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84
lib/libc/i386/sys/i386_get_ioperm.2 Normal file
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.\" Copyright (c) 1998 Jonathan Lemon
.\" 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.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
.\"
.\" $Id$
.\"
.Dd July 27, 1998
.Os
.Dt I386_GET_IOPERM 2
.Sh NAME
.Nm i386_get_ioperm ,
.Nm i386_set_ioperm
.Nd manage per-process access to the i386 I/O port space
.Sh SYNOPSIS
.Fd #include <machine/sysarch.h>
.Ft int
.Fn i386_get_ioperm "u_int start" "u_int *length" "int *enable"
.Ft int
.Fn i386_set_ioperm "u_int start" "u_int length" "int enable"
.Sh DESCRIPTION
.Fn i386_get_ioperm
will return the permission for the process' I/O port space in the
.Fa *enable
argument. The port range starts at
.Fa start
and the number of contiguous entries will be returned in
.Fa *length .
.Pp
.Fn i386_set_ioperm
will set access to a range of I/O ports described by the
.Fa start
and
.Fa length
arguments to the state specified by the
.Fa enable
argument.
.Sh RETURN VALUES
Upon successful completion,
.Fn i386_get_ioperm
and
.Fn i386_set_ioperm
return the value of 0.
Otherwise, a value of -1 is returned and the global
variable
.Va errno
is set to indicate the error.
.Sh ERRORS
.Fn i386_get_ioperm
and
.Fn i386_set_ioperm
will fail if:
.Bl -tag -width [EINVAL]
.It Bq Er EINVAL
An invalid range was specified by the
.Fa start
or
.Fa length
arguments.
.It Bq Er EPERM
The caller of i386_set_ioperm was not the superuser.
.El
.Sh AUTHORS
This man page was written by
.An Jonathan Lemon .

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lib/libc/i386/sys/i386_get_ioperm.c Normal file
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/*-
* Copyright (c) 1998 Jonathan Lemon
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
*
* $Id$
*/
#if defined(LIBC_RCS) && !defined(lint)
static const char rcsid[] = "$Id$";
#endif /* LIBC_RCS and not lint */
#include <sys/types.h>
#include <machine/sysarch.h>
struct parms {
u_int start;
u_int length;
int enable;
};
int
i386_get_ioperm(u_int start, u_int *length, int *enable)
{
struct parms p;
int error;
p.start = start;
p.length = *length;
p.enable = *enable;
error = sysarch(I386_GET_IOPERM, (char *)&p);
*length = p.length;
*enable = p.enable;
return (error);
}

52
lib/libc/i386/sys/i386_set_ioperm.c Normal file
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/*-
* Copyright (c) 1998 Jonathan Lemon
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
*
* $Id$
*/
#if defined(LIBC_RCS) && !defined(lint)
static const char rcsid[] = "$Id$";
#endif /* LIBC_RCS and not lint */
#include <sys/types.h>
#include <machine/sysarch.h>
struct parms {
u_int start;
u_int length;
int enable;
};
int
i386_set_ioperm(u_int start, u_int length, int enable)
{
struct parms p;
p.start = start;
p.length = length;
p.enable = enable;
return (sysarch(I386_SET_IOPERM, (char *)&p));
}

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lib/libc/i386/sys/i386_vm86.2 Normal file
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.\" Copyright (c) 1998 Jonathan Lemon
.\" 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.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
.\"
.\" $Id$
.\"
.Dd July 27, 1998
.Os
.Dt I386_VM86 2
.Sh NAME
.Nm i386_vm86
.Nd control vm86-related functions
.Sh SYNOPSIS
.Fd #include <machine/sysarch.h>
.Fd #include <machine/vm86.h>
.Ft int
.Fn i386_vm86 "int function" "void *data"
.Sh DESCRIPTION
.Fn i386_vm86
is used to call various vm86 related functions.
.Fa function
can be one of the following values:
.Bl -tag -offset indent -width VM86_SET_VME
.It Dv VM86_INIT
This will initialize the kernel's vm86 parameter area for the
process, and permit the process to make vm86 calls.
.Fa data
points to the following structure:
.Bd -literal
struct vm86_init_args {
int debug;
int cpu_type;
u_char int_map[32];
};
.Ed
.Pp
.Fa debug
is used to turn on debugging code.
.Fa cpu_type
controls the type of CPU being emulated, and is currently unimplemented.
.Fa int_map
is a bitmap which determines whether vm86 interrupts should be handled
in vm86 mode, or reflected back to the process. If the
.Em Nth
bit is set, the interrupt will be reflected to the process, otherwise
it will be dispatched by the vm86 interrupt table.
.\" .It Dv VM86_SET_VME
.\" .It Dv VM86_GET_VME
.\" .It Dv VM86_INTCALL
.El
.Pp
vm86 mode is entered by calling
.Xr sigreturn 2
with the correct machine context for vm86, and with the
.Em PSL_VM
bit set. Control returns to the process upon delivery of a signal.
.Sh RETURN VALUES
Upon successful completion,
.Fn i386_vm86
will return the value of 0.
Otherwise, a value of -1 is returned and the global
variable
.Va errno
is set to indicate the error.
.Sh ERRORS
.Fn i386_vm86
will fail if:
.Bl -tag -width [ENOMEM]
.It Bq Er EINVAL
The kernel does not have vm86 support, or an invalid function was specified.
.It Bq Er ENOMEM
There is not enough memory to initialize the kernel data structures.
.Sh AUTHORS
This man page was written by
.An Jonathan Lemon .

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lib/libc/i386/sys/i386_vm86.c Normal file
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/*-
* Copyright (c) 1998 Jonathan Lemon
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
*
* $Id$
*/
#if defined(LIBC_RCS) && !defined(lint)
static const char rcsid[] = "$Id$";
#endif /* LIBC_RCS and not lint */
#include <machine/sysarch.h>
struct parms {
int sub_op;
void *sub_args;
};
int
i386_vm86(int fcn, void *data)
{
struct parms p;
p.sub_op = fcn;
p.sub_args = data;
return (sysarch(I386_VM86, (void *)&p));
}

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.\" $NetBSD: sysarch.2,v 1.6 1998/02/25 21:24:57 perry Exp $
.\" $Id$
.\"
.\" 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. 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.
.\"
.\" from: @(#)syscall.2 6.3 (Berkeley) 3/10/91
.\"
.Dd October 11, 1993
.Dt SYSARCH 2
.Os
.Sh NAME
.Nm sysarch
.Nd architecture-dependent system call
.Sh SYNOPSIS
.Fd #include <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
.Ao Pa machine/sysarch.h Ac .
.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.
.Pp
.Sh RETURN VALUES
See the manual pages for specific architecture-dependent function calls
for information about their return values.
.Sh SEE ALSO
.Xr i386_get_ioperm 2 ,
.Xr i386_get_ldt 2 ,
.Xr i386_vm86 2
.Sh HISTORY
This manual page was taken from
.Nx .