Rich Felker
fb247fafa0
while musl itself requires a c99 compiler, some applications insist on being compiled with c89 compilers, and use of "inline" in the headers was breaking them. much of this had been avoided already by just skipping the inline keyword in pre-c99 compilers or modes, but this new unified solution is cleaner and may/should result in better code generation in the default gcc configuration.
85 lines
2.0 KiB
C
85 lines
2.0 KiB
C
#ifndef _ENDIAN_H
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#define _ENDIAN_H
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#if __STDC_VERSION__ >= 199901L || defined(__cplusplus)
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#define __inline inline
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#endif
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#define __LITTLE_ENDIAN 1234
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#define __BIG_ENDIAN 4321
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#define __PDP_ENDIAN 3412
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#if defined(__GNUC__) && defined(__BYTE_ORDER__)
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#define __BYTE_ORDER __BYTE_ORDER__
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#else
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#include <bits/endian.h>
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#endif
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#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
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#define BIG_ENDIAN __BIG_ENDIAN
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#define LITTLE_ENDIAN __LITTLE_ENDIAN
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#define PDP_ENDIAN __PDP_ENDIAN
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#define BYTE_ORDER __BYTE_ORDER
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#include <stdint.h>
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static __inline uint16_t __bswap16(uint16_t __x)
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{
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return __x<<8 | __x>>8;
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}
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static __inline uint32_t __bswap32(uint32_t __x)
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{
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return __x>>24 | __x>>8&0xff00 | __x<<8&0xff0000 | __x<<24;
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}
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static __inline uint64_t __bswap64(uint64_t __x)
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{
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return __bswap32(__x)+0ULL<<32 | __bswap32(__x>>32);
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}
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#if __BYTE_ORDER == __LITTLE_ENDIAN
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#define htobe16(x) __bswap16(x)
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#define be16toh(x) __bswap16(x)
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#define betoh16(x) __bswap16(x)
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#define htobe32(x) __bswap32(x)
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#define be32toh(x) __bswap32(x)
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#define betoh32(x) __bswap32(x)
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#define htobe64(x) __bswap64(x)
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#define be64toh(x) __bswap64(x)
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#define betoh64(x) __bswap64(x)
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#define htole16(x) (uint16_t)(x)
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#define le16toh(x) (uint16_t)(x)
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#define letoh16(x) (uint16_t)(x)
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#define htole32(x) (uint32_t)(x)
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#define le32toh(x) (uint32_t)(x)
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#define letoh32(x) (uint32_t)(x)
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#define htole64(x) (uint64_t)(x)
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#define le64toh(x) (uint64_t)(x)
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#define letoh64(x) (uint64_t)(x)
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#else
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#define htobe16(x) (uint16_t)(x)
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#define be16toh(x) (uint16_t)(x)
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#define betoh16(x) (uint16_t)(x)
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#define htobe32(x) (uint32_t)(x)
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#define be32toh(x) (uint32_t)(x)
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#define betoh32(x) (uint32_t)(x)
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#define htobe64(x) (uint64_t)(x)
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#define be64toh(x) (uint64_t)(x)
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#define betoh64(x) (uint64_t)(x)
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#define htole16(x) __bswap16(x)
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#define le16toh(x) __bswap16(x)
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#define letoh16(x) __bswap16(x)
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#define htole32(x) __bswap32(x)
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#define le32toh(x) __bswap32(x)
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#define letoh32(x) __bswap32(x)
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#define htole64(x) __bswap64(x)
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#define le64toh(x) __bswap64(x)
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#define letoh64(x) __bswap64(x)
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#endif
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#endif
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#endif
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