func SetIntArgRegs(a int) int {
	lock(&finlock)
	old := intArgRegs
	if a >= 0 {
		intArgRegs = a
	}
	unlock(&finlock)
	return old
}

func FinalizerGAsleep() bool {
	return fingStatus.Load()&fingWait != 0
}

// For GCTestMoveStackOnNextCall, it's important not to introduce an
// extra layer of call, since then there's a return before the "real"
// next call.