apps/lib/crt0/crt0.c

   1 /*
   2     meinOS - A unix-like x86 microkernel operating system
   3     Copyright (C) 2008  Janosch Gräf <janosch.graef@gmx.net>
   4
   5     This program is free software: you can redistribute it and/or modify
   6     it under the terms of the GNU Lesser General Public License as published by
   7     the Free Software Foundation, either version 3 of the License, or
   8     (at your option) any later version.
   9
  10     This program is distributed in the hope that it will be useful,
  11     but WITHOUT ANY WARRANTY; without even the implied warranty of
  12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13     GNU Lesser General Public License for more details.
  14
  15     You should have received a copy of the GNU Lesser General Public License
  16     along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17 */
  18
  19 #include <sys/types.h>
  20 #include <sys/shm.h>
  21 #include <stdlib.h>
  22 #include <string.h>
  23 #include <unistd.h>
  24 #include <syscall.h>
  25 #include <misc.h>
  26
  27 int main(int argc,char *argv[]);
  28 void _stdlib_init();     ///< @see apps/lib/stdlibc/stdlib.c
  29 void _libmeinos_init();  ///< @see apps/lib/libmeinos/misc.c
  30
  31 void _start() {
  32   char *backup_argv[] = { NULL };
  33   char **argv = backup_argv;
  34   int argc = 0;
  35
  36   // initialize libs
  37   _stdlib_init();
  38   _libmeinos_init();
  39
  40   // get process data
  41   int var = syscall_call(SYSCALL_PROC_GETVAR,1,getpid());
  42   if (var!=-1) proc_unpack_procdata(var,&argc,&argv);
  43
  44   /*if (var!=-1) {
  45     _process_data = shmat(var,NULL,0);
  46     if (_process_data!=NULL) get_cmdline(_process_data,&argv,&argc,&_stdin,&_stdout,&_stderr);
  47   }
  48   else _process_data = NULL;
  49
  50   // post initialize stdlibc
  51   _stdlib_init_post(_stdin,_stdout,_stderr);
  52   atexit(crt0_quit);*/
  53
  54   // call main function and exit
  55   exit(main(argc,argv));
  56
  57   while (1);
  58 }