faults.hh revision 5114
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;
725114Sgblack@eecs.umich.edu
735114Sgblack@eecs.umich.edu        X86FaultBase(const char * _faultName, const char * _mnem) :
745114Sgblack@eecs.umich.edu            faultName(_faultName), mnem(_mnem)
755114Sgblack@eecs.umich.edu        {
765114Sgblack@eecs.umich.edu        }
775114Sgblack@eecs.umich.edu
784729Sgblack@eecs.umich.edu        const char * name() const
794365Sgblack@eecs.umich.edu        {
805114Sgblack@eecs.umich.edu            return faultName;
814365Sgblack@eecs.umich.edu        }
824365Sgblack@eecs.umich.edu
835114Sgblack@eecs.umich.edu        virtual bool isBenign()
845114Sgblack@eecs.umich.edu        {
855114Sgblack@eecs.umich.edu            return true;
865114Sgblack@eecs.umich.edu        }
875114Sgblack@eecs.umich.edu
885114Sgblack@eecs.umich.edu        virtual const char * mnemonic() const
895114Sgblack@eecs.umich.edu        {
905114Sgblack@eecs.umich.edu            return mnem;
915114Sgblack@eecs.umich.edu        }
925114Sgblack@eecs.umich.edu    };
935114Sgblack@eecs.umich.edu
945114Sgblack@eecs.umich.edu    // Base class for x86 faults which behave as if the underlying instruction
955114Sgblack@eecs.umich.edu    // didn't happen.
965114Sgblack@eecs.umich.edu    class X86Fault : public X86FaultBase
975114Sgblack@eecs.umich.edu    {
985114Sgblack@eecs.umich.edu      protected:
995114Sgblack@eecs.umich.edu        X86Fault(const char * name, const char * mnem) :
1005114Sgblack@eecs.umich.edu            X86FaultBase(name, mnem)
1015114Sgblack@eecs.umich.edu        {}
1025114Sgblack@eecs.umich.edu    };
1035114Sgblack@eecs.umich.edu
1045114Sgblack@eecs.umich.edu    // Base class for x86 traps which behave as if the underlying instruction
1055114Sgblack@eecs.umich.edu    // completed.
1065114Sgblack@eecs.umich.edu    class X86Trap : public X86FaultBase
1075114Sgblack@eecs.umich.edu    {
1085114Sgblack@eecs.umich.edu      protected:
1095114Sgblack@eecs.umich.edu        X86Trap(const char * name, const char * mnem) :
1105114Sgblack@eecs.umich.edu            X86FaultBase(name, mnem)
1115114Sgblack@eecs.umich.edu        {}
1125114Sgblack@eecs.umich.edu
1135114Sgblack@eecs.umich.edu#if FULL_SYSTEM
1144135Sgblack@eecs.umich.edu        void invoke(ThreadContext * tc)
1154135Sgblack@eecs.umich.edu        {
1164135Sgblack@eecs.umich.edu            panic("X86 faults are not implemented!");
1174135Sgblack@eecs.umich.edu        }
1185114Sgblack@eecs.umich.edu#endif
1195114Sgblack@eecs.umich.edu    };
1205114Sgblack@eecs.umich.edu
1215114Sgblack@eecs.umich.edu    // Base class for x86 aborts which seem to be catastrophic failures.
1225114Sgblack@eecs.umich.edu    class X86Abort : public X86FaultBase
1235114Sgblack@eecs.umich.edu    {
1245114Sgblack@eecs.umich.edu      protected:
1255114Sgblack@eecs.umich.edu        X86Abort(const char * name, const char * mnem) :
1265114Sgblack@eecs.umich.edu            X86FaultBase(name, mnem)
1275114Sgblack@eecs.umich.edu        {}
1285114Sgblack@eecs.umich.edu
1295114Sgblack@eecs.umich.edu#if FULL_SYSTEM
1305114Sgblack@eecs.umich.edu        void invoke(ThreadContext * tc)
1315114Sgblack@eecs.umich.edu        {
1325114Sgblack@eecs.umich.edu            panic("X86 faults are not implemented!");
1335114Sgblack@eecs.umich.edu        }
1345114Sgblack@eecs.umich.edu#endif
1355114Sgblack@eecs.umich.edu    };
1365114Sgblack@eecs.umich.edu
1375114Sgblack@eecs.umich.edu    // Base class for x86 interrupts.
1385114Sgblack@eecs.umich.edu    class X86Interrupt : public X86FaultBase
1395114Sgblack@eecs.umich.edu    {
1405114Sgblack@eecs.umich.edu      protected:
1415114Sgblack@eecs.umich.edu        X86Interrupt(const char * name, const char * mnem) :
1425114Sgblack@eecs.umich.edu            X86FaultBase(name, mnem)
1435114Sgblack@eecs.umich.edu        {}
1445114Sgblack@eecs.umich.edu
1455114Sgblack@eecs.umich.edu#if FULL_SYSTEM
1465114Sgblack@eecs.umich.edu        void invoke(ThreadContext * tc)
1475114Sgblack@eecs.umich.edu        {
1485114Sgblack@eecs.umich.edu            panic("X86 faults are not implemented!");
1495114Sgblack@eecs.umich.edu        }
1505114Sgblack@eecs.umich.edu#endif
1514135Sgblack@eecs.umich.edu    };
1524150Sgblack@eecs.umich.edu
1534365Sgblack@eecs.umich.edu    class UnimpInstFault : public FaultBase
1544365Sgblack@eecs.umich.edu    {
1554365Sgblack@eecs.umich.edu      public:
1564729Sgblack@eecs.umich.edu        const char * name() const
1574365Sgblack@eecs.umich.edu        {
1584365Sgblack@eecs.umich.edu            return "unimplemented_micro";
1594365Sgblack@eecs.umich.edu        }
1604365Sgblack@eecs.umich.edu
1614365Sgblack@eecs.umich.edu        void invoke(ThreadContext * tc)
1624365Sgblack@eecs.umich.edu        {
1634365Sgblack@eecs.umich.edu            panic("Unimplemented instruction!");
1644365Sgblack@eecs.umich.edu        }
1654365Sgblack@eecs.umich.edu    };
1664365Sgblack@eecs.umich.edu
1674150Sgblack@eecs.umich.edu    static inline Fault genMachineCheckFault()
1684150Sgblack@eecs.umich.edu    {
1694150Sgblack@eecs.umich.edu        panic("Machine check fault not implemented in x86!\n");
1704150Sgblack@eecs.umich.edu    }
1715114Sgblack@eecs.umich.edu
1725114Sgblack@eecs.umich.edu    // Below is a summary of the interrupt/exception information in the
1735114Sgblack@eecs.umich.edu    // architecture manuals.
1745114Sgblack@eecs.umich.edu
1755114Sgblack@eecs.umich.edu    // Class  |  Type    | vector |               Cause                 | mnem
1765114Sgblack@eecs.umich.edu    //------------------------------------------------------------------------
1775114Sgblack@eecs.umich.edu    //Contrib   Fault     0         Divide-by-Zero-Error                  #DE
1785114Sgblack@eecs.umich.edu    //Benign    Either    1         Debug                                 #DB
1795114Sgblack@eecs.umich.edu    //Benign    Interrupt 2         Non-Maskable-Interrupt                #NMI
1805114Sgblack@eecs.umich.edu    //Benign    Trap      3         Breakpoint                            #BP
1815114Sgblack@eecs.umich.edu    //Benign    Trap      4         Overflow                              #OF
1825114Sgblack@eecs.umich.edu    //Benign    Fault     5         Bound-Range                           #BR
1835114Sgblack@eecs.umich.edu    //Benign    Fault     6         Invalid-Opcode                        #UD
1845114Sgblack@eecs.umich.edu    //Benign    Fault     7         Device-Not-Available                  #NM
1855114Sgblack@eecs.umich.edu    //Benign    Abort     8         Double-Fault                          #DF
1865114Sgblack@eecs.umich.edu    //                    9         Coprocessor-Segment-Overrun
1875114Sgblack@eecs.umich.edu    //Contrib   Fault     10        Invalid-TSS                           #TS
1885114Sgblack@eecs.umich.edu    //Contrib   Fault     11        Segment-Not-Present                   #NP
1895114Sgblack@eecs.umich.edu    //Contrib   Fault     12        Stack                                 #SS
1905114Sgblack@eecs.umich.edu    //Contrib   Fault     13        General-Protection                    #GP
1915114Sgblack@eecs.umich.edu    //Either    Fault     14        Page-Fault                            #PF
1925114Sgblack@eecs.umich.edu    //                    15        Reserved
1935114Sgblack@eecs.umich.edu    //Benign    Fault     16        x87 Floating-Point Exception Pending  #MF
1945114Sgblack@eecs.umich.edu    //Benign    Fault     17        Alignment-Check                       #AC
1955114Sgblack@eecs.umich.edu    //Benign    Abort     18        Machine-Check                         #MC
1965114Sgblack@eecs.umich.edu    //Benign    Fault     19        SIMD Floating-Point                   #XF
1975114Sgblack@eecs.umich.edu    //                    20-29     Reserved
1985114Sgblack@eecs.umich.edu    //Contrib   ?         30        Security Exception                    #SX
1995114Sgblack@eecs.umich.edu    //                    31        Reserved
2005114Sgblack@eecs.umich.edu    //Benign    Interrupt 0-255     External Interrupts                   #INTR
2015114Sgblack@eecs.umich.edu    //Benign    Interrupt 0-255     Software Interrupts                   INTn
2025114Sgblack@eecs.umich.edu
2035114Sgblack@eecs.umich.edu    class DivideByZero : public X86Fault
2045114Sgblack@eecs.umich.edu    {
2055114Sgblack@eecs.umich.edu      public:
2065114Sgblack@eecs.umich.edu        DivideByZero() :
2075114Sgblack@eecs.umich.edu            X86Fault("Divide-by-Zero-Error", "#DE")
2085114Sgblack@eecs.umich.edu        {}
2095114Sgblack@eecs.umich.edu    };
2105114Sgblack@eecs.umich.edu
2115114Sgblack@eecs.umich.edu    class DebugException : public X86FaultBase
2125114Sgblack@eecs.umich.edu    {
2135114Sgblack@eecs.umich.edu      public:
2145114Sgblack@eecs.umich.edu        DebugException() :
2155114Sgblack@eecs.umich.edu            X86FaultBase("Debug", "#DB")
2165114Sgblack@eecs.umich.edu        {}
2175114Sgblack@eecs.umich.edu    };
2185114Sgblack@eecs.umich.edu
2195114Sgblack@eecs.umich.edu    class NonMaskableInterrupt : public X86Interrupt
2205114Sgblack@eecs.umich.edu    {
2215114Sgblack@eecs.umich.edu      public:
2225114Sgblack@eecs.umich.edu        NonMaskableInterrupt() :
2235114Sgblack@eecs.umich.edu            X86Interrupt("Non-Maskable-Interrupt", "#NMI")
2245114Sgblack@eecs.umich.edu        {}
2255114Sgblack@eecs.umich.edu    };
2265114Sgblack@eecs.umich.edu
2275114Sgblack@eecs.umich.edu    class Breakpoint : public X86Trap
2285114Sgblack@eecs.umich.edu    {
2295114Sgblack@eecs.umich.edu      public:
2305114Sgblack@eecs.umich.edu        Breakpoint() :
2315114Sgblack@eecs.umich.edu            X86Trap("Breakpoint", "#BP")
2325114Sgblack@eecs.umich.edu        {}
2335114Sgblack@eecs.umich.edu    };
2345114Sgblack@eecs.umich.edu
2355114Sgblack@eecs.umich.edu    class OverflowTrap : public X86Trap
2365114Sgblack@eecs.umich.edu    {
2375114Sgblack@eecs.umich.edu      public:
2385114Sgblack@eecs.umich.edu        OverflowTrap() :
2395114Sgblack@eecs.umich.edu            X86Trap("Overflow", "#OF")
2405114Sgblack@eecs.umich.edu        {}
2415114Sgblack@eecs.umich.edu    };
2425114Sgblack@eecs.umich.edu
2435114Sgblack@eecs.umich.edu    class BoundRange : public X86Fault
2445114Sgblack@eecs.umich.edu    {
2455114Sgblack@eecs.umich.edu      public:
2465114Sgblack@eecs.umich.edu        BoundRange() :
2475114Sgblack@eecs.umich.edu            X86Fault("Bound-Range", "#BR")
2485114Sgblack@eecs.umich.edu        {}
2495114Sgblack@eecs.umich.edu    };
2505114Sgblack@eecs.umich.edu
2515114Sgblack@eecs.umich.edu    class InvalidOpcode : public X86Fault
2525114Sgblack@eecs.umich.edu    {
2535114Sgblack@eecs.umich.edu      public:
2545114Sgblack@eecs.umich.edu        InvalidOpcode() :
2555114Sgblack@eecs.umich.edu            X86Fault("Invalid-Opcode", "#UD")
2565114Sgblack@eecs.umich.edu        {}
2575114Sgblack@eecs.umich.edu    };
2585114Sgblack@eecs.umich.edu
2595114Sgblack@eecs.umich.edu    class DeviceNotAvailable : public X86Fault
2605114Sgblack@eecs.umich.edu    {
2615114Sgblack@eecs.umich.edu      public:
2625114Sgblack@eecs.umich.edu        DeviceNotAvailable() :
2635114Sgblack@eecs.umich.edu            X86Fault("Device-Not-Available", "#NM")
2645114Sgblack@eecs.umich.edu        {}
2655114Sgblack@eecs.umich.edu    };
2665114Sgblack@eecs.umich.edu
2675114Sgblack@eecs.umich.edu    class DoubleFault : public X86Abort
2685114Sgblack@eecs.umich.edu    {
2695114Sgblack@eecs.umich.edu      public:
2705114Sgblack@eecs.umich.edu        DoubleFault() :
2715114Sgblack@eecs.umich.edu            X86Abort("Double-Fault", "#DF")
2725114Sgblack@eecs.umich.edu        {}
2735114Sgblack@eecs.umich.edu    };
2745114Sgblack@eecs.umich.edu
2755114Sgblack@eecs.umich.edu    class InvalidTSS : public X86Fault
2765114Sgblack@eecs.umich.edu    {
2775114Sgblack@eecs.umich.edu      public:
2785114Sgblack@eecs.umich.edu        InvalidTSS() :
2795114Sgblack@eecs.umich.edu            X86Fault("Invalid-TSS", "#TS")
2805114Sgblack@eecs.umich.edu        {}
2815114Sgblack@eecs.umich.edu    };
2825114Sgblack@eecs.umich.edu
2835114Sgblack@eecs.umich.edu    class SegmentNotPresent : public X86Fault
2845114Sgblack@eecs.umich.edu    {
2855114Sgblack@eecs.umich.edu      public:
2865114Sgblack@eecs.umich.edu        SegmentNotPresent() :
2875114Sgblack@eecs.umich.edu            X86Fault("Segment-Not-Present", "#NP")
2885114Sgblack@eecs.umich.edu        {}
2895114Sgblack@eecs.umich.edu    };
2905114Sgblack@eecs.umich.edu
2915114Sgblack@eecs.umich.edu    class StackFault : public X86Fault
2925114Sgblack@eecs.umich.edu    {
2935114Sgblack@eecs.umich.edu      public:
2945114Sgblack@eecs.umich.edu        StackFault() :
2955114Sgblack@eecs.umich.edu            X86Fault("Stack", "#SS")
2965114Sgblack@eecs.umich.edu        {}
2975114Sgblack@eecs.umich.edu    };
2985114Sgblack@eecs.umich.edu
2995114Sgblack@eecs.umich.edu    class GeneralProtection : public X86Fault
3005114Sgblack@eecs.umich.edu    {
3015114Sgblack@eecs.umich.edu      public:
3025114Sgblack@eecs.umich.edu        GeneralProtection() :
3035114Sgblack@eecs.umich.edu            X86Fault("General-Protection", "#GP")
3045114Sgblack@eecs.umich.edu        {}
3055114Sgblack@eecs.umich.edu    };
3065114Sgblack@eecs.umich.edu
3075114Sgblack@eecs.umich.edu    class PageFault : public X86Fault
3085114Sgblack@eecs.umich.edu    {
3095114Sgblack@eecs.umich.edu      public:
3105114Sgblack@eecs.umich.edu        PageFault() :
3115114Sgblack@eecs.umich.edu            X86Fault("Page-Fault", "#PF")
3125114Sgblack@eecs.umich.edu        {}
3135114Sgblack@eecs.umich.edu    };
3145114Sgblack@eecs.umich.edu
3155114Sgblack@eecs.umich.edu    class X87FpExceptionPending : public X86Fault
3165114Sgblack@eecs.umich.edu    {
3175114Sgblack@eecs.umich.edu      public:
3185114Sgblack@eecs.umich.edu        X87FpExceptionPending() :
3195114Sgblack@eecs.umich.edu            X86Fault("x87 Floating-Point Exception Pending", "#MF")
3205114Sgblack@eecs.umich.edu        {}
3215114Sgblack@eecs.umich.edu    };
3225114Sgblack@eecs.umich.edu
3235114Sgblack@eecs.umich.edu    class AlignmentCheck : X86Fault
3245114Sgblack@eecs.umich.edu    {
3255114Sgblack@eecs.umich.edu      public:
3265114Sgblack@eecs.umich.edu        AlignmentCheck() :
3275114Sgblack@eecs.umich.edu            X86Fault("Alignment-Check", "#AC")
3285114Sgblack@eecs.umich.edu        {}
3295114Sgblack@eecs.umich.edu    };
3305114Sgblack@eecs.umich.edu
3315114Sgblack@eecs.umich.edu    class MachineCheck : X86Abort
3325114Sgblack@eecs.umich.edu    {
3335114Sgblack@eecs.umich.edu      public:
3345114Sgblack@eecs.umich.edu        MachineCheck() :
3355114Sgblack@eecs.umich.edu            X86Abort("Machine-Check", "#MC")
3365114Sgblack@eecs.umich.edu        {}
3375114Sgblack@eecs.umich.edu    };
3385114Sgblack@eecs.umich.edu
3395114Sgblack@eecs.umich.edu    class SIMDFloatingPointFault : X86Fault
3405114Sgblack@eecs.umich.edu    {
3415114Sgblack@eecs.umich.edu      public:
3425114Sgblack@eecs.umich.edu        SIMDFloatingPointFault() :
3435114Sgblack@eecs.umich.edu            X86Fault("SIMD Floating-Point", "#XF")
3445114Sgblack@eecs.umich.edu        {}
3455114Sgblack@eecs.umich.edu    };
3465114Sgblack@eecs.umich.edu
3475114Sgblack@eecs.umich.edu    class SecurityException : X86FaultBase
3485114Sgblack@eecs.umich.edu    {
3495114Sgblack@eecs.umich.edu      public:
3505114Sgblack@eecs.umich.edu        SecurityException() :
3515114Sgblack@eecs.umich.edu            X86FaultBase("Security Exception", "#SX")
3525114Sgblack@eecs.umich.edu        {}
3535114Sgblack@eecs.umich.edu    };
3545114Sgblack@eecs.umich.edu
3555114Sgblack@eecs.umich.edu    class ExternalInterrupt : X86Interrupt
3565114Sgblack@eecs.umich.edu    {
3575114Sgblack@eecs.umich.edu      public:
3585114Sgblack@eecs.umich.edu        ExternalInterrupt() :
3595114Sgblack@eecs.umich.edu            X86Interrupt("External Interrupt", "#INTR")
3605114Sgblack@eecs.umich.edu        {}
3615114Sgblack@eecs.umich.edu    };
3625114Sgblack@eecs.umich.edu
3635114Sgblack@eecs.umich.edu    class SoftwareInterrupt : X86Interrupt
3645114Sgblack@eecs.umich.edu    {
3655114Sgblack@eecs.umich.edu      public:
3665114Sgblack@eecs.umich.edu        SoftwareInterrupt() :
3675114Sgblack@eecs.umich.edu            X86Interrupt("Software Interrupt", "INTn")
3685114Sgblack@eecs.umich.edu        {}
3695114Sgblack@eecs.umich.edu    };
3705114Sgblack@eecs.umich.edu
3715114Sgblack@eecs.umich.edu    // These faults aren't part of the ISA definition. They trigger filling
3725114Sgblack@eecs.umich.edu    // the tlb on a miss and are to take the place of a hardware table walker.
3735114Sgblack@eecs.umich.edu    class FakeITLBFault : public X86Fault
3745114Sgblack@eecs.umich.edu    {
3755114Sgblack@eecs.umich.edu      public:
3765114Sgblack@eecs.umich.edu        FakeITLBFault() :
3775114Sgblack@eecs.umich.edu            X86Fault("fake instruction tlb fault", "itlb")
3785114Sgblack@eecs.umich.edu        {}
3795114Sgblack@eecs.umich.edu    };
3805114Sgblack@eecs.umich.edu
3815114Sgblack@eecs.umich.edu    class FakeDTLBFault : public X86Fault
3825114Sgblack@eecs.umich.edu    {
3835114Sgblack@eecs.umich.edu      public:
3845114Sgblack@eecs.umich.edu        FakeDTLBFault() :
3855114Sgblack@eecs.umich.edu            X86Fault("fake data tlb fault", "dtlb")
3865114Sgblack@eecs.umich.edu        {}
3875114Sgblack@eecs.umich.edu    };
3884120Sgblack@eecs.umich.edu};
3894120Sgblack@eecs.umich.edu
3904120Sgblack@eecs.umich.edu#endif // __ARCH_X86_FAULTS_HH__
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