powerpc: introduce little-endian bitops

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>

diff --git a/arch/powerpc/include/asm/bitops.h b/arch/powerpc/include/asm/bitops.h
index db567ed..0c1046f 100644 (file)
--- a/arch/powerpc/include/asm/bitops.h
+++ b/arch/powerpc/include/asm/bitops.h
@@ -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);
+}
+
+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);
+}
 
-#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_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)