source: rtems/cpukit/score/include/rtems/score/address.h @ ac7d5ef0

4.104.114.84.95
Last change on this file since ac7d5ef0 was ac7d5ef0, checked in by Joel Sherrill <joel.sherrill@…>, on May 11, 1995 at 5:39:37 PM

Initial revision

  • Property mode set to 100644
File size: 2.6 KB
Line 
1/*  address.h
2 *
3 *  This include file contains the information required to manipulate
4 *  physical addresses.
5 *
6 *  COPYRIGHT (c) 1989, 1990, 1991, 1992, 1993, 1994.
7 *  On-Line Applications Research Corporation (OAR).
8 *  All rights assigned to U.S. Government, 1994.
9 *
10 *  This material may be reproduced by or for the U.S. Government pursuant
11 *  to the copyright license under the clause at DFARS 252.227-7013.  This
12 *  notice must appear in all copies of this file and its derivatives.
13 *
14 *  $Id$
15 */
16
17#ifndef __RTEMS_ADDRESSES_h
18#define __RTEMS_ADDRESSES_h
19
20#ifdef __cplusplus
21extern "C" {
22#endif
23
24/*
25 *  _Addresses_Add_offset
26 *
27 *  DESCRIPTION:
28 *
29 *  This function is used to add an offset to a base address.
30 *  It returns the resulting address.  This address is typically
31 *  converted to an access type before being used further.
32 */
33
34STATIC INLINE void *_Addresses_Add_offset (
35  void       *base,
36  unsigned32  offset
37);
38
39/*
40 *  _Addresses_Subtract_offset
41 *
42 *  DESCRIPTION:
43 *
44 *  This function is used to subtract an offset from a base
45 *  address.  It returns the resulting address.  This address is
46 *  typically converted to an access type before being used further.
47 */
48
49STATIC INLINE void *_Addresses_Subtract_offset(
50  void       *base,
51  unsigned32  offset
52);
53
54/*
55 *  _Addresses_Add
56 *
57 *  DESCRIPTION:
58 *
59 *  This function is used to add two addresses.  It returns the
60 *  resulting address.  This address is typically converted to an
61 *  access type before being used further.
62 */
63
64STATIC INLINE void *_Addresses_Add (
65  void *left,
66  void *right
67);
68
69/*
70 *  _Addresses_Subtract
71 *
72 *  DESCRIPTION:
73 *
74 *  This function is used to subtract two addresses.  It returns the
75 *  resulting offset.
76 */
77
78STATIC INLINE unsigned32 _Addresses_Subtract (
79  void *left,
80  void *right
81);
82
83/*
84 *  _Addresses_Is_aligned
85 *
86 *  DESCRIPTION:
87 *
88 *  This function returns TRUE if the given address is correctly
89 *  aligned for this processor and FALSE otherwise.  Proper alignment
90 *  is based on correctness and efficiency.
91 */
92
93STATIC INLINE boolean _Addresses_Is_aligned (
94  void *address
95);
96
97/*
98 *  _Addresses_Is_in_range
99 *
100 *  DESCRIPTION:
101 *
102 *  This function returns TRUE if the given address is within the
103 *  memory range specified and FALSE otherwise.  base is the address
104 *  of the first byte in the memory range and limit is the address
105 *  of the last byte in the memory range.  The base address is
106 *  assumed to be lower than the limit address.
107 */
108
109STATIC INLINE boolean _Addresses_Is_in_range (
110  void *address,
111  void *base,
112  void *limit
113);
114
115#include <rtems/address.inl>
116
117#ifdef __cplusplus
118}
119#endif
120
121#endif
122/* end of include file */
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