1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21/*
22 * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
23 * Use is subject to license terms.
24 */
25
26#ifndef _ASM_CLOCK_H
27#define	_ASM_CLOCK_H
28
29#pragma ident	"%Z%%M%	%I%	%E% SMI"
30
31#include <sys/types.h>
32#include <sys/time.h>
33
34#ifdef	__cplusplus
35extern "C" {
36#endif
37
38#if !defined(__lint) && defined(__GNUC__)
39
40#include <sys/machlock.h>
41
42extern __inline__ void unlock_hres_lock(void)
43{
44	__asm__ __volatile__(
45	    "lock; incl %0"
46	    : /* no output */
47	    : "m" (hres_lock)
48	    : "cc");
49}
50
51#if defined(__xpv)
52
53extern __inline__ hrtime_t __rdtsc_insn(void)
54{
55#if defined(__amd64)
56	uint32_t lobits, hibits;
57
58	__asm__ __volatile__(
59	    "rdtsc"
60	    : "=a" (lobits), "=d" (hibits));
61	return (lobits | ((hrtime_t)hibits << 32));
62#elif defined(__i386)
63	hrtime_t __value;
64
65	__asm__ __volatile__(
66	    "rdtsc"
67	    : "=A" (__value));
68	return (__value);
69#else
70#error	"port me"
71#endif
72}
73
74#endif /* __xpv */
75
76#endif	/* !__lint && __GNUC__ */
77
78#ifdef	__cplusplus
79}
80#endif
81
82#endif	/* _ASM_CLOCK_H */
83