2021.01.26

https://docs.darlinghq.org/internals/basics/system-call-emulation.html

没有实现直接系统调用，原因：对用户安装复杂，苹果不提供支持直接系统调用

Emulating XNU system calls directly in Linux would have a few benefits, but isn't really workable. Unlike BSD kernels, Linux has no support for foreign system call emulation and having such an extensive and intrusive patchset merged into Linux would be too difficult. Requiring Darling's users to patch their kernels is out of question as well.

Note that Apple provides no support for making direct system calls (which is effectively very similar to distributing statically linked executables described in the article) and frequently changes the system call table, hence such software is bound to break over time.