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 int __wine_set_signal_handler(unsigned, int (*)(unsigned));
49 extern int main_create_flags;
51 static CRITICAL_SECTION ldt_section;
52 static CRITICAL_SECTION_DEBUG critsect_debug =
55 { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
56 0, 0, { 0, (DWORD)(__FILE__ ": ldt_section") }
58 static CRITICAL_SECTION ldt_section = { &critsect_debug, -1, 0, 0, 0, 0 };
60 /***********************************************************************
61 * locking for LDT routines
63 static void ldt_lock(void)
65 RtlEnterCriticalSection( &ldt_section );
68 static void ldt_unlock(void)
70 RtlLeaveCriticalSection( &ldt_section );
74 /***********************************************************************
75 * KERNEL thread initialisation routine
77 static void thread_attach(void)
79 /* allocate the 16-bit stack (FIXME: should be done lazily) */
80 HGLOBAL16 hstack = K32WOWGlobalAlloc16( GMEM_FIXED, 0x10000 );
81 kernel_get_thread_data()->stack_sel = GlobalHandleToSel16( hstack );
82 NtCurrentTeb()->WOW32Reserved = (void *)MAKESEGPTR( kernel_get_thread_data()->stack_sel,
83 0x10000 - sizeof(STACK16FRAME) );
87 /***********************************************************************
88 * KERNEL thread finalisation routine
90 static void thread_detach(void)
92 /* free the 16-bit stack */
93 K32WOWGlobalFree16( kernel_get_thread_data()->stack_sel );
94 NtCurrentTeb()->WOW32Reserved = 0;
95 if (NtCurrentTeb()->Tib.SubSystemTib) TASK_ExitTask();
99 /***********************************************************************
100 * KERNEL process initialisation routine
102 static BOOL process_attach(void)
107 /* FIXME: should probably be done in ntdll */
108 GetSystemInfo( &si );
109 NtCurrentTeb()->Peb->NumberOfProcessors = si.dwNumberOfProcessors;
111 /* Setup registry locale information */
112 LOCALE_InitRegistry();
114 /* Initialize 16-bit thunking entry points */
115 if (!WOWTHUNK_Init()) return FALSE;
117 /* Initialize DOS memory */
118 if (!DOSMEM_Init()) return FALSE;
120 /* Setup computer name */
123 /* copy process information from ntdll */
124 ENV_CopyStartupInformation();
126 if ((hModule = LoadLibrary16( "krnl386.exe" )) >= 32)
128 /* Initialize special KERNEL entry points */
130 /* Initialize KERNEL.178 (__WINFLAGS) with the correct flags value */
131 NE_SetEntryPoint( hModule, 178, GetWinFlags16() );
133 /* Initialize KERNEL.454/455 (__FLATCS/__FLATDS) */
134 NE_SetEntryPoint( hModule, 454, wine_get_cs() );
135 NE_SetEntryPoint( hModule, 455, wine_get_ds() );
137 /* Initialize KERNEL.THHOOK */
138 TASK_InstallTHHook(MapSL((SEGPTR)GetProcAddress16( hModule, (LPCSTR)332 )));
140 /* Initialize the real-mode selector entry points */
141 #define SET_ENTRY_POINT( num, addr ) \
142 NE_SetEntryPoint( hModule, (num), GLOBAL_CreateBlock( GMEM_FIXED, \
143 DOSMEM_MapDosToLinear(addr), 0x10000, hModule, \
144 WINE_LDT_FLAGS_DATA ))
146 SET_ENTRY_POINT( 174, 0xa0000 ); /* KERNEL.174: __A000H */
147 SET_ENTRY_POINT( 181, 0xb0000 ); /* KERNEL.181: __B000H */
148 SET_ENTRY_POINT( 182, 0xb8000 ); /* KERNEL.182: __B800H */
149 SET_ENTRY_POINT( 195, 0xc0000 ); /* KERNEL.195: __C000H */
150 SET_ENTRY_POINT( 179, 0xd0000 ); /* KERNEL.179: __D000H */
151 SET_ENTRY_POINT( 190, 0xe0000 ); /* KERNEL.190: __E000H */
152 NE_SetEntryPoint( hModule, 183, DOSMEM_0000H ); /* KERNEL.183: __0000H */
153 NE_SetEntryPoint( hModule, 173, DOSMEM_BiosSysSeg ); /* KERNEL.173: __ROMBIOS */
154 NE_SetEntryPoint( hModule, 193, DOSMEM_BiosDataSeg ); /* KERNEL.193: __0040H */
155 NE_SetEntryPoint( hModule, 194, DOSMEM_BiosSysSeg ); /* KERNEL.194: __F000H */
156 #undef SET_ENTRY_POINT
158 /* Force loading of some dlls */
159 LoadLibrary16( "system.drv" );
163 /* Create the shared heap for broken win95 native dlls */
164 if (GetVersion() & 0x80000000) HeapCreate( HEAP_SHARED, 0, 0 );
167 /* initialize LDT locking */
168 wine_ldt_init_locking( ldt_lock, ldt_unlock );
170 /* finish the process initialisation for console bits, if needed */
171 __wine_set_signal_handler(SIGINT, CONSOLE_HandleCtrlC);
173 if (main_create_flags & CREATE_NEW_CONSOLE)
175 HMODULE mod = GetModuleHandleA(0);
176 if (RtlImageNtHeader(mod)->OptionalHeader.Subsystem == IMAGE_SUBSYSTEM_WINDOWS_CUI)
179 else if (!(main_create_flags & DETACHED_PROCESS))
181 /* 1/ shall inherit console + handles
182 * 2/ shall create std handles, if handles are not inherited
183 * TBD when not using wineserver handles for console handles
187 if (main_create_flags & CREATE_NEW_PROCESS_GROUP)
188 SetConsoleCtrlHandler(NULL, TRUE);
190 /* Create 16-bit task */
192 TASK_CreateMainTask();
196 /***********************************************************************
197 * KERNEL initialisation routine
199 BOOL WINAPI DllMain( HINSTANCE hinst, DWORD reason, LPVOID reserved )
203 case DLL_PROCESS_ATTACH:
204 return process_attach();
205 case DLL_THREAD_ATTACH:
208 case DLL_THREAD_DETACH:
211 case DLL_PROCESS_DETACH:
212 WriteOutProfiles16();
218 /***********************************************************************
219 * EnableDos (KERNEL.41)
220 * DisableDos (KERNEL.42)
221 * GetLastDiskChange (KERNEL.98)
222 * ValidateCodeSegments (KERNEL.100)
223 * KbdRst (KERNEL.123)
224 * EnableKernel (KERNEL.124)
225 * DisableKernel (KERNEL.125)
226 * ValidateFreeSpaces (KERNEL.200)
228 * BUNNY_351 (KERNEL.351)
229 * PIGLET_361 (KERNEL.361)
231 * Entry point for kernel functions that do nothing.
233 LONG WINAPI KERNEL_nop(void)
238 /***********************************************************************
239 * MulDiv (KERNEL32.@)
241 * Result of multiplication and division
242 * -1: Overflow occurred or Divisor was 0
244 INT WINAPI MulDiv( INT nMultiplicand, INT nMultiplier, INT nDivisor)
248 if (!nDivisor) return -1;
250 /* We want to deal with a positive divisor to simplify the logic. */
253 nMultiplicand = - nMultiplicand;
254 nDivisor = -nDivisor;
257 /* If the result is positive, we "add" to round. else, we subtract to round. */
258 if ( ( (nMultiplicand < 0) && (nMultiplier < 0) ) ||
259 ( (nMultiplicand >= 0) && (nMultiplier >= 0) ) )
260 ret = (((LONGLONG)nMultiplicand * nMultiplier) + (nDivisor/2)) / nDivisor;
262 ret = (((LONGLONG)nMultiplicand * nMultiplier) - (nDivisor/2)) / nDivisor;
264 if ((ret > 2147483647) || (ret < -2147483647)) return -1;