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 "base/logging.hh"
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31#include "base/types.hh" 32#include "sim/core.hh" 33#include "sim/eventq.hh" 34#include "systemc/core/kernel.hh" 35#include "systemc/core/sched_event.hh" 36#include "systemc/core/scheduler.hh" |
37#include "systemc/ext/channel/sc_clock.hh" 38#include "systemc/ext/core/sc_module.hh" // for sc_gen_unique_name 39
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34namespace sc_core
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40namespace sc_gem5 |
41{ 42
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37sc_clock::sc_clock() :
38 sc_interface(), sc_signal<bool>(sc_gen_unique_name("clock"))
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43class ClockTick : public ScEvent |
44{
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40 warn("%s not implemented.\n", __PRETTY_FUNCTION__);
41}
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45 private: 46 ::sc_core::sc_clock *clock; 47 ::sc_core::sc_time _period; 48 std::string _name; 49 Process *p; 50 ProcessMemberFuncWrapper<::sc_core::sc_clock> funcWrapper; 51 std::string _procName; |
52
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43sc_clock::sc_clock(const char *name) : sc_interface(), sc_signal<bool>(name)
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53 public: 54 ClockTick(::sc_core::sc_clock *clock, bool to, 55 ::sc_core::sc_time _period) : 56 ScEvent([this]() { tick(); }), 57 clock(clock), _period(_period), _name(clock->name()), 58 funcWrapper(clock, to ? &::sc_core::sc_clock::tickUp : 59 &::sc_core::sc_clock::tickDown) 60 { 61 _name += (to ? ".up_tick" : ".down_tick"); 62 _procName = _name + ".p"; 63 p = newMethodProcess(_procName.c_str(), &funcWrapper); 64 scheduler.dontInitialize(p); 65 } 66 67 ~ClockTick() 68 { 69 if (scheduled()) 70 scheduler.deschedule(this); 71 p->popListNode(); 72 } 73 74 void 75 tick() 76 { 77 scheduler.schedule(this, _period); 78 p->ready(); 79 } 80}; 81 82}; 83 84namespace sc_core |
85{
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45 warn("%s not implemented.\n", __PRETTY_FUNCTION__);
46}
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86
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87sc_clock::sc_clock() : 88 sc_clock(sc_gen_unique_name("clock"), sc_time(1.0, SC_NS), 89 0.5, SC_ZERO_TIME, true) 90{} 91 92sc_clock::sc_clock(const char *name) : 93 sc_clock(name, sc_time(1.0, SC_NS), 0.5, SC_ZERO_TIME, true) 94{} 95 |
96sc_clock::sc_clock(const char *name, const sc_time &period, 97 double duty_cycle, const sc_time &start_time,
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50 bool posedge_first)
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98 bool posedge_first) : 99 sc_interface(), sc_signal<bool>(name, posedge_first ? false : true), 100 _period(period), _dutyCycle(duty_cycle), _startTime(start_time), 101 _posedgeFirst(posedge_first) |
102{
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52 warn("%s not implemented.\n", __PRETTY_FUNCTION__);
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103 _gem5UpEdge = new ::sc_gem5::ClockTick(this, true, period); 104 _gem5DownEdge = new ::sc_gem5::ClockTick(this, false, period); |
105} 106 107sc_clock::sc_clock(const char *name, double period_v, sc_time_unit period_tu,
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56 double duty_cycle)
57{
58 warn("%s not implemented.\n", __PRETTY_FUNCTION__);
59}
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108 double duty_cycle) : 109 sc_clock(name, sc_time(period_v, period_tu), duty_cycle, SC_ZERO_TIME, 110 true) 111{} |
112 113sc_clock::sc_clock(const char *name, double period_v, sc_time_unit period_tu, 114 double duty_cycle, double start_time_v,
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63 sc_time_unit start_time_tu, bool posedge_first)
64{
65 warn("%s not implemented.\n", __PRETTY_FUNCTION__);
66}
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115 sc_time_unit start_time_tu, bool posedge_first) : 116 sc_clock(name, sc_time(period_v, period_tu), duty_cycle, 117 sc_time(start_time_v, start_time_tu), posedge_first) 118{} |
119 120sc_clock::sc_clock(const char *name, double period, double duty_cycle,
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69 double start_time, bool posedge_first)
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121 double start_time, bool posedge_first) : 122 sc_clock(name, sc_time(period, true), duty_cycle, 123 sc_time(start_time, true), posedge_first) 124{} 125 126sc_clock::~sc_clock() |
127{
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71 warn("%s not implemented.\n", __PRETTY_FUNCTION__);
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128 if (_gem5UpEdge->scheduled()) 129 ::sc_gem5::scheduler.deschedule(_gem5UpEdge); 130 if (_gem5DownEdge->scheduled()) 131 ::sc_gem5::scheduler.deschedule(_gem5DownEdge); 132 delete _gem5UpEdge; 133 delete _gem5DownEdge; |
134} 135
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74sc_clock::~sc_clock() {}
75
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136void 137sc_clock::write(const bool &) 138{
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79 warn("%s not implemented.\n", __PRETTY_FUNCTION__);
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139 panic("write() called on sc_clock."); |
140} 141
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82const sc_time &
83sc_clock::period() const
84{
85 warn("%s not implemented.\n", __PRETTY_FUNCTION__);
86 return *(const sc_time *)nullptr;
87}
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142const sc_time &sc_clock::period() const { return _period; } 143double sc_clock::duty_cycle() const { return _dutyCycle; } 144const sc_time &sc_clock::start_time() const { return _startTime; } 145bool sc_clock::posedge_first() const { return _posedgeFirst; } |
146
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89double
90sc_clock::duty_cycle() const
91{
92 warn("%s not implemented.\n", __PRETTY_FUNCTION__);
93 return 0.0;
94}
95
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147const sc_time &
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97sc_clock::start_time() const
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148sc_clock::time_stamp() |
149{ 150 warn("%s not implemented.\n", __PRETTY_FUNCTION__); 151 return *(const sc_time *)nullptr; 152} 153
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103bool
104sc_clock::posedge_first() const
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154void 155sc_clock::before_end_of_elaboration() |
156{
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106 warn("%s not implemented.\n", __PRETTY_FUNCTION__);
107 return false;
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157 if (_posedgeFirst) { 158 ::sc_gem5::scheduler.schedule(_gem5UpEdge, _startTime); 159 ::sc_gem5::scheduler.schedule(_gem5DownEdge, 160 _startTime + _period * _dutyCycle); 161 } else { 162 ::sc_gem5::scheduler.schedule(_gem5DownEdge, _startTime); 163 ::sc_gem5::scheduler.schedule(_gem5UpEdge, 164 _startTime + _period * (1.0 - _dutyCycle)); 165 } |
166} 167
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110const sc_time &
111sc_clock::time_stamp()
112{
113 warn("%s not implemented.\n", __PRETTY_FUNCTION__);
114 return *(const sc_time *)nullptr;
115}
116
117const char *sc_clock::kind() const { return "sc_clock"; }
118
119void sc_clock::before_end_of_elaboration() {}
120
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168} // namespace sc_core
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