1 files changed, 55 insertions, 0 deletions
diff --git a/EdkCompatibilityPkg/Foundation/Library/CompilerStub/x64/memsetRep4.asm b/EdkCompatibilityPkg/Foundation/Library/CompilerStub/x64/memsetRep4.asm
new file mode 100644
index 0000000000..6ef0036578
--- /dev/null
+++ b/EdkCompatibilityPkg/Foundation/Library/CompilerStub/x64/memsetRep4.asm
@@ -0,0 +1,55 @@
+;------------------------------------------------------------------------------
+;
+; Copyright (c) 2007, Intel Corporation
+; All rights reserved. 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:
+;
+;   SetMem.asm
+;
+; Abstract:
+;
+;   memset function
+;
+; Notes:
+;
+;------------------------------------------------------------------------------
+
+    .code
+
+;------------------------------------------------------------------------------
+;  VOID *
+;  memset (
+;    OUT VOID   *Buffer,
+;    IN  UINT8  Value,
+;    IN  UINTN  Count
+;    )
+;------------------------------------------------------------------------------
+memset   PROC    USES    rdi
+    cmp     r8, 0                      ; if Size == 0, do nothing
+    mov     r9,  rcx
+    je      @SetDone
+    mov     al,  dl
+    mov     ah,  al
+    shrd    edx, eax, 16
+    shld    eax, edx, 16
+    mov     rdi, rcx
+    mov     rcx, r8
+    shr     rcx, 2
+    rep     stosd
+    mov     rcx, r8
+    and     rcx, 3
+    rep     stosb
+@SetDone:
+    mov     rax, r9
+    ret
+memset   ENDP
+
+    END
+