diff --git a/lib/compiler-rt/builtins/arm/aeabi_ldivmod.S b/lib/compiler-rt/builtins/arm/aeabi_ldivmod.S
new file mode 100644
index 0000000..038ae5d
--- /dev/null
+++ b/lib/compiler-rt/builtins/arm/aeabi_ldivmod.S
@@ -0,0 +1,46 @@
+//===-- aeabi_ldivmod.S - EABI ldivmod implementation ---------------------===//
+//
+//                     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.
+//
+//===----------------------------------------------------------------------===//
+
+#include "../assembly.h"
+
+// struct { int64_t quot, int64_t rem}
+//        __aeabi_ldivmod(int64_t numerator, int64_t denominator) {
+//   int64_t rem, quot;
+//   quot = __divmoddi4(numerator, denominator, &rem);
+//   return {quot, rem};
+// }
+
+#if defined(__MINGW32__)
+#define __aeabi_ldivmod __rt_sdiv64
+#endif
+
+        .syntax unified
+        .p2align 2
+DEFINE_COMPILERRT_FUNCTION(__aeabi_ldivmod)
+        push    {r6, lr}
+        sub     sp, sp, #16
+        add     r6, sp, #8
+        str     r6, [sp]
+#if defined(__MINGW32__)
+        movs    r6, r0
+        movs    r0, r2
+        movs    r2, r6
+        movs    r6, r1
+        movs    r1, r3
+        movs    r3, r6
+#endif
+        bl      SYMBOL_NAME(__divmoddi4)
+        ldr     r2, [sp, #8]
+        ldr     r3, [sp, #12]
+        add     sp, sp, #16
+        pop     {r6, pc}
+END_COMPILERRT_FUNCTION(__aeabi_ldivmod)
+
+NO_EXEC_STACK_DIRECTIVE
+