32d3b0aa36
sim/main.cc:
get the exit condition right
--HG--
extra : convert_revision : 0dada3d68492c46981c51d3de0de409b282bb13b
483 lines
15 KiB
C++
483 lines
15 KiB
C++
/*
|
|
* Copyright (c) 2000-2004 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 <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/pollevent.hh"
|
|
#include "base/statistics.hh"
|
|
#include "base/str.hh"
|
|
#include "base/time.hh"
|
|
#include "cpu/base_cpu.hh"
|
|
#include "cpu/full_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/universe.hh"
|
|
#include "sim/pyconfig/pyconfig.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
|
|
const char *myProgName = "";
|
|
|
|
/// Show brief help message.
|
|
static void
|
|
showBriefHelp(ostream &out)
|
|
{
|
|
out << "Usage: " << myProgName
|
|
<< " [-hnu] [-Dname[=def]] [-Uname] [-I[dir]] "
|
|
<< "<config-spec> [<config-spec> ...]\n"
|
|
<< "[] [<config file> ...]\n"
|
|
<< " -h: print long help (including parameter listing)\n"
|
|
<< " -u: don't quit on unreferenced parameters\n"
|
|
<< " -D,-U,-I: passed to cpp for preprocessing .ini files\n"
|
|
<< " <config-spec>: config file name (.ini or .py) or\n"
|
|
<< " single param (--<section>:<param>=<value>)"
|
|
<< endl;
|
|
}
|
|
|
|
/// Show verbose help message. Includes parameter listing from
|
|
/// showBriefHelp(), plus an exhaustive list of ini-file parameters
|
|
/// and SimObjects (with their parameters).
|
|
static void
|
|
showLongHelp(ostream &out)
|
|
{
|
|
showBriefHelp(out);
|
|
|
|
out << endl
|
|
<< endl
|
|
<< "-----------------" << endl
|
|
<< "Global Parameters" << endl
|
|
<< "-----------------" << endl
|
|
<< endl;
|
|
|
|
ParamContext::describeAllContexts(out);
|
|
|
|
out << endl
|
|
<< endl
|
|
<< "-----------------" << endl
|
|
<< "Simulator Objects" << endl
|
|
<< "-----------------" << endl
|
|
<< endl;
|
|
|
|
SimObjectClass::describeAllClasses(out);
|
|
}
|
|
|
|
/// Print welcome message.
|
|
static 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).
|
|
///
|
|
static 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;
|
|
}
|
|
|
|
|
|
///
|
|
/// The simulator configuration database. This is the union of all
|
|
/// specified .ini files. This shouldn't need to be visible outside
|
|
/// this file, as it is passed as a parameter to all the param-parsing
|
|
/// routines.
|
|
///
|
|
static IniFile simConfigDB;
|
|
|
|
/// M5 entry point.
|
|
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);
|
|
|
|
sayHello(cerr);
|
|
|
|
// Initialize statistics database
|
|
Stats::InitSimStats();
|
|
|
|
vector<char *> cppArgs;
|
|
|
|
// Should we quit if there are unreferenced parameters? By
|
|
// default, yes... it's a good way of catching typos in
|
|
// section/parameter names (which otherwise go by silently). Use
|
|
// -u to override.
|
|
bool quitOnUnreferenced = true;
|
|
|
|
bool python_initialized = false;
|
|
|
|
// 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 option,
|
|
// else treat it as a configuration file name and load it
|
|
if (arg_str[0] == '-') {
|
|
|
|
// switch on second char
|
|
switch (arg_str[1]) {
|
|
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;
|
|
}
|
|
|
|
case 'h':
|
|
// -h: show help
|
|
showLongHelp(cerr);
|
|
exit(1);
|
|
|
|
case 'u':
|
|
// -u: don't quit on unreferenced parameters
|
|
quitOnUnreferenced = false;
|
|
break;
|
|
|
|
case 'D':
|
|
case 'U':
|
|
// cpp options: record & pass to cpp. Note that these
|
|
// cannot have spaces, i.e., '-Dname=val' is OK, but
|
|
// '-D name=val' is not. I don't consider this a
|
|
// problem, since even though gnu cpp accepts the
|
|
// latter, other cpp implementations do not (Tru64,
|
|
// for one).
|
|
cppArgs.push_back(arg_str);
|
|
break;
|
|
|
|
case 'I': {
|
|
// We push -I as an argument to cpp
|
|
cppArgs.push_back(arg_str);
|
|
|
|
string arg = arg_str + 2;
|
|
eat_white(arg);
|
|
|
|
// Send this as the python path
|
|
addPythonPath(arg);
|
|
} break;
|
|
|
|
case 'P':
|
|
if (!python_initialized) {
|
|
initPythonConfig();
|
|
python_initialized = true;
|
|
}
|
|
writePythonString(arg_str + 2);
|
|
writePythonString("\n");
|
|
|
|
case 'E':
|
|
if (putenv(arg_str + 2) == -1)
|
|
panic("putenv: %s\n", strerror(errno));
|
|
break;
|
|
|
|
case '-':
|
|
// command-line configuration parameter:
|
|
// '--<section>:<parameter>=<value>'
|
|
if (!simConfigDB.add(arg_str + 2)) {
|
|
// parse error
|
|
ccprintf(cerr,
|
|
"Could not parse configuration argument '%s'\n"
|
|
"Expecting --<section>:<parameter>=<value>\n",
|
|
arg_str);
|
|
exit(0);
|
|
}
|
|
break;
|
|
|
|
default:
|
|
showBriefHelp(cerr);
|
|
ccprintf(cerr, "Fatal: invalid argument '%s'\n", arg_str);
|
|
exit(0);
|
|
}
|
|
}
|
|
else {
|
|
// no '-', treat as config file name
|
|
|
|
// make STL string out of file name
|
|
string filename(arg_str);
|
|
|
|
int ext_loc = filename.rfind(".");
|
|
|
|
string ext =
|
|
(ext_loc != string::npos) ? filename.substr(ext_loc) : "";
|
|
|
|
if (ext == ".ini") {
|
|
if (!simConfigDB.loadCPP(filename, cppArgs)) {
|
|
cprintf("Error processing file %s\n", filename);
|
|
exit(1);
|
|
}
|
|
} else if (ext == ".py" || ext == ".mpy") {
|
|
if (!python_initialized) {
|
|
initPythonConfig();
|
|
python_initialized = true;
|
|
}
|
|
loadPythonConfig(filename);
|
|
}
|
|
else {
|
|
cprintf("Config file name '%s' must end in '.py' or '.ini'.\n",
|
|
filename);
|
|
exit(1);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (python_initialized && !finishPythonConfig(simConfigDB)) {
|
|
cprintf("Error processing python code\n");
|
|
exit(1);
|
|
}
|
|
|
|
// The configuration database is now complete; start processing it.
|
|
|
|
// Parse and check all non-config-hierarchy parameters.
|
|
ParamContext::parseAllContexts(simConfigDB);
|
|
ParamContext::checkAllContexts();
|
|
|
|
// Print header info into stats file. Can't do this sooner since
|
|
// the stat file name is set via a .ini param... thus it just got
|
|
// opened above during ParamContext::checkAllContexts().
|
|
|
|
// Now process the configuration hierarchy and create the SimObjects.
|
|
ConfigHierarchy configHierarchy(simConfigDB);
|
|
configHierarchy.build();
|
|
configHierarchy.createSimObjects();
|
|
|
|
// 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 (outputStream != &cout && outputStream != &cerr)
|
|
sayHello(*outputStream);
|
|
|
|
// Echo command line and all parameter settings to stats file as well.
|
|
echoCommandLine(argc, argv, *outputStream);
|
|
ParamContext::showAllContexts(*configStream);
|
|
|
|
// 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 (simConfigDB.printUnreferenced() && quitOnUnreferenced) {
|
|
cerr << "Fatal: unreferenced .ini sections/entries." << endl
|
|
<< "If this is not an error, add 'unref_section_ok=y' or "
|
|
<< "'unref_entries_ok=y' to the appropriate sections "
|
|
<< "to suppress this message." << endl;
|
|
exit(1);
|
|
}
|
|
|
|
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();
|
|
|
|
// Nothing to simulate if we don't have at least one CPU somewhere.
|
|
if (BaseCPU::numSimulatedCPUs() == 0) {
|
|
cerr << "Fatal: no CPUs to simulate." << endl;
|
|
exit(1);
|
|
}
|
|
|
|
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;
|
|
}
|