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5d0734a7 | 1 | /* Print i386 instructions for GDB, the GNU debugger. |
41b96d55 ILT |
2 | Copyright (C) 1988, 89, 91, 93, 94, 95, 96, 1997 |
3 | Free Software Foundation, Inc. | |
5d0734a7 JK |
4 | |
5 | This file is part of GDB. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program; if not, write to the Free Software | |
726257a8 | 19 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
5d0734a7 JK |
20 | |
21 | /* | |
22 | * 80386 instruction printer by Pace Willisson (pace@prep.ai.mit.edu) | |
23 | * July 1988 | |
24 | * modified by John Hassey (hassey@dg-rtp.dg.com) | |
25 | */ | |
26 | ||
27 | /* | |
28 | * The main tables describing the instructions is essentially a copy | |
29 | * of the "Opcode Map" chapter (Appendix A) of the Intel 80386 | |
30 | * Programmers Manual. Usually, there is a capital letter, followed | |
31 | * by a small letter. The capital letter tell the addressing mode, | |
32 | * and the small letter tells about the operand size. Refer to | |
33 | * the Intel manual for details. | |
34 | */ | |
35 | ||
36 | #include "dis-asm.h" | |
726257a8 | 37 | #include "sysdep.h" |
5d0734a7 JK |
38 | |
39 | #define MAXLEN 20 | |
40 | ||
41 | #include <setjmp.h> | |
42 | ||
41b96d55 ILT |
43 | static int fetch_data PARAMS ((struct disassemble_info *, bfd_byte *)); |
44 | ||
726257a8 | 45 | struct dis_private |
5d0734a7 JK |
46 | { |
47 | /* Points to first byte not fetched. */ | |
48 | bfd_byte *max_fetched; | |
49 | bfd_byte the_buffer[MAXLEN]; | |
50 | bfd_vma insn_start; | |
51 | jmp_buf bailout; | |
52 | }; | |
53 | ||
54 | /* Make sure that bytes from INFO->PRIVATE_DATA->BUFFER (inclusive) | |
55 | to ADDR (exclusive) are valid. Returns 1 for success, longjmps | |
56 | on error. */ | |
57 | #define FETCH_DATA(info, addr) \ | |
726257a8 | 58 | ((addr) <= ((struct dis_private *)(info->private_data))->max_fetched \ |
5d0734a7 JK |
59 | ? 1 : fetch_data ((info), (addr))) |
60 | ||
61 | static int | |
62 | fetch_data (info, addr) | |
63 | struct disassemble_info *info; | |
64 | bfd_byte *addr; | |
65 | { | |
66 | int status; | |
726257a8 | 67 | struct dis_private *priv = (struct dis_private *)info->private_data; |
5d0734a7 JK |
68 | bfd_vma start = priv->insn_start + (priv->max_fetched - priv->the_buffer); |
69 | ||
70 | status = (*info->read_memory_func) (start, | |
71 | priv->max_fetched, | |
72 | addr - priv->max_fetched, | |
73 | info); | |
74 | if (status != 0) | |
75 | { | |
76 | (*info->memory_error_func) (status, start, info); | |
05545edc | 77 | longjmp (priv->bailout, 1); |
5d0734a7 JK |
78 | } |
79 | else | |
80 | priv->max_fetched = addr; | |
81 | return 1; | |
82 | } | |
83 | ||
84 | #define Eb OP_E, b_mode | |
85 | #define indirEb OP_indirE, b_mode | |
86 | #define Gb OP_G, b_mode | |
87 | #define Ev OP_E, v_mode | |
88 | #define indirEv OP_indirE, v_mode | |
89 | #define Ew OP_E, w_mode | |
90 | #define Ma OP_E, v_mode | |
91 | #define M OP_E, 0 | |
92 | #define Mp OP_E, 0 /* ? */ | |
93 | #define Gv OP_G, v_mode | |
94 | #define Gw OP_G, w_mode | |
95 | #define Rw OP_rm, w_mode | |
96 | #define Rd OP_rm, d_mode | |
97 | #define Ib OP_I, b_mode | |
98 | #define sIb OP_sI, b_mode /* sign extened byte */ | |
99 | #define Iv OP_I, v_mode | |
100 | #define Iw OP_I, w_mode | |
101 | #define Jb OP_J, b_mode | |
102 | #define Jv OP_J, v_mode | |
41b96d55 | 103 | #if 0 |
5d0734a7 | 104 | #define ONE OP_ONE, 0 |
41b96d55 | 105 | #endif |
5d0734a7 JK |
106 | #define Cd OP_C, d_mode |
107 | #define Dd OP_D, d_mode | |
108 | #define Td OP_T, d_mode | |
109 | ||
110 | #define eAX OP_REG, eAX_reg | |
111 | #define eBX OP_REG, eBX_reg | |
112 | #define eCX OP_REG, eCX_reg | |
113 | #define eDX OP_REG, eDX_reg | |
114 | #define eSP OP_REG, eSP_reg | |
115 | #define eBP OP_REG, eBP_reg | |
116 | #define eSI OP_REG, eSI_reg | |
117 | #define eDI OP_REG, eDI_reg | |
118 | #define AL OP_REG, al_reg | |
119 | #define CL OP_REG, cl_reg | |
120 | #define DL OP_REG, dl_reg | |
121 | #define BL OP_REG, bl_reg | |
122 | #define AH OP_REG, ah_reg | |
123 | #define CH OP_REG, ch_reg | |
124 | #define DH OP_REG, dh_reg | |
125 | #define BH OP_REG, bh_reg | |
126 | #define AX OP_REG, ax_reg | |
127 | #define DX OP_REG, dx_reg | |
128 | #define indirDX OP_REG, indir_dx_reg | |
129 | ||
130 | #define Sw OP_SEG, w_mode | |
131 | #define Ap OP_DIR, lptr | |
132 | #define Av OP_DIR, v_mode | |
133 | #define Ob OP_OFF, b_mode | |
134 | #define Ov OP_OFF, v_mode | |
135 | #define Xb OP_DSSI, b_mode | |
136 | #define Xv OP_DSSI, v_mode | |
137 | #define Yb OP_ESDI, b_mode | |
138 | #define Yv OP_ESDI, v_mode | |
139 | ||
140 | #define es OP_REG, es_reg | |
141 | #define ss OP_REG, ss_reg | |
142 | #define cs OP_REG, cs_reg | |
143 | #define ds OP_REG, ds_reg | |
144 | #define fs OP_REG, fs_reg | |
145 | #define gs OP_REG, gs_reg | |
146 | ||
eedca9da ILT |
147 | #define MX OP_MMX, 0 |
148 | #define EM OP_EM, v_mode | |
149 | #define MS OP_MS, b_mode | |
150 | ||
41b96d55 ILT |
151 | typedef int (*op_rtn) PARAMS ((int bytemode, int aflag, int dflag)); |
152 | ||
153 | static int OP_E PARAMS ((int, int, int)); | |
154 | static int OP_G PARAMS ((int, int, int)); | |
155 | static int OP_I PARAMS ((int, int, int)); | |
156 | static int OP_indirE PARAMS ((int, int, int)); | |
157 | static int OP_sI PARAMS ((int, int, int)); | |
158 | static int OP_REG PARAMS ((int, int, int)); | |
159 | static int OP_J PARAMS ((int, int, int)); | |
160 | static int OP_DIR PARAMS ((int, int, int)); | |
161 | static int OP_OFF PARAMS ((int, int, int)); | |
162 | static int OP_ESDI PARAMS ((int, int, int)); | |
163 | static int OP_DSSI PARAMS ((int, int, int)); | |
164 | static int OP_SEG PARAMS ((int, int, int)); | |
165 | static int OP_C PARAMS ((int, int, int)); | |
166 | static int OP_D PARAMS ((int, int, int)); | |
167 | static int OP_T PARAMS ((int, int, int)); | |
168 | static int OP_rm PARAMS ((int, int, int)); | |
169 | static int OP_ST PARAMS ((int, int, int)); | |
170 | static int OP_STi PARAMS ((int, int, int)); | |
171 | #if 0 | |
172 | static int OP_ONE PARAMS ((int, int, int)); | |
173 | #endif | |
eedca9da ILT |
174 | static int OP_MMX PARAMS ((int, int, int)); |
175 | static int OP_EM PARAMS ((int, int, int)); | |
176 | static int OP_MS PARAMS ((int, int, int)); | |
be0c8b05 SG |
177 | |
178 | static void append_prefix PARAMS ((void)); | |
179 | static void set_op PARAMS ((int op)); | |
180 | static void putop PARAMS ((char *template, int aflag, int dflag)); | |
181 | static void dofloat PARAMS ((int aflag, int dflag)); | |
182 | static int get16 PARAMS ((void)); | |
183 | static int get32 PARAMS ((void)); | |
184 | static void ckprefix PARAMS ((void)); | |
5d0734a7 JK |
185 | |
186 | #define b_mode 1 | |
187 | #define v_mode 2 | |
188 | #define w_mode 3 | |
189 | #define d_mode 4 | |
190 | ||
191 | #define es_reg 100 | |
192 | #define cs_reg 101 | |
193 | #define ss_reg 102 | |
194 | #define ds_reg 103 | |
195 | #define fs_reg 104 | |
196 | #define gs_reg 105 | |
197 | #define eAX_reg 107 | |
198 | #define eCX_reg 108 | |
199 | #define eDX_reg 109 | |
200 | #define eBX_reg 110 | |
201 | #define eSP_reg 111 | |
202 | #define eBP_reg 112 | |
203 | #define eSI_reg 113 | |
204 | #define eDI_reg 114 | |
205 | ||
206 | #define lptr 115 | |
207 | ||
208 | #define al_reg 116 | |
209 | #define cl_reg 117 | |
210 | #define dl_reg 118 | |
211 | #define bl_reg 119 | |
212 | #define ah_reg 120 | |
213 | #define ch_reg 121 | |
214 | #define dh_reg 122 | |
215 | #define bh_reg 123 | |
216 | ||
217 | #define ax_reg 124 | |
218 | #define cx_reg 125 | |
219 | #define dx_reg 126 | |
220 | #define bx_reg 127 | |
221 | #define sp_reg 128 | |
222 | #define bp_reg 129 | |
223 | #define si_reg 130 | |
224 | #define di_reg 131 | |
225 | ||
226 | #define indir_dx_reg 150 | |
227 | ||
228 | #define GRP1b NULL, NULL, 0 | |
229 | #define GRP1S NULL, NULL, 1 | |
230 | #define GRP1Ss NULL, NULL, 2 | |
231 | #define GRP2b NULL, NULL, 3 | |
232 | #define GRP2S NULL, NULL, 4 | |
233 | #define GRP2b_one NULL, NULL, 5 | |
234 | #define GRP2S_one NULL, NULL, 6 | |
235 | #define GRP2b_cl NULL, NULL, 7 | |
236 | #define GRP2S_cl NULL, NULL, 8 | |
237 | #define GRP3b NULL, NULL, 9 | |
238 | #define GRP3S NULL, NULL, 10 | |
239 | #define GRP4 NULL, NULL, 11 | |
240 | #define GRP5 NULL, NULL, 12 | |
241 | #define GRP6 NULL, NULL, 13 | |
242 | #define GRP7 NULL, NULL, 14 | |
243 | #define GRP8 NULL, NULL, 15 | |
726257a8 | 244 | #define GRP9 NULL, NULL, 16 |
eedca9da ILT |
245 | #define GRP10 NULL, NULL, 17 |
246 | #define GRP11 NULL, NULL, 18 | |
247 | #define GRP12 NULL, NULL, 19 | |
5d0734a7 JK |
248 | |
249 | #define FLOATCODE 50 | |
250 | #define FLOAT NULL, NULL, FLOATCODE | |
251 | ||
252 | struct dis386 { | |
253 | char *name; | |
41b96d55 | 254 | op_rtn op1; |
5d0734a7 | 255 | int bytemode1; |
41b96d55 | 256 | op_rtn op2; |
5d0734a7 | 257 | int bytemode2; |
41b96d55 | 258 | op_rtn op3; |
5d0734a7 JK |
259 | int bytemode3; |
260 | }; | |
261 | ||
be0c8b05 | 262 | static struct dis386 dis386[] = { |
5d0734a7 JK |
263 | /* 00 */ |
264 | { "addb", Eb, Gb }, | |
265 | { "addS", Ev, Gv }, | |
266 | { "addb", Gb, Eb }, | |
267 | { "addS", Gv, Ev }, | |
268 | { "addb", AL, Ib }, | |
269 | { "addS", eAX, Iv }, | |
eedca9da ILT |
270 | { "pushS", es }, |
271 | { "popS", es }, | |
5d0734a7 JK |
272 | /* 08 */ |
273 | { "orb", Eb, Gb }, | |
274 | { "orS", Ev, Gv }, | |
275 | { "orb", Gb, Eb }, | |
276 | { "orS", Gv, Ev }, | |
277 | { "orb", AL, Ib }, | |
278 | { "orS", eAX, Iv }, | |
eedca9da | 279 | { "pushS", cs }, |
5d0734a7 JK |
280 | { "(bad)" }, /* 0x0f extended opcode escape */ |
281 | /* 10 */ | |
282 | { "adcb", Eb, Gb }, | |
283 | { "adcS", Ev, Gv }, | |
284 | { "adcb", Gb, Eb }, | |
285 | { "adcS", Gv, Ev }, | |
286 | { "adcb", AL, Ib }, | |
287 | { "adcS", eAX, Iv }, | |
eedca9da ILT |
288 | { "pushS", ss }, |
289 | { "popS", ss }, | |
5d0734a7 JK |
290 | /* 18 */ |
291 | { "sbbb", Eb, Gb }, | |
292 | { "sbbS", Ev, Gv }, | |
293 | { "sbbb", Gb, Eb }, | |
294 | { "sbbS", Gv, Ev }, | |
295 | { "sbbb", AL, Ib }, | |
296 | { "sbbS", eAX, Iv }, | |
eedca9da ILT |
297 | { "pushS", ds }, |
298 | { "popS", ds }, | |
5d0734a7 JK |
299 | /* 20 */ |
300 | { "andb", Eb, Gb }, | |
301 | { "andS", Ev, Gv }, | |
302 | { "andb", Gb, Eb }, | |
303 | { "andS", Gv, Ev }, | |
304 | { "andb", AL, Ib }, | |
305 | { "andS", eAX, Iv }, | |
306 | { "(bad)" }, /* SEG ES prefix */ | |
307 | { "daa" }, | |
308 | /* 28 */ | |
309 | { "subb", Eb, Gb }, | |
310 | { "subS", Ev, Gv }, | |
311 | { "subb", Gb, Eb }, | |
312 | { "subS", Gv, Ev }, | |
313 | { "subb", AL, Ib }, | |
314 | { "subS", eAX, Iv }, | |
315 | { "(bad)" }, /* SEG CS prefix */ | |
316 | { "das" }, | |
317 | /* 30 */ | |
318 | { "xorb", Eb, Gb }, | |
319 | { "xorS", Ev, Gv }, | |
320 | { "xorb", Gb, Eb }, | |
321 | { "xorS", Gv, Ev }, | |
322 | { "xorb", AL, Ib }, | |
323 | { "xorS", eAX, Iv }, | |
324 | { "(bad)" }, /* SEG SS prefix */ | |
325 | { "aaa" }, | |
326 | /* 38 */ | |
327 | { "cmpb", Eb, Gb }, | |
328 | { "cmpS", Ev, Gv }, | |
329 | { "cmpb", Gb, Eb }, | |
330 | { "cmpS", Gv, Ev }, | |
331 | { "cmpb", AL, Ib }, | |
332 | { "cmpS", eAX, Iv }, | |
333 | { "(bad)" }, /* SEG DS prefix */ | |
334 | { "aas" }, | |
335 | /* 40 */ | |
336 | { "incS", eAX }, | |
337 | { "incS", eCX }, | |
338 | { "incS", eDX }, | |
339 | { "incS", eBX }, | |
340 | { "incS", eSP }, | |
341 | { "incS", eBP }, | |
342 | { "incS", eSI }, | |
343 | { "incS", eDI }, | |
344 | /* 48 */ | |
345 | { "decS", eAX }, | |
346 | { "decS", eCX }, | |
347 | { "decS", eDX }, | |
348 | { "decS", eBX }, | |
349 | { "decS", eSP }, | |
350 | { "decS", eBP }, | |
351 | { "decS", eSI }, | |
352 | { "decS", eDI }, | |
353 | /* 50 */ | |
354 | { "pushS", eAX }, | |
355 | { "pushS", eCX }, | |
356 | { "pushS", eDX }, | |
357 | { "pushS", eBX }, | |
358 | { "pushS", eSP }, | |
359 | { "pushS", eBP }, | |
360 | { "pushS", eSI }, | |
361 | { "pushS", eDI }, | |
362 | /* 58 */ | |
363 | { "popS", eAX }, | |
364 | { "popS", eCX }, | |
365 | { "popS", eDX }, | |
366 | { "popS", eBX }, | |
367 | { "popS", eSP }, | |
368 | { "popS", eBP }, | |
369 | { "popS", eSI }, | |
370 | { "popS", eDI }, | |
371 | /* 60 */ | |
372 | { "pusha" }, | |
373 | { "popa" }, | |
374 | { "boundS", Gv, Ma }, | |
375 | { "arpl", Ew, Gw }, | |
376 | { "(bad)" }, /* seg fs */ | |
377 | { "(bad)" }, /* seg gs */ | |
378 | { "(bad)" }, /* op size prefix */ | |
379 | { "(bad)" }, /* adr size prefix */ | |
380 | /* 68 */ | |
381 | { "pushS", Iv }, /* 386 book wrong */ | |
382 | { "imulS", Gv, Ev, Iv }, | |
eedca9da | 383 | { "pushS", sIb }, /* push of byte really pushes 2 or 4 bytes */ |
5d0734a7 JK |
384 | { "imulS", Gv, Ev, Ib }, |
385 | { "insb", Yb, indirDX }, | |
386 | { "insS", Yv, indirDX }, | |
387 | { "outsb", indirDX, Xb }, | |
388 | { "outsS", indirDX, Xv }, | |
389 | /* 70 */ | |
03db5a93 | 390 | { "jo", Jb }, |
5d0734a7 | 391 | { "jno", Jb }, |
03db5a93 | 392 | { "jb", Jb }, |
5d0734a7 | 393 | { "jae", Jb }, |
03db5a93 | 394 | { "je", Jb }, |
5d0734a7 JK |
395 | { "jne", Jb }, |
396 | { "jbe", Jb }, | |
03db5a93 | 397 | { "ja", Jb }, |
5d0734a7 | 398 | /* 78 */ |
03db5a93 | 399 | { "js", Jb }, |
5d0734a7 | 400 | { "jns", Jb }, |
03db5a93 | 401 | { "jp", Jb }, |
5d0734a7 | 402 | { "jnp", Jb }, |
03db5a93 | 403 | { "jl", Jb }, |
5d0734a7 JK |
404 | { "jnl", Jb }, |
405 | { "jle", Jb }, | |
03db5a93 | 406 | { "jg", Jb }, |
5d0734a7 JK |
407 | /* 80 */ |
408 | { GRP1b }, | |
409 | { GRP1S }, | |
410 | { "(bad)" }, | |
411 | { GRP1Ss }, | |
412 | { "testb", Eb, Gb }, | |
413 | { "testS", Ev, Gv }, | |
414 | { "xchgb", Eb, Gb }, | |
415 | { "xchgS", Ev, Gv }, | |
416 | /* 88 */ | |
417 | { "movb", Eb, Gb }, | |
418 | { "movS", Ev, Gv }, | |
419 | { "movb", Gb, Eb }, | |
420 | { "movS", Gv, Ev }, | |
421 | { "movw", Ew, Sw }, | |
422 | { "leaS", Gv, M }, | |
423 | { "movw", Sw, Ew }, | |
424 | { "popS", Ev }, | |
425 | /* 90 */ | |
426 | { "nop" }, | |
427 | { "xchgS", eCX, eAX }, | |
428 | { "xchgS", eDX, eAX }, | |
429 | { "xchgS", eBX, eAX }, | |
430 | { "xchgS", eSP, eAX }, | |
431 | { "xchgS", eBP, eAX }, | |
432 | { "xchgS", eSI, eAX }, | |
433 | { "xchgS", eDI, eAX }, | |
434 | /* 98 */ | |
eedca9da ILT |
435 | { "cWtS" }, |
436 | { "cStd" }, | |
5d0734a7 JK |
437 | { "lcall", Ap }, |
438 | { "(bad)" }, /* fwait */ | |
439 | { "pushf" }, | |
440 | { "popf" }, | |
441 | { "sahf" }, | |
442 | { "lahf" }, | |
443 | /* a0 */ | |
444 | { "movb", AL, Ob }, | |
445 | { "movS", eAX, Ov }, | |
446 | { "movb", Ob, AL }, | |
447 | { "movS", Ov, eAX }, | |
448 | { "movsb", Yb, Xb }, | |
449 | { "movsS", Yv, Xv }, | |
450 | { "cmpsb", Yb, Xb }, | |
451 | { "cmpsS", Yv, Xv }, | |
452 | /* a8 */ | |
453 | { "testb", AL, Ib }, | |
454 | { "testS", eAX, Iv }, | |
455 | { "stosb", Yb, AL }, | |
456 | { "stosS", Yv, eAX }, | |
457 | { "lodsb", AL, Xb }, | |
458 | { "lodsS", eAX, Xv }, | |
a279b1f5 JK |
459 | { "scasb", AL, Yb }, |
460 | { "scasS", eAX, Yv }, | |
5d0734a7 JK |
461 | /* b0 */ |
462 | { "movb", AL, Ib }, | |
463 | { "movb", CL, Ib }, | |
464 | { "movb", DL, Ib }, | |
465 | { "movb", BL, Ib }, | |
466 | { "movb", AH, Ib }, | |
467 | { "movb", CH, Ib }, | |
468 | { "movb", DH, Ib }, | |
469 | { "movb", BH, Ib }, | |
470 | /* b8 */ | |
471 | { "movS", eAX, Iv }, | |
472 | { "movS", eCX, Iv }, | |
473 | { "movS", eDX, Iv }, | |
474 | { "movS", eBX, Iv }, | |
475 | { "movS", eSP, Iv }, | |
476 | { "movS", eBP, Iv }, | |
477 | { "movS", eSI, Iv }, | |
478 | { "movS", eDI, Iv }, | |
479 | /* c0 */ | |
480 | { GRP2b }, | |
481 | { GRP2S }, | |
482 | { "ret", Iw }, | |
483 | { "ret" }, | |
484 | { "lesS", Gv, Mp }, | |
485 | { "ldsS", Gv, Mp }, | |
486 | { "movb", Eb, Ib }, | |
487 | { "movS", Ev, Iv }, | |
488 | /* c8 */ | |
489 | { "enter", Iw, Ib }, | |
490 | { "leave" }, | |
491 | { "lret", Iw }, | |
492 | { "lret" }, | |
493 | { "int3" }, | |
494 | { "int", Ib }, | |
495 | { "into" }, | |
496 | { "iret" }, | |
497 | /* d0 */ | |
498 | { GRP2b_one }, | |
499 | { GRP2S_one }, | |
500 | { GRP2b_cl }, | |
501 | { GRP2S_cl }, | |
502 | { "aam", Ib }, | |
503 | { "aad", Ib }, | |
504 | { "(bad)" }, | |
505 | { "xlat" }, | |
506 | /* d8 */ | |
507 | { FLOAT }, | |
508 | { FLOAT }, | |
509 | { FLOAT }, | |
510 | { FLOAT }, | |
511 | { FLOAT }, | |
512 | { FLOAT }, | |
513 | { FLOAT }, | |
514 | { FLOAT }, | |
515 | /* e0 */ | |
516 | { "loopne", Jb }, | |
517 | { "loope", Jb }, | |
518 | { "loop", Jb }, | |
519 | { "jCcxz", Jb }, | |
520 | { "inb", AL, Ib }, | |
521 | { "inS", eAX, Ib }, | |
522 | { "outb", Ib, AL }, | |
523 | { "outS", Ib, eAX }, | |
524 | /* e8 */ | |
525 | { "call", Av }, | |
526 | { "jmp", Jv }, | |
527 | { "ljmp", Ap }, | |
528 | { "jmp", Jb }, | |
529 | { "inb", AL, indirDX }, | |
530 | { "inS", eAX, indirDX }, | |
531 | { "outb", indirDX, AL }, | |
532 | { "outS", indirDX, eAX }, | |
533 | /* f0 */ | |
534 | { "(bad)" }, /* lock prefix */ | |
535 | { "(bad)" }, | |
536 | { "(bad)" }, /* repne */ | |
537 | { "(bad)" }, /* repz */ | |
538 | { "hlt" }, | |
539 | { "cmc" }, | |
540 | { GRP3b }, | |
541 | { GRP3S }, | |
542 | /* f8 */ | |
543 | { "clc" }, | |
544 | { "stc" }, | |
545 | { "cli" }, | |
546 | { "sti" }, | |
547 | { "cld" }, | |
548 | { "std" }, | |
549 | { GRP4 }, | |
550 | { GRP5 }, | |
551 | }; | |
552 | ||
be0c8b05 | 553 | static struct dis386 dis386_twobyte[] = { |
5d0734a7 JK |
554 | /* 00 */ |
555 | { GRP6 }, | |
556 | { GRP7 }, | |
557 | { "larS", Gv, Ew }, | |
558 | { "lslS", Gv, Ew }, | |
559 | { "(bad)" }, | |
560 | { "(bad)" }, | |
561 | { "clts" }, | |
562 | { "(bad)" }, | |
563 | /* 08 */ | |
564 | { "invd" }, | |
565 | { "wbinvd" }, | |
1d935cf6 | 566 | { "(bad)" }, { "ud2a" }, |
5d0734a7 JK |
567 | { "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" }, |
568 | /* 10 */ | |
569 | { "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" }, | |
570 | { "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" }, | |
571 | /* 18 */ | |
572 | { "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" }, | |
573 | { "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" }, | |
574 | /* 20 */ | |
575 | /* these are all backward in appendix A of the intel book */ | |
576 | { "movl", Rd, Cd }, | |
577 | { "movl", Rd, Dd }, | |
578 | { "movl", Cd, Rd }, | |
579 | { "movl", Dd, Rd }, | |
580 | { "movl", Rd, Td }, | |
581 | { "(bad)" }, | |
582 | { "movl", Td, Rd }, | |
583 | { "(bad)" }, | |
584 | /* 28 */ | |
585 | { "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" }, | |
586 | { "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" }, | |
587 | /* 30 */ | |
1d935cf6 | 588 | { "wrmsr" }, { "rdtsc" }, { "rdmsr" }, { "rdpmc" }, |
5d0734a7 JK |
589 | { "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" }, |
590 | /* 38 */ | |
591 | { "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" }, | |
592 | { "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" }, | |
593 | /* 40 */ | |
1d935cf6 MM |
594 | { "cmovo", Gv,Ev }, { "cmovno", Gv,Ev }, { "cmovb", Gv,Ev }, { "cmovae", Gv,Ev }, |
595 | { "cmove", Gv,Ev }, { "cmovne", Gv,Ev }, { "cmovbe", Gv,Ev }, { "cmova", Gv,Ev }, | |
5d0734a7 | 596 | /* 48 */ |
1d935cf6 MM |
597 | { "cmovs", Gv,Ev }, { "cmovns", Gv,Ev }, { "cmovp", Gv,Ev }, { "cmovnp", Gv,Ev }, |
598 | { "cmovl", Gv,Ev }, { "cmovge", Gv,Ev }, { "cmovle", Gv,Ev }, { "cmovg", Gv,Ev }, | |
5d0734a7 JK |
599 | /* 50 */ |
600 | { "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" }, | |
601 | { "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" }, | |
602 | /* 58 */ | |
603 | { "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" }, | |
604 | { "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" }, | |
605 | /* 60 */ | |
eedca9da ILT |
606 | { "punpcklbw", MX, EM }, |
607 | { "punpcklwd", MX, EM }, | |
608 | { "punpckldq", MX, EM }, | |
609 | { "packsswb", MX, EM }, | |
610 | { "pcmpgtb", MX, EM }, | |
611 | { "pcmpgtw", MX, EM }, | |
612 | { "pcmpgtd", MX, EM }, | |
613 | { "packuswb", MX, EM }, | |
5d0734a7 | 614 | /* 68 */ |
eedca9da ILT |
615 | { "punpckhbw", MX, EM }, |
616 | { "punpckhwd", MX, EM }, | |
617 | { "punpckhdq", MX, EM }, | |
618 | { "packssdw", MX, EM }, | |
619 | { "(bad)" }, { "(bad)" }, | |
620 | { "movd", MX, Ev }, | |
621 | { "movq", MX, EM }, | |
5d0734a7 | 622 | /* 70 */ |
eedca9da ILT |
623 | { "(bad)" }, |
624 | { GRP10 }, | |
625 | { GRP11 }, | |
626 | { GRP12 }, | |
627 | { "pcmpeqb", MX, EM }, | |
628 | { "pcmpeqw", MX, EM }, | |
629 | { "pcmpeqd", MX, EM }, | |
630 | { "emms" }, | |
5d0734a7 JK |
631 | /* 78 */ |
632 | { "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" }, | |
eedca9da ILT |
633 | { "(bad)" }, { "(bad)" }, |
634 | { "movd", Ev, MX }, | |
635 | { "movq", EM, MX }, | |
5d0734a7 JK |
636 | /* 80 */ |
637 | { "jo", Jv }, | |
638 | { "jno", Jv }, | |
639 | { "jb", Jv }, | |
640 | { "jae", Jv }, | |
641 | { "je", Jv }, | |
642 | { "jne", Jv }, | |
643 | { "jbe", Jv }, | |
644 | { "ja", Jv }, | |
645 | /* 88 */ | |
646 | { "js", Jv }, | |
647 | { "jns", Jv }, | |
648 | { "jp", Jv }, | |
649 | { "jnp", Jv }, | |
650 | { "jl", Jv }, | |
651 | { "jge", Jv }, | |
652 | { "jle", Jv }, | |
653 | { "jg", Jv }, | |
654 | /* 90 */ | |
655 | { "seto", Eb }, | |
656 | { "setno", Eb }, | |
657 | { "setb", Eb }, | |
658 | { "setae", Eb }, | |
659 | { "sete", Eb }, | |
660 | { "setne", Eb }, | |
661 | { "setbe", Eb }, | |
662 | { "seta", Eb }, | |
663 | /* 98 */ | |
664 | { "sets", Eb }, | |
665 | { "setns", Eb }, | |
666 | { "setp", Eb }, | |
667 | { "setnp", Eb }, | |
668 | { "setl", Eb }, | |
669 | { "setge", Eb }, | |
670 | { "setle", Eb }, | |
671 | { "setg", Eb }, | |
672 | /* a0 */ | |
eedca9da ILT |
673 | { "pushS", fs }, |
674 | { "popS", fs }, | |
726257a8 | 675 | { "cpuid" }, |
5d0734a7 JK |
676 | { "btS", Ev, Gv }, |
677 | { "shldS", Ev, Gv, Ib }, | |
678 | { "shldS", Ev, Gv, CL }, | |
679 | { "(bad)" }, | |
680 | { "(bad)" }, | |
681 | /* a8 */ | |
eedca9da ILT |
682 | { "pushS", gs }, |
683 | { "popS", gs }, | |
726257a8 | 684 | { "rsm" }, |
5d0734a7 JK |
685 | { "btsS", Ev, Gv }, |
686 | { "shrdS", Ev, Gv, Ib }, | |
687 | { "shrdS", Ev, Gv, CL }, | |
688 | { "(bad)" }, | |
689 | { "imulS", Gv, Ev }, | |
690 | /* b0 */ | |
691 | { "cmpxchgb", Eb, Gb }, | |
692 | { "cmpxchgS", Ev, Gv }, | |
693 | { "lssS", Gv, Mp }, /* 386 lists only Mp */ | |
694 | { "btrS", Ev, Gv }, | |
695 | { "lfsS", Gv, Mp }, /* 386 lists only Mp */ | |
696 | { "lgsS", Gv, Mp }, /* 386 lists only Mp */ | |
697 | { "movzbS", Gv, Eb }, | |
698 | { "movzwS", Gv, Ew }, | |
699 | /* b8 */ | |
1d935cf6 | 700 | { "ud2b" }, |
5d0734a7 JK |
701 | { "(bad)" }, |
702 | { GRP8 }, | |
703 | { "btcS", Ev, Gv }, | |
704 | { "bsfS", Gv, Ev }, | |
705 | { "bsrS", Gv, Ev }, | |
706 | { "movsbS", Gv, Eb }, | |
707 | { "movswS", Gv, Ew }, | |
708 | /* c0 */ | |
709 | { "xaddb", Eb, Gb }, | |
710 | { "xaddS", Ev, Gv }, | |
726257a8 KR |
711 | { "(bad)" }, |
712 | { "(bad)" }, | |
713 | { "(bad)" }, | |
714 | { "(bad)" }, | |
715 | { "(bad)" }, | |
716 | { GRP9 }, | |
5d0734a7 JK |
717 | /* c8 */ |
718 | { "bswap", eAX }, | |
719 | { "bswap", eCX }, | |
720 | { "bswap", eDX }, | |
721 | { "bswap", eBX }, | |
722 | { "bswap", eSP }, | |
723 | { "bswap", eBP }, | |
724 | { "bswap", eSI }, | |
725 | { "bswap", eDI }, | |
726 | /* d0 */ | |
eedca9da ILT |
727 | { "(bad)" }, |
728 | { "psrlw", MX, EM }, | |
729 | { "psrld", MX, EM }, | |
730 | { "psrlq", MX, EM }, | |
731 | { "(bad)" }, | |
732 | { "pmullw", MX, EM }, | |
733 | { "(bad)" }, { "(bad)" }, | |
5d0734a7 | 734 | /* d8 */ |
eedca9da ILT |
735 | { "psubusb", MX, EM }, |
736 | { "psubusw", MX, EM }, | |
737 | { "(bad)" }, | |
738 | { "pand", MX, EM }, | |
739 | { "paddusb", MX, EM }, | |
740 | { "paddusw", MX, EM }, | |
741 | { "(bad)" }, | |
742 | { "pandn", MX, EM }, | |
5d0734a7 | 743 | /* e0 */ |
eedca9da ILT |
744 | { "(bad)" }, |
745 | { "psraw", MX, EM }, | |
746 | { "psrad", MX, EM }, | |
747 | { "(bad)" }, | |
748 | { "(bad)" }, | |
749 | { "pmulhw", MX, EM }, | |
750 | { "(bad)" }, { "(bad)" }, | |
5d0734a7 | 751 | /* e8 */ |
eedca9da ILT |
752 | { "psubsb", MX, EM }, |
753 | { "psubsw", MX, EM }, | |
754 | { "(bad)" }, | |
755 | { "por", MX, EM }, | |
756 | { "paddsb", MX, EM }, | |
757 | { "paddsw", MX, EM }, | |
758 | { "(bad)" }, | |
759 | { "pxor", MX, EM }, | |
5d0734a7 | 760 | /* f0 */ |
eedca9da ILT |
761 | { "(bad)" }, |
762 | { "psllw", MX, EM }, | |
763 | { "pslld", MX, EM }, | |
764 | { "psllq", MX, EM }, | |
765 | { "(bad)" }, | |
766 | { "pmaddwd", MX, EM }, | |
767 | { "(bad)" }, { "(bad)" }, | |
5d0734a7 | 768 | /* f8 */ |
eedca9da ILT |
769 | { "psubb", MX, EM }, |
770 | { "psubw", MX, EM }, | |
771 | { "psubd", MX, EM }, | |
772 | { "(bad)" }, | |
773 | { "paddb", MX, EM }, | |
774 | { "paddw", MX, EM }, | |
775 | { "paddd", MX, EM }, | |
776 | { "(bad)" } | |
5d0734a7 JK |
777 | }; |
778 | ||
03db5a93 ILT |
779 | static const unsigned char onebyte_has_modrm[256] = { |
780 | 1,1,1,1,0,0,0,0,1,1,1,1,0,0,0,0, | |
781 | 1,1,1,1,0,0,0,0,1,1,1,1,0,0,0,0, | |
782 | 1,1,1,1,0,0,0,0,1,1,1,1,0,0,0,0, | |
783 | 1,1,1,1,0,0,0,0,1,1,1,1,0,0,0,0, | |
784 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
785 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
786 | 0,0,1,1,0,0,0,0,0,1,0,1,0,0,0,0, | |
787 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
788 | 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, | |
789 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
790 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
791 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
792 | 1,1,0,0,1,1,1,1,0,0,0,0,0,0,0,0, | |
793 | 1,1,1,1,0,0,0,0,1,1,1,1,1,1,1,1, | |
794 | 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, | |
795 | 0,0,0,0,0,0,1,1,0,0,0,0,0,0,1,1 | |
796 | }; | |
797 | ||
798 | static const unsigned char twobyte_has_modrm[256] = { | |
eedca9da ILT |
799 | /* 00 */ 1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0, /* 0f */ |
800 | /* 10 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 1f */ | |
801 | /* 20 */ 1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0, /* 2f */ | |
802 | /* 30 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 3f */ | |
803 | /* 40 */ 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, /* 4f */ | |
804 | /* 50 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 5f */ | |
805 | /* 60 */ 1,1,1,1,1,1,1,1,1,1,1,1,0,0,1,1, /* 6f */ | |
806 | /* 70 */ 0,1,1,1,1,1,1,0,0,0,0,0,0,0,1,1, /* 7f */ | |
807 | /* 80 */ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, /* 8f */ | |
808 | /* 90 */ 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, /* 9f */ | |
809 | /* a0 */ 0,0,0,1,1,1,1,1,0,0,0,1,1,1,1,1, /* af */ | |
810 | /* b0 */ 1,1,1,1,1,1,1,1,0,0,1,1,1,1,1,1, /* bf */ | |
811 | /* c0 */ 1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0, /* cf */ | |
812 | /* d0 */ 0,1,1,1,0,1,0,0,1,1,1,0,1,1,0,1, /* df */ | |
813 | /* e0 */ 0,1,1,0,0,1,0,0,1,1,0,1,1,1,0,1, /* ef */ | |
814 | /* f0 */ 0,1,1,1,0,1,0,0,1,1,1,0,1,1,1,0 /* ff */ | |
03db5a93 ILT |
815 | }; |
816 | ||
5d0734a7 JK |
817 | static char obuf[100]; |
818 | static char *obufp; | |
819 | static char scratchbuf[100]; | |
820 | static unsigned char *start_codep; | |
821 | static unsigned char *codep; | |
822 | static disassemble_info *the_info; | |
823 | static int mod; | |
824 | static int rm; | |
825 | static int reg; | |
be0c8b05 | 826 | static void oappend PARAMS ((char *s)); |
5d0734a7 JK |
827 | |
828 | static char *names32[]={ | |
829 | "%eax","%ecx","%edx","%ebx", "%esp","%ebp","%esi","%edi", | |
830 | }; | |
831 | static char *names16[] = { | |
832 | "%ax","%cx","%dx","%bx","%sp","%bp","%si","%di", | |
833 | }; | |
834 | static char *names8[] = { | |
835 | "%al","%cl","%dl","%bl","%ah","%ch","%dh","%bh", | |
836 | }; | |
837 | static char *names_seg[] = { | |
838 | "%es","%cs","%ss","%ds","%fs","%gs","%?","%?", | |
839 | }; | |
be0c8b05 SG |
840 | static char *index16[] = { |
841 | "bx+si","bx+di","bp+si","bp+di","si","di","bp","bx" | |
842 | }; | |
5d0734a7 | 843 | |
be0c8b05 | 844 | static struct dis386 grps[][8] = { |
5d0734a7 JK |
845 | /* GRP1b */ |
846 | { | |
847 | { "addb", Eb, Ib }, | |
848 | { "orb", Eb, Ib }, | |
849 | { "adcb", Eb, Ib }, | |
850 | { "sbbb", Eb, Ib }, | |
851 | { "andb", Eb, Ib }, | |
852 | { "subb", Eb, Ib }, | |
853 | { "xorb", Eb, Ib }, | |
854 | { "cmpb", Eb, Ib } | |
855 | }, | |
856 | /* GRP1S */ | |
857 | { | |
858 | { "addS", Ev, Iv }, | |
859 | { "orS", Ev, Iv }, | |
860 | { "adcS", Ev, Iv }, | |
861 | { "sbbS", Ev, Iv }, | |
862 | { "andS", Ev, Iv }, | |
863 | { "subS", Ev, Iv }, | |
864 | { "xorS", Ev, Iv }, | |
865 | { "cmpS", Ev, Iv } | |
866 | }, | |
867 | /* GRP1Ss */ | |
868 | { | |
869 | { "addS", Ev, sIb }, | |
870 | { "orS", Ev, sIb }, | |
871 | { "adcS", Ev, sIb }, | |
872 | { "sbbS", Ev, sIb }, | |
873 | { "andS", Ev, sIb }, | |
874 | { "subS", Ev, sIb }, | |
875 | { "xorS", Ev, sIb }, | |
876 | { "cmpS", Ev, sIb } | |
877 | }, | |
878 | /* GRP2b */ | |
879 | { | |
880 | { "rolb", Eb, Ib }, | |
881 | { "rorb", Eb, Ib }, | |
882 | { "rclb", Eb, Ib }, | |
883 | { "rcrb", Eb, Ib }, | |
884 | { "shlb", Eb, Ib }, | |
885 | { "shrb", Eb, Ib }, | |
886 | { "(bad)" }, | |
887 | { "sarb", Eb, Ib }, | |
888 | }, | |
889 | /* GRP2S */ | |
890 | { | |
891 | { "rolS", Ev, Ib }, | |
892 | { "rorS", Ev, Ib }, | |
893 | { "rclS", Ev, Ib }, | |
894 | { "rcrS", Ev, Ib }, | |
895 | { "shlS", Ev, Ib }, | |
896 | { "shrS", Ev, Ib }, | |
897 | { "(bad)" }, | |
898 | { "sarS", Ev, Ib }, | |
899 | }, | |
900 | /* GRP2b_one */ | |
901 | { | |
902 | { "rolb", Eb }, | |
903 | { "rorb", Eb }, | |
904 | { "rclb", Eb }, | |
905 | { "rcrb", Eb }, | |
906 | { "shlb", Eb }, | |
907 | { "shrb", Eb }, | |
908 | { "(bad)" }, | |
909 | { "sarb", Eb }, | |
910 | }, | |
911 | /* GRP2S_one */ | |
912 | { | |
913 | { "rolS", Ev }, | |
914 | { "rorS", Ev }, | |
915 | { "rclS", Ev }, | |
916 | { "rcrS", Ev }, | |
917 | { "shlS", Ev }, | |
918 | { "shrS", Ev }, | |
919 | { "(bad)" }, | |
920 | { "sarS", Ev }, | |
921 | }, | |
922 | /* GRP2b_cl */ | |
923 | { | |
924 | { "rolb", Eb, CL }, | |
925 | { "rorb", Eb, CL }, | |
926 | { "rclb", Eb, CL }, | |
927 | { "rcrb", Eb, CL }, | |
928 | { "shlb", Eb, CL }, | |
929 | { "shrb", Eb, CL }, | |
930 | { "(bad)" }, | |
931 | { "sarb", Eb, CL }, | |
932 | }, | |
933 | /* GRP2S_cl */ | |
934 | { | |
935 | { "rolS", Ev, CL }, | |
936 | { "rorS", Ev, CL }, | |
937 | { "rclS", Ev, CL }, | |
938 | { "rcrS", Ev, CL }, | |
939 | { "shlS", Ev, CL }, | |
940 | { "shrS", Ev, CL }, | |
941 | { "(bad)" }, | |
942 | { "sarS", Ev, CL } | |
943 | }, | |
944 | /* GRP3b */ | |
945 | { | |
946 | { "testb", Eb, Ib }, | |
947 | { "(bad)", Eb }, | |
948 | { "notb", Eb }, | |
949 | { "negb", Eb }, | |
950 | { "mulb", AL, Eb }, | |
951 | { "imulb", AL, Eb }, | |
952 | { "divb", AL, Eb }, | |
953 | { "idivb", AL, Eb } | |
954 | }, | |
955 | /* GRP3S */ | |
956 | { | |
957 | { "testS", Ev, Iv }, | |
958 | { "(bad)" }, | |
959 | { "notS", Ev }, | |
960 | { "negS", Ev }, | |
961 | { "mulS", eAX, Ev }, | |
962 | { "imulS", eAX, Ev }, | |
963 | { "divS", eAX, Ev }, | |
964 | { "idivS", eAX, Ev }, | |
965 | }, | |
966 | /* GRP4 */ | |
967 | { | |
968 | { "incb", Eb }, | |
969 | { "decb", Eb }, | |
970 | { "(bad)" }, | |
971 | { "(bad)" }, | |
972 | { "(bad)" }, | |
973 | { "(bad)" }, | |
974 | { "(bad)" }, | |
975 | { "(bad)" }, | |
976 | }, | |
977 | /* GRP5 */ | |
978 | { | |
979 | { "incS", Ev }, | |
980 | { "decS", Ev }, | |
981 | { "call", indirEv }, | |
982 | { "lcall", indirEv }, | |
983 | { "jmp", indirEv }, | |
984 | { "ljmp", indirEv }, | |
985 | { "pushS", Ev }, | |
986 | { "(bad)" }, | |
987 | }, | |
988 | /* GRP6 */ | |
989 | { | |
990 | { "sldt", Ew }, | |
991 | { "str", Ew }, | |
992 | { "lldt", Ew }, | |
993 | { "ltr", Ew }, | |
994 | { "verr", Ew }, | |
995 | { "verw", Ew }, | |
996 | { "(bad)" }, | |
997 | { "(bad)" } | |
998 | }, | |
999 | /* GRP7 */ | |
1000 | { | |
1001 | { "sgdt", Ew }, | |
1002 | { "sidt", Ew }, | |
1003 | { "lgdt", Ew }, | |
1004 | { "lidt", Ew }, | |
1005 | { "smsw", Ew }, | |
1006 | { "(bad)" }, | |
1007 | { "lmsw", Ew }, | |
1008 | { "invlpg", Ew }, | |
1009 | }, | |
1010 | /* GRP8 */ | |
1011 | { | |
1012 | { "(bad)" }, | |
1013 | { "(bad)" }, | |
1014 | { "(bad)" }, | |
1015 | { "(bad)" }, | |
1016 | { "btS", Ev, Ib }, | |
1017 | { "btsS", Ev, Ib }, | |
1018 | { "btrS", Ev, Ib }, | |
1019 | { "btcS", Ev, Ib }, | |
726257a8 KR |
1020 | }, |
1021 | /* GRP9 */ | |
1022 | { | |
1023 | { "(bad)" }, | |
1d935cf6 | 1024 | { "cmpxchg8b", Ev }, |
726257a8 KR |
1025 | { "(bad)" }, |
1026 | { "(bad)" }, | |
1027 | { "(bad)" }, | |
1028 | { "(bad)" }, | |
1029 | { "(bad)" }, | |
1030 | { "(bad)" }, | |
eedca9da ILT |
1031 | }, |
1032 | /* GRP10 */ | |
1033 | { | |
1034 | { "(bad)" }, | |
1035 | { "(bad)" }, | |
1036 | { "psrlw", MS, Ib }, | |
1037 | { "(bad)" }, | |
1038 | { "psraw", MS, Ib }, | |
1039 | { "(bad)" }, | |
1040 | { "psllw", MS, Ib }, | |
1041 | { "(bad)" }, | |
1042 | }, | |
1043 | /* GRP11 */ | |
1044 | { | |
1045 | { "(bad)" }, | |
1046 | { "(bad)" }, | |
1047 | { "psrld", MS, Ib }, | |
1048 | { "(bad)" }, | |
1049 | { "psrad", MS, Ib }, | |
1050 | { "(bad)" }, | |
1051 | { "pslld", MS, Ib }, | |
1052 | { "(bad)" }, | |
1053 | }, | |
1054 | /* GRP12 */ | |
1055 | { | |
1056 | { "(bad)" }, | |
1057 | { "(bad)" }, | |
1058 | { "psrlq", MS, Ib }, | |
1059 | { "(bad)" }, | |
1060 | { "(bad)" }, | |
1061 | { "(bad)" }, | |
1062 | { "psllq", MS, Ib }, | |
1063 | { "(bad)" }, | |
5d0734a7 JK |
1064 | } |
1065 | }; | |
1066 | ||
1067 | #define PREFIX_REPZ 1 | |
1068 | #define PREFIX_REPNZ 2 | |
1069 | #define PREFIX_LOCK 4 | |
1070 | #define PREFIX_CS 8 | |
1071 | #define PREFIX_SS 0x10 | |
1072 | #define PREFIX_DS 0x20 | |
1073 | #define PREFIX_ES 0x40 | |
1074 | #define PREFIX_FS 0x80 | |
1075 | #define PREFIX_GS 0x100 | |
1076 | #define PREFIX_DATA 0x200 | |
1077 | #define PREFIX_ADR 0x400 | |
1078 | #define PREFIX_FWAIT 0x800 | |
1079 | ||
1080 | static int prefixes; | |
1081 | ||
1082 | static void | |
1083 | ckprefix () | |
1084 | { | |
1085 | prefixes = 0; | |
1086 | while (1) | |
1087 | { | |
1088 | FETCH_DATA (the_info, codep + 1); | |
1089 | switch (*codep) | |
1090 | { | |
1091 | case 0xf3: | |
1092 | prefixes |= PREFIX_REPZ; | |
1093 | break; | |
1094 | case 0xf2: | |
1095 | prefixes |= PREFIX_REPNZ; | |
1096 | break; | |
1097 | case 0xf0: | |
1098 | prefixes |= PREFIX_LOCK; | |
1099 | break; | |
1100 | case 0x2e: | |
1101 | prefixes |= PREFIX_CS; | |
1102 | break; | |
1103 | case 0x36: | |
1104 | prefixes |= PREFIX_SS; | |
1105 | break; | |
1106 | case 0x3e: | |
1107 | prefixes |= PREFIX_DS; | |
1108 | break; | |
1109 | case 0x26: | |
1110 | prefixes |= PREFIX_ES; | |
1111 | break; | |
1112 | case 0x64: | |
1113 | prefixes |= PREFIX_FS; | |
1114 | break; | |
1115 | case 0x65: | |
1116 | prefixes |= PREFIX_GS; | |
1117 | break; | |
1118 | case 0x66: | |
1119 | prefixes |= PREFIX_DATA; | |
1120 | break; | |
1121 | case 0x67: | |
1122 | prefixes |= PREFIX_ADR; | |
1123 | break; | |
1124 | case 0x9b: | |
1125 | prefixes |= PREFIX_FWAIT; | |
1126 | break; | |
1127 | default: | |
1128 | return; | |
1129 | } | |
1130 | codep++; | |
1131 | } | |
1132 | } | |
1133 | ||
5d0734a7 JK |
1134 | static char op1out[100], op2out[100], op3out[100]; |
1135 | static int op_address[3], op_ad, op_index[3]; | |
1136 | static int start_pc; | |
1137 | ||
1138 | \f | |
1139 | /* | |
1140 | * On the 386's of 1988, the maximum length of an instruction is 15 bytes. | |
1141 | * (see topic "Redundant prefixes" in the "Differences from 8086" | |
1142 | * section of the "Virtual 8086 Mode" chapter.) | |
1143 | * 'pc' should be the address of this instruction, it will | |
1144 | * be used to print the target address if this is a relative jump or call | |
1145 | * The function returns the length of this instruction in bytes. | |
1146 | */ | |
1147 | ||
be0c8b05 SG |
1148 | int print_insn_x86 PARAMS ((bfd_vma pc, disassemble_info *info, int aflag, |
1149 | int dflag)); | |
5d0734a7 JK |
1150 | int |
1151 | print_insn_i386 (pc, info) | |
1152 | bfd_vma pc; | |
1153 | disassemble_info *info; | |
be0c8b05 | 1154 | { |
d9ad578c | 1155 | if (info->mach == bfd_mach_i386_i386) |
41b96d55 | 1156 | return print_insn_x86 (pc, info, 1, 1); |
d9ad578c | 1157 | else if (info->mach == bfd_mach_i386_i8086) |
41b96d55 | 1158 | return print_insn_x86 (pc, info, 0, 0); |
d9ad578c SG |
1159 | else |
1160 | abort (); | |
be0c8b05 SG |
1161 | } |
1162 | ||
1163 | int | |
1164 | print_insn_x86 (pc, info, aflag, dflag) | |
1165 | bfd_vma pc; | |
1166 | disassemble_info *info; | |
5d0734a7 JK |
1167 | { |
1168 | struct dis386 *dp; | |
1169 | int i; | |
1170 | int enter_instruction; | |
1171 | char *first, *second, *third; | |
1172 | int needcomma; | |
03db5a93 ILT |
1173 | unsigned char need_modrm; |
1174 | ||
726257a8 | 1175 | struct dis_private priv; |
5d0734a7 JK |
1176 | bfd_byte *inbuf = priv.the_buffer; |
1177 | ||
41b96d55 ILT |
1178 | /* The output looks better if we put 5 bytes on a line, since that |
1179 | puts long word instructions on a single line. */ | |
1180 | info->bytes_per_line = 5; | |
1181 | ||
5d0734a7 JK |
1182 | info->private_data = (PTR) &priv; |
1183 | priv.max_fetched = priv.the_buffer; | |
1184 | priv.insn_start = pc; | |
1185 | if (setjmp (priv.bailout) != 0) | |
1186 | /* Error return. */ | |
1187 | return -1; | |
1188 | ||
1189 | obuf[0] = 0; | |
1190 | op1out[0] = 0; | |
1191 | op2out[0] = 0; | |
1192 | op3out[0] = 0; | |
1193 | ||
1194 | op_index[0] = op_index[1] = op_index[2] = -1; | |
1195 | ||
1196 | the_info = info; | |
1197 | start_pc = pc; | |
1198 | start_codep = inbuf; | |
1199 | codep = inbuf; | |
1200 | ||
1201 | ckprefix (); | |
1202 | ||
1203 | FETCH_DATA (info, codep + 1); | |
1204 | if (*codep == 0xc8) | |
1205 | enter_instruction = 1; | |
1206 | else | |
1207 | enter_instruction = 0; | |
1208 | ||
1209 | obufp = obuf; | |
1210 | ||
1211 | if (prefixes & PREFIX_REPZ) | |
1212 | oappend ("repz "); | |
1213 | if (prefixes & PREFIX_REPNZ) | |
1214 | oappend ("repnz "); | |
1215 | if (prefixes & PREFIX_LOCK) | |
1216 | oappend ("lock "); | |
1217 | ||
1218 | if ((prefixes & PREFIX_FWAIT) | |
1219 | && ((*codep < 0xd8) || (*codep > 0xdf))) | |
1220 | { | |
1221 | /* fwait not followed by floating point instruction */ | |
1222 | (*info->fprintf_func) (info->stream, "fwait"); | |
1223 | return (1); | |
1224 | } | |
1225 | ||
5d0734a7 JK |
1226 | if (prefixes & PREFIX_DATA) |
1227 | dflag ^= 1; | |
1228 | ||
1229 | if (prefixes & PREFIX_ADR) | |
1230 | { | |
1231 | aflag ^= 1; | |
eedca9da ILT |
1232 | if (aflag) |
1233 | oappend ("addr32 "); | |
1234 | else | |
1235 | oappend ("addr16 "); | |
5d0734a7 JK |
1236 | } |
1237 | ||
1238 | if (*codep == 0x0f) | |
1239 | { | |
1240 | FETCH_DATA (info, codep + 2); | |
1241 | dp = &dis386_twobyte[*++codep]; | |
03db5a93 | 1242 | need_modrm = twobyte_has_modrm[*codep]; |
5d0734a7 JK |
1243 | } |
1244 | else | |
03db5a93 ILT |
1245 | { |
1246 | dp = &dis386[*codep]; | |
1247 | need_modrm = onebyte_has_modrm[*codep]; | |
1248 | } | |
5d0734a7 | 1249 | codep++; |
5c9b5f58 | 1250 | |
03db5a93 ILT |
1251 | if (need_modrm) |
1252 | { | |
1253 | FETCH_DATA (info, codep + 1); | |
1254 | mod = (*codep >> 6) & 3; | |
1255 | reg = (*codep >> 3) & 7; | |
1256 | rm = *codep & 7; | |
1257 | } | |
5c9b5f58 | 1258 | |
5d0734a7 JK |
1259 | if (dp->name == NULL && dp->bytemode1 == FLOATCODE) |
1260 | { | |
be0c8b05 | 1261 | dofloat (aflag, dflag); |
5d0734a7 JK |
1262 | } |
1263 | else | |
1264 | { | |
1265 | if (dp->name == NULL) | |
1266 | dp = &grps[dp->bytemode1][reg]; | |
1267 | ||
be0c8b05 | 1268 | putop (dp->name, aflag, dflag); |
5d0734a7 JK |
1269 | |
1270 | obufp = op1out; | |
1271 | op_ad = 2; | |
1272 | if (dp->op1) | |
be0c8b05 | 1273 | (*dp->op1)(dp->bytemode1, aflag, dflag); |
5d0734a7 JK |
1274 | |
1275 | obufp = op2out; | |
1276 | op_ad = 1; | |
1277 | if (dp->op2) | |
be0c8b05 | 1278 | (*dp->op2)(dp->bytemode2, aflag, dflag); |
5d0734a7 JK |
1279 | |
1280 | obufp = op3out; | |
1281 | op_ad = 0; | |
1282 | if (dp->op3) | |
be0c8b05 | 1283 | (*dp->op3)(dp->bytemode3, aflag, dflag); |
5d0734a7 JK |
1284 | } |
1285 | ||
1286 | obufp = obuf + strlen (obuf); | |
1287 | for (i = strlen (obuf); i < 6; i++) | |
1288 | oappend (" "); | |
1289 | oappend (" "); | |
1290 | (*info->fprintf_func) (info->stream, "%s", obuf); | |
1291 | ||
1292 | /* enter instruction is printed with operands in the | |
1293 | * same order as the intel book; everything else | |
1294 | * is printed in reverse order | |
1295 | */ | |
1296 | if (enter_instruction) | |
1297 | { | |
1298 | first = op1out; | |
1299 | second = op2out; | |
1300 | third = op3out; | |
1301 | op_ad = op_index[0]; | |
1302 | op_index[0] = op_index[2]; | |
1303 | op_index[2] = op_ad; | |
1304 | } | |
1305 | else | |
1306 | { | |
1307 | first = op3out; | |
1308 | second = op2out; | |
1309 | third = op1out; | |
1310 | } | |
1311 | needcomma = 0; | |
1312 | if (*first) | |
1313 | { | |
1314 | if (op_index[0] != -1) | |
a279b1f5 | 1315 | (*info->print_address_func) (op_address[op_index[0]], info); |
5d0734a7 JK |
1316 | else |
1317 | (*info->fprintf_func) (info->stream, "%s", first); | |
1318 | needcomma = 1; | |
1319 | } | |
1320 | if (*second) | |
1321 | { | |
1322 | if (needcomma) | |
1323 | (*info->fprintf_func) (info->stream, ","); | |
1324 | if (op_index[1] != -1) | |
a279b1f5 | 1325 | (*info->print_address_func) (op_address[op_index[1]], info); |
5d0734a7 JK |
1326 | else |
1327 | (*info->fprintf_func) (info->stream, "%s", second); | |
1328 | needcomma = 1; | |
1329 | } | |
1330 | if (*third) | |
1331 | { | |
1332 | if (needcomma) | |
1333 | (*info->fprintf_func) (info->stream, ","); | |
1334 | if (op_index[2] != -1) | |
a279b1f5 | 1335 | (*info->print_address_func) (op_address[op_index[2]], info); |
5d0734a7 JK |
1336 | else |
1337 | (*info->fprintf_func) (info->stream, "%s", third); | |
1338 | } | |
1339 | return (codep - inbuf); | |
1340 | } | |
1341 | ||
be0c8b05 | 1342 | static char *float_mem[] = { |
5d0734a7 JK |
1343 | /* d8 */ |
1344 | "fadds", | |
1345 | "fmuls", | |
1346 | "fcoms", | |
1347 | "fcomps", | |
1348 | "fsubs", | |
1349 | "fsubrs", | |
1350 | "fdivs", | |
1351 | "fdivrs", | |
1352 | /* d9 */ | |
1353 | "flds", | |
1354 | "(bad)", | |
1355 | "fsts", | |
1356 | "fstps", | |
1357 | "fldenv", | |
1358 | "fldcw", | |
1359 | "fNstenv", | |
1360 | "fNstcw", | |
1361 | /* da */ | |
1362 | "fiaddl", | |
1363 | "fimull", | |
1364 | "ficoml", | |
1365 | "ficompl", | |
1366 | "fisubl", | |
1367 | "fisubrl", | |
1368 | "fidivl", | |
1369 | "fidivrl", | |
1370 | /* db */ | |
1371 | "fildl", | |
1372 | "(bad)", | |
1373 | "fistl", | |
1374 | "fistpl", | |
1375 | "(bad)", | |
1376 | "fldt", | |
1377 | "(bad)", | |
1378 | "fstpt", | |
1379 | /* dc */ | |
1380 | "faddl", | |
1381 | "fmull", | |
1382 | "fcoml", | |
1383 | "fcompl", | |
1384 | "fsubl", | |
1385 | "fsubrl", | |
1386 | "fdivl", | |
1387 | "fdivrl", | |
1388 | /* dd */ | |
1389 | "fldl", | |
1390 | "(bad)", | |
1391 | "fstl", | |
1392 | "fstpl", | |
1393 | "frstor", | |
1394 | "(bad)", | |
1395 | "fNsave", | |
1396 | "fNstsw", | |
1397 | /* de */ | |
1398 | "fiadd", | |
1399 | "fimul", | |
1400 | "ficom", | |
1401 | "ficomp", | |
1402 | "fisub", | |
1403 | "fisubr", | |
1404 | "fidiv", | |
1405 | "fidivr", | |
1406 | /* df */ | |
1407 | "fild", | |
1408 | "(bad)", | |
1409 | "fist", | |
1410 | "fistp", | |
1411 | "fbld", | |
1412 | "fildll", | |
1413 | "fbstp", | |
1414 | "fistpll", | |
1415 | }; | |
1416 | ||
1417 | #define ST OP_ST, 0 | |
1418 | #define STi OP_STi, 0 | |
5d0734a7 JK |
1419 | |
1420 | #define FGRPd9_2 NULL, NULL, 0 | |
1421 | #define FGRPd9_4 NULL, NULL, 1 | |
1422 | #define FGRPd9_5 NULL, NULL, 2 | |
1423 | #define FGRPd9_6 NULL, NULL, 3 | |
1424 | #define FGRPd9_7 NULL, NULL, 4 | |
1425 | #define FGRPda_5 NULL, NULL, 5 | |
1426 | #define FGRPdb_4 NULL, NULL, 6 | |
1427 | #define FGRPde_3 NULL, NULL, 7 | |
1428 | #define FGRPdf_4 NULL, NULL, 8 | |
1429 | ||
be0c8b05 | 1430 | static struct dis386 float_reg[][8] = { |
5d0734a7 JK |
1431 | /* d8 */ |
1432 | { | |
1433 | { "fadd", ST, STi }, | |
1434 | { "fmul", ST, STi }, | |
1435 | { "fcom", STi }, | |
1436 | { "fcomp", STi }, | |
1437 | { "fsub", ST, STi }, | |
1438 | { "fsubr", ST, STi }, | |
1439 | { "fdiv", ST, STi }, | |
1440 | { "fdivr", ST, STi }, | |
1441 | }, | |
1442 | /* d9 */ | |
1443 | { | |
1444 | { "fld", STi }, | |
1445 | { "fxch", STi }, | |
1446 | { FGRPd9_2 }, | |
1447 | { "(bad)" }, | |
1448 | { FGRPd9_4 }, | |
1449 | { FGRPd9_5 }, | |
1450 | { FGRPd9_6 }, | |
1451 | { FGRPd9_7 }, | |
1452 | }, | |
1453 | /* da */ | |
1454 | { | |
1d935cf6 MM |
1455 | { "fcmovb", ST, STi }, |
1456 | { "fcmove", ST, STi }, | |
1457 | { "fcmovbe",ST, STi }, | |
1458 | { "fcmovu", ST, STi }, | |
5d0734a7 JK |
1459 | { "(bad)" }, |
1460 | { FGRPda_5 }, | |
1461 | { "(bad)" }, | |
1462 | { "(bad)" }, | |
1463 | }, | |
1464 | /* db */ | |
1465 | { | |
1d935cf6 MM |
1466 | { "fcmovnb",ST, STi }, |
1467 | { "fcmovne",ST, STi }, | |
1468 | { "fcmovnbe",ST, STi }, | |
1469 | { "fcmovnu",ST, STi }, | |
5d0734a7 | 1470 | { FGRPdb_4 }, |
1d935cf6 MM |
1471 | { "fucomi", ST, STi }, |
1472 | { "fcomi", ST, STi }, | |
5d0734a7 JK |
1473 | { "(bad)" }, |
1474 | }, | |
1475 | /* dc */ | |
1476 | { | |
1477 | { "fadd", STi, ST }, | |
1478 | { "fmul", STi, ST }, | |
1479 | { "(bad)" }, | |
1480 | { "(bad)" }, | |
1481 | { "fsub", STi, ST }, | |
1482 | { "fsubr", STi, ST }, | |
1483 | { "fdiv", STi, ST }, | |
1484 | { "fdivr", STi, ST }, | |
1485 | }, | |
1486 | /* dd */ | |
1487 | { | |
1488 | { "ffree", STi }, | |
1489 | { "(bad)" }, | |
1490 | { "fst", STi }, | |
1491 | { "fstp", STi }, | |
1492 | { "fucom", STi }, | |
1493 | { "fucomp", STi }, | |
1494 | { "(bad)" }, | |
1495 | { "(bad)" }, | |
1496 | }, | |
1497 | /* de */ | |
1498 | { | |
1499 | { "faddp", STi, ST }, | |
1500 | { "fmulp", STi, ST }, | |
1501 | { "(bad)" }, | |
1502 | { FGRPde_3 }, | |
1503 | { "fsubp", STi, ST }, | |
1504 | { "fsubrp", STi, ST }, | |
1505 | { "fdivp", STi, ST }, | |
1506 | { "fdivrp", STi, ST }, | |
1507 | }, | |
1508 | /* df */ | |
1509 | { | |
1510 | { "(bad)" }, | |
1511 | { "(bad)" }, | |
1512 | { "(bad)" }, | |
1513 | { "(bad)" }, | |
1514 | { FGRPdf_4 }, | |
1d935cf6 MM |
1515 | { "fucomip",ST, STi }, |
1516 | { "fcomip", ST, STi }, | |
5d0734a7 JK |
1517 | { "(bad)" }, |
1518 | }, | |
1519 | }; | |
1520 | ||
1521 | ||
be0c8b05 | 1522 | static char *fgrps[][8] = { |
5d0734a7 JK |
1523 | /* d9_2 0 */ |
1524 | { | |
1525 | "fnop","(bad)","(bad)","(bad)","(bad)","(bad)","(bad)","(bad)", | |
1526 | }, | |
1527 | ||
1528 | /* d9_4 1 */ | |
1529 | { | |
1530 | "fchs","fabs","(bad)","(bad)","ftst","fxam","(bad)","(bad)", | |
1531 | }, | |
1532 | ||
1533 | /* d9_5 2 */ | |
1534 | { | |
1535 | "fld1","fldl2t","fldl2e","fldpi","fldlg2","fldln2","fldz","(bad)", | |
1536 | }, | |
1537 | ||
1538 | /* d9_6 3 */ | |
1539 | { | |
1540 | "f2xm1","fyl2x","fptan","fpatan","fxtract","fprem1","fdecstp","fincstp", | |
1541 | }, | |
1542 | ||
1543 | /* d9_7 4 */ | |
1544 | { | |
1545 | "fprem","fyl2xp1","fsqrt","fsincos","frndint","fscale","fsin","fcos", | |
1546 | }, | |
1547 | ||
1548 | /* da_5 5 */ | |
1549 | { | |
1550 | "(bad)","fucompp","(bad)","(bad)","(bad)","(bad)","(bad)","(bad)", | |
1551 | }, | |
1552 | ||
1553 | /* db_4 6 */ | |
1554 | { | |
1555 | "feni(287 only)","fdisi(287 only)","fNclex","fNinit", | |
1556 | "fNsetpm(287 only)","(bad)","(bad)","(bad)", | |
1557 | }, | |
1558 | ||
1559 | /* de_3 7 */ | |
1560 | { | |
1561 | "(bad)","fcompp","(bad)","(bad)","(bad)","(bad)","(bad)","(bad)", | |
1562 | }, | |
1563 | ||
1564 | /* df_4 8 */ | |
1565 | { | |
1566 | "fNstsw","(bad)","(bad)","(bad)","(bad)","(bad)","(bad)","(bad)", | |
1567 | }, | |
1568 | }; | |
1569 | ||
1570 | static void | |
be0c8b05 SG |
1571 | dofloat (aflag, dflag) |
1572 | int aflag; | |
1573 | int dflag; | |
5d0734a7 JK |
1574 | { |
1575 | struct dis386 *dp; | |
1576 | unsigned char floatop; | |
1577 | ||
1578 | floatop = codep[-1]; | |
1579 | ||
1580 | if (mod != 3) | |
1581 | { | |
be0c8b05 | 1582 | putop (float_mem[(floatop - 0xd8) * 8 + reg], aflag, dflag); |
5d0734a7 | 1583 | obufp = op1out; |
be0c8b05 | 1584 | OP_E (v_mode, aflag, dflag); |
5d0734a7 JK |
1585 | return; |
1586 | } | |
1587 | codep++; | |
1588 | ||
1589 | dp = &float_reg[floatop - 0xd8][reg]; | |
1590 | if (dp->name == NULL) | |
1591 | { | |
be0c8b05 | 1592 | putop (fgrps[dp->bytemode1][rm], aflag, dflag); |
5d0734a7 JK |
1593 | /* instruction fnstsw is only one with strange arg */ |
1594 | if (floatop == 0xdf | |
1595 | && FETCH_DATA (the_info, codep + 1) | |
1596 | && *codep == 0xe0) | |
1597 | strcpy (op1out, "%eax"); | |
1598 | } | |
1599 | else | |
1600 | { | |
be0c8b05 | 1601 | putop (dp->name, aflag, dflag); |
5d0734a7 JK |
1602 | obufp = op1out; |
1603 | if (dp->op1) | |
be0c8b05 | 1604 | (*dp->op1)(dp->bytemode1, aflag, dflag); |
5d0734a7 JK |
1605 | obufp = op2out; |
1606 | if (dp->op2) | |
be0c8b05 | 1607 | (*dp->op2)(dp->bytemode2, aflag, dflag); |
5d0734a7 JK |
1608 | } |
1609 | } | |
1610 | ||
1611 | /* ARGSUSED */ | |
be0c8b05 SG |
1612 | static int |
1613 | OP_ST (ignore, aflag, dflag) | |
5d0734a7 | 1614 | int ignore; |
be0c8b05 SG |
1615 | int aflag; |
1616 | int dflag; | |
5d0734a7 JK |
1617 | { |
1618 | oappend ("%st"); | |
1619 | return (0); | |
1620 | } | |
1621 | ||
1622 | /* ARGSUSED */ | |
be0c8b05 SG |
1623 | static int |
1624 | OP_STi (ignore, aflag, dflag) | |
5d0734a7 | 1625 | int ignore; |
be0c8b05 SG |
1626 | int aflag; |
1627 | int dflag; | |
5d0734a7 JK |
1628 | { |
1629 | sprintf (scratchbuf, "%%st(%d)", rm); | |
1630 | oappend (scratchbuf); | |
1631 | return (0); | |
1632 | } | |
1633 | ||
1634 | ||
1635 | /* capital letters in template are macros */ | |
1636 | static void | |
be0c8b05 | 1637 | putop (template, aflag, dflag) |
5d0734a7 | 1638 | char *template; |
be0c8b05 SG |
1639 | int aflag; |
1640 | int dflag; | |
5d0734a7 JK |
1641 | { |
1642 | char *p; | |
1643 | ||
1644 | for (p = template; *p; p++) | |
1645 | { | |
1646 | switch (*p) | |
1647 | { | |
1648 | default: | |
1649 | *obufp++ = *p; | |
1650 | break; | |
1651 | case 'C': /* For jcxz/jecxz */ | |
be0c8b05 | 1652 | if (aflag) |
5d0734a7 JK |
1653 | *obufp++ = 'e'; |
1654 | break; | |
1655 | case 'N': | |
1656 | if ((prefixes & PREFIX_FWAIT) == 0) | |
1657 | *obufp++ = 'n'; | |
1658 | break; | |
1659 | case 'S': | |
1660 | /* operand size flag */ | |
1661 | if (dflag) | |
1662 | *obufp++ = 'l'; | |
1663 | else | |
1664 | *obufp++ = 'w'; | |
1665 | break; | |
eedca9da ILT |
1666 | case 'W': |
1667 | /* operand size flag for cwtl, cbtw */ | |
1668 | if (dflag) | |
1669 | *obufp++ = 'w'; | |
1670 | else | |
1671 | *obufp++ = 'b'; | |
1672 | break; | |
5d0734a7 JK |
1673 | } |
1674 | } | |
1675 | *obufp = 0; | |
1676 | } | |
1677 | ||
1678 | static void | |
1679 | oappend (s) | |
1680 | char *s; | |
1681 | { | |
1682 | strcpy (obufp, s); | |
1683 | obufp += strlen (s); | |
1684 | *obufp = 0; | |
1685 | } | |
1686 | ||
1687 | static void | |
1688 | append_prefix () | |
1689 | { | |
1690 | if (prefixes & PREFIX_CS) | |
1691 | oappend ("%cs:"); | |
1692 | if (prefixes & PREFIX_DS) | |
1693 | oappend ("%ds:"); | |
1694 | if (prefixes & PREFIX_SS) | |
1695 | oappend ("%ss:"); | |
1696 | if (prefixes & PREFIX_ES) | |
1697 | oappend ("%es:"); | |
1698 | if (prefixes & PREFIX_FS) | |
1699 | oappend ("%fs:"); | |
1700 | if (prefixes & PREFIX_GS) | |
1701 | oappend ("%gs:"); | |
1702 | } | |
1703 | ||
be0c8b05 SG |
1704 | static int |
1705 | OP_indirE (bytemode, aflag, dflag) | |
5d0734a7 | 1706 | int bytemode; |
be0c8b05 SG |
1707 | int aflag; |
1708 | int dflag; | |
5d0734a7 JK |
1709 | { |
1710 | oappend ("*"); | |
be0c8b05 | 1711 | return OP_E (bytemode, aflag, dflag); |
5d0734a7 JK |
1712 | } |
1713 | ||
be0c8b05 SG |
1714 | static int |
1715 | OP_E (bytemode, aflag, dflag) | |
5d0734a7 | 1716 | int bytemode; |
be0c8b05 SG |
1717 | int aflag; |
1718 | int dflag; | |
5d0734a7 JK |
1719 | { |
1720 | int disp; | |
be0c8b05 | 1721 | |
5d0734a7 JK |
1722 | /* skip mod/rm byte */ |
1723 | codep++; | |
be0c8b05 | 1724 | |
5d0734a7 JK |
1725 | if (mod == 3) |
1726 | { | |
1727 | switch (bytemode) | |
1728 | { | |
1729 | case b_mode: | |
1730 | oappend (names8[rm]); | |
1731 | break; | |
1732 | case w_mode: | |
1733 | oappend (names16[rm]); | |
1734 | break; | |
1735 | case v_mode: | |
1736 | if (dflag) | |
1737 | oappend (names32[rm]); | |
1738 | else | |
1739 | oappend (names16[rm]); | |
1740 | break; | |
1741 | default: | |
1742 | oappend ("<bad dis table>"); | |
1743 | break; | |
1744 | } | |
be0c8b05 | 1745 | return 0; |
5d0734a7 | 1746 | } |
be0c8b05 SG |
1747 | |
1748 | disp = 0; | |
5d0734a7 | 1749 | append_prefix (); |
be0c8b05 SG |
1750 | |
1751 | if (aflag) /* 32 bit address mode */ | |
5d0734a7 | 1752 | { |
be0c8b05 SG |
1753 | int havesib; |
1754 | int havebase; | |
1755 | int base; | |
1756 | int index; | |
1757 | int scale; | |
1758 | ||
1759 | havesib = 0; | |
5d0734a7 | 1760 | havebase = 1; |
be0c8b05 SG |
1761 | base = rm; |
1762 | ||
1763 | if (base == 4) | |
1764 | { | |
1765 | havesib = 1; | |
1766 | FETCH_DATA (the_info, codep + 1); | |
1767 | scale = (*codep >> 6) & 3; | |
1768 | index = (*codep >> 3) & 7; | |
1769 | base = *codep & 7; | |
1770 | codep++; | |
1771 | } | |
1772 | ||
1773 | switch (mod) | |
5d0734a7 | 1774 | { |
be0c8b05 SG |
1775 | case 0: |
1776 | if (base == 5) | |
1777 | { | |
1778 | havebase = 0; | |
1779 | disp = get32 (); | |
1780 | } | |
5d0734a7 | 1781 | break; |
be0c8b05 SG |
1782 | case 1: |
1783 | FETCH_DATA (the_info, codep + 1); | |
1784 | disp = *(char *)codep++; | |
5d0734a7 | 1785 | break; |
be0c8b05 SG |
1786 | case 2: |
1787 | disp = get32 (); | |
5d0734a7 JK |
1788 | break; |
1789 | } | |
be0c8b05 SG |
1790 | |
1791 | if (mod != 0 || base == 5) | |
5d0734a7 | 1792 | { |
be0c8b05 SG |
1793 | sprintf (scratchbuf, "0x%x", disp); |
1794 | oappend (scratchbuf); | |
5d0734a7 | 1795 | } |
be0c8b05 SG |
1796 | |
1797 | if (havebase || (havesib && (index != 4 || scale != 0))) | |
5d0734a7 | 1798 | { |
be0c8b05 SG |
1799 | oappend ("("); |
1800 | if (havebase) | |
1801 | oappend (names32[base]); | |
1802 | if (havesib) | |
5d0734a7 | 1803 | { |
be0c8b05 SG |
1804 | if (index != 4) |
1805 | { | |
1806 | sprintf (scratchbuf, ",%s", names32[index]); | |
1807 | oappend (scratchbuf); | |
1808 | } | |
1809 | sprintf (scratchbuf, ",%d", 1 << scale); | |
5d0734a7 JK |
1810 | oappend (scratchbuf); |
1811 | } | |
be0c8b05 SG |
1812 | oappend (")"); |
1813 | } | |
1814 | } | |
1815 | else | |
1816 | { /* 16 bit address mode */ | |
1817 | switch (mod) | |
1818 | { | |
1819 | case 0: | |
1820 | if (rm == 6) | |
1821 | disp = (short) get16 (); | |
1822 | break; | |
1823 | case 1: | |
1824 | FETCH_DATA (the_info, codep + 1); | |
1825 | disp = *(char *)codep++; | |
1826 | break; | |
1827 | case 2: | |
1828 | disp = (short) get16 (); | |
1829 | break; | |
1830 | } | |
1831 | ||
1832 | if (mod != 0 || rm == 6) | |
1833 | { | |
1834 | sprintf (scratchbuf, "0x%x", disp); | |
5d0734a7 JK |
1835 | oappend (scratchbuf); |
1836 | } | |
be0c8b05 SG |
1837 | |
1838 | if (mod != 0 || rm != 6) | |
1839 | { | |
1840 | oappend ("("); | |
1841 | oappend (index16[rm]); | |
1842 | oappend (")"); | |
1843 | } | |
5d0734a7 | 1844 | } |
be0c8b05 | 1845 | return 0; |
5d0734a7 JK |
1846 | } |
1847 | ||
be0c8b05 SG |
1848 | static int |
1849 | OP_G (bytemode, aflag, dflag) | |
5d0734a7 | 1850 | int bytemode; |
be0c8b05 SG |
1851 | int aflag; |
1852 | int dflag; | |
5d0734a7 JK |
1853 | { |
1854 | switch (bytemode) | |
1855 | { | |
1856 | case b_mode: | |
1857 | oappend (names8[reg]); | |
1858 | break; | |
1859 | case w_mode: | |
1860 | oappend (names16[reg]); | |
1861 | break; | |
1862 | case d_mode: | |
1863 | oappend (names32[reg]); | |
1864 | break; | |
1865 | case v_mode: | |
1866 | if (dflag) | |
1867 | oappend (names32[reg]); | |
1868 | else | |
1869 | oappend (names16[reg]); | |
1870 | break; | |
1871 | default: | |
1872 | oappend ("<internal disassembler error>"); | |
1873 | break; | |
1874 | } | |
1875 | return (0); | |
1876 | } | |
1877 | ||
1878 | static int | |
1879 | get32 () | |
1880 | { | |
1881 | int x = 0; | |
1882 | ||
1883 | FETCH_DATA (the_info, codep + 4); | |
1884 | x = *codep++ & 0xff; | |
1885 | x |= (*codep++ & 0xff) << 8; | |
1886 | x |= (*codep++ & 0xff) << 16; | |
1887 | x |= (*codep++ & 0xff) << 24; | |
1888 | return (x); | |
1889 | } | |
1890 | ||
1891 | static int | |
1892 | get16 () | |
1893 | { | |
1894 | int x = 0; | |
1895 | ||
1896 | FETCH_DATA (the_info, codep + 2); | |
1897 | x = *codep++ & 0xff; | |
1898 | x |= (*codep++ & 0xff) << 8; | |
1899 | return (x); | |
1900 | } | |
1901 | ||
1902 | static void | |
1903 | set_op (op) | |
1904 | int op; | |
1905 | { | |
1906 | op_index[op_ad] = op_ad; | |
1907 | op_address[op_ad] = op; | |
1908 | } | |
1909 | ||
be0c8b05 SG |
1910 | static int |
1911 | OP_REG (code, aflag, dflag) | |
5d0734a7 | 1912 | int code; |
be0c8b05 SG |
1913 | int aflag; |
1914 | int dflag; | |
5d0734a7 JK |
1915 | { |
1916 | char *s; | |
1917 | ||
1918 | switch (code) | |
1919 | { | |
1920 | case indir_dx_reg: s = "(%dx)"; break; | |
1921 | case ax_reg: case cx_reg: case dx_reg: case bx_reg: | |
1922 | case sp_reg: case bp_reg: case si_reg: case di_reg: | |
1923 | s = names16[code - ax_reg]; | |
1924 | break; | |
1925 | case es_reg: case ss_reg: case cs_reg: | |
1926 | case ds_reg: case fs_reg: case gs_reg: | |
1927 | s = names_seg[code - es_reg]; | |
1928 | break; | |
1929 | case al_reg: case ah_reg: case cl_reg: case ch_reg: | |
1930 | case dl_reg: case dh_reg: case bl_reg: case bh_reg: | |
1931 | s = names8[code - al_reg]; | |
1932 | break; | |
1933 | case eAX_reg: case eCX_reg: case eDX_reg: case eBX_reg: | |
1934 | case eSP_reg: case eBP_reg: case eSI_reg: case eDI_reg: | |
1935 | if (dflag) | |
1936 | s = names32[code - eAX_reg]; | |
1937 | else | |
1938 | s = names16[code - eAX_reg]; | |
1939 | break; | |
1940 | default: | |
1941 | s = "<internal disassembler error>"; | |
1942 | break; | |
1943 | } | |
1944 | oappend (s); | |
1945 | return (0); | |
1946 | } | |
1947 | ||
be0c8b05 SG |
1948 | static int |
1949 | OP_I (bytemode, aflag, dflag) | |
5d0734a7 | 1950 | int bytemode; |
be0c8b05 SG |
1951 | int aflag; |
1952 | int dflag; | |
5d0734a7 JK |
1953 | { |
1954 | int op; | |
1955 | ||
1956 | switch (bytemode) | |
1957 | { | |
1958 | case b_mode: | |
1959 | FETCH_DATA (the_info, codep + 1); | |
1960 | op = *codep++ & 0xff; | |
1961 | break; | |
1962 | case v_mode: | |
1963 | if (dflag) | |
1964 | op = get32 (); | |
1965 | else | |
1966 | op = get16 (); | |
1967 | break; | |
1968 | case w_mode: | |
1969 | op = get16 (); | |
1970 | break; | |
1971 | default: | |
1972 | oappend ("<internal disassembler error>"); | |
1973 | return (0); | |
1974 | } | |
1975 | sprintf (scratchbuf, "$0x%x", op); | |
1976 | oappend (scratchbuf); | |
1977 | return (0); | |
1978 | } | |
1979 | ||
be0c8b05 SG |
1980 | static int |
1981 | OP_sI (bytemode, aflag, dflag) | |
5d0734a7 | 1982 | int bytemode; |
be0c8b05 SG |
1983 | int aflag; |
1984 | int dflag; | |
5d0734a7 JK |
1985 | { |
1986 | int op; | |
1987 | ||
1988 | switch (bytemode) | |
1989 | { | |
1990 | case b_mode: | |
1991 | FETCH_DATA (the_info, codep + 1); | |
1992 | op = *(char *)codep++; | |
1993 | break; | |
1994 | case v_mode: | |
1995 | if (dflag) | |
1996 | op = get32 (); | |
1997 | else | |
1998 | op = (short)get16(); | |
1999 | break; | |
2000 | case w_mode: | |
2001 | op = (short)get16 (); | |
2002 | break; | |
2003 | default: | |
2004 | oappend ("<internal disassembler error>"); | |
2005 | return (0); | |
2006 | } | |
2007 | sprintf (scratchbuf, "$0x%x", op); | |
2008 | oappend (scratchbuf); | |
2009 | return (0); | |
2010 | } | |
2011 | ||
be0c8b05 SG |
2012 | static int |
2013 | OP_J (bytemode, aflag, dflag) | |
5d0734a7 | 2014 | int bytemode; |
be0c8b05 SG |
2015 | int aflag; |
2016 | int dflag; | |
5d0734a7 JK |
2017 | { |
2018 | int disp; | |
2019 | int mask = -1; | |
2020 | ||
2021 | switch (bytemode) | |
2022 | { | |
2023 | case b_mode: | |
2024 | FETCH_DATA (the_info, codep + 1); | |
2025 | disp = *(char *)codep++; | |
2026 | break; | |
2027 | case v_mode: | |
2028 | if (dflag) | |
2029 | disp = get32 (); | |
2030 | else | |
2031 | { | |
2032 | disp = (short)get16 (); | |
2033 | /* for some reason, a data16 prefix on a jump instruction | |
2034 | means that the pc is masked to 16 bits after the | |
2035 | displacement is added! */ | |
2036 | mask = 0xffff; | |
2037 | } | |
2038 | break; | |
2039 | default: | |
2040 | oappend ("<internal disassembler error>"); | |
2041 | return (0); | |
2042 | } | |
2043 | disp = (start_pc + codep - start_codep + disp) & mask; | |
2044 | set_op (disp); | |
2045 | sprintf (scratchbuf, "0x%x", disp); | |
2046 | oappend (scratchbuf); | |
2047 | return (0); | |
2048 | } | |
2049 | ||
2050 | /* ARGSUSED */ | |
be0c8b05 SG |
2051 | static int |
2052 | OP_SEG (dummy, aflag, dflag) | |
5d0734a7 | 2053 | int dummy; |
be0c8b05 SG |
2054 | int aflag; |
2055 | int dflag; | |
5d0734a7 JK |
2056 | { |
2057 | static char *sreg[] = { | |
2058 | "%es","%cs","%ss","%ds","%fs","%gs","%?","%?", | |
2059 | }; | |
2060 | ||
2061 | oappend (sreg[reg]); | |
2062 | return (0); | |
2063 | } | |
2064 | ||
be0c8b05 SG |
2065 | static int |
2066 | OP_DIR (size, aflag, dflag) | |
5d0734a7 | 2067 | int size; |
be0c8b05 SG |
2068 | int aflag; |
2069 | int dflag; | |
5d0734a7 JK |
2070 | { |
2071 | int seg, offset; | |
2072 | ||
2073 | switch (size) | |
2074 | { | |
2075 | case lptr: | |
2076 | if (aflag) | |
2077 | { | |
2078 | offset = get32 (); | |
2079 | seg = get16 (); | |
2080 | } | |
2081 | else | |
2082 | { | |
2083 | offset = get16 (); | |
2084 | seg = get16 (); | |
2085 | } | |
2086 | sprintf (scratchbuf, "0x%x,0x%x", seg, offset); | |
2087 | oappend (scratchbuf); | |
2088 | break; | |
2089 | case v_mode: | |
2090 | if (aflag) | |
2091 | offset = get32 (); | |
2092 | else | |
2093 | offset = (short)get16 (); | |
2094 | ||
2095 | offset = start_pc + codep - start_codep + offset; | |
2096 | set_op (offset); | |
2097 | sprintf (scratchbuf, "0x%x", offset); | |
2098 | oappend (scratchbuf); | |
2099 | break; | |
2100 | default: | |
2101 | oappend ("<internal disassembler error>"); | |
2102 | break; | |
2103 | } | |
2104 | return (0); | |
2105 | } | |
2106 | ||
2107 | /* ARGSUSED */ | |
be0c8b05 SG |
2108 | static int |
2109 | OP_OFF (bytemode, aflag, dflag) | |
5d0734a7 | 2110 | int bytemode; |
be0c8b05 SG |
2111 | int aflag; |
2112 | int dflag; | |
5d0734a7 JK |
2113 | { |
2114 | int off; | |
be0c8b05 SG |
2115 | |
2116 | append_prefix (); | |
2117 | ||
5d0734a7 JK |
2118 | if (aflag) |
2119 | off = get32 (); | |
2120 | else | |
2121 | off = get16 (); | |
2122 | ||
2123 | sprintf (scratchbuf, "0x%x", off); | |
2124 | oappend (scratchbuf); | |
2125 | return (0); | |
2126 | } | |
2127 | ||
2128 | /* ARGSUSED */ | |
be0c8b05 SG |
2129 | static int |
2130 | OP_ESDI (dummy, aflag, dflag) | |
2131 | int dummy; | |
2132 | int aflag; | |
2133 | int dflag; | |
5d0734a7 JK |
2134 | { |
2135 | oappend ("%es:("); | |
2136 | oappend (aflag ? "%edi" : "%di"); | |
2137 | oappend (")"); | |
2138 | return (0); | |
2139 | } | |
2140 | ||
2141 | /* ARGSUSED */ | |
be0c8b05 SG |
2142 | static int |
2143 | OP_DSSI (dummy, aflag, dflag) | |
2144 | int dummy; | |
2145 | int aflag; | |
2146 | int dflag; | |
5d0734a7 JK |
2147 | { |
2148 | oappend ("%ds:("); | |
2149 | oappend (aflag ? "%esi" : "%si"); | |
2150 | oappend (")"); | |
2151 | return (0); | |
2152 | } | |
2153 | ||
41b96d55 ILT |
2154 | #if 0 |
2155 | /* Not used. */ | |
2156 | ||
5d0734a7 | 2157 | /* ARGSUSED */ |
be0c8b05 SG |
2158 | static int |
2159 | OP_ONE (dummy, aflag, dflag) | |
2160 | int dummy; | |
2161 | int aflag; | |
2162 | int dflag; | |
5d0734a7 JK |
2163 | { |
2164 | oappend ("1"); | |
2165 | return (0); | |
2166 | } | |
2167 | ||
41b96d55 ILT |
2168 | #endif |
2169 | ||
5d0734a7 | 2170 | /* ARGSUSED */ |
be0c8b05 SG |
2171 | static int |
2172 | OP_C (dummy, aflag, dflag) | |
2173 | int dummy; | |
2174 | int aflag; | |
2175 | int dflag; | |
5d0734a7 JK |
2176 | { |
2177 | codep++; /* skip mod/rm */ | |
2178 | sprintf (scratchbuf, "%%cr%d", reg); | |
2179 | oappend (scratchbuf); | |
2180 | return (0); | |
2181 | } | |
2182 | ||
2183 | /* ARGSUSED */ | |
be0c8b05 SG |
2184 | static int |
2185 | OP_D (dummy, aflag, dflag) | |
2186 | int dummy; | |
2187 | int aflag; | |
2188 | int dflag; | |
5d0734a7 JK |
2189 | { |
2190 | codep++; /* skip mod/rm */ | |
2191 | sprintf (scratchbuf, "%%db%d", reg); | |
2192 | oappend (scratchbuf); | |
2193 | return (0); | |
2194 | } | |
2195 | ||
2196 | /* ARGSUSED */ | |
be0c8b05 SG |
2197 | static int |
2198 | OP_T (dummy, aflag, dflag) | |
5d0734a7 | 2199 | int dummy; |
be0c8b05 SG |
2200 | int aflag; |
2201 | int dflag; | |
5d0734a7 JK |
2202 | { |
2203 | codep++; /* skip mod/rm */ | |
2204 | sprintf (scratchbuf, "%%tr%d", reg); | |
2205 | oappend (scratchbuf); | |
2206 | return (0); | |
2207 | } | |
2208 | ||
be0c8b05 SG |
2209 | static int |
2210 | OP_rm (bytemode, aflag, dflag) | |
5d0734a7 | 2211 | int bytemode; |
be0c8b05 SG |
2212 | int aflag; |
2213 | int dflag; | |
5d0734a7 JK |
2214 | { |
2215 | switch (bytemode) | |
2216 | { | |
2217 | case d_mode: | |
2218 | oappend (names32[rm]); | |
2219 | break; | |
2220 | case w_mode: | |
2221 | oappend (names16[rm]); | |
2222 | break; | |
2223 | } | |
2224 | return (0); | |
2225 | } | |
eedca9da ILT |
2226 | |
2227 | static int | |
2228 | OP_MMX (bytemode, aflag, dflag) | |
2229 | int bytemode; | |
2230 | int aflag; | |
2231 | int dflag; | |
2232 | { | |
2233 | sprintf (scratchbuf, "%%mm%d", reg); | |
2234 | oappend (scratchbuf); | |
2235 | return 0; | |
2236 | } | |
2237 | ||
2238 | static int | |
2239 | OP_EM (bytemode, aflag, dflag) | |
2240 | int bytemode; | |
2241 | int aflag; | |
2242 | int dflag; | |
2243 | { | |
2244 | if (mod != 3) | |
2245 | return OP_E (bytemode, aflag, dflag); | |
2246 | ||
2247 | codep++; | |
2248 | sprintf (scratchbuf, "%%mm%d", rm); | |
2249 | oappend (scratchbuf); | |
2250 | return 0; | |
2251 | } | |
2252 | ||
2253 | static int | |
2254 | OP_MS (bytemode, aflag, dflag) | |
2255 | int bytemode; | |
2256 | int aflag; | |
2257 | int dflag; | |
2258 | { | |
2259 | ++codep; | |
2260 | sprintf (scratchbuf, "%%mm%d", rm); | |
2261 | oappend (scratchbuf); | |
2262 | return 0; | |
2263 | } |