; $Id$

;; @file

; IPRT - ASMCpuId_Idx_ECX().

;

;

; Copyright (C) 2012-2013 Oracle Corporation

;

; This file is part of VirtualBox Open Source Edition (OSE), as

; available from http://www.virtualbox.org. This file is free software;

; you can redistribute it and/or modify it under the terms of the GNU

; General Public License (GPL) as published by the Free Software

; Foundation, in version 2 as it comes in the "COPYING" file of the

; VirtualBox OSE distribution. VirtualBox OSE is distributed in the

; hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.

;

; The contents of this file may alternatively be used under the terms

; of the Common Development and Distribution License Version 1.0

; (CDDL) only, as it comes in the "COPYING.CDDL" file of the

; VirtualBox OSE distribution, in which case the provisions of the

; CDDL are applicable instead of those of the GPL.

;

; You may elect to license modified versions of this file under the

; terms and conditions of either the GPL or the CDDL or both.

;

;*******************************************************************************

;* Header Files *

;*******************************************************************************

%include "iprt/asmdefs.mac"

BEGINCODE

;;

; CPUID with EAX and ECX inputs, returning ALL output registers.

;

; @param uOperator x86:ebp+8 gcc:rdi msc:rcx

; @param uIdxECX x86:ebp+c gcc:rsi msc:rdx

; @param pvEAX x86:ebp+10 gcc:rcx msc:r8

; @param pvEBX x86:ebp+14 gcc:rdx msc:r9

; @param pvECX x86:ebp+18 gcc:r8 msc:rsp+28h

; @param pvEDX x86:ebp+1c gcc:r9 msc:rsp+30h

;

; @returns void

;

BEGINPROC_EXPORTED ASMCpuId_Idx_ECX

%ifdef RT_ARCH_AMD64

mov r10, rbx

%ifdef ASM_CALL64_MSC

mov eax, ecx

mov ecx, edx

xor ebx, ebx

xor edx, edx

cpuid

mov [r8], eax

mov [r9], ebx

mov rax, [rsp + 28h]

mov rbx, [rsp + 30h]

mov [rax], ecx

mov [rbx], edx

%else

mov eax, edi

xchg rcx, rsi

mov ecx, ecx ; paranoia: clear upper bits

mov r11, rdx

xor ebx, ebx

xor edx, edx

cpuid

mov [rsi], eax

mov [r11], ebx

mov [r8], ecx

mov [r9], edx

%endif

mov rbx, r10

ret

%elifdef RT_ARCH_X86

push ebp

mov ebp, esp

push ebx

push edi

xor edx, edx

xor ebx, ebx

mov eax, [ebp + 08h]

mov ecx, [ebp + 0ch]

cpuid

mov edi, [ebp + 10h]

mov [edi], eax

mov edi, [ebp + 14h]

mov [edi], ebx

mov edi, [ebp + 18h]

mov [edi], ecx

mov edi, [ebp + 1ch]

mov [edi], edx

pop edi

pop ebx

leave

ret

%else

%error unsupported arch

%endif

ENDPROC ASMCpuId_Idx_ECX