Passive ARM Assembly Skills for Debugging, Optimization (and Hacking)

Reading assembly code is an important skill for debugging and optimization. Is there a bug in a 3rd party framework that you don’t have the source code for? Are you calling into a system framework and it does not behave the way you expect? Do you want to understand the code the compiler generates, depending on the optimization level you choose? I have done all of these things more often than I would have liked in the past and I had acquired a solid understanding of x86 assembler code over the years. All was well until, suddenly, I had an ARM machine on my desk. If you are, like me, using ARM machines a lot and always wanted a gentle introduction to ARM assembler code, this is the talk for you.