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 * Authors: Nathan Binkert 29 * Gabe Black 30 */ 31 32#ifndef __FAULTS_HH__ 33#define __FAULTS_HH__ 34 35#include "base/refcnt.hh" 36#include "base/types.hh"
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38#include "sim/stats.hh" 39#include "config/full_system.hh" 40#include "cpu/static_inst.hh" 41 42class ThreadContext; 43 44typedef const char * FaultName; 45typedef Stats::Scalar FaultStat; 46 47// Each class has it's name statically define in _name, 48// and has a virtual function to access it's name. 49// The function is necessary because otherwise, all objects 50// which are being accessed cast as a FaultBase * (namely 51// all faults returned using the Fault type) will use the 52// generic FaultBase name. 53 54class FaultBase : public RefCounted 55{ 56 public: 57 virtual FaultName name() const = 0; 58 virtual void invoke(ThreadContext * tc, 59 StaticInstPtr inst = StaticInst::nullStaticInstPtr); 60 virtual bool isMachineCheckFault() const {return false;} 61 virtual bool isAlignmentFault() const {return false;} 62}; 63 64class UnimpFault : public FaultBase 65{ 66 private: 67 std::string panicStr; 68 public: 69 UnimpFault(std::string _str) 70 : panicStr(_str) 71 { } 72 73 FaultName name() const {return "Unimplemented simulator feature";} 74 void invoke(ThreadContext * tc, 75 StaticInstPtr inst = StaticInst::nullStaticInstPtr); 76}; 77 78#if !FULL_SYSTEM 79class GenericPageTableFault : public FaultBase 80{ 81 private: 82 Addr vaddr; 83 public: 84 FaultName name() const {return "Generic page table fault";} 85 GenericPageTableFault(Addr va) : vaddr(va) {} 86 void invoke(ThreadContext * tc, 87 StaticInstPtr inst = StaticInst::nullStaticInstPtr); 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 StaticInstPtr inst = StaticInst::nullStaticInstPtr); 99}; 100#endif 101 102#endif // __FAULTS_HH__
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