pseudo_inst.cc revision 4078:3f73f808bbd4 
1/*
2 * Copyright (c) 2003-2006 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 * Authors: Nathan Binkert
29 */
30
31#include <errno.h>
32#include <fcntl.h>
33#include <unistd.h>
34
35#include <fstream>
36#include <string>
37
38#include "arch/vtophys.hh"
39#include "base/annotate.hh"
40#include "cpu/base.hh"
41#include "cpu/thread_context.hh"
42#include "cpu/quiesce_event.hh"
43#include "arch/kernel_stats.hh"
44#include "sim/pseudo_inst.hh"
45#include "sim/serialize.hh"
46#include "sim/sim_exit.hh"
47#include "sim/stat_control.hh"
48#include "sim/stats.hh"
49#include "sim/system.hh"
50#include "sim/debug.hh"
51#include "sim/vptr.hh"
52
53using namespace std;
54
55using namespace Stats;
56using namespace TheISA;
57
58namespace AlphaPseudo
59{
60    void
61    arm(ThreadContext *tc)
62    {
63        if (tc->getKernelStats())
64            tc->getKernelStats()->arm();
65    }
66
67    void
68    quiesce(ThreadContext *tc)
69    {
70        if (!tc->getCpuPtr()->params->do_quiesce)
71            return;
72
73        DPRINTF(Quiesce, "%s: quiesce()\n", tc->getCpuPtr()->name());
74
75        tc->suspend();
76        if (tc->getKernelStats())
77            tc->getKernelStats()->quiesce();
78    }
79
80    void
81    quiesceNs(ThreadContext *tc, uint64_t ns)
82    {
83        if (!tc->getCpuPtr()->params->do_quiesce || ns == 0)
84            return;
85
86        EndQuiesceEvent *quiesceEvent = tc->getQuiesceEvent();
87
88        Tick resume = curTick + Clock::Int::ns * ns;
89
90        if (quiesceEvent->scheduled())
91            quiesceEvent->reschedule(resume);
92        else
93            quiesceEvent->schedule(resume);
94
95        DPRINTF(Quiesce, "%s: quiesceNs(%d) until %d\n",
96                tc->getCpuPtr()->name(), ns, resume);
97
98        tc->suspend();
99        if (tc->getKernelStats())
100            tc->getKernelStats()->quiesce();
101    }
102
103    void
104    quiesceCycles(ThreadContext *tc, uint64_t cycles)
105    {
106        if (!tc->getCpuPtr()->params->do_quiesce || cycles == 0)
107            return;
108
109        EndQuiesceEvent *quiesceEvent = tc->getQuiesceEvent();
110
111        Tick resume = curTick + tc->getCpuPtr()->cycles(cycles);
112
113        if (quiesceEvent->scheduled())
114            quiesceEvent->reschedule(resume);
115        else
116            quiesceEvent->schedule(resume);
117
118        DPRINTF(Quiesce, "%s: quiesceCycles(%d) until %d\n",
119                tc->getCpuPtr()->name(), cycles, resume);
120
121        tc->suspend();
122        if (tc->getKernelStats())
123            tc->getKernelStats()->quiesce();
124    }
125
126    uint64_t
127    quiesceTime(ThreadContext *tc)
128    {
129        return (tc->readLastActivate() - tc->readLastSuspend()) / Clock::Int::ns;
130    }
131
132    void
133    m5exit_old(ThreadContext *tc)
134    {
135        exitSimLoop("m5_exit_old instruction encountered");
136    }
137
138    void
139    m5exit(ThreadContext *tc, Tick delay)
140    {
141        Tick when = curTick + delay * Clock::Int::ns;
142        schedExitSimLoop("m5_exit instruction encountered", when);
143    }
144
145    void
146    loadsymbol(ThreadContext *tc)
147    {
148        const string &filename = tc->getCpuPtr()->system->params()->symbolfile;
149        if (filename.empty()) {
150            return;
151        }
152
153        std::string buffer;
154        ifstream file(filename.c_str());
155
156        if (!file)
157            fatal("file error: Can't open symbol table file %s\n", filename);
158
159        while (!file.eof()) {
160            getline(file, buffer);
161
162            if (buffer.empty())
163                continue;
164
165            int idx = buffer.find(' ');
166            if (idx == string::npos)
167                continue;
168
169            string address = "0x" + buffer.substr(0, idx);
170            eat_white(address);
171            if (address.empty())
172                continue;
173
174            // Skip over letter and space
175            string symbol = buffer.substr(idx + 3);
176            eat_white(symbol);
177            if (symbol.empty())
178                continue;
179
180            Addr addr;
181            if (!to_number(address, addr))
182                continue;
183
184            if (!tc->getSystemPtr()->kernelSymtab->insert(addr, symbol))
185                continue;
186
187
188            DPRINTF(Loader, "Loaded symbol: %s @ %#llx\n", symbol, addr);
189        }
190        file.close();
191    }
192
193    void
194    resetstats(ThreadContext *tc, Tick delay, Tick period)
195    {
196        if (!tc->getCpuPtr()->params->do_statistics_insts)
197            return;
198
199
200        Tick when = curTick + delay * Clock::Int::ns;
201        Tick repeat = period * Clock::Int::ns;
202
203        Stats::StatEvent(false, true, when, repeat);
204    }
205
206    void
207    dumpstats(ThreadContext *tc, Tick delay, Tick period)
208    {
209        if (!tc->getCpuPtr()->params->do_statistics_insts)
210            return;
211
212
213        Tick when = curTick + delay * Clock::Int::ns;
214        Tick repeat = period * Clock::Int::ns;
215
216        Stats::StatEvent(true, false, when, repeat);
217    }
218
219    void
220    addsymbol(ThreadContext *tc, Addr addr, Addr symbolAddr)
221    {
222        char symb[100];
223        CopyStringOut(tc, symb, symbolAddr, 100);
224        std::string symbol(symb);
225
226        DPRINTF(Loader, "Loaded symbol: %s @ %#llx\n", symbol, addr);
227
228        tc->getSystemPtr()->kernelSymtab->insert(addr,symbol);
229    }
230
231    void
232    anBegin(ThreadContext *tc, uint64_t cur)
233    {
234        Annotate::annotations.add(tc->getSystemPtr(), 0, cur >> 32, cur &
235                0xFFFFFFFF, 0,0);
236    }
237
238    void
239    anWait(ThreadContext *tc, uint64_t cur, uint64_t wait)
240    {
241        Annotate::annotations.add(tc->getSystemPtr(), 0, cur >> 32, cur &
242                0xFFFFFFFF, wait >> 32, wait & 0xFFFFFFFF);
243    }
244
245
246    void
247    dumpresetstats(ThreadContext *tc, Tick delay, Tick period)
248    {
249        if (!tc->getCpuPtr()->params->do_statistics_insts)
250            return;
251
252
253        Tick when = curTick + delay * Clock::Int::ns;
254        Tick repeat = period * Clock::Int::ns;
255
256        Stats::StatEvent(true, true, when, repeat);
257    }
258
259    void
260    m5checkpoint(ThreadContext *tc, Tick delay, Tick period)
261    {
262        if (!tc->getCpuPtr()->params->do_checkpoint_insts)
263            return;
264
265        Tick when = curTick + delay * Clock::Int::ns;
266        Tick repeat = period * Clock::Int::ns;
267
268        schedExitSimLoop("checkpoint", when, repeat);
269    }
270
271    uint64_t
272    readfile(ThreadContext *tc, Addr vaddr, uint64_t len, uint64_t offset)
273    {
274        const string &file = tc->getSystemPtr()->params()->readfile;
275        if (file.empty()) {
276            return ULL(0);
277        }
278
279        uint64_t result = 0;
280
281        int fd = ::open(file.c_str(), O_RDONLY, 0);
282        if (fd < 0)
283            panic("could not open file %s\n", file);
284
285        if (::lseek(fd, offset, SEEK_SET) < 0)
286            panic("could not seek: %s", strerror(errno));
287
288        char *buf = new char[len];
289        char *p = buf;
290        while (len > 0) {
291            int bytes = ::read(fd, p, len);
292            if (bytes <= 0)
293                break;
294
295            p += bytes;
296            result += bytes;
297            len -= bytes;
298        }
299
300        close(fd);
301        CopyIn(tc, vaddr, buf, result);
302        delete [] buf;
303        return result;
304    }
305
306    void debugbreak(ThreadContext *tc)
307    {
308        debug_break();
309    }
310
311    void switchcpu(ThreadContext *tc)
312    {
313        exitSimLoop("switchcpu");
314    }
315}
316