Oldlinux Cross Reference
Linux/lib/_exit.c

   /*
    *  linux/lib/_exit.c
    *
    *  (C) 1991  Linus Torvalds
    */
   
   #define __LIBRARY__
   #include <unistd.h>
   
  volatile void _exit(int exit_code)
  {
          __asm__("int $0x80"::"a" (__NR_exit),"b" (exit_code));
  }