extern void (*_ctors_start[0])(void), (*_ctors_end[0])(void);
extern void (*_dtors_start[0])(void), (*_dtors_end[0])(void);

void init (void)
{
    for (void (**ctor)(void) = _ctors_start; ctor != _ctors_end; ctor++)
    {
        (*ctor)();
    }
}

void fini (void)
{
    for (void (**dtor)(void) = _dtors_start; dtor != _dtors_end; dtor++)
    {
        (*dtor)();
    }
}