Link in Python interpreter.

Use embedded zip archive to carry Python code instead
of homegrown embedded string/file mechanism.
Do argument parsing in Python instead of C++.

SConstruct:
    Add Python interpreter include path & library.
    Define two new simple builders which copy &
    concatenate files, respectively, for use by
    the Python embedded zipfile code.
src/SConscript:
    Encapsulate environment creation in a function.
    Add code to append Python zip archive to final executable.
    Eliminate references to obsolete files.
src/python/SConscript:
    Rewrite to generate embedded zip archive of Python code
    (replacing old "embedded string" mechanism).
src/python/m5/__init__.py:
    Move main arg-parsing loop here (out of C++ main()).
src/python/m5/config.py:
    Minor fix (version incompatibility?).
src/sim/main.cc:
    Invoke embedded Python interpreter to parse args
    and generate config.ini, replacing C++ arg parsing code.

--HG--
extra : convert_revision : 72d21236b2bee139ff39ba4cf031a4a1f8560029

src/python/m5/__init__.py

@@ -24,7 +24,53 @@
 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-import sys, os
+import sys, os, time
+
+import __main__
+
+briefCopyright = '''
+Copyright (c) 2001-2006
+The Regents of The University of Michigan
+All Rights Reserved
+'''
+
+fullCopyright = '''
+Copyright (c) 2001-2006
+The Regents of The University of Michigan
+All Rights Reserved
+
+Permission is granted to use, copy, create derivative works and
+redistribute this software and such derivative works for any purpose,
+so long as the copyright notice above, this grant of permission, and
+the disclaimer below appear in all copies made; and so long as the
+name of The University of Michigan is not used in any advertising or
+publicity pertaining to the use or distribution of this software
+without specific, written prior authorization.
+
+THIS SOFTWARE IS PROVIDED AS IS, WITHOUT REPRESENTATION FROM THE
+UNIVERSITY OF MICHIGAN AS TO ITS FITNESS FOR ANY PURPOSE, AND WITHOUT
+WARRANTY BY THE UNIVERSITY OF MICHIGAN OF ANY KIND, EITHER EXPRESS OR
+IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE REGENTS OF
+THE UNIVERSITY OF MICHIGAN SHALL NOT BE LIABLE FOR ANY DAMAGES,
+INCLUDING DIRECT, SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL
+DAMAGES, WITH RESPECT TO ANY CLAIM ARISING OUT OF OR IN CONNECTION
+WITH THE USE OF THE SOFTWARE, EVEN IF IT HAS BEEN OR IS HEREAFTER
+ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
+'''
+
+def sayHello(f):
+    print >> f, "M5 Simulator System"
+    print >> f, briefCopyright
+    print >> f, "M5 compiled on", __main__.compileDate
+    hostname = os.environ.get('HOSTNAME')
+    if not hostname:
+        hostname = os.environ.get('HOST')
+    if hostname:
+        print >> f, "M5 executing on", hostname
+    print >> f, "M5 simulation started", time.ctime()
+
+sayHello(sys.stderr)
 
 # define this here so we can use it right away if necessary
 def panic(string):
@@ -72,3 +118,63 @@ from config import *
 # import the built-in object definitions
 from objects import *
 
+
+args_left = sys.argv[1:]
+configfile_found = False
+
+while args_left:
+    arg = args_left.pop(0)
+    if arg.startswith('--'):
+        # if arg starts with '--', parse as a special python option
+        # of the format --<python var>=<string value>
+        try:
+            (var, val) = arg.split('=', 1)
+        except ValueError:
+            panic("Could not parse configuration argument '%s'\n"
+                  "Expecting --<variable>=<value>\n" % arg);
+        eval("%s = %s" % (var, repr(val)))
+    elif arg.startswith('-'):
+        # if the arg starts with '-', it should be a simulator option
+        # with a format similar to getopt.
+        optchar = arg[1]
+        if len(arg) > 2:
+            args_left.insert(0, arg[2:])
+        if optchar == 'd':
+            outdir = args_left.pop(0)
+        elif optchar == 'h':
+            showBriefHelp(sys.stderr)
+            sys.exit(1)
+        elif optchar == 'E':
+            env_str = args_left.pop(0)
+            split_result = env_str.split('=', 1)
+            var = split_result[0]
+            if len(split_result == 2):
+                val = split_result[1]
+            else:
+                val = True
+            env[var] = val
+        elif optchar == 'I':
+            AddToPath(args_left.pop(0))
+        elif optchar == 'P':
+            eval(args_left.pop(0))
+        else:
+            showBriefHelp(sys.stderr)
+            panic("invalid argument '%s'\n" % arg_str)
+    else:
+        # In any other case, treat the option as a configuration file
+        # name and load it.
+        if not arg.endswith('.py'):
+            panic("Config file '%s' must end in '.py'\n" % arg)
+        configfile_found = True
+        m5execfile(arg, globals())
+
+
+if not configfile_found:
+    panic("no configuration file specified!")
+
+if globals().has_key('root') and isinstance(root, Root):
+    sys.stdout = file('config.ini', 'w')
+    instantiate(root)
+else:
+    print 'Instantiation skipped: no root object found.'
+

src/python/m5/config.py

@@ -794,7 +794,7 @@ class ParamFactory(object):
 
     # E.g., Param.Int(5, "number of widgets")
     def __call__(self, *args, **kwargs):
-        caller_frame = inspect.stack()[1][0]
+        caller_frame = inspect.currentframe().f_back
         ptype = None
         try:
             ptype = eval(self.ptype_str,