Add .m5 configuration directory

src/python/SConscript

@@ -36,6 +36,7 @@ Source('swig/pyobject.cc')
 
 PySource('m5', 'm5/__init__.py')
 PySource('m5', 'm5/SimObject.py')
+PySource('m5', 'm5/config.py')
 PySource('m5', 'm5/convert.py')
 PySource('m5', 'm5/event.py')
 PySource('m5', 'm5/main.py')

src/python/m5/config.py

@@ -0,0 +1,42 @@
+# 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
+
+import os
+from os.path import isdir, isfile, join as joinpath
+
+homedir = os.environ['HOME']
+confdir = os.environ.get('M5_CONFIG', joinpath(homedir, '.m5'))
+def get(name):
+    if not isdir(confdir):
+        return None
+    conffile = joinpath(confdir, name)
+    if not isfile(conffile):
+        return None
+
+    return conffile
+

src/python/m5/main.py

@@ -33,6 +33,7 @@ import socket
 import sys
 
 from util import attrdict
+import config
 import defines
 from options import OptionParser
 import traceflags