dlls/msvcrt/crt_main.c

   1 /*
   2  * mainCRTStartup default entry point
   3  *
   4  * Copyright 2019 Jacek Caban for CodeWeavers
   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 #if 0
  22 #pragma makedep implib
  23 #endif
  24
  25 #include <stdarg.h>
  26 #include <stdlib.h>
  27 #include <process.h>
  28
  29 #include "windef.h"
  30 #include "winbase.h"
  31 #include "winternl.h"
  32
  33 int __cdecl main(int argc, char **argv, char **env);
  34
  35 static const IMAGE_NT_HEADERS *get_nt_header( void )
  36 {
  37     IMAGE_DOS_HEADER *dos = (IMAGE_DOS_HEADER *)NtCurrentTeb()->Peb->ImageBaseAddress;
  38     return (const IMAGE_NT_HEADERS *)((char *)dos + dos->e_lfanew);
  39 }
  40
  41 int __cdecl mainCRTStartup(void)
  42 {
  43     int argc, ret;
  44     char **argv, **env;
  45
  46 #ifdef _UCRT
  47     _configure_narrow_argv(_crt_argv_unexpanded_arguments);
  48     _initialize_narrow_environment();
  49     argc = *__p___argc();
  50     argv = *__p___argv();
  51     env = _get_initial_narrow_environment();
  52 #else
  53     int new_mode =  0;
  54     __getmainargs(&argc, &argv, &env, 0, &new_mode);
  55 #endif
  56     _set_app_type(get_nt_header()->OptionalHeader.Subsystem == IMAGE_SUBSYSTEM_WINDOWS_GUI ? _crt_gui_app : _crt_console_app);
  57
  58     ret = main(argc, argv, env);
  59
  60     exit(ret);
  61     return ret;
  62 }