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/*
* Copyright (c) 2014 ARM Limited
* All rights reserved
*
* The license below extends only to copyright in the software and shall
* not be construed as granting a license to any other intellectual
* property including but not limited to intellectual property relating
* to a hardware implementation of the functionality of the software
* licensed hereunder. You may use the software subject to the license
* terms below provided that you ensure that this notice is replicated
* unmodified and in its entirety in all distributions of the software,
* modified or unmodified, in source code or in binary form.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met: redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer;
* redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution;
* neither the name of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Authors: Andrew Bardsley
*/
#include <cstdlib>
#include <iostream>
#include <list>
#include "base/statistics.hh"
#include "sim/cxx_config_ini.hh"
#include "sim/cxx_manager.hh"
#include "sim/debug.hh"
#include "sim/init_signals.hh"
#include "sim/stat_control.hh"
#include "sc_gem5_control.hh"
#include "sc_logger.hh"
#include "sc_module.hh"
#include "stats.hh"
namespace Gem5SystemC
{
/** This is the private side of Gem5Control */
class Gem5TopLevelModule : public Gem5SystemC::Module
{
friend class Gem5Control;
protected:
CxxConfigFileBase *config_file;
CxxConfigManager *root_manager;
Gem5SystemC::Logger logger;
/** Things to do at end_of_elaborate */
std::list<void (*)()> endOfElaborationFuncs;
public:
SC_HAS_PROCESS(Gem5TopLevelModule);
Gem5TopLevelModule(sc_core::sc_module_name name,
const std::string &config_filename);
~Gem5TopLevelModule();
/** gem5 simulate. @todo for more interesting simulation control,
* this needs to be more complicated */
void run();
/* Register an action to happen at the end of elaboration */
void registerEndOfElaboration(void (*func)())
{
endOfElaborationFuncs.push_back(func);
}
/** SystemC startup */
void end_of_elaboration();
};
Gem5System::Gem5System(CxxConfigManager *manager_,
const std::string &system_name, const std::string &instance_name) :
manager(manager_),
systemName(system_name),
instanceName(instance_name)
{
manager->addRenaming(CxxConfigManager::Renaming(
system_name, instance_name));
}
Gem5System::~Gem5System()
{
delete manager;
}
void
Gem5System::setParam(const std::string &object,
const std::string &param_name, const std::string &param_value)
{
manager->setParam(systemName + (object != "" ? "." + object : ""),
param_name, param_value);
}
void
Gem5System::setParamVector(const std::string &object,
const std::string &param_name,
const std::vector<std::string> &param_values)
{
manager->setParamVector(systemName +
(object != "" ? "." + object : ""), param_name, param_values);
}
void
Gem5System::instantiate()
{
try {
/* Make a new System */
SimObject *obj = manager->findObject(systemName, true);
/* Add the System's objects to the list of managed
* objects for initialisation */
manager->findTraversalOrder(systemName);
/* Bound ports *must* be internal to System */
for (auto i = manager->objectsInOrder.begin();
i != manager->objectsInOrder.end();
++ i)
{
manager->bindObjectPorts(*i);
}
/* gem5 startup sequence */
manager->instantiate(false);
manager->initState();
manager->startup();
} catch (CxxConfigManager::Exception &e) {
fatal("Config problem in Gem5System: %s: %s",
e.name, e.message);
}
}
Gem5Control::Gem5Control(const std::string &config_filename)
{
module = new Gem5TopLevelModule("gem5", config_filename);
}
Gem5Control::~Gem5Control()
{ }
void
Gem5Control::registerEndOfElaboration(void (*func)())
{
module->registerEndOfElaboration(func);
}
void
Gem5Control::setDebugFlag(const char *flag)
{
::setDebugFlag(flag);
}
void
Gem5Control::clearDebugFlag(const char *flag)
{
::clearDebugFlag(flag);
}
void
Gem5Control::setRemoteGDBPort(unsigned int port)
{
::setRemoteGDBPort(port);
}
Gem5System *
Gem5Control::makeSystem(const std::string &system_name,
const std::string &instance_name)
{
Gem5System *ret = new Gem5System(
new CxxConfigManager(*(module->config_file)),
system_name, instance_name);
return ret;
}
const std::string &
Gem5Control::getVersion() const
{
return version;
}
void
Gem5Control::setVersion(const std::string &new_version)
{
if (version != "")
fatal("Gem5Control::setVersion called for a second time");
version = new_version;
}
Gem5TopLevelModule::Gem5TopLevelModule(sc_core::sc_module_name name,
const std::string &config_filename) :
Gem5SystemC::Module(name),
config_file(NULL),
root_manager(NULL)
{
SC_THREAD(run);
cxxConfigInit();
/* Pass DPRINTF messages to SystemC */
Trace::setDebugLogger(&logger);
/* @todo need this as an option */
Gem5SystemC::setTickFrequency();
/* Make a SystemC-synchronising event queue and install it as the
* sole top level gem5 EventQueue */
Gem5SystemC::Module::setupEventQueues(*this);
if (sc_core::sc_get_time_resolution() !=
sc_core::sc_time(1, sc_core::SC_PS))
{
fatal("Time resolution must be set to 1 ps for gem5 to work");
}
/* Enable keyboard interrupt, async I/O etc. */
initSignals();
/* Enable stats */
Stats::initSimStats();
Stats::registerHandlers(CxxConfig::statsReset, CxxConfig::statsDump);
Trace::enable();
config_file = new CxxIniFile();
if (!config_file->load(config_filename)) {
fatal("Gem5TopLevelModule: Can't open config file: %s",
config_filename);
}
root_manager = new CxxConfigManager(*config_file);
CxxConfig::statsEnable();
/* Make the root object */
try {
SimObject *root = root_manager->findObject("root", false);
/* Make sure we don't traverse into root's children */
root_manager->objectsInOrder.push_back(root);
root_manager->instantiate(false);
root_manager->initState();
root_manager->startup();
} catch (CxxConfigManager::Exception &e) {
fatal("Config problem in Gem5TopLevelModule: %s: %s",
e.name, e.message);
}
}
Gem5TopLevelModule::~Gem5TopLevelModule()
{
delete config_file;
delete root_manager;
}
void
Gem5TopLevelModule::run()
{
GlobalSimLoopExitEvent *exit_event = NULL;
exit_event = simulate();
std::cerr << "Exit at tick " << curTick()
<< ", cause: " << exit_event->getCause() << '\n';
getEventQueue(0)->dump();
}
void
Gem5TopLevelModule::end_of_elaboration()
{
for (auto i = endOfElaborationFuncs.begin();
i != endOfElaborationFuncs.end(); ++i)
{
(*i)();
}
}
}
Gem5SystemC::Gem5Control *
makeGem5Control(const std::string &config_filename)
{
return new Gem5SystemC::Gem5Control(config_filename);
}