https://github.com/pacak/cargo-show-asm is a nice helper for the Rust->asm part of this that has seen a decent amount of work for handling all the edge cases. (I've contributed a bit to it to handle some Windows issues.)

That's interesting. There is also https://codeberg.org/Jorenar/nvim-dap-disasm if you want to get it for actual compiled result + debugger.