Rename: include/endians.h -> include/ntfs/endians.h
(Logical change 1.280)edge.strict_endians
cantab.net!aia21
parent
7be2dcc70e
commit
c1e3dc03be
|
|
@ -0,0 +1,158 @@
|
|||
/*
|
||||
* endians.h - Definitions related to handling of byte ordering. Part of the
|
||||
* Linux-NTFS project.
|
||||
*
|
||||
* Copyright (c) 2000-2004 Anton Altaparmakov
|
||||
*
|
||||
* This program/include file is free software; you can redistribute it and/or
|
||||
* modify it under the terms of the GNU General Public License as published
|
||||
* by the Free Software Foundation; either version 2 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This program/include file is distributed in the hope that it will be
|
||||
* useful, but WITHOUT ANY WARRANTY; without even the implied warranty
|
||||
* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program (in the main directory of the Linux-NTFS
|
||||
* distribution in the file COPYING); if not, write to the Free Software
|
||||
* Foundation,Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
||||
*/
|
||||
|
||||
#ifndef _NTFS_ENDIANS_H
|
||||
#define _NTFS_ENDIANS_H
|
||||
|
||||
#include "config.h"
|
||||
|
||||
/*
|
||||
* Notes:
|
||||
*
|
||||
* We define the conversion functions including typecasts since the
|
||||
* defaults don't necessarily perform appropriate typecasts.
|
||||
* Also, using our own functions means that we can change them if it
|
||||
* turns out that we do need to use the unaligned access macros on
|
||||
* architectures requiring aligned memory accesses...
|
||||
*/
|
||||
|
||||
#ifdef HAVE_ENDIAN_H
|
||||
# include <endian.h>
|
||||
#endif
|
||||
#ifdef HAVE_SYS_ENDIAN_H
|
||||
# include <sys/endian.h>
|
||||
#endif
|
||||
#ifdef HAVE_MACHINE_ENDIAN_H
|
||||
# include <machine/endian.h>
|
||||
#endif
|
||||
#ifndef __BYTE_ORDER
|
||||
# ifdef _BYTE_ORDER
|
||||
# define __BYTE_ORDER _BYTE_ORDER
|
||||
# define __LITTLE_ENDIAN _LITTLE_ENDIAN
|
||||
# define __BIG_ENDIAN _BIG_ENDIAN
|
||||
# else
|
||||
# ifdef BYTE_ORDER
|
||||
# define __BYTE_ORDER BYTE_ORDER
|
||||
# define __LITTLE_ENDIAN LITTLE_ENDIAN
|
||||
# define __BIG_ENDIAN BIG_ENDIAN
|
||||
# endif
|
||||
# endif
|
||||
#endif
|
||||
#ifdef HAVE_BYTESWAP_H
|
||||
# include <byteswap.h>
|
||||
#endif
|
||||
|
||||
#if (__BYTE_ORDER == __LITTLE_ENDIAN)
|
||||
|
||||
#define __le16_to_cpu(x) (x)
|
||||
#define __le32_to_cpu(x) (x)
|
||||
#define __le64_to_cpu(x) (x)
|
||||
|
||||
#define __cpu_to_le16(x) (x)
|
||||
#define __cpu_to_le32(x) (x)
|
||||
#define __cpu_to_le64(x) (x)
|
||||
|
||||
#define __constant_le16_to_cpu(x) (x)
|
||||
#define __constant_le32_to_cpu(x) (x)
|
||||
#define __constant_le64_to_cpu(x) (x)
|
||||
|
||||
#define __constant_cpu_to_le16(x) (x)
|
||||
#define __constant_cpu_to_le32(x) (x)
|
||||
#define __constant_cpu_to_le64(x) (x)
|
||||
|
||||
#elif (__BYTE_ORDER == __BIG_ENDIAN)
|
||||
|
||||
#define __le16_to_cpu(x) bswap_16(x)
|
||||
#define __le32_to_cpu(x) bswap_32(x)
|
||||
#define __le64_to_cpu(x) bswap_64(x)
|
||||
|
||||
#define __cpu_to_le16(x) bswap_16(x)
|
||||
#define __cpu_to_le32(x) bswap_32(x)
|
||||
#define __cpu_to_le64(x) bswap_64(x)
|
||||
|
||||
#define __constant_le16_to_cpu(x) __bswap_constant_16(x)
|
||||
#define __constant_le32_to_cpu(x) __bswap_constant_32(x)
|
||||
#define __constant_le64_to_cpu(x) __bswap_constant_64(x)
|
||||
|
||||
#define __constant_cpu_to_le16(x) __bswap_constant_16(x)
|
||||
#define __constant_cpu_to_le32(x) __bswap_constant_32(x)
|
||||
#define __constant_cpu_to_le64(x) __bswap_constant_64(x)
|
||||
|
||||
#else
|
||||
|
||||
#error "You must define __BYTE_ORDER to be __LITTLE_ENDIAN or __BIG_ENDIAN"
|
||||
|
||||
#endif
|
||||
|
||||
/* Unsigned from LE to CPU conversion. */
|
||||
|
||||
#define le16_to_cpu(x) (u16)__le16_to_cpu((u16)(x))
|
||||
#define le32_to_cpu(x) (u32)__le32_to_cpu((u32)(x))
|
||||
#define le64_to_cpu(x) (u64)__le64_to_cpu((u64)(x))
|
||||
|
||||
#define le16_to_cpup(x) (u16)__le16_to_cpu(*(u16*)(x))
|
||||
#define le32_to_cpup(x) (u32)__le32_to_cpu(*(u32*)(x))
|
||||
#define le64_to_cpup(x) (u64)__le64_to_cpu(*(u64*)(x))
|
||||
|
||||
/* Signed from LE to CPU conversion. */
|
||||
|
||||
#define sle16_to_cpu(x) (s16)__le16_to_cpu((s16)(x))
|
||||
#define sle32_to_cpu(x) (s32)__le32_to_cpu((s32)(x))
|
||||
#define sle64_to_cpu(x) (s64)__le64_to_cpu((s64)(x))
|
||||
|
||||
#define sle16_to_cpup(x) (s16)__le16_to_cpu(*(s16*)(x))
|
||||
#define sle32_to_cpup(x) (s32)__le32_to_cpu(*(s32*)(x))
|
||||
#define sle64_to_cpup(x) (s64)__le64_to_cpu(*(s64*)(x))
|
||||
|
||||
/* Unsigned from CPU to LE conversion. */
|
||||
|
||||
#define cpu_to_le16(x) (u16)__cpu_to_le16((u16)(x))
|
||||
#define cpu_to_le32(x) (u32)__cpu_to_le32((u32)(x))
|
||||
#define cpu_to_le64(x) (u64)__cpu_to_le64((u64)(x))
|
||||
|
||||
#define cpu_to_le16p(x) (u16)__cpu_to_le16(*(u16*)(x))
|
||||
#define cpu_to_le32p(x) (u32)__cpu_to_le32(*(u32*)(x))
|
||||
#define cpu_to_le64p(x) (u64)__cpu_to_le64(*(u64*)(x))
|
||||
|
||||
/* Signed from CPU to LE conversion. */
|
||||
|
||||
#define scpu_to_le16(x) (s16)__cpu_to_le16((s16)(x))
|
||||
#define scpu_to_le32(x) (s32)__cpu_to_le32((s32)(x))
|
||||
#define scpu_to_le64(x) (s64)__cpu_to_le64((s64)(x))
|
||||
|
||||
#define scpu_to_le16p(x) (s16)__cpu_to_le16(*(s16*)(x))
|
||||
#define scpu_to_le32p(x) (s32)__cpu_to_le32(*(s32*)(x))
|
||||
#define scpu_to_le64p(x) (s64)__cpu_to_le64(*(s64*)(x))
|
||||
|
||||
/*
|
||||
* Constant endianness conversion defines.
|
||||
*/
|
||||
#define const_le16_to_cpu(x) __constant_le16_to_cpu(x)
|
||||
#define const_le32_to_cpu(x) __constant_le32_to_cpu(x)
|
||||
#define const_le64_to_cpu(x) __constant_le64_to_cpu(x)
|
||||
|
||||
#define const_cpu_to_le16(x) __constant_cpu_to_le16(x)
|
||||
#define const_cpu_to_le32(x) __constant_cpu_to_le32(x)
|
||||
#define const_cpu_to_le64(x) __constant_cpu_to_le64(x)
|
||||
|
||||
#endif /* defined _NTFS_ENDIANS_H */
|
||||
|
||||
Loading…
Reference in New Issue