
332 /*c7*/ { "", FALSE, NONE, 0, 0 },
333 /*c8*/ { "", FALSE, NONE, 0, 0 },
334 /*c9*/ { "", FALSE, NONE, 0, 0 },
335 /*ca*/ { "", FALSE, NONE, 0, 0 },
336 /*cb*/ { "", FALSE, NONE, 0, 0 },
337 /*cc*/ { "", FALSE, NONE, 0, 0 },
338 /*cd*/ { "", FALSE, NONE, 0, 0 },
339 /*ce*/ { "", FALSE, NONE, 0, 0 },
340 /*cf*/ { "", FALSE, NONE, 0, 0 },
341 };
342
343 static const struct inst * const db_inst_0f[] = {
344 db_inst_0f0x,
345 0,
346 db_inst_0f2x,
347 0,
348 0,
349 0,
350 0,
351 0,
352 db_inst_0f8x,
353 db_inst_0f9x,
354 db_inst_0fax,
355 db_inst_0fbx,
356 db_inst_0fcx,
357 db_inst_0fdx,
358 0,
359 0
360 };
361
362 static const char * const db_Esc92[] = {
363 "fnop", "", "", "", "", "", "", ""
364 };
365 static const char * const db_Esc93[] = {
366 "", "", "", "", "", "", "", ""
367 };
368 static const char * const db_Esc94[] = {
369 "fchs", "fabs", "", "", "ftst", "fxam", "", ""
370 };
371 static const char * const db_Esc95[] = {
372 "fld1", "fldl2t","fldl2e","fldpi","fldlg2","fldln2","fldz",""
373 };
374 static const char * const db_Esc96[] = {
375 "f2xm1","fyl2x","fptan","fpatan","fxtract","fprem1","fdecstp",
376 "fincstp"
377 };
378 static const char * const db_Esc97[] = {
379 "fprem","fyl2xp1","fsqrt","fsincos","frndint","fscale","fsin","fcos"
380 };
381
382 static const char * const db_Esca4[] = {
383 "", "fucompp","", "", "", "", "", ""
384 };
385
386 static const char * const db_Escb4[] = {
387 "", "", "fnclex","fninit","", "", "", ""
388 };
389
390 static const char * const db_Esce3[] = {
391 "", "fcompp","", "", "", "", "", ""
392 };
393
394 static const char * const db_Escf4[] = {
395 "fnstsw","", "", "", "", "", "", ""
396 };
397
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 },
407 };
408
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), (char *)db_Esc92 },
413 /*3*/ { "fstp", SNGL, op1(X), (char *)db_Esc93 },
414 /*4*/ { "fldenv", NONE, op1(X), (char *)db_Esc94 },
415 /*5*/ { "fldcw", NONE, op1(X), (char *)db_Esc95 },
416 /*6*/ { "fnstenv",NONE, op1(X), (char *)db_Esc96 },
417 /*7*/ { "fnstcw", NONE, op1(X), (char *)db_Esc97 },
418 };
419
420 static const struct finst db_Esca[] = {
421 /*0*/ { "fiadd", WORD, 0, 0 },
422 /*1*/ { "fimul", WORD, 0, 0 },
423 /*2*/ { "ficom", WORD, 0, 0 },
424 /*3*/ { "ficomp", WORD, 0, 0 },
425 /*4*/ { "fisub", WORD, op1(X), (char *)db_Esca4 },
426 /*5*/ { "fisubr", WORD, 0, 0 },
427 /*6*/ { "fidiv", WORD, 0, 0 },
428 /*7*/ { "fidivr", WORD, 0, 0 }
429 };
430
431 static const struct finst db_Escb[] = {
432 /*0*/ { "fild", WORD, 0, 0 },
433 /*1*/ { "", NONE, 0, 0 },
434 /*2*/ { "fist", WORD, 0, 0 },
435 /*3*/ { "fistp", WORD, 0, 0 },
436 /*4*/ { "", WORD, op1(X), (char *)db_Escb4 },
437 /*5*/ { "fld", EXTR, 0, 0 },
438 /*6*/ { "", WORD, 0, 0 },
439 /*7*/ { "fstp", EXTR, 0, 0 },
440 };
441
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, op2(ST,STI), 0 },
446 /*3*/ { "fcomp", DBLR, op2(ST,STI), 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" },
451 };
452
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 },
462 };
463
464 static const struct finst db_Esce[] = {
465 /*0*/ { "fiadd", LONG, op2(ST,STI), "faddp" },
466 /*1*/ { "fimul", LONG, op2(ST,STI), "fmulp" },
467 /*2*/ { "ficom", LONG, 0, 0 },
468 /*3*/ { "ficomp", LONG, op1(X), (char *)db_Esce3 },
469 /*4*/ { "fisub", LONG, op2(ST,STI), "fsubrp" },
470 /*5*/ { "fisubr", LONG, op2(ST,STI), "fsubp" },
471 /*6*/ { "fidiv", LONG, op2(ST,STI), "fdivrp" },
472 /*7*/ { "fidivr", LONG, op2(ST,STI), "fdivp" },
473 };
474
475 static const struct finst db_Escf[] = {
476 /*0*/ { "fild", LONG, 0, 0 },
477 /*1*/ { "", LONG, 0, 0 },
478 /*2*/ { "fist", LONG, 0, 0 },
479 /*3*/ { "fistp", LONG, 0, 0 },
480 /*4*/ { "fbld", NONE, op1(XA), (char *)db_Escf4 },
481 /*5*/ { "fld", QUAD, 0, 0 },
482 /*6*/ { "fbstp", NONE, 0, 0 },
483 /*7*/ { "fstp", QUAD, 0, 0 },
484 };
485
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
489 };
490
491 static const char * const db_Grp1[] = {
492 "add",
493 "or",
494 "adc",
495 "sbb",
496 "and",
497 "sub",
498 "xor",
499 "cmp"
500 };
501
502 static const char * const db_Grp2[] = {
503 "rol",
504 "ror",
505 "rcl",
506 "rcr",
507 "shl",
508 "shr",
509 "shl",
510 "sar"
511 };
512
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 },
522 };
523
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 }
533 };
534
535 static const struct inst db_Grp5[] = {
536 { "inc", TRUE, LONG, op1(E), 0 },
537 { "dec", TRUE, LONG, op1(E), 0 },
538 { "call", TRUE, NONE, op1(Eind),0 },
539 { "lcall", TRUE, NONE, op1(Eind),0 },
540 { "jmp", TRUE, NONE, op1(Eind),0 },
541 { "ljmp", TRUE, NONE, op1(Eind),0 },
542 { "push", TRUE, LONG, op1(E), 0 },
543 { "", TRUE, NONE, 0, 0 }
544 };
545
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(Is, 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 },
555
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 },
564
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(Is, 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 },
573
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(Is, 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 },
582
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*/ { "aaa", FALSE, NONE, 0, 0 },
591
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(Is, A), 0 },
597 /*2d*/ { "sub", FALSE, LONG, op2(Is, A), 0 },
598 /*2e*/ { "", FALSE, NONE, 0, 0 },
599 /*2f*/ { "das", FALSE, NONE, 0, 0 },
600
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*/ { "daa", FALSE, NONE, 0, 0 },
609
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(Is, A), 0 },
615 /*3d*/ { "cmp", FALSE, LONG, op2(Is, A), 0 },
616 /*3e*/ { "", FALSE, NONE, 0, 0 },
617 /*3f*/ { "aas", FALSE, NONE, 0, 0 },
618
619 /*40*/ { "inc", FALSE, LONG, op1(Ri), 0 },
620 /*41*/ { "inc", FALSE, LONG, op1(Ri), 0 },
621 /*42*/ { "inc", FALSE, LONG, op1(Ri), 0 },
622 /*43*/ { "inc", FALSE, LONG, op1(Ri), 0 },
623 /*44*/ { "inc", FALSE, LONG, op1(Ri), 0 },
624 /*45*/ { "inc", FALSE, LONG, op1(Ri), 0 },
625 /*46*/ { "inc", FALSE, LONG, op1(Ri), 0 },
626 /*47*/ { "inc", FALSE, LONG, op1(Ri), 0 },
627
628 /*48*/ { "dec", FALSE, LONG, op1(Ri), 0 },
629 /*49*/ { "dec", FALSE, LONG, op1(Ri), 0 },
630 /*4a*/ { "dec", FALSE, LONG, op1(Ri), 0 },
631 /*4b*/ { "dec", FALSE, LONG, op1(Ri), 0 },
632 /*4c*/ { "dec", FALSE, LONG, op1(Ri), 0 },
633 /*4d*/ { "dec", FALSE, LONG, op1(Ri), 0 },
634 /*4e*/ { "dec", FALSE, LONG, op1(Ri), 0 },
635 /*4f*/ { "dec", FALSE, LONG, op1(Ri), 0 },
636
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 },
645
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 },
654
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*/ { "arpl", TRUE, NONE, op2(Ew,Rw), 0 },
659
660 /*64*/ { "", FALSE, NONE, 0, 0 },
661 /*65*/ { "", FALSE, NONE, 0, 0 },
662 /*66*/ { "", FALSE, NONE, 0, 0 },
663 /*67*/ { "", FALSE, NONE, 0, 0 },
664
665 /*68*/ { "push", FALSE, LONG, op1(I), 0 },
666 /*69*/ { "imul", TRUE, LONG, op3(I,E,R), 0 },
667 /*6a*/ { "push", FALSE, LONG, op1(Ib), 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 },
673
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 },
682
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 },
691
692 /*80*/ { "", TRUE, BYTE, op2(I, E), (char *)db_Grp1 },
693 /*81*/ { "", TRUE, LONG, op2(I, E), (char *)db_Grp1 },
694 /*82*/ { "", TRUE, BYTE, op2(Is,E), (char *)db_Grp1 },
695 /*83*/ { "", TRUE, LONG, op2(Ibs,E), (char *)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 },
700
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 },
709
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 },
718
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 },
727
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 },
736
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(DI), 0 },
744 /*af*/ { "scas", FALSE, LONG, op1(DI), 0 },
745
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 },
754
755 /*b8*/ { "mov", FALSE, LONG, op2(I, Ri), 0 },
756 /*b9*/ { "mov", FALSE, LONG, op2(I, Ri), 0 },
757 /*ba*/ { "mov", FALSE, LONG, op2(I, Ri), 0 },
758 /*bb*/ { "mov", FALSE, LONG, op2(I, Ri), 0 },
759 /*bc*/ { "mov", FALSE, LONG, op2(I, Ri), 0 },
760 /*bd*/ { "mov", FALSE, LONG, op2(I, Ri), 0 },
761 /*be*/ { "mov", FALSE, LONG, op2(I, Ri), 0 },
762 /*bf*/ { "mov", FALSE, LONG, op2(I, Ri), 0 },
763
764 /*c0*/ { "", TRUE, BYTE, op2(Ib, E), (char *)db_Grp2 },
765 /*c1*/ { "", TRUE, LONG, op2(Ib, E), (char *)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 },
772
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 },
781
782 /*d0*/ { "", TRUE, BYTE, op2(o1, E), (char *)db_Grp2 },
783 /*d1*/ { "", TRUE, LONG, op2(o1, E), (char *)db_Grp2 },
784 /*d2*/ { "", TRUE, BYTE, op2(CL, E), (char *)db_Grp2 },
785 /*d3*/ { "", TRUE, LONG, op2(CL, E), (char *)db_Grp2 },
786 /*d4*/ { "aam", TRUE, NONE, 0, 0 },
787 /*d5*/ { "aad", TRUE, NONE, 0, 0 },
788 /*d6*/ { "", FALSE, NONE, 0, 0 },
789 /*d7*/ { "xlat", FALSE, BYTE, op1(BX), 0 },
790
791 /*d8*/ { "", TRUE, NONE, 0, (char *)db_Esc8 },
792 /*d9*/ { "", TRUE, NONE, 0, (char *)db_Esc9 },
793 /*da*/ { "", TRUE, NONE, 0, (char *)db_Esca },
794 /*db*/ { "", TRUE, NONE, 0, (char *)db_Escb },
795 /*dc*/ { "", TRUE, NONE, 0, (char *)db_Escc },
796 /*dd*/ { "", TRUE, NONE, 0, (char *)db_Escd },
797 /*de*/ { "", TRUE, NONE, 0, (char *)db_Esce },
798 /*df*/ { "", TRUE, NONE, 0, (char *)db_Escf },
799
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 },
808
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 },
817
818 /*f0*/ { "", FALSE, NONE, 0, 0 },
819 /*f1*/ { "", 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, (char *)db_Grp3 },
825 /*f7*/ { "", TRUE, LONG, 0, (char *)db_Grp3 },
826
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, (char *)db_Grp4 },
834 /*ff*/ { "", TRUE, NONE, 0, (char *)db_Grp5 },
835 };
836
837 static const struct inst db_bad_inst =
838 { "???", FALSE, NONE, 0, 0 }
839 ;
840
841 #define f_mod(byte) ((byte)>>6)
842 #define f_reg(byte) (((byte)>>3)&0x7)
843 #define f_rm(byte) ((byte)&0x7)
844
845 #define sib_ss(byte) ((byte)>>6)
846 #define sib_index(byte) (((byte)>>3)&0x7)
847 #define sib_base(byte) ((byte)&0x7)
848
849 struct i_addr {
850 int is_reg; /* if reg, reg number is in 'disp' */
851 int disp;
852 const char * base;
853 const char * index;
854 int ss;
855 };
856
857 static const char * const db_index_reg_16[8] = {
858 "%bx,%si",
859 "%bx,%di",
860 "%bp,%si",
861 "%bp,%di",
862 "%si",
863 "%di",
864 "%bp",
865 "%bx"
866 };
867
868 static const char * const db_reg[3][8] = {
869 { "%al", "%cl", "%dl", "%bl", "%ah", "%ch", "%dh", "%bh" },
870 { "%ax", "%cx", "%dx", "%bx", "%sp", "%bp", "%si", "%di" },
871 { "%eax", "%ecx", "%edx", "%ebx", "%esp", "%ebp", "%esi", "%edi" }
872 };
873
874 static const char * const db_seg_reg[8] = {
875 "%es", "%cs", "%ss", "%ds", "%fs", "%gs", "", ""
876 };
877
878 /*
879 * lengths for size attributes
880 */
881 static const int db_lengths[] = {
882 1, /* BYTE */
883 2, /* WORD */
884 4, /* LONG */
885 8, /* QUAD */
886 4, /* SNGL */
887 8, /* DBLR */
888 10, /* EXTR */
889 };
890
891 static unsigned int db_get_task_value( const DBG_ADDR *addr,
892 int size, int is_signed )
893 {
894 unsigned int result = 0;
895 char buffer[4];
896
897 if (size != 1 && size != 2 && size != 4) {
898 DEBUG_Printf(DBG_CHN_MESG, "Illegal size specified\n");
899 } else {
900 DEBUG_READ_MEM((void*)DEBUG_ToLinear( addr ), buffer, size);
901
902 switch(size)
903 {
904 case 4:
905 if (is_signed) result = (unsigned int) *(int *)buffer;
906 else result = *(unsigned int *)buffer;
907 break;
908 case 2:
909 if (is_signed) result = (unsigned int) *(short int *)buffer;
910 else result = *(unsigned short int *)buffer;
911 break;
912 case 1:
913 if (is_signed) result = (unsigned int) *(char *)buffer;
914 else result = *(unsigned char *)buffer;
915 break;
916 }
917 }
918 return result;
919 }
920
921 #define get_value_inc(result, addr, size, is_signed) \
922 result = db_get_task_value((addr), (size), (is_signed)); \
923 if (!db_disasm_16) (addr)->off += (size); \
924 else (addr)->off = ((addr)->off + (size)) & 0xffff;
925
926 /*
927 * Read address at location and return updated location.
928 */
929 void db_read_address( DBG_ADDR *addr, int short_addr, int regmodrm,
930 struct i_addr *addrp )
931 {
932 int mod, rm, sib, index, disp;
933
934 mod = f_mod(regmodrm);
935 rm = f_rm(regmodrm);
936
937 if (mod == 3) {
938 addrp->is_reg = TRUE;
939 addrp->disp = rm;
940 return;
941 }
942 addrp->is_reg = FALSE;
943 addrp->index = 0;
944
945 if (short_addr) {
946 addrp->index = 0;
947 addrp->ss = 0;
948 switch (mod) {
949 case 0:
950 if (rm == 6) {
951 get_value_inc(disp, addr, 2, TRUE);
952 addrp->disp = disp;
953 addrp->base = 0;
954 }
955 else {
956 addrp->disp = 0;
957 addrp->base = db_index_reg_16[rm];
958 }
959 break;
960 case 1:
961 get_value_inc(disp, addr, 1, TRUE);
962 addrp->disp = disp;
963 addrp->base = db_index_reg_16[rm];
964 break;
965 case 2:
966 get_value_inc(disp, addr, 2, TRUE);
967 addrp->disp = disp;
968 addrp->base = db_index_reg_16[rm];
969 break;
970 }
971 }
972 else {
973 if (mod != 3 && rm == 4) {
974 get_value_inc(sib, addr, 1, FALSE);
975 rm = sib_base(sib);
976 index = sib_index(sib);
977 if (index != 4)
978 addrp->index = db_reg[LONG][index];
979 addrp->ss = sib_ss(sib);
980 }
981
982 switch (mod) {
983 case 0:
984 if (rm == 5) {
985 get_value_inc(addrp->disp, addr, 4, FALSE);
986 addrp->base = 0;
987 }
988 else {
989 addrp->disp = 0;
990 addrp->base = db_reg[LONG][rm];
991 }
992 break;
993
994 case 1:
995 get_value_inc(disp, addr, 1, TRUE);
996 addrp->disp = disp;
997 addrp->base = db_reg[LONG][rm];
998 break;
999
1000 case 2:
1001 get_value_inc(disp, addr, 4, FALSE);
1002 addrp->disp = disp;
1003 addrp->base = db_reg[LONG][rm];
1004 break;
1005 }
1006 }
1007 }
1008
1009 static void db_task_printsym(unsigned int addr, int size)
1010 {
1011 DBG_ADDR address;
1012
1013 address.seg = 0;
1014 address.off = addr;
1015
1016 DEBUG_PrintAddress( &address, db_disasm_16 ? 16 : 32, TRUE );
1017 }
1018
1019 void db_print_address(char *seg, int size, struct i_addr *addrp, int byref)
1020 {
1021 if (addrp->is_reg) {
1022 DEBUG_Printf(DBG_CHN_MESG,"%s", db_reg[size][addrp->disp]);
1023 return;
1024 }
1025
1026 if (seg) {
1027 DEBUG_Printf(DBG_CHN_MESG,"%s:", seg);
1028 }
1029
1030 if (addrp->base != 0 || addrp->index != 0) {
1031 DEBUG_Printf(DBG_CHN_MESG,"0x%x(", addrp->disp);
1032 if (addrp->base)
1033 DEBUG_Printf(DBG_CHN_MESG,"%s", addrp->base);
1034 if (addrp->index)
1035 DEBUG_Printf(DBG_CHN_MESG,",%s,%d", addrp->index, 1<<addrp->ss);
1036 DEBUG_Printf(DBG_CHN_MESG,")");
1037 }
1038 else {
1039
1040 /* try to get destination of indirect call
1041 does not work for segmented adresses */
1042 if (!seg && byref) {
1043 void* a1;
1044 void* a2;
1045
1046 DEBUG_Printf(DBG_CHN_MESG,"0x%x -> ", addrp->disp);
1047 if (!DEBUG_READ_MEM((void*)addrp->disp, &a1, sizeof(a1))) {
1048 DEBUG_Printf(DBG_CHN_MESG, "(invalid source)");
1049 } else if (!DEBUG_READ_MEM(a1, &a2, sizeof(a2))) {
1050 DEBUG_Printf(DBG_CHN_MESG, "(invalid destination)");
1051 } else {
1052 db_task_printsym((unsigned long)a1, 0);
1053 }
1054 }
1055 else
1056 db_task_printsym(addrp->disp, size);
1057 }
1058 }
1059
1060 /*
1061 * Disassemble floating-point ("escape") instruction
1062 * and return updated location.
1063 */
1064 void db_disasm_esc( DBG_ADDR *addr, int inst, int short_addr,
1065 int size, char *seg )
1066 {
1067 int regmodrm;
1068 const struct finst *fp;
1069 int mod;
1070 struct i_addr address;
1071 const char * name;
1072
1073 get_value_inc(regmodrm, addr, 1, FALSE);
1074 if( !db_display )
1075 {
1076 return;
1077 }
1078
1079 fp = &db_Esc_inst[inst - 0xd8][f_reg(regmodrm)];
1080 mod = f_mod(regmodrm);
1081 if (mod != 3) {
1082 /*
1083 * Normal address modes.
1084 */
1085 db_read_address( addr, short_addr, regmodrm, &address);
1086 DEBUG_Printf(DBG_CHN_MESG,fp->f_name);
1087 switch(fp->f_size) {
1088 case SNGL:
1089 DEBUG_Printf(DBG_CHN_MESG,"s");
1090 break;
1091 case DBLR:
1092 DEBUG_Printf(DBG_CHN_MESG,"l");
1093 break;
1094 case EXTR:
1095 DEBUG_Printf(DBG_CHN_MESG,"t");
1096 break;
1097 case WORD:
1098 DEBUG_Printf(DBG_CHN_MESG,"s");
1099 break;
1100 case LONG:
1101 DEBUG_Printf(DBG_CHN_MESG,"l");
1102 break;
1103 case QUAD:
1104 DEBUG_Printf(DBG_CHN_MESG,"q");
1105 break;
1106 default:
1107 break;
1108 }
1109 DEBUG_Printf(DBG_CHN_MESG,"\t");
1110 db_print_address(seg, BYTE, &address, 0);
1111 }
1112 else {
1113 /*
1114 * 'reg-reg' - special formats
1115 */
1116 switch (fp->f_rrmode) {
1117 case op2(ST,STI):
1118 name = (fp->f_rrname) ? fp->f_rrname : fp->f_name;
1119 DEBUG_Printf(DBG_CHN_MESG,"%s\t%%st,%%st(%d)",name,f_rm(regmodrm));
1120 break;
1121 case op2(STI,ST):
1122 name = (fp->f_rrname) ? fp->f_rrname : fp->f_name;
1123 DEBUG_Printf(DBG_CHN_MESG,"%s\t%%st(%d),%%st",name, f_rm(regmodrm));
1124 break;
1125 case op1(STI):
1126 name = (fp->f_rrname) ? fp->f_rrname : fp->f_name;
1127 DEBUG_Printf(DBG_CHN_MESG,"%s\t%%st(%d)",name, f_rm(regmodrm));
1128 break;
1129 case op1(X):
1130 DEBUG_Printf(DBG_CHN_MESG,"%s", ((char **)fp->f_rrname)[f_rm(regmodrm)]);
1131 break;
1132 case op1(XA):
1133 DEBUG_Printf(DBG_CHN_MESG,"%s\t%%ax",
1134 ((char **)fp->f_rrname)[f_rm(regmodrm)]);
1135 break;
1136 default:
1137 DEBUG_Printf(DBG_CHN_MESG,"<bad instruction>");
1138 break;
1139 }
1140 }
1141 }
1142
1143
1144 /***********************************************************************
1145 * DEBUG_Disasm
1146 *
1147 * Disassemble instruction at 'addr'. addr is changed to point to the
1148 * start of the next instruction.
1149 */
1150 void DEBUG_Disasm( DBG_ADDR *addr, int display )
1151 {
1152 int inst;
1153 int size;
1154 int short_addr;
1155 char * seg;
1156 const struct inst *ip;
1157 const char *i_name;
1158 int i_size;
1159 int i_mode;
1160 int regmodrm = 0;
1161 BOOL first;
1162 int displ;
1163 int prefix;
1164 int imm;
1165 int len;
1166 struct i_addr address;
1167
1168 /*
1169 * Set this so we get can supress the printout if we need to.
1170 */
1171 db_display = display;
1172 switch (DEBUG_GetSelectorType(addr->seg)) {
1173 case 16: db_disasm_16 = 1; break;
1174 case 32: db_disasm_16 = 0; break;
1175 default: DEBUG_Printf(DBG_CHN_MESG, "Bad selector %ld\n", addr->seg); return;
1176 }
1177
1178 get_value_inc( inst, addr, 1, FALSE );
1179
1180 if (db_disasm_16) {
1181 short_addr = TRUE;
1182 size = WORD;
1183 }
1184 else {
1185 short_addr = FALSE;
1186 size = LONG;
1187 }
1188 seg = 0;
1189
1190 /*
1191 * Get prefixes
1192 */
1193 prefix = TRUE;
1194 do {
1195 switch (inst) {
1196 case 0x66: /* data16 */
1197 if (size == LONG)
1198 size = WORD;
1199 else
1200 size = LONG;
1201 break;
1202 case 0x67:
1203 short_addr = !short_addr;
1204 break;
1205 case 0x26:
1206 seg = "%es";
1207 break;
1208 case 0x36:
1209 seg = "%ss";
1210 break;
1211 case 0x2e:
1212 seg = "%cs";
1213 break;
1214 case 0x3e:
1215 seg = "%ds";
1216 break;
1217 case 0x64:
1218 seg = "%fs";
1219 break;
1220 case 0x65:
1221 seg = "%gs";
1222 break;
1223 case 0xf0:
1224 if( db_display )
1225 DEBUG_Printf(DBG_CHN_MESG,"lock ");
1226 break;
1227 case 0xf2:
1228 if( db_display )
1229 DEBUG_Printf(DBG_CHN_MESG,"repne ");
1230 break;
1231 case 0xf3:
1232 if( db_display )
1233 DEBUG_Printf(DBG_CHN_MESG,"repe "); /* XXX repe VS rep */
1234 break;
1235 default:
1236 prefix = FALSE;
1237 break;
1238 }
1239 if (prefix) {
1240 get_value_inc(inst, addr, 1, FALSE);
1241 }
1242 } while (prefix);
1243
1244 if (inst >= 0xd8 && inst <= 0xdf)
1245 {
1246 db_disasm_esc( addr, inst, short_addr, size, seg);
1247 return;
1248 }
1249
1250 if (inst == 0x0f) {
1251 get_value_inc(inst, addr, 1, FALSE);
1252 ip = db_inst_0f[inst>>4];
1253 if (ip == 0) {
1254 ip = &db_bad_inst;
1255 }
1256 else {
1257 ip = &ip[inst&0xf];
1258 }
1259 }
1260 else
1261 ip = &db_inst_table[inst];
1262
1263 if (ip->i_has_modrm) {
1264 get_value_inc(regmodrm, addr, 1, FALSE);
1265 db_read_address( addr, short_addr, regmodrm, &address);
1266 }
1267
1268 i_name = ip->i_name;
1269 i_size = ip->i_size;
1270 i_mode = ip->i_mode;
1271
1272 if (ip->i_extra == (char *)db_Grp1 ||
1273 ip->i_extra == (char *)db_Grp2 ||
1274 ip->i_extra == (char *)db_Grp6 ||
1275 ip->i_extra == (char *)db_Grp7 ||
1276 ip->i_extra == (char *)db_Grp8) {
1277 i_name = ((char **)ip->i_extra)[f_reg(regmodrm)];
1278 }
1279 else if (ip->i_extra == (char *)db_Grp3) {
1280 ip = (struct inst *)ip->i_extra;
1281 ip = &ip[f_reg(regmodrm)];
1282 i_name = ip->i_name;
1283 i_mode = ip->i_mode;
1284 }
1285 else if (ip->i_extra == (char *)db_Grp4 ||
1286 ip->i_extra == (char *)db_Grp5) {
1287 ip = (struct inst *)ip->i_extra;
1288 ip = &ip[f_reg(regmodrm)];
1289 i_name = ip->i_name;
1290 i_mode = ip->i_mode;
1291 i_size = ip->i_size;
1292 }
1293
1294 if (i_size == SDEP) {
1295 if( db_display )
1296 {
1297 if (size == WORD)
1298 DEBUG_Printf(DBG_CHN_MESG,i_name);
1299 else
1300 DEBUG_Printf(DBG_CHN_MESG,ip->i_extra);
1301 }
1302 }
1303 else {
1304 if( db_display )
1305 {
1306 DEBUG_Printf(DBG_CHN_MESG,i_name);
1307 }
1308 if (i_size != NONE) {
1309 if (i_size == BYTE) {
1310 if( db_display )
1311 {
1312 DEBUG_Printf(DBG_CHN_MESG,"b");
1313 }
1314 size = BYTE;
1315 }
1316 else if (i_size == WORD) {
1317 if( db_display )
1318 {
1319 DEBUG_Printf(DBG_CHN_MESG,"w");
1320 }
1321 size = WORD;
1322 }
1323 else if (size == WORD)
1324 {
1325 if( db_display )
1326 {
1327 DEBUG_Printf(DBG_CHN_MESG,"w");
1328 }
1329 }
1330 else
1331 {
1332 if( db_display )
1333 {
1334 DEBUG_Printf(DBG_CHN_MESG,"l");
1335 }
1336 }
1337 }
1338 }
1339 if( db_display )
1340 {
1341 DEBUG_Printf(DBG_CHN_MESG,"\t");
1342 }
1343 for (first = TRUE;
1344 i_mode != 0;
1345 i_mode >>= 8, first = FALSE)
1346 {
1347 if (!first && db_display)
1348 DEBUG_Printf(DBG_CHN_MESG,",");
1349
1350 switch (i_mode & 0xFF) {
1351
1352 case E:
1353 if( db_display )
1354 {
1355 db_print_address(seg, size, &address, 0);
1356 }
1357 break;
1358
1359 case Eind:
1360 if( db_display )
1361 {
1362 DEBUG_Printf(DBG_CHN_MESG,"*");
1363 db_print_address(seg, size, &address, 1);
1364 }
1365 break;
1366
1367 case Ew:
1368 if( db_display )
1369 {
1370 db_print_address(seg, WORD, &address, 0);
1371 }
1372 break;
1373
1374 case Eb:
1375 if( db_display )
1376 {
1377 db_print_address(seg, BYTE, &address, 0);
1378 }
1379 break;
1380
1381 case R:
1382 if( db_display )
1383 {
1384 DEBUG_Printf(DBG_CHN_MESG,"%s", db_reg[size][f_reg(regmodrm)]);
1385 }
1386 break;
1387
1388 case Rw:
1389 if( db_display )
1390 {
1391 DEBUG_Printf(DBG_CHN_MESG,"%s", db_reg[WORD][f_reg(regmodrm)]);
1392 }
1393 break;
1394
1395 case Ri:
1396 if( db_display )
1397 {
1398 DEBUG_Printf(DBG_CHN_MESG,"%s", db_reg[size][f_rm(inst)]);
1399 }
1400 break;
1401
1402 case S:
1403 if( db_display )
1404 {
1405 DEBUG_Printf(DBG_CHN_MESG,"%s", db_seg_reg[f_reg(regmodrm)]);
1406 }
1407 break;
1408
1409 case Si:
1410 if( db_display )
1411 {
1412 DEBUG_Printf(DBG_CHN_MESG,"%s", db_seg_reg[f_reg(inst)]);
1413 }
1414 break;
1415
1416 case A:
1417 if( db_display )
1418 {
1419 DEBUG_Printf(DBG_CHN_MESG,"%s", db_reg[size][0]); /* acc */
1420 }
1421 break;
1422
1423 case BX:
1424 if( db_display )
1425 {
1426 if (seg)
1427 DEBUG_Printf(DBG_CHN_MESG,"%s:", seg);
1428 DEBUG_Printf(DBG_CHN_MESG,"(%s)", short_addr ? "%bx" : "%ebx");
1429 }
1430 break;
1431
1432 case CL:
1433 if( db_display )
1434 {
1435 DEBUG_Printf(DBG_CHN_MESG,"%%cl");
1436 }
1437 break;
1438
1439 case DX:
1440 if( db_display )
1441 {
1442 DEBUG_Printf(DBG_CHN_MESG,"%%dx");
1443 }
1444 break;
1445
1446 case SI:
1447 if( db_display )
1448 {
1449 if (seg)
1450 DEBUG_Printf(DBG_CHN_MESG,"%s:", seg);
1451 DEBUG_Printf(DBG_CHN_MESG,"(%s)", short_addr ? "%si" : "%esi");
1452 }
1453 break;
1454
1455 case DI:
1456 if( db_display )
1457 {
1458 DEBUG_Printf(DBG_CHN_MESG,"%%es:(%s)", short_addr ? "%di" : "%edi");
1459 }
1460 break;
1461
1462 case CR:
1463 if( db_display )
1464 {
1465 DEBUG_Printf(DBG_CHN_MESG,"%%cr%d", f_reg(regmodrm));
1466 }
1467 break;
1468
1469 case DR:
1470 if( db_display )
1471 {
1472 DEBUG_Printf(DBG_CHN_MESG,"%%dr%d", f_reg(regmodrm));
1473 }
1474 break;
1475
1476 case TR:
1477 if( db_display )
1478 {
1479 DEBUG_Printf(DBG_CHN_MESG,"%%tr%d", f_reg(regmodrm));
1480 }
1481 break;
1482
1483 case I:
1484 len = db_lengths[size];
1485 get_value_inc(imm, addr, len, FALSE);/* unsigned */
1486 if( db_display )
1487 {
1488 DEBUG_Printf(DBG_CHN_MESG,"$0x%x", imm);
1489 }
1490 break;
1491
1492 case Is:
1493 len = db_lengths[size];
1494 get_value_inc(imm, addr, len, TRUE); /* signed */
1495 if( db_display )
1496 {
1497 DEBUG_Printf(DBG_CHN_MESG,"$%d", imm);
1498 }
1499 break;
1500
1501 case Ib:
1502 get_value_inc(imm, addr, 1, FALSE); /* unsigned */
1503 if( db_display )
1504 {
1505 DEBUG_Printf(DBG_CHN_MESG,"$0x%x", imm);
1506 }
1507 break;
1508
1509 case Ibs:
1510 get_value_inc(imm, addr, 1, TRUE); /* signed */
1511 if( db_display )
1512 {
1513 DEBUG_Printf(DBG_CHN_MESG,"$%d", imm);
1514 }
1515 break;
1516
1517 case Iw:
1518 get_value_inc(imm, addr, 2, FALSE); /* unsigned */
1519 if( db_display )
1520 {
1521 DEBUG_Printf(DBG_CHN_MESG,"$0x%x", imm);
1522 }
1523 break;
1524
1525 case Il:
1526 get_value_inc(imm, addr, 4, FALSE);
1527 if( db_display )
1528 {
1529 DEBUG_Printf(DBG_CHN_MESG,"$0x%x", imm);
1530 }
1531 break;
1532
1533 case O:
1534 if (short_addr) {
1535 get_value_inc(displ, addr, 2, TRUE);
1536 }
1537 else {
1538 get_value_inc(displ, addr, 4, TRUE);
1539 }
1540 if( !db_display )
1541 {
1542 break;
1543 }
1544
1545 if (seg)
1546 DEBUG_Printf(DBG_CHN_MESG,"%s:0x%x",seg, displ);
1547 else
1548 db_task_printsym(displ, short_addr ? WORD : LONG);
1549 break;
1550
1551 case Db:
1552 get_value_inc(displ, addr, 1, TRUE);
1553 if( !db_display )
1554 {
1555 break;
1556 }
1557
1558 if (size == WORD) {
1559 /* offset only affects low 16 bits */
1560 displ = (addr->off & 0xffff0000)
1561 | ((addr->off + displ) & 0xffff);
1562 }
1563 else displ += addr->off;
1564 db_task_printsym(displ, size);
1565 break;
1566
1567 case Dl:
1568 if (size == WORD) {
1569 get_value_inc(displ, addr, 2, TRUE);
1570 /* offset only affects low 16 bits */
1571 displ = (addr->off & 0xffff0000)
1572 | ((addr->off + displ) & 0xffff);
1573 }
1574 else {
1575 get_value_inc(displ, addr, 4, TRUE);
1576 displ += addr->off;
1577 }
1578 if( !db_display )
1579 {
1580 break;
1581 }
1582 db_task_printsym( displ, size );
1583 break;
1584
1585 case o1:
1586 if( db_display )
1587 {
1588 DEBUG_Printf(DBG_CHN_MESG,"$1");
1589 }
1590 break;
1591
1592 case o3:
1593 if( db_display )
1594 {
1595 DEBUG_Printf(DBG_CHN_MESG,"$3");
1596 }
1597 break;
1598
1599 case OS:
1600 {
1601 DBG_ADDR address;
1602 get_value_inc( address.off, addr, /* offset */
1603 short_addr ? 2 : 4, FALSE );
1604 get_value_inc( address.seg, addr, /* segment */
1605 2, FALSE );
1606 if( db_display )
1607 {
1608 DEBUG_PrintAddress( &address, short_addr ? 16 : 32,
1609 TRUE );
1610 }
1611
1612 }
1613 break;
1614 }
1615 }
1616 }
1617
1618 #else /* __i386__ */
1619
1620 void DEBUG_Disasm( DBG_ADDR *addr, int display )
1621 {
1622 }
1623
1624 #endif /* __i386__ */
1625
Windows API implementation