address.h

RTEMS (Real-Time Executive for Multiprocessor Systems) is a free open source real-time operating sys

/*  address.h
 *
 *  This include file contains the information required to manipulate
 *  physical addresses.
 *
 *  COPYRIGHT (c) 1988-2002.
 *  On-Line Applications Research Corporation (OAR).
 *  All rights reserved.
 *
 *  $Id: address.h,v 1.5 2002/01/17 21:47:47 joel Exp $
 */

#ifndef __ADDRESSES_h
#define __ADDRESSES_h

/*
 *  _Addresses_Add_offset
 *
 *  DESCRIPTION:
 *
 *  This function is used to add an offset to a base address.
 *  It returns the resulting address.  This address is typically
 *  converted to an access type before being used further.
 */

STATIC INLINE void *_Addresses_Add_offset ( 
  void       *base, 
  unsigned32  offset
);

/*
 *  _Addresses_Subtract_offset
 *
 *  DESCRIPTION:
 *
 *  This function is used to subtract an offset from a base
 *  address.  It returns the resulting address.  This address is
 *  typically converted to an access type before being used further.
 */

STATIC INLINE void *_Addresses_Subtract_offset( 
  void       *base, 
  unsigned32  offset
);

/*
 *  _Addresses_Add
 *
 *  DESCRIPTION:
 *
 *  This function is used to add two addresses.  It returns the
 *  resulting address.  This address is typically converted to an
 *  access type before being used further.
 */

STATIC INLINE void *_Addresses_Add ( 
  void *left, 
  void *right 
);

/*
 *  _Addresses_Subtract
 *
 *  DESCRIPTION:
 *
 *  This function is used to subtract two addresses.  It returns the
 *  resulting offset.
 */

STATIC INLINE unsigned32 _Addresses_Subtract ( 
  void *left, 
  void *right 
);

/*
 *  _Addresses_Is_aligned
 *
 *  DESCRIPTION:
 *
 *  This function returns TRUE if the given address is correctly
 *  aligned for this processor and FALSE otherwise.  Proper alignment
 *  is based on correctness and efficiency.
 */

STATIC INLINE boolean _Addresses_Is_aligned ( 
  void *address
);

/*
 *  _Addresses_Is_in_range
 *
 *  DESCRIPTION:
 *
 *  This function returns TRUE if the given address is within the
 *  memory range specified and FALSE otherwise.  base is the address
 *  of the first byte in the memory range and limit is the address
 *  of the last byte in the memory range.  The base address is
 *  assumed to be lower than the limit address.
 */

STATIC INLINE boolean _Addresses_Is_in_range ( 
  void *address, 
  void *base,
  void *limit 
);

#include "address.inl"

#endif
/* end of include file */