kdb_alt_break
kdb_alt_break(ch, &alt_break_state);
kdb_alt_break(c, &dc->brk_state);
kdb_alt_break(ch, &alt_break_state);
kdb_alt_break(c, &sc->sc_altbrk);
kdb_alt_break(sc->sc_rxbuf[rxp++], &sc->sc_altbrk);
kdb_alt_break(buf[i],
kdb_alt_break(c, &vd->vd_altbrk);
kdb_alt_break(ret, &cons->altbrk);
kdb_alt_break(ch, &alt_break_state);
kdb_alt_break(c, &sc->alt_break_state);
kdb_alt_break(c, &alt_break_state);
kdb_alt_break(ch, &alt_break_state);
int kdb_alt_break(int, int *);