6833ca7eed
Also move the "Fault" reference counted pointer type into a separate file, sim/fault.hh. It would be better to name this less similarly to sim/faults.hh to reduce confusion, but fault.hh matches the name of the type. We could change Fault to FaultPtr to match other pointer types, and then changing the name of the file would make more sense.
105 lines
3.5 KiB
C++
105 lines
3.5 KiB
C++
/*
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* Copyright (c) 2003-2005 The Regents of The University of Michigan
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met: redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer;
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* redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution;
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* neither the name of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* Authors: Nathan Binkert
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* Gabe Black
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*/
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#ifndef __FAULTS_HH__
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#define __FAULTS_HH__
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#include "base/refcnt.hh"
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#include "base/types.hh"
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#include "sim/fault.hh"
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#include "sim/stats.hh"
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#include "config/full_system.hh"
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#include "cpu/static_inst.hh"
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class ThreadContext;
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typedef const char * FaultName;
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typedef Stats::Scalar FaultStat;
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// Each class has it's name statically define in _name,
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// and has a virtual function to access it's name.
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// The function is necessary because otherwise, all objects
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// which are being accessed cast as a FaultBase * (namely
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// all faults returned using the Fault type) will use the
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// generic FaultBase name.
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class FaultBase : public RefCounted
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{
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public:
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virtual FaultName name() const = 0;
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virtual void invoke(ThreadContext * tc,
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StaticInstPtr inst = StaticInst::nullStaticInstPtr);
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virtual bool isMachineCheckFault() const {return false;}
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virtual bool isAlignmentFault() const {return false;}
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};
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FaultBase * const NoFault = 0;
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class UnimpFault : public FaultBase
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{
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private:
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std::string panicStr;
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public:
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UnimpFault(std::string _str)
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: panicStr(_str)
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{ }
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FaultName name() const {return "Unimplemented simulator feature";}
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void invoke(ThreadContext * tc,
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StaticInstPtr inst = StaticInst::nullStaticInstPtr);
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};
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#if !FULL_SYSTEM
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class GenericPageTableFault : public FaultBase
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{
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private:
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Addr vaddr;
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public:
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FaultName name() const {return "Generic page table fault";}
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GenericPageTableFault(Addr va) : vaddr(va) {}
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void invoke(ThreadContext * tc,
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StaticInstPtr inst = StaticInst::nullStaticInstPtr);
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};
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class GenericAlignmentFault : public FaultBase
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{
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private:
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Addr vaddr;
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public:
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FaultName name() const {return "Generic alignment fault";}
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GenericAlignmentFault(Addr va) : vaddr(va) {}
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void invoke(ThreadContext * tc,
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StaticInstPtr inst = StaticInst::nullStaticInstPtr);
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};
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#endif
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#endif // __FAULTS_HH__
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