I strongly encourage people interested in this topic to look at the piccolo VM that has been referenced in the post. It is a fascinating exploration of how a stackless VM can work in Rust. It uses "sequences" (think a bit like a future or promise) to express control flow that yields or calls into other VM methods. Particularly for a little while now it has the concept of an async_sequence [1] which allows one to abuse (?) async/await where it will create a shadow stack to make this code more readable.

I find all of this quite exciting because there are not that many stackless VMs out there that are readable and not a massive usability hazard if you do something wrong.

[1]: https://github.com/kyren/piccolo/blob/master/tests/async_seq...