How do I make/use my own run-time library?

[%u]

Hi,

I've been trying to make my own run-time library for D, but I've come across a
dead end: *any* library I make will inherently depend on SNN.lib, and there
are no headers for that C run-time library.

How can I write my own library in place of SNN.lib if I do not know what the
function specifications are? (My entire goal here is to write my own
counterpart of SNN.lib, so I can't really avoid the issue.)

Thank you!