address.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_ADDRESS_H
#define _RTEMS_SCORE_ADDRESS_H

#include <rtems/score/cpu.h>

#ifdef __cplusplus
extern "C" {
#endif

RTEMS_INLINE_ROUTINE void *_Addresses_Add_offset (
  const void *base,
  uintptr_t   offset
)
{
  return (void *)((uintptr_t)base + offset);
}

RTEMS_INLINE_ROUTINE void *_Addresses_Subtract_offset (
  const void *base,
  uintptr_t   offset
)
{
  return (void *)((uintptr_t)base - offset);
}

RTEMS_INLINE_ROUTINE int32_t _Addresses_Subtract (
  const void *left,
  const void *right
)
{
  return (int32_t) ((const char *) left - (const char *) right);
}

RTEMS_INLINE_ROUTINE bool _Addresses_Is_aligned (
  const void *address
)
{
#if (CPU_ALIGNMENT == 0)
    return true;
#else
    return (((uintptr_t)address % CPU_ALIGNMENT) == 0);
#endif
}

RTEMS_INLINE_ROUTINE bool _Addresses_Is_in_range (
  const void *address,
  const void *base,
  const void *limit
)
{
  return (address >= base && address <= limit);
}

RTEMS_INLINE_ROUTINE void *_Addresses_Align_up(
  void *address,
  size_t alignment
)
{
  uintptr_t mask = alignment - (uintptr_t)1;
  return (void*)(((uintptr_t)address + mask) & ~mask);
}

RTEMS_INLINE_ROUTINE void *_Addresses_Align_down(
  void *address,
  size_t alignment
)
{
  uintptr_t mask = alignment - (uintptr_t)1;
  return (void*)((uintptr_t)address & ~mask);
}

#ifdef __cplusplus
}
#endif

#endif
/* end of include file */