Pawel Moll: How do debuggers (really) work ENG / #LinuxPiter

Pawel Moll / United Kingdom. Cambridge / Principal Engineer / ARM I've worked with so called “embedded Linux“ for more then ten years now, currently for ARM in Cambridge, UK as a Principal Engineer, with main focus on Linux developer tools, in all possible form and shape. My recent interest include performance analysis and optimisation. Every now and then I also act as a trainer on ARM software courses, write developer articles and give technical talks. How do debuggers (really) work Have you ever wondered what REALLY happens when you set a breakpoint in Your Favourite Debugger? Or why sometimes a function is missing from a call stack? If so, you will enjoy this Debugger Extravaganza! This presentation will analyse how does gdb control another process, what happens when a breakpoint is hit and how does it hit in the first place. Why does a conditional breakpoint slow down the process so much? And what is is about the remote session and kgdb