| 1 | /* $Id: SELMInternal.h 56287 2015-06-09 11:15:22Z vboxsync $ */
|
|---|
| 2 | /** @file
|
|---|
| 3 | * SELM - Internal header file.
|
|---|
| 4 | */
|
|---|
| 5 |
|
|---|
| 6 | /*
|
|---|
| 7 | * Copyright (C) 2006-2015 Oracle Corporation
|
|---|
| 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 |
|
|---|
| 18 | #ifndef ___SELMInternal_h
|
|---|
| 19 | #define ___SELMInternal_h
|
|---|
| 20 |
|
|---|
| 21 | #include <VBox/cdefs.h>
|
|---|
| 22 | #include <VBox/types.h>
|
|---|
| 23 | #include <VBox/vmm/stam.h>
|
|---|
| 24 | #include <VBox/vmm/cpum.h>
|
|---|
| 25 | #include <VBox/vmm/pgm.h>
|
|---|
| 26 | #include <VBox/log.h>
|
|---|
| 27 | #include <iprt/x86.h>
|
|---|
| 28 |
|
|---|
| 29 |
|
|---|
| 30 |
|
|---|
| 31 | /** @defgroup grp_selm_int Internals
|
|---|
| 32 | * @ingroup grp_selm
|
|---|
| 33 | * @internal
|
|---|
| 34 | * @{
|
|---|
| 35 | */
|
|---|
| 36 |
|
|---|
| 37 | /** Enable or disable tracking of Shadow GDT/LDT/TSS.
|
|---|
| 38 | * @{
|
|---|
| 39 | */
|
|---|
| 40 | #if defined(VBOX_WITH_RAW_MODE) || defined(DOXYGEN_RUNNING)
|
|---|
| 41 | # define SELM_TRACK_SHADOW_GDT_CHANGES
|
|---|
| 42 | # define SELM_TRACK_SHADOW_LDT_CHANGES
|
|---|
| 43 | # define SELM_TRACK_SHADOW_TSS_CHANGES
|
|---|
| 44 | #endif
|
|---|
| 45 | /** @} */
|
|---|
| 46 |
|
|---|
| 47 | /** Enable or disable tracking of Guest GDT/LDT/TSS.
|
|---|
| 48 | * @{
|
|---|
| 49 | */
|
|---|
| 50 | #if defined(VBOX_WITH_RAW_MODE) || defined(DOXYGEN_RUNNING)
|
|---|
| 51 | # define SELM_TRACK_GUEST_GDT_CHANGES
|
|---|
| 52 | # define SELM_TRACK_GUEST_LDT_CHANGES
|
|---|
| 53 | # define SELM_TRACK_GUEST_TSS_CHANGES
|
|---|
| 54 | #endif
|
|---|
| 55 | /** @} */
|
|---|
| 56 |
|
|---|
| 57 |
|
|---|
| 58 | /** The number of GDTS allocated for our GDT. (full size) */
|
|---|
| 59 | #define SELM_GDT_ELEMENTS 8192
|
|---|
| 60 |
|
|---|
| 61 | /** aHyperSel index to retrieve hypervisor selectors */
|
|---|
| 62 | /** The Flat CS selector used by the VMM inside the GC. */
|
|---|
| 63 | #define SELM_HYPER_SEL_CS 0
|
|---|
| 64 | /** The Flat DS selector used by the VMM inside the GC. */
|
|---|
| 65 | #define SELM_HYPER_SEL_DS 1
|
|---|
| 66 | /** The 64-bit mode CS selector used by the VMM inside the GC. */
|
|---|
| 67 | #define SELM_HYPER_SEL_CS64 2
|
|---|
| 68 | /** The TSS selector used by the VMM inside the GC. */
|
|---|
| 69 | #define SELM_HYPER_SEL_TSS 3
|
|---|
| 70 | /** The TSS selector for taking trap 08 (\#DF). */
|
|---|
| 71 | #define SELM_HYPER_SEL_TSS_TRAP08 4
|
|---|
| 72 | /** Number of GDTs we need for internal use */
|
|---|
| 73 | #define SELM_HYPER_SEL_MAX (SELM_HYPER_SEL_TSS_TRAP08 + 1)
|
|---|
| 74 |
|
|---|
| 75 |
|
|---|
| 76 | /** Default GDT selectors we use for the hypervisor. */
|
|---|
| 77 | #define SELM_HYPER_DEFAULT_SEL_CS ((SELM_GDT_ELEMENTS - 0x1) << 3)
|
|---|
| 78 | #define SELM_HYPER_DEFAULT_SEL_DS ((SELM_GDT_ELEMENTS - 0x2) << 3)
|
|---|
| 79 | #define SELM_HYPER_DEFAULT_SEL_CS64 ((SELM_GDT_ELEMENTS - 0x3) << 3)
|
|---|
| 80 | #define SELM_HYPER_DEFAULT_SEL_TSS ((SELM_GDT_ELEMENTS - 0x4) << 3)
|
|---|
| 81 | #define SELM_HYPER_DEFAULT_SEL_TSS_TRAP08 ((SELM_GDT_ELEMENTS - 0x5) << 3)
|
|---|
| 82 | /** The lowest value default we use. */
|
|---|
| 83 | #define SELM_HYPER_DEFAULT_BASE SELM_HYPER_DEFAULT_SEL_TSS_TRAP08
|
|---|
| 84 |
|
|---|
| 85 | /**
|
|---|
| 86 | * Converts a SELM pointer into a VM pointer.
|
|---|
| 87 | * @returns Pointer to the VM structure the SELM is part of.
|
|---|
| 88 | * @param pSELM Pointer to SELM instance data.
|
|---|
| 89 | */
|
|---|
| 90 | #define SELM2VM(pSELM) ( (PVM)((char *)pSELM - pSELM->offVM) )
|
|---|
| 91 |
|
|---|
| 92 |
|
|---|
| 93 |
|
|---|
| 94 | /**
|
|---|
| 95 | * SELM Data (part of VM)
|
|---|
| 96 | */
|
|---|
| 97 | typedef struct SELM
|
|---|
| 98 | {
|
|---|
| 99 | /** Offset to the VM structure.
|
|---|
| 100 | * See SELM2VM(). */
|
|---|
| 101 | RTINT offVM;
|
|---|
| 102 |
|
|---|
| 103 | /** Flat CS, DS, 64 bit mode CS, TSS & trap 8 TSS. */
|
|---|
| 104 | RTSEL aHyperSel[SELM_HYPER_SEL_MAX];
|
|---|
| 105 |
|
|---|
| 106 | /** @name GDT
|
|---|
| 107 | * @{ */
|
|---|
| 108 | /** Shadow GDT virtual write access handler type. */
|
|---|
| 109 | PGMVIRTHANDLERTYPE hShadowGdtWriteHandlerType;
|
|---|
| 110 | /** Guest GDT virtual write access handler type. */
|
|---|
| 111 | PGMVIRTHANDLERTYPE hGuestGdtWriteHandlerType;
|
|---|
| 112 | /** Pointer to the GCs - R3 Ptr.
|
|---|
| 113 | * This size is governed by SELM_GDT_ELEMENTS. */
|
|---|
| 114 | R3PTRTYPE(PX86DESC) paGdtR3;
|
|---|
| 115 | /** Pointer to the GCs - RC Ptr.
|
|---|
| 116 | * This is not initialized until the first relocation because it's used to
|
|---|
| 117 | * check if the shadow GDT virtual handler requires deregistration. */
|
|---|
| 118 | RCPTRTYPE(PX86DESC) paGdtRC;
|
|---|
| 119 | /** Current (last) Guest's GDTR.
|
|---|
| 120 | * The pGdt member is set to RTRCPTR_MAX if we're not monitoring the guest GDT. */
|
|---|
| 121 | VBOXGDTR GuestGdtr;
|
|---|
| 122 | /** The current (last) effective Guest GDT size. */
|
|---|
| 123 | uint32_t cbEffGuestGdtLimit;
|
|---|
| 124 | /** Indicates that the Guest GDT access handler have been registered. */
|
|---|
| 125 | bool fGDTRangeRegistered;
|
|---|
| 126 | /** @} */
|
|---|
| 127 | bool padding0[3];
|
|---|
| 128 |
|
|---|
| 129 | /** @name LDT
|
|---|
| 130 | * @{ */
|
|---|
| 131 | /** Shadow LDT virtual write access handler type. */
|
|---|
| 132 | PGMVIRTHANDLERTYPE hShadowLdtWriteHandlerType;
|
|---|
| 133 | /** Guest LDT virtual write access handler type. */
|
|---|
| 134 | PGMVIRTHANDLERTYPE hGuestLdtWriteHandlerType;
|
|---|
| 135 | /** R3 pointer to the LDT shadow area in HMA. */
|
|---|
| 136 | R3PTRTYPE(void *) pvLdtR3;
|
|---|
| 137 | /** RC pointer to the LDT shadow area in HMA. */
|
|---|
| 138 | RCPTRTYPE(void *) pvLdtRC;
|
|---|
| 139 | #if GC_ARCH_BITS == 64
|
|---|
| 140 | RTRCPTR padding1;
|
|---|
| 141 | #endif
|
|---|
| 142 | /** The address of the guest LDT.
|
|---|
| 143 | * RTRCPTR_MAX if not monitored. */
|
|---|
| 144 | RTGCPTR GCPtrGuestLdt;
|
|---|
| 145 | /** Current LDT limit, both Guest and Shadow. */
|
|---|
| 146 | uint32_t cbLdtLimit;
|
|---|
| 147 | /** Current LDT offset relative to pvLdtR3/pvLdtRC. */
|
|---|
| 148 | uint32_t offLdtHyper;
|
|---|
| 149 | #if HC_ARCH_BITS == 32 && GC_ARCH_BITS == 64
|
|---|
| 150 | uint32_t padding2[2];
|
|---|
| 151 | #endif
|
|---|
| 152 | /** @} */
|
|---|
| 153 |
|
|---|
| 154 | /** @name TSS
|
|---|
| 155 | * @{ */
|
|---|
| 156 | /** TSS. (This is 16 byte aligned!)
|
|---|
| 157 | * @todo I/O bitmap & interrupt redirection table? */
|
|---|
| 158 | VBOXTSS Tss;
|
|---|
| 159 | /** TSS for trap 08 (\#DF). */
|
|---|
| 160 | VBOXTSS TssTrap08;
|
|---|
| 161 | /** Shadow TSS virtual write access handler type. */
|
|---|
| 162 | PGMVIRTHANDLERTYPE hShadowTssWriteHandlerType;
|
|---|
| 163 | /** Guerst TSS virtual write access handler type. */
|
|---|
| 164 | PGMVIRTHANDLERTYPE hGuestTssWriteHandlerType;
|
|---|
| 165 | /** Monitored shadow TSS address. */
|
|---|
| 166 | RCPTRTYPE(void *) pvMonShwTssRC;
|
|---|
| 167 | #if GC_ARCH_BITS == 64
|
|---|
| 168 | RTRCPTR padding3;
|
|---|
| 169 | #endif
|
|---|
| 170 | /** GC Pointer to the current Guest's TSS.
|
|---|
| 171 | * RTRCPTR_MAX if not monitored. */
|
|---|
| 172 | RTGCPTR GCPtrGuestTss;
|
|---|
| 173 | /** The size of the guest TSS. */
|
|---|
| 174 | uint32_t cbGuestTss;
|
|---|
| 175 | /** Set if it's a 32-bit TSS. */
|
|---|
| 176 | bool fGuestTss32Bit;
|
|---|
| 177 | /** Indicates whether the TSS stack selector & base address need to be refreshed. */
|
|---|
| 178 | bool fSyncTSSRing0Stack;
|
|---|
| 179 | /** The size of the Guest's TSS part we're monitoring. */
|
|---|
| 180 | uint32_t cbMonitoredGuestTss;
|
|---|
| 181 | /** The guest TSS selector at last sync (part of monitoring).
|
|---|
| 182 | * Contains RTSEL_MAX if not set. */
|
|---|
| 183 | RTSEL GCSelTss;
|
|---|
| 184 | /** The last known offset of the I/O bitmap.
|
|---|
| 185 | * This is only used if we monitor the bitmap. */
|
|---|
| 186 | uint16_t offGuestIoBitmap;
|
|---|
| 187 | /** @} */
|
|---|
| 188 | uint16_t padding4[3];
|
|---|
| 189 |
|
|---|
| 190 | /** SELMR3UpdateFromCPUM() profiling. */
|
|---|
| 191 | STAMPROFILE StatUpdateFromCPUM;
|
|---|
| 192 | /** SELMR3SyncTSS() profiling. */
|
|---|
| 193 | STAMPROFILE StatTSSSync;
|
|---|
| 194 |
|
|---|
| 195 | /** GC: The number of handled writes to the Guest's GDT. */
|
|---|
| 196 | STAMCOUNTER StatRCWriteGuestGDTHandled;
|
|---|
| 197 | /** GC: The number of unhandled write to the Guest's GDT. */
|
|---|
| 198 | STAMCOUNTER StatRCWriteGuestGDTUnhandled;
|
|---|
| 199 | /** GC: The number of times writes to Guest's LDT was detected. */
|
|---|
| 200 | STAMCOUNTER StatRCWriteGuestLDT;
|
|---|
| 201 | /** GC: The number of handled writes to the Guest's TSS. */
|
|---|
| 202 | STAMCOUNTER StatRCWriteGuestTSSHandled;
|
|---|
| 203 | /** GC: The number of handled writes to the Guest's TSS where we detected a change. */
|
|---|
| 204 | STAMCOUNTER StatRCWriteGuestTSSHandledChanged;
|
|---|
| 205 | /** GC: The number of handled redir writes to the Guest's TSS where we detected a change. */
|
|---|
| 206 | STAMCOUNTER StatRCWriteGuestTSSRedir;
|
|---|
| 207 | /** GC: The number of unhandled writes to the Guest's TSS. */
|
|---|
| 208 | STAMCOUNTER StatRCWriteGuestTSSUnhandled;
|
|---|
| 209 | /** The number of times we had to relocate our hypervisor selectors. */
|
|---|
| 210 | STAMCOUNTER StatHyperSelsChanged;
|
|---|
| 211 | /** The number of times we had find free hypervisor selectors. */
|
|---|
| 212 | STAMCOUNTER StatScanForHyperSels;
|
|---|
| 213 | /** Counts the times we detected state selectors in SELMR3UpdateFromCPUM. */
|
|---|
| 214 | STAMCOUNTER aStatDetectedStaleSReg[X86_SREG_COUNT];
|
|---|
| 215 | /** Counts the times we were called with already state selectors in
|
|---|
| 216 | * SELMR3UpdateFromCPUM. */
|
|---|
| 217 | STAMCOUNTER aStatAlreadyStaleSReg[X86_SREG_COUNT];
|
|---|
| 218 | /** Counts the times we found a stale selector becomming valid again. */
|
|---|
| 219 | STAMCOUNTER StatStaleToUnstaleSReg;
|
|---|
| 220 | #ifdef VBOX_WITH_STATISTICS
|
|---|
| 221 | /** Times we updated hidden selector registers in CPUMR3UpdateFromCPUM. */
|
|---|
| 222 | STAMCOUNTER aStatUpdatedSReg[X86_SREG_COUNT];
|
|---|
| 223 | STAMCOUNTER StatLoadHidSelGst;
|
|---|
| 224 | STAMCOUNTER StatLoadHidSelShw;
|
|---|
| 225 | #endif
|
|---|
| 226 | STAMCOUNTER StatLoadHidSelReadErrors;
|
|---|
| 227 | STAMCOUNTER StatLoadHidSelGstNoGood;
|
|---|
| 228 | } SELM, *PSELM;
|
|---|
| 229 |
|
|---|
| 230 | RT_C_DECLS_BEGIN
|
|---|
| 231 |
|
|---|
| 232 | PGM_ALL_CB2_DECL(FNPGMVIRTHANDLER) selmGuestGDTWriteHandler;
|
|---|
| 233 | DECLEXPORT(FNPGMRCVIRTPFHANDLER) selmRCGuestGDTWritePfHandler;
|
|---|
| 234 | PGM_ALL_CB2_DECL(FNPGMVIRTHANDLER) selmGuestLDTWriteHandler;
|
|---|
| 235 | DECLEXPORT(FNPGMRCVIRTPFHANDLER) selmRCGuestLDTWritePfHandler;
|
|---|
| 236 | PGM_ALL_CB2_DECL(FNPGMVIRTHANDLER) selmGuestTSSWriteHandler;
|
|---|
| 237 | DECLEXPORT(FNPGMRCVIRTPFHANDLER) selmRCGuestTSSWritePfHandler;
|
|---|
| 238 | DECLEXPORT(FNPGMRCVIRTPFHANDLER) selmRCShadowGDTWritePfHandler;
|
|---|
| 239 | DECLEXPORT(FNPGMRCVIRTPFHANDLER) selmRCShadowLDTWritePfHandler;
|
|---|
| 240 | DECLEXPORT(FNPGMRCVIRTPFHANDLER) selmRCShadowTSSWritePfHandler;
|
|---|
| 241 |
|
|---|
| 242 | void selmRCSyncGdtSegRegs(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pRegFrame, unsigned iGDTEntry);
|
|---|
| 243 | void selmRCGuestGdtPreWriteCheck(PVM pVM, PVMCPU pVCpu, uint32_t offGuestGdt, uint32_t cbWrite, PCPUMCTX pCtx);
|
|---|
| 244 | VBOXSTRICTRC selmRCGuestGdtPostWriteCheck(PVM pVM, PVMCPU pVCpu, uint32_t offGuestTss, uint32_t cbWrite, PCPUMCTX pCtx);
|
|---|
| 245 | VBOXSTRICTRC selmRCGuestTssPostWriteCheck(PVM pVM, PVMCPU pVCpu, uint32_t offGuestTss, uint32_t cbWrite);
|
|---|
| 246 | void selmSetRing1Stack(PVM pVM, uint32_t ss, RTGCPTR32 esp);
|
|---|
| 247 | #ifdef VBOX_WITH_RAW_RING1
|
|---|
| 248 | void selmSetRing2Stack(PVM pVM, uint32_t ss, RTGCPTR32 esp);
|
|---|
| 249 | #endif
|
|---|
| 250 |
|
|---|
| 251 | RT_C_DECLS_END
|
|---|
| 252 |
|
|---|
| 253 | /** @} */
|
|---|
| 254 |
|
|---|
| 255 | #endif
|
|---|
