lib/libarch/i386/i386_pmc.c

   1 /*      $NetBSD: i386_pmc.c,v 1.2 2000/09/13 05:20:47 thorpej Exp $     */
   2
   3 /*-
   4  * Copyright (c) 2000 Zembu Labs, Inc.
   5  * All rights reserved.
   6  *
   7  * Author: Jason R. Thorpe <thorpej@zembu.com>
   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  * 3. All advertising materials mentioning features or use of this software
  18  *    must display the following acknowledgement:
  19  *      This product includes software developed by Zembu Labs, Inc.
  20  * 4. Neither the name of Zembu Labs nor the names of its employees may
  21  *    be used to endorse or promote products derived from this software
  22  *    without specific prior written permission.
  23  *
  24  * THIS SOFTWARE IS PROVIDED BY ZEMBU LABS, INC. ``AS IS'' AND ANY EXPRESS
  25  * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WAR-
  26  * RANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DIS-
  27  * CLAIMED.  IN NO EVENT SHALL ZEMBU LABS BE LIABLE FOR ANY DIRECT, INDIRECT,
  28  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  29  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  30  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  31  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  32  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  33  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  34  */
  35
  36 /*
  37  * Interface to x86 CPU Performance Counters.
  38  */
  39
  40 #include <sys/types.h>
  41
  42 #include <machine/sysarch.h>
  43
  44 int
  45 i386_pmc_info(struct i386_pmc_info_args *args)
  46 {
  47
  48         if (sysarch(I386_PMC_INFO, args) == -1)
  49                 return (-1);
  50
  51         return (0);
  52 }
  53
  54 int
  55 i386_pmc_startstop(struct i386_pmc_startstop_args *args)
  56 {
  57
  58         if (sysarch(I386_PMC_STARTSTOP, args) == -1)
  59                 return (-1);
  60
  61         return (0);
  62 }
  63
  64 int
  65 i386_pmc_read(struct i386_pmc_read_args *args)
  66 {
  67
  68         if (sysarch(I386_PMC_READ, args) == -1)
  69                 return (-1);
  70
  71         return (0);
  72 }