--- /dev/null
+;------------------------------------------------------------------------------\r
+;\r
+; Copyright (c) 2006, Intel Corporation\r
+; All rights reserved. This program and the accompanying materials\r
+; are licensed and made available under the terms and conditions of the BSD License\r
+; which accompanies this distribution. The full text of the license may be found at\r
+; http://opensource.org/licenses/bsd-license.php\r
+;\r
+; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
+; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
+;\r
+; Module Name:\r
+;\r
+; SetMem64.asm\r
+;\r
+; Abstract:\r
+;\r
+; SetMem64 function\r
+;\r
+; Notes:\r
+;\r
+;------------------------------------------------------------------------------\r
+\r
+ .code\r
+\r
+;------------------------------------------------------------------------------\r
+; VOID *\r
+; InternalMemSetMem64 (\r
+; IN VOID *Buffer,\r
+; IN UINTN Count,\r
+; IN UINT64 Value\r
+; )\r
+;------------------------------------------------------------------------------\r
+InternalMemSetMem64 PROC\r
+ DB 49h, 0fh, 6eh, 0c0h ; movd mm0, r8 (Value)\r
+ mov rax, rcx ; rax <- Buffer\r
+ xchg rcx, rdx ; rcx <- Count\r
+@@:\r
+ DB 0fh, 0e7h, 02h ; movntq [rdx], mm0\r
+ add rdx, 8\r
+ loop @B\r
+ mfence\r
+ ret\r
+InternalMemSetMem64 ENDP\r
+\r
+ END\r