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/annotation.hh"
  34 #include "sim/param.hh"
  35 #include "sim/serialize.hh"
  36 #include "sim/sim_exit.hh"
  37 #include "sim/stat_control.hh"
  38 #include "sim/stats.hh"
  39
  40 using namespace std;
  41 using namespace Statistics;
  42
  43 namespace AlphaPseudo
  44 {
  45     bool doStatisticsInsts;
  46     bool doCheckpointInsts;
  47     bool doQuiesce;
  48
  49     void
  50     quiesce(ExecContext *xc)
  51     {
  52         if (!doQuiesce)
  53             return;
  54
  55         Annotate::QUIESCE(xc);
  56         xc->suspend();
  57         xc->kernelStats.quiesce();
  58     }
  59
  60     void
  61     m5exit_old(ExecContext *xc)
  62     {
  63         SimExit(curTick, "m5_exit_old instruction encountered");
  64     }
  65
  66     void
  67     m5exit(ExecContext *xc)
  68     {
  69         Tick delay = xc->regs.intRegFile[16];
  70         Tick when = curTick + NS2Ticks(delay);
  71         SimExit(when, "m5_exit instruction encountered");
  72     }
  73
  74     void
  75     resetstats(ExecContext *xc)
  76     {
  77         if (!doStatisticsInsts)
  78             return;
  79
  80         Tick delay = xc->regs.intRegFile[16];
  81         Tick period = xc->regs.intRegFile[17];
  82
  83         Tick when = curTick + NS2Ticks(delay);
  84         Tick repeat = NS2Ticks(period);
  85
  86         using namespace Statistics;
  87         SetupEvent(Reset, when, repeat);
  88     }
  89
  90     void
  91     dumpstats(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         using namespace Statistics;
 103         SetupEvent(Dump, when, repeat);
 104     }
 105
 106     void
 107     dumpresetstats(ExecContext *xc)
 108     {
 109         if (!doStatisticsInsts)
 110             return;
 111
 112         Tick delay = xc->regs.intRegFile[16];
 113         Tick period = xc->regs.intRegFile[17];
 114
 115         Tick when = curTick + NS2Ticks(delay);
 116         Tick repeat = NS2Ticks(period);
 117
 118         using namespace Statistics;
 119         SetupEvent(Dump|Reset, when, repeat);
 120     }
 121
 122     void
 123     m5checkpoint(ExecContext *xc)
 124     {
 125         if (!doCheckpointInsts)
 126             return;
 127
 128         Tick delay = xc->regs.intRegFile[16];
 129         Tick period = xc->regs.intRegFile[17];
 130
 131         Tick when = curTick + NS2Ticks(delay);
 132         Tick repeat = NS2Ticks(period);
 133
 134         Checkpoint::setup(when, repeat);
 135     }
 136
 137     class Context : public ParamContext
 138     {
 139       public:
 140         Context(const string &section) : ParamContext(section) {}
 141         void checkParams();
 142     };
 143
 144     Context context("PseudoInsts");
 145
 146     Param<bool> __quiesce(&context, "quiesce",
 147                           "enable quiesce instructions",
 148                           true);
 149     Param<bool> __statistics(&context, "statistics",
 150                              "enable statistics pseudo instructions",
 151                              true);
 152     Param<bool> __checkpoint(&context, "checkpoint",
 153                              "enable checkpoint pseudo instructions",
 154                              true);
 155
 156     void
 157     Context::checkParams()
 158     {
 159         doQuiesce = __quiesce;
 160         doStatisticsInsts = __statistics;
 161         doCheckpointInsts = __checkpoint;
 162     }
 163 }