Comment by immibis

17 hours ago

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

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.

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