arch/alpha/pseudo_inst.cc

   1 /*
   2  * Copyright (c) 2003 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
  29 #include <string>
  30
  31 #include "arch/alpha/pseudo_inst.hh"
  32 #include "cpu/exec_context.hh"
  33 #include "sim/param.hh"
  34 #include "sim/serialize.hh"
  35 #include "sim/sim_exit.hh"
  36 #include "sim/sim_stats.hh"
  37
  38 using namespace std;
  39 using namespace Statistics;
  40
  41 namespace AlphaPseudo
  42 {
  43     bool doStatisticsInsts;
  44     bool doCheckpointInsts;
  45
  46     void
  47     m5exit_old(ExecContext *xc)
  48     {
  49         SimExit(curTick, "m5_exit_old instruction encountered");
  50     }
  51
  52     void
  53     m5exit(ExecContext *xc)
  54     {
  55         Tick delay = xc->regs.intRegFile[16];
  56         Tick when = curTick + NS2Ticks(delay);
  57         SimExit(when, "m5_exit instruction encountered");
  58     }
  59
  60     void
  61     resetstats(ExecContext *xc)
  62     {
  63         if (!doStatisticsInsts)
  64             return;
  65
  66         Tick delay = xc->regs.intRegFile[16];
  67         Tick period = xc->regs.intRegFile[17];
  68
  69         Tick when = curTick + NS2Ticks(delay);
  70         Tick repeat = NS2Ticks(period);
  71
  72         SetupEvent(Reset, when, repeat);
  73     }
  74
  75     void
  76     dumpstats(ExecContext *xc)
  77     {
  78         if (!doStatisticsInsts)
  79             return;
  80
  81         Tick delay = xc->regs.intRegFile[16];
  82         Tick period = xc->regs.intRegFile[17];
  83
  84         Tick when = curTick + NS2Ticks(delay);
  85         Tick repeat = NS2Ticks(period);
  86
  87         SetupEvent(Dump, when, repeat);
  88     }
  89
  90     void
  91     dumpresetstats(ExecContext *xc)
  92     {
  93         if (!doStatisticsInsts)
  94             return;
  95
  96         Tick delay = xc->regs.intRegFile[16];
  97         Tick period = xc->regs.intRegFile[17];
  98
  99         Tick when = curTick + NS2Ticks(delay);
 100         Tick repeat = NS2Ticks(period);
 101
 102         SetupEvent(Dump|Reset, when, repeat);
 103     }
 104
 105     void
 106     m5checkpoint(ExecContext *xc)
 107     {
 108         if (!doCheckpointInsts)
 109             return;
 110
 111         Tick delay = xc->regs.intRegFile[16];
 112         Tick period = xc->regs.intRegFile[17];
 113
 114         Tick when = curTick + NS2Ticks(delay);
 115         Tick repeat = NS2Ticks(period);
 116
 117         SetupCheckpoint(when, repeat);
 118     }
 119
 120     class Context : public ParamContext
 121     {
 122       public:
 123         Context(const string &section) : ParamContext(section) {}
 124         void checkParams();
 125     };
 126
 127     Context context("PseudoInsts");
 128
 129     Param<bool> __statistics(&context, "statistics",
 130                              "enable the statistics pseudo instructions",
 131                              true);
 132     Param<bool> __checkpoint(&context, "checkpoint",
 133                              "enable the checkpoint pseudo instructions",
 134                              true);
 135
 136     void
 137     Context::checkParams()
 138     {
 139         doStatisticsInsts = __statistics;
 140         doCheckpointInsts = __checkpoint;
 141     }
 142 }