Those are not actually the same. There are several differences, but the most obvious one is that the standard ABI on x86-64 Linux passes integer parameters in t

Those are not actually the same. There are several differences, but the most obvious one is that the standard ABI on x86-64 Linux passes integer parameters in the following order: rdi, rsi, rdx, rcx, r8, r9. I noticed this immediately the first time I tried reading some Windows disassembly, as “rdi rsi rdx” is very thoroughly burned into my brain...