1/* $NetBSD: SYS.h,v 1.4 2023/07/23 07:25:04 skrll Exp $ */
2
3/*-
4 * Copyright (c) 2014 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Matt Thomas of 3am Software Foundry.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32#include <machine/asm.h>
33#include <sys/syscall.h>
34
35#ifndef __STDC__
36#error __STDC__ not defined
37#endif
38
39#define SYSTRAP(x)	svc #(SYS_ ## x)
40
41#define _SYSCALL_NOERROR(x,y)						\
42ENTRY(x);								\
43	SYSTRAP(y)
44
45#define _INVOKE_CERROR()						\
46	b.cc	1f;							\
47	b	_C_LABEL(__cerror);					\
481:
49
50#define _SYSCALL(x, y)							\
51	_SYSCALL_NOERROR(x,y);						\
52	_INVOKE_CERROR()
53
54#define SYSCALL_NOERROR(x)						\
55	_SYSCALL_NOERROR(x,x)
56
57#define SYSCALL(x)							\
58	_SYSCALL(x,x)
59
60#define PSEUDO_NOERROR(x,y)						\
61	_SYSCALL_NOERROR(x,y);						\
62	ret;								\
63END(x)
64
65#define PSEUDO(x,y)							\
66	_SYSCALL(x,y);							\
67	ret;								\
68END(x)
69
70#define RSYSCALL_NOERROR(x)						\
71	PSEUDO_NOERROR(x,x)
72
73#define RSYSCALL(x)							\
74	PSEUDO(x,x)
75
76#define	WSYSCALL(weak,strong)						\
77	WEAK_ALIAS(weak,strong);					\
78	PSEUDO(strong,weak)
79
80	.hidden	__cerror
81	.globl	__cerror
82