ST0_IEC
status = (status & ~(ST0_KUP | ST0_IEP | ST0_IEC)) |
((status & (ST0_KUC | ST0_IEC)) << 2);
if (regs->cp0_status & ST0_IEC)
write_c0_status((ST0_ISC|ST0_SWC|flags)&~ST0_IEC);
write_c0_status((ST0_ISC|flags)&~ST0_IEC);
write_c0_status((ca_flags|flags)&~ST0_IEC);
write_c0_status((ca_flags|flags)&~ST0_IEC);