src/sim/faults.hh

   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/types.hh"
  36 #include "cpu/static_inst.hh"
  37 #include "sim/stats.hh"
  38
  39 class ThreadContext;
  40
  41 typedef const char * FaultName;
  42 typedef Stats::Scalar FaultStat;
  43
  44 class FaultBase
  45 {
  46   public:
  47     virtual FaultName name() const = 0;
  48     virtual void invoke(ThreadContext * tc, const StaticInstPtr &inst =
  49                         StaticInst::nullStaticInstPtr);
  50 };
  51
  52 class UnimpFault : public FaultBase
  53 {
  54   private:
  55     std::string panicStr;
  56   public:
  57     UnimpFault(std::string _str)
  58         : panicStr(_str)
  59     { }
  60
  61     FaultName name() const { return "Unimplemented simulator feature"; }
  62     void invoke(ThreadContext * tc, const StaticInstPtr &inst =
  63                 StaticInst::nullStaticInstPtr);
  64 };
  65
  66 class ReExec : public FaultBase
  67 {
  68   public:
  69     virtual FaultName name() const { return "Re-execution fault"; }
  70     ReExec() {}
  71     void invoke(ThreadContext *tc, const StaticInstPtr &inst =
  72                 StaticInst::nullStaticInstPtr);
  73 };
  74
  75 class GenericPageTableFault : public FaultBase
  76 {
  77   private:
  78     Addr vaddr;
  79   public:
  80     FaultName name() const { return "Generic page table fault"; }
  81     GenericPageTableFault(Addr va) : vaddr(va) {}
  82     void invoke(ThreadContext * tc, const StaticInstPtr &inst =
  83                 StaticInst::nullStaticInstPtr);
  84 };
  85
  86 class GenericAlignmentFault : public FaultBase
  87 {
  88   private:
  89     Addr vaddr;
  90   public:
  91     FaultName name() const { return "Generic alignment fault"; }
  92     GenericAlignmentFault(Addr va) : vaddr(va) {}
  93     void invoke(ThreadContext * tc, const StaticInstPtr &inst =
  94                 StaticInst::nullStaticInstPtr);
  95 };
  96
  97 #endif // __FAULTS_HH__