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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2007 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#ifndef _ASM_CLOCK_H
#define _ASM_CLOCK_H
#pragma ident "%Z%%M% %I% %E% SMI"
#include <sys/types.h>
#include <sys/time.h>
#ifdef __cplusplus
extern "C" {
#endif
#if !defined(__lint) && defined(__GNUC__)
#include <sys/machlock.h>
extern __inline__ void unlock_hres_lock(void)
{
__asm__ __volatile__(
"lock; incl %0"
: /* no output */
: "m" (hres_lock)
: "cc");
}
#if defined(__xpv)
extern __inline__ hrtime_t __rdtsc_insn(void)
{
#if defined(__amd64)
uint32_t lobits, hibits;
__asm__ __volatile__(
"rdtsc"
: "=a" (lobits), "=d" (hibits));
return (lobits | ((hrtime_t)hibits << 32));
#elif defined(__i386)
hrtime_t __value;
__asm__ __volatile__(
"rdtsc"
: "=A" (__value));
return (__value);
#else
#error "port me"
#endif
}
#else /* __xpv */
/*
* rdtsc may not exist on 32-bit, so we don't have an inline for it.
*/
#if defined(__amd64)
extern __inline__ hrtime_t tsc_read(void)
{
uint32_t lobits, hibits;
__asm__ __volatile__(
"rdtsc"
: "=a" (lobits), "=d" (hibits));
return (lobits | ((hrtime_t)hibits << 32));
}
#endif /* __amd64 */
#endif /* __xpv */
#endif /* !__lint && __GNUC__ */
#ifdef __cplusplus
}
#endif
#endif /* _ASM_CLOCK_H */
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