This omits a bunch of ABI differences. There's a reasonable amount of differences in e.g. the calling convention between Apple and AAPCS (ARM's standard): https

This omits a bunch of ABI differences. There's a reasonable amount of differences in e.g. the calling convention between Apple and AAPCS (ARM's standard): https://developer.apple.com/documentation/xcode/writing-arm64-code-for-apple-platforms https://developer.apple.com/documentation/xcode/writing-arm6...