| 1 | /* $Id: task.h,v 1.3 2000-02-05 02:42:19 sandervl Exp $ */
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| 2 | /*
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| 3 | * Task definitions
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| 4 | *
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| 5 | * Copyright 1995 Alexandre Julliard
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| 6 | */
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| 7 |
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| 8 | #ifndef __WINE_TASK_H
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| 9 | #define __WINE_TASK_H
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| 10 |
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| 11 | #include "windef.h"
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| 12 |
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| 13 | #include "pshpack1.h"
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| 14 |
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| 15 | /* Process database (i.e. a normal DOS PSP) */
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| 16 |
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| 17 | typedef struct
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| 18 | {
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| 19 | WORD int20; /* 00 int 20h instruction */
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| 20 | WORD nextParagraph; /* 02 Segment of next paragraph */
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| 21 | BYTE reserved1;
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| 22 | BYTE dispatcher[5]; /* 05 Long call to DOS */
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| 23 | FARPROC16 savedint22 WINE_PACKED; /* 0a Saved int 22h handler */
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| 24 | FARPROC16 savedint23 WINE_PACKED; /* 0e Saved int 23h handler */
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| 25 | FARPROC16 savedint24 WINE_PACKED; /* 12 Saved int 24h handler */
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| 26 | WORD parentPSP; /* 16 Selector of parent PSP */
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| 27 | BYTE fileHandles[20]; /* 18 Open file handles */
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| 28 | HANDLE16 environment; /* 2c Selector of environment */
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| 29 | WORD reserved2[2];
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| 30 | WORD nbFiles; /* 32 Number of file handles */
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| 31 | SEGPTR fileHandlesPtr; /* 34 Pointer to file handle table */
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| 32 | HANDLE16 hFileHandles; /* 38 Handle to fileHandlesPtr */
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| 33 | WORD reserved3[17];
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| 34 | BYTE fcb1[16]; /* 5c First FCB */
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| 35 | BYTE fcb2[20]; /* 6c Second FCB */
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| 36 | BYTE cmdLine[128]; /* 80 Command-line (first byte is len)*/
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| 37 | BYTE padding[16]; /* Some apps access beyond the end of the cmd line */
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| 38 | } PDB16;
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| 39 |
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| 40 |
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| 41 | /* Segment containing MakeProcInstance() thunks */
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| 42 | typedef struct
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| 43 | {
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| 44 | WORD next; /* Selector of next segment */
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| 45 | WORD magic; /* Thunks signature */
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| 46 | WORD unused;
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| 47 | WORD free; /* Head of the free list */
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| 48 | WORD thunks[4]; /* Each thunk is 4 words long */
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| 49 | } THUNKS;
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| 50 |
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| 51 | #define THUNK_MAGIC ('P' | ('T' << 8))
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| 52 |
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| 53 | struct _TEB;
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| 54 | struct _WSINFO;
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| 55 | struct _NE_MODULE;
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| 56 |
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| 57 | /* signal proc typedef */
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| 58 | typedef void (* CALLBACK USERSIGNALPROC)(HANDLE16, UINT16, UINT16,
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| 59 | HINSTANCE16, HQUEUE16);
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| 60 |
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| 61 | /* Task database. See 'Windows Internals' p. 226.
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| 62 | * Note that 16-bit OLE 2 libs like to read it directly
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| 63 | * so we have to keep entry offsets as they are.
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| 64 | */
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| 65 | typedef struct _TDB
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| 66 | {
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| 67 | HTASK16 hNext; /* 00 Selector of next TDB */
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| 68 | DWORD ss_sp WINE_PACKED; /* 02 Stack pointer of task */
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| 69 | WORD nEvents; /* 06 Events for this task */
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| 70 | INT16 priority; /* 08 Task priority, -32..15 */
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| 71 | WORD unused1; /* 0a */
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| 72 | HTASK16 hSelf; /* 0c Selector of this TDB */
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| 73 | HANDLE16 hPrevInstance; /* 0e Previous instance of module */
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| 74 | DWORD unused2; /* 10 */
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| 75 | WORD ctrlword8087; /* 14 80x87 control word */
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| 76 | WORD flags; /* 16 Task flags */
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| 77 | UINT16 error_mode; /* 18 Error mode (see SetErrorMode)*/
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| 78 | WORD version; /* 1a Expected Windows version */
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| 79 | HANDLE16 hInstance; /* 1c Instance handle for task */
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| 80 | HMODULE16 hModule; /* 1e Module handle */
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| 81 | HQUEUE16 hQueue; /* 20 Selector of task queue */
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| 82 | HTASK16 hParent; /* 22 Selector of TDB of parent */
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| 83 | WORD signal_flags; /* 24 Flags for signal handler */
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| 84 | FARPROC16 sighandler WINE_PACKED; /* 26 Signal handler */
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| 85 | FARPROC16 userhandler WINE_PACKED; /* 2a USER signal handler */
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| 86 | FARPROC16 discardhandler WINE_PACKED; /* 2e Handler for GlobalNotify() */
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| 87 | DWORD int0 WINE_PACKED; /* 32 int 0 (divide by 0) handler */
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| 88 | DWORD int2 WINE_PACKED; /* 36 int 2 (NMI) handler */
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| 89 | DWORD int4 WINE_PACKED; /* 3a int 4 (INTO) handler */
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| 90 | DWORD int6 WINE_PACKED; /* 3e int 6 (invalid opc) handler */
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| 91 | DWORD int7 WINE_PACKED; /* 42 int 7 (coprocessor) handler */
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| 92 | DWORD int3e WINE_PACKED; /* 46 int 3e (80x87 emu) handler */
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| 93 | DWORD int75 WINE_PACKED; /* 4a int 75 (80x87 error) handler */
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| 94 | DWORD compat_flags WINE_PACKED; /* 4e Compatibility flags */
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| 95 | BYTE unused4[2]; /* 52 */
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| 96 | struct _TEB *teb; /* 54 Pointer to thread database */
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| 97 | BYTE unused5[8]; /* 58 */
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| 98 | HANDLE16 hPDB; /* 60 Selector of PDB (i.e. PSP) */
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| 99 | SEGPTR dta WINE_PACKED; /* 62 Current DTA */
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| 100 | BYTE curdrive; /* 66 Current drive */
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| 101 | BYTE curdir[65]; /* 67 Current directory */
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| 102 | WORD nCmdShow; /* a8 cmdShow parameter to WinMain */
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| 103 | HTASK16 hYieldTo; /* aa Next task to schedule */
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| 104 | DWORD dlls_to_init; /* ac Ptr to DLLs to initialize */
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| 105 | HANDLE16 hCSAlias; /* b0 Code segment for this TDB */
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| 106 | THUNKS thunks WINE_PACKED; /* b2 Make proc instance thunks */
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| 107 | WORD more_thunks[6*4]; /* c2 Space for 6 more thunks */
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| 108 | BYTE module_name[8]; /* f2 Module name for task */
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| 109 | WORD magic; /* fa TDB signature */
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| 110 | HANDLE hEvent; /* fc scheduler event handle */
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| 111 | PDB16 pdb; /* 100 PDB for this task */
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| 112 | } TDB;
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| 113 |
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| 114 | #define TDB_MAGIC ('T' | ('D' << 8))
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| 115 |
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| 116 | /* TDB flags */
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| 117 | #define TDBF_WINOLDAP 0x0001
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| 118 | #define TDBF_OS2APP 0x0008
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| 119 | #define TDBF_WIN32 0x0010
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| 120 |
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| 121 | /* Windows 3.1 USER signals */
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| 122 | #define USIG16_TERMINATION 0x0020
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| 123 | #define USIG16_DLL_LOAD 0x0040
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| 124 | #define USIG16_DLL_UNLOAD 0x0080
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| 125 | #define USIG16_GPF 0x0666
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| 126 |
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| 127 |
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| 128 | /* THHOOK Kernel Data Structure */
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| 129 | typedef struct _THHOOK
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| 130 | {
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| 131 | HANDLE16 hGlobalHeap; /* 00 (handle BURGERMASTER) */
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| 132 | WORD pGlobalHeap; /* 02 (selector BURGERMASTER) */
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| 133 | HMODULE16 hExeHead; /* 04 hFirstModule */
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| 134 | HMODULE16 hExeSweep; /* 06 (unused) */
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| 135 | HANDLE16 TopPDB; /* 08 (handle of KERNEL PDB) */
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| 136 | HANDLE16 HeadPDB; /* 0A (first PDB in list) */
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| 137 | HANDLE16 TopSizePDB; /* 0C (unused) */
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| 138 | HTASK16 HeadTDB; /* 0E hFirstTask */
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| 139 | HTASK16 CurTDB; /* 10 hCurrentTask */
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| 140 | HTASK16 LoadTDB; /* 12 (unused) */
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| 141 | HTASK16 LockTDB; /* 14 hLockedTask */
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| 142 | } THHOOK;
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| 143 |
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| 144 | #include "poppack.h"
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| 145 |
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| 146 | extern THHOOK *pThhook;
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| 147 | extern void (*TASK_AddTaskEntryBreakpoint)( HTASK16 hTask );
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| 148 |
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| 149 | extern BOOL TASK_Create( struct _NE_MODULE *pModule, UINT16 cmdShow );
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| 150 | extern void TASK_KillTask( HTASK16 hTask );
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| 151 | extern HTASK16 TASK_GetNextTask( HTASK16 hTask );
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| 152 | extern void TASK_Reschedule(void);
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| 153 | extern void TASK_CallToStart(void);
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| 154 | extern void TASK_InstallTHHook( THHOOK *pNewThook );
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| 155 | extern void TASK_CallTaskSignalProc( UINT16 uCode, HANDLE16 hTaskOrModule );
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| 156 |
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| 157 | extern HQUEUE16 WINAPI SetThreadQueue16( DWORD thread, HQUEUE16 hQueue );
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| 158 | extern HQUEUE16 WINAPI GetThreadQueue16( DWORD thread );
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| 159 | extern VOID WINAPI SetFastQueue16( DWORD thread, HANDLE hQueue );
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| 160 | extern HANDLE WINAPI GetFastQueue16( void );
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| 161 |
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| 162 |
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| 163 | #endif /* __WINE_TASK_H */
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