/*
- * Copyright (c) 2000-2005 The Regents of The University of Michigan
+ * Copyright (c) 2008 The Hewlett-Packard Development Company
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* (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: Steve Raasch
- * Nathan Binkert
- * Steve Reinhardt
+ * Authors: Nathan Binkert
*/
-///
-/// @file sim/main.cc
-///
-#include <Python.h> // must be before system headers... see Python docs
+#include <Python.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <errno.h>
-#include <libgen.h>
-#include <stdlib.h>
-#include <signal.h>
-#include <unistd.h>
-
-#include <list>
-#include <string>
-#include <vector>
-
-#include "base/callback.hh"
-#include "base/inifile.hh"
-#include "base/misc.hh"
-#include "base/output.hh"
-#include "base/pollevent.hh"
-#include "base/statistics.hh"
-#include "base/str.hh"
-#include "base/time.hh"
-#include "cpu/base.hh"
-#include "cpu/smt.hh"
-#include "sim/async.hh"
-#include "sim/builder.hh"
-#include "sim/configfile.hh"
-#include "sim/host.hh"
-#include "sim/sim_events.hh"
-#include "sim/sim_exit.hh"
-#include "sim/sim_object.hh"
-#include "sim/stat_control.hh"
-#include "sim/stats.hh"
-#include "sim/root.hh"
-
-using namespace std;
-
-// See async.h.
-volatile bool async_event = false;
-volatile bool async_dump = false;
-volatile bool async_dumpreset = false;
-volatile bool async_exit = false;
-volatile bool async_io = false;
-volatile bool async_alarm = false;
-
-/// Stats signal handler.
-void
-dumpStatsHandler(int sigtype)
-{
- async_event = true;
- async_dump = true;
-}
-
-void
-dumprstStatsHandler(int sigtype)
-{
- async_event = true;
- async_dumpreset = true;
-}
-
-/// Exit signal handler.
-void
-exitNowHandler(int sigtype)
-{
- async_event = true;
- async_exit = true;
-}
-
-/// Abort signal handler.
-void
-abortHandler(int sigtype)
-{
- cerr << "Program aborted at cycle " << curTick << endl;
-
-#if TRACING_ON
- // dump trace buffer, if there is one
- Trace::theLog.dump(cerr);
-#endif
-}
-
-
-const char *briefCopyright =
-"Copyright (c) 2001-2006\n"
-"The Regents of The University of Michigan\n"
-"All Rights Reserved\n";
-
-/// Print welcome message.
-void
-sayHello(ostream &out)
-{
- extern const char *compileDate; // from date.cc
-
- ccprintf(out, "M5 Simulator System\n");
- // display copyright
- ccprintf(out, "%s\n", briefCopyright);
- ccprintf(out, "M5 compiled %d\n", compileDate);
- ccprintf(out, "M5 started %s\n", Time::start);
-
- char *host = getenv("HOSTNAME");
- if (!host)
- host = getenv("HOST");
-
- if (host)
- ccprintf(out, "M5 executing on %s\n", host);
-}
-
-
-extern "C" { void init_main(); }
+#include "sim/init.hh"
+#include "sim/init_signals.hh"
+// main() is now pretty stripped down and just sets up python and then
+// calls initM5Python which loads the various embedded python modules
+// into the python environment and then starts things running by
+// calling m5Main.
int
main(int argc, char **argv)
{
- sayHello(cerr);
+ int ret;
- signal(SIGFPE, SIG_IGN); // may occur on misspeculated paths
- signal(SIGTRAP, SIG_IGN);
- signal(SIGUSR1, dumpStatsHandler); // dump intermediate stats
- signal(SIGUSR2, dumprstStatsHandler); // dump and reset stats
- signal(SIGINT, exitNowHandler); // dump final stats and exit
- signal(SIGABRT, abortHandler);
+ // Initialize m5 special signal handling.
+ initSignals();
+#if PY_MAJOR_VERSION >= 3
+ std::unique_ptr<wchar_t[], decltype(&PyMem_RawFree)> program(
+ Py_DecodeLocale(argv[0], NULL),
+ &PyMem_RawFree);
+ Py_SetProgramName(program.get());
+#else
Py_SetProgramName(argv[0]);
+#endif
- // default path to m5 python code is the currently executing
- // file... Python ZipImporter will find embedded zip archive
- char *pythonpath = argv[0];
-
- bool interactive = false;
- bool getopt_done = false;
- do {
- switch (getopt(argc, argv, "+p:i")) {
- // -p <path> prepends <path> to PYTHONPATH instead of
- // using built-in zip archive. Useful when
- // developing/debugging changes to built-in Python
- // libraries, as the new Python can be tested without
- // building a new m5 binary.
- case 'p':
- pythonpath = optarg;
- break;
-
- // -i forces entry into interactive mode after the
- // supplied script is executed (just like the -i option to
- // the Python interpreter).
- case 'i':
- interactive = true;
- break;
-
- case -1:
- getopt_done = true;
- break;
-
- default:
- fatal("Unrecognized option %c\n", optopt);
- }
- } while (!getopt_done);
-
- // Fix up argc & argv to hide arguments we just processed.
- // getopt() sets optind to the index of the first non-processed
- // argv element.
- argc -= optind;
- argv += optind;
-
- // Set up PYTHONPATH to make sure the m5 module is found
- string newpath(pythonpath);
-
- char *oldpath = getenv("PYTHONPATH");
- if (oldpath != NULL) {
- newpath += ":";
- newpath += oldpath;
- }
-
- if (setenv("PYTHONPATH", newpath.c_str(), true) == -1)
- fatal("setenv: %s\n", strerror(errno));
+ // Register native modules with Python's init system before
+ // initializing the interpreter.
+ registerNativeModules();
// initialize embedded Python interpreter
Py_Initialize();
- PySys_SetArgv(argc, argv);
- // initialize SWIG 'main' module
- init_main();
+ // Initialize the embedded m5 python library
+ ret = EmbeddedPython::initAll();
- if (argc > 0) {
- // extra arg(s): first is script file, remaining ones are args
- // to script file
- char *filename = argv[0];
- FILE *fp = fopen(filename, "r");
- if (!fp) {
- fatal("cannot open file '%s'\n", filename);
- }
-
- PyRun_AnyFile(fp, filename);
- } else {
- // no script file argument... force interactive prompt
- interactive = true;
- }
-
- if (interactive) {
- // The following code to import readline was copied from Python
- // 2.4.3's Modules/main.c.
- // Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006
- // Python Software Foundation; All Rights Reserved
- // We should only enable this if we're actually using an
- // interactive prompt.
- PyObject *v;
- v = PyImport_ImportModule("readline");
- if (v == NULL)
- PyErr_Clear();
- else
- Py_DECREF(v);
-
- PyRun_InteractiveLoop(stdin, "stdin");
+ if (ret == 0) {
+ // start m5
+ ret = m5Main(argc, argv);
}
// clean up Python intepreter.
Py_Finalize();
-}
-
-
-/// Initialize C++ configuration. Exported to Python via SWIG; invoked
-/// from m5.instantiate().
-void
-initialize()
-{
- configStream = simout.find("config.out");
-
- // The configuration database is now complete; start processing it.
- IniFile inifile;
- inifile.load("config.ini");
-
- // Initialize statistics database
- Stats::InitSimStats();
-
- // Now process the configuration hierarchy and create the SimObjects.
- ConfigHierarchy configHierarchy(inifile);
- configHierarchy.build();
- configHierarchy.createSimObjects();
-
- // Parse and check all non-config-hierarchy parameters.
- ParamContext::parseAllContexts(inifile);
- ParamContext::checkAllContexts();
-
- // Echo all parameter settings to stats file as well.
- ParamContext::showAllContexts(*configStream);
-
- // Any objects that can't connect themselves until after construction should
- // do so now
- SimObject::connectAll();
-
- // Do a second pass to finish initializing the sim objects
- SimObject::initAll();
-
- // Restore checkpointed state, if any.
- configHierarchy.unserializeSimObjects();
-
- // Done processing the configuration database.
- // Check for unreferenced entries.
- if (inifile.printUnreferenced())
- panic("unreferenced sections/entries in the intermediate ini file");
-
- SimObject::regAllStats();
-
- // uncomment the following to get PC-based execution-time profile
-#ifdef DO_PROFILE
- init_profile((char *)&_init, (char *)&_fini);
-#endif
-
- // Check to make sure that the stats package is properly initialized
- Stats::check();
-
- // Reset to put the stats in a consistent state.
- Stats::reset();
-
- SimStartup();
-}
-
-
-/** Simulate for num_cycles additional cycles. If num_cycles is -1
- * (the default), do not limit simulation; some other event must
- * terminate the loop. Exported to Python via SWIG.
- * @return The SimLoopExitEvent that caused the loop to exit.
- */
-SimLoopExitEvent *
-simulate(Tick num_cycles = -1)
-{
- warn("Entering event queue @ %d. Starting simulation...\n", curTick);
-
- // Fix up num_cycles. Special default value -1 means simulate
- // "forever"... schedule event at MaxTick just to be safe.
- // Otherwise it's a delta for additional cycles to simulate past
- // curTick, and thus must be non-negative.
- if (num_cycles == -1)
- num_cycles = MaxTick;
- else if (num_cycles < 0)
- fatal("simulate: num_cycles must be >= 0 (was %d)\n", num_cycles);
- else
- num_cycles = curTick + num_cycles;
-
- Event *limit_event = new SimLoopExitEvent(num_cycles,
- "simulate() limit reached");
-
- while (1) {
- // there should always be at least one event (the SimLoopExitEvent
- // we just scheduled) in the queue
- assert(!mainEventQueue.empty());
- assert(curTick <= mainEventQueue.nextTick() &&
- "event scheduled in the past");
-
- // forward current cycle to the time of the first event on the
- // queue
- curTick = mainEventQueue.nextTick();
- Event *exit_event = mainEventQueue.serviceOne();
- if (exit_event != NULL) {
- // hit some kind of exit event; return to Python
- // event must be subclass of SimLoopExitEvent...
- SimLoopExitEvent *se_event = dynamic_cast<SimLoopExitEvent *>(exit_event);
- if (se_event == NULL)
- panic("Bogus exit event class!");
-
- // if we didn't hit limit_event, delete it
- if (se_event != limit_event) {
- assert(limit_event->scheduled());
- limit_event->deschedule();
- delete limit_event;
- }
-
- return se_event;
- }
-
- if (async_event) {
- async_event = false;
- if (async_dump) {
- async_dump = false;
-
- using namespace Stats;
- SetupEvent(Dump, curTick);
- }
-
- if (async_dumpreset) {
- async_dumpreset = false;
-
- using namespace Stats;
- SetupEvent(Dump | Reset, curTick);
- }
-
- if (async_exit) {
- async_exit = false;
- exitSimLoop("user interrupt received");
- }
-
- if (async_io || async_alarm) {
- async_io = false;
- async_alarm = false;
- pollQueue.service();
- }
- }
- }
-
- // not reached... only exit is return on SimLoopExitEvent
-}
-
-/**
- * Queue of C++ callbacks to invoke on simulator exit.
- */
-CallbackQueue exitCallbacks;
-
-/**
- * Register an exit callback.
- */
-void
-registerExitCallback(Callback *callback)
-{
- exitCallbacks.add(callback);
-}
-
-/**
- * Do C++ simulator exit processing. Exported to SWIG to be invoked
- * when simulator terminates via Python's atexit mechanism.
- */
-void
-doExitCleanup()
-{
- exitCallbacks.process();
- exitCallbacks.clear();
-
- cout.flush();
-
- ParamContext::cleanupAllContexts();
- // print simulation stats
- Stats::DumpNow();
+ return ret;
}
projects / gem5.git / blobdiff