audk/MdePkg/Library/BaseLib/X64/Mwait.nasm

42 lines
1.2 KiB
NASM

;------------------------------------------------------------------------------
;
; 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:
;
; Mwait.Asm
;
; Abstract:
;
; AsmMwait function
;
; Notes:
;
;------------------------------------------------------------------------------
DEFAULT REL
SECTION .text
;------------------------------------------------------------------------------
; UINT64
; EFIAPI
; AsmMwait (
; IN UINTN Eax,
; IN UINTN Ecx
; );
;------------------------------------------------------------------------------
global ASM_PFX(AsmMwait)
ASM_PFX(AsmMwait):
mov eax, ecx
mov ecx, edx
DB 0xf, 1, 0xc9 ; mwait
ret