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49 lines
878 B
C
49 lines
878 B
C
/**
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* @file Bitwise.c
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* @author Sina Karvandi (sina@hyperdbg.org)
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* @brief Functions for bit-level operations
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*
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* @version 0.2
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* @date 2023-04-27
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*
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* @copyright This project is released under the GNU Public License v3.
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*
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*/
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#include "pch.h"
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/**
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* @brief Check whether the bit is set or not
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*
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* @param BitNumber
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* @param addr
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* @return int
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*/
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int
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TestBit(int BitNumber, unsigned long * addr)
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{
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return (BITMAP_ENTRY(BitNumber, addr) >> BITMAP_SHIFT(BitNumber)) & 1;
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}
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/**
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* @brief unset the bit
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*
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* @param BitNumber
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* @param addr
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*/
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void
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ClearBit(int BitNumber, unsigned long * addr)
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{
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BITMAP_ENTRY(BitNumber, addr) &= ~(1UL << BITMAP_SHIFT(BitNumber));
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}
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/**
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* @brief set the bit
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*
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* @param BitNumber
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* @param addr
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*/
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void
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SetBit(int BitNumber, unsigned long * addr)
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{
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BITMAP_ENTRY(BitNumber, addr) |= (1UL << BITMAP_SHIFT(BitNumber));
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}
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