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										 |  |  | /*
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							|  |  |  |  * bitops.h: Bit string operations on the Sparc. | 
					
						
							|  |  |  |  * | 
					
						
							|  |  |  |  * Copyright 1995 David S. Miller (davem@caip.rutgers.edu) | 
					
						
							|  |  |  |  * Copyright 1996 Eddie C. Dost   (ecd@skynet.be) | 
					
						
							|  |  |  |  * Copyright 2001 Anton Blanchard (anton@samba.org) | 
					
						
							|  |  |  |  */ | 
					
						
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							|  |  |  | #ifndef _SPARC_BITOPS_H
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							|  |  |  | #define _SPARC_BITOPS_H
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							|  |  |  | #include <linux/compiler.h>
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							|  |  |  | #include <asm/byteorder.h>
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							|  |  |  | #ifdef __KERNEL__
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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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										 |  |  | unsigned long ___set_bit(unsigned long *addr, unsigned long mask); | 
					
						
							|  |  |  | unsigned long ___clear_bit(unsigned long *addr, unsigned long mask); | 
					
						
							|  |  |  | unsigned long ___change_bit(unsigned long *addr, unsigned long mask); | 
					
						
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											2008-07-17 21:55:51 -07:00
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							|  |  |  | /*
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							|  |  |  |  * Set bit 'nr' in 32-bit quantity at address 'addr' where bit '0' | 
					
						
							|  |  |  |  * is in the highest of the four bytes and bit '31' is the high bit | 
					
						
							|  |  |  |  * within the first byte. Sparc is BIG-Endian. Unless noted otherwise | 
					
						
							|  |  |  |  * all bit-ops return 0 if bit was previously clear and != 0 otherwise. | 
					
						
							|  |  |  |  */ | 
					
						
							|  |  |  | static inline int test_and_set_bit(unsigned long nr, volatile unsigned long *addr) | 
					
						
							|  |  |  | { | 
					
						
							|  |  |  | 	unsigned long *ADDR, mask; | 
					
						
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							|  |  |  | 	ADDR = ((unsigned long *) addr) + (nr >> 5); | 
					
						
							|  |  |  | 	mask = 1 << (nr & 31); | 
					
						
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							|  |  |  | 	return ___set_bit(ADDR, mask) != 0; | 
					
						
							|  |  |  | } | 
					
						
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							|  |  |  | static inline void set_bit(unsigned long nr, volatile unsigned long *addr) | 
					
						
							|  |  |  | { | 
					
						
							|  |  |  | 	unsigned long *ADDR, mask; | 
					
						
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							|  |  |  | 	ADDR = ((unsigned long *) addr) + (nr >> 5); | 
					
						
							|  |  |  | 	mask = 1 << (nr & 31); | 
					
						
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							|  |  |  | 	(void) ___set_bit(ADDR, mask); | 
					
						
							|  |  |  | } | 
					
						
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							|  |  |  | static inline int test_and_clear_bit(unsigned long nr, volatile unsigned long *addr) | 
					
						
							|  |  |  | { | 
					
						
							|  |  |  | 	unsigned long *ADDR, mask; | 
					
						
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							|  |  |  | 	ADDR = ((unsigned long *) addr) + (nr >> 5); | 
					
						
							|  |  |  | 	mask = 1 << (nr & 31); | 
					
						
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							|  |  |  | 	return ___clear_bit(ADDR, mask) != 0; | 
					
						
							|  |  |  | } | 
					
						
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							|  |  |  | static inline void clear_bit(unsigned long nr, volatile unsigned long *addr) | 
					
						
							|  |  |  | { | 
					
						
							|  |  |  | 	unsigned long *ADDR, mask; | 
					
						
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							|  |  |  | 	ADDR = ((unsigned long *) addr) + (nr >> 5); | 
					
						
							|  |  |  | 	mask = 1 << (nr & 31); | 
					
						
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							|  |  |  | 	(void) ___clear_bit(ADDR, mask); | 
					
						
							|  |  |  | } | 
					
						
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							|  |  |  | static inline int test_and_change_bit(unsigned long nr, volatile unsigned long *addr) | 
					
						
							|  |  |  | { | 
					
						
							|  |  |  | 	unsigned long *ADDR, mask; | 
					
						
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							|  |  |  | 	ADDR = ((unsigned long *) addr) + (nr >> 5); | 
					
						
							|  |  |  | 	mask = 1 << (nr & 31); | 
					
						
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							|  |  |  | 	return ___change_bit(ADDR, mask) != 0; | 
					
						
							|  |  |  | } | 
					
						
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							|  |  |  | static inline void change_bit(unsigned long nr, volatile unsigned long *addr) | 
					
						
							|  |  |  | { | 
					
						
							|  |  |  | 	unsigned long *ADDR, mask; | 
					
						
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							|  |  |  | 	ADDR = ((unsigned long *) addr) + (nr >> 5); | 
					
						
							|  |  |  | 	mask = 1 << (nr & 31); | 
					
						
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							|  |  |  | 	(void) ___change_bit(ADDR, mask); | 
					
						
							|  |  |  | } | 
					
						
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							|  |  |  | #include <asm-generic/bitops/non-atomic.h>
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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/sched.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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							|  |  |  | #include <asm-generic/bitops/hweight.h>
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							|  |  |  | #include <asm-generic/bitops/lock.h>
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							|  |  |  | #include <asm-generic/bitops/find.h>
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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>
											
										 
											2011-03-23 16:42:02 -07:00
										 |  |  | #include <asm-generic/bitops/le.h>
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											2008-07-17 21:55:51 -07:00
										 |  |  | #include <asm-generic/bitops/ext2-atomic.h>
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							|  |  |  | #endif /* __KERNEL__ */
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							|  |  |  | #endif /* defined(_SPARC_BITOPS_H) */
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