1 files changed, 25 insertions, 0 deletions
diff --git a/lib/builtins/modsi3.c b/lib/builtins/modsi3.c
new file mode 100644
index 000000000..d16213c49
--- /dev/null
+++ b/lib/builtins/modsi3.c
@@ -0,0 +1,25 @@
+/* ===-- modsi3.c - Implement __modsi3 -------------------------------------===
+ *
+ *                     The LLVM Compiler Infrastructure
+ *
+ * This file is dual licensed under the MIT and the University of Illinois Open
+ * Source Licenses. See LICENSE.TXT for details.
+ *
+ * ===----------------------------------------------------------------------===
+ *
+ * This file implements __modsi3 for the compiler_rt library.
+ *
+ * ===----------------------------------------------------------------------===
+ */
+
+#include "int_lib.h"
+
+su_int COMPILER_RT_ABI __divsi3(si_int a, si_int b);
+
+/* Returns: a % b */
+
+COMPILER_RT_ABI si_int
+__modsi3(si_int a, si_int b)
+{
+    return a - __divsi3(a, b) * b;
+}