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 static CRITICAL_SECTION ldt_section = CRITICAL_SECTION_INIT("ldt_section");
  53
  54 /***********************************************************************
  55  *           locking for LDT routines
  56  */
  57 static void ldt_lock(void)
  58 {
  59     EnterCriticalSection( &ldt_section );
  60 }
  61
  62 static void ldt_unlock(void)
  63 {
  64     LeaveCriticalSection( &ldt_section );
  65 }
  66
  67 /***********************************************************************
  68  *           KERNEL process initialisation routine
  69  */
  70 static BOOL process_attach(void)
  71 {
  72     HMODULE16 hModule;
  73
  74     /* Get the umask */
  75     FILE_umask = umask(0777);
  76     umask( FILE_umask );
  77
  78     /* Setup codepage info */
  79     LOCALE_Init();
  80
  81     /* Initialize relay entry points */
  82     if (!RELAY_Init()) return FALSE;
  83
  84     /* Initialize DOS memory */
  85     if (!DOSMEM_Init(0)) return FALSE;
  86
  87     /* Setup computer name */
  88     COMPUTERNAME_Init();
  89
  90     if ((hModule = LoadLibrary16( "krnl386.exe" )) >= 32)
  91     {
  92         /* Initialize special KERNEL entry points */
  93
  94         /* Initialize KERNEL.178 (__WINFLAGS) with the correct flags value */
  95         NE_SetEntryPoint( hModule, 178, GetWinFlags16() );
  96
  97         /* Initialize KERNEL.454/455 (__FLATCS/__FLATDS) */
  98         NE_SetEntryPoint( hModule, 454, wine_get_cs() );
  99         NE_SetEntryPoint( hModule, 455, wine_get_ds() );
 100
 101         /* Initialize KERNEL.THHOOK */
 102         TASK_InstallTHHook(MapSL((SEGPTR)GetProcAddress16( hModule, (LPCSTR)332 )));
 103
 104         /* Initialize the real-mode selector entry points */
 105 #define SET_ENTRY_POINT( num, addr ) \
 106     NE_SetEntryPoint( hModule, (num), GLOBAL_CreateBlock( GMEM_FIXED, \
 107                       DOSMEM_MapDosToLinear(addr), 0x10000, hModule, \
 108                       WINE_LDT_FLAGS_DATA ))
 109
 110         SET_ENTRY_POINT( 174, 0xa0000 );  /* KERNEL.174: __A000H */
 111         SET_ENTRY_POINT( 181, 0xb0000 );  /* KERNEL.181: __B000H */
 112         SET_ENTRY_POINT( 182, 0xb8000 );  /* KERNEL.182: __B800H */
 113         SET_ENTRY_POINT( 195, 0xc0000 );  /* KERNEL.195: __C000H */
 114         SET_ENTRY_POINT( 179, 0xd0000 );  /* KERNEL.179: __D000H */
 115         SET_ENTRY_POINT( 190, 0xe0000 );  /* KERNEL.190: __E000H */
 116         NE_SetEntryPoint( hModule, 183, DOSMEM_0000H );       /* KERNEL.183: __0000H */
 117         NE_SetEntryPoint( hModule, 173, DOSMEM_BiosSysSeg );  /* KERNEL.173: __ROMBIOS */
 118         NE_SetEntryPoint( hModule, 193, DOSMEM_BiosDataSeg ); /* KERNEL.193: __0040H */
 119         NE_SetEntryPoint( hModule, 194, DOSMEM_BiosSysSeg );  /* KERNEL.194: __F000H */
 120 #undef SET_ENTRY_POINT
 121     }
 122
 123     /* Force loading of some dlls */
 124     LoadLibrary16( "system" );
 125
 126     /* Create 16-bit task */
 127     TASK_CreateMainTask();
 128
 129     /* Create the shared heap for broken win95 native dlls */
 130     HeapCreate( HEAP_SHARED, 0, 0 );
 131
 132     /* initialize LDT locking */
 133     wine_ldt_init_locking( ldt_lock, ldt_unlock );
 134
 135     /* finish the process initialisation for console bits, if needed */
 136     __wine_set_signal_handler(SIGINT, CONSOLE_HandleCtrlC);
 137
 138     if (main_create_flags & CREATE_NEW_CONSOLE)
 139     {
 140         HMODULE mod = GetModuleHandleA(0);
 141         if (RtlImageNtHeader(mod)->OptionalHeader.Subsystem == IMAGE_SUBSYSTEM_WINDOWS_CUI)
 142             AllocConsole();
 143     }
 144     if (main_create_flags & CREATE_NEW_PROCESS_GROUP)
 145         SetConsoleCtrlHandler(NULL, TRUE);
 146
 147     return TRUE;
 148 }
 149
 150 /***********************************************************************
 151  *           KERNEL initialisation routine
 152  */
 153 BOOL WINAPI MAIN_KernelInit( HINSTANCE hinst, DWORD reason, LPVOID reserved )
 154 {
 155     switch(reason)
 156     {
 157     case DLL_PROCESS_ATTACH:
 158         return process_attach();
 159     case DLL_PROCESS_DETACH:
 160         WriteOutProfiles16();
 161         break;
 162     }
 163     return TRUE;
 164 }
 165
 166 /***********************************************************************
 167  *              EnableDos (KERNEL.41)
 168  *              DisableDos (KERNEL.42)
 169  *              GetLastDiskChange (KERNEL.98)
 170  *              ValidateCodeSegments (KERNEL.100)
 171  *              KbdRst (KERNEL.123)
 172  *              EnableKernel (KERNEL.124)
 173  *              DisableKernel (KERNEL.125)
 174  *              ValidateFreeSpaces (KERNEL.200)
 175  *              K237 (KERNEL.237)
 176  *              BUNNY_351 (KERNEL.351)
 177  *              PIGLET_361 (KERNEL.361)
 178  *
 179  * Entry point for kernel functions that do nothing.
 180  */
 181 LONG WINAPI KERNEL_nop(void)
 182 {
 183     return 0;
 184 }
 185
 186 /***********************************************************************
 187  *              SwitchToThread (KERNEL32.@)
 188  */
 189
 190 BOOL WINAPI SwitchToThread(void)
 191 {
 192     Sleep(0);
 193     return 1;
 194 }