faults.hh revision 5004
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 292SN/A * Gabe Black 302SN/A */ 312SN/A 322SN/A#ifndef __FAULTS_HH__ 332SN/A#define __FAULTS_HH__ 342SN/A 352SN/A#include "base/refcnt.hh" 362SN/A#include "sim/stats.hh" 372SN/A#include "config/full_system.hh" 382SN/A 392SN/Aclass ThreadContext; 402SN/Aclass FaultBase; 412SN/Atypedef RefCountingPtr<FaultBase> Fault; 422SN/A 432SN/Atypedef const char * FaultName; 442SN/Atypedef Stats::Scalar<> FaultStat; 452SN/A 462SN/A// Each class has it's name statically define in _name, 472SN/A// and has a virtual function to access it's name. 482SN/A// The function is necessary because otherwise, all objects 492SN/A// which are being accessed cast as a FaultBase * (namely 502SN/A// all faults returned using the Fault type) will use the 512SN/A// generic FaultBase name. 522SN/A 532SN/Aclass FaultBase : public RefCounted 542SN/A{ 552SN/A public: 562SN/A virtual FaultName name() const = 0; 572SN/A virtual void invoke(ThreadContext * tc); 582SN/A// template<typename T> 592SN/A// bool isA() {return dynamic_cast<T *>(this);} 602SN/A virtual bool isMachineCheckFault() const {return false;} 612SN/A virtual bool isAlignmentFault() const {return false;} 622SN/A}; 632SN/A 642SN/AFaultBase * const NoFault = 0; 652SN/A 662SN/Aclass UnimpFault : public FaultBase 672SN/A{ 682SN/A private: 692SN/A std::string panicStr; 702SN/A public: 712SN/A UnimpFault(std::string _str) 722SN/A : panicStr(_str) 732SN/A { } 742SN/A 75593SN/A FaultName name() const {return "Unimplemented simulator feature";} 762SN/A void invoke(ThreadContext * tc); 772SN/A}; 782SN/A 792SN/A#if !FULL_SYSTEM 802SN/Aclass GenericPageTableFault : public FaultBase 812SN/A{ 822SN/A private: 83 Addr vaddr; 84 public: 85 FaultName name() const {return "Generic page table fault";} 86 GenericPageTableFault(Addr va) : vaddr(va) {} 87 void invoke(ThreadContext * tc); 88}; 89 90class GenericAlignmentFault : public FaultBase 91{ 92 private: 93 Addr vaddr; 94 public: 95 FaultName name() const {return "Generic alignment fault";} 96 GenericAlignmentFault(Addr va) : vaddr(va) {} 97 void invoke(ThreadContext * tc); 98}; 99#endif 100 101#endif // __FAULTS_HH__ 102