+ // Figure out what submode we're in.
+ if (m5reg.mode == LongMode) {
+ SegAttr csAttr = regVal[MISCREG_CS_ATTR];
+ if (csAttr.longMode)
+ m5reg.submode = SixtyFourBitMode;
+ else
+ m5reg.submode = CompatabilityMode;
+ } else {
+ if (newCR0.pe) {
+ RFLAGS rflags = regVal[MISCREG_RFLAGS];
+ if (rflags.vm)
+ m5reg.submode = Virtual8086Mode;
+ else
+ m5reg.submode = ProtectedMode;
+ } else {
+ m5reg.submode = RealMode;
+ }
+ }
+ regVal[MISCREG_M5_REG] = m5reg;