1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /* 3 * OpenRISC Linux 4 * 5 * Linux architectural port borrowing liberally from similar works of 6 * others. All original copyrights apply as per the original source 7 * declaration. 8 * 9 * OpenRISC implementation: 10 * Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com> 11 * Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se> 12 * et al. 13 */ 14 15 #ifndef __ASM_OPENRISC_UNALIGNED_H 16 #define __ASM_OPENRISC_UNALIGNED_H 17 18 /* 19 * This is copied from the generic implementation and the C-struct 20 * variant replaced with the memmove variant. The GCC compiler 21 * for the OR32 arch optimizes too aggressively for the C-struct 22 * variant to work, so use the memmove variant instead. 23 * 24 * It may be worth considering implementing the unaligned access 25 * exception handler and allowing unaligned accesses (access_ok.h)... 26 * not sure if it would be much of a performance win without further 27 * investigation. 28 */ 29 #include <asm/byteorder.h> 30 31 #if defined(__LITTLE_ENDIAN) 32 # include <linux/unaligned/le_memmove.h> 33 # include <linux/unaligned/be_byteshift.h> 34 # include <linux/unaligned/generic.h> 35 # define get_unaligned __get_unaligned_le 36 # define put_unaligned __put_unaligned_le 37 #elif defined(__BIG_ENDIAN) 38 # include <linux/unaligned/be_memmove.h> 39 # include <linux/unaligned/le_byteshift.h> 40 # include <linux/unaligned/generic.h> 41 # define get_unaligned __get_unaligned_be 42 # define put_unaligned __put_unaligned_be 43 #else 44 # error need to define endianess 45 #endif 46 47 #endif /* __ASM_OPENRISC_UNALIGNED_H */