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688903eb | 1 | /* Copyright (C) 1992-2018 Free Software Foundation, Inc. |
54d79e99 UD |
2 | This file is part of the GNU C Library. |
3 | ||
4 | The GNU C Library is free software; you can redistribute it and/or | |
41bdb6e2 AJ |
5 | modify it under the terms of the GNU Lesser General Public |
6 | License as published by the Free Software Foundation; either | |
7 | version 2.1 of the License, or (at your option) any later version. | |
54d79e99 UD |
8 | |
9 | The GNU C Library is distributed in the hope that it will be useful, | |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
41bdb6e2 | 12 | Lesser General Public License for more details. |
54d79e99 | 13 | |
41bdb6e2 | 14 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 PE |
15 | License along with the GNU C Library; if not, see |
16 | <http://www.gnu.org/licenses/>. */ | |
28f540f4 RM |
17 | |
18 | #ifndef _ENDIAN_H | |
19 | #define _ENDIAN_H 1 | |
5107cf1d | 20 | |
28f540f4 RM |
21 | #include <features.h> |
22 | ||
7603ea28 UD |
23 | /* Definitions for byte order, according to significance of bytes, |
24 | from low addresses to high addresses. The value is what you get by | |
25 | putting '4' in the most significant byte, '3' in the second most | |
26 | significant byte, '2' in the second least significant byte, and '1' | |
27 | in the least significant byte, and then writing down one digit for | |
28 | each byte, starting with the byte at the lowest address at the left, | |
29 | and proceeding to the byte with the highest address at the right. */ | |
28f540f4 RM |
30 | |
31 | #define __LITTLE_ENDIAN 1234 | |
32 | #define __BIG_ENDIAN 4321 | |
33 | #define __PDP_ENDIAN 3412 | |
34 | ||
35 | /* This file defines `__BYTE_ORDER' for the particular machine. */ | |
5107cf1d | 36 | #include <bits/endian.h> |
28f540f4 | 37 | |
48252123 UD |
38 | /* Some machines may need to use a different endianness for floating point |
39 | values. */ | |
40 | #ifndef __FLOAT_WORD_ORDER | |
41 | # define __FLOAT_WORD_ORDER __BYTE_ORDER | |
42 | #endif | |
43 | ||
498afc54 | 44 | #ifdef __USE_MISC |
dfd2257a UD |
45 | # define LITTLE_ENDIAN __LITTLE_ENDIAN |
46 | # define BIG_ENDIAN __BIG_ENDIAN | |
47 | # define PDP_ENDIAN __PDP_ENDIAN | |
48 | # define BYTE_ORDER __BYTE_ORDER | |
28f540f4 RM |
49 | #endif |
50 | ||
ca1cde9e GM |
51 | #if __BYTE_ORDER == __LITTLE_ENDIAN |
52 | # define __LONG_LONG_PAIR(HI, LO) LO, HI | |
53 | #elif __BYTE_ORDER == __BIG_ENDIAN | |
54 | # define __LONG_LONG_PAIR(HI, LO) HI, LO | |
55 | #endif | |
56 | ||
2f9a1be8 | 57 | |
498afc54 | 58 | #if defined __USE_MISC && !defined __ASSEMBLER__ |
2f9a1be8 | 59 | /* Conversion interfaces. */ |
e92799fc | 60 | # include <bits/byteswap.h> |
6a1cefac | 61 | # include <bits/uintn-identity.h> |
e92799fc UD |
62 | |
63 | # if __BYTE_ORDER == __LITTLE_ENDIAN | |
64 | # define htobe16(x) __bswap_16 (x) | |
6a1cefac | 65 | # define htole16(x) __uint16_identity (x) |
e92799fc | 66 | # define be16toh(x) __bswap_16 (x) |
6a1cefac | 67 | # define le16toh(x) __uint16_identity (x) |
e92799fc UD |
68 | |
69 | # define htobe32(x) __bswap_32 (x) | |
6a1cefac | 70 | # define htole32(x) __uint32_identity (x) |
e92799fc | 71 | # define be32toh(x) __bswap_32 (x) |
6a1cefac | 72 | # define le32toh(x) __uint32_identity (x) |
e92799fc | 73 | |
6a57d931 | 74 | # define htobe64(x) __bswap_64 (x) |
6a1cefac | 75 | # define htole64(x) __uint64_identity (x) |
6a57d931 | 76 | # define be64toh(x) __bswap_64 (x) |
6a1cefac | 77 | # define le64toh(x) __uint64_identity (x) |
b1aa60f3 | 78 | |
e92799fc | 79 | # else |
6a1cefac | 80 | # define htobe16(x) __uint16_identity (x) |
e92799fc | 81 | # define htole16(x) __bswap_16 (x) |
6a1cefac | 82 | # define be16toh(x) __uint16_identity (x) |
e92799fc UD |
83 | # define le16toh(x) __bswap_16 (x) |
84 | ||
6a1cefac | 85 | # define htobe32(x) __uint32_identity (x) |
e92799fc | 86 | # define htole32(x) __bswap_32 (x) |
6a1cefac | 87 | # define be32toh(x) __uint32_identity (x) |
e92799fc UD |
88 | # define le32toh(x) __bswap_32 (x) |
89 | ||
6a1cefac | 90 | # define htobe64(x) __uint64_identity (x) |
6a57d931 | 91 | # define htole64(x) __bswap_64 (x) |
6a1cefac | 92 | # define be64toh(x) __uint64_identity (x) |
6a57d931 | 93 | # define le64toh(x) __bswap_64 (x) |
e92799fc | 94 | # endif |
2f9a1be8 UD |
95 | #endif |
96 | ||
28f540f4 | 97 | #endif /* endian.h */ |