VirtualBox

source: vbox/trunk/src/VBox/ValidationKit/bootsectors/bs3kit/bs3-cmn-ExtCtxGetYmm.c@ 102157

Last change on this file since 102157 was 102096, checked in by vboxsync, 13 months ago

ValKit/bootsectors: Need to make sure Visual C++ doesn't make use of SSE instructions.

  • Property svn:eol-style set to native
  • Property svn:keywords set to Author Date Id Revision
File size: 3.1 KB
Line 
1/* $Id: bs3-cmn-ExtCtxGetYmm.c 102096 2023-11-15 11:11:59Z vboxsync $ */
2/** @file
3 * BS3Kit - Bs3ExtCtxGetYmm
4 */
5
6/*
7 * Copyright (C) 2007-2023 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 Bs3ExtCtxGetYmm
45BS3_CMN_DEF(PRTUINT256U, Bs3ExtCtxGetYmm,(PCBS3EXTCTX pExtCtx, uint8_t iReg, PRTUINT256U pValue))
46{
47#ifdef _MSC_VER /* No-SSE hack */
48 RTUINT256U volatile RT_FAR *pValueNoSseHack = (RTUINT256U volatile RT_FAR *)pValue; /* No-SSE hack */
49# define pValue pValueNoSseHack
50#endif
51 pValue->au64[0] = 0;
52 pValue->au64[1] = 0;
53 pValue->au64[2] = 0;
54 pValue->au64[3] = 0;
55
56 switch (pExtCtx->enmMethod)
57 {
58 case BS3EXTCTXMETHOD_FXSAVE:
59 if (iReg < RT_ELEMENTS(pExtCtx->Ctx.x87.aXMM))
60 {
61 pValue->au64[0] = pExtCtx->Ctx.x87.aXMM[iReg].uXmm.au64[0];
62 pValue->au64[1] = pExtCtx->Ctx.x87.aXMM[iReg].uXmm.au64[1];
63 }
64 break;
65
66 case BS3EXTCTXMETHOD_XSAVE:
67 if (iReg < RT_ELEMENTS(pExtCtx->Ctx.x.x87.aXMM))
68 {
69 pValue->au64[0] = pExtCtx->Ctx.x87.aXMM[iReg].uXmm.au64[0];
70 pValue->au64[1] = pExtCtx->Ctx.x87.aXMM[iReg].uXmm.au64[1];
71 if (pExtCtx->fXcr0Nominal & XSAVE_C_YMM)
72 {
73 pValue->au64[2] = pExtCtx->Ctx.x.u.YmmHi.aYmmHi[iReg].uXmm.au64[0];
74 pValue->au64[3] = pExtCtx->Ctx.x.u.YmmHi.aYmmHi[iReg].uXmm.au64[1];
75 }
76 }
77 break;
78 }
79 return (PRTUINT256U)pValue;
80}
81
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