1 files changed, 60 insertions, 0 deletions
diff --git a/EdkCompatibilityPkg/Foundation/Library/EfiCommonLib/x64/EfiSetMem.asm b/EdkCompatibilityPkg/Foundation/Library/EfiCommonLib/x64/EfiSetMem.asm
new file mode 100644
index 0000000000..7568a520fd
--- /dev/null
+++ b/EdkCompatibilityPkg/Foundation/Library/EfiCommonLib/x64/EfiSetMem.asm
@@ -0,0 +1,60 @@
+;------------------------------------------------------------------------------
+;
+; 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:
+;
+;   SetMem function
+;
+; Notes:
+;
+;------------------------------------------------------------------------------
+
+    .code
+
+;------------------------------------------------------------------------------
+; VOID *
+; EFIAPI
+; EfiCommonLibSetMem (
+;   OUT     VOID                      *Buffer,
+;   IN      UINTN                     Size,
+;   IN      UINT8                     Value
+;   );
+;------------------------------------------------------------------------------
+EfiCommonLibSetMem   PROC    USES    rdi
+    cmp     rdx, 0                      ; if Size == 0, do nothing
+    je      @SetDone
+    mov     rax, r8
+    mov     ah, al
+    DB      48h, 0fh, 6eh, 0c0h         ; movd mm0, rax
+    mov     r8, rcx
+    mov     rdi, r8                     ; rdi <- Buffer
+    mov     rcx, rdx
+    and     edx, 7
+    shr     rcx, 3
+    jz      @SetBytes
+    DB      0fh, 70h, 0C0h, 00h         ; pshufw mm0, mm0, 0h
+@@:
+    DB      48h, 0fh, 7eh, 07h          ; movd [rdi], mm0
+    add     rdi, 8
+    loop    @B
+@SetBytes:
+    mov     ecx, edx
+    rep     stosb
+    mov     rax, r8
+@SetDone:
+    ret
+EfiCommonLibSetMem   ENDP
+
+    END