faults.hh revision 7678
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"
367678Sgblack@eecs.umich.edu#include "base/types.hh"
377678Sgblack@eecs.umich.edu#include "sim/fault.hh"
382147SN/A#include "sim/stats.hh"
392174SN/A#include "config/full_system.hh"
407678Sgblack@eecs.umich.edu#include "cpu/static_inst.hh"
412147SN/A
422680Sktlim@umich.educlass ThreadContext;
432132SN/A
442147SN/Atypedef const char * FaultName;
455999Snate@binkert.orgtypedef Stats::Scalar FaultStat;
462147SN/A
472147SN/A// Each class has it's name statically define in _name,
482147SN/A// and has a virtual function to access it's name.
492147SN/A// The function is necessary because otherwise, all objects
502147SN/A// which are being accessed cast as a FaultBase * (namely
512147SN/A// all faults returned using the Fault type) will use the
522147SN/A// generic FaultBase name.
532147SN/A
542147SN/Aclass FaultBase : public RefCounted
552090SN/A{
562147SN/A  public:
574695Sgblack@eecs.umich.edu    virtual FaultName name() const = 0;
587678Sgblack@eecs.umich.edu    virtual void invoke(ThreadContext * tc,
597678Sgblack@eecs.umich.edu            StaticInstPtr inst = StaticInst::nullStaticInstPtr);
604695Sgblack@eecs.umich.edu    virtual bool isMachineCheckFault() const {return false;}
614695Sgblack@eecs.umich.edu    virtual bool isAlignmentFault() const {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
754695Sgblack@eecs.umich.edu    FaultName name() const {return "Unimplemented simulator feature";}
767678Sgblack@eecs.umich.edu    void invoke(ThreadContext * tc,
777678Sgblack@eecs.umich.edu            StaticInstPtr inst = StaticInst::nullStaticInstPtr);
782612SN/A};
792612SN/A
804183Sgblack@eecs.umich.edu#if !FULL_SYSTEM
815004Sgblack@eecs.umich.educlass GenericPageTableFault : public FaultBase
824183Sgblack@eecs.umich.edu{
834183Sgblack@eecs.umich.edu  private:
844183Sgblack@eecs.umich.edu    Addr vaddr;
854183Sgblack@eecs.umich.edu  public:
865004Sgblack@eecs.umich.edu    FaultName name() const {return "Generic page table fault";}
875004Sgblack@eecs.umich.edu    GenericPageTableFault(Addr va) : vaddr(va) {}
887678Sgblack@eecs.umich.edu    void invoke(ThreadContext * tc,
897678Sgblack@eecs.umich.edu            StaticInstPtr inst = StaticInst::nullStaticInstPtr);
905004Sgblack@eecs.umich.edu};
915004Sgblack@eecs.umich.edu
925004Sgblack@eecs.umich.educlass GenericAlignmentFault : public FaultBase
935004Sgblack@eecs.umich.edu{
945004Sgblack@eecs.umich.edu  private:
955004Sgblack@eecs.umich.edu    Addr vaddr;
965004Sgblack@eecs.umich.edu  public:
975004Sgblack@eecs.umich.edu    FaultName name() const {return "Generic alignment fault";}
985004Sgblack@eecs.umich.edu    GenericAlignmentFault(Addr va) : vaddr(va) {}
997678Sgblack@eecs.umich.edu    void invoke(ThreadContext * tc,
1007678Sgblack@eecs.umich.edu            StaticInstPtr inst = StaticInst::nullStaticInstPtr);
1014183Sgblack@eecs.umich.edu};
1024183Sgblack@eecs.umich.edu#endif
1034183Sgblack@eecs.umich.edu
1042SN/A#endif // __FAULTS_HH__
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