pseudo_inst.cc revision 711 
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
39using namespace std;
40using namespace Statistics;
41
42namespace 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}
179