Does FB support SysV ABI?

From: Daniel Cervus <DanieltheDeer_at_outlook.com>
Date: Mon, 20 Mar 2023 04:09:57 UTC
  Hello, everyone. I was writing an assembly language program and I encountered some problem. After some research, I found that FB doesn’t follow the System V ABI standard and seems the system won’t recognize ELFs branding as SVR4. Is there any way to run a program written in SysV ABI? If no, where can I find documentation of FreeBSD ABI?

Daniel