FreeBSD/Linux Kernel Cross Reference
sys/i386/ibcs2/ibcs2_isc.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.
     *
     * $FreeBSD$
     */
    
    #include <sys/param.h>
    #include <sys/sysent.h>
    #include <sys/proc.h>
    
    #include <machine/cpu.h>
    
    #include <i386/ibcs2/ibcs2_types.h>
    #include <i386/ibcs2/ibcs2_signal.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)
    {
            struct trapframe *tf = 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));
            else
              return ENOSYS;
    }

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