include/generic/unaligned-direct.h File Reference

Unaligned access using direct references. More...

#include <compiler.h>
#include <stdint.h>

Go to the source code of this file.

Defines
Reading and Writing Unaligned Big Endian Values
#define	read_unaligned_be16(ptr)   be16_to_cpu(read_unaligned_16(ptr))
	Read 16-bit Big Endian value from a possibly unaligned address.
#define	read_unaligned_be32(ptr)   be32_to_cpu(read_unaligned_32(ptr))
	Read 32-bit Big Endian value from a possibly unaligned address.
#define	write_unaligned_be16(ptr, value)   write_unaligned_16(ptr, cpu_to_be16(value))
	Write 16-bit Big Endian value to a possibly unaligned address.
#define	write_unaligned_be32(ptr, value)   write_unaligned_32(ptr, cpu_to_be32(value))
	Write 32-bit Big Endian value to a possibly unaligned address.
Reading and Writing Unaligned Little Endian Values
#define	read_unaligned_le16(ptr)   le16_to_cpu(read_unaligned_16(ptr))
	Read 16-bit Little Endian value from a possibly unaligned address.
#define	read_unaligned_le32(ptr)   le32_to_cpu(read_unaligned_32(ptr))
	Read 32-bit Little Endian value from a possibly unaligned address.
#define	write_unaligned_le16(ptr, value)   write_unaligned_16(ptr, cpu_to_le16(value))
	Write 16-bit Little Endian value to a possibly unaligned address.
#define	write_unaligned_le32(ptr, value)   write_unaligned_32(ptr, cpu_to_le32(value))
	Write 32-bit Little Endian value to a possibly unaligned address.
Functions
Reading and Writing Unaligned Native Endian Values
static __always_inline uint16_t	read_unaligned_16 (const void *ptr)
	Read 16-bit value from a possibly unaligned address.
static __always_inline uint32_t	read_unaligned_32 (const void *ptr)
	Read 32-bit value from a possibly unaligned address.
static __always_inline void	write_unaligned_16 (void *ptr, uint16_t value)
	Write 16-bit value to a possibly unaligned address.
static __always_inline void	write_unaligned_32 (void *ptr, uint32_t value)
	Write 32-bit value to a possibly unaligned address.

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Detailed Description

Unaligned access using direct references.

This implementation of the unaligned access helpers works on CPUs which can do unaligned access natively.

Copyright (C) 2009 Atmel Corporation. All rights reserved.

Definition in file unaligned-direct.h.