2008-07-18 12:55:51 +08:00
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/*
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* bitops.h: Bit string operations on the V9.
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*
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* Copyright 1996, 1997 David S. Miller (davem@caip.rutgers.edu)
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*/
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#ifndef _SPARC64_BITOPS_H
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#define _SPARC64_BITOPS_H
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#ifndef _LINUX_BITOPS_H
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#error only <linux/bitops.h> can be included directly
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#endif
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#include <linux/compiler.h>
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#include <asm/byteorder.h>
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extern int test_and_set_bit(unsigned long nr, volatile unsigned long *addr);
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extern int test_and_clear_bit(unsigned long nr, volatile unsigned long *addr);
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extern int test_and_change_bit(unsigned long nr, volatile unsigned long *addr);
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extern void set_bit(unsigned long nr, volatile unsigned long *addr);
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extern void clear_bit(unsigned long nr, volatile unsigned long *addr);
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extern void change_bit(unsigned long nr, volatile unsigned long *addr);
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#include <asm-generic/bitops/non-atomic.h>
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#define smp_mb__before_clear_bit() barrier()
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#define smp_mb__after_clear_bit() barrier()
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#include <asm-generic/bitops/ffz.h>
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#include <asm-generic/bitops/__ffs.h>
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#include <asm-generic/bitops/fls.h>
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#include <asm-generic/bitops/__fls.h>
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#include <asm-generic/bitops/fls64.h>
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#ifdef __KERNEL__
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#include <asm-generic/bitops/sched.h>
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#include <asm-generic/bitops/ffs.h>
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/*
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* hweightN: returns the hamming weight (i.e. the number
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* of bits set) of a N-bit word
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*/
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#ifdef ULTRA_HAS_POPULATION_COUNT
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2010-02-01 22:03:07 +08:00
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static inline unsigned int __arch_hweight64(unsigned long w)
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2008-07-18 12:55:51 +08:00
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{
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unsigned int res;
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__asm__ ("popc %1,%0" : "=r" (res) : "r" (w));
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return res;
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}
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2010-02-01 22:03:07 +08:00
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static inline unsigned int __arch_hweight32(unsigned int w)
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2008-07-18 12:55:51 +08:00
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{
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unsigned int res;
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__asm__ ("popc %1,%0" : "=r" (res) : "r" (w & 0xffffffff));
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return res;
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}
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2010-02-01 22:03:07 +08:00
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static inline unsigned int __arch_hweight16(unsigned int w)
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2008-07-18 12:55:51 +08:00
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{
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unsigned int res;
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__asm__ ("popc %1,%0" : "=r" (res) : "r" (w & 0xffff));
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return res;
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}
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2010-02-01 22:03:07 +08:00
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static inline unsigned int __arch_hweight8(unsigned int w)
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2008-07-18 12:55:51 +08:00
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{
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unsigned int res;
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__asm__ ("popc %1,%0" : "=r" (res) : "r" (w & 0xff));
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return res;
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}
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#else
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2010-02-01 22:03:07 +08:00
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#include <asm-generic/bitops/arch_hweight.h>
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2008-07-18 12:55:51 +08:00
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#endif
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2010-02-01 22:03:07 +08:00
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#include <asm-generic/bitops/const_hweight.h>
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2008-07-18 12:55:51 +08:00
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#include <asm-generic/bitops/lock.h>
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#endif /* __KERNEL__ */
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#include <asm-generic/bitops/find.h>
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#ifdef __KERNEL__
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bitops: introduce little-endian bitops for most architectures
Introduce little-endian bit operations to the big-endian architectures
which do not have native little-endian bit operations and the
little-endian architectures. (alpha, avr32, blackfin, cris, frv, h8300,
ia64, m32r, mips, mn10300, parisc, sh, sparc, tile, x86, xtensa)
These architectures can just include generic implementation
(asm-generic/bitops/le.h).
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Mikael Starvik <starvik@axis.com>
Cc: David Howells <dhowells@redhat.com>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Kyle McMartin <kyle@mcmartin.ca>
Cc: Matthew Wilcox <willy@debian.org>
Cc: Grant Grundler <grundler@parisc-linux.org>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: Kazumoto Kojima <kkojima@rr.iij4u.or.jp>
Cc: Hirokazu Takata <takata@linux-m32r.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Chris Zankel <chris@zankel.net>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com>
Acked-by: "H. Peter Anvin" <hpa@zytor.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-24 07:42:02 +08:00
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#include <asm-generic/bitops/le.h>
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2008-07-18 12:55:51 +08:00
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#define ext2_set_bit_atomic(lock,nr,addr) \
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test_and_set_bit((nr) ^ 0x38,(unsigned long *)(addr))
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#define ext2_clear_bit_atomic(lock,nr,addr) \
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test_and_clear_bit((nr) ^ 0x38,(unsigned long *)(addr))
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#endif /* __KERNEL__ */
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#endif /* defined(_SPARC64_BITOPS_H) */
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