port.cc revision 13260:4d18f1d20093 
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 "systemc/core/port.hh"
31
32#include "systemc/core/sensitivity.hh"
33#include "systemc/ext/channel/sc_signal_in_if.hh"
34
35namespace sc_gem5
36{
37
38void
39Port::finalizePort(StaticSensitivityPort *port)
40{
41    for (int i = 0; i < size(); i++)
42        port->addEvent(&getInterface(i)->default_event());
43}
44
45void
46Port::finalizeFinder(StaticSensitivityFinder *finder)
47{
48    for (int i = 0; i < size(); i++)
49        finder->addEvent(&finder->find(getInterface(i)));
50}
51
52void
53Port::finalizeReset(ResetSensitivityPort *reset)
54{
55    assert(size() <= 1);
56    if (size()) {
57        auto iface =
58            dynamic_cast<sc_core::sc_signal_in_if<bool> *>(getInterface(0));
59        assert(iface);
60        reset->setSignal(iface);
61    }
62}
63
64void
65Port::sensitive(StaticSensitivityPort *port)
66{
67    if (finalized)
68        finalizePort(port);
69    else
70        sensitivities.push_back(new Sensitivity(port));
71}
72
73void
74Port::sensitive(StaticSensitivityFinder *finder)
75{
76    if (finalized)
77        finalizeFinder(finder);
78    else
79        sensitivities.push_back(new Sensitivity(finder));
80}
81
82void
83Port::sensitive(ResetSensitivityPort *reset)
84{
85    if (finalized)
86        finalizeReset(reset);
87    else
88        sensitivities.push_back(new Sensitivity(reset));
89}
90
91void
92Port::finalize()
93{
94    if (finalized)
95        return;
96    finalized = true;
97
98    for (auto &b: bindings) {
99        if (b->interface) {
100            addInterface(b->interface);
101        } else {
102            b->port->_gem5Port->finalize();
103            addInterfaces(b->port);
104        }
105        delete b;
106    }
107
108    bindings.clear();
109
110    for (auto &s: sensitivities) {
111        if (s->port)
112            finalizePort(s->port);
113        else if (s->finder)
114            finalizeFinder(s->finder);
115        else
116            finalizeReset(s->reset);
117        delete s;
118    }
119
120    sensitivities.clear();
121}
122
123std::list<Port *> allPorts;
124
125} // namespace sc_gem5
126