e1f414b6a7
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@2704 6f19259b-4bc3-4df7-8a09-765794883524
67 lines
1.7 KiB
NASM
67 lines
1.7 KiB
NASM
;------------------------------------------------------------------------------
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;
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; Copyright (c) 2006, Intel Corporation
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; All rights reserved. This program and the accompanying materials
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; are licensed and made available under the terms and conditions of the BSD License
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; which accompanies this distribution. The full text of the license may be found at
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; http://opensource.org/licenses/bsd-license.php
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;
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; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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;
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; Module Name:
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;
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; CpuId.Asm
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;
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; Abstract:
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;
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; AsmCpuid function
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;
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; Notes:
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;
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;------------------------------------------------------------------------------
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.586P
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.model flat,C
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.code
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;------------------------------------------------------------------------------
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; VOID
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; EFIAPI
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; AsmCpuid (
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; IN UINT32 RegisterInEax,
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; OUT UINT32 *RegisterOutEax OPTIONAL,
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; OUT UINT32 *RegisterOutEbx OPTIONAL,
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; OUT UINT32 *RegisterOutEcx OPTIONAL,
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; OUT UINT32 *RegisterOutEdx OPTIONAL
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; );
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;------------------------------------------------------------------------------
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AsmCpuid PROC USES ebx
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push ebp
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mov ebp, esp
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mov eax, [ebp + 12]
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cpuid
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push ecx
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mov ecx, [ebp + 16]
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jecxz @F
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mov [ecx], eax
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@@:
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mov ecx, [ebp + 20]
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jecxz @F
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mov [ecx], ebx
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@@:
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mov ecx, [ebp + 24]
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jecxz @F
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pop [ecx]
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@@:
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mov ecx, [ebp + 28]
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jecxz @F
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mov [ecx], edx
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@@:
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mov eax, [ebp + 12]
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leave
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ret
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AsmCpuid ENDP
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END
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