gem5/util/tlm/main.cc

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/*
* Copyright (c) 2015, University of Kaiserslautern
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* 2. 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.
*
* 3. Neither the name of the copyright holder 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 HOLDER
* 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: Matthias Jung
*/
/**
* @file
*
* Example top level file for SystemC-TLM integration with C++-only
* instantiation.
*
*/
#include <tlm_utils/simple_target_socket.h>
#include <cstdlib>
#include <iomanip>
#include <iostream>
#include <sstream>
#include <systemc>
#include <tlm>
#include <typeinfo>
#include "base/statistics.hh"
#include "base/str.hh"
#include "base/trace.hh"
#include "cpu/base.hh"
#include "sc_logger.hh"
#include "sc_module.hh"
#include "sc_port.hh"
#include "sc_target.hh"
#include "sim/cxx_config_ini.hh"
#include "sim/cxx_manager.hh"
#include "sim/init_signals.hh"
#include "sim/serialize.hh"
#include "sim/simulate.hh"
#include "sim/stat_control.hh"
#include "sim/system.hh"
#include "stats.hh"
void usage(const std::string &prog_name)
{
std::cerr << "Usage: " << prog_name << (
" <config_file.ini> [ <option> ]\n\n"
"OPTIONS:\n"
" -o <offset> -- set memory offset\n"
" -p <object> <param> <value> -- set a parameter\n"
" -v <object> <param> <values> -- set a vector parameter from a\n"
" comma separated values string\n"
" -d <flag> -- set a debug flag\n"
" (-<flag> clear a flag)\n"
" -D -- debug on\n"
" -e <ticks> -- end of simulation after a \n"
" given number of ticks\n"
"\n"
);
std::exit(EXIT_FAILURE);
}
class SimControl : public Gem5SystemC::Module
{
protected:
int argc;
char **argv;
CxxConfigManager *config_manager;
Gem5SystemC::Logger logger;
Tick sim_end;
bool debug;
unsigned int offset;
public:
SC_HAS_PROCESS(SimControl);
SimControl(sc_core::sc_module_name name, int argc_, char **argv_);
void before_end_of_elaboration();
bool getDebugFlag() { return debug; }
unsigned int getOffset() { return offset; }
void run();
};
SimControl::SimControl(sc_core::sc_module_name name,
int argc_,
char **argv_) : Gem5SystemC::Module(name),
argc(argc_),
argv(argv_)
{
SC_THREAD(run);
std::string prog_name(argv[0]);
unsigned int arg_ptr = 1;
if (argc == 1) {
usage(prog_name);
}
cxxConfigInit();
Gem5SystemC::registerSCPorts();
Trace::setDebugLogger(&logger);
Gem5SystemC::setTickFrequency();
sc_core::sc_set_time_resolution(1, sc_core::SC_PS);
Gem5SystemC::Module::setupEventQueues(*this);
initSignals();
Stats::initSimStats();
Stats::registerHandlers(CxxConfig::statsReset, CxxConfig::statsDump);
Trace::enabled = true;
sim_end = 0;
debug = false;
offset = 0;
const std::string config_file(argv[arg_ptr]);
CxxConfigFileBase *conf = new CxxIniFile();
if (!conf->load(config_file.c_str())) {
std::cerr << "Can't open config file: " << config_file << '\n';
std::exit(EXIT_FAILURE);
}
arg_ptr++;
config_manager = new CxxConfigManager(*conf);
try {
while (arg_ptr < argc) {
std::string option(argv[arg_ptr]);
arg_ptr++;
unsigned num_args = argc - arg_ptr;
if (option == "-p") {
if (num_args < 3) {
usage(prog_name);
}
config_manager->setParam(argv[arg_ptr], argv[arg_ptr + 1],
argv[arg_ptr + 2]);
arg_ptr += 3;
} else if (option == "-v") {
std::vector<std::string> values;
if (num_args < 3) {
usage(prog_name);
}
tokenize(values, argv[2], ',');
config_manager->setParamVector(argv[arg_ptr],
argv[arg_ptr],
values);
arg_ptr += 3;
} else if (option == "-d") {
if (num_args < 1) {
usage(prog_name);
}
if (argv[arg_ptr][0] == '-') {
clearDebugFlag(argv[arg_ptr] + 1);
} else {
setDebugFlag(argv[arg_ptr]);
}
arg_ptr++;
} else if (option == "-e") {
if (num_args < 1) {
usage(prog_name);
}
std::istringstream(argv[arg_ptr]) >> sim_end;
arg_ptr++;
} else if (option == "-D") {
debug = true;
} else if (option == "-o") {
if (num_args < 1) {
usage(prog_name);
}
std::istringstream(argv[arg_ptr]) >> offset;
arg_ptr++;
/* code */
} else {
usage(prog_name);
}
}
} catch (CxxConfigManager::Exception &e) {
std::cerr << e.name << ": " << e.message << "\n";
std::exit(EXIT_FAILURE);
}
CxxConfig::statsEnable();
getEventQueue(0)->dump();
try {
config_manager->instantiate();
} catch (CxxConfigManager::Exception &e) {
std::cerr << "Config problem in sim object "
<< e.name << ": " << e.message << "\n";
std::exit(EXIT_FAILURE);
}
}
void
SimControl::before_end_of_elaboration()
{
try {
config_manager->initState();
config_manager->startup();
} catch (CxxConfigManager::Exception &e) {
std::cerr << "Config problem in sim object "
<< e.name << ": " << e.message << "\n";
std::exit(EXIT_FAILURE);
}
}
void
SimControl::run()
{
GlobalSimLoopExitEvent *exit_event = NULL;
if(sim_end == 0) {
exit_event = simulate();
} else {
exit_event = simulate(sim_end);
}
std::cerr << "Exit at tick " << curTick()
<< ", cause: " << exit_event->getCause() << '\n';
getEventQueue(0)->dump();
#if TRY_CLEAN_DELETE
config_manager->deleteObjects();
#endif
}
void
reportHandler(const sc_core::sc_report &report,
const sc_core::sc_actions &actions)
{
uint64_t systemc_time = report.get_time().value();
uint64_t gem5_time = curTick();
std::cerr << report.get_time();
if (gem5_time < systemc_time) {
std::cerr << " (<) ";
} else if (gem5_time > systemc_time) {
std::cerr << " (!) ";
} else {
std::cerr << " (=) ";
}
std::cerr << ": " << report.get_msg_type()
<< ' ' << report.get_msg() << '\n';
}
int
sc_main(int argc, char **argv)
{
sc_core::sc_report_handler::set_handler(reportHandler);
SimControl sim_control("gem5", argc, argv);
Target *memory;
tlm::tlm_initiator_socket <> *mem_port =
dynamic_cast<tlm::tlm_initiator_socket<> *>(
sc_core::sc_find_object("gem5.memory")
);
if (mem_port) {
SC_REPORT_INFO("sc_main", "Port Found");
unsigned long long int size = 512*1024*1024ULL;
memory = new Target("memory",
sim_control.getDebugFlag(),
size,
sim_control.getOffset());
memory->socket.bind(*mem_port);
} else {
SC_REPORT_FATAL("sc_main", "Port Not Found");
std::exit(EXIT_FAILURE);
}
sc_core::sc_start();
SC_REPORT_INFO("sc_main", "End of Simulation");
return EXIT_SUCCESS;
}