def guess_arch_from_filename(filename):
"""
Guesses the 'best' architecture for the given filename.
If the file is in the Linux HAL (e.g., 'arch/arm/init.c', then the
architecture is deduced from the filename
Defaults to 'vamos.default_architecture' (default: 'x86')
returns a tuple (arch, subarch) with the architecture identifier (as
in the subdirectory part) and the preferred "subarchitecture". The
latter is used e.g. to disable CONFIG_64BIT on 'make allnoconfig'
when compiling on a 64bit host (default behavior), unless
vamos.prefer_32bit is set to False.
"""
m = re.search("^arch/([^/]*)/", os.path.normpath(filename))
if m:
arch = m.group(1)
else:
arch = vamos.default_architecture
subarch = guess_subarch_from_arch(arch)
forced_64bit = False
forced_32bit = False
if arch == 'x86' and '.config' in filename:
c = Config(filename)
if c.valueOf('CONFIG_X86_64') == 'y' or c.valueOf(
'CONFIG_64BIT') == 'y':
subarch = 'x86_64'
logging.debug("Config %s forces subarch x86_64", filename)
forced_64bit = True
if c.valueOf('CONFIG_X86_64') == 'n' or c.valueOf('CONFIG_64BIT') == 'n' \
or c.valueOf('CONFIG_X86_32') == 'y':
subarch = 'i386'
logging.debug("Config %s forces subarch i386", filename)
forced_32bit = True
if forced_32bit and forced_64bit:
logging.error(
"%s is inconsistent: cannot enable 64bit and 32bit together (using %s)",
filename, subarch)
return (arch, subarch)
def test_addFeature(self):
confA = Config()
confA.addFeature("CONFIG_FOO","m")
self.assertEqual(confA.valueOf("CONFIG_FOO"),"m")
def test_valueOf(self):
confA = Config()
confA.readConfigFile(self.configA.name)
self.assertEqual(confA.valueOf("CONFIG_A"),"y")
def test_addFeature(self):
confA = Config()
confA.addFeature("CONFIG_FOO", "m")
self.assertEqual(confA.valueOf("CONFIG_FOO"), "m")
def test_valueOf(self):
confA = Config()
confA.readConfigFile(self.configA.name)
self.assertEqual(confA.valueOf("CONFIG_A"), "y")