VirtualBox

source: vbox/trunk/src/VBox/VMM/SELMInternal.h@ 24728

Last change on this file since 24728 was 20374, checked in by vboxsync, 16 years ago

*: s/RT_\(BEGIN|END\)_DECLS/RT_C_DECLS_\1/g

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1/* $Id: SELMInternal.h 20374 2009-06-08 00:43:21Z vboxsync $ */
2/** @file
3 * SELM - Internal header file.
4 */
5
6/*
7 * Copyright (C) 2006-2007 Sun Microsystems, Inc.
8 *
9 * This file is part of VirtualBox Open Source Edition (OSE), as
10 * available from http://www.virtualbox.org. This file is free software;
11 * you can redistribute it and/or modify it under the terms of the GNU
12 * General Public License (GPL) as published by the Free Software
13 * Foundation, in version 2 as it comes in the "COPYING" file of the
14 * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15 * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16 *
17 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
18 * Clara, CA 95054 USA or visit http://www.sun.com if you need
19 * additional information or have any questions.
20 */
21
22#ifndef ___SELMInternal_h
23#define ___SELMInternal_h
24
25#include <VBox/cdefs.h>
26#include <VBox/types.h>
27#include <VBox/stam.h>
28#include <VBox/cpum.h>
29
30
31
32/** @defgroup grp_selm_int Internals
33 * @ingroup grp_selm
34 * @internal
35 * @{
36 */
37
38/** The number of GDTS allocated for our GDT. (full size) */
39#define SELM_GDT_ELEMENTS 8192
40
41/** aHyperSel index to retrieve hypervisor selectors */
42/** The Flat CS selector used by the VMM inside the GC. */
43#define SELM_HYPER_SEL_CS 0
44/** The Flat DS selector used by the VMM inside the GC. */
45#define SELM_HYPER_SEL_DS 1
46/** The 64-bit mode CS selector used by the VMM inside the GC. */
47#define SELM_HYPER_SEL_CS64 2
48/** The TSS selector used by the VMM inside the GC. */
49#define SELM_HYPER_SEL_TSS 3
50/** The TSS selector for taking trap 08 (\#DF). */
51#define SELM_HYPER_SEL_TSS_TRAP08 4
52/** Number of GDTs we need for internal use */
53#define SELM_HYPER_SEL_MAX (SELM_HYPER_SEL_TSS_TRAP08 + 1)
54
55
56/** Default GDT selectors we use for the hypervisor. */
57#define SELM_HYPER_DEFAULT_SEL_CS ((SELM_GDT_ELEMENTS - 0x1) << 3)
58#define SELM_HYPER_DEFAULT_SEL_DS ((SELM_GDT_ELEMENTS - 0x2) << 3)
59#define SELM_HYPER_DEFAULT_SEL_CS64 ((SELM_GDT_ELEMENTS - 0x3) << 3)
60#define SELM_HYPER_DEFAULT_SEL_TSS ((SELM_GDT_ELEMENTS - 0x4) << 3)
61#define SELM_HYPER_DEFAULT_SEL_TSS_TRAP08 ((SELM_GDT_ELEMENTS - 0x5) << 3)
62/** The lowest value default we use. */
63#define SELM_HYPER_DEFAULT_BASE SELM_HYPER_DEFAULT_SEL_TSS_TRAP08
64
65/**
66 * Converts a SELM pointer into a VM pointer.
67 * @returns Pointer to the VM structure the SELM is part of.
68 * @param pSELM Pointer to SELM instance data.
69 */
70#define SELM2VM(pSELM) ( (PVM)((char *)pSELM - pSELM->offVM) )
71
72
73
74/**
75 * SELM Data (part of VM)
76 */
77typedef struct SELM
78{
79 /** Offset to the VM structure.
80 * See SELM2VM(). */
81 RTINT offVM;
82
83 /** Flat CS, DS, 64 bit mode CS, TSS & trap 8 TSS. */
84 RTSEL aHyperSel[SELM_HYPER_SEL_MAX];
85
86 /** Pointer to the GCs - R3 Ptr.
87 * This size is governed by SELM_GDT_ELEMENTS. */
88 R3PTRTYPE(PX86DESC) paGdtR3;
89 /** Pointer to the GCs - RC Ptr.
90 * This is not initialized until the first relocation because it's used to
91 * check if the shadow GDT virtual handler requires deregistration. */
92 RCPTRTYPE(PX86DESC) paGdtRC;
93 /** Current (last) Guest's GDTR.
94 * The pGdt member is set to RTRCPTR_MAX if we're not monitoring the guest GDT. */
95 VBOXGDTR GuestGdtr;
96 /** The current (last) effective Guest GDT size. */
97 RTUINT cbEffGuestGdtLimit;
98
99 uint32_t padding0;
100
101 /** R3 pointer to the LDT shadow area in HMA. */
102 R3PTRTYPE(void *) pvLdtR3;
103 /** RC pointer to the LDT shadow area in HMA. */
104 RCPTRTYPE(void *) pvLdtRC;
105#if GC_ARCH_BITS == 64
106 RTRCPTR padding1;
107#endif
108 /** The address of the guest LDT.
109 * RTRCPTR_MAX if not monitored. */
110 RTGCPTR GCPtrGuestLdt;
111 /** Current LDT limit, both Guest and Shadow. */
112 RTUINT cbLdtLimit;
113 /** Current LDT offset relative to pvLdtR3/pvLdtRC. */
114 RTUINT offLdtHyper;
115#if HC_ARCH_BITS == 32 && GC_ARCH_BITS == 64
116 uint32_t padding2[2];
117#endif
118 /** TSS. (This is 16 byte aligned!)
119 * @todo I/O bitmap & interrupt redirection table? */
120 VBOXTSS Tss;
121
122 /** TSS for trap 08 (\#DF). */
123 VBOXTSS TssTrap08;
124
125 /** Monitored shadow TSS address. */
126 RCPTRTYPE(void *) pvMonShwTssRC;
127#if GC_ARCH_BITS == 64
128 RTRCPTR padding3;
129#endif
130 /** GC Pointer to the current Guest's TSS.
131 * RTRCPTR_MAX if not monitored. */
132 RTGCPTR GCPtrGuestTss;
133 /** The size of the guest TSS. */
134 RTUINT cbGuestTss;
135 /** Set if it's a 32-bit TSS. */
136 bool fGuestTss32Bit;
137 /** The size of the Guest's TSS part we're monitoring. */
138 RTUINT cbMonitoredGuestTss;
139 /** The guest TSS selector at last sync (part of monitoring).
140 * Contains RTSEL_MAX if not set. */
141 RTSEL GCSelTss;
142 /** The last known offset of the I/O bitmap.
143 * This is only used if we monitor the bitmap. */
144 uint16_t offGuestIoBitmap;
145
146 /** Indicates that the Guest GDT access handler have been registered. */
147 bool fGDTRangeRegistered;
148
149 /** Indicates whether LDT/GDT/TSS monitoring and syncing is disabled. */
150 bool fDisableMonitoring;
151
152 /** Indicates whether the TSS stack selector & base address need to be refreshed. */
153 bool fSyncTSSRing0Stack;
154 bool fPadding2[1+2];
155
156 /** SELMR3UpdateFromCPUM() profiling. */
157 STAMPROFILE StatUpdateFromCPUM;
158 /** SELMR3SyncTSS() profiling. */
159 STAMPROFILE StatTSSSync;
160
161 /** GC: The number of handled writes to the Guest's GDT. */
162 STAMCOUNTER StatRCWriteGuestGDTHandled;
163 /** GC: The number of unhandled write to the Guest's GDT. */
164 STAMCOUNTER StatRCWriteGuestGDTUnhandled;
165 /** GC: The number of times writes to Guest's LDT was detected. */
166 STAMCOUNTER StatRCWriteGuestLDT;
167 /** GC: The number of handled writes to the Guest's TSS. */
168 STAMCOUNTER StatRCWriteGuestTSSHandled;
169 /** GC: The number of handled writes to the Guest's TSS where we detected a change. */
170 STAMCOUNTER StatRCWriteGuestTSSHandledChanged;
171 /** GC: The number of handled redir writes to the Guest's TSS where we detected a change. */
172 STAMCOUNTER StatRCWriteGuestTSSRedir;
173 /** GC: The number of unhandled writes to the Guest's TSS. */
174 STAMCOUNTER StatRCWriteGuestTSSUnhandled;
175 /** The number of times we had to relocate our hypervisor selectors. */
176 STAMCOUNTER StatHyperSelsChanged;
177 /** The number of times we had find free hypervisor selectors. */
178 STAMCOUNTER StatScanForHyperSels;
179} SELM, *PSELM;
180
181RT_C_DECLS_BEGIN
182
183VMMRCDECL(int) selmRCGuestGDTWriteHandler(PVM pVM, RTGCUINT uErrorCode, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, RTGCPTR pvRange, uintptr_t offRange);
184VMMRCDECL(int) selmRCGuestLDTWriteHandler(PVM pVM, RTGCUINT uErrorCode, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, RTGCPTR pvRange, uintptr_t offRange);
185VMMRCDECL(int) selmRCGuestTSSWriteHandler(PVM pVM, RTGCUINT uErrorCode, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, RTGCPTR pvRange, uintptr_t offRange);
186
187VMMRCDECL(int) selmRCShadowGDTWriteHandler(PVM pVM, RTGCUINT uErrorCode, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, RTGCPTR pvRange, uintptr_t offRange);
188VMMRCDECL(int) selmRCShadowLDTWriteHandler(PVM pVM, RTGCUINT uErrorCode, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, RTGCPTR pvRange, uintptr_t offRange);
189VMMRCDECL(int) selmRCShadowTSSWriteHandler(PVM pVM, RTGCUINT uErrorCode, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, RTGCPTR pvRange, uintptr_t offRange);
190
191void selmSetRing1Stack(PVM pVM, uint32_t ss, RTGCPTR32 esp);
192
193RT_C_DECLS_END
194
195/** @} */
196
197#endif
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