1 files changed, 47 insertions, 0 deletions
diff --git a/MdePkg/Library/BaseMemoryLibMmx/X64/SetMem64.S b/MdePkg/Library/BaseMemoryLibMmx/X64/SetMem64.S
new file mode 100644
index 000000000000..2f2dd6757a90
--- /dev/null
+++ b/MdePkg/Library/BaseMemoryLibMmx/X64/SetMem64.S
@@ -0,0 +1,47 @@
+#
+# ConvertAsm.py: Automatically generated from SetMem64.asm
+#
+#------------------------------------------------------------------------------
+#
+# Copyright (c) 2006 - 2009, 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:
+#
+#   SetMem64.S
+#
+# Abstract:
+#
+#   SetMem64 function
+#
+# Notes:
+#
+#------------------------------------------------------------------------------
+
+
+#------------------------------------------------------------------------------
+#  VOID *
+#  InternalMemSetMem64 (
+#    IN VOID   *Buffer,
+#    IN UINTN  Count,
+#    IN UINT64 Value
+#    )
+#------------------------------------------------------------------------------
+ASM_GLOBAL ASM_PFX(InternalMemSetMem64)
+ASM_PFX(InternalMemSetMem64):
+    movd      %r8, %mm0                 #Value
+    movq      %rcx, %rax                #rax <- Buffer
+    xchg      %rdx, %rcx                #rcx <- Count
+L0:
+    movntq  %mm0, (%rdx) 
+    addq    $8, %rdx
+    loop    L0
+    mfence
+    ret
+