Differential D14316 Diff 39175 tools/build/cross-build/include/mac/sys/endian.h

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tools/build/cross-build/include/mac/sys/endian.h

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				#pragma once

				#include <machine/endian.h>
				#include <stdint.h>

				/*
				* General byte order swapping functions.
				*/
				#define bswap16(x) __builtin_bswap16(x)
				#define bswap32(x) __builtin_bswap32(x)
				#define bswap64(x) __builtin_bswap64(x)

				#define _BYTE_ORDER __DARWIN_BYTE_ORDER
				#define _LITTLE_ENDIAN __DARWIN_LITTLE_ENDIAN
				#define _BIG_ENDIAN __DARWIN_BIG_ENDIAN
				/*
				* Host to big endian, host to little endian, big endian to host, and little
				* endian to host byte order functions as detailed in byteorder(9).
				*/
				#if _BYTE_ORDER == _LITTLE_ENDIAN
				#define htobe16(x) bswap16((x))
				#define htobe32(x) bswap32((x))
				#define htobe64(x) bswap64((x))
				#define htole16(x) ((uint16_t)(x))
				#define htole32(x) ((uint32_t)(x))
				#define htole64(x) ((uint64_t)(x))

				#define be16toh(x) bswap16((x))
				#define be32toh(x) bswap32((x))
				#define be64toh(x) bswap64((x))
				#define le16toh(x) ((uint16_t)(x))
				#define le32toh(x) ((uint32_t)(x))
				#define le64toh(x) ((uint64_t)(x))
				#else /* _BYTE_ORDER != _LITTLE_ENDIAN */
				#define htobe16(x) ((uint16_t)(x))
				#define htobe32(x) ((uint32_t)(x))
				#define htobe64(x) ((uint64_t)(x))
				#define htole16(x) bswap16((x))
				#define htole32(x) bswap32((x))
				#define htole64(x) bswap64((x))

				#define be16toh(x) ((uint16_t)(x))
				#define be32toh(x) ((uint32_t)(x))
				#define be64toh(x) ((uint64_t)(x))
				#define le16toh(x) bswap16((x))
				#define le32toh(x) bswap32((x))
				#define le64toh(x) bswap64((x))
				#endif /* _BYTE_ORDER == _LITTLE_ENDIAN */

				/* Alignment-agnostic encode/decode bytestream to/from little/big endian. */

				static __inline uint16_t
				be16dec(const void *pp)
				{
				uint8_t const p = (uint8_t const )pp;

				return ((p[0] << 8) \| p[1]);
				}

				static __inline uint32_t
				be32dec(const void *pp)
				{
				uint8_t const p = (uint8_t const )pp;

				return (((unsigned)p[0] << 24) \| (p[1] << 16) \| (p[2] << 8) \| p[3]);
				}

				static __inline uint64_t
				be64dec(const void *pp)
				{
				uint8_t const p = (uint8_t const )pp;

				return (((uint64_t)be32dec(p) << 32) \| be32dec(p + 4));
				}

				static __inline uint16_t
				le16dec(const void *pp)
				{
				uint8_t const p = (uint8_t const )pp;

				return ((p[1] << 8) \| p[0]);
				}

				static __inline uint32_t
				le32dec(const void *pp)
				{
				uint8_t const p = (uint8_t const )pp;

				return (((unsigned)p[3] << 24) \| (p[2] << 16) \| (p[1] << 8) \| p[0]);
				}

				static __inline uint64_t
				le64dec(const void *pp)
				{
				uint8_t const p = (uint8_t const )pp;

				return (((uint64_t)le32dec(p + 4) << 32) \| le32dec(p));
				}

				static __inline void
				be16enc(void *pp, uint16_t u)
				{
				uint8_t p = (uint8_t )pp;

				p[0] = (u >> 8) & 0xff;
				p[1] = u & 0xff;
				}

				static __inline void
				be32enc(void *pp, uint32_t u)
				{
				uint8_t p = (uint8_t )pp;

				p[0] = (u >> 24) & 0xff;
				p[1] = (u >> 16) & 0xff;
				p[2] = (u >> 8) & 0xff;
				p[3] = u & 0xff;
				}

				static __inline void
				be64enc(void *pp, uint64_t u)
				{
				uint8_t p = (uint8_t )pp;

				be32enc(p, (uint32_t)(u >> 32));
				be32enc(p + 4, (uint32_t)(u & 0xffffffffU));
				}

				static __inline void
				le16enc(void *pp, uint16_t u)
				{
				uint8_t p = (uint8_t )pp;

				p[0] = u & 0xff;
				p[1] = (u >> 8) & 0xff;
				}

				static __inline void
				le32enc(void *pp, uint32_t u)
				{
				uint8_t p = (uint8_t )pp;

				p[0] = u & 0xff;
				p[1] = (u >> 8) & 0xff;
				p[2] = (u >> 16) & 0xff;
				p[3] = (u >> 24) & 0xff;
				}

				static __inline void
				le64enc(void *pp, uint64_t u)
				{
				uint8_t p = (uint8_t )pp;

				le32enc(p, (uint32_t)(u & 0xffffffffU));
				le32enc(p + 4, (uint32_t)(u >> 32));
				}