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 <stdarg.h>
  27 #include <string.h>
  28 #include <sys/stat.h>
  29 #include <signal.h>
  30
  31 #include "windef.h"
  32 #include "winbase.h"
  33 #include "wincon.h"
  34 #include "winreg.h"
  35 #include "winternl.h"
  36
  37 #include "wine/winbase16.h"
  38 #include "wine/library.h"
  39 #include "file.h"
  40 #include "miscemu.h"
  41 #include "module.h"
  42 #include "thread.h"
  43 #include "stackframe.h"
  44 #include "wincon.h"
  45 #include "toolhelp.h"
  46 #include "kernel_private.h"
  47 #include "console_private.h"
  48
  49 extern void LOCALE_InitRegistry(void);
  50 extern void COMPUTERNAME_Init(void);
  51
  52 extern  int __wine_set_signal_handler(unsigned, int (*)(unsigned));
  53 extern void VOLUME_CreateDevices(void);
  54 /* memory/environ.c */
  55 extern void ENV_CopyStartupInformation(void);
  56
  57 extern int main_create_flags;
  58
  59 static CRITICAL_SECTION ldt_section;
  60 static CRITICAL_SECTION_DEBUG critsect_debug =
  61 {
  62     0, 0, &ldt_section,
  63     { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
  64       0, 0, { 0, (DWORD)(__FILE__ ": ldt_section") }
  65 };
  66 static CRITICAL_SECTION ldt_section = { &critsect_debug, -1, 0, 0, 0, 0 };
  67
  68 /***********************************************************************
  69  *           locking for LDT routines
  70  */
  71 static void ldt_lock(void)
  72 {
  73     RtlEnterCriticalSection( &ldt_section );
  74 }
  75
  76 static void ldt_unlock(void)
  77 {
  78     RtlLeaveCriticalSection( &ldt_section );
  79 }
  80
  81
  82 /***********************************************************************
  83  *           KERNEL thread initialisation routine
  84  */
  85 static void thread_attach(void)
  86 {
  87     /* allocate the 16-bit stack (FIXME: should be done lazily) */
  88     HGLOBAL16 hstack = K32WOWGlobalAlloc16( GMEM_FIXED, 0x10000 );
  89     NtCurrentTeb()->stack_sel = GlobalHandleToSel16( hstack );
  90     NtCurrentTeb()->cur_stack = MAKESEGPTR( NtCurrentTeb()->stack_sel,
  91                                             0x10000 - sizeof(STACK16FRAME) );
  92 }
  93
  94
  95 /***********************************************************************
  96  *           KERNEL thread finalisation routine
  97  */
  98 static void thread_detach(void)
  99 {
 100     /* free the 16-bit stack */
 101     K32WOWGlobalFree16( NtCurrentTeb()->stack_sel );
 102     NtCurrentTeb()->cur_stack = 0;
 103     if (!(NtCurrentTeb()->tibflags & TEBF_WIN32)) TASK_ExitTask();
 104 }
 105
 106
 107 /***********************************************************************
 108  *           KERNEL process initialisation routine
 109  */
 110 static BOOL process_attach(void)
 111 {
 112     HMODULE16 hModule;
 113
 114     /* Get the umask */
 115     FILE_umask = umask(0777);
 116     umask( FILE_umask );
 117
 118     /* Setup registry locale information */
 119     LOCALE_InitRegistry();
 120
 121     /* Initialize 16-bit thunking entry points */
 122     if (!WOWTHUNK_Init()) return FALSE;
 123
 124     /* Initialize DOS memory */
 125     if (!DOSMEM_Init(0)) return FALSE;
 126
 127     /* Setup computer name */
 128     COMPUTERNAME_Init();
 129
 130     /* Create device symlinks */
 131     VOLUME_CreateDevices();
 132
 133     /* copy process information from ntdll */
 134     ENV_CopyStartupInformation();
 135
 136     if ((hModule = LoadLibrary16( "krnl386.exe" )) >= 32)
 137     {
 138         /* Initialize special KERNEL entry points */
 139
 140         /* Initialize KERNEL.178 (__WINFLAGS) with the correct flags value */
 141         NE_SetEntryPoint( hModule, 178, GetWinFlags16() );
 142
 143         /* Initialize KERNEL.454/455 (__FLATCS/__FLATDS) */
 144         NE_SetEntryPoint( hModule, 454, wine_get_cs() );
 145         NE_SetEntryPoint( hModule, 455, wine_get_ds() );
 146
 147         /* Initialize KERNEL.THHOOK */
 148         TASK_InstallTHHook(MapSL((SEGPTR)GetProcAddress16( hModule, (LPCSTR)332 )));
 149
 150         /* Initialize the real-mode selector entry points */
 151 #define SET_ENTRY_POINT( num, addr ) \
 152     NE_SetEntryPoint( hModule, (num), GLOBAL_CreateBlock( GMEM_FIXED, \
 153                       DOSMEM_MapDosToLinear(addr), 0x10000, hModule, \
 154                       WINE_LDT_FLAGS_DATA ))
 155
 156         SET_ENTRY_POINT( 174, 0xa0000 );  /* KERNEL.174: __A000H */
 157         SET_ENTRY_POINT( 181, 0xb0000 );  /* KERNEL.181: __B000H */
 158         SET_ENTRY_POINT( 182, 0xb8000 );  /* KERNEL.182: __B800H */
 159         SET_ENTRY_POINT( 195, 0xc0000 );  /* KERNEL.195: __C000H */
 160         SET_ENTRY_POINT( 179, 0xd0000 );  /* KERNEL.179: __D000H */
 161         SET_ENTRY_POINT( 190, 0xe0000 );  /* KERNEL.190: __E000H */
 162         NE_SetEntryPoint( hModule, 183, DOSMEM_0000H );       /* KERNEL.183: __0000H */
 163         NE_SetEntryPoint( hModule, 173, DOSMEM_BiosSysSeg );  /* KERNEL.173: __ROMBIOS */
 164         NE_SetEntryPoint( hModule, 193, DOSMEM_BiosDataSeg ); /* KERNEL.193: __0040H */
 165         NE_SetEntryPoint( hModule, 194, DOSMEM_BiosSysSeg );  /* KERNEL.194: __F000H */
 166 #undef SET_ENTRY_POINT
 167
 168         /* Force loading of some dlls */
 169         LoadLibrary16( "system.drv" );
 170     }
 171
 172     /* Create the shared heap for broken win95 native dlls */
 173     HeapCreate( HEAP_SHARED, 0, 0 );
 174
 175     /* initialize LDT locking */
 176     wine_ldt_init_locking( ldt_lock, ldt_unlock );
 177
 178     /* finish the process initialisation for console bits, if needed */
 179     __wine_set_signal_handler(SIGINT, CONSOLE_HandleCtrlC);
 180
 181     if (main_create_flags & CREATE_NEW_CONSOLE)
 182     {
 183         HMODULE mod = GetModuleHandleA(0);
 184         if (RtlImageNtHeader(mod)->OptionalHeader.Subsystem == IMAGE_SUBSYSTEM_WINDOWS_CUI)
 185             AllocConsole();
 186     }
 187     else if (!(main_create_flags & DETACHED_PROCESS))
 188     {
 189         /* 1/ shall inherit console + handles
 190          * 2/ shall create std handles, if handles are not inherited
 191          * TBD when not using wineserver handles for console handles
 192          */
 193     }
 194
 195     if (main_create_flags & CREATE_NEW_PROCESS_GROUP)
 196         SetConsoleCtrlHandler(NULL, TRUE);
 197
 198     /* Create 16-bit task */
 199     thread_attach();
 200     TASK_CreateMainTask();
 201     return TRUE;
 202 }
 203
 204 /***********************************************************************
 205  *           KERNEL initialisation routine
 206  */
 207 BOOL WINAPI DllMain( HINSTANCE hinst, DWORD reason, LPVOID reserved )
 208 {
 209     switch(reason)
 210     {
 211     case DLL_PROCESS_ATTACH:
 212         return process_attach();
 213     case DLL_THREAD_ATTACH:
 214         thread_attach();
 215         break;
 216     case DLL_THREAD_DETACH:
 217         thread_detach();
 218         break;
 219     case DLL_PROCESS_DETACH:
 220         WriteOutProfiles16();
 221         break;
 222     }
 223     return TRUE;
 224 }
 225
 226 /***********************************************************************
 227  *              EnableDos (KERNEL.41)
 228  *              DisableDos (KERNEL.42)
 229  *              GetLastDiskChange (KERNEL.98)
 230  *              ValidateCodeSegments (KERNEL.100)
 231  *              KbdRst (KERNEL.123)
 232  *              EnableKernel (KERNEL.124)
 233  *              DisableKernel (KERNEL.125)
 234  *              ValidateFreeSpaces (KERNEL.200)
 235  *              K237 (KERNEL.237)
 236  *              BUNNY_351 (KERNEL.351)
 237  *              PIGLET_361 (KERNEL.361)
 238  *
 239  * Entry point for kernel functions that do nothing.
 240  */
 241 LONG WINAPI KERNEL_nop(void)
 242 {
 243     return 0;
 244 }
 245
 246 /***********************************************************************
 247  *              SwitchToThread (KERNEL32.@)
 248  */
 249
 250 BOOL WINAPI SwitchToThread(void)
 251 {
 252     Sleep(0);
 253     return 1;
 254 }