_REG_CCR
uc.uc_mcontext.__gregs[_REG_CCR] = sc->sc_tstate;
gr[_REG_CCR] = (tf->tf_tstate & TSTATE_CCR) >> TSTATE_CCR_SHIFT;
((gr[_REG_CCR] << TSTATE_CCR_SHIFT) & TSTATE_CCR) |