1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
|
/* $Id: bs3-cmn-ExtCtxInit.c $ */
/** @file
* BS3Kit - Bs3ExtCtxInit
*/
/*
* Copyright (C) 2007-2019 Oracle Corporation
*
* This file is part of VirtualBox Open Source Edition (OSE), as
* available from http://www.virtualbox.org. This file is free software;
* you can redistribute it and/or modify it under the terms of the GNU
* General Public License (GPL) as published by the Free Software
* Foundation, in version 2 as it comes in the "COPYING" file of the
* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
*
* The contents of this file may alternatively be used under the terms
* of the Common Development and Distribution License Version 1.0
* (CDDL) only, as it comes in the "COPYING.CDDL" file of the
* VirtualBox OSE 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.
*/
/*********************************************************************************************************************************
* Header Files *
*********************************************************************************************************************************/
#include "bs3kit-template-header.h"
#include <iprt/asm-amd64-x86.h>
#undef Bs3ExtCtxInit
BS3_CMN_DEF(PBS3EXTCTX, Bs3ExtCtxInit,(PBS3EXTCTX pExtCtx, uint16_t cbExtCtx, uint64_t fFlags))
{
Bs3MemSet(pExtCtx, 0, cbExtCtx);
if (cbExtCtx >= RT_UOFFSETOF(BS3EXTCTX, Ctx) + sizeof(X86FXSTATE) + sizeof(X86XSAVEHDR))
{
BS3_ASSERT(fFlags & XSAVE_C_X87);
pExtCtx->enmMethod = BS3EXTCTXMETHOD_XSAVE;
pExtCtx->Ctx.x.Hdr.bmXState = fFlags;
}
else if (cbExtCtx >= RT_UOFFSETOF(BS3EXTCTX, Ctx) + sizeof(X86FXSTATE))
{
BS3_ASSERT(fFlags == 0);
pExtCtx->enmMethod = BS3EXTCTXMETHOD_FXSAVE;
}
else
{
BS3_ASSERT(fFlags == 0);
BS3_ASSERT(cbExtCtx >= RT_UOFFSETOF(BS3EXTCTX, Ctx) + sizeof(X86FPUSTATE));
pExtCtx->enmMethod = BS3EXTCTXMETHOD_ANCIENT;
}
pExtCtx->cb = cbExtCtx;
pExtCtx->u16Magic = BS3EXTCTX_MAGIC;
pExtCtx->fXcr0Nominal = fFlags;
pExtCtx->fXcr0Saved = fFlags;
return pExtCtx;
}
|
