4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync/* $NetBSD: bswap.h,v 1.12 2006/05/22 16:28:27 drochner Exp $ */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync/* Written by Manuel Bouyer. Public domain */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#ifndef _SYS_BSWAP_H_
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#define _SYS_BSWAP_H_
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#ifndef _LOCORE
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#include <sys/EfiCdefs.h>
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#include <sys/types.h>
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#include <machine/bswap.h>
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync__BEGIN_DECLS
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync/* Always declare the functions in case their address is taken (etc) */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#if !defined(__BSWAP_RENAME)
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncuint16_t bswap16(uint16_t) __attribute__((__const__));
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncuint32_t bswap32(uint32_t) __attribute__((__const__));
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#else
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncuint16_t bswap16(uint16_t) __RENAME(__bswap16) __attribute__((__const__));
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncuint32_t bswap32(uint32_t) __RENAME(__bswap32) __attribute__((__const__));
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#endif
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncuint64_t bswap64(uint64_t) __attribute__((__const__));
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync__END_DECLS
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#if defined(__GNUC__) && defined(__OPTIMIZE__)
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync/* machine/byte_swap.h might have defined inline versions */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#ifndef __BYTE_SWAP_U64_VARIABLE
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#define __BYTE_SWAP_U64_VARIABLE bswap64
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#endif
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#ifndef __BYTE_SWAP_U32_VARIABLE
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#define __BYTE_SWAP_U32_VARIABLE bswap32
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#endif
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#ifndef __BYTE_SWAP_U16_VARIABLE
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#define __BYTE_SWAP_U16_VARIABLE bswap16
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#endif
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#define __byte_swap_u64_constant(x) \
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync ((uint64_t) \
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync ((((x) & 0xff00000000000000ull) >> 56) | \
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync (((x) & 0x00ff000000000000ull) >> 40) | \
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync (((x) & 0x0000ff0000000000ull) >> 24) | \
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync (((x) & 0x000000ff00000000ull) >> 8) | \
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync (((x) & 0x00000000ff000000ull) << 8) | \
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync (((x) & 0x0000000000ff0000ull) << 24) | \
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync (((x) & 0x000000000000ff00ull) << 40) | \
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync (((x) & 0x00000000000000ffull) << 56)))
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#define __byte_swap_u32_constant(x) \
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync ((((x) & 0xff000000) >> 24) | \
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync (((x) & 0x00ff0000) >> 8) | \
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync (((x) & 0x0000ff00) << 8) | \
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync (((x) & 0x000000ff) << 24))
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#define __byte_swap_u16_constant(x) \
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync ((((x) & 0xff00) >> 8) | \
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync (((x) & 0x00ff) << 8))
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#define bswap64(x) \
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync (__builtin_constant_p((x)) ? \
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync __byte_swap_u64_constant(x) : __BYTE_SWAP_U64_VARIABLE(x))
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#define bswap32(x) \
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync (__builtin_constant_p((x)) ? \
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync __byte_swap_u32_constant(x) : __BYTE_SWAP_U32_VARIABLE(x))
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#define bswap16(x) \
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync (__builtin_constant_p((x)) ? \
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync __byte_swap_u16_constant(x) : __BYTE_SWAP_U16_VARIABLE(x))
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#endif /* __GNUC__ && __OPTIMIZE__ */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#endif /* !_LOCORE */
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#endif /* !_SYS_BSWAP_H_ */