VirtualBox

source: vbox/trunk/src/VBox/ValidationKit/bootsectors/bs3kit/bs3-cmn-RegCtxSetGrpSegFromFlat.c@ 92580

Last change on this file since 92580 was 82968, checked in by vboxsync, 5 years ago

Copyright year updates by scm.

  • Property svn:eol-style set to native
  • Property svn:keywords set to Author Date Id Revision
File size: 2.4 KB
Line 
1/* $Id: bs3-cmn-RegCtxSetGrpSegFromFlat.c 82968 2020-02-04 10:35:17Z vboxsync $ */
2/** @file
3 * BS3Kit - Bs3RegCtxSetGrpSegFromFlat
4 */
5
6/*
7 * Copyright (C) 2007-2020 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/*********************************************************************************************************************************
29* Header Files *
30*********************************************************************************************************************************/
31#include "bs3kit-template-header.h"
32
33
34#undef Bs3RegCtxSetGrpSegFromFlat
35BS3_CMN_DEF(void, Bs3RegCtxSetGrpSegFromFlat,(PBS3REGCTX pRegCtx, PBS3REG pGpr, PRTSEL pSel, RTCCUINTXREG uFlat))
36{
37 if (BS3_MODE_IS_16BIT_CODE(pRegCtx->bMode))
38 {
39 uint32_t uFar1616;
40 if (BS3_MODE_IS_RM_OR_V86(pRegCtx->bMode))
41 uFar1616 = Bs3SelFlatDataToRealMode(uFlat);
42 else
43 uFar1616 = Bs3SelFlatDataToProtFar16(uFlat);
44 pGpr->u = uFar1616 & UINT16_MAX;
45 *pSel = uFar1616 >> 16;
46 }
47 else
48 {
49 pGpr->u = uFlat;
50 if (BS3_MODE_IS_32BIT_CODE(pRegCtx->bMode))
51 *pSel = BS3_SEL_R0_DS32;
52 else
53 *pSel = BS3_SEL_R0_DS64;
54 }
55
56 /* Adjust CS to the right ring, if not ring-0 or V86 context. */
57 if ( pRegCtx->bCpl != 0
58 && !BS3_MODE_IS_RM_OR_V86(pRegCtx->bMode))
59 {
60 if (BS3_SEL_IS_IN_R0_RANGE(*pSel))
61 *pSel += (uint16_t)pRegCtx->bCpl << BS3_SEL_RING_SHIFT;
62 *pSel |= pRegCtx->bCpl;
63 }
64}
65
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