threeeye
bc1d038eac
Squashed backup commit (no shallow-clone history issues) of xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2 branch, upstream commit 9eece662e) plus all fixes applied to get everpal_defconfig building clean against a modern (GCC 15.2.0) toolchain -- see the previous commit message on the lineage-23.2 branch (also in this repo history is not available here since this is a squashed snapshot; full incremental history lives in the local DL380 checkout and the upstream GitHub remote). Upstream: https://github.com/xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2)
45 lines
1.7 KiB
C
45 lines
1.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _ASM_GENERIC_BITOPS_CONST_HWEIGHT_H_
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#define _ASM_GENERIC_BITOPS_CONST_HWEIGHT_H_
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/*
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* Compile time versions of __arch_hweightN()
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*/
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#define __const_hweight8(w) \
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((unsigned int) \
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((!!((w) & (1ULL << 0))) + \
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(!!((w) & (1ULL << 1))) + \
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(!!((w) & (1ULL << 2))) + \
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(!!((w) & (1ULL << 3))) + \
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(!!((w) & (1ULL << 4))) + \
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(!!((w) & (1ULL << 5))) + \
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(!!((w) & (1ULL << 6))) + \
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(!!((w) & (1ULL << 7)))))
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#define __const_hweight16(w) (__const_hweight8(w) + __const_hweight8((w) >> 8 ))
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#define __const_hweight32(w) (__const_hweight16(w) + __const_hweight16((w) >> 16))
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#define __const_hweight64(w) (__const_hweight32(w) + __const_hweight32((w) >> 32))
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/*
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* Generic interface.
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*/
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#define hweight8(w) (__builtin_constant_p(w) ? __const_hweight8(w) : __arch_hweight8(w))
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#define hweight16(w) (__builtin_constant_p(w) ? __const_hweight16(w) : __arch_hweight16(w))
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#define hweight32(w) (__builtin_constant_p(w) ? __const_hweight32(w) : __arch_hweight32(w))
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#define hweight64(w) (__builtin_constant_p(w) ? __const_hweight64(w) : __arch_hweight64(w))
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/*
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* Interface for known constant arguments
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*/
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#define HWEIGHT8(w) (BUILD_BUG_ON_ZERO(!__builtin_constant_p(w)) + __const_hweight8(w))
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#define HWEIGHT16(w) (BUILD_BUG_ON_ZERO(!__builtin_constant_p(w)) + __const_hweight16(w))
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#define HWEIGHT32(w) (BUILD_BUG_ON_ZERO(!__builtin_constant_p(w)) + __const_hweight32(w))
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#define HWEIGHT64(w) (BUILD_BUG_ON_ZERO(!__builtin_constant_p(w)) + __const_hweight64(w))
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/*
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* Type invariant interface to the compile time constant hweight functions.
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*/
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#define HWEIGHT(w) HWEIGHT64((u64)w)
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#endif /* _ASM_GENERIC_BITOPS_CONST_HWEIGHT_H_ */
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