1 files changed, 33 insertions, 0 deletions
diff --git a/src/VBox/Devices/EFI/Firmware/MdePkg/Library/BaseLib/X64/FlushCacheLine.nasm b/src/VBox/Devices/EFI/Firmware/MdePkg/Library/BaseLib/X64/FlushCacheLine.nasm
new file mode 100644
index 00000000..eed1adb2
--- /dev/null
+++ b/src/VBox/Devices/EFI/Firmware/MdePkg/Library/BaseLib/X64/FlushCacheLine.nasm
@@ -0,0 +1,33 @@
+;------------------------------------------------------------------------------
+;
+; Copyright (c) 2006, Intel Corporation. All rights reserved.<BR>
+; SPDX-License-Identifier: BSD-2-Clause-Patent
+;
+; Module Name:
+;
+;   FlushCacheLine.Asm
+;
+; Abstract:
+;
+;   AsmFlushCacheLine function
+;
+; Notes:
+;
+;------------------------------------------------------------------------------
+
+    DEFAULT REL
+    SECTION .text
+
+;------------------------------------------------------------------------------
+; VOID *
+; EFIAPI
+; AsmFlushCacheLine (
+;   IN      VOID                      *LinearAddress
+;   );
+;------------------------------------------------------------------------------
+global ASM_PFX(AsmFlushCacheLine)
+ASM_PFX(AsmFlushCacheLine):
+    clflush [rcx]
+    mov     rax, rcx
+    ret
+