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+.\" $OpenBSD: sysarch.2,v 1.11 2015/09/10 17:55:21 schwarze Exp $
+.\" $NetBSD: sysarch.2,v 1.4 1995/02/27 12:38:47 cgd Exp $
+.\"
+.\" Copyright (c) 1980, 1991 Regents of the University of California.
+.\" All rights reserved.
+.\"
+.\" 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. Neither the name of the University 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 REGENTS 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.
+.\"
+.\" from: @(#)syscall.2 6.3 (Berkeley) 3/10/91
+.\"
+.Dd $Mdocdate: September 10 2015 $
+.Dt SYSARCH 2
+.Os
+.Sh NAME
+.Nm sysarch
+.Nd architecture-dependent system call
+.Sh SYNOPSIS
+.In machine/sysarch.h
+.Ft int
+.Fn sysarch "int number" "void *args"
+.Sh DESCRIPTION
+.Fn sysarch
+performs the architecture-dependent function specified by
+.Fa number
+with the arguments specified by the
+.Fa args
+pointer.
+.Fa args
+is a pointer to a structure defining the actual arguments of the function.
+Symbolic constants and argument structures for the architecture-dependent
+functions can be found in the header file
+.In machine/sysarch.h .
+.Pp
+The
+.Fn sysarch
+system call should never be called directly by user programs.
+Instead, they should access its functions using the architecture-dependent
+library.
+.Sh RETURN VALUES
+See the manual pages for specific architecture-dependent function calls
+for information about their return values.
+.Sh HISTORY
+The
+.Fn sysarch
+function call appeared in
+.Nx 0.9a .