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/*
* 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
* 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.
*
* Authors: Nathan Binkert
*/
#include <Python.h>
#include <marshal.h>
#include <signal.h>
#include <iostream>
#include <string>
#include <zlib.h>
#include "base/cprintf.hh"
#include "base/misc.hh"
#include "base/types.hh"
#include "sim/async.hh"
#include "sim/core.hh"
#include "sim/init.hh"
using namespace std;
/// Stats signal handler.
void
dumpStatsHandler(int sigtype)
{
async_event = true;
async_statdump = true;
}
void
dumprstStatsHandler(int sigtype)
{
async_event = true;
async_statdump = true;
async_statreset = true;
}
/// Exit signal handler.
void
exitNowHandler(int sigtype)
{
async_event = true;
async_exit = true;
}
/// Abort signal handler.
void
abortHandler(int sigtype)
{
ccprintf(cerr, "Program aborted at cycle %d\n", curTick);
}
/*
* M5 can do several special things when various signals are sent.
* None are mandatory.
*/
void
initSignals()
{
// Floating point exceptions may happen on misspeculated paths, so
// ignore them
signal(SIGFPE, SIG_IGN);
// We use SIGTRAP sometimes for debugging
signal(SIGTRAP, SIG_IGN);
// Dump intermediate stats
signal(SIGUSR1, dumpStatsHandler);
// Dump intermediate stats and reset them
signal(SIGUSR2, dumprstStatsHandler);
// Exit cleanly on Interrupt (Ctrl-C)
signal(SIGINT, exitNowHandler);
// Print out cycle number on abort
signal(SIGABRT, abortHandler);
}
/*
* Uncompress and unmarshal the code object stored in the
* EmbeddedPyModule
*/
PyObject *
getCode(const EmbeddedPyModule *pymod)
{
assert(pymod->zlen == pymod->code_end - pymod->code);
Bytef *marshalled = new Bytef[pymod->mlen];
uLongf unzlen = pymod->mlen;
int ret = uncompress(marshalled, &unzlen, (const Bytef *)pymod->code,
pymod->zlen);
if (ret != Z_OK)
panic("Could not uncompress code: %s\n", zError(ret));
assert(unzlen == pymod->mlen);
return PyMarshal_ReadObjectFromString((char *)marshalled, pymod->mlen);
}
// The python library is totally messed up with respect to constness,
// so make a simple macro to make life a little easier
#define PyCC(x) (const_cast<char *>(x))
/*
* Load and initialize all of the python parts of M5, including Swig
* and the embedded module importer.
*/
int
initM5Python()
{
extern void initSwig();
// initialize SWIG modules. initSwig() is autogenerated and calls
// all of the individual swig initialization functions.
initSwig();
// Load the importer module
PyObject *code = getCode(&embeddedPyImporter);
PyObject *module = PyImport_ExecCodeModule(PyCC("importer"), code);
if (!module) {
PyErr_Print();
return 1;
}
// Load the rest of the embedded python files into the embedded
// python importer
const EmbeddedPyModule *pymod = &embeddedPyModules[0];
while (pymod->filename) {
PyObject *code = getCode(pymod);
PyObject *result = PyObject_CallMethod(module, PyCC("add_module"),
PyCC("ssO"), pymod->filename, pymod->modpath, code);
if (!result) {
PyErr_Print();
return 1;
}
Py_DECREF(result);
++pymod;
}
return 0;
}
/*
* Start up the M5 simulator. This mostly vectors into the python
* main function.
*/
int
m5Main(int argc, char **argv)
{
PySys_SetArgv(argc, argv);
// We have to set things up in the special __main__ module
PyObject *module = PyImport_AddModule(PyCC("__main__"));
if (module == NULL)
panic("Could not import __main__");
PyObject *dict = PyModule_GetDict(module);
// import the main m5 module
PyObject *result;
result = PyRun_String("import m5", Py_file_input, dict, dict);
if (!result) {
PyErr_Print();
return 1;
}
Py_DECREF(result);
// Start m5
result = PyRun_String("m5.main()", Py_file_input, dict, dict);
if (!result) {
PyErr_Print();
return 1;
}
Py_DECREF(result);
return 0;
}
PyMODINIT_FUNC
initm5(void)
{
initM5Python();
PyImport_ImportModule(PyCC("m5"));
}
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