VirtualBox

source: vbox/trunk/src/VBox/ValidationKit/bootsectors/bs3kit/bs3-cmn-RegCtxSetGrpSegFromFlat.c@ 106061

Last change on this file since 106061 was 106061, checked in by vboxsync, 3 months ago

Copyright year updates by scm.

  • Property svn:eol-style set to native
  • Property svn:keywords set to Author Date Id Revision
File size: 2.7 KB
Line 
1/* $Id: bs3-cmn-RegCtxSetGrpSegFromFlat.c 106061 2024-09-16 14:03:52Z vboxsync $ */
2/** @file
3 * BS3Kit - Bs3RegCtxSetGrpSegFromFlat
4 */
5
6/*
7 * Copyright (C) 2007-2024 Oracle and/or its affiliates.
8 *
9 * This file is part of VirtualBox base platform packages, as
10 * available from https://www.virtualbox.org.
11 *
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License
14 * as published by the Free Software Foundation, in version 3 of the
15 * License.
16 *
17 * This program is distributed in the hope that it will be useful, but
18 * WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20 * General Public License for more details.
21 *
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, see <https://www.gnu.org/licenses>.
24 *
25 * The contents of this file may alternatively be used under the terms
26 * of the Common Development and Distribution License Version 1.0
27 * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
28 * in the VirtualBox distribution, in which case the provisions of the
29 * CDDL are applicable instead of those of the GPL.
30 *
31 * You may elect to license modified versions of this file under the
32 * terms and conditions of either the GPL or the CDDL or both.
33 *
34 * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
35 */
36
37
38/*********************************************************************************************************************************
39* Header Files *
40*********************************************************************************************************************************/
41#include "bs3kit-template-header.h"
42
43
44#undef Bs3RegCtxSetGrpSegFromFlat
45BS3_CMN_DEF(void, Bs3RegCtxSetGrpSegFromFlat,(PBS3REGCTX pRegCtx, PBS3REG pGpr, PRTSEL pSel, RTCCUINTXREG uFlat))
46{
47 if (BS3_MODE_IS_16BIT_CODE(pRegCtx->bMode))
48 {
49 uint32_t uFar1616;
50 if (BS3_MODE_IS_RM_OR_V86(pRegCtx->bMode))
51 uFar1616 = Bs3SelFlatDataToRealMode(uFlat);
52 else
53 uFar1616 = Bs3SelFlatDataToProtFar16(uFlat);
54 pGpr->u = uFar1616 & UINT16_MAX;
55 *pSel = uFar1616 >> 16;
56 }
57 else
58 {
59 pGpr->u = uFlat;
60 if (BS3_MODE_IS_32BIT_CODE(pRegCtx->bMode))
61 *pSel = BS3_SEL_R0_DS32;
62 else
63 *pSel = BS3_SEL_R0_DS64;
64 }
65
66 /* Adjust CS to the right ring, if not ring-0 or V86 context. */
67 if ( pRegCtx->bCpl != 0
68 && !BS3_MODE_IS_RM_OR_V86(pRegCtx->bMode))
69 {
70 if (BS3_SEL_IS_IN_R0_RANGE(*pSel))
71 *pSel += (uint16_t)pRegCtx->bCpl << BS3_SEL_RING_SHIFT;
72 *pSel |= pRegCtx->bCpl;
73 }
74}
75
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