#ifndef BSWAP_H

#define BSWAP_H

#include "config-host.h"

#include <inttypes.h>

#ifdef HAVE_MACHINE_BSWAP_H

#include <sys/endian.h>

#include <sys/types.h>

#include <machine/bswap.h>

#else

#ifdef HAVE_BYTESWAP_H

#include <byteswap.h>

#else

#define bswap_16(x) \

({ \

	uint16_t __x = (x); \

	((uint16_t)( \

		(((uint16_t)(__x) & (uint16_t)0x00ffU) << 8) | \

		(((uint16_t)(__x) & (uint16_t)0xff00U) >> 8) )); \

})

#define bswap_32(x) \

({ \

	uint32_t __x = (x); \

	((uint32_t)( \

		(((uint32_t)(__x) & (uint32_t)0x000000ffUL) << 24) | \

		(((uint32_t)(__x) & (uint32_t)0x0000ff00UL) <<  8) | \

		(((uint32_t)(__x) & (uint32_t)0x00ff0000UL) >>  8) | \

		(((uint32_t)(__x) & (uint32_t)0xff000000UL) >> 24) )); \

})

#define bswap_64(x) \

({ \

	uint64_t __x = (x); \

	((uint64_t)( \

		(uint64_t)(((uint64_t)(__x) & (uint64_t)0x00000000000000ffULL) << 56) | \

		(uint64_t)(((uint64_t)(__x) & (uint64_t)0x000000000000ff00ULL) << 40) | \

		(uint64_t)(((uint64_t)(__x) & (uint64_t)0x0000000000ff0000ULL) << 24) | \

		(uint64_t)(((uint64_t)(__x) & (uint64_t)0x00000000ff000000ULL) <<  8) | \

	        (uint64_t)(((uint64_t)(__x) & (uint64_t)0x000000ff00000000ULL) >>  8) | \

		(uint64_t)(((uint64_t)(__x) & (uint64_t)0x0000ff0000000000ULL) >> 24) | \

		(uint64_t)(((uint64_t)(__x) & (uint64_t)0x00ff000000000000ULL) >> 40) | \

		(uint64_t)(((uint64_t)(__x) & (uint64_t)0xff00000000000000ULL) >> 56) )); \

})

#endif /* !HAVE_BYTESWAP_H */

static inline uint16_t bswap16(uint16_t x)

{

    return bswap_16(x);

}

static inline uint32_t bswap32(uint32_t x)

{

    return bswap_32(x);

}

static inline uint64_t bswap64(uint64_t x)

{

    return bswap_64(x);

}

#endif /* ! HAVE_MACHINE_BSWAP_H */

static inline void bswap16s(uint16_t *s)

{

    *s = bswap16(*s);

}

static inline void bswap32s(uint32_t *s)

{

    *s = bswap32(*s);

}

static inline void bswap64s(uint64_t *s)

{

    *s = bswap64(*s);

}

#if defined(WORDS_BIGENDIAN)

#define be_bswap(v, size) (v)

#define le_bswap(v, size) bswap ## size(v)

#define be_bswaps(v, size)

#define le_bswaps(p, size) *p = bswap ## size(*p);

#else

#define le_bswap(v, size) (v)

#define be_bswap(v, size) bswap ## size(v)

#define le_bswaps(v, size)

#define be_bswaps(p, size) *p = bswap ## size(*p);

#endif

#define CPU_CONVERT(endian, size, type)\

static inline type endian ## size ## _to_cpu(type v)\

{\

    return endian ## _bswap(v, size);\

}\

\

static inline type cpu_to_ ## endian ## size(type v)\

{\

    return endian ## _bswap(v, size);\

}\

\

static inline void endian ## size ## _to_cpus(type *p)\

{\

    endian ## _bswaps(p, size)\

}\

\

static inline void cpu_to_ ## endian ## size ## s(type *p)\

{\

    endian ## _bswaps(p, size)\

}\

\

static inline type endian ## size ## _to_cpup(const type *p)\

{\

    return endian ## size ## _to_cpu(*p);\

}\

\

static inline void cpu_to_ ## endian ## size ## w(type *p, type v)\

{\

     *p = cpu_to_ ## endian ## size(v);\

}

CPU_CONVERT(be, 16, uint16_t)

CPU_CONVERT(be, 32, uint32_t)

CPU_CONVERT(be, 64, uint64_t)

CPU_CONVERT(le, 16, uint16_t)

CPU_CONVERT(le, 32, uint32_t)

CPU_CONVERT(le, 64, uint64_t)

/* unaligned versions (optimized for frequent unaligned accesses)*/

#if defined(__i386__) || defined(__powerpc__)

#define cpu_to_le16wu(p, v) cpu_to_le16w(p, v)

#define cpu_to_le32wu(p, v) cpu_to_le32w(p, v)

#define le16_to_cpupu(p) le16_to_cpup(p)

#define le32_to_cpupu(p) le32_to_cpup(p)

#define be32_to_cpupu(p) be32_to_cpup(p)

#define cpu_to_be16wu(p, v) cpu_to_be16w(p, v)

#define cpu_to_be32wu(p, v) cpu_to_be32w(p, v)

#else

static inline void cpu_to_le16wu(uint16_t *p, uint16_t v)

{

    uint8_t *p1 = (uint8_t *)p;

    p1[0] = v;

    p1[1] = v >> 8;

}

static inline void cpu_to_le32wu(uint32_t *p, uint32_t v)

{

    uint8_t *p1 = (uint8_t *)p;

    p1[0] = v;

    p1[1] = v >> 8;

    p1[2] = v >> 16;

    p1[3] = v >> 24;

}

static inline uint16_t le16_to_cpupu(const uint16_t *p)

{

    const uint8_t *p1 = (const uint8_t *)p;

    return p1[0] | (p1[1] << 8);

}

static inline uint32_t le32_to_cpupu(const uint32_t *p)

{

    const uint8_t *p1 = (const uint8_t *)p;

    return p1[0] | (p1[1] << 8) | (p1[2] << 16) | (p1[3] << 24);

}

static inline uint32_t be32_to_cpupu(const uint32_t *p)

{

    const uint8_t *p1 = (const uint8_t *)p;

    return p1[3] | (p1[2] << 8) | (p1[1] << 16) | (p1[0] << 24);

}

static inline void cpu_to_be16wu(uint16_t *p, uint16_t v)

{

    uint8_t *p1 = (uint8_t *)p;

    p1[0] = v >> 8;

    p1[1] = v;

}

static inline void cpu_to_be32wu(uint32_t *p, uint32_t v)

{

    uint8_t *p1 = (uint8_t *)p;

    p1[0] = v >> 24;

    p1[1] = v >> 16;

    p1[2] = v >> 8;

    p1[3] = v;

}

#endif

#ifdef WORDS_BIGENDIAN

#define cpu_to_32wu cpu_to_be32wu

#else

#define cpu_to_32wu cpu_to_le32wu

#endif

#undef le_bswap

#undef be_bswap

#undef le_bswaps

#undef be_bswaps

#endif /* BSWAP_H */