alt Hacker NewsThe Linux kernel API is the same everywhere, but the syscall ABI (numbers, calling convention, entry paths) is specific to a architecture, while it's the C library that wraps those details into the portable POSIX API we code against
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tomtomtom777 • today at 1:02 PM
I see, but why were they numbered differently? Why not use the same numbers?
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Also newer archs (riscv) don't support certain syscalls (open, fork) they are still functions you can call under your standard musl,glibc but they inernally call openat, clone.