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/* $Id: bs3-cmn-RegCtxSetGrpSegFromFlat.c $ */
/** @file
* BS3Kit - Bs3RegCtxSetGrpSegFromFlat
*/
/*
* Copyright (C) 2007-2023 Oracle and/or its affiliates.
*
* This file is part of VirtualBox base platform packages, as
* available from https://www.virtualbox.org.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation, in version 3 of the
* License.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <https://www.gnu.org/licenses>.
*
* The contents of this file may alternatively be used under the terms
* of the Common Development and Distribution License Version 1.0
* (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
* in the VirtualBox 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.
*
* SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
*/
/*********************************************************************************************************************************
* Header Files *
*********************************************************************************************************************************/
#include "bs3kit-template-header.h"
#undef Bs3RegCtxSetGrpSegFromFlat
BS3_CMN_DEF(void, Bs3RegCtxSetGrpSegFromFlat,(PBS3REGCTX pRegCtx, PBS3REG pGpr, PRTSEL pSel, RTCCUINTXREG uFlat))
{
if (BS3_MODE_IS_16BIT_CODE(pRegCtx->bMode))
{
uint32_t uFar1616;
if (BS3_MODE_IS_RM_OR_V86(pRegCtx->bMode))
uFar1616 = Bs3SelFlatDataToRealMode(uFlat);
else
uFar1616 = Bs3SelFlatDataToProtFar16(uFlat);
pGpr->u = uFar1616 & UINT16_MAX;
*pSel = uFar1616 >> 16;
}
else
{
pGpr->u = uFlat;
if (BS3_MODE_IS_32BIT_CODE(pRegCtx->bMode))
*pSel = BS3_SEL_R0_DS32;
else
*pSel = BS3_SEL_R0_DS64;
}
/* Adjust CS to the right ring, if not ring-0 or V86 context. */
if ( pRegCtx->bCpl != 0
&& !BS3_MODE_IS_RM_OR_V86(pRegCtx->bMode))
{
if (BS3_SEL_IS_IN_R0_RANGE(*pSel))
*pSel += (uint16_t)pRegCtx->bCpl << BS3_SEL_RING_SHIFT;
*pSel |= pRegCtx->bCpl;
}
}
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