sc_module.cc revision 13382:7db1e345834c 
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 <memory>
31#include <string>
32#include <vector>
33
34#include "systemc/core/event.hh"
35#include "systemc/core/kernel.hh"
36#include "systemc/core/module.hh"
37#include "systemc/core/object.hh"
38#include "systemc/core/port.hh"
39#include "systemc/core/process_types.hh"
40#include "systemc/core/sensitivity.hh"
41#include "systemc/ext/channel/sc_in.hh"
42#include "systemc/ext/channel/sc_inout.hh"
43#include "systemc/ext/channel/sc_out.hh"
44#include "systemc/ext/channel/sc_signal_in_if.hh"
45#include "systemc/ext/core/messages.hh"
46#include "systemc/ext/core/sc_module.hh"
47#include "systemc/ext/core/sc_module_name.hh"
48#include "systemc/ext/dt/bit/sc_logic.hh"
49#include "systemc/ext/utils/sc_report_handler.hh"
50
51namespace sc_gem5
52{
53
54Process *
55newMethodProcess(const char *name, ProcessFuncWrapper *func)
56{
57    Method *p = new Method(name, func);
58    if (::sc_core::sc_is_running()) {
59        std::string name = p->name();
60        delete p;
61        SC_REPORT_ERROR(sc_core::SC_ID_MODULE_METHOD_AFTER_START_,
62                name.c_str());
63        return nullptr;
64    }
65    scheduler.reg(p);
66    return p;
67}
68
69Process *
70newThreadProcess(const char *name, ProcessFuncWrapper *func)
71{
72    Thread *p = new Thread(name, func);
73    if (::sc_core::sc_is_running()) {
74        std::string name = p->name();
75        delete p;
76        SC_REPORT_ERROR(sc_core::SC_ID_MODULE_THREAD_AFTER_START_,
77                name.c_str());
78        return nullptr;
79    }
80    scheduler.reg(p);
81    return p;
82}
83
84Process *
85newCThreadProcess(const char *name, ProcessFuncWrapper *func)
86{
87    CThread *p = new CThread(name, func);
88    if (::sc_core::sc_is_running()) {
89        std::string name = p->name();
90        delete p;
91        SC_REPORT_ERROR(sc_core::SC_ID_MODULE_CTHREAD_AFTER_START_,
92                name.c_str());
93        return nullptr;
94    }
95    scheduler.reg(p);
96    p->dontInitialize(true);
97    return p;
98}
99
100} // namespace sc_gem5
101
102namespace sc_core
103{
104
105sc_bind_proxy::sc_bind_proxy() : _interface(nullptr), _port(nullptr) {}
106
107sc_bind_proxy::sc_bind_proxy(sc_interface &_interface) :
108    _interface(&_interface), _port(nullptr)
109{}
110
111sc_bind_proxy::sc_bind_proxy(sc_port_base &_port) :
112    _interface(nullptr), _port(&_port)
113{}
114
115const sc_bind_proxy SC_BIND_PROXY_NIL;
116
117sc_module::~sc_module() { delete _gem5_module; }
118
119void
120sc_module::operator () (const sc_bind_proxy &p001,
121                        const sc_bind_proxy &p002,
122                        const sc_bind_proxy &p003,
123                        const sc_bind_proxy &p004,
124                        const sc_bind_proxy &p005,
125                        const sc_bind_proxy &p006,
126                        const sc_bind_proxy &p007,
127                        const sc_bind_proxy &p008,
128                        const sc_bind_proxy &p009,
129                        const sc_bind_proxy &p010,
130                        const sc_bind_proxy &p011,
131                        const sc_bind_proxy &p012,
132                        const sc_bind_proxy &p013,
133                        const sc_bind_proxy &p014,
134                        const sc_bind_proxy &p015,
135                        const sc_bind_proxy &p016,
136                        const sc_bind_proxy &p017,
137                        const sc_bind_proxy &p018,
138                        const sc_bind_proxy &p019,
139                        const sc_bind_proxy &p020,
140                        const sc_bind_proxy &p021,
141                        const sc_bind_proxy &p022,
142                        const sc_bind_proxy &p023,
143                        const sc_bind_proxy &p024,
144                        const sc_bind_proxy &p025,
145                        const sc_bind_proxy &p026,
146                        const sc_bind_proxy &p027,
147                        const sc_bind_proxy &p028,
148                        const sc_bind_proxy &p029,
149                        const sc_bind_proxy &p030,
150                        const sc_bind_proxy &p031,
151                        const sc_bind_proxy &p032,
152                        const sc_bind_proxy &p033,
153                        const sc_bind_proxy &p034,
154                        const sc_bind_proxy &p035,
155                        const sc_bind_proxy &p036,
156                        const sc_bind_proxy &p037,
157                        const sc_bind_proxy &p038,
158                        const sc_bind_proxy &p039,
159                        const sc_bind_proxy &p040,
160                        const sc_bind_proxy &p041,
161                        const sc_bind_proxy &p042,
162                        const sc_bind_proxy &p043,
163                        const sc_bind_proxy &p044,
164                        const sc_bind_proxy &p045,
165                        const sc_bind_proxy &p046,
166                        const sc_bind_proxy &p047,
167                        const sc_bind_proxy &p048,
168                        const sc_bind_proxy &p049,
169                        const sc_bind_proxy &p050,
170                        const sc_bind_proxy &p051,
171                        const sc_bind_proxy &p052,
172                        const sc_bind_proxy &p053,
173                        const sc_bind_proxy &p054,
174                        const sc_bind_proxy &p055,
175                        const sc_bind_proxy &p056,
176                        const sc_bind_proxy &p057,
177                        const sc_bind_proxy &p058,
178                        const sc_bind_proxy &p059,
179                        const sc_bind_proxy &p060,
180                        const sc_bind_proxy &p061,
181                        const sc_bind_proxy &p062,
182                        const sc_bind_proxy &p063,
183                        const sc_bind_proxy &p064)
184{
185    std::vector<const ::sc_core::sc_bind_proxy *> proxies;
186    auto insert = [&proxies](const ::sc_core::sc_bind_proxy &p) -> bool {
187        if (!p.port() && !p.interface())
188            return false;
189        proxies.push_back(&p);
190        return true;
191    };
192    insert(p001) && insert(p002) && insert(p003) && insert(p004) &&
193    insert(p005) && insert(p006) && insert(p007) && insert(p008) &&
194    insert(p009) && insert(p010) && insert(p011) && insert(p012) &&
195    insert(p013) && insert(p014) && insert(p015) && insert(p016) &&
196    insert(p017) && insert(p018) && insert(p019) && insert(p020) &&
197    insert(p021) && insert(p022) && insert(p023) && insert(p024) &&
198    insert(p025) && insert(p026) && insert(p027) && insert(p028) &&
199    insert(p029) && insert(p030) && insert(p031) && insert(p032) &&
200    insert(p033) && insert(p034) && insert(p035) && insert(p036) &&
201    insert(p037) && insert(p038) && insert(p039) && insert(p040) &&
202    insert(p041) && insert(p042) && insert(p043) && insert(p044) &&
203    insert(p045) && insert(p046) && insert(p047) && insert(p048) &&
204    insert(p049) && insert(p050) && insert(p051) && insert(p052) &&
205    insert(p053) && insert(p054) && insert(p055) && insert(p056) &&
206    insert(p057) && insert(p058) && insert(p059) && insert(p060) &&
207    insert(p061) && insert(p062) && insert(p063) && insert(p064);
208    _gem5_module->bindPorts(proxies);
209}
210
211sc_module &
212sc_module::operator << (sc_interface &iface)
213{
214    (*this)(iface);
215    return *this;
216}
217
218sc_module &
219sc_module::operator << (sc_port_base &pb)
220{
221    (*this)(pb);
222    return *this;
223}
224
225sc_module &
226sc_module::operator , (sc_interface &iface)
227{
228    (*this)(iface);
229    return *this;
230}
231
232sc_module &
233sc_module::operator , (sc_port_base &pb)
234{
235    (*this)(pb);
236    return *this;
237}
238
239const std::vector<sc_object *> &
240sc_module::get_child_objects() const
241{
242    return _gem5_module->obj()->get_child_objects();
243}
244
245const std::vector<sc_event *> &
246sc_module::get_child_events() const
247{
248    return _gem5_module->obj()->get_child_events();
249}
250
251sc_module::sc_module() :
252    sc_object(sc_gem5::newModuleChecked()->name()),
253    _gem5_module(sc_gem5::currentModule())
254{
255    if (sc_is_running())
256        SC_REPORT_ERROR(SC_ID_INSERT_MODULE_, "simulation running");
257    if (::sc_gem5::scheduler.elaborationDone())
258        SC_REPORT_ERROR(SC_ID_INSERT_MODULE_, "elaboration done");
259}
260
261sc_module::sc_module(const sc_module_name &) : sc_module() {}
262sc_module::sc_module(const char *_name) : sc_module(sc_module_name(_name))
263{
264    _gem5_module->deprecatedConstructor();
265    SC_REPORT_WARNING(SC_ID_BAD_SC_MODULE_CONSTRUCTOR_, _name);
266}
267sc_module::sc_module(const std::string &_name) :
268    sc_module(sc_module_name(_name.c_str()))
269{
270    _gem5_module->deprecatedConstructor();
271    SC_REPORT_WARNING(SC_ID_BAD_SC_MODULE_CONSTRUCTOR_, _name.c_str());
272}
273
274void
275sc_module::end_module()
276{
277    _gem5_module->endModule();
278}
279
280void
281sc_module::reset_signal_is(const sc_in<bool> &port, bool val)
282{
283    ::sc_gem5::newReset(&port, ::sc_gem5::Process::newest(), true, val);
284}
285
286void
287sc_module::reset_signal_is(const sc_inout<bool> &port, bool val)
288{
289    ::sc_gem5::newReset(&port, ::sc_gem5::Process::newest(), true, val);
290}
291
292void
293sc_module::reset_signal_is(const sc_out<bool> &port, bool val)
294{
295    ::sc_gem5::newReset(&port, ::sc_gem5::Process::newest(), true, val);
296}
297
298void
299sc_module::reset_signal_is(const sc_signal_in_if<bool> &signal, bool val)
300{
301    ::sc_gem5::newReset(&signal, ::sc_gem5::Process::newest(), true, val);
302}
303
304
305void
306sc_module::async_reset_signal_is(const sc_in<bool> &port, bool val)
307{
308    ::sc_gem5::newReset(&port, ::sc_gem5::Process::newest(), false, val);
309}
310
311void
312sc_module::async_reset_signal_is(const sc_inout<bool> &port, bool val)
313{
314    ::sc_gem5::newReset(&port, ::sc_gem5::Process::newest(), false, val);
315}
316
317void
318sc_module::async_reset_signal_is(const sc_out<bool> &port, bool val)
319{
320    ::sc_gem5::newReset(&port, ::sc_gem5::Process::newest(), false, val);
321}
322
323void
324sc_module::async_reset_signal_is(const sc_signal_in_if<bool> &signal, bool val)
325{
326    ::sc_gem5::newReset(&signal, ::sc_gem5::Process::newest(), false, val);
327}
328
329
330void
331sc_module::dont_initialize()
332{
333    ::sc_gem5::Process *p = ::sc_gem5::Process::newest();
334    if (p->procKind() == SC_CTHREAD_PROC_)
335        SC_REPORT_WARNING(SC_ID_DONT_INITIALIZE_, "");
336    p->dontInitialize(true);
337}
338
339void
340sc_module::set_stack_size(size_t size)
341{
342    ::sc_gem5::Process::newest()->setStackSize(size);
343}
344
345
346void sc_module::next_trigger() { ::sc_core::next_trigger(); }
347
348void
349sc_module::next_trigger(const sc_event &e)
350{
351    ::sc_core::next_trigger(e);
352}
353
354void
355sc_module::next_trigger(const sc_event_or_list &eol)
356{
357    ::sc_core::next_trigger(eol);
358}
359
360void
361sc_module::next_trigger(const sc_event_and_list &eal)
362{
363    ::sc_core::next_trigger(eal);
364}
365
366void
367sc_module::next_trigger(const sc_time &t)
368{
369    ::sc_core::next_trigger(t);
370}
371
372void
373sc_module::next_trigger(double d, sc_time_unit u)
374{
375    ::sc_core::next_trigger(d, u);
376}
377
378void
379sc_module::next_trigger(const sc_time &t, const sc_event &e)
380{
381    ::sc_core::next_trigger(t, e);
382}
383
384void
385sc_module::next_trigger(double d, sc_time_unit u, const sc_event &e)
386{
387    ::sc_core::next_trigger(d, u, e);
388}
389
390void
391sc_module::next_trigger(const sc_time &t, const sc_event_or_list &eol)
392{
393    ::sc_core::next_trigger(t, eol);
394}
395
396void
397sc_module::next_trigger(double d, sc_time_unit u, const sc_event_or_list &eol)
398{
399    ::sc_core::next_trigger(d, u, eol);
400}
401
402void
403sc_module::next_trigger(const sc_time &t, const sc_event_and_list &eal)
404{
405    ::sc_core::next_trigger(t, eal);
406}
407
408void
409sc_module::next_trigger(double d, sc_time_unit u, const sc_event_and_list &eal)
410{
411    ::sc_core::next_trigger(d, u, eal);
412}
413
414
415bool
416sc_module::timed_out()
417{
418    return ::sc_core::timed_out();
419}
420
421
422void
423sc_module::wait()
424{
425    ::sc_core::wait();
426}
427
428void
429sc_module::wait(int i)
430{
431    ::sc_core::wait(i);
432}
433
434void
435sc_module::wait(const sc_event &e)
436{
437    ::sc_core::wait(e);
438}
439
440void
441sc_module::wait(const sc_event_or_list &eol)
442{
443    ::sc_core::wait(eol);
444}
445
446void
447sc_module::wait(const sc_event_and_list &eal)
448{
449    ::sc_core::wait(eal);
450}
451
452void
453sc_module::wait(const sc_time &t)
454{
455    ::sc_core::wait(t);
456}
457
458void
459sc_module::wait(double d, sc_time_unit u)
460{
461    ::sc_core::wait(d, u);
462}
463
464void
465sc_module::wait(const sc_time &t, const sc_event &e)
466{
467    ::sc_core::wait(t, e);
468}
469
470void
471sc_module::wait(double d, sc_time_unit u, const sc_event &e)
472{
473    ::sc_core::wait(d, u, e);
474}
475
476void
477sc_module::wait(const sc_time &t, const sc_event_or_list &eol)
478{
479    ::sc_core::wait(t, eol);
480}
481
482void
483sc_module::wait(double d, sc_time_unit u, const sc_event_or_list &eol)
484{
485    ::sc_core::wait(d, u, eol);
486}
487
488void
489sc_module::wait(const sc_time &t, const sc_event_and_list &eal)
490{
491    ::sc_core::wait(t, eal);
492}
493
494void
495sc_module::wait(double d, sc_time_unit u, const sc_event_and_list &eal)
496{
497    ::sc_core::wait(d, u, eal);
498}
499
500
501void
502sc_module::halt()
503{
504    ::sc_core::halt();
505}
506
507void
508sc_module::at_posedge(const sc_signal_in_if<bool> &s)
509{
510    ::sc_core::at_posedge(s);
511}
512
513void
514sc_module::at_posedge(const sc_signal_in_if<sc_dt::sc_logic> &s)
515{
516    ::sc_core::at_posedge(s);
517}
518
519void
520sc_module::at_negedge(const sc_signal_in_if<bool> &s)
521{
522    ::sc_core::at_negedge(s);
523}
524
525void
526sc_module::at_negedge(const sc_signal_in_if<sc_dt::sc_logic> &s)
527{
528    ::sc_core::at_negedge(s);
529}
530
531
532void
533next_trigger()
534{
535    sc_gem5::Process *p = sc_gem5::scheduler.current();
536    p->cancelTimeout();
537    p->clearDynamic();
538}
539
540void
541next_trigger(const sc_event &e)
542{
543    sc_gem5::Process *p = sc_gem5::scheduler.current();
544    p->cancelTimeout();
545    ::sc_gem5::newDynamicSensitivityEvent(p, &e);
546}
547
548void
549next_trigger(const sc_event_or_list &eol)
550{
551    sc_gem5::Process *p = sc_gem5::scheduler.current();
552    p->cancelTimeout();
553    ::sc_gem5::newDynamicSensitivityEventOrList(p, &eol);
554}
555
556void
557next_trigger(const sc_event_and_list &eal)
558{
559    sc_gem5::Process *p = sc_gem5::scheduler.current();
560    p->cancelTimeout();
561    ::sc_gem5::newDynamicSensitivityEventAndList(p, &eal);
562}
563
564void
565next_trigger(const sc_time &t)
566{
567    sc_gem5::Process *p = sc_gem5::scheduler.current();
568    p->setTimeout(t);
569    p->clearDynamic();
570}
571
572void
573next_trigger(double d, sc_time_unit u)
574{
575    next_trigger(sc_time(d, u));
576}
577
578void
579next_trigger(const sc_time &t, const sc_event &e)
580{
581    sc_gem5::Process *p = sc_gem5::scheduler.current();
582    p->setTimeout(t);
583    ::sc_gem5::newDynamicSensitivityEvent(p, &e);
584}
585
586void
587next_trigger(double d, sc_time_unit u, const sc_event &e)
588{
589    next_trigger(sc_time(d, u), e);
590}
591
592void
593next_trigger(const sc_time &t, const sc_event_or_list &eol)
594{
595    sc_gem5::Process *p = sc_gem5::scheduler.current();
596    p->setTimeout(t);
597    ::sc_gem5::newDynamicSensitivityEventOrList(p, &eol);
598}
599
600void
601next_trigger(double d, sc_time_unit u, const sc_event_or_list &eol)
602{
603    next_trigger(sc_time(d, u), eol);
604}
605
606void
607next_trigger(const sc_time &t, const sc_event_and_list &eal)
608{
609    sc_gem5::Process *p = sc_gem5::scheduler.current();
610    p->setTimeout(t);
611    ::sc_gem5::newDynamicSensitivityEventAndList(p, &eal);
612}
613
614void
615next_trigger(double d, sc_time_unit u, const sc_event_and_list &eal)
616{
617    next_trigger(sc_time(d, u), eal);
618}
619
620bool
621timed_out()
622{
623    ::sc_gem5::Process *p = sc_gem5::scheduler.current();
624    if (!p)
625        return false;
626    else
627        return p->timedOut();
628}
629
630
631namespace
632{
633
634bool
635waitErrorCheck(sc_gem5::Process *p)
636{
637    if (p->procKind() == SC_METHOD_PROC_) {
638        SC_REPORT_ERROR(SC_ID_WAIT_NOT_ALLOWED_,
639                "\n        in SC_METHODs use next_trigger() instead");
640        return true;
641    }
642    return false;
643}
644
645} // anonymous namespace
646
647void
648wait()
649{
650    sc_gem5::Process *p = sc_gem5::scheduler.current();
651    if (waitErrorCheck(p))
652        return;
653    p->cancelTimeout();
654    p->clearDynamic();
655    sc_gem5::scheduler.yield();
656}
657
658void
659wait(int n)
660{
661    if (n <= 0) {
662        std::string msg = csprintf("n = %d", n);
663        SC_REPORT_ERROR(SC_ID_WAIT_N_INVALID_, msg.c_str());
664    }
665    sc_gem5::Process *p = sc_gem5::scheduler.current();
666    p->waitCount(n - 1);
667    wait();
668}
669
670void
671wait(const sc_event &e)
672{
673    sc_gem5::Process *p = sc_gem5::scheduler.current();
674    if (waitErrorCheck(p))
675        return;
676    p->cancelTimeout();
677    ::sc_gem5::newDynamicSensitivityEvent(p, &e);
678    sc_gem5::scheduler.yield();
679}
680
681void
682wait(const sc_event_or_list &eol)
683{
684    sc_gem5::Process *p = sc_gem5::scheduler.current();
685    if (waitErrorCheck(p))
686        return;
687    p->cancelTimeout();
688    ::sc_gem5::newDynamicSensitivityEventOrList(p, &eol);
689    sc_gem5::scheduler.yield();
690}
691
692void
693wait(const sc_event_and_list &eal)
694{
695    sc_gem5::Process *p = sc_gem5::scheduler.current();
696    if (waitErrorCheck(p))
697        return;
698    p->cancelTimeout();
699    ::sc_gem5::newDynamicSensitivityEventAndList(p, &eal);
700    sc_gem5::scheduler.yield();
701}
702
703void
704wait(const sc_time &t)
705{
706    sc_gem5::Process *p = sc_gem5::scheduler.current();
707    if (waitErrorCheck(p))
708        return;
709    p->setTimeout(t);
710    p->clearDynamic();
711    sc_gem5::scheduler.yield();
712}
713
714void
715wait(double d, sc_time_unit u)
716{
717    wait(sc_time(d, u));
718}
719
720void
721wait(const sc_time &t, const sc_event &e)
722{
723    sc_gem5::Process *p = sc_gem5::scheduler.current();
724    if (waitErrorCheck(p))
725        return;
726    p->setTimeout(t);
727    ::sc_gem5::newDynamicSensitivityEvent(p, &e);
728    sc_gem5::scheduler.yield();
729}
730
731void
732wait(double d, sc_time_unit u, const sc_event &e)
733{
734    wait(sc_time(d, u), e);
735}
736
737void
738wait(const sc_time &t, const sc_event_or_list &eol)
739{
740    sc_gem5::Process *p = sc_gem5::scheduler.current();
741    if (waitErrorCheck(p))
742        return;
743    p->setTimeout(t);
744    ::sc_gem5::newDynamicSensitivityEventOrList(p, &eol);
745    sc_gem5::scheduler.yield();
746}
747
748void
749wait(double d, sc_time_unit u, const sc_event_or_list &eol)
750{
751    wait(sc_time(d, u), eol);
752}
753
754void
755wait(const sc_time &t, const sc_event_and_list &eal)
756{
757    sc_gem5::Process *p = sc_gem5::scheduler.current();
758    if (waitErrorCheck(p))
759        return;
760    p->setTimeout(t);
761    ::sc_gem5::newDynamicSensitivityEventAndList(p, &eal);
762    sc_gem5::scheduler.yield();
763}
764
765void
766wait(double d, sc_time_unit u, const sc_event_and_list &eal)
767{
768    wait(sc_time(d, u), eal);
769}
770
771void
772halt()
773{
774    ::sc_core::wait();
775    throw ::sc_gem5::ScHalt();
776}
777
778void
779at_posedge(const sc_signal_in_if<bool> &s)
780{
781    while (s.read())
782        wait();
783    while (!s.read())
784        wait();
785}
786
787void
788at_posedge(const sc_signal_in_if<sc_dt::sc_logic> &s)
789{
790    while (s.read() == sc_dt::Log_1)
791        wait();
792    while (s.read() == sc_dt::Log_0)
793        wait();
794}
795
796void
797at_negedge(const sc_signal_in_if<bool> &s)
798{
799    while (!s.read())
800        wait();
801    while (s.read())
802        wait();
803}
804
805void
806at_negedge(const sc_signal_in_if<sc_dt::sc_logic> &s)
807{
808    while (s.read() == sc_dt::Log_0)
809        wait();
810    while (s.read() == sc_dt::Log_1)
811        wait();
812}
813
814const char *
815sc_gen_unique_name(const char *seed)
816{
817    if (!seed || seed[0] == '\0') {
818        SC_REPORT_ERROR(SC_ID_GEN_UNIQUE_NAME_, "");
819        seed = "unnamed";
820    }
821
822    auto mod = sc_gem5::pickParentModule();
823    if (mod)
824        return mod->uniqueName(seed);
825
826    sc_gem5::Process *p = sc_gem5::scheduler.current();
827    if (p)
828        return p->uniqueName(seed);
829
830    return ::sc_gem5::globalNameGen.gen(seed);
831}
832
833bool
834sc_hierarchical_name_exists(const char *name)
835{
836    return sc_gem5::findEvent(name) != sc_gem5::allEvents.end() ||
837        ::sc_gem5::findObject(name, sc_gem5::allObjects);
838}
839
840bool
841sc_start_of_simulation_invoked()
842{
843    return ::sc_gem5::kernel->startOfSimulationComplete();
844}
845
846bool
847sc_end_of_simulation_invoked()
848{
849    return ::sc_gem5::kernel->endOfSimulationComplete();
850}
851
852sc_module *
853sc_module_sc_new(sc_module *mod)
854{
855    static std::vector<std::unique_ptr<sc_module> > modules;
856    modules.emplace_back(mod);
857    return mod;
858}
859
860} // namespace sc_core
861