[immibis]

So now you're talking about the ntdll.dll ABI instead of the kernel ABI. ntdll.dll is not the kernel.

[sedatk]

NTDLL is NT’s kernel ABI, not syscalls. Nothing on Windows uses syscalls to call the kernel.

NTDLL isn’t some higher level library. It’s just a series of entry points into NT kernel.

[dcrazy]

Yes, the fact that functions in NTDLL issue a syscall instruction is a platform-specific implementation detail.