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Rewrite endian.h to utilise the new endian-specific integer types, for better type safety.

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Quinn
2026-01-22 12:21:49 +01:00
parent 44b3af2b46
commit 51dc8f85a6
3 changed files with 48 additions and 50 deletions
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62
include/mcaselector-lite/endian.h
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@@ -6,38 +6,36 @@
#ifndef MCASELECTOR_LITE_ENDIAN_H
#define MCASELECTOR_LITE_ENDIAN_H
#if defined(__GNUC__)
#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
#define le16toh(x) __uint16_identity(x)
#define le32toh(x) __uint32_identity(x)
#define le64toh(x) __uint64_identity(x)
#define htole16(x) __uint16_identity(x)
#define htole32(x) __uint32_identity(x)
#define htole64(x) __uint64_identity(x)
#define be16toh(x) __builtin_bswap16(x)
#define be32toh(x) __builtin_bswap32(x)
#define be64toh(x) __builtin_bswap64(x)
#define htobe16(x) __builtin_bswap16(x)
#define htobe32(x) __builtin_bswap32(x)
#define htobe64(x) __builtin_bswap64(x)
#elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
#define le16toh(x) __builtin_bswap16(x)
#define le32toh(x) __builtin_bswap32(x)
#define le64toh(x) __builtin_bswap64(x)
#define htole16(x) __builtin_bswap16(x)
#define htole32(x) __builtin_bswap32(x)
#define htole64(x) __builtin_bswap64(x)
#define be16toh(x) __uint16_identity(x)
#define be32toh(x) __uint32_identity(x)
#define be64toh(x) __uint64_identity(x)
#define htobe16(x) __uint16_identity(x)
#define htobe32(x) __uint32_identity(x)
#define htobe64(x) __uint64_identity(x)
#else
#error machine architecture unsupported! Expected either big-endian or little-endian, make sure to use a compiler which defines __BYTE_ORDER__ (like clang or gcc)
#endif /* byte order */
#include <mcaselector-lite/types.h>
#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
static inline u16 cvt_le16toh(le16 le) { return (u16)le; }
static inline u32 cvt_le32toh(le32 le) { return (u32)le; }
static inline u64 cvt_le64toh(le64 le) { return (u64)le; }
static inline le16 cvt_htole16(u16 u) { return (le16)u; }
static inline le32 cvt_htole32(u32 u) { return (le32)u; }
static inline le64 cvt_htole64(u64 u) { return (le64)u; }
static inline u16 cvt_be16toh(be16 be) { return __builtin_bswap16((u16)be); }
static inline u32 cvt_be32toh(be32 be) { return __builtin_bswap32((u32)be); }
static inline u64 cvt_be64toh(be64 be) { return __builtin_bswap64((u64)be); }
static inline be16 cvt_htobe16(u16 u) { return (be16)__builtin_bswap16(u); }
static inline be32 cvt_htobe32(u32 u) { return (be32)__builtin_bswap32(u); }
static inline be64 cvt_htobe64(u64 u) { return (be64)__builtin_bswap64(u); }
#elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
static inline u16 cvt_le16toh(le16 le) { return __builtin_bswap16((u16)le); }
static inline u32 cvt_le32toh(le32 le) { return __builtin_bswap32((u32)le); }
static inline u64 cvt_le64toh(le64 le) { return __builtin_bswap64((u64)le); }
static inline le16 cvt_htole16(u16 u) { return (le16)__builtin_bswap16(u); }
static inline le32 cvt_htole32(u32 u) { return (le32)__builtin_bswap32(u); }
static inline le64 cvt_htole64(u64 u) { return (le64)__builtin_bswap64(u); }
static inline u16 cvt_be16toh(be16 be) { return (u16)be; }
static inline u32 cvt_be32toh(be32 be) { return (u32)be; }
static inline u64 cvt_be64toh(be64 be) { return (u64)be; }
static inline be16 cvt_htobe16(u16 u) { return (be16)u; }
static inline be32 cvt_htobe32(u32 u) { return (be32)u; }
static inline be64 cvt_htobe64(u64 u) { return (be64)u; }
#else
#error GNU C is unavailable
#endif /* __GNUC__ */
#error "Machine architecture unsupported! Expected either big-endian or little-endian."
#endif
#endif /* MCASELECTOR_LITE_ENDIAN_H */