dlls/kernel32/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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #include "config.h"
  22 #include "wine/port.h"
  23
  24 #include <assert.h>
  25 #include <ctype.h>
  26 #include <stdarg.h>
  27 #include <string.h>
  28 #include <signal.h>
  29
  30 #include "windef.h"
  31 #include "winbase.h"
  32 #include "wincon.h"
  33 #include "winternl.h"
  34 #include "wownt32.h"
  35
  36 #include "wine/winbase16.h"
  37 #include "wine/library.h"
  38 #include "toolhelp.h"
  39 #include "kernel_private.h"
  40 #include "kernel16_private.h"
  41 #include "console_private.h"
  42 #include "wine/debug.h"
  43
  44 WINE_DEFAULT_DEBUG_CHANNEL(process);
  45
  46 extern  int __wine_set_signal_handler(unsigned, int (*)(unsigned));
  47
  48 static ULONGLONG server_start_time;
  49
  50 /***********************************************************************
  51  *           KERNEL thread initialisation routine
  52  */
  53 static void thread_attach(void)
  54 {
  55     /* allocate the 16-bit stack (FIXME: should be done lazily) */
  56     HGLOBAL16 hstack = WOWGlobalAlloc16( GMEM_FIXED, 0x10000 );
  57     kernel_get_thread_data()->stack_sel = GlobalHandleToSel16( hstack );
  58     NtCurrentTeb()->WOW32Reserved = (void *)MAKESEGPTR( kernel_get_thread_data()->stack_sel,
  59                                                         0x10000 - sizeof(STACK16FRAME) );
  60 }
  61
  62
  63 /***********************************************************************
  64  *           KERNEL thread finalisation routine
  65  */
  66 static void thread_detach(void)
  67 {
  68     /* free the 16-bit stack */
  69     WOWGlobalFree16( kernel_get_thread_data()->stack_sel );
  70     NtCurrentTeb()->WOW32Reserved = 0;
  71     if (NtCurrentTeb()->Tib.SubSystemTib) TASK_ExitTask();
  72 }
  73
  74
  75 /***********************************************************************
  76  *           set_entry_point
  77  */
  78 static void set_entry_point( HMODULE module, const char *name, DWORD rva )
  79 {
  80     IMAGE_EXPORT_DIRECTORY *exports;
  81     DWORD exp_size;
  82
  83     if ((exports = RtlImageDirectoryEntryToData( module, TRUE,
  84                                                   IMAGE_DIRECTORY_ENTRY_EXPORT, &exp_size )))
  85     {
  86         DWORD *functions = (DWORD *)((char *)module + exports->AddressOfFunctions);
  87         const WORD *ordinals = (const WORD *)((const char *)module + exports->AddressOfNameOrdinals);
  88         const DWORD *names = (const DWORD *)((const char *)module +  exports->AddressOfNames);
  89         int min = 0, max = exports->NumberOfNames - 1;
  90
  91         while (min <= max)
  92         {
  93             int res, pos = (min + max) / 2;
  94             const char *ename = (const char *)module + names[pos];
  95             if (!(res = strcmp( ename, name )))
  96             {
  97                 WORD ordinal = ordinals[pos];
  98                 assert( ordinal < exports->NumberOfFunctions );
  99                 TRACE( "setting %s at %p to %08x\n", name, &functions[ordinal], rva );
 100                 functions[ordinal] = rva;
 101                 return;
 102             }
 103             if (res > 0) max = pos - 1;
 104             else min = pos + 1;
 105         }
 106     }
 107 }
 108
 109
 110 /***********************************************************************
 111  *           KERNEL process initialisation routine
 112  */
 113 static BOOL process_attach( HMODULE module )
 114 {
 115     SYSTEM_INFO si;
 116     SYSTEM_TIMEOFDAY_INFORMATION ti;
 117     RTL_USER_PROCESS_PARAMETERS *params = NtCurrentTeb()->Peb->ProcessParameters;
 118
 119     /* FIXME: should probably be done in ntdll */
 120     GetSystemInfo( &si );
 121     NtCurrentTeb()->Peb->NumberOfProcessors = si.dwNumberOfProcessors;
 122
 123     NtQuerySystemInformation( SystemTimeOfDayInformation, &ti, sizeof(ti), NULL );
 124     server_start_time = ti.liKeBootTime.QuadPart;
 125
 126     /* Setup registry locale information */
 127     LOCALE_InitRegistry();
 128
 129     /* Setup computer name */
 130     COMPUTERNAME_Init();
 131
 132     /* convert value from server:
 133      * + 0 => INVALID_HANDLE_VALUE
 134      * + console handle needs to be mapped
 135      */
 136     if (!params->hStdInput)
 137         params->hStdInput = INVALID_HANDLE_VALUE;
 138     else if (VerifyConsoleIoHandle(console_handle_map(params->hStdInput)))
 139         params->hStdInput = console_handle_map(params->hStdInput);
 140
 141     if (!params->hStdOutput)
 142         params->hStdOutput = INVALID_HANDLE_VALUE;
 143     else if (VerifyConsoleIoHandle(console_handle_map(params->hStdOutput)))
 144         params->hStdOutput = console_handle_map(params->hStdOutput);
 145
 146     if (!params->hStdError)
 147         params->hStdError = INVALID_HANDLE_VALUE;
 148     else if (VerifyConsoleIoHandle(console_handle_map(params->hStdError)))
 149         params->hStdError = console_handle_map(params->hStdError);
 150
 151     /* copy process information from ntdll */
 152     ENV_CopyStartupInformation();
 153
 154     if (!(GetVersion() & 0x80000000))
 155     {
 156         /* Securom checks for this one when version is NT */
 157         set_entry_point( module, "FT_Thunk", 0 );
 158     }
 159 #ifdef __i386__
 160     else
 161     {
 162         /* create the shared heap for broken win95 native dlls */
 163         HeapCreate( HEAP_SHARED, 0, 0 );
 164         /* setup emulation of protected instructions from 32-bit code */
 165         RtlAddVectoredExceptionHandler( TRUE, INSTR_vectored_handler );
 166     }
 167 #endif
 168
 169     /* finish the process initialisation for console bits, if needed */
 170     __wine_set_signal_handler(SIGINT, CONSOLE_HandleCtrlC);
 171
 172     if (params->ConsoleHandle == (HANDLE)1)  /* FIXME */
 173     {
 174         HMODULE mod = GetModuleHandleA(0);
 175         if (RtlImageNtHeader(mod)->OptionalHeader.Subsystem == IMAGE_SUBSYSTEM_WINDOWS_CUI)
 176             AllocConsole();
 177     }
 178     /* else TODO for DETACHED_PROCESS:
 179      * 1/ inherit console + handles
 180      * 2/ create std handles, if handles are not inherited
 181      * TBD when not using wineserver handles for console handles
 182      */
 183
 184     /* Create 16-bit task */
 185     LoadLibrary16( "krnl386.exe" );
 186     thread_attach();
 187     TASK_CreateMainTask();
 188     return TRUE;
 189 }
 190
 191 /***********************************************************************
 192  *           KERNEL initialisation routine
 193  */
 194 BOOL WINAPI DllMain( HINSTANCE hinst, DWORD reason, LPVOID reserved )
 195 {
 196     switch(reason)
 197     {
 198     case DLL_PROCESS_ATTACH:
 199         return process_attach( hinst );
 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  *           MulDiv   (KERNEL32.@)
 215  * RETURNS
 216  *      Result of multiplication and division
 217  *      -1: Overflow occurred or Divisor was 0
 218  */
 219 INT WINAPI MulDiv( INT nMultiplicand, INT nMultiplier, INT nDivisor)
 220 {
 221     LONGLONG ret;
 222
 223     if (!nDivisor) return -1;
 224
 225     /* We want to deal with a positive divisor to simplify the logic. */
 226     if (nDivisor < 0)
 227     {
 228       nMultiplicand = - nMultiplicand;
 229       nDivisor = -nDivisor;
 230     }
 231
 232     /* If the result is positive, we "add" to round. else, we subtract to round. */
 233     if ( ( (nMultiplicand <  0) && (nMultiplier <  0) ) ||
 234          ( (nMultiplicand >= 0) && (nMultiplier >= 0) ) )
 235       ret = (((LONGLONG)nMultiplicand * nMultiplier) + (nDivisor/2)) / nDivisor;
 236     else
 237       ret = (((LONGLONG)nMultiplicand * nMultiplier) - (nDivisor/2)) / nDivisor;
 238
 239     if ((ret > 2147483647) || (ret < -2147483647)) return -1;
 240     return ret;
 241 }
 242
 243
 244 /******************************************************************************
 245  *           GetTickCount64       (KERNEL32.@)
 246  */
 247 ULONGLONG WINAPI GetTickCount64(void)
 248 {
 249     LARGE_INTEGER now;
 250
 251     NtQuerySystemTime( &now );
 252     return (now.QuadPart - server_start_time) / 10000;
 253 }
 254
 255
 256 /***********************************************************************
 257  *           GetTickCount       (KERNEL32.@)
 258  *
 259  * Get the number of milliseconds the system has been running.
 260  *
 261  * PARAMS
 262  *  None.
 263  *
 264  * RETURNS
 265  *  The current tick count.
 266  *
 267  * NOTES
 268  *  -The value returned will wrap arounf every 2^32 milliseconds.
 269  *  -Under Windows, tick 0 is the moment at which the system is rebooted.
 270  *  Under Wine, tick 0 begins at the moment the wineserver process is started,
 271  */
 272 DWORD WINAPI GetTickCount(void)
 273 {
 274     return GetTickCount64();
 275 }