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On TlsFree, clear the released TLS index in all threads.
[wine/multimedia.git] / memory / instr.c
blob0d83ac47f6e7f3b0c5e7954b3445c7165d8d9191
1 /*
2 * Emulation of privileged instructions
3 *
4 * Copyright 1995 Alexandre Julliard
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 */
20
21 #include <stdarg.h>
22
23 #include "ntstatus.h"
24 #include "windef.h"
25 #include "winbase.h"
26 #include "wingdi.h"
27 #include "wine/winuser16.h"
28 #include "module.h"
29 #include "miscemu.h"
30 #include "selectors.h"
31 #include "wine/debug.h"
32 #include "callback.h"
33 #include "thread.h"
34 #include "wine/exception.h"
35
36 WINE_DEFAULT_DEBUG_CHANNEL(int);
37 WINE_DECLARE_DEBUG_CHANNEL(io);
38
39 #ifdef __i386__
40
41 /* macros to set parts of a DWORD */
42 #define SET_LOWORD(dw,val) ((dw) = ((dw) & 0xffff0000) | LOWORD(val))
43 #define SET_LOBYTE(dw,val) ((dw) = ((dw) & 0xffffff00) | LOBYTE(val))
44 #define ADD_LOWORD(dw,val) ((dw) = ((dw) & 0xffff0000) | LOWORD((DWORD)(dw)+(val)))
45
46 inline static void add_stack( CONTEXT86 *context, int offset )
47 {
48 if (ISV86(context) || !IS_SELECTOR_32BIT(context->SegSs))
49 ADD_LOWORD( context->Esp, offset );
50 else
51 context->Esp += offset;
52 }
53
54 inline static void *make_ptr( CONTEXT86 *context, DWORD seg, DWORD off, int long_addr )
55 {
56 if (ISV86(context)) return PTR_REAL_TO_LIN( seg, off );
57 if (IS_SELECTOR_SYSTEM(seg)) return (void *)off;
58 if (!long_addr) off = LOWORD(off);
59 return (char *) MapSL( MAKESEGPTR( seg, 0 ) ) + off;
60 }
61
62 inline static void *get_stack( CONTEXT86 *context )
63 {
64 if (ISV86(context)) return PTR_REAL_TO_LIN( context->SegSs, context->Esp );
65 return wine_ldt_get_ptr( context->SegSs, context->Esp );
66 }
67
68
69 /***********************************************************************
70 * timer_thread
71 */
72 static DWORD CALLBACK timer_thread( void *dummy )
73 {
74 for (;;)
75 {
76 Sleep(55);
77 DOSMEM_Tick( 0 );
78 }
79 return 0; /* unreached */
80 }
81
82 /***********************************************************************
83 * INSTR_ReplaceSelector
84 *
85 * Try to replace an invalid selector by a valid one.
86 * The only selector where it is allowed to do "mov ax,40;mov es,ax"
87 * is the so called 'bimodal' selector 0x40, which points to the BIOS
88 * data segment. Used by (at least) Borland products (and programs compiled
89 * using Borland products).
90 *
91 * See Undocumented Windows, Chapter 5, __0040.
92 */
93 static BOOL INSTR_ReplaceSelector( CONTEXT86 *context, WORD *sel )
94 {
95 if (*sel == 0x40)
96 {
97 #if 0 /* hack until this is moved to kernel */
98 static WORD sys_timer = 0;
99 if (!sys_timer)
100 sys_timer = CreateSystemTimer( 55, DOSMEM_Tick );
101 #endif
102 static HANDLE sys_thread;
103 if (!sys_thread) sys_thread = CreateThread( NULL, 0, timer_thread, NULL, 0, NULL );
104 *sel = DOSMEM_BiosDataSeg;
105 return TRUE;
106 }
107 return FALSE; /* Can't replace selector, crashdump */
108 }
109
110
111 /***********************************************************************
112 * INSTR_GetOperandAddr
113 *
114 * Return the address of an instruction operand (from the mod/rm byte).
115 */
116 static BYTE *INSTR_GetOperandAddr( CONTEXT86 *context, BYTE *instr,
117 int long_addr, int segprefix, int *len )
118 {
119 int mod, rm, base, index = 0, ss = 0, seg = 0, off;
120 LDT_ENTRY entry;
121
122 #define GET_VAL(val,type) \
123 { *val = *(type *)instr; instr += sizeof(type); *len += sizeof(type); }
124
125 *len = 0;
126 GET_VAL( &mod, BYTE );
127 rm = mod & 7;
128 mod >>= 6;
129
130 if (mod == 3)
131 {
132 switch(rm)
133 {
134 case 0: return (BYTE *)&context->Eax;
135 case 1: return (BYTE *)&context->Ecx;
136 case 2: return (BYTE *)&context->Edx;
137 case 3: return (BYTE *)&context->Ebx;
138 case 4: return (BYTE *)&context->Esp;
139 case 5: return (BYTE *)&context->Ebp;
140 case 6: return (BYTE *)&context->Esi;
141 case 7: return (BYTE *)&context->Edi;
142 }
143 }
144
145 if (long_addr)
146 {
147 if (rm == 4)
148 {
149 BYTE sib;
150 GET_VAL( &sib, BYTE );
151 rm = sib & 7;
152 ss = sib >> 6;
153 switch(sib >> 3)
154 {
155 case 0: index = context->Eax; break;
156 case 1: index = context->Ecx; break;
157 case 2: index = context->Edx; break;
158 case 3: index = context->Ebx; break;
159 case 4: index = 0; break;
160 case 5: index = context->Ebp; break;
161 case 6: index = context->Esi; break;
162 case 7: index = context->Edi; break;
163 }
164 }
165
166 switch(rm)
167 {
168 case 0: base = context->Eax; seg = context->SegDs; break;
169 case 1: base = context->Ecx; seg = context->SegDs; break;
170 case 2: base = context->Edx; seg = context->SegDs; break;
171 case 3: base = context->Ebx; seg = context->SegDs; break;
172 case 4: base = context->Esp; seg = context->SegSs; break;
173 case 5: base = context->Ebp; seg = context->SegSs; break;
174 case 6: base = context->Esi; seg = context->SegDs; break;
175 case 7: base = context->Edi; seg = context->SegDs; break;
176 }
177 switch (mod)
178 {
179 case 0:
180 if (rm == 5) /* special case: ds:(disp32) */
181 {
182 GET_VAL( &base, DWORD );
183 seg = context->SegDs;
184 }
185 break;
186
187 case 1: /* 8-bit disp */
188 GET_VAL( &off, BYTE );
189 base += (signed char)off;
190 break;
191
192 case 2: /* 32-bit disp */
193 GET_VAL( &off, DWORD );
194 base += (signed long)off;
195 break;
196 }
197 }
198 else /* short address */
199 {
200 switch(rm)
201 {
202 case 0: /* ds:(bx,si) */
203 base = LOWORD(context->Ebx) + LOWORD(context->Esi);
204 seg = context->SegDs;
205 break;
206 case 1: /* ds:(bx,di) */
207 base = LOWORD(context->Ebx) + LOWORD(context->Edi);
208 seg = context->SegDs;
209 break;
210 case 2: /* ss:(bp,si) */
211 base = LOWORD(context->Ebp) + LOWORD(context->Esi);
212 seg = context->SegSs;
213 break;
214 case 3: /* ss:(bp,di) */
215 base = LOWORD(context->Ebp) + LOWORD(context->Edi);
216 seg = context->SegSs;
217 break;
218 case 4: /* ds:(si) */
219 base = LOWORD(context->Esi);
220 seg = context->SegDs;
221 break;
222 case 5: /* ds:(di) */
223 base = LOWORD(context->Edi);
224 seg = context->SegDs;
225 break;
226 case 6: /* ss:(bp) */
227 base = LOWORD(context->Ebp);
228 seg = context->SegSs;
229 break;
230 case 7: /* ds:(bx) */
231 base = LOWORD(context->Ebx);
232 seg = context->SegDs;
233 break;
234 }
235
236 switch(mod)
237 {
238 case 0:
239 if (rm == 6) /* special case: ds:(disp16) */
240 {
241 GET_VAL( &base, WORD );
242 seg = context->SegDs;
243 }
244 break;
245
246 case 1: /* 8-bit disp */
247 GET_VAL( &off, BYTE );
248 base += (signed char)off;
249 break;
250
251 case 2: /* 16-bit disp */
252 GET_VAL( &off, WORD );
253 base += (signed short)off;
254 break;
255 }
256 base &= 0xffff;
257 }
258 if (segprefix != -1) seg = segprefix;
259
260 /* Make sure the segment and offset are valid */
261 if (IS_SELECTOR_SYSTEM(seg)) return (BYTE *)(base + (index << ss));
262 if ((seg & 7) != 7) return NULL;
263 wine_ldt_get_entry( seg, &entry );
264 if (wine_ldt_is_empty( &entry )) return NULL;
265 if (wine_ldt_get_limit(&entry) < (base + (index << ss))) return NULL;
266 return (char *)wine_ldt_get_base(&entry) + base + (index << ss);
267 #undef GET_VAL
268 }
269
270
271 /***********************************************************************
272 * INSTR_EmulateLDS
273 *
274 * Emulate the LDS (and LES,LFS,etc.) instruction.
275 */
276 static BOOL INSTR_EmulateLDS( CONTEXT86 *context, BYTE *instr, int long_op,
277 int long_addr, int segprefix, int *len )
278 {
279 WORD seg;
280 BYTE *regmodrm = instr + 1 + (*instr == 0x0f);
281 BYTE *addr = INSTR_GetOperandAddr( context, regmodrm,
282 long_addr, segprefix, len );
283 if (!addr)
284 return FALSE; /* Unable to emulate it */
285 seg = *(WORD *)(addr + (long_op ? 4 : 2));
286
287 if (!INSTR_ReplaceSelector( context, &seg ))
288 return FALSE; /* Unable to emulate it */
289
290 /* Now store the offset in the correct register */
291
292 switch((*regmodrm >> 3) & 7)
293 {
294 case 0:
295 if (long_op) context->Eax = *(DWORD *)addr;
296 else SET_LOWORD(context->Eax,*(WORD *)addr);
297 break;
298 case 1:
299 if (long_op) context->Ecx = *(DWORD *)addr;
300 else SET_LOWORD(context->Ecx,*(WORD *)addr);
301 break;
302 case 2:
303 if (long_op) context->Edx = *(DWORD *)addr;
304 else SET_LOWORD(context->Edx,*(WORD *)addr);
305 break;
306 case 3:
307 if (long_op) context->Ebx = *(DWORD *)addr;
308 else SET_LOWORD(context->Ebx,*(WORD *)addr);
309 break;
310 case 4:
311 if (long_op) context->Esp = *(DWORD *)addr;
312 else SET_LOWORD(context->Esp,*(WORD *)addr);
313 break;
314 case 5:
315 if (long_op) context->Ebp = *(DWORD *)addr;
316 else SET_LOWORD(context->Ebp,*(WORD *)addr);
317 break;
318 case 6:
319 if (long_op) context->Esi = *(DWORD *)addr;
320 else SET_LOWORD(context->Esi,*(WORD *)addr);
321 break;
322 case 7:
323 if (long_op) context->Edi = *(DWORD *)addr;
324 else SET_LOWORD(context->Edi,*(WORD *)addr);
325 break;
326 }
327
328 /* Store the correct segment in the segment register */
329
330 switch(*instr)
331 {
332 case 0xc4: context->SegEs = seg; break; /* les */
333 case 0xc5: context->SegDs = seg; break; /* lds */
334 case 0x0f: switch(instr[1])
335 {
336 case 0xb2: context->SegSs = seg; break; /* lss */
337 case 0xb4: context->SegFs = seg; break; /* lfs */
338 case 0xb5: context->SegGs = seg; break; /* lgs */
339 }
340 break;
341 }
342
343 /* Add the opcode size to the total length */
344
345 *len += 1 + (*instr == 0x0f);
346 return TRUE;
347 }
348
349 /***********************************************************************
350 * INSTR_inport
351 *
352 * input on a I/O port
353 */
354 static DWORD INSTR_inport( WORD port, int size, CONTEXT86 *context )
355 {
356 DWORD res = IO_inport( port, size );
357 if (TRACE_ON(io))
358 {
359 switch(size)
360 {
361 case 1:
362 DPRINTF( "0x%x < %02x @ %04x:%04x\n", port, LOBYTE(res),
363 (WORD)context->SegCs, LOWORD(context->Eip));
364 break;
365 case 2:
366 DPRINTF( "0x%x < %04x @ %04x:%04x\n", port, LOWORD(res),
367 (WORD)context->SegCs, LOWORD(context->Eip));
368 break;
369 case 4:
370 DPRINTF( "0x%x < %08lx @ %04x:%04x\n", port, res,
371 (WORD)context->SegCs, LOWORD(context->Eip));
372 break;
373 }
374 }
375 return res;
376 }
377
378
379 /***********************************************************************
380 * INSTR_outport
381 *
382 * output on a I/O port
383 */
384 static void INSTR_outport( WORD port, int size, DWORD val, CONTEXT86 *context )
385 {
386 IO_outport( port, size, val );
387 if (TRACE_ON(io))
388 {
389 switch(size)
390 {
391 case 1:
392 DPRINTF("0x%x > %02x @ %04x:%04x\n", port, LOBYTE(val),
393 (WORD)context->SegCs, LOWORD(context->Eip));
394 break;
395 case 2:
396 DPRINTF("0x%x > %04x @ %04x:%04x\n", port, LOWORD(val),
397 (WORD)context->SegCs, LOWORD(context->Eip));
398 break;
399 case 4:
400 DPRINTF("0x%x > %08lx @ %04x:%04x\n", port, val,
401 (WORD)context->SegCs, LOWORD(context->Eip));
402 break;
403 }
404 }
405 }
406
407
408 /***********************************************************************
409 * INSTR_EmulateInstruction
410 *
411 * Emulate a privileged instruction.
412 * Returns exception code, or 0 if emulation successful.
413 */
414 DWORD INSTR_EmulateInstruction( CONTEXT86 *context )
415 {
416 int prefix, segprefix, prefixlen, len, repX, long_op, long_addr;
417 BYTE *instr;
418 DWORD ret = EXCEPTION_PRIV_INSTRUCTION;
419
420 long_op = long_addr = (!ISV86(context) && IS_SELECTOR_32BIT(context->SegCs));
421 instr = make_ptr( context, context->SegCs, context->Eip, TRUE );
422 if (!instr) return ret;
423
424 /* First handle any possible prefix */
425
426 segprefix = -1; /* no prefix */
427 prefix = 1;
428 repX = 0;
429 prefixlen = 0;
430 while(prefix)
431 {
432 switch(*instr)
433 {
434 case 0x2e:
435 segprefix = context->SegCs;
436 break;
437 case 0x36:
438 segprefix = context->SegSs;
439 break;
440 case 0x3e:
441 segprefix = context->SegDs;
442 break;
443 case 0x26:
444 segprefix = context->SegEs;
445 break;
446 case 0x64:
447 segprefix = context->SegFs;
448 break;
449 case 0x65:
450 segprefix = context->SegGs;
451 break;
452 case 0x66:
453 long_op = !long_op; /* opcode size prefix */
454 break;
455 case 0x67:
456 long_addr = !long_addr; /* addr size prefix */
457 break;
458 case 0xf0: /* lock */
459 break;
460 case 0xf2: /* repne */
461 repX = 1;
462 break;
463 case 0xf3: /* repe */
464 repX = 2;
465 break;
466 default:
467 prefix = 0; /* no more prefixes */
468 break;
469 }
470 if (prefix)
471 {
472 instr++;
473 prefixlen++;
474 }
475 }
476
477 /* Now look at the actual instruction */
478
479 switch(*instr)
480 {
481 case 0x07: /* pop es */
482 case 0x17: /* pop ss */
483 case 0x1f: /* pop ds */
484 {
485 WORD seg = *(WORD *)get_stack( context );
486 if (INSTR_ReplaceSelector( context, &seg ))
487 {
488 switch(*instr)
489 {
490 case 0x07: context->SegEs = seg; break;
491 case 0x17: context->SegSs = seg; break;
492 case 0x1f: context->SegDs = seg; break;
493 }
494 add_stack(context, long_op ? 4 : 2);
495 context->Eip += prefixlen + 1;
496 return 0;
497 }
498 }
499 break; /* Unable to emulate it */
500
501 case 0x0f: /* extended instruction */
502 switch(instr[1])
503 {
504 case 0x22: /* mov eax, crX */
505 switch (instr[2]) {
506 case 0xc0:
507 ERR("mov eax,cr0 at 0x%08lx, EAX=0x%08lx\n",
508 context->Eip,context->Eax );
509 context->Eip += prefixlen+3;
510 return 0;
511 default:
512 break; /*fallthrough to bad instruction handling */
513 }
514 break; /*fallthrough to bad instruction handling */
515 case 0x20: /* mov crX, eax */
516 switch (instr[2]) {
517 case 0xe0: /* mov cr4, eax */
518 /* CR4 register . See linux/arch/i386/mm/init.c, X86_CR4_ defs
519 * bit 0: VME Virtual Mode Exception ?
520 * bit 1: PVI Protected mode Virtual Interrupt
521 * bit 2: TSD Timestamp disable
522 * bit 3: DE Debugging extensions
523 * bit 4: PSE Page size extensions
524 * bit 5: PAE Physical address extension
525 * bit 6: MCE Machine check enable
526 * bit 7: PGE Enable global pages
527 * bit 8: PCE Enable performance counters at IPL3
528 */
529 ERR("mov cr4,eax at 0x%08lx\n",context->Eip);
530 context->Eax = 0;
531 context->Eip += prefixlen+3;
532 return 0;
533 case 0xc0: /* mov cr0, eax */
534 ERR("mov cr0,eax at 0x%08lx\n",context->Eip);
535 context->Eax = 0x10; /* FIXME: set more bits ? */
536 context->Eip += prefixlen+3;
537 return 0;
538 default: /* fallthrough to illegal instruction */
539 break;
540 }
541 /* fallthrough to illegal instruction */
542 break;
543 case 0xa1: /* pop fs */
544 {
545 WORD seg = *(WORD *)get_stack( context );
546 if (INSTR_ReplaceSelector( context, &seg ))
547 {
548 context->SegFs = seg;
549 add_stack(context, long_op ? 4 : 2);
550 context->Eip += prefixlen + 2;
551 return 0;
552 }
553 }
554 break;
555 case 0xa9: /* pop gs */
556 {
557 WORD seg = *(WORD *)get_stack( context );
558 if (INSTR_ReplaceSelector( context, &seg ))
559 {
560 context->SegGs = seg;
561 add_stack(context, long_op ? 4 : 2);
562 context->Eip += prefixlen + 2;
563 return 0;
564 }
565 }
566 break;
567 case 0xb2: /* lss addr,reg */
568 case 0xb4: /* lfs addr,reg */
569 case 0xb5: /* lgs addr,reg */
570 if (INSTR_EmulateLDS( context, instr, long_op,
571 long_addr, segprefix, &len ))
572 {
573 context->Eip += prefixlen + len;
574 return 0;
575 }
576 break;
577 }
578 break; /* Unable to emulate it */
579
580 case 0x6c: /* insb */
581 case 0x6d: /* insw/d */
582 case 0x6e: /* outsb */
583 case 0x6f: /* outsw/d */
584 {
585 int typ = *instr; /* Just in case it's overwritten. */
586 int outp = (typ >= 0x6e);
587 unsigned long count = repX ?
588 (long_addr ? context->Ecx : LOWORD(context->Ecx)) : 1;
589 int opsize = (typ & 1) ? (long_op ? 4 : 2) : 1;
590 int step = (context->EFlags & 0x400) ? -opsize : +opsize;
591 int seg = outp ? context->SegDs : context->SegEs; /* FIXME: is this right? */
592
593 if (outp)
594 /* FIXME: Check segment readable. */
595 (void)0;
596 else
597 /* FIXME: Check segment writeable. */
598 (void)0;
599
600 if (repX)
601 {
602 if (long_addr) context->Ecx = 0;
603 else SET_LOWORD(context->Ecx,0);
604 }
605
606 while (count-- > 0)
607 {
608 void *data;
609 WORD dx = LOWORD(context->Edx);
610 if (outp)
611 {
612 data = make_ptr( context, seg, context->Esi, long_addr );
613 if (long_addr) context->Esi += step;
614 else ADD_LOWORD(context->Esi,step);
615 }
616 else
617 {
618 data = make_ptr( context, seg, context->Edi, long_addr );
619 if (long_addr) context->Edi += step;
620 else ADD_LOWORD(context->Edi,step);
621 }
622
623 switch (typ)
624 {
625 case 0x6c:
626 *(BYTE *)data = INSTR_inport( dx, 1, context );
627 break;
628 case 0x6d:
629 if (long_op)
630 *(DWORD *)data = INSTR_inport( dx, 4, context );
631 else
632 *(WORD *)data = INSTR_inport( dx, 2, context );
633 break;
634 case 0x6e:
635 INSTR_outport( dx, 1, *(BYTE *)data, context );
636 break;
637 case 0x6f:
638 if (long_op)
639 INSTR_outport( dx, 4, *(DWORD *)data, context );
640 else
641 INSTR_outport( dx, 2, *(WORD *)data, context );
642 break;
643 }
644 }
645 context->Eip += prefixlen + 1;
646 }
647 return 0;
648
649 case 0x8e: /* mov XX,segment_reg */
650 {
651 WORD seg;
652 BYTE *addr = INSTR_GetOperandAddr(context, instr + 1,
653 long_addr, segprefix, &len );
654 if (!addr)
655 break; /* Unable to emulate it */
656 seg = *(WORD *)addr;
657 if (!INSTR_ReplaceSelector( context, &seg ))
658 break; /* Unable to emulate it */
659
660 switch((instr[1] >> 3) & 7)
661 {
662 case 0:
663 context->SegEs = seg;
664 context->Eip += prefixlen + len + 1;
665 return 0;
666 case 1: /* cs */
667 break;
668 case 2:
669 context->SegSs = seg;
670 context->Eip += prefixlen + len + 1;
671 return 0;
672 case 3:
673 context->SegDs = seg;
674 context->Eip += prefixlen + len + 1;
675 return 0;
676 case 4:
677 context->SegFs = seg;
678 context->Eip += prefixlen + len + 1;
679 return 0;
680 case 5:
681 context->SegGs = seg;
682 context->Eip += prefixlen + len + 1;
683 return 0;
684 case 6: /* unused */
685 case 7: /* unused */
686 break;
687 }
688 }
689 break; /* Unable to emulate it */
690
691 case 0xc4: /* les addr,reg */
692 case 0xc5: /* lds addr,reg */
693 if (INSTR_EmulateLDS( context, instr, long_op,
694 long_addr, segprefix, &len ))
695 {
696 context->Eip += prefixlen + len;
697 return 0;
698 }
699 break; /* Unable to emulate it */
700
701 case 0xcd: /* int <XX> */
702 if (IS_SELECTOR_SYSTEM(context->SegCs))
703 {
704 /* Win32 applications cannot use interrupts */
705 ret = EXCEPTION_ACCESS_VIOLATION;
706 break;
707 }
708 else if (!Dosvm.EmulateInterruptPM && !DPMI_LoadDosSystem())
709 {
710 ERR("could not initialize interrupt handling\n");
711 }
712 else
713 {
714 context->Eip += prefixlen + 2;
715 Dosvm.EmulateInterruptPM( context, instr[1] );
716 return 0;
717 }
718 break; /* Unable to emulate it */
719
720 case 0xcf: /* iret */
721 if (long_op)
722 {
723 DWORD *stack = get_stack( context );
724 context->Eip = *stack++;
725 context->SegCs = *stack++;
726 context->EFlags = *stack;
727 add_stack(context, 3*sizeof(DWORD)); /* Pop the return address and flags */
728 }
729 else
730 {
731 WORD *stack = get_stack( context );
732 context->Eip = *stack++;
733 context->SegCs = *stack++;
734 SET_LOWORD(context->EFlags,*stack);
735 add_stack(context, 3*sizeof(WORD)); /* Pop the return address and flags */
736 }
737 return 0;
738
739 case 0xe4: /* inb al,XX */
740 SET_LOBYTE(context->Eax,INSTR_inport( instr[1], 1, context ));
741 context->Eip += prefixlen + 2;
742 return 0;
743
744 case 0xe5: /* in (e)ax,XX */
745 if (long_op)
746 context->Eax = INSTR_inport( instr[1], 4, context );
747 else
748 SET_LOWORD(context->Eax, INSTR_inport( instr[1], 2, context ));
749 context->Eip += prefixlen + 2;
750 return 0;
751
752 case 0xe6: /* outb XX,al */
753 INSTR_outport( instr[1], 1, LOBYTE(context->Eax), context );
754 context->Eip += prefixlen + 2;
755 return 0;
756
757 case 0xe7: /* out XX,(e)ax */
758 if (long_op)
759 INSTR_outport( instr[1], 4, context->Eax, context );
760 else
761 INSTR_outport( instr[1], 2, LOWORD(context->Eax), context );
762 context->Eip += prefixlen + 2;
763 return 0;
764
765 case 0xec: /* inb al,dx */
766 SET_LOBYTE(context->Eax, INSTR_inport( LOWORD(context->Edx), 1, context ) );
767 context->Eip += prefixlen + 1;
768 return 0;
769
770 case 0xed: /* in (e)ax,dx */
771 if (long_op)
772 context->Eax = INSTR_inport( LOWORD(context->Edx), 4, context );
773 else
774 SET_LOWORD(context->Eax, INSTR_inport( LOWORD(context->Edx), 2, context ));
775 context->Eip += prefixlen + 1;
776 return 0;
777
778 case 0xee: /* outb dx,al */
779 INSTR_outport( LOWORD(context->Edx), 1, LOBYTE(context->Eax), context );
780 context->Eip += prefixlen + 1;
781 return 0;
782
783 case 0xef: /* out dx,(e)ax */
784 if (long_op)
785 INSTR_outport( LOWORD(context->Edx), 4, context->Eax, context );
786 else
787 INSTR_outport( LOWORD(context->Edx), 2, LOWORD(context->Eax), context );
788 context->Eip += prefixlen + 1;
789 return 0;
790
791 case 0xfa: /* cli */
792 NtCurrentTeb()->dpmi_vif = 0;
793 context->Eip += prefixlen + 1;
794 return 0;
795
796 case 0xfb: /* sti */
797 NtCurrentTeb()->dpmi_vif = 1;
798 context->Eip += prefixlen + 1;
799 if (NtCurrentTeb()->vm86_pending)
800 {
801 NtCurrentTeb()->vm86_pending = 0;
802 return EXCEPTION_VM86_STI;
803 }
804 return 0;
805 }
806 return ret; /* Unable to emulate it */
807 }
808
809 #endif /* __i386__ */
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