distutils doesn't support .asm files. This can be resolved by applying
the patch from `Python issue 7546`_.
+Status: Win64 received very basic testing and we applied a few essential
+fixes in cffi 0.7. Please report any other issue.
.. _`issue 9`: https://bitbucket.org/cffi/cffi/issue/9
.. _`Python issue 7546`: http://bugs.python.org/issue7546