2005-04-17 00:20:36 +02:00
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#ifndef __ASM_SH_BITOPS_H
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#define __ASM_SH_BITOPS_H
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#ifdef __KERNEL__
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2007-10-19 08:40:26 +02:00
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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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2005-04-17 00:20:36 +02:00
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#include <asm/system.h>
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/* For __swab32 */
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#include <asm/byteorder.h>
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2006-09-27 05:31:01 +02:00
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static inline void set_bit(int nr, volatile void * addr)
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2005-04-17 00:20:36 +02:00
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{
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int mask;
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volatile unsigned int *a = addr;
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unsigned long flags;
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a += nr >> 5;
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mask = 1 << (nr & 0x1f);
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local_irq_save(flags);
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*a |= mask;
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local_irq_restore(flags);
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}
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/*
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* clear_bit() doesn't provide any barrier for the compiler.
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*/
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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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2006-09-27 05:31:01 +02:00
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static inline void clear_bit(int nr, volatile void * addr)
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2005-04-17 00:20:36 +02:00
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{
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int mask;
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volatile unsigned int *a = addr;
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unsigned long flags;
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a += nr >> 5;
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mask = 1 << (nr & 0x1f);
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local_irq_save(flags);
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*a &= ~mask;
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local_irq_restore(flags);
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}
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2006-09-27 05:31:01 +02:00
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static inline void change_bit(int nr, volatile void * addr)
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2005-04-17 00:20:36 +02:00
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{
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int mask;
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volatile unsigned int *a = addr;
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unsigned long flags;
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a += nr >> 5;
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mask = 1 << (nr & 0x1f);
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local_irq_save(flags);
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*a ^= mask;
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local_irq_restore(flags);
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}
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2006-09-27 05:31:01 +02:00
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static inline int test_and_set_bit(int nr, volatile void * addr)
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2005-04-17 00:20:36 +02:00
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{
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int mask, retval;
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volatile unsigned int *a = addr;
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unsigned long flags;
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a += nr >> 5;
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mask = 1 << (nr & 0x1f);
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local_irq_save(flags);
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retval = (mask & *a) != 0;
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*a |= mask;
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local_irq_restore(flags);
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return retval;
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}
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2006-09-27 05:31:01 +02:00
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static inline int test_and_clear_bit(int nr, volatile void * addr)
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2005-04-17 00:20:36 +02:00
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{
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int mask, retval;
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volatile unsigned int *a = addr;
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unsigned long flags;
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a += nr >> 5;
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mask = 1 << (nr & 0x1f);
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local_irq_save(flags);
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retval = (mask & *a) != 0;
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*a &= ~mask;
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local_irq_restore(flags);
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return retval;
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}
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2006-09-27 05:31:01 +02:00
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static inline int test_and_change_bit(int nr, volatile void * addr)
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2005-04-17 00:20:36 +02:00
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{
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int mask, retval;
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volatile unsigned int *a = addr;
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unsigned long flags;
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a += nr >> 5;
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mask = 1 << (nr & 0x1f);
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local_irq_save(flags);
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retval = (mask & *a) != 0;
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*a ^= mask;
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local_irq_restore(flags);
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return retval;
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}
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[PATCH] bitops: sh: use generic bitops
- remove __{,test_and_}{set,clear,change}_bit() and test_bit()
- remove find_{next,first}{,_zero}_bit()
- remove generic_ffs()
- remove generic_hweight{32,16,8}()
- remove sched_find_first_bit()
- remove ext2_{set,clear,test,find_first_zero,find_next_zero}_bit()
- remove ext2_{set,clear}_bit_atomic()
- remove minix_{test,set,test_and_clear,test,find_first_zero}_bit()
- remove generic_fls()
- remove generic_fls64()
Signed-off-by: Akinobu Mita <mita@miraclelinux.com>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: Kazumoto Kojima <kkojima@rr.iij4u.or.jp>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-26 11:39:35 +02:00
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#include <asm-generic/bitops/non-atomic.h>
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2005-04-17 00:20:36 +02:00
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2006-09-27 05:31:01 +02:00
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static inline unsigned long ffz(unsigned long word)
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2005-04-17 00:20:36 +02:00
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{
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unsigned long result;
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__asm__("1:\n\t"
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"shlr %1\n\t"
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"bt/s 1b\n\t"
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" add #1, %0"
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: "=r" (result), "=r" (word)
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: "0" (~0L), "1" (word)
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: "t");
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return result;
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}
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/**
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* __ffs - find first bit in word.
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* @word: The word to search
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*
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* Undefined if no bit exists, so code should check against 0 first.
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*/
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2006-09-27 05:31:01 +02:00
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static inline unsigned long __ffs(unsigned long word)
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2005-04-17 00:20:36 +02:00
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{
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unsigned long result;
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__asm__("1:\n\t"
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"shlr %1\n\t"
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"bf/s 1b\n\t"
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" add #1, %0"
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: "=r" (result), "=r" (word)
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: "0" (~0L), "1" (word)
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: "t");
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return result;
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}
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[PATCH] bitops: sh: use generic bitops
- remove __{,test_and_}{set,clear,change}_bit() and test_bit()
- remove find_{next,first}{,_zero}_bit()
- remove generic_ffs()
- remove generic_hweight{32,16,8}()
- remove sched_find_first_bit()
- remove ext2_{set,clear,test,find_first_zero,find_next_zero}_bit()
- remove ext2_{set,clear}_bit_atomic()
- remove minix_{test,set,test_and_clear,test,find_first_zero}_bit()
- remove generic_fls()
- remove generic_fls64()
Signed-off-by: Akinobu Mita <mita@miraclelinux.com>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: Kazumoto Kojima <kkojima@rr.iij4u.or.jp>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-26 11:39:35 +02:00
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#include <asm-generic/bitops/find.h>
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#include <asm-generic/bitops/ffs.h>
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#include <asm-generic/bitops/hweight.h>
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2007-10-18 12:06:39 +02:00
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#include <asm-generic/bitops/lock.h>
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[PATCH] bitops: sh: use generic bitops
- remove __{,test_and_}{set,clear,change}_bit() and test_bit()
- remove find_{next,first}{,_zero}_bit()
- remove generic_ffs()
- remove generic_hweight{32,16,8}()
- remove sched_find_first_bit()
- remove ext2_{set,clear,test,find_first_zero,find_next_zero}_bit()
- remove ext2_{set,clear}_bit_atomic()
- remove minix_{test,set,test_and_clear,test,find_first_zero}_bit()
- remove generic_fls()
- remove generic_fls64()
Signed-off-by: Akinobu Mita <mita@miraclelinux.com>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: Kazumoto Kojima <kkojima@rr.iij4u.or.jp>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-26 11:39:35 +02:00
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#include <asm-generic/bitops/sched.h>
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#include <asm-generic/bitops/ext2-non-atomic.h>
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#include <asm-generic/bitops/ext2-atomic.h>
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#include <asm-generic/bitops/minix.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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2005-04-17 00:20:36 +02:00
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#endif /* __KERNEL__ */
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#endif /* __ASM_SH_BITOPS_H */
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