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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 )
*/
# ifndef _SPARC_BITOPS_H
# define _SPARC_BITOPS_H
# include <linux/compiler.h>
# include <asm/byteorder.h>
# ifdef __KERNEL__
# ifndef _LINUX_BITOPS_H
# error only <linux / bitops.h> can be included directly
# 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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/*
* 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 ;
ADDR = ( ( unsigned long * ) addr ) + ( nr > > 5 ) ;
mask = 1 < < ( nr & 31 ) ;
return ___set_bit ( ADDR , mask ) ! = 0 ;
}
static inline void set_bit ( unsigned long nr , volatile unsigned long * addr )
{
unsigned long * ADDR , mask ;
ADDR = ( ( unsigned long * ) addr ) + ( nr > > 5 ) ;
mask = 1 < < ( nr & 31 ) ;
( void ) ___set_bit ( ADDR , mask ) ;
}
static inline int test_and_clear_bit ( unsigned long nr , volatile unsigned long * addr )
{
unsigned long * ADDR , mask ;
ADDR = ( ( unsigned long * ) addr ) + ( nr > > 5 ) ;
mask = 1 < < ( nr & 31 ) ;
return ___clear_bit ( ADDR , mask ) ! = 0 ;
}
static inline void clear_bit ( unsigned long nr , volatile unsigned long * addr )
{
unsigned long * ADDR , mask ;
ADDR = ( ( unsigned long * ) addr ) + ( nr > > 5 ) ;
mask = 1 < < ( nr & 31 ) ;
( void ) ___clear_bit ( ADDR , mask ) ;
}
static inline int test_and_change_bit ( unsigned long nr , volatile unsigned long * addr )
{
unsigned long * ADDR , mask ;
ADDR = ( ( unsigned long * ) addr ) + ( nr > > 5 ) ;
mask = 1 < < ( nr & 31 ) ;
return ___change_bit ( ADDR , mask ) ! = 0 ;
}
static inline void change_bit ( unsigned long nr , volatile unsigned long * addr )
{
unsigned long * ADDR , mask ;
ADDR = ( ( unsigned long * ) addr ) + ( nr > > 5 ) ;
mask = 1 < < ( nr & 31 ) ;
( void ) ___change_bit ( ADDR , mask ) ;
}
# include <asm-generic/bitops/non-atomic.h>
# include <asm-generic/bitops/ffz.h>
# include <asm-generic/bitops/__ffs.h>
# include <asm-generic/bitops/sched.h>
# include <asm-generic/bitops/ffs.h>
# 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>
# include <asm-generic/bitops/hweight.h>
# include <asm-generic/bitops/lock.h>
# include <asm-generic/bitops/find.h>
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>
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# include <asm-generic/bitops/le.h>
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# include <asm-generic/bitops/ext2-atomic.h>
# endif /* __KERNEL__ */
# endif /* defined(_SPARC_BITOPS_H) */