source: rtems/cpukit/score/cpu/sparc/sparc-counter.c @ 2afb22b

5
Last change on this file since 2afb22b was 655ce0fb, checked in by Sebastian Huber <sebastian.huber@…>, on Jun 22, 2016 at 11:45:02 AM

sparc: Optimize CPU counter support

  • Property mode set to 100644
File size: 972 bytes
Line 
1/*
2 * Copyright (c) 2014, 2016 embedded brains GmbH.  All rights reserved.
3 *
4 *  embedded brains GmbH
5 *  Dornierstr. 4
6 *  82178 Puchheim
7 *  Germany
8 *  <rtems@embedded-brains.de>
9 *
10 * The license and distribution terms for this file may be
11 * found in the file LICENSE in this distribution or at
12 * http://www.rtems.org/license/LICENSE.
13 */
14
15#if HAVE_CONFIG_H
16  #include "config.h"
17#endif
18
19#include <rtems/score/sparcimpl.h>
20#include <rtems/config.h>
21
22CPU_Counter_ticks _SPARC_Counter_difference_normal(
23  CPU_Counter_ticks second,
24  CPU_Counter_ticks first
25)
26{
27  return second - first;
28}
29
30CPU_Counter_ticks _SPARC_Counter_difference_clock_period(
31  CPU_Counter_ticks second,
32  CPU_Counter_ticks first
33)
34{
35  CPU_Counter_ticks period;
36
37  period = rtems_configuration_get_microseconds_per_tick();
38
39  return ( first + period - second ) % period;
40}
41
42CPU_Counter_ticks _SPARC_Counter_difference_one(
43  CPU_Counter_ticks second,
44  CPU_Counter_ticks first
45)
46{
47  return 1;
48}
Note: See TracBrowser for help on using the repository browser.