pseudo_inst.cc revision 5741:323dac95e72c 
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/kernel_stats.hh"
39#include "arch/vtophys.hh"
40#include "base/annotate.hh"
41#include "cpu/base.hh"
42#include "cpu/thread_context.hh"
43#include "cpu/quiesce_event.hh"
44#include "params/BaseCPU.hh"
45#include "sim/pseudo_inst.hh"
46#include "sim/serialize.hh"
47#include "sim/sim_events.hh"
48#include "sim/sim_exit.hh"
49#include "sim/stat_control.hh"
50#include "sim/stats.hh"
51#include "sim/system.hh"
52#include "sim/debug.hh"
53#include "sim/vptr.hh"
54
55using namespace std;
56
57using namespace Stats;
58using namespace TheISA;
59
60namespace PseudoInst {
61
62void
63arm(ThreadContext *tc)
64{
65    if (tc->getKernelStats())
66        tc->getKernelStats()->arm();
67}
68
69void
70quiesce(ThreadContext *tc)
71{
72    if (!tc->getCpuPtr()->params()->do_quiesce)
73        return;
74
75    DPRINTF(Quiesce, "%s: quiesce()\n", tc->getCpuPtr()->name());
76
77    tc->suspend();
78    if (tc->getKernelStats())
79        tc->getKernelStats()->quiesce();
80}
81
82void
83quiesceNs(ThreadContext *tc, uint64_t ns)
84{
85    if (!tc->getCpuPtr()->params()->do_quiesce || ns == 0)
86        return;
87
88    EndQuiesceEvent *quiesceEvent = tc->getQuiesceEvent();
89
90    Tick resume = curTick + Clock::Int::ns * ns;
91
92    mainEventQueue.reschedule(quiesceEvent, resume, true);
93
94    DPRINTF(Quiesce, "%s: quiesceNs(%d) until %d\n",
95            tc->getCpuPtr()->name(), ns, resume);
96
97    tc->suspend();
98    if (tc->getKernelStats())
99        tc->getKernelStats()->quiesce();
100}
101
102void
103quiesceCycles(ThreadContext *tc, uint64_t cycles)
104{
105    if (!tc->getCpuPtr()->params()->do_quiesce || cycles == 0)
106        return;
107
108    EndQuiesceEvent *quiesceEvent = tc->getQuiesceEvent();
109
110    Tick resume = curTick + tc->getCpuPtr()->ticks(cycles);
111
112    mainEventQueue.reschedule(quiesceEvent, resume, true);
113
114    DPRINTF(Quiesce, "%s: quiesceCycles(%d) until %d\n",
115            tc->getCpuPtr()->name(), cycles, resume);
116
117    tc->suspend();
118    if (tc->getKernelStats())
119        tc->getKernelStats()->quiesce();
120}
121
122uint64_t
123quiesceTime(ThreadContext *tc)
124{
125    return (tc->readLastActivate() - tc->readLastSuspend()) / Clock::Int::ns;
126}
127
128uint64_t
129rpns(ThreadContext *tc)
130{
131    return curTick / Clock::Int::ns;
132}
133
134void
135m5exit(ThreadContext *tc, Tick delay)
136{
137    Tick when = curTick + delay * Clock::Int::ns;
138    Event *event = new SimLoopExitEvent("m5_exit instruction encountered", 0);
139    mainEventQueue.schedule(event, when);
140}
141
142void
143loadsymbol(ThreadContext *tc)
144{
145    const string &filename = tc->getCpuPtr()->system->params()->symbolfile;
146    if (filename.empty()) {
147        return;
148    }
149
150    std::string buffer;
151    ifstream file(filename.c_str());
152
153    if (!file)
154        fatal("file error: Can't open symbol table file %s\n", filename);
155
156    while (!file.eof()) {
157        getline(file, buffer);
158
159        if (buffer.empty())
160            continue;
161
162        int idx = buffer.find(' ');
163        if (idx == string::npos)
164            continue;
165
166        string address = "0x" + buffer.substr(0, idx);
167        eat_white(address);
168        if (address.empty())
169            continue;
170
171        // Skip over letter and space
172        string symbol = buffer.substr(idx + 3);
173        eat_white(symbol);
174        if (symbol.empty())
175            continue;
176
177        Addr addr;
178        if (!to_number(address, addr))
179            continue;
180
181        if (!tc->getSystemPtr()->kernelSymtab->insert(addr, symbol))
182            continue;
183
184
185        DPRINTF(Loader, "Loaded symbol: %s @ %#llx\n", symbol, addr);
186    }
187    file.close();
188}
189
190void
191resetstats(ThreadContext *tc, Tick delay, Tick period)
192{
193    if (!tc->getCpuPtr()->params()->do_statistics_insts)
194        return;
195
196
197    Tick when = curTick + delay * Clock::Int::ns;
198    Tick repeat = period * Clock::Int::ns;
199
200    Stats::StatEvent(false, true, when, repeat);
201}
202
203void
204dumpstats(ThreadContext *tc, Tick delay, Tick period)
205{
206    if (!tc->getCpuPtr()->params()->do_statistics_insts)
207        return;
208
209
210    Tick when = curTick + delay * Clock::Int::ns;
211    Tick repeat = period * Clock::Int::ns;
212
213    Stats::StatEvent(true, false, when, repeat);
214}
215
216void
217addsymbol(ThreadContext *tc, Addr addr, Addr symbolAddr)
218{
219    char symb[100];
220    CopyStringOut(tc, symb, symbolAddr, 100);
221    std::string symbol(symb);
222
223    DPRINTF(Loader, "Loaded symbol: %s @ %#llx\n", symbol, addr);
224
225    tc->getSystemPtr()->kernelSymtab->insert(addr,symbol);
226}
227
228void
229dumpresetstats(ThreadContext *tc, Tick delay, Tick period)
230{
231    if (!tc->getCpuPtr()->params()->do_statistics_insts)
232        return;
233
234
235    Tick when = curTick + delay * Clock::Int::ns;
236    Tick repeat = period * Clock::Int::ns;
237
238    Stats::StatEvent(true, true, when, repeat);
239}
240
241void
242m5checkpoint(ThreadContext *tc, Tick delay, Tick period)
243{
244    if (!tc->getCpuPtr()->params()->do_checkpoint_insts)
245        return;
246
247    Tick when = curTick + delay * Clock::Int::ns;
248    Tick repeat = period * Clock::Int::ns;
249
250    Event *event = new SimLoopExitEvent("checkpoint", 0, repeat);
251    mainEventQueue.schedule(event, when);
252}
253
254uint64_t
255readfile(ThreadContext *tc, Addr vaddr, uint64_t len, uint64_t offset)
256{
257    const string &file = tc->getSystemPtr()->params()->readfile;
258    if (file.empty()) {
259        return ULL(0);
260    }
261
262    uint64_t result = 0;
263
264    int fd = ::open(file.c_str(), O_RDONLY, 0);
265    if (fd < 0)
266        panic("could not open file %s\n", file);
267
268    if (::lseek(fd, offset, SEEK_SET) < 0)
269        panic("could not seek: %s", strerror(errno));
270
271    char *buf = new char[len];
272    char *p = buf;
273    while (len > 0) {
274        int bytes = ::read(fd, p, len);
275        if (bytes <= 0)
276            break;
277
278        p += bytes;
279        result += bytes;
280        len -= bytes;
281    }
282
283    close(fd);
284    CopyIn(tc, vaddr, buf, result);
285    delete [] buf;
286    return result;
287}
288
289void
290debugbreak(ThreadContext *tc)
291{
292    debug_break();
293}
294
295void
296switchcpu(ThreadContext *tc)
297{
298    exitSimLoop("switchcpu");
299}
300
301/* namespace PseudoInst */ }
302