faults.hh revision 2147
1/* 2 * Copyright (c) 2003-2005 The Regents of The University of Michigan 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are 7 * met: redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer; 9 * redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution; 12 * neither the name of the copyright holders nor the names of its 13 * contributors may be used to endorse or promote products derived from 14 * this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29#ifndef __FAULTS_HH__ 30#define __FAULTS_HH__ 31 32#include "base/refcnt.hh" 33#include "sim/stats.hh" 34 35class FaultBase; 36typedef RefCountingPtr<FaultBase> Fault; 37 38typedef const char * FaultName; 39typedef Stats::Scalar<> FaultStat; 40 41// Each class has it's name statically define in _name, 42// and has a virtual function to access it's name. 43// The function is necessary because otherwise, all objects 44// which are being accessed cast as a FaultBase * (namely 45// all faults returned using the Fault type) will use the 46// generic FaultBase name. 47 48class FaultBase : public RefCounted 49{ 50 public: 51 virtual FaultName name() 52 { 53 return "none"; 54 } 55 virtual FaultStat & stat() = 0; 56 template<typename T> 57 bool isA() {return dynamic_cast<T *>(this);} 58}; 59 60static FaultBase * const NoFault __attribute__ ((unused)) = 0; 61 62class MachineCheckFault : public FaultBase 63{ 64 private: 65 static FaultName _name; 66 static FaultStat _stat; 67 public: 68 FaultName name() {return _name;} 69 FaultStat & stat() {return _stat;} 70}; 71 72class AlignmentFault : public FaultBase 73{ 74 private: 75 static FaultName _name; 76 static FaultStat _stat; 77 public: 78 FaultName name() {return _name;} 79 FaultStat & stat() {return _stat;} 80}; 81 82 83#endif // __FAULTS_HH__ 84