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Diffstat (limited to 'ccan/endian/endian.h')
| -rw-r--r-- | ccan/endian/endian.h | 346 |
1 files changed, 0 insertions, 346 deletions
diff --git a/ccan/endian/endian.h b/ccan/endian/endian.h deleted file mode 100644 index 0c99cc8..0000000 --- a/ccan/endian/endian.h +++ /dev/null @@ -1,346 +0,0 @@ -/* CC0 (Public domain) - see LICENSE file for details */ -#ifndef CCAN_ENDIAN_H -#define CCAN_ENDIAN_H -#include <stdint.h> -#include "config.h" - -/** - * BSWAP_16 - reverse bytes in a constant uint16_t value. - * @val: constant value whose bytes to swap. - * - * Designed to be usable in constant-requiring initializers. - * - * Example: - * struct mystruct { - * char buf[BSWAP_16(0x1234)]; - * }; - */ -#define BSWAP_16(val) \ - ((((uint16_t)(val) & 0x00ff) << 8) \ - | (((uint16_t)(val) & 0xff00) >> 8)) - -/** - * BSWAP_32 - reverse bytes in a constant uint32_t value. - * @val: constant value whose bytes to swap. - * - * Designed to be usable in constant-requiring initializers. - * - * Example: - * struct mystruct { - * char buf[BSWAP_32(0xff000000)]; - * }; - */ -#define BSWAP_32(val) \ - ((((uint32_t)(val) & 0x000000ff) << 24) \ - | (((uint32_t)(val) & 0x0000ff00) << 8) \ - | (((uint32_t)(val) & 0x00ff0000) >> 8) \ - | (((uint32_t)(val) & 0xff000000) >> 24)) - -/** - * BSWAP_64 - reverse bytes in a constant uint64_t value. - * @val: constantvalue whose bytes to swap. - * - * Designed to be usable in constant-requiring initializers. - * - * Example: - * struct mystruct { - * char buf[BSWAP_64(0xff00000000000000ULL)]; - * }; - */ -#define BSWAP_64(val) \ - ((((uint64_t)(val) & 0x00000000000000ffULL) << 56) \ - | (((uint64_t)(val) & 0x000000000000ff00ULL) << 40) \ - | (((uint64_t)(val) & 0x0000000000ff0000ULL) << 24) \ - | (((uint64_t)(val) & 0x00000000ff000000ULL) << 8) \ - | (((uint64_t)(val) & 0x000000ff00000000ULL) >> 8) \ - | (((uint64_t)(val) & 0x0000ff0000000000ULL) >> 24) \ - | (((uint64_t)(val) & 0x00ff000000000000ULL) >> 40) \ - | (((uint64_t)(val) & 0xff00000000000000ULL) >> 56)) - -#if HAVE_BYTESWAP_H -#include <byteswap.h> -#else -/** - * bswap_16 - reverse bytes in a uint16_t value. - * @val: value whose bytes to swap. - * - * Example: - * // Output contains "1024 is 4 as two bytes reversed" - * printf("1024 is %u as two bytes reversed\n", bswap_16(1024)); - */ -static inline uint16_t bswap_16(uint16_t val) -{ - return BSWAP_16(val); -} - -/** - * bswap_32 - reverse bytes in a uint32_t value. - * @val: value whose bytes to swap. - * - * Example: - * // Output contains "1024 is 262144 as four bytes reversed" - * printf("1024 is %u as four bytes reversed\n", bswap_32(1024)); - */ -static inline uint32_t bswap_32(uint32_t val) -{ - return BSWAP_32(val); -} -#endif /* !HAVE_BYTESWAP_H */ - -#if !HAVE_BSWAP_64 -/** - * bswap_64 - reverse bytes in a uint64_t value. - * @val: value whose bytes to swap. - * - * Example: - * // Output contains "1024 is 1125899906842624 as eight bytes reversed" - * printf("1024 is %llu as eight bytes reversed\n", - * (unsigned long long)bswap_64(1024)); - */ -static inline uint64_t bswap_64(uint64_t val) -{ - return BSWAP_64(val); -} -#endif - -/* Sanity check the defines. We don't handle weird endianness. */ -#if !HAVE_LITTLE_ENDIAN && !HAVE_BIG_ENDIAN -#error "Unknown endian" -#elif HAVE_LITTLE_ENDIAN && HAVE_BIG_ENDIAN -#error "Can't compile for both big and little endian." -#endif - -#ifdef __CHECKER__ -/* sparse needs forcing to remove bitwise attribute from ccan/short_types */ -#define ENDIAN_CAST __attribute__((force)) -#define ENDIAN_TYPE __attribute__((bitwise)) -#else -#define ENDIAN_CAST -#define ENDIAN_TYPE -#endif - -typedef uint64_t ENDIAN_TYPE leint64_t; -typedef uint64_t ENDIAN_TYPE beint64_t; -typedef uint32_t ENDIAN_TYPE leint32_t; -typedef uint32_t ENDIAN_TYPE beint32_t; -typedef uint16_t ENDIAN_TYPE leint16_t; -typedef uint16_t ENDIAN_TYPE beint16_t; - -#if HAVE_LITTLE_ENDIAN -/** - * CPU_TO_LE64 - convert a constant uint64_t value to little-endian - * @native: constant to convert - */ -#define CPU_TO_LE64(native) ((ENDIAN_CAST leint64_t)(native)) - -/** - * CPU_TO_LE32 - convert a constant uint32_t value to little-endian - * @native: constant to convert - */ -#define CPU_TO_LE32(native) ((ENDIAN_CAST leint32_t)(native)) - -/** - * CPU_TO_LE16 - convert a constant uint16_t value to little-endian - * @native: constant to convert - */ -#define CPU_TO_LE16(native) ((ENDIAN_CAST leint16_t)(native)) - -/** - * LE64_TO_CPU - convert a little-endian uint64_t constant - * @le_val: little-endian constant to convert - */ -#define LE64_TO_CPU(le_val) ((ENDIAN_CAST uint64_t)(le_val)) - -/** - * LE32_TO_CPU - convert a little-endian uint32_t constant - * @le_val: little-endian constant to convert - */ -#define LE32_TO_CPU(le_val) ((ENDIAN_CAST uint32_t)(le_val)) - -/** - * LE16_TO_CPU - convert a little-endian uint16_t constant - * @le_val: little-endian constant to convert - */ -#define LE16_TO_CPU(le_val) ((ENDIAN_CAST uint16_t)(le_val)) - -#else /* ... HAVE_BIG_ENDIAN */ -#define CPU_TO_LE64(native) ((ENDIAN_CAST leint64_t)BSWAP_64(native)) -#define CPU_TO_LE32(native) ((ENDIAN_CAST leint32_t)BSWAP_32(native)) -#define CPU_TO_LE16(native) ((ENDIAN_CAST leint16_t)BSWAP_16(native)) -#define LE64_TO_CPU(le_val) BSWAP_64((ENDIAN_CAST uint64_t)le_val) -#define LE32_TO_CPU(le_val) BSWAP_32((ENDIAN_CAST uint32_t)le_val) -#define LE16_TO_CPU(le_val) BSWAP_16((ENDIAN_CAST uint16_t)le_val) -#endif /* HAVE_BIG_ENDIAN */ - -#if HAVE_BIG_ENDIAN -/** - * CPU_TO_BE64 - convert a constant uint64_t value to big-endian - * @native: constant to convert - */ -#define CPU_TO_BE64(native) ((ENDIAN_CAST beint64_t)(native)) - -/** - * CPU_TO_BE32 - convert a constant uint32_t value to big-endian - * @native: constant to convert - */ -#define CPU_TO_BE32(native) ((ENDIAN_CAST beint32_t)(native)) - -/** - * CPU_TO_BE16 - convert a constant uint16_t value to big-endian - * @native: constant to convert - */ -#define CPU_TO_BE16(native) ((ENDIAN_CAST beint16_t)(native)) - -/** - * BE64_TO_CPU - convert a big-endian uint64_t constant - * @le_val: big-endian constant to convert - */ -#define BE64_TO_CPU(le_val) ((ENDIAN_CAST uint64_t)(le_val)) - -/** - * BE32_TO_CPU - convert a big-endian uint32_t constant - * @le_val: big-endian constant to convert - */ -#define BE32_TO_CPU(le_val) ((ENDIAN_CAST uint32_t)(le_val)) - -/** - * BE16_TO_CPU - convert a big-endian uint16_t constant - * @le_val: big-endian constant to convert - */ -#define BE16_TO_CPU(le_val) ((ENDIAN_CAST uint16_t)(le_val)) - -#else /* ... HAVE_LITTLE_ENDIAN */ -#define CPU_TO_BE64(native) ((ENDIAN_CAST beint64_t)BSWAP_64(native)) -#define CPU_TO_BE32(native) ((ENDIAN_CAST beint32_t)BSWAP_32(native)) -#define CPU_TO_BE16(native) ((ENDIAN_CAST beint16_t)BSWAP_16(native)) -#define BE64_TO_CPU(le_val) BSWAP_64((ENDIAN_CAST uint64_t)le_val) -#define BE32_TO_CPU(le_val) BSWAP_32((ENDIAN_CAST uint32_t)le_val) -#define BE16_TO_CPU(le_val) BSWAP_16((ENDIAN_CAST uint16_t)le_val) -#endif /* HAVE_LITTE_ENDIAN */ - - -/** - * cpu_to_le64 - convert a uint64_t value to little-endian - * @native: value to convert - */ -static inline leint64_t cpu_to_le64(uint64_t native) -{ - return CPU_TO_LE64(native); -} - -/** - * cpu_to_le32 - convert a uint32_t value to little-endian - * @native: value to convert - */ -static inline leint32_t cpu_to_le32(uint32_t native) -{ - return CPU_TO_LE32(native); -} - -/** - * cpu_to_le16 - convert a uint16_t value to little-endian - * @native: value to convert - */ -static inline leint16_t cpu_to_le16(uint16_t native) -{ - return CPU_TO_LE16(native); -} - -/** - * le64_to_cpu - convert a little-endian uint64_t value - * @le_val: little-endian value to convert - */ -static inline uint64_t le64_to_cpu(leint64_t le_val) -{ - return LE64_TO_CPU(le_val); -} - -/** - * le32_to_cpu - convert a little-endian uint32_t value - * @le_val: little-endian value to convert - */ -static inline uint32_t le32_to_cpu(leint32_t le_val) -{ - return LE32_TO_CPU(le_val); -} - -/** - * le16_to_cpu - convert a little-endian uint16_t value - * @le_val: little-endian value to convert - */ -static inline uint16_t le16_to_cpu(leint16_t le_val) -{ - return LE16_TO_CPU(le_val); -} - -/** - * cpu_to_be64 - convert a uint64_t value to big endian. - * @native: value to convert - */ -static inline beint64_t cpu_to_be64(uint64_t native) -{ - return CPU_TO_BE64(native); -} - -/** - * cpu_to_be32 - convert a uint32_t value to big endian. - * @native: value to convert - */ -static inline beint32_t cpu_to_be32(uint32_t native) -{ - return CPU_TO_BE32(native); -} - -/** - * cpu_to_be16 - convert a uint16_t value to big endian. - * @native: value to convert - */ -static inline beint16_t cpu_to_be16(uint16_t native) -{ - return CPU_TO_BE16(native); -} - -/** - * be64_to_cpu - convert a big-endian uint64_t value - * @be_val: big-endian value to convert - */ -static inline uint64_t be64_to_cpu(beint64_t be_val) -{ - return BE64_TO_CPU(be_val); -} - -/** - * be32_to_cpu - convert a big-endian uint32_t value - * @be_val: big-endian value to convert - */ -static inline uint32_t be32_to_cpu(beint32_t be_val) -{ - return BE32_TO_CPU(be_val); -} - -/** - * be16_to_cpu - convert a big-endian uint16_t value - * @be_val: big-endian value to convert - */ -static inline uint16_t be16_to_cpu(beint16_t be_val) -{ - return BE16_TO_CPU(be_val); -} - -/* Whichever they include first, they get these definitions. */ -#ifdef CCAN_SHORT_TYPES_H -/** - * be64/be32/be16 - 64/32/16 bit big-endian representation. - */ -typedef beint64_t be64; -typedef beint32_t be32; -typedef beint16_t be16; - -/** - * le64/le32/le16 - 64/32/16 bit little-endian representation. - */ -typedef leint64_t le64; -typedef leint32_t le32; -typedef leint16_t le16; -#endif -#endif /* CCAN_ENDIAN_H */ |
