diff options
| -rw-r--r-- | src/arch/x86/faults.cc | 20 | ||||
| -rw-r--r-- | src/arch/x86/faults.hh | 10 |
2 files changed, 30 insertions, 0 deletions
diff --git a/src/arch/x86/faults.cc b/src/arch/x86/faults.cc index e2a4d8ca2..bef7e4414 100644 --- a/src/arch/x86/faults.cc +++ b/src/arch/x86/faults.cc @@ -282,6 +282,26 @@ namespace X86ISA tc->setNextMicroPC(romMicroPC(entry) + 1); } + void + StartupInterrupt::invoke(ThreadContext *tc) + { + DPRINTF(Faults, "Startup interrupt with vector %#x.\n", vector); + HandyM5Reg m5Reg = tc->readMiscReg(MISCREG_M5_REG); + if (m5Reg.mode != LegacyMode || m5Reg.submode != RealMode) { + panic("Startup IPI recived outside of real mode. " + "Don't know what to do."); + } + + tc->setMiscReg(MISCREG_CS, vector << 8); + tc->setMiscReg(MISCREG_CS_BASE, vector << 12); + tc->setMiscReg(MISCREG_CS_EFF_BASE, vector << 12); + // This has the base value pre-added. + tc->setMiscReg(MISCREG_CS_LIMIT, 0xffff); + + tc->setPC(tc->readMiscReg(MISCREG_CS_BASE)); + tc->setNextPC(tc->readPC() + sizeof(MachInst)); + } + #endif } // namespace X86ISA diff --git a/src/arch/x86/faults.hh b/src/arch/x86/faults.hh index 54b92bd47..0e573f051 100644 --- a/src/arch/x86/faults.hh +++ b/src/arch/x86/faults.hh @@ -418,6 +418,16 @@ namespace X86ISA void invoke(ThreadContext * tc); }; + class StartupInterrupt : public X86Interrupt + { + public: + StartupInterrupt(uint8_t _vector) : + X86Interrupt("Startup Interrupt", "#SIPI", _vector) + {} + + void invoke(ThreadContext * tc); + }; + class SoftwareInterrupt : public X86Interrupt { public: |