/* $NetBSD: SYS.h,v 1.8 2002/01/14 00:55:55 thorpej Exp $ */

/*
 * Copyright (c) 1994, 1995 Carnegie-Mellon University.
 * All rights reserved.
 *
 * Author: Chris G. Demetriou
 * 
 * Permission to use, copy, modify and distribute this software and
 * its documentation is hereby granted, provided that both the copyright
 * notice and this permission notice appear in all copies of the
 * software, derivative works or modified versions, and any portions
 * thereof, and that both notices appear in supporting documentation.
 * 
 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 
 * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND 
 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
 * 
 * Carnegie Mellon requests users of this software to return to
 *
 *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
 *  School of Computer Science
 *  Carnegie Mellon University
 *  Pittsburgh PA 15213-3890
 *
 * any improvements or extensions that they make and grant Carnegie the
 * rights to redistribute these changes.
 */

#include <machine/asm.h>
#include <sys/syscall.h>


#define CALLSYS_ERROR(name)                                     \
        CALLSYS_NOERROR(name);                                  \
        br      gp, LLABEL(name,0);                             \
LLABEL(name,0):                                                 \
        LDGP(gp);                                               \
        beq     a3, LLABEL(name,1);                             \
        jmp     zero, __cerror;                                 \
LLABEL(name,1):


#define SYSCALL(name)                                           \
LEAF(name,0);                           /* XXX # of args? */    \
        CALLSYS_ERROR(name)

#define SYSCALL_NOERROR(name)                                   \
LEAF(name,0);                           /* XXX # of args? */    \
        CALLSYS_NOERROR(name)

#define PSEUDO(label,name)                                      \
LEAF(label,0);                          /* XXX # of args? */    \
        CALLSYS_ERROR(name);                                    \
        RET;                                                    \
END(label);

#define PSEUDO_NOERROR(label,name)                              \
LEAF(label,0);                          /* XXX # of args? */    \
        CALLSYS_NOERROR(name);                                  \
        RET;                                                    \
END(label);

#define RSYSCALL(name)                                          \
        SYSCALL(name);                                          \
        RET;                                                    \
END(name)

#define RSYSCALL_NOERROR(name)                                  \
        SYSCALL_NOERROR(name);                                  \
        RET;                                                    \
END(name)

#define WSYSCALL(weak,strong)                                   \
        WEAK_ALIAS(weak,strong);                                \
        PSEUDO(strong,weak)