newlib/libc/misc/fini.c

   1 /*
   2  * Copyright (C) 2010 CodeSourcery, Inc.
   3  *
   4  * Permission to use, copy, modify, and distribute this file
   5  * for any purpose is hereby granted without fee, provided that
   6  * the above copyright notice and this notice appears in all
   7  * copies.
   8  *
   9  * This file is distributed WITHOUT ANY WARRANTY; without even the implied
  10  * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  11  */
  12
  13 /* Handle ELF .{pre_init,init,fini}_array sections.  */
  14 #include <sys/types.h>
  15
  16 #ifdef _HAVE_INITFINI_ARRAY
  17 extern void (*__fini_array_start []) (void) __attribute__((weak));
  18 extern void (*__fini_array_end []) (void) __attribute__((weak));
  19
  20 #ifdef _HAVE_INIT_FINI
  21 extern void _fini (void);
  22 #endif
  23
  24 /* Run all the cleanup routines.  */
  25 void
  26 __libc_fini_array (void)
  27 {
  28   size_t count;
  29   size_t i;
  30
  31   count = __fini_array_end - __fini_array_start;
  32   for (i = count; i > 0; i--)
  33     __fini_array_start[i-1] ();
  34
  35 #ifdef _HAVE_INIT_FINI
  36   _fini ();
  37 #endif
  38 }
  39 #endif