]>
Commit | Line | Data |
---|---|---|
93afd047 MT |
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 | /* $XFree86: xc/extras/x86emu/src/x86emu/ops.c,v 1.8tsi Exp $ */ | |
74 | ||
75 | #include "x86emu/x86emui.h" | |
76 | ||
77 | /*----------------------------- Implementation ----------------------------*/ | |
78 | ||
79 | /**************************************************************************** | |
80 | PARAMETERS: | |
81 | op1 - Instruction op code | |
82 | ||
83 | REMARKS: | |
84 | Handles illegal opcodes. | |
85 | ****************************************************************************/ | |
86 | static void x86emuOp_illegal_op( | |
87 | u8 op1) | |
88 | { | |
89 | START_OF_INSTR(); | |
90 | if (M.x86.R_SP != 0) { | |
91 | DECODE_PRINTF("ILLEGAL X86 OPCODE\n"); | |
92 | TRACE_REGS(); | |
93 | printk("%04x:%04x: %02X ILLEGAL X86 OPCODE!\n", | |
94 | M.x86.R_CS, M.x86.R_IP-1,op1); | |
95 | HALT_SYS(); | |
96 | } | |
97 | else { | |
98 | /* If we get here, it means the stack pointer is back to zero | |
99 | * so we are just returning from an emulator service call | |
100 | * so therte is no need to display an error message. We trap | |
101 | * the emulator with an 0xF1 opcode to finish the service | |
102 | * call. | |
103 | */ | |
104 | X86EMU_halt_sys(); | |
105 | } | |
106 | END_OF_INSTR(); | |
107 | } | |
108 | ||
109 | /**************************************************************************** | |
110 | REMARKS: | |
111 | Handles opcode 0x00 | |
112 | ****************************************************************************/ | |
113 | static void x86emuOp_add_byte_RM_R(u8 X86EMU_UNUSED(op1)) | |
114 | { | |
115 | int mod, rl, rh; | |
116 | uint destoffset; | |
117 | u8 *destreg, *srcreg; | |
118 | u8 destval; | |
119 | ||
120 | START_OF_INSTR(); | |
121 | DECODE_PRINTF("ADD\t"); | |
122 | FETCH_DECODE_MODRM(mod, rh, rl); | |
123 | switch (mod) { | |
124 | case 0: | |
125 | destoffset = decode_rm00_address(rl); | |
126 | DECODE_PRINTF(","); | |
127 | destval = fetch_data_byte(destoffset); | |
128 | srcreg = DECODE_RM_BYTE_REGISTER(rh); | |
129 | DECODE_PRINTF("\n"); | |
130 | TRACE_AND_STEP(); | |
131 | destval = add_byte(destval, *srcreg); | |
132 | store_data_byte(destoffset, destval); | |
133 | break; | |
134 | case 1: | |
135 | destoffset = decode_rm01_address(rl); | |
136 | DECODE_PRINTF(","); | |
137 | destval = fetch_data_byte(destoffset); | |
138 | srcreg = DECODE_RM_BYTE_REGISTER(rh); | |
139 | DECODE_PRINTF("\n"); | |
140 | TRACE_AND_STEP(); | |
141 | destval = add_byte(destval, *srcreg); | |
142 | store_data_byte(destoffset, destval); | |
143 | break; | |
144 | case 2: | |
145 | destoffset = decode_rm10_address(rl); | |
146 | DECODE_PRINTF(","); | |
147 | destval = fetch_data_byte(destoffset); | |
148 | srcreg = DECODE_RM_BYTE_REGISTER(rh); | |
149 | DECODE_PRINTF("\n"); | |
150 | TRACE_AND_STEP(); | |
151 | destval = add_byte(destval, *srcreg); | |
152 | store_data_byte(destoffset, destval); | |
153 | break; | |
154 | case 3: /* register to register */ | |
155 | destreg = DECODE_RM_BYTE_REGISTER(rl); | |
156 | DECODE_PRINTF(","); | |
157 | srcreg = DECODE_RM_BYTE_REGISTER(rh); | |
158 | DECODE_PRINTF("\n"); | |
159 | TRACE_AND_STEP(); | |
160 | *destreg = add_byte(*destreg, *srcreg); | |
161 | break; | |
162 | } | |
163 | DECODE_CLEAR_SEGOVR(); | |
164 | END_OF_INSTR(); | |
165 | } | |
166 | ||
167 | /**************************************************************************** | |
168 | REMARKS: | |
169 | Handles opcode 0x01 | |
170 | ****************************************************************************/ | |
171 | static void 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 | } else { | |
194 | u16 destval; | |
195 | u16 *srcreg; | |
196 | ||
197 | destoffset = decode_rm00_address(rl); | |
198 | DECODE_PRINTF(","); | |
199 | destval = fetch_data_word(destoffset); | |
200 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
201 | DECODE_PRINTF("\n"); | |
202 | TRACE_AND_STEP(); | |
203 | destval = add_word(destval, *srcreg); | |
204 | store_data_word(destoffset, destval); | |
205 | } | |
206 | break; | |
207 | case 1: | |
208 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
209 | u32 destval; | |
210 | u32 *srcreg; | |
211 | ||
212 | destoffset = decode_rm01_address(rl); | |
213 | DECODE_PRINTF(","); | |
214 | destval = fetch_data_long(destoffset); | |
215 | srcreg = DECODE_RM_LONG_REGISTER(rh); | |
216 | DECODE_PRINTF("\n"); | |
217 | TRACE_AND_STEP(); | |
218 | destval = add_long(destval, *srcreg); | |
219 | store_data_long(destoffset, destval); | |
220 | } else { | |
221 | u16 destval; | |
222 | u16 *srcreg; | |
223 | ||
224 | destoffset = decode_rm01_address(rl); | |
225 | DECODE_PRINTF(","); | |
226 | destval = fetch_data_word(destoffset); | |
227 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
228 | DECODE_PRINTF("\n"); | |
229 | TRACE_AND_STEP(); | |
230 | destval = add_word(destval, *srcreg); | |
231 | store_data_word(destoffset, destval); | |
232 | } | |
233 | break; | |
234 | case 2: | |
235 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
236 | u32 destval; | |
237 | u32 *srcreg; | |
238 | ||
239 | destoffset = decode_rm10_address(rl); | |
240 | DECODE_PRINTF(","); | |
241 | destval = fetch_data_long(destoffset); | |
242 | srcreg = DECODE_RM_LONG_REGISTER(rh); | |
243 | DECODE_PRINTF("\n"); | |
244 | TRACE_AND_STEP(); | |
245 | destval = add_long(destval, *srcreg); | |
246 | store_data_long(destoffset, destval); | |
247 | } else { | |
248 | u16 destval; | |
249 | u16 *srcreg; | |
250 | ||
251 | destoffset = decode_rm10_address(rl); | |
252 | DECODE_PRINTF(","); | |
253 | destval = fetch_data_word(destoffset); | |
254 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
255 | DECODE_PRINTF("\n"); | |
256 | TRACE_AND_STEP(); | |
257 | destval = add_word(destval, *srcreg); | |
258 | store_data_word(destoffset, destval); | |
259 | } | |
260 | break; | |
261 | case 3: /* register to register */ | |
262 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
263 | u32 *destreg,*srcreg; | |
264 | ||
265 | destreg = DECODE_RM_LONG_REGISTER(rl); | |
266 | DECODE_PRINTF(","); | |
267 | srcreg = DECODE_RM_LONG_REGISTER(rh); | |
268 | DECODE_PRINTF("\n"); | |
269 | TRACE_AND_STEP(); | |
270 | *destreg = add_long(*destreg, *srcreg); | |
271 | } else { | |
272 | u16 *destreg,*srcreg; | |
273 | ||
274 | destreg = DECODE_RM_WORD_REGISTER(rl); | |
275 | DECODE_PRINTF(","); | |
276 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
277 | DECODE_PRINTF("\n"); | |
278 | TRACE_AND_STEP(); | |
279 | *destreg = add_word(*destreg, *srcreg); | |
280 | } | |
281 | break; | |
282 | } | |
283 | DECODE_CLEAR_SEGOVR(); | |
284 | END_OF_INSTR(); | |
285 | } | |
286 | ||
287 | /**************************************************************************** | |
288 | REMARKS: | |
289 | Handles opcode 0x02 | |
290 | ****************************************************************************/ | |
291 | static void x86emuOp_add_byte_R_RM(u8 X86EMU_UNUSED(op1)) | |
292 | { | |
293 | int mod, rl, rh; | |
294 | u8 *destreg, *srcreg; | |
295 | uint srcoffset; | |
296 | u8 srcval; | |
297 | ||
298 | START_OF_INSTR(); | |
299 | DECODE_PRINTF("ADD\t"); | |
300 | FETCH_DECODE_MODRM(mod, rh, rl); | |
301 | switch (mod) { | |
302 | case 0: | |
303 | destreg = DECODE_RM_BYTE_REGISTER(rh); | |
304 | DECODE_PRINTF(","); | |
305 | srcoffset = decode_rm00_address(rl); | |
306 | srcval = fetch_data_byte(srcoffset); | |
307 | DECODE_PRINTF("\n"); | |
308 | TRACE_AND_STEP(); | |
309 | *destreg = add_byte(*destreg, srcval); | |
310 | break; | |
311 | case 1: | |
312 | destreg = DECODE_RM_BYTE_REGISTER(rh); | |
313 | DECODE_PRINTF(","); | |
314 | srcoffset = decode_rm01_address(rl); | |
315 | srcval = fetch_data_byte(srcoffset); | |
316 | DECODE_PRINTF("\n"); | |
317 | TRACE_AND_STEP(); | |
318 | *destreg = add_byte(*destreg, srcval); | |
319 | break; | |
320 | case 2: | |
321 | destreg = DECODE_RM_BYTE_REGISTER(rh); | |
322 | DECODE_PRINTF(","); | |
323 | srcoffset = decode_rm10_address(rl); | |
324 | srcval = fetch_data_byte(srcoffset); | |
325 | DECODE_PRINTF("\n"); | |
326 | TRACE_AND_STEP(); | |
327 | *destreg = add_byte(*destreg, srcval); | |
328 | break; | |
329 | case 3: /* register to register */ | |
330 | destreg = DECODE_RM_BYTE_REGISTER(rh); | |
331 | DECODE_PRINTF(","); | |
332 | srcreg = DECODE_RM_BYTE_REGISTER(rl); | |
333 | DECODE_PRINTF("\n"); | |
334 | TRACE_AND_STEP(); | |
335 | *destreg = add_byte(*destreg, *srcreg); | |
336 | break; | |
337 | } | |
338 | DECODE_CLEAR_SEGOVR(); | |
339 | END_OF_INSTR(); | |
340 | } | |
341 | ||
342 | /**************************************************************************** | |
343 | REMARKS: | |
344 | Handles opcode 0x03 | |
345 | ****************************************************************************/ | |
346 | static void x86emuOp_add_word_R_RM(u8 X86EMU_UNUSED(op1)) | |
347 | { | |
348 | int mod, rl, rh; | |
349 | uint srcoffset; | |
350 | ||
351 | START_OF_INSTR(); | |
352 | DECODE_PRINTF("ADD\t"); | |
353 | FETCH_DECODE_MODRM(mod, rh, rl); | |
354 | switch (mod) { | |
355 | case 0: | |
356 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
357 | u32 *destreg; | |
358 | u32 srcval; | |
359 | ||
360 | destreg = DECODE_RM_LONG_REGISTER(rh); | |
361 | DECODE_PRINTF(","); | |
362 | srcoffset = decode_rm00_address(rl); | |
363 | srcval = fetch_data_long(srcoffset); | |
364 | DECODE_PRINTF("\n"); | |
365 | TRACE_AND_STEP(); | |
366 | *destreg = add_long(*destreg, srcval); | |
367 | } else { | |
368 | u16 *destreg; | |
369 | u16 srcval; | |
370 | ||
371 | destreg = DECODE_RM_WORD_REGISTER(rh); | |
372 | DECODE_PRINTF(","); | |
373 | srcoffset = decode_rm00_address(rl); | |
374 | srcval = fetch_data_word(srcoffset); | |
375 | DECODE_PRINTF("\n"); | |
376 | TRACE_AND_STEP(); | |
377 | *destreg = add_word(*destreg, srcval); | |
378 | } | |
379 | break; | |
380 | case 1: | |
381 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
382 | u32 *destreg; | |
383 | u32 srcval; | |
384 | ||
385 | destreg = DECODE_RM_LONG_REGISTER(rh); | |
386 | DECODE_PRINTF(","); | |
387 | srcoffset = decode_rm01_address(rl); | |
388 | srcval = fetch_data_long(srcoffset); | |
389 | DECODE_PRINTF("\n"); | |
390 | TRACE_AND_STEP(); | |
391 | *destreg = add_long(*destreg, srcval); | |
392 | } else { | |
393 | u16 *destreg; | |
394 | u16 srcval; | |
395 | ||
396 | destreg = DECODE_RM_WORD_REGISTER(rh); | |
397 | DECODE_PRINTF(","); | |
398 | srcoffset = decode_rm01_address(rl); | |
399 | srcval = fetch_data_word(srcoffset); | |
400 | DECODE_PRINTF("\n"); | |
401 | TRACE_AND_STEP(); | |
402 | *destreg = add_word(*destreg, srcval); | |
403 | } | |
404 | break; | |
405 | case 2: | |
406 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
407 | u32 *destreg; | |
408 | u32 srcval; | |
409 | ||
410 | destreg = DECODE_RM_LONG_REGISTER(rh); | |
411 | DECODE_PRINTF(","); | |
412 | srcoffset = decode_rm10_address(rl); | |
413 | srcval = fetch_data_long(srcoffset); | |
414 | DECODE_PRINTF("\n"); | |
415 | TRACE_AND_STEP(); | |
416 | *destreg = add_long(*destreg, srcval); | |
417 | } else { | |
418 | u16 *destreg; | |
419 | u16 srcval; | |
420 | ||
421 | destreg = DECODE_RM_WORD_REGISTER(rh); | |
422 | DECODE_PRINTF(","); | |
423 | srcoffset = decode_rm10_address(rl); | |
424 | srcval = fetch_data_word(srcoffset); | |
425 | DECODE_PRINTF("\n"); | |
426 | TRACE_AND_STEP(); | |
427 | *destreg = add_word(*destreg, srcval); | |
428 | } | |
429 | break; | |
430 | case 3: /* register to register */ | |
431 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
432 | u32 *destreg,*srcreg; | |
433 | ||
434 | destreg = DECODE_RM_LONG_REGISTER(rh); | |
435 | DECODE_PRINTF(","); | |
436 | srcreg = DECODE_RM_LONG_REGISTER(rl); | |
437 | DECODE_PRINTF("\n"); | |
438 | TRACE_AND_STEP(); | |
439 | *destreg = add_long(*destreg, *srcreg); | |
440 | } else { | |
441 | u16 *destreg,*srcreg; | |
442 | ||
443 | destreg = DECODE_RM_WORD_REGISTER(rh); | |
444 | DECODE_PRINTF(","); | |
445 | srcreg = DECODE_RM_WORD_REGISTER(rl); | |
446 | DECODE_PRINTF("\n"); | |
447 | TRACE_AND_STEP(); | |
448 | *destreg = add_word(*destreg, *srcreg); | |
449 | } | |
450 | break; | |
451 | } | |
452 | DECODE_CLEAR_SEGOVR(); | |
453 | END_OF_INSTR(); | |
454 | } | |
455 | ||
456 | /**************************************************************************** | |
457 | REMARKS: | |
458 | Handles opcode 0x04 | |
459 | ****************************************************************************/ | |
460 | static void x86emuOp_add_byte_AL_IMM(u8 X86EMU_UNUSED(op1)) | |
461 | { | |
462 | u8 srcval; | |
463 | ||
464 | START_OF_INSTR(); | |
465 | DECODE_PRINTF("ADD\tAL,"); | |
466 | srcval = fetch_byte_imm(); | |
467 | DECODE_PRINTF2("%x\n", srcval); | |
468 | TRACE_AND_STEP(); | |
469 | M.x86.R_AL = add_byte(M.x86.R_AL, srcval); | |
470 | DECODE_CLEAR_SEGOVR(); | |
471 | END_OF_INSTR(); | |
472 | } | |
473 | ||
474 | /**************************************************************************** | |
475 | REMARKS: | |
476 | Handles opcode 0x05 | |
477 | ****************************************************************************/ | |
478 | static void x86emuOp_add_word_AX_IMM(u8 X86EMU_UNUSED(op1)) | |
479 | { | |
480 | u32 srcval; | |
481 | ||
482 | START_OF_INSTR(); | |
483 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
484 | DECODE_PRINTF("ADD\tEAX,"); | |
485 | srcval = fetch_long_imm(); | |
486 | } else { | |
487 | DECODE_PRINTF("ADD\tAX,"); | |
488 | srcval = fetch_word_imm(); | |
489 | } | |
490 | DECODE_PRINTF2("%x\n", srcval); | |
491 | TRACE_AND_STEP(); | |
492 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
493 | M.x86.R_EAX = add_long(M.x86.R_EAX, srcval); | |
494 | } else { | |
495 | M.x86.R_AX = add_word(M.x86.R_AX, (u16)srcval); | |
496 | } | |
497 | DECODE_CLEAR_SEGOVR(); | |
498 | END_OF_INSTR(); | |
499 | } | |
500 | ||
501 | /**************************************************************************** | |
502 | REMARKS: | |
503 | Handles opcode 0x06 | |
504 | ****************************************************************************/ | |
505 | static void x86emuOp_push_ES(u8 X86EMU_UNUSED(op1)) | |
506 | { | |
507 | START_OF_INSTR(); | |
508 | DECODE_PRINTF("PUSH\tES\n"); | |
509 | TRACE_AND_STEP(); | |
510 | push_word(M.x86.R_ES); | |
511 | DECODE_CLEAR_SEGOVR(); | |
512 | END_OF_INSTR(); | |
513 | } | |
514 | ||
515 | /**************************************************************************** | |
516 | REMARKS: | |
517 | Handles opcode 0x07 | |
518 | ****************************************************************************/ | |
519 | static void x86emuOp_pop_ES(u8 X86EMU_UNUSED(op1)) | |
520 | { | |
521 | START_OF_INSTR(); | |
522 | DECODE_PRINTF("POP\tES\n"); | |
523 | TRACE_AND_STEP(); | |
524 | M.x86.R_ES = pop_word(); | |
525 | DECODE_CLEAR_SEGOVR(); | |
526 | END_OF_INSTR(); | |
527 | } | |
528 | ||
529 | /**************************************************************************** | |
530 | REMARKS: | |
531 | Handles opcode 0x08 | |
532 | ****************************************************************************/ | |
533 | static void x86emuOp_or_byte_RM_R(u8 X86EMU_UNUSED(op1)) | |
534 | { | |
535 | int mod, rl, rh; | |
536 | u8 *destreg, *srcreg; | |
537 | uint destoffset; | |
538 | u8 destval; | |
539 | ||
540 | START_OF_INSTR(); | |
541 | DECODE_PRINTF("OR\t"); | |
542 | FETCH_DECODE_MODRM(mod, rh, rl); | |
543 | switch (mod) { | |
544 | case 0: | |
545 | destoffset = decode_rm00_address(rl); | |
546 | DECODE_PRINTF(","); | |
547 | destval = fetch_data_byte(destoffset); | |
548 | srcreg = DECODE_RM_BYTE_REGISTER(rh); | |
549 | DECODE_PRINTF("\n"); | |
550 | TRACE_AND_STEP(); | |
551 | destval = or_byte(destval, *srcreg); | |
552 | store_data_byte(destoffset, destval); | |
553 | break; | |
554 | case 1: | |
555 | destoffset = decode_rm01_address(rl); | |
556 | DECODE_PRINTF(","); | |
557 | destval = fetch_data_byte(destoffset); | |
558 | srcreg = DECODE_RM_BYTE_REGISTER(rh); | |
559 | DECODE_PRINTF("\n"); | |
560 | TRACE_AND_STEP(); | |
561 | destval = or_byte(destval, *srcreg); | |
562 | store_data_byte(destoffset, destval); | |
563 | break; | |
564 | case 2: | |
565 | destoffset = decode_rm10_address(rl); | |
566 | DECODE_PRINTF(","); | |
567 | destval = fetch_data_byte(destoffset); | |
568 | srcreg = DECODE_RM_BYTE_REGISTER(rh); | |
569 | DECODE_PRINTF("\n"); | |
570 | TRACE_AND_STEP(); | |
571 | destval = or_byte(destval, *srcreg); | |
572 | store_data_byte(destoffset, destval); | |
573 | break; | |
574 | case 3: /* register to register */ | |
575 | destreg = DECODE_RM_BYTE_REGISTER(rl); | |
576 | DECODE_PRINTF(","); | |
577 | srcreg = DECODE_RM_BYTE_REGISTER(rh); | |
578 | DECODE_PRINTF("\n"); | |
579 | TRACE_AND_STEP(); | |
580 | *destreg = or_byte(*destreg, *srcreg); | |
581 | break; | |
582 | } | |
583 | DECODE_CLEAR_SEGOVR(); | |
584 | END_OF_INSTR(); | |
585 | } | |
586 | ||
587 | /**************************************************************************** | |
588 | REMARKS: | |
589 | Handles opcode 0x09 | |
590 | ****************************************************************************/ | |
591 | static void x86emuOp_or_word_RM_R(u8 X86EMU_UNUSED(op1)) | |
592 | { | |
593 | int mod, rl, rh; | |
594 | uint destoffset; | |
595 | ||
596 | START_OF_INSTR(); | |
597 | DECODE_PRINTF("OR\t"); | |
598 | FETCH_DECODE_MODRM(mod, rh, rl); | |
599 | switch (mod) { | |
600 | case 0: | |
601 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
602 | u32 destval; | |
603 | u32 *srcreg; | |
604 | ||
605 | destoffset = decode_rm00_address(rl); | |
606 | DECODE_PRINTF(","); | |
607 | destval = fetch_data_long(destoffset); | |
608 | srcreg = DECODE_RM_LONG_REGISTER(rh); | |
609 | DECODE_PRINTF("\n"); | |
610 | TRACE_AND_STEP(); | |
611 | destval = or_long(destval, *srcreg); | |
612 | store_data_long(destoffset, destval); | |
613 | } else { | |
614 | u16 destval; | |
615 | u16 *srcreg; | |
616 | ||
617 | destoffset = decode_rm00_address(rl); | |
618 | DECODE_PRINTF(","); | |
619 | destval = fetch_data_word(destoffset); | |
620 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
621 | DECODE_PRINTF("\n"); | |
622 | TRACE_AND_STEP(); | |
623 | destval = or_word(destval, *srcreg); | |
624 | store_data_word(destoffset, destval); | |
625 | } | |
626 | break; | |
627 | case 1: | |
628 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
629 | u32 destval; | |
630 | u32 *srcreg; | |
631 | ||
632 | destoffset = decode_rm01_address(rl); | |
633 | DECODE_PRINTF(","); | |
634 | destval = fetch_data_long(destoffset); | |
635 | srcreg = DECODE_RM_LONG_REGISTER(rh); | |
636 | DECODE_PRINTF("\n"); | |
637 | TRACE_AND_STEP(); | |
638 | destval = or_long(destval, *srcreg); | |
639 | store_data_long(destoffset, destval); | |
640 | } else { | |
641 | u16 destval; | |
642 | u16 *srcreg; | |
643 | ||
644 | destoffset = decode_rm01_address(rl); | |
645 | DECODE_PRINTF(","); | |
646 | destval = fetch_data_word(destoffset); | |
647 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
648 | DECODE_PRINTF("\n"); | |
649 | TRACE_AND_STEP(); | |
650 | destval = or_word(destval, *srcreg); | |
651 | store_data_word(destoffset, destval); | |
652 | } | |
653 | break; | |
654 | case 2: | |
655 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
656 | u32 destval; | |
657 | u32 *srcreg; | |
658 | ||
659 | destoffset = decode_rm10_address(rl); | |
660 | DECODE_PRINTF(","); | |
661 | destval = fetch_data_long(destoffset); | |
662 | srcreg = DECODE_RM_LONG_REGISTER(rh); | |
663 | DECODE_PRINTF("\n"); | |
664 | TRACE_AND_STEP(); | |
665 | destval = or_long(destval, *srcreg); | |
666 | store_data_long(destoffset, destval); | |
667 | } else { | |
668 | u16 destval; | |
669 | u16 *srcreg; | |
670 | ||
671 | destoffset = decode_rm10_address(rl); | |
672 | DECODE_PRINTF(","); | |
673 | destval = fetch_data_word(destoffset); | |
674 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
675 | DECODE_PRINTF("\n"); | |
676 | TRACE_AND_STEP(); | |
677 | destval = or_word(destval, *srcreg); | |
678 | store_data_word(destoffset, destval); | |
679 | } | |
680 | break; | |
681 | case 3: /* register to register */ | |
682 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
683 | u32 *destreg,*srcreg; | |
684 | ||
685 | destreg = DECODE_RM_LONG_REGISTER(rl); | |
686 | DECODE_PRINTF(","); | |
687 | srcreg = DECODE_RM_LONG_REGISTER(rh); | |
688 | DECODE_PRINTF("\n"); | |
689 | TRACE_AND_STEP(); | |
690 | *destreg = or_long(*destreg, *srcreg); | |
691 | } else { | |
692 | u16 *destreg,*srcreg; | |
693 | ||
694 | destreg = DECODE_RM_WORD_REGISTER(rl); | |
695 | DECODE_PRINTF(","); | |
696 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
697 | DECODE_PRINTF("\n"); | |
698 | TRACE_AND_STEP(); | |
699 | *destreg = or_word(*destreg, *srcreg); | |
700 | } | |
701 | break; | |
702 | } | |
703 | DECODE_CLEAR_SEGOVR(); | |
704 | END_OF_INSTR(); | |
705 | } | |
706 | ||
707 | /**************************************************************************** | |
708 | REMARKS: | |
709 | Handles opcode 0x0a | |
710 | ****************************************************************************/ | |
711 | static void x86emuOp_or_byte_R_RM(u8 X86EMU_UNUSED(op1)) | |
712 | { | |
713 | int mod, rl, rh; | |
714 | u8 *destreg, *srcreg; | |
715 | uint srcoffset; | |
716 | u8 srcval; | |
717 | ||
718 | START_OF_INSTR(); | |
719 | DECODE_PRINTF("OR\t"); | |
720 | FETCH_DECODE_MODRM(mod, rh, rl); | |
721 | switch (mod) { | |
722 | case 0: | |
723 | destreg = DECODE_RM_BYTE_REGISTER(rh); | |
724 | DECODE_PRINTF(","); | |
725 | srcoffset = decode_rm00_address(rl); | |
726 | srcval = fetch_data_byte(srcoffset); | |
727 | DECODE_PRINTF("\n"); | |
728 | TRACE_AND_STEP(); | |
729 | *destreg = or_byte(*destreg, srcval); | |
730 | break; | |
731 | case 1: | |
732 | destreg = DECODE_RM_BYTE_REGISTER(rh); | |
733 | DECODE_PRINTF(","); | |
734 | srcoffset = decode_rm01_address(rl); | |
735 | srcval = fetch_data_byte(srcoffset); | |
736 | DECODE_PRINTF("\n"); | |
737 | TRACE_AND_STEP(); | |
738 | *destreg = or_byte(*destreg, srcval); | |
739 | break; | |
740 | case 2: | |
741 | destreg = DECODE_RM_BYTE_REGISTER(rh); | |
742 | DECODE_PRINTF(","); | |
743 | srcoffset = decode_rm10_address(rl); | |
744 | srcval = fetch_data_byte(srcoffset); | |
745 | DECODE_PRINTF("\n"); | |
746 | TRACE_AND_STEP(); | |
747 | *destreg = or_byte(*destreg, srcval); | |
748 | break; | |
749 | case 3: /* register to register */ | |
750 | destreg = DECODE_RM_BYTE_REGISTER(rh); | |
751 | DECODE_PRINTF(","); | |
752 | srcreg = DECODE_RM_BYTE_REGISTER(rl); | |
753 | DECODE_PRINTF("\n"); | |
754 | TRACE_AND_STEP(); | |
755 | *destreg = or_byte(*destreg, *srcreg); | |
756 | break; | |
757 | } | |
758 | DECODE_CLEAR_SEGOVR(); | |
759 | END_OF_INSTR(); | |
760 | } | |
761 | ||
762 | /**************************************************************************** | |
763 | REMARKS: | |
764 | Handles opcode 0x0b | |
765 | ****************************************************************************/ | |
766 | static void x86emuOp_or_word_R_RM(u8 X86EMU_UNUSED(op1)) | |
767 | { | |
768 | int mod, rl, rh; | |
769 | uint srcoffset; | |
770 | ||
771 | START_OF_INSTR(); | |
772 | DECODE_PRINTF("OR\t"); | |
773 | FETCH_DECODE_MODRM(mod, rh, rl); | |
774 | switch (mod) { | |
775 | case 0: | |
776 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
777 | u32 *destreg; | |
778 | u32 srcval; | |
779 | ||
780 | destreg = DECODE_RM_LONG_REGISTER(rh); | |
781 | DECODE_PRINTF(","); | |
782 | srcoffset = decode_rm00_address(rl); | |
783 | srcval = fetch_data_long(srcoffset); | |
784 | DECODE_PRINTF("\n"); | |
785 | TRACE_AND_STEP(); | |
786 | *destreg = or_long(*destreg, srcval); | |
787 | } else { | |
788 | u16 *destreg; | |
789 | u16 srcval; | |
790 | ||
791 | destreg = DECODE_RM_WORD_REGISTER(rh); | |
792 | DECODE_PRINTF(","); | |
793 | srcoffset = decode_rm00_address(rl); | |
794 | srcval = fetch_data_word(srcoffset); | |
795 | DECODE_PRINTF("\n"); | |
796 | TRACE_AND_STEP(); | |
797 | *destreg = or_word(*destreg, srcval); | |
798 | } | |
799 | break; | |
800 | case 1: | |
801 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
802 | u32 *destreg; | |
803 | u32 srcval; | |
804 | ||
805 | destreg = DECODE_RM_LONG_REGISTER(rh); | |
806 | DECODE_PRINTF(","); | |
807 | srcoffset = decode_rm01_address(rl); | |
808 | srcval = fetch_data_long(srcoffset); | |
809 | DECODE_PRINTF("\n"); | |
810 | TRACE_AND_STEP(); | |
811 | *destreg = or_long(*destreg, srcval); | |
812 | } else { | |
813 | u16 *destreg; | |
814 | u16 srcval; | |
815 | ||
816 | destreg = DECODE_RM_WORD_REGISTER(rh); | |
817 | DECODE_PRINTF(","); | |
818 | srcoffset = decode_rm01_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 2: | |
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_rm10_address(rl); | |
833 | srcval = fetch_data_long(srcoffset); | |
834 | DECODE_PRINTF("\n"); | |
835 | TRACE_AND_STEP(); | |
836 | *destreg = or_long(*destreg, srcval); | |
837 | } else { | |
838 | u16 *destreg; | |
839 | u16 srcval; | |
840 | ||
841 | destreg = DECODE_RM_WORD_REGISTER(rh); | |
842 | DECODE_PRINTF(","); | |
843 | srcoffset = decode_rm10_address(rl); | |
844 | srcval = fetch_data_word(srcoffset); | |
845 | DECODE_PRINTF("\n"); | |
846 | TRACE_AND_STEP(); | |
847 | *destreg = or_word(*destreg, srcval); | |
848 | } | |
849 | break; | |
850 | case 3: /* register to register */ | |
851 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
852 | u32 *destreg,*srcreg; | |
853 | ||
854 | destreg = DECODE_RM_LONG_REGISTER(rh); | |
855 | DECODE_PRINTF(","); | |
856 | srcreg = DECODE_RM_LONG_REGISTER(rl); | |
857 | DECODE_PRINTF("\n"); | |
858 | TRACE_AND_STEP(); | |
859 | *destreg = or_long(*destreg, *srcreg); | |
860 | } else { | |
861 | u16 *destreg,*srcreg; | |
862 | ||
863 | destreg = DECODE_RM_WORD_REGISTER(rh); | |
864 | DECODE_PRINTF(","); | |
865 | srcreg = DECODE_RM_WORD_REGISTER(rl); | |
866 | DECODE_PRINTF("\n"); | |
867 | TRACE_AND_STEP(); | |
868 | *destreg = or_word(*destreg, *srcreg); | |
869 | } | |
870 | break; | |
871 | } | |
872 | DECODE_CLEAR_SEGOVR(); | |
873 | END_OF_INSTR(); | |
874 | } | |
875 | ||
876 | /**************************************************************************** | |
877 | REMARKS: | |
878 | Handles opcode 0x0c | |
879 | ****************************************************************************/ | |
880 | static void x86emuOp_or_byte_AL_IMM(u8 X86EMU_UNUSED(op1)) | |
881 | { | |
882 | u8 srcval; | |
883 | ||
884 | START_OF_INSTR(); | |
885 | DECODE_PRINTF("OR\tAL,"); | |
886 | srcval = fetch_byte_imm(); | |
887 | DECODE_PRINTF2("%x\n", srcval); | |
888 | TRACE_AND_STEP(); | |
889 | M.x86.R_AL = or_byte(M.x86.R_AL, srcval); | |
890 | DECODE_CLEAR_SEGOVR(); | |
891 | END_OF_INSTR(); | |
892 | } | |
893 | ||
894 | /**************************************************************************** | |
895 | REMARKS: | |
896 | Handles opcode 0x0d | |
897 | ****************************************************************************/ | |
898 | static void x86emuOp_or_word_AX_IMM(u8 X86EMU_UNUSED(op1)) | |
899 | { | |
900 | u32 srcval; | |
901 | ||
902 | START_OF_INSTR(); | |
903 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
904 | DECODE_PRINTF("OR\tEAX,"); | |
905 | srcval = fetch_long_imm(); | |
906 | } else { | |
907 | DECODE_PRINTF("OR\tAX,"); | |
908 | srcval = fetch_word_imm(); | |
909 | } | |
910 | DECODE_PRINTF2("%x\n", srcval); | |
911 | TRACE_AND_STEP(); | |
912 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
913 | M.x86.R_EAX = or_long(M.x86.R_EAX, srcval); | |
914 | } else { | |
915 | M.x86.R_AX = or_word(M.x86.R_AX, (u16)srcval); | |
916 | } | |
917 | DECODE_CLEAR_SEGOVR(); | |
918 | END_OF_INSTR(); | |
919 | } | |
920 | ||
921 | /**************************************************************************** | |
922 | REMARKS: | |
923 | Handles opcode 0x0e | |
924 | ****************************************************************************/ | |
925 | static void x86emuOp_push_CS(u8 X86EMU_UNUSED(op1)) | |
926 | { | |
927 | START_OF_INSTR(); | |
928 | DECODE_PRINTF("PUSH\tCS\n"); | |
929 | TRACE_AND_STEP(); | |
930 | push_word(M.x86.R_CS); | |
931 | DECODE_CLEAR_SEGOVR(); | |
932 | END_OF_INSTR(); | |
933 | } | |
934 | ||
935 | /**************************************************************************** | |
936 | REMARKS: | |
937 | Handles opcode 0x0f. Escape for two-byte opcode (286 or better) | |
938 | ****************************************************************************/ | |
939 | static void x86emuOp_two_byte(u8 X86EMU_UNUSED(op1)) | |
940 | { | |
941 | u8 op2 = (*sys_rdb)(((u32)M.x86.R_CS << 4) + (M.x86.R_IP++)); | |
942 | INC_DECODED_INST_LEN(1); | |
943 | (*x86emu_optab2[op2])(op2); | |
944 | } | |
945 | ||
946 | /**************************************************************************** | |
947 | REMARKS: | |
948 | Handles opcode 0x10 | |
949 | ****************************************************************************/ | |
950 | static void x86emuOp_adc_byte_RM_R(u8 X86EMU_UNUSED(op1)) | |
951 | { | |
952 | int mod, rl, rh; | |
953 | u8 *destreg, *srcreg; | |
954 | uint destoffset; | |
955 | u8 destval; | |
956 | ||
957 | START_OF_INSTR(); | |
958 | DECODE_PRINTF("ADC\t"); | |
959 | FETCH_DECODE_MODRM(mod, rh, rl); | |
960 | switch (mod) { | |
961 | case 0: | |
962 | destoffset = decode_rm00_address(rl); | |
963 | DECODE_PRINTF(","); | |
964 | destval = fetch_data_byte(destoffset); | |
965 | srcreg = DECODE_RM_BYTE_REGISTER(rh); | |
966 | DECODE_PRINTF("\n"); | |
967 | TRACE_AND_STEP(); | |
968 | destval = adc_byte(destval, *srcreg); | |
969 | store_data_byte(destoffset, destval); | |
970 | break; | |
971 | case 1: | |
972 | destoffset = decode_rm01_address(rl); | |
973 | DECODE_PRINTF(","); | |
974 | destval = fetch_data_byte(destoffset); | |
975 | srcreg = DECODE_RM_BYTE_REGISTER(rh); | |
976 | DECODE_PRINTF("\n"); | |
977 | TRACE_AND_STEP(); | |
978 | destval = adc_byte(destval, *srcreg); | |
979 | store_data_byte(destoffset, destval); | |
980 | break; | |
981 | case 2: | |
982 | destoffset = decode_rm10_address(rl); | |
983 | DECODE_PRINTF(","); | |
984 | destval = fetch_data_byte(destoffset); | |
985 | srcreg = DECODE_RM_BYTE_REGISTER(rh); | |
986 | DECODE_PRINTF("\n"); | |
987 | TRACE_AND_STEP(); | |
988 | destval = adc_byte(destval, *srcreg); | |
989 | store_data_byte(destoffset, destval); | |
990 | break; | |
991 | case 3: /* register to register */ | |
992 | destreg = DECODE_RM_BYTE_REGISTER(rl); | |
993 | DECODE_PRINTF(","); | |
994 | srcreg = DECODE_RM_BYTE_REGISTER(rh); | |
995 | DECODE_PRINTF("\n"); | |
996 | TRACE_AND_STEP(); | |
997 | *destreg = adc_byte(*destreg, *srcreg); | |
998 | break; | |
999 | } | |
1000 | DECODE_CLEAR_SEGOVR(); | |
1001 | END_OF_INSTR(); | |
1002 | } | |
1003 | ||
1004 | /**************************************************************************** | |
1005 | REMARKS: | |
1006 | Handles opcode 0x11 | |
1007 | ****************************************************************************/ | |
1008 | static void x86emuOp_adc_word_RM_R(u8 X86EMU_UNUSED(op1)) | |
1009 | { | |
1010 | int mod, rl, rh; | |
1011 | uint destoffset; | |
1012 | ||
1013 | START_OF_INSTR(); | |
1014 | DECODE_PRINTF("ADC\t"); | |
1015 | FETCH_DECODE_MODRM(mod, rh, rl); | |
1016 | switch (mod) { | |
1017 | case 0: | |
1018 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
1019 | u32 destval; | |
1020 | u32 *srcreg; | |
1021 | ||
1022 | destoffset = decode_rm00_address(rl); | |
1023 | DECODE_PRINTF(","); | |
1024 | destval = fetch_data_long(destoffset); | |
1025 | srcreg = DECODE_RM_LONG_REGISTER(rh); | |
1026 | DECODE_PRINTF("\n"); | |
1027 | TRACE_AND_STEP(); | |
1028 | destval = adc_long(destval, *srcreg); | |
1029 | store_data_long(destoffset, destval); | |
1030 | } else { | |
1031 | u16 destval; | |
1032 | u16 *srcreg; | |
1033 | ||
1034 | destoffset = decode_rm00_address(rl); | |
1035 | DECODE_PRINTF(","); | |
1036 | destval = fetch_data_word(destoffset); | |
1037 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
1038 | DECODE_PRINTF("\n"); | |
1039 | TRACE_AND_STEP(); | |
1040 | destval = adc_word(destval, *srcreg); | |
1041 | store_data_word(destoffset, destval); | |
1042 | } | |
1043 | break; | |
1044 | case 1: | |
1045 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
1046 | u32 destval; | |
1047 | u32 *srcreg; | |
1048 | ||
1049 | destoffset = decode_rm01_address(rl); | |
1050 | DECODE_PRINTF(","); | |
1051 | destval = fetch_data_long(destoffset); | |
1052 | srcreg = DECODE_RM_LONG_REGISTER(rh); | |
1053 | DECODE_PRINTF("\n"); | |
1054 | TRACE_AND_STEP(); | |
1055 | destval = adc_long(destval, *srcreg); | |
1056 | store_data_long(destoffset, destval); | |
1057 | } else { | |
1058 | u16 destval; | |
1059 | u16 *srcreg; | |
1060 | ||
1061 | destoffset = decode_rm01_address(rl); | |
1062 | DECODE_PRINTF(","); | |
1063 | destval = fetch_data_word(destoffset); | |
1064 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
1065 | DECODE_PRINTF("\n"); | |
1066 | TRACE_AND_STEP(); | |
1067 | destval = adc_word(destval, *srcreg); | |
1068 | store_data_word(destoffset, destval); | |
1069 | } | |
1070 | break; | |
1071 | case 2: | |
1072 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
1073 | u32 destval; | |
1074 | u32 *srcreg; | |
1075 | ||
1076 | destoffset = decode_rm10_address(rl); | |
1077 | DECODE_PRINTF(","); | |
1078 | destval = fetch_data_long(destoffset); | |
1079 | srcreg = DECODE_RM_LONG_REGISTER(rh); | |
1080 | DECODE_PRINTF("\n"); | |
1081 | TRACE_AND_STEP(); | |
1082 | destval = adc_long(destval, *srcreg); | |
1083 | store_data_long(destoffset, destval); | |
1084 | } else { | |
1085 | u16 destval; | |
1086 | u16 *srcreg; | |
1087 | ||
1088 | destoffset = decode_rm10_address(rl); | |
1089 | DECODE_PRINTF(","); | |
1090 | destval = fetch_data_word(destoffset); | |
1091 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
1092 | DECODE_PRINTF("\n"); | |
1093 | TRACE_AND_STEP(); | |
1094 | destval = adc_word(destval, *srcreg); | |
1095 | store_data_word(destoffset, destval); | |
1096 | } | |
1097 | break; | |
1098 | case 3: /* register to register */ | |
1099 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
1100 | u32 *destreg,*srcreg; | |
1101 | ||
1102 | destreg = DECODE_RM_LONG_REGISTER(rl); | |
1103 | DECODE_PRINTF(","); | |
1104 | srcreg = DECODE_RM_LONG_REGISTER(rh); | |
1105 | DECODE_PRINTF("\n"); | |
1106 | TRACE_AND_STEP(); | |
1107 | *destreg = adc_long(*destreg, *srcreg); | |
1108 | } else { | |
1109 | u16 *destreg,*srcreg; | |
1110 | ||
1111 | destreg = DECODE_RM_WORD_REGISTER(rl); | |
1112 | DECODE_PRINTF(","); | |
1113 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
1114 | DECODE_PRINTF("\n"); | |
1115 | TRACE_AND_STEP(); | |
1116 | *destreg = adc_word(*destreg, *srcreg); | |
1117 | } | |
1118 | break; | |
1119 | } | |
1120 | DECODE_CLEAR_SEGOVR(); | |
1121 | END_OF_INSTR(); | |
1122 | } | |
1123 | ||
1124 | /**************************************************************************** | |
1125 | REMARKS: | |
1126 | Handles opcode 0x12 | |
1127 | ****************************************************************************/ | |
1128 | static void x86emuOp_adc_byte_R_RM(u8 X86EMU_UNUSED(op1)) | |
1129 | { | |
1130 | int mod, rl, rh; | |
1131 | u8 *destreg, *srcreg; | |
1132 | uint srcoffset; | |
1133 | u8 srcval; | |
1134 | ||
1135 | START_OF_INSTR(); | |
1136 | DECODE_PRINTF("ADC\t"); | |
1137 | FETCH_DECODE_MODRM(mod, rh, rl); | |
1138 | switch (mod) { | |
1139 | case 0: | |
1140 | destreg = DECODE_RM_BYTE_REGISTER(rh); | |
1141 | DECODE_PRINTF(","); | |
1142 | srcoffset = decode_rm00_address(rl); | |
1143 | srcval = fetch_data_byte(srcoffset); | |
1144 | DECODE_PRINTF("\n"); | |
1145 | TRACE_AND_STEP(); | |
1146 | *destreg = adc_byte(*destreg, srcval); | |
1147 | break; | |
1148 | case 1: | |
1149 | destreg = DECODE_RM_BYTE_REGISTER(rh); | |
1150 | DECODE_PRINTF(","); | |
1151 | srcoffset = decode_rm01_address(rl); | |
1152 | srcval = fetch_data_byte(srcoffset); | |
1153 | DECODE_PRINTF("\n"); | |
1154 | TRACE_AND_STEP(); | |
1155 | *destreg = adc_byte(*destreg, srcval); | |
1156 | break; | |
1157 | case 2: | |
1158 | destreg = DECODE_RM_BYTE_REGISTER(rh); | |
1159 | DECODE_PRINTF(","); | |
1160 | srcoffset = decode_rm10_address(rl); | |
1161 | srcval = fetch_data_byte(srcoffset); | |
1162 | DECODE_PRINTF("\n"); | |
1163 | TRACE_AND_STEP(); | |
1164 | *destreg = adc_byte(*destreg, srcval); | |
1165 | break; | |
1166 | case 3: /* register to register */ | |
1167 | destreg = DECODE_RM_BYTE_REGISTER(rh); | |
1168 | DECODE_PRINTF(","); | |
1169 | srcreg = DECODE_RM_BYTE_REGISTER(rl); | |
1170 | DECODE_PRINTF("\n"); | |
1171 | TRACE_AND_STEP(); | |
1172 | *destreg = adc_byte(*destreg, *srcreg); | |
1173 | break; | |
1174 | } | |
1175 | DECODE_CLEAR_SEGOVR(); | |
1176 | END_OF_INSTR(); | |
1177 | } | |
1178 | ||
1179 | /**************************************************************************** | |
1180 | REMARKS: | |
1181 | Handles opcode 0x13 | |
1182 | ****************************************************************************/ | |
1183 | static void x86emuOp_adc_word_R_RM(u8 X86EMU_UNUSED(op1)) | |
1184 | { | |
1185 | int mod, rl, rh; | |
1186 | uint srcoffset; | |
1187 | ||
1188 | START_OF_INSTR(); | |
1189 | DECODE_PRINTF("ADC\t"); | |
1190 | FETCH_DECODE_MODRM(mod, rh, rl); | |
1191 | switch (mod) { | |
1192 | case 0: | |
1193 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
1194 | u32 *destreg; | |
1195 | u32 srcval; | |
1196 | ||
1197 | destreg = DECODE_RM_LONG_REGISTER(rh); | |
1198 | DECODE_PRINTF(","); | |
1199 | srcoffset = decode_rm00_address(rl); | |
1200 | srcval = fetch_data_long(srcoffset); | |
1201 | DECODE_PRINTF("\n"); | |
1202 | TRACE_AND_STEP(); | |
1203 | *destreg = adc_long(*destreg, srcval); | |
1204 | } else { | |
1205 | u16 *destreg; | |
1206 | u16 srcval; | |
1207 | ||
1208 | destreg = DECODE_RM_WORD_REGISTER(rh); | |
1209 | DECODE_PRINTF(","); | |
1210 | srcoffset = decode_rm00_address(rl); | |
1211 | srcval = fetch_data_word(srcoffset); | |
1212 | DECODE_PRINTF("\n"); | |
1213 | TRACE_AND_STEP(); | |
1214 | *destreg = adc_word(*destreg, srcval); | |
1215 | } | |
1216 | break; | |
1217 | case 1: | |
1218 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
1219 | u32 *destreg; | |
1220 | u32 srcval; | |
1221 | ||
1222 | destreg = DECODE_RM_LONG_REGISTER(rh); | |
1223 | DECODE_PRINTF(","); | |
1224 | srcoffset = decode_rm01_address(rl); | |
1225 | srcval = fetch_data_long(srcoffset); | |
1226 | DECODE_PRINTF("\n"); | |
1227 | TRACE_AND_STEP(); | |
1228 | *destreg = adc_long(*destreg, srcval); | |
1229 | } else { | |
1230 | u16 *destreg; | |
1231 | u16 srcval; | |
1232 | ||
1233 | destreg = DECODE_RM_WORD_REGISTER(rh); | |
1234 | DECODE_PRINTF(","); | |
1235 | srcoffset = decode_rm01_address(rl); | |
1236 | srcval = fetch_data_word(srcoffset); | |
1237 | DECODE_PRINTF("\n"); | |
1238 | TRACE_AND_STEP(); | |
1239 | *destreg = adc_word(*destreg, srcval); | |
1240 | } | |
1241 | break; | |
1242 | case 2: | |
1243 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
1244 | u32 *destreg; | |
1245 | u32 srcval; | |
1246 | ||
1247 | destreg = DECODE_RM_LONG_REGISTER(rh); | |
1248 | DECODE_PRINTF(","); | |
1249 | srcoffset = decode_rm10_address(rl); | |
1250 | srcval = fetch_data_long(srcoffset); | |
1251 | DECODE_PRINTF("\n"); | |
1252 | TRACE_AND_STEP(); | |
1253 | *destreg = adc_long(*destreg, srcval); | |
1254 | } else { | |
1255 | u16 *destreg; | |
1256 | u16 srcval; | |
1257 | ||
1258 | destreg = DECODE_RM_WORD_REGISTER(rh); | |
1259 | DECODE_PRINTF(","); | |
1260 | srcoffset = decode_rm10_address(rl); | |
1261 | srcval = fetch_data_word(srcoffset); | |
1262 | DECODE_PRINTF("\n"); | |
1263 | TRACE_AND_STEP(); | |
1264 | *destreg = adc_word(*destreg, srcval); | |
1265 | } | |
1266 | break; | |
1267 | case 3: /* register to register */ | |
1268 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
1269 | u32 *destreg,*srcreg; | |
1270 | ||
1271 | destreg = DECODE_RM_LONG_REGISTER(rh); | |
1272 | DECODE_PRINTF(","); | |
1273 | srcreg = DECODE_RM_LONG_REGISTER(rl); | |
1274 | DECODE_PRINTF("\n"); | |
1275 | TRACE_AND_STEP(); | |
1276 | *destreg = adc_long(*destreg, *srcreg); | |
1277 | } else { | |
1278 | u16 *destreg,*srcreg; | |
1279 | ||
1280 | destreg = DECODE_RM_WORD_REGISTER(rh); | |
1281 | DECODE_PRINTF(","); | |
1282 | srcreg = DECODE_RM_WORD_REGISTER(rl); | |
1283 | DECODE_PRINTF("\n"); | |
1284 | TRACE_AND_STEP(); | |
1285 | *destreg = adc_word(*destreg, *srcreg); | |
1286 | } | |
1287 | break; | |
1288 | } | |
1289 | DECODE_CLEAR_SEGOVR(); | |
1290 | END_OF_INSTR(); | |
1291 | } | |
1292 | ||
1293 | /**************************************************************************** | |
1294 | REMARKS: | |
1295 | Handles opcode 0x14 | |
1296 | ****************************************************************************/ | |
1297 | static void x86emuOp_adc_byte_AL_IMM(u8 X86EMU_UNUSED(op1)) | |
1298 | { | |
1299 | u8 srcval; | |
1300 | ||
1301 | START_OF_INSTR(); | |
1302 | DECODE_PRINTF("ADC\tAL,"); | |
1303 | srcval = fetch_byte_imm(); | |
1304 | DECODE_PRINTF2("%x\n", srcval); | |
1305 | TRACE_AND_STEP(); | |
1306 | M.x86.R_AL = adc_byte(M.x86.R_AL, srcval); | |
1307 | DECODE_CLEAR_SEGOVR(); | |
1308 | END_OF_INSTR(); | |
1309 | } | |
1310 | ||
1311 | /**************************************************************************** | |
1312 | REMARKS: | |
1313 | Handles opcode 0x15 | |
1314 | ****************************************************************************/ | |
1315 | static void x86emuOp_adc_word_AX_IMM(u8 X86EMU_UNUSED(op1)) | |
1316 | { | |
1317 | u32 srcval; | |
1318 | ||
1319 | START_OF_INSTR(); | |
1320 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
1321 | DECODE_PRINTF("ADC\tEAX,"); | |
1322 | srcval = fetch_long_imm(); | |
1323 | } else { | |
1324 | DECODE_PRINTF("ADC\tAX,"); | |
1325 | srcval = fetch_word_imm(); | |
1326 | } | |
1327 | DECODE_PRINTF2("%x\n", srcval); | |
1328 | TRACE_AND_STEP(); | |
1329 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
1330 | M.x86.R_EAX = adc_long(M.x86.R_EAX, srcval); | |
1331 | } else { | |
1332 | M.x86.R_AX = adc_word(M.x86.R_AX, (u16)srcval); | |
1333 | } | |
1334 | DECODE_CLEAR_SEGOVR(); | |
1335 | END_OF_INSTR(); | |
1336 | } | |
1337 | ||
1338 | /**************************************************************************** | |
1339 | REMARKS: | |
1340 | Handles opcode 0x16 | |
1341 | ****************************************************************************/ | |
1342 | static void x86emuOp_push_SS(u8 X86EMU_UNUSED(op1)) | |
1343 | { | |
1344 | START_OF_INSTR(); | |
1345 | DECODE_PRINTF("PUSH\tSS\n"); | |
1346 | TRACE_AND_STEP(); | |
1347 | push_word(M.x86.R_SS); | |
1348 | DECODE_CLEAR_SEGOVR(); | |
1349 | END_OF_INSTR(); | |
1350 | } | |
1351 | ||
1352 | /**************************************************************************** | |
1353 | REMARKS: | |
1354 | Handles opcode 0x17 | |
1355 | ****************************************************************************/ | |
1356 | static void x86emuOp_pop_SS(u8 X86EMU_UNUSED(op1)) | |
1357 | { | |
1358 | START_OF_INSTR(); | |
1359 | DECODE_PRINTF("POP\tSS\n"); | |
1360 | TRACE_AND_STEP(); | |
1361 | M.x86.R_SS = pop_word(); | |
1362 | DECODE_CLEAR_SEGOVR(); | |
1363 | END_OF_INSTR(); | |
1364 | } | |
1365 | ||
1366 | /**************************************************************************** | |
1367 | REMARKS: | |
1368 | Handles opcode 0x18 | |
1369 | ****************************************************************************/ | |
1370 | static void x86emuOp_sbb_byte_RM_R(u8 X86EMU_UNUSED(op1)) | |
1371 | { | |
1372 | int mod, rl, rh; | |
1373 | u8 *destreg, *srcreg; | |
1374 | uint destoffset; | |
1375 | u8 destval; | |
1376 | ||
1377 | START_OF_INSTR(); | |
1378 | DECODE_PRINTF("SBB\t"); | |
1379 | FETCH_DECODE_MODRM(mod, rh, rl); | |
1380 | switch (mod) { | |
1381 | case 0: | |
1382 | destoffset = decode_rm00_address(rl); | |
1383 | DECODE_PRINTF(","); | |
1384 | destval = fetch_data_byte(destoffset); | |
1385 | srcreg = DECODE_RM_BYTE_REGISTER(rh); | |
1386 | DECODE_PRINTF("\n"); | |
1387 | TRACE_AND_STEP(); | |
1388 | destval = sbb_byte(destval, *srcreg); | |
1389 | store_data_byte(destoffset, destval); | |
1390 | break; | |
1391 | case 1: | |
1392 | destoffset = decode_rm01_address(rl); | |
1393 | DECODE_PRINTF(","); | |
1394 | destval = fetch_data_byte(destoffset); | |
1395 | srcreg = DECODE_RM_BYTE_REGISTER(rh); | |
1396 | DECODE_PRINTF("\n"); | |
1397 | TRACE_AND_STEP(); | |
1398 | destval = sbb_byte(destval, *srcreg); | |
1399 | store_data_byte(destoffset, destval); | |
1400 | break; | |
1401 | case 2: | |
1402 | destoffset = decode_rm10_address(rl); | |
1403 | DECODE_PRINTF(","); | |
1404 | destval = fetch_data_byte(destoffset); | |
1405 | srcreg = DECODE_RM_BYTE_REGISTER(rh); | |
1406 | DECODE_PRINTF("\n"); | |
1407 | TRACE_AND_STEP(); | |
1408 | destval = sbb_byte(destval, *srcreg); | |
1409 | store_data_byte(destoffset, destval); | |
1410 | break; | |
1411 | case 3: /* register to register */ | |
1412 | destreg = DECODE_RM_BYTE_REGISTER(rl); | |
1413 | DECODE_PRINTF(","); | |
1414 | srcreg = DECODE_RM_BYTE_REGISTER(rh); | |
1415 | DECODE_PRINTF("\n"); | |
1416 | TRACE_AND_STEP(); | |
1417 | *destreg = sbb_byte(*destreg, *srcreg); | |
1418 | break; | |
1419 | } | |
1420 | DECODE_CLEAR_SEGOVR(); | |
1421 | END_OF_INSTR(); | |
1422 | } | |
1423 | ||
1424 | /**************************************************************************** | |
1425 | REMARKS: | |
1426 | Handles opcode 0x19 | |
1427 | ****************************************************************************/ | |
1428 | static void x86emuOp_sbb_word_RM_R(u8 X86EMU_UNUSED(op1)) | |
1429 | { | |
1430 | int mod, rl, rh; | |
1431 | uint destoffset; | |
1432 | ||
1433 | START_OF_INSTR(); | |
1434 | DECODE_PRINTF("SBB\t"); | |
1435 | FETCH_DECODE_MODRM(mod, rh, rl); | |
1436 | switch (mod) { | |
1437 | case 0: | |
1438 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
1439 | u32 destval; | |
1440 | u32 *srcreg; | |
1441 | ||
1442 | destoffset = decode_rm00_address(rl); | |
1443 | DECODE_PRINTF(","); | |
1444 | destval = fetch_data_long(destoffset); | |
1445 | srcreg = DECODE_RM_LONG_REGISTER(rh); | |
1446 | DECODE_PRINTF("\n"); | |
1447 | TRACE_AND_STEP(); | |
1448 | destval = sbb_long(destval, *srcreg); | |
1449 | store_data_long(destoffset, destval); | |
1450 | } else { | |
1451 | u16 destval; | |
1452 | u16 *srcreg; | |
1453 | ||
1454 | destoffset = decode_rm00_address(rl); | |
1455 | DECODE_PRINTF(","); | |
1456 | destval = fetch_data_word(destoffset); | |
1457 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
1458 | DECODE_PRINTF("\n"); | |
1459 | TRACE_AND_STEP(); | |
1460 | destval = sbb_word(destval, *srcreg); | |
1461 | store_data_word(destoffset, destval); | |
1462 | } | |
1463 | break; | |
1464 | case 1: | |
1465 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
1466 | u32 destval; | |
1467 | u32 *srcreg; | |
1468 | ||
1469 | destoffset = decode_rm01_address(rl); | |
1470 | DECODE_PRINTF(","); | |
1471 | destval = fetch_data_long(destoffset); | |
1472 | srcreg = DECODE_RM_LONG_REGISTER(rh); | |
1473 | DECODE_PRINTF("\n"); | |
1474 | TRACE_AND_STEP(); | |
1475 | destval = sbb_long(destval, *srcreg); | |
1476 | store_data_long(destoffset, destval); | |
1477 | } else { | |
1478 | u16 destval; | |
1479 | u16 *srcreg; | |
1480 | ||
1481 | destoffset = decode_rm01_address(rl); | |
1482 | DECODE_PRINTF(","); | |
1483 | destval = fetch_data_word(destoffset); | |
1484 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
1485 | DECODE_PRINTF("\n"); | |
1486 | TRACE_AND_STEP(); | |
1487 | destval = sbb_word(destval, *srcreg); | |
1488 | store_data_word(destoffset, destval); | |
1489 | } | |
1490 | break; | |
1491 | case 2: | |
1492 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
1493 | u32 destval; | |
1494 | u32 *srcreg; | |
1495 | ||
1496 | destoffset = decode_rm10_address(rl); | |
1497 | DECODE_PRINTF(","); | |
1498 | destval = fetch_data_long(destoffset); | |
1499 | srcreg = DECODE_RM_LONG_REGISTER(rh); | |
1500 | DECODE_PRINTF("\n"); | |
1501 | TRACE_AND_STEP(); | |
1502 | destval = sbb_long(destval, *srcreg); | |
1503 | store_data_long(destoffset, destval); | |
1504 | } else { | |
1505 | u16 destval; | |
1506 | u16 *srcreg; | |
1507 | ||
1508 | destoffset = decode_rm10_address(rl); | |
1509 | DECODE_PRINTF(","); | |
1510 | destval = fetch_data_word(destoffset); | |
1511 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
1512 | DECODE_PRINTF("\n"); | |
1513 | TRACE_AND_STEP(); | |
1514 | destval = sbb_word(destval, *srcreg); | |
1515 | store_data_word(destoffset, destval); | |
1516 | } | |
1517 | break; | |
1518 | case 3: /* register to register */ | |
1519 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
1520 | u32 *destreg,*srcreg; | |
1521 | ||
1522 | destreg = DECODE_RM_LONG_REGISTER(rl); | |
1523 | DECODE_PRINTF(","); | |
1524 | srcreg = DECODE_RM_LONG_REGISTER(rh); | |
1525 | DECODE_PRINTF("\n"); | |
1526 | TRACE_AND_STEP(); | |
1527 | *destreg = sbb_long(*destreg, *srcreg); | |
1528 | } else { | |
1529 | u16 *destreg,*srcreg; | |
1530 | ||
1531 | destreg = DECODE_RM_WORD_REGISTER(rl); | |
1532 | DECODE_PRINTF(","); | |
1533 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
1534 | DECODE_PRINTF("\n"); | |
1535 | TRACE_AND_STEP(); | |
1536 | *destreg = sbb_word(*destreg, *srcreg); | |
1537 | } | |
1538 | break; | |
1539 | } | |
1540 | DECODE_CLEAR_SEGOVR(); | |
1541 | END_OF_INSTR(); | |
1542 | } | |
1543 | ||
1544 | /**************************************************************************** | |
1545 | REMARKS: | |
1546 | Handles opcode 0x1a | |
1547 | ****************************************************************************/ | |
1548 | static void x86emuOp_sbb_byte_R_RM(u8 X86EMU_UNUSED(op1)) | |
1549 | { | |
1550 | int mod, rl, rh; | |
1551 | u8 *destreg, *srcreg; | |
1552 | uint srcoffset; | |
1553 | u8 srcval; | |
1554 | ||
1555 | START_OF_INSTR(); | |
1556 | DECODE_PRINTF("SBB\t"); | |
1557 | FETCH_DECODE_MODRM(mod, rh, rl); | |
1558 | switch (mod) { | |
1559 | case 0: | |
1560 | destreg = DECODE_RM_BYTE_REGISTER(rh); | |
1561 | DECODE_PRINTF(","); | |
1562 | srcoffset = decode_rm00_address(rl); | |
1563 | srcval = fetch_data_byte(srcoffset); | |
1564 | DECODE_PRINTF("\n"); | |
1565 | TRACE_AND_STEP(); | |
1566 | *destreg = sbb_byte(*destreg, srcval); | |
1567 | break; | |
1568 | case 1: | |
1569 | destreg = DECODE_RM_BYTE_REGISTER(rh); | |
1570 | DECODE_PRINTF(","); | |
1571 | srcoffset = decode_rm01_address(rl); | |
1572 | srcval = fetch_data_byte(srcoffset); | |
1573 | DECODE_PRINTF("\n"); | |
1574 | TRACE_AND_STEP(); | |
1575 | *destreg = sbb_byte(*destreg, srcval); | |
1576 | break; | |
1577 | case 2: | |
1578 | destreg = DECODE_RM_BYTE_REGISTER(rh); | |
1579 | DECODE_PRINTF(","); | |
1580 | srcoffset = decode_rm10_address(rl); | |
1581 | srcval = fetch_data_byte(srcoffset); | |
1582 | DECODE_PRINTF("\n"); | |
1583 | TRACE_AND_STEP(); | |
1584 | *destreg = sbb_byte(*destreg, srcval); | |
1585 | break; | |
1586 | case 3: /* register to register */ | |
1587 | destreg = DECODE_RM_BYTE_REGISTER(rh); | |
1588 | DECODE_PRINTF(","); | |
1589 | srcreg = DECODE_RM_BYTE_REGISTER(rl); | |
1590 | DECODE_PRINTF("\n"); | |
1591 | TRACE_AND_STEP(); | |
1592 | *destreg = sbb_byte(*destreg, *srcreg); | |
1593 | break; | |
1594 | } | |
1595 | DECODE_CLEAR_SEGOVR(); | |
1596 | END_OF_INSTR(); | |
1597 | } | |
1598 | ||
1599 | /**************************************************************************** | |
1600 | REMARKS: | |
1601 | Handles opcode 0x1b | |
1602 | ****************************************************************************/ | |
1603 | static void x86emuOp_sbb_word_R_RM(u8 X86EMU_UNUSED(op1)) | |
1604 | { | |
1605 | int mod, rl, rh; | |
1606 | uint srcoffset; | |
1607 | ||
1608 | START_OF_INSTR(); | |
1609 | DECODE_PRINTF("SBB\t"); | |
1610 | FETCH_DECODE_MODRM(mod, rh, rl); | |
1611 | switch (mod) { | |
1612 | case 0: | |
1613 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
1614 | u32 *destreg; | |
1615 | u32 srcval; | |
1616 | ||
1617 | destreg = DECODE_RM_LONG_REGISTER(rh); | |
1618 | DECODE_PRINTF(","); | |
1619 | srcoffset = decode_rm00_address(rl); | |
1620 | srcval = fetch_data_long(srcoffset); | |
1621 | DECODE_PRINTF("\n"); | |
1622 | TRACE_AND_STEP(); | |
1623 | *destreg = sbb_long(*destreg, srcval); | |
1624 | } else { | |
1625 | u16 *destreg; | |
1626 | u16 srcval; | |
1627 | ||
1628 | destreg = DECODE_RM_WORD_REGISTER(rh); | |
1629 | DECODE_PRINTF(","); | |
1630 | srcoffset = decode_rm00_address(rl); | |
1631 | srcval = fetch_data_word(srcoffset); | |
1632 | DECODE_PRINTF("\n"); | |
1633 | TRACE_AND_STEP(); | |
1634 | *destreg = sbb_word(*destreg, srcval); | |
1635 | } | |
1636 | break; | |
1637 | case 1: | |
1638 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
1639 | u32 *destreg; | |
1640 | u32 srcval; | |
1641 | ||
1642 | destreg = DECODE_RM_LONG_REGISTER(rh); | |
1643 | DECODE_PRINTF(","); | |
1644 | srcoffset = decode_rm01_address(rl); | |
1645 | srcval = fetch_data_long(srcoffset); | |
1646 | DECODE_PRINTF("\n"); | |
1647 | TRACE_AND_STEP(); | |
1648 | *destreg = sbb_long(*destreg, srcval); | |
1649 | } else { | |
1650 | u16 *destreg; | |
1651 | u16 srcval; | |
1652 | ||
1653 | destreg = DECODE_RM_WORD_REGISTER(rh); | |
1654 | DECODE_PRINTF(","); | |
1655 | srcoffset = decode_rm01_address(rl); | |
1656 | srcval = fetch_data_word(srcoffset); | |
1657 | DECODE_PRINTF("\n"); | |
1658 | TRACE_AND_STEP(); | |
1659 | *destreg = sbb_word(*destreg, srcval); | |
1660 | } | |
1661 | break; | |
1662 | case 2: | |
1663 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
1664 | u32 *destreg; | |
1665 | u32 srcval; | |
1666 | ||
1667 | destreg = DECODE_RM_LONG_REGISTER(rh); | |
1668 | DECODE_PRINTF(","); | |
1669 | srcoffset = decode_rm10_address(rl); | |
1670 | srcval = fetch_data_long(srcoffset); | |
1671 | DECODE_PRINTF("\n"); | |
1672 | TRACE_AND_STEP(); | |
1673 | *destreg = sbb_long(*destreg, srcval); | |
1674 | } else { | |
1675 | u16 *destreg; | |
1676 | u16 srcval; | |
1677 | ||
1678 | destreg = DECODE_RM_WORD_REGISTER(rh); | |
1679 | DECODE_PRINTF(","); | |
1680 | srcoffset = decode_rm10_address(rl); | |
1681 | srcval = fetch_data_word(srcoffset); | |
1682 | DECODE_PRINTF("\n"); | |
1683 | TRACE_AND_STEP(); | |
1684 | *destreg = sbb_word(*destreg, srcval); | |
1685 | } | |
1686 | break; | |
1687 | case 3: /* register to register */ | |
1688 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
1689 | u32 *destreg,*srcreg; | |
1690 | ||
1691 | destreg = DECODE_RM_LONG_REGISTER(rh); | |
1692 | DECODE_PRINTF(","); | |
1693 | srcreg = DECODE_RM_LONG_REGISTER(rl); | |
1694 | DECODE_PRINTF("\n"); | |
1695 | TRACE_AND_STEP(); | |
1696 | *destreg = sbb_long(*destreg, *srcreg); | |
1697 | } else { | |
1698 | u16 *destreg,*srcreg; | |
1699 | ||
1700 | destreg = DECODE_RM_WORD_REGISTER(rh); | |
1701 | DECODE_PRINTF(","); | |
1702 | srcreg = DECODE_RM_WORD_REGISTER(rl); | |
1703 | DECODE_PRINTF("\n"); | |
1704 | TRACE_AND_STEP(); | |
1705 | *destreg = sbb_word(*destreg, *srcreg); | |
1706 | } | |
1707 | break; | |
1708 | } | |
1709 | DECODE_CLEAR_SEGOVR(); | |
1710 | END_OF_INSTR(); | |
1711 | } | |
1712 | ||
1713 | /**************************************************************************** | |
1714 | REMARKS: | |
1715 | Handles opcode 0x1c | |
1716 | ****************************************************************************/ | |
1717 | static void x86emuOp_sbb_byte_AL_IMM(u8 X86EMU_UNUSED(op1)) | |
1718 | { | |
1719 | u8 srcval; | |
1720 | ||
1721 | START_OF_INSTR(); | |
1722 | DECODE_PRINTF("SBB\tAL,"); | |
1723 | srcval = fetch_byte_imm(); | |
1724 | DECODE_PRINTF2("%x\n", srcval); | |
1725 | TRACE_AND_STEP(); | |
1726 | M.x86.R_AL = sbb_byte(M.x86.R_AL, srcval); | |
1727 | DECODE_CLEAR_SEGOVR(); | |
1728 | END_OF_INSTR(); | |
1729 | } | |
1730 | ||
1731 | /**************************************************************************** | |
1732 | REMARKS: | |
1733 | Handles opcode 0x1d | |
1734 | ****************************************************************************/ | |
1735 | static void x86emuOp_sbb_word_AX_IMM(u8 X86EMU_UNUSED(op1)) | |
1736 | { | |
1737 | u32 srcval; | |
1738 | ||
1739 | START_OF_INSTR(); | |
1740 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
1741 | DECODE_PRINTF("SBB\tEAX,"); | |
1742 | srcval = fetch_long_imm(); | |
1743 | } else { | |
1744 | DECODE_PRINTF("SBB\tAX,"); | |
1745 | srcval = fetch_word_imm(); | |
1746 | } | |
1747 | DECODE_PRINTF2("%x\n", srcval); | |
1748 | TRACE_AND_STEP(); | |
1749 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
1750 | M.x86.R_EAX = sbb_long(M.x86.R_EAX, srcval); | |
1751 | } else { | |
1752 | M.x86.R_AX = sbb_word(M.x86.R_AX, (u16)srcval); | |
1753 | } | |
1754 | DECODE_CLEAR_SEGOVR(); | |
1755 | END_OF_INSTR(); | |
1756 | } | |
1757 | ||
1758 | /**************************************************************************** | |
1759 | REMARKS: | |
1760 | Handles opcode 0x1e | |
1761 | ****************************************************************************/ | |
1762 | static void x86emuOp_push_DS(u8 X86EMU_UNUSED(op1)) | |
1763 | { | |
1764 | START_OF_INSTR(); | |
1765 | DECODE_PRINTF("PUSH\tDS\n"); | |
1766 | TRACE_AND_STEP(); | |
1767 | push_word(M.x86.R_DS); | |
1768 | DECODE_CLEAR_SEGOVR(); | |
1769 | END_OF_INSTR(); | |
1770 | } | |
1771 | ||
1772 | /**************************************************************************** | |
1773 | REMARKS: | |
1774 | Handles opcode 0x1f | |
1775 | ****************************************************************************/ | |
1776 | static void x86emuOp_pop_DS(u8 X86EMU_UNUSED(op1)) | |
1777 | { | |
1778 | START_OF_INSTR(); | |
1779 | DECODE_PRINTF("POP\tDS\n"); | |
1780 | TRACE_AND_STEP(); | |
1781 | M.x86.R_DS = pop_word(); | |
1782 | DECODE_CLEAR_SEGOVR(); | |
1783 | END_OF_INSTR(); | |
1784 | } | |
1785 | ||
1786 | /**************************************************************************** | |
1787 | REMARKS: | |
1788 | Handles opcode 0x20 | |
1789 | ****************************************************************************/ | |
1790 | static void x86emuOp_and_byte_RM_R(u8 X86EMU_UNUSED(op1)) | |
1791 | { | |
1792 | int mod, rl, rh; | |
1793 | u8 *destreg, *srcreg; | |
1794 | uint destoffset; | |
1795 | u8 destval; | |
1796 | ||
1797 | START_OF_INSTR(); | |
1798 | DECODE_PRINTF("AND\t"); | |
1799 | FETCH_DECODE_MODRM(mod, rh, rl); | |
1800 | ||
1801 | switch (mod) { | |
1802 | case 0: | |
1803 | destoffset = decode_rm00_address(rl); | |
1804 | DECODE_PRINTF(","); | |
1805 | destval = fetch_data_byte(destoffset); | |
1806 | srcreg = DECODE_RM_BYTE_REGISTER(rh); | |
1807 | DECODE_PRINTF("\n"); | |
1808 | TRACE_AND_STEP(); | |
1809 | destval = and_byte(destval, *srcreg); | |
1810 | store_data_byte(destoffset, destval); | |
1811 | break; | |
1812 | ||
1813 | case 1: | |
1814 | destoffset = decode_rm01_address(rl); | |
1815 | DECODE_PRINTF(","); | |
1816 | destval = fetch_data_byte(destoffset); | |
1817 | srcreg = DECODE_RM_BYTE_REGISTER(rh); | |
1818 | DECODE_PRINTF("\n"); | |
1819 | TRACE_AND_STEP(); | |
1820 | destval = and_byte(destval, *srcreg); | |
1821 | store_data_byte(destoffset, destval); | |
1822 | break; | |
1823 | ||
1824 | case 2: | |
1825 | destoffset = decode_rm10_address(rl); | |
1826 | DECODE_PRINTF(","); | |
1827 | destval = fetch_data_byte(destoffset); | |
1828 | srcreg = DECODE_RM_BYTE_REGISTER(rh); | |
1829 | DECODE_PRINTF("\n"); | |
1830 | TRACE_AND_STEP(); | |
1831 | destval = and_byte(destval, *srcreg); | |
1832 | store_data_byte(destoffset, destval); | |
1833 | break; | |
1834 | ||
1835 | case 3: /* register to register */ | |
1836 | destreg = DECODE_RM_BYTE_REGISTER(rl); | |
1837 | DECODE_PRINTF(","); | |
1838 | srcreg = DECODE_RM_BYTE_REGISTER(rh); | |
1839 | DECODE_PRINTF("\n"); | |
1840 | TRACE_AND_STEP(); | |
1841 | *destreg = and_byte(*destreg, *srcreg); | |
1842 | break; | |
1843 | } | |
1844 | DECODE_CLEAR_SEGOVR(); | |
1845 | END_OF_INSTR(); | |
1846 | } | |
1847 | ||
1848 | /**************************************************************************** | |
1849 | REMARKS: | |
1850 | Handles opcode 0x21 | |
1851 | ****************************************************************************/ | |
1852 | static void x86emuOp_and_word_RM_R(u8 X86EMU_UNUSED(op1)) | |
1853 | { | |
1854 | int mod, rl, rh; | |
1855 | uint destoffset; | |
1856 | ||
1857 | START_OF_INSTR(); | |
1858 | DECODE_PRINTF("AND\t"); | |
1859 | FETCH_DECODE_MODRM(mod, rh, rl); | |
1860 | switch (mod) { | |
1861 | case 0: | |
1862 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
1863 | u32 destval; | |
1864 | u32 *srcreg; | |
1865 | ||
1866 | destoffset = decode_rm00_address(rl); | |
1867 | DECODE_PRINTF(","); | |
1868 | destval = fetch_data_long(destoffset); | |
1869 | srcreg = DECODE_RM_LONG_REGISTER(rh); | |
1870 | DECODE_PRINTF("\n"); | |
1871 | TRACE_AND_STEP(); | |
1872 | destval = and_long(destval, *srcreg); | |
1873 | store_data_long(destoffset, destval); | |
1874 | } else { | |
1875 | u16 destval; | |
1876 | u16 *srcreg; | |
1877 | ||
1878 | destoffset = decode_rm00_address(rl); | |
1879 | DECODE_PRINTF(","); | |
1880 | destval = fetch_data_word(destoffset); | |
1881 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
1882 | DECODE_PRINTF("\n"); | |
1883 | TRACE_AND_STEP(); | |
1884 | destval = and_word(destval, *srcreg); | |
1885 | store_data_word(destoffset, destval); | |
1886 | } | |
1887 | break; | |
1888 | case 1: | |
1889 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
1890 | u32 destval; | |
1891 | u32 *srcreg; | |
1892 | ||
1893 | destoffset = decode_rm01_address(rl); | |
1894 | DECODE_PRINTF(","); | |
1895 | destval = fetch_data_long(destoffset); | |
1896 | srcreg = DECODE_RM_LONG_REGISTER(rh); | |
1897 | DECODE_PRINTF("\n"); | |
1898 | TRACE_AND_STEP(); | |
1899 | destval = and_long(destval, *srcreg); | |
1900 | store_data_long(destoffset, destval); | |
1901 | } else { | |
1902 | u16 destval; | |
1903 | u16 *srcreg; | |
1904 | ||
1905 | destoffset = decode_rm01_address(rl); | |
1906 | DECODE_PRINTF(","); | |
1907 | destval = fetch_data_word(destoffset); | |
1908 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
1909 | DECODE_PRINTF("\n"); | |
1910 | TRACE_AND_STEP(); | |
1911 | destval = and_word(destval, *srcreg); | |
1912 | store_data_word(destoffset, destval); | |
1913 | } | |
1914 | break; | |
1915 | case 2: | |
1916 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
1917 | u32 destval; | |
1918 | u32 *srcreg; | |
1919 | ||
1920 | destoffset = decode_rm10_address(rl); | |
1921 | DECODE_PRINTF(","); | |
1922 | destval = fetch_data_long(destoffset); | |
1923 | srcreg = DECODE_RM_LONG_REGISTER(rh); | |
1924 | DECODE_PRINTF("\n"); | |
1925 | TRACE_AND_STEP(); | |
1926 | destval = and_long(destval, *srcreg); | |
1927 | store_data_long(destoffset, destval); | |
1928 | } else { | |
1929 | u16 destval; | |
1930 | u16 *srcreg; | |
1931 | ||
1932 | destoffset = decode_rm10_address(rl); | |
1933 | DECODE_PRINTF(","); | |
1934 | destval = fetch_data_word(destoffset); | |
1935 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
1936 | DECODE_PRINTF("\n"); | |
1937 | TRACE_AND_STEP(); | |
1938 | destval = and_word(destval, *srcreg); | |
1939 | store_data_word(destoffset, destval); | |
1940 | } | |
1941 | break; | |
1942 | case 3: /* register to register */ | |
1943 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
1944 | u32 *destreg,*srcreg; | |
1945 | ||
1946 | destreg = DECODE_RM_LONG_REGISTER(rl); | |
1947 | DECODE_PRINTF(","); | |
1948 | srcreg = DECODE_RM_LONG_REGISTER(rh); | |
1949 | DECODE_PRINTF("\n"); | |
1950 | TRACE_AND_STEP(); | |
1951 | *destreg = and_long(*destreg, *srcreg); | |
1952 | } else { | |
1953 | u16 *destreg,*srcreg; | |
1954 | ||
1955 | destreg = DECODE_RM_WORD_REGISTER(rl); | |
1956 | DECODE_PRINTF(","); | |
1957 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
1958 | DECODE_PRINTF("\n"); | |
1959 | TRACE_AND_STEP(); | |
1960 | *destreg = and_word(*destreg, *srcreg); | |
1961 | } | |
1962 | break; | |
1963 | } | |
1964 | DECODE_CLEAR_SEGOVR(); | |
1965 | END_OF_INSTR(); | |
1966 | } | |
1967 | ||
1968 | /**************************************************************************** | |
1969 | REMARKS: | |
1970 | Handles opcode 0x22 | |
1971 | ****************************************************************************/ | |
1972 | static void x86emuOp_and_byte_R_RM(u8 X86EMU_UNUSED(op1)) | |
1973 | { | |
1974 | int mod, rl, rh; | |
1975 | u8 *destreg, *srcreg; | |
1976 | uint srcoffset; | |
1977 | u8 srcval; | |
1978 | ||
1979 | START_OF_INSTR(); | |
1980 | DECODE_PRINTF("AND\t"); | |
1981 | FETCH_DECODE_MODRM(mod, rh, rl); | |
1982 | switch (mod) { | |
1983 | case 0: | |
1984 | destreg = DECODE_RM_BYTE_REGISTER(rh); | |
1985 | DECODE_PRINTF(","); | |
1986 | srcoffset = decode_rm00_address(rl); | |
1987 | srcval = fetch_data_byte(srcoffset); | |
1988 | DECODE_PRINTF("\n"); | |
1989 | TRACE_AND_STEP(); | |
1990 | *destreg = and_byte(*destreg, srcval); | |
1991 | break; | |
1992 | case 1: | |
1993 | destreg = DECODE_RM_BYTE_REGISTER(rh); | |
1994 | DECODE_PRINTF(","); | |
1995 | srcoffset = decode_rm01_address(rl); | |
1996 | srcval = fetch_data_byte(srcoffset); | |
1997 | DECODE_PRINTF("\n"); | |
1998 | TRACE_AND_STEP(); | |
1999 | *destreg = and_byte(*destreg, srcval); | |
2000 | break; | |
2001 | case 2: | |
2002 | destreg = DECODE_RM_BYTE_REGISTER(rh); | |
2003 | DECODE_PRINTF(","); | |
2004 | srcoffset = decode_rm10_address(rl); | |
2005 | srcval = fetch_data_byte(srcoffset); | |
2006 | DECODE_PRINTF("\n"); | |
2007 | TRACE_AND_STEP(); | |
2008 | *destreg = and_byte(*destreg, srcval); | |
2009 | break; | |
2010 | case 3: /* register to register */ | |
2011 | destreg = DECODE_RM_BYTE_REGISTER(rh); | |
2012 | DECODE_PRINTF(","); | |
2013 | srcreg = DECODE_RM_BYTE_REGISTER(rl); | |
2014 | DECODE_PRINTF("\n"); | |
2015 | TRACE_AND_STEP(); | |
2016 | *destreg = and_byte(*destreg, *srcreg); | |
2017 | break; | |
2018 | } | |
2019 | DECODE_CLEAR_SEGOVR(); | |
2020 | END_OF_INSTR(); | |
2021 | } | |
2022 | ||
2023 | /**************************************************************************** | |
2024 | REMARKS: | |
2025 | Handles opcode 0x23 | |
2026 | ****************************************************************************/ | |
2027 | static void x86emuOp_and_word_R_RM(u8 X86EMU_UNUSED(op1)) | |
2028 | { | |
2029 | int mod, rl, rh; | |
2030 | uint srcoffset; | |
2031 | ||
2032 | START_OF_INSTR(); | |
2033 | DECODE_PRINTF("AND\t"); | |
2034 | FETCH_DECODE_MODRM(mod, rh, rl); | |
2035 | switch (mod) { | |
2036 | case 0: | |
2037 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
2038 | u32 *destreg; | |
2039 | u32 srcval; | |
2040 | ||
2041 | destreg = DECODE_RM_LONG_REGISTER(rh); | |
2042 | DECODE_PRINTF(","); | |
2043 | srcoffset = decode_rm00_address(rl); | |
2044 | srcval = fetch_data_long(srcoffset); | |
2045 | DECODE_PRINTF("\n"); | |
2046 | TRACE_AND_STEP(); | |
2047 | *destreg = and_long(*destreg, srcval); | |
2048 | } else { | |
2049 | u16 *destreg; | |
2050 | u16 srcval; | |
2051 | ||
2052 | destreg = DECODE_RM_WORD_REGISTER(rh); | |
2053 | DECODE_PRINTF(","); | |
2054 | srcoffset = decode_rm00_address(rl); | |
2055 | srcval = fetch_data_word(srcoffset); | |
2056 | DECODE_PRINTF("\n"); | |
2057 | TRACE_AND_STEP(); | |
2058 | *destreg = and_word(*destreg, srcval); | |
2059 | } | |
2060 | break; | |
2061 | case 1: | |
2062 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
2063 | u32 *destreg; | |
2064 | u32 srcval; | |
2065 | ||
2066 | destreg = DECODE_RM_LONG_REGISTER(rh); | |
2067 | DECODE_PRINTF(","); | |
2068 | srcoffset = decode_rm01_address(rl); | |
2069 | srcval = fetch_data_long(srcoffset); | |
2070 | DECODE_PRINTF("\n"); | |
2071 | TRACE_AND_STEP(); | |
2072 | *destreg = and_long(*destreg, srcval); | |
2073 | break; | |
2074 | } else { | |
2075 | u16 *destreg; | |
2076 | u16 srcval; | |
2077 | ||
2078 | destreg = DECODE_RM_WORD_REGISTER(rh); | |
2079 | DECODE_PRINTF(","); | |
2080 | srcoffset = decode_rm01_address(rl); | |
2081 | srcval = fetch_data_word(srcoffset); | |
2082 | DECODE_PRINTF("\n"); | |
2083 | TRACE_AND_STEP(); | |
2084 | *destreg = and_word(*destreg, srcval); | |
2085 | break; | |
2086 | } | |
2087 | case 2: | |
2088 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
2089 | u32 *destreg; | |
2090 | u32 srcval; | |
2091 | ||
2092 | destreg = DECODE_RM_LONG_REGISTER(rh); | |
2093 | DECODE_PRINTF(","); | |
2094 | srcoffset = decode_rm10_address(rl); | |
2095 | srcval = fetch_data_long(srcoffset); | |
2096 | DECODE_PRINTF("\n"); | |
2097 | TRACE_AND_STEP(); | |
2098 | *destreg = and_long(*destreg, srcval); | |
2099 | } else { | |
2100 | u16 *destreg; | |
2101 | u16 srcval; | |
2102 | ||
2103 | destreg = DECODE_RM_WORD_REGISTER(rh); | |
2104 | DECODE_PRINTF(","); | |
2105 | srcoffset = decode_rm10_address(rl); | |
2106 | srcval = fetch_data_word(srcoffset); | |
2107 | DECODE_PRINTF("\n"); | |
2108 | TRACE_AND_STEP(); | |
2109 | *destreg = and_word(*destreg, srcval); | |
2110 | } | |
2111 | break; | |
2112 | case 3: /* register to register */ | |
2113 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
2114 | u32 *destreg,*srcreg; | |
2115 | ||
2116 | destreg = DECODE_RM_LONG_REGISTER(rh); | |
2117 | DECODE_PRINTF(","); | |
2118 | srcreg = DECODE_RM_LONG_REGISTER(rl); | |
2119 | DECODE_PRINTF("\n"); | |
2120 | TRACE_AND_STEP(); | |
2121 | *destreg = and_long(*destreg, *srcreg); | |
2122 | } else { | |
2123 | u16 *destreg,*srcreg; | |
2124 | ||
2125 | destreg = DECODE_RM_WORD_REGISTER(rh); | |
2126 | DECODE_PRINTF(","); | |
2127 | srcreg = DECODE_RM_WORD_REGISTER(rl); | |
2128 | DECODE_PRINTF("\n"); | |
2129 | TRACE_AND_STEP(); | |
2130 | *destreg = and_word(*destreg, *srcreg); | |
2131 | } | |
2132 | break; | |
2133 | } | |
2134 | DECODE_CLEAR_SEGOVR(); | |
2135 | END_OF_INSTR(); | |
2136 | } | |
2137 | ||
2138 | /**************************************************************************** | |
2139 | REMARKS: | |
2140 | Handles opcode 0x24 | |
2141 | ****************************************************************************/ | |
2142 | static void x86emuOp_and_byte_AL_IMM(u8 X86EMU_UNUSED(op1)) | |
2143 | { | |
2144 | u8 srcval; | |
2145 | ||
2146 | START_OF_INSTR(); | |
2147 | DECODE_PRINTF("AND\tAL,"); | |
2148 | srcval = fetch_byte_imm(); | |
2149 | DECODE_PRINTF2("%x\n", srcval); | |
2150 | TRACE_AND_STEP(); | |
2151 | M.x86.R_AL = and_byte(M.x86.R_AL, srcval); | |
2152 | DECODE_CLEAR_SEGOVR(); | |
2153 | END_OF_INSTR(); | |
2154 | } | |
2155 | ||
2156 | /**************************************************************************** | |
2157 | REMARKS: | |
2158 | Handles opcode 0x25 | |
2159 | ****************************************************************************/ | |
2160 | static void x86emuOp_and_word_AX_IMM(u8 X86EMU_UNUSED(op1)) | |
2161 | { | |
2162 | u32 srcval; | |
2163 | ||
2164 | START_OF_INSTR(); | |
2165 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
2166 | DECODE_PRINTF("AND\tEAX,"); | |
2167 | srcval = fetch_long_imm(); | |
2168 | } else { | |
2169 | DECODE_PRINTF("AND\tAX,"); | |
2170 | srcval = fetch_word_imm(); | |
2171 | } | |
2172 | DECODE_PRINTF2("%x\n", srcval); | |
2173 | TRACE_AND_STEP(); | |
2174 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
2175 | M.x86.R_EAX = and_long(M.x86.R_EAX, srcval); | |
2176 | } else { | |
2177 | M.x86.R_AX = and_word(M.x86.R_AX, (u16)srcval); | |
2178 | } | |
2179 | DECODE_CLEAR_SEGOVR(); | |
2180 | END_OF_INSTR(); | |
2181 | } | |
2182 | ||
2183 | /**************************************************************************** | |
2184 | REMARKS: | |
2185 | Handles opcode 0x26 | |
2186 | ****************************************************************************/ | |
2187 | static void x86emuOp_segovr_ES(u8 X86EMU_UNUSED(op1)) | |
2188 | { | |
2189 | START_OF_INSTR(); | |
2190 | DECODE_PRINTF("ES:\n"); | |
2191 | TRACE_AND_STEP(); | |
2192 | M.x86.mode |= SYSMODE_SEGOVR_ES; | |
2193 | /* | |
2194 | * note the lack of DECODE_CLEAR_SEGOVR(r) since, here is one of 4 | |
2195 | * opcode subroutines we do not want to do this. | |
2196 | */ | |
2197 | END_OF_INSTR(); | |
2198 | } | |
2199 | ||
2200 | /**************************************************************************** | |
2201 | REMARKS: | |
2202 | Handles opcode 0x27 | |
2203 | ****************************************************************************/ | |
2204 | static void x86emuOp_daa(u8 X86EMU_UNUSED(op1)) | |
2205 | { | |
2206 | START_OF_INSTR(); | |
2207 | DECODE_PRINTF("DAA\n"); | |
2208 | TRACE_AND_STEP(); | |
2209 | M.x86.R_AL = daa_byte(M.x86.R_AL); | |
2210 | DECODE_CLEAR_SEGOVR(); | |
2211 | END_OF_INSTR(); | |
2212 | } | |
2213 | ||
2214 | /**************************************************************************** | |
2215 | REMARKS: | |
2216 | Handles opcode 0x28 | |
2217 | ****************************************************************************/ | |
2218 | static void x86emuOp_sub_byte_RM_R(u8 X86EMU_UNUSED(op1)) | |
2219 | { | |
2220 | int mod, rl, rh; | |
2221 | u8 *destreg, *srcreg; | |
2222 | uint destoffset; | |
2223 | u8 destval; | |
2224 | ||
2225 | START_OF_INSTR(); | |
2226 | DECODE_PRINTF("SUB\t"); | |
2227 | FETCH_DECODE_MODRM(mod, rh, rl); | |
2228 | switch (mod) { | |
2229 | case 0: | |
2230 | destoffset = decode_rm00_address(rl); | |
2231 | DECODE_PRINTF(","); | |
2232 | destval = fetch_data_byte(destoffset); | |
2233 | srcreg = DECODE_RM_BYTE_REGISTER(rh); | |
2234 | DECODE_PRINTF("\n"); | |
2235 | TRACE_AND_STEP(); | |
2236 | destval = sub_byte(destval, *srcreg); | |
2237 | store_data_byte(destoffset, destval); | |
2238 | break; | |
2239 | case 1: | |
2240 | destoffset = decode_rm01_address(rl); | |
2241 | DECODE_PRINTF(","); | |
2242 | destval = fetch_data_byte(destoffset); | |
2243 | srcreg = DECODE_RM_BYTE_REGISTER(rh); | |
2244 | DECODE_PRINTF("\n"); | |
2245 | TRACE_AND_STEP(); | |
2246 | destval = sub_byte(destval, *srcreg); | |
2247 | store_data_byte(destoffset, destval); | |
2248 | break; | |
2249 | case 2: | |
2250 | destoffset = decode_rm10_address(rl); | |
2251 | DECODE_PRINTF(","); | |
2252 | destval = fetch_data_byte(destoffset); | |
2253 | srcreg = DECODE_RM_BYTE_REGISTER(rh); | |
2254 | DECODE_PRINTF("\n"); | |
2255 | TRACE_AND_STEP(); | |
2256 | destval = sub_byte(destval, *srcreg); | |
2257 | store_data_byte(destoffset, destval); | |
2258 | break; | |
2259 | case 3: /* register to register */ | |
2260 | destreg = DECODE_RM_BYTE_REGISTER(rl); | |
2261 | DECODE_PRINTF(","); | |
2262 | srcreg = DECODE_RM_BYTE_REGISTER(rh); | |
2263 | DECODE_PRINTF("\n"); | |
2264 | TRACE_AND_STEP(); | |
2265 | *destreg = sub_byte(*destreg, *srcreg); | |
2266 | break; | |
2267 | } | |
2268 | DECODE_CLEAR_SEGOVR(); | |
2269 | END_OF_INSTR(); | |
2270 | } | |
2271 | ||
2272 | /**************************************************************************** | |
2273 | REMARKS: | |
2274 | Handles opcode 0x29 | |
2275 | ****************************************************************************/ | |
2276 | static void x86emuOp_sub_word_RM_R(u8 X86EMU_UNUSED(op1)) | |
2277 | { | |
2278 | int mod, rl, rh; | |
2279 | uint destoffset; | |
2280 | ||
2281 | START_OF_INSTR(); | |
2282 | DECODE_PRINTF("SUB\t"); | |
2283 | FETCH_DECODE_MODRM(mod, rh, rl); | |
2284 | switch (mod) { | |
2285 | case 0: | |
2286 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
2287 | u32 destval; | |
2288 | u32 *srcreg; | |
2289 | ||
2290 | destoffset = decode_rm00_address(rl); | |
2291 | DECODE_PRINTF(","); | |
2292 | destval = fetch_data_long(destoffset); | |
2293 | srcreg = DECODE_RM_LONG_REGISTER(rh); | |
2294 | DECODE_PRINTF("\n"); | |
2295 | TRACE_AND_STEP(); | |
2296 | destval = sub_long(destval, *srcreg); | |
2297 | store_data_long(destoffset, destval); | |
2298 | } else { | |
2299 | u16 destval; | |
2300 | u16 *srcreg; | |
2301 | ||
2302 | destoffset = decode_rm00_address(rl); | |
2303 | DECODE_PRINTF(","); | |
2304 | destval = fetch_data_word(destoffset); | |
2305 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
2306 | DECODE_PRINTF("\n"); | |
2307 | TRACE_AND_STEP(); | |
2308 | destval = sub_word(destval, *srcreg); | |
2309 | store_data_word(destoffset, destval); | |
2310 | } | |
2311 | break; | |
2312 | case 1: | |
2313 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
2314 | u32 destval; | |
2315 | u32 *srcreg; | |
2316 | ||
2317 | destoffset = decode_rm01_address(rl); | |
2318 | DECODE_PRINTF(","); | |
2319 | destval = fetch_data_long(destoffset); | |
2320 | srcreg = DECODE_RM_LONG_REGISTER(rh); | |
2321 | DECODE_PRINTF("\n"); | |
2322 | TRACE_AND_STEP(); | |
2323 | destval = sub_long(destval, *srcreg); | |
2324 | store_data_long(destoffset, destval); | |
2325 | } else { | |
2326 | u16 destval; | |
2327 | u16 *srcreg; | |
2328 | ||
2329 | destoffset = decode_rm01_address(rl); | |
2330 | DECODE_PRINTF(","); | |
2331 | destval = fetch_data_word(destoffset); | |
2332 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
2333 | DECODE_PRINTF("\n"); | |
2334 | TRACE_AND_STEP(); | |
2335 | destval = sub_word(destval, *srcreg); | |
2336 | store_data_word(destoffset, destval); | |
2337 | } | |
2338 | break; | |
2339 | case 2: | |
2340 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
2341 | u32 destval; | |
2342 | u32 *srcreg; | |
2343 | ||
2344 | destoffset = decode_rm10_address(rl); | |
2345 | DECODE_PRINTF(","); | |
2346 | destval = fetch_data_long(destoffset); | |
2347 | srcreg = DECODE_RM_LONG_REGISTER(rh); | |
2348 | DECODE_PRINTF("\n"); | |
2349 | TRACE_AND_STEP(); | |
2350 | destval = sub_long(destval, *srcreg); | |
2351 | store_data_long(destoffset, destval); | |
2352 | } else { | |
2353 | u16 destval; | |
2354 | u16 *srcreg; | |
2355 | ||
2356 | destoffset = decode_rm10_address(rl); | |
2357 | DECODE_PRINTF(","); | |
2358 | destval = fetch_data_word(destoffset); | |
2359 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
2360 | DECODE_PRINTF("\n"); | |
2361 | TRACE_AND_STEP(); | |
2362 | destval = sub_word(destval, *srcreg); | |
2363 | store_data_word(destoffset, destval); | |
2364 | } | |
2365 | break; | |
2366 | case 3: /* register to register */ | |
2367 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
2368 | u32 *destreg,*srcreg; | |
2369 | ||
2370 | destreg = DECODE_RM_LONG_REGISTER(rl); | |
2371 | DECODE_PRINTF(","); | |
2372 | srcreg = DECODE_RM_LONG_REGISTER(rh); | |
2373 | DECODE_PRINTF("\n"); | |
2374 | TRACE_AND_STEP(); | |
2375 | *destreg = sub_long(*destreg, *srcreg); | |
2376 | } else { | |
2377 | u16 *destreg,*srcreg; | |
2378 | ||
2379 | destreg = DECODE_RM_WORD_REGISTER(rl); | |
2380 | DECODE_PRINTF(","); | |
2381 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
2382 | DECODE_PRINTF("\n"); | |
2383 | TRACE_AND_STEP(); | |
2384 | *destreg = sub_word(*destreg, *srcreg); | |
2385 | } | |
2386 | break; | |
2387 | } | |
2388 | DECODE_CLEAR_SEGOVR(); | |
2389 | END_OF_INSTR(); | |
2390 | } | |
2391 | ||
2392 | /**************************************************************************** | |
2393 | REMARKS: | |
2394 | Handles opcode 0x2a | |
2395 | ****************************************************************************/ | |
2396 | static void x86emuOp_sub_byte_R_RM(u8 X86EMU_UNUSED(op1)) | |
2397 | { | |
2398 | int mod, rl, rh; | |
2399 | u8 *destreg, *srcreg; | |
2400 | uint srcoffset; | |
2401 | u8 srcval; | |
2402 | ||
2403 | START_OF_INSTR(); | |
2404 | DECODE_PRINTF("SUB\t"); | |
2405 | FETCH_DECODE_MODRM(mod, rh, rl); | |
2406 | switch (mod) { | |
2407 | case 0: | |
2408 | destreg = DECODE_RM_BYTE_REGISTER(rh); | |
2409 | DECODE_PRINTF(","); | |
2410 | srcoffset = decode_rm00_address(rl); | |
2411 | srcval = fetch_data_byte(srcoffset); | |
2412 | DECODE_PRINTF("\n"); | |
2413 | TRACE_AND_STEP(); | |
2414 | *destreg = sub_byte(*destreg, srcval); | |
2415 | break; | |
2416 | case 1: | |
2417 | destreg = DECODE_RM_BYTE_REGISTER(rh); | |
2418 | DECODE_PRINTF(","); | |
2419 | srcoffset = decode_rm01_address(rl); | |
2420 | srcval = fetch_data_byte(srcoffset); | |
2421 | DECODE_PRINTF("\n"); | |
2422 | TRACE_AND_STEP(); | |
2423 | *destreg = sub_byte(*destreg, srcval); | |
2424 | break; | |
2425 | case 2: | |
2426 | destreg = DECODE_RM_BYTE_REGISTER(rh); | |
2427 | DECODE_PRINTF(","); | |
2428 | srcoffset = decode_rm10_address(rl); | |
2429 | srcval = fetch_data_byte(srcoffset); | |
2430 | DECODE_PRINTF("\n"); | |
2431 | TRACE_AND_STEP(); | |
2432 | *destreg = sub_byte(*destreg, srcval); | |
2433 | break; | |
2434 | case 3: /* register to register */ | |
2435 | destreg = DECODE_RM_BYTE_REGISTER(rh); | |
2436 | DECODE_PRINTF(","); | |
2437 | srcreg = DECODE_RM_BYTE_REGISTER(rl); | |
2438 | DECODE_PRINTF("\n"); | |
2439 | TRACE_AND_STEP(); | |
2440 | *destreg = sub_byte(*destreg, *srcreg); | |
2441 | break; | |
2442 | } | |
2443 | DECODE_CLEAR_SEGOVR(); | |
2444 | END_OF_INSTR(); | |
2445 | } | |
2446 | ||
2447 | /**************************************************************************** | |
2448 | REMARKS: | |
2449 | Handles opcode 0x2b | |
2450 | ****************************************************************************/ | |
2451 | static void x86emuOp_sub_word_R_RM(u8 X86EMU_UNUSED(op1)) | |
2452 | { | |
2453 | int mod, rl, rh; | |
2454 | uint srcoffset; | |
2455 | ||
2456 | START_OF_INSTR(); | |
2457 | DECODE_PRINTF("SUB\t"); | |
2458 | FETCH_DECODE_MODRM(mod, rh, rl); | |
2459 | switch (mod) { | |
2460 | case 0: | |
2461 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
2462 | u32 *destreg; | |
2463 | u32 srcval; | |
2464 | ||
2465 | destreg = DECODE_RM_LONG_REGISTER(rh); | |
2466 | DECODE_PRINTF(","); | |
2467 | srcoffset = decode_rm00_address(rl); | |
2468 | srcval = fetch_data_long(srcoffset); | |
2469 | DECODE_PRINTF("\n"); | |
2470 | TRACE_AND_STEP(); | |
2471 | *destreg = sub_long(*destreg, srcval); | |
2472 | } else { | |
2473 | u16 *destreg; | |
2474 | u16 srcval; | |
2475 | ||
2476 | destreg = DECODE_RM_WORD_REGISTER(rh); | |
2477 | DECODE_PRINTF(","); | |
2478 | srcoffset = decode_rm00_address(rl); | |
2479 | srcval = fetch_data_word(srcoffset); | |
2480 | DECODE_PRINTF("\n"); | |
2481 | TRACE_AND_STEP(); | |
2482 | *destreg = sub_word(*destreg, srcval); | |
2483 | } | |
2484 | break; | |
2485 | case 1: | |
2486 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
2487 | u32 *destreg; | |
2488 | u32 srcval; | |
2489 | ||
2490 | destreg = DECODE_RM_LONG_REGISTER(rh); | |
2491 | DECODE_PRINTF(","); | |
2492 | srcoffset = decode_rm01_address(rl); | |
2493 | srcval = fetch_data_long(srcoffset); | |
2494 | DECODE_PRINTF("\n"); | |
2495 | TRACE_AND_STEP(); | |
2496 | *destreg = sub_long(*destreg, srcval); | |
2497 | } else { | |
2498 | u16 *destreg; | |
2499 | u16 srcval; | |
2500 | ||
2501 | destreg = DECODE_RM_WORD_REGISTER(rh); | |
2502 | DECODE_PRINTF(","); | |
2503 | srcoffset = decode_rm01_address(rl); | |
2504 | srcval = fetch_data_word(srcoffset); | |
2505 | DECODE_PRINTF("\n"); | |
2506 | TRACE_AND_STEP(); | |
2507 | *destreg = sub_word(*destreg, srcval); | |
2508 | } | |
2509 | break; | |
2510 | case 2: | |
2511 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
2512 | u32 *destreg; | |
2513 | u32 srcval; | |
2514 | ||
2515 | destreg = DECODE_RM_LONG_REGISTER(rh); | |
2516 | DECODE_PRINTF(","); | |
2517 | srcoffset = decode_rm10_address(rl); | |
2518 | srcval = fetch_data_long(srcoffset); | |
2519 | DECODE_PRINTF("\n"); | |
2520 | TRACE_AND_STEP(); | |
2521 | *destreg = sub_long(*destreg, srcval); | |
2522 | } else { | |
2523 | u16 *destreg; | |
2524 | u16 srcval; | |
2525 | ||
2526 | destreg = DECODE_RM_WORD_REGISTER(rh); | |
2527 | DECODE_PRINTF(","); | |
2528 | srcoffset = decode_rm10_address(rl); | |
2529 | srcval = fetch_data_word(srcoffset); | |
2530 | DECODE_PRINTF("\n"); | |
2531 | TRACE_AND_STEP(); | |
2532 | *destreg = sub_word(*destreg, srcval); | |
2533 | } | |
2534 | break; | |
2535 | case 3: /* register to register */ | |
2536 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
2537 | u32 *destreg,*srcreg; | |
2538 | ||
2539 | destreg = DECODE_RM_LONG_REGISTER(rh); | |
2540 | DECODE_PRINTF(","); | |
2541 | srcreg = DECODE_RM_LONG_REGISTER(rl); | |
2542 | DECODE_PRINTF("\n"); | |
2543 | TRACE_AND_STEP(); | |
2544 | *destreg = sub_long(*destreg, *srcreg); | |
2545 | } else { | |
2546 | u16 *destreg,*srcreg; | |
2547 | ||
2548 | destreg = DECODE_RM_WORD_REGISTER(rh); | |
2549 | DECODE_PRINTF(","); | |
2550 | srcreg = DECODE_RM_WORD_REGISTER(rl); | |
2551 | DECODE_PRINTF("\n"); | |
2552 | TRACE_AND_STEP(); | |
2553 | *destreg = sub_word(*destreg, *srcreg); | |
2554 | } | |
2555 | break; | |
2556 | } | |
2557 | DECODE_CLEAR_SEGOVR(); | |
2558 | END_OF_INSTR(); | |
2559 | } | |
2560 | ||
2561 | /**************************************************************************** | |
2562 | REMARKS: | |
2563 | Handles opcode 0x2c | |
2564 | ****************************************************************************/ | |
2565 | static void x86emuOp_sub_byte_AL_IMM(u8 X86EMU_UNUSED(op1)) | |
2566 | { | |
2567 | u8 srcval; | |
2568 | ||
2569 | START_OF_INSTR(); | |
2570 | DECODE_PRINTF("SUB\tAL,"); | |
2571 | srcval = fetch_byte_imm(); | |
2572 | DECODE_PRINTF2("%x\n", srcval); | |
2573 | TRACE_AND_STEP(); | |
2574 | M.x86.R_AL = sub_byte(M.x86.R_AL, srcval); | |
2575 | DECODE_CLEAR_SEGOVR(); | |
2576 | END_OF_INSTR(); | |
2577 | } | |
2578 | ||
2579 | /**************************************************************************** | |
2580 | REMARKS: | |
2581 | Handles opcode 0x2d | |
2582 | ****************************************************************************/ | |
2583 | static void x86emuOp_sub_word_AX_IMM(u8 X86EMU_UNUSED(op1)) | |
2584 | { | |
2585 | u32 srcval; | |
2586 | ||
2587 | START_OF_INSTR(); | |
2588 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
2589 | DECODE_PRINTF("SUB\tEAX,"); | |
2590 | srcval = fetch_long_imm(); | |
2591 | } else { | |
2592 | DECODE_PRINTF("SUB\tAX,"); | |
2593 | srcval = fetch_word_imm(); | |
2594 | } | |
2595 | DECODE_PRINTF2("%x\n", srcval); | |
2596 | TRACE_AND_STEP(); | |
2597 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
2598 | M.x86.R_EAX = sub_long(M.x86.R_EAX, srcval); | |
2599 | } else { | |
2600 | M.x86.R_AX = sub_word(M.x86.R_AX, (u16)srcval); | |
2601 | } | |
2602 | DECODE_CLEAR_SEGOVR(); | |
2603 | END_OF_INSTR(); | |
2604 | } | |
2605 | ||
2606 | /**************************************************************************** | |
2607 | REMARKS: | |
2608 | Handles opcode 0x2e | |
2609 | ****************************************************************************/ | |
2610 | static void x86emuOp_segovr_CS(u8 X86EMU_UNUSED(op1)) | |
2611 | { | |
2612 | START_OF_INSTR(); | |
2613 | DECODE_PRINTF("CS:\n"); | |
2614 | TRACE_AND_STEP(); | |
2615 | M.x86.mode |= SYSMODE_SEGOVR_CS; | |
2616 | /* note no DECODE_CLEAR_SEGOVR here. */ | |
2617 | END_OF_INSTR(); | |
2618 | } | |
2619 | ||
2620 | /**************************************************************************** | |
2621 | REMARKS: | |
2622 | Handles opcode 0x2f | |
2623 | ****************************************************************************/ | |
2624 | static void x86emuOp_das(u8 X86EMU_UNUSED(op1)) | |
2625 | { | |
2626 | START_OF_INSTR(); | |
2627 | DECODE_PRINTF("DAS\n"); | |
2628 | TRACE_AND_STEP(); | |
2629 | M.x86.R_AL = das_byte(M.x86.R_AL); | |
2630 | DECODE_CLEAR_SEGOVR(); | |
2631 | END_OF_INSTR(); | |
2632 | } | |
2633 | ||
2634 | /**************************************************************************** | |
2635 | REMARKS: | |
2636 | Handles opcode 0x30 | |
2637 | ****************************************************************************/ | |
2638 | static void x86emuOp_xor_byte_RM_R(u8 X86EMU_UNUSED(op1)) | |
2639 | { | |
2640 | int mod, rl, rh; | |
2641 | u8 *destreg, *srcreg; | |
2642 | uint destoffset; | |
2643 | u8 destval; | |
2644 | ||
2645 | START_OF_INSTR(); | |
2646 | DECODE_PRINTF("XOR\t"); | |
2647 | FETCH_DECODE_MODRM(mod, rh, rl); | |
2648 | switch (mod) { | |
2649 | case 0: | |
2650 | destoffset = decode_rm00_address(rl); | |
2651 | DECODE_PRINTF(","); | |
2652 | destval = fetch_data_byte(destoffset); | |
2653 | srcreg = DECODE_RM_BYTE_REGISTER(rh); | |
2654 | DECODE_PRINTF("\n"); | |
2655 | TRACE_AND_STEP(); | |
2656 | destval = xor_byte(destval, *srcreg); | |
2657 | store_data_byte(destoffset, destval); | |
2658 | break; | |
2659 | case 1: | |
2660 | destoffset = decode_rm01_address(rl); | |
2661 | DECODE_PRINTF(","); | |
2662 | destval = fetch_data_byte(destoffset); | |
2663 | srcreg = DECODE_RM_BYTE_REGISTER(rh); | |
2664 | DECODE_PRINTF("\n"); | |
2665 | TRACE_AND_STEP(); | |
2666 | destval = xor_byte(destval, *srcreg); | |
2667 | store_data_byte(destoffset, destval); | |
2668 | break; | |
2669 | case 2: | |
2670 | destoffset = decode_rm10_address(rl); | |
2671 | DECODE_PRINTF(","); | |
2672 | destval = fetch_data_byte(destoffset); | |
2673 | srcreg = DECODE_RM_BYTE_REGISTER(rh); | |
2674 | DECODE_PRINTF("\n"); | |
2675 | TRACE_AND_STEP(); | |
2676 | destval = xor_byte(destval, *srcreg); | |
2677 | store_data_byte(destoffset, destval); | |
2678 | break; | |
2679 | case 3: /* register to register */ | |
2680 | destreg = DECODE_RM_BYTE_REGISTER(rl); | |
2681 | DECODE_PRINTF(","); | |
2682 | srcreg = DECODE_RM_BYTE_REGISTER(rh); | |
2683 | DECODE_PRINTF("\n"); | |
2684 | TRACE_AND_STEP(); | |
2685 | *destreg = xor_byte(*destreg, *srcreg); | |
2686 | break; | |
2687 | } | |
2688 | DECODE_CLEAR_SEGOVR(); | |
2689 | END_OF_INSTR(); | |
2690 | } | |
2691 | ||
2692 | /**************************************************************************** | |
2693 | REMARKS: | |
2694 | Handles opcode 0x31 | |
2695 | ****************************************************************************/ | |
2696 | static void x86emuOp_xor_word_RM_R(u8 X86EMU_UNUSED(op1)) | |
2697 | { | |
2698 | int mod, rl, rh; | |
2699 | uint destoffset; | |
2700 | ||
2701 | START_OF_INSTR(); | |
2702 | DECODE_PRINTF("XOR\t"); | |
2703 | FETCH_DECODE_MODRM(mod, rh, rl); | |
2704 | switch (mod) { | |
2705 | case 0: | |
2706 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
2707 | u32 destval; | |
2708 | u32 *srcreg; | |
2709 | ||
2710 | destoffset = decode_rm00_address(rl); | |
2711 | DECODE_PRINTF(","); | |
2712 | destval = fetch_data_long(destoffset); | |
2713 | srcreg = DECODE_RM_LONG_REGISTER(rh); | |
2714 | DECODE_PRINTF("\n"); | |
2715 | TRACE_AND_STEP(); | |
2716 | destval = xor_long(destval, *srcreg); | |
2717 | store_data_long(destoffset, destval); | |
2718 | } else { | |
2719 | u16 destval; | |
2720 | u16 *srcreg; | |
2721 | ||
2722 | destoffset = decode_rm00_address(rl); | |
2723 | DECODE_PRINTF(","); | |
2724 | destval = fetch_data_word(destoffset); | |
2725 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
2726 | DECODE_PRINTF("\n"); | |
2727 | TRACE_AND_STEP(); | |
2728 | destval = xor_word(destval, *srcreg); | |
2729 | store_data_word(destoffset, destval); | |
2730 | } | |
2731 | break; | |
2732 | case 1: | |
2733 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
2734 | u32 destval; | |
2735 | u32 *srcreg; | |
2736 | ||
2737 | destoffset = decode_rm01_address(rl); | |
2738 | DECODE_PRINTF(","); | |
2739 | destval = fetch_data_long(destoffset); | |
2740 | srcreg = DECODE_RM_LONG_REGISTER(rh); | |
2741 | DECODE_PRINTF("\n"); | |
2742 | TRACE_AND_STEP(); | |
2743 | destval = xor_long(destval, *srcreg); | |
2744 | store_data_long(destoffset, destval); | |
2745 | } else { | |
2746 | u16 destval; | |
2747 | u16 *srcreg; | |
2748 | ||
2749 | destoffset = decode_rm01_address(rl); | |
2750 | DECODE_PRINTF(","); | |
2751 | destval = fetch_data_word(destoffset); | |
2752 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
2753 | DECODE_PRINTF("\n"); | |
2754 | TRACE_AND_STEP(); | |
2755 | destval = xor_word(destval, *srcreg); | |
2756 | store_data_word(destoffset, destval); | |
2757 | } | |
2758 | break; | |
2759 | case 2: | |
2760 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
2761 | u32 destval; | |
2762 | u32 *srcreg; | |
2763 | ||
2764 | destoffset = decode_rm10_address(rl); | |
2765 | DECODE_PRINTF(","); | |
2766 | destval = fetch_data_long(destoffset); | |
2767 | srcreg = DECODE_RM_LONG_REGISTER(rh); | |
2768 | DECODE_PRINTF("\n"); | |
2769 | TRACE_AND_STEP(); | |
2770 | destval = xor_long(destval, *srcreg); | |
2771 | store_data_long(destoffset, destval); | |
2772 | } else { | |
2773 | u16 destval; | |
2774 | u16 *srcreg; | |
2775 | ||
2776 | destoffset = decode_rm10_address(rl); | |
2777 | DECODE_PRINTF(","); | |
2778 | destval = fetch_data_word(destoffset); | |
2779 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
2780 | DECODE_PRINTF("\n"); | |
2781 | TRACE_AND_STEP(); | |
2782 | destval = xor_word(destval, *srcreg); | |
2783 | store_data_word(destoffset, destval); | |
2784 | } | |
2785 | break; | |
2786 | case 3: /* register to register */ | |
2787 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
2788 | u32 *destreg,*srcreg; | |
2789 | ||
2790 | destreg = DECODE_RM_LONG_REGISTER(rl); | |
2791 | DECODE_PRINTF(","); | |
2792 | srcreg = DECODE_RM_LONG_REGISTER(rh); | |
2793 | DECODE_PRINTF("\n"); | |
2794 | TRACE_AND_STEP(); | |
2795 | *destreg = xor_long(*destreg, *srcreg); | |
2796 | } else { | |
2797 | u16 *destreg,*srcreg; | |
2798 | ||
2799 | destreg = DECODE_RM_WORD_REGISTER(rl); | |
2800 | DECODE_PRINTF(","); | |
2801 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
2802 | DECODE_PRINTF("\n"); | |
2803 | TRACE_AND_STEP(); | |
2804 | *destreg = xor_word(*destreg, *srcreg); | |
2805 | } | |
2806 | break; | |
2807 | } | |
2808 | DECODE_CLEAR_SEGOVR(); | |
2809 | END_OF_INSTR(); | |
2810 | } | |
2811 | ||
2812 | /**************************************************************************** | |
2813 | REMARKS: | |
2814 | Handles opcode 0x32 | |
2815 | ****************************************************************************/ | |
2816 | static void x86emuOp_xor_byte_R_RM(u8 X86EMU_UNUSED(op1)) | |
2817 | { | |
2818 | int mod, rl, rh; | |
2819 | u8 *destreg, *srcreg; | |
2820 | uint srcoffset; | |
2821 | u8 srcval; | |
2822 | ||
2823 | START_OF_INSTR(); | |
2824 | DECODE_PRINTF("XOR\t"); | |
2825 | FETCH_DECODE_MODRM(mod, rh, rl); | |
2826 | switch (mod) { | |
2827 | case 0: | |
2828 | destreg = DECODE_RM_BYTE_REGISTER(rh); | |
2829 | DECODE_PRINTF(","); | |
2830 | srcoffset = decode_rm00_address(rl); | |
2831 | srcval = fetch_data_byte(srcoffset); | |
2832 | DECODE_PRINTF("\n"); | |
2833 | TRACE_AND_STEP(); | |
2834 | *destreg = xor_byte(*destreg, srcval); | |
2835 | break; | |
2836 | case 1: | |
2837 | destreg = DECODE_RM_BYTE_REGISTER(rh); | |
2838 | DECODE_PRINTF(","); | |
2839 | srcoffset = decode_rm01_address(rl); | |
2840 | srcval = fetch_data_byte(srcoffset); | |
2841 | DECODE_PRINTF("\n"); | |
2842 | TRACE_AND_STEP(); | |
2843 | *destreg = xor_byte(*destreg, srcval); | |
2844 | break; | |
2845 | case 2: | |
2846 | destreg = DECODE_RM_BYTE_REGISTER(rh); | |
2847 | DECODE_PRINTF(","); | |
2848 | srcoffset = decode_rm10_address(rl); | |
2849 | srcval = fetch_data_byte(srcoffset); | |
2850 | DECODE_PRINTF("\n"); | |
2851 | TRACE_AND_STEP(); | |
2852 | *destreg = xor_byte(*destreg, srcval); | |
2853 | break; | |
2854 | case 3: /* register to register */ | |
2855 | destreg = DECODE_RM_BYTE_REGISTER(rh); | |
2856 | DECODE_PRINTF(","); | |
2857 | srcreg = DECODE_RM_BYTE_REGISTER(rl); | |
2858 | DECODE_PRINTF("\n"); | |
2859 | TRACE_AND_STEP(); | |
2860 | *destreg = xor_byte(*destreg, *srcreg); | |
2861 | break; | |
2862 | } | |
2863 | DECODE_CLEAR_SEGOVR(); | |
2864 | END_OF_INSTR(); | |
2865 | } | |
2866 | ||
2867 | /**************************************************************************** | |
2868 | REMARKS: | |
2869 | Handles opcode 0x33 | |
2870 | ****************************************************************************/ | |
2871 | static void x86emuOp_xor_word_R_RM(u8 X86EMU_UNUSED(op1)) | |
2872 | { | |
2873 | int mod, rl, rh; | |
2874 | uint srcoffset; | |
2875 | ||
2876 | START_OF_INSTR(); | |
2877 | DECODE_PRINTF("XOR\t"); | |
2878 | FETCH_DECODE_MODRM(mod, rh, rl); | |
2879 | switch (mod) { | |
2880 | case 0: | |
2881 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
2882 | u32 *destreg; | |
2883 | u32 srcval; | |
2884 | ||
2885 | destreg = DECODE_RM_LONG_REGISTER(rh); | |
2886 | DECODE_PRINTF(","); | |
2887 | srcoffset = decode_rm00_address(rl); | |
2888 | srcval = fetch_data_long(srcoffset); | |
2889 | DECODE_PRINTF("\n"); | |
2890 | TRACE_AND_STEP(); | |
2891 | *destreg = xor_long(*destreg, srcval); | |
2892 | } else { | |
2893 | u16 *destreg; | |
2894 | u16 srcval; | |
2895 | ||
2896 | destreg = DECODE_RM_WORD_REGISTER(rh); | |
2897 | DECODE_PRINTF(","); | |
2898 | srcoffset = decode_rm00_address(rl); | |
2899 | srcval = fetch_data_word(srcoffset); | |
2900 | DECODE_PRINTF("\n"); | |
2901 | TRACE_AND_STEP(); | |
2902 | *destreg = xor_word(*destreg, srcval); | |
2903 | } | |
2904 | break; | |
2905 | case 1: | |
2906 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
2907 | u32 *destreg; | |
2908 | u32 srcval; | |
2909 | ||
2910 | destreg = DECODE_RM_LONG_REGISTER(rh); | |
2911 | DECODE_PRINTF(","); | |
2912 | srcoffset = decode_rm01_address(rl); | |
2913 | srcval = fetch_data_long(srcoffset); | |
2914 | DECODE_PRINTF("\n"); | |
2915 | TRACE_AND_STEP(); | |
2916 | *destreg = xor_long(*destreg, srcval); | |
2917 | } else { | |
2918 | u16 *destreg; | |
2919 | u16 srcval; | |
2920 | ||
2921 | destreg = DECODE_RM_WORD_REGISTER(rh); | |
2922 | DECODE_PRINTF(","); | |
2923 | srcoffset = decode_rm01_address(rl); | |
2924 | srcval = fetch_data_word(srcoffset); | |
2925 | DECODE_PRINTF("\n"); | |
2926 | TRACE_AND_STEP(); | |
2927 | *destreg = xor_word(*destreg, srcval); | |
2928 | } | |
2929 | break; | |
2930 | case 2: | |
2931 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
2932 | u32 *destreg; | |
2933 | u32 srcval; | |
2934 | ||
2935 | destreg = DECODE_RM_LONG_REGISTER(rh); | |
2936 | DECODE_PRINTF(","); | |
2937 | srcoffset = decode_rm10_address(rl); | |
2938 | srcval = fetch_data_long(srcoffset); | |
2939 | DECODE_PRINTF("\n"); | |
2940 | TRACE_AND_STEP(); | |
2941 | *destreg = xor_long(*destreg, srcval); | |
2942 | } else { | |
2943 | u16 *destreg; | |
2944 | u16 srcval; | |
2945 | ||
2946 | destreg = DECODE_RM_WORD_REGISTER(rh); | |
2947 | DECODE_PRINTF(","); | |
2948 | srcoffset = decode_rm10_address(rl); | |
2949 | srcval = fetch_data_word(srcoffset); | |
2950 | DECODE_PRINTF("\n"); | |
2951 | TRACE_AND_STEP(); | |
2952 | *destreg = xor_word(*destreg, srcval); | |
2953 | } | |
2954 | break; | |
2955 | case 3: /* register to register */ | |
2956 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
2957 | u32 *destreg,*srcreg; | |
2958 | ||
2959 | destreg = DECODE_RM_LONG_REGISTER(rh); | |
2960 | DECODE_PRINTF(","); | |
2961 | srcreg = DECODE_RM_LONG_REGISTER(rl); | |
2962 | DECODE_PRINTF("\n"); | |
2963 | TRACE_AND_STEP(); | |
2964 | *destreg = xor_long(*destreg, *srcreg); | |
2965 | } else { | |
2966 | u16 *destreg,*srcreg; | |
2967 | ||
2968 | destreg = DECODE_RM_WORD_REGISTER(rh); | |
2969 | DECODE_PRINTF(","); | |
2970 | srcreg = DECODE_RM_WORD_REGISTER(rl); | |
2971 | DECODE_PRINTF("\n"); | |
2972 | TRACE_AND_STEP(); | |
2973 | *destreg = xor_word(*destreg, *srcreg); | |
2974 | } | |
2975 | break; | |
2976 | } | |
2977 | DECODE_CLEAR_SEGOVR(); | |
2978 | END_OF_INSTR(); | |
2979 | } | |
2980 | ||
2981 | /**************************************************************************** | |
2982 | REMARKS: | |
2983 | Handles opcode 0x34 | |
2984 | ****************************************************************************/ | |
2985 | static void x86emuOp_xor_byte_AL_IMM(u8 X86EMU_UNUSED(op1)) | |
2986 | { | |
2987 | u8 srcval; | |
2988 | ||
2989 | START_OF_INSTR(); | |
2990 | DECODE_PRINTF("XOR\tAL,"); | |
2991 | srcval = fetch_byte_imm(); | |
2992 | DECODE_PRINTF2("%x\n", srcval); | |
2993 | TRACE_AND_STEP(); | |
2994 | M.x86.R_AL = xor_byte(M.x86.R_AL, srcval); | |
2995 | DECODE_CLEAR_SEGOVR(); | |
2996 | END_OF_INSTR(); | |
2997 | } | |
2998 | ||
2999 | /**************************************************************************** | |
3000 | REMARKS: | |
3001 | Handles opcode 0x35 | |
3002 | ****************************************************************************/ | |
3003 | static void x86emuOp_xor_word_AX_IMM(u8 X86EMU_UNUSED(op1)) | |
3004 | { | |
3005 | u32 srcval; | |
3006 | ||
3007 | START_OF_INSTR(); | |
3008 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3009 | DECODE_PRINTF("XOR\tEAX,"); | |
3010 | srcval = fetch_long_imm(); | |
3011 | } else { | |
3012 | DECODE_PRINTF("XOR\tAX,"); | |
3013 | srcval = fetch_word_imm(); | |
3014 | } | |
3015 | DECODE_PRINTF2("%x\n", srcval); | |
3016 | TRACE_AND_STEP(); | |
3017 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3018 | M.x86.R_EAX = xor_long(M.x86.R_EAX, srcval); | |
3019 | } else { | |
3020 | M.x86.R_AX = xor_word(M.x86.R_AX, (u16)srcval); | |
3021 | } | |
3022 | DECODE_CLEAR_SEGOVR(); | |
3023 | END_OF_INSTR(); | |
3024 | } | |
3025 | ||
3026 | /**************************************************************************** | |
3027 | REMARKS: | |
3028 | Handles opcode 0x36 | |
3029 | ****************************************************************************/ | |
3030 | static void x86emuOp_segovr_SS(u8 X86EMU_UNUSED(op1)) | |
3031 | { | |
3032 | START_OF_INSTR(); | |
3033 | DECODE_PRINTF("SS:\n"); | |
3034 | TRACE_AND_STEP(); | |
3035 | M.x86.mode |= SYSMODE_SEGOVR_SS; | |
3036 | /* no DECODE_CLEAR_SEGOVR ! */ | |
3037 | END_OF_INSTR(); | |
3038 | } | |
3039 | ||
3040 | /**************************************************************************** | |
3041 | REMARKS: | |
3042 | Handles opcode 0x37 | |
3043 | ****************************************************************************/ | |
3044 | static void x86emuOp_aaa(u8 X86EMU_UNUSED(op1)) | |
3045 | { | |
3046 | START_OF_INSTR(); | |
3047 | DECODE_PRINTF("AAA\n"); | |
3048 | TRACE_AND_STEP(); | |
3049 | M.x86.R_AX = aaa_word(M.x86.R_AX); | |
3050 | DECODE_CLEAR_SEGOVR(); | |
3051 | END_OF_INSTR(); | |
3052 | } | |
3053 | ||
3054 | /**************************************************************************** | |
3055 | REMARKS: | |
3056 | Handles opcode 0x38 | |
3057 | ****************************************************************************/ | |
3058 | static void x86emuOp_cmp_byte_RM_R(u8 X86EMU_UNUSED(op1)) | |
3059 | { | |
3060 | int mod, rl, rh; | |
3061 | uint destoffset; | |
3062 | u8 *destreg, *srcreg; | |
3063 | u8 destval; | |
3064 | ||
3065 | START_OF_INSTR(); | |
3066 | DECODE_PRINTF("CMP\t"); | |
3067 | FETCH_DECODE_MODRM(mod, rh, rl); | |
3068 | switch (mod) { | |
3069 | case 0: | |
3070 | destoffset = decode_rm00_address(rl); | |
3071 | DECODE_PRINTF(","); | |
3072 | destval = fetch_data_byte(destoffset); | |
3073 | srcreg = DECODE_RM_BYTE_REGISTER(rh); | |
3074 | DECODE_PRINTF("\n"); | |
3075 | TRACE_AND_STEP(); | |
3076 | cmp_byte(destval, *srcreg); | |
3077 | break; | |
3078 | case 1: | |
3079 | destoffset = decode_rm01_address(rl); | |
3080 | DECODE_PRINTF(","); | |
3081 | destval = fetch_data_byte(destoffset); | |
3082 | srcreg = DECODE_RM_BYTE_REGISTER(rh); | |
3083 | DECODE_PRINTF("\n"); | |
3084 | TRACE_AND_STEP(); | |
3085 | cmp_byte(destval, *srcreg); | |
3086 | break; | |
3087 | case 2: | |
3088 | destoffset = decode_rm10_address(rl); | |
3089 | DECODE_PRINTF(","); | |
3090 | destval = fetch_data_byte(destoffset); | |
3091 | srcreg = DECODE_RM_BYTE_REGISTER(rh); | |
3092 | DECODE_PRINTF("\n"); | |
3093 | TRACE_AND_STEP(); | |
3094 | cmp_byte(destval, *srcreg); | |
3095 | break; | |
3096 | case 3: /* register to register */ | |
3097 | destreg = DECODE_RM_BYTE_REGISTER(rl); | |
3098 | DECODE_PRINTF(","); | |
3099 | srcreg = DECODE_RM_BYTE_REGISTER(rh); | |
3100 | DECODE_PRINTF("\n"); | |
3101 | TRACE_AND_STEP(); | |
3102 | cmp_byte(*destreg, *srcreg); | |
3103 | break; | |
3104 | } | |
3105 | DECODE_CLEAR_SEGOVR(); | |
3106 | END_OF_INSTR(); | |
3107 | } | |
3108 | ||
3109 | /**************************************************************************** | |
3110 | REMARKS: | |
3111 | Handles opcode 0x39 | |
3112 | ****************************************************************************/ | |
3113 | static void x86emuOp_cmp_word_RM_R(u8 X86EMU_UNUSED(op1)) | |
3114 | { | |
3115 | int mod, rl, rh; | |
3116 | uint destoffset; | |
3117 | ||
3118 | START_OF_INSTR(); | |
3119 | DECODE_PRINTF("CMP\t"); | |
3120 | FETCH_DECODE_MODRM(mod, rh, rl); | |
3121 | switch (mod) { | |
3122 | case 0: | |
3123 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3124 | u32 destval; | |
3125 | u32 *srcreg; | |
3126 | ||
3127 | destoffset = decode_rm00_address(rl); | |
3128 | DECODE_PRINTF(","); | |
3129 | destval = fetch_data_long(destoffset); | |
3130 | srcreg = DECODE_RM_LONG_REGISTER(rh); | |
3131 | DECODE_PRINTF("\n"); | |
3132 | TRACE_AND_STEP(); | |
3133 | cmp_long(destval, *srcreg); | |
3134 | } else { | |
3135 | u16 destval; | |
3136 | u16 *srcreg; | |
3137 | ||
3138 | destoffset = decode_rm00_address(rl); | |
3139 | DECODE_PRINTF(","); | |
3140 | destval = fetch_data_word(destoffset); | |
3141 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
3142 | DECODE_PRINTF("\n"); | |
3143 | TRACE_AND_STEP(); | |
3144 | cmp_word(destval, *srcreg); | |
3145 | } | |
3146 | break; | |
3147 | case 1: | |
3148 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3149 | u32 destval; | |
3150 | u32 *srcreg; | |
3151 | ||
3152 | destoffset = decode_rm01_address(rl); | |
3153 | DECODE_PRINTF(","); | |
3154 | destval = fetch_data_long(destoffset); | |
3155 | srcreg = DECODE_RM_LONG_REGISTER(rh); | |
3156 | DECODE_PRINTF("\n"); | |
3157 | TRACE_AND_STEP(); | |
3158 | cmp_long(destval, *srcreg); | |
3159 | } else { | |
3160 | u16 destval; | |
3161 | u16 *srcreg; | |
3162 | ||
3163 | destoffset = decode_rm01_address(rl); | |
3164 | DECODE_PRINTF(","); | |
3165 | destval = fetch_data_word(destoffset); | |
3166 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
3167 | DECODE_PRINTF("\n"); | |
3168 | TRACE_AND_STEP(); | |
3169 | cmp_word(destval, *srcreg); | |
3170 | } | |
3171 | break; | |
3172 | case 2: | |
3173 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3174 | u32 destval; | |
3175 | u32 *srcreg; | |
3176 | ||
3177 | destoffset = decode_rm10_address(rl); | |
3178 | DECODE_PRINTF(","); | |
3179 | destval = fetch_data_long(destoffset); | |
3180 | srcreg = DECODE_RM_LONG_REGISTER(rh); | |
3181 | DECODE_PRINTF("\n"); | |
3182 | TRACE_AND_STEP(); | |
3183 | cmp_long(destval, *srcreg); | |
3184 | } else { | |
3185 | u16 destval; | |
3186 | u16 *srcreg; | |
3187 | ||
3188 | destoffset = decode_rm10_address(rl); | |
3189 | DECODE_PRINTF(","); | |
3190 | destval = fetch_data_word(destoffset); | |
3191 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
3192 | DECODE_PRINTF("\n"); | |
3193 | TRACE_AND_STEP(); | |
3194 | cmp_word(destval, *srcreg); | |
3195 | } | |
3196 | break; | |
3197 | case 3: /* register to register */ | |
3198 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3199 | u32 *destreg,*srcreg; | |
3200 | ||
3201 | destreg = DECODE_RM_LONG_REGISTER(rl); | |
3202 | DECODE_PRINTF(","); | |
3203 | srcreg = DECODE_RM_LONG_REGISTER(rh); | |
3204 | DECODE_PRINTF("\n"); | |
3205 | TRACE_AND_STEP(); | |
3206 | cmp_long(*destreg, *srcreg); | |
3207 | } else { | |
3208 | u16 *destreg,*srcreg; | |
3209 | ||
3210 | destreg = DECODE_RM_WORD_REGISTER(rl); | |
3211 | DECODE_PRINTF(","); | |
3212 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
3213 | DECODE_PRINTF("\n"); | |
3214 | TRACE_AND_STEP(); | |
3215 | cmp_word(*destreg, *srcreg); | |
3216 | } | |
3217 | break; | |
3218 | } | |
3219 | DECODE_CLEAR_SEGOVR(); | |
3220 | END_OF_INSTR(); | |
3221 | } | |
3222 | ||
3223 | /**************************************************************************** | |
3224 | REMARKS: | |
3225 | Handles opcode 0x3a | |
3226 | ****************************************************************************/ | |
3227 | static void x86emuOp_cmp_byte_R_RM(u8 X86EMU_UNUSED(op1)) | |
3228 | { | |
3229 | int mod, rl, rh; | |
3230 | u8 *destreg, *srcreg; | |
3231 | uint srcoffset; | |
3232 | u8 srcval; | |
3233 | ||
3234 | START_OF_INSTR(); | |
3235 | DECODE_PRINTF("CMP\t"); | |
3236 | FETCH_DECODE_MODRM(mod, rh, rl); | |
3237 | switch (mod) { | |
3238 | case 0: | |
3239 | destreg = DECODE_RM_BYTE_REGISTER(rh); | |
3240 | DECODE_PRINTF(","); | |
3241 | srcoffset = decode_rm00_address(rl); | |
3242 | srcval = fetch_data_byte(srcoffset); | |
3243 | DECODE_PRINTF("\n"); | |
3244 | TRACE_AND_STEP(); | |
3245 | cmp_byte(*destreg, srcval); | |
3246 | break; | |
3247 | case 1: | |
3248 | destreg = DECODE_RM_BYTE_REGISTER(rh); | |
3249 | DECODE_PRINTF(","); | |
3250 | srcoffset = decode_rm01_address(rl); | |
3251 | srcval = fetch_data_byte(srcoffset); | |
3252 | DECODE_PRINTF("\n"); | |
3253 | TRACE_AND_STEP(); | |
3254 | cmp_byte(*destreg, srcval); | |
3255 | break; | |
3256 | case 2: | |
3257 | destreg = DECODE_RM_BYTE_REGISTER(rh); | |
3258 | DECODE_PRINTF(","); | |
3259 | srcoffset = decode_rm10_address(rl); | |
3260 | srcval = fetch_data_byte(srcoffset); | |
3261 | DECODE_PRINTF("\n"); | |
3262 | TRACE_AND_STEP(); | |
3263 | cmp_byte(*destreg, srcval); | |
3264 | break; | |
3265 | case 3: /* register to register */ | |
3266 | destreg = DECODE_RM_BYTE_REGISTER(rh); | |
3267 | DECODE_PRINTF(","); | |
3268 | srcreg = DECODE_RM_BYTE_REGISTER(rl); | |
3269 | DECODE_PRINTF("\n"); | |
3270 | TRACE_AND_STEP(); | |
3271 | cmp_byte(*destreg, *srcreg); | |
3272 | break; | |
3273 | } | |
3274 | DECODE_CLEAR_SEGOVR(); | |
3275 | END_OF_INSTR(); | |
3276 | } | |
3277 | ||
3278 | /**************************************************************************** | |
3279 | REMARKS: | |
3280 | Handles opcode 0x3b | |
3281 | ****************************************************************************/ | |
3282 | static void x86emuOp_cmp_word_R_RM(u8 X86EMU_UNUSED(op1)) | |
3283 | { | |
3284 | int mod, rl, rh; | |
3285 | uint srcoffset; | |
3286 | ||
3287 | START_OF_INSTR(); | |
3288 | DECODE_PRINTF("CMP\t"); | |
3289 | FETCH_DECODE_MODRM(mod, rh, rl); | |
3290 | switch (mod) { | |
3291 | case 0: | |
3292 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3293 | u32 *destreg; | |
3294 | u32 srcval; | |
3295 | ||
3296 | destreg = DECODE_RM_LONG_REGISTER(rh); | |
3297 | DECODE_PRINTF(","); | |
3298 | srcoffset = decode_rm00_address(rl); | |
3299 | srcval = fetch_data_long(srcoffset); | |
3300 | DECODE_PRINTF("\n"); | |
3301 | TRACE_AND_STEP(); | |
3302 | cmp_long(*destreg, srcval); | |
3303 | } else { | |
3304 | u16 *destreg; | |
3305 | u16 srcval; | |
3306 | ||
3307 | destreg = DECODE_RM_WORD_REGISTER(rh); | |
3308 | DECODE_PRINTF(","); | |
3309 | srcoffset = decode_rm00_address(rl); | |
3310 | srcval = fetch_data_word(srcoffset); | |
3311 | DECODE_PRINTF("\n"); | |
3312 | TRACE_AND_STEP(); | |
3313 | cmp_word(*destreg, srcval); | |
3314 | } | |
3315 | break; | |
3316 | case 1: | |
3317 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3318 | u32 *destreg; | |
3319 | u32 srcval; | |
3320 | ||
3321 | destreg = DECODE_RM_LONG_REGISTER(rh); | |
3322 | DECODE_PRINTF(","); | |
3323 | srcoffset = decode_rm01_address(rl); | |
3324 | srcval = fetch_data_long(srcoffset); | |
3325 | DECODE_PRINTF("\n"); | |
3326 | TRACE_AND_STEP(); | |
3327 | cmp_long(*destreg, srcval); | |
3328 | } else { | |
3329 | u16 *destreg; | |
3330 | u16 srcval; | |
3331 | ||
3332 | destreg = DECODE_RM_WORD_REGISTER(rh); | |
3333 | DECODE_PRINTF(","); | |
3334 | srcoffset = decode_rm01_address(rl); | |
3335 | srcval = fetch_data_word(srcoffset); | |
3336 | DECODE_PRINTF("\n"); | |
3337 | TRACE_AND_STEP(); | |
3338 | cmp_word(*destreg, srcval); | |
3339 | } | |
3340 | break; | |
3341 | case 2: | |
3342 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3343 | u32 *destreg; | |
3344 | u32 srcval; | |
3345 | ||
3346 | destreg = DECODE_RM_LONG_REGISTER(rh); | |
3347 | DECODE_PRINTF(","); | |
3348 | srcoffset = decode_rm10_address(rl); | |
3349 | srcval = fetch_data_long(srcoffset); | |
3350 | DECODE_PRINTF("\n"); | |
3351 | TRACE_AND_STEP(); | |
3352 | cmp_long(*destreg, srcval); | |
3353 | } else { | |
3354 | u16 *destreg; | |
3355 | u16 srcval; | |
3356 | ||
3357 | destreg = DECODE_RM_WORD_REGISTER(rh); | |
3358 | DECODE_PRINTF(","); | |
3359 | srcoffset = decode_rm10_address(rl); | |
3360 | srcval = fetch_data_word(srcoffset); | |
3361 | DECODE_PRINTF("\n"); | |
3362 | TRACE_AND_STEP(); | |
3363 | cmp_word(*destreg, srcval); | |
3364 | } | |
3365 | break; | |
3366 | case 3: /* register to register */ | |
3367 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3368 | u32 *destreg,*srcreg; | |
3369 | ||
3370 | destreg = DECODE_RM_LONG_REGISTER(rh); | |
3371 | DECODE_PRINTF(","); | |
3372 | srcreg = DECODE_RM_LONG_REGISTER(rl); | |
3373 | DECODE_PRINTF("\n"); | |
3374 | TRACE_AND_STEP(); | |
3375 | cmp_long(*destreg, *srcreg); | |
3376 | } else { | |
3377 | u16 *destreg,*srcreg; | |
3378 | ||
3379 | destreg = DECODE_RM_WORD_REGISTER(rh); | |
3380 | DECODE_PRINTF(","); | |
3381 | srcreg = DECODE_RM_WORD_REGISTER(rl); | |
3382 | DECODE_PRINTF("\n"); | |
3383 | TRACE_AND_STEP(); | |
3384 | cmp_word(*destreg, *srcreg); | |
3385 | } | |
3386 | break; | |
3387 | } | |
3388 | DECODE_CLEAR_SEGOVR(); | |
3389 | END_OF_INSTR(); | |
3390 | } | |
3391 | ||
3392 | /**************************************************************************** | |
3393 | REMARKS: | |
3394 | Handles opcode 0x3c | |
3395 | ****************************************************************************/ | |
3396 | static void x86emuOp_cmp_byte_AL_IMM(u8 X86EMU_UNUSED(op1)) | |
3397 | { | |
3398 | u8 srcval; | |
3399 | ||
3400 | START_OF_INSTR(); | |
3401 | DECODE_PRINTF("CMP\tAL,"); | |
3402 | srcval = fetch_byte_imm(); | |
3403 | DECODE_PRINTF2("%x\n", srcval); | |
3404 | TRACE_AND_STEP(); | |
3405 | cmp_byte(M.x86.R_AL, srcval); | |
3406 | DECODE_CLEAR_SEGOVR(); | |
3407 | END_OF_INSTR(); | |
3408 | } | |
3409 | ||
3410 | /**************************************************************************** | |
3411 | REMARKS: | |
3412 | Handles opcode 0x3d | |
3413 | ****************************************************************************/ | |
3414 | static void x86emuOp_cmp_word_AX_IMM(u8 X86EMU_UNUSED(op1)) | |
3415 | { | |
3416 | u32 srcval; | |
3417 | ||
3418 | START_OF_INSTR(); | |
3419 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3420 | DECODE_PRINTF("CMP\tEAX,"); | |
3421 | srcval = fetch_long_imm(); | |
3422 | } else { | |
3423 | DECODE_PRINTF("CMP\tAX,"); | |
3424 | srcval = fetch_word_imm(); | |
3425 | } | |
3426 | DECODE_PRINTF2("%x\n", srcval); | |
3427 | TRACE_AND_STEP(); | |
3428 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3429 | cmp_long(M.x86.R_EAX, srcval); | |
3430 | } else { | |
3431 | cmp_word(M.x86.R_AX, (u16)srcval); | |
3432 | } | |
3433 | DECODE_CLEAR_SEGOVR(); | |
3434 | END_OF_INSTR(); | |
3435 | } | |
3436 | ||
3437 | /**************************************************************************** | |
3438 | REMARKS: | |
3439 | Handles opcode 0x3e | |
3440 | ****************************************************************************/ | |
3441 | static void x86emuOp_segovr_DS(u8 X86EMU_UNUSED(op1)) | |
3442 | { | |
3443 | START_OF_INSTR(); | |
3444 | DECODE_PRINTF("DS:\n"); | |
3445 | TRACE_AND_STEP(); | |
3446 | M.x86.mode |= SYSMODE_SEGOVR_DS; | |
3447 | /* NO DECODE_CLEAR_SEGOVR! */ | |
3448 | END_OF_INSTR(); | |
3449 | } | |
3450 | ||
3451 | /**************************************************************************** | |
3452 | REMARKS: | |
3453 | Handles opcode 0x3f | |
3454 | ****************************************************************************/ | |
3455 | static void x86emuOp_aas(u8 X86EMU_UNUSED(op1)) | |
3456 | { | |
3457 | START_OF_INSTR(); | |
3458 | DECODE_PRINTF("AAS\n"); | |
3459 | TRACE_AND_STEP(); | |
3460 | M.x86.R_AX = aas_word(M.x86.R_AX); | |
3461 | DECODE_CLEAR_SEGOVR(); | |
3462 | END_OF_INSTR(); | |
3463 | } | |
3464 | ||
3465 | /**************************************************************************** | |
3466 | REMARKS: | |
3467 | Handles opcode 0x40 | |
3468 | ****************************************************************************/ | |
3469 | static void x86emuOp_inc_AX(u8 X86EMU_UNUSED(op1)) | |
3470 | { | |
3471 | START_OF_INSTR(); | |
3472 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3473 | DECODE_PRINTF("INC\tEAX\n"); | |
3474 | } else { | |
3475 | DECODE_PRINTF("INC\tAX\n"); | |
3476 | } | |
3477 | TRACE_AND_STEP(); | |
3478 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3479 | M.x86.R_EAX = inc_long(M.x86.R_EAX); | |
3480 | } else { | |
3481 | M.x86.R_AX = inc_word(M.x86.R_AX); | |
3482 | } | |
3483 | DECODE_CLEAR_SEGOVR(); | |
3484 | END_OF_INSTR(); | |
3485 | } | |
3486 | ||
3487 | /**************************************************************************** | |
3488 | REMARKS: | |
3489 | Handles opcode 0x41 | |
3490 | ****************************************************************************/ | |
3491 | static void x86emuOp_inc_CX(u8 X86EMU_UNUSED(op1)) | |
3492 | { | |
3493 | START_OF_INSTR(); | |
3494 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3495 | DECODE_PRINTF("INC\tECX\n"); | |
3496 | } else { | |
3497 | DECODE_PRINTF("INC\tCX\n"); | |
3498 | } | |
3499 | TRACE_AND_STEP(); | |
3500 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3501 | M.x86.R_ECX = inc_long(M.x86.R_ECX); | |
3502 | } else { | |
3503 | M.x86.R_CX = inc_word(M.x86.R_CX); | |
3504 | } | |
3505 | DECODE_CLEAR_SEGOVR(); | |
3506 | END_OF_INSTR(); | |
3507 | } | |
3508 | ||
3509 | /**************************************************************************** | |
3510 | REMARKS: | |
3511 | Handles opcode 0x42 | |
3512 | ****************************************************************************/ | |
3513 | static void x86emuOp_inc_DX(u8 X86EMU_UNUSED(op1)) | |
3514 | { | |
3515 | START_OF_INSTR(); | |
3516 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3517 | DECODE_PRINTF("INC\tEDX\n"); | |
3518 | } else { | |
3519 | DECODE_PRINTF("INC\tDX\n"); | |
3520 | } | |
3521 | TRACE_AND_STEP(); | |
3522 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3523 | M.x86.R_EDX = inc_long(M.x86.R_EDX); | |
3524 | } else { | |
3525 | M.x86.R_DX = inc_word(M.x86.R_DX); | |
3526 | } | |
3527 | DECODE_CLEAR_SEGOVR(); | |
3528 | END_OF_INSTR(); | |
3529 | } | |
3530 | ||
3531 | /**************************************************************************** | |
3532 | REMARKS: | |
3533 | Handles opcode 0x43 | |
3534 | ****************************************************************************/ | |
3535 | static void x86emuOp_inc_BX(u8 X86EMU_UNUSED(op1)) | |
3536 | { | |
3537 | START_OF_INSTR(); | |
3538 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3539 | DECODE_PRINTF("INC\tEBX\n"); | |
3540 | } else { | |
3541 | DECODE_PRINTF("INC\tBX\n"); | |
3542 | } | |
3543 | TRACE_AND_STEP(); | |
3544 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3545 | M.x86.R_EBX = inc_long(M.x86.R_EBX); | |
3546 | } else { | |
3547 | M.x86.R_BX = inc_word(M.x86.R_BX); | |
3548 | } | |
3549 | DECODE_CLEAR_SEGOVR(); | |
3550 | END_OF_INSTR(); | |
3551 | } | |
3552 | ||
3553 | /**************************************************************************** | |
3554 | REMARKS: | |
3555 | Handles opcode 0x44 | |
3556 | ****************************************************************************/ | |
3557 | static void x86emuOp_inc_SP(u8 X86EMU_UNUSED(op1)) | |
3558 | { | |
3559 | START_OF_INSTR(); | |
3560 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3561 | DECODE_PRINTF("INC\tESP\n"); | |
3562 | } else { | |
3563 | DECODE_PRINTF("INC\tSP\n"); | |
3564 | } | |
3565 | TRACE_AND_STEP(); | |
3566 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3567 | M.x86.R_ESP = inc_long(M.x86.R_ESP); | |
3568 | } else { | |
3569 | M.x86.R_SP = inc_word(M.x86.R_SP); | |
3570 | } | |
3571 | DECODE_CLEAR_SEGOVR(); | |
3572 | END_OF_INSTR(); | |
3573 | } | |
3574 | ||
3575 | /**************************************************************************** | |
3576 | REMARKS: | |
3577 | Handles opcode 0x45 | |
3578 | ****************************************************************************/ | |
3579 | static void x86emuOp_inc_BP(u8 X86EMU_UNUSED(op1)) | |
3580 | { | |
3581 | START_OF_INSTR(); | |
3582 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3583 | DECODE_PRINTF("INC\tEBP\n"); | |
3584 | } else { | |
3585 | DECODE_PRINTF("INC\tBP\n"); | |
3586 | } | |
3587 | TRACE_AND_STEP(); | |
3588 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3589 | M.x86.R_EBP = inc_long(M.x86.R_EBP); | |
3590 | } else { | |
3591 | M.x86.R_BP = inc_word(M.x86.R_BP); | |
3592 | } | |
3593 | DECODE_CLEAR_SEGOVR(); | |
3594 | END_OF_INSTR(); | |
3595 | } | |
3596 | ||
3597 | /**************************************************************************** | |
3598 | REMARKS: | |
3599 | Handles opcode 0x46 | |
3600 | ****************************************************************************/ | |
3601 | static void x86emuOp_inc_SI(u8 X86EMU_UNUSED(op1)) | |
3602 | { | |
3603 | START_OF_INSTR(); | |
3604 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3605 | DECODE_PRINTF("INC\tESI\n"); | |
3606 | } else { | |
3607 | DECODE_PRINTF("INC\tSI\n"); | |
3608 | } | |
3609 | TRACE_AND_STEP(); | |
3610 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3611 | M.x86.R_ESI = inc_long(M.x86.R_ESI); | |
3612 | } else { | |
3613 | M.x86.R_SI = inc_word(M.x86.R_SI); | |
3614 | } | |
3615 | DECODE_CLEAR_SEGOVR(); | |
3616 | END_OF_INSTR(); | |
3617 | } | |
3618 | ||
3619 | /**************************************************************************** | |
3620 | REMARKS: | |
3621 | Handles opcode 0x47 | |
3622 | ****************************************************************************/ | |
3623 | static void x86emuOp_inc_DI(u8 X86EMU_UNUSED(op1)) | |
3624 | { | |
3625 | START_OF_INSTR(); | |
3626 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3627 | DECODE_PRINTF("INC\tEDI\n"); | |
3628 | } else { | |
3629 | DECODE_PRINTF("INC\tDI\n"); | |
3630 | } | |
3631 | TRACE_AND_STEP(); | |
3632 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3633 | M.x86.R_EDI = inc_long(M.x86.R_EDI); | |
3634 | } else { | |
3635 | M.x86.R_DI = inc_word(M.x86.R_DI); | |
3636 | } | |
3637 | DECODE_CLEAR_SEGOVR(); | |
3638 | END_OF_INSTR(); | |
3639 | } | |
3640 | ||
3641 | /**************************************************************************** | |
3642 | REMARKS: | |
3643 | Handles opcode 0x48 | |
3644 | ****************************************************************************/ | |
3645 | static void x86emuOp_dec_AX(u8 X86EMU_UNUSED(op1)) | |
3646 | { | |
3647 | START_OF_INSTR(); | |
3648 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3649 | DECODE_PRINTF("DEC\tEAX\n"); | |
3650 | } else { | |
3651 | DECODE_PRINTF("DEC\tAX\n"); | |
3652 | } | |
3653 | TRACE_AND_STEP(); | |
3654 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3655 | M.x86.R_EAX = dec_long(M.x86.R_EAX); | |
3656 | } else { | |
3657 | M.x86.R_AX = dec_word(M.x86.R_AX); | |
3658 | } | |
3659 | DECODE_CLEAR_SEGOVR(); | |
3660 | END_OF_INSTR(); | |
3661 | } | |
3662 | ||
3663 | /**************************************************************************** | |
3664 | REMARKS: | |
3665 | Handles opcode 0x49 | |
3666 | ****************************************************************************/ | |
3667 | static void x86emuOp_dec_CX(u8 X86EMU_UNUSED(op1)) | |
3668 | { | |
3669 | START_OF_INSTR(); | |
3670 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3671 | DECODE_PRINTF("DEC\tECX\n"); | |
3672 | } else { | |
3673 | DECODE_PRINTF("DEC\tCX\n"); | |
3674 | } | |
3675 | TRACE_AND_STEP(); | |
3676 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3677 | M.x86.R_ECX = dec_long(M.x86.R_ECX); | |
3678 | } else { | |
3679 | M.x86.R_CX = dec_word(M.x86.R_CX); | |
3680 | } | |
3681 | DECODE_CLEAR_SEGOVR(); | |
3682 | END_OF_INSTR(); | |
3683 | } | |
3684 | ||
3685 | /**************************************************************************** | |
3686 | REMARKS: | |
3687 | Handles opcode 0x4a | |
3688 | ****************************************************************************/ | |
3689 | static void x86emuOp_dec_DX(u8 X86EMU_UNUSED(op1)) | |
3690 | { | |
3691 | START_OF_INSTR(); | |
3692 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3693 | DECODE_PRINTF("DEC\tEDX\n"); | |
3694 | } else { | |
3695 | DECODE_PRINTF("DEC\tDX\n"); | |
3696 | } | |
3697 | TRACE_AND_STEP(); | |
3698 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3699 | M.x86.R_EDX = dec_long(M.x86.R_EDX); | |
3700 | } else { | |
3701 | M.x86.R_DX = dec_word(M.x86.R_DX); | |
3702 | } | |
3703 | DECODE_CLEAR_SEGOVR(); | |
3704 | END_OF_INSTR(); | |
3705 | } | |
3706 | ||
3707 | /**************************************************************************** | |
3708 | REMARKS: | |
3709 | Handles opcode 0x4b | |
3710 | ****************************************************************************/ | |
3711 | static void x86emuOp_dec_BX(u8 X86EMU_UNUSED(op1)) | |
3712 | { | |
3713 | START_OF_INSTR(); | |
3714 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3715 | DECODE_PRINTF("DEC\tEBX\n"); | |
3716 | } else { | |
3717 | DECODE_PRINTF("DEC\tBX\n"); | |
3718 | } | |
3719 | TRACE_AND_STEP(); | |
3720 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3721 | M.x86.R_EBX = dec_long(M.x86.R_EBX); | |
3722 | } else { | |
3723 | M.x86.R_BX = dec_word(M.x86.R_BX); | |
3724 | } | |
3725 | DECODE_CLEAR_SEGOVR(); | |
3726 | END_OF_INSTR(); | |
3727 | } | |
3728 | ||
3729 | /**************************************************************************** | |
3730 | REMARKS: | |
3731 | Handles opcode 0x4c | |
3732 | ****************************************************************************/ | |
3733 | static void x86emuOp_dec_SP(u8 X86EMU_UNUSED(op1)) | |
3734 | { | |
3735 | START_OF_INSTR(); | |
3736 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3737 | DECODE_PRINTF("DEC\tESP\n"); | |
3738 | } else { | |
3739 | DECODE_PRINTF("DEC\tSP\n"); | |
3740 | } | |
3741 | TRACE_AND_STEP(); | |
3742 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3743 | M.x86.R_ESP = dec_long(M.x86.R_ESP); | |
3744 | } else { | |
3745 | M.x86.R_SP = dec_word(M.x86.R_SP); | |
3746 | } | |
3747 | DECODE_CLEAR_SEGOVR(); | |
3748 | END_OF_INSTR(); | |
3749 | } | |
3750 | ||
3751 | /**************************************************************************** | |
3752 | REMARKS: | |
3753 | Handles opcode 0x4d | |
3754 | ****************************************************************************/ | |
3755 | static void x86emuOp_dec_BP(u8 X86EMU_UNUSED(op1)) | |
3756 | { | |
3757 | START_OF_INSTR(); | |
3758 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3759 | DECODE_PRINTF("DEC\tEBP\n"); | |
3760 | } else { | |
3761 | DECODE_PRINTF("DEC\tBP\n"); | |
3762 | } | |
3763 | TRACE_AND_STEP(); | |
3764 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3765 | M.x86.R_EBP = dec_long(M.x86.R_EBP); | |
3766 | } else { | |
3767 | M.x86.R_BP = dec_word(M.x86.R_BP); | |
3768 | } | |
3769 | DECODE_CLEAR_SEGOVR(); | |
3770 | END_OF_INSTR(); | |
3771 | } | |
3772 | ||
3773 | /**************************************************************************** | |
3774 | REMARKS: | |
3775 | Handles opcode 0x4e | |
3776 | ****************************************************************************/ | |
3777 | static void x86emuOp_dec_SI(u8 X86EMU_UNUSED(op1)) | |
3778 | { | |
3779 | START_OF_INSTR(); | |
3780 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3781 | DECODE_PRINTF("DEC\tESI\n"); | |
3782 | } else { | |
3783 | DECODE_PRINTF("DEC\tSI\n"); | |
3784 | } | |
3785 | TRACE_AND_STEP(); | |
3786 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3787 | M.x86.R_ESI = dec_long(M.x86.R_ESI); | |
3788 | } else { | |
3789 | M.x86.R_SI = dec_word(M.x86.R_SI); | |
3790 | } | |
3791 | DECODE_CLEAR_SEGOVR(); | |
3792 | END_OF_INSTR(); | |
3793 | } | |
3794 | ||
3795 | /**************************************************************************** | |
3796 | REMARKS: | |
3797 | Handles opcode 0x4f | |
3798 | ****************************************************************************/ | |
3799 | static void x86emuOp_dec_DI(u8 X86EMU_UNUSED(op1)) | |
3800 | { | |
3801 | START_OF_INSTR(); | |
3802 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3803 | DECODE_PRINTF("DEC\tEDI\n"); | |
3804 | } else { | |
3805 | DECODE_PRINTF("DEC\tDI\n"); | |
3806 | } | |
3807 | TRACE_AND_STEP(); | |
3808 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3809 | M.x86.R_EDI = dec_long(M.x86.R_EDI); | |
3810 | } else { | |
3811 | M.x86.R_DI = dec_word(M.x86.R_DI); | |
3812 | } | |
3813 | DECODE_CLEAR_SEGOVR(); | |
3814 | END_OF_INSTR(); | |
3815 | } | |
3816 | ||
3817 | /**************************************************************************** | |
3818 | REMARKS: | |
3819 | Handles opcode 0x50 | |
3820 | ****************************************************************************/ | |
3821 | static void x86emuOp_push_AX(u8 X86EMU_UNUSED(op1)) | |
3822 | { | |
3823 | START_OF_INSTR(); | |
3824 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3825 | DECODE_PRINTF("PUSH\tEAX\n"); | |
3826 | } else { | |
3827 | DECODE_PRINTF("PUSH\tAX\n"); | |
3828 | } | |
3829 | TRACE_AND_STEP(); | |
3830 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3831 | push_long(M.x86.R_EAX); | |
3832 | } else { | |
3833 | push_word(M.x86.R_AX); | |
3834 | } | |
3835 | DECODE_CLEAR_SEGOVR(); | |
3836 | END_OF_INSTR(); | |
3837 | } | |
3838 | ||
3839 | /**************************************************************************** | |
3840 | REMARKS: | |
3841 | Handles opcode 0x51 | |
3842 | ****************************************************************************/ | |
3843 | static void x86emuOp_push_CX(u8 X86EMU_UNUSED(op1)) | |
3844 | { | |
3845 | START_OF_INSTR(); | |
3846 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3847 | DECODE_PRINTF("PUSH\tECX\n"); | |
3848 | } else { | |
3849 | DECODE_PRINTF("PUSH\tCX\n"); | |
3850 | } | |
3851 | TRACE_AND_STEP(); | |
3852 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3853 | push_long(M.x86.R_ECX); | |
3854 | } else { | |
3855 | push_word(M.x86.R_CX); | |
3856 | } | |
3857 | DECODE_CLEAR_SEGOVR(); | |
3858 | END_OF_INSTR(); | |
3859 | } | |
3860 | ||
3861 | /**************************************************************************** | |
3862 | REMARKS: | |
3863 | Handles opcode 0x52 | |
3864 | ****************************************************************************/ | |
3865 | static void x86emuOp_push_DX(u8 X86EMU_UNUSED(op1)) | |
3866 | { | |
3867 | START_OF_INSTR(); | |
3868 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3869 | DECODE_PRINTF("PUSH\tEDX\n"); | |
3870 | } else { | |
3871 | DECODE_PRINTF("PUSH\tDX\n"); | |
3872 | } | |
3873 | TRACE_AND_STEP(); | |
3874 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3875 | push_long(M.x86.R_EDX); | |
3876 | } else { | |
3877 | push_word(M.x86.R_DX); | |
3878 | } | |
3879 | DECODE_CLEAR_SEGOVR(); | |
3880 | END_OF_INSTR(); | |
3881 | } | |
3882 | ||
3883 | /**************************************************************************** | |
3884 | REMARKS: | |
3885 | Handles opcode 0x53 | |
3886 | ****************************************************************************/ | |
3887 | static void x86emuOp_push_BX(u8 X86EMU_UNUSED(op1)) | |
3888 | { | |
3889 | START_OF_INSTR(); | |
3890 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3891 | DECODE_PRINTF("PUSH\tEBX\n"); | |
3892 | } else { | |
3893 | DECODE_PRINTF("PUSH\tBX\n"); | |
3894 | } | |
3895 | TRACE_AND_STEP(); | |
3896 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3897 | push_long(M.x86.R_EBX); | |
3898 | } else { | |
3899 | push_word(M.x86.R_BX); | |
3900 | } | |
3901 | DECODE_CLEAR_SEGOVR(); | |
3902 | END_OF_INSTR(); | |
3903 | } | |
3904 | ||
3905 | /**************************************************************************** | |
3906 | REMARKS: | |
3907 | Handles opcode 0x54 | |
3908 | ****************************************************************************/ | |
3909 | static void x86emuOp_push_SP(u8 X86EMU_UNUSED(op1)) | |
3910 | { | |
3911 | START_OF_INSTR(); | |
3912 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3913 | DECODE_PRINTF("PUSH\tESP\n"); | |
3914 | } else { | |
3915 | DECODE_PRINTF("PUSH\tSP\n"); | |
3916 | } | |
3917 | TRACE_AND_STEP(); | |
3918 | /* Always push (E)SP, since we are emulating an i386 and above | |
3919 | * processor. This is necessary as some BIOS'es use this to check | |
3920 | * what type of processor is in the system. | |
3921 | */ | |
3922 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3923 | push_long(M.x86.R_ESP); | |
3924 | } else { | |
3925 | push_word((u16)(M.x86.R_SP)); | |
3926 | } | |
3927 | DECODE_CLEAR_SEGOVR(); | |
3928 | END_OF_INSTR(); | |
3929 | } | |
3930 | ||
3931 | /**************************************************************************** | |
3932 | REMARKS: | |
3933 | Handles opcode 0x55 | |
3934 | ****************************************************************************/ | |
3935 | static void x86emuOp_push_BP(u8 X86EMU_UNUSED(op1)) | |
3936 | { | |
3937 | START_OF_INSTR(); | |
3938 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3939 | DECODE_PRINTF("PUSH\tEBP\n"); | |
3940 | } else { | |
3941 | DECODE_PRINTF("PUSH\tBP\n"); | |
3942 | } | |
3943 | TRACE_AND_STEP(); | |
3944 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3945 | push_long(M.x86.R_EBP); | |
3946 | } else { | |
3947 | push_word(M.x86.R_BP); | |
3948 | } | |
3949 | DECODE_CLEAR_SEGOVR(); | |
3950 | END_OF_INSTR(); | |
3951 | } | |
3952 | ||
3953 | /**************************************************************************** | |
3954 | REMARKS: | |
3955 | Handles opcode 0x56 | |
3956 | ****************************************************************************/ | |
3957 | static void x86emuOp_push_SI(u8 X86EMU_UNUSED(op1)) | |
3958 | { | |
3959 | START_OF_INSTR(); | |
3960 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3961 | DECODE_PRINTF("PUSH\tESI\n"); | |
3962 | } else { | |
3963 | DECODE_PRINTF("PUSH\tSI\n"); | |
3964 | } | |
3965 | TRACE_AND_STEP(); | |
3966 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3967 | push_long(M.x86.R_ESI); | |
3968 | } else { | |
3969 | push_word(M.x86.R_SI); | |
3970 | } | |
3971 | DECODE_CLEAR_SEGOVR(); | |
3972 | END_OF_INSTR(); | |
3973 | } | |
3974 | ||
3975 | /**************************************************************************** | |
3976 | REMARKS: | |
3977 | Handles opcode 0x57 | |
3978 | ****************************************************************************/ | |
3979 | static void x86emuOp_push_DI(u8 X86EMU_UNUSED(op1)) | |
3980 | { | |
3981 | START_OF_INSTR(); | |
3982 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3983 | DECODE_PRINTF("PUSH\tEDI\n"); | |
3984 | } else { | |
3985 | DECODE_PRINTF("PUSH\tDI\n"); | |
3986 | } | |
3987 | TRACE_AND_STEP(); | |
3988 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
3989 | push_long(M.x86.R_EDI); | |
3990 | } else { | |
3991 | push_word(M.x86.R_DI); | |
3992 | } | |
3993 | DECODE_CLEAR_SEGOVR(); | |
3994 | END_OF_INSTR(); | |
3995 | } | |
3996 | ||
3997 | /**************************************************************************** | |
3998 | REMARKS: | |
3999 | Handles opcode 0x58 | |
4000 | ****************************************************************************/ | |
4001 | static void x86emuOp_pop_AX(u8 X86EMU_UNUSED(op1)) | |
4002 | { | |
4003 | START_OF_INSTR(); | |
4004 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
4005 | DECODE_PRINTF("POP\tEAX\n"); | |
4006 | } else { | |
4007 | DECODE_PRINTF("POP\tAX\n"); | |
4008 | } | |
4009 | TRACE_AND_STEP(); | |
4010 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
4011 | M.x86.R_EAX = pop_long(); | |
4012 | } else { | |
4013 | M.x86.R_AX = pop_word(); | |
4014 | } | |
4015 | DECODE_CLEAR_SEGOVR(); | |
4016 | END_OF_INSTR(); | |
4017 | } | |
4018 | ||
4019 | /**************************************************************************** | |
4020 | REMARKS: | |
4021 | Handles opcode 0x59 | |
4022 | ****************************************************************************/ | |
4023 | static void x86emuOp_pop_CX(u8 X86EMU_UNUSED(op1)) | |
4024 | { | |
4025 | START_OF_INSTR(); | |
4026 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
4027 | DECODE_PRINTF("POP\tECX\n"); | |
4028 | } else { | |
4029 | DECODE_PRINTF("POP\tCX\n"); | |
4030 | } | |
4031 | TRACE_AND_STEP(); | |
4032 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
4033 | M.x86.R_ECX = pop_long(); | |
4034 | } else { | |
4035 | M.x86.R_CX = pop_word(); | |
4036 | } | |
4037 | DECODE_CLEAR_SEGOVR(); | |
4038 | END_OF_INSTR(); | |
4039 | } | |
4040 | ||
4041 | /**************************************************************************** | |
4042 | REMARKS: | |
4043 | Handles opcode 0x5a | |
4044 | ****************************************************************************/ | |
4045 | static void x86emuOp_pop_DX(u8 X86EMU_UNUSED(op1)) | |
4046 | { | |
4047 | START_OF_INSTR(); | |
4048 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
4049 | DECODE_PRINTF("POP\tEDX\n"); | |
4050 | } else { | |
4051 | DECODE_PRINTF("POP\tDX\n"); | |
4052 | } | |
4053 | TRACE_AND_STEP(); | |
4054 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
4055 | M.x86.R_EDX = pop_long(); | |
4056 | } else { | |
4057 | M.x86.R_DX = pop_word(); | |
4058 | } | |
4059 | DECODE_CLEAR_SEGOVR(); | |
4060 | END_OF_INSTR(); | |
4061 | } | |
4062 | ||
4063 | /**************************************************************************** | |
4064 | REMARKS: | |
4065 | Handles opcode 0x5b | |
4066 | ****************************************************************************/ | |
4067 | static void x86emuOp_pop_BX(u8 X86EMU_UNUSED(op1)) | |
4068 | { | |
4069 | START_OF_INSTR(); | |
4070 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
4071 | DECODE_PRINTF("POP\tEBX\n"); | |
4072 | } else { | |
4073 | DECODE_PRINTF("POP\tBX\n"); | |
4074 | } | |
4075 | TRACE_AND_STEP(); | |
4076 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
4077 | M.x86.R_EBX = pop_long(); | |
4078 | } else { | |
4079 | M.x86.R_BX = pop_word(); | |
4080 | } | |
4081 | DECODE_CLEAR_SEGOVR(); | |
4082 | END_OF_INSTR(); | |
4083 | } | |
4084 | ||
4085 | /**************************************************************************** | |
4086 | REMARKS: | |
4087 | Handles opcode 0x5c | |
4088 | ****************************************************************************/ | |
4089 | static void x86emuOp_pop_SP(u8 X86EMU_UNUSED(op1)) | |
4090 | { | |
4091 | START_OF_INSTR(); | |
4092 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
4093 | DECODE_PRINTF("POP\tESP\n"); | |
4094 | } else { | |
4095 | DECODE_PRINTF("POP\tSP\n"); | |
4096 | } | |
4097 | TRACE_AND_STEP(); | |
4098 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
4099 | M.x86.R_ESP = pop_long(); | |
4100 | } else { | |
4101 | M.x86.R_SP = pop_word(); | |
4102 | } | |
4103 | DECODE_CLEAR_SEGOVR(); | |
4104 | END_OF_INSTR(); | |
4105 | } | |
4106 | ||
4107 | /**************************************************************************** | |
4108 | REMARKS: | |
4109 | Handles opcode 0x5d | |
4110 | ****************************************************************************/ | |
4111 | static void x86emuOp_pop_BP(u8 X86EMU_UNUSED(op1)) | |
4112 | { | |
4113 | START_OF_INSTR(); | |
4114 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
4115 | DECODE_PRINTF("POP\tEBP\n"); | |
4116 | } else { | |
4117 | DECODE_PRINTF("POP\tBP\n"); | |
4118 | } | |
4119 | TRACE_AND_STEP(); | |
4120 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
4121 | M.x86.R_EBP = pop_long(); | |
4122 | } else { | |
4123 | M.x86.R_BP = pop_word(); | |
4124 | } | |
4125 | DECODE_CLEAR_SEGOVR(); | |
4126 | END_OF_INSTR(); | |
4127 | } | |
4128 | ||
4129 | /**************************************************************************** | |
4130 | REMARKS: | |
4131 | Handles opcode 0x5e | |
4132 | ****************************************************************************/ | |
4133 | static void x86emuOp_pop_SI(u8 X86EMU_UNUSED(op1)) | |
4134 | { | |
4135 | START_OF_INSTR(); | |
4136 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
4137 | DECODE_PRINTF("POP\tESI\n"); | |
4138 | } else { | |
4139 | DECODE_PRINTF("POP\tSI\n"); | |
4140 | } | |
4141 | TRACE_AND_STEP(); | |
4142 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
4143 | M.x86.R_ESI = pop_long(); | |
4144 | } else { | |
4145 | M.x86.R_SI = pop_word(); | |
4146 | } | |
4147 | DECODE_CLEAR_SEGOVR(); | |
4148 | END_OF_INSTR(); | |
4149 | } | |
4150 | ||
4151 | /**************************************************************************** | |
4152 | REMARKS: | |
4153 | Handles opcode 0x5f | |
4154 | ****************************************************************************/ | |
4155 | static void x86emuOp_pop_DI(u8 X86EMU_UNUSED(op1)) | |
4156 | { | |
4157 | START_OF_INSTR(); | |
4158 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
4159 | DECODE_PRINTF("POP\tEDI\n"); | |
4160 | } else { | |
4161 | DECODE_PRINTF("POP\tDI\n"); | |
4162 | } | |
4163 | TRACE_AND_STEP(); | |
4164 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
4165 | M.x86.R_EDI = pop_long(); | |
4166 | } else { | |
4167 | M.x86.R_DI = pop_word(); | |
4168 | } | |
4169 | DECODE_CLEAR_SEGOVR(); | |
4170 | END_OF_INSTR(); | |
4171 | } | |
4172 | ||
4173 | /**************************************************************************** | |
4174 | REMARKS: | |
4175 | Handles opcode 0x60 | |
4176 | ****************************************************************************/ | |
4177 | static void x86emuOp_push_all(u8 X86EMU_UNUSED(op1)) | |
4178 | { | |
4179 | START_OF_INSTR(); | |
4180 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
4181 | DECODE_PRINTF("PUSHAD\n"); | |
4182 | } else { | |
4183 | DECODE_PRINTF("PUSHA\n"); | |
4184 | } | |
4185 | TRACE_AND_STEP(); | |
4186 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
4187 | u32 old_sp = M.x86.R_ESP; | |
4188 | ||
4189 | push_long(M.x86.R_EAX); | |
4190 | push_long(M.x86.R_ECX); | |
4191 | push_long(M.x86.R_EDX); | |
4192 | push_long(M.x86.R_EBX); | |
4193 | push_long(old_sp); | |
4194 | push_long(M.x86.R_EBP); | |
4195 | push_long(M.x86.R_ESI); | |
4196 | push_long(M.x86.R_EDI); | |
4197 | } else { | |
4198 | u16 old_sp = M.x86.R_SP; | |
4199 | ||
4200 | push_word(M.x86.R_AX); | |
4201 | push_word(M.x86.R_CX); | |
4202 | push_word(M.x86.R_DX); | |
4203 | push_word(M.x86.R_BX); | |
4204 | push_word(old_sp); | |
4205 | push_word(M.x86.R_BP); | |
4206 | push_word(M.x86.R_SI); | |
4207 | push_word(M.x86.R_DI); | |
4208 | } | |
4209 | DECODE_CLEAR_SEGOVR(); | |
4210 | END_OF_INSTR(); | |
4211 | } | |
4212 | ||
4213 | /**************************************************************************** | |
4214 | REMARKS: | |
4215 | Handles opcode 0x61 | |
4216 | ****************************************************************************/ | |
4217 | static void x86emuOp_pop_all(u8 X86EMU_UNUSED(op1)) | |
4218 | { | |
4219 | START_OF_INSTR(); | |
4220 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
4221 | DECODE_PRINTF("POPAD\n"); | |
4222 | } else { | |
4223 | DECODE_PRINTF("POPA\n"); | |
4224 | } | |
4225 | TRACE_AND_STEP(); | |
4226 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
4227 | M.x86.R_EDI = pop_long(); | |
4228 | M.x86.R_ESI = pop_long(); | |
4229 | M.x86.R_EBP = pop_long(); | |
4230 | M.x86.R_ESP += 4; /* skip ESP */ | |
4231 | M.x86.R_EBX = pop_long(); | |
4232 | M.x86.R_EDX = pop_long(); | |
4233 | M.x86.R_ECX = pop_long(); | |
4234 | M.x86.R_EAX = pop_long(); | |
4235 | } else { | |
4236 | M.x86.R_DI = pop_word(); | |
4237 | M.x86.R_SI = pop_word(); | |
4238 | M.x86.R_BP = pop_word(); | |
4239 | M.x86.R_SP += 2; /* skip SP */ | |
4240 | M.x86.R_BX = pop_word(); | |
4241 | M.x86.R_DX = pop_word(); | |
4242 | M.x86.R_CX = pop_word(); | |
4243 | M.x86.R_AX = pop_word(); | |
4244 | } | |
4245 | DECODE_CLEAR_SEGOVR(); | |
4246 | END_OF_INSTR(); | |
4247 | } | |
4248 | ||
4249 | /*opcode 0x62 ILLEGAL OP, calls x86emuOp_illegal_op() */ | |
4250 | /*opcode 0x63 ILLEGAL OP, calls x86emuOp_illegal_op() */ | |
4251 | ||
4252 | /**************************************************************************** | |
4253 | REMARKS: | |
4254 | Handles opcode 0x64 | |
4255 | ****************************************************************************/ | |
4256 | static void x86emuOp_segovr_FS(u8 X86EMU_UNUSED(op1)) | |
4257 | { | |
4258 | START_OF_INSTR(); | |
4259 | DECODE_PRINTF("FS:\n"); | |
4260 | TRACE_AND_STEP(); | |
4261 | M.x86.mode |= SYSMODE_SEGOVR_FS; | |
4262 | /* | |
4263 | * note the lack of DECODE_CLEAR_SEGOVR(r) since, here is one of 4 | |
4264 | * opcode subroutines we do not want to do this. | |
4265 | */ | |
4266 | END_OF_INSTR(); | |
4267 | } | |
4268 | ||
4269 | /**************************************************************************** | |
4270 | REMARKS: | |
4271 | Handles opcode 0x65 | |
4272 | ****************************************************************************/ | |
4273 | static void x86emuOp_segovr_GS(u8 X86EMU_UNUSED(op1)) | |
4274 | { | |
4275 | START_OF_INSTR(); | |
4276 | DECODE_PRINTF("GS:\n"); | |
4277 | TRACE_AND_STEP(); | |
4278 | M.x86.mode |= SYSMODE_SEGOVR_GS; | |
4279 | /* | |
4280 | * note the lack of DECODE_CLEAR_SEGOVR(r) since, here is one of 4 | |
4281 | * opcode subroutines we do not want to do this. | |
4282 | */ | |
4283 | END_OF_INSTR(); | |
4284 | } | |
4285 | ||
4286 | /**************************************************************************** | |
4287 | REMARKS: | |
4288 | Handles opcode 0x66 - prefix for 32-bit register | |
4289 | ****************************************************************************/ | |
4290 | static void x86emuOp_prefix_data(u8 X86EMU_UNUSED(op1)) | |
4291 | { | |
4292 | START_OF_INSTR(); | |
4293 | DECODE_PRINTF("DATA:\n"); | |
4294 | TRACE_AND_STEP(); | |
4295 | M.x86.mode |= SYSMODE_PREFIX_DATA; | |
4296 | /* note no DECODE_CLEAR_SEGOVR here. */ | |
4297 | END_OF_INSTR(); | |
4298 | } | |
4299 | ||
4300 | /**************************************************************************** | |
4301 | REMARKS: | |
4302 | Handles opcode 0x67 - prefix for 32-bit address | |
4303 | ****************************************************************************/ | |
4304 | static void x86emuOp_prefix_addr(u8 X86EMU_UNUSED(op1)) | |
4305 | { | |
4306 | START_OF_INSTR(); | |
4307 | DECODE_PRINTF("ADDR:\n"); | |
4308 | TRACE_AND_STEP(); | |
4309 | M.x86.mode |= SYSMODE_PREFIX_ADDR; | |
4310 | /* note no DECODE_CLEAR_SEGOVR here. */ | |
4311 | END_OF_INSTR(); | |
4312 | } | |
4313 | ||
4314 | /**************************************************************************** | |
4315 | REMARKS: | |
4316 | Handles opcode 0x68 | |
4317 | ****************************************************************************/ | |
4318 | static void x86emuOp_push_word_IMM(u8 X86EMU_UNUSED(op1)) | |
4319 | { | |
4320 | u32 imm; | |
4321 | ||
4322 | START_OF_INSTR(); | |
4323 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
4324 | imm = fetch_long_imm(); | |
4325 | } else { | |
4326 | imm = fetch_word_imm(); | |
4327 | } | |
4328 | DECODE_PRINTF2("PUSH\t%x\n", imm); | |
4329 | TRACE_AND_STEP(); | |
4330 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
4331 | push_long(imm); | |
4332 | } else { | |
4333 | push_word((u16)imm); | |
4334 | } | |
4335 | DECODE_CLEAR_SEGOVR(); | |
4336 | END_OF_INSTR(); | |
4337 | } | |
4338 | ||
4339 | /**************************************************************************** | |
4340 | REMARKS: | |
4341 | Handles opcode 0x69 | |
4342 | ****************************************************************************/ | |
4343 | static void x86emuOp_imul_word_IMM(u8 X86EMU_UNUSED(op1)) | |
4344 | { | |
4345 | int mod, rl, rh; | |
4346 | uint srcoffset; | |
4347 | ||
4348 | START_OF_INSTR(); | |
4349 | DECODE_PRINTF("IMUL\t"); | |
4350 | FETCH_DECODE_MODRM(mod, rh, rl); | |
4351 | switch (mod) { | |
4352 | case 0: | |
4353 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
4354 | u32 *destreg; | |
4355 | u32 srcval; | |
4356 | u32 res_lo,res_hi; | |
4357 | s32 imm; | |
4358 | ||
4359 | destreg = DECODE_RM_LONG_REGISTER(rh); | |
4360 | DECODE_PRINTF(","); | |
4361 | srcoffset = decode_rm00_address(rl); | |
4362 | srcval = fetch_data_long(srcoffset); | |
4363 | imm = fetch_long_imm(); | |
4364 | DECODE_PRINTF2(",%d\n", (s32)imm); | |
4365 | TRACE_AND_STEP(); | |
4366 | imul_long_direct(&res_lo,&res_hi,(s32)srcval,(s32)imm); | |
4367 | if (res_hi != 0) { | |
4368 | SET_FLAG(F_CF); | |
4369 | SET_FLAG(F_OF); | |
4370 | } else { | |
4371 | CLEAR_FLAG(F_CF); | |
4372 | CLEAR_FLAG(F_OF); | |
4373 | } | |
4374 | *destreg = (u32)res_lo; | |
4375 | } else { | |
4376 | u16 *destreg; | |
4377 | u16 srcval; | |
4378 | u32 res; | |
4379 | s16 imm; | |
4380 | ||
4381 | destreg = DECODE_RM_WORD_REGISTER(rh); | |
4382 | DECODE_PRINTF(","); | |
4383 | srcoffset = decode_rm00_address(rl); | |
4384 | srcval = fetch_data_word(srcoffset); | |
4385 | imm = fetch_word_imm(); | |
4386 | DECODE_PRINTF2(",%d\n", (s32)imm); | |
4387 | TRACE_AND_STEP(); | |
4388 | res = (s16)srcval * (s16)imm; | |
4389 | if (res > 0xFFFF) { | |
4390 | SET_FLAG(F_CF); | |
4391 | SET_FLAG(F_OF); | |
4392 | } else { | |
4393 | CLEAR_FLAG(F_CF); | |
4394 | CLEAR_FLAG(F_OF); | |
4395 | } | |
4396 | *destreg = (u16)res; | |
4397 | } | |
4398 | break; | |
4399 | case 1: | |
4400 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
4401 | u32 *destreg; | |
4402 | u32 srcval; | |
4403 | u32 res_lo,res_hi; | |
4404 | s32 imm; | |
4405 | ||
4406 | destreg = DECODE_RM_LONG_REGISTER(rh); | |
4407 | DECODE_PRINTF(","); | |
4408 | srcoffset = decode_rm01_address(rl); | |
4409 | srcval = fetch_data_long(srcoffset); | |
4410 | imm = fetch_long_imm(); | |
4411 | DECODE_PRINTF2(",%d\n", (s32)imm); | |
4412 | TRACE_AND_STEP(); | |
4413 | imul_long_direct(&res_lo,&res_hi,(s32)srcval,(s32)imm); | |
4414 | if (res_hi != 0) { | |
4415 | SET_FLAG(F_CF); | |
4416 | SET_FLAG(F_OF); | |
4417 | } else { | |
4418 | CLEAR_FLAG(F_CF); | |
4419 | CLEAR_FLAG(F_OF); | |
4420 | } | |
4421 | *destreg = (u32)res_lo; | |
4422 | } else { | |
4423 | u16 *destreg; | |
4424 | u16 srcval; | |
4425 | u32 res; | |
4426 | s16 imm; | |
4427 | ||
4428 | destreg = DECODE_RM_WORD_REGISTER(rh); | |
4429 | DECODE_PRINTF(","); | |
4430 | srcoffset = decode_rm01_address(rl); | |
4431 | srcval = fetch_data_word(srcoffset); | |
4432 | imm = fetch_word_imm(); | |
4433 | DECODE_PRINTF2(",%d\n", (s32)imm); | |
4434 | TRACE_AND_STEP(); | |
4435 | res = (s16)srcval * (s16)imm; | |
4436 | if (res > 0xFFFF) { | |
4437 | SET_FLAG(F_CF); | |
4438 | SET_FLAG(F_OF); | |
4439 | } else { | |
4440 | CLEAR_FLAG(F_CF); | |
4441 | CLEAR_FLAG(F_OF); | |
4442 | } | |
4443 | *destreg = (u16)res; | |
4444 | } | |
4445 | break; | |
4446 | case 2: | |
4447 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
4448 | u32 *destreg; | |
4449 | u32 srcval; | |
4450 | u32 res_lo,res_hi; | |
4451 | s32 imm; | |
4452 | ||
4453 | destreg = DECODE_RM_LONG_REGISTER(rh); | |
4454 | DECODE_PRINTF(","); | |
4455 | srcoffset = decode_rm10_address(rl); | |
4456 | srcval = fetch_data_long(srcoffset); | |
4457 | imm = fetch_long_imm(); | |
4458 | DECODE_PRINTF2(",%d\n", (s32)imm); | |
4459 | TRACE_AND_STEP(); | |
4460 | imul_long_direct(&res_lo,&res_hi,(s32)srcval,(s32)imm); | |
4461 | if (res_hi != 0) { | |
4462 | SET_FLAG(F_CF); | |
4463 | SET_FLAG(F_OF); | |
4464 | } else { | |
4465 | CLEAR_FLAG(F_CF); | |
4466 | CLEAR_FLAG(F_OF); | |
4467 | } | |
4468 | *destreg = (u32)res_lo; | |
4469 | } else { | |
4470 | u16 *destreg; | |
4471 | u16 srcval; | |
4472 | u32 res; | |
4473 | s16 imm; | |
4474 | ||
4475 | destreg = DECODE_RM_WORD_REGISTER(rh); | |
4476 | DECODE_PRINTF(","); | |
4477 | srcoffset = decode_rm10_address(rl); | |
4478 | srcval = fetch_data_word(srcoffset); | |
4479 | imm = fetch_word_imm(); | |
4480 | DECODE_PRINTF2(",%d\n", (s32)imm); | |
4481 | TRACE_AND_STEP(); | |
4482 | res = (s16)srcval * (s16)imm; | |
4483 | if (res > 0xFFFF) { | |
4484 | SET_FLAG(F_CF); | |
4485 | SET_FLAG(F_OF); | |
4486 | } else { | |
4487 | CLEAR_FLAG(F_CF); | |
4488 | CLEAR_FLAG(F_OF); | |
4489 | } | |
4490 | *destreg = (u16)res; | |
4491 | } | |
4492 | break; | |
4493 | case 3: /* register to register */ | |
4494 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
4495 | u32 *destreg,*srcreg; | |
4496 | u32 res_lo,res_hi; | |
4497 | s32 imm; | |
4498 | ||
4499 | destreg = DECODE_RM_LONG_REGISTER(rh); | |
4500 | DECODE_PRINTF(","); | |
4501 | srcreg = DECODE_RM_LONG_REGISTER(rl); | |
4502 | imm = fetch_long_imm(); | |
4503 | DECODE_PRINTF2(",%d\n", (s32)imm); | |
4504 | TRACE_AND_STEP(); | |
4505 | imul_long_direct(&res_lo,&res_hi,(s32)*srcreg,(s32)imm); | |
4506 | if (res_hi != 0) { | |
4507 | SET_FLAG(F_CF); | |
4508 | SET_FLAG(F_OF); | |
4509 | } else { | |
4510 | CLEAR_FLAG(F_CF); | |
4511 | CLEAR_FLAG(F_OF); | |
4512 | } | |
4513 | *destreg = (u32)res_lo; | |
4514 | } else { | |
4515 | u16 *destreg,*srcreg; | |
4516 | u32 res; | |
4517 | s16 imm; | |
4518 | ||
4519 | destreg = DECODE_RM_WORD_REGISTER(rh); | |
4520 | DECODE_PRINTF(","); | |
4521 | srcreg = DECODE_RM_WORD_REGISTER(rl); | |
4522 | imm = fetch_word_imm(); | |
4523 | DECODE_PRINTF2(",%d\n", (s32)imm); | |
4524 | res = (s16)*srcreg * (s16)imm; | |
4525 | if (res > 0xFFFF) { | |
4526 | SET_FLAG(F_CF); | |
4527 | SET_FLAG(F_OF); | |
4528 | } else { | |
4529 | CLEAR_FLAG(F_CF); | |
4530 | CLEAR_FLAG(F_OF); | |
4531 | } | |
4532 | *destreg = (u16)res; | |
4533 | } | |
4534 | break; | |
4535 | } | |
4536 | DECODE_CLEAR_SEGOVR(); | |
4537 | END_OF_INSTR(); | |
4538 | } | |
4539 | ||
4540 | /**************************************************************************** | |
4541 | REMARKS: | |
4542 | Handles opcode 0x6a | |
4543 | ****************************************************************************/ | |
4544 | static void x86emuOp_push_byte_IMM(u8 X86EMU_UNUSED(op1)) | |
4545 | { | |
4546 | s16 imm; | |
4547 | ||
4548 | START_OF_INSTR(); | |
4549 | imm = (s8)fetch_byte_imm(); | |
4550 | DECODE_PRINTF2("PUSH\t%d\n", imm); | |
4551 | TRACE_AND_STEP(); | |
4552 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
4553 | push_long((s32)imm); | |
4554 | } else { | |
4555 | push_word(imm); | |
4556 | } | |
4557 | DECODE_CLEAR_SEGOVR(); | |
4558 | END_OF_INSTR(); | |
4559 | } | |
4560 | ||
4561 | /**************************************************************************** | |
4562 | REMARKS: | |
4563 | Handles opcode 0x6b | |
4564 | ****************************************************************************/ | |
4565 | static void x86emuOp_imul_byte_IMM(u8 X86EMU_UNUSED(op1)) | |
4566 | { | |
4567 | int mod, rl, rh; | |
4568 | uint srcoffset; | |
4569 | s8 imm; | |
4570 | ||
4571 | START_OF_INSTR(); | |
4572 | DECODE_PRINTF("IMUL\t"); | |
4573 | FETCH_DECODE_MODRM(mod, rh, rl); | |
4574 | switch (mod) { | |
4575 | case 0: | |
4576 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
4577 | u32 *destreg; | |
4578 | u32 srcval; | |
4579 | u32 res_lo,res_hi; | |
4580 | ||
4581 | destreg = DECODE_RM_LONG_REGISTER(rh); | |
4582 | DECODE_PRINTF(","); | |
4583 | srcoffset = decode_rm00_address(rl); | |
4584 | srcval = fetch_data_long(srcoffset); | |
4585 | imm = fetch_byte_imm(); | |
4586 | DECODE_PRINTF2(",%d\n", (s32)imm); | |
4587 | TRACE_AND_STEP(); | |
4588 | imul_long_direct(&res_lo,&res_hi,(s32)srcval,(s32)imm); | |
4589 | if (res_hi != 0) { | |
4590 | SET_FLAG(F_CF); | |
4591 | SET_FLAG(F_OF); | |
4592 | } else { | |
4593 | CLEAR_FLAG(F_CF); | |
4594 | CLEAR_FLAG(F_OF); | |
4595 | } | |
4596 | *destreg = (u32)res_lo; | |
4597 | } else { | |
4598 | u16 *destreg; | |
4599 | u16 srcval; | |
4600 | u32 res; | |
4601 | ||
4602 | destreg = DECODE_RM_WORD_REGISTER(rh); | |
4603 | DECODE_PRINTF(","); | |
4604 | srcoffset = decode_rm00_address(rl); | |
4605 | srcval = fetch_data_word(srcoffset); | |
4606 | imm = fetch_byte_imm(); | |
4607 | DECODE_PRINTF2(",%d\n", (s32)imm); | |
4608 | TRACE_AND_STEP(); | |
4609 | res = (s16)srcval * (s16)imm; | |
4610 | if (res > 0xFFFF) { | |
4611 | SET_FLAG(F_CF); | |
4612 | SET_FLAG(F_OF); | |
4613 | } else { | |
4614 | CLEAR_FLAG(F_CF); | |
4615 | CLEAR_FLAG(F_OF); | |
4616 | } | |
4617 | *destreg = (u16)res; | |
4618 | } | |
4619 | break; | |
4620 | case 1: | |
4621 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
4622 | u32 *destreg; | |
4623 | u32 srcval; | |
4624 | u32 res_lo,res_hi; | |
4625 | ||
4626 | destreg = DECODE_RM_LONG_REGISTER(rh); | |
4627 | DECODE_PRINTF(","); | |
4628 | srcoffset = decode_rm01_address(rl); | |
4629 | srcval = fetch_data_long(srcoffset); | |
4630 | imm = fetch_byte_imm(); | |
4631 | DECODE_PRINTF2(",%d\n", (s32)imm); | |
4632 | TRACE_AND_STEP(); | |
4633 | imul_long_direct(&res_lo,&res_hi,(s32)srcval,(s32)imm); | |
4634 | if (res_hi != 0) { | |
4635 | SET_FLAG(F_CF); | |
4636 | SET_FLAG(F_OF); | |
4637 | } else { | |
4638 | CLEAR_FLAG(F_CF); | |
4639 | CLEAR_FLAG(F_OF); | |
4640 | } | |
4641 | *destreg = (u32)res_lo; | |
4642 | } else { | |
4643 | u16 *destreg; | |
4644 | u16 srcval; | |
4645 | u32 res; | |
4646 | ||
4647 | destreg = DECODE_RM_WORD_REGISTER(rh); | |
4648 | DECODE_PRINTF(","); | |
4649 | srcoffset = decode_rm01_address(rl); | |
4650 | srcval = fetch_data_word(srcoffset); | |
4651 | imm = fetch_byte_imm(); | |
4652 | DECODE_PRINTF2(",%d\n", (s32)imm); | |
4653 | TRACE_AND_STEP(); | |
4654 | res = (s16)srcval * (s16)imm; | |
4655 | if (res > 0xFFFF) { | |
4656 | SET_FLAG(F_CF); | |
4657 | SET_FLAG(F_OF); | |
4658 | } else { | |
4659 | CLEAR_FLAG(F_CF); | |
4660 | CLEAR_FLAG(F_OF); | |
4661 | } | |
4662 | *destreg = (u16)res; | |
4663 | } | |
4664 | break; | |
4665 | case 2: | |
4666 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
4667 | u32 *destreg; | |
4668 | u32 srcval; | |
4669 | u32 res_lo,res_hi; | |
4670 | ||
4671 | destreg = DECODE_RM_LONG_REGISTER(rh); | |
4672 | DECODE_PRINTF(","); | |
4673 | srcoffset = decode_rm10_address(rl); | |
4674 | srcval = fetch_data_long(srcoffset); | |
4675 | imm = fetch_byte_imm(); | |
4676 | DECODE_PRINTF2(",%d\n", (s32)imm); | |
4677 | TRACE_AND_STEP(); | |
4678 | imul_long_direct(&res_lo,&res_hi,(s32)srcval,(s32)imm); | |
4679 | if (res_hi != 0) { | |
4680 | SET_FLAG(F_CF); | |
4681 | SET_FLAG(F_OF); | |
4682 | } else { | |
4683 | CLEAR_FLAG(F_CF); | |
4684 | CLEAR_FLAG(F_OF); | |
4685 | } | |
4686 | *destreg = (u32)res_lo; | |
4687 | } else { | |
4688 | u16 *destreg; | |
4689 | u16 srcval; | |
4690 | u32 res; | |
4691 | ||
4692 | destreg = DECODE_RM_WORD_REGISTER(rh); | |
4693 | DECODE_PRINTF(","); | |
4694 | srcoffset = decode_rm10_address(rl); | |
4695 | srcval = fetch_data_word(srcoffset); | |
4696 | imm = fetch_byte_imm(); | |
4697 | DECODE_PRINTF2(",%d\n", (s32)imm); | |
4698 | TRACE_AND_STEP(); | |
4699 | res = (s16)srcval * (s16)imm; | |
4700 | if (res > 0xFFFF) { | |
4701 | SET_FLAG(F_CF); | |
4702 | SET_FLAG(F_OF); | |
4703 | } else { | |
4704 | CLEAR_FLAG(F_CF); | |
4705 | CLEAR_FLAG(F_OF); | |
4706 | } | |
4707 | *destreg = (u16)res; | |
4708 | } | |
4709 | break; | |
4710 | case 3: /* register to register */ | |
4711 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
4712 | u32 *destreg,*srcreg; | |
4713 | u32 res_lo,res_hi; | |
4714 | ||
4715 | destreg = DECODE_RM_LONG_REGISTER(rh); | |
4716 | DECODE_PRINTF(","); | |
4717 | srcreg = DECODE_RM_LONG_REGISTER(rl); | |
4718 | imm = fetch_byte_imm(); | |
4719 | DECODE_PRINTF2(",%d\n", (s32)imm); | |
4720 | TRACE_AND_STEP(); | |
4721 | imul_long_direct(&res_lo,&res_hi,(s32)*srcreg,(s32)imm); | |
4722 | if (res_hi != 0) { | |
4723 | SET_FLAG(F_CF); | |
4724 | SET_FLAG(F_OF); | |
4725 | } else { | |
4726 | CLEAR_FLAG(F_CF); | |
4727 | CLEAR_FLAG(F_OF); | |
4728 | } | |
4729 | *destreg = (u32)res_lo; | |
4730 | } else { | |
4731 | u16 *destreg,*srcreg; | |
4732 | u32 res; | |
4733 | ||
4734 | destreg = DECODE_RM_WORD_REGISTER(rh); | |
4735 | DECODE_PRINTF(","); | |
4736 | srcreg = DECODE_RM_WORD_REGISTER(rl); | |
4737 | imm = fetch_byte_imm(); | |
4738 | DECODE_PRINTF2(",%d\n", (s32)imm); | |
4739 | res = (s16)*srcreg * (s16)imm; | |
4740 | if (res > 0xFFFF) { | |
4741 | SET_FLAG(F_CF); | |
4742 | SET_FLAG(F_OF); | |
4743 | } else { | |
4744 | CLEAR_FLAG(F_CF); | |
4745 | CLEAR_FLAG(F_OF); | |
4746 | } | |
4747 | *destreg = (u16)res; | |
4748 | } | |
4749 | break; | |
4750 | } | |
4751 | DECODE_CLEAR_SEGOVR(); | |
4752 | END_OF_INSTR(); | |
4753 | } | |
4754 | ||
4755 | /**************************************************************************** | |
4756 | REMARKS: | |
4757 | Handles opcode 0x6c | |
4758 | ****************************************************************************/ | |
4759 | static void x86emuOp_ins_byte(u8 X86EMU_UNUSED(op1)) | |
4760 | { | |
4761 | START_OF_INSTR(); | |
4762 | DECODE_PRINTF("INSB\n"); | |
4763 | ins(1); | |
4764 | TRACE_AND_STEP(); | |
4765 | DECODE_CLEAR_SEGOVR(); | |
4766 | END_OF_INSTR(); | |
4767 | } | |
4768 | ||
4769 | /**************************************************************************** | |
4770 | REMARKS: | |
4771 | Handles opcode 0x6d | |
4772 | ****************************************************************************/ | |
4773 | static void x86emuOp_ins_word(u8 X86EMU_UNUSED(op1)) | |
4774 | { | |
4775 | START_OF_INSTR(); | |
4776 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
4777 | DECODE_PRINTF("INSD\n"); | |
4778 | ins(4); | |
4779 | } else { | |
4780 | DECODE_PRINTF("INSW\n"); | |
4781 | ins(2); | |
4782 | } | |
4783 | TRACE_AND_STEP(); | |
4784 | DECODE_CLEAR_SEGOVR(); | |
4785 | END_OF_INSTR(); | |
4786 | } | |
4787 | ||
4788 | /**************************************************************************** | |
4789 | REMARKS: | |
4790 | Handles opcode 0x6e | |
4791 | ****************************************************************************/ | |
4792 | static void x86emuOp_outs_byte(u8 X86EMU_UNUSED(op1)) | |
4793 | { | |
4794 | START_OF_INSTR(); | |
4795 | DECODE_PRINTF("OUTSB\n"); | |
4796 | outs(1); | |
4797 | TRACE_AND_STEP(); | |
4798 | DECODE_CLEAR_SEGOVR(); | |
4799 | END_OF_INSTR(); | |
4800 | } | |
4801 | ||
4802 | /**************************************************************************** | |
4803 | REMARKS: | |
4804 | Handles opcode 0x6f | |
4805 | ****************************************************************************/ | |
4806 | static void x86emuOp_outs_word(u8 X86EMU_UNUSED(op1)) | |
4807 | { | |
4808 | START_OF_INSTR(); | |
4809 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
4810 | DECODE_PRINTF("OUTSD\n"); | |
4811 | outs(4); | |
4812 | } else { | |
4813 | DECODE_PRINTF("OUTSW\n"); | |
4814 | outs(2); | |
4815 | } | |
4816 | TRACE_AND_STEP(); | |
4817 | DECODE_CLEAR_SEGOVR(); | |
4818 | END_OF_INSTR(); | |
4819 | } | |
4820 | ||
4821 | /**************************************************************************** | |
4822 | REMARKS: | |
4823 | Handles opcode 0x70 | |
4824 | ****************************************************************************/ | |
4825 | static void x86emuOp_jump_near_O(u8 X86EMU_UNUSED(op1)) | |
4826 | { | |
4827 | s8 offset; | |
4828 | u16 target; | |
4829 | ||
4830 | /* jump to byte offset if overflow flag is set */ | |
4831 | START_OF_INSTR(); | |
4832 | DECODE_PRINTF("JO\t"); | |
4833 | offset = (s8)fetch_byte_imm(); | |
4834 | target = (u16)(M.x86.R_IP + (s16)offset); | |
4835 | DECODE_PRINTF2("%x\n", target); | |
4836 | TRACE_AND_STEP(); | |
4837 | if (ACCESS_FLAG(F_OF)) | |
4838 | M.x86.R_IP = target; | |
4839 | DECODE_CLEAR_SEGOVR(); | |
4840 | END_OF_INSTR(); | |
4841 | } | |
4842 | ||
4843 | /**************************************************************************** | |
4844 | REMARKS: | |
4845 | Handles opcode 0x71 | |
4846 | ****************************************************************************/ | |
4847 | static void x86emuOp_jump_near_NO(u8 X86EMU_UNUSED(op1)) | |
4848 | { | |
4849 | s8 offset; | |
4850 | u16 target; | |
4851 | ||
4852 | /* jump to byte offset if overflow is not set */ | |
4853 | START_OF_INSTR(); | |
4854 | DECODE_PRINTF("JNO\t"); | |
4855 | offset = (s8)fetch_byte_imm(); | |
4856 | target = (u16)(M.x86.R_IP + (s16)offset); | |
4857 | DECODE_PRINTF2("%x\n", target); | |
4858 | TRACE_AND_STEP(); | |
4859 | if (!ACCESS_FLAG(F_OF)) | |
4860 | M.x86.R_IP = target; | |
4861 | DECODE_CLEAR_SEGOVR(); | |
4862 | END_OF_INSTR(); | |
4863 | } | |
4864 | ||
4865 | /**************************************************************************** | |
4866 | REMARKS: | |
4867 | Handles opcode 0x72 | |
4868 | ****************************************************************************/ | |
4869 | static void x86emuOp_jump_near_B(u8 X86EMU_UNUSED(op1)) | |
4870 | { | |
4871 | s8 offset; | |
4872 | u16 target; | |
4873 | ||
4874 | /* jump to byte offset if carry flag is set. */ | |
4875 | START_OF_INSTR(); | |
4876 | DECODE_PRINTF("JB\t"); | |
4877 | offset = (s8)fetch_byte_imm(); | |
4878 | target = (u16)(M.x86.R_IP + (s16)offset); | |
4879 | DECODE_PRINTF2("%x\n", target); | |
4880 | TRACE_AND_STEP(); | |
4881 | if (ACCESS_FLAG(F_CF)) | |
4882 | M.x86.R_IP = target; | |
4883 | DECODE_CLEAR_SEGOVR(); | |
4884 | END_OF_INSTR(); | |
4885 | } | |
4886 | ||
4887 | /**************************************************************************** | |
4888 | REMARKS: | |
4889 | Handles opcode 0x73 | |
4890 | ****************************************************************************/ | |
4891 | static void x86emuOp_jump_near_NB(u8 X86EMU_UNUSED(op1)) | |
4892 | { | |
4893 | s8 offset; | |
4894 | u16 target; | |
4895 | ||
4896 | /* jump to byte offset if carry flag is clear. */ | |
4897 | START_OF_INSTR(); | |
4898 | DECODE_PRINTF("JNB\t"); | |
4899 | offset = (s8)fetch_byte_imm(); | |
4900 | target = (u16)(M.x86.R_IP + (s16)offset); | |
4901 | DECODE_PRINTF2("%x\n", target); | |
4902 | TRACE_AND_STEP(); | |
4903 | if (!ACCESS_FLAG(F_CF)) | |
4904 | M.x86.R_IP = target; | |
4905 | DECODE_CLEAR_SEGOVR(); | |
4906 | END_OF_INSTR(); | |
4907 | } | |
4908 | ||
4909 | /**************************************************************************** | |
4910 | REMARKS: | |
4911 | Handles opcode 0x74 | |
4912 | ****************************************************************************/ | |
4913 | static void x86emuOp_jump_near_Z(u8 X86EMU_UNUSED(op1)) | |
4914 | { | |
4915 | s8 offset; | |
4916 | u16 target; | |
4917 | ||
4918 | /* jump to byte offset if zero flag is set. */ | |
4919 | START_OF_INSTR(); | |
4920 | DECODE_PRINTF("JZ\t"); | |
4921 | offset = (s8)fetch_byte_imm(); | |
4922 | target = (u16)(M.x86.R_IP + (s16)offset); | |
4923 | DECODE_PRINTF2("%x\n", target); | |
4924 | TRACE_AND_STEP(); | |
4925 | if (ACCESS_FLAG(F_ZF)) | |
4926 | M.x86.R_IP = target; | |
4927 | DECODE_CLEAR_SEGOVR(); | |
4928 | END_OF_INSTR(); | |
4929 | } | |
4930 | ||
4931 | /**************************************************************************** | |
4932 | REMARKS: | |
4933 | Handles opcode 0x75 | |
4934 | ****************************************************************************/ | |
4935 | static void x86emuOp_jump_near_NZ(u8 X86EMU_UNUSED(op1)) | |
4936 | { | |
4937 | s8 offset; | |
4938 | u16 target; | |
4939 | ||
4940 | /* jump to byte offset if zero flag is clear. */ | |
4941 | START_OF_INSTR(); | |
4942 | DECODE_PRINTF("JNZ\t"); | |
4943 | offset = (s8)fetch_byte_imm(); | |
4944 | target = (u16)(M.x86.R_IP + (s16)offset); | |
4945 | DECODE_PRINTF2("%x\n", target); | |
4946 | TRACE_AND_STEP(); | |
4947 | if (!ACCESS_FLAG(F_ZF)) | |
4948 | M.x86.R_IP = target; | |
4949 | DECODE_CLEAR_SEGOVR(); | |
4950 | END_OF_INSTR(); | |
4951 | } | |
4952 | ||
4953 | /**************************************************************************** | |
4954 | REMARKS: | |
4955 | Handles opcode 0x76 | |
4956 | ****************************************************************************/ | |
4957 | static void x86emuOp_jump_near_BE(u8 X86EMU_UNUSED(op1)) | |
4958 | { | |
4959 | s8 offset; | |
4960 | u16 target; | |
4961 | ||
4962 | /* jump to byte offset if carry flag is set or if the zero | |
4963 | flag is set. */ | |
4964 | START_OF_INSTR(); | |
4965 | DECODE_PRINTF("JBE\t"); | |
4966 | offset = (s8)fetch_byte_imm(); | |
4967 | target = (u16)(M.x86.R_IP + (s16)offset); | |
4968 | DECODE_PRINTF2("%x\n", target); | |
4969 | TRACE_AND_STEP(); | |
4970 | if (ACCESS_FLAG(F_CF) || ACCESS_FLAG(F_ZF)) | |
4971 | M.x86.R_IP = target; | |
4972 | DECODE_CLEAR_SEGOVR(); | |
4973 | END_OF_INSTR(); | |
4974 | } | |
4975 | ||
4976 | /**************************************************************************** | |
4977 | REMARKS: | |
4978 | Handles opcode 0x77 | |
4979 | ****************************************************************************/ | |
4980 | static void x86emuOp_jump_near_NBE(u8 X86EMU_UNUSED(op1)) | |
4981 | { | |
4982 | s8 offset; | |
4983 | u16 target; | |
4984 | ||
4985 | /* jump to byte offset if carry flag is clear and if the zero | |
4986 | flag is clear */ | |
4987 | START_OF_INSTR(); | |
4988 | DECODE_PRINTF("JNBE\t"); | |
4989 | offset = (s8)fetch_byte_imm(); | |
4990 | target = (u16)(M.x86.R_IP + (s16)offset); | |
4991 | DECODE_PRINTF2("%x\n", target); | |
4992 | TRACE_AND_STEP(); | |
4993 | if (!(ACCESS_FLAG(F_CF) || ACCESS_FLAG(F_ZF))) | |
4994 | M.x86.R_IP = target; | |
4995 | DECODE_CLEAR_SEGOVR(); | |
4996 | END_OF_INSTR(); | |
4997 | } | |
4998 | ||
4999 | /**************************************************************************** | |
5000 | REMARKS: | |
5001 | Handles opcode 0x78 | |
5002 | ****************************************************************************/ | |
5003 | static void x86emuOp_jump_near_S(u8 X86EMU_UNUSED(op1)) | |
5004 | { | |
5005 | s8 offset; | |
5006 | u16 target; | |
5007 | ||
5008 | /* jump to byte offset if sign flag is set */ | |
5009 | START_OF_INSTR(); | |
5010 | DECODE_PRINTF("JS\t"); | |
5011 | offset = (s8)fetch_byte_imm(); | |
5012 | target = (u16)(M.x86.R_IP + (s16)offset); | |
5013 | DECODE_PRINTF2("%x\n", target); | |
5014 | TRACE_AND_STEP(); | |
5015 | if (ACCESS_FLAG(F_SF)) | |
5016 | M.x86.R_IP = target; | |
5017 | DECODE_CLEAR_SEGOVR(); | |
5018 | END_OF_INSTR(); | |
5019 | } | |
5020 | ||
5021 | /**************************************************************************** | |
5022 | REMARKS: | |
5023 | Handles opcode 0x79 | |
5024 | ****************************************************************************/ | |
5025 | static void x86emuOp_jump_near_NS(u8 X86EMU_UNUSED(op1)) | |
5026 | { | |
5027 | s8 offset; | |
5028 | u16 target; | |
5029 | ||
5030 | /* jump to byte offset if sign flag is clear */ | |
5031 | START_OF_INSTR(); | |
5032 | DECODE_PRINTF("JNS\t"); | |
5033 | offset = (s8)fetch_byte_imm(); | |
5034 | target = (u16)(M.x86.R_IP + (s16)offset); | |
5035 | DECODE_PRINTF2("%x\n", target); | |
5036 | TRACE_AND_STEP(); | |
5037 | if (!ACCESS_FLAG(F_SF)) | |
5038 | M.x86.R_IP = target; | |
5039 | DECODE_CLEAR_SEGOVR(); | |
5040 | END_OF_INSTR(); | |
5041 | } | |
5042 | ||
5043 | /**************************************************************************** | |
5044 | REMARKS: | |
5045 | Handles opcode 0x7a | |
5046 | ****************************************************************************/ | |
5047 | static void x86emuOp_jump_near_P(u8 X86EMU_UNUSED(op1)) | |
5048 | { | |
5049 | s8 offset; | |
5050 | u16 target; | |
5051 | ||
5052 | /* jump to byte offset if parity flag is set (even parity) */ | |
5053 | START_OF_INSTR(); | |
5054 | DECODE_PRINTF("JP\t"); | |
5055 | offset = (s8)fetch_byte_imm(); | |
5056 | target = (u16)(M.x86.R_IP + (s16)offset); | |
5057 | DECODE_PRINTF2("%x\n", target); | |
5058 | TRACE_AND_STEP(); | |
5059 | if (ACCESS_FLAG(F_PF)) | |
5060 | M.x86.R_IP = target; | |
5061 | DECODE_CLEAR_SEGOVR(); | |
5062 | END_OF_INSTR(); | |
5063 | } | |
5064 | ||
5065 | /**************************************************************************** | |
5066 | REMARKS: | |
5067 | Handles opcode 0x7b | |
5068 | ****************************************************************************/ | |
5069 | static void x86emuOp_jump_near_NP(u8 X86EMU_UNUSED(op1)) | |
5070 | { | |
5071 | s8 offset; | |
5072 | u16 target; | |
5073 | ||
5074 | /* jump to byte offset if parity flag is clear (odd parity) */ | |
5075 | START_OF_INSTR(); | |
5076 | DECODE_PRINTF("JNP\t"); | |
5077 | offset = (s8)fetch_byte_imm(); | |
5078 | target = (u16)(M.x86.R_IP + (s16)offset); | |
5079 | DECODE_PRINTF2("%x\n", target); | |
5080 | TRACE_AND_STEP(); | |
5081 | if (!ACCESS_FLAG(F_PF)) | |
5082 | M.x86.R_IP = target; | |
5083 | DECODE_CLEAR_SEGOVR(); | |
5084 | END_OF_INSTR(); | |
5085 | } | |
5086 | ||
5087 | /**************************************************************************** | |
5088 | REMARKS: | |
5089 | Handles opcode 0x7c | |
5090 | ****************************************************************************/ | |
5091 | static void x86emuOp_jump_near_L(u8 X86EMU_UNUSED(op1)) | |
5092 | { | |
5093 | s8 offset; | |
5094 | u16 target; | |
5095 | int sf, of; | |
5096 | ||
5097 | /* jump to byte offset if sign flag not equal to overflow flag. */ | |
5098 | START_OF_INSTR(); | |
5099 | DECODE_PRINTF("JL\t"); | |
5100 | offset = (s8)fetch_byte_imm(); | |
5101 | target = (u16)(M.x86.R_IP + (s16)offset); | |
5102 | DECODE_PRINTF2("%x\n", target); | |
5103 | TRACE_AND_STEP(); | |
5104 | sf = ACCESS_FLAG(F_SF) != 0; | |
5105 | of = ACCESS_FLAG(F_OF) != 0; | |
5106 | if (sf ^ of) | |
5107 | M.x86.R_IP = target; | |
5108 | DECODE_CLEAR_SEGOVR(); | |
5109 | END_OF_INSTR(); | |
5110 | } | |
5111 | ||
5112 | /**************************************************************************** | |
5113 | REMARKS: | |
5114 | Handles opcode 0x7d | |
5115 | ****************************************************************************/ | |
5116 | static void x86emuOp_jump_near_NL(u8 X86EMU_UNUSED(op1)) | |
5117 | { | |
5118 | s8 offset; | |
5119 | u16 target; | |
5120 | int sf, of; | |
5121 | ||
5122 | /* jump to byte offset if sign flag not equal to overflow flag. */ | |
5123 | START_OF_INSTR(); | |
5124 | DECODE_PRINTF("JNL\t"); | |
5125 | offset = (s8)fetch_byte_imm(); | |
5126 | target = (u16)(M.x86.R_IP + (s16)offset); | |
5127 | DECODE_PRINTF2("%x\n", target); | |
5128 | TRACE_AND_STEP(); | |
5129 | sf = ACCESS_FLAG(F_SF) != 0; | |
5130 | of = ACCESS_FLAG(F_OF) != 0; | |
5131 | /* note: inverse of above, but using == instead of xor. */ | |
5132 | if (sf == of) | |
5133 | M.x86.R_IP = target; | |
5134 | DECODE_CLEAR_SEGOVR(); | |
5135 | END_OF_INSTR(); | |
5136 | } | |
5137 | ||
5138 | /**************************************************************************** | |
5139 | REMARKS: | |
5140 | Handles opcode 0x7e | |
5141 | ****************************************************************************/ | |
5142 | static void x86emuOp_jump_near_LE(u8 X86EMU_UNUSED(op1)) | |
5143 | { | |
5144 | s8 offset; | |
5145 | u16 target; | |
5146 | int sf, of; | |
5147 | ||
5148 | /* jump to byte offset if sign flag not equal to overflow flag | |
5149 | or the zero flag is set */ | |
5150 | START_OF_INSTR(); | |
5151 | DECODE_PRINTF("JLE\t"); | |
5152 | offset = (s8)fetch_byte_imm(); | |
5153 | target = (u16)(M.x86.R_IP + (s16)offset); | |
5154 | DECODE_PRINTF2("%x\n", target); | |
5155 | TRACE_AND_STEP(); | |
5156 | sf = ACCESS_FLAG(F_SF) != 0; | |
5157 | of = ACCESS_FLAG(F_OF) != 0; | |
5158 | if ((sf ^ of) || ACCESS_FLAG(F_ZF)) | |
5159 | M.x86.R_IP = target; | |
5160 | DECODE_CLEAR_SEGOVR(); | |
5161 | END_OF_INSTR(); | |
5162 | } | |
5163 | ||
5164 | /**************************************************************************** | |
5165 | REMARKS: | |
5166 | Handles opcode 0x7f | |
5167 | ****************************************************************************/ | |
5168 | static void x86emuOp_jump_near_NLE(u8 X86EMU_UNUSED(op1)) | |
5169 | { | |
5170 | s8 offset; | |
5171 | u16 target; | |
5172 | int sf, of; | |
5173 | ||
5174 | /* jump to byte offset if sign flag equal to overflow flag. | |
5175 | and the zero flag is clear */ | |
5176 | START_OF_INSTR(); | |
5177 | DECODE_PRINTF("JNLE\t"); | |
5178 | offset = (s8)fetch_byte_imm(); | |
5179 | target = (u16)(M.x86.R_IP + (s16)offset); | |
5180 | DECODE_PRINTF2("%x\n", target); | |
5181 | TRACE_AND_STEP(); | |
5182 | sf = ACCESS_FLAG(F_SF) != 0; | |
5183 | of = ACCESS_FLAG(F_OF) != 0; | |
5184 | if ((sf == of) && !ACCESS_FLAG(F_ZF)) | |
5185 | M.x86.R_IP = target; | |
5186 | DECODE_CLEAR_SEGOVR(); | |
5187 | END_OF_INSTR(); | |
5188 | } | |
5189 | ||
5190 | static u8 (*opc80_byte_operation[])(u8 d, u8 s) = | |
5191 | { | |
5192 | add_byte, /* 00 */ | |
5193 | or_byte, /* 01 */ | |
5194 | adc_byte, /* 02 */ | |
5195 | sbb_byte, /* 03 */ | |
5196 | and_byte, /* 04 */ | |
5197 | sub_byte, /* 05 */ | |
5198 | xor_byte, /* 06 */ | |
5199 | cmp_byte, /* 07 */ | |
5200 | }; | |
5201 | ||
5202 | /**************************************************************************** | |
5203 | REMARKS: | |
5204 | Handles opcode 0x80 | |
5205 | ****************************************************************************/ | |
5206 | static void x86emuOp_opc80_byte_RM_IMM(u8 X86EMU_UNUSED(op1)) | |
5207 | { | |
5208 | int mod, rl, rh; | |
5209 | u8 *destreg; | |
5210 | uint destoffset; | |
5211 | u8 imm; | |
5212 | u8 destval; | |
5213 | ||
5214 | /* | |
5215 | * Weirdo special case instruction format. Part of the opcode | |
5216 | * held below in "RH". Doubly nested case would result, except | |
5217 | * that the decoded instruction | |
5218 | */ | |
5219 | START_OF_INSTR(); | |
5220 | FETCH_DECODE_MODRM(mod, rh, rl); | |
5221 | #ifdef DEBUG | |
5222 | if (DEBUG_DECODE()) { | |
5223 | /* XXX DECODE_PRINTF may be changed to something more | |
5224 | general, so that it is important to leave the strings | |
5225 | in the same format, even though the result is that the | |
5226 | above test is done twice. */ | |
5227 | ||
5228 | switch (rh) { | |
5229 | case 0: | |
5230 | DECODE_PRINTF("ADD\t"); | |
5231 | break; | |
5232 | case 1: | |
5233 | DECODE_PRINTF("OR\t"); | |
5234 | break; | |
5235 | case 2: | |
5236 | DECODE_PRINTF("ADC\t"); | |
5237 | break; | |
5238 | case 3: | |
5239 | DECODE_PRINTF("SBB\t"); | |
5240 | break; | |
5241 | case 4: | |
5242 | DECODE_PRINTF("AND\t"); | |
5243 | break; | |
5244 | case 5: | |
5245 | DECODE_PRINTF("SUB\t"); | |
5246 | break; | |
5247 | case 6: | |
5248 | DECODE_PRINTF("XOR\t"); | |
5249 | break; | |
5250 | case 7: | |
5251 | DECODE_PRINTF("CMP\t"); | |
5252 | break; | |
5253 | } | |
5254 | } | |
5255 | #endif | |
5256 | /* know operation, decode the mod byte to find the addressing | |
5257 | mode. */ | |
5258 | switch (mod) { | |
5259 | case 0: | |
5260 | DECODE_PRINTF("BYTE PTR "); | |
5261 | destoffset = decode_rm00_address(rl); | |
5262 | DECODE_PRINTF(","); | |
5263 | destval = fetch_data_byte(destoffset); | |
5264 | imm = fetch_byte_imm(); | |
5265 | DECODE_PRINTF2("%x\n", imm); | |
5266 | TRACE_AND_STEP(); | |
5267 | destval = (*opc80_byte_operation[rh]) (destval, imm); | |
5268 | if (rh != 7) | |
5269 | store_data_byte(destoffset, destval); | |
5270 | break; | |
5271 | case 1: | |
5272 | DECODE_PRINTF("BYTE PTR "); | |
5273 | destoffset = decode_rm01_address(rl); | |
5274 | DECODE_PRINTF(","); | |
5275 | destval = fetch_data_byte(destoffset); | |
5276 | imm = fetch_byte_imm(); | |
5277 | DECODE_PRINTF2("%x\n", imm); | |
5278 | TRACE_AND_STEP(); | |
5279 | destval = (*opc80_byte_operation[rh]) (destval, imm); | |
5280 | if (rh != 7) | |
5281 | store_data_byte(destoffset, destval); | |
5282 | break; | |
5283 | case 2: | |
5284 | DECODE_PRINTF("BYTE PTR "); | |
5285 | destoffset = decode_rm10_address(rl); | |
5286 | DECODE_PRINTF(","); | |
5287 | destval = fetch_data_byte(destoffset); | |
5288 | imm = fetch_byte_imm(); | |
5289 | DECODE_PRINTF2("%x\n", imm); | |
5290 | TRACE_AND_STEP(); | |
5291 | destval = (*opc80_byte_operation[rh]) (destval, imm); | |
5292 | if (rh != 7) | |
5293 | store_data_byte(destoffset, destval); | |
5294 | break; | |
5295 | case 3: /* register to register */ | |
5296 | destreg = DECODE_RM_BYTE_REGISTER(rl); | |
5297 | DECODE_PRINTF(","); | |
5298 | imm = fetch_byte_imm(); | |
5299 | DECODE_PRINTF2("%x\n", imm); | |
5300 | TRACE_AND_STEP(); | |
5301 | destval = (*opc80_byte_operation[rh]) (*destreg, imm); | |
5302 | if (rh != 7) | |
5303 | *destreg = destval; | |
5304 | break; | |
5305 | } | |
5306 | DECODE_CLEAR_SEGOVR(); | |
5307 | END_OF_INSTR(); | |
5308 | } | |
5309 | ||
5310 | static u16 (*opc81_word_operation[])(u16 d, u16 s) = | |
5311 | { | |
5312 | add_word, /*00 */ | |
5313 | or_word, /*01 */ | |
5314 | adc_word, /*02 */ | |
5315 | sbb_word, /*03 */ | |
5316 | and_word, /*04 */ | |
5317 | sub_word, /*05 */ | |
5318 | xor_word, /*06 */ | |
5319 | cmp_word, /*07 */ | |
5320 | }; | |
5321 | ||
5322 | static u32 (*opc81_long_operation[])(u32 d, u32 s) = | |
5323 | { | |
5324 | add_long, /*00 */ | |
5325 | or_long, /*01 */ | |
5326 | adc_long, /*02 */ | |
5327 | sbb_long, /*03 */ | |
5328 | and_long, /*04 */ | |
5329 | sub_long, /*05 */ | |
5330 | xor_long, /*06 */ | |
5331 | cmp_long, /*07 */ | |
5332 | }; | |
5333 | ||
5334 | /**************************************************************************** | |
5335 | REMARKS: | |
5336 | Handles opcode 0x81 | |
5337 | ****************************************************************************/ | |
5338 | static void x86emuOp_opc81_word_RM_IMM(u8 X86EMU_UNUSED(op1)) | |
5339 | { | |
5340 | int mod, rl, rh; | |
5341 | uint destoffset; | |
5342 | ||
5343 | /* | |
5344 | * Weirdo special case instruction format. Part of the opcode | |
5345 | * held below in "RH". Doubly nested case would result, except | |
5346 | * that the decoded instruction | |
5347 | */ | |
5348 | START_OF_INSTR(); | |
5349 | FETCH_DECODE_MODRM(mod, rh, rl); | |
5350 | #ifdef DEBUG | |
5351 | if (DEBUG_DECODE()) { | |
5352 | /* XXX DECODE_PRINTF may be changed to something more | |
5353 | general, so that it is important to leave the strings | |
5354 | in the same format, even though the result is that the | |
5355 | above test is done twice. */ | |
5356 | ||
5357 | switch (rh) { | |
5358 | case 0: | |
5359 | DECODE_PRINTF("ADD\t"); | |
5360 | break; | |
5361 | case 1: | |
5362 | DECODE_PRINTF("OR\t"); | |
5363 | break; | |
5364 | case 2: | |
5365 | DECODE_PRINTF("ADC\t"); | |
5366 | break; | |
5367 | case 3: | |
5368 | DECODE_PRINTF("SBB\t"); | |
5369 | break; | |
5370 | case 4: | |
5371 | DECODE_PRINTF("AND\t"); | |
5372 | break; | |
5373 | case 5: | |
5374 | DECODE_PRINTF("SUB\t"); | |
5375 | break; | |
5376 | case 6: | |
5377 | DECODE_PRINTF("XOR\t"); | |
5378 | break; | |
5379 | case 7: | |
5380 | DECODE_PRINTF("CMP\t"); | |
5381 | break; | |
5382 | } | |
5383 | } | |
5384 | #endif | |
5385 | /* | |
5386 | * Know operation, decode the mod byte to find the addressing | |
5387 | * mode. | |
5388 | */ | |
5389 | switch (mod) { | |
5390 | case 0: | |
5391 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
5392 | u32 destval,imm; | |
5393 | ||
5394 | DECODE_PRINTF("DWORD PTR "); | |
5395 | destoffset = decode_rm00_address(rl); | |
5396 | DECODE_PRINTF(","); | |
5397 | destval = fetch_data_long(destoffset); | |
5398 | imm = fetch_long_imm(); | |
5399 | DECODE_PRINTF2("%x\n", imm); | |
5400 | TRACE_AND_STEP(); | |
5401 | destval = (*opc81_long_operation[rh]) (destval, imm); | |
5402 | if (rh != 7) | |
5403 | store_data_long(destoffset, destval); | |
5404 | } else { | |
5405 | u16 destval,imm; | |
5406 | ||
5407 | DECODE_PRINTF("WORD PTR "); | |
5408 | destoffset = decode_rm00_address(rl); | |
5409 | DECODE_PRINTF(","); | |
5410 | destval = fetch_data_word(destoffset); | |
5411 | imm = fetch_word_imm(); | |
5412 | DECODE_PRINTF2("%x\n", imm); | |
5413 | TRACE_AND_STEP(); | |
5414 | destval = (*opc81_word_operation[rh]) (destval, imm); | |
5415 | if (rh != 7) | |
5416 | store_data_word(destoffset, destval); | |
5417 | } | |
5418 | break; | |
5419 | case 1: | |
5420 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
5421 | u32 destval,imm; | |
5422 | ||
5423 | DECODE_PRINTF("DWORD PTR "); | |
5424 | destoffset = decode_rm01_address(rl); | |
5425 | DECODE_PRINTF(","); | |
5426 | destval = fetch_data_long(destoffset); | |
5427 | imm = fetch_long_imm(); | |
5428 | DECODE_PRINTF2("%x\n", imm); | |
5429 | TRACE_AND_STEP(); | |
5430 | destval = (*opc81_long_operation[rh]) (destval, imm); | |
5431 | if (rh != 7) | |
5432 | store_data_long(destoffset, destval); | |
5433 | } else { | |
5434 | u16 destval,imm; | |
5435 | ||
5436 | DECODE_PRINTF("WORD PTR "); | |
5437 | destoffset = decode_rm01_address(rl); | |
5438 | DECODE_PRINTF(","); | |
5439 | destval = fetch_data_word(destoffset); | |
5440 | imm = fetch_word_imm(); | |
5441 | DECODE_PRINTF2("%x\n", imm); | |
5442 | TRACE_AND_STEP(); | |
5443 | destval = (*opc81_word_operation[rh]) (destval, imm); | |
5444 | if (rh != 7) | |
5445 | store_data_word(destoffset, destval); | |
5446 | } | |
5447 | break; | |
5448 | case 2: | |
5449 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
5450 | u32 destval,imm; | |
5451 | ||
5452 | DECODE_PRINTF("DWORD PTR "); | |
5453 | destoffset = decode_rm10_address(rl); | |
5454 | DECODE_PRINTF(","); | |
5455 | destval = fetch_data_long(destoffset); | |
5456 | imm = fetch_long_imm(); | |
5457 | DECODE_PRINTF2("%x\n", imm); | |
5458 | TRACE_AND_STEP(); | |
5459 | destval = (*opc81_long_operation[rh]) (destval, imm); | |
5460 | if (rh != 7) | |
5461 | store_data_long(destoffset, destval); | |
5462 | } else { | |
5463 | u16 destval,imm; | |
5464 | ||
5465 | DECODE_PRINTF("WORD PTR "); | |
5466 | destoffset = decode_rm10_address(rl); | |
5467 | DECODE_PRINTF(","); | |
5468 | destval = fetch_data_word(destoffset); | |
5469 | imm = fetch_word_imm(); | |
5470 | DECODE_PRINTF2("%x\n", imm); | |
5471 | TRACE_AND_STEP(); | |
5472 | destval = (*opc81_word_operation[rh]) (destval, imm); | |
5473 | if (rh != 7) | |
5474 | store_data_word(destoffset, destval); | |
5475 | } | |
5476 | break; | |
5477 | case 3: /* register to register */ | |
5478 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
5479 | u32 *destreg; | |
5480 | u32 destval,imm; | |
5481 | ||
5482 | destreg = DECODE_RM_LONG_REGISTER(rl); | |
5483 | DECODE_PRINTF(","); | |
5484 | imm = fetch_long_imm(); | |
5485 | DECODE_PRINTF2("%x\n", imm); | |
5486 | TRACE_AND_STEP(); | |
5487 | destval = (*opc81_long_operation[rh]) (*destreg, imm); | |
5488 | if (rh != 7) | |
5489 | *destreg = destval; | |
5490 | } else { | |
5491 | u16 *destreg; | |
5492 | u16 destval,imm; | |
5493 | ||
5494 | destreg = DECODE_RM_WORD_REGISTER(rl); | |
5495 | DECODE_PRINTF(","); | |
5496 | imm = fetch_word_imm(); | |
5497 | DECODE_PRINTF2("%x\n", imm); | |
5498 | TRACE_AND_STEP(); | |
5499 | destval = (*opc81_word_operation[rh]) (*destreg, imm); | |
5500 | if (rh != 7) | |
5501 | *destreg = destval; | |
5502 | } | |
5503 | break; | |
5504 | } | |
5505 | DECODE_CLEAR_SEGOVR(); | |
5506 | END_OF_INSTR(); | |
5507 | } | |
5508 | ||
5509 | static u8 (*opc82_byte_operation[])(u8 s, u8 d) = | |
5510 | { | |
5511 | add_byte, /*00 */ | |
5512 | or_byte, /*01 *//*YYY UNUSED ???? */ | |
5513 | adc_byte, /*02 */ | |
5514 | sbb_byte, /*03 */ | |
5515 | and_byte, /*04 *//*YYY UNUSED ???? */ | |
5516 | sub_byte, /*05 */ | |
5517 | xor_byte, /*06 *//*YYY UNUSED ???? */ | |
5518 | cmp_byte, /*07 */ | |
5519 | }; | |
5520 | ||
5521 | /**************************************************************************** | |
5522 | REMARKS: | |
5523 | Handles opcode 0x82 | |
5524 | ****************************************************************************/ | |
5525 | static void x86emuOp_opc82_byte_RM_IMM(u8 X86EMU_UNUSED(op1)) | |
5526 | { | |
5527 | int mod, rl, rh; | |
5528 | u8 *destreg; | |
5529 | uint destoffset; | |
5530 | u8 imm; | |
5531 | u8 destval; | |
5532 | ||
5533 | /* | |
5534 | * Weirdo special case instruction format. Part of the opcode | |
5535 | * held below in "RH". Doubly nested case would result, except | |
5536 | * that the decoded instruction Similar to opcode 81, except that | |
5537 | * the immediate byte is sign extended to a word length. | |
5538 | */ | |
5539 | START_OF_INSTR(); | |
5540 | FETCH_DECODE_MODRM(mod, rh, rl); | |
5541 | #ifdef DEBUG | |
5542 | if (DEBUG_DECODE()) { | |
5543 | /* XXX DECODE_PRINTF may be changed to something more | |
5544 | general, so that it is important to leave the strings | |
5545 | in the same format, even though the result is that the | |
5546 | above test is done twice. */ | |
5547 | switch (rh) { | |
5548 | case 0: | |
5549 | DECODE_PRINTF("ADD\t"); | |
5550 | break; | |
5551 | case 1: | |
5552 | DECODE_PRINTF("OR\t"); | |
5553 | break; | |
5554 | case 2: | |
5555 | DECODE_PRINTF("ADC\t"); | |
5556 | break; | |
5557 | case 3: | |
5558 | DECODE_PRINTF("SBB\t"); | |
5559 | break; | |
5560 | case 4: | |
5561 | DECODE_PRINTF("AND\t"); | |
5562 | break; | |
5563 | case 5: | |
5564 | DECODE_PRINTF("SUB\t"); | |
5565 | break; | |
5566 | case 6: | |
5567 | DECODE_PRINTF("XOR\t"); | |
5568 | break; | |
5569 | case 7: | |
5570 | DECODE_PRINTF("CMP\t"); | |
5571 | break; | |
5572 | } | |
5573 | } | |
5574 | #endif | |
5575 | /* know operation, decode the mod byte to find the addressing | |
5576 | mode. */ | |
5577 | switch (mod) { | |
5578 | case 0: | |
5579 | DECODE_PRINTF("BYTE PTR "); | |
5580 | destoffset = decode_rm00_address(rl); | |
5581 | destval = fetch_data_byte(destoffset); | |
5582 | imm = fetch_byte_imm(); | |
5583 | DECODE_PRINTF2(",%x\n", imm); | |
5584 | TRACE_AND_STEP(); | |
5585 | destval = (*opc82_byte_operation[rh]) (destval, imm); | |
5586 | if (rh != 7) | |
5587 | store_data_byte(destoffset, destval); | |
5588 | break; | |
5589 | case 1: | |
5590 | DECODE_PRINTF("BYTE PTR "); | |
5591 | destoffset = decode_rm01_address(rl); | |
5592 | destval = fetch_data_byte(destoffset); | |
5593 | imm = fetch_byte_imm(); | |
5594 | DECODE_PRINTF2(",%x\n", imm); | |
5595 | TRACE_AND_STEP(); | |
5596 | destval = (*opc82_byte_operation[rh]) (destval, imm); | |
5597 | if (rh != 7) | |
5598 | store_data_byte(destoffset, destval); | |
5599 | break; | |
5600 | case 2: | |
5601 | DECODE_PRINTF("BYTE PTR "); | |
5602 | destoffset = decode_rm10_address(rl); | |
5603 | destval = fetch_data_byte(destoffset); | |
5604 | imm = fetch_byte_imm(); | |
5605 | DECODE_PRINTF2(",%x\n", imm); | |
5606 | TRACE_AND_STEP(); | |
5607 | destval = (*opc82_byte_operation[rh]) (destval, imm); | |
5608 | if (rh != 7) | |
5609 | store_data_byte(destoffset, destval); | |
5610 | break; | |
5611 | case 3: /* register to register */ | |
5612 | destreg = DECODE_RM_BYTE_REGISTER(rl); | |
5613 | imm = fetch_byte_imm(); | |
5614 | DECODE_PRINTF2(",%x\n", imm); | |
5615 | TRACE_AND_STEP(); | |
5616 | destval = (*opc82_byte_operation[rh]) (*destreg, imm); | |
5617 | if (rh != 7) | |
5618 | *destreg = destval; | |
5619 | break; | |
5620 | } | |
5621 | DECODE_CLEAR_SEGOVR(); | |
5622 | END_OF_INSTR(); | |
5623 | } | |
5624 | ||
5625 | static u16 (*opc83_word_operation[])(u16 s, u16 d) = | |
5626 | { | |
5627 | add_word, /*00 */ | |
5628 | or_word, /*01 *//*YYY UNUSED ???? */ | |
5629 | adc_word, /*02 */ | |
5630 | sbb_word, /*03 */ | |
5631 | and_word, /*04 *//*YYY UNUSED ???? */ | |
5632 | sub_word, /*05 */ | |
5633 | xor_word, /*06 *//*YYY UNUSED ???? */ | |
5634 | cmp_word, /*07 */ | |
5635 | }; | |
5636 | ||
5637 | static u32 (*opc83_long_operation[])(u32 s, u32 d) = | |
5638 | { | |
5639 | add_long, /*00 */ | |
5640 | or_long, /*01 *//*YYY UNUSED ???? */ | |
5641 | adc_long, /*02 */ | |
5642 | sbb_long, /*03 */ | |
5643 | and_long, /*04 *//*YYY UNUSED ???? */ | |
5644 | sub_long, /*05 */ | |
5645 | xor_long, /*06 *//*YYY UNUSED ???? */ | |
5646 | cmp_long, /*07 */ | |
5647 | }; | |
5648 | ||
5649 | /**************************************************************************** | |
5650 | REMARKS: | |
5651 | Handles opcode 0x83 | |
5652 | ****************************************************************************/ | |
5653 | static void x86emuOp_opc83_word_RM_IMM(u8 X86EMU_UNUSED(op1)) | |
5654 | { | |
5655 | int mod, rl, rh; | |
5656 | uint destoffset; | |
5657 | ||
5658 | /* | |
5659 | * Weirdo special case instruction format. Part of the opcode | |
5660 | * held below in "RH". Doubly nested case would result, except | |
5661 | * that the decoded instruction Similar to opcode 81, except that | |
5662 | * the immediate byte is sign extended to a word length. | |
5663 | */ | |
5664 | START_OF_INSTR(); | |
5665 | FETCH_DECODE_MODRM(mod, rh, rl); | |
5666 | #ifdef DEBUG | |
5667 | if (DEBUG_DECODE()) { | |
5668 | /* XXX DECODE_PRINTF may be changed to something more | |
5669 | general, so that it is important to leave the strings | |
5670 | in the same format, even though the result is that the | |
5671 | above test is done twice. */ | |
5672 | switch (rh) { | |
5673 | case 0: | |
5674 | DECODE_PRINTF("ADD\t"); | |
5675 | break; | |
5676 | case 1: | |
5677 | DECODE_PRINTF("OR\t"); | |
5678 | break; | |
5679 | case 2: | |
5680 | DECODE_PRINTF("ADC\t"); | |
5681 | break; | |
5682 | case 3: | |
5683 | DECODE_PRINTF("SBB\t"); | |
5684 | break; | |
5685 | case 4: | |
5686 | DECODE_PRINTF("AND\t"); | |
5687 | break; | |
5688 | case 5: | |
5689 | DECODE_PRINTF("SUB\t"); | |
5690 | break; | |
5691 | case 6: | |
5692 | DECODE_PRINTF("XOR\t"); | |
5693 | break; | |
5694 | case 7: | |
5695 | DECODE_PRINTF("CMP\t"); | |
5696 | break; | |
5697 | } | |
5698 | } | |
5699 | #endif | |
5700 | /* know operation, decode the mod byte to find the addressing | |
5701 | mode. */ | |
5702 | switch (mod) { | |
5703 | case 0: | |
5704 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
5705 | u32 destval,imm; | |
5706 | ||
5707 | DECODE_PRINTF("DWORD PTR "); | |
5708 | destoffset = decode_rm00_address(rl); | |
5709 | destval = fetch_data_long(destoffset); | |
5710 | imm = (s8) fetch_byte_imm(); | |
5711 | DECODE_PRINTF2(",%x\n", imm); | |
5712 | TRACE_AND_STEP(); | |
5713 | destval = (*opc83_long_operation[rh]) (destval, imm); | |
5714 | if (rh != 7) | |
5715 | store_data_long(destoffset, destval); | |
5716 | } else { | |
5717 | u16 destval,imm; | |
5718 | ||
5719 | DECODE_PRINTF("WORD PTR "); | |
5720 | destoffset = decode_rm00_address(rl); | |
5721 | destval = fetch_data_word(destoffset); | |
5722 | imm = (s8) fetch_byte_imm(); | |
5723 | DECODE_PRINTF2(",%x\n", imm); | |
5724 | TRACE_AND_STEP(); | |
5725 | destval = (*opc83_word_operation[rh]) (destval, imm); | |
5726 | if (rh != 7) | |
5727 | store_data_word(destoffset, destval); | |
5728 | } | |
5729 | break; | |
5730 | case 1: | |
5731 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
5732 | u32 destval,imm; | |
5733 | ||
5734 | DECODE_PRINTF("DWORD PTR "); | |
5735 | destoffset = decode_rm01_address(rl); | |
5736 | destval = fetch_data_long(destoffset); | |
5737 | imm = (s8) fetch_byte_imm(); | |
5738 | DECODE_PRINTF2(",%x\n", imm); | |
5739 | TRACE_AND_STEP(); | |
5740 | destval = (*opc83_long_operation[rh]) (destval, imm); | |
5741 | if (rh != 7) | |
5742 | store_data_long(destoffset, destval); | |
5743 | } else { | |
5744 | u16 destval,imm; | |
5745 | ||
5746 | DECODE_PRINTF("WORD PTR "); | |
5747 | destoffset = decode_rm01_address(rl); | |
5748 | destval = fetch_data_word(destoffset); | |
5749 | imm = (s8) fetch_byte_imm(); | |
5750 | DECODE_PRINTF2(",%x\n", imm); | |
5751 | TRACE_AND_STEP(); | |
5752 | destval = (*opc83_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 | destval = fetch_data_long(destoffset); | |
5764 | imm = (s8) fetch_byte_imm(); | |
5765 | DECODE_PRINTF2(",%x\n", imm); | |
5766 | TRACE_AND_STEP(); | |
5767 | destval = (*opc83_long_operation[rh]) (destval, imm); | |
5768 | if (rh != 7) | |
5769 | store_data_long(destoffset, destval); | |
5770 | } else { | |
5771 | u16 destval,imm; | |
5772 | ||
5773 | DECODE_PRINTF("WORD PTR "); | |
5774 | destoffset = decode_rm10_address(rl); | |
5775 | destval = fetch_data_word(destoffset); | |
5776 | imm = (s8) fetch_byte_imm(); | |
5777 | DECODE_PRINTF2(",%x\n", imm); | |
5778 | TRACE_AND_STEP(); | |
5779 | destval = (*opc83_word_operation[rh]) (destval, imm); | |
5780 | if (rh != 7) | |
5781 | store_data_word(destoffset, destval); | |
5782 | } | |
5783 | break; | |
5784 | case 3: /* register to register */ | |
5785 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
5786 | u32 *destreg; | |
5787 | u32 destval,imm; | |
5788 | ||
5789 | destreg = DECODE_RM_LONG_REGISTER(rl); | |
5790 | imm = (s8) fetch_byte_imm(); | |
5791 | DECODE_PRINTF2(",%x\n", imm); | |
5792 | TRACE_AND_STEP(); | |
5793 | destval = (*opc83_long_operation[rh]) (*destreg, imm); | |
5794 | if (rh != 7) | |
5795 | *destreg = destval; | |
5796 | } else { | |
5797 | u16 *destreg; | |
5798 | u16 destval,imm; | |
5799 | ||
5800 | destreg = DECODE_RM_WORD_REGISTER(rl); | |
5801 | imm = (s8) fetch_byte_imm(); | |
5802 | DECODE_PRINTF2(",%x\n", imm); | |
5803 | TRACE_AND_STEP(); | |
5804 | destval = (*opc83_word_operation[rh]) (*destreg, imm); | |
5805 | if (rh != 7) | |
5806 | *destreg = destval; | |
5807 | } | |
5808 | break; | |
5809 | } | |
5810 | DECODE_CLEAR_SEGOVR(); | |
5811 | END_OF_INSTR(); | |
5812 | } | |
5813 | ||
5814 | /**************************************************************************** | |
5815 | REMARKS: | |
5816 | Handles opcode 0x84 | |
5817 | ****************************************************************************/ | |
5818 | static void x86emuOp_test_byte_RM_R(u8 X86EMU_UNUSED(op1)) | |
5819 | { | |
5820 | int mod, rl, rh; | |
5821 | u8 *destreg, *srcreg; | |
5822 | uint destoffset; | |
5823 | u8 destval; | |
5824 | ||
5825 | START_OF_INSTR(); | |
5826 | DECODE_PRINTF("TEST\t"); | |
5827 | FETCH_DECODE_MODRM(mod, rh, rl); | |
5828 | switch (mod) { | |
5829 | case 0: | |
5830 | destoffset = decode_rm00_address(rl); | |
5831 | DECODE_PRINTF(","); | |
5832 | destval = fetch_data_byte(destoffset); | |
5833 | srcreg = DECODE_RM_BYTE_REGISTER(rh); | |
5834 | DECODE_PRINTF("\n"); | |
5835 | TRACE_AND_STEP(); | |
5836 | test_byte(destval, *srcreg); | |
5837 | break; | |
5838 | case 1: | |
5839 | destoffset = decode_rm01_address(rl); | |
5840 | DECODE_PRINTF(","); | |
5841 | destval = fetch_data_byte(destoffset); | |
5842 | srcreg = DECODE_RM_BYTE_REGISTER(rh); | |
5843 | DECODE_PRINTF("\n"); | |
5844 | TRACE_AND_STEP(); | |
5845 | test_byte(destval, *srcreg); | |
5846 | break; | |
5847 | case 2: | |
5848 | destoffset = decode_rm10_address(rl); | |
5849 | DECODE_PRINTF(","); | |
5850 | destval = fetch_data_byte(destoffset); | |
5851 | srcreg = DECODE_RM_BYTE_REGISTER(rh); | |
5852 | DECODE_PRINTF("\n"); | |
5853 | TRACE_AND_STEP(); | |
5854 | test_byte(destval, *srcreg); | |
5855 | break; | |
5856 | case 3: /* register to register */ | |
5857 | destreg = DECODE_RM_BYTE_REGISTER(rl); | |
5858 | DECODE_PRINTF(","); | |
5859 | srcreg = DECODE_RM_BYTE_REGISTER(rh); | |
5860 | DECODE_PRINTF("\n"); | |
5861 | TRACE_AND_STEP(); | |
5862 | test_byte(*destreg, *srcreg); | |
5863 | break; | |
5864 | } | |
5865 | DECODE_CLEAR_SEGOVR(); | |
5866 | END_OF_INSTR(); | |
5867 | } | |
5868 | ||
5869 | /**************************************************************************** | |
5870 | REMARKS: | |
5871 | Handles opcode 0x85 | |
5872 | ****************************************************************************/ | |
5873 | static void x86emuOp_test_word_RM_R(u8 X86EMU_UNUSED(op1)) | |
5874 | { | |
5875 | int mod, rl, rh; | |
5876 | uint destoffset; | |
5877 | ||
5878 | START_OF_INSTR(); | |
5879 | DECODE_PRINTF("TEST\t"); | |
5880 | FETCH_DECODE_MODRM(mod, rh, rl); | |
5881 | switch (mod) { | |
5882 | case 0: | |
5883 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
5884 | u32 destval; | |
5885 | u32 *srcreg; | |
5886 | ||
5887 | destoffset = decode_rm00_address(rl); | |
5888 | DECODE_PRINTF(","); | |
5889 | destval = fetch_data_long(destoffset); | |
5890 | srcreg = DECODE_RM_LONG_REGISTER(rh); | |
5891 | DECODE_PRINTF("\n"); | |
5892 | TRACE_AND_STEP(); | |
5893 | test_long(destval, *srcreg); | |
5894 | } else { | |
5895 | u16 destval; | |
5896 | u16 *srcreg; | |
5897 | ||
5898 | destoffset = decode_rm00_address(rl); | |
5899 | DECODE_PRINTF(","); | |
5900 | destval = fetch_data_word(destoffset); | |
5901 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
5902 | DECODE_PRINTF("\n"); | |
5903 | TRACE_AND_STEP(); | |
5904 | test_word(destval, *srcreg); | |
5905 | } | |
5906 | break; | |
5907 | case 1: | |
5908 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
5909 | u32 destval; | |
5910 | u32 *srcreg; | |
5911 | ||
5912 | destoffset = decode_rm01_address(rl); | |
5913 | DECODE_PRINTF(","); | |
5914 | destval = fetch_data_long(destoffset); | |
5915 | srcreg = DECODE_RM_LONG_REGISTER(rh); | |
5916 | DECODE_PRINTF("\n"); | |
5917 | TRACE_AND_STEP(); | |
5918 | test_long(destval, *srcreg); | |
5919 | } else { | |
5920 | u16 destval; | |
5921 | u16 *srcreg; | |
5922 | ||
5923 | destoffset = decode_rm01_address(rl); | |
5924 | DECODE_PRINTF(","); | |
5925 | destval = fetch_data_word(destoffset); | |
5926 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
5927 | DECODE_PRINTF("\n"); | |
5928 | TRACE_AND_STEP(); | |
5929 | test_word(destval, *srcreg); | |
5930 | } | |
5931 | break; | |
5932 | case 2: | |
5933 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
5934 | u32 destval; | |
5935 | u32 *srcreg; | |
5936 | ||
5937 | destoffset = decode_rm10_address(rl); | |
5938 | DECODE_PRINTF(","); | |
5939 | destval = fetch_data_long(destoffset); | |
5940 | srcreg = DECODE_RM_LONG_REGISTER(rh); | |
5941 | DECODE_PRINTF("\n"); | |
5942 | TRACE_AND_STEP(); | |
5943 | test_long(destval, *srcreg); | |
5944 | } else { | |
5945 | u16 destval; | |
5946 | u16 *srcreg; | |
5947 | ||
5948 | destoffset = decode_rm10_address(rl); | |
5949 | DECODE_PRINTF(","); | |
5950 | destval = fetch_data_word(destoffset); | |
5951 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
5952 | DECODE_PRINTF("\n"); | |
5953 | TRACE_AND_STEP(); | |
5954 | test_word(destval, *srcreg); | |
5955 | } | |
5956 | break; | |
5957 | case 3: /* register to register */ | |
5958 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
5959 | u32 *destreg,*srcreg; | |
5960 | ||
5961 | destreg = DECODE_RM_LONG_REGISTER(rl); | |
5962 | DECODE_PRINTF(","); | |
5963 | srcreg = DECODE_RM_LONG_REGISTER(rh); | |
5964 | DECODE_PRINTF("\n"); | |
5965 | TRACE_AND_STEP(); | |
5966 | test_long(*destreg, *srcreg); | |
5967 | } else { | |
5968 | u16 *destreg,*srcreg; | |
5969 | ||
5970 | destreg = DECODE_RM_WORD_REGISTER(rl); | |
5971 | DECODE_PRINTF(","); | |
5972 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
5973 | DECODE_PRINTF("\n"); | |
5974 | TRACE_AND_STEP(); | |
5975 | test_word(*destreg, *srcreg); | |
5976 | } | |
5977 | break; | |
5978 | } | |
5979 | DECODE_CLEAR_SEGOVR(); | |
5980 | END_OF_INSTR(); | |
5981 | } | |
5982 | ||
5983 | /**************************************************************************** | |
5984 | REMARKS: | |
5985 | Handles opcode 0x86 | |
5986 | ****************************************************************************/ | |
5987 | static void x86emuOp_xchg_byte_RM_R(u8 X86EMU_UNUSED(op1)) | |
5988 | { | |
5989 | int mod, rl, rh; | |
5990 | u8 *destreg, *srcreg; | |
5991 | uint destoffset; | |
5992 | u8 destval; | |
5993 | u8 tmp; | |
5994 | ||
5995 | START_OF_INSTR(); | |
5996 | DECODE_PRINTF("XCHG\t"); | |
5997 | FETCH_DECODE_MODRM(mod, rh, rl); | |
5998 | switch (mod) { | |
5999 | case 0: | |
6000 | destoffset = decode_rm00_address(rl); | |
6001 | DECODE_PRINTF(","); | |
6002 | destval = fetch_data_byte(destoffset); | |
6003 | srcreg = DECODE_RM_BYTE_REGISTER(rh); | |
6004 | DECODE_PRINTF("\n"); | |
6005 | TRACE_AND_STEP(); | |
6006 | tmp = *srcreg; | |
6007 | *srcreg = destval; | |
6008 | destval = tmp; | |
6009 | store_data_byte(destoffset, destval); | |
6010 | break; | |
6011 | case 1: | |
6012 | destoffset = decode_rm01_address(rl); | |
6013 | DECODE_PRINTF(","); | |
6014 | destval = fetch_data_byte(destoffset); | |
6015 | srcreg = DECODE_RM_BYTE_REGISTER(rh); | |
6016 | DECODE_PRINTF("\n"); | |
6017 | TRACE_AND_STEP(); | |
6018 | tmp = *srcreg; | |
6019 | *srcreg = destval; | |
6020 | destval = tmp; | |
6021 | store_data_byte(destoffset, destval); | |
6022 | break; | |
6023 | case 2: | |
6024 | destoffset = decode_rm10_address(rl); | |
6025 | DECODE_PRINTF(","); | |
6026 | destval = fetch_data_byte(destoffset); | |
6027 | srcreg = DECODE_RM_BYTE_REGISTER(rh); | |
6028 | DECODE_PRINTF("\n"); | |
6029 | TRACE_AND_STEP(); | |
6030 | tmp = *srcreg; | |
6031 | *srcreg = destval; | |
6032 | destval = tmp; | |
6033 | store_data_byte(destoffset, destval); | |
6034 | break; | |
6035 | case 3: /* register to register */ | |
6036 | destreg = DECODE_RM_BYTE_REGISTER(rl); | |
6037 | DECODE_PRINTF(","); | |
6038 | srcreg = DECODE_RM_BYTE_REGISTER(rh); | |
6039 | DECODE_PRINTF("\n"); | |
6040 | TRACE_AND_STEP(); | |
6041 | tmp = *srcreg; | |
6042 | *srcreg = *destreg; | |
6043 | *destreg = tmp; | |
6044 | break; | |
6045 | } | |
6046 | DECODE_CLEAR_SEGOVR(); | |
6047 | END_OF_INSTR(); | |
6048 | } | |
6049 | ||
6050 | /**************************************************************************** | |
6051 | REMARKS: | |
6052 | Handles opcode 0x87 | |
6053 | ****************************************************************************/ | |
6054 | static void x86emuOp_xchg_word_RM_R(u8 X86EMU_UNUSED(op1)) | |
6055 | { | |
6056 | int mod, rl, rh; | |
6057 | uint destoffset; | |
6058 | ||
6059 | START_OF_INSTR(); | |
6060 | DECODE_PRINTF("XCHG\t"); | |
6061 | FETCH_DECODE_MODRM(mod, rh, rl); | |
6062 | switch (mod) { | |
6063 | case 0: | |
6064 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
6065 | u32 *srcreg; | |
6066 | u32 destval,tmp; | |
6067 | ||
6068 | destoffset = decode_rm00_address(rl); | |
6069 | DECODE_PRINTF(","); | |
6070 | destval = fetch_data_long(destoffset); | |
6071 | srcreg = DECODE_RM_LONG_REGISTER(rh); | |
6072 | DECODE_PRINTF("\n"); | |
6073 | TRACE_AND_STEP(); | |
6074 | tmp = *srcreg; | |
6075 | *srcreg = destval; | |
6076 | destval = tmp; | |
6077 | store_data_long(destoffset, destval); | |
6078 | } else { | |
6079 | u16 *srcreg; | |
6080 | u16 destval,tmp; | |
6081 | ||
6082 | destoffset = decode_rm00_address(rl); | |
6083 | DECODE_PRINTF(","); | |
6084 | destval = fetch_data_word(destoffset); | |
6085 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
6086 | DECODE_PRINTF("\n"); | |
6087 | TRACE_AND_STEP(); | |
6088 | tmp = *srcreg; | |
6089 | *srcreg = destval; | |
6090 | destval = tmp; | |
6091 | store_data_word(destoffset, destval); | |
6092 | } | |
6093 | break; | |
6094 | case 1: | |
6095 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
6096 | u32 *srcreg; | |
6097 | u32 destval,tmp; | |
6098 | ||
6099 | destoffset = decode_rm01_address(rl); | |
6100 | DECODE_PRINTF(","); | |
6101 | destval = fetch_data_long(destoffset); | |
6102 | srcreg = DECODE_RM_LONG_REGISTER(rh); | |
6103 | DECODE_PRINTF("\n"); | |
6104 | TRACE_AND_STEP(); | |
6105 | tmp = *srcreg; | |
6106 | *srcreg = destval; | |
6107 | destval = tmp; | |
6108 | store_data_long(destoffset, destval); | |
6109 | } else { | |
6110 | u16 *srcreg; | |
6111 | u16 destval,tmp; | |
6112 | ||
6113 | destoffset = decode_rm01_address(rl); | |
6114 | DECODE_PRINTF(","); | |
6115 | destval = fetch_data_word(destoffset); | |
6116 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
6117 | DECODE_PRINTF("\n"); | |
6118 | TRACE_AND_STEP(); | |
6119 | tmp = *srcreg; | |
6120 | *srcreg = destval; | |
6121 | destval = tmp; | |
6122 | store_data_word(destoffset, destval); | |
6123 | } | |
6124 | break; | |
6125 | case 2: | |
6126 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
6127 | u32 *srcreg; | |
6128 | u32 destval,tmp; | |
6129 | ||
6130 | destoffset = decode_rm10_address(rl); | |
6131 | DECODE_PRINTF(","); | |
6132 | destval = fetch_data_long(destoffset); | |
6133 | srcreg = DECODE_RM_LONG_REGISTER(rh); | |
6134 | DECODE_PRINTF("\n"); | |
6135 | TRACE_AND_STEP(); | |
6136 | tmp = *srcreg; | |
6137 | *srcreg = destval; | |
6138 | destval = tmp; | |
6139 | store_data_long(destoffset, destval); | |
6140 | } else { | |
6141 | u16 *srcreg; | |
6142 | u16 destval,tmp; | |
6143 | ||
6144 | destoffset = decode_rm10_address(rl); | |
6145 | DECODE_PRINTF(","); | |
6146 | destval = fetch_data_word(destoffset); | |
6147 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
6148 | DECODE_PRINTF("\n"); | |
6149 | TRACE_AND_STEP(); | |
6150 | tmp = *srcreg; | |
6151 | *srcreg = destval; | |
6152 | destval = tmp; | |
6153 | store_data_word(destoffset, destval); | |
6154 | } | |
6155 | break; | |
6156 | case 3: /* register to register */ | |
6157 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
6158 | u32 *destreg,*srcreg; | |
6159 | u32 tmp; | |
6160 | ||
6161 | destreg = DECODE_RM_LONG_REGISTER(rl); | |
6162 | DECODE_PRINTF(","); | |
6163 | srcreg = DECODE_RM_LONG_REGISTER(rh); | |
6164 | DECODE_PRINTF("\n"); | |
6165 | TRACE_AND_STEP(); | |
6166 | tmp = *srcreg; | |
6167 | *srcreg = *destreg; | |
6168 | *destreg = tmp; | |
6169 | } else { | |
6170 | u16 *destreg,*srcreg; | |
6171 | u16 tmp; | |
6172 | ||
6173 | destreg = DECODE_RM_WORD_REGISTER(rl); | |
6174 | DECODE_PRINTF(","); | |
6175 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
6176 | DECODE_PRINTF("\n"); | |
6177 | TRACE_AND_STEP(); | |
6178 | tmp = *srcreg; | |
6179 | *srcreg = *destreg; | |
6180 | *destreg = tmp; | |
6181 | } | |
6182 | break; | |
6183 | } | |
6184 | DECODE_CLEAR_SEGOVR(); | |
6185 | END_OF_INSTR(); | |
6186 | } | |
6187 | ||
6188 | /**************************************************************************** | |
6189 | REMARKS: | |
6190 | Handles opcode 0x88 | |
6191 | ****************************************************************************/ | |
6192 | static void x86emuOp_mov_byte_RM_R(u8 X86EMU_UNUSED(op1)) | |
6193 | { | |
6194 | int mod, rl, rh; | |
6195 | u8 *destreg, *srcreg; | |
6196 | uint destoffset; | |
6197 | ||
6198 | START_OF_INSTR(); | |
6199 | DECODE_PRINTF("MOV\t"); | |
6200 | FETCH_DECODE_MODRM(mod, rh, rl); | |
6201 | switch (mod) { | |
6202 | case 0: | |
6203 | destoffset = decode_rm00_address(rl); | |
6204 | DECODE_PRINTF(","); | |
6205 | srcreg = DECODE_RM_BYTE_REGISTER(rh); | |
6206 | DECODE_PRINTF("\n"); | |
6207 | TRACE_AND_STEP(); | |
6208 | store_data_byte(destoffset, *srcreg); | |
6209 | break; | |
6210 | case 1: | |
6211 | destoffset = decode_rm01_address(rl); | |
6212 | DECODE_PRINTF(","); | |
6213 | srcreg = DECODE_RM_BYTE_REGISTER(rh); | |
6214 | DECODE_PRINTF("\n"); | |
6215 | TRACE_AND_STEP(); | |
6216 | store_data_byte(destoffset, *srcreg); | |
6217 | break; | |
6218 | case 2: | |
6219 | destoffset = decode_rm10_address(rl); | |
6220 | DECODE_PRINTF(","); | |
6221 | srcreg = DECODE_RM_BYTE_REGISTER(rh); | |
6222 | DECODE_PRINTF("\n"); | |
6223 | TRACE_AND_STEP(); | |
6224 | store_data_byte(destoffset, *srcreg); | |
6225 | break; | |
6226 | case 3: /* register to register */ | |
6227 | destreg = DECODE_RM_BYTE_REGISTER(rl); | |
6228 | DECODE_PRINTF(","); | |
6229 | srcreg = DECODE_RM_BYTE_REGISTER(rh); | |
6230 | DECODE_PRINTF("\n"); | |
6231 | TRACE_AND_STEP(); | |
6232 | *destreg = *srcreg; | |
6233 | break; | |
6234 | } | |
6235 | DECODE_CLEAR_SEGOVR(); | |
6236 | END_OF_INSTR(); | |
6237 | } | |
6238 | ||
6239 | /**************************************************************************** | |
6240 | REMARKS: | |
6241 | Handles opcode 0x89 | |
6242 | ****************************************************************************/ | |
6243 | static void x86emuOp_mov_word_RM_R(u8 X86EMU_UNUSED(op1)) | |
6244 | { | |
6245 | int mod, rl, rh; | |
6246 | u32 destoffset; | |
6247 | ||
6248 | START_OF_INSTR(); | |
6249 | DECODE_PRINTF("MOV\t"); | |
6250 | FETCH_DECODE_MODRM(mod, rh, rl); | |
6251 | switch (mod) { | |
6252 | case 0: | |
6253 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
6254 | u32 *srcreg; | |
6255 | ||
6256 | destoffset = decode_rm00_address(rl); | |
6257 | DECODE_PRINTF(","); | |
6258 | srcreg = DECODE_RM_LONG_REGISTER(rh); | |
6259 | DECODE_PRINTF("\n"); | |
6260 | TRACE_AND_STEP(); | |
6261 | store_data_long(destoffset, *srcreg); | |
6262 | } else { | |
6263 | u16 *srcreg; | |
6264 | ||
6265 | destoffset = decode_rm00_address(rl); | |
6266 | DECODE_PRINTF(","); | |
6267 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
6268 | DECODE_PRINTF("\n"); | |
6269 | TRACE_AND_STEP(); | |
6270 | store_data_word(destoffset, *srcreg); | |
6271 | } | |
6272 | break; | |
6273 | case 1: | |
6274 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
6275 | u32 *srcreg; | |
6276 | ||
6277 | destoffset = decode_rm01_address(rl); | |
6278 | DECODE_PRINTF(","); | |
6279 | srcreg = DECODE_RM_LONG_REGISTER(rh); | |
6280 | DECODE_PRINTF("\n"); | |
6281 | TRACE_AND_STEP(); | |
6282 | store_data_long(destoffset, *srcreg); | |
6283 | } else { | |
6284 | u16 *srcreg; | |
6285 | ||
6286 | destoffset = decode_rm01_address(rl); | |
6287 | DECODE_PRINTF(","); | |
6288 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
6289 | DECODE_PRINTF("\n"); | |
6290 | TRACE_AND_STEP(); | |
6291 | store_data_word(destoffset, *srcreg); | |
6292 | } | |
6293 | break; | |
6294 | case 2: | |
6295 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
6296 | u32 *srcreg; | |
6297 | ||
6298 | destoffset = decode_rm10_address(rl); | |
6299 | DECODE_PRINTF(","); | |
6300 | srcreg = DECODE_RM_LONG_REGISTER(rh); | |
6301 | DECODE_PRINTF("\n"); | |
6302 | TRACE_AND_STEP(); | |
6303 | store_data_long(destoffset, *srcreg); | |
6304 | } else { | |
6305 | u16 *srcreg; | |
6306 | ||
6307 | destoffset = decode_rm10_address(rl); | |
6308 | DECODE_PRINTF(","); | |
6309 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
6310 | DECODE_PRINTF("\n"); | |
6311 | TRACE_AND_STEP(); | |
6312 | store_data_word(destoffset, *srcreg); | |
6313 | } | |
6314 | break; | |
6315 | case 3: /* register to register */ | |
6316 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
6317 | u32 *destreg,*srcreg; | |
6318 | ||
6319 | destreg = DECODE_RM_LONG_REGISTER(rl); | |
6320 | DECODE_PRINTF(","); | |
6321 | srcreg = DECODE_RM_LONG_REGISTER(rh); | |
6322 | DECODE_PRINTF("\n"); | |
6323 | TRACE_AND_STEP(); | |
6324 | *destreg = *srcreg; | |
6325 | } else { | |
6326 | u16 *destreg,*srcreg; | |
6327 | ||
6328 | destreg = DECODE_RM_WORD_REGISTER(rl); | |
6329 | DECODE_PRINTF(","); | |
6330 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
6331 | DECODE_PRINTF("\n"); | |
6332 | TRACE_AND_STEP(); | |
6333 | *destreg = *srcreg; | |
6334 | } | |
6335 | break; | |
6336 | } | |
6337 | DECODE_CLEAR_SEGOVR(); | |
6338 | END_OF_INSTR(); | |
6339 | } | |
6340 | ||
6341 | /**************************************************************************** | |
6342 | REMARKS: | |
6343 | Handles opcode 0x8a | |
6344 | ****************************************************************************/ | |
6345 | static void x86emuOp_mov_byte_R_RM(u8 X86EMU_UNUSED(op1)) | |
6346 | { | |
6347 | int mod, rl, rh; | |
6348 | u8 *destreg, *srcreg; | |
6349 | uint srcoffset; | |
6350 | u8 srcval; | |
6351 | ||
6352 | START_OF_INSTR(); | |
6353 | DECODE_PRINTF("MOV\t"); | |
6354 | FETCH_DECODE_MODRM(mod, rh, rl); | |
6355 | switch (mod) { | |
6356 | case 0: | |
6357 | destreg = DECODE_RM_BYTE_REGISTER(rh); | |
6358 | DECODE_PRINTF(","); | |
6359 | srcoffset = decode_rm00_address(rl); | |
6360 | srcval = fetch_data_byte(srcoffset); | |
6361 | DECODE_PRINTF("\n"); | |
6362 | TRACE_AND_STEP(); | |
6363 | *destreg = srcval; | |
6364 | break; | |
6365 | case 1: | |
6366 | destreg = DECODE_RM_BYTE_REGISTER(rh); | |
6367 | DECODE_PRINTF(","); | |
6368 | srcoffset = decode_rm01_address(rl); | |
6369 | srcval = fetch_data_byte(srcoffset); | |
6370 | DECODE_PRINTF("\n"); | |
6371 | TRACE_AND_STEP(); | |
6372 | *destreg = srcval; | |
6373 | break; | |
6374 | case 2: | |
6375 | destreg = DECODE_RM_BYTE_REGISTER(rh); | |
6376 | DECODE_PRINTF(","); | |
6377 | srcoffset = decode_rm10_address(rl); | |
6378 | srcval = fetch_data_byte(srcoffset); | |
6379 | DECODE_PRINTF("\n"); | |
6380 | TRACE_AND_STEP(); | |
6381 | *destreg = srcval; | |
6382 | break; | |
6383 | case 3: /* register to register */ | |
6384 | destreg = DECODE_RM_BYTE_REGISTER(rh); | |
6385 | DECODE_PRINTF(","); | |
6386 | srcreg = DECODE_RM_BYTE_REGISTER(rl); | |
6387 | DECODE_PRINTF("\n"); | |
6388 | TRACE_AND_STEP(); | |
6389 | *destreg = *srcreg; | |
6390 | break; | |
6391 | } | |
6392 | DECODE_CLEAR_SEGOVR(); | |
6393 | END_OF_INSTR(); | |
6394 | } | |
6395 | ||
6396 | /**************************************************************************** | |
6397 | REMARKS: | |
6398 | Handles opcode 0x8b | |
6399 | ****************************************************************************/ | |
6400 | static void x86emuOp_mov_word_R_RM(u8 X86EMU_UNUSED(op1)) | |
6401 | { | |
6402 | int mod, rl, rh; | |
6403 | uint srcoffset; | |
6404 | ||
6405 | START_OF_INSTR(); | |
6406 | DECODE_PRINTF("MOV\t"); | |
6407 | FETCH_DECODE_MODRM(mod, rh, rl); | |
6408 | switch (mod) { | |
6409 | case 0: | |
6410 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
6411 | u32 *destreg; | |
6412 | u32 srcval; | |
6413 | ||
6414 | destreg = DECODE_RM_LONG_REGISTER(rh); | |
6415 | DECODE_PRINTF(","); | |
6416 | srcoffset = decode_rm00_address(rl); | |
6417 | srcval = fetch_data_long(srcoffset); | |
6418 | DECODE_PRINTF("\n"); | |
6419 | TRACE_AND_STEP(); | |
6420 | *destreg = srcval; | |
6421 | } else { | |
6422 | u16 *destreg; | |
6423 | u16 srcval; | |
6424 | ||
6425 | destreg = DECODE_RM_WORD_REGISTER(rh); | |
6426 | DECODE_PRINTF(","); | |
6427 | srcoffset = decode_rm00_address(rl); | |
6428 | srcval = fetch_data_word(srcoffset); | |
6429 | DECODE_PRINTF("\n"); | |
6430 | TRACE_AND_STEP(); | |
6431 | *destreg = srcval; | |
6432 | } | |
6433 | break; | |
6434 | case 1: | |
6435 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
6436 | u32 *destreg; | |
6437 | u32 srcval; | |
6438 | ||
6439 | destreg = DECODE_RM_LONG_REGISTER(rh); | |
6440 | DECODE_PRINTF(","); | |
6441 | srcoffset = decode_rm01_address(rl); | |
6442 | srcval = fetch_data_long(srcoffset); | |
6443 | DECODE_PRINTF("\n"); | |
6444 | TRACE_AND_STEP(); | |
6445 | *destreg = srcval; | |
6446 | } else { | |
6447 | u16 *destreg; | |
6448 | u16 srcval; | |
6449 | ||
6450 | destreg = DECODE_RM_WORD_REGISTER(rh); | |
6451 | DECODE_PRINTF(","); | |
6452 | srcoffset = decode_rm01_address(rl); | |
6453 | srcval = fetch_data_word(srcoffset); | |
6454 | DECODE_PRINTF("\n"); | |
6455 | TRACE_AND_STEP(); | |
6456 | *destreg = srcval; | |
6457 | } | |
6458 | break; | |
6459 | case 2: | |
6460 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
6461 | u32 *destreg; | |
6462 | u32 srcval; | |
6463 | ||
6464 | destreg = DECODE_RM_LONG_REGISTER(rh); | |
6465 | DECODE_PRINTF(","); | |
6466 | srcoffset = decode_rm10_address(rl); | |
6467 | srcval = fetch_data_long(srcoffset); | |
6468 | DECODE_PRINTF("\n"); | |
6469 | TRACE_AND_STEP(); | |
6470 | *destreg = srcval; | |
6471 | } else { | |
6472 | u16 *destreg; | |
6473 | u16 srcval; | |
6474 | ||
6475 | destreg = DECODE_RM_WORD_REGISTER(rh); | |
6476 | DECODE_PRINTF(","); | |
6477 | srcoffset = decode_rm10_address(rl); | |
6478 | srcval = fetch_data_word(srcoffset); | |
6479 | DECODE_PRINTF("\n"); | |
6480 | TRACE_AND_STEP(); | |
6481 | *destreg = srcval; | |
6482 | } | |
6483 | break; | |
6484 | case 3: /* register to register */ | |
6485 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
6486 | u32 *destreg, *srcreg; | |
6487 | ||
6488 | destreg = DECODE_RM_LONG_REGISTER(rh); | |
6489 | DECODE_PRINTF(","); | |
6490 | srcreg = DECODE_RM_LONG_REGISTER(rl); | |
6491 | DECODE_PRINTF("\n"); | |
6492 | TRACE_AND_STEP(); | |
6493 | *destreg = *srcreg; | |
6494 | } else { | |
6495 | u16 *destreg, *srcreg; | |
6496 | ||
6497 | destreg = DECODE_RM_WORD_REGISTER(rh); | |
6498 | DECODE_PRINTF(","); | |
6499 | srcreg = DECODE_RM_WORD_REGISTER(rl); | |
6500 | DECODE_PRINTF("\n"); | |
6501 | TRACE_AND_STEP(); | |
6502 | *destreg = *srcreg; | |
6503 | } | |
6504 | break; | |
6505 | } | |
6506 | DECODE_CLEAR_SEGOVR(); | |
6507 | END_OF_INSTR(); | |
6508 | } | |
6509 | ||
6510 | /**************************************************************************** | |
6511 | REMARKS: | |
6512 | Handles opcode 0x8c | |
6513 | ****************************************************************************/ | |
6514 | static void x86emuOp_mov_word_RM_SR(u8 X86EMU_UNUSED(op1)) | |
6515 | { | |
6516 | int mod, rl, rh; | |
6517 | u16 *destreg, *srcreg; | |
6518 | uint destoffset; | |
6519 | u16 destval; | |
6520 | ||
6521 | START_OF_INSTR(); | |
6522 | DECODE_PRINTF("MOV\t"); | |
6523 | FETCH_DECODE_MODRM(mod, rh, rl); | |
6524 | switch (mod) { | |
6525 | case 0: | |
6526 | destoffset = decode_rm00_address(rl); | |
6527 | DECODE_PRINTF(","); | |
6528 | srcreg = decode_rm_seg_register(rh); | |
6529 | DECODE_PRINTF("\n"); | |
6530 | TRACE_AND_STEP(); | |
6531 | destval = *srcreg; | |
6532 | store_data_word(destoffset, destval); | |
6533 | break; | |
6534 | case 1: | |
6535 | destoffset = decode_rm01_address(rl); | |
6536 | DECODE_PRINTF(","); | |
6537 | srcreg = decode_rm_seg_register(rh); | |
6538 | DECODE_PRINTF("\n"); | |
6539 | TRACE_AND_STEP(); | |
6540 | destval = *srcreg; | |
6541 | store_data_word(destoffset, destval); | |
6542 | break; | |
6543 | case 2: | |
6544 | destoffset = decode_rm10_address(rl); | |
6545 | DECODE_PRINTF(","); | |
6546 | srcreg = decode_rm_seg_register(rh); | |
6547 | DECODE_PRINTF("\n"); | |
6548 | TRACE_AND_STEP(); | |
6549 | destval = *srcreg; | |
6550 | store_data_word(destoffset, destval); | |
6551 | break; | |
6552 | case 3: /* register to register */ | |
6553 | destreg = DECODE_RM_WORD_REGISTER(rl); | |
6554 | DECODE_PRINTF(","); | |
6555 | srcreg = decode_rm_seg_register(rh); | |
6556 | DECODE_PRINTF("\n"); | |
6557 | TRACE_AND_STEP(); | |
6558 | *destreg = *srcreg; | |
6559 | break; | |
6560 | } | |
6561 | DECODE_CLEAR_SEGOVR(); | |
6562 | END_OF_INSTR(); | |
6563 | } | |
6564 | ||
6565 | /**************************************************************************** | |
6566 | REMARKS: | |
6567 | Handles opcode 0x8d | |
6568 | ****************************************************************************/ | |
6569 | static void x86emuOp_lea_word_R_M(u8 X86EMU_UNUSED(op1)) | |
6570 | { | |
6571 | int mod, rl, rh; | |
6572 | u16 *srcreg; | |
6573 | uint destoffset; | |
6574 | ||
6575 | /* | |
6576 | * TODO: Need to handle address size prefix! | |
6577 | * | |
6578 | * lea eax,[eax+ebx*2] ?? | |
6579 | */ | |
6580 | ||
6581 | START_OF_INSTR(); | |
6582 | DECODE_PRINTF("LEA\t"); | |
6583 | FETCH_DECODE_MODRM(mod, rh, rl); | |
6584 | switch (mod) { | |
6585 | case 0: | |
6586 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
6587 | DECODE_PRINTF(","); | |
6588 | destoffset = decode_rm00_address(rl); | |
6589 | DECODE_PRINTF("\n"); | |
6590 | TRACE_AND_STEP(); | |
6591 | *srcreg = (u16)destoffset; | |
6592 | break; | |
6593 | case 1: | |
6594 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
6595 | DECODE_PRINTF(","); | |
6596 | destoffset = decode_rm01_address(rl); | |
6597 | DECODE_PRINTF("\n"); | |
6598 | TRACE_AND_STEP(); | |
6599 | *srcreg = (u16)destoffset; | |
6600 | break; | |
6601 | case 2: | |
6602 | srcreg = DECODE_RM_WORD_REGISTER(rh); | |
6603 | DECODE_PRINTF(","); | |
6604 | destoffset = decode_rm10_address(rl); | |
6605 | DECODE_PRINTF("\n"); | |
6606 | TRACE_AND_STEP(); | |
6607 | *srcreg = (u16)destoffset; | |
6608 | break; | |
6609 | case 3: /* register to register */ | |
6610 | /* undefined. Do nothing. */ | |
6611 | break; | |
6612 | } | |
6613 | DECODE_CLEAR_SEGOVR(); | |
6614 | END_OF_INSTR(); | |
6615 | } | |
6616 | ||
6617 | /**************************************************************************** | |
6618 | REMARKS: | |
6619 | Handles opcode 0x8e | |
6620 | ****************************************************************************/ | |
6621 | static void x86emuOp_mov_word_SR_RM(u8 X86EMU_UNUSED(op1)) | |
6622 | { | |
6623 | int mod, rl, rh; | |
6624 | u16 *destreg, *srcreg; | |
6625 | uint srcoffset; | |
6626 | u16 srcval; | |
6627 | ||
6628 | START_OF_INSTR(); | |
6629 | DECODE_PRINTF("MOV\t"); | |
6630 | FETCH_DECODE_MODRM(mod, rh, rl); | |
6631 | switch (mod) { | |
6632 | case 0: | |
6633 | destreg = decode_rm_seg_register(rh); | |
6634 | DECODE_PRINTF(","); | |
6635 | srcoffset = decode_rm00_address(rl); | |
6636 | srcval = fetch_data_word(srcoffset); | |
6637 | DECODE_PRINTF("\n"); | |
6638 | TRACE_AND_STEP(); | |
6639 | *destreg = srcval; | |
6640 | break; | |
6641 | case 1: | |
6642 | destreg = decode_rm_seg_register(rh); | |
6643 | DECODE_PRINTF(","); | |
6644 | srcoffset = decode_rm01_address(rl); | |
6645 | srcval = fetch_data_word(srcoffset); | |
6646 | DECODE_PRINTF("\n"); | |
6647 | TRACE_AND_STEP(); | |
6648 | *destreg = srcval; | |
6649 | break; | |
6650 | case 2: | |
6651 | destreg = decode_rm_seg_register(rh); | |
6652 | DECODE_PRINTF(","); | |
6653 | srcoffset = decode_rm10_address(rl); | |
6654 | srcval = fetch_data_word(srcoffset); | |
6655 | DECODE_PRINTF("\n"); | |
6656 | TRACE_AND_STEP(); | |
6657 | *destreg = srcval; | |
6658 | break; | |
6659 | case 3: /* register to register */ | |
6660 | destreg = decode_rm_seg_register(rh); | |
6661 | DECODE_PRINTF(","); | |
6662 | srcreg = DECODE_RM_WORD_REGISTER(rl); | |
6663 | DECODE_PRINTF("\n"); | |
6664 | TRACE_AND_STEP(); | |
6665 | *destreg = *srcreg; | |
6666 | break; | |
6667 | } | |
6668 | /* | |
6669 | * Clean up, and reset all the R_xSP pointers to the correct | |
6670 | * locations. This is about 3x too much overhead (doing all the | |
6671 | * segreg ptrs when only one is needed, but this instruction | |
6672 | * *cannot* be that common, and this isn't too much work anyway. | |
6673 | */ | |
6674 | DECODE_CLEAR_SEGOVR(); | |
6675 | END_OF_INSTR(); | |
6676 | } | |
6677 | ||
6678 | /**************************************************************************** | |
6679 | REMARKS: | |
6680 | Handles opcode 0x8f | |
6681 | ****************************************************************************/ | |
6682 | static void x86emuOp_pop_RM(u8 X86EMU_UNUSED(op1)) | |
6683 | { | |
6684 | int mod, rl, rh; | |
6685 | uint destoffset; | |
6686 | ||
6687 | START_OF_INSTR(); | |
6688 | DECODE_PRINTF("POP\t"); | |
6689 | FETCH_DECODE_MODRM(mod, rh, rl); | |
6690 | if (rh != 0) { | |
6691 | DECODE_PRINTF("ILLEGAL DECODE OF OPCODE 8F\n"); | |
6692 | HALT_SYS(); | |
6693 | } | |
6694 | switch (mod) { | |
6695 | case 0: | |
6696 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
6697 | u32 destval; | |
6698 | ||
6699 | destoffset = decode_rm00_address(rl); | |
6700 | DECODE_PRINTF("\n"); | |
6701 | TRACE_AND_STEP(); | |
6702 | destval = pop_long(); | |
6703 | store_data_long(destoffset, destval); | |
6704 | } else { | |
6705 | u16 destval; | |
6706 | ||
6707 | destoffset = decode_rm00_address(rl); | |
6708 | DECODE_PRINTF("\n"); | |
6709 | TRACE_AND_STEP(); | |
6710 | destval = pop_word(); | |
6711 | store_data_word(destoffset, destval); | |
6712 | } | |
6713 | break; | |
6714 | case 1: | |
6715 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
6716 | u32 destval; | |
6717 | ||
6718 | destoffset = decode_rm01_address(rl); | |
6719 | DECODE_PRINTF("\n"); | |
6720 | TRACE_AND_STEP(); | |
6721 | destval = pop_long(); | |
6722 | store_data_long(destoffset, destval); | |
6723 | } else { | |
6724 | u16 destval; | |
6725 | ||
6726 | destoffset = decode_rm01_address(rl); | |
6727 | DECODE_PRINTF("\n"); | |
6728 | TRACE_AND_STEP(); | |
6729 | destval = pop_word(); | |
6730 | store_data_word(destoffset, destval); | |
6731 | } | |
6732 | break; | |
6733 | case 2: | |
6734 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
6735 | u32 destval; | |
6736 | ||
6737 | destoffset = decode_rm10_address(rl); | |
6738 | DECODE_PRINTF("\n"); | |
6739 | TRACE_AND_STEP(); | |
6740 | destval = pop_long(); | |
6741 | store_data_long(destoffset, destval); | |
6742 | } else { | |
6743 | u16 destval; | |
6744 | ||
6745 | destoffset = decode_rm10_address(rl); | |
6746 | DECODE_PRINTF("\n"); | |
6747 | TRACE_AND_STEP(); | |
6748 | destval = pop_word(); | |
6749 | store_data_word(destoffset, destval); | |
6750 | } | |
6751 | break; | |
6752 | case 3: /* register to register */ | |
6753 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
6754 | u32 *destreg; | |
6755 | ||
6756 | destreg = DECODE_RM_LONG_REGISTER(rl); | |
6757 | DECODE_PRINTF("\n"); | |
6758 | TRACE_AND_STEP(); | |
6759 | *destreg = pop_long(); | |
6760 | } else { | |
6761 | u16 *destreg; | |
6762 | ||
6763 | destreg = DECODE_RM_WORD_REGISTER(rl); | |
6764 | DECODE_PRINTF("\n"); | |
6765 | TRACE_AND_STEP(); | |
6766 | *destreg = pop_word(); | |
6767 | } | |
6768 | break; | |
6769 | } | |
6770 | DECODE_CLEAR_SEGOVR(); | |
6771 | END_OF_INSTR(); | |
6772 | } | |
6773 | ||
6774 | /**************************************************************************** | |
6775 | REMARKS: | |
6776 | Handles opcode 0x90 | |
6777 | ****************************************************************************/ | |
6778 | static void x86emuOp_nop(u8 X86EMU_UNUSED(op1)) | |
6779 | { | |
6780 | START_OF_INSTR(); | |
6781 | DECODE_PRINTF("NOP\n"); | |
6782 | TRACE_AND_STEP(); | |
6783 | DECODE_CLEAR_SEGOVR(); | |
6784 | END_OF_INSTR(); | |
6785 | } | |
6786 | ||
6787 | /**************************************************************************** | |
6788 | REMARKS: | |
6789 | Handles opcode 0x91 | |
6790 | ****************************************************************************/ | |
6791 | static void x86emuOp_xchg_word_AX_CX(u8 X86EMU_UNUSED(op1)) | |
6792 | { | |
6793 | u32 tmp; | |
6794 | ||
6795 | START_OF_INSTR(); | |
6796 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
6797 | DECODE_PRINTF("XCHG\tEAX,ECX\n"); | |
6798 | } else { | |
6799 | DECODE_PRINTF("XCHG\tAX,CX\n"); | |
6800 | } | |
6801 | TRACE_AND_STEP(); | |
6802 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
6803 | tmp = M.x86.R_EAX; | |
6804 | M.x86.R_EAX = M.x86.R_ECX; | |
6805 | M.x86.R_ECX = tmp; | |
6806 | } else { | |
6807 | tmp = M.x86.R_AX; | |
6808 | M.x86.R_AX = M.x86.R_CX; | |
6809 | M.x86.R_CX = (u16)tmp; | |
6810 | } | |
6811 | DECODE_CLEAR_SEGOVR(); | |
6812 | END_OF_INSTR(); | |
6813 | } | |
6814 | ||
6815 | /**************************************************************************** | |
6816 | REMARKS: | |
6817 | Handles opcode 0x92 | |
6818 | ****************************************************************************/ | |
6819 | static void x86emuOp_xchg_word_AX_DX(u8 X86EMU_UNUSED(op1)) | |
6820 | { | |
6821 | u32 tmp; | |
6822 | ||
6823 | START_OF_INSTR(); | |
6824 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
6825 | DECODE_PRINTF("XCHG\tEAX,EDX\n"); | |
6826 | } else { | |
6827 | DECODE_PRINTF("XCHG\tAX,DX\n"); | |
6828 | } | |
6829 | TRACE_AND_STEP(); | |
6830 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
6831 | tmp = M.x86.R_EAX; | |
6832 | M.x86.R_EAX = M.x86.R_EDX; | |
6833 | M.x86.R_EDX = tmp; | |
6834 | } else { | |
6835 | tmp = M.x86.R_AX; | |
6836 | M.x86.R_AX = M.x86.R_DX; | |
6837 | M.x86.R_DX = (u16)tmp; | |
6838 | } | |
6839 | DECODE_CLEAR_SEGOVR(); | |
6840 | END_OF_INSTR(); | |
6841 | } | |
6842 | ||
6843 | /**************************************************************************** | |
6844 | REMARKS: | |
6845 | Handles opcode 0x93 | |
6846 | ****************************************************************************/ | |
6847 | static void x86emuOp_xchg_word_AX_BX(u8 X86EMU_UNUSED(op1)) | |
6848 | { | |
6849 | u32 tmp; | |
6850 | ||
6851 | START_OF_INSTR(); | |
6852 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
6853 | DECODE_PRINTF("XCHG\tEAX,EBX\n"); | |
6854 | } else { | |
6855 | DECODE_PRINTF("XCHG\tAX,BX\n"); | |
6856 | } | |
6857 | TRACE_AND_STEP(); | |
6858 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
6859 | tmp = M.x86.R_EAX; | |
6860 | M.x86.R_EAX = M.x86.R_EBX; | |
6861 | M.x86.R_EBX = tmp; | |
6862 | } else { | |
6863 | tmp = M.x86.R_AX; | |
6864 | M.x86.R_AX = M.x86.R_BX; | |
6865 | M.x86.R_BX = (u16)tmp; | |
6866 | } | |
6867 | DECODE_CLEAR_SEGOVR(); | |
6868 | END_OF_INSTR(); | |
6869 | } | |
6870 | ||
6871 | /**************************************************************************** | |
6872 | REMARKS: | |
6873 | Handles opcode 0x94 | |
6874 | ****************************************************************************/ | |
6875 | static void x86emuOp_xchg_word_AX_SP(u8 X86EMU_UNUSED(op1)) | |
6876 | { | |
6877 | u32 tmp; | |
6878 | ||
6879 | START_OF_INSTR(); | |
6880 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
6881 | DECODE_PRINTF("XCHG\tEAX,ESP\n"); | |
6882 | } else { | |
6883 | DECODE_PRINTF("XCHG\tAX,SP\n"); | |
6884 | } | |
6885 | TRACE_AND_STEP(); | |
6886 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
6887 | tmp = M.x86.R_EAX; | |
6888 | M.x86.R_EAX = M.x86.R_ESP; | |
6889 | M.x86.R_ESP = tmp; | |
6890 | } else { | |
6891 | tmp = M.x86.R_AX; | |
6892 | M.x86.R_AX = M.x86.R_SP; | |
6893 | M.x86.R_SP = (u16)tmp; | |
6894 | } | |
6895 | DECODE_CLEAR_SEGOVR(); | |
6896 | END_OF_INSTR(); | |
6897 | } | |
6898 | ||
6899 | /**************************************************************************** | |
6900 | REMARKS: | |
6901 | Handles opcode 0x95 | |
6902 | ****************************************************************************/ | |
6903 | static void x86emuOp_xchg_word_AX_BP(u8 X86EMU_UNUSED(op1)) | |
6904 | { | |
6905 | u32 tmp; | |
6906 | ||
6907 | START_OF_INSTR(); | |
6908 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
6909 | DECODE_PRINTF("XCHG\tEAX,EBP\n"); | |
6910 | } else { | |
6911 | DECODE_PRINTF("XCHG\tAX,BP\n"); | |
6912 | } | |
6913 | TRACE_AND_STEP(); | |
6914 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
6915 | tmp = M.x86.R_EAX; | |
6916 | M.x86.R_EAX = M.x86.R_EBP; | |
6917 | M.x86.R_EBP = tmp; | |
6918 | } else { | |
6919 | tmp = M.x86.R_AX; | |
6920 | M.x86.R_AX = M.x86.R_BP; | |
6921 | M.x86.R_BP = (u16)tmp; | |
6922 | } | |
6923 | DECODE_CLEAR_SEGOVR(); | |
6924 | END_OF_INSTR(); | |
6925 | } | |
6926 | ||
6927 | /**************************************************************************** | |
6928 | REMARKS: | |
6929 | Handles opcode 0x96 | |
6930 | ****************************************************************************/ | |
6931 | static void x86emuOp_xchg_word_AX_SI(u8 X86EMU_UNUSED(op1)) | |
6932 | { | |
6933 | u32 tmp; | |
6934 | ||
6935 | START_OF_INSTR(); | |
6936 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
6937 | DECODE_PRINTF("XCHG\tEAX,ESI\n"); | |
6938 | } else { | |
6939 | DECODE_PRINTF("XCHG\tAX,SI\n"); | |
6940 | } | |
6941 | TRACE_AND_STEP(); | |
6942 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
6943 | tmp = M.x86.R_EAX; | |
6944 | M.x86.R_EAX = M.x86.R_ESI; | |
6945 | M.x86.R_ESI = tmp; | |
6946 | } else { | |
6947 | tmp = M.x86.R_AX; | |
6948 | M.x86.R_AX = M.x86.R_SI; | |
6949 | M.x86.R_SI = (u16)tmp; | |
6950 | } | |
6951 | DECODE_CLEAR_SEGOVR(); | |
6952 | END_OF_INSTR(); | |
6953 | } | |
6954 | ||
6955 | /**************************************************************************** | |
6956 | REMARKS: | |
6957 | Handles opcode 0x97 | |
6958 | ****************************************************************************/ | |
6959 | static void x86emuOp_xchg_word_AX_DI(u8 X86EMU_UNUSED(op1)) | |
6960 | { | |
6961 | u32 tmp; | |
6962 | ||
6963 | START_OF_INSTR(); | |
6964 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
6965 | DECODE_PRINTF("XCHG\tEAX,EDI\n"); | |
6966 | } else { | |
6967 | DECODE_PRINTF("XCHG\tAX,DI\n"); | |
6968 | } | |
6969 | TRACE_AND_STEP(); | |
6970 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
6971 | tmp = M.x86.R_EAX; | |
6972 | M.x86.R_EAX = M.x86.R_EDI; | |
6973 | M.x86.R_EDI = tmp; | |
6974 | } else { | |
6975 | tmp = M.x86.R_AX; | |
6976 | M.x86.R_AX = M.x86.R_DI; | |
6977 | M.x86.R_DI = (u16)tmp; | |
6978 | } | |
6979 | DECODE_CLEAR_SEGOVR(); | |
6980 | END_OF_INSTR(); | |
6981 | } | |
6982 | ||
6983 | /**************************************************************************** | |
6984 | REMARKS: | |
6985 | Handles opcode 0x98 | |
6986 | ****************************************************************************/ | |
6987 | static void x86emuOp_cbw(u8 X86EMU_UNUSED(op1)) | |
6988 | { | |
6989 | START_OF_INSTR(); | |
6990 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
6991 | DECODE_PRINTF("CWDE\n"); | |
6992 | } else { | |
6993 | DECODE_PRINTF("CBW\n"); | |
6994 | } | |
6995 | TRACE_AND_STEP(); | |
6996 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
6997 | if (M.x86.R_AX & 0x8000) { | |
6998 | M.x86.R_EAX |= 0xffff0000; | |
6999 | } else { | |
7000 | M.x86.R_EAX &= 0x0000ffff; | |
7001 | } | |
7002 | } else { | |
7003 | if (M.x86.R_AL & 0x80) { | |
7004 | M.x86.R_AH = 0xff; | |
7005 | } else { | |
7006 | M.x86.R_AH = 0x0; | |
7007 | } | |
7008 | } | |
7009 | DECODE_CLEAR_SEGOVR(); | |
7010 | END_OF_INSTR(); | |
7011 | } | |
7012 | ||
7013 | /**************************************************************************** | |
7014 | REMARKS: | |
7015 | Handles opcode 0x99 | |
7016 | ****************************************************************************/ | |
7017 | static void x86emuOp_cwd(u8 X86EMU_UNUSED(op1)) | |
7018 | { | |
7019 | START_OF_INSTR(); | |
7020 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
7021 | DECODE_PRINTF("CDQ\n"); | |
7022 | } else { | |
7023 | DECODE_PRINTF("CWD\n"); | |
7024 | } | |
7025 | DECODE_PRINTF("CWD\n"); | |
7026 | TRACE_AND_STEP(); | |
7027 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
7028 | if (M.x86.R_EAX & 0x80000000) { | |
7029 | M.x86.R_EDX = 0xffffffff; | |
7030 | } else { | |
7031 | M.x86.R_EDX = 0x0; | |
7032 | } | |
7033 | } else { | |
7034 | if (M.x86.R_AX & 0x8000) { | |
7035 | M.x86.R_DX = 0xffff; | |
7036 | } else { | |
7037 | M.x86.R_DX = 0x0; | |
7038 | } | |
7039 | } | |
7040 | DECODE_CLEAR_SEGOVR(); | |
7041 | END_OF_INSTR(); | |
7042 | } | |
7043 | ||
7044 | /**************************************************************************** | |
7045 | REMARKS: | |
7046 | Handles opcode 0x9a | |
7047 | ****************************************************************************/ | |
7048 | static void x86emuOp_call_far_IMM(u8 X86EMU_UNUSED(op1)) | |
7049 | { | |
7050 | u16 farseg, faroff; | |
7051 | ||
7052 | START_OF_INSTR(); | |
7053 | DECODE_PRINTF("CALL\t"); | |
7054 | faroff = fetch_word_imm(); | |
7055 | farseg = fetch_word_imm(); | |
7056 | DECODE_PRINTF2("%04x:", farseg); | |
7057 | DECODE_PRINTF2("%04x\n", faroff); | |
7058 | CALL_TRACE(M.x86.saved_cs, M.x86.saved_ip, farseg, faroff, "FAR "); | |
7059 | ||
7060 | /* XXX | |
7061 | * | |
7062 | * Hooked interrupt vectors calling into our "BIOS" will cause | |
7063 | * problems unless all intersegment stuff is checked for BIOS | |
7064 | * access. Check needed here. For moment, let it alone. | |
7065 | */ | |
7066 | TRACE_AND_STEP(); | |
7067 | push_word(M.x86.R_CS); | |
7068 | M.x86.R_CS = farseg; | |
7069 | push_word(M.x86.R_IP); | |
7070 | M.x86.R_IP = faroff; | |
7071 | DECODE_CLEAR_SEGOVR(); | |
7072 | END_OF_INSTR(); | |
7073 | } | |
7074 | ||
7075 | /**************************************************************************** | |
7076 | REMARKS: | |
7077 | Handles opcode 0x9b | |
7078 | ****************************************************************************/ | |
7079 | static void x86emuOp_wait(u8 X86EMU_UNUSED(op1)) | |
7080 | { | |
7081 | START_OF_INSTR(); | |
7082 | DECODE_PRINTF("WAIT"); | |
7083 | TRACE_AND_STEP(); | |
7084 | /* NADA. */ | |
7085 | DECODE_CLEAR_SEGOVR(); | |
7086 | END_OF_INSTR(); | |
7087 | } | |
7088 | ||
7089 | /**************************************************************************** | |
7090 | REMARKS: | |
7091 | Handles opcode 0x9c | |
7092 | ****************************************************************************/ | |
7093 | static void x86emuOp_pushf_word(u8 X86EMU_UNUSED(op1)) | |
7094 | { | |
7095 | u32 flags; | |
7096 | ||
7097 | START_OF_INSTR(); | |
7098 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
7099 | DECODE_PRINTF("PUSHFD\n"); | |
7100 | } else { | |
7101 | DECODE_PRINTF("PUSHF\n"); | |
7102 | } | |
7103 | TRACE_AND_STEP(); | |
7104 | ||
7105 | /* clear out *all* bits not representing flags, and turn on real bits */ | |
7106 | flags = (M.x86.R_EFLG & F_MSK) | F_ALWAYS_ON; | |
7107 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
7108 | push_long(flags); | |
7109 | } else { | |
7110 | push_word((u16)flags); | |
7111 | } | |
7112 | DECODE_CLEAR_SEGOVR(); | |
7113 | END_OF_INSTR(); | |
7114 | } | |
7115 | ||
7116 | /**************************************************************************** | |
7117 | REMARKS: | |
7118 | Handles opcode 0x9d | |
7119 | ****************************************************************************/ | |
7120 | static void x86emuOp_popf_word(u8 X86EMU_UNUSED(op1)) | |
7121 | { | |
7122 | START_OF_INSTR(); | |
7123 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
7124 | DECODE_PRINTF("POPFD\n"); | |
7125 | } else { | |
7126 | DECODE_PRINTF("POPF\n"); | |
7127 | } | |
7128 | TRACE_AND_STEP(); | |
7129 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
7130 | M.x86.R_EFLG = pop_long(); | |
7131 | } else { | |
7132 | M.x86.R_FLG = pop_word(); | |
7133 | } | |
7134 | DECODE_CLEAR_SEGOVR(); | |
7135 | END_OF_INSTR(); | |
7136 | } | |
7137 | ||
7138 | /**************************************************************************** | |
7139 | REMARKS: | |
7140 | Handles opcode 0x9e | |
7141 | ****************************************************************************/ | |
7142 | static void x86emuOp_sahf(u8 X86EMU_UNUSED(op1)) | |
7143 | { | |
7144 | START_OF_INSTR(); | |
7145 | DECODE_PRINTF("SAHF\n"); | |
7146 | TRACE_AND_STEP(); | |
7147 | /* clear the lower bits of the flag register */ | |
7148 | M.x86.R_FLG &= 0xffffff00; | |
7149 | /* or in the AH register into the flags register */ | |
7150 | M.x86.R_FLG |= M.x86.R_AH; | |
7151 | DECODE_CLEAR_SEGOVR(); | |
7152 | END_OF_INSTR(); | |
7153 | } | |
7154 | ||
7155 | /**************************************************************************** | |
7156 | REMARKS: | |
7157 | Handles opcode 0x9f | |
7158 | ****************************************************************************/ | |
7159 | static void x86emuOp_lahf(u8 X86EMU_UNUSED(op1)) | |
7160 | { | |
7161 | START_OF_INSTR(); | |
7162 | DECODE_PRINTF("LAHF\n"); | |
7163 | TRACE_AND_STEP(); | |
7164 | M.x86.R_AH = (u8)(M.x86.R_FLG & 0xff); | |
7165 | /*undocumented TC++ behavior??? Nope. It's documented, but | |
7166 | you have too look real hard to notice it. */ | |
7167 | M.x86.R_AH |= 0x2; | |
7168 | DECODE_CLEAR_SEGOVR(); | |
7169 | END_OF_INSTR(); | |
7170 | } | |
7171 | ||
7172 | /**************************************************************************** | |
7173 | REMARKS: | |
7174 | Handles opcode 0xa0 | |
7175 | ****************************************************************************/ | |
7176 | static void x86emuOp_mov_AL_M_IMM(u8 X86EMU_UNUSED(op1)) | |
7177 | { | |
7178 | u16 offset; | |
7179 | ||
7180 | START_OF_INSTR(); | |
7181 | DECODE_PRINTF("MOV\tAL,"); | |
7182 | offset = fetch_word_imm(); | |
7183 | DECODE_PRINTF2("[%04x]\n", offset); | |
7184 | TRACE_AND_STEP(); | |
7185 | M.x86.R_AL = fetch_data_byte(offset); | |
7186 | DECODE_CLEAR_SEGOVR(); | |
7187 | END_OF_INSTR(); | |
7188 | } | |
7189 | ||
7190 | /**************************************************************************** | |
7191 | REMARKS: | |
7192 | Handles opcode 0xa1 | |
7193 | ****************************************************************************/ | |
7194 | static void x86emuOp_mov_AX_M_IMM(u8 X86EMU_UNUSED(op1)) | |
7195 | { | |
7196 | u16 offset; | |
7197 | ||
7198 | START_OF_INSTR(); | |
7199 | offset = fetch_word_imm(); | |
7200 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
7201 | DECODE_PRINTF2("MOV\tEAX,[%04x]\n", offset); | |
7202 | } else { | |
7203 | DECODE_PRINTF2("MOV\tAX,[%04x]\n", offset); | |
7204 | } | |
7205 | TRACE_AND_STEP(); | |
7206 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
7207 | M.x86.R_EAX = fetch_data_long(offset); | |
7208 | } else { | |
7209 | M.x86.R_AX = fetch_data_word(offset); | |
7210 | } | |
7211 | DECODE_CLEAR_SEGOVR(); | |
7212 | END_OF_INSTR(); | |
7213 | } | |
7214 | ||
7215 | /**************************************************************************** | |
7216 | REMARKS: | |
7217 | Handles opcode 0xa2 | |
7218 | ****************************************************************************/ | |
7219 | static void x86emuOp_mov_M_AL_IMM(u8 X86EMU_UNUSED(op1)) | |
7220 | { | |
7221 | u16 offset; | |
7222 | ||
7223 | START_OF_INSTR(); | |
7224 | DECODE_PRINTF("MOV\t"); | |
7225 | offset = fetch_word_imm(); | |
7226 | DECODE_PRINTF2("[%04x],AL\n", offset); | |
7227 | TRACE_AND_STEP(); | |
7228 | store_data_byte(offset, M.x86.R_AL); | |
7229 | DECODE_CLEAR_SEGOVR(); | |
7230 | END_OF_INSTR(); | |
7231 | } | |
7232 | ||
7233 | /**************************************************************************** | |
7234 | REMARKS: | |
7235 | Handles opcode 0xa3 | |
7236 | ****************************************************************************/ | |
7237 | static void x86emuOp_mov_M_AX_IMM(u8 X86EMU_UNUSED(op1)) | |
7238 | { | |
7239 | u16 offset; | |
7240 | ||
7241 | START_OF_INSTR(); | |
7242 | offset = fetch_word_imm(); | |
7243 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
7244 | DECODE_PRINTF2("MOV\t[%04x],EAX\n", offset); | |
7245 | } else { | |
7246 | DECODE_PRINTF2("MOV\t[%04x],AX\n", offset); | |
7247 | } | |
7248 | TRACE_AND_STEP(); | |
7249 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
7250 | store_data_long(offset, M.x86.R_EAX); | |
7251 | } else { | |
7252 | store_data_word(offset, M.x86.R_AX); | |
7253 | } | |
7254 | DECODE_CLEAR_SEGOVR(); | |
7255 | END_OF_INSTR(); | |
7256 | } | |
7257 | ||
7258 | /**************************************************************************** | |
7259 | REMARKS: | |
7260 | Handles opcode 0xa4 | |
7261 | ****************************************************************************/ | |
7262 | static void x86emuOp_movs_byte(u8 X86EMU_UNUSED(op1)) | |
7263 | { | |
7264 | u8 val; | |
7265 | u32 count; | |
7266 | int inc; | |
7267 | ||
7268 | START_OF_INSTR(); | |
7269 | DECODE_PRINTF("MOVS\tBYTE\n"); | |
7270 | if (ACCESS_FLAG(F_DF)) /* down */ | |
7271 | inc = -1; | |
7272 | else | |
7273 | inc = 1; | |
7274 | TRACE_AND_STEP(); | |
7275 | count = 1; | |
7276 | if (M.x86.mode & (SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE)) { | |
7277 | /* dont care whether REPE or REPNE */ | |
7278 | /* move them until CX is ZERO. */ | |
7279 | count = M.x86.R_CX; | |
7280 | M.x86.R_CX = 0; | |
7281 | M.x86.mode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE); | |
7282 | } | |
7283 | while (count--) { | |
7284 | val = fetch_data_byte(M.x86.R_SI); | |
7285 | store_data_byte_abs(M.x86.R_ES, M.x86.R_DI, val); | |
7286 | M.x86.R_SI += inc; | |
7287 | M.x86.R_DI += inc; | |
7288 | } | |
7289 | DECODE_CLEAR_SEGOVR(); | |
7290 | END_OF_INSTR(); | |
7291 | } | |
7292 | ||
7293 | /**************************************************************************** | |
7294 | REMARKS: | |
7295 | Handles opcode 0xa5 | |
7296 | ****************************************************************************/ | |
7297 | static void x86emuOp_movs_word(u8 X86EMU_UNUSED(op1)) | |
7298 | { | |
7299 | u32 val; | |
7300 | int inc; | |
7301 | u32 count; | |
7302 | ||
7303 | START_OF_INSTR(); | |
7304 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
7305 | DECODE_PRINTF("MOVS\tDWORD\n"); | |
7306 | if (ACCESS_FLAG(F_DF)) /* down */ | |
7307 | inc = -4; | |
7308 | else | |
7309 | inc = 4; | |
7310 | } else { | |
7311 | DECODE_PRINTF("MOVS\tWORD\n"); | |
7312 | if (ACCESS_FLAG(F_DF)) /* down */ | |
7313 | inc = -2; | |
7314 | else | |
7315 | inc = 2; | |
7316 | } | |
7317 | TRACE_AND_STEP(); | |
7318 | count = 1; | |
7319 | if (M.x86.mode & (SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE)) { | |
7320 | /* dont care whether REPE or REPNE */ | |
7321 | /* move them until CX is ZERO. */ | |
7322 | count = M.x86.R_CX; | |
7323 | M.x86.R_CX = 0; | |
7324 | M.x86.mode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE); | |
7325 | } | |
7326 | while (count--) { | |
7327 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
7328 | val = fetch_data_long(M.x86.R_SI); | |
7329 | store_data_long_abs(M.x86.R_ES, M.x86.R_DI, val); | |
7330 | } else { | |
7331 | val = fetch_data_word(M.x86.R_SI); | |
7332 | store_data_word_abs(M.x86.R_ES, M.x86.R_DI, (u16)val); | |
7333 | } | |
7334 | M.x86.R_SI += inc; | |
7335 | M.x86.R_DI += inc; | |
7336 | } | |
7337 | DECODE_CLEAR_SEGOVR(); | |
7338 | END_OF_INSTR(); | |
7339 | } | |
7340 | ||
7341 | /**************************************************************************** | |
7342 | REMARKS: | |
7343 | Handles opcode 0xa6 | |
7344 | ****************************************************************************/ | |
7345 | static void x86emuOp_cmps_byte(u8 X86EMU_UNUSED(op1)) | |
7346 | { | |
7347 | s8 val1, val2; | |
7348 | int inc; | |
7349 | ||
7350 | START_OF_INSTR(); | |
7351 | DECODE_PRINTF("CMPS\tBYTE\n"); | |
7352 | TRACE_AND_STEP(); | |
7353 | if (ACCESS_FLAG(F_DF)) /* down */ | |
7354 | inc = -1; | |
7355 | else | |
7356 | inc = 1; | |
7357 | ||
7358 | if (M.x86.mode & SYSMODE_PREFIX_REPE) { | |
7359 | /* REPE */ | |
7360 | /* move them until CX is ZERO. */ | |
7361 | while (M.x86.R_CX != 0) { | |
7362 | val1 = fetch_data_byte(M.x86.R_SI); | |
7363 | val2 = fetch_data_byte_abs(M.x86.R_ES, M.x86.R_DI); | |
7364 | cmp_byte(val1, val2); | |
7365 | M.x86.R_CX -= 1; | |
7366 | M.x86.R_SI += inc; | |
7367 | M.x86.R_DI += inc; | |
7368 | if (ACCESS_FLAG(F_ZF) == 0) | |
7369 | break; | |
7370 | } | |
7371 | M.x86.mode &= ~SYSMODE_PREFIX_REPE; | |
7372 | } else if (M.x86.mode & SYSMODE_PREFIX_REPNE) { | |
7373 | /* REPNE */ | |
7374 | /* move them until CX is ZERO. */ | |
7375 | while (M.x86.R_CX != 0) { | |
7376 | val1 = fetch_data_byte(M.x86.R_SI); | |
7377 | val2 = fetch_data_byte_abs(M.x86.R_ES, M.x86.R_DI); | |
7378 | cmp_byte(val1, val2); | |
7379 | M.x86.R_CX -= 1; | |
7380 | M.x86.R_SI += inc; | |
7381 | M.x86.R_DI += inc; | |
7382 | if (ACCESS_FLAG(F_ZF)) | |
7383 | break; /* zero flag set means equal */ | |
7384 | } | |
7385 | M.x86.mode &= ~SYSMODE_PREFIX_REPNE; | |
7386 | } else { | |
7387 | val1 = fetch_data_byte(M.x86.R_SI); | |
7388 | val2 = fetch_data_byte_abs(M.x86.R_ES, M.x86.R_DI); | |
7389 | cmp_byte(val1, val2); | |
7390 | M.x86.R_SI += inc; | |
7391 | M.x86.R_DI += inc; | |
7392 | } | |
7393 | DECODE_CLEAR_SEGOVR(); | |
7394 | END_OF_INSTR(); | |
7395 | } | |
7396 | ||
7397 | /**************************************************************************** | |
7398 | REMARKS: | |
7399 | Handles opcode 0xa7 | |
7400 | ****************************************************************************/ | |
7401 | static void x86emuOp_cmps_word(u8 X86EMU_UNUSED(op1)) | |
7402 | { | |
7403 | u32 val1,val2; | |
7404 | int inc; | |
7405 | ||
7406 | START_OF_INSTR(); | |
7407 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
7408 | DECODE_PRINTF("CMPS\tDWORD\n"); | |
7409 | if (ACCESS_FLAG(F_DF)) /* down */ | |
7410 | inc = -4; | |
7411 | else | |
7412 | inc = 4; | |
7413 | } else { | |
7414 | DECODE_PRINTF("CMPS\tWORD\n"); | |
7415 | if (ACCESS_FLAG(F_DF)) /* down */ | |
7416 | inc = -2; | |
7417 | else | |
7418 | inc = 2; | |
7419 | } | |
7420 | TRACE_AND_STEP(); | |
7421 | if (M.x86.mode & SYSMODE_PREFIX_REPE) { | |
7422 | /* REPE */ | |
7423 | /* move them until CX is ZERO. */ | |
7424 | while (M.x86.R_CX != 0) { | |
7425 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
7426 | val1 = fetch_data_long(M.x86.R_SI); | |
7427 | val2 = fetch_data_long_abs(M.x86.R_ES, M.x86.R_DI); | |
7428 | cmp_long(val1, val2); | |
7429 | } else { | |
7430 | val1 = fetch_data_word(M.x86.R_SI); | |
7431 | val2 = fetch_data_word_abs(M.x86.R_ES, M.x86.R_DI); | |
7432 | cmp_word((u16)val1, (u16)val2); | |
7433 | } | |
7434 | M.x86.R_CX -= 1; | |
7435 | M.x86.R_SI += inc; | |
7436 | M.x86.R_DI += inc; | |
7437 | if (ACCESS_FLAG(F_ZF) == 0) | |
7438 | break; | |
7439 | } | |
7440 | M.x86.mode &= ~SYSMODE_PREFIX_REPE; | |
7441 | } else if (M.x86.mode & SYSMODE_PREFIX_REPNE) { | |
7442 | /* REPNE */ | |
7443 | /* move them until CX is ZERO. */ | |
7444 | while (M.x86.R_CX != 0) { | |
7445 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
7446 | val1 = fetch_data_long(M.x86.R_SI); | |
7447 | val2 = fetch_data_long_abs(M.x86.R_ES, M.x86.R_DI); | |
7448 | cmp_long(val1, val2); | |
7449 | } else { | |
7450 | val1 = fetch_data_word(M.x86.R_SI); | |
7451 | val2 = fetch_data_word_abs(M.x86.R_ES, M.x86.R_DI); | |
7452 | cmp_word((u16)val1, (u16)val2); | |
7453 | } | |
7454 | M.x86.R_CX -= 1; | |
7455 | M.x86.R_SI += inc; | |
7456 | M.x86.R_DI += inc; | |
7457 | if (ACCESS_FLAG(F_ZF)) | |
7458 | break; /* zero flag set means equal */ | |
7459 | } | |
7460 | M.x86.mode &= ~SYSMODE_PREFIX_REPNE; | |
7461 | } else { | |
7462 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
7463 | val1 = fetch_data_long(M.x86.R_SI); | |
7464 | val2 = fetch_data_long_abs(M.x86.R_ES, M.x86.R_DI); | |
7465 | cmp_long(val1, val2); | |
7466 | } else { | |
7467 | val1 = fetch_data_word(M.x86.R_SI); | |
7468 | val2 = fetch_data_word_abs(M.x86.R_ES, M.x86.R_DI); | |
7469 | cmp_word((u16)val1, (u16)val2); | |
7470 | } | |
7471 | M.x86.R_SI += inc; | |
7472 | M.x86.R_DI += inc; | |
7473 | } | |
7474 | DECODE_CLEAR_SEGOVR(); | |
7475 | END_OF_INSTR(); | |
7476 | } | |
7477 | ||
7478 | /**************************************************************************** | |
7479 | REMARKS: | |
7480 | Handles opcode 0xa8 | |
7481 | ****************************************************************************/ | |
7482 | static void x86emuOp_test_AL_IMM(u8 X86EMU_UNUSED(op1)) | |
7483 | { | |
7484 | int imm; | |
7485 | ||
7486 | START_OF_INSTR(); | |
7487 | DECODE_PRINTF("TEST\tAL,"); | |
7488 | imm = fetch_byte_imm(); | |
7489 | DECODE_PRINTF2("%04x\n", imm); | |
7490 | TRACE_AND_STEP(); | |
7491 | test_byte(M.x86.R_AL, (u8)imm); | |
7492 | DECODE_CLEAR_SEGOVR(); | |
7493 | END_OF_INSTR(); | |
7494 | } | |
7495 | ||
7496 | /**************************************************************************** | |
7497 | REMARKS: | |
7498 | Handles opcode 0xa9 | |
7499 | ****************************************************************************/ | |
7500 | static void x86emuOp_test_AX_IMM(u8 X86EMU_UNUSED(op1)) | |
7501 | { | |
7502 | u32 srcval; | |
7503 | ||
7504 | START_OF_INSTR(); | |
7505 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
7506 | DECODE_PRINTF("TEST\tEAX,"); | |
7507 | srcval = fetch_long_imm(); | |
7508 | } else { | |
7509 | DECODE_PRINTF("TEST\tAX,"); | |
7510 | srcval = fetch_word_imm(); | |
7511 | } | |
7512 | DECODE_PRINTF2("%x\n", srcval); | |
7513 | TRACE_AND_STEP(); | |
7514 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
7515 | test_long(M.x86.R_EAX, srcval); | |
7516 | } else { | |
7517 | test_word(M.x86.R_AX, (u16)srcval); | |
7518 | } | |
7519 | DECODE_CLEAR_SEGOVR(); | |
7520 | END_OF_INSTR(); | |
7521 | } | |
7522 | ||
7523 | /**************************************************************************** | |
7524 | REMARKS: | |
7525 | Handles opcode 0xaa | |
7526 | ****************************************************************************/ | |
7527 | static void x86emuOp_stos_byte(u8 X86EMU_UNUSED(op1)) | |
7528 | { | |
7529 | int inc; | |
7530 | ||
7531 | START_OF_INSTR(); | |
7532 | DECODE_PRINTF("STOS\tBYTE\n"); | |
7533 | if (ACCESS_FLAG(F_DF)) /* down */ | |
7534 | inc = -1; | |
7535 | else | |
7536 | inc = 1; | |
7537 | TRACE_AND_STEP(); | |
7538 | if (M.x86.mode & (SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE)) { | |
7539 | /* dont care whether REPE or REPNE */ | |
7540 | /* move them until CX is ZERO. */ | |
7541 | while (M.x86.R_CX != 0) { | |
7542 | store_data_byte_abs(M.x86.R_ES, M.x86.R_DI, M.x86.R_AL); | |
7543 | M.x86.R_CX -= 1; | |
7544 | M.x86.R_DI += inc; | |
7545 | } | |
7546 | M.x86.mode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE); | |
7547 | } else { | |
7548 | store_data_byte_abs(M.x86.R_ES, M.x86.R_DI, M.x86.R_AL); | |
7549 | M.x86.R_DI += inc; | |
7550 | } | |
7551 | DECODE_CLEAR_SEGOVR(); | |
7552 | END_OF_INSTR(); | |
7553 | } | |
7554 | ||
7555 | /**************************************************************************** | |
7556 | REMARKS: | |
7557 | Handles opcode 0xab | |
7558 | ****************************************************************************/ | |
7559 | static void x86emuOp_stos_word(u8 X86EMU_UNUSED(op1)) | |
7560 | { | |
7561 | int inc; | |
7562 | u32 count; | |
7563 | ||
7564 | START_OF_INSTR(); | |
7565 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
7566 | DECODE_PRINTF("STOS\tDWORD\n"); | |
7567 | if (ACCESS_FLAG(F_DF)) /* down */ | |
7568 | inc = -4; | |
7569 | else | |
7570 | inc = 4; | |
7571 | } else { | |
7572 | DECODE_PRINTF("STOS\tWORD\n"); | |
7573 | if (ACCESS_FLAG(F_DF)) /* down */ | |
7574 | inc = -2; | |
7575 | else | |
7576 | inc = 2; | |
7577 | } | |
7578 | TRACE_AND_STEP(); | |
7579 | count = 1; | |
7580 | if (M.x86.mode & (SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE)) { | |
7581 | /* dont care whether REPE or REPNE */ | |
7582 | /* move them until CX is ZERO. */ | |
7583 | count = M.x86.R_CX; | |
7584 | M.x86.R_CX = 0; | |
7585 | M.x86.mode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE); | |
7586 | } | |
7587 | while (count--) { | |
7588 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
7589 | store_data_long_abs(M.x86.R_ES, M.x86.R_DI, M.x86.R_EAX); | |
7590 | } else { | |
7591 | store_data_word_abs(M.x86.R_ES, M.x86.R_DI, M.x86.R_AX); | |
7592 | } | |
7593 | M.x86.R_DI += inc; | |
7594 | } | |
7595 | DECODE_CLEAR_SEGOVR(); | |
7596 | END_OF_INSTR(); | |
7597 | } | |
7598 | ||
7599 | /**************************************************************************** | |
7600 | REMARKS: | |
7601 | Handles opcode 0xac | |
7602 | ****************************************************************************/ | |
7603 | static void x86emuOp_lods_byte(u8 X86EMU_UNUSED(op1)) | |
7604 | { | |
7605 | int inc; | |
7606 | ||
7607 | START_OF_INSTR(); | |
7608 | DECODE_PRINTF("LODS\tBYTE\n"); | |
7609 | TRACE_AND_STEP(); | |
7610 | if (ACCESS_FLAG(F_DF)) /* down */ | |
7611 | inc = -1; | |
7612 | else | |
7613 | inc = 1; | |
7614 | if (M.x86.mode & (SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE)) { | |
7615 | /* dont care whether REPE or REPNE */ | |
7616 | /* move them until CX is ZERO. */ | |
7617 | while (M.x86.R_CX != 0) { | |
7618 | M.x86.R_AL = fetch_data_byte(M.x86.R_SI); | |
7619 | M.x86.R_CX -= 1; | |
7620 | M.x86.R_SI += inc; | |
7621 | } | |
7622 | M.x86.mode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE); | |
7623 | } else { | |
7624 | M.x86.R_AL = fetch_data_byte(M.x86.R_SI); | |
7625 | M.x86.R_SI += inc; | |
7626 | } | |
7627 | DECODE_CLEAR_SEGOVR(); | |
7628 | END_OF_INSTR(); | |
7629 | } | |
7630 | ||
7631 | /**************************************************************************** | |
7632 | REMARKS: | |
7633 | Handles opcode 0xad | |
7634 | ****************************************************************************/ | |
7635 | static void x86emuOp_lods_word(u8 X86EMU_UNUSED(op1)) | |
7636 | { | |
7637 | int inc; | |
7638 | u32 count; | |
7639 | ||
7640 | START_OF_INSTR(); | |
7641 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
7642 | DECODE_PRINTF("LODS\tDWORD\n"); | |
7643 | if (ACCESS_FLAG(F_DF)) /* down */ | |
7644 | inc = -4; | |
7645 | else | |
7646 | inc = 4; | |
7647 | } else { | |
7648 | DECODE_PRINTF("LODS\tWORD\n"); | |
7649 | if (ACCESS_FLAG(F_DF)) /* down */ | |
7650 | inc = -2; | |
7651 | else | |
7652 | inc = 2; | |
7653 | } | |
7654 | TRACE_AND_STEP(); | |
7655 | count = 1; | |
7656 | if (M.x86.mode & (SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE)) { | |
7657 | /* dont care whether REPE or REPNE */ | |
7658 | /* move them until CX is ZERO. */ | |
7659 | count = M.x86.R_CX; | |
7660 | M.x86.R_CX = 0; | |
7661 | M.x86.mode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE); | |
7662 | } | |
7663 | while (count--) { | |
7664 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
7665 | M.x86.R_EAX = fetch_data_long(M.x86.R_SI); | |
7666 | } else { | |
7667 | M.x86.R_AX = fetch_data_word(M.x86.R_SI); | |
7668 | } | |
7669 | M.x86.R_SI += inc; | |
7670 | } | |
7671 | DECODE_CLEAR_SEGOVR(); | |
7672 | END_OF_INSTR(); | |
7673 | } | |
7674 | ||
7675 | /**************************************************************************** | |
7676 | REMARKS: | |
7677 | Handles opcode 0xae | |
7678 | ****************************************************************************/ | |
7679 | static void x86emuOp_scas_byte(u8 X86EMU_UNUSED(op1)) | |
7680 | { | |
7681 | s8 val2; | |
7682 | int inc; | |
7683 | ||
7684 | START_OF_INSTR(); | |
7685 | DECODE_PRINTF("SCAS\tBYTE\n"); | |
7686 | TRACE_AND_STEP(); | |
7687 | if (ACCESS_FLAG(F_DF)) /* down */ | |
7688 | inc = -1; | |
7689 | else | |
7690 | inc = 1; | |
7691 | if (M.x86.mode & SYSMODE_PREFIX_REPE) { | |
7692 | /* REPE */ | |
7693 | /* move them until CX is ZERO. */ | |
7694 | while (M.x86.R_CX != 0) { | |
7695 | val2 = fetch_data_byte_abs(M.x86.R_ES, M.x86.R_DI); | |
7696 | cmp_byte(M.x86.R_AL, val2); | |
7697 | M.x86.R_CX -= 1; | |
7698 | M.x86.R_DI += inc; | |
7699 | if (ACCESS_FLAG(F_ZF) == 0) | |
7700 | break; | |
7701 | } | |
7702 | M.x86.mode &= ~SYSMODE_PREFIX_REPE; | |
7703 | } else if (M.x86.mode & SYSMODE_PREFIX_REPNE) { | |
7704 | /* REPNE */ | |
7705 | /* move them until CX is ZERO. */ | |
7706 | while (M.x86.R_CX != 0) { | |
7707 | val2 = fetch_data_byte_abs(M.x86.R_ES, M.x86.R_DI); | |
7708 | cmp_byte(M.x86.R_AL, val2); | |
7709 | M.x86.R_CX -= 1; | |
7710 | M.x86.R_DI += inc; | |
7711 | if (ACCESS_FLAG(F_ZF)) | |
7712 | break; /* zero flag set means equal */ | |
7713 | } | |
7714 | M.x86.mode &= ~SYSMODE_PREFIX_REPNE; | |
7715 | } else { | |
7716 | val2 = fetch_data_byte_abs(M.x86.R_ES, M.x86.R_DI); | |
7717 | cmp_byte(M.x86.R_AL, val2); | |
7718 | M.x86.R_DI += inc; | |
7719 | } | |
7720 | DECODE_CLEAR_SEGOVR(); | |
7721 | END_OF_INSTR(); | |
7722 | } | |
7723 | ||
7724 | /**************************************************************************** | |
7725 | REMARKS: | |
7726 | Handles opcode 0xaf | |
7727 | ****************************************************************************/ | |
7728 | static void x86emuOp_scas_word(u8 X86EMU_UNUSED(op1)) | |
7729 | { | |
7730 | int inc; | |
7731 | u32 val; | |
7732 | ||
7733 | START_OF_INSTR(); | |
7734 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
7735 | DECODE_PRINTF("SCAS\tDWORD\n"); | |
7736 | if (ACCESS_FLAG(F_DF)) /* down */ | |
7737 | inc = -4; | |
7738 | else | |
7739 | inc = 4; | |
7740 | } else { | |
7741 | DECODE_PRINTF("SCAS\tWORD\n"); | |
7742 | if (ACCESS_FLAG(F_DF)) /* down */ | |
7743 | inc = -2; | |
7744 | else | |
7745 | inc = 2; | |
7746 | } | |
7747 | TRACE_AND_STEP(); | |
7748 | if (M.x86.mode & SYSMODE_PREFIX_REPE) { | |
7749 | /* REPE */ | |
7750 | /* move them until CX is ZERO. */ | |
7751 | while (M.x86.R_CX != 0) { | |
7752 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
7753 | val = fetch_data_long_abs(M.x86.R_ES, M.x86.R_DI); | |
7754 | cmp_long(M.x86.R_EAX, val); | |
7755 | } else { | |
7756 | val = fetch_data_word_abs(M.x86.R_ES, M.x86.R_DI); | |
7757 | cmp_word(M.x86.R_AX, (u16)val); | |
7758 | } | |
7759 | M.x86.R_CX -= 1; | |
7760 | M.x86.R_DI += inc; | |
7761 | if (ACCESS_FLAG(F_ZF) == 0) | |
7762 | break; | |
7763 | } | |
7764 | M.x86.mode &= ~SYSMODE_PREFIX_REPE; | |
7765 | } else if (M.x86.mode & SYSMODE_PREFIX_REPNE) { | |
7766 | /* REPNE */ | |
7767 | /* move them until CX is ZERO. */ | |
7768 | while (M.x86.R_CX != 0) { | |
7769 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
7770 | val = fetch_data_long_abs(M.x86.R_ES, M.x86.R_DI); | |
7771 | cmp_long(M.x86.R_EAX, val); | |
7772 | } else { | |
7773 | val = fetch_data_word_abs(M.x86.R_ES, M.x86.R_DI); | |
7774 | cmp_word(M.x86.R_AX, (u16)val); | |
7775 | } | |
7776 | M.x86.R_CX -= 1; | |
7777 | M.x86.R_DI += inc; | |
7778 | if (ACCESS_FLAG(F_ZF)) | |
7779 | break; /* zero flag set means equal */ | |
7780 | } | |
7781 | M.x86.mode &= ~SYSMODE_PREFIX_REPNE; | |
7782 | } else { | |
7783 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
7784 | val = fetch_data_long_abs(M.x86.R_ES, M.x86.R_DI); | |
7785 | cmp_long(M.x86.R_EAX, val); | |
7786 | } else { | |
7787 | val = fetch_data_word_abs(M.x86.R_ES, M.x86.R_DI); | |
7788 | cmp_word(M.x86.R_AX, (u16)val); | |
7789 | } | |
7790 | M.x86.R_DI += inc; | |
7791 | } | |
7792 | DECODE_CLEAR_SEGOVR(); | |
7793 | END_OF_INSTR(); | |
7794 | } | |
7795 | ||
7796 | /**************************************************************************** | |
7797 | REMARKS: | |
7798 | Handles opcode 0xb0 | |
7799 | ****************************************************************************/ | |
7800 | static void x86emuOp_mov_byte_AL_IMM(u8 X86EMU_UNUSED(op1)) | |
7801 | { | |
7802 | u8 imm; | |
7803 | ||
7804 | START_OF_INSTR(); | |
7805 | DECODE_PRINTF("MOV\tAL,"); | |
7806 | imm = fetch_byte_imm(); | |
7807 | DECODE_PRINTF2("%x\n", imm); | |
7808 | TRACE_AND_STEP(); | |
7809 | M.x86.R_AL = imm; | |
7810 | DECODE_CLEAR_SEGOVR(); | |
7811 | END_OF_INSTR(); | |
7812 | } | |
7813 | ||
7814 | /**************************************************************************** | |
7815 | REMARKS: | |
7816 | Handles opcode 0xb1 | |
7817 | ****************************************************************************/ | |
7818 | static void x86emuOp_mov_byte_CL_IMM(u8 X86EMU_UNUSED(op1)) | |
7819 | { | |
7820 | u8 imm; | |
7821 | ||
7822 | START_OF_INSTR(); | |
7823 | DECODE_PRINTF("MOV\tCL,"); | |
7824 | imm = fetch_byte_imm(); | |
7825 | DECODE_PRINTF2("%x\n", imm); | |
7826 | TRACE_AND_STEP(); | |
7827 | M.x86.R_CL = imm; | |
7828 | DECODE_CLEAR_SEGOVR(); | |
7829 | END_OF_INSTR(); | |
7830 | } | |
7831 | ||
7832 | /**************************************************************************** | |
7833 | REMARKS: | |
7834 | Handles opcode 0xb2 | |
7835 | ****************************************************************************/ | |
7836 | static void x86emuOp_mov_byte_DL_IMM(u8 X86EMU_UNUSED(op1)) | |
7837 | { | |
7838 | u8 imm; | |
7839 | ||
7840 | START_OF_INSTR(); | |
7841 | DECODE_PRINTF("MOV\tDL,"); | |
7842 | imm = fetch_byte_imm(); | |
7843 | DECODE_PRINTF2("%x\n", imm); | |
7844 | TRACE_AND_STEP(); | |
7845 | M.x86.R_DL = imm; | |
7846 | DECODE_CLEAR_SEGOVR(); | |
7847 | END_OF_INSTR(); | |
7848 | } | |
7849 | ||
7850 | /**************************************************************************** | |
7851 | REMARKS: | |
7852 | Handles opcode 0xb3 | |
7853 | ****************************************************************************/ | |
7854 | static void x86emuOp_mov_byte_BL_IMM(u8 X86EMU_UNUSED(op1)) | |
7855 | { | |
7856 | u8 imm; | |
7857 | ||
7858 | START_OF_INSTR(); | |
7859 | DECODE_PRINTF("MOV\tBL,"); | |
7860 | imm = fetch_byte_imm(); | |
7861 | DECODE_PRINTF2("%x\n", imm); | |
7862 | TRACE_AND_STEP(); | |
7863 | M.x86.R_BL = imm; | |
7864 | DECODE_CLEAR_SEGOVR(); | |
7865 | END_OF_INSTR(); | |
7866 | } | |
7867 | ||
7868 | /**************************************************************************** | |
7869 | REMARKS: | |
7870 | Handles opcode 0xb4 | |
7871 | ****************************************************************************/ | |
7872 | static void x86emuOp_mov_byte_AH_IMM(u8 X86EMU_UNUSED(op1)) | |
7873 | { | |
7874 | u8 imm; | |
7875 | ||
7876 | START_OF_INSTR(); | |
7877 | DECODE_PRINTF("MOV\tAH,"); | |
7878 | imm = fetch_byte_imm(); | |
7879 | DECODE_PRINTF2("%x\n", imm); | |
7880 | TRACE_AND_STEP(); | |
7881 | M.x86.R_AH = imm; | |
7882 | DECODE_CLEAR_SEGOVR(); | |
7883 | END_OF_INSTR(); | |
7884 | } | |
7885 | ||
7886 | /**************************************************************************** | |
7887 | REMARKS: | |
7888 | Handles opcode 0xb5 | |
7889 | ****************************************************************************/ | |
7890 | static void x86emuOp_mov_byte_CH_IMM(u8 X86EMU_UNUSED(op1)) | |
7891 | { | |
7892 | u8 imm; | |
7893 | ||
7894 | START_OF_INSTR(); | |
7895 | DECODE_PRINTF("MOV\tCH,"); | |
7896 | imm = fetch_byte_imm(); | |
7897 | DECODE_PRINTF2("%x\n", imm); | |
7898 | TRACE_AND_STEP(); | |
7899 | M.x86.R_CH = imm; | |
7900 | DECODE_CLEAR_SEGOVR(); | |
7901 | END_OF_INSTR(); | |
7902 | } | |
7903 | ||
7904 | /**************************************************************************** | |
7905 | REMARKS: | |
7906 | Handles opcode 0xb6 | |
7907 | ****************************************************************************/ | |
7908 | static void x86emuOp_mov_byte_DH_IMM(u8 X86EMU_UNUSED(op1)) | |
7909 | { | |
7910 | u8 imm; | |
7911 | ||
7912 | START_OF_INSTR(); | |
7913 | DECODE_PRINTF("MOV\tDH,"); | |
7914 | imm = fetch_byte_imm(); | |
7915 | DECODE_PRINTF2("%x\n", imm); | |
7916 | TRACE_AND_STEP(); | |
7917 | M.x86.R_DH = imm; | |
7918 | DECODE_CLEAR_SEGOVR(); | |
7919 | END_OF_INSTR(); | |
7920 | } | |
7921 | ||
7922 | /**************************************************************************** | |
7923 | REMARKS: | |
7924 | Handles opcode 0xb7 | |
7925 | ****************************************************************************/ | |
7926 | static void x86emuOp_mov_byte_BH_IMM(u8 X86EMU_UNUSED(op1)) | |
7927 | { | |
7928 | u8 imm; | |
7929 | ||
7930 | START_OF_INSTR(); | |
7931 | DECODE_PRINTF("MOV\tBH,"); | |
7932 | imm = fetch_byte_imm(); | |
7933 | DECODE_PRINTF2("%x\n", imm); | |
7934 | TRACE_AND_STEP(); | |
7935 | M.x86.R_BH = imm; | |
7936 | DECODE_CLEAR_SEGOVR(); | |
7937 | END_OF_INSTR(); | |
7938 | } | |
7939 | ||
7940 | /**************************************************************************** | |
7941 | REMARKS: | |
7942 | Handles opcode 0xb8 | |
7943 | ****************************************************************************/ | |
7944 | static void x86emuOp_mov_word_AX_IMM(u8 X86EMU_UNUSED(op1)) | |
7945 | { | |
7946 | u32 srcval; | |
7947 | ||
7948 | START_OF_INSTR(); | |
7949 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
7950 | DECODE_PRINTF("MOV\tEAX,"); | |
7951 | srcval = fetch_long_imm(); | |
7952 | } else { | |
7953 | DECODE_PRINTF("MOV\tAX,"); | |
7954 | srcval = fetch_word_imm(); | |
7955 | } | |
7956 | DECODE_PRINTF2("%x\n", srcval); | |
7957 | TRACE_AND_STEP(); | |
7958 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
7959 | M.x86.R_EAX = srcval; | |
7960 | } else { | |
7961 | M.x86.R_AX = (u16)srcval; | |
7962 | } | |
7963 | DECODE_CLEAR_SEGOVR(); | |
7964 | END_OF_INSTR(); | |
7965 | } | |
7966 | ||
7967 | /**************************************************************************** | |
7968 | REMARKS: | |
7969 | Handles opcode 0xb9 | |
7970 | ****************************************************************************/ | |
7971 | static void x86emuOp_mov_word_CX_IMM(u8 X86EMU_UNUSED(op1)) | |
7972 | { | |
7973 | u32 srcval; | |
7974 | ||
7975 | START_OF_INSTR(); | |
7976 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
7977 | DECODE_PRINTF("MOV\tECX,"); | |
7978 | srcval = fetch_long_imm(); | |
7979 | } else { | |
7980 | DECODE_PRINTF("MOV\tCX,"); | |
7981 | srcval = fetch_word_imm(); | |
7982 | } | |
7983 | DECODE_PRINTF2("%x\n", srcval); | |
7984 | TRACE_AND_STEP(); | |
7985 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
7986 | M.x86.R_ECX = srcval; | |
7987 | } else { | |
7988 | M.x86.R_CX = (u16)srcval; | |
7989 | } | |
7990 | DECODE_CLEAR_SEGOVR(); | |
7991 | END_OF_INSTR(); | |
7992 | } | |
7993 | ||
7994 | /**************************************************************************** | |
7995 | REMARKS: | |
7996 | Handles opcode 0xba | |
7997 | ****************************************************************************/ | |
7998 | static void x86emuOp_mov_word_DX_IMM(u8 X86EMU_UNUSED(op1)) | |
7999 | { | |
8000 | u32 srcval; | |
8001 | ||
8002 | START_OF_INSTR(); | |
8003 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
8004 | DECODE_PRINTF("MOV\tEDX,"); | |
8005 | srcval = fetch_long_imm(); | |
8006 | } else { | |
8007 | DECODE_PRINTF("MOV\tDX,"); | |
8008 | srcval = fetch_word_imm(); | |
8009 | } | |
8010 | DECODE_PRINTF2("%x\n", srcval); | |
8011 | TRACE_AND_STEP(); | |
8012 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
8013 | M.x86.R_EDX = srcval; | |
8014 | } else { | |
8015 | M.x86.R_DX = (u16)srcval; | |
8016 | } | |
8017 | DECODE_CLEAR_SEGOVR(); | |
8018 | END_OF_INSTR(); | |
8019 | } | |
8020 | ||
8021 | /**************************************************************************** | |
8022 | REMARKS: | |
8023 | Handles opcode 0xbb | |
8024 | ****************************************************************************/ | |
8025 | static void x86emuOp_mov_word_BX_IMM(u8 X86EMU_UNUSED(op1)) | |
8026 | { | |
8027 | u32 srcval; | |
8028 | ||
8029 | START_OF_INSTR(); | |
8030 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
8031 | DECODE_PRINTF("MOV\tEBX,"); | |
8032 | srcval = fetch_long_imm(); | |
8033 | } else { | |
8034 | DECODE_PRINTF("MOV\tBX,"); | |
8035 | srcval = fetch_word_imm(); | |
8036 | } | |
8037 | DECODE_PRINTF2("%x\n", srcval); | |
8038 | TRACE_AND_STEP(); | |
8039 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
8040 | M.x86.R_EBX = srcval; | |
8041 | } else { | |
8042 | M.x86.R_BX = (u16)srcval; | |
8043 | } | |
8044 | DECODE_CLEAR_SEGOVR(); | |
8045 | END_OF_INSTR(); | |
8046 | } | |
8047 | ||
8048 | /**************************************************************************** | |
8049 | REMARKS: | |
8050 | Handles opcode 0xbc | |
8051 | ****************************************************************************/ | |
8052 | static void x86emuOp_mov_word_SP_IMM(u8 X86EMU_UNUSED(op1)) | |
8053 | { | |
8054 | u32 srcval; | |
8055 | ||
8056 | START_OF_INSTR(); | |
8057 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
8058 | DECODE_PRINTF("MOV\tESP,"); | |
8059 | srcval = fetch_long_imm(); | |
8060 | } else { | |
8061 | DECODE_PRINTF("MOV\tSP,"); | |
8062 | srcval = fetch_word_imm(); | |
8063 | } | |
8064 | DECODE_PRINTF2("%x\n", srcval); | |
8065 | TRACE_AND_STEP(); | |
8066 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
8067 | M.x86.R_ESP = srcval; | |
8068 | } else { | |
8069 | M.x86.R_SP = (u16)srcval; | |
8070 | } | |
8071 | DECODE_CLEAR_SEGOVR(); | |
8072 | END_OF_INSTR(); | |
8073 | } | |
8074 | ||
8075 | /**************************************************************************** | |
8076 | REMARKS: | |
8077 | Handles opcode 0xbd | |
8078 | ****************************************************************************/ | |
8079 | static void x86emuOp_mov_word_BP_IMM(u8 X86EMU_UNUSED(op1)) | |
8080 | { | |
8081 | u32 srcval; | |
8082 | ||
8083 | START_OF_INSTR(); | |
8084 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
8085 | DECODE_PRINTF("MOV\tEBP,"); | |
8086 | srcval = fetch_long_imm(); | |
8087 | } else { | |
8088 | DECODE_PRINTF("MOV\tBP,"); | |
8089 | srcval = fetch_word_imm(); | |
8090 | } | |
8091 | DECODE_PRINTF2("%x\n", srcval); | |
8092 | TRACE_AND_STEP(); | |
8093 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
8094 | M.x86.R_EBP = srcval; | |
8095 | } else { | |
8096 | M.x86.R_BP = (u16)srcval; | |
8097 | } | |
8098 | DECODE_CLEAR_SEGOVR(); | |
8099 | END_OF_INSTR(); | |
8100 | } | |
8101 | ||
8102 | /**************************************************************************** | |
8103 | REMARKS: | |
8104 | Handles opcode 0xbe | |
8105 | ****************************************************************************/ | |
8106 | static void x86emuOp_mov_word_SI_IMM(u8 X86EMU_UNUSED(op1)) | |
8107 | { | |
8108 | u32 srcval; | |
8109 | ||
8110 | START_OF_INSTR(); | |
8111 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
8112 | DECODE_PRINTF("MOV\tESI,"); | |
8113 | srcval = fetch_long_imm(); | |
8114 | } else { | |
8115 | DECODE_PRINTF("MOV\tSI,"); | |
8116 | srcval = fetch_word_imm(); | |
8117 | } | |
8118 | DECODE_PRINTF2("%x\n", srcval); | |
8119 | TRACE_AND_STEP(); | |
8120 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
8121 | M.x86.R_ESI = srcval; | |
8122 | } else { | |
8123 | M.x86.R_SI = (u16)srcval; | |
8124 | } | |
8125 | DECODE_CLEAR_SEGOVR(); | |
8126 | END_OF_INSTR(); | |
8127 | } | |
8128 | ||
8129 | /**************************************************************************** | |
8130 | REMARKS: | |
8131 | Handles opcode 0xbf | |
8132 | ****************************************************************************/ | |
8133 | static void x86emuOp_mov_word_DI_IMM(u8 X86EMU_UNUSED(op1)) | |
8134 | { | |
8135 | u32 srcval; | |
8136 | ||
8137 | START_OF_INSTR(); | |
8138 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
8139 | DECODE_PRINTF("MOV\tEDI,"); | |
8140 | srcval = fetch_long_imm(); | |
8141 | } else { | |
8142 | DECODE_PRINTF("MOV\tDI,"); | |
8143 | srcval = fetch_word_imm(); | |
8144 | } | |
8145 | DECODE_PRINTF2("%x\n", srcval); | |
8146 | TRACE_AND_STEP(); | |
8147 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
8148 | M.x86.R_EDI = srcval; | |
8149 | } else { | |
8150 | M.x86.R_DI = (u16)srcval; | |
8151 | } | |
8152 | DECODE_CLEAR_SEGOVR(); | |
8153 | END_OF_INSTR(); | |
8154 | } | |
8155 | ||
8156 | /* used by opcodes c0, d0, and d2. */ | |
8157 | static u8(*opcD0_byte_operation[])(u8 d, u8 s) = | |
8158 | { | |
8159 | rol_byte, | |
8160 | ror_byte, | |
8161 | rcl_byte, | |
8162 | rcr_byte, | |
8163 | shl_byte, | |
8164 | shr_byte, | |
8165 | shl_byte, /* sal_byte === shl_byte by definition */ | |
8166 | sar_byte, | |
8167 | }; | |
8168 | ||
8169 | /**************************************************************************** | |
8170 | REMARKS: | |
8171 | Handles opcode 0xc0 | |
8172 | ****************************************************************************/ | |
8173 | static void x86emuOp_opcC0_byte_RM_MEM(u8 X86EMU_UNUSED(op1)) | |
8174 | { | |
8175 | int mod, rl, rh; | |
8176 | u8 *destreg; | |
8177 | uint destoffset; | |
8178 | u8 destval; | |
8179 | u8 amt; | |
8180 | ||
8181 | /* | |
8182 | * Yet another weirdo special case instruction format. Part of | |
8183 | * the opcode held below in "RH". Doubly nested case would | |
8184 | * result, except that the decoded instruction | |
8185 | */ | |
8186 | START_OF_INSTR(); | |
8187 | FETCH_DECODE_MODRM(mod, rh, rl); | |
8188 | #ifdef DEBUG | |
8189 | if (DEBUG_DECODE()) { | |
8190 | /* XXX DECODE_PRINTF may be changed to something more | |
8191 | general, so that it is important to leave the strings | |
8192 | in the same format, even though the result is that the | |
8193 | above test is done twice. */ | |
8194 | ||
8195 | switch (rh) { | |
8196 | case 0: | |
8197 | DECODE_PRINTF("ROL\t"); | |
8198 | break; | |
8199 | case 1: | |
8200 | DECODE_PRINTF("ROR\t"); | |
8201 | break; | |
8202 | case 2: | |
8203 | DECODE_PRINTF("RCL\t"); | |
8204 | break; | |
8205 | case 3: | |
8206 | DECODE_PRINTF("RCR\t"); | |
8207 | break; | |
8208 | case 4: | |
8209 | DECODE_PRINTF("SHL\t"); | |
8210 | break; | |
8211 | case 5: | |
8212 | DECODE_PRINTF("SHR\t"); | |
8213 | break; | |
8214 | case 6: | |
8215 | DECODE_PRINTF("SAL\t"); | |
8216 | break; | |
8217 | case 7: | |
8218 | DECODE_PRINTF("SAR\t"); | |
8219 | break; | |
8220 | } | |
8221 | } | |
8222 | #endif | |
8223 | /* know operation, decode the mod byte to find the addressing | |
8224 | mode. */ | |
8225 | switch (mod) { | |
8226 | case 0: | |
8227 | DECODE_PRINTF("BYTE PTR "); | |
8228 | destoffset = decode_rm00_address(rl); | |
8229 | amt = fetch_byte_imm(); | |
8230 | DECODE_PRINTF2(",%x\n", amt); | |
8231 | destval = fetch_data_byte(destoffset); | |
8232 | TRACE_AND_STEP(); | |
8233 | destval = (*opcD0_byte_operation[rh]) (destval, amt); | |
8234 | store_data_byte(destoffset, destval); | |
8235 | break; | |
8236 | case 1: | |
8237 | DECODE_PRINTF("BYTE PTR "); | |
8238 | destoffset = decode_rm01_address(rl); | |
8239 | amt = fetch_byte_imm(); | |
8240 | DECODE_PRINTF2(",%x\n", amt); | |
8241 | destval = fetch_data_byte(destoffset); | |
8242 | TRACE_AND_STEP(); | |
8243 | destval = (*opcD0_byte_operation[rh]) (destval, amt); | |
8244 | store_data_byte(destoffset, destval); | |
8245 | break; | |
8246 | case 2: | |
8247 | DECODE_PRINTF("BYTE PTR "); | |
8248 | destoffset = decode_rm10_address(rl); | |
8249 | amt = fetch_byte_imm(); | |
8250 | DECODE_PRINTF2(",%x\n", amt); | |
8251 | destval = fetch_data_byte(destoffset); | |
8252 | TRACE_AND_STEP(); | |
8253 | destval = (*opcD0_byte_operation[rh]) (destval, amt); | |
8254 | store_data_byte(destoffset, destval); | |
8255 | break; | |
8256 | case 3: /* register to register */ | |
8257 | destreg = DECODE_RM_BYTE_REGISTER(rl); | |
8258 | amt = fetch_byte_imm(); | |
8259 | DECODE_PRINTF2(",%x\n", amt); | |
8260 | TRACE_AND_STEP(); | |
8261 | destval = (*opcD0_byte_operation[rh]) (*destreg, amt); | |
8262 | *destreg = destval; | |
8263 | break; | |
8264 | } | |
8265 | DECODE_CLEAR_SEGOVR(); | |
8266 | END_OF_INSTR(); | |
8267 | } | |
8268 | ||
8269 | /* used by opcodes c1, d1, and d3. */ | |
8270 | static u16(*opcD1_word_operation[])(u16 s, u8 d) = | |
8271 | { | |
8272 | rol_word, | |
8273 | ror_word, | |
8274 | rcl_word, | |
8275 | rcr_word, | |
8276 | shl_word, | |
8277 | shr_word, | |
8278 | shl_word, /* sal_byte === shl_byte by definition */ | |
8279 | sar_word, | |
8280 | }; | |
8281 | ||
8282 | /* used by opcodes c1, d1, and d3. */ | |
8283 | static u32 (*opcD1_long_operation[])(u32 s, u8 d) = | |
8284 | { | |
8285 | rol_long, | |
8286 | ror_long, | |
8287 | rcl_long, | |
8288 | rcr_long, | |
8289 | shl_long, | |
8290 | shr_long, | |
8291 | shl_long, /* sal_byte === shl_byte by definition */ | |
8292 | sar_long, | |
8293 | }; | |
8294 | ||
8295 | /**************************************************************************** | |
8296 | REMARKS: | |
8297 | Handles opcode 0xc1 | |
8298 | ****************************************************************************/ | |
8299 | static void x86emuOp_opcC1_word_RM_MEM(u8 X86EMU_UNUSED(op1)) | |
8300 | { | |
8301 | int mod, rl, rh; | |
8302 | uint destoffset; | |
8303 | u8 amt; | |
8304 | ||
8305 | /* | |
8306 | * Yet another weirdo special case instruction format. Part of | |
8307 | * the opcode held below in "RH". Doubly nested case would | |
8308 | * result, except that the decoded instruction | |
8309 | */ | |
8310 | START_OF_INSTR(); | |
8311 | FETCH_DECODE_MODRM(mod, rh, rl); | |
8312 | #ifdef DEBUG | |
8313 | if (DEBUG_DECODE()) { | |
8314 | /* XXX DECODE_PRINTF may be changed to something more | |
8315 | general, so that it is important to leave the strings | |
8316 | in the same format, even though the result is that the | |
8317 | above test is done twice. */ | |
8318 | ||
8319 | switch (rh) { | |
8320 | case 0: | |
8321 | DECODE_PRINTF("ROL\t"); | |
8322 | break; | |
8323 | case 1: | |
8324 | DECODE_PRINTF("ROR\t"); | |
8325 | break; | |
8326 | case 2: | |
8327 | DECODE_PRINTF("RCL\t"); | |
8328 | break; | |
8329 | case 3: | |
8330 | DECODE_PRINTF("RCR\t"); | |
8331 | break; | |
8332 | case 4: | |
8333 | DECODE_PRINTF("SHL\t"); | |
8334 | break; | |
8335 | case 5: | |
8336 | DECODE_PRINTF("SHR\t"); | |
8337 | break; | |
8338 | case 6: | |
8339 | DECODE_PRINTF("SAL\t"); | |
8340 | break; | |
8341 | case 7: | |
8342 | DECODE_PRINTF("SAR\t"); | |
8343 | break; | |
8344 | } | |
8345 | } | |
8346 | #endif | |
8347 | /* know operation, decode the mod byte to find the addressing | |
8348 | mode. */ | |
8349 | switch (mod) { | |
8350 | case 0: | |
8351 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
8352 | u32 destval; | |
8353 | ||
8354 | DECODE_PRINTF("DWORD PTR "); | |
8355 | destoffset = decode_rm00_address(rl); | |
8356 | amt = fetch_byte_imm(); | |
8357 | DECODE_PRINTF2(",%x\n", amt); | |
8358 | destval = fetch_data_long(destoffset); | |
8359 | TRACE_AND_STEP(); | |
8360 | destval = (*opcD1_long_operation[rh]) (destval, amt); | |
8361 | store_data_long(destoffset, destval); | |
8362 | } else { | |
8363 | u16 destval; | |
8364 | ||
8365 | DECODE_PRINTF("WORD PTR "); | |
8366 | destoffset = decode_rm00_address(rl); | |
8367 | amt = fetch_byte_imm(); | |
8368 | DECODE_PRINTF2(",%x\n", amt); | |
8369 | destval = fetch_data_word(destoffset); | |
8370 | TRACE_AND_STEP(); | |
8371 | destval = (*opcD1_word_operation[rh]) (destval, amt); | |
8372 | store_data_word(destoffset, destval); | |
8373 | } | |
8374 | break; | |
8375 | case 1: | |
8376 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
8377 | u32 destval; | |
8378 | ||
8379 | DECODE_PRINTF("DWORD PTR "); | |
8380 | destoffset = decode_rm01_address(rl); | |
8381 | amt = fetch_byte_imm(); | |
8382 | DECODE_PRINTF2(",%x\n", amt); | |
8383 | destval = fetch_data_long(destoffset); | |
8384 | TRACE_AND_STEP(); | |
8385 | destval = (*opcD1_long_operation[rh]) (destval, amt); | |
8386 | store_data_long(destoffset, destval); | |
8387 | } else { | |
8388 | u16 destval; | |
8389 | ||
8390 | DECODE_PRINTF("WORD PTR "); | |
8391 | destoffset = decode_rm01_address(rl); | |
8392 | amt = fetch_byte_imm(); | |
8393 | DECODE_PRINTF2(",%x\n", amt); | |
8394 | destval = fetch_data_word(destoffset); | |
8395 | TRACE_AND_STEP(); | |
8396 | destval = (*opcD1_word_operation[rh]) (destval, amt); | |
8397 | store_data_word(destoffset, destval); | |
8398 | } | |
8399 | break; | |
8400 | case 2: | |
8401 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
8402 | u32 destval; | |
8403 | ||
8404 | DECODE_PRINTF("DWORD PTR "); | |
8405 | destoffset = decode_rm10_address(rl); | |
8406 | amt = fetch_byte_imm(); | |
8407 | DECODE_PRINTF2(",%x\n", amt); | |
8408 | destval = fetch_data_long(destoffset); | |
8409 | TRACE_AND_STEP(); | |
8410 | destval = (*opcD1_long_operation[rh]) (destval, amt); | |
8411 | store_data_long(destoffset, destval); | |
8412 | } else { | |
8413 | u16 destval; | |
8414 | ||
8415 | DECODE_PRINTF("WORD PTR "); | |
8416 | destoffset = decode_rm10_address(rl); | |
8417 | amt = fetch_byte_imm(); | |
8418 | DECODE_PRINTF2(",%x\n", amt); | |
8419 | destval = fetch_data_word(destoffset); | |
8420 | TRACE_AND_STEP(); | |
8421 | destval = (*opcD1_word_operation[rh]) (destval, amt); | |
8422 | store_data_word(destoffset, destval); | |
8423 | } | |
8424 | break; | |
8425 | case 3: /* register to register */ | |
8426 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
8427 | u32 *destreg; | |
8428 | ||
8429 | destreg = DECODE_RM_LONG_REGISTER(rl); | |
8430 | amt = fetch_byte_imm(); | |
8431 | DECODE_PRINTF2(",%x\n", amt); | |
8432 | TRACE_AND_STEP(); | |
8433 | *destreg = (*opcD1_long_operation[rh]) (*destreg, amt); | |
8434 | } else { | |
8435 | u16 *destreg; | |
8436 | ||
8437 | destreg = DECODE_RM_WORD_REGISTER(rl); | |
8438 | amt = fetch_byte_imm(); | |
8439 | DECODE_PRINTF2(",%x\n", amt); | |
8440 | TRACE_AND_STEP(); | |
8441 | *destreg = (*opcD1_word_operation[rh]) (*destreg, amt); | |
8442 | } | |
8443 | break; | |
8444 | } | |
8445 | DECODE_CLEAR_SEGOVR(); | |
8446 | END_OF_INSTR(); | |
8447 | } | |
8448 | ||
8449 | /**************************************************************************** | |
8450 | REMARKS: | |
8451 | Handles opcode 0xc2 | |
8452 | ****************************************************************************/ | |
8453 | static void x86emuOp_ret_near_IMM(u8 X86EMU_UNUSED(op1)) | |
8454 | { | |
8455 | u16 imm; | |
8456 | ||
8457 | START_OF_INSTR(); | |
8458 | DECODE_PRINTF("RET\t"); | |
8459 | imm = fetch_word_imm(); | |
8460 | DECODE_PRINTF2("%x\n", imm); | |
8461 | RETURN_TRACE("RET",M.x86.saved_cs,M.x86.saved_ip); | |
8462 | TRACE_AND_STEP(); | |
8463 | M.x86.R_IP = pop_word(); | |
8464 | M.x86.R_SP += imm; | |
8465 | DECODE_CLEAR_SEGOVR(); | |
8466 | END_OF_INSTR(); | |
8467 | } | |
8468 | ||
8469 | /**************************************************************************** | |
8470 | REMARKS: | |
8471 | Handles opcode 0xc3 | |
8472 | ****************************************************************************/ | |
8473 | static void x86emuOp_ret_near(u8 X86EMU_UNUSED(op1)) | |
8474 | { | |
8475 | START_OF_INSTR(); | |
8476 | DECODE_PRINTF("RET\n"); | |
8477 | RETURN_TRACE("RET",M.x86.saved_cs,M.x86.saved_ip); | |
8478 | TRACE_AND_STEP(); | |
8479 | M.x86.R_IP = pop_word(); | |
8480 | DECODE_CLEAR_SEGOVR(); | |
8481 | END_OF_INSTR(); | |
8482 | } | |
8483 | ||
8484 | /**************************************************************************** | |
8485 | REMARKS: | |
8486 | Handles opcode 0xc4 | |
8487 | ****************************************************************************/ | |
8488 | static void x86emuOp_les_R_IMM(u8 X86EMU_UNUSED(op1)) | |
8489 | { | |
8490 | int mod, rh, rl; | |
8491 | u16 *dstreg; | |
8492 | uint srcoffset; | |
8493 | ||
8494 | START_OF_INSTR(); | |
8495 | DECODE_PRINTF("LES\t"); | |
8496 | FETCH_DECODE_MODRM(mod, rh, rl); | |
8497 | switch (mod) { | |
8498 | case 0: | |
8499 | dstreg = DECODE_RM_WORD_REGISTER(rh); | |
8500 | DECODE_PRINTF(","); | |
8501 | srcoffset = decode_rm00_address(rl); | |
8502 | DECODE_PRINTF("\n"); | |
8503 | TRACE_AND_STEP(); | |
8504 | *dstreg = fetch_data_word(srcoffset); | |
8505 | M.x86.R_ES = fetch_data_word(srcoffset + 2); | |
8506 | break; | |
8507 | case 1: | |
8508 | dstreg = DECODE_RM_WORD_REGISTER(rh); | |
8509 | DECODE_PRINTF(","); | |
8510 | srcoffset = decode_rm01_address(rl); | |
8511 | DECODE_PRINTF("\n"); | |
8512 | TRACE_AND_STEP(); | |
8513 | *dstreg = fetch_data_word(srcoffset); | |
8514 | M.x86.R_ES = fetch_data_word(srcoffset + 2); | |
8515 | break; | |
8516 | case 2: | |
8517 | dstreg = DECODE_RM_WORD_REGISTER(rh); | |
8518 | DECODE_PRINTF(","); | |
8519 | srcoffset = decode_rm10_address(rl); | |
8520 | DECODE_PRINTF("\n"); | |
8521 | TRACE_AND_STEP(); | |
8522 | *dstreg = fetch_data_word(srcoffset); | |
8523 | M.x86.R_ES = fetch_data_word(srcoffset + 2); | |
8524 | break; | |
8525 | case 3: /* register to register */ | |
8526 | /* UNDEFINED! */ | |
8527 | TRACE_AND_STEP(); | |
8528 | } | |
8529 | DECODE_CLEAR_SEGOVR(); | |
8530 | END_OF_INSTR(); | |
8531 | } | |
8532 | ||
8533 | /**************************************************************************** | |
8534 | REMARKS: | |
8535 | Handles opcode 0xc5 | |
8536 | ****************************************************************************/ | |
8537 | static void x86emuOp_lds_R_IMM(u8 X86EMU_UNUSED(op1)) | |
8538 | { | |
8539 | int mod, rh, rl; | |
8540 | u16 *dstreg; | |
8541 | uint srcoffset; | |
8542 | ||
8543 | START_OF_INSTR(); | |
8544 | DECODE_PRINTF("LDS\t"); | |
8545 | FETCH_DECODE_MODRM(mod, rh, rl); | |
8546 | switch (mod) { | |
8547 | case 0: | |
8548 | dstreg = DECODE_RM_WORD_REGISTER(rh); | |
8549 | DECODE_PRINTF(","); | |
8550 | srcoffset = decode_rm00_address(rl); | |
8551 | DECODE_PRINTF("\n"); | |
8552 | TRACE_AND_STEP(); | |
8553 | *dstreg = fetch_data_word(srcoffset); | |
8554 | M.x86.R_DS = fetch_data_word(srcoffset + 2); | |
8555 | break; | |
8556 | case 1: | |
8557 | dstreg = DECODE_RM_WORD_REGISTER(rh); | |
8558 | DECODE_PRINTF(","); | |
8559 | srcoffset = decode_rm01_address(rl); | |
8560 | DECODE_PRINTF("\n"); | |
8561 | TRACE_AND_STEP(); | |
8562 | *dstreg = fetch_data_word(srcoffset); | |
8563 | M.x86.R_DS = fetch_data_word(srcoffset + 2); | |
8564 | break; | |
8565 | case 2: | |
8566 | dstreg = DECODE_RM_WORD_REGISTER(rh); | |
8567 | DECODE_PRINTF(","); | |
8568 | srcoffset = decode_rm10_address(rl); | |
8569 | DECODE_PRINTF("\n"); | |
8570 | TRACE_AND_STEP(); | |
8571 | *dstreg = fetch_data_word(srcoffset); | |
8572 | M.x86.R_DS = fetch_data_word(srcoffset + 2); | |
8573 | break; | |
8574 | case 3: /* register to register */ | |
8575 | /* UNDEFINED! */ | |
8576 | TRACE_AND_STEP(); | |
8577 | } | |
8578 | DECODE_CLEAR_SEGOVR(); | |
8579 | END_OF_INSTR(); | |
8580 | } | |
8581 | ||
8582 | /**************************************************************************** | |
8583 | REMARKS: | |
8584 | Handles opcode 0xc6 | |
8585 | ****************************************************************************/ | |
8586 | static void x86emuOp_mov_byte_RM_IMM(u8 X86EMU_UNUSED(op1)) | |
8587 | { | |
8588 | int mod, rl, rh; | |
8589 | u8 *destreg; | |
8590 | uint destoffset; | |
8591 | u8 imm; | |
8592 | ||
8593 | START_OF_INSTR(); | |
8594 | DECODE_PRINTF("MOV\t"); | |
8595 | FETCH_DECODE_MODRM(mod, rh, rl); | |
8596 | if (rh != 0) { | |
8597 | DECODE_PRINTF("ILLEGAL DECODE OF OPCODE c6\n"); | |
8598 | HALT_SYS(); | |
8599 | } | |
8600 | switch (mod) { | |
8601 | case 0: | |
8602 | DECODE_PRINTF("BYTE PTR "); | |
8603 | destoffset = decode_rm00_address(rl); | |
8604 | imm = fetch_byte_imm(); | |
8605 | DECODE_PRINTF2(",%2x\n", imm); | |
8606 | TRACE_AND_STEP(); | |
8607 | store_data_byte(destoffset, imm); | |
8608 | break; | |
8609 | case 1: | |
8610 | DECODE_PRINTF("BYTE PTR "); | |
8611 | destoffset = decode_rm01_address(rl); | |
8612 | imm = fetch_byte_imm(); | |
8613 | DECODE_PRINTF2(",%2x\n", imm); | |
8614 | TRACE_AND_STEP(); | |
8615 | store_data_byte(destoffset, imm); | |
8616 | break; | |
8617 | case 2: | |
8618 | DECODE_PRINTF("BYTE PTR "); | |
8619 | destoffset = decode_rm10_address(rl); | |
8620 | imm = fetch_byte_imm(); | |
8621 | DECODE_PRINTF2(",%2x\n", imm); | |
8622 | TRACE_AND_STEP(); | |
8623 | store_data_byte(destoffset, imm); | |
8624 | break; | |
8625 | case 3: /* register to register */ | |
8626 | destreg = DECODE_RM_BYTE_REGISTER(rl); | |
8627 | imm = fetch_byte_imm(); | |
8628 | DECODE_PRINTF2(",%2x\n", imm); | |
8629 | TRACE_AND_STEP(); | |
8630 | *destreg = imm; | |
8631 | break; | |
8632 | } | |
8633 | DECODE_CLEAR_SEGOVR(); | |
8634 | END_OF_INSTR(); | |
8635 | } | |
8636 | ||
8637 | /**************************************************************************** | |
8638 | REMARKS: | |
8639 | Handles opcode 0xc7 | |
8640 | ****************************************************************************/ | |
8641 | static void x86emuOp_mov_word_RM_IMM(u8 X86EMU_UNUSED(op1)) | |
8642 | { | |
8643 | int mod, rl, rh; | |
8644 | uint destoffset; | |
8645 | ||
8646 | START_OF_INSTR(); | |
8647 | DECODE_PRINTF("MOV\t"); | |
8648 | FETCH_DECODE_MODRM(mod, rh, rl); | |
8649 | if (rh != 0) { | |
8650 | DECODE_PRINTF("ILLEGAL DECODE OF OPCODE 8F\n"); | |
8651 | HALT_SYS(); | |
8652 | } | |
8653 | switch (mod) { | |
8654 | case 0: | |
8655 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
8656 | u32 imm; | |
8657 | ||
8658 | DECODE_PRINTF("DWORD PTR "); | |
8659 | destoffset = decode_rm00_address(rl); | |
8660 | imm = fetch_long_imm(); | |
8661 | DECODE_PRINTF2(",%x\n", imm); | |
8662 | TRACE_AND_STEP(); | |
8663 | store_data_long(destoffset, imm); | |
8664 | } else { | |
8665 | u16 imm; | |
8666 | ||
8667 | DECODE_PRINTF("WORD PTR "); | |
8668 | destoffset = decode_rm00_address(rl); | |
8669 | imm = fetch_word_imm(); | |
8670 | DECODE_PRINTF2(",%x\n", imm); | |
8671 | TRACE_AND_STEP(); | |
8672 | store_data_word(destoffset, imm); | |
8673 | } | |
8674 | break; | |
8675 | case 1: | |
8676 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
8677 | u32 imm; | |
8678 | ||
8679 | DECODE_PRINTF("DWORD PTR "); | |
8680 | destoffset = decode_rm01_address(rl); | |
8681 | imm = fetch_long_imm(); | |
8682 | DECODE_PRINTF2(",%x\n", imm); | |
8683 | TRACE_AND_STEP(); | |
8684 | store_data_long(destoffset, imm); | |
8685 | } else { | |
8686 | u16 imm; | |
8687 | ||
8688 | DECODE_PRINTF("WORD PTR "); | |
8689 | destoffset = decode_rm01_address(rl); | |
8690 | imm = fetch_word_imm(); | |
8691 | DECODE_PRINTF2(",%x\n", imm); | |
8692 | TRACE_AND_STEP(); | |
8693 | store_data_word(destoffset, imm); | |
8694 | } | |
8695 | break; | |
8696 | case 2: | |
8697 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
8698 | u32 imm; | |
8699 | ||
8700 | DECODE_PRINTF("DWORD PTR "); | |
8701 | destoffset = decode_rm10_address(rl); | |
8702 | imm = fetch_long_imm(); | |
8703 | DECODE_PRINTF2(",%x\n", imm); | |
8704 | TRACE_AND_STEP(); | |
8705 | store_data_long(destoffset, imm); | |
8706 | } else { | |
8707 | u16 imm; | |
8708 | ||
8709 | DECODE_PRINTF("WORD PTR "); | |
8710 | destoffset = decode_rm10_address(rl); | |
8711 | imm = fetch_word_imm(); | |
8712 | DECODE_PRINTF2(",%x\n", imm); | |
8713 | TRACE_AND_STEP(); | |
8714 | store_data_word(destoffset, imm); | |
8715 | } | |
8716 | break; | |
8717 | case 3: /* register to register */ | |
8718 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
8719 | u32 *destreg; | |
8720 | u32 imm; | |
8721 | ||
8722 | destreg = DECODE_RM_LONG_REGISTER(rl); | |
8723 | imm = fetch_long_imm(); | |
8724 | DECODE_PRINTF2(",%x\n", imm); | |
8725 | TRACE_AND_STEP(); | |
8726 | *destreg = imm; | |
8727 | } else { | |
8728 | u16 *destreg; | |
8729 | u16 imm; | |
8730 | ||
8731 | destreg = DECODE_RM_WORD_REGISTER(rl); | |
8732 | imm = fetch_word_imm(); | |
8733 | DECODE_PRINTF2(",%x\n", imm); | |
8734 | TRACE_AND_STEP(); | |
8735 | *destreg = imm; | |
8736 | } | |
8737 | break; | |
8738 | } | |
8739 | DECODE_CLEAR_SEGOVR(); | |
8740 | END_OF_INSTR(); | |
8741 | } | |
8742 | ||
8743 | /**************************************************************************** | |
8744 | REMARKS: | |
8745 | Handles opcode 0xc8 | |
8746 | ****************************************************************************/ | |
8747 | static void x86emuOp_enter(u8 X86EMU_UNUSED(op1)) | |
8748 | { | |
8749 | u16 local,frame_pointer; | |
8750 | u8 nesting; | |
8751 | int i; | |
8752 | ||
8753 | START_OF_INSTR(); | |
8754 | local = fetch_word_imm(); | |
8755 | nesting = fetch_byte_imm(); | |
8756 | DECODE_PRINTF2("ENTER %x\n", local); | |
8757 | DECODE_PRINTF2(",%x\n", nesting); | |
8758 | TRACE_AND_STEP(); | |
8759 | push_word(M.x86.R_BP); | |
8760 | frame_pointer = M.x86.R_SP; | |
8761 | if (nesting > 0) { | |
8762 | for (i = 1; i < nesting; i++) { | |
8763 | M.x86.R_BP -= 2; | |
8764 | push_word(fetch_data_word_abs(M.x86.R_SS, M.x86.R_BP)); | |
8765 | } | |
8766 | push_word(frame_pointer); | |
8767 | } | |
8768 | M.x86.R_BP = frame_pointer; | |
8769 | M.x86.R_SP = (u16)(M.x86.R_SP - local); | |
8770 | DECODE_CLEAR_SEGOVR(); | |
8771 | END_OF_INSTR(); | |
8772 | } | |
8773 | ||
8774 | /**************************************************************************** | |
8775 | REMARKS: | |
8776 | Handles opcode 0xc9 | |
8777 | ****************************************************************************/ | |
8778 | static void x86emuOp_leave(u8 X86EMU_UNUSED(op1)) | |
8779 | { | |
8780 | START_OF_INSTR(); | |
8781 | DECODE_PRINTF("LEAVE\n"); | |
8782 | TRACE_AND_STEP(); | |
8783 | M.x86.R_SP = M.x86.R_BP; | |
8784 | M.x86.R_BP = pop_word(); | |
8785 | DECODE_CLEAR_SEGOVR(); | |
8786 | END_OF_INSTR(); | |
8787 | } | |
8788 | ||
8789 | /**************************************************************************** | |
8790 | REMARKS: | |
8791 | Handles opcode 0xca | |
8792 | ****************************************************************************/ | |
8793 | static void x86emuOp_ret_far_IMM(u8 X86EMU_UNUSED(op1)) | |
8794 | { | |
8795 | u16 imm; | |
8796 | ||
8797 | START_OF_INSTR(); | |
8798 | DECODE_PRINTF("RETF\t"); | |
8799 | imm = fetch_word_imm(); | |
8800 | DECODE_PRINTF2("%x\n", imm); | |
8801 | RETURN_TRACE("RETF",M.x86.saved_cs,M.x86.saved_ip); | |
8802 | TRACE_AND_STEP(); | |
8803 | M.x86.R_IP = pop_word(); | |
8804 | M.x86.R_CS = pop_word(); | |
8805 | M.x86.R_SP += imm; | |
8806 | DECODE_CLEAR_SEGOVR(); | |
8807 | END_OF_INSTR(); | |
8808 | } | |
8809 | ||
8810 | /**************************************************************************** | |
8811 | REMARKS: | |
8812 | Handles opcode 0xcb | |
8813 | ****************************************************************************/ | |
8814 | static void x86emuOp_ret_far(u8 X86EMU_UNUSED(op1)) | |
8815 | { | |
8816 | START_OF_INSTR(); | |
8817 | DECODE_PRINTF("RETF\n"); | |
8818 | RETURN_TRACE("RETF",M.x86.saved_cs,M.x86.saved_ip); | |
8819 | TRACE_AND_STEP(); | |
8820 | M.x86.R_IP = pop_word(); | |
8821 | M.x86.R_CS = pop_word(); | |
8822 | DECODE_CLEAR_SEGOVR(); | |
8823 | END_OF_INSTR(); | |
8824 | } | |
8825 | ||
8826 | /**************************************************************************** | |
8827 | REMARKS: | |
8828 | Handles opcode 0xcc | |
8829 | ****************************************************************************/ | |
8830 | static void x86emuOp_int3(u8 X86EMU_UNUSED(op1)) | |
8831 | { | |
8832 | START_OF_INSTR(); | |
8833 | DECODE_PRINTF("INT 3\n"); | |
8834 | TRACE_AND_STEP(); | |
8835 | if (_X86EMU_intrTab[3]) { | |
8836 | (*_X86EMU_intrTab[3])(3); | |
8837 | } else { | |
8838 | push_word((u16)M.x86.R_FLG); | |
8839 | CLEAR_FLAG(F_IF); | |
8840 | CLEAR_FLAG(F_TF); | |
8841 | push_word(M.x86.R_CS); | |
8842 | M.x86.R_CS = mem_access_word(3 * 4 + 2); | |
8843 | push_word(M.x86.R_IP); | |
8844 | M.x86.R_IP = mem_access_word(3 * 4); | |
8845 | } | |
8846 | DECODE_CLEAR_SEGOVR(); | |
8847 | END_OF_INSTR(); | |
8848 | } | |
8849 | ||
8850 | /**************************************************************************** | |
8851 | REMARKS: | |
8852 | Handles opcode 0xcd | |
8853 | ****************************************************************************/ | |
8854 | static void x86emuOp_int_IMM(u8 X86EMU_UNUSED(op1)) | |
8855 | { | |
8856 | u8 intnum; | |
8857 | ||
8858 | START_OF_INSTR(); | |
8859 | DECODE_PRINTF("INT\t"); | |
8860 | intnum = fetch_byte_imm(); | |
8861 | DECODE_PRINTF2("%x\n", intnum); | |
8862 | TRACE_AND_STEP(); | |
8863 | if (_X86EMU_intrTab[intnum]) { | |
8864 | (*_X86EMU_intrTab[intnum])(intnum); | |
8865 | } else { | |
8866 | push_word((u16)M.x86.R_FLG); | |
8867 | CLEAR_FLAG(F_IF); | |
8868 | CLEAR_FLAG(F_TF); | |
8869 | push_word(M.x86.R_CS); | |
8870 | M.x86.R_CS = mem_access_word(intnum * 4 + 2); | |
8871 | push_word(M.x86.R_IP); | |
8872 | M.x86.R_IP = mem_access_word(intnum * 4); | |
8873 | } | |
8874 | DECODE_CLEAR_SEGOVR(); | |
8875 | END_OF_INSTR(); | |
8876 | } | |
8877 | ||
8878 | /**************************************************************************** | |
8879 | REMARKS: | |
8880 | Handles opcode 0xce | |
8881 | ****************************************************************************/ | |
8882 | static void x86emuOp_into(u8 X86EMU_UNUSED(op1)) | |
8883 | { | |
8884 | START_OF_INSTR(); | |
8885 | DECODE_PRINTF("INTO\n"); | |
8886 | TRACE_AND_STEP(); | |
8887 | if (ACCESS_FLAG(F_OF)) { | |
8888 | if (_X86EMU_intrTab[4]) { | |
8889 | (*_X86EMU_intrTab[4])(4); | |
8890 | } else { | |
8891 | push_word((u16)M.x86.R_FLG); | |
8892 | CLEAR_FLAG(F_IF); | |
8893 | CLEAR_FLAG(F_TF); | |
8894 | push_word(M.x86.R_CS); | |
8895 | M.x86.R_CS = mem_access_word(4 * 4 + 2); | |
8896 | push_word(M.x86.R_IP); | |
8897 | M.x86.R_IP = mem_access_word(4 * 4); | |
8898 | } | |
8899 | } | |
8900 | DECODE_CLEAR_SEGOVR(); | |
8901 | END_OF_INSTR(); | |
8902 | } | |
8903 | ||
8904 | /**************************************************************************** | |
8905 | REMARKS: | |
8906 | Handles opcode 0xcf | |
8907 | ****************************************************************************/ | |
8908 | static void x86emuOp_iret(u8 X86EMU_UNUSED(op1)) | |
8909 | { | |
8910 | START_OF_INSTR(); | |
8911 | DECODE_PRINTF("IRET\n"); | |
8912 | ||
8913 | TRACE_AND_STEP(); | |
8914 | ||
8915 | M.x86.R_IP = pop_word(); | |
8916 | M.x86.R_CS = pop_word(); | |
8917 | M.x86.R_FLG = pop_word(); | |
8918 | DECODE_CLEAR_SEGOVR(); | |
8919 | END_OF_INSTR(); | |
8920 | } | |
8921 | ||
8922 | /**************************************************************************** | |
8923 | REMARKS: | |
8924 | Handles opcode 0xd0 | |
8925 | ****************************************************************************/ | |
8926 | static void x86emuOp_opcD0_byte_RM_1(u8 X86EMU_UNUSED(op1)) | |
8927 | { | |
8928 | int mod, rl, rh; | |
8929 | u8 *destreg; | |
8930 | uint destoffset; | |
8931 | u8 destval; | |
8932 | ||
8933 | /* | |
8934 | * Yet another weirdo special case instruction format. Part of | |
8935 | * the opcode held below in "RH". Doubly nested case would | |
8936 | * result, except that the decoded instruction | |
8937 | */ | |
8938 | START_OF_INSTR(); | |
8939 | FETCH_DECODE_MODRM(mod, rh, rl); | |
8940 | #ifdef DEBUG | |
8941 | if (DEBUG_DECODE()) { | |
8942 | /* XXX DECODE_PRINTF may be changed to something more | |
8943 | general, so that it is important to leave the strings | |
8944 | in the same format, even though the result is that the | |
8945 | above test is done twice. */ | |
8946 | switch (rh) { | |
8947 | case 0: | |
8948 | DECODE_PRINTF("ROL\t"); | |
8949 | break; | |
8950 | case 1: | |
8951 | DECODE_PRINTF("ROR\t"); | |
8952 | break; | |
8953 | case 2: | |
8954 | DECODE_PRINTF("RCL\t"); | |
8955 | break; | |
8956 | case 3: | |
8957 | DECODE_PRINTF("RCR\t"); | |
8958 | break; | |
8959 | case 4: | |
8960 | DECODE_PRINTF("SHL\t"); | |
8961 | break; | |
8962 | case 5: | |
8963 | DECODE_PRINTF("SHR\t"); | |
8964 | break; | |
8965 | case 6: | |
8966 | DECODE_PRINTF("SAL\t"); | |
8967 | break; | |
8968 | case 7: | |
8969 | DECODE_PRINTF("SAR\t"); | |
8970 | break; | |
8971 | } | |
8972 | } | |
8973 | #endif | |
8974 | /* know operation, decode the mod byte to find the addressing | |
8975 | mode. */ | |
8976 | switch (mod) { | |
8977 | case 0: | |
8978 | DECODE_PRINTF("BYTE PTR "); | |
8979 | destoffset = decode_rm00_address(rl); | |
8980 | DECODE_PRINTF(",1\n"); | |
8981 | destval = fetch_data_byte(destoffset); | |
8982 | TRACE_AND_STEP(); | |
8983 | destval = (*opcD0_byte_operation[rh]) (destval, 1); | |
8984 | store_data_byte(destoffset, destval); | |
8985 | break; | |
8986 | case 1: | |
8987 | DECODE_PRINTF("BYTE PTR "); | |
8988 | destoffset = decode_rm01_address(rl); | |
8989 | DECODE_PRINTF(",1\n"); | |
8990 | destval = fetch_data_byte(destoffset); | |
8991 | TRACE_AND_STEP(); | |
8992 | destval = (*opcD0_byte_operation[rh]) (destval, 1); | |
8993 | store_data_byte(destoffset, destval); | |
8994 | break; | |
8995 | case 2: | |
8996 | DECODE_PRINTF("BYTE PTR "); | |
8997 | destoffset = decode_rm10_address(rl); | |
8998 | DECODE_PRINTF(",1\n"); | |
8999 | destval = fetch_data_byte(destoffset); | |
9000 | TRACE_AND_STEP(); | |
9001 | destval = (*opcD0_byte_operation[rh]) (destval, 1); | |
9002 | store_data_byte(destoffset, destval); | |
9003 | break; | |
9004 | case 3: /* register to register */ | |
9005 | destreg = DECODE_RM_BYTE_REGISTER(rl); | |
9006 | DECODE_PRINTF(",1\n"); | |
9007 | TRACE_AND_STEP(); | |
9008 | destval = (*opcD0_byte_operation[rh]) (*destreg, 1); | |
9009 | *destreg = destval; | |
9010 | break; | |
9011 | } | |
9012 | DECODE_CLEAR_SEGOVR(); | |
9013 | END_OF_INSTR(); | |
9014 | } | |
9015 | ||
9016 | /**************************************************************************** | |
9017 | REMARKS: | |
9018 | Handles opcode 0xd1 | |
9019 | ****************************************************************************/ | |
9020 | static void x86emuOp_opcD1_word_RM_1(u8 X86EMU_UNUSED(op1)) | |
9021 | { | |
9022 | int mod, rl, rh; | |
9023 | uint destoffset; | |
9024 | ||
9025 | /* | |
9026 | * Yet another weirdo special case instruction format. Part of | |
9027 | * the opcode held below in "RH". Doubly nested case would | |
9028 | * result, except that the decoded instruction | |
9029 | */ | |
9030 | START_OF_INSTR(); | |
9031 | FETCH_DECODE_MODRM(mod, rh, rl); | |
9032 | #ifdef DEBUG | |
9033 | if (DEBUG_DECODE()) { | |
9034 | /* XXX DECODE_PRINTF may be changed to something more | |
9035 | general, so that it is important to leave the strings | |
9036 | in the same format, even though the result is that the | |
9037 | above test is done twice. */ | |
9038 | switch (rh) { | |
9039 | case 0: | |
9040 | DECODE_PRINTF("ROL\t"); | |
9041 | break; | |
9042 | case 1: | |
9043 | DECODE_PRINTF("ROR\t"); | |
9044 | break; | |
9045 | case 2: | |
9046 | DECODE_PRINTF("RCL\t"); | |
9047 | break; | |
9048 | case 3: | |
9049 | DECODE_PRINTF("RCR\t"); | |
9050 | break; | |
9051 | case 4: | |
9052 | DECODE_PRINTF("SHL\t"); | |
9053 | break; | |
9054 | case 5: | |
9055 | DECODE_PRINTF("SHR\t"); | |
9056 | break; | |
9057 | case 6: | |
9058 | DECODE_PRINTF("SAL\t"); | |
9059 | break; | |
9060 | case 7: | |
9061 | DECODE_PRINTF("SAR\t"); | |
9062 | break; | |
9063 | } | |
9064 | } | |
9065 | #endif | |
9066 | /* know operation, decode the mod byte to find the addressing | |
9067 | mode. */ | |
9068 | switch (mod) { | |
9069 | case 0: | |
9070 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
9071 | u32 destval; | |
9072 | ||
9073 | DECODE_PRINTF("DWORD PTR "); | |
9074 | destoffset = decode_rm00_address(rl); | |
9075 | DECODE_PRINTF(",1\n"); | |
9076 | destval = fetch_data_long(destoffset); | |
9077 | TRACE_AND_STEP(); | |
9078 | destval = (*opcD1_long_operation[rh]) (destval, 1); | |
9079 | store_data_long(destoffset, destval); | |
9080 | } else { | |
9081 | u16 destval; | |
9082 | ||
9083 | DECODE_PRINTF("WORD PTR "); | |
9084 | destoffset = decode_rm00_address(rl); | |
9085 | DECODE_PRINTF(",1\n"); | |
9086 | destval = fetch_data_word(destoffset); | |
9087 | TRACE_AND_STEP(); | |
9088 | destval = (*opcD1_word_operation[rh]) (destval, 1); | |
9089 | store_data_word(destoffset, destval); | |
9090 | } | |
9091 | break; | |
9092 | case 1: | |
9093 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
9094 | u32 destval; | |
9095 | ||
9096 | DECODE_PRINTF("DWORD PTR "); | |
9097 | destoffset = decode_rm01_address(rl); | |
9098 | DECODE_PRINTF(",1\n"); | |
9099 | destval = fetch_data_long(destoffset); | |
9100 | TRACE_AND_STEP(); | |
9101 | destval = (*opcD1_long_operation[rh]) (destval, 1); | |
9102 | store_data_long(destoffset, destval); | |
9103 | } else { | |
9104 | u16 destval; | |
9105 | ||
9106 | DECODE_PRINTF("WORD PTR "); | |
9107 | destoffset = decode_rm01_address(rl); | |
9108 | DECODE_PRINTF(",1\n"); | |
9109 | destval = fetch_data_word(destoffset); | |
9110 | TRACE_AND_STEP(); | |
9111 | destval = (*opcD1_word_operation[rh]) (destval, 1); | |
9112 | store_data_word(destoffset, destval); | |
9113 | } | |
9114 | break; | |
9115 | case 2: | |
9116 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
9117 | u32 destval; | |
9118 | ||
9119 | DECODE_PRINTF("DWORD PTR "); | |
9120 | destoffset = decode_rm10_address(rl); | |
9121 | DECODE_PRINTF(",1\n"); | |
9122 | destval = fetch_data_long(destoffset); | |
9123 | TRACE_AND_STEP(); | |
9124 | destval = (*opcD1_long_operation[rh]) (destval, 1); | |
9125 | store_data_long(destoffset, destval); | |
9126 | } else { | |
9127 | u16 destval; | |
9128 | ||
9129 | DECODE_PRINTF("BYTE PTR "); | |
9130 | destoffset = decode_rm10_address(rl); | |
9131 | DECODE_PRINTF(",1\n"); | |
9132 | destval = fetch_data_word(destoffset); | |
9133 | TRACE_AND_STEP(); | |
9134 | destval = (*opcD1_word_operation[rh]) (destval, 1); | |
9135 | store_data_word(destoffset, destval); | |
9136 | } | |
9137 | break; | |
9138 | case 3: /* register to register */ | |
9139 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
9140 | u32 destval; | |
9141 | u32 *destreg; | |
9142 | ||
9143 | destreg = DECODE_RM_LONG_REGISTER(rl); | |
9144 | DECODE_PRINTF(",1\n"); | |
9145 | TRACE_AND_STEP(); | |
9146 | destval = (*opcD1_long_operation[rh]) (*destreg, 1); | |
9147 | *destreg = destval; | |
9148 | } else { | |
9149 | u16 destval; | |
9150 | u16 *destreg; | |
9151 | ||
9152 | destreg = DECODE_RM_WORD_REGISTER(rl); | |
9153 | DECODE_PRINTF(",1\n"); | |
9154 | TRACE_AND_STEP(); | |
9155 | destval = (*opcD1_word_operation[rh]) (*destreg, 1); | |
9156 | *destreg = destval; | |
9157 | } | |
9158 | break; | |
9159 | } | |
9160 | DECODE_CLEAR_SEGOVR(); | |
9161 | END_OF_INSTR(); | |
9162 | } | |
9163 | ||
9164 | /**************************************************************************** | |
9165 | REMARKS: | |
9166 | Handles opcode 0xd2 | |
9167 | ****************************************************************************/ | |
9168 | static void x86emuOp_opcD2_byte_RM_CL(u8 X86EMU_UNUSED(op1)) | |
9169 | { | |
9170 | int mod, rl, rh; | |
9171 | u8 *destreg; | |
9172 | uint destoffset; | |
9173 | u8 destval; | |
9174 | u8 amt; | |
9175 | ||
9176 | /* | |
9177 | * Yet another weirdo special case instruction format. Part of | |
9178 | * the opcode held below in "RH". Doubly nested case would | |
9179 | * result, except that the decoded instruction | |
9180 | */ | |
9181 | START_OF_INSTR(); | |
9182 | FETCH_DECODE_MODRM(mod, rh, rl); | |
9183 | #ifdef DEBUG | |
9184 | if (DEBUG_DECODE()) { | |
9185 | /* XXX DECODE_PRINTF may be changed to something more | |
9186 | general, so that it is important to leave the strings | |
9187 | in the same format, even though the result is that the | |
9188 | above test is done twice. */ | |
9189 | switch (rh) { | |
9190 | case 0: | |
9191 | DECODE_PRINTF("ROL\t"); | |
9192 | break; | |
9193 | case 1: | |
9194 | DECODE_PRINTF("ROR\t"); | |
9195 | break; | |
9196 | case 2: | |
9197 | DECODE_PRINTF("RCL\t"); | |
9198 | break; | |
9199 | case 3: | |
9200 | DECODE_PRINTF("RCR\t"); | |
9201 | break; | |
9202 | case 4: | |
9203 | DECODE_PRINTF("SHL\t"); | |
9204 | break; | |
9205 | case 5: | |
9206 | DECODE_PRINTF("SHR\t"); | |
9207 | break; | |
9208 | case 6: | |
9209 | DECODE_PRINTF("SAL\t"); | |
9210 | break; | |
9211 | case 7: | |
9212 | DECODE_PRINTF("SAR\t"); | |
9213 | break; | |
9214 | } | |
9215 | } | |
9216 | #endif | |
9217 | /* know operation, decode the mod byte to find the addressing | |
9218 | mode. */ | |
9219 | amt = M.x86.R_CL; | |
9220 | switch (mod) { | |
9221 | case 0: | |
9222 | DECODE_PRINTF("BYTE PTR "); | |
9223 | destoffset = decode_rm00_address(rl); | |
9224 | DECODE_PRINTF(",CL\n"); | |
9225 | destval = fetch_data_byte(destoffset); | |
9226 | TRACE_AND_STEP(); | |
9227 | destval = (*opcD0_byte_operation[rh]) (destval, amt); | |
9228 | store_data_byte(destoffset, destval); | |
9229 | break; | |
9230 | case 1: | |
9231 | DECODE_PRINTF("BYTE PTR "); | |
9232 | destoffset = decode_rm01_address(rl); | |
9233 | DECODE_PRINTF(",CL\n"); | |
9234 | destval = fetch_data_byte(destoffset); | |
9235 | TRACE_AND_STEP(); | |
9236 | destval = (*opcD0_byte_operation[rh]) (destval, amt); | |
9237 | store_data_byte(destoffset, destval); | |
9238 | break; | |
9239 | case 2: | |
9240 | DECODE_PRINTF("BYTE PTR "); | |
9241 | destoffset = decode_rm10_address(rl); | |
9242 | DECODE_PRINTF(",CL\n"); | |
9243 | destval = fetch_data_byte(destoffset); | |
9244 | TRACE_AND_STEP(); | |
9245 | destval = (*opcD0_byte_operation[rh]) (destval, amt); | |
9246 | store_data_byte(destoffset, destval); | |
9247 | break; | |
9248 | case 3: /* register to register */ | |
9249 | destreg = DECODE_RM_BYTE_REGISTER(rl); | |
9250 | DECODE_PRINTF(",CL\n"); | |
9251 | TRACE_AND_STEP(); | |
9252 | destval = (*opcD0_byte_operation[rh]) (*destreg, amt); | |
9253 | *destreg = destval; | |
9254 | break; | |
9255 | } | |
9256 | DECODE_CLEAR_SEGOVR(); | |
9257 | END_OF_INSTR(); | |
9258 | } | |
9259 | ||
9260 | /**************************************************************************** | |
9261 | REMARKS: | |
9262 | Handles opcode 0xd3 | |
9263 | ****************************************************************************/ | |
9264 | static void x86emuOp_opcD3_word_RM_CL(u8 X86EMU_UNUSED(op1)) | |
9265 | { | |
9266 | int mod, rl, rh; | |
9267 | uint destoffset; | |
9268 | u8 amt; | |
9269 | ||
9270 | /* | |
9271 | * Yet another weirdo special case instruction format. Part of | |
9272 | * the opcode held below in "RH". Doubly nested case would | |
9273 | * result, except that the decoded instruction | |
9274 | */ | |
9275 | START_OF_INSTR(); | |
9276 | FETCH_DECODE_MODRM(mod, rh, rl); | |
9277 | #ifdef DEBUG | |
9278 | if (DEBUG_DECODE()) { | |
9279 | /* XXX DECODE_PRINTF may be changed to something more | |
9280 | general, so that it is important to leave the strings | |
9281 | in the same format, even though the result is that the | |
9282 | above test is done twice. */ | |
9283 | switch (rh) { | |
9284 | case 0: | |
9285 | DECODE_PRINTF("ROL\t"); | |
9286 | break; | |
9287 | case 1: | |
9288 | DECODE_PRINTF("ROR\t"); | |
9289 | break; | |
9290 | case 2: | |
9291 | DECODE_PRINTF("RCL\t"); | |
9292 | break; | |
9293 | case 3: | |
9294 | DECODE_PRINTF("RCR\t"); | |
9295 | break; | |
9296 | case 4: | |
9297 | DECODE_PRINTF("SHL\t"); | |
9298 | break; | |
9299 | case 5: | |
9300 | DECODE_PRINTF("SHR\t"); | |
9301 | break; | |
9302 | case 6: | |
9303 | DECODE_PRINTF("SAL\t"); | |
9304 | break; | |
9305 | case 7: | |
9306 | DECODE_PRINTF("SAR\t"); | |
9307 | break; | |
9308 | } | |
9309 | } | |
9310 | #endif | |
9311 | /* know operation, decode the mod byte to find the addressing | |
9312 | mode. */ | |
9313 | amt = M.x86.R_CL; | |
9314 | switch (mod) { | |
9315 | case 0: | |
9316 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
9317 | u32 destval; | |
9318 | ||
9319 | DECODE_PRINTF("DWORD PTR "); | |
9320 | destoffset = decode_rm00_address(rl); | |
9321 | DECODE_PRINTF(",CL\n"); | |
9322 | destval = fetch_data_long(destoffset); | |
9323 | TRACE_AND_STEP(); | |
9324 | destval = (*opcD1_long_operation[rh]) (destval, amt); | |
9325 | store_data_long(destoffset, destval); | |
9326 | } else { | |
9327 | u16 destval; | |
9328 | ||
9329 | DECODE_PRINTF("WORD PTR "); | |
9330 | destoffset = decode_rm00_address(rl); | |
9331 | DECODE_PRINTF(",CL\n"); | |
9332 | destval = fetch_data_word(destoffset); | |
9333 | TRACE_AND_STEP(); | |
9334 | destval = (*opcD1_word_operation[rh]) (destval, amt); | |
9335 | store_data_word(destoffset, destval); | |
9336 | } | |
9337 | break; | |
9338 | case 1: | |
9339 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
9340 | u32 destval; | |
9341 | ||
9342 | DECODE_PRINTF("DWORD PTR "); | |
9343 | destoffset = decode_rm01_address(rl); | |
9344 | DECODE_PRINTF(",CL\n"); | |
9345 | destval = fetch_data_long(destoffset); | |
9346 | TRACE_AND_STEP(); | |
9347 | destval = (*opcD1_long_operation[rh]) (destval, amt); | |
9348 | store_data_long(destoffset, destval); | |
9349 | } else { | |
9350 | u16 destval; | |
9351 | ||
9352 | DECODE_PRINTF("WORD PTR "); | |
9353 | destoffset = decode_rm01_address(rl); | |
9354 | DECODE_PRINTF(",CL\n"); | |
9355 | destval = fetch_data_word(destoffset); | |
9356 | TRACE_AND_STEP(); | |
9357 | destval = (*opcD1_word_operation[rh]) (destval, amt); | |
9358 | store_data_word(destoffset, destval); | |
9359 | } | |
9360 | break; | |
9361 | case 2: | |
9362 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
9363 | u32 destval; | |
9364 | ||
9365 | DECODE_PRINTF("DWORD PTR "); | |
9366 | destoffset = decode_rm10_address(rl); | |
9367 | DECODE_PRINTF(",CL\n"); | |
9368 | destval = fetch_data_long(destoffset); | |
9369 | TRACE_AND_STEP(); | |
9370 | destval = (*opcD1_long_operation[rh]) (destval, amt); | |
9371 | store_data_long(destoffset, destval); | |
9372 | } else { | |
9373 | u16 destval; | |
9374 | ||
9375 | DECODE_PRINTF("WORD PTR "); | |
9376 | destoffset = decode_rm10_address(rl); | |
9377 | DECODE_PRINTF(",CL\n"); | |
9378 | destval = fetch_data_word(destoffset); | |
9379 | TRACE_AND_STEP(); | |
9380 | destval = (*opcD1_word_operation[rh]) (destval, amt); | |
9381 | store_data_word(destoffset, destval); | |
9382 | } | |
9383 | break; | |
9384 | case 3: /* register to register */ | |
9385 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
9386 | u32 *destreg; | |
9387 | ||
9388 | destreg = DECODE_RM_LONG_REGISTER(rl); | |
9389 | DECODE_PRINTF(",CL\n"); | |
9390 | TRACE_AND_STEP(); | |
9391 | *destreg = (*opcD1_long_operation[rh]) (*destreg, amt); | |
9392 | } else { | |
9393 | u16 *destreg; | |
9394 | ||
9395 | destreg = DECODE_RM_WORD_REGISTER(rl); | |
9396 | DECODE_PRINTF(",CL\n"); | |
9397 | TRACE_AND_STEP(); | |
9398 | *destreg = (*opcD1_word_operation[rh]) (*destreg, amt); | |
9399 | } | |
9400 | break; | |
9401 | } | |
9402 | DECODE_CLEAR_SEGOVR(); | |
9403 | END_OF_INSTR(); | |
9404 | } | |
9405 | ||
9406 | /**************************************************************************** | |
9407 | REMARKS: | |
9408 | Handles opcode 0xd4 | |
9409 | ****************************************************************************/ | |
9410 | static void x86emuOp_aam(u8 X86EMU_UNUSED(op1)) | |
9411 | { | |
9412 | u8 a; | |
9413 | ||
9414 | START_OF_INSTR(); | |
9415 | DECODE_PRINTF("AAM\n"); | |
9416 | a = fetch_byte_imm(); /* this is a stupid encoding. */ | |
9417 | if (a != 10) { | |
9418 | /* fix: add base decoding | |
9419 | aam_word(u8 val, int base a) */ | |
9420 | DECODE_PRINTF("ERROR DECODING AAM\n"); | |
9421 | TRACE_REGS(); | |
9422 | HALT_SYS(); | |
9423 | } | |
9424 | TRACE_AND_STEP(); | |
9425 | /* note the type change here --- returning AL and AH in AX. */ | |
9426 | M.x86.R_AX = aam_word(M.x86.R_AL); | |
9427 | DECODE_CLEAR_SEGOVR(); | |
9428 | END_OF_INSTR(); | |
9429 | } | |
9430 | ||
9431 | /**************************************************************************** | |
9432 | REMARKS: | |
9433 | Handles opcode 0xd5 | |
9434 | ****************************************************************************/ | |
9435 | static void x86emuOp_aad(u8 X86EMU_UNUSED(op1)) | |
9436 | { | |
9437 | u8 a; | |
9438 | ||
9439 | START_OF_INSTR(); | |
9440 | DECODE_PRINTF("AAD\n"); | |
9441 | a = fetch_byte_imm(); | |
9442 | if (a != 10) { | |
9443 | /* fix: add base decoding | |
9444 | aad_word(u16 val, int base a) */ | |
9445 | DECODE_PRINTF("ERROR DECODING AAM\n"); | |
9446 | TRACE_REGS(); | |
9447 | HALT_SYS(); | |
9448 | } | |
9449 | TRACE_AND_STEP(); | |
9450 | M.x86.R_AX = aad_word(M.x86.R_AX); | |
9451 | DECODE_CLEAR_SEGOVR(); | |
9452 | END_OF_INSTR(); | |
9453 | } | |
9454 | ||
9455 | /* opcode 0xd6 ILLEGAL OPCODE */ | |
9456 | ||
9457 | /**************************************************************************** | |
9458 | REMARKS: | |
9459 | Handles opcode 0xd7 | |
9460 | ****************************************************************************/ | |
9461 | static void x86emuOp_xlat(u8 X86EMU_UNUSED(op1)) | |
9462 | { | |
9463 | u16 addr; | |
9464 | ||
9465 | START_OF_INSTR(); | |
9466 | DECODE_PRINTF("XLAT\n"); | |
9467 | TRACE_AND_STEP(); | |
9468 | addr = (u16)(M.x86.R_BX + (u8)M.x86.R_AL); | |
9469 | M.x86.R_AL = fetch_data_byte(addr); | |
9470 | DECODE_CLEAR_SEGOVR(); | |
9471 | END_OF_INSTR(); | |
9472 | } | |
9473 | ||
9474 | /* instuctions D8 .. DF are in i87_ops.c */ | |
9475 | ||
9476 | /**************************************************************************** | |
9477 | REMARKS: | |
9478 | Handles opcode 0xe0 | |
9479 | ****************************************************************************/ | |
9480 | static void x86emuOp_loopne(u8 X86EMU_UNUSED(op1)) | |
9481 | { | |
9482 | s16 ip; | |
9483 | ||
9484 | START_OF_INSTR(); | |
9485 | DECODE_PRINTF("LOOPNE\t"); | |
9486 | ip = (s8) fetch_byte_imm(); | |
9487 | ip += (s16) M.x86.R_IP; | |
9488 | DECODE_PRINTF2("%04x\n", ip); | |
9489 | TRACE_AND_STEP(); | |
9490 | M.x86.R_CX -= 1; | |
9491 | if (M.x86.R_CX != 0 && !ACCESS_FLAG(F_ZF)) /* CX != 0 and !ZF */ | |
9492 | M.x86.R_IP = ip; | |
9493 | DECODE_CLEAR_SEGOVR(); | |
9494 | END_OF_INSTR(); | |
9495 | } | |
9496 | ||
9497 | /**************************************************************************** | |
9498 | REMARKS: | |
9499 | Handles opcode 0xe1 | |
9500 | ****************************************************************************/ | |
9501 | static void x86emuOp_loope(u8 X86EMU_UNUSED(op1)) | |
9502 | { | |
9503 | s16 ip; | |
9504 | ||
9505 | START_OF_INSTR(); | |
9506 | DECODE_PRINTF("LOOPE\t"); | |
9507 | ip = (s8) fetch_byte_imm(); | |
9508 | ip += (s16) M.x86.R_IP; | |
9509 | DECODE_PRINTF2("%04x\n", ip); | |
9510 | TRACE_AND_STEP(); | |
9511 | M.x86.R_CX -= 1; | |
9512 | if (M.x86.R_CX != 0 && ACCESS_FLAG(F_ZF)) /* CX != 0 and ZF */ | |
9513 | M.x86.R_IP = ip; | |
9514 | DECODE_CLEAR_SEGOVR(); | |
9515 | END_OF_INSTR(); | |
9516 | } | |
9517 | ||
9518 | /**************************************************************************** | |
9519 | REMARKS: | |
9520 | Handles opcode 0xe2 | |
9521 | ****************************************************************************/ | |
9522 | static void x86emuOp_loop(u8 X86EMU_UNUSED(op1)) | |
9523 | { | |
9524 | s16 ip; | |
9525 | ||
9526 | START_OF_INSTR(); | |
9527 | DECODE_PRINTF("LOOP\t"); | |
9528 | ip = (s8) fetch_byte_imm(); | |
9529 | ip += (s16) M.x86.R_IP; | |
9530 | DECODE_PRINTF2("%04x\n", ip); | |
9531 | TRACE_AND_STEP(); | |
9532 | M.x86.R_CX -= 1; | |
9533 | if (M.x86.R_CX != 0) | |
9534 | M.x86.R_IP = ip; | |
9535 | DECODE_CLEAR_SEGOVR(); | |
9536 | END_OF_INSTR(); | |
9537 | } | |
9538 | ||
9539 | /**************************************************************************** | |
9540 | REMARKS: | |
9541 | Handles opcode 0xe3 | |
9542 | ****************************************************************************/ | |
9543 | static void x86emuOp_jcxz(u8 X86EMU_UNUSED(op1)) | |
9544 | { | |
9545 | u16 target; | |
9546 | s8 offset; | |
9547 | ||
9548 | /* jump to byte offset if overflow flag is set */ | |
9549 | START_OF_INSTR(); | |
9550 | DECODE_PRINTF("JCXZ\t"); | |
9551 | offset = (s8)fetch_byte_imm(); | |
9552 | target = (u16)(M.x86.R_IP + offset); | |
9553 | DECODE_PRINTF2("%x\n", target); | |
9554 | TRACE_AND_STEP(); | |
9555 | if (M.x86.R_CX == 0) | |
9556 | M.x86.R_IP = target; | |
9557 | DECODE_CLEAR_SEGOVR(); | |
9558 | END_OF_INSTR(); | |
9559 | } | |
9560 | ||
9561 | /**************************************************************************** | |
9562 | REMARKS: | |
9563 | Handles opcode 0xe4 | |
9564 | ****************************************************************************/ | |
9565 | static void x86emuOp_in_byte_AL_IMM(u8 X86EMU_UNUSED(op1)) | |
9566 | { | |
9567 | u8 port; | |
9568 | ||
9569 | START_OF_INSTR(); | |
9570 | DECODE_PRINTF("IN\t"); | |
9571 | port = (u8) fetch_byte_imm(); | |
9572 | DECODE_PRINTF2("%x,AL\n", port); | |
9573 | TRACE_AND_STEP(); | |
9574 | M.x86.R_AL = (*sys_inb)(port); | |
9575 | DECODE_CLEAR_SEGOVR(); | |
9576 | END_OF_INSTR(); | |
9577 | } | |
9578 | ||
9579 | /**************************************************************************** | |
9580 | REMARKS: | |
9581 | Handles opcode 0xe5 | |
9582 | ****************************************************************************/ | |
9583 | static void x86emuOp_in_word_AX_IMM(u8 X86EMU_UNUSED(op1)) | |
9584 | { | |
9585 | u8 port; | |
9586 | ||
9587 | START_OF_INSTR(); | |
9588 | DECODE_PRINTF("IN\t"); | |
9589 | port = (u8) fetch_byte_imm(); | |
9590 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
9591 | DECODE_PRINTF2("EAX,%x\n", port); | |
9592 | } else { | |
9593 | DECODE_PRINTF2("AX,%x\n", port); | |
9594 | } | |
9595 | TRACE_AND_STEP(); | |
9596 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
9597 | M.x86.R_EAX = (*sys_inl)(port); | |
9598 | } else { | |
9599 | M.x86.R_AX = (*sys_inw)(port); | |
9600 | } | |
9601 | DECODE_CLEAR_SEGOVR(); | |
9602 | END_OF_INSTR(); | |
9603 | } | |
9604 | ||
9605 | /**************************************************************************** | |
9606 | REMARKS: | |
9607 | Handles opcode 0xe6 | |
9608 | ****************************************************************************/ | |
9609 | static void x86emuOp_out_byte_IMM_AL(u8 X86EMU_UNUSED(op1)) | |
9610 | { | |
9611 | u8 port; | |
9612 | ||
9613 | START_OF_INSTR(); | |
9614 | DECODE_PRINTF("OUT\t"); | |
9615 | port = (u8) fetch_byte_imm(); | |
9616 | DECODE_PRINTF2("%x,AL\n", port); | |
9617 | TRACE_AND_STEP(); | |
9618 | (*sys_outb)(port, M.x86.R_AL); | |
9619 | DECODE_CLEAR_SEGOVR(); | |
9620 | END_OF_INSTR(); | |
9621 | } | |
9622 | ||
9623 | /**************************************************************************** | |
9624 | REMARKS: | |
9625 | Handles opcode 0xe7 | |
9626 | ****************************************************************************/ | |
9627 | static void x86emuOp_out_word_IMM_AX(u8 X86EMU_UNUSED(op1)) | |
9628 | { | |
9629 | u8 port; | |
9630 | ||
9631 | START_OF_INSTR(); | |
9632 | DECODE_PRINTF("OUT\t"); | |
9633 | port = (u8) fetch_byte_imm(); | |
9634 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
9635 | DECODE_PRINTF2("%x,EAX\n", port); | |
9636 | } else { | |
9637 | DECODE_PRINTF2("%x,AX\n", port); | |
9638 | } | |
9639 | TRACE_AND_STEP(); | |
9640 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
9641 | (*sys_outl)(port, M.x86.R_EAX); | |
9642 | } else { | |
9643 | (*sys_outw)(port, M.x86.R_AX); | |
9644 | } | |
9645 | DECODE_CLEAR_SEGOVR(); | |
9646 | END_OF_INSTR(); | |
9647 | } | |
9648 | ||
9649 | /**************************************************************************** | |
9650 | REMARKS: | |
9651 | Handles opcode 0xe8 | |
9652 | ****************************************************************************/ | |
9653 | static void x86emuOp_call_near_IMM(u8 X86EMU_UNUSED(op1)) | |
9654 | { | |
9655 | s16 ip; | |
9656 | ||
9657 | START_OF_INSTR(); | |
9658 | DECODE_PRINTF("CALL\t"); | |
9659 | ip = (s16) fetch_word_imm(); | |
9660 | ip += (s16) M.x86.R_IP; /* CHECK SIGN */ | |
9661 | DECODE_PRINTF2("%04x\n", (u16)ip); | |
9662 | CALL_TRACE(M.x86.saved_cs, M.x86.saved_ip, M.x86.R_CS, ip, ""); | |
9663 | TRACE_AND_STEP(); | |
9664 | push_word(M.x86.R_IP); | |
9665 | M.x86.R_IP = ip; | |
9666 | DECODE_CLEAR_SEGOVR(); | |
9667 | END_OF_INSTR(); | |
9668 | } | |
9669 | ||
9670 | /**************************************************************************** | |
9671 | REMARKS: | |
9672 | Handles opcode 0xe9 | |
9673 | ****************************************************************************/ | |
9674 | static void x86emuOp_jump_near_IMM(u8 X86EMU_UNUSED(op1)) | |
9675 | { | |
9676 | int ip; | |
9677 | ||
9678 | START_OF_INSTR(); | |
9679 | DECODE_PRINTF("JMP\t"); | |
9680 | ip = (s16)fetch_word_imm(); | |
9681 | ip += (s16)M.x86.R_IP; | |
9682 | DECODE_PRINTF2("%04x\n", (u16)ip); | |
9683 | TRACE_AND_STEP(); | |
9684 | M.x86.R_IP = (u16)ip; | |
9685 | DECODE_CLEAR_SEGOVR(); | |
9686 | END_OF_INSTR(); | |
9687 | } | |
9688 | ||
9689 | /**************************************************************************** | |
9690 | REMARKS: | |
9691 | Handles opcode 0xea | |
9692 | ****************************************************************************/ | |
9693 | static void x86emuOp_jump_far_IMM(u8 X86EMU_UNUSED(op1)) | |
9694 | { | |
9695 | u16 cs, ip; | |
9696 | ||
9697 | START_OF_INSTR(); | |
9698 | DECODE_PRINTF("JMP\tFAR "); | |
9699 | ip = fetch_word_imm(); | |
9700 | cs = fetch_word_imm(); | |
9701 | DECODE_PRINTF2("%04x:", cs); | |
9702 | DECODE_PRINTF2("%04x\n", ip); | |
9703 | TRACE_AND_STEP(); | |
9704 | M.x86.R_IP = ip; | |
9705 | M.x86.R_CS = cs; | |
9706 | DECODE_CLEAR_SEGOVR(); | |
9707 | END_OF_INSTR(); | |
9708 | } | |
9709 | ||
9710 | /**************************************************************************** | |
9711 | REMARKS: | |
9712 | Handles opcode 0xeb | |
9713 | ****************************************************************************/ | |
9714 | static void x86emuOp_jump_byte_IMM(u8 X86EMU_UNUSED(op1)) | |
9715 | { | |
9716 | u16 target; | |
9717 | s8 offset; | |
9718 | ||
9719 | START_OF_INSTR(); | |
9720 | DECODE_PRINTF("JMP\t"); | |
9721 | offset = (s8)fetch_byte_imm(); | |
9722 | target = (u16)(M.x86.R_IP + offset); | |
9723 | DECODE_PRINTF2("%x\n", target); | |
9724 | TRACE_AND_STEP(); | |
9725 | M.x86.R_IP = target; | |
9726 | DECODE_CLEAR_SEGOVR(); | |
9727 | END_OF_INSTR(); | |
9728 | } | |
9729 | ||
9730 | /**************************************************************************** | |
9731 | REMARKS: | |
9732 | Handles opcode 0xec | |
9733 | ****************************************************************************/ | |
9734 | static void x86emuOp_in_byte_AL_DX(u8 X86EMU_UNUSED(op1)) | |
9735 | { | |
9736 | START_OF_INSTR(); | |
9737 | DECODE_PRINTF("IN\tAL,DX\n"); | |
9738 | TRACE_AND_STEP(); | |
9739 | M.x86.R_AL = (*sys_inb)(M.x86.R_DX); | |
9740 | DECODE_CLEAR_SEGOVR(); | |
9741 | END_OF_INSTR(); | |
9742 | } | |
9743 | ||
9744 | /**************************************************************************** | |
9745 | REMARKS: | |
9746 | Handles opcode 0xed | |
9747 | ****************************************************************************/ | |
9748 | static void x86emuOp_in_word_AX_DX(u8 X86EMU_UNUSED(op1)) | |
9749 | { | |
9750 | START_OF_INSTR(); | |
9751 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
9752 | DECODE_PRINTF("IN\tEAX,DX\n"); | |
9753 | } else { | |
9754 | DECODE_PRINTF("IN\tAX,DX\n"); | |
9755 | } | |
9756 | TRACE_AND_STEP(); | |
9757 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
9758 | M.x86.R_EAX = (*sys_inl)(M.x86.R_DX); | |
9759 | } else { | |
9760 | M.x86.R_AX = (*sys_inw)(M.x86.R_DX); | |
9761 | } | |
9762 | DECODE_CLEAR_SEGOVR(); | |
9763 | END_OF_INSTR(); | |
9764 | } | |
9765 | ||
9766 | /**************************************************************************** | |
9767 | REMARKS: | |
9768 | Handles opcode 0xee | |
9769 | ****************************************************************************/ | |
9770 | static void x86emuOp_out_byte_DX_AL(u8 X86EMU_UNUSED(op1)) | |
9771 | { | |
9772 | START_OF_INSTR(); | |
9773 | DECODE_PRINTF("OUT\tDX,AL\n"); | |
9774 | TRACE_AND_STEP(); | |
9775 | (*sys_outb)(M.x86.R_DX, M.x86.R_AL); | |
9776 | DECODE_CLEAR_SEGOVR(); | |
9777 | END_OF_INSTR(); | |
9778 | } | |
9779 | ||
9780 | /**************************************************************************** | |
9781 | REMARKS: | |
9782 | Handles opcode 0xef | |
9783 | ****************************************************************************/ | |
9784 | static void x86emuOp_out_word_DX_AX(u8 X86EMU_UNUSED(op1)) | |
9785 | { | |
9786 | START_OF_INSTR(); | |
9787 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
9788 | DECODE_PRINTF("OUT\tDX,EAX\n"); | |
9789 | } else { | |
9790 | DECODE_PRINTF("OUT\tDX,AX\n"); | |
9791 | } | |
9792 | TRACE_AND_STEP(); | |
9793 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
9794 | (*sys_outl)(M.x86.R_DX, M.x86.R_EAX); | |
9795 | } else { | |
9796 | (*sys_outw)(M.x86.R_DX, M.x86.R_AX); | |
9797 | } | |
9798 | DECODE_CLEAR_SEGOVR(); | |
9799 | END_OF_INSTR(); | |
9800 | } | |
9801 | ||
9802 | /**************************************************************************** | |
9803 | REMARKS: | |
9804 | Handles opcode 0xf0 | |
9805 | ****************************************************************************/ | |
9806 | static void x86emuOp_lock(u8 X86EMU_UNUSED(op1)) | |
9807 | { | |
9808 | START_OF_INSTR(); | |
9809 | DECODE_PRINTF("LOCK:\n"); | |
9810 | TRACE_AND_STEP(); | |
9811 | DECODE_CLEAR_SEGOVR(); | |
9812 | END_OF_INSTR(); | |
9813 | } | |
9814 | ||
9815 | /*opcode 0xf1 ILLEGAL OPERATION */ | |
9816 | ||
9817 | /**************************************************************************** | |
9818 | REMARKS: | |
9819 | Handles opcode 0xf2 | |
9820 | ****************************************************************************/ | |
9821 | static void x86emuOp_repne(u8 X86EMU_UNUSED(op1)) | |
9822 | { | |
9823 | START_OF_INSTR(); | |
9824 | DECODE_PRINTF("REPNE\n"); | |
9825 | TRACE_AND_STEP(); | |
9826 | M.x86.mode |= SYSMODE_PREFIX_REPNE; | |
9827 | DECODE_CLEAR_SEGOVR(); | |
9828 | END_OF_INSTR(); | |
9829 | } | |
9830 | ||
9831 | /**************************************************************************** | |
9832 | REMARKS: | |
9833 | Handles opcode 0xf3 | |
9834 | ****************************************************************************/ | |
9835 | static void x86emuOp_repe(u8 X86EMU_UNUSED(op1)) | |
9836 | { | |
9837 | START_OF_INSTR(); | |
9838 | DECODE_PRINTF("REPE\n"); | |
9839 | TRACE_AND_STEP(); | |
9840 | M.x86.mode |= SYSMODE_PREFIX_REPE; | |
9841 | DECODE_CLEAR_SEGOVR(); | |
9842 | END_OF_INSTR(); | |
9843 | } | |
9844 | ||
9845 | /**************************************************************************** | |
9846 | REMARKS: | |
9847 | Handles opcode 0xf4 | |
9848 | ****************************************************************************/ | |
9849 | static void x86emuOp_halt(u8 X86EMU_UNUSED(op1)) | |
9850 | { | |
9851 | START_OF_INSTR(); | |
9852 | DECODE_PRINTF("HALT\n"); | |
9853 | TRACE_AND_STEP(); | |
9854 | HALT_SYS(); | |
9855 | DECODE_CLEAR_SEGOVR(); | |
9856 | END_OF_INSTR(); | |
9857 | } | |
9858 | ||
9859 | /**************************************************************************** | |
9860 | REMARKS: | |
9861 | Handles opcode 0xf5 | |
9862 | ****************************************************************************/ | |
9863 | static void x86emuOp_cmc(u8 X86EMU_UNUSED(op1)) | |
9864 | { | |
9865 | /* complement the carry flag. */ | |
9866 | START_OF_INSTR(); | |
9867 | DECODE_PRINTF("CMC\n"); | |
9868 | TRACE_AND_STEP(); | |
9869 | TOGGLE_FLAG(F_CF); | |
9870 | DECODE_CLEAR_SEGOVR(); | |
9871 | END_OF_INSTR(); | |
9872 | } | |
9873 | ||
9874 | /**************************************************************************** | |
9875 | REMARKS: | |
9876 | Handles opcode 0xf6 | |
9877 | ****************************************************************************/ | |
9878 | static void x86emuOp_opcF6_byte_RM(u8 X86EMU_UNUSED(op1)) | |
9879 | { | |
9880 | int mod, rl, rh; | |
9881 | u8 *destreg; | |
9882 | uint destoffset; | |
9883 | u8 destval, srcval; | |
9884 | ||
9885 | /* long, drawn out code follows. Double switch for a total | |
9886 | of 32 cases. */ | |
9887 | START_OF_INSTR(); | |
9888 | FETCH_DECODE_MODRM(mod, rh, rl); | |
9889 | switch (mod) { | |
9890 | case 0: /* mod=00 */ | |
9891 | switch (rh) { | |
9892 | case 0: /* test byte imm */ | |
9893 | DECODE_PRINTF("TEST\tBYTE PTR "); | |
9894 | destoffset = decode_rm00_address(rl); | |
9895 | DECODE_PRINTF(","); | |
9896 | srcval = fetch_byte_imm(); | |
9897 | DECODE_PRINTF2("%02x\n", srcval); | |
9898 | destval = fetch_data_byte(destoffset); | |
9899 | TRACE_AND_STEP(); | |
9900 | test_byte(destval, srcval); | |
9901 | break; | |
9902 | case 1: | |
9903 | DECODE_PRINTF("ILLEGAL OP MOD=00 RH=01 OP=F6\n"); | |
9904 | HALT_SYS(); | |
9905 | break; | |
9906 | case 2: | |
9907 | DECODE_PRINTF("NOT\tBYTE PTR "); | |
9908 | destoffset = decode_rm00_address(rl); | |
9909 | DECODE_PRINTF("\n"); | |
9910 | destval = fetch_data_byte(destoffset); | |
9911 | TRACE_AND_STEP(); | |
9912 | destval = not_byte(destval); | |
9913 | store_data_byte(destoffset, destval); | |
9914 | break; | |
9915 | case 3: | |
9916 | DECODE_PRINTF("NEG\tBYTE PTR "); | |
9917 | destoffset = decode_rm00_address(rl); | |
9918 | DECODE_PRINTF("\n"); | |
9919 | destval = fetch_data_byte(destoffset); | |
9920 | TRACE_AND_STEP(); | |
9921 | destval = neg_byte(destval); | |
9922 | store_data_byte(destoffset, destval); | |
9923 | break; | |
9924 | case 4: | |
9925 | DECODE_PRINTF("MUL\tBYTE PTR "); | |
9926 | destoffset = decode_rm00_address(rl); | |
9927 | DECODE_PRINTF("\n"); | |
9928 | destval = fetch_data_byte(destoffset); | |
9929 | TRACE_AND_STEP(); | |
9930 | mul_byte(destval); | |
9931 | break; | |
9932 | case 5: | |
9933 | DECODE_PRINTF("IMUL\tBYTE PTR "); | |
9934 | destoffset = decode_rm00_address(rl); | |
9935 | DECODE_PRINTF("\n"); | |
9936 | destval = fetch_data_byte(destoffset); | |
9937 | TRACE_AND_STEP(); | |
9938 | imul_byte(destval); | |
9939 | break; | |
9940 | case 6: | |
9941 | DECODE_PRINTF("DIV\tBYTE PTR "); | |
9942 | destoffset = decode_rm00_address(rl); | |
9943 | DECODE_PRINTF("\n"); | |
9944 | destval = fetch_data_byte(destoffset); | |
9945 | TRACE_AND_STEP(); | |
9946 | div_byte(destval); | |
9947 | break; | |
9948 | case 7: | |
9949 | DECODE_PRINTF("IDIV\tBYTE PTR "); | |
9950 | destoffset = decode_rm00_address(rl); | |
9951 | DECODE_PRINTF("\n"); | |
9952 | destval = fetch_data_byte(destoffset); | |
9953 | TRACE_AND_STEP(); | |
9954 | idiv_byte(destval); | |
9955 | break; | |
9956 | } | |
9957 | break; /* end mod==00 */ | |
9958 | case 1: /* mod=01 */ | |
9959 | switch (rh) { | |
9960 | case 0: /* test byte imm */ | |
9961 | DECODE_PRINTF("TEST\tBYTE PTR "); | |
9962 | destoffset = decode_rm01_address(rl); | |
9963 | DECODE_PRINTF(","); | |
9964 | srcval = fetch_byte_imm(); | |
9965 | DECODE_PRINTF2("%02x\n", srcval); | |
9966 | destval = fetch_data_byte(destoffset); | |
9967 | TRACE_AND_STEP(); | |
9968 | test_byte(destval, srcval); | |
9969 | break; | |
9970 | case 1: | |
9971 | DECODE_PRINTF("ILLEGAL OP MOD=01 RH=01 OP=F6\n"); | |
9972 | HALT_SYS(); | |
9973 | break; | |
9974 | case 2: | |
9975 | DECODE_PRINTF("NOT\tBYTE PTR "); | |
9976 | destoffset = decode_rm01_address(rl); | |
9977 | DECODE_PRINTF("\n"); | |
9978 | destval = fetch_data_byte(destoffset); | |
9979 | TRACE_AND_STEP(); | |
9980 | destval = not_byte(destval); | |
9981 | store_data_byte(destoffset, destval); | |
9982 | break; | |
9983 | case 3: | |
9984 | DECODE_PRINTF("NEG\tBYTE PTR "); | |
9985 | destoffset = decode_rm01_address(rl); | |
9986 | DECODE_PRINTF("\n"); | |
9987 | destval = fetch_data_byte(destoffset); | |
9988 | TRACE_AND_STEP(); | |
9989 | destval = neg_byte(destval); | |
9990 | store_data_byte(destoffset, destval); | |
9991 | break; | |
9992 | case 4: | |
9993 | DECODE_PRINTF("MUL\tBYTE PTR "); | |
9994 | destoffset = decode_rm01_address(rl); | |
9995 | DECODE_PRINTF("\n"); | |
9996 | destval = fetch_data_byte(destoffset); | |
9997 | TRACE_AND_STEP(); | |
9998 | mul_byte(destval); | |
9999 | break; | |
10000 | case 5: | |
10001 | DECODE_PRINTF("IMUL\tBYTE PTR "); | |
10002 | destoffset = decode_rm01_address(rl); | |
10003 | DECODE_PRINTF("\n"); | |
10004 | destval = fetch_data_byte(destoffset); | |
10005 | TRACE_AND_STEP(); | |
10006 | imul_byte(destval); | |
10007 | break; | |
10008 | case 6: | |
10009 | DECODE_PRINTF("DIV\tBYTE PTR "); | |
10010 | destoffset = decode_rm01_address(rl); | |
10011 | DECODE_PRINTF("\n"); | |
10012 | destval = fetch_data_byte(destoffset); | |
10013 | TRACE_AND_STEP(); | |
10014 | div_byte(destval); | |
10015 | break; | |
10016 | case 7: | |
10017 | DECODE_PRINTF("IDIV\tBYTE PTR "); | |
10018 | destoffset = decode_rm01_address(rl); | |
10019 | DECODE_PRINTF("\n"); | |
10020 | destval = fetch_data_byte(destoffset); | |
10021 | TRACE_AND_STEP(); | |
10022 | idiv_byte(destval); | |
10023 | break; | |
10024 | } | |
10025 | break; /* end mod==01 */ | |
10026 | case 2: /* mod=10 */ | |
10027 | switch (rh) { | |
10028 | case 0: /* test byte imm */ | |
10029 | DECODE_PRINTF("TEST\tBYTE PTR "); | |
10030 | destoffset = decode_rm10_address(rl); | |
10031 | DECODE_PRINTF(","); | |
10032 | srcval = fetch_byte_imm(); | |
10033 | DECODE_PRINTF2("%02x\n", srcval); | |
10034 | destval = fetch_data_byte(destoffset); | |
10035 | TRACE_AND_STEP(); | |
10036 | test_byte(destval, srcval); | |
10037 | break; | |
10038 | case 1: | |
10039 | DECODE_PRINTF("ILLEGAL OP MOD=10 RH=01 OP=F6\n"); | |
10040 | HALT_SYS(); | |
10041 | break; | |
10042 | case 2: | |
10043 | DECODE_PRINTF("NOT\tBYTE PTR "); | |
10044 | destoffset = decode_rm10_address(rl); | |
10045 | DECODE_PRINTF("\n"); | |
10046 | destval = fetch_data_byte(destoffset); | |
10047 | TRACE_AND_STEP(); | |
10048 | destval = not_byte(destval); | |
10049 | store_data_byte(destoffset, destval); | |
10050 | break; | |
10051 | case 3: | |
10052 | DECODE_PRINTF("NEG\tBYTE PTR "); | |
10053 | destoffset = decode_rm10_address(rl); | |
10054 | DECODE_PRINTF("\n"); | |
10055 | destval = fetch_data_byte(destoffset); | |
10056 | TRACE_AND_STEP(); | |
10057 | destval = neg_byte(destval); | |
10058 | store_data_byte(destoffset, destval); | |
10059 | break; | |
10060 | case 4: | |
10061 | DECODE_PRINTF("MUL\tBYTE PTR "); | |
10062 | destoffset = decode_rm10_address(rl); | |
10063 | DECODE_PRINTF("\n"); | |
10064 | destval = fetch_data_byte(destoffset); | |
10065 | TRACE_AND_STEP(); | |
10066 | mul_byte(destval); | |
10067 | break; | |
10068 | case 5: | |
10069 | DECODE_PRINTF("IMUL\tBYTE PTR "); | |
10070 | destoffset = decode_rm10_address(rl); | |
10071 | DECODE_PRINTF("\n"); | |
10072 | destval = fetch_data_byte(destoffset); | |
10073 | TRACE_AND_STEP(); | |
10074 | imul_byte(destval); | |
10075 | break; | |
10076 | case 6: | |
10077 | DECODE_PRINTF("DIV\tBYTE PTR "); | |
10078 | destoffset = decode_rm10_address(rl); | |
10079 | DECODE_PRINTF("\n"); | |
10080 | destval = fetch_data_byte(destoffset); | |
10081 | TRACE_AND_STEP(); | |
10082 | div_byte(destval); | |
10083 | break; | |
10084 | case 7: | |
10085 | DECODE_PRINTF("IDIV\tBYTE PTR "); | |
10086 | destoffset = decode_rm10_address(rl); | |
10087 | DECODE_PRINTF("\n"); | |
10088 | destval = fetch_data_byte(destoffset); | |
10089 | TRACE_AND_STEP(); | |
10090 | idiv_byte(destval); | |
10091 | break; | |
10092 | } | |
10093 | break; /* end mod==10 */ | |
10094 | case 3: /* mod=11 */ | |
10095 | switch (rh) { | |
10096 | case 0: /* test byte imm */ | |
10097 | DECODE_PRINTF("TEST\t"); | |
10098 | destreg = DECODE_RM_BYTE_REGISTER(rl); | |
10099 | DECODE_PRINTF(","); | |
10100 | srcval = fetch_byte_imm(); | |
10101 | DECODE_PRINTF2("%02x\n", srcval); | |
10102 | TRACE_AND_STEP(); | |
10103 | test_byte(*destreg, srcval); | |
10104 | break; | |
10105 | case 1: | |
10106 | DECODE_PRINTF("ILLEGAL OP MOD=00 RH=01 OP=F6\n"); | |
10107 | HALT_SYS(); | |
10108 | break; | |
10109 | case 2: | |
10110 | DECODE_PRINTF("NOT\t"); | |
10111 | destreg = DECODE_RM_BYTE_REGISTER(rl); | |
10112 | DECODE_PRINTF("\n"); | |
10113 | TRACE_AND_STEP(); | |
10114 | *destreg = not_byte(*destreg); | |
10115 | break; | |
10116 | case 3: | |
10117 | DECODE_PRINTF("NEG\t"); | |
10118 | destreg = DECODE_RM_BYTE_REGISTER(rl); | |
10119 | DECODE_PRINTF("\n"); | |
10120 | TRACE_AND_STEP(); | |
10121 | *destreg = neg_byte(*destreg); | |
10122 | break; | |
10123 | case 4: | |
10124 | DECODE_PRINTF("MUL\t"); | |
10125 | destreg = DECODE_RM_BYTE_REGISTER(rl); | |
10126 | DECODE_PRINTF("\n"); | |
10127 | TRACE_AND_STEP(); | |
10128 | mul_byte(*destreg); /*!!! */ | |
10129 | break; | |
10130 | case 5: | |
10131 | DECODE_PRINTF("IMUL\t"); | |
10132 | destreg = DECODE_RM_BYTE_REGISTER(rl); | |
10133 | DECODE_PRINTF("\n"); | |
10134 | TRACE_AND_STEP(); | |
10135 | imul_byte(*destreg); | |
10136 | break; | |
10137 | case 6: | |
10138 | DECODE_PRINTF("DIV\t"); | |
10139 | destreg = DECODE_RM_BYTE_REGISTER(rl); | |
10140 | DECODE_PRINTF("\n"); | |
10141 | TRACE_AND_STEP(); | |
10142 | div_byte(*destreg); | |
10143 | break; | |
10144 | case 7: | |
10145 | DECODE_PRINTF("IDIV\t"); | |
10146 | destreg = DECODE_RM_BYTE_REGISTER(rl); | |
10147 | DECODE_PRINTF("\n"); | |
10148 | TRACE_AND_STEP(); | |
10149 | idiv_byte(*destreg); | |
10150 | break; | |
10151 | } | |
10152 | break; /* end mod==11 */ | |
10153 | } | |
10154 | DECODE_CLEAR_SEGOVR(); | |
10155 | END_OF_INSTR(); | |
10156 | } | |
10157 | ||
10158 | /**************************************************************************** | |
10159 | REMARKS: | |
10160 | Handles opcode 0xf7 | |
10161 | ****************************************************************************/ | |
10162 | static void x86emuOp_opcF7_word_RM(u8 X86EMU_UNUSED(op1)) | |
10163 | { | |
10164 | int mod, rl, rh; | |
10165 | uint destoffset; | |
10166 | ||
10167 | /* long, drawn out code follows. Double switch for a total | |
10168 | of 32 cases. */ | |
10169 | START_OF_INSTR(); | |
10170 | FETCH_DECODE_MODRM(mod, rh, rl); | |
10171 | switch (mod) { | |
10172 | case 0: /* mod=00 */ | |
10173 | switch (rh) { | |
10174 | case 0: /* test word imm */ | |
10175 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
10176 | u32 destval,srcval; | |
10177 | ||
10178 | DECODE_PRINTF("TEST\tDWORD PTR "); | |
10179 | destoffset = decode_rm00_address(rl); | |
10180 | DECODE_PRINTF(","); | |
10181 | srcval = fetch_long_imm(); | |
10182 | DECODE_PRINTF2("%x\n", srcval); | |
10183 | destval = fetch_data_long(destoffset); | |
10184 | TRACE_AND_STEP(); | |
10185 | test_long(destval, srcval); | |
10186 | } else { | |
10187 | u16 destval,srcval; | |
10188 | ||
10189 | DECODE_PRINTF("TEST\tWORD PTR "); | |
10190 | destoffset = decode_rm00_address(rl); | |
10191 | DECODE_PRINTF(","); | |
10192 | srcval = fetch_word_imm(); | |
10193 | DECODE_PRINTF2("%x\n", srcval); | |
10194 | destval = fetch_data_word(destoffset); | |
10195 | TRACE_AND_STEP(); | |
10196 | test_word(destval, srcval); | |
10197 | } | |
10198 | break; | |
10199 | case 1: | |
10200 | DECODE_PRINTF("ILLEGAL OP MOD=00 RH=01 OP=F7\n"); | |
10201 | HALT_SYS(); | |
10202 | break; | |
10203 | case 2: | |
10204 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
10205 | u32 destval; | |
10206 | ||
10207 | DECODE_PRINTF("NOT\tDWORD PTR "); | |
10208 | destoffset = decode_rm00_address(rl); | |
10209 | DECODE_PRINTF("\n"); | |
10210 | destval = fetch_data_long(destoffset); | |
10211 | TRACE_AND_STEP(); | |
10212 | destval = not_long(destval); | |
10213 | store_data_long(destoffset, destval); | |
10214 | } else { | |
10215 | u16 destval; | |
10216 | ||
10217 | DECODE_PRINTF("NOT\tWORD PTR "); | |
10218 | destoffset = decode_rm00_address(rl); | |
10219 | DECODE_PRINTF("\n"); | |
10220 | destval = fetch_data_word(destoffset); | |
10221 | TRACE_AND_STEP(); | |
10222 | destval = not_word(destval); | |
10223 | store_data_word(destoffset, destval); | |
10224 | } | |
10225 | break; | |
10226 | case 3: | |
10227 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
10228 | u32 destval; | |
10229 | ||
10230 | DECODE_PRINTF("NEG\tDWORD PTR "); | |
10231 | destoffset = decode_rm00_address(rl); | |
10232 | DECODE_PRINTF("\n"); | |
10233 | destval = fetch_data_long(destoffset); | |
10234 | TRACE_AND_STEP(); | |
10235 | destval = neg_long(destval); | |
10236 | store_data_long(destoffset, destval); | |
10237 | } else { | |
10238 | u16 destval; | |
10239 | ||
10240 | DECODE_PRINTF("NEG\tWORD PTR "); | |
10241 | destoffset = decode_rm00_address(rl); | |
10242 | DECODE_PRINTF("\n"); | |
10243 | destval = fetch_data_word(destoffset); | |
10244 | TRACE_AND_STEP(); | |
10245 | destval = neg_word(destval); | |
10246 | store_data_word(destoffset, destval); | |
10247 | } | |
10248 | break; | |
10249 | case 4: | |
10250 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
10251 | u32 destval; | |
10252 | ||
10253 | DECODE_PRINTF("MUL\tDWORD PTR "); | |
10254 | destoffset = decode_rm00_address(rl); | |
10255 | DECODE_PRINTF("\n"); | |
10256 | destval = fetch_data_long(destoffset); | |
10257 | TRACE_AND_STEP(); | |
10258 | mul_long(destval); | |
10259 | } else { | |
10260 | u16 destval; | |
10261 | ||
10262 | DECODE_PRINTF("MUL\tWORD PTR "); | |
10263 | destoffset = decode_rm00_address(rl); | |
10264 | DECODE_PRINTF("\n"); | |
10265 | destval = fetch_data_word(destoffset); | |
10266 | TRACE_AND_STEP(); | |
10267 | mul_word(destval); | |
10268 | } | |
10269 | break; | |
10270 | case 5: | |
10271 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
10272 | u32 destval; | |
10273 | ||
10274 | DECODE_PRINTF("IMUL\tDWORD PTR "); | |
10275 | destoffset = decode_rm00_address(rl); | |
10276 | DECODE_PRINTF("\n"); | |
10277 | destval = fetch_data_long(destoffset); | |
10278 | TRACE_AND_STEP(); | |
10279 | imul_long(destval); | |
10280 | } else { | |
10281 | u16 destval; | |
10282 | ||
10283 | DECODE_PRINTF("IMUL\tWORD PTR "); | |
10284 | destoffset = decode_rm00_address(rl); | |
10285 | DECODE_PRINTF("\n"); | |
10286 | destval = fetch_data_word(destoffset); | |
10287 | TRACE_AND_STEP(); | |
10288 | imul_word(destval); | |
10289 | } | |
10290 | break; | |
10291 | case 6: | |
10292 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
10293 | u32 destval; | |
10294 | ||
10295 | DECODE_PRINTF("DIV\tDWORD PTR "); | |
10296 | destoffset = decode_rm00_address(rl); | |
10297 | DECODE_PRINTF("\n"); | |
10298 | destval = fetch_data_long(destoffset); | |
10299 | TRACE_AND_STEP(); | |
10300 | div_long(destval); | |
10301 | } else { | |
10302 | u16 destval; | |
10303 | ||
10304 | DECODE_PRINTF("DIV\tWORD PTR "); | |
10305 | destoffset = decode_rm00_address(rl); | |
10306 | DECODE_PRINTF("\n"); | |
10307 | destval = fetch_data_word(destoffset); | |
10308 | TRACE_AND_STEP(); | |
10309 | div_word(destval); | |
10310 | } | |
10311 | break; | |
10312 | case 7: | |
10313 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
10314 | u32 destval; | |
10315 | ||
10316 | DECODE_PRINTF("IDIV\tDWORD PTR "); | |
10317 | destoffset = decode_rm00_address(rl); | |
10318 | DECODE_PRINTF("\n"); | |
10319 | destval = fetch_data_long(destoffset); | |
10320 | TRACE_AND_STEP(); | |
10321 | idiv_long(destval); | |
10322 | } else { | |
10323 | u16 destval; | |
10324 | ||
10325 | DECODE_PRINTF("IDIV\tWORD PTR "); | |
10326 | destoffset = decode_rm00_address(rl); | |
10327 | DECODE_PRINTF("\n"); | |
10328 | destval = fetch_data_word(destoffset); | |
10329 | TRACE_AND_STEP(); | |
10330 | idiv_word(destval); | |
10331 | } | |
10332 | break; | |
10333 | } | |
10334 | break; /* end mod==00 */ | |
10335 | case 1: /* mod=01 */ | |
10336 | switch (rh) { | |
10337 | case 0: /* test word imm */ | |
10338 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
10339 | u32 destval,srcval; | |
10340 | ||
10341 | DECODE_PRINTF("TEST\tDWORD PTR "); | |
10342 | destoffset = decode_rm01_address(rl); | |
10343 | DECODE_PRINTF(","); | |
10344 | srcval = fetch_long_imm(); | |
10345 | DECODE_PRINTF2("%x\n", srcval); | |
10346 | destval = fetch_data_long(destoffset); | |
10347 | TRACE_AND_STEP(); | |
10348 | test_long(destval, srcval); | |
10349 | } else { | |
10350 | u16 destval,srcval; | |
10351 | ||
10352 | DECODE_PRINTF("TEST\tWORD PTR "); | |
10353 | destoffset = decode_rm01_address(rl); | |
10354 | DECODE_PRINTF(","); | |
10355 | srcval = fetch_word_imm(); | |
10356 | DECODE_PRINTF2("%x\n", srcval); | |
10357 | destval = fetch_data_word(destoffset); | |
10358 | TRACE_AND_STEP(); | |
10359 | test_word(destval, srcval); | |
10360 | } | |
10361 | break; | |
10362 | case 1: | |
10363 | DECODE_PRINTF("ILLEGAL OP MOD=01 RH=01 OP=F6\n"); | |
10364 | HALT_SYS(); | |
10365 | break; | |
10366 | case 2: | |
10367 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
10368 | u32 destval; | |
10369 | ||
10370 | DECODE_PRINTF("NOT\tDWORD PTR "); | |
10371 | destoffset = decode_rm01_address(rl); | |
10372 | DECODE_PRINTF("\n"); | |
10373 | destval = fetch_data_long(destoffset); | |
10374 | TRACE_AND_STEP(); | |
10375 | destval = not_long(destval); | |
10376 | store_data_long(destoffset, destval); | |
10377 | } else { | |
10378 | u16 destval; | |
10379 | ||
10380 | DECODE_PRINTF("NOT\tWORD PTR "); | |
10381 | destoffset = decode_rm01_address(rl); | |
10382 | DECODE_PRINTF("\n"); | |
10383 | destval = fetch_data_word(destoffset); | |
10384 | TRACE_AND_STEP(); | |
10385 | destval = not_word(destval); | |
10386 | store_data_word(destoffset, destval); | |
10387 | } | |
10388 | break; | |
10389 | case 3: | |
10390 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
10391 | u32 destval; | |
10392 | ||
10393 | DECODE_PRINTF("NEG\tDWORD PTR "); | |
10394 | destoffset = decode_rm01_address(rl); | |
10395 | DECODE_PRINTF("\n"); | |
10396 | destval = fetch_data_long(destoffset); | |
10397 | TRACE_AND_STEP(); | |
10398 | destval = neg_long(destval); | |
10399 | store_data_long(destoffset, destval); | |
10400 | } else { | |
10401 | u16 destval; | |
10402 | ||
10403 | DECODE_PRINTF("NEG\tWORD PTR "); | |
10404 | destoffset = decode_rm01_address(rl); | |
10405 | DECODE_PRINTF("\n"); | |
10406 | destval = fetch_data_word(destoffset); | |
10407 | TRACE_AND_STEP(); | |
10408 | destval = neg_word(destval); | |
10409 | store_data_word(destoffset, destval); | |
10410 | } | |
10411 | break; | |
10412 | case 4: | |
10413 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
10414 | u32 destval; | |
10415 | ||
10416 | DECODE_PRINTF("MUL\tDWORD PTR "); | |
10417 | destoffset = decode_rm01_address(rl); | |
10418 | DECODE_PRINTF("\n"); | |
10419 | destval = fetch_data_long(destoffset); | |
10420 | TRACE_AND_STEP(); | |
10421 | mul_long(destval); | |
10422 | } else { | |
10423 | u16 destval; | |
10424 | ||
10425 | DECODE_PRINTF("MUL\tWORD PTR "); | |
10426 | destoffset = decode_rm01_address(rl); | |
10427 | DECODE_PRINTF("\n"); | |
10428 | destval = fetch_data_word(destoffset); | |
10429 | TRACE_AND_STEP(); | |
10430 | mul_word(destval); | |
10431 | } | |
10432 | break; | |
10433 | case 5: | |
10434 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
10435 | u32 destval; | |
10436 | ||
10437 | DECODE_PRINTF("IMUL\tDWORD PTR "); | |
10438 | destoffset = decode_rm01_address(rl); | |
10439 | DECODE_PRINTF("\n"); | |
10440 | destval = fetch_data_long(destoffset); | |
10441 | TRACE_AND_STEP(); | |
10442 | imul_long(destval); | |
10443 | } else { | |
10444 | u16 destval; | |
10445 | ||
10446 | DECODE_PRINTF("IMUL\tWORD PTR "); | |
10447 | destoffset = decode_rm01_address(rl); | |
10448 | DECODE_PRINTF("\n"); | |
10449 | destval = fetch_data_word(destoffset); | |
10450 | TRACE_AND_STEP(); | |
10451 | imul_word(destval); | |
10452 | } | |
10453 | break; | |
10454 | case 6: | |
10455 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
10456 | u32 destval; | |
10457 | ||
10458 | DECODE_PRINTF("DIV\tDWORD PTR "); | |
10459 | destoffset = decode_rm01_address(rl); | |
10460 | DECODE_PRINTF("\n"); | |
10461 | destval = fetch_data_long(destoffset); | |
10462 | TRACE_AND_STEP(); | |
10463 | div_long(destval); | |
10464 | } else { | |
10465 | u16 destval; | |
10466 | ||
10467 | DECODE_PRINTF("DIV\tWORD PTR "); | |
10468 | destoffset = decode_rm01_address(rl); | |
10469 | DECODE_PRINTF("\n"); | |
10470 | destval = fetch_data_word(destoffset); | |
10471 | TRACE_AND_STEP(); | |
10472 | div_word(destval); | |
10473 | } | |
10474 | break; | |
10475 | case 7: | |
10476 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
10477 | u32 destval; | |
10478 | ||
10479 | DECODE_PRINTF("IDIV\tDWORD PTR "); | |
10480 | destoffset = decode_rm01_address(rl); | |
10481 | DECODE_PRINTF("\n"); | |
10482 | destval = fetch_data_long(destoffset); | |
10483 | TRACE_AND_STEP(); | |
10484 | idiv_long(destval); | |
10485 | } else { | |
10486 | u16 destval; | |
10487 | ||
10488 | DECODE_PRINTF("IDIV\tWORD PTR "); | |
10489 | destoffset = decode_rm01_address(rl); | |
10490 | DECODE_PRINTF("\n"); | |
10491 | destval = fetch_data_word(destoffset); | |
10492 | TRACE_AND_STEP(); | |
10493 | idiv_word(destval); | |
10494 | } | |
10495 | break; | |
10496 | } | |
10497 | break; /* end mod==01 */ | |
10498 | case 2: /* mod=10 */ | |
10499 | switch (rh) { | |
10500 | case 0: /* test word imm */ | |
10501 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
10502 | u32 destval,srcval; | |
10503 | ||
10504 | DECODE_PRINTF("TEST\tDWORD PTR "); | |
10505 | destoffset = decode_rm10_address(rl); | |
10506 | DECODE_PRINTF(","); | |
10507 | srcval = fetch_long_imm(); | |
10508 | DECODE_PRINTF2("%x\n", srcval); | |
10509 | destval = fetch_data_long(destoffset); | |
10510 | TRACE_AND_STEP(); | |
10511 | test_long(destval, srcval); | |
10512 | } else { | |
10513 | u16 destval,srcval; | |
10514 | ||
10515 | DECODE_PRINTF("TEST\tWORD PTR "); | |
10516 | destoffset = decode_rm10_address(rl); | |
10517 | DECODE_PRINTF(","); | |
10518 | srcval = fetch_word_imm(); | |
10519 | DECODE_PRINTF2("%x\n", srcval); | |
10520 | destval = fetch_data_word(destoffset); | |
10521 | TRACE_AND_STEP(); | |
10522 | test_word(destval, srcval); | |
10523 | } | |
10524 | break; | |
10525 | case 1: | |
10526 | DECODE_PRINTF("ILLEGAL OP MOD=10 RH=01 OP=F6\n"); | |
10527 | HALT_SYS(); | |
10528 | break; | |
10529 | case 2: | |
10530 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
10531 | u32 destval; | |
10532 | ||
10533 | DECODE_PRINTF("NOT\tDWORD PTR "); | |
10534 | destoffset = decode_rm10_address(rl); | |
10535 | DECODE_PRINTF("\n"); | |
10536 | destval = fetch_data_long(destoffset); | |
10537 | TRACE_AND_STEP(); | |
10538 | destval = not_long(destval); | |
10539 | store_data_long(destoffset, destval); | |
10540 | } else { | |
10541 | u16 destval; | |
10542 | ||
10543 | DECODE_PRINTF("NOT\tWORD PTR "); | |
10544 | destoffset = decode_rm10_address(rl); | |
10545 | DECODE_PRINTF("\n"); | |
10546 | destval = fetch_data_word(destoffset); | |
10547 | TRACE_AND_STEP(); | |
10548 | destval = not_word(destval); | |
10549 | store_data_word(destoffset, destval); | |
10550 | } | |
10551 | break; | |
10552 | case 3: | |
10553 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
10554 | u32 destval; | |
10555 | ||
10556 | DECODE_PRINTF("NEG\tDWORD PTR "); | |
10557 | destoffset = decode_rm10_address(rl); | |
10558 | DECODE_PRINTF("\n"); | |
10559 | destval = fetch_data_long(destoffset); | |
10560 | TRACE_AND_STEP(); | |
10561 | destval = neg_long(destval); | |
10562 | store_data_long(destoffset, destval); | |
10563 | } else { | |
10564 | u16 destval; | |
10565 | ||
10566 | DECODE_PRINTF("NEG\tWORD PTR "); | |
10567 | destoffset = decode_rm10_address(rl); | |
10568 | DECODE_PRINTF("\n"); | |
10569 | destval = fetch_data_word(destoffset); | |
10570 | TRACE_AND_STEP(); | |
10571 | destval = neg_word(destval); | |
10572 | store_data_word(destoffset, destval); | |
10573 | } | |
10574 | break; | |
10575 | case 4: | |
10576 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
10577 | u32 destval; | |
10578 | ||
10579 | DECODE_PRINTF("MUL\tDWORD PTR "); | |
10580 | destoffset = decode_rm10_address(rl); | |
10581 | DECODE_PRINTF("\n"); | |
10582 | destval = fetch_data_long(destoffset); | |
10583 | TRACE_AND_STEP(); | |
10584 | mul_long(destval); | |
10585 | } else { | |
10586 | u16 destval; | |
10587 | ||
10588 | DECODE_PRINTF("MUL\tWORD PTR "); | |
10589 | destoffset = decode_rm10_address(rl); | |
10590 | DECODE_PRINTF("\n"); | |
10591 | destval = fetch_data_word(destoffset); | |
10592 | TRACE_AND_STEP(); | |
10593 | mul_word(destval); | |
10594 | } | |
10595 | break; | |
10596 | case 5: | |
10597 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
10598 | u32 destval; | |
10599 | ||
10600 | DECODE_PRINTF("IMUL\tDWORD PTR "); | |
10601 | destoffset = decode_rm10_address(rl); | |
10602 | DECODE_PRINTF("\n"); | |
10603 | destval = fetch_data_long(destoffset); | |
10604 | TRACE_AND_STEP(); | |
10605 | imul_long(destval); | |
10606 | } else { | |
10607 | u16 destval; | |
10608 | ||
10609 | DECODE_PRINTF("IMUL\tWORD PTR "); | |
10610 | destoffset = decode_rm10_address(rl); | |
10611 | DECODE_PRINTF("\n"); | |
10612 | destval = fetch_data_word(destoffset); | |
10613 | TRACE_AND_STEP(); | |
10614 | imul_word(destval); | |
10615 | } | |
10616 | break; | |
10617 | case 6: | |
10618 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
10619 | u32 destval; | |
10620 | ||
10621 | DECODE_PRINTF("DIV\tDWORD PTR "); | |
10622 | destoffset = decode_rm10_address(rl); | |
10623 | DECODE_PRINTF("\n"); | |
10624 | destval = fetch_data_long(destoffset); | |
10625 | TRACE_AND_STEP(); | |
10626 | div_long(destval); | |
10627 | } else { | |
10628 | u16 destval; | |
10629 | ||
10630 | DECODE_PRINTF("DIV\tWORD PTR "); | |
10631 | destoffset = decode_rm10_address(rl); | |
10632 | DECODE_PRINTF("\n"); | |
10633 | destval = fetch_data_word(destoffset); | |
10634 | TRACE_AND_STEP(); | |
10635 | div_word(destval); | |
10636 | } | |
10637 | break; | |
10638 | case 7: | |
10639 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
10640 | u32 destval; | |
10641 | ||
10642 | DECODE_PRINTF("IDIV\tDWORD PTR "); | |
10643 | destoffset = decode_rm10_address(rl); | |
10644 | DECODE_PRINTF("\n"); | |
10645 | destval = fetch_data_long(destoffset); | |
10646 | TRACE_AND_STEP(); | |
10647 | idiv_long(destval); | |
10648 | } else { | |
10649 | u16 destval; | |
10650 | ||
10651 | DECODE_PRINTF("IDIV\tWORD PTR "); | |
10652 | destoffset = decode_rm10_address(rl); | |
10653 | DECODE_PRINTF("\n"); | |
10654 | destval = fetch_data_word(destoffset); | |
10655 | TRACE_AND_STEP(); | |
10656 | idiv_word(destval); | |
10657 | } | |
10658 | break; | |
10659 | } | |
10660 | break; /* end mod==10 */ | |
10661 | case 3: /* mod=11 */ | |
10662 | switch (rh) { | |
10663 | case 0: /* test word imm */ | |
10664 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
10665 | u32 *destreg; | |
10666 | u32 srcval; | |
10667 | ||
10668 | DECODE_PRINTF("TEST\t"); | |
10669 | destreg = DECODE_RM_LONG_REGISTER(rl); | |
10670 | DECODE_PRINTF(","); | |
10671 | srcval = fetch_long_imm(); | |
10672 | DECODE_PRINTF2("%x\n", srcval); | |
10673 | TRACE_AND_STEP(); | |
10674 | test_long(*destreg, srcval); | |
10675 | } else { | |
10676 | u16 *destreg; | |
10677 | u16 srcval; | |
10678 | ||
10679 | DECODE_PRINTF("TEST\t"); | |
10680 | destreg = DECODE_RM_WORD_REGISTER(rl); | |
10681 | DECODE_PRINTF(","); | |
10682 | srcval = fetch_word_imm(); | |
10683 | DECODE_PRINTF2("%x\n", srcval); | |
10684 | TRACE_AND_STEP(); | |
10685 | test_word(*destreg, srcval); | |
10686 | } | |
10687 | break; | |
10688 | case 1: | |
10689 | DECODE_PRINTF("ILLEGAL OP MOD=00 RH=01 OP=F6\n"); | |
10690 | HALT_SYS(); | |
10691 | break; | |
10692 | case 2: | |
10693 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
10694 | u32 *destreg; | |
10695 | ||
10696 | DECODE_PRINTF("NOT\t"); | |
10697 | destreg = DECODE_RM_LONG_REGISTER(rl); | |
10698 | DECODE_PRINTF("\n"); | |
10699 | TRACE_AND_STEP(); | |
10700 | *destreg = not_long(*destreg); | |
10701 | } else { | |
10702 | u16 *destreg; | |
10703 | ||
10704 | DECODE_PRINTF("NOT\t"); | |
10705 | destreg = DECODE_RM_WORD_REGISTER(rl); | |
10706 | DECODE_PRINTF("\n"); | |
10707 | TRACE_AND_STEP(); | |
10708 | *destreg = not_word(*destreg); | |
10709 | } | |
10710 | break; | |
10711 | case 3: | |
10712 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
10713 | u32 *destreg; | |
10714 | ||
10715 | DECODE_PRINTF("NEG\t"); | |
10716 | destreg = DECODE_RM_LONG_REGISTER(rl); | |
10717 | DECODE_PRINTF("\n"); | |
10718 | TRACE_AND_STEP(); | |
10719 | *destreg = neg_long(*destreg); | |
10720 | } else { | |
10721 | u16 *destreg; | |
10722 | ||
10723 | DECODE_PRINTF("NEG\t"); | |
10724 | destreg = DECODE_RM_WORD_REGISTER(rl); | |
10725 | DECODE_PRINTF("\n"); | |
10726 | TRACE_AND_STEP(); | |
10727 | *destreg = neg_word(*destreg); | |
10728 | } | |
10729 | break; | |
10730 | case 4: | |
10731 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
10732 | u32 *destreg; | |
10733 | ||
10734 | DECODE_PRINTF("MUL\t"); | |
10735 | destreg = DECODE_RM_LONG_REGISTER(rl); | |
10736 | DECODE_PRINTF("\n"); | |
10737 | TRACE_AND_STEP(); | |
10738 | mul_long(*destreg); /*!!! */ | |
10739 | } else { | |
10740 | u16 *destreg; | |
10741 | ||
10742 | DECODE_PRINTF("MUL\t"); | |
10743 | destreg = DECODE_RM_WORD_REGISTER(rl); | |
10744 | DECODE_PRINTF("\n"); | |
10745 | TRACE_AND_STEP(); | |
10746 | mul_word(*destreg); /*!!! */ | |
10747 | } | |
10748 | break; | |
10749 | case 5: | |
10750 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
10751 | u32 *destreg; | |
10752 | ||
10753 | DECODE_PRINTF("IMUL\t"); | |
10754 | destreg = DECODE_RM_LONG_REGISTER(rl); | |
10755 | DECODE_PRINTF("\n"); | |
10756 | TRACE_AND_STEP(); | |
10757 | imul_long(*destreg); | |
10758 | } else { | |
10759 | u16 *destreg; | |
10760 | ||
10761 | DECODE_PRINTF("IMUL\t"); | |
10762 | destreg = DECODE_RM_WORD_REGISTER(rl); | |
10763 | DECODE_PRINTF("\n"); | |
10764 | TRACE_AND_STEP(); | |
10765 | imul_word(*destreg); | |
10766 | } | |
10767 | break; | |
10768 | case 6: | |
10769 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
10770 | u32 *destreg; | |
10771 | ||
10772 | DECODE_PRINTF("DIV\t"); | |
10773 | destreg = DECODE_RM_LONG_REGISTER(rl); | |
10774 | DECODE_PRINTF("\n"); | |
10775 | TRACE_AND_STEP(); | |
10776 | div_long(*destreg); | |
10777 | } else { | |
10778 | u16 *destreg; | |
10779 | ||
10780 | DECODE_PRINTF("DIV\t"); | |
10781 | destreg = DECODE_RM_WORD_REGISTER(rl); | |
10782 | DECODE_PRINTF("\n"); | |
10783 | TRACE_AND_STEP(); | |
10784 | div_word(*destreg); | |
10785 | } | |
10786 | break; | |
10787 | case 7: | |
10788 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
10789 | u32 *destreg; | |
10790 | ||
10791 | DECODE_PRINTF("IDIV\t"); | |
10792 | destreg = DECODE_RM_LONG_REGISTER(rl); | |
10793 | DECODE_PRINTF("\n"); | |
10794 | TRACE_AND_STEP(); | |
10795 | idiv_long(*destreg); | |
10796 | } else { | |
10797 | u16 *destreg; | |
10798 | ||
10799 | DECODE_PRINTF("IDIV\t"); | |
10800 | destreg = DECODE_RM_WORD_REGISTER(rl); | |
10801 | DECODE_PRINTF("\n"); | |
10802 | TRACE_AND_STEP(); | |
10803 | idiv_word(*destreg); | |
10804 | } | |
10805 | break; | |
10806 | } | |
10807 | break; /* end mod==11 */ | |
10808 | } | |
10809 | DECODE_CLEAR_SEGOVR(); | |
10810 | END_OF_INSTR(); | |
10811 | } | |
10812 | ||
10813 | /**************************************************************************** | |
10814 | REMARKS: | |
10815 | Handles opcode 0xf8 | |
10816 | ****************************************************************************/ | |
10817 | static void x86emuOp_clc(u8 X86EMU_UNUSED(op1)) | |
10818 | { | |
10819 | /* clear the carry flag. */ | |
10820 | START_OF_INSTR(); | |
10821 | DECODE_PRINTF("CLC\n"); | |
10822 | TRACE_AND_STEP(); | |
10823 | CLEAR_FLAG(F_CF); | |
10824 | DECODE_CLEAR_SEGOVR(); | |
10825 | END_OF_INSTR(); | |
10826 | } | |
10827 | ||
10828 | /**************************************************************************** | |
10829 | REMARKS: | |
10830 | Handles opcode 0xf9 | |
10831 | ****************************************************************************/ | |
10832 | static void x86emuOp_stc(u8 X86EMU_UNUSED(op1)) | |
10833 | { | |
10834 | /* set the carry flag. */ | |
10835 | START_OF_INSTR(); | |
10836 | DECODE_PRINTF("STC\n"); | |
10837 | TRACE_AND_STEP(); | |
10838 | SET_FLAG(F_CF); | |
10839 | DECODE_CLEAR_SEGOVR(); | |
10840 | END_OF_INSTR(); | |
10841 | } | |
10842 | ||
10843 | /**************************************************************************** | |
10844 | REMARKS: | |
10845 | Handles opcode 0xfa | |
10846 | ****************************************************************************/ | |
10847 | static void x86emuOp_cli(u8 X86EMU_UNUSED(op1)) | |
10848 | { | |
10849 | /* clear interrupts. */ | |
10850 | START_OF_INSTR(); | |
10851 | DECODE_PRINTF("CLI\n"); | |
10852 | TRACE_AND_STEP(); | |
10853 | CLEAR_FLAG(F_IF); | |
10854 | DECODE_CLEAR_SEGOVR(); | |
10855 | END_OF_INSTR(); | |
10856 | } | |
10857 | ||
10858 | /**************************************************************************** | |
10859 | REMARKS: | |
10860 | Handles opcode 0xfb | |
10861 | ****************************************************************************/ | |
10862 | static void x86emuOp_sti(u8 X86EMU_UNUSED(op1)) | |
10863 | { | |
10864 | /* enable interrupts. */ | |
10865 | START_OF_INSTR(); | |
10866 | DECODE_PRINTF("STI\n"); | |
10867 | TRACE_AND_STEP(); | |
10868 | SET_FLAG(F_IF); | |
10869 | DECODE_CLEAR_SEGOVR(); | |
10870 | END_OF_INSTR(); | |
10871 | } | |
10872 | ||
10873 | /**************************************************************************** | |
10874 | REMARKS: | |
10875 | Handles opcode 0xfc | |
10876 | ****************************************************************************/ | |
10877 | static void x86emuOp_cld(u8 X86EMU_UNUSED(op1)) | |
10878 | { | |
10879 | /* clear interrupts. */ | |
10880 | START_OF_INSTR(); | |
10881 | DECODE_PRINTF("CLD\n"); | |
10882 | TRACE_AND_STEP(); | |
10883 | CLEAR_FLAG(F_DF); | |
10884 | DECODE_CLEAR_SEGOVR(); | |
10885 | END_OF_INSTR(); | |
10886 | } | |
10887 | ||
10888 | /**************************************************************************** | |
10889 | REMARKS: | |
10890 | Handles opcode 0xfd | |
10891 | ****************************************************************************/ | |
10892 | static void x86emuOp_std(u8 X86EMU_UNUSED(op1)) | |
10893 | { | |
10894 | /* clear interrupts. */ | |
10895 | START_OF_INSTR(); | |
10896 | DECODE_PRINTF("STD\n"); | |
10897 | TRACE_AND_STEP(); | |
10898 | SET_FLAG(F_DF); | |
10899 | DECODE_CLEAR_SEGOVR(); | |
10900 | END_OF_INSTR(); | |
10901 | } | |
10902 | ||
10903 | /**************************************************************************** | |
10904 | REMARKS: | |
10905 | Handles opcode 0xfe | |
10906 | ****************************************************************************/ | |
10907 | static void x86emuOp_opcFE_byte_RM(u8 X86EMU_UNUSED(op1)) | |
10908 | { | |
10909 | int mod, rh, rl; | |
10910 | u8 destval; | |
10911 | uint destoffset; | |
10912 | u8 *destreg; | |
10913 | ||
10914 | /* Yet another special case instruction. */ | |
10915 | START_OF_INSTR(); | |
10916 | FETCH_DECODE_MODRM(mod, rh, rl); | |
10917 | #ifdef DEBUG | |
10918 | if (DEBUG_DECODE()) { | |
10919 | /* XXX DECODE_PRINTF may be changed to something more | |
10920 | general, so that it is important to leave the strings | |
10921 | in the same format, even though the result is that the | |
10922 | above test is done twice. */ | |
10923 | ||
10924 | switch (rh) { | |
10925 | case 0: | |
10926 | DECODE_PRINTF("INC\t"); | |
10927 | break; | |
10928 | case 1: | |
10929 | DECODE_PRINTF("DEC\t"); | |
10930 | break; | |
10931 | case 2: | |
10932 | case 3: | |
10933 | case 4: | |
10934 | case 5: | |
10935 | case 6: | |
10936 | case 7: | |
10937 | DECODE_PRINTF2("ILLEGAL OP MAJOR OP 0xFE MINOR OP %x \n", mod); | |
10938 | HALT_SYS(); | |
10939 | break; | |
10940 | } | |
10941 | } | |
10942 | #endif | |
10943 | switch (mod) { | |
10944 | case 0: | |
10945 | DECODE_PRINTF("BYTE PTR "); | |
10946 | destoffset = decode_rm00_address(rl); | |
10947 | DECODE_PRINTF("\n"); | |
10948 | switch (rh) { | |
10949 | case 0: /* inc word ptr ... */ | |
10950 | destval = fetch_data_byte(destoffset); | |
10951 | TRACE_AND_STEP(); | |
10952 | destval = inc_byte(destval); | |
10953 | store_data_byte(destoffset, destval); | |
10954 | break; | |
10955 | case 1: /* dec word ptr ... */ | |
10956 | destval = fetch_data_byte(destoffset); | |
10957 | TRACE_AND_STEP(); | |
10958 | destval = dec_byte(destval); | |
10959 | store_data_byte(destoffset, destval); | |
10960 | break; | |
10961 | } | |
10962 | break; | |
10963 | case 1: | |
10964 | DECODE_PRINTF("BYTE PTR "); | |
10965 | destoffset = decode_rm01_address(rl); | |
10966 | DECODE_PRINTF("\n"); | |
10967 | switch (rh) { | |
10968 | case 0: | |
10969 | destval = fetch_data_byte(destoffset); | |
10970 | TRACE_AND_STEP(); | |
10971 | destval = inc_byte(destval); | |
10972 | store_data_byte(destoffset, destval); | |
10973 | break; | |
10974 | case 1: | |
10975 | destval = fetch_data_byte(destoffset); | |
10976 | TRACE_AND_STEP(); | |
10977 | destval = dec_byte(destval); | |
10978 | store_data_byte(destoffset, destval); | |
10979 | break; | |
10980 | } | |
10981 | break; | |
10982 | case 2: | |
10983 | DECODE_PRINTF("BYTE PTR "); | |
10984 | destoffset = decode_rm10_address(rl); | |
10985 | DECODE_PRINTF("\n"); | |
10986 | switch (rh) { | |
10987 | case 0: | |
10988 | destval = fetch_data_byte(destoffset); | |
10989 | TRACE_AND_STEP(); | |
10990 | destval = inc_byte(destval); | |
10991 | store_data_byte(destoffset, destval); | |
10992 | break; | |
10993 | case 1: | |
10994 | destval = fetch_data_byte(destoffset); | |
10995 | TRACE_AND_STEP(); | |
10996 | destval = dec_byte(destval); | |
10997 | store_data_byte(destoffset, destval); | |
10998 | break; | |
10999 | } | |
11000 | break; | |
11001 | case 3: | |
11002 | destreg = DECODE_RM_BYTE_REGISTER(rl); | |
11003 | DECODE_PRINTF("\n"); | |
11004 | switch (rh) { | |
11005 | case 0: | |
11006 | TRACE_AND_STEP(); | |
11007 | *destreg = inc_byte(*destreg); | |
11008 | break; | |
11009 | case 1: | |
11010 | TRACE_AND_STEP(); | |
11011 | *destreg = dec_byte(*destreg); | |
11012 | break; | |
11013 | } | |
11014 | break; | |
11015 | } | |
11016 | DECODE_CLEAR_SEGOVR(); | |
11017 | END_OF_INSTR(); | |
11018 | } | |
11019 | ||
11020 | /**************************************************************************** | |
11021 | REMARKS: | |
11022 | Handles opcode 0xff | |
11023 | ****************************************************************************/ | |
11024 | static void x86emuOp_opcFF_word_RM(u8 X86EMU_UNUSED(op1)) | |
11025 | { | |
11026 | int mod, rh, rl; | |
11027 | uint destoffset = 0; | |
11028 | u16 *destreg; | |
11029 | u16 destval,destval2; | |
11030 | ||
11031 | /* Yet another special case instruction. */ | |
11032 | START_OF_INSTR(); | |
11033 | FETCH_DECODE_MODRM(mod, rh, rl); | |
11034 | #ifdef DEBUG | |
11035 | if (DEBUG_DECODE()) { | |
11036 | /* XXX DECODE_PRINTF may be changed to something more | |
11037 | general, so that it is important to leave the strings | |
11038 | in the same format, even though the result is that the | |
11039 | above test is done twice. */ | |
11040 | ||
11041 | switch (rh) { | |
11042 | case 0: | |
11043 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
11044 | DECODE_PRINTF("INC\tDWORD PTR "); | |
11045 | } else { | |
11046 | DECODE_PRINTF("INC\tWORD PTR "); | |
11047 | } | |
11048 | break; | |
11049 | case 1: | |
11050 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
11051 | DECODE_PRINTF("DEC\tDWORD PTR "); | |
11052 | } else { | |
11053 | DECODE_PRINTF("DEC\tWORD PTR "); | |
11054 | } | |
11055 | break; | |
11056 | case 2: | |
11057 | DECODE_PRINTF("CALL\t"); | |
11058 | break; | |
11059 | case 3: | |
11060 | DECODE_PRINTF("CALL\tFAR "); | |
11061 | break; | |
11062 | case 4: | |
11063 | DECODE_PRINTF("JMP\t"); | |
11064 | break; | |
11065 | case 5: | |
11066 | DECODE_PRINTF("JMP\tFAR "); | |
11067 | break; | |
11068 | case 6: | |
11069 | DECODE_PRINTF("PUSH\t"); | |
11070 | break; | |
11071 | case 7: | |
11072 | DECODE_PRINTF("ILLEGAL DECODING OF OPCODE FF\t"); | |
11073 | HALT_SYS(); | |
11074 | break; | |
11075 | } | |
11076 | } | |
11077 | #endif | |
11078 | switch (mod) { | |
11079 | case 0: | |
11080 | destoffset = decode_rm00_address(rl); | |
11081 | DECODE_PRINTF("\n"); | |
11082 | switch (rh) { | |
11083 | case 0: /* inc word ptr ... */ | |
11084 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
11085 | u32 destval; | |
11086 | ||
11087 | destval = fetch_data_long(destoffset); | |
11088 | TRACE_AND_STEP(); | |
11089 | destval = inc_long(destval); | |
11090 | store_data_long(destoffset, destval); | |
11091 | } else { | |
11092 | u16 destval; | |
11093 | ||
11094 | destval = fetch_data_word(destoffset); | |
11095 | TRACE_AND_STEP(); | |
11096 | destval = inc_word(destval); | |
11097 | store_data_word(destoffset, destval); | |
11098 | } | |
11099 | break; | |
11100 | case 1: /* dec word ptr ... */ | |
11101 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
11102 | u32 destval; | |
11103 | ||
11104 | destval = fetch_data_long(destoffset); | |
11105 | TRACE_AND_STEP(); | |
11106 | destval = dec_long(destval); | |
11107 | store_data_long(destoffset, destval); | |
11108 | } else { | |
11109 | u16 destval; | |
11110 | ||
11111 | destval = fetch_data_word(destoffset); | |
11112 | TRACE_AND_STEP(); | |
11113 | destval = dec_word(destval); | |
11114 | store_data_word(destoffset, destval); | |
11115 | } | |
11116 | break; | |
11117 | case 2: /* call word ptr ... */ | |
11118 | destval = fetch_data_word(destoffset); | |
11119 | TRACE_AND_STEP(); | |
11120 | push_word(M.x86.R_IP); | |
11121 | M.x86.R_IP = destval; | |
11122 | break; | |
11123 | case 3: /* call far ptr ... */ | |
11124 | destval = fetch_data_word(destoffset); | |
11125 | destval2 = fetch_data_word(destoffset + 2); | |
11126 | TRACE_AND_STEP(); | |
11127 | push_word(M.x86.R_CS); | |
11128 | M.x86.R_CS = destval2; | |
11129 | push_word(M.x86.R_IP); | |
11130 | M.x86.R_IP = destval; | |
11131 | break; | |
11132 | case 4: /* jmp word ptr ... */ | |
11133 | destval = fetch_data_word(destoffset); | |
11134 | TRACE_AND_STEP(); | |
11135 | M.x86.R_IP = destval; | |
11136 | break; | |
11137 | case 5: /* jmp far ptr ... */ | |
11138 | destval = fetch_data_word(destoffset); | |
11139 | destval2 = fetch_data_word(destoffset + 2); | |
11140 | TRACE_AND_STEP(); | |
11141 | M.x86.R_IP = destval; | |
11142 | M.x86.R_CS = destval2; | |
11143 | break; | |
11144 | case 6: /* push word ptr ... */ | |
11145 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
11146 | u32 destval; | |
11147 | ||
11148 | destval = fetch_data_long(destoffset); | |
11149 | TRACE_AND_STEP(); | |
11150 | push_long(destval); | |
11151 | } else { | |
11152 | u16 destval; | |
11153 | ||
11154 | destval = fetch_data_word(destoffset); | |
11155 | TRACE_AND_STEP(); | |
11156 | push_word(destval); | |
11157 | } | |
11158 | break; | |
11159 | } | |
11160 | break; | |
11161 | case 1: | |
11162 | destoffset = decode_rm01_address(rl); | |
11163 | DECODE_PRINTF("\n"); | |
11164 | switch (rh) { | |
11165 | case 0: | |
11166 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
11167 | u32 destval; | |
11168 | ||
11169 | destval = fetch_data_long(destoffset); | |
11170 | TRACE_AND_STEP(); | |
11171 | destval = inc_long(destval); | |
11172 | store_data_long(destoffset, destval); | |
11173 | } else { | |
11174 | u16 destval; | |
11175 | ||
11176 | destval = fetch_data_word(destoffset); | |
11177 | TRACE_AND_STEP(); | |
11178 | destval = inc_word(destval); | |
11179 | store_data_word(destoffset, destval); | |
11180 | } | |
11181 | break; | |
11182 | case 1: | |
11183 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
11184 | u32 destval; | |
11185 | ||
11186 | destval = fetch_data_long(destoffset); | |
11187 | TRACE_AND_STEP(); | |
11188 | destval = dec_long(destval); | |
11189 | store_data_long(destoffset, destval); | |
11190 | } else { | |
11191 | u16 destval; | |
11192 | ||
11193 | destval = fetch_data_word(destoffset); | |
11194 | TRACE_AND_STEP(); | |
11195 | destval = dec_word(destval); | |
11196 | store_data_word(destoffset, destval); | |
11197 | } | |
11198 | break; | |
11199 | case 2: /* call word ptr ... */ | |
11200 | destval = fetch_data_word(destoffset); | |
11201 | TRACE_AND_STEP(); | |
11202 | push_word(M.x86.R_IP); | |
11203 | M.x86.R_IP = destval; | |
11204 | break; | |
11205 | case 3: /* call far ptr ... */ | |
11206 | destval = fetch_data_word(destoffset); | |
11207 | destval2 = fetch_data_word(destoffset + 2); | |
11208 | TRACE_AND_STEP(); | |
11209 | push_word(M.x86.R_CS); | |
11210 | M.x86.R_CS = destval2; | |
11211 | push_word(M.x86.R_IP); | |
11212 | M.x86.R_IP = destval; | |
11213 | break; | |
11214 | case 4: /* jmp word ptr ... */ | |
11215 | destval = fetch_data_word(destoffset); | |
11216 | TRACE_AND_STEP(); | |
11217 | M.x86.R_IP = destval; | |
11218 | break; | |
11219 | case 5: /* jmp far ptr ... */ | |
11220 | destval = fetch_data_word(destoffset); | |
11221 | destval2 = fetch_data_word(destoffset + 2); | |
11222 | TRACE_AND_STEP(); | |
11223 | M.x86.R_IP = destval; | |
11224 | M.x86.R_CS = destval2; | |
11225 | break; | |
11226 | case 6: /* push word ptr ... */ | |
11227 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
11228 | u32 destval; | |
11229 | ||
11230 | destval = fetch_data_long(destoffset); | |
11231 | TRACE_AND_STEP(); | |
11232 | push_long(destval); | |
11233 | } else { | |
11234 | u16 destval; | |
11235 | ||
11236 | destval = fetch_data_word(destoffset); | |
11237 | TRACE_AND_STEP(); | |
11238 | push_word(destval); | |
11239 | } | |
11240 | break; | |
11241 | } | |
11242 | break; | |
11243 | case 2: | |
11244 | destoffset = decode_rm10_address(rl); | |
11245 | DECODE_PRINTF("\n"); | |
11246 | switch (rh) { | |
11247 | case 0: | |
11248 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
11249 | u32 destval; | |
11250 | ||
11251 | destval = fetch_data_long(destoffset); | |
11252 | TRACE_AND_STEP(); | |
11253 | destval = inc_long(destval); | |
11254 | store_data_long(destoffset, destval); | |
11255 | } else { | |
11256 | u16 destval; | |
11257 | ||
11258 | destval = fetch_data_word(destoffset); | |
11259 | TRACE_AND_STEP(); | |
11260 | destval = inc_word(destval); | |
11261 | store_data_word(destoffset, destval); | |
11262 | } | |
11263 | break; | |
11264 | case 1: | |
11265 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
11266 | u32 destval; | |
11267 | ||
11268 | destval = fetch_data_long(destoffset); | |
11269 | TRACE_AND_STEP(); | |
11270 | destval = dec_long(destval); | |
11271 | store_data_long(destoffset, destval); | |
11272 | } else { | |
11273 | u16 destval; | |
11274 | ||
11275 | destval = fetch_data_word(destoffset); | |
11276 | TRACE_AND_STEP(); | |
11277 | destval = dec_word(destval); | |
11278 | store_data_word(destoffset, destval); | |
11279 | } | |
11280 | break; | |
11281 | case 2: /* call word ptr ... */ | |
11282 | destval = fetch_data_word(destoffset); | |
11283 | TRACE_AND_STEP(); | |
11284 | push_word(M.x86.R_IP); | |
11285 | M.x86.R_IP = destval; | |
11286 | break; | |
11287 | case 3: /* call far ptr ... */ | |
11288 | destval = fetch_data_word(destoffset); | |
11289 | destval2 = fetch_data_word(destoffset + 2); | |
11290 | TRACE_AND_STEP(); | |
11291 | push_word(M.x86.R_CS); | |
11292 | M.x86.R_CS = destval2; | |
11293 | push_word(M.x86.R_IP); | |
11294 | M.x86.R_IP = destval; | |
11295 | break; | |
11296 | case 4: /* jmp word ptr ... */ | |
11297 | destval = fetch_data_word(destoffset); | |
11298 | TRACE_AND_STEP(); | |
11299 | M.x86.R_IP = destval; | |
11300 | break; | |
11301 | case 5: /* jmp far ptr ... */ | |
11302 | destval = fetch_data_word(destoffset); | |
11303 | destval2 = fetch_data_word(destoffset + 2); | |
11304 | TRACE_AND_STEP(); | |
11305 | M.x86.R_IP = destval; | |
11306 | M.x86.R_CS = destval2; | |
11307 | break; | |
11308 | case 6: /* push word ptr ... */ | |
11309 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
11310 | u32 destval; | |
11311 | ||
11312 | destval = fetch_data_long(destoffset); | |
11313 | TRACE_AND_STEP(); | |
11314 | push_long(destval); | |
11315 | } else { | |
11316 | u16 destval; | |
11317 | ||
11318 | destval = fetch_data_word(destoffset); | |
11319 | TRACE_AND_STEP(); | |
11320 | push_word(destval); | |
11321 | } | |
11322 | break; | |
11323 | } | |
11324 | break; | |
11325 | case 3: | |
11326 | switch (rh) { | |
11327 | case 0: | |
11328 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
11329 | u32 *destreg; | |
11330 | ||
11331 | destreg = DECODE_RM_LONG_REGISTER(rl); | |
11332 | DECODE_PRINTF("\n"); | |
11333 | TRACE_AND_STEP(); | |
11334 | *destreg = inc_long(*destreg); | |
11335 | } else { | |
11336 | u16 *destreg; | |
11337 | ||
11338 | destreg = DECODE_RM_WORD_REGISTER(rl); | |
11339 | DECODE_PRINTF("\n"); | |
11340 | TRACE_AND_STEP(); | |
11341 | *destreg = inc_word(*destreg); | |
11342 | } | |
11343 | break; | |
11344 | case 1: | |
11345 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
11346 | u32 *destreg; | |
11347 | ||
11348 | destreg = DECODE_RM_LONG_REGISTER(rl); | |
11349 | DECODE_PRINTF("\n"); | |
11350 | TRACE_AND_STEP(); | |
11351 | *destreg = dec_long(*destreg); | |
11352 | } else { | |
11353 | u16 *destreg; | |
11354 | ||
11355 | destreg = DECODE_RM_WORD_REGISTER(rl); | |
11356 | DECODE_PRINTF("\n"); | |
11357 | TRACE_AND_STEP(); | |
11358 | *destreg = dec_word(*destreg); | |
11359 | } | |
11360 | break; | |
11361 | case 2: /* call word ptr ... */ | |
11362 | destreg = DECODE_RM_WORD_REGISTER(rl); | |
11363 | DECODE_PRINTF("\n"); | |
11364 | TRACE_AND_STEP(); | |
11365 | push_word(M.x86.R_IP); | |
11366 | M.x86.R_IP = *destreg; | |
11367 | break; | |
11368 | case 3: /* jmp far ptr ... */ | |
11369 | DECODE_PRINTF("OPERATION UNDEFINED 0XFF \n"); | |
11370 | TRACE_AND_STEP(); | |
11371 | HALT_SYS(); | |
11372 | break; | |
11373 | ||
11374 | case 4: /* jmp ... */ | |
11375 | destreg = DECODE_RM_WORD_REGISTER(rl); | |
11376 | DECODE_PRINTF("\n"); | |
11377 | TRACE_AND_STEP(); | |
11378 | M.x86.R_IP = (u16) (*destreg); | |
11379 | break; | |
11380 | case 5: /* jmp far ptr ... */ | |
11381 | DECODE_PRINTF("OPERATION UNDEFINED 0XFF \n"); | |
11382 | TRACE_AND_STEP(); | |
11383 | HALT_SYS(); | |
11384 | break; | |
11385 | case 6: | |
11386 | if (M.x86.mode & SYSMODE_PREFIX_DATA) { | |
11387 | u32 *destreg; | |
11388 | ||
11389 | destreg = DECODE_RM_LONG_REGISTER(rl); | |
11390 | DECODE_PRINTF("\n"); | |
11391 | TRACE_AND_STEP(); | |
11392 | push_long(*destreg); | |
11393 | } else { | |
11394 | u16 *destreg; | |
11395 | ||
11396 | destreg = DECODE_RM_WORD_REGISTER(rl); | |
11397 | DECODE_PRINTF("\n"); | |
11398 | TRACE_AND_STEP(); | |
11399 | push_word(*destreg); | |
11400 | } | |
11401 | break; | |
11402 | } | |
11403 | break; | |
11404 | } | |
11405 | DECODE_CLEAR_SEGOVR(); | |
11406 | END_OF_INSTR(); | |
11407 | } | |
11408 | ||
11409 | /*************************************************************************** | |
11410 | * Single byte operation code table: | |
11411 | **************************************************************************/ | |
11412 | void (*x86emu_optab[256])(u8) = | |
11413 | { | |
11414 | /* 0x00 */ x86emuOp_add_byte_RM_R, | |
11415 | /* 0x01 */ x86emuOp_add_word_RM_R, | |
11416 | /* 0x02 */ x86emuOp_add_byte_R_RM, | |
11417 | /* 0x03 */ x86emuOp_add_word_R_RM, | |
11418 | /* 0x04 */ x86emuOp_add_byte_AL_IMM, | |
11419 | /* 0x05 */ x86emuOp_add_word_AX_IMM, | |
11420 | /* 0x06 */ x86emuOp_push_ES, | |
11421 | /* 0x07 */ x86emuOp_pop_ES, | |
11422 | ||
11423 | /* 0x08 */ x86emuOp_or_byte_RM_R, | |
11424 | /* 0x09 */ x86emuOp_or_word_RM_R, | |
11425 | /* 0x0a */ x86emuOp_or_byte_R_RM, | |
11426 | /* 0x0b */ x86emuOp_or_word_R_RM, | |
11427 | /* 0x0c */ x86emuOp_or_byte_AL_IMM, | |
11428 | /* 0x0d */ x86emuOp_or_word_AX_IMM, | |
11429 | /* 0x0e */ x86emuOp_push_CS, | |
11430 | /* 0x0f */ x86emuOp_two_byte, | |
11431 | ||
11432 | /* 0x10 */ x86emuOp_adc_byte_RM_R, | |
11433 | /* 0x11 */ x86emuOp_adc_word_RM_R, | |
11434 | /* 0x12 */ x86emuOp_adc_byte_R_RM, | |
11435 | /* 0x13 */ x86emuOp_adc_word_R_RM, | |
11436 | /* 0x14 */ x86emuOp_adc_byte_AL_IMM, | |
11437 | /* 0x15 */ x86emuOp_adc_word_AX_IMM, | |
11438 | /* 0x16 */ x86emuOp_push_SS, | |
11439 | /* 0x17 */ x86emuOp_pop_SS, | |
11440 | ||
11441 | /* 0x18 */ x86emuOp_sbb_byte_RM_R, | |
11442 | /* 0x19 */ x86emuOp_sbb_word_RM_R, | |
11443 | /* 0x1a */ x86emuOp_sbb_byte_R_RM, | |
11444 | /* 0x1b */ x86emuOp_sbb_word_R_RM, | |
11445 | /* 0x1c */ x86emuOp_sbb_byte_AL_IMM, | |
11446 | /* 0x1d */ x86emuOp_sbb_word_AX_IMM, | |
11447 | /* 0x1e */ x86emuOp_push_DS, | |
11448 | /* 0x1f */ x86emuOp_pop_DS, | |
11449 | ||
11450 | /* 0x20 */ x86emuOp_and_byte_RM_R, | |
11451 | /* 0x21 */ x86emuOp_and_word_RM_R, | |
11452 | /* 0x22 */ x86emuOp_and_byte_R_RM, | |
11453 | /* 0x23 */ x86emuOp_and_word_R_RM, | |
11454 | /* 0x24 */ x86emuOp_and_byte_AL_IMM, | |
11455 | /* 0x25 */ x86emuOp_and_word_AX_IMM, | |
11456 | /* 0x26 */ x86emuOp_segovr_ES, | |
11457 | /* 0x27 */ x86emuOp_daa, | |
11458 | ||
11459 | /* 0x28 */ x86emuOp_sub_byte_RM_R, | |
11460 | /* 0x29 */ x86emuOp_sub_word_RM_R, | |
11461 | /* 0x2a */ x86emuOp_sub_byte_R_RM, | |
11462 | /* 0x2b */ x86emuOp_sub_word_R_RM, | |
11463 | /* 0x2c */ x86emuOp_sub_byte_AL_IMM, | |
11464 | /* 0x2d */ x86emuOp_sub_word_AX_IMM, | |
11465 | /* 0x2e */ x86emuOp_segovr_CS, | |
11466 | /* 0x2f */ x86emuOp_das, | |
11467 | ||
11468 | /* 0x30 */ x86emuOp_xor_byte_RM_R, | |
11469 | /* 0x31 */ x86emuOp_xor_word_RM_R, | |
11470 | /* 0x32 */ x86emuOp_xor_byte_R_RM, | |
11471 | /* 0x33 */ x86emuOp_xor_word_R_RM, | |
11472 | /* 0x34 */ x86emuOp_xor_byte_AL_IMM, | |
11473 | /* 0x35 */ x86emuOp_xor_word_AX_IMM, | |
11474 | /* 0x36 */ x86emuOp_segovr_SS, | |
11475 | /* 0x37 */ x86emuOp_aaa, | |
11476 | ||
11477 | /* 0x38 */ x86emuOp_cmp_byte_RM_R, | |
11478 | /* 0x39 */ x86emuOp_cmp_word_RM_R, | |
11479 | /* 0x3a */ x86emuOp_cmp_byte_R_RM, | |
11480 | /* 0x3b */ x86emuOp_cmp_word_R_RM, | |
11481 | /* 0x3c */ x86emuOp_cmp_byte_AL_IMM, | |
11482 | /* 0x3d */ x86emuOp_cmp_word_AX_IMM, | |
11483 | /* 0x3e */ x86emuOp_segovr_DS, | |
11484 | /* 0x3f */ x86emuOp_aas, | |
11485 | ||
11486 | /* 0x40 */ x86emuOp_inc_AX, | |
11487 | /* 0x41 */ x86emuOp_inc_CX, | |
11488 | /* 0x42 */ x86emuOp_inc_DX, | |
11489 | /* 0x43 */ x86emuOp_inc_BX, | |
11490 | /* 0x44 */ x86emuOp_inc_SP, | |
11491 | /* 0x45 */ x86emuOp_inc_BP, | |
11492 | /* 0x46 */ x86emuOp_inc_SI, | |
11493 | /* 0x47 */ x86emuOp_inc_DI, | |
11494 | ||
11495 | /* 0x48 */ x86emuOp_dec_AX, | |
11496 | /* 0x49 */ x86emuOp_dec_CX, | |
11497 | /* 0x4a */ x86emuOp_dec_DX, | |
11498 | /* 0x4b */ x86emuOp_dec_BX, | |
11499 | /* 0x4c */ x86emuOp_dec_SP, | |
11500 | /* 0x4d */ x86emuOp_dec_BP, | |
11501 | /* 0x4e */ x86emuOp_dec_SI, | |
11502 | /* 0x4f */ x86emuOp_dec_DI, | |
11503 | ||
11504 | /* 0x50 */ x86emuOp_push_AX, | |
11505 | /* 0x51 */ x86emuOp_push_CX, | |
11506 | /* 0x52 */ x86emuOp_push_DX, | |
11507 | /* 0x53 */ x86emuOp_push_BX, | |
11508 | /* 0x54 */ x86emuOp_push_SP, | |
11509 | /* 0x55 */ x86emuOp_push_BP, | |
11510 | /* 0x56 */ x86emuOp_push_SI, | |
11511 | /* 0x57 */ x86emuOp_push_DI, | |
11512 | ||
11513 | /* 0x58 */ x86emuOp_pop_AX, | |
11514 | /* 0x59 */ x86emuOp_pop_CX, | |
11515 | /* 0x5a */ x86emuOp_pop_DX, | |
11516 | /* 0x5b */ x86emuOp_pop_BX, | |
11517 | /* 0x5c */ x86emuOp_pop_SP, | |
11518 | /* 0x5d */ x86emuOp_pop_BP, | |
11519 | /* 0x5e */ x86emuOp_pop_SI, | |
11520 | /* 0x5f */ x86emuOp_pop_DI, | |
11521 | ||
11522 | /* 0x60 */ x86emuOp_push_all, | |
11523 | /* 0x61 */ x86emuOp_pop_all, | |
11524 | /* 0x62 */ x86emuOp_illegal_op, /* bound */ | |
11525 | /* 0x63 */ x86emuOp_illegal_op, /* arpl */ | |
11526 | /* 0x64 */ x86emuOp_segovr_FS, | |
11527 | /* 0x65 */ x86emuOp_segovr_GS, | |
11528 | /* 0x66 */ x86emuOp_prefix_data, | |
11529 | /* 0x67 */ x86emuOp_prefix_addr, | |
11530 | ||
11531 | /* 0x68 */ x86emuOp_push_word_IMM, | |
11532 | /* 0x69 */ x86emuOp_imul_word_IMM, | |
11533 | /* 0x6a */ x86emuOp_push_byte_IMM, | |
11534 | /* 0x6b */ x86emuOp_imul_byte_IMM, | |
11535 | /* 0x6c */ x86emuOp_ins_byte, | |
11536 | /* 0x6d */ x86emuOp_ins_word, | |
11537 | /* 0x6e */ x86emuOp_outs_byte, | |
11538 | /* 0x6f */ x86emuOp_outs_word, | |
11539 | ||
11540 | /* 0x70 */ x86emuOp_jump_near_O, | |
11541 | /* 0x71 */ x86emuOp_jump_near_NO, | |
11542 | /* 0x72 */ x86emuOp_jump_near_B, | |
11543 | /* 0x73 */ x86emuOp_jump_near_NB, | |
11544 | /* 0x74 */ x86emuOp_jump_near_Z, | |
11545 | /* 0x75 */ x86emuOp_jump_near_NZ, | |
11546 | /* 0x76 */ x86emuOp_jump_near_BE, | |
11547 | /* 0x77 */ x86emuOp_jump_near_NBE, | |
11548 | ||
11549 | /* 0x78 */ x86emuOp_jump_near_S, | |
11550 | /* 0x79 */ x86emuOp_jump_near_NS, | |
11551 | /* 0x7a */ x86emuOp_jump_near_P, | |
11552 | /* 0x7b */ x86emuOp_jump_near_NP, | |
11553 | /* 0x7c */ x86emuOp_jump_near_L, | |
11554 | /* 0x7d */ x86emuOp_jump_near_NL, | |
11555 | /* 0x7e */ x86emuOp_jump_near_LE, | |
11556 | /* 0x7f */ x86emuOp_jump_near_NLE, | |
11557 | ||
11558 | /* 0x80 */ x86emuOp_opc80_byte_RM_IMM, | |
11559 | /* 0x81 */ x86emuOp_opc81_word_RM_IMM, | |
11560 | /* 0x82 */ x86emuOp_opc82_byte_RM_IMM, | |
11561 | /* 0x83 */ x86emuOp_opc83_word_RM_IMM, | |
11562 | /* 0x84 */ x86emuOp_test_byte_RM_R, | |
11563 | /* 0x85 */ x86emuOp_test_word_RM_R, | |
11564 | /* 0x86 */ x86emuOp_xchg_byte_RM_R, | |
11565 | /* 0x87 */ x86emuOp_xchg_word_RM_R, | |
11566 | ||
11567 | /* 0x88 */ x86emuOp_mov_byte_RM_R, | |
11568 | /* 0x89 */ x86emuOp_mov_word_RM_R, | |
11569 | /* 0x8a */ x86emuOp_mov_byte_R_RM, | |
11570 | /* 0x8b */ x86emuOp_mov_word_R_RM, | |
11571 | /* 0x8c */ x86emuOp_mov_word_RM_SR, | |
11572 | /* 0x8d */ x86emuOp_lea_word_R_M, | |
11573 | /* 0x8e */ x86emuOp_mov_word_SR_RM, | |
11574 | /* 0x8f */ x86emuOp_pop_RM, | |
11575 | ||
11576 | /* 0x90 */ x86emuOp_nop, | |
11577 | /* 0x91 */ x86emuOp_xchg_word_AX_CX, | |
11578 | /* 0x92 */ x86emuOp_xchg_word_AX_DX, | |
11579 | /* 0x93 */ x86emuOp_xchg_word_AX_BX, | |
11580 | /* 0x94 */ x86emuOp_xchg_word_AX_SP, | |
11581 | /* 0x95 */ x86emuOp_xchg_word_AX_BP, | |
11582 | /* 0x96 */ x86emuOp_xchg_word_AX_SI, | |
11583 | /* 0x97 */ x86emuOp_xchg_word_AX_DI, | |
11584 | ||
11585 | /* 0x98 */ x86emuOp_cbw, | |
11586 | /* 0x99 */ x86emuOp_cwd, | |
11587 | /* 0x9a */ x86emuOp_call_far_IMM, | |
11588 | /* 0x9b */ x86emuOp_wait, | |
11589 | /* 0x9c */ x86emuOp_pushf_word, | |
11590 | /* 0x9d */ x86emuOp_popf_word, | |
11591 | /* 0x9e */ x86emuOp_sahf, | |
11592 | /* 0x9f */ x86emuOp_lahf, | |
11593 | ||
11594 | /* 0xa0 */ x86emuOp_mov_AL_M_IMM, | |
11595 | /* 0xa1 */ x86emuOp_mov_AX_M_IMM, | |
11596 | /* 0xa2 */ x86emuOp_mov_M_AL_IMM, | |
11597 | /* 0xa3 */ x86emuOp_mov_M_AX_IMM, | |
11598 | /* 0xa4 */ x86emuOp_movs_byte, | |
11599 | /* 0xa5 */ x86emuOp_movs_word, | |
11600 | /* 0xa6 */ x86emuOp_cmps_byte, | |
11601 | /* 0xa7 */ x86emuOp_cmps_word, | |
11602 | /* 0xa8 */ x86emuOp_test_AL_IMM, | |
11603 | /* 0xa9 */ x86emuOp_test_AX_IMM, | |
11604 | /* 0xaa */ x86emuOp_stos_byte, | |
11605 | /* 0xab */ x86emuOp_stos_word, | |
11606 | /* 0xac */ x86emuOp_lods_byte, | |
11607 | /* 0xad */ x86emuOp_lods_word, | |
11608 | /* 0xac */ x86emuOp_scas_byte, | |
11609 | /* 0xad */ x86emuOp_scas_word, | |
11610 | ||
11611 | ||
11612 | /* 0xb0 */ x86emuOp_mov_byte_AL_IMM, | |
11613 | /* 0xb1 */ x86emuOp_mov_byte_CL_IMM, | |
11614 | /* 0xb2 */ x86emuOp_mov_byte_DL_IMM, | |
11615 | /* 0xb3 */ x86emuOp_mov_byte_BL_IMM, | |
11616 | /* 0xb4 */ x86emuOp_mov_byte_AH_IMM, | |
11617 | /* 0xb5 */ x86emuOp_mov_byte_CH_IMM, | |
11618 | /* 0xb6 */ x86emuOp_mov_byte_DH_IMM, | |
11619 | /* 0xb7 */ x86emuOp_mov_byte_BH_IMM, | |
11620 | ||
11621 | /* 0xb8 */ x86emuOp_mov_word_AX_IMM, | |
11622 | /* 0xb9 */ x86emuOp_mov_word_CX_IMM, | |
11623 | /* 0xba */ x86emuOp_mov_word_DX_IMM, | |
11624 | /* 0xbb */ x86emuOp_mov_word_BX_IMM, | |
11625 | /* 0xbc */ x86emuOp_mov_word_SP_IMM, | |
11626 | /* 0xbd */ x86emuOp_mov_word_BP_IMM, | |
11627 | /* 0xbe */ x86emuOp_mov_word_SI_IMM, | |
11628 | /* 0xbf */ x86emuOp_mov_word_DI_IMM, | |
11629 | ||
11630 | /* 0xc0 */ x86emuOp_opcC0_byte_RM_MEM, | |
11631 | /* 0xc1 */ x86emuOp_opcC1_word_RM_MEM, | |
11632 | /* 0xc2 */ x86emuOp_ret_near_IMM, | |
11633 | /* 0xc3 */ x86emuOp_ret_near, | |
11634 | /* 0xc4 */ x86emuOp_les_R_IMM, | |
11635 | /* 0xc5 */ x86emuOp_lds_R_IMM, | |
11636 | /* 0xc6 */ x86emuOp_mov_byte_RM_IMM, | |
11637 | /* 0xc7 */ x86emuOp_mov_word_RM_IMM, | |
11638 | /* 0xc8 */ x86emuOp_enter, | |
11639 | /* 0xc9 */ x86emuOp_leave, | |
11640 | /* 0xca */ x86emuOp_ret_far_IMM, | |
11641 | /* 0xcb */ x86emuOp_ret_far, | |
11642 | /* 0xcc */ x86emuOp_int3, | |
11643 | /* 0xcd */ x86emuOp_int_IMM, | |
11644 | /* 0xce */ x86emuOp_into, | |
11645 | /* 0xcf */ x86emuOp_iret, | |
11646 | ||
11647 | /* 0xd0 */ x86emuOp_opcD0_byte_RM_1, | |
11648 | /* 0xd1 */ x86emuOp_opcD1_word_RM_1, | |
11649 | /* 0xd2 */ x86emuOp_opcD2_byte_RM_CL, | |
11650 | /* 0xd3 */ x86emuOp_opcD3_word_RM_CL, | |
11651 | /* 0xd4 */ x86emuOp_aam, | |
11652 | /* 0xd5 */ x86emuOp_aad, | |
11653 | /* 0xd6 */ x86emuOp_illegal_op, /* Undocumented SETALC instruction */ | |
11654 | /* 0xd7 */ x86emuOp_xlat, | |
11655 | /* 0xd8 */ x86emuOp_esc_coprocess_d8, | |
11656 | /* 0xd9 */ x86emuOp_esc_coprocess_d9, | |
11657 | /* 0xda */ x86emuOp_esc_coprocess_da, | |
11658 | /* 0xdb */ x86emuOp_esc_coprocess_db, | |
11659 | /* 0xdc */ x86emuOp_esc_coprocess_dc, | |
11660 | /* 0xdd */ x86emuOp_esc_coprocess_dd, | |
11661 | /* 0xde */ x86emuOp_esc_coprocess_de, | |
11662 | /* 0xdf */ x86emuOp_esc_coprocess_df, | |
11663 | ||
11664 | /* 0xe0 */ x86emuOp_loopne, | |
11665 | /* 0xe1 */ x86emuOp_loope, | |
11666 | /* 0xe2 */ x86emuOp_loop, | |
11667 | /* 0xe3 */ x86emuOp_jcxz, | |
11668 | /* 0xe4 */ x86emuOp_in_byte_AL_IMM, | |
11669 | /* 0xe5 */ x86emuOp_in_word_AX_IMM, | |
11670 | /* 0xe6 */ x86emuOp_out_byte_IMM_AL, | |
11671 | /* 0xe7 */ x86emuOp_out_word_IMM_AX, | |
11672 | ||
11673 | /* 0xe8 */ x86emuOp_call_near_IMM, | |
11674 | /* 0xe9 */ x86emuOp_jump_near_IMM, | |
11675 | /* 0xea */ x86emuOp_jump_far_IMM, | |
11676 | /* 0xeb */ x86emuOp_jump_byte_IMM, | |
11677 | /* 0xec */ x86emuOp_in_byte_AL_DX, | |
11678 | /* 0xed */ x86emuOp_in_word_AX_DX, | |
11679 | /* 0xee */ x86emuOp_out_byte_DX_AL, | |
11680 | /* 0xef */ x86emuOp_out_word_DX_AX, | |
11681 | ||
11682 | /* 0xf0 */ x86emuOp_lock, | |
11683 | /* 0xf1 */ x86emuOp_illegal_op, | |
11684 | /* 0xf2 */ x86emuOp_repne, | |
11685 | /* 0xf3 */ x86emuOp_repe, | |
11686 | /* 0xf4 */ x86emuOp_halt, | |
11687 | /* 0xf5 */ x86emuOp_cmc, | |
11688 | /* 0xf6 */ x86emuOp_opcF6_byte_RM, | |
11689 | /* 0xf7 */ x86emuOp_opcF7_word_RM, | |
11690 | ||
11691 | /* 0xf8 */ x86emuOp_clc, | |
11692 | /* 0xf9 */ x86emuOp_stc, | |
11693 | /* 0xfa */ x86emuOp_cli, | |
11694 | /* 0xfb */ x86emuOp_sti, | |
11695 | /* 0xfc */ x86emuOp_cld, | |
11696 | /* 0xfd */ x86emuOp_std, | |
11697 | /* 0xfe */ x86emuOp_opcFE_byte_RM, | |
11698 | /* 0xff */ x86emuOp_opcFF_word_RM, | |
11699 | }; |