tc-modes.c

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/* SPDX-License-Identifier: BSD-2-Clause */

/*
 * Copyright (C) 2020 embedded brains GmbH (http://www.embedded-brains.de)
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

/*
 * Do not manually edit this file.  It is part of the RTEMS quality process
 * and was automatically generated.
 *
 * If you find something that needs to be fixed or worded better please
 * post a report to an RTEMS mailing list or raise a bug report:
 *
 * https://docs.rtems.org/branches/master/user/support/bugs.html
 *
 * For information on updating and regenerating please refer to:
 *
 * https://docs.rtems.org/branches/master/eng/req/howto.html
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include <rtems.h>

#include <rtems/test.h>

static bool IsPowerOfTwo( rtems_mode mode )
{
  return mode != 0 && ( mode & ( mode - 1 ) ) == 0;
}

static int PopCount( rtems_mode modes )
{
  int count;

  count = 0;

  while ( modes != 0 ) {
    ++count;
    modes &= modes - 1;
  }

  return count;
}

T_TEST_CASE( RtemsModeValModes )
{
  rtems_mode modes;

  T_plan(15);

  /* No action */
  T_step_true( 0, IsPowerOfTwo( RTEMS_NO_ASR ) );
  T_step_true( 1, IsPowerOfTwo( RTEMS_NO_PREEMPT ) );
  T_step_true( 2, IsPowerOfTwo( RTEMS_TIMESLICE ) );

  /* No action */
  T_step_eq_u32( 3, RTEMS_ASR, 0 );
  T_step_eq_u32( 4, RTEMS_DEFAULT_MODES, 0 );
  T_step_eq_u32( 5, RTEMS_NO_TIMESLICE, 0 );
  T_step_eq_u32( 6, RTEMS_PREEMPT, 0 );

  /* No action */
  T_step_eq_u32(
    7,
    RTEMS_ASR_MASK & RTEMS_ALL_MODE_MASKS,
    RTEMS_ASR_MASK
  );
  T_step_eq_u32(
    8,
    RTEMS_PREEMPT_MASK & RTEMS_ALL_MODE_MASKS,
    RTEMS_PREEMPT_MASK
  );
  T_step_eq_u32(
    9,
    RTEMS_TIMESLICE_MASK & RTEMS_ALL_MODE_MASKS,
    RTEMS_TIMESLICE_MASK
  );
  T_step_eq_u32(
    10,
    RTEMS_INTERRUPT_MASK & RTEMS_ALL_MODE_MASKS,
    RTEMS_INTERRUPT_MASK
  );

  /* No action */
  T_step_true( 11, IsPowerOfTwo( RTEMS_ASR_MASK ) );
  T_step_true( 12, IsPowerOfTwo( RTEMS_PREEMPT_MASK ) );
  T_step_true( 13, IsPowerOfTwo( RTEMS_TIMESLICE_MASK ) );

  modes = 0;
  modes |= 0xff;
  modes |= RTEMS_ASR_MASK;
  modes |= RTEMS_PREEMPT_MASK;
  modes |= RTEMS_TIMESLICE_MASK;
  T_step_eq_int( 14, PopCount( modes ), 11 );
}