1 files changed, 52 insertions, 0 deletions
diff --git a/MdePkg/Library/BaseMemoryLibMmx/Ia32/SetMem32.S b/MdePkg/Library/BaseMemoryLibMmx/Ia32/SetMem32.S
new file mode 100644
index 000000000000..acf273d57786
--- /dev/null
+++ b/MdePkg/Library/BaseMemoryLibMmx/Ia32/SetMem32.S
@@ -0,0 +1,52 @@
+#------------------------------------------------------------------------------
+#
+# 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:
+#
+#   SetMem32.asm
+#
+# Abstract:
+#
+#   SetMem32 function
+#
+# Notes:
+#
+#------------------------------------------------------------------------------
+
+ASM_GLOBAL ASM_PFX(InternalMemSetMem32)
+
+#------------------------------------------------------------------------------
+#  VOID *
+#  InternalMemSetMem32 (
+#    IN VOID   *Buffer,
+#    IN UINTN  Count,
+#    IN UINT32 Value
+#    )
+#------------------------------------------------------------------------------
+ASM_PFX(InternalMemSetMem32):
+    movl    4(%esp), %eax
+    movl    8(%esp), %ecx
+    movd    12(%esp), %mm0
+    shrl    %ecx
+    movl    %eax, %edx
+    jz      L1
+    movq    %mm0, %mm1
+    psllq   $32, %mm1
+    por     %mm1, %mm0
+L0:
+    movq    %mm0, (%edx)
+    lea     8(%edx), %edx
+    loop    L0
+L1:
+    jnc     L2
+    movd    %mm0, (%edx)
+L2:
+    ret