Inline assembly in Linux
I'm trying to add call/cc to node, or to lua.Recap: call/cc is the ability to save the current state of a running thread, then revert to that state at a later point in time.  In other words, at any point in your program, you can say "Save the current stack."  It's saved as a function.  Later, whenever you call that function, the current stack is thrown out, and replaced with the saved stack.This is very useful for a number of reasons.  It's also a very rare feature to have in your language.Neither node nor lua has support for this.  The closest I've found is a Lua extension which adds coroutine.clone().  In principle, this is the solution.  In practice, it has a number of limitations, such as restrictions on when you're allowed to call coroutine.clone().  (For example, if your stack looks like Lua -> C -> Lua, then it won't work.)I tried to channel my inner Mike Pall and solve this problem once and for all, but I'm not Mike Pall, and this is really hard.  I was hoping you might know of any possible solution which is (a) practical, (b) cross-platform, and (c) works in all cases.Why post this here?  Because this post happens to attract exactly the kind of people that might know a way forward.  There must be a way.  Apologies for the off-topic comment.