src/python/m5/__init__.py

   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
  30 import sys, os, time, atexit, optparse
  31
  32 # import the SWIG-wrapped main C++ functions
  33 import 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
  37 from main import simulate, SimLoopExitEvent
  38
  39 # import the m5 compile options
  40 import defines
  41
  42 # define this here so we can use it right away if necessary
  43 def 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.
  50 def 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).
  64 def 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().
  69 standardOptions = [
  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
  75 import smartdict
  76 build_env = smartdict.SmartDict()
  77 build_env.update(defines.m5_build_env)
  78
  79 # make a SmartDict out of the OS environment too
  80 env = smartdict.SmartDict()
  81 env.update(os.environ)
  82
  83 # The final hook to generate .ini files.  Called from the user script
  84 # once the config is built.
  85 def 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.
 105 def curTick():
 106     return main.cvar.curTick
 107
 108 # register our C++ exit callback function with Python
 109 atexit.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 *'.
 114 import objects