EdkCompatibilityPkg/Foundation/Library/EdkIIGlueLib/Library/BaseLib/Ia32/CpuIdEx.asm

   1 ; Copyright (c) 2004, Intel Corporation
   2 ; All rights reserved. This program and the accompanying materials
   3 ; are licensed and made available under the terms and conditions of the BSD License
   4 ; which accompanies this distribution.  The full text of the license may be found at
   5 ; http://opensource.org/licenses/bsd-license.php
   6 ;
   7 ; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
   8 ; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
   9 ;
  10 ; Module Name:
  11 ;
  12 ;   CpuIdEx.Asm
  13 ;
  14 ; Abstract:
  15 ;
  16 ;   AsmCpuidEx function
  17 ;
  18 ; Notes:
  19 ;
  20 ;------------------------------------------------------------------------------
  21
  22     .686
  23     .model  flat,C
  24     .code
  25
  26 ;------------------------------------------------------------------------------
  27 ;  UINT32
  28 ;  EFIAPI
  29 ;  AsmCpuidEx (
  30 ;    IN   UINT32  RegisterInEax,
  31 ;    IN   UINT32  RegisterInEcx,
  32 ;    OUT  UINT32  *RegisterOutEax  OPTIONAL,
  33 ;    OUT  UINT32  *RegisterOutEbx  OPTIONAL,
  34 ;    OUT  UINT32  *RegisterOutEcx  OPTIONAL,
  35 ;    OUT  UINT32  *RegisterOutEdx  OPTIONAL
  36 ;    )
  37 ;------------------------------------------------------------------------------
  38 AsmCpuidEx  PROC    USES    ebx
  39     push    ebp
  40     mov     ebp, esp
  41     mov     eax, [ebp + 12]
  42     mov     ecx, [ebp + 16]
  43     cpuid
  44     push    ecx
  45     mov     ecx, [ebp + 20]
  46     jecxz   @F
  47     mov     [ecx], eax
  48 @@:
  49     mov     ecx, [ebp + 24]
  50     jecxz   @F
  51     mov     [ecx], ebx
  52 @@:
  53     mov     ecx, [ebp + 28]
  54     jecxz   @F
  55     pop     [ecx]
  56 @@:
  57     mov     edx, [ebp + 32]
  58     jecxz   @F
  59     mov     [ecx], edx
  60 @@:
  61     mov     eax, [ebp + 12]
  62     leave
  63     ret
  64 AsmCpuidEx  ENDP
  65
  66     END