pseudo_inst.cc revision 5504:288b54c2fd8d 
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 PseudoInst {
59
60void
61arm(ThreadContext *tc)
62{
63    if (tc->getKernelStats())
64        tc->getKernelStats()->arm();
65}
66
67void
68quiesce(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
80void
81quiesceNs(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    quiesceEvent->reschedule(resume, true);
91
92    DPRINTF(Quiesce, "%s: quiesceNs(%d) until %d\n",
93            tc->getCpuPtr()->name(), ns, resume);
94
95    tc->suspend();
96    if (tc->getKernelStats())
97        tc->getKernelStats()->quiesce();
98}
99
100void
101quiesceCycles(ThreadContext *tc, uint64_t cycles)
102{
103    if (!tc->getCpuPtr()->params->do_quiesce || cycles == 0)
104        return;
105
106    EndQuiesceEvent *quiesceEvent = tc->getQuiesceEvent();
107
108    Tick resume = curTick + tc->getCpuPtr()->ticks(cycles);
109
110    quiesceEvent->reschedule(resume, true);
111
112    DPRINTF(Quiesce, "%s: quiesceCycles(%d) until %d\n",
113            tc->getCpuPtr()->name(), cycles, resume);
114
115    tc->suspend();
116    if (tc->getKernelStats())
117        tc->getKernelStats()->quiesce();
118}
119
120uint64_t
121quiesceTime(ThreadContext *tc)
122{
123    return (tc->readLastActivate() - tc->readLastSuspend()) / Clock::Int::ns;
124}
125
126void
127m5exit_old(ThreadContext *tc)
128{
129    exitSimLoop("m5_exit_old instruction encountered");
130}
131
132void
133m5exit(ThreadContext *tc, Tick delay)
134{
135    Tick when = curTick + delay * Clock::Int::ns;
136    schedExitSimLoop("m5_exit instruction encountered", when);
137}
138
139void
140loadsymbol(ThreadContext *tc)
141{
142    const string &filename = tc->getCpuPtr()->system->params()->symbolfile;
143    if (filename.empty()) {
144        return;
145    }
146
147    std::string buffer;
148    ifstream file(filename.c_str());
149
150    if (!file)
151        fatal("file error: Can't open symbol table file %s\n", filename);
152
153    while (!file.eof()) {
154        getline(file, buffer);
155
156        if (buffer.empty())
157            continue;
158
159        int idx = buffer.find(' ');
160        if (idx == string::npos)
161            continue;
162
163        string address = "0x" + buffer.substr(0, idx);
164        eat_white(address);
165        if (address.empty())
166            continue;
167
168        // Skip over letter and space
169        string symbol = buffer.substr(idx + 3);
170        eat_white(symbol);
171        if (symbol.empty())
172            continue;
173
174        Addr addr;
175        if (!to_number(address, addr))
176            continue;
177
178        if (!tc->getSystemPtr()->kernelSymtab->insert(addr, symbol))
179            continue;
180
181
182        DPRINTF(Loader, "Loaded symbol: %s @ %#llx\n", symbol, addr);
183    }
184    file.close();
185}
186
187void
188resetstats(ThreadContext *tc, Tick delay, Tick period)
189{
190    if (!tc->getCpuPtr()->params->do_statistics_insts)
191        return;
192
193
194    Tick when = curTick + delay * Clock::Int::ns;
195    Tick repeat = period * Clock::Int::ns;
196
197    Stats::StatEvent(false, true, when, repeat);
198}
199
200void
201dumpstats(ThreadContext *tc, Tick delay, Tick period)
202{
203    if (!tc->getCpuPtr()->params->do_statistics_insts)
204        return;
205
206
207    Tick when = curTick + delay * Clock::Int::ns;
208    Tick repeat = period * Clock::Int::ns;
209
210    Stats::StatEvent(true, false, when, repeat);
211}
212
213void
214addsymbol(ThreadContext *tc, Addr addr, Addr symbolAddr)
215{
216    char symb[100];
217    CopyStringOut(tc, symb, symbolAddr, 100);
218    std::string symbol(symb);
219
220    DPRINTF(Loader, "Loaded symbol: %s @ %#llx\n", symbol, addr);
221
222    tc->getSystemPtr()->kernelSymtab->insert(addr,symbol);
223}
224
225void
226anBegin(ThreadContext *tc, uint64_t cur)
227{
228    Annotate::annotations.add(tc->getSystemPtr(), 0, cur >> 32, cur &
229                              0xFFFFFFFF, 0,0);
230}
231
232void
233anWait(ThreadContext *tc, uint64_t cur, uint64_t wait)
234{
235    Annotate::annotations.add(tc->getSystemPtr(), 0, cur >> 32, cur &
236                              0xFFFFFFFF, wait >> 32, wait & 0xFFFFFFFF);
237}
238
239
240void
241dumpresetstats(ThreadContext *tc, Tick delay, Tick period)
242{
243    if (!tc->getCpuPtr()->params->do_statistics_insts)
244        return;
245
246
247    Tick when = curTick + delay * Clock::Int::ns;
248    Tick repeat = period * Clock::Int::ns;
249
250    Stats::StatEvent(true, true, when, repeat);
251}
252
253void
254m5checkpoint(ThreadContext *tc, Tick delay, Tick period)
255{
256    if (!tc->getCpuPtr()->params->do_checkpoint_insts)
257        return;
258
259    Tick when = curTick + delay * Clock::Int::ns;
260    Tick repeat = period * Clock::Int::ns;
261
262    schedExitSimLoop("checkpoint", when, repeat);
263}
264
265uint64_t
266readfile(ThreadContext *tc, Addr vaddr, uint64_t len, uint64_t offset)
267{
268    const string &file = tc->getSystemPtr()->params()->readfile;
269    if (file.empty()) {
270        return ULL(0);
271    }
272
273    uint64_t result = 0;
274
275    int fd = ::open(file.c_str(), O_RDONLY, 0);
276    if (fd < 0)
277        panic("could not open file %s\n", file);
278
279    if (::lseek(fd, offset, SEEK_SET) < 0)
280        panic("could not seek: %s", strerror(errno));
281
282    char *buf = new char[len];
283    char *p = buf;
284    while (len > 0) {
285        int bytes = ::read(fd, p, len);
286        if (bytes <= 0)
287            break;
288
289        p += bytes;
290        result += bytes;
291        len -= bytes;
292    }
293
294    close(fd);
295    CopyIn(tc, vaddr, buf, result);
296    delete [] buf;
297    return result;
298}
299
300void
301debugbreak(ThreadContext *tc)
302{
303    debug_break();
304}
305
306void
307switchcpu(ThreadContext *tc)
308{
309    exitSimLoop("switchcpu");
310}
311
312/* namespace PseudoInst */ }
313