This simplifies the decoder slightly, and makes the system call mechanism very slightly more realistic.
150 lines
4.8 KiB
C++
150 lines
4.8 KiB
C++
/*
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* Copyright (c) 2010 ARM Limited
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* All rights reserved
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*
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* The license below extends only to copyright in the software and shall
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* not be construed as granting a license to any other intellectual
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* property including but not limited to intellectual property relating
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* to a hardware implementation of the functionality of the software
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* licensed hereunder. You may use the software subject to the license
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* terms below provided that you ensure that this notice is replicated
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* unmodified and in its entirety in all distributions of the software,
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* modified or unmodified, in source code or in binary form.
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*
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* Copyright (c) 2003-2005 The Regents of The University of Michigan
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* Copyright (c) 2007-2008 The Florida State University
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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: Ali Saidi
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* Gabe Black
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*/
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#ifndef __ARM_FAULTS_HH__
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#define __ARM_FAULTS_HH__
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#include "arch/arm/types.hh"
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#include "config/full_system.hh"
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#include "sim/faults.hh"
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// The design of the "name" and "vect" functions is in sim/faults.hh
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namespace ArmISA
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{
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typedef const Addr FaultOffset;
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class ArmFaultBase : public FaultBase
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{
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protected:
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Addr getVector(ThreadContext *tc);
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public:
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struct FaultVals
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{
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const FaultName name;
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const FaultOffset offset;
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const OperatingMode nextMode;
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const uint8_t armPcOffset;
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const uint8_t thumbPcOffset;
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const bool abortDisable;
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const bool fiqDisable;
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FaultStat count;
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};
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#if FULL_SYSTEM
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void invoke(ThreadContext *tc);
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#endif
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virtual FaultStat& countStat() = 0;
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virtual FaultOffset offset() = 0;
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virtual OperatingMode nextMode() = 0;
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virtual uint8_t armPcOffset() = 0;
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virtual uint8_t thumbPcOffset() = 0;
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virtual bool abortDisable() = 0;
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virtual bool fiqDisable() = 0;
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};
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template<typename T>
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class ArmFault : public ArmFaultBase
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{
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protected:
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static FaultVals vals;
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public:
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FaultName name() const { return vals.name; }
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FaultStat & countStat() {return vals.count;}
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FaultOffset offset() { return vals.offset; }
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OperatingMode nextMode() { return vals.nextMode; }
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uint8_t armPcOffset() { return vals.armPcOffset; }
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uint8_t thumbPcOffset() { return vals.thumbPcOffset; }
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bool abortDisable() { return vals.abortDisable; }
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bool fiqDisable() { return vals.fiqDisable; }
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};
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class Reset : public ArmFault<Reset> {};
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class UndefinedInstruction : public ArmFault<UndefinedInstruction>
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{
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#if !FULL_SYSTEM
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protected:
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ExtMachInst machInst;
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bool unknown;
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const char *mnemonic;
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public:
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UndefinedInstruction(ExtMachInst _machInst,
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bool _unknown,
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const char *_mnemonic = NULL) :
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machInst(_machInst), unknown(_unknown), mnemonic(_mnemonic)
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{
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}
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void invoke(ThreadContext *tc);
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#endif
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};
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class SupervisorCall : public ArmFault<SupervisorCall>
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{
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#if !FULL_SYSTEM
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protected:
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ExtMachInst machInst;
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public:
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SupervisorCall(ExtMachInst _machInst) : machInst(_machInst)
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{}
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void invoke(ThreadContext *tc);
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#endif
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};
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class PrefetchAbort : public ArmFault<PrefetchAbort> {};
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class DataAbort : public ArmFault<DataAbort> {};
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class Interrupt : public ArmFault<Interrupt> {};
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class FastInterrupt : public ArmFault<FastInterrupt> {};
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} // ArmISA namespace
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#endif // __ARM_FAULTS_HH__
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