9d8273e341
Change-Id: Iff8588aba929b3909ca1b5ec0e494acb8f838543 Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/33280 Maintainer: Gabe Black <gabeblack@google.com> Tested-by: kokoro <noreply+kokoro@google.com> Reviewed-by: Bobby R. Bruce <bbruce@ucdavis.edu>
112 lines
3.9 KiB
C++
112 lines
3.9 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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#ifndef __FAULTS_HH__
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#define __FAULTS_HH__
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#include "base/types.hh"
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#include "cpu/static_inst.hh"
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#include "sim/stats.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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class FaultBase
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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, const StaticInstPtr &inst=
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StaticInst::nullStaticInstPtr);
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virtual ~FaultBase() {};
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};
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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) : panicStr(_str) {}
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FaultName name() const { return "Unimplemented simulator feature"; }
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void invoke(ThreadContext *tc, const StaticInstPtr &inst =
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StaticInst::nullStaticInstPtr) override;
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};
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class ReExec : public FaultBase
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{
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public:
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virtual FaultName name() const { return "Re-execution fault"; }
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void invoke(ThreadContext *tc, const StaticInstPtr &inst=
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StaticInst::nullStaticInstPtr) override;
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};
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/*
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* This class is needed to allow system call retries to occur for blocking
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* system calls in SE mode. A retry fault will be generated by the system call
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* emulation code if blocking conditions arise; the fault is passed up the
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* function call chain into the CPU model where it is handled by retrying the
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* syscall instruction on a later tick.
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*/
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class SyscallRetryFault : public FaultBase
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{
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public:
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virtual FaultName name() const { return "System call retry fault"; }
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SyscallRetryFault() {}
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void invoke(ThreadContext *tc, const StaticInstPtr &inst=
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StaticInst::nullStaticInstPtr) override;
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};
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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, const StaticInstPtr &inst=
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StaticInst::nullStaticInstPtr) override;
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Addr getFaultVAddr() const { return vaddr; }
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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, const StaticInstPtr &inst=
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StaticInst::nullStaticInstPtr) override;
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Addr getFaultVAddr() const { return vaddr; }
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};
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#endif // __FAULTS_HH__
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