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

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26 *
27 * Authors: Gabe Black
28 */
29
30#ifndef __SYSTEMC_EXT_CHANNEL_SC_SIGNAL_HH__
31#define __SYSTEMC_EXT_CHANNEL_SC_SIGNAL_HH__
32
33#include <iostream>
34#include <string>
35#include <vector>
36
37#include "../core/sc_event.hh"
38#include "../core/sc_module.hh" // for sc_gen_unique_name
39#include "../core/sc_prim.hh"
40#include "../dt/bit/sc_logic.hh"
41#include "sc_signal_inout_if.hh"
42#include "warn_unimpl.hh" // for warn_unimpl
43
44namespace sc_core
45{
46
47class sc_port_base;
48
49template <class T, sc_writer_policy WRITER_POLICY=SC_ONE_WRITER>
50class sc_signal : public sc_signal_inout_if<T>,
51 public sc_prim_channel
52{
53 public:
54 sc_signal() : sc_signal_inout_if<T>(),
55 sc_prim_channel(sc_gen_unique_name("signal")),
56 m_cur_val(T()), m_new_val(T()), _changeStamp(~0ULL)
57 {}
58 explicit sc_signal(const char *name) :
59 sc_signal_inout_if<T>(), sc_prim_channel(name),
60 m_cur_val(T()), m_new_val(T()), _changeStamp(~0ULL)
61 {}
62 explicit sc_signal(const char *name, const T &initial_value) :
63 sc_signal_inout_if<T>(), sc_prim_channel(name),
64 m_cur_val(initial_value), m_new_val(initial_value), _changeStamp(~0ULL)
65 {}
66 virtual ~sc_signal() {}
67
68 virtual void
69 register_port(sc_port_base &, const char *)
70 {
71 sc_channel_warn_unimpl(__PRETTY_FUNCTION__);
72 }
73
74 virtual const T &read() const { return m_cur_val; }
75 operator const T&() const { return read(); }
76
77 virtual sc_writer_policy
78 get_writer_policy() const
79 {

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151 // are not specified in the standard but are referred to directly by one
152 // of the tests.
153 T m_cur_val;
154 T m_new_val;
155
156 private:
157 sc_event _valueChangedEvent;
158 uint64_t _changeStamp;
159
160 // Disabled
161 sc_signal(const sc_signal<T, WRITER_POLICY> &) :
162 sc_signal_inout_if<T>(), sc_prim_channel("")
163 {}
164};
165
166template <class T, sc_writer_policy WRITER_POLICY>

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174template <sc_writer_policy WRITER_POLICY>
175class sc_signal<bool, WRITER_POLICY> :
176 public sc_signal_inout_if<bool>, public sc_prim_channel
177{
178 public:
179 sc_signal() : sc_signal_inout_if<bool>(),
180 sc_prim_channel(sc_gen_unique_name("signal")),
181 m_cur_val(bool()), m_new_val(bool()),
182 _changeStamp(~0ULL), _posStamp(~0ULL), _negStamp(~0ULL)
183 {}
184 explicit sc_signal(const char *name) :
185 sc_signal_inout_if<bool>(), sc_prim_channel(name),
186 m_cur_val(bool()), m_new_val(bool()),
187 _changeStamp(~0ULL), _posStamp(~0ULL), _negStamp(~0ULL)
188 {}
189 explicit sc_signal(const char *name, const bool &initial_value) :
190 sc_signal_inout_if<bool>(), sc_prim_channel(name),
191 m_cur_val(initial_value), m_new_val(initial_value),
192 _changeStamp(~0ULL), _posStamp(~0ULL), _negStamp(~0ULL)
193 {}
194 virtual ~sc_signal() {}
195
196 virtual void
197 register_port(sc_port_base &, const char *)
198 {
199 sc_channel_warn_unimpl(__PRETTY_FUNCTION__);
200 }
201
202 virtual const bool &read() const { return m_cur_val; }
203 operator const bool &() const { return read(); }
204
205 virtual sc_writer_policy
206 get_writer_policy() const
207 {

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309 sc_event _valueChangedEvent;
310 sc_event _posedgeEvent;
311 sc_event _negedgeEvent;
312
313 uint64_t _changeStamp;
314 uint64_t _posStamp;
315 uint64_t _negStamp;
316
317 // Disabled
318 sc_signal(const sc_signal<bool, WRITER_POLICY> &) :
319 sc_signal_inout_if<bool>(), sc_prim_channel("")
320 {}
321};
322
323template <sc_writer_policy WRITER_POLICY>
324class sc_signal<sc_dt::sc_logic, WRITER_POLICY> :
325 public sc_signal_inout_if<sc_dt::sc_logic>, public sc_prim_channel
326{
327 public:
328 sc_signal() : sc_signal_inout_if<sc_dt::sc_logic>(),
329 sc_prim_channel(sc_gen_unique_name("signal")),
330 m_cur_val(sc_dt::sc_logic()), m_new_val(sc_dt::sc_logic()),
331 _changeStamp(~0ULL), _posStamp(~0ULL), _negStamp(~0ULL)
332 {}
333 explicit sc_signal(const char *name) :
334 sc_signal_inout_if<sc_dt::sc_logic>(), sc_prim_channel(name),
335 m_cur_val(sc_dt::sc_logic()), m_new_val(sc_dt::sc_logic()),
336 _changeStamp(~0ULL), _posStamp(~0ULL), _negStamp(~0ULL)
337 {}
338 explicit sc_signal(const char *name,
339 const sc_dt::sc_logic &initial_value) :
340 sc_signal_inout_if<sc_dt::sc_logic>(), sc_prim_channel(name),
341 m_cur_val(initial_value), m_new_val(initial_value),
342 _changeStamp(~0ULL), _posStamp(~0ULL), _negStamp(~0ULL)
343 {}
344 virtual ~sc_signal() {}
345
346 virtual void
347 register_port(sc_port_base &, const char *)
348 {
349 sc_channel_warn_unimpl(__PRETTY_FUNCTION__);
350 }
351
352 virtual const sc_dt::sc_logic &read() const { return m_cur_val; }
353 operator const sc_dt::sc_logic &() const { return read(); }
354
355 virtual sc_writer_policy
356 get_writer_policy() const
357 {

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459 sc_event _valueChangedEvent;
460 sc_event _posedgeEvent;
461 sc_event _negedgeEvent;
462
463 uint64_t _changeStamp;
464 uint64_t _posStamp;
465 uint64_t _negStamp;
466
467 // Disabled
468 sc_signal(const sc_signal<sc_dt::sc_logic, WRITER_POLICY> &) :
469 sc_signal_inout_if<sc_dt::sc_logic>(), sc_prim_channel("")
470 {}
471};
472
473} // namespace sc_core
474
475#endif //__SYSTEMC_EXT_CHANNEL_SC_SIGNAL_HH__