amd64/bareMetalOS-0.5.2/baremetal-libc/crt0.c

   1
   2 extern int main(); //int argc, char **argv, char **environ);
   3
   4 extern char __bss_start, _end; // BSS should be the last think before _end
   5
   6 // XXX: environment
   7 char *__env[1] = { 0 };
   8 char **environ = __env;
   9
  10 _start(){
  11   char *i;
  12
  13   // zero BSS
  14   for(i = &__bss_start; i < &_end; i++){
  15     *i = 0;
  16   }
  17
  18
  19   // XXX: get argc and argv
  20
  21   exit(main(0,0, __env));
  22 }