freebsd-src/sys/i386/ibcs2/ibcs2_isc.c
1995-12-07 12:48:31 +00:00

65 lines
2.4 KiB
C

/*-
* Copyright (c) 1994 Søren Schmidt
* Copyright (c) 1994 Sean Eric Fagan
* Copyright (c) 1995 Steven Wallace
* 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
* in this position and unchanged.
* 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. The name of the author may not be used to endorse or promote products
* derived from this software withough specific prior written permission
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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: ibcs2_isc.c,v 1.5 1995/10/10 07:58:52 swallace Exp $
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/sysent.h>
#include <sys/proc.h>
#include <machine/cpu.h>
#include <machine/psl.h>
#include <machine/reg.h>
#include <i386/ibcs2/ibcs2_types.h>
#include <i386/ibcs2/ibcs2_signal.h>
#include <i386/ibcs2/ibcs2_util.h>
#include <i386/ibcs2/ibcs2_proto.h>
#include <i386/ibcs2/ibcs2_isc_syscall.h>
extern struct sysent isc_sysent[];
int
ibcs2_isc(struct proc *p, struct ibcs2_isc_args *uap, int *retval)
{
struct trapframe *tf = (struct trapframe *)p->p_md.md_regs;
struct sysent *callp;
u_int code;
code = (tf->tf_eax & 0xffffff00) >> 8;
callp = &isc_sysent[code];
if(code < IBCS2_ISC_MAXSYSCALL)
return((*callp->sy_call)(p, (void *)uap, retval));
else
return ENOSYS;
}