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/kernel.hh" 31 32#include "base/logging.hh"
| 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/kernel.hh" 31 32#include "base/logging.hh"
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| 33#include "systemc/core/channel.hh"
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33#include "systemc/core/module.hh" 34#include "systemc/core/scheduler.hh" 35 36namespace sc_gem5 37{ 38 39namespace 40{ 41 42bool stopAfterCallbacks = false; 43bool startComplete = false; 44bool endComplete = false; 45 46sc_core::sc_status _status = sc_core::SC_ELABORATION; 47 48} // anonymous namespace 49 50bool Kernel::startOfSimulationComplete() { return startComplete; } 51bool Kernel::endOfSimulationComplete() { return endComplete; } 52 53sc_core::sc_status Kernel::status() { return _status; } 54void Kernel::status(sc_core::sc_status s) { _status = s; } 55 56Kernel::Kernel(Params *params) : 57 SimObject(params), t0Event(this, false, EventBase::Default_Pri - 1) 58{ 59 // Install ourselves as the scheduler's event manager. 60 ::sc_gem5::scheduler.setEventQueue(eventQueue()); 61} 62 63void 64Kernel::init() 65{ 66 status(::sc_core::SC_BEFORE_END_OF_ELABORATION); 67 for (auto m: sc_gem5::allModules) { 68 callbackModule(m); 69 m->sc_mod()->before_end_of_elaboration();
| 34#include "systemc/core/module.hh" 35#include "systemc/core/scheduler.hh" 36 37namespace sc_gem5 38{ 39 40namespace 41{ 42 43bool stopAfterCallbacks = false; 44bool startComplete = false; 45bool endComplete = false; 46 47sc_core::sc_status _status = sc_core::SC_ELABORATION; 48 49} // anonymous namespace 50 51bool Kernel::startOfSimulationComplete() { return startComplete; } 52bool Kernel::endOfSimulationComplete() { return endComplete; } 53 54sc_core::sc_status Kernel::status() { return _status; } 55void Kernel::status(sc_core::sc_status s) { _status = s; } 56 57Kernel::Kernel(Params *params) : 58 SimObject(params), t0Event(this, false, EventBase::Default_Pri - 1) 59{ 60 // Install ourselves as the scheduler's event manager. 61 ::sc_gem5::scheduler.setEventQueue(eventQueue()); 62} 63 64void 65Kernel::init() 66{ 67 status(::sc_core::SC_BEFORE_END_OF_ELABORATION); 68 for (auto m: sc_gem5::allModules) { 69 callbackModule(m); 70 m->sc_mod()->before_end_of_elaboration();
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| 71 for (auto p: m->ports) 72 p->before_end_of_elaboration(); 73 for (auto e: m->exports) 74 e->before_end_of_elaboration();
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70 } 71 callbackModule(nullptr);
| 75 } 76 callbackModule(nullptr);
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| 77 for (auto c: sc_gem5::allChannels) 78 c->sc_chan()->before_end_of_elaboration();
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72 73 if (stopAfterCallbacks) 74 stopWork(); 75} 76 77void 78Kernel::regStats() 79{ 80 for (auto m: sc_gem5::allModules) 81 for (auto p: m->ports) 82 p->_gem5Finalize(); 83 84 status(::sc_core::SC_END_OF_ELABORATION);
| 79 80 if (stopAfterCallbacks) 81 stopWork(); 82} 83 84void 85Kernel::regStats() 86{ 87 for (auto m: sc_gem5::allModules) 88 for (auto p: m->ports) 89 p->_gem5Finalize(); 90 91 status(::sc_core::SC_END_OF_ELABORATION);
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85 for (auto m: sc_gem5::allModules)
| 92 for (auto m: sc_gem5::allModules) {
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86 m->sc_mod()->end_of_elaboration();
| 93 m->sc_mod()->end_of_elaboration();
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| 94 for (auto p: m->ports) 95 p->end_of_elaboration(); 96 for (auto e: m->exports) 97 e->end_of_elaboration(); 98 } 99 for (auto c: sc_gem5::allChannels) 100 c->sc_chan()->end_of_elaboration();
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87 88 if (stopAfterCallbacks) 89 stopWork(); 90} 91 92void 93Kernel::startup() 94{ 95 status(::sc_core::SC_START_OF_SIMULATION);
| 101 102 if (stopAfterCallbacks) 103 stopWork(); 104} 105 106void 107Kernel::startup() 108{ 109 status(::sc_core::SC_START_OF_SIMULATION);
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96 for (auto m: sc_gem5::allModules)
| 110 for (auto m: sc_gem5::allModules) {
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97 m->sc_mod()->start_of_simulation();
| 111 m->sc_mod()->start_of_simulation();
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| 112 for (auto p: m->ports) 113 p->start_of_simulation(); 114 for (auto e: m->exports) 115 e->start_of_simulation(); 116 } 117 for (auto c: sc_gem5::allChannels) 118 c->sc_chan()->start_of_simulation();
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98 99 startComplete = true; 100 101 if (stopAfterCallbacks) 102 stopWork(); 103 104 kernel->status(::sc_core::SC_RUNNING); 105 106 schedule(t0Event, curTick()); 107 // Run update once before the event queue starts. 108 ::sc_gem5::scheduler.update(); 109} 110 111void 112Kernel::stop() 113{ 114 if (status() < ::sc_core::SC_RUNNING) 115 stopAfterCallbacks = true; 116 else 117 stopWork(); 118} 119 120void 121Kernel::stopWork() 122{ 123 status(::sc_core::SC_END_OF_SIMULATION);
| 119 120 startComplete = true; 121 122 if (stopAfterCallbacks) 123 stopWork(); 124 125 kernel->status(::sc_core::SC_RUNNING); 126 127 schedule(t0Event, curTick()); 128 // Run update once before the event queue starts. 129 ::sc_gem5::scheduler.update(); 130} 131 132void 133Kernel::stop() 134{ 135 if (status() < ::sc_core::SC_RUNNING) 136 stopAfterCallbacks = true; 137 else 138 stopWork(); 139} 140 141void 142Kernel::stopWork() 143{ 144 status(::sc_core::SC_END_OF_SIMULATION);
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124 for (auto m: sc_gem5::allModules)
| 145 for (auto m: sc_gem5::allModules) {
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125 m->sc_mod()->end_of_simulation();
| 146 m->sc_mod()->end_of_simulation();
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| 147 for (auto p: m->ports) 148 p->end_of_simulation(); 149 for (auto e: m->exports) 150 e->end_of_simulation(); 151 } 152 for (auto c: sc_gem5::allChannels) 153 c->sc_chan()->end_of_simulation();
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126 127 endComplete = true; 128 129 status(::sc_core::SC_STOPPED); 130 131 if (stopAfterCallbacks) 132 fatal("Simulation called sc_stop during elaboration.\n"); 133} 134 135void 136Kernel::t0Handler() 137{ 138 // Now that the event queue has started, mark all the processes that 139 // need to be initialized as ready to run. 140 // 141 // This event has greater priority than delta notifications and so will 142 // happen before them, honoring the ordering for the initialization phase 143 // in the spec. The delta phase will happen at normal priority, and then 144 // the event which runs the processes which is at a lower priority. 145 ::sc_gem5::scheduler.prepareForInit(); 146 147 status(::sc_core::SC_RUNNING); 148} 149 150Kernel *kernel; 151 152} // namespace sc_gem5 153 154sc_gem5::Kernel * 155SystemC_KernelParams::create() 156{ 157 panic_if(sc_gem5::kernel, 158 "Only one systemc kernel object may be defined.\n"); 159 sc_gem5::kernel = new sc_gem5::Kernel(this); 160 return sc_gem5::kernel; 161}
| 154 155 endComplete = true; 156 157 status(::sc_core::SC_STOPPED); 158 159 if (stopAfterCallbacks) 160 fatal("Simulation called sc_stop during elaboration.\n"); 161} 162 163void 164Kernel::t0Handler() 165{ 166 // Now that the event queue has started, mark all the processes that 167 // need to be initialized as ready to run. 168 // 169 // This event has greater priority than delta notifications and so will 170 // happen before them, honoring the ordering for the initialization phase 171 // in the spec. The delta phase will happen at normal priority, and then 172 // the event which runs the processes which is at a lower priority. 173 ::sc_gem5::scheduler.prepareForInit(); 174 175 status(::sc_core::SC_RUNNING); 176} 177 178Kernel *kernel; 179 180} // namespace sc_gem5 181 182sc_gem5::Kernel * 183SystemC_KernelParams::create() 184{ 185 panic_if(sc_gem5::kernel, 186 "Only one systemc kernel object may be defined.\n"); 187 sc_gem5::kernel = new sc_gem5::Kernel(this); 188 return sc_gem5::kernel; 189}
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