dlls/kernel32/kernel16.c

   1 /*
   2  * 16-bit 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #include <stdarg.h>
  22 #include <stdio.h>
  23
  24 #include "windef.h"
  25 #include "winbase.h"
  26 #include "winternl.h"
  27 #include "wownt32.h"
  28
  29 #include "toolhelp.h"
  30 #include "kernel_private.h"
  31 #include "kernel16_private.h"
  32 #include "wine/debug.h"
  33
  34 WINE_DEFAULT_DEBUG_CHANNEL(module);
  35
  36 /**************************************************************************
  37  *              DllEntryPoint   (KERNEL.669)
  38  */
  39 BOOL WINAPI KERNEL_DllEntryPoint( DWORD reasion, HINSTANCE16 inst, WORD ds,
  40                                   WORD heap, DWORD reserved1, WORD reserved2 )
  41 {
  42     static int done;
  43
  44     /* the entry point can be called multiple times */
  45     if (done) return TRUE;
  46     done = 1;
  47
  48     /* Initialize 16-bit thunking entry points */
  49     if (!WOWTHUNK_Init()) return FALSE;
  50
  51     /* Initialize DOS memory */
  52     if (!DOSMEM_Init()) return FALSE;
  53
  54     /* Initialize special KERNEL entry points */
  55
  56     NE_SetEntryPoint( inst, 178, GetWinFlags16() );
  57
  58     NE_SetEntryPoint( inst, 454, wine_get_cs() );
  59     NE_SetEntryPoint( inst, 455, wine_get_ds() );
  60
  61     NE_SetEntryPoint( inst, 183, DOSMEM_0000H );       /* KERNEL.183: __0000H */
  62     NE_SetEntryPoint( inst, 173, DOSMEM_BiosSysSeg );  /* KERNEL.173: __ROMBIOS */
  63     NE_SetEntryPoint( inst, 193, DOSMEM_BiosDataSeg ); /* KERNEL.193: __0040H */
  64     NE_SetEntryPoint( inst, 194, DOSMEM_BiosSysSeg );  /* KERNEL.194: __F000H */
  65
  66     /* Initialize KERNEL.THHOOK */
  67     TASK_InstallTHHook(MapSL((SEGPTR)GetProcAddress16( inst, (LPCSTR)332 )));
  68
  69     /* Initialize the real-mode selector entry points */
  70 #define SET_ENTRY_POINT( num, addr ) \
  71     NE_SetEntryPoint( inst, (num), GLOBAL_CreateBlock( GMEM_FIXED, \
  72                       DOSMEM_MapDosToLinear(addr), 0x10000, inst, \
  73                       WINE_LDT_FLAGS_DATA ))
  74
  75     SET_ENTRY_POINT( 174, 0xa0000 );  /* KERNEL.174: __A000H */
  76     SET_ENTRY_POINT( 181, 0xb0000 );  /* KERNEL.181: __B000H */
  77     SET_ENTRY_POINT( 182, 0xb8000 );  /* KERNEL.182: __B800H */
  78     SET_ENTRY_POINT( 195, 0xc0000 );  /* KERNEL.195: __C000H */
  79     SET_ENTRY_POINT( 179, 0xd0000 );  /* KERNEL.179: __D000H */
  80     SET_ENTRY_POINT( 190, 0xe0000 );  /* KERNEL.190: __E000H */
  81 #undef SET_ENTRY_POINT
  82
  83     /* Force loading of some dlls */
  84     LoadLibrary16( "system.drv" );
  85
  86     return TRUE;
  87 }
  88
  89 /***********************************************************************
  90  *              EnableDos (KERNEL.41)
  91  *              DisableDos (KERNEL.42)
  92  *              GetLastDiskChange (KERNEL.98)
  93  *              ValidateCodeSegments (KERNEL.100)
  94  *              KbdRst (KERNEL.123)
  95  *              EnableKernel (KERNEL.124)
  96  *              DisableKernel (KERNEL.125)
  97  *              ValidateFreeSpaces (KERNEL.200)
  98  *              K237 (KERNEL.237)
  99  *              BUNNY_351 (KERNEL.351)
 100  *              PIGLET_361 (KERNEL.361)
 101  *
 102  * Entry point for kernel functions that do nothing.
 103  */
 104 LONG WINAPI KERNEL_nop(void)
 105 {
 106     return 0;
 107 }
 108
 109
 110 /* thunk for 16-bit CreateThread */
 111 struct thread_args
 112 {
 113     FARPROC16 proc;
 114     DWORD     param;
 115 };
 116
 117 static DWORD CALLBACK start_thread16( LPVOID threadArgs )
 118 {
 119     struct thread_args args = *(struct thread_args *)threadArgs;
 120     HeapFree( GetProcessHeap(), 0, threadArgs );
 121     return K32WOWCallback16( (DWORD)args.proc, args.param );
 122 }
 123
 124 /***********************************************************************
 125  *           CreateThread16   (KERNEL.441)
 126  */
 127 HANDLE WINAPI CreateThread16( SECURITY_ATTRIBUTES *sa, DWORD stack,
 128                               FARPROC16 start, SEGPTR param,
 129                               DWORD flags, LPDWORD id )
 130 {
 131     struct thread_args *args = HeapAlloc( GetProcessHeap(), 0, sizeof(*args) );
 132     if (!args) return INVALID_HANDLE_VALUE;
 133     args->proc = start;
 134     args->param = param;
 135     return CreateThread( sa, stack, start_thread16, args, flags, id );
 136 }
 137
 138 /***********************************************************************
 139  *           _DebugOutput                    (KERNEL.328)
 140  */
 141 void WINAPIV _DebugOutput( WORD flags, LPCSTR spec, VA_LIST16 valist )
 142 {
 143     char caller[101];
 144
 145     /* Decode caller address */
 146     if (!GetModuleName16( GetExePtr(CURRENT_STACK16->cs), caller, sizeof(caller) ))
 147         sprintf( caller, "%04X:%04X", CURRENT_STACK16->cs, CURRENT_STACK16->ip );
 148
 149     /* FIXME: cannot use wvsnprintf16 from kernel */
 150     /* wvsnprintf16( temp, sizeof(temp), spec, valist ); */
 151
 152     /* Output */
 153     FIXME("%s %04x %s\n", caller, flags, debugstr_a(spec) );
 154 }