1/*-
2 * Copyright (c) 2005 David Xu <davidxu@freebsd.org>.
3 * Copyright (c) 2014 the FreeBSD Foundation
4 * All rights reserved.
5 *
6 * Portions of this software were developed by Andrew Turner
7 * under sponsorship from the FreeBSD Foundation
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 *
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 AUTHOR ``AS IS'' AND ANY EXPRESS OR
20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31#ifdef __arm__
32#include <arm/tls.h>
33#else /* !__arm__ */
34
35#ifndef _MACHINE_TLS_H_
36#define	_MACHINE_TLS_H_
37
38#include <sys/_tls_variant_i.h>
39
40#define	TLS_DTV_OFFSET	0
41#define	TLS_TCB_ALIGN	16
42#define	TLS_TP_OFFSET	0
43
44static __inline void
45_tcb_set(struct tcb *tcb)
46{
47	__asm __volatile("msr	tpidr_el0, %x0" :: "r" (tcb));
48}
49
50static __inline struct tcb *
51_tcb_get(void)
52{
53	struct tcb *tcb;
54
55	__asm __volatile("mrs	%x0, tpidr_el0" : "=r" (tcb));
56	return (tcb);
57}
58
59#endif /* !_MACHINE_TLS_H_ */
60
61#endif /* !__arm__ */
62