Line | Count | Source |
1 | | /* zendian.h -- define BYTE_ORDER for endian tests |
2 | | * For conditions of distribution and use, see copyright notice in zlib.h |
3 | | */ |
4 | | |
5 | | #ifndef ENDIAN_H_ |
6 | | #define ENDIAN_H_ |
7 | | |
8 | | /* First check whether the compiler knows the target __BYTE_ORDER__. */ |
9 | | #if defined(__BYTE_ORDER__) |
10 | | # if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ |
11 | | # if !defined(LITTLE_ENDIAN) |
12 | | # define LITTLE_ENDIAN __ORDER_LITTLE_ENDIAN__ |
13 | | # endif |
14 | | # if !defined(BYTE_ORDER) |
15 | | # define BYTE_ORDER LITTLE_ENDIAN |
16 | | # endif |
17 | | # elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__ |
18 | | # if !defined(BIG_ENDIAN) |
19 | | # define BIG_ENDIAN __ORDER_BIG_ENDIAN__ |
20 | | # endif |
21 | | # if !defined(BYTE_ORDER) |
22 | | # define BYTE_ORDER BIG_ENDIAN |
23 | | # endif |
24 | | # endif |
25 | | #elif defined(__MINGW32__) |
26 | | # include <sys/param.h> |
27 | | #elif defined(_WIN32) |
28 | | # define LITTLE_ENDIAN 1234 |
29 | | # define BIG_ENDIAN 4321 |
30 | | # if defined(ARCH_X86) || defined(ARCH_IA64) || defined(ARCH_ARM) |
31 | | # define BYTE_ORDER LITTLE_ENDIAN |
32 | | # else |
33 | | # error Unknown endianness! |
34 | | # endif |
35 | | #elif defined(__linux__) |
36 | | # include <endian.h> |
37 | | #elif defined(__APPLE__) |
38 | | # include <machine/endian.h> |
39 | | #elif defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__bsdi__) || defined(__DragonFly__) |
40 | | # include <sys/endian.h> |
41 | | #elif defined(__sun) || defined(sun) |
42 | | # include <sys/byteorder.h> |
43 | | # if !defined(LITTLE_ENDIAN) |
44 | | # define LITTLE_ENDIAN 4321 |
45 | | # endif |
46 | | # if !defined(BIG_ENDIAN) |
47 | | # define BIG_ENDIAN 1234 |
48 | | # endif |
49 | | # if !defined(BYTE_ORDER) |
50 | | # if defined(_BIG_ENDIAN) |
51 | | # define BYTE_ORDER BIG_ENDIAN |
52 | | # else |
53 | | # define BYTE_ORDER LITTLE_ENDIAN |
54 | | # endif |
55 | | # endif |
56 | | #else |
57 | | # include <endian.h> |
58 | | #endif |
59 | | |
60 | | #if !defined(BYTE_ORDER) || (!defined(LITTLE_ENDIAN) && !defined(BIG_ENDIAN)) |
61 | | # error "Unknown byte order" |
62 | | #endif |
63 | | |
64 | | #if !defined(LITTLE_ENDIAN) |
65 | | # if BIG_ENDIAN == 1234 |
66 | | # define LITTLE_ENDIAN 4321 |
67 | | # elif BIG_ENDIAN == 4321 |
68 | | # define LITTLE_ENDIAN 1234 |
69 | | # else |
70 | | # define LITTLE_ENDIAN -1 |
71 | | # endif |
72 | | #elif !defined(BIG_ENDIAN) |
73 | | # if LITTLE_ENDIAN == 1234 |
74 | | # define BIG_ENDIAN 4321 |
75 | | # elif LITTLE_ENDIAN == 4321 |
76 | | # define BIG_ENDIAN 1234 |
77 | | # else |
78 | | # define BIG_ENDIAN -1 |
79 | | # endif |
80 | | #endif |
81 | | |
82 | | #if BYTE_ORDER == LITTLE_ENDIAN |
83 | 7.74k | # define Z_U16_TO_LE(x) (x) |
84 | 1.68M | # define Z_U32_TO_LE(x) (x) |
85 | 56.6k | # define Z_U64_TO_LE(x) (x) |
86 | | # define Z_U16_FROM_LE(x) (x) |
87 | 1.68M | # define Z_U32_FROM_LE(x) (x) |
88 | 1.68M | # define Z_U64_FROM_LE(x) (x) |
89 | 1.52k | # define Z_U16_TO_BE(x) ZSWAP16(x) |
90 | 1.52k | # define Z_U32_TO_BE(x) ZSWAP32(x) |
91 | | # define Z_U64_TO_BE(x) ZSWAP64(x) |
92 | | # define Z_U16_FROM_BE(x) ZSWAP16(x) |
93 | | # define Z_U32_FROM_BE(x) ZSWAP32(x) |
94 | | # define Z_U64_FROM_BE(x) ZSWAP64(x) |
95 | | #elif BYTE_ORDER == BIG_ENDIAN |
96 | | # define Z_U16_TO_LE(x) ZSWAP16(x) |
97 | | # define Z_U32_TO_LE(x) ZSWAP32(x) |
98 | | # define Z_U64_TO_LE(x) ZSWAP64(x) |
99 | | # define Z_U16_FROM_LE(x) ZSWAP16(x) |
100 | | # define Z_U32_FROM_LE(x) ZSWAP32(x) |
101 | | # define Z_U64_FROM_LE(x) ZSWAP64(x) |
102 | | # define Z_U16_TO_BE(x) (x) |
103 | | # define Z_U32_TO_BE(x) (x) |
104 | | # define Z_U64_TO_BE(x) (x) |
105 | | # define Z_U16_FROM_BE(x) (x) |
106 | | # define Z_U32_FROM_BE(x) (x) |
107 | | # define Z_U64_FROM_BE(x) (x) |
108 | | #endif |
109 | | |
110 | | #endif |