MdePkg/Library/BaseLib/Ia32/ReadMsr64.S

   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
  25
  26
  27
  28 #------------------------------------------------------------------------------
  29 # UINT32
  30 # EFIAPI
  31 # AsmReadMsr32 (
  32 #   IN UINT32  Index
  33 #   );
  34 #------------------------------------------------------------------------------
  35 .global _AsmReadMsr32
  36 _AsmReadMsr32:
  37     #
  38     # AsmReadMsr32 shares the same implementation with AsmReadMsr64 and thus no
  39     # code inside this function
  40     #
  41
  42
  43 #------------------------------------------------------------------------------
  44 # UINT64
  45 # EFIAPI
  46 # AsmReadMsr64 (
  47 #   IN UINT64  Index
  48 #   );
  49 #------------------------------------------------------------------------------
  50 .global _AsmReadMsr64
  51 _AsmReadMsr64:
  52     movl    4(%esp),%ecx
  53     rdmsr
  54     ret
  55
  56
  57