PlatformConfig.py revision 11238:627dd43a5846 
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36# Authors: Andreas Sandberg
37
38import m5.objects
39import inspect
40import sys
41from textwrap import TextWrapper
42
43# Dictionary of mapping names of real CPU models to classes.
44_platform_classes = {}
45
46# Platform aliases. The platforms listed here might not be compiled,
47# we make sure they exist before we add them to the platform list.
48_platform_aliases_all = [
49    ("RealView_EB", "RealViewEB"),
50    ("RealView_PBX", "RealViewPBX"),
51    ]
52
53# Filtered list of aliases. Only aliases for existing platforms exist
54# in this list.
55_platform_aliases = {}
56
57def is_platform_class(cls):
58    """Determine if a class is a Platform that can be instantiated"""
59
60    # We can't use the normal inspect.isclass because the ParamFactory
61    # and ProxyFactory classes have a tendency to confuse it.
62    try:
63        return issubclass(cls, m5.objects.Platform) and \
64            not cls.abstract
65    except TypeError:
66        return False
67
68def get(name):
69    """Get a platform class from a user provided class name."""
70
71    real_name = _platform_aliases.get(name, name)
72
73    try:
74        return _platform_classes[real_name]
75    except KeyError:
76        print "%s is not a valid Platform model." % (name,)
77        sys.exit(1)
78
79def print_platform_list():
80    """Print a list of available Platform classes including their aliases."""
81
82    print "Available Platform classes:"
83    doc_wrapper = TextWrapper(initial_indent="\t\t", subsequent_indent="\t\t")
84    for name, cls in _platform_classes.items():
85        print "\t%s" % name
86
87        # Try to extract the class documentation from the class help
88        # string.
89        doc = inspect.getdoc(cls)
90        if doc:
91            for line in doc_wrapper.wrap(doc):
92                print line
93
94    if _platform_aliases:
95        print "\Platform aliases:"
96        for alias, target in _platform_aliases.items():
97            print "\t%s => %s" % (alias, target)
98
99def platform_names():
100    """Return a list of valid Platform names."""
101    return _platform_classes.keys() + _platform_aliases.keys()
102
103# Add all Platforms in the object hierarchy.
104for name, cls in inspect.getmembers(m5.objects, is_platform_class):
105    _platform_classes[name] = cls
106
107for alias, target in _platform_aliases_all:
108    if target in _platform_classes:
109        _platform_aliases[alias] = target
110