1 files changed, 53 insertions, 0 deletions
diff --git a/MdePkg/Library/BaseMemoryLibOptDxe/Ia32/SetMem.asm b/MdePkg/Library/BaseMemoryLibOptDxe/Ia32/SetMem.asm
new file mode 100644
index 000000000000..6de9c2ff8077
--- /dev/null
+++ b/MdePkg/Library/BaseMemoryLibOptDxe/Ia32/SetMem.asm
@@ -0,0 +1,53 @@
+;------------------------------------------------------------------------------
+;
+; 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:
+;
+;------------------------------------------------------------------------------
+
+    .386
+    .model  flat,C
+    .code
+
+;------------------------------------------------------------------------------
+;  VOID *
+;  InternalMemSetMem (
+;    IN VOID   *Buffer,
+;    IN UINTN  Count,
+;    IN UINT8  Value
+;    )
+;------------------------------------------------------------------------------
+InternalMemSetMem   PROC    USES    edi
+    mov         ecx, [esp + 12]
+    mov         al,  [esp + 16]
+    mov         ah,  al
+    shrd        edx, eax, 16
+    shld        eax, edx, 16
+    mov         edx, ecx
+    mov         edi, [esp + 8]
+    shr         ecx, 2
+    rep stosd
+    mov         ecx, edx
+    and         ecx, 3
+    rep stosb
+    mov         eax, [esp + 8]
+    ret
+InternalMemSetMem   ENDP
+
+    END