1 files changed, 26 insertions, 0 deletions

diff --git a/include/asm-m68k/div64.h b/include/asm-m68k/div64.h
new file mode 100644
index 000000000000..9f65de1a2480
--- /dev/null
+++ b/include/asm-m68k/div64.h
@@ -0,0 +1,26 @@
+#ifndef _M68K_DIV64_H
+#define _M68K_DIV64_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 */