wasmtime-unwinder

This crate implements an unwind info format, stack walking, and unwinding for Wasmtime. It includes logic that:

• Can walk the Wasmstack and visit each frame;
• Can find exception handlers using an efficient format serialized from Cranelift compilation metadata that can be mapped and used in-place from disk;
• Provides a "throw" helper that, when called from host code that has been invoked from Wasmcode, can find a handler; and a "resume" stub that can be invoked to transfer control to the corresponding handler.