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endian.h
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1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2 
3 
4 #ifndef INCLUDED_OSL_ENDIAN_H
5 #define INCLUDED_OSL_ENDIAN_H
6 
7 #include "sal/types.h"
8 
9 #ifdef __cplusplus
10 extern "C" {
11 #endif
12 
16 #if defined _WIN32
17 # if defined _M_ALPHA || defined _M_AMD64 || defined _M_IX86 \
18  || defined _M_MRX000 || defined _M_PPC || defined _M_ARM64
19 # define OSL_LITENDIAN
20 # endif
21 #elif defined ANDROID || defined LINUX || defined HAIKU
22 # include <endian.h>
23 # if __BYTE_ORDER == __LITTLE_ENDIAN
24 # define OSL_LITENDIAN
25 # elif __BYTE_ORDER == __BIG_ENDIAN
26 # define OSL_BIGENDIAN
27 # endif
28 #elif defined IOS || defined MACOSX || defined NETBSD
29 # include <machine/endian.h>
30 # if BYTE_ORDER == LITTLE_ENDIAN
31 # define OSL_LITENDIAN
32 # elif BYTE_ORDER == BIG_ENDIAN
33 # define OSL_BIGENDIAN
34 # endif
35 #elif defined FREEBSD
36 # include <sys/param.h>
37 # include <machine/endian.h>
38 # if defined _LITTLE_ENDIAN
39 # define OSL_LITENDIAN
40 # elif defined _BIG_ENDIAN
41 # define OSL_BIGENDIAN
42 # endif
43 #elif defined AIX
44 # include <sys/machine.h>
45 # if BYTE_ORDER == LITTLE_ENDIAN
46 # define OSL_LITENDIAN
47 # elif BYTE_ORDER == BIG_ENDIAN
48 # define OSL_BIGENDIAN
49 # endif
50 #elif defined __sun
51 # include <sys/isa_defs.h>
52 # if defined _LITTLE_ENDIAN
53 # define OSL_LITENDIAN
54 # elif defined _BIG_ENDIAN
55 # define OSL_BIGENDIAN
56 # endif
57 #elif defined EMSCRIPTEN
58 # define OSL_LITENDIAN
59 #else
60 # error "Target platform not specified !"
61 #endif
62 #if defined OSL_LITENDIAN == defined OSL_BIGENDIAN
63 # error undetermined endianness
64 #endif
65 
66 
69 #ifndef OSL_MAKEBYTE
70 # define OSL_MAKEBYTE(nl, nh) ((sal_uInt8)(((nl) & 0x0F) | (((nh) & 0x0F) << 4)))
71 #endif
72 #ifndef OSL_LONIBBLE
73 # define OSL_LONIBBLE(b) ((sal_uInt8)((b) & 0x0F))
74 #endif
75 #ifndef OSL_HINIBBLE
76 # define OSL_HINIBBLE(b) ((sal_uInt8)(((b) >> 4) & 0x0F))
77 #endif
78 
79 #ifndef OSL_MAKEWORD
80 # define OSL_MAKEWORD(bl, bh) ((sal_uInt16)((sal_uInt16)((bl) & 0xFF) | (((sal_uInt16)(bh) & 0xFF) << 8)))
81 #endif
82 #ifndef OSL_LOBYTE
83 # define OSL_LOBYTE(w) ((sal_uInt8)((sal_uInt16)(w) & 0xFF))
84 #endif
85 #ifndef OSL_HIBYTE
86 # define OSL_HIBYTE(w) ((sal_uInt8)(((sal_uInt16)(w) >> 8) & 0xFF))
87 #endif
88 
89 #ifndef OSL_MAKEDWORD
90 # define OSL_MAKEDWORD(wl, wh) ((sal_uInt32)((wl) & 0xFFFF) | (((sal_uInt32)(wh) & 0xFFFF) << 16))
91 #endif
92 #ifndef OSL_LOWORD
93 # define OSL_LOWORD(d) ((sal_uInt16)((sal_uInt32)(d) & 0xFFFF))
94 #endif
95 #ifndef OSL_HIWORD
96 # define OSL_HIWORD(d) ((sal_uInt16)(((sal_uInt32)(d) >> 16) & 0xFFFF))
97 #endif
98 
99 
102 #ifdef OSL_BIGENDIAN
103 #ifndef OSL_NETWORD
104 # define OSL_NETWORD(w) (sal_uInt16)(w)
105 #endif
106 #ifndef OSL_NETDWORD
107 # define OSL_NETDWORD(d) (sal_uInt32)(d)
108 #endif
109 #else /* OSL_LITENDIAN */
110 #ifndef OSL_NETWORD
111 # define OSL_NETWORD(w) OSL_MAKEWORD(OSL_HIBYTE(w),OSL_LOBYTE(w))
112 #endif
113 #ifndef OSL_NETDWORD
114 # define OSL_NETDWORD(d) OSL_MAKEDWORD(OSL_NETWORD(OSL_HIWORD(d)),OSL_NETWORD(OSL_LOWORD(d)))
115 #endif
116 #endif /* OSL_BIGENDIAN */
117 
118 
121 #ifndef OSL_SWAPWORD
122 # define OSL_SWAPWORD(w) OSL_MAKEWORD(OSL_HIBYTE(w),OSL_LOBYTE(w))
123 #endif
124 #ifndef OSL_SWAPDWORD
125 # define OSL_SWAPDWORD(d) OSL_MAKEDWORD(OSL_SWAPWORD(OSL_HIWORD(d)),OSL_SWAPWORD(OSL_LOWORD(d)))
126 #endif
127 
128 
129 #ifdef __cplusplus
130 }
131 #endif
132 
133 #endif // INCLUDED_OSL_ENDIAN_H
134 
135 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */