5K subscribers • 1 video on Hallway
Intermediate. Assumes working knowledge.
5.9K views3 years ago1 recommendation
Systems programmingOperating systemsCompilers and interpreters
An explanation of the Executable and Linkable Format structure and how to parse it within a custom second-stage bootloader.
"Executable and Linkable Format", or ELF, is a format used by most Unix systems today for loading programs into memory. It turns out that there's a reason this format is useful, and it's useful for our project as well. Patreon BBC Micro level supporters: Yehuda T. Deutsch Code available on github: github.com/CompuSAR/control_cpu Support the project on Patreon: patreon.com/CompuSar Discord server invite: discord.gg/nNv53PWgBj Table of contents: Two stage boot - why? Second stage loader Generating the boot loader Second stage differences Custom load format ELF file structure Boot loader actual code Changing the OS codeWhat people say. Recommended as a helpful resource for understanding the ELF format and how linkers work.
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