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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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Thomas WeißschuhandArnd Bergmann
9b21aa9f03
UAPI headers are not supposed to leak references to kconfig symbols. They are undefined there in any case. As all actual definitions of this header are guarded behind a kconfig symbol, for userspace the header is always identical to its asm-generic variant. Make the custom UAPI header a kernel-internal one, so the leaks of kconfig symbols are fixed and userspace will instead use asm-generic/swab.h directly. Suggested-by: Arnd Bergmann <arnd@arndb.de> Link: https://lore.kernel.org/lkml/93c55086-931a-4282-a94c-de4954047fa9@app.fastmail.com/ Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
39 lines
995 B
C
39 lines
995 B
C
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
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/*
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* Copyright (C) 2012 Tobias Klauser <tklauser@distanz.ch>
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* Copyright (C) 2011 Pyramid Technical Consultants, Inc.
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*
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* This file is subject to the terms and conditions of the GNU General
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* Public License. See the file COPYING in the main directory of this
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* archive for more details.
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*/
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#ifndef _ASM_NIOS2_SWAB_H
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#define _ASM_NIOS2_SWAB_H
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#include <linux/types.h>
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#include <asm-generic/swab.h>
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#ifdef CONFIG_NIOS2_CI_SWAB_SUPPORT
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#ifdef __GNUC__
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#define __nios2_swab(x) \
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__builtin_custom_ini(CONFIG_NIOS2_CI_SWAB_NO, (x))
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static inline __attribute__((const)) __u16 __arch_swab16(__u16 x)
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{
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return (__u16) __nios2_swab(((__u32) x) << 16);
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}
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#define __arch_swab16 __arch_swab16
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static inline __attribute__((const)) __u32 __arch_swab32(__u32 x)
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{
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return (__u32) __nios2_swab(x);
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}
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#define __arch_swab32 __arch_swab32
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#endif /* __GNUC__ */
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#endif /* CONFIG_NIOS2_CI_SWAB_SUPPORT */
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#endif /* _ASM_NIOS2_SWAB_H */
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