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musl/include/endian.h

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initial check-in, version 0.5.0
2011-02-12 05:22:29 +00:00
#ifndef _ENDIAN_H
#define _ENDIAN_H
#define __LITTLE_ENDIAN 1234
#define __BIG_ENDIAN 4321
#define __PDP_ENDIAN 3412
take byte order from gcc if gcc has defined it this only works with gcc 4.6 and later, but it allows us to support non-default endianness on archs like arm, mips, ppc, etc. that can do both without having separate header sets for both variants, and it saves one #include even on fixed-endianness archs like x86.
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#if defined(__GNUC__) && defined(__BYTE_ORDER__)
#define __BYTE_ORDER __BYTE_ORDER__
#else
initial check-in, version 0.5.0
2011-02-12 05:22:29 +00:00
#include <bits/endian.h>
take byte order from gcc if gcc has defined it this only works with gcc 4.6 and later, but it allows us to support non-default endianness on archs like arm, mips, ppc, etc. that can do both without having separate header sets for both variants, and it saves one #include even on fixed-endianness archs like x86.
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#endif
initial check-in, version 0.5.0
2011-02-12 05:22:29 +00:00
#if defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
add some ugly byte swapping cruft in endian.h
2012-04-22 15:08:01 +00:00
initial check-in, version 0.5.0
2011-02-12 05:22:29 +00:00
#define BIG_ENDIAN __BIG_ENDIAN
#define LITTLE_ENDIAN __LITTLE_ENDIAN
#define PDP_ENDIAN __PDP_ENDIAN
#define BYTE_ORDER __BYTE_ORDER
add some ugly byte swapping cruft in endian.h
2012-04-22 15:08:01 +00:00
#include <stdint.h>
uglify headers for the sake of junk that compiles with gcc -std=c89/-ansi
2012-05-04 02:27:36 +00:00
#if __STDC_VERSION__ >= 199901L
inline
#endif
static uint16_t __bswap16(uint16_t __x)
add some ugly byte swapping cruft in endian.h
2012-04-22 15:08:01 +00:00
{
return __x<<8 | __x>>8;
}
uglify headers for the sake of junk that compiles with gcc -std=c89/-ansi
2012-05-04 02:27:36 +00:00
#if __STDC_VERSION__ >= 199901L
inline
#endif
static uint32_t __bswap32(uint32_t __x)
add some ugly byte swapping cruft in endian.h
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{
return __x>>24 | __x>>8&0xff00 | __x<<8&0xff0000 | __x<<24;
}
uglify headers for the sake of junk that compiles with gcc -std=c89/-ansi
2012-05-04 02:27:36 +00:00
#if __STDC_VERSION__ >= 199901L
inline
#endif
static uint64_t __bswap64(uint64_t __x)
add some ugly byte swapping cruft in endian.h
2012-04-22 15:08:01 +00:00
{
fix breakage in endian.h
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return __bswap32(__x)+0ULL<<32 | __bswap32(__x>>32);
add some ugly byte swapping cruft in endian.h
2012-04-22 15:08:01 +00:00
}
#if __BYTE_ORDER == __LITTLE_ENDIAN
#define htobe16(x) __bswap16(x)
#define be16toh(x) __bswap16(x)
#define betoh16(x) __bswap16(x)
#define htobe32(x) __bswap32(x)
#define be32toh(x) __bswap32(x)
#define betoh32(x) __bswap32(x)
#define htobe64(x) __bswap64(x)
#define be64toh(x) __bswap64(x)
#define betoh64(x) __bswap64(x)
#define htole16(x) (uint16_t)(x)
#define le16toh(x) (uint16_t)(x)
#define letoh16(x) (uint16_t)(x)
#define htole32(x) (uint32_t)(x)
#define le32toh(x) (uint32_t)(x)
#define letoh32(x) (uint32_t)(x)
#define htole64(x) (uint64_t)(x)
#define le64toh(x) (uint64_t)(x)
#define letoh64(x) (uint64_t)(x)
#else
#define htobe16(x) (uint16_t)(x)
#define be16toh(x) (uint16_t)(x)
#define betoh16(x) (uint16_t)(x)
#define htobe32(x) (uint32_t)(x)
#define be32toh(x) (uint32_t)(x)
#define betoh32(x) (uint32_t)(x)
#define htobe64(x) (uint64_t)(x)
#define be64toh(x) (uint64_t)(x)
#define betoh64(x) (uint64_t)(x)
#define htole16(x) __bswap16(x)
#define le16toh(x) __bswap16(x)
#define letoh16(x) __bswap16(x)
#define htole32(x) __bswap32(x)
#define le32toh(x) __bswap32(x)
#define letoh32(x) __bswap32(x)
#define htole64(x) __bswap64(x)
#define le64toh(x) __bswap64(x)
#define letoh64(x) __bswap64(x)
#endif
initial check-in, version 0.5.0
2011-02-12 05:22:29 +00:00
#endif
#endif