/* High precision, low overhead timing functions.  Alpha version.

   Copyright (C) 2001-2018 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   Contributed by Richard Henderson <rth@redhat.com>, 2001.

   The GNU C Library is free software; you can redistribute it and/or

   modify it under the terms of the GNU Lesser General Public

   License as published by the Free Software Foundation; either

   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,

   but WITHOUT ANY WARRANTY; without even the implied warranty of

   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public

   License along with the GNU C Library.  If not, see

   <http://www.gnu.org/licenses/>.  */

#ifndef _HP_TIMING_ALPHA_H

#define _HP_TIMING_ALPHA_H	1

#if IS_IN(rtld)

/* We always have the timestamp register, but it's got only a 4 second

   range.  Use it for ld.so profiling only.  */

# define HP_TIMING_INLINE	(1)

/* We use 32 bit values for the times.  */

typedef unsigned int hp_timing_t;

/* The "rpcc" instruction returns a 32-bit counting half and a 32-bit

   "virtual cycle counter displacement".  Subtracting the two gives us

   a virtual cycle count.  */

# define HP_TIMING_NOW(VAR) \

  do {									      \

    unsigned long int x_;						      \

    asm volatile ("rpcc %0" : "=r"(x_));				      \

    (VAR) = (int) (x_) - (int) (x_ >> 32);				      \

  } while (0)

# include <hp-timing-common.h>

#else

# include <sysdeps/generic/hp-timing.h>

#endif /* IS_IN(rtld)  */

#endif	/* hp-timing.h */