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Converting x86 binaries to arm binaries in place
(arxiv.org)
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What's the point of this when you can compile between ISAs using a build tool and source? When would you need to cross compile a binary after building?
Because you don't have the source or because you can't configure the cross-compiler
I guess I'm confused about the context you'd be in that situation.
Easy to explain: The idiot project manager skipped to set up source control, and the sources have been lost.
E.g. when you have a proprietary program that is only available on x86, but you want to run it on ARM.