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 <string.h>
  27 #include <sys/stat.h>
  28 #include <signal.h>
  29
  30 #include "winbase.h"
  31 #include "wincon.h"
  32 #include "winternl.h"
  33
  34 #include "wine/winbase16.h"
  35 #include "wine/library.h"
  36 #include "file.h"
  37 #include "global.h"
  38 #include "miscemu.h"
  39 #include "module.h"
  40 #include "task.h"
  41 #include "thread.h"
  42 #include "stackframe.h"
  43 #include "wincon.h"
  44 #include "console_private.h"
  45
  46 extern void LOCALE_Init(void);
  47 extern BOOL RELAY_Init(void);
  48 extern void COMPUTERNAME_Init(void);
  49
  50 extern  int __wine_set_signal_handler(unsigned, int (*)(unsigned));
  51 /* memory/environ.c */
  52 extern void ENV_CopyStartupInformation(void);
  53
  54 extern int main_create_flags;
  55
  56 static CRITICAL_SECTION ldt_section = CRITICAL_SECTION_INIT("ldt_section");
  57
  58 /***********************************************************************
  59  *           locking for LDT routines
  60  */
  61 static void ldt_lock(void)
  62 {
  63     RtlEnterCriticalSection( &ldt_section );
  64 }
  65
  66 static void ldt_unlock(void)
  67 {
  68     RtlLeaveCriticalSection( &ldt_section );
  69 }
  70
  71
  72 /***********************************************************************
  73  *           KERNEL thread initialisation routine
  74  */
  75 static void thread_attach(void)
  76 {
  77     /* allocate the 16-bit stack (FIXME: should be done lazily) */
  78     HGLOBAL16 hstack = K32WOWGlobalAlloc16( GMEM_FIXED, 0x10000 );
  79     NtCurrentTeb()->stack_sel = GlobalHandleToSel16( hstack );
  80     NtCurrentTeb()->cur_stack = MAKESEGPTR( NtCurrentTeb()->stack_sel,
  81                                             0x10000 - sizeof(STACK16FRAME) );
  82 }
  83
  84
  85 /***********************************************************************
  86  *           KERNEL thread finalisation routine
  87  */
  88 static void thread_detach(void)
  89 {
  90     /* free the 16-bit stack */
  91     K32WOWGlobalFree16( NtCurrentTeb()->stack_sel );
  92     NtCurrentTeb()->cur_stack = 0;
  93 }
  94
  95
  96 /***********************************************************************
  97  *           KERNEL process initialisation routine
  98  */
  99 static BOOL process_attach(void)
 100 {
 101     HMODULE16 hModule;
 102
 103     /* Get the umask */
 104     FILE_umask = umask(0777);
 105     umask( FILE_umask );
 106
 107     /* Setup codepage info */
 108     LOCALE_Init();
 109
 110     /* Initialize relay entry points */
 111     if (!RELAY_Init()) return FALSE;
 112
 113     /* Initialize DOS memory */
 114     if (!DOSMEM_Init(0)) return FALSE;
 115
 116     /* Setup computer name */
 117     COMPUTERNAME_Init();
 118
 119     /* copy process information from ntdll */
 120     ENV_CopyStartupInformation();
 121
 122     if ((hModule = LoadLibrary16( "krnl386.exe" )) >= 32)
 123     {
 124         /* Initialize special KERNEL entry points */
 125
 126         /* Initialize KERNEL.178 (__WINFLAGS) with the correct flags value */
 127         NE_SetEntryPoint( hModule, 178, GetWinFlags16() );
 128
 129         /* Initialize KERNEL.454/455 (__FLATCS/__FLATDS) */
 130         NE_SetEntryPoint( hModule, 454, wine_get_cs() );
 131         NE_SetEntryPoint( hModule, 455, wine_get_ds() );
 132
 133         /* Initialize KERNEL.THHOOK */
 134         TASK_InstallTHHook(MapSL((SEGPTR)GetProcAddress16( hModule, (LPCSTR)332 )));
 135
 136         /* Initialize the real-mode selector entry points */
 137 #define SET_ENTRY_POINT( num, addr ) \
 138     NE_SetEntryPoint( hModule, (num), GLOBAL_CreateBlock( GMEM_FIXED, \
 139                       DOSMEM_MapDosToLinear(addr), 0x10000, hModule, \
 140                       WINE_LDT_FLAGS_DATA ))
 141
 142         SET_ENTRY_POINT( 174, 0xa0000 );  /* KERNEL.174: __A000H */
 143         SET_ENTRY_POINT( 181, 0xb0000 );  /* KERNEL.181: __B000H */
 144         SET_ENTRY_POINT( 182, 0xb8000 );  /* KERNEL.182: __B800H */
 145         SET_ENTRY_POINT( 195, 0xc0000 );  /* KERNEL.195: __C000H */
 146         SET_ENTRY_POINT( 179, 0xd0000 );  /* KERNEL.179: __D000H */
 147         SET_ENTRY_POINT( 190, 0xe0000 );  /* KERNEL.190: __E000H */
 148         NE_SetEntryPoint( hModule, 183, DOSMEM_0000H );       /* KERNEL.183: __0000H */
 149         NE_SetEntryPoint( hModule, 173, DOSMEM_BiosSysSeg );  /* KERNEL.173: __ROMBIOS */
 150         NE_SetEntryPoint( hModule, 193, DOSMEM_BiosDataSeg ); /* KERNEL.193: __0040H */
 151         NE_SetEntryPoint( hModule, 194, DOSMEM_BiosSysSeg );  /* KERNEL.194: __F000H */
 152 #undef SET_ENTRY_POINT
 153     }
 154
 155     /* Force loading of some dlls */
 156     LoadLibrary16( "system" );
 157
 158     /* Create 16-bit task */
 159     TASK_CreateMainTask();
 160
 161     /* Create the shared heap for broken win95 native dlls */
 162     HeapCreate( HEAP_SHARED, 0, 0 );
 163
 164     /* initialize LDT locking */
 165     wine_ldt_init_locking( ldt_lock, ldt_unlock );
 166
 167     /* finish the process initialisation for console bits, if needed */
 168     __wine_set_signal_handler(SIGINT, CONSOLE_HandleCtrlC);
 169
 170     if (main_create_flags & CREATE_NEW_CONSOLE)
 171     {
 172         HMODULE mod = GetModuleHandleA(0);
 173         if (RtlImageNtHeader(mod)->OptionalHeader.Subsystem == IMAGE_SUBSYSTEM_WINDOWS_CUI)
 174             AllocConsole();
 175     }
 176     else if (!(main_create_flags & DETACHED_PROCESS))
 177     {
 178         /* 1/ shall inherit console + handles
 179          * 2/ shall create std handles, if handles are not inherited
 180          * TBD when not using wineserver handles for console handles
 181          */
 182     }
 183
 184     if (main_create_flags & CREATE_NEW_PROCESS_GROUP)
 185         SetConsoleCtrlHandler(NULL, TRUE);
 186
 187     thread_attach();
 188     return TRUE;
 189 }
 190
 191 /***********************************************************************
 192  *           KERNEL initialisation routine
 193  */
 194 BOOL WINAPI MAIN_KernelInit( HINSTANCE hinst, DWORD reason, LPVOID reserved )
 195 {
 196     switch(reason)
 197     {
 198     case DLL_PROCESS_ATTACH:
 199         return process_attach();
 200     case DLL_THREAD_ATTACH:
 201         thread_attach();
 202         break;
 203     case DLL_THREAD_DETACH:
 204         thread_detach();
 205         break;
 206     case DLL_PROCESS_DETACH:
 207         WriteOutProfiles16();
 208         break;
 209     }
 210     return TRUE;
 211 }
 212
 213 /***********************************************************************
 214  *              EnableDos (KERNEL.41)
 215  *              DisableDos (KERNEL.42)
 216  *              GetLastDiskChange (KERNEL.98)
 217  *              ValidateCodeSegments (KERNEL.100)
 218  *              KbdRst (KERNEL.123)
 219  *              EnableKernel (KERNEL.124)
 220  *              DisableKernel (KERNEL.125)
 221  *              ValidateFreeSpaces (KERNEL.200)
 222  *              K237 (KERNEL.237)
 223  *              BUNNY_351 (KERNEL.351)
 224  *              PIGLET_361 (KERNEL.361)
 225  *
 226  * Entry point for kernel functions that do nothing.
 227  */
 228 LONG WINAPI KERNEL_nop(void)
 229 {
 230     return 0;
 231 }
 232
 233 /***********************************************************************
 234  *              SwitchToThread (KERNEL32.@)
 235  */
 236
 237 BOOL WINAPI SwitchToThread(void)
 238 {
 239     Sleep(0);
 240     return 1;
 241 }