{
// Blank everything. 0 might not be an appropriate value for some things,
// but it is for most.
- memset(regVal, 0, NumMiscRegs * sizeof(MiscReg));
+ memset(regVal, 0, NumMiscRegs * sizeof(RegVal));
+
+ // If some state should be non-zero after a reset, set those values here.
+ regVal[MISCREG_CR0] = 0x0000000060000010ULL;
+
+ regVal[MISCREG_MTRRCAP] = 0x0508;
+
+ regVal[MISCREG_MCG_CAP] = 0x104;
+
+ regVal[MISCREG_PAT] = 0x0007040600070406ULL;
+
+ regVal[MISCREG_SYSCFG] = 0x20601;
+
+ regVal[MISCREG_TOP_MEM] = 0x4000000;
+
regVal[MISCREG_DR6] = (mask(8) << 4) | (mask(16) << 16);
regVal[MISCREG_DR7] = 1 << 10;
+
+ LocalApicBase lApicBase = 0;
+ lApicBase.base = 0xFEE00000 >> 12;
+ lApicBase.enable = 1;
+ // The "bsp" bit will be set when this register is read, since then we'll
+ // have a ThreadContext to check the contextId from.
+ regVal[MISCREG_APIC_BASE] = lApicBase;
}
ISA::ISA(Params *p)
return dynamic_cast<const Params *>(_params);
}
-MiscReg
+RegVal
ISA::readMiscRegNoEffect(int miscReg) const
{
// Make sure we're not dealing with an illegal control register.
return regVal[miscReg];
}
-MiscReg
+RegVal
ISA::readMiscReg(int miscReg, ThreadContext * tc)
{
if (miscReg == MISCREG_TSC) {
}
if (miscReg == MISCREG_FSW) {
- MiscReg fsw = regVal[MISCREG_FSW];
- MiscReg top = regVal[MISCREG_X87_TOP];
+ RegVal fsw = regVal[MISCREG_FSW];
+ RegVal top = regVal[MISCREG_X87_TOP];
return insertBits(fsw, 13, 11, top);
}
+ if (miscReg == MISCREG_APIC_BASE) {
+ LocalApicBase base = regVal[MISCREG_APIC_BASE];
+ base.bsp = (tc->contextId() == 0);
+ return base;
+ }
+
return readMiscRegNoEffect(miscReg);
}
void
-ISA::setMiscRegNoEffect(int miscReg, MiscReg val)
+ISA::setMiscRegNoEffect(int miscReg, RegVal val)
{
// Make sure we're not dealing with an illegal control register.
// Instructions should filter out these indexes, and nothing else should
}
void
-ISA::setMiscReg(int miscReg, MiscReg val, ThreadContext * tc)
+ISA::setMiscReg(int miscReg, RegVal val, ThreadContext * tc)
{
- MiscReg newVal = val;
+ RegVal newVal = val;
switch(miscReg)
{
case MISCREG_CR0: