| 1 | ; $Id: bs3-cmn-SwitchToRing0.asm 60657 2016-04-22 15:57:22Z vboxsync $
|
|---|
| 2 | ;; @file
|
|---|
| 3 | ; BS3Kit - Bs3SwitchToRing0
|
|---|
| 4 | ;
|
|---|
| 5 |
|
|---|
| 6 | ;
|
|---|
| 7 | ; Copyright (C) 2007-2016 Oracle Corporation
|
|---|
| 8 | ;
|
|---|
| 9 | ; This file is part of VirtualBox Open Source Edition (OSE), as
|
|---|
| 10 | ; available from http://www.virtualbox.org. This file is free software;
|
|---|
| 11 | ; you can redistribute it and/or modify it under the terms of the GNU
|
|---|
| 12 | ; General Public License (GPL) as published by the Free Software
|
|---|
| 13 | ; Foundation, in version 2 as it comes in the "COPYING" file of the
|
|---|
| 14 | ; VirtualBox OSE distribution. VirtualBox OSE is distributed in the
|
|---|
| 15 | ; hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
|
|---|
| 16 | ;
|
|---|
| 17 | ; The contents of this file may alternatively be used under the terms
|
|---|
| 18 | ; of the Common Development and Distribution License Version 1.0
|
|---|
| 19 | ; (CDDL) only, as it comes in the "COPYING.CDDL" file of the
|
|---|
| 20 | ; VirtualBox OSE distribution, in which case the provisions of the
|
|---|
| 21 | ; CDDL are applicable instead of those of the GPL.
|
|---|
| 22 | ;
|
|---|
| 23 | ; You may elect to license modified versions of this file under the
|
|---|
| 24 | ; terms and conditions of either the GPL or the CDDL or both.
|
|---|
| 25 | ;
|
|---|
| 26 |
|
|---|
| 27 | ;*********************************************************************************************************************************
|
|---|
| 28 | ;* Header Files *
|
|---|
| 29 | ;*********************************************************************************************************************************
|
|---|
| 30 | %include "bs3kit-template-header.mac"
|
|---|
| 31 |
|
|---|
| 32 |
|
|---|
| 33 | ;*********************************************************************************************************************************
|
|---|
| 34 | ;* External Symbols *
|
|---|
| 35 | ;*********************************************************************************************************************************
|
|---|
| 36 | BS3_EXTERN_CMN_FAR Bs3SwitchToRingX
|
|---|
| 37 | TMPL_BEGIN_TEXT
|
|---|
| 38 |
|
|---|
| 39 |
|
|---|
| 40 | ;;
|
|---|
| 41 | ; @cproto BS3_DECL(void) Bs3SwitchToRing0(void);
|
|---|
| 42 | ;
|
|---|
| 43 | ; @remarks Does not require 20h of parameter scratch space in 64-bit mode.
|
|---|
| 44 | ; @uses No GPRs.
|
|---|
| 45 | ;
|
|---|
| 46 | BS3_PROC_BEGIN_CMN Bs3SwitchToRing0, BS3_PBC_HYBRID_0_ARGS
|
|---|
| 47 | %if TMPL_BITS == 64
|
|---|
| 48 | push rcx
|
|---|
| 49 | sub rsp, 20h
|
|---|
| 50 | mov ecx, 0
|
|---|
| 51 | mov [rsp], rcx
|
|---|
| 52 | call Bs3SwitchToRingX
|
|---|
| 53 | add rsp, 20h
|
|---|
| 54 | pop rcx
|
|---|
| 55 | %else
|
|---|
| 56 | push 0
|
|---|
| 57 | TONLY16 push cs
|
|---|
| 58 | call Bs3SwitchToRingX
|
|---|
| 59 | add xSP, xCB
|
|---|
| 60 | %endif
|
|---|
| 61 | BS3_HYBRID_RET
|
|---|
| 62 | BS3_PROC_END_CMN Bs3SwitchToRing0
|
|---|
| 63 |
|
|---|
