48 lines
1.5 KiB
C
48 lines
1.5 KiB
C
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/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* OpenRISC Linux
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*
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* Linux architectural port borrowing liberally from similar works of
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* others. All original copyrights apply as per the original source
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* declaration.
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*
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* OpenRISC implementation:
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* Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com>
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* Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
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* et al.
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*/
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#ifndef __ASM_OPENRISC_UNALIGNED_H
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#define __ASM_OPENRISC_UNALIGNED_H
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/*
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* This is copied from the generic implementation and the C-struct
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* variant replaced with the memmove variant. The GCC compiler
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* for the OR32 arch optimizes too aggressively for the C-struct
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* variant to work, so use the memmove variant instead.
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*
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* It may be worth considering implementing the unaligned access
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* exception handler and allowing unaligned accesses (access_ok.h)...
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* not sure if it would be much of a performance win without further
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* investigation.
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*/
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#include <asm/byteorder.h>
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#if defined(__LITTLE_ENDIAN)
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# include <linux/unaligned/le_memmove.h>
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# include <linux/unaligned/be_byteshift.h>
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# include <linux/unaligned/generic.h>
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# define get_unaligned __get_unaligned_le
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# define put_unaligned __put_unaligned_le
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#elif defined(__BIG_ENDIAN)
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# include <linux/unaligned/be_memmove.h>
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# include <linux/unaligned/le_byteshift.h>
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# include <linux/unaligned/generic.h>
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# define get_unaligned __get_unaligned_be
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# define put_unaligned __put_unaligned_be
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#else
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# error need to define endianess
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#endif
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#endif /* __ASM_OPENRISC_UNALIGNED_H */
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