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/*
 * Copyright 1992, Linus Torvalds.
 * Copyright 2010 Tilera Corporation. All Rights Reserved.
 *
 *   This program is free software; you can redistribute it and/or
 *   modify it under the terms of the GNU General Public License
 *   as published by the Free Software Foundation, version 2.
 *
 *   This program is distributed in the hope that it will be useful, but
 *   WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
 *   NON INFRINGEMENT.  See the GNU General Public License for
 *   more details.
 */

#ifndef _ASM_TILE_BITOPS_H
#define _ASM_TILE_BITOPS_H

#include <linux/types.h>
#include <asm/barrier.h>

#ifndef _LINUX_BITOPS_H
#error only <linux/bitops.h> can be included directly
#endif

#ifdef __tilegx__
#include <asm/bitops_64.h>
#else
#include <asm/bitops_32.h>
#endif

/**
 * ffz - find first zero bit in word
 * @word: The word to search
 *
 * Undefined if no zero exists, so code should check against ~0UL first.
 */
static inline unsigned long ffz(unsigned long word)
{
	return __builtin_ctzl(~word);
}

static inline int fls64(__u64 w)
{
	return (sizeof(__u64) * 8) - __builtin_clzll(w);
}

/**
 * fls - find last set bit in word
 * @x: the word to search
 *
 * This is defined in a similar way as the libc and compiler builtin
 * ffs, but returns the position of the most significant set bit.
 *
 * fls(value) returns 0 if value is 0 or the position of the last
 * set bit if value is nonzero. The last (most significant) bit is
 * at position 32.
 */
static inline int fls(int x)
{
	return fls64((unsigned int) x);
}

static inline unsigned int __arch_hweight32(unsigned int w)
{
	return __builtin_popcount(w);
}

static inline unsigned int __arch_hweight16(unsigned int w)
{
	return __builtin_popcount(w & 0xffff);
}

static inline unsigned int __arch_hweight8(unsigned int w)
{
	return __builtin_popcount(w & 0xff);
}

static inline unsigned long __arch_hweight64(__u64 w)
{
	return __builtin_popcountll(w);
}

#include <asm-generic/bitops/builtin-__ffs.h>
#include <asm-generic/bitops/builtin-__fls.h>
#include <asm-generic/bitops/builtin-ffs.h>
#include <asm-generic/bitops/const_hweight.h>
#include <asm-generic/bitops/lock.h>
#include <asm-generic/bitops/find.h>
#include <asm-generic/bitops/sched.h>
#include <asm-generic/bitops/non-atomic.h>
#include <asm-generic/bitops/le.h>

#endif /* _ASM_TILE_BITOPS_H */

Filemanager

Name Type Size Permission Actions
Kbuild File 439 B 0644
asm-offsets.h File 35 B 0644
atomic.h File 5.14 KB 0644
atomic_32.h File 8.91 KB 0644
atomic_64.h File 5.51 KB 0644
backtrace.h File 3.98 KB 0644
barrier.h File 2.89 KB 0644
bitops.h File 2.37 KB 0644
bitops_32.h File 4.01 KB 0644
bitops_64.h File 2.67 KB 0644
cache.h File 2.6 KB 0644
cacheflush.h File 4.94 KB 0644
checksum.h File 1.23 KB 0644
cmpxchg.h File 3.47 KB 0644
compat.h File 7.38 KB 0644
current.h File 947 B 0644
delay.h File 1.1 KB 0644
device.h File 978 B 0644
div64.h File 319 B 0644
dma-mapping.h File 1.82 KB 0644
dma.h File 762 B 0644
elf.h File 5.42 KB 0644
fixmap.h File 2.73 KB 0644
ftrace.h File 1.08 KB 0644
futex.h File 4.23 KB 0644
hardirq.h File 1.28 KB 0644
hardwall.h File 1.08 KB 0644
highmem.h File 2.08 KB 0644
homecache.h File 4.21 KB 0644
hugetlb.h File 3.04 KB 0644
hv_driver.h File 1.92 KB 0644
ide.h File 758 B 0644
insn.h File 1.79 KB 0644
io.h File 12.43 KB 0644
irq.h File 3.11 KB 0644
irq_work.h File 283 B 0644
irqflags.h File 10.55 KB 0644
jump_label.h File 1.47 KB 0644
kdebug.h File 769 B 0644
kexec.h File 2.23 KB 0644
kgdb.h File 1.99 KB 0644
kmap_types.h File 1.02 KB 0644
kprobes.h File 2.19 KB 0644
linkage.h File 1.46 KB 0644
mmu.h File 965 B 0644
mmu_context.h File 4.5 KB 0644
mmzone.h File 2.07 KB 0644
module.h File 1.12 KB 0644
page.h File 10.32 KB 0644
pci.h File 6.58 KB 0644
percpu.h File 1.79 KB 0644
perf_event.h File 766 B 0644
pgalloc.h File 4.76 KB 0644
pgtable.h File 15.66 KB 0644
pgtable_32.h File 4.08 KB 0644
pgtable_64.h File 5.11 KB 0644
pmc.h File 2.15 KB 0644
processor.h File 10.62 KB 0644
ptrace.h File 2.96 KB 0644
sections.h File 1.37 KB 0644
setup.h File 1.63 KB 0644
sigframe.h File 956 B 0644
signal.h File 1.07 KB 0644
smp.h File 3.98 KB 0644
spinlock.h File 741 B 0644
spinlock_32.h File 2.9 KB 0644
spinlock_64.h File 3.88 KB 0644
spinlock_types.h File 1.58 KB 0644
stack.h File 2.59 KB 0644
string.h File 1.19 KB 0644
switch_to.h File 2.75 KB 0644
syscall.h File 2.88 KB 0644
syscalls.h File 2.35 KB 0644
thread_info.h File 5.54 KB 0644
tile-desc.h File 650 B 0644
tile-desc_32.h File 12.54 KB 0644
tile-desc_64.h File 10.83 KB 0644
timex.h File 1.71 KB 0644
tlb.h File 878 B 0644
tlbflush.h File 3.99 KB 0644
topology.h File 1.52 KB 0644
traps.h File 2.44 KB 0644
uaccess.h File 12.77 KB 0644
unaligned.h File 1.56 KB 0644
unistd.h File 777 B 0644
user.h File 717 B 0644
vdso.h File 1.84 KB 0644
vga.h File 1.05 KB 0644
word-at-a-time.h File 1.07 KB 0644