VirtualBox

source: vbox/trunk/src/VBox/VMM/TRPMInternal.h@ 14789

Last change on this file since 14789 was 14515, checked in by vboxsync, 16 years ago

SUPDrv,SUPLib,VMM: Kicked out the dead VBOX_WITH_IDT_PATCHING code.

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  • Property svn:keywords set to Id
File size: 7.7 KB
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1/* $Id: TRPMInternal.h 14515 2008-11-24 12:33:00Z vboxsync $ */
2/** @file
3 * TRPM - 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 ___TRPMInternal_h
23#define ___TRPMInternal_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/* Enable to allow trap forwarding in GC. */
33#define TRPM_FORWARD_TRAPS_IN_GC
34
35/** First interrupt handler. Used for validating input. */
36#define TRPM_HANDLER_INT_BASE 0x20
37
38__BEGIN_DECLS
39
40
41/** @defgroup grp_trpm_int Internals
42 * @ingroup grp_trpm
43 * @internal
44 * @{
45 */
46
47/** @name TRPMGCTrapIn* flags.
48 * The lower bits are offsets into the CPUMCTXCORE structure.
49 * @{ */
50/** The mask for the operation. */
51#define TRPM_TRAP_IN_OP_MASK 0xffff
52/** Traps on MOV GS, eax. */
53#define TRPM_TRAP_IN_MOV_GS 1
54/** Traps on MOV FS, eax. */
55#define TRPM_TRAP_IN_MOV_FS 2
56/** Traps on MOV ES, eax. */
57#define TRPM_TRAP_IN_MOV_ES 3
58/** Traps on MOV DS, eax. */
59#define TRPM_TRAP_IN_MOV_DS 4
60/** Traps on IRET. */
61#define TRPM_TRAP_IN_IRET 5
62/** Set if this is a V86 resume. */
63#define TRPM_TRAP_IN_V86 RT_BIT(30)
64/** If set this is a hypervisor register set. If cleared it's a guest set. */
65#define TRPM_TRAP_IN_HYPER RT_BIT(31)
66/** @} */
67
68
69/**
70 * Converts a TRPM pointer into a VM pointer.
71 * @returns Pointer to the VM structure the TRPM is part of.
72 * @param pTRPM Pointer to TRPM instance data.
73 */
74#define TRPM2VM(pTRPM) ( (PVM)((char*)pTRPM - pTRPM->offVM) )
75
76
77/**
78 * TRPM Data (part of VM)
79 *
80 * IMPORTANT! Keep the nasm version of this struct up-to-date.
81 */
82#pragma pack(4)
83typedef struct TRPM
84{
85 /** Offset to the VM structure.
86 * See TRPM2VM(). */
87 RTINT offVM;
88
89 /** Active Interrupt or trap vector number.
90 * If not ~0U this indicates that we're currently processing
91 * a interrupt, trap, fault, abort, whatever which have arrived
92 * at that vector number.
93 */
94 RTUINT uActiveVector;
95
96 /** Active trap type. */
97 TRPMEVENT enmActiveType;
98
99 /** Errorcode for the active interrupt/trap. */
100 RTGCUINT uActiveErrorCode; /**< @todo don't use RTGCUINT */
101
102 /** CR2 at the time of the active exception. */
103 RTGCUINTPTR uActiveCR2;
104
105 /** Saved trap vector number. */
106 RTGCUINT uSavedVector; /**< @todo don't use RTGCUINT */
107
108 /** Saved trap type. */
109 TRPMEVENT enmSavedType;
110
111 /** Saved errorcode. */
112 RTGCUINT uSavedErrorCode;
113
114 /** Saved cr2. */
115 RTGCUINTPTR uSavedCR2;
116
117 /** Previous trap vector # - for debugging. */
118 RTGCUINT uPrevVector;
119
120 /** IDT monitoring and sync flag (HWACC). */
121 bool fDisableMonitoring; /** @todo r=bird: bool and 7 byte achPadding1. */
122
123 /** Whether monitoring of the guest IDT is enabled or not.
124 *
125 * This configuration option is provided for speeding up guest like Solaris
126 * that put the IDT on the same page as a whole lot of other data that is
127 * freqently updated. The updates will cause #PFs and have to be interpreted
128 * by PGMInterpretInstruction which is slow compared to raw execution.
129 *
130 * If the guest is well behaved and doesn't change the IDT after loading it,
131 * there is no problem with dropping the IDT monitoring.
132 *
133 * @cfgm /TRPM/SafeToDropGuestIDTMonitoring boolean defaults to false.
134 */
135 bool fSafeToDropGuestIDTMonitoring;
136
137 /** Padding to get the IDTs at a 16 byte alignement. */
138#if GC_ARCH_BITS == 32
139 uint8_t abPadding1[6];
140#else
141 uint8_t abPadding1[14];
142#endif
143 /** IDTs. Aligned at 16 byte offset for speed. */
144 VBOXIDTE aIdt[256];
145
146 /** Bitmap for IDTEs that contain PATM handlers. (needed for relocation) */
147 uint32_t au32IdtPatched[8];
148
149 /** Temporary Hypervisor trap handlers.
150 * NULL means default action. */
151 RCPTRTYPE(void *) aTmpTrapHandlers[256];
152
153 /** RC Pointer to the IDT shadow area (aIdt) in HMA. */
154 RCPTRTYPE(void *) pvMonShwIdtRC;
155 /** Current (last) Guest's IDTR. */
156 VBOXIDTR GuestIdtr;
157
158 /** padding. */
159 uint8_t au8Padding[2];
160
161 /** Checked trap & interrupt handler array */
162 RCPTRTYPE(void *) aGuestTrapHandler[256];
163
164 /** RC: The number of times writes to the Guest IDT were detected. */
165 STAMCOUNTER StatRCWriteGuestIDTFault;
166 STAMCOUNTER StatRCWriteGuestIDTHandled;
167
168 /** HC: Profiling of the TRPMR3SyncIDT() method. */
169 STAMPROFILE StatSyncIDT;
170 /** GC: Statistics for the trap handlers. */
171 STAMPROFILEADV aStatGCTraps[0x14];
172
173 STAMPROFILEADV StatForwardProfR3;
174 STAMPROFILEADV StatForwardProfRZ;
175 STAMCOUNTER StatForwardFailNoHandler;
176 STAMCOUNTER StatForwardFailPatchAddr;
177 STAMCOUNTER StatForwardFailR3;
178 STAMCOUNTER StatForwardFailRZ;
179
180 STAMPROFILE StatTrap0dDisasm;
181 STAMCOUNTER StatTrap0dRdTsc; /**< Number of RDTSC #GPs. */
182
183#ifdef VBOX_WITH_STATISTICS
184 /* R3: Statistics for interrupt handlers (allocated on the hypervisor heap). */
185 R3PTRTYPE(PSTAMCOUNTER) paStatForwardedIRQR3;
186 /* R0: Statistics for interrupt handlers (allocated on the hypervisor heap). */
187 R0PTRTYPE(PSTAMCOUNTER) paStatForwardedIRQR0;
188 /* RC: Statistics for interrupt handlers (allocated on the hypervisor heap). */
189 RCPTRTYPE(PSTAMCOUNTER) paStatForwardedIRQRC;
190#endif
191} TRPM;
192#pragma pack()
193
194/** Pointer to TRPM Data. */
195typedef TRPM *PTRPM;
196
197VMMRCDECL(int) trpmRCGuestIDTWriteHandler(PVM pVM, RTGCUINT uErrorCode, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, RTGCPTR pvRange, uintptr_t offRange);
198VMMRCDECL(int) trpmRCShadowIDTWriteHandler(PVM pVM, RTGCUINT uErrorCode, PCPUMCTXCORE pRegFrame, RTGCPTR pvFault, RTGCPTR pvRange, uintptr_t offRange);
199
200/**
201 * Clear guest trap/interrupt gate handler
202 *
203 * @returns VBox status code.
204 * @param pVM The VM to operate on.
205 * @param iTrap Interrupt/trap number.
206 */
207VMMDECL(int) trpmClearGuestTrapHandler(PVM pVM, unsigned iTrap);
208
209
210#ifdef IN_RING3
211
212/**
213 * Clear passthrough interrupt gate handler (reset to default handler)
214 *
215 * @returns VBox status code.
216 * @param pVM The VM to operate on.
217 * @param iTrap Trap/interrupt gate number.
218 */
219VMMR3DECL(int) trpmR3ClearPassThroughHandler(PVM pVM, unsigned iTrap);
220
221#endif
222
223
224#ifdef IN_RING0
225
226/**
227 * Calls the interrupt gate as if we received an interrupt while in Ring-0.
228 *
229 * @param uIP The interrupt gate IP.
230 * @param SelCS The interrupt gate CS.
231 * @param RSP The interrupt gate RSP. ~0 if no stack switch should take place. (only AMD64)
232 */
233DECLASM(void) trpmR0DispatchHostInterrupt(RTR0UINTPTR uIP, RTSEL SelCS, RTR0UINTPTR RSP);
234
235/**
236 * Issues a software interrupt to the specified interrupt vector.
237 *
238 * @param uActiveVector The vector number.
239 */
240DECLASM(void) trpmR0DispatchHostInterruptSimple(RTUINT uActiveVector);
241
242#endif /* IN_RING0 */
243
244/** @} */
245
246__END_DECLS
247
248#endif
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