1. 根目录:
2. arch
3. powerpc
4. include
5. asm
6. unaligned.h

#ifndef _ASM_POWERPC_UNALIGNED_H
#define _ASM_POWERPC_UNALIGNED_H

#ifdef __KERNEL__

/*
 * The PowerPC can do unaligned accesses itself in big endian mode.
 */
#include <linux/unaligned/access_ok.h>
#include <linux/unaligned/generic.h>

#define get_unaligned	__get_unaligned_be
#define put_unaligned	__put_unaligned_be

#endif	/* __KERNEL__ */
#endif	/* _ASM_POWERPC_UNALIGNED_H */