1 files changed, 43 insertions, 0 deletions
diff --git a/roms/edk2/ArmPkg/Library/CompilerIntrinsicsLib/Arm/mullu.asm b/roms/edk2/ArmPkg/Library/CompilerIntrinsicsLib/Arm/mullu.asm
new file mode 100644
index 000000000..8ff0c0669
--- /dev/null
+++ b/roms/edk2/ArmPkg/Library/CompilerIntrinsicsLib/Arm/mullu.asm
@@ -0,0 +1,43 @@
+//------------------------------------------------------------------------------
+//
+// Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
+//
+// SPDX-License-Identifier: BSD-2-Clause-Patent
+//
+//------------------------------------------------------------------------------
+
+
+  EXPORT  __ARM_ll_mullu
+  EXPORT  __aeabi_lmul
+
+  AREA  Math, CODE, READONLY
+
+;
+;INT64
+;EFIAPI
+;__aeabi_lmul (
+;  IN INT64   Multiplicand
+;  IN INT32   Multiplier
+;  );
+;
+__ARM_ll_mullu
+  mov     r3, #0
+// Make upper part of INT64 Multiplier 0 and use __aeabi_lmul
+
+;
+;INT64
+;EFIAPI
+;__aeabi_lmul (
+;  IN INT64   Multiplicand
+;  IN INT64   Multiplier
+;  );
+;
+__aeabi_lmul
+  stmdb   sp!, {lr}
+  mov     lr, r0
+  umull   r0, ip, r2, lr
+  mla     r1, r2, r1, ip
+  mla     r1, r3, lr, r1
+  ldmia   sp!, {pc}
+
+  END