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endian.h
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1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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19 
20 #ifndef INCLUDED_OSL_ENDIAN_H
21 #define INCLUDED_OSL_ENDIAN_H
22 
23 #include <sal/types.h>
24 
25 #ifdef __cplusplus
26 extern "C" {
27 #endif
28 
32 #if defined _WIN32
33 # if defined _M_ALPHA || defined _M_AMD64 || defined _M_IX86 \
34  || defined _M_MRX000 || defined _M_PPC
35 # define OSL_LITENDIAN
36 # endif
37 #elif defined ANDROID || defined LINUX
38 # include <endian.h>
39 # if __BYTE_ORDER == __LITTLE_ENDIAN
40 # define OSL_LITENDIAN
41 # elif __BYTE_ORDER == __BIG_ENDIAN
42 # define OSL_BIGENDIAN
43 # endif
44 #elif defined EMSCRIPTEN
45 # define OSL_LITENDIAN
46 #elif defined IOS || defined MACOSX || defined NETBSD
47 # include <machine/endian.h>
48 # if BYTE_ORDER == LITTLE_ENDIAN
49 # define OSL_LITENDIAN
50 # elif BYTE_ORDER == BIG_ENDIAN
51 # define OSL_BIGENDIAN
52 # endif
53 #elif defined FREEBSD
54 # include <sys/param.h>
55 # include <machine/endian.h>
56 # if defined _LITTLE_ENDIAN
57 # define OSL_LITENDIAN
58 # elif defined _BIG_ENDIAN
59 # define OSL_BIGENDIAN
60 # endif
61 #elif defined AIX
62 # include <sys/machine.h>
63 # if BYTE_ORDER == LITTLE_ENDIAN
64 # define OSL_LITENDIAN
65 # elif BYTE_ORDER == BIG_ENDIAN
66 # define OSL_BIGENDIAN
67 # endif
68 #elif defined SOLARIS
69 # include <sys/isa_defs.h>
70 # if defined _LITTLE_ENDIAN
71 # define OSL_LITENDIAN
72 # elif defined _BIG_ENDIAN
73 # define OSL_BIGENDIAN
74 # endif
75 #else
76 # error "Target platform not specified !"
77 #endif
78 #if defined OSL_LITENDIAN == defined OSL_BIGENDIAN
79 # error undetermined endianness
80 #endif
81 
82 
85 #ifndef OSL_MAKEBYTE
86 # define OSL_MAKEBYTE(nl, nh) ((sal_uInt8)(((nl) & 0x0F) | (((nh) & 0x0F) << 4)))
87 #endif
88 #ifndef OSL_LONIBBLE
89 # define OSL_LONIBBLE(b) ((sal_uInt8)((b) & 0x0F))
90 #endif
91 #ifndef OSL_HINIBBLE
92 # define OSL_HINIBBLE(b) ((sal_uInt8)(((b) >> 4) & 0x0F))
93 #endif
94 
95 #ifndef OSL_MAKEWORD
96 # define OSL_MAKEWORD(bl, bh) ((sal_uInt16)((sal_uInt16)((bl) & 0xFF) | (((sal_uInt16)(bh) & 0xFF) << 8)))
97 #endif
98 #ifndef OSL_LOBYTE
99 # define OSL_LOBYTE(w) ((sal_uInt8)((sal_uInt16)(w) & 0xFF))
100 #endif
101 #ifndef OSL_HIBYTE
102 # define OSL_HIBYTE(w) ((sal_uInt8)(((sal_uInt16)(w) >> 8) & 0xFF))
103 #endif
104 
105 #ifndef OSL_MAKEDWORD
106 # define OSL_MAKEDWORD(wl, wh) ((sal_uInt32)((wl) & 0xFFFF) | (((sal_uInt32)(wh) & 0xFFFF) << 16))
107 #endif
108 #ifndef OSL_LOWORD
109 # define OSL_LOWORD(d) ((sal_uInt16)((sal_uInt32)(d) & 0xFFFF))
110 #endif
111 #ifndef OSL_HIWORD
112 # define OSL_HIWORD(d) ((sal_uInt16)(((sal_uInt32)(d) >> 16) & 0xFFFF))
113 #endif
114 
115 
118 #ifdef OSL_BIGENDIAN
119 #ifndef OSL_NETWORD
120 # define OSL_NETWORD(w) (sal_uInt16)(w)
121 #endif
122 #ifndef OSL_NETDWORD
123 # define OSL_NETDWORD(d) (sal_uInt32)(d)
124 #endif
125 #else /* OSL_LITENDIAN */
126 #ifndef OSL_NETWORD
127 # define OSL_NETWORD(w) OSL_MAKEWORD(OSL_HIBYTE(w),OSL_LOBYTE(w))
128 #endif
129 #ifndef OSL_NETDWORD
130 # define OSL_NETDWORD(d) OSL_MAKEDWORD(OSL_NETWORD(OSL_HIWORD(d)),OSL_NETWORD(OSL_LOWORD(d)))
131 #endif
132 #endif /* OSL_BIGENDIAN */
133 
134 
137 #ifndef OSL_SWAPWORD
138 # define OSL_SWAPWORD(w) OSL_MAKEWORD(OSL_HIBYTE(w),OSL_LOBYTE(w))
139 #endif
140 #ifndef OSL_SWAPDWORD
141 # define OSL_SWAPDWORD(d) OSL_MAKEDWORD(OSL_SWAPWORD(OSL_HIWORD(d)),OSL_SWAPWORD(OSL_LOWORD(d)))
142 #endif
143 
144 
145 #ifdef __cplusplus
146 }
147 #endif
148 
149 #endif // INCLUDED_OSL_ENDIAN_H
150 
151 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */