/*
 * Copyright N) 2007 MIPS Technologies, Inc.  All Rights Reserved
 *
 * This software is part of the M5 simulator.
 *
 * THIS IS A LEGAL AGREEMENT.  BY DOWNLOADING, USING, COPYING, CREATING
 * DERIVATIVE WORKS, AND/OR DISTRIBUTING THIS SOFTWARE YOU ARE AGREEING
 * TO THESE TERMS AND CONDITIONS.
 *
 * Permission is granted to use, copy, create derivative works and
 * distribute this software and such derivative works for any purpose,
 * so long as (1) the copyright notice above, this grant of permission,
 * and the disclaimer below appear in all copies and derivative works
 * made, (2) the copyright notice above is augmented as appropriate to
 * reflect the addition of any new copyrightable work in a derivative
 * work (e.g., Copyright N) <Publication Year> Copyright Owner), and (3)
 * the name of MIPS Technologies, Inc. ($(B!H(BMIPS$(B!I(B) is not used in any
 * advertising or publicity pertaining to the use or distribution of
 * this software without specific, written prior authorization.
 *
 * THIS SOFTWARE IS PROVIDED $(B!H(BAS IS.$(B!I(B  MIPS MAKES NO WARRANTIES AND
 * DISCLAIMS ALL WARRANTIES, WHETHER EXPRESS, STATUTORY, IMPLIED OR
 * OTHERWISE, INCLUDING BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND
 * NON-INFRINGEMENT OF THIRD PARTY RIGHTS, REGARDING THIS SOFTWARE.
 * IN NO EVENT SHALL MIPS BE LIABLE FOR ANY DAMAGES, INCLUDING DIRECT,
 * INDIRECT, INCIDENTAL, CONSEQUENTIAL, SPECIAL, OR PUNITIVE DAMAGES OF
 * ANY KIND OR NATURE, ARISING OUT OF OR IN CONNECTION WITH THIS AGREEMENT,
 * THIS SOFTWARE AND/OR THE USE OF THIS SOFTWARE, WHETHER SUCH LIABILITY
 * IS ASSERTED ON THE BASIS OF CONTRACT, TORT (INCLUDING NEGLIGENCE OR
 * STRICT LIABILITY), OR OTHERWISE, EVEN IF MIPS HAS BEEN WARNED OF THE
 * POSSIBILITY OF ANY SUCH LOSS OR DAMAGE IN ADVANCE.
 *
 * Authors: Gabe M. Black
 *          Korey L. Sewell
 *          Jaidev Patwardhan
 */

#ifndef __MIPS_FAULTS_HH__
#define __MIPS_FAULTS_HH__

#include "sim/faults.hh"

// The design of the "name" and "vect" functions is in sim/faults.hh

namespace MipsISA
{
typedef const Addr FaultVect;

class MipsFault : public FaultBase
{
  protected:
    virtual bool skipFaultingInstruction() {return false;}
    virtual bool setRestartAddress() {return true;}
  public:
    Addr BadVAddr;
    Addr EntryHi_Asid;
    Addr EntryHi_VPN2;
    Addr EntryHi_VPN2X;
    Addr Context_BadVPN2;
#if FULL_SYSTEM
  void invoke(ThreadContext * tc) {};
  void setExceptionState(ThreadContext *,uint8_t);
  void setHandlerPC(Addr,ThreadContext *);
#endif
    virtual FaultVect vect() = 0;
    virtual FaultStat & countStat() = 0;
};

class MachineCheckFault : public MipsFault
{
  private:
    static FaultName _name;
    static FaultVect _vect;
    static FaultStat _count;
  public:
    FaultName name() const {return _name;}
    FaultVect vect() {return _vect;}
    FaultStat & countStat() {return _count;}
    bool isMachineCheckFault() {return true;}
};

class NonMaskableInterrupt : public MipsFault
{
  private:
    static FaultName _name;
    static FaultVect _vect;
    static FaultStat _count;
  public:
    FaultName name() const {return _name;}
    FaultVect vect() {return _vect;}
    FaultStat & countStat() {return _count;}
    bool isNonMaskableInterrupt() {return true;}
};

class AlignmentFault : public MipsFault
{
  private:
    static FaultName _name;
    static FaultVect _vect;
    static FaultStat _count;
  public:
    FaultName name() const {return _name;}
    FaultVect vect() {return _vect;}
    FaultStat & countStat() {return _count;}
    bool isAlignmentFault() {return true;}
};

class AddressErrorFault : public MipsFault
{
  private:
    static FaultName _name;
    static FaultVect _vect;
    static FaultStat _count;
  public:
    FaultName name() const {return _name;}
    FaultVect vect() {return _vect;}
    FaultStat & countStat() {return _count;}
#if FULL_SYSTEM
    void invoke(ThreadContext * tc);
#endif

};
class StoreAddressErrorFault : public MipsFault
{
  private:
    static FaultName _name;
    static FaultVect _vect;
    static FaultStat _count;
  public:
    FaultName name() const {return _name;}
    FaultVect vect() {return _vect;}
    FaultStat & countStat() {return _count;}
#if FULL_SYSTEM
    void invoke(ThreadContext * tc);
#endif

};
class UnimplementedOpcodeFault : public MipsFault
{
  private:
    static FaultName _name;
    static FaultVect _vect;
    static FaultStat _count;
  public:
    FaultName name() const {return _name;}
    FaultVect vect() {return _vect;}
    FaultStat & countStat() {return _count;}
};


class TLBRefillIFetchFault : public MipsFault
{
  private:
    Addr vaddr;
    static FaultName _name;
    static FaultVect _vect;
    static FaultStat _count;
  public:
    FaultName name() const {return _name;}
    FaultVect vect() {return _vect;}
    FaultStat & countStat() {return _count;}
    void invoke(ThreadContext * tc);
};
class TLBInvalidIFetchFault : public MipsFault
{
  private:
    Addr vaddr;
    static FaultName _name;
    static FaultVect _vect;
    static FaultStat _count;
  public:
    FaultName name() const {return _name;}
    FaultVect vect() {return _vect;}
    FaultStat & countStat() {return _count;}
    void invoke(ThreadContext * tc);
};

class NDtbMissFault : public MipsFault
{
  private:
    static FaultName _name;
    static FaultVect _vect;
    static FaultStat _count;
  public:
    FaultName name() const {return _name;}
    FaultVect vect() {return _vect;}
    FaultStat & countStat() {return _count;}
};

class PDtbMissFault : public MipsFault
{
  private:
    static FaultName _name;
    static FaultVect _vect;
    static FaultStat _count;
  public:
    FaultName name() const {return _name;}
    FaultVect vect() {return _vect;}
    FaultStat & countStat() {return _count;}
};

class DtbPageFault : public MipsFault
{
  private:
    static FaultName _name;
    static FaultVect _vect;
    static FaultStat _count;
  public:
    FaultName name() const {return _name;}
    FaultVect vect() {return _vect;}
    FaultStat & countStat() {return _count;}
};

class DtbAcvFault : public MipsFault
{
  private:
    static FaultName _name;
    static FaultVect _vect;
    static FaultStat _count;
  public:
    FaultName name() const {return _name;}
    FaultVect vect() {return _vect;}
    FaultStat & countStat() {return _count;}
};

class CacheErrorFault : public MipsFault
{
  private:
    Addr vaddr;
    static FaultName _name;
    static FaultVect _vect;
    static FaultStat _count;
  public:
    FaultName name() const {return _name;}
    FaultVect vect() {return _vect;}
    FaultStat & countStat() {return _count;}
    void invoke(ThreadContext * tc);
};




static inline Fault genMachineCheckFault()
{
    return new MachineCheckFault;
}

static inline Fault genAlignmentFault()
{
    return new AlignmentFault;
}

class ResetFault : public MipsFault
{
  private:
    static FaultName _name;
    static FaultVect _vect;
    static FaultStat _count;
  public:
    FaultName name() const {return _name;}
    FaultVect vect() {return _vect;}
    FaultStat & countStat() {return _count;}
    void invoke(ThreadContext * tc);

};
class SystemCallFault : public MipsFault
{
  private:
    static FaultName _name;
    static FaultVect _vect;
    static FaultStat _count;
  public:
    FaultName name() const {return _name;}
    FaultVect vect() {return _vect;}
    FaultStat & countStat() {return _count;}
    void invoke(ThreadContext * tc);
};

class SoftResetFault : public MipsFault
{
  private:
    static FaultName _name;
    static FaultVect _vect;
    static FaultStat _count;
  public:
    FaultName name() const {return _name;}
    FaultVect vect() {return _vect;}
    FaultStat & countStat() {return _count;}
    void invoke(ThreadContext * tc);
};
class DebugSingleStep : public MipsFault
{
  private:
    static FaultName _name;
    static FaultVect _vect;
    static FaultStat _count;
  public:
    FaultName name() const {return _name;}
    FaultVect vect() {return _vect;}
    FaultStat & countStat() {return _count;}
    void invoke(ThreadContext * tc);
};
class DebugInterrupt : public MipsFault
{
  private:
    static FaultName _name;
    static FaultVect _vect;
    static FaultStat _count;
  public:
    FaultName name() const {return _name;}
    FaultVect vect() {return _vect;}
    FaultStat & countStat() {return _count;}
    void invoke(ThreadContext * tc);
};

class CoprocessorUnusableFault : public MipsFault
{
  private:
    static FaultName _name;
    static FaultVect _vect;
    static FaultStat _count;
    int coProcID;
  public:
    FaultName name() const {return _name;}
    FaultVect vect() {return _vect;}
    FaultStat & countStat() {return _count;}
    void invoke(ThreadContext * tc);
    CoprocessorUnusableFault(int _procid){ coProcID = _procid;}
};

class ReservedInstructionFault : public MipsFault
{
  private:
    static FaultName _name;
    static FaultVect _vect;
    static FaultStat _count;
  public:
    FaultName name() const {return _name;}
    FaultVect vect() {return _vect;}
    FaultStat & countStat() {return _count;}
    void invoke(ThreadContext * tc);
};

class ThreadFault : public MipsFault
{
  private:
    static FaultName _name;
    static FaultVect _vect;
    static FaultStat _count;
  public:
    FaultName name() const {return _name;}
    FaultVect vect() {return _vect;}
    FaultStat & countStat() {return _count;}
    void invoke(ThreadContext * tc);
};


class ArithmeticFault : public MipsFault
{
  protected:
    bool skipFaultingInstruction() {return true;}
  private:
    static FaultName _name;
    static FaultVect _vect;
    static FaultStat _count;
  public:
    FaultName name() const {return _name;}
    FaultVect vect() {return _vect;}
    FaultStat & countStat() {return _count;}
#if FULL_SYSTEM
    void invoke(ThreadContext * tc);
#endif
};

class InterruptFault : public MipsFault
{
  protected:
    bool setRestartAddress() {return false;}
  private:
    static FaultName _name;
    static FaultVect _vect;
    static FaultStat _count;
  public:
    FaultName name() const {return _name;}
    FaultVect vect() {return _vect;}
    FaultStat & countStat() {return _count;}

#if FULL_SYSTEM
    void invoke(ThreadContext * tc);
#endif

    //void invoke(ThreadContext * tc);
};

class TrapFault : public MipsFault
{
  private:
    static FaultName _name;
    static FaultVect _vect;
    static FaultStat _count;
  public:
    FaultName name() const {return _name;}
    FaultVect vect() {return _vect;}
    FaultStat & countStat() {return _count;}
#if FULL_SYSTEM
    void invoke(ThreadContext * tc);
#endif
};

class BreakpointFault : public MipsFault
{
  private:
    static FaultName _name;
    static FaultVect _vect;
    static FaultStat _count;
  public:
    FaultName name() const {return _name;}
    FaultVect vect() {return _vect;}
    FaultStat & countStat() {return _count;}
#if FULL_SYSTEM
    void invoke(ThreadContext * tc);
#endif
};

class ItbRefillFault : public MipsFault
{
  private:
    static FaultName _name;
    static FaultVect _vect;
    static FaultStat _count;
  public:
    FaultName name() const {return _name;}
    FaultVect vect() {return _vect;}
    FaultStat & countStat() {return _count;}
#if FULL_SYSTEM
    void invoke(ThreadContext * tc);
#endif
};
class DtbRefillFault : public MipsFault
{
  private:
    static FaultName _name;
    static FaultVect _vect;
    static FaultStat _count;
  public:
    FaultName name() const {return _name;}
    FaultVect vect() {return _vect;}
    FaultStat & countStat() {return _count;}
#if FULL_SYSTEM
    void invoke(ThreadContext * tc);
#endif
};

class ItbPageFault : public MipsFault
{
  private:
    static FaultName _name;
    static FaultVect _vect;
    static FaultStat _count;
  public:
    FaultName name() const {return _name;}
    FaultVect vect() {return _vect;}
    FaultStat & countStat() {return _count;}
#if FULL_SYSTEM
    void invoke(ThreadContext * tc);
#endif
};

class ItbInvalidFault : public MipsFault
{
  private:
    static FaultName _name;
    static FaultVect _vect;
    static FaultStat _count;
  public:
    FaultName name() const {return _name;}
    FaultVect vect() {return _vect;}
    FaultStat & countStat() {return _count;}
#if FULL_SYSTEM
    void invoke(ThreadContext * tc);
#endif

};
class TLBModifiedFault : public MipsFault
{
  private:
    static FaultName _name;
    static FaultVect _vect;
    static FaultStat _count;
  public:
    FaultName name() const {return _name;}
    FaultVect vect() {return _vect;}
    FaultStat & countStat() {return _count;}
#if FULL_SYSTEM
    void invoke(ThreadContext * tc);
#endif

};

class DtbInvalidFault : public MipsFault
{
  private:
    static FaultName _name;
    static FaultVect _vect;
    static FaultStat _count;
  public:
    FaultName name() const {return _name;}
    FaultVect vect() {return _vect;}
    FaultStat & countStat() {return _count;}
#if FULL_SYSTEM
    void invoke(ThreadContext * tc);
#endif

};

class FloatEnableFault : public MipsFault
{
  private:
    static FaultName _name;
    static FaultVect _vect;
    static FaultStat _count;
  public:
    FaultName name() const {return _name;}
    FaultVect vect() {return _vect;}
    FaultStat & countStat() {return _count;}
};

class ItbMissFault : public MipsFault
{
  private:
    static FaultName _name;
    static FaultVect _vect;
    static FaultStat _count;
  public:
    FaultName name() const {return _name;}
    FaultVect vect() {return _vect;}
    FaultStat & countStat() {return _count;}
};

class ItbAcvFault : public MipsFault
{
  private:
    static FaultName _name;
    static FaultVect _vect;
    static FaultStat _count;
  public:
    FaultName name() const {return _name;}
    FaultVect vect() {return _vect;}
    FaultStat & countStat() {return _count;}
};

class IntegerOverflowFault : public MipsFault
{
  private:
    static FaultName _name;
    static FaultVect _vect;
    static FaultStat _count;
  public:
    FaultName name() const {return _name;}
    FaultVect vect() {return _vect;}
    FaultStat & countStat() {return _count;}
};

class DspStateDisabledFault : public MipsFault
{
  private:
    static FaultName _name;
    static FaultVect _vect;
    static FaultStat _count;
  public:
    FaultName name() const {return _name;}
    FaultVect vect() {return _vect;}
    FaultStat & countStat() {return _count;}
    void invoke(ThreadContext * tc);
};

} // MipsISA namespace

#endif // __MIPS_FAULTS_HH__