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>
39 #include "wine/winbase16.h"
40 #include "wine/library.h"
43 #include "kernel_private.h"
44 #include "kernel16_private.h"
45 #include "console_private.h"
47 extern void LOCALE_InitRegistry(void);
48 extern void COMPUTERNAME_Init(void);
50 extern int __wine_set_signal_handler(unsigned, int (*)(unsigned));
51 /* memory/environ.c */
52 extern void ENV_CopyStartupInformation(void);
54 extern int main_create_flags;
56 static CRITICAL_SECTION ldt_section;
57 static CRITICAL_SECTION_DEBUG critsect_debug =
60 { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
61 0, 0, { 0, (DWORD)(__FILE__ ": ldt_section") }
63 static CRITICAL_SECTION ldt_section = { &critsect_debug, -1, 0, 0, 0, 0 };
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)
112 /* FIXME: should probably be done in ntdll */
113 GetSystemInfo( &si );
114 NtCurrentTeb()->Peb->NumberOfProcessors = si.dwNumberOfProcessors;
116 /* Setup registry locale information */
117 LOCALE_InitRegistry();
119 /* Initialize 16-bit thunking entry points */
120 if (!WOWTHUNK_Init()) return FALSE;
122 /* Initialize DOS memory */
123 if (!DOSMEM_Init()) return FALSE;
125 /* Setup computer name */
128 /* copy process information from ntdll */
129 ENV_CopyStartupInformation();
131 if ((hModule = LoadLibrary16( "krnl386.exe" )) >= 32)
133 /* Initialize special KERNEL entry points */
135 /* Initialize KERNEL.178 (__WINFLAGS) with the correct flags value */
136 NE_SetEntryPoint( hModule, 178, GetWinFlags16() );
138 /* Initialize KERNEL.454/455 (__FLATCS/__FLATDS) */
139 NE_SetEntryPoint( hModule, 454, wine_get_cs() );
140 NE_SetEntryPoint( hModule, 455, wine_get_ds() );
142 /* Initialize KERNEL.THHOOK */
143 TASK_InstallTHHook(MapSL((SEGPTR)GetProcAddress16( hModule, (LPCSTR)332 )));
145 /* Initialize the real-mode selector entry points */
146 #define SET_ENTRY_POINT( num, addr ) \
147 NE_SetEntryPoint( hModule, (num), GLOBAL_CreateBlock( GMEM_FIXED, \
148 DOSMEM_MapDosToLinear(addr), 0x10000, hModule, \
149 WINE_LDT_FLAGS_DATA ))
151 SET_ENTRY_POINT( 174, 0xa0000 ); /* KERNEL.174: __A000H */
152 SET_ENTRY_POINT( 181, 0xb0000 ); /* KERNEL.181: __B000H */
153 SET_ENTRY_POINT( 182, 0xb8000 ); /* KERNEL.182: __B800H */
154 SET_ENTRY_POINT( 195, 0xc0000 ); /* KERNEL.195: __C000H */
155 SET_ENTRY_POINT( 179, 0xd0000 ); /* KERNEL.179: __D000H */
156 SET_ENTRY_POINT( 190, 0xe0000 ); /* KERNEL.190: __E000H */
157 NE_SetEntryPoint( hModule, 183, DOSMEM_0000H ); /* KERNEL.183: __0000H */
158 NE_SetEntryPoint( hModule, 173, DOSMEM_BiosSysSeg ); /* KERNEL.173: __ROMBIOS */
159 NE_SetEntryPoint( hModule, 193, DOSMEM_BiosDataSeg ); /* KERNEL.193: __0040H */
160 NE_SetEntryPoint( hModule, 194, DOSMEM_BiosSysSeg ); /* KERNEL.194: __F000H */
161 #undef SET_ENTRY_POINT
163 /* Force loading of some dlls */
164 LoadLibrary16( "system.drv" );
168 /* Create the shared heap for broken win95 native dlls */
169 if (GetVersion() & 0x80000000) HeapCreate( HEAP_SHARED, 0, 0 );
172 /* initialize LDT locking */
173 wine_ldt_init_locking( ldt_lock, ldt_unlock );
175 /* finish the process initialisation for console bits, if needed */
176 __wine_set_signal_handler(SIGINT, CONSOLE_HandleCtrlC);
178 if (main_create_flags & CREATE_NEW_CONSOLE)
180 HMODULE mod = GetModuleHandleA(0);
181 if (RtlImageNtHeader(mod)->OptionalHeader.Subsystem == IMAGE_SUBSYSTEM_WINDOWS_CUI)
184 else if (!(main_create_flags & DETACHED_PROCESS))
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
192 if (main_create_flags & CREATE_NEW_PROCESS_GROUP)
193 SetConsoleCtrlHandler(NULL, TRUE);
195 /* Create 16-bit task */
197 TASK_CreateMainTask();
201 /***********************************************************************
202 * KERNEL initialisation routine
204 BOOL WINAPI DllMain( HINSTANCE hinst, DWORD reason, LPVOID reserved )
208 case DLL_PROCESS_ATTACH:
209 return process_attach();
210 case DLL_THREAD_ATTACH:
213 case DLL_THREAD_DETACH:
216 case DLL_PROCESS_DETACH:
217 WriteOutProfiles16();
223 /***********************************************************************
224 * EnableDos (KERNEL.41)
225 * DisableDos (KERNEL.42)
226 * GetLastDiskChange (KERNEL.98)
227 * ValidateCodeSegments (KERNEL.100)
228 * KbdRst (KERNEL.123)
229 * EnableKernel (KERNEL.124)
230 * DisableKernel (KERNEL.125)
231 * ValidateFreeSpaces (KERNEL.200)
233 * BUNNY_351 (KERNEL.351)
234 * PIGLET_361 (KERNEL.361)
236 * Entry point for kernel functions that do nothing.
238 LONG WINAPI KERNEL_nop(void)
243 /***********************************************************************
244 * MulDiv (KERNEL32.@)
246 * Result of multiplication and division
247 * -1: Overflow occurred or Divisor was 0
249 INT WINAPI MulDiv( INT nMultiplicand, INT nMultiplier, INT nDivisor)
253 if (!nDivisor) return -1;
255 /* We want to deal with a positive divisor to simplify the logic. */
258 nMultiplicand = - nMultiplicand;
259 nDivisor = -nDivisor;
262 /* If the result is positive, we "add" to round. else, we subtract to round. */
263 if ( ( (nMultiplicand < 0) && (nMultiplier < 0) ) ||
264 ( (nMultiplicand >= 0) && (nMultiplier >= 0) ) )
265 ret = (((LONGLONG)nMultiplicand * nMultiplier) + (nDivisor/2)) / nDivisor;
267 ret = (((LONGLONG)nMultiplicand * nMultiplier) - (nDivisor/2)) / nDivisor;
269 if ((ret > 2147483647) || (ret < -2147483647)) return -1;