kernel_optimize_test/arch/openrisc/include/asm/unaligned.h
Jonas Bonn 58e0166a47 OpenRISC: Headers
Signed-off-by: Jonas Bonn <jonas@southpole.se>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
2011-07-22 18:46:39 +02:00

52 lines
1.7 KiB
C

/*
* OpenRISC Linux
*
* Linux architectural port borrowing liberally from similar works of
* others. All original copyrights apply as per the original source
* declaration.
*
* OpenRISC implementation:
* Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com>
* Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
* et al.
*
* This program 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.
*/
#ifndef __ASM_OPENRISC_UNALIGNED_H
#define __ASM_OPENRISC_UNALIGNED_H
/*
* This is copied from the generic implementation and the C-struct
* variant replaced with the memmove variant. The GCC compiler
* for the OR32 arch optimizes too aggressively for the C-struct
* variant to work, so use the memmove variant instead.
*
* It may be worth considering implementing the unaligned access
* exception handler and allowing unaligned accesses (access_ok.h)...
* not sure if it would be much of a performance win without further
* investigation.
*/
#include <asm/byteorder.h>
#if defined(__LITTLE_ENDIAN)
# include <linux/unaligned/le_memmove.h>
# include <linux/unaligned/be_byteshift.h>
# include <linux/unaligned/generic.h>
# define get_unaligned __get_unaligned_le
# define put_unaligned __put_unaligned_le
#elif defined(__BIG_ENDIAN)
# include <linux/unaligned/be_memmove.h>
# include <linux/unaligned/le_byteshift.h>
# 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_OPENRISC_UNALIGNED_H */