Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
80 lines
1.4 KiB
C
80 lines
1.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __ASM_CSKY_BITOPS_H
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#define __ASM_CSKY_BITOPS_H
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#include <linux/compiler.h>
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#include <asm/barrier.h>
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/*
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* asm-generic/bitops/ffs.h
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*/
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static inline __attribute_const__ int ffs(int x)
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{
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if (!x)
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return 0;
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asm volatile (
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"brev %0\n"
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"ff1 %0\n"
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"addi %0, 1\n"
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: "=&r"(x)
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: "0"(x));
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return x;
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}
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/*
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* asm-generic/bitops/__ffs.h
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*/
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static __always_inline __attribute_const__ unsigned long __ffs(unsigned long x)
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{
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asm volatile (
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"brev %0\n"
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"ff1 %0\n"
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: "=&r"(x)
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: "0"(x));
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return x;
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}
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/*
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* asm-generic/bitops/fls.h
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*/
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static __always_inline __attribute_const__ int fls(unsigned int x)
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{
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asm volatile(
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"ff1 %0\n"
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: "=&r"(x)
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: "0"(x));
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return (32 - x);
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}
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/*
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* asm-generic/bitops/__fls.h
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*/
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static __always_inline __attribute_const__ unsigned long __fls(unsigned long x)
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{
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return fls(x) - 1;
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}
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#include <asm-generic/bitops/ffz.h>
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#include <asm-generic/bitops/fls64.h>
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#ifndef _LINUX_BITOPS_H
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#error only <linux/bitops.h> can be included directly
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#endif
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#include <asm-generic/bitops/sched.h>
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#include <asm-generic/bitops/hweight.h>
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#include <asm-generic/bitops/lock.h>
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#include <asm-generic/bitops/atomic.h>
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/*
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* bug fix, why only could use atomic!!!!
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*/
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#include <asm-generic/bitops/non-atomic.h>
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#include <asm-generic/bitops/le.h>
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#include <asm-generic/bitops/ext2-atomic.h>
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#endif /* __ASM_CSKY_BITOPS_H */
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