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| Current File : //usr/include/x86_64-linux-gnu/openmpi/openmpi/opal/sys/arm64/timer.h |
/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil -*- */
/*
* Copyright (c) 2008 The University of Tennessee and The University
* of Tennessee Research Foundation. All rights
* reserved.
* Copyright (c) 2016 Broadcom Limited. All rights reserved.
* Copyright (c) 2016 Los Alamos National Security, LLC. All rights
* reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#ifndef OPAL_SYS_ARCH_TIMER_H
#define OPAL_SYS_ARCH_TIMER_H 1
#include <sys/times.h>
typedef uint64_t opal_timer_t;
static inline opal_timer_t
opal_sys_timer_get_cycles(void)
{
opal_timer_t ret;
__asm__ __volatile__ ("isb" ::: "memory");
__asm__ __volatile__ ("mrs %0, CNTVCT_EL0" : "=r" (ret));
return ret;
}
static inline opal_timer_t
opal_sys_timer_freq(void)
{
opal_timer_t freq;
__asm__ __volatile__ ("mrs %0, CNTFRQ_EL0" : "=r" (freq));
return (opal_timer_t)(freq);
}
#define OPAL_HAVE_SYS_TIMER_GET_CYCLES 1
#endif /* ! OPAL_SYS_ARCH_TIMER_H */