int
setjmp(label_t *label)
void
longjmp(label_t *label)
)
function saves its calling environment in
label.
It returns zero on success.
The
longjmp()
function restores the environment saved by the most recent
invocation of
setjmp().
It returns so that kernel execution continues as if
the corresponding invocation of the
setjmp()
had just returned.
setjmp()
and
longjmp()
are a machine-independent interface for machine-dependent
implementations.
These functions are primarily used by ddb(4).