1 files changed, 66 insertions, 0 deletions
diff --git a/MdePkg/Library/BaseMemoryLibSse2/X64/SetMem32.asm b/MdePkg/Library/BaseMemoryLibSse2/X64/SetMem32.asm
new file mode 100644
index 000000000000..4c93f89b7aff
--- /dev/null
+++ b/MdePkg/Library/BaseMemoryLibSse2/X64/SetMem32.asm
@@ -0,0 +1,66 @@
+;------------------------------------------------------------------------------
+;
+; 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:
+;
+;------------------------------------------------------------------------------
+
+    .code
+
+;------------------------------------------------------------------------------
+;  VOID *
+;  InternalMemSetMem32 (
+;    IN VOID   *Buffer,
+;    IN UINTN  Count,
+;    IN UINT8  Value
+;    )
+;------------------------------------------------------------------------------
+InternalMemSetMem32 PROC    USES    rdi
+    mov     rdi, rcx
+    mov     r9, rdi
+    xor     rcx, rcx
+    sub     rcx, rdi
+    and     rcx, 15
+    mov     rax, r8
+    jz      @F
+    shr     rcx, 2
+    cmp     rcx, rdx
+    cmova   rcx, rdx
+    sub     rdx, rcx
+    rep     stosd
+@@:
+    mov     rcx, rdx
+    and     edx, 3
+    shr     rcx, 2
+    jz      @SetDwords
+    movd    xmm0, eax
+    pshufd  xmm0, xmm0, 0
+@@:
+    movntdq [rdi], xmm0
+    add     rdi, 16
+    loop    @B
+    mfence
+@SetDwords:
+    mov     ecx, edx
+    rep     stosd
+    mov     rax, r9
+    ret
+InternalMemSetMem32 ENDP
+
+    END