lib/libc/exit.c

   1 /*
   2  * Copyright (c) 2015-2018, ARM Limited and Contributors. All rights reserved.
   3  *
   4  * SPDX-License-Identifier: BSD-3-Clause
   5  */
   6
   7 #include <stdlib.h>
   8
   9 static void (*exitfun)(void);
  10
  11 void exit(int status)
  12 {
  13         if (exitfun)
  14                 (*exitfun)();
  15         for (;;)
  16                 ;
  17 }
  18
  19 int atexit(void (*fun)(void))
  20 {
  21         if (exitfun)
  22                 return -1;
  23         exitfun = fun;
  24
  25         return 0;
  26 }