MdePkg/Library/BaseLib/Ia32/ReadMsr64.asm

   1 ;------------------------------------------------------------------------------
   2 ;
   3 ; Copyright (c) 2006, Intel Corporation
   4 ; All rights reserved. This program and the accompanying materials
   5 ; are licensed and made available under the terms and conditions of the BSD License
   6 ; which accompanies this distribution.  The full text of the license may be found at
   7 ; http://opensource.org/licenses/bsd-license.php
   8 ;
   9 ; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  10 ; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  11 ;
  12 ; Module Name:
  13 ;
  14 ;   ReadMsr64.Asm
  15 ;
  16 ; Abstract:
  17 ;
  18 ;   AsmReadMsr64 function
  19 ;
  20 ; Notes:
  21 ;
  22 ;------------------------------------------------------------------------------
  23
  24     .586P
  25     .model  flat
  26     .code
  27
  28 ;------------------------------------------------------------------------------
  29 ; UINT32
  30 ; EFIAPI
  31 ; AsmReadMsr32 (
  32 ;   IN UINT32  Index
  33 ;   );
  34 ;------------------------------------------------------------------------------
  35 _AsmReadMsr32   PROC
  36     ;
  37     ; AsmReadMsr32 shares the same implementation with AsmReadMsr64 and thus no
  38     ; code inside this function
  39     ;
  40 _AsmReadMsr32   ENDP
  41
  42 ;------------------------------------------------------------------------------
  43 ; UINT64
  44 ; EFIAPI
  45 ; AsmReadMsr64 (
  46 ;   IN UINT64  Index
  47 ;   );
  48 ;------------------------------------------------------------------------------
  49 _AsmReadMsr64   PROC
  50     mov     ecx, [esp + 4]
  51     rdmsr
  52     ret
  53 _AsmReadMsr64   ENDP
  54
  55     END