1 files changed, 15 insertions, 0 deletions
diff --git a/usr/klibc/arch/arm/__muldi3.c b/usr/klibc/arch/arm/__muldi3.c
new file mode 100644
index 0000000..3fdeb2b
--- /dev/null
+++ b/usr/klibc/arch/arm/__muldi3.c
@@ -0,0 +1,15 @@
+#include <stdint.h>
+
+uint64_t __muldi3(uint64_t a, uint64_t b)
+{
+	uint32_t al = (uint32_t)a;
+	uint32_t ah = (uint32_t)(a >> 32);
+	uint32_t bl = (uint32_t)b;
+	uint32_t bh = (uint32_t)(b >> 32);
+	uint64_t v;
+
+	v = (uint64_t)al * bl;
+	v += (uint64_t)(al*bh+ah*bl) << 32;
+
+	return v;
+}