| ;------------------------------------------------------------------------------ | |
| ; | |
| ; Copyright (c) 2006, Intel Corporation. All rights reserved.<BR> | |
| ; SPDX-License-Identifier: BSD-2-Clause-Patent | |
| ; | |
| ; Module Name: | |
| ; | |
| ; WriteMsr64.Asm | |
| ; | |
| ; Abstract: | |
| ; | |
| ; AsmWriteMsr64 function | |
| ; | |
| ; Notes: | |
| ; | |
| ;------------------------------------------------------------------------------ | |
| DEFAULT REL | |
| SECTION .text | |
| ;------------------------------------------------------------------------------ | |
| ; UINT64 | |
| ; EFIAPI | |
| ; AsmWriteMsr64 ( | |
| ; IN UINT32 Index, | |
| ; IN UINT64 Value | |
| ; ); | |
| ;------------------------------------------------------------------------------ | |
| global ASM_PFX(AsmWriteMsr64) | |
| ASM_PFX(AsmWriteMsr64): | |
| mov rax, rdx ; meanwhile, rax <- return value | |
| shr rdx, 0x20 ; edx:eax contains the value to write | |
| wrmsr | |
| ret | |