main.cc revision 5202:ff56fa8c2091 
1/*
2 * Copyright (c) 2000-2005 The Regents of The University of Michigan
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
7 * met: redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer;
9 * redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution;
12 * neither the name of the copyright holders nor the names of its
13 * contributors may be used to endorse or promote products derived from
14 * this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 *
28 * Authors: Nathan Binkert
29 */
30
31#include <Python.h>
32#include <signal.h>
33
34#include <iostream>
35#include <string>
36
37#include "base/cprintf.hh"
38#include "base/misc.hh"
39#include "config/pythonhome.hh"
40#include "python/swig/init.hh"
41#include "sim/async.hh"
42#include "sim/host.hh"
43#include "sim/core.hh"
44
45using namespace std;
46
47/// Stats signal handler.
48void
49dumpStatsHandler(int sigtype)
50{
51    async_event = true;
52    async_statdump = true;
53}
54
55void
56dumprstStatsHandler(int sigtype)
57{
58    async_event = true;
59    async_statdump = true;
60    async_statreset = true;
61}
62
63/// Exit signal handler.
64void
65exitNowHandler(int sigtype)
66{
67    async_event = true;
68    async_exit = true;
69}
70
71/// Abort signal handler.
72void
73abortHandler(int sigtype)
74{
75    ccprintf(cerr, "Program aborted at cycle %d\n", curTick);
76}
77
78int
79python_main()
80{
81    PyObject *module;
82    PyObject *dict;
83    PyObject *result;
84
85    module = PyImport_AddModule(const_cast<char*>("__main__"));
86    if (module == NULL)
87        fatal("Could not import __main__");
88
89    dict = PyModule_GetDict(module);
90
91    result = PyRun_String("import m5.main", Py_file_input, dict, dict);
92    if (!result) {
93        PyErr_Print();
94        return 1;
95    }
96    Py_DECREF(result);
97
98    result = PyRun_String("m5.main.main()", Py_file_input, dict, dict);
99    if (!result) {
100        PyErr_Print();
101        return 1;
102    }
103    Py_DECREF(result);
104
105    if (Py_FlushLine())
106        PyErr_Clear();
107
108    return 0;
109}
110
111int
112main(int argc, char **argv)
113{
114    signal(SIGFPE, SIG_IGN);		// may occur on misspeculated paths
115    signal(SIGTRAP, SIG_IGN);
116    signal(SIGUSR1, dumpStatsHandler);		// dump intermediate stats
117    signal(SIGUSR2, dumprstStatsHandler);	// dump and reset stats
118    signal(SIGINT, exitNowHandler);		// dump final stats and exit
119    signal(SIGABRT, abortHandler);
120
121    Py_SetProgramName(argv[0]);
122
123    // default path to m5 python code is the currently executing
124    // file... Python ZipImporter will find embedded zip archive.
125    // The M5_ARCHIVE environment variable can be used to override this.
126    char *m5_archive = getenv("M5_ARCHIVE");
127    string pythonpath = m5_archive ? m5_archive : argv[0];
128
129    char *oldpath = getenv("PYTHONPATH");
130    if (oldpath != NULL) {
131        pythonpath += ":";
132        pythonpath += oldpath;
133    }
134
135    if (setenv("PYTHONPATH", pythonpath.c_str(), true) == -1)
136        fatal("setenv: %s\n", strerror(errno));
137
138    const char *python_home = getenv("PYTHONHOME");
139    if (!python_home)
140        python_home = PYTHONHOME;
141    Py_SetPythonHome(const_cast<char*>(python_home));
142
143    // initialize embedded Python interpreter
144    Py_Initialize();
145    PySys_SetArgv(argc, argv);
146
147    // initialize SWIG modules
148    init_swig();
149
150    int ret = python_main();
151
152    // clean up Python intepreter.
153    Py_Finalize();
154
155    return ret;
156}
157