| xf.li | bdd93d5 | 2023-05-12 07:10:14 -0700 | [diff] [blame^] | 1 | /* Copyright (C) 1992-2016 Free Software Foundation, Inc. |
| 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 |
| 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. |
| 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 |
| 12 | Lesser General Public License for more details. |
| 13 | |
| 14 | You should have received a copy of the GNU Lesser General Public |
| 15 | License along with the GNU C Library; if not, see |
| 16 | <http://www.gnu.org/licenses/>. */ |
| 17 | |
| 18 | #ifndef _ENDIAN_H |
| 19 | #define _ENDIAN_H 1 |
| 20 | |
| 21 | #include <features.h> |
| 22 | |
| 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. */ |
| 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. */ |
| 36 | #include <bits/endian.h> |
| 37 | |
| 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 | |
| 44 | #ifdef __USE_MISC |
| 45 | # define LITTLE_ENDIAN __LITTLE_ENDIAN |
| 46 | # define BIG_ENDIAN __BIG_ENDIAN |
| 47 | # define PDP_ENDIAN __PDP_ENDIAN |
| 48 | # define BYTE_ORDER __BYTE_ORDER |
| 49 | #endif |
| 50 | |
| 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 | |
| 57 | |
| 58 | #if defined __USE_MISC && !defined __ASSEMBLER__ |
| 59 | /* Conversion interfaces. */ |
| 60 | # include <bits/byteswap.h> |
| 61 | |
| 62 | # if __BYTE_ORDER == __LITTLE_ENDIAN |
| 63 | # define htobe16(x) __bswap_16 (x) |
| 64 | # define htole16(x) (x) |
| 65 | # define be16toh(x) __bswap_16 (x) |
| 66 | # define le16toh(x) (x) |
| 67 | |
| 68 | # define htobe32(x) __bswap_32 (x) |
| 69 | # define htole32(x) (x) |
| 70 | # define be32toh(x) __bswap_32 (x) |
| 71 | # define le32toh(x) (x) |
| 72 | |
| 73 | # define htobe64(x) __bswap_64 (x) |
| 74 | # define htole64(x) (x) |
| 75 | # define be64toh(x) __bswap_64 (x) |
| 76 | # define le64toh(x) (x) |
| 77 | |
| 78 | # else |
| 79 | # define htobe16(x) (x) |
| 80 | # define htole16(x) __bswap_16 (x) |
| 81 | # define be16toh(x) (x) |
| 82 | # define le16toh(x) __bswap_16 (x) |
| 83 | |
| 84 | # define htobe32(x) (x) |
| 85 | # define htole32(x) __bswap_32 (x) |
| 86 | # define be32toh(x) (x) |
| 87 | # define le32toh(x) __bswap_32 (x) |
| 88 | |
| 89 | # define htobe64(x) (x) |
| 90 | # define htole64(x) __bswap_64 (x) |
| 91 | # define be64toh(x) (x) |
| 92 | # define le64toh(x) __bswap_64 (x) |
| 93 | # endif |
| 94 | #endif |
| 95 | |
| 96 | #endif /* endian.h */ |