1 files changed, 50 insertions, 0 deletions
diff --git a/Core/MdePkg/Library/BaseMemoryLibOptPei/Ia32/SetMem.S b/Core/MdePkg/Library/BaseMemoryLibOptPei/Ia32/SetMem.S
new file mode 100644
index 0000000000..8c643ae46f
--- /dev/null
+++ b/Core/MdePkg/Library/BaseMemoryLibOptPei/Ia32/SetMem.S
@@ -0,0 +1,50 @@
+#------------------------------------------------------------------------------
+#
+# Copyright (c) 2006 - 2008, 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.S
+#
+# Abstract:
+#
+#   SetMem function
+#
+# Notes:
+#
+#------------------------------------------------------------------------------
+
+ASM_GLOBAL ASM_PFX(InternalMemSetMem)
+
+#------------------------------------------------------------------------------
+#  VOID *
+#  InternalMemSetMem (
+#    IN VOID   *Buffer,
+#    IN UINTN  Count,
+#    IN UINT8  Value
+#    )
+#------------------------------------------------------------------------------
+ASM_PFX(InternalMemSetMem):
+    push    %edi
+    movl    12(%esp),%ecx
+    movb    16(%esp),%al
+    movb    %al, %ah
+    shrd    $16, %eax, %edx
+    shld    $16, %edx, %eax
+    movl    %ecx, %edx
+    movl    8(%esp),%edi
+    shr    $2, %ecx
+    rep stosl
+    movl    %edx, %ecx
+    andl    $3, %ecx
+    rep stosb
+    movl    8(%esp),%eax
+    pop     %edi
+    ret