Home | History | Annotate | Line # | Download | only in x86 
      1 /*	$NetBSD: rump_x86_cpu_counter.c,v 1.2 2020/06/15 09:09:24 msaitoh Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 2010 Antti Kantee.  All Rights Reserved.
      5  *
      6  * Redistribution and use in source and binary forms, with or without
      7  * modification, are permitted provided that the following conditions
      8  * are met:
      9  * 1. Redistributions of source code must retain the above copyright
     10  *    notice, this list of conditions and the following disclaimer.
     11  * 2. Redistributions in binary form must reproduce the above copyright
     12  *    notice, this list of conditions and the following disclaimer in the
     13  *    documentation and/or other materials provided with the distribution.
     14  *
     15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
     16  * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     17  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     18  * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
     21  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     25  * SUCH DAMAGE.
     26  */
     27 
     28 /*
     29  * __HAVE_CPU_COUNTER stubs.  It would be nice to have this
     30  * MI, but need MD for now because of inline-happy archs.
     31  */
     32 
     33 #include <sys/cdefs.h>
     34 __KERNEL_RCSID(0, "$NetBSD: rump_x86_cpu_counter.c,v 1.2 2020/06/15 09:09:24 msaitoh Exp $");
     35 
     36 #include <sys/param.h>
     37 
     38 #include <x86/cpu_counter.h>
     39 
     40 int
     41 cpu_hascounter(void)
     42 {
     43 
     44 	return 0;
     45 }
     46 
     47 uint64_t
     48 cpu_frequency(struct cpu_info *ci)
     49 {
     50 
     51 	return 0;
     52 }
     53 
     54 static uint64_t
     55 nullfunc64(void)
     56 {
     57 	return 0;
     58 }
     59 
     60 static uint32_t
     61 nullfunc32(void)
     62 {
     63 	return 0;
     64 }
     65 
     66 uint64_t (*cpu_counter)(void) = nullfunc64;
     67 uint32_t (*cpu_counter32)(void) = nullfunc32;
     68