Source code of Windows XP (NT5)
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/*++ BUILD Version: 0001
* * WOW v1.0 * * Copyright (c) 1991, Microsoft Corporation * * TDB.H * 16-bit Kernel Task Data Block * * History: * Created 11-Feb-1992 by Matt Felton (mattfe) - from 16 bit tdb.inc * 7-apr-1992 mattfe updated to be win 3.1 compatible *--*/
/*
* NewExeHdr struct offsets. WOW32 uses these for getting expected winversion * directly from the exehdr. * */
#define NE_LOWINVER_OFFSET 0x3e
#define NE_HIWINVER_OFFSET 0x0c
#define FLAG_NE_PROPFONT 0x2000
/*
* Task Data Block - 16 Bit Kernel Data Structure * * Contains all 16 bit task specific data. * */
#define numTaskInts 7
#define THUNKELEM 8 // (62*8) = 512-16 (low arena overhead)
#define THUNKSIZE 8
/* XLATOFF */#pragma pack(2)
/* XLATON */
typedef struct TDB { /* tdb16 */
WORD TDB_next ; // next task in dispatch queue
WORD TDB_taskSP ; // Saved SS:SP for this task
WORD TDB_taskSS ; //
WORD TDB_nEvents ; // Task event counter
BYTE TDB_priority ; // Task priority (0 is highest)
BYTE TDB_thread_ordinal ; // ordinal number of this thread
WORD TDB_thread_next ; // next thread
WORD TDB_thread_tdb ; // the real TDB for this task
WORD TDB_thread_list ; // list of allocated thread structures
WORD TDB_thread_free ; // free list of availble thread structures
WORD TDB_thread_count ; // total count of tread structures
WORD TDB_FCW ; // Floating point control word
BYTE TDB_flags ; // Task flags
BYTE TDB_filler ; // keep word aligned
WORD TDB_ErrMode ; // Error mode for this task
WORD TDB_ExpWinVer ; // Expected Windows version for this task
WORD TDB_Module ; // Task module handle to free in killtask
WORD TDB_pModule ; // Pointer to the module database.
WORD TDB_Queue ; // Task Event Queue pointer
WORD TDB_Parent ; // TDB of the task that started this up
WORD TDB_SigAction ; // Action for app task signal
DWORD TDB_ASignalProc ; // App's Task Signal procedure address
DWORD TDB_USignalProc ; // User's Task Signal procedure address
DWORD TDB_GNotifyProc ; // Task global discard notify proc.
DWORD TDB_INTVECS[numTaskInts] ; // Task specfic harare interrupts
WORD TDB_CompatFlags ; // Compatibility flags
WORD TDB_CompatFlags2 ; // Upper 16 bits
WORD TDB_CompatHandle ; // for dBase bug
WORD TDB_WOWCompatFlagsEx ; // More WOW Compatibility flags
WORD TDB_WOWCompatFlagsEx2 ; // Upper 16 bits
BYTE TDB_Free[3] ; // Filler to keep TDB size unchanged
BYTE TDB_cLibrary ; // tracks add/del of ALL libs in system EMS
DWORD TDB_PHT ; // (HANDLE:OFFSET) to private handle table
WORD TDB_PDB ; // MSDOS Process Data Block (PDB)
DWORD TDB_DTA ; // MSDOS Disk Transfer Address
BYTE TDB_Drive ; // MSDOS current drive
BYTE TDB_Directory[65] ; // *** not used starting with win95
WORD TDB_Validity ; // initial AX to be passed to a task
WORD TDB_Yield_to ; // DirectedYield arg stored here
WORD TDB_LibInitSeg ; // segment address of libraries to init
WORD TDB_LibInitOff ; // MakeProcInstance thunks live here.
WORD TDB_MPI_Sel ; // Code selector for thunks
WORD TDB_MPI_Thunks[((THUNKELEM*THUNKSIZE)/2)]; //
BYTE TDB_ModName[8] ; // Name of Module.
WORD TDB_sig ; // Signature word to detect bogus code
DWORD TDB_ThreadID ; // 32-Bit Thread ID for this Task (use TDB_Filler Above)
DWORD TDB_hThread ; // 32-bit Thread Handle for this task
WORD TDB_WOWCompatFlags; // WOW Compatibility flags
WORD TDB_WOWCompatFlags2; // WOW Compatibility flags
#ifdef FE_SB
WORD TDB_WOWCompatFlagsJPN; // WOW Compatibility flags for JAPAN
WORD TDB_WOWCompatFlagsJPN2; // WOW Compatibility flags for JAPAN
#endif // FE_SB
DWORD TDB_vpfnAbortProc; // printer AbortProc
BYTE TDB_LFNDirectory[260]; // Long directory name
} TDB;typedef TDB UNALIGNED *PTDB;
// This bit is defined for the TDB_Drive field
#define TDB_DIR_VALID 0x80
#define TDB_SIGNATURE 0x4454
#define TDBF_OS2APP 0x8
#define TDBF_WINOLDAP 0x1
// NOTE TDB_ThreadID MUST be DWORD aligned or else it will fail on MIPS
/* XLATOFF */#pragma pack()
/* XLATON */
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