44 lines
1.0 KiB
C
44 lines
1.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _ASM_SW64_WORD_AT_A_TIME_H
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#define _ASM_SW64_WORD_AT_A_TIME_H
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#include <asm/compiler.h>
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/*
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* word-at-a-time interface for SW64.
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*/
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/*
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* We do not use the word_at_a_time struct on SW64, but it needs to be
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* implemented to humour the generic code.
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*/
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struct word_at_a_time {
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const unsigned long unused;
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};
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#define WORD_AT_A_TIME_CONSTANTS { 0 }
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/* Return nonzero if val has a zero */
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static inline unsigned long has_zero(unsigned long val, unsigned long *bits, const struct word_at_a_time *c)
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{
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unsigned long zero_locations = __kernel_cmpgeb(0, val);
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*bits = zero_locations;
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return zero_locations;
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}
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static inline unsigned long prep_zero_mask(unsigned long val, unsigned long bits, const struct word_at_a_time *c)
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{
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return bits;
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}
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#define create_zero_mask(bits) (bits)
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static inline unsigned long find_zero(unsigned long bits)
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{
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return __kernel_cttz(bits);
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}
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#define zero_bytemask(mask) ((2ul << (find_zero(mask) * 8)) - 1)
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#endif /* _ASM_SW64_WORD_AT_A_TIME_H */
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