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A comment on What happens before main() is executed in C and why is it important?. Parent comment

Re:What happens before main() is executed in C and why is it... by 2RTZZSro on Friday May 04, 2018 @02:14PM (#16996846)
What was the project for where you wrote code that self-detected its boot location?
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Re:What happens before main() is executed in C and why is it... by RealityVoid on Friday May 04, 2018 @03:03PM (#16997307)
Well, a bootloader and the self-detection was useful for the bootloader self-update. The update bootloader would be copied in a different section and on reset would start and copy itself over the original bootloader section.

I also wanted to maintain full functionality even at shifted location in case the self-copy process somehow failed. Never did fail, at least to my knowledge.

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