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Diffstat (limited to 'roms/edk2/MdePkg/Library/BaseMemoryLibOptDxe/X64/SetMem64.nasm')
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diff --git a/roms/edk2/MdePkg/Library/BaseMemoryLibOptDxe/X64/SetMem64.nasm b/roms/edk2/MdePkg/Library/BaseMemoryLibOptDxe/X64/SetMem64.nasm
new file mode 100644
index 000000000..0009f5db2
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+++ b/roms/edk2/MdePkg/Library/BaseMemoryLibOptDxe/X64/SetMem64.nasm
@@ -0,0 +1,40 @@
+;------------------------------------------------------------------------------
+;
+; Copyright (c) 2006, Intel Corporation. All rights reserved.<BR>
+; SPDX-License-Identifier: BSD-2-Clause-Patent
+;
+; Module Name:
+;
+; SetMem64.Asm
+;
+; Abstract:
+;
+; SetMem64 function
+;
+; Notes:
+;
+;------------------------------------------------------------------------------
+
+ DEFAULT REL
+ SECTION .text
+
+;------------------------------------------------------------------------------
+; VOID *
+; InternalMemSetMem64 (
+; IN VOID *Buffer,
+; IN UINTN Count,
+; IN UINT64 Value
+; )
+;------------------------------------------------------------------------------
+global ASM_PFX(InternalMemSetMem64)
+ASM_PFX(InternalMemSetMem64):
+ push rdi
+ push rcx
+ mov rdi, rcx
+ mov rax, r8
+ xchg rcx, rdx
+ rep stosq
+ pop rax
+ pop rdi
+ ret
+