asrimpl.h

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/* COPYRIGHT (c) 1989-2008.
 * On-Line Applications Research Corporation (OAR).
 *
 * The license and distribution terms for this file may be
 * found in the file LICENSE in this distribution or at
 * http://www.rtems.org/license/LICENSE.
 */

#ifndef _RTEMS_RTEMS_ASRIMPL_H
#define _RTEMS_RTEMS_ASRIMPL_H

#include <rtems/rtems/asr.h>

#ifdef __cplusplus
extern "C" {
#endif

RTEMS_INLINE_ROUTINE void _ASR_Initialize (
  ASR_Information *asr
)
{
  asr->is_enabled      = false;
  asr->handler         = NULL;
  asr->mode_set        = RTEMS_DEFAULT_MODES;
  asr->signals_posted  = 0;
  asr->signals_pending = 0;
  asr->nest_level      = 0;
}

RTEMS_INLINE_ROUTINE void _ASR_Create( ASR_Information *asr )
{
  _ISR_lock_Initialize( &asr->Lock, "ASR" );
  _ASR_Initialize( asr );
}

RTEMS_INLINE_ROUTINE void _ASR_Destroy( ASR_Information *asr )
{
  _ISR_lock_Destroy( &asr->Lock );
}

RTEMS_INLINE_ROUTINE void _ASR_Swap_signals (
  ASR_Information *asr
)
{
  rtems_signal_set _signals;
  ISR_lock_Context lock_context;

  _ISR_lock_ISR_disable_and_acquire( &asr->Lock, &lock_context );
    _signals             = asr->signals_pending;
    asr->signals_pending = asr->signals_posted;
    asr->signals_posted  = _signals;
  _ISR_lock_Release_and_ISR_enable( &asr->Lock, &lock_context );
}

RTEMS_INLINE_ROUTINE bool _ASR_Is_null_handler (
  rtems_asr_entry asr_handler
)
{
  return asr_handler == NULL;
}

RTEMS_INLINE_ROUTINE bool _ASR_Are_signals_pending (
  ASR_Information *asr
)
{
  return asr->signals_posted != 0;
}

RTEMS_INLINE_ROUTINE void _ASR_Post_signals(
  ASR_Information  *asr,
  rtems_signal_set  signals,
  rtems_signal_set *signal_set
)
{
  ISR_lock_Context lock_context;

  _ISR_lock_ISR_disable_and_acquire( &asr->Lock, &lock_context );
    *signal_set |= signals;
  _ISR_lock_Release_and_ISR_enable( &asr->Lock, &lock_context );
}

RTEMS_INLINE_ROUTINE rtems_signal_set _ASR_Get_posted_signals(
  ASR_Information *asr
)
{
  rtems_signal_set signal_set;
  ISR_lock_Context lock_context;

  _ISR_lock_ISR_disable_and_acquire( &asr->Lock, &lock_context );
    signal_set = asr->signals_posted;
    asr->signals_posted = 0;
  _ISR_lock_Release_and_ISR_enable( &asr->Lock, &lock_context );

  return signal_set;
}

#ifdef __cplusplus
}
#endif

#endif
/* end of include file */