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powerpc: introduce little-endian bitops

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Introduce little-endian bit operations by renaming existing powerpc native
little-endian bit operations and changing them to take any pointer types.

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Akinobu Mita 2011-03-23 16:41:56 -07:00 committed by Linus Torvalds
parent a56560b3b2
commit f57d7ff1b8
1 changed files with 38 additions and 23 deletions
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61
arch/powerpc/include/asm/bitops.h
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@ -281,27 +281,42 @@ unsigned long __arch_hweight64(__u64 w);
/* Little-endian versions */
static __inline__ int test_le_bit(unsigned long nr,
__const__ unsigned long *addr)
static __inline__ int test_bit_le(unsigned long nr,
__const__ void *addr)
{
__const__ unsigned char *tmp = (__const__ unsigned char *) addr;
return (tmp[nr >> 3] >> (nr & 7)) & 1;
}
#define __set_le_bit(nr, addr) \
__set_bit((nr) ^ BITOP_LE_SWIZZLE, (addr))
#define __clear_le_bit(nr, addr) \
__clear_bit((nr) ^ BITOP_LE_SWIZZLE, (addr))
static inline void __set_bit_le(int nr, void *addr)
{
__set_bit(nr ^ BITOP_LE_SWIZZLE, addr);
}
#define test_and_set_le_bit(nr, addr) \
test_and_set_bit((nr) ^ BITOP_LE_SWIZZLE, (addr))
#define test_and_clear_le_bit(nr, addr) \
test_and_clear_bit((nr) ^ BITOP_LE_SWIZZLE, (addr))
static inline void __clear_bit_le(int nr, void *addr)
{
__clear_bit(nr ^ BITOP_LE_SWIZZLE, addr);
}
#define __test_and_set_le_bit(nr, addr) \
__test_and_set_bit((nr) ^ BITOP_LE_SWIZZLE, (addr))
#define __test_and_clear_le_bit(nr, addr) \
__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);
}
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);
}
#define find_first_zero_bit_le(addr, size) \
find_next_zero_bit_le((addr), (size), 0)
@ -313,16 +328,16 @@ unsigned long find_next_bit_le(const void *addr,
/* Bitmap functions for the ext2 filesystem */
#define ext2_set_bit(nr,addr) \
__test_and_set_le_bit((nr), (unsigned long*)addr)
__test_and_set_bit_le((nr), (unsigned long*)addr)
#define ext2_clear_bit(nr, addr) \
__test_and_clear_le_bit((nr), (unsigned long*)addr)
__test_and_clear_bit_le((nr), (unsigned long*)addr)
#define ext2_set_bit_atomic(lock, nr, addr) \
test_and_set_le_bit((nr), (unsigned long*)addr)
test_and_set_bit_le((nr), (unsigned long*)addr)
#define ext2_clear_bit_atomic(lock, nr, addr) \
test_and_clear_le_bit((nr), (unsigned long*)addr)
test_and_clear_bit_le((nr), (unsigned long*)addr)
#define ext2_test_bit(nr, addr) test_le_bit((nr),(unsigned long*)addr)
#define ext2_test_bit(nr, addr) test_bit_le((nr),(unsigned long*)addr)
#define ext2_find_first_zero_bit(addr, size) \
find_first_zero_bit_le((unsigned long*)addr, size)
@ -334,13 +349,13 @@ unsigned long find_next_bit_le(const void *addr,
/* Bitmap functions for the minix filesystem. */
#define minix_test_and_set_bit(nr,addr) \
__test_and_set_le_bit(nr, (unsigned long *)addr)
__test_and_set_bit_le(nr, (unsigned long *)addr)
#define minix_set_bit(nr,addr) \
__set_le_bit(nr, (unsigned long *)addr)
__set_bit_le(nr, (unsigned long *)addr)
#define minix_test_and_clear_bit(nr,addr) \
__test_and_clear_le_bit(nr, (unsigned long *)addr)
__test_and_clear_bit_le(nr, (unsigned long *)addr)
#define minix_test_bit(nr,addr) \
test_le_bit(nr, (unsigned long *)addr)
test_bit_le(nr, (unsigned long *)addr)
#define minix_find_first_zero_bit(addr,size) \
find_first_zero_bit_le((unsigned long *)addr, size)