__init__.py revision 2667 
1# Copyright (c) 2005 The Regents of The University of Michigan
2# All rights reserved.
3#
4# Redistribution and use in source and binary forms, with or without
5# modification, are permitted provided that the following conditions are
6# met: redistributions of source code must retain the above copyright
7# notice, this list of conditions and the following disclaimer;
8# redistributions in binary form must reproduce the above copyright
9# notice, this list of conditions and the following disclaimer in the
10# documentation and/or other materials provided with the distribution;
11# neither the name of the copyright holders nor the names of its
12# contributors may be used to endorse or promote products derived from
13# this software without specific prior written permission.
14#
15# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
16# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
17# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
18# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
19# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
20# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
21# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
25# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26#
27# Authors: Nathan Binkert
28#          Steve Reinhardt
29
30import sys, os, time, atexit, optparse
31
32# import the SWIG-wrapped main C++ functions
33import main
34# import a few SWIG-wrapped items (those that are likely to be used
35# directly by user scripts) completely into this module for
36# convenience
37from main import simulate, SimLoopExitEvent
38
39# import the m5 compile options
40import defines
41
42# define this here so we can use it right away if necessary
43def panic(string):
44    print >>sys.stderr, 'panic:', string
45    sys.exit(1)
46
47# Prepend given directory to system module search path.  We may not
48# need this anymore if we can structure our config library more like a
49# Python package.
50def AddToPath(path):
51    # if it's a relative path and we know what directory the current
52    # python script is in, make the path relative to that directory.
53    if not os.path.isabs(path) and sys.path[0]:
54        path = os.path.join(sys.path[0], path)
55    path = os.path.realpath(path)
56    # sys.path[0] should always refer to the current script's directory,
57    # so place the new dir right after that.
58    sys.path.insert(1, path)
59
60
61# Callback to set trace flags.  Not necessarily the best way to do
62# things in the long run (particularly if we change how these global
63# options are handled).
64def setTraceFlags(option, opt_str, value, parser):
65    objects.Trace.flags = value
66
67# Standard optparse options.  Need to be explicitly included by the
68# user script when it calls optparse.OptionParser().
69standardOptions = [
70    optparse.make_option("--traceflags", type="string", action="callback",
71                         callback=setTraceFlags)
72    ]
73
74# make a SmartDict out of the build options for our local use
75import smartdict
76build_env = smartdict.SmartDict()
77build_env.update(defines.m5_build_env)
78
79# make a SmartDict out of the OS environment too
80env = smartdict.SmartDict()
81env.update(os.environ)
82
83# The final hook to generate .ini files.  Called from the user script
84# once the config is built.
85def instantiate(root):
86    config.ticks_per_sec = float(root.clock.frequency)
87    # ugly temporary hack to get output to config.ini
88    sys.stdout = file('config.ini', 'w')
89    root.print_ini()
90    sys.stdout.close() # close config.ini
91    sys.stdout = sys.__stdout__ # restore to original
92    main.initialize()  # load config.ini into C++ and process it
93    noDot = True # temporary until we fix dot
94    if not noDot:
95       dot = pydot.Dot()
96       instance.outputDot(dot)
97       dot.orientation = "portrait"
98       dot.size = "8.5,11"
99       dot.ranksep="equally"
100       dot.rank="samerank"
101       dot.write("config.dot")
102       dot.write_ps("config.ps")
103
104# Export curTick to user script.
105def curTick():
106    return main.cvar.curTick
107
108# register our C++ exit callback function with Python
109atexit.register(main.doExitCleanup)
110
111# This import allows user scripts to reference 'm5.objects.Foo' after
112# just doing an 'import m5' (without an 'import m5.objects').  May not
113# matter since most scripts will probably 'from m5.objects import *'.
114import objects
115