projects / lttng-ust.git / blame
| Commit | Line | Data |
|---|---|---|
| 2ae57758 | 1 | /* |
| c0c0989a | 2 | * SPDX-License-Identifier: MIT |
| 2ae57758 | 3 | * |
| c0c0989a | 4 | * Copyright (C) 2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
| 06e646e0 MJ |
5 | */ |
| 6 | ||
| 7 | /* | |
| 8 | * This header defines the following endian macros based on the current | |
| 9 | * platform endian headers: | |
| 10 | * | |
| 11 | * BYTE_ORDER this macro shall have a value equal to one | |
| 12 | * of the *_ENDIAN macros in this header. | |
| 13 | * FLOAT_WORD_ORDER this macro shall have a value equal to one | |
| 14 | * of the *_ENDIAN macros in this header. | |
| 15 | * LITTLE_ENDIAN if BYTE_ORDER == LITTLE_ENDIAN, the host | |
| 16 | * byte order is from least significant to | |
| 17 | * most significant. | |
| 18 | * BIG_ENDIAN if BYTE_ORDER == BIG_ENDIAN, the host byte | |
| 19 | * order is from most significant to least | |
| 20 | * significant. | |
| 21 | * | |
| 22 | * Direct byte swapping interfaces: | |
| 2ae57758 | 23 | * |
| 06e646e0 MJ |
24 | * uint16_t bswap_16(uint16_t x); (* swap bytes 16-bit word *) |
| 25 | * uint32_t bswap_32(uint32_t x); (* swap bytes 32-bit word *) | |
| 26 | * uint64_t bswap_64(uint32_t x); (* swap bytes 64-bit word *) | |
| 2ae57758 MD |
27 | */ |
| 28 | ||
| c0c0989a MJ |
29 | #ifndef _LTTNG_UST_ENDIAN_H |
| 30 | #define _LTTNG_UST_ENDIAN_H | |
| 31 | ||
| 2928fe5a | 32 | #if (defined(__linux__) || defined(__CYGWIN__)) |
| 2ae57758 | 33 | #include <endian.h> |
| 3208818b | 34 | #include <byteswap.h> |
| 75181c4b | 35 | #elif defined(__FreeBSD__) |
| 3208818b MJ |
36 | #include <sys/endian.h> |
| 37 | #define bswap_16(x) bswap16(x) | |
| 38 | #define bswap_32(x) bswap32(x) | |
| 39 | #define bswap_64(x) bswap64(x) | |
| 2ae57758 | 40 | #else |
| cc300254 | 41 | #error "Please add support for your OS." |
| 2ae57758 MD |
42 | #endif |
| 43 | ||
| 484fc193 MD |
44 | /* |
| 45 | * BYTE_ORDER, LITTLE_ENDIAN, and BIG_ENDIAN are only defined on Linux | |
| 46 | * if __USE_BSD is defined. Force their definition. | |
| 47 | */ | |
| 48 | #ifndef BYTE_ORDER | |
| 49 | #define BYTE_ORDER __BYTE_ORDER | |
| 50 | #endif | |
| 51 | ||
| 52 | #ifndef LITTLE_ENDIAN | |
| 53 | #define LITTLE_ENDIAN __LITTLE_ENDIAN | |
| 54 | #endif | |
| 55 | ||
| 56 | #ifndef BIG_ENDIAN | |
| 57 | #define BIG_ENDIAN __BIG_ENDIAN | |
| 58 | #endif | |
| 59 | ||
| ad496c21 MD |
60 | #ifndef FLOAT_WORD_ORDER |
| 61 | #ifdef __FLOAT_WORD_ORDER | |
| 62 | #define FLOAT_WORD_ORDER __FLOAT_WORD_ORDER | |
| 63 | #else /* __FLOAT_WORD_ORDER */ | |
| 64 | #define FLOAT_WORD_ORDER BYTE_ORDER | |
| 65 | #endif /* __FLOAT_WORD_ORDER */ | |
| 66 | #endif /* FLOAT_WORD_ORDER */ | |
| 67 | ||
| 2ae57758 | 68 | #endif /* _LTTNG_UST_ENDIAN_H */ |