misc: Reorder sources in util/tlm and rewrite build scripts

* Use one SConstruct to build everything instead of one SConstruct for
  each example.
* Introduce SConscripts for sub-directories.
* Build in 'build' instead of the source tree.
* Build and link to SystemC from the ext/systemc directory. This
  ensures that SystemC does not need to be installed on the host and
  avoids possible issues caused by an incompatible SystemC build.
* Update the README and add some minor fixes

Change-Id: I641ed94f542626864fb7af499ad1be8fd4ad929f
Reviewed-on: https://gem5-review.googlesource.com/3480
Reviewed-by: Matthias Jung <jungma@eit.uni-kl.de>
Reviewed-by: Jason Lowe-Power <jason@lowepower.com>
Maintainer: Jason Lowe-Power <jason@lowepower.com>

1 files changed, 0 insertions, 223 deletions

diff --git a/util/tlm/sim_control.cc b/util/tlm/sim_control.cc
deleted file mode 100644
index a96daf2c8..000000000
--- a/util/tlm/sim_control.cc
+++ /dev/null
@@ -1,223 +0,0 @@
-/*
- * Copyright (c) 2015, University of Kaiserslautern
- * Copyright (c) 2016, Dresden University of Technology (TU Dresden)
- * 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
- *          Abdul Mutaal Ahmad
- *          Christian Menard
- */
-
-/**
- * @file
- *
- *  Example top level file for SystemC-TLM integration with C++-only
- *  instantiation.
- *
- */
-
-#include <systemc>
-#include <tlm>
-
-#include "sc_master_port.hh"
-#include "sc_slave_port.hh"
-#include "sim/cxx_config_ini.hh"
-#include "sim/init_signals.hh"
-#include "sim/stat_control.hh"
-#include "sim_control.hh"
-#include "stats.hh"
-
-// Define global string variable decalred in stats.hh
-std::string filename = "m5out/stats-systemc.txt";
-
-namespace Gem5SystemC
-{
-
-Gem5SimControl* Gem5SimControl::instance = nullptr;
-
-Gem5SimControl::Gem5SimControl(sc_core::sc_module_name name,
-                               const std::string& configFile,
-                               uint64_t simulationEnd,
-                               const std::string& gem5DebugFlags)
-  : Gem5SystemC::Module(name),
-    simulationEnd(simulationEnd)
-{
-    SC_THREAD(run);
-
-    if (instance != nullptr) {
-        panic("Tried to instantiate Gem5SimControl more than once!\n");
-    }
-    instance = this;
-
-    cxxConfigInit();
-
-    // register the systemc slave and master port handler
-    ExternalSlave::registerHandler("tlm_slave", new SCSlavePortHandler(*this));
-    ExternalMaster::registerHandler("tlm_master",
-                                    new SCMasterPortHandler(*this));
-
-    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::enable();
-
-    CxxConfigFileBase* conf = new CxxIniFile();
-
-    if (configFile.empty()) {
-        std::cerr << "No gem5 config file specified!\n";
-        std::exit(EXIT_FAILURE);
-    }
-
-    if (!conf->load(configFile.c_str())) {
-        std::cerr << "Can't open config file: " << configFile << '\n';
-        std::exit(EXIT_FAILURE);
-    }
-
-    config_manager = new CxxConfigManager(*conf);
-
-    // parse debug flags string and clear/set flags accordingly
-    std::stringstream ss;
-    ss.str(gem5DebugFlags);
-    std::string flag;
-    while (std::getline(ss, flag, ' ')) {
-        if (flag.at(0) == '-') {
-            flag.erase(0, 1); // remove the '-'
-            clearDebugFlag(flag.c_str());
-        }
-        else {
-            setDebugFlag(flag.c_str());
-        }
-    }
-
-    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
-Gem5SimControl::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
-Gem5SimControl::run()
-{
-    // notify callback
-    beforeSimulate();
-
-    GlobalSimLoopExitEvent *exit_event = NULL;
-
-    if (simulationEnd == 0) {
-        exit_event = simulate();
-    } else {
-        exit_event = simulate(simulationEnd);
-    }
-
-    std::cerr << "Exit at tick " << curTick()
-              << ", cause: " << exit_event->getCause() << '\n';
-
-    getEventQueue(0)->dump();
-
-    // notify callback
-    afterSimulate();
-
-#if TRY_CLEAN_DELETE
-    config_manager->deleteObjects();
-#endif
-}
-
-void
-Gem5SimControl::registerSlavePort(const std::string& name, SCSlavePort* port)
-{
-    if (slavePorts.find(name) == slavePorts.end()) {
-        slavePorts[name] = port;
-    } else {
-        std::cerr << "Slave Port " << name << " is already registered!\n";
-        std::exit(EXIT_FAILURE);
-    }
-}
-
-void
-Gem5SimControl::registerMasterPort(const std::string& name, SCMasterPort* port)
-{
-    if (masterPorts.find(name) == masterPorts.end()) {
-        masterPorts[name] = port;
-    } else {
-        std::cerr << "Master Port " << name << " is already registered!\n";
-        std::exit(EXIT_FAILURE);
-    }
-}
-
-SCSlavePort*
-Gem5SimControl::getSlavePort(const std::string& name)
-{
-    if (slavePorts.find(name) == slavePorts.end()) {
-        std::cerr << "Slave Port " << name << " was not found!\n";
-        std::exit(EXIT_FAILURE);
-    }
-
-    return slavePorts.at(name);
-}
-
-SCMasterPort*
-Gem5SimControl::getMasterPort(const std::string& name)
-{
-    if (masterPorts.find(name) == masterPorts.end()) {
-        std::cerr << "Master Port " << name << " was not found!\n";
-        std::exit(EXIT_FAILURE);
-    }
-
-    return masterPorts.at(name);
-}
-
-}