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 #ifdef HAVE_SYS_STAT_H
  29 # include <sys/stat.h>
  30 #endif
  31 #include <time.h>
  32 #ifdef HAVE_SYS_TIME_H
  33 # include <sys/time.h>
  34 #endif
  35 #include <signal.h>
  36
  37 #include "windef.h"
  38 #include "winbase.h"
  39 #include "wincon.h"
  40 #include "winternl.h"
  41 #include "wownt32.h"
  42
  43 #include "wine/winbase16.h"
  44 #include "wine/library.h"
  45 #include "wincon.h"
  46 #include "toolhelp.h"
  47 #include "kernel_private.h"
  48 #include "kernel16_private.h"
  49 #include "console_private.h"
  50
  51 extern  int __wine_set_signal_handler(unsigned, int (*)(unsigned));
  52
  53 extern int main_create_flags;
  54
  55 static CRITICAL_SECTION ldt_section;
  56 static CRITICAL_SECTION_DEBUG critsect_debug =
  57 {
  58     0, 0, &ldt_section,
  59     { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
  60       0, 0, { 0, (DWORD)(__FILE__ ": ldt_section") }
  61 };
  62 static CRITICAL_SECTION ldt_section = { &critsect_debug, -1, 0, 0, 0, 0 };
  63
  64 static DWORD server_start_time;
  65
  66 /***********************************************************************
  67  *           locking for LDT routines
  68  */
  69 static void ldt_lock(void)
  70 {
  71     RtlEnterCriticalSection( &ldt_section );
  72 }
  73
  74 static void ldt_unlock(void)
  75 {
  76     RtlLeaveCriticalSection( &ldt_section );
  77 }
  78
  79
  80 /***********************************************************************
  81  *           KERNEL thread initialisation routine
  82  */
  83 static void thread_attach(void)
  84 {
  85     /* allocate the 16-bit stack (FIXME: should be done lazily) */
  86     HGLOBAL16 hstack = WOWGlobalAlloc16( GMEM_FIXED, 0x10000 );
  87     kernel_get_thread_data()->stack_sel = GlobalHandleToSel16( hstack );
  88     NtCurrentTeb()->WOW32Reserved = (void *)MAKESEGPTR( kernel_get_thread_data()->stack_sel,
  89                                                         0x10000 - sizeof(STACK16FRAME) );
  90 }
  91
  92
  93 /***********************************************************************
  94  *           KERNEL thread finalisation routine
  95  */
  96 static void thread_detach(void)
  97 {
  98     /* free the 16-bit stack */
  99     WOWGlobalFree16( kernel_get_thread_data()->stack_sel );
 100     NtCurrentTeb()->WOW32Reserved = 0;
 101     if (NtCurrentTeb()->Tib.SubSystemTib) TASK_ExitTask();
 102 }
 103
 104
 105 /***********************************************************************
 106  *           KERNEL process initialisation routine
 107  */
 108 static BOOL process_attach(void)
 109 {
 110     HMODULE16 hModule;
 111     SYSTEM_INFO si;
 112     SYSTEM_TIMEOFDAY_INFORMATION sti;
 113
 114     NtQuerySystemInformation( SystemTimeOfDayInformation, &sti, sizeof(sti), NULL );
 115     RtlTimeToSecondsSince1970( &sti.liKeBootTime, &server_start_time );
 116
 117     /* FIXME: should probably be done in ntdll */
 118     GetSystemInfo( &si );
 119     NtCurrentTeb()->Peb->NumberOfProcessors = si.dwNumberOfProcessors;
 120
 121     /* Setup registry locale information */
 122     LOCALE_InitRegistry();
 123
 124     /* Initialize 16-bit thunking entry points */
 125     if (!WOWTHUNK_Init()) return FALSE;
 126
 127     /* Initialize DOS memory */
 128     if (!DOSMEM_Init()) return FALSE;
 129
 130     /* Setup computer name */
 131     COMPUTERNAME_Init();
 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 #ifdef __i386__
 173     /* Create the shared heap for broken win95 native dlls */
 174     if (GetVersion() & 0x80000000) HeapCreate( HEAP_SHARED, 0, 0 );
 175 #endif
 176
 177     /* initialize LDT locking */
 178     wine_ldt_init_locking( ldt_lock, ldt_unlock );
 179
 180     /* finish the process initialisation for console bits, if needed */
 181     __wine_set_signal_handler(SIGINT, CONSOLE_HandleCtrlC);
 182
 183     if (main_create_flags & CREATE_NEW_CONSOLE)
 184     {
 185         HMODULE mod = GetModuleHandleA(0);
 186         if (RtlImageNtHeader(mod)->OptionalHeader.Subsystem == IMAGE_SUBSYSTEM_WINDOWS_CUI)
 187             AllocConsole();
 188     }
 189     else if (!(main_create_flags & DETACHED_PROCESS))
 190     {
 191         /* 1/ shall inherit console + handles
 192          * 2/ shall create std handles, if handles are not inherited
 193          * TBD when not using wineserver handles for console handles
 194          */
 195     }
 196
 197     if (main_create_flags & CREATE_NEW_PROCESS_GROUP)
 198         SetConsoleCtrlHandler(NULL, TRUE);
 199
 200     /* Create 16-bit task */
 201     thread_attach();
 202     TASK_CreateMainTask();
 203     return TRUE;
 204 }
 205
 206 /***********************************************************************
 207  *           KERNEL initialisation routine
 208  */
 209 BOOL WINAPI DllMain( HINSTANCE hinst, DWORD reason, LPVOID reserved )
 210 {
 211     switch(reason)
 212     {
 213     case DLL_PROCESS_ATTACH:
 214         return process_attach();
 215     case DLL_THREAD_ATTACH:
 216         thread_attach();
 217         break;
 218     case DLL_THREAD_DETACH:
 219         thread_detach();
 220         break;
 221     case DLL_PROCESS_DETACH:
 222         WriteOutProfiles16();
 223         break;
 224     }
 225     return TRUE;
 226 }
 227
 228 /***********************************************************************
 229  *              EnableDos (KERNEL.41)
 230  *              DisableDos (KERNEL.42)
 231  *              GetLastDiskChange (KERNEL.98)
 232  *              ValidateCodeSegments (KERNEL.100)
 233  *              KbdRst (KERNEL.123)
 234  *              EnableKernel (KERNEL.124)
 235  *              DisableKernel (KERNEL.125)
 236  *              ValidateFreeSpaces (KERNEL.200)
 237  *              K237 (KERNEL.237)
 238  *              BUNNY_351 (KERNEL.351)
 239  *              PIGLET_361 (KERNEL.361)
 240  *
 241  * Entry point for kernel functions that do nothing.
 242  */
 243 LONG WINAPI KERNEL_nop(void)
 244 {
 245     return 0;
 246 }
 247
 248 /***********************************************************************
 249  *           MulDiv   (KERNEL32.@)
 250  * RETURNS
 251  *      Result of multiplication and division
 252  *      -1: Overflow occurred or Divisor was 0
 253  */
 254 INT WINAPI MulDiv( INT nMultiplicand, INT nMultiplier, INT nDivisor)
 255 {
 256     LONGLONG ret;
 257
 258     if (!nDivisor) return -1;
 259
 260     /* We want to deal with a positive divisor to simplify the logic. */
 261     if (nDivisor < 0)
 262     {
 263       nMultiplicand = - nMultiplicand;
 264       nDivisor = -nDivisor;
 265     }
 266
 267     /* If the result is positive, we "add" to round. else, we subtract to round. */
 268     if ( ( (nMultiplicand <  0) && (nMultiplier <  0) ) ||
 269          ( (nMultiplicand >= 0) && (nMultiplier >= 0) ) )
 270       ret = (((LONGLONG)nMultiplicand * nMultiplier) + (nDivisor/2)) / nDivisor;
 271     else
 272       ret = (((LONGLONG)nMultiplicand * nMultiplier) - (nDivisor/2)) / nDivisor;
 273
 274     if ((ret > 2147483647) || (ret < -2147483647)) return -1;
 275     return ret;
 276 }
 277
 278
 279 /***********************************************************************
 280  *           GetSystemMSecCount (SYSTEM.6)
 281  *           GetTickCount       (KERNEL32.@)
 282  *
 283  * Get the number of milliseconds the system has been running.
 284  *
 285  * PARAMS
 286  *  None.
 287  *
 288  * RETURNS
 289  *  The current tick count.
 290  *
 291  * NOTES
 292  *  -The value returned will wrap arounf every 2^32 milliseconds.
 293  *  -Under Windows, tick 0 is the moment at which the system is rebooted.
 294  *  Under Wine, tick 0 begins at the moment the wineserver process is started,
 295  */
 296 DWORD WINAPI GetTickCount(void)
 297 {
 298     struct timeval t;
 299     gettimeofday( &t, NULL );
 300     return ((t.tv_sec - server_start_time) * 1000) + (t.tv_usec / 1000);
 301 }