2 * Kernel initialization code
4 * Copyright 2000 Alexandre Julliard
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.
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.
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
22 #include "wine/port.h"
28 #ifdef HAVE_SYS_STAT_H
29 # include <sys/stat.h>
32 #ifdef HAVE_SYS_TIME_H
33 # include <sys/time.h>
42 #include "wine/winbase16.h"
43 #include "wine/library.h"
46 #include "kernel_private.h"
47 #include "kernel16_private.h"
48 #include "console_private.h"
50 extern int __wine_set_signal_handler(unsigned, int (*)(unsigned));
52 extern int main_create_flags;
54 static CRITICAL_SECTION ldt_section;
55 static CRITICAL_SECTION_DEBUG critsect_debug =
58 { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
59 0, 0, { 0, (DWORD)(__FILE__ ": ldt_section") }
61 static CRITICAL_SECTION ldt_section = { &critsect_debug, -1, 0, 0, 0, 0 };
63 static DWORD server_start_time;
65 /***********************************************************************
66 * locking for LDT routines
68 static void ldt_lock(void)
70 RtlEnterCriticalSection( &ldt_section );
73 static void ldt_unlock(void)
75 RtlLeaveCriticalSection( &ldt_section );
79 /***********************************************************************
80 * KERNEL thread initialisation routine
82 static void thread_attach(void)
84 /* allocate the 16-bit stack (FIXME: should be done lazily) */
85 HGLOBAL16 hstack = K32WOWGlobalAlloc16( GMEM_FIXED, 0x10000 );
86 kernel_get_thread_data()->stack_sel = GlobalHandleToSel16( hstack );
87 NtCurrentTeb()->WOW32Reserved = (void *)MAKESEGPTR( kernel_get_thread_data()->stack_sel,
88 0x10000 - sizeof(STACK16FRAME) );
92 /***********************************************************************
93 * KERNEL thread finalisation routine
95 static void thread_detach(void)
97 /* free the 16-bit stack */
98 K32WOWGlobalFree16( kernel_get_thread_data()->stack_sel );
99 NtCurrentTeb()->WOW32Reserved = 0;
100 if (NtCurrentTeb()->Tib.SubSystemTib) TASK_ExitTask();
104 /***********************************************************************
105 * KERNEL process initialisation routine
107 static BOOL process_attach(void)
111 SYSTEM_TIMEOFDAY_INFORMATION sti;
113 NtQuerySystemInformation( SystemTimeOfDayInformation, &sti, sizeof(sti), NULL );
114 RtlTimeToSecondsSince1970( &sti.liKeBootTime, &server_start_time );
116 /* FIXME: should probably be done in ntdll */
117 GetSystemInfo( &si );
118 NtCurrentTeb()->Peb->NumberOfProcessors = si.dwNumberOfProcessors;
120 /* Setup registry locale information */
121 LOCALE_InitRegistry();
123 /* Initialize 16-bit thunking entry points */
124 if (!WOWTHUNK_Init()) return FALSE;
126 /* Initialize DOS memory */
127 if (!DOSMEM_Init()) return FALSE;
129 /* Setup computer name */
132 /* copy process information from ntdll */
133 ENV_CopyStartupInformation();
135 if ((hModule = LoadLibrary16( "krnl386.exe" )) >= 32)
137 /* Initialize special KERNEL entry points */
139 /* Initialize KERNEL.178 (__WINFLAGS) with the correct flags value */
140 NE_SetEntryPoint( hModule, 178, GetWinFlags16() );
142 /* Initialize KERNEL.454/455 (__FLATCS/__FLATDS) */
143 NE_SetEntryPoint( hModule, 454, wine_get_cs() );
144 NE_SetEntryPoint( hModule, 455, wine_get_ds() );
146 /* Initialize KERNEL.THHOOK */
147 TASK_InstallTHHook(MapSL((SEGPTR)GetProcAddress16( hModule, (LPCSTR)332 )));
149 /* Initialize the real-mode selector entry points */
150 #define SET_ENTRY_POINT( num, addr ) \
151 NE_SetEntryPoint( hModule, (num), GLOBAL_CreateBlock( GMEM_FIXED, \
152 DOSMEM_MapDosToLinear(addr), 0x10000, hModule, \
153 WINE_LDT_FLAGS_DATA ))
155 SET_ENTRY_POINT( 174, 0xa0000 ); /* KERNEL.174: __A000H */
156 SET_ENTRY_POINT( 181, 0xb0000 ); /* KERNEL.181: __B000H */
157 SET_ENTRY_POINT( 182, 0xb8000 ); /* KERNEL.182: __B800H */
158 SET_ENTRY_POINT( 195, 0xc0000 ); /* KERNEL.195: __C000H */
159 SET_ENTRY_POINT( 179, 0xd0000 ); /* KERNEL.179: __D000H */
160 SET_ENTRY_POINT( 190, 0xe0000 ); /* KERNEL.190: __E000H */
161 NE_SetEntryPoint( hModule, 183, DOSMEM_0000H ); /* KERNEL.183: __0000H */
162 NE_SetEntryPoint( hModule, 173, DOSMEM_BiosSysSeg ); /* KERNEL.173: __ROMBIOS */
163 NE_SetEntryPoint( hModule, 193, DOSMEM_BiosDataSeg ); /* KERNEL.193: __0040H */
164 NE_SetEntryPoint( hModule, 194, DOSMEM_BiosSysSeg ); /* KERNEL.194: __F000H */
165 #undef SET_ENTRY_POINT
167 /* Force loading of some dlls */
168 LoadLibrary16( "system.drv" );
172 /* Create the shared heap for broken win95 native dlls */
173 if (GetVersion() & 0x80000000) HeapCreate( HEAP_SHARED, 0, 0 );
176 /* initialize LDT locking */
177 wine_ldt_init_locking( ldt_lock, ldt_unlock );
179 /* finish the process initialisation for console bits, if needed */
180 __wine_set_signal_handler(SIGINT, CONSOLE_HandleCtrlC);
182 if (main_create_flags & CREATE_NEW_CONSOLE)
184 HMODULE mod = GetModuleHandleA(0);
185 if (RtlImageNtHeader(mod)->OptionalHeader.Subsystem == IMAGE_SUBSYSTEM_WINDOWS_CUI)
188 else if (!(main_create_flags & DETACHED_PROCESS))
190 /* 1/ shall inherit console + handles
191 * 2/ shall create std handles, if handles are not inherited
192 * TBD when not using wineserver handles for console handles
196 if (main_create_flags & CREATE_NEW_PROCESS_GROUP)
197 SetConsoleCtrlHandler(NULL, TRUE);
199 /* Create 16-bit task */
201 TASK_CreateMainTask();
205 /***********************************************************************
206 * KERNEL initialisation routine
208 BOOL WINAPI DllMain( HINSTANCE hinst, DWORD reason, LPVOID reserved )
212 case DLL_PROCESS_ATTACH:
213 return process_attach();
214 case DLL_THREAD_ATTACH:
217 case DLL_THREAD_DETACH:
220 case DLL_PROCESS_DETACH:
221 WriteOutProfiles16();
227 /***********************************************************************
228 * EnableDos (KERNEL.41)
229 * DisableDos (KERNEL.42)
230 * GetLastDiskChange (KERNEL.98)
231 * ValidateCodeSegments (KERNEL.100)
232 * KbdRst (KERNEL.123)
233 * EnableKernel (KERNEL.124)
234 * DisableKernel (KERNEL.125)
235 * ValidateFreeSpaces (KERNEL.200)
237 * BUNNY_351 (KERNEL.351)
238 * PIGLET_361 (KERNEL.361)
240 * Entry point for kernel functions that do nothing.
242 LONG WINAPI KERNEL_nop(void)
247 /***********************************************************************
248 * MulDiv (KERNEL32.@)
250 * Result of multiplication and division
251 * -1: Overflow occurred or Divisor was 0
253 INT WINAPI MulDiv( INT nMultiplicand, INT nMultiplier, INT nDivisor)
257 if (!nDivisor) return -1;
259 /* We want to deal with a positive divisor to simplify the logic. */
262 nMultiplicand = - nMultiplicand;
263 nDivisor = -nDivisor;
266 /* If the result is positive, we "add" to round. else, we subtract to round. */
267 if ( ( (nMultiplicand < 0) && (nMultiplier < 0) ) ||
268 ( (nMultiplicand >= 0) && (nMultiplier >= 0) ) )
269 ret = (((LONGLONG)nMultiplicand * nMultiplier) + (nDivisor/2)) / nDivisor;
271 ret = (((LONGLONG)nMultiplicand * nMultiplier) - (nDivisor/2)) / nDivisor;
273 if ((ret > 2147483647) || (ret < -2147483647)) return -1;
278 /***********************************************************************
279 * GetSystemMSecCount (SYSTEM.6)
280 * GetTickCount (KERNEL32.@)
282 * Get the number of milliseconds the system has been running.
288 * The current tick count.
291 * -The value returned will wrap arounf every 2^32 milliseconds.
292 * -Under Windows, tick 0 is the moment at which the system is rebooted.
293 * Under Wine, tick 0 begins at the moment the wineserver process is started,
295 DWORD WINAPI GetTickCount(void)
298 gettimeofday( &t, NULL );
299 return ((t.tv_sec - server_start_time) * 1000) + (t.tv_usec / 1000);