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 #include <sys/stat.h>
  27 #include <signal.h>
  28
  29 #include "winbase.h"
  30 #include "wincon.h"
  31 #include "ntddk.h"
  32
  33 #include "wine/winbase16.h"
  34 #include "wine/library.h"
  35 #include "file.h"
  36 #include "global.h"
  37 #include "miscemu.h"
  38 #include "module.h"
  39 #include "task.h"
  40
  41 extern void CODEPAGE_Init(void);
  42 extern BOOL RELAY_Init(void);
  43
  44 extern  int __wine_set_signal_handler(unsigned, int (*)(unsigned));
  45 extern  int CONSOLE_HandleCtrlC(unsigned);
  46
  47 extern int main_create_flags;
  48
  49 /***********************************************************************
  50  *           KERNEL process initialisation routine
  51  */
  52 static BOOL process_attach(void)
  53 {
  54     HMODULE16 hModule;
  55
  56     /* Get the umask */
  57     FILE_umask = umask(0777);
  58     umask( FILE_umask );
  59
  60     /* Setup codepage info */
  61     CODEPAGE_Init();
  62
  63     /* Initialize relay entry points */
  64     if (!RELAY_Init()) return FALSE;
  65
  66     /* Initialize DOS memory */
  67     if (!DOSMEM_Init(0)) return FALSE;
  68
  69     if ((hModule = LoadLibrary16( "krnl386.exe" )) < 32) return FALSE;
  70
  71     /* Initialize special KERNEL entry points */
  72
  73     /* Initialize KERNEL.178 (__WINFLAGS) with the correct flags value */
  74     NE_SetEntryPoint( hModule, 178, GetWinFlags16() );
  75
  76     /* Initialize KERNEL.454/455 (__FLATCS/__FLATDS) */
  77     NE_SetEntryPoint( hModule, 454, wine_get_cs() );
  78     NE_SetEntryPoint( hModule, 455, wine_get_ds() );
  79
  80     /* Initialize KERNEL.THHOOK */
  81     TASK_InstallTHHook(MapSL((SEGPTR)GetProcAddress16( hModule, (LPCSTR)332 )));
  82
  83     /* Initialize the real-mode selector entry points */
  84 #define SET_ENTRY_POINT( num, addr ) \
  85     NE_SetEntryPoint( hModule, (num), GLOBAL_CreateBlock( GMEM_FIXED, \
  86                       DOSMEM_MapDosToLinear(addr), 0x10000, hModule, \
  87                       WINE_LDT_FLAGS_DATA ))
  88
  89     SET_ENTRY_POINT( 174, 0xa0000 );  /* KERNEL.174: __A000H */
  90     SET_ENTRY_POINT( 181, 0xb0000 );  /* KERNEL.181: __B000H */
  91     SET_ENTRY_POINT( 182, 0xb8000 );  /* KERNEL.182: __B800H */
  92     SET_ENTRY_POINT( 195, 0xc0000 );  /* KERNEL.195: __C000H */
  93     SET_ENTRY_POINT( 179, 0xd0000 );  /* KERNEL.179: __D000H */
  94     SET_ENTRY_POINT( 190, 0xe0000 );  /* KERNEL.190: __E000H */
  95     NE_SetEntryPoint( hModule, 183, DOSMEM_0000H );       /* KERNEL.183: __0000H */
  96     NE_SetEntryPoint( hModule, 173, DOSMEM_BiosSysSeg );  /* KERNEL.173: __ROMBIOS */
  97     NE_SetEntryPoint( hModule, 193, DOSMEM_BiosDataSeg ); /* KERNEL.193: __0040H */
  98     NE_SetEntryPoint( hModule, 194, DOSMEM_BiosSysSeg );  /* KERNEL.194: __F000H */
  99 #undef SET_ENTRY_POINT
 100
 101     /* Force loading of some dlls */
 102     if (LoadLibrary16( "system" ) < 32) return FALSE;
 103
 104     /* Create 16-bit task */
 105     TASK_CreateMainTask();
 106
 107     /* Create the shared heap for broken win95 native dlls */
 108     HeapCreate( HEAP_SHARED, 0, 0 );
 109
 110     /* finish the process initialisation, if needed */
 111     __wine_set_signal_handler(SIGINT, CONSOLE_HandleCtrlC);
 112
 113     if (main_create_flags & CREATE_NEW_CONSOLE)
 114     {
 115         HMODULE mod = GetModuleHandleA(0);
 116         if (RtlImageNtHeader(mod)->OptionalHeader.Subsystem == IMAGE_SUBSYSTEM_WINDOWS_CUI)
 117             AllocConsole();
 118     }
 119
 120     return TRUE;
 121 }
 122
 123 /***********************************************************************
 124  *           KERNEL initialisation routine
 125  */
 126 BOOL WINAPI MAIN_KernelInit( HINSTANCE hinst, DWORD reason, LPVOID reserved )
 127 {
 128     switch(reason)
 129     {
 130     case DLL_PROCESS_ATTACH:
 131         return process_attach();
 132     case DLL_PROCESS_DETACH:
 133         WriteOutProfiles16();
 134         break;
 135     }
 136     return TRUE;
 137 }
 138
 139 /***********************************************************************
 140  *              EnableDos (KERNEL.41)
 141  *              DisableDos (KERNEL.42)
 142  *              GetLastDiskChange (KERNEL.98)
 143  *              ValidateCodeSegments (KERNEL.100)
 144  *              KbdRst (KERNEL.123)
 145  *              EnableKernel (KERNEL.124)
 146  *              DisableKernel (KERNEL.125)
 147  *              ValidateFreeSpaces (KERNEL.200)
 148  *              K237 (KERNEL.237)
 149  *              BUNNY_351 (KERNEL.351)
 150  *              PIGLET_361 (KERNEL.361)
 151  *
 152  * Entry point for kernel functions that do nothing.
 153  */
 154 LONG WINAPI KERNEL_nop(void)
 155 {
 156     return 0;
 157 }