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;------------------------------------------------------------------------------
;
; Copyright (c) 2006, Intel Corporation. All rights reserved.<BR>
; SPDX-License-Identifier: BSD-2-Clause-Patent
;
; Module Name:
;
; CpuId.Asm
;
; Abstract:
;
; AsmCpuid function
;
; Notes:
;
;------------------------------------------------------------------------------
SECTION .text
;------------------------------------------------------------------------------
; VOID
; EFIAPI
; AsmCpuid (
; IN UINT32 RegisterInEax,
; OUT UINT32 *RegisterOutEax OPTIONAL,
; OUT UINT32 *RegisterOutEbx OPTIONAL,
; OUT UINT32 *RegisterOutEcx OPTIONAL,
; OUT UINT32 *RegisterOutEdx OPTIONAL
; );
;------------------------------------------------------------------------------
global ASM_PFX(AsmCpuid)
ASM_PFX(AsmCpuid):
push ebx
push ebp
mov ebp, esp
mov eax, [ebp + 12]
cpuid
push ecx
mov ecx, [ebp + 16]
jecxz .0
mov [ecx], eax
.0:
mov ecx, [ebp + 20]
jecxz .1
mov [ecx], ebx
.1:
mov ecx, [ebp + 24]
jecxz .2
pop DWORD [ecx]
.2:
mov ecx, [ebp + 28]
jecxz .3
mov [ecx], edx
.3:
mov eax, [ebp + 12]
leave
pop ebx
ret
|
