pseudo_inst.cc revision 393 
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/sim_stats.hh"
38
39using namespace std;
40using namespace Statistics;
41
42namespace AlphaPseudo
43{
44    bool doStatisticsInsts;
45    bool doCheckpointInsts;
46    bool doQuiesce;
47
48    void
49    quiesce(ExecContext *xc)
50    {
51        if (!doQuiesce)
52            return;
53
54        Annotate::QUIESCE(xc);
55        xc->suspend();
56        xc->kernelStats.quiesce();
57    }
58
59    void
60    m5exit_old(ExecContext *xc)
61    {
62        SimExit(curTick, "m5_exit_old instruction encountered");
63    }
64
65    void
66    m5exit(ExecContext *xc)
67    {
68        Tick delay = xc->regs.intRegFile[16];
69        Tick when = curTick + NS2Ticks(delay);
70        SimExit(when, "m5_exit instruction encountered");
71    }
72
73    void
74    resetstats(ExecContext *xc)
75    {
76        if (!doStatisticsInsts)
77            return;
78
79        Tick delay = xc->regs.intRegFile[16];
80        Tick period = xc->regs.intRegFile[17];
81
82        Tick when = curTick + NS2Ticks(delay);
83        Tick repeat = NS2Ticks(period);
84
85        SetupEvent(Reset, when, repeat);
86    }
87
88    void
89    dumpstats(ExecContext *xc)
90    {
91        if (!doStatisticsInsts)
92            return;
93
94        Tick delay = xc->regs.intRegFile[16];
95        Tick period = xc->regs.intRegFile[17];
96
97        Tick when = curTick + NS2Ticks(delay);
98        Tick repeat = NS2Ticks(period);
99
100        SetupEvent(Dump, when, repeat);
101    }
102
103    void
104    dumpresetstats(ExecContext *xc)
105    {
106        if (!doStatisticsInsts)
107            return;
108
109        Tick delay = xc->regs.intRegFile[16];
110        Tick period = xc->regs.intRegFile[17];
111
112        Tick when = curTick + NS2Ticks(delay);
113        Tick repeat = NS2Ticks(period);
114
115        SetupEvent(Dump|Reset, when, repeat);
116    }
117
118    void
119    m5checkpoint(ExecContext *xc)
120    {
121        if (!doCheckpointInsts)
122            return;
123
124        Tick delay = xc->regs.intRegFile[16];
125        Tick period = xc->regs.intRegFile[17];
126
127        Tick when = curTick + NS2Ticks(delay);
128        Tick repeat = NS2Ticks(period);
129
130        SetupCheckpoint(when, repeat);
131    }
132
133    class Context : public ParamContext
134    {
135      public:
136        Context(const string &section) : ParamContext(section) {}
137        void checkParams();
138    };
139
140    Context context("PseudoInsts");
141
142    Param<bool> __quiesce(&context, "quiesce",
143                          "enable quiesce instructions",
144                          true);
145    Param<bool> __statistics(&context, "statistics",
146                             "enable statistics pseudo instructions",
147                             true);
148    Param<bool> __checkpoint(&context, "checkpoint",
149                             "enable checkpoint pseudo instructions",
150                             true);
151
152    void
153    Context::checkParams()
154    {
155        doQuiesce = __quiesce;
156        doStatisticsInsts = __statistics;
157        doCheckpointInsts = __checkpoint;
158    }
159}
160