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- /* Copyright (C) 1999-2022 Free Software Foundation, Inc.
- NOTE: This source is derived from an old version taken from the GNU C
- Library (glibc).
- This file is part of GCC.
- GCC is free software; you can redistribute it and/or modify it under
- the terms of the GNU General Public License as published by the Free
- Software Foundation; either version 3, or (at your option) any later
- version.
- GCC is distributed in the hope that it will be useful, but WITHOUT ANY
- WARRANTY; without even the implied warranty of MERCHANTABILITY or
- FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
- for more details.
- Under Section 7 of GPL version 3, you are granted additional
- permissions described in the GCC Runtime Library Exception, version
- 3.1, as published by the Free Software Foundation.
- You should have received a copy of the GNU General Public License and
- a copy of the GCC Runtime Library Exception along with this program;
- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
- <http://www.gnu.org/licenses/>. */
- #include <stdlib.h>
- #include "exit.h"
- #define atomic_write_barrier() __asm__ ("eieio" ::: "memory")
- /* Register a function to be called by exit. */
- int
- on_exit (void (*func) (int status, void *arg), void *arg)
- {
- struct exit_function *new = __new_exitfn (&__exit_funcs);
- if (new == NULL)
- return -1;
- #ifdef PTR_MANGLE
- PTR_MANGLE (func);
- #endif
- new->func.on.fn = func;
- new->func.on.arg = arg;
- atomic_write_barrier ();
- new->flavor = ef_on;
- return 0;
- }
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