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Diffstat (limited to 'sim/main.cc')
| -rw-r--r-- | sim/main.cc | 433 |
1 files changed, 0 insertions, 433 deletions
diff --git a/sim/main.cc b/sim/main.cc deleted file mode 100644 index aecc171ed..000000000 --- a/sim/main.cc +++ /dev/null @@ -1,433 +0,0 @@ -/* - * Copyright (c) 2000-2005 The Regents of The University of Michigan - * All rights reserved. - * - * 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. - */ - -/// -/// @file sim/main.cc -/// -#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/copyright.hh" -#include "base/embedfile.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 "python/pyconfig.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 = ""; - -/// Show brief help message. -void -showBriefHelp(ostream &out) -{ - char *prog = basename(myProgName); - - ccprintf(out, "Usage:\n"); - ccprintf(out, -"%s [-d <dir>] [-E <var>[=<val>]] [-I <dir>] [-P <python>]\n" -" [--<var>=<val>] <config file>\n" -"\n" -" -d set the output directory to <dir>\n" -" -E set the environment variable <var> to <val> (or 'True')\n" -" -I add the directory <dir> to python's path\n" -" -P execute <python> directly in the configuration\n" -" --var=val set the python variable <var> to '<val>'\n" -" <configfile> config file name (ends in .py)\n\n", - prog); - - ccprintf(out, "%s -X\n -X extract embedded files\n\n", prog); - ccprintf(out, "%s -h\n -h print short help\n\n", prog); -} - -/// 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 on %d\n", compileDate); - - char *host = getenv("HOSTNAME"); - if (!host) - host = getenv("HOST"); - - if (host) - ccprintf(out, "M5 executing on %s\n", host); - - ccprintf(out, "M5 simulation started %s\n", Time::start); -} - -/// -/// 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; -} - -char * -getOptionString(int &index, int argc, char **argv) -{ - char *option = argv[index] + 2; - if (*option != '\0') - return option; - - // We didn't find an argument, it must be in the next variable. - if (++index >= argc) - panic("option string for option '%s' not found", argv[index - 1]); - - return argv[index]; -} - -int -main(int argc, char **argv) -{ - // Save off program name - myProgName = argv[0]; - - 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); - - bool configfile_found = false; - PythonConfig pyconfig; - string outdir; - - if (argc < 2) { - showBriefHelp(cerr); - exit(1); - } - - sayHello(cerr); - - // Parse command-line options. - // Since most of the complex options are handled through the - // config database, we don't mess with getopts, and just parse - // manually. - for (int i = 1; i < argc; ++i) { - char *arg_str = argv[i]; - - // if arg starts with '--', parse as a special python option - // of the format --<python var>=<string value>, if the arg - // starts with '-', it should be a simulator option with a - // format similar to getopt. In any other case, treat the - // option as a configuration file name and load it. - if (arg_str[0] == '-' && arg_str[1] == '-') { - string str = &arg_str[2]; - string var, val; - - if (!split_first(str, var, val, '=')) - panic("Could not parse configuration argument '%s'\n" - "Expecting --<variable>=<value>\n", arg_str); - - pyconfig.setVariable(var, val); - } else if (arg_str[0] == '-') { - char *option; - string var, val; - - // switch on second char - switch (arg_str[1]) { - case 'd': - outdir = getOptionString(i, argc, argv); - break; - - case 'h': - showBriefHelp(cerr); - exit(1); - - case 'E': - option = getOptionString(i, argc, argv); - if (!split_first(option, var, val, '=')) - val = "True"; - - if (setenv(var.c_str(), val.c_str(), true) == -1) - panic("setenv: %s\n", strerror(errno)); - break; - - case 'I': - option = getOptionString(i, argc, argv); - pyconfig.addPath(option); - break; - - case 'P': - option = getOptionString(i, argc, argv); - pyconfig.writeLine(option); - break; - - case 'X': { - list<EmbedFile> lst; - EmbedMap::all(lst); - list<EmbedFile>::iterator i = lst.begin(); - list<EmbedFile>::iterator end = lst.end(); - - while (i != end) { - cprintf("Embedded File: %s\n", i->name); - cout.write(i->data, i->length); - ++i; - } - - return 0; - } - - default: - showBriefHelp(cerr); - panic("invalid argument '%s'\n", arg_str); - } - } else { - string file(arg_str); - string base, ext; - - if (!split_last(file, base, ext, '.') || ext != "py") - panic("Config file '%s' must end in '.py'\n", file); - - pyconfig.load(file); - configfile_found = true; - } - } - - if (outdir.empty()) { - char *env = getenv("OUTPUT_DIR"); - outdir = env ? env : "."; - } - - simout.setDirectory(outdir); - - char *env = getenv("CONFIG_OUTPUT"); - if (!env) - env = "config.out"; - configStream = simout.find(env); - - if (!configfile_found) - panic("no configuration file specified!"); - - // The configuration database is now complete; start processing it. - IniFile inifile; - if (!pyconfig.output(inifile)) - panic("Error processing python code"); - - // 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(); - - // Print hello message to stats file if it's actually a file. If - // it's not (i.e. it's cout or cerr) then we already did it above. - if (simout.isFile(*outputStream)) - sayHello(*outputStream); - - // 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"); - - // 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); - } - - if (async_exit) { - async_exit = false; - new SimExitEvent("User requested STOP"); - } - - if (async_io || async_alarm) { - async_io = false; - async_alarm = false; - pollQueue.service(); - } - } - } - - // 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); - - return 0; -} |