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;------------------------------------------------------------------------------
;
; Copyright (c) 2006, Intel Corporation
; All rights reserved. This program and the accompanying materials
; are licensed and made available under the terms and conditions of the BSD License
; which accompanies this distribution. The full text of the license may be found at
; http://opensource.org/licenses/bsd-license.php
;
; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
;
; Module Name:
;
; CpuIdEx.Asm
;
; Abstract:
;
; AsmCpuidEx function
;
; Notes:
;
;------------------------------------------------------------------------------
.code
;------------------------------------------------------------------------------
; UINT32
; EFIAPI
; AsmCpuidEx (
; IN UINT32 RegisterInEax,
; IN UINT32 RegisterInEcx,
; OUT UINT32 *RegisterOutEax OPTIONAL,
; OUT UINT32 *RegisterOutEbx OPTIONAL,
; OUT UINT32 *RegisterOutEcx OPTIONAL,
; OUT UINT32 *RegisterOutEdx OPTIONAL
; )
;------------------------------------------------------------------------------
AsmCpuidEx PROC USES rbx
mov eax, ecx
mov ecx, edx
push rax ; save Index on stack
cpuid
mov r10, [rsp + 38h]
test r10, r10
jz @F
mov [r10], ecx
@@:
mov rcx, r8
jrcxz @F
mov [rcx], eax
@@:
mov rcx, r9
jrcxz @F
mov [rcx], ebx
@@:
mov rcx, [rsp + 40h]
jrcxz @F
mov [rcx], edx
@@:
pop rax ; restore Index to rax as return value
ret
AsmCpuidEx ENDP
END
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