SYS.h revision 331722 
1/*	$NetBSD: SYS.h,v 1.8 2003/08/07 16:42:02 agc Exp $	*/
2
3/*-
4 * Copyright (c) 1990 The Regents of the University of California.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to Berkeley by
8 * William Jolitz.
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 * 3. Neither the name of the University nor the names of its contributors
19 *    may be used to endorse or promote products derived from this software
20 *    without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 *
34 *	from: @(#)SYS.h	5.5 (Berkeley) 5/7/91
35 * $FreeBSD: stable/11/lib/libc/arm/SYS.h 331722 2018-03-29 02:50:57Z eadler $
36 */
37
38#include <machine/asm.h>
39#include <sys/syscall.h>
40#include <machine/swi.h>
41
42#define SYSTRAP(x)							\
43			mov ip, r7;					\
44			ldr r7, =SYS_ ## x;				\
45			swi 0;						\
46			mov r7, ip
47
48#define	CERROR		_C_LABEL(cerror)
49#define	CURBRK		_C_LABEL(curbrk)
50
51#define _SYSCALL_NOERROR(x)						\
52	ENTRY(__CONCAT(__sys_, x));					\
53	.weak _C_LABEL(x);						\
54	.set _C_LABEL(x), _C_LABEL(__CONCAT(__sys_,x));			\
55	.weak _C_LABEL(__CONCAT(_,x));					\
56	.set _C_LABEL(__CONCAT(_,x)),_C_LABEL(__CONCAT(__sys_,x));	\
57	SYSTRAP(x)
58
59#define _SYSCALL(x)							\
60	_SYSCALL_NOERROR(x);						\
61	it	cs;							\
62	bcs PIC_SYM(CERROR, PLT)
63
64#define SYSCALL(x)							\
65	_SYSCALL(x)
66
67#define PSEUDO(x)							\
68	ENTRY(__CONCAT(__sys_, x));					\
69	.weak _C_LABEL(__CONCAT(_,x));					\
70	.set _C_LABEL(__CONCAT(_,x)),_C_LABEL(__CONCAT(__sys_,x));	\
71	SYSTRAP(x);							\
72	it	cs;							\
73	bcs PIC_SYM(CERROR, PLT);					\
74	RET
75
76#define RSYSCALL(x)							\
77	_SYSCALL(x);							\
78	RET
79
80	.globl  CERROR
81