cgoHasExtraM = true
		newextram()
	}
	initsig(false)
}

// mPark causes a thread to park itself, returning once woken.
//
//go:nosplit
func mPark() {
	gp := getg()
	notesleep(&gp.m.park)
	noteclear(&gp.m.park)
}

// mexit tears down and exits the current thread.
//
// Don't call this directly to exit the thread, since it must run at