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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 includes subroutines to implement the decoding | |
36 | * and emulation of all the x86 processor instructions. | |
37 | * | |
38 | * There are approximately 250 subroutines in here, which correspond | |
39 | * to the 256 byte-"opcodes" found on the 8086. The table which | |
40 | * dispatches this is found in the files optab.[ch]. | |
41 | * | |
42 | * Each opcode proc has a comment preceeding it which gives it's table | |
43 | * address. Several opcodes are missing (undefined) in the table. | |
44 | * | |
45 | * Each proc includes information for decoding (DECODE_PRINTF and | |
46 | * DECODE_PRINTF2), debugging (TRACE_REGS, SINGLE_STEP), and misc | |
47 | * functions (START_OF_INSTR, END_OF_INSTR). | |
48 | * | |
49 | * Many of the procedures are *VERY* similar in coding. This has | |
50 | * allowed for a very large amount of code to be generated in a fairly | |
51 | * short amount of time (i.e. cut, paste, and modify). The result is | |
52 | * that much of the code below could have been folded into subroutines | |
53 | * for a large reduction in size of this file. The downside would be | |
54 | * that there would be a penalty in execution speed. The file could | |
55 | * also have been *MUCH* larger by inlining certain functions which | |
56 | * were called. This could have resulted even faster execution. The | |
57 | * prime directive I used to decide whether to inline the code or to | |
58 | * modularize it, was basically: 1) no unnecessary subroutine calls, | |
59 | * 2) no routines more than about 200 lines in size, and 3) modularize | |
60 | * any code that I might not get right the first time. The fetch_* | |
61 | * subroutines fall into the latter category. The The decode_* fall | |
62 | * into the second category. The coding of the "switch(mod){ .... }" | |
63 | * in many of the subroutines below falls into the first category. | |
64 | * Especially, the coding of {add,and,or,sub,...}_{byte,word} | |
65 | * subroutines are an especially glaring case of the third guideline. | |
66 | * Since so much of the code is cloned from other modules (compare | |
67 | * opcode #00 to opcode #01), making the basic operations subroutine | |
68 | * calls is especially important; otherwise mistakes in coding an | |
69 | * "add" would represent a nightmare in maintenance. | |
70 | * | |
71 | ****************************************************************************/ | |
72 | ||
73 | #include "x86emu/x86emui.h" | |
74 | ||
75 | /*----------------------------- Implementation ----------------------------*/ | |
76 | ||
77 | /**************************************************************************** | |
78 | PARAMETERS: | |
79 | op1 - Instruction op code | |
80 | ||
81 | REMARKS: | |
82 | Handles illegal opcodes. | |
83 | ****************************************************************************/ | |
84 | static void | |
85 | x86emuOp_illegal_op(u8 op1) | |
86 | { | |
87 | START_OF_INSTR(); | |
88 | if (M.x86.R_SP != 0) { | |
89 | DECODE_PRINTF("ILLEGAL X86 OPCODE\n"); | |
90 | TRACE_REGS(); | |
91 | DB(printk("%04x:%04x: %02X ILLEGAL X86 OPCODE!\n", | |
92 | M.x86.R_CS, M.x86.R_IP - 1, op1)); | |
93 | HALT_SYS(); | |
94 | } | |
95 | else { | |
96 | /* If we get here, it means the stack pointer is back to zero | |
97 | * so we are just returning from an emulator service call | |
98 | * so therte is no need to display an error message. We trap | |
99 | * the emulator with an 0xF1 opcode to finish the service | |
100 | * call. | |
101 | */ | |
102 | X86EMU_halt_sys(); | |
103 | } | |
104 | END_OF_INSTR(); | |
105 | } | |
106 | ||
107 | /**************************************************************************** | |
108 | REMARKS: | |
109 | Handles opcode 0x00 | |
110 | ****************************************************************************/ | |
111 | static void | |
112 | x86emuOp_add_byte_RM_R(u8 X86EMU_UNUSED(op1)) | |
113 | { | |
114 | int mod, rl, rh; | |
115 | uint destoffset; | |
116 | u8 *destreg, *srcreg; | |
117 | u8 destval; | |
118 | ||
119 | START_OF_INSTR(); | |
120 | DECODE_PRINTF("ADD\t"); | |
121 | FETCH_DECODE_MODRM(mod, rh, rl); | |
122 | switch (mod) { | |
123 | case 0: | |
124 | destoffset = decode_rm00_address(rl); | |
125 | DECODE_PRINTF(","); | |
126 | destval = fetch_data_byte(destoffset); | |
127 | srcreg = DECODE_RM_BYTE_REGISTER(rh); | |
128 | DECODE_PRINTF("\n"); | |
129 | TRACE_AND_STEP(); | |
130 | destval = add_byte(destval, *srcreg); | |
131 | store_data_byte(destoffset, destval); | |
132 | break; | |
133 | case 1: | |
134 | destoffset = decode_rm01_address(rl); | |
135 | DECODE_PRINTF(","); | |
136 | destval = fetch_data_byte(destoffset); | |
137 | srcreg = DECODE_RM_BYTE_REGISTER(rh); | |
138 | DECODE_PRINTF("\n"); | |
139 | TRACE_AND_STEP(); | |
140 | destval = add_byte(destval, *srcreg); | |
141 | store_data_byte(destoffset, destval); | |
142 | break; | |
143 | case 2: | |
144 | destoffset = decode_rm10_address(rl); | |
145 | DECODE_PRINTF(","); | |
146 | destval = fetch_data_byte(destoffset); | |
147 | srcreg = DECODE_RM_BYTE_REGISTER(rh); | |
148 | DECODE_PRINTF("\n"); | |
149 | TRACE_AND_STEP(); | |
150 | destval = add_byte(destval, *srcreg); | |
151 | store_data_byte(destoffset, destval); | |
152 | break; | |
153 | case 3: /* register to register */ | |
154 | destreg = DECODE_RM_BYTE_REGISTER(rl); | |
155 | DECODE_PRINTF(","); | |
156 | srcreg = DECODE_RM_BYTE_REGISTER(rh); | |
157 | DECODE_PRINTF("\n"); | |
158 | TRACE_AND_STEP(); | |
159 | *destreg = add_byte(*destreg, *srcreg); | |
160 | break; | |
161 | } | |
162 | DECODE_CLEAR_SEGOVR(); | |
163 | END_OF_INSTR(); | |
164 | } | |
165 | ||
166 | /**************************************************************************** | |
167 | REMARKS: | |
168 | Handles opcode 0x01 | |
169 | ****************************************************************************/ | |
170 | static void | |
171 | x86emuOp_add_word_RM_R(u8 X86EMU_UNUSED(op1)) | |
172 | { | |
173 | int mod, rl, rh; | |
174 | uint destoffset; | |
175 | ||
176 | START_OF_INSTR(); | |
177 | DECODE_PRINTF("ADD\t"); | |
178 | FETCH_DECODE_MODRM(mod, rh, rl); | |
179 | switch (mod) { | |
180 | case 0: | |
181 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
182 | u32 destval; | |
183 | u32 *srcreg; | |
184 | ||
185 | destoffset = decode_rm00_address(rl); | |
186 | DECODE_PRINTF(","); | |
187 | destval = fetch_data_long(destoffset); | |
188 | srcreg = DECODE_RM_LONG_REGISTER(rh); | |
189 | DECODE_PRINTF("\n"); | |
190 | TRACE_AND_STEP(); | |
191 | destval = add_long(destval, *srcreg); | |
192 | store_data_long(destoffset, destval); | |
193 | } | |
194 | else { | |
195 | u16 destval; | |
196 | u16 *srcreg; | |
197 | ||
198 | destoffset = decode_rm00_address(rl); | |
199 | DECODE_PRINTF(","); | |
200 | destval = fetch_data_word(destoffset); | |
201 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
202 | DECODE_PRINTF("\n"); | |
203 | TRACE_AND_STEP(); | |
204 | destval = add_word(destval, *srcreg); | |
205 | store_data_word(destoffset, destval); | |
206 | } | |
207 | break; | |
208 | case 1: | |
209 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
210 | u32 destval; | |
211 | u32 *srcreg; | |
212 | ||
213 | destoffset = decode_rm01_address(rl); | |
214 | DECODE_PRINTF(","); | |
215 | destval = fetch_data_long(destoffset); | |
216 | srcreg = DECODE_RM_LONG_REGISTER(rh); | |
217 | DECODE_PRINTF("\n"); | |
218 | TRACE_AND_STEP(); | |
219 | destval = add_long(destval, *srcreg); | |
220 | store_data_long(destoffset, destval); | |
221 | } | |
222 | else { | |
223 | u16 destval; | |
224 | u16 *srcreg; | |
225 | ||
226 | destoffset = decode_rm01_address(rl); | |
227 | DECODE_PRINTF(","); | |
228 | destval = fetch_data_word(destoffset); | |
229 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
230 | DECODE_PRINTF("\n"); | |
231 | TRACE_AND_STEP(); | |
232 | destval = add_word(destval, *srcreg); | |
233 | store_data_word(destoffset, destval); | |
234 | } | |
235 | break; | |
236 | case 2: | |
237 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
238 | u32 destval; | |
239 | u32 *srcreg; | |
240 | ||
241 | destoffset = decode_rm10_address(rl); | |
242 | DECODE_PRINTF(","); | |
243 | destval = fetch_data_long(destoffset); | |
244 | srcreg = DECODE_RM_LONG_REGISTER(rh); | |
245 | DECODE_PRINTF("\n"); | |
246 | TRACE_AND_STEP(); | |
247 | destval = add_long(destval, *srcreg); | |
248 | store_data_long(destoffset, destval); | |
249 | } | |
250 | else { | |
251 | u16 destval; | |
252 | u16 *srcreg; | |
253 | ||
254 | destoffset = decode_rm10_address(rl); | |
255 | DECODE_PRINTF(","); | |
256 | destval = fetch_data_word(destoffset); | |
257 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
258 | DECODE_PRINTF("\n"); | |
259 | TRACE_AND_STEP(); | |
260 | destval = add_word(destval, *srcreg); | |
261 | store_data_word(destoffset, destval); | |
262 | } | |
263 | break; | |
264 | case 3: /* register to register */ | |
265 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
266 | u32 *destreg, *srcreg; | |
267 | ||
268 | destreg = DECODE_RM_LONG_REGISTER(rl); | |
269 | DECODE_PRINTF(","); | |
270 | srcreg = DECODE_RM_LONG_REGISTER(rh); | |
271 | DECODE_PRINTF("\n"); | |
272 | TRACE_AND_STEP(); | |
273 | *destreg = add_long(*destreg, *srcreg); | |
274 | } | |
275 | else { | |
276 | u16 *destreg, *srcreg; | |
277 | ||
278 | destreg = DECODE_RM_WORD_REGISTER(rl); | |
279 | DECODE_PRINTF(","); | |
280 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
281 | DECODE_PRINTF("\n"); | |
282 | TRACE_AND_STEP(); | |
283 | *destreg = add_word(*destreg, *srcreg); | |
284 | } | |
285 | break; | |
286 | } | |
287 | DECODE_CLEAR_SEGOVR(); | |
288 | END_OF_INSTR(); | |
289 | } | |
290 | ||
291 | /**************************************************************************** | |
292 | REMARKS: | |
293 | Handles opcode 0x02 | |
294 | ****************************************************************************/ | |
295 | static void | |
296 | x86emuOp_add_byte_R_RM(u8 X86EMU_UNUSED(op1)) | |
297 | { | |
298 | int mod, rl, rh; | |
299 | u8 *destreg, *srcreg; | |
300 | uint srcoffset; | |
301 | u8 srcval; | |
302 | ||
303 | START_OF_INSTR(); | |
304 | DECODE_PRINTF("ADD\t"); | |
305 | FETCH_DECODE_MODRM(mod, rh, rl); | |
306 | switch (mod) { | |
307 | case 0: | |
308 | destreg = DECODE_RM_BYTE_REGISTER(rh); | |
309 | DECODE_PRINTF(","); | |
310 | srcoffset = decode_rm00_address(rl); | |
311 | srcval = fetch_data_byte(srcoffset); | |
312 | DECODE_PRINTF("\n"); | |
313 | TRACE_AND_STEP(); | |
314 | *destreg = add_byte(*destreg, srcval); | |
315 | break; | |
316 | case 1: | |
317 | destreg = DECODE_RM_BYTE_REGISTER(rh); | |
318 | DECODE_PRINTF(","); | |
319 | srcoffset = decode_rm01_address(rl); | |
320 | srcval = fetch_data_byte(srcoffset); | |
321 | DECODE_PRINTF("\n"); | |
322 | TRACE_AND_STEP(); | |
323 | *destreg = add_byte(*destreg, srcval); | |
324 | break; | |
325 | case 2: | |
326 | destreg = DECODE_RM_BYTE_REGISTER(rh); | |
327 | DECODE_PRINTF(","); | |
328 | srcoffset = decode_rm10_address(rl); | |
329 | srcval = fetch_data_byte(srcoffset); | |
330 | DECODE_PRINTF("\n"); | |
331 | TRACE_AND_STEP(); | |
332 | *destreg = add_byte(*destreg, srcval); | |
333 | break; | |
334 | case 3: /* register to register */ | |
335 | destreg = DECODE_RM_BYTE_REGISTER(rh); | |
336 | DECODE_PRINTF(","); | |
337 | srcreg = DECODE_RM_BYTE_REGISTER(rl); | |
338 | DECODE_PRINTF("\n"); | |
339 | TRACE_AND_STEP(); | |
340 | *destreg = add_byte(*destreg, *srcreg); | |
341 | break; | |
342 | } | |
343 | DECODE_CLEAR_SEGOVR(); | |
344 | END_OF_INSTR(); | |
345 | } | |
346 | ||
347 | /**************************************************************************** | |
348 | REMARKS: | |
349 | Handles opcode 0x03 | |
350 | ****************************************************************************/ | |
351 | static void | |
352 | x86emuOp_add_word_R_RM(u8 X86EMU_UNUSED(op1)) | |
353 | { | |
354 | int mod, rl, rh; | |
355 | uint srcoffset; | |
356 | ||
357 | START_OF_INSTR(); | |
358 | DECODE_PRINTF("ADD\t"); | |
359 | FETCH_DECODE_MODRM(mod, rh, rl); | |
360 | switch (mod) { | |
361 | case 0: | |
362 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
363 | u32 *destreg; | |
364 | u32 srcval; | |
365 | ||
366 | destreg = DECODE_RM_LONG_REGISTER(rh); | |
367 | DECODE_PRINTF(","); | |
368 | srcoffset = decode_rm00_address(rl); | |
369 | srcval = fetch_data_long(srcoffset); | |
370 | DECODE_PRINTF("\n"); | |
371 | TRACE_AND_STEP(); | |
372 | *destreg = add_long(*destreg, srcval); | |
373 | } | |
374 | else { | |
375 | u16 *destreg; | |
376 | u16 srcval; | |
377 | ||
378 | destreg = DECODE_RM_WORD_REGISTER(rh); | |
379 | DECODE_PRINTF(","); | |
380 | srcoffset = decode_rm00_address(rl); | |
381 | srcval = fetch_data_word(srcoffset); | |
382 | DECODE_PRINTF("\n"); | |
383 | TRACE_AND_STEP(); | |
384 | *destreg = add_word(*destreg, srcval); | |
385 | } | |
386 | break; | |
387 | case 1: | |
388 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
389 | u32 *destreg; | |
390 | u32 srcval; | |
391 | ||
392 | destreg = DECODE_RM_LONG_REGISTER(rh); | |
393 | DECODE_PRINTF(","); | |
394 | srcoffset = decode_rm01_address(rl); | |
395 | srcval = fetch_data_long(srcoffset); | |
396 | DECODE_PRINTF("\n"); | |
397 | TRACE_AND_STEP(); | |
398 | *destreg = add_long(*destreg, srcval); | |
399 | } | |
400 | else { | |
401 | u16 *destreg; | |
402 | u16 srcval; | |
403 | ||
404 | destreg = DECODE_RM_WORD_REGISTER(rh); | |
405 | DECODE_PRINTF(","); | |
406 | srcoffset = decode_rm01_address(rl); | |
407 | srcval = fetch_data_word(srcoffset); | |
408 | DECODE_PRINTF("\n"); | |
409 | TRACE_AND_STEP(); | |
410 | *destreg = add_word(*destreg, srcval); | |
411 | } | |
412 | break; | |
413 | case 2: | |
414 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
415 | u32 *destreg; | |
416 | u32 srcval; | |
417 | ||
418 | destreg = DECODE_RM_LONG_REGISTER(rh); | |
419 | DECODE_PRINTF(","); | |
420 | srcoffset = decode_rm10_address(rl); | |
421 | srcval = fetch_data_long(srcoffset); | |
422 | DECODE_PRINTF("\n"); | |
423 | TRACE_AND_STEP(); | |
424 | *destreg = add_long(*destreg, srcval); | |
425 | } | |
426 | else { | |
427 | u16 *destreg; | |
428 | u16 srcval; | |
429 | ||
430 | destreg = DECODE_RM_WORD_REGISTER(rh); | |
431 | DECODE_PRINTF(","); | |
432 | srcoffset = decode_rm10_address(rl); | |
433 | srcval = fetch_data_word(srcoffset); | |
434 | DECODE_PRINTF("\n"); | |
435 | TRACE_AND_STEP(); | |
436 | *destreg = add_word(*destreg, srcval); | |
437 | } | |
438 | break; | |
439 | case 3: /* register to register */ | |
440 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
441 | u32 *destreg, *srcreg; | |
442 | ||
443 | destreg = DECODE_RM_LONG_REGISTER(rh); | |
444 | DECODE_PRINTF(","); | |
445 | srcreg = DECODE_RM_LONG_REGISTER(rl); | |
446 | DECODE_PRINTF("\n"); | |
447 | TRACE_AND_STEP(); | |
448 | *destreg = add_long(*destreg, *srcreg); | |
449 | } | |
450 | else { | |
451 | u16 *destreg, *srcreg; | |
452 | ||
453 | destreg = DECODE_RM_WORD_REGISTER(rh); | |
454 | DECODE_PRINTF(","); | |
455 | srcreg = DECODE_RM_WORD_REGISTER(rl); | |
456 | DECODE_PRINTF("\n"); | |
457 | TRACE_AND_STEP(); | |
458 | *destreg = add_word(*destreg, *srcreg); | |
459 | } | |
460 | break; | |
461 | } | |
462 | DECODE_CLEAR_SEGOVR(); | |
463 | END_OF_INSTR(); | |
464 | } | |
465 | ||
466 | /**************************************************************************** | |
467 | REMARKS: | |
468 | Handles opcode 0x04 | |
469 | ****************************************************************************/ | |
470 | static void | |
471 | x86emuOp_add_byte_AL_IMM(u8 X86EMU_UNUSED(op1)) | |
472 | { | |
473 | u8 srcval; | |
474 | ||
475 | START_OF_INSTR(); | |
476 | DECODE_PRINTF("ADD\tAL,"); | |
477 | srcval = fetch_byte_imm(); | |
478 | DECODE_PRINTF2("%x\n", srcval); | |
479 | TRACE_AND_STEP(); | |
480 | M.x86.R_AL = add_byte(M.x86.R_AL, srcval); | |
481 | DECODE_CLEAR_SEGOVR(); | |
482 | END_OF_INSTR(); | |
483 | } | |
484 | ||
485 | /**************************************************************************** | |
486 | REMARKS: | |
487 | Handles opcode 0x05 | |
488 | ****************************************************************************/ | |
489 | static void | |
490 | x86emuOp_add_word_AX_IMM(u8 X86EMU_UNUSED(op1)) | |
491 | { | |
492 | u32 srcval; | |
493 | ||
494 | START_OF_INSTR(); | |
495 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
496 | DECODE_PRINTF("ADD\tEAX,"); | |
497 | srcval = fetch_long_imm(); | |
498 | } | |
499 | else { | |
500 | DECODE_PRINTF("ADD\tAX,"); | |
501 | srcval = fetch_word_imm(); | |
502 | } | |
503 | DECODE_PRINTF2("%x\n", srcval); | |
504 | TRACE_AND_STEP(); | |
505 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
506 | M.x86.R_EAX = add_long(M.x86.R_EAX, srcval); | |
507 | } | |
508 | else { | |
509 | M.x86.R_AX = add_word(M.x86.R_AX, (u16) srcval); | |
510 | } | |
511 | DECODE_CLEAR_SEGOVR(); | |
512 | END_OF_INSTR(); | |
513 | } | |
514 | ||
515 | /**************************************************************************** | |
516 | REMARKS: | |
517 | Handles opcode 0x06 | |
518 | ****************************************************************************/ | |
519 | static void | |
520 | x86emuOp_push_ES(u8 X86EMU_UNUSED(op1)) | |
521 | { | |
522 | START_OF_INSTR(); | |
523 | DECODE_PRINTF("PUSH\tES\n"); | |
524 | TRACE_AND_STEP(); | |
525 | push_word(M.x86.R_ES); | |
526 | DECODE_CLEAR_SEGOVR(); | |
527 | END_OF_INSTR(); | |
528 | } | |
529 | ||
530 | /**************************************************************************** | |
531 | REMARKS: | |
532 | Handles opcode 0x07 | |
533 | ****************************************************************************/ | |
534 | static void | |
535 | x86emuOp_pop_ES(u8 X86EMU_UNUSED(op1)) | |
536 | { | |
537 | START_OF_INSTR(); | |
538 | DECODE_PRINTF("POP\tES\n"); | |
539 | TRACE_AND_STEP(); | |
540 | M.x86.R_ES = pop_word(); | |
541 | DECODE_CLEAR_SEGOVR(); | |
542 | END_OF_INSTR(); | |
543 | } | |
544 | ||
545 | /**************************************************************************** | |
546 | REMARKS: | |
547 | Handles opcode 0x08 | |
548 | ****************************************************************************/ | |
549 | static void | |
550 | x86emuOp_or_byte_RM_R(u8 X86EMU_UNUSED(op1)) | |
551 | { | |
552 | int mod, rl, rh; | |
553 | u8 *destreg, *srcreg; | |
554 | uint destoffset; | |
555 | u8 destval; | |
556 | ||
557 | START_OF_INSTR(); | |
558 | DECODE_PRINTF("OR\t"); | |
559 | FETCH_DECODE_MODRM(mod, rh, rl); | |
560 | switch (mod) { | |
561 | case 0: | |
562 | destoffset = decode_rm00_address(rl); | |
563 | DECODE_PRINTF(","); | |
564 | destval = fetch_data_byte(destoffset); | |
565 | srcreg = DECODE_RM_BYTE_REGISTER(rh); | |
566 | DECODE_PRINTF("\n"); | |
567 | TRACE_AND_STEP(); | |
568 | destval = or_byte(destval, *srcreg); | |
569 | store_data_byte(destoffset, destval); | |
570 | break; | |
571 | case 1: | |
572 | destoffset = decode_rm01_address(rl); | |
573 | DECODE_PRINTF(","); | |
574 | destval = fetch_data_byte(destoffset); | |
575 | srcreg = DECODE_RM_BYTE_REGISTER(rh); | |
576 | DECODE_PRINTF("\n"); | |
577 | TRACE_AND_STEP(); | |
578 | destval = or_byte(destval, *srcreg); | |
579 | store_data_byte(destoffset, destval); | |
580 | break; | |
581 | case 2: | |
582 | destoffset = decode_rm10_address(rl); | |
583 | DECODE_PRINTF(","); | |
584 | destval = fetch_data_byte(destoffset); | |
585 | srcreg = DECODE_RM_BYTE_REGISTER(rh); | |
586 | DECODE_PRINTF("\n"); | |
587 | TRACE_AND_STEP(); | |
588 | destval = or_byte(destval, *srcreg); | |
589 | store_data_byte(destoffset, destval); | |
590 | break; | |
591 | case 3: /* register to register */ | |
592 | destreg = DECODE_RM_BYTE_REGISTER(rl); | |
593 | DECODE_PRINTF(","); | |
594 | srcreg = DECODE_RM_BYTE_REGISTER(rh); | |
595 | DECODE_PRINTF("\n"); | |
596 | TRACE_AND_STEP(); | |
597 | *destreg = or_byte(*destreg, *srcreg); | |
598 | break; | |
599 | } | |
600 | DECODE_CLEAR_SEGOVR(); | |
601 | END_OF_INSTR(); | |
602 | } | |
603 | ||
604 | /**************************************************************************** | |
605 | REMARKS: | |
606 | Handles opcode 0x09 | |
607 | ****************************************************************************/ | |
608 | static void | |
609 | x86emuOp_or_word_RM_R(u8 X86EMU_UNUSED(op1)) | |
610 | { | |
611 | int mod, rl, rh; | |
612 | uint destoffset; | |
613 | ||
614 | START_OF_INSTR(); | |
615 | DECODE_PRINTF("OR\t"); | |
616 | FETCH_DECODE_MODRM(mod, rh, rl); | |
617 | switch (mod) { | |
618 | case 0: | |
619 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
620 | u32 destval; | |
621 | u32 *srcreg; | |
622 | ||
623 | destoffset = decode_rm00_address(rl); | |
624 | DECODE_PRINTF(","); | |
625 | destval = fetch_data_long(destoffset); | |
626 | srcreg = DECODE_RM_LONG_REGISTER(rh); | |
627 | DECODE_PRINTF("\n"); | |
628 | TRACE_AND_STEP(); | |
629 | destval = or_long(destval, *srcreg); | |
630 | store_data_long(destoffset, destval); | |
631 | } | |
632 | else { | |
633 | u16 destval; | |
634 | u16 *srcreg; | |
635 | ||
636 | destoffset = decode_rm00_address(rl); | |
637 | DECODE_PRINTF(","); | |
638 | destval = fetch_data_word(destoffset); | |
639 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
640 | DECODE_PRINTF("\n"); | |
641 | TRACE_AND_STEP(); | |
642 | destval = or_word(destval, *srcreg); | |
643 | store_data_word(destoffset, destval); | |
644 | } | |
645 | break; | |
646 | case 1: | |
647 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
648 | u32 destval; | |
649 | u32 *srcreg; | |
650 | ||
651 | destoffset = decode_rm01_address(rl); | |
652 | DECODE_PRINTF(","); | |
653 | destval = fetch_data_long(destoffset); | |
654 | srcreg = DECODE_RM_LONG_REGISTER(rh); | |
655 | DECODE_PRINTF("\n"); | |
656 | TRACE_AND_STEP(); | |
657 | destval = or_long(destval, *srcreg); | |
658 | store_data_long(destoffset, destval); | |
659 | } | |
660 | else { | |
661 | u16 destval; | |
662 | u16 *srcreg; | |
663 | ||
664 | destoffset = decode_rm01_address(rl); | |
665 | DECODE_PRINTF(","); | |
666 | destval = fetch_data_word(destoffset); | |
667 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
668 | DECODE_PRINTF("\n"); | |
669 | TRACE_AND_STEP(); | |
670 | destval = or_word(destval, *srcreg); | |
671 | store_data_word(destoffset, destval); | |
672 | } | |
673 | break; | |
674 | case 2: | |
675 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
676 | u32 destval; | |
677 | u32 *srcreg; | |
678 | ||
679 | destoffset = decode_rm10_address(rl); | |
680 | DECODE_PRINTF(","); | |
681 | destval = fetch_data_long(destoffset); | |
682 | srcreg = DECODE_RM_LONG_REGISTER(rh); | |
683 | DECODE_PRINTF("\n"); | |
684 | TRACE_AND_STEP(); | |
685 | destval = or_long(destval, *srcreg); | |
686 | store_data_long(destoffset, destval); | |
687 | } | |
688 | else { | |
689 | u16 destval; | |
690 | u16 *srcreg; | |
691 | ||
692 | destoffset = decode_rm10_address(rl); | |
693 | DECODE_PRINTF(","); | |
694 | destval = fetch_data_word(destoffset); | |
695 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
696 | DECODE_PRINTF("\n"); | |
697 | TRACE_AND_STEP(); | |
698 | destval = or_word(destval, *srcreg); | |
699 | store_data_word(destoffset, destval); | |
700 | } | |
701 | break; | |
702 | case 3: /* register to register */ | |
703 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
704 | u32 *destreg, *srcreg; | |
705 | ||
706 | destreg = DECODE_RM_LONG_REGISTER(rl); | |
707 | DECODE_PRINTF(","); | |
708 | srcreg = DECODE_RM_LONG_REGISTER(rh); | |
709 | DECODE_PRINTF("\n"); | |
710 | TRACE_AND_STEP(); | |
711 | *destreg = or_long(*destreg, *srcreg); | |
712 | } | |
713 | else { | |
714 | u16 *destreg, *srcreg; | |
715 | ||
716 | destreg = DECODE_RM_WORD_REGISTER(rl); | |
717 | DECODE_PRINTF(","); | |
718 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
719 | DECODE_PRINTF("\n"); | |
720 | TRACE_AND_STEP(); | |
721 | *destreg = or_word(*destreg, *srcreg); | |
722 | } | |
723 | break; | |
724 | } | |
725 | DECODE_CLEAR_SEGOVR(); | |
726 | END_OF_INSTR(); | |
727 | } | |
728 | ||
729 | /**************************************************************************** | |
730 | REMARKS: | |
731 | Handles opcode 0x0a | |
732 | ****************************************************************************/ | |
733 | static void | |
734 | x86emuOp_or_byte_R_RM(u8 X86EMU_UNUSED(op1)) | |
735 | { | |
736 | int mod, rl, rh; | |
737 | u8 *destreg, *srcreg; | |
738 | uint srcoffset; | |
739 | u8 srcval; | |
740 | ||
741 | START_OF_INSTR(); | |
742 | DECODE_PRINTF("OR\t"); | |
743 | FETCH_DECODE_MODRM(mod, rh, rl); | |
744 | switch (mod) { | |
745 | case 0: | |
746 | destreg = DECODE_RM_BYTE_REGISTER(rh); | |
747 | DECODE_PRINTF(","); | |
748 | srcoffset = decode_rm00_address(rl); | |
749 | srcval = fetch_data_byte(srcoffset); | |
750 | DECODE_PRINTF("\n"); | |
751 | TRACE_AND_STEP(); | |
752 | *destreg = or_byte(*destreg, srcval); | |
753 | break; | |
754 | case 1: | |
755 | destreg = DECODE_RM_BYTE_REGISTER(rh); | |
756 | DECODE_PRINTF(","); | |
757 | srcoffset = decode_rm01_address(rl); | |
758 | srcval = fetch_data_byte(srcoffset); | |
759 | DECODE_PRINTF("\n"); | |
760 | TRACE_AND_STEP(); | |
761 | *destreg = or_byte(*destreg, srcval); | |
762 | break; | |
763 | case 2: | |
764 | destreg = DECODE_RM_BYTE_REGISTER(rh); | |
765 | DECODE_PRINTF(","); | |
766 | srcoffset = decode_rm10_address(rl); | |
767 | srcval = fetch_data_byte(srcoffset); | |
768 | DECODE_PRINTF("\n"); | |
769 | TRACE_AND_STEP(); | |
770 | *destreg = or_byte(*destreg, srcval); | |
771 | break; | |
772 | case 3: /* register to register */ | |
773 | destreg = DECODE_RM_BYTE_REGISTER(rh); | |
774 | DECODE_PRINTF(","); | |
775 | srcreg = DECODE_RM_BYTE_REGISTER(rl); | |
776 | DECODE_PRINTF("\n"); | |
777 | TRACE_AND_STEP(); | |
778 | *destreg = or_byte(*destreg, *srcreg); | |
779 | break; | |
780 | } | |
781 | DECODE_CLEAR_SEGOVR(); | |
782 | END_OF_INSTR(); | |
783 | } | |
784 | ||
785 | /**************************************************************************** | |
786 | REMARKS: | |
787 | Handles opcode 0x0b | |
788 | ****************************************************************************/ | |
789 | static void | |
790 | x86emuOp_or_word_R_RM(u8 X86EMU_UNUSED(op1)) | |
791 | { | |
792 | int mod, rl, rh; | |
793 | uint srcoffset; | |
794 | ||
795 | START_OF_INSTR(); | |
796 | DECODE_PRINTF("OR\t"); | |
797 | FETCH_DECODE_MODRM(mod, rh, rl); | |
798 | switch (mod) { | |
799 | case 0: | |
800 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
801 | u32 *destreg; | |
802 | u32 srcval; | |
803 | ||
804 | destreg = DECODE_RM_LONG_REGISTER(rh); | |
805 | DECODE_PRINTF(","); | |
806 | srcoffset = decode_rm00_address(rl); | |
807 | srcval = fetch_data_long(srcoffset); | |
808 | DECODE_PRINTF("\n"); | |
809 | TRACE_AND_STEP(); | |
810 | *destreg = or_long(*destreg, srcval); | |
811 | } | |
812 | else { | |
813 | u16 *destreg; | |
814 | u16 srcval; | |
815 | ||
816 | destreg = DECODE_RM_WORD_REGISTER(rh); | |
817 | DECODE_PRINTF(","); | |
818 | srcoffset = decode_rm00_address(rl); | |
819 | srcval = fetch_data_word(srcoffset); | |
820 | DECODE_PRINTF("\n"); | |
821 | TRACE_AND_STEP(); | |
822 | *destreg = or_word(*destreg, srcval); | |
823 | } | |
824 | break; | |
825 | case 1: | |
826 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
827 | u32 *destreg; | |
828 | u32 srcval; | |
829 | ||
830 | destreg = DECODE_RM_LONG_REGISTER(rh); | |
831 | DECODE_PRINTF(","); | |
832 | srcoffset = decode_rm01_address(rl); | |
833 | srcval = fetch_data_long(srcoffset); | |
834 | DECODE_PRINTF("\n"); | |
835 | TRACE_AND_STEP(); | |
836 | *destreg = or_long(*destreg, srcval); | |
837 | } | |
838 | else { | |
839 | u16 *destreg; | |
840 | u16 srcval; | |
841 | ||
842 | destreg = DECODE_RM_WORD_REGISTER(rh); | |
843 | DECODE_PRINTF(","); | |
844 | srcoffset = decode_rm01_address(rl); | |
845 | srcval = fetch_data_word(srcoffset); | |
846 | DECODE_PRINTF("\n"); | |
847 | TRACE_AND_STEP(); | |
848 | *destreg = or_word(*destreg, srcval); | |
849 | } | |
850 | break; | |
851 | case 2: | |
852 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
853 | u32 *destreg; | |
854 | u32 srcval; | |
855 | ||
856 | destreg = DECODE_RM_LONG_REGISTER(rh); | |
857 | DECODE_PRINTF(","); | |
858 | srcoffset = decode_rm10_address(rl); | |
859 | srcval = fetch_data_long(srcoffset); | |
860 | DECODE_PRINTF("\n"); | |
861 | TRACE_AND_STEP(); | |
862 | *destreg = or_long(*destreg, srcval); | |
863 | } | |
864 | else { | |
865 | u16 *destreg; | |
866 | u16 srcval; | |
867 | ||
868 | destreg = DECODE_RM_WORD_REGISTER(rh); | |
869 | DECODE_PRINTF(","); | |
870 | srcoffset = decode_rm10_address(rl); | |
871 | srcval = fetch_data_word(srcoffset); | |
872 | DECODE_PRINTF("\n"); | |
873 | TRACE_AND_STEP(); | |
874 | *destreg = or_word(*destreg, srcval); | |
875 | } | |
876 | break; | |
877 | case 3: /* register to register */ | |
878 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
879 | u32 *destreg, *srcreg; | |
880 | ||
881 | destreg = DECODE_RM_LONG_REGISTER(rh); | |
882 | DECODE_PRINTF(","); | |
883 | srcreg = DECODE_RM_LONG_REGISTER(rl); | |
884 | DECODE_PRINTF("\n"); | |
885 | TRACE_AND_STEP(); | |
886 | *destreg = or_long(*destreg, *srcreg); | |
887 | } | |
888 | else { | |
889 | u16 *destreg, *srcreg; | |
890 | ||
891 | destreg = DECODE_RM_WORD_REGISTER(rh); | |
892 | DECODE_PRINTF(","); | |
893 | srcreg = DECODE_RM_WORD_REGISTER(rl); | |
894 | DECODE_PRINTF("\n"); | |
895 | TRACE_AND_STEP(); | |
896 | *destreg = or_word(*destreg, *srcreg); | |
897 | } | |
898 | break; | |
899 | } | |
900 | DECODE_CLEAR_SEGOVR(); | |
901 | END_OF_INSTR(); | |
902 | } | |
903 | ||
904 | /**************************************************************************** | |
905 | REMARKS: | |
906 | Handles opcode 0x0c | |
907 | ****************************************************************************/ | |
908 | static void | |
909 | x86emuOp_or_byte_AL_IMM(u8 X86EMU_UNUSED(op1)) | |
910 | { | |
911 | u8 srcval; | |
912 | ||
913 | START_OF_INSTR(); | |
914 | DECODE_PRINTF("OR\tAL,"); | |
915 | srcval = fetch_byte_imm(); | |
916 | DECODE_PRINTF2("%x\n", srcval); | |
917 | TRACE_AND_STEP(); | |
918 | M.x86.R_AL = or_byte(M.x86.R_AL, srcval); | |
919 | DECODE_CLEAR_SEGOVR(); | |
920 | END_OF_INSTR(); | |
921 | } | |
922 | ||
923 | /**************************************************************************** | |
924 | REMARKS: | |
925 | Handles opcode 0x0d | |
926 | ****************************************************************************/ | |
927 | static void | |
928 | x86emuOp_or_word_AX_IMM(u8 X86EMU_UNUSED(op1)) | |
929 | { | |
930 | u32 srcval; | |
931 | ||
932 | START_OF_INSTR(); | |
933 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
934 | DECODE_PRINTF("OR\tEAX,"); | |
935 | srcval = fetch_long_imm(); | |
936 | } | |
937 | else { | |
938 | DECODE_PRINTF("OR\tAX,"); | |
939 | srcval = fetch_word_imm(); | |
940 | } | |
941 | DECODE_PRINTF2("%x\n", srcval); | |
942 | TRACE_AND_STEP(); | |
943 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
944 | M.x86.R_EAX = or_long(M.x86.R_EAX, srcval); | |
945 | } | |
946 | else { | |
947 | M.x86.R_AX = or_word(M.x86.R_AX, (u16) srcval); | |
948 | } | |
949 | DECODE_CLEAR_SEGOVR(); | |
950 | END_OF_INSTR(); | |
951 | } | |
952 | ||
953 | /**************************************************************************** | |
954 | REMARKS: | |
955 | Handles opcode 0x0e | |
956 | ****************************************************************************/ | |
957 | static void | |
958 | x86emuOp_push_CS(u8 X86EMU_UNUSED(op1)) | |
959 | { | |
960 | START_OF_INSTR(); | |
961 | DECODE_PRINTF("PUSH\tCS\n"); | |
962 | TRACE_AND_STEP(); | |
963 | push_word(M.x86.R_CS); | |
964 | DECODE_CLEAR_SEGOVR(); | |
965 | END_OF_INSTR(); | |
966 | } | |
967 | ||
968 | /**************************************************************************** | |
969 | REMARKS: | |
970 | Handles opcode 0x0f. Escape for two-byte opcode (286 or better) | |
971 | ****************************************************************************/ | |
972 | static void | |
973 | x86emuOp_two_byte(u8 X86EMU_UNUSED(op1)) | |
974 | { | |
975 | u8 op2 = (*sys_rdb) (((u32) M.x86.R_CS << 4) + (M.x86.R_IP++)); | |
976 | ||
977 | INC_DECODED_INST_LEN(1); | |
978 | (*x86emu_optab2[op2]) (op2); | |
979 | } | |
980 | ||
981 | /**************************************************************************** | |
982 | REMARKS: | |
983 | Handles opcode 0x10 | |
984 | ****************************************************************************/ | |
985 | static void | |
986 | x86emuOp_adc_byte_RM_R(u8 X86EMU_UNUSED(op1)) | |
987 | { | |
988 | int mod, rl, rh; | |
989 | u8 *destreg, *srcreg; | |
990 | uint destoffset; | |
991 | u8 destval; | |
992 | ||
993 | START_OF_INSTR(); | |
994 | DECODE_PRINTF("ADC\t"); | |
995 | FETCH_DECODE_MODRM(mod, rh, rl); | |
996 | switch (mod) { | |
997 | case 0: | |
998 | destoffset = decode_rm00_address(rl); | |
999 | DECODE_PRINTF(","); | |
1000 | destval = fetch_data_byte(destoffset); | |
1001 | srcreg = DECODE_RM_BYTE_REGISTER(rh); | |
1002 | DECODE_PRINTF("\n"); | |
1003 | TRACE_AND_STEP(); | |
1004 | destval = adc_byte(destval, *srcreg); | |
1005 | store_data_byte(destoffset, destval); | |
1006 | break; | |
1007 | case 1: | |
1008 | destoffset = decode_rm01_address(rl); | |
1009 | DECODE_PRINTF(","); | |
1010 | destval = fetch_data_byte(destoffset); | |
1011 | srcreg = DECODE_RM_BYTE_REGISTER(rh); | |
1012 | DECODE_PRINTF("\n"); | |
1013 | TRACE_AND_STEP(); | |
1014 | destval = adc_byte(destval, *srcreg); | |
1015 | store_data_byte(destoffset, destval); | |
1016 | break; | |
1017 | case 2: | |
1018 | destoffset = decode_rm10_address(rl); | |
1019 | DECODE_PRINTF(","); | |
1020 | destval = fetch_data_byte(destoffset); | |
1021 | srcreg = DECODE_RM_BYTE_REGISTER(rh); | |
1022 | DECODE_PRINTF("\n"); | |
1023 | TRACE_AND_STEP(); | |
1024 | destval = adc_byte(destval, *srcreg); | |
1025 | store_data_byte(destoffset, destval); | |
1026 | break; | |
1027 | case 3: /* register to register */ | |
1028 | destreg = DECODE_RM_BYTE_REGISTER(rl); | |
1029 | DECODE_PRINTF(","); | |
1030 | srcreg = DECODE_RM_BYTE_REGISTER(rh); | |
1031 | DECODE_PRINTF("\n"); | |
1032 | TRACE_AND_STEP(); | |
1033 | *destreg = adc_byte(*destreg, *srcreg); | |
1034 | break; | |
1035 | } | |
1036 | DECODE_CLEAR_SEGOVR(); | |
1037 | END_OF_INSTR(); | |
1038 | } | |
1039 | ||
1040 | /**************************************************************************** | |
1041 | REMARKS: | |
1042 | Handles opcode 0x11 | |
1043 | ****************************************************************************/ | |
1044 | static void | |
1045 | x86emuOp_adc_word_RM_R(u8 X86EMU_UNUSED(op1)) | |
1046 | { | |
1047 | int mod, rl, rh; | |
1048 | uint destoffset; | |
1049 | ||
1050 | START_OF_INSTR(); | |
1051 | DECODE_PRINTF("ADC\t"); | |
1052 | FETCH_DECODE_MODRM(mod, rh, rl); | |
1053 | switch (mod) { | |
1054 | case 0: | |
1055 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
1056 | u32 destval; | |
1057 | u32 *srcreg; | |
1058 | ||
1059 | destoffset = decode_rm00_address(rl); | |
1060 | DECODE_PRINTF(","); | |
1061 | destval = fetch_data_long(destoffset); | |
1062 | srcreg = DECODE_RM_LONG_REGISTER(rh); | |
1063 | DECODE_PRINTF("\n"); | |
1064 | TRACE_AND_STEP(); | |
1065 | destval = adc_long(destval, *srcreg); | |
1066 | store_data_long(destoffset, destval); | |
1067 | } | |
1068 | else { | |
1069 | u16 destval; | |
1070 | u16 *srcreg; | |
1071 | ||
1072 | destoffset = decode_rm00_address(rl); | |
1073 | DECODE_PRINTF(","); | |
1074 | destval = fetch_data_word(destoffset); | |
1075 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
1076 | DECODE_PRINTF("\n"); | |
1077 | TRACE_AND_STEP(); | |
1078 | destval = adc_word(destval, *srcreg); | |
1079 | store_data_word(destoffset, destval); | |
1080 | } | |
1081 | break; | |
1082 | case 1: | |
1083 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
1084 | u32 destval; | |
1085 | u32 *srcreg; | |
1086 | ||
1087 | destoffset = decode_rm01_address(rl); | |
1088 | DECODE_PRINTF(","); | |
1089 | destval = fetch_data_long(destoffset); | |
1090 | srcreg = DECODE_RM_LONG_REGISTER(rh); | |
1091 | DECODE_PRINTF("\n"); | |
1092 | TRACE_AND_STEP(); | |
1093 | destval = adc_long(destval, *srcreg); | |
1094 | store_data_long(destoffset, destval); | |
1095 | } | |
1096 | else { | |
1097 | u16 destval; | |
1098 | u16 *srcreg; | |
1099 | ||
1100 | destoffset = decode_rm01_address(rl); | |
1101 | DECODE_PRINTF(","); | |
1102 | destval = fetch_data_word(destoffset); | |
1103 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
1104 | DECODE_PRINTF("\n"); | |
1105 | TRACE_AND_STEP(); | |
1106 | destval = adc_word(destval, *srcreg); | |
1107 | store_data_word(destoffset, destval); | |
1108 | } | |
1109 | break; | |
1110 | case 2: | |
1111 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
1112 | u32 destval; | |
1113 | u32 *srcreg; | |
1114 | ||
1115 | destoffset = decode_rm10_address(rl); | |
1116 | DECODE_PRINTF(","); | |
1117 | destval = fetch_data_long(destoffset); | |
1118 | srcreg = DECODE_RM_LONG_REGISTER(rh); | |
1119 | DECODE_PRINTF("\n"); | |
1120 | TRACE_AND_STEP(); | |
1121 | destval = adc_long(destval, *srcreg); | |
1122 | store_data_long(destoffset, destval); | |
1123 | } | |
1124 | else { | |
1125 | u16 destval; | |
1126 | u16 *srcreg; | |
1127 | ||
1128 | destoffset = decode_rm10_address(rl); | |
1129 | DECODE_PRINTF(","); | |
1130 | destval = fetch_data_word(destoffset); | |
1131 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
1132 | DECODE_PRINTF("\n"); | |
1133 | TRACE_AND_STEP(); | |
1134 | destval = adc_word(destval, *srcreg); | |
1135 | store_data_word(destoffset, destval); | |
1136 | } | |
1137 | break; | |
1138 | case 3: /* register to register */ | |
1139 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
1140 | u32 *destreg, *srcreg; | |
1141 | ||
1142 | destreg = DECODE_RM_LONG_REGISTER(rl); | |
1143 | DECODE_PRINTF(","); | |
1144 | srcreg = DECODE_RM_LONG_REGISTER(rh); | |
1145 | DECODE_PRINTF("\n"); | |
1146 | TRACE_AND_STEP(); | |
1147 | *destreg = adc_long(*destreg, *srcreg); | |
1148 | } | |
1149 | else { | |
1150 | u16 *destreg, *srcreg; | |
1151 | ||
1152 | destreg = DECODE_RM_WORD_REGISTER(rl); | |
1153 | DECODE_PRINTF(","); | |
1154 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
1155 | DECODE_PRINTF("\n"); | |
1156 | TRACE_AND_STEP(); | |
1157 | *destreg = adc_word(*destreg, *srcreg); | |
1158 | } | |
1159 | break; | |
1160 | } | |
1161 | DECODE_CLEAR_SEGOVR(); | |
1162 | END_OF_INSTR(); | |
1163 | } | |
1164 | ||
1165 | /**************************************************************************** | |
1166 | REMARKS: | |
1167 | Handles opcode 0x12 | |
1168 | ****************************************************************************/ | |
1169 | static void | |
1170 | x86emuOp_adc_byte_R_RM(u8 X86EMU_UNUSED(op1)) | |
1171 | { | |
1172 | int mod, rl, rh; | |
1173 | u8 *destreg, *srcreg; | |
1174 | uint srcoffset; | |
1175 | u8 srcval; | |
1176 | ||
1177 | START_OF_INSTR(); | |
1178 | DECODE_PRINTF("ADC\t"); | |
1179 | FETCH_DECODE_MODRM(mod, rh, rl); | |
1180 | switch (mod) { | |
1181 | case 0: | |
1182 | destreg = DECODE_RM_BYTE_REGISTER(rh); | |
1183 | DECODE_PRINTF(","); | |
1184 | srcoffset = decode_rm00_address(rl); | |
1185 | srcval = fetch_data_byte(srcoffset); | |
1186 | DECODE_PRINTF("\n"); | |
1187 | TRACE_AND_STEP(); | |
1188 | *destreg = adc_byte(*destreg, srcval); | |
1189 | break; | |
1190 | case 1: | |
1191 | destreg = DECODE_RM_BYTE_REGISTER(rh); | |
1192 | DECODE_PRINTF(","); | |
1193 | srcoffset = decode_rm01_address(rl); | |
1194 | srcval = fetch_data_byte(srcoffset); | |
1195 | DECODE_PRINTF("\n"); | |
1196 | TRACE_AND_STEP(); | |
1197 | *destreg = adc_byte(*destreg, srcval); | |
1198 | break; | |
1199 | case 2: | |
1200 | destreg = DECODE_RM_BYTE_REGISTER(rh); | |
1201 | DECODE_PRINTF(","); | |
1202 | srcoffset = decode_rm10_address(rl); | |
1203 | srcval = fetch_data_byte(srcoffset); | |
1204 | DECODE_PRINTF("\n"); | |
1205 | TRACE_AND_STEP(); | |
1206 | *destreg = adc_byte(*destreg, srcval); | |
1207 | break; | |
1208 | case 3: /* register to register */ | |
1209 | destreg = DECODE_RM_BYTE_REGISTER(rh); | |
1210 | DECODE_PRINTF(","); | |
1211 | srcreg = DECODE_RM_BYTE_REGISTER(rl); | |
1212 | DECODE_PRINTF("\n"); | |
1213 | TRACE_AND_STEP(); | |
1214 | *destreg = adc_byte(*destreg, *srcreg); | |
1215 | break; | |
1216 | } | |
1217 | DECODE_CLEAR_SEGOVR(); | |
1218 | END_OF_INSTR(); | |
1219 | } | |
1220 | ||
1221 | /**************************************************************************** | |
1222 | REMARKS: | |
1223 | Handles opcode 0x13 | |
1224 | ****************************************************************************/ | |
1225 | static void | |
1226 | x86emuOp_adc_word_R_RM(u8 X86EMU_UNUSED(op1)) | |
1227 | { | |
1228 | int mod, rl, rh; | |
1229 | uint srcoffset; | |
1230 | ||
1231 | START_OF_INSTR(); | |
1232 | DECODE_PRINTF("ADC\t"); | |
1233 | FETCH_DECODE_MODRM(mod, rh, rl); | |
1234 | switch (mod) { | |
1235 | case 0: | |
1236 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
1237 | u32 *destreg; | |
1238 | u32 srcval; | |
1239 | ||
1240 | destreg = DECODE_RM_LONG_REGISTER(rh); | |
1241 | DECODE_PRINTF(","); | |
1242 | srcoffset = decode_rm00_address(rl); | |
1243 | srcval = fetch_data_long(srcoffset); | |
1244 | DECODE_PRINTF("\n"); | |
1245 | TRACE_AND_STEP(); | |
1246 | *destreg = adc_long(*destreg, srcval); | |
1247 | } | |
1248 | else { | |
1249 | u16 *destreg; | |
1250 | u16 srcval; | |
1251 | ||
1252 | destreg = DECODE_RM_WORD_REGISTER(rh); | |
1253 | DECODE_PRINTF(","); | |
1254 | srcoffset = decode_rm00_address(rl); | |
1255 | srcval = fetch_data_word(srcoffset); | |
1256 | DECODE_PRINTF("\n"); | |
1257 | TRACE_AND_STEP(); | |
1258 | *destreg = adc_word(*destreg, srcval); | |
1259 | } | |
1260 | break; | |
1261 | case 1: | |
1262 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
1263 | u32 *destreg; | |
1264 | u32 srcval; | |
1265 | ||
1266 | destreg = DECODE_RM_LONG_REGISTER(rh); | |
1267 | DECODE_PRINTF(","); | |
1268 | srcoffset = decode_rm01_address(rl); | |
1269 | srcval = fetch_data_long(srcoffset); | |
1270 | DECODE_PRINTF("\n"); | |
1271 | TRACE_AND_STEP(); | |
1272 | *destreg = adc_long(*destreg, srcval); | |
1273 | } | |
1274 | else { | |
1275 | u16 *destreg; | |
1276 | u16 srcval; | |
1277 | ||
1278 | destreg = DECODE_RM_WORD_REGISTER(rh); | |
1279 | DECODE_PRINTF(","); | |
1280 | srcoffset = decode_rm01_address(rl); | |
1281 | srcval = fetch_data_word(srcoffset); | |
1282 | DECODE_PRINTF("\n"); | |
1283 | TRACE_AND_STEP(); | |
1284 | *destreg = adc_word(*destreg, srcval); | |
1285 | } | |
1286 | break; | |
1287 | case 2: | |
1288 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
1289 | u32 *destreg; | |
1290 | u32 srcval; | |
1291 | ||
1292 | destreg = DECODE_RM_LONG_REGISTER(rh); | |
1293 | DECODE_PRINTF(","); | |
1294 | srcoffset = decode_rm10_address(rl); | |
1295 | srcval = fetch_data_long(srcoffset); | |
1296 | DECODE_PRINTF("\n"); | |
1297 | TRACE_AND_STEP(); | |
1298 | *destreg = adc_long(*destreg, srcval); | |
1299 | } | |
1300 | else { | |
1301 | u16 *destreg; | |
1302 | u16 srcval; | |
1303 | ||
1304 | destreg = DECODE_RM_WORD_REGISTER(rh); | |
1305 | DECODE_PRINTF(","); | |
1306 | srcoffset = decode_rm10_address(rl); | |
1307 | srcval = fetch_data_word(srcoffset); | |
1308 | DECODE_PRINTF("\n"); | |
1309 | TRACE_AND_STEP(); | |
1310 | *destreg = adc_word(*destreg, srcval); | |
1311 | } | |
1312 | break; | |
1313 | case 3: /* register to register */ | |
1314 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
1315 | u32 *destreg, *srcreg; | |
1316 | ||
1317 | destreg = DECODE_RM_LONG_REGISTER(rh); | |
1318 | DECODE_PRINTF(","); | |
1319 | srcreg = DECODE_RM_LONG_REGISTER(rl); | |
1320 | DECODE_PRINTF("\n"); | |
1321 | TRACE_AND_STEP(); | |
1322 | *destreg = adc_long(*destreg, *srcreg); | |
1323 | } | |
1324 | else { | |
1325 | u16 *destreg, *srcreg; | |
1326 | ||
1327 | destreg = DECODE_RM_WORD_REGISTER(rh); | |
1328 | DECODE_PRINTF(","); | |
1329 | srcreg = DECODE_RM_WORD_REGISTER(rl); | |
1330 | DECODE_PRINTF("\n"); | |
1331 | TRACE_AND_STEP(); | |
1332 | *destreg = adc_word(*destreg, *srcreg); | |
1333 | } | |
1334 | break; | |
1335 | } | |
1336 | DECODE_CLEAR_SEGOVR(); | |
1337 | END_OF_INSTR(); | |
1338 | } | |
1339 | ||
1340 | /**************************************************************************** | |
1341 | REMARKS: | |
1342 | Handles opcode 0x14 | |
1343 | ****************************************************************************/ | |
1344 | static void | |
1345 | x86emuOp_adc_byte_AL_IMM(u8 X86EMU_UNUSED(op1)) | |
1346 | { | |
1347 | u8 srcval; | |
1348 | ||
1349 | START_OF_INSTR(); | |
1350 | DECODE_PRINTF("ADC\tAL,"); | |
1351 | srcval = fetch_byte_imm(); | |
1352 | DECODE_PRINTF2("%x\n", srcval); | |
1353 | TRACE_AND_STEP(); | |
1354 | M.x86.R_AL = adc_byte(M.x86.R_AL, srcval); | |
1355 | DECODE_CLEAR_SEGOVR(); | |
1356 | END_OF_INSTR(); | |
1357 | } | |
1358 | ||
1359 | /**************************************************************************** | |
1360 | REMARKS: | |
1361 | Handles opcode 0x15 | |
1362 | ****************************************************************************/ | |
1363 | static void | |
1364 | x86emuOp_adc_word_AX_IMM(u8 X86EMU_UNUSED(op1)) | |
1365 | { | |
1366 | u32 srcval; | |
1367 | ||
1368 | START_OF_INSTR(); | |
1369 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
1370 | DECODE_PRINTF("ADC\tEAX,"); | |
1371 | srcval = fetch_long_imm(); | |
1372 | } | |
1373 | else { | |
1374 | DECODE_PRINTF("ADC\tAX,"); | |
1375 | srcval = fetch_word_imm(); | |
1376 | } | |
1377 | DECODE_PRINTF2("%x\n", srcval); | |
1378 | TRACE_AND_STEP(); | |
1379 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
1380 | M.x86.R_EAX = adc_long(M.x86.R_EAX, srcval); | |
1381 | } | |
1382 | else { | |
1383 | M.x86.R_AX = adc_word(M.x86.R_AX, (u16) srcval); | |
1384 | } | |
1385 | DECODE_CLEAR_SEGOVR(); | |
1386 | END_OF_INSTR(); | |
1387 | } | |
1388 | ||
1389 | /**************************************************************************** | |
1390 | REMARKS: | |
1391 | Handles opcode 0x16 | |
1392 | ****************************************************************************/ | |
1393 | static void | |
1394 | x86emuOp_push_SS(u8 X86EMU_UNUSED(op1)) | |
1395 | { | |
1396 | START_OF_INSTR(); | |
1397 | DECODE_PRINTF("PUSH\tSS\n"); | |
1398 | TRACE_AND_STEP(); | |
1399 | push_word(M.x86.R_SS); | |
1400 | DECODE_CLEAR_SEGOVR(); | |
1401 | END_OF_INSTR(); | |
1402 | } | |
1403 | ||
1404 | /**************************************************************************** | |
1405 | REMARKS: | |
1406 | Handles opcode 0x17 | |
1407 | ****************************************************************************/ | |
1408 | static void | |
1409 | x86emuOp_pop_SS(u8 X86EMU_UNUSED(op1)) | |
1410 | { | |
1411 | START_OF_INSTR(); | |
1412 | DECODE_PRINTF("POP\tSS\n"); | |
1413 | TRACE_AND_STEP(); | |
1414 | M.x86.R_SS = pop_word(); | |
1415 | DECODE_CLEAR_SEGOVR(); | |
1416 | END_OF_INSTR(); | |
1417 | } | |
1418 | ||
1419 | /**************************************************************************** | |
1420 | REMARKS: | |
1421 | Handles opcode 0x18 | |
1422 | ****************************************************************************/ | |
1423 | static void | |
1424 | x86emuOp_sbb_byte_RM_R(u8 X86EMU_UNUSED(op1)) | |
1425 | { | |
1426 | int mod, rl, rh; | |
1427 | u8 *destreg, *srcreg; | |
1428 | uint destoffset; | |
1429 | u8 destval; | |
1430 | ||
1431 | START_OF_INSTR(); | |
1432 | DECODE_PRINTF("SBB\t"); | |
1433 | FETCH_DECODE_MODRM(mod, rh, rl); | |
1434 | switch (mod) { | |
1435 | case 0: | |
1436 | destoffset = decode_rm00_address(rl); | |
1437 | DECODE_PRINTF(","); | |
1438 | destval = fetch_data_byte(destoffset); | |
1439 | srcreg = DECODE_RM_BYTE_REGISTER(rh); | |
1440 | DECODE_PRINTF("\n"); | |
1441 | TRACE_AND_STEP(); | |
1442 | destval = sbb_byte(destval, *srcreg); | |
1443 | store_data_byte(destoffset, destval); | |
1444 | break; | |
1445 | case 1: | |
1446 | destoffset = decode_rm01_address(rl); | |
1447 | DECODE_PRINTF(","); | |
1448 | destval = fetch_data_byte(destoffset); | |
1449 | srcreg = DECODE_RM_BYTE_REGISTER(rh); | |
1450 | DECODE_PRINTF("\n"); | |
1451 | TRACE_AND_STEP(); | |
1452 | destval = sbb_byte(destval, *srcreg); | |
1453 | store_data_byte(destoffset, destval); | |
1454 | break; | |
1455 | case 2: | |
1456 | destoffset = decode_rm10_address(rl); | |
1457 | DECODE_PRINTF(","); | |
1458 | destval = fetch_data_byte(destoffset); | |
1459 | srcreg = DECODE_RM_BYTE_REGISTER(rh); | |
1460 | DECODE_PRINTF("\n"); | |
1461 | TRACE_AND_STEP(); | |
1462 | destval = sbb_byte(destval, *srcreg); | |
1463 | store_data_byte(destoffset, destval); | |
1464 | break; | |
1465 | case 3: /* register to register */ | |
1466 | destreg = DECODE_RM_BYTE_REGISTER(rl); | |
1467 | DECODE_PRINTF(","); | |
1468 | srcreg = DECODE_RM_BYTE_REGISTER(rh); | |
1469 | DECODE_PRINTF("\n"); | |
1470 | TRACE_AND_STEP(); | |
1471 | *destreg = sbb_byte(*destreg, *srcreg); | |
1472 | break; | |
1473 | } | |
1474 | DECODE_CLEAR_SEGOVR(); | |
1475 | END_OF_INSTR(); | |
1476 | } | |
1477 | ||
1478 | /**************************************************************************** | |
1479 | REMARKS: | |
1480 | Handles opcode 0x19 | |
1481 | ****************************************************************************/ | |
1482 | static void | |
1483 | x86emuOp_sbb_word_RM_R(u8 X86EMU_UNUSED(op1)) | |
1484 | { | |
1485 | int mod, rl, rh; | |
1486 | uint destoffset; | |
1487 | ||
1488 | START_OF_INSTR(); | |
1489 | DECODE_PRINTF("SBB\t"); | |
1490 | FETCH_DECODE_MODRM(mod, rh, rl); | |
1491 | switch (mod) { | |
1492 | case 0: | |
1493 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
1494 | u32 destval; | |
1495 | u32 *srcreg; | |
1496 | ||
1497 | destoffset = decode_rm00_address(rl); | |
1498 | DECODE_PRINTF(","); | |
1499 | destval = fetch_data_long(destoffset); | |
1500 | srcreg = DECODE_RM_LONG_REGISTER(rh); | |
1501 | DECODE_PRINTF("\n"); | |
1502 | TRACE_AND_STEP(); | |
1503 | destval = sbb_long(destval, *srcreg); | |
1504 | store_data_long(destoffset, destval); | |
1505 | } | |
1506 | else { | |
1507 | u16 destval; | |
1508 | u16 *srcreg; | |
1509 | ||
1510 | destoffset = decode_rm00_address(rl); | |
1511 | DECODE_PRINTF(","); | |
1512 | destval = fetch_data_word(destoffset); | |
1513 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
1514 | DECODE_PRINTF("\n"); | |
1515 | TRACE_AND_STEP(); | |
1516 | destval = sbb_word(destval, *srcreg); | |
1517 | store_data_word(destoffset, destval); | |
1518 | } | |
1519 | break; | |
1520 | case 1: | |
1521 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
1522 | u32 destval; | |
1523 | u32 *srcreg; | |
1524 | ||
1525 | destoffset = decode_rm01_address(rl); | |
1526 | DECODE_PRINTF(","); | |
1527 | destval = fetch_data_long(destoffset); | |
1528 | srcreg = DECODE_RM_LONG_REGISTER(rh); | |
1529 | DECODE_PRINTF("\n"); | |
1530 | TRACE_AND_STEP(); | |
1531 | destval = sbb_long(destval, *srcreg); | |
1532 | store_data_long(destoffset, destval); | |
1533 | } | |
1534 | else { | |
1535 | u16 destval; | |
1536 | u16 *srcreg; | |
1537 | ||
1538 | destoffset = decode_rm01_address(rl); | |
1539 | DECODE_PRINTF(","); | |
1540 | destval = fetch_data_word(destoffset); | |
1541 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
1542 | DECODE_PRINTF("\n"); | |
1543 | TRACE_AND_STEP(); | |
1544 | destval = sbb_word(destval, *srcreg); | |
1545 | store_data_word(destoffset, destval); | |
1546 | } | |
1547 | break; | |
1548 | case 2: | |
1549 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
1550 | u32 destval; | |
1551 | u32 *srcreg; | |
1552 | ||
1553 | destoffset = decode_rm10_address(rl); | |
1554 | DECODE_PRINTF(","); | |
1555 | destval = fetch_data_long(destoffset); | |
1556 | srcreg = DECODE_RM_LONG_REGISTER(rh); | |
1557 | DECODE_PRINTF("\n"); | |
1558 | TRACE_AND_STEP(); | |
1559 | destval = sbb_long(destval, *srcreg); | |
1560 | store_data_long(destoffset, destval); | |
1561 | } | |
1562 | else { | |
1563 | u16 destval; | |
1564 | u16 *srcreg; | |
1565 | ||
1566 | destoffset = decode_rm10_address(rl); | |
1567 | DECODE_PRINTF(","); | |
1568 | destval = fetch_data_word(destoffset); | |
1569 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
1570 | DECODE_PRINTF("\n"); | |
1571 | TRACE_AND_STEP(); | |
1572 | destval = sbb_word(destval, *srcreg); | |
1573 | store_data_word(destoffset, destval); | |
1574 | } | |
1575 | break; | |
1576 | case 3: /* register to register */ | |
1577 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
1578 | u32 *destreg, *srcreg; | |
1579 | ||
1580 | destreg = DECODE_RM_LONG_REGISTER(rl); | |
1581 | DECODE_PRINTF(","); | |
1582 | srcreg = DECODE_RM_LONG_REGISTER(rh); | |
1583 | DECODE_PRINTF("\n"); | |
1584 | TRACE_AND_STEP(); | |
1585 | *destreg = sbb_long(*destreg, *srcreg); | |
1586 | } | |
1587 | else { | |
1588 | u16 *destreg, *srcreg; | |
1589 | ||
1590 | destreg = DECODE_RM_WORD_REGISTER(rl); | |
1591 | DECODE_PRINTF(","); | |
1592 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
1593 | DECODE_PRINTF("\n"); | |
1594 | TRACE_AND_STEP(); | |
1595 | *destreg = sbb_word(*destreg, *srcreg); | |
1596 | } | |
1597 | break; | |
1598 | } | |
1599 | DECODE_CLEAR_SEGOVR(); | |
1600 | END_OF_INSTR(); | |
1601 | } | |
1602 | ||
1603 | /**************************************************************************** | |
1604 | REMARKS: | |
1605 | Handles opcode 0x1a | |
1606 | ****************************************************************************/ | |
1607 | static void | |
1608 | x86emuOp_sbb_byte_R_RM(u8 X86EMU_UNUSED(op1)) | |
1609 | { | |
1610 | int mod, rl, rh; | |
1611 | u8 *destreg, *srcreg; | |
1612 | uint srcoffset; | |
1613 | u8 srcval; | |
1614 | ||
1615 | START_OF_INSTR(); | |
1616 | DECODE_PRINTF("SBB\t"); | |
1617 | FETCH_DECODE_MODRM(mod, rh, rl); | |
1618 | switch (mod) { | |
1619 | case 0: | |
1620 | destreg = DECODE_RM_BYTE_REGISTER(rh); | |
1621 | DECODE_PRINTF(","); | |
1622 | srcoffset = decode_rm00_address(rl); | |
1623 | srcval = fetch_data_byte(srcoffset); | |
1624 | DECODE_PRINTF("\n"); | |
1625 | TRACE_AND_STEP(); | |
1626 | *destreg = sbb_byte(*destreg, srcval); | |
1627 | break; | |
1628 | case 1: | |
1629 | destreg = DECODE_RM_BYTE_REGISTER(rh); | |
1630 | DECODE_PRINTF(","); | |
1631 | srcoffset = decode_rm01_address(rl); | |
1632 | srcval = fetch_data_byte(srcoffset); | |
1633 | DECODE_PRINTF("\n"); | |
1634 | TRACE_AND_STEP(); | |
1635 | *destreg = sbb_byte(*destreg, srcval); | |
1636 | break; | |
1637 | case 2: | |
1638 | destreg = DECODE_RM_BYTE_REGISTER(rh); | |
1639 | DECODE_PRINTF(","); | |
1640 | srcoffset = decode_rm10_address(rl); | |
1641 | srcval = fetch_data_byte(srcoffset); | |
1642 | DECODE_PRINTF("\n"); | |
1643 | TRACE_AND_STEP(); | |
1644 | *destreg = sbb_byte(*destreg, srcval); | |
1645 | break; | |
1646 | case 3: /* register to register */ | |
1647 | destreg = DECODE_RM_BYTE_REGISTER(rh); | |
1648 | DECODE_PRINTF(","); | |
1649 | srcreg = DECODE_RM_BYTE_REGISTER(rl); | |
1650 | DECODE_PRINTF("\n"); | |
1651 | TRACE_AND_STEP(); | |
1652 | *destreg = sbb_byte(*destreg, *srcreg); | |
1653 | break; | |
1654 | } | |
1655 | DECODE_CLEAR_SEGOVR(); | |
1656 | END_OF_INSTR(); | |
1657 | } | |
1658 | ||
1659 | /**************************************************************************** | |
1660 | REMARKS: | |
1661 | Handles opcode 0x1b | |
1662 | ****************************************************************************/ | |
1663 | static void | |
1664 | x86emuOp_sbb_word_R_RM(u8 X86EMU_UNUSED(op1)) | |
1665 | { | |
1666 | int mod, rl, rh; | |
1667 | uint srcoffset; | |
1668 | ||
1669 | START_OF_INSTR(); | |
1670 | DECODE_PRINTF("SBB\t"); | |
1671 | FETCH_DECODE_MODRM(mod, rh, rl); | |
1672 | switch (mod) { | |
1673 | case 0: | |
1674 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
1675 | u32 *destreg; | |
1676 | u32 srcval; | |
1677 | ||
1678 | destreg = DECODE_RM_LONG_REGISTER(rh); | |
1679 | DECODE_PRINTF(","); | |
1680 | srcoffset = decode_rm00_address(rl); | |
1681 | srcval = fetch_data_long(srcoffset); | |
1682 | DECODE_PRINTF("\n"); | |
1683 | TRACE_AND_STEP(); | |
1684 | *destreg = sbb_long(*destreg, srcval); | |
1685 | } | |
1686 | else { | |
1687 | u16 *destreg; | |
1688 | u16 srcval; | |
1689 | ||
1690 | destreg = DECODE_RM_WORD_REGISTER(rh); | |
1691 | DECODE_PRINTF(","); | |
1692 | srcoffset = decode_rm00_address(rl); | |
1693 | srcval = fetch_data_word(srcoffset); | |
1694 | DECODE_PRINTF("\n"); | |
1695 | TRACE_AND_STEP(); | |
1696 | *destreg = sbb_word(*destreg, srcval); | |
1697 | } | |
1698 | break; | |
1699 | case 1: | |
1700 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
1701 | u32 *destreg; | |
1702 | u32 srcval; | |
1703 | ||
1704 | destreg = DECODE_RM_LONG_REGISTER(rh); | |
1705 | DECODE_PRINTF(","); | |
1706 | srcoffset = decode_rm01_address(rl); | |
1707 | srcval = fetch_data_long(srcoffset); | |
1708 | DECODE_PRINTF("\n"); | |
1709 | TRACE_AND_STEP(); | |
1710 | *destreg = sbb_long(*destreg, srcval); | |
1711 | } | |
1712 | else { | |
1713 | u16 *destreg; | |
1714 | u16 srcval; | |
1715 | ||
1716 | destreg = DECODE_RM_WORD_REGISTER(rh); | |
1717 | DECODE_PRINTF(","); | |
1718 | srcoffset = decode_rm01_address(rl); | |
1719 | srcval = fetch_data_word(srcoffset); | |
1720 | DECODE_PRINTF("\n"); | |
1721 | TRACE_AND_STEP(); | |
1722 | *destreg = sbb_word(*destreg, srcval); | |
1723 | } | |
1724 | break; | |
1725 | case 2: | |
1726 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
1727 | u32 *destreg; | |
1728 | u32 srcval; | |
1729 | ||
1730 | destreg = DECODE_RM_LONG_REGISTER(rh); | |
1731 | DECODE_PRINTF(","); | |
1732 | srcoffset = decode_rm10_address(rl); | |
1733 | srcval = fetch_data_long(srcoffset); | |
1734 | DECODE_PRINTF("\n"); | |
1735 | TRACE_AND_STEP(); | |
1736 | *destreg = sbb_long(*destreg, srcval); | |
1737 | } | |
1738 | else { | |
1739 | u16 *destreg; | |
1740 | u16 srcval; | |
1741 | ||
1742 | destreg = DECODE_RM_WORD_REGISTER(rh); | |
1743 | DECODE_PRINTF(","); | |
1744 | srcoffset = decode_rm10_address(rl); | |
1745 | srcval = fetch_data_word(srcoffset); | |
1746 | DECODE_PRINTF("\n"); | |
1747 | TRACE_AND_STEP(); | |
1748 | *destreg = sbb_word(*destreg, srcval); | |
1749 | } | |
1750 | break; | |
1751 | case 3: /* register to register */ | |
1752 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
1753 | u32 *destreg, *srcreg; | |
1754 | ||
1755 | destreg = DECODE_RM_LONG_REGISTER(rh); | |
1756 | DECODE_PRINTF(","); | |
1757 | srcreg = DECODE_RM_LONG_REGISTER(rl); | |
1758 | DECODE_PRINTF("\n"); | |
1759 | TRACE_AND_STEP(); | |
1760 | *destreg = sbb_long(*destreg, *srcreg); | |
1761 | } | |
1762 | else { | |
1763 | u16 *destreg, *srcreg; | |
1764 | ||
1765 | destreg = DECODE_RM_WORD_REGISTER(rh); | |
1766 | DECODE_PRINTF(","); | |
1767 | srcreg = DECODE_RM_WORD_REGISTER(rl); | |
1768 | DECODE_PRINTF("\n"); | |
1769 | TRACE_AND_STEP(); | |
1770 | *destreg = sbb_word(*destreg, *srcreg); | |
1771 | } | |
1772 | break; | |
1773 | } | |
1774 | DECODE_CLEAR_SEGOVR(); | |
1775 | END_OF_INSTR(); | |
1776 | } | |
1777 | ||
1778 | /**************************************************************************** | |
1779 | REMARKS: | |
1780 | Handles opcode 0x1c | |
1781 | ****************************************************************************/ | |
1782 | static void | |
1783 | x86emuOp_sbb_byte_AL_IMM(u8 X86EMU_UNUSED(op1)) | |
1784 | { | |
1785 | u8 srcval; | |
1786 | ||
1787 | START_OF_INSTR(); | |
1788 | DECODE_PRINTF("SBB\tAL,"); | |
1789 | srcval = fetch_byte_imm(); | |
1790 | DECODE_PRINTF2("%x\n", srcval); | |
1791 | TRACE_AND_STEP(); | |
1792 | M.x86.R_AL = sbb_byte(M.x86.R_AL, srcval); | |
1793 | DECODE_CLEAR_SEGOVR(); | |
1794 | END_OF_INSTR(); | |
1795 | } | |
1796 | ||
1797 | /**************************************************************************** | |
1798 | REMARKS: | |
1799 | Handles opcode 0x1d | |
1800 | ****************************************************************************/ | |
1801 | static void | |
1802 | x86emuOp_sbb_word_AX_IMM(u8 X86EMU_UNUSED(op1)) | |
1803 | { | |
1804 | u32 srcval; | |
1805 | ||
1806 | START_OF_INSTR(); | |
1807 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
1808 | DECODE_PRINTF("SBB\tEAX,"); | |
1809 | srcval = fetch_long_imm(); | |
1810 | } | |
1811 | else { | |
1812 | DECODE_PRINTF("SBB\tAX,"); | |
1813 | srcval = fetch_word_imm(); | |
1814 | } | |
1815 | DECODE_PRINTF2("%x\n", srcval); | |
1816 | TRACE_AND_STEP(); | |
1817 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
1818 | M.x86.R_EAX = sbb_long(M.x86.R_EAX, srcval); | |
1819 | } | |
1820 | else { | |
1821 | M.x86.R_AX = sbb_word(M.x86.R_AX, (u16) srcval); | |
1822 | } | |
1823 | DECODE_CLEAR_SEGOVR(); | |
1824 | END_OF_INSTR(); | |
1825 | } | |
1826 | ||
1827 | /**************************************************************************** | |
1828 | REMARKS: | |
1829 | Handles opcode 0x1e | |
1830 | ****************************************************************************/ | |
1831 | static void | |
1832 | x86emuOp_push_DS(u8 X86EMU_UNUSED(op1)) | |
1833 | { | |
1834 | START_OF_INSTR(); | |
1835 | DECODE_PRINTF("PUSH\tDS\n"); | |
1836 | TRACE_AND_STEP(); | |
1837 | push_word(M.x86.R_DS); | |
1838 | DECODE_CLEAR_SEGOVR(); | |
1839 | END_OF_INSTR(); | |
1840 | } | |
1841 | ||
1842 | /**************************************************************************** | |
1843 | REMARKS: | |
1844 | Handles opcode 0x1f | |
1845 | ****************************************************************************/ | |
1846 | static void | |
1847 | x86emuOp_pop_DS(u8 X86EMU_UNUSED(op1)) | |
1848 | { | |
1849 | START_OF_INSTR(); | |
1850 | DECODE_PRINTF("POP\tDS\n"); | |
1851 | TRACE_AND_STEP(); | |
1852 | M.x86.R_DS = pop_word(); | |
1853 | DECODE_CLEAR_SEGOVR(); | |
1854 | END_OF_INSTR(); | |
1855 | } | |
1856 | ||
1857 | /**************************************************************************** | |
1858 | REMARKS: | |
1859 | Handles opcode 0x20 | |
1860 | ****************************************************************************/ | |
1861 | static void | |
1862 | x86emuOp_and_byte_RM_R(u8 X86EMU_UNUSED(op1)) | |
1863 | { | |
1864 | int mod, rl, rh; | |
1865 | u8 *destreg, *srcreg; | |
1866 | uint destoffset; | |
1867 | u8 destval; | |
1868 | ||
1869 | START_OF_INSTR(); | |
1870 | DECODE_PRINTF("AND\t"); | |
1871 | FETCH_DECODE_MODRM(mod, rh, rl); | |
1872 | ||
1873 | switch (mod) { | |
1874 | case 0: | |
1875 | destoffset = decode_rm00_address(rl); | |
1876 | DECODE_PRINTF(","); | |
1877 | destval = fetch_data_byte(destoffset); | |
1878 | srcreg = DECODE_RM_BYTE_REGISTER(rh); | |
1879 | DECODE_PRINTF("\n"); | |
1880 | TRACE_AND_STEP(); | |
1881 | destval = and_byte(destval, *srcreg); | |
1882 | store_data_byte(destoffset, destval); | |
1883 | break; | |
1884 | ||
1885 | case 1: | |
1886 | destoffset = decode_rm01_address(rl); | |
1887 | DECODE_PRINTF(","); | |
1888 | destval = fetch_data_byte(destoffset); | |
1889 | srcreg = DECODE_RM_BYTE_REGISTER(rh); | |
1890 | DECODE_PRINTF("\n"); | |
1891 | TRACE_AND_STEP(); | |
1892 | destval = and_byte(destval, *srcreg); | |
1893 | store_data_byte(destoffset, destval); | |
1894 | break; | |
1895 | ||
1896 | case 2: | |
1897 | destoffset = decode_rm10_address(rl); | |
1898 | DECODE_PRINTF(","); | |
1899 | destval = fetch_data_byte(destoffset); | |
1900 | srcreg = DECODE_RM_BYTE_REGISTER(rh); | |
1901 | DECODE_PRINTF("\n"); | |
1902 | TRACE_AND_STEP(); | |
1903 | destval = and_byte(destval, *srcreg); | |
1904 | store_data_byte(destoffset, destval); | |
1905 | break; | |
1906 | ||
1907 | case 3: /* register to register */ | |
1908 | destreg = DECODE_RM_BYTE_REGISTER(rl); | |
1909 | DECODE_PRINTF(","); | |
1910 | srcreg = DECODE_RM_BYTE_REGISTER(rh); | |
1911 | DECODE_PRINTF("\n"); | |
1912 | TRACE_AND_STEP(); | |
1913 | *destreg = and_byte(*destreg, *srcreg); | |
1914 | break; | |
1915 | } | |
1916 | DECODE_CLEAR_SEGOVR(); | |
1917 | END_OF_INSTR(); | |
1918 | } | |
1919 | ||
1920 | /**************************************************************************** | |
1921 | REMARKS: | |
1922 | Handles opcode 0x21 | |
1923 | ****************************************************************************/ | |
1924 | static void | |
1925 | x86emuOp_and_word_RM_R(u8 X86EMU_UNUSED(op1)) | |
1926 | { | |
1927 | int mod, rl, rh; | |
1928 | uint destoffset; | |
1929 | ||
1930 | START_OF_INSTR(); | |
1931 | DECODE_PRINTF("AND\t"); | |
1932 | FETCH_DECODE_MODRM(mod, rh, rl); | |
1933 | switch (mod) { | |
1934 | case 0: | |
1935 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
1936 | u32 destval; | |
1937 | u32 *srcreg; | |
1938 | ||
1939 | destoffset = decode_rm00_address(rl); | |
1940 | DECODE_PRINTF(","); | |
1941 | destval = fetch_data_long(destoffset); | |
1942 | srcreg = DECODE_RM_LONG_REGISTER(rh); | |
1943 | DECODE_PRINTF("\n"); | |
1944 | TRACE_AND_STEP(); | |
1945 | destval = and_long(destval, *srcreg); | |
1946 | store_data_long(destoffset, destval); | |
1947 | } | |
1948 | else { | |
1949 | u16 destval; | |
1950 | u16 *srcreg; | |
1951 | ||
1952 | destoffset = decode_rm00_address(rl); | |
1953 | DECODE_PRINTF(","); | |
1954 | destval = fetch_data_word(destoffset); | |
1955 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
1956 | DECODE_PRINTF("\n"); | |
1957 | TRACE_AND_STEP(); | |
1958 | destval = and_word(destval, *srcreg); | |
1959 | store_data_word(destoffset, destval); | |
1960 | } | |
1961 | break; | |
1962 | case 1: | |
1963 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
1964 | u32 destval; | |
1965 | u32 *srcreg; | |
1966 | ||
1967 | destoffset = decode_rm01_address(rl); | |
1968 | DECODE_PRINTF(","); | |
1969 | destval = fetch_data_long(destoffset); | |
1970 | srcreg = DECODE_RM_LONG_REGISTER(rh); | |
1971 | DECODE_PRINTF("\n"); | |
1972 | TRACE_AND_STEP(); | |
1973 | destval = and_long(destval, *srcreg); | |
1974 | store_data_long(destoffset, destval); | |
1975 | } | |
1976 | else { | |
1977 | u16 destval; | |
1978 | u16 *srcreg; | |
1979 | ||
1980 | destoffset = decode_rm01_address(rl); | |
1981 | DECODE_PRINTF(","); | |
1982 | destval = fetch_data_word(destoffset); | |
1983 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
1984 | DECODE_PRINTF("\n"); | |
1985 | TRACE_AND_STEP(); | |
1986 | destval = and_word(destval, *srcreg); | |
1987 | store_data_word(destoffset, destval); | |
1988 | } | |
1989 | break; | |
1990 | case 2: | |
1991 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
1992 | u32 destval; | |
1993 | u32 *srcreg; | |
1994 | ||
1995 | destoffset = decode_rm10_address(rl); | |
1996 | DECODE_PRINTF(","); | |
1997 | destval = fetch_data_long(destoffset); | |
1998 | srcreg = DECODE_RM_LONG_REGISTER(rh); | |
1999 | DECODE_PRINTF("\n"); | |
2000 | TRACE_AND_STEP(); | |
2001 | destval = and_long(destval, *srcreg); | |
2002 | store_data_long(destoffset, destval); | |
2003 | } | |
2004 | else { | |
2005 | u16 destval; | |
2006 | u16 *srcreg; | |
2007 | ||
2008 | destoffset = decode_rm10_address(rl); | |
2009 | DECODE_PRINTF(","); | |
2010 | destval = fetch_data_word(destoffset); | |
2011 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
2012 | DECODE_PRINTF("\n"); | |
2013 | TRACE_AND_STEP(); | |
2014 | destval = and_word(destval, *srcreg); | |
2015 | store_data_word(destoffset, destval); | |
2016 | } | |
2017 | break; | |
2018 | case 3: /* register to register */ | |
2019 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
2020 | u32 *destreg, *srcreg; | |
2021 | ||
2022 | destreg = DECODE_RM_LONG_REGISTER(rl); | |
2023 | DECODE_PRINTF(","); | |
2024 | srcreg = DECODE_RM_LONG_REGISTER(rh); | |
2025 | DECODE_PRINTF("\n"); | |
2026 | TRACE_AND_STEP(); | |
2027 | *destreg = and_long(*destreg, *srcreg); | |
2028 | } | |
2029 | else { | |
2030 | u16 *destreg, *srcreg; | |
2031 | ||
2032 | destreg = DECODE_RM_WORD_REGISTER(rl); | |
2033 | DECODE_PRINTF(","); | |
2034 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
2035 | DECODE_PRINTF("\n"); | |
2036 | TRACE_AND_STEP(); | |
2037 | *destreg = and_word(*destreg, *srcreg); | |
2038 | } | |
2039 | break; | |
2040 | } | |
2041 | DECODE_CLEAR_SEGOVR(); | |
2042 | END_OF_INSTR(); | |
2043 | } | |
2044 | ||
2045 | /**************************************************************************** | |
2046 | REMARKS: | |
2047 | Handles opcode 0x22 | |
2048 | ****************************************************************************/ | |
2049 | static void | |
2050 | x86emuOp_and_byte_R_RM(u8 X86EMU_UNUSED(op1)) | |
2051 | { | |
2052 | int mod, rl, rh; | |
2053 | u8 *destreg, *srcreg; | |
2054 | uint srcoffset; | |
2055 | u8 srcval; | |
2056 | ||
2057 | START_OF_INSTR(); | |
2058 | DECODE_PRINTF("AND\t"); | |
2059 | FETCH_DECODE_MODRM(mod, rh, rl); | |
2060 | switch (mod) { | |
2061 | case 0: | |
2062 | destreg = DECODE_RM_BYTE_REGISTER(rh); | |
2063 | DECODE_PRINTF(","); | |
2064 | srcoffset = decode_rm00_address(rl); | |
2065 | srcval = fetch_data_byte(srcoffset); | |
2066 | DECODE_PRINTF("\n"); | |
2067 | TRACE_AND_STEP(); | |
2068 | *destreg = and_byte(*destreg, srcval); | |
2069 | break; | |
2070 | case 1: | |
2071 | destreg = DECODE_RM_BYTE_REGISTER(rh); | |
2072 | DECODE_PRINTF(","); | |
2073 | srcoffset = decode_rm01_address(rl); | |
2074 | srcval = fetch_data_byte(srcoffset); | |
2075 | DECODE_PRINTF("\n"); | |
2076 | TRACE_AND_STEP(); | |
2077 | *destreg = and_byte(*destreg, srcval); | |
2078 | break; | |
2079 | case 2: | |
2080 | destreg = DECODE_RM_BYTE_REGISTER(rh); | |
2081 | DECODE_PRINTF(","); | |
2082 | srcoffset = decode_rm10_address(rl); | |
2083 | srcval = fetch_data_byte(srcoffset); | |
2084 | DECODE_PRINTF("\n"); | |
2085 | TRACE_AND_STEP(); | |
2086 | *destreg = and_byte(*destreg, srcval); | |
2087 | break; | |
2088 | case 3: /* register to register */ | |
2089 | destreg = DECODE_RM_BYTE_REGISTER(rh); | |
2090 | DECODE_PRINTF(","); | |
2091 | srcreg = DECODE_RM_BYTE_REGISTER(rl); | |
2092 | DECODE_PRINTF("\n"); | |
2093 | TRACE_AND_STEP(); | |
2094 | *destreg = and_byte(*destreg, *srcreg); | |
2095 | break; | |
2096 | } | |
2097 | DECODE_CLEAR_SEGOVR(); | |
2098 | END_OF_INSTR(); | |
2099 | } | |
2100 | ||
2101 | /**************************************************************************** | |
2102 | REMARKS: | |
2103 | Handles opcode 0x23 | |
2104 | ****************************************************************************/ | |
2105 | static void | |
2106 | x86emuOp_and_word_R_RM(u8 X86EMU_UNUSED(op1)) | |
2107 | { | |
2108 | int mod, rl, rh; | |
2109 | uint srcoffset; | |
2110 | ||
2111 | START_OF_INSTR(); | |
2112 | DECODE_PRINTF("AND\t"); | |
2113 | FETCH_DECODE_MODRM(mod, rh, rl); | |
2114 | switch (mod) { | |
2115 | case 0: | |
2116 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
2117 | u32 *destreg; | |
2118 | u32 srcval; | |
2119 | ||
2120 | destreg = DECODE_RM_LONG_REGISTER(rh); | |
2121 | DECODE_PRINTF(","); | |
2122 | srcoffset = decode_rm00_address(rl); | |
2123 | srcval = fetch_data_long(srcoffset); | |
2124 | DECODE_PRINTF("\n"); | |
2125 | TRACE_AND_STEP(); | |
2126 | *destreg = and_long(*destreg, srcval); | |
2127 | } | |
2128 | else { | |
2129 | u16 *destreg; | |
2130 | u16 srcval; | |
2131 | ||
2132 | destreg = DECODE_RM_WORD_REGISTER(rh); | |
2133 | DECODE_PRINTF(","); | |
2134 | srcoffset = decode_rm00_address(rl); | |
2135 | srcval = fetch_data_word(srcoffset); | |
2136 | DECODE_PRINTF("\n"); | |
2137 | TRACE_AND_STEP(); | |
2138 | *destreg = and_word(*destreg, srcval); | |
2139 | } | |
2140 | break; | |
2141 | case 1: | |
2142 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
2143 | u32 *destreg; | |
2144 | u32 srcval; | |
2145 | ||
2146 | destreg = DECODE_RM_LONG_REGISTER(rh); | |
2147 | DECODE_PRINTF(","); | |
2148 | srcoffset = decode_rm01_address(rl); | |
2149 | srcval = fetch_data_long(srcoffset); | |
2150 | DECODE_PRINTF("\n"); | |
2151 | TRACE_AND_STEP(); | |
2152 | *destreg = and_long(*destreg, srcval); | |
2153 | break; | |
2154 | } | |
2155 | else { | |
2156 | u16 *destreg; | |
2157 | u16 srcval; | |
2158 | ||
2159 | destreg = DECODE_RM_WORD_REGISTER(rh); | |
2160 | DECODE_PRINTF(","); | |
2161 | srcoffset = decode_rm01_address(rl); | |
2162 | srcval = fetch_data_word(srcoffset); | |
2163 | DECODE_PRINTF("\n"); | |
2164 | TRACE_AND_STEP(); | |
2165 | *destreg = and_word(*destreg, srcval); | |
2166 | break; | |
2167 | } | |
2168 | case 2: | |
2169 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
2170 | u32 *destreg; | |
2171 | u32 srcval; | |
2172 | ||
2173 | destreg = DECODE_RM_LONG_REGISTER(rh); | |
2174 | DECODE_PRINTF(","); | |
2175 | srcoffset = decode_rm10_address(rl); | |
2176 | srcval = fetch_data_long(srcoffset); | |
2177 | DECODE_PRINTF("\n"); | |
2178 | TRACE_AND_STEP(); | |
2179 | *destreg = and_long(*destreg, srcval); | |
2180 | } | |
2181 | else { | |
2182 | u16 *destreg; | |
2183 | u16 srcval; | |
2184 | ||
2185 | destreg = DECODE_RM_WORD_REGISTER(rh); | |
2186 | DECODE_PRINTF(","); | |
2187 | srcoffset = decode_rm10_address(rl); | |
2188 | srcval = fetch_data_word(srcoffset); | |
2189 | DECODE_PRINTF("\n"); | |
2190 | TRACE_AND_STEP(); | |
2191 | *destreg = and_word(*destreg, srcval); | |
2192 | } | |
2193 | break; | |
2194 | case 3: /* register to register */ | |
2195 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
2196 | u32 *destreg, *srcreg; | |
2197 | ||
2198 | destreg = DECODE_RM_LONG_REGISTER(rh); | |
2199 | DECODE_PRINTF(","); | |
2200 | srcreg = DECODE_RM_LONG_REGISTER(rl); | |
2201 | DECODE_PRINTF("\n"); | |
2202 | TRACE_AND_STEP(); | |
2203 | *destreg = and_long(*destreg, *srcreg); | |
2204 | } | |
2205 | else { | |
2206 | u16 *destreg, *srcreg; | |
2207 | ||
2208 | destreg = DECODE_RM_WORD_REGISTER(rh); | |
2209 | DECODE_PRINTF(","); | |
2210 | srcreg = DECODE_RM_WORD_REGISTER(rl); | |
2211 | DECODE_PRINTF("\n"); | |
2212 | TRACE_AND_STEP(); | |
2213 | *destreg = and_word(*destreg, *srcreg); | |
2214 | } | |
2215 | break; | |
2216 | } | |
2217 | DECODE_CLEAR_SEGOVR(); | |
2218 | END_OF_INSTR(); | |
2219 | } | |
2220 | ||
2221 | /**************************************************************************** | |
2222 | REMARKS: | |
2223 | Handles opcode 0x24 | |
2224 | ****************************************************************************/ | |
2225 | static void | |
2226 | x86emuOp_and_byte_AL_IMM(u8 X86EMU_UNUSED(op1)) | |
2227 | { | |
2228 | u8 srcval; | |
2229 | ||
2230 | START_OF_INSTR(); | |
2231 | DECODE_PRINTF("AND\tAL,"); | |
2232 | srcval = fetch_byte_imm(); | |
2233 | DECODE_PRINTF2("%x\n", srcval); | |
2234 | TRACE_AND_STEP(); | |
2235 | M.x86.R_AL = and_byte(M.x86.R_AL, srcval); | |
2236 | DECODE_CLEAR_SEGOVR(); | |
2237 | END_OF_INSTR(); | |
2238 | } | |
2239 | ||
2240 | /**************************************************************************** | |
2241 | REMARKS: | |
2242 | Handles opcode 0x25 | |
2243 | ****************************************************************************/ | |
2244 | static void | |
2245 | x86emuOp_and_word_AX_IMM(u8 X86EMU_UNUSED(op1)) | |
2246 | { | |
2247 | u32 srcval; | |
2248 | ||
2249 | START_OF_INSTR(); | |
2250 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
2251 | DECODE_PRINTF("AND\tEAX,"); | |
2252 | srcval = fetch_long_imm(); | |
2253 | } | |
2254 | else { | |
2255 | DECODE_PRINTF("AND\tAX,"); | |
2256 | srcval = fetch_word_imm(); | |
2257 | } | |
2258 | DECODE_PRINTF2("%x\n", srcval); | |
2259 | TRACE_AND_STEP(); | |
2260 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
2261 | M.x86.R_EAX = and_long(M.x86.R_EAX, srcval); | |
2262 | } | |
2263 | else { | |
2264 | M.x86.R_AX = and_word(M.x86.R_AX, (u16) srcval); | |
2265 | } | |
2266 | DECODE_CLEAR_SEGOVR(); | |
2267 | END_OF_INSTR(); | |
2268 | } | |
2269 | ||
2270 | /**************************************************************************** | |
2271 | REMARKS: | |
2272 | Handles opcode 0x26 | |
2273 | ****************************************************************************/ | |
2274 | static void | |
2275 | x86emuOp_segovr_ES(u8 X86EMU_UNUSED(op1)) | |
2276 | { | |
2277 | START_OF_INSTR(); | |
2278 | DECODE_PRINTF("ES:\n"); | |
2279 | TRACE_AND_STEP(); | |
2280 | M.x86.mode |= SYSMODE_SEGOVR_ES; | |
2281 | /* | |
2282 | * note the lack of DECODE_CLEAR_SEGOVR(r) since, here is one of 4 | |
2283 | * opcode subroutines we do not want to do this. | |
2284 | */ | |
2285 | END_OF_INSTR(); | |
2286 | } | |
2287 | ||
2288 | /**************************************************************************** | |
2289 | REMARKS: | |
2290 | Handles opcode 0x27 | |
2291 | ****************************************************************************/ | |
2292 | static void | |
2293 | x86emuOp_daa(u8 X86EMU_UNUSED(op1)) | |
2294 | { | |
2295 | START_OF_INSTR(); | |
2296 | DECODE_PRINTF("DAA\n"); | |
2297 | TRACE_AND_STEP(); | |
2298 | M.x86.R_AL = daa_byte(M.x86.R_AL); | |
2299 | DECODE_CLEAR_SEGOVR(); | |
2300 | END_OF_INSTR(); | |
2301 | } | |
2302 | ||
2303 | /**************************************************************************** | |
2304 | REMARKS: | |
2305 | Handles opcode 0x28 | |
2306 | ****************************************************************************/ | |
2307 | static void | |
2308 | x86emuOp_sub_byte_RM_R(u8 X86EMU_UNUSED(op1)) | |
2309 | { | |
2310 | int mod, rl, rh; | |
2311 | u8 *destreg, *srcreg; | |
2312 | uint destoffset; | |
2313 | u8 destval; | |
2314 | ||
2315 | START_OF_INSTR(); | |
2316 | DECODE_PRINTF("SUB\t"); | |
2317 | FETCH_DECODE_MODRM(mod, rh, rl); | |
2318 | switch (mod) { | |
2319 | case 0: | |
2320 | destoffset = decode_rm00_address(rl); | |
2321 | DECODE_PRINTF(","); | |
2322 | destval = fetch_data_byte(destoffset); | |
2323 | srcreg = DECODE_RM_BYTE_REGISTER(rh); | |
2324 | DECODE_PRINTF("\n"); | |
2325 | TRACE_AND_STEP(); | |
2326 | destval = sub_byte(destval, *srcreg); | |
2327 | store_data_byte(destoffset, destval); | |
2328 | break; | |
2329 | case 1: | |
2330 | destoffset = decode_rm01_address(rl); | |
2331 | DECODE_PRINTF(","); | |
2332 | destval = fetch_data_byte(destoffset); | |
2333 | srcreg = DECODE_RM_BYTE_REGISTER(rh); | |
2334 | DECODE_PRINTF("\n"); | |
2335 | TRACE_AND_STEP(); | |
2336 | destval = sub_byte(destval, *srcreg); | |
2337 | store_data_byte(destoffset, destval); | |
2338 | break; | |
2339 | case 2: | |
2340 | destoffset = decode_rm10_address(rl); | |
2341 | DECODE_PRINTF(","); | |
2342 | destval = fetch_data_byte(destoffset); | |
2343 | srcreg = DECODE_RM_BYTE_REGISTER(rh); | |
2344 | DECODE_PRINTF("\n"); | |
2345 | TRACE_AND_STEP(); | |
2346 | destval = sub_byte(destval, *srcreg); | |
2347 | store_data_byte(destoffset, destval); | |
2348 | break; | |
2349 | case 3: /* register to register */ | |
2350 | destreg = DECODE_RM_BYTE_REGISTER(rl); | |
2351 | DECODE_PRINTF(","); | |
2352 | srcreg = DECODE_RM_BYTE_REGISTER(rh); | |
2353 | DECODE_PRINTF("\n"); | |
2354 | TRACE_AND_STEP(); | |
2355 | *destreg = sub_byte(*destreg, *srcreg); | |
2356 | break; | |
2357 | } | |
2358 | DECODE_CLEAR_SEGOVR(); | |
2359 | END_OF_INSTR(); | |
2360 | } | |
2361 | ||
2362 | /**************************************************************************** | |
2363 | REMARKS: | |
2364 | Handles opcode 0x29 | |
2365 | ****************************************************************************/ | |
2366 | static void | |
2367 | x86emuOp_sub_word_RM_R(u8 X86EMU_UNUSED(op1)) | |
2368 | { | |
2369 | int mod, rl, rh; | |
2370 | uint destoffset; | |
2371 | ||
2372 | START_OF_INSTR(); | |
2373 | DECODE_PRINTF("SUB\t"); | |
2374 | FETCH_DECODE_MODRM(mod, rh, rl); | |
2375 | switch (mod) { | |
2376 | case 0: | |
2377 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
2378 | u32 destval; | |
2379 | u32 *srcreg; | |
2380 | ||
2381 | destoffset = decode_rm00_address(rl); | |
2382 | DECODE_PRINTF(","); | |
2383 | destval = fetch_data_long(destoffset); | |
2384 | srcreg = DECODE_RM_LONG_REGISTER(rh); | |
2385 | DECODE_PRINTF("\n"); | |
2386 | TRACE_AND_STEP(); | |
2387 | destval = sub_long(destval, *srcreg); | |
2388 | store_data_long(destoffset, destval); | |
2389 | } | |
2390 | else { | |
2391 | u16 destval; | |
2392 | u16 *srcreg; | |
2393 | ||
2394 | destoffset = decode_rm00_address(rl); | |
2395 | DECODE_PRINTF(","); | |
2396 | destval = fetch_data_word(destoffset); | |
2397 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
2398 | DECODE_PRINTF("\n"); | |
2399 | TRACE_AND_STEP(); | |
2400 | destval = sub_word(destval, *srcreg); | |
2401 | store_data_word(destoffset, destval); | |
2402 | } | |
2403 | break; | |
2404 | case 1: | |
2405 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
2406 | u32 destval; | |
2407 | u32 *srcreg; | |
2408 | ||
2409 | destoffset = decode_rm01_address(rl); | |
2410 | DECODE_PRINTF(","); | |
2411 | destval = fetch_data_long(destoffset); | |
2412 | srcreg = DECODE_RM_LONG_REGISTER(rh); | |
2413 | DECODE_PRINTF("\n"); | |
2414 | TRACE_AND_STEP(); | |
2415 | destval = sub_long(destval, *srcreg); | |
2416 | store_data_long(destoffset, destval); | |
2417 | } | |
2418 | else { | |
2419 | u16 destval; | |
2420 | u16 *srcreg; | |
2421 | ||
2422 | destoffset = decode_rm01_address(rl); | |
2423 | DECODE_PRINTF(","); | |
2424 | destval = fetch_data_word(destoffset); | |
2425 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
2426 | DECODE_PRINTF("\n"); | |
2427 | TRACE_AND_STEP(); | |
2428 | destval = sub_word(destval, *srcreg); | |
2429 | store_data_word(destoffset, destval); | |
2430 | } | |
2431 | break; | |
2432 | case 2: | |
2433 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
2434 | u32 destval; | |
2435 | u32 *srcreg; | |
2436 | ||
2437 | destoffset = decode_rm10_address(rl); | |
2438 | DECODE_PRINTF(","); | |
2439 | destval = fetch_data_long(destoffset); | |
2440 | srcreg = DECODE_RM_LONG_REGISTER(rh); | |
2441 | DECODE_PRINTF("\n"); | |
2442 | TRACE_AND_STEP(); | |
2443 | destval = sub_long(destval, *srcreg); | |
2444 | store_data_long(destoffset, destval); | |
2445 | } | |
2446 | else { | |
2447 | u16 destval; | |
2448 | u16 *srcreg; | |
2449 | ||
2450 | destoffset = decode_rm10_address(rl); | |
2451 | DECODE_PRINTF(","); | |
2452 | destval = fetch_data_word(destoffset); | |
2453 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
2454 | DECODE_PRINTF("\n"); | |
2455 | TRACE_AND_STEP(); | |
2456 | destval = sub_word(destval, *srcreg); | |
2457 | store_data_word(destoffset, destval); | |
2458 | } | |
2459 | break; | |
2460 | case 3: /* register to register */ | |
2461 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
2462 | u32 *destreg, *srcreg; | |
2463 | ||
2464 | destreg = DECODE_RM_LONG_REGISTER(rl); | |
2465 | DECODE_PRINTF(","); | |
2466 | srcreg = DECODE_RM_LONG_REGISTER(rh); | |
2467 | DECODE_PRINTF("\n"); | |
2468 | TRACE_AND_STEP(); | |
2469 | *destreg = sub_long(*destreg, *srcreg); | |
2470 | } | |
2471 | else { | |
2472 | u16 *destreg, *srcreg; | |
2473 | ||
2474 | destreg = DECODE_RM_WORD_REGISTER(rl); | |
2475 | DECODE_PRINTF(","); | |
2476 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
2477 | DECODE_PRINTF("\n"); | |
2478 | TRACE_AND_STEP(); | |
2479 | *destreg = sub_word(*destreg, *srcreg); | |
2480 | } | |
2481 | break; | |
2482 | } | |
2483 | DECODE_CLEAR_SEGOVR(); | |
2484 | END_OF_INSTR(); | |
2485 | } | |
2486 | ||
2487 | /**************************************************************************** | |
2488 | REMARKS: | |
2489 | Handles opcode 0x2a | |
2490 | ****************************************************************************/ | |
2491 | static void | |
2492 | x86emuOp_sub_byte_R_RM(u8 X86EMU_UNUSED(op1)) | |
2493 | { | |
2494 | int mod, rl, rh; | |
2495 | u8 *destreg, *srcreg; | |
2496 | uint srcoffset; | |
2497 | u8 srcval; | |
2498 | ||
2499 | START_OF_INSTR(); | |
2500 | DECODE_PRINTF("SUB\t"); | |
2501 | FETCH_DECODE_MODRM(mod, rh, rl); | |
2502 | switch (mod) { | |
2503 | case 0: | |
2504 | destreg = DECODE_RM_BYTE_REGISTER(rh); | |
2505 | DECODE_PRINTF(","); | |
2506 | srcoffset = decode_rm00_address(rl); | |
2507 | srcval = fetch_data_byte(srcoffset); | |
2508 | DECODE_PRINTF("\n"); | |
2509 | TRACE_AND_STEP(); | |
2510 | *destreg = sub_byte(*destreg, srcval); | |
2511 | break; | |
2512 | case 1: | |
2513 | destreg = DECODE_RM_BYTE_REGISTER(rh); | |
2514 | DECODE_PRINTF(","); | |
2515 | srcoffset = decode_rm01_address(rl); | |
2516 | srcval = fetch_data_byte(srcoffset); | |
2517 | DECODE_PRINTF("\n"); | |
2518 | TRACE_AND_STEP(); | |
2519 | *destreg = sub_byte(*destreg, srcval); | |
2520 | break; | |
2521 | case 2: | |
2522 | destreg = DECODE_RM_BYTE_REGISTER(rh); | |
2523 | DECODE_PRINTF(","); | |
2524 | srcoffset = decode_rm10_address(rl); | |
2525 | srcval = fetch_data_byte(srcoffset); | |
2526 | DECODE_PRINTF("\n"); | |
2527 | TRACE_AND_STEP(); | |
2528 | *destreg = sub_byte(*destreg, srcval); | |
2529 | break; | |
2530 | case 3: /* register to register */ | |
2531 | destreg = DECODE_RM_BYTE_REGISTER(rh); | |
2532 | DECODE_PRINTF(","); | |
2533 | srcreg = DECODE_RM_BYTE_REGISTER(rl); | |
2534 | DECODE_PRINTF("\n"); | |
2535 | TRACE_AND_STEP(); | |
2536 | *destreg = sub_byte(*destreg, *srcreg); | |
2537 | break; | |
2538 | } | |
2539 | DECODE_CLEAR_SEGOVR(); | |
2540 | END_OF_INSTR(); | |
2541 | } | |
2542 | ||
2543 | /**************************************************************************** | |
2544 | REMARKS: | |
2545 | Handles opcode 0x2b | |
2546 | ****************************************************************************/ | |
2547 | static void | |
2548 | x86emuOp_sub_word_R_RM(u8 X86EMU_UNUSED(op1)) | |
2549 | { | |
2550 | int mod, rl, rh; | |
2551 | uint srcoffset; | |
2552 | ||
2553 | START_OF_INSTR(); | |
2554 | DECODE_PRINTF("SUB\t"); | |
2555 | FETCH_DECODE_MODRM(mod, rh, rl); | |
2556 | switch (mod) { | |
2557 | case 0: | |
2558 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
2559 | u32 *destreg; | |
2560 | u32 srcval; | |
2561 | ||
2562 | destreg = DECODE_RM_LONG_REGISTER(rh); | |
2563 | DECODE_PRINTF(","); | |
2564 | srcoffset = decode_rm00_address(rl); | |
2565 | srcval = fetch_data_long(srcoffset); | |
2566 | DECODE_PRINTF("\n"); | |
2567 | TRACE_AND_STEP(); | |
2568 | *destreg = sub_long(*destreg, srcval); | |
2569 | } | |
2570 | else { | |
2571 | u16 *destreg; | |
2572 | u16 srcval; | |
2573 | ||
2574 | destreg = DECODE_RM_WORD_REGISTER(rh); | |
2575 | DECODE_PRINTF(","); | |
2576 | srcoffset = decode_rm00_address(rl); | |
2577 | srcval = fetch_data_word(srcoffset); | |
2578 | DECODE_PRINTF("\n"); | |
2579 | TRACE_AND_STEP(); | |
2580 | *destreg = sub_word(*destreg, srcval); | |
2581 | } | |
2582 | break; | |
2583 | case 1: | |
2584 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
2585 | u32 *destreg; | |
2586 | u32 srcval; | |
2587 | ||
2588 | destreg = DECODE_RM_LONG_REGISTER(rh); | |
2589 | DECODE_PRINTF(","); | |
2590 | srcoffset = decode_rm01_address(rl); | |
2591 | srcval = fetch_data_long(srcoffset); | |
2592 | DECODE_PRINTF("\n"); | |
2593 | TRACE_AND_STEP(); | |
2594 | *destreg = sub_long(*destreg, srcval); | |
2595 | } | |
2596 | else { | |
2597 | u16 *destreg; | |
2598 | u16 srcval; | |
2599 | ||
2600 | destreg = DECODE_RM_WORD_REGISTER(rh); | |
2601 | DECODE_PRINTF(","); | |
2602 | srcoffset = decode_rm01_address(rl); | |
2603 | srcval = fetch_data_word(srcoffset); | |
2604 | DECODE_PRINTF("\n"); | |
2605 | TRACE_AND_STEP(); | |
2606 | *destreg = sub_word(*destreg, srcval); | |
2607 | } | |
2608 | break; | |
2609 | case 2: | |
2610 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
2611 | u32 *destreg; | |
2612 | u32 srcval; | |
2613 | ||
2614 | destreg = DECODE_RM_LONG_REGISTER(rh); | |
2615 | DECODE_PRINTF(","); | |
2616 | srcoffset = decode_rm10_address(rl); | |
2617 | srcval = fetch_data_long(srcoffset); | |
2618 | DECODE_PRINTF("\n"); | |
2619 | TRACE_AND_STEP(); | |
2620 | *destreg = sub_long(*destreg, srcval); | |
2621 | } | |
2622 | else { | |
2623 | u16 *destreg; | |
2624 | u16 srcval; | |
2625 | ||
2626 | destreg = DECODE_RM_WORD_REGISTER(rh); | |
2627 | DECODE_PRINTF(","); | |
2628 | srcoffset = decode_rm10_address(rl); | |
2629 | srcval = fetch_data_word(srcoffset); | |
2630 | DECODE_PRINTF("\n"); | |
2631 | TRACE_AND_STEP(); | |
2632 | *destreg = sub_word(*destreg, srcval); | |
2633 | } | |
2634 | break; | |
2635 | case 3: /* register to register */ | |
2636 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
2637 | u32 *destreg, *srcreg; | |
2638 | ||
2639 | destreg = DECODE_RM_LONG_REGISTER(rh); | |
2640 | DECODE_PRINTF(","); | |
2641 | srcreg = DECODE_RM_LONG_REGISTER(rl); | |
2642 | DECODE_PRINTF("\n"); | |
2643 | TRACE_AND_STEP(); | |
2644 | *destreg = sub_long(*destreg, *srcreg); | |
2645 | } | |
2646 | else { | |
2647 | u16 *destreg, *srcreg; | |
2648 | ||
2649 | destreg = DECODE_RM_WORD_REGISTER(rh); | |
2650 | DECODE_PRINTF(","); | |
2651 | srcreg = DECODE_RM_WORD_REGISTER(rl); | |
2652 | DECODE_PRINTF("\n"); | |
2653 | TRACE_AND_STEP(); | |
2654 | *destreg = sub_word(*destreg, *srcreg); | |
2655 | } | |
2656 | break; | |
2657 | } | |
2658 | DECODE_CLEAR_SEGOVR(); | |
2659 | END_OF_INSTR(); | |
2660 | } | |
2661 | ||
2662 | /**************************************************************************** | |
2663 | REMARKS: | |
2664 | Handles opcode 0x2c | |
2665 | ****************************************************************************/ | |
2666 | static void | |
2667 | x86emuOp_sub_byte_AL_IMM(u8 X86EMU_UNUSED(op1)) | |
2668 | { | |
2669 | u8 srcval; | |
2670 | ||
2671 | START_OF_INSTR(); | |
2672 | DECODE_PRINTF("SUB\tAL,"); | |
2673 | srcval = fetch_byte_imm(); | |
2674 | DECODE_PRINTF2("%x\n", srcval); | |
2675 | TRACE_AND_STEP(); | |
2676 | M.x86.R_AL = sub_byte(M.x86.R_AL, srcval); | |
2677 | DECODE_CLEAR_SEGOVR(); | |
2678 | END_OF_INSTR(); | |
2679 | } | |
2680 | ||
2681 | /**************************************************************************** | |
2682 | REMARKS: | |
2683 | Handles opcode 0x2d | |
2684 | ****************************************************************************/ | |
2685 | static void | |
2686 | x86emuOp_sub_word_AX_IMM(u8 X86EMU_UNUSED(op1)) | |
2687 | { | |
2688 | u32 srcval; | |
2689 | ||
2690 | START_OF_INSTR(); | |
2691 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
2692 | DECODE_PRINTF("SUB\tEAX,"); | |
2693 | srcval = fetch_long_imm(); | |
2694 | } | |
2695 | else { | |
2696 | DECODE_PRINTF("SUB\tAX,"); | |
2697 | srcval = fetch_word_imm(); | |
2698 | } | |
2699 | DECODE_PRINTF2("%x\n", srcval); | |
2700 | TRACE_AND_STEP(); | |
2701 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
2702 | M.x86.R_EAX = sub_long(M.x86.R_EAX, srcval); | |
2703 | } | |
2704 | else { | |
2705 | M.x86.R_AX = sub_word(M.x86.R_AX, (u16) srcval); | |
2706 | } | |
2707 | DECODE_CLEAR_SEGOVR(); | |
2708 | END_OF_INSTR(); | |
2709 | } | |
2710 | ||
2711 | /**************************************************************************** | |
2712 | REMARKS: | |
2713 | Handles opcode 0x2e | |
2714 | ****************************************************************************/ | |
2715 | static void | |
2716 | x86emuOp_segovr_CS(u8 X86EMU_UNUSED(op1)) | |
2717 | { | |
2718 | START_OF_INSTR(); | |
2719 | DECODE_PRINTF("CS:\n"); | |
2720 | TRACE_AND_STEP(); | |
2721 | M.x86.mode |= SYSMODE_SEGOVR_CS; | |
2722 | /* note no DECODE_CLEAR_SEGOVR here. */ | |
2723 | END_OF_INSTR(); | |
2724 | } | |
2725 | ||
2726 | /**************************************************************************** | |
2727 | REMARKS: | |
2728 | Handles opcode 0x2f | |
2729 | ****************************************************************************/ | |
2730 | static void | |
2731 | x86emuOp_das(u8 X86EMU_UNUSED(op1)) | |
2732 | { | |
2733 | START_OF_INSTR(); | |
2734 | DECODE_PRINTF("DAS\n"); | |
2735 | TRACE_AND_STEP(); | |
2736 | M.x86.R_AL = das_byte(M.x86.R_AL); | |
2737 | DECODE_CLEAR_SEGOVR(); | |
2738 | END_OF_INSTR(); | |
2739 | } | |
2740 | ||
2741 | /**************************************************************************** | |
2742 | REMARKS: | |
2743 | Handles opcode 0x30 | |
2744 | ****************************************************************************/ | |
2745 | static void | |
2746 | x86emuOp_xor_byte_RM_R(u8 X86EMU_UNUSED(op1)) | |
2747 | { | |
2748 | int mod, rl, rh; | |
2749 | u8 *destreg, *srcreg; | |
2750 | uint destoffset; | |
2751 | u8 destval; | |
2752 | ||
2753 | START_OF_INSTR(); | |
2754 | DECODE_PRINTF("XOR\t"); | |
2755 | FETCH_DECODE_MODRM(mod, rh, rl); | |
2756 | switch (mod) { | |
2757 | case 0: | |
2758 | destoffset = decode_rm00_address(rl); | |
2759 | DECODE_PRINTF(","); | |
2760 | destval = fetch_data_byte(destoffset); | |
2761 | srcreg = DECODE_RM_BYTE_REGISTER(rh); | |
2762 | DECODE_PRINTF("\n"); | |
2763 | TRACE_AND_STEP(); | |
2764 | destval = xor_byte(destval, *srcreg); | |
2765 | store_data_byte(destoffset, destval); | |
2766 | break; | |
2767 | case 1: | |
2768 | destoffset = decode_rm01_address(rl); | |
2769 | DECODE_PRINTF(","); | |
2770 | destval = fetch_data_byte(destoffset); | |
2771 | srcreg = DECODE_RM_BYTE_REGISTER(rh); | |
2772 | DECODE_PRINTF("\n"); | |
2773 | TRACE_AND_STEP(); | |
2774 | destval = xor_byte(destval, *srcreg); | |
2775 | store_data_byte(destoffset, destval); | |
2776 | break; | |
2777 | case 2: | |
2778 | destoffset = decode_rm10_address(rl); | |
2779 | DECODE_PRINTF(","); | |
2780 | destval = fetch_data_byte(destoffset); | |
2781 | srcreg = DECODE_RM_BYTE_REGISTER(rh); | |
2782 | DECODE_PRINTF("\n"); | |
2783 | TRACE_AND_STEP(); | |
2784 | destval = xor_byte(destval, *srcreg); | |
2785 | store_data_byte(destoffset, destval); | |
2786 | break; | |
2787 | case 3: /* register to register */ | |
2788 | destreg = DECODE_RM_BYTE_REGISTER(rl); | |
2789 | DECODE_PRINTF(","); | |
2790 | srcreg = DECODE_RM_BYTE_REGISTER(rh); | |
2791 | DECODE_PRINTF("\n"); | |
2792 | TRACE_AND_STEP(); | |
2793 | *destreg = xor_byte(*destreg, *srcreg); | |
2794 | break; | |
2795 | } | |
2796 | DECODE_CLEAR_SEGOVR(); | |
2797 | END_OF_INSTR(); | |
2798 | } | |
2799 | ||
2800 | /**************************************************************************** | |
2801 | REMARKS: | |
2802 | Handles opcode 0x31 | |
2803 | ****************************************************************************/ | |
2804 | static void | |
2805 | x86emuOp_xor_word_RM_R(u8 X86EMU_UNUSED(op1)) | |
2806 | { | |
2807 | int mod, rl, rh; | |
2808 | uint destoffset; | |
2809 | ||
2810 | START_OF_INSTR(); | |
2811 | DECODE_PRINTF("XOR\t"); | |
2812 | FETCH_DECODE_MODRM(mod, rh, rl); | |
2813 | switch (mod) { | |
2814 | case 0: | |
2815 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
2816 | u32 destval; | |
2817 | u32 *srcreg; | |
2818 | ||
2819 | destoffset = decode_rm00_address(rl); | |
2820 | DECODE_PRINTF(","); | |
2821 | destval = fetch_data_long(destoffset); | |
2822 | srcreg = DECODE_RM_LONG_REGISTER(rh); | |
2823 | DECODE_PRINTF("\n"); | |
2824 | TRACE_AND_STEP(); | |
2825 | destval = xor_long(destval, *srcreg); | |
2826 | store_data_long(destoffset, destval); | |
2827 | } | |
2828 | else { | |
2829 | u16 destval; | |
2830 | u16 *srcreg; | |
2831 | ||
2832 | destoffset = decode_rm00_address(rl); | |
2833 | DECODE_PRINTF(","); | |
2834 | destval = fetch_data_word(destoffset); | |
2835 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
2836 | DECODE_PRINTF("\n"); | |
2837 | TRACE_AND_STEP(); | |
2838 | destval = xor_word(destval, *srcreg); | |
2839 | store_data_word(destoffset, destval); | |
2840 | } | |
2841 | break; | |
2842 | case 1: | |
2843 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
2844 | u32 destval; | |
2845 | u32 *srcreg; | |
2846 | ||
2847 | destoffset = decode_rm01_address(rl); | |
2848 | DECODE_PRINTF(","); | |
2849 | destval = fetch_data_long(destoffset); | |
2850 | srcreg = DECODE_RM_LONG_REGISTER(rh); | |
2851 | DECODE_PRINTF("\n"); | |
2852 | TRACE_AND_STEP(); | |
2853 | destval = xor_long(destval, *srcreg); | |
2854 | store_data_long(destoffset, destval); | |
2855 | } | |
2856 | else { | |
2857 | u16 destval; | |
2858 | u16 *srcreg; | |
2859 | ||
2860 | destoffset = decode_rm01_address(rl); | |
2861 | DECODE_PRINTF(","); | |
2862 | destval = fetch_data_word(destoffset); | |
2863 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
2864 | DECODE_PRINTF("\n"); | |
2865 | TRACE_AND_STEP(); | |
2866 | destval = xor_word(destval, *srcreg); | |
2867 | store_data_word(destoffset, destval); | |
2868 | } | |
2869 | break; | |
2870 | case 2: | |
2871 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
2872 | u32 destval; | |
2873 | u32 *srcreg; | |
2874 | ||
2875 | destoffset = decode_rm10_address(rl); | |
2876 | DECODE_PRINTF(","); | |
2877 | destval = fetch_data_long(destoffset); | |
2878 | srcreg = DECODE_RM_LONG_REGISTER(rh); | |
2879 | DECODE_PRINTF("\n"); | |
2880 | TRACE_AND_STEP(); | |
2881 | destval = xor_long(destval, *srcreg); | |
2882 | store_data_long(destoffset, destval); | |
2883 | } | |
2884 | else { | |
2885 | u16 destval; | |
2886 | u16 *srcreg; | |
2887 | ||
2888 | destoffset = decode_rm10_address(rl); | |
2889 | DECODE_PRINTF(","); | |
2890 | destval = fetch_data_word(destoffset); | |
2891 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
2892 | DECODE_PRINTF("\n"); | |
2893 | TRACE_AND_STEP(); | |
2894 | destval = xor_word(destval, *srcreg); | |
2895 | store_data_word(destoffset, destval); | |
2896 | } | |
2897 | break; | |
2898 | case 3: /* register to register */ | |
2899 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
2900 | u32 *destreg, *srcreg; | |
2901 | ||
2902 | destreg = DECODE_RM_LONG_REGISTER(rl); | |
2903 | DECODE_PRINTF(","); | |
2904 | srcreg = DECODE_RM_LONG_REGISTER(rh); | |
2905 | DECODE_PRINTF("\n"); | |
2906 | TRACE_AND_STEP(); | |
2907 | *destreg = xor_long(*destreg, *srcreg); | |
2908 | } | |
2909 | else { | |
2910 | u16 *destreg, *srcreg; | |
2911 | ||
2912 | destreg = DECODE_RM_WORD_REGISTER(rl); | |
2913 | DECODE_PRINTF(","); | |
2914 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
2915 | DECODE_PRINTF("\n"); | |
2916 | TRACE_AND_STEP(); | |
2917 | *destreg = xor_word(*destreg, *srcreg); | |
2918 | } | |
2919 | break; | |
2920 | } | |
2921 | DECODE_CLEAR_SEGOVR(); | |
2922 | END_OF_INSTR(); | |
2923 | } | |
2924 | ||
2925 | /**************************************************************************** | |
2926 | REMARKS: | |
2927 | Handles opcode 0x32 | |
2928 | ****************************************************************************/ | |
2929 | static void | |
2930 | x86emuOp_xor_byte_R_RM(u8 X86EMU_UNUSED(op1)) | |
2931 | { | |
2932 | int mod, rl, rh; | |
2933 | u8 *destreg, *srcreg; | |
2934 | uint srcoffset; | |
2935 | u8 srcval; | |
2936 | ||
2937 | START_OF_INSTR(); | |
2938 | DECODE_PRINTF("XOR\t"); | |
2939 | FETCH_DECODE_MODRM(mod, rh, rl); | |
2940 | switch (mod) { | |
2941 | case 0: | |
2942 | destreg = DECODE_RM_BYTE_REGISTER(rh); | |
2943 | DECODE_PRINTF(","); | |
2944 | srcoffset = decode_rm00_address(rl); | |
2945 | srcval = fetch_data_byte(srcoffset); | |
2946 | DECODE_PRINTF("\n"); | |
2947 | TRACE_AND_STEP(); | |
2948 | *destreg = xor_byte(*destreg, srcval); | |
2949 | break; | |
2950 | case 1: | |
2951 | destreg = DECODE_RM_BYTE_REGISTER(rh); | |
2952 | DECODE_PRINTF(","); | |
2953 | srcoffset = decode_rm01_address(rl); | |
2954 | srcval = fetch_data_byte(srcoffset); | |
2955 | DECODE_PRINTF("\n"); | |
2956 | TRACE_AND_STEP(); | |
2957 | *destreg = xor_byte(*destreg, srcval); | |
2958 | break; | |
2959 | case 2: | |
2960 | destreg = DECODE_RM_BYTE_REGISTER(rh); | |
2961 | DECODE_PRINTF(","); | |
2962 | srcoffset = decode_rm10_address(rl); | |
2963 | srcval = fetch_data_byte(srcoffset); | |
2964 | DECODE_PRINTF("\n"); | |
2965 | TRACE_AND_STEP(); | |
2966 | *destreg = xor_byte(*destreg, srcval); | |
2967 | break; | |
2968 | case 3: /* register to register */ | |
2969 | destreg = DECODE_RM_BYTE_REGISTER(rh); | |
2970 | DECODE_PRINTF(","); | |
2971 | srcreg = DECODE_RM_BYTE_REGISTER(rl); | |
2972 | DECODE_PRINTF("\n"); | |
2973 | TRACE_AND_STEP(); | |
2974 | *destreg = xor_byte(*destreg, *srcreg); | |
2975 | break; | |
2976 | } | |
2977 | DECODE_CLEAR_SEGOVR(); | |
2978 | END_OF_INSTR(); | |
2979 | } | |
2980 | ||
2981 | /**************************************************************************** | |
2982 | REMARKS: | |
2983 | Handles opcode 0x33 | |
2984 | ****************************************************************************/ | |
2985 | static void | |
2986 | x86emuOp_xor_word_R_RM(u8 X86EMU_UNUSED(op1)) | |
2987 | { | |
2988 | int mod, rl, rh; | |
2989 | uint srcoffset; | |
2990 | ||
2991 | START_OF_INSTR(); | |
2992 | DECODE_PRINTF("XOR\t"); | |
2993 | FETCH_DECODE_MODRM(mod, rh, rl); | |
2994 | switch (mod) { | |
2995 | case 0: | |
2996 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
2997 | u32 *destreg; | |
2998 | u32 srcval; | |
2999 | ||
3000 | destreg = DECODE_RM_LONG_REGISTER(rh); | |
3001 | DECODE_PRINTF(","); | |
3002 | srcoffset = decode_rm00_address(rl); | |
3003 | srcval = fetch_data_long(srcoffset); | |
3004 | DECODE_PRINTF("\n"); | |
3005 | TRACE_AND_STEP(); | |
3006 | *destreg = xor_long(*destreg, srcval); | |
3007 | } | |
3008 | else { | |
3009 | u16 *destreg; | |
3010 | u16 srcval; | |
3011 | ||
3012 | destreg = DECODE_RM_WORD_REGISTER(rh); | |
3013 | DECODE_PRINTF(","); | |
3014 | srcoffset = decode_rm00_address(rl); | |
3015 | srcval = fetch_data_word(srcoffset); | |
3016 | DECODE_PRINTF("\n"); | |
3017 | TRACE_AND_STEP(); | |
3018 | *destreg = xor_word(*destreg, srcval); | |
3019 | } | |
3020 | break; | |
3021 | case 1: | |
3022 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3023 | u32 *destreg; | |
3024 | u32 srcval; | |
3025 | ||
3026 | destreg = DECODE_RM_LONG_REGISTER(rh); | |
3027 | DECODE_PRINTF(","); | |
3028 | srcoffset = decode_rm01_address(rl); | |
3029 | srcval = fetch_data_long(srcoffset); | |
3030 | DECODE_PRINTF("\n"); | |
3031 | TRACE_AND_STEP(); | |
3032 | *destreg = xor_long(*destreg, srcval); | |
3033 | } | |
3034 | else { | |
3035 | u16 *destreg; | |
3036 | u16 srcval; | |
3037 | ||
3038 | destreg = DECODE_RM_WORD_REGISTER(rh); | |
3039 | DECODE_PRINTF(","); | |
3040 | srcoffset = decode_rm01_address(rl); | |
3041 | srcval = fetch_data_word(srcoffset); | |
3042 | DECODE_PRINTF("\n"); | |
3043 | TRACE_AND_STEP(); | |
3044 | *destreg = xor_word(*destreg, srcval); | |
3045 | } | |
3046 | break; | |
3047 | case 2: | |
3048 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3049 | u32 *destreg; | |
3050 | u32 srcval; | |
3051 | ||
3052 | destreg = DECODE_RM_LONG_REGISTER(rh); | |
3053 | DECODE_PRINTF(","); | |
3054 | srcoffset = decode_rm10_address(rl); | |
3055 | srcval = fetch_data_long(srcoffset); | |
3056 | DECODE_PRINTF("\n"); | |
3057 | TRACE_AND_STEP(); | |
3058 | *destreg = xor_long(*destreg, srcval); | |
3059 | } | |
3060 | else { | |
3061 | u16 *destreg; | |
3062 | u16 srcval; | |
3063 | ||
3064 | destreg = DECODE_RM_WORD_REGISTER(rh); | |
3065 | DECODE_PRINTF(","); | |
3066 | srcoffset = decode_rm10_address(rl); | |
3067 | srcval = fetch_data_word(srcoffset); | |
3068 | DECODE_PRINTF("\n"); | |
3069 | TRACE_AND_STEP(); | |
3070 | *destreg = xor_word(*destreg, srcval); | |
3071 | } | |
3072 | break; | |
3073 | case 3: /* register to register */ | |
3074 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3075 | u32 *destreg, *srcreg; | |
3076 | ||
3077 | destreg = DECODE_RM_LONG_REGISTER(rh); | |
3078 | DECODE_PRINTF(","); | |
3079 | srcreg = DECODE_RM_LONG_REGISTER(rl); | |
3080 | DECODE_PRINTF("\n"); | |
3081 | TRACE_AND_STEP(); | |
3082 | *destreg = xor_long(*destreg, *srcreg); | |
3083 | } | |
3084 | else { | |
3085 | u16 *destreg, *srcreg; | |
3086 | ||
3087 | destreg = DECODE_RM_WORD_REGISTER(rh); | |
3088 | DECODE_PRINTF(","); | |
3089 | srcreg = DECODE_RM_WORD_REGISTER(rl); | |
3090 | DECODE_PRINTF("\n"); | |
3091 | TRACE_AND_STEP(); | |
3092 | *destreg = xor_word(*destreg, *srcreg); | |
3093 | } | |
3094 | break; | |
3095 | } | |
3096 | DECODE_CLEAR_SEGOVR(); | |
3097 | END_OF_INSTR(); | |
3098 | } | |
3099 | ||
3100 | /**************************************************************************** | |
3101 | REMARKS: | |
3102 | Handles opcode 0x34 | |
3103 | ****************************************************************************/ | |
3104 | static void | |
3105 | x86emuOp_xor_byte_AL_IMM(u8 X86EMU_UNUSED(op1)) | |
3106 | { | |
3107 | u8 srcval; | |
3108 | ||
3109 | START_OF_INSTR(); | |
3110 | DECODE_PRINTF("XOR\tAL,"); | |
3111 | srcval = fetch_byte_imm(); | |
3112 | DECODE_PRINTF2("%x\n", srcval); | |
3113 | TRACE_AND_STEP(); | |
3114 | M.x86.R_AL = xor_byte(M.x86.R_AL, srcval); | |
3115 | DECODE_CLEAR_SEGOVR(); | |
3116 | END_OF_INSTR(); | |
3117 | } | |
3118 | ||
3119 | /**************************************************************************** | |
3120 | REMARKS: | |
3121 | Handles opcode 0x35 | |
3122 | ****************************************************************************/ | |
3123 | static void | |
3124 | x86emuOp_xor_word_AX_IMM(u8 X86EMU_UNUSED(op1)) | |
3125 | { | |
3126 | u32 srcval; | |
3127 | ||
3128 | START_OF_INSTR(); | |
3129 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3130 | DECODE_PRINTF("XOR\tEAX,"); | |
3131 | srcval = fetch_long_imm(); | |
3132 | } | |
3133 | else { | |
3134 | DECODE_PRINTF("XOR\tAX,"); | |
3135 | srcval = fetch_word_imm(); | |
3136 | } | |
3137 | DECODE_PRINTF2("%x\n", srcval); | |
3138 | TRACE_AND_STEP(); | |
3139 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3140 | M.x86.R_EAX = xor_long(M.x86.R_EAX, srcval); | |
3141 | } | |
3142 | else { | |
3143 | M.x86.R_AX = xor_word(M.x86.R_AX, (u16) srcval); | |
3144 | } | |
3145 | DECODE_CLEAR_SEGOVR(); | |
3146 | END_OF_INSTR(); | |
3147 | } | |
3148 | ||
3149 | /**************************************************************************** | |
3150 | REMARKS: | |
3151 | Handles opcode 0x36 | |
3152 | ****************************************************************************/ | |
3153 | static void | |
3154 | x86emuOp_segovr_SS(u8 X86EMU_UNUSED(op1)) | |
3155 | { | |
3156 | START_OF_INSTR(); | |
3157 | DECODE_PRINTF("SS:\n"); | |
3158 | TRACE_AND_STEP(); | |
3159 | M.x86.mode |= SYSMODE_SEGOVR_SS; | |
3160 | /* no DECODE_CLEAR_SEGOVR ! */ | |
3161 | END_OF_INSTR(); | |
3162 | } | |
3163 | ||
3164 | /**************************************************************************** | |
3165 | REMARKS: | |
3166 | Handles opcode 0x37 | |
3167 | ****************************************************************************/ | |
3168 | static void | |
3169 | x86emuOp_aaa(u8 X86EMU_UNUSED(op1)) | |
3170 | { | |
3171 | START_OF_INSTR(); | |
3172 | DECODE_PRINTF("AAA\n"); | |
3173 | TRACE_AND_STEP(); | |
3174 | M.x86.R_AX = aaa_word(M.x86.R_AX); | |
3175 | DECODE_CLEAR_SEGOVR(); | |
3176 | END_OF_INSTR(); | |
3177 | } | |
3178 | ||
3179 | /**************************************************************************** | |
3180 | REMARKS: | |
3181 | Handles opcode 0x38 | |
3182 | ****************************************************************************/ | |
3183 | static void | |
3184 | x86emuOp_cmp_byte_RM_R(u8 X86EMU_UNUSED(op1)) | |
3185 | { | |
3186 | int mod, rl, rh; | |
3187 | uint destoffset; | |
3188 | u8 *destreg, *srcreg; | |
3189 | u8 destval; | |
3190 | ||
3191 | START_OF_INSTR(); | |
3192 | DECODE_PRINTF("CMP\t"); | |
3193 | FETCH_DECODE_MODRM(mod, rh, rl); | |
3194 | switch (mod) { | |
3195 | case 0: | |
3196 | destoffset = decode_rm00_address(rl); | |
3197 | DECODE_PRINTF(","); | |
3198 | destval = fetch_data_byte(destoffset); | |
3199 | srcreg = DECODE_RM_BYTE_REGISTER(rh); | |
3200 | DECODE_PRINTF("\n"); | |
3201 | TRACE_AND_STEP(); | |
3202 | cmp_byte(destval, *srcreg); | |
3203 | break; | |
3204 | case 1: | |
3205 | destoffset = decode_rm01_address(rl); | |
3206 | DECODE_PRINTF(","); | |
3207 | destval = fetch_data_byte(destoffset); | |
3208 | srcreg = DECODE_RM_BYTE_REGISTER(rh); | |
3209 | DECODE_PRINTF("\n"); | |
3210 | TRACE_AND_STEP(); | |
3211 | cmp_byte(destval, *srcreg); | |
3212 | break; | |
3213 | case 2: | |
3214 | destoffset = decode_rm10_address(rl); | |
3215 | DECODE_PRINTF(","); | |
3216 | destval = fetch_data_byte(destoffset); | |
3217 | srcreg = DECODE_RM_BYTE_REGISTER(rh); | |
3218 | DECODE_PRINTF("\n"); | |
3219 | TRACE_AND_STEP(); | |
3220 | cmp_byte(destval, *srcreg); | |
3221 | break; | |
3222 | case 3: /* register to register */ | |
3223 | destreg = DECODE_RM_BYTE_REGISTER(rl); | |
3224 | DECODE_PRINTF(","); | |
3225 | srcreg = DECODE_RM_BYTE_REGISTER(rh); | |
3226 | DECODE_PRINTF("\n"); | |
3227 | TRACE_AND_STEP(); | |
3228 | cmp_byte(*destreg, *srcreg); | |
3229 | break; | |
3230 | } | |
3231 | DECODE_CLEAR_SEGOVR(); | |
3232 | END_OF_INSTR(); | |
3233 | } | |
3234 | ||
3235 | /**************************************************************************** | |
3236 | REMARKS: | |
3237 | Handles opcode 0x39 | |
3238 | ****************************************************************************/ | |
3239 | static void | |
3240 | x86emuOp_cmp_word_RM_R(u8 X86EMU_UNUSED(op1)) | |
3241 | { | |
3242 | int mod, rl, rh; | |
3243 | uint destoffset; | |
3244 | ||
3245 | START_OF_INSTR(); | |
3246 | DECODE_PRINTF("CMP\t"); | |
3247 | FETCH_DECODE_MODRM(mod, rh, rl); | |
3248 | switch (mod) { | |
3249 | case 0: | |
3250 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3251 | u32 destval; | |
3252 | u32 *srcreg; | |
3253 | ||
3254 | destoffset = decode_rm00_address(rl); | |
3255 | DECODE_PRINTF(","); | |
3256 | destval = fetch_data_long(destoffset); | |
3257 | srcreg = DECODE_RM_LONG_REGISTER(rh); | |
3258 | DECODE_PRINTF("\n"); | |
3259 | TRACE_AND_STEP(); | |
3260 | cmp_long(destval, *srcreg); | |
3261 | } | |
3262 | else { | |
3263 | u16 destval; | |
3264 | u16 *srcreg; | |
3265 | ||
3266 | destoffset = decode_rm00_address(rl); | |
3267 | DECODE_PRINTF(","); | |
3268 | destval = fetch_data_word(destoffset); | |
3269 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
3270 | DECODE_PRINTF("\n"); | |
3271 | TRACE_AND_STEP(); | |
3272 | cmp_word(destval, *srcreg); | |
3273 | } | |
3274 | break; | |
3275 | case 1: | |
3276 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3277 | u32 destval; | |
3278 | u32 *srcreg; | |
3279 | ||
3280 | destoffset = decode_rm01_address(rl); | |
3281 | DECODE_PRINTF(","); | |
3282 | destval = fetch_data_long(destoffset); | |
3283 | srcreg = DECODE_RM_LONG_REGISTER(rh); | |
3284 | DECODE_PRINTF("\n"); | |
3285 | TRACE_AND_STEP(); | |
3286 | cmp_long(destval, *srcreg); | |
3287 | } | |
3288 | else { | |
3289 | u16 destval; | |
3290 | u16 *srcreg; | |
3291 | ||
3292 | destoffset = decode_rm01_address(rl); | |
3293 | DECODE_PRINTF(","); | |
3294 | destval = fetch_data_word(destoffset); | |
3295 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
3296 | DECODE_PRINTF("\n"); | |
3297 | TRACE_AND_STEP(); | |
3298 | cmp_word(destval, *srcreg); | |
3299 | } | |
3300 | break; | |
3301 | case 2: | |
3302 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3303 | u32 destval; | |
3304 | u32 *srcreg; | |
3305 | ||
3306 | destoffset = decode_rm10_address(rl); | |
3307 | DECODE_PRINTF(","); | |
3308 | destval = fetch_data_long(destoffset); | |
3309 | srcreg = DECODE_RM_LONG_REGISTER(rh); | |
3310 | DECODE_PRINTF("\n"); | |
3311 | TRACE_AND_STEP(); | |
3312 | cmp_long(destval, *srcreg); | |
3313 | } | |
3314 | else { | |
3315 | u16 destval; | |
3316 | u16 *srcreg; | |
3317 | ||
3318 | destoffset = decode_rm10_address(rl); | |
3319 | DECODE_PRINTF(","); | |
3320 | destval = fetch_data_word(destoffset); | |
3321 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
3322 | DECODE_PRINTF("\n"); | |
3323 | TRACE_AND_STEP(); | |
3324 | cmp_word(destval, *srcreg); | |
3325 | } | |
3326 | break; | |
3327 | case 3: /* register to register */ | |
3328 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3329 | u32 *destreg, *srcreg; | |
3330 | ||
3331 | destreg = DECODE_RM_LONG_REGISTER(rl); | |
3332 | DECODE_PRINTF(","); | |
3333 | srcreg = DECODE_RM_LONG_REGISTER(rh); | |
3334 | DECODE_PRINTF("\n"); | |
3335 | TRACE_AND_STEP(); | |
3336 | cmp_long(*destreg, *srcreg); | |
3337 | } | |
3338 | else { | |
3339 | u16 *destreg, *srcreg; | |
3340 | ||
3341 | destreg = DECODE_RM_WORD_REGISTER(rl); | |
3342 | DECODE_PRINTF(","); | |
3343 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
3344 | DECODE_PRINTF("\n"); | |
3345 | TRACE_AND_STEP(); | |
3346 | cmp_word(*destreg, *srcreg); | |
3347 | } | |
3348 | break; | |
3349 | } | |
3350 | DECODE_CLEAR_SEGOVR(); | |
3351 | END_OF_INSTR(); | |
3352 | } | |
3353 | ||
3354 | /**************************************************************************** | |
3355 | REMARKS: | |
3356 | Handles opcode 0x3a | |
3357 | ****************************************************************************/ | |
3358 | static void | |
3359 | x86emuOp_cmp_byte_R_RM(u8 X86EMU_UNUSED(op1)) | |
3360 | { | |
3361 | int mod, rl, rh; | |
3362 | u8 *destreg, *srcreg; | |
3363 | uint srcoffset; | |
3364 | u8 srcval; | |
3365 | ||
3366 | START_OF_INSTR(); | |
3367 | DECODE_PRINTF("CMP\t"); | |
3368 | FETCH_DECODE_MODRM(mod, rh, rl); | |
3369 | switch (mod) { | |
3370 | case 0: | |
3371 | destreg = DECODE_RM_BYTE_REGISTER(rh); | |
3372 | DECODE_PRINTF(","); | |
3373 | srcoffset = decode_rm00_address(rl); | |
3374 | srcval = fetch_data_byte(srcoffset); | |
3375 | DECODE_PRINTF("\n"); | |
3376 | TRACE_AND_STEP(); | |
3377 | cmp_byte(*destreg, srcval); | |
3378 | break; | |
3379 | case 1: | |
3380 | destreg = DECODE_RM_BYTE_REGISTER(rh); | |
3381 | DECODE_PRINTF(","); | |
3382 | srcoffset = decode_rm01_address(rl); | |
3383 | srcval = fetch_data_byte(srcoffset); | |
3384 | DECODE_PRINTF("\n"); | |
3385 | TRACE_AND_STEP(); | |
3386 | cmp_byte(*destreg, srcval); | |
3387 | break; | |
3388 | case 2: | |
3389 | destreg = DECODE_RM_BYTE_REGISTER(rh); | |
3390 | DECODE_PRINTF(","); | |
3391 | srcoffset = decode_rm10_address(rl); | |
3392 | srcval = fetch_data_byte(srcoffset); | |
3393 | DECODE_PRINTF("\n"); | |
3394 | TRACE_AND_STEP(); | |
3395 | cmp_byte(*destreg, srcval); | |
3396 | break; | |
3397 | case 3: /* register to register */ | |
3398 | destreg = DECODE_RM_BYTE_REGISTER(rh); | |
3399 | DECODE_PRINTF(","); | |
3400 | srcreg = DECODE_RM_BYTE_REGISTER(rl); | |
3401 | DECODE_PRINTF("\n"); | |
3402 | TRACE_AND_STEP(); | |
3403 | cmp_byte(*destreg, *srcreg); | |
3404 | break; | |
3405 | } | |
3406 | DECODE_CLEAR_SEGOVR(); | |
3407 | END_OF_INSTR(); | |
3408 | } | |
3409 | ||
3410 | /**************************************************************************** | |
3411 | REMARKS: | |
3412 | Handles opcode 0x3b | |
3413 | ****************************************************************************/ | |
3414 | static void | |
3415 | x86emuOp_cmp_word_R_RM(u8 X86EMU_UNUSED(op1)) | |
3416 | { | |
3417 | int mod, rl, rh; | |
3418 | uint srcoffset; | |
3419 | ||
3420 | START_OF_INSTR(); | |
3421 | DECODE_PRINTF("CMP\t"); | |
3422 | FETCH_DECODE_MODRM(mod, rh, rl); | |
3423 | switch (mod) { | |
3424 | case 0: | |
3425 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3426 | u32 *destreg; | |
3427 | u32 srcval; | |
3428 | ||
3429 | destreg = DECODE_RM_LONG_REGISTER(rh); | |
3430 | DECODE_PRINTF(","); | |
3431 | srcoffset = decode_rm00_address(rl); | |
3432 | srcval = fetch_data_long(srcoffset); | |
3433 | DECODE_PRINTF("\n"); | |
3434 | TRACE_AND_STEP(); | |
3435 | cmp_long(*destreg, srcval); | |
3436 | } | |
3437 | else { | |
3438 | u16 *destreg; | |
3439 | u16 srcval; | |
3440 | ||
3441 | destreg = DECODE_RM_WORD_REGISTER(rh); | |
3442 | DECODE_PRINTF(","); | |
3443 | srcoffset = decode_rm00_address(rl); | |
3444 | srcval = fetch_data_word(srcoffset); | |
3445 | DECODE_PRINTF("\n"); | |
3446 | TRACE_AND_STEP(); | |
3447 | cmp_word(*destreg, srcval); | |
3448 | } | |
3449 | break; | |
3450 | case 1: | |
3451 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3452 | u32 *destreg; | |
3453 | u32 srcval; | |
3454 | ||
3455 | destreg = DECODE_RM_LONG_REGISTER(rh); | |
3456 | DECODE_PRINTF(","); | |
3457 | srcoffset = decode_rm01_address(rl); | |
3458 | srcval = fetch_data_long(srcoffset); | |
3459 | DECODE_PRINTF("\n"); | |
3460 | TRACE_AND_STEP(); | |
3461 | cmp_long(*destreg, srcval); | |
3462 | } | |
3463 | else { | |
3464 | u16 *destreg; | |
3465 | u16 srcval; | |
3466 | ||
3467 | destreg = DECODE_RM_WORD_REGISTER(rh); | |
3468 | DECODE_PRINTF(","); | |
3469 | srcoffset = decode_rm01_address(rl); | |
3470 | srcval = fetch_data_word(srcoffset); | |
3471 | DECODE_PRINTF("\n"); | |
3472 | TRACE_AND_STEP(); | |
3473 | cmp_word(*destreg, srcval); | |
3474 | } | |
3475 | break; | |
3476 | case 2: | |
3477 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3478 | u32 *destreg; | |
3479 | u32 srcval; | |
3480 | ||
3481 | destreg = DECODE_RM_LONG_REGISTER(rh); | |
3482 | DECODE_PRINTF(","); | |
3483 | srcoffset = decode_rm10_address(rl); | |
3484 | srcval = fetch_data_long(srcoffset); | |
3485 | DECODE_PRINTF("\n"); | |
3486 | TRACE_AND_STEP(); | |
3487 | cmp_long(*destreg, srcval); | |
3488 | } | |
3489 | else { | |
3490 | u16 *destreg; | |
3491 | u16 srcval; | |
3492 | ||
3493 | destreg = DECODE_RM_WORD_REGISTER(rh); | |
3494 | DECODE_PRINTF(","); | |
3495 | srcoffset = decode_rm10_address(rl); | |
3496 | srcval = fetch_data_word(srcoffset); | |
3497 | DECODE_PRINTF("\n"); | |
3498 | TRACE_AND_STEP(); | |
3499 | cmp_word(*destreg, srcval); | |
3500 | } | |
3501 | break; | |
3502 | case 3: /* register to register */ | |
3503 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3504 | u32 *destreg, *srcreg; | |
3505 | ||
3506 | destreg = DECODE_RM_LONG_REGISTER(rh); | |
3507 | DECODE_PRINTF(","); | |
3508 | srcreg = DECODE_RM_LONG_REGISTER(rl); | |
3509 | DECODE_PRINTF("\n"); | |
3510 | TRACE_AND_STEP(); | |
3511 | cmp_long(*destreg, *srcreg); | |
3512 | } | |
3513 | else { | |
3514 | u16 *destreg, *srcreg; | |
3515 | ||
3516 | destreg = DECODE_RM_WORD_REGISTER(rh); | |
3517 | DECODE_PRINTF(","); | |
3518 | srcreg = DECODE_RM_WORD_REGISTER(rl); | |
3519 | DECODE_PRINTF("\n"); | |
3520 | TRACE_AND_STEP(); | |
3521 | cmp_word(*destreg, *srcreg); | |
3522 | } | |
3523 | break; | |
3524 | } | |
3525 | DECODE_CLEAR_SEGOVR(); | |
3526 | END_OF_INSTR(); | |
3527 | } | |
3528 | ||
3529 | /**************************************************************************** | |
3530 | REMARKS: | |
3531 | Handles opcode 0x3c | |
3532 | ****************************************************************************/ | |
3533 | static void | |
3534 | x86emuOp_cmp_byte_AL_IMM(u8 X86EMU_UNUSED(op1)) | |
3535 | { | |
3536 | u8 srcval; | |
3537 | ||
3538 | START_OF_INSTR(); | |
3539 | DECODE_PRINTF("CMP\tAL,"); | |
3540 | srcval = fetch_byte_imm(); | |
3541 | DECODE_PRINTF2("%x\n", srcval); | |
3542 | TRACE_AND_STEP(); | |
3543 | cmp_byte(M.x86.R_AL, srcval); | |
3544 | DECODE_CLEAR_SEGOVR(); | |
3545 | END_OF_INSTR(); | |
3546 | } | |
3547 | ||
3548 | /**************************************************************************** | |
3549 | REMARKS: | |
3550 | Handles opcode 0x3d | |
3551 | ****************************************************************************/ | |
3552 | static void | |
3553 | x86emuOp_cmp_word_AX_IMM(u8 X86EMU_UNUSED(op1)) | |
3554 | { | |
3555 | u32 srcval; | |
3556 | ||
3557 | START_OF_INSTR(); | |
3558 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3559 | DECODE_PRINTF("CMP\tEAX,"); | |
3560 | srcval = fetch_long_imm(); | |
3561 | } | |
3562 | else { | |
3563 | DECODE_PRINTF("CMP\tAX,"); | |
3564 | srcval = fetch_word_imm(); | |
3565 | } | |
3566 | DECODE_PRINTF2("%x\n", srcval); | |
3567 | TRACE_AND_STEP(); | |
3568 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3569 | cmp_long(M.x86.R_EAX, srcval); | |
3570 | } | |
3571 | else { | |
3572 | cmp_word(M.x86.R_AX, (u16) srcval); | |
3573 | } | |
3574 | DECODE_CLEAR_SEGOVR(); | |
3575 | END_OF_INSTR(); | |
3576 | } | |
3577 | ||
3578 | /**************************************************************************** | |
3579 | REMARKS: | |
3580 | Handles opcode 0x3e | |
3581 | ****************************************************************************/ | |
3582 | static void | |
3583 | x86emuOp_segovr_DS(u8 X86EMU_UNUSED(op1)) | |
3584 | { | |
3585 | START_OF_INSTR(); | |
3586 | DECODE_PRINTF("DS:\n"); | |
3587 | TRACE_AND_STEP(); | |
3588 | M.x86.mode |= SYSMODE_SEGOVR_DS; | |
3589 | /* NO DECODE_CLEAR_SEGOVR! */ | |
3590 | END_OF_INSTR(); | |
3591 | } | |
3592 | ||
3593 | /**************************************************************************** | |
3594 | REMARKS: | |
3595 | Handles opcode 0x3f | |
3596 | ****************************************************************************/ | |
3597 | static void | |
3598 | x86emuOp_aas(u8 X86EMU_UNUSED(op1)) | |
3599 | { | |
3600 | START_OF_INSTR(); | |
3601 | DECODE_PRINTF("AAS\n"); | |
3602 | TRACE_AND_STEP(); | |
3603 | M.x86.R_AX = aas_word(M.x86.R_AX); | |
3604 | DECODE_CLEAR_SEGOVR(); | |
3605 | END_OF_INSTR(); | |
3606 | } | |
3607 | ||
3608 | /**************************************************************************** | |
3609 | REMARKS: | |
3610 | Handles opcode 0x40 | |
3611 | ****************************************************************************/ | |
3612 | static void | |
3613 | x86emuOp_inc_AX(u8 X86EMU_UNUSED(op1)) | |
3614 | { | |
3615 | START_OF_INSTR(); | |
3616 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3617 | DECODE_PRINTF("INC\tEAX\n"); | |
3618 | } | |
3619 | else { | |
3620 | DECODE_PRINTF("INC\tAX\n"); | |
3621 | } | |
3622 | TRACE_AND_STEP(); | |
3623 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3624 | M.x86.R_EAX = inc_long(M.x86.R_EAX); | |
3625 | } | |
3626 | else { | |
3627 | M.x86.R_AX = inc_word(M.x86.R_AX); | |
3628 | } | |
3629 | DECODE_CLEAR_SEGOVR(); | |
3630 | END_OF_INSTR(); | |
3631 | } | |
3632 | ||
3633 | /**************************************************************************** | |
3634 | REMARKS: | |
3635 | Handles opcode 0x41 | |
3636 | ****************************************************************************/ | |
3637 | static void | |
3638 | x86emuOp_inc_CX(u8 X86EMU_UNUSED(op1)) | |
3639 | { | |
3640 | START_OF_INSTR(); | |
3641 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3642 | DECODE_PRINTF("INC\tECX\n"); | |
3643 | } | |
3644 | else { | |
3645 | DECODE_PRINTF("INC\tCX\n"); | |
3646 | } | |
3647 | TRACE_AND_STEP(); | |
3648 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3649 | M.x86.R_ECX = inc_long(M.x86.R_ECX); | |
3650 | } | |
3651 | else { | |
3652 | M.x86.R_CX = inc_word(M.x86.R_CX); | |
3653 | } | |
3654 | DECODE_CLEAR_SEGOVR(); | |
3655 | END_OF_INSTR(); | |
3656 | } | |
3657 | ||
3658 | /**************************************************************************** | |
3659 | REMARKS: | |
3660 | Handles opcode 0x42 | |
3661 | ****************************************************************************/ | |
3662 | static void | |
3663 | x86emuOp_inc_DX(u8 X86EMU_UNUSED(op1)) | |
3664 | { | |
3665 | START_OF_INSTR(); | |
3666 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3667 | DECODE_PRINTF("INC\tEDX\n"); | |
3668 | } | |
3669 | else { | |
3670 | DECODE_PRINTF("INC\tDX\n"); | |
3671 | } | |
3672 | TRACE_AND_STEP(); | |
3673 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3674 | M.x86.R_EDX = inc_long(M.x86.R_EDX); | |
3675 | } | |
3676 | else { | |
3677 | M.x86.R_DX = inc_word(M.x86.R_DX); | |
3678 | } | |
3679 | DECODE_CLEAR_SEGOVR(); | |
3680 | END_OF_INSTR(); | |
3681 | } | |
3682 | ||
3683 | /**************************************************************************** | |
3684 | REMARKS: | |
3685 | Handles opcode 0x43 | |
3686 | ****************************************************************************/ | |
3687 | static void | |
3688 | x86emuOp_inc_BX(u8 X86EMU_UNUSED(op1)) | |
3689 | { | |
3690 | START_OF_INSTR(); | |
3691 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3692 | DECODE_PRINTF("INC\tEBX\n"); | |
3693 | } | |
3694 | else { | |
3695 | DECODE_PRINTF("INC\tBX\n"); | |
3696 | } | |
3697 | TRACE_AND_STEP(); | |
3698 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3699 | M.x86.R_EBX = inc_long(M.x86.R_EBX); | |
3700 | } | |
3701 | else { | |
3702 | M.x86.R_BX = inc_word(M.x86.R_BX); | |
3703 | } | |
3704 | DECODE_CLEAR_SEGOVR(); | |
3705 | END_OF_INSTR(); | |
3706 | } | |
3707 | ||
3708 | /**************************************************************************** | |
3709 | REMARKS: | |
3710 | Handles opcode 0x44 | |
3711 | ****************************************************************************/ | |
3712 | static void | |
3713 | x86emuOp_inc_SP(u8 X86EMU_UNUSED(op1)) | |
3714 | { | |
3715 | START_OF_INSTR(); | |
3716 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3717 | DECODE_PRINTF("INC\tESP\n"); | |
3718 | } | |
3719 | else { | |
3720 | DECODE_PRINTF("INC\tSP\n"); | |
3721 | } | |
3722 | TRACE_AND_STEP(); | |
3723 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3724 | M.x86.R_ESP = inc_long(M.x86.R_ESP); | |
3725 | } | |
3726 | else { | |
3727 | M.x86.R_SP = inc_word(M.x86.R_SP); | |
3728 | } | |
3729 | DECODE_CLEAR_SEGOVR(); | |
3730 | END_OF_INSTR(); | |
3731 | } | |
3732 | ||
3733 | /**************************************************************************** | |
3734 | REMARKS: | |
3735 | Handles opcode 0x45 | |
3736 | ****************************************************************************/ | |
3737 | static void | |
3738 | x86emuOp_inc_BP(u8 X86EMU_UNUSED(op1)) | |
3739 | { | |
3740 | START_OF_INSTR(); | |
3741 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3742 | DECODE_PRINTF("INC\tEBP\n"); | |
3743 | } | |
3744 | else { | |
3745 | DECODE_PRINTF("INC\tBP\n"); | |
3746 | } | |
3747 | TRACE_AND_STEP(); | |
3748 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3749 | M.x86.R_EBP = inc_long(M.x86.R_EBP); | |
3750 | } | |
3751 | else { | |
3752 | M.x86.R_BP = inc_word(M.x86.R_BP); | |
3753 | } | |
3754 | DECODE_CLEAR_SEGOVR(); | |
3755 | END_OF_INSTR(); | |
3756 | } | |
3757 | ||
3758 | /**************************************************************************** | |
3759 | REMARKS: | |
3760 | Handles opcode 0x46 | |
3761 | ****************************************************************************/ | |
3762 | static void | |
3763 | x86emuOp_inc_SI(u8 X86EMU_UNUSED(op1)) | |
3764 | { | |
3765 | START_OF_INSTR(); | |
3766 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3767 | DECODE_PRINTF("INC\tESI\n"); | |
3768 | } | |
3769 | else { | |
3770 | DECODE_PRINTF("INC\tSI\n"); | |
3771 | } | |
3772 | TRACE_AND_STEP(); | |
3773 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3774 | M.x86.R_ESI = inc_long(M.x86.R_ESI); | |
3775 | } | |
3776 | else { | |
3777 | M.x86.R_SI = inc_word(M.x86.R_SI); | |
3778 | } | |
3779 | DECODE_CLEAR_SEGOVR(); | |
3780 | END_OF_INSTR(); | |
3781 | } | |
3782 | ||
3783 | /**************************************************************************** | |
3784 | REMARKS: | |
3785 | Handles opcode 0x47 | |
3786 | ****************************************************************************/ | |
3787 | static void | |
3788 | x86emuOp_inc_DI(u8 X86EMU_UNUSED(op1)) | |
3789 | { | |
3790 | START_OF_INSTR(); | |
3791 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3792 | DECODE_PRINTF("INC\tEDI\n"); | |
3793 | } | |
3794 | else { | |
3795 | DECODE_PRINTF("INC\tDI\n"); | |
3796 | } | |
3797 | TRACE_AND_STEP(); | |
3798 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3799 | M.x86.R_EDI = inc_long(M.x86.R_EDI); | |
3800 | } | |
3801 | else { | |
3802 | M.x86.R_DI = inc_word(M.x86.R_DI); | |
3803 | } | |
3804 | DECODE_CLEAR_SEGOVR(); | |
3805 | END_OF_INSTR(); | |
3806 | } | |
3807 | ||
3808 | /**************************************************************************** | |
3809 | REMARKS: | |
3810 | Handles opcode 0x48 | |
3811 | ****************************************************************************/ | |
3812 | static void | |
3813 | x86emuOp_dec_AX(u8 X86EMU_UNUSED(op1)) | |
3814 | { | |
3815 | START_OF_INSTR(); | |
3816 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3817 | DECODE_PRINTF("DEC\tEAX\n"); | |
3818 | } | |
3819 | else { | |
3820 | DECODE_PRINTF("DEC\tAX\n"); | |
3821 | } | |
3822 | TRACE_AND_STEP(); | |
3823 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3824 | M.x86.R_EAX = dec_long(M.x86.R_EAX); | |
3825 | } | |
3826 | else { | |
3827 | M.x86.R_AX = dec_word(M.x86.R_AX); | |
3828 | } | |
3829 | DECODE_CLEAR_SEGOVR(); | |
3830 | END_OF_INSTR(); | |
3831 | } | |
3832 | ||
3833 | /**************************************************************************** | |
3834 | REMARKS: | |
3835 | Handles opcode 0x49 | |
3836 | ****************************************************************************/ | |
3837 | static void | |
3838 | x86emuOp_dec_CX(u8 X86EMU_UNUSED(op1)) | |
3839 | { | |
3840 | START_OF_INSTR(); | |
3841 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3842 | DECODE_PRINTF("DEC\tECX\n"); | |
3843 | } | |
3844 | else { | |
3845 | DECODE_PRINTF("DEC\tCX\n"); | |
3846 | } | |
3847 | TRACE_AND_STEP(); | |
3848 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3849 | M.x86.R_ECX = dec_long(M.x86.R_ECX); | |
3850 | } | |
3851 | else { | |
3852 | M.x86.R_CX = dec_word(M.x86.R_CX); | |
3853 | } | |
3854 | DECODE_CLEAR_SEGOVR(); | |
3855 | END_OF_INSTR(); | |
3856 | } | |
3857 | ||
3858 | /**************************************************************************** | |
3859 | REMARKS: | |
3860 | Handles opcode 0x4a | |
3861 | ****************************************************************************/ | |
3862 | static void | |
3863 | x86emuOp_dec_DX(u8 X86EMU_UNUSED(op1)) | |
3864 | { | |
3865 | START_OF_INSTR(); | |
3866 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3867 | DECODE_PRINTF("DEC\tEDX\n"); | |
3868 | } | |
3869 | else { | |
3870 | DECODE_PRINTF("DEC\tDX\n"); | |
3871 | } | |
3872 | TRACE_AND_STEP(); | |
3873 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3874 | M.x86.R_EDX = dec_long(M.x86.R_EDX); | |
3875 | } | |
3876 | else { | |
3877 | M.x86.R_DX = dec_word(M.x86.R_DX); | |
3878 | } | |
3879 | DECODE_CLEAR_SEGOVR(); | |
3880 | END_OF_INSTR(); | |
3881 | } | |
3882 | ||
3883 | /**************************************************************************** | |
3884 | REMARKS: | |
3885 | Handles opcode 0x4b | |
3886 | ****************************************************************************/ | |
3887 | static void | |
3888 | x86emuOp_dec_BX(u8 X86EMU_UNUSED(op1)) | |
3889 | { | |
3890 | START_OF_INSTR(); | |
3891 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3892 | DECODE_PRINTF("DEC\tEBX\n"); | |
3893 | } | |
3894 | else { | |
3895 | DECODE_PRINTF("DEC\tBX\n"); | |
3896 | } | |
3897 | TRACE_AND_STEP(); | |
3898 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3899 | M.x86.R_EBX = dec_long(M.x86.R_EBX); | |
3900 | } | |
3901 | else { | |
3902 | M.x86.R_BX = dec_word(M.x86.R_BX); | |
3903 | } | |
3904 | DECODE_CLEAR_SEGOVR(); | |
3905 | END_OF_INSTR(); | |
3906 | } | |
3907 | ||
3908 | /**************************************************************************** | |
3909 | REMARKS: | |
3910 | Handles opcode 0x4c | |
3911 | ****************************************************************************/ | |
3912 | static void | |
3913 | x86emuOp_dec_SP(u8 X86EMU_UNUSED(op1)) | |
3914 | { | |
3915 | START_OF_INSTR(); | |
3916 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3917 | DECODE_PRINTF("DEC\tESP\n"); | |
3918 | } | |
3919 | else { | |
3920 | DECODE_PRINTF("DEC\tSP\n"); | |
3921 | } | |
3922 | TRACE_AND_STEP(); | |
3923 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3924 | M.x86.R_ESP = dec_long(M.x86.R_ESP); | |
3925 | } | |
3926 | else { | |
3927 | M.x86.R_SP = dec_word(M.x86.R_SP); | |
3928 | } | |
3929 | DECODE_CLEAR_SEGOVR(); | |
3930 | END_OF_INSTR(); | |
3931 | } | |
3932 | ||
3933 | /**************************************************************************** | |
3934 | REMARKS: | |
3935 | Handles opcode 0x4d | |
3936 | ****************************************************************************/ | |
3937 | static void | |
3938 | x86emuOp_dec_BP(u8 X86EMU_UNUSED(op1)) | |
3939 | { | |
3940 | START_OF_INSTR(); | |
3941 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3942 | DECODE_PRINTF("DEC\tEBP\n"); | |
3943 | } | |
3944 | else { | |
3945 | DECODE_PRINTF("DEC\tBP\n"); | |
3946 | } | |
3947 | TRACE_AND_STEP(); | |
3948 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3949 | M.x86.R_EBP = dec_long(M.x86.R_EBP); | |
3950 | } | |
3951 | else { | |
3952 | M.x86.R_BP = dec_word(M.x86.R_BP); | |
3953 | } | |
3954 | DECODE_CLEAR_SEGOVR(); | |
3955 | END_OF_INSTR(); | |
3956 | } | |
3957 | ||
3958 | /**************************************************************************** | |
3959 | REMARKS: | |
3960 | Handles opcode 0x4e | |
3961 | ****************************************************************************/ | |
3962 | static void | |
3963 | x86emuOp_dec_SI(u8 X86EMU_UNUSED(op1)) | |
3964 | { | |
3965 | START_OF_INSTR(); | |
3966 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3967 | DECODE_PRINTF("DEC\tESI\n"); | |
3968 | } | |
3969 | else { | |
3970 | DECODE_PRINTF("DEC\tSI\n"); | |
3971 | } | |
3972 | TRACE_AND_STEP(); | |
3973 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3974 | M.x86.R_ESI = dec_long(M.x86.R_ESI); | |
3975 | } | |
3976 | else { | |
3977 | M.x86.R_SI = dec_word(M.x86.R_SI); | |
3978 | } | |
3979 | DECODE_CLEAR_SEGOVR(); | |
3980 | END_OF_INSTR(); | |
3981 | } | |
3982 | ||
3983 | /**************************************************************************** | |
3984 | REMARKS: | |
3985 | Handles opcode 0x4f | |
3986 | ****************************************************************************/ | |
3987 | static void | |
3988 | x86emuOp_dec_DI(u8 X86EMU_UNUSED(op1)) | |
3989 | { | |
3990 | START_OF_INSTR(); | |
3991 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3992 | DECODE_PRINTF("DEC\tEDI\n"); | |
3993 | } | |
3994 | else { | |
3995 | DECODE_PRINTF("DEC\tDI\n"); | |
3996 | } | |
3997 | TRACE_AND_STEP(); | |
3998 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3999 | M.x86.R_EDI = dec_long(M.x86.R_EDI); | |
4000 | } | |
4001 | else { | |
4002 | M.x86.R_DI = dec_word(M.x86.R_DI); | |
4003 | } | |
4004 | DECODE_CLEAR_SEGOVR(); | |
4005 | END_OF_INSTR(); | |
4006 | } | |
4007 | ||
4008 | /**************************************************************************** | |
4009 | REMARKS: | |
4010 | Handles opcode 0x50 | |
4011 | ****************************************************************************/ | |
4012 | static void | |
4013 | x86emuOp_push_AX(u8 X86EMU_UNUSED(op1)) | |
4014 | { | |
4015 | START_OF_INSTR(); | |
4016 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
4017 | DECODE_PRINTF("PUSH\tEAX\n"); | |
4018 | } | |
4019 | else { | |
4020 | DECODE_PRINTF("PUSH\tAX\n"); | |
4021 | } | |
4022 | TRACE_AND_STEP(); | |
4023 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
4024 | push_long(M.x86.R_EAX); | |
4025 | } | |
4026 | else { | |
4027 | push_word(M.x86.R_AX); | |
4028 | } | |
4029 | DECODE_CLEAR_SEGOVR(); | |
4030 | END_OF_INSTR(); | |
4031 | } | |
4032 | ||
4033 | /**************************************************************************** | |
4034 | REMARKS: | |
4035 | Handles opcode 0x51 | |
4036 | ****************************************************************************/ | |
4037 | static void | |
4038 | x86emuOp_push_CX(u8 X86EMU_UNUSED(op1)) | |
4039 | { | |
4040 | START_OF_INSTR(); | |
4041 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
4042 | DECODE_PRINTF("PUSH\tECX\n"); | |
4043 | } | |
4044 | else { | |
4045 | DECODE_PRINTF("PUSH\tCX\n"); | |
4046 | } | |
4047 | TRACE_AND_STEP(); | |
4048 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
4049 | push_long(M.x86.R_ECX); | |
4050 | } | |
4051 | else { | |
4052 | push_word(M.x86.R_CX); | |
4053 | } | |
4054 | DECODE_CLEAR_SEGOVR(); | |
4055 | END_OF_INSTR(); | |
4056 | } | |
4057 | ||
4058 | /**************************************************************************** | |
4059 | REMARKS: | |
4060 | Handles opcode 0x52 | |
4061 | ****************************************************************************/ | |
4062 | static void | |
4063 | x86emuOp_push_DX(u8 X86EMU_UNUSED(op1)) | |
4064 | { | |
4065 | START_OF_INSTR(); | |
4066 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
4067 | DECODE_PRINTF("PUSH\tEDX\n"); | |
4068 | } | |
4069 | else { | |
4070 | DECODE_PRINTF("PUSH\tDX\n"); | |
4071 | } | |
4072 | TRACE_AND_STEP(); | |
4073 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
4074 | push_long(M.x86.R_EDX); | |
4075 | } | |
4076 | else { | |
4077 | push_word(M.x86.R_DX); | |
4078 | } | |
4079 | DECODE_CLEAR_SEGOVR(); | |
4080 | END_OF_INSTR(); | |
4081 | } | |
4082 | ||
4083 | /**************************************************************************** | |
4084 | REMARKS: | |
4085 | Handles opcode 0x53 | |
4086 | ****************************************************************************/ | |
4087 | static void | |
4088 | x86emuOp_push_BX(u8 X86EMU_UNUSED(op1)) | |
4089 | { | |
4090 | START_OF_INSTR(); | |
4091 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
4092 | DECODE_PRINTF("PUSH\tEBX\n"); | |
4093 | } | |
4094 | else { | |
4095 | DECODE_PRINTF("PUSH\tBX\n"); | |
4096 | } | |
4097 | TRACE_AND_STEP(); | |
4098 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
4099 | push_long(M.x86.R_EBX); | |
4100 | } | |
4101 | else { | |
4102 | push_word(M.x86.R_BX); | |
4103 | } | |
4104 | DECODE_CLEAR_SEGOVR(); | |
4105 | END_OF_INSTR(); | |
4106 | } | |
4107 | ||
4108 | /**************************************************************************** | |
4109 | REMARKS: | |
4110 | Handles opcode 0x54 | |
4111 | ****************************************************************************/ | |
4112 | static void | |
4113 | x86emuOp_push_SP(u8 X86EMU_UNUSED(op1)) | |
4114 | { | |
4115 | START_OF_INSTR(); | |
4116 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
4117 | DECODE_PRINTF("PUSH\tESP\n"); | |
4118 | } | |
4119 | else { | |
4120 | DECODE_PRINTF("PUSH\tSP\n"); | |
4121 | } | |
4122 | TRACE_AND_STEP(); | |
4123 | /* Always push (E)SP, since we are emulating an i386 and above | |
4124 | * processor. This is necessary as some BIOS'es use this to check | |
4125 | * what type of processor is in the system. | |
4126 | */ | |
4127 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
4128 | push_long(M.x86.R_ESP); | |
4129 | } | |
4130 | else { | |
4131 | push_word((u16) (M.x86.R_SP)); | |
4132 | } | |
4133 | DECODE_CLEAR_SEGOVR(); | |
4134 | END_OF_INSTR(); | |
4135 | } | |
4136 | ||
4137 | /**************************************************************************** | |
4138 | REMARKS: | |
4139 | Handles opcode 0x55 | |
4140 | ****************************************************************************/ | |
4141 | static void | |
4142 | x86emuOp_push_BP(u8 X86EMU_UNUSED(op1)) | |
4143 | { | |
4144 | START_OF_INSTR(); | |
4145 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
4146 | DECODE_PRINTF("PUSH\tEBP\n"); | |
4147 | } | |
4148 | else { | |
4149 | DECODE_PRINTF("PUSH\tBP\n"); | |
4150 | } | |
4151 | TRACE_AND_STEP(); | |
4152 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
4153 | push_long(M.x86.R_EBP); | |
4154 | } | |
4155 | else { | |
4156 | push_word(M.x86.R_BP); | |
4157 | } | |
4158 | DECODE_CLEAR_SEGOVR(); | |
4159 | END_OF_INSTR(); | |
4160 | } | |
4161 | ||
4162 | /**************************************************************************** | |
4163 | REMARKS: | |
4164 | Handles opcode 0x56 | |
4165 | ****************************************************************************/ | |
4166 | static void | |
4167 | x86emuOp_push_SI(u8 X86EMU_UNUSED(op1)) | |
4168 | { | |
4169 | START_OF_INSTR(); | |
4170 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
4171 | DECODE_PRINTF("PUSH\tESI\n"); | |
4172 | } | |
4173 | else { | |
4174 | DECODE_PRINTF("PUSH\tSI\n"); | |
4175 | } | |
4176 | TRACE_AND_STEP(); | |
4177 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
4178 | push_long(M.x86.R_ESI); | |
4179 | } | |
4180 | else { | |
4181 | push_word(M.x86.R_SI); | |
4182 | } | |
4183 | DECODE_CLEAR_SEGOVR(); | |
4184 | END_OF_INSTR(); | |
4185 | } | |
4186 | ||
4187 | /**************************************************************************** | |
4188 | REMARKS: | |
4189 | Handles opcode 0x57 | |
4190 | ****************************************************************************/ | |
4191 | static void | |
4192 | x86emuOp_push_DI(u8 X86EMU_UNUSED(op1)) | |
4193 | { | |
4194 | START_OF_INSTR(); | |
4195 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
4196 | DECODE_PRINTF("PUSH\tEDI\n"); | |
4197 | } | |
4198 | else { | |
4199 | DECODE_PRINTF("PUSH\tDI\n"); | |
4200 | } | |
4201 | TRACE_AND_STEP(); | |
4202 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
4203 | push_long(M.x86.R_EDI); | |
4204 | } | |
4205 | else { | |
4206 | push_word(M.x86.R_DI); | |
4207 | } | |
4208 | DECODE_CLEAR_SEGOVR(); | |
4209 | END_OF_INSTR(); | |
4210 | } | |
4211 | ||
4212 | /**************************************************************************** | |
4213 | REMARKS: | |
4214 | Handles opcode 0x58 | |
4215 | ****************************************************************************/ | |
4216 | static void | |
4217 | x86emuOp_pop_AX(u8 X86EMU_UNUSED(op1)) | |
4218 | { | |
4219 | START_OF_INSTR(); | |
4220 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
4221 | DECODE_PRINTF("POP\tEAX\n"); | |
4222 | } | |
4223 | else { | |
4224 | DECODE_PRINTF("POP\tAX\n"); | |
4225 | } | |
4226 | TRACE_AND_STEP(); | |
4227 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
4228 | M.x86.R_EAX = pop_long(); | |
4229 | } | |
4230 | else { | |
4231 | M.x86.R_AX = pop_word(); | |
4232 | } | |
4233 | DECODE_CLEAR_SEGOVR(); | |
4234 | END_OF_INSTR(); | |
4235 | } | |
4236 | ||
4237 | /**************************************************************************** | |
4238 | REMARKS: | |
4239 | Handles opcode 0x59 | |
4240 | ****************************************************************************/ | |
4241 | static void | |
4242 | x86emuOp_pop_CX(u8 X86EMU_UNUSED(op1)) | |
4243 | { | |
4244 | START_OF_INSTR(); | |
4245 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
4246 | DECODE_PRINTF("POP\tECX\n"); | |
4247 | } | |
4248 | else { | |
4249 | DECODE_PRINTF("POP\tCX\n"); | |
4250 | } | |
4251 | TRACE_AND_STEP(); | |
4252 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
4253 | M.x86.R_ECX = pop_long(); | |
4254 | } | |
4255 | else { | |
4256 | M.x86.R_CX = pop_word(); | |
4257 | } | |
4258 | DECODE_CLEAR_SEGOVR(); | |
4259 | END_OF_INSTR(); | |
4260 | } | |
4261 | ||
4262 | /**************************************************************************** | |
4263 | REMARKS: | |
4264 | Handles opcode 0x5a | |
4265 | ****************************************************************************/ | |
4266 | static void | |
4267 | x86emuOp_pop_DX(u8 X86EMU_UNUSED(op1)) | |
4268 | { | |
4269 | START_OF_INSTR(); | |
4270 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
4271 | DECODE_PRINTF("POP\tEDX\n"); | |
4272 | } | |
4273 | else { | |
4274 | DECODE_PRINTF("POP\tDX\n"); | |
4275 | } | |
4276 | TRACE_AND_STEP(); | |
4277 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
4278 | M.x86.R_EDX = pop_long(); | |
4279 | } | |
4280 | else { | |
4281 | M.x86.R_DX = pop_word(); | |
4282 | } | |
4283 | DECODE_CLEAR_SEGOVR(); | |
4284 | END_OF_INSTR(); | |
4285 | } | |
4286 | ||
4287 | /**************************************************************************** | |
4288 | REMARKS: | |
4289 | Handles opcode 0x5b | |
4290 | ****************************************************************************/ | |
4291 | static void | |
4292 | x86emuOp_pop_BX(u8 X86EMU_UNUSED(op1)) | |
4293 | { | |
4294 | START_OF_INSTR(); | |
4295 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
4296 | DECODE_PRINTF("POP\tEBX\n"); | |
4297 | } | |
4298 | else { | |
4299 | DECODE_PRINTF("POP\tBX\n"); | |
4300 | } | |
4301 | TRACE_AND_STEP(); | |
4302 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
4303 | M.x86.R_EBX = pop_long(); | |
4304 | } | |
4305 | else { | |
4306 | M.x86.R_BX = pop_word(); | |
4307 | } | |
4308 | DECODE_CLEAR_SEGOVR(); | |
4309 | END_OF_INSTR(); | |
4310 | } | |
4311 | ||
4312 | /**************************************************************************** | |
4313 | REMARKS: | |
4314 | Handles opcode 0x5c | |
4315 | ****************************************************************************/ | |
4316 | static void | |
4317 | x86emuOp_pop_SP(u8 X86EMU_UNUSED(op1)) | |
4318 | { | |
4319 | START_OF_INSTR(); | |
4320 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
4321 | DECODE_PRINTF("POP\tESP\n"); | |
4322 | } | |
4323 | else { | |
4324 | DECODE_PRINTF("POP\tSP\n"); | |
4325 | } | |
4326 | TRACE_AND_STEP(); | |
4327 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
4328 | M.x86.R_ESP = pop_long(); | |
4329 | } | |
4330 | else { | |
4331 | M.x86.R_SP = pop_word(); | |
4332 | } | |
4333 | DECODE_CLEAR_SEGOVR(); | |
4334 | END_OF_INSTR(); | |
4335 | } | |
4336 | ||
4337 | /**************************************************************************** | |
4338 | REMARKS: | |
4339 | Handles opcode 0x5d | |
4340 | ****************************************************************************/ | |
4341 | static void | |
4342 | x86emuOp_pop_BP(u8 X86EMU_UNUSED(op1)) | |
4343 | { | |
4344 | START_OF_INSTR(); | |
4345 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
4346 | DECODE_PRINTF("POP\tEBP\n"); | |
4347 | } | |
4348 | else { | |
4349 | DECODE_PRINTF("POP\tBP\n"); | |
4350 | } | |
4351 | TRACE_AND_STEP(); | |
4352 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
4353 | M.x86.R_EBP = pop_long(); | |
4354 | } | |
4355 | else { | |
4356 | M.x86.R_BP = pop_word(); | |
4357 | } | |
4358 | DECODE_CLEAR_SEGOVR(); | |
4359 | END_OF_INSTR(); | |
4360 | } | |
4361 | ||
4362 | /**************************************************************************** | |
4363 | REMARKS: | |
4364 | Handles opcode 0x5e | |
4365 | ****************************************************************************/ | |
4366 | static void | |
4367 | x86emuOp_pop_SI(u8 X86EMU_UNUSED(op1)) | |
4368 | { | |
4369 | START_OF_INSTR(); | |
4370 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
4371 | DECODE_PRINTF("POP\tESI\n"); | |
4372 | } | |
4373 | else { | |
4374 | DECODE_PRINTF("POP\tSI\n"); | |
4375 | } | |
4376 | TRACE_AND_STEP(); | |
4377 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
4378 | M.x86.R_ESI = pop_long(); | |
4379 | } | |
4380 | else { | |
4381 | M.x86.R_SI = pop_word(); | |
4382 | } | |
4383 | DECODE_CLEAR_SEGOVR(); | |
4384 | END_OF_INSTR(); | |
4385 | } | |
4386 | ||
4387 | /**************************************************************************** | |
4388 | REMARKS: | |
4389 | Handles opcode 0x5f | |
4390 | ****************************************************************************/ | |
4391 | static void | |
4392 | x86emuOp_pop_DI(u8 X86EMU_UNUSED(op1)) | |
4393 | { | |
4394 | START_OF_INSTR(); | |
4395 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
4396 | DECODE_PRINTF("POP\tEDI\n"); | |
4397 | } | |
4398 | else { | |
4399 | DECODE_PRINTF("POP\tDI\n"); | |
4400 | } | |
4401 | TRACE_AND_STEP(); | |
4402 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
4403 | M.x86.R_EDI = pop_long(); | |
4404 | } | |
4405 | else { | |
4406 | M.x86.R_DI = pop_word(); | |
4407 | } | |
4408 | DECODE_CLEAR_SEGOVR(); | |
4409 | END_OF_INSTR(); | |
4410 | } | |
4411 | ||
4412 | /**************************************************************************** | |
4413 | REMARKS: | |
4414 | Handles opcode 0x60 | |
4415 | ****************************************************************************/ | |
4416 | static void | |
4417 | x86emuOp_push_all(u8 X86EMU_UNUSED(op1)) | |
4418 | { | |
4419 | START_OF_INSTR(); | |
4420 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
4421 | DECODE_PRINTF("PUSHAD\n"); | |
4422 | } | |
4423 | else { | |
4424 | DECODE_PRINTF("PUSHA\n"); | |
4425 | } | |
4426 | TRACE_AND_STEP(); | |
4427 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
4428 | u32 old_sp = M.x86.R_ESP; | |
4429 | ||
4430 | push_long(M.x86.R_EAX); | |
4431 | push_long(M.x86.R_ECX); | |
4432 | push_long(M.x86.R_EDX); | |
4433 | push_long(M.x86.R_EBX); | |
4434 | push_long(old_sp); | |
4435 | push_long(M.x86.R_EBP); | |
4436 | push_long(M.x86.R_ESI); | |
4437 | push_long(M.x86.R_EDI); | |
4438 | } | |
4439 | else { | |
4440 | u16 old_sp = M.x86.R_SP; | |
4441 | ||
4442 | push_word(M.x86.R_AX); | |
4443 | push_word(M.x86.R_CX); | |
4444 | push_word(M.x86.R_DX); | |
4445 | push_word(M.x86.R_BX); | |
4446 | push_word(old_sp); | |
4447 | push_word(M.x86.R_BP); | |
4448 | push_word(M.x86.R_SI); | |
4449 | push_word(M.x86.R_DI); | |
4450 | } | |
4451 | DECODE_CLEAR_SEGOVR(); | |
4452 | END_OF_INSTR(); | |
4453 | } | |
4454 | ||
4455 | /**************************************************************************** | |
4456 | REMARKS: | |
4457 | Handles opcode 0x61 | |
4458 | ****************************************************************************/ | |
4459 | static void | |
4460 | x86emuOp_pop_all(u8 X86EMU_UNUSED(op1)) | |
4461 | { | |
4462 | START_OF_INSTR(); | |
4463 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
4464 | DECODE_PRINTF("POPAD\n"); | |
4465 | } | |
4466 | else { | |
4467 | DECODE_PRINTF("POPA\n"); | |
4468 | } | |
4469 | TRACE_AND_STEP(); | |
4470 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
4471 | M.x86.R_EDI = pop_long(); | |
4472 | M.x86.R_ESI = pop_long(); | |
4473 | M.x86.R_EBP = pop_long(); | |
4474 | M.x86.R_ESP += 4; /* skip ESP */ | |
4475 | M.x86.R_EBX = pop_long(); | |
4476 | M.x86.R_EDX = pop_long(); | |
4477 | M.x86.R_ECX = pop_long(); | |
4478 | M.x86.R_EAX = pop_long(); | |
4479 | } | |
4480 | else { | |
4481 | M.x86.R_DI = pop_word(); | |
4482 | M.x86.R_SI = pop_word(); | |
4483 | M.x86.R_BP = pop_word(); | |
4484 | M.x86.R_SP += 2; /* skip SP */ | |
4485 | M.x86.R_BX = pop_word(); | |
4486 | M.x86.R_DX = pop_word(); | |
4487 | M.x86.R_CX = pop_word(); | |
4488 | M.x86.R_AX = pop_word(); | |
4489 | } | |
4490 | DECODE_CLEAR_SEGOVR(); | |
4491 | END_OF_INSTR(); | |
4492 | } | |
4493 | ||
4494 | /*opcode 0x62 ILLEGAL OP, calls x86emuOp_illegal_op() */ | |
4495 | /*opcode 0x63 ILLEGAL OP, calls x86emuOp_illegal_op() */ | |
4496 | ||
4497 | /**************************************************************************** | |
4498 | REMARKS: | |
4499 | Handles opcode 0x64 | |
4500 | ****************************************************************************/ | |
4501 | static void | |
4502 | x86emuOp_segovr_FS(u8 X86EMU_UNUSED(op1)) | |
4503 | { | |
4504 | START_OF_INSTR(); | |
4505 | DECODE_PRINTF("FS:\n"); | |
4506 | TRACE_AND_STEP(); | |
4507 | M.x86.mode |= SYSMODE_SEGOVR_FS; | |
4508 | /* | |
4509 | * note the lack of DECODE_CLEAR_SEGOVR(r) since, here is one of 4 | |
4510 | * opcode subroutines we do not want to do this. | |
4511 | */ | |
4512 | END_OF_INSTR(); | |
4513 | } | |
4514 | ||
4515 | /**************************************************************************** | |
4516 | REMARKS: | |
4517 | Handles opcode 0x65 | |
4518 | ****************************************************************************/ | |
4519 | static void | |
4520 | x86emuOp_segovr_GS(u8 X86EMU_UNUSED(op1)) | |
4521 | { | |
4522 | START_OF_INSTR(); | |
4523 | DECODE_PRINTF("GS:\n"); | |
4524 | TRACE_AND_STEP(); | |
4525 | M.x86.mode |= SYSMODE_SEGOVR_GS; | |
4526 | /* | |
4527 | * note the lack of DECODE_CLEAR_SEGOVR(r) since, here is one of 4 | |
4528 | * opcode subroutines we do not want to do this. | |
4529 | */ | |
4530 | END_OF_INSTR(); | |
4531 | } | |
4532 | ||
4533 | /**************************************************************************** | |
4534 | REMARKS: | |
4535 | Handles opcode 0x66 - prefix for 32-bit register | |
4536 | ****************************************************************************/ | |
4537 | static void | |
4538 | x86emuOp_prefix_data(u8 X86EMU_UNUSED(op1)) | |
4539 | { | |
4540 | START_OF_INSTR(); | |
4541 | DECODE_PRINTF("DATA:\n"); | |
4542 | TRACE_AND_STEP(); | |
4543 | M.x86.mode |= SYSMODE_PREFIX_DATA; | |
4544 | /* note no DECODE_CLEAR_SEGOVR here. */ | |
4545 | END_OF_INSTR(); | |
4546 | } | |
4547 | ||
4548 | /**************************************************************************** | |
4549 | REMARKS: | |
4550 | Handles opcode 0x67 - prefix for 32-bit address | |
4551 | ****************************************************************************/ | |
4552 | static void | |
4553 | x86emuOp_prefix_addr(u8 X86EMU_UNUSED(op1)) | |
4554 | { | |
4555 | START_OF_INSTR(); | |
4556 | DECODE_PRINTF("ADDR:\n"); | |
4557 | TRACE_AND_STEP(); | |
4558 | M.x86.mode |= SYSMODE_PREFIX_ADDR; | |
4559 | /* note no DECODE_CLEAR_SEGOVR here. */ | |
4560 | END_OF_INSTR(); | |
4561 | } | |
4562 | ||
4563 | /**************************************************************************** | |
4564 | REMARKS: | |
4565 | Handles opcode 0x68 | |
4566 | ****************************************************************************/ | |
4567 | static void | |
4568 | x86emuOp_push_word_IMM(u8 X86EMU_UNUSED(op1)) | |
4569 | { | |
4570 | u32 imm; | |
4571 | ||
4572 | START_OF_INSTR(); | |
4573 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
4574 | imm = fetch_long_imm(); | |
4575 | } | |
4576 | else { | |
4577 | imm = fetch_word_imm(); | |
4578 | } | |
4579 | DECODE_PRINTF2("PUSH\t%x\n", imm); | |
4580 | TRACE_AND_STEP(); | |
4581 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
4582 | push_long(imm); | |
4583 | } | |
4584 | else { | |
4585 | push_word((u16) imm); | |
4586 | } | |
4587 | DECODE_CLEAR_SEGOVR(); | |
4588 | END_OF_INSTR(); | |
4589 | } | |
4590 | ||
4591 | /**************************************************************************** | |
4592 | REMARKS: | |
4593 | Handles opcode 0x69 | |
4594 | ****************************************************************************/ | |
4595 | static void | |
4596 | x86emuOp_imul_word_IMM(u8 X86EMU_UNUSED(op1)) | |
4597 | { | |
4598 | int mod, rl, rh; | |
4599 | uint srcoffset; | |
4600 | ||
4601 | START_OF_INSTR(); | |
4602 | DECODE_PRINTF("IMUL\t"); | |
4603 | FETCH_DECODE_MODRM(mod, rh, rl); | |
4604 | switch (mod) { | |
4605 | case 0: | |
4606 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
4607 | u32 *destreg; | |
4608 | u32 srcval; | |
4609 | u32 res_lo, res_hi; | |
4610 | s32 imm; | |
4611 | ||
4612 | destreg = DECODE_RM_LONG_REGISTER(rh); | |
4613 | DECODE_PRINTF(","); | |
4614 | srcoffset = decode_rm00_address(rl); | |
4615 | srcval = fetch_data_long(srcoffset); | |
4616 | imm = fetch_long_imm(); | |
4617 | DECODE_PRINTF2(",%d\n", (s32) imm); | |
4618 | TRACE_AND_STEP(); | |
4619 | imul_long_direct(&res_lo, &res_hi, (s32) srcval, (s32) imm); | |
4620 | if (res_hi != 0) { | |
4621 | SET_FLAG(F_CF); | |
4622 | SET_FLAG(F_OF); | |
4623 | } | |
4624 | else { | |
4625 | CLEAR_FLAG(F_CF); | |
4626 | CLEAR_FLAG(F_OF); | |
4627 | } | |
4628 | *destreg = (u32) res_lo; | |
4629 | } | |
4630 | else { | |
4631 | u16 *destreg; | |
4632 | u16 srcval; | |
4633 | u32 res; | |
4634 | s16 imm; | |
4635 | ||
4636 | destreg = DECODE_RM_WORD_REGISTER(rh); | |
4637 | DECODE_PRINTF(","); | |
4638 | srcoffset = decode_rm00_address(rl); | |
4639 | srcval = fetch_data_word(srcoffset); | |
4640 | imm = fetch_word_imm(); | |
4641 | DECODE_PRINTF2(",%d\n", (s32) imm); | |
4642 | TRACE_AND_STEP(); | |
4643 | res = (s16) srcval *(s16) imm; | |
4644 | ||
4645 | if (res > 0xFFFF) { | |
4646 | SET_FLAG(F_CF); | |
4647 | SET_FLAG(F_OF); | |
4648 | } | |
4649 | else { | |
4650 | CLEAR_FLAG(F_CF); | |
4651 | CLEAR_FLAG(F_OF); | |
4652 | } | |
4653 | *destreg = (u16) res; | |
4654 | } | |
4655 | break; | |
4656 | case 1: | |
4657 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
4658 | u32 *destreg; | |
4659 | u32 srcval; | |
4660 | u32 res_lo, res_hi; | |
4661 | s32 imm; | |
4662 | ||
4663 | destreg = DECODE_RM_LONG_REGISTER(rh); | |
4664 | DECODE_PRINTF(","); | |
4665 | srcoffset = decode_rm01_address(rl); | |
4666 | srcval = fetch_data_long(srcoffset); | |
4667 | imm = fetch_long_imm(); | |
4668 | DECODE_PRINTF2(",%d\n", (s32) imm); | |
4669 | TRACE_AND_STEP(); | |
4670 | imul_long_direct(&res_lo, &res_hi, (s32) srcval, (s32) imm); | |
4671 | if (res_hi != 0) { | |
4672 | SET_FLAG(F_CF); | |
4673 | SET_FLAG(F_OF); | |
4674 | } | |
4675 | else { | |
4676 | CLEAR_FLAG(F_CF); | |
4677 | CLEAR_FLAG(F_OF); | |
4678 | } | |
4679 | *destreg = (u32) res_lo; | |
4680 | } | |
4681 | else { | |
4682 | u16 *destreg; | |
4683 | u16 srcval; | |
4684 | u32 res; | |
4685 | s16 imm; | |
4686 | ||
4687 | destreg = DECODE_RM_WORD_REGISTER(rh); | |
4688 | DECODE_PRINTF(","); | |
4689 | srcoffset = decode_rm01_address(rl); | |
4690 | srcval = fetch_data_word(srcoffset); | |
4691 | imm = fetch_word_imm(); | |
4692 | DECODE_PRINTF2(",%d\n", (s32) imm); | |
4693 | TRACE_AND_STEP(); | |
4694 | res = (s16) srcval *(s16) imm; | |
4695 | ||
4696 | if (res > 0xFFFF) { | |
4697 | SET_FLAG(F_CF); | |
4698 | SET_FLAG(F_OF); | |
4699 | } | |
4700 | else { | |
4701 | CLEAR_FLAG(F_CF); | |
4702 | CLEAR_FLAG(F_OF); | |
4703 | } | |
4704 | *destreg = (u16) res; | |
4705 | } | |
4706 | break; | |
4707 | case 2: | |
4708 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
4709 | u32 *destreg; | |
4710 | u32 srcval; | |
4711 | u32 res_lo, res_hi; | |
4712 | s32 imm; | |
4713 | ||
4714 | destreg = DECODE_RM_LONG_REGISTER(rh); | |
4715 | DECODE_PRINTF(","); | |
4716 | srcoffset = decode_rm10_address(rl); | |
4717 | srcval = fetch_data_long(srcoffset); | |
4718 | imm = fetch_long_imm(); | |
4719 | DECODE_PRINTF2(",%d\n", (s32) imm); | |
4720 | TRACE_AND_STEP(); | |
4721 | imul_long_direct(&res_lo, &res_hi, (s32) srcval, (s32) imm); | |
4722 | if (res_hi != 0) { | |
4723 | SET_FLAG(F_CF); | |
4724 | SET_FLAG(F_OF); | |
4725 | } | |
4726 | else { | |
4727 | CLEAR_FLAG(F_CF); | |
4728 | CLEAR_FLAG(F_OF); | |
4729 | } | |
4730 | *destreg = (u32) res_lo; | |
4731 | } | |
4732 | else { | |
4733 | u16 *destreg; | |
4734 | u16 srcval; | |
4735 | u32 res; | |
4736 | s16 imm; | |
4737 | ||
4738 | destreg = DECODE_RM_WORD_REGISTER(rh); | |
4739 | DECODE_PRINTF(","); | |
4740 | srcoffset = decode_rm10_address(rl); | |
4741 | srcval = fetch_data_word(srcoffset); | |
4742 | imm = fetch_word_imm(); | |
4743 | DECODE_PRINTF2(",%d\n", (s32) imm); | |
4744 | TRACE_AND_STEP(); | |
4745 | res = (s16) srcval *(s16) imm; | |
4746 | ||
4747 | if (res > 0xFFFF) { | |
4748 | SET_FLAG(F_CF); | |
4749 | SET_FLAG(F_OF); | |
4750 | } | |
4751 | else { | |
4752 | CLEAR_FLAG(F_CF); | |
4753 | CLEAR_FLAG(F_OF); | |
4754 | } | |
4755 | *destreg = (u16) res; | |
4756 | } | |
4757 | break; | |
4758 | case 3: /* register to register */ | |
4759 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
4760 | u32 *destreg, *srcreg; | |
4761 | u32 res_lo, res_hi; | |
4762 | s32 imm; | |
4763 | ||
4764 | destreg = DECODE_RM_LONG_REGISTER(rh); | |
4765 | DECODE_PRINTF(","); | |
4766 | srcreg = DECODE_RM_LONG_REGISTER(rl); | |
4767 | imm = fetch_long_imm(); | |
4768 | DECODE_PRINTF2(",%d\n", (s32) imm); | |
4769 | TRACE_AND_STEP(); | |
4770 | imul_long_direct(&res_lo, &res_hi, (s32) * srcreg, (s32) imm); | |
4771 | if (res_hi != 0) { | |
4772 | SET_FLAG(F_CF); | |
4773 | SET_FLAG(F_OF); | |
4774 | } | |
4775 | else { | |
4776 | CLEAR_FLAG(F_CF); | |
4777 | CLEAR_FLAG(F_OF); | |
4778 | } | |
4779 | *destreg = (u32) res_lo; | |
4780 | } | |
4781 | else { | |
4782 | u16 *destreg, *srcreg; | |
4783 | u32 res; | |
4784 | s16 imm; | |
4785 | ||
4786 | destreg = DECODE_RM_WORD_REGISTER(rh); | |
4787 | DECODE_PRINTF(","); | |
4788 | srcreg = DECODE_RM_WORD_REGISTER(rl); | |
4789 | imm = fetch_word_imm(); | |
4790 | DECODE_PRINTF2(",%d\n", (s32) imm); | |
4791 | res = (s16) * srcreg * (s16) imm; | |
4792 | if (res > 0xFFFF) { | |
4793 | SET_FLAG(F_CF); | |
4794 | SET_FLAG(F_OF); | |
4795 | } | |
4796 | else { | |
4797 | CLEAR_FLAG(F_CF); | |
4798 | CLEAR_FLAG(F_OF); | |
4799 | } | |
4800 | *destreg = (u16) res; | |
4801 | } | |
4802 | break; | |
4803 | } | |
4804 | DECODE_CLEAR_SEGOVR(); | |
4805 | END_OF_INSTR(); | |
4806 | } | |
4807 | ||
4808 | /**************************************************************************** | |
4809 | REMARKS: | |
4810 | Handles opcode 0x6a | |
4811 | ****************************************************************************/ | |
4812 | static void | |
4813 | x86emuOp_push_byte_IMM(u8 X86EMU_UNUSED(op1)) | |
4814 | { | |
4815 | s16 imm; | |
4816 | ||
4817 | START_OF_INSTR(); | |
4818 | imm = (s8) fetch_byte_imm(); | |
4819 | DECODE_PRINTF2("PUSH\t%d\n", imm); | |
4820 | TRACE_AND_STEP(); | |
4821 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
4822 | push_long((s32) imm); | |
4823 | } | |
4824 | else { | |
4825 | push_word(imm); | |
4826 | } | |
4827 | DECODE_CLEAR_SEGOVR(); | |
4828 | END_OF_INSTR(); | |
4829 | } | |
4830 | ||
4831 | /**************************************************************************** | |
4832 | REMARKS: | |
4833 | Handles opcode 0x6b | |
4834 | ****************************************************************************/ | |
4835 | static void | |
4836 | x86emuOp_imul_byte_IMM(u8 X86EMU_UNUSED(op1)) | |
4837 | { | |
4838 | int mod, rl, rh; | |
4839 | uint srcoffset; | |
4840 | s8 imm; | |
4841 | ||
4842 | START_OF_INSTR(); | |
4843 | DECODE_PRINTF("IMUL\t"); | |
4844 | FETCH_DECODE_MODRM(mod, rh, rl); | |
4845 | switch (mod) { | |
4846 | case 0: | |
4847 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
4848 | u32 *destreg; | |
4849 | u32 srcval; | |
4850 | u32 res_lo, res_hi; | |
4851 | ||
4852 | destreg = DECODE_RM_LONG_REGISTER(rh); | |
4853 | DECODE_PRINTF(","); | |
4854 | srcoffset = decode_rm00_address(rl); | |
4855 | srcval = fetch_data_long(srcoffset); | |
4856 | imm = fetch_byte_imm(); | |
4857 | DECODE_PRINTF2(",%d\n", (s32) imm); | |
4858 | TRACE_AND_STEP(); | |
4859 | imul_long_direct(&res_lo, &res_hi, (s32) srcval, (s32) imm); | |
4860 | if (res_hi != 0) { | |
4861 | SET_FLAG(F_CF); | |
4862 | SET_FLAG(F_OF); | |
4863 | } | |
4864 | else { | |
4865 | CLEAR_FLAG(F_CF); | |
4866 | CLEAR_FLAG(F_OF); | |
4867 | } | |
4868 | *destreg = (u32) res_lo; | |
4869 | } | |
4870 | else { | |
4871 | u16 *destreg; | |
4872 | u16 srcval; | |
4873 | u32 res; | |
4874 | ||
4875 | destreg = DECODE_RM_WORD_REGISTER(rh); | |
4876 | DECODE_PRINTF(","); | |
4877 | srcoffset = decode_rm00_address(rl); | |
4878 | srcval = fetch_data_word(srcoffset); | |
4879 | imm = fetch_byte_imm(); | |
4880 | DECODE_PRINTF2(",%d\n", (s32) imm); | |
4881 | TRACE_AND_STEP(); | |
4882 | res = (s16) srcval *(s16) imm; | |
4883 | ||
4884 | if (res > 0xFFFF) { | |
4885 | SET_FLAG(F_CF); | |
4886 | SET_FLAG(F_OF); | |
4887 | } | |
4888 | else { | |
4889 | CLEAR_FLAG(F_CF); | |
4890 | CLEAR_FLAG(F_OF); | |
4891 | } | |
4892 | *destreg = (u16) res; | |
4893 | } | |
4894 | break; | |
4895 | case 1: | |
4896 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
4897 | u32 *destreg; | |
4898 | u32 srcval; | |
4899 | u32 res_lo, res_hi; | |
4900 | ||
4901 | destreg = DECODE_RM_LONG_REGISTER(rh); | |
4902 | DECODE_PRINTF(","); | |
4903 | srcoffset = decode_rm01_address(rl); | |
4904 | srcval = fetch_data_long(srcoffset); | |
4905 | imm = fetch_byte_imm(); | |
4906 | DECODE_PRINTF2(",%d\n", (s32) imm); | |
4907 | TRACE_AND_STEP(); | |
4908 | imul_long_direct(&res_lo, &res_hi, (s32) srcval, (s32) imm); | |
4909 | if (res_hi != 0) { | |
4910 | SET_FLAG(F_CF); | |
4911 | SET_FLAG(F_OF); | |
4912 | } | |
4913 | else { | |
4914 | CLEAR_FLAG(F_CF); | |
4915 | CLEAR_FLAG(F_OF); | |
4916 | } | |
4917 | *destreg = (u32) res_lo; | |
4918 | } | |
4919 | else { | |
4920 | u16 *destreg; | |
4921 | u16 srcval; | |
4922 | u32 res; | |
4923 | ||
4924 | destreg = DECODE_RM_WORD_REGISTER(rh); | |
4925 | DECODE_PRINTF(","); | |
4926 | srcoffset = decode_rm01_address(rl); | |
4927 | srcval = fetch_data_word(srcoffset); | |
4928 | imm = fetch_byte_imm(); | |
4929 | DECODE_PRINTF2(",%d\n", (s32) imm); | |
4930 | TRACE_AND_STEP(); | |
4931 | res = (s16) srcval *(s16) imm; | |
4932 | ||
4933 | if (res > 0xFFFF) { | |
4934 | SET_FLAG(F_CF); | |
4935 | SET_FLAG(F_OF); | |
4936 | } | |
4937 | else { | |
4938 | CLEAR_FLAG(F_CF); | |
4939 | CLEAR_FLAG(F_OF); | |
4940 | } | |
4941 | *destreg = (u16) res; | |
4942 | } | |
4943 | break; | |
4944 | case 2: | |
4945 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
4946 | u32 *destreg; | |
4947 | u32 srcval; | |
4948 | u32 res_lo, res_hi; | |
4949 | ||
4950 | destreg = DECODE_RM_LONG_REGISTER(rh); | |
4951 | DECODE_PRINTF(","); | |
4952 | srcoffset = decode_rm10_address(rl); | |
4953 | srcval = fetch_data_long(srcoffset); | |
4954 | imm = fetch_byte_imm(); | |
4955 | DECODE_PRINTF2(",%d\n", (s32) imm); | |
4956 | TRACE_AND_STEP(); | |
4957 | imul_long_direct(&res_lo, &res_hi, (s32) srcval, (s32) imm); | |
4958 | if (res_hi != 0) { | |
4959 | SET_FLAG(F_CF); | |
4960 | SET_FLAG(F_OF); | |
4961 | } | |
4962 | else { | |
4963 | CLEAR_FLAG(F_CF); | |
4964 | CLEAR_FLAG(F_OF); | |
4965 | } | |
4966 | *destreg = (u32) res_lo; | |
4967 | } | |
4968 | else { | |
4969 | u16 *destreg; | |
4970 | u16 srcval; | |
4971 | u32 res; | |
4972 | ||
4973 | destreg = DECODE_RM_WORD_REGISTER(rh); | |
4974 | DECODE_PRINTF(","); | |
4975 | srcoffset = decode_rm10_address(rl); | |
4976 | srcval = fetch_data_word(srcoffset); | |
4977 | imm = fetch_byte_imm(); | |
4978 | DECODE_PRINTF2(",%d\n", (s32) imm); | |
4979 | TRACE_AND_STEP(); | |
4980 | res = (s16) srcval *(s16) imm; | |
4981 | ||
4982 | if (res > 0xFFFF) { | |
4983 | SET_FLAG(F_CF); | |
4984 | SET_FLAG(F_OF); | |
4985 | } | |
4986 | else { | |
4987 | CLEAR_FLAG(F_CF); | |
4988 | CLEAR_FLAG(F_OF); | |
4989 | } | |
4990 | *destreg = (u16) res; | |
4991 | } | |
4992 | break; | |
4993 | case 3: /* register to register */ | |
4994 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
4995 | u32 *destreg, *srcreg; | |
4996 | u32 res_lo, res_hi; | |
4997 | ||
4998 | destreg = DECODE_RM_LONG_REGISTER(rh); | |
4999 | DECODE_PRINTF(","); | |
5000 | srcreg = DECODE_RM_LONG_REGISTER(rl); | |
5001 | imm = fetch_byte_imm(); | |
5002 | DECODE_PRINTF2(",%d\n", (s32) imm); | |
5003 | TRACE_AND_STEP(); | |
5004 | imul_long_direct(&res_lo, &res_hi, (s32) * srcreg, (s32) imm); | |
5005 | if (res_hi != 0) { | |
5006 | SET_FLAG(F_CF); | |
5007 | SET_FLAG(F_OF); | |
5008 | } | |
5009 | else { | |
5010 | CLEAR_FLAG(F_CF); | |
5011 | CLEAR_FLAG(F_OF); | |
5012 | } | |
5013 | *destreg = (u32) res_lo; | |
5014 | } | |
5015 | else { | |
5016 | u16 *destreg, *srcreg; | |
5017 | u32 res; | |
5018 | ||
5019 | destreg = DECODE_RM_WORD_REGISTER(rh); | |
5020 | DECODE_PRINTF(","); | |
5021 | srcreg = DECODE_RM_WORD_REGISTER(rl); | |
5022 | imm = fetch_byte_imm(); | |
5023 | DECODE_PRINTF2(",%d\n", (s32) imm); | |
5024 | res = (s16) * srcreg * (s16) imm; | |
5025 | if (res > 0xFFFF) { | |
5026 | SET_FLAG(F_CF); | |
5027 | SET_FLAG(F_OF); | |
5028 | } | |
5029 | else { | |
5030 | CLEAR_FLAG(F_CF); | |
5031 | CLEAR_FLAG(F_OF); | |
5032 | } | |
5033 | *destreg = (u16) res; | |
5034 | } | |
5035 | break; | |
5036 | } | |
5037 | DECODE_CLEAR_SEGOVR(); | |
5038 | END_OF_INSTR(); | |
5039 | } | |
5040 | ||
5041 | /**************************************************************************** | |
5042 | REMARKS: | |
5043 | Handles opcode 0x6c | |
5044 | ****************************************************************************/ | |
5045 | static void | |
5046 | x86emuOp_ins_byte(u8 X86EMU_UNUSED(op1)) | |
5047 | { | |
5048 | START_OF_INSTR(); | |
5049 | DECODE_PRINTF("INSB\n"); | |
5050 | ins(1); | |
5051 | TRACE_AND_STEP(); | |
5052 | DECODE_CLEAR_SEGOVR(); | |
5053 | END_OF_INSTR(); | |
5054 | } | |
5055 | ||
5056 | /**************************************************************************** | |
5057 | REMARKS: | |
5058 | Handles opcode 0x6d | |
5059 | ****************************************************************************/ | |
5060 | static void | |
5061 | x86emuOp_ins_word(u8 X86EMU_UNUSED(op1)) | |
5062 | { | |
5063 | START_OF_INSTR(); | |
5064 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
5065 | DECODE_PRINTF("INSD\n"); | |
5066 | ins(4); | |
5067 | } | |
5068 | else { | |
5069 | DECODE_PRINTF("INSW\n"); | |
5070 | ins(2); | |
5071 | } | |
5072 | TRACE_AND_STEP(); | |
5073 | DECODE_CLEAR_SEGOVR(); | |
5074 | END_OF_INSTR(); | |
5075 | } | |
5076 | ||
5077 | /**************************************************************************** | |
5078 | REMARKS: | |
5079 | Handles opcode 0x6e | |
5080 | ****************************************************************************/ | |
5081 | static void | |
5082 | x86emuOp_outs_byte(u8 X86EMU_UNUSED(op1)) | |
5083 | { | |
5084 | START_OF_INSTR(); | |
5085 | DECODE_PRINTF("OUTSB\n"); | |
5086 | outs(1); | |
5087 | TRACE_AND_STEP(); | |
5088 | DECODE_CLEAR_SEGOVR(); | |
5089 | END_OF_INSTR(); | |
5090 | } | |
5091 | ||
5092 | /**************************************************************************** | |
5093 | REMARKS: | |
5094 | Handles opcode 0x6f | |
5095 | ****************************************************************************/ | |
5096 | static void | |
5097 | x86emuOp_outs_word(u8 X86EMU_UNUSED(op1)) | |
5098 | { | |
5099 | START_OF_INSTR(); | |
5100 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
5101 | DECODE_PRINTF("OUTSD\n"); | |
5102 | outs(4); | |
5103 | } | |
5104 | else { | |
5105 | DECODE_PRINTF("OUTSW\n"); | |
5106 | outs(2); | |
5107 | } | |
5108 | TRACE_AND_STEP(); | |
5109 | DECODE_CLEAR_SEGOVR(); | |
5110 | END_OF_INSTR(); | |
5111 | } | |
5112 | ||
5113 | /**************************************************************************** | |
5114 | REMARKS: | |
5115 | Handles opcode 0x70 | |
5116 | ****************************************************************************/ | |
5117 | static void | |
5118 | x86emuOp_jump_near_O(u8 X86EMU_UNUSED(op1)) | |
5119 | { | |
5120 | s8 offset; | |
5121 | u16 target; | |
5122 | ||
5123 | /* jump to byte offset if overflow flag is set */ | |
5124 | START_OF_INSTR(); | |
5125 | DECODE_PRINTF("JO\t"); | |
5126 | offset = (s8) fetch_byte_imm(); | |
5127 | target = (u16) (M.x86.R_IP + (s16) offset); | |
5128 | DECODE_PRINTF2("%x\n", target); | |
5129 | TRACE_AND_STEP(); | |
5130 | if (ACCESS_FLAG(F_OF)) | |
5131 | M.x86.R_IP = target; | |
5132 | DECODE_CLEAR_SEGOVR(); | |
5133 | END_OF_INSTR(); | |
5134 | } | |
5135 | ||
5136 | /**************************************************************************** | |
5137 | REMARKS: | |
5138 | Handles opcode 0x71 | |
5139 | ****************************************************************************/ | |
5140 | static void | |
5141 | x86emuOp_jump_near_NO(u8 X86EMU_UNUSED(op1)) | |
5142 | { | |
5143 | s8 offset; | |
5144 | u16 target; | |
5145 | ||
5146 | /* jump to byte offset if overflow is not set */ | |
5147 | START_OF_INSTR(); | |
5148 | DECODE_PRINTF("JNO\t"); | |
5149 | offset = (s8) fetch_byte_imm(); | |
5150 | target = (u16) (M.x86.R_IP + (s16) offset); | |
5151 | DECODE_PRINTF2("%x\n", target); | |
5152 | TRACE_AND_STEP(); | |
5153 | if (!ACCESS_FLAG(F_OF)) | |
5154 | M.x86.R_IP = target; | |
5155 | DECODE_CLEAR_SEGOVR(); | |
5156 | END_OF_INSTR(); | |
5157 | } | |
5158 | ||
5159 | /**************************************************************************** | |
5160 | REMARKS: | |
5161 | Handles opcode 0x72 | |
5162 | ****************************************************************************/ | |
5163 | static void | |
5164 | x86emuOp_jump_near_B(u8 X86EMU_UNUSED(op1)) | |
5165 | { | |
5166 | s8 offset; | |
5167 | u16 target; | |
5168 | ||
5169 | /* jump to byte offset if carry flag is set. */ | |
5170 | START_OF_INSTR(); | |
5171 | DECODE_PRINTF("JB\t"); | |
5172 | offset = (s8) fetch_byte_imm(); | |
5173 | target = (u16) (M.x86.R_IP + (s16) offset); | |
5174 | DECODE_PRINTF2("%x\n", target); | |
5175 | TRACE_AND_STEP(); | |
5176 | if (ACCESS_FLAG(F_CF)) | |
5177 | M.x86.R_IP = target; | |
5178 | DECODE_CLEAR_SEGOVR(); | |
5179 | END_OF_INSTR(); | |
5180 | } | |
5181 | ||
5182 | /**************************************************************************** | |
5183 | REMARKS: | |
5184 | Handles opcode 0x73 | |
5185 | ****************************************************************************/ | |
5186 | static void | |
5187 | x86emuOp_jump_near_NB(u8 X86EMU_UNUSED(op1)) | |
5188 | { | |
5189 | s8 offset; | |
5190 | u16 target; | |
5191 | ||
5192 | /* jump to byte offset if carry flag is clear. */ | |
5193 | START_OF_INSTR(); | |
5194 | DECODE_PRINTF("JNB\t"); | |
5195 | offset = (s8) fetch_byte_imm(); | |
5196 | target = (u16) (M.x86.R_IP + (s16) offset); | |
5197 | DECODE_PRINTF2("%x\n", target); | |
5198 | TRACE_AND_STEP(); | |
5199 | if (!ACCESS_FLAG(F_CF)) | |
5200 | M.x86.R_IP = target; | |
5201 | DECODE_CLEAR_SEGOVR(); | |
5202 | END_OF_INSTR(); | |
5203 | } | |
5204 | ||
5205 | /**************************************************************************** | |
5206 | REMARKS: | |
5207 | Handles opcode 0x74 | |
5208 | ****************************************************************************/ | |
5209 | static void | |
5210 | x86emuOp_jump_near_Z(u8 X86EMU_UNUSED(op1)) | |
5211 | { | |
5212 | s8 offset; | |
5213 | u16 target; | |
5214 | ||
5215 | /* jump to byte offset if zero flag is set. */ | |
5216 | START_OF_INSTR(); | |
5217 | DECODE_PRINTF("JZ\t"); | |
5218 | offset = (s8) fetch_byte_imm(); | |
5219 | target = (u16) (M.x86.R_IP + (s16) offset); | |
5220 | DECODE_PRINTF2("%x\n", target); | |
5221 | TRACE_AND_STEP(); | |
5222 | if (ACCESS_FLAG(F_ZF)) | |
5223 | M.x86.R_IP = target; | |
5224 | DECODE_CLEAR_SEGOVR(); | |
5225 | END_OF_INSTR(); | |
5226 | } | |
5227 | ||
5228 | /**************************************************************************** | |
5229 | REMARKS: | |
5230 | Handles opcode 0x75 | |
5231 | ****************************************************************************/ | |
5232 | static void | |
5233 | x86emuOp_jump_near_NZ(u8 X86EMU_UNUSED(op1)) | |
5234 | { | |
5235 | s8 offset; | |
5236 | u16 target; | |
5237 | ||
5238 | /* jump to byte offset if zero flag is clear. */ | |
5239 | START_OF_INSTR(); | |
5240 | DECODE_PRINTF("JNZ\t"); | |
5241 | offset = (s8) fetch_byte_imm(); | |
5242 | target = (u16) (M.x86.R_IP + (s16) offset); | |
5243 | DECODE_PRINTF2("%x\n", target); | |
5244 | TRACE_AND_STEP(); | |
5245 | if (!ACCESS_FLAG(F_ZF)) | |
5246 | M.x86.R_IP = target; | |
5247 | DECODE_CLEAR_SEGOVR(); | |
5248 | END_OF_INSTR(); | |
5249 | } | |
5250 | ||
5251 | /**************************************************************************** | |
5252 | REMARKS: | |
5253 | Handles opcode 0x76 | |
5254 | ****************************************************************************/ | |
5255 | static void | |
5256 | x86emuOp_jump_near_BE(u8 X86EMU_UNUSED(op1)) | |
5257 | { | |
5258 | s8 offset; | |
5259 | u16 target; | |
5260 | ||
5261 | /* jump to byte offset if carry flag is set or if the zero | |
5262 | flag is set. */ | |
5263 | START_OF_INSTR(); | |
5264 | DECODE_PRINTF("JBE\t"); | |
5265 | offset = (s8) fetch_byte_imm(); | |
5266 | target = (u16) (M.x86.R_IP + (s16) offset); | |
5267 | DECODE_PRINTF2("%x\n", target); | |
5268 | TRACE_AND_STEP(); | |
5269 | if (ACCESS_FLAG(F_CF) || ACCESS_FLAG(F_ZF)) | |
5270 | M.x86.R_IP = target; | |
5271 | DECODE_CLEAR_SEGOVR(); | |
5272 | END_OF_INSTR(); | |
5273 | } | |
5274 | ||
5275 | /**************************************************************************** | |
5276 | REMARKS: | |
5277 | Handles opcode 0x77 | |
5278 | ****************************************************************************/ | |
5279 | static void | |
5280 | x86emuOp_jump_near_NBE(u8 X86EMU_UNUSED(op1)) | |
5281 | { | |
5282 | s8 offset; | |
5283 | u16 target; | |
5284 | ||
5285 | /* jump to byte offset if carry flag is clear and if the zero | |
5286 | flag is clear */ | |
5287 | START_OF_INSTR(); | |
5288 | DECODE_PRINTF("JNBE\t"); | |
5289 | offset = (s8) fetch_byte_imm(); | |
5290 | target = (u16) (M.x86.R_IP + (s16) offset); | |
5291 | DECODE_PRINTF2("%x\n", target); | |
5292 | TRACE_AND_STEP(); | |
5293 | if (!(ACCESS_FLAG(F_CF) || ACCESS_FLAG(F_ZF))) | |
5294 | M.x86.R_IP = target; | |
5295 | DECODE_CLEAR_SEGOVR(); | |
5296 | END_OF_INSTR(); | |
5297 | } | |
5298 | ||
5299 | /**************************************************************************** | |
5300 | REMARKS: | |
5301 | Handles opcode 0x78 | |
5302 | ****************************************************************************/ | |
5303 | static void | |
5304 | x86emuOp_jump_near_S(u8 X86EMU_UNUSED(op1)) | |
5305 | { | |
5306 | s8 offset; | |
5307 | u16 target; | |
5308 | ||
5309 | /* jump to byte offset if sign flag is set */ | |
5310 | START_OF_INSTR(); | |
5311 | DECODE_PRINTF("JS\t"); | |
5312 | offset = (s8) fetch_byte_imm(); | |
5313 | target = (u16) (M.x86.R_IP + (s16) offset); | |
5314 | DECODE_PRINTF2("%x\n", target); | |
5315 | TRACE_AND_STEP(); | |
5316 | if (ACCESS_FLAG(F_SF)) | |
5317 | M.x86.R_IP = target; | |
5318 | DECODE_CLEAR_SEGOVR(); | |
5319 | END_OF_INSTR(); | |
5320 | } | |
5321 | ||
5322 | /**************************************************************************** | |
5323 | REMARKS: | |
5324 | Handles opcode 0x79 | |
5325 | ****************************************************************************/ | |
5326 | static void | |
5327 | x86emuOp_jump_near_NS(u8 X86EMU_UNUSED(op1)) | |
5328 | { | |
5329 | s8 offset; | |
5330 | u16 target; | |
5331 | ||
5332 | /* jump to byte offset if sign flag is clear */ | |
5333 | START_OF_INSTR(); | |
5334 | DECODE_PRINTF("JNS\t"); | |
5335 | offset = (s8) fetch_byte_imm(); | |
5336 | target = (u16) (M.x86.R_IP + (s16) offset); | |
5337 | DECODE_PRINTF2("%x\n", target); | |
5338 | TRACE_AND_STEP(); | |
5339 | if (!ACCESS_FLAG(F_SF)) | |
5340 | M.x86.R_IP = target; | |
5341 | DECODE_CLEAR_SEGOVR(); | |
5342 | END_OF_INSTR(); | |
5343 | } | |
5344 | ||
5345 | /**************************************************************************** | |
5346 | REMARKS: | |
5347 | Handles opcode 0x7a | |
5348 | ****************************************************************************/ | |
5349 | static void | |
5350 | x86emuOp_jump_near_P(u8 X86EMU_UNUSED(op1)) | |
5351 | { | |
5352 | s8 offset; | |
5353 | u16 target; | |
5354 | ||
5355 | /* jump to byte offset if parity flag is set (even parity) */ | |
5356 | START_OF_INSTR(); | |
5357 | DECODE_PRINTF("JP\t"); | |
5358 | offset = (s8) fetch_byte_imm(); | |
5359 | target = (u16) (M.x86.R_IP + (s16) offset); | |
5360 | DECODE_PRINTF2("%x\n", target); | |
5361 | TRACE_AND_STEP(); | |
5362 | if (ACCESS_FLAG(F_PF)) | |
5363 | M.x86.R_IP = target; | |
5364 | DECODE_CLEAR_SEGOVR(); | |
5365 | END_OF_INSTR(); | |
5366 | } | |
5367 | ||
5368 | /**************************************************************************** | |
5369 | REMARKS: | |
5370 | Handles opcode 0x7b | |
5371 | ****************************************************************************/ | |
5372 | static void | |
5373 | x86emuOp_jump_near_NP(u8 X86EMU_UNUSED(op1)) | |
5374 | { | |
5375 | s8 offset; | |
5376 | u16 target; | |
5377 | ||
5378 | /* jump to byte offset if parity flag is clear (odd parity) */ | |
5379 | START_OF_INSTR(); | |
5380 | DECODE_PRINTF("JNP\t"); | |
5381 | offset = (s8) fetch_byte_imm(); | |
5382 | target = (u16) (M.x86.R_IP + (s16) offset); | |
5383 | DECODE_PRINTF2("%x\n", target); | |
5384 | TRACE_AND_STEP(); | |
5385 | if (!ACCESS_FLAG(F_PF)) | |
5386 | M.x86.R_IP = target; | |
5387 | DECODE_CLEAR_SEGOVR(); | |
5388 | END_OF_INSTR(); | |
5389 | } | |
5390 | ||
5391 | /**************************************************************************** | |
5392 | REMARKS: | |
5393 | Handles opcode 0x7c | |
5394 | ****************************************************************************/ | |
5395 | static void | |
5396 | x86emuOp_jump_near_L(u8 X86EMU_UNUSED(op1)) | |
5397 | { | |
5398 | s8 offset; | |
5399 | u16 target; | |
5400 | int sf, of; | |
5401 | ||
5402 | /* jump to byte offset if sign flag not equal to overflow flag. */ | |
5403 | START_OF_INSTR(); | |
5404 | DECODE_PRINTF("JL\t"); | |
5405 | offset = (s8) fetch_byte_imm(); | |
5406 | target = (u16) (M.x86.R_IP + (s16) offset); | |
5407 | DECODE_PRINTF2("%x\n", target); | |
5408 | TRACE_AND_STEP(); | |
5409 | sf = ACCESS_FLAG(F_SF) != 0; | |
5410 | of = ACCESS_FLAG(F_OF) != 0; | |
5411 | if (sf ^ of) | |
5412 | M.x86.R_IP = target; | |
5413 | DECODE_CLEAR_SEGOVR(); | |
5414 | END_OF_INSTR(); | |
5415 | } | |
5416 | ||
5417 | /**************************************************************************** | |
5418 | REMARKS: | |
5419 | Handles opcode 0x7d | |
5420 | ****************************************************************************/ | |
5421 | static void | |
5422 | x86emuOp_jump_near_NL(u8 X86EMU_UNUSED(op1)) | |
5423 | { | |
5424 | s8 offset; | |
5425 | u16 target; | |
5426 | int sf, of; | |
5427 | ||
5428 | /* jump to byte offset if sign flag not equal to overflow flag. */ | |
5429 | START_OF_INSTR(); | |
5430 | DECODE_PRINTF("JNL\t"); | |
5431 | offset = (s8) fetch_byte_imm(); | |
5432 | target = (u16) (M.x86.R_IP + (s16) offset); | |
5433 | DECODE_PRINTF2("%x\n", target); | |
5434 | TRACE_AND_STEP(); | |
5435 | sf = ACCESS_FLAG(F_SF) != 0; | |
5436 | of = ACCESS_FLAG(F_OF) != 0; | |
5437 | /* note: inverse of above, but using == instead of xor. */ | |
5438 | if (sf == of) | |
5439 | M.x86.R_IP = target; | |
5440 | DECODE_CLEAR_SEGOVR(); | |
5441 | END_OF_INSTR(); | |
5442 | } | |
5443 | ||
5444 | /**************************************************************************** | |
5445 | REMARKS: | |
5446 | Handles opcode 0x7e | |
5447 | ****************************************************************************/ | |
5448 | static void | |
5449 | x86emuOp_jump_near_LE(u8 X86EMU_UNUSED(op1)) | |
5450 | { | |
5451 | s8 offset; | |
5452 | u16 target; | |
5453 | int sf, of; | |
5454 | ||
5455 | /* jump to byte offset if sign flag not equal to overflow flag | |
5456 | or the zero flag is set */ | |
5457 | START_OF_INSTR(); | |
5458 | DECODE_PRINTF("JLE\t"); | |
5459 | offset = (s8) fetch_byte_imm(); | |
5460 | target = (u16) (M.x86.R_IP + (s16) offset); | |
5461 | DECODE_PRINTF2("%x\n", target); | |
5462 | TRACE_AND_STEP(); | |
5463 | sf = ACCESS_FLAG(F_SF) != 0; | |
5464 | of = ACCESS_FLAG(F_OF) != 0; | |
5465 | if ((sf ^ of) || ACCESS_FLAG(F_ZF)) | |
5466 | M.x86.R_IP = target; | |
5467 | DECODE_CLEAR_SEGOVR(); | |
5468 | END_OF_INSTR(); | |
5469 | } | |
5470 | ||
5471 | /**************************************************************************** | |
5472 | REMARKS: | |
5473 | Handles opcode 0x7f | |
5474 | ****************************************************************************/ | |
5475 | static void | |
5476 | x86emuOp_jump_near_NLE(u8 X86EMU_UNUSED(op1)) | |
5477 | { | |
5478 | s8 offset; | |
5479 | u16 target; | |
5480 | int sf, of; | |
5481 | ||
5482 | /* jump to byte offset if sign flag equal to overflow flag. | |
5483 | and the zero flag is clear */ | |
5484 | START_OF_INSTR(); | |
5485 | DECODE_PRINTF("JNLE\t"); | |
5486 | offset = (s8) fetch_byte_imm(); | |
5487 | target = (u16) (M.x86.R_IP + (s16) offset); | |
5488 | DECODE_PRINTF2("%x\n", target); | |
5489 | TRACE_AND_STEP(); | |
5490 | sf = ACCESS_FLAG(F_SF) != 0; | |
5491 | of = ACCESS_FLAG(F_OF) != 0; | |
5492 | if ((sf == of) && !ACCESS_FLAG(F_ZF)) | |
5493 | M.x86.R_IP = target; | |
5494 | DECODE_CLEAR_SEGOVR(); | |
5495 | END_OF_INSTR(); | |
5496 | } | |
5497 | ||
5498 | static u8(*opc80_byte_operation[]) (u8 d, u8 s) = { | |
5499 | add_byte, /* 00 */ | |
5500 | or_byte, /* 01 */ | |
5501 | adc_byte, /* 02 */ | |
5502 | sbb_byte, /* 03 */ | |
5503 | and_byte, /* 04 */ | |
5504 | sub_byte, /* 05 */ | |
5505 | xor_byte, /* 06 */ | |
5506 | cmp_byte, /* 07 */ | |
5507 | }; | |
5508 | ||
5509 | /**************************************************************************** | |
5510 | REMARKS: | |
5511 | Handles opcode 0x80 | |
5512 | ****************************************************************************/ | |
5513 | static void | |
5514 | x86emuOp_opc80_byte_RM_IMM(u8 X86EMU_UNUSED(op1)) | |
5515 | { | |
5516 | int mod, rl, rh; | |
5517 | u8 *destreg; | |
5518 | uint destoffset; | |
5519 | u8 imm; | |
5520 | u8 destval; | |
5521 | ||
5522 | /* | |
5523 | * Weirdo special case instruction format. Part of the opcode | |
5524 | * held below in "RH". Doubly nested case would result, except | |
5525 | * that the decoded instruction | |
5526 | */ | |
5527 | START_OF_INSTR(); | |
5528 | FETCH_DECODE_MODRM(mod, rh, rl); | |
5529 | #ifdef DEBUG | |
5530 | if (DEBUG_DECODE()) { | |
5531 | /* XXX DECODE_PRINTF may be changed to something more | |
5532 | general, so that it is important to leave the strings | |
5533 | in the same format, even though the result is that the | |
5534 | above test is done twice. */ | |
5535 | ||
5536 | switch (rh) { | |
5537 | case 0: | |
5538 | DECODE_PRINTF("ADD\t"); | |
5539 | break; | |
5540 | case 1: | |
5541 | DECODE_PRINTF("OR\t"); | |
5542 | break; | |
5543 | case 2: | |
5544 | DECODE_PRINTF("ADC\t"); | |
5545 | break; | |
5546 | case 3: | |
5547 | DECODE_PRINTF("SBB\t"); | |
5548 | break; | |
5549 | case 4: | |
5550 | DECODE_PRINTF("AND\t"); | |
5551 | break; | |
5552 | case 5: | |
5553 | DECODE_PRINTF("SUB\t"); | |
5554 | break; | |
5555 | case 6: | |
5556 | DECODE_PRINTF("XOR\t"); | |
5557 | break; | |
5558 | case 7: | |
5559 | DECODE_PRINTF("CMP\t"); | |
5560 | break; | |
5561 | } | |
5562 | } | |
5563 | #endif | |
5564 | /* know operation, decode the mod byte to find the addressing | |
5565 | mode. */ | |
5566 | switch (mod) { | |
5567 | case 0: | |
5568 | DECODE_PRINTF("BYTE PTR "); | |
5569 | destoffset = decode_rm00_address(rl); | |
5570 | DECODE_PRINTF(","); | |
5571 | destval = fetch_data_byte(destoffset); | |
5572 | imm = fetch_byte_imm(); | |
5573 | DECODE_PRINTF2("%x\n", imm); | |
5574 | TRACE_AND_STEP(); | |
5575 | destval = (*opc80_byte_operation[rh]) (destval, imm); | |
5576 | if (rh != 7) | |
5577 | store_data_byte(destoffset, destval); | |
5578 | break; | |
5579 | case 1: | |
5580 | DECODE_PRINTF("BYTE PTR "); | |
5581 | destoffset = decode_rm01_address(rl); | |
5582 | DECODE_PRINTF(","); | |
5583 | destval = fetch_data_byte(destoffset); | |
5584 | imm = fetch_byte_imm(); | |
5585 | DECODE_PRINTF2("%x\n", imm); | |
5586 | TRACE_AND_STEP(); | |
5587 | destval = (*opc80_byte_operation[rh]) (destval, imm); | |
5588 | if (rh != 7) | |
5589 | store_data_byte(destoffset, destval); | |
5590 | break; | |
5591 | case 2: | |
5592 | DECODE_PRINTF("BYTE PTR "); | |
5593 | destoffset = decode_rm10_address(rl); | |
5594 | DECODE_PRINTF(","); | |
5595 | destval = fetch_data_byte(destoffset); | |
5596 | imm = fetch_byte_imm(); | |
5597 | DECODE_PRINTF2("%x\n", imm); | |
5598 | TRACE_AND_STEP(); | |
5599 | destval = (*opc80_byte_operation[rh]) (destval, imm); | |
5600 | if (rh != 7) | |
5601 | store_data_byte(destoffset, destval); | |
5602 | break; | |
5603 | case 3: /* register to register */ | |
5604 | destreg = DECODE_RM_BYTE_REGISTER(rl); | |
5605 | DECODE_PRINTF(","); | |
5606 | imm = fetch_byte_imm(); | |
5607 | DECODE_PRINTF2("%x\n", imm); | |
5608 | TRACE_AND_STEP(); | |
5609 | destval = (*opc80_byte_operation[rh]) (*destreg, imm); | |
5610 | if (rh != 7) | |
5611 | *destreg = destval; | |
5612 | break; | |
5613 | } | |
5614 | DECODE_CLEAR_SEGOVR(); | |
5615 | END_OF_INSTR(); | |
5616 | } | |
5617 | ||
5618 | static u16(*opc81_word_operation[]) (u16 d, u16 s) = { | |
5619 | add_word, /*00 */ | |
5620 | or_word, /*01 */ | |
5621 | adc_word, /*02 */ | |
5622 | sbb_word, /*03 */ | |
5623 | and_word, /*04 */ | |
5624 | sub_word, /*05 */ | |
5625 | xor_word, /*06 */ | |
5626 | cmp_word, /*07 */ | |
5627 | }; | |
5628 | ||
5629 | static u32(*opc81_long_operation[]) (u32 d, u32 s) = { | |
5630 | add_long, /*00 */ | |
5631 | or_long, /*01 */ | |
5632 | adc_long, /*02 */ | |
5633 | sbb_long, /*03 */ | |
5634 | and_long, /*04 */ | |
5635 | sub_long, /*05 */ | |
5636 | xor_long, /*06 */ | |
5637 | cmp_long, /*07 */ | |
5638 | }; | |
5639 | ||
5640 | /**************************************************************************** | |
5641 | REMARKS: | |
5642 | Handles opcode 0x81 | |
5643 | ****************************************************************************/ | |
5644 | static void | |
5645 | x86emuOp_opc81_word_RM_IMM(u8 X86EMU_UNUSED(op1)) | |
5646 | { | |
5647 | int mod, rl, rh; | |
5648 | uint destoffset; | |
5649 | ||
5650 | /* | |
5651 | * Weirdo special case instruction format. Part of the opcode | |
5652 | * held below in "RH". Doubly nested case would result, except | |
5653 | * that the decoded instruction | |
5654 | */ | |
5655 | START_OF_INSTR(); | |
5656 | FETCH_DECODE_MODRM(mod, rh, rl); | |
5657 | #ifdef DEBUG | |
5658 | if (DEBUG_DECODE()) { | |
5659 | /* XXX DECODE_PRINTF may be changed to something more | |
5660 | general, so that it is important to leave the strings | |
5661 | in the same format, even though the result is that the | |
5662 | above test is done twice. */ | |
5663 | ||
5664 | switch (rh) { | |
5665 | case 0: | |
5666 | DECODE_PRINTF("ADD\t"); | |
5667 | break; | |
5668 | case 1: | |
5669 | DECODE_PRINTF("OR\t"); | |
5670 | break; | |
5671 | case 2: | |
5672 | DECODE_PRINTF("ADC\t"); | |
5673 | break; | |
5674 | case 3: | |
5675 | DECODE_PRINTF("SBB\t"); | |
5676 | break; | |
5677 | case 4: | |
5678 | DECODE_PRINTF("AND\t"); | |
5679 | break; | |
5680 | case 5: | |
5681 | DECODE_PRINTF("SUB\t"); | |
5682 | break; | |
5683 | case 6: | |
5684 | DECODE_PRINTF("XOR\t"); | |
5685 | break; | |
5686 | case 7: | |
5687 | DECODE_PRINTF("CMP\t"); | |
5688 | break; | |
5689 | } | |
5690 | } | |
5691 | #endif | |
5692 | /* | |
5693 | * Know operation, decode the mod byte to find the addressing | |
5694 | * mode. | |
5695 | */ | |
5696 | switch (mod) { | |
5697 | case 0: | |
5698 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
5699 | u32 destval, imm; | |
5700 | ||
5701 | DECODE_PRINTF("DWORD PTR "); | |
5702 | destoffset = decode_rm00_address(rl); | |
5703 | DECODE_PRINTF(","); | |
5704 | destval = fetch_data_long(destoffset); | |
5705 | imm = fetch_long_imm(); | |
5706 | DECODE_PRINTF2("%x\n", imm); | |
5707 | TRACE_AND_STEP(); | |
5708 | destval = (*opc81_long_operation[rh]) (destval, imm); | |
5709 | if (rh != 7) | |
5710 | store_data_long(destoffset, destval); | |
5711 | } | |
5712 | else { | |
5713 | u16 destval, imm; | |
5714 | ||
5715 | DECODE_PRINTF("WORD PTR "); | |
5716 | destoffset = decode_rm00_address(rl); | |
5717 | DECODE_PRINTF(","); | |
5718 | destval = fetch_data_word(destoffset); | |
5719 | imm = fetch_word_imm(); | |
5720 | DECODE_PRINTF2("%x\n", imm); | |
5721 | TRACE_AND_STEP(); | |
5722 | destval = (*opc81_word_operation[rh]) (destval, imm); | |
5723 | if (rh != 7) | |
5724 | store_data_word(destoffset, destval); | |
5725 | } | |
5726 | break; | |
5727 | case 1: | |
5728 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
5729 | u32 destval, imm; | |
5730 | ||
5731 | DECODE_PRINTF("DWORD PTR "); | |
5732 | destoffset = decode_rm01_address(rl); | |
5733 | DECODE_PRINTF(","); | |
5734 | destval = fetch_data_long(destoffset); | |
5735 | imm = fetch_long_imm(); | |
5736 | DECODE_PRINTF2("%x\n", imm); | |
5737 | TRACE_AND_STEP(); | |
5738 | destval = (*opc81_long_operation[rh]) (destval, imm); | |
5739 | if (rh != 7) | |
5740 | store_data_long(destoffset, destval); | |
5741 | } | |
5742 | else { | |
5743 | u16 destval, imm; | |
5744 | ||
5745 | DECODE_PRINTF("WORD PTR "); | |
5746 | destoffset = decode_rm01_address(rl); | |
5747 | DECODE_PRINTF(","); | |
5748 | destval = fetch_data_word(destoffset); | |
5749 | imm = fetch_word_imm(); | |
5750 | DECODE_PRINTF2("%x\n", imm); | |
5751 | TRACE_AND_STEP(); | |
5752 | destval = (*opc81_word_operation[rh]) (destval, imm); | |
5753 | if (rh != 7) | |
5754 | store_data_word(destoffset, destval); | |
5755 | } | |
5756 | break; | |
5757 | case 2: | |
5758 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
5759 | u32 destval, imm; | |
5760 | ||
5761 | DECODE_PRINTF("DWORD PTR "); | |
5762 | destoffset = decode_rm10_address(rl); | |
5763 | DECODE_PRINTF(","); | |
5764 | destval = fetch_data_long(destoffset); | |
5765 | imm = fetch_long_imm(); | |
5766 | DECODE_PRINTF2("%x\n", imm); | |
5767 | TRACE_AND_STEP(); | |
5768 | destval = (*opc81_long_operation[rh]) (destval, imm); | |
5769 | if (rh != 7) | |
5770 | store_data_long(destoffset, destval); | |
5771 | } | |
5772 | else { | |
5773 | u16 destval, imm; | |
5774 | ||
5775 | DECODE_PRINTF("WORD PTR "); | |
5776 | destoffset = decode_rm10_address(rl); | |
5777 | DECODE_PRINTF(","); | |
5778 | destval = fetch_data_word(destoffset); | |
5779 | imm = fetch_word_imm(); | |
5780 | DECODE_PRINTF2("%x\n", imm); | |
5781 | TRACE_AND_STEP(); | |
5782 | destval = (*opc81_word_operation[rh]) (destval, imm); | |
5783 | if (rh != 7) | |
5784 | store_data_word(destoffset, destval); | |
5785 | } | |
5786 | break; | |
5787 | case 3: /* register to register */ | |
5788 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
5789 | u32 *destreg; | |
5790 | u32 destval, imm; | |
5791 | ||
5792 | destreg = DECODE_RM_LONG_REGISTER(rl); | |
5793 | DECODE_PRINTF(","); | |
5794 | imm = fetch_long_imm(); | |
5795 | DECODE_PRINTF2("%x\n", imm); | |
5796 | TRACE_AND_STEP(); | |
5797 | destval = (*opc81_long_operation[rh]) (*destreg, imm); | |
5798 | if (rh != 7) | |
5799 | *destreg = destval; | |
5800 | } | |
5801 | else { | |
5802 | u16 *destreg; | |
5803 | u16 destval, imm; | |
5804 | ||
5805 | destreg = DECODE_RM_WORD_REGISTER(rl); | |
5806 | DECODE_PRINTF(","); | |
5807 | imm = fetch_word_imm(); | |
5808 | DECODE_PRINTF2("%x\n", imm); | |
5809 | TRACE_AND_STEP(); | |
5810 | destval = (*opc81_word_operation[rh]) (*destreg, imm); | |
5811 | if (rh != 7) | |
5812 | *destreg = destval; | |
5813 | } | |
5814 | break; | |
5815 | } | |
5816 | DECODE_CLEAR_SEGOVR(); | |
5817 | END_OF_INSTR(); | |
5818 | } | |
5819 | ||
5820 | static u8(*opc82_byte_operation[]) (u8 s, u8 d) = { | |
5821 | add_byte, /*00 */ | |
5822 | or_byte, /*01 *//*YYY UNUSED ???? */ | |
5823 | adc_byte, /*02 */ | |
5824 | sbb_byte, /*03 */ | |
5825 | and_byte, /*04 *//*YYY UNUSED ???? */ | |
5826 | sub_byte, /*05 */ | |
5827 | xor_byte, /*06 *//*YYY UNUSED ???? */ | |
5828 | cmp_byte, /*07 */ | |
5829 | }; | |
5830 | ||
5831 | /**************************************************************************** | |
5832 | REMARKS: | |
5833 | Handles opcode 0x82 | |
5834 | ****************************************************************************/ | |
5835 | static void | |
5836 | x86emuOp_opc82_byte_RM_IMM(u8 X86EMU_UNUSED(op1)) | |
5837 | { | |
5838 | int mod, rl, rh; | |
5839 | u8 *destreg; | |
5840 | uint destoffset; | |
5841 | u8 imm; | |
5842 | u8 destval; | |
5843 | ||
5844 | /* | |
5845 | * Weirdo special case instruction format. Part of the opcode | |
5846 | * held below in "RH". Doubly nested case would result, except | |
5847 | * that the decoded instruction Similar to opcode 81, except that | |
5848 | * the immediate byte is sign extended to a word length. | |
5849 | */ | |
5850 | START_OF_INSTR(); | |
5851 | FETCH_DECODE_MODRM(mod, rh, rl); | |
5852 | #ifdef DEBUG | |
5853 | if (DEBUG_DECODE()) { | |
5854 | /* XXX DECODE_PRINTF may be changed to something more | |
5855 | general, so that it is important to leave the strings | |
5856 | in the same format, even though the result is that the | |
5857 | above test is done twice. */ | |
5858 | switch (rh) { | |
5859 | case 0: | |
5860 | DECODE_PRINTF("ADD\t"); | |
5861 | break; | |
5862 | case 1: | |
5863 | DECODE_PRINTF("OR\t"); | |
5864 | break; | |
5865 | case 2: | |
5866 | DECODE_PRINTF("ADC\t"); | |
5867 | break; | |
5868 | case 3: | |
5869 | DECODE_PRINTF("SBB\t"); | |
5870 | break; | |
5871 | case 4: | |
5872 | DECODE_PRINTF("AND\t"); | |
5873 | break; | |
5874 | case 5: | |
5875 | DECODE_PRINTF("SUB\t"); | |
5876 | break; | |
5877 | case 6: | |
5878 | DECODE_PRINTF("XOR\t"); | |
5879 | break; | |
5880 | case 7: | |
5881 | DECODE_PRINTF("CMP\t"); | |
5882 | break; | |
5883 | } | |
5884 | } | |
5885 | #endif | |
5886 | /* know operation, decode the mod byte to find the addressing | |
5887 | mode. */ | |
5888 | switch (mod) { | |
5889 | case 0: | |
5890 | DECODE_PRINTF("BYTE PTR "); | |
5891 | destoffset = decode_rm00_address(rl); | |
5892 | destval = fetch_data_byte(destoffset); | |
5893 | imm = fetch_byte_imm(); | |
5894 | DECODE_PRINTF2(",%x\n", imm); | |
5895 | TRACE_AND_STEP(); | |
5896 | destval = (*opc82_byte_operation[rh]) (destval, imm); | |
5897 | if (rh != 7) | |
5898 | store_data_byte(destoffset, destval); | |
5899 | break; | |
5900 | case 1: | |
5901 | DECODE_PRINTF("BYTE PTR "); | |
5902 | destoffset = decode_rm01_address(rl); | |
5903 | destval = fetch_data_byte(destoffset); | |
5904 | imm = fetch_byte_imm(); | |
5905 | DECODE_PRINTF2(",%x\n", imm); | |
5906 | TRACE_AND_STEP(); | |
5907 | destval = (*opc82_byte_operation[rh]) (destval, imm); | |
5908 | if (rh != 7) | |
5909 | store_data_byte(destoffset, destval); | |
5910 | break; | |
5911 | case 2: | |
5912 | DECODE_PRINTF("BYTE PTR "); | |
5913 | destoffset = decode_rm10_address(rl); | |
5914 | destval = fetch_data_byte(destoffset); | |
5915 | imm = fetch_byte_imm(); | |
5916 | DECODE_PRINTF2(",%x\n", imm); | |
5917 | TRACE_AND_STEP(); | |
5918 | destval = (*opc82_byte_operation[rh]) (destval, imm); | |
5919 | if (rh != 7) | |
5920 | store_data_byte(destoffset, destval); | |
5921 | break; | |
5922 | case 3: /* register to register */ | |
5923 | destreg = DECODE_RM_BYTE_REGISTER(rl); | |
5924 | imm = fetch_byte_imm(); | |
5925 | DECODE_PRINTF2(",%x\n", imm); | |
5926 | TRACE_AND_STEP(); | |
5927 | destval = (*opc82_byte_operation[rh]) (*destreg, imm); | |
5928 | if (rh != 7) | |
5929 | *destreg = destval; | |
5930 | break; | |
5931 | } | |
5932 | DECODE_CLEAR_SEGOVR(); | |
5933 | END_OF_INSTR(); | |
5934 | } | |
5935 | ||
5936 | static u16(*opc83_word_operation[]) (u16 s, u16 d) = { | |
5937 | add_word, /*00 */ | |
5938 | or_word, /*01 *//*YYY UNUSED ???? */ | |
5939 | adc_word, /*02 */ | |
5940 | sbb_word, /*03 */ | |
5941 | and_word, /*04 *//*YYY UNUSED ???? */ | |
5942 | sub_word, /*05 */ | |
5943 | xor_word, /*06 *//*YYY UNUSED ???? */ | |
5944 | cmp_word, /*07 */ | |
5945 | }; | |
5946 | ||
5947 | static u32(*opc83_long_operation[]) (u32 s, u32 d) = { | |
5948 | add_long, /*00 */ | |
5949 | or_long, /*01 *//*YYY UNUSED ???? */ | |
5950 | adc_long, /*02 */ | |
5951 | sbb_long, /*03 */ | |
5952 | and_long, /*04 *//*YYY UNUSED ???? */ | |
5953 | sub_long, /*05 */ | |
5954 | xor_long, /*06 *//*YYY UNUSED ???? */ | |
5955 | cmp_long, /*07 */ | |
5956 | }; | |
5957 | ||
5958 | /**************************************************************************** | |
5959 | REMARKS: | |
5960 | Handles opcode 0x83 | |
5961 | ****************************************************************************/ | |
5962 | static void | |
5963 | x86emuOp_opc83_word_RM_IMM(u8 X86EMU_UNUSED(op1)) | |
5964 | { | |
5965 | int mod, rl, rh; | |
5966 | uint destoffset; | |
5967 | ||
5968 | /* | |
5969 | * Weirdo special case instruction format. Part of the opcode | |
5970 | * held below in "RH". Doubly nested case would result, except | |
5971 | * that the decoded instruction Similar to opcode 81, except that | |
5972 | * the immediate byte is sign extended to a word length. | |
5973 | */ | |
5974 | START_OF_INSTR(); | |
5975 | FETCH_DECODE_MODRM(mod, rh, rl); | |
5976 | #ifdef DEBUG | |
5977 | if (DEBUG_DECODE()) { | |
5978 | /* XXX DECODE_PRINTF may be changed to something more | |
5979 | general, so that it is important to leave the strings | |
5980 | in the same format, even though the result is that the | |
5981 | above test is done twice. */ | |
5982 | switch (rh) { | |
5983 | case 0: | |
5984 | DECODE_PRINTF("ADD\t"); | |
5985 | break; | |
5986 | case 1: | |
5987 | DECODE_PRINTF("OR\t"); | |
5988 | break; | |
5989 | case 2: | |
5990 | DECODE_PRINTF("ADC\t"); | |
5991 | break; | |
5992 | case 3: | |
5993 | DECODE_PRINTF("SBB\t"); | |
5994 | break; | |
5995 | case 4: | |
5996 | DECODE_PRINTF("AND\t"); | |
5997 | break; | |
5998 | case 5: | |
5999 | DECODE_PRINTF("SUB\t"); | |
6000 | break; | |
6001 | case 6: | |
6002 | DECODE_PRINTF("XOR\t"); | |
6003 | break; | |
6004 | case 7: | |
6005 | DECODE_PRINTF("CMP\t"); | |
6006 | break; | |
6007 | } | |
6008 | } | |
6009 | #endif | |
6010 | /* know operation, decode the mod byte to find the addressing | |
6011 | mode. */ | |
6012 | switch (mod) { | |
6013 | case 0: | |
6014 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
6015 | u32 destval, imm; | |
6016 | ||
6017 | DECODE_PRINTF("DWORD PTR "); | |
6018 | destoffset = decode_rm00_address(rl); | |
6019 | destval = fetch_data_long(destoffset); | |
6020 | imm = (s8) fetch_byte_imm(); | |
6021 | DECODE_PRINTF2(",%x\n", imm); | |
6022 | TRACE_AND_STEP(); | |
6023 | destval = (*opc83_long_operation[rh]) (destval, imm); | |
6024 | if (rh != 7) | |
6025 | store_data_long(destoffset, destval); | |
6026 | } | |
6027 | else { | |
6028 | u16 destval, imm; | |
6029 | ||
6030 | DECODE_PRINTF("WORD PTR "); | |
6031 | destoffset = decode_rm00_address(rl); | |
6032 | destval = fetch_data_word(destoffset); | |
6033 | imm = (s8) fetch_byte_imm(); | |
6034 | DECODE_PRINTF2(",%x\n", imm); | |
6035 | TRACE_AND_STEP(); | |
6036 | destval = (*opc83_word_operation[rh]) (destval, imm); | |
6037 | if (rh != 7) | |
6038 | store_data_word(destoffset, destval); | |
6039 | } | |
6040 | break; | |
6041 | case 1: | |
6042 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
6043 | u32 destval, imm; | |
6044 | ||
6045 | DECODE_PRINTF("DWORD PTR "); | |
6046 | destoffset = decode_rm01_address(rl); | |
6047 | destval = fetch_data_long(destoffset); | |
6048 | imm = (s8) fetch_byte_imm(); | |
6049 | DECODE_PRINTF2(",%x\n", imm); | |
6050 | TRACE_AND_STEP(); | |
6051 | destval = (*opc83_long_operation[rh]) (destval, imm); | |
6052 | if (rh != 7) | |
6053 | store_data_long(destoffset, destval); | |
6054 | } | |
6055 | else { | |
6056 | u16 destval, imm; | |
6057 | ||
6058 | DECODE_PRINTF("WORD PTR "); | |
6059 | destoffset = decode_rm01_address(rl); | |
6060 | destval = fetch_data_word(destoffset); | |
6061 | imm = (s8) fetch_byte_imm(); | |
6062 | DECODE_PRINTF2(",%x\n", imm); | |
6063 | TRACE_AND_STEP(); | |
6064 | destval = (*opc83_word_operation[rh]) (destval, imm); | |
6065 | if (rh != 7) | |
6066 | store_data_word(destoffset, destval); | |
6067 | } | |
6068 | break; | |
6069 | case 2: | |
6070 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
6071 | u32 destval, imm; | |
6072 | ||
6073 | DECODE_PRINTF("DWORD PTR "); | |
6074 | destoffset = decode_rm10_address(rl); | |
6075 | destval = fetch_data_long(destoffset); | |
6076 | imm = (s8) fetch_byte_imm(); | |
6077 | DECODE_PRINTF2(",%x\n", imm); | |
6078 | TRACE_AND_STEP(); | |
6079 | destval = (*opc83_long_operation[rh]) (destval, imm); | |
6080 | if (rh != 7) | |
6081 | store_data_long(destoffset, destval); | |
6082 | } | |
6083 | else { | |
6084 | u16 destval, imm; | |
6085 | ||
6086 | DECODE_PRINTF("WORD PTR "); | |
6087 | destoffset = decode_rm10_address(rl); | |
6088 | destval = fetch_data_word(destoffset); | |
6089 | imm = (s8) fetch_byte_imm(); | |
6090 | DECODE_PRINTF2(",%x\n", imm); | |
6091 | TRACE_AND_STEP(); | |
6092 | destval = (*opc83_word_operation[rh]) (destval, imm); | |
6093 | if (rh != 7) | |
6094 | store_data_word(destoffset, destval); | |
6095 | } | |
6096 | break; | |
6097 | case 3: /* register to register */ | |
6098 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
6099 | u32 *destreg; | |
6100 | u32 destval, imm; | |
6101 | ||
6102 | destreg = DECODE_RM_LONG_REGISTER(rl); | |
6103 | imm = (s8) fetch_byte_imm(); | |
6104 | DECODE_PRINTF2(",%x\n", imm); | |
6105 | TRACE_AND_STEP(); | |
6106 | destval = (*opc83_long_operation[rh]) (*destreg, imm); | |
6107 | if (rh != 7) | |
6108 | *destreg = destval; | |
6109 | } | |
6110 | else { | |
6111 | u16 *destreg; | |
6112 | u16 destval, imm; | |
6113 | ||
6114 | destreg = DECODE_RM_WORD_REGISTER(rl); | |
6115 | imm = (s8) fetch_byte_imm(); | |
6116 | DECODE_PRINTF2(",%x\n", imm); | |
6117 | TRACE_AND_STEP(); | |
6118 | destval = (*opc83_word_operation[rh]) (*destreg, imm); | |
6119 | if (rh != 7) | |
6120 | *destreg = destval; | |
6121 | } | |
6122 | break; | |
6123 | } | |
6124 | DECODE_CLEAR_SEGOVR(); | |
6125 | END_OF_INSTR(); | |
6126 | } | |
6127 | ||
6128 | /**************************************************************************** | |
6129 | REMARKS: | |
6130 | Handles opcode 0x84 | |
6131 | ****************************************************************************/ | |
6132 | static void | |
6133 | x86emuOp_test_byte_RM_R(u8 X86EMU_UNUSED(op1)) | |
6134 | { | |
6135 | int mod, rl, rh; | |
6136 | u8 *destreg, *srcreg; | |
6137 | uint destoffset; | |
6138 | u8 destval; | |
6139 | ||
6140 | START_OF_INSTR(); | |
6141 | DECODE_PRINTF("TEST\t"); | |
6142 | FETCH_DECODE_MODRM(mod, rh, rl); | |
6143 | switch (mod) { | |
6144 | case 0: | |
6145 | destoffset = decode_rm00_address(rl); | |
6146 | DECODE_PRINTF(","); | |
6147 | destval = fetch_data_byte(destoffset); | |
6148 | srcreg = DECODE_RM_BYTE_REGISTER(rh); | |
6149 | DECODE_PRINTF("\n"); | |
6150 | TRACE_AND_STEP(); | |
6151 | test_byte(destval, *srcreg); | |
6152 | break; | |
6153 | case 1: | |
6154 | destoffset = decode_rm01_address(rl); | |
6155 | DECODE_PRINTF(","); | |
6156 | destval = fetch_data_byte(destoffset); | |
6157 | srcreg = DECODE_RM_BYTE_REGISTER(rh); | |
6158 | DECODE_PRINTF("\n"); | |
6159 | TRACE_AND_STEP(); | |
6160 | test_byte(destval, *srcreg); | |
6161 | break; | |
6162 | case 2: | |
6163 | destoffset = decode_rm10_address(rl); | |
6164 | DECODE_PRINTF(","); | |
6165 | destval = fetch_data_byte(destoffset); | |
6166 | srcreg = DECODE_RM_BYTE_REGISTER(rh); | |
6167 | DECODE_PRINTF("\n"); | |
6168 | TRACE_AND_STEP(); | |
6169 | test_byte(destval, *srcreg); | |
6170 | break; | |
6171 | case 3: /* register to register */ | |
6172 | destreg = DECODE_RM_BYTE_REGISTER(rl); | |
6173 | DECODE_PRINTF(","); | |
6174 | srcreg = DECODE_RM_BYTE_REGISTER(rh); | |
6175 | DECODE_PRINTF("\n"); | |
6176 | TRACE_AND_STEP(); | |
6177 | test_byte(*destreg, *srcreg); | |
6178 | break; | |
6179 | } | |
6180 | DECODE_CLEAR_SEGOVR(); | |
6181 | END_OF_INSTR(); | |
6182 | } | |
6183 | ||
6184 | /**************************************************************************** | |
6185 | REMARKS: | |
6186 | Handles opcode 0x85 | |
6187 | ****************************************************************************/ | |
6188 | static void | |
6189 | x86emuOp_test_word_RM_R(u8 X86EMU_UNUSED(op1)) | |
6190 | { | |
6191 | int mod, rl, rh; | |
6192 | uint destoffset; | |
6193 | ||
6194 | START_OF_INSTR(); | |
6195 | DECODE_PRINTF("TEST\t"); | |
6196 | FETCH_DECODE_MODRM(mod, rh, rl); | |
6197 | switch (mod) { | |
6198 | case 0: | |
6199 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
6200 | u32 destval; | |
6201 | u32 *srcreg; | |
6202 | ||
6203 | destoffset = decode_rm00_address(rl); | |
6204 | DECODE_PRINTF(","); | |
6205 | destval = fetch_data_long(destoffset); | |
6206 | srcreg = DECODE_RM_LONG_REGISTER(rh); | |
6207 | DECODE_PRINTF("\n"); | |
6208 | TRACE_AND_STEP(); | |
6209 | test_long(destval, *srcreg); | |
6210 | } | |
6211 | else { | |
6212 | u16 destval; | |
6213 | u16 *srcreg; | |
6214 | ||
6215 | destoffset = decode_rm00_address(rl); | |
6216 | DECODE_PRINTF(","); | |
6217 | destval = fetch_data_word(destoffset); | |
6218 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
6219 | DECODE_PRINTF("\n"); | |
6220 | TRACE_AND_STEP(); | |
6221 | test_word(destval, *srcreg); | |
6222 | } | |
6223 | break; | |
6224 | case 1: | |
6225 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
6226 | u32 destval; | |
6227 | u32 *srcreg; | |
6228 | ||
6229 | destoffset = decode_rm01_address(rl); | |
6230 | DECODE_PRINTF(","); | |
6231 | destval = fetch_data_long(destoffset); | |
6232 | srcreg = DECODE_RM_LONG_REGISTER(rh); | |
6233 | DECODE_PRINTF("\n"); | |
6234 | TRACE_AND_STEP(); | |
6235 | test_long(destval, *srcreg); | |
6236 | } | |
6237 | else { | |
6238 | u16 destval; | |
6239 | u16 *srcreg; | |
6240 | ||
6241 | destoffset = decode_rm01_address(rl); | |
6242 | DECODE_PRINTF(","); | |
6243 | destval = fetch_data_word(destoffset); | |
6244 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
6245 | DECODE_PRINTF("\n"); | |
6246 | TRACE_AND_STEP(); | |
6247 | test_word(destval, *srcreg); | |
6248 | } | |
6249 | break; | |
6250 | case 2: | |
6251 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
6252 | u32 destval; | |
6253 | u32 *srcreg; | |
6254 | ||
6255 | destoffset = decode_rm10_address(rl); | |
6256 | DECODE_PRINTF(","); | |
6257 | destval = fetch_data_long(destoffset); | |
6258 | srcreg = DECODE_RM_LONG_REGISTER(rh); | |
6259 | DECODE_PRINTF("\n"); | |
6260 | TRACE_AND_STEP(); | |
6261 | test_long(destval, *srcreg); | |
6262 | } | |
6263 | else { | |
6264 | u16 destval; | |
6265 | u16 *srcreg; | |
6266 | ||
6267 | destoffset = decode_rm10_address(rl); | |
6268 | DECODE_PRINTF(","); | |
6269 | destval = fetch_data_word(destoffset); | |
6270 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
6271 | DECODE_PRINTF("\n"); | |
6272 | TRACE_AND_STEP(); | |
6273 | test_word(destval, *srcreg); | |
6274 | } | |
6275 | break; | |
6276 | case 3: /* register to register */ | |
6277 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
6278 | u32 *destreg, *srcreg; | |
6279 | ||
6280 | destreg = DECODE_RM_LONG_REGISTER(rl); | |
6281 | DECODE_PRINTF(","); | |
6282 | srcreg = DECODE_RM_LONG_REGISTER(rh); | |
6283 | DECODE_PRINTF("\n"); | |
6284 | TRACE_AND_STEP(); | |
6285 | test_long(*destreg, *srcreg); | |
6286 | } | |
6287 | else { | |
6288 | u16 *destreg, *srcreg; | |
6289 | ||
6290 | destreg = DECODE_RM_WORD_REGISTER(rl); | |
6291 | DECODE_PRINTF(","); | |
6292 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
6293 | DECODE_PRINTF("\n"); | |
6294 | TRACE_AND_STEP(); | |
6295 | test_word(*destreg, *srcreg); | |
6296 | } | |
6297 | break; | |
6298 | } | |
6299 | DECODE_CLEAR_SEGOVR(); | |
6300 | END_OF_INSTR(); | |
6301 | } | |
6302 | ||
6303 | /**************************************************************************** | |
6304 | REMARKS: | |
6305 | Handles opcode 0x86 | |
6306 | ****************************************************************************/ | |
6307 | static void | |
6308 | x86emuOp_xchg_byte_RM_R(u8 X86EMU_UNUSED(op1)) | |
6309 | { | |
6310 | int mod, rl, rh; | |
6311 | u8 *destreg, *srcreg; | |
6312 | uint destoffset; | |
6313 | u8 destval; | |
6314 | u8 tmp; | |
6315 | ||
6316 | START_OF_INSTR(); | |
6317 | DECODE_PRINTF("XCHG\t"); | |
6318 | FETCH_DECODE_MODRM(mod, rh, rl); | |
6319 | switch (mod) { | |
6320 | case 0: | |
6321 | destoffset = decode_rm00_address(rl); | |
6322 | DECODE_PRINTF(","); | |
6323 | destval = fetch_data_byte(destoffset); | |
6324 | srcreg = DECODE_RM_BYTE_REGISTER(rh); | |
6325 | DECODE_PRINTF("\n"); | |
6326 | TRACE_AND_STEP(); | |
6327 | tmp = *srcreg; | |
6328 | *srcreg = destval; | |
6329 | destval = tmp; | |
6330 | store_data_byte(destoffset, destval); | |
6331 | break; | |
6332 | case 1: | |
6333 | destoffset = decode_rm01_address(rl); | |
6334 | DECODE_PRINTF(","); | |
6335 | destval = fetch_data_byte(destoffset); | |
6336 | srcreg = DECODE_RM_BYTE_REGISTER(rh); | |
6337 | DECODE_PRINTF("\n"); | |
6338 | TRACE_AND_STEP(); | |
6339 | tmp = *srcreg; | |
6340 | *srcreg = destval; | |
6341 | destval = tmp; | |
6342 | store_data_byte(destoffset, destval); | |
6343 | break; | |
6344 | case 2: | |
6345 | destoffset = decode_rm10_address(rl); | |
6346 | DECODE_PRINTF(","); | |
6347 | destval = fetch_data_byte(destoffset); | |
6348 | srcreg = DECODE_RM_BYTE_REGISTER(rh); | |
6349 | DECODE_PRINTF("\n"); | |
6350 | TRACE_AND_STEP(); | |
6351 | tmp = *srcreg; | |
6352 | *srcreg = destval; | |
6353 | destval = tmp; | |
6354 | store_data_byte(destoffset, destval); | |
6355 | break; | |
6356 | case 3: /* register to register */ | |
6357 | destreg = DECODE_RM_BYTE_REGISTER(rl); | |
6358 | DECODE_PRINTF(","); | |
6359 | srcreg = DECODE_RM_BYTE_REGISTER(rh); | |
6360 | DECODE_PRINTF("\n"); | |
6361 | TRACE_AND_STEP(); | |
6362 | tmp = *srcreg; | |
6363 | *srcreg = *destreg; | |
6364 | *destreg = tmp; | |
6365 | break; | |
6366 | } | |
6367 | DECODE_CLEAR_SEGOVR(); | |
6368 | END_OF_INSTR(); | |
6369 | } | |
6370 | ||
6371 | /**************************************************************************** | |
6372 | REMARKS: | |
6373 | Handles opcode 0x87 | |
6374 | ****************************************************************************/ | |
6375 | static void | |
6376 | x86emuOp_xchg_word_RM_R(u8 X86EMU_UNUSED(op1)) | |
6377 | { | |
6378 | int mod, rl, rh; | |
6379 | uint destoffset; | |
6380 | ||
6381 | START_OF_INSTR(); | |
6382 | DECODE_PRINTF("XCHG\t"); | |
6383 | FETCH_DECODE_MODRM(mod, rh, rl); | |
6384 | switch (mod) { | |
6385 | case 0: | |
6386 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
6387 | u32 *srcreg; | |
6388 | u32 destval, tmp; | |
6389 | ||
6390 | destoffset = decode_rm00_address(rl); | |
6391 | DECODE_PRINTF(","); | |
6392 | destval = fetch_data_long(destoffset); | |
6393 | srcreg = DECODE_RM_LONG_REGISTER(rh); | |
6394 | DECODE_PRINTF("\n"); | |
6395 | TRACE_AND_STEP(); | |
6396 | tmp = *srcreg; | |
6397 | *srcreg = destval; | |
6398 | destval = tmp; | |
6399 | store_data_long(destoffset, destval); | |
6400 | } | |
6401 | else { | |
6402 | u16 *srcreg; | |
6403 | u16 destval, tmp; | |
6404 | ||
6405 | destoffset = decode_rm00_address(rl); | |
6406 | DECODE_PRINTF(","); | |
6407 | destval = fetch_data_word(destoffset); | |
6408 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
6409 | DECODE_PRINTF("\n"); | |
6410 | TRACE_AND_STEP(); | |
6411 | tmp = *srcreg; | |
6412 | *srcreg = destval; | |
6413 | destval = tmp; | |
6414 | store_data_word(destoffset, destval); | |
6415 | } | |
6416 | break; | |
6417 | case 1: | |
6418 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
6419 | u32 *srcreg; | |
6420 | u32 destval, tmp; | |
6421 | ||
6422 | destoffset = decode_rm01_address(rl); | |
6423 | DECODE_PRINTF(","); | |
6424 | destval = fetch_data_long(destoffset); | |
6425 | srcreg = DECODE_RM_LONG_REGISTER(rh); | |
6426 | DECODE_PRINTF("\n"); | |
6427 | TRACE_AND_STEP(); | |
6428 | tmp = *srcreg; | |
6429 | *srcreg = destval; | |
6430 | destval = tmp; | |
6431 | store_data_long(destoffset, destval); | |
6432 | } | |
6433 | else { | |
6434 | u16 *srcreg; | |
6435 | u16 destval, tmp; | |
6436 | ||
6437 | destoffset = decode_rm01_address(rl); | |
6438 | DECODE_PRINTF(","); | |
6439 | destval = fetch_data_word(destoffset); | |
6440 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
6441 | DECODE_PRINTF("\n"); | |
6442 | TRACE_AND_STEP(); | |
6443 | tmp = *srcreg; | |
6444 | *srcreg = destval; | |
6445 | destval = tmp; | |
6446 | store_data_word(destoffset, destval); | |
6447 | } | |
6448 | break; | |
6449 | case 2: | |
6450 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
6451 | u32 *srcreg; | |
6452 | u32 destval, tmp; | |
6453 | ||
6454 | destoffset = decode_rm10_address(rl); | |
6455 | DECODE_PRINTF(","); | |
6456 | destval = fetch_data_long(destoffset); | |
6457 | srcreg = DECODE_RM_LONG_REGISTER(rh); | |
6458 | DECODE_PRINTF("\n"); | |
6459 | TRACE_AND_STEP(); | |
6460 | tmp = *srcreg; | |
6461 | *srcreg = destval; | |
6462 | destval = tmp; | |
6463 | store_data_long(destoffset, destval); | |
6464 | } | |
6465 | else { | |
6466 | u16 *srcreg; | |
6467 | u16 destval, tmp; | |
6468 | ||
6469 | destoffset = decode_rm10_address(rl); | |
6470 | DECODE_PRINTF(","); | |
6471 | destval = fetch_data_word(destoffset); | |
6472 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
6473 | DECODE_PRINTF("\n"); | |
6474 | TRACE_AND_STEP(); | |
6475 | tmp = *srcreg; | |
6476 | *srcreg = destval; | |
6477 | destval = tmp; | |
6478 | store_data_word(destoffset, destval); | |
6479 | } | |
6480 | break; | |
6481 | case 3: /* register to register */ | |
6482 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
6483 | u32 *destreg, *srcreg; | |
6484 | u32 tmp; | |
6485 | ||
6486 | destreg = DECODE_RM_LONG_REGISTER(rl); | |
6487 | DECODE_PRINTF(","); | |
6488 | srcreg = DECODE_RM_LONG_REGISTER(rh); | |
6489 | DECODE_PRINTF("\n"); | |
6490 | TRACE_AND_STEP(); | |
6491 | tmp = *srcreg; | |
6492 | *srcreg = *destreg; | |
6493 | *destreg = tmp; | |
6494 | } | |
6495 | else { | |
6496 | u16 *destreg, *srcreg; | |
6497 | u16 tmp; | |
6498 | ||
6499 | destreg = DECODE_RM_WORD_REGISTER(rl); | |
6500 | DECODE_PRINTF(","); | |
6501 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
6502 | DECODE_PRINTF("\n"); | |
6503 | TRACE_AND_STEP(); | |
6504 | tmp = *srcreg; | |
6505 | *srcreg = *destreg; | |
6506 | *destreg = tmp; | |
6507 | } | |
6508 | break; | |
6509 | } | |
6510 | DECODE_CLEAR_SEGOVR(); | |
6511 | END_OF_INSTR(); | |
6512 | } | |
6513 | ||
6514 | /**************************************************************************** | |
6515 | REMARKS: | |
6516 | Handles opcode 0x88 | |
6517 | ****************************************************************************/ | |
6518 | static void | |
6519 | x86emuOp_mov_byte_RM_R(u8 X86EMU_UNUSED(op1)) | |
6520 | { | |
6521 | int mod, rl, rh; | |
6522 | u8 *destreg, *srcreg; | |
6523 | uint destoffset; | |
6524 | ||
6525 | START_OF_INSTR(); | |
6526 | DECODE_PRINTF("MOV\t"); | |
6527 | FETCH_DECODE_MODRM(mod, rh, rl); | |
6528 | switch (mod) { | |
6529 | case 0: | |
6530 | destoffset = decode_rm00_address(rl); | |
6531 | DECODE_PRINTF(","); | |
6532 | srcreg = DECODE_RM_BYTE_REGISTER(rh); | |
6533 | DECODE_PRINTF("\n"); | |
6534 | TRACE_AND_STEP(); | |
6535 | store_data_byte(destoffset, *srcreg); | |
6536 | break; | |
6537 | case 1: | |
6538 | destoffset = decode_rm01_address(rl); | |
6539 | DECODE_PRINTF(","); | |
6540 | srcreg = DECODE_RM_BYTE_REGISTER(rh); | |
6541 | DECODE_PRINTF("\n"); | |
6542 | TRACE_AND_STEP(); | |
6543 | store_data_byte(destoffset, *srcreg); | |
6544 | break; | |
6545 | case 2: | |
6546 | destoffset = decode_rm10_address(rl); | |
6547 | DECODE_PRINTF(","); | |
6548 | srcreg = DECODE_RM_BYTE_REGISTER(rh); | |
6549 | DECODE_PRINTF("\n"); | |
6550 | TRACE_AND_STEP(); | |
6551 | store_data_byte(destoffset, *srcreg); | |
6552 | break; | |
6553 | case 3: /* register to register */ | |
6554 | destreg = DECODE_RM_BYTE_REGISTER(rl); | |
6555 | DECODE_PRINTF(","); | |
6556 | srcreg = DECODE_RM_BYTE_REGISTER(rh); | |
6557 | DECODE_PRINTF("\n"); | |
6558 | TRACE_AND_STEP(); | |
6559 | *destreg = *srcreg; | |
6560 | break; | |
6561 | } | |
6562 | DECODE_CLEAR_SEGOVR(); | |
6563 | END_OF_INSTR(); | |
6564 | } | |
6565 | ||
6566 | /**************************************************************************** | |
6567 | REMARKS: | |
6568 | Handles opcode 0x89 | |
6569 | ****************************************************************************/ | |
6570 | static void | |
6571 | x86emuOp_mov_word_RM_R(u8 X86EMU_UNUSED(op1)) | |
6572 | { | |
6573 | int mod, rl, rh; | |
6574 | u32 destoffset; | |
6575 | ||
6576 | START_OF_INSTR(); | |
6577 | DECODE_PRINTF("MOV\t"); | |
6578 | FETCH_DECODE_MODRM(mod, rh, rl); | |
6579 | switch (mod) { | |
6580 | case 0: | |
6581 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
6582 | u32 *srcreg; | |
6583 | ||
6584 | destoffset = decode_rm00_address(rl); | |
6585 | DECODE_PRINTF(","); | |
6586 | srcreg = DECODE_RM_LONG_REGISTER(rh); | |
6587 | DECODE_PRINTF("\n"); | |
6588 | TRACE_AND_STEP(); | |
6589 | store_data_long(destoffset, *srcreg); | |
6590 | } | |
6591 | else { | |
6592 | u16 *srcreg; | |
6593 | ||
6594 | destoffset = decode_rm00_address(rl); | |
6595 | DECODE_PRINTF(","); | |
6596 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
6597 | DECODE_PRINTF("\n"); | |
6598 | TRACE_AND_STEP(); | |
6599 | store_data_word(destoffset, *srcreg); | |
6600 | } | |
6601 | break; | |
6602 | case 1: | |
6603 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
6604 | u32 *srcreg; | |
6605 | ||
6606 | destoffset = decode_rm01_address(rl); | |
6607 | DECODE_PRINTF(","); | |
6608 | srcreg = DECODE_RM_LONG_REGISTER(rh); | |
6609 | DECODE_PRINTF("\n"); | |
6610 | TRACE_AND_STEP(); | |
6611 | store_data_long(destoffset, *srcreg); | |
6612 | } | |
6613 | else { | |
6614 | u16 *srcreg; | |
6615 | ||
6616 | destoffset = decode_rm01_address(rl); | |
6617 | DECODE_PRINTF(","); | |
6618 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
6619 | DECODE_PRINTF("\n"); | |
6620 | TRACE_AND_STEP(); | |
6621 | store_data_word(destoffset, *srcreg); | |
6622 | } | |
6623 | break; | |
6624 | case 2: | |
6625 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
6626 | u32 *srcreg; | |
6627 | ||
6628 | destoffset = decode_rm10_address(rl); | |
6629 | DECODE_PRINTF(","); | |
6630 | srcreg = DECODE_RM_LONG_REGISTER(rh); | |
6631 | DECODE_PRINTF("\n"); | |
6632 | TRACE_AND_STEP(); | |
6633 | store_data_long(destoffset, *srcreg); | |
6634 | } | |
6635 | else { | |
6636 | u16 *srcreg; | |
6637 | ||
6638 | destoffset = decode_rm10_address(rl); | |
6639 | DECODE_PRINTF(","); | |
6640 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
6641 | DECODE_PRINTF("\n"); | |
6642 | TRACE_AND_STEP(); | |
6643 | store_data_word(destoffset, *srcreg); | |
6644 | } | |
6645 | break; | |
6646 | case 3: /* register to register */ | |
6647 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
6648 | u32 *destreg, *srcreg; | |
6649 | ||
6650 | destreg = DECODE_RM_LONG_REGISTER(rl); | |
6651 | DECODE_PRINTF(","); | |
6652 | srcreg = DECODE_RM_LONG_REGISTER(rh); | |
6653 | DECODE_PRINTF("\n"); | |
6654 | TRACE_AND_STEP(); | |
6655 | *destreg = *srcreg; | |
6656 | } | |
6657 | else { | |
6658 | u16 *destreg, *srcreg; | |
6659 | ||
6660 | destreg = DECODE_RM_WORD_REGISTER(rl); | |
6661 | DECODE_PRINTF(","); | |
6662 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
6663 | DECODE_PRINTF("\n"); | |
6664 | TRACE_AND_STEP(); | |
6665 | *destreg = *srcreg; | |
6666 | } | |
6667 | break; | |
6668 | } | |
6669 | DECODE_CLEAR_SEGOVR(); | |
6670 | END_OF_INSTR(); | |
6671 | } | |
6672 | ||
6673 | /**************************************************************************** | |
6674 | REMARKS: | |
6675 | Handles opcode 0x8a | |
6676 | ****************************************************************************/ | |
6677 | static void | |
6678 | x86emuOp_mov_byte_R_RM(u8 X86EMU_UNUSED(op1)) | |
6679 | { | |
6680 | int mod, rl, rh; | |
6681 | u8 *destreg, *srcreg; | |
6682 | uint srcoffset; | |
6683 | u8 srcval; | |
6684 | ||
6685 | START_OF_INSTR(); | |
6686 | DECODE_PRINTF("MOV\t"); | |
6687 | FETCH_DECODE_MODRM(mod, rh, rl); | |
6688 | switch (mod) { | |
6689 | case 0: | |
6690 | destreg = DECODE_RM_BYTE_REGISTER(rh); | |
6691 | DECODE_PRINTF(","); | |
6692 | srcoffset = decode_rm00_address(rl); | |
6693 | srcval = fetch_data_byte(srcoffset); | |
6694 | DECODE_PRINTF("\n"); | |
6695 | TRACE_AND_STEP(); | |
6696 | *destreg = srcval; | |
6697 | break; | |
6698 | case 1: | |
6699 | destreg = DECODE_RM_BYTE_REGISTER(rh); | |
6700 | DECODE_PRINTF(","); | |
6701 | srcoffset = decode_rm01_address(rl); | |
6702 | srcval = fetch_data_byte(srcoffset); | |
6703 | DECODE_PRINTF("\n"); | |
6704 | TRACE_AND_STEP(); | |
6705 | *destreg = srcval; | |
6706 | break; | |
6707 | case 2: | |
6708 | destreg = DECODE_RM_BYTE_REGISTER(rh); | |
6709 | DECODE_PRINTF(","); | |
6710 | srcoffset = decode_rm10_address(rl); | |
6711 | srcval = fetch_data_byte(srcoffset); | |
6712 | DECODE_PRINTF("\n"); | |
6713 | TRACE_AND_STEP(); | |
6714 | *destreg = srcval; | |
6715 | break; | |
6716 | case 3: /* register to register */ | |
6717 | destreg = DECODE_RM_BYTE_REGISTER(rh); | |
6718 | DECODE_PRINTF(","); | |
6719 | srcreg = DECODE_RM_BYTE_REGISTER(rl); | |
6720 | DECODE_PRINTF("\n"); | |
6721 | TRACE_AND_STEP(); | |
6722 | *destreg = *srcreg; | |
6723 | break; | |
6724 | } | |
6725 | DECODE_CLEAR_SEGOVR(); | |
6726 | END_OF_INSTR(); | |
6727 | } | |
6728 | ||
6729 | /**************************************************************************** | |
6730 | REMARKS: | |
6731 | Handles opcode 0x8b | |
6732 | ****************************************************************************/ | |
6733 | static void | |
6734 | x86emuOp_mov_word_R_RM(u8 X86EMU_UNUSED(op1)) | |
6735 | { | |
6736 | int mod, rl, rh; | |
6737 | uint srcoffset; | |
6738 | ||
6739 | START_OF_INSTR(); | |
6740 | DECODE_PRINTF("MOV\t"); | |
6741 | FETCH_DECODE_MODRM(mod, rh, rl); | |
6742 | switch (mod) { | |
6743 | case 0: | |
6744 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
6745 | u32 *destreg; | |
6746 | u32 srcval; | |
6747 | ||
6748 | destreg = DECODE_RM_LONG_REGISTER(rh); | |
6749 | DECODE_PRINTF(","); | |
6750 | srcoffset = decode_rm00_address(rl); | |
6751 | srcval = fetch_data_long(srcoffset); | |
6752 | DECODE_PRINTF("\n"); | |
6753 | TRACE_AND_STEP(); | |
6754 | *destreg = srcval; | |
6755 | } | |
6756 | else { | |
6757 | u16 *destreg; | |
6758 | u16 srcval; | |
6759 | ||
6760 | destreg = DECODE_RM_WORD_REGISTER(rh); | |
6761 | DECODE_PRINTF(","); | |
6762 | srcoffset = decode_rm00_address(rl); | |
6763 | srcval = fetch_data_word(srcoffset); | |
6764 | DECODE_PRINTF("\n"); | |
6765 | TRACE_AND_STEP(); | |
6766 | *destreg = srcval; | |
6767 | } | |
6768 | break; | |
6769 | case 1: | |
6770 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
6771 | u32 *destreg; | |
6772 | u32 srcval; | |
6773 | ||
6774 | destreg = DECODE_RM_LONG_REGISTER(rh); | |
6775 | DECODE_PRINTF(","); | |
6776 | srcoffset = decode_rm01_address(rl); | |
6777 | srcval = fetch_data_long(srcoffset); | |
6778 | DECODE_PRINTF("\n"); | |
6779 | TRACE_AND_STEP(); | |
6780 | *destreg = srcval; | |
6781 | } | |
6782 | else { | |
6783 | u16 *destreg; | |
6784 | u16 srcval; | |
6785 | ||
6786 | destreg = DECODE_RM_WORD_REGISTER(rh); | |
6787 | DECODE_PRINTF(","); | |
6788 | srcoffset = decode_rm01_address(rl); | |
6789 | srcval = fetch_data_word(srcoffset); | |
6790 | DECODE_PRINTF("\n"); | |
6791 | TRACE_AND_STEP(); | |
6792 | *destreg = srcval; | |
6793 | } | |
6794 | break; | |
6795 | case 2: | |
6796 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
6797 | u32 *destreg; | |
6798 | u32 srcval; | |
6799 | ||
6800 | destreg = DECODE_RM_LONG_REGISTER(rh); | |
6801 | DECODE_PRINTF(","); | |
6802 | srcoffset = decode_rm10_address(rl); | |
6803 | srcval = fetch_data_long(srcoffset); | |
6804 | DECODE_PRINTF("\n"); | |
6805 | TRACE_AND_STEP(); | |
6806 | *destreg = srcval; | |
6807 | } | |
6808 | else { | |
6809 | u16 *destreg; | |
6810 | u16 srcval; | |
6811 | ||
6812 | destreg = DECODE_RM_WORD_REGISTER(rh); | |
6813 | DECODE_PRINTF(","); | |
6814 | srcoffset = decode_rm10_address(rl); | |
6815 | srcval = fetch_data_word(srcoffset); | |
6816 | DECODE_PRINTF("\n"); | |
6817 | TRACE_AND_STEP(); | |
6818 | *destreg = srcval; | |
6819 | } | |
6820 | break; | |
6821 | case 3: /* register to register */ | |
6822 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
6823 | u32 *destreg, *srcreg; | |
6824 | ||
6825 | destreg = DECODE_RM_LONG_REGISTER(rh); | |
6826 | DECODE_PRINTF(","); | |
6827 | srcreg = DECODE_RM_LONG_REGISTER(rl); | |
6828 | DECODE_PRINTF("\n"); | |
6829 | TRACE_AND_STEP(); | |
6830 | *destreg = *srcreg; | |
6831 | } | |
6832 | else { | |
6833 | u16 *destreg, *srcreg; | |
6834 | ||
6835 | destreg = DECODE_RM_WORD_REGISTER(rh); | |
6836 | DECODE_PRINTF(","); | |
6837 | srcreg = DECODE_RM_WORD_REGISTER(rl); | |
6838 | DECODE_PRINTF("\n"); | |
6839 | TRACE_AND_STEP(); | |
6840 | *destreg = *srcreg; | |
6841 | } | |
6842 | break; | |
6843 | } | |
6844 | DECODE_CLEAR_SEGOVR(); | |
6845 | END_OF_INSTR(); | |
6846 | } | |
6847 | ||
6848 | /**************************************************************************** | |
6849 | REMARKS: | |
6850 | Handles opcode 0x8c | |
6851 | ****************************************************************************/ | |
6852 | static void | |
6853 | x86emuOp_mov_word_RM_SR(u8 X86EMU_UNUSED(op1)) | |
6854 | { | |
6855 | int mod, rl, rh; | |
6856 | u16 *destreg, *srcreg; | |
6857 | uint destoffset; | |
6858 | u16 destval; | |
6859 | ||
6860 | START_OF_INSTR(); | |
6861 | DECODE_PRINTF("MOV\t"); | |
6862 | FETCH_DECODE_MODRM(mod, rh, rl); | |
6863 | switch (mod) { | |
6864 | case 0: | |
6865 | destoffset = decode_rm00_address(rl); | |
6866 | DECODE_PRINTF(","); | |
6867 | srcreg = decode_rm_seg_register(rh); | |
6868 | DECODE_PRINTF("\n"); | |
6869 | TRACE_AND_STEP(); | |
6870 | destval = *srcreg; | |
6871 | store_data_word(destoffset, destval); | |
6872 | break; | |
6873 | case 1: | |
6874 | destoffset = decode_rm01_address(rl); | |
6875 | DECODE_PRINTF(","); | |
6876 | srcreg = decode_rm_seg_register(rh); | |
6877 | DECODE_PRINTF("\n"); | |
6878 | TRACE_AND_STEP(); | |
6879 | destval = *srcreg; | |
6880 | store_data_word(destoffset, destval); | |
6881 | break; | |
6882 | case 2: | |
6883 | destoffset = decode_rm10_address(rl); | |
6884 | DECODE_PRINTF(","); | |
6885 | srcreg = decode_rm_seg_register(rh); | |
6886 | DECODE_PRINTF("\n"); | |
6887 | TRACE_AND_STEP(); | |
6888 | destval = *srcreg; | |
6889 | store_data_word(destoffset, destval); | |
6890 | break; | |
6891 | case 3: /* register to register */ | |
6892 | destreg = DECODE_RM_WORD_REGISTER(rl); | |
6893 | DECODE_PRINTF(","); | |
6894 | srcreg = decode_rm_seg_register(rh); | |
6895 | DECODE_PRINTF("\n"); | |
6896 | TRACE_AND_STEP(); | |
6897 | *destreg = *srcreg; | |
6898 | break; | |
6899 | } | |
6900 | DECODE_CLEAR_SEGOVR(); | |
6901 | END_OF_INSTR(); | |
6902 | } | |
6903 | ||
6904 | /**************************************************************************** | |
6905 | REMARKS: | |
6906 | Handles opcode 0x8d | |
6907 | ****************************************************************************/ | |
6908 | static void | |
6909 | x86emuOp_lea_word_R_M(u8 X86EMU_UNUSED(op1)) | |
6910 | { | |
6911 | int mod, rl, rh; | |
6912 | uint destoffset; | |
6913 | ||
6914 | START_OF_INSTR(); | |
6915 | DECODE_PRINTF("LEA\t"); | |
6916 | FETCH_DECODE_MODRM(mod, rh, rl); | |
6917 | switch (mod) { | |
6918 | case 0: | |
6919 | if (M.x86.mode & SYSMODE_PREFIX_ADDR) { | |
6920 | u32 *srcreg = DECODE_RM_LONG_REGISTER(rh); | |
6921 | ||
6922 | DECODE_PRINTF(","); | |
6923 | destoffset = decode_rm00_address(rl); | |
6924 | DECODE_PRINTF("\n"); | |
6925 | TRACE_AND_STEP(); | |
6926 | *srcreg = (u32) destoffset; | |
6927 | } | |
6928 | else { | |
6929 | u16 *srcreg = DECODE_RM_WORD_REGISTER(rh); | |
6930 | ||
6931 | DECODE_PRINTF(","); | |
6932 | destoffset = decode_rm00_address(rl); | |
6933 | DECODE_PRINTF("\n"); | |
6934 | TRACE_AND_STEP(); | |
6935 | *srcreg = (u16) destoffset; | |
6936 | } | |
6937 | break; | |
6938 | case 1: | |
6939 | if (M.x86.mode & SYSMODE_PREFIX_ADDR) { | |
6940 | u32 *srcreg = DECODE_RM_LONG_REGISTER(rh); | |
6941 | ||
6942 | DECODE_PRINTF(","); | |
6943 | destoffset = decode_rm01_address(rl); | |
6944 | DECODE_PRINTF("\n"); | |
6945 | TRACE_AND_STEP(); | |
6946 | *srcreg = (u32) destoffset; | |
6947 | } | |
6948 | else { | |
6949 | u16 *srcreg = DECODE_RM_WORD_REGISTER(rh); | |
6950 | ||
6951 | DECODE_PRINTF(","); | |
6952 | destoffset = decode_rm01_address(rl); | |
6953 | DECODE_PRINTF("\n"); | |
6954 | TRACE_AND_STEP(); | |
6955 | *srcreg = (u16) destoffset; | |
6956 | } | |
6957 | break; | |
6958 | case 2: | |
6959 | if (M.x86.mode & SYSMODE_PREFIX_ADDR) { | |
6960 | u32 *srcreg = DECODE_RM_LONG_REGISTER(rh); | |
6961 | ||
6962 | DECODE_PRINTF(","); | |
6963 | destoffset = decode_rm10_address(rl); | |
6964 | DECODE_PRINTF("\n"); | |
6965 | TRACE_AND_STEP(); | |
6966 | *srcreg = (u32) destoffset; | |
6967 | } | |
6968 | else { | |
6969 | u16 *srcreg = DECODE_RM_WORD_REGISTER(rh); | |
6970 | ||
6971 | DECODE_PRINTF(","); | |
6972 | destoffset = decode_rm10_address(rl); | |
6973 | DECODE_PRINTF("\n"); | |
6974 | TRACE_AND_STEP(); | |
6975 | *srcreg = (u16) destoffset; | |
6976 | } | |
6977 | break; | |
6978 | case 3: /* register to register */ | |
6979 | /* undefined. Do nothing. */ | |
6980 | break; | |
6981 | } | |
6982 | DECODE_CLEAR_SEGOVR(); | |
6983 | END_OF_INSTR(); | |
6984 | } | |
6985 | ||
6986 | /**************************************************************************** | |
6987 | REMARKS: | |
6988 | Handles opcode 0x8e | |
6989 | ****************************************************************************/ | |
6990 | static void | |
6991 | x86emuOp_mov_word_SR_RM(u8 X86EMU_UNUSED(op1)) | |
6992 | { | |
6993 | int mod, rl, rh; | |
6994 | u16 *destreg, *srcreg; | |
6995 | uint srcoffset; | |
6996 | u16 srcval; | |
6997 | ||
6998 | START_OF_INSTR(); | |
6999 | DECODE_PRINTF("MOV\t"); | |
7000 | FETCH_DECODE_MODRM(mod, rh, rl); | |
7001 | switch (mod) { | |
7002 | case 0: | |
7003 | destreg = decode_rm_seg_register(rh); | |
7004 | DECODE_PRINTF(","); | |
7005 | srcoffset = decode_rm00_address(rl); | |
7006 | srcval = fetch_data_word(srcoffset); | |
7007 | DECODE_PRINTF("\n"); | |
7008 | TRACE_AND_STEP(); | |
7009 | *destreg = srcval; | |
7010 | break; | |
7011 | case 1: | |
7012 | destreg = decode_rm_seg_register(rh); | |
7013 | DECODE_PRINTF(","); | |
7014 | srcoffset = decode_rm01_address(rl); | |
7015 | srcval = fetch_data_word(srcoffset); | |
7016 | DECODE_PRINTF("\n"); | |
7017 | TRACE_AND_STEP(); | |
7018 | *destreg = srcval; | |
7019 | break; | |
7020 | case 2: | |
7021 | destreg = decode_rm_seg_register(rh); | |
7022 | DECODE_PRINTF(","); | |
7023 | srcoffset = decode_rm10_address(rl); | |
7024 | srcval = fetch_data_word(srcoffset); | |
7025 | DECODE_PRINTF("\n"); | |
7026 | TRACE_AND_STEP(); | |
7027 | *destreg = srcval; | |
7028 | break; | |
7029 | case 3: /* register to register */ | |
7030 | destreg = decode_rm_seg_register(rh); | |
7031 | DECODE_PRINTF(","); | |
7032 | srcreg = DECODE_RM_WORD_REGISTER(rl); | |
7033 | DECODE_PRINTF("\n"); | |
7034 | TRACE_AND_STEP(); | |
7035 | *destreg = *srcreg; | |
7036 | break; | |
7037 | } | |
7038 | /* | |
7039 | * Clean up, and reset all the R_xSP pointers to the correct | |
7040 | * locations. This is about 3x too much overhead (doing all the | |
7041 | * segreg ptrs when only one is needed, but this instruction | |
7042 | * *cannot* be that common, and this isn't too much work anyway. | |
7043 | */ | |
7044 | DECODE_CLEAR_SEGOVR(); | |
7045 | END_OF_INSTR(); | |
7046 | } | |
7047 | ||
7048 | /**************************************************************************** | |
7049 | REMARKS: | |
7050 | Handles opcode 0x8f | |
7051 | ****************************************************************************/ | |
7052 | static void | |
7053 | x86emuOp_pop_RM(u8 X86EMU_UNUSED(op1)) | |
7054 | { | |
7055 | int mod, rl, rh; | |
7056 | uint destoffset; | |
7057 | ||
7058 | START_OF_INSTR(); | |
7059 | DECODE_PRINTF("POP\t"); | |
7060 | FETCH_DECODE_MODRM(mod, rh, rl); | |
7061 | if (rh != 0) { | |
7062 | DECODE_PRINTF("ILLEGAL DECODE OF OPCODE 8F\n"); | |
7063 | HALT_SYS(); | |
7064 | } | |
7065 | switch (mod) { | |
7066 | case 0: | |
7067 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
7068 | u32 destval; | |
7069 | ||
7070 | destoffset = decode_rm00_address(rl); | |
7071 | DECODE_PRINTF("\n"); | |
7072 | TRACE_AND_STEP(); | |
7073 | destval = pop_long(); | |
7074 | store_data_long(destoffset, destval); | |
7075 | } | |
7076 | else { | |
7077 | u16 destval; | |
7078 | ||
7079 | destoffset = decode_rm00_address(rl); | |
7080 | DECODE_PRINTF("\n"); | |
7081 | TRACE_AND_STEP(); | |
7082 | destval = pop_word(); | |
7083 | store_data_word(destoffset, destval); | |
7084 | } | |
7085 | break; | |
7086 | case 1: | |
7087 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
7088 | u32 destval; | |
7089 | ||
7090 | destoffset = decode_rm01_address(rl); | |
7091 | DECODE_PRINTF("\n"); | |
7092 | TRACE_AND_STEP(); | |
7093 | destval = pop_long(); | |
7094 | store_data_long(destoffset, destval); | |
7095 | } | |
7096 | else { | |
7097 | u16 destval; | |
7098 | ||
7099 | destoffset = decode_rm01_address(rl); | |
7100 | DECODE_PRINTF("\n"); | |
7101 | TRACE_AND_STEP(); | |
7102 | destval = pop_word(); | |
7103 | store_data_word(destoffset, destval); | |
7104 | } | |
7105 | break; | |
7106 | case 2: | |
7107 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
7108 | u32 destval; | |
7109 | ||
7110 | destoffset = decode_rm10_address(rl); | |
7111 | DECODE_PRINTF("\n"); | |
7112 | TRACE_AND_STEP(); | |
7113 | destval = pop_long(); | |
7114 | store_data_long(destoffset, destval); | |
7115 | } | |
7116 | else { | |
7117 | u16 destval; | |
7118 | ||
7119 | destoffset = decode_rm10_address(rl); | |
7120 | DECODE_PRINTF("\n"); | |
7121 | TRACE_AND_STEP(); | |
7122 | destval = pop_word(); | |
7123 | store_data_word(destoffset, destval); | |
7124 | } | |
7125 | break; | |
7126 | case 3: /* register to register */ | |
7127 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
7128 | u32 *destreg; | |
7129 | ||
7130 | destreg = DECODE_RM_LONG_REGISTER(rl); | |
7131 | DECODE_PRINTF("\n"); | |
7132 | TRACE_AND_STEP(); | |
7133 | *destreg = pop_long(); | |
7134 | } | |
7135 | else { | |
7136 | u16 *destreg; | |
7137 | ||
7138 | destreg = DECODE_RM_WORD_REGISTER(rl); | |
7139 | DECODE_PRINTF("\n"); | |
7140 | TRACE_AND_STEP(); | |
7141 | *destreg = pop_word(); | |
7142 | } | |
7143 | break; | |
7144 | } | |
7145 | DECODE_CLEAR_SEGOVR(); | |
7146 | END_OF_INSTR(); | |
7147 | } | |
7148 | ||
7149 | /**************************************************************************** | |
7150 | REMARKS: | |
7151 | Handles opcode 0x90 | |
7152 | ****************************************************************************/ | |
7153 | static void | |
7154 | x86emuOp_nop(u8 X86EMU_UNUSED(op1)) | |
7155 | { | |
7156 | START_OF_INSTR(); | |
7157 | DECODE_PRINTF("NOP\n"); | |
7158 | TRACE_AND_STEP(); | |
7159 | DECODE_CLEAR_SEGOVR(); | |
7160 | END_OF_INSTR(); | |
7161 | } | |
7162 | ||
7163 | /**************************************************************************** | |
7164 | REMARKS: | |
7165 | Handles opcode 0x91 | |
7166 | ****************************************************************************/ | |
7167 | static void | |
7168 | x86emuOp_xchg_word_AX_CX(u8 X86EMU_UNUSED(op1)) | |
7169 | { | |
7170 | u32 tmp; | |
7171 | ||
7172 | START_OF_INSTR(); | |
7173 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
7174 | DECODE_PRINTF("XCHG\tEAX,ECX\n"); | |
7175 | } | |
7176 | else { | |
7177 | DECODE_PRINTF("XCHG\tAX,CX\n"); | |
7178 | } | |
7179 | TRACE_AND_STEP(); | |
7180 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
7181 | tmp = M.x86.R_EAX; | |
7182 | M.x86.R_EAX = M.x86.R_ECX; | |
7183 | M.x86.R_ECX = tmp; | |
7184 | } | |
7185 | else { | |
7186 | tmp = M.x86.R_AX; | |
7187 | M.x86.R_AX = M.x86.R_CX; | |
7188 | M.x86.R_CX = (u16) tmp; | |
7189 | } | |
7190 | DECODE_CLEAR_SEGOVR(); | |
7191 | END_OF_INSTR(); | |
7192 | } | |
7193 | ||
7194 | /**************************************************************************** | |
7195 | REMARKS: | |
7196 | Handles opcode 0x92 | |
7197 | ****************************************************************************/ | |
7198 | static void | |
7199 | x86emuOp_xchg_word_AX_DX(u8 X86EMU_UNUSED(op1)) | |
7200 | { | |
7201 | u32 tmp; | |
7202 | ||
7203 | START_OF_INSTR(); | |
7204 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
7205 | DECODE_PRINTF("XCHG\tEAX,EDX\n"); | |
7206 | } | |
7207 | else { | |
7208 | DECODE_PRINTF("XCHG\tAX,DX\n"); | |
7209 | } | |
7210 | TRACE_AND_STEP(); | |
7211 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
7212 | tmp = M.x86.R_EAX; | |
7213 | M.x86.R_EAX = M.x86.R_EDX; | |
7214 | M.x86.R_EDX = tmp; | |
7215 | } | |
7216 | else { | |
7217 | tmp = M.x86.R_AX; | |
7218 | M.x86.R_AX = M.x86.R_DX; | |
7219 | M.x86.R_DX = (u16) tmp; | |
7220 | } | |
7221 | DECODE_CLEAR_SEGOVR(); | |
7222 | END_OF_INSTR(); | |
7223 | } | |
7224 | ||
7225 | /**************************************************************************** | |
7226 | REMARKS: | |
7227 | Handles opcode 0x93 | |
7228 | ****************************************************************************/ | |
7229 | static void | |
7230 | x86emuOp_xchg_word_AX_BX(u8 X86EMU_UNUSED(op1)) | |
7231 | { | |
7232 | u32 tmp; | |
7233 | ||
7234 | START_OF_INSTR(); | |
7235 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
7236 | DECODE_PRINTF("XCHG\tEAX,EBX\n"); | |
7237 | } | |
7238 | else { | |
7239 | DECODE_PRINTF("XCHG\tAX,BX\n"); | |
7240 | } | |
7241 | TRACE_AND_STEP(); | |
7242 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
7243 | tmp = M.x86.R_EAX; | |
7244 | M.x86.R_EAX = M.x86.R_EBX; | |
7245 | M.x86.R_EBX = tmp; | |
7246 | } | |
7247 | else { | |
7248 | tmp = M.x86.R_AX; | |
7249 | M.x86.R_AX = M.x86.R_BX; | |
7250 | M.x86.R_BX = (u16) tmp; | |
7251 | } | |
7252 | DECODE_CLEAR_SEGOVR(); | |
7253 | END_OF_INSTR(); | |
7254 | } | |
7255 | ||
7256 | /**************************************************************************** | |
7257 | REMARKS: | |
7258 | Handles opcode 0x94 | |
7259 | ****************************************************************************/ | |
7260 | static void | |
7261 | x86emuOp_xchg_word_AX_SP(u8 X86EMU_UNUSED(op1)) | |
7262 | { | |
7263 | u32 tmp; | |
7264 | ||
7265 | START_OF_INSTR(); | |
7266 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
7267 | DECODE_PRINTF("XCHG\tEAX,ESP\n"); | |
7268 | } | |
7269 | else { | |
7270 | DECODE_PRINTF("XCHG\tAX,SP\n"); | |
7271 | } | |
7272 | TRACE_AND_STEP(); | |
7273 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
7274 | tmp = M.x86.R_EAX; | |
7275 | M.x86.R_EAX = M.x86.R_ESP; | |
7276 | M.x86.R_ESP = tmp; | |
7277 | } | |
7278 | else { | |
7279 | tmp = M.x86.R_AX; | |
7280 | M.x86.R_AX = M.x86.R_SP; | |
7281 | M.x86.R_SP = (u16) tmp; | |
7282 | } | |
7283 | DECODE_CLEAR_SEGOVR(); | |
7284 | END_OF_INSTR(); | |
7285 | } | |
7286 | ||
7287 | /**************************************************************************** | |
7288 | REMARKS: | |
7289 | Handles opcode 0x95 | |
7290 | ****************************************************************************/ | |
7291 | static void | |
7292 | x86emuOp_xchg_word_AX_BP(u8 X86EMU_UNUSED(op1)) | |
7293 | { | |
7294 | u32 tmp; | |
7295 | ||
7296 | START_OF_INSTR(); | |
7297 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
7298 | DECODE_PRINTF("XCHG\tEAX,EBP\n"); | |
7299 | } | |
7300 | else { | |
7301 | DECODE_PRINTF("XCHG\tAX,BP\n"); | |
7302 | } | |
7303 | TRACE_AND_STEP(); | |
7304 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
7305 | tmp = M.x86.R_EAX; | |
7306 | M.x86.R_EAX = M.x86.R_EBP; | |
7307 | M.x86.R_EBP = tmp; | |
7308 | } | |
7309 | else { | |
7310 | tmp = M.x86.R_AX; | |
7311 | M.x86.R_AX = M.x86.R_BP; | |
7312 | M.x86.R_BP = (u16) tmp; | |
7313 | } | |
7314 | DECODE_CLEAR_SEGOVR(); | |
7315 | END_OF_INSTR(); | |
7316 | } | |
7317 | ||
7318 | /**************************************************************************** | |
7319 | REMARKS: | |
7320 | Handles opcode 0x96 | |
7321 | ****************************************************************************/ | |
7322 | static void | |
7323 | x86emuOp_xchg_word_AX_SI(u8 X86EMU_UNUSED(op1)) | |
7324 | { | |
7325 | u32 tmp; | |
7326 | ||
7327 | START_OF_INSTR(); | |
7328 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
7329 | DECODE_PRINTF("XCHG\tEAX,ESI\n"); | |
7330 | } | |
7331 | else { | |
7332 | DECODE_PRINTF("XCHG\tAX,SI\n"); | |
7333 | } | |
7334 | TRACE_AND_STEP(); | |
7335 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
7336 | tmp = M.x86.R_EAX; | |
7337 | M.x86.R_EAX = M.x86.R_ESI; | |
7338 | M.x86.R_ESI = tmp; | |
7339 | } | |
7340 | else { | |
7341 | tmp = M.x86.R_AX; | |
7342 | M.x86.R_AX = M.x86.R_SI; | |
7343 | M.x86.R_SI = (u16) tmp; | |
7344 | } | |
7345 | DECODE_CLEAR_SEGOVR(); | |
7346 | END_OF_INSTR(); | |
7347 | } | |
7348 | ||
7349 | /**************************************************************************** | |
7350 | REMARKS: | |
7351 | Handles opcode 0x97 | |
7352 | ****************************************************************************/ | |
7353 | static void | |
7354 | x86emuOp_xchg_word_AX_DI(u8 X86EMU_UNUSED(op1)) | |
7355 | { | |
7356 | u32 tmp; | |
7357 | ||
7358 | START_OF_INSTR(); | |
7359 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
7360 | DECODE_PRINTF("XCHG\tEAX,EDI\n"); | |
7361 | } | |
7362 | else { | |
7363 | DECODE_PRINTF("XCHG\tAX,DI\n"); | |
7364 | } | |
7365 | TRACE_AND_STEP(); | |
7366 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
7367 | tmp = M.x86.R_EAX; | |
7368 | M.x86.R_EAX = M.x86.R_EDI; | |
7369 | M.x86.R_EDI = tmp; | |
7370 | } | |
7371 | else { | |
7372 | tmp = M.x86.R_AX; | |
7373 | M.x86.R_AX = M.x86.R_DI; | |
7374 | M.x86.R_DI = (u16) tmp; | |
7375 | } | |
7376 | DECODE_CLEAR_SEGOVR(); | |
7377 | END_OF_INSTR(); | |
7378 | } | |
7379 | ||
7380 | /**************************************************************************** | |
7381 | REMARKS: | |
7382 | Handles opcode 0x98 | |
7383 | ****************************************************************************/ | |
7384 | static void | |
7385 | x86emuOp_cbw(u8 X86EMU_UNUSED(op1)) | |
7386 | { | |
7387 | START_OF_INSTR(); | |
7388 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
7389 | DECODE_PRINTF("CWDE\n"); | |
7390 | } | |
7391 | else { | |
7392 | DECODE_PRINTF("CBW\n"); | |
7393 | } | |
7394 | TRACE_AND_STEP(); | |
7395 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
7396 | if (M.x86.R_AX & 0x8000) { | |
7397 | M.x86.R_EAX |= 0xffff0000; | |
7398 | } | |
7399 | else { | |
7400 | M.x86.R_EAX &= 0x0000ffff; | |
7401 | } | |
7402 | } | |
7403 | else { | |
7404 | if (M.x86.R_AL & 0x80) { | |
7405 | M.x86.R_AH = 0xff; | |
7406 | } | |
7407 | else { | |
7408 | M.x86.R_AH = 0x0; | |
7409 | } | |
7410 | } | |
7411 | DECODE_CLEAR_SEGOVR(); | |
7412 | END_OF_INSTR(); | |
7413 | } | |
7414 | ||
7415 | /**************************************************************************** | |
7416 | REMARKS: | |
7417 | Handles opcode 0x99 | |
7418 | ****************************************************************************/ | |
7419 | static void | |
7420 | x86emuOp_cwd(u8 X86EMU_UNUSED(op1)) | |
7421 | { | |
7422 | START_OF_INSTR(); | |
7423 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
7424 | DECODE_PRINTF("CDQ\n"); | |
7425 | } | |
7426 | else { | |
7427 | DECODE_PRINTF("CWD\n"); | |
7428 | } | |
7429 | DECODE_PRINTF("CWD\n"); | |
7430 | TRACE_AND_STEP(); | |
7431 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
7432 | if (M.x86.R_EAX & 0x80000000) { | |
7433 | M.x86.R_EDX = 0xffffffff; | |
7434 | } | |
7435 | else { | |
7436 | M.x86.R_EDX = 0x0; | |
7437 | } | |
7438 | } | |
7439 | else { | |
7440 | if (M.x86.R_AX & 0x8000) { | |
7441 | M.x86.R_DX = 0xffff; | |
7442 | } | |
7443 | else { | |
7444 | M.x86.R_DX = 0x0; | |
7445 | } | |
7446 | } | |
7447 | DECODE_CLEAR_SEGOVR(); | |
7448 | END_OF_INSTR(); | |
7449 | } | |
7450 | ||
7451 | /**************************************************************************** | |
7452 | REMARKS: | |
7453 | Handles opcode 0x9a | |
7454 | ****************************************************************************/ | |
7455 | static void | |
7456 | x86emuOp_call_far_IMM(u8 X86EMU_UNUSED(op1)) | |
7457 | { | |
7458 | u32 farseg, faroff; | |
7459 | ||
7460 | START_OF_INSTR(); | |
7461 | DECODE_PRINTF("CALL\t"); | |
7462 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
7463 | faroff = fetch_long_imm(); | |
7464 | farseg = fetch_word_imm(); | |
7465 | } | |
7466 | else { | |
7467 | faroff = fetch_word_imm(); | |
7468 | farseg = fetch_word_imm(); | |
7469 | } | |
7470 | DECODE_PRINTF2("%04x:", farseg); | |
7471 | DECODE_PRINTF2("%04x\n", faroff); | |
7472 | CALL_TRACE(M.x86.saved_cs, M.x86.saved_ip, farseg, faroff, "FAR "); | |
7473 | ||
7474 | /* XXX | |
7475 | * | |
7476 | * Hooked interrupt vectors calling into our "BIOS" will cause | |
7477 | * problems unless all intersegment stuff is checked for BIOS | |
7478 | * access. Check needed here. For moment, let it alone. | |
7479 | */ | |
7480 | TRACE_AND_STEP(); | |
7481 | push_word(M.x86.R_CS); | |
7482 | M.x86.R_CS = farseg; | |
7483 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
7484 | push_long(M.x86.R_EIP); | |
7485 | } | |
7486 | else { | |
7487 | push_word(M.x86.R_IP); | |
7488 | } | |
7489 | M.x86.R_EIP = faroff & 0xffff; | |
7490 | DECODE_CLEAR_SEGOVR(); | |
7491 | END_OF_INSTR(); | |
7492 | } | |
7493 | ||
7494 | /**************************************************************************** | |
7495 | REMARKS: | |
7496 | Handles opcode 0x9b | |
7497 | ****************************************************************************/ | |
7498 | static void | |
7499 | x86emuOp_wait(u8 X86EMU_UNUSED(op1)) | |
7500 | { | |
7501 | START_OF_INSTR(); | |
7502 | DECODE_PRINTF("WAIT"); | |
7503 | TRACE_AND_STEP(); | |
7504 | /* NADA. */ | |
7505 | DECODE_CLEAR_SEGOVR(); | |
7506 | END_OF_INSTR(); | |
7507 | } | |
7508 | ||
7509 | /**************************************************************************** | |
7510 | REMARKS: | |
7511 | Handles opcode 0x9c | |
7512 | ****************************************************************************/ | |
7513 | static void | |
7514 | x86emuOp_pushf_word(u8 X86EMU_UNUSED(op1)) | |
7515 | { | |
7516 | u32 flags; | |
7517 | ||
7518 | START_OF_INSTR(); | |
7519 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
7520 | DECODE_PRINTF("PUSHFD\n"); | |
7521 | } | |
7522 | else { | |
7523 | DECODE_PRINTF("PUSHF\n"); | |
7524 | } | |
7525 | TRACE_AND_STEP(); | |
7526 | ||
7527 | /* clear out *all* bits not representing flags, and turn on real bits */ | |
7528 | flags = (M.x86.R_EFLG & F_MSK) | F_ALWAYS_ON; | |
7529 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
7530 | push_long(flags); | |
7531 | } | |
7532 | else { | |
7533 | push_word((u16) flags); | |
7534 | } | |
7535 | DECODE_CLEAR_SEGOVR(); | |
7536 | END_OF_INSTR(); | |
7537 | } | |
7538 | ||
7539 | /**************************************************************************** | |
7540 | REMARKS: | |
7541 | Handles opcode 0x9d | |
7542 | ****************************************************************************/ | |
7543 | static void | |
7544 | x86emuOp_popf_word(u8 X86EMU_UNUSED(op1)) | |
7545 | { | |
7546 | START_OF_INSTR(); | |
7547 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
7548 | DECODE_PRINTF("POPFD\n"); | |
7549 | } | |
7550 | else { | |
7551 | DECODE_PRINTF("POPF\n"); | |
7552 | } | |
7553 | TRACE_AND_STEP(); | |
7554 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
7555 | M.x86.R_EFLG = pop_long(); | |
7556 | } | |
7557 | else { | |
7558 | M.x86.R_FLG = pop_word(); | |
7559 | } | |
7560 | DECODE_CLEAR_SEGOVR(); | |
7561 | END_OF_INSTR(); | |
7562 | } | |
7563 | ||
7564 | /**************************************************************************** | |
7565 | REMARKS: | |
7566 | Handles opcode 0x9e | |
7567 | ****************************************************************************/ | |
7568 | static void | |
7569 | x86emuOp_sahf(u8 X86EMU_UNUSED(op1)) | |
7570 | { | |
7571 | START_OF_INSTR(); | |
7572 | DECODE_PRINTF("SAHF\n"); | |
7573 | TRACE_AND_STEP(); | |
7574 | /* clear the lower bits of the flag register */ | |
7575 | M.x86.R_FLG &= 0xffffff00; | |
7576 | /* or in the AH register into the flags register */ | |
7577 | M.x86.R_FLG |= M.x86.R_AH; | |
7578 | DECODE_CLEAR_SEGOVR(); | |
7579 | END_OF_INSTR(); | |
7580 | } | |
7581 | ||
7582 | /**************************************************************************** | |
7583 | REMARKS: | |
7584 | Handles opcode 0x9f | |
7585 | ****************************************************************************/ | |
7586 | static void | |
7587 | x86emuOp_lahf(u8 X86EMU_UNUSED(op1)) | |
7588 | { | |
7589 | START_OF_INSTR(); | |
7590 | DECODE_PRINTF("LAHF\n"); | |
7591 | TRACE_AND_STEP(); | |
7592 | M.x86.R_AH = (u8) (M.x86.R_FLG & 0xff); | |
7593 | /*undocumented TC++ behavior??? Nope. It's documented, but | |
7594 | you have too look real hard to notice it. */ | |
7595 | M.x86.R_AH |= 0x2; | |
7596 | DECODE_CLEAR_SEGOVR(); | |
7597 | END_OF_INSTR(); | |
7598 | } | |
7599 | ||
7600 | /**************************************************************************** | |
7601 | REMARKS: | |
7602 | Handles opcode 0xa0 | |
7603 | ****************************************************************************/ | |
7604 | static void | |
7605 | x86emuOp_mov_AL_M_IMM(u8 X86EMU_UNUSED(op1)) | |
7606 | { | |
7607 | u16 offset; | |
7608 | ||
7609 | START_OF_INSTR(); | |
7610 | DECODE_PRINTF("MOV\tAL,"); | |
7611 | offset = fetch_word_imm(); | |
7612 | DECODE_PRINTF2("[%04x]\n", offset); | |
7613 | TRACE_AND_STEP(); | |
7614 | M.x86.R_AL = fetch_data_byte(offset); | |
7615 | DECODE_CLEAR_SEGOVR(); | |
7616 | END_OF_INSTR(); | |
7617 | } | |
7618 | ||
7619 | /**************************************************************************** | |
7620 | REMARKS: | |
7621 | Handles opcode 0xa1 | |
7622 | ****************************************************************************/ | |
7623 | static void | |
7624 | x86emuOp_mov_AX_M_IMM(u8 X86EMU_UNUSED(op1)) | |
7625 | { | |
7626 | u16 offset; | |
7627 | ||
7628 | START_OF_INSTR(); | |
7629 | offset = fetch_word_imm(); | |
7630 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
7631 | DECODE_PRINTF2("MOV\tEAX,[%04x]\n", offset); | |
7632 | } | |
7633 | else { | |
7634 | DECODE_PRINTF2("MOV\tAX,[%04x]\n", offset); | |
7635 | } | |
7636 | TRACE_AND_STEP(); | |
7637 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
7638 | M.x86.R_EAX = fetch_data_long(offset); | |
7639 | } | |
7640 | else { | |
7641 | M.x86.R_AX = fetch_data_word(offset); | |
7642 | } | |
7643 | DECODE_CLEAR_SEGOVR(); | |
7644 | END_OF_INSTR(); | |
7645 | } | |
7646 | ||
7647 | /**************************************************************************** | |
7648 | REMARKS: | |
7649 | Handles opcode 0xa2 | |
7650 | ****************************************************************************/ | |
7651 | static void | |
7652 | x86emuOp_mov_M_AL_IMM(u8 X86EMU_UNUSED(op1)) | |
7653 | { | |
7654 | u16 offset; | |
7655 | ||
7656 | START_OF_INSTR(); | |
7657 | DECODE_PRINTF("MOV\t"); | |
7658 | offset = fetch_word_imm(); | |
7659 | DECODE_PRINTF2("[%04x],AL\n", offset); | |
7660 | TRACE_AND_STEP(); | |
7661 | store_data_byte(offset, M.x86.R_AL); | |
7662 | DECODE_CLEAR_SEGOVR(); | |
7663 | END_OF_INSTR(); | |
7664 | } | |
7665 | ||
7666 | /**************************************************************************** | |
7667 | REMARKS: | |
7668 | Handles opcode 0xa3 | |
7669 | ****************************************************************************/ | |
7670 | static void | |
7671 | x86emuOp_mov_M_AX_IMM(u8 X86EMU_UNUSED(op1)) | |
7672 | { | |
7673 | u16 offset; | |
7674 | ||
7675 | START_OF_INSTR(); | |
7676 | offset = fetch_word_imm(); | |
7677 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
7678 | DECODE_PRINTF2("MOV\t[%04x],EAX\n", offset); | |
7679 | } | |
7680 | else { | |
7681 | DECODE_PRINTF2("MOV\t[%04x],AX\n", offset); | |
7682 | } | |
7683 | TRACE_AND_STEP(); | |
7684 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
7685 | store_data_long(offset, M.x86.R_EAX); | |
7686 | } | |
7687 | else { | |
7688 | store_data_word(offset, M.x86.R_AX); | |
7689 | } | |
7690 | DECODE_CLEAR_SEGOVR(); | |
7691 | END_OF_INSTR(); | |
7692 | } | |
7693 | ||
7694 | /**************************************************************************** | |
7695 | REMARKS: | |
7696 | Handles opcode 0xa4 | |
7697 | ****************************************************************************/ | |
7698 | static void | |
7699 | x86emuOp_movs_byte(u8 X86EMU_UNUSED(op1)) | |
7700 | { | |
7701 | u8 val; | |
7702 | u32 count; | |
7703 | int inc; | |
7704 | ||
7705 | START_OF_INSTR(); | |
7706 | DECODE_PRINTF("MOVS\tBYTE\n"); | |
7707 | if (ACCESS_FLAG(F_DF)) /* down */ | |
7708 | inc = -1; | |
7709 | else | |
7710 | inc = 1; | |
7711 | TRACE_AND_STEP(); | |
7712 | count = 1; | |
7713 | if (M.x86.mode & (SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE)) { | |
7714 | /* dont care whether REPE or REPNE */ | |
7715 | /* move them until CX is ZERO. */ | |
7716 | count = M.x86.R_CX; | |
7717 | M.x86.R_CX = 0; | |
7718 | M.x86.mode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE); | |
7719 | } | |
7720 | while (count--) { | |
7721 | val = fetch_data_byte(M.x86.R_SI); | |
7722 | store_data_byte_abs(M.x86.R_ES, M.x86.R_DI, val); | |
7723 | M.x86.R_SI += inc; | |
7724 | M.x86.R_DI += inc; | |
7725 | } | |
7726 | DECODE_CLEAR_SEGOVR(); | |
7727 | END_OF_INSTR(); | |
7728 | } | |
7729 | ||
7730 | /**************************************************************************** | |
7731 | REMARKS: | |
7732 | Handles opcode 0xa5 | |
7733 | ****************************************************************************/ | |
7734 | static void | |
7735 | x86emuOp_movs_word(u8 X86EMU_UNUSED(op1)) | |
7736 | { | |
7737 | u32 val; | |
7738 | int inc; | |
7739 | u32 count; | |
7740 | ||
7741 | START_OF_INSTR(); | |
7742 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
7743 | DECODE_PRINTF("MOVS\tDWORD\n"); | |
7744 | if (ACCESS_FLAG(F_DF)) /* down */ | |
7745 | inc = -4; | |
7746 | else | |
7747 | inc = 4; | |
7748 | } | |
7749 | else { | |
7750 | DECODE_PRINTF("MOVS\tWORD\n"); | |
7751 | if (ACCESS_FLAG(F_DF)) /* down */ | |
7752 | inc = -2; | |
7753 | else | |
7754 | inc = 2; | |
7755 | } | |
7756 | TRACE_AND_STEP(); | |
7757 | count = 1; | |
7758 | if (M.x86.mode & (SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE)) { | |
7759 | /* dont care whether REPE or REPNE */ | |
7760 | /* move them until CX is ZERO. */ | |
7761 | count = M.x86.R_CX; | |
7762 | M.x86.R_CX = 0; | |
7763 | M.x86.mode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE); | |
7764 | } | |
7765 | while (count--) { | |
7766 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
7767 | val = fetch_data_long(M.x86.R_SI); | |
7768 | store_data_long_abs(M.x86.R_ES, M.x86.R_DI, val); | |
7769 | } | |
7770 | else { | |
7771 | val = fetch_data_word(M.x86.R_SI); | |
7772 | store_data_word_abs(M.x86.R_ES, M.x86.R_DI, (u16) val); | |
7773 | } | |
7774 | M.x86.R_SI += inc; | |
7775 | M.x86.R_DI += inc; | |
7776 | } | |
7777 | DECODE_CLEAR_SEGOVR(); | |
7778 | END_OF_INSTR(); | |
7779 | } | |
7780 | ||
7781 | /**************************************************************************** | |
7782 | REMARKS: | |
7783 | Handles opcode 0xa6 | |
7784 | ****************************************************************************/ | |
7785 | static void | |
7786 | x86emuOp_cmps_byte(u8 X86EMU_UNUSED(op1)) | |
7787 | { | |
7788 | s8 val1, val2; | |
7789 | int inc; | |
7790 | ||
7791 | START_OF_INSTR(); | |
7792 | DECODE_PRINTF("CMPS\tBYTE\n"); | |
7793 | TRACE_AND_STEP(); | |
7794 | if (ACCESS_FLAG(F_DF)) /* down */ | |
7795 | inc = -1; | |
7796 | else | |
7797 | inc = 1; | |
7798 | ||
7799 | if (M.x86.mode & SYSMODE_PREFIX_REPE) { | |
7800 | /* REPE */ | |
7801 | /* move them until CX is ZERO. */ | |
7802 | while (M.x86.R_CX != 0) { | |
7803 | val1 = fetch_data_byte(M.x86.R_SI); | |
7804 | val2 = fetch_data_byte_abs(M.x86.R_ES, M.x86.R_DI); | |
7805 | cmp_byte(val1, val2); | |
7806 | M.x86.R_CX -= 1; | |
7807 | M.x86.R_SI += inc; | |
7808 | M.x86.R_DI += inc; | |
7809 | if (ACCESS_FLAG(F_ZF) == 0) | |
7810 | break; | |
7811 | } | |
7812 | M.x86.mode &= ~SYSMODE_PREFIX_REPE; | |
7813 | } | |
7814 | else if (M.x86.mode & SYSMODE_PREFIX_REPNE) { | |
7815 | /* REPNE */ | |
7816 | /* move them until CX is ZERO. */ | |
7817 | while (M.x86.R_CX != 0) { | |
7818 | val1 = fetch_data_byte(M.x86.R_SI); | |
7819 | val2 = fetch_data_byte_abs(M.x86.R_ES, M.x86.R_DI); | |
7820 | cmp_byte(val1, val2); | |
7821 | M.x86.R_CX -= 1; | |
7822 | M.x86.R_SI += inc; | |
7823 | M.x86.R_DI += inc; | |
7824 | if (ACCESS_FLAG(F_ZF)) | |
7825 | break; /* zero flag set means equal */ | |
7826 | } | |
7827 | M.x86.mode &= ~SYSMODE_PREFIX_REPNE; | |
7828 | } | |
7829 | else { | |
7830 | val1 = fetch_data_byte(M.x86.R_SI); | |
7831 | val2 = fetch_data_byte_abs(M.x86.R_ES, M.x86.R_DI); | |
7832 | cmp_byte(val1, val2); | |
7833 | M.x86.R_SI += inc; | |
7834 | M.x86.R_DI += inc; | |
7835 | } | |
7836 | DECODE_CLEAR_SEGOVR(); | |
7837 | END_OF_INSTR(); | |
7838 | } | |
7839 | ||
7840 | /**************************************************************************** | |
7841 | REMARKS: | |
7842 | Handles opcode 0xa7 | |
7843 | ****************************************************************************/ | |
7844 | static void | |
7845 | x86emuOp_cmps_word(u8 X86EMU_UNUSED(op1)) | |
7846 | { | |
7847 | u32 val1, val2; | |
7848 | int inc; | |
7849 | ||
7850 | START_OF_INSTR(); | |
7851 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
7852 | DECODE_PRINTF("CMPS\tDWORD\n"); | |
7853 | if (ACCESS_FLAG(F_DF)) /* down */ | |
7854 | inc = -4; | |
7855 | else | |
7856 | inc = 4; | |
7857 | } | |
7858 | else { | |
7859 | DECODE_PRINTF("CMPS\tWORD\n"); | |
7860 | if (ACCESS_FLAG(F_DF)) /* down */ | |
7861 | inc = -2; | |
7862 | else | |
7863 | inc = 2; | |
7864 | } | |
7865 | TRACE_AND_STEP(); | |
7866 | if (M.x86.mode & SYSMODE_PREFIX_REPE) { | |
7867 | /* REPE */ | |
7868 | /* move them until CX is ZERO. */ | |
7869 | while (M.x86.R_CX != 0) { | |
7870 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
7871 | val1 = fetch_data_long(M.x86.R_SI); | |
7872 | val2 = fetch_data_long_abs(M.x86.R_ES, M.x86.R_DI); | |
7873 | cmp_long(val1, val2); | |
7874 | } | |
7875 | else { | |
7876 | val1 = fetch_data_word(M.x86.R_SI); | |
7877 | val2 = fetch_data_word_abs(M.x86.R_ES, M.x86.R_DI); | |
7878 | cmp_word((u16) val1, (u16) val2); | |
7879 | } | |
7880 | M.x86.R_CX -= 1; | |
7881 | M.x86.R_SI += inc; | |
7882 | M.x86.R_DI += inc; | |
7883 | if (ACCESS_FLAG(F_ZF) == 0) | |
7884 | break; | |
7885 | } | |
7886 | M.x86.mode &= ~SYSMODE_PREFIX_REPE; | |
7887 | } | |
7888 | else if (M.x86.mode & SYSMODE_PREFIX_REPNE) { | |
7889 | /* REPNE */ | |
7890 | /* move them until CX is ZERO. */ | |
7891 | while (M.x86.R_CX != 0) { | |
7892 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
7893 | val1 = fetch_data_long(M.x86.R_SI); | |
7894 | val2 = fetch_data_long_abs(M.x86.R_ES, M.x86.R_DI); | |
7895 | cmp_long(val1, val2); | |
7896 | } | |
7897 | else { | |
7898 | val1 = fetch_data_word(M.x86.R_SI); | |
7899 | val2 = fetch_data_word_abs(M.x86.R_ES, M.x86.R_DI); | |
7900 | cmp_word((u16) val1, (u16) val2); | |
7901 | } | |
7902 | M.x86.R_CX -= 1; | |
7903 | M.x86.R_SI += inc; | |
7904 | M.x86.R_DI += inc; | |
7905 | if (ACCESS_FLAG(F_ZF)) | |
7906 | break; /* zero flag set means equal */ | |
7907 | } | |
7908 | M.x86.mode &= ~SYSMODE_PREFIX_REPNE; | |
7909 | } | |
7910 | else { | |
7911 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
7912 | val1 = fetch_data_long(M.x86.R_SI); | |
7913 | val2 = fetch_data_long_abs(M.x86.R_ES, M.x86.R_DI); | |
7914 | cmp_long(val1, val2); | |
7915 | } | |
7916 | else { | |
7917 | val1 = fetch_data_word(M.x86.R_SI); | |
7918 | val2 = fetch_data_word_abs(M.x86.R_ES, M.x86.R_DI); | |
7919 | cmp_word((u16) val1, (u16) val2); | |
7920 | } | |
7921 | M.x86.R_SI += inc; | |
7922 | M.x86.R_DI += inc; | |
7923 | } | |
7924 | DECODE_CLEAR_SEGOVR(); | |
7925 | END_OF_INSTR(); | |
7926 | } | |
7927 | ||
7928 | /**************************************************************************** | |
7929 | REMARKS: | |
7930 | Handles opcode 0xa8 | |
7931 | ****************************************************************************/ | |
7932 | static void | |
7933 | x86emuOp_test_AL_IMM(u8 X86EMU_UNUSED(op1)) | |
7934 | { | |
7935 | int imm; | |
7936 | ||
7937 | START_OF_INSTR(); | |
7938 | DECODE_PRINTF("TEST\tAL,"); | |
7939 | imm = fetch_byte_imm(); | |
7940 | DECODE_PRINTF2("%04x\n", imm); | |
7941 | TRACE_AND_STEP(); | |
7942 | test_byte(M.x86.R_AL, (u8) imm); | |
7943 | DECODE_CLEAR_SEGOVR(); | |
7944 | END_OF_INSTR(); | |
7945 | } | |
7946 | ||
7947 | /**************************************************************************** | |
7948 | REMARKS: | |
7949 | Handles opcode 0xa9 | |
7950 | ****************************************************************************/ | |
7951 | static void | |
7952 | x86emuOp_test_AX_IMM(u8 X86EMU_UNUSED(op1)) | |
7953 | { | |
7954 | u32 srcval; | |
7955 | ||
7956 | START_OF_INSTR(); | |
7957 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
7958 | DECODE_PRINTF("TEST\tEAX,"); | |
7959 | srcval = fetch_long_imm(); | |
7960 | } | |
7961 | else { | |
7962 | DECODE_PRINTF("TEST\tAX,"); | |
7963 | srcval = fetch_word_imm(); | |
7964 | } | |
7965 | DECODE_PRINTF2("%x\n", srcval); | |
7966 | TRACE_AND_STEP(); | |
7967 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
7968 | test_long(M.x86.R_EAX, srcval); | |
7969 | } | |
7970 | else { | |
7971 | test_word(M.x86.R_AX, (u16) srcval); | |
7972 | } | |
7973 | DECODE_CLEAR_SEGOVR(); | |
7974 | END_OF_INSTR(); | |
7975 | } | |
7976 | ||
7977 | /**************************************************************************** | |
7978 | REMARKS: | |
7979 | Handles opcode 0xaa | |
7980 | ****************************************************************************/ | |
7981 | static void | |
7982 | x86emuOp_stos_byte(u8 X86EMU_UNUSED(op1)) | |
7983 | { | |
7984 | int inc; | |
7985 | ||
7986 | START_OF_INSTR(); | |
7987 | DECODE_PRINTF("STOS\tBYTE\n"); | |
7988 | if (ACCESS_FLAG(F_DF)) /* down */ | |
7989 | inc = -1; | |
7990 | else | |
7991 | inc = 1; | |
7992 | TRACE_AND_STEP(); | |
7993 | if (M.x86.mode & (SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE)) { | |
7994 | /* dont care whether REPE or REPNE */ | |
7995 | /* move them until CX is ZERO. */ | |
7996 | while (M.x86.R_CX != 0) { | |
7997 | store_data_byte_abs(M.x86.R_ES, M.x86.R_DI, M.x86.R_AL); | |
7998 | M.x86.R_CX -= 1; | |
7999 | M.x86.R_DI += inc; | |
8000 | } | |
8001 | M.x86.mode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE); | |
8002 | } | |
8003 | else { | |
8004 | store_data_byte_abs(M.x86.R_ES, M.x86.R_DI, M.x86.R_AL); | |
8005 | M.x86.R_DI += inc; | |
8006 | } | |
8007 | DECODE_CLEAR_SEGOVR(); | |
8008 | END_OF_INSTR(); | |
8009 | } | |
8010 | ||
8011 | /**************************************************************************** | |
8012 | REMARKS: | |
8013 | Handles opcode 0xab | |
8014 | ****************************************************************************/ | |
8015 | static void | |
8016 | x86emuOp_stos_word(u8 X86EMU_UNUSED(op1)) | |
8017 | { | |
8018 | int inc; | |
8019 | u32 count; | |
8020 | ||
8021 | START_OF_INSTR(); | |
8022 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
8023 | DECODE_PRINTF("STOS\tDWORD\n"); | |
8024 | if (ACCESS_FLAG(F_DF)) /* down */ | |
8025 | inc = -4; | |
8026 | else | |
8027 | inc = 4; | |
8028 | } | |
8029 | else { | |
8030 | DECODE_PRINTF("STOS\tWORD\n"); | |
8031 | if (ACCESS_FLAG(F_DF)) /* down */ | |
8032 | inc = -2; | |
8033 | else | |
8034 | inc = 2; | |
8035 | } | |
8036 | TRACE_AND_STEP(); | |
8037 | count = 1; | |
8038 | if (M.x86.mode & (SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE)) { | |
8039 | /* dont care whether REPE or REPNE */ | |
8040 | /* move them until CX is ZERO. */ | |
8041 | count = M.x86.R_CX; | |
8042 | M.x86.R_CX = 0; | |
8043 | M.x86.mode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE); | |
8044 | } | |
8045 | while (count--) { | |
8046 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
8047 | store_data_long_abs(M.x86.R_ES, M.x86.R_DI, M.x86.R_EAX); | |
8048 | } | |
8049 | else { | |
8050 | store_data_word_abs(M.x86.R_ES, M.x86.R_DI, M.x86.R_AX); | |
8051 | } | |
8052 | M.x86.R_DI += inc; | |
8053 | } | |
8054 | DECODE_CLEAR_SEGOVR(); | |
8055 | END_OF_INSTR(); | |
8056 | } | |
8057 | ||
8058 | /**************************************************************************** | |
8059 | REMARKS: | |
8060 | Handles opcode 0xac | |
8061 | ****************************************************************************/ | |
8062 | static void | |
8063 | x86emuOp_lods_byte(u8 X86EMU_UNUSED(op1)) | |
8064 | { | |
8065 | int inc; | |
8066 | ||
8067 | START_OF_INSTR(); | |
8068 | DECODE_PRINTF("LODS\tBYTE\n"); | |
8069 | TRACE_AND_STEP(); | |
8070 | if (ACCESS_FLAG(F_DF)) /* down */ | |
8071 | inc = -1; | |
8072 | else | |
8073 | inc = 1; | |
8074 | if (M.x86.mode & (SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE)) { | |
8075 | /* dont care whether REPE or REPNE */ | |
8076 | /* move them until CX is ZERO. */ | |
8077 | while (M.x86.R_CX != 0) { | |
8078 | M.x86.R_AL = fetch_data_byte(M.x86.R_SI); | |
8079 | M.x86.R_CX -= 1; | |
8080 | M.x86.R_SI += inc; | |
8081 | } | |
8082 | M.x86.mode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE); | |
8083 | } | |
8084 | else { | |
8085 | M.x86.R_AL = fetch_data_byte(M.x86.R_SI); | |
8086 | M.x86.R_SI += inc; | |
8087 | } | |
8088 | DECODE_CLEAR_SEGOVR(); | |
8089 | END_OF_INSTR(); | |
8090 | } | |
8091 | ||
8092 | /**************************************************************************** | |
8093 | REMARKS: | |
8094 | Handles opcode 0xad | |
8095 | ****************************************************************************/ | |
8096 | static void | |
8097 | x86emuOp_lods_word(u8 X86EMU_UNUSED(op1)) | |
8098 | { | |
8099 | int inc; | |
8100 | u32 count; | |
8101 | ||
8102 | START_OF_INSTR(); | |
8103 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
8104 | DECODE_PRINTF("LODS\tDWORD\n"); | |
8105 | if (ACCESS_FLAG(F_DF)) /* down */ | |
8106 | inc = -4; | |
8107 | else | |
8108 | inc = 4; | |
8109 | } | |
8110 | else { | |
8111 | DECODE_PRINTF("LODS\tWORD\n"); | |
8112 | if (ACCESS_FLAG(F_DF)) /* down */ | |
8113 | inc = -2; | |
8114 | else | |
8115 | inc = 2; | |
8116 | } | |
8117 | TRACE_AND_STEP(); | |
8118 | count = 1; | |
8119 | if (M.x86.mode & (SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE)) { | |
8120 | /* dont care whether REPE or REPNE */ | |
8121 | /* move them until CX is ZERO. */ | |
8122 | count = M.x86.R_CX; | |
8123 | M.x86.R_CX = 0; | |
8124 | M.x86.mode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE); | |
8125 | } | |
8126 | while (count--) { | |
8127 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
8128 | M.x86.R_EAX = fetch_data_long(M.x86.R_SI); | |
8129 | } | |
8130 | else { | |
8131 | M.x86.R_AX = fetch_data_word(M.x86.R_SI); | |
8132 | } | |
8133 | M.x86.R_SI += inc; | |
8134 | } | |
8135 | DECODE_CLEAR_SEGOVR(); | |
8136 | END_OF_INSTR(); | |
8137 | } | |
8138 | ||
8139 | /**************************************************************************** | |
8140 | REMARKS: | |
8141 | Handles opcode 0xae | |
8142 | ****************************************************************************/ | |
8143 | static void | |
8144 | x86emuOp_scas_byte(u8 X86EMU_UNUSED(op1)) | |
8145 | { | |
8146 | s8 val2; | |
8147 | int inc; | |
8148 | ||
8149 | START_OF_INSTR(); | |
8150 | DECODE_PRINTF("SCAS\tBYTE\n"); | |
8151 | TRACE_AND_STEP(); | |
8152 | if (ACCESS_FLAG(F_DF)) /* down */ | |
8153 | inc = -1; | |
8154 | else | |
8155 | inc = 1; | |
8156 | if (M.x86.mode & SYSMODE_PREFIX_REPE) { | |
8157 | /* REPE */ | |
8158 | /* move them until CX is ZERO. */ | |
8159 | while (M.x86.R_CX != 0) { | |
8160 | val2 = fetch_data_byte_abs(M.x86.R_ES, M.x86.R_DI); | |
8161 | cmp_byte(M.x86.R_AL, val2); | |
8162 | M.x86.R_CX -= 1; | |
8163 | M.x86.R_DI += inc; | |
8164 | if (ACCESS_FLAG(F_ZF) == 0) | |
8165 | break; | |
8166 | } | |
8167 | M.x86.mode &= ~SYSMODE_PREFIX_REPE; | |
8168 | } | |
8169 | else if (M.x86.mode & SYSMODE_PREFIX_REPNE) { | |
8170 | /* REPNE */ | |
8171 | /* move them until CX is ZERO. */ | |
8172 | while (M.x86.R_CX != 0) { | |
8173 | val2 = fetch_data_byte_abs(M.x86.R_ES, M.x86.R_DI); | |
8174 | cmp_byte(M.x86.R_AL, val2); | |
8175 | M.x86.R_CX -= 1; | |
8176 | M.x86.R_DI += inc; | |
8177 | if (ACCESS_FLAG(F_ZF)) | |
8178 | break; /* zero flag set means equal */ | |
8179 | } | |
8180 | M.x86.mode &= ~SYSMODE_PREFIX_REPNE; | |
8181 | } | |
8182 | else { | |
8183 | val2 = fetch_data_byte_abs(M.x86.R_ES, M.x86.R_DI); | |
8184 | cmp_byte(M.x86.R_AL, val2); | |
8185 | M.x86.R_DI += inc; | |
8186 | } | |
8187 | DECODE_CLEAR_SEGOVR(); | |
8188 | END_OF_INSTR(); | |
8189 | } | |
8190 | ||
8191 | /**************************************************************************** | |
8192 | REMARKS: | |
8193 | Handles opcode 0xaf | |
8194 | ****************************************************************************/ | |
8195 | static void | |
8196 | x86emuOp_scas_word(u8 X86EMU_UNUSED(op1)) | |
8197 | { | |
8198 | int inc; | |
8199 | u32 val; | |
8200 | ||
8201 | START_OF_INSTR(); | |
8202 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
8203 | DECODE_PRINTF("SCAS\tDWORD\n"); | |
8204 | if (ACCESS_FLAG(F_DF)) /* down */ | |
8205 | inc = -4; | |
8206 | else | |
8207 | inc = 4; | |
8208 | } | |
8209 | else { | |
8210 | DECODE_PRINTF("SCAS\tWORD\n"); | |
8211 | if (ACCESS_FLAG(F_DF)) /* down */ | |
8212 | inc = -2; | |
8213 | else | |
8214 | inc = 2; | |
8215 | } | |
8216 | TRACE_AND_STEP(); | |
8217 | if (M.x86.mode & SYSMODE_PREFIX_REPE) { | |
8218 | /* REPE */ | |
8219 | /* move them until CX is ZERO. */ | |
8220 | while (M.x86.R_CX != 0) { | |
8221 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
8222 | val = fetch_data_long_abs(M.x86.R_ES, M.x86.R_DI); | |
8223 | cmp_long(M.x86.R_EAX, val); | |
8224 | } | |
8225 | else { | |
8226 | val = fetch_data_word_abs(M.x86.R_ES, M.x86.R_DI); | |
8227 | cmp_word(M.x86.R_AX, (u16) val); | |
8228 | } | |
8229 | M.x86.R_CX -= 1; | |
8230 | M.x86.R_DI += inc; | |
8231 | if (ACCESS_FLAG(F_ZF) == 0) | |
8232 | break; | |
8233 | } | |
8234 | M.x86.mode &= ~SYSMODE_PREFIX_REPE; | |
8235 | } | |
8236 | else if (M.x86.mode & SYSMODE_PREFIX_REPNE) { | |
8237 | /* REPNE */ | |
8238 | /* move them until CX is ZERO. */ | |
8239 | while (M.x86.R_CX != 0) { | |
8240 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
8241 | val = fetch_data_long_abs(M.x86.R_ES, M.x86.R_DI); | |
8242 | cmp_long(M.x86.R_EAX, val); | |
8243 | } | |
8244 | else { | |
8245 | val = fetch_data_word_abs(M.x86.R_ES, M.x86.R_DI); | |
8246 | cmp_word(M.x86.R_AX, (u16) val); | |
8247 | } | |
8248 | M.x86.R_CX -= 1; | |
8249 | M.x86.R_DI += inc; | |
8250 | if (ACCESS_FLAG(F_ZF)) | |
8251 | break; /* zero flag set means equal */ | |
8252 | } | |
8253 | M.x86.mode &= ~SYSMODE_PREFIX_REPNE; | |
8254 | } | |
8255 | else { | |
8256 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
8257 | val = fetch_data_long_abs(M.x86.R_ES, M.x86.R_DI); | |
8258 | cmp_long(M.x86.R_EAX, val); | |
8259 | } | |
8260 | else { | |
8261 | val = fetch_data_word_abs(M.x86.R_ES, M.x86.R_DI); | |
8262 | cmp_word(M.x86.R_AX, (u16) val); | |
8263 | } | |
8264 | M.x86.R_DI += inc; | |
8265 | } | |
8266 | DECODE_CLEAR_SEGOVR(); | |
8267 | END_OF_INSTR(); | |
8268 | } | |
8269 | ||
8270 | /**************************************************************************** | |
8271 | REMARKS: | |
8272 | Handles opcode 0xb0 | |
8273 | ****************************************************************************/ | |
8274 | static void | |
8275 | x86emuOp_mov_byte_AL_IMM(u8 X86EMU_UNUSED(op1)) | |
8276 | { | |
8277 | u8 imm; | |
8278 | ||
8279 | START_OF_INSTR(); | |
8280 | DECODE_PRINTF("MOV\tAL,"); | |
8281 | imm = fetch_byte_imm(); | |
8282 | DECODE_PRINTF2("%x\n", imm); | |
8283 | TRACE_AND_STEP(); | |
8284 | M.x86.R_AL = imm; | |
8285 | DECODE_CLEAR_SEGOVR(); | |
8286 | END_OF_INSTR(); | |
8287 | } | |
8288 | ||
8289 | /**************************************************************************** | |
8290 | REMARKS: | |
8291 | Handles opcode 0xb1 | |
8292 | ****************************************************************************/ | |
8293 | static void | |
8294 | x86emuOp_mov_byte_CL_IMM(u8 X86EMU_UNUSED(op1)) | |
8295 | { | |
8296 | u8 imm; | |
8297 | ||
8298 | START_OF_INSTR(); | |
8299 | DECODE_PRINTF("MOV\tCL,"); | |
8300 | imm = fetch_byte_imm(); | |
8301 | DECODE_PRINTF2("%x\n", imm); | |
8302 | TRACE_AND_STEP(); | |
8303 | M.x86.R_CL = imm; | |
8304 | DECODE_CLEAR_SEGOVR(); | |
8305 | END_OF_INSTR(); | |
8306 | } | |
8307 | ||
8308 | /**************************************************************************** | |
8309 | REMARKS: | |
8310 | Handles opcode 0xb2 | |
8311 | ****************************************************************************/ | |
8312 | static void | |
8313 | x86emuOp_mov_byte_DL_IMM(u8 X86EMU_UNUSED(op1)) | |
8314 | { | |
8315 | u8 imm; | |
8316 | ||
8317 | START_OF_INSTR(); | |
8318 | DECODE_PRINTF("MOV\tDL,"); | |
8319 | imm = fetch_byte_imm(); | |
8320 | DECODE_PRINTF2("%x\n", imm); | |
8321 | TRACE_AND_STEP(); | |
8322 | M.x86.R_DL = imm; | |
8323 | DECODE_CLEAR_SEGOVR(); | |
8324 | END_OF_INSTR(); | |
8325 | } | |
8326 | ||
8327 | /**************************************************************************** | |
8328 | REMARKS: | |
8329 | Handles opcode 0xb3 | |
8330 | ****************************************************************************/ | |
8331 | static void | |
8332 | x86emuOp_mov_byte_BL_IMM(u8 X86EMU_UNUSED(op1)) | |
8333 | { | |
8334 | u8 imm; | |
8335 | ||
8336 | START_OF_INSTR(); | |
8337 | DECODE_PRINTF("MOV\tBL,"); | |
8338 | imm = fetch_byte_imm(); | |
8339 | DECODE_PRINTF2("%x\n", imm); | |
8340 | TRACE_AND_STEP(); | |
8341 | M.x86.R_BL = imm; | |
8342 | DECODE_CLEAR_SEGOVR(); | |
8343 | END_OF_INSTR(); | |
8344 | } | |
8345 | ||
8346 | /**************************************************************************** | |
8347 | REMARKS: | |
8348 | Handles opcode 0xb4 | |
8349 | ****************************************************************************/ | |
8350 | static void | |
8351 | x86emuOp_mov_byte_AH_IMM(u8 X86EMU_UNUSED(op1)) | |
8352 | { | |
8353 | u8 imm; | |
8354 | ||
8355 | START_OF_INSTR(); | |
8356 | DECODE_PRINTF("MOV\tAH,"); | |
8357 | imm = fetch_byte_imm(); | |
8358 | DECODE_PRINTF2("%x\n", imm); | |
8359 | TRACE_AND_STEP(); | |
8360 | M.x86.R_AH = imm; | |
8361 | DECODE_CLEAR_SEGOVR(); | |
8362 | END_OF_INSTR(); | |
8363 | } | |
8364 | ||
8365 | /**************************************************************************** | |
8366 | REMARKS: | |
8367 | Handles opcode 0xb5 | |
8368 | ****************************************************************************/ | |
8369 | static void | |
8370 | x86emuOp_mov_byte_CH_IMM(u8 X86EMU_UNUSED(op1)) | |
8371 | { | |
8372 | u8 imm; | |
8373 | ||
8374 | START_OF_INSTR(); | |
8375 | DECODE_PRINTF("MOV\tCH,"); | |
8376 | imm = fetch_byte_imm(); | |
8377 | DECODE_PRINTF2("%x\n", imm); | |
8378 | TRACE_AND_STEP(); | |
8379 | M.x86.R_CH = imm; | |
8380 | DECODE_CLEAR_SEGOVR(); | |
8381 | END_OF_INSTR(); | |
8382 | } | |
8383 | ||
8384 | /**************************************************************************** | |
8385 | REMARKS: | |
8386 | Handles opcode 0xb6 | |
8387 | ****************************************************************************/ | |
8388 | static void | |
8389 | x86emuOp_mov_byte_DH_IMM(u8 X86EMU_UNUSED(op1)) | |
8390 | { | |
8391 | u8 imm; | |
8392 | ||
8393 | START_OF_INSTR(); | |
8394 | DECODE_PRINTF("MOV\tDH,"); | |
8395 | imm = fetch_byte_imm(); | |
8396 | DECODE_PRINTF2("%x\n", imm); | |
8397 | TRACE_AND_STEP(); | |
8398 | M.x86.R_DH = imm; | |
8399 | DECODE_CLEAR_SEGOVR(); | |
8400 | END_OF_INSTR(); | |
8401 | } | |
8402 | ||
8403 | /**************************************************************************** | |
8404 | REMARKS: | |
8405 | Handles opcode 0xb7 | |
8406 | ****************************************************************************/ | |
8407 | static void | |
8408 | x86emuOp_mov_byte_BH_IMM(u8 X86EMU_UNUSED(op1)) | |
8409 | { | |
8410 | u8 imm; | |
8411 | ||
8412 | START_OF_INSTR(); | |
8413 | DECODE_PRINTF("MOV\tBH,"); | |
8414 | imm = fetch_byte_imm(); | |
8415 | DECODE_PRINTF2("%x\n", imm); | |
8416 | TRACE_AND_STEP(); | |
8417 | M.x86.R_BH = imm; | |
8418 | DECODE_CLEAR_SEGOVR(); | |
8419 | END_OF_INSTR(); | |
8420 | } | |
8421 | ||
8422 | /**************************************************************************** | |
8423 | REMARKS: | |
8424 | Handles opcode 0xb8 | |
8425 | ****************************************************************************/ | |
8426 | static void | |
8427 | x86emuOp_mov_word_AX_IMM(u8 X86EMU_UNUSED(op1)) | |
8428 | { | |
8429 | u32 srcval; | |
8430 | ||
8431 | START_OF_INSTR(); | |
8432 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
8433 | DECODE_PRINTF("MOV\tEAX,"); | |
8434 | srcval = fetch_long_imm(); | |
8435 | } | |
8436 | else { | |
8437 | DECODE_PRINTF("MOV\tAX,"); | |
8438 | srcval = fetch_word_imm(); | |
8439 | } | |
8440 | DECODE_PRINTF2("%x\n", srcval); | |
8441 | TRACE_AND_STEP(); | |
8442 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
8443 | M.x86.R_EAX = srcval; | |
8444 | } | |
8445 | else { | |
8446 | M.x86.R_AX = (u16) srcval; | |
8447 | } | |
8448 | DECODE_CLEAR_SEGOVR(); | |
8449 | END_OF_INSTR(); | |
8450 | } | |
8451 | ||
8452 | /**************************************************************************** | |
8453 | REMARKS: | |
8454 | Handles opcode 0xb9 | |
8455 | ****************************************************************************/ | |
8456 | static void | |
8457 | x86emuOp_mov_word_CX_IMM(u8 X86EMU_UNUSED(op1)) | |
8458 | { | |
8459 | u32 srcval; | |
8460 | ||
8461 | START_OF_INSTR(); | |
8462 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
8463 | DECODE_PRINTF("MOV\tECX,"); | |
8464 | srcval = fetch_long_imm(); | |
8465 | } | |
8466 | else { | |
8467 | DECODE_PRINTF("MOV\tCX,"); | |
8468 | srcval = fetch_word_imm(); | |
8469 | } | |
8470 | DECODE_PRINTF2("%x\n", srcval); | |
8471 | TRACE_AND_STEP(); | |
8472 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
8473 | M.x86.R_ECX = srcval; | |
8474 | } | |
8475 | else { | |
8476 | M.x86.R_CX = (u16) srcval; | |
8477 | } | |
8478 | DECODE_CLEAR_SEGOVR(); | |
8479 | END_OF_INSTR(); | |
8480 | } | |
8481 | ||
8482 | /**************************************************************************** | |
8483 | REMARKS: | |
8484 | Handles opcode 0xba | |
8485 | ****************************************************************************/ | |
8486 | static void | |
8487 | x86emuOp_mov_word_DX_IMM(u8 X86EMU_UNUSED(op1)) | |
8488 | { | |
8489 | u32 srcval; | |
8490 | ||
8491 | START_OF_INSTR(); | |
8492 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
8493 | DECODE_PRINTF("MOV\tEDX,"); | |
8494 | srcval = fetch_long_imm(); | |
8495 | } | |
8496 | else { | |
8497 | DECODE_PRINTF("MOV\tDX,"); | |
8498 | srcval = fetch_word_imm(); | |
8499 | } | |
8500 | DECODE_PRINTF2("%x\n", srcval); | |
8501 | TRACE_AND_STEP(); | |
8502 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
8503 | M.x86.R_EDX = srcval; | |
8504 | } | |
8505 | else { | |
8506 | M.x86.R_DX = (u16) srcval; | |
8507 | } | |
8508 | DECODE_CLEAR_SEGOVR(); | |
8509 | END_OF_INSTR(); | |
8510 | } | |
8511 | ||
8512 | /**************************************************************************** | |
8513 | REMARKS: | |
8514 | Handles opcode 0xbb | |
8515 | ****************************************************************************/ | |
8516 | static void | |
8517 | x86emuOp_mov_word_BX_IMM(u8 X86EMU_UNUSED(op1)) | |
8518 | { | |
8519 | u32 srcval; | |
8520 | ||
8521 | START_OF_INSTR(); | |
8522 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
8523 | DECODE_PRINTF("MOV\tEBX,"); | |
8524 | srcval = fetch_long_imm(); | |
8525 | } | |
8526 | else { | |
8527 | DECODE_PRINTF("MOV\tBX,"); | |
8528 | srcval = fetch_word_imm(); | |
8529 | } | |
8530 | DECODE_PRINTF2("%x\n", srcval); | |
8531 | TRACE_AND_STEP(); | |
8532 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
8533 | M.x86.R_EBX = srcval; | |
8534 | } | |
8535 | else { | |
8536 | M.x86.R_BX = (u16) srcval; | |
8537 | } | |
8538 | DECODE_CLEAR_SEGOVR(); | |
8539 | END_OF_INSTR(); | |
8540 | } | |
8541 | ||
8542 | /**************************************************************************** | |
8543 | REMARKS: | |
8544 | Handles opcode 0xbc | |
8545 | ****************************************************************************/ | |
8546 | static void | |
8547 | x86emuOp_mov_word_SP_IMM(u8 X86EMU_UNUSED(op1)) | |
8548 | { | |
8549 | u32 srcval; | |
8550 | ||
8551 | START_OF_INSTR(); | |
8552 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
8553 | DECODE_PRINTF("MOV\tESP,"); | |
8554 | srcval = fetch_long_imm(); | |
8555 | } | |
8556 | else { | |
8557 | DECODE_PRINTF("MOV\tSP,"); | |
8558 | srcval = fetch_word_imm(); | |
8559 | } | |
8560 | DECODE_PRINTF2("%x\n", srcval); | |
8561 | TRACE_AND_STEP(); | |
8562 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
8563 | M.x86.R_ESP = srcval; | |
8564 | } | |
8565 | else { | |
8566 | M.x86.R_SP = (u16) srcval; | |
8567 | } | |
8568 | DECODE_CLEAR_SEGOVR(); | |
8569 | END_OF_INSTR(); | |
8570 | } | |
8571 | ||
8572 | /**************************************************************************** | |
8573 | REMARKS: | |
8574 | Handles opcode 0xbd | |
8575 | ****************************************************************************/ | |
8576 | static void | |
8577 | x86emuOp_mov_word_BP_IMM(u8 X86EMU_UNUSED(op1)) | |
8578 | { | |
8579 | u32 srcval; | |
8580 | ||
8581 | START_OF_INSTR(); | |
8582 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
8583 | DECODE_PRINTF("MOV\tEBP,"); | |
8584 | srcval = fetch_long_imm(); | |
8585 | } | |
8586 | else { | |
8587 | DECODE_PRINTF("MOV\tBP,"); | |
8588 | srcval = fetch_word_imm(); | |
8589 | } | |
8590 | DECODE_PRINTF2("%x\n", srcval); | |
8591 | TRACE_AND_STEP(); | |
8592 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
8593 | M.x86.R_EBP = srcval; | |
8594 | } | |
8595 | else { | |
8596 | M.x86.R_BP = (u16) srcval; | |
8597 | } | |
8598 | DECODE_CLEAR_SEGOVR(); | |
8599 | END_OF_INSTR(); | |
8600 | } | |
8601 | ||
8602 | /**************************************************************************** | |
8603 | REMARKS: | |
8604 | Handles opcode 0xbe | |
8605 | ****************************************************************************/ | |
8606 | static void | |
8607 | x86emuOp_mov_word_SI_IMM(u8 X86EMU_UNUSED(op1)) | |
8608 | { | |
8609 | u32 srcval; | |
8610 | ||
8611 | START_OF_INSTR(); | |
8612 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
8613 | DECODE_PRINTF("MOV\tESI,"); | |
8614 | srcval = fetch_long_imm(); | |
8615 | } | |
8616 | else { | |
8617 | DECODE_PRINTF("MOV\tSI,"); | |
8618 | srcval = fetch_word_imm(); | |
8619 | } | |
8620 | DECODE_PRINTF2("%x\n", srcval); | |
8621 | TRACE_AND_STEP(); | |
8622 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
8623 | M.x86.R_ESI = srcval; | |
8624 | } | |
8625 | else { | |
8626 | M.x86.R_SI = (u16) srcval; | |
8627 | } | |
8628 | DECODE_CLEAR_SEGOVR(); | |
8629 | END_OF_INSTR(); | |
8630 | } | |
8631 | ||
8632 | /**************************************************************************** | |
8633 | REMARKS: | |
8634 | Handles opcode 0xbf | |
8635 | ****************************************************************************/ | |
8636 | static void | |
8637 | x86emuOp_mov_word_DI_IMM(u8 X86EMU_UNUSED(op1)) | |
8638 | { | |
8639 | u32 srcval; | |
8640 | ||
8641 | START_OF_INSTR(); | |
8642 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
8643 | DECODE_PRINTF("MOV\tEDI,"); | |
8644 | srcval = fetch_long_imm(); | |
8645 | } | |
8646 | else { | |
8647 | DECODE_PRINTF("MOV\tDI,"); | |
8648 | srcval = fetch_word_imm(); | |
8649 | } | |
8650 | DECODE_PRINTF2("%x\n", srcval); | |
8651 | TRACE_AND_STEP(); | |
8652 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
8653 | M.x86.R_EDI = srcval; | |
8654 | } | |
8655 | else { | |
8656 | M.x86.R_DI = (u16) srcval; | |
8657 | } | |
8658 | DECODE_CLEAR_SEGOVR(); | |
8659 | END_OF_INSTR(); | |
8660 | } | |
8661 | ||
8662 | /* used by opcodes c0, d0, and d2. */ | |
8663 | static u8(*opcD0_byte_operation[]) (u8 d, u8 s) = { | |
8664 | rol_byte, ror_byte, rcl_byte, rcr_byte, shl_byte, shr_byte, shl_byte, /* sal_byte === shl_byte by definition */ | |
8665 | sar_byte,}; | |
8666 | ||
8667 | /**************************************************************************** | |
8668 | REMARKS: | |
8669 | Handles opcode 0xc0 | |
8670 | ****************************************************************************/ | |
8671 | static void | |
8672 | x86emuOp_opcC0_byte_RM_MEM(u8 X86EMU_UNUSED(op1)) | |
8673 | { | |
8674 | int mod, rl, rh; | |
8675 | u8 *destreg; | |
8676 | uint destoffset; | |
8677 | u8 destval; | |
8678 | u8 amt; | |
8679 | ||
8680 | /* | |
8681 | * Yet another weirdo special case instruction format. Part of | |
8682 | * the opcode held below in "RH". Doubly nested case would | |
8683 | * result, except that the decoded instruction | |
8684 | */ | |
8685 | START_OF_INSTR(); | |
8686 | FETCH_DECODE_MODRM(mod, rh, rl); | |
8687 | #ifdef DEBUG | |
8688 | if (DEBUG_DECODE()) { | |
8689 | /* XXX DECODE_PRINTF may be changed to something more | |
8690 | general, so that it is important to leave the strings | |
8691 | in the same format, even though the result is that the | |
8692 | above test is done twice. */ | |
8693 | ||
8694 | switch (rh) { | |
8695 | case 0: | |
8696 | DECODE_PRINTF("ROL\t"); | |
8697 | break; | |
8698 | case 1: | |
8699 | DECODE_PRINTF("ROR\t"); | |
8700 | break; | |
8701 | case 2: | |
8702 | DECODE_PRINTF("RCL\t"); | |
8703 | break; | |
8704 | case 3: | |
8705 | DECODE_PRINTF("RCR\t"); | |
8706 | break; | |
8707 | case 4: | |
8708 | DECODE_PRINTF("SHL\t"); | |
8709 | break; | |
8710 | case 5: | |
8711 | DECODE_PRINTF("SHR\t"); | |
8712 | break; | |
8713 | case 6: | |
8714 | DECODE_PRINTF("SAL\t"); | |
8715 | break; | |
8716 | case 7: | |
8717 | DECODE_PRINTF("SAR\t"); | |
8718 | break; | |
8719 | } | |
8720 | } | |
8721 | #endif | |
8722 | /* know operation, decode the mod byte to find the addressing | |
8723 | mode. */ | |
8724 | switch (mod) { | |
8725 | case 0: | |
8726 | DECODE_PRINTF("BYTE PTR "); | |
8727 | destoffset = decode_rm00_address(rl); | |
8728 | amt = fetch_byte_imm(); | |
8729 | DECODE_PRINTF2(",%x\n", amt); | |
8730 | destval = fetch_data_byte(destoffset); | |
8731 | TRACE_AND_STEP(); | |
8732 | destval = (*opcD0_byte_operation[rh]) (destval, amt); | |
8733 | store_data_byte(destoffset, destval); | |
8734 | break; | |
8735 | case 1: | |
8736 | DECODE_PRINTF("BYTE PTR "); | |
8737 | destoffset = decode_rm01_address(rl); | |
8738 | amt = fetch_byte_imm(); | |
8739 | DECODE_PRINTF2(",%x\n", amt); | |
8740 | destval = fetch_data_byte(destoffset); | |
8741 | TRACE_AND_STEP(); | |
8742 | destval = (*opcD0_byte_operation[rh]) (destval, amt); | |
8743 | store_data_byte(destoffset, destval); | |
8744 | break; | |
8745 | case 2: | |
8746 | DECODE_PRINTF("BYTE PTR "); | |
8747 | destoffset = decode_rm10_address(rl); | |
8748 | amt = fetch_byte_imm(); | |
8749 | DECODE_PRINTF2(",%x\n", amt); | |
8750 | destval = fetch_data_byte(destoffset); | |
8751 | TRACE_AND_STEP(); | |
8752 | destval = (*opcD0_byte_operation[rh]) (destval, amt); | |
8753 | store_data_byte(destoffset, destval); | |
8754 | break; | |
8755 | case 3: /* register to register */ | |
8756 | destreg = DECODE_RM_BYTE_REGISTER(rl); | |
8757 | amt = fetch_byte_imm(); | |
8758 | DECODE_PRINTF2(",%x\n", amt); | |
8759 | TRACE_AND_STEP(); | |
8760 | destval = (*opcD0_byte_operation[rh]) (*destreg, amt); | |
8761 | *destreg = destval; | |
8762 | break; | |
8763 | } | |
8764 | DECODE_CLEAR_SEGOVR(); | |
8765 | END_OF_INSTR(); | |
8766 | } | |
8767 | ||
8768 | /* used by opcodes c1, d1, and d3. */ | |
8769 | static u16(*opcD1_word_operation[]) (u16 s, u8 d) = { | |
8770 | rol_word, ror_word, rcl_word, rcr_word, shl_word, shr_word, shl_word, /* sal_byte === shl_byte by definition */ | |
8771 | sar_word,}; | |
8772 | ||
8773 | /* used by opcodes c1, d1, and d3. */ | |
8774 | static u32(*opcD1_long_operation[]) (u32 s, u8 d) = { | |
8775 | rol_long, ror_long, rcl_long, rcr_long, shl_long, shr_long, shl_long, /* sal_byte === shl_byte by definition */ | |
8776 | sar_long,}; | |
8777 | ||
8778 | /**************************************************************************** | |
8779 | REMARKS: | |
8780 | Handles opcode 0xc1 | |
8781 | ****************************************************************************/ | |
8782 | static void | |
8783 | x86emuOp_opcC1_word_RM_MEM(u8 X86EMU_UNUSED(op1)) | |
8784 | { | |
8785 | int mod, rl, rh; | |
8786 | uint destoffset; | |
8787 | u8 amt; | |
8788 | ||
8789 | /* | |
8790 | * Yet another weirdo special case instruction format. Part of | |
8791 | * the opcode held below in "RH". Doubly nested case would | |
8792 | * result, except that the decoded instruction | |
8793 | */ | |
8794 | START_OF_INSTR(); | |
8795 | FETCH_DECODE_MODRM(mod, rh, rl); | |
8796 | #ifdef DEBUG | |
8797 | if (DEBUG_DECODE()) { | |
8798 | /* XXX DECODE_PRINTF may be changed to something more | |
8799 | general, so that it is important to leave the strings | |
8800 | in the same format, even though the result is that the | |
8801 | above test is done twice. */ | |
8802 | ||
8803 | switch (rh) { | |
8804 | case 0: | |
8805 | DECODE_PRINTF("ROL\t"); | |
8806 | break; | |
8807 | case 1: | |
8808 | DECODE_PRINTF("ROR\t"); | |
8809 | break; | |
8810 | case 2: | |
8811 | DECODE_PRINTF("RCL\t"); | |
8812 | break; | |
8813 | case 3: | |
8814 | DECODE_PRINTF("RCR\t"); | |
8815 | break; | |
8816 | case 4: | |
8817 | DECODE_PRINTF("SHL\t"); | |
8818 | break; | |
8819 | case 5: | |
8820 | DECODE_PRINTF("SHR\t"); | |
8821 | break; | |
8822 | case 6: | |
8823 | DECODE_PRINTF("SAL\t"); | |
8824 | break; | |
8825 | case 7: | |
8826 | DECODE_PRINTF("SAR\t"); | |
8827 | break; | |
8828 | } | |
8829 | } | |
8830 | #endif | |
8831 | /* know operation, decode the mod byte to find the addressing | |
8832 | mode. */ | |
8833 | switch (mod) { | |
8834 | case 0: | |
8835 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
8836 | u32 destval; | |
8837 | ||
8838 | DECODE_PRINTF("DWORD PTR "); | |
8839 | destoffset = decode_rm00_address(rl); | |
8840 | amt = fetch_byte_imm(); | |
8841 | DECODE_PRINTF2(",%x\n", amt); | |
8842 | destval = fetch_data_long(destoffset); | |
8843 | TRACE_AND_STEP(); | |
8844 | destval = (*opcD1_long_operation[rh]) (destval, amt); | |
8845 | store_data_long(destoffset, destval); | |
8846 | } | |
8847 | else { | |
8848 | u16 destval; | |
8849 | ||
8850 | DECODE_PRINTF("WORD PTR "); | |
8851 | destoffset = decode_rm00_address(rl); | |
8852 | amt = fetch_byte_imm(); | |
8853 | DECODE_PRINTF2(",%x\n", amt); | |
8854 | destval = fetch_data_word(destoffset); | |
8855 | TRACE_AND_STEP(); | |
8856 | destval = (*opcD1_word_operation[rh]) (destval, amt); | |
8857 | store_data_word(destoffset, destval); | |
8858 | } | |
8859 | break; | |
8860 | case 1: | |
8861 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
8862 | u32 destval; | |
8863 | ||
8864 | DECODE_PRINTF("DWORD PTR "); | |
8865 | destoffset = decode_rm01_address(rl); | |
8866 | amt = fetch_byte_imm(); | |
8867 | DECODE_PRINTF2(",%x\n", amt); | |
8868 | destval = fetch_data_long(destoffset); | |
8869 | TRACE_AND_STEP(); | |
8870 | destval = (*opcD1_long_operation[rh]) (destval, amt); | |
8871 | store_data_long(destoffset, destval); | |
8872 | } | |
8873 | else { | |
8874 | u16 destval; | |
8875 | ||
8876 | DECODE_PRINTF("WORD PTR "); | |
8877 | destoffset = decode_rm01_address(rl); | |
8878 | amt = fetch_byte_imm(); | |
8879 | DECODE_PRINTF2(",%x\n", amt); | |
8880 | destval = fetch_data_word(destoffset); | |
8881 | TRACE_AND_STEP(); | |
8882 | destval = (*opcD1_word_operation[rh]) (destval, amt); | |
8883 | store_data_word(destoffset, destval); | |
8884 | } | |
8885 | break; | |
8886 | case 2: | |
8887 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
8888 | u32 destval; | |
8889 | ||
8890 | DECODE_PRINTF("DWORD PTR "); | |
8891 | destoffset = decode_rm10_address(rl); | |
8892 | amt = fetch_byte_imm(); | |
8893 | DECODE_PRINTF2(",%x\n", amt); | |
8894 | destval = fetch_data_long(destoffset); | |
8895 | TRACE_AND_STEP(); | |
8896 | destval = (*opcD1_long_operation[rh]) (destval, amt); | |
8897 | store_data_long(destoffset, destval); | |
8898 | } | |
8899 | else { | |
8900 | u16 destval; | |
8901 | ||
8902 | DECODE_PRINTF("WORD PTR "); | |
8903 | destoffset = decode_rm10_address(rl); | |
8904 | amt = fetch_byte_imm(); | |
8905 | DECODE_PRINTF2(",%x\n", amt); | |
8906 | destval = fetch_data_word(destoffset); | |
8907 | TRACE_AND_STEP(); | |
8908 | destval = (*opcD1_word_operation[rh]) (destval, amt); | |
8909 | store_data_word(destoffset, destval); | |
8910 | } | |
8911 | break; | |
8912 | case 3: /* register to register */ | |
8913 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
8914 | u32 *destreg; | |
8915 | ||
8916 | destreg = DECODE_RM_LONG_REGISTER(rl); | |
8917 | amt = fetch_byte_imm(); | |
8918 | DECODE_PRINTF2(",%x\n", amt); | |
8919 | TRACE_AND_STEP(); | |
8920 | *destreg = (*opcD1_long_operation[rh]) (*destreg, amt); | |
8921 | } | |
8922 | else { | |
8923 | u16 *destreg; | |
8924 | ||
8925 | destreg = DECODE_RM_WORD_REGISTER(rl); | |
8926 | amt = fetch_byte_imm(); | |
8927 | DECODE_PRINTF2(",%x\n", amt); | |
8928 | TRACE_AND_STEP(); | |
8929 | *destreg = (*opcD1_word_operation[rh]) (*destreg, amt); | |
8930 | } | |
8931 | break; | |
8932 | } | |
8933 | DECODE_CLEAR_SEGOVR(); | |
8934 | END_OF_INSTR(); | |
8935 | } | |
8936 | ||
8937 | /**************************************************************************** | |
8938 | REMARKS: | |
8939 | Handles opcode 0xc2 | |
8940 | ****************************************************************************/ | |
8941 | static void | |
8942 | x86emuOp_ret_near_IMM(u8 X86EMU_UNUSED(op1)) | |
8943 | { | |
8944 | u16 imm; | |
8945 | ||
8946 | START_OF_INSTR(); | |
8947 | DECODE_PRINTF("RET\t"); | |
8948 | imm = fetch_word_imm(); | |
8949 | DECODE_PRINTF2("%x\n", imm); | |
8950 | RETURN_TRACE("RET", M.x86.saved_cs, M.x86.saved_ip); | |
8951 | TRACE_AND_STEP(); | |
8952 | M.x86.R_IP = pop_word(); | |
8953 | M.x86.R_SP += imm; | |
8954 | DECODE_CLEAR_SEGOVR(); | |
8955 | END_OF_INSTR(); | |
8956 | } | |
8957 | ||
8958 | /**************************************************************************** | |
8959 | REMARKS: | |
8960 | Handles opcode 0xc3 | |
8961 | ****************************************************************************/ | |
8962 | static void | |
8963 | x86emuOp_ret_near(u8 X86EMU_UNUSED(op1)) | |
8964 | { | |
8965 | START_OF_INSTR(); | |
8966 | DECODE_PRINTF("RET\n"); | |
8967 | RETURN_TRACE("RET", M.x86.saved_cs, M.x86.saved_ip); | |
8968 | TRACE_AND_STEP(); | |
8969 | M.x86.R_IP = pop_word(); | |
8970 | DECODE_CLEAR_SEGOVR(); | |
8971 | END_OF_INSTR(); | |
8972 | } | |
8973 | ||
8974 | /**************************************************************************** | |
8975 | REMARKS: | |
8976 | Handles opcode 0xc4 | |
8977 | ****************************************************************************/ | |
8978 | static void | |
8979 | x86emuOp_les_R_IMM(u8 X86EMU_UNUSED(op1)) | |
8980 | { | |
8981 | int mod, rh, rl; | |
8982 | u16 *dstreg; | |
8983 | uint srcoffset; | |
8984 | ||
8985 | START_OF_INSTR(); | |
8986 | DECODE_PRINTF("LES\t"); | |
8987 | FETCH_DECODE_MODRM(mod, rh, rl); | |
8988 | switch (mod) { | |
8989 | case 0: | |
8990 | dstreg = DECODE_RM_WORD_REGISTER(rh); | |
8991 | DECODE_PRINTF(","); | |
8992 | srcoffset = decode_rm00_address(rl); | |
8993 | DECODE_PRINTF("\n"); | |
8994 | TRACE_AND_STEP(); | |
8995 | *dstreg = fetch_data_word(srcoffset); | |
8996 | M.x86.R_ES = fetch_data_word(srcoffset + 2); | |
8997 | break; | |
8998 | case 1: | |
8999 | dstreg = DECODE_RM_WORD_REGISTER(rh); | |
9000 | DECODE_PRINTF(","); | |
9001 | srcoffset = decode_rm01_address(rl); | |
9002 | DECODE_PRINTF("\n"); | |
9003 | TRACE_AND_STEP(); | |
9004 | *dstreg = fetch_data_word(srcoffset); | |
9005 | M.x86.R_ES = fetch_data_word(srcoffset + 2); | |
9006 | break; | |
9007 | case 2: | |
9008 | dstreg = DECODE_RM_WORD_REGISTER(rh); | |
9009 | DECODE_PRINTF(","); | |
9010 | srcoffset = decode_rm10_address(rl); | |
9011 | DECODE_PRINTF("\n"); | |
9012 | TRACE_AND_STEP(); | |
9013 | *dstreg = fetch_data_word(srcoffset); | |
9014 | M.x86.R_ES = fetch_data_word(srcoffset + 2); | |
9015 | break; | |
9016 | case 3: /* register to register */ | |
9017 | /* UNDEFINED! */ | |
9018 | TRACE_AND_STEP(); | |
9019 | } | |
9020 | DECODE_CLEAR_SEGOVR(); | |
9021 | END_OF_INSTR(); | |
9022 | } | |
9023 | ||
9024 | /**************************************************************************** | |
9025 | REMARKS: | |
9026 | Handles opcode 0xc5 | |
9027 | ****************************************************************************/ | |
9028 | static void | |
9029 | x86emuOp_lds_R_IMM(u8 X86EMU_UNUSED(op1)) | |
9030 | { | |
9031 | int mod, rh, rl; | |
9032 | u16 *dstreg; | |
9033 | uint srcoffset; | |
9034 | ||
9035 | START_OF_INSTR(); | |
9036 | DECODE_PRINTF("LDS\t"); | |
9037 | FETCH_DECODE_MODRM(mod, rh, rl); | |
9038 | switch (mod) { | |
9039 | case 0: | |
9040 | dstreg = DECODE_RM_WORD_REGISTER(rh); | |
9041 | DECODE_PRINTF(","); | |
9042 | srcoffset = decode_rm00_address(rl); | |
9043 | DECODE_PRINTF("\n"); | |
9044 | TRACE_AND_STEP(); | |
9045 | *dstreg = fetch_data_word(srcoffset); | |
9046 | M.x86.R_DS = fetch_data_word(srcoffset + 2); | |
9047 | break; | |
9048 | case 1: | |
9049 | dstreg = DECODE_RM_WORD_REGISTER(rh); | |
9050 | DECODE_PRINTF(","); | |
9051 | srcoffset = decode_rm01_address(rl); | |
9052 | DECODE_PRINTF("\n"); | |
9053 | TRACE_AND_STEP(); | |
9054 | *dstreg = fetch_data_word(srcoffset); | |
9055 | M.x86.R_DS = fetch_data_word(srcoffset + 2); | |
9056 | break; | |
9057 | case 2: | |
9058 | dstreg = DECODE_RM_WORD_REGISTER(rh); | |
9059 | DECODE_PRINTF(","); | |
9060 | srcoffset = decode_rm10_address(rl); | |
9061 | DECODE_PRINTF("\n"); | |
9062 | TRACE_AND_STEP(); | |
9063 | *dstreg = fetch_data_word(srcoffset); | |
9064 | M.x86.R_DS = fetch_data_word(srcoffset + 2); | |
9065 | break; | |
9066 | case 3: /* register to register */ | |
9067 | /* UNDEFINED! */ | |
9068 | TRACE_AND_STEP(); | |
9069 | } | |
9070 | DECODE_CLEAR_SEGOVR(); | |
9071 | END_OF_INSTR(); | |
9072 | } | |
9073 | ||
9074 | /**************************************************************************** | |
9075 | REMARKS: | |
9076 | Handles opcode 0xc6 | |
9077 | ****************************************************************************/ | |
9078 | static void | |
9079 | x86emuOp_mov_byte_RM_IMM(u8 X86EMU_UNUSED(op1)) | |
9080 | { | |
9081 | int mod, rl, rh; | |
9082 | u8 *destreg; | |
9083 | uint destoffset; | |
9084 | u8 imm; | |
9085 | ||
9086 | START_OF_INSTR(); | |
9087 | DECODE_PRINTF("MOV\t"); | |
9088 | FETCH_DECODE_MODRM(mod, rh, rl); | |
9089 | if (rh != 0) { | |
9090 | DECODE_PRINTF("ILLEGAL DECODE OF OPCODE c6\n"); | |
9091 | HALT_SYS(); | |
9092 | } | |
9093 | switch (mod) { | |
9094 | case 0: | |
9095 | DECODE_PRINTF("BYTE PTR "); | |
9096 | destoffset = decode_rm00_address(rl); | |
9097 | imm = fetch_byte_imm(); | |
9098 | DECODE_PRINTF2(",%2x\n", imm); | |
9099 | TRACE_AND_STEP(); | |
9100 | store_data_byte(destoffset, imm); | |
9101 | break; | |
9102 | case 1: | |
9103 | DECODE_PRINTF("BYTE PTR "); | |
9104 | destoffset = decode_rm01_address(rl); | |
9105 | imm = fetch_byte_imm(); | |
9106 | DECODE_PRINTF2(",%2x\n", imm); | |
9107 | TRACE_AND_STEP(); | |
9108 | store_data_byte(destoffset, imm); | |
9109 | break; | |
9110 | case 2: | |
9111 | DECODE_PRINTF("BYTE PTR "); | |
9112 | destoffset = decode_rm10_address(rl); | |
9113 | imm = fetch_byte_imm(); | |
9114 | DECODE_PRINTF2(",%2x\n", imm); | |
9115 | TRACE_AND_STEP(); | |
9116 | store_data_byte(destoffset, imm); | |
9117 | break; | |
9118 | case 3: /* register to register */ | |
9119 | destreg = DECODE_RM_BYTE_REGISTER(rl); | |
9120 | imm = fetch_byte_imm(); | |
9121 | DECODE_PRINTF2(",%2x\n", imm); | |
9122 | TRACE_AND_STEP(); | |
9123 | *destreg = imm; | |
9124 | break; | |
9125 | } | |
9126 | DECODE_CLEAR_SEGOVR(); | |
9127 | END_OF_INSTR(); | |
9128 | } | |
9129 | ||
9130 | /**************************************************************************** | |
9131 | REMARKS: | |
9132 | Handles opcode 0xc7 | |
9133 | ****************************************************************************/ | |
9134 | static void | |
9135 | x86emuOp_mov_word_RM_IMM(u8 X86EMU_UNUSED(op1)) | |
9136 | { | |
9137 | int mod, rl, rh; | |
9138 | uint destoffset; | |
9139 | ||
9140 | START_OF_INSTR(); | |
9141 | DECODE_PRINTF("MOV\t"); | |
9142 | FETCH_DECODE_MODRM(mod, rh, rl); | |
9143 | if (rh != 0) { | |
9144 | DECODE_PRINTF("ILLEGAL DECODE OF OPCODE 8F\n"); | |
9145 | HALT_SYS(); | |
9146 | } | |
9147 | switch (mod) { | |
9148 | case 0: | |
9149 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
9150 | u32 imm; | |
9151 | ||
9152 | DECODE_PRINTF("DWORD PTR "); | |
9153 | destoffset = decode_rm00_address(rl); | |
9154 | imm = fetch_long_imm(); | |
9155 | DECODE_PRINTF2(",%x\n", imm); | |
9156 | TRACE_AND_STEP(); | |
9157 | store_data_long(destoffset, imm); | |
9158 | } | |
9159 | else { | |
9160 | u16 imm; | |
9161 | ||
9162 | DECODE_PRINTF("WORD PTR "); | |
9163 | destoffset = decode_rm00_address(rl); | |
9164 | imm = fetch_word_imm(); | |
9165 | DECODE_PRINTF2(",%x\n", imm); | |
9166 | TRACE_AND_STEP(); | |
9167 | store_data_word(destoffset, imm); | |
9168 | } | |
9169 | break; | |
9170 | case 1: | |
9171 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
9172 | u32 imm; | |
9173 | ||
9174 | DECODE_PRINTF("DWORD PTR "); | |
9175 | destoffset = decode_rm01_address(rl); | |
9176 | imm = fetch_long_imm(); | |
9177 | DECODE_PRINTF2(",%x\n", imm); | |
9178 | TRACE_AND_STEP(); | |
9179 | store_data_long(destoffset, imm); | |
9180 | } | |
9181 | else { | |
9182 | u16 imm; | |
9183 | ||
9184 | DECODE_PRINTF("WORD PTR "); | |
9185 | destoffset = decode_rm01_address(rl); | |
9186 | imm = fetch_word_imm(); | |
9187 | DECODE_PRINTF2(",%x\n", imm); | |
9188 | TRACE_AND_STEP(); | |
9189 | store_data_word(destoffset, imm); | |
9190 | } | |
9191 | break; | |
9192 | case 2: | |
9193 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
9194 | u32 imm; | |
9195 | ||
9196 | DECODE_PRINTF("DWORD PTR "); | |
9197 | destoffset = decode_rm10_address(rl); | |
9198 | imm = fetch_long_imm(); | |
9199 | DECODE_PRINTF2(",%x\n", imm); | |
9200 | TRACE_AND_STEP(); | |
9201 | store_data_long(destoffset, imm); | |
9202 | } | |
9203 | else { | |
9204 | u16 imm; | |
9205 | ||
9206 | DECODE_PRINTF("WORD PTR "); | |
9207 | destoffset = decode_rm10_address(rl); | |
9208 | imm = fetch_word_imm(); | |
9209 | DECODE_PRINTF2(",%x\n", imm); | |
9210 | TRACE_AND_STEP(); | |
9211 | store_data_word(destoffset, imm); | |
9212 | } | |
9213 | break; | |
9214 | case 3: /* register to register */ | |
9215 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
9216 | u32 *destreg; | |
9217 | u32 imm; | |
9218 | ||
9219 | destreg = DECODE_RM_LONG_REGISTER(rl); | |
9220 | imm = fetch_long_imm(); | |
9221 | DECODE_PRINTF2(",%x\n", imm); | |
9222 | TRACE_AND_STEP(); | |
9223 | *destreg = imm; | |
9224 | } | |
9225 | else { | |
9226 | u16 *destreg; | |
9227 | u16 imm; | |
9228 | ||
9229 | destreg = DECODE_RM_WORD_REGISTER(rl); | |
9230 | imm = fetch_word_imm(); | |
9231 | DECODE_PRINTF2(",%x\n", imm); | |
9232 | TRACE_AND_STEP(); | |
9233 | *destreg = imm; | |
9234 | } | |
9235 | break; | |
9236 | } | |
9237 | DECODE_CLEAR_SEGOVR(); | |
9238 | END_OF_INSTR(); | |
9239 | } | |
9240 | ||
9241 | /**************************************************************************** | |
9242 | REMARKS: | |
9243 | Handles opcode 0xc8 | |
9244 | ****************************************************************************/ | |
9245 | static void | |
9246 | x86emuOp_enter(u8 X86EMU_UNUSED(op1)) | |
9247 | { | |
9248 | u16 local, frame_pointer; | |
9249 | u8 nesting; | |
9250 | int i; | |
9251 | ||
9252 | START_OF_INSTR(); | |
9253 | local = fetch_word_imm(); | |
9254 | nesting = fetch_byte_imm(); | |
9255 | DECODE_PRINTF2("ENTER %x\n", local); | |
9256 | DECODE_PRINTF2(",%x\n", nesting); | |
9257 | TRACE_AND_STEP(); | |
9258 | push_word(M.x86.R_BP); | |
9259 | frame_pointer = M.x86.R_SP; | |
9260 | if (nesting > 0) { | |
9261 | for (i = 1; i < nesting; i++) { | |
9262 | M.x86.R_BP -= 2; | |
9263 | push_word(fetch_data_word_abs(M.x86.R_SS, M.x86.R_BP)); | |
9264 | } | |
9265 | push_word(frame_pointer); | |
9266 | } | |
9267 | M.x86.R_BP = frame_pointer; | |
9268 | M.x86.R_SP = (u16) (M.x86.R_SP - local); | |
9269 | DECODE_CLEAR_SEGOVR(); | |
9270 | END_OF_INSTR(); | |
9271 | } | |
9272 | ||
9273 | /**************************************************************************** | |
9274 | REMARKS: | |
9275 | Handles opcode 0xc9 | |
9276 | ****************************************************************************/ | |
9277 | static void | |
9278 | x86emuOp_leave(u8 X86EMU_UNUSED(op1)) | |
9279 | { | |
9280 | START_OF_INSTR(); | |
9281 | DECODE_PRINTF("LEAVE\n"); | |
9282 | TRACE_AND_STEP(); | |
9283 | M.x86.R_SP = M.x86.R_BP; | |
9284 | M.x86.R_BP = pop_word(); | |
9285 | DECODE_CLEAR_SEGOVR(); | |
9286 | END_OF_INSTR(); | |
9287 | } | |
9288 | ||
9289 | /**************************************************************************** | |
9290 | REMARKS: | |
9291 | Handles opcode 0xca | |
9292 | ****************************************************************************/ | |
9293 | static void | |
9294 | x86emuOp_ret_far_IMM(u8 X86EMU_UNUSED(op1)) | |
9295 | { | |
9296 | u16 imm; | |
9297 | ||
9298 | START_OF_INSTR(); | |
9299 | DECODE_PRINTF("RETF\t"); | |
9300 | imm = fetch_word_imm(); | |
9301 | DECODE_PRINTF2("%x\n", imm); | |
9302 | RETURN_TRACE("RETF", M.x86.saved_cs, M.x86.saved_ip); | |
9303 | TRACE_AND_STEP(); | |
9304 | M.x86.R_IP = pop_word(); | |
9305 | M.x86.R_CS = pop_word(); | |
9306 | M.x86.R_SP += imm; | |
9307 | DECODE_CLEAR_SEGOVR(); | |
9308 | END_OF_INSTR(); | |
9309 | } | |
9310 | ||
9311 | /**************************************************************************** | |
9312 | REMARKS: | |
9313 | Handles opcode 0xcb | |
9314 | ****************************************************************************/ | |
9315 | static void | |
9316 | x86emuOp_ret_far(u8 X86EMU_UNUSED(op1)) | |
9317 | { | |
9318 | START_OF_INSTR(); | |
9319 | DECODE_PRINTF("RETF\n"); | |
9320 | RETURN_TRACE("RETF", M.x86.saved_cs, M.x86.saved_ip); | |
9321 | TRACE_AND_STEP(); | |
9322 | M.x86.R_IP = pop_word(); | |
9323 | M.x86.R_CS = pop_word(); | |
9324 | DECODE_CLEAR_SEGOVR(); | |
9325 | END_OF_INSTR(); | |
9326 | } | |
9327 | ||
9328 | /**************************************************************************** | |
9329 | REMARKS: | |
9330 | Handles opcode 0xcc | |
9331 | ****************************************************************************/ | |
9332 | static void | |
9333 | x86emuOp_int3(u8 X86EMU_UNUSED(op1)) | |
9334 | { | |
9335 | START_OF_INSTR(); | |
9336 | DECODE_PRINTF("INT 3\n"); | |
9337 | TRACE_AND_STEP(); | |
9338 | if (_X86EMU_intrTab[3]) { | |
9339 | (*_X86EMU_intrTab[3]) (3); | |
9340 | } | |
9341 | else { | |
9342 | push_word((u16) M.x86.R_FLG); | |
9343 | CLEAR_FLAG(F_IF); | |
9344 | CLEAR_FLAG(F_TF); | |
9345 | push_word(M.x86.R_CS); | |
9346 | M.x86.R_CS = mem_access_word(3 * 4 + 2); | |
9347 | push_word(M.x86.R_IP); | |
9348 | M.x86.R_IP = mem_access_word(3 * 4); | |
9349 | } | |
9350 | DECODE_CLEAR_SEGOVR(); | |
9351 | END_OF_INSTR(); | |
9352 | } | |
9353 | ||
9354 | /**************************************************************************** | |
9355 | REMARKS: | |
9356 | Handles opcode 0xcd | |
9357 | ****************************************************************************/ | |
9358 | static void | |
9359 | x86emuOp_int_IMM(u8 X86EMU_UNUSED(op1)) | |
9360 | { | |
9361 | u8 intnum; | |
9362 | ||
9363 | START_OF_INSTR(); | |
9364 | DECODE_PRINTF("INT\t"); | |
9365 | intnum = fetch_byte_imm(); | |
9366 | DECODE_PRINTF2("%x\n", intnum); | |
9367 | TRACE_AND_STEP(); | |
9368 | if (_X86EMU_intrTab[intnum]) { | |
9369 | (*_X86EMU_intrTab[intnum]) (intnum); | |
9370 | } | |
9371 | else { | |
9372 | push_word((u16) M.x86.R_FLG); | |
9373 | CLEAR_FLAG(F_IF); | |
9374 | CLEAR_FLAG(F_TF); | |
9375 | push_word(M.x86.R_CS); | |
9376 | M.x86.R_CS = mem_access_word(intnum * 4 + 2); | |
9377 | push_word(M.x86.R_IP); | |
9378 | M.x86.R_IP = mem_access_word(intnum * 4); | |
9379 | } | |
9380 | DECODE_CLEAR_SEGOVR(); | |
9381 | END_OF_INSTR(); | |
9382 | } | |
9383 | ||
9384 | /**************************************************************************** | |
9385 | REMARKS: | |
9386 | Handles opcode 0xce | |
9387 | ****************************************************************************/ | |
9388 | static void | |
9389 | x86emuOp_into(u8 X86EMU_UNUSED(op1)) | |
9390 | { | |
9391 | START_OF_INSTR(); | |
9392 | DECODE_PRINTF("INTO\n"); | |
9393 | TRACE_AND_STEP(); | |
9394 | if (ACCESS_FLAG(F_OF)) { | |
9395 | if (_X86EMU_intrTab[4]) { | |
9396 | (*_X86EMU_intrTab[4]) (4); | |
9397 | } | |
9398 | else { | |
9399 | push_word((u16) M.x86.R_FLG); | |
9400 | CLEAR_FLAG(F_IF); | |
9401 | CLEAR_FLAG(F_TF); | |
9402 | push_word(M.x86.R_CS); | |
9403 | M.x86.R_CS = mem_access_word(4 * 4 + 2); | |
9404 | push_word(M.x86.R_IP); | |
9405 | M.x86.R_IP = mem_access_word(4 * 4); | |
9406 | } | |
9407 | } | |
9408 | DECODE_CLEAR_SEGOVR(); | |
9409 | END_OF_INSTR(); | |
9410 | } | |
9411 | ||
9412 | /**************************************************************************** | |
9413 | REMARKS: | |
9414 | Handles opcode 0xcf | |
9415 | ****************************************************************************/ | |
9416 | static void | |
9417 | x86emuOp_iret(u8 X86EMU_UNUSED(op1)) | |
9418 | { | |
9419 | START_OF_INSTR(); | |
9420 | DECODE_PRINTF("IRET\n"); | |
9421 | ||
9422 | TRACE_AND_STEP(); | |
9423 | ||
9424 | M.x86.R_IP = pop_word(); | |
9425 | M.x86.R_CS = pop_word(); | |
9426 | M.x86.R_FLG = pop_word(); | |
9427 | DECODE_CLEAR_SEGOVR(); | |
9428 | END_OF_INSTR(); | |
9429 | } | |
9430 | ||
9431 | /**************************************************************************** | |
9432 | REMARKS: | |
9433 | Handles opcode 0xd0 | |
9434 | ****************************************************************************/ | |
9435 | static void | |
9436 | x86emuOp_opcD0_byte_RM_1(u8 X86EMU_UNUSED(op1)) | |
9437 | { | |
9438 | int mod, rl, rh; | |
9439 | u8 *destreg; | |
9440 | uint destoffset; | |
9441 | u8 destval; | |
9442 | ||
9443 | /* | |
9444 | * Yet another weirdo special case instruction format. Part of | |
9445 | * the opcode held below in "RH". Doubly nested case would | |
9446 | * result, except that the decoded instruction | |
9447 | */ | |
9448 | START_OF_INSTR(); | |
9449 | FETCH_DECODE_MODRM(mod, rh, rl); | |
9450 | #ifdef DEBUG | |
9451 | if (DEBUG_DECODE()) { | |
9452 | /* XXX DECODE_PRINTF may be changed to something more | |
9453 | general, so that it is important to leave the strings | |
9454 | in the same format, even though the result is that the | |
9455 | above test is done twice. */ | |
9456 | switch (rh) { | |
9457 | case 0: | |
9458 | DECODE_PRINTF("ROL\t"); | |
9459 | break; | |
9460 | case 1: | |
9461 | DECODE_PRINTF("ROR\t"); | |
9462 | break; | |
9463 | case 2: | |
9464 | DECODE_PRINTF("RCL\t"); | |
9465 | break; | |
9466 | case 3: | |
9467 | DECODE_PRINTF("RCR\t"); | |
9468 | break; | |
9469 | case 4: | |
9470 | DECODE_PRINTF("SHL\t"); | |
9471 | break; | |
9472 | case 5: | |
9473 | DECODE_PRINTF("SHR\t"); | |
9474 | break; | |
9475 | case 6: | |
9476 | DECODE_PRINTF("SAL\t"); | |
9477 | break; | |
9478 | case 7: | |
9479 | DECODE_PRINTF("SAR\t"); | |
9480 | break; | |
9481 | } | |
9482 | } | |
9483 | #endif | |
9484 | /* know operation, decode the mod byte to find the addressing | |
9485 | mode. */ | |
9486 | switch (mod) { | |
9487 | case 0: | |
9488 | DECODE_PRINTF("BYTE PTR "); | |
9489 | destoffset = decode_rm00_address(rl); | |
9490 | DECODE_PRINTF(",1\n"); | |
9491 | destval = fetch_data_byte(destoffset); | |
9492 | TRACE_AND_STEP(); | |
9493 | destval = (*opcD0_byte_operation[rh]) (destval, 1); | |
9494 | store_data_byte(destoffset, destval); | |
9495 | break; | |
9496 | case 1: | |
9497 | DECODE_PRINTF("BYTE PTR "); | |
9498 | destoffset = decode_rm01_address(rl); | |
9499 | DECODE_PRINTF(",1\n"); | |
9500 | destval = fetch_data_byte(destoffset); | |
9501 | TRACE_AND_STEP(); | |
9502 | destval = (*opcD0_byte_operation[rh]) (destval, 1); | |
9503 | store_data_byte(destoffset, destval); | |
9504 | break; | |
9505 | case 2: | |
9506 | DECODE_PRINTF("BYTE PTR "); | |
9507 | destoffset = decode_rm10_address(rl); | |
9508 | DECODE_PRINTF(",1\n"); | |
9509 | destval = fetch_data_byte(destoffset); | |
9510 | TRACE_AND_STEP(); | |
9511 | destval = (*opcD0_byte_operation[rh]) (destval, 1); | |
9512 | store_data_byte(destoffset, destval); | |
9513 | break; | |
9514 | case 3: /* register to register */ | |
9515 | destreg = DECODE_RM_BYTE_REGISTER(rl); | |
9516 | DECODE_PRINTF(",1\n"); | |
9517 | TRACE_AND_STEP(); | |
9518 | destval = (*opcD0_byte_operation[rh]) (*destreg, 1); | |
9519 | *destreg = destval; | |
9520 | break; | |
9521 | } | |
9522 | DECODE_CLEAR_SEGOVR(); | |
9523 | END_OF_INSTR(); | |
9524 | } | |
9525 | ||
9526 | /**************************************************************************** | |
9527 | REMARKS: | |
9528 | Handles opcode 0xd1 | |
9529 | ****************************************************************************/ | |
9530 | static void | |
9531 | x86emuOp_opcD1_word_RM_1(u8 X86EMU_UNUSED(op1)) | |
9532 | { | |
9533 | int mod, rl, rh; | |
9534 | uint destoffset; | |
9535 | ||
9536 | /* | |
9537 | * Yet another weirdo special case instruction format. Part of | |
9538 | * the opcode held below in "RH". Doubly nested case would | |
9539 | * result, except that the decoded instruction | |
9540 | */ | |
9541 | START_OF_INSTR(); | |
9542 | FETCH_DECODE_MODRM(mod, rh, rl); | |
9543 | #ifdef DEBUG | |
9544 | if (DEBUG_DECODE()) { | |
9545 | /* XXX DECODE_PRINTF may be changed to something more | |
9546 | general, so that it is important to leave the strings | |
9547 | in the same format, even though the result is that the | |
9548 | above test is done twice. */ | |
9549 | switch (rh) { | |
9550 | case 0: | |
9551 | DECODE_PRINTF("ROL\t"); | |
9552 | break; | |
9553 | case 1: | |
9554 | DECODE_PRINTF("ROR\t"); | |
9555 | break; | |
9556 | case 2: | |
9557 | DECODE_PRINTF("RCL\t"); | |
9558 | break; | |
9559 | case 3: | |
9560 | DECODE_PRINTF("RCR\t"); | |
9561 | break; | |
9562 | case 4: | |
9563 | DECODE_PRINTF("SHL\t"); | |
9564 | break; | |
9565 | case 5: | |
9566 | DECODE_PRINTF("SHR\t"); | |
9567 | break; | |
9568 | case 6: | |
9569 | DECODE_PRINTF("SAL\t"); | |
9570 | break; | |
9571 | case 7: | |
9572 | DECODE_PRINTF("SAR\t"); | |
9573 | break; | |
9574 | } | |
9575 | } | |
9576 | #endif | |
9577 | /* know operation, decode the mod byte to find the addressing | |
9578 | mode. */ | |
9579 | switch (mod) { | |
9580 | case 0: | |
9581 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
9582 | u32 destval; | |
9583 | ||
9584 | DECODE_PRINTF("DWORD PTR "); | |
9585 | destoffset = decode_rm00_address(rl); | |
9586 | DECODE_PRINTF(",1\n"); | |
9587 | destval = fetch_data_long(destoffset); | |
9588 | TRACE_AND_STEP(); | |
9589 | destval = (*opcD1_long_operation[rh]) (destval, 1); | |
9590 | store_data_long(destoffset, destval); | |
9591 | } | |
9592 | else { | |
9593 | u16 destval; | |
9594 | ||
9595 | DECODE_PRINTF("WORD PTR "); | |
9596 | destoffset = decode_rm00_address(rl); | |
9597 | DECODE_PRINTF(",1\n"); | |
9598 | destval = fetch_data_word(destoffset); | |
9599 | TRACE_AND_STEP(); | |
9600 | destval = (*opcD1_word_operation[rh]) (destval, 1); | |
9601 | store_data_word(destoffset, destval); | |
9602 | } | |
9603 | break; | |
9604 | case 1: | |
9605 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
9606 | u32 destval; | |
9607 | ||
9608 | DECODE_PRINTF("DWORD PTR "); | |
9609 | destoffset = decode_rm01_address(rl); | |
9610 | DECODE_PRINTF(",1\n"); | |
9611 | destval = fetch_data_long(destoffset); | |
9612 | TRACE_AND_STEP(); | |
9613 | destval = (*opcD1_long_operation[rh]) (destval, 1); | |
9614 | store_data_long(destoffset, destval); | |
9615 | } | |
9616 | else { | |
9617 | u16 destval; | |
9618 | ||
9619 | DECODE_PRINTF("WORD PTR "); | |
9620 | destoffset = decode_rm01_address(rl); | |
9621 | DECODE_PRINTF(",1\n"); | |
9622 | destval = fetch_data_word(destoffset); | |
9623 | TRACE_AND_STEP(); | |
9624 | destval = (*opcD1_word_operation[rh]) (destval, 1); | |
9625 | store_data_word(destoffset, destval); | |
9626 | } | |
9627 | break; | |
9628 | case 2: | |
9629 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
9630 | u32 destval; | |
9631 | ||
9632 | DECODE_PRINTF("DWORD PTR "); | |
9633 | destoffset = decode_rm10_address(rl); | |
9634 | DECODE_PRINTF(",1\n"); | |
9635 | destval = fetch_data_long(destoffset); | |
9636 | TRACE_AND_STEP(); | |
9637 | destval = (*opcD1_long_operation[rh]) (destval, 1); | |
9638 | store_data_long(destoffset, destval); | |
9639 | } | |
9640 | else { | |
9641 | u16 destval; | |
9642 | ||
9643 | DECODE_PRINTF("BYTE PTR "); | |
9644 | destoffset = decode_rm10_address(rl); | |
9645 | DECODE_PRINTF(",1\n"); | |
9646 | destval = fetch_data_word(destoffset); | |
9647 | TRACE_AND_STEP(); | |
9648 | destval = (*opcD1_word_operation[rh]) (destval, 1); | |
9649 | store_data_word(destoffset, destval); | |
9650 | } | |
9651 | break; | |
9652 | case 3: /* register to register */ | |
9653 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
9654 | u32 destval; | |
9655 | u32 *destreg; | |
9656 | ||
9657 | destreg = DECODE_RM_LONG_REGISTER(rl); | |
9658 | DECODE_PRINTF(",1\n"); | |
9659 | TRACE_AND_STEP(); | |
9660 | destval = (*opcD1_long_operation[rh]) (*destreg, 1); | |
9661 | *destreg = destval; | |
9662 | } | |
9663 | else { | |
9664 | u16 destval; | |
9665 | u16 *destreg; | |
9666 | ||
9667 | destreg = DECODE_RM_WORD_REGISTER(rl); | |
9668 | DECODE_PRINTF(",1\n"); | |
9669 | TRACE_AND_STEP(); | |
9670 | destval = (*opcD1_word_operation[rh]) (*destreg, 1); | |
9671 | *destreg = destval; | |
9672 | } | |
9673 | break; | |
9674 | } | |
9675 | DECODE_CLEAR_SEGOVR(); | |
9676 | END_OF_INSTR(); | |
9677 | } | |
9678 | ||
9679 | /**************************************************************************** | |
9680 | REMARKS: | |
9681 | Handles opcode 0xd2 | |
9682 | ****************************************************************************/ | |
9683 | static void | |
9684 | x86emuOp_opcD2_byte_RM_CL(u8 X86EMU_UNUSED(op1)) | |
9685 | { | |
9686 | int mod, rl, rh; | |
9687 | u8 *destreg; | |
9688 | uint destoffset; | |
9689 | u8 destval; | |
9690 | u8 amt; | |
9691 | ||
9692 | /* | |
9693 | * Yet another weirdo special case instruction format. Part of | |
9694 | * the opcode held below in "RH". Doubly nested case would | |
9695 | * result, except that the decoded instruction | |
9696 | */ | |
9697 | START_OF_INSTR(); | |
9698 | FETCH_DECODE_MODRM(mod, rh, rl); | |
9699 | #ifdef DEBUG | |
9700 | if (DEBUG_DECODE()) { | |
9701 | /* XXX DECODE_PRINTF may be changed to something more | |
9702 | general, so that it is important to leave the strings | |
9703 | in the same format, even though the result is that the | |
9704 | above test is done twice. */ | |
9705 | switch (rh) { | |
9706 | case 0: | |
9707 | DECODE_PRINTF("ROL\t"); | |
9708 | break; | |
9709 | case 1: | |
9710 | DECODE_PRINTF("ROR\t"); | |
9711 | break; | |
9712 | case 2: | |
9713 | DECODE_PRINTF("RCL\t"); | |
9714 | break; | |
9715 | case 3: | |
9716 | DECODE_PRINTF("RCR\t"); | |
9717 | break; | |
9718 | case 4: | |
9719 | DECODE_PRINTF("SHL\t"); | |
9720 | break; | |
9721 | case 5: | |
9722 | DECODE_PRINTF("SHR\t"); | |
9723 | break; | |
9724 | case 6: | |
9725 | DECODE_PRINTF("SAL\t"); | |
9726 | break; | |
9727 | case 7: | |
9728 | DECODE_PRINTF("SAR\t"); | |
9729 | break; | |
9730 | } | |
9731 | } | |
9732 | #endif | |
9733 | /* know operation, decode the mod byte to find the addressing | |
9734 | mode. */ | |
9735 | amt = M.x86.R_CL; | |
9736 | switch (mod) { | |
9737 | case 0: | |
9738 | DECODE_PRINTF("BYTE PTR "); | |
9739 | destoffset = decode_rm00_address(rl); | |
9740 | DECODE_PRINTF(",CL\n"); | |
9741 | destval = fetch_data_byte(destoffset); | |
9742 | TRACE_AND_STEP(); | |
9743 | destval = (*opcD0_byte_operation[rh]) (destval, amt); | |
9744 | store_data_byte(destoffset, destval); | |
9745 | break; | |
9746 | case 1: | |
9747 | DECODE_PRINTF("BYTE PTR "); | |
9748 | destoffset = decode_rm01_address(rl); | |
9749 | DECODE_PRINTF(",CL\n"); | |
9750 | destval = fetch_data_byte(destoffset); | |
9751 | TRACE_AND_STEP(); | |
9752 | destval = (*opcD0_byte_operation[rh]) (destval, amt); | |
9753 | store_data_byte(destoffset, destval); | |
9754 | break; | |
9755 | case 2: | |
9756 | DECODE_PRINTF("BYTE PTR "); | |
9757 | destoffset = decode_rm10_address(rl); | |
9758 | DECODE_PRINTF(",CL\n"); | |
9759 | destval = fetch_data_byte(destoffset); | |
9760 | TRACE_AND_STEP(); | |
9761 | destval = (*opcD0_byte_operation[rh]) (destval, amt); | |
9762 | store_data_byte(destoffset, destval); | |
9763 | break; | |
9764 | case 3: /* register to register */ | |
9765 | destreg = DECODE_RM_BYTE_REGISTER(rl); | |
9766 | DECODE_PRINTF(",CL\n"); | |
9767 | TRACE_AND_STEP(); | |
9768 | destval = (*opcD0_byte_operation[rh]) (*destreg, amt); | |
9769 | *destreg = destval; | |
9770 | break; | |
9771 | } | |
9772 | DECODE_CLEAR_SEGOVR(); | |
9773 | END_OF_INSTR(); | |
9774 | } | |
9775 | ||
9776 | /**************************************************************************** | |
9777 | REMARKS: | |
9778 | Handles opcode 0xd3 | |
9779 | ****************************************************************************/ | |
9780 | static void | |
9781 | x86emuOp_opcD3_word_RM_CL(u8 X86EMU_UNUSED(op1)) | |
9782 | { | |
9783 | int mod, rl, rh; | |
9784 | uint destoffset; | |
9785 | u8 amt; | |
9786 | ||
9787 | /* | |
9788 | * Yet another weirdo special case instruction format. Part of | |
9789 | * the opcode held below in "RH". Doubly nested case would | |
9790 | * result, except that the decoded instruction | |
9791 | */ | |
9792 | START_OF_INSTR(); | |
9793 | FETCH_DECODE_MODRM(mod, rh, rl); | |
9794 | #ifdef DEBUG | |
9795 | if (DEBUG_DECODE()) { | |
9796 | /* XXX DECODE_PRINTF may be changed to something more | |
9797 | general, so that it is important to leave the strings | |
9798 | in the same format, even though the result is that the | |
9799 | above test is done twice. */ | |
9800 | switch (rh) { | |
9801 | case 0: | |
9802 | DECODE_PRINTF("ROL\t"); | |
9803 | break; | |
9804 | case 1: | |
9805 | DECODE_PRINTF("ROR\t"); | |
9806 | break; | |
9807 | case 2: | |
9808 | DECODE_PRINTF("RCL\t"); | |
9809 | break; | |
9810 | case 3: | |
9811 | DECODE_PRINTF("RCR\t"); | |
9812 | break; | |
9813 | case 4: | |
9814 | DECODE_PRINTF("SHL\t"); | |
9815 | break; | |
9816 | case 5: | |
9817 | DECODE_PRINTF("SHR\t"); | |
9818 | break; | |
9819 | case 6: | |
9820 | DECODE_PRINTF("SAL\t"); | |
9821 | break; | |
9822 | case 7: | |
9823 | DECODE_PRINTF("SAR\t"); | |
9824 | break; | |
9825 | } | |
9826 | } | |
9827 | #endif | |
9828 | /* know operation, decode the mod byte to find the addressing | |
9829 | mode. */ | |
9830 | amt = M.x86.R_CL; | |
9831 | switch (mod) { | |
9832 | case 0: | |
9833 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
9834 | u32 destval; | |
9835 | ||
9836 | DECODE_PRINTF("DWORD PTR "); | |
9837 | destoffset = decode_rm00_address(rl); | |
9838 | DECODE_PRINTF(",CL\n"); | |
9839 | destval = fetch_data_long(destoffset); | |
9840 | TRACE_AND_STEP(); | |
9841 | destval = (*opcD1_long_operation[rh]) (destval, amt); | |
9842 | store_data_long(destoffset, destval); | |
9843 | } | |
9844 | else { | |
9845 | u16 destval; | |
9846 | ||
9847 | DECODE_PRINTF("WORD PTR "); | |
9848 | destoffset = decode_rm00_address(rl); | |
9849 | DECODE_PRINTF(",CL\n"); | |
9850 | destval = fetch_data_word(destoffset); | |
9851 | TRACE_AND_STEP(); | |
9852 | destval = (*opcD1_word_operation[rh]) (destval, amt); | |
9853 | store_data_word(destoffset, destval); | |
9854 | } | |
9855 | break; | |
9856 | case 1: | |
9857 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
9858 | u32 destval; | |
9859 | ||
9860 | DECODE_PRINTF("DWORD PTR "); | |
9861 | destoffset = decode_rm01_address(rl); | |
9862 | DECODE_PRINTF(",CL\n"); | |
9863 | destval = fetch_data_long(destoffset); | |
9864 | TRACE_AND_STEP(); | |
9865 | destval = (*opcD1_long_operation[rh]) (destval, amt); | |
9866 | store_data_long(destoffset, destval); | |
9867 | } | |
9868 | else { | |
9869 | u16 destval; | |
9870 | ||
9871 | DECODE_PRINTF("WORD PTR "); | |
9872 | destoffset = decode_rm01_address(rl); | |
9873 | DECODE_PRINTF(",CL\n"); | |
9874 | destval = fetch_data_word(destoffset); | |
9875 | TRACE_AND_STEP(); | |
9876 | destval = (*opcD1_word_operation[rh]) (destval, amt); | |
9877 | store_data_word(destoffset, destval); | |
9878 | } | |
9879 | break; | |
9880 | case 2: | |
9881 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
9882 | u32 destval; | |
9883 | ||
9884 | DECODE_PRINTF("DWORD PTR "); | |
9885 | destoffset = decode_rm10_address(rl); | |
9886 | DECODE_PRINTF(",CL\n"); | |
9887 | destval = fetch_data_long(destoffset); | |
9888 | TRACE_AND_STEP(); | |
9889 | destval = (*opcD1_long_operation[rh]) (destval, amt); | |
9890 | store_data_long(destoffset, destval); | |
9891 | } | |
9892 | else { | |
9893 | u16 destval; | |
9894 | ||
9895 | DECODE_PRINTF("WORD PTR "); | |
9896 | destoffset = decode_rm10_address(rl); | |
9897 | DECODE_PRINTF(",CL\n"); | |
9898 | destval = fetch_data_word(destoffset); | |
9899 | TRACE_AND_STEP(); | |
9900 | destval = (*opcD1_word_operation[rh]) (destval, amt); | |
9901 | store_data_word(destoffset, destval); | |
9902 | } | |
9903 | break; | |
9904 | case 3: /* register to register */ | |
9905 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
9906 | u32 *destreg; | |
9907 | ||
9908 | destreg = DECODE_RM_LONG_REGISTER(rl); | |
9909 | DECODE_PRINTF(",CL\n"); | |
9910 | TRACE_AND_STEP(); | |
9911 | *destreg = (*opcD1_long_operation[rh]) (*destreg, amt); | |
9912 | } | |
9913 | else { | |
9914 | u16 *destreg; | |
9915 | ||
9916 | destreg = DECODE_RM_WORD_REGISTER(rl); | |
9917 | DECODE_PRINTF(",CL\n"); | |
9918 | TRACE_AND_STEP(); | |
9919 | *destreg = (*opcD1_word_operation[rh]) (*destreg, amt); | |
9920 | } | |
9921 | break; | |
9922 | } | |
9923 | DECODE_CLEAR_SEGOVR(); | |
9924 | END_OF_INSTR(); | |
9925 | } | |
9926 | ||
9927 | /**************************************************************************** | |
9928 | REMARKS: | |
9929 | Handles opcode 0xd4 | |
9930 | ****************************************************************************/ | |
9931 | static void | |
9932 | x86emuOp_aam(u8 X86EMU_UNUSED(op1)) | |
9933 | { | |
9934 | u8 a; | |
9935 | ||
9936 | START_OF_INSTR(); | |
9937 | DECODE_PRINTF("AAM\n"); | |
9938 | a = fetch_byte_imm(); /* this is a stupid encoding. */ | |
9939 | if (a != 10) { | |
9940 | /* fix: add base decoding | |
9941 | aam_word(u8 val, int base a) */ | |
9942 | DECODE_PRINTF("ERROR DECODING AAM\n"); | |
9943 | TRACE_REGS(); | |
9944 | HALT_SYS(); | |
9945 | } | |
9946 | TRACE_AND_STEP(); | |
9947 | /* note the type change here --- returning AL and AH in AX. */ | |
9948 | M.x86.R_AX = aam_word(M.x86.R_AL); | |
9949 | DECODE_CLEAR_SEGOVR(); | |
9950 | END_OF_INSTR(); | |
9951 | } | |
9952 | ||
9953 | /**************************************************************************** | |
9954 | REMARKS: | |
9955 | Handles opcode 0xd5 | |
9956 | ****************************************************************************/ | |
9957 | static void | |
9958 | x86emuOp_aad(u8 X86EMU_UNUSED(op1)) | |
9959 | { | |
9960 | u8 a; | |
9961 | ||
9962 | START_OF_INSTR(); | |
9963 | DECODE_PRINTF("AAD\n"); | |
9964 | a = fetch_byte_imm(); | |
9965 | if (a != 10) { | |
9966 | /* fix: add base decoding | |
9967 | aad_word(u16 val, int base a) */ | |
9968 | DECODE_PRINTF("ERROR DECODING AAM\n"); | |
9969 | TRACE_REGS(); | |
9970 | HALT_SYS(); | |
9971 | } | |
9972 | TRACE_AND_STEP(); | |
9973 | M.x86.R_AX = aad_word(M.x86.R_AX); | |
9974 | DECODE_CLEAR_SEGOVR(); | |
9975 | END_OF_INSTR(); | |
9976 | } | |
9977 | ||
9978 | /* opcode 0xd6 ILLEGAL OPCODE */ | |
9979 | ||
9980 | /**************************************************************************** | |
9981 | REMARKS: | |
9982 | Handles opcode 0xd7 | |
9983 | ****************************************************************************/ | |
9984 | static void | |
9985 | x86emuOp_xlat(u8 X86EMU_UNUSED(op1)) | |
9986 | { | |
9987 | u16 addr; | |
9988 | ||
9989 | START_OF_INSTR(); | |
9990 | DECODE_PRINTF("XLAT\n"); | |
9991 | TRACE_AND_STEP(); | |
9992 | addr = (u16) (M.x86.R_BX + (u8) M.x86.R_AL); | |
9993 | M.x86.R_AL = fetch_data_byte(addr); | |
9994 | DECODE_CLEAR_SEGOVR(); | |
9995 | END_OF_INSTR(); | |
9996 | } | |
9997 | ||
9998 | /* instuctions D8 .. DF are in i87_ops.c */ | |
9999 | ||
10000 | /**************************************************************************** | |
10001 | REMARKS: | |
10002 | Handles opcode 0xe0 | |
10003 | ****************************************************************************/ | |
10004 | static void | |
10005 | x86emuOp_loopne(u8 X86EMU_UNUSED(op1)) | |
10006 | { | |
10007 | s16 ip; | |
10008 | ||
10009 | START_OF_INSTR(); | |
10010 | DECODE_PRINTF("LOOPNE\t"); | |
10011 | ip = (s8) fetch_byte_imm(); | |
10012 | ip += (s16) M.x86.R_IP; | |
10013 | DECODE_PRINTF2("%04x\n", ip); | |
10014 | TRACE_AND_STEP(); | |
10015 | M.x86.R_CX -= 1; | |
10016 | if (M.x86.R_CX != 0 && !ACCESS_FLAG(F_ZF)) /* CX != 0 and !ZF */ | |
10017 | M.x86.R_IP = ip; | |
10018 | DECODE_CLEAR_SEGOVR(); | |
10019 | END_OF_INSTR(); | |
10020 | } | |
10021 | ||
10022 | /**************************************************************************** | |
10023 | REMARKS: | |
10024 | Handles opcode 0xe1 | |
10025 | ****************************************************************************/ | |
10026 | static void | |
10027 | x86emuOp_loope(u8 X86EMU_UNUSED(op1)) | |
10028 | { | |
10029 | s16 ip; | |
10030 | ||
10031 | START_OF_INSTR(); | |
10032 | DECODE_PRINTF("LOOPE\t"); | |
10033 | ip = (s8) fetch_byte_imm(); | |
10034 | ip += (s16) M.x86.R_IP; | |
10035 | DECODE_PRINTF2("%04x\n", ip); | |
10036 | TRACE_AND_STEP(); | |
10037 | M.x86.R_CX -= 1; | |
10038 | if (M.x86.R_CX != 0 && ACCESS_FLAG(F_ZF)) /* CX != 0 and ZF */ | |
10039 | M.x86.R_IP = ip; | |
10040 | DECODE_CLEAR_SEGOVR(); | |
10041 | END_OF_INSTR(); | |
10042 | } | |
10043 | ||
10044 | /**************************************************************************** | |
10045 | REMARKS: | |
10046 | Handles opcode 0xe2 | |
10047 | ****************************************************************************/ | |
10048 | static void | |
10049 | x86emuOp_loop(u8 X86EMU_UNUSED(op1)) | |
10050 | { | |
10051 | s16 ip; | |
10052 | ||
10053 | START_OF_INSTR(); | |
10054 | DECODE_PRINTF("LOOP\t"); | |
10055 | ip = (s8) fetch_byte_imm(); | |
10056 | ip += (s16) M.x86.R_IP; | |
10057 | DECODE_PRINTF2("%04x\n", ip); | |
10058 | TRACE_AND_STEP(); | |
10059 | M.x86.R_CX -= 1; | |
10060 | if (M.x86.R_CX != 0) | |
10061 | M.x86.R_IP = ip; | |
10062 | DECODE_CLEAR_SEGOVR(); | |
10063 | END_OF_INSTR(); | |
10064 | } | |
10065 | ||
10066 | /**************************************************************************** | |
10067 | REMARKS: | |
10068 | Handles opcode 0xe3 | |
10069 | ****************************************************************************/ | |
10070 | static void | |
10071 | x86emuOp_jcxz(u8 X86EMU_UNUSED(op1)) | |
10072 | { | |
10073 | u16 target; | |
10074 | s8 offset; | |
10075 | ||
10076 | /* jump to byte offset if overflow flag is set */ | |
10077 | START_OF_INSTR(); | |
10078 | DECODE_PRINTF("JCXZ\t"); | |
10079 | offset = (s8) fetch_byte_imm(); | |
10080 | target = (u16) (M.x86.R_IP + offset); | |
10081 | DECODE_PRINTF2("%x\n", target); | |
10082 | TRACE_AND_STEP(); | |
10083 | if (M.x86.R_CX == 0) | |
10084 | M.x86.R_IP = target; | |
10085 | DECODE_CLEAR_SEGOVR(); | |
10086 | END_OF_INSTR(); | |
10087 | } | |
10088 | ||
10089 | /**************************************************************************** | |
10090 | REMARKS: | |
10091 | Handles opcode 0xe4 | |
10092 | ****************************************************************************/ | |
10093 | static void | |
10094 | x86emuOp_in_byte_AL_IMM(u8 X86EMU_UNUSED(op1)) | |
10095 | { | |
10096 | u8 port; | |
10097 | ||
10098 | START_OF_INSTR(); | |
10099 | DECODE_PRINTF("IN\t"); | |
10100 | port = (u8) fetch_byte_imm(); | |
10101 | DECODE_PRINTF2("%x,AL\n", port); | |
10102 | TRACE_AND_STEP(); | |
10103 | M.x86.R_AL = (*sys_inb) (port); | |
10104 | DECODE_CLEAR_SEGOVR(); | |
10105 | END_OF_INSTR(); | |
10106 | } | |
10107 | ||
10108 | /**************************************************************************** | |
10109 | REMARKS: | |
10110 | Handles opcode 0xe5 | |
10111 | ****************************************************************************/ | |
10112 | static void | |
10113 | x86emuOp_in_word_AX_IMM(u8 X86EMU_UNUSED(op1)) | |
10114 | { | |
10115 | u8 port; | |
10116 | ||
10117 | START_OF_INSTR(); | |
10118 | DECODE_PRINTF("IN\t"); | |
10119 | port = (u8) fetch_byte_imm(); | |
10120 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
10121 | DECODE_PRINTF2("EAX,%x\n", port); | |
10122 | } | |
10123 | else { | |
10124 | DECODE_PRINTF2("AX,%x\n", port); | |
10125 | } | |
10126 | TRACE_AND_STEP(); | |
10127 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
10128 | M.x86.R_EAX = (*sys_inl) (port); | |
10129 | } | |
10130 | else { | |
10131 | M.x86.R_AX = (*sys_inw) (port); | |
10132 | } | |
10133 | DECODE_CLEAR_SEGOVR(); | |
10134 | END_OF_INSTR(); | |
10135 | } | |
10136 | ||
10137 | /**************************************************************************** | |
10138 | REMARKS: | |
10139 | Handles opcode 0xe6 | |
10140 | ****************************************************************************/ | |
10141 | static void | |
10142 | x86emuOp_out_byte_IMM_AL(u8 X86EMU_UNUSED(op1)) | |
10143 | { | |
10144 | u8 port; | |
10145 | ||
10146 | START_OF_INSTR(); | |
10147 | DECODE_PRINTF("OUT\t"); | |
10148 | port = (u8) fetch_byte_imm(); | |
10149 | DECODE_PRINTF2("%x,AL\n", port); | |
10150 | TRACE_AND_STEP(); | |
10151 | (*sys_outb) (port, M.x86.R_AL); | |
10152 | DECODE_CLEAR_SEGOVR(); | |
10153 | END_OF_INSTR(); | |
10154 | } | |
10155 | ||
10156 | /**************************************************************************** | |
10157 | REMARKS: | |
10158 | Handles opcode 0xe7 | |
10159 | ****************************************************************************/ | |
10160 | static void | |
10161 | x86emuOp_out_word_IMM_AX(u8 X86EMU_UNUSED(op1)) | |
10162 | { | |
10163 | u8 port; | |
10164 | ||
10165 | START_OF_INSTR(); | |
10166 | DECODE_PRINTF("OUT\t"); | |
10167 | port = (u8) fetch_byte_imm(); | |
10168 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
10169 | DECODE_PRINTF2("%x,EAX\n", port); | |
10170 | } | |
10171 | else { | |
10172 | DECODE_PRINTF2("%x,AX\n", port); | |
10173 | } | |
10174 | TRACE_AND_STEP(); | |
10175 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
10176 | (*sys_outl) (port, M.x86.R_EAX); | |
10177 | } | |
10178 | else { | |
10179 | (*sys_outw) (port, M.x86.R_AX); | |
10180 | } | |
10181 | DECODE_CLEAR_SEGOVR(); | |
10182 | END_OF_INSTR(); | |
10183 | } | |
10184 | ||
10185 | /**************************************************************************** | |
10186 | REMARKS: | |
10187 | Handles opcode 0xe8 | |
10188 | ****************************************************************************/ | |
10189 | static void | |
10190 | x86emuOp_call_near_IMM(u8 X86EMU_UNUSED(op1)) | |
10191 | { | |
10192 | s16 ip16; | |
10193 | s32 ip32; | |
10194 | ||
10195 | START_OF_INSTR(); | |
10196 | DECODE_PRINTF("CALL\t"); | |
10197 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
10198 | ip32 = (s32) fetch_long_imm(); | |
10199 | ip32 += (s16) M.x86.R_IP; /* CHECK SIGN */ | |
10200 | DECODE_PRINTF2("%04x\n", (u16) ip32); | |
10201 | CALL_TRACE(M.x86.saved_cs, M.x86.saved_ip, M.x86.R_CS, ip32, ""); | |
10202 | } | |
10203 | else { | |
10204 | ip16 = (s16) fetch_word_imm(); | |
10205 | ip16 += (s16) M.x86.R_IP; /* CHECK SIGN */ | |
10206 | DECODE_PRINTF2("%04x\n", (u16) ip16); | |
10207 | CALL_TRACE(M.x86.saved_cs, M.x86.saved_ip, M.x86.R_CS, ip16, ""); | |
10208 | } | |
10209 | TRACE_AND_STEP(); | |
10210 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
10211 | push_long(M.x86.R_EIP); | |
10212 | M.x86.R_EIP = ip32 & 0xffff; | |
10213 | } | |
10214 | else { | |
10215 | push_word(M.x86.R_IP); | |
10216 | M.x86.R_EIP = ip16; | |
10217 | } | |
10218 | DECODE_CLEAR_SEGOVR(); | |
10219 | END_OF_INSTR(); | |
10220 | } | |
10221 | ||
10222 | /**************************************************************************** | |
10223 | REMARKS: | |
10224 | Handles opcode 0xe9 | |
10225 | ****************************************************************************/ | |
10226 | static void | |
10227 | x86emuOp_jump_near_IMM(u8 X86EMU_UNUSED(op1)) | |
10228 | { | |
10229 | u32 ip; | |
10230 | ||
10231 | START_OF_INSTR(); | |
10232 | DECODE_PRINTF("JMP\t"); | |
10233 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
10234 | ip = (u32) fetch_long_imm(); | |
10235 | ip += (u32) M.x86.R_EIP; | |
10236 | DECODE_PRINTF2("%08x\n", (u32) ip); | |
10237 | TRACE_AND_STEP(); | |
10238 | M.x86.R_EIP = (u32) ip; | |
10239 | } | |
10240 | else { | |
10241 | ip = (s16) fetch_word_imm(); | |
10242 | ip += (s16) M.x86.R_IP; | |
10243 | DECODE_PRINTF2("%04x\n", (u16) ip); | |
10244 | TRACE_AND_STEP(); | |
10245 | M.x86.R_IP = (u16) ip; | |
10246 | } | |
10247 | DECODE_CLEAR_SEGOVR(); | |
10248 | END_OF_INSTR(); | |
10249 | } | |
10250 | ||
10251 | /**************************************************************************** | |
10252 | REMARKS: | |
10253 | Handles opcode 0xea | |
10254 | ****************************************************************************/ | |
10255 | static void | |
10256 | x86emuOp_jump_far_IMM(u8 X86EMU_UNUSED(op1)) | |
10257 | { | |
10258 | u16 cs; | |
10259 | u32 ip; | |
10260 | ||
10261 | START_OF_INSTR(); | |
10262 | DECODE_PRINTF("JMP\tFAR "); | |
10263 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
10264 | ip = fetch_long_imm(); | |
10265 | } | |
10266 | else { | |
10267 | ip = fetch_word_imm(); | |
10268 | } | |
10269 | cs = fetch_word_imm(); | |
10270 | DECODE_PRINTF2("%04x:", cs); | |
10271 | DECODE_PRINTF2("%04x\n", ip); | |
10272 | TRACE_AND_STEP(); | |
10273 | M.x86.R_EIP = ip & 0xffff; | |
10274 | M.x86.R_CS = cs; | |
10275 | DECODE_CLEAR_SEGOVR(); | |
10276 | END_OF_INSTR(); | |
10277 | } | |
10278 | ||
10279 | /**************************************************************************** | |
10280 | REMARKS: | |
10281 | Handles opcode 0xeb | |
10282 | ****************************************************************************/ | |
10283 | static void | |
10284 | x86emuOp_jump_byte_IMM(u8 X86EMU_UNUSED(op1)) | |
10285 | { | |
10286 | u16 target; | |
10287 | s8 offset; | |
10288 | ||
10289 | START_OF_INSTR(); | |
10290 | DECODE_PRINTF("JMP\t"); | |
10291 | offset = (s8) fetch_byte_imm(); | |
10292 | target = (u16) (M.x86.R_IP + offset); | |
10293 | DECODE_PRINTF2("%x\n", target); | |
10294 | TRACE_AND_STEP(); | |
10295 | M.x86.R_IP = target; | |
10296 | DECODE_CLEAR_SEGOVR(); | |
10297 | END_OF_INSTR(); | |
10298 | } | |
10299 | ||
10300 | /**************************************************************************** | |
10301 | REMARKS: | |
10302 | Handles opcode 0xec | |
10303 | ****************************************************************************/ | |
10304 | static void | |
10305 | x86emuOp_in_byte_AL_DX(u8 X86EMU_UNUSED(op1)) | |
10306 | { | |
10307 | START_OF_INSTR(); | |
10308 | DECODE_PRINTF("IN\tAL,DX\n"); | |
10309 | TRACE_AND_STEP(); | |
10310 | M.x86.R_AL = (*sys_inb) (M.x86.R_DX); | |
10311 | DECODE_CLEAR_SEGOVR(); | |
10312 | END_OF_INSTR(); | |
10313 | } | |
10314 | ||
10315 | /**************************************************************************** | |
10316 | REMARKS: | |
10317 | Handles opcode 0xed | |
10318 | ****************************************************************************/ | |
10319 | static void | |
10320 | x86emuOp_in_word_AX_DX(u8 X86EMU_UNUSED(op1)) | |
10321 | { | |
10322 | START_OF_INSTR(); | |
10323 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
10324 | DECODE_PRINTF("IN\tEAX,DX\n"); | |
10325 | } | |
10326 | else { | |
10327 | DECODE_PRINTF("IN\tAX,DX\n"); | |
10328 | } | |
10329 | TRACE_AND_STEP(); | |
10330 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
10331 | M.x86.R_EAX = (*sys_inl) (M.x86.R_DX); | |
10332 | } | |
10333 | else { | |
10334 | M.x86.R_AX = (*sys_inw) (M.x86.R_DX); | |
10335 | } | |
10336 | DECODE_CLEAR_SEGOVR(); | |
10337 | END_OF_INSTR(); | |
10338 | } | |
10339 | ||
10340 | /**************************************************************************** | |
10341 | REMARKS: | |
10342 | Handles opcode 0xee | |
10343 | ****************************************************************************/ | |
10344 | static void | |
10345 | x86emuOp_out_byte_DX_AL(u8 X86EMU_UNUSED(op1)) | |
10346 | { | |
10347 | START_OF_INSTR(); | |
10348 | DECODE_PRINTF("OUT\tDX,AL\n"); | |
10349 | TRACE_AND_STEP(); | |
10350 | (*sys_outb) (M.x86.R_DX, M.x86.R_AL); | |
10351 | DECODE_CLEAR_SEGOVR(); | |
10352 | END_OF_INSTR(); | |
10353 | } | |
10354 | ||
10355 | /**************************************************************************** | |
10356 | REMARKS: | |
10357 | Handles opcode 0xef | |
10358 | ****************************************************************************/ | |
10359 | static void | |
10360 | x86emuOp_out_word_DX_AX(u8 X86EMU_UNUSED(op1)) | |
10361 | { | |
10362 | START_OF_INSTR(); | |
10363 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
10364 | DECODE_PRINTF("OUT\tDX,EAX\n"); | |
10365 | } | |
10366 | else { | |
10367 | DECODE_PRINTF("OUT\tDX,AX\n"); | |
10368 | } | |
10369 | TRACE_AND_STEP(); | |
10370 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
10371 | (*sys_outl) (M.x86.R_DX, M.x86.R_EAX); | |
10372 | } | |
10373 | else { | |
10374 | (*sys_outw) (M.x86.R_DX, M.x86.R_AX); | |
10375 | } | |
10376 | DECODE_CLEAR_SEGOVR(); | |
10377 | END_OF_INSTR(); | |
10378 | } | |
10379 | ||
10380 | /**************************************************************************** | |
10381 | REMARKS: | |
10382 | Handles opcode 0xf0 | |
10383 | ****************************************************************************/ | |
10384 | static void | |
10385 | x86emuOp_lock(u8 X86EMU_UNUSED(op1)) | |
10386 | { | |
10387 | START_OF_INSTR(); | |
10388 | DECODE_PRINTF("LOCK:\n"); | |
10389 | TRACE_AND_STEP(); | |
10390 | DECODE_CLEAR_SEGOVR(); | |
10391 | END_OF_INSTR(); | |
10392 | } | |
10393 | ||
10394 | /*opcode 0xf1 ILLEGAL OPERATION */ | |
10395 | ||
10396 | /**************************************************************************** | |
10397 | REMARKS: | |
10398 | Handles opcode 0xf2 | |
10399 | ****************************************************************************/ | |
10400 | static void | |
10401 | x86emuOp_repne(u8 X86EMU_UNUSED(op1)) | |
10402 | { | |
10403 | START_OF_INSTR(); | |
10404 | DECODE_PRINTF("REPNE\n"); | |
10405 | TRACE_AND_STEP(); | |
10406 | M.x86.mode |= SYSMODE_PREFIX_REPNE; | |
10407 | DECODE_CLEAR_SEGOVR(); | |
10408 | END_OF_INSTR(); | |
10409 | } | |
10410 | ||
10411 | /**************************************************************************** | |
10412 | REMARKS: | |
10413 | Handles opcode 0xf3 | |
10414 | ****************************************************************************/ | |
10415 | static void | |
10416 | x86emuOp_repe(u8 X86EMU_UNUSED(op1)) | |
10417 | { | |
10418 | START_OF_INSTR(); | |
10419 | DECODE_PRINTF("REPE\n"); | |
10420 | TRACE_AND_STEP(); | |
10421 | M.x86.mode |= SYSMODE_PREFIX_REPE; | |
10422 | DECODE_CLEAR_SEGOVR(); | |
10423 | END_OF_INSTR(); | |
10424 | } | |
10425 | ||
10426 | /**************************************************************************** | |
10427 | REMARKS: | |
10428 | Handles opcode 0xf4 | |
10429 | ****************************************************************************/ | |
10430 | static void | |
10431 | x86emuOp_halt(u8 X86EMU_UNUSED(op1)) | |
10432 | { | |
10433 | START_OF_INSTR(); | |
10434 | DECODE_PRINTF("HALT\n"); | |
10435 | TRACE_AND_STEP(); | |
10436 | HALT_SYS(); | |
10437 | DECODE_CLEAR_SEGOVR(); | |
10438 | END_OF_INSTR(); | |
10439 | } | |
10440 | ||
10441 | /**************************************************************************** | |
10442 | REMARKS: | |
10443 | Handles opcode 0xf5 | |
10444 | ****************************************************************************/ | |
10445 | static void | |
10446 | x86emuOp_cmc(u8 X86EMU_UNUSED(op1)) | |
10447 | { | |
10448 | /* complement the carry flag. */ | |
10449 | START_OF_INSTR(); | |
10450 | DECODE_PRINTF("CMC\n"); | |
10451 | TRACE_AND_STEP(); | |
10452 | TOGGLE_FLAG(F_CF); | |
10453 | DECODE_CLEAR_SEGOVR(); | |
10454 | END_OF_INSTR(); | |
10455 | } | |
10456 | ||
10457 | /**************************************************************************** | |
10458 | REMARKS: | |
10459 | Handles opcode 0xf6 | |
10460 | ****************************************************************************/ | |
10461 | static void | |
10462 | x86emuOp_opcF6_byte_RM(u8 X86EMU_UNUSED(op1)) | |
10463 | { | |
10464 | int mod, rl, rh; | |
10465 | u8 *destreg; | |
10466 | uint destoffset; | |
10467 | u8 destval, srcval; | |
10468 | ||
10469 | /* long, drawn out code follows. Double switch for a total | |
10470 | of 32 cases. */ | |
10471 | START_OF_INSTR(); | |
10472 | FETCH_DECODE_MODRM(mod, rh, rl); | |
10473 | switch (mod) { | |
10474 | case 0: /* mod=00 */ | |
10475 | switch (rh) { | |
10476 | case 0: /* test byte imm */ | |
10477 | DECODE_PRINTF("TEST\tBYTE PTR "); | |
10478 | destoffset = decode_rm00_address(rl); | |
10479 | DECODE_PRINTF(","); | |
10480 | srcval = fetch_byte_imm(); | |
10481 | DECODE_PRINTF2("%02x\n", srcval); | |
10482 | destval = fetch_data_byte(destoffset); | |
10483 | TRACE_AND_STEP(); | |
10484 | test_byte(destval, srcval); | |
10485 | break; | |
10486 | case 1: | |
10487 | DECODE_PRINTF("ILLEGAL OP MOD=00 RH=01 OP=F6\n"); | |
10488 | HALT_SYS(); | |
10489 | break; | |
10490 | case 2: | |
10491 | DECODE_PRINTF("NOT\tBYTE PTR "); | |
10492 | destoffset = decode_rm00_address(rl); | |
10493 | DECODE_PRINTF("\n"); | |
10494 | destval = fetch_data_byte(destoffset); | |
10495 | TRACE_AND_STEP(); | |
10496 | destval = not_byte(destval); | |
10497 | store_data_byte(destoffset, destval); | |
10498 | break; | |
10499 | case 3: | |
10500 | DECODE_PRINTF("NEG\tBYTE PTR "); | |
10501 | destoffset = decode_rm00_address(rl); | |
10502 | DECODE_PRINTF("\n"); | |
10503 | destval = fetch_data_byte(destoffset); | |
10504 | TRACE_AND_STEP(); | |
10505 | destval = neg_byte(destval); | |
10506 | store_data_byte(destoffset, destval); | |
10507 | break; | |
10508 | case 4: | |
10509 | DECODE_PRINTF("MUL\tBYTE PTR "); | |
10510 | destoffset = decode_rm00_address(rl); | |
10511 | DECODE_PRINTF("\n"); | |
10512 | destval = fetch_data_byte(destoffset); | |
10513 | TRACE_AND_STEP(); | |
10514 | mul_byte(destval); | |
10515 | break; | |
10516 | case 5: | |
10517 | DECODE_PRINTF("IMUL\tBYTE PTR "); | |
10518 | destoffset = decode_rm00_address(rl); | |
10519 | DECODE_PRINTF("\n"); | |
10520 | destval = fetch_data_byte(destoffset); | |
10521 | TRACE_AND_STEP(); | |
10522 | imul_byte(destval); | |
10523 | break; | |
10524 | case 6: | |
10525 | DECODE_PRINTF("DIV\tBYTE PTR "); | |
10526 | destoffset = decode_rm00_address(rl); | |
10527 | DECODE_PRINTF("\n"); | |
10528 | destval = fetch_data_byte(destoffset); | |
10529 | TRACE_AND_STEP(); | |
10530 | div_byte(destval); | |
10531 | break; | |
10532 | case 7: | |
10533 | DECODE_PRINTF("IDIV\tBYTE PTR "); | |
10534 | destoffset = decode_rm00_address(rl); | |
10535 | DECODE_PRINTF("\n"); | |
10536 | destval = fetch_data_byte(destoffset); | |
10537 | TRACE_AND_STEP(); | |
10538 | idiv_byte(destval); | |
10539 | break; | |
10540 | } | |
10541 | break; /* end mod==00 */ | |
10542 | case 1: /* mod=01 */ | |
10543 | switch (rh) { | |
10544 | case 0: /* test byte imm */ | |
10545 | DECODE_PRINTF("TEST\tBYTE PTR "); | |
10546 | destoffset = decode_rm01_address(rl); | |
10547 | DECODE_PRINTF(","); | |
10548 | srcval = fetch_byte_imm(); | |
10549 | DECODE_PRINTF2("%02x\n", srcval); | |
10550 | destval = fetch_data_byte(destoffset); | |
10551 | TRACE_AND_STEP(); | |
10552 | test_byte(destval, srcval); | |
10553 | break; | |
10554 | case 1: | |
10555 | DECODE_PRINTF("ILLEGAL OP MOD=01 RH=01 OP=F6\n"); | |
10556 | HALT_SYS(); | |
10557 | break; | |
10558 | case 2: | |
10559 | DECODE_PRINTF("NOT\tBYTE PTR "); | |
10560 | destoffset = decode_rm01_address(rl); | |
10561 | DECODE_PRINTF("\n"); | |
10562 | destval = fetch_data_byte(destoffset); | |
10563 | TRACE_AND_STEP(); | |
10564 | destval = not_byte(destval); | |
10565 | store_data_byte(destoffset, destval); | |
10566 | break; | |
10567 | case 3: | |
10568 | DECODE_PRINTF("NEG\tBYTE PTR "); | |
10569 | destoffset = decode_rm01_address(rl); | |
10570 | DECODE_PRINTF("\n"); | |
10571 | destval = fetch_data_byte(destoffset); | |
10572 | TRACE_AND_STEP(); | |
10573 | destval = neg_byte(destval); | |
10574 | store_data_byte(destoffset, destval); | |
10575 | break; | |
10576 | case 4: | |
10577 | DECODE_PRINTF("MUL\tBYTE PTR "); | |
10578 | destoffset = decode_rm01_address(rl); | |
10579 | DECODE_PRINTF("\n"); | |
10580 | destval = fetch_data_byte(destoffset); | |
10581 | TRACE_AND_STEP(); | |
10582 | mul_byte(destval); | |
10583 | break; | |
10584 | case 5: | |
10585 | DECODE_PRINTF("IMUL\tBYTE PTR "); | |
10586 | destoffset = decode_rm01_address(rl); | |
10587 | DECODE_PRINTF("\n"); | |
10588 | destval = fetch_data_byte(destoffset); | |
10589 | TRACE_AND_STEP(); | |
10590 | imul_byte(destval); | |
10591 | break; | |
10592 | case 6: | |
10593 | DECODE_PRINTF("DIV\tBYTE PTR "); | |
10594 | destoffset = decode_rm01_address(rl); | |
10595 | DECODE_PRINTF("\n"); | |
10596 | destval = fetch_data_byte(destoffset); | |
10597 | TRACE_AND_STEP(); | |
10598 | div_byte(destval); | |
10599 | break; | |
10600 | case 7: | |
10601 | DECODE_PRINTF("IDIV\tBYTE PTR "); | |
10602 | destoffset = decode_rm01_address(rl); | |
10603 | DECODE_PRINTF("\n"); | |
10604 | destval = fetch_data_byte(destoffset); | |
10605 | TRACE_AND_STEP(); | |
10606 | idiv_byte(destval); | |
10607 | break; | |
10608 | } | |
10609 | break; /* end mod==01 */ | |
10610 | case 2: /* mod=10 */ | |
10611 | switch (rh) { | |
10612 | case 0: /* test byte imm */ | |
10613 | DECODE_PRINTF("TEST\tBYTE PTR "); | |
10614 | destoffset = decode_rm10_address(rl); | |
10615 | DECODE_PRINTF(","); | |
10616 | srcval = fetch_byte_imm(); | |
10617 | DECODE_PRINTF2("%02x\n", srcval); | |
10618 | destval = fetch_data_byte(destoffset); | |
10619 | TRACE_AND_STEP(); | |
10620 | test_byte(destval, srcval); | |
10621 | break; | |
10622 | case 1: | |
10623 | DECODE_PRINTF("ILLEGAL OP MOD=10 RH=01 OP=F6\n"); | |
10624 | HALT_SYS(); | |
10625 | break; | |
10626 | case 2: | |
10627 | DECODE_PRINTF("NOT\tBYTE PTR "); | |
10628 | destoffset = decode_rm10_address(rl); | |
10629 | DECODE_PRINTF("\n"); | |
10630 | destval = fetch_data_byte(destoffset); | |
10631 | TRACE_AND_STEP(); | |
10632 | destval = not_byte(destval); | |
10633 | store_data_byte(destoffset, destval); | |
10634 | break; | |
10635 | case 3: | |
10636 | DECODE_PRINTF("NEG\tBYTE PTR "); | |
10637 | destoffset = decode_rm10_address(rl); | |
10638 | DECODE_PRINTF("\n"); | |
10639 | destval = fetch_data_byte(destoffset); | |
10640 | TRACE_AND_STEP(); | |
10641 | destval = neg_byte(destval); | |
10642 | store_data_byte(destoffset, destval); | |
10643 | break; | |
10644 | case 4: | |
10645 | DECODE_PRINTF("MUL\tBYTE PTR "); | |
10646 | destoffset = decode_rm10_address(rl); | |
10647 | DECODE_PRINTF("\n"); | |
10648 | destval = fetch_data_byte(destoffset); | |
10649 | TRACE_AND_STEP(); | |
10650 | mul_byte(destval); | |
10651 | break; | |
10652 | case 5: | |
10653 | DECODE_PRINTF("IMUL\tBYTE PTR "); | |
10654 | destoffset = decode_rm10_address(rl); | |
10655 | DECODE_PRINTF("\n"); | |
10656 | destval = fetch_data_byte(destoffset); | |
10657 | TRACE_AND_STEP(); | |
10658 | imul_byte(destval); | |
10659 | break; | |
10660 | case 6: | |
10661 | DECODE_PRINTF("DIV\tBYTE PTR "); | |
10662 | destoffset = decode_rm10_address(rl); | |
10663 | DECODE_PRINTF("\n"); | |
10664 | destval = fetch_data_byte(destoffset); | |
10665 | TRACE_AND_STEP(); | |
10666 | div_byte(destval); | |
10667 | break; | |
10668 | case 7: | |
10669 | DECODE_PRINTF("IDIV\tBYTE PTR "); | |
10670 | destoffset = decode_rm10_address(rl); | |
10671 | DECODE_PRINTF("\n"); | |
10672 | destval = fetch_data_byte(destoffset); | |
10673 | TRACE_AND_STEP(); | |
10674 | idiv_byte(destval); | |
10675 | break; | |
10676 | } | |
10677 | break; /* end mod==10 */ | |
10678 | case 3: /* mod=11 */ | |
10679 | switch (rh) { | |
10680 | case 0: /* test byte imm */ | |
10681 | DECODE_PRINTF("TEST\t"); | |
10682 | destreg = DECODE_RM_BYTE_REGISTER(rl); | |
10683 | DECODE_PRINTF(","); | |
10684 | srcval = fetch_byte_imm(); | |
10685 | DECODE_PRINTF2("%02x\n", srcval); | |
10686 | TRACE_AND_STEP(); | |
10687 | test_byte(*destreg, srcval); | |
10688 | break; | |
10689 | case 1: | |
10690 | DECODE_PRINTF("ILLEGAL OP MOD=00 RH=01 OP=F6\n"); | |
10691 | HALT_SYS(); | |
10692 | break; | |
10693 | case 2: | |
10694 | DECODE_PRINTF("NOT\t"); | |
10695 | destreg = DECODE_RM_BYTE_REGISTER(rl); | |
10696 | DECODE_PRINTF("\n"); | |
10697 | TRACE_AND_STEP(); | |
10698 | *destreg = not_byte(*destreg); | |
10699 | break; | |
10700 | case 3: | |
10701 | DECODE_PRINTF("NEG\t"); | |
10702 | destreg = DECODE_RM_BYTE_REGISTER(rl); | |
10703 | DECODE_PRINTF("\n"); | |
10704 | TRACE_AND_STEP(); | |
10705 | *destreg = neg_byte(*destreg); | |
10706 | break; | |
10707 | case 4: | |
10708 | DECODE_PRINTF("MUL\t"); | |
10709 | destreg = DECODE_RM_BYTE_REGISTER(rl); | |
10710 | DECODE_PRINTF("\n"); | |
10711 | TRACE_AND_STEP(); | |
10712 | mul_byte(*destreg); /*!!! */ | |
10713 | break; | |
10714 | case 5: | |
10715 | DECODE_PRINTF("IMUL\t"); | |
10716 | destreg = DECODE_RM_BYTE_REGISTER(rl); | |
10717 | DECODE_PRINTF("\n"); | |
10718 | TRACE_AND_STEP(); | |
10719 | imul_byte(*destreg); | |
10720 | break; | |
10721 | case 6: | |
10722 | DECODE_PRINTF("DIV\t"); | |
10723 | destreg = DECODE_RM_BYTE_REGISTER(rl); | |
10724 | DECODE_PRINTF("\n"); | |
10725 | TRACE_AND_STEP(); | |
10726 | div_byte(*destreg); | |
10727 | break; | |
10728 | case 7: | |
10729 | DECODE_PRINTF("IDIV\t"); | |
10730 | destreg = DECODE_RM_BYTE_REGISTER(rl); | |
10731 | DECODE_PRINTF("\n"); | |
10732 | TRACE_AND_STEP(); | |
10733 | idiv_byte(*destreg); | |
10734 | break; | |
10735 | } | |
10736 | break; /* end mod==11 */ | |
10737 | } | |
10738 | DECODE_CLEAR_SEGOVR(); | |
10739 | END_OF_INSTR(); | |
10740 | } | |
10741 | ||
10742 | /**************************************************************************** | |
10743 | REMARKS: | |
10744 | Handles opcode 0xf7 | |
10745 | ****************************************************************************/ | |
10746 | static void | |
10747 | x86emuOp_opcF7_word_RM(u8 X86EMU_UNUSED(op1)) | |
10748 | { | |
10749 | int mod, rl, rh; | |
10750 | uint destoffset; | |
10751 | ||
10752 | /* long, drawn out code follows. Double switch for a total | |
10753 | of 32 cases. */ | |
10754 | START_OF_INSTR(); | |
10755 | FETCH_DECODE_MODRM(mod, rh, rl); | |
10756 | switch (mod) { | |
10757 | case 0: /* mod=00 */ | |
10758 | switch (rh) { | |
10759 | case 0: /* test word imm */ | |
10760 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
10761 | u32 destval, srcval; | |
10762 | ||
10763 | DECODE_PRINTF("TEST\tDWORD PTR "); | |
10764 | destoffset = decode_rm00_address(rl); | |
10765 | DECODE_PRINTF(","); | |
10766 | srcval = fetch_long_imm(); | |
10767 | DECODE_PRINTF2("%x\n", srcval); | |
10768 | destval = fetch_data_long(destoffset); | |
10769 | TRACE_AND_STEP(); | |
10770 | test_long(destval, srcval); | |
10771 | } | |
10772 | else { | |
10773 | u16 destval, srcval; | |
10774 | ||
10775 | DECODE_PRINTF("TEST\tWORD PTR "); | |
10776 | destoffset = decode_rm00_address(rl); | |
10777 | DECODE_PRINTF(","); | |
10778 | srcval = fetch_word_imm(); | |
10779 | DECODE_PRINTF2("%x\n", srcval); | |
10780 | destval = fetch_data_word(destoffset); | |
10781 | TRACE_AND_STEP(); | |
10782 | test_word(destval, srcval); | |
10783 | } | |
10784 | break; | |
10785 | case 1: | |
10786 | DECODE_PRINTF("ILLEGAL OP MOD=00 RH=01 OP=F7\n"); | |
10787 | HALT_SYS(); | |
10788 | break; | |
10789 | case 2: | |
10790 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
10791 | u32 destval; | |
10792 | ||
10793 | DECODE_PRINTF("NOT\tDWORD PTR "); | |
10794 | destoffset = decode_rm00_address(rl); | |
10795 | DECODE_PRINTF("\n"); | |
10796 | destval = fetch_data_long(destoffset); | |
10797 | TRACE_AND_STEP(); | |
10798 | destval = not_long(destval); | |
10799 | store_data_long(destoffset, destval); | |
10800 | } | |
10801 | else { | |
10802 | u16 destval; | |
10803 | ||
10804 | DECODE_PRINTF("NOT\tWORD PTR "); | |
10805 | destoffset = decode_rm00_address(rl); | |
10806 | DECODE_PRINTF("\n"); | |
10807 | destval = fetch_data_word(destoffset); | |
10808 | TRACE_AND_STEP(); | |
10809 | destval = not_word(destval); | |
10810 | store_data_word(destoffset, destval); | |
10811 | } | |
10812 | break; | |
10813 | case 3: | |
10814 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
10815 | u32 destval; | |
10816 | ||
10817 | DECODE_PRINTF("NEG\tDWORD PTR "); | |
10818 | destoffset = decode_rm00_address(rl); | |
10819 | DECODE_PRINTF("\n"); | |
10820 | destval = fetch_data_long(destoffset); | |
10821 | TRACE_AND_STEP(); | |
10822 | destval = neg_long(destval); | |
10823 | store_data_long(destoffset, destval); | |
10824 | } | |
10825 | else { | |
10826 | u16 destval; | |
10827 | ||
10828 | DECODE_PRINTF("NEG\tWORD PTR "); | |
10829 | destoffset = decode_rm00_address(rl); | |
10830 | DECODE_PRINTF("\n"); | |
10831 | destval = fetch_data_word(destoffset); | |
10832 | TRACE_AND_STEP(); | |
10833 | destval = neg_word(destval); | |
10834 | store_data_word(destoffset, destval); | |
10835 | } | |
10836 | break; | |
10837 | case 4: | |
10838 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
10839 | u32 destval; | |
10840 | ||
10841 | DECODE_PRINTF("MUL\tDWORD PTR "); | |
10842 | destoffset = decode_rm00_address(rl); | |
10843 | DECODE_PRINTF("\n"); | |
10844 | destval = fetch_data_long(destoffset); | |
10845 | TRACE_AND_STEP(); | |
10846 | mul_long(destval); | |
10847 | } | |
10848 | else { | |
10849 | u16 destval; | |
10850 | ||
10851 | DECODE_PRINTF("MUL\tWORD PTR "); | |
10852 | destoffset = decode_rm00_address(rl); | |
10853 | DECODE_PRINTF("\n"); | |
10854 | destval = fetch_data_word(destoffset); | |
10855 | TRACE_AND_STEP(); | |
10856 | mul_word(destval); | |
10857 | } | |
10858 | break; | |
10859 | case 5: | |
10860 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
10861 | u32 destval; | |
10862 | ||
10863 | DECODE_PRINTF("IMUL\tDWORD PTR "); | |
10864 | destoffset = decode_rm00_address(rl); | |
10865 | DECODE_PRINTF("\n"); | |
10866 | destval = fetch_data_long(destoffset); | |
10867 | TRACE_AND_STEP(); | |
10868 | imul_long(destval); | |
10869 | } | |
10870 | else { | |
10871 | u16 destval; | |
10872 | ||
10873 | DECODE_PRINTF("IMUL\tWORD PTR "); | |
10874 | destoffset = decode_rm00_address(rl); | |
10875 | DECODE_PRINTF("\n"); | |
10876 | destval = fetch_data_word(destoffset); | |
10877 | TRACE_AND_STEP(); | |
10878 | imul_word(destval); | |
10879 | } | |
10880 | break; | |
10881 | case 6: | |
10882 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
10883 | u32 destval; | |
10884 | ||
10885 | DECODE_PRINTF("DIV\tDWORD PTR "); | |
10886 | destoffset = decode_rm00_address(rl); | |
10887 | DECODE_PRINTF("\n"); | |
10888 | destval = fetch_data_long(destoffset); | |
10889 | TRACE_AND_STEP(); | |
10890 | div_long(destval); | |
10891 | } | |
10892 | else { | |
10893 | u16 destval; | |
10894 | ||
10895 | DECODE_PRINTF("DIV\tWORD PTR "); | |
10896 | destoffset = decode_rm00_address(rl); | |
10897 | DECODE_PRINTF("\n"); | |
10898 | destval = fetch_data_word(destoffset); | |
10899 | TRACE_AND_STEP(); | |
10900 | div_word(destval); | |
10901 | } | |
10902 | break; | |
10903 | case 7: | |
10904 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
10905 | u32 destval; | |
10906 | ||
10907 | DECODE_PRINTF("IDIV\tDWORD PTR "); | |
10908 | destoffset = decode_rm00_address(rl); | |
10909 | DECODE_PRINTF("\n"); | |
10910 | destval = fetch_data_long(destoffset); | |
10911 | TRACE_AND_STEP(); | |
10912 | idiv_long(destval); | |
10913 | } | |
10914 | else { | |
10915 | u16 destval; | |
10916 | ||
10917 | DECODE_PRINTF("IDIV\tWORD PTR "); | |
10918 | destoffset = decode_rm00_address(rl); | |
10919 | DECODE_PRINTF("\n"); | |
10920 | destval = fetch_data_word(destoffset); | |
10921 | TRACE_AND_STEP(); | |
10922 | idiv_word(destval); | |
10923 | } | |
10924 | break; | |
10925 | } | |
10926 | break; /* end mod==00 */ | |
10927 | case 1: /* mod=01 */ | |
10928 | switch (rh) { | |
10929 | case 0: /* test word imm */ | |
10930 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
10931 | u32 destval, srcval; | |
10932 | ||
10933 | DECODE_PRINTF("TEST\tDWORD PTR "); | |
10934 | destoffset = decode_rm01_address(rl); | |
10935 | DECODE_PRINTF(","); | |
10936 | srcval = fetch_long_imm(); | |
10937 | DECODE_PRINTF2("%x\n", srcval); | |
10938 | destval = fetch_data_long(destoffset); | |
10939 | TRACE_AND_STEP(); | |
10940 | test_long(destval, srcval); | |
10941 | } | |
10942 | else { | |
10943 | u16 destval, srcval; | |
10944 | ||
10945 | DECODE_PRINTF("TEST\tWORD PTR "); | |
10946 | destoffset = decode_rm01_address(rl); | |
10947 | DECODE_PRINTF(","); | |
10948 | srcval = fetch_word_imm(); | |
10949 | DECODE_PRINTF2("%x\n", srcval); | |
10950 | destval = fetch_data_word(destoffset); | |
10951 | TRACE_AND_STEP(); | |
10952 | test_word(destval, srcval); | |
10953 | } | |
10954 | break; | |
10955 | case 1: | |
10956 | DECODE_PRINTF("ILLEGAL OP MOD=01 RH=01 OP=F6\n"); | |
10957 | HALT_SYS(); | |
10958 | break; | |
10959 | case 2: | |
10960 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
10961 | u32 destval; | |
10962 | ||
10963 | DECODE_PRINTF("NOT\tDWORD PTR "); | |
10964 | destoffset = decode_rm01_address(rl); | |
10965 | DECODE_PRINTF("\n"); | |
10966 | destval = fetch_data_long(destoffset); | |
10967 | TRACE_AND_STEP(); | |
10968 | destval = not_long(destval); | |
10969 | store_data_long(destoffset, destval); | |
10970 | } | |
10971 | else { | |
10972 | u16 destval; | |
10973 | ||
10974 | DECODE_PRINTF("NOT\tWORD PTR "); | |
10975 | destoffset = decode_rm01_address(rl); | |
10976 | DECODE_PRINTF("\n"); | |
10977 | destval = fetch_data_word(destoffset); | |
10978 | TRACE_AND_STEP(); | |
10979 | destval = not_word(destval); | |
10980 | store_data_word(destoffset, destval); | |
10981 | } | |
10982 | break; | |
10983 | case 3: | |
10984 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
10985 | u32 destval; | |
10986 | ||
10987 | DECODE_PRINTF("NEG\tDWORD PTR "); | |
10988 | destoffset = decode_rm01_address(rl); | |
10989 | DECODE_PRINTF("\n"); | |
10990 | destval = fetch_data_long(destoffset); | |
10991 | TRACE_AND_STEP(); | |
10992 | destval = neg_long(destval); | |
10993 | store_data_long(destoffset, destval); | |
10994 | } | |
10995 | else { | |
10996 | u16 destval; | |
10997 | ||
10998 | DECODE_PRINTF("NEG\tWORD PTR "); | |
10999 | destoffset = decode_rm01_address(rl); | |
11000 | DECODE_PRINTF("\n"); | |
11001 | destval = fetch_data_word(destoffset); | |
11002 | TRACE_AND_STEP(); | |
11003 | destval = neg_word(destval); | |
11004 | store_data_word(destoffset, destval); | |
11005 | } | |
11006 | break; | |
11007 | case 4: | |
11008 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
11009 | u32 destval; | |
11010 | ||
11011 | DECODE_PRINTF("MUL\tDWORD PTR "); | |
11012 | destoffset = decode_rm01_address(rl); | |
11013 | DECODE_PRINTF("\n"); | |
11014 | destval = fetch_data_long(destoffset); | |
11015 | TRACE_AND_STEP(); | |
11016 | mul_long(destval); | |
11017 | } | |
11018 | else { | |
11019 | u16 destval; | |
11020 | ||
11021 | DECODE_PRINTF("MUL\tWORD PTR "); | |
11022 | destoffset = decode_rm01_address(rl); | |
11023 | DECODE_PRINTF("\n"); | |
11024 | destval = fetch_data_word(destoffset); | |
11025 | TRACE_AND_STEP(); | |
11026 | mul_word(destval); | |
11027 | } | |
11028 | break; | |
11029 | case 5: | |
11030 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
11031 | u32 destval; | |
11032 | ||
11033 | DECODE_PRINTF("IMUL\tDWORD PTR "); | |
11034 | destoffset = decode_rm01_address(rl); | |
11035 | DECODE_PRINTF("\n"); | |
11036 | destval = fetch_data_long(destoffset); | |
11037 | TRACE_AND_STEP(); | |
11038 | imul_long(destval); | |
11039 | } | |
11040 | else { | |
11041 | u16 destval; | |
11042 | ||
11043 | DECODE_PRINTF("IMUL\tWORD PTR "); | |
11044 | destoffset = decode_rm01_address(rl); | |
11045 | DECODE_PRINTF("\n"); | |
11046 | destval = fetch_data_word(destoffset); | |
11047 | TRACE_AND_STEP(); | |
11048 | imul_word(destval); | |
11049 | } | |
11050 | break; | |
11051 | case 6: | |
11052 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
11053 | u32 destval; | |
11054 | ||
11055 | DECODE_PRINTF("DIV\tDWORD PTR "); | |
11056 | destoffset = decode_rm01_address(rl); | |
11057 | DECODE_PRINTF("\n"); | |
11058 | destval = fetch_data_long(destoffset); | |
11059 | TRACE_AND_STEP(); | |
11060 | div_long(destval); | |
11061 | } | |
11062 | else { | |
11063 | u16 destval; | |
11064 | ||
11065 | DECODE_PRINTF("DIV\tWORD PTR "); | |
11066 | destoffset = decode_rm01_address(rl); | |
11067 | DECODE_PRINTF("\n"); | |
11068 | destval = fetch_data_word(destoffset); | |
11069 | TRACE_AND_STEP(); | |
11070 | div_word(destval); | |
11071 | } | |
11072 | break; | |
11073 | case 7: | |
11074 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
11075 | u32 destval; | |
11076 | ||
11077 | DECODE_PRINTF("IDIV\tDWORD PTR "); | |
11078 | destoffset = decode_rm01_address(rl); | |
11079 | DECODE_PRINTF("\n"); | |
11080 | destval = fetch_data_long(destoffset); | |
11081 | TRACE_AND_STEP(); | |
11082 | idiv_long(destval); | |
11083 | } | |
11084 | else { | |
11085 | u16 destval; | |
11086 | ||
11087 | DECODE_PRINTF("IDIV\tWORD PTR "); | |
11088 | destoffset = decode_rm01_address(rl); | |
11089 | DECODE_PRINTF("\n"); | |
11090 | destval = fetch_data_word(destoffset); | |
11091 | TRACE_AND_STEP(); | |
11092 | idiv_word(destval); | |
11093 | } | |
11094 | break; | |
11095 | } | |
11096 | break; /* end mod==01 */ | |
11097 | case 2: /* mod=10 */ | |
11098 | switch (rh) { | |
11099 | case 0: /* test word imm */ | |
11100 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
11101 | u32 destval, srcval; | |
11102 | ||
11103 | DECODE_PRINTF("TEST\tDWORD PTR "); | |
11104 | destoffset = decode_rm10_address(rl); | |
11105 | DECODE_PRINTF(","); | |
11106 | srcval = fetch_long_imm(); | |
11107 | DECODE_PRINTF2("%x\n", srcval); | |
11108 | destval = fetch_data_long(destoffset); | |
11109 | TRACE_AND_STEP(); | |
11110 | test_long(destval, srcval); | |
11111 | } | |
11112 | else { | |
11113 | u16 destval, srcval; | |
11114 | ||
11115 | DECODE_PRINTF("TEST\tWORD PTR "); | |
11116 | destoffset = decode_rm10_address(rl); | |
11117 | DECODE_PRINTF(","); | |
11118 | srcval = fetch_word_imm(); | |
11119 | DECODE_PRINTF2("%x\n", srcval); | |
11120 | destval = fetch_data_word(destoffset); | |
11121 | TRACE_AND_STEP(); | |
11122 | test_word(destval, srcval); | |
11123 | } | |
11124 | break; | |
11125 | case 1: | |
11126 | DECODE_PRINTF("ILLEGAL OP MOD=10 RH=01 OP=F6\n"); | |
11127 | HALT_SYS(); | |
11128 | break; | |
11129 | case 2: | |
11130 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
11131 | u32 destval; | |
11132 | ||
11133 | DECODE_PRINTF("NOT\tDWORD PTR "); | |
11134 | destoffset = decode_rm10_address(rl); | |
11135 | DECODE_PRINTF("\n"); | |
11136 | destval = fetch_data_long(destoffset); | |
11137 | TRACE_AND_STEP(); | |
11138 | destval = not_long(destval); | |
11139 | store_data_long(destoffset, destval); | |
11140 | } | |
11141 | else { | |
11142 | u16 destval; | |
11143 | ||
11144 | DECODE_PRINTF("NOT\tWORD PTR "); | |
11145 | destoffset = decode_rm10_address(rl); | |
11146 | DECODE_PRINTF("\n"); | |
11147 | destval = fetch_data_word(destoffset); | |
11148 | TRACE_AND_STEP(); | |
11149 | destval = not_word(destval); | |
11150 | store_data_word(destoffset, destval); | |
11151 | } | |
11152 | break; | |
11153 | case 3: | |
11154 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
11155 | u32 destval; | |
11156 | ||
11157 | DECODE_PRINTF("NEG\tDWORD PTR "); | |
11158 | destoffset = decode_rm10_address(rl); | |
11159 | DECODE_PRINTF("\n"); | |
11160 | destval = fetch_data_long(destoffset); | |
11161 | TRACE_AND_STEP(); | |
11162 | destval = neg_long(destval); | |
11163 | store_data_long(destoffset, destval); | |
11164 | } | |
11165 | else { | |
11166 | u16 destval; | |
11167 | ||
11168 | DECODE_PRINTF("NEG\tWORD PTR "); | |
11169 | destoffset = decode_rm10_address(rl); | |
11170 | DECODE_PRINTF("\n"); | |
11171 | destval = fetch_data_word(destoffset); | |
11172 | TRACE_AND_STEP(); | |
11173 | destval = neg_word(destval); | |
11174 | store_data_word(destoffset, destval); | |
11175 | } | |
11176 | break; | |
11177 | case 4: | |
11178 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
11179 | u32 destval; | |
11180 | ||
11181 | DECODE_PRINTF("MUL\tDWORD PTR "); | |
11182 | destoffset = decode_rm10_address(rl); | |
11183 | DECODE_PRINTF("\n"); | |
11184 | destval = fetch_data_long(destoffset); | |
11185 | TRACE_AND_STEP(); | |
11186 | mul_long(destval); | |
11187 | } | |
11188 | else { | |
11189 | u16 destval; | |
11190 | ||
11191 | DECODE_PRINTF("MUL\tWORD PTR "); | |
11192 | destoffset = decode_rm10_address(rl); | |
11193 | DECODE_PRINTF("\n"); | |
11194 | destval = fetch_data_word(destoffset); | |
11195 | TRACE_AND_STEP(); | |
11196 | mul_word(destval); | |
11197 | } | |
11198 | break; | |
11199 | case 5: | |
11200 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
11201 | u32 destval; | |
11202 | ||
11203 | DECODE_PRINTF("IMUL\tDWORD PTR "); | |
11204 | destoffset = decode_rm10_address(rl); | |
11205 | DECODE_PRINTF("\n"); | |
11206 | destval = fetch_data_long(destoffset); | |
11207 | TRACE_AND_STEP(); | |
11208 | imul_long(destval); | |
11209 | } | |
11210 | else { | |
11211 | u16 destval; | |
11212 | ||
11213 | DECODE_PRINTF("IMUL\tWORD PTR "); | |
11214 | destoffset = decode_rm10_address(rl); | |
11215 | DECODE_PRINTF("\n"); | |
11216 | destval = fetch_data_word(destoffset); | |
11217 | TRACE_AND_STEP(); | |
11218 | imul_word(destval); | |
11219 | } | |
11220 | break; | |
11221 | case 6: | |
11222 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
11223 | u32 destval; | |
11224 | ||
11225 | DECODE_PRINTF("DIV\tDWORD PTR "); | |
11226 | destoffset = decode_rm10_address(rl); | |
11227 | DECODE_PRINTF("\n"); | |
11228 | destval = fetch_data_long(destoffset); | |
11229 | TRACE_AND_STEP(); | |
11230 | div_long(destval); | |
11231 | } | |
11232 | else { | |
11233 | u16 destval; | |
11234 | ||
11235 | DECODE_PRINTF("DIV\tWORD PTR "); | |
11236 | destoffset = decode_rm10_address(rl); | |
11237 | DECODE_PRINTF("\n"); | |
11238 | destval = fetch_data_word(destoffset); | |
11239 | TRACE_AND_STEP(); | |
11240 | div_word(destval); | |
11241 | } | |
11242 | break; | |
11243 | case 7: | |
11244 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
11245 | u32 destval; | |
11246 | ||
11247 | DECODE_PRINTF("IDIV\tDWORD PTR "); | |
11248 | destoffset = decode_rm10_address(rl); | |
11249 | DECODE_PRINTF("\n"); | |
11250 | destval = fetch_data_long(destoffset); | |
11251 | TRACE_AND_STEP(); | |
11252 | idiv_long(destval); | |
11253 | } | |
11254 | else { | |
11255 | u16 destval; | |
11256 | ||
11257 | DECODE_PRINTF("IDIV\tWORD PTR "); | |
11258 | destoffset = decode_rm10_address(rl); | |
11259 | DECODE_PRINTF("\n"); | |
11260 | destval = fetch_data_word(destoffset); | |
11261 | TRACE_AND_STEP(); | |
11262 | idiv_word(destval); | |
11263 | } | |
11264 | break; | |
11265 | } | |
11266 | break; /* end mod==10 */ | |
11267 | case 3: /* mod=11 */ | |
11268 | switch (rh) { | |
11269 | case 0: /* test word imm */ | |
11270 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
11271 | u32 *destreg; | |
11272 | u32 srcval; | |
11273 | ||
11274 | DECODE_PRINTF("TEST\t"); | |
11275 | destreg = DECODE_RM_LONG_REGISTER(rl); | |
11276 | DECODE_PRINTF(","); | |
11277 | srcval = fetch_long_imm(); | |
11278 | DECODE_PRINTF2("%x\n", srcval); | |
11279 | TRACE_AND_STEP(); | |
11280 | test_long(*destreg, srcval); | |
11281 | } | |
11282 | else { | |
11283 | u16 *destreg; | |
11284 | u16 srcval; | |
11285 | ||
11286 | DECODE_PRINTF("TEST\t"); | |
11287 | destreg = DECODE_RM_WORD_REGISTER(rl); | |
11288 | DECODE_PRINTF(","); | |
11289 | srcval = fetch_word_imm(); | |
11290 | DECODE_PRINTF2("%x\n", srcval); | |
11291 | TRACE_AND_STEP(); | |
11292 | test_word(*destreg, srcval); | |
11293 | } | |
11294 | break; | |
11295 | case 1: | |
11296 | DECODE_PRINTF("ILLEGAL OP MOD=00 RH=01 OP=F6\n"); | |
11297 | HALT_SYS(); | |
11298 | break; | |
11299 | case 2: | |
11300 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
11301 | u32 *destreg; | |
11302 | ||
11303 | DECODE_PRINTF("NOT\t"); | |
11304 | destreg = DECODE_RM_LONG_REGISTER(rl); | |
11305 | DECODE_PRINTF("\n"); | |
11306 | TRACE_AND_STEP(); | |
11307 | *destreg = not_long(*destreg); | |
11308 | } | |
11309 | else { | |
11310 | u16 *destreg; | |
11311 | ||
11312 | DECODE_PRINTF("NOT\t"); | |
11313 | destreg = DECODE_RM_WORD_REGISTER(rl); | |
11314 | DECODE_PRINTF("\n"); | |
11315 | TRACE_AND_STEP(); | |
11316 | *destreg = not_word(*destreg); | |
11317 | } | |
11318 | break; | |
11319 | case 3: | |
11320 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
11321 | u32 *destreg; | |
11322 | ||
11323 | DECODE_PRINTF("NEG\t"); | |
11324 | destreg = DECODE_RM_LONG_REGISTER(rl); | |
11325 | DECODE_PRINTF("\n"); | |
11326 | TRACE_AND_STEP(); | |
11327 | *destreg = neg_long(*destreg); | |
11328 | } | |
11329 | else { | |
11330 | u16 *destreg; | |
11331 | ||
11332 | DECODE_PRINTF("NEG\t"); | |
11333 | destreg = DECODE_RM_WORD_REGISTER(rl); | |
11334 | DECODE_PRINTF("\n"); | |
11335 | TRACE_AND_STEP(); | |
11336 | *destreg = neg_word(*destreg); | |
11337 | } | |
11338 | break; | |
11339 | case 4: | |
11340 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
11341 | u32 *destreg; | |
11342 | ||
11343 | DECODE_PRINTF("MUL\t"); | |
11344 | destreg = DECODE_RM_LONG_REGISTER(rl); | |
11345 | DECODE_PRINTF("\n"); | |
11346 | TRACE_AND_STEP(); | |
11347 | mul_long(*destreg); /*!!! */ | |
11348 | } | |
11349 | else { | |
11350 | u16 *destreg; | |
11351 | ||
11352 | DECODE_PRINTF("MUL\t"); | |
11353 | destreg = DECODE_RM_WORD_REGISTER(rl); | |
11354 | DECODE_PRINTF("\n"); | |
11355 | TRACE_AND_STEP(); | |
11356 | mul_word(*destreg); /*!!! */ | |
11357 | } | |
11358 | break; | |
11359 | case 5: | |
11360 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
11361 | u32 *destreg; | |
11362 | ||
11363 | DECODE_PRINTF("IMUL\t"); | |
11364 | destreg = DECODE_RM_LONG_REGISTER(rl); | |
11365 | DECODE_PRINTF("\n"); | |
11366 | TRACE_AND_STEP(); | |
11367 | imul_long(*destreg); | |
11368 | } | |
11369 | else { | |
11370 | u16 *destreg; | |
11371 | ||
11372 | DECODE_PRINTF("IMUL\t"); | |
11373 | destreg = DECODE_RM_WORD_REGISTER(rl); | |
11374 | DECODE_PRINTF("\n"); | |
11375 | TRACE_AND_STEP(); | |
11376 | imul_word(*destreg); | |
11377 | } | |
11378 | break; | |
11379 | case 6: | |
11380 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
11381 | u32 *destreg; | |
11382 | ||
11383 | DECODE_PRINTF("DIV\t"); | |
11384 | destreg = DECODE_RM_LONG_REGISTER(rl); | |
11385 | DECODE_PRINTF("\n"); | |
11386 | TRACE_AND_STEP(); | |
11387 | div_long(*destreg); | |
11388 | } | |
11389 | else { | |
11390 | u16 *destreg; | |
11391 | ||
11392 | DECODE_PRINTF("DIV\t"); | |
11393 | destreg = DECODE_RM_WORD_REGISTER(rl); | |
11394 | DECODE_PRINTF("\n"); | |
11395 | TRACE_AND_STEP(); | |
11396 | div_word(*destreg); | |
11397 | } | |
11398 | break; | |
11399 | case 7: | |
11400 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
11401 | u32 *destreg; | |
11402 | ||
11403 | DECODE_PRINTF("IDIV\t"); | |
11404 | destreg = DECODE_RM_LONG_REGISTER(rl); | |
11405 | DECODE_PRINTF("\n"); | |
11406 | TRACE_AND_STEP(); | |
11407 | idiv_long(*destreg); | |
11408 | } | |
11409 | else { | |
11410 | u16 *destreg; | |
11411 | ||
11412 | DECODE_PRINTF("IDIV\t"); | |
11413 | destreg = DECODE_RM_WORD_REGISTER(rl); | |
11414 | DECODE_PRINTF("\n"); | |
11415 | TRACE_AND_STEP(); | |
11416 | idiv_word(*destreg); | |
11417 | } | |
11418 | break; | |
11419 | } | |
11420 | break; /* end mod==11 */ | |
11421 | } | |
11422 | DECODE_CLEAR_SEGOVR(); | |
11423 | END_OF_INSTR(); | |
11424 | } | |
11425 | ||
11426 | /**************************************************************************** | |
11427 | REMARKS: | |
11428 | Handles opcode 0xf8 | |
11429 | ****************************************************************************/ | |
11430 | static void | |
11431 | x86emuOp_clc(u8 X86EMU_UNUSED(op1)) | |
11432 | { | |
11433 | /* clear the carry flag. */ | |
11434 | START_OF_INSTR(); | |
11435 | DECODE_PRINTF("CLC\n"); | |
11436 | TRACE_AND_STEP(); | |
11437 | CLEAR_FLAG(F_CF); | |
11438 | DECODE_CLEAR_SEGOVR(); | |
11439 | END_OF_INSTR(); | |
11440 | } | |
11441 | ||
11442 | /**************************************************************************** | |
11443 | REMARKS: | |
11444 | Handles opcode 0xf9 | |
11445 | ****************************************************************************/ | |
11446 | static void | |
11447 | x86emuOp_stc(u8 X86EMU_UNUSED(op1)) | |
11448 | { | |
11449 | /* set the carry flag. */ | |
11450 | START_OF_INSTR(); | |
11451 | DECODE_PRINTF("STC\n"); | |
11452 | TRACE_AND_STEP(); | |
11453 | SET_FLAG(F_CF); | |
11454 | DECODE_CLEAR_SEGOVR(); | |
11455 | END_OF_INSTR(); | |
11456 | } | |
11457 | ||
11458 | /**************************************************************************** | |
11459 | REMARKS: | |
11460 | Handles opcode 0xfa | |
11461 | ****************************************************************************/ | |
11462 | static void | |
11463 | x86emuOp_cli(u8 X86EMU_UNUSED(op1)) | |
11464 | { | |
11465 | /* clear interrupts. */ | |
11466 | START_OF_INSTR(); | |
11467 | DECODE_PRINTF("CLI\n"); | |
11468 | TRACE_AND_STEP(); | |
11469 | CLEAR_FLAG(F_IF); | |
11470 | DECODE_CLEAR_SEGOVR(); | |
11471 | END_OF_INSTR(); | |
11472 | } | |
11473 | ||
11474 | /**************************************************************************** | |
11475 | REMARKS: | |
11476 | Handles opcode 0xfb | |
11477 | ****************************************************************************/ | |
11478 | static void | |
11479 | x86emuOp_sti(u8 X86EMU_UNUSED(op1)) | |
11480 | { | |
11481 | /* enable interrupts. */ | |
11482 | START_OF_INSTR(); | |
11483 | DECODE_PRINTF("STI\n"); | |
11484 | TRACE_AND_STEP(); | |
11485 | SET_FLAG(F_IF); | |
11486 | DECODE_CLEAR_SEGOVR(); | |
11487 | END_OF_INSTR(); | |
11488 | } | |
11489 | ||
11490 | /**************************************************************************** | |
11491 | REMARKS: | |
11492 | Handles opcode 0xfc | |
11493 | ****************************************************************************/ | |
11494 | static void | |
11495 | x86emuOp_cld(u8 X86EMU_UNUSED(op1)) | |
11496 | { | |
11497 | /* clear interrupts. */ | |
11498 | START_OF_INSTR(); | |
11499 | DECODE_PRINTF("CLD\n"); | |
11500 | TRACE_AND_STEP(); | |
11501 | CLEAR_FLAG(F_DF); | |
11502 | DECODE_CLEAR_SEGOVR(); | |
11503 | END_OF_INSTR(); | |
11504 | } | |
11505 | ||
11506 | /**************************************************************************** | |
11507 | REMARKS: | |
11508 | Handles opcode 0xfd | |
11509 | ****************************************************************************/ | |
11510 | static void | |
11511 | x86emuOp_std(u8 X86EMU_UNUSED(op1)) | |
11512 | { | |
11513 | /* clear interrupts. */ | |
11514 | START_OF_INSTR(); | |
11515 | DECODE_PRINTF("STD\n"); | |
11516 | TRACE_AND_STEP(); | |
11517 | SET_FLAG(F_DF); | |
11518 | DECODE_CLEAR_SEGOVR(); | |
11519 | END_OF_INSTR(); | |
11520 | } | |
11521 | ||
11522 | /**************************************************************************** | |
11523 | REMARKS: | |
11524 | Handles opcode 0xfe | |
11525 | ****************************************************************************/ | |
11526 | static void | |
11527 | x86emuOp_opcFE_byte_RM(u8 X86EMU_UNUSED(op1)) | |
11528 | { | |
11529 | int mod, rh, rl; | |
11530 | u8 destval; | |
11531 | uint destoffset; | |
11532 | u8 *destreg; | |
11533 | ||
11534 | /* Yet another special case instruction. */ | |
11535 | START_OF_INSTR(); | |
11536 | FETCH_DECODE_MODRM(mod, rh, rl); | |
11537 | #ifdef DEBUG | |
11538 | if (DEBUG_DECODE()) { | |
11539 | /* XXX DECODE_PRINTF may be changed to something more | |
11540 | general, so that it is important to leave the strings | |
11541 | in the same format, even though the result is that the | |
11542 | above test is done twice. */ | |
11543 | ||
11544 | switch (rh) { | |
11545 | case 0: | |
11546 | DECODE_PRINTF("INC\t"); | |
11547 | break; | |
11548 | case 1: | |
11549 | DECODE_PRINTF("DEC\t"); | |
11550 | break; | |
11551 | case 2: | |
11552 | case 3: | |
11553 | case 4: | |
11554 | case 5: | |
11555 | case 6: | |
11556 | case 7: | |
11557 | DECODE_PRINTF2("ILLEGAL OP MAJOR OP 0xFE MINOR OP %x \n", mod); | |
11558 | HALT_SYS(); | |
11559 | break; | |
11560 | } | |
11561 | } | |
11562 | #endif | |
11563 | switch (mod) { | |
11564 | case 0: | |
11565 | DECODE_PRINTF("BYTE PTR "); | |
11566 | destoffset = decode_rm00_address(rl); | |
11567 | DECODE_PRINTF("\n"); | |
11568 | switch (rh) { | |
11569 | case 0: /* inc word ptr ... */ | |
11570 | destval = fetch_data_byte(destoffset); | |
11571 | TRACE_AND_STEP(); | |
11572 | destval = inc_byte(destval); | |
11573 | store_data_byte(destoffset, destval); | |
11574 | break; | |
11575 | case 1: /* dec word ptr ... */ | |
11576 | destval = fetch_data_byte(destoffset); | |
11577 | TRACE_AND_STEP(); | |
11578 | destval = dec_byte(destval); | |
11579 | store_data_byte(destoffset, destval); | |
11580 | break; | |
11581 | } | |
11582 | break; | |
11583 | case 1: | |
11584 | DECODE_PRINTF("BYTE PTR "); | |
11585 | destoffset = decode_rm01_address(rl); | |
11586 | DECODE_PRINTF("\n"); | |
11587 | switch (rh) { | |
11588 | case 0: | |
11589 | destval = fetch_data_byte(destoffset); | |
11590 | TRACE_AND_STEP(); | |
11591 | destval = inc_byte(destval); | |
11592 | store_data_byte(destoffset, destval); | |
11593 | break; | |
11594 | case 1: | |
11595 | destval = fetch_data_byte(destoffset); | |
11596 | TRACE_AND_STEP(); | |
11597 | destval = dec_byte(destval); | |
11598 | store_data_byte(destoffset, destval); | |
11599 | break; | |
11600 | } | |
11601 | break; | |
11602 | case 2: | |
11603 | DECODE_PRINTF("BYTE PTR "); | |
11604 | destoffset = decode_rm10_address(rl); | |
11605 | DECODE_PRINTF("\n"); | |
11606 | switch (rh) { | |
11607 | case 0: | |
11608 | destval = fetch_data_byte(destoffset); | |
11609 | TRACE_AND_STEP(); | |
11610 | destval = inc_byte(destval); | |
11611 | store_data_byte(destoffset, destval); | |
11612 | break; | |
11613 | case 1: | |
11614 | destval = fetch_data_byte(destoffset); | |
11615 | TRACE_AND_STEP(); | |
11616 | destval = dec_byte(destval); | |
11617 | store_data_byte(destoffset, destval); | |
11618 | break; | |
11619 | } | |
11620 | break; | |
11621 | case 3: | |
11622 | destreg = DECODE_RM_BYTE_REGISTER(rl); | |
11623 | DECODE_PRINTF("\n"); | |
11624 | switch (rh) { | |
11625 | case 0: | |
11626 | TRACE_AND_STEP(); | |
11627 | *destreg = inc_byte(*destreg); | |
11628 | break; | |
11629 | case 1: | |
11630 | TRACE_AND_STEP(); | |
11631 | *destreg = dec_byte(*destreg); | |
11632 | break; | |
11633 | } | |
11634 | break; | |
11635 | } | |
11636 | DECODE_CLEAR_SEGOVR(); | |
11637 | END_OF_INSTR(); | |
11638 | } | |
11639 | ||
11640 | /**************************************************************************** | |
11641 | REMARKS: | |
11642 | Handles opcode 0xff | |
11643 | ****************************************************************************/ | |
11644 | static void | |
11645 | x86emuOp_opcFF_word_RM(u8 X86EMU_UNUSED(op1)) | |
11646 | { | |
11647 | int mod, rh, rl; | |
11648 | uint destoffset = 0; | |
11649 | u16 *destreg; | |
11650 | u16 destval, destval2; | |
11651 | ||
11652 | /* Yet another special case instruction. */ | |
11653 | START_OF_INSTR(); | |
11654 | FETCH_DECODE_MODRM(mod, rh, rl); | |
11655 | #ifdef DEBUG | |
11656 | if (DEBUG_DECODE()) { | |
11657 | /* XXX DECODE_PRINTF may be changed to something more | |
11658 | general, so that it is important to leave the strings | |
11659 | in the same format, even though the result is that the | |
11660 | above test is done twice. */ | |
11661 | ||
11662 | switch (rh) { | |
11663 | case 0: | |
11664 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
11665 | DECODE_PRINTF("INC\tDWORD PTR "); | |
11666 | } | |
11667 | else { | |
11668 | DECODE_PRINTF("INC\tWORD PTR "); | |
11669 | } | |
11670 | break; | |
11671 | case 1: | |
11672 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
11673 | DECODE_PRINTF("DEC\tDWORD PTR "); | |
11674 | } | |
11675 | else { | |
11676 | DECODE_PRINTF("DEC\tWORD PTR "); | |
11677 | } | |
11678 | break; | |
11679 | case 2: | |
11680 | DECODE_PRINTF("CALL\t"); | |
11681 | break; | |
11682 | case 3: | |
11683 | DECODE_PRINTF("CALL\tFAR "); | |
11684 | break; | |
11685 | case 4: | |
11686 | DECODE_PRINTF("JMP\t"); | |
11687 | break; | |
11688 | case 5: | |
11689 | DECODE_PRINTF("JMP\tFAR "); | |
11690 | break; | |
11691 | case 6: | |
11692 | DECODE_PRINTF("PUSH\t"); | |
11693 | break; | |
11694 | case 7: | |
11695 | DECODE_PRINTF("ILLEGAL DECODING OF OPCODE FF\t"); | |
11696 | HALT_SYS(); | |
11697 | break; | |
11698 | } | |
11699 | } | |
11700 | #endif | |
11701 | switch (mod) { | |
11702 | case 0: | |
11703 | destoffset = decode_rm00_address(rl); | |
11704 | DECODE_PRINTF("\n"); | |
11705 | switch (rh) { | |
11706 | case 0: /* inc word ptr ... */ | |
11707 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
11708 | u32 destval; | |
11709 | ||
11710 | destval = fetch_data_long(destoffset); | |
11711 | TRACE_AND_STEP(); | |
11712 | destval = inc_long(destval); | |
11713 | store_data_long(destoffset, destval); | |
11714 | } | |
11715 | else { | |
11716 | u16 destval; | |
11717 | ||
11718 | destval = fetch_data_word(destoffset); | |
11719 | TRACE_AND_STEP(); | |
11720 | destval = inc_word(destval); | |
11721 | store_data_word(destoffset, destval); | |
11722 | } | |
11723 | break; | |
11724 | case 1: /* dec word ptr ... */ | |
11725 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
11726 | u32 destval; | |
11727 | ||
11728 | destval = fetch_data_long(destoffset); | |
11729 | TRACE_AND_STEP(); | |
11730 | destval = dec_long(destval); | |
11731 | store_data_long(destoffset, destval); | |
11732 | } | |
11733 | else { | |
11734 | u16 destval; | |
11735 | ||
11736 | destval = fetch_data_word(destoffset); | |
11737 | TRACE_AND_STEP(); | |
11738 | destval = dec_word(destval); | |
11739 | store_data_word(destoffset, destval); | |
11740 | } | |
11741 | break; | |
11742 | case 2: /* call word ptr ... */ | |
11743 | destval = fetch_data_word(destoffset); | |
11744 | TRACE_AND_STEP(); | |
11745 | push_word(M.x86.R_IP); | |
11746 | M.x86.R_IP = destval; | |
11747 | break; | |
11748 | case 3: /* call far ptr ... */ | |
11749 | destval = fetch_data_word(destoffset); | |
11750 | destval2 = fetch_data_word(destoffset + 2); | |
11751 | TRACE_AND_STEP(); | |
11752 | push_word(M.x86.R_CS); | |
11753 | M.x86.R_CS = destval2; | |
11754 | push_word(M.x86.R_IP); | |
11755 | M.x86.R_IP = destval; | |
11756 | break; | |
11757 | case 4: /* jmp word ptr ... */ | |
11758 | destval = fetch_data_word(destoffset); | |
11759 | TRACE_AND_STEP(); | |
11760 | M.x86.R_IP = destval; | |
11761 | break; | |
11762 | case 5: /* jmp far ptr ... */ | |
11763 | destval = fetch_data_word(destoffset); | |
11764 | destval2 = fetch_data_word(destoffset + 2); | |
11765 | TRACE_AND_STEP(); | |
11766 | M.x86.R_IP = destval; | |
11767 | M.x86.R_CS = destval2; | |
11768 | break; | |
11769 | case 6: /* push word ptr ... */ | |
11770 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
11771 | u32 destval; | |
11772 | ||
11773 | destval = fetch_data_long(destoffset); | |
11774 | TRACE_AND_STEP(); | |
11775 | push_long(destval); | |
11776 | } | |
11777 | else { | |
11778 | u16 destval; | |
11779 | ||
11780 | destval = fetch_data_word(destoffset); | |
11781 | TRACE_AND_STEP(); | |
11782 | push_word(destval); | |
11783 | } | |
11784 | break; | |
11785 | } | |
11786 | break; | |
11787 | case 1: | |
11788 | destoffset = decode_rm01_address(rl); | |
11789 | DECODE_PRINTF("\n"); | |
11790 | switch (rh) { | |
11791 | case 0: | |
11792 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
11793 | u32 destval; | |
11794 | ||
11795 | destval = fetch_data_long(destoffset); | |
11796 | TRACE_AND_STEP(); | |
11797 | destval = inc_long(destval); | |
11798 | store_data_long(destoffset, destval); | |
11799 | } | |
11800 | else { | |
11801 | u16 destval; | |
11802 | ||
11803 | destval = fetch_data_word(destoffset); | |
11804 | TRACE_AND_STEP(); | |
11805 | destval = inc_word(destval); | |
11806 | store_data_word(destoffset, destval); | |
11807 | } | |
11808 | break; | |
11809 | case 1: | |
11810 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
11811 | u32 destval; | |
11812 | ||
11813 | destval = fetch_data_long(destoffset); | |
11814 | TRACE_AND_STEP(); | |
11815 | destval = dec_long(destval); | |
11816 | store_data_long(destoffset, destval); | |
11817 | } | |
11818 | else { | |
11819 | u16 destval; | |
11820 | ||
11821 | destval = fetch_data_word(destoffset); | |
11822 | TRACE_AND_STEP(); | |
11823 | destval = dec_word(destval); | |
11824 | store_data_word(destoffset, destval); | |
11825 | } | |
11826 | break; | |
11827 | case 2: /* call word ptr ... */ | |
11828 | destval = fetch_data_word(destoffset); | |
11829 | TRACE_AND_STEP(); | |
11830 | push_word(M.x86.R_IP); | |
11831 | M.x86.R_IP = destval; | |
11832 | break; | |
11833 | case 3: /* call far ptr ... */ | |
11834 | destval = fetch_data_word(destoffset); | |
11835 | destval2 = fetch_data_word(destoffset + 2); | |
11836 | TRACE_AND_STEP(); | |
11837 | push_word(M.x86.R_CS); | |
11838 | M.x86.R_CS = destval2; | |
11839 | push_word(M.x86.R_IP); | |
11840 | M.x86.R_IP = destval; | |
11841 | break; | |
11842 | case 4: /* jmp word ptr ... */ | |
11843 | destval = fetch_data_word(destoffset); | |
11844 | TRACE_AND_STEP(); | |
11845 | M.x86.R_IP = destval; | |
11846 | break; | |
11847 | case 5: /* jmp far ptr ... */ | |
11848 | destval = fetch_data_word(destoffset); | |
11849 | destval2 = fetch_data_word(destoffset + 2); | |
11850 | TRACE_AND_STEP(); | |
11851 | M.x86.R_IP = destval; | |
11852 | M.x86.R_CS = destval2; | |
11853 | break; | |
11854 | case 6: /* push word ptr ... */ | |
11855 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
11856 | u32 destval; | |
11857 | ||
11858 | destval = fetch_data_long(destoffset); | |
11859 | TRACE_AND_STEP(); | |
11860 | push_long(destval); | |
11861 | } | |
11862 | else { | |
11863 | u16 destval; | |
11864 | ||
11865 | destval = fetch_data_word(destoffset); | |
11866 | TRACE_AND_STEP(); | |
11867 | push_word(destval); | |
11868 | } | |
11869 | break; | |
11870 | } | |
11871 | break; | |
11872 | case 2: | |
11873 | destoffset = decode_rm10_address(rl); | |
11874 | DECODE_PRINTF("\n"); | |
11875 | switch (rh) { | |
11876 | case 0: | |
11877 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
11878 | u32 destval; | |
11879 | ||
11880 | destval = fetch_data_long(destoffset); | |
11881 | TRACE_AND_STEP(); | |
11882 | destval = inc_long(destval); | |
11883 | store_data_long(destoffset, destval); | |
11884 | } | |
11885 | else { | |
11886 | u16 destval; | |
11887 | ||
11888 | destval = fetch_data_word(destoffset); | |
11889 | TRACE_AND_STEP(); | |
11890 | destval = inc_word(destval); | |
11891 | store_data_word(destoffset, destval); | |
11892 | } | |
11893 | break; | |
11894 | case 1: | |
11895 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
11896 | u32 destval; | |
11897 | ||
11898 | destval = fetch_data_long(destoffset); | |
11899 | TRACE_AND_STEP(); | |
11900 | destval = dec_long(destval); | |
11901 | store_data_long(destoffset, destval); | |
11902 | } | |
11903 | else { | |
11904 | u16 destval; | |
11905 | ||
11906 | destval = fetch_data_word(destoffset); | |
11907 | TRACE_AND_STEP(); | |
11908 | destval = dec_word(destval); | |
11909 | store_data_word(destoffset, destval); | |
11910 | } | |
11911 | break; | |
11912 | case 2: /* call word ptr ... */ | |
11913 | destval = fetch_data_word(destoffset); | |
11914 | TRACE_AND_STEP(); | |
11915 | push_word(M.x86.R_IP); | |
11916 | M.x86.R_IP = destval; | |
11917 | break; | |
11918 | case 3: /* call far ptr ... */ | |
11919 | destval = fetch_data_word(destoffset); | |
11920 | destval2 = fetch_data_word(destoffset + 2); | |
11921 | TRACE_AND_STEP(); | |
11922 | push_word(M.x86.R_CS); | |
11923 | M.x86.R_CS = destval2; | |
11924 | push_word(M.x86.R_IP); | |
11925 | M.x86.R_IP = destval; | |
11926 | break; | |
11927 | case 4: /* jmp word ptr ... */ | |
11928 | destval = fetch_data_word(destoffset); | |
11929 | TRACE_AND_STEP(); | |
11930 | M.x86.R_IP = destval; | |
11931 | break; | |
11932 | case 5: /* jmp far ptr ... */ | |
11933 | destval = fetch_data_word(destoffset); | |
11934 | destval2 = fetch_data_word(destoffset + 2); | |
11935 | TRACE_AND_STEP(); | |
11936 | M.x86.R_IP = destval; | |
11937 | M.x86.R_CS = destval2; | |
11938 | break; | |
11939 | case 6: /* push word ptr ... */ | |
11940 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
11941 | u32 destval; | |
11942 | ||
11943 | destval = fetch_data_long(destoffset); | |
11944 | TRACE_AND_STEP(); | |
11945 | push_long(destval); | |
11946 | } | |
11947 | else { | |
11948 | u16 destval; | |
11949 | ||
11950 | destval = fetch_data_word(destoffset); | |
11951 | TRACE_AND_STEP(); | |
11952 | push_word(destval); | |
11953 | } | |
11954 | break; | |
11955 | } | |
11956 | break; | |
11957 | case 3: | |
11958 | switch (rh) { | |
11959 | case 0: | |
11960 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
11961 | u32 *destreg; | |
11962 | ||
11963 | destreg = DECODE_RM_LONG_REGISTER(rl); | |
11964 | DECODE_PRINTF("\n"); | |
11965 | TRACE_AND_STEP(); | |
11966 | *destreg = inc_long(*destreg); | |
11967 | } | |
11968 | else { | |
11969 | u16 *destreg; | |
11970 | ||
11971 | destreg = DECODE_RM_WORD_REGISTER(rl); | |
11972 | DECODE_PRINTF("\n"); | |
11973 | TRACE_AND_STEP(); | |
11974 | *destreg = inc_word(*destreg); | |
11975 | } | |
11976 | break; | |
11977 | case 1: | |
11978 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
11979 | u32 *destreg; | |
11980 | ||
11981 | destreg = DECODE_RM_LONG_REGISTER(rl); | |
11982 | DECODE_PRINTF("\n"); | |
11983 | TRACE_AND_STEP(); | |
11984 | *destreg = dec_long(*destreg); | |
11985 | } | |
11986 | else { | |
11987 | u16 *destreg; | |
11988 | ||
11989 | destreg = DECODE_RM_WORD_REGISTER(rl); | |
11990 | DECODE_PRINTF("\n"); | |
11991 | TRACE_AND_STEP(); | |
11992 | *destreg = dec_word(*destreg); | |
11993 | } | |
11994 | break; | |
11995 | case 2: /* call word ptr ... */ | |
11996 | destreg = DECODE_RM_WORD_REGISTER(rl); | |
11997 | DECODE_PRINTF("\n"); | |
11998 | TRACE_AND_STEP(); | |
11999 | push_word(M.x86.R_IP); | |
12000 | M.x86.R_IP = *destreg; | |
12001 | break; | |
12002 | case 3: /* jmp far ptr ... */ | |
12003 | DECODE_PRINTF("OPERATION UNDEFINED 0XFF \n"); | |
12004 | TRACE_AND_STEP(); | |
12005 | HALT_SYS(); | |
12006 | break; | |
12007 | ||
12008 | case 4: /* jmp ... */ | |
12009 | destreg = DECODE_RM_WORD_REGISTER(rl); | |
12010 | DECODE_PRINTF("\n"); | |
12011 | TRACE_AND_STEP(); | |
12012 | M.x86.R_IP = (u16) (*destreg); | |
12013 | break; | |
12014 | case 5: /* jmp far ptr ... */ | |
12015 | DECODE_PRINTF("OPERATION UNDEFINED 0XFF \n"); | |
12016 | TRACE_AND_STEP(); | |
12017 | HALT_SYS(); | |
12018 | break; | |
12019 | case 6: | |
12020 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
12021 | u32 *destreg; | |
12022 | ||
12023 | destreg = DECODE_RM_LONG_REGISTER(rl); | |
12024 | DECODE_PRINTF("\n"); | |
12025 | TRACE_AND_STEP(); | |
12026 | push_long(*destreg); | |
12027 | } | |
12028 | else { | |
12029 | u16 *destreg; | |
12030 | ||
12031 | destreg = DECODE_RM_WORD_REGISTER(rl); | |
12032 | DECODE_PRINTF("\n"); | |
12033 | TRACE_AND_STEP(); | |
12034 | push_word(*destreg); | |
12035 | } | |
12036 | break; | |
12037 | } | |
12038 | break; | |
12039 | } | |
12040 | DECODE_CLEAR_SEGOVR(); | |
12041 | END_OF_INSTR(); | |
12042 | } | |
12043 | ||
12044 | /*************************************************************************** | |
12045 | * Single byte operation code table: | |
12046 | **************************************************************************/ | |
12047 | void (*x86emu_optab[256]) (u8) = { | |
12048 | /* 0x00 */ x86emuOp_add_byte_RM_R, | |
12049 | /* 0x01 */ x86emuOp_add_word_RM_R, | |
12050 | /* 0x02 */ x86emuOp_add_byte_R_RM, | |
12051 | /* 0x03 */ x86emuOp_add_word_R_RM, | |
12052 | /* 0x04 */ x86emuOp_add_byte_AL_IMM, | |
12053 | /* 0x05 */ x86emuOp_add_word_AX_IMM, | |
12054 | /* 0x06 */ x86emuOp_push_ES, | |
12055 | /* 0x07 */ x86emuOp_pop_ES, | |
12056 | /* 0x08 */ x86emuOp_or_byte_RM_R, | |
12057 | /* 0x09 */ x86emuOp_or_word_RM_R, | |
12058 | /* 0x0a */ x86emuOp_or_byte_R_RM, | |
12059 | /* 0x0b */ x86emuOp_or_word_R_RM, | |
12060 | /* 0x0c */ x86emuOp_or_byte_AL_IMM, | |
12061 | /* 0x0d */ x86emuOp_or_word_AX_IMM, | |
12062 | /* 0x0e */ x86emuOp_push_CS, | |
12063 | /* 0x0f */ x86emuOp_two_byte, | |
12064 | /* 0x10 */ x86emuOp_adc_byte_RM_R, | |
12065 | /* 0x11 */ x86emuOp_adc_word_RM_R, | |
12066 | /* 0x12 */ x86emuOp_adc_byte_R_RM, | |
12067 | /* 0x13 */ x86emuOp_adc_word_R_RM, | |
12068 | /* 0x14 */ x86emuOp_adc_byte_AL_IMM, | |
12069 | /* 0x15 */ x86emuOp_adc_word_AX_IMM, | |
12070 | /* 0x16 */ x86emuOp_push_SS, | |
12071 | /* 0x17 */ x86emuOp_pop_SS, | |
12072 | /* 0x18 */ x86emuOp_sbb_byte_RM_R, | |
12073 | /* 0x19 */ x86emuOp_sbb_word_RM_R, | |
12074 | /* 0x1a */ x86emuOp_sbb_byte_R_RM, | |
12075 | /* 0x1b */ x86emuOp_sbb_word_R_RM, | |
12076 | /* 0x1c */ x86emuOp_sbb_byte_AL_IMM, | |
12077 | /* 0x1d */ x86emuOp_sbb_word_AX_IMM, | |
12078 | /* 0x1e */ x86emuOp_push_DS, | |
12079 | /* 0x1f */ x86emuOp_pop_DS, | |
12080 | /* 0x20 */ x86emuOp_and_byte_RM_R, | |
12081 | /* 0x21 */ x86emuOp_and_word_RM_R, | |
12082 | /* 0x22 */ x86emuOp_and_byte_R_RM, | |
12083 | /* 0x23 */ x86emuOp_and_word_R_RM, | |
12084 | /* 0x24 */ x86emuOp_and_byte_AL_IMM, | |
12085 | /* 0x25 */ x86emuOp_and_word_AX_IMM, | |
12086 | /* 0x26 */ x86emuOp_segovr_ES, | |
12087 | /* 0x27 */ x86emuOp_daa, | |
12088 | /* 0x28 */ x86emuOp_sub_byte_RM_R, | |
12089 | /* 0x29 */ x86emuOp_sub_word_RM_R, | |
12090 | /* 0x2a */ x86emuOp_sub_byte_R_RM, | |
12091 | /* 0x2b */ x86emuOp_sub_word_R_RM, | |
12092 | /* 0x2c */ x86emuOp_sub_byte_AL_IMM, | |
12093 | /* 0x2d */ x86emuOp_sub_word_AX_IMM, | |
12094 | /* 0x2e */ x86emuOp_segovr_CS, | |
12095 | /* 0x2f */ x86emuOp_das, | |
12096 | /* 0x30 */ x86emuOp_xor_byte_RM_R, | |
12097 | /* 0x31 */ x86emuOp_xor_word_RM_R, | |
12098 | /* 0x32 */ x86emuOp_xor_byte_R_RM, | |
12099 | /* 0x33 */ x86emuOp_xor_word_R_RM, | |
12100 | /* 0x34 */ x86emuOp_xor_byte_AL_IMM, | |
12101 | /* 0x35 */ x86emuOp_xor_word_AX_IMM, | |
12102 | /* 0x36 */ x86emuOp_segovr_SS, | |
12103 | /* 0x37 */ x86emuOp_aaa, | |
12104 | /* 0x38 */ x86emuOp_cmp_byte_RM_R, | |
12105 | /* 0x39 */ x86emuOp_cmp_word_RM_R, | |
12106 | /* 0x3a */ x86emuOp_cmp_byte_R_RM, | |
12107 | /* 0x3b */ x86emuOp_cmp_word_R_RM, | |
12108 | /* 0x3c */ x86emuOp_cmp_byte_AL_IMM, | |
12109 | /* 0x3d */ x86emuOp_cmp_word_AX_IMM, | |
12110 | /* 0x3e */ x86emuOp_segovr_DS, | |
12111 | /* 0x3f */ x86emuOp_aas, | |
12112 | /* 0x40 */ x86emuOp_inc_AX, | |
12113 | /* 0x41 */ x86emuOp_inc_CX, | |
12114 | /* 0x42 */ x86emuOp_inc_DX, | |
12115 | /* 0x43 */ x86emuOp_inc_BX, | |
12116 | /* 0x44 */ x86emuOp_inc_SP, | |
12117 | /* 0x45 */ x86emuOp_inc_BP, | |
12118 | /* 0x46 */ x86emuOp_inc_SI, | |
12119 | /* 0x47 */ x86emuOp_inc_DI, | |
12120 | /* 0x48 */ x86emuOp_dec_AX, | |
12121 | /* 0x49 */ x86emuOp_dec_CX, | |
12122 | /* 0x4a */ x86emuOp_dec_DX, | |
12123 | /* 0x4b */ x86emuOp_dec_BX, | |
12124 | /* 0x4c */ x86emuOp_dec_SP, | |
12125 | /* 0x4d */ x86emuOp_dec_BP, | |
12126 | /* 0x4e */ x86emuOp_dec_SI, | |
12127 | /* 0x4f */ x86emuOp_dec_DI, | |
12128 | /* 0x50 */ x86emuOp_push_AX, | |
12129 | /* 0x51 */ x86emuOp_push_CX, | |
12130 | /* 0x52 */ x86emuOp_push_DX, | |
12131 | /* 0x53 */ x86emuOp_push_BX, | |
12132 | /* 0x54 */ x86emuOp_push_SP, | |
12133 | /* 0x55 */ x86emuOp_push_BP, | |
12134 | /* 0x56 */ x86emuOp_push_SI, | |
12135 | /* 0x57 */ x86emuOp_push_DI, | |
12136 | /* 0x58 */ x86emuOp_pop_AX, | |
12137 | /* 0x59 */ x86emuOp_pop_CX, | |
12138 | /* 0x5a */ x86emuOp_pop_DX, | |
12139 | /* 0x5b */ x86emuOp_pop_BX, | |
12140 | /* 0x5c */ x86emuOp_pop_SP, | |
12141 | /* 0x5d */ x86emuOp_pop_BP, | |
12142 | /* 0x5e */ x86emuOp_pop_SI, | |
12143 | /* 0x5f */ x86emuOp_pop_DI, | |
12144 | /* 0x60 */ x86emuOp_push_all, | |
12145 | /* 0x61 */ x86emuOp_pop_all, | |
12146 | /* 0x62 */ x86emuOp_illegal_op, | |
12147 | /* bound */ | |
12148 | /* 0x63 */ x86emuOp_illegal_op, | |
12149 | /* arpl */ | |
12150 | /* 0x64 */ x86emuOp_segovr_FS, | |
12151 | /* 0x65 */ x86emuOp_segovr_GS, | |
12152 | /* 0x66 */ x86emuOp_prefix_data, | |
12153 | /* 0x67 */ x86emuOp_prefix_addr, | |
12154 | /* 0x68 */ x86emuOp_push_word_IMM, | |
12155 | /* 0x69 */ x86emuOp_imul_word_IMM, | |
12156 | /* 0x6a */ x86emuOp_push_byte_IMM, | |
12157 | /* 0x6b */ x86emuOp_imul_byte_IMM, | |
12158 | /* 0x6c */ x86emuOp_ins_byte, | |
12159 | /* 0x6d */ x86emuOp_ins_word, | |
12160 | /* 0x6e */ x86emuOp_outs_byte, | |
12161 | /* 0x6f */ x86emuOp_outs_word, | |
12162 | /* 0x70 */ x86emuOp_jump_near_O, | |
12163 | /* 0x71 */ x86emuOp_jump_near_NO, | |
12164 | /* 0x72 */ x86emuOp_jump_near_B, | |
12165 | /* 0x73 */ x86emuOp_jump_near_NB, | |
12166 | /* 0x74 */ x86emuOp_jump_near_Z, | |
12167 | /* 0x75 */ x86emuOp_jump_near_NZ, | |
12168 | /* 0x76 */ x86emuOp_jump_near_BE, | |
12169 | /* 0x77 */ x86emuOp_jump_near_NBE, | |
12170 | /* 0x78 */ x86emuOp_jump_near_S, | |
12171 | /* 0x79 */ x86emuOp_jump_near_NS, | |
12172 | /* 0x7a */ x86emuOp_jump_near_P, | |
12173 | /* 0x7b */ x86emuOp_jump_near_NP, | |
12174 | /* 0x7c */ x86emuOp_jump_near_L, | |
12175 | /* 0x7d */ x86emuOp_jump_near_NL, | |
12176 | /* 0x7e */ x86emuOp_jump_near_LE, | |
12177 | /* 0x7f */ x86emuOp_jump_near_NLE, | |
12178 | /* 0x80 */ x86emuOp_opc80_byte_RM_IMM, | |
12179 | /* 0x81 */ x86emuOp_opc81_word_RM_IMM, | |
12180 | /* 0x82 */ x86emuOp_opc82_byte_RM_IMM, | |
12181 | /* 0x83 */ x86emuOp_opc83_word_RM_IMM, | |
12182 | /* 0x84 */ x86emuOp_test_byte_RM_R, | |
12183 | /* 0x85 */ x86emuOp_test_word_RM_R, | |
12184 | /* 0x86 */ x86emuOp_xchg_byte_RM_R, | |
12185 | /* 0x87 */ x86emuOp_xchg_word_RM_R, | |
12186 | /* 0x88 */ x86emuOp_mov_byte_RM_R, | |
12187 | /* 0x89 */ x86emuOp_mov_word_RM_R, | |
12188 | /* 0x8a */ x86emuOp_mov_byte_R_RM, | |
12189 | /* 0x8b */ x86emuOp_mov_word_R_RM, | |
12190 | /* 0x8c */ x86emuOp_mov_word_RM_SR, | |
12191 | /* 0x8d */ x86emuOp_lea_word_R_M, | |
12192 | /* 0x8e */ x86emuOp_mov_word_SR_RM, | |
12193 | /* 0x8f */ x86emuOp_pop_RM, | |
12194 | /* 0x90 */ x86emuOp_nop, | |
12195 | /* 0x91 */ x86emuOp_xchg_word_AX_CX, | |
12196 | /* 0x92 */ x86emuOp_xchg_word_AX_DX, | |
12197 | /* 0x93 */ x86emuOp_xchg_word_AX_BX, | |
12198 | /* 0x94 */ x86emuOp_xchg_word_AX_SP, | |
12199 | /* 0x95 */ x86emuOp_xchg_word_AX_BP, | |
12200 | /* 0x96 */ x86emuOp_xchg_word_AX_SI, | |
12201 | /* 0x97 */ x86emuOp_xchg_word_AX_DI, | |
12202 | /* 0x98 */ x86emuOp_cbw, | |
12203 | /* 0x99 */ x86emuOp_cwd, | |
12204 | /* 0x9a */ x86emuOp_call_far_IMM, | |
12205 | /* 0x9b */ x86emuOp_wait, | |
12206 | /* 0x9c */ x86emuOp_pushf_word, | |
12207 | /* 0x9d */ x86emuOp_popf_word, | |
12208 | /* 0x9e */ x86emuOp_sahf, | |
12209 | /* 0x9f */ x86emuOp_lahf, | |
12210 | /* 0xa0 */ x86emuOp_mov_AL_M_IMM, | |
12211 | /* 0xa1 */ x86emuOp_mov_AX_M_IMM, | |
12212 | /* 0xa2 */ x86emuOp_mov_M_AL_IMM, | |
12213 | /* 0xa3 */ x86emuOp_mov_M_AX_IMM, | |
12214 | /* 0xa4 */ x86emuOp_movs_byte, | |
12215 | /* 0xa5 */ x86emuOp_movs_word, | |
12216 | /* 0xa6 */ x86emuOp_cmps_byte, | |
12217 | /* 0xa7 */ x86emuOp_cmps_word, | |
12218 | /* 0xa8 */ x86emuOp_test_AL_IMM, | |
12219 | /* 0xa9 */ x86emuOp_test_AX_IMM, | |
12220 | /* 0xaa */ x86emuOp_stos_byte, | |
12221 | /* 0xab */ x86emuOp_stos_word, | |
12222 | /* 0xac */ x86emuOp_lods_byte, | |
12223 | /* 0xad */ x86emuOp_lods_word, | |
12224 | /* 0xac */ x86emuOp_scas_byte, | |
12225 | /* 0xad */ x86emuOp_scas_word, | |
12226 | /* 0xb0 */ x86emuOp_mov_byte_AL_IMM, | |
12227 | /* 0xb1 */ x86emuOp_mov_byte_CL_IMM, | |
12228 | /* 0xb2 */ x86emuOp_mov_byte_DL_IMM, | |
12229 | /* 0xb3 */ x86emuOp_mov_byte_BL_IMM, | |
12230 | /* 0xb4 */ x86emuOp_mov_byte_AH_IMM, | |
12231 | /* 0xb5 */ x86emuOp_mov_byte_CH_IMM, | |
12232 | /* 0xb6 */ x86emuOp_mov_byte_DH_IMM, | |
12233 | /* 0xb7 */ x86emuOp_mov_byte_BH_IMM, | |
12234 | /* 0xb8 */ x86emuOp_mov_word_AX_IMM, | |
12235 | /* 0xb9 */ x86emuOp_mov_word_CX_IMM, | |
12236 | /* 0xba */ x86emuOp_mov_word_DX_IMM, | |
12237 | /* 0xbb */ x86emuOp_mov_word_BX_IMM, | |
12238 | /* 0xbc */ x86emuOp_mov_word_SP_IMM, | |
12239 | /* 0xbd */ x86emuOp_mov_word_BP_IMM, | |
12240 | /* 0xbe */ x86emuOp_mov_word_SI_IMM, | |
12241 | /* 0xbf */ x86emuOp_mov_word_DI_IMM, | |
12242 | /* 0xc0 */ x86emuOp_opcC0_byte_RM_MEM, | |
12243 | /* 0xc1 */ x86emuOp_opcC1_word_RM_MEM, | |
12244 | /* 0xc2 */ x86emuOp_ret_near_IMM, | |
12245 | /* 0xc3 */ x86emuOp_ret_near, | |
12246 | /* 0xc4 */ x86emuOp_les_R_IMM, | |
12247 | /* 0xc5 */ x86emuOp_lds_R_IMM, | |
12248 | /* 0xc6 */ x86emuOp_mov_byte_RM_IMM, | |
12249 | /* 0xc7 */ x86emuOp_mov_word_RM_IMM, | |
12250 | /* 0xc8 */ x86emuOp_enter, | |
12251 | /* 0xc9 */ x86emuOp_leave, | |
12252 | /* 0xca */ x86emuOp_ret_far_IMM, | |
12253 | /* 0xcb */ x86emuOp_ret_far, | |
12254 | /* 0xcc */ x86emuOp_int3, | |
12255 | /* 0xcd */ x86emuOp_int_IMM, | |
12256 | /* 0xce */ x86emuOp_into, | |
12257 | /* 0xcf */ x86emuOp_iret, | |
12258 | /* 0xd0 */ x86emuOp_opcD0_byte_RM_1, | |
12259 | /* 0xd1 */ x86emuOp_opcD1_word_RM_1, | |
12260 | /* 0xd2 */ x86emuOp_opcD2_byte_RM_CL, | |
12261 | /* 0xd3 */ x86emuOp_opcD3_word_RM_CL, | |
12262 | /* 0xd4 */ x86emuOp_aam, | |
12263 | /* 0xd5 */ x86emuOp_aad, | |
12264 | /* 0xd6 */ x86emuOp_illegal_op, | |
12265 | /* Undocumented SETALC instruction */ | |
12266 | /* 0xd7 */ x86emuOp_xlat, | |
12267 | /* 0xd8 */ x86emuOp_esc_coprocess_d8, | |
12268 | /* 0xd9 */ x86emuOp_esc_coprocess_d9, | |
12269 | /* 0xda */ x86emuOp_esc_coprocess_da, | |
12270 | /* 0xdb */ x86emuOp_esc_coprocess_db, | |
12271 | /* 0xdc */ x86emuOp_esc_coprocess_dc, | |
12272 | /* 0xdd */ x86emuOp_esc_coprocess_dd, | |
12273 | /* 0xde */ x86emuOp_esc_coprocess_de, | |
12274 | /* 0xdf */ x86emuOp_esc_coprocess_df, | |
12275 | /* 0xe0 */ x86emuOp_loopne, | |
12276 | /* 0xe1 */ x86emuOp_loope, | |
12277 | /* 0xe2 */ x86emuOp_loop, | |
12278 | /* 0xe3 */ x86emuOp_jcxz, | |
12279 | /* 0xe4 */ x86emuOp_in_byte_AL_IMM, | |
12280 | /* 0xe5 */ x86emuOp_in_word_AX_IMM, | |
12281 | /* 0xe6 */ x86emuOp_out_byte_IMM_AL, | |
12282 | /* 0xe7 */ x86emuOp_out_word_IMM_AX, | |
12283 | /* 0xe8 */ x86emuOp_call_near_IMM, | |
12284 | /* 0xe9 */ x86emuOp_jump_near_IMM, | |
12285 | /* 0xea */ x86emuOp_jump_far_IMM, | |
12286 | /* 0xeb */ x86emuOp_jump_byte_IMM, | |
12287 | /* 0xec */ x86emuOp_in_byte_AL_DX, | |
12288 | /* 0xed */ x86emuOp_in_word_AX_DX, | |
12289 | /* 0xee */ x86emuOp_out_byte_DX_AL, | |
12290 | /* 0xef */ x86emuOp_out_word_DX_AX, | |
12291 | /* 0xf0 */ x86emuOp_lock, | |
12292 | /* 0xf1 */ x86emuOp_illegal_op, | |
12293 | /* 0xf2 */ x86emuOp_repne, | |
12294 | /* 0xf3 */ x86emuOp_repe, | |
12295 | /* 0xf4 */ x86emuOp_halt, | |
12296 | /* 0xf5 */ x86emuOp_cmc, | |
12297 | /* 0xf6 */ x86emuOp_opcF6_byte_RM, | |
12298 | /* 0xf7 */ x86emuOp_opcF7_word_RM, | |
12299 | /* 0xf8 */ x86emuOp_clc, | |
12300 | /* 0xf9 */ x86emuOp_stc, | |
12301 | /* 0xfa */ x86emuOp_cli, | |
12302 | /* 0xfb */ x86emuOp_sti, | |
12303 | /* 0xfc */ x86emuOp_cld, | |
12304 | /* 0xfd */ x86emuOp_std, | |
12305 | /* 0xfe */ x86emuOp_opcFE_byte_RM, | |
12306 | /* 0xff */ x86emuOp_opcFF_word_RM, | |
12307 | }; |