dlls/kernel/kernel_main.c

   1 /*
   2  * Kernel initialization code
   3  *
   4  * Copyright 2000 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 #include "config.h"
  22
  23 #include <assert.h>
  24 #include <ctype.h>
  25 #include <string.h>
  26
  27 #include "winbase.h"
  28
  29 #include "wine/winbase16.h"
  30 #include "global.h"
  31 #include "miscemu.h"
  32 #include "module.h"
  33 #include "task.h"
  34
  35 extern void CODEPAGE_Init(void);
  36 extern BOOL RELAY_Init(void);
  37
  38
  39 /***********************************************************************
  40  *           KERNEL process initialisation routine
  41  */
  42 static BOOL process_attach(void)
  43 {
  44     HMODULE16 hModule;
  45
  46     /* Setup codepage info */
  47     CODEPAGE_Init();
  48
  49     /* Initialize relay entry points */
  50     if (!RELAY_Init()) return FALSE;
  51
  52     /* Initialize DOS memory */
  53     if (!DOSMEM_Init(0)) return FALSE;
  54
  55     if ((hModule = LoadLibrary16( "krnl386.exe" )) < 32) return FALSE;
  56
  57     /* Initialize special KERNEL entry points */
  58
  59     /* Initialize KERNEL.178 (__WINFLAGS) with the correct flags value */
  60     NE_SetEntryPoint( hModule, 178, GetWinFlags16() );
  61
  62     /* Initialize KERNEL.454/455 (__FLATCS/__FLATDS) */
  63     NE_SetEntryPoint( hModule, 454, __get_cs() );
  64     NE_SetEntryPoint( hModule, 455, __get_ds() );
  65
  66     /* Initialize KERNEL.THHOOK */
  67     TASK_InstallTHHook(MapSL((SEGPTR)GetProcAddress16( hModule, (LPCSTR)332 )));
  68
  69     /* Initialize the real-mode selector entry points */
  70 #define SET_ENTRY_POINT( num, addr ) \
  71     NE_SetEntryPoint( hModule, (num), GLOBAL_CreateBlock( GMEM_FIXED, \
  72                       DOSMEM_MapDosToLinear(addr), 0x10000, hModule, \
  73                       WINE_LDT_FLAGS_DATA ))
  74
  75     SET_ENTRY_POINT( 174, 0xa0000 );  /* KERNEL.174: __A000H */
  76     SET_ENTRY_POINT( 181, 0xb0000 );  /* KERNEL.181: __B000H */
  77     SET_ENTRY_POINT( 182, 0xb8000 );  /* KERNEL.182: __B800H */
  78     SET_ENTRY_POINT( 195, 0xc0000 );  /* KERNEL.195: __C000H */
  79     SET_ENTRY_POINT( 179, 0xd0000 );  /* KERNEL.179: __D000H */
  80     SET_ENTRY_POINT( 190, 0xe0000 );  /* KERNEL.190: __E000H */
  81     NE_SetEntryPoint( hModule, 183, DOSMEM_0000H );       /* KERNEL.183: __0000H */
  82     NE_SetEntryPoint( hModule, 173, DOSMEM_BiosSysSeg );  /* KERNEL.173: __ROMBIOS */
  83     NE_SetEntryPoint( hModule, 193, DOSMEM_BiosDataSeg ); /* KERNEL.193: __0040H */
  84     NE_SetEntryPoint( hModule, 194, DOSMEM_BiosSysSeg );  /* KERNEL.194: __F000H */
  85 #undef SET_ENTRY_POINT
  86
  87     /* Force loading of some dlls */
  88     if (LoadLibrary16( "system" ) < 32) return FALSE;
  89
  90     /* Create 16-bit task */
  91     TASK_CreateMainTask();
  92
  93     /* Create the shared heap for broken win95 native dlls */
  94     HeapCreate( HEAP_SHARED, 0, 0 );
  95
  96     return TRUE;
  97 }
  98
  99 /***********************************************************************
 100  *           KERNEL initialisation routine
 101  */
 102 BOOL WINAPI MAIN_KernelInit( HINSTANCE hinst, DWORD reason, LPVOID reserved )
 103 {
 104     switch(reason)
 105     {
 106     case DLL_PROCESS_ATTACH:
 107         return process_attach();
 108     case DLL_PROCESS_DETACH:
 109         WriteOutProfiles16();
 110         break;
 111     }
 112     return TRUE;
 113 }
 114
 115 /***********************************************************************
 116  *              EnableDos (KERNEL.41)
 117  *              DisableDos (KERNEL.42)
 118  *              GetLastDiskChange (KERNEL.98)
 119  *              ValidateCodeSegments (KERNEL.100)
 120  *              KbdRst (KERNEL.123)
 121  *              EnableKernel (KERNEL.124)
 122  *              DisableKernel (KERNEL.125)
 123  *              ValidateFreeSpaces (KERNEL.200)
 124  *              K237 (KERNEL.237)
 125  *              BUNNY_351 (KERNEL.351)
 126  *              PIGLET_361 (KERNEL.361)
 127  *
 128  * Entry point for kernel functions that do nothing.
 129  */
 130 LONG WINAPI KERNEL_nop(void)
 131 {
 132     return 0;
 133 }