1 files changed, 27 insertions, 0 deletions
diff --git a/MdePkg/Library/CompilerIntrinsicsLib/Arm/ashldi3.S b/MdePkg/Library/CompilerIntrinsicsLib/Arm/ashldi3.S
new file mode 100644
index 0000000000..f5f14509c5
--- /dev/null
+++ b/MdePkg/Library/CompilerIntrinsicsLib/Arm/ashldi3.S
@@ -0,0 +1,27 @@
+#------------------------------------------------------------------------------
+#
+# Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
+#
+# SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+#------------------------------------------------------------------------------
+
+#include <AsmMacroLib.h>
+
+ASM_FUNC(__ashldi3)
+  cmp  r2, #31
+  bls  L2
+  cmp  r2, #63
+  subls  r2, r2, #32
+  movls  r2, r0, asl r2
+  movhi  r2, #0
+  mov  r1, r2
+  mov  r0, #0
+  bx  lr
+L2:
+  cmp  r2, #0
+  rsbne  r3, r2, #32
+  movne  r3, r0, lsr r3
+  movne  r0, r0, asl r2
+  orrne  r1, r3, r1, asl r2
+  bx  lr