MdePkg/Library/BaseLib/X64/Mwait.nasm

   1 ;------------------------------------------------------------------------------
   2 ;
   3 ; Copyright (c) 2006, Intel Corporation. All rights reserved.<BR>
   4 ; SPDX-License-Identifier: BSD-2-Clause-Patent
   5 ;
   6 ; Module Name:
   7 ;
   8 ;   Mwait.Asm
   9 ;
  10 ; Abstract:
  11 ;
  12 ;   AsmMwait function
  13 ;
  14 ; Notes:
  15 ;
  16 ;------------------------------------------------------------------------------
  17
  18     DEFAULT REL
  19     SECTION .text
  20
  21 ;------------------------------------------------------------------------------
  22 ; UINT64
  23 ; EFIAPI
  24 ; AsmMwait (
  25 ;   IN      UINTN                     Eax,
  26 ;   IN      UINTN                     Ecx
  27 ;   );
  28 ;------------------------------------------------------------------------------
  29 global ASM_PFX(AsmMwait)
  30 ASM_PFX(AsmMwait):
  31     mov     eax, ecx
  32     mov     ecx, edx
  33     DB      0xf, 1, 0xc9                ; mwait
  34     ret
  35