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-rw-r--r--arch/parisc/lib/libgcc/__muldi3.c22
1 files changed, 22 insertions, 0 deletions
diff --git a/arch/parisc/lib/libgcc/__muldi3.c b/arch/parisc/lib/libgcc/__muldi3.c
new file mode 100644
index 000000000000..3308abdd5580
--- /dev/null
+++ b/arch/parisc/lib/libgcc/__muldi3.c
@@ -0,0 +1,22 @@
+#include "libgcc.h"
+
+union DWunion {
+ struct {
+ s32 high;
+ s32 low;
+ } s;
+ s64 ll;
+};
+
+s64 __muldi3(s64 u, s64 v)
+{
+ const union DWunion uu = { .ll = u };
+ const union DWunion vv = { .ll = v };
+ union DWunion w = { .ll = __umulsidi3(uu.s.low, vv.s.low) };
+
+ w.s.high += ((u32)uu.s.low * (u32)vv.s.high
+ + (u32)uu.s.high * (u32)vv.s.low);
+
+ return w.ll;
+}
+EXPORT_SYMBOL(__muldi3);