49 lines
1.5 KiB
C
49 lines
1.5 KiB
C
/* 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;
|
|
}
|