dlls/winedos/dosexe.h

   1 /*
   2  * DOS EXE loader
   3  *
   4  * Copyright 1998 Ove Kåven
   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 #ifndef __WINE_DOSEXE_H
  22 #define __WINE_DOSEXE_H
  23
  24 #include <stdarg.h>
  25
  26 #include "windef.h"
  27 #include "wine/library.h"
  28 #include "wine/windef16.h"
  29 #include "winbase.h"
  30 #include "winnt.h"     /* for PCONTEXT */
  31 #include "wincon.h"    /* for MOUSE_EVENT_RECORD */
  32
  33 #define MAX_DOS_DRIVES  26
  34
  35 struct _DOSEVENT;
  36
  37 /* amount of space reserved for relay stack */
  38 #define DOSVM_RELAY_DATA_SIZE 4096
  39
  40 /* various real-mode code stubs */
  41 struct DPMI_segments
  42 {
  43     WORD wrap_seg;
  44     WORD xms_seg;
  45     WORD dpmi_seg;
  46     WORD dpmi_sel;
  47     WORD int48_sel;
  48     WORD int16_sel;
  49     WORD relay_code_sel;
  50     WORD relay_data_sel;
  51 };
  52
  53 /* 48-bit segmented pointers for DOS DPMI32 */
  54 typedef struct {
  55   WORD  selector;
  56   DWORD offset;
  57 } SEGPTR48, FARPROC48;
  58
  59 #define DOSCONF_MEM_HIGH        0x0001
  60 #define DOSCONF_MEM_UMB         0x0002
  61 #define DOSCONF_NUMLOCK         0x0004
  62 #define DOSCONF_KEYB_CONV       0x0008
  63
  64 typedef struct {
  65     char lastdrive;
  66     int brk_flag;
  67     int files;
  68     int stacks_nr;
  69     int stacks_sz;
  70     int buf;
  71     int buf2;
  72     int fcbs;
  73     int flags;
  74     char *shell;
  75     char *country;
  76 } DOSCONF;
  77
  78 typedef void (*DOSRELAY)(CONTEXT86*,void*);
  79 typedef void (WINAPI *RMCBPROC)(CONTEXT86*);
  80 typedef void (WINAPI *INTPROC)(CONTEXT86*);
  81
  82 #define DOS_PRIORITY_REALTIME 0  /* IRQ0 */
  83 #define DOS_PRIORITY_KEYBOARD 1  /* IRQ1 */
  84 #define DOS_PRIORITY_VGA      2  /* IRQ9 */
  85 #define DOS_PRIORITY_MOUSE    5  /* IRQ12 */
  86 #define DOS_PRIORITY_SERIAL   10 /* IRQ4 */
  87
  88 extern WORD DOSVM_psp;     /* psp of current DOS task */
  89 extern WORD DOSVM_retval;  /* return value of previous DOS task */
  90 extern struct DPMI_segments *DOSVM_dpmi_segments;
  91
  92 #if defined(linux) && defined(__i386__) && defined(HAVE_SYS_VM86_H)
  93 # define MZ_SUPPORTED
  94 #endif /* linux-i386 */
  95
  96 /*
  97  * Declare some CONTEXT86.EFlags bits.
  98  * IF_MASK is only pushed into real mode stack.
  99  */
 100 #define V86_FLAG 0x00020000
 101 #define IF_MASK  0x00000200
 102 #define VIF_MASK 0x00080000
 103 #define VIP_MASK 0x00100000
 104
 105 #define ADD_LOWORD(dw,val)  ((dw) = ((dw) & 0xffff0000) | LOWORD((DWORD)(dw)+(val)))
 106
 107 #define PTR_REAL_TO_LIN(seg,off) ((void*)(((unsigned int)(seg) << 4) + LOWORD(off)))
 108
 109 /* NOTE: Interrupts might get called from four modes: real mode, 16-bit,
 110  *       32-bit segmented (DPMI32) and 32-bit linear (via DeviceIoControl).
 111  *       For automatic conversion of pointer
 112  *       parameters, interrupt handlers should use CTX_SEG_OFF_TO_LIN with
 113  *       the contents of a segment register as second and the contents of
 114  *       a *32-bit* general register as third parameter, e.g.
 115  *          CTX_SEG_OFF_TO_LIN( context, DS_reg(context), EDX_reg(context) )
 116  *       This will generate a linear pointer in all three cases:
 117  *         Real-Mode:   Seg*16 + LOWORD(Offset)
 118  *         16-bit:      convert (Seg, LOWORD(Offset)) to linear
 119  *         32-bit segmented: convert (Seg, Offset) to linear
 120  *         32-bit linear:    use Offset as linear address (DeviceIoControl!)
 121  *
 122  *       Real-mode is recognized by checking the V86 bit in the flags register,
 123  *       32-bit linear mode is recognized by checking whether 'seg' is
 124  *       a system selector (0 counts also as 32-bit segment) and 32-bit
 125  *       segmented mode is recognized by checking whether 'seg' is 32-bit
 126  *       selector which is neither system selector nor zero.
 127  */
 128 #define CTX_SEG_OFF_TO_LIN(context,seg,off) \
 129     (ISV86(context) ? PTR_REAL_TO_LIN((seg),(off)) : wine_ldt_get_ptr((seg),(off)))
 130
 131 #define INT_BARF(context,num) \
 132     ERR( "int%x: unknown/not implemented parameters:\n" \
 133                      "int%x: AX %04x, BX %04x, CX %04x, DX %04x, " \
 134                      "SI %04x, DI %04x, DS %04x, ES %04x\n", \
 135              (num), (num), LOWORD((context)->Eax), LOWORD((context)->Ebx), \
 136              LOWORD((context)->Ecx), LOWORD((context)->Edx), LOWORD((context)->Esi), \
 137              LOWORD((context)->Edi), (WORD)(context)->SegDs, (WORD)(context)->SegEs )
 138
 139 /* pushing on stack in 16 bit needs segment wrap around */
 140 #define PUSH_WORD16(context,val) \
 141     *((WORD*)CTX_SEG_OFF_TO_LIN((context), \
 142         (context)->SegSs, ADD_LOWORD( context->Esp, -2 ) )) = (val)
 143
 144 /* Macros for easier access to i386 context registers */
 145
 146 #define AX_reg(context)      ((WORD)(context)->Eax)
 147 #define BX_reg(context)      ((WORD)(context)->Ebx)
 148 #define CX_reg(context)      ((WORD)(context)->Ecx)
 149 #define DX_reg(context)      ((WORD)(context)->Edx)
 150 #define SI_reg(context)      ((WORD)(context)->Esi)
 151 #define DI_reg(context)      ((WORD)(context)->Edi)
 152
 153 #define AL_reg(context)      ((BYTE)(context)->Eax)
 154 #define AH_reg(context)      ((BYTE)((context)->Eax >> 8))
 155 #define BL_reg(context)      ((BYTE)(context)->Ebx)
 156 #define BH_reg(context)      ((BYTE)((context)->Ebx >> 8))
 157 #define CL_reg(context)      ((BYTE)(context)->Ecx)
 158 #define CH_reg(context)      ((BYTE)((context)->Ecx >> 8))
 159 #define DL_reg(context)      ((BYTE)(context)->Edx)
 160 #define DH_reg(context)      ((BYTE)((context)->Edx >> 8))
 161
 162 #define SET_CFLAG(context)   ((context)->EFlags |= 0x0001)
 163 #define RESET_CFLAG(context) ((context)->EFlags &= ~0x0001)
 164 #define SET_ZFLAG(context)   ((context)->EFlags |= 0x0040)
 165 #define RESET_ZFLAG(context) ((context)->EFlags &= ~0x0040)
 166 #define ISV86(context)       ((context)->EFlags & 0x00020000)
 167
 168 #define SET_AX(context,val)  ((void)((context)->Eax = ((context)->Eax & ~0xffff) | (WORD)(val)))
 169 #define SET_BX(context,val)  ((void)((context)->Ebx = ((context)->Ebx & ~0xffff) | (WORD)(val)))
 170 #define SET_CX(context,val)  ((void)((context)->Ecx = ((context)->Ecx & ~0xffff) | (WORD)(val)))
 171 #define SET_DX(context,val)  ((void)((context)->Edx = ((context)->Edx & ~0xffff) | (WORD)(val)))
 172 #define SET_SI(context,val)  ((void)((context)->Esi = ((context)->Esi & ~0xffff) | (WORD)(val)))
 173 #define SET_DI(context,val)  ((void)((context)->Edi = ((context)->Edi & ~0xffff) | (WORD)(val)))
 174
 175 #define SET_AL(context,val)  ((void)((context)->Eax = ((context)->Eax & ~0xff) | (BYTE)(val)))
 176 #define SET_BL(context,val)  ((void)((context)->Ebx = ((context)->Ebx & ~0xff) | (BYTE)(val)))
 177 #define SET_CL(context,val)  ((void)((context)->Ecx = ((context)->Ecx & ~0xff) | (BYTE)(val)))
 178 #define SET_DL(context,val)  ((void)((context)->Edx = ((context)->Edx & ~0xff) | (BYTE)(val)))
 179
 180 #define SET_AH(context,val)  ((void)((context)->Eax = ((context)->Eax & ~0xff00) | (((BYTE)(val)) << 8)))
 181 #define SET_BH(context,val)  ((void)((context)->Ebx = ((context)->Ebx & ~0xff00) | (((BYTE)(val)) << 8)))
 182 #define SET_CH(context,val)  ((void)((context)->Ecx = ((context)->Ecx & ~0xff00) | (((BYTE)(val)) << 8)))
 183 #define SET_DH(context,val)  ((void)((context)->Edx = ((context)->Edx & ~0xff00) | (((BYTE)(val)) << 8)))
 184
 185 #include <pshpack1.h>
 186
 187 typedef struct
 188 {
 189     WORD  Com1Addr;                  /* 00: COM1 I/O address */
 190     WORD  Com2Addr;                  /* 02: COM2 I/O address */
 191     WORD  Com3Addr;                  /* 04: COM3 I/O address */
 192     WORD  Com4Addr;                  /* 06: COM4 I/O address */
 193     WORD  Lpt1Addr;                  /* 08: LPT1 I/O address */
 194     WORD  Lpt2Addr;                  /* 0a: LPT2 I/O address */
 195     WORD  Lpt3Addr;                  /* 0c: LPT3 I/O address */
 196     WORD  Lpt4Addr;                  /* 0e: LPT4 I/O address */
 197     WORD  InstalledHardware;         /* 10: Installed hardware flags */
 198     BYTE  POSTstatus;                /* 12: Power-On Self Test status */
 199     WORD  MemSize;                   /* 13: Base memory size in Kb */
 200     WORD  unused1;                   /* 15: Manufacturing test scratch pad */
 201     BYTE  KbdFlags1;                 /* 17: Keyboard flags 1 */
 202     BYTE  KbdFlags2;                 /* 18: Keyboard flags 2 */
 203     BYTE  unused2;                   /* 19: Keyboard driver workspace */
 204     WORD  NextKbdCharPtr;            /* 1a: Next character in kbd buffer */
 205     WORD  FirstKbdCharPtr;           /* 1c: First character in kbd buffer */
 206     WORD  KbdBuffer[16];             /* 1e: Keyboard buffer */
 207     BYTE  DisketteStatus1;           /* 3e: Diskette recalibrate status */
 208     BYTE  DisketteStatus2;           /* 3f: Diskette motor status */
 209     BYTE  DisketteStatus3;           /* 40: Diskette motor timeout */
 210     BYTE  DisketteStatus4;           /* 41: Diskette last operation status */
 211     BYTE  DiskStatus[7];             /* 42: Disk status/command bytes */
 212     BYTE  VideoMode;                 /* 49: Video mode */
 213     WORD  VideoColumns;              /* 4a: Number of columns */
 214     WORD  VideoPageSize;             /* 4c: Video page size in bytes */
 215     WORD  VideoPageStartAddr;        /* 4e: Video page start address */
 216     BYTE  VideoCursorPos[16];        /* 50: Cursor position for 8 pages, column/row order */
 217     WORD  VideoCursorType;           /* 60: Video cursor type */
 218     BYTE  VideoCurPage;              /* 62: Video current page */
 219     WORD  VideoCtrlAddr;             /* 63: Video controller address */
 220     BYTE  VideoReg1;                 /* 65: Video mode select register */
 221     BYTE  VideoReg2;                 /* 66: Video CGA palette register */
 222     DWORD ResetEntry;                /* 67: Warm reset entry point */
 223     BYTE  LastIRQ;                   /* 6b: Last unexpected interrupt */
 224     DWORD Ticks;                     /* 6c: Ticks since midnight */
 225     BYTE  TicksOverflow;             /* 70: Timer overflow if past midnight */
 226     BYTE  CtrlBreakFlag;             /* 71: Ctrl-Break flag */
 227     WORD  ResetFlag;                 /* 72: POST Reset flag */
 228     BYTE  DiskOpStatus;              /* 74: Last hard-disk operation status */
 229     BYTE  NbHardDisks;               /* 75: Number of hard disks */
 230     BYTE  DiskCtrlByte;              /* 76: Disk control byte */
 231     BYTE  DiskIOPort;                /* 77: Disk I/O port offset */
 232     BYTE  LptTimeout[4];             /* 78: Timeouts for parallel ports */
 233     BYTE  ComTimeout[4];             /* 7c: Timeouts for serial ports */
 234     WORD  KbdBufferStart;            /* 80: Keyboard buffer start */
 235     WORD  KbdBufferEnd;              /* 82: Keyboard buffer end */
 236     BYTE  RowsOnScreenMinus1;        /* 84: EGA only */
 237     WORD  BytesPerChar;              /* 85: EGA only */
 238     BYTE  ModeOptions;               /* 87: EGA only */
 239     BYTE  FeatureBitsSwitches;       /* 88: EGA only */
 240     BYTE  VGASettings;               /* 89: VGA misc settings */
 241     BYTE  DisplayCombination;        /* 8A: VGA display combinations */
 242     BYTE  DiskDataRate;              /* 8B: Last disk data rate selected */
 243 } BIOSDATA;
 244
 245 #include <poppack.h>
 246
 247 /* module.c */
 248 extern void WINAPI MZ_LoadImage( LPCSTR filename, HANDLE hFile );
 249 extern BOOL WINAPI MZ_Exec( CONTEXT86 *context, LPCSTR filename, BYTE func, LPVOID paramblk );
 250 extern void WINAPI MZ_Exit( CONTEXT86 *context, BOOL cs_psp, WORD retval );
 251 extern BOOL WINAPI MZ_Current( void );
 252 extern void WINAPI MZ_AllocDPMITask( void );
 253 extern void WINAPI MZ_RunInThread( PAPCFUNC proc, ULONG_PTR arg );
 254 extern BOOL DOSVM_IsWin16(void);
 255
 256 /* dosvm.c */
 257 extern void DOSVM_SendQueuedEvents( CONTEXT86 * );
 258 extern void WINAPI DOSVM_AcknowledgeIRQ( CONTEXT86 * );
 259 extern INT WINAPI DOSVM_Enter( CONTEXT86 *context );
 260 extern void WINAPI DOSVM_Wait( CONTEXT86 * );
 261 extern DWORD WINAPI DOSVM_Loop( HANDLE hThread );
 262 extern void WINAPI DOSVM_QueueEvent( INT irq, INT priority, DOSRELAY relay, LPVOID data );
 263 extern void WINAPI DOSVM_PIC_ioport_out( WORD port, BYTE val );
 264 extern void WINAPI DOSVM_SetTimer( UINT ticks );
 265 extern UINT WINAPI DOSVM_GetTimer( void );
 266
 267 /* devices.c */
 268 extern void DOSDEV_InstallDOSDevices(void);
 269 extern DWORD DOSDEV_Console(void);
 270 extern DWORD DOSDEV_FindCharDevice(char*name);
 271 extern int DOSDEV_Peek(DWORD dev, BYTE*data);
 272 extern int DOSDEV_Read(DWORD dev, DWORD buf, int buflen);
 273 extern int DOSDEV_Write(DWORD dev, DWORD buf, int buflen, int verify);
 274 extern int DOSDEV_IoctlRead(DWORD dev, DWORD buf, int buflen);
 275 extern int DOSDEV_IoctlWrite(DWORD dev, DWORD buf, int buflen);
 276 extern void DOSDEV_SetSharingRetry(WORD delay, WORD count);
 277 extern SEGPTR DOSDEV_GetLOL(BOOL v86);
 278
 279 /* dma.c */
 280 extern int DMA_Transfer(int channel,int reqlength,void* buffer);
 281 extern void DMA_ioport_out( WORD port, BYTE val );
 282 extern BYTE DMA_ioport_in( WORD port );
 283
 284 /* dosaspi.c */
 285 extern void WINAPI DOSVM_ASPIHandler(CONTEXT86*);
 286
 287 /* dosconf.c */
 288 extern DOSCONF *DOSCONF_GetConfig( void );
 289
 290 /* dosmem.c */
 291 extern BOOL DOSMEM_InitDosMemory(void);
 292 extern BOOL DOSMEM_MapDosLayout(void);
 293 extern WORD   DOSMEM_AllocSelector(WORD); /* FIXME: to be removed */
 294 extern LPVOID DOSMEM_AllocBlock(UINT size, WORD* p);
 295 extern BOOL DOSMEM_FreeBlock(void* ptr);
 296 extern UINT DOSMEM_ResizeBlock(void* ptr, UINT size, BOOL exact);
 297 extern UINT DOSMEM_Available(void);
 298 extern BIOSDATA *DOSVM_BiosData( void );
 299
 300 /* fpu.c */
 301 extern void WINAPI DOSVM_Int34Handler(CONTEXT86*);
 302 extern void WINAPI DOSVM_Int35Handler(CONTEXT86*);
 303 extern void WINAPI DOSVM_Int36Handler(CONTEXT86*);
 304 extern void WINAPI DOSVM_Int37Handler(CONTEXT86*);
 305 extern void WINAPI DOSVM_Int38Handler(CONTEXT86*);
 306 extern void WINAPI DOSVM_Int39Handler(CONTEXT86*);
 307 extern void WINAPI DOSVM_Int3aHandler(CONTEXT86*);
 308 extern void WINAPI DOSVM_Int3bHandler(CONTEXT86*);
 309 extern void WINAPI DOSVM_Int3cHandler(CONTEXT86*);
 310 extern void WINAPI DOSVM_Int3dHandler(CONTEXT86*);
 311 extern void WINAPI DOSVM_Int3eHandler(CONTEXT86*);
 312
 313 /* himem.c */
 314 extern void DOSVM_InitSegments(void);
 315 extern LPVOID DOSVM_AllocUMB(DWORD);
 316 extern LPVOID DOSVM_AllocCodeUMB(DWORD, WORD *, WORD *);
 317 extern LPVOID DOSVM_AllocDataUMB(DWORD, WORD *, WORD *);
 318
 319 /* int09.c */
 320 extern void WINAPI DOSVM_Int09Handler(CONTEXT86*);
 321 extern void WINAPI DOSVM_Int09SendScan(BYTE scan,BYTE ascii);
 322 extern BYTE WINAPI DOSVM_Int09ReadScan(BYTE*ascii);
 323
 324 /* int10.c */
 325 extern void WINAPI DOSVM_Int10Handler(CONTEXT86*);
 326 extern void WINAPI DOSVM_PutChar(BYTE ascii);
 327
 328 /* int11.c */
 329 extern void WINAPI DOSVM_Int11Handler(CONTEXT86*);
 330
 331 /* int12.c */
 332 extern void WINAPI DOSVM_Int12Handler(CONTEXT86*);
 333
 334 /* int13.c */
 335 extern void WINAPI DOSVM_Int13Handler(CONTEXT86*);
 336
 337 /* int15.c */
 338 extern void WINAPI DOSVM_Int15Handler(CONTEXT86*);
 339
 340 /* int1a.c */
 341 extern void WINAPI DOSVM_Int1aHandler(CONTEXT86*);
 342
 343 /* int16.c */
 344 extern void WINAPI DOSVM_Int16Handler(CONTEXT86*);
 345 extern BOOL WINAPI DOSVM_Int16ReadChar( BYTE *, BYTE *, CONTEXT86 * );
 346 extern int WINAPI DOSVM_Int16AddChar(BYTE ascii,BYTE scan);
 347
 348 /* int17.c */
 349 extern void WINAPI DOSVM_Int17Handler(CONTEXT86*);
 350
 351 /* int19.c */
 352 extern void WINAPI DOSVM_Int19Handler(CONTEXT86*);
 353
 354 /* int20.c */
 355 extern void WINAPI DOSVM_Int20Handler(CONTEXT86*);
 356
 357 /* int21.c */
 358 extern void WINAPI DOSVM_Int21Handler(CONTEXT86*);
 359
 360 /* int25.c */
 361 BOOL DOSVM_RawRead( BYTE, DWORD, DWORD, BYTE *, BOOL );
 362 void WINAPI DOSVM_Int25Handler( CONTEXT86 * );
 363
 364 /* int26.c */
 365 BOOL DOSVM_RawWrite( BYTE, DWORD, DWORD, BYTE *, BOOL );
 366 void WINAPI DOSVM_Int26Handler( CONTEXT86 * );
 367
 368 /* int29.c */
 369 extern void WINAPI DOSVM_Int29Handler(CONTEXT86*);
 370
 371 /* int2a.c */
 372 extern void WINAPI DOSVM_Int2aHandler(CONTEXT86*);
 373
 374 /* int2f.c */
 375 extern void WINAPI DOSVM_Int2fHandler(CONTEXT86*);
 376
 377 /* int31.c */
 378 extern void WINAPI DOSVM_Int31Handler(CONTEXT86*);
 379 extern void WINAPI DOSVM_RawModeSwitchHandler(CONTEXT86*);
 380 extern BOOL DOSVM_IsDos32(void);
 381 extern FARPROC16 WINAPI DPMI_AllocInternalRMCB(RMCBPROC);
 382 extern void WINAPI DPMI_FreeInternalRMCB(FARPROC16);
 383 extern int DPMI_CallRMProc(CONTEXT86*,LPWORD,int,int);
 384 extern BOOL DOSVM_CheckWrappers(CONTEXT86*);
 385
 386 /* int33.c */
 387 extern void WINAPI DOSVM_Int33Handler(CONTEXT86*);
 388 extern void WINAPI DOSVM_Int33Message(UINT,WPARAM,LPARAM);
 389 extern void WINAPI DOSVM_Int33Console(MOUSE_EVENT_RECORD*);
 390
 391 /* int41.c */
 392 extern void WINAPI DOSVM_Int41Handler(CONTEXT86*);
 393
 394 /* int4b.c */
 395 extern void WINAPI DOSVM_Int4bHandler(CONTEXT86*);
 396
 397 /* int5c.c */
 398 extern void WINAPI DOSVM_Int5cHandler(CONTEXT86*);
 399
 400 /* int67.c */
 401 extern void WINAPI DOSVM_Int67Handler(CONTEXT86*);
 402 extern void WINAPI EMS_Ioctl_Handler(CONTEXT86*);
 403
 404 /* interrupts.c */
 405 extern void WINAPI DOSVM_CallBuiltinHandler( CONTEXT86 *, BYTE );
 406 extern void WINAPI DOSVM_EmulateInterruptPM( CONTEXT86 *, BYTE );
 407 extern BOOL WINAPI DOSVM_EmulateInterruptRM( CONTEXT86 *, BYTE );
 408 extern FARPROC16   DOSVM_GetPMHandler16( BYTE );
 409 extern FARPROC48   DOSVM_GetPMHandler48( BYTE );
 410 extern FARPROC16   DOSVM_GetRMHandler( BYTE );
 411 extern void        DOSVM_HardwareInterruptPM( CONTEXT86 *, BYTE );
 412 extern void        DOSVM_HardwareInterruptRM( CONTEXT86 *, BYTE );
 413 extern void        DOSVM_SetPMHandler16( BYTE, FARPROC16 );
 414 extern void        DOSVM_SetPMHandler48( BYTE, FARPROC48 );
 415 extern void        DOSVM_SetRMHandler( BYTE, FARPROC16 );
 416
 417 /* relay.c */
 418 void DOSVM_RelayHandler( CONTEXT86 * );
 419 void DOSVM_BuildCallFrame( CONTEXT86 *, DOSRELAY, LPVOID );
 420
 421 /* soundblaster.c */
 422 extern void SB_ioport_out( WORD port, BYTE val );
 423 extern BYTE SB_ioport_in( WORD port );
 424
 425 /* ppdev.c */
 426 extern BOOL IO_pp_outp(int port, DWORD* res);
 427 extern int IO_pp_inp(int port, DWORD* res);
 428 extern char IO_pp_init(void);
 429
 430 /* timer.c */
 431 extern void WINAPI DOSVM_Int08Handler(CONTEXT86*);
 432
 433 /* xms.c */
 434 extern void WINAPI XMS_Handler(CONTEXT86*);
 435
 436 #endif /* __WINE_DOSEXE_H */