Move SimObject creation and Port connection loops

into Python.
Add Port and VectorPort objects and support for
specifying port connections via assignment.
The whole C++ ConfigNode hierarchy is gone now, as are
C++ Connector objects.

configs/test/fs.py:
configs/test/test.py:
    Rewrite for new port connector syntax.
src/SConscript:
    Remove unneeded files:
    - mem/connector.*
    - sim/config*
src/dev/io_device.hh:
src/mem/bridge.cc:
src/mem/bridge.hh:
src/mem/bus.cc:
src/mem/bus.hh:
src/mem/mem_object.hh:
src/mem/physical.cc:
src/mem/physical.hh:
    Allow getPort() to take an optional index to
    support vector ports (eventually).
src/python/m5/__init__.py:
    Move SimObject construction and port connection
    operations into Python (with C++ calls).
src/python/m5/config.py:
    Move SimObject construction and port connection
    operations into Python (with C++ calls).
    Add support for declaring and connecting MemObject
    ports in Python.
src/python/m5/objects/Bus.py:
src/python/m5/objects/PhysicalMemory.py:
    Add port declaration.
src/sim/builder.cc:
src/sim/builder.hh:
src/sim/serialize.cc:
src/sim/serialize.hh:
    ConfigNodes are gone; builder just gets the
    name of a .ini file section now.
src/sim/main.cc:
    Move SimObject construction and port connection
    operations into Python (with C++ calls).
    Split remaining initialization operations into two parts,
    loadIniFile() and finalInit().
src/sim/param.cc:
src/sim/param.hh:
    SimObject resolution done globally in Python now
    (not via ConfigNode hierarchy).
src/sim/sim_object.cc:
    Remove unneeded #include.

--HG--
extra : convert_revision : 2fa4001eaaec0c9a4231ef6e854f8e156d930dfe

src/python/m5/__init__.py

@@ -80,6 +80,16 @@ build_env.update(defines.m5_build_env)
 env = smartdict.SmartDict()
 env.update(os.environ)
 
+
+# Function to provide to C++ so it can look up instances based on paths
+def resolveSimObject(name):
+    obj = config.instanceDict[name]
+    if not obj._ccObject:
+        obj.createCCObject()
+    if obj._ccObject == -1:
+        panic("resolveSimObject: recursive lookup error on %s" % name)
+    return obj._ccObject
+
 # The final hook to generate .ini files.  Called from the user script
 # once the config is built.
 def instantiate(root):
@@ -89,7 +99,10 @@ def instantiate(root):
     root.print_ini()
     sys.stdout.close() # close config.ini
     sys.stdout = sys.__stdout__ # restore to original
-    main.initialize()  # load config.ini into C++ and process it
+    main.loadIniFile(resolveSimObject)  # load config.ini into C++
+    root.createCCObject()
+    root.connectPorts()
+    main.finalInit()
     noDot = True # temporary until we fix dot
     if not noDot:
        dot = pydot.Dot()