faults.hh revision 4183
12SN/A/*
21762SN/A * Copyright (c) 2003-2005 The Regents of The University of Michigan
32SN/A * All rights reserved.
42SN/A *
52SN/A * Redistribution and use in source and binary forms, with or without
62SN/A * modification, are permitted provided that the following conditions are
72SN/A * met: redistributions of source code must retain the above copyright
82SN/A * notice, this list of conditions and the following disclaimer;
92SN/A * redistributions in binary form must reproduce the above copyright
102SN/A * notice, this list of conditions and the following disclaimer in the
112SN/A * documentation and/or other materials provided with the distribution;
122SN/A * neither the name of the copyright holders nor the names of its
132SN/A * contributors may be used to endorse or promote products derived from
142SN/A * this software without specific prior written permission.
152SN/A *
162SN/A * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
172SN/A * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
182SN/A * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
192SN/A * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
202SN/A * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
212SN/A * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
222SN/A * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
232SN/A * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
242SN/A * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
252SN/A * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
262SN/A * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
272665Ssaidi@eecs.umich.edu *
282665Ssaidi@eecs.umich.edu * Authors: Nathan Binkert
292665Ssaidi@eecs.umich.edu *          Gabe Black
302SN/A */
312SN/A
322SN/A#ifndef __FAULTS_HH__
332SN/A#define __FAULTS_HH__
342SN/A
352147SN/A#include "base/refcnt.hh"
362147SN/A#include "sim/stats.hh"
372174SN/A#include "config/full_system.hh"
382147SN/A
392680Sktlim@umich.educlass ThreadContext;
402132SN/Aclass FaultBase;
412147SN/Atypedef RefCountingPtr<FaultBase> Fault;
422132SN/A
432147SN/Atypedef const char * FaultName;
442147SN/Atypedef Stats::Scalar<> FaultStat;
452147SN/A
462147SN/A// Each class has it's name statically define in _name,
472147SN/A// and has a virtual function to access it's name.
482147SN/A// The function is necessary because otherwise, all objects
492147SN/A// which are being accessed cast as a FaultBase * (namely
502147SN/A// all faults returned using the Fault type) will use the
512147SN/A// generic FaultBase name.
522147SN/A
532147SN/Aclass FaultBase : public RefCounted
542090SN/A{
552147SN/A  public:
562175SN/A    virtual FaultName name() = 0;
572680Sktlim@umich.edu    virtual void invoke(ThreadContext * tc);
582201SN/A//    template<typename T>
592201SN/A//    bool isA() {return dynamic_cast<T *>(this);}
602168SN/A    virtual bool isMachineCheckFault() {return false;}
612168SN/A    virtual bool isAlignmentFault() {return false;}
622SN/A};
632SN/A
642168SN/AFaultBase * const NoFault = 0;
652168SN/A
662612SN/Aclass UnimpFault : public FaultBase
672612SN/A{
682612SN/A  private:
692612SN/A    std::string panicStr;
702612SN/A  public:
712612SN/A    UnimpFault(std::string _str)
722612SN/A        : panicStr(_str)
732612SN/A    { }
742612SN/A
752612SN/A    FaultName name() {return "Unimplemented simulator feature";}
762680Sktlim@umich.edu    void invoke(ThreadContext * tc);
772612SN/A};
782612SN/A
794183Sgblack@eecs.umich.edu#if !FULL_SYSTEM
804183Sgblack@eecs.umich.educlass PageTableFault : public FaultBase
814183Sgblack@eecs.umich.edu{
824183Sgblack@eecs.umich.edu  private:
834183Sgblack@eecs.umich.edu    Addr vaddr;
844183Sgblack@eecs.umich.edu  public:
854183Sgblack@eecs.umich.edu    FaultName name() {return "M5 page table fault";}
864183Sgblack@eecs.umich.edu    PageTableFault(Addr va) : vaddr(va) {}
874183Sgblack@eecs.umich.edu    void invoke(ThreadContext * tc);
884183Sgblack@eecs.umich.edu};
894183Sgblack@eecs.umich.edu#endif
904183Sgblack@eecs.umich.edu
912SN/A#endif // __FAULTS_HH__
92