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-.\" Copyright (c) 1980, 1991, 1993
-.\" The 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. All advertising materials mentioning features or use of this software
-.\" must display the following acknowledgement:
-.\" This product includes software developed by the University of
-.\" California, Berkeley and its contributors.
-.\" 4. 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.
-.\"
-.\" @(#)syscall.2 8.1 (Berkeley) 6/16/93
-.\"
-.Dd June 16, 1993
-.Dt SYSCALL 2
-.Os BSD 4
-.Sh NAME
-.Nm syscall ,
-.Nm __syscall
-.Nd indirect system call
-.Sh SYNOPSIS
-.Fd #include <sys/syscall.h>
-.Fd #include <unistd.h>
-.Ft int
-.Fn syscall "int number" ...
-.Ft off_t
-.Fn __syscall "quad_t number" ...
-.Sh DESCRIPTION
-.Fn Syscall
-performs the system call whose assembly language
-interface has the specified
-.Fa number
-with the specified arguments.
-Symbolic constants for system calls can be found in the header file
-.Ao Pa sys/syscall.h Ac .
-The
-.Fn __syscall
-form should be used when one or more of the parameters is a
-64-bit argument to ensure that argument alignment is correct.
-This system call is useful for testing new system calls that
-do not have entries in the C library.
-.Sh RETURN VALUES
-The return values are defined by the system call being invoked.
-In general, a 0 return value indicates success.
-A -1 return value indicates an error,
-and an error code is stored in
-.Va errno .
-.Sh BUGS
-There is no way to simulate system calls that have multiple return values
-such as
-.Xr pipe 2 .
-.Sh HISTORY
-The
-.Fn syscall
-function call appeared in
-.Bx 4.0 .
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