title: how can I call a system call in freebsd?
body: <p>I created a syscall same as /usr/share/examples/kld/syscall/module/syscall.c with a little change in message.
  I used kldload and module loaded. now I want to call the syscall.
  what is this syscall number so I can call it?
  or what is the way to call this syscall?</p>