4 * Copyright 1995 Alexandre Julliard
11 #include "wine/windef16.h"
15 /* Process database (i.e. a normal DOS PSP) */
19 WORD int20
; /* 00 int 20h instruction */
20 WORD nextParagraph
; /* 02 Segment of next paragraph */
22 BYTE dispatcher
[5]; /* 05 Long call to DOS */
23 FARPROC16 savedint22 WINE_PACKED
; /* 0a Saved int 22h handler */
24 FARPROC16 savedint23 WINE_PACKED
; /* 0e Saved int 23h handler */
25 FARPROC16 savedint24 WINE_PACKED
; /* 12 Saved int 24h handler */
26 WORD parentPSP
; /* 16 Selector of parent PSP */
27 BYTE fileHandles
[20]; /* 18 Open file handles */
28 HANDLE16 environment
; /* 2c Selector of environment */
29 DWORD saveStack
; /* 2e SS:SP on last int21 call */
30 WORD nbFiles
; /* 32 Number of file handles */
31 SEGPTR fileHandlesPtr
; /* 34 Pointer to file handle table */
32 HANDLE16 hFileHandles
; /* 38 Handle to fileHandlesPtr */
34 BYTE fcb1
[16]; /* 5c First FCB */
35 BYTE fcb2
[20]; /* 6c Second FCB */
36 BYTE cmdLine
[128]; /* 80 Command-line (first byte is len)*/
37 BYTE padding
[16]; /* Some apps access beyond the end of the cmd line */
41 /* Segment containing MakeProcInstance() thunks */
44 WORD next
; /* Selector of next segment */
45 WORD magic
; /* Thunks signature */
47 WORD free
; /* Head of the free list */
48 WORD thunks
[4]; /* Each thunk is 4 words long */
51 #define THUNK_MAGIC ('P' | ('T' << 8))
57 /* signal proc typedef */
58 typedef void CALLBACK (*USERSIGNALPROC
)(HANDLE16
, UINT16
, UINT16
,
59 HINSTANCE16
, HQUEUE16
);
61 /* Task database. See 'Windows Internals' p. 226.
62 * Note that 16-bit OLE 2 libs like to read it directly
63 * so we have to keep entry offsets as they are.
67 HTASK16 hNext
; /* 00 Selector of next TDB */
68 DWORD ss_sp WINE_PACKED
; /* 02 Stack pointer of task */
69 WORD nEvents
; /* 06 Events for this task */
70 INT16 priority
; /* 08 Task priority, -32..15 */
71 WORD unused1
; /* 0a */
72 HTASK16 hSelf
; /* 0c Selector of this TDB */
73 HANDLE16 hPrevInstance
; /* 0e Previous instance of module */
74 DWORD unused2
; /* 10 */
75 WORD ctrlword8087
; /* 14 80x87 control word */
76 WORD flags
; /* 16 Task flags */
77 UINT16 error_mode
; /* 18 Error mode (see SetErrorMode)*/
78 WORD version
; /* 1a Expected Windows version */
79 HANDLE16 hInstance
; /* 1c Instance handle for task */
80 HMODULE16 hModule
; /* 1e Module handle */
81 HQUEUE16 hQueue
; /* 20 Selector of task queue */
82 HTASK16 hParent
; /* 22 Selector of TDB of parent */
83 WORD signal_flags
; /* 24 Flags for signal handler */
84 FARPROC16 sighandler WINE_PACKED
; /* 26 Signal handler */
85 FARPROC16 userhandler WINE_PACKED
; /* 2a USER signal handler */
86 FARPROC16 discardhandler WINE_PACKED
; /* 2e Handler for GlobalNotify() */
87 DWORD int0 WINE_PACKED
; /* 32 int 0 (divide by 0) handler */
88 DWORD int2 WINE_PACKED
; /* 36 int 2 (NMI) handler */
89 DWORD int4 WINE_PACKED
; /* 3a int 4 (INTO) handler */
90 DWORD int6 WINE_PACKED
; /* 3e int 6 (invalid opc) handler */
91 DWORD int7 WINE_PACKED
; /* 42 int 7 (coprocessor) handler */
92 DWORD int3e WINE_PACKED
; /* 46 int 3e (80x87 emu) handler */
93 DWORD int75 WINE_PACKED
; /* 4a int 75 (80x87 error) handler */
94 DWORD compat_flags WINE_PACKED
; /* 4e Compatibility flags */
95 BYTE unused4
[2]; /* 52 */
96 struct _TEB
*teb
; /* 54 Pointer to thread database */
97 BYTE unused5
[8]; /* 58 */
98 HANDLE16 hPDB
; /* 60 Selector of PDB (i.e. PSP) */
99 SEGPTR dta WINE_PACKED
; /* 62 Current DTA */
100 BYTE curdrive
; /* 66 Current drive */
101 BYTE curdir
[65]; /* 67 Current directory */
102 WORD nCmdShow
; /* a8 cmdShow parameter to WinMain */
103 HTASK16 hYieldTo
; /* aa Next task to schedule */
104 DWORD dlls_to_init
; /* ac Ptr to DLLs to initialize */
105 HANDLE16 hCSAlias
; /* b0 Code segment for this TDB */
106 THUNKS thunks WINE_PACKED
; /* b2 Make proc instance thunks */
107 WORD more_thunks
[6*4]; /* c2 Space for 6 more thunks */
108 BYTE module_name
[8]; /* f2 Module name for task */
109 WORD magic
; /* fa TDB signature */
110 HANDLE hEvent
; /* fc scheduler event handle */
111 PDB16 pdb
; /* 100 PDB for this task */
114 #define TDB_MAGIC ('T' | ('D' << 8))
117 #define TDBF_WINOLDAP 0x0001
118 #define TDBF_OS2APP 0x0008
119 #define TDBF_WIN32 0x0010
121 /* Windows 3.1 USER signals */
122 #define USIG16_TERMINATION 0x0020
123 #define USIG16_DLL_LOAD 0x0040
124 #define USIG16_DLL_UNLOAD 0x0080
125 #define USIG16_GPF 0x0666
128 /* THHOOK Kernel Data Structure */
129 typedef struct _THHOOK
131 HANDLE16 hGlobalHeap
; /* 00 (handle BURGERMASTER) */
132 WORD pGlobalHeap
; /* 02 (selector BURGERMASTER) */
133 HMODULE16 hExeHead
; /* 04 hFirstModule */
134 HMODULE16 hExeSweep
; /* 06 (unused) */
135 HANDLE16 TopPDB
; /* 08 (handle of KERNEL PDB) */
136 HANDLE16 HeadPDB
; /* 0A (first PDB in list) */
137 HANDLE16 TopSizePDB
; /* 0C (unused) */
138 HTASK16 HeadTDB
; /* 0E hFirstTask */
139 HTASK16 CurTDB
; /* 10 hCurrentTask */
140 HTASK16 LoadTDB
; /* 12 (unused) */
141 HTASK16 LockTDB
; /* 14 hLockedTask */
146 extern THHOOK
*pThhook
;
148 extern BOOL
TASK_Create( struct _NE_MODULE
*pModule
, UINT16 cmdShow
,
149 struct _TEB
*teb
, LPCSTR cmdline
, BYTE len
);
150 extern void TASK_ExitTask(void);
151 extern HTASK16
TASK_GetNextTask( HTASK16 hTask
);
152 extern void TASK_Reschedule(void);
153 extern void TASK_InstallTHHook( THHOOK
*pNewThook
);
154 extern void TASK_CallTaskSignalProc( UINT16 uCode
, HANDLE16 hTaskOrModule
);
156 #endif /* __WINE_TASK_H */