| 1 | /* $Id: bs3-cmn-ExtCtxSetMm.c 98103 2023-01-17 14:15:46Z vboxsync $ */
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| 2 | /** @file
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| 3 | * BS3Kit - Bs3ExtCtxSetMm
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2007-2023 Oracle and/or its affiliates.
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| 8 | *
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| 9 | * This file is part of VirtualBox base platform packages, as
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| 10 | * available from https://www.virtualbox.org.
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| 11 | *
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| 12 | * This program is free software; you can redistribute it and/or
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| 13 | * modify it under the terms of the GNU General Public License
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| 14 | * as published by the Free Software Foundation, in version 3 of the
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| 15 | * License.
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| 16 | *
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| 17 | * This program is distributed in the hope that it will be useful, but
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| 18 | * WITHOUT ANY WARRANTY; without even the implied warranty of
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| 19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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| 20 | * General Public License for more details.
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| 21 | *
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| 22 | * You should have received a copy of the GNU General Public License
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| 23 | * along with this program; if not, see <https://www.gnu.org/licenses>.
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| 24 | *
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| 25 | * The contents of this file may alternatively be used under the terms
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| 26 | * of the Common Development and Distribution License Version 1.0
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| 27 | * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
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| 28 | * in the VirtualBox distribution, in which case the provisions of the
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| 29 | * CDDL are applicable instead of those of the GPL.
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| 30 | *
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| 31 | * You may elect to license modified versions of this file under the
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| 32 | * terms and conditions of either the GPL or the CDDL or both.
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| 33 | *
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| 34 | * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
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| 35 | */
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| 36 |
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| 37 |
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| 38 | /*********************************************************************************************************************************
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| 39 | * Header Files *
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| 40 | *********************************************************************************************************************************/
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| 41 | #include "bs3kit-template-header.h"
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| 42 |
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| 43 |
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| 44 | #undef Bs3ExtCtxSetMm
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| 45 | BS3_CMN_DEF(bool, Bs3ExtCtxSetMm,(PBS3EXTCTX pExtCtx, uint8_t iReg, uint64_t uValue, BS3EXTCTXTOPMM enmTop))
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| 46 | {
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| 47 | AssertCompileMembersAtSameOffset(BS3EXTCTX, Ctx.x87.aRegs, BS3EXTCTX, Ctx.x.x87.aRegs);
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| 48 | if (iReg < RT_ELEMENTS(pExtCtx->Ctx.x87.aRegs))
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| 49 | switch (pExtCtx->enmMethod)
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| 50 | {
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| 51 | case BS3EXTCTXMETHOD_FXSAVE:
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| 52 | case BS3EXTCTXMETHOD_XSAVE:
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| 53 | pExtCtx->Ctx.x87.aRegs[iReg].mmx = uValue;
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| 54 | if (enmTop == BS3EXTCTXTOPMM_SET || enmTop == BS3EXTCTXTOPMM_ZERO)
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| 55 | pExtCtx->Ctx.x87.aRegs[iReg].au16[4] = enmTop == BS3EXTCTXTOPMM_SET ? UINT16_MAX : 0;
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| 56 | return true;
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| 57 |
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| 58 | case BS3EXTCTXMETHOD_ANCIENT:
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| 59 | pExtCtx->Ctx.Ancient.regs[iReg].mmx = uValue;
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| 60 | if (enmTop == BS3EXTCTXTOPMM_SET || enmTop == BS3EXTCTXTOPMM_ZERO)
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| 61 | pExtCtx->Ctx.Ancient.regs[iReg].au16[4] = enmTop == BS3EXTCTXTOPMM_SET ? UINT16_MAX : 0;
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| 62 | return true;
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| 63 | }
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| 64 | return false;
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| 65 | }
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| 66 |
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