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 import sys, os
  28
  29 # define this here so we can use it right away if necessary
  30 def panic(string):
  31     print >>sys.stderr, 'panic:', string
  32     sys.exit(1)
  33
  34 def m5execfile(f, global_dict):
  35     # copy current sys.path
  36     oldpath = sys.path[:]
  37     # push file's directory onto front of path
  38     sys.path.insert(0, os.path.abspath(os.path.dirname(f)))
  39     execfile(f, global_dict)
  40     # restore original path
  41     sys.path = oldpath
  42
  43 # Prepend given directory to system module search path.
  44 def AddToPath(path):
  45     # if it's a relative path and we know what directory the current
  46     # python script is in, make the path relative to that directory.
  47     if not os.path.isabs(path) and sys.path[0]:
  48         path = os.path.join(sys.path[0], path)
  49     path = os.path.realpath(path)
  50     # sys.path[0] should always refer to the current script's directory,
  51     # so place the new dir right after that.
  52     sys.path.insert(1, path)
  53
  54 # find the m5 compile options: must be specified as a dict in
  55 # __main__.m5_build_env.
  56 import __main__
  57 if not hasattr(__main__, 'm5_build_env'):
  58     panic("__main__ must define m5_build_env")
  59
  60 # make a SmartDict out of the build options for our local use
  61 import smartdict
  62 build_env = smartdict.SmartDict()
  63 build_env.update(__main__.m5_build_env)
  64
  65 # make a SmartDict out of the OS environment too
  66 env = smartdict.SmartDict()
  67 env.update(os.environ)
  68
  69 # import the main m5 config code
  70 from config import *
  71
  72 # import the built-in object definitions
  73 from objects import *
  74