pseudo_inst.cc revision 2170 
1/*
2 * Copyright (c) 2003-2005 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 <errno.h>
30#include <fcntl.h>
31#include <unistd.h>
32#include <cstdio>
33
34#include <string>
35
36#include "sim/pseudo_inst.hh"
37#include "arch/vtophys.hh"
38#include "cpu/base.hh"
39#include "cpu/sampler/sampler.hh"
40#include "cpu/exec_context.hh"
41#include "kern/kernel_stats.hh"
42#include "sim/param.hh"
43#include "sim/serialize.hh"
44#include "sim/sim_exit.hh"
45#include "sim/stat_control.hh"
46#include "sim/stats.hh"
47#include "sim/system.hh"
48#include "sim/debug.hh"
49#include "sim/vptr.hh"
50
51using namespace std;
52
53extern Sampler *SampCPU;
54
55using namespace Stats;
56using namespace TheISA;
57
58namespace AlphaPseudo
59{
60    bool doStatisticsInsts;
61    bool doCheckpointInsts;
62    bool doQuiesce;
63
64    void
65    arm(ExecContext *xc)
66    {
67        xc->kernelStats->arm();
68    }
69
70    void
71    quiesce(ExecContext *xc)
72    {
73        if (!doQuiesce)
74            return;
75
76        xc->suspend();
77        xc->kernelStats->quiesce();
78    }
79
80    void
81    ivlb(ExecContext *xc)
82    {
83        xc->kernelStats->ivlb();
84    }
85
86    void
87    ivle(ExecContext *xc)
88    {
89    }
90
91    void
92    m5exit_old(ExecContext *xc)
93    {
94        SimExit(curTick, "m5_exit_old instruction encountered");
95    }
96
97    void
98    m5exit(ExecContext *xc, Tick delay)
99    {
100        Tick when = curTick + delay * Clock::Int::ns;
101        SimExit(when, "m5_exit instruction encountered");
102    }
103
104    void
105    resetstats(ExecContext *xc, Tick delay, Tick period)
106    {
107        if (!doStatisticsInsts)
108            return;
109
110
111        Tick when = curTick + delay * Clock::Int::ns;
112        Tick repeat = period * Clock::Int::ns;
113
114        using namespace Stats;
115        SetupEvent(Reset, when, repeat);
116    }
117
118    void
119    dumpstats(ExecContext *xc, Tick delay, Tick period)
120    {
121        if (!doStatisticsInsts)
122            return;
123
124
125        Tick when = curTick + delay * Clock::Int::ns;
126        Tick repeat = period * Clock::Int::ns;
127
128        using namespace Stats;
129        SetupEvent(Dump, when, repeat);
130    }
131
132    void
133    addsymbol(ExecContext *xc, Addr addr, Addr symbolAddr)
134    {
135        char symb[100];
136        CopyString(xc, symb, symbolAddr, 100);
137        std::string symbol(symb);
138
139        DPRINTF(Loader, "Loaded symbol: %s @ %#llx\n", symbol, addr);
140
141        xc->system->kernelSymtab->insert(addr,symbol);
142    }
143
144    void
145    dumpresetstats(ExecContext *xc, Tick delay, Tick period)
146    {
147        if (!doStatisticsInsts)
148            return;
149
150
151        Tick when = curTick + delay * Clock::Int::ns;
152        Tick repeat = period * Clock::Int::ns;
153
154        using namespace Stats;
155        SetupEvent(Dump|Reset, when, repeat);
156    }
157
158    void
159    m5checkpoint(ExecContext *xc, Tick delay, Tick period)
160    {
161        if (!doCheckpointInsts)
162            return;
163
164
165        Tick when = curTick + delay * Clock::Int::ns;
166        Tick repeat = period * Clock::Int::ns;
167
168        Checkpoint::setup(when, repeat);
169    }
170
171    uint64_t
172    readfile(ExecContext *xc, Addr vaddr, uint64_t len, uint64_t offset)
173    {
174        const string &file = xc->cpu->system->params->readfile;
175        if (file.empty()) {
176            return ULL(0);
177        }
178
179        uint64_t result = 0;
180
181        int fd = ::open(file.c_str(), O_RDONLY, 0);
182        if (fd < 0)
183            panic("could not open file %s\n", file);
184
185        if (::lseek(fd, offset, SEEK_SET) < 0)
186            panic("could not seek: %s", strerror(errno));
187
188        char *buf = new char[len];
189        char *p = buf;
190        while (len > 0) {
191            int bytes = ::read(fd, p, len);
192            if (bytes <= 0)
193                break;
194
195            p += bytes;
196            result += bytes;
197            len -= bytes;
198        }
199
200        close(fd);
201        CopyIn(xc, vaddr, buf, result);
202        delete [] buf;
203        return result;
204    }
205
206    class Context : public ParamContext
207    {
208      public:
209        Context(const string &section) : ParamContext(section) {}
210        void checkParams();
211    };
212
213    Context context("pseudo_inst");
214
215    Param<bool> __quiesce(&context, "quiesce",
216                          "enable quiesce instructions",
217                          true);
218    Param<bool> __statistics(&context, "statistics",
219                             "enable statistics pseudo instructions",
220                             true);
221    Param<bool> __checkpoint(&context, "checkpoint",
222                             "enable checkpoint pseudo instructions",
223                             true);
224
225    void
226    Context::checkParams()
227    {
228        doQuiesce = __quiesce;
229        doStatisticsInsts = __statistics;
230        doCheckpointInsts = __checkpoint;
231    }
232
233    void debugbreak(ExecContext *xc)
234    {
235        debug_break();
236    }
237
238    void switchcpu(ExecContext *xc)
239    {
240        if (SampCPU)
241            SampCPU->switchCPUs();
242    }
243}
244