1 /* $NetBSD: h_syscall.c,v 1.1 2023/08/19 22:56:44 christos Exp $ */
2
3 /*-
4 * Copyright (c) 2023 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Theodore Preduta.
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 #include <sys/cdefs.h>
32 __RCSID("$NetBSD: h_syscall.c,v 1.1 2023/08/19 22:56:44 christos Exp $");
33 #include "h_linux.h"
34
35 long
syscall6(long number,register_t arg1,register_t arg2,register_t arg3,register_t arg4,register_t arg5,register_t arg6,...)36 syscall6(long number, register_t arg1, register_t arg2, register_t arg3,
37 register_t arg4, register_t arg5, register_t arg6, ...)
38 {
39 long retval;
40 register register_t r10 __asm__ ("r10") = arg4;
41 register register_t r8 __asm__ ("r8") = arg5;
42 register register_t r9 __asm__ ("r9") = arg6;
43
44 __asm__ __volatile__ ("syscall"
45 : "=a"(retval)
46 : "a"(number), "D"(arg1), "S"(arg2), "d"(arg3), "r"(r10), "r"(r8), "r"(r9)
47 : "rcx", "r11", "memory");
48
49 if (retval < 0) {
50 errno = -retval;
51 return -1;
52 }
53
54 return retval;
55 }
56