Re: [PATCH v6 0/6] MR6866: ntdll: On macOS x86_64, swap GSBASE between the TEB and macOS TSD when entering/leaving PE code.

[Jinoh Kang (＠iamahuman)]

> checking at compile time against `sys/syscall.h` will be sufficient here I would guess.

It's not in `sys/syscall.h`. thread\_set\_tsd\_base() is a machdep syscall.

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https://gitlab.winehq.org/wine/wine/-/merge_requests/6866#note_99013