1/*
2 * Copyright 2018 Google, Inc.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are
6 * met: redistributions of source code must retain the above copyright
7 * notice, this list of conditions and the following disclaimer;
8 * redistributions in binary form must reproduce the above copyright
9 * notice, this list of conditions and the following disclaimer in the
10 * documentation and/or other materials provided with the distribution;
11 * neither the name of the copyright holders nor the names of its
12 * contributors may be used to endorse or promote products derived from
13 * this software without specific prior written permission.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
16 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
17 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
18 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
19 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
20 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
21 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
25 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 *
27 * Authors: Gabe Black
28 */
29
30#include <vector>
31
32#include "base/logging.hh"
33#include "base/types.hh"
34#include "python/pybind11/pybind.hh"
35#include "systemc/core/python.hh"
36#include "systemc/ext/core/sc_time.hh"
37
38namespace sc_core
39{
40
41namespace
42{
43
44const char *TimeUnitNames[] = {
45 [SC_FS] = "fs",
46 [SC_PS] = "ps",
47 [SC_NS] = "ns",
48 [SC_US] = "us",
49 [SC_MS] = "ms",
50 [SC_SEC] = "s"
51};
52
53double TimeUnitScale[] = {
54 [SC_FS] = 1.0e-15,
55 [SC_PS] = 1.0e-12,
56 [SC_NS] = 1.0e-9,
57 [SC_US] = 1.0e-6,
58 [SC_MS] = 1.0e-3,
59 [SC_SEC] = 1.0
60};
61
62bool timeFixed = false;
63bool pythonReady = false;
64
65struct SetInfo
66{
67 SetInfo(::sc_core::sc_time *time, double d, ::sc_core::sc_time_unit tu) :
68 time(time), d(d), tu(tu)
69 {}
70
71 ::sc_core::sc_time *time;
72 double d;
73 ::sc_core::sc_time_unit tu;
74};
75std::vector<SetInfo> toSet;
76
77void
78setWork(sc_time *time, double d, ::sc_core::sc_time_unit tu)
79{
80 //XXX Assuming the time resolution is 1ps.
81 double scale = TimeUnitScale[tu] / TimeUnitScale[SC_PS];
82 // Accellera claims there is a linux bug, and that these next two
83 // lines work around them.
84 volatile double tmp = d * scale + 0.5;
85 *time = sc_time::from_value(static_cast<uint64_t>(tmp));
86}
87
88void
89fixTime()
90{
91 auto ticks = pybind11::module::import("m5.ticks");
92 auto fix_global_frequency = ticks.attr("fixGlobalFrequency");
93 fix_global_frequency();
94
95 for (auto &t: toSet)
96 setWork(t.time, t.d, t.tu);
97 toSet.clear();
98}
99
100void
101set(::sc_core::sc_time *time, double d, ::sc_core::sc_time_unit tu)
102{
103 // Only fix time once.
104 if (!timeFixed) {
105 timeFixed = true;
106
107 // If we've run, python is working and we haven't fixed time yet.
108 if (pythonReady)
109 fixTime();
110 }
111 if (pythonReady) {
112 // Time should be working. Set up this sc_time.
113 setWork(time, d, tu);
114 } else {
115 // Time isn't set up yet. Defer setting up this sc_time.
116 toSet.emplace_back(time, d, tu);
117 }
118}
119
120class TimeSetter : public ::sc_gem5::PythonReadyFunc
121{
122 public:
123 TimeSetter() : ::sc_gem5::PythonReadyFunc() {}
124
125 void
126 run() override
127 {
128 // Record that we've run and python/pybind should be usable.
129 pythonReady = true;
130
131 // If time is already fixed, let python know.
132 if (timeFixed)
133 fixTime();
134 }
135} timeSetter;
136
137} // anonymous namespace
138
139sc_time::sc_time() : val(0) {}
140
141sc_time::sc_time(double d, sc_time_unit tu)
142{
143 val = 0;
144 if (d != 0)
145 set(this, d, tu);
146}
147
148sc_time::sc_time(const sc_time &t)
149{
150 val = t.val;
151}
152
153sc_time::sc_time(double, bool)
154{
155 warn("%s not implemented.\n", __PRETTY_FUNCTION__);
156}
157
158sc_time::sc_time(sc_dt::uint64, bool)
159{
160 warn("%s not implemented.\n", __PRETTY_FUNCTION__);
161}
162
163sc_time &
164sc_time::operator = (const sc_time &t)
165{
166 val = t.val;
167 return *this;
168}
169
170sc_dt::uint64
171sc_time::value() const
172{
173 return val;
174}
175
176double
177sc_time::to_double() const
178{
| 1/*
2 * Copyright 2018 Google, Inc.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are
6 * met: redistributions of source code must retain the above copyright
7 * notice, this list of conditions and the following disclaimer;
8 * redistributions in binary form must reproduce the above copyright
9 * notice, this list of conditions and the following disclaimer in the
10 * documentation and/or other materials provided with the distribution;
11 * neither the name of the copyright holders nor the names of its
12 * contributors may be used to endorse or promote products derived from
13 * this software without specific prior written permission.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
16 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
17 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
18 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
19 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
20 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
21 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
25 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 *
27 * Authors: Gabe Black
28 */
29
30#include <vector>
31
32#include "base/logging.hh"
33#include "base/types.hh"
34#include "python/pybind11/pybind.hh"
35#include "systemc/core/python.hh"
36#include "systemc/ext/core/sc_time.hh"
37
38namespace sc_core
39{
40
41namespace
42{
43
44const char *TimeUnitNames[] = {
45 [SC_FS] = "fs",
46 [SC_PS] = "ps",
47 [SC_NS] = "ns",
48 [SC_US] = "us",
49 [SC_MS] = "ms",
50 [SC_SEC] = "s"
51};
52
53double TimeUnitScale[] = {
54 [SC_FS] = 1.0e-15,
55 [SC_PS] = 1.0e-12,
56 [SC_NS] = 1.0e-9,
57 [SC_US] = 1.0e-6,
58 [SC_MS] = 1.0e-3,
59 [SC_SEC] = 1.0
60};
61
62bool timeFixed = false;
63bool pythonReady = false;
64
65struct SetInfo
66{
67 SetInfo(::sc_core::sc_time *time, double d, ::sc_core::sc_time_unit tu) :
68 time(time), d(d), tu(tu)
69 {}
70
71 ::sc_core::sc_time *time;
72 double d;
73 ::sc_core::sc_time_unit tu;
74};
75std::vector<SetInfo> toSet;
76
77void
78setWork(sc_time *time, double d, ::sc_core::sc_time_unit tu)
79{
80 //XXX Assuming the time resolution is 1ps.
81 double scale = TimeUnitScale[tu] / TimeUnitScale[SC_PS];
82 // Accellera claims there is a linux bug, and that these next two
83 // lines work around them.
84 volatile double tmp = d * scale + 0.5;
85 *time = sc_time::from_value(static_cast<uint64_t>(tmp));
86}
87
88void
89fixTime()
90{
91 auto ticks = pybind11::module::import("m5.ticks");
92 auto fix_global_frequency = ticks.attr("fixGlobalFrequency");
93 fix_global_frequency();
94
95 for (auto &t: toSet)
96 setWork(t.time, t.d, t.tu);
97 toSet.clear();
98}
99
100void
101set(::sc_core::sc_time *time, double d, ::sc_core::sc_time_unit tu)
102{
103 // Only fix time once.
104 if (!timeFixed) {
105 timeFixed = true;
106
107 // If we've run, python is working and we haven't fixed time yet.
108 if (pythonReady)
109 fixTime();
110 }
111 if (pythonReady) {
112 // Time should be working. Set up this sc_time.
113 setWork(time, d, tu);
114 } else {
115 // Time isn't set up yet. Defer setting up this sc_time.
116 toSet.emplace_back(time, d, tu);
117 }
118}
119
120class TimeSetter : public ::sc_gem5::PythonReadyFunc
121{
122 public:
123 TimeSetter() : ::sc_gem5::PythonReadyFunc() {}
124
125 void
126 run() override
127 {
128 // Record that we've run and python/pybind should be usable.
129 pythonReady = true;
130
131 // If time is already fixed, let python know.
132 if (timeFixed)
133 fixTime();
134 }
135} timeSetter;
136
137} // anonymous namespace
138
139sc_time::sc_time() : val(0) {}
140
141sc_time::sc_time(double d, sc_time_unit tu)
142{
143 val = 0;
144 if (d != 0)
145 set(this, d, tu);
146}
147
148sc_time::sc_time(const sc_time &t)
149{
150 val = t.val;
151}
152
153sc_time::sc_time(double, bool)
154{
155 warn("%s not implemented.\n", __PRETTY_FUNCTION__);
156}
157
158sc_time::sc_time(sc_dt::uint64, bool)
159{
160 warn("%s not implemented.\n", __PRETTY_FUNCTION__);
161}
162
163sc_time &
164sc_time::operator = (const sc_time &t)
165{
166 val = t.val;
167 return *this;
168}
169
170sc_dt::uint64
171sc_time::value() const
172{
173 return val;
174}
175
176double
177sc_time::to_double() const
178{
|
179 warn("%s not implemented.\n", __PRETTY_FUNCTION__);
180 return 0.0;
| 179 return static_cast<double>(val);
|
181}
182double
183sc_time::to_seconds() const
184{
185 warn("%s not implemented.\n", __PRETTY_FUNCTION__);
186 return 0.0;
187}
188
189const std::string
190sc_time::to_string() const
191{
192 warn("%s not implemented.\n", __PRETTY_FUNCTION__);
193 return "";
194}
195
196bool
197sc_time::operator == (const sc_time &t) const
198{
199 return val == t.val;
200}
201
202bool
203sc_time::operator != (const sc_time &t) const
204{
205 return val != t.val;
206}
207
208bool
209sc_time::operator < (const sc_time &t) const
210{
211 return val < t.val;
212}
213
214bool
215sc_time::operator <= (const sc_time &t) const
216{
217 return val <= t.val;
218}
219
220bool
221sc_time::operator > (const sc_time &t) const
222{
223 return val > t.val;
224}
225
226bool
227sc_time::operator >= (const sc_time &t) const
228{
229 return val >= t.val;
230}
231
232sc_time &
233sc_time::operator += (const sc_time &t)
234{
235 val += t.val;
236 return *this;
237}
238
239sc_time &
240sc_time::operator -= (const sc_time &t)
241{
242 val -= t.val;
243 return *this;
244}
245
246sc_time &
| 180}
181double
182sc_time::to_seconds() const
183{
184 warn("%s not implemented.\n", __PRETTY_FUNCTION__);
185 return 0.0;
186}
187
188const std::string
189sc_time::to_string() const
190{
191 warn("%s not implemented.\n", __PRETTY_FUNCTION__);
192 return "";
193}
194
195bool
196sc_time::operator == (const sc_time &t) const
197{
198 return val == t.val;
199}
200
201bool
202sc_time::operator != (const sc_time &t) const
203{
204 return val != t.val;
205}
206
207bool
208sc_time::operator < (const sc_time &t) const
209{
210 return val < t.val;
211}
212
213bool
214sc_time::operator <= (const sc_time &t) const
215{
216 return val <= t.val;
217}
218
219bool
220sc_time::operator > (const sc_time &t) const
221{
222 return val > t.val;
223}
224
225bool
226sc_time::operator >= (const sc_time &t) const
227{
228 return val >= t.val;
229}
230
231sc_time &
232sc_time::operator += (const sc_time &t)
233{
234 val += t.val;
235 return *this;
236}
237
238sc_time &
239sc_time::operator -= (const sc_time &t)
240{
241 val -= t.val;
242 return *this;
243}
244
245sc_time &
|
247sc_time::operator *= (double)
| 246sc_time::operator *= (double d)
|
248{
| 247{
|
249 warn("%s not implemented.\n", __PRETTY_FUNCTION__);
| 248 val = static_cast<int64_t>(static_cast<double>(val) * d + 0.5);
|
250 return *this;
251}
252
253sc_time &
| 249 return *this;
250}
251
252sc_time &
|
254sc_time::operator /= (double)
| 253sc_time::operator /= (double d)
|
255{
| 254{
|
256 warn("%s not implemented.\n", __PRETTY_FUNCTION__);
| 255 val = static_cast<int64_t>(static_cast<double>(val) / d + 0.5);
|
257 return *this;
258}
259
260void
261sc_time::print(std::ostream &os) const
262{
263 if (val == 0) {
264 os << "0 s";
265 } else {
266 //XXX Assuming the time resolution is 1ps.
267 sc_time_unit tu = SC_PS;
268 uint64_t scaled = val;
269 while (tu < SC_SEC && (scaled % 1000) == 0) {
270 tu = (sc_time_unit)((int)tu + 1);
271 scaled /= 1000;
272 }
273
274 os << scaled << ' ' << TimeUnitNames[tu];
275 }
276}
277
278sc_time
279sc_time::from_value(sc_dt::uint64 u)
280{
281 sc_time t;
282 t.val = u;
283 return t;
284}
285
286sc_time
287sc_time::from_seconds(double)
288{
289 warn("%s not implemented.\n", __PRETTY_FUNCTION__);
290 return sc_time();
291}
292
293sc_time
294sc_time::from_string(const char *str)
295{
296 warn("%s not implemented.\n", __PRETTY_FUNCTION__);
297 return sc_time();
298}
299
300const sc_time
301operator + (const sc_time &a, const sc_time &b)
302{
303 return sc_time::from_value(a.value() + b.value());
304}
305
306const sc_time
307operator - (const sc_time &a, const sc_time &b)
308{
309 return sc_time::from_value(a.value() - b.value());
310}
311
312const sc_time
| 256 return *this;
257}
258
259void
260sc_time::print(std::ostream &os) const
261{
262 if (val == 0) {
263 os << "0 s";
264 } else {
265 //XXX Assuming the time resolution is 1ps.
266 sc_time_unit tu = SC_PS;
267 uint64_t scaled = val;
268 while (tu < SC_SEC && (scaled % 1000) == 0) {
269 tu = (sc_time_unit)((int)tu + 1);
270 scaled /= 1000;
271 }
272
273 os << scaled << ' ' << TimeUnitNames[tu];
274 }
275}
276
277sc_time
278sc_time::from_value(sc_dt::uint64 u)
279{
280 sc_time t;
281 t.val = u;
282 return t;
283}
284
285sc_time
286sc_time::from_seconds(double)
287{
288 warn("%s not implemented.\n", __PRETTY_FUNCTION__);
289 return sc_time();
290}
291
292sc_time
293sc_time::from_string(const char *str)
294{
295 warn("%s not implemented.\n", __PRETTY_FUNCTION__);
296 return sc_time();
297}
298
299const sc_time
300operator + (const sc_time &a, const sc_time &b)
301{
302 return sc_time::from_value(a.value() + b.value());
303}
304
305const sc_time
306operator - (const sc_time &a, const sc_time &b)
307{
308 return sc_time::from_value(a.value() - b.value());
309}
310
311const sc_time
|
313operator * (const sc_time &, double)
| 312operator * (const sc_time &t, double d)
|
314{
| 313{
|
315 warn("%s not implemented.\n", __PRETTY_FUNCTION__);
316 return sc_time();
| 314 volatile double tmp = static_cast<double>(t.value()) * d + 0.5;
315 return sc_time::from_value(static_cast<int64_t>(tmp));
|
317}
318
319const sc_time
| 316}
317
318const sc_time
|
320operator * (double, const sc_time &)
| 319operator * (double d, const sc_time &t)
|
321{
| 320{
|
322 warn("%s not implemented.\n", __PRETTY_FUNCTION__);
323 return sc_time();
| 321 volatile double tmp = d * static_cast<double>(t.value()) + 0.5;
322 return sc_time::from_value(static_cast<int64_t>(tmp));
|
324}
325
326const sc_time
| 323}
324
325const sc_time
|
327operator / (const sc_time &, double)
| 326operator / (const sc_time &t, double d)
|
328{
| 327{
|
329 warn("%s not implemented.\n", __PRETTY_FUNCTION__);
330 return sc_time();
| 328 volatile double tmp = static_cast<double>(t.value()) / d + 0.5;
329 return sc_time::from_value(static_cast<int64_t>(tmp));
|
331}
332
333double
| 330}
331
332double
|
334operator / (const sc_time &, const sc_time &)
| 333operator / (const sc_time &t1, const sc_time &t2)
|
335{
| 334{
|
336 warn("%s not implemented.\n", __PRETTY_FUNCTION__);
337 return 0.0;
| 335 return t1.to_double() / t2.to_double();
|
338}
339
340std::ostream &
341operator << (std::ostream &os, const sc_time &t)
342{
343 t.print(os);
344 return os;
345}
346
347const sc_time SC_ZERO_TIME;
348
349void
350sc_set_time_resolution(double, sc_time_unit)
351{
352 warn("%s not implemented.\n", __PRETTY_FUNCTION__);
353}
354
355sc_time
356sc_get_time_resolution()
357{
358 warn("%s not implemented.\n", __PRETTY_FUNCTION__);
359 return sc_time();
360}
361
362const sc_time &
363sc_max_time()
364{
365 static const sc_time MaxScTime = sc_time::from_value(MaxTick);
366 return MaxScTime;
367}
368
369void
370sc_set_default_time_unit(double, sc_time_unit)
371{
372 warn("%s not implemented.\n", __PRETTY_FUNCTION__);
373}
374
375sc_time
376sc_get_default_time_unit()
377{
378 warn("%s not implemented.\n", __PRETTY_FUNCTION__);
379 return *(sc_time *)nullptr;
380}
381
382sc_time_tuple::sc_time_tuple(const sc_time &)
383{
384 warn("%s not implemented.\n", __PRETTY_FUNCTION__);
385}
386
387bool
388sc_time_tuple::has_value() const
389{
390 warn("%s not implemented.\n", __PRETTY_FUNCTION__);
391 return false;
392}
393
394sc_dt::uint64
395sc_time_tuple::value() const
396{
397 warn("%s not implemented.\n", __PRETTY_FUNCTION__);
398 return 0;
399}
400
401const char *
402sc_time_tuple::unit_symbol() const
403{
404 warn("%s not implemented.\n", __PRETTY_FUNCTION__);
405 return "";
406}
407
408double
409sc_time_tuple::to_double() const
410{
411 warn("%s not implemented.\n", __PRETTY_FUNCTION__);
412 return 0.0;
413}
414
415std::string
416sc_time_tuple::to_string() const
417{
418 warn("%s not implemented.\n", __PRETTY_FUNCTION__);
419 return "";
420}
421
422} // namespace sc_core
| 336}
337
338std::ostream &
339operator << (std::ostream &os, const sc_time &t)
340{
341 t.print(os);
342 return os;
343}
344
345const sc_time SC_ZERO_TIME;
346
347void
348sc_set_time_resolution(double, sc_time_unit)
349{
350 warn("%s not implemented.\n", __PRETTY_FUNCTION__);
351}
352
353sc_time
354sc_get_time_resolution()
355{
356 warn("%s not implemented.\n", __PRETTY_FUNCTION__);
357 return sc_time();
358}
359
360const sc_time &
361sc_max_time()
362{
363 static const sc_time MaxScTime = sc_time::from_value(MaxTick);
364 return MaxScTime;
365}
366
367void
368sc_set_default_time_unit(double, sc_time_unit)
369{
370 warn("%s not implemented.\n", __PRETTY_FUNCTION__);
371}
372
373sc_time
374sc_get_default_time_unit()
375{
376 warn("%s not implemented.\n", __PRETTY_FUNCTION__);
377 return *(sc_time *)nullptr;
378}
379
380sc_time_tuple::sc_time_tuple(const sc_time &)
381{
382 warn("%s not implemented.\n", __PRETTY_FUNCTION__);
383}
384
385bool
386sc_time_tuple::has_value() const
387{
388 warn("%s not implemented.\n", __PRETTY_FUNCTION__);
389 return false;
390}
391
392sc_dt::uint64
393sc_time_tuple::value() const
394{
395 warn("%s not implemented.\n", __PRETTY_FUNCTION__);
396 return 0;
397}
398
399const char *
400sc_time_tuple::unit_symbol() const
401{
402 warn("%s not implemented.\n", __PRETTY_FUNCTION__);
403 return "";
404}
405
406double
407sc_time_tuple::to_double() const
408{
409 warn("%s not implemented.\n", __PRETTY_FUNCTION__);
410 return 0.0;
411}
412
413std::string
414sc_time_tuple::to_string() const
415{
416 warn("%s not implemented.\n", __PRETTY_FUNCTION__);
417 return "";
418}
419
420} // namespace sc_core
|