OpenCloudOS-Kernel/arch/openrisc/include/asm/bitops/ffs.h

/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
 * OpenRISC Linux
 *
 * Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
 */

#ifndef __ASM_OPENRISC_FFS_H
#define __ASM_OPENRISC_FFS_H

#ifdef CONFIG_OPENRISC_HAVE_INST_FF1

static inline int ffs(int x)
{
	int ret;

	__asm__ ("l.ff1 %0,%1"
		 : "=r" (ret)
		 : "r" (x));

	return ret;
}

#else
#include <asm-generic/bitops/ffs.h>
#endif

#endif /* __ASM_OPENRISC_FFS_H */
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 Based on 1 normalized pattern(s): 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 extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 3029 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 2019-05-27 14:55:01 +08:00			`/* SPDX-License-Identifier: GPL-2.0-or-later */`
OpenRISC: Headers Signed-off-by: Jonas Bonn <jonas@southpole.se> Reviewed-by: Arnd Bergmann <arnd@arndb.de> 2011-06-05 03:43:49 +08:00			`/*`
			`* OpenRISC Linux`
			`*`
			`* Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>`
			`*/`

			`#ifndef __ASM_OPENRISC_FFS_H`
			`#define __ASM_OPENRISC_FFS_H`

			`#ifdef CONFIG_OPENRISC_HAVE_INST_FF1`

			`static inline int ffs(int x)`
			`{`
			`int ret;`

			`__asm__ ("l.ff1 %0,%1"`
			`: "=r" (ret)`
			`: "r" (x));`

			`return ret;`
			`}`

			`#else`
			`#include <asm-generic/bitops/ffs.h>`
			`#endif`

			`#endif /* __ASM_OPENRISC_FFS_H */`