Probably not yet. But I am sure that they are looking at this option that was used by JRuby+Truffle: <a href="http:&#x2F;&#x2F;chrisseaton.com&#x2F;rubytruffle&#x2F;cext&#x2F;" rel="nofollow">http:&#x2F;&#x2F;chrisseaton.com&#x2F;rubytruffle&#x2F;cext&#x2F;</a>.
Where they use the same technique but then on C.
Although I heard that they will replace that approach with one where they directly work on LLVM IR instead. So that they can get all the LLVM supported languages in one go.