/*
- * 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
* 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: Nathan Binkert
*/
-///
-/// @file sim/main.cc
-///
-#include <Python.h> // must be before system headers... see Python docs
-
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <errno.h>
-#include <libgen.h>
-#include <stdlib.h>
-#include <signal.h>
-
-#include <list>
-#include <string>
-#include <vector>
-
-#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
-}
-
-/// Simulator executable name
-char *myProgName = "";
+#include <Python.h>
-///
-/// Echo the command line for posterity in such a way that it can be
-/// used to rerun the same simulation (given the same .ini files).
-///
-void
-echoCommandLine(int argc, char **argv, ostream &out)
-{
- out << "command line: " << argv[0];
- for (int i = 1; i < argc; i++) {
- string arg(argv[i]);
-
- out << ' ';
-
- // If the arg contains spaces, we need to quote it.
- // The rest of this is overkill to make it look purty.
-
- // print dashes first outside quotes
- int non_dash_pos = arg.find_first_not_of("-");
- out << arg.substr(0, non_dash_pos); // print dashes
- string body = arg.substr(non_dash_pos); // the rest
-
- // if it's an assignment, handle the lhs & rhs separately
- int eq_pos = body.find("=");
- if (eq_pos == string::npos) {
- out << quote(body);
- }
- else {
- string lhs(body.substr(0, eq_pos));
- string rhs(body.substr(eq_pos + 1));
-
- out << quote(lhs) << "=" << quote(rhs);
- }
- }
- out << endl << endl;
-}
+#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)
{
- // Save off program name
- myProgName = argv[0];
+ 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();
- // Python embedded interpreter invocation
+#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]);
- const char *fileName = Py_GetProgramFullPath();
- Py_Initialize();
- PySys_SetArgv(argc, argv);
-
- // loadSwigModules();
-
- // Set Python module path to include current file to find embedded
- // zip archive
- if (PyRun_SimpleString("import sys") != 0)
- panic("Python error importing 'sys' module\n");
- string pathCmd = csprintf("sys.path[1:1] = ['%s']", fileName);
- if (PyRun_SimpleString(pathCmd.c_str()) != 0)
- panic("Python error setting sys.path\n");
-
- // Pass compile timestamp string to Python
- extern const char *compileDate; // from date.cc
- string setCompileDate = csprintf("compileDate = '%s'", compileDate);
- if (PyRun_SimpleString(setCompileDate.c_str()) != 0)
- panic("Python error setting compileDate\n");
-
- // PyRun_InteractiveLoop(stdin, "stdin");
- // m5/__init__.py currently contains main argv parsing loop etc.,
- // and will write out config.ini file before returning.
- if (PyImport_ImportModule("defines") == NULL)
- panic("Python error importing 'defines.py'\n");
- if (PyImport_ImportModule("m5") == NULL)
- panic("Python error importing 'm5' module\n");
- Py_Finalize();
-
- 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 command line and all parameter settings to stats file as well.
- echoCommandLine(argc, argv, *outputStream);
- 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();
-
- warn("Entering event queue. Starting simulation...\n");
- SimStartup();
- while (!mainEventQueue.empty()) {
- assert(curTick <= mainEventQueue.nextTick() &&
- "event scheduled in the past");
+ // Register native modules with Python's init system before
+ // initializing the interpreter.
+ registerNativeModules();
- // forward current cycle to the time of the first event on the
- // queue
- curTick = mainEventQueue.nextTick();
- mainEventQueue.serviceOne();
-
- 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);
- }
+ // initialize embedded Python interpreter
+ Py_Initialize();
- if (async_exit) {
- async_exit = false;
- new SimExitEvent("User requested STOP");
- }
+ // Initialize the embedded m5 python library
+ ret = EmbeddedPython::initAll();
- if (async_io || async_alarm) {
- async_io = false;
- async_alarm = false;
- pollQueue.service();
- }
- }
+ if (ret == 0) {
+ // start m5
+ ret = m5Main(argc, argv);
}
- // This should never happen... every conceivable way for the
- // simulation to terminate (hit max cycles/insts, signal,
- // simulated system halts/exits) generates an exit event, so we
- // should never run out of events on the queue.
- exitNow("no events on event loop! All CPUs must be idle.", 1);
+ // clean up Python intepreter.
+ Py_Finalize();
- return 0;
+ return ret;
}
projects / gem5.git / blobdiff