bc5da1a158
Align with native_simulator's upstream main d32b2504ad2b6d6d541bc71a0f9b16ab7b6a3831 Which includes: * d32b250 Minor format fix * 7b4f35b native HW counter: Provide new API to reset and control * 4f815cb INT CNTLR: Bugfix for more than 32 interrupts * 1d36254 Provide new 64 version of nsi_find_lsb_set Signed-off-by: Alberto Escolar Piedras <alberto.escolar.piedras@nordicsemi.no>
53 lines
1.3 KiB
C
53 lines
1.3 KiB
C
/*
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* Copyright (c) 2023 Nordic Semiconductor ASA
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#ifndef NSI_COMMON_SRC_NSI_INTERNAL_H
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#define NSI_COMMON_SRC_NSI_INTERNAL_H
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#include <stdint.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* @brief find least significant bit set in a 32-bit word
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*
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* This routine finds the first bit set starting from the least significant bit
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* in the argument passed in and returns the index of that bit. Bits are
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* numbered starting at 1 from the least significant bit. A return value of
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* zero indicates that the value passed is zero.
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*
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* @return least significant bit set, 0 if @a op is 0
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*/
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static inline unsigned int nsi_find_lsb_set(uint32_t op)
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{
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return __builtin_ffs(op);
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}
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/**
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* @brief find least significant bit set in a 64-bit word
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*
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* This routine finds the first bit set starting from the least significant bit
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* in the argument passed in and returns the index of that bit. Bits are
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* numbered starting at 1 from the least significant bit. A return value of
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* zero indicates that the value passed is zero.
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*
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* @return least significant bit set, 0 if @a op is 0
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*/
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static inline unsigned int nsi_find_lsb_set64(uint64_t op)
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{
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return __builtin_ffsll(op);
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}
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#ifdef __cplusplus
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}
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#endif
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#endif /* NSI_COMMON_SRC_NSI_INTERNAL_H */
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