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)]

On Wed Mar 19 22:07:13 2025 +0000, Brendan Shanks wrote:
> We could, but there's no guarantee of stability for the syscall number.
> The syscall number hasn't changed since introduction (in 2016's 10.12)
> though, so it's probably safe to depend on.

We can probably check that the `_thread_set_tsd_base` machine code matches the expected byte sequence. We can either dynamically extract the syscall number, or hard-code it and check against the system value.