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| author | Gabe Black <gblack@eecs.umich.edu> | 2008-03-06 20:37:28 -0500 |
|---|---|---|
| committer | Gabe Black <gblack@eecs.umich.edu> | 2008-03-06 20:37:28 -0500 |
| commit | a245b0eedfac7ba25656661868fbf3bd8eaf1ccd (patch) | |
| tree | 569e4407394134c09b2947687a68d57e37c1dc21 | |
| parent | 66aaabf4ae05508ea8fa223c84b7a78aa754c7f9 (diff) | |
| download | gem5-a245b0eedfac7ba25656661868fbf3bd8eaf1ccd.tar.xz | |
X86: Refine the local APIC.
--HG--
extra : convert_revision : 2789c54ed555fed2f2a333fcc7dc6454f294ebf2
| -rw-r--r-- | src/arch/x86/miscregfile.cc | 59 | ||||
| -rw-r--r-- | src/arch/x86/miscregs.hh | 2 |
2 files changed, 22 insertions, 39 deletions
diff --git a/src/arch/x86/miscregfile.cc b/src/arch/x86/miscregfile.cc index 3b4dc3407..5d75af0cf 100644 --- a/src/arch/x86/miscregfile.cc +++ b/src/arch/x86/miscregfile.cc @@ -156,12 +156,8 @@ MiscReg MiscRegFile::readReg(int miscReg, ThreadContext * tc) case MISCREG_APIC_DESTINATION_FORMAT: panic("Local APIC Destination Format register unimplemented.\n"); break; - case MISCREG_APIC_SPURIOUS_INTERRUPT_VECTOR: - panic("Local APIC Spurious Interrupt Vector" - " register unimplemented.\n"); - break; case MISCREG_APIC_ERROR_STATUS: - panic("Local APIC Error Status register unimplemented.\n"); + regVal[MISCREG_APIC_INTERNAL_STATE] &= ~ULL(0x1); break; case MISCREG_APIC_INTERRUPT_COMMAND_LOW: panic("Local APIC Interrupt Command low" @@ -171,25 +167,6 @@ MiscReg MiscRegFile::readReg(int miscReg, ThreadContext * tc) panic("Local APIC Interrupt Command high" " register unimplemented.\n"); break; - case MISCREG_APIC_LVT_TIMER: - panic("Local APIC LVT Timer register unimplemented.\n"); - break; - case MISCREG_APIC_LVT_THERMAL_SENSOR: - panic("Local APIC LVT Thermal Sensor register unimplemented.\n"); - break; - case MISCREG_APIC_LVT_PERFORMANCE_MONITORING_COUNTERS: - panic("Local APIC LVT Performance Monitoring Counters" - " register unimplemented.\n"); - break; - case MISCREG_APIC_LVT_LINT0: - panic("Local APIC LVT LINT0 register unimplemented.\n"); - break; - case MISCREG_APIC_LVT_LINT1: - panic("Local APIC LVT LINT1 register unimplemented.\n"); - break; - case MISCREG_APIC_LVT_ERROR: - panic("Local APIC LVT Error register unimplemented.\n"); - break; case MISCREG_APIC_INITIAL_COUNT: panic("Local APIC Initial Count register unimplemented.\n"); break; @@ -261,11 +238,22 @@ void MiscRegFile::setReg(int miscReg, panic("Local APIC Destination Format register unimplemented.\n"); break; case MISCREG_APIC_SPURIOUS_INTERRUPT_VECTOR: - panic("Local APIC Spurious Interrupt Vector" - " register unimplemented.\n"); + regVal[MISCREG_APIC_INTERNAL_STATE] &= ~ULL(1 << 1); + regVal[MISCREG_APIC_INTERNAL_STATE] |= val & (1 << 8); + if (val & (1 << 9)) + warn("Focus processor checking not implemented.\n"); break; case MISCREG_APIC_ERROR_STATUS: - panic("Local APIC Error Status register unimplemented.\n"); + { + if (regVal[MISCREG_APIC_INTERNAL_STATE] & 0x1) { + regVal[MISCREG_APIC_INTERNAL_STATE] &= ~ULL(0x1); + newVal = 0; + } else { + regVal[MISCREG_APIC_INTERNAL_STATE] |= ULL(0x1); + return; + } + + } break; case MISCREG_APIC_INTERRUPT_COMMAND_LOW: panic("Local APIC Interrupt Command low" @@ -276,23 +264,16 @@ void MiscRegFile::setReg(int miscReg, " register unimplemented.\n"); break; case MISCREG_APIC_LVT_TIMER: - panic("Local APIC LVT Timer register unimplemented.\n"); - break; case MISCREG_APIC_LVT_THERMAL_SENSOR: - panic("Local APIC LVT Thermal Sensor register unimplemented.\n"); - break; case MISCREG_APIC_LVT_PERFORMANCE_MONITORING_COUNTERS: - panic("Local APIC LVT Performance Monitoring Counters" - " register unimplemented.\n"); - break; case MISCREG_APIC_LVT_LINT0: - panic("Local APIC LVT LINT0 register unimplemented.\n"); - break; case MISCREG_APIC_LVT_LINT1: - panic("Local APIC LVT LINT1 register unimplemented.\n"); - break; case MISCREG_APIC_LVT_ERROR: - panic("Local APIC LVT Error register unimplemented.\n"); + { + uint64_t readOnlyMask = (1 << 12) | (1 << 14); + newVal = (val & ~readOnlyMask) | + (regVal[miscReg] & readOnlyMask); + } break; case MISCREG_APIC_INITIAL_COUNT: panic("Local APIC Initial Count register unimplemented.\n"); diff --git a/src/arch/x86/miscregs.hh b/src/arch/x86/miscregs.hh index d1016d2a9..15ea0d77b 100644 --- a/src/arch/x86/miscregs.hh +++ b/src/arch/x86/miscregs.hh @@ -373,6 +373,8 @@ namespace X86ISA MISCREG_APIC_DIVIDE_COUNT, MISCREG_APIC_END = MISCREG_APIC_DIVIDE_COUNT, + MISCREG_APIC_INTERNAL_STATE, + // "Fake" MSRs for internally implemented devices MISCREG_PCI_CONFIG_ADDRESS, |