Hey everyone,

I'm porting TiLP to NetBSD. I have a couple of slightly tricky 
questions:

* Given "from" and "num", two integers that describe a range of ports
  to open up for inb/outb access, does the following code set up the
  iomap correctly?

  for (i = 0; i < num; ++i)
       iomap[(from + num) / 32] |= 1 << (from + num) % 32;

  return (i386_set_ioperm(iomap) ? ERR_ROOT : 0);

* How come we don't have inb() and outb() in machine/cpufunc.h?

* Are the following definitions of inb() and outb() from FreeBSD 5.2
  appropriate?

static __inline u_char
inb(u_int port)
{
        u_char  data;
        __asm __volatile("inb %%dx,%0" : "=a" (data) : "d" (port));
        return (data);
}
 
static __inline void
outb(u_int port, u_char data)
{
        u_char  al;
        al = data; 
        __asm __volatile("outb %0,%%dx" : : "a" (al), "d" (port));
}

-- 
Bruce J.A. Nourish <bjan@bjan.freeshell.org> http://bjan.freeshell.org
SDF Public Access UNIX System - http://sdf.lonestar.org