| /* |
| * Copyright (c) 2010, 2012-2013, 2016-2019 ARM Limited |
| * All rights reserved |
| * |
| * The license below extends only to copyright in the software and shall |
| * not be construed as granting a license to any other intellectual |
| * property including but not limited to intellectual property relating |
| * to a hardware implementation of the functionality of the software |
| * licensed hereunder. You may use the software subject to the license |
| * terms below provided that you ensure that this notice is replicated |
| * unmodified and in its entirety in all distributions of the software, |
| * modified or unmodified, in source code or in binary form. |
| * |
| * Copyright (c) 2003-2005 The Regents of The University of Michigan |
| * Copyright (c) 2007-2008 The Florida State University |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer; |
| * redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution; |
| * neither the name of the copyright holders nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #ifndef __ARM_FAULTS_HH__ |
| #define __ARM_FAULTS_HH__ |
| |
| #include "arch/arm/pagetable.hh" |
| #include "arch/arm/regs/misc.hh" |
| #include "arch/arm/types.hh" |
| #include "base/logging.hh" |
| #include "cpu/null_static_inst.hh" |
| #include "sim/faults.hh" |
| #include "sim/full_system.hh" |
| |
| namespace gem5 |
| { |
| |
| // The design of the "name" and "vect" functions is in sim/faults.hh |
| |
| namespace ArmISA |
| { |
| typedef Addr FaultOffset; |
| |
| class ArmStaticInst; |
| |
| class ArmFault : public FaultBase |
| { |
| protected: |
| ExtMachInst machInst; |
| uint32_t issRaw; |
| |
| // Helper variables for ARMv8 exception handling |
| bool bStep; // True if the Arm Faul exception is a software Step exception |
| bool from64; // True if the exception is generated from the AArch64 state |
| bool to64; // True if the exception is taken in AArch64 state |
| ExceptionLevel fromEL; // Source exception level |
| ExceptionLevel toEL; // Target exception level |
| OperatingMode fromMode; // Source operating mode (aarch32) |
| OperatingMode toMode; // Next operating mode (aarch32) |
| |
| // This variable is true if the above fault specific informations |
| // have been updated. This is to prevent that a client is using their |
| // un-updated default constructed value. |
| bool faultUpdated; |
| |
| bool hypRouted; // True if the fault has been routed to Hypervisor |
| bool span; // True if the fault is setting the PSTATE.PAN bit |
| |
| virtual Addr getVector(ThreadContext *tc); |
| Addr getVector64(ThreadContext *tc); |
| |
| public: |
| /// Generic fault source enums used to index into |
| /// {short/long/aarch64}DescFaultSources[] to get the actual encodings based |
| /// on the current register width state and the translation table format in |
| /// use |
| enum FaultSource |
| { |
| AlignmentFault = 0, |
| InstructionCacheMaintenance, // Short-desc. format only |
| SynchExtAbtOnTranslTableWalkLL, |
| SynchPtyErrOnTranslTableWalkLL = SynchExtAbtOnTranslTableWalkLL + 4, |
| TranslationLL = SynchPtyErrOnTranslTableWalkLL + 4, |
| AccessFlagLL = TranslationLL + 4, |
| DomainLL = AccessFlagLL + 4, |
| PermissionLL = DomainLL + 4, |
| DebugEvent = PermissionLL + 4, |
| SynchronousExternalAbort, |
| TLBConflictAbort, // Requires LPAE |
| SynchPtyErrOnMemoryAccess, |
| AsynchronousExternalAbort, |
| AsynchPtyErrOnMemoryAccess, |
| AddressSizeLL, // AArch64 only |
| |
| // Not real faults. These are faults to allow the translation function |
| // to inform the memory access function not to proceed for a prefetch |
| // that misses in the TLB or that targets an uncacheable address |
| PrefetchTLBMiss = AddressSizeLL + 4, |
| PrefetchUncacheable, |
| |
| NumFaultSources, |
| FaultSourceInvalid = 0xff |
| }; |
| |
| /// Encodings of the fault sources when the short-desc. translation table |
| /// format is in use (ARM ARM Issue C B3.13.3) |
| static uint8_t shortDescFaultSources[NumFaultSources]; |
| /// Encodings of the fault sources when the long-desc. translation table |
| /// format is in use (ARM ARM Issue C B3.13.3) |
| static uint8_t longDescFaultSources[NumFaultSources]; |
| /// Encodings of the fault sources in AArch64 state |
| static uint8_t aarch64FaultSources[NumFaultSources]; |
| |
| enum AnnotationIDs |
| { |
| S1PTW, // DataAbort, PrefetchAbort: Stage 1 Page Table Walk, |
| OVA, // DataAbort, PrefetchAbort: stage 1 Virtual Address for stage 2 faults |
| SAS, // DataAbort: Syndrome Access Size |
| SSE, // DataAbort: Syndrome Sign Extend |
| SRT, // DataAbort: Syndrome Register Transfer |
| CM, // DataAbort: Cache Maintenance/Address Translation Op |
| OFA, // DataAbort: Override fault Address. This is needed when |
| // the abort is triggered by a CMO. The faulting address is |
| // then the address specified in the register argument of the |
| // instruction and not the cacheline address (See FAR doc) |
| |
| // AArch64 only |
| SF, // DataAbort: width of the accessed register is SixtyFour |
| AR // DataAbort: Acquire/Release semantics |
| }; |
| |
| enum TranMethod |
| { |
| LpaeTran, |
| VmsaTran, |
| UnknownTran |
| }; |
| |
| enum DebugType |
| { |
| NODEBUG = 0, |
| BRKPOINT, |
| VECTORCATCH, |
| WPOINT_CM, |
| WPOINT_NOCM |
| }; |
| |
| struct FaultVals |
| { |
| const FaultName name; |
| |
| const FaultOffset offset; |
| |
| // Offsets used for exceptions taken in AArch64 state |
| const uint16_t currELTOffset; |
| const uint16_t currELHOffset; |
| const uint16_t lowerEL64Offset; |
| const uint16_t lowerEL32Offset; |
| |
| const OperatingMode nextMode; |
| |
| const uint8_t armPcOffset; |
| const uint8_t thumbPcOffset; |
| // The following two values are used in place of armPcOffset and |
| // thumbPcOffset when the exception return address is saved into ELR |
| // registers (exceptions taken in HYP mode or in AArch64 state) |
| const uint8_t armPcElrOffset; |
| const uint8_t thumbPcElrOffset; |
| |
| const bool hypTrappable; |
| const bool abortDisable; |
| const bool fiqDisable; |
| |
| // Exception class used to appropriately set the syndrome register |
| // (exceptions taken in HYP mode or in AArch64 state) |
| const ExceptionClass ec; |
| |
| FaultStat count; |
| FaultVals(const FaultName& name_, const FaultOffset& offset_, |
| const uint16_t& currELTOffset_, const uint16_t& currELHOffset_, |
| const uint16_t& lowerEL64Offset_, |
| const uint16_t& lowerEL32Offset_, |
| const OperatingMode& nextMode_, const uint8_t& armPcOffset_, |
| const uint8_t& thumbPcOffset_, const uint8_t& armPcElrOffset_, |
| const uint8_t& thumbPcElrOffset_, const bool& hypTrappable_, |
| const bool& abortDisable_, const bool& fiqDisable_, |
| const ExceptionClass& ec_) |
| : name(name_), offset(offset_), currELTOffset(currELTOffset_), |
| currELHOffset(currELHOffset_), lowerEL64Offset(lowerEL64Offset_), |
| lowerEL32Offset(lowerEL32Offset_), nextMode(nextMode_), |
| armPcOffset(armPcOffset_), thumbPcOffset(thumbPcOffset_), |
| armPcElrOffset(armPcElrOffset_), thumbPcElrOffset(thumbPcElrOffset_), |
| hypTrappable(hypTrappable_), abortDisable(abortDisable_), |
| fiqDisable(fiqDisable_), ec(ec_) {} |
| }; |
| |
| ArmFault(ExtMachInst _machInst = 0, uint32_t _iss = 0) : |
| machInst(_machInst), issRaw(_iss), bStep(false), from64(false), |
| to64(false), fromEL(EL0), toEL(EL0), fromMode(MODE_UNDEFINED), |
| faultUpdated(false), hypRouted(false), span(false) {} |
| |
| // Returns the actual syndrome register to use based on the target |
| // exception level |
| MiscRegIndex getSyndromeReg64() const; |
| // Returns the actual fault address register to use based on the target |
| // exception level |
| MiscRegIndex getFaultAddrReg64() const; |
| |
| void invoke(ThreadContext *tc, const StaticInstPtr &inst = |
| nullStaticInstPtr) override; |
| void invoke32(ThreadContext *tc, const StaticInstPtr &inst = |
| nullStaticInstPtr); |
| void invoke64(ThreadContext *tc, const StaticInstPtr &inst = |
| nullStaticInstPtr); |
| void update(ThreadContext *tc); |
| bool isResetSPSR(){ return bStep; } |
| |
| bool vectorCatch(ThreadContext *tc, const StaticInstPtr &inst); |
| |
| ArmStaticInst *instrAnnotate(const StaticInstPtr &inst); |
| virtual void annotate(AnnotationIDs id, uint64_t val) {} |
| virtual FaultStat& countStat() = 0; |
| virtual FaultOffset offset(ThreadContext *tc) = 0; |
| virtual FaultOffset offset64(ThreadContext *tc) = 0; |
| virtual OperatingMode nextMode() = 0; |
| virtual bool routeToMonitor(ThreadContext *tc) const = 0; |
| virtual bool routeToHyp(ThreadContext *tc) const { return false; } |
| virtual uint8_t armPcOffset(bool isHyp) = 0; |
| virtual uint8_t thumbPcOffset(bool isHyp) = 0; |
| virtual uint8_t armPcElrOffset() = 0; |
| virtual uint8_t thumbPcElrOffset() = 0; |
| virtual bool abortDisable(ThreadContext *tc) = 0; |
| virtual bool fiqDisable(ThreadContext *tc) = 0; |
| virtual ExceptionClass ec(ThreadContext *tc) const = 0; |
| virtual uint32_t vectorCatchFlag() const { return 0x0; } |
| virtual uint32_t iss() const = 0; |
| virtual bool isStage2() const { return false; } |
| virtual FSR getFsr(ThreadContext *tc) const { return 0; } |
| virtual void setSyndrome(ThreadContext *tc, MiscRegIndex syndrome_reg); |
| virtual bool getFaultVAddr(Addr &va) const { return false; } |
| OperatingMode getToMode() const { return toMode; } |
| }; |
| |
| template<typename T> |
| class ArmFaultVals : public ArmFault |
| { |
| protected: |
| static FaultVals vals; |
| |
| public: |
| ArmFaultVals<T>(ExtMachInst _machInst = 0, uint32_t _iss = 0) : |
| ArmFault(_machInst, _iss) {} |
| FaultName name() const override { return vals.name; } |
| FaultStat & countStat() override { return vals.count; } |
| FaultOffset offset(ThreadContext *tc) override; |
| |
| FaultOffset offset64(ThreadContext *tc) override; |
| |
| OperatingMode nextMode() override { return vals.nextMode; } |
| virtual bool routeToMonitor(ThreadContext *tc) const override { |
| return false; |
| } |
| uint8_t armPcOffset(bool isHyp) override { |
| return isHyp ? vals.armPcElrOffset |
| : vals.armPcOffset; |
| } |
| uint8_t thumbPcOffset(bool isHyp) override { |
| return isHyp ? vals.thumbPcElrOffset |
| : vals.thumbPcOffset; |
| } |
| uint8_t armPcElrOffset() override { return vals.armPcElrOffset; } |
| uint8_t thumbPcElrOffset() override { return vals.thumbPcElrOffset; } |
| bool abortDisable(ThreadContext* tc) override { return vals.abortDisable; } |
| bool fiqDisable(ThreadContext* tc) override { return vals.fiqDisable; } |
| ExceptionClass ec(ThreadContext *tc) const override { return vals.ec; } |
| uint32_t iss() const override { return issRaw; } |
| }; |
| |
| class Reset : public ArmFaultVals<Reset> |
| { |
| protected: |
| Addr getVector(ThreadContext *tc) override; |
| |
| public: |
| void invoke(ThreadContext *tc, const StaticInstPtr &inst = |
| nullStaticInstPtr) override; |
| }; |
| |
| class UndefinedInstruction : public ArmFaultVals<UndefinedInstruction> |
| { |
| protected: |
| bool unknown; |
| bool disabled; |
| ExceptionClass overrideEc; |
| const char *mnemonic; |
| |
| public: |
| UndefinedInstruction(ExtMachInst _machInst, |
| bool _unknown, |
| const char *_mnemonic = NULL, |
| bool _disabled = false) : |
| ArmFaultVals<UndefinedInstruction>(_machInst), |
| unknown(_unknown), disabled(_disabled), |
| overrideEc(EC_INVALID), mnemonic(_mnemonic) |
| {} |
| UndefinedInstruction(ExtMachInst _machInst, uint32_t _iss, |
| ExceptionClass _overrideEc, const char *_mnemonic = NULL) : |
| ArmFaultVals<UndefinedInstruction>(_machInst, _iss), |
| unknown(false), disabled(true), overrideEc(_overrideEc), |
| mnemonic(_mnemonic) |
| {} |
| |
| void invoke(ThreadContext *tc, const StaticInstPtr &inst = |
| nullStaticInstPtr) override; |
| bool routeToHyp(ThreadContext *tc) const override; |
| ExceptionClass ec(ThreadContext *tc) const override; |
| uint32_t iss() const override; |
| uint32_t vectorCatchFlag() const override { return 0x02000002; } |
| }; |
| |
| class SupervisorCall : public ArmFaultVals<SupervisorCall> |
| { |
| protected: |
| ExceptionClass overrideEc; |
| public: |
| SupervisorCall(ExtMachInst _machInst, uint32_t _iss, |
| ExceptionClass _overrideEc = EC_INVALID) : |
| ArmFaultVals<SupervisorCall>(_machInst, _iss), |
| overrideEc(_overrideEc) |
| { |
| bStep = true; |
| } |
| |
| void invoke(ThreadContext *tc, const StaticInstPtr &inst = |
| nullStaticInstPtr) override; |
| bool routeToHyp(ThreadContext *tc) const override; |
| ExceptionClass ec(ThreadContext *tc) const override; |
| uint32_t iss() const override; |
| uint32_t vectorCatchFlag() const override { return 0x04000404; } |
| }; |
| |
| class SecureMonitorCall : public ArmFaultVals<SecureMonitorCall> |
| { |
| public: |
| SecureMonitorCall(ExtMachInst _machInst) : |
| ArmFaultVals<SecureMonitorCall>(_machInst) |
| { |
| bStep = true; |
| } |
| |
| void invoke(ThreadContext *tc, const StaticInstPtr &inst = |
| nullStaticInstPtr) override; |
| ExceptionClass ec(ThreadContext *tc) const override; |
| uint32_t iss() const override; |
| uint32_t vectorCatchFlag() const override { return 0x00000400; } |
| }; |
| |
| class SupervisorTrap : public ArmFaultVals<SupervisorTrap> |
| { |
| protected: |
| ExtMachInst machInst; |
| ExceptionClass overrideEc; |
| |
| public: |
| SupervisorTrap(ExtMachInst _machInst, uint32_t _iss, |
| ExceptionClass _overrideEc = EC_INVALID) : |
| ArmFaultVals<SupervisorTrap>(_machInst, _iss), |
| overrideEc(_overrideEc) |
| {} |
| |
| bool routeToHyp(ThreadContext *tc) const override; |
| uint32_t iss() const override; |
| ExceptionClass ec(ThreadContext *tc) const override; |
| }; |
| |
| class SecureMonitorTrap : public ArmFaultVals<SecureMonitorTrap> |
| { |
| protected: |
| ExtMachInst machInst; |
| ExceptionClass overrideEc; |
| |
| public: |
| SecureMonitorTrap(ExtMachInst _machInst, uint32_t _iss, |
| ExceptionClass _overrideEc = EC_INVALID) : |
| ArmFaultVals<SecureMonitorTrap>(_machInst, _iss), |
| overrideEc(_overrideEc) |
| {} |
| |
| ExceptionClass ec(ThreadContext *tc) const override; |
| }; |
| |
| class HypervisorCall : public ArmFaultVals<HypervisorCall> |
| { |
| public: |
| HypervisorCall(ExtMachInst _machInst, uint32_t _imm); |
| |
| bool routeToHyp(ThreadContext *tc) const override; |
| bool routeToMonitor(ThreadContext *tc) const override; |
| ExceptionClass ec(ThreadContext *tc) const override; |
| uint32_t vectorCatchFlag() const override { return 0xFFFFFFFF; } |
| }; |
| |
| class HypervisorTrap : public ArmFaultVals<HypervisorTrap> |
| { |
| protected: |
| ExtMachInst machInst; |
| ExceptionClass overrideEc; |
| |
| public: |
| HypervisorTrap(ExtMachInst _machInst, uint32_t _iss, |
| ExceptionClass _overrideEc = EC_INVALID) : |
| ArmFaultVals<HypervisorTrap>(_machInst, _iss), |
| overrideEc(_overrideEc) |
| {} |
| |
| ExceptionClass ec(ThreadContext *tc) const override; |
| }; |
| |
| template <class T> |
| class AbortFault : public ArmFaultVals<T> |
| { |
| protected: |
| /** |
| * The virtual address the fault occured at. If 2 stages of |
| * translation are being used then this is the intermediate |
| * physical address that is the starting point for the second |
| * stage of translation. |
| */ |
| Addr faultAddr; |
| /** |
| * Original virtual address. If the fault was generated on the |
| * second stage of translation then this variable stores the |
| * virtual address used in the original stage 1 translation. |
| */ |
| Addr OVAddr; |
| bool write; |
| TlbEntry::DomainType domain; |
| uint8_t source; |
| uint8_t srcEncoded; |
| bool stage2; |
| bool s1ptw; |
| ArmFault::TranMethod tranMethod; |
| ArmFault::DebugType debugType; |
| |
| public: |
| AbortFault(Addr _faultAddr, bool _write, TlbEntry::DomainType _domain, |
| uint8_t _source, bool _stage2, |
| ArmFault::TranMethod _tranMethod = ArmFault::UnknownTran, |
| ArmFault::DebugType _debug = ArmFault::NODEBUG) : |
| faultAddr(_faultAddr), OVAddr(0), write(_write), |
| domain(_domain), source(_source), srcEncoded(0), |
| stage2(_stage2), s1ptw(false), tranMethod(_tranMethod), |
| debugType(_debug) |
| {} |
| |
| bool getFaultVAddr(Addr &va) const override; |
| |
| void invoke(ThreadContext *tc, const StaticInstPtr &inst = |
| nullStaticInstPtr) override; |
| |
| FSR getFsr(ThreadContext *tc) const override; |
| uint8_t getFaultStatusCode(ThreadContext *tc) const; |
| bool abortDisable(ThreadContext *tc) override; |
| uint32_t iss() const override; |
| bool isStage2() const override { return stage2; } |
| void annotate(ArmFault::AnnotationIDs id, uint64_t val) override; |
| void setSyndrome(ThreadContext *tc, MiscRegIndex syndrome_reg) override; |
| bool isMMUFault() const; |
| }; |
| |
| class PrefetchAbort : public AbortFault<PrefetchAbort> |
| { |
| public: |
| static const MiscRegIndex FsrIndex = MISCREG_IFSR; |
| static const MiscRegIndex FarIndex = MISCREG_IFAR; |
| static const MiscRegIndex HFarIndex = MISCREG_HIFAR; |
| |
| PrefetchAbort(Addr _addr, uint8_t _source, bool _stage2 = false, |
| ArmFault::TranMethod _tranMethod = ArmFault::UnknownTran, |
| ArmFault::DebugType _debug = ArmFault::NODEBUG) : |
| AbortFault<PrefetchAbort>(_addr, false, TlbEntry::DomainType::NoAccess, |
| _source, _stage2, _tranMethod, _debug) |
| {} |
| |
| ExceptionClass ec(ThreadContext *tc) const override; |
| // @todo: external aborts should be routed if SCR.EA == 1 |
| bool routeToMonitor(ThreadContext *tc) const override; |
| bool routeToHyp(ThreadContext *tc) const override; |
| uint32_t vectorCatchFlag() const override { return 0x08000808; } |
| }; |
| |
| class DataAbort : public AbortFault<DataAbort> |
| { |
| public: |
| static const MiscRegIndex FsrIndex = MISCREG_DFSR; |
| static const MiscRegIndex FarIndex = MISCREG_DFAR; |
| static const MiscRegIndex HFarIndex = MISCREG_HDFAR; |
| bool isv; |
| uint8_t sas; |
| uint8_t sse; |
| uint8_t srt; |
| uint8_t cm; |
| |
| // AArch64 only |
| bool sf; |
| bool ar; |
| |
| DataAbort(Addr _addr, TlbEntry::DomainType _domain, bool _write, uint8_t _source, |
| bool _stage2=false, |
| ArmFault::TranMethod _tranMethod=ArmFault::UnknownTran, |
| ArmFault::DebugType _debug_type=ArmFault::NODEBUG) : |
| AbortFault<DataAbort>(_addr, _write, _domain, _source, _stage2, |
| _tranMethod, _debug_type), |
| isv(false), sas (0), sse(0), srt(0), cm(0), sf(false), ar(false) |
| {} |
| |
| ExceptionClass ec(ThreadContext *tc) const override; |
| // @todo: external aborts should be routed if SCR.EA == 1 |
| bool routeToMonitor(ThreadContext *tc) const override; |
| bool routeToHyp(ThreadContext *tc) const override; |
| uint32_t iss() const override; |
| void annotate(AnnotationIDs id, uint64_t val) override; |
| uint32_t vectorCatchFlag() const override { return 0x10001010; } |
| }; |
| |
| class VirtualDataAbort : public AbortFault<VirtualDataAbort> |
| { |
| public: |
| static const MiscRegIndex FsrIndex = MISCREG_DFSR; |
| static const MiscRegIndex FarIndex = MISCREG_DFAR; |
| static const MiscRegIndex HFarIndex = MISCREG_HDFAR; |
| |
| VirtualDataAbort(Addr _addr, TlbEntry::DomainType _domain, bool _write, |
| uint8_t _source) : |
| AbortFault<VirtualDataAbort>(_addr, _write, _domain, _source, false) |
| {} |
| |
| void invoke(ThreadContext *tc, const StaticInstPtr &inst) override; |
| }; |
| |
| class Interrupt : public ArmFaultVals<Interrupt> |
| { |
| public: |
| bool routeToMonitor(ThreadContext *tc) const override; |
| bool routeToHyp(ThreadContext *tc) const override; |
| bool abortDisable(ThreadContext *tc) override; |
| uint32_t vectorCatchFlag() const override { return 0x40004040; } |
| }; |
| |
| class VirtualInterrupt : public ArmFaultVals<VirtualInterrupt> |
| { |
| public: |
| VirtualInterrupt(); |
| }; |
| |
| class FastInterrupt : public ArmFaultVals<FastInterrupt> |
| { |
| public: |
| bool routeToMonitor(ThreadContext *tc) const override; |
| bool routeToHyp(ThreadContext *tc) const override; |
| bool abortDisable(ThreadContext *tc) override; |
| bool fiqDisable(ThreadContext *tc) override; |
| uint32_t vectorCatchFlag() const override { return 0x80008080; } |
| }; |
| |
| class VirtualFastInterrupt : public ArmFaultVals<VirtualFastInterrupt> |
| { |
| public: |
| VirtualFastInterrupt(); |
| }; |
| |
| /// PC alignment fault (AArch64 only) |
| class PCAlignmentFault : public ArmFaultVals<PCAlignmentFault> |
| { |
| protected: |
| /// The unaligned value of the PC |
| Addr faultPC; |
| public: |
| PCAlignmentFault(Addr _faultPC) : faultPC(_faultPC) |
| {} |
| void invoke(ThreadContext *tc, const StaticInstPtr &inst = |
| nullStaticInstPtr) override; |
| bool routeToHyp(ThreadContext *tc) const override; |
| }; |
| |
| /// Stack pointer alignment fault (AArch64 only) |
| class SPAlignmentFault : public ArmFaultVals<SPAlignmentFault> |
| { |
| public: |
| SPAlignmentFault(); |
| bool routeToHyp(ThreadContext *tc) const override; |
| }; |
| |
| /// System error (AArch64 only) |
| class SystemError : public ArmFaultVals<SystemError> |
| { |
| public: |
| SystemError(); |
| void invoke(ThreadContext *tc, const StaticInstPtr &inst = |
| nullStaticInstPtr) override; |
| bool routeToMonitor(ThreadContext *tc) const override; |
| bool routeToHyp(ThreadContext *tc) const override; |
| }; |
| |
| /// System error (AArch64 only) |
| class SoftwareBreakpoint : public ArmFaultVals<SoftwareBreakpoint> |
| { |
| public: |
| SoftwareBreakpoint(ExtMachInst _mach_inst, uint32_t _iss); |
| |
| bool routeToHyp(ThreadContext *tc) const override; |
| ExceptionClass ec(ThreadContext *tc) const override; |
| }; |
| |
| class HardwareBreakpoint : public ArmFaultVals<HardwareBreakpoint> |
| { |
| private: |
| Addr vAddr; |
| public: |
| void invoke(ThreadContext *tc, const StaticInstPtr &inst = |
| nullStaticInstPtr) override; |
| HardwareBreakpoint(Addr _vaddr, uint32_t _iss); |
| bool routeToHyp(ThreadContext *tc) const override; |
| ExceptionClass ec(ThreadContext *tc) const override; |
| }; |
| |
| class Watchpoint : public ArmFaultVals<Watchpoint> |
| { |
| private: |
| Addr vAddr; |
| bool write; |
| bool cm; |
| |
| public: |
| Watchpoint(ExtMachInst _mach_inst, Addr _vaddr, bool _write, bool _cm); |
| void invoke(ThreadContext *tc, const StaticInstPtr &inst = |
| nullStaticInstPtr) override; |
| bool routeToHyp(ThreadContext *tc) const override; |
| uint32_t iss() const override; |
| ExceptionClass ec(ThreadContext *tc) const override; |
| void annotate(AnnotationIDs id, uint64_t val) override; |
| }; |
| |
| class SoftwareStepFault : public ArmFaultVals<SoftwareStepFault> |
| { |
| private: |
| bool isldx; |
| bool stepped; |
| |
| public: |
| SoftwareStepFault(ExtMachInst _mach_inst, bool is_ldx, bool stepped); |
| bool routeToHyp(ThreadContext *tc) const override; |
| uint32_t iss() const override; |
| ExceptionClass ec(ThreadContext *tc) const override; |
| }; |
| |
| // A fault that flushes the pipe, excluding the faulting instructions |
| class ArmSev : public ArmFaultVals<ArmSev> |
| { |
| public: |
| ArmSev () {} |
| void invoke(ThreadContext *tc, const StaticInstPtr &inst = |
| nullStaticInstPtr) override; |
| }; |
| |
| /// Illegal Instruction Set State fault (AArch64 only) |
| class IllegalInstSetStateFault : public ArmFaultVals<IllegalInstSetStateFault> |
| { |
| public: |
| IllegalInstSetStateFault(); |
| |
| bool routeToHyp(ThreadContext *tc) const override; |
| }; |
| |
| /* |
| * Explicitly declare template static member variables to avoid warnings |
| * in some clang versions |
| */ |
| template<> ArmFault::FaultVals ArmFaultVals<Reset>::vals; |
| template<> ArmFault::FaultVals ArmFaultVals<UndefinedInstruction>::vals; |
| template<> ArmFault::FaultVals ArmFaultVals<SupervisorCall>::vals; |
| template<> ArmFault::FaultVals ArmFaultVals<SecureMonitorCall>::vals; |
| template<> ArmFault::FaultVals ArmFaultVals<HypervisorCall>::vals; |
| template<> ArmFault::FaultVals ArmFaultVals<PrefetchAbort>::vals; |
| template<> ArmFault::FaultVals ArmFaultVals<DataAbort>::vals; |
| template<> ArmFault::FaultVals ArmFaultVals<VirtualDataAbort>::vals; |
| template<> ArmFault::FaultVals ArmFaultVals<HypervisorTrap>::vals; |
| template<> ArmFault::FaultVals ArmFaultVals<Interrupt>::vals; |
| template<> ArmFault::FaultVals ArmFaultVals<VirtualInterrupt>::vals; |
| template<> ArmFault::FaultVals ArmFaultVals<FastInterrupt>::vals; |
| template<> ArmFault::FaultVals ArmFaultVals<VirtualFastInterrupt>::vals; |
| template<> ArmFault::FaultVals ArmFaultVals<IllegalInstSetStateFault>::vals; |
| template<> ArmFault::FaultVals ArmFaultVals<SupervisorTrap>::vals; |
| template<> ArmFault::FaultVals ArmFaultVals<SecureMonitorTrap>::vals; |
| template<> ArmFault::FaultVals ArmFaultVals<PCAlignmentFault>::vals; |
| template<> ArmFault::FaultVals ArmFaultVals<SPAlignmentFault>::vals; |
| template<> ArmFault::FaultVals ArmFaultVals<SystemError>::vals; |
| template<> ArmFault::FaultVals ArmFaultVals<SoftwareBreakpoint>::vals; |
| template<> ArmFault::FaultVals ArmFaultVals<HardwareBreakpoint>::vals; |
| template<> ArmFault::FaultVals ArmFaultVals<Watchpoint>::vals; |
| template<> ArmFault::FaultVals ArmFaultVals<SoftwareStepFault>::vals; |
| template<> ArmFault::FaultVals ArmFaultVals<ArmSev>::vals; |
| |
| /** |
| * Returns true if the fault passed as a first argument was triggered |
| * by a memory access, false otherwise. |
| * If true it is storing the faulting address in the va argument |
| * |
| * @param fault generated fault |
| * @param va function will modify this passed-by-reference parameter |
| * with the correct faulting virtual address |
| * @return true if va contains a valid value, false otherwise |
| */ |
| bool getFaultVAddr(Fault fault, Addr &va); |
| |
| } // namespace ArmISA |
| } // namespace gem5 |
| |
| #endif // __ARM_FAULTS_HH__ |
