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/* ----------------------------------------------------------------------- *
*
* Copyright 2010-2019 Intel Corporation; author: H. Peter Anvin
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom
* the Software is furnished to do so, subject to the following
* conditions:
*
* The above copyright notice and this permission notice shall
* be included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
* ----------------------------------------------------------------------- */
/*
* bitops.h
*
* Simple bitwise operations
*/
#ifndef _BITOPS_H
#define _BITOPS_H
#include <klibc/compiler.h>
#if defined(__i386__) || defined(__x86_64__)
# include <x86/bitops.h>
#else
static inline void set_bit(long __bit, void *__bitmap)
{
char *__cp = (char *)__bitmap;
__cp[__bit >> 3] |= 1 << (__bit & 7);
}
static inline void clr_bit(long __bit, void *__bitmap)
{
char *__cp = (char *)__bitmap;
__cp[__bit >> 3] &= ~(1 << (__bit & 7));
}
static inline _Bool __purefunc test_bit(long __bit, const void *__bitmap)
{
const char *__cp = (char *)__bitmap;
return (__cp[__bit >> 3] >> (__bit & 7)) & 1;
}
#endif
#endif /* _BITOPS_H */
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