dlls/kernel/kernel16_private.h

   1 /*
   2  * Kernel 16-bit private definitions
   3  *
   4  * Copyright 1995 Alexandre Julliard
   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_KERNEL16_PRIVATE_H
  22 #define __WINE_KERNEL16_PRIVATE_H
  23
  24 #include "wine/winbase16.h"
  25 #include "winreg.h"
  26 #include "winternl.h"
  27 #include "module.h"
  28
  29 #include "pshpack1.h"
  30
  31 /* this structure is always located at offset 0 of the DGROUP segment */
  32 typedef struct
  33 {
  34     WORD null;        /* Always 0 */
  35     DWORD old_ss_sp;  /* Stack pointer; used by SwitchTaskTo() */
  36     WORD heap;        /* Pointer to the local heap information (if any) */
  37     WORD atomtable;   /* Pointer to the local atom table (if any) */
  38     WORD stacktop;    /* Top of the stack */
  39     WORD stackmin;    /* Lowest stack address used so far */
  40     WORD stackbottom; /* Bottom of the stack */
  41 } INSTANCEDATA;
  42
  43 /* THHOOK Kernel Data Structure */
  44 typedef struct _THHOOK
  45 {
  46     HANDLE16   hGlobalHeap;         /* 00 (handle BURGERMASTER) */
  47     WORD       pGlobalHeap;         /* 02 (selector BURGERMASTER) */
  48     HMODULE16  hExeHead;            /* 04 hFirstModule */
  49     HMODULE16  hExeSweep;           /* 06 (unused) */
  50     HANDLE16   TopPDB;              /* 08 (handle of KERNEL PDB) */
  51     HANDLE16   HeadPDB;             /* 0A (first PDB in list) */
  52     HANDLE16   TopSizePDB;          /* 0C (unused) */
  53     HTASK16    HeadTDB;             /* 0E hFirstTask */
  54     HTASK16    CurTDB;              /* 10 hCurrentTask */
  55     HTASK16    LoadTDB;             /* 12 (unused) */
  56     HTASK16    LockTDB;             /* 14 hLockedTask */
  57 } THHOOK;
  58
  59 extern THHOOK *pThhook;
  60
  61 #include "poppack.h"
  62
  63 #define NE_SEG_TABLE(pModule) \
  64     ((SEGTABLEENTRY *)((char *)(pModule) + (pModule)->seg_table))
  65
  66 #define NE_MODULE_NAME(pModule) \
  67     (((OFSTRUCT *)((char*)(pModule) + (pModule)->fileinfo))->szPathName)
  68
  69 #define CURRENT_STACK16 ((STACK16FRAME*)MapSL((SEGPTR)NtCurrentTeb()->WOW32Reserved))
  70 #define CURRENT_DS      (CURRENT_STACK16->ds)
  71
  72 /* push bytes on the 16-bit stack of a thread; return a segptr to the first pushed byte */
  73 static inline SEGPTR stack16_push( int size )
  74 {
  75     STACK16FRAME *frame = CURRENT_STACK16;
  76     memmove( (char*)frame - size, frame, sizeof(*frame) );
  77     NtCurrentTeb()->WOW32Reserved = (char *)NtCurrentTeb()->WOW32Reserved - size;
  78     return (SEGPTR)((char *)NtCurrentTeb()->WOW32Reserved + sizeof(*frame));
  79 }
  80
  81 /* pop bytes from the 16-bit stack of a thread */
  82 static inline void stack16_pop( int size )
  83 {
  84     STACK16FRAME *frame = CURRENT_STACK16;
  85     memmove( (char*)frame + size, frame, sizeof(*frame) );
  86     NtCurrentTeb()->WOW32Reserved = (char *)NtCurrentTeb()->WOW32Reserved + size;
  87 }
  88
  89 /* ne_module.c */
  90 extern NE_MODULE *NE_GetPtr( HMODULE16 hModule );
  91 extern WORD NE_GetOrdinal( HMODULE16 hModule, const char *name );
  92 extern FARPROC16 WINAPI NE_GetEntryPoint( HMODULE16 hModule, WORD ordinal );
  93 extern FARPROC16 NE_GetEntryPointEx( HMODULE16 hModule, WORD ordinal, BOOL16 snoop );
  94 extern BOOL16 NE_SetEntryPoint( HMODULE16 hModule, WORD ordinal, WORD offset );
  95 extern HANDLE NE_OpenFile( NE_MODULE *pModule );
  96 extern DWORD NE_StartTask(void);
  97
  98 /* ne_segment.c */
  99 extern BOOL NE_LoadSegment( NE_MODULE *pModule, WORD segnum );
 100 extern BOOL NE_LoadAllSegments( NE_MODULE *pModule );
 101 extern BOOL NE_CreateSegment( NE_MODULE *pModule, int segnum );
 102 extern BOOL NE_CreateAllSegments( NE_MODULE *pModule );
 103 extern HINSTANCE16 NE_GetInstance( NE_MODULE *pModule );
 104 extern void NE_InitializeDLLs( HMODULE16 hModule );
 105 extern void NE_DllProcessAttach( HMODULE16 hModule );
 106 extern void NE_CallUserSignalProc( HMODULE16 hModule, UINT16 code );
 107
 108 /* selector.c */
 109 extern WORD SELECTOR_AllocBlock( const void *base, DWORD size, unsigned char flags );
 110 extern WORD SELECTOR_ReallocBlock( WORD sel, const void *base, DWORD size );
 111 extern void SELECTOR_FreeBlock( WORD sel );
 112 #define IS_SELECTOR_32BIT(sel) \
 113    (wine_ldt_is_system(sel) || (wine_ldt_copy.flags[LOWORD(sel) >> 3] & WINE_LDT_FLAGS_32BIT))
 114
 115 /* task.c */
 116 extern void TASK_CreateMainTask(void);
 117 extern HTASK16 TASK_SpawnTask( NE_MODULE *pModule, WORD cmdShow,
 118                                LPCSTR cmdline, BYTE len, HANDLE *hThread );
 119 extern void TASK_ExitTask(void);
 120 extern HTASK16 TASK_GetTaskFromThread( DWORD thread );
 121 extern TDB *TASK_GetCurrent(void);
 122 extern void TASK_InstallTHHook( THHOOK *pNewThook );
 123
 124 #endif  /* __WINE_KERNEL16_PRIVATE_H */