linux-stable/include/asm-generic/bitops/le.h
Akinobu Mita a56560b3b2 asm-generic: change little-endian bitops to take any pointer types
This makes the little-endian bitops take any pointer types by changing the
prototypes and adding casts in the preprocessor macros.

That would seem to at least make all the filesystem code happier, and they
can continue to do just something like

  #define ext2_set_bit __test_and_set_bit_le

(or whatever the exact sequence ends up being).

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: Arnd Bergmann <arnd@arndb.de>
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>
Cc: Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-03-23 19:46:12 -07:00

80 lines
1.9 KiB
C

#ifndef _ASM_GENERIC_BITOPS_LE_H_
#define _ASM_GENERIC_BITOPS_LE_H_
#include <asm/types.h>
#include <asm/byteorder.h>
#if defined(__LITTLE_ENDIAN)
#define BITOP_LE_SWIZZLE 0
static inline unsigned long find_next_zero_bit_le(const void *addr,
unsigned long size, unsigned long offset)
{
return find_next_zero_bit(addr, size, offset);
}
static inline unsigned long find_next_bit_le(const void *addr,
unsigned long size, unsigned long offset)
{
return find_next_bit(addr, size, offset);
}
static inline unsigned long find_first_zero_bit_le(const void *addr,
unsigned long size)
{
return find_first_zero_bit(addr, size);
}
#elif defined(__BIG_ENDIAN)
#define BITOP_LE_SWIZZLE ((BITS_PER_LONG-1) & ~0x7)
extern unsigned long find_next_zero_bit_le(const void *addr,
unsigned long size, unsigned long offset);
extern unsigned long find_next_bit_le(const void *addr,
unsigned long size, unsigned long offset);
#define find_first_zero_bit_le(addr, size) \
find_next_zero_bit_le((addr), (size), 0)
#else
#error "Please fix <asm/byteorder.h>"
#endif
static inline int test_bit_le(int nr, const void *addr)
{
return test_bit(nr ^ BITOP_LE_SWIZZLE, addr);
}
static inline void __set_bit_le(int nr, void *addr)
{
__set_bit(nr ^ BITOP_LE_SWIZZLE, addr);
}
static inline void __clear_bit_le(int nr, void *addr)
{
__clear_bit(nr ^ BITOP_LE_SWIZZLE, addr);
}
static inline int test_and_set_bit_le(int nr, void *addr)
{
return test_and_set_bit(nr ^ BITOP_LE_SWIZZLE, addr);
}
static inline int test_and_clear_bit_le(int nr, void *addr)
{
return test_and_clear_bit(nr ^ BITOP_LE_SWIZZLE, addr);
}
static inline int __test_and_set_bit_le(int nr, void *addr)
{
return __test_and_set_bit(nr ^ BITOP_LE_SWIZZLE, addr);
}
static inline int __test_and_clear_bit_le(int nr, void *addr)
{
return __test_and_clear_bit(nr ^ BITOP_LE_SWIZZLE, addr);
}
#endif /* _ASM_GENERIC_BITOPS_LE_H_ */