Re: [PATCH v3 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 Mon Mar 17 23:52:33 2025 +0000, Brendan Shanks wrote:
> I'm finally getting back to this...do you mean something like replacing
> `movq %gs:0x330,%r11` before switching to the kernel stack with `movq
> 0xb8(%rcx),%rcx`, `movq 0x330(%rcx),%rcx` right before indexing into the
> syscall table?
> Overall seems like a good idea, having those where they are currently
> (right next to where they're used) would be clearer.

Yeah, I think so. FWIW, even with two MOVs, should be faster than one MOV from GS indirect.