X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=include%2Fasm-x86%2Fdiv64.h;h=9a2d644c08efc0981dbc13b1700e81917fef7c63;hb=1beee8dc8cf58e3f605bd7b34d7a39939be7d8d2;hp=0dbf8bf3ef0a8d06308ea3cf8e72612c28c016c2;hpb=9e9abecfc0ff3a9ad2ead954b37bbfcb863c775e;p=linux-2.6

diff --git a/include/asm-x86/div64.h b/include/asm-x86/div64.h
index 0dbf8bf3ef..9a2d644c08 100644
--- a/include/asm-x86/div64.h
+++ b/include/asm-x86/div64.h
@@ -33,25 +33,25 @@
 	__mod;							\
 })
 
-/*
- * (long)X = ((long long)divs) / (long)div
- * (long)rem = ((long long)divs) % (long)div
- *
- * Warning, this will do an exception if X overflows.
- */
-#define div_long_long_rem(a, b, c) div_ll_X_l_rem(a, b, c)
-
-static inline long div_ll_X_l_rem(long long divs, long div, long *rem)
+static inline u64 div_u64_rem(u64 dividend, u32 divisor, u32 *remainder)
 {
-	long dum2;
-	asm("divl %2":"=a"(dum2), "=d"(*rem)
-	    : "rm"(div), "A"(divs));
-
-	return dum2;
-
+	union {
+		u64 v64;
+		u32 v32[2];
+	} d = { dividend };
+	u32 upper;
+
+	upper = d.v32[1];
+	d.v32[1] = 0;
+	if (upper >= divisor) {
+		d.v32[1] = upper / divisor;
+		upper %= divisor;
+	}
+	asm ("divl %2" : "=a" (d.v32[0]), "=d" (*remainder) :
+		"rm" (divisor), "0" (d.v32[0]), "1" (upper));
+	return d.v64;
 }
-
-extern uint64_t div64_64(uint64_t dividend, uint64_t divisor);
+#define div_u64_rem	div_u64_rem
 
 #else
 # include <asm-generic/div64.h>