+#ifndef __S390_DIV64
+#define __S390_DIV64
+
+#ifndef __s390x__
+
+/* for do_div "base" needs to be smaller than 2^31-1 */
+#define do_div(n, base) ({ \
+ unsigned long long __n = (n); \
+ unsigned long __r; \
+ \
+ asm (" slr 0,0\n" \
+ " l 1,%1\n" \
+ " srdl 0,1\n" \
+ " dr 0,%2\n" \
+ " alr 1,1\n" \
+ " alr 0,0\n" \
+ " lhi 2,1\n" \
+ " n 2,%1\n" \
+ " alr 0,2\n" \
+ " clr 0,%2\n" \
+ " jl 0f\n" \
+ " slr 0,%2\n" \
+ " ahi 1,1\n" \
+ "0: st 1,%1\n" \
+ " l 1,4+%1\n" \
+ " srdl 0,1\n" \
+ " dr 0,%2\n" \
+ " alr 1,1\n" \
+ " alr 0,0\n" \
+ " lhi 2,1\n" \
+ " n 2,4+%1\n" \
+ " alr 0,2\n" \
+ " clr 0,%2\n" \
+ " jl 1f\n" \
+ " slr 0,%2\n" \
+ " ahi 1,1\n" \
+ "1: st 1,4+%1\n" \
+ " lr %0,0" \
+ : "=d" (__r), "=m" (__n) \
+ : "d" (base), "m" (__n) : "0", "1", "2", "cc" ); \
+ (n) = (__n); \
+ __r; \
+})
+
+#else /* __s390x__ */
#include <asm-generic/div64.h>
+#endif /* __s390x__ */
+
+#endif
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