1/*	$OpenBSD: SYS.h,v 1.20 2023/12/10 16:45:51 deraadt Exp $	*/
2/*	$NetBSD: SYS.h,v 1.8 2003/08/07 16:42:02 agc Exp $	*/
3
4/*-
5 * Copyright (c) 1990 The Regents of the University of California.
6 * All rights reserved.
7 *
8 * This code is derived from software contributed to Berkeley by
9 * William Jolitz.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 *    notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 *    notice, this list of conditions and the following disclaimer in the
18 *    documentation and/or other materials provided with the distribution.
19 * 3. Neither the name of the University nor the names of its contributors
20 *    may be used to endorse or promote products derived from this software
21 *    without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 *
35 *	from: @(#)SYS.h	5.5 (Berkeley) 5/7/91
36 */
37
38#include "DEFS.h"
39#include <sys/syscall.h>
40
41
42#define SYSENTRY(x)					\
43	.weak x;					\
44	x = _thread_sys_ ## x;				\
45	ENTRY(_thread_sys_ ## x)
46#define SYSENTRY_HIDDEN(x)				\
47	ENTRY(_thread_sys_ ## x)
48#define __END_HIDDEN(x)					\
49	END(_thread_sys_ ## x);				\
50	_HIDDEN_FALIAS(x, _thread_sys_ ## x);		\
51	END(_HIDDEN(x))
52#define __END(x)					\
53	__END_HIDDEN(x); END(x)
54
55#define SYSTRAP(x) \
56	ldr	r12, =SYS_ ## x;			\
5797:	swi	0;					\
58	PINSYSCALL(SYS_ ## x, 97b);			\
59	dsb	nsh;					\
60	isb
61
62#define	CERROR		__cerror
63
64#define _SYSCALL_NOERROR(x,y)						\
65	SYSENTRY(x);							\
66	SYSTRAP(y)
67#define _SYSCALL_HIDDEN_NOERROR(x,y)					\
68	SYSENTRY_HIDDEN(x);						\
69	SYSTRAP(y)
70
71#define _SYSCALL(x, y)							\
72	_SYSCALL_NOERROR(x,y);						\
73	bcs CERROR
74#define _SYSCALL_HIDDEN(x, y)						\
75	_SYSCALL_HIDDEN_NOERROR(x,y);					\
76	bcs CERROR
77
78#define SYSCALL_NOERROR(x)						\
79	_SYSCALL_NOERROR(x,x)
80
81#define SYSCALL(x)							\
82	_SYSCALL(x,x)
83
84
85#define PSEUDO_NOERROR(x,y)						\
86	_SYSCALL_NOERROR(x,y);						\
87	mov r15, r14;							\
88	__END(x)
89
90#define PSEUDO(x,y)							\
91	_SYSCALL(x,y);							\
92	mov r15, r14;							\
93	__END(x)
94#define PSEUDO_HIDDEN(x,y)						\
95	_SYSCALL_HIDDEN(x,y);						\
96	mov r15, r14;							\
97	__END_HIDDEN(x)
98
99
100#define RSYSCALL_NOERROR(x)						\
101	PSEUDO_NOERROR(x,x)
102
103#define RSYSCALL(x)							\
104	PSEUDO(x,x)
105#define RSYSCALL_HIDDEN(x)						\
106	PSEUDO_HIDDEN(x,x)
107#define SYSCALL_END(x)							\
108	__END(x)
109#define SYSCALL_END_HIDDEN(x)						\
110	__END_HIDDEN(x)
111
112	.globl	CERROR
113