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![Eric Pouech](/assets/img/avatar_default.png)
Signed-off-by: Eric Pouech <eric.pouech@gmail.com> Signed-off-by: Alexandre Julliard <julliard@winehq.org>
1551 lines
42 KiB
C
1551 lines
42 KiB
C
/*
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* Task functions
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*
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* Copyright 1995 Alexandre Julliard
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#include <stdarg.h>
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#include <stdlib.h>
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#include <string.h>
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#include <assert.h>
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#include "windef.h"
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#include "winbase.h"
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#include "wingdi.h"
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#include "winnt.h"
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#include "wownt32.h"
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#include "winuser.h"
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#include "wine/winbase16.h"
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#include "winternl.h"
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#include "kernel16_private.h"
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#include "wine/debug.h"
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WINE_DEFAULT_DEBUG_CHANNEL(task);
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#include "pshpack1.h"
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struct thunk
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{
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BYTE movw;
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HANDLE16 instance;
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BYTE ljmp;
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FARPROC16 func;
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};
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/* Segment containing MakeProcInstance() thunks */
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typedef struct
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{
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WORD next; /* Selector of next segment */
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WORD magic; /* Thunks signature */
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WORD unused;
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WORD free; /* Head of the free list */
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struct thunk thunks[1];
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} THUNKS;
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#include "poppack.h"
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#define THUNK_MAGIC ('P' | ('T' << 8))
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/* Min. number of thunks allocated when creating a new segment */
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#define MIN_THUNKS 32
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#define TDB_MAGIC ('T' | ('D' << 8))
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static THHOOK DefaultThhook;
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THHOOK *pThhook = &DefaultThhook;
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#define hFirstTask (pThhook->HeadTDB)
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#define hLockedTask (pThhook->LockTDB)
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static UINT16 nTaskCount = 0;
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static HTASK16 initial_task, main_task;
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/***********************************************************************
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* TASK_InstallTHHook
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*/
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void TASK_InstallTHHook( THHOOK *pNewThhook )
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{
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THHOOK *pOldThhook = pThhook;
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pThhook = pNewThhook? pNewThhook : &DefaultThhook;
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*pThhook = *pOldThhook;
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}
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/***********************************************************************
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* TASK_GetPtr
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*/
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static TDB *TASK_GetPtr( HTASK16 hTask )
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{
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return GlobalLock16( hTask );
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}
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/***********************************************************************
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* TASK_GetCurrent
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*/
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TDB *TASK_GetCurrent(void)
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{
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return TASK_GetPtr( GetCurrentTask() );
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}
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/***********************************************************************
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* TASK_LinkTask
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*/
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static void TASK_LinkTask( HTASK16 hTask )
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{
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HTASK16 *prevTask;
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TDB *pTask;
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if (!(pTask = TASK_GetPtr( hTask ))) return;
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prevTask = &hFirstTask;
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while (*prevTask)
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{
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TDB *prevTaskPtr = TASK_GetPtr( *prevTask );
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if (prevTaskPtr->priority >= pTask->priority) break;
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prevTask = &prevTaskPtr->hNext;
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}
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pTask->hNext = *prevTask;
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*prevTask = hTask;
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nTaskCount++;
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}
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/***********************************************************************
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* TASK_UnlinkTask
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*/
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static void TASK_UnlinkTask( HTASK16 hTask )
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{
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HTASK16 *prevTask;
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TDB *pTask;
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prevTask = &hFirstTask;
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while (*prevTask && (*prevTask != hTask))
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{
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pTask = TASK_GetPtr( *prevTask );
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prevTask = &pTask->hNext;
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}
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if (*prevTask)
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{
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pTask = TASK_GetPtr( *prevTask );
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*prevTask = pTask->hNext;
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pTask->hNext = 0;
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nTaskCount--;
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}
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}
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/***********************************************************************
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* TASK_CreateThunks
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*
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* Create a thunk free-list in segment 'handle', starting from offset 'offset'
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* and containing 'count' entries.
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*/
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static void TASK_CreateThunks( HGLOBAL16 handle, WORD offset, WORD count )
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{
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int i;
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THUNKS *pThunk;
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pThunk = (THUNKS *)((BYTE *)GlobalLock16( handle ) + offset);
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pThunk->next = 0;
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pThunk->magic = THUNK_MAGIC;
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pThunk->free = FIELD_OFFSET( THUNKS, thunks );
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for (i = 0; i < count-1; i++)
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*(WORD *)&pThunk->thunks[i] = FIELD_OFFSET( THUNKS, thunks[i+1] );
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*(WORD *)&pThunk->thunks[i] = 0; /* Last thunk */
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}
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/***********************************************************************
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* TASK_AllocThunk
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*
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* Allocate a thunk for MakeProcInstance().
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*/
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static SEGPTR TASK_AllocThunk(void)
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{
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TDB *pTask;
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THUNKS *pThunk;
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WORD sel, base;
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if (!(pTask = TASK_GetCurrent())) return 0;
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sel = pTask->hCSAlias;
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pThunk = (THUNKS *)pTask->thunks;
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base = (char *)pThunk - (char *)pTask;
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while (!pThunk->free)
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{
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sel = pThunk->next;
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if (!sel) /* Allocate a new segment */
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{
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sel = GLOBAL_Alloc( GMEM_FIXED, FIELD_OFFSET( THUNKS, thunks[MIN_THUNKS] ),
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pTask->hPDB, LDT_FLAGS_CODE );
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if (!sel) return 0;
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TASK_CreateThunks( sel, 0, MIN_THUNKS );
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pThunk->next = sel;
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}
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pThunk = GlobalLock16( sel );
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base = 0;
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}
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base += pThunk->free;
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pThunk->free = *(WORD *)((BYTE *)pThunk + pThunk->free);
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return MAKESEGPTR( sel, base );
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}
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/***********************************************************************
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* TASK_FreeThunk
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*
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* Free a MakeProcInstance() thunk.
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*/
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static BOOL TASK_FreeThunk( SEGPTR thunk )
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{
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TDB *pTask;
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THUNKS *pThunk;
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WORD sel, base;
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if (!(pTask = TASK_GetCurrent())) return FALSE;
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sel = pTask->hCSAlias;
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pThunk = (THUNKS *)pTask->thunks;
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base = (char *)pThunk - (char *)pTask;
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while (sel && (sel != HIWORD(thunk)))
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{
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sel = pThunk->next;
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pThunk = GlobalLock16( sel );
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base = 0;
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}
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if (!sel) return FALSE;
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*(WORD *)((BYTE *)pThunk + LOWORD(thunk) - base) = pThunk->free;
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pThunk->free = LOWORD(thunk) - base;
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return TRUE;
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}
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/***********************************************************************
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* TASK_Create
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*
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* NOTE: This routine might be called by a Win32 thread. Thus, we need
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* to be careful to protect global data structures. We do this
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* by entering the Win16Lock while linking the task into the
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* global task list.
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*/
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static TDB *TASK_Create( NE_MODULE *pModule, UINT16 cmdShow, LPCSTR cmdline, BYTE len )
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{
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HTASK16 hTask;
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TDB *pTask;
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FARPROC16 proc;
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char curdir[MAX_PATH];
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HMODULE16 hModule = pModule ? pModule->self : 0;
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/* Allocate the task structure */
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hTask = GlobalAlloc16( GMEM_FIXED | GMEM_ZEROINIT, sizeof(TDB) );
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if (!hTask) return NULL;
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pTask = TASK_GetPtr( hTask );
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FarSetOwner16( hTask, hModule );
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/* Fill the task structure */
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pTask->hSelf = hTask;
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pTask->version = pModule ? pModule->ne_expver : 0x0400;
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pTask->hModule = hModule;
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pTask->hParent = GetCurrentTask();
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pTask->magic = TDB_MAGIC;
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pTask->nCmdShow = cmdShow;
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GetCurrentDirectoryA( sizeof(curdir), curdir );
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GetShortPathNameA( curdir, curdir, sizeof(curdir) );
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pTask->curdrive = (curdir[0] - 'A') | 0x80;
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lstrcpynA( pTask->curdir, curdir + 2, sizeof(pTask->curdir) );
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/* Create the thunks block */
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TASK_CreateThunks( hTask, (char *)pTask->thunks - (char *)pTask, 7 );
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/* Copy the module name */
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if (hModule)
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{
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char name[sizeof(pTask->module_name)+1];
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size_t len;
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GetModuleName16( hModule, name, sizeof(name) );
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len = strlen(name) + 1;
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memcpy(pTask->module_name, name, min(len,sizeof(pTask->module_name)));
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pTask->compat_flags = GetProfileIntA( "Compatibility", name, 0 );
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}
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/* Allocate a selector for the PDB */
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pTask->hPDB = GLOBAL_CreateBlock( GMEM_FIXED, &pTask->pdb, sizeof(PDB16),
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hModule, LDT_FLAGS_DATA );
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/* Fill the PDB */
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pTask->pdb.int20 = 0x20cd;
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pTask->pdb.dispatcher[0] = 0x9a; /* ljmp */
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proc = GetProcAddress16( GetModuleHandle16("KERNEL"), "DOS3Call" );
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memcpy( &pTask->pdb.dispatcher[1], &proc, sizeof(proc) );
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pTask->pdb.savedint22 = 0;
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pTask->pdb.savedint23 = 0;
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pTask->pdb.savedint24 = 0;
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pTask->pdb.fileHandlesPtr =
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MAKESEGPTR( GlobalHandleToSel16(pTask->hPDB), FIELD_OFFSET( PDB16, fileHandles ));
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pTask->pdb.hFileHandles = 0;
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memset( pTask->pdb.fileHandles, 0xff, sizeof(pTask->pdb.fileHandles) );
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/* FIXME: should we make a copy of the environment? */
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pTask->pdb.environment = SELECTOROF(GetDOSEnvironment16());
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pTask->pdb.nbFiles = 20;
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/* Fill the command line */
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if (!cmdline)
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{
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cmdline = GetCommandLineA();
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/* remove the first word (program name) */
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if (*cmdline == '"')
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if (!(cmdline = strchr( cmdline+1, '"' ))) cmdline = GetCommandLineA();
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while (*cmdline && (*cmdline != ' ') && (*cmdline != '\t')) cmdline++;
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while ((*cmdline == ' ') || (*cmdline == '\t')) cmdline++;
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len = strlen(cmdline);
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}
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if (len >= sizeof(pTask->pdb.cmdLine)) len = sizeof(pTask->pdb.cmdLine)-1;
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pTask->pdb.cmdLine[0] = len;
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memcpy( pTask->pdb.cmdLine + 1, cmdline, len );
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/* pTask->pdb.cmdLine[len+1] = 0; */
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TRACE("cmdline='%.*s' task=%04x\n", len, cmdline, hTask );
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/* Allocate a code segment alias for the TDB */
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pTask->hCSAlias = GLOBAL_CreateBlock( GMEM_FIXED, pTask, sizeof(TDB),
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pTask->hPDB, LDT_FLAGS_CODE );
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/* Default DTA overwrites command line */
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pTask->dta = MAKESEGPTR( pTask->hPDB, FIELD_OFFSET( PDB16, cmdLine ));
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/* Create scheduler event for 16-bit tasks */
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if ( !(pTask->flags & TDBF_WIN32) )
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NtCreateEvent( &pTask->hEvent, EVENT_ALL_ACCESS, NULL, NotificationEvent, FALSE );
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if (!initial_task) initial_task = hTask;
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return pTask;
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}
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/***********************************************************************
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* TASK_DeleteTask
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*/
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static void TASK_DeleteTask( HTASK16 hTask )
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{
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TDB *pTask;
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HGLOBAL16 hPDB;
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if (!(pTask = TASK_GetPtr( hTask ))) return;
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hPDB = pTask->hPDB;
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pTask->magic = 0xdead; /* invalidate signature */
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/* Free the selector aliases */
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GLOBAL_FreeBlock( pTask->hCSAlias );
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GLOBAL_FreeBlock( pTask->hPDB );
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/* Free the task module */
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FreeModule16( pTask->hModule );
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/* Free the task structure itself */
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GlobalFree16( hTask );
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/* Free all memory used by this task (including the 32-bit stack, */
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/* the environment block and the thunk segments). */
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GlobalFreeAll16( hPDB );
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}
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/***********************************************************************
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* TASK_CreateMainTask
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*
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* Create a task for the main (32-bit) process.
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*/
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void TASK_CreateMainTask(void)
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{
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TDB *pTask;
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STARTUPINFOA startup_info;
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UINT cmdShow = 1; /* SW_SHOWNORMAL but we don't want to include winuser.h here */
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GetStartupInfoA( &startup_info );
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if (startup_info.dwFlags & STARTF_USESHOWWINDOW) cmdShow = startup_info.wShowWindow;
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pTask = TASK_Create( NULL, cmdShow, NULL, 0 );
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if (!pTask)
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{
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ERR("could not create task for main process\n");
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ExitProcess(1);
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}
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pTask->flags |= TDBF_WIN32;
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pTask->hInstance = 0;
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pTask->hPrevInstance = 0;
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pTask->teb = NtCurrentTeb();
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/* Add the task to the linked list */
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/* (no need to get the win16 lock, we are the only thread at this point) */
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TASK_LinkTask( pTask->hSelf );
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main_task = pTask->hSelf;
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}
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struct create_data
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{
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TDB *task;
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WIN16_SUBSYSTEM_TIB *tib;
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};
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/* allocate the win16 TIB for a new 16-bit task */
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static WIN16_SUBSYSTEM_TIB *allocate_win16_tib( TDB *pTask )
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{
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WCHAR path[MAX_PATH];
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WIN16_SUBSYSTEM_TIB *tib;
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UNICODE_STRING *curdir;
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NE_MODULE *pModule = NE_GetPtr( pTask->hModule );
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if (!(tib = HeapAlloc( GetProcessHeap(), 0, sizeof(*tib) ))) return NULL;
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MultiByteToWideChar( CP_ACP, 0, NE_MODULE_NAME(pModule), -1, path, MAX_PATH );
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GetLongPathNameW( path, path, MAX_PATH );
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if (RtlCreateUnicodeString( &tib->exe_str, path )) tib->exe_name = &tib->exe_str;
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else tib->exe_name = NULL;
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RtlAcquirePebLock();
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if (NtCurrentTeb()->Tib.SubSystemTib)
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curdir = &((WIN16_SUBSYSTEM_TIB *)NtCurrentTeb()->Tib.SubSystemTib)->curdir.DosPath;
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else
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curdir = &NtCurrentTeb()->Peb->ProcessParameters->CurrentDirectory.DosPath;
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tib->curdir.DosPath.MaximumLength = sizeof(tib->curdir_buffer);
|
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tib->curdir.DosPath.Length = min( curdir->Length, tib->curdir.DosPath.MaximumLength-sizeof(WCHAR) );
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tib->curdir.DosPath.Buffer = tib->curdir_buffer;
|
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tib->curdir.Handle = 0;
|
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memcpy( tib->curdir_buffer, curdir->Buffer, tib->curdir.DosPath.Length );
|
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tib->curdir_buffer[tib->curdir.DosPath.Length/sizeof(WCHAR)] = 0;
|
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RtlReleasePebLock();
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return tib;
|
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}
|
|
|
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static inline void free_win16_tib( WIN16_SUBSYSTEM_TIB *tib )
|
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{
|
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if (tib->exe_name) RtlFreeUnicodeString( tib->exe_name );
|
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HeapFree( GetProcessHeap(), 0, tib );
|
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}
|
|
|
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/* startup routine for a new 16-bit thread */
|
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static DWORD CALLBACK task_start( LPVOID p )
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{
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struct create_data *data = p;
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TDB *pTask = data->task;
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DWORD ret;
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|
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kernel_get_thread_data()->htask16 = pTask->hSelf;
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NtCurrentTeb()->Tib.SubSystemTib = data->tib;
|
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HeapFree( GetProcessHeap(), 0, data );
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|
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_EnterWin16Lock();
|
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TASK_LinkTask( pTask->hSelf );
|
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pTask->teb = NtCurrentTeb();
|
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ret = NE_StartTask();
|
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_LeaveWin16Lock();
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return ret;
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}
|
|
|
|
|
|
/***********************************************************************
|
|
* TASK_SpawnTask
|
|
*
|
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* Spawn a new 16-bit task.
|
|
*/
|
|
HTASK16 TASK_SpawnTask( NE_MODULE *pModule, WORD cmdShow,
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LPCSTR cmdline, BYTE len, HANDLE *hThread )
|
|
{
|
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struct create_data *data = NULL;
|
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WIN16_SUBSYSTEM_TIB *tib;
|
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TDB *pTask;
|
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|
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if (!(pTask = TASK_Create( pModule, cmdShow, cmdline, len ))) return 0;
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if (!(tib = allocate_win16_tib( pTask ))) goto failed;
|
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if (!(data = HeapAlloc( GetProcessHeap(), 0, sizeof(*data)))) goto failed;
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data->task = pTask;
|
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data->tib = tib;
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if (!(*hThread = CreateThread( NULL, 0, task_start, data, 0, NULL ))) goto failed;
|
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return pTask->hSelf;
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|
|
failed:
|
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if (tib) free_win16_tib( tib );
|
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HeapFree( GetProcessHeap(), 0, data );
|
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TASK_DeleteTask( pTask->hSelf );
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return 0;
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}
|
|
|
|
|
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/***********************************************************************
|
|
* TASK_GetTaskFromThread
|
|
*/
|
|
HTASK16 TASK_GetTaskFromThread( DWORD thread )
|
|
{
|
|
TDB *p = TASK_GetPtr( hFirstTask );
|
|
while (p)
|
|
{
|
|
if (p->teb->ClientId.UniqueThread == (HANDLE)thread) return p->hSelf;
|
|
p = TASK_GetPtr( p->hNext );
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* TASK_CallTaskSignalProc
|
|
*/
|
|
static void TASK_CallTaskSignalProc( UINT16 uCode, HANDLE16 hTaskOrModule )
|
|
{
|
|
WORD args[5];
|
|
TDB *pTask = TASK_GetCurrent();
|
|
|
|
if ( !pTask || !pTask->userhandler ) return;
|
|
|
|
args[4] = hTaskOrModule;
|
|
args[3] = uCode;
|
|
args[2] = 0;
|
|
args[1] = pTask->hInstance;
|
|
args[0] = pTask->hQueue;
|
|
WOWCallback16Ex( (DWORD)pTask->userhandler, WCB16_PASCAL, sizeof(args), args, NULL );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* TASK_ExitTask
|
|
*/
|
|
void TASK_ExitTask(void)
|
|
{
|
|
WIN16_SUBSYSTEM_TIB *tib;
|
|
TDB *pTask;
|
|
DWORD lockCount;
|
|
|
|
/* Enter the Win16Lock to protect global data structures */
|
|
_EnterWin16Lock();
|
|
|
|
pTask = TASK_GetCurrent();
|
|
if ( !pTask )
|
|
{
|
|
_LeaveWin16Lock();
|
|
return;
|
|
}
|
|
|
|
TRACE("Killing task %04x\n", pTask->hSelf );
|
|
|
|
/* Perform USER cleanup */
|
|
|
|
TASK_CallTaskSignalProc( USIG16_TERMINATION, pTask->hSelf );
|
|
|
|
/* Remove the task from the list to be sure we never switch back to it */
|
|
TASK_UnlinkTask( pTask->hSelf );
|
|
|
|
if (!nTaskCount || (nTaskCount == 1 && hFirstTask == initial_task))
|
|
{
|
|
TRACE("this is the last task, exiting\n" );
|
|
ExitKernel16();
|
|
}
|
|
|
|
pTask->nEvents = 0;
|
|
|
|
if ( hLockedTask == pTask->hSelf )
|
|
hLockedTask = 0;
|
|
|
|
TASK_DeleteTask( pTask->hSelf );
|
|
|
|
if ((tib = NtCurrentTeb()->Tib.SubSystemTib))
|
|
{
|
|
free_win16_tib( tib );
|
|
NtCurrentTeb()->Tib.SubSystemTib = NULL;
|
|
}
|
|
|
|
/* ... and completely release the Win16Lock, just in case. */
|
|
ReleaseThunkLock( &lockCount );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* ExitKernel (KERNEL.2)
|
|
*
|
|
* Clean-up everything and exit the Wine process.
|
|
*/
|
|
void WINAPI ExitKernel16(void)
|
|
{
|
|
WriteOutProfiles16();
|
|
TerminateProcess( GetCurrentProcess(), 0 );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* InitTask (KERNEL.91)
|
|
*
|
|
* Called by the application startup code.
|
|
*/
|
|
void WINAPI InitTask16( CONTEXT *context )
|
|
{
|
|
TDB *pTask;
|
|
INSTANCEDATA *pinstance;
|
|
SEGPTR ptr;
|
|
|
|
context->Eax = 0;
|
|
if (!(pTask = TASK_GetCurrent())) return;
|
|
|
|
/* Note: we need to trust that BX/CX contain the stack/heap sizes,
|
|
as some apps, notably Visual Basic apps, *modify* the heap/stack
|
|
size of the instance data segment before calling InitTask() */
|
|
|
|
/* Initialize the INSTANCEDATA structure */
|
|
pinstance = MapSL( MAKESEGPTR(CURRENT_DS, 0) );
|
|
pinstance->stackmin = CURRENT_SP + sizeof( STACK16FRAME );
|
|
pinstance->stackbottom = pinstance->stackmin; /* yup, that's right. Confused me too. */
|
|
pinstance->stacktop = ( pinstance->stackmin > LOWORD(context->Ebx) ?
|
|
pinstance->stackmin - LOWORD(context->Ebx) : 0 ) + 150;
|
|
|
|
/* Initialize the local heap */
|
|
if (LOWORD(context->Ecx))
|
|
LocalInit16( GlobalHandleToSel16(pTask->hInstance), 0, LOWORD(context->Ecx) );
|
|
|
|
/* Initialize implicitly loaded DLLs */
|
|
NE_InitializeDLLs( pTask->hModule );
|
|
NE_DllProcessAttach( pTask->hModule );
|
|
|
|
/* Registers on return are:
|
|
* ax 1 if OK, 0 on error
|
|
* cx stack limit in bytes
|
|
* dx cmdShow parameter
|
|
* si instance handle of the previous instance
|
|
* di instance handle of the new task
|
|
* es:bx pointer to command line inside PSP
|
|
*
|
|
* 0 (=%bp) is pushed on the stack
|
|
*/
|
|
ptr = stack16_push( sizeof(WORD) );
|
|
*(WORD *)MapSL(ptr) = 0;
|
|
context->Esp -= 2;
|
|
|
|
context->Eax = 1;
|
|
|
|
if (!pTask->pdb.cmdLine[0]) context->Ebx = 0x80;
|
|
else
|
|
{
|
|
LPBYTE p = &pTask->pdb.cmdLine[1];
|
|
while ((*p == ' ') || (*p == '\t')) p++;
|
|
context->Ebx = 0x80 + (p - pTask->pdb.cmdLine);
|
|
}
|
|
context->Ecx = pinstance->stacktop;
|
|
context->Edx = pTask->nCmdShow;
|
|
context->Esi = (DWORD)pTask->hPrevInstance;
|
|
context->Edi = (DWORD)pTask->hInstance;
|
|
context->SegEs = (WORD)pTask->hPDB;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* WaitEvent (KERNEL.30)
|
|
*/
|
|
BOOL16 WINAPI WaitEvent16( HTASK16 hTask )
|
|
{
|
|
TDB *pTask;
|
|
|
|
if (!hTask) hTask = GetCurrentTask();
|
|
pTask = TASK_GetPtr( hTask );
|
|
|
|
if (pTask->flags & TDBF_WIN32)
|
|
{
|
|
FIXME("called for Win32 thread (%04lx)!\n", GetCurrentThreadId());
|
|
return TRUE;
|
|
}
|
|
|
|
if (pTask->nEvents > 0)
|
|
{
|
|
pTask->nEvents--;
|
|
return FALSE;
|
|
}
|
|
|
|
if (pTask->teb == NtCurrentTeb())
|
|
{
|
|
DWORD lockCount;
|
|
|
|
NtResetEvent( pTask->hEvent, NULL );
|
|
ReleaseThunkLock( &lockCount );
|
|
SYSLEVEL_CheckNotLevel( 1 );
|
|
WaitForSingleObject( pTask->hEvent, INFINITE );
|
|
RestoreThunkLock( lockCount );
|
|
if (pTask->nEvents > 0) pTask->nEvents--;
|
|
}
|
|
else FIXME("for other task %04x cur=%04x\n",pTask->hSelf,GetCurrentTask());
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* PostEvent (KERNEL.31)
|
|
*/
|
|
void WINAPI PostEvent16( HTASK16 hTask )
|
|
{
|
|
TDB *pTask;
|
|
|
|
if (!hTask) hTask = GetCurrentTask();
|
|
if (!(pTask = TASK_GetPtr( hTask ))) return;
|
|
|
|
if (pTask->flags & TDBF_WIN32)
|
|
{
|
|
FIXME("called for Win32 thread (%04lx)!\n", (DWORD)pTask->teb->ClientId.UniqueThread );
|
|
return;
|
|
}
|
|
|
|
pTask->nEvents++;
|
|
|
|
if (pTask->nEvents == 1) NtSetEvent( pTask->hEvent, NULL );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* SetPriority (KERNEL.32)
|
|
*/
|
|
void WINAPI SetPriority16( HTASK16 hTask, INT16 delta )
|
|
{
|
|
TDB *pTask;
|
|
INT16 newpriority;
|
|
|
|
if (!hTask) hTask = GetCurrentTask();
|
|
if (!(pTask = TASK_GetPtr( hTask ))) return;
|
|
newpriority = pTask->priority + delta;
|
|
if (newpriority < -32) newpriority = -32;
|
|
else if (newpriority > 15) newpriority = 15;
|
|
|
|
pTask->priority = newpriority + 1;
|
|
TASK_UnlinkTask( pTask->hSelf );
|
|
TASK_LinkTask( pTask->hSelf );
|
|
pTask->priority--;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* LockCurrentTask (KERNEL.33)
|
|
*/
|
|
HTASK16 WINAPI LockCurrentTask16( BOOL16 bLock )
|
|
{
|
|
if (bLock) hLockedTask = GetCurrentTask();
|
|
else hLockedTask = 0;
|
|
return hLockedTask;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* IsTaskLocked (KERNEL.122)
|
|
*/
|
|
HTASK16 WINAPI IsTaskLocked16(void)
|
|
{
|
|
return hLockedTask;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* OldYield (KERNEL.117)
|
|
*/
|
|
void WINAPI OldYield16(void)
|
|
{
|
|
DWORD count;
|
|
|
|
ReleaseThunkLock(&count);
|
|
RestoreThunkLock(count);
|
|
}
|
|
|
|
/***********************************************************************
|
|
* WIN32_OldYield (KERNEL.447)
|
|
*/
|
|
void WINAPI WIN32_OldYield16(void)
|
|
{
|
|
DWORD count;
|
|
|
|
ReleaseThunkLock(&count);
|
|
RestoreThunkLock(count);
|
|
}
|
|
|
|
/***********************************************************************
|
|
* DirectedYield (KERNEL.150)
|
|
*/
|
|
void WINAPI DirectedYield16( HTASK16 hTask )
|
|
{
|
|
OldYield16();
|
|
}
|
|
|
|
/***********************************************************************
|
|
* Yield (KERNEL.29)
|
|
*/
|
|
void WINAPI Yield16(void)
|
|
{
|
|
TDB *pCurTask = TASK_GetCurrent();
|
|
|
|
if (pCurTask && pCurTask->hQueue)
|
|
{
|
|
HMODULE mod = GetModuleHandleA( "user32.dll" );
|
|
if (mod)
|
|
{
|
|
BOOL (WINAPI *pPeekMessageW)( MSG *msg, HWND hwnd, UINT first, UINT last, UINT flags );
|
|
pPeekMessageW = (void *)GetProcAddress( mod, "PeekMessageW" );
|
|
if (pPeekMessageW)
|
|
{
|
|
MSG msg;
|
|
pPeekMessageW( &msg, 0, 0, 0, PM_REMOVE | PM_QS_SENDMESSAGE );
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
OldYield16();
|
|
}
|
|
|
|
/***********************************************************************
|
|
* KERNEL_490 (KERNEL.490)
|
|
*/
|
|
HTASK16 WINAPI KERNEL_490( HTASK16 someTask )
|
|
{
|
|
if ( !someTask ) return 0;
|
|
|
|
FIXME("(%04x): stub\n", someTask );
|
|
return 0;
|
|
}
|
|
|
|
/***********************************************************************
|
|
* MakeProcInstance (KERNEL.51)
|
|
*/
|
|
FARPROC16 WINAPI MakeProcInstance16( FARPROC16 func, HANDLE16 hInstance )
|
|
{
|
|
struct thunk *thunk;
|
|
BYTE *lfunc;
|
|
SEGPTR thunkaddr;
|
|
WORD hInstanceSelector;
|
|
|
|
hInstanceSelector = GlobalHandleToSel16(hInstance);
|
|
|
|
TRACE("(%p, %04x);\n", func, hInstance);
|
|
|
|
if (!HIWORD(func)) {
|
|
/* Win95 actually protects via SEH, but this is better for debugging */
|
|
WARN("Ouch ! Called with invalid func %p !\n", func);
|
|
return NULL;
|
|
}
|
|
|
|
if ( (GlobalHandleToSel16(CURRENT_DS) != hInstanceSelector)
|
|
&& (hInstance != 0)
|
|
&& (hInstance != 0xffff) )
|
|
{
|
|
/* calling MPI with a foreign DSEG is invalid ! */
|
|
WARN("Problem with hInstance? Got %04x, using %04x instead\n",
|
|
hInstance,CURRENT_DS);
|
|
}
|
|
|
|
/* Always use the DSEG that MPI was entered with.
|
|
* We used to set hInstance to GetTaskDS16(), but this should be wrong
|
|
* as CURRENT_DS provides the DSEG value we need.
|
|
* ("calling" DS, *not* "task" DS !) */
|
|
hInstanceSelector = CURRENT_DS;
|
|
hInstance = GlobalHandle16(hInstanceSelector);
|
|
|
|
/* no thunking for DLLs */
|
|
if (NE_GetPtr(FarGetOwner16(hInstance))->ne_flags & NE_FFLAGS_LIBMODULE)
|
|
return func;
|
|
|
|
thunkaddr = TASK_AllocThunk();
|
|
if (!thunkaddr) return NULL;
|
|
thunk = MapSL( thunkaddr );
|
|
lfunc = MapSL( (SEGPTR)func );
|
|
|
|
TRACE("(%p,%04x): got thunk %08lx\n", func, hInstance, thunkaddr );
|
|
if (((lfunc[0]==0x8c) && (lfunc[1]==0xd8)) || /* movw %ds, %ax */
|
|
((lfunc[0]==0x1e) && (lfunc[1]==0x58)) /* pushw %ds, popw %ax */
|
|
) {
|
|
WARN("This was the (in)famous \"thunk useless\" warning. We thought we have to overwrite with nop;nop;, but this isn't true.\n");
|
|
}
|
|
|
|
thunk->movw = 0xb8; /* movw instance, %ax */
|
|
thunk->instance = hInstanceSelector;
|
|
thunk->ljmp = 0xea; /* ljmp func */
|
|
thunk->func = func;
|
|
return (FARPROC16)thunkaddr;
|
|
/* CX reg indicates if thunkaddr != NULL, implement if needed */
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* FreeProcInstance (KERNEL.52)
|
|
*/
|
|
void WINAPI FreeProcInstance16( FARPROC16 func )
|
|
{
|
|
TRACE("(%p)\n", func );
|
|
TASK_FreeThunk( (SEGPTR)func );
|
|
}
|
|
|
|
/**********************************************************************
|
|
* TASK_GetCodeSegment
|
|
*
|
|
* Helper function for GetCodeHandle/GetCodeInfo: Retrieve the module
|
|
* and logical segment number of a given code segment.
|
|
*
|
|
* 'proc' either *is* already a pair of module handle and segment number,
|
|
* in which case there's nothing to do. Otherwise, it is a pointer to
|
|
* a function, and we need to retrieve the code segment. If the pointer
|
|
* happens to point to a thunk, we'll retrieve info about the code segment
|
|
* where the function pointed to by the thunk resides, not the thunk itself.
|
|
*
|
|
* FIXME: if 'proc' is a SNOOP16 return stub, we should retrieve info about
|
|
* the function the snoop code will return to ...
|
|
*
|
|
*/
|
|
static BOOL TASK_GetCodeSegment( FARPROC16 proc, NE_MODULE **ppModule,
|
|
SEGTABLEENTRY **ppSeg, int *pSegNr )
|
|
{
|
|
NE_MODULE *pModule = NULL;
|
|
SEGTABLEENTRY *pSeg = NULL;
|
|
int segNr=0;
|
|
|
|
/* Try pair of module handle / segment number */
|
|
pModule = GlobalLock16( HIWORD( proc ) );
|
|
if ( pModule && pModule->ne_magic == IMAGE_OS2_SIGNATURE )
|
|
{
|
|
segNr = LOWORD( proc );
|
|
if ( segNr && segNr <= pModule->ne_cseg )
|
|
pSeg = NE_SEG_TABLE( pModule ) + segNr-1;
|
|
}
|
|
|
|
/* Try thunk or function */
|
|
else
|
|
{
|
|
BYTE *thunk = MapSL( (SEGPTR)proc );
|
|
WORD selector;
|
|
|
|
if ((thunk[0] == 0xb8) && (thunk[3] == 0xea))
|
|
selector = thunk[6] + (thunk[7] << 8);
|
|
else
|
|
selector = HIWORD( proc );
|
|
|
|
pModule = NE_GetPtr( GlobalHandle16( selector ) );
|
|
pSeg = pModule? NE_SEG_TABLE( pModule ) : NULL;
|
|
|
|
if ( pModule )
|
|
for ( segNr = 1; segNr <= pModule->ne_cseg; segNr++, pSeg++ )
|
|
if ( GlobalHandleToSel16(pSeg->hSeg) == selector )
|
|
break;
|
|
|
|
if ( pModule && segNr > pModule->ne_cseg )
|
|
pSeg = NULL;
|
|
}
|
|
|
|
/* Abort if segment not found */
|
|
|
|
if ( !pModule || !pSeg )
|
|
return FALSE;
|
|
|
|
/* Return segment data */
|
|
|
|
if ( ppModule ) *ppModule = pModule;
|
|
if ( ppSeg ) *ppSeg = pSeg;
|
|
if ( pSegNr ) *pSegNr = segNr;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/**********************************************************************
|
|
* GetCodeHandle (KERNEL.93)
|
|
*/
|
|
DWORD WINAPI GetCodeHandle16( FARPROC16 proc )
|
|
{
|
|
SEGTABLEENTRY *pSeg;
|
|
|
|
if ( !TASK_GetCodeSegment( proc, NULL, &pSeg, NULL ) )
|
|
return 0;
|
|
|
|
return MAKELONG( pSeg->hSeg, GlobalHandleToSel16(pSeg->hSeg) );
|
|
}
|
|
|
|
/**********************************************************************
|
|
* GetCodeInfo (KERNEL.104)
|
|
*/
|
|
BOOL16 WINAPI GetCodeInfo16( FARPROC16 proc, SEGINFO *segInfo )
|
|
{
|
|
NE_MODULE *pModule;
|
|
SEGTABLEENTRY *pSeg;
|
|
int segNr;
|
|
|
|
if ( !TASK_GetCodeSegment( proc, &pModule, &pSeg, &segNr ) )
|
|
return FALSE;
|
|
|
|
/* Fill in segment information */
|
|
|
|
segInfo->offSegment = pSeg->filepos;
|
|
segInfo->cbSegment = pSeg->size;
|
|
segInfo->flags = pSeg->flags;
|
|
segInfo->cbAlloc = pSeg->minsize;
|
|
segInfo->h = pSeg->hSeg;
|
|
segInfo->alignShift = pModule->ne_align;
|
|
|
|
if ( segNr == pModule->ne_autodata )
|
|
segInfo->cbAlloc += pModule->ne_heap + pModule->ne_stack;
|
|
|
|
/* Return module handle in %es */
|
|
|
|
CURRENT_STACK16->es = GlobalHandleToSel16( pModule->self );
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
/**********************************************************************
|
|
* DefineHandleTable (KERNEL.94)
|
|
*/
|
|
BOOL16 WINAPI DefineHandleTable16( WORD wOffset )
|
|
{
|
|
FIXME("(%04x): stub ?\n", wOffset);
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* SetTaskQueue (KERNEL.34)
|
|
*/
|
|
HQUEUE16 WINAPI SetTaskQueue16( HTASK16 hTask, HQUEUE16 hQueue )
|
|
{
|
|
FIXME( "stub, should not get called\n" );
|
|
return 0xbeef;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GetTaskQueue (KERNEL.35)
|
|
*/
|
|
HQUEUE16 WINAPI GetTaskQueue16( HTASK16 hTask )
|
|
{
|
|
FIXME( "stub, should not get called\n" );
|
|
return 0xbeef;
|
|
}
|
|
|
|
/***********************************************************************
|
|
* SetThreadQueue (KERNEL.463)
|
|
*/
|
|
HQUEUE16 WINAPI SetThreadQueue16( DWORD thread, HQUEUE16 hQueue )
|
|
{
|
|
FIXME( "stub, should not get called\n" );
|
|
return 0xbeef;
|
|
}
|
|
|
|
/***********************************************************************
|
|
* GetThreadQueue (KERNEL.464)
|
|
*/
|
|
HQUEUE16 WINAPI GetThreadQueue16( DWORD thread )
|
|
{
|
|
FIXME( "stub, should not get called\n" );
|
|
return 0xbeef;
|
|
}
|
|
|
|
/***********************************************************************
|
|
* SetFastQueue (KERNEL.624)
|
|
*/
|
|
VOID WINAPI SetFastQueue16( DWORD thread, HQUEUE16 hQueue )
|
|
{
|
|
FIXME( "stub, should not get called\n" );
|
|
}
|
|
|
|
/***********************************************************************
|
|
* GetFastQueue (KERNEL.625)
|
|
*/
|
|
HQUEUE16 WINAPI GetFastQueue16( void )
|
|
{
|
|
FIXME( "stub, should not get called\n" );
|
|
return 0xbeef;
|
|
}
|
|
|
|
/***********************************************************************
|
|
* SwitchStackTo (KERNEL.108)
|
|
*/
|
|
void WINAPI SwitchStackTo16( WORD seg, WORD ptr, WORD top )
|
|
{
|
|
STACK16FRAME *oldFrame, *newFrame;
|
|
INSTANCEDATA *pData;
|
|
UINT16 copySize;
|
|
|
|
if (!(pData = GlobalLock16( seg ))) return;
|
|
TRACE( "old=%04x:%04x new=%04x:%04x\n", CURRENT_SS, CURRENT_SP, seg, ptr );
|
|
|
|
/* Save the old stack */
|
|
|
|
oldFrame = CURRENT_STACK16;
|
|
/* pop frame + args and push bp */
|
|
pData->old_ss = CURRENT_SS;
|
|
pData->old_sp = CURRENT_SP + sizeof(STACK16FRAME) + 2 * sizeof(WORD);
|
|
*(WORD *)MapSL(MAKESEGPTR(pData->old_ss, pData->old_sp)) = oldFrame->bp;
|
|
pData->stacktop = top;
|
|
pData->stackmin = ptr;
|
|
pData->stackbottom = ptr;
|
|
|
|
/* Switch to the new stack */
|
|
|
|
/* Note: we need to take the 3 arguments into account; otherwise,
|
|
* the stack will underflow upon return from this function.
|
|
*/
|
|
copySize = oldFrame->bp - pData->old_sp;
|
|
copySize += 3 * sizeof(WORD) + sizeof(STACK16FRAME);
|
|
CURRENT_SS = seg;
|
|
CURRENT_SP = ptr - copySize;
|
|
newFrame = CURRENT_STACK16;
|
|
|
|
/* Copy the stack frame and the local variables to the new stack */
|
|
|
|
memmove( newFrame, oldFrame, copySize );
|
|
newFrame->bp = ptr;
|
|
*(WORD *)MapSL( MAKESEGPTR( seg, ptr ) ) = 0; /* clear previous bp */
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* SwitchStackBack (KERNEL.109)
|
|
*/
|
|
void WINAPI SwitchStackBack16( CONTEXT *context )
|
|
{
|
|
STACK16FRAME *oldFrame, *newFrame;
|
|
INSTANCEDATA *pData;
|
|
|
|
if (!(pData = GlobalLock16(CURRENT_SS)))
|
|
return;
|
|
if (!pData->old_ss)
|
|
{
|
|
WARN("No previous SwitchStackTo\n" );
|
|
return;
|
|
}
|
|
TRACE( "restoring stack %04x:%04x\n", pData->old_ss, pData->old_sp );
|
|
|
|
oldFrame = CURRENT_STACK16;
|
|
|
|
/* Pop bp from the previous stack */
|
|
|
|
context->Ebp = (context->Ebp & ~0xffff) | *(WORD *)MapSL(MAKESEGPTR(pData->old_ss, pData->old_sp));
|
|
pData->old_sp += sizeof(WORD);
|
|
|
|
/* Switch back to the old stack */
|
|
|
|
CURRENT_SS = pData->old_ss;
|
|
CURRENT_SP = pData->old_sp - sizeof(STACK16FRAME);
|
|
context->SegSs = pData->old_ss;
|
|
context->Esp = pData->old_sp - sizeof(DWORD); /*ret addr*/
|
|
pData->old_ss = pData->old_sp = 0;
|
|
|
|
/* Build a stack frame for the return */
|
|
|
|
newFrame = CURRENT_STACK16;
|
|
newFrame->frame32 = oldFrame->frame32;
|
|
newFrame->module_cs = oldFrame->module_cs;
|
|
newFrame->callfrom_ip = oldFrame->callfrom_ip;
|
|
newFrame->entry_ip = oldFrame->entry_ip;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GetTaskQueueDS (KERNEL.118)
|
|
*/
|
|
void WINAPI GetTaskQueueDS16(void)
|
|
{
|
|
CURRENT_STACK16->ds = GlobalHandleToSel16( GetTaskQueue16(0) );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GetTaskQueueES (KERNEL.119)
|
|
*/
|
|
void WINAPI GetTaskQueueES16(void)
|
|
{
|
|
CURRENT_STACK16->es = GlobalHandleToSel16( GetTaskQueue16(0) );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GetCurrentTask (KERNEL32.@)
|
|
*/
|
|
HTASK16 WINAPI GetCurrentTask(void)
|
|
{
|
|
HTASK16 ret = kernel_get_thread_data()->htask16;
|
|
if (!ret) ret = main_task;
|
|
return ret;
|
|
}
|
|
|
|
/***********************************************************************
|
|
* GetCurrentTask (KERNEL.36)
|
|
*/
|
|
DWORD WINAPI WIN16_GetCurrentTask(void)
|
|
{
|
|
/* This is the version used by relay code; the first task is */
|
|
/* returned in the high word of the result */
|
|
return MAKELONG( GetCurrentTask(), hFirstTask );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GetCurrentPDB (KERNEL.37)
|
|
*
|
|
* UNDOC: returns PSP of KERNEL in high word
|
|
*/
|
|
DWORD WINAPI GetCurrentPDB16(void)
|
|
{
|
|
TDB *pTask;
|
|
|
|
if (!(pTask = TASK_GetCurrent())) return 0;
|
|
return MAKELONG(pTask->hPDB, 0); /* FIXME */
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GetCurPID (KERNEL.157)
|
|
*/
|
|
DWORD WINAPI GetCurPID16( DWORD unused )
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GetInstanceData (KERNEL.54)
|
|
*/
|
|
INT16 WINAPI GetInstanceData16( HINSTANCE16 instance, WORD buffer, INT16 len )
|
|
{
|
|
char *ptr = GlobalLock16( instance );
|
|
if (!ptr || !len) return 0;
|
|
if ((int)buffer + len >= 0x10000) len = 0x10000 - buffer;
|
|
memcpy( (char *)GlobalLock16(CURRENT_DS) + buffer, ptr + buffer, len );
|
|
return len;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GetExeVersion (KERNEL.105)
|
|
*/
|
|
WORD WINAPI GetExeVersion16(void)
|
|
{
|
|
TDB *pTask;
|
|
|
|
if (!(pTask = TASK_GetCurrent())) return 0;
|
|
return pTask->version;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GetLPErrMode (KERNEL.99)
|
|
*/
|
|
SEGPTR WINAPI GetLPErrMode(void)
|
|
{
|
|
FIXME("(): stub\n");
|
|
return 0;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* SetErrorMode (KERNEL.107)
|
|
*/
|
|
UINT16 WINAPI SetErrorMode16( UINT16 mode )
|
|
{
|
|
TDB *pTask;
|
|
if (!(pTask = TASK_GetCurrent())) return 0;
|
|
pTask->error_mode = mode;
|
|
return SetErrorMode( mode );
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GetNumTasks (KERNEL.152)
|
|
*/
|
|
UINT16 WINAPI GetNumTasks16(void)
|
|
{
|
|
return nTaskCount;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GetTaskDS (KERNEL.155)
|
|
*
|
|
* Note: this function apparently returns a DWORD with LOWORD == HIWORD.
|
|
* I don't think we need to bother with this.
|
|
*/
|
|
HINSTANCE16 WINAPI GetTaskDS16(void)
|
|
{
|
|
TDB *pTask;
|
|
|
|
if (!(pTask = TASK_GetCurrent())) return 0;
|
|
return GlobalHandleToSel16(pTask->hInstance);
|
|
}
|
|
|
|
/***********************************************************************
|
|
* GetDummyModuleHandleDS (KERNEL.602)
|
|
*/
|
|
WORD WINAPI GetDummyModuleHandleDS16(void)
|
|
{
|
|
TDB *pTask;
|
|
WORD selector;
|
|
|
|
if (!(pTask = TASK_GetCurrent())) return 0;
|
|
if (!(pTask->flags & TDBF_WIN32)) return 0;
|
|
selector = GlobalHandleToSel16( pTask->hModule );
|
|
CURRENT_DS = selector;
|
|
return selector;
|
|
}
|
|
|
|
/***********************************************************************
|
|
* IsTask (KERNEL.320)
|
|
*/
|
|
BOOL16 WINAPI IsTask16( HTASK16 hTask )
|
|
{
|
|
TDB *pTask;
|
|
|
|
if (!(pTask = TASK_GetPtr( hTask ))) return FALSE;
|
|
if (GlobalSize16( hTask ) < sizeof(TDB)) return FALSE;
|
|
return (pTask->magic == TDB_MAGIC);
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* IsWinOldApTask (KERNEL.158)
|
|
*/
|
|
BOOL16 WINAPI IsWinOldApTask16( HTASK16 hTask )
|
|
{
|
|
/* should return bit 0 of byte 0x48 in PSP */
|
|
return FALSE;
|
|
}
|
|
|
|
/***********************************************************************
|
|
* SetTaskSignalProc (KERNEL.38)
|
|
*/
|
|
FARPROC16 WINAPI SetTaskSignalProc( HTASK16 hTask, FARPROC16 proc )
|
|
{
|
|
TDB *pTask;
|
|
FARPROC16 oldProc;
|
|
|
|
if (!hTask) hTask = GetCurrentTask();
|
|
if (!(pTask = TASK_GetPtr( hTask ))) return NULL;
|
|
oldProc = pTask->userhandler;
|
|
pTask->userhandler = proc;
|
|
return oldProc;
|
|
}
|
|
|
|
/***********************************************************************
|
|
* SetSigHandler (KERNEL.140)
|
|
*/
|
|
WORD WINAPI SetSigHandler16( FARPROC16 newhandler, FARPROC16* oldhandler,
|
|
UINT16 *oldmode, UINT16 newmode, UINT16 flag )
|
|
{
|
|
FIXME("(%p,%p,%p,%d,%d), unimplemented.\n",
|
|
newhandler,oldhandler,oldmode,newmode,flag );
|
|
|
|
if (flag != 1) return 0;
|
|
if (!newmode) newhandler = NULL; /* Default handler */
|
|
if (newmode != 4)
|
|
{
|
|
TDB *pTask;
|
|
|
|
if (!(pTask = TASK_GetCurrent())) return 0;
|
|
if (oldmode) *oldmode = pTask->signal_flags;
|
|
pTask->signal_flags = newmode;
|
|
if (oldhandler) *oldhandler = pTask->sighandler;
|
|
pTask->sighandler = newhandler;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GlobalNotify (KERNEL.154)
|
|
*
|
|
* Note that GlobalNotify does _not_ return the old NotifyProc
|
|
* -- contrary to LocalNotify !!
|
|
*/
|
|
VOID WINAPI GlobalNotify16( FARPROC16 proc )
|
|
{
|
|
TDB *pTask;
|
|
|
|
if (!(pTask = TASK_GetCurrent())) return;
|
|
pTask->discardhandler = proc;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GetExePtrHelper
|
|
*/
|
|
static inline HMODULE16 GetExePtrHelper( HANDLE16 handle, HTASK16 *hTask )
|
|
{
|
|
char *ptr;
|
|
HANDLE16 owner;
|
|
|
|
/* Check for module handle */
|
|
|
|
if (!(ptr = GlobalLock16( handle ))) return 0;
|
|
if (((NE_MODULE *)ptr)->ne_magic == IMAGE_OS2_SIGNATURE) return handle;
|
|
|
|
/* Search for this handle inside all tasks */
|
|
|
|
*hTask = hFirstTask;
|
|
while (*hTask)
|
|
{
|
|
TDB *pTask = TASK_GetPtr( *hTask );
|
|
if ((*hTask == handle) ||
|
|
(pTask->hInstance == handle) ||
|
|
(pTask->hQueue == handle) ||
|
|
(pTask->hPDB == handle)) return pTask->hModule;
|
|
*hTask = pTask->hNext;
|
|
}
|
|
|
|
/* Check the owner for module handle */
|
|
|
|
owner = FarGetOwner16( handle );
|
|
if (!(ptr = GlobalLock16( owner ))) return 0;
|
|
if (((NE_MODULE *)ptr)->ne_magic == IMAGE_OS2_SIGNATURE) return owner;
|
|
|
|
/* Search for the owner inside all tasks */
|
|
|
|
*hTask = hFirstTask;
|
|
while (*hTask)
|
|
{
|
|
TDB *pTask = TASK_GetPtr( *hTask );
|
|
if ((*hTask == owner) ||
|
|
(pTask->hInstance == owner) ||
|
|
(pTask->hQueue == owner) ||
|
|
(pTask->hPDB == owner)) return pTask->hModule;
|
|
*hTask = pTask->hNext;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/***********************************************************************
|
|
* GetExePtr (KERNEL.133)
|
|
*/
|
|
HMODULE16 WINAPI WIN16_GetExePtr( HANDLE16 handle )
|
|
{
|
|
HTASK16 hTask = 0;
|
|
HMODULE16 hModule = GetExePtrHelper( handle, &hTask );
|
|
STACK16FRAME *frame = CURRENT_STACK16;
|
|
frame->ecx = hModule;
|
|
if (hTask) frame->es = hTask;
|
|
return hModule;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* K228 (KERNEL.228)
|
|
*/
|
|
HMODULE16 WINAPI GetExePtr( HANDLE16 handle )
|
|
{
|
|
HTASK16 hTask = 0;
|
|
return GetExePtrHelper( handle, &hTask );
|
|
}
|
|
|
|
|
|
typedef INT (WINAPI *MessageBoxA_funcptr)(HWND hWnd, LPCSTR text, LPCSTR title, UINT type);
|
|
|
|
/**************************************************************************
|
|
* FatalAppExit (KERNEL.137)
|
|
*/
|
|
void WINAPI FatalAppExit16( UINT16 action, LPCSTR str )
|
|
{
|
|
TDB *pTask = TASK_GetCurrent();
|
|
|
|
if (!pTask || !(pTask->error_mode & SEM_NOGPFAULTERRORBOX))
|
|
{
|
|
HMODULE mod = GetModuleHandleA( "user32.dll" );
|
|
if (mod)
|
|
{
|
|
MessageBoxA_funcptr pMessageBoxA = (MessageBoxA_funcptr)GetProcAddress( mod, "MessageBoxA" );
|
|
if (pMessageBoxA)
|
|
{
|
|
pMessageBoxA( 0, str, NULL, MB_SYSTEMMODAL | MB_OK );
|
|
goto done;
|
|
}
|
|
}
|
|
ERR( "%s\n", debugstr_a(str) );
|
|
}
|
|
done:
|
|
ExitThread(0xff);
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GetAppCompatFlags (KERNEL.354)
|
|
*/
|
|
DWORD WINAPI GetAppCompatFlags16( HTASK16 hTask )
|
|
{
|
|
TDB *pTask;
|
|
|
|
if (!hTask) hTask = GetCurrentTask();
|
|
if (!(pTask=TASK_GetPtr( hTask ))) return 0;
|
|
if (GlobalSize16(hTask) < sizeof(TDB)) return 0;
|
|
return pTask->compat_flags;
|
|
}
|
|
|
|
|
|
/***********************************************************************
|
|
* GetDOSEnvironment (KERNEL.131)
|
|
*
|
|
* Note: the environment is allocated once, it doesn't track changes
|
|
* made using the Win32 API. This shouldn't matter.
|
|
*
|
|
* Format of a 16-bit environment block:
|
|
* ASCIIZ string 1 (xx=yy format)
|
|
* ...
|
|
* ASCIIZ string n
|
|
* BYTE 0
|
|
* WORD 1
|
|
* ASCIIZ program name (e.g. C:\WINDOWS\SYSTEM\KRNL386.EXE)
|
|
*/
|
|
SEGPTR WINAPI GetDOSEnvironment16(void)
|
|
{
|
|
static const char ENV_program_name[] = "C:\\WINDOWS\\SYSTEM\\KRNL386.EXE";
|
|
static HGLOBAL16 handle; /* handle to the 16 bit environment */
|
|
|
|
if (!handle)
|
|
{
|
|
DWORD size;
|
|
LPSTR p, env;
|
|
|
|
p = env = GetEnvironmentStringsA();
|
|
while (*p) p += strlen(p) + 1;
|
|
p++; /* skip last null */
|
|
size = (p - env) + sizeof(WORD) + sizeof(ENV_program_name);
|
|
handle = GlobalAlloc16( GMEM_FIXED, size );
|
|
if (handle)
|
|
{
|
|
WORD one = 1;
|
|
LPSTR env16 = GlobalLock16( handle );
|
|
memcpy( env16, env, p - env );
|
|
memcpy( env16 + (p - env), &one, sizeof(one));
|
|
memcpy( env16 + (p - env) + sizeof(WORD), ENV_program_name, sizeof(ENV_program_name));
|
|
GlobalUnlock16( handle );
|
|
}
|
|
FreeEnvironmentStringsA( env );
|
|
}
|
|
return WOWGlobalLock16( handle );
|
|
}
|