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a09e091a JB |
1 | /**************************************************************************** |
2 | * | |
3 | * Realmode X86 Emulator Library | |
4 | * | |
5 | * Copyright (C) 1996-1999 SciTech Software, Inc. | |
6 | * Copyright (C) David Mosberger-Tang | |
7 | * Copyright (C) 1999 Egbert Eich | |
8 | * | |
9 | * ======================================================================== | |
10 | * | |
11 | * Permission to use, copy, modify, distribute, and sell this software and | |
12 | * its documentation for any purpose is hereby granted without fee, | |
13 | * provided that the above copyright notice appear in all copies and that | |
14 | * both that copyright notice and this permission notice appear in | |
15 | * supporting documentation, and that the name of the authors not be used | |
16 | * in advertising or publicity pertaining to distribution of the software | |
17 | * without specific, written prior permission. The authors makes no | |
18 | * representations about the suitability of this software for any purpose. | |
19 | * It is provided "as is" without express or implied warranty. | |
20 | * | |
21 | * THE AUTHORS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, | |
22 | * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO | |
23 | * EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR | |
24 | * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF | |
25 | * USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR | |
26 | * OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR | |
27 | * PERFORMANCE OF THIS SOFTWARE. | |
28 | * | |
29 | * ======================================================================== | |
30 | * | |
31 | * Language: ANSI C | |
32 | * Environment: Any | |
33 | * Developer: Kendall Bennett | |
34 | * | |
35 | * Description: This file contains the code to implement the decoding and | |
36 | * emulation of the FPU instructions. | |
37 | * | |
38 | ****************************************************************************/ | |
39 | ||
40 | #include "x86emu/x86emui.h" | |
41 | ||
42 | /*----------------------------- Implementation ----------------------------*/ | |
43 | ||
44 | /* opcode=0xd8 */ | |
45 | void | |
46 | x86emuOp_esc_coprocess_d8(u8 X86EMU_UNUSED(op1)) | |
47 | { | |
48 | START_OF_INSTR(); | |
49 | DECODE_PRINTF("ESC D8\n"); | |
50 | DECODE_CLEAR_SEGOVR(); | |
51 | END_OF_INSTR_NO_TRACE(); | |
52 | } | |
53 | ||
54 | #ifdef DEBUG | |
55 | ||
56 | static const char *x86emu_fpu_op_d9_tab[] = { | |
57 | "FLD\tDWORD PTR ", "ESC_D9\t", "FST\tDWORD PTR ", "FSTP\tDWORD PTR ", | |
58 | "FLDENV\t", "FLDCW\t", "FSTENV\t", "FSTCW\t", | |
59 | ||
60 | "FLD\tDWORD PTR ", "ESC_D9\t", "FST\tDWORD PTR ", "FSTP\tDWORD PTR ", | |
61 | "FLDENV\t", "FLDCW\t", "FSTENV\t", "FSTCW\t", | |
62 | ||
63 | "FLD\tDWORD PTR ", "ESC_D9\t", "FST\tDWORD PTR ", "FSTP\tDWORD PTR ", | |
64 | "FLDENV\t", "FLDCW\t", "FSTENV\t", "FSTCW\t", | |
65 | }; | |
66 | ||
67 | static const char *x86emu_fpu_op_d9_tab1[] = { | |
68 | "FLD\t", "FLD\t", "FLD\t", "FLD\t", | |
69 | "FLD\t", "FLD\t", "FLD\t", "FLD\t", | |
70 | ||
71 | "FXCH\t", "FXCH\t", "FXCH\t", "FXCH\t", | |
72 | "FXCH\t", "FXCH\t", "FXCH\t", "FXCH\t", | |
73 | ||
74 | "FNOP", "ESC_D9", "ESC_D9", "ESC_D9", | |
75 | "ESC_D9", "ESC_D9", "ESC_D9", "ESC_D9", | |
76 | ||
77 | "FSTP\t", "FSTP\t", "FSTP\t", "FSTP\t", | |
78 | "FSTP\t", "FSTP\t", "FSTP\t", "FSTP\t", | |
79 | ||
80 | "FCHS", "FABS", "ESC_D9", "ESC_D9", | |
81 | "FTST", "FXAM", "ESC_D9", "ESC_D9", | |
82 | ||
83 | "FLD1", "FLDL2T", "FLDL2E", "FLDPI", | |
84 | "FLDLG2", "FLDLN2", "FLDZ", "ESC_D9", | |
85 | ||
86 | "F2XM1", "FYL2X", "FPTAN", "FPATAN", | |
87 | "FXTRACT", "ESC_D9", "FDECSTP", "FINCSTP", | |
88 | ||
89 | "FPREM", "FYL2XP1", "FSQRT", "ESC_D9", | |
90 | "FRNDINT", "FSCALE", "ESC_D9", "ESC_D9", | |
91 | }; | |
92 | ||
93 | #endif /* DEBUG */ | |
94 | ||
95 | /* opcode=0xd9 */ | |
96 | void | |
97 | x86emuOp_esc_coprocess_d9(u8 X86EMU_UNUSED(op1)) | |
98 | { | |
99 | int mod, rl, rh; | |
100 | uint destoffset = 0; | |
101 | u8 stkelem = 0; | |
102 | ||
103 | START_OF_INSTR(); | |
104 | FETCH_DECODE_MODRM(mod, rh, rl); | |
105 | #ifdef DEBUG | |
106 | if (mod != 3) { | |
107 | DECODE_PRINTINSTR32(x86emu_fpu_op_d9_tab, mod, rh, rl); | |
108 | } | |
109 | else { | |
110 | DECODE_PRINTF(x86emu_fpu_op_d9_tab1[(rh << 3) + rl]); | |
111 | } | |
112 | #endif | |
113 | switch (mod) { | |
114 | case 0: | |
115 | destoffset = decode_rm00_address(rl); | |
116 | DECODE_PRINTF("\n"); | |
117 | break; | |
118 | case 1: | |
119 | destoffset = decode_rm01_address(rl); | |
120 | DECODE_PRINTF("\n"); | |
121 | break; | |
122 | case 2: | |
123 | destoffset = decode_rm10_address(rl); | |
124 | DECODE_PRINTF("\n"); | |
125 | break; | |
126 | case 3: /* register to register */ | |
127 | stkelem = (u8) rl; | |
128 | if (rh < 4) { | |
129 | DECODE_PRINTF2("ST(%d)\n", stkelem); | |
130 | } | |
131 | else { | |
132 | DECODE_PRINTF("\n"); | |
133 | } | |
134 | break; | |
135 | } | |
136 | #ifdef X86EMU_FPU_PRESENT | |
137 | /* execute */ | |
138 | switch (mod) { | |
139 | case 3: | |
140 | switch (rh) { | |
141 | case 0: | |
142 | x86emu_fpu_R_fld(X86EMU_FPU_STKTOP, stkelem); | |
143 | break; | |
144 | case 1: | |
145 | x86emu_fpu_R_fxch(X86EMU_FPU_STKTOP, stkelem); | |
146 | break; | |
147 | case 2: | |
148 | switch (rl) { | |
149 | case 0: | |
150 | x86emu_fpu_R_nop(); | |
151 | break; | |
152 | default: | |
153 | x86emu_fpu_illegal(); | |
154 | break; | |
155 | } | |
156 | case 3: | |
157 | x86emu_fpu_R_fstp(X86EMU_FPU_STKTOP, stkelem); | |
158 | break; | |
159 | case 4: | |
160 | switch (rl) { | |
161 | case 0: | |
162 | x86emu_fpu_R_fchs(X86EMU_FPU_STKTOP); | |
163 | break; | |
164 | case 1: | |
165 | x86emu_fpu_R_fabs(X86EMU_FPU_STKTOP); | |
166 | break; | |
167 | case 4: | |
168 | x86emu_fpu_R_ftst(X86EMU_FPU_STKTOP); | |
169 | break; | |
170 | case 5: | |
171 | x86emu_fpu_R_fxam(X86EMU_FPU_STKTOP); | |
172 | break; | |
173 | default: | |
174 | /* 2,3,6,7 */ | |
175 | x86emu_fpu_illegal(); | |
176 | break; | |
177 | } | |
178 | break; | |
179 | ||
180 | case 5: | |
181 | switch (rl) { | |
182 | case 0: | |
183 | x86emu_fpu_R_fld1(X86EMU_FPU_STKTOP); | |
184 | break; | |
185 | case 1: | |
186 | x86emu_fpu_R_fldl2t(X86EMU_FPU_STKTOP); | |
187 | break; | |
188 | case 2: | |
189 | x86emu_fpu_R_fldl2e(X86EMU_FPU_STKTOP); | |
190 | break; | |
191 | case 3: | |
192 | x86emu_fpu_R_fldpi(X86EMU_FPU_STKTOP); | |
193 | break; | |
194 | case 4: | |
195 | x86emu_fpu_R_fldlg2(X86EMU_FPU_STKTOP); | |
196 | break; | |
197 | case 5: | |
198 | x86emu_fpu_R_fldln2(X86EMU_FPU_STKTOP); | |
199 | break; | |
200 | case 6: | |
201 | x86emu_fpu_R_fldz(X86EMU_FPU_STKTOP); | |
202 | break; | |
203 | default: | |
204 | /* 7 */ | |
205 | x86emu_fpu_illegal(); | |
206 | break; | |
207 | } | |
208 | break; | |
209 | ||
210 | case 6: | |
211 | switch (rl) { | |
212 | case 0: | |
213 | x86emu_fpu_R_f2xm1(X86EMU_FPU_STKTOP); | |
214 | break; | |
215 | case 1: | |
216 | x86emu_fpu_R_fyl2x(X86EMU_FPU_STKTOP); | |
217 | break; | |
218 | case 2: | |
219 | x86emu_fpu_R_fptan(X86EMU_FPU_STKTOP); | |
220 | break; | |
221 | case 3: | |
222 | x86emu_fpu_R_fpatan(X86EMU_FPU_STKTOP); | |
223 | break; | |
224 | case 4: | |
225 | x86emu_fpu_R_fxtract(X86EMU_FPU_STKTOP); | |
226 | break; | |
227 | case 5: | |
228 | x86emu_fpu_illegal(); | |
229 | break; | |
230 | case 6: | |
231 | x86emu_fpu_R_decstp(); | |
232 | break; | |
233 | case 7: | |
234 | x86emu_fpu_R_incstp(); | |
235 | break; | |
236 | } | |
237 | break; | |
238 | ||
239 | case 7: | |
240 | switch (rl) { | |
241 | case 0: | |
242 | x86emu_fpu_R_fprem(X86EMU_FPU_STKTOP); | |
243 | break; | |
244 | case 1: | |
245 | x86emu_fpu_R_fyl2xp1(X86EMU_FPU_STKTOP); | |
246 | break; | |
247 | case 2: | |
248 | x86emu_fpu_R_fsqrt(X86EMU_FPU_STKTOP); | |
249 | break; | |
250 | case 3: | |
251 | x86emu_fpu_illegal(); | |
252 | break; | |
253 | case 4: | |
254 | x86emu_fpu_R_frndint(X86EMU_FPU_STKTOP); | |
255 | break; | |
256 | case 5: | |
257 | x86emu_fpu_R_fscale(X86EMU_FPU_STKTOP); | |
258 | break; | |
259 | case 6: | |
260 | case 7: | |
261 | default: | |
262 | x86emu_fpu_illegal(); | |
263 | break; | |
264 | } | |
265 | break; | |
266 | ||
267 | default: | |
268 | switch (rh) { | |
269 | case 0: | |
270 | x86emu_fpu_M_fld(X86EMU_FPU_FLOAT, destoffset); | |
271 | break; | |
272 | case 1: | |
273 | x86emu_fpu_illegal(); | |
274 | break; | |
275 | case 2: | |
276 | x86emu_fpu_M_fst(X86EMU_FPU_FLOAT, destoffset); | |
277 | break; | |
278 | case 3: | |
279 | x86emu_fpu_M_fstp(X86EMU_FPU_FLOAT, destoffset); | |
280 | break; | |
281 | case 4: | |
282 | x86emu_fpu_M_fldenv(X86EMU_FPU_WORD, destoffset); | |
283 | break; | |
284 | case 5: | |
285 | x86emu_fpu_M_fldcw(X86EMU_FPU_WORD, destoffset); | |
286 | break; | |
287 | case 6: | |
288 | x86emu_fpu_M_fstenv(X86EMU_FPU_WORD, destoffset); | |
289 | break; | |
290 | case 7: | |
291 | x86emu_fpu_M_fstcw(X86EMU_FPU_WORD, destoffset); | |
292 | break; | |
293 | } | |
294 | } | |
295 | } | |
296 | #else | |
297 | (void) destoffset; | |
298 | (void) stkelem; | |
299 | #endif /* X86EMU_FPU_PRESENT */ | |
300 | DECODE_CLEAR_SEGOVR(); | |
301 | END_OF_INSTR_NO_TRACE(); | |
302 | } | |
303 | ||
304 | #ifdef DEBUG | |
305 | ||
306 | static const char *x86emu_fpu_op_da_tab[] = { | |
307 | "FIADD\tDWORD PTR ", "FIMUL\tDWORD PTR ", "FICOM\tDWORD PTR ", | |
308 | "FICOMP\tDWORD PTR ", | |
309 | "FISUB\tDWORD PTR ", "FISUBR\tDWORD PTR ", "FIDIV\tDWORD PTR ", | |
310 | "FIDIVR\tDWORD PTR ", | |
311 | ||
312 | "FIADD\tDWORD PTR ", "FIMUL\tDWORD PTR ", "FICOM\tDWORD PTR ", | |
313 | "FICOMP\tDWORD PTR ", | |
314 | "FISUB\tDWORD PTR ", "FISUBR\tDWORD PTR ", "FIDIV\tDWORD PTR ", | |
315 | "FIDIVR\tDWORD PTR ", | |
316 | ||
317 | "FIADD\tDWORD PTR ", "FIMUL\tDWORD PTR ", "FICOM\tDWORD PTR ", | |
318 | "FICOMP\tDWORD PTR ", | |
319 | "FISUB\tDWORD PTR ", "FISUBR\tDWORD PTR ", "FIDIV\tDWORD PTR ", | |
320 | "FIDIVR\tDWORD PTR ", | |
321 | ||
322 | "ESC_DA ", "ESC_DA ", "ESC_DA ", "ESC_DA ", | |
323 | "ESC_DA ", "ESC_DA ", "ESC_DA ", "ESC_DA ", | |
324 | }; | |
325 | ||
326 | #endif /* DEBUG */ | |
327 | ||
328 | /* opcode=0xda */ | |
329 | void | |
330 | x86emuOp_esc_coprocess_da(u8 X86EMU_UNUSED(op1)) | |
331 | { | |
332 | int mod, rl, rh; | |
333 | uint destoffset = 0; | |
334 | u8 stkelem = 0; | |
335 | ||
336 | START_OF_INSTR(); | |
337 | FETCH_DECODE_MODRM(mod, rh, rl); | |
338 | DECODE_PRINTINSTR32(x86emu_fpu_op_da_tab, mod, rh, rl); | |
339 | switch (mod) { | |
340 | case 0: | |
341 | destoffset = decode_rm00_address(rl); | |
342 | DECODE_PRINTF("\n"); | |
343 | break; | |
344 | case 1: | |
345 | destoffset = decode_rm01_address(rl); | |
346 | DECODE_PRINTF("\n"); | |
347 | break; | |
348 | case 2: | |
349 | destoffset = decode_rm10_address(rl); | |
350 | DECODE_PRINTF("\n"); | |
351 | break; | |
352 | case 3: /* register to register */ | |
353 | stkelem = (u8) rl; | |
354 | DECODE_PRINTF2("\tST(%d),ST\n", stkelem); | |
355 | break; | |
356 | } | |
357 | #ifdef X86EMU_FPU_PRESENT | |
358 | switch (mod) { | |
359 | case 3: | |
360 | x86emu_fpu_illegal(); | |
361 | break; | |
362 | default: | |
363 | switch (rh) { | |
364 | case 0: | |
365 | x86emu_fpu_M_iadd(X86EMU_FPU_SHORT, destoffset); | |
366 | break; | |
367 | case 1: | |
368 | x86emu_fpu_M_imul(X86EMU_FPU_SHORT, destoffset); | |
369 | break; | |
370 | case 2: | |
371 | x86emu_fpu_M_icom(X86EMU_FPU_SHORT, destoffset); | |
372 | break; | |
373 | case 3: | |
374 | x86emu_fpu_M_icomp(X86EMU_FPU_SHORT, destoffset); | |
375 | break; | |
376 | case 4: | |
377 | x86emu_fpu_M_isub(X86EMU_FPU_SHORT, destoffset); | |
378 | break; | |
379 | case 5: | |
380 | x86emu_fpu_M_isubr(X86EMU_FPU_SHORT, destoffset); | |
381 | break; | |
382 | case 6: | |
383 | x86emu_fpu_M_idiv(X86EMU_FPU_SHORT, destoffset); | |
384 | break; | |
385 | case 7: | |
386 | x86emu_fpu_M_idivr(X86EMU_FPU_SHORT, destoffset); | |
387 | break; | |
388 | } | |
389 | } | |
390 | #else | |
391 | (void) destoffset; | |
392 | (void) stkelem; | |
393 | #endif | |
394 | DECODE_CLEAR_SEGOVR(); | |
395 | END_OF_INSTR_NO_TRACE(); | |
396 | } | |
397 | ||
398 | #ifdef DEBUG | |
399 | ||
400 | static const char *x86emu_fpu_op_db_tab[] = { | |
401 | "FILD\tDWORD PTR ", "ESC_DB\t19", "FIST\tDWORD PTR ", "FISTP\tDWORD PTR ", | |
402 | "ESC_DB\t1C", "FLD\tTBYTE PTR ", "ESC_DB\t1E", "FSTP\tTBYTE PTR ", | |
403 | ||
404 | "FILD\tDWORD PTR ", "ESC_DB\t19", "FIST\tDWORD PTR ", "FISTP\tDWORD PTR ", | |
405 | "ESC_DB\t1C", "FLD\tTBYTE PTR ", "ESC_DB\t1E", "FSTP\tTBYTE PTR ", | |
406 | ||
407 | "FILD\tDWORD PTR ", "ESC_DB\t19", "FIST\tDWORD PTR ", "FISTP\tDWORD PTR ", | |
408 | "ESC_DB\t1C", "FLD\tTBYTE PTR ", "ESC_DB\t1E", "FSTP\tTBYTE PTR ", | |
409 | }; | |
410 | ||
411 | #endif /* DEBUG */ | |
412 | ||
413 | /* opcode=0xdb */ | |
414 | void | |
415 | x86emuOp_esc_coprocess_db(u8 X86EMU_UNUSED(op1)) | |
416 | { | |
417 | int mod, rl, rh; | |
418 | uint destoffset = 0; | |
419 | ||
420 | START_OF_INSTR(); | |
421 | FETCH_DECODE_MODRM(mod, rh, rl); | |
422 | #ifdef DEBUG | |
423 | if (mod != 3) { | |
424 | DECODE_PRINTINSTR32(x86emu_fpu_op_db_tab, mod, rh, rl); | |
425 | } | |
426 | else if (rh == 4) { /* === 11 10 0 nnn */ | |
427 | switch (rl) { | |
428 | case 0: | |
429 | DECODE_PRINTF("FENI\n"); | |
430 | break; | |
431 | case 1: | |
432 | DECODE_PRINTF("FDISI\n"); | |
433 | break; | |
434 | case 2: | |
435 | DECODE_PRINTF("FCLEX\n"); | |
436 | break; | |
437 | case 3: | |
438 | DECODE_PRINTF("FINIT\n"); | |
439 | break; | |
440 | } | |
441 | } | |
442 | else { | |
443 | DECODE_PRINTF2("ESC_DB %0x\n", (mod << 6) + (rh << 3) + (rl)); | |
444 | } | |
445 | #endif /* DEBUG */ | |
446 | switch (mod) { | |
447 | case 0: | |
448 | destoffset = decode_rm00_address(rl); | |
449 | break; | |
450 | case 1: | |
451 | destoffset = decode_rm01_address(rl); | |
452 | break; | |
453 | case 2: | |
454 | destoffset = decode_rm10_address(rl); | |
455 | break; | |
456 | case 3: /* register to register */ | |
457 | break; | |
458 | } | |
459 | #ifdef X86EMU_FPU_PRESENT | |
460 | /* execute */ | |
461 | switch (mod) { | |
462 | case 3: | |
463 | switch (rh) { | |
464 | case 4: | |
465 | switch (rl) { | |
466 | case 0: | |
467 | x86emu_fpu_R_feni(); | |
468 | break; | |
469 | case 1: | |
470 | x86emu_fpu_R_fdisi(); | |
471 | break; | |
472 | case 2: | |
473 | x86emu_fpu_R_fclex(); | |
474 | break; | |
475 | case 3: | |
476 | x86emu_fpu_R_finit(); | |
477 | break; | |
478 | default: | |
479 | x86emu_fpu_illegal(); | |
480 | break; | |
481 | } | |
482 | break; | |
483 | default: | |
484 | x86emu_fpu_illegal(); | |
485 | break; | |
486 | } | |
487 | break; | |
488 | default: | |
489 | switch (rh) { | |
490 | case 0: | |
491 | x86emu_fpu_M_fild(X86EMU_FPU_SHORT, destoffset); | |
492 | break; | |
493 | case 1: | |
494 | x86emu_fpu_illegal(); | |
495 | break; | |
496 | case 2: | |
497 | x86emu_fpu_M_fist(X86EMU_FPU_SHORT, destoffset); | |
498 | break; | |
499 | case 3: | |
500 | x86emu_fpu_M_fistp(X86EMU_FPU_SHORT, destoffset); | |
501 | break; | |
502 | case 4: | |
503 | x86emu_fpu_illegal(); | |
504 | break; | |
505 | case 5: | |
506 | x86emu_fpu_M_fld(X86EMU_FPU_LDBL, destoffset); | |
507 | break; | |
508 | case 6: | |
509 | x86emu_fpu_illegal(); | |
510 | break; | |
511 | case 7: | |
512 | x86emu_fpu_M_fstp(X86EMU_FPU_LDBL, destoffset); | |
513 | break; | |
514 | } | |
515 | } | |
516 | #else | |
517 | (void) destoffset; | |
518 | #endif | |
519 | DECODE_CLEAR_SEGOVR(); | |
520 | END_OF_INSTR_NO_TRACE(); | |
521 | } | |
522 | ||
523 | #ifdef DEBUG | |
524 | static const char *x86emu_fpu_op_dc_tab[] = { | |
525 | "FADD\tQWORD PTR ", "FMUL\tQWORD PTR ", "FCOM\tQWORD PTR ", | |
526 | "FCOMP\tQWORD PTR ", | |
527 | "FSUB\tQWORD PTR ", "FSUBR\tQWORD PTR ", "FDIV\tQWORD PTR ", | |
528 | "FDIVR\tQWORD PTR ", | |
529 | ||
530 | "FADD\tQWORD PTR ", "FMUL\tQWORD PTR ", "FCOM\tQWORD PTR ", | |
531 | "FCOMP\tQWORD PTR ", | |
532 | "FSUB\tQWORD PTR ", "FSUBR\tQWORD PTR ", "FDIV\tQWORD PTR ", | |
533 | "FDIVR\tQWORD PTR ", | |
534 | ||
535 | "FADD\tQWORD PTR ", "FMUL\tQWORD PTR ", "FCOM\tQWORD PTR ", | |
536 | "FCOMP\tQWORD PTR ", | |
537 | "FSUB\tQWORD PTR ", "FSUBR\tQWORD PTR ", "FDIV\tQWORD PTR ", | |
538 | "FDIVR\tQWORD PTR ", | |
539 | ||
540 | "FADD\t", "FMUL\t", "FCOM\t", "FCOMP\t", | |
541 | "FSUBR\t", "FSUB\t", "FDIVR\t", "FDIV\t", | |
542 | }; | |
543 | #endif /* DEBUG */ | |
544 | ||
545 | /* opcode=0xdc */ | |
546 | void | |
547 | x86emuOp_esc_coprocess_dc(u8 X86EMU_UNUSED(op1)) | |
548 | { | |
549 | int mod, rl, rh; | |
550 | uint destoffset = 0; | |
551 | u8 stkelem = 0; | |
552 | ||
553 | START_OF_INSTR(); | |
554 | FETCH_DECODE_MODRM(mod, rh, rl); | |
555 | DECODE_PRINTINSTR32(x86emu_fpu_op_dc_tab, mod, rh, rl); | |
556 | switch (mod) { | |
557 | case 0: | |
558 | destoffset = decode_rm00_address(rl); | |
559 | DECODE_PRINTF("\n"); | |
560 | break; | |
561 | case 1: | |
562 | destoffset = decode_rm01_address(rl); | |
563 | DECODE_PRINTF("\n"); | |
564 | break; | |
565 | case 2: | |
566 | destoffset = decode_rm10_address(rl); | |
567 | DECODE_PRINTF("\n"); | |
568 | break; | |
569 | case 3: /* register to register */ | |
570 | stkelem = (u8) rl; | |
571 | DECODE_PRINTF2("\tST(%d),ST\n", stkelem); | |
572 | break; | |
573 | } | |
574 | #ifdef X86EMU_FPU_PRESENT | |
575 | /* execute */ | |
576 | switch (mod) { | |
577 | case 3: | |
578 | switch (rh) { | |
579 | case 0: | |
580 | x86emu_fpu_R_fadd(stkelem, X86EMU_FPU_STKTOP); | |
581 | break; | |
582 | case 1: | |
583 | x86emu_fpu_R_fmul(stkelem, X86EMU_FPU_STKTOP); | |
584 | break; | |
585 | case 2: | |
586 | x86emu_fpu_R_fcom(stkelem, X86EMU_FPU_STKTOP); | |
587 | break; | |
588 | case 3: | |
589 | x86emu_fpu_R_fcomp(stkelem, X86EMU_FPU_STKTOP); | |
590 | break; | |
591 | case 4: | |
592 | x86emu_fpu_R_fsubr(stkelem, X86EMU_FPU_STKTOP); | |
593 | break; | |
594 | case 5: | |
595 | x86emu_fpu_R_fsub(stkelem, X86EMU_FPU_STKTOP); | |
596 | break; | |
597 | case 6: | |
598 | x86emu_fpu_R_fdivr(stkelem, X86EMU_FPU_STKTOP); | |
599 | break; | |
600 | case 7: | |
601 | x86emu_fpu_R_fdiv(stkelem, X86EMU_FPU_STKTOP); | |
602 | break; | |
603 | } | |
604 | break; | |
605 | default: | |
606 | switch (rh) { | |
607 | case 0: | |
608 | x86emu_fpu_M_fadd(X86EMU_FPU_DOUBLE, destoffset); | |
609 | break; | |
610 | case 1: | |
611 | x86emu_fpu_M_fmul(X86EMU_FPU_DOUBLE, destoffset); | |
612 | break; | |
613 | case 2: | |
614 | x86emu_fpu_M_fcom(X86EMU_FPU_DOUBLE, destoffset); | |
615 | break; | |
616 | case 3: | |
617 | x86emu_fpu_M_fcomp(X86EMU_FPU_DOUBLE, destoffset); | |
618 | break; | |
619 | case 4: | |
620 | x86emu_fpu_M_fsub(X86EMU_FPU_DOUBLE, destoffset); | |
621 | break; | |
622 | case 5: | |
623 | x86emu_fpu_M_fsubr(X86EMU_FPU_DOUBLE, destoffset); | |
624 | break; | |
625 | case 6: | |
626 | x86emu_fpu_M_fdiv(X86EMU_FPU_DOUBLE, destoffset); | |
627 | break; | |
628 | case 7: | |
629 | x86emu_fpu_M_fdivr(X86EMU_FPU_DOUBLE, destoffset); | |
630 | break; | |
631 | } | |
632 | } | |
633 | #else | |
634 | (void) destoffset; | |
635 | (void) stkelem; | |
636 | #endif | |
637 | DECODE_CLEAR_SEGOVR(); | |
638 | END_OF_INSTR_NO_TRACE(); | |
639 | } | |
640 | ||
641 | #ifdef DEBUG | |
642 | ||
643 | static const char *x86emu_fpu_op_dd_tab[] = { | |
644 | "FLD\tQWORD PTR ", "ESC_DD\t29,", "FST\tQWORD PTR ", "FSTP\tQWORD PTR ", | |
645 | "FRSTOR\t", "ESC_DD\t2D,", "FSAVE\t", "FSTSW\t", | |
646 | ||
647 | "FLD\tQWORD PTR ", "ESC_DD\t29,", "FST\tQWORD PTR ", "FSTP\tQWORD PTR ", | |
648 | "FRSTOR\t", "ESC_DD\t2D,", "FSAVE\t", "FSTSW\t", | |
649 | ||
650 | "FLD\tQWORD PTR ", "ESC_DD\t29,", "FST\tQWORD PTR ", "FSTP\tQWORD PTR ", | |
651 | "FRSTOR\t", "ESC_DD\t2D,", "FSAVE\t", "FSTSW\t", | |
652 | ||
653 | "FFREE\t", "FXCH\t", "FST\t", "FSTP\t", | |
654 | "ESC_DD\t2C,", "ESC_DD\t2D,", "ESC_DD\t2E,", "ESC_DD\t2F,", | |
655 | }; | |
656 | ||
657 | #endif /* DEBUG */ | |
658 | ||
659 | /* opcode=0xdd */ | |
660 | void | |
661 | x86emuOp_esc_coprocess_dd(u8 X86EMU_UNUSED(op1)) | |
662 | { | |
663 | int mod, rl, rh; | |
664 | uint destoffset = 0; | |
665 | u8 stkelem = 0; | |
666 | ||
667 | START_OF_INSTR(); | |
668 | FETCH_DECODE_MODRM(mod, rh, rl); | |
669 | DECODE_PRINTINSTR32(x86emu_fpu_op_dd_tab, mod, rh, rl); | |
670 | switch (mod) { | |
671 | case 0: | |
672 | destoffset = decode_rm00_address(rl); | |
673 | DECODE_PRINTF("\n"); | |
674 | break; | |
675 | case 1: | |
676 | destoffset = decode_rm01_address(rl); | |
677 | DECODE_PRINTF("\n"); | |
678 | break; | |
679 | case 2: | |
680 | destoffset = decode_rm10_address(rl); | |
681 | DECODE_PRINTF("\n"); | |
682 | break; | |
683 | case 3: /* register to register */ | |
684 | stkelem = (u8) rl; | |
685 | DECODE_PRINTF2("\tST(%d),ST\n", stkelem); | |
686 | break; | |
687 | } | |
688 | #ifdef X86EMU_FPU_PRESENT | |
689 | switch (mod) { | |
690 | case 3: | |
691 | switch (rh) { | |
692 | case 0: | |
693 | x86emu_fpu_R_ffree(stkelem); | |
694 | break; | |
695 | case 1: | |
696 | x86emu_fpu_R_fxch(stkelem); | |
697 | break; | |
698 | case 2: | |
699 | x86emu_fpu_R_fst(stkelem); /* register version */ | |
700 | break; | |
701 | case 3: | |
702 | x86emu_fpu_R_fstp(stkelem); /* register version */ | |
703 | break; | |
704 | default: | |
705 | x86emu_fpu_illegal(); | |
706 | break; | |
707 | } | |
708 | break; | |
709 | default: | |
710 | switch (rh) { | |
711 | case 0: | |
712 | x86emu_fpu_M_fld(X86EMU_FPU_DOUBLE, destoffset); | |
713 | break; | |
714 | case 1: | |
715 | x86emu_fpu_illegal(); | |
716 | break; | |
717 | case 2: | |
718 | x86emu_fpu_M_fst(X86EMU_FPU_DOUBLE, destoffset); | |
719 | break; | |
720 | case 3: | |
721 | x86emu_fpu_M_fstp(X86EMU_FPU_DOUBLE, destoffset); | |
722 | break; | |
723 | case 4: | |
724 | x86emu_fpu_M_frstor(X86EMU_FPU_WORD, destoffset); | |
725 | break; | |
726 | case 5: | |
727 | x86emu_fpu_illegal(); | |
728 | break; | |
729 | case 6: | |
730 | x86emu_fpu_M_fsave(X86EMU_FPU_WORD, destoffset); | |
731 | break; | |
732 | case 7: | |
733 | x86emu_fpu_M_fstsw(X86EMU_FPU_WORD, destoffset); | |
734 | break; | |
735 | } | |
736 | } | |
737 | #else | |
738 | (void) destoffset; | |
739 | (void) stkelem; | |
740 | #endif | |
741 | DECODE_CLEAR_SEGOVR(); | |
742 | END_OF_INSTR_NO_TRACE(); | |
743 | } | |
744 | ||
745 | #ifdef DEBUG | |
746 | ||
747 | static const char *x86emu_fpu_op_de_tab[] = { | |
748 | "FIADD\tWORD PTR ", "FIMUL\tWORD PTR ", "FICOM\tWORD PTR ", | |
749 | "FICOMP\tWORD PTR ", | |
750 | "FISUB\tWORD PTR ", "FISUBR\tWORD PTR ", "FIDIV\tWORD PTR ", | |
751 | "FIDIVR\tWORD PTR ", | |
752 | ||
753 | "FIADD\tWORD PTR ", "FIMUL\tWORD PTR ", "FICOM\tWORD PTR ", | |
754 | "FICOMP\tWORD PTR ", | |
755 | "FISUB\tWORD PTR ", "FISUBR\tWORD PTR ", "FIDIV\tWORD PTR ", | |
756 | "FIDIVR\tWORD PTR ", | |
757 | ||
758 | "FIADD\tWORD PTR ", "FIMUL\tWORD PTR ", "FICOM\tWORD PTR ", | |
759 | "FICOMP\tWORD PTR ", | |
760 | "FISUB\tWORD PTR ", "FISUBR\tWORD PTR ", "FIDIV\tWORD PTR ", | |
761 | "FIDIVR\tWORD PTR ", | |
762 | ||
763 | "FADDP\t", "FMULP\t", "FCOMP\t", "FCOMPP\t", | |
764 | "FSUBRP\t", "FSUBP\t", "FDIVRP\t", "FDIVP\t", | |
765 | }; | |
766 | ||
767 | #endif /* DEBUG */ | |
768 | ||
769 | /* opcode=0xde */ | |
770 | void | |
771 | x86emuOp_esc_coprocess_de(u8 X86EMU_UNUSED(op1)) | |
772 | { | |
773 | int mod, rl, rh; | |
774 | uint destoffset = 0; | |
775 | u8 stkelem = 0; | |
776 | ||
777 | START_OF_INSTR(); | |
778 | FETCH_DECODE_MODRM(mod, rh, rl); | |
779 | DECODE_PRINTINSTR32(x86emu_fpu_op_de_tab, mod, rh, rl); | |
780 | switch (mod) { | |
781 | case 0: | |
782 | destoffset = decode_rm00_address(rl); | |
783 | DECODE_PRINTF("\n"); | |
784 | break; | |
785 | case 1: | |
786 | destoffset = decode_rm01_address(rl); | |
787 | DECODE_PRINTF("\n"); | |
788 | break; | |
789 | case 2: | |
790 | destoffset = decode_rm10_address(rl); | |
791 | DECODE_PRINTF("\n"); | |
792 | break; | |
793 | case 3: /* register to register */ | |
794 | stkelem = (u8) rl; | |
795 | DECODE_PRINTF2("\tST(%d),ST\n", stkelem); | |
796 | break; | |
797 | } | |
798 | #ifdef X86EMU_FPU_PRESENT | |
799 | switch (mod) { | |
800 | case 3: | |
801 | switch (rh) { | |
802 | case 0: | |
803 | x86emu_fpu_R_faddp(stkelem, X86EMU_FPU_STKTOP); | |
804 | break; | |
805 | case 1: | |
806 | x86emu_fpu_R_fmulp(stkelem, X86EMU_FPU_STKTOP); | |
807 | break; | |
808 | case 2: | |
809 | x86emu_fpu_R_fcomp(stkelem, X86EMU_FPU_STKTOP); | |
810 | break; | |
811 | case 3: | |
812 | if (stkelem == 1) | |
813 | x86emu_fpu_R_fcompp(stkelem, X86EMU_FPU_STKTOP); | |
814 | else | |
815 | x86emu_fpu_illegal(); | |
816 | break; | |
817 | case 4: | |
818 | x86emu_fpu_R_fsubrp(stkelem, X86EMU_FPU_STKTOP); | |
819 | break; | |
820 | case 5: | |
821 | x86emu_fpu_R_fsubp(stkelem, X86EMU_FPU_STKTOP); | |
822 | break; | |
823 | case 6: | |
824 | x86emu_fpu_R_fdivrp(stkelem, X86EMU_FPU_STKTOP); | |
825 | break; | |
826 | case 7: | |
827 | x86emu_fpu_R_fdivp(stkelem, X86EMU_FPU_STKTOP); | |
828 | break; | |
829 | } | |
830 | break; | |
831 | default: | |
832 | switch (rh) { | |
833 | case 0: | |
834 | x86emu_fpu_M_fiadd(X86EMU_FPU_WORD, destoffset); | |
835 | break; | |
836 | case 1: | |
837 | x86emu_fpu_M_fimul(X86EMU_FPU_WORD, destoffset); | |
838 | break; | |
839 | case 2: | |
840 | x86emu_fpu_M_ficom(X86EMU_FPU_WORD, destoffset); | |
841 | break; | |
842 | case 3: | |
843 | x86emu_fpu_M_ficomp(X86EMU_FPU_WORD, destoffset); | |
844 | break; | |
845 | case 4: | |
846 | x86emu_fpu_M_fisub(X86EMU_FPU_WORD, destoffset); | |
847 | break; | |
848 | case 5: | |
849 | x86emu_fpu_M_fisubr(X86EMU_FPU_WORD, destoffset); | |
850 | break; | |
851 | case 6: | |
852 | x86emu_fpu_M_fidiv(X86EMU_FPU_WORD, destoffset); | |
853 | break; | |
854 | case 7: | |
855 | x86emu_fpu_M_fidivr(X86EMU_FPU_WORD, destoffset); | |
856 | break; | |
857 | } | |
858 | } | |
859 | #else | |
860 | (void) destoffset; | |
861 | (void) stkelem; | |
862 | #endif | |
863 | DECODE_CLEAR_SEGOVR(); | |
864 | END_OF_INSTR_NO_TRACE(); | |
865 | } | |
866 | ||
867 | #ifdef DEBUG | |
868 | ||
869 | static const char *x86emu_fpu_op_df_tab[] = { | |
870 | /* mod == 00 */ | |
871 | "FILD\tWORD PTR ", "ESC_DF\t39\n", "FIST\tWORD PTR ", "FISTP\tWORD PTR ", | |
872 | "FBLD\tTBYTE PTR ", "FILD\tQWORD PTR ", "FBSTP\tTBYTE PTR ", | |
873 | "FISTP\tQWORD PTR ", | |
874 | ||
875 | /* mod == 01 */ | |
876 | "FILD\tWORD PTR ", "ESC_DF\t39 ", "FIST\tWORD PTR ", "FISTP\tWORD PTR ", | |
877 | "FBLD\tTBYTE PTR ", "FILD\tQWORD PTR ", "FBSTP\tTBYTE PTR ", | |
878 | "FISTP\tQWORD PTR ", | |
879 | ||
880 | /* mod == 10 */ | |
881 | "FILD\tWORD PTR ", "ESC_DF\t39 ", "FIST\tWORD PTR ", "FISTP\tWORD PTR ", | |
882 | "FBLD\tTBYTE PTR ", "FILD\tQWORD PTR ", "FBSTP\tTBYTE PTR ", | |
883 | "FISTP\tQWORD PTR ", | |
884 | ||
885 | /* mod == 11 */ | |
886 | "FFREE\t", "FXCH\t", "FST\t", "FSTP\t", | |
887 | "ESC_DF\t3C,", "ESC_DF\t3D,", "ESC_DF\t3E,", "ESC_DF\t3F," | |
888 | }; | |
889 | ||
890 | #endif /* DEBUG */ | |
891 | ||
892 | /* opcode=0xdf */ | |
893 | void | |
894 | x86emuOp_esc_coprocess_df(u8 X86EMU_UNUSED(op1)) | |
895 | { | |
896 | int mod, rl, rh; | |
897 | uint destoffset = 0; | |
898 | u8 stkelem = 0; | |
899 | ||
900 | START_OF_INSTR(); | |
901 | FETCH_DECODE_MODRM(mod, rh, rl); | |
902 | DECODE_PRINTINSTR32(x86emu_fpu_op_df_tab, mod, rh, rl); | |
903 | switch (mod) { | |
904 | case 0: | |
905 | destoffset = decode_rm00_address(rl); | |
906 | DECODE_PRINTF("\n"); | |
907 | break; | |
908 | case 1: | |
909 | destoffset = decode_rm01_address(rl); | |
910 | DECODE_PRINTF("\n"); | |
911 | break; | |
912 | case 2: | |
913 | destoffset = decode_rm10_address(rl); | |
914 | DECODE_PRINTF("\n"); | |
915 | break; | |
916 | case 3: /* register to register */ | |
917 | stkelem = (u8) rl; | |
918 | DECODE_PRINTF2("\tST(%d)\n", stkelem); | |
919 | break; | |
920 | } | |
921 | #ifdef X86EMU_FPU_PRESENT | |
922 | switch (mod) { | |
923 | case 3: | |
924 | switch (rh) { | |
925 | case 0: | |
926 | x86emu_fpu_R_ffree(stkelem); | |
927 | break; | |
928 | case 1: | |
929 | x86emu_fpu_R_fxch(stkelem); | |
930 | break; | |
931 | case 2: | |
932 | x86emu_fpu_R_fst(stkelem); /* register version */ | |
933 | break; | |
934 | case 3: | |
935 | x86emu_fpu_R_fstp(stkelem); /* register version */ | |
936 | break; | |
937 | default: | |
938 | x86emu_fpu_illegal(); | |
939 | break; | |
940 | } | |
941 | break; | |
942 | default: | |
943 | switch (rh) { | |
944 | case 0: | |
945 | x86emu_fpu_M_fild(X86EMU_FPU_WORD, destoffset); | |
946 | break; | |
947 | case 1: | |
948 | x86emu_fpu_illegal(); | |
949 | break; | |
950 | case 2: | |
951 | x86emu_fpu_M_fist(X86EMU_FPU_WORD, destoffset); | |
952 | break; | |
953 | case 3: | |
954 | x86emu_fpu_M_fistp(X86EMU_FPU_WORD, destoffset); | |
955 | break; | |
956 | case 4: | |
957 | x86emu_fpu_M_fbld(X86EMU_FPU_BSD, destoffset); | |
958 | break; | |
959 | case 5: | |
960 | x86emu_fpu_M_fild(X86EMU_FPU_LONG, destoffset); | |
961 | break; | |
962 | case 6: | |
963 | x86emu_fpu_M_fbstp(X86EMU_FPU_BSD, destoffset); | |
964 | break; | |
965 | case 7: | |
966 | x86emu_fpu_M_fistp(X86EMU_FPU_LONG, destoffset); | |
967 | break; | |
968 | } | |
969 | } | |
970 | #else | |
971 | (void) destoffset; | |
972 | (void) stkelem; | |
973 | #endif | |
974 | DECODE_CLEAR_SEGOVR(); | |
975 | END_OF_INSTR_NO_TRACE(); | |
976 | } |