/* $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  [email protected]
*  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)

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