/* $NetBSD: SYS.h,v 1.4 2023/07/23 07:25:04 skrll Exp $ */

/*-
* Copyright (c) 2014 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Matt Thomas of 3am Software Foundry.
*
* 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
*/

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

#ifndef __STDC__
#error __STDC__ not defined
#endif

#define SYSTRAP(x)      svc #(SYS_ ## x)

#define _SYSCALL_NOERROR(x,y)                                           \
ENTRY(x);                                                               \
       SYSTRAP(y)

#define _INVOKE_CERROR()                                                \
       b.cc    1f;                                                     \
       b       _C_LABEL(__cerror);                                     \
1:

#define _SYSCALL(x, y)                                                  \
       _SYSCALL_NOERROR(x,y);                                          \
       _INVOKE_CERROR()

#define SYSCALL_NOERROR(x)                                              \
       _SYSCALL_NOERROR(x,x)

#define SYSCALL(x)                                                      \
       _SYSCALL(x,x)

#define PSEUDO_NOERROR(x,y)                                             \
       _SYSCALL_NOERROR(x,y);                                          \
       ret;                                                            \
END(x)

#define PSEUDO(x,y)                                                     \
       _SYSCALL(x,y);                                                  \
       ret;                                                            \
END(x)

#define RSYSCALL_NOERROR(x)                                             \
       PSEUDO_NOERROR(x,x)

#define RSYSCALL(x)                                                     \
       PSEUDO(x,x)

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

       .hidden __cerror
       .globl  __cerror

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