author | Florian Westphal <fw@strlen.de> |
Thu, 09 Apr 2009 12:07:21 +0200 | |
changeset 2 | d1f6d8b6f81c |
parent 0 | aa628870c1d3 |
permissions | -rw-r--r-- |
0
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Port of Linux 2.6.28 for use with network simulation cradle.
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#ifndef __LINUX_BITMAP_H |
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#define __LINUX_BITMAP_H |
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|
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#ifndef __ASSEMBLY__ |
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|
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#include <linux/types.h> |
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#include <linux/bitops.h> |
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#include <linux/string.h> |
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#include <linux/kernel.h> |
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|
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/* |
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* bitmaps provide bit arrays that consume one or more unsigned |
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* longs. The bitmap interface and available operations are listed |
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* here, in bitmap.h |
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* |
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* Function implementations generic to all architectures are in |
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* lib/bitmap.c. Functions implementations that are architecture |
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* specific are in various include/asm-<arch>/bitops.h headers |
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* and other arch/<arch> specific files. |
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* |
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* See lib/bitmap.c for more details. |
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*/ |
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/* |
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* The available bitmap operations and their rough meaning in the |
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* case that the bitmap is a single unsigned long are thus: |
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* |
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* Note that nbits should be always a compile time evaluable constant. |
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* Otherwise many inlines will generate horrible code. |
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* |
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* bitmap_zero(dst, nbits) *dst = 0UL |
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* bitmap_fill(dst, nbits) *dst = ~0UL |
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* bitmap_copy(dst, src, nbits) *dst = *src |
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* bitmap_and(dst, src1, src2, nbits) *dst = *src1 & *src2 |
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* bitmap_or(dst, src1, src2, nbits) *dst = *src1 | *src2 |
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* bitmap_xor(dst, src1, src2, nbits) *dst = *src1 ^ *src2 |
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* bitmap_andnot(dst, src1, src2, nbits) *dst = *src1 & ~(*src2) |
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* bitmap_complement(dst, src, nbits) *dst = ~(*src) |
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* bitmap_equal(src1, src2, nbits) Are *src1 and *src2 equal? |
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* bitmap_intersects(src1, src2, nbits) Do *src1 and *src2 overlap? |
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* bitmap_subset(src1, src2, nbits) Is *src1 a subset of *src2? |
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* bitmap_empty(src, nbits) Are all bits zero in *src? |
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* bitmap_full(src, nbits) Are all bits set in *src? |
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* bitmap_weight(src, nbits) Hamming Weight: number set bits |
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* bitmap_shift_right(dst, src, n, nbits) *dst = *src >> n |
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* bitmap_shift_left(dst, src, n, nbits) *dst = *src << n |
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* bitmap_remap(dst, src, old, new, nbits) *dst = map(old, new)(src) |
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* bitmap_bitremap(oldbit, old, new, nbits) newbit = map(old, new)(oldbit) |
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* bitmap_onto(dst, orig, relmap, nbits) *dst = orig relative to relmap |
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* bitmap_fold(dst, orig, sz, nbits) dst bits = orig bits mod sz |
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* bitmap_scnprintf(buf, len, src, nbits) Print bitmap src to buf |
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* bitmap_parse(buf, buflen, dst, nbits) Parse bitmap dst from kernel buf |
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* bitmap_parse_user(ubuf, ulen, dst, nbits) Parse bitmap dst from user buf |
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* bitmap_scnlistprintf(buf, len, src, nbits) Print bitmap src as list to buf |
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* bitmap_parselist(buf, dst, nbits) Parse bitmap dst from list |
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* bitmap_find_free_region(bitmap, bits, order) Find and allocate bit region |
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* bitmap_release_region(bitmap, pos, order) Free specified bit region |
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* bitmap_allocate_region(bitmap, pos, order) Allocate specified bit region |
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*/ |
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/* |
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* Also the following operations in asm/bitops.h apply to bitmaps. |
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* |
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* set_bit(bit, addr) *addr |= bit |
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* clear_bit(bit, addr) *addr &= ~bit |
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* change_bit(bit, addr) *addr ^= bit |
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* test_bit(bit, addr) Is bit set in *addr? |
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* test_and_set_bit(bit, addr) Set bit and return old value |
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* test_and_clear_bit(bit, addr) Clear bit and return old value |
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* test_and_change_bit(bit, addr) Change bit and return old value |
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* find_first_zero_bit(addr, nbits) Position first zero bit in *addr |
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* find_first_bit(addr, nbits) Position first set bit in *addr |
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* find_next_zero_bit(addr, nbits, bit) Position next zero bit in *addr >= bit |
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* find_next_bit(addr, nbits, bit) Position next set bit in *addr >= bit |
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*/ |
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|
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/* |
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* The DECLARE_BITMAP(name,bits) macro, in linux/types.h, can be used |
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* to declare an array named 'name' of just enough unsigned longs to |
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* contain all bit positions from 0 to 'bits' - 1. |
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*/ |
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|
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/* |
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* lib/bitmap.c provides these functions: |
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*/ |
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|
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extern int __bitmap_empty(const unsigned long *bitmap, int bits); |
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extern int __bitmap_full(const unsigned long *bitmap, int bits); |
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extern int __bitmap_equal(const unsigned long *bitmap1, |
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const unsigned long *bitmap2, int bits); |
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extern void __bitmap_complement(unsigned long *dst, const unsigned long *src, |
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int bits); |
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extern void __bitmap_shift_right(unsigned long *dst, |
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const unsigned long *src, int shift, int bits); |
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extern void __bitmap_shift_left(unsigned long *dst, |
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const unsigned long *src, int shift, int bits); |
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extern void __bitmap_and(unsigned long *dst, const unsigned long *bitmap1, |
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const unsigned long *bitmap2, int bits); |
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extern void __bitmap_or(unsigned long *dst, const unsigned long *bitmap1, |
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const unsigned long *bitmap2, int bits); |
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extern void __bitmap_xor(unsigned long *dst, const unsigned long *bitmap1, |
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const unsigned long *bitmap2, int bits); |
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extern void __bitmap_andnot(unsigned long *dst, const unsigned long *bitmap1, |
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const unsigned long *bitmap2, int bits); |
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extern int __bitmap_intersects(const unsigned long *bitmap1, |
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const unsigned long *bitmap2, int bits); |
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Port of Linux 2.6.28 for use with network simulation cradle.
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parents:
diff
changeset
|
107 |
extern int __bitmap_subset(const unsigned long *bitmap1, |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
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parents:
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changeset
|
108 |
const unsigned long *bitmap2, int bits); |
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Port of Linux 2.6.28 for use with network simulation cradle.
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parents:
diff
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|
109 |
extern int __bitmap_weight(const unsigned long *bitmap, int bits); |
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Port of Linux 2.6.28 for use with network simulation cradle.
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parents:
diff
changeset
|
110 |
|
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Port of Linux 2.6.28 for use with network simulation cradle.
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parents:
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|
111 |
extern int bitmap_scnprintf(char *buf, unsigned int len, |
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Port of Linux 2.6.28 for use with network simulation cradle.
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parents:
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|
112 |
const unsigned long *src, int nbits); |
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Port of Linux 2.6.28 for use with network simulation cradle.
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parents:
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|
113 |
extern int __bitmap_parse(const char *buf, unsigned int buflen, int is_user, |
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Port of Linux 2.6.28 for use with network simulation cradle.
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parents:
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|
114 |
unsigned long *dst, int nbits); |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
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parents:
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|
115 |
extern int bitmap_parse_user(const char __user *ubuf, unsigned int ulen, |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
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parents:
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|
116 |
unsigned long *dst, int nbits); |
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Port of Linux 2.6.28 for use with network simulation cradle.
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parents:
diff
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|
117 |
extern int bitmap_scnlistprintf(char *buf, unsigned int len, |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
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parents:
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|
118 |
const unsigned long *src, int nbits); |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
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parents:
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|
119 |
extern int bitmap_parselist(const char *buf, unsigned long *maskp, |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
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parents:
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|
120 |
int nmaskbits); |
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Port of Linux 2.6.28 for use with network simulation cradle.
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|
121 |
extern void bitmap_remap(unsigned long *dst, const unsigned long *src, |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
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parents:
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|
122 |
const unsigned long *old, const unsigned long *new, int bits); |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
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parents:
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|
123 |
extern int bitmap_bitremap(int oldbit, |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
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parents:
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|
124 |
const unsigned long *old, const unsigned long *new, int bits); |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
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parents:
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|
125 |
extern void bitmap_onto(unsigned long *dst, const unsigned long *orig, |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
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parents:
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|
126 |
const unsigned long *relmap, int bits); |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
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|
127 |
extern void bitmap_fold(unsigned long *dst, const unsigned long *orig, |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
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|
128 |
int sz, int bits); |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
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|
129 |
extern int bitmap_find_free_region(unsigned long *bitmap, int bits, int order); |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
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parents:
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|
130 |
extern void bitmap_release_region(unsigned long *bitmap, int pos, int order); |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
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|
131 |
extern int bitmap_allocate_region(unsigned long *bitmap, int pos, int order); |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
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|
132 |
extern void bitmap_copy_le(void *dst, const unsigned long *src, int nbits); |
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Port of Linux 2.6.28 for use with network simulation cradle.
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|
133 |
|
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Port of Linux 2.6.28 for use with network simulation cradle.
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parents:
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|
134 |
#define BITMAP_LAST_WORD_MASK(nbits) \ |
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Port of Linux 2.6.28 for use with network simulation cradle.
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parents:
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|
135 |
( \ |
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Port of Linux 2.6.28 for use with network simulation cradle.
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|
136 |
((nbits) % BITS_PER_LONG) ? \ |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
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|
137 |
(1UL<<((nbits) % BITS_PER_LONG))-1 : ~0UL \ |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
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parents:
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|
138 |
) |
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Port of Linux 2.6.28 for use with network simulation cradle.
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parents:
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|
139 |
|
2 | 140 |
#define small_const_nbits(nbits) \ |
141 |
(__builtin_constant_p(nbits) && (nbits) <= BITS_PER_LONG) |
|
142 |
||
0
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Port of Linux 2.6.28 for use with network simulation cradle.
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|
143 |
static inline void bitmap_zero(unsigned long *dst, int nbits) |
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Port of Linux 2.6.28 for use with network simulation cradle.
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parents:
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|
144 |
{ |
2 | 145 |
if (small_const_nbits(nbits)) |
0
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Port of Linux 2.6.28 for use with network simulation cradle.
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parents:
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|
146 |
*dst = 0UL; |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
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parents:
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|
147 |
else { |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
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parents:
diff
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|
148 |
int len = BITS_TO_LONGS(nbits) * sizeof(unsigned long); |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
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parents:
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|
149 |
memset(dst, 0, len); |
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Port of Linux 2.6.28 for use with network simulation cradle.
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parents:
diff
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|
150 |
} |
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Port of Linux 2.6.28 for use with network simulation cradle.
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parents:
diff
changeset
|
151 |
} |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
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parents:
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changeset
|
152 |
|
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Port of Linux 2.6.28 for use with network simulation cradle.
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parents:
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|
153 |
static inline void bitmap_fill(unsigned long *dst, int nbits) |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
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parents:
diff
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|
154 |
{ |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
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parents:
diff
changeset
|
155 |
size_t nlongs = BITS_TO_LONGS(nbits); |
2 | 156 |
if (!small_const_nbits(nbits)) { |
0
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
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parents:
diff
changeset
|
157 |
int len = (nlongs - 1) * sizeof(unsigned long); |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
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parents:
diff
changeset
|
158 |
memset(dst, 0xff, len); |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
159 |
} |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
160 |
dst[nlongs - 1] = BITMAP_LAST_WORD_MASK(nbits); |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
161 |
} |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
162 |
|
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
163 |
static inline void bitmap_copy(unsigned long *dst, const unsigned long *src, |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
164 |
int nbits) |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
165 |
{ |
2 | 166 |
if (small_const_nbits(nbits)) |
0
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
167 |
*dst = *src; |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
168 |
else { |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
169 |
int len = BITS_TO_LONGS(nbits) * sizeof(unsigned long); |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
170 |
memcpy(dst, src, len); |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
171 |
} |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
172 |
} |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
173 |
|
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
174 |
static inline void bitmap_and(unsigned long *dst, const unsigned long *src1, |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
175 |
const unsigned long *src2, int nbits) |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
176 |
{ |
2 | 177 |
if (small_const_nbits(nbits)) |
0
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
178 |
*dst = *src1 & *src2; |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
179 |
else |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
180 |
__bitmap_and(dst, src1, src2, nbits); |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
181 |
} |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
182 |
|
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
183 |
static inline void bitmap_or(unsigned long *dst, const unsigned long *src1, |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
184 |
const unsigned long *src2, int nbits) |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
185 |
{ |
2 | 186 |
if (small_const_nbits(nbits)) |
0
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
187 |
*dst = *src1 | *src2; |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
188 |
else |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
189 |
__bitmap_or(dst, src1, src2, nbits); |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
190 |
} |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
191 |
|
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
192 |
static inline void bitmap_xor(unsigned long *dst, const unsigned long *src1, |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
193 |
const unsigned long *src2, int nbits) |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
194 |
{ |
2 | 195 |
if (small_const_nbits(nbits)) |
0
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
196 |
*dst = *src1 ^ *src2; |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
197 |
else |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
198 |
__bitmap_xor(dst, src1, src2, nbits); |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
199 |
} |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
200 |
|
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
201 |
static inline void bitmap_andnot(unsigned long *dst, const unsigned long *src1, |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
202 |
const unsigned long *src2, int nbits) |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
203 |
{ |
2 | 204 |
if (small_const_nbits(nbits)) |
0
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
205 |
*dst = *src1 & ~(*src2); |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
206 |
else |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
207 |
__bitmap_andnot(dst, src1, src2, nbits); |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
208 |
} |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
209 |
|
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
210 |
static inline void bitmap_complement(unsigned long *dst, const unsigned long *src, |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
211 |
int nbits) |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
212 |
{ |
2 | 213 |
if (small_const_nbits(nbits)) |
0
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
214 |
*dst = ~(*src) & BITMAP_LAST_WORD_MASK(nbits); |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
215 |
else |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
216 |
__bitmap_complement(dst, src, nbits); |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
217 |
} |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
218 |
|
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
219 |
static inline int bitmap_equal(const unsigned long *src1, |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
220 |
const unsigned long *src2, int nbits) |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
221 |
{ |
2 | 222 |
if (small_const_nbits(nbits)) |
0
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
223 |
return ! ((*src1 ^ *src2) & BITMAP_LAST_WORD_MASK(nbits)); |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
224 |
else |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
225 |
return __bitmap_equal(src1, src2, nbits); |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
226 |
} |
aa628870c1d3
Port of Linux 2.6.28 for use with network simulation cradle.
Florian Westphal <fw@strlen.de>
parents:
diff
changeset
|
227 |
|
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static inline int bitmap_intersects(const unsigned long *src1, |
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const unsigned long *src2, int nbits) |
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{ |
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if (small_const_nbits(nbits)) |
0
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return ((*src1 & *src2) & BITMAP_LAST_WORD_MASK(nbits)) != 0; |
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else |
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return __bitmap_intersects(src1, src2, nbits); |
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} |
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|
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static inline int bitmap_subset(const unsigned long *src1, |
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const unsigned long *src2, int nbits) |
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{ |
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if (small_const_nbits(nbits)) |
0
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return ! ((*src1 & ~(*src2)) & BITMAP_LAST_WORD_MASK(nbits)); |
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else |
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return __bitmap_subset(src1, src2, nbits); |
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} |
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static inline int bitmap_empty(const unsigned long *src, int nbits) |
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{ |
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if (small_const_nbits(nbits)) |
0
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return ! (*src & BITMAP_LAST_WORD_MASK(nbits)); |
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else |
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return __bitmap_empty(src, nbits); |
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} |
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static inline int bitmap_full(const unsigned long *src, int nbits) |
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{ |
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if (small_const_nbits(nbits)) |
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return ! (~(*src) & BITMAP_LAST_WORD_MASK(nbits)); |
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else |
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return __bitmap_full(src, nbits); |
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} |
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|
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static inline int bitmap_weight(const unsigned long *src, int nbits) |
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{ |
2 | 264 |
if (small_const_nbits(nbits)) |
0
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return hweight_long(*src & BITMAP_LAST_WORD_MASK(nbits)); |
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return __bitmap_weight(src, nbits); |
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} |
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|
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static inline void bitmap_shift_right(unsigned long *dst, |
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const unsigned long *src, int n, int nbits) |
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{ |
2 | 272 |
if (small_const_nbits(nbits)) |
0
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*dst = *src >> n; |
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else |
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__bitmap_shift_right(dst, src, n, nbits); |
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} |
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|
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static inline void bitmap_shift_left(unsigned long *dst, |
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const unsigned long *src, int n, int nbits) |
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{ |
2 | 281 |
if (small_const_nbits(nbits)) |
0
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*dst = (*src << n) & BITMAP_LAST_WORD_MASK(nbits); |
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else |
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__bitmap_shift_left(dst, src, n, nbits); |
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} |
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|
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static inline int bitmap_parse(const char *buf, unsigned int buflen, |
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unsigned long *maskp, int nmaskbits) |
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{ |
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return __bitmap_parse(buf, buflen, 0, maskp, nmaskbits); |
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} |
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|
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#endif /* __ASSEMBLY__ */ |
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|
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#endif /* __LINUX_BITMAP_H */ |