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/stat_control.hh"
  37 #include "sim/stats.hh"
  38
  39 using namespace std;
  40 using namespace Statistics;
  41
  42 namespace AlphaPseudo
  43 {
  44     bool doStatisticsInsts;
  45     bool doCheckpointInsts;
  46     bool doQuiesce;
  47
  48     void
  49     arm(ExecContext *xc)
  50     {
  51         xc->kernelStats.arm();
  52     }
  53
  54     void
  55     quiesce(ExecContext *xc)
  56     {
  57         if (!doQuiesce)
  58             return;
  59
  60         xc->suspend();
  61         xc->kernelStats.quiesce();
  62     }
  63
  64     void
  65     ivlb(ExecContext *xc)
  66     {
  67         xc->kernelStats.ivlb();
  68     }
  69
  70     void
  71     ivle(ExecContext *xc)
  72     {
  73     }
  74
  75     void
  76     m5exit_old(ExecContext *xc)
  77     {
  78         SimExit(curTick, "m5_exit_old instruction encountered");
  79     }
  80
  81     void
  82     m5exit(ExecContext *xc)
  83     {
  84         Tick delay = xc->regs.intRegFile[16];
  85         Tick when = curTick + NS2Ticks(delay);
  86         SimExit(when, "m5_exit instruction encountered");
  87     }
  88
  89     void
  90     resetstats(ExecContext *xc)
  91     {
  92         if (!doStatisticsInsts)
  93             return;
  94
  95         Tick delay = xc->regs.intRegFile[16];
  96         Tick period = xc->regs.intRegFile[17];
  97
  98         Tick when = curTick + NS2Ticks(delay);
  99         Tick repeat = NS2Ticks(period);
 100
 101         using namespace Statistics;
 102         SetupEvent(Reset, when, repeat);
 103     }
 104
 105     void
 106     dumpstats(ExecContext *xc)
 107     {
 108         if (!doStatisticsInsts)
 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         using namespace Statistics;
 118         SetupEvent(Dump, when, repeat);
 119     }
 120
 121     void
 122     dumpresetstats(ExecContext *xc)
 123     {
 124         if (!doStatisticsInsts)
 125             return;
 126
 127         Tick delay = xc->regs.intRegFile[16];
 128         Tick period = xc->regs.intRegFile[17];
 129
 130         Tick when = curTick + NS2Ticks(delay);
 131         Tick repeat = NS2Ticks(period);
 132
 133         using namespace Statistics;
 134         SetupEvent(Dump|Reset, when, repeat);
 135     }
 136
 137     void
 138     m5checkpoint(ExecContext *xc)
 139     {
 140         if (!doCheckpointInsts)
 141             return;
 142
 143         Tick delay = xc->regs.intRegFile[16];
 144         Tick period = xc->regs.intRegFile[17];
 145
 146         Tick when = curTick + NS2Ticks(delay);
 147         Tick repeat = NS2Ticks(period);
 148
 149         Checkpoint::setup(when, repeat);
 150     }
 151
 152     class Context : public ParamContext
 153     {
 154       public:
 155         Context(const string &section) : ParamContext(section) {}
 156         void checkParams();
 157     };
 158
 159     Context context("PseudoInsts");
 160
 161     Param<bool> __quiesce(&context, "quiesce",
 162                           "enable quiesce instructions",
 163                           true);
 164     Param<bool> __statistics(&context, "statistics",
 165                              "enable statistics pseudo instructions",
 166                              true);
 167     Param<bool> __checkpoint(&context, "checkpoint",
 168                              "enable checkpoint pseudo instructions",
 169                              true);
 170
 171     void
 172     Context::checkParams()
 173     {
 174         doQuiesce = __quiesce;
 175         doStatisticsInsts = __statistics;
 176         doCheckpointInsts = __checkpoint;
 177     }
 178 }