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