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- implemented serial numbers for audio CDs and data CDs
[wine.git] / debugger / db_disasm.c
blob42cf385479f3005604a78b2b129e440de031e77c
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 <stdio.h>
66 #include "debugger.h"
67
68 #ifdef __i386__
69
70 /*
71 * Switch to disassemble 16-bit code.
72 */
73 static BOOL db_disasm_16 = FALSE;
74
75 /*
76 * Flag to indicate whether we need to display instruction,
77 * or whether we just need to know the address of the next
78 * instruction.
79 */
80 static BOOL db_display = FALSE;
81
82 /*
83 * Size attributes
84 */
85 #define BYTE 0
86 #define WORD 1
87 #define LONG 2
88 #define QUAD 3
89 #define SNGL 4
90 #define DBLR 5
91 #define EXTR 6
92 #define SDEP 7
93 #define NONE 8
94
95 /*
96 * Addressing modes
97 */
98 #define E 1 /* general effective address */
99 #define Eind 2 /* indirect address (jump, call) */
100 #define Ew 3 /* address, word size */
101 #define Eb 4 /* address, byte size */
102 #define R 5 /* register, in 'reg' field */
103 #define Rw 6 /* word register, in 'reg' field */
104 #define Ri 7 /* register in instruction */
105 #define S 8 /* segment reg, in 'reg' field */
106 #define Si 9 /* segment reg, in instruction */
107 #define A 10 /* accumulator */
108 #define BX 11 /* (bx) */
109 #define CL 12 /* cl, for shifts */
110 #define DX 13 /* dx, for IO */
111 #define SI 14 /* si */
112 #define DI 15 /* di */
113 #define CR 16 /* control register */
114 #define DR 17 /* debug register */
115 #define TR 18 /* test register */
116 #define I 19 /* immediate, unsigned */
117 #define Is 20 /* immediate, signed */
118 #define Ib 21 /* byte immediate, unsigned */
119 #define Ibs 22 /* byte immediate, signed */
120 #define Iw 23 /* word immediate, unsigned */
121 #define Il 24 /* long immediate */
122 #define O 25 /* direct address */
123 #define Db 26 /* byte displacement from EIP */
124 #define Dl 27 /* long displacement from EIP */
125 #define o1 28 /* constant 1 */
126 #define o3 29 /* constant 3 */
127 #define OS 30 /* immediate offset/segment */
128 #define ST 31 /* FP stack top */
129 #define STI 32 /* FP stack */
130 #define X 33 /* extended FP op */
131 #define XA 34 /* for 'fstcw %ax' */
132
133 struct inst {
134 const char *i_name; /* name */
135 short i_has_modrm; /* has regmodrm byte */
136 short i_size; /* operand size */
137 int i_mode; /* addressing modes */
138 const char *i_extra; /* pointer to extra opcode table */
139 };
140
141 #define op1(x) (x)
142 #define op2(x,y) ((x)|((y)<<8))
143 #define op3(x,y,z) ((x)|((y)<<8)|((z)<<16))
144
145 struct finst {
146 const char *f_name; /* name for memory instruction */
147 int f_size; /* size for memory instruction */
148 int f_rrmode; /* mode for rr instruction */
149 const char *f_rrname; /* name for rr instruction
150 (or pointer to table) */
151 };
152
153 static const char * const db_Grp6[] = {
154 "sldt",
155 "str",
156 "lldt",
157 "ltr",
158 "verr",
159 "verw",
160 "",
161 ""
162 };
163
164 static const char * const db_Grp7[] = {
165 "sgdt",
166 "sidt",
167 "lgdt",
168 "lidt",
169 "smsw",
170 "",
171 "lmsw",
172 "invlpg"
173 };
174
175 static const char * const db_Grp8[] = {
176 "",
177 "",
178 "",
179 "",
180 "bt",
181 "bts",
182 "btr",
183 "btc"
184 };
185
186 static const struct inst db_inst_0f0x[] = {
187 /*00*/ { "", TRUE, NONE, op1(Ew), (char *)db_Grp6 },
188 /*01*/ { "", TRUE, NONE, op1(Ew), (char *)db_Grp7 },
189 /*02*/ { "lar", TRUE, LONG, op2(E,R), 0 },
190 /*03*/ { "lsl", TRUE, LONG, op2(E,R), 0 },
191 /*04*/ { "", FALSE, NONE, 0, 0 },
192 /*05*/ { "", FALSE, NONE, 0, 0 },
193 /*06*/ { "clts", FALSE, NONE, 0, 0 },
194 /*07*/ { "", FALSE, NONE, 0, 0 },
195
196 /*08*/ { "invd", FALSE, NONE, 0, 0 },
197 /*09*/ { "wbinvd",FALSE, NONE, 0, 0 },
198 /*0a*/ { "", FALSE, NONE, 0, 0 },
199 /*0b*/ { "", FALSE, NONE, 0, 0 },
200 /*0c*/ { "", FALSE, NONE, 0, 0 },
201 /*0d*/ { "", FALSE, NONE, 0, 0 },
202 /*0e*/ { "", FALSE, NONE, 0, 0 },
203 /*0f*/ { "", FALSE, NONE, 0, 0 },
204 };
205
206 static const struct inst db_inst_0f2x[] = {
207 /*20*/ { "mov", TRUE, LONG, op2(CR,E), 0 }, /* use E for reg */
208 /*21*/ { "mov", TRUE, LONG, op2(DR,E), 0 }, /* since mod == 11 */
209 /*22*/ { "mov", TRUE, LONG, op2(E,CR), 0 },
210 /*23*/ { "mov", TRUE, LONG, op2(E,DR), 0 },
211 /*24*/ { "mov", TRUE, LONG, op2(TR,E), 0 },
212 /*25*/ { "", FALSE, NONE, 0, 0 },
213 /*26*/ { "mov", TRUE, LONG, op2(E,TR), 0 },
214 /*27*/ { "", FALSE, NONE, 0, 0 },
215
216 /*28*/ { "", FALSE, NONE, 0, 0 },
217 /*29*/ { "", FALSE, NONE, 0, 0 },
218 /*2a*/ { "", FALSE, NONE, 0, 0 },
219 /*2b*/ { "", FALSE, NONE, 0, 0 },
220 /*2c*/ { "", FALSE, NONE, 0, 0 },
221 /*2d*/ { "", FALSE, NONE, 0, 0 },
222 /*2e*/ { "", FALSE, NONE, 0, 0 },
223 /*2f*/ { "", FALSE, NONE, 0, 0 },
224 };
225
226 static const struct inst db_inst_0f8x[] = {
227 /*80*/ { "jo", FALSE, NONE, op1(Dl), 0 },
228 /*81*/ { "jno", FALSE, NONE, op1(Dl), 0 },
229 /*82*/ { "jb", FALSE, NONE, op1(Dl), 0 },
230 /*83*/ { "jnb", FALSE, NONE, op1(Dl), 0 },
231 /*84*/ { "jz", FALSE, NONE, op1(Dl), 0 },
232 /*85*/ { "jnz", FALSE, NONE, op1(Dl), 0 },
233 /*86*/ { "jbe", FALSE, NONE, op1(Dl), 0 },
234 /*87*/ { "jnbe", FALSE, NONE, op1(Dl), 0 },
235
236 /*88*/ { "js", FALSE, NONE, op1(Dl), 0 },
237 /*89*/ { "jns", FALSE, NONE, op1(Dl), 0 },
238 /*8a*/ { "jp", FALSE, NONE, op1(Dl), 0 },
239 /*8b*/ { "jnp", FALSE, NONE, op1(Dl), 0 },
240 /*8c*/ { "jl", FALSE, NONE, op1(Dl), 0 },
241 /*8d*/ { "jnl", FALSE, NONE, op1(Dl), 0 },
242 /*8e*/ { "jle", FALSE, NONE, op1(Dl), 0 },
243 /*8f*/ { "jnle", FALSE, NONE, op1(Dl), 0 },
244 };
245
246 static const struct inst db_inst_0f9x[] = {
247 /*90*/ { "seto", TRUE, NONE, op1(Eb), 0 },
248 /*91*/ { "setno", TRUE, NONE, op1(Eb), 0 },
249 /*92*/ { "setb", TRUE, NONE, op1(Eb), 0 },
250 /*93*/ { "setnb", TRUE, NONE, op1(Eb), 0 },
251 /*94*/ { "setz", TRUE, NONE, op1(Eb), 0 },
252 /*95*/ { "setnz", TRUE, NONE, op1(Eb), 0 },
253 /*96*/ { "setbe", TRUE, NONE, op1(Eb), 0 },
254 /*97*/ { "setnbe",TRUE, NONE, op1(Eb), 0 },
255
256 /*98*/ { "sets", TRUE, NONE, op1(Eb), 0 },
257 /*99*/ { "setns", TRUE, NONE, op1(Eb), 0 },
258 /*9a*/ { "setp", TRUE, NONE, op1(Eb), 0 },
259 /*9b*/ { "setnp", TRUE, NONE, op1(Eb), 0 },
260 /*9c*/ { "setl", TRUE, NONE, op1(Eb), 0 },
261 /*9d*/ { "setnl", TRUE, NONE, op1(Eb), 0 },
262 /*9e*/ { "setle", TRUE, NONE, op1(Eb), 0 },
263 /*9f*/ { "setnle",TRUE, NONE, op1(Eb), 0 },
264 };
265
266 static const struct inst db_inst_0fax[] = {
267 /*a0*/ { "push", FALSE, NONE, op1(Si), 0 },
268 /*a1*/ { "pop", FALSE, NONE, op1(Si), 0 },
269 /*a2*/ { "cpuid", FALSE, NONE, 0, 0 },
270 /*a3*/ { "bt", TRUE, LONG, op2(E,R), 0 },
271 /*a4*/ { "shld", TRUE, LONG, op3(Ib,E,R), 0 },
272 /*a5*/ { "shld", TRUE, LONG, op3(CL,E,R), 0 },
273 /*a6*/ { "", FALSE, NONE, 0, 0 },
274 /*a7*/ { "", FALSE, NONE, 0, 0 },
275
276 /*a8*/ { "push", FALSE, NONE, op1(Si), 0 },
277 /*a9*/ { "pop", FALSE, NONE, op1(Si), 0 },
278 /*aa*/ { "", FALSE, NONE, 0, 0 },
279 /*ab*/ { "bts", TRUE, LONG, op2(E,R), 0 },
280 /*ac*/ { "shrd", TRUE, LONG, op3(Ib,E,R), 0 },
281 /*ad*/ { "shrd", TRUE, LONG, op3(CL,E,R), 0 },
282 /*a6*/ { "", FALSE, NONE, 0, 0 },
283 /*a7*/ { "imul", TRUE, LONG, op2(E,R), 0 },
284 };
285
286 static const struct inst db_inst_0fbx[] = {
287 /*b0*/ { "cmpxchg",TRUE, BYTE, op2(E, R), 0 },
288 /*b1*/ { "cmpxchg",TRUE, LONG, op2(E, R), 0 },
289 /*b2*/ { "lss", TRUE, LONG, op2(E, R), 0 },
290 /*b3*/ { "bts", TRUE, LONG, op2(R, E), 0 },
291 /*b4*/ { "lfs", TRUE, LONG, op2(E, R), 0 },
292 /*b5*/ { "lgs", TRUE, LONG, op2(E, R), 0 },
293 /*b6*/ { "movzb", TRUE, LONG, op2(E, R), 0 },
294 /*b7*/ { "movzw", TRUE, LONG, op2(E, R), 0 },
295
296 /*b8*/ { "", FALSE, NONE, 0, 0 },
297 /*b9*/ { "", FALSE, NONE, 0, 0 },
298 /*ba*/ { "", TRUE, LONG, op2(Ib, E), (char *)db_Grp8 },
299 /*bb*/ { "btc", TRUE, LONG, op2(R, E), 0 },
300 /*bc*/ { "bsf", TRUE, LONG, op2(E, R), 0 },
301 /*bd*/ { "bsr", TRUE, LONG, op2(E, R), 0 },
302 /*be*/ { "movsb", TRUE, LONG, op2(E, R), 0 },
303 /*bf*/ { "movsw", TRUE, LONG, op2(E, R), 0 },
304 };
305
306 static const struct inst db_inst_0fcx[] = {
307 /*c0*/ { "xadd", TRUE, BYTE, op2(R, E), 0 },
308 /*c1*/ { "xadd", TRUE, LONG, op2(R, E), 0 },
309 /*c2*/ { "", FALSE, NONE, 0, 0 },
310 /*c3*/ { "", FALSE, NONE, 0, 0 },
311 /*c4*/ { "", FALSE, NONE, 0, 0 },
312 /*c5*/ { "", FALSE, NONE, 0, 0 },
313 /*c6*/ { "", FALSE, NONE, 0, 0 },
314 /*c7*/ { "", FALSE, NONE, 0, 0 },
315 /*c8*/ { "bswap", FALSE, LONG, op1(Ri), 0 },
316 /*c9*/ { "bswap", FALSE, LONG, op1(Ri), 0 },
317 /*ca*/ { "bswap", FALSE, LONG, op1(Ri), 0 },
318 /*cb*/ { "bswap", FALSE, LONG, op1(Ri), 0 },
319 /*cc*/ { "bswap", FALSE, LONG, op1(Ri), 0 },
320 /*cd*/ { "bswap", FALSE, LONG, op1(Ri), 0 },
321 /*ce*/ { "bswap", FALSE, LONG, op1(Ri), 0 },
322 /*cf*/ { "bswap", FALSE, LONG, op1(Ri), 0 },
323 };
324
325 static const struct inst db_inst_0fdx[] = {
326 /*c0*/ { "cmpxchg",TRUE, BYTE, op2(R, E), 0 },
327 /*c1*/ { "cmpxchg",TRUE, LONG, op2(R, E), 0 },
328 /*c2*/ { "", FALSE, NONE, 0, 0 },
329 /*c3*/ { "", FALSE, NONE, 0, 0 },
330 /*c4*/ { "", FALSE, NONE, 0, 0 },
331 /*c5*/ { "", FALSE, NONE, 0, 0 },
332 /*c6*/ { "", FALSE, NONE, 0, 0 },
333 /*c7*/ { "", FALSE, NONE, 0, 0 },
334 /*c8*/ { "", FALSE, NONE, 0, 0 },
335 /*c9*/ { "", FALSE, NONE, 0, 0 },
336 /*ca*/ { "", FALSE, NONE, 0, 0 },
337 /*cb*/ { "", FALSE, NONE, 0, 0 },
338 /*cc*/ { "", FALSE, NONE, 0, 0 },
339 /*cd*/ { "", FALSE, NONE, 0, 0 },
340 /*ce*/ { "", FALSE, NONE, 0, 0 },
341 /*cf*/ { "", FALSE, NONE, 0, 0 },
342 };
343
344 static const struct inst * const db_inst_0f[] = {
345 db_inst_0f0x,
346 0,
347 db_inst_0f2x,
348 0,
349 0,
350 0,
351 0,
352 0,
353 db_inst_0f8x,
354 db_inst_0f9x,
355 db_inst_0fax,
356 db_inst_0fbx,
357 db_inst_0fcx,
358 db_inst_0fdx,
359 0,
360 0
361 };
362
363 static const char * const db_Esc92[] = {
364 "fnop", "", "", "", "", "", "", ""
365 };
366 static const char * const db_Esc93[] = {
367 "", "", "", "", "", "", "", ""
368 };
369 static const char * const db_Esc94[] = {
370 "fchs", "fabs", "", "", "ftst", "fxam", "", ""
371 };
372 static const char * const db_Esc95[] = {
373 "fld1", "fldl2t","fldl2e","fldpi","fldlg2","fldln2","fldz",""
374 };
375 static const char * const db_Esc96[] = {
376 "f2xm1","fyl2x","fptan","fpatan","fxtract","fprem1","fdecstp",
377 "fincstp"
378 };
379 static const char * const db_Esc97[] = {
380 "fprem","fyl2xp1","fsqrt","fsincos","frndint","fscale","fsin","fcos"
381 };
382
383 static const char * const db_Esca4[] = {
384 "", "fucompp","", "", "", "", "", ""
385 };
386
387 static const char * const db_Escb4[] = {
388 "", "", "fnclex","fninit","", "", "", ""
389 };
390
391 static const char * const db_Esce3[] = {
392 "", "fcompp","", "", "", "", "", ""
393 };
394
395 static const char * const db_Escf4[] = {
396 "fnstsw","", "", "", "", "", "", ""
397 };
398
399 static const struct finst db_Esc8[] = {
400 /*0*/ { "fadd", SNGL, op2(STI,ST), 0 },
401 /*1*/ { "fmul", SNGL, op2(STI,ST), 0 },
402 /*2*/ { "fcom", SNGL, op2(STI,ST), 0 },
403 /*3*/ { "fcomp", SNGL, op2(STI,ST), 0 },
404 /*4*/ { "fsub", SNGL, op2(STI,ST), 0 },
405 /*5*/ { "fsubr", SNGL, op2(STI,ST), 0 },
406 /*6*/ { "fdiv", SNGL, op2(STI,ST), 0 },
407 /*7*/ { "fdivr", SNGL, op2(STI,ST), 0 },
408 };
409
410 static const struct finst db_Esc9[] = {
411 /*0*/ { "fld", SNGL, op1(STI), 0 },
412 /*1*/ { "", NONE, op1(STI), "fxch" },
413 /*2*/ { "fst", SNGL, op1(X), (char *)db_Esc92 },
414 /*3*/ { "fstp", SNGL, op1(X), (char *)db_Esc93 },
415 /*4*/ { "fldenv", NONE, op1(X), (char *)db_Esc94 },
416 /*5*/ { "fldcw", NONE, op1(X), (char *)db_Esc95 },
417 /*6*/ { "fnstenv",NONE, op1(X), (char *)db_Esc96 },
418 /*7*/ { "fnstcw", NONE, op1(X), (char *)db_Esc97 },
419 };
420
421 static const struct finst db_Esca[] = {
422 /*0*/ { "fiadd", WORD, 0, 0 },
423 /*1*/ { "fimul", WORD, 0, 0 },
424 /*2*/ { "ficom", WORD, 0, 0 },
425 /*3*/ { "ficomp", WORD, 0, 0 },
426 /*4*/ { "fisub", WORD, op1(X), (char *)db_Esca4 },
427 /*5*/ { "fisubr", WORD, 0, 0 },
428 /*6*/ { "fidiv", WORD, 0, 0 },
429 /*7*/ { "fidivr", WORD, 0, 0 }
430 };
431
432 static const struct finst db_Escb[] = {
433 /*0*/ { "fild", WORD, 0, 0 },
434 /*1*/ { "", NONE, 0, 0 },
435 /*2*/ { "fist", WORD, 0, 0 },
436 /*3*/ { "fistp", WORD, 0, 0 },
437 /*4*/ { "", WORD, op1(X), (char *)db_Escb4 },
438 /*5*/ { "fld", EXTR, 0, 0 },
439 /*6*/ { "", WORD, 0, 0 },
440 /*7*/ { "fstp", EXTR, 0, 0 },
441 };
442
443 static const struct finst db_Escc[] = {
444 /*0*/ { "fadd", DBLR, op2(ST,STI), 0 },
445 /*1*/ { "fmul", DBLR, op2(ST,STI), 0 },
446 /*2*/ { "fcom", DBLR, op2(ST,STI), 0 },
447 /*3*/ { "fcomp", DBLR, op2(ST,STI), 0 },
448 /*4*/ { "fsub", DBLR, op2(ST,STI), "fsubr" },
449 /*5*/ { "fsubr", DBLR, op2(ST,STI), "fsub" },
450 /*6*/ { "fdiv", DBLR, op2(ST,STI), "fdivr" },
451 /*7*/ { "fdivr", DBLR, op2(ST,STI), "fdiv" },
452 };
453
454 static const struct finst db_Escd[] = {
455 /*0*/ { "fld", DBLR, op1(STI), "ffree" },
456 /*1*/ { "", NONE, 0, 0 },
457 /*2*/ { "fst", DBLR, op1(STI), 0 },
458 /*3*/ { "fstp", DBLR, op1(STI), 0 },
459 /*4*/ { "frstor", NONE, op1(STI), "fucom" },
460 /*5*/ { "", NONE, op1(STI), "fucomp" },
461 /*6*/ { "fnsave", NONE, 0, 0 },
462 /*7*/ { "fnstsw", NONE, 0, 0 },
463 };
464
465 static const struct finst db_Esce[] = {
466 /*0*/ { "fiadd", LONG, op2(ST,STI), "faddp" },
467 /*1*/ { "fimul", LONG, op2(ST,STI), "fmulp" },
468 /*2*/ { "ficom", LONG, 0, 0 },
469 /*3*/ { "ficomp", LONG, op1(X), (char *)db_Esce3 },
470 /*4*/ { "fisub", LONG, op2(ST,STI), "fsubrp" },
471 /*5*/ { "fisubr", LONG, op2(ST,STI), "fsubp" },
472 /*6*/ { "fidiv", LONG, op2(ST,STI), "fdivrp" },
473 /*7*/ { "fidivr", LONG, op2(ST,STI), "fdivp" },
474 };
475
476 static const struct finst db_Escf[] = {
477 /*0*/ { "fild", LONG, 0, 0 },
478 /*1*/ { "", LONG, 0, 0 },
479 /*2*/ { "fist", LONG, 0, 0 },
480 /*3*/ { "fistp", LONG, 0, 0 },
481 /*4*/ { "fbld", NONE, op1(XA), (char *)db_Escf4 },
482 /*5*/ { "fld", QUAD, 0, 0 },
483 /*6*/ { "fbstp", NONE, 0, 0 },
484 /*7*/ { "fstp", QUAD, 0, 0 },
485 };
486
487 static const struct finst * const db_Esc_inst[] = {
488 db_Esc8, db_Esc9, db_Esca, db_Escb,
489 db_Escc, db_Escd, db_Esce, db_Escf
490 };
491
492 static const char * const db_Grp1[] = {
493 "add",
494 "or",
495 "adc",
496 "sbb",
497 "and",
498 "sub",
499 "xor",
500 "cmp"
501 };
502
503 static const char * const db_Grp2[] = {
504 "rol",
505 "ror",
506 "rcl",
507 "rcr",
508 "shl",
509 "shr",
510 "shl",
511 "sar"
512 };
513
514 static const struct inst db_Grp3[] = {
515 { "test", TRUE, NONE, op2(I,E), 0 },
516 { "test", TRUE, NONE, op2(I,E), 0 },
517 { "not", TRUE, NONE, op1(E), 0 },
518 { "neg", TRUE, NONE, op1(E), 0 },
519 { "mul", TRUE, NONE, op2(E,A), 0 },
520 { "imul", TRUE, NONE, op2(E,A), 0 },
521 { "div", TRUE, NONE, op2(E,A), 0 },
522 { "idiv", TRUE, NONE, op2(E,A), 0 },
523 };
524
525 static const struct inst db_Grp4[] = {
526 { "inc", TRUE, BYTE, op1(E), 0 },
527 { "dec", TRUE, BYTE, op1(E), 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 { "", TRUE, NONE, 0, 0 }
534 };
535
536 static const struct inst db_Grp5[] = {
537 { "inc", TRUE, LONG, op1(E), 0 },
538 { "dec", TRUE, LONG, op1(E), 0 },
539 { "call", TRUE, NONE, op1(Eind),0 },
540 { "lcall", TRUE, NONE, op1(Eind),0 },
541 { "jmp", TRUE, NONE, op1(Eind),0 },
542 { "ljmp", TRUE, NONE, op1(Eind),0 },
543 { "push", TRUE, LONG, op1(E), 0 },
544 { "", TRUE, NONE, 0, 0 }
545 };
546
547 static const struct inst db_inst_table[256] = {
548 /*00*/ { "add", TRUE, BYTE, op2(R, E), 0 },
549 /*01*/ { "add", TRUE, LONG, op2(R, E), 0 },
550 /*02*/ { "add", TRUE, BYTE, op2(E, R), 0 },
551 /*03*/ { "add", TRUE, LONG, op2(E, R), 0 },
552 /*04*/ { "add", FALSE, BYTE, op2(Is, A), 0 },
553 /*05*/ { "add", FALSE, LONG, op2(Is, A), 0 },
554 /*06*/ { "push", FALSE, NONE, op1(Si), 0 },
555 /*07*/ { "pop", FALSE, NONE, op1(Si), 0 },
556
557 /*08*/ { "or", TRUE, BYTE, op2(R, E), 0 },
558 /*09*/ { "or", TRUE, LONG, op2(R, E), 0 },
559 /*0a*/ { "or", TRUE, BYTE, op2(E, R), 0 },
560 /*0b*/ { "or", TRUE, LONG, op2(E, R), 0 },
561 /*0c*/ { "or", FALSE, BYTE, op2(I, A), 0 },
562 /*0d*/ { "or", FALSE, LONG, op2(I, A), 0 },
563 /*0e*/ { "push", FALSE, NONE, op1(Si), 0 },
564 /*0f*/ { "", FALSE, NONE, 0, 0 },
565
566 /*10*/ { "adc", TRUE, BYTE, op2(R, E), 0 },
567 /*11*/ { "adc", TRUE, LONG, op2(R, E), 0 },
568 /*12*/ { "adc", TRUE, BYTE, op2(E, R), 0 },
569 /*13*/ { "adc", TRUE, LONG, op2(E, R), 0 },
570 /*14*/ { "adc", FALSE, BYTE, op2(Is, A), 0 },
571 /*15*/ { "adc", FALSE, LONG, op2(Is, A), 0 },
572 /*16*/ { "push", FALSE, NONE, op1(Si), 0 },
573 /*17*/ { "pop", FALSE, NONE, op1(Si), 0 },
574
575 /*18*/ { "sbb", TRUE, BYTE, op2(R, E), 0 },
576 /*19*/ { "sbb", TRUE, LONG, op2(R, E), 0 },
577 /*1a*/ { "sbb", TRUE, BYTE, op2(E, R), 0 },
578 /*1b*/ { "sbb", TRUE, LONG, op2(E, R), 0 },
579 /*1c*/ { "sbb", FALSE, BYTE, op2(Is, A), 0 },
580 /*1d*/ { "sbb", FALSE, LONG, op2(Is, A), 0 },
581 /*1e*/ { "push", FALSE, NONE, op1(Si), 0 },
582 /*1f*/ { "pop", FALSE, NONE, op1(Si), 0 },
583
584 /*20*/ { "and", TRUE, BYTE, op2(R, E), 0 },
585 /*21*/ { "and", TRUE, LONG, op2(R, E), 0 },
586 /*22*/ { "and", TRUE, BYTE, op2(E, R), 0 },
587 /*23*/ { "and", TRUE, LONG, op2(E, R), 0 },
588 /*24*/ { "and", FALSE, BYTE, op2(I, A), 0 },
589 /*25*/ { "and", FALSE, LONG, op2(I, A), 0 },
590 /*26*/ { "", FALSE, NONE, 0, 0 },
591 /*27*/ { "aaa", FALSE, NONE, 0, 0 },
592
593 /*28*/ { "sub", TRUE, BYTE, op2(R, E), 0 },
594 /*29*/ { "sub", TRUE, LONG, op2(R, E), 0 },
595 /*2a*/ { "sub", TRUE, BYTE, op2(E, R), 0 },
596 /*2b*/ { "sub", TRUE, LONG, op2(E, R), 0 },
597 /*2c*/ { "sub", FALSE, BYTE, op2(Is, A), 0 },
598 /*2d*/ { "sub", FALSE, LONG, op2(Is, A), 0 },
599 /*2e*/ { "", FALSE, NONE, 0, 0 },
600 /*2f*/ { "das", FALSE, NONE, 0, 0 },
601
602 /*30*/ { "xor", TRUE, BYTE, op2(R, E), 0 },
603 /*31*/ { "xor", TRUE, LONG, op2(R, E), 0 },
604 /*32*/ { "xor", TRUE, BYTE, op2(E, R), 0 },
605 /*33*/ { "xor", TRUE, LONG, op2(E, R), 0 },
606 /*34*/ { "xor", FALSE, BYTE, op2(I, A), 0 },
607 /*35*/ { "xor", FALSE, LONG, op2(I, A), 0 },
608 /*36*/ { "", FALSE, NONE, 0, 0 },
609 /*37*/ { "daa", FALSE, NONE, 0, 0 },
610
611 /*38*/ { "cmp", TRUE, BYTE, op2(R, E), 0 },
612 /*39*/ { "cmp", TRUE, LONG, op2(R, E), 0 },
613 /*3a*/ { "cmp", TRUE, BYTE, op2(E, R), 0 },
614 /*3b*/ { "cmp", TRUE, LONG, op2(E, R), 0 },
615 /*3c*/ { "cmp", FALSE, BYTE, op2(Is, A), 0 },
616 /*3d*/ { "cmp", FALSE, LONG, op2(Is, A), 0 },
617 /*3e*/ { "", FALSE, NONE, 0, 0 },
618 /*3f*/ { "aas", FALSE, NONE, 0, 0 },
619
620 /*40*/ { "inc", FALSE, LONG, op1(Ri), 0 },
621 /*41*/ { "inc", FALSE, LONG, op1(Ri), 0 },
622 /*42*/ { "inc", FALSE, LONG, op1(Ri), 0 },
623 /*43*/ { "inc", FALSE, LONG, op1(Ri), 0 },
624 /*44*/ { "inc", FALSE, LONG, op1(Ri), 0 },
625 /*45*/ { "inc", FALSE, LONG, op1(Ri), 0 },
626 /*46*/ { "inc", FALSE, LONG, op1(Ri), 0 },
627 /*47*/ { "inc", FALSE, LONG, op1(Ri), 0 },
628
629 /*48*/ { "dec", FALSE, LONG, op1(Ri), 0 },
630 /*49*/ { "dec", FALSE, LONG, op1(Ri), 0 },
631 /*4a*/ { "dec", FALSE, LONG, op1(Ri), 0 },
632 /*4b*/ { "dec", FALSE, LONG, op1(Ri), 0 },
633 /*4c*/ { "dec", FALSE, LONG, op1(Ri), 0 },
634 /*4d*/ { "dec", FALSE, LONG, op1(Ri), 0 },
635 /*4e*/ { "dec", FALSE, LONG, op1(Ri), 0 },
636 /*4f*/ { "dec", FALSE, LONG, op1(Ri), 0 },
637
638 /*50*/ { "push", FALSE, LONG, op1(Ri), 0 },
639 /*51*/ { "push", FALSE, LONG, op1(Ri), 0 },
640 /*52*/ { "push", FALSE, LONG, op1(Ri), 0 },
641 /*53*/ { "push", FALSE, LONG, op1(Ri), 0 },
642 /*54*/ { "push", FALSE, LONG, op1(Ri), 0 },
643 /*55*/ { "push", FALSE, LONG, op1(Ri), 0 },
644 /*56*/ { "push", FALSE, LONG, op1(Ri), 0 },
645 /*57*/ { "push", FALSE, LONG, op1(Ri), 0 },
646
647 /*58*/ { "pop", FALSE, LONG, op1(Ri), 0 },
648 /*59*/ { "pop", FALSE, LONG, op1(Ri), 0 },
649 /*5a*/ { "pop", FALSE, LONG, op1(Ri), 0 },
650 /*5b*/ { "pop", FALSE, LONG, op1(Ri), 0 },
651 /*5c*/ { "pop", FALSE, LONG, op1(Ri), 0 },
652 /*5d*/ { "pop", FALSE, LONG, op1(Ri), 0 },
653 /*5e*/ { "pop", FALSE, LONG, op1(Ri), 0 },
654 /*5f*/ { "pop", FALSE, LONG, op1(Ri), 0 },
655
656 /*60*/ { "pusha", FALSE, LONG, 0, 0 },
657 /*61*/ { "popa", FALSE, LONG, 0, 0 },
658 /*62*/ { "bound", TRUE, LONG, op2(E, R), 0 },
659 /*63*/ { "arpl", TRUE, NONE, op2(Ew,Rw), 0 },
660
661 /*64*/ { "", FALSE, NONE, 0, 0 },
662 /*65*/ { "", FALSE, NONE, 0, 0 },
663 /*66*/ { "", FALSE, NONE, 0, 0 },
664 /*67*/ { "", FALSE, NONE, 0, 0 },
665
666 /*68*/ { "push", FALSE, LONG, op1(I), 0 },
667 /*69*/ { "imul", TRUE, LONG, op3(I,E,R), 0 },
668 /*6a*/ { "push", FALSE, LONG, op1(Ib), 0 },
669 /*6b*/ { "imul", TRUE, LONG, op3(Ibs,E,R),0 },
670 /*6c*/ { "ins", FALSE, BYTE, op2(DX, DI), 0 },
671 /*6d*/ { "ins", FALSE, LONG, op2(DX, DI), 0 },
672 /*6e*/ { "outs", FALSE, BYTE, op2(SI, DX), 0 },
673 /*6f*/ { "outs", FALSE, LONG, op2(SI, DX), 0 },
674
675 /*70*/ { "jo", FALSE, NONE, op1(Db), 0 },
676 /*71*/ { "jno", FALSE, NONE, op1(Db), 0 },
677 /*72*/ { "jb", FALSE, NONE, op1(Db), 0 },
678 /*73*/ { "jnb", FALSE, NONE, op1(Db), 0 },
679 /*74*/ { "jz", FALSE, NONE, op1(Db), 0 },
680 /*75*/ { "jnz", FALSE, NONE, op1(Db), 0 },
681 /*76*/ { "jbe", FALSE, NONE, op1(Db), 0 },
682 /*77*/ { "jnbe", FALSE, NONE, op1(Db), 0 },
683
684 /*78*/ { "js", FALSE, NONE, op1(Db), 0 },
685 /*79*/ { "jns", FALSE, NONE, op1(Db), 0 },
686 /*7a*/ { "jp", FALSE, NONE, op1(Db), 0 },
687 /*7b*/ { "jnp", FALSE, NONE, op1(Db), 0 },
688 /*7c*/ { "jl", FALSE, NONE, op1(Db), 0 },
689 /*7d*/ { "jnl", FALSE, NONE, op1(Db), 0 },
690 /*7e*/ { "jle", FALSE, NONE, op1(Db), 0 },
691 /*7f*/ { "jnle", FALSE, NONE, op1(Db), 0 },
692
693 /*80*/ { "", TRUE, BYTE, op2(I, E), (char *)db_Grp1 },
694 /*81*/ { "", TRUE, LONG, op2(I, E), (char *)db_Grp1 },
695 /*82*/ { "", TRUE, BYTE, op2(Is,E), (char *)db_Grp1 },
696 /*83*/ { "", TRUE, LONG, op2(Ibs,E), (char *)db_Grp1 },
697 /*84*/ { "test", TRUE, BYTE, op2(R, E), 0 },
698 /*85*/ { "test", TRUE, LONG, op2(R, E), 0 },
699 /*86*/ { "xchg", TRUE, BYTE, op2(R, E), 0 },
700 /*87*/ { "xchg", TRUE, LONG, op2(R, E), 0 },
701
702 /*88*/ { "mov", TRUE, BYTE, op2(R, E), 0 },
703 /*89*/ { "mov", TRUE, LONG, op2(R, E), 0 },
704 /*8a*/ { "mov", TRUE, BYTE, op2(E, R), 0 },
705 /*8b*/ { "mov", TRUE, LONG, op2(E, R), 0 },
706 /*8c*/ { "mov", TRUE, NONE, op2(S, Ew), 0 },
707 /*8d*/ { "lea", TRUE, LONG, op2(E, R), 0 },
708 /*8e*/ { "mov", TRUE, NONE, op2(Ew, S), 0 },
709 /*8f*/ { "pop", TRUE, LONG, op1(E), 0 },
710
711 /*90*/ { "nop", FALSE, NONE, 0, 0 },
712 /*91*/ { "xchg", FALSE, LONG, op2(A, Ri), 0 },
713 /*92*/ { "xchg", FALSE, LONG, op2(A, Ri), 0 },
714 /*93*/ { "xchg", FALSE, LONG, op2(A, Ri), 0 },
715 /*94*/ { "xchg", FALSE, LONG, op2(A, Ri), 0 },
716 /*95*/ { "xchg", FALSE, LONG, op2(A, Ri), 0 },
717 /*96*/ { "xchg", FALSE, LONG, op2(A, Ri), 0 },
718 /*97*/ { "xchg", FALSE, LONG, op2(A, Ri), 0 },
719
720 /*98*/ { "cbw", FALSE, SDEP, 0, "cwde" }, /* cbw/cwde */
721 /*99*/ { "cwd", FALSE, SDEP, 0, "cdq" }, /* cwd/cdq */
722 /*9a*/ { "lcall", FALSE, NONE, op1(OS), 0 },
723 /*9b*/ { "wait", FALSE, NONE, 0, 0 },
724 /*9c*/ { "pushf", FALSE, LONG, 0, 0 },
725 /*9d*/ { "popf", FALSE, LONG, 0, 0 },
726 /*9e*/ { "sahf", FALSE, NONE, 0, 0 },
727 /*9f*/ { "lahf", FALSE, NONE, 0, 0 },
728
729 /*a0*/ { "mov", FALSE, BYTE, op2(O, A), 0 },
730 /*a1*/ { "mov", FALSE, LONG, op2(O, A), 0 },
731 /*a2*/ { "mov", FALSE, BYTE, op2(A, O), 0 },
732 /*a3*/ { "mov", FALSE, LONG, op2(A, O), 0 },
733 /*a4*/ { "movs", FALSE, BYTE, op2(SI,DI), 0 },
734 /*a5*/ { "movs", FALSE, LONG, op2(SI,DI), 0 },
735 /*a6*/ { "cmps", FALSE, BYTE, op2(SI,DI), 0 },
736 /*a7*/ { "cmps", FALSE, LONG, op2(SI,DI), 0 },
737
738 /*a8*/ { "test", FALSE, BYTE, op2(I, A), 0 },
739 /*a9*/ { "test", FALSE, LONG, op2(I, A), 0 },
740 /*aa*/ { "stos", FALSE, BYTE, op1(DI), 0 },
741 /*ab*/ { "stos", FALSE, LONG, op1(DI), 0 },
742 /*ac*/ { "lods", FALSE, BYTE, op1(SI), 0 },
743 /*ad*/ { "lods", FALSE, LONG, op1(SI), 0 },
744 /*ae*/ { "scas", FALSE, BYTE, op1(DI), 0 },
745 /*af*/ { "scas", FALSE, LONG, op1(DI), 0 },
746
747 /*b0*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 },
748 /*b1*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 },
749 /*b2*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 },
750 /*b3*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 },
751 /*b4*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 },
752 /*b5*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 },
753 /*b6*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 },
754 /*b7*/ { "mov", FALSE, BYTE, op2(I, Ri), 0 },
755
756 /*b8*/ { "mov", FALSE, LONG, op2(I, Ri), 0 },
757 /*b9*/ { "mov", FALSE, LONG, op2(I, Ri), 0 },
758 /*ba*/ { "mov", FALSE, LONG, op2(I, Ri), 0 },
759 /*bb*/ { "mov", FALSE, LONG, op2(I, Ri), 0 },
760 /*bc*/ { "mov", FALSE, LONG, op2(I, Ri), 0 },
761 /*bd*/ { "mov", FALSE, LONG, op2(I, Ri), 0 },
762 /*be*/ { "mov", FALSE, LONG, op2(I, Ri), 0 },
763 /*bf*/ { "mov", FALSE, LONG, op2(I, Ri), 0 },
764
765 /*c0*/ { "", TRUE, BYTE, op2(Ib, E), (char *)db_Grp2 },
766 /*c1*/ { "", TRUE, LONG, op2(Ib, E), (char *)db_Grp2 },
767 /*c2*/ { "ret", FALSE, NONE, op1(Iw), 0 },
768 /*c3*/ { "ret", FALSE, NONE, 0, 0 },
769 /*c4*/ { "les", TRUE, LONG, op2(E, R), 0 },
770 /*c5*/ { "lds", TRUE, LONG, op2(E, R), 0 },
771 /*c6*/ { "mov", TRUE, BYTE, op2(I, E), 0 },
772 /*c7*/ { "mov", TRUE, LONG, op2(I, E), 0 },
773
774 /*c8*/ { "enter", FALSE, NONE, op2(Iw, Ib), 0 },
775 /*c9*/ { "leave", FALSE, NONE, 0, 0 },
776 /*ca*/ { "lret", FALSE, NONE, op1(Iw), 0 },
777 /*cb*/ { "lret", FALSE, NONE, 0, 0 },
778 /*cc*/ { "int", FALSE, NONE, op1(o3), 0 },
779 /*cd*/ { "int", FALSE, NONE, op1(Ib), 0 },
780 /*ce*/ { "into", FALSE, NONE, 0, 0 },
781 /*cf*/ { "iret", FALSE, NONE, 0, 0 },
782
783 /*d0*/ { "", TRUE, BYTE, op2(o1, E), (char *)db_Grp2 },
784 /*d1*/ { "", TRUE, LONG, op2(o1, E), (char *)db_Grp2 },
785 /*d2*/ { "", TRUE, BYTE, op2(CL, E), (char *)db_Grp2 },
786 /*d3*/ { "", TRUE, LONG, op2(CL, E), (char *)db_Grp2 },
787 /*d4*/ { "aam", TRUE, NONE, 0, 0 },
788 /*d5*/ { "aad", TRUE, NONE, 0, 0 },
789 /*d6*/ { "", FALSE, NONE, 0, 0 },
790 /*d7*/ { "xlat", FALSE, BYTE, op1(BX), 0 },
791
792 /*d8*/ { "", TRUE, NONE, 0, (char *)db_Esc8 },
793 /*d9*/ { "", TRUE, NONE, 0, (char *)db_Esc9 },
794 /*da*/ { "", TRUE, NONE, 0, (char *)db_Esca },
795 /*db*/ { "", TRUE, NONE, 0, (char *)db_Escb },
796 /*dc*/ { "", TRUE, NONE, 0, (char *)db_Escc },
797 /*dd*/ { "", TRUE, NONE, 0, (char *)db_Escd },
798 /*de*/ { "", TRUE, NONE, 0, (char *)db_Esce },
799 /*df*/ { "", TRUE, NONE, 0, (char *)db_Escf },
800
801 /*e0*/ { "loopne",FALSE, NONE, op1(Db), 0 },
802 /*e1*/ { "loope", FALSE, NONE, op1(Db), 0 },
803 /*e2*/ { "loop", FALSE, NONE, op1(Db), 0 },
804 /*e3*/ { "jcxz", FALSE, SDEP, op1(Db), "jecxz" },
805 /*e4*/ { "in", FALSE, BYTE, op2(Ib, A), 0 },
806 /*e5*/ { "in", FALSE, LONG, op2(Ib, A) , 0 },
807 /*e6*/ { "out", FALSE, BYTE, op2(A, Ib), 0 },
808 /*e7*/ { "out", FALSE, LONG, op2(A, Ib) , 0 },
809
810 /*e8*/ { "call", FALSE, NONE, op1(Dl), 0 },
811 /*e9*/ { "jmp", FALSE, NONE, op1(Dl), 0 },
812 /*ea*/ { "ljmp", FALSE, NONE, op1(OS), 0 },
813 /*eb*/ { "jmp", FALSE, NONE, op1(Db), 0 },
814 /*ec*/ { "in", FALSE, BYTE, op2(DX, A), 0 },
815 /*ed*/ { "in", FALSE, LONG, op2(DX, A) , 0 },
816 /*ee*/ { "out", FALSE, BYTE, op2(A, DX), 0 },
817 /*ef*/ { "out", FALSE, LONG, op2(A, DX) , 0 },
818
819 /*f0*/ { "", FALSE, NONE, 0, 0 },
820 /*f1*/ { "", FALSE, NONE, 0, 0 },
821 /*f2*/ { "", FALSE, NONE, 0, 0 },
822 /*f3*/ { "", FALSE, NONE, 0, 0 },
823 /*f4*/ { "hlt", FALSE, NONE, 0, 0 },
824 /*f5*/ { "cmc", FALSE, NONE, 0, 0 },
825 /*f6*/ { "", TRUE, BYTE, 0, (char *)db_Grp3 },
826 /*f7*/ { "", TRUE, LONG, 0, (char *)db_Grp3 },
827
828 /*f8*/ { "clc", FALSE, NONE, 0, 0 },
829 /*f9*/ { "stc", FALSE, NONE, 0, 0 },
830 /*fa*/ { "cli", FALSE, NONE, 0, 0 },
831 /*fb*/ { "sti", FALSE, NONE, 0, 0 },
832 /*fc*/ { "cld", FALSE, NONE, 0, 0 },
833 /*fd*/ { "std", FALSE, NONE, 0, 0 },
834 /*fe*/ { "", TRUE, NONE, 0, (char *)db_Grp4 },
835 /*ff*/ { "", TRUE, NONE, 0, (char *)db_Grp5 },
836 };
837
838 static const struct inst db_bad_inst =
839 { "???", FALSE, NONE, 0, 0 }
840 ;
841
842 #define f_mod(byte) ((byte)>>6)
843 #define f_reg(byte) (((byte)>>3)&0x7)
844 #define f_rm(byte) ((byte)&0x7)
845
846 #define sib_ss(byte) ((byte)>>6)
847 #define sib_index(byte) (((byte)>>3)&0x7)
848 #define sib_base(byte) ((byte)&0x7)
849
850 struct i_addr {
851 int is_reg; /* if reg, reg number is in 'disp' */
852 int disp;
853 const char * base;
854 const char * index;
855 int ss;
856 };
857
858 static const char * const db_index_reg_16[8] = {
859 "%bx,%si",
860 "%bx,%di",
861 "%bp,%si",
862 "%bp,%di",
863 "%si",
864 "%di",
865 "%bp",
866 "%bx"
867 };
868
869 static const char * const db_reg[3][8] = {
870 { "%al", "%cl", "%dl", "%bl", "%ah", "%ch", "%dh", "%bh" },
871 { "%ax", "%cx", "%dx", "%bx", "%sp", "%bp", "%si", "%di" },
872 { "%eax", "%ecx", "%edx", "%ebx", "%esp", "%ebp", "%esi", "%edi" }
873 };
874
875 static const char * const db_seg_reg[8] = {
876 "%es", "%cs", "%ss", "%ds", "%fs", "%gs", "", ""
877 };
878
879 /*
880 * lengths for size attributes
881 */
882 static const int db_lengths[] = {
883 1, /* BYTE */
884 2, /* WORD */
885 4, /* LONG */
886 8, /* QUAD */
887 4, /* SNGL */
888 8, /* DBLR */
889 10, /* EXTR */
890 };
891
892 static unsigned int db_get_task_value( const DBG_ADDR *addr,
893 int size, int is_signed )
894 {
895 unsigned int result;
896 unsigned char *p = DBG_ADDR_TO_LIN( addr );
897
898 switch(size)
899 {
900 case 4:
901 if (is_signed) result = (unsigned int) *(int *)p;
902 else result = *(unsigned int *)p;
903 break;
904 case 2:
905 if (is_signed) result = (unsigned int) *(short int *)p;
906 else result = *(unsigned short int *)p;
907 break;
908 case 1:
909 if (is_signed) result = (unsigned int) *(char *)p;
910 else result = *(unsigned char *)p;
911 break;
912 default:
913 fprintf(stderr, "Illegal size specified\n");
914 result = 0;
915 break;
916 }
917 return result;
918 }
919
920 #define get_value_inc(result, addr, size, is_signed) \
921 result = db_get_task_value((addr), (size), (is_signed)); \
922 if (!db_disasm_16) (addr)->off += (size); \
923 else (addr)->off = ((addr)->off + (size)) & 0xffff;
924
925 /*
926 * Read address at location and return updated location.
927 */
928 void db_read_address( DBG_ADDR *addr, int short_addr, int regmodrm,
929 struct i_addr *addrp )
930 {
931 int mod, rm, sib, index, disp;
932
933 mod = f_mod(regmodrm);
934 rm = f_rm(regmodrm);
935
936 if (mod == 3) {
937 addrp->is_reg = TRUE;
938 addrp->disp = rm;
939 return;
940 }
941 addrp->is_reg = FALSE;
942 addrp->index = 0;
943
944 if (short_addr) {
945 addrp->index = 0;
946 addrp->ss = 0;
947 switch (mod) {
948 case 0:
949 if (rm == 6) {
950 get_value_inc(disp, addr, 2, TRUE);
951 addrp->disp = disp;
952 addrp->base = 0;
953 }
954 else {
955 addrp->disp = 0;
956 addrp->base = db_index_reg_16[rm];
957 }
958 break;
959 case 1:
960 get_value_inc(disp, addr, 1, TRUE);
961 addrp->disp = disp;
962 addrp->base = db_index_reg_16[rm];
963 break;
964 case 2:
965 get_value_inc(disp, addr, 2, TRUE);
966 addrp->disp = disp;
967 addrp->base = db_index_reg_16[rm];
968 break;
969 }
970 }
971 else {
972 if (mod != 3 && rm == 4) {
973 get_value_inc(sib, addr, 1, FALSE);
974 rm = sib_base(sib);
975 index = sib_index(sib);
976 if (index != 4)
977 addrp->index = db_reg[LONG][index];
978 addrp->ss = sib_ss(sib);
979 }
980
981 switch (mod) {
982 case 0:
983 if (rm == 5) {
984 get_value_inc(addrp->disp, addr, 4, FALSE);
985 addrp->base = 0;
986 }
987 else {
988 addrp->disp = 0;
989 addrp->base = db_reg[LONG][rm];
990 }
991 break;
992
993 case 1:
994 get_value_inc(disp, addr, 1, TRUE);
995 addrp->disp = disp;
996 addrp->base = db_reg[LONG][rm];
997 break;
998
999 case 2:
1000 get_value_inc(disp, addr, 4, FALSE);
1001 addrp->disp = disp;
1002 addrp->base = db_reg[LONG][rm];
1003 break;
1004 }
1005 }
1006 }
1007
1008 static void db_task_printsym(unsigned int addr, int size)
1009 {
1010 DBG_ADDR address;
1011
1012 address.type = NULL;
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 fprintf(stderr,"%s", db_reg[size][addrp->disp]);
1023 return;
1024 }
1025
1026 if (seg) {
1027 fprintf(stderr,"%s:", seg);
1028 }
1029
1030 if (addrp->base != 0 || addrp->index != 0) {
1031 fprintf(stderr,"0x%x", addrp->disp);
1032 fprintf(stderr,"(");
1033 if (addrp->base)
1034 fprintf(stderr,"%s", addrp->base);
1035 if (addrp->index)
1036 fprintf(stderr,",%s,%d", addrp->index, 1<<addrp->ss);
1037 fprintf(stderr,")");
1038 }
1039 else {
1040
1041 /* try to get destination of indirect call
1042 does not work for segmented adresses */
1043 if (!seg && byref) {
1044 DBG_ADDR dbg_addr = {NULL, 0, 0};
1045
1046 dbg_addr.off = addrp->disp;
1047 fprintf(stderr,"0x%x -> ", addrp->disp);
1048 if (DEBUG_IsBadReadPtr( &dbg_addr, sizeof(LPDWORD))) {
1049 fprintf(stderr, "(invalid source)");
1050 } else {
1051 dbg_addr.off = *(LPDWORD)(addrp->disp);
1052 if (DEBUG_IsBadReadPtr( &dbg_addr, sizeof(DWORD)))
1053 fprintf(stderr, "(invalid destination)");
1054 else
1055 db_task_printsym(dbg_addr.off, 0);
1056 }
1057 }
1058 else
1059 db_task_printsym(addrp->disp, size);
1060 }
1061 }
1062
1063 /*
1064 * Disassemble floating-point ("escape") instruction
1065 * and return updated location.
1066 */
1067 void db_disasm_esc( DBG_ADDR *addr, int inst, int short_addr,
1068 int size, char *seg )
1069 {
1070 int regmodrm;
1071 const struct finst *fp;
1072 int mod;
1073 struct i_addr address;
1074 const char * name;
1075
1076 get_value_inc(regmodrm, addr, 1, FALSE);
1077 if( !db_display )
1078 {
1079 return;
1080 }
1081
1082 fp = &db_Esc_inst[inst - 0xd8][f_reg(regmodrm)];
1083 mod = f_mod(regmodrm);
1084 if (mod != 3) {
1085 /*
1086 * Normal address modes.
1087 */
1088 db_read_address( addr, short_addr, regmodrm, &address);
1089 fprintf(stderr,fp->f_name);
1090 switch(fp->f_size) {
1091 case SNGL:
1092 fprintf(stderr,"s");
1093 break;
1094 case DBLR:
1095 fprintf(stderr,"l");
1096 break;
1097 case EXTR:
1098 fprintf(stderr,"t");
1099 break;
1100 case WORD:
1101 fprintf(stderr,"s");
1102 break;
1103 case LONG:
1104 fprintf(stderr,"l");
1105 break;
1106 case QUAD:
1107 fprintf(stderr,"q");
1108 break;
1109 default:
1110 break;
1111 }
1112 fprintf(stderr,"\t");
1113 db_print_address(seg, BYTE, &address, 0);
1114 }
1115 else {
1116 /*
1117 * 'reg-reg' - special formats
1118 */
1119 switch (fp->f_rrmode) {
1120 case op2(ST,STI):
1121 name = (fp->f_rrname) ? fp->f_rrname : fp->f_name;
1122 fprintf(stderr,"%s\t%%st,%%st(%d)",name,f_rm(regmodrm));
1123 break;
1124 case op2(STI,ST):
1125 name = (fp->f_rrname) ? fp->f_rrname : fp->f_name;
1126 fprintf(stderr,"%s\t%%st(%d),%%st",name, f_rm(regmodrm));
1127 break;
1128 case op1(STI):
1129 name = (fp->f_rrname) ? fp->f_rrname : fp->f_name;
1130 fprintf(stderr,"%s\t%%st(%d)",name, f_rm(regmodrm));
1131 break;
1132 case op1(X):
1133 fprintf(stderr,"%s", ((char **)fp->f_rrname)[f_rm(regmodrm)]);
1134 break;
1135 case op1(XA):
1136 fprintf(stderr,"%s\t%%ax",
1137 ((char **)fp->f_rrname)[f_rm(regmodrm)]);
1138 break;
1139 default:
1140 fprintf(stderr,"<bad instruction>");
1141 break;
1142 }
1143 }
1144 }
1145
1146
1147 /***********************************************************************
1148 * DEBUG_Disasm
1149 *
1150 * Disassemble instruction at 'addr'. addr is changed to point to the
1151 * start of the next instruction.
1152 */
1153 void DEBUG_Disasm( DBG_ADDR *addr, int display )
1154 {
1155 int inst;
1156 int size;
1157 int short_addr;
1158 char * seg;
1159 const struct inst *ip;
1160 const char *i_name;
1161 int i_size;
1162 int i_mode;
1163 int regmodrm = 0;
1164 BOOL first;
1165 int displ;
1166 int prefix;
1167 int imm;
1168 int len;
1169 struct i_addr address;
1170
1171 /*
1172 * Set this so we get can supress the printout if we need to.
1173 */
1174 db_display = display;
1175 db_disasm_16 = IS_SELECTOR_V86(addr->seg) || !IS_SELECTOR_32BIT(addr->seg);
1176
1177 get_value_inc( inst, addr, 1, FALSE );
1178
1179 if (db_disasm_16) {
1180 short_addr = TRUE;
1181 size = WORD;
1182 }
1183 else {
1184 short_addr = FALSE;
1185 size = LONG;
1186 }
1187 seg = 0;
1188
1189 /*
1190 * Get prefixes
1191 */
1192 prefix = TRUE;
1193 do {
1194 switch (inst) {
1195 case 0x66: /* data16 */
1196 if (size == LONG)
1197 size = WORD;
1198 else
1199 size = LONG;
1200 break;
1201 case 0x67:
1202 short_addr = !short_addr;
1203 break;
1204 case 0x26:
1205 seg = "%es";
1206 break;
1207 case 0x36:
1208 seg = "%ss";
1209 break;
1210 case 0x2e:
1211 seg = "%cs";
1212 break;
1213 case 0x3e:
1214 seg = "%ds";
1215 break;
1216 case 0x64:
1217 seg = "%fs";
1218 break;
1219 case 0x65:
1220 seg = "%gs";
1221 break;
1222 case 0xf0:
1223 if( db_display )
1224 fprintf(stderr,"lock ");
1225 break;
1226 case 0xf2:
1227 if( db_display )
1228 fprintf(stderr,"repne ");
1229 break;
1230 case 0xf3:
1231 if( db_display )
1232 fprintf(stderr,"repe "); /* XXX repe VS rep */
1233 break;
1234 default:
1235 prefix = FALSE;
1236 break;
1237 }
1238 if (prefix) {
1239 get_value_inc(inst, addr, 1, FALSE);
1240 }
1241 } while (prefix);
1242
1243 if (inst >= 0xd8 && inst <= 0xdf)
1244 {
1245 db_disasm_esc( addr, inst, short_addr, size, seg);
1246 return;
1247 }
1248
1249 if (inst == 0x0f) {
1250 get_value_inc(inst, addr, 1, FALSE);
1251 ip = db_inst_0f[inst>>4];
1252 if (ip == 0) {
1253 ip = &db_bad_inst;
1254 }
1255 else {
1256 ip = &ip[inst&0xf];
1257 }
1258 }
1259 else
1260 ip = &db_inst_table[inst];
1261
1262 if (ip->i_has_modrm) {
1263 get_value_inc(regmodrm, addr, 1, FALSE);
1264 db_read_address( addr, short_addr, regmodrm, &address);
1265 }
1266
1267 i_name = ip->i_name;
1268 i_size = ip->i_size;
1269 i_mode = ip->i_mode;
1270
1271 if (ip->i_extra == (char *)db_Grp1 ||
1272 ip->i_extra == (char *)db_Grp2 ||
1273 ip->i_extra == (char *)db_Grp6 ||
1274 ip->i_extra == (char *)db_Grp7 ||
1275 ip->i_extra == (char *)db_Grp8) {
1276 i_name = ((char **)ip->i_extra)[f_reg(regmodrm)];
1277 }
1278 else if (ip->i_extra == (char *)db_Grp3) {
1279 ip = (struct inst *)ip->i_extra;
1280 ip = &ip[f_reg(regmodrm)];
1281 i_name = ip->i_name;
1282 i_mode = ip->i_mode;
1283 }
1284 else if (ip->i_extra == (char *)db_Grp4 ||
1285 ip->i_extra == (char *)db_Grp5) {
1286 ip = (struct inst *)ip->i_extra;
1287 ip = &ip[f_reg(regmodrm)];
1288 i_name = ip->i_name;
1289 i_mode = ip->i_mode;
1290 i_size = ip->i_size;
1291 }
1292
1293 if (i_size == SDEP) {
1294 if( db_display )
1295 {
1296 if (size == WORD)
1297 fprintf(stderr,i_name);
1298 else
1299 fprintf(stderr,ip->i_extra);
1300 }
1301 }
1302 else {
1303 if( db_display )
1304 {
1305 fprintf(stderr,i_name);
1306 }
1307 if (i_size != NONE) {
1308 if (i_size == BYTE) {
1309 if( db_display )
1310 {
1311 fprintf(stderr,"b");
1312 }
1313 size = BYTE;
1314 }
1315 else if (i_size == WORD) {
1316 if( db_display )
1317 {
1318 fprintf(stderr,"w");
1319 }
1320 size = WORD;
1321 }
1322 else if (size == WORD)
1323 {
1324 if( db_display )
1325 {
1326 fprintf(stderr,"w");
1327 }
1328 }
1329 else
1330 {
1331 if( db_display )
1332 {
1333 fprintf(stderr,"l");
1334 }
1335 }
1336 }
1337 }
1338 if( db_display )
1339 {
1340 fprintf(stderr,"\t");
1341 }
1342 for (first = TRUE;
1343 i_mode != 0;
1344 i_mode >>= 8, first = FALSE)
1345 {
1346 if (!first && db_display)
1347 fprintf(stderr,",");
1348
1349 switch (i_mode & 0xFF) {
1350
1351 case E:
1352 if( db_display )
1353 {
1354 db_print_address(seg, size, &address, 0);
1355 }
1356 break;
1357
1358 case Eind:
1359 if( db_display )
1360 {
1361 fprintf(stderr,"*");
1362 db_print_address(seg, size, &address, 1);
1363 }
1364 break;
1365
1366 case Ew:
1367 if( db_display )
1368 {
1369 db_print_address(seg, WORD, &address, 0);
1370 }
1371 break;
1372
1373 case Eb:
1374 if( db_display )
1375 {
1376 db_print_address(seg, BYTE, &address, 0);
1377 }
1378 break;
1379
1380 case R:
1381 if( db_display )
1382 {
1383 fprintf(stderr,"%s", db_reg[size][f_reg(regmodrm)]);
1384 }
1385 break;
1386
1387 case Rw:
1388 if( db_display )
1389 {
1390 fprintf(stderr,"%s", db_reg[WORD][f_reg(regmodrm)]);
1391 }
1392 break;
1393
1394 case Ri:
1395 if( db_display )
1396 {
1397 fprintf(stderr,"%s", db_reg[size][f_rm(inst)]);
1398 }
1399 break;
1400
1401 case S:
1402 if( db_display )
1403 {
1404 fprintf(stderr,"%s", db_seg_reg[f_reg(regmodrm)]);
1405 }
1406 break;
1407
1408 case Si:
1409 if( db_display )
1410 {
1411 fprintf(stderr,"%s", db_seg_reg[f_reg(inst)]);
1412 }
1413 break;
1414
1415 case A:
1416 if( db_display )
1417 {
1418 fprintf(stderr,"%s", db_reg[size][0]); /* acc */
1419 }
1420 break;
1421
1422 case BX:
1423 if( db_display )
1424 {
1425 if (seg)
1426 fprintf(stderr,"%s:", seg);
1427 fprintf(stderr,"(%s)", short_addr ? "%bx" : "%ebx");
1428 }
1429 break;
1430
1431 case CL:
1432 if( db_display )
1433 {
1434 fprintf(stderr,"%%cl");
1435 }
1436 break;
1437
1438 case DX:
1439 if( db_display )
1440 {
1441 fprintf(stderr,"%%dx");
1442 }
1443 break;
1444
1445 case SI:
1446 if( db_display )
1447 {
1448 if (seg)
1449 fprintf(stderr,"%s:", seg);
1450 fprintf(stderr,"(%s)", short_addr ? "%si" : "%esi");
1451 }
1452 break;
1453
1454 case DI:
1455 if( db_display )
1456 {
1457 fprintf(stderr,"%%es:(%s)", short_addr ? "%di" : "%edi");
1458 }
1459 break;
1460
1461 case CR:
1462 if( db_display )
1463 {
1464 fprintf(stderr,"%%cr%d", f_reg(regmodrm));
1465 }
1466 break;
1467
1468 case DR:
1469 if( db_display )
1470 {
1471 fprintf(stderr,"%%dr%d", f_reg(regmodrm));
1472 }
1473 break;
1474
1475 case TR:
1476 if( db_display )
1477 {
1478 fprintf(stderr,"%%tr%d", f_reg(regmodrm));
1479 }
1480 break;
1481
1482 case I:
1483 len = db_lengths[size];
1484 get_value_inc(imm, addr, len, FALSE);/* unsigned */
1485 if( db_display )
1486 {
1487 fprintf(stderr,"$0x%x", imm);
1488 }
1489 break;
1490
1491 case Is:
1492 len = db_lengths[size];
1493 get_value_inc(imm, addr, len, TRUE); /* signed */
1494 if( db_display )
1495 {
1496 fprintf(stderr,"$%d", imm);
1497 }
1498 break;
1499
1500 case Ib:
1501 get_value_inc(imm, addr, 1, FALSE); /* unsigned */
1502 if( db_display )
1503 {
1504 fprintf(stderr,"$0x%x", imm);
1505 }
1506 break;
1507
1508 case Ibs:
1509 get_value_inc(imm, addr, 1, TRUE); /* signed */
1510 if( db_display )
1511 {
1512 fprintf(stderr,"$%d", imm);
1513 }
1514 break;
1515
1516 case Iw:
1517 get_value_inc(imm, addr, 2, FALSE); /* unsigned */
1518 if( db_display )
1519 {
1520 fprintf(stderr,"$0x%x", imm);
1521 }
1522 break;
1523
1524 case Il:
1525 get_value_inc(imm, addr, 4, FALSE);
1526 if( db_display )
1527 {
1528 fprintf(stderr,"$0x%x", imm);
1529 }
1530 break;
1531
1532 case O:
1533 if (short_addr) {
1534 get_value_inc(displ, addr, 2, TRUE);
1535 }
1536 else {
1537 get_value_inc(displ, addr, 4, TRUE);
1538 }
1539 if( !db_display )
1540 {
1541 break;
1542 }
1543
1544 if (seg)
1545 fprintf(stderr,"%s:0x%x",seg, displ);
1546 else
1547 db_task_printsym(displ, short_addr ? WORD : LONG);
1548 break;
1549
1550 case Db:
1551 get_value_inc(displ, addr, 1, TRUE);
1552 if( !db_display )
1553 {
1554 break;
1555 }
1556
1557 if (size == WORD) {
1558 /* offset only affects low 16 bits */
1559 displ = (addr->off & 0xffff0000)
1560 | ((addr->off + displ) & 0xffff);
1561 }
1562 else displ += addr->off;
1563 db_task_printsym(displ, size);
1564 break;
1565
1566 case Dl:
1567 if (size == WORD) {
1568 get_value_inc(displ, addr, 2, TRUE);
1569 /* offset only affects low 16 bits */
1570 displ = (addr->off & 0xffff0000)
1571 | ((addr->off + displ) & 0xffff);
1572 }
1573 else {
1574 get_value_inc(displ, addr, 4, TRUE);
1575 displ += addr->off;
1576 }
1577 if( !db_display )
1578 {
1579 break;
1580 }
1581 db_task_printsym( displ, size );
1582 break;
1583
1584 case o1:
1585 if( db_display )
1586 {
1587 fprintf(stderr,"$1");
1588 }
1589 break;
1590
1591 case o3:
1592 if( db_display )
1593 {
1594 fprintf(stderr,"$3");
1595 }
1596 break;
1597
1598 case OS:
1599 {
1600 DBG_ADDR address;
1601 get_value_inc( address.off, addr, /* offset */
1602 short_addr ? 2 : 4, FALSE );
1603 get_value_inc( address.seg, addr, /* segment */
1604 2, FALSE );
1605 if( db_display )
1606 {
1607 DEBUG_PrintAddress( &address, short_addr ? 16 : 32,
1608 TRUE );
1609 }
1610
1611 }
1612 break;
1613 }
1614 }
1615 }
1616
1617 #else /* __i386__ */
1618
1619 void DEBUG_Disasm( DBG_ADDR *addr, int display )
1620 {
1621 }
1622
1623 #endif /* __i386__ */
1624
Windows API implementation