change to amd_*() functions

1 files changed, 85 insertions, 0 deletions

diff --git a/lib/libarch/amd64/amd64_iopl.2 b/lib/libarch/amd64/amd64_iopl.2
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+.\"	$OpenBSD: amd64_iopl.2,v 1.1 2004/02/27 23:44:56 deraadt Exp $
+.\"	$NetBSD: amd64_iopl.2,v 1.3 1996/02/27 22:57:25 jtc Exp $
+.\"
+.\" Copyright (c) 1996 The NetBSD Foundation, Inc.
+.\" All rights reserved.
+.\"
+.\" This code is derived from software contributed to The NetBSD Foundation
+.\" by John T. Kohl and Charles M. Hannum.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\"    must display the following acknowledgement:
+.\"	   This product includes software developed by the NetBSD
+.\"	   Foundation, Inc. and its contributors.
+.\" 4. Neither the name of The NetBSD Foundation nor the names of its
+.\"    contributors may be used to endorse or promote products derived
+.\"    from this software without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+.\" TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+.\" PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE
+.\" LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+.\" CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+.\" SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+.\" INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+.\" CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+.\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+.\" POSSIBILITY OF SUCH DAMAGE.
+.\"
+.Dd October 14, 1995
+.Dt AMD64_IOPL 2
+.Os
+.Sh NAME
+.Nm amd64_iopl
+.Nd change the amd64 I/O privilege level
+.Sh SYNOPSIS
+.Fd #include <sys/types.h>
+.Fd #include <machine/sysarch.h>
+.Ft int
+.Fn amd64_iopl "int iopl"
+.Sh DESCRIPTION
+.Fn amd64_iopl
+sets the amd64 I/O privilege level to the value specified by
+.Ar iopl .
+This call is restricted to the superuser.
+.Pp
+.Sy Note:
+Code using the
+.Fn amd64_iopl
+function must be compiled using
+.Cm -lamd64 .
+.Sh RETURN VALUES
+Upon successful completion,
+.Fn amd64_iopl
+returns 0.
+Otherwise, a value of \-1 is returned and the global
+variable
+.Va errno
+is set to indicate the error.
+.Sh ERRORS
+.Fn amd64_iopl
+will fail if:
+.Bl -tag -width [EINVAL]
+.It Bq Er EPERM
+The caller was not the superuser.
+.El
+.Sh SEE ALSO
+.Xr amd64_get_ioperm 2 ,
+.Xr amd64_set_ioperm 2
+.Sh REFERENCES
+.Rs
+.%A Intel
+.%T AMD64 Microprocessor Programmer's Reference Manual
+.Re
+.Sh WARNING
+You can really hose your machine if you enable user-level I/O and
+write to hardware ports without care.