xref: /freebsd/sys/arm64/linux/linux_locore.asm (revision 25ecdc7d52770caf1c9b44b5ec11f468f6b636f3)
1/*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (C) 2018 Turing Robotic Industries Inc.
5 * Copyright (C) 2020 Andrew Turner <andrew@FreeBSD.org>
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 *
28 * $FreeBSD$
29 */
30
31/*
32 * arm64 Linux VDSO implementation.
33 */
34
35#include <machine/asm.h>
36
37#include <arm64/linux/linux_syscall.h>
38
39	.data
40
41	.globl linux_platform
42linux_platform:
43	.asciz "aarch64"
44
45	.text
46
47ENTRY(__kernel_rt_sigreturn)
48	brk #0 /* LINUXTODO: implement __kernel_rt_sigreturn */
49	ret
50END(__kernel_rt_sigreturn)
51
52ENTRY(__kernel_gettimeofday)
53	ldr	x8, =LINUX_SYS_gettimeofday
54	svc	#0
55	ret
56END(__kernel_gettimeofday)
57
58ENTRY(__kernel_clock_gettime)
59	ldr	x8, =LINUX_SYS_linux_clock_gettime
60	svc	#0
61	ret
62END(__kernel_clock_gettime)
63
64ENTRY(__kernel_clock_getres)
65	brk #0 /* LINUXTODO: implement __kernel_clock_getres */
66	ret
67END(__kernel_clock_getres)
68