https://github.com/torvalds/linux
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Tip revision: b953c0d234bc72e8489d3bf51a276c5c4ec85345 authored by Linus Torvalds on 22 June 2015, 05:05:43 UTC
Linux 4.1
Tip revision: b953c0d
unaligned.h
#ifndef __ASM_GENERIC_UNALIGNED_H
#define __ASM_GENERIC_UNALIGNED_H

/*
 * This is the most generic implementation of unaligned accesses
 * and should work almost anywhere.
 */
#include <asm/byteorder.h>

/* Set by the arch if it can handle unaligned accesses in hardware. */
#ifdef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS
# include <linux/unaligned/access_ok.h>
#endif

#if defined(__LITTLE_ENDIAN)
# ifndef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS
#  include <linux/unaligned/le_struct.h>
#  include <linux/unaligned/be_byteshift.h>
# endif
# include <linux/unaligned/generic.h>
# define get_unaligned	__get_unaligned_le
# define put_unaligned	__put_unaligned_le
#elif defined(__BIG_ENDIAN)
# ifndef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS
#  include <linux/unaligned/be_struct.h>
#  include <linux/unaligned/le_byteshift.h>
# endif
# include <linux/unaligned/generic.h>
# define get_unaligned	__get_unaligned_be
# define put_unaligned	__put_unaligned_be
#else
# error need to define endianess
#endif

#endif /* __ASM_GENERIC_UNALIGNED_H */
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