diff --git a/MdePkg/Library/BaseMemoryLibRepStr/BaseMemoryLibRepStr.inf b/MdePkg/Library/BaseMemoryLibRepStr/BaseMemoryLibRepStr.inf
index 400828d890..64b0595f45 100644
--- a/MdePkg/Library/BaseMemoryLibRepStr/BaseMemoryLibRepStr.inf
+++ b/MdePkg/Library/BaseMemoryLibRepStr/BaseMemoryLibRepStr.inf
@@ -64,6 +64,7 @@
   Ia32/SetMem32.S
   Ia32/SetMem16.nasm
   Ia32/SetMem16.S
+  Ia32/SetMem.nasm
   Ia32/SetMem.S
   Ia32/CopyMem.S
   Ia32/ScanMem64.nasm
@@ -84,6 +85,7 @@
   Ia32/SetMem32.asm
   Ia32/SetMem16.nasm
   Ia32/SetMem16.asm
+  Ia32/SetMem.nasm
   Ia32/SetMem.asm
   Ia32/CopyMem.asm
 
diff --git a/MdePkg/Library/BaseMemoryLibRepStr/Ia32/SetMem.nasm b/MdePkg/Library/BaseMemoryLibRepStr/Ia32/SetMem.nasm
new file mode 100644
index 0000000000..ec51113aad
--- /dev/null
+++ b/MdePkg/Library/BaseMemoryLibRepStr/Ia32/SetMem.nasm
@@ -0,0 +1,44 @@
+;------------------------------------------------------------------------------
+;
+; Copyright (c) 2006, Intel Corporation. All rights reserved.<BR>
+; This program and the accompanying materials
+; are licensed and made available under the terms and conditions of the BSD License
+; which accompanies this distribution.  The full text of the license may be found at
+; http://opensource.org/licenses/bsd-license.php.
+;
+; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+;
+; Module Name:
+;
+;   SetMem.Asm
+;
+; Abstract:
+;
+;   SetMem function
+;
+; Notes:
+;
+;------------------------------------------------------------------------------
+
+    SECTION .text
+
+;------------------------------------------------------------------------------
+;  VOID *
+;  InternalMemSetMem (
+;    IN VOID   *Buffer,
+;    IN UINTN  Count,
+;    IN UINT8  Value
+;    )
+;------------------------------------------------------------------------------
+global ASM_PFX(InternalMemSetMem)
+ASM_PFX(InternalMemSetMem):
+    push    edi
+    mov     eax, [esp + 16]
+    mov     edi, [esp + 8]
+    mov     ecx, [esp + 12]
+    rep     stosb
+    mov     eax, [esp + 8]
+    pop     edi
+    ret
+