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Thanks for the reply. Actually, I ended up finding the answer to my question (“why doesn’t every assembly tutorial cover calling conventions on like, page 2?”)

Thanks for the reply. Actually, I ended up finding the answer to my question (“why doesn’t every assembly tutorial cover calling conventions on like, page 2?”), and it was because I was coming at this topic from a C perspective. https://stackoverflow.com/a/17309038 https://stackoverflow.com/a/17309038 “ If you're writing in assembly language, you can do whatever you want. It's only when you want to interact with some external code (maybe a library, maybe a system call) that you need to obey the calling convention.”

CoastalCoder 2y ago
Personally, I found that approach to learning assembly somewhat difficult. If you're first learning assembly in some little simulator, or on bare metal, I can see the point in deferring any discussion about the ABI until later. My first assembly project needed to be invoked as a function call from a C/C++ program. So I'd have really benefited from at least a brief explanation about the boilerplate asm you need to be a callable function, how to make function calls / syscalls to print some output, etc.