1 files changed, 60 insertions, 0 deletions
diff --git a/Core/MdePkg/Library/BaseMemoryLibSse2/X64/SetMem64.S b/Core/MdePkg/Library/BaseMemoryLibSse2/X64/SetMem64.S
new file mode 100644
index 0000000000..c44ec08ae6
--- /dev/null
+++ b/Core/MdePkg/Library/BaseMemoryLibSse2/X64/SetMem64.S
@@ -0,0 +1,60 @@
+#
+# 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):
+    movq    %rcx, %rax                    # rax <- Buffer
+    xchgq   %rdx, %rcx                    # rcx <- Count & rdx <- Buffer
+    testb   $8, %dl
+    movd    %r8, %xmm0
+    jz      L0
+    movq    %r8, (%rdx)
+    addq    $8, %rdx
+    decq    %rcx
+L0:
+    shrq    $1, %rcx
+    jz      L_SetQwords
+    movlhps %xmm0, %xmm0
+L1:
+    movntdq %xmm0, (%rdx)
+    leaq    16(%rdx), %rdx
+    loop    L1
+    mfence
+L_SetQwords:
+    jnc     L2
+    movq    %r8, (%rdx)
+L2:
+    ret
+