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add __BITMAP_TYPE

This commit is contained in:
christos 2012-12-07 02:27:58 +00:00
parent 9878d5e5c4
commit 8dc929e1a8
1 changed files with 13 additions and 9 deletions
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22
sys/sys/bitops.h
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@ -1,4 +1,4 @@
/* $NetBSD: bitops.h,v 1.10 2012/12/01 15:03:47 christos Exp $ */
/* $NetBSD: bitops.h,v 1.11 2012/12/07 02:27:58 christos Exp $ */
/*-
* Copyright (c) 2007, 2010 The NetBSD Foundation, Inc.
@ -294,31 +294,35 @@ fast_remainder32(uint32_t _v, uint32_t _div, uint32_t _m, uint8_t _s1,
return _v - _div * fast_divide32(_v, _div, _m, _s1, _s2);
}
#define __BITMAP_TYPE(__s, __t, __n) struct __s { \
__t _b[__BITMAP_SIZE(__t, __n)]; \
}
#define __BITMAP_BITS(__t) (sizeof(__t) * NBBY)
#define __BITMAP_SHIFT(__t) (ilog2(__BITMAP_BITS(__t)))
#define __BITMAP_MASK(__t) (__BITMAP_BITS(__t) - 1)
#define __BITMAP_SIZE(__t, __n) \
(((__n) + (__BITMAP_BITS(__t) - 1)) / __BITMAP_BITS(__t))
#define __BITMAP_BIT(__n, __v) \
(1 << ((__n) & __BITMAP_MASK(*__v)))
(1 << ((__n) & __BITMAP_MASK(*(__v)->_b)))
#define __BITMAP_WORD(__n, __v) \
((__n) >> __BITMAP_SHIFT(*__v))
((__n) >> __BITMAP_SHIFT(*(__v)->_b))
#define __BITMAP_SET(__n, __v) \
(__v[__BITMAP_WORD(__n, __v)] |= __BITMAP_BIT(__n, __v))
((__v)->_b[__BITMAP_WORD(__n, __v)] |= __BITMAP_BIT(__n, __v))
#define __BITMAP_CLR(__n, __v) \
(__v[__BITMAP_WORD(__n, __v)] &= ~__BITMAP_BIT(__n, __v))
((__v)->_b[__BITMAP_WORD(__n, __v)] &= ~__BITMAP_BIT(__n, __v))
#define __BITMAP_ISSET(__n, __v) \
(__v[__BITMAP_WORD(__n, __v)] & __BITMAP_BIT(__n, __v))
((__v)->_b[__BITMAP_WORD(__n, __v)] & __BITMAP_BIT(__n, __v))
#if __GNUC_PREREQ__(2, 95)
#define __BITMAP_ZERO(__v) \
(void)__builtin_memset((__v), 0, sizeof(__v))
(void)__builtin_memset((__v), 0, sizeof(*__v))
#else
#define __BITMAP_ZERO(__v) do { \
size_t __i; \
for (__i = 0; __i < __arraycount(__v); __i++) \
(__v)[__i] = 0; \
for (__i = 0; __i < __arraycount(__v->_b); __i++) \
(__v)->_b[__i] = 0; \
} while (/* CONSTCOND */ 0)
#endif /* GCC 2.95 */