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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28 */
29
30#include "systemc/core/kernel.hh"
31
32#include "base/logging.hh"
33#include "systemc/core/channel.hh"
34#include "systemc/core/module.hh"
35#include "systemc/core/port.hh"
36#include "systemc/core/scheduler.hh"
37
38namespace sc_gem5
39{
40
41namespace
42{
43
44bool scMainDone = false;
45bool stopAfterCallbacks = false;
46bool startComplete = false;
47bool endComplete = false;
48
49sc_core::sc_status _status = sc_core::SC_ELABORATION;
50
51} // anonymous namespace
52
53bool Kernel::startOfSimulationComplete() { return startComplete; }
54bool Kernel::endOfSimulationComplete() { return endComplete; }
55
56bool Kernel::scMainFinished() { return scMainDone; }
57void Kernel::scMainFinished(bool finished) { scMainDone = finished; }
58
59sc_core::sc_status Kernel::status() { return _status; }
60void Kernel::status(sc_core::sc_status s) { _status = s; }
61
62Kernel::Kernel(Params *params) :
63 SimObject(params), t0Event(this, false, EventBase::Default_Pri - 1)
64{
65 // Install ourselves as the scheduler's event manager.
66 ::sc_gem5::scheduler.setEventQueue(eventQueue());
67}
68
69void
70Kernel::init()
71{
72 if (scMainDone)
73 return;
74
75 if (stopAfterCallbacks)
76 fatal("Simulation called sc_stop during elaboration.\n");
77
78 status(::sc_core::SC_BEFORE_END_OF_ELABORATION);
79 for (auto p: allPorts)
80 p->sc_port_base()->before_end_of_elaboration();
81 for (auto m: sc_gem5::allModules)
82 m->beforeEndOfElaboration();
83 for (auto c: sc_gem5::allChannels)
84 c->sc_chan()->before_end_of_elaboration();
85
86 ::sc_gem5::scheduler.elaborationDone(true);
87}
88
89void
90Kernel::regStats()
91{
92 if (scMainDone || stopAfterCallbacks)
93 return;
94
95 try {
96 for (auto p: allPorts)
97 p->finalize();
98 for (auto p: allPorts)
99 p->regPort();
100

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108 } catch (...) {
109 ::sc_gem5::scheduler.throwToScMain();
110 }
111}
112
113void
114Kernel::startup()
115{
116 if (scMainDone)
117 return;
118
119 schedule(t0Event, curTick());
120
121 if (stopAfterCallbacks)
122 return;
123
124 try {

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