1 files changed, 55 insertions, 0 deletions
diff --git a/MdePkg/Library/BaseMemoryLibMmx/X64/SetMem32.S b/MdePkg/Library/BaseMemoryLibMmx/X64/SetMem32.S
new file mode 100644
index 000000000000..d2dc235a731e
--- /dev/null
+++ b/MdePkg/Library/BaseMemoryLibMmx/X64/SetMem32.S
@@ -0,0 +1,55 @@
+#
+# ConvertAsm.py: Automatically generated from SetMem32.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:
+#
+#   SetMem32.S
+#
+# Abstract:
+#
+#   SetMem32 function
+#
+# Notes:
+#
+#------------------------------------------------------------------------------
+
+
+#------------------------------------------------------------------------------
+#  VOID *
+#  EFIAPI
+#  InternalMemSetMem32 (
+#    IN VOID   *Buffer,
+#    IN UINTN  Count,
+#    IN UINT32 Value
+#    );
+#------------------------------------------------------------------------------
+ASM_GLOBAL ASM_PFX(InternalMemSetMem32)
+ASM_PFX(InternalMemSetMem32):
+    movd    %r8, %mm0                   # mm0 <- Value
+    movq    %rcx, %rax                  # rax <- Buffer
+    xchgq   %rdx, %rcx                  # rcx <- Count  rdx <- Buffer
+    shrq    $1, % rcx                   # rcx <- # of qwords to set
+    jz      L_SetDwords
+   .byte    0x0f, 0x70, 0x0C0, 0x44
+L0:
+    movntq  %mm0, (%rdx) 
+    leaq    8(%rdx), %rdx               # use "lea" to avoid flag changes
+    loop    L0
+    mfence
+L_SetDwords:
+    jnc     L1
+    movd    %mm0, (%rdx) 
+L1:
+    ret
+