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 "base/logging.hh"
35#include "systemc/core/event.hh"
36#include "systemc/core/kernel.hh"
37#include "systemc/core/module.hh"
38#include "systemc/core/object.hh"
39#include "systemc/core/port.hh"
40#include "systemc/core/process_types.hh"
41#include "systemc/core/sensitivity.hh"
42#include "systemc/ext/channel/sc_in.hh"
43#include "systemc/ext/channel/sc_inout.hh"
44#include "systemc/ext/channel/sc_out.hh"
45#include "systemc/ext/channel/sc_signal_in_if.hh"
46#include "systemc/ext/core/messages.hh"
47#include "systemc/ext/core/sc_module.hh"
48#include "systemc/ext/core/sc_module_name.hh"
49#include "systemc/ext/dt/bit/sc_logic.hh"
50#include "systemc/ext/utils/sc_report_handler.hh"
51
52namespace sc_gem5
53{
54
55Process *
56newMethodProcess(const char *name, ProcessFuncWrapper *func)
57{
58    Method *p = new Method(name, func);
59    if (::sc_core::sc_is_running()) {
60        std::string name = p->name();
61        delete p;
62        SC_REPORT_ERROR(sc_core::SC_ID_MODULE_METHOD_AFTER_START_,
63                name.c_str());
64        return nullptr;
65    }
66    scheduler.reg(p);
67    return p;
68}
69
70Process *
71newThreadProcess(const char *name, ProcessFuncWrapper *func)
72{
73    Thread *p = new Thread(name, func);
74    if (::sc_core::sc_is_running()) {
75        std::string name = p->name();
76        delete p;
77        SC_REPORT_ERROR(sc_core::SC_ID_MODULE_THREAD_AFTER_START_,
78                name.c_str());
79        return nullptr;
80    }
81    scheduler.reg(p);
82    return p;
83}
84
85Process *
86newCThreadProcess(const char *name, ProcessFuncWrapper *func)
87{
88    CThread *p = new CThread(name, func);
89    if (::sc_core::sc_is_running()) {
90        std::string name = p->name();
91        delete p;
92        SC_REPORT_ERROR(sc_core::SC_ID_MODULE_CTHREAD_AFTER_START_,
93                name.c_str());
94        return nullptr;
95    }
96    scheduler.reg(p);
97    p->dontInitialize(true);
98    return p;
99}
100
101} // namespace sc_gem5
102
103namespace sc_core
104{
105
106sc_bind_proxy::sc_bind_proxy() : _interface(nullptr), _port(nullptr) {}
107
108sc_bind_proxy::sc_bind_proxy(sc_interface &_interface) :
109    _interface(&_interface), _port(nullptr)
110{}
111
112sc_bind_proxy::sc_bind_proxy(sc_port_base &_port) :
113    _interface(nullptr), _port(&_port)
114{}
115
116const sc_bind_proxy SC_BIND_PROXY_NIL;
117
118::Port &
119sc_module::gem5_getPort(const std::string &if_name, int idx)
120{
121    fatal("%s does not have any port named %s\n", name(), if_name);
122}
123
124sc_module::~sc_module() { delete _gem5_module; }
125
126void
127sc_module::operator () (const sc_bind_proxy &p001,
128                        const sc_bind_proxy &p002,
129                        const sc_bind_proxy &p003,
130                        const sc_bind_proxy &p004,
131                        const sc_bind_proxy &p005,
132                        const sc_bind_proxy &p006,
133                        const sc_bind_proxy &p007,
134                        const sc_bind_proxy &p008,
135                        const sc_bind_proxy &p009,
136                        const sc_bind_proxy &p010,
137                        const sc_bind_proxy &p011,
138                        const sc_bind_proxy &p012,
139                        const sc_bind_proxy &p013,
140                        const sc_bind_proxy &p014,
141                        const sc_bind_proxy &p015,
142                        const sc_bind_proxy &p016,
143                        const sc_bind_proxy &p017,
144                        const sc_bind_proxy &p018,
145                        const sc_bind_proxy &p019,
146                        const sc_bind_proxy &p020,
147                        const sc_bind_proxy &p021,
148                        const sc_bind_proxy &p022,
149                        const sc_bind_proxy &p023,
150                        const sc_bind_proxy &p024,
151                        const sc_bind_proxy &p025,
152                        const sc_bind_proxy &p026,
153                        const sc_bind_proxy &p027,
154                        const sc_bind_proxy &p028,
155                        const sc_bind_proxy &p029,
156                        const sc_bind_proxy &p030,
157                        const sc_bind_proxy &p031,
158                        const sc_bind_proxy &p032,
159                        const sc_bind_proxy &p033,
160                        const sc_bind_proxy &p034,
161                        const sc_bind_proxy &p035,
162                        const sc_bind_proxy &p036,
163                        const sc_bind_proxy &p037,
164                        const sc_bind_proxy &p038,
165                        const sc_bind_proxy &p039,
166                        const sc_bind_proxy &p040,
167                        const sc_bind_proxy &p041,
168                        const sc_bind_proxy &p042,
169                        const sc_bind_proxy &p043,
170                        const sc_bind_proxy &p044,
171                        const sc_bind_proxy &p045,
172                        const sc_bind_proxy &p046,
173                        const sc_bind_proxy &p047,
174                        const sc_bind_proxy &p048,
175                        const sc_bind_proxy &p049,
176                        const sc_bind_proxy &p050,
177                        const sc_bind_proxy &p051,
178                        const sc_bind_proxy &p052,
179                        const sc_bind_proxy &p053,
180                        const sc_bind_proxy &p054,
181                        const sc_bind_proxy &p055,
182                        const sc_bind_proxy &p056,
183                        const sc_bind_proxy &p057,
184                        const sc_bind_proxy &p058,
185                        const sc_bind_proxy &p059,
186                        const sc_bind_proxy &p060,
187                        const sc_bind_proxy &p061,
188                        const sc_bind_proxy &p062,
189                        const sc_bind_proxy &p063,
190                        const sc_bind_proxy &p064)
191{
192    std::vector<const ::sc_core::sc_bind_proxy *> proxies;
193    auto insert = [&proxies](const ::sc_core::sc_bind_proxy &p) -> bool {
194        if (!p.port() && !p.interface())
195            return false;
196        proxies.push_back(&p);
197        return true;
198    };
199    insert(p001) && insert(p002) && insert(p003) && insert(p004) &&
200    insert(p005) && insert(p006) && insert(p007) && insert(p008) &&
201    insert(p009) && insert(p010) && insert(p011) && insert(p012) &&
202    insert(p013) && insert(p014) && insert(p015) && insert(p016) &&
203    insert(p017) && insert(p018) && insert(p019) && insert(p020) &&
204    insert(p021) && insert(p022) && insert(p023) && insert(p024) &&
205    insert(p025) && insert(p026) && insert(p027) && insert(p028) &&
206    insert(p029) && insert(p030) && insert(p031) && insert(p032) &&
207    insert(p033) && insert(p034) && insert(p035) && insert(p036) &&
208    insert(p037) && insert(p038) && insert(p039) && insert(p040) &&
209    insert(p041) && insert(p042) && insert(p043) && insert(p044) &&
210    insert(p045) && insert(p046) && insert(p047) && insert(p048) &&
211    insert(p049) && insert(p050) && insert(p051) && insert(p052) &&
212    insert(p053) && insert(p054) && insert(p055) && insert(p056) &&
213    insert(p057) && insert(p058) && insert(p059) && insert(p060) &&
214    insert(p061) && insert(p062) && insert(p063) && insert(p064);
215    _gem5_module->bindPorts(proxies);
216}
217
218sc_module &
219sc_module::operator << (sc_interface &iface)
220{
221    (*this)(iface);
222    return *this;
223}
224
225sc_module &
226sc_module::operator << (sc_port_base &pb)
227{
228    (*this)(pb);
229    return *this;
230}
231
232sc_module &
233sc_module::operator , (sc_interface &iface)
234{
235    (*this)(iface);
236    return *this;
237}
238
239sc_module &
240sc_module::operator , (sc_port_base &pb)
241{
242    (*this)(pb);
243    return *this;
244}
245
246const std::vector<sc_object *> &
247sc_module::get_child_objects() const
248{
249    return _gem5_module->obj()->get_child_objects();
250}
251
252const std::vector<sc_event *> &
253sc_module::get_child_events() const
254{
255    return _gem5_module->obj()->get_child_events();
256}
257
258sc_module::sc_module() :
259    sc_object(sc_gem5::newModuleChecked()->name()),
260    _gem5_module(sc_gem5::currentModule())
261{
262    if (sc_is_running())
263        SC_REPORT_ERROR(SC_ID_INSERT_MODULE_, "simulation running");
264    if (::sc_gem5::scheduler.elaborationDone())
265        SC_REPORT_ERROR(SC_ID_INSERT_MODULE_, "elaboration done");
266}
267
268sc_module::sc_module(const sc_module_name &) : sc_module() {}
269sc_module::sc_module(const char *_name) : sc_module(sc_module_name(_name))
270{
271    _gem5_module->deprecatedConstructor();
272    SC_REPORT_WARNING(SC_ID_BAD_SC_MODULE_CONSTRUCTOR_, _name);
273}
274sc_module::sc_module(const std::string &_name) :
275    sc_module(sc_module_name(_name.c_str()))
276{
277    _gem5_module->deprecatedConstructor();
278    SC_REPORT_WARNING(SC_ID_BAD_SC_MODULE_CONSTRUCTOR_, _name.c_str());
279}
280
281void
282sc_module::end_module()
283{
284    _gem5_module->endModule();
285}
286
287void
288sc_module::reset_signal_is(const sc_in<bool> &port, bool val)
289{
290    ::sc_gem5::newReset(&port, ::sc_gem5::Process::newest(), true, val);
291}
292
293void
294sc_module::reset_signal_is(const sc_inout<bool> &port, bool val)
295{
296    ::sc_gem5::newReset(&port, ::sc_gem5::Process::newest(), true, val);
297}
298
299void
300sc_module::reset_signal_is(const sc_out<bool> &port, bool val)
301{
302    ::sc_gem5::newReset(&port, ::sc_gem5::Process::newest(), true, val);
303}
304
305void
306sc_module::reset_signal_is(const sc_signal_in_if<bool> &signal, bool val)
307{
308    ::sc_gem5::newReset(&signal, ::sc_gem5::Process::newest(), true, val);
309}
310
311
312void
313sc_module::async_reset_signal_is(const sc_in<bool> &port, bool val)
314{
315    ::sc_gem5::newReset(&port, ::sc_gem5::Process::newest(), false, val);
316}
317
318void
319sc_module::async_reset_signal_is(const sc_inout<bool> &port, bool val)
320{
321    ::sc_gem5::newReset(&port, ::sc_gem5::Process::newest(), false, val);
322}
323
324void
325sc_module::async_reset_signal_is(const sc_out<bool> &port, bool val)
326{
327    ::sc_gem5::newReset(&port, ::sc_gem5::Process::newest(), false, val);
328}
329
330void
331sc_module::async_reset_signal_is(const sc_signal_in_if<bool> &signal, bool val)
332{
333    ::sc_gem5::newReset(&signal, ::sc_gem5::Process::newest(), false, val);
334}
335
336
337void
338sc_module::dont_initialize()
339{
340    ::sc_gem5::Process *p = ::sc_gem5::Process::newest();
341    if (p->procKind() == SC_CTHREAD_PROC_)
342        SC_REPORT_WARNING(SC_ID_DONT_INITIALIZE_, "");
343    p->dontInitialize(true);
344}
345
346void
347sc_module::set_stack_size(size_t size)
348{
349    ::sc_gem5::Process::newest()->setStackSize(size);
350}
351
352
353void sc_module::next_trigger() { ::sc_core::next_trigger(); }
354
355void
356sc_module::next_trigger(const sc_event &e)
357{
358    ::sc_core::next_trigger(e);
359}
360
361void
362sc_module::next_trigger(const sc_event_or_list &eol)
363{
364    ::sc_core::next_trigger(eol);
365}
366
367void
368sc_module::next_trigger(const sc_event_and_list &eal)
369{
370    ::sc_core::next_trigger(eal);
371}
372
373void
374sc_module::next_trigger(const sc_time &t)
375{
376    ::sc_core::next_trigger(t);
377}
378
379void
380sc_module::next_trigger(double d, sc_time_unit u)
381{
382    ::sc_core::next_trigger(d, u);
383}
384
385void
386sc_module::next_trigger(const sc_time &t, const sc_event &e)
387{
388    ::sc_core::next_trigger(t, e);
389}
390
391void
392sc_module::next_trigger(double d, sc_time_unit u, const sc_event &e)
393{
394    ::sc_core::next_trigger(d, u, e);
395}
396
397void
398sc_module::next_trigger(const sc_time &t, const sc_event_or_list &eol)
399{
400    ::sc_core::next_trigger(t, eol);
401}
402
403void
404sc_module::next_trigger(double d, sc_time_unit u, const sc_event_or_list &eol)
405{
406    ::sc_core::next_trigger(d, u, eol);
407}
408
409void
410sc_module::next_trigger(const sc_time &t, const sc_event_and_list &eal)
411{
412    ::sc_core::next_trigger(t, eal);
413}
414
415void
416sc_module::next_trigger(double d, sc_time_unit u, const sc_event_and_list &eal)
417{
418    ::sc_core::next_trigger(d, u, eal);
419}
420
421
422bool
423sc_module::timed_out()
424{
425    return ::sc_core::timed_out();
426}
427
428
429void
430sc_module::wait()
431{
432    ::sc_core::wait();
433}
434
435void
436sc_module::wait(int i)
437{
438    ::sc_core::wait(i);
439}
440
441void
442sc_module::wait(const sc_event &e)
443{
444    ::sc_core::wait(e);
445}
446
447void
448sc_module::wait(const sc_event_or_list &eol)
449{
450    ::sc_core::wait(eol);
451}
452
453void
454sc_module::wait(const sc_event_and_list &eal)
455{
456    ::sc_core::wait(eal);
457}
458
459void
460sc_module::wait(const sc_time &t)
461{
462    ::sc_core::wait(t);
463}
464
465void
466sc_module::wait(double d, sc_time_unit u)
467{
468    ::sc_core::wait(d, u);
469}
470
471void
472sc_module::wait(const sc_time &t, const sc_event &e)
473{
474    ::sc_core::wait(t, e);
475}
476
477void
478sc_module::wait(double d, sc_time_unit u, const sc_event &e)
479{
480    ::sc_core::wait(d, u, e);
481}
482
483void
484sc_module::wait(const sc_time &t, const sc_event_or_list &eol)
485{
486    ::sc_core::wait(t, eol);
487}
488
489void
490sc_module::wait(double d, sc_time_unit u, const sc_event_or_list &eol)
491{
492    ::sc_core::wait(d, u, eol);
493}
494
495void
496sc_module::wait(const sc_time &t, const sc_event_and_list &eal)
497{
498    ::sc_core::wait(t, eal);
499}
500
501void
502sc_module::wait(double d, sc_time_unit u, const sc_event_and_list &eal)
503{
504    ::sc_core::wait(d, u, eal);
505}
506
507
508void
509sc_module::halt()
510{
511    ::sc_core::halt();
512}
513
514void
515sc_module::at_posedge(const sc_signal_in_if<bool> &s)
516{
517    ::sc_core::at_posedge(s);
518}
519
520void
521sc_module::at_posedge(const sc_signal_in_if<sc_dt::sc_logic> &s)
522{
523    ::sc_core::at_posedge(s);
524}
525
526void
527sc_module::at_negedge(const sc_signal_in_if<bool> &s)
528{
529    ::sc_core::at_negedge(s);
530}
531
532void
533sc_module::at_negedge(const sc_signal_in_if<sc_dt::sc_logic> &s)
534{
535    ::sc_core::at_negedge(s);
536}
537
538
539void
540next_trigger()
541{
542    sc_gem5::Process *p = sc_gem5::scheduler.current();
543    p->cancelTimeout();
544    p->clearDynamic();
545}
546
547void
548next_trigger(const sc_event &e)
549{
550    sc_gem5::Process *p = sc_gem5::scheduler.current();
551    p->cancelTimeout();
552    ::sc_gem5::newDynamicSensitivityEvent(p, &e);
553}
554
555void
556next_trigger(const sc_event_or_list &eol)
557{
558    sc_gem5::Process *p = sc_gem5::scheduler.current();
559    p->cancelTimeout();
560    ::sc_gem5::newDynamicSensitivityEventOrList(p, &eol);
561}
562
563void
564next_trigger(const sc_event_and_list &eal)
565{
566    sc_gem5::Process *p = sc_gem5::scheduler.current();
567    p->cancelTimeout();
568    ::sc_gem5::newDynamicSensitivityEventAndList(p, &eal);
569}
570
571void
572next_trigger(const sc_time &t)
573{
574    sc_gem5::Process *p = sc_gem5::scheduler.current();
575    p->setTimeout(t);
576    p->clearDynamic();
577}
578
579void
580next_trigger(double d, sc_time_unit u)
581{
582    next_trigger(sc_time(d, u));
583}
584
585void
586next_trigger(const sc_time &t, const sc_event &e)
587{
588    sc_gem5::Process *p = sc_gem5::scheduler.current();
589    p->setTimeout(t);
590    ::sc_gem5::newDynamicSensitivityEvent(p, &e);
591}
592
593void
594next_trigger(double d, sc_time_unit u, const sc_event &e)
595{
596    next_trigger(sc_time(d, u), e);
597}
598
599void
600next_trigger(const sc_time &t, const sc_event_or_list &eol)
601{
602    sc_gem5::Process *p = sc_gem5::scheduler.current();
603    p->setTimeout(t);
604    ::sc_gem5::newDynamicSensitivityEventOrList(p, &eol);
605}
606
607void
608next_trigger(double d, sc_time_unit u, const sc_event_or_list &eol)
609{
610    next_trigger(sc_time(d, u), eol);
611}
612
613void
614next_trigger(const sc_time &t, const sc_event_and_list &eal)
615{
616    sc_gem5::Process *p = sc_gem5::scheduler.current();
617    p->setTimeout(t);
618    ::sc_gem5::newDynamicSensitivityEventAndList(p, &eal);
619}
620
621void
622next_trigger(double d, sc_time_unit u, const sc_event_and_list &eal)
623{
624    next_trigger(sc_time(d, u), eal);
625}
626
627bool
628timed_out()
629{
630    ::sc_gem5::Process *p = sc_gem5::scheduler.current();
631    if (!p)
632        return false;
633    else
634        return p->timedOut();
635}
636
637
638namespace
639{
640
641bool
642waitErrorCheck(sc_gem5::Process *p)
643{
644    if (p->procKind() == SC_METHOD_PROC_) {
645        SC_REPORT_ERROR(SC_ID_WAIT_NOT_ALLOWED_,
646                "\n        in SC_METHODs use next_trigger() instead");
647        return true;
648    }
649    return false;
650}
651
652} // anonymous namespace
653
654void
655wait()
656{
657    sc_gem5::Process *p = sc_gem5::scheduler.current();
658    if (waitErrorCheck(p))
659        return;
660    p->cancelTimeout();
661    p->clearDynamic();
662    sc_gem5::scheduler.yield();
663}
664
665void
666wait(int n)
667{
668    if (n <= 0) {
669        std::string msg = csprintf("n = %d", n);
670        SC_REPORT_ERROR(SC_ID_WAIT_N_INVALID_, msg.c_str());
671    }
672    sc_gem5::Process *p = sc_gem5::scheduler.current();
673    p->waitCount(n - 1);
674    wait();
675}
676
677void
678wait(const sc_event &e)
679{
680    sc_gem5::Process *p = sc_gem5::scheduler.current();
681    if (waitErrorCheck(p))
682        return;
683    p->cancelTimeout();
684    ::sc_gem5::newDynamicSensitivityEvent(p, &e);
685    sc_gem5::scheduler.yield();
686}
687
688void
689wait(const sc_event_or_list &eol)
690{
691    sc_gem5::Process *p = sc_gem5::scheduler.current();
692    if (waitErrorCheck(p))
693        return;
694    p->cancelTimeout();
695    ::sc_gem5::newDynamicSensitivityEventOrList(p, &eol);
696    sc_gem5::scheduler.yield();
697}
698
699void
700wait(const sc_event_and_list &eal)
701{
702    sc_gem5::Process *p = sc_gem5::scheduler.current();
703    if (waitErrorCheck(p))
704        return;
705    p->cancelTimeout();
706    ::sc_gem5::newDynamicSensitivityEventAndList(p, &eal);
707    sc_gem5::scheduler.yield();
708}
709
710void
711wait(const sc_time &t)
712{
713    sc_gem5::Process *p = sc_gem5::scheduler.current();
714    if (waitErrorCheck(p))
715        return;
716    p->setTimeout(t);
717    p->clearDynamic();
718    sc_gem5::scheduler.yield();
719}
720
721void
722wait(double d, sc_time_unit u)
723{
724    wait(sc_time(d, u));
725}
726
727void
728wait(const sc_time &t, const sc_event &e)
729{
730    sc_gem5::Process *p = sc_gem5::scheduler.current();
731    if (waitErrorCheck(p))
732        return;
733    p->setTimeout(t);
734    ::sc_gem5::newDynamicSensitivityEvent(p, &e);
735    sc_gem5::scheduler.yield();
736}
737
738void
739wait(double d, sc_time_unit u, const sc_event &e)
740{
741    wait(sc_time(d, u), e);
742}
743
744void
745wait(const sc_time &t, const sc_event_or_list &eol)
746{
747    sc_gem5::Process *p = sc_gem5::scheduler.current();
748    if (waitErrorCheck(p))
749        return;
750    p->setTimeout(t);
751    ::sc_gem5::newDynamicSensitivityEventOrList(p, &eol);
752    sc_gem5::scheduler.yield();
753}
754
755void
756wait(double d, sc_time_unit u, const sc_event_or_list &eol)
757{
758    wait(sc_time(d, u), eol);
759}
760
761void
762wait(const sc_time &t, const sc_event_and_list &eal)
763{
764    sc_gem5::Process *p = sc_gem5::scheduler.current();
765    if (waitErrorCheck(p))
766        return;
767    p->setTimeout(t);
768    ::sc_gem5::newDynamicSensitivityEventAndList(p, &eal);
769    sc_gem5::scheduler.yield();
770}
771
772void
773wait(double d, sc_time_unit u, const sc_event_and_list &eal)
774{
775    wait(sc_time(d, u), eal);
776}
777
778void
779halt()
780{
781    ::sc_core::wait();
782    throw ::sc_gem5::ScHalt();
783}
784
785void
786at_posedge(const sc_signal_in_if<bool> &s)
787{
788    while (s.read())
789        wait();
790    while (!s.read())
791        wait();
792}
793
794void
795at_posedge(const sc_signal_in_if<sc_dt::sc_logic> &s)
796{
797    while (s.read() == sc_dt::Log_1)
798        wait();
799    while (s.read() == sc_dt::Log_0)
800        wait();
801}
802
803void
804at_negedge(const sc_signal_in_if<bool> &s)
805{
806    while (!s.read())
807        wait();
808    while (s.read())
809        wait();
810}
811
812void
813at_negedge(const sc_signal_in_if<sc_dt::sc_logic> &s)
814{
815    while (s.read() == sc_dt::Log_0)
816        wait();
817    while (s.read() == sc_dt::Log_1)
818        wait();
819}
820
821const char *
822sc_gen_unique_name(const char *seed)
823{
824    if (!seed || seed[0] == '\0') {
825        SC_REPORT_ERROR(SC_ID_GEN_UNIQUE_NAME_, "");
826        seed = "unnamed";
827    }
828
829    auto mod = sc_gem5::pickParentModule();
830    if (mod)
831        return mod->uniqueName(seed);
832
833    sc_gem5::Process *p = sc_gem5::scheduler.current();
834    if (p)
835        return p->uniqueName(seed);
836
837    return ::sc_gem5::globalNameGen.gen(seed);
838}
839
840bool
841sc_hierarchical_name_exists(const char *name)
842{
843    return sc_gem5::findEvent(name) != sc_gem5::allEvents.end() ||
844        ::sc_gem5::findObject(name, sc_gem5::allObjects);
845}
846
847bool
848sc_start_of_simulation_invoked()
849{
850    return ::sc_gem5::kernel->startOfSimulationComplete();
851}
852
853bool
854sc_end_of_simulation_invoked()
855{
856    return ::sc_gem5::kernel->endOfSimulationComplete();
857}
858
859sc_module *
860sc_module_sc_new(sc_module *mod)
861{
862    static std::vector<std::unique_ptr<sc_module> > modules;
863    modules.emplace_back(mod);
864    return mod;
865}
866
867} // namespace sc_core
868