CR0_EM
{ CR0_EM, "EM ", "em " },
lcr0(creg0 & ~(CR0_EM|CR0_TS));
lcr0(creg0 & ~(CR0_EM|CR0_TS));
lcr0(rcr0() & ~(CR0_EM|CR0_TS));
lcr0(rcr0() | (CR0_EM|CR0_TS));
lcr0(rcr0() & ~(CR0_EM|CR0_TS));