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 #include "wine/port.h"
  23
  24 #include <assert.h>
  25 #include <ctype.h>
  26 #include <string.h>
  27 #include <sys/stat.h>
  28 #include <signal.h>
  29
  30 #include "winbase.h"
  31 #include "wincon.h"
  32 #include "winternl.h"
  33
  34 #include "wine/winbase16.h"
  35 #include "wine/library.h"
  36 #include "file.h"
  37 #include "global.h"
  38 #include "miscemu.h"
  39 #include "module.h"
  40 #include "task.h"
  41 #include "wincon.h"
  42 #include "console_private.h"
  43
  44 extern void LOCALE_Init(void);
  45 extern BOOL RELAY_Init(void);
  46 extern void COMPUTERNAME_Init(void);
  47
  48 extern  int __wine_set_signal_handler(unsigned, int (*)(unsigned));
  49
  50 extern int main_create_flags;
  51
  52 /***********************************************************************
  53  *           KERNEL process initialisation routine
  54  */
  55 static BOOL process_attach(void)
  56 {
  57     HMODULE16 hModule;
  58
  59     /* Get the umask */
  60     FILE_umask = umask(0777);
  61     umask( FILE_umask );
  62
  63     /* Setup codepage info */
  64     LOCALE_Init();
  65
  66     /* Initialize relay entry points */
  67     if (!RELAY_Init()) return FALSE;
  68
  69     /* Initialize DOS memory */
  70     if (!DOSMEM_Init(0)) return FALSE;
  71
  72     /* Setup computer name */
  73     COMPUTERNAME_Init();
  74
  75     if ((hModule = LoadLibrary16( "krnl386.exe" )) >= 32)
  76     {
  77         /* Initialize special KERNEL entry points */
  78
  79         /* Initialize KERNEL.178 (__WINFLAGS) with the correct flags value */
  80         NE_SetEntryPoint( hModule, 178, GetWinFlags16() );
  81
  82         /* Initialize KERNEL.454/455 (__FLATCS/__FLATDS) */
  83         NE_SetEntryPoint( hModule, 454, wine_get_cs() );
  84         NE_SetEntryPoint( hModule, 455, wine_get_ds() );
  85
  86         /* Initialize KERNEL.THHOOK */
  87         TASK_InstallTHHook(MapSL((SEGPTR)GetProcAddress16( hModule, (LPCSTR)332 )));
  88
  89         /* Initialize the real-mode selector entry points */
  90 #define SET_ENTRY_POINT( num, addr ) \
  91     NE_SetEntryPoint( hModule, (num), GLOBAL_CreateBlock( GMEM_FIXED, \
  92                       DOSMEM_MapDosToLinear(addr), 0x10000, hModule, \
  93                       WINE_LDT_FLAGS_DATA ))
  94
  95         SET_ENTRY_POINT( 174, 0xa0000 );  /* KERNEL.174: __A000H */
  96         SET_ENTRY_POINT( 181, 0xb0000 );  /* KERNEL.181: __B000H */
  97         SET_ENTRY_POINT( 182, 0xb8000 );  /* KERNEL.182: __B800H */
  98         SET_ENTRY_POINT( 195, 0xc0000 );  /* KERNEL.195: __C000H */
  99         SET_ENTRY_POINT( 179, 0xd0000 );  /* KERNEL.179: __D000H */
 100         SET_ENTRY_POINT( 190, 0xe0000 );  /* KERNEL.190: __E000H */
 101         NE_SetEntryPoint( hModule, 183, DOSMEM_0000H );       /* KERNEL.183: __0000H */
 102         NE_SetEntryPoint( hModule, 173, DOSMEM_BiosSysSeg );  /* KERNEL.173: __ROMBIOS */
 103         NE_SetEntryPoint( hModule, 193, DOSMEM_BiosDataSeg ); /* KERNEL.193: __0040H */
 104         NE_SetEntryPoint( hModule, 194, DOSMEM_BiosSysSeg );  /* KERNEL.194: __F000H */
 105 #undef SET_ENTRY_POINT
 106     }
 107
 108     /* Force loading of some dlls */
 109     LoadLibrary16( "system" );
 110
 111     /* Create 16-bit task */
 112     TASK_CreateMainTask();
 113
 114     /* Create the shared heap for broken win95 native dlls */
 115     HeapCreate( HEAP_SHARED, 0, 0 );
 116
 117     /* finish the process initialisation for console bits, if needed */
 118     __wine_set_signal_handler(SIGINT, CONSOLE_HandleCtrlC);
 119
 120     if (main_create_flags & CREATE_NEW_CONSOLE)
 121     {
 122         HMODULE mod = GetModuleHandleA(0);
 123         if (RtlImageNtHeader(mod)->OptionalHeader.Subsystem == IMAGE_SUBSYSTEM_WINDOWS_CUI)
 124             AllocConsole();
 125     }
 126     if (main_create_flags & CREATE_NEW_PROCESS_GROUP)
 127         SetConsoleCtrlHandler(NULL, TRUE);
 128
 129     return TRUE;
 130 }
 131
 132 /***********************************************************************
 133  *           KERNEL initialisation routine
 134  */
 135 BOOL WINAPI MAIN_KernelInit( HINSTANCE hinst, DWORD reason, LPVOID reserved )
 136 {
 137     switch(reason)
 138     {
 139     case DLL_PROCESS_ATTACH:
 140         return process_attach();
 141     case DLL_PROCESS_DETACH:
 142         WriteOutProfiles16();
 143         break;
 144     }
 145     return TRUE;
 146 }
 147
 148 /***********************************************************************
 149  *              EnableDos (KERNEL.41)
 150  *              DisableDos (KERNEL.42)
 151  *              GetLastDiskChange (KERNEL.98)
 152  *              ValidateCodeSegments (KERNEL.100)
 153  *              KbdRst (KERNEL.123)
 154  *              EnableKernel (KERNEL.124)
 155  *              DisableKernel (KERNEL.125)
 156  *              ValidateFreeSpaces (KERNEL.200)
 157  *              K237 (KERNEL.237)
 158  *              BUNNY_351 (KERNEL.351)
 159  *              PIGLET_361 (KERNEL.361)
 160  *
 161  * Entry point for kernel functions that do nothing.
 162  */
 163 LONG WINAPI KERNEL_nop(void)
 164 {
 165     return 0;
 166 }
 167
 168 /***********************************************************************
 169  *              SwitchToThread (KERNEL32.@)
 170  */
 171
 172 BOOL WINAPI SwitchToThread(void)
 173 {
 174     Sleep(0);
 175     return 1;
 176 }