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196ba1fc PH |
1 | /*\r |
2 | * Dos/PC Emulator\r | |
3 | * Copyright (C) 1991 Jim Hudgens\r | |
4 | *\r | |
5 | *\r | |
6 | * The file is part of GDE.\r | |
7 | *\r | |
8 | * GDE is free software; you can redistribute it and/or modify\r | |
9 | * it under the terms of the GNU General Public License as published by\r | |
10 | * the Free Software Foundation; either version 1, or (at your option)\r | |
11 | * any later version.\r | |
12 | *\r | |
13 | * GDE is distributed in the hope that it will be useful,\r | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of\r | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\r | |
16 | * GNU General Public License for more details.\r | |
17 | *\r | |
18 | * You should have received a copy of the GNU General Public License\r | |
19 | * along with GDE; see the file COPYING. If not, write to\r | |
20 | * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.\r | |
21 | *\r | |
22 | */\r | |
23 | \r | |
24 | #include "altairz80_defs.h"\r | |
25 | #include "i86.h"\r | |
26 | \r | |
27 | extern void out(const uint32 Port, const uint32 Value);\r | |
28 | extern uint32 in(const uint32 Port);\r | |
29 | \r | |
30 | /* $Log: i86_ops.c,v $\r | |
31 | * Revision 0.11 1991/07/30 02:02:04 hudgens\r | |
32 | * added copyright.\r | |
33 | *\r | |
34 | * Revision 0.10 1991/07/21 18:22:08 hudgens\r | |
35 | * Fixed problem with scans, which was the result of the loop break\r | |
36 | * condition being incorrect when used in conjunction with the repe\r | |
37 | * or repne prefixes. Eureka. pkzip/pkunzip now compress/decompress\r | |
38 | * correctly.\r | |
39 | *\r | |
40 | * Revision 0.9 1991/07/21 03:33:18 hudgens\r | |
41 | * fixed popf so that it appears to be the same as an 8088 popf, and always\r | |
42 | * sets the high 4 bits of the flags.\r | |
43 | *\r | |
44 | * Revision 0.8 1991/07/21 01:44:11 hudgens\r | |
45 | * fixed aad and aam instructions.\r | |
46 | *\r | |
47 | * Revision 0.7 1991/07/21 00:31:24 hudgens\r | |
48 | * Fixed iret so that it works correctly.\r | |
49 | *\r | |
50 | * Revision 0.6 1991/07/20 16:54:50 hudgens\r | |
51 | * removed the 8087 coprocessor operations. Moved to i87_ops.c\r | |
52 | *\r | |
53 | * Revision 0.5 1991/07/17 03:50:10 hudgens\r | |
54 | * Minor modifications.\r | |
55 | *\r | |
56 | * Revision 0.4 1991/06/18 02:48:41 hudgens\r | |
57 | * Fixed a problem with scasb and scasw.\r | |
58 | *\r | |
59 | * Revision 0.3 1991/06/03 01:01:10 hudgens\r | |
60 | * fixed minor problems due to unsigned to signed short integer\r | |
61 | * promotions.\r | |
62 | *\r | |
63 | * Revision 0.2 1991/03/31 01:32:10 hudgens\r | |
64 | * fixed segment handling. Added calls to DECODE_CLEAR_SEGOVR in\r | |
65 | * many places in the code. Should work much better now.\r | |
66 | *\r | |
67 | * Revision 0.1 1991/03/30 21:15:48 hudgens\r | |
68 | * Initial checkin to RCS.\r | |
69 | *\r | |
70 | *\r | |
71 | */\r | |
72 | \r | |
73 | /* 2/23/91 fixed decode for operand x87. */\r | |
74 | \r | |
75 | /* partially mechanically generated file....(based on the optable) */\r | |
76 | /*\r | |
77 | There are approximately 250 subroutines in here, which correspond\r | |
78 | to the 256 byte-"opcodes" found on the 8086. The table which\r | |
79 | dispatches this is found in the files optab.[ch].\r | |
80 | \r | |
81 | Each opcode proc has a comment preceeding it which gives it's table\r | |
82 | address. Several opcodes are missing (undefined) in the table.\r | |
83 | \r | |
84 | Each proc includes information for decoding (DECODE_PRINTF and\r | |
85 | and misc functions (\r | |
86 | Many of the procedures are *VERY* similar in coding. This has\r | |
87 | allowed for a very large amount of code to be generated in a fairly\r | |
88 | short amount of time (i.e. cut, paste, and modify).\r | |
89 | The result is that much of the code below could\r | |
90 | have been folded into subroutines for a large reduction in size of\r | |
91 | this file. The downside would be that there would be a penalty in\r | |
92 | execution speed. The file could also have been *MUCH* larger by\r | |
93 | inlining certain functions which were called. This could have\r | |
94 | resulted even faster execution. The prime directive I used to decide\r | |
95 | whether to inline the code or to modularize it, was basically: 1) no\r | |
96 | unnecessary subroutine calls, 2) no routines more than about 200 lines\r | |
97 | in size, and 3) modularize any code that I might not get right the first\r | |
98 | time. The fetch_* subroutines fall into the latter category. The\r | |
99 | The decode_* fall into the second category. The coding of the\r | |
100 | "switch(mod){ .... }" in many of the subroutines below falls into the\r | |
101 | first category. Especially, the coding of {add,and,or,sub,...}_{byte,word}\r | |
102 | subroutines are an especially glaring case of the third guideline.\r | |
103 | Since so much of the code is cloned from other modules (compare\r | |
104 | opcode #00 to opcode #01), making the basic operations subroutine calls\r | |
105 | is especially important; otherwise mistakes in coding an "add"\r | |
106 | would represent a nightmare in maintenance.\r | |
107 | \r | |
108 | So, without further ado, ...\r | |
109 | */\r | |
110 | \r | |
111 | extern char parity_tab[];\r | |
112 | \r | |
113 | static void i86op_illegal_op(PC_ENV *m)\r | |
114 | {\r | |
115 | intr |= INTR_ILLEGAL_OPCODE;\r | |
116 | }\r | |
117 | \r | |
118 | /*opcode=0x00*/\r | |
119 | static void i86op_add_byte_RM_R(PC_ENV *m)\r | |
120 | {\r | |
121 | uint16 mod,rl,rh;\r | |
122 | uint8 *destreg,*srcreg;\r | |
123 | uint16 destoffset;\r | |
124 | uint8 destval;\r | |
125 | FETCH_DECODE_MODRM(m,mod,rh,rl);\r | |
126 | switch (mod)\r | |
127 | {\r | |
128 | case 0:\r | |
129 | destoffset=decode_rm00_address(m,rl);\r | |
130 | destval = fetch_data_byte(m,destoffset);\r | |
131 | srcreg = DECODE_RM_BYTE_REGISTER(m,rh);\r | |
132 | destval = add_byte(m, destval, *srcreg);\r | |
133 | store_data_byte(m,destoffset,destval);\r | |
134 | break;\r | |
135 | case 1:\r | |
136 | destoffset=decode_rm01_address(m,rl);\r | |
137 | destval = fetch_data_byte(m,destoffset);\r | |
138 | srcreg = DECODE_RM_BYTE_REGISTER(m,rh);\r | |
139 | destval = add_byte(m, destval, *srcreg);\r | |
140 | store_data_byte(m,destoffset,destval);\r | |
141 | break;\r | |
142 | case 2:\r | |
143 | destoffset=decode_rm10_address(m,rl);\r | |
144 | destval = fetch_data_byte(m,destoffset);\r | |
145 | srcreg = DECODE_RM_BYTE_REGISTER(m,rh);\r | |
146 | destval = add_byte(m, destval, *srcreg);\r | |
147 | store_data_byte(m,destoffset,destval);\r | |
148 | break;\r | |
149 | case 3: /* register to register */\r | |
150 | destreg = DECODE_RM_BYTE_REGISTER(m,rl);\r | |
151 | srcreg = DECODE_RM_BYTE_REGISTER(m,rh);\r | |
152 | *destreg = add_byte(m, *destreg, *srcreg);\r | |
153 | break;\r | |
154 | }\r | |
155 | DECODE_CLEAR_SEGOVR(m);\r | |
156 | }\r | |
157 | \r | |
158 | /*opcode=0x01*/\r | |
159 | static void i86op_add_word_RM_R(PC_ENV *m)\r | |
160 | {\r | |
161 | uint16 mod,rl,rh;\r | |
162 | uint16 *destreg,*srcreg;\r | |
163 | uint16 destoffset;\r | |
164 | uint16 destval;\r | |
165 | FETCH_DECODE_MODRM(m,mod,rh,rl);\r | |
166 | switch (mod)\r | |
167 | {\r | |
168 | case 0:\r | |
169 | destoffset=decode_rm00_address(m,rl);\r | |
170 | destval = fetch_data_word(m,destoffset);\r | |
171 | srcreg = DECODE_RM_WORD_REGISTER(m,rh);\r | |
172 | destval = add_word(m, destval, *srcreg);\r | |
173 | store_data_word(m,destoffset,destval);\r | |
174 | break;\r | |
175 | case 1:\r | |
176 | destoffset=decode_rm01_address(m,rl);\r | |
177 | destval = fetch_data_word(m,destoffset);\r | |
178 | srcreg = DECODE_RM_WORD_REGISTER(m,rh);\r | |
179 | destval = add_word(m, destval, *srcreg);\r | |
180 | store_data_word(m,destoffset,destval);\r | |
181 | break;\r | |
182 | case 2:\r | |
183 | destoffset=decode_rm10_address(m,rl);\r | |
184 | destval = fetch_data_word(m,destoffset);\r | |
185 | srcreg = DECODE_RM_WORD_REGISTER(m,rh);\r | |
186 | destval = add_word(m, destval, *srcreg);\r | |
187 | store_data_word(m,destoffset,destval);\r | |
188 | break;\r | |
189 | case 3: /* register to register */\r | |
190 | destreg = DECODE_RM_WORD_REGISTER(m,rl);\r | |
191 | srcreg = DECODE_RM_WORD_REGISTER(m,rh);\r | |
192 | *destreg = add_word(m, *destreg, *srcreg);\r | |
193 | break;\r | |
194 | }\r | |
195 | DECODE_CLEAR_SEGOVR(m);\r | |
196 | }\r | |
197 | \r | |
198 | /*opcode=0x02*/\r | |
199 | static void i86op_add_byte_R_RM(PC_ENV *m)\r | |
200 | {\r | |
201 | uint16 mod,rl,rh;\r | |
202 | uint8 *destreg,*srcreg;\r | |
203 | uint16 srcoffset;\r | |
204 | uint8 srcval;\r | |
205 | FETCH_DECODE_MODRM(m,mod,rh,rl);\r | |
206 | switch (mod)\r | |
207 | {\r | |
208 | case 0:\r | |
209 | destreg = DECODE_RM_BYTE_REGISTER(m,rh);\r | |
210 | srcoffset=decode_rm00_address(m,rl);\r | |
211 | srcval = fetch_data_byte(m,srcoffset);\r | |
212 | *destreg = add_byte(m, *destreg, srcval);\r | |
213 | break;\r | |
214 | case 1:\r | |
215 | destreg = DECODE_RM_BYTE_REGISTER(m,rh);\r | |
216 | srcoffset=decode_rm01_address(m,rl);\r | |
217 | srcval = fetch_data_byte(m,srcoffset);\r | |
218 | *destreg = add_byte(m, *destreg, srcval);\r | |
219 | break;\r | |
220 | case 2:\r | |
221 | destreg = DECODE_RM_BYTE_REGISTER(m,rh);\r | |
222 | srcoffset=decode_rm10_address(m,rl);\r | |
223 | srcval = fetch_data_byte(m,srcoffset);\r | |
224 | *destreg = add_byte(m, * destreg, srcval);\r | |
225 | break;\r | |
226 | case 3: /* register to register */\r | |
227 | destreg = DECODE_RM_BYTE_REGISTER(m,rh);\r | |
228 | srcreg = DECODE_RM_BYTE_REGISTER(m,rl);\r | |
229 | *destreg = add_byte(m, *destreg, *srcreg);\r | |
230 | break;\r | |
231 | }\r | |
232 | DECODE_CLEAR_SEGOVR(m);\r | |
233 | }\r | |
234 | \r | |
235 | /*opcode=0x03*/\r | |
236 | static void i86op_add_word_R_RM(PC_ENV *m)\r | |
237 | {\r | |
238 | uint16 mod,rl,rh;\r | |
239 | uint16 *destreg,*srcreg;\r | |
240 | uint16 srcoffset;\r | |
241 | uint16 srcval;\r | |
242 | FETCH_DECODE_MODRM(m,mod,rh,rl);\r | |
243 | switch (mod)\r | |
244 | {\r | |
245 | case 0:\r | |
246 | destreg = DECODE_RM_WORD_REGISTER(m,rh);\r | |
247 | srcoffset=decode_rm00_address(m,rl);\r | |
248 | srcval = fetch_data_word(m,srcoffset);\r | |
249 | *destreg = add_word(m, *destreg, srcval);\r | |
250 | break;\r | |
251 | case 1:\r | |
252 | destreg = DECODE_RM_WORD_REGISTER(m,rh);\r | |
253 | srcoffset=decode_rm01_address(m,rl);\r | |
254 | srcval = fetch_data_word(m,srcoffset);\r | |
255 | *destreg = add_word(m, *destreg, srcval);\r | |
256 | break;\r | |
257 | case 2:\r | |
258 | destreg = DECODE_RM_WORD_REGISTER(m,rh);\r | |
259 | srcoffset=decode_rm10_address(m,rl);\r | |
260 | srcval = fetch_data_word(m,srcoffset);\r | |
261 | *destreg = add_word(m, *destreg, srcval);\r | |
262 | break;\r | |
263 | case 3: /* register to register */\r | |
264 | destreg = DECODE_RM_WORD_REGISTER(m,rh);\r | |
265 | srcreg = DECODE_RM_WORD_REGISTER(m,rl);\r | |
266 | *destreg = add_word(m, *destreg, *srcreg);\r | |
267 | break;\r | |
268 | }\r | |
269 | DECODE_CLEAR_SEGOVR(m);\r | |
270 | }\r | |
271 | \r | |
272 | /*opcode=0x04*/\r | |
273 | static void i86op_add_byte_AL_IMM(PC_ENV *m)\r | |
274 | {\r | |
275 | uint8 srcval;\r | |
276 | srcval = fetch_byte_imm(m);\r | |
277 | m->R_AL = add_byte(m, m->R_AL, srcval);\r | |
278 | DECODE_CLEAR_SEGOVR(m);\r | |
279 | }\r | |
280 | \r | |
281 | /*opcode=0x05*/\r | |
282 | static void i86op_add_word_AX_IMM(PC_ENV *m)\r | |
283 | {\r | |
284 | uint16 srcval;\r | |
285 | srcval = fetch_word_imm(m);\r | |
286 | m->R_AX = add_word(m, m->R_AX, srcval);\r | |
287 | DECODE_CLEAR_SEGOVR(m);\r | |
288 | }\r | |
289 | \r | |
290 | /*opcode=0x06*/\r | |
291 | static void i86op_push_ES(PC_ENV *m)\r | |
292 | {\r | |
293 | push_word(m,m->R_ES);\r | |
294 | DECODE_CLEAR_SEGOVR(m);\r | |
295 | }\r | |
296 | \r | |
297 | /*opcode=0x07*/\r | |
298 | static void i86op_pop_ES(PC_ENV *m)\r | |
299 | {\r | |
300 | m->R_ES = pop_word(m);\r | |
301 | DECODE_CLEAR_SEGOVR(m);\r | |
302 | }\r | |
303 | \r | |
304 | /*opcode=0x08*/\r | |
305 | static void i86op_or_byte_RM_R(PC_ENV *m)\r | |
306 | {\r | |
307 | uint16 mod,rl,rh;\r | |
308 | uint8 *destreg,*srcreg;\r | |
309 | uint16 destoffset;\r | |
310 | uint8 destval;\r | |
311 | FETCH_DECODE_MODRM(m,mod,rh,rl);\r | |
312 | switch (mod)\r | |
313 | {\r | |
314 | case 0:\r | |
315 | destoffset=decode_rm00_address(m,rl);\r | |
316 | destval = fetch_data_byte(m,destoffset);\r | |
317 | srcreg = DECODE_RM_BYTE_REGISTER(m,rh);\r | |
318 | destval = or_byte(m, destval, *srcreg);\r | |
319 | store_data_byte(m,destoffset,destval);\r | |
320 | break;\r | |
321 | case 1:\r | |
322 | destoffset=decode_rm01_address(m,rl);\r | |
323 | destval = fetch_data_byte(m,destoffset);\r | |
324 | srcreg = DECODE_RM_BYTE_REGISTER(m,rh);\r | |
325 | destval = or_byte(m, destval, *srcreg);\r | |
326 | store_data_byte(m,destoffset,destval);\r | |
327 | break;\r | |
328 | case 2:\r | |
329 | destoffset=decode_rm10_address(m,rl);\r | |
330 | destval = fetch_data_byte(m,destoffset);\r | |
331 | srcreg = DECODE_RM_BYTE_REGISTER(m,rh);\r | |
332 | destval = or_byte(m, destval, *srcreg);\r | |
333 | store_data_byte(m,destoffset,destval);\r | |
334 | break;\r | |
335 | case 3: /* register to register */\r | |
336 | destreg = DECODE_RM_BYTE_REGISTER(m,rl);\r | |
337 | srcreg = DECODE_RM_BYTE_REGISTER(m,rh);\r | |
338 | *destreg = or_byte(m, *destreg, *srcreg);\r | |
339 | break;\r | |
340 | }\r | |
341 | DECODE_CLEAR_SEGOVR(m);\r | |
342 | }\r | |
343 | \r | |
344 | /*opcode=0x09*/\r | |
345 | static void i86op_or_word_RM_R(PC_ENV *m)\r | |
346 | {\r | |
347 | uint16 mod,rl,rh;\r | |
348 | uint16 *destreg,*srcreg;\r | |
349 | uint16 destoffset;\r | |
350 | uint16 destval;\r | |
351 | FETCH_DECODE_MODRM(m,mod,rh,rl);\r | |
352 | switch (mod)\r | |
353 | {\r | |
354 | case 0:\r | |
355 | destoffset=decode_rm00_address(m,rl);\r | |
356 | destval = fetch_data_word(m,destoffset);\r | |
357 | srcreg = DECODE_RM_WORD_REGISTER(m,rh);\r | |
358 | destval = or_word(m, destval, *srcreg);\r | |
359 | store_data_word(m,destoffset,destval);\r | |
360 | break;\r | |
361 | case 1:\r | |
362 | destoffset=decode_rm01_address(m,rl);\r | |
363 | destval = fetch_data_word(m,destoffset);\r | |
364 | srcreg = DECODE_RM_WORD_REGISTER(m,rh);\r | |
365 | destval = or_word(m, destval, *srcreg);\r | |
366 | store_data_word(m,destoffset,destval);\r | |
367 | break;\r | |
368 | case 2:\r | |
369 | destoffset=decode_rm10_address(m,rl);\r | |
370 | destval = fetch_data_word(m,destoffset);\r | |
371 | srcreg = DECODE_RM_WORD_REGISTER(m,rh);\r | |
372 | destval = or_word(m, destval, *srcreg);\r | |
373 | store_data_word(m,destoffset,destval);\r | |
374 | break;\r | |
375 | case 3: /* register to register */\r | |
376 | destreg = DECODE_RM_WORD_REGISTER(m,rl);\r | |
377 | srcreg = DECODE_RM_WORD_REGISTER(m,rh);\r | |
378 | *destreg = or_word(m, *destreg, *srcreg);\r | |
379 | break;\r | |
380 | }\r | |
381 | DECODE_CLEAR_SEGOVR(m);\r | |
382 | }\r | |
383 | \r | |
384 | /*opcode=0x0a*/\r | |
385 | static void i86op_or_byte_R_RM(PC_ENV *m)\r | |
386 | {\r | |
387 | uint16 mod,rl,rh;\r | |
388 | uint8 *destreg,*srcreg;\r | |
389 | uint16 srcoffset;\r | |
390 | uint8 srcval;\r | |
391 | FETCH_DECODE_MODRM(m,mod,rh,rl);\r | |
392 | switch (mod)\r | |
393 | {\r | |
394 | case 0:\r | |
395 | destreg = DECODE_RM_BYTE_REGISTER(m,rh);\r | |
396 | srcoffset=decode_rm00_address(m,rl);\r | |
397 | srcval = fetch_data_byte(m,srcoffset);\r | |
398 | *destreg = or_byte(m, *destreg, srcval);\r | |
399 | break;\r | |
400 | case 1:\r | |
401 | destreg = DECODE_RM_BYTE_REGISTER(m,rh);\r | |
402 | srcoffset=decode_rm01_address(m,rl);\r | |
403 | srcval = fetch_data_byte(m,srcoffset);\r | |
404 | *destreg = or_byte(m, *destreg, srcval);\r | |
405 | break;\r | |
406 | case 2:\r | |
407 | destreg = DECODE_RM_BYTE_REGISTER(m,rh);\r | |
408 | srcoffset=decode_rm10_address(m,rl);\r | |
409 | srcval = fetch_data_byte(m,srcoffset);\r | |
410 | *destreg = or_byte(m, * destreg, srcval);\r | |
411 | break;\r | |
412 | case 3: /* register to register */\r | |
413 | destreg = DECODE_RM_BYTE_REGISTER(m,rh);\r | |
414 | srcreg = DECODE_RM_BYTE_REGISTER(m,rl);\r | |
415 | *destreg = or_byte(m, *destreg, *srcreg);\r | |
416 | break;\r | |
417 | }\r | |
418 | DECODE_CLEAR_SEGOVR(m);\r | |
419 | }\r | |
420 | \r | |
421 | /*opcode=0x0b*/\r | |
422 | static void i86op_or_word_R_RM(PC_ENV *m)\r | |
423 | {\r | |
424 | uint16 mod,rl,rh;\r | |
425 | uint16 *destreg,*srcreg;\r | |
426 | uint16 srcoffset;\r | |
427 | uint16 srcval;\r | |
428 | FETCH_DECODE_MODRM(m,mod,rh,rl);\r | |
429 | switch (mod)\r | |
430 | {\r | |
431 | case 0:\r | |
432 | destreg = DECODE_RM_WORD_REGISTER(m,rh);\r | |
433 | srcoffset=decode_rm00_address(m,rl);\r | |
434 | srcval = fetch_data_word(m,srcoffset);\r | |
435 | *destreg = or_word(m, *destreg, srcval);\r | |
436 | break;\r | |
437 | case 1:\r | |
438 | destreg = DECODE_RM_WORD_REGISTER(m,rh);\r | |
439 | srcoffset=decode_rm01_address(m,rl);\r | |
440 | srcval = fetch_data_word(m,srcoffset);\r | |
441 | *destreg = or_word(m, *destreg, srcval);\r | |
442 | break;\r | |
443 | case 2:\r | |
444 | destreg = DECODE_RM_WORD_REGISTER(m,rh);\r | |
445 | srcoffset=decode_rm10_address(m,rl);\r | |
446 | srcval = fetch_data_word(m,srcoffset);\r | |
447 | *destreg = or_word(m, *destreg, srcval);\r | |
448 | break;\r | |
449 | case 3: /* register to register */\r | |
450 | destreg = DECODE_RM_WORD_REGISTER(m,rh);\r | |
451 | srcreg = DECODE_RM_WORD_REGISTER(m,rl);\r | |
452 | *destreg = or_word(m, *destreg, *srcreg);\r | |
453 | break;\r | |
454 | }\r | |
455 | DECODE_CLEAR_SEGOVR(m);\r | |
456 | }\r | |
457 | \r | |
458 | /*opcode=0x0c*/\r | |
459 | static void i86op_or_byte_AL_IMM(PC_ENV *m)\r | |
460 | {\r | |
461 | uint8 srcval;\r | |
462 | srcval = fetch_byte_imm(m);\r | |
463 | m->R_AL = or_byte(m, m->R_AL, srcval);\r | |
464 | DECODE_CLEAR_SEGOVR(m);\r | |
465 | }\r | |
466 | \r | |
467 | /*opcode=0x0d*/\r | |
468 | static void i86op_or_word_AX_IMM(PC_ENV *m)\r | |
469 | {\r | |
470 | uint16 srcval;\r | |
471 | srcval = fetch_word_imm(m);\r | |
472 | m->R_AX = or_word(m, m->R_AX, srcval);\r | |
473 | DECODE_CLEAR_SEGOVR(m);\r | |
474 | }\r | |
475 | \r | |
476 | /*opcode=0x0e*/\r | |
477 | static void i86op_push_CS(PC_ENV *m)\r | |
478 | {\r | |
479 | push_word(m,m->R_CS);\r | |
480 | DECODE_CLEAR_SEGOVR(m);\r | |
481 | }\r | |
482 | \r | |
483 | /*opcode=0x0f === ILLEGAL OP*/\r | |
484 | \r | |
485 | /*opcode=0x10*/\r | |
486 | static void i86op_adc_byte_RM_R(PC_ENV *m)\r | |
487 | {\r | |
488 | uint16 mod,rl,rh;\r | |
489 | uint8 *destreg,*srcreg;\r | |
490 | uint16 destoffset;\r | |
491 | uint8 destval;\r | |
492 | FETCH_DECODE_MODRM(m,mod,rh,rl);\r | |
493 | switch (mod)\r | |
494 | {\r | |
495 | case 0:\r | |
496 | destoffset=decode_rm00_address(m,rl);\r | |
497 | destval = fetch_data_byte(m,destoffset);\r | |
498 | srcreg = DECODE_RM_BYTE_REGISTER(m,rh);\r | |
499 | destval = adc_byte(m, destval, *srcreg);\r | |
500 | store_data_byte(m,destoffset,destval);\r | |
501 | break;\r | |
502 | case 1:\r | |
503 | destoffset=decode_rm01_address(m,rl);\r | |
504 | destval = fetch_data_byte(m,destoffset);\r | |
505 | srcreg = DECODE_RM_BYTE_REGISTER(m,rh);\r | |
506 | destval = adc_byte(m, destval, *srcreg);\r | |
507 | store_data_byte(m,destoffset,destval);\r | |
508 | break;\r | |
509 | case 2:\r | |
510 | destoffset=decode_rm10_address(m,rl);\r | |
511 | destval = fetch_data_byte(m,destoffset);\r | |
512 | srcreg = DECODE_RM_BYTE_REGISTER(m,rh);\r | |
513 | destval = adc_byte(m, destval, *srcreg);\r | |
514 | store_data_byte(m,destoffset,destval);\r | |
515 | break;\r | |
516 | case 3: /* register to register */\r | |
517 | destreg = DECODE_RM_BYTE_REGISTER(m,rl);\r | |
518 | srcreg = DECODE_RM_BYTE_REGISTER(m,rh);\r | |
519 | *destreg = adc_byte(m, *destreg, *srcreg);\r | |
520 | break;\r | |
521 | }\r | |
522 | DECODE_CLEAR_SEGOVR(m);\r | |
523 | }\r | |
524 | \r | |
525 | /*opcode=0x11*/\r | |
526 | static void i86op_adc_word_RM_R(PC_ENV *m)\r | |
527 | {\r | |
528 | uint16 mod,rl,rh;\r | |
529 | uint16 *destreg,*srcreg;\r | |
530 | uint16 destoffset;\r | |
531 | uint16 destval;\r | |
532 | FETCH_DECODE_MODRM(m,mod,rh,rl);\r | |
533 | switch (mod)\r | |
534 | {\r | |
535 | case 0:\r | |
536 | destoffset=decode_rm00_address(m,rl);\r | |
537 | destval = fetch_data_word(m,destoffset);\r | |
538 | srcreg = DECODE_RM_WORD_REGISTER(m,rh);\r | |
539 | destval = adc_word(m, destval, *srcreg);\r | |
540 | store_data_word(m,destoffset,destval);\r | |
541 | break;\r | |
542 | case 1:\r | |
543 | destoffset=decode_rm01_address(m,rl);\r | |
544 | destval = fetch_data_word(m,destoffset);\r | |
545 | srcreg = DECODE_RM_WORD_REGISTER(m,rh);\r | |
546 | destval = adc_word(m, destval, *srcreg);\r | |
547 | store_data_word(m,destoffset,destval);\r | |
548 | break;\r | |
549 | case 2:\r | |
550 | destoffset=decode_rm10_address(m,rl);\r | |
551 | destval = fetch_data_word(m,destoffset);\r | |
552 | srcreg = DECODE_RM_WORD_REGISTER(m,rh);\r | |
553 | destval = adc_word(m, destval, *srcreg);\r | |
554 | store_data_word(m,destoffset,destval);\r | |
555 | break;\r | |
556 | case 3: /* register to register */\r | |
557 | destreg = DECODE_RM_WORD_REGISTER(m,rl);\r | |
558 | srcreg = DECODE_RM_WORD_REGISTER(m,rh);\r | |
559 | *destreg = adc_word(m, *destreg, *srcreg);\r | |
560 | break;\r | |
561 | }\r | |
562 | DECODE_CLEAR_SEGOVR(m);\r | |
563 | }\r | |
564 | \r | |
565 | /*opcode=0x12*/\r | |
566 | static void i86op_adc_byte_R_RM(PC_ENV *m)\r | |
567 | {\r | |
568 | uint16 mod,rl,rh;\r | |
569 | uint8 *destreg,*srcreg;\r | |
570 | uint16 srcoffset;\r | |
571 | uint8 srcval;\r | |
572 | FETCH_DECODE_MODRM(m,mod,rh,rl);\r | |
573 | switch (mod)\r | |
574 | {\r | |
575 | case 0:\r | |
576 | destreg = DECODE_RM_BYTE_REGISTER(m,rh);\r | |
577 | srcoffset=decode_rm00_address(m,rl);\r | |
578 | srcval = fetch_data_byte(m,srcoffset);\r | |
579 | *destreg = adc_byte(m, *destreg, srcval);\r | |
580 | break;\r | |
581 | case 1:\r | |
582 | destreg = DECODE_RM_BYTE_REGISTER(m,rh);\r | |
583 | srcoffset=decode_rm01_address(m,rl);\r | |
584 | srcval = fetch_data_byte(m,srcoffset);\r | |
585 | *destreg = adc_byte(m, *destreg, srcval);\r | |
586 | break;\r | |
587 | case 2:\r | |
588 | destreg = DECODE_RM_BYTE_REGISTER(m,rh);\r | |
589 | srcoffset=decode_rm10_address(m,rl);\r | |
590 | srcval = fetch_data_byte(m,srcoffset);\r | |
591 | *destreg = adc_byte(m, * destreg, srcval);\r | |
592 | break;\r | |
593 | case 3: /* register to register */\r | |
594 | destreg = DECODE_RM_BYTE_REGISTER(m,rh);\r | |
595 | srcreg = DECODE_RM_BYTE_REGISTER(m,rl);\r | |
596 | *destreg = adc_byte(m, *destreg, *srcreg);\r | |
597 | break;\r | |
598 | }\r | |
599 | DECODE_CLEAR_SEGOVR(m);\r | |
600 | }\r | |
601 | \r | |
602 | /*opcode=0x13*/\r | |
603 | static void i86op_adc_word_R_RM(PC_ENV *m)\r | |
604 | {\r | |
605 | uint16 mod,rl,rh;\r | |
606 | uint16 *destreg,*srcreg;\r | |
607 | uint16 srcoffset;\r | |
608 | uint16 srcval;\r | |
609 | FETCH_DECODE_MODRM(m,mod,rh,rl);\r | |
610 | switch (mod)\r | |
611 | {\r | |
612 | case 0:\r | |
613 | destreg = DECODE_RM_WORD_REGISTER(m,rh);\r | |
614 | srcoffset=decode_rm00_address(m,rl);\r | |
615 | srcval = fetch_data_word(m,srcoffset);\r | |
616 | *destreg = adc_word(m, *destreg, srcval);\r | |
617 | break;\r | |
618 | case 1:\r | |
619 | destreg = DECODE_RM_WORD_REGISTER(m,rh);\r | |
620 | srcoffset=decode_rm01_address(m,rl);\r | |
621 | srcval = fetch_data_word(m,srcoffset);\r | |
622 | *destreg = adc_word(m, *destreg, srcval);\r | |
623 | break;\r | |
624 | case 2:\r | |
625 | destreg = DECODE_RM_WORD_REGISTER(m,rh);\r | |
626 | srcoffset=decode_rm10_address(m,rl);\r | |
627 | srcval = fetch_data_word(m,srcoffset);\r | |
628 | *destreg = adc_word(m, *destreg, srcval);\r | |
629 | break;\r | |
630 | case 3: /* register to register */\r | |
631 | destreg = DECODE_RM_WORD_REGISTER(m,rh);\r | |
632 | srcreg = DECODE_RM_WORD_REGISTER(m,rl);\r | |
633 | *destreg = adc_word(m, *destreg, *srcreg);\r | |
634 | break;\r | |
635 | }\r | |
636 | DECODE_CLEAR_SEGOVR(m);\r | |
637 | }\r | |
638 | \r | |
639 | /*opcode=0x14*/\r | |
640 | static void i86op_adc_byte_AL_IMM(PC_ENV *m)\r | |
641 | {\r | |
642 | uint8 srcval;\r | |
643 | srcval = fetch_byte_imm(m);\r | |
644 | m->R_AL = adc_byte(m, m->R_AL, srcval);\r | |
645 | DECODE_CLEAR_SEGOVR(m);\r | |
646 | }\r | |
647 | \r | |
648 | /*opcode=0x15*/\r | |
649 | static void i86op_adc_word_AX_IMM(PC_ENV *m)\r | |
650 | {\r | |
651 | uint16 srcval;\r | |
652 | srcval = fetch_word_imm(m);\r | |
653 | m->R_AX = adc_word(m, m->R_AX, srcval);\r | |
654 | DECODE_CLEAR_SEGOVR(m);\r | |
655 | }\r | |
656 | \r | |
657 | /*opcode=0x16*/\r | |
658 | static void i86op_push_SS(PC_ENV *m)\r | |
659 | {\r | |
660 | push_word(m,m->R_SS);\r | |
661 | DECODE_CLEAR_SEGOVR(m);\r | |
662 | }\r | |
663 | \r | |
664 | /*opcode=0x17*/\r | |
665 | static void i86op_pop_SS(PC_ENV *m)\r | |
666 | {\r | |
667 | m->R_SS = pop_word(m);\r | |
668 | DECODE_CLEAR_SEGOVR(m);\r | |
669 | }\r | |
670 | \r | |
671 | /*opcode=0x18*/\r | |
672 | static void i86op_sbb_byte_RM_R(PC_ENV *m)\r | |
673 | {\r | |
674 | uint16 mod,rl,rh;\r | |
675 | uint8 *destreg,*srcreg;\r | |
676 | uint16 destoffset;\r | |
677 | uint8 destval;\r | |
678 | FETCH_DECODE_MODRM(m,mod,rh,rl);\r | |
679 | switch (mod)\r | |
680 | {\r | |
681 | case 0:\r | |
682 | destoffset=decode_rm00_address(m,rl);\r | |
683 | destval = fetch_data_byte(m,destoffset);\r | |
684 | srcreg = DECODE_RM_BYTE_REGISTER(m,rh);\r | |
685 | destval = sbb_byte(m, destval, *srcreg);\r | |
686 | store_data_byte(m,destoffset,destval);\r | |
687 | break;\r | |
688 | case 1:\r | |
689 | destoffset=decode_rm01_address(m,rl);\r | |
690 | destval = fetch_data_byte(m,destoffset);\r | |
691 | srcreg = DECODE_RM_BYTE_REGISTER(m,rh);\r | |
692 | destval = sbb_byte(m, destval, *srcreg);\r | |
693 | store_data_byte(m,destoffset,destval);\r | |
694 | break;\r | |
695 | case 2:\r | |
696 | destoffset=decode_rm10_address(m,rl);\r | |
697 | destval = fetch_data_byte(m,destoffset);\r | |
698 | srcreg = DECODE_RM_BYTE_REGISTER(m,rh);\r | |
699 | destval = sbb_byte(m, destval, *srcreg);\r | |
700 | store_data_byte(m,destoffset,destval);\r | |
701 | break;\r | |
702 | case 3: /* register to register */\r | |
703 | destreg = DECODE_RM_BYTE_REGISTER(m,rl);\r | |
704 | srcreg = DECODE_RM_BYTE_REGISTER(m,rh);\r | |
705 | *destreg = sbb_byte(m, *destreg, *srcreg);\r | |
706 | break;\r | |
707 | }\r | |
708 | DECODE_CLEAR_SEGOVR(m);\r | |
709 | }\r | |
710 | \r | |
711 | /*opcode=0x19*/\r | |
712 | static void i86op_sbb_word_RM_R(PC_ENV *m)\r | |
713 | {\r | |
714 | uint16 mod,rl,rh;\r | |
715 | uint16 *destreg,*srcreg;\r | |
716 | uint16 destoffset;\r | |
717 | uint16 destval;\r | |
718 | FETCH_DECODE_MODRM(m,mod,rh,rl);\r | |
719 | switch (mod)\r | |
720 | {\r | |
721 | case 0:\r | |
722 | destoffset=decode_rm00_address(m,rl);\r | |
723 | destval = fetch_data_word(m,destoffset);\r | |
724 | srcreg = DECODE_RM_WORD_REGISTER(m,rh);\r | |
725 | destval = sbb_word(m, destval, *srcreg);\r | |
726 | store_data_word(m,destoffset,destval);\r | |
727 | break;\r | |
728 | case 1:\r | |
729 | destoffset=decode_rm01_address(m,rl);\r | |
730 | destval = fetch_data_word(m,destoffset);\r | |
731 | srcreg = DECODE_RM_WORD_REGISTER(m,rh);\r | |
732 | destval = sbb_word(m, destval, *srcreg);\r | |
733 | store_data_word(m,destoffset,destval);\r | |
734 | break;\r | |
735 | case 2:\r | |
736 | destoffset=decode_rm10_address(m,rl);\r | |
737 | destval = fetch_data_word(m,destoffset);\r | |
738 | srcreg = DECODE_RM_WORD_REGISTER(m,rh);\r | |
739 | destval = sbb_word(m, destval, *srcreg);\r | |
740 | store_data_word(m,destoffset,destval);\r | |
741 | break;\r | |
742 | case 3: /* register to register */\r | |
743 | destreg = DECODE_RM_WORD_REGISTER(m,rl);\r | |
744 | srcreg = DECODE_RM_WORD_REGISTER(m,rh);\r | |
745 | *destreg = sbb_word(m, *destreg, *srcreg);\r | |
746 | break;\r | |
747 | }\r | |
748 | DECODE_CLEAR_SEGOVR(m);\r | |
749 | }\r | |
750 | \r | |
751 | /*opcode=0x1a*/\r | |
752 | static void i86op_sbb_byte_R_RM(PC_ENV *m)\r | |
753 | {\r | |
754 | uint16 mod,rl,rh;\r | |
755 | uint8 *destreg,*srcreg;\r | |
756 | uint16 srcoffset;\r | |
757 | uint8 srcval;\r | |
758 | FETCH_DECODE_MODRM(m,mod,rh,rl);\r | |
759 | switch (mod)\r | |
760 | {\r | |
761 | case 0:\r | |
762 | destreg = DECODE_RM_BYTE_REGISTER(m,rh);\r | |
763 | srcoffset=decode_rm00_address(m,rl);\r | |
764 | srcval = fetch_data_byte(m,srcoffset);\r | |
765 | *destreg = sbb_byte(m, *destreg, srcval);\r | |
766 | break;\r | |
767 | case 1:\r | |
768 | destreg = DECODE_RM_BYTE_REGISTER(m,rh);\r | |
769 | srcoffset=decode_rm01_address(m,rl);\r | |
770 | srcval = fetch_data_byte(m,srcoffset);\r | |
771 | *destreg = sbb_byte(m, *destreg, srcval);\r | |
772 | break;\r | |
773 | case 2:\r | |
774 | destreg = DECODE_RM_BYTE_REGISTER(m,rh);\r | |
775 | srcoffset=decode_rm10_address(m,rl);\r | |
776 | srcval = fetch_data_byte(m,srcoffset);\r | |
777 | *destreg = sbb_byte(m, * destreg, srcval);\r | |
778 | break;\r | |
779 | case 3: /* register to register */\r | |
780 | destreg = DECODE_RM_BYTE_REGISTER(m,rh);\r | |
781 | srcreg = DECODE_RM_BYTE_REGISTER(m,rl);\r | |
782 | *destreg = sbb_byte(m, *destreg, *srcreg);\r | |
783 | break;\r | |
784 | }\r | |
785 | DECODE_CLEAR_SEGOVR(m);\r | |
786 | }\r | |
787 | \r | |
788 | /*opcode=0x1b*/\r | |
789 | static void i86op_sbb_word_R_RM(PC_ENV *m)\r | |
790 | {\r | |
791 | uint16 mod,rl,rh;\r | |
792 | uint16 *destreg,*srcreg;\r | |
793 | uint16 srcoffset;\r | |
794 | uint16 srcval;\r | |
795 | FETCH_DECODE_MODRM(m,mod,rh,rl);\r | |
796 | switch (mod)\r | |
797 | {\r | |
798 | case 0:\r | |
799 | destreg = DECODE_RM_WORD_REGISTER(m,rh);\r | |
800 | srcoffset=decode_rm00_address(m,rl);\r | |
801 | srcval = fetch_data_word(m,srcoffset);\r | |
802 | *destreg = sbb_word(m, *destreg, srcval);\r | |
803 | break;\r | |
804 | case 1:\r | |
805 | destreg = DECODE_RM_WORD_REGISTER(m,rh);\r | |
806 | srcoffset=decode_rm01_address(m,rl);\r | |
807 | srcval = fetch_data_word(m,srcoffset);\r | |
808 | *destreg = sbb_word(m, *destreg, srcval);\r | |
809 | break;\r | |
810 | case 2:\r | |
811 | destreg = DECODE_RM_WORD_REGISTER(m,rh);\r | |
812 | srcoffset=decode_rm10_address(m,rl);\r | |
813 | srcval = fetch_data_word(m,srcoffset);\r | |
814 | *destreg = sbb_word(m, *destreg, srcval);\r | |
815 | break;\r | |
816 | case 3: /* register to register */\r | |
817 | destreg = DECODE_RM_WORD_REGISTER(m,rh);\r | |
818 | srcreg = DECODE_RM_WORD_REGISTER(m,rl);\r | |
819 | *destreg = sbb_word(m, *destreg, *srcreg);\r | |
820 | break;\r | |
821 | }\r | |
822 | DECODE_CLEAR_SEGOVR(m);\r | |
823 | }\r | |
824 | \r | |
825 | /*opcode=0x1c*/\r | |
826 | static void i86op_sbb_byte_AL_IMM(PC_ENV *m)\r | |
827 | {\r | |
828 | uint8 srcval;\r | |
829 | srcval = fetch_byte_imm(m);\r | |
830 | m->R_AL = sbb_byte(m, m->R_AL, srcval);\r | |
831 | DECODE_CLEAR_SEGOVR(m);\r | |
832 | }\r | |
833 | \r | |
834 | /*opcode=0x1d*/\r | |
835 | static void i86op_sbb_word_AX_IMM(PC_ENV *m)\r | |
836 | {\r | |
837 | uint16 srcval;\r | |
838 | srcval = fetch_word_imm(m);\r | |
839 | m->R_AX = sbb_word(m, m->R_AX, srcval);\r | |
840 | DECODE_CLEAR_SEGOVR(m);\r | |
841 | }\r | |
842 | \r | |
843 | /*opcode=0x1e*/\r | |
844 | static void i86op_push_DS(PC_ENV *m)\r | |
845 | {\r | |
846 | push_word(m,m->R_DS);\r | |
847 | DECODE_CLEAR_SEGOVR(m);\r | |
848 | }\r | |
849 | \r | |
850 | /*opcode=0x1f*/\r | |
851 | static void i86op_pop_DS(PC_ENV *m)\r | |
852 | {\r | |
853 | m->R_DS = pop_word(m);\r | |
854 | DECODE_CLEAR_SEGOVR(m);\r | |
855 | }\r | |
856 | \r | |
857 | /*opcode=0x20*/\r | |
858 | static void i86op_and_byte_RM_R(PC_ENV *m)\r | |
859 | {\r | |
860 | uint16 mod,rl,rh;\r | |
861 | uint8 *destreg,*srcreg;\r | |
862 | uint16 destoffset;\r | |
863 | uint8 destval;\r | |
864 | FETCH_DECODE_MODRM(m,mod,rh,rl);\r | |
865 | switch (mod)\r | |
866 | {\r | |
867 | case 0:\r | |
868 | destoffset=decode_rm00_address(m,rl);\r | |
869 | destval = fetch_data_byte(m,destoffset);\r | |
870 | srcreg = DECODE_RM_BYTE_REGISTER(m,rh);\r | |
871 | destval = and_byte(m, destval, *srcreg);\r | |
872 | store_data_byte(m,destoffset,destval);\r | |
873 | break;\r | |
874 | case 1:\r | |
875 | destoffset=decode_rm01_address(m,rl);\r | |
876 | destval = fetch_data_byte(m,destoffset);\r | |
877 | srcreg = DECODE_RM_BYTE_REGISTER(m,rh);\r | |
878 | destval = and_byte(m, destval, *srcreg);\r | |
879 | store_data_byte(m,destoffset,destval);\r | |
880 | break;\r | |
881 | case 2:\r | |
882 | destoffset=decode_rm10_address(m,rl);\r | |
883 | destval = fetch_data_byte(m,destoffset);\r | |
884 | srcreg = DECODE_RM_BYTE_REGISTER(m,rh);\r | |
885 | destval = and_byte(m, destval, *srcreg);\r | |
886 | store_data_byte(m,destoffset,destval);\r | |
887 | break;\r | |
888 | case 3: /* register to register */\r | |
889 | destreg = DECODE_RM_BYTE_REGISTER(m,rl);\r | |
890 | srcreg = DECODE_RM_BYTE_REGISTER(m,rh);\r | |
891 | *destreg = and_byte(m, *destreg, *srcreg);\r | |
892 | break;\r | |
893 | }\r | |
894 | DECODE_CLEAR_SEGOVR(m);\r | |
895 | }\r | |
896 | \r | |
897 | /*opcode=0x21*/\r | |
898 | static void i86op_and_word_RM_R(PC_ENV *m)\r | |
899 | {\r | |
900 | uint16 mod,rl,rh;\r | |
901 | uint16 *destreg,*srcreg;\r | |
902 | uint16 destoffset;\r | |
903 | uint16 destval;\r | |
904 | FETCH_DECODE_MODRM(m,mod,rh,rl);\r | |
905 | switch (mod)\r | |
906 | {\r | |
907 | case 0:\r | |
908 | destoffset=decode_rm00_address(m,rl);\r | |
909 | destval = fetch_data_word(m,destoffset);\r | |
910 | srcreg = DECODE_RM_WORD_REGISTER(m,rh);\r | |
911 | destval = and_word(m, destval, *srcreg);\r | |
912 | store_data_word(m,destoffset,destval);\r | |
913 | break;\r | |
914 | case 1:\r | |
915 | destoffset=decode_rm01_address(m,rl);\r | |
916 | destval = fetch_data_word(m,destoffset);\r | |
917 | srcreg = DECODE_RM_WORD_REGISTER(m,rh);\r | |
918 | destval = and_word(m, destval, *srcreg);\r | |
919 | store_data_word(m,destoffset,destval);\r | |
920 | break;\r | |
921 | case 2:\r | |
922 | destoffset=decode_rm10_address(m,rl);\r | |
923 | destval = fetch_data_word(m,destoffset);\r | |
924 | srcreg = DECODE_RM_WORD_REGISTER(m,rh);\r | |
925 | destval = and_word(m, destval, *srcreg);\r | |
926 | store_data_word(m,destoffset,destval);\r | |
927 | break;\r | |
928 | case 3: /* register to register */\r | |
929 | destreg = DECODE_RM_WORD_REGISTER(m,rl);\r | |
930 | srcreg = DECODE_RM_WORD_REGISTER(m,rh);\r | |
931 | *destreg = and_word(m, *destreg, *srcreg);\r | |
932 | break;\r | |
933 | }\r | |
934 | DECODE_CLEAR_SEGOVR(m);\r | |
935 | }\r | |
936 | \r | |
937 | /*opcode=0x22*/\r | |
938 | static void i86op_and_byte_R_RM(PC_ENV *m)\r | |
939 | {\r | |
940 | uint16 mod,rl,rh;\r | |
941 | uint8 *destreg,*srcreg;\r | |
942 | uint16 srcoffset;\r | |
943 | uint8 srcval;\r | |
944 | FETCH_DECODE_MODRM(m,mod,rh,rl);\r | |
945 | switch (mod)\r | |
946 | {\r | |
947 | case 0:\r | |
948 | destreg = DECODE_RM_BYTE_REGISTER(m,rh);\r | |
949 | srcoffset=decode_rm00_address(m,rl);\r | |
950 | srcval = fetch_data_byte(m,srcoffset);\r | |
951 | *destreg = and_byte(m, *destreg, srcval);\r | |
952 | break;\r | |
953 | case 1:\r | |
954 | destreg = DECODE_RM_BYTE_REGISTER(m,rh);\r | |
955 | srcoffset=decode_rm01_address(m,rl);\r | |
956 | srcval = fetch_data_byte(m,srcoffset);\r | |
957 | *destreg = and_byte(m, *destreg, srcval);\r | |
958 | break;\r | |
959 | case 2:\r | |
960 | destreg = DECODE_RM_BYTE_REGISTER(m,rh);\r | |
961 | srcoffset=decode_rm10_address(m,rl);\r | |
962 | srcval = fetch_data_byte(m,srcoffset);\r | |
963 | *destreg = and_byte(m, * destreg, srcval);\r | |
964 | break;\r | |
965 | case 3: /* register to register */\r | |
966 | destreg = DECODE_RM_BYTE_REGISTER(m,rh);\r | |
967 | srcreg = DECODE_RM_BYTE_REGISTER(m,rl);\r | |
968 | *destreg = and_byte(m, *destreg, *srcreg);\r | |
969 | break;\r | |
970 | }\r | |
971 | DECODE_CLEAR_SEGOVR(m);\r | |
972 | }\r | |
973 | \r | |
974 | /*opcode=0x23*/\r | |
975 | static void i86op_and_word_R_RM(PC_ENV *m)\r | |
976 | {\r | |
977 | uint16 mod,rl,rh;\r | |
978 | uint16 *destreg,*srcreg;\r | |
979 | uint16 srcoffset;\r | |
980 | uint16 srcval;\r | |
981 | FETCH_DECODE_MODRM(m,mod,rh,rl);\r | |
982 | switch (mod)\r | |
983 | {\r | |
984 | case 0:\r | |
985 | destreg = DECODE_RM_WORD_REGISTER(m,rh);\r | |
986 | srcoffset=decode_rm00_address(m,rl);\r | |
987 | srcval = fetch_data_word(m,srcoffset);\r | |
988 | *destreg = and_word(m, *destreg, srcval);\r | |
989 | break;\r | |
990 | case 1:\r | |
991 | destreg = DECODE_RM_WORD_REGISTER(m,rh);\r | |
992 | srcoffset=decode_rm01_address(m,rl);\r | |
993 | srcval = fetch_data_word(m,srcoffset);\r | |
994 | *destreg = and_word(m, *destreg, srcval);\r | |
995 | break;\r | |
996 | case 2:\r | |
997 | destreg = DECODE_RM_WORD_REGISTER(m,rh);\r | |
998 | srcoffset=decode_rm10_address(m,rl);\r | |
999 | srcval = fetch_data_word(m,srcoffset);\r | |
1000 | *destreg = and_word(m, *destreg, srcval);\r | |
1001 | break;\r | |
1002 | case 3: /* register to register */\r | |
1003 | destreg = DECODE_RM_WORD_REGISTER(m,rh);\r | |
1004 | srcreg = DECODE_RM_WORD_REGISTER(m,rl);\r | |
1005 | *destreg = and_word(m, *destreg, *srcreg);\r | |
1006 | break;\r | |
1007 | }\r | |
1008 | DECODE_CLEAR_SEGOVR(m);\r | |
1009 | }\r | |
1010 | \r | |
1011 | /*opcode=0x24*/\r | |
1012 | static void i86op_and_byte_AL_IMM(PC_ENV *m)\r | |
1013 | {\r | |
1014 | uint8 srcval;\r | |
1015 | srcval = fetch_byte_imm(m);\r | |
1016 | m->R_AL = and_byte(m, m->R_AL, srcval);\r | |
1017 | DECODE_CLEAR_SEGOVR(m);\r | |
1018 | }\r | |
1019 | \r | |
1020 | /*opcode=0x25*/\r | |
1021 | static void i86op_and_word_AX_IMM(PC_ENV *m)\r | |
1022 | {\r | |
1023 | uint16 srcval;\r | |
1024 | srcval = fetch_word_imm(m);\r | |
1025 | m->R_AX = and_word(m, m->R_AX, srcval);\r | |
1026 | DECODE_CLEAR_SEGOVR(m);\r | |
1027 | }\r | |
1028 | \r | |
1029 | /*opcode=0x26*/\r | |
1030 | static void i86op_segovr_ES(PC_ENV *m)\r | |
1031 | {\r | |
1032 | m->sysmode |= SYSMODE_SEGOVR_ES;\r | |
1033 | /* note the lack of DECODE_CLEAR_SEGOVR(r)\r | |
1034 | since, here is one of 4 opcode subroutines we do not\r | |
1035 | want to do this.\r | |
1036 | */\r | |
1037 | }\r | |
1038 | \r | |
1039 | /*opcode=0x27*/\r | |
1040 | static void i86op_daa(PC_ENV *m)\r | |
1041 | {\r | |
1042 | uint16 dbyte;\r | |
1043 | dbyte = m->R_AL;\r | |
1044 | if (ACCESS_FLAG(m,F_AF)|| (dbyte&0xf) > 9)\r | |
1045 | {\r | |
1046 | dbyte += 6;\r | |
1047 | if (dbyte&0x100)\r | |
1048 | SET_FLAG(m, F_CF);\r | |
1049 | SET_FLAG(m, F_AF);\r | |
1050 | }\r | |
1051 | else\r | |
1052 | CLEAR_FLAG(m, F_AF);\r | |
1053 | if (ACCESS_FLAG(m,F_CF) || (dbyte&0xf0) > 0x90)\r | |
1054 | {\r | |
1055 | dbyte += 0x60;\r | |
1056 | SET_FLAG(m, F_CF);\r | |
1057 | }\r | |
1058 | else\r | |
1059 | CLEAR_FLAG(m, F_CF);\r | |
1060 | m->R_AL = (uint8) dbyte;\r | |
1061 | CONDITIONAL_SET_FLAG((m->R_AL & 0x80),m,F_SF);\r | |
1062 | CONDITIONAL_SET_FLAG((m->R_AL == 0), m,F_ZF);\r | |
1063 | CONDITIONAL_SET_FLAG((parity_tab[m->R_AL]),m,F_PF);\r | |
1064 | DECODE_CLEAR_SEGOVR(m);\r | |
1065 | }\r | |
1066 | \r | |
1067 | /*opcode=0x28*/\r | |
1068 | static void i86op_sub_byte_RM_R(PC_ENV *m)\r | |
1069 | {\r | |
1070 | uint16 mod,rl,rh;\r | |
1071 | uint8 *destreg,*srcreg;\r | |
1072 | uint16 destoffset;\r | |
1073 | uint8 destval;\r | |
1074 | FETCH_DECODE_MODRM(m,mod,rh,rl);\r | |
1075 | switch (mod)\r | |
1076 | {\r | |
1077 | case 0:\r | |
1078 | destoffset=decode_rm00_address(m,rl);\r | |
1079 | destval = fetch_data_byte(m,destoffset);\r | |
1080 | srcreg = DECODE_RM_BYTE_REGISTER(m,rh);\r | |
1081 | destval = sub_byte(m, destval, *srcreg);\r | |
1082 | store_data_byte(m,destoffset,destval);\r | |
1083 | break;\r | |
1084 | case 1:\r | |
1085 | destoffset=decode_rm01_address(m,rl);\r | |
1086 | destval = fetch_data_byte(m,destoffset);\r | |
1087 | srcreg = DECODE_RM_BYTE_REGISTER(m,rh);\r | |
1088 | destval = sub_byte(m, destval, *srcreg);\r | |
1089 | store_data_byte(m,destoffset,destval);\r | |
1090 | break;\r | |
1091 | case 2:\r | |
1092 | destoffset=decode_rm10_address(m,rl);\r | |
1093 | destval = fetch_data_byte(m,destoffset);\r | |
1094 | srcreg = DECODE_RM_BYTE_REGISTER(m,rh);\r | |
1095 | destval = sub_byte(m, destval, *srcreg);\r | |
1096 | store_data_byte(m,destoffset,destval);\r | |
1097 | break;\r | |
1098 | case 3: /* register to register */\r | |
1099 | destreg = DECODE_RM_BYTE_REGISTER(m,rl);\r | |
1100 | srcreg = DECODE_RM_BYTE_REGISTER(m,rh);\r | |
1101 | *destreg = sub_byte(m, *destreg, *srcreg);\r | |
1102 | break;\r | |
1103 | }\r | |
1104 | DECODE_CLEAR_SEGOVR(m);\r | |
1105 | }\r | |
1106 | \r | |
1107 | /*opcode=0x29*/\r | |
1108 | static void i86op_sub_word_RM_R(PC_ENV *m)\r | |
1109 | {\r | |
1110 | uint16 mod,rl,rh;\r | |
1111 | uint16 *destreg,*srcreg;\r | |
1112 | uint16 destoffset;\r | |
1113 | uint16 destval;\r | |
1114 | FETCH_DECODE_MODRM(m,mod,rh,rl);\r | |
1115 | switch (mod)\r | |
1116 | {\r | |
1117 | case 0:\r | |
1118 | destoffset=decode_rm00_address(m,rl);\r | |
1119 | destval = fetch_data_word(m,destoffset);\r | |
1120 | srcreg = DECODE_RM_WORD_REGISTER(m,rh);\r | |
1121 | destval = sub_word(m, destval, *srcreg);\r | |
1122 | store_data_word(m,destoffset,destval);\r | |
1123 | break;\r | |
1124 | case 1:\r | |
1125 | destoffset=decode_rm01_address(m,rl);\r | |
1126 | destval = fetch_data_word(m,destoffset);\r | |
1127 | srcreg = DECODE_RM_WORD_REGISTER(m,rh);\r | |
1128 | destval = sub_word(m, destval, *srcreg);\r | |
1129 | store_data_word(m,destoffset,destval);\r | |
1130 | break;\r | |
1131 | case 2:\r | |
1132 | destoffset=decode_rm10_address(m,rl);\r | |
1133 | destval = fetch_data_word(m,destoffset);\r | |
1134 | srcreg = DECODE_RM_WORD_REGISTER(m,rh);\r | |
1135 | destval = sub_word(m, destval, *srcreg);\r | |
1136 | store_data_word(m,destoffset,destval);\r | |
1137 | break;\r | |
1138 | case 3: /* register to register */\r | |
1139 | destreg = DECODE_RM_WORD_REGISTER(m,rl);\r | |
1140 | srcreg = DECODE_RM_WORD_REGISTER(m,rh);\r | |
1141 | *destreg = sub_word(m, *destreg, *srcreg);\r | |
1142 | break;\r | |
1143 | }\r | |
1144 | DECODE_CLEAR_SEGOVR(m);\r | |
1145 | }\r | |
1146 | \r | |
1147 | /*opcode=0x2a*/\r | |
1148 | static void i86op_sub_byte_R_RM(PC_ENV *m)\r | |
1149 | {\r | |
1150 | uint16 mod,rl,rh;\r | |
1151 | uint8 *destreg,*srcreg;\r | |
1152 | uint16 srcoffset;\r | |
1153 | uint8 srcval;\r | |
1154 | FETCH_DECODE_MODRM(m,mod,rh,rl);\r | |
1155 | switch (mod)\r | |
1156 | {\r | |
1157 | case 0:\r | |
1158 | destreg = DECODE_RM_BYTE_REGISTER(m,rh);\r | |
1159 | srcoffset=decode_rm00_address(m,rl);\r | |
1160 | srcval = fetch_data_byte(m,srcoffset);\r | |
1161 | *destreg = sub_byte(m, *destreg, srcval);\r | |
1162 | break;\r | |
1163 | case 1:\r | |
1164 | destreg = DECODE_RM_BYTE_REGISTER(m,rh);\r | |
1165 | srcoffset=decode_rm01_address(m,rl);\r | |
1166 | srcval = fetch_data_byte(m,srcoffset);\r | |
1167 | *destreg = sub_byte(m, *destreg, srcval);\r | |
1168 | break;\r | |
1169 | case 2:\r | |
1170 | destreg = DECODE_RM_BYTE_REGISTER(m,rh);\r | |
1171 | srcoffset=decode_rm10_address(m,rl);\r | |
1172 | srcval = fetch_data_byte(m,srcoffset);\r | |
1173 | *destreg = sub_byte(m, * destreg, srcval);\r | |
1174 | break;\r | |
1175 | case 3: /* register to register */\r | |
1176 | destreg = DECODE_RM_BYTE_REGISTER(m,rh);\r | |
1177 | srcreg = DECODE_RM_BYTE_REGISTER(m,rl);\r | |
1178 | *destreg = sub_byte(m, *destreg, *srcreg);\r | |
1179 | break;\r | |
1180 | }\r | |
1181 | DECODE_CLEAR_SEGOVR(m);\r | |
1182 | }\r | |
1183 | \r | |
1184 | /*opcode=0x2b*/\r | |
1185 | static void i86op_sub_word_R_RM(PC_ENV *m)\r | |
1186 | {\r | |
1187 | uint16 mod,rl,rh;\r | |
1188 | uint16 *destreg,*srcreg;\r | |
1189 | uint16 srcoffset;\r | |
1190 | uint16 srcval;\r | |
1191 | FETCH_DECODE_MODRM(m,mod,rh,rl);\r | |
1192 | switch (mod)\r | |
1193 | {\r | |
1194 | case 0:\r | |
1195 | destreg = DECODE_RM_WORD_REGISTER(m,rh);\r | |
1196 | srcoffset=decode_rm00_address(m,rl);\r | |
1197 | srcval = fetch_data_word(m,srcoffset);\r | |
1198 | *destreg = sub_word(m, *destreg, srcval);\r | |
1199 | break;\r | |
1200 | case 1:\r | |
1201 | destreg = DECODE_RM_WORD_REGISTER(m,rh);\r | |
1202 | srcoffset=decode_rm01_address(m,rl);\r | |
1203 | srcval = fetch_data_word(m,srcoffset);\r | |
1204 | *destreg = sub_word(m, *destreg, srcval);\r | |
1205 | break;\r | |
1206 | case 2:\r | |
1207 | destreg = DECODE_RM_WORD_REGISTER(m,rh);\r | |
1208 | srcoffset=decode_rm10_address(m,rl);\r | |
1209 | srcval = fetch_data_word(m,srcoffset);\r | |
1210 | *destreg = sub_word(m, *destreg, srcval);\r | |
1211 | break;\r | |
1212 | case 3: /* register to register */\r | |
1213 | destreg = DECODE_RM_WORD_REGISTER(m,rh);\r | |
1214 | srcreg = DECODE_RM_WORD_REGISTER(m,rl);\r | |
1215 | *destreg = sub_word(m, *destreg, *srcreg);\r | |
1216 | break;\r | |
1217 | }\r | |
1218 | DECODE_CLEAR_SEGOVR(m);\r | |
1219 | }\r | |
1220 | \r | |
1221 | /*opcode=0x2c*/\r | |
1222 | static void i86op_sub_byte_AL_IMM(PC_ENV *m)\r | |
1223 | {\r | |
1224 | uint8 srcval;\r | |
1225 | srcval = fetch_byte_imm(m);\r | |
1226 | m->R_AL = sub_byte(m, m->R_AL, srcval);\r | |
1227 | DECODE_CLEAR_SEGOVR(m);\r | |
1228 | }\r | |
1229 | \r | |
1230 | /*opcode=0x2d*/\r | |
1231 | static void i86op_sub_word_AX_IMM(PC_ENV *m)\r | |
1232 | {\r | |
1233 | uint16 srcval;\r | |
1234 | srcval = fetch_word_imm(m);\r | |
1235 | m->R_AX = sub_word(m, m->R_AX, srcval);\r | |
1236 | DECODE_CLEAR_SEGOVR(m);\r | |
1237 | }\r | |
1238 | \r | |
1239 | /*opcode=0x2e*/\r | |
1240 | static void i86op_segovr_CS(PC_ENV *m)\r | |
1241 | {\r | |
1242 | m->sysmode |= SYSMODE_SEGOVR_CS;\r | |
1243 | /* note no DECODE_CLEAR_SEGOVER here. */\r | |
1244 | }\r | |
1245 | \r | |
1246 | /*opcode=0x2f*/\r | |
1247 | static void i86op_das(PC_ENV *m)\r | |
1248 | {\r | |
1249 | uint16 dbyte;\r | |
1250 | dbyte = m->R_AL;\r | |
1251 | if ( ACCESS_FLAG(m,F_AF) || (dbyte&0xf) > 9)\r | |
1252 | {\r | |
1253 | dbyte -= 6;\r | |
1254 | if (dbyte&0x100) /* XXXXX --- this is WRONG */\r | |
1255 | SET_FLAG(m, F_CF);\r | |
1256 | SET_FLAG(m, F_AF);\r | |
1257 | }\r | |
1258 | else\r | |
1259 | CLEAR_FLAG(m, F_AF);\r | |
1260 | if (ACCESS_FLAG(m,F_CF) || (dbyte&0xf0) > 0x90)\r | |
1261 | {\r | |
1262 | dbyte -= 0x60;\r | |
1263 | SET_FLAG(m, F_CF);\r | |
1264 | }\r | |
1265 | else\r | |
1266 | CLEAR_FLAG(m, F_CF);\r | |
1267 | m->R_AL = (uint8) dbyte;\r | |
1268 | CONDITIONAL_SET_FLAG(m->R_AL & 0x80,m,F_SF);\r | |
1269 | CONDITIONAL_SET_FLAG(m->R_AL == 0,m,F_ZF);\r | |
1270 | CONDITIONAL_SET_FLAG(parity_tab[m->R_AL],m,F_PF);\r | |
1271 | DECODE_CLEAR_SEGOVR(m);\r | |
1272 | }\r | |
1273 | \r | |
1274 | /*opcode=0x30*/\r | |
1275 | static void i86op_xor_byte_RM_R(PC_ENV *m)\r | |
1276 | {\r | |
1277 | uint16 mod,rl,rh;\r | |
1278 | uint8 *destreg,*srcreg;\r | |
1279 | uint16 destoffset;\r | |
1280 | uint8 destval;\r | |
1281 | FETCH_DECODE_MODRM(m,mod,rh,rl);\r | |
1282 | switch (mod)\r | |
1283 | {\r | |
1284 | case 0:\r | |
1285 | destoffset=decode_rm00_address(m,rl);\r | |
1286 | destval = fetch_data_byte(m,destoffset);\r | |
1287 | srcreg = DECODE_RM_BYTE_REGISTER(m,rh);\r | |
1288 | destval = xor_byte(m, destval, *srcreg);\r | |
1289 | store_data_byte(m,destoffset,destval);\r | |
1290 | break;\r | |
1291 | case 1:\r | |
1292 | destoffset=decode_rm01_address(m,rl);\r | |
1293 | destval = fetch_data_byte(m,destoffset);\r | |
1294 | srcreg = DECODE_RM_BYTE_REGISTER(m,rh);\r | |
1295 | destval = xor_byte(m, destval, *srcreg);\r | |
1296 | store_data_byte(m,destoffset,destval);\r | |
1297 | break;\r | |
1298 | case 2:\r | |
1299 | destoffset=decode_rm10_address(m,rl);\r | |
1300 | destval = fetch_data_byte(m,destoffset);\r | |
1301 | srcreg = DECODE_RM_BYTE_REGISTER(m,rh);\r | |
1302 | destval = xor_byte(m, destval, *srcreg);\r | |
1303 | store_data_byte(m,destoffset,destval);\r | |
1304 | break;\r | |
1305 | case 3: /* register to register */\r | |
1306 | destreg = DECODE_RM_BYTE_REGISTER(m,rl);\r | |
1307 | srcreg = DECODE_RM_BYTE_REGISTER(m,rh);\r | |
1308 | *destreg = xor_byte(m, *destreg, *srcreg);\r | |
1309 | break;\r | |
1310 | }\r | |
1311 | DECODE_CLEAR_SEGOVR(m);\r | |
1312 | }\r | |
1313 | \r | |
1314 | /*opcode=0x31*/\r | |
1315 | static void i86op_xor_word_RM_R(PC_ENV *m)\r | |
1316 | {\r | |
1317 | uint16 mod,rl,rh;\r | |
1318 | uint16 *destreg,*srcreg;\r | |
1319 | uint16 destoffset;\r | |
1320 | uint16 destval;\r | |
1321 | FETCH_DECODE_MODRM(m,mod,rh,rl);\r | |
1322 | switch (mod)\r | |
1323 | {\r | |
1324 | case 0:\r | |
1325 | destoffset=decode_rm00_address(m,rl);\r | |
1326 | destval = fetch_data_word(m,destoffset);\r | |
1327 | srcreg = DECODE_RM_WORD_REGISTER(m,rh);\r | |
1328 | destval = xor_word(m, destval, *srcreg);\r | |
1329 | store_data_word(m,destoffset,destval);\r | |
1330 | break;\r | |
1331 | case 1:\r | |
1332 | destoffset=decode_rm01_address(m,rl);\r | |
1333 | destval = fetch_data_word(m,destoffset);\r | |
1334 | srcreg = DECODE_RM_WORD_REGISTER(m,rh);\r | |
1335 | destval = xor_word(m, destval, *srcreg);\r | |
1336 | store_data_word(m,destoffset,destval);\r | |
1337 | break;\r | |
1338 | case 2:\r | |
1339 | destoffset=decode_rm10_address(m,rl);\r | |
1340 | destval = fetch_data_word(m,destoffset);\r | |
1341 | srcreg = DECODE_RM_WORD_REGISTER(m,rh);\r | |
1342 | destval = xor_word(m, destval, *srcreg);\r | |
1343 | store_data_word(m,destoffset,destval);\r | |
1344 | break;\r | |
1345 | case 3: /* register to register */\r | |
1346 | destreg = DECODE_RM_WORD_REGISTER(m,rl);\r | |
1347 | srcreg = DECODE_RM_WORD_REGISTER(m,rh);\r | |
1348 | *destreg = xor_word(m, *destreg, *srcreg);\r | |
1349 | break;\r | |
1350 | }\r | |
1351 | DECODE_CLEAR_SEGOVR(m);\r | |
1352 | }\r | |
1353 | \r | |
1354 | /*opcode=0x32*/\r | |
1355 | static void i86op_xor_byte_R_RM(PC_ENV *m)\r | |
1356 | {\r | |
1357 | uint16 mod,rl,rh;\r | |
1358 | uint8 *destreg,*srcreg;\r | |
1359 | uint16 srcoffset;\r | |
1360 | uint8 srcval;\r | |
1361 | FETCH_DECODE_MODRM(m,mod,rh,rl);\r | |
1362 | switch (mod)\r | |
1363 | {\r | |
1364 | case 0:\r | |
1365 | destreg = DECODE_RM_BYTE_REGISTER(m,rh);\r | |
1366 | srcoffset=decode_rm00_address(m,rl);\r | |
1367 | srcval = fetch_data_byte(m,srcoffset);\r | |
1368 | *destreg = xor_byte(m, *destreg, srcval);\r | |
1369 | break;\r | |
1370 | case 1:\r | |
1371 | destreg = DECODE_RM_BYTE_REGISTER(m,rh);\r | |
1372 | srcoffset=decode_rm01_address(m,rl);\r | |
1373 | srcval = fetch_data_byte(m,srcoffset);\r | |
1374 | *destreg = xor_byte(m, *destreg, srcval);\r | |
1375 | break;\r | |
1376 | case 2:\r | |
1377 | destreg = DECODE_RM_BYTE_REGISTER(m,rh);\r | |
1378 | srcoffset=decode_rm10_address(m,rl);\r | |
1379 | srcval = fetch_data_byte(m,srcoffset);\r | |
1380 | *destreg = xor_byte(m, *destreg, srcval);\r | |
1381 | break;\r | |
1382 | case 3: /* register to register */\r | |
1383 | destreg = DECODE_RM_BYTE_REGISTER(m,rh);\r | |
1384 | srcreg = DECODE_RM_BYTE_REGISTER(m,rl);\r | |
1385 | *destreg = xor_byte(m, *destreg, *srcreg);\r | |
1386 | break;\r | |
1387 | }\r | |
1388 | DECODE_CLEAR_SEGOVR(m);\r | |
1389 | }\r | |
1390 | \r | |
1391 | /*opcode=0x33*/\r | |
1392 | static void i86op_xor_word_R_RM(PC_ENV *m)\r | |
1393 | {\r | |
1394 | uint16 mod,rl,rh;\r | |
1395 | uint16 *destreg,*srcreg;\r | |
1396 | uint16 srcoffset;\r | |
1397 | uint16 srcval;\r | |
1398 | FETCH_DECODE_MODRM(m,mod,rh,rl);\r | |
1399 | switch (mod)\r | |
1400 | {\r | |
1401 | case 0:\r | |
1402 | destreg = DECODE_RM_WORD_REGISTER(m,rh);\r | |
1403 | srcoffset=decode_rm00_address(m,rl);\r | |
1404 | srcval = fetch_data_word(m,srcoffset);\r | |
1405 | *destreg = xor_word(m, *destreg, srcval);\r | |
1406 | break;\r | |
1407 | case 1:\r | |
1408 | destreg = DECODE_RM_WORD_REGISTER(m,rh);\r | |
1409 | srcoffset=decode_rm01_address(m,rl);\r | |
1410 | srcval = fetch_data_word(m,srcoffset);\r | |
1411 | *destreg = xor_word(m, *destreg, srcval);\r | |
1412 | break;\r | |
1413 | case 2:\r | |
1414 | destreg = DECODE_RM_WORD_REGISTER(m,rh);\r | |
1415 | srcoffset=decode_rm10_address(m,rl);\r | |
1416 | srcval = fetch_data_word(m,srcoffset);\r | |
1417 | *destreg = xor_word(m, *destreg, srcval);\r | |
1418 | break;\r | |
1419 | case 3: /* register to register */\r | |
1420 | destreg = DECODE_RM_WORD_REGISTER(m,rh);\r | |
1421 | srcreg = DECODE_RM_WORD_REGISTER(m,rl);\r | |
1422 | *destreg = xor_word(m, *destreg, *srcreg);\r | |
1423 | break;\r | |
1424 | }\r | |
1425 | DECODE_CLEAR_SEGOVR(m);\r | |
1426 | }\r | |
1427 | \r | |
1428 | /*opcode=0x34*/\r | |
1429 | static void i86op_xor_byte_AL_IMM(PC_ENV *m)\r | |
1430 | {\r | |
1431 | uint8 srcval;\r | |
1432 | srcval = fetch_byte_imm(m);\r | |
1433 | m->R_AL = xor_byte(m, m->R_AL, srcval);\r | |
1434 | DECODE_CLEAR_SEGOVR(m);\r | |
1435 | }\r | |
1436 | \r | |
1437 | /*opcode=0x35*/\r | |
1438 | static void i86op_xor_word_AX_IMM(PC_ENV *m)\r | |
1439 | {\r | |
1440 | uint16 srcval;\r | |
1441 | srcval = fetch_word_imm(m);\r | |
1442 | m->R_AX = xor_word(m, m->R_AX, srcval);\r | |
1443 | DECODE_CLEAR_SEGOVR(m);\r | |
1444 | }\r | |
1445 | \r | |
1446 | /*opcode=0x36*/\r | |
1447 | static void i86op_segovr_SS(PC_ENV *m)\r | |
1448 | {\r | |
1449 | m->sysmode |= SYSMODE_SEGOVR_SS;\r | |
1450 | /* no DECODE_CLEAR_SEGOVER ! */\r | |
1451 | }\r | |
1452 | \r | |
1453 | /*opcode=0x37*/\r | |
1454 | static void i86op_aaa(PC_ENV *m)\r | |
1455 | {\r | |
1456 | if ( (m->R_AL & 0xf) > 0x9 || ACCESS_FLAG(m,F_AF))\r | |
1457 | {\r | |
1458 | m->R_AL += 0x6;\r | |
1459 | m->R_AH += 1;\r | |
1460 | SET_FLAG(m, F_AF);\r | |
1461 | SET_FLAG(m, F_CF);\r | |
1462 | }\r | |
1463 | else\r | |
1464 | {\r | |
1465 | CLEAR_FLAG(m, F_CF);\r | |
1466 | CLEAR_FLAG(m, F_AF);\r | |
1467 | }\r | |
1468 | m->R_AL &= 0xf;\r | |
1469 | DECODE_CLEAR_SEGOVR(m);\r | |
1470 | }\r | |
1471 | \r | |
1472 | /*opcode=0x38*/\r | |
1473 | static void i86op_cmp_byte_RM_R(PC_ENV *m)\r | |
1474 | {\r | |
1475 | uint16 mod,rl,rh;\r | |
1476 | uint8 *destreg,*srcreg;\r | |
1477 | uint16 destoffset;\r | |
1478 | uint8 destval;\r | |
1479 | FETCH_DECODE_MODRM(m,mod,rh,rl);\r | |
1480 | switch (mod)\r | |
1481 | {\r | |
1482 | case 0:\r | |
1483 | destoffset=decode_rm00_address(m,rl);\r | |
1484 | destval = fetch_data_byte(m,destoffset);\r | |
1485 | srcreg = DECODE_RM_BYTE_REGISTER(m,rh);\r | |
1486 | cmp_byte(m, destval, *srcreg);\r | |
1487 | break;\r | |
1488 | case 1:\r | |
1489 | destoffset=decode_rm01_address(m,rl);\r | |
1490 | destval = fetch_data_byte(m,destoffset);\r | |
1491 | srcreg = DECODE_RM_BYTE_REGISTER(m,rh);\r | |
1492 | cmp_byte(m, destval, *srcreg);\r | |
1493 | break;\r | |
1494 | case 2:\r | |
1495 | destoffset=decode_rm10_address(m,rl);\r | |
1496 | destval = fetch_data_byte(m,destoffset);\r | |
1497 | srcreg = DECODE_RM_BYTE_REGISTER(m,rh);\r | |
1498 | cmp_byte(m, destval, *srcreg);\r | |
1499 | break;\r | |
1500 | case 3: /* register to register */\r | |
1501 | destreg = DECODE_RM_BYTE_REGISTER(m,rl);\r | |
1502 | srcreg = DECODE_RM_BYTE_REGISTER(m,rh);\r | |
1503 | cmp_byte(m, *destreg, *srcreg);\r | |
1504 | break;\r | |
1505 | }\r | |
1506 | DECODE_CLEAR_SEGOVR(m);\r | |
1507 | }\r | |
1508 | \r | |
1509 | /*opcode=0x39*/\r | |
1510 | static void i86op_cmp_word_RM_R(PC_ENV *m)\r | |
1511 | {\r | |
1512 | uint16 mod,rl,rh;\r | |
1513 | uint16 *destreg,*srcreg;\r | |
1514 | uint16 destoffset;\r | |
1515 | uint16 destval;\r | |
1516 | FETCH_DECODE_MODRM(m,mod,rh,rl);\r | |
1517 | switch (mod)\r | |
1518 | {\r | |
1519 | case 0:\r | |
1520 | destoffset=decode_rm00_address(m,rl);\r | |
1521 | destval = fetch_data_word(m,destoffset);\r | |
1522 | srcreg = DECODE_RM_WORD_REGISTER(m,rh);\r | |
1523 | cmp_word(m, destval, *srcreg);\r | |
1524 | break;\r | |
1525 | case 1:\r | |
1526 | destoffset=decode_rm01_address(m,rl);\r | |
1527 | destval = fetch_data_word(m,destoffset);\r | |
1528 | srcreg = DECODE_RM_WORD_REGISTER(m,rh);\r | |
1529 | cmp_word(m, destval, *srcreg);\r | |
1530 | break;\r | |
1531 | case 2:\r | |
1532 | destoffset=decode_rm10_address(m,rl);\r | |
1533 | destval = fetch_data_word(m,destoffset);\r | |
1534 | srcreg = DECODE_RM_WORD_REGISTER(m,rh);\r | |
1535 | cmp_word(m, destval, *srcreg);\r | |
1536 | break;\r | |
1537 | case 3: /* register to register */\r | |
1538 | destreg = DECODE_RM_WORD_REGISTER(m,rl);\r | |
1539 | srcreg = DECODE_RM_WORD_REGISTER(m,rh);\r | |
1540 | cmp_word(m, *destreg, *srcreg);\r | |
1541 | break;\r | |
1542 | }\r | |
1543 | DECODE_CLEAR_SEGOVR(m);\r | |
1544 | }\r | |
1545 | \r | |
1546 | /*opcode=0x3a*/\r | |
1547 | static void i86op_cmp_byte_R_RM(PC_ENV *m)\r | |
1548 | {\r | |
1549 | uint16 mod,rl,rh;\r | |
1550 | uint8 *destreg,*srcreg;\r | |
1551 | uint16 srcoffset;\r | |
1552 | uint8 srcval;\r | |
1553 | FETCH_DECODE_MODRM(m,mod,rh,rl);\r | |
1554 | switch (mod)\r | |
1555 | {\r | |
1556 | case 0:\r | |
1557 | destreg = DECODE_RM_BYTE_REGISTER(m,rh);\r | |
1558 | srcoffset=decode_rm00_address(m,rl);\r | |
1559 | srcval = fetch_data_byte(m,srcoffset);\r | |
1560 | cmp_byte(m, *destreg, srcval);\r | |
1561 | break;\r | |
1562 | case 1:\r | |
1563 | destreg = DECODE_RM_BYTE_REGISTER(m,rh);\r | |
1564 | srcoffset=decode_rm01_address(m,rl);\r | |
1565 | srcval = fetch_data_byte(m,srcoffset);\r | |
1566 | cmp_byte(m, *destreg, srcval);\r | |
1567 | break;\r | |
1568 | case 2:\r | |
1569 | destreg = DECODE_RM_BYTE_REGISTER(m,rh);\r | |
1570 | srcoffset=decode_rm10_address(m,rl);\r | |
1571 | srcval = fetch_data_byte(m,srcoffset);\r | |
1572 | cmp_byte(m, * destreg, srcval);\r | |
1573 | break;\r | |
1574 | case 3: /* register to register */\r | |
1575 | destreg = DECODE_RM_BYTE_REGISTER(m,rh);\r | |
1576 | srcreg = DECODE_RM_BYTE_REGISTER(m,rl);\r | |
1577 | cmp_byte(m, *destreg, *srcreg);\r | |
1578 | break;\r | |
1579 | }\r | |
1580 | DECODE_CLEAR_SEGOVR(m);\r | |
1581 | }\r | |
1582 | \r | |
1583 | /*opcode=0x3b*/\r | |
1584 | static void i86op_cmp_word_R_RM(PC_ENV *m)\r | |
1585 | {\r | |
1586 | uint16 mod,rl,rh;\r | |
1587 | uint16 *destreg,*srcreg;\r | |
1588 | uint16 srcoffset;\r | |
1589 | uint16 srcval;\r | |
1590 | FETCH_DECODE_MODRM(m,mod,rh,rl);\r | |
1591 | switch (mod)\r | |
1592 | {\r | |
1593 | case 0:\r | |
1594 | destreg = DECODE_RM_WORD_REGISTER(m,rh);\r | |
1595 | srcoffset=decode_rm00_address(m,rl);\r | |
1596 | srcval = fetch_data_word(m,srcoffset);\r | |
1597 | cmp_word(m, *destreg, srcval);\r | |
1598 | break;\r | |
1599 | case 1:\r | |
1600 | destreg = DECODE_RM_WORD_REGISTER(m,rh);\r | |
1601 | srcoffset=decode_rm01_address(m,rl);\r | |
1602 | srcval = fetch_data_word(m,srcoffset);\r | |
1603 | cmp_word(m, *destreg, srcval);\r | |
1604 | break;\r | |
1605 | case 2:\r | |
1606 | destreg = DECODE_RM_WORD_REGISTER(m,rh);\r | |
1607 | srcoffset=decode_rm10_address(m,rl);\r | |
1608 | srcval = fetch_data_word(m,srcoffset);\r | |
1609 | cmp_word(m, *destreg, srcval);\r | |
1610 | break;\r | |
1611 | case 3: /* register to register */\r | |
1612 | destreg = DECODE_RM_WORD_REGISTER(m,rh);\r | |
1613 | srcreg = DECODE_RM_WORD_REGISTER(m,rl);\r | |
1614 | cmp_word(m, *destreg, *srcreg);\r | |
1615 | break;\r | |
1616 | }\r | |
1617 | DECODE_CLEAR_SEGOVR(m);\r | |
1618 | }\r | |
1619 | \r | |
1620 | /*opcode=0x3c*/\r | |
1621 | static void i86op_cmp_byte_AL_IMM(PC_ENV *m)\r | |
1622 | {\r | |
1623 | uint8 srcval;\r | |
1624 | srcval = fetch_byte_imm(m);\r | |
1625 | cmp_byte(m, m->R_AL, srcval);\r | |
1626 | DECODE_CLEAR_SEGOVR(m);\r | |
1627 | }\r | |
1628 | \r | |
1629 | /*opcode=0x3d*/\r | |
1630 | static void i86op_cmp_word_AX_IMM(PC_ENV *m)\r | |
1631 | {\r | |
1632 | uint16 srcval;\r | |
1633 | srcval = fetch_word_imm(m);\r | |
1634 | cmp_word(m, m->R_AX, srcval);\r | |
1635 | DECODE_CLEAR_SEGOVR(m);\r | |
1636 | }\r | |
1637 | \r | |
1638 | /*opcode=0x3e*/\r | |
1639 | static void i86op_segovr_DS(PC_ENV *m)\r | |
1640 | {\r | |
1641 | m->sysmode |= SYSMODE_SEGOVR_DS;\r | |
1642 | /* NO DECODE_CLEAR_SEGOVR! */\r | |
1643 | }\r | |
1644 | \r | |
1645 | /*opcode=0x3f*/\r | |
1646 | static void i86op_aas(PC_ENV *m)\r | |
1647 | {\r | |
1648 | /* ???? Check out the subtraction here. Will this ?ever? cause\r | |
1649 | the contents of R_AL or R_AH to be affected incorrectly since\r | |
1650 | they are being subtracted from *and* are unsigned.\r | |
1651 | Should put an assertion in here.\r | |
1652 | */\r | |
1653 | if ( (m->R_AL & 0xf) > 0x9 || ACCESS_FLAG(m,F_AF))\r | |
1654 | {\r | |
1655 | m->R_AL -= 0x6;\r | |
1656 | m->R_AH -= 1;\r | |
1657 | SET_FLAG(m, F_AF);\r | |
1658 | SET_FLAG(m, F_CF);\r | |
1659 | }\r | |
1660 | else\r | |
1661 | {\r | |
1662 | CLEAR_FLAG(m, F_CF);\r | |
1663 | CLEAR_FLAG(m, F_AF);\r | |
1664 | }\r | |
1665 | m->R_AL &= 0xf;\r | |
1666 | DECODE_CLEAR_SEGOVR(m);\r | |
1667 | }\r | |
1668 | \r | |
1669 | /*opcode=0x40*/\r | |
1670 | static void i86op_inc_AX(PC_ENV *m)\r | |
1671 | {\r | |
1672 | m->R_AX = inc_word(m,m->R_AX);\r | |
1673 | DECODE_CLEAR_SEGOVR(m);\r | |
1674 | }\r | |
1675 | \r | |
1676 | /*opcode=0x41*/\r | |
1677 | static void i86op_inc_CX(PC_ENV *m)\r | |
1678 | {\r | |
1679 | m->R_CX = inc_word(m,m->R_CX);\r | |
1680 | DECODE_CLEAR_SEGOVR(m);\r | |
1681 | }\r | |
1682 | \r | |
1683 | /*opcode=0x42*/\r | |
1684 | static void i86op_inc_DX(PC_ENV *m)\r | |
1685 | {\r | |
1686 | m->R_DX = inc_word(m,m->R_DX);\r | |
1687 | DECODE_CLEAR_SEGOVR(m);\r | |
1688 | }\r | |
1689 | \r | |
1690 | /*opcode=0x43*/\r | |
1691 | static void i86op_inc_BX(PC_ENV *m)\r | |
1692 | {\r | |
1693 | m->R_BX = inc_word(m,m->R_BX);\r | |
1694 | DECODE_CLEAR_SEGOVR(m);\r | |
1695 | }\r | |
1696 | \r | |
1697 | /*opcode=0x44*/\r | |
1698 | static void i86op_inc_SP(PC_ENV *m)\r | |
1699 | {\r | |
1700 | m->R_SP = inc_word(m,m->R_SP);\r | |
1701 | DECODE_CLEAR_SEGOVR(m);\r | |
1702 | }\r | |
1703 | \r | |
1704 | /*opcode=0x45*/\r | |
1705 | static void i86op_inc_BP(PC_ENV *m)\r | |
1706 | {\r | |
1707 | m->R_BP = inc_word(m,m->R_BP);\r | |
1708 | DECODE_CLEAR_SEGOVR(m);\r | |
1709 | }\r | |
1710 | \r | |
1711 | /*opcode=0x46*/\r | |
1712 | static void i86op_inc_SI(PC_ENV *m)\r | |
1713 | {\r | |
1714 | m->R_SI = inc_word(m,m->R_SI);\r | |
1715 | DECODE_CLEAR_SEGOVR(m);\r | |
1716 | }\r | |
1717 | \r | |
1718 | /*opcode=0x47*/\r | |
1719 | static void i86op_inc_DI(PC_ENV *m)\r | |
1720 | {\r | |
1721 | m->R_DI = inc_word(m,m->R_DI);\r | |
1722 | DECODE_CLEAR_SEGOVR(m);\r | |
1723 | }\r | |
1724 | \r | |
1725 | /*opcode=0x48*/\r | |
1726 | static void i86op_dec_AX(PC_ENV *m)\r | |
1727 | {\r | |
1728 | m->R_AX = dec_word(m,m->R_AX);\r | |
1729 | DECODE_CLEAR_SEGOVR(m);\r | |
1730 | }\r | |
1731 | \r | |
1732 | /*opcode=0x49*/\r | |
1733 | static void i86op_dec_CX(PC_ENV *m)\r | |
1734 | {\r | |
1735 | m->R_CX = dec_word(m,m->R_CX);\r | |
1736 | DECODE_CLEAR_SEGOVR(m);\r | |
1737 | }\r | |
1738 | \r | |
1739 | /*opcode=0x4a*/\r | |
1740 | static void i86op_dec_DX(PC_ENV *m)\r | |
1741 | {\r | |
1742 | m->R_DX = dec_word(m,m->R_DX);\r | |
1743 | DECODE_CLEAR_SEGOVR(m);\r | |
1744 | }\r | |
1745 | \r | |
1746 | /*opcode=0x4b*/\r | |
1747 | static void i86op_dec_BX(PC_ENV *m)\r | |
1748 | {\r | |
1749 | m->R_BX = dec_word(m,m->R_BX);\r | |
1750 | DECODE_CLEAR_SEGOVR(m);\r | |
1751 | }\r | |
1752 | \r | |
1753 | /*opcode=0x4c*/\r | |
1754 | static void i86op_dec_SP(PC_ENV *m)\r | |
1755 | {\r | |
1756 | m->R_SP = dec_word(m,m->R_SP);\r | |
1757 | DECODE_CLEAR_SEGOVR(m);\r | |
1758 | }\r | |
1759 | \r | |
1760 | /*opcode=0x4d*/\r | |
1761 | static void i86op_dec_BP(PC_ENV *m)\r | |
1762 | {\r | |
1763 | m->R_BP = dec_word(m,m->R_BP);\r | |
1764 | DECODE_CLEAR_SEGOVR(m);\r | |
1765 | }\r | |
1766 | \r | |
1767 | /*opcode=0x4e*/\r | |
1768 | static void i86op_dec_SI(PC_ENV *m)\r | |
1769 | {\r | |
1770 | m->R_SI = dec_word(m,m->R_SI);\r | |
1771 | DECODE_CLEAR_SEGOVR(m);\r | |
1772 | }\r | |
1773 | \r | |
1774 | /*opcode=0x4f*/\r | |
1775 | static void i86op_dec_DI(PC_ENV *m)\r | |
1776 | {\r | |
1777 | m->R_DI = dec_word(m,m->R_DI);\r | |
1778 | DECODE_CLEAR_SEGOVR(m);\r | |
1779 | }\r | |
1780 | \r | |
1781 | /*opcode=0x50*/\r | |
1782 | static void i86op_push_AX(PC_ENV *m)\r | |
1783 | {\r | |
1784 | push_word(m,m->R_AX);\r | |
1785 | DECODE_CLEAR_SEGOVR(m);\r | |
1786 | }\r | |
1787 | \r | |
1788 | /*opcode=0x51*/\r | |
1789 | static void i86op_push_CX(PC_ENV *m)\r | |
1790 | {\r | |
1791 | push_word(m,m->R_CX);\r | |
1792 | DECODE_CLEAR_SEGOVR(m);\r | |
1793 | }\r | |
1794 | \r | |
1795 | /*opcode=0x52*/\r | |
1796 | static void i86op_push_DX(PC_ENV *m)\r | |
1797 | {\r | |
1798 | push_word(m,m->R_DX);\r | |
1799 | DECODE_CLEAR_SEGOVR(m);\r | |
1800 | }\r | |
1801 | \r | |
1802 | /*opcode=0x53*/\r | |
1803 | static void i86op_push_BX(PC_ENV *m)\r | |
1804 | {\r | |
1805 | push_word(m,m->R_BX);\r | |
1806 | DECODE_CLEAR_SEGOVR(m);\r | |
1807 | }\r | |
1808 | \r | |
1809 | /*opcode=0x54*/\r | |
1810 | static void i86op_push_SP(PC_ENV *m)\r | |
1811 | {\r | |
1812 | /* .... Note this weirdness: One book I have access to\r | |
1813 | claims that the value pushed here is actually sp-2. I.e.\r | |
1814 | it decrements the stackpointer, and then pushes it. The 286\r | |
1815 | I have does it this way. Changing this causes many problems.*/\r | |
1816 | /* changed to push SP-2, since this *IS* how a 8088 does this */\r | |
1817 | push_word(m,m->R_SP-2);\r | |
1818 | DECODE_CLEAR_SEGOVR(m);\r | |
1819 | }\r | |
1820 | \r | |
1821 | /*opcode=0x55*/\r | |
1822 | static void i86op_push_BP(PC_ENV *m)\r | |
1823 | {\r | |
1824 | push_word(m,m->R_BP);\r | |
1825 | DECODE_CLEAR_SEGOVR(m);\r | |
1826 | }\r | |
1827 | \r | |
1828 | /*opcode=0x56*/\r | |
1829 | static void i86op_push_SI(PC_ENV *m)\r | |
1830 | {\r | |
1831 | push_word(m,m->R_SI);\r | |
1832 | DECODE_CLEAR_SEGOVR(m);\r | |
1833 | }\r | |
1834 | \r | |
1835 | /*opcode=0x57*/\r | |
1836 | static void i86op_push_DI(PC_ENV *m)\r | |
1837 | {\r | |
1838 | push_word(m,m->R_DI);\r | |
1839 | DECODE_CLEAR_SEGOVR(m);\r | |
1840 | }\r | |
1841 | \r | |
1842 | /*opcode=0x58*/\r | |
1843 | static void i86op_pop_AX(PC_ENV *m)\r | |
1844 | {\r | |
1845 | m->R_AX = pop_word(m);\r | |
1846 | DECODE_CLEAR_SEGOVR(m);\r | |
1847 | }\r | |
1848 | \r | |
1849 | /*opcode=0x59*/\r | |
1850 | static void i86op_pop_CX(PC_ENV *m)\r | |
1851 | {\r | |
1852 | m->R_CX = pop_word(m);\r | |
1853 | DECODE_CLEAR_SEGOVR(m);\r | |
1854 | }\r | |
1855 | \r | |
1856 | /*opcode=0x5a*/\r | |
1857 | static void i86op_pop_DX(PC_ENV *m)\r | |
1858 | {\r | |
1859 | m->R_DX = pop_word(m);\r | |
1860 | DECODE_CLEAR_SEGOVR(m);\r | |
1861 | }\r | |
1862 | \r | |
1863 | /*opcode=0x5b*/\r | |
1864 | static void i86op_pop_BX(PC_ENV *m)\r | |
1865 | {\r | |
1866 | m->R_BX = pop_word(m);\r | |
1867 | DECODE_CLEAR_SEGOVR(m);\r | |
1868 | }\r | |
1869 | \r | |
1870 | /*opcode=0x5c*/\r | |
1871 | static void i86op_pop_SP(PC_ENV *m)\r | |
1872 | {\r | |
1873 | m->R_SP = pop_word(m);\r | |
1874 | DECODE_CLEAR_SEGOVR(m);\r | |
1875 | }\r | |
1876 | \r | |
1877 | /*opcode=0x5d*/\r | |
1878 | static void i86op_pop_BP(PC_ENV *m)\r | |
1879 | {\r | |
1880 | m->R_BP = pop_word(m);\r | |
1881 | DECODE_CLEAR_SEGOVR(m);\r | |
1882 | }\r | |
1883 | \r | |
1884 | /*opcode=0x5e*/\r | |
1885 | static void i86op_pop_SI(PC_ENV *m)\r | |
1886 | {\r | |
1887 | m->R_SI = pop_word(m);\r | |
1888 | DECODE_CLEAR_SEGOVR(m);\r | |
1889 | }\r | |
1890 | \r | |
1891 | /*opcode=0x5f*/\r | |
1892 | static void i86op_pop_DI(PC_ENV *m)\r | |
1893 | {\r | |
1894 | m->R_DI = pop_word(m);\r | |
1895 | DECODE_CLEAR_SEGOVR(m);\r | |
1896 | }\r | |
1897 | \r | |
1898 | /*opcode=0x60 ILLEGAL OP, calls i86op_illegal_op() */\r | |
1899 | /*opcode=0x61 ILLEGAL OP, calls i86op_illegal_op() */\r | |
1900 | /*opcode=0x62 ILLEGAL OP, calls i86op_illegal_op() */\r | |
1901 | /*opcode=0x63 ILLEGAL OP, calls i86op_illegal_op() */\r | |
1902 | /*opcode=0x64 ILLEGAL OP, calls i86op_illegal_op() */\r | |
1903 | /*opcode=0x65 ILLEGAL OP, calls i86op_illegal_op() */\r | |
1904 | /*opcode=0x66 ILLEGAL OP, calls i86op_illegal_op() */\r | |
1905 | /*opcode=0x67 ILLEGAL OP, calls i86op_illegal_op() */\r | |
1906 | /*opcode=0x68 ILLEGAL OP, calls i86op_illegal_op() */\r | |
1907 | /*opcode=0x69 ILLEGAL OP, calls i86op_illegal_op() */\r | |
1908 | /*opcode=0x6a ILLEGAL OP, calls i86op_illegal_op() */\r | |
1909 | /*opcode=0x6b ILLEGAL OP, calls i86op_illegal_op() */\r | |
1910 | /*opcode=0x6c ILLEGAL OP, calls i86op_illegal_op() */\r | |
1911 | /*opcode=0x6d ILLEGAL OP, calls i86op_illegal_op() */\r | |
1912 | /*opcode=0x6e ILLEGAL OP, calls i86op_illegal_op() */\r | |
1913 | /*opcode=0x6f ILLEGAL OP, calls i86op_illegal_op() */\r | |
1914 | \r | |
1915 | /*opcode=0x70*/\r | |
1916 | static void i86op_jump_near_O(PC_ENV *m)\r | |
1917 | {\r | |
1918 | int8 offset;\r | |
1919 | uint16 target;\r | |
1920 | /* jump to byte offset if overflow flag is set */\r | |
1921 | offset = (int8) fetch_byte_imm(m);\r | |
1922 | target = (int16)(m->R_IP) + offset;\r | |
1923 | if (ACCESS_FLAG(m,F_OF))\r | |
1924 | m->R_IP = target;\r | |
1925 | DECODE_CLEAR_SEGOVR(m);\r | |
1926 | }\r | |
1927 | \r | |
1928 | /*opcode=0x71*/\r | |
1929 | static void i86op_jump_near_NO(PC_ENV *m)\r | |
1930 | {\r | |
1931 | int8 offset;\r | |
1932 | uint16 target;\r | |
1933 | /* jump to byte offset if overflow is not set */\r | |
1934 | offset = (int8) fetch_byte_imm(m);\r | |
1935 | target = (int16)(m->R_IP) + offset;\r | |
1936 | if (!ACCESS_FLAG(m,F_OF))\r | |
1937 | m->R_IP = target;\r | |
1938 | DECODE_CLEAR_SEGOVR(m);\r | |
1939 | }\r | |
1940 | \r | |
1941 | /*opcode=0x72*/\r | |
1942 | static void i86op_jump_near_B(PC_ENV *m)\r | |
1943 | {\r | |
1944 | int8 offset;\r | |
1945 | uint16 target;\r | |
1946 | /* jump to byte offset if carry flag is set. */\r | |
1947 | offset = (int8)fetch_byte_imm(m); /* sign extended ??? */\r | |
1948 | target = (int16)(m->R_IP) + offset;\r | |
1949 | if (ACCESS_FLAG(m, F_CF))\r | |
1950 | m->R_IP = target;\r | |
1951 | DECODE_CLEAR_SEGOVR(m);\r | |
1952 | }\r | |
1953 | \r | |
1954 | /*opcode=0x73*/\r | |
1955 | static void i86op_jump_near_NB(PC_ENV *m)\r | |
1956 | {\r | |
1957 | int8 offset;\r | |
1958 | uint16 target;\r | |
1959 | /* jump to byte offset if carry flag is clear. */\r | |
1960 | offset = (int8)fetch_byte_imm(m); /* sign extended ??? */\r | |
1961 | target = (int16)(m->R_IP) + offset;\r | |
1962 | if (!ACCESS_FLAG(m,F_CF))\r | |
1963 | m->R_IP = target;\r | |
1964 | DECODE_CLEAR_SEGOVR(m);\r | |
1965 | }\r | |
1966 | \r | |
1967 | /*opcode=0x74*/\r | |
1968 | static void i86op_jump_near_Z(PC_ENV *m)\r | |
1969 | {\r | |
1970 | int8 offset;\r | |
1971 | uint16 target;\r | |
1972 | /* jump to byte offset if zero flag is set. */\r | |
1973 | offset = (int8)fetch_byte_imm(m);\r | |
1974 | target = (int16)(m->R_IP) + offset;\r | |
1975 | if (ACCESS_FLAG(m, F_ZF))\r | |
1976 | m->R_IP = target;\r | |
1977 | DECODE_CLEAR_SEGOVR(m);\r | |
1978 | }\r | |
1979 | \r | |
1980 | /*opcode=0x75*/\r | |
1981 | static void i86op_jump_near_NZ(PC_ENV *m)\r | |
1982 | {\r | |
1983 | int8 offset;\r | |
1984 | uint16 target;\r | |
1985 | /* jump to byte offset if zero flag is clear. */\r | |
1986 | offset = (int8)fetch_byte_imm(m);\r | |
1987 | target = (int16)(m->R_IP) + offset;\r | |
1988 | if (!ACCESS_FLAG(m, F_ZF))\r | |
1989 | m->R_IP = target;\r | |
1990 | DECODE_CLEAR_SEGOVR(m);\r | |
1991 | }\r | |
1992 | \r | |
1993 | /*opcode=0x76*/\r | |
1994 | static void i86op_jump_near_BE(PC_ENV *m)\r | |
1995 | {\r | |
1996 | int8 offset;\r | |
1997 | uint16 target;\r | |
1998 | /* jump to byte offset if carry flag is set or if the zero\r | |
1999 | flag is set. */\r | |
2000 | offset = (int8)fetch_byte_imm(m);\r | |
2001 | target = (int16)(m->R_IP) + offset;\r | |
2002 | if (ACCESS_FLAG(m,F_CF) || ACCESS_FLAG(m,F_ZF))\r | |
2003 | m->R_IP = target;\r | |
2004 | DECODE_CLEAR_SEGOVR(m);\r | |
2005 | }\r | |
2006 | \r | |
2007 | /*opcode=0x77*/\r | |
2008 | static void i86op_jump_near_NBE(PC_ENV *m)\r | |
2009 | {\r | |
2010 | int8 offset;\r | |
2011 | uint16 target;\r | |
2012 | /* jump to byte offset if carry flag is clear and if the zero\r | |
2013 | flag is clear */\r | |
2014 | offset = (int8)fetch_byte_imm(m);\r | |
2015 | target = (int16)(m->R_IP) + offset;\r | |
2016 | if (!(ACCESS_FLAG(m,F_CF)||ACCESS_FLAG(m,F_ZF)))\r | |
2017 | m->R_IP = target;\r | |
2018 | DECODE_CLEAR_SEGOVR(m);\r | |
2019 | }\r | |
2020 | \r | |
2021 | /*opcode=0x78*/\r | |
2022 | static void i86op_jump_near_S(PC_ENV *m)\r | |
2023 | {\r | |
2024 | int8 offset;\r | |
2025 | uint16 target;\r | |
2026 | /* jump to byte offset if sign flag is set */\r | |
2027 | offset = (int8)fetch_byte_imm(m);\r | |
2028 | target = (int16)(m->R_IP) + offset;\r | |
2029 | if (ACCESS_FLAG(m,F_SF))\r | |
2030 | m->R_IP = target;\r | |
2031 | DECODE_CLEAR_SEGOVR(m);\r | |
2032 | }\r | |
2033 | \r | |
2034 | /*opcode=0x79*/\r | |
2035 | static void i86op_jump_near_NS(PC_ENV *m)\r | |
2036 | {\r | |
2037 | int8 offset;\r | |
2038 | uint16 target;\r | |
2039 | /* jump to byte offset if sign flag is clear */\r | |
2040 | offset = (int8)fetch_byte_imm(m);\r | |
2041 | target = (int16)(m->R_IP) + offset;\r | |
2042 | if (!ACCESS_FLAG(m,F_SF))\r | |
2043 | m->R_IP = target;\r | |
2044 | DECODE_CLEAR_SEGOVR(m);\r | |
2045 | }\r | |
2046 | \r | |
2047 | /*opcode=0x7a*/\r | |
2048 | static void i86op_jump_near_P(PC_ENV *m)\r | |
2049 | {\r | |
2050 | int8 offset;\r | |
2051 | uint16 target;\r | |
2052 | /* jump to byte offset if parity flag is set (even parity) */\r | |
2053 | offset = (int8)fetch_byte_imm(m);\r | |
2054 | target = (int16)(m->R_IP) + offset;\r | |
2055 | if (ACCESS_FLAG(m, F_PF))\r | |
2056 | m->R_IP = target;\r | |
2057 | DECODE_CLEAR_SEGOVR(m);\r | |
2058 | }\r | |
2059 | \r | |
2060 | /*opcode=0x7b*/\r | |
2061 | static void i86op_jump_near_NP(PC_ENV *m)\r | |
2062 | {\r | |
2063 | int8 offset;\r | |
2064 | uint16 target;\r | |
2065 | /* jump to byte offset if parity flag is clear (odd parity) */\r | |
2066 | offset = (int8)fetch_byte_imm(m);\r | |
2067 | target = (int16)(m->R_IP) + offset;\r | |
2068 | if (!ACCESS_FLAG(m, F_PF))\r | |
2069 | m->R_IP = target;\r | |
2070 | DECODE_CLEAR_SEGOVR(m);\r | |
2071 | }\r | |
2072 | \r | |
2073 | /* JHH fixed till here... */\r | |
2074 | \r | |
2075 | /*opcode=0x7c*/\r | |
2076 | static void i86op_jump_near_L(PC_ENV *m)\r | |
2077 | {\r | |
2078 | int8 offset;\r | |
2079 | uint16 target;\r | |
2080 | int sf,of;\r | |
2081 | /* jump to byte offset if sign flag not equal to overflow flag. */\r | |
2082 | offset = (int8)fetch_byte_imm(m);\r | |
2083 | target = (int16)(m->R_IP) + offset;\r | |
2084 | /* note:\r | |
2085 | * this is the simplest expression i could think of which\r | |
2086 | * expresses SF != OF. m->R_FLG&F_SF either equals x80 or x00.\r | |
2087 | * Similarly m->R_FLG&F_OF either equals x800 or x000.\r | |
2088 | * The former shifted right by 7 puts a 1 or 0 in bit 0.\r | |
2089 | * The latter shifter right by 11 puts a 1 or 0 in bit 0.\r | |
2090 | * if the two expressions are the same, i.e. equal, then\r | |
2091 | * a zero results from the xor. If they are not equal,\r | |
2092 | * then a 1 results, and the jump is taken.\r | |
2093 | */\r | |
2094 | sf = ACCESS_FLAG(m,F_SF) != 0;\r | |
2095 | of = ACCESS_FLAG(m,F_OF) != 0;\r | |
2096 | /* was: if ( ((m->R_FLG & F_SF)>>7) ^ ((m->R_FLG & F_OF) >> 11))*/\r | |
2097 | if (sf ^ of)\r | |
2098 | m->R_IP = target;\r | |
2099 | DECODE_CLEAR_SEGOVR(m);\r | |
2100 | }\r | |
2101 | \r | |
2102 | /*opcode=0x7d*/\r | |
2103 | static void i86op_jump_near_NL(PC_ENV *m)\r | |
2104 | {\r | |
2105 | int8 offset;\r | |
2106 | uint16 target;\r | |
2107 | int sf,of;\r | |
2108 | /* jump to byte offset if sign flag not equal to overflow flag. */\r | |
2109 | offset = (int8)fetch_byte_imm(m);\r | |
2110 | target = (int16)(m->R_IP) + offset;\r | |
2111 | sf = ACCESS_FLAG(m,F_SF) != 0;\r | |
2112 | of = ACCESS_FLAG(m,F_OF) != 0;\r | |
2113 | /* note: inverse of above, but using == instead of xor. */\r | |
2114 | /* was: if (((m->R_FLG & F_SF)>>7) == ((m->R_FLG & F_OF) >> 11))*/\r | |
2115 | if (sf == of)\r | |
2116 | m->R_IP = target;\r | |
2117 | DECODE_CLEAR_SEGOVR(m);\r | |
2118 | }\r | |
2119 | \r | |
2120 | /*opcode=0x7e*/\r | |
2121 | static void i86op_jump_near_LE(PC_ENV *m)\r | |
2122 | {\r | |
2123 | int8 offset;\r | |
2124 | uint16 target;\r | |
2125 | int sf,of;\r | |
2126 | /* jump to byte offset if sign flag not equal to overflow flag\r | |
2127 | or the zero flag is set */\r | |
2128 | offset = (int8)fetch_byte_imm(m);\r | |
2129 | target = (int16)(m->R_IP) + offset;\r | |
2130 | sf = ACCESS_FLAG(m,F_SF) != 0;\r | |
2131 | of = ACCESS_FLAG(m,F_OF) != 0;\r | |
2132 | /* note: modification of JL */\r | |
2133 | /* sf != of */\r | |
2134 | /* was: if ((((m->R_FLG & F_SF)>>7) ^ ((m->R_FLG & F_OF) >> 11))\r | |
2135 | || (m->R_FLG & F_ZF) ) */\r | |
2136 | if ( (sf ^ of) || ACCESS_FLAG(m,F_ZF))\r | |
2137 | m->R_IP = target;\r | |
2138 | DECODE_CLEAR_SEGOVR(m);\r | |
2139 | }\r | |
2140 | \r | |
2141 | /*opcode=0x7f*/\r | |
2142 | static void i86op_jump_near_NLE(PC_ENV *m)\r | |
2143 | {\r | |
2144 | int8 offset;\r | |
2145 | uint16 target;\r | |
2146 | int sf,of;\r | |
2147 | /* jump to byte offset if sign flag equal to overflow flag.\r | |
2148 | and the zero flag is clear*/\r | |
2149 | offset = (int8)fetch_byte_imm(m);\r | |
2150 | target = (int16)(m->R_IP) + offset;\r | |
2151 | sf = ACCESS_FLAG(m,F_SF) != 0;\r | |
2152 | of = ACCESS_FLAG(m,F_OF) != 0;\r | |
2153 | \r | |
2154 | /* if (((m->R_FLG & F_SF)>>7) == ((m->R_FLG & F_OF) >> 11)\r | |
2155 | && (!(m->R_FLG & F_ZF))) */\r | |
2156 | if ( ( sf == of ) && !ACCESS_FLAG(m,F_ZF))\r | |
2157 | m->R_IP = target;\r | |
2158 | DECODE_CLEAR_SEGOVR(m);\r | |
2159 | }\r | |
2160 | \r | |
2161 | static uint8 (*opc80_byte_operation[])(PC_ENV *m,uint8 d,uint8 s) =\r | |
2162 | {\r | |
2163 | add_byte,/*00*/\r | |
2164 | or_byte, /*01*/\r | |
2165 | adc_byte,/*02*/\r | |
2166 | sbb_byte,/*03*/\r | |
2167 | and_byte,/*04*/\r | |
2168 | sub_byte,/*05*/\r | |
2169 | xor_byte,/*06*/\r | |
2170 | cmp_byte,/*07*/\r | |
2171 | };\r | |
2172 | \r | |
2173 | /*opcode=0x80*/\r | |
2174 | static void i86op_opc80_byte_RM_IMM(PC_ENV *m)\r | |
2175 | {\r | |
2176 | uint16 mod,rl,rh;\r | |
2177 | uint8 *destreg;\r | |
2178 | uint16 destoffset;\r | |
2179 | uint8 imm;\r | |
2180 | uint8 destval;\r | |
2181 | /* weirdo special case instruction format. Part of the\r | |
2182 | opcode held below in "RH". Doubly nested case would\r | |
2183 | result, except that the decoded instruction\r | |
2184 | */\r | |
2185 | FETCH_DECODE_MODRM(m,mod,rh,rl);\r | |
2186 | /* know operation, decode the mod byte to find the addressing\r | |
2187 | mode. */\r | |
2188 | switch (mod)\r | |
2189 | {\r | |
2190 | case 0:\r | |
2191 | destoffset=decode_rm00_address(m,rl);\r | |
2192 | destval = fetch_data_byte(m,destoffset);\r | |
2193 | imm = fetch_byte_imm(m);\r | |
2194 | destval = (*opc80_byte_operation[rh])(m, destval, imm);\r | |
2195 | if (rh != 7) store_data_byte(m,destoffset,destval);\r | |
2196 | break;\r | |
2197 | case 1:\r | |
2198 | destoffset=decode_rm01_address(m,rl);\r | |
2199 | destval = fetch_data_byte(m,destoffset);\r | |
2200 | imm = fetch_byte_imm(m);\r | |
2201 | destval = (*opc80_byte_operation[rh])(m, destval, imm);\r | |
2202 | if (rh != 7) store_data_byte(m,destoffset,destval);\r | |
2203 | break;\r | |
2204 | case 2:\r | |
2205 | destoffset=decode_rm10_address(m,rl);\r | |
2206 | destval = fetch_data_byte(m,destoffset);\r | |
2207 | imm = fetch_byte_imm(m);\r | |
2208 | destval = (*opc80_byte_operation[rh])(m, destval, imm);\r | |
2209 | if (rh != 7) store_data_byte(m,destoffset,destval);\r | |
2210 | break;\r | |
2211 | case 3: /* register to register */\r | |
2212 | destreg = DECODE_RM_BYTE_REGISTER(m,rl);\r | |
2213 | imm = fetch_byte_imm(m);\r | |
2214 | destval = (*opc80_byte_operation[rh])(m, *destreg, imm);\r | |
2215 | if (rh != 7) *destreg = destval;\r | |
2216 | break;\r | |
2217 | }\r | |
2218 | DECODE_CLEAR_SEGOVR(m);\r | |
2219 | }\r | |
2220 | \r | |
2221 | static uint16 (*opc81_word_operation[])(PC_ENV *m,uint16 d,uint16 s) =\r | |
2222 | { add_word,/*00*/\r | |
2223 | or_word, /*01*/\r | |
2224 | adc_word,/*02*/\r | |
2225 | sbb_word,/*03*/\r | |
2226 | and_word,/*04*/\r | |
2227 | sub_word,/*05*/\r | |
2228 | xor_word,/*06*/\r | |
2229 | cmp_word,/*07*/\r | |
2230 | };\r | |
2231 | \r | |
2232 | /*opcode=0x81*/\r | |
2233 | static void i86op_opc81_word_RM_IMM(PC_ENV *m)\r | |
2234 | {\r | |
2235 | uint16 mod,rl,rh;\r | |
2236 | uint16 *destreg;\r | |
2237 | uint16 destoffset;\r | |
2238 | uint16 imm;\r | |
2239 | uint16 destval;\r | |
2240 | /* weirdo special case instruction format. Part of the\r | |
2241 | opcode held below in "RH". Doubly nested case would\r | |
2242 | result, except that the decoded instruction\r | |
2243 | */\r | |
2244 | FETCH_DECODE_MODRM(m,mod,rh,rl);\r | |
2245 | /* know operation, decode the mod byte to find the addressing\r | |
2246 | mode. */\r | |
2247 | switch (mod)\r | |
2248 | {\r | |
2249 | case 0:\r | |
2250 | destoffset=decode_rm00_address(m,rl);\r | |
2251 | destval = fetch_data_word(m,destoffset);\r | |
2252 | imm = fetch_word_imm(m);\r | |
2253 | destval = (*opc81_word_operation[rh])(m, destval, imm);\r | |
2254 | if (rh != 7) store_data_word(m,destoffset,destval);\r | |
2255 | break;\r | |
2256 | case 1:\r | |
2257 | destoffset=decode_rm01_address(m,rl);\r | |
2258 | destval = fetch_data_word(m,destoffset);\r | |
2259 | imm = fetch_word_imm(m);\r | |
2260 | destval = (*opc81_word_operation[rh])(m, destval, imm);\r | |
2261 | if (rh != 7) store_data_word(m,destoffset,destval);\r | |
2262 | break;\r | |
2263 | case 2:\r | |
2264 | destoffset=decode_rm10_address(m,rl);\r | |
2265 | destval = fetch_data_word(m,destoffset);\r | |
2266 | imm = fetch_word_imm(m);\r | |
2267 | destval = (*opc81_word_operation[rh])(m, destval, imm);\r | |
2268 | if (rh != 7) store_data_word(m,destoffset,destval);\r | |
2269 | break;\r | |
2270 | case 3: /* register to register */\r | |
2271 | destreg = DECODE_RM_WORD_REGISTER(m,rl);\r | |
2272 | imm = fetch_word_imm(m);\r | |
2273 | destval = (*opc81_word_operation[rh])(m, *destreg, imm);\r | |
2274 | if (rh != 7) *destreg = destval;\r | |
2275 | break;\r | |
2276 | }\r | |
2277 | DECODE_CLEAR_SEGOVR(m);\r | |
2278 | }\r | |
2279 | \r | |
2280 | static uint8 (*opc82_byte_operation[])(PC_ENV *m,uint8 s,uint8 d) =\r | |
2281 | {\r | |
2282 | add_byte,/*00*/\r | |
2283 | or_byte, /*01*/ /*YYY UNUSED ????*/\r | |
2284 | adc_byte,/*02*/\r | |
2285 | sbb_byte,/*03*/\r | |
2286 | and_byte,/*04*/ /*YYY UNUSED ????*/\r | |
2287 | sub_byte,/*05*/\r | |
2288 | xor_byte,/*06*/ /*YYY UNUSED ????*/\r | |
2289 | cmp_byte,/*07*/\r | |
2290 | };\r | |
2291 | \r | |
2292 | /*opcode=0x82*/\r | |
2293 | static void i86op_opc82_byte_RM_IMM(PC_ENV *m)\r | |
2294 | {\r | |
2295 | uint16 mod,rl,rh;\r | |
2296 | uint8 *destreg;\r | |
2297 | uint16 destoffset;\r | |
2298 | uint8 imm;\r | |
2299 | uint8 destval;\r | |
2300 | /* weirdo special case instruction format. Part of the\r | |
2301 | opcode held below in "RH". Doubly nested case would\r | |
2302 | result, except that the decoded instruction\r | |
2303 | Similar to opcode 81, except that the immediate byte\r | |
2304 | is sign extended to a word length.\r | |
2305 | */\r | |
2306 | FETCH_DECODE_MODRM(m,mod,rh,rl);\r | |
2307 | /* know operation, decode the mod byte to find the addressing\r | |
2308 | mode. */\r | |
2309 | switch (mod)\r | |
2310 | {\r | |
2311 | case 0:\r | |
2312 | destoffset=decode_rm00_address(m,rl);\r | |
2313 | destval = fetch_data_byte(m,destoffset);\r | |
2314 | imm = fetch_byte_imm(m);\r | |
2315 | destval = (*opc82_byte_operation[rh])(m, destval, imm);\r | |
2316 | if (rh != 7) store_data_byte(m,destoffset,destval);\r | |
2317 | break;\r | |
2318 | case 1:\r | |
2319 | destoffset=decode_rm01_address(m,rl);\r | |
2320 | destval = fetch_data_byte(m,destoffset);\r | |
2321 | imm = fetch_byte_imm(m);\r | |
2322 | destval = (*opc82_byte_operation[rh])(m, destval, imm);\r | |
2323 | if (rh != 7) store_data_byte(m,destoffset,destval);\r | |
2324 | break;\r | |
2325 | case 2:\r | |
2326 | destoffset=decode_rm10_address(m,rl);\r | |
2327 | destval = fetch_data_byte(m,destoffset);\r | |
2328 | imm = fetch_byte_imm(m);\r | |
2329 | destval = (*opc82_byte_operation[rh])(m, destval, imm);\r | |
2330 | if (rh != 7) store_data_byte(m,destoffset,destval);\r | |
2331 | break;\r | |
2332 | case 3: /* register to register */\r | |
2333 | destreg = DECODE_RM_BYTE_REGISTER(m,rl);\r | |
2334 | imm = fetch_byte_imm(m);\r | |
2335 | destval = (*opc82_byte_operation[rh])(m, *destreg, imm);\r | |
2336 | if (rh != 7) *destreg = destval;\r | |
2337 | break;\r | |
2338 | }\r | |
2339 | DECODE_CLEAR_SEGOVR(m);\r | |
2340 | }\r | |
2341 | \r | |
2342 | static uint16 (*opc83_word_operation[])(PC_ENV *m,uint16 s,uint16 d) =\r | |
2343 | {\r | |
2344 | add_word,/*00*/\r | |
2345 | or_word, /*01*/ /*YYY UNUSED ????*/\r | |
2346 | adc_word,/*02*/\r | |
2347 | sbb_word,/*03*/\r | |
2348 | and_word,/*04*/ /*YYY UNUSED ????*/\r | |
2349 | sub_word,/*05*/\r | |
2350 | xor_word,/*06*/ /*YYY UNUSED ????*/\r | |
2351 | cmp_word,/*07*/\r | |
2352 | };\r | |
2353 | \r | |
2354 | /*opcode=0x83*/\r | |
2355 | static void i86op_opc83_word_RM_IMM(PC_ENV *m)\r | |
2356 | {\r | |
2357 | uint16 mod,rl,rh;\r | |
2358 | uint16 *destreg;\r | |
2359 | uint16 destoffset;\r | |
2360 | uint16 imm;\r | |
2361 | uint16 destval;\r | |
2362 | /* weirdo special case instruction format. Part of the\r | |
2363 | opcode held below in "RH". Doubly nested case would\r | |
2364 | result, except that the decoded instruction\r | |
2365 | Similar to opcode 81, except that the immediate byte\r | |
2366 | is sign extended to a word length.\r | |
2367 | */\r | |
2368 | FETCH_DECODE_MODRM(m,mod,rh,rl);\r | |
2369 | /* know operation, decode the mod byte to find the addressing\r | |
2370 | mode. */\r | |
2371 | switch (mod)\r | |
2372 | {\r | |
2373 | case 0:\r | |
2374 | destoffset=decode_rm00_address(m,rl);\r | |
2375 | destval = fetch_data_word(m,destoffset);\r | |
2376 | imm = (int8)fetch_byte_imm(m);\r | |
2377 | destval = (*opc83_word_operation[rh])(m, destval, imm);\r | |
2378 | if (rh != 7) store_data_word(m,destoffset,destval);\r | |
2379 | break;\r | |
2380 | case 1:\r | |
2381 | destoffset=decode_rm01_address(m,rl);\r | |
2382 | destval = fetch_data_word(m,destoffset);\r | |
2383 | imm = (int8)fetch_byte_imm(m);\r | |
2384 | destval = (*opc83_word_operation[rh])(m, destval, imm);\r | |
2385 | if (rh != 7) store_data_word(m,destoffset,destval);\r | |
2386 | break;\r | |
2387 | case 2:\r | |
2388 | destoffset=decode_rm10_address(m,rl);\r | |
2389 | destval = fetch_data_word(m,destoffset);\r | |
2390 | imm = (int8) fetch_byte_imm(m);\r | |
2391 | destval = (*opc83_word_operation[rh])(m, destval, imm);\r | |
2392 | if (rh != 7) store_data_word(m,destoffset,destval);\r | |
2393 | break;\r | |
2394 | case 3: /* register to register */\r | |
2395 | destreg = DECODE_RM_WORD_REGISTER(m,rl);\r | |
2396 | imm = (int8) fetch_byte_imm(m);\r | |
2397 | destval = (*opc83_word_operation[rh])(m, *destreg, imm);\r | |
2398 | if (rh != 7) *destreg = destval;\r | |
2399 | break;\r | |
2400 | }\r | |
2401 | DECODE_CLEAR_SEGOVR(m);\r | |
2402 | }\r | |
2403 | \r | |
2404 | /*opcode=0x84*/\r | |
2405 | static void i86op_test_byte_RM_R(PC_ENV *m)\r | |
2406 | {\r | |
2407 | uint16 mod,rl,rh;\r | |
2408 | uint8 *destreg,*srcreg;\r | |
2409 | uint16 destoffset;\r | |
2410 | uint8 destval;\r | |
2411 | FETCH_DECODE_MODRM(m,mod,rh,rl);\r | |
2412 | switch (mod)\r | |
2413 | {\r | |
2414 | case 0:\r | |
2415 | destoffset=decode_rm00_address(m,rl);\r | |
2416 | destval = fetch_data_byte(m,destoffset);\r | |
2417 | srcreg = DECODE_RM_BYTE_REGISTER(m,rh);\r | |
2418 | test_byte(m, destval, *srcreg);\r | |
2419 | break;\r | |
2420 | case 1:\r | |
2421 | destoffset=decode_rm01_address(m,rl);\r | |
2422 | destval = fetch_data_byte(m,destoffset);\r | |
2423 | srcreg = DECODE_RM_BYTE_REGISTER(m,rh);\r | |
2424 | test_byte(m, destval, *srcreg);\r | |
2425 | break;\r | |
2426 | case 2:\r | |
2427 | destoffset=decode_rm10_address(m,rl);\r | |
2428 | destval = fetch_data_byte(m,destoffset);\r | |
2429 | srcreg = DECODE_RM_BYTE_REGISTER(m,rh);\r | |
2430 | test_byte(m, destval, *srcreg);\r | |
2431 | break;\r | |
2432 | case 3: /* register to register */\r | |
2433 | destreg = DECODE_RM_BYTE_REGISTER(m,rl);\r | |
2434 | srcreg = DECODE_RM_BYTE_REGISTER(m,rh);\r | |
2435 | test_byte(m, *destreg, *srcreg);\r | |
2436 | break;\r | |
2437 | }\r | |
2438 | DECODE_CLEAR_SEGOVR(m);\r | |
2439 | }\r | |
2440 | \r | |
2441 | /*opcode=0x85*/\r | |
2442 | static void i86op_test_word_RM_R(PC_ENV *m)\r | |
2443 | {\r | |
2444 | uint16 mod,rl,rh;\r | |
2445 | uint16 *destreg,*srcreg;\r | |
2446 | uint16 destoffset;\r | |
2447 | uint16 destval;\r | |
2448 | FETCH_DECODE_MODRM(m,mod,rh,rl);\r | |
2449 | switch (mod)\r | |
2450 | {\r | |
2451 | case 0:\r | |
2452 | destoffset=decode_rm00_address(m,rl);\r | |
2453 | destval = fetch_data_word(m,destoffset);\r | |
2454 | srcreg = DECODE_RM_WORD_REGISTER(m,rh);\r | |
2455 | test_word(m, destval, *srcreg);\r | |
2456 | break;\r | |
2457 | case 1:\r | |
2458 | destoffset=decode_rm01_address(m,rl);\r | |
2459 | destval = fetch_data_word(m,destoffset);\r | |
2460 | srcreg = DECODE_RM_WORD_REGISTER(m,rh);\r | |
2461 | test_word(m, destval, *srcreg);\r | |
2462 | break;\r | |
2463 | case 2:\r | |
2464 | destoffset=decode_rm10_address(m,rl);\r | |
2465 | destval = fetch_data_word(m,destoffset);\r | |
2466 | srcreg = DECODE_RM_WORD_REGISTER(m,rh);\r | |
2467 | test_word(m, destval, *srcreg);\r | |
2468 | break;\r | |
2469 | case 3: /* register to register */\r | |
2470 | destreg = DECODE_RM_WORD_REGISTER(m,rl);\r | |
2471 | srcreg = DECODE_RM_WORD_REGISTER(m,rh);\r | |
2472 | test_word(m, *destreg, *srcreg);\r | |
2473 | break;\r | |
2474 | }\r | |
2475 | DECODE_CLEAR_SEGOVR(m);\r | |
2476 | }\r | |
2477 | \r | |
2478 | /*opcode=0x86*/\r | |
2479 | static void i86op_xchg_byte_RM_R(PC_ENV *m)\r | |
2480 | {\r | |
2481 | uint16 mod,rl,rh;\r | |
2482 | uint8 *destreg,*srcreg;\r | |
2483 | uint16 destoffset;\r | |
2484 | uint8 destval;\r | |
2485 | uint8 tmp;\r | |
2486 | FETCH_DECODE_MODRM(m,mod,rh,rl);\r | |
2487 | switch (mod)\r | |
2488 | {\r | |
2489 | case 0:\r | |
2490 | destoffset=decode_rm00_address(m,rl);\r | |
2491 | destval = fetch_data_byte(m,destoffset);\r | |
2492 | srcreg = DECODE_RM_BYTE_REGISTER(m,rh);\r | |
2493 | tmp = *srcreg;\r | |
2494 | *srcreg = destval;\r | |
2495 | destval = tmp;\r | |
2496 | store_data_byte(m,destoffset,destval);\r | |
2497 | break;\r | |
2498 | case 1:\r | |
2499 | destoffset=decode_rm01_address(m,rl);\r | |
2500 | destval = fetch_data_byte(m,destoffset);\r | |
2501 | srcreg = DECODE_RM_BYTE_REGISTER(m,rh);\r | |
2502 | tmp = *srcreg;\r | |
2503 | *srcreg = destval;\r | |
2504 | destval = tmp;\r | |
2505 | store_data_byte(m,destoffset,destval);\r | |
2506 | break;\r | |
2507 | case 2:\r | |
2508 | destoffset=decode_rm10_address(m,rl);\r | |
2509 | destval = fetch_data_byte(m,destoffset);\r | |
2510 | srcreg = DECODE_RM_BYTE_REGISTER(m,rh);\r | |
2511 | tmp = *srcreg;\r | |
2512 | *srcreg = destval;\r | |
2513 | destval = tmp;\r | |
2514 | store_data_byte(m,destoffset,destval);\r | |
2515 | break;\r | |
2516 | case 3: /* register to register */\r | |
2517 | destreg = DECODE_RM_BYTE_REGISTER(m,rl);\r | |
2518 | srcreg = DECODE_RM_BYTE_REGISTER(m,rh);\r | |
2519 | tmp = *srcreg;\r | |
2520 | *srcreg = *destreg;\r | |
2521 | *destreg = tmp;\r | |
2522 | break;\r | |
2523 | }\r | |
2524 | DECODE_CLEAR_SEGOVR(m);\r | |
2525 | }\r | |
2526 | \r | |
2527 | /*opcode=0x87*/\r | |
2528 | static void i86op_xchg_word_RM_R(PC_ENV *m)\r | |
2529 | {\r | |
2530 | uint16 mod,rl,rh;\r | |
2531 | uint16 *destreg,*srcreg;\r | |
2532 | uint16 destoffset;\r | |
2533 | uint16 destval;\r | |
2534 | uint16 tmp;\r | |
2535 | FETCH_DECODE_MODRM(m,mod,rh,rl);\r | |
2536 | switch (mod)\r | |
2537 | {\r | |
2538 | case 0:\r | |
2539 | destoffset=decode_rm00_address(m,rl);\r | |
2540 | destval = fetch_data_word(m,destoffset);\r | |
2541 | srcreg = DECODE_RM_WORD_REGISTER(m,rh);\r | |
2542 | tmp = *srcreg;\r | |
2543 | *srcreg = destval;\r | |
2544 | destval = tmp;\r | |
2545 | store_data_word(m,destoffset,destval);\r | |
2546 | break;\r | |
2547 | case 1:\r | |
2548 | destoffset=decode_rm01_address(m,rl);\r | |
2549 | destval = fetch_data_word(m,destoffset);\r | |
2550 | srcreg = DECODE_RM_WORD_REGISTER(m,rh);\r | |
2551 | tmp = *srcreg;\r | |
2552 | *srcreg = destval;\r | |
2553 | destval = tmp;\r | |
2554 | store_data_word(m,destoffset,destval);\r | |
2555 | break;\r | |
2556 | case 2:\r | |
2557 | destoffset=decode_rm10_address(m,rl);\r | |
2558 | destval = fetch_data_word(m,destoffset);\r | |
2559 | srcreg = DECODE_RM_WORD_REGISTER(m,rh);\r | |
2560 | tmp = *srcreg;\r | |
2561 | *srcreg = destval;\r | |
2562 | destval = tmp;\r | |
2563 | store_data_word(m,destoffset,destval);\r | |
2564 | break;\r | |
2565 | case 3: /* register to register */\r | |
2566 | destreg = DECODE_RM_WORD_REGISTER(m,rl);\r | |
2567 | srcreg = DECODE_RM_WORD_REGISTER(m,rh);\r | |
2568 | tmp = *srcreg;\r | |
2569 | *srcreg = *destreg;\r | |
2570 | *destreg = tmp;\r | |
2571 | break;\r | |
2572 | }\r | |
2573 | DECODE_CLEAR_SEGOVR(m);\r | |
2574 | }\r | |
2575 | \r | |
2576 | /*opcode=0x88*/\r | |
2577 | static void i86op_mov_byte_RM_R(PC_ENV *m)\r | |
2578 | {\r | |
2579 | uint16 mod,rl,rh;\r | |
2580 | uint8 *destreg,*srcreg;\r | |
2581 | uint16 destoffset;\r | |
2582 | FETCH_DECODE_MODRM(m,mod,rh,rl);\r | |
2583 | switch (mod)\r | |
2584 | {\r | |
2585 | case 0:\r | |
2586 | destoffset=decode_rm00_address(m,rl);\r | |
2587 | srcreg = DECODE_RM_BYTE_REGISTER(m,rh);\r | |
2588 | store_data_byte(m,destoffset,*srcreg);\r | |
2589 | break;\r | |
2590 | case 1:\r | |
2591 | destoffset=decode_rm01_address(m,rl);\r | |
2592 | srcreg = DECODE_RM_BYTE_REGISTER(m,rh);\r | |
2593 | store_data_byte(m,destoffset,*srcreg);\r | |
2594 | break;\r | |
2595 | case 2:\r | |
2596 | destoffset=decode_rm10_address(m,rl);\r | |
2597 | srcreg = DECODE_RM_BYTE_REGISTER(m,rh);\r | |
2598 | store_data_byte(m,destoffset,*srcreg);\r | |
2599 | break;\r | |
2600 | case 3: /* register to register */\r | |
2601 | destreg = DECODE_RM_BYTE_REGISTER(m,rl);\r | |
2602 | srcreg = DECODE_RM_BYTE_REGISTER(m,rh);\r | |
2603 | *destreg = *srcreg;\r | |
2604 | break;\r | |
2605 | }\r | |
2606 | DECODE_CLEAR_SEGOVR(m);\r | |
2607 | }\r | |
2608 | \r | |
2609 | /*opcode=0x89*/\r | |
2610 | static void i86op_mov_word_RM_R(PC_ENV *m)\r | |
2611 | {\r | |
2612 | uint16 mod,rl,rh;\r | |
2613 | uint16 *destreg,*srcreg;\r | |
2614 | uint16 destoffset;\r | |
2615 | FETCH_DECODE_MODRM(m,mod,rh,rl);\r | |
2616 | switch (mod)\r | |
2617 | {\r | |
2618 | case 0:\r | |
2619 | destoffset=decode_rm00_address(m,rl);\r | |
2620 | srcreg = DECODE_RM_WORD_REGISTER(m,rh);\r | |
2621 | store_data_word(m,destoffset,*srcreg);\r | |
2622 | break;\r | |
2623 | case 1:\r | |
2624 | destoffset=decode_rm01_address(m,rl);\r | |
2625 | srcreg = DECODE_RM_WORD_REGISTER(m,rh);\r | |
2626 | store_data_word(m,destoffset,*srcreg);\r | |
2627 | break;\r | |
2628 | case 2:\r | |
2629 | destoffset=decode_rm10_address(m,rl);\r | |
2630 | srcreg = DECODE_RM_WORD_REGISTER(m,rh);\r | |
2631 | store_data_word(m,destoffset,*srcreg);\r | |
2632 | break;\r | |
2633 | case 3: /* register to register */\r | |
2634 | destreg = DECODE_RM_WORD_REGISTER(m,rl);\r | |
2635 | srcreg = DECODE_RM_WORD_REGISTER(m,rh);\r | |
2636 | *destreg = *srcreg;\r | |
2637 | break;\r | |
2638 | }\r | |
2639 | DECODE_CLEAR_SEGOVR(m);\r | |
2640 | }\r | |
2641 | \r | |
2642 | /*opcode=0x8a*/\r | |
2643 | static void i86op_mov_byte_R_RM(PC_ENV *m)\r | |
2644 | {\r | |
2645 | uint16 mod,rl,rh;\r | |
2646 | uint8 *destreg,*srcreg;\r | |
2647 | uint16 srcoffset;\r | |
2648 | uint8 srcval;\r | |
2649 | FETCH_DECODE_MODRM(m,mod,rh,rl);\r | |
2650 | switch (mod)\r | |
2651 | {\r | |
2652 | case 0:\r | |
2653 | destreg = DECODE_RM_BYTE_REGISTER(m,rh);\r | |
2654 | srcoffset=decode_rm00_address(m,rl);\r | |
2655 | srcval = fetch_data_byte(m,srcoffset);\r | |
2656 | *destreg = srcval;\r | |
2657 | break;\r | |
2658 | case 1:\r | |
2659 | destreg = DECODE_RM_BYTE_REGISTER(m,rh);\r | |
2660 | srcoffset=decode_rm01_address(m,rl);\r | |
2661 | srcval = fetch_data_byte(m,srcoffset);\r | |
2662 | *destreg = srcval;\r | |
2663 | break;\r | |
2664 | case 2:\r | |
2665 | destreg = DECODE_RM_BYTE_REGISTER(m,rh);\r | |
2666 | srcoffset=decode_rm10_address(m,rl);\r | |
2667 | srcval = fetch_data_byte(m,srcoffset);\r | |
2668 | *destreg = srcval;\r | |
2669 | break;\r | |
2670 | case 3: /* register to register */\r | |
2671 | destreg = DECODE_RM_BYTE_REGISTER(m,rh);\r | |
2672 | srcreg = DECODE_RM_BYTE_REGISTER(m,rl);\r | |
2673 | *destreg = *srcreg;\r | |
2674 | break;\r | |
2675 | }\r | |
2676 | DECODE_CLEAR_SEGOVR(m);\r | |
2677 | }\r | |
2678 | \r | |
2679 | /*opcode=0x8b*/\r | |
2680 | static void i86op_mov_word_R_RM(PC_ENV *m)\r | |
2681 | {\r | |
2682 | uint16 mod,rl,rh;\r | |
2683 | uint16 *destreg,*srcreg;\r | |
2684 | uint16 srcoffset;\r | |
2685 | uint16 srcval;\r | |
2686 | FETCH_DECODE_MODRM(m,mod,rh,rl);\r | |
2687 | switch (mod)\r | |
2688 | {\r | |
2689 | case 0:\r | |
2690 | destreg = DECODE_RM_WORD_REGISTER(m,rh);\r | |
2691 | srcoffset=decode_rm00_address(m,rl);\r | |
2692 | srcval = fetch_data_word(m,srcoffset);\r | |
2693 | *destreg = srcval;\r | |
2694 | break;\r | |
2695 | case 1:\r | |
2696 | destreg = DECODE_RM_WORD_REGISTER(m,rh);\r | |
2697 | srcoffset=decode_rm01_address(m,rl);\r | |
2698 | srcval = fetch_data_word(m,srcoffset);\r | |
2699 | *destreg = srcval;\r | |
2700 | break;\r | |
2701 | case 2:\r | |
2702 | destreg = DECODE_RM_WORD_REGISTER(m,rh);\r | |
2703 | srcoffset=decode_rm10_address(m,rl);\r | |
2704 | srcval = fetch_data_word(m,srcoffset);\r | |
2705 | *destreg = srcval;\r | |
2706 | break;\r | |
2707 | case 3: /* register to register */\r | |
2708 | destreg = DECODE_RM_WORD_REGISTER(m,rh);\r | |
2709 | srcreg = DECODE_RM_WORD_REGISTER(m,rl);\r | |
2710 | *destreg = *srcreg;\r | |
2711 | break;\r | |
2712 | }\r | |
2713 | DECODE_CLEAR_SEGOVR(m);\r | |
2714 | }\r | |
2715 | \r | |
2716 | /*opcode=0x8c*/\r | |
2717 | static void i86op_mov_word_RM_SR(PC_ENV *m)\r | |
2718 | {\r | |
2719 | uint16 mod,rl,rh;\r | |
2720 | uint16 *destreg,*srcreg;\r | |
2721 | uint16 destoffset;\r | |
2722 | uint16 destval;\r | |
2723 | FETCH_DECODE_MODRM(m,mod,rh,rl);\r | |
2724 | switch (mod)\r | |
2725 | {\r | |
2726 | case 0:\r | |
2727 | destoffset=decode_rm00_address(m,rl);\r | |
2728 | srcreg = decode_rm_seg_register(m,rh);\r | |
2729 | destval = *srcreg;\r | |
2730 | store_data_word(m,destoffset,destval);\r | |
2731 | break;\r | |
2732 | case 1:\r | |
2733 | destoffset=decode_rm01_address(m,rl);\r | |
2734 | srcreg = decode_rm_seg_register(m,rh);\r | |
2735 | destval = *srcreg;\r | |
2736 | store_data_word(m,destoffset,destval);\r | |
2737 | break;\r | |
2738 | case 2:\r | |
2739 | destoffset=decode_rm10_address(m,rl);\r | |
2740 | srcreg = decode_rm_seg_register(m,rh);\r | |
2741 | destval = *srcreg;\r | |
2742 | store_data_word(m,destoffset,destval);\r | |
2743 | break;\r | |
2744 | case 3: /* register to register */\r | |
2745 | destreg = DECODE_RM_WORD_REGISTER(m,rl);\r | |
2746 | srcreg = decode_rm_seg_register(m,rh);\r | |
2747 | *destreg = *srcreg;\r | |
2748 | break;\r | |
2749 | }\r | |
2750 | DECODE_CLEAR_SEGOVR(m);\r | |
2751 | }\r | |
2752 | \r | |
2753 | /*opcode=0x8d*/\r | |
2754 | static void i86op_lea_word_R_M(PC_ENV *m)\r | |
2755 | {\r | |
2756 | uint16 mod,rl,rh;\r | |
2757 | uint16 *srcreg;\r | |
2758 | uint16 destoffset;\r | |
2759 | FETCH_DECODE_MODRM(m,mod,rh,rl);\r | |
2760 | switch (mod)\r | |
2761 | {\r | |
2762 | case 0:\r | |
2763 | srcreg = DECODE_RM_WORD_REGISTER(m,rh);\r | |
2764 | destoffset=decode_rm00_address(m,rl);\r | |
2765 | *srcreg = destoffset;\r | |
2766 | break;\r | |
2767 | case 1:\r | |
2768 | srcreg = DECODE_RM_WORD_REGISTER(m,rh);\r | |
2769 | destoffset=decode_rm01_address(m,rl);\r | |
2770 | *srcreg = destoffset;\r | |
2771 | break;\r | |
2772 | case 2:\r | |
2773 | srcreg = DECODE_RM_WORD_REGISTER(m,rh);\r | |
2774 | destoffset=decode_rm10_address(m,rl);\r | |
2775 | *srcreg = destoffset;\r | |
2776 | break;\r | |
2777 | case 3: /* register to register */\r | |
2778 | /* undefined. Do nothing. */\r | |
2779 | break;\r | |
2780 | }\r | |
2781 | DECODE_CLEAR_SEGOVR(m);\r | |
2782 | }\r | |
2783 | \r | |
2784 | /*opcode=0x8e*/\r | |
2785 | static void i86op_mov_word_SR_RM(PC_ENV *m)\r | |
2786 | {\r | |
2787 | uint16 mod,rl,rh;\r | |
2788 | uint16 *destreg,*srcreg;\r | |
2789 | uint16 srcoffset;\r | |
2790 | uint16 srcval;\r | |
2791 | FETCH_DECODE_MODRM(m,mod,rh,rl);\r | |
2792 | switch (mod)\r | |
2793 | {\r | |
2794 | case 0:\r | |
2795 | destreg = decode_rm_seg_register(m,rh);\r | |
2796 | srcoffset=decode_rm00_address(m,rl);\r | |
2797 | srcval = fetch_data_word(m,srcoffset);\r | |
2798 | *destreg = srcval;\r | |
2799 | break;\r | |
2800 | case 1:\r | |
2801 | destreg = decode_rm_seg_register(m,rh);\r | |
2802 | srcoffset=decode_rm01_address(m,rl);\r | |
2803 | srcval = fetch_data_word(m,srcoffset);\r | |
2804 | *destreg = srcval;\r | |
2805 | break;\r | |
2806 | case 2:\r | |
2807 | destreg = decode_rm_seg_register(m,rh);\r | |
2808 | srcoffset = decode_rm10_address(m,rl);\r | |
2809 | srcval = fetch_data_word(m,srcoffset);\r | |
2810 | *destreg = srcval;\r | |
2811 | break;\r | |
2812 | case 3: /* register to register */\r | |
2813 | destreg = decode_rm_seg_register(m,rh);\r | |
2814 | srcreg = DECODE_RM_WORD_REGISTER(m,rl);\r | |
2815 | *destreg = *srcreg;\r | |
2816 | break;\r | |
2817 | }\r | |
2818 | /*\\r | |
2819 | * clean up, and reset all the R_xSP pointers to the correct\r | |
2820 | * locations. This is about 3x too much overhead (doing all the\r | |
2821 | * segreg ptrs when only one is needed, but this instruction\r | |
2822 | * *cannot* be that common, and this isn't too much work anyway.\r | |
2823 | \*/\r | |
2824 | DECODE_CLEAR_SEGOVR(m);\r | |
2825 | }\r | |
2826 | \r | |
2827 | /*opcode=0x8f*/\r | |
2828 | static void i86op_pop_RM(PC_ENV *m)\r | |
2829 | {\r | |
2830 | uint16 mod,rl,rh;\r | |
2831 | uint16 *destreg;\r | |
2832 | uint16 destoffset;\r | |
2833 | uint16 destval;\r | |
2834 | FETCH_DECODE_MODRM(m,mod,rh,rl);\r | |
2835 | if (rh != 0)\r | |
2836 | {\r | |
2837 | halt_sys(m);\r | |
2838 | }\r | |
2839 | switch (mod)\r | |
2840 | {\r | |
2841 | case 0:\r | |
2842 | destoffset=decode_rm00_address(m,rl);\r | |
2843 | destval = pop_word( m);\r | |
2844 | store_data_word(m,destoffset,destval);\r | |
2845 | break;\r | |
2846 | case 1:\r | |
2847 | destoffset=decode_rm01_address(m,rl);\r | |
2848 | destval = pop_word(m);\r | |
2849 | store_data_word(m,destoffset,destval);\r | |
2850 | break;\r | |
2851 | case 2:\r | |
2852 | destoffset=decode_rm10_address(m,rl);\r | |
2853 | destval = pop_word(m);\r | |
2854 | store_data_word(m,destoffset,destval);\r | |
2855 | break;\r | |
2856 | case 3: /* register to register */\r | |
2857 | destreg = DECODE_RM_WORD_REGISTER(m,rl);\r | |
2858 | *destreg = pop_word(m);\r | |
2859 | break;\r | |
2860 | }\r | |
2861 | DECODE_CLEAR_SEGOVR(m);\r | |
2862 | }\r | |
2863 | \r | |
2864 | /*opcode=0x90*/\r | |
2865 | static void i86op_nop(PC_ENV *m)\r | |
2866 | {\r | |
2867 | DECODE_CLEAR_SEGOVR(m);\r | |
2868 | }\r | |
2869 | \r | |
2870 | /*opcode=0x91*/\r | |
2871 | static void i86op_xchg_word_AX_CX(PC_ENV *m)\r | |
2872 | {\r | |
2873 | uint16 tmp;\r | |
2874 | tmp = m->R_AX;\r | |
2875 | m->R_AX = m->R_CX;\r | |
2876 | m->R_CX = tmp;\r | |
2877 | DECODE_CLEAR_SEGOVR(m);\r | |
2878 | }\r | |
2879 | \r | |
2880 | /*opcode=0x92*/\r | |
2881 | static void i86op_xchg_word_AX_DX(PC_ENV *m)\r | |
2882 | {\r | |
2883 | uint16 tmp;\r | |
2884 | tmp = m->R_AX;\r | |
2885 | m->R_AX = m->R_DX;\r | |
2886 | m->R_DX = tmp;\r | |
2887 | DECODE_CLEAR_SEGOVR(m);\r | |
2888 | }\r | |
2889 | \r | |
2890 | /*opcode=0x93*/\r | |
2891 | static void i86op_xchg_word_AX_BX(PC_ENV *m)\r | |
2892 | {\r | |
2893 | uint16 tmp;\r | |
2894 | tmp = m->R_AX;\r | |
2895 | m->R_AX = m->R_BX;\r | |
2896 | m->R_BX = tmp;\r | |
2897 | DECODE_CLEAR_SEGOVR(m);\r | |
2898 | }\r | |
2899 | \r | |
2900 | /*opcode=0x94*/\r | |
2901 | static void i86op_xchg_word_AX_SP(PC_ENV *m)\r | |
2902 | {\r | |
2903 | uint16 tmp;\r | |
2904 | tmp = m->R_AX;\r | |
2905 | m->R_AX = m->R_SP;\r | |
2906 | m->R_SP = tmp;\r | |
2907 | DECODE_CLEAR_SEGOVR(m);\r | |
2908 | }\r | |
2909 | \r | |
2910 | /*opcode=0x95*/\r | |
2911 | static void i86op_xchg_word_AX_BP(PC_ENV *m)\r | |
2912 | {\r | |
2913 | uint16 tmp;\r | |
2914 | tmp = m->R_AX;\r | |
2915 | m->R_AX = m->R_BP;\r | |
2916 | m->R_BP = tmp;\r | |
2917 | DECODE_CLEAR_SEGOVR(m);\r | |
2918 | }\r | |
2919 | \r | |
2920 | /*opcode=0x96*/\r | |
2921 | static void i86op_xchg_word_AX_SI(PC_ENV *m)\r | |
2922 | {\r | |
2923 | uint16 tmp;\r | |
2924 | tmp = m->R_AX;\r | |
2925 | m->R_AX = m->R_SI;\r | |
2926 | m->R_SI = tmp;\r | |
2927 | DECODE_CLEAR_SEGOVR(m);\r | |
2928 | }\r | |
2929 | \r | |
2930 | /*opcode=0x97*/\r | |
2931 | static void i86op_xchg_word_AX_DI(PC_ENV *m)\r | |
2932 | {\r | |
2933 | uint16 tmp;\r | |
2934 | tmp = m->R_AX;\r | |
2935 | m->R_AX = m->R_DI;\r | |
2936 | m->R_DI = tmp;\r | |
2937 | DECODE_CLEAR_SEGOVR(m);\r | |
2938 | }\r | |
2939 | \r | |
2940 | /*opcode=0x98*/\r | |
2941 | static void i86op_cbw(PC_ENV *m)\r | |
2942 | {\r | |
2943 | if (m->R_AL & 0x80)\r | |
2944 | {\r | |
2945 | m->R_AH = 0xff;\r | |
2946 | }\r | |
2947 | else\r | |
2948 | {\r | |
2949 | m->R_AH = 0x0;\r | |
2950 | }\r | |
2951 | DECODE_CLEAR_SEGOVR(m);\r | |
2952 | }\r | |
2953 | \r | |
2954 | /*opcode=0x99*/\r | |
2955 | static void i86op_cwd(PC_ENV *m)\r | |
2956 | {\r | |
2957 | if (m->R_AX & 0x8000)\r | |
2958 | {\r | |
2959 | m->R_DX = 0xffff;\r | |
2960 | }\r | |
2961 | else\r | |
2962 | {\r | |
2963 | m->R_DX = 0x0;\r | |
2964 | }\r | |
2965 | DECODE_CLEAR_SEGOVR(m);\r | |
2966 | }\r | |
2967 | \r | |
2968 | /*opcode=0x9a*/\r | |
2969 | static void i86op_call_far_IMM(PC_ENV *m)\r | |
2970 | {\r | |
2971 | uint16 farseg,faroff;\r | |
2972 | faroff = fetch_word_imm(m);\r | |
2973 | farseg = fetch_word_imm(m);\r | |
2974 | /* XXX\r | |
2975 | HOOKED INTERRUPT VECTORS CALLING INTO OUR "BIOS"\r | |
2976 | WILL CAUSE PROBLEMS UNLESS ALL INTERSEGMENT STUFF IS\r | |
2977 | CHECKED FOR BIOS ACCESS. CHECK NEEDED HERE.\r | |
2978 | FOR MOMENT, LET IT ALONE.\r | |
2979 | */\r | |
2980 | push_word(m,m->R_CS);\r | |
2981 | m->R_CS = farseg;\r | |
2982 | push_word(m,m->R_IP);\r | |
2983 | m->R_IP = faroff;\r | |
2984 | DECODE_CLEAR_SEGOVR(m);\r | |
2985 | }\r | |
2986 | \r | |
2987 | /*opcode=0x9b*/\r | |
2988 | static void i86op_wait(PC_ENV *m)\r | |
2989 | {\r | |
2990 | /* NADA. */\r | |
2991 | DECODE_CLEAR_SEGOVR(m);\r | |
2992 | }\r | |
2993 | \r | |
2994 | /*opcode=0x9c*/\r | |
2995 | static void i86op_pushf_word(PC_ENV *m)\r | |
2996 | {\r | |
2997 | uint16 flags;\r | |
2998 | flags = m->R_FLG;\r | |
2999 | /* clear out *all* bits not representing flags */\r | |
3000 | flags &= F_MSK;\r | |
3001 | /* TURN ON CHARACTERISTIC BITS OF FLAG FOR 8088 */\r | |
3002 | flags |= F_ALWAYS_ON;\r | |
3003 | push_word(m,flags);\r | |
3004 | DECODE_CLEAR_SEGOVR(m);\r | |
3005 | }\r | |
3006 | \r | |
3007 | /*opcode=0x9d*/\r | |
3008 | static void i86op_popf_word(PC_ENV *m)\r | |
3009 | {\r | |
3010 | m->R_FLG = pop_word(m);\r | |
3011 | DECODE_CLEAR_SEGOVR(m);\r | |
3012 | }\r | |
3013 | \r | |
3014 | /*opcode=0x9e*/\r | |
3015 | static void i86op_sahf(PC_ENV *m)\r | |
3016 | {\r | |
3017 | /* clear the lower bits of the flag register */\r | |
3018 | m->R_FLG &= 0xffffff00;\r | |
3019 | /* or in the AH register into the flags register */\r | |
3020 | m->R_FLG |= m->R_AH;\r | |
3021 | DECODE_CLEAR_SEGOVR(m);\r | |
3022 | }\r | |
3023 | \r | |
3024 | /*opcode=0x9f*/\r | |
3025 | static void i86op_lahf(PC_ENV *m)\r | |
3026 | {\r | |
3027 | m->R_AH = m->R_FLG & 0xff;\r | |
3028 | /*undocumented TC++ behavior??? Nope. It's documented, but\r | |
3029 | you have too look real hard to notice it. */\r | |
3030 | m->R_AH |= 0x2;\r | |
3031 | DECODE_CLEAR_SEGOVR(m);\r | |
3032 | }\r | |
3033 | \r | |
3034 | /*opcode=0xa0*/\r | |
3035 | static void i86op_mov_AL_M_IMM(PC_ENV *m)\r | |
3036 | {\r | |
3037 | uint16 offset;\r | |
3038 | uint8 destval;\r | |
3039 | offset = fetch_word_imm(m);\r | |
3040 | destval = fetch_data_byte(m,offset);\r | |
3041 | m->R_AL = destval;\r | |
3042 | DECODE_CLEAR_SEGOVR(m);\r | |
3043 | }\r | |
3044 | \r | |
3045 | /*opcode=0xa1*/\r | |
3046 | static void i86op_mov_AX_M_IMM(PC_ENV *m)\r | |
3047 | {\r | |
3048 | uint16 offset;\r | |
3049 | uint16 destval;\r | |
3050 | offset = fetch_word_imm(m);\r | |
3051 | destval = fetch_data_word(m,offset);\r | |
3052 | m->R_AX = destval;\r | |
3053 | DECODE_CLEAR_SEGOVR(m);\r | |
3054 | }\r | |
3055 | \r | |
3056 | /*opcode=0xa2*/\r | |
3057 | static void i86op_mov_M_AL_IMM(PC_ENV *m)\r | |
3058 | {\r | |
3059 | uint16 offset;\r | |
3060 | offset = fetch_word_imm(m);\r | |
3061 | store_data_byte(m,offset,m->R_AL);\r | |
3062 | DECODE_CLEAR_SEGOVR(m);\r | |
3063 | }\r | |
3064 | \r | |
3065 | /*opcode=0xa3*/\r | |
3066 | static void i86op_mov_M_AX_IMM(PC_ENV *m)\r | |
3067 | {\r | |
3068 | uint16 offset;\r | |
3069 | offset = fetch_word_imm(m);\r | |
3070 | store_data_word(m,offset,m->R_AX);\r | |
3071 | DECODE_CLEAR_SEGOVR(m);\r | |
3072 | }\r | |
3073 | \r | |
3074 | /* JHH CLEANED */\r | |
3075 | \r | |
3076 | /*opcode=0xa4*/\r | |
3077 | static void i86op_movs_byte(PC_ENV *m)\r | |
3078 | {\r | |
3079 | uint8 val;\r | |
3080 | int inc;\r | |
3081 | if (ACCESS_FLAG(m,F_DF)) /* down */\r | |
3082 | inc = -1;\r | |
3083 | else\r | |
3084 | inc = 1;\r | |
3085 | if (m->sysmode & (SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE))\r | |
3086 | {\r | |
3087 | /* dont care whether REPE or REPNE */\r | |
3088 | /* move them until CX is ZERO. */\r | |
3089 | while (m->R_CX != 0)\r | |
3090 | {\r | |
3091 | val = fetch_data_byte(m,m->R_SI);\r | |
3092 | store_data_byte_abs(m,m->R_ES,m->R_DI,val);\r | |
3093 | m->R_CX -= 1;\r | |
3094 | m->R_SI += inc;\r | |
3095 | m->R_DI += inc;\r | |
3096 | }\r | |
3097 | m->sysmode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE);\r | |
3098 | }\r | |
3099 | else\r | |
3100 | {\r | |
3101 | val = fetch_data_byte(m,m->R_SI);\r | |
3102 | store_data_byte_abs(m,m->R_ES,m->R_DI,val);\r | |
3103 | m->R_SI += inc;\r | |
3104 | m->R_DI += inc;\r | |
3105 | }\r | |
3106 | DECODE_CLEAR_SEGOVR(m);\r | |
3107 | }\r | |
3108 | \r | |
3109 | /*opcode=0xa5*/\r | |
3110 | static void i86op_movs_word(PC_ENV *m)\r | |
3111 | {\r | |
3112 | int16 val;\r | |
3113 | int inc;\r | |
3114 | if (ACCESS_FLAG(m, F_DF)) /* down */\r | |
3115 | inc = -2;\r | |
3116 | else\r | |
3117 | inc = 2;\r | |
3118 | if (m->sysmode & (SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE))\r | |
3119 | {\r | |
3120 | /* dont care whether REPE or REPNE */\r | |
3121 | /* move them until CX is ZERO. */\r | |
3122 | while (m->R_CX != 0)\r | |
3123 | {\r | |
3124 | val = fetch_data_word(m,m->R_SI);\r | |
3125 | store_data_word_abs(m,m->R_ES,m->R_DI,val);\r | |
3126 | m->R_CX -= 1;\r | |
3127 | m->R_SI += inc;\r | |
3128 | m->R_DI += inc;\r | |
3129 | }\r | |
3130 | m->sysmode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE);\r | |
3131 | }\r | |
3132 | else\r | |
3133 | {\r | |
3134 | val = fetch_data_word(m,m->R_SI);\r | |
3135 | store_data_word_abs(m,m->R_ES,m->R_DI,val);\r | |
3136 | m->R_SI += inc;\r | |
3137 | m->R_DI += inc;\r | |
3138 | }\r | |
3139 | DECODE_CLEAR_SEGOVR(m);\r | |
3140 | }\r | |
3141 | \r | |
3142 | /*opcode=0xa6*/\r | |
3143 | static void i86op_cmps_byte(PC_ENV *m)\r | |
3144 | {\r | |
3145 | int8 val1,val2;\r | |
3146 | int inc;\r | |
3147 | if (ACCESS_FLAG(m,F_DF)) /* down */\r | |
3148 | inc = -1;\r | |
3149 | else\r | |
3150 | inc = 1;\r | |
3151 | if (m->sysmode & SYSMODE_PREFIX_REPE)\r | |
3152 | {\r | |
3153 | /* REPE */\r | |
3154 | /* move them until CX is ZERO. */\r | |
3155 | while (m->R_CX != 0)\r | |
3156 | {\r | |
3157 | val1 = fetch_data_byte(m,m->R_SI);\r | |
3158 | val2 = fetch_data_byte_abs(m,m->R_ES,m->R_DI);\r | |
3159 | cmp_byte(m, val1,val2);\r | |
3160 | m->R_CX -= 1;\r | |
3161 | m->R_SI += inc;\r | |
3162 | m->R_DI += inc;\r | |
3163 | if (ACCESS_FLAG(m,F_ZF)==0) break;\r | |
3164 | }\r | |
3165 | m->sysmode &= ~SYSMODE_PREFIX_REPE;\r | |
3166 | }\r | |
3167 | else if (m->sysmode & SYSMODE_PREFIX_REPNE)\r | |
3168 | {\r | |
3169 | /* REPNE */\r | |
3170 | /* move them until CX is ZERO. */\r | |
3171 | while (m->R_CX != 0)\r | |
3172 | {\r | |
3173 | val1 = fetch_data_byte(m,m->R_SI);\r | |
3174 | val2 = fetch_data_byte_abs(m,m->R_ES,m->R_DI);\r | |
3175 | cmp_byte(m, val1,val2);\r | |
3176 | m->R_CX -= 1;\r | |
3177 | m->R_SI += inc;\r | |
3178 | m->R_DI += inc;\r | |
3179 | if (ACCESS_FLAG(m,F_ZF)) break; /* zero flag set means equal */\r | |
3180 | }\r | |
3181 | m->sysmode &= ~SYSMODE_PREFIX_REPNE;\r | |
3182 | }\r | |
3183 | else\r | |
3184 | {\r | |
3185 | val1 = fetch_data_byte(m,m->R_SI);\r | |
3186 | val2 = fetch_data_byte_abs(m,m->R_ES,m->R_DI);\r | |
3187 | cmp_byte(m, val1,val2);\r | |
3188 | m->R_SI += inc;\r | |
3189 | m->R_DI += inc;\r | |
3190 | }\r | |
3191 | DECODE_CLEAR_SEGOVR(m);\r | |
3192 | }\r | |
3193 | \r | |
3194 | /*opcode=0xa7*/\r | |
3195 | static void i86op_cmps_word(PC_ENV *m)\r | |
3196 | {\r | |
3197 | int16 val1,val2;\r | |
3198 | int inc;\r | |
3199 | if (ACCESS_FLAG(m,F_DF)) /* down */\r | |
3200 | inc = -2;\r | |
3201 | else\r | |
3202 | inc = 2;\r | |
3203 | if (m->sysmode & SYSMODE_PREFIX_REPE)\r | |
3204 | {\r | |
3205 | /* REPE */\r | |
3206 | /* move them until CX is ZERO. */\r | |
3207 | while (m->R_CX != 0)\r | |
3208 | {\r | |
3209 | val1 = fetch_data_word(m,m->R_SI);\r | |
3210 | val2 = fetch_data_word_abs(m,m->R_ES,m->R_DI);\r | |
3211 | cmp_word(m, val1,val2);\r | |
3212 | m->R_CX -= 1;\r | |
3213 | m->R_SI += inc;\r | |
3214 | m->R_DI += inc;\r | |
3215 | if (ACCESS_FLAG(m,F_ZF)==0) break;\r | |
3216 | }\r | |
3217 | m->sysmode &= ~SYSMODE_PREFIX_REPE;\r | |
3218 | }\r | |
3219 | else if (m->sysmode & SYSMODE_PREFIX_REPNE)\r | |
3220 | {\r | |
3221 | /* REPNE */\r | |
3222 | /* move them until CX is ZERO. */\r | |
3223 | while (m->R_CX != 0)\r | |
3224 | {\r | |
3225 | val1 = fetch_data_word(m,m->R_SI);\r | |
3226 | val2 = fetch_data_word_abs(m,m->R_ES,m->R_DI);\r | |
3227 | cmp_word(m, val1,val2);\r | |
3228 | m->R_CX -= 1;\r | |
3229 | m->R_SI += inc;\r | |
3230 | m->R_DI += inc;\r | |
3231 | if (ACCESS_FLAG(m,F_ZF)) break; /* zero flag set means equal */\r | |
3232 | }\r | |
3233 | m->sysmode &= ~SYSMODE_PREFIX_REPNE;\r | |
3234 | }\r | |
3235 | else\r | |
3236 | {\r | |
3237 | val1 = fetch_data_word(m,m->R_SI);\r | |
3238 | val2 = fetch_data_word_abs(m,m->R_ES,m->R_DI);\r | |
3239 | cmp_word(m, val1,val2);\r | |
3240 | m->R_SI += inc;\r | |
3241 | m->R_DI += inc;\r | |
3242 | }\r | |
3243 | DECODE_CLEAR_SEGOVR(m);\r | |
3244 | }\r | |
3245 | \r | |
3246 | /*opcode=0xa8*/\r | |
3247 | static void i86op_test_AL_IMM(PC_ENV *m)\r | |
3248 | {\r | |
3249 | int imm;\r | |
3250 | imm = fetch_byte_imm(m);\r | |
3251 | test_byte(m, m->R_AL, imm);\r | |
3252 | DECODE_CLEAR_SEGOVR(m);\r | |
3253 | }\r | |
3254 | \r | |
3255 | /*opcode=0xa9*/\r | |
3256 | static void i86op_test_AX_IMM(PC_ENV *m)\r | |
3257 | {\r | |
3258 | int imm;\r | |
3259 | imm = fetch_word_imm(m);\r | |
3260 | test_word(m, m->R_AX, imm);\r | |
3261 | DECODE_CLEAR_SEGOVR(m);\r | |
3262 | }\r | |
3263 | \r | |
3264 | /*opcode=0xaa*/\r | |
3265 | static void i86op_stos_byte(PC_ENV *m)\r | |
3266 | {\r | |
3267 | int inc;\r | |
3268 | if (ACCESS_FLAG(m, F_DF)) /* down */\r | |
3269 | inc = -1;\r | |
3270 | else\r | |
3271 | inc = 1;\r | |
3272 | if (m->sysmode & (SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE))\r | |
3273 | {\r | |
3274 | /* dont care whether REPE or REPNE */\r | |
3275 | /* move them until CX is ZERO. */\r | |
3276 | while (m->R_CX != 0)\r | |
3277 | {\r | |
3278 | store_data_byte_abs(m,m->R_ES,m->R_DI,m->R_AL);\r | |
3279 | m->R_CX -= 1;\r | |
3280 | m->R_DI += inc;\r | |
3281 | }\r | |
3282 | m->sysmode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE);\r | |
3283 | }\r | |
3284 | else\r | |
3285 | {\r | |
3286 | store_data_byte_abs(m,m->R_ES,m->R_DI,m->R_AL);\r | |
3287 | m->R_DI += inc;\r | |
3288 | }\r | |
3289 | DECODE_CLEAR_SEGOVR(m);\r | |
3290 | }\r | |
3291 | \r | |
3292 | /*opcode=0xab*/\r | |
3293 | static void i86op_stos_word(PC_ENV *m)\r | |
3294 | {\r | |
3295 | int inc;\r | |
3296 | if (ACCESS_FLAG(m, F_DF)) /* down */\r | |
3297 | inc = -2;\r | |
3298 | else\r | |
3299 | inc = 2;\r | |
3300 | if (m->sysmode & (SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE))\r | |
3301 | {\r | |
3302 | /* dont care whether REPE or REPNE */\r | |
3303 | /* move them until CX is ZERO. */\r | |
3304 | while (m->R_CX != 0)\r | |
3305 | {\r | |
3306 | store_data_word_abs(m,m->R_ES,m->R_DI,m->R_AX);\r | |
3307 | m->R_CX -= 1;\r | |
3308 | m->R_DI += inc;\r | |
3309 | }\r | |
3310 | m->sysmode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE);\r | |
3311 | }\r | |
3312 | else\r | |
3313 | {\r | |
3314 | store_data_word_abs(m,m->R_ES,m->R_DI,m->R_AX);\r | |
3315 | m->R_DI += inc;\r | |
3316 | }\r | |
3317 | DECODE_CLEAR_SEGOVR(m);\r | |
3318 | }\r | |
3319 | \r | |
3320 | /*opcode=0xac*/\r | |
3321 | static void i86op_lods_byte(PC_ENV *m)\r | |
3322 | {\r | |
3323 | int inc;\r | |
3324 | if (ACCESS_FLAG(m,F_DF)) /* down */\r | |
3325 | inc = -1;\r | |
3326 | else\r | |
3327 | inc = 1;\r | |
3328 | if (m->sysmode & (SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE))\r | |
3329 | {\r | |
3330 | /* dont care whether REPE or REPNE */\r | |
3331 | /* move them until CX is ZERO. */\r | |
3332 | while (m->R_CX != 0)\r | |
3333 | {\r | |
3334 | m->R_AL = fetch_data_byte(m,m->R_SI);\r | |
3335 | m->R_CX -= 1;\r | |
3336 | m->R_SI += inc;\r | |
3337 | }\r | |
3338 | m->sysmode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE);\r | |
3339 | }\r | |
3340 | else\r | |
3341 | {\r | |
3342 | m->R_AL = fetch_data_byte(m,m->R_SI);\r | |
3343 | m->R_SI += inc;\r | |
3344 | }\r | |
3345 | DECODE_CLEAR_SEGOVR(m);\r | |
3346 | }\r | |
3347 | \r | |
3348 | /*opcode=0xad*/\r | |
3349 | static void i86op_lods_word(PC_ENV *m)\r | |
3350 | {\r | |
3351 | int inc;\r | |
3352 | if (ACCESS_FLAG(m,F_DF)) /* down */\r | |
3353 | inc = -2;\r | |
3354 | else\r | |
3355 | inc = 2;\r | |
3356 | if (m->sysmode & (SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE))\r | |
3357 | {\r | |
3358 | /* dont care whether REPE or REPNE */\r | |
3359 | /* move them until CX is ZERO. */\r | |
3360 | while (m->R_CX != 0)\r | |
3361 | {\r | |
3362 | m->R_AX = fetch_data_word(m,m->R_SI);\r | |
3363 | m->R_CX -= 1;\r | |
3364 | m->R_SI += inc;\r | |
3365 | }\r | |
3366 | m->sysmode &= ~(SYSMODE_PREFIX_REPE | SYSMODE_PREFIX_REPNE);\r | |
3367 | }\r | |
3368 | else\r | |
3369 | {\r | |
3370 | m->R_AX = fetch_data_word(m,m->R_SI);\r | |
3371 | m->R_SI += inc;\r | |
3372 | }\r | |
3373 | DECODE_CLEAR_SEGOVR(m);\r | |
3374 | }\r | |
3375 | \r | |
3376 | /*opcode=0xae*/\r | |
3377 | static void i86op_scas_byte(PC_ENV *m)\r | |
3378 | {\r | |
3379 | int8 val2;\r | |
3380 | int inc;\r | |
3381 | if (ACCESS_FLAG(m,F_DF)) /* down */\r | |
3382 | inc = -1;\r | |
3383 | else\r | |
3384 | inc = 1;\r | |
3385 | if (m->sysmode & SYSMODE_PREFIX_REPE)\r | |
3386 | {\r | |
3387 | /* REPE */\r | |
3388 | /* move them until CX is ZERO. */\r | |
3389 | while (m->R_CX != 0)\r | |
3390 | {\r | |
3391 | val2 = fetch_data_byte_abs(m,m->R_ES,m->R_DI);\r | |
3392 | cmp_byte(m, m->R_AL,val2);\r | |
3393 | m->R_CX -= 1;\r | |
3394 | m->R_DI += inc;\r | |
3395 | if (ACCESS_FLAG(m,F_ZF)==0) break;\r | |
3396 | }\r | |
3397 | m->sysmode &= ~SYSMODE_PREFIX_REPE;\r | |
3398 | }\r | |
3399 | else if (m->sysmode & SYSMODE_PREFIX_REPNE)\r | |
3400 | {\r | |
3401 | /* REPNE */\r | |
3402 | /* move them until CX is ZERO. */\r | |
3403 | while (m->R_CX != 0)\r | |
3404 | {\r | |
3405 | val2 = fetch_data_byte_abs(m,m->R_ES,m->R_DI);\r | |
3406 | cmp_byte(m, m->R_AL,val2);\r | |
3407 | m->R_CX -= 1;\r | |
3408 | m->R_DI += inc;\r | |
3409 | if (ACCESS_FLAG(m,F_ZF)) break; /* zero flag set means equal */\r | |
3410 | }\r | |
3411 | m->sysmode &= ~SYSMODE_PREFIX_REPNE;\r | |
3412 | }\r | |
3413 | else\r | |
3414 | {\r | |
3415 | val2 = fetch_data_byte_abs(m,m->R_ES,m->R_DI);\r | |
3416 | cmp_byte(m, m->R_AL,val2);\r | |
3417 | m->R_DI += inc;\r | |
3418 | }\r | |
3419 | DECODE_CLEAR_SEGOVR(m);\r | |
3420 | }\r | |
3421 | \r | |
3422 | /*opcode=0xaf*/\r | |
3423 | static void i86op_scas_word(PC_ENV *m)\r | |
3424 | {\r | |
3425 | int16 val2;\r | |
3426 | int inc;\r | |
3427 | if (ACCESS_FLAG(m, F_DF)) /* down */\r | |
3428 | inc = -2;\r | |
3429 | else\r | |
3430 | inc = 2;\r | |
3431 | if (m->sysmode & SYSMODE_PREFIX_REPE)\r | |
3432 | {\r | |
3433 | /* REPE */\r | |
3434 | /* move them until CX is ZERO. */\r | |
3435 | while (m->R_CX != 0)\r | |
3436 | {\r | |
3437 | val2 = fetch_data_word_abs(m,m->R_ES,m->R_DI);\r | |
3438 | cmp_word(m,m->R_AX,val2);\r | |
3439 | m->R_CX -= 1;\r | |
3440 | m->R_DI += inc;\r | |
3441 | if (ACCESS_FLAG(m,F_ZF)==0) break;\r | |
3442 | }\r | |
3443 | m->sysmode &= ~SYSMODE_PREFIX_REPE;\r | |
3444 | }\r | |
3445 | else if (m->sysmode & SYSMODE_PREFIX_REPNE)\r | |
3446 | {\r | |
3447 | /* REPNE */\r | |
3448 | /* move them until CX is ZERO. */\r | |
3449 | while (m->R_CX != 0)\r | |
3450 | {\r | |
3451 | val2 = fetch_data_word_abs(m,m->R_ES,m->R_DI);\r | |
3452 | cmp_word(m, m->R_AX,val2);\r | |
3453 | m->R_CX -= 1;\r | |
3454 | m->R_DI += inc;\r | |
3455 | if (ACCESS_FLAG(m,F_ZF)) break; /* zero flag set means equal */\r | |
3456 | }\r | |
3457 | m->sysmode &= ~SYSMODE_PREFIX_REPNE;\r | |
3458 | }\r | |
3459 | else\r | |
3460 | {\r | |
3461 | val2 = fetch_data_word_abs(m,m->R_ES,m->R_DI);\r | |
3462 | cmp_word(m, m->R_AX,val2);\r | |
3463 | m->R_DI += inc;\r | |
3464 | }\r | |
3465 | DECODE_CLEAR_SEGOVR(m);\r | |
3466 | }\r | |
3467 | \r | |
3468 | /*opcode=0xb0*/\r | |
3469 | static void i86op_mov_byte_AL_IMM(PC_ENV *m)\r | |
3470 | {\r | |
3471 | uint8 imm;\r | |
3472 | imm = fetch_byte_imm(m);\r | |
3473 | m->R_AL = imm;\r | |
3474 | DECODE_CLEAR_SEGOVR(m);\r | |
3475 | }\r | |
3476 | \r | |
3477 | /*opcode=0xb1*/\r | |
3478 | static void i86op_mov_byte_CL_IMM(PC_ENV *m)\r | |
3479 | {\r | |
3480 | uint8 imm;\r | |
3481 | imm = fetch_byte_imm(m);\r | |
3482 | m->R_CL = imm;\r | |
3483 | DECODE_CLEAR_SEGOVR(m);\r | |
3484 | }\r | |
3485 | \r | |
3486 | /*opcode=0xb2*/\r | |
3487 | static void i86op_mov_byte_DL_IMM(PC_ENV *m)\r | |
3488 | {\r | |
3489 | uint8 imm;\r | |
3490 | imm = fetch_byte_imm(m);\r | |
3491 | m->R_DL = imm;\r | |
3492 | DECODE_CLEAR_SEGOVR(m);\r | |
3493 | }\r | |
3494 | \r | |
3495 | /*opcode=0xb3*/\r | |
3496 | static void i86op_mov_byte_BL_IMM(PC_ENV *m)\r | |
3497 | {\r | |
3498 | uint8 imm;\r | |
3499 | imm = fetch_byte_imm(m);\r | |
3500 | m->R_BL = imm;\r | |
3501 | DECODE_CLEAR_SEGOVR(m);\r | |
3502 | }\r | |
3503 | \r | |
3504 | /*opcode=0xb4*/\r | |
3505 | static void i86op_mov_byte_AH_IMM(PC_ENV *m)\r | |
3506 | {\r | |
3507 | uint8 imm;\r | |
3508 | imm = fetch_byte_imm(m);\r | |
3509 | m->R_AH = imm;\r | |
3510 | DECODE_CLEAR_SEGOVR(m);\r | |
3511 | }\r | |
3512 | \r | |
3513 | /*opcode=0xb5*/\r | |
3514 | static void i86op_mov_byte_CH_IMM(PC_ENV *m)\r | |
3515 | {\r | |
3516 | uint8 imm;\r | |
3517 | imm = fetch_byte_imm(m);\r | |
3518 | m->R_CH = imm;\r | |
3519 | DECODE_CLEAR_SEGOVR(m);\r | |
3520 | }\r | |
3521 | \r | |
3522 | /*opcode=0xb6*/\r | |
3523 | static void i86op_mov_byte_DH_IMM(PC_ENV *m)\r | |
3524 | {\r | |
3525 | uint8 imm;\r | |
3526 | imm = fetch_byte_imm(m);\r | |
3527 | m->R_DH = imm;\r | |
3528 | DECODE_CLEAR_SEGOVR(m);\r | |
3529 | }\r | |
3530 | \r | |
3531 | /*opcode=0xb7*/\r | |
3532 | static void i86op_mov_byte_BH_IMM(PC_ENV *m)\r | |
3533 | {\r | |
3534 | uint8 imm;\r | |
3535 | imm = fetch_byte_imm(m);\r | |
3536 | m->R_BH = imm;\r | |
3537 | DECODE_CLEAR_SEGOVR(m);\r | |
3538 | }\r | |
3539 | \r | |
3540 | /*opcode=0xb8*/\r | |
3541 | static void i86op_mov_word_AX_IMM(PC_ENV *m)\r | |
3542 | {\r | |
3543 | uint16 imm;\r | |
3544 | imm = fetch_word_imm(m);\r | |
3545 | m->R_AX = imm;\r | |
3546 | DECODE_CLEAR_SEGOVR(m);\r | |
3547 | }\r | |
3548 | \r | |
3549 | /*opcode=0xb9*/\r | |
3550 | static void i86op_mov_word_CX_IMM(PC_ENV *m)\r | |
3551 | {\r | |
3552 | uint16 imm;\r | |
3553 | imm = fetch_word_imm(m);\r | |
3554 | m->R_CX = imm;\r | |
3555 | DECODE_CLEAR_SEGOVR(m);\r | |
3556 | }\r | |
3557 | \r | |
3558 | /*opcode=0xba*/\r | |
3559 | static void i86op_mov_word_DX_IMM(PC_ENV *m)\r | |
3560 | {\r | |
3561 | uint16 imm;\r | |
3562 | imm = fetch_word_imm(m);\r | |
3563 | m->R_DX = imm;\r | |
3564 | DECODE_CLEAR_SEGOVR(m);\r | |
3565 | }\r | |
3566 | \r | |
3567 | /*opcode=0xbb*/\r | |
3568 | static void i86op_mov_word_BX_IMM(PC_ENV *m)\r | |
3569 | {\r | |
3570 | uint16 imm;\r | |
3571 | imm = fetch_word_imm(m);\r | |
3572 | m->R_BX = imm;\r | |
3573 | DECODE_CLEAR_SEGOVR(m);\r | |
3574 | }\r | |
3575 | \r | |
3576 | /*opcode=0xbc*/\r | |
3577 | static void i86op_mov_word_SP_IMM(PC_ENV *m)\r | |
3578 | {\r | |
3579 | uint16 imm;\r | |
3580 | imm = fetch_word_imm(m);\r | |
3581 | m->R_SP = imm;\r | |
3582 | DECODE_CLEAR_SEGOVR(m);\r | |
3583 | }\r | |
3584 | \r | |
3585 | /*opcode=0xbd*/\r | |
3586 | static void i86op_mov_word_BP_IMM(PC_ENV *m)\r | |
3587 | {\r | |
3588 | uint16 imm;\r | |
3589 | imm = fetch_word_imm(m);\r | |
3590 | m->R_BP = imm;\r | |
3591 | DECODE_CLEAR_SEGOVR(m);\r | |
3592 | }\r | |
3593 | \r | |
3594 | /*opcode=0xbe*/\r | |
3595 | static void i86op_mov_word_SI_IMM(PC_ENV *m)\r | |
3596 | {\r | |
3597 | uint16 imm;\r | |
3598 | imm = fetch_word_imm(m);\r | |
3599 | m->R_SI = imm;\r | |
3600 | DECODE_CLEAR_SEGOVR(m);\r | |
3601 | }\r | |
3602 | \r | |
3603 | /*opcode=0xbf*/\r | |
3604 | static void i86op_mov_word_DI_IMM(PC_ENV *m)\r | |
3605 | {\r | |
3606 | uint16 imm;\r | |
3607 | imm = fetch_word_imm(m);\r | |
3608 | m->R_DI = imm;\r | |
3609 | DECODE_CLEAR_SEGOVR(m);\r | |
3610 | }\r | |
3611 | \r | |
3612 | /* c0 === ILLEGAL OPERAND */\r | |
3613 | /* c1 === ILLEGAL OPERAND */\r | |
3614 | \r | |
3615 | /*opcode=0xc2*/\r | |
3616 | static void i86op_ret_near_IMM(PC_ENV *m)\r | |
3617 | {\r | |
3618 | uint16 imm;\r | |
3619 | imm = fetch_word_imm(m);\r | |
3620 | m->R_IP = pop_word(m);\r | |
3621 | m->R_SP += imm;\r | |
3622 | DECODE_CLEAR_SEGOVR(m);\r | |
3623 | }\r | |
3624 | \r | |
3625 | /*opcode=0xc3*/\r | |
3626 | static void i86op_ret_near(PC_ENV *m)\r | |
3627 | {\r | |
3628 | m->R_IP = pop_word(m);\r | |
3629 | DECODE_CLEAR_SEGOVR(m);\r | |
3630 | }\r | |
3631 | \r | |
3632 | /*opcode=0xc4*/\r | |
3633 | static void i86op_les_R_IMM(PC_ENV *m)\r | |
3634 | {\r | |
3635 | uint16 mod,rh,rl;\r | |
3636 | uint16 *dstreg;\r | |
3637 | uint16 srcoffset;\r | |
3638 | FETCH_DECODE_MODRM(m,mod,rh,rl);\r | |
3639 | switch (mod)\r | |
3640 | {\r | |
3641 | case 0:\r | |
3642 | dstreg = DECODE_RM_WORD_REGISTER(m,rh);\r | |
3643 | srcoffset=decode_rm00_address(m,rl);\r | |
3644 | *dstreg = fetch_data_word(m,srcoffset);\r | |
3645 | m->R_ES = fetch_data_word(m,srcoffset+2);\r | |
3646 | break;\r | |
3647 | case 1:\r | |
3648 | dstreg = DECODE_RM_WORD_REGISTER(m,rh);\r | |
3649 | srcoffset=decode_rm01_address(m,rl);\r | |
3650 | *dstreg = fetch_data_word(m,srcoffset);\r | |
3651 | m->R_ES = fetch_data_word(m,srcoffset+2);\r | |
3652 | break;\r | |
3653 | case 2:\r | |
3654 | dstreg = DECODE_RM_WORD_REGISTER(m,rh);\r | |
3655 | srcoffset=decode_rm10_address(m,rl);\r | |
3656 | *dstreg = fetch_data_word(m,srcoffset);\r | |
3657 | m->R_ES = fetch_data_word(m,srcoffset+2);\r | |
3658 | break;\r | |
3659 | case 3: /* register to register */\r | |
3660 | /* UNDEFINED! */\r | |
3661 | ;\r | |
3662 | }\r | |
3663 | DECODE_CLEAR_SEGOVR(m);\r | |
3664 | }\r | |
3665 | \r | |
3666 | /*opcode=0xc5*/\r | |
3667 | static void i86op_lds_R_IMM(PC_ENV *m)\r | |
3668 | {\r | |
3669 | uint16 mod,rh,rl;\r | |
3670 | uint16 *dstreg;\r | |
3671 | uint16 srcoffset;\r | |
3672 | FETCH_DECODE_MODRM(m,mod,rh,rl);\r | |
3673 | switch (mod)\r | |
3674 | {\r | |
3675 | case 0:\r | |
3676 | dstreg = DECODE_RM_WORD_REGISTER(m,rh);\r | |
3677 | srcoffset=decode_rm00_address(m,rl);\r | |
3678 | *dstreg = fetch_data_word(m,srcoffset);\r | |
3679 | m->R_DS = fetch_data_word(m,srcoffset+2);\r | |
3680 | break;\r | |
3681 | case 1:\r | |
3682 | dstreg = DECODE_RM_WORD_REGISTER(m,rh);\r | |
3683 | srcoffset=decode_rm01_address(m,rl);\r | |
3684 | *dstreg = fetch_data_word(m,srcoffset);\r | |
3685 | m->R_DS = fetch_data_word(m,srcoffset+2);\r | |
3686 | break;\r | |
3687 | case 2:\r | |
3688 | dstreg = DECODE_RM_WORD_REGISTER(m,rh);\r | |
3689 | srcoffset=decode_rm10_address(m,rl);\r | |
3690 | *dstreg = fetch_data_word(m,srcoffset);\r | |
3691 | m->R_DS = fetch_data_word(m,srcoffset+2);\r | |
3692 | break;\r | |
3693 | case 3: /* register to register */\r | |
3694 | /* UNDEFINED! */\r | |
3695 | ;\r | |
3696 | }\r | |
3697 | DECODE_CLEAR_SEGOVR(m);\r | |
3698 | }\r | |
3699 | \r | |
3700 | /*opcode=0xc6*/\r | |
3701 | static void i86op_mov_byte_RM_IMM(PC_ENV *m)\r | |
3702 | {\r | |
3703 | uint16 mod,rl,rh;\r | |
3704 | uint8 *destreg;\r | |
3705 | uint16 destoffset;\r | |
3706 | uint8 imm;\r | |
3707 | FETCH_DECODE_MODRM(m,mod,rh,rl);\r | |
3708 | if (rh != 0)\r | |
3709 | {\r | |
3710 | halt_sys(m);\r | |
3711 | }\r | |
3712 | switch (mod)\r | |
3713 | {\r | |
3714 | case 0:\r | |
3715 | destoffset=decode_rm00_address(m,rl);\r | |
3716 | imm = fetch_byte_imm(m);\r | |
3717 | store_data_byte(m,destoffset,imm);\r | |
3718 | break;\r | |
3719 | case 1:\r | |
3720 | destoffset=decode_rm01_address(m,rl);\r | |
3721 | imm = fetch_byte_imm(m);\r | |
3722 | store_data_byte(m,destoffset,imm);\r | |
3723 | break;\r | |
3724 | case 2:\r | |
3725 | destoffset=decode_rm10_address(m,rl);\r | |
3726 | imm = fetch_byte_imm(m);\r | |
3727 | store_data_byte(m,destoffset,imm);\r | |
3728 | break;\r | |
3729 | case 3: /* register to register */\r | |
3730 | destreg = DECODE_RM_BYTE_REGISTER(m,rl);\r | |
3731 | imm = fetch_byte_imm(m);\r | |
3732 | *destreg = imm;\r | |
3733 | break;\r | |
3734 | }\r | |
3735 | DECODE_CLEAR_SEGOVR(m);\r | |
3736 | }\r | |
3737 | \r | |
3738 | /*opcode=0xc7*/\r | |
3739 | static void i86op_mov_word_RM_IMM(PC_ENV *m)\r | |
3740 | {\r | |
3741 | uint16 mod,rl,rh;\r | |
3742 | uint16 *destreg;\r | |
3743 | uint16 destoffset;\r | |
3744 | uint16 imm;\r | |
3745 | FETCH_DECODE_MODRM(m,mod,rh,rl);\r | |
3746 | if (rh != 0)\r | |
3747 | {\r | |
3748 | halt_sys(m);\r | |
3749 | }\r | |
3750 | switch (mod)\r | |
3751 | {\r | |
3752 | case 0:\r | |
3753 | destoffset=decode_rm00_address(m,rl);\r | |
3754 | imm = fetch_word_imm(m);\r | |
3755 | store_data_word(m,destoffset,imm);\r | |
3756 | break;\r | |
3757 | case 1:\r | |
3758 | destoffset=decode_rm01_address(m,rl);\r | |
3759 | imm = fetch_word_imm(m);\r | |
3760 | store_data_word(m,destoffset,imm);\r | |
3761 | break;\r | |
3762 | case 2:\r | |
3763 | destoffset=decode_rm10_address(m,rl);\r | |
3764 | imm = fetch_word_imm(m);\r | |
3765 | store_data_word(m,destoffset,imm);\r | |
3766 | break;\r | |
3767 | case 3: /* register to register */\r | |
3768 | destreg = DECODE_RM_WORD_REGISTER(m,rl);\r | |
3769 | imm = fetch_word_imm(m);\r | |
3770 | *destreg = imm;\r | |
3771 | break;\r | |
3772 | }\r | |
3773 | DECODE_CLEAR_SEGOVR(m);\r | |
3774 | }\r | |
3775 | \r | |
3776 | /*opcode=0xc8 ILLEGAL OP*/\r | |
3777 | /*opcode=0xc9 ILLEGAL OP*/\r | |
3778 | \r | |
3779 | /*opcode=0xca*/\r | |
3780 | static void i86op_ret_far_IMM(PC_ENV *m)\r | |
3781 | {\r | |
3782 | uint16 imm;\r | |
3783 | imm = fetch_word_imm(m);\r | |
3784 | m->R_IP = pop_word(m);\r | |
3785 | m->R_CS = pop_word(m);\r | |
3786 | m->R_SP += imm;\r | |
3787 | DECODE_CLEAR_SEGOVR(m);\r | |
3788 | }\r | |
3789 | \r | |
3790 | /*opcode=0xcb*/\r | |
3791 | static void i86op_ret_far(PC_ENV *m)\r | |
3792 | {\r | |
3793 | m->R_IP = pop_word(m);\r | |
3794 | m->R_CS = pop_word(m);\r | |
3795 | DECODE_CLEAR_SEGOVR(m);\r | |
3796 | }\r | |
3797 | \r | |
3798 | /* opcode=0xcc*/\r | |
3799 | static void i86op_int3(PC_ENV *m)\r | |
3800 | {\r | |
3801 | uint16 tmp;\r | |
3802 | tmp = (uint16) mem_access_word(m, 3 * 4);\r | |
3803 | /* access the segment register */\r | |
3804 | {\r | |
3805 | tmp = m->R_FLG;\r | |
3806 | push_word(m, tmp);\r | |
3807 | CLEAR_FLAG(m, F_IF);\r | |
3808 | CLEAR_FLAG(m, F_TF);\r | |
3809 | /* [JCE] If we're interrupting between a segment override (or REP override)\r | |
3810 | * and the following instruction, decrease IP to get back to the prefix */\r | |
3811 | if (m->sysmode & (SYSMODE_SEGMASK |\r | |
3812 | SYSMODE_PREFIX_REPE |\r | |
3813 | SYSMODE_PREFIX_REPNE))\r | |
3814 | {\r | |
3815 | --m->R_IP;\r | |
3816 | }\r | |
3817 | push_word(m, m->R_CS);\r | |
3818 | push_word(m, m->R_IP);\r | |
3819 | /* [JCE] CS and IP were the wrong way round... */\r | |
3820 | tmp = mem_access_word(m, 3 * 4);\r | |
3821 | m->R_IP = tmp;\r | |
3822 | tmp = mem_access_word(m, 3 * 4 + 2);\r | |
3823 | m->R_CS = tmp;\r | |
3824 | }\r | |
3825 | DECODE_CLEAR_SEGOVR(m);\r | |
3826 | }\r | |
3827 | \r | |
3828 | /* opcode=0xcd*/\r | |
3829 | static void i86op_int_IMM(PC_ENV *m)\r | |
3830 | {\r | |
3831 | uint16 tmp;\r | |
3832 | uint8 intnum;\r | |
3833 | intnum = fetch_byte_imm(m);\r | |
3834 | tmp = mem_access_word(m, intnum * 4);\r | |
3835 | {\r | |
3836 | tmp = m->R_FLG;\r | |
3837 | push_word(m, tmp);\r | |
3838 | CLEAR_FLAG(m, F_IF);\r | |
3839 | CLEAR_FLAG(m, F_TF);\r | |
3840 | /* [JCE] If we're interrupting between a segment override (or REP override)\r | |
3841 | * and the following instruction, decrease IP to get back to the prefix */\r | |
3842 | if (m->sysmode & (SYSMODE_SEGMASK |\r | |
3843 | SYSMODE_PREFIX_REPE |\r | |
3844 | SYSMODE_PREFIX_REPNE))\r | |
3845 | {\r | |
3846 | --m->R_IP;\r | |
3847 | }\r | |
3848 | push_word(m, m->R_CS);\r | |
3849 | push_word(m, m->R_IP);\r | |
3850 | /* [JCE] CS and IP were the wrong way round... */\r | |
3851 | tmp = mem_access_word(m, intnum * 4);\r | |
3852 | m->R_IP = tmp;\r | |
3853 | tmp = mem_access_word(m, intnum * 4 + 2);\r | |
3854 | m->R_CS = tmp;\r | |
3855 | }\r | |
3856 | DECODE_CLEAR_SEGOVR(m);\r | |
3857 | }\r | |
3858 | \r | |
3859 | /* opcode=0xce*/\r | |
3860 | static void i86op_into(PC_ENV *m)\r | |
3861 | {\r | |
3862 | uint16 tmp;\r | |
3863 | if (ACCESS_FLAG(m,F_OF))\r | |
3864 | {\r | |
3865 | tmp = mem_access_word(m, 4 * 4);\r | |
3866 | {\r | |
3867 | tmp = m->R_FLG;\r | |
3868 | push_word(m, tmp);\r | |
3869 | CLEAR_FLAG(m, F_IF);\r | |
3870 | CLEAR_FLAG(m, F_TF);\r | |
3871 | /* [JCE] If we're interrupting between a segment override (or REP override)\r | |
3872 | * and the following instruction, decrease IP to get back to the prefix */\r | |
3873 | if (m->sysmode & (SYSMODE_SEGMASK |\r | |
3874 | SYSMODE_PREFIX_REPE |\r | |
3875 | SYSMODE_PREFIX_REPNE))\r | |
3876 | {\r | |
3877 | --m->R_IP;\r | |
3878 | }\r | |
3879 | push_word(m, m->R_CS);\r | |
3880 | push_word(m, m->R_IP);\r | |
3881 | /* [JCE] CS and IP were the wrong way round... */\r | |
3882 | tmp = mem_access_word(m, 4 * 4);\r | |
3883 | m->R_IP = tmp;\r | |
3884 | tmp = mem_access_word(m, 4 * 4 + 2);\r | |
3885 | m->R_CS = tmp;\r | |
3886 | }\r | |
3887 | }\r | |
3888 | DECODE_CLEAR_SEGOVR(m);\r | |
3889 | }\r | |
3890 | \r | |
3891 | /* opcode=0xcf*/\r | |
3892 | static void i86op_iret(PC_ENV *m)\r | |
3893 | {\r | |
3894 | m->R_IP = pop_word(m);\r | |
3895 | m->R_CS = pop_word(m);\r | |
3896 | m->R_FLG = pop_word(m);\r | |
3897 | DECODE_CLEAR_SEGOVR(m);\r | |
3898 | }\r | |
3899 | \r | |
3900 | static uint8 (*opcD0_byte_operation[])(PC_ENV *m,uint8 d, uint8 s) =\r | |
3901 | /* used by opcodes d0 and d2. */\r | |
3902 | {\r | |
3903 | rol_byte,\r | |
3904 | ror_byte,\r | |
3905 | rcl_byte,\r | |
3906 | rcr_byte,\r | |
3907 | shl_byte,\r | |
3908 | shr_byte,\r | |
3909 | shl_byte, /* sal_byte === shl_byte by definition */\r | |
3910 | sar_byte,\r | |
3911 | };\r | |
3912 | \r | |
3913 | /* opcode=0xd0*/\r | |
3914 | static void i86op_opcD0_byte_RM_1(PC_ENV *m)\r | |
3915 | {\r | |
3916 | uint16 mod,rl,rh;\r | |
3917 | uint8 *destreg;\r | |
3918 | uint16 destoffset;\r | |
3919 | uint8 destval;\r | |
3920 | /* Yet another weirdo special case instruction format. Part of the\r | |
3921 | opcode held below in "RH". Doubly nested case would\r | |
3922 | result, except that the decoded instruction\r | |
3923 | */\r | |
3924 | FETCH_DECODE_MODRM(m,mod,rh,rl);\r | |
3925 | /* know operation, decode the mod byte to find the addressing\r | |
3926 | mode. */\r | |
3927 | switch (mod)\r | |
3928 | {\r | |
3929 | case 0:\r | |
3930 | destoffset=decode_rm00_address(m,rl);\r | |
3931 | destval = fetch_data_byte(m,destoffset);\r | |
3932 | destval = (*opcD0_byte_operation[rh])(m, destval,1);\r | |
3933 | store_data_byte(m,destoffset,destval);\r | |
3934 | break;\r | |
3935 | case 1:\r | |
3936 | destoffset=decode_rm01_address(m,rl);\r | |
3937 | destval = fetch_data_byte(m,destoffset);\r | |
3938 | destval = (*opcD0_byte_operation[rh])(m, destval, 1);\r | |
3939 | store_data_byte(m,destoffset,destval);\r | |
3940 | break;\r | |
3941 | case 2:\r | |
3942 | destoffset=decode_rm10_address(m,rl);\r | |
3943 | destval = fetch_data_byte(m,destoffset);\r | |
3944 | destval = (*opcD0_byte_operation[rh])(m, destval, 1);\r | |
3945 | store_data_byte(m,destoffset,destval);\r | |
3946 | break;\r | |
3947 | case 3: /* register to register */\r | |
3948 | destreg = DECODE_RM_BYTE_REGISTER(m,rl);\r | |
3949 | destval = (*opcD0_byte_operation[rh])(m, *destreg, 1);\r | |
3950 | *destreg = destval;\r | |
3951 | break;\r | |
3952 | }\r | |
3953 | DECODE_CLEAR_SEGOVR(m);\r | |
3954 | }\r | |
3955 | \r | |
3956 | static uint16 (*opcD1_word_operation[])(PC_ENV *m,uint16 s,uint16 d) =\r | |
3957 | /* used by opcodes d1 and d3. */\r | |
3958 | { rol_word,\r | |
3959 | ror_word,\r | |
3960 | rcl_word,\r | |
3961 | rcr_word,\r | |
3962 | shl_word,\r | |
3963 | shr_word,\r | |
3964 | shl_word, /* sal_byte === shl_byte by definition */\r | |
3965 | sar_word,\r | |
3966 | };\r | |
3967 | \r | |
3968 | /* opcode=0xd1*/\r | |
3969 | static void i86op_opcD1_word_RM_1(PC_ENV *m)\r | |
3970 | {\r | |
3971 | uint16 mod,rl,rh;\r | |
3972 | uint16 *destreg;\r | |
3973 | uint16 destoffset;\r | |
3974 | uint16 destval;\r | |
3975 | /* Yet another weirdo special case instruction format. Part of the\r | |
3976 | opcode held below in "RH". Doubly nested case would\r | |
3977 | result, except that the decoded instruction\r | |
3978 | */\r | |
3979 | FETCH_DECODE_MODRM(m,mod,rh,rl);\r | |
3980 | /* know operation, decode the mod byte to find the addressing\r | |
3981 | mode. */\r | |
3982 | switch (mod)\r | |
3983 | {\r | |
3984 | case 0:\r | |
3985 | destoffset=decode_rm00_address(m,rl);\r | |
3986 | destval = fetch_data_word(m,destoffset);\r | |
3987 | destval = (*opcD1_word_operation[rh])(m, destval,1);\r | |
3988 | store_data_word(m,destoffset,destval);\r | |
3989 | break;\r | |
3990 | case 1:\r | |
3991 | destoffset=decode_rm01_address(m,rl);\r | |
3992 | destval = fetch_data_word(m,destoffset);\r | |
3993 | destval = (*opcD1_word_operation[rh])(m, destval, 1);\r | |
3994 | store_data_word(m,destoffset,destval);\r | |
3995 | break;\r | |
3996 | case 2:\r | |
3997 | destoffset=decode_rm10_address(m,rl);\r | |
3998 | destval = fetch_data_word(m,destoffset);\r | |
3999 | destval = (*opcD1_word_operation[rh])(m, destval, 1);\r | |
4000 | store_data_word(m,destoffset,destval);\r | |
4001 | break;\r | |
4002 | case 3: /* register to register */\r | |
4003 | destreg = DECODE_RM_WORD_REGISTER(m,rl);\r | |
4004 | destval = (*opcD1_word_operation[rh])(m, *destreg, 1);\r | |
4005 | *destreg = destval;\r | |
4006 | break;\r | |
4007 | }\r | |
4008 | DECODE_CLEAR_SEGOVR(m);\r | |
4009 | }\r | |
4010 | \r | |
4011 | /* opcode=0xd2*/\r | |
4012 | static void i86op_opcD2_byte_RM_CL(PC_ENV *m)\r | |
4013 | {\r | |
4014 | uint16 mod,rl,rh;\r | |
4015 | uint8 *destreg;\r | |
4016 | uint16 destoffset;\r | |
4017 | uint8 destval;\r | |
4018 | uint8 amt;\r | |
4019 | /* Yet another weirdo special case instruction format. Part of the\r | |
4020 | opcode held below in "RH". Doubly nested case would\r | |
4021 | result, except that the decoded instruction\r | |
4022 | */\r | |
4023 | FETCH_DECODE_MODRM(m,mod,rh,rl);\r | |
4024 | amt = m->R_CL;\r | |
4025 | /* know operation, decode the mod byte to find the addressing\r | |
4026 | mode. */\r | |
4027 | switch (mod)\r | |
4028 | {\r | |
4029 | case 0:\r | |
4030 | destoffset=decode_rm00_address(m,rl);\r | |
4031 | destval = fetch_data_byte(m,destoffset);\r | |
4032 | destval = (*opcD0_byte_operation[rh])(m, destval,amt);\r | |
4033 | store_data_byte(m,destoffset,destval);\r | |
4034 | break;\r | |
4035 | case 1:\r | |
4036 | destoffset=decode_rm01_address(m,rl);\r | |
4037 | destval = fetch_data_byte(m,destoffset);\r | |
4038 | destval = (*opcD0_byte_operation[rh])(m, destval, amt);\r | |
4039 | store_data_byte(m,destoffset,destval);\r | |
4040 | break;\r | |
4041 | case 2:\r | |
4042 | destoffset=decode_rm10_address(m,rl);\r | |
4043 | destval = fetch_data_byte(m,destoffset);\r | |
4044 | destval = (*opcD0_byte_operation[rh])(m, destval, amt);\r | |
4045 | store_data_byte(m,destoffset,destval);\r | |
4046 | break;\r | |
4047 | case 3: /* register to register */\r | |
4048 | destreg = DECODE_RM_BYTE_REGISTER(m,rl);\r | |
4049 | destval = (*opcD0_byte_operation[rh])(m, *destreg, amt);\r | |
4050 | *destreg = destval;\r | |
4051 | break;\r | |
4052 | }\r | |
4053 | DECODE_CLEAR_SEGOVR(m);\r | |
4054 | }\r | |
4055 | \r | |
4056 | /* opcode=0xd3*/\r | |
4057 | static void i86op_opcD3_word_RM_CL(PC_ENV *m)\r | |
4058 | {\r | |
4059 | uint16 mod,rl,rh;\r | |
4060 | uint16 *destreg;\r | |
4061 | uint16 destoffset;\r | |
4062 | uint16 destval;\r | |
4063 | uint8 amt;\r | |
4064 | /* Yet another weirdo special case instruction format. Part of the\r | |
4065 | opcode held below in "RH". Doubly nested case would\r | |
4066 | result, except that the decoded instruction\r | |
4067 | */\r | |
4068 | FETCH_DECODE_MODRM(m,mod,rh,rl);\r | |
4069 | amt = m->R_CL;\r | |
4070 | /* know operation, decode the mod byte to find the addressing\r | |
4071 | mode. */\r | |
4072 | switch (mod)\r | |
4073 | {\r | |
4074 | case 0:\r | |
4075 | destoffset=decode_rm00_address(m,rl);\r | |
4076 | destval = fetch_data_word(m,destoffset);\r | |
4077 | destval = (*opcD1_word_operation[rh])(m, destval, amt);\r | |
4078 | store_data_word(m,destoffset,destval);\r | |
4079 | break;\r | |
4080 | case 1:\r | |
4081 | destoffset=decode_rm01_address(m,rl);\r | |
4082 | destval = fetch_data_word(m,destoffset);\r | |
4083 | destval = (*opcD1_word_operation[rh])(m, destval, amt);\r | |
4084 | store_data_word(m,destoffset,destval);\r | |
4085 | break;\r | |
4086 | case 2:\r | |
4087 | destoffset=decode_rm10_address(m,rl);\r | |
4088 | destval = fetch_data_word(m,destoffset);\r | |
4089 | destval = (*opcD1_word_operation[rh])(m, destval, amt);\r | |
4090 | store_data_word(m,destoffset,destval);\r | |
4091 | break;\r | |
4092 | case 3: /* register to register */\r | |
4093 | destreg = DECODE_RM_WORD_REGISTER(m,rl);\r | |
4094 | *destreg = (*opcD1_word_operation[rh])(m, *destreg, amt);\r | |
4095 | break;\r | |
4096 | }\r | |
4097 | DECODE_CLEAR_SEGOVR(m);\r | |
4098 | }\r | |
4099 | \r | |
4100 | static void sys_fatal(int error, char *fmt, ...)\r | |
4101 | {\r | |
4102 | va_list p;\r | |
4103 | va_start(p, fmt);\r | |
4104 | fprintf(stderr, "Fatal error: ");\r | |
4105 | if (error != 0)\r | |
4106 | {\r | |
4107 | fprintf(stderr, "<%d>",error);\r | |
4108 | fprintf(stderr,"%s",strerror(error));\r | |
4109 | }\r | |
4110 | vfprintf(stderr, fmt, p);\r | |
4111 | va_end(p);\r | |
4112 | fprintf(stderr, NLP "Exiting..." NLP);\r | |
4113 | exit(1);\r | |
4114 | }\r | |
4115 | \r | |
4116 | /* opcode=0xd4*/\r | |
4117 | static void i86op_aam(PC_ENV *m)\r | |
4118 | { uint8 a;\r | |
4119 | a = fetch_byte_imm(m); /* this is a stupid encoding. */\r | |
4120 | if (a != 10) sys_fatal(0,"error decoding aam" NLP);\r | |
4121 | /* note the type change here --- returning AL and AH in AX. */\r | |
4122 | m->R_AX = aam_word(m,m->R_AL);\r | |
4123 | DECODE_CLEAR_SEGOVR(m);\r | |
4124 | }\r | |
4125 | \r | |
4126 | /* opcode=0xd5*/\r | |
4127 | static void i86op_aad(PC_ENV *m)\r | |
4128 | { uint8 a;\r | |
4129 | a = fetch_byte_imm(m);\r | |
4130 | m->R_AX = aad_word(m,m->R_AX);\r | |
4131 | DECODE_CLEAR_SEGOVR(m);\r | |
4132 | }\r | |
4133 | \r | |
4134 | /* opcode=0xd6 ILLEGAL OPCODE */\r | |
4135 | \r | |
4136 | /* opcode=0xd7 */\r | |
4137 | static void i86op_xlat(PC_ENV *m)\r | |
4138 | {\r | |
4139 | uint16 addr;\r | |
4140 | addr = m->R_BX + (uint8)m->R_AL;\r | |
4141 | m->R_AL = fetch_data_byte(m,addr);\r | |
4142 | DECODE_CLEAR_SEGOVR(m);\r | |
4143 | }\r | |
4144 | \r | |
4145 | /*opcode=0xe0*/\r | |
4146 | static void i86op_loopne(PC_ENV *m)\r | |
4147 | {\r | |
4148 | int16 ip;\r | |
4149 | ip = (int8)fetch_byte_imm(m);\r | |
4150 | ip += (int16)m->R_IP;\r | |
4151 | m->R_CX -= 1;\r | |
4152 | if (m->R_CX != 0 && !ACCESS_FLAG(m,F_ZF)) /* CX != 0 and !ZF */\r | |
4153 | m->R_IP = ip;\r | |
4154 | DECODE_CLEAR_SEGOVR(m);\r | |
4155 | }\r | |
4156 | \r | |
4157 | /*opcode=0xe1*/\r | |
4158 | static void i86op_loope(PC_ENV *m)\r | |
4159 | {\r | |
4160 | int16 ip;\r | |
4161 | ip = (int8)fetch_byte_imm(m);\r | |
4162 | ip += (int16)m->R_IP;\r | |
4163 | m->R_CX -= 1;\r | |
4164 | if (m->R_CX != 0 && ACCESS_FLAG(m,F_ZF)) /* CX != 0 and ZF */\r | |
4165 | m->R_IP = ip;\r | |
4166 | DECODE_CLEAR_SEGOVR(m);\r | |
4167 | }\r | |
4168 | \r | |
4169 | /*opcode=0xe2*/\r | |
4170 | static void i86op_loop(PC_ENV *m)\r | |
4171 | {\r | |
4172 | int16 ip;\r | |
4173 | ip = (int8)fetch_byte_imm(m);\r | |
4174 | ip += (int16)m->R_IP;\r | |
4175 | m->R_CX -= 1;\r | |
4176 | if (m->R_CX != 0)\r | |
4177 | m->R_IP = ip;\r | |
4178 | DECODE_CLEAR_SEGOVR(m);\r | |
4179 | }\r | |
4180 | \r | |
4181 | /*opcode=0xe3*/\r | |
4182 | static void i86op_jcxz(PC_ENV *m)\r | |
4183 | {\r | |
4184 | int16 offset,target;\r | |
4185 | /* jump to byte offset if overflow flag is set */\r | |
4186 | offset = (int8)fetch_byte_imm(m); /* sign extended ??? */\r | |
4187 | target = (int16)m->R_IP + offset;\r | |
4188 | if (m->R_CX == 0)\r | |
4189 | m->R_IP = target;\r | |
4190 | DECODE_CLEAR_SEGOVR(m);\r | |
4191 | }\r | |
4192 | \r | |
4193 | /*opcode=0xe4*/\r | |
4194 | static void i86op_in_byte_AL_IMM(PC_ENV *m)\r | |
4195 | {\r | |
4196 | uint8 port;\r | |
4197 | port = (uint8)fetch_byte_imm(m);\r | |
4198 | m->R_AL = in(port);\r | |
4199 | DECODE_CLEAR_SEGOVR(m);\r | |
4200 | }\r | |
4201 | \r | |
4202 | /*opcode=0xe5*/\r | |
4203 | static void i86op_in_word_AX_IMM(PC_ENV *m)\r | |
4204 | {\r | |
4205 | uint8 port;\r | |
4206 | port = (uint8)fetch_byte_imm(m);\r | |
4207 | m->R_AX = in(port);\r | |
4208 | DECODE_CLEAR_SEGOVR(m);\r | |
4209 | }\r | |
4210 | \r | |
4211 | /*opcode=0xe6*/\r | |
4212 | static void i86op_out_byte_IMM_AL(PC_ENV *m)\r | |
4213 | {\r | |
4214 | uint8 port;\r | |
4215 | port = (uint8)fetch_byte_imm(m);\r | |
4216 | out(port, m->R_AL);\r | |
4217 | DECODE_CLEAR_SEGOVR(m);\r | |
4218 | }\r | |
4219 | \r | |
4220 | /*opcode=0xe7*/\r | |
4221 | static void i86op_out_word_IMM_AX(PC_ENV *m)\r | |
4222 | {\r | |
4223 | uint8 port;\r | |
4224 | port = (uint8)fetch_byte_imm(m);\r | |
4225 | out(port, m->R_AX);\r | |
4226 | DECODE_CLEAR_SEGOVR(m);\r | |
4227 | }\r | |
4228 | \r | |
4229 | /*opcode=0xe8*/\r | |
4230 | static void i86op_call_near_IMM(PC_ENV *m)\r | |
4231 | {\r | |
4232 | int16 ip;\r | |
4233 | /* weird. Thought this was a signed disp! */\r | |
4234 | ip = (int16)fetch_word_imm(m);\r | |
4235 | ip += (int16)m->R_IP; /* CHECK SIGN */\r | |
4236 | push_word(m,m->R_IP);\r | |
4237 | m->R_IP = ip;\r | |
4238 | DECODE_CLEAR_SEGOVR(m);\r | |
4239 | }\r | |
4240 | \r | |
4241 | /*opcode=0xe9*/\r | |
4242 | static void i86op_jump_near_IMM(PC_ENV *m)\r | |
4243 | {\r | |
4244 | int ip;\r | |
4245 | /* weird. Thought this was a signed disp too! */\r | |
4246 | ip = (int16)fetch_word_imm(m);\r | |
4247 | ip += (int16)m->R_IP; /* CHECK SIGN */\r | |
4248 | m->R_IP = ip;\r | |
4249 | DECODE_CLEAR_SEGOVR(m);\r | |
4250 | }\r | |
4251 | \r | |
4252 | /*opcode=0xea*/\r | |
4253 | static void i86op_jump_far_IMM(PC_ENV *m)\r | |
4254 | {\r | |
4255 | uint16 cs,ip;\r | |
4256 | ip = fetch_word_imm(m);\r | |
4257 | cs = fetch_word_imm(m);\r | |
4258 | m->R_IP = ip;\r | |
4259 | m->R_CS = cs;\r | |
4260 | DECODE_CLEAR_SEGOVR(m);\r | |
4261 | }\r | |
4262 | \r | |
4263 | /*opcode=0xeb*/\r | |
4264 | static void i86op_jump_byte_IMM(PC_ENV *m)\r | |
4265 | {\r | |
4266 | int8 offset;\r | |
4267 | uint16 target;\r | |
4268 | offset = (int8) fetch_byte_imm(m); /* CHECK */\r | |
4269 | /* printf("jump byte imm offset=%d\n",offset);*/\r | |
4270 | target = (int16) m->R_IP + offset;\r | |
4271 | m->R_IP = target;\r | |
4272 | DECODE_CLEAR_SEGOVR(m);\r | |
4273 | }\r | |
4274 | \r | |
4275 | /*opcode=0xec*/\r | |
4276 | static void i86op_in_byte_AL_DX(PC_ENV *m)\r | |
4277 | {\r | |
4278 | m->R_AL = in(m->R_DX);\r | |
4279 | DECODE_CLEAR_SEGOVR(m);\r | |
4280 | }\r | |
4281 | \r | |
4282 | /*opcode=0xed*/\r | |
4283 | static void i86op_in_word_AX_DX(PC_ENV *m)\r | |
4284 | {\r | |
4285 | m->R_AX = in(m->R_DX);\r | |
4286 | DECODE_CLEAR_SEGOVR(m);\r | |
4287 | }\r | |
4288 | \r | |
4289 | /*opcode=0xee*/\r | |
4290 | static void i86op_out_byte_DX_AL(PC_ENV *m)\r | |
4291 | {\r | |
4292 | out(m->R_DX, m->R_AL);\r | |
4293 | DECODE_CLEAR_SEGOVR(m);\r | |
4294 | }\r | |
4295 | \r | |
4296 | /*opcode=0xef*/\r | |
4297 | static void i86op_out_word_DX_AX(PC_ENV *m)\r | |
4298 | {\r | |
4299 | out(m->R_DX, m->R_AX);\r | |
4300 | DECODE_CLEAR_SEGOVR(m);\r | |
4301 | }\r | |
4302 | \r | |
4303 | /*opcode=0xf0*/\r | |
4304 | static void i86op_lock(PC_ENV *m)\r | |
4305 | {\r | |
4306 | DECODE_CLEAR_SEGOVR(m);\r | |
4307 | }\r | |
4308 | \r | |
4309 | /*opcode=0xf1 ILLEGAL OPERATION*/\r | |
4310 | \r | |
4311 | /*opcode=0xf2*/\r | |
4312 | static void i86op_repne(PC_ENV *m)\r | |
4313 | {\r | |
4314 | m->sysmode |= SYSMODE_PREFIX_REPNE;\r | |
4315 | DECODE_CLEAR_SEGOVR(m);\r | |
4316 | }\r | |
4317 | \r | |
4318 | /*opcode=0xf3*/\r | |
4319 | static void i86op_repe(PC_ENV *m)\r | |
4320 | {\r | |
4321 | m->sysmode |= SYSMODE_PREFIX_REPE;\r | |
4322 | DECODE_CLEAR_SEGOVR(m);\r | |
4323 | }\r | |
4324 | \r | |
4325 | /*opcode=0xf4*/\r | |
4326 | static void i86op_halt(PC_ENV *m)\r | |
4327 | {\r | |
4328 | halt_sys(m);\r | |
4329 | DECODE_CLEAR_SEGOVR(m);\r | |
4330 | }\r | |
4331 | \r | |
4332 | /*opcode=0xf5*/\r | |
4333 | static void i86op_cmc(PC_ENV *m)\r | |
4334 | {\r | |
4335 | /* complement the carry flag. */\r | |
4336 | TOGGLE_FLAG(m,F_CF);\r | |
4337 | DECODE_CLEAR_SEGOVR(m);\r | |
4338 | }\r | |
4339 | \r | |
4340 | /*opcode=0xf6*/\r | |
4341 | static void i86op_opcF6_byte_RM(PC_ENV *m)\r | |
4342 | {\r | |
4343 | uint16 mod,rl,rh;\r | |
4344 | uint8 *destreg;\r | |
4345 | uint16 destoffset;\r | |
4346 | uint8 destval,srcval;\r | |
4347 | /* long, drawn out code follows. Double switch for a total\r | |
4348 | of 32 cases. */\r | |
4349 | FETCH_DECODE_MODRM(m,mod,rh,rl);\r | |
4350 | switch (mod)\r | |
4351 | {\r | |
4352 | case 0: /* mod=00 */\r | |
4353 | switch(rh)\r | |
4354 | {\r | |
4355 | case 0: /* test byte imm */\r | |
4356 | destoffset=decode_rm00_address(m,rl);\r | |
4357 | srcval = fetch_byte_imm(m);\r | |
4358 | destval = fetch_data_byte(m,destoffset);\r | |
4359 | test_byte(m, destval, srcval);\r | |
4360 | break;\r | |
4361 | case 1:\r | |
4362 | halt_sys(m);\r | |
4363 | break;\r | |
4364 | case 2:\r | |
4365 | destoffset=decode_rm00_address(m,rl);\r | |
4366 | destval = fetch_data_byte(m,destoffset);\r | |
4367 | destval = not_byte(m, destval);\r | |
4368 | store_data_byte(m,destoffset,destval);\r | |
4369 | break;\r | |
4370 | case 3:\r | |
4371 | destoffset=decode_rm00_address(m,rl);\r | |
4372 | destval = fetch_data_byte(m,destoffset);\r | |
4373 | destval = neg_byte(m, destval);\r | |
4374 | store_data_byte(m,destoffset,destval);\r | |
4375 | break;\r | |
4376 | case 4:\r | |
4377 | destoffset=decode_rm00_address(m,rl);\r | |
4378 | destval = fetch_data_byte(m,destoffset);\r | |
4379 | mul_byte(m, destval);\r | |
4380 | break;\r | |
4381 | case 5:\r | |
4382 | destoffset=decode_rm00_address(m,rl);\r | |
4383 | destval = fetch_data_byte(m,destoffset);\r | |
4384 | imul_byte(m, destval);\r | |
4385 | break;\r | |
4386 | case 6:\r | |
4387 | destoffset=decode_rm00_address(m,rl);\r | |
4388 | destval = fetch_data_byte(m,destoffset);\r | |
4389 | div_byte(m, destval);\r | |
4390 | break;\r | |
4391 | case 7:\r | |
4392 | destoffset=decode_rm00_address(m,rl);\r | |
4393 | destval = fetch_data_byte(m,destoffset);\r | |
4394 | idiv_byte(m, destval);\r | |
4395 | break;\r | |
4396 | }\r | |
4397 | break; /* end mod==00 */\r | |
4398 | case 1: /* mod=01 */\r | |
4399 | switch(rh)\r | |
4400 | {\r | |
4401 | case 0: /* test byte imm */\r | |
4402 | destoffset=decode_rm01_address(m,rl);\r | |
4403 | srcval = fetch_byte_imm(m);\r | |
4404 | destval = fetch_data_byte(m,destoffset);\r | |
4405 | test_byte(m, destval, srcval);\r | |
4406 | break;\r | |
4407 | case 1:\r | |
4408 | halt_sys(m);\r | |
4409 | break;\r | |
4410 | case 2:\r | |
4411 | destoffset=decode_rm01_address(m,rl);\r | |
4412 | destval = fetch_data_byte(m,destoffset);\r | |
4413 | destval = not_byte(m, destval);\r | |
4414 | store_data_byte(m,destoffset,destval);\r | |
4415 | break;\r | |
4416 | case 3:\r | |
4417 | destoffset=decode_rm01_address(m,rl);\r | |
4418 | destval = fetch_data_byte(m,destoffset);\r | |
4419 | destval = neg_byte(m, destval);\r | |
4420 | store_data_byte(m,destoffset,destval);\r | |
4421 | break;\r | |
4422 | case 4:\r | |
4423 | destoffset=decode_rm01_address(m,rl);\r | |
4424 | destval = fetch_data_byte(m,destoffset);\r | |
4425 | mul_byte(m, destval);\r | |
4426 | break;\r | |
4427 | case 5:\r | |
4428 | destoffset=decode_rm01_address(m,rl);\r | |
4429 | destval = fetch_data_byte(m,destoffset);\r | |
4430 | imul_byte(m, destval);\r | |
4431 | break;\r | |
4432 | case 6:\r | |
4433 | destoffset=decode_rm01_address(m,rl);\r | |
4434 | destval = fetch_data_byte(m,destoffset);\r | |
4435 | div_byte(m, destval);\r | |
4436 | break;\r | |
4437 | case 7:\r | |
4438 | destoffset=decode_rm01_address(m,rl);\r | |
4439 | destval = fetch_data_byte(m,destoffset);\r | |
4440 | idiv_byte(m, destval);\r | |
4441 | break;\r | |
4442 | }\r | |
4443 | break; /* end mod==01 */\r | |
4444 | case 2: /* mod=10 */\r | |
4445 | switch(rh)\r | |
4446 | {\r | |
4447 | case 0: /* test byte imm */\r | |
4448 | destoffset=decode_rm10_address(m,rl);\r | |
4449 | srcval = fetch_byte_imm(m);\r | |
4450 | destval = fetch_data_byte(m,destoffset);\r | |
4451 | test_byte(m, destval, srcval);\r | |
4452 | break;\r | |
4453 | case 1:\r | |
4454 | halt_sys(m);\r | |
4455 | break;\r | |
4456 | case 2:\r | |
4457 | destoffset=decode_rm10_address(m,rl);\r | |
4458 | destval = fetch_data_byte(m,destoffset);\r | |
4459 | destval = not_byte(m, destval);\r | |
4460 | store_data_byte(m,destoffset,destval);\r | |
4461 | break;\r | |
4462 | case 3:\r | |
4463 | destoffset=decode_rm10_address(m,rl);\r | |
4464 | destval = fetch_data_byte(m,destoffset);\r | |
4465 | destval = neg_byte(m, destval);\r | |
4466 | store_data_byte(m,destoffset,destval);\r | |
4467 | break;\r | |
4468 | case 4:\r | |
4469 | destoffset=decode_rm10_address(m,rl);\r | |
4470 | destval = fetch_data_byte(m,destoffset);\r | |
4471 | mul_byte(m, destval);\r | |
4472 | break;\r | |
4473 | case 5:\r | |
4474 | destoffset=decode_rm10_address(m,rl);\r | |
4475 | destval = fetch_data_byte(m,destoffset);\r | |
4476 | imul_byte(m, destval);\r | |
4477 | break;\r | |
4478 | case 6:\r | |
4479 | destoffset=decode_rm10_address(m,rl);\r | |
4480 | destval = fetch_data_byte(m,destoffset);\r | |
4481 | div_byte(m, destval);\r | |
4482 | break;\r | |
4483 | case 7:\r | |
4484 | destoffset=decode_rm10_address(m,rl);\r | |
4485 | destval = fetch_data_byte(m,destoffset);\r | |
4486 | idiv_byte(m, destval);\r | |
4487 | break;\r | |
4488 | }\r | |
4489 | break; /* end mod==10 */\r | |
4490 | case 3: /* mod=11 */\r | |
4491 | switch(rh)\r | |
4492 | {\r | |
4493 | case 0: /* test byte imm */\r | |
4494 | destreg=DECODE_RM_BYTE_REGISTER(m,rl);\r | |
4495 | srcval = fetch_byte_imm(m);\r | |
4496 | test_byte(m, *destreg, srcval);\r | |
4497 | break;\r | |
4498 | case 1:\r | |
4499 | halt_sys(m);\r | |
4500 | break;\r | |
4501 | case 2:\r | |
4502 | destreg=DECODE_RM_BYTE_REGISTER(m,rl);\r | |
4503 | *destreg = not_byte(m, *destreg);\r | |
4504 | break;\r | |
4505 | case 3:\r | |
4506 | destreg=DECODE_RM_BYTE_REGISTER(m,rl);\r | |
4507 | *destreg = neg_byte(m, *destreg);\r | |
4508 | break;\r | |
4509 | case 4:\r | |
4510 | destreg=DECODE_RM_BYTE_REGISTER(m,rl);\r | |
4511 | mul_byte(m, *destreg); /*!!! */\r | |
4512 | break;\r | |
4513 | case 5:\r | |
4514 | destreg=DECODE_RM_BYTE_REGISTER(m,rl);\r | |
4515 | imul_byte(m, *destreg);\r | |
4516 | break;\r | |
4517 | case 6:\r | |
4518 | destreg=DECODE_RM_BYTE_REGISTER(m,rl);\r | |
4519 | div_byte(m, *destreg);\r | |
4520 | break;\r | |
4521 | case 7:\r | |
4522 | destreg=DECODE_RM_BYTE_REGISTER(m,rl);\r | |
4523 | idiv_byte(m, *destreg);\r | |
4524 | break;\r | |
4525 | }\r | |
4526 | break; /* end mod==11 */\r | |
4527 | }\r | |
4528 | DECODE_CLEAR_SEGOVR(m);\r | |
4529 | }\r | |
4530 | \r | |
4531 | /*opcode=0xf7*/\r | |
4532 | static void i86op_opcF7_word_RM(PC_ENV *m)\r | |
4533 | {\r | |
4534 | uint16 mod,rl,rh;\r | |
4535 | uint16 *destreg;\r | |
4536 | uint16 destoffset;\r | |
4537 | uint16 destval,srcval;\r | |
4538 | /* long, drawn out code follows. Double switch for a total\r | |
4539 | of 32 cases. */\r | |
4540 | FETCH_DECODE_MODRM(m,mod,rh,rl);\r | |
4541 | switch (mod)\r | |
4542 | {\r | |
4543 | case 0: /* mod=00 */\r | |
4544 | switch(rh)\r | |
4545 | {\r | |
4546 | case 0: /* test word imm */\r | |
4547 | destoffset=decode_rm00_address(m,rl);\r | |
4548 | srcval = fetch_word_imm(m);\r | |
4549 | destval = fetch_data_word(m,destoffset);\r | |
4550 | test_word(m, destval, srcval);\r | |
4551 | break;\r | |
4552 | case 1:\r | |
4553 | halt_sys(m);\r | |
4554 | break;\r | |
4555 | case 2:\r | |
4556 | destoffset=decode_rm00_address(m,rl);\r | |
4557 | destval = fetch_data_word(m,destoffset);\r | |
4558 | destval = not_word(m, destval);\r | |
4559 | store_data_word(m,destoffset,destval);\r | |
4560 | break;\r | |
4561 | case 3:\r | |
4562 | destoffset=decode_rm00_address(m,rl);\r | |
4563 | destval = fetch_data_word(m,destoffset);\r | |
4564 | destval = neg_word(m, destval);\r | |
4565 | store_data_word(m,destoffset,destval);\r | |
4566 | break;\r | |
4567 | case 4:\r | |
4568 | destoffset=decode_rm00_address(m,rl);\r | |
4569 | destval = fetch_data_word(m,destoffset);\r | |
4570 | mul_word(m, destval);\r | |
4571 | break;\r | |
4572 | case 5:\r | |
4573 | destoffset=decode_rm00_address(m,rl);\r | |
4574 | destval = fetch_data_word(m,destoffset);\r | |
4575 | imul_word(m, destval);\r | |
4576 | break;\r | |
4577 | case 6:\r | |
4578 | destoffset=decode_rm00_address(m,rl);\r | |
4579 | destval = fetch_data_word(m,destoffset);\r | |
4580 | div_word(m, destval);\r | |
4581 | break;\r | |
4582 | case 7:\r | |
4583 | destoffset=decode_rm00_address(m,rl);\r | |
4584 | destval = fetch_data_word(m,destoffset);\r | |
4585 | idiv_word(m, destval);\r | |
4586 | break;\r | |
4587 | }\r | |
4588 | break; /* end mod==00 */\r | |
4589 | case 1: /* mod=01 */\r | |
4590 | switch(rh)\r | |
4591 | {\r | |
4592 | case 0: /* test word imm */\r | |
4593 | destoffset=decode_rm01_address(m,rl);\r | |
4594 | srcval = fetch_word_imm(m);\r | |
4595 | destval = fetch_data_word(m,destoffset);\r | |
4596 | test_word(m, destval, srcval);\r | |
4597 | break;\r | |
4598 | case 1:\r | |
4599 | halt_sys(m);\r | |
4600 | break;\r | |
4601 | case 2:\r | |
4602 | destoffset=decode_rm01_address(m,rl);\r | |
4603 | destval = fetch_data_word(m,destoffset);\r | |
4604 | destval = not_word(m, destval);\r | |
4605 | store_data_word(m,destoffset,destval);\r | |
4606 | break;\r | |
4607 | case 3:\r | |
4608 | destoffset=decode_rm01_address(m,rl);\r | |
4609 | destval = fetch_data_word(m,destoffset);\r | |
4610 | destval = neg_word(m, destval);\r | |
4611 | store_data_word(m,destoffset,destval);\r | |
4612 | break;\r | |
4613 | case 4:\r | |
4614 | destoffset=decode_rm01_address(m,rl);\r | |
4615 | destval = fetch_data_word(m,destoffset);\r | |
4616 | mul_word(m, destval);\r | |
4617 | break;\r | |
4618 | case 5:\r | |
4619 | destoffset=decode_rm01_address(m,rl);\r | |
4620 | destval = fetch_data_word(m,destoffset);\r | |
4621 | imul_word(m, destval);\r | |
4622 | break;\r | |
4623 | case 6:\r | |
4624 | destoffset=decode_rm01_address(m,rl);\r | |
4625 | destval = fetch_data_word(m,destoffset);\r | |
4626 | div_word(m, destval);\r | |
4627 | break;\r | |
4628 | case 7:\r | |
4629 | destoffset=decode_rm01_address(m,rl);\r | |
4630 | destval = fetch_data_word(m,destoffset);\r | |
4631 | idiv_word(m, destval);\r | |
4632 | break;\r | |
4633 | }\r | |
4634 | break; /* end mod==01 */\r | |
4635 | case 2: /* mod=10 */\r | |
4636 | switch(rh)\r | |
4637 | {\r | |
4638 | case 0: /* test word imm */\r | |
4639 | destoffset=decode_rm10_address(m,rl);\r | |
4640 | srcval = fetch_word_imm(m);\r | |
4641 | destval = fetch_data_word(m,destoffset);\r | |
4642 | test_word(m, destval, srcval);\r | |
4643 | break;\r | |
4644 | case 1:\r | |
4645 | halt_sys(m);\r | |
4646 | break;\r | |
4647 | case 2:\r | |
4648 | destoffset=decode_rm10_address(m,rl);\r | |
4649 | destval = fetch_data_word(m,destoffset);\r | |
4650 | destval = not_word(m, destval);\r | |
4651 | store_data_word(m,destoffset,destval);\r | |
4652 | break;\r | |
4653 | case 3:\r | |
4654 | destoffset=decode_rm10_address(m,rl);\r | |
4655 | destval = fetch_data_word(m,destoffset);\r | |
4656 | destval = neg_word(m, destval);\r | |
4657 | store_data_word(m,destoffset,destval);\r | |
4658 | break;\r | |
4659 | case 4:\r | |
4660 | destoffset=decode_rm10_address(m,rl);\r | |
4661 | destval = fetch_data_word(m,destoffset);\r | |
4662 | mul_word(m, destval);\r | |
4663 | break;\r | |
4664 | case 5:\r | |
4665 | destoffset=decode_rm10_address(m,rl);\r | |
4666 | destval = fetch_data_word(m,destoffset);\r | |
4667 | imul_word(m, destval);\r | |
4668 | break;\r | |
4669 | case 6:\r | |
4670 | destoffset=decode_rm10_address(m,rl);\r | |
4671 | destval = fetch_data_word(m,destoffset);\r | |
4672 | div_word(m, destval);\r | |
4673 | break;\r | |
4674 | case 7:\r | |
4675 | destoffset=decode_rm10_address(m,rl);\r | |
4676 | destval = fetch_data_word(m,destoffset);\r | |
4677 | idiv_word(m, destval);\r | |
4678 | break;\r | |
4679 | }\r | |
4680 | break; /* end mod==10 */\r | |
4681 | case 3: /* mod=11 */\r | |
4682 | switch(rh)\r | |
4683 | {\r | |
4684 | case 0: /* test word imm */\r | |
4685 | destreg=DECODE_RM_WORD_REGISTER(m,rl);\r | |
4686 | srcval = fetch_word_imm(m);\r | |
4687 | test_word(m, *destreg, srcval);\r | |
4688 | break;\r | |
4689 | case 1:\r | |
4690 | halt_sys(m);\r | |
4691 | break;\r | |
4692 | case 2:\r | |
4693 | destreg=DECODE_RM_WORD_REGISTER(m,rl);\r | |
4694 | *destreg = not_word(m, *destreg);\r | |
4695 | break;\r | |
4696 | case 3:\r | |
4697 | destreg=DECODE_RM_WORD_REGISTER(m,rl);\r | |
4698 | *destreg = neg_word(m, *destreg);\r | |
4699 | break;\r | |
4700 | case 4:\r | |
4701 | destreg=DECODE_RM_WORD_REGISTER(m,rl);\r | |
4702 | mul_word(m, *destreg); /*!!! */\r | |
4703 | break;\r | |
4704 | case 5:\r | |
4705 | destreg=DECODE_RM_WORD_REGISTER(m,rl);\r | |
4706 | imul_word(m, *destreg);\r | |
4707 | break;\r | |
4708 | case 6:\r | |
4709 | destreg=DECODE_RM_WORD_REGISTER(m,rl);\r | |
4710 | div_word(m, *destreg);\r | |
4711 | break;\r | |
4712 | case 7:\r | |
4713 | destreg=DECODE_RM_WORD_REGISTER(m,rl);\r | |
4714 | idiv_word(m, *destreg);\r | |
4715 | break;\r | |
4716 | }\r | |
4717 | break; /* end mod==11 */\r | |
4718 | }\r | |
4719 | DECODE_CLEAR_SEGOVR(m);\r | |
4720 | }\r | |
4721 | \r | |
4722 | /*opcode=0xf8*/\r | |
4723 | static void i86op_clc(PC_ENV *m)\r | |
4724 | {\r | |
4725 | /* clear the carry flag. */\r | |
4726 | CLEAR_FLAG(m, F_CF);\r | |
4727 | DECODE_CLEAR_SEGOVR(m);\r | |
4728 | }\r | |
4729 | \r | |
4730 | /*opcode=0xf9*/\r | |
4731 | static void i86op_stc(PC_ENV *m)\r | |
4732 | {\r | |
4733 | /* set the carry flag. */\r | |
4734 | SET_FLAG(m, F_CF);\r | |
4735 | DECODE_CLEAR_SEGOVR(m);\r | |
4736 | }\r | |
4737 | \r | |
4738 | /*opcode=0xfa*/\r | |
4739 | static void i86op_cli(PC_ENV *m)\r | |
4740 | {\r | |
4741 | /* clear interrupts. */\r | |
4742 | CLEAR_FLAG(m, F_IF);\r | |
4743 | DECODE_CLEAR_SEGOVR(m);\r | |
4744 | }\r | |
4745 | \r | |
4746 | /*opcode=0xfb*/\r | |
4747 | static void i86op_sti(PC_ENV *m)\r | |
4748 | {\r | |
4749 | /* enable interrupts. */\r | |
4750 | SET_FLAG(m, F_IF);\r | |
4751 | DECODE_CLEAR_SEGOVR(m);\r | |
4752 | }\r | |
4753 | \r | |
4754 | /*opcode=0xfc*/\r | |
4755 | static void i86op_cld(PC_ENV *m)\r | |
4756 | {\r | |
4757 | /* clear interrupts. */\r | |
4758 | CLEAR_FLAG(m, F_DF);\r | |
4759 | DECODE_CLEAR_SEGOVR(m);\r | |
4760 | }\r | |
4761 | \r | |
4762 | /*opcode=0xfd*/\r | |
4763 | static void i86op_std(PC_ENV *m)\r | |
4764 | {\r | |
4765 | /* clear interrupts. */\r | |
4766 | SET_FLAG(m, F_DF);\r | |
4767 | DECODE_CLEAR_SEGOVR(m);\r | |
4768 | }\r | |
4769 | \r | |
4770 | /*opcode=0xfe*/\r | |
4771 | static void i86op_opcFE_byte_RM(PC_ENV *m)\r | |
4772 | {\r | |
4773 | /* Yet another damned special case instruction. */\r | |
4774 | uint16 mod,rh,rl;\r | |
4775 | uint8 destval;\r | |
4776 | uint16 destoffset;\r | |
4777 | uint8 *destreg;\r | |
4778 | /* ARRGH, ANOTHER GODDAMN SPECIAL CASE INSTRUCTION!!! */\r | |
4779 | FETCH_DECODE_MODRM(m,mod,rh,rl);\r | |
4780 | switch (mod)\r | |
4781 | {\r | |
4782 | case 0:\r | |
4783 | destoffset=decode_rm00_address(m,rl);\r | |
4784 | switch (rh)\r | |
4785 | {\r | |
4786 | case 0: /* inc word ptr ... */\r | |
4787 | destval = fetch_data_byte(m,destoffset);\r | |
4788 | destval = inc_byte(m,destval);\r | |
4789 | store_data_byte(m,destoffset,destval);\r | |
4790 | break;\r | |
4791 | case 1: /* dec word ptr ... */\r | |
4792 | destval = fetch_data_byte(m,destoffset);\r | |
4793 | destval = dec_byte(m,destval);\r | |
4794 | store_data_byte(m,destoffset,destval);\r | |
4795 | break;\r | |
4796 | }\r | |
4797 | break;\r | |
4798 | case 1:\r | |
4799 | destoffset=decode_rm01_address(m,rl);\r | |
4800 | switch (rh)\r | |
4801 | {\r | |
4802 | case 0:\r | |
4803 | destval = fetch_data_byte(m,destoffset);\r | |
4804 | destval = inc_byte(m,destval);\r | |
4805 | store_data_byte(m,destoffset,destval);\r | |
4806 | break;\r | |
4807 | case 1:\r | |
4808 | destval = fetch_data_byte(m,destoffset);\r | |
4809 | destval = dec_byte(m,destval);\r | |
4810 | store_data_byte(m,destoffset,destval);\r | |
4811 | break;\r | |
4812 | }\r | |
4813 | break;\r | |
4814 | case 2:\r | |
4815 | destoffset=decode_rm10_address(m,rl);\r | |
4816 | switch (rh)\r | |
4817 | {\r | |
4818 | case 0:\r | |
4819 | destval = fetch_data_byte(m,destoffset);\r | |
4820 | destval = inc_byte(m,destval);\r | |
4821 | store_data_byte(m,destoffset,destval);\r | |
4822 | break;\r | |
4823 | case 1:\r | |
4824 | destval = fetch_data_byte(m,destoffset);\r | |
4825 | destval = dec_byte(m,destval);\r | |
4826 | store_data_byte(m,destoffset,destval);\r | |
4827 | break;\r | |
4828 | }\r | |
4829 | break;\r | |
4830 | case 3:\r | |
4831 | destreg = DECODE_RM_BYTE_REGISTER(m,rl);\r | |
4832 | switch (rh)\r | |
4833 | {\r | |
4834 | case 0:\r | |
4835 | *destreg = inc_byte(m,*destreg);\r | |
4836 | break;\r | |
4837 | case 1:\r | |
4838 | *destreg = dec_byte(m,*destreg);\r | |
4839 | break;\r | |
4840 | }\r | |
4841 | break;\r | |
4842 | }\r | |
4843 | DECODE_CLEAR_SEGOVR(m);\r | |
4844 | }\r | |
4845 | \r | |
4846 | /*opcode=0xff*/\r | |
4847 | static void i86op_opcFF_word_RM(PC_ENV *m)\r | |
4848 | {\r | |
4849 | uint16 mod,rh,rl;\r | |
4850 | uint16 destval,destval2;\r | |
4851 | uint16 destoffset;\r | |
4852 | uint16 *destreg;\r | |
4853 | /* ANOTHER DAMN SPECIAL CASE INSTRUCTION!!! */\r | |
4854 | FETCH_DECODE_MODRM(m,mod,rh,rl);\r | |
4855 | switch (mod)\r | |
4856 | {\r | |
4857 | case 0:\r | |
4858 | destoffset=decode_rm00_address(m,rl);\r | |
4859 | switch (rh)\r | |
4860 | {\r | |
4861 | case 0: /* inc word ptr ... */\r | |
4862 | destval = fetch_data_word(m,destoffset);\r | |
4863 | destval = inc_word(m,destval);\r | |
4864 | store_data_word(m,destoffset,destval);\r | |
4865 | break;\r | |
4866 | case 1: /* dec word ptr ... */\r | |
4867 | destval = fetch_data_word(m,destoffset);\r | |
4868 | destval = dec_word(m,destval);\r | |
4869 | store_data_word(m,destoffset,destval);\r | |
4870 | break;\r | |
4871 | case 2: /* call word ptr ... */\r | |
4872 | destval = fetch_data_word(m,destoffset);\r | |
4873 | push_word(m,m->R_IP);\r | |
4874 | m->R_IP = destval;\r | |
4875 | break;\r | |
4876 | case 3: /* call far ptr ... */\r | |
4877 | destval = fetch_data_word(m,destoffset);\r | |
4878 | destval2 = fetch_data_word(m,destoffset+2);\r | |
4879 | push_word(m,m->R_CS);\r | |
4880 | m->R_CS = destval2;\r | |
4881 | push_word(m,m->R_IP);\r | |
4882 | m->R_IP = destval;\r | |
4883 | break;\r | |
4884 | case 4: /* jmp word ptr ... */\r | |
4885 | destval = fetch_data_word(m,destoffset);\r | |
4886 | m->R_IP = destval;\r | |
4887 | break;\r | |
4888 | case 5: /* jmp far ptr ... */\r | |
4889 | destval = fetch_data_word(m,destoffset);\r | |
4890 | destval2 = fetch_data_word(m,destoffset+2);\r | |
4891 | m->R_IP = destval;\r | |
4892 | m->R_CS = destval2;\r | |
4893 | break;\r | |
4894 | case 6: /* push word ptr ... */\r | |
4895 | destval = fetch_data_word(m,destoffset);\r | |
4896 | push_word(m,destval);\r | |
4897 | break;\r | |
4898 | }\r | |
4899 | break;\r | |
4900 | case 1:\r | |
4901 | destoffset=decode_rm01_address(m,rl);\r | |
4902 | switch (rh)\r | |
4903 | {\r | |
4904 | case 0:\r | |
4905 | destval = fetch_data_word(m,destoffset);\r | |
4906 | destval = inc_word(m,destval);\r | |
4907 | store_data_word(m,destoffset,destval);\r | |
4908 | break;\r | |
4909 | case 1:\r | |
4910 | destval = fetch_data_word(m,destoffset);\r | |
4911 | destval = dec_word(m,destval);\r | |
4912 | store_data_word(m,destoffset,destval);\r | |
4913 | break;\r | |
4914 | case 2: /* call word ptr ... */\r | |
4915 | destval = fetch_data_word(m,destoffset);\r | |
4916 | push_word(m,m->R_IP);\r | |
4917 | m->R_IP = destval;\r | |
4918 | break;\r | |
4919 | case 3: /* call far ptr ... */\r | |
4920 | destval = fetch_data_word(m,destoffset);\r | |
4921 | destval2 = fetch_data_word(m,destoffset+2);\r | |
4922 | push_word(m,m->R_CS);\r | |
4923 | m->R_CS = destval2;\r | |
4924 | push_word(m,m->R_IP);\r | |
4925 | m->R_IP = destval;\r | |
4926 | break;\r | |
4927 | case 4: /* jmp word ptr ... */\r | |
4928 | destval = fetch_data_word(m,destoffset);\r | |
4929 | m->R_IP = destval;\r | |
4930 | break;\r | |
4931 | case 5: /* jmp far ptr ... */\r | |
4932 | destval = fetch_data_word(m,destoffset);\r | |
4933 | destval2 = fetch_data_word(m,destoffset+2);\r | |
4934 | m->R_IP = destval;\r | |
4935 | m->R_CS = destval2;\r | |
4936 | break;\r | |
4937 | case 6: /* push word ptr ... */\r | |
4938 | destval = fetch_data_word(m,destoffset);\r | |
4939 | push_word(m,destval);\r | |
4940 | break;\r | |
4941 | }\r | |
4942 | break;\r | |
4943 | case 2:\r | |
4944 | destoffset=decode_rm10_address(m,rl);\r | |
4945 | switch (rh)\r | |
4946 | {\r | |
4947 | case 0:\r | |
4948 | destval = fetch_data_word(m,destoffset);\r | |
4949 | destval = inc_word(m,destval);\r | |
4950 | store_data_word(m,destoffset,destval);\r | |
4951 | break;\r | |
4952 | case 1:\r | |
4953 | destval = fetch_data_word(m,destoffset);\r | |
4954 | destval = dec_word(m,destval);\r | |
4955 | store_data_word(m,destoffset,destval);\r | |
4956 | break;\r | |
4957 | case 2: /* call word ptr ... */\r | |
4958 | destval = fetch_data_word(m,destoffset);\r | |
4959 | push_word(m,m->R_IP);\r | |
4960 | m->R_IP = destval;\r | |
4961 | break;\r | |
4962 | case 3: /* call far ptr ... */\r | |
4963 | destval = fetch_data_word(m,destoffset);\r | |
4964 | destval2 = fetch_data_word(m,destoffset+2);\r | |
4965 | push_word(m,m->R_CS);\r | |
4966 | m->R_CS = destval2;\r | |
4967 | push_word(m,m->R_IP);\r | |
4968 | m->R_IP = destval;\r | |
4969 | break;\r | |
4970 | case 4: /* jmp word ptr ... */\r | |
4971 | destval = fetch_data_word(m,destoffset);\r | |
4972 | m->R_IP = destval;\r | |
4973 | break;\r | |
4974 | case 5: /* jmp far ptr ... */\r | |
4975 | destval = fetch_data_word(m,destoffset);\r | |
4976 | destval2 = fetch_data_word(m,destoffset+2);\r | |
4977 | m->R_IP = destval;\r | |
4978 | m->R_CS = destval2;\r | |
4979 | break;\r | |
4980 | case 6: /* push word ptr ... */\r | |
4981 | destval = fetch_data_word(m,destoffset);\r | |
4982 | push_word(m,destval);\r | |
4983 | break;\r | |
4984 | }\r | |
4985 | break;\r | |
4986 | case 3:\r | |
4987 | destreg = DECODE_RM_WORD_REGISTER(m,rl);\r | |
4988 | switch (rh)\r | |
4989 | {\r | |
4990 | case 0:\r | |
4991 | *destreg = inc_word(m,*destreg);\r | |
4992 | break;\r | |
4993 | case 1:\r | |
4994 | *destreg = dec_word(m,*destreg);\r | |
4995 | break;\r | |
4996 | case 2: /* call word ptr ... */\r | |
4997 | push_word(m,m->R_IP);\r | |
4998 | m->R_IP = *destreg;\r | |
4999 | break;\r | |
5000 | case 3: /* jmp far ptr ... */\r | |
5001 | halt_sys(m);\r | |
5002 | break;\r | |
5003 | case 4: /* jmp ... */\r | |
5004 | m->R_IP = (uint16)(*destreg);\r | |
5005 | break;\r | |
5006 | case 5: /* jmp far ptr ... */\r | |
5007 | halt_sys(m);\r | |
5008 | break;\r | |
5009 | case 6:\r | |
5010 | push_word(m,*destreg);\r | |
5011 | break;\r | |
5012 | }\r | |
5013 | break;\r | |
5014 | }\r | |
5015 | DECODE_CLEAR_SEGOVR(m);\r | |
5016 | }\r | |
5017 | \r | |
5018 | /* opcode=0xd8*/\r | |
5019 | static void i86op_esc_coprocess_d8(PC_ENV *m)\r | |
5020 | {\r | |
5021 | DECODE_CLEAR_SEGOVR(m);\r | |
5022 | }\r | |
5023 | \r | |
5024 | /* opcode=0xd9*/\r | |
5025 | static void i86op_esc_coprocess_d9(PC_ENV *m)\r | |
5026 | {\r | |
5027 | uint16 mod,rl,rh;\r | |
5028 | uint16 destoffset;\r | |
5029 | uint8 stkelem;\r | |
5030 | FETCH_DECODE_MODRM(m,mod,rh,rl);\r | |
5031 | switch (mod)\r | |
5032 | {\r | |
5033 | case 0:\r | |
5034 | destoffset=decode_rm00_address(m,rl);\r | |
5035 | break;\r | |
5036 | case 1:\r | |
5037 | destoffset=decode_rm01_address(m,rl);\r | |
5038 | break;\r | |
5039 | case 2:\r | |
5040 | destoffset=decode_rm10_address(m,rl);\r | |
5041 | break;\r | |
5042 | case 3: /* register to register */\r | |
5043 | stkelem = (uint8) rl;\r | |
5044 | break;\r | |
5045 | }\r | |
5046 | DECODE_CLEAR_SEGOVR(m);\r | |
5047 | }\r | |
5048 | \r | |
5049 | /* opcode=0xda*/\r | |
5050 | static void i86op_esc_coprocess_da(PC_ENV *m)\r | |
5051 | {\r | |
5052 | uint16 mod,rl,rh;\r | |
5053 | uint16 destoffset;\r | |
5054 | uint8 stkelem;\r | |
5055 | FETCH_DECODE_MODRM(m,mod,rh,rl);\r | |
5056 | switch (mod)\r | |
5057 | {\r | |
5058 | case 0:\r | |
5059 | destoffset=decode_rm00_address(m,rl);\r | |
5060 | break;\r | |
5061 | case 1:\r | |
5062 | destoffset=decode_rm01_address(m,rl);\r | |
5063 | break;\r | |
5064 | case 2:\r | |
5065 | destoffset=decode_rm10_address(m,rl);\r | |
5066 | break;\r | |
5067 | case 3: /* register to register */\r | |
5068 | stkelem = (uint8) rl;\r | |
5069 | break;\r | |
5070 | }\r | |
5071 | DECODE_CLEAR_SEGOVR(m);\r | |
5072 | }\r | |
5073 | \r | |
5074 | /* opcode=0xdb*/\r | |
5075 | static void i86op_esc_coprocess_db(PC_ENV *m)\r | |
5076 | {\r | |
5077 | uint16 mod,rl,rh;\r | |
5078 | uint16 destoffset;\r | |
5079 | /* uint8 stkelem;*/\r | |
5080 | FETCH_DECODE_MODRM(m,mod,rh,rl);\r | |
5081 | switch (mod)\r | |
5082 | {\r | |
5083 | case 0:\r | |
5084 | destoffset=decode_rm00_address(m,rl);\r | |
5085 | break;\r | |
5086 | case 1:\r | |
5087 | destoffset=decode_rm01_address(m,rl);\r | |
5088 | break;\r | |
5089 | case 2:\r | |
5090 | destoffset=decode_rm10_address(m,rl);\r | |
5091 | break;\r | |
5092 | case 3: /* register to register */\r | |
5093 | break;\r | |
5094 | }\r | |
5095 | DECODE_CLEAR_SEGOVR(m);\r | |
5096 | }\r | |
5097 | \r | |
5098 | /* opcode=0xdc*/\r | |
5099 | static void i86op_esc_coprocess_dc(PC_ENV *m)\r | |
5100 | {\r | |
5101 | uint16 mod,rl,rh;\r | |
5102 | uint16 destoffset;\r | |
5103 | uint8 stkelem;\r | |
5104 | FETCH_DECODE_MODRM(m,mod,rh,rl);\r | |
5105 | switch (mod)\r | |
5106 | {\r | |
5107 | case 0:\r | |
5108 | destoffset=decode_rm00_address(m,rl);\r | |
5109 | break;\r | |
5110 | case 1:\r | |
5111 | destoffset=decode_rm01_address(m,rl);\r | |
5112 | break;\r | |
5113 | case 2:\r | |
5114 | destoffset=decode_rm10_address(m,rl);\r | |
5115 | break;\r | |
5116 | case 3: /* register to register */\r | |
5117 | stkelem = (uint8) rl;\r | |
5118 | break;\r | |
5119 | }\r | |
5120 | DECODE_CLEAR_SEGOVR(m);\r | |
5121 | }\r | |
5122 | \r | |
5123 | /* opcode=0xdd*/\r | |
5124 | static void i86op_esc_coprocess_dd(PC_ENV *m)\r | |
5125 | {\r | |
5126 | uint16 mod,rl,rh;\r | |
5127 | uint16 destoffset;\r | |
5128 | uint8 stkelem;\r | |
5129 | FETCH_DECODE_MODRM(m,mod,rh,rl);\r | |
5130 | switch (mod)\r | |
5131 | {\r | |
5132 | case 0:\r | |
5133 | destoffset=decode_rm00_address(m,rl);\r | |
5134 | break;\r | |
5135 | case 1:\r | |
5136 | destoffset=decode_rm01_address(m,rl);\r | |
5137 | break;\r | |
5138 | case 2:\r | |
5139 | destoffset=decode_rm10_address(m,rl);\r | |
5140 | break;\r | |
5141 | case 3: /* register to register */\r | |
5142 | stkelem = (uint8) rl;\r | |
5143 | break;\r | |
5144 | }\r | |
5145 | DECODE_CLEAR_SEGOVR(m);\r | |
5146 | }\r | |
5147 | \r | |
5148 | /* opcode=0xde*/\r | |
5149 | static void i86op_esc_coprocess_de(PC_ENV *m)\r | |
5150 | {\r | |
5151 | uint16 mod,rl,rh;\r | |
5152 | uint16 destoffset;\r | |
5153 | uint8 stkelem;\r | |
5154 | FETCH_DECODE_MODRM(m,mod,rh,rl);\r | |
5155 | switch (mod)\r | |
5156 | {\r | |
5157 | case 0:\r | |
5158 | destoffset=decode_rm00_address(m,rl);\r | |
5159 | break;\r | |
5160 | case 1:\r | |
5161 | destoffset=decode_rm01_address(m,rl);\r | |
5162 | break;\r | |
5163 | case 2:\r | |
5164 | destoffset=decode_rm10_address(m,rl);\r | |
5165 | break;\r | |
5166 | case 3: /* register to register */\r | |
5167 | stkelem = (uint8) rl;\r | |
5168 | break;\r | |
5169 | }\r | |
5170 | DECODE_CLEAR_SEGOVR(m);\r | |
5171 | }\r | |
5172 | \r | |
5173 | /* opcode=0xdf*/\r | |
5174 | static void i86op_esc_coprocess_df(PC_ENV *m)\r | |
5175 | {\r | |
5176 | uint16 mod,rl,rh;\r | |
5177 | uint16 destoffset;\r | |
5178 | uint8 stkelem;\r | |
5179 | FETCH_DECODE_MODRM(m,mod,rh,rl);\r | |
5180 | switch (mod)\r | |
5181 | {\r | |
5182 | case 0:\r | |
5183 | destoffset=decode_rm00_address(m,rl);\r | |
5184 | break;\r | |
5185 | case 1:\r | |
5186 | destoffset=decode_rm01_address(m,rl);\r | |
5187 | break;\r | |
5188 | case 2:\r | |
5189 | destoffset=decode_rm10_address(m,rl);\r | |
5190 | break;\r | |
5191 | case 3: /* register to register */\r | |
5192 | stkelem = (uint8) rl;\r | |
5193 | break;\r | |
5194 | }\r | |
5195 | DECODE_CLEAR_SEGOVR(m);\r | |
5196 | }\r | |
5197 | \r | |
5198 | /* OPERAND TABLE */\r | |
5199 | \r | |
5200 | OP i86_optab[256] = {\r | |
5201 | \r | |
5202 | /* 0x00 */ i86op_add_byte_RM_R,\r | |
5203 | /* 0x01 */ i86op_add_word_RM_R,\r | |
5204 | /* 0x02 */ i86op_add_byte_R_RM,\r | |
5205 | /* 0x03 */ i86op_add_word_R_RM,\r | |
5206 | /* 0x04 */ i86op_add_byte_AL_IMM,\r | |
5207 | /* 0x05 */ i86op_add_word_AX_IMM,\r | |
5208 | /* 0x06 */ i86op_push_ES,\r | |
5209 | /* 0x07 */ i86op_pop_ES,\r | |
5210 | \r | |
5211 | /* 0x08 */ i86op_or_byte_RM_R,\r | |
5212 | /* 0x09 */ i86op_or_word_RM_R,\r | |
5213 | /* 0x0a */ i86op_or_byte_R_RM,\r | |
5214 | /* 0x0b */ i86op_or_word_R_RM,\r | |
5215 | /* 0x0c */ i86op_or_byte_AL_IMM,\r | |
5216 | /* 0x0d */ i86op_or_word_AX_IMM,\r | |
5217 | /* 0x0e */ i86op_push_CS,\r | |
5218 | /* 0x0f */ i86op_illegal_op,\r | |
5219 | \r | |
5220 | /* 0x10 */ i86op_adc_byte_RM_R,\r | |
5221 | /* 0x11 */ i86op_adc_word_RM_R,\r | |
5222 | /* 0x12 */ i86op_adc_byte_R_RM,\r | |
5223 | /* 0x13 */ i86op_adc_word_R_RM,\r | |
5224 | /* 0x14 */ i86op_adc_byte_AL_IMM,\r | |
5225 | /* 0x15 */ i86op_adc_word_AX_IMM,\r | |
5226 | /* 0x16 */ i86op_push_SS,\r | |
5227 | /* 0x17 */ i86op_pop_SS,\r | |
5228 | \r | |
5229 | /* 0x18 */ i86op_sbb_byte_RM_R,\r | |
5230 | /* 0x19 */ i86op_sbb_word_RM_R,\r | |
5231 | /* 0x1a */ i86op_sbb_byte_R_RM,\r | |
5232 | /* 0x1b */ i86op_sbb_word_R_RM,\r | |
5233 | /* 0x1c */ i86op_sbb_byte_AL_IMM,\r | |
5234 | /* 0x1d */ i86op_sbb_word_AX_IMM,\r | |
5235 | /* 0x1e */ i86op_push_DS,\r | |
5236 | /* 0x1f */ i86op_pop_DS,\r | |
5237 | \r | |
5238 | /* 0x20 */ i86op_and_byte_RM_R,\r | |
5239 | /* 0x21 */ i86op_and_word_RM_R,\r | |
5240 | /* 0x22 */ i86op_and_byte_R_RM,\r | |
5241 | /* 0x23 */ i86op_and_word_R_RM,\r | |
5242 | /* 0x24 */ i86op_and_byte_AL_IMM,\r | |
5243 | /* 0x25 */ i86op_and_word_AX_IMM,\r | |
5244 | /* 0x26 */ i86op_segovr_ES,\r | |
5245 | /* 0x27 */ i86op_daa,\r | |
5246 | \r | |
5247 | /* 0x28 */ i86op_sub_byte_RM_R,\r | |
5248 | /* 0x29 */ i86op_sub_word_RM_R,\r | |
5249 | /* 0x2a */ i86op_sub_byte_R_RM,\r | |
5250 | /* 0x2b */ i86op_sub_word_R_RM,\r | |
5251 | /* 0x2c */ i86op_sub_byte_AL_IMM,\r | |
5252 | /* 0x2d */ i86op_sub_word_AX_IMM,\r | |
5253 | /* 0x2e */ i86op_segovr_CS,\r | |
5254 | /* 0x2f */ i86op_das,\r | |
5255 | \r | |
5256 | /* 0x30 */ i86op_xor_byte_RM_R,\r | |
5257 | /* 0x31 */ i86op_xor_word_RM_R,\r | |
5258 | /* 0x32 */ i86op_xor_byte_R_RM,\r | |
5259 | /* 0x33 */ i86op_xor_word_R_RM,\r | |
5260 | /* 0x34 */ i86op_xor_byte_AL_IMM,\r | |
5261 | /* 0x35 */ i86op_xor_word_AX_IMM,\r | |
5262 | /* 0x36 */ i86op_segovr_SS,\r | |
5263 | /* 0x37 */ i86op_aaa,\r | |
5264 | \r | |
5265 | /* 0x38 */ i86op_cmp_byte_RM_R,\r | |
5266 | /* 0x39 */ i86op_cmp_word_RM_R,\r | |
5267 | /* 0x3a */ i86op_cmp_byte_R_RM,\r | |
5268 | /* 0x3b */ i86op_cmp_word_R_RM,\r | |
5269 | /* 0x3c */ i86op_cmp_byte_AL_IMM,\r | |
5270 | /* 0x3d */ i86op_cmp_word_AX_IMM,\r | |
5271 | /* 0x3e */ i86op_segovr_DS,\r | |
5272 | /* 0x3f */ i86op_aas,\r | |
5273 | \r | |
5274 | /* 0x40 */ i86op_inc_AX,\r | |
5275 | /* 0x41 */ i86op_inc_CX,\r | |
5276 | /* 0x42 */ i86op_inc_DX,\r | |
5277 | /* 0x43 */ i86op_inc_BX,\r | |
5278 | /* 0x44 */ i86op_inc_SP,\r | |
5279 | /* 0x45 */ i86op_inc_BP,\r | |
5280 | /* 0x46 */ i86op_inc_SI,\r | |
5281 | /* 0x47 */ i86op_inc_DI,\r | |
5282 | \r | |
5283 | /* 0x48 */ i86op_dec_AX,\r | |
5284 | /* 0x49 */ i86op_dec_CX,\r | |
5285 | /* 0x4a */ i86op_dec_DX,\r | |
5286 | /* 0x4b */ i86op_dec_BX,\r | |
5287 | /* 0x4c */ i86op_dec_SP,\r | |
5288 | /* 0x4d */ i86op_dec_BP,\r | |
5289 | /* 0x4e */ i86op_dec_SI,\r | |
5290 | /* 0x4f */ i86op_dec_DI,\r | |
5291 | \r | |
5292 | /* 0x50 */ i86op_push_AX,\r | |
5293 | /* 0x51 */ i86op_push_CX,\r | |
5294 | /* 0x52 */ i86op_push_DX,\r | |
5295 | /* 0x53 */ i86op_push_BX,\r | |
5296 | /* 0x54 */ i86op_push_SP,\r | |
5297 | /* 0x55 */ i86op_push_BP,\r | |
5298 | /* 0x56 */ i86op_push_SI,\r | |
5299 | /* 0x57 */ i86op_push_DI,\r | |
5300 | \r | |
5301 | /* 0x58 */ i86op_pop_AX,\r | |
5302 | /* 0x59 */ i86op_pop_CX,\r | |
5303 | /* 0x5a */ i86op_pop_DX,\r | |
5304 | /* 0x5b */ i86op_pop_BX,\r | |
5305 | /* 0x5c */ i86op_pop_SP,\r | |
5306 | /* 0x5d */ i86op_pop_BP,\r | |
5307 | /* 0x5e */ i86op_pop_SI,\r | |
5308 | /* 0x5f */ i86op_pop_DI,\r | |
5309 | \r | |
5310 | /* 0x60 */ i86op_illegal_op,\r | |
5311 | /* 0x61 */ i86op_illegal_op,\r | |
5312 | /* 0x62 */ i86op_illegal_op,\r | |
5313 | /* 0x63 */ i86op_illegal_op,\r | |
5314 | /* 0x64 */ i86op_illegal_op,\r | |
5315 | /* 0x65 */ i86op_illegal_op,\r | |
5316 | /* 0x66 */ i86op_illegal_op,\r | |
5317 | /* 0x67 */ i86op_illegal_op,\r | |
5318 | \r | |
5319 | /* 0x68 */ i86op_illegal_op,\r | |
5320 | /* 0x69 */ i86op_illegal_op,\r | |
5321 | /* 0x6a */ i86op_illegal_op,\r | |
5322 | /* 0x6b */ i86op_illegal_op,\r | |
5323 | /* 0x6c */ i86op_illegal_op,\r | |
5324 | /* 0x6d */ i86op_illegal_op,\r | |
5325 | /* 0x6e */ i86op_illegal_op,\r | |
5326 | /* 0x6f */ i86op_illegal_op,\r | |
5327 | \r | |
5328 | /* 0x70 */ i86op_jump_near_O,\r | |
5329 | /* 0x71 */ i86op_jump_near_NO,\r | |
5330 | /* 0x72 */ i86op_jump_near_B,\r | |
5331 | /* 0x73 */ i86op_jump_near_NB,\r | |
5332 | /* 0x74 */ i86op_jump_near_Z,\r | |
5333 | /* 0x75 */ i86op_jump_near_NZ,\r | |
5334 | /* 0x76 */ i86op_jump_near_BE,\r | |
5335 | /* 0x77 */ i86op_jump_near_NBE,\r | |
5336 | \r | |
5337 | /* 0x78 */ i86op_jump_near_S,\r | |
5338 | /* 0x79 */ i86op_jump_near_NS,\r | |
5339 | /* 0x7a */ i86op_jump_near_P,\r | |
5340 | /* 0x7b */ i86op_jump_near_NP,\r | |
5341 | /* 0x7c */ i86op_jump_near_L,\r | |
5342 | /* 0x7d */ i86op_jump_near_NL,\r | |
5343 | /* 0x7e */ i86op_jump_near_LE,\r | |
5344 | /* 0x7f */ i86op_jump_near_NLE,\r | |
5345 | \r | |
5346 | /* 0x80 */ i86op_opc80_byte_RM_IMM,\r | |
5347 | /* 0x81 */ i86op_opc81_word_RM_IMM,\r | |
5348 | /* 0x82 */ i86op_opc82_byte_RM_IMM,\r | |
5349 | /* 0x83 */ i86op_opc83_word_RM_IMM,\r | |
5350 | /* 0x84 */ i86op_test_byte_RM_R,\r | |
5351 | /* 0x85 */ i86op_test_word_RM_R,\r | |
5352 | /* 0x86 */ i86op_xchg_byte_RM_R,\r | |
5353 | /* 0x87 */ i86op_xchg_word_RM_R,\r | |
5354 | \r | |
5355 | /* 0x88 */ i86op_mov_byte_RM_R,\r | |
5356 | /* 0x89 */ i86op_mov_word_RM_R,\r | |
5357 | /* 0x8a */ i86op_mov_byte_R_RM,\r | |
5358 | /* 0x8b */ i86op_mov_word_R_RM,\r | |
5359 | /* 0x8c */ i86op_mov_word_RM_SR,\r | |
5360 | /* 0x8d */ i86op_lea_word_R_M,\r | |
5361 | /* 0x8e */ i86op_mov_word_SR_RM,\r | |
5362 | /* 0x8f */ i86op_pop_RM,\r | |
5363 | \r | |
5364 | /* 0x90 */ i86op_nop,\r | |
5365 | /* 0x91 */ i86op_xchg_word_AX_CX,\r | |
5366 | /* 0x92 */ i86op_xchg_word_AX_DX,\r | |
5367 | /* 0x93 */ i86op_xchg_word_AX_BX,\r | |
5368 | /* 0x94 */ i86op_xchg_word_AX_SP,\r | |
5369 | /* 0x95 */ i86op_xchg_word_AX_BP ,\r | |
5370 | /* 0x96 */ i86op_xchg_word_AX_SI ,\r | |
5371 | /* 0x97 */ i86op_xchg_word_AX_DI ,\r | |
5372 | \r | |
5373 | /* 0x98 */ i86op_cbw,\r | |
5374 | /* 0x99 */ i86op_cwd,\r | |
5375 | /* 0x9a */ i86op_call_far_IMM,\r | |
5376 | /* 0x9b */ i86op_wait,\r | |
5377 | /* 0x9c */ i86op_pushf_word,\r | |
5378 | /* 0x9d */ i86op_popf_word,\r | |
5379 | /* 0x9e */ i86op_sahf,\r | |
5380 | /* 0x9f */ i86op_lahf,\r | |
5381 | \r | |
5382 | /* 0xa0 */ i86op_mov_AL_M_IMM,\r | |
5383 | /* 0xa1 */ i86op_mov_AX_M_IMM,\r | |
5384 | /* 0xa2 */ i86op_mov_M_AL_IMM,\r | |
5385 | /* 0xa3 */ i86op_mov_M_AX_IMM,\r | |
5386 | /* 0xa4 */ i86op_movs_byte,\r | |
5387 | /* 0xa5 */ i86op_movs_word,\r | |
5388 | /* 0xa6 */ i86op_cmps_byte,\r | |
5389 | /* 0xa7 */ i86op_cmps_word,\r | |
5390 | /* 0xa8 */ i86op_test_AL_IMM,\r | |
5391 | /* 0xa9 */ i86op_test_AX_IMM,\r | |
5392 | /* 0xaa */ i86op_stos_byte,\r | |
5393 | /* 0xab */ i86op_stos_word,\r | |
5394 | /* 0xac */ i86op_lods_byte,\r | |
5395 | /* 0xad */ i86op_lods_word,\r | |
5396 | /* 0xac */ i86op_scas_byte,\r | |
5397 | /* 0xad */ i86op_scas_word,\r | |
5398 | \r | |
5399 | /* 0xb0 */ i86op_mov_byte_AL_IMM,\r | |
5400 | /* 0xb1 */ i86op_mov_byte_CL_IMM,\r | |
5401 | /* 0xb2 */ i86op_mov_byte_DL_IMM,\r | |
5402 | /* 0xb3 */ i86op_mov_byte_BL_IMM,\r | |
5403 | /* 0xb4 */ i86op_mov_byte_AH_IMM,\r | |
5404 | /* 0xb5 */ i86op_mov_byte_CH_IMM,\r | |
5405 | /* 0xb6 */ i86op_mov_byte_DH_IMM,\r | |
5406 | /* 0xb7 */ i86op_mov_byte_BH_IMM,\r | |
5407 | \r | |
5408 | /* 0xb8 */ i86op_mov_word_AX_IMM,\r | |
5409 | /* 0xb9 */ i86op_mov_word_CX_IMM,\r | |
5410 | /* 0xba */ i86op_mov_word_DX_IMM,\r | |
5411 | /* 0xbb */ i86op_mov_word_BX_IMM,\r | |
5412 | /* 0xbc */ i86op_mov_word_SP_IMM,\r | |
5413 | /* 0xbd */ i86op_mov_word_BP_IMM,\r | |
5414 | /* 0xbe */ i86op_mov_word_SI_IMM,\r | |
5415 | /* 0xbf */ i86op_mov_word_DI_IMM,\r | |
5416 | \r | |
5417 | /* 0xc0 */ i86op_illegal_op,\r | |
5418 | /* 0xc1 */ i86op_illegal_op,\r | |
5419 | /* 0xc2 */ i86op_ret_near_IMM,\r | |
5420 | /* 0xc3 */ i86op_ret_near,\r | |
5421 | /* 0xc4 */ i86op_les_R_IMM,\r | |
5422 | /* 0xc5 */ i86op_lds_R_IMM,\r | |
5423 | /* 0xc6 */ i86op_mov_byte_RM_IMM,\r | |
5424 | /* 0xc7 */ i86op_mov_word_RM_IMM,\r | |
5425 | /* 0xc8 */ i86op_illegal_op,\r | |
5426 | /* 0xc9 */ i86op_illegal_op,\r | |
5427 | /* 0xca */ i86op_ret_far_IMM,\r | |
5428 | /* 0xcb */ i86op_ret_far,\r | |
5429 | /* 0xcc */ i86op_int3,\r | |
5430 | /* 0xcd */ i86op_int_IMM,\r | |
5431 | /* 0xce */ i86op_into,\r | |
5432 | /* 0xcf */ i86op_iret,\r | |
5433 | \r | |
5434 | /* 0xd0 */ i86op_opcD0_byte_RM_1,\r | |
5435 | /* 0xd1 */ i86op_opcD1_word_RM_1,\r | |
5436 | /* 0xd2 */ i86op_opcD2_byte_RM_CL,\r | |
5437 | /* 0xd3 */ i86op_opcD3_word_RM_CL,\r | |
5438 | /* 0xd4 */ i86op_aam,\r | |
5439 | /* 0xd5 */ i86op_aad,\r | |
5440 | /* 0xd6 */ i86op_illegal_op,\r | |
5441 | /* 0xd7 */ i86op_xlat,\r | |
5442 | /* 0xd8 */ i86op_esc_coprocess_d8,\r | |
5443 | /* 0xd9 */ i86op_esc_coprocess_d9,\r | |
5444 | /* 0xda */ i86op_esc_coprocess_da,\r | |
5445 | /* 0xdb */ i86op_esc_coprocess_db,\r | |
5446 | /* 0xdc */ i86op_esc_coprocess_dc,\r | |
5447 | /* 0xdd */ i86op_esc_coprocess_dd,\r | |
5448 | /* 0xde */ i86op_esc_coprocess_de,\r | |
5449 | /* 0xdf */ i86op_esc_coprocess_df,\r | |
5450 | \r | |
5451 | /* 0xe0 */ i86op_loopne,\r | |
5452 | /* 0xe1 */ i86op_loope,\r | |
5453 | /* 0xe2 */ i86op_loop,\r | |
5454 | /* 0xe3 */ i86op_jcxz,\r | |
5455 | /* 0xe4 */ i86op_in_byte_AL_IMM,\r | |
5456 | /* 0xe5 */ i86op_in_word_AX_IMM,\r | |
5457 | /* 0xe6 */ i86op_out_byte_IMM_AL,\r | |
5458 | /* 0xe7 */ i86op_out_word_IMM_AX,\r | |
5459 | \r | |
5460 | /* 0xe8 */ i86op_call_near_IMM,\r | |
5461 | /* 0xe9 */ i86op_jump_near_IMM,\r | |
5462 | /* 0xea */ i86op_jump_far_IMM,\r | |
5463 | /* 0xeb */ i86op_jump_byte_IMM,\r | |
5464 | /* 0xec */ i86op_in_byte_AL_DX,\r | |
5465 | /* 0xed */ i86op_in_word_AX_DX,\r | |
5466 | /* 0xee */ i86op_out_byte_DX_AL,\r | |
5467 | /* 0xef */ i86op_out_word_DX_AX,\r | |
5468 | \r | |
5469 | /* 0xf0 */ i86op_lock,\r | |
5470 | /* 0xf1 */ i86op_illegal_op,\r | |
5471 | /* 0xf2 */ i86op_repne,\r | |
5472 | /* 0xf3 */ i86op_repe,\r | |
5473 | /* 0xf4 */ i86op_halt,\r | |
5474 | /* 0xf5 */ i86op_cmc,\r | |
5475 | /* 0xf6 */ i86op_opcF6_byte_RM,\r | |
5476 | /* 0xf7 */ i86op_opcF7_word_RM,\r | |
5477 | \r | |
5478 | /* 0xf8 */ i86op_clc,\r | |
5479 | /* 0xf9 */ i86op_stc,\r | |
5480 | /* 0xfa */ i86op_cli,\r | |
5481 | /* 0xfb */ i86op_sti,\r | |
5482 | /* 0xfc */ i86op_cld,\r | |
5483 | /* 0xfd */ i86op_std,\r | |
5484 | /* 0xfe */ i86op_opcFE_byte_RM,\r | |
5485 | /* 0xff */ i86op_opcFF_word_RM,\r | |
5486 | \r | |
5487 | };\r |