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Diffstat (limited to '')
-rw-r--r-- | src/VBox/ValidationKit/bootsectors/bs3kit/bs3-cmn-RegCtxSetGrpSegFromFlat.c | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/src/VBox/ValidationKit/bootsectors/bs3kit/bs3-cmn-RegCtxSetGrpSegFromFlat.c b/src/VBox/ValidationKit/bootsectors/bs3kit/bs3-cmn-RegCtxSetGrpSegFromFlat.c new file mode 100644 index 00000000..9c9f525d --- /dev/null +++ b/src/VBox/ValidationKit/bootsectors/bs3kit/bs3-cmn-RegCtxSetGrpSegFromFlat.c @@ -0,0 +1,75 @@ +/* $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; + } +} + |