newlib-cygwin/newlib/libc/stdlib/cxa_atexit.c

42 lines
825 B
C

/*
* Implementation of __cxa_atexit.
*/
#include <stddef.h>
#include <stdlib.h>
#include <reent.h>
#include <sys/lock.h>
#include "atexit.h"
#ifdef _REENT_SMALL
#include "on_exit_args.h"
/* force linking of static instance of _on_exit_args */
const void * const __cxa_atexit_dummy = &__on_exit_args;
#endif /* def _REENT_SMALL */
/*
* Register a function to be performed at exit or DSO unload.
*/
int
_DEFUN (__cxa_atexit,
(fn, arg, d),
void (*fn) (void *) _AND
void *arg _AND
void *d)
{
#ifdef _LITE_EXIT
/* Refer to comments in __atexit.c for more details of lite exit. */
int __register_exitproc _PARAMS ((int, void (*fn) (void), _PTR, _PTR))
__attribute__ ((weak));
if (!__register_exitproc)
return 0;
else
#endif
return __register_exitproc (__et_cxa, (void (*)(void)) fn, arg, d);
}