1 files changed, 28 insertions, 0 deletions
diff --git a/arch/m68k/include/asm/div64_mm.h b/arch/m68k/include/asm/div64_mm.h
new file mode 100644
index 000000000000..8243c931b5c0
--- /dev/null
+++ b/arch/m68k/include/asm/div64_mm.h
@@ -0,0 +1,28 @@
+#ifndef _M68K_DIV64_H
+#define _M68K_DIV64_H
+
+#include <linux/types.h>
+
+/* n = n / base; return rem; */
+
+#define do_div(n, base) ({					\
+	union {							\
+		unsigned long n32[2];				\
+		unsigned long long n64;				\
+	} __n;							\
+	unsigned long __rem, __upper;				\
+								\
+	__n.n64 = (n);						\
+	if ((__upper = __n.n32[0])) {				\
+		asm ("divul.l %2,%1:%0"				\
+			: "=d" (__n.n32[0]), "=d" (__upper)	\
+			: "d" (base), "0" (__n.n32[0]));	\
+	}							\
+	asm ("divu.l %2,%1:%0"					\
+		: "=d" (__n.n32[1]), "=d" (__rem)		\
+		: "d" (base), "1" (__upper), "0" (__n.n32[1]));	\
+	(n) = __n.n64;						\
+	__rem;							\
+})
+
+#endif /* _M68K_DIV64_H */