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https://github.com/cryb-to/cryb-to.git
synced 2024-12-24 21:41:08 +00:00
Implement the full range of BSD endianness conversion functions.
This commit is contained in:
Dag-Erling Smørgrav
Dag-Erling Smørgrav
parent
1ce9c07b8b
commit
d9b6740247
3 changed files with 305 additions and 1 deletions
23
configure.ac
23
configure.ac
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@ -20,6 +20,19 @@ AC_C_CONST
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AC_C_RESTRICT
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AC_C_VOLATILE
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AC_C_BIGENDIAN
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AC_TYPE_INT16_T
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AC_TYPE_INT32_T
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AC_TYPE_INT8_T
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AC_TYPE_INTMAX_T
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AC_TYPE_INTPTR_T
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AC_TYPE_OFF_T
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AC_TYPE_SIZE_T
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AC_TYPE_SSIZE_T
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AC_TYPE_UINT16_T
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AC_TYPE_UINT32_T
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AC_TYPE_UINT8_T
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AC_TYPE_UINTMAX_T
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AC_TYPE_UINTPTR_T
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# libtool
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LT_PREREQ([2.2.6])
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@ -34,10 +47,18 @@ AC_PROG_INSTALL
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#
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AC_CHECK_HEADERS([endian.h sys/endian.h])
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AX_GCC_BUILTIN([__builtin_bswap16])
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AX_GCC_BUILTIN([__builtin_bswap32])
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AX_GCC_BUILTIN([__builtin_bswap64])
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AC_CHECK_DECLS([
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bswap16, bswap32, bswap64,
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be16enc, be16dec, le16enc, le16dec,
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be32enc, be32dec, le32enc, le32dec,
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be64enc, be64dec, le64enc, le64dec
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be64enc, be64dec, le64enc, le64dec,
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htobe16, be16toh, htole16, le16toh,
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htobe32, be32toh, htole32, le32toh,
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htobe64, be64toh, htole64, le64toh,
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nothing
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], [], [], [[
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#if HAVE_SYS_ENDIAN_H
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#include <sys/endian.h>
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@ -1,5 +1,6 @@
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/*-
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* Copyright (c) 2014 Dag-Erling Smørgrav
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* Copyright (c) 2016 Universitetet i Oslo
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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@ -42,6 +43,15 @@
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#include <endian.h>
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#endif
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#if !HAVE_DECL_BSWAP16
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#define bswap16 cryb_bswap16
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#endif
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#if !HAVE_DECL_BSWAP32
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#define bswap32 cryb_bswap32
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#endif
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#if !HAVE_DECL_BSWAP64
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#define bswap64 cryb_bswap64
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#endif
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#if !HAVE_DECL_BE16ENC
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#define be16enc cryb_be16enc
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#endif
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@ -78,6 +88,83 @@
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#if !HAVE_DECL_LE64DEC
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#define le64dec cryb_le64dec
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#endif
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#if !HAVE_DECL_HTOBE16
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#define htobe16 cryb_htobe16
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#endif
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#if !HAVE_DECL_BE16TOH
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#define be16toh cryb_be16toh
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#endif
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#if !HAVE_DECL_HTOLE16
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#define htole16 cryb_htole16
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#endif
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#if !HAVE_DECL_LE16TOH
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#define le16toh cryb_le16toh
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#endif
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#if !HAVE_DECL_HTOBE32
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#define htobe32 cryb_htobe32
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#endif
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#if !HAVE_DECL_BE32TOH
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#define be32toh cryb_be32toh
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#endif
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#if !HAVE_DECL_HTOLE32
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#define htole32 cryb_htole32
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#endif
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#if !HAVE_DECL_LE32TOH
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#define le32toh cryb_le32toh
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#endif
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#if !HAVE_DECL_HTOBE64
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#define htobe64 cryb_htobe64
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#endif
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#if !HAVE_DECL_BE64TOH
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#define be64toh cryb_be64toh
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#endif
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#if !HAVE_DECL_HTOLE64
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#define htole64 cryb_htole64
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#endif
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#if !HAVE_DECL_LE64TOH
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#define le64toh cryb_le64toh
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#endif
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static inline uint16_t
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cryb_bswap16(uint16_t u16)
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{
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#if HAVE___BUILTIN_BSWAP16
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return (__builtin_bswap16(u16));
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#else
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return (((u16 & 0x00ffU) >> 0) << 8 |
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((u16 & 0xff00U) >> 8) << 0);
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#endif
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}
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static inline uint32_t
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cryb_bswap32(uint32_t u32)
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{
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#if HAVE___BUILTIN_BSWAP32
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return (__builtin_bswap32(u32));
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#else
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return (((u32 & 0x000000ffLU) >> 0) << 24 |
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((u32 & 0x0000ff00LU) >> 8) << 16 |
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((u32 & 0x00ff0000LU) >> 16) << 8 |
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((u32 & 0xff000000LU) >> 24) << 0);
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#endif
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}
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static inline uint64_t
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cryb_bswap64(uint64_t u64)
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{
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#if HAVE___BUILTIN_BSWAP64
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return (__builtin_bswap64(u64));
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#else
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return (((u64 & 0x00000000000000ffLLU) >> 0) << 56 |
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((u64 & 0x000000000000ff00LLU) >> 8) << 48 |
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((u64 & 0x0000000000ff0000LLU) >> 16) << 40 |
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((u64 & 0x00000000ff000000LLU) >> 24) << 32 |
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((u64 & 0x000000ff00000000LLU) >> 32) << 24 |
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((u64 & 0x0000ff0000000000LLU) >> 40) << 16 |
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((u64 & 0x00ff000000000000LLU) >> 48) << 8 |
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((u64 & 0xff00000000000000LLU) >> 56) << 0);
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#endif
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}
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static inline void
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cryb_be16enc(void *p, uint16_t u16)
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@ -195,4 +282,112 @@ cryb_le64dec(const void *p)
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(uint64_t)((const uint8_t *)p)[7] << 56);
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}
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static inline uint16_t
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cryb_htobe16(uint16_t u16)
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{
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#if !WORDS_BIGENDIAN
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u16 = cryb_bswap16(u16);
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#endif
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return (u16);
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}
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static inline uint16_t
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cryb_be16toh(uint16_t u16)
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{
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#if !WORDS_BIGENDIAN
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u16 = cryb_bswap16(u16);
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#endif
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return (u16);
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}
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static inline uint16_t
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cryb_htole16(uint16_t u16)
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{
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#if WORDS_BIGENDIAN
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u16 = cryb_bswap16(u16);
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#endif
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return (u16);
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}
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static inline uint16_t
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cryb_le16toh(uint16_t u16)
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{
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#if WORDS_BIGENDIAN
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u16 = cryb_bswap16(u16);
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#endif
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return (u16);
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}
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static inline uint32_t
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cryb_htobe32(uint32_t u32)
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{
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#if !WORDS_BIGENDIAN
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u32 = cryb_bswap32(u32);
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#endif
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return (u32);
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}
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static inline uint32_t
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cryb_be32toh(uint32_t u32)
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{
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#if !WORDS_BIGENDIAN
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u32 = cryb_bswap32(u32);
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#endif
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return (u32);
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}
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static inline uint32_t
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cryb_htole32(uint32_t u32)
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{
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#if WORDS_BIGENDIAN
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u32 = cryb_bswap32(u32);
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#endif
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return (u32);
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}
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static inline uint32_t
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cryb_le32toh(uint32_t u32)
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{
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#if WORDS_BIGENDIAN
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u32 = cryb_bswap32(u32);
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#endif
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return (u32);
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}
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static inline uint64_t
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cryb_htobe64(uint64_t u64)
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{
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#if !WORDS_BIGENDIAN
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u64 = cryb_bswap64(u64);
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#endif
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return (u64);
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}
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static inline uint64_t
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cryb_be64toh(uint64_t u64)
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{
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#if !WORDS_BIGENDIAN
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u64 = cryb_bswap64(u64);
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#endif
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return (u64);
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}
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static inline uint64_t
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cryb_htole64(uint64_t u64)
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{
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#if WORDS_BIGENDIAN
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u64 = cryb_bswap64(u64);
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#endif
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return (u64);
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}
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static inline uint64_t
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cryb_le64toh(uint64_t u64)
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{
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#if WORDS_BIGENDIAN
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u64 = cryb_bswap64(u64);
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#endif
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return (u64);
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}
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#endif
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88
t/t_endian.c
88
t/t_endian.c
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@ -35,6 +35,11 @@
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#include <stdio.h>
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#include <string.h>
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/* test our own code, not the compiler's */
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#undef HAVE___BUILTIN_BSWAP16
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#undef HAVE___BUILTIN_BSWAP32
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#undef HAVE___BUILTIN_BSWAP64
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#include <cryb/endian.h>
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#include <cryb/test.h>
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@ -45,10 +50,27 @@ static uint64_t be64 = 0xdeadbeefcafef001ULL;
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static uint16_t le16 = 0x01f0U;
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static uint32_t le32 = 0xefbeaddeUL;
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static uint64_t le64 = 0x01f0fecaefbeaddeULL;
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static uint16_t h16;
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static uint32_t h32;
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static uint64_t h64;
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static const void *s16 = "\xf0\x01";
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static const void *s32 = "\xde\xad\xbe\xef";
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static const void *s64 = "\xde\xad\xbe\xef\xca\xfe\xf0\x01";
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#define T_BSWAP(w) \
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static int \
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t_bswap##w(char **desc CRYB_UNUSED, void *arg CRYB_UNUSED) \
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{ \
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uint##w##_t swap; \
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\
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swap = cryb_bswap##w(be##w); \
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return (t_compare_x##w(le##w, swap)); \
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}
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T_BSWAP(16);
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T_BSWAP(32);
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T_BSWAP(64);
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#define T_DEC(e, w) \
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static int \
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t_##e##w##dec(char **desc CRYB_UNUSED, void *arg CRYB_UNUSED) \
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@ -83,15 +105,55 @@ T_ENC(le, 16)
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T_ENC(le, 32)
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T_ENC(le, 64)
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#define T_HTO(e, w) \
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static int \
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t_hto##e##w(char **desc CRYB_UNUSED, void *arg CRYB_UNUSED) \
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{ \
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uint##w##_t e; \
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\
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e = cryb_hto##e##w(h##w); \
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return (t_compare_x##w(e##w, e)); \
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}
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T_HTO(be, 16);
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T_HTO(be, 32);
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T_HTO(be, 64);
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T_HTO(le, 16);
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T_HTO(le, 32);
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T_HTO(le, 64);
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#define T_TOH(e, w) \
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static int \
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t_##e##w##toh(char **desc CRYB_UNUSED, void *arg CRYB_UNUSED) \
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{ \
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uint##w##_t h; \
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\
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h = cryb_##e##w##toh(e##w); \
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return (t_compare_x##w(h##w, h)); \
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}
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T_TOH(be, 16);
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T_TOH(be, 32);
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T_TOH(be, 64);
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T_TOH(le, 16);
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T_TOH(le, 32);
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T_TOH(le, 64);
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/***************************************************************************
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* Boilerplate
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*/
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#define T_BSWAP_ADD(w) \
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t_add_test(t_bswap##w, 0, "bswap" #w);
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#define T_DEC_ADD(e, w) \
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t_add_test(t_##e##w##dec, 0, #e #w "dec");
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#define T_ENC_ADD(e, w) \
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t_add_test(t_##e##w##enc, 0, #e #w "enc");
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#define T_HTO_ADD(e, w) \
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t_add_test(t_hto##e##w, 0, "hto" #e #w);
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#define T_TOH_ADD(e, w) \
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t_add_test(t_##e##w##toh, 0, #e #w "toh");
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static int
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t_prepare(int argc, char *argv[])
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@ -99,6 +161,20 @@ t_prepare(int argc, char *argv[])
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(void)argc;
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(void)argv;
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#if WORD_BIGENDIAN
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h16 = be16;
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h32 = be32;
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h64 = be64;
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#else
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h16 = le16;
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h32 = le32;
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h64 = le64;
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#endif
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T_BSWAP_ADD(16);
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T_BSWAP_ADD(32);
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T_BSWAP_ADD(64);
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T_DEC_ADD(be, 16);
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T_DEC_ADD(be, 32);
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T_DEC_ADD(be, 64);
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@ -111,6 +187,18 @@ t_prepare(int argc, char *argv[])
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T_ENC_ADD(le, 16);
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T_ENC_ADD(le, 32);
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T_ENC_ADD(le, 64);
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T_HTO_ADD(be, 16);
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T_HTO_ADD(be, 32);
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T_HTO_ADD(be, 64);
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T_HTO_ADD(le, 16);
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T_HTO_ADD(le, 32);
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T_HTO_ADD(le, 64);
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T_TOH_ADD(be, 16);
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T_TOH_ADD(be, 32);
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T_TOH_ADD(be, 64);
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T_TOH_ADD(le, 16);
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T_TOH_ADD(le, 32);
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T_TOH_ADD(le, 64);
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return (0);
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}
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