1 files changed, 53 insertions, 0 deletions
diff --git a/arch/m68k/include/asm/bitops.h b/arch/m68k/include/asm/bitops.h
new file mode 100644
index 0000000..525d90c
--- /dev/null
+++ b/arch/m68k/include/asm/bitops.h
@@ -0,0 +1,53 @@
+/*
+ * bitops.h: Bit string operations on the m68k
+ */
+
+#ifndef _M68K_BITOPS_H
+#define _M68K_BITOPS_H
+
+#include <linux/config.h>
+#include <asm/byteorder.h>
+
+extern void set_bit(int nr, volatile void *addr);
+extern void clear_bit(int nr, volatile void *addr);
+extern void change_bit(int nr, volatile void *addr);
+extern int test_and_set_bit(int nr, volatile void *addr);
+extern int test_and_clear_bit(int nr, volatile void *addr);
+extern int test_and_change_bit(int nr, volatile void *addr);
+
+#ifdef __KERNEL__
+
+
+extern inline int test_bit(int nr, __const__ volatile void *addr)
+{
+	__const__ unsigned int *p = (__const__ unsigned int *) addr;
+
+	return (p[nr >> 5] & (1UL << (nr & 31))) != 0;
+}
+
+extern inline int test_and_set_bit(int nr, volatile void *vaddr)
+{
+	char retval;
+
+	volatile char *p = &((volatile char *)vaddr)[(nr^31) >> 3];
+	__asm__ __volatile__ ("bset %2,(%4); sne %0"
+	     : "=d" (retval), "=m" (*p)
+	     : "di" (nr & 7), "m" (*p), "a" (p));
+
+	return retval;
+}
+
+#define __ffs(x) (ffs(x) - 1)
+
+/*
+ *  * hweightN: returns the hamming weight (i.e. the number
+ *   * of bits set) of a N-bit word
+ *    */
+
+#define hweight32(x) generic_hweight32(x)
+#define hweight16(x) generic_hweight16(x)
+#define hweight8(x) generic_hweight8(x)
+
+#endif /* __KERNEL__ */
+
+#endif /* _M68K_BITOPS_H */