faults.hh revision 5139
14120Sgblack@eecs.umich.edu/*
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544120Sgblack@eecs.umich.edu *
554120Sgblack@eecs.umich.edu * Authors: Gabe Black
564120Sgblack@eecs.umich.edu */
574120Sgblack@eecs.umich.edu
584120Sgblack@eecs.umich.edu#ifndef __ARCH_X86_FAULTS_HH__
594120Sgblack@eecs.umich.edu#define __ARCH_X86_FAULTS_HH__
604120Sgblack@eecs.umich.edu
614139Sgblack@eecs.umich.edu#include "base/misc.hh"
624135Sgblack@eecs.umich.edu#include "sim/faults.hh"
634120Sgblack@eecs.umich.edu
644120Sgblack@eecs.umich.edunamespace X86ISA
654120Sgblack@eecs.umich.edu{
665114Sgblack@eecs.umich.edu    // Base class for all x86 "faults" where faults is in the m5 sense
675114Sgblack@eecs.umich.edu    class X86FaultBase : public FaultBase
684135Sgblack@eecs.umich.edu    {
694365Sgblack@eecs.umich.edu      protected:
705114Sgblack@eecs.umich.edu        const char * faultName;
715114Sgblack@eecs.umich.edu        const char * mnem;
725139Sgblack@eecs.umich.edu        uint64_t errorCode;
735114Sgblack@eecs.umich.edu
745139Sgblack@eecs.umich.edu        X86FaultBase(const char * _faultName, const char * _mnem,
755139Sgblack@eecs.umich.edu                uint64_t _errorCode = 0) :
765139Sgblack@eecs.umich.edu            faultName(_faultName), mnem(_mnem), errorCode(_errorCode)
775114Sgblack@eecs.umich.edu        {
785114Sgblack@eecs.umich.edu        }
795114Sgblack@eecs.umich.edu
804729Sgblack@eecs.umich.edu        const char * name() const
814365Sgblack@eecs.umich.edu        {
825114Sgblack@eecs.umich.edu            return faultName;
834365Sgblack@eecs.umich.edu        }
844365Sgblack@eecs.umich.edu
855114Sgblack@eecs.umich.edu        virtual bool isBenign()
865114Sgblack@eecs.umich.edu        {
875114Sgblack@eecs.umich.edu            return true;
885114Sgblack@eecs.umich.edu        }
895114Sgblack@eecs.umich.edu
905114Sgblack@eecs.umich.edu        virtual const char * mnemonic() const
915114Sgblack@eecs.umich.edu        {
925114Sgblack@eecs.umich.edu            return mnem;
935114Sgblack@eecs.umich.edu        }
945114Sgblack@eecs.umich.edu    };
955114Sgblack@eecs.umich.edu
965114Sgblack@eecs.umich.edu    // Base class for x86 faults which behave as if the underlying instruction
975114Sgblack@eecs.umich.edu    // didn't happen.
985114Sgblack@eecs.umich.edu    class X86Fault : public X86FaultBase
995114Sgblack@eecs.umich.edu    {
1005114Sgblack@eecs.umich.edu      protected:
1015139Sgblack@eecs.umich.edu        X86Fault(const char * name, const char * mnem,
1025139Sgblack@eecs.umich.edu                uint64_t _errorCode = 0) :
1035139Sgblack@eecs.umich.edu            X86FaultBase(name, mnem, _errorCode)
1045114Sgblack@eecs.umich.edu        {}
1055114Sgblack@eecs.umich.edu    };
1065114Sgblack@eecs.umich.edu
1075114Sgblack@eecs.umich.edu    // Base class for x86 traps which behave as if the underlying instruction
1085114Sgblack@eecs.umich.edu    // completed.
1095114Sgblack@eecs.umich.edu    class X86Trap : public X86FaultBase
1105114Sgblack@eecs.umich.edu    {
1115114Sgblack@eecs.umich.edu      protected:
1125139Sgblack@eecs.umich.edu        X86Trap(const char * name, const char * mnem,
1135139Sgblack@eecs.umich.edu                uint64_t _errorCode = 0) :
1145139Sgblack@eecs.umich.edu            X86FaultBase(name, mnem, _errorCode)
1155114Sgblack@eecs.umich.edu        {}
1165114Sgblack@eecs.umich.edu
1175114Sgblack@eecs.umich.edu#if FULL_SYSTEM
1185124Sgblack@eecs.umich.edu        void invoke(ThreadContext * tc);
1195114Sgblack@eecs.umich.edu#endif
1205114Sgblack@eecs.umich.edu    };
1215114Sgblack@eecs.umich.edu
1225114Sgblack@eecs.umich.edu    // Base class for x86 aborts which seem to be catastrophic failures.
1235114Sgblack@eecs.umich.edu    class X86Abort : public X86FaultBase
1245114Sgblack@eecs.umich.edu    {
1255114Sgblack@eecs.umich.edu      protected:
1265139Sgblack@eecs.umich.edu        X86Abort(const char * name, const char * mnem,
1275139Sgblack@eecs.umich.edu                uint64_t _errorCode = 0) :
1285139Sgblack@eecs.umich.edu            X86FaultBase(name, mnem, _errorCode)
1295114Sgblack@eecs.umich.edu        {}
1305114Sgblack@eecs.umich.edu
1315114Sgblack@eecs.umich.edu#if FULL_SYSTEM
1325124Sgblack@eecs.umich.edu        void invoke(ThreadContext * tc);
1335114Sgblack@eecs.umich.edu#endif
1345114Sgblack@eecs.umich.edu    };
1355114Sgblack@eecs.umich.edu
1365114Sgblack@eecs.umich.edu    // Base class for x86 interrupts.
1375114Sgblack@eecs.umich.edu    class X86Interrupt : public X86FaultBase
1385114Sgblack@eecs.umich.edu    {
1395114Sgblack@eecs.umich.edu      protected:
1405139Sgblack@eecs.umich.edu        X86Interrupt(const char * name, const char * mnem,
1415139Sgblack@eecs.umich.edu                uint64_t _errorCode = 0) :
1425139Sgblack@eecs.umich.edu            X86FaultBase(name, mnem, _errorCode)
1435114Sgblack@eecs.umich.edu        {}
1445114Sgblack@eecs.umich.edu
1455114Sgblack@eecs.umich.edu#if FULL_SYSTEM
1465124Sgblack@eecs.umich.edu        void invoke(ThreadContext * tc);
1475114Sgblack@eecs.umich.edu#endif
1484135Sgblack@eecs.umich.edu    };
1494150Sgblack@eecs.umich.edu
1504365Sgblack@eecs.umich.edu    class UnimpInstFault : public FaultBase
1514365Sgblack@eecs.umich.edu    {
1524365Sgblack@eecs.umich.edu      public:
1534729Sgblack@eecs.umich.edu        const char * name() const
1544365Sgblack@eecs.umich.edu        {
1554365Sgblack@eecs.umich.edu            return "unimplemented_micro";
1564365Sgblack@eecs.umich.edu        }
1574365Sgblack@eecs.umich.edu
1584365Sgblack@eecs.umich.edu        void invoke(ThreadContext * tc)
1594365Sgblack@eecs.umich.edu        {
1604365Sgblack@eecs.umich.edu            panic("Unimplemented instruction!");
1614365Sgblack@eecs.umich.edu        }
1624365Sgblack@eecs.umich.edu    };
1634365Sgblack@eecs.umich.edu
1644150Sgblack@eecs.umich.edu    static inline Fault genMachineCheckFault()
1654150Sgblack@eecs.umich.edu    {
1664150Sgblack@eecs.umich.edu        panic("Machine check fault not implemented in x86!\n");
1674150Sgblack@eecs.umich.edu    }
1685114Sgblack@eecs.umich.edu
1695114Sgblack@eecs.umich.edu    // Below is a summary of the interrupt/exception information in the
1705114Sgblack@eecs.umich.edu    // architecture manuals.
1715114Sgblack@eecs.umich.edu
1725114Sgblack@eecs.umich.edu    // Class  |  Type    | vector |               Cause                 | mnem
1735114Sgblack@eecs.umich.edu    //------------------------------------------------------------------------
1745114Sgblack@eecs.umich.edu    //Contrib   Fault     0         Divide-by-Zero-Error                  #DE
1755114Sgblack@eecs.umich.edu    //Benign    Either    1         Debug                                 #DB
1765114Sgblack@eecs.umich.edu    //Benign    Interrupt 2         Non-Maskable-Interrupt                #NMI
1775114Sgblack@eecs.umich.edu    //Benign    Trap      3         Breakpoint                            #BP
1785114Sgblack@eecs.umich.edu    //Benign    Trap      4         Overflow                              #OF
1795114Sgblack@eecs.umich.edu    //Benign    Fault     5         Bound-Range                           #BR
1805114Sgblack@eecs.umich.edu    //Benign    Fault     6         Invalid-Opcode                        #UD
1815114Sgblack@eecs.umich.edu    //Benign    Fault     7         Device-Not-Available                  #NM
1825114Sgblack@eecs.umich.edu    //Benign    Abort     8         Double-Fault                          #DF
1835114Sgblack@eecs.umich.edu    //                    9         Coprocessor-Segment-Overrun
1845114Sgblack@eecs.umich.edu    //Contrib   Fault     10        Invalid-TSS                           #TS
1855114Sgblack@eecs.umich.edu    //Contrib   Fault     11        Segment-Not-Present                   #NP
1865114Sgblack@eecs.umich.edu    //Contrib   Fault     12        Stack                                 #SS
1875114Sgblack@eecs.umich.edu    //Contrib   Fault     13        General-Protection                    #GP
1885114Sgblack@eecs.umich.edu    //Either    Fault     14        Page-Fault                            #PF
1895114Sgblack@eecs.umich.edu    //                    15        Reserved
1905114Sgblack@eecs.umich.edu    //Benign    Fault     16        x87 Floating-Point Exception Pending  #MF
1915114Sgblack@eecs.umich.edu    //Benign    Fault     17        Alignment-Check                       #AC
1925114Sgblack@eecs.umich.edu    //Benign    Abort     18        Machine-Check                         #MC
1935114Sgblack@eecs.umich.edu    //Benign    Fault     19        SIMD Floating-Point                   #XF
1945114Sgblack@eecs.umich.edu    //                    20-29     Reserved
1955114Sgblack@eecs.umich.edu    //Contrib   ?         30        Security Exception                    #SX
1965114Sgblack@eecs.umich.edu    //                    31        Reserved
1975114Sgblack@eecs.umich.edu    //Benign    Interrupt 0-255     External Interrupts                   #INTR
1985114Sgblack@eecs.umich.edu    //Benign    Interrupt 0-255     Software Interrupts                   INTn
1995114Sgblack@eecs.umich.edu
2005114Sgblack@eecs.umich.edu    class DivideByZero : public X86Fault
2015114Sgblack@eecs.umich.edu    {
2025114Sgblack@eecs.umich.edu      public:
2035114Sgblack@eecs.umich.edu        DivideByZero() :
2045114Sgblack@eecs.umich.edu            X86Fault("Divide-by-Zero-Error", "#DE")
2055114Sgblack@eecs.umich.edu        {}
2065114Sgblack@eecs.umich.edu    };
2075114Sgblack@eecs.umich.edu
2085114Sgblack@eecs.umich.edu    class DebugException : public X86FaultBase
2095114Sgblack@eecs.umich.edu    {
2105114Sgblack@eecs.umich.edu      public:
2115114Sgblack@eecs.umich.edu        DebugException() :
2125114Sgblack@eecs.umich.edu            X86FaultBase("Debug", "#DB")
2135114Sgblack@eecs.umich.edu        {}
2145114Sgblack@eecs.umich.edu    };
2155114Sgblack@eecs.umich.edu
2165114Sgblack@eecs.umich.edu    class NonMaskableInterrupt : public X86Interrupt
2175114Sgblack@eecs.umich.edu    {
2185114Sgblack@eecs.umich.edu      public:
2195114Sgblack@eecs.umich.edu        NonMaskableInterrupt() :
2205114Sgblack@eecs.umich.edu            X86Interrupt("Non-Maskable-Interrupt", "#NMI")
2215114Sgblack@eecs.umich.edu        {}
2225114Sgblack@eecs.umich.edu    };
2235114Sgblack@eecs.umich.edu
2245114Sgblack@eecs.umich.edu    class Breakpoint : public X86Trap
2255114Sgblack@eecs.umich.edu    {
2265114Sgblack@eecs.umich.edu      public:
2275114Sgblack@eecs.umich.edu        Breakpoint() :
2285114Sgblack@eecs.umich.edu            X86Trap("Breakpoint", "#BP")
2295114Sgblack@eecs.umich.edu        {}
2305114Sgblack@eecs.umich.edu    };
2315114Sgblack@eecs.umich.edu
2325114Sgblack@eecs.umich.edu    class OverflowTrap : public X86Trap
2335114Sgblack@eecs.umich.edu    {
2345114Sgblack@eecs.umich.edu      public:
2355114Sgblack@eecs.umich.edu        OverflowTrap() :
2365114Sgblack@eecs.umich.edu            X86Trap("Overflow", "#OF")
2375114Sgblack@eecs.umich.edu        {}
2385114Sgblack@eecs.umich.edu    };
2395114Sgblack@eecs.umich.edu
2405114Sgblack@eecs.umich.edu    class BoundRange : public X86Fault
2415114Sgblack@eecs.umich.edu    {
2425114Sgblack@eecs.umich.edu      public:
2435114Sgblack@eecs.umich.edu        BoundRange() :
2445114Sgblack@eecs.umich.edu            X86Fault("Bound-Range", "#BR")
2455114Sgblack@eecs.umich.edu        {}
2465114Sgblack@eecs.umich.edu    };
2475114Sgblack@eecs.umich.edu
2485114Sgblack@eecs.umich.edu    class InvalidOpcode : public X86Fault
2495114Sgblack@eecs.umich.edu    {
2505114Sgblack@eecs.umich.edu      public:
2515114Sgblack@eecs.umich.edu        InvalidOpcode() :
2525114Sgblack@eecs.umich.edu            X86Fault("Invalid-Opcode", "#UD")
2535114Sgblack@eecs.umich.edu        {}
2545114Sgblack@eecs.umich.edu    };
2555114Sgblack@eecs.umich.edu
2565114Sgblack@eecs.umich.edu    class DeviceNotAvailable : public X86Fault
2575114Sgblack@eecs.umich.edu    {
2585114Sgblack@eecs.umich.edu      public:
2595114Sgblack@eecs.umich.edu        DeviceNotAvailable() :
2605114Sgblack@eecs.umich.edu            X86Fault("Device-Not-Available", "#NM")
2615114Sgblack@eecs.umich.edu        {}
2625114Sgblack@eecs.umich.edu    };
2635114Sgblack@eecs.umich.edu
2645114Sgblack@eecs.umich.edu    class DoubleFault : public X86Abort
2655114Sgblack@eecs.umich.edu    {
2665114Sgblack@eecs.umich.edu      public:
2675114Sgblack@eecs.umich.edu        DoubleFault() :
2685114Sgblack@eecs.umich.edu            X86Abort("Double-Fault", "#DF")
2695114Sgblack@eecs.umich.edu        {}
2705114Sgblack@eecs.umich.edu    };
2715114Sgblack@eecs.umich.edu
2725114Sgblack@eecs.umich.edu    class InvalidTSS : public X86Fault
2735114Sgblack@eecs.umich.edu    {
2745114Sgblack@eecs.umich.edu      public:
2755114Sgblack@eecs.umich.edu        InvalidTSS() :
2765114Sgblack@eecs.umich.edu            X86Fault("Invalid-TSS", "#TS")
2775114Sgblack@eecs.umich.edu        {}
2785114Sgblack@eecs.umich.edu    };
2795114Sgblack@eecs.umich.edu
2805114Sgblack@eecs.umich.edu    class SegmentNotPresent : public X86Fault
2815114Sgblack@eecs.umich.edu    {
2825114Sgblack@eecs.umich.edu      public:
2835114Sgblack@eecs.umich.edu        SegmentNotPresent() :
2845114Sgblack@eecs.umich.edu            X86Fault("Segment-Not-Present", "#NP")
2855114Sgblack@eecs.umich.edu        {}
2865114Sgblack@eecs.umich.edu    };
2875114Sgblack@eecs.umich.edu
2885114Sgblack@eecs.umich.edu    class StackFault : public X86Fault
2895114Sgblack@eecs.umich.edu    {
2905114Sgblack@eecs.umich.edu      public:
2915114Sgblack@eecs.umich.edu        StackFault() :
2925114Sgblack@eecs.umich.edu            X86Fault("Stack", "#SS")
2935114Sgblack@eecs.umich.edu        {}
2945114Sgblack@eecs.umich.edu    };
2955114Sgblack@eecs.umich.edu
2965114Sgblack@eecs.umich.edu    class GeneralProtection : public X86Fault
2975114Sgblack@eecs.umich.edu    {
2985114Sgblack@eecs.umich.edu      public:
2995139Sgblack@eecs.umich.edu        GeneralProtection(uint64_t _errorCode) :
3005139Sgblack@eecs.umich.edu            X86Fault("General-Protection", "#GP", _errorCode)
3015114Sgblack@eecs.umich.edu        {}
3025114Sgblack@eecs.umich.edu    };
3035114Sgblack@eecs.umich.edu
3045114Sgblack@eecs.umich.edu    class PageFault : public X86Fault
3055114Sgblack@eecs.umich.edu    {
3065114Sgblack@eecs.umich.edu      public:
3075114Sgblack@eecs.umich.edu        PageFault() :
3085114Sgblack@eecs.umich.edu            X86Fault("Page-Fault", "#PF")
3095114Sgblack@eecs.umich.edu        {}
3105114Sgblack@eecs.umich.edu    };
3115114Sgblack@eecs.umich.edu
3125114Sgblack@eecs.umich.edu    class X87FpExceptionPending : public X86Fault
3135114Sgblack@eecs.umich.edu    {
3145114Sgblack@eecs.umich.edu      public:
3155114Sgblack@eecs.umich.edu        X87FpExceptionPending() :
3165114Sgblack@eecs.umich.edu            X86Fault("x87 Floating-Point Exception Pending", "#MF")
3175114Sgblack@eecs.umich.edu        {}
3185114Sgblack@eecs.umich.edu    };
3195114Sgblack@eecs.umich.edu
3205114Sgblack@eecs.umich.edu    class AlignmentCheck : X86Fault
3215114Sgblack@eecs.umich.edu    {
3225114Sgblack@eecs.umich.edu      public:
3235114Sgblack@eecs.umich.edu        AlignmentCheck() :
3245114Sgblack@eecs.umich.edu            X86Fault("Alignment-Check", "#AC")
3255114Sgblack@eecs.umich.edu        {}
3265114Sgblack@eecs.umich.edu    };
3275114Sgblack@eecs.umich.edu
3285114Sgblack@eecs.umich.edu    class MachineCheck : X86Abort
3295114Sgblack@eecs.umich.edu    {
3305114Sgblack@eecs.umich.edu      public:
3315114Sgblack@eecs.umich.edu        MachineCheck() :
3325114Sgblack@eecs.umich.edu            X86Abort("Machine-Check", "#MC")
3335114Sgblack@eecs.umich.edu        {}
3345114Sgblack@eecs.umich.edu    };
3355114Sgblack@eecs.umich.edu
3365114Sgblack@eecs.umich.edu    class SIMDFloatingPointFault : X86Fault
3375114Sgblack@eecs.umich.edu    {
3385114Sgblack@eecs.umich.edu      public:
3395114Sgblack@eecs.umich.edu        SIMDFloatingPointFault() :
3405114Sgblack@eecs.umich.edu            X86Fault("SIMD Floating-Point", "#XF")
3415114Sgblack@eecs.umich.edu        {}
3425114Sgblack@eecs.umich.edu    };
3435114Sgblack@eecs.umich.edu
3445114Sgblack@eecs.umich.edu    class SecurityException : X86FaultBase
3455114Sgblack@eecs.umich.edu    {
3465114Sgblack@eecs.umich.edu      public:
3475114Sgblack@eecs.umich.edu        SecurityException() :
3485114Sgblack@eecs.umich.edu            X86FaultBase("Security Exception", "#SX")
3495114Sgblack@eecs.umich.edu        {}
3505114Sgblack@eecs.umich.edu    };
3515114Sgblack@eecs.umich.edu
3525114Sgblack@eecs.umich.edu    class ExternalInterrupt : X86Interrupt
3535114Sgblack@eecs.umich.edu    {
3545114Sgblack@eecs.umich.edu      public:
3555114Sgblack@eecs.umich.edu        ExternalInterrupt() :
3565114Sgblack@eecs.umich.edu            X86Interrupt("External Interrupt", "#INTR")
3575114Sgblack@eecs.umich.edu        {}
3585114Sgblack@eecs.umich.edu    };
3595114Sgblack@eecs.umich.edu
3605114Sgblack@eecs.umich.edu    class SoftwareInterrupt : X86Interrupt
3615114Sgblack@eecs.umich.edu    {
3625114Sgblack@eecs.umich.edu      public:
3635114Sgblack@eecs.umich.edu        SoftwareInterrupt() :
3645114Sgblack@eecs.umich.edu            X86Interrupt("Software Interrupt", "INTn")
3655114Sgblack@eecs.umich.edu        {}
3665114Sgblack@eecs.umich.edu    };
3675114Sgblack@eecs.umich.edu
3685114Sgblack@eecs.umich.edu    // These faults aren't part of the ISA definition. They trigger filling
3695114Sgblack@eecs.umich.edu    // the tlb on a miss and are to take the place of a hardware table walker.
3705114Sgblack@eecs.umich.edu    class FakeITLBFault : public X86Fault
3715114Sgblack@eecs.umich.edu    {
3725124Sgblack@eecs.umich.edu#if !FULL_SYSTEM
3735124Sgblack@eecs.umich.edu      protected:
3745124Sgblack@eecs.umich.edu        Addr vaddr;
3755124Sgblack@eecs.umich.edu      public:
3765124Sgblack@eecs.umich.edu        FakeITLBFault(Addr _vaddr) :
3775124Sgblack@eecs.umich.edu            X86Fault("fake instruction tlb fault", "itlb"),
3785124Sgblack@eecs.umich.edu            vaddr(_vaddr)
3795124Sgblack@eecs.umich.edu#else
3805114Sgblack@eecs.umich.edu      public:
3815114Sgblack@eecs.umich.edu        FakeITLBFault() :
3825114Sgblack@eecs.umich.edu            X86Fault("fake instruction tlb fault", "itlb")
3835124Sgblack@eecs.umich.edu#endif
3845114Sgblack@eecs.umich.edu        {}
3855124Sgblack@eecs.umich.edu
3865124Sgblack@eecs.umich.edu#if !FULL_SYSTEM
3875124Sgblack@eecs.umich.edu        void invoke(ThreadContext * tc);
3885124Sgblack@eecs.umich.edu#endif
3895114Sgblack@eecs.umich.edu    };
3905114Sgblack@eecs.umich.edu
3915114Sgblack@eecs.umich.edu    class FakeDTLBFault : public X86Fault
3925114Sgblack@eecs.umich.edu    {
3935124Sgblack@eecs.umich.edu#if !FULL_SYSTEM
3945124Sgblack@eecs.umich.edu      protected:
3955124Sgblack@eecs.umich.edu        Addr vaddr;
3965124Sgblack@eecs.umich.edu      public:
3975124Sgblack@eecs.umich.edu        FakeDTLBFault(Addr _vaddr) :
3985124Sgblack@eecs.umich.edu            X86Fault("fake data tlb fault", "dtlb"),
3995124Sgblack@eecs.umich.edu            vaddr(_vaddr)
4005124Sgblack@eecs.umich.edu#else
4015114Sgblack@eecs.umich.edu      public:
4025114Sgblack@eecs.umich.edu        FakeDTLBFault() :
4035114Sgblack@eecs.umich.edu            X86Fault("fake data tlb fault", "dtlb")
4045124Sgblack@eecs.umich.edu#endif
4055114Sgblack@eecs.umich.edu        {}
4065124Sgblack@eecs.umich.edu
4075124Sgblack@eecs.umich.edu#if !FULL_SYSTEM
4085124Sgblack@eecs.umich.edu        void invoke(ThreadContext * tc);
4095124Sgblack@eecs.umich.edu#endif
4105114Sgblack@eecs.umich.edu    };
4114120Sgblack@eecs.umich.edu};
4124120Sgblack@eecs.umich.edu
4134120Sgblack@eecs.umich.edu#endif // __ARCH_X86_FAULTS_HH__
414