xref: /xnu-8020.140.41/bsd/arm/endian.h (revision 27b03b360a988dfd3dfdf34262bb0042026747cc)
1 /*
2  * Copyright (c) 2000-2007 Apple Inc. All rights reserved.
3  */
4 /*
5  * Copyright 1995 NeXT Computer, Inc. All rights reserved.
6  */
7 /*
8  * Copyright (c) 1987, 1991, 1993
9  *	The Regents of the University of California.  All rights reserved.
10  *
11  * Redistribution and use in source and binary forms, with or without
12  * modification, are permitted provided that the following conditions
13  * are met:
14  * 1. Redistributions of source code must retain the above copyright
15  *    notice, this list of conditions and the following disclaimer.
16  * 2. Redistributions in binary form must reproduce the above copyright
17  *    notice, this list of conditions and the following disclaimer in the
18  *    documentation and/or other materials provided with the distribution.
19  * 3. All advertising materials mentioning features or use of this software
20  *    must display the following acknowledgement:
21  *	This product includes software developed by the University of
22  *	California, Berkeley and its contributors.
23  * 4. Neither the name of the University nor the names of its contributors
24  *    may be used to endorse or promote products derived from this software
25  *    without specific prior written permission.
26  *
27  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
28  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
29  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
30  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
31  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
32  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
33  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
34  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
35  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
36  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
37  * SUCH DAMAGE.
38  *
39  *	@(#)endian.h	8.1 (Berkeley) 6/11/93
40  */
41 
42 #ifndef _ARM__ENDIAN_H_
43 #define _ARM__ENDIAN_H_
44 
45 #if defined (__arm__) || defined (__arm64__)
46 
47 #include <sys/cdefs.h>
48 /*
49  * Define _NOQUAD if the compiler does NOT support 64-bit integers.
50  */
51 /* #define _NOQUAD */
52 
53 /*
54  * Define the order of 32-bit words in 64-bit words.
55  */
56 #define _QUAD_HIGHWORD 1
57 #define _QUAD_LOWWORD 0
58 
59 /*
60  * Definitions for byte order, according to byte significance from low
61  * address to high.
62  */
63 #define __DARWIN_LITTLE_ENDIAN  1234    /* LSB first: i386, vax */
64 #define __DARWIN_BIG_ENDIAN     4321    /* MSB first: 68000, ibm, net */
65 #define __DARWIN_PDP_ENDIAN     3412    /* LSB first in word, MSW first in long */
66 
67 #define __DARWIN_BYTE_ORDER     __DARWIN_LITTLE_ENDIAN
68 
69 #if     defined(KERNEL) || (!defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE))
70 
71 #define LITTLE_ENDIAN   __DARWIN_LITTLE_ENDIAN
72 #define BIG_ENDIAN      __DARWIN_BIG_ENDIAN
73 #define PDP_ENDIAN      __DARWIN_PDP_ENDIAN
74 
75 #define BYTE_ORDER      __DARWIN_BYTE_ORDER
76 
77 #include <sys/_endian.h>
78 
79 #endif /* defined(KERNEL) || (!defined(_POSIX_C_SOURCE) || defined(_DARWIN_C_SOURCE)) */
80 #endif /* defined (__arm__) || defined (__arm64__) */
81 #endif /* !_ARM__ENDIAN_H_ */
82