i386_set_ioperm(2)/i386_get_ioperm(2) replacement after switch
from x86 to amd64
kostikbel at gmail.com
Tue Dec 1 15:51:13 UTC 2009
On Tue, Dec 01, 2009 at 04:21:39PM +0100, Alexander Best wrote:
> i'm getting this during compilation/linking:
> undefined reference to `i386_set_ioperm'
Libc wrappers for these syscalls are not provided by amd64 libc.
Use sysarch(2) to execute them.
> do i need to link against some x86 compat lib?
You cannot link 32bit library to amd64 binary.
> ps: also the ioperm manuals are not getting installed on amd64 it seems.
> Kostik Belousov schrieb am 2009-12-01:
> > On Tue, Dec 01, 2009 at 02:22:23PM +0100, Alexander Best wrote:
> > > hi there,
> > > i recently switch from x86 to amd64. right now i'm looking for a
> > > way to
> > > replace i386_set_ioperm(2) and i386_get_ioperm(2) (which are x86
> > > specific).
> > > any suggestions?
> > > * full /dev/io access is rather nasty
> > > * the app i'm developing is using inb/outb opcodes through inline
> > > assembly in
> > > order to access the parallel port. i tried using ppi(4), but that
> > > slows down
> > > things dramatically (see:
> > > http://lists.freebsd.org/pipermail/freebsd-hackers/2009-July/029188.html)
> > FreeBSD 8.0 supports these syscalls on amd64.
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