Very generally speaking, you want to view dissasembled sections.

You can do this at the function level.

In rust, try this: https://github.com/pacak/cargo-show-asm

However, life is much easier now, because an agent knows how to steer through this with you. Have it teach you at first, then you know how to ask.

This is one of those "back in my day we had to ... " stories, btw :D