utils: move endian swap helpers and __packed definition to utils.h

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
This commit is contained in:
Felix Fietkau 2013-02-11 21:46:41 +01:00
parent 4ab499899c
commit 5ad190fccf
2 changed files with 59 additions and 57 deletions

58
utils.h
View file

@ -63,4 +63,62 @@ void clock_gettime(int type, struct timespec *tv);
#endif
#if defined(__linux__) || defined(__CYGWIN__)
#include <byteswap.h>
#include <endian.h>
#elif defined(__APPLE__)
#include <machine/endian.h>
#include <machine/byte_order.h>
#define bswap_16(x) OSSwapInt16(x)
#define bswap_32(x) OSSwapInt32(x)
#define bswap_64(x) OSSwapInt64(x)
#elif defined(__FreeBSD__)
#include <sys/endian.h>
#define bswap_16(x) bswap16(x)
#define bswap_32(x) bswap32(x)
#define bswap_64(x) bswap64(x)
#else
#include <machine/endian.h>
#define bswap_16(x) swap16(x)
#define bswap_32(x) swap32(x)
#define bswap_64(x) swap64(x)
#endif
#ifndef __BYTE_ORDER
#define __BYTE_ORDER BYTE_ORDER
#endif
#ifndef __BIG_ENDIAN
#define __BIG_ENDIAN BIG_ENDIAN
#endif
#ifndef __LITTLE_ENDIAN
#define __LITTLE_ENDIAN LITTLE_ENDIAN
#endif
#if __BYTE_ORDER == __LITTLE_ENDIAN
#define cpu_to_be64(x) bswap_64(x)
#define cpu_to_be32(x) bswap_32(x)
#define cpu_to_be16(x) bswap_16(x)
#define be64_to_cpu(x) bswap_64(x)
#define be32_to_cpu(x) bswap_32(x)
#define be16_to_cpu(x) bswap_16(x)
#else
#define cpu_to_be64(x) (x)
#define cpu_to_be32(x) (x)
#define cpu_to_be16(x) (x)
#define be64_to_cpu(x) (x)
#define be32_to_cpu(x) (x)
#define be16_to_cpu(x) (x)
#endif
#ifndef __packed
#define __packed __attribute__((packed))
#endif
#endif