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);