Well it's not to complicated really. Just as you've stated it compiles to a subset of native asm. There's also a binary encoding, but that's basically dictionar

Well it's not to complicated really. Just as you've stated it compiles to a subset of native asm. There's also a binary encoding, but that's basically dictionary compression of the source code with a fixed dictionary. I'm not sure what you mean with execute wasm code inside of wasm code? But I'll attempt to answer the question from my understanding of it. Webassembly is a subset of javascript, where the parts that cannot easily be optimized. Due to this support for eval is not included. So no it's not possible.