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"
37 #include "wine/winbase16.h"
38 #include "wine/library.h"
45 #include "stackframe.h"
47 #include "kernel_private.h"
48 #include "console_private.h"
50 extern void LOCALE_Init(void);
51 extern void COMPUTERNAME_Init(void);
53 extern int __wine_set_signal_handler(unsigned, int (*)(unsigned));
54 /* memory/environ.c */
55 extern void ENV_CopyStartupInformation(void);
57 extern int main_create_flags;
59 static CRITICAL_SECTION ldt_section;
60 static CRITICAL_SECTION_DEBUG critsect_debug =
63 { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
64 0, 0, { 0, (DWORD)(__FILE__ ": ldt_section") }
66 static CRITICAL_SECTION ldt_section = { &critsect_debug, -1, 0, 0, 0, 0 };
68 /***********************************************************************
69 * locking for LDT routines
71 static void ldt_lock(void)
73 RtlEnterCriticalSection( &ldt_section );
76 static void ldt_unlock(void)
78 RtlLeaveCriticalSection( &ldt_section );
82 /***********************************************************************
83 * KERNEL thread initialisation routine
85 static void thread_attach(void)
87 /* allocate the 16-bit stack (FIXME: should be done lazily) */
88 HGLOBAL16 hstack = K32WOWGlobalAlloc16( GMEM_FIXED, 0x10000 );
89 NtCurrentTeb()->stack_sel = GlobalHandleToSel16( hstack );
90 NtCurrentTeb()->cur_stack = MAKESEGPTR( NtCurrentTeb()->stack_sel,
91 0x10000 - sizeof(STACK16FRAME) );
95 /***********************************************************************
96 * KERNEL thread finalisation routine
98 static void thread_detach(void)
100 /* free the 16-bit stack */
101 K32WOWGlobalFree16( NtCurrentTeb()->stack_sel );
102 NtCurrentTeb()->cur_stack = 0;
103 if (!(NtCurrentTeb()->tibflags & TEBF_WIN32)) TASK_ExitTask();
107 /***********************************************************************
108 * KERNEL process initialisation routine
110 static BOOL process_attach(void)
115 FILE_umask = umask(0777);
118 /* Setup codepage info */
121 /* Initialize 16-bit thunking entry points */
122 if (!WOWTHUNK_Init()) return FALSE;
124 /* Initialize DOS memory */
125 if (!DOSMEM_Init(0)) return FALSE;
127 /* Setup computer name */
130 /* copy process information from ntdll */
131 ENV_CopyStartupInformation();
133 if ((hModule = LoadLibrary16( "krnl386.exe" )) >= 32)
135 /* Initialize special KERNEL entry points */
137 /* Initialize KERNEL.178 (__WINFLAGS) with the correct flags value */
138 NE_SetEntryPoint( hModule, 178, GetWinFlags16() );
140 /* Initialize KERNEL.454/455 (__FLATCS/__FLATDS) */
141 NE_SetEntryPoint( hModule, 454, wine_get_cs() );
142 NE_SetEntryPoint( hModule, 455, wine_get_ds() );
144 /* Initialize KERNEL.THHOOK */
145 TASK_InstallTHHook(MapSL((SEGPTR)GetProcAddress16( hModule, (LPCSTR)332 )));
147 /* Initialize the real-mode selector entry points */
148 #define SET_ENTRY_POINT( num, addr ) \
149 NE_SetEntryPoint( hModule, (num), GLOBAL_CreateBlock( GMEM_FIXED, \
150 DOSMEM_MapDosToLinear(addr), 0x10000, hModule, \
151 WINE_LDT_FLAGS_DATA ))
153 SET_ENTRY_POINT( 174, 0xa0000 ); /* KERNEL.174: __A000H */
154 SET_ENTRY_POINT( 181, 0xb0000 ); /* KERNEL.181: __B000H */
155 SET_ENTRY_POINT( 182, 0xb8000 ); /* KERNEL.182: __B800H */
156 SET_ENTRY_POINT( 195, 0xc0000 ); /* KERNEL.195: __C000H */
157 SET_ENTRY_POINT( 179, 0xd0000 ); /* KERNEL.179: __D000H */
158 SET_ENTRY_POINT( 190, 0xe0000 ); /* KERNEL.190: __E000H */
159 NE_SetEntryPoint( hModule, 183, DOSMEM_0000H ); /* KERNEL.183: __0000H */
160 NE_SetEntryPoint( hModule, 173, DOSMEM_BiosSysSeg ); /* KERNEL.173: __ROMBIOS */
161 NE_SetEntryPoint( hModule, 193, DOSMEM_BiosDataSeg ); /* KERNEL.193: __0040H */
162 NE_SetEntryPoint( hModule, 194, DOSMEM_BiosSysSeg ); /* KERNEL.194: __F000H */
163 #undef SET_ENTRY_POINT
165 /* Force loading of some dlls */
166 LoadLibrary16( "system.drv" );
169 /* Create the shared heap for broken win95 native dlls */
170 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 MAIN_KernelInit( 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 * SwitchToThread (KERNEL32.@)
247 BOOL WINAPI SwitchToThread(void)