;------------------------------------------------------------------------------ ; ; Copyright (c) 2006, Intel Corporation. All rights reserved.<BR> ; 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: ; ; WriteMsr64.Asm ; ; Abstract: ; ; AsmWriteMsr64 function ; ; Notes: ; ;------------------------------------------------------------------------------ .code ;------------------------------------------------------------------------------ ; UINT64 ; EFIAPI ; AsmWriteMsr64 ( ; IN UINT32 Index, ; IN UINT64 Value ; ); ;------------------------------------------------------------------------------ AsmWriteMsr64 PROC mov rax, rdx ; meanwhile, rax <- return value shr rdx, 20h ; edx:eax contains the value to write wrmsr ret AsmWriteMsr64 ENDP END