/* $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