xref: /freebsd/sys/x86/include/vdso.h (revision 193d9e768ba63fcfb187cfd17f461f7d41345048)
1 /*-
2  * Copyright 2012 Konstantin Belousov <kib@FreeBSD.ORG>.
3  * Copyright 2016 The FreeBSD Foundation.
4  * All rights reserved.
5  *
6  * Portions of this software were developed by Konstantin Belousov
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  * 1. Redistributions of source code must retain the above copyright
13  *    notice, this list of conditions and the following disclaimer.
14  * 2. Redistributions in binary form must reproduce the above copyright
15  *    notice, this list of conditions and the following disclaimer in the
16  *    documentation and/or other materials provided with the distribution.
17  *
18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28  *
29  * $FreeBSD$
30  */
31 
32 #ifndef _X86_VDSO_H
33 #define	_X86_VDSO_H
34 
35 #define	VDSO_TIMEHANDS_MD			\
36 	uint32_t	th_x86_shift;		\
37 	uint32_t	th_x86_hpet_idx;	\
38 	uint32_t	th_res[6];
39 
40 #define	VDSO_TH_ALGO_X86_TSC	VDSO_TH_ALGO_1
41 #define	VDSO_TH_ALGO_X86_HPET	VDSO_TH_ALGO_2
42 #define	VDSO_TH_ALGO_X86_HVTSC	VDSO_TH_ALGO_3	/* Hyper-V ref. TSC */
43 
44 #ifdef _KERNEL
45 #ifdef COMPAT_FREEBSD32
46 
47 #define	VDSO_TIMEHANDS_MD32	VDSO_TIMEHANDS_MD
48 
49 #endif
50 #endif
51 #endif
52