stackimpl.h

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/*
 *  COPYRIGHT (c) 1989-2006.
 *  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_SCORE_STACKIMPL_H
#define _RTEMS_SCORE_STACKIMPL_H

#include <rtems/score/stack.h>
#include <rtems/score/context.h>
#include <rtems/score/tls.h>

#ifdef __cplusplus
extern "C" {
#endif

RTEMS_INLINE_ROUTINE void _Stack_Initialize (
  Stack_Control *the_stack,
  void          *starting_address,
  size_t         size
)
{
  the_stack->area = starting_address;
  the_stack->size = size;
}

RTEMS_INLINE_ROUTINE uint32_t _Stack_Minimum (void)
{
  return rtems_minimum_stack_size;
}

RTEMS_INLINE_ROUTINE bool _Stack_Is_enough(
  size_t size,
  bool   is_fp
)
{
  size_t minimum;

  minimum = _TLS_Get_allocation_size();
  minimum += _Stack_Minimum();

#if ( CPU_HARDWARE_FP == TRUE ) || ( CPU_SOFTWARE_FP == TRUE )
  if ( is_fp ) {
    minimum += CONTEXT_FP_SIZE;
  }
#endif

  return ( size >= minimum );
}

RTEMS_INLINE_ROUTINE size_t _Stack_Ensure_minimum (
  size_t size
)
{
  if ( size >= _Stack_Minimum() )
    return size;
  return _Stack_Minimum();
}

RTEMS_INLINE_ROUTINE size_t _Stack_Extend_size(
  size_t stack_size,
  bool   is_fp
)
{
#if ( CPU_HARDWARE_FP == TRUE ) || ( CPU_SOFTWARE_FP == TRUE )
  if ( is_fp ) {
    stack_size += CONTEXT_FP_SIZE;
  }
#else
  (void) is_fp;
#endif

  stack_size += _TLS_Get_allocation_size();

  return stack_size;
}

void *_Stack_Allocate( size_t stack_size );

void _Stack_Free( void *stack_area );

#ifdef __cplusplus
}
#endif

#endif
/* end of include file */