VirtualBox

source: vbox/trunk/include/VBox/vmm/gcm.h@ 94882

Last change on this file since 94882 was 94882, checked in by vboxsync, 3 years ago

VMM: First stab at Guest Compatibility Manager, fixing up things like division overflows caused by fast CPUs (see bugref:9735).

  • Property svn:eol-style set to native
  • Property svn:keywords set to Author Date Id Revision
File size: 2.5 KB
Line 
1/** @file
2 * GCM - Guest Compatibility Manager.
3 */
4
5/*
6 * Copyright (C) 2022 Oracle Corporation
7 *
8 * This file is part of VirtualBox Open Source Edition (OSE), as
9 * available from http://www.virtualbox.org. This file is free software;
10 * you can redistribute it and/or modify it under the terms of the GNU
11 * General Public License (GPL) as published by the Free Software
12 * Foundation, in version 2 as it comes in the "COPYING" file of the
13 * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
14 * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
15 *
16 * The contents of this file may alternatively be used under the terms
17 * of the Common Development and Distribution License Version 1.0
18 * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
19 * VirtualBox OSE distribution, in which case the provisions of the
20 * CDDL are applicable instead of those of the GPL.
21 *
22 * You may elect to license modified versions of this file under the
23 * terms and conditions of either the GPL or the CDDL or both.
24 */
25
26#ifndef VBOX_INCLUDED_vmm_gcm_h
27#define VBOX_INCLUDED_vmm_gcm_h
28#ifndef RT_WITHOUT_PRAGMA_ONCE
29# pragma once
30#endif
31
32#include <VBox/cdefs.h>
33#include <VBox/types.h>
34#include <VBox/param.h>
35
36#include <VBox/vmm/cpum.h>
37#include <VBox/vmm/pdmifs.h>
38
39RT_C_DECLS_BEGIN
40
41/** @defgroup grp_gcm The Guest Compatibility Manager API
42 * @ingroup grp_vmm
43 * @{
44 */
45
46/**
47 * GCM Fixer Identifiers.
48 * @remarks Part of saved state!
49 */
50typedef enum GCMFIXERID
51{
52 /** None. */
53 GCMFIXER_NONE = 0,
54 /** DOS division by zero, the worst. Includes Windows 3.x. */
55 GCMFIXER_DBZ_DOS = RT_BIT(0),
56 /** OS/2 (any version) division by zero. */
57 GCMFIXER_DBZ_OS2 = RT_BIT(1),
58 /** Windows 9x division by zero. */
59 GCMFIXER_DBZ_WIN9X = RT_BIT(2),
60 /** 32-bit hack. */
61 GCMFIXER_32BIT_HACK = 0x7fffffff
62} GCMFIXERID;
63AssertCompileSize(GCMFIXERID, sizeof(uint32_t));
64
65
66#ifdef IN_RING3
67/** @defgroup grp_gcm_r3 The GCM Host Context Ring-3 API
68 * @{
69 */
70VMMR3_INT_DECL(int) GCMR3Init(PVM pVM);
71VMMR3_INT_DECL(void) GCMR3Relocate(PVM pVM, RTGCINTPTR offDelta);
72VMMR3_INT_DECL(int) GCMR3Term(PVM pVM);
73VMMR3_INT_DECL(void) GCMR3Reset(PVM pVM);
74/** @} */
75#endif /* IN_RING3 */
76
77VMMDECL(bool) GCMIsEnabled(PVM pVM);
78VMM_INT_DECL(bool) GCMShouldTrapXcptDE(PVMCPUCC pVCpu);
79VMM_INT_DECL(VBOXSTRICTRC) GCMXcptDE(PVMCPUCC pVCpu, PCPUMCTX pCtx, PDISCPUSTATE pDis, uint8_t *pcbInstr);
80/** @} */
81
82RT_C_DECLS_END
83
84#endif /* !VBOX_INCLUDED_vmm_gcm_h */
85
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