168349Sobrien/*-
268349Sobrien * SPDX-License-Identifier: BSD-2-Clause
368349Sobrien *
468349Sobrien * Copyright (c) 2005 David Xu <davidxu@freebsd.org>.
568349Sobrien * All rights reserved.
668349Sobrien *
768349Sobrien * Redistribution and use in source and binary forms, with or without
868349Sobrien * modification, are permitted provided that the following conditions
968349Sobrien * are met:
1068349Sobrien *
1168349Sobrien * 1. Redistributions of source code must retain the above copyright
1268349Sobrien *    notice, this list of conditions and the following disclaimer.
1368349Sobrien * 2. Redistributions in binary form must reproduce the above copyright
1468349Sobrien *    notice, this list of conditions and the following disclaimer in the
1568349Sobrien *    documentation and/or other materials provided with the distribution.
1668349Sobrien *
1768349Sobrien * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
1868349Sobrien * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
1968349Sobrien * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
2068349Sobrien * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
2168349Sobrien * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
2268349Sobrien * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
2368349Sobrien * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
2468349Sobrien * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
2580588Sobrien * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
2680588Sobrien * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
2780588Sobrien */
2880588Sobrien
29#ifndef _MACHINE_TLS_H_
30#define	_MACHINE_TLS_H_
31
32#include <sys/_tls_variant_i.h>
33#include <machine/sysarch.h>
34
35#define	TLS_DTV_OFFSET	0
36#define	TLS_TCB_ALIGN	8
37#define	TLS_TP_OFFSET	0
38
39static __inline void
40_tcb_set(struct tcb *tcb)
41{
42	sysarch(ARM_SET_TP, tcb);
43}
44
45static __inline struct tcb *
46_tcb_get(void)
47{
48	struct tcb *tcb;
49
50	__asm __volatile("mrc  p15, 0, %0, c13, c0, 3"		\
51	   		 : "=r" (tcb));
52	return (tcb);
53}
54
55#endif /* !_MACHINE_TLS_H_ */
56