```assembly
;------------------------------------------------------------------------------
;
; Copyright (c) 2006, 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:
;
;   FlushCacheLine.Asm
;
; Abstract:
;
;   AsmFlushCacheLine function
;
; Notes:
;
;------------------------------------------------------------------------------

    .code

;------------------------------------------------------------------------------
; VOID
; EFIAPI
; AsmFlushCacheLine (
;   IN      VOID                      *LinearAddress
;   );
;------------------------------------------------------------------------------
AsmFlushCacheLine   PROC
    clflush [rcx]
    mov     rax, rcx
    ret
AsmFlushCacheLine   ENDP

    END
```

Change VOID into VOID * in function header
user
```assembly
;------------------------------------------------------------------------------
;
; Copyright (c) 2006, 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:
;
;   FlushCacheLine.Asm
;
; Abstract:
;
;   AsmFlushCacheLine function
;
; Notes:
;
;------------------------------------------------------------------------------

    .code

;------------------------------------------------------------------------------
; VOID *
; EFIAPI 
; AsmFlushCacheLine (
;   IN      VOID                      *LinearAddress
;   );
;------------------------------------------------------------------------------
AsmFlushCacheLine   PROC
    clflush [rcx]
    mov     rax, rcx
    ret
AsmFlushCacheLine   ENDP

    END
```
assistant