25 lines
585 B
C
25 lines
585 B
C
#pragma once
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#include <kern/cdef.h>
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static inline uint8* bit_byte(void* base, uint32 bit)
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{
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return (uint8 *) ((uintptr) (base) + (bit & (~(sizeof(uint8) - 1))));
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}
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static inline uint8 bit_in_byte(uint32 bit)
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{
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return bit & (sizeof(uint8) - 1);
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}
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static inline uint8 bit_read(void *base, uint32 bit)
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{
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uint8* target = bit_byte(base, bit);
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return (uint8)((*target >> bit_in_byte(bit)) & 1);
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}
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static inline void bit_set(void *base, uint32 bit, uint8 val)
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{
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uint8* target = bit_byte(base, bit);
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*target = *target & (uint8)(~((val & 1) << bit_in_byte(bit)));
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}
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