FreeBSD AMD64 kernel calling convention

From: Daniel Cervus <DanieltheDeer_at_outlook.com>
Date: Thu, 19 Jan 2023 04:08:00 UTC
  Hi, everyone. I’m learning AMD64 assembly language. But seems I cannot find much information about FreeBSD kernel interface, does it follows the same calling convention as described in System V AMD64 ABI? Or it is like Linux kernel calling convention, uses R10 instead of RCX to pass parameters?

Daniel