| 1 | /* $Id: DBGFInternal.h 55881 2015-05-16 01:02:51Z vboxsync $ */
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| 2 | /** @file
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| 3 | * DBGF - Internal header file.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2006-2013 Oracle Corporation
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| 8 | *
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| 9 | * This file is part of VirtualBox Open Source Edition (OSE), as
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| 10 | * available from http://www.virtualbox.org. This file is free software;
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| 11 | * you can redistribute it and/or modify it under the terms of the GNU
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| 12 | * General Public License (GPL) as published by the Free Software
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| 13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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| 14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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| 15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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| 16 | */
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| 17 |
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| 18 | #ifndef ___DBGFInternal_h
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| 19 | #define ___DBGFInternal_h
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| 20 |
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| 21 | #include <VBox/cdefs.h>
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| 22 | #include <VBox/types.h>
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| 23 | #include <iprt/semaphore.h>
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| 24 | #include <iprt/critsect.h>
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| 25 | #include <iprt/string.h>
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| 26 | #include <iprt/avl.h>
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| 27 | #include <iprt/dbg.h>
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| 28 | #include <VBox/vmm/dbgf.h>
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| 29 |
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| 30 |
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| 31 |
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| 32 | /** @defgroup grp_dbgf_int Internals
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| 33 | * @ingroup grp_dbgf
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| 34 | * @internal
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| 35 | * @{
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| 36 | */
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| 37 |
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| 38 |
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| 39 | /** VMM Debugger Command. */
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| 40 | typedef enum DBGFCMD
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| 41 | {
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| 42 | /** No command.
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| 43 | * This is assigned to the field by the emulation thread after
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| 44 | * a command has been completed. */
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| 45 | DBGFCMD_NO_COMMAND = 0,
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| 46 | /** Halt the VM. */
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| 47 | DBGFCMD_HALT,
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| 48 | /** Resume execution. */
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| 49 | DBGFCMD_GO,
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| 50 | /** Single step execution - stepping into calls. */
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| 51 | DBGFCMD_SINGLE_STEP,
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| 52 | /** Set a breakpoint. */
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| 53 | DBGFCMD_BREAKPOINT_SET,
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| 54 | /** Set a access breakpoint. */
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| 55 | DBGFCMD_BREAKPOINT_SET_ACCESS,
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| 56 | /** Set a REM breakpoint. */
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| 57 | DBGFCMD_BREAKPOINT_SET_REM,
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| 58 | /** Clear a breakpoint. */
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| 59 | DBGFCMD_BREAKPOINT_CLEAR,
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| 60 | /** Enable a breakpoint. */
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| 61 | DBGFCMD_BREAKPOINT_ENABLE,
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| 62 | /** Disable a breakpoint. */
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| 63 | DBGFCMD_BREAKPOINT_DISABLE,
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| 64 | /** List breakpoints. */
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| 65 | DBGFCMD_BREAKPOINT_LIST,
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| 66 |
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| 67 | /** Detaches the debugger.
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| 68 | * Disabling all breakpoints, watch points and the like. */
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| 69 | DBGFCMD_DETACH_DEBUGGER = 0x7ffffffe,
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| 70 | /** Detached the debugger.
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| 71 | * The isn't a command as such, it's just that it's necessary for the
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| 72 | * detaching protocol to be racefree. */
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| 73 | DBGFCMD_DETACHED_DEBUGGER = 0x7fffffff
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| 74 | } DBGFCMD;
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| 75 |
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| 76 | /**
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| 77 | * VMM Debugger Command.
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| 78 | */
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| 79 | typedef union DBGFCMDDATA
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| 80 | {
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| 81 | uint32_t uDummy;
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| 82 | } DBGFCMDDATA;
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| 83 | /** Pointer to DBGF Command Data. */
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| 84 | typedef DBGFCMDDATA *PDBGFCMDDATA;
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| 85 |
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| 86 | /**
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| 87 | * Info type.
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| 88 | */
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| 89 | typedef enum DBGFINFOTYPE
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| 90 | {
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| 91 | /** Invalid. */
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| 92 | DBGFINFOTYPE_INVALID = 0,
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| 93 | /** Device owner. */
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| 94 | DBGFINFOTYPE_DEV,
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| 95 | /** Driver owner. */
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| 96 | DBGFINFOTYPE_DRV,
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| 97 | /** Internal owner. */
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| 98 | DBGFINFOTYPE_INT,
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| 99 | /** External owner. */
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| 100 | DBGFINFOTYPE_EXT
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| 101 | } DBGFINFOTYPE;
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| 102 |
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| 103 |
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| 104 | /** Pointer to info structure. */
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| 105 | typedef struct DBGFINFO *PDBGFINFO;
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| 106 |
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| 107 | #ifdef IN_RING3
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| 108 | /**
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| 109 | * Info structure.
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| 110 | */
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| 111 | typedef struct DBGFINFO
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| 112 | {
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| 113 | /** The flags. */
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| 114 | uint32_t fFlags;
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| 115 | /** Owner type. */
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| 116 | DBGFINFOTYPE enmType;
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| 117 | /** Per type data. */
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| 118 | union
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| 119 | {
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| 120 | /** DBGFINFOTYPE_DEV */
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| 121 | struct
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| 122 | {
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| 123 | /** Device info handler function. */
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| 124 | PFNDBGFHANDLERDEV pfnHandler;
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| 125 | /** The device instance. */
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| 126 | PPDMDEVINS pDevIns;
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| 127 | } Dev;
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| 128 |
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| 129 | /** DBGFINFOTYPE_DRV */
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| 130 | struct
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| 131 | {
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| 132 | /** Driver info handler function. */
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| 133 | PFNDBGFHANDLERDRV pfnHandler;
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| 134 | /** The driver instance. */
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| 135 | PPDMDRVINS pDrvIns;
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| 136 | } Drv;
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| 137 |
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| 138 | /** DBGFINFOTYPE_INT */
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| 139 | struct
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| 140 | {
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| 141 | /** Internal info handler function. */
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| 142 | PFNDBGFHANDLERINT pfnHandler;
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| 143 | } Int;
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| 144 |
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| 145 | /** DBGFINFOTYPE_EXT */
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| 146 | struct
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| 147 | {
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| 148 | /** External info handler function. */
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| 149 | PFNDBGFHANDLEREXT pfnHandler;
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| 150 | /** The user argument. */
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| 151 | void *pvUser;
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| 152 | } Ext;
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| 153 | } u;
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| 154 |
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| 155 | /** Pointer to the description. */
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| 156 | const char *pszDesc;
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| 157 | /** Pointer to the next info structure. */
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| 158 | PDBGFINFO pNext;
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| 159 | /** The identifier name length. */
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| 160 | size_t cchName;
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| 161 | /** The identifier name. (Extends 'beyond' the struct as usual.) */
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| 162 | char szName[1];
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| 163 | } DBGFINFO;
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| 164 | #endif /* IN_RING3 */
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| 165 |
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| 166 |
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| 167 | /**
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| 168 | * Guest OS digger instance.
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| 169 | */
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| 170 | typedef struct DBGFOS
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| 171 | {
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| 172 | /** Pointer to the registration record. */
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| 173 | PCDBGFOSREG pReg;
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| 174 | /** Pointer to the next OS we've registered. */
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| 175 | struct DBGFOS *pNext;
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| 176 | /** List of EMT interface wrappers. */
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| 177 | struct DBGFOSEMTWRAPPER *pWrapperHead;
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| 178 | /** The instance data (variable size). */
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| 179 | uint8_t abData[16];
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| 180 | } DBGFOS;
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| 181 | /** Pointer to guest OS digger instance. */
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| 182 | typedef DBGFOS *PDBGFOS;
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| 183 | /** Pointer to const guest OS digger instance. */
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| 184 | typedef DBGFOS const *PCDBGFOS;
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| 185 |
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| 186 |
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| 187 |
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| 188 | /**
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| 189 | * Converts a DBGF pointer into a VM pointer.
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| 190 | * @returns Pointer to the VM structure the CPUM is part of.
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| 191 | * @param pDBGF Pointer to DBGF instance data.
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| 192 | */
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| 193 | #define DBGF2VM(pDBGF) ( (PVM)((char*)pDBGF - pDBGF->offVM) )
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| 194 |
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| 195 |
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| 196 | /**
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| 197 | * DBGF Data (part of VM)
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| 198 | */
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| 199 | typedef struct DBGF
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| 200 | {
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| 201 | /** Offset to the VM structure. */
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| 202 | int32_t offVM;
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| 203 |
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| 204 | /** Debugger Attached flag.
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| 205 | * Set if a debugger is attached, elsewise it's clear.
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| 206 | */
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| 207 | bool volatile fAttached;
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| 208 |
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| 209 | /** Stopped in the Hypervisor.
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| 210 | * Set if we're stopped on a trace, breakpoint or assertion inside
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| 211 | * the hypervisor and have to restrict the available operations.
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| 212 | */
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| 213 | bool volatile fStoppedInHyper;
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| 214 |
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| 215 | /**
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| 216 | * Ping-Pong construct where the Ping side is the VMM and the Pong side
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| 217 | * the Debugger.
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| 218 | */
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| 219 | RTPINGPONG PingPong;
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| 220 |
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| 221 | /** The Event to the debugger.
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| 222 | * The VMM will ping the debugger when the event is ready. The event is
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| 223 | * either a response to a command or to a break/watch point issued
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| 224 | * previously.
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| 225 | */
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| 226 | DBGFEVENT DbgEvent;
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| 227 |
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| 228 | /** The Command to the VMM.
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| 229 | * Operated in an atomic fashion since the VMM will poll on this.
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| 230 | * This means that a the command data must be written before this member
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| 231 | * is set. The VMM will reset this member to the no-command state
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| 232 | * when it have processed it.
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| 233 | */
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| 234 | DBGFCMD volatile enmVMMCmd;
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| 235 | /** The Command data.
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| 236 | * Not all commands take data. */
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| 237 | DBGFCMDDATA VMMCmdData;
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| 238 |
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| 239 | /** The number of hardware breakpoints. */
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| 240 | uint32_t cHwBreakpoints;
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| 241 | /** The number of active breakpoints. */
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| 242 | uint32_t cBreakpoints;
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| 243 | /** Array of hardware breakpoints. (0..3)
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| 244 | * This is shared among all the CPUs because life is much simpler that way. */
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| 245 | DBGFBP aHwBreakpoints[4];
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| 246 | /** Array of int 3 and REM breakpoints. (4..)
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| 247 | * @remark This is currently a fixed size array for reasons of simplicity. */
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| 248 | DBGFBP aBreakpoints[32];
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| 249 | } DBGF;
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| 250 | /** Pointer to DBGF Data. */
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| 251 | typedef DBGF *PDBGF;
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| 252 |
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| 253 |
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| 254 | /** Converts a DBGFCPU pointer into a VM pointer. */
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| 255 | #define DBGFCPU_2_VM(pDbgfCpu) ((PVM)((uint8_t *)(pDbgfCpu) + (pDbgfCpu)->offVM))
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| 256 |
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| 257 | /**
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| 258 | * The per CPU data for DBGF.
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| 259 | */
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| 260 | typedef struct DBGFCPU
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| 261 | {
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| 262 | /** The offset into the VM structure.
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| 263 | * @see DBGFCPU_2_VM(). */
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| 264 | uint32_t offVM;
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| 265 |
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| 266 | /** Current active breakpoint (id).
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| 267 | * This is ~0U if not active. It is set when a execution engine
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| 268 | * encounters a breakpoint and returns VINF_EM_DBG_BREAKPOINT. This is
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| 269 | * currently not used for REM breakpoints because of the lazy coupling
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| 270 | * between VBox and REM. */
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| 271 | uint32_t iActiveBp;
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| 272 | /** Set if we're singlestepping in raw mode.
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| 273 | * This is checked and cleared in the \#DB handler. */
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| 274 | bool fSingleSteppingRaw;
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| 275 |
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| 276 | /** Padding the structure to 16 bytes. */
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| 277 | bool afReserved[7];
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| 278 | } DBGFCPU;
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| 279 | /** Pointer to DBGFCPU data. */
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| 280 | typedef DBGFCPU *PDBGFCPU;
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| 281 |
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| 282 | struct DBGFOSEMTWRAPPER;
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| 283 |
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| 284 | /**
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| 285 | * The DBGF data kept in the UVM.
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| 286 | */
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| 287 | typedef struct DBGFUSERPERVM
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| 288 | {
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| 289 | /** The address space database lock. */
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| 290 | RTSEMRW hAsDbLock;
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| 291 | /** The address space handle database. (Protected by hAsDbLock.) */
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| 292 | R3PTRTYPE(AVLPVTREE) AsHandleTree;
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| 293 | /** The address space process id database. (Protected by hAsDbLock.) */
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| 294 | R3PTRTYPE(AVLU32TREE) AsPidTree;
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| 295 | /** The address space name database. (Protected by hAsDbLock.) */
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| 296 | R3PTRTYPE(RTSTRSPACE) AsNameSpace;
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| 297 | /** Special address space aliases. (Protected by hAsDbLock.) */
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| 298 | RTDBGAS volatile ahAsAliases[DBGF_AS_COUNT];
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| 299 | /** For lazily populating the aliased address spaces. */
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| 300 | bool volatile afAsAliasPopuplated[DBGF_AS_COUNT];
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| 301 | /** Alignment padding. */
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| 302 | bool afAlignment1[2];
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| 303 | /** Debug configuration. */
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| 304 | R3PTRTYPE(RTDBGCFG) hDbgCfg;
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| 305 |
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| 306 | /** The register database lock. */
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| 307 | RTSEMRW hRegDbLock;
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| 308 | /** String space for looking up registers. (Protected by hRegDbLock.) */
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| 309 | R3PTRTYPE(RTSTRSPACE) RegSpace;
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| 310 | /** String space holding the register sets. (Protected by hRegDbLock.) */
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| 311 | R3PTRTYPE(RTSTRSPACE) RegSetSpace;
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| 312 | /** The number of registers (aliases, sub-fields and the special CPU
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| 313 | * register aliases (eg AH) are not counted). */
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| 314 | uint32_t cRegs;
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| 315 | /** For early initialization by . */
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| 316 | bool volatile fRegDbInitialized;
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| 317 | /** Alignment padding. */
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| 318 | bool afAlignment2[3];
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| 319 |
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| 320 | /** Critical section protecting the Guest OS Digger data, the info handlers
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| 321 | * and the plugins. These share to give the best possible plugin unload
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| 322 | * race protection. */
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| 323 | RTCRITSECTRW CritSect;
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| 324 | /** Head of the LIFO of loaded DBGF plugins. */
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| 325 | R3PTRTYPE(struct DBGFPLUGIN *) pPlugInHead;
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| 326 | /** The current Guest OS digger. */
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| 327 | R3PTRTYPE(PDBGFOS) pCurOS;
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| 328 | /** The head of the Guest OS digger instances. */
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| 329 | R3PTRTYPE(PDBGFOS) pOSHead;
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| 330 | /** List of registered info handlers. */
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| 331 | R3PTRTYPE(PDBGFINFO) pInfoFirst;
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| 332 |
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| 333 | } DBGFUSERPERVM;
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| 334 | typedef DBGFUSERPERVM *PDBGFUSERPERVM;
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| 335 | typedef DBGFUSERPERVM const *PCDBGFUSERPERVM;
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| 336 |
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| 337 | /**
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| 338 | * The per-CPU DBGF data kept in the UVM.
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| 339 | */
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| 340 | typedef struct DBGFUSERPERVMCPU
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| 341 | {
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| 342 | /** The guest register set for this CPU. Can be NULL. */
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| 343 | R3PTRTYPE(struct DBGFREGSET *) pGuestRegSet;
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| 344 | /** The hypervisor register set for this CPU. Can be NULL. */
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| 345 | R3PTRTYPE(struct DBGFREGSET *) pHyperRegSet;
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| 346 | } DBGFUSERPERVMCPU;
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| 347 |
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| 348 |
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| 349 | int dbgfR3AsInit(PUVM pUVM);
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| 350 | void dbgfR3AsTerm(PUVM pUVM);
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| 351 | void dbgfR3AsRelocate(PUVM pUVM, RTGCUINTPTR offDelta);
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| 352 | int dbgfR3BpInit(PVM pVM);
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| 353 | int dbgfR3InfoInit(PUVM pUVM);
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| 354 | int dbgfR3InfoTerm(PUVM pUVM);
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| 355 | int dbgfR3OSInit(PUVM pUVM);
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| 356 | void dbgfR3OSTerm(PUVM pUVM);
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| 357 | int dbgfR3RegInit(PUVM pUVM);
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| 358 | void dbgfR3RegTerm(PUVM pUVM);
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| 359 | int dbgfR3TraceInit(PVM pVM);
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| 360 | void dbgfR3TraceRelocate(PVM pVM);
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| 361 | void dbgfR3TraceTerm(PVM pVM);
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| 362 | int dbgfR3PlugInInit(PUVM pUVM);
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| 363 | void dbgfR3PlugInTerm(PUVM pUVM);
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| 364 |
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| 365 |
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| 366 |
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| 367 | #ifdef IN_RING3
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| 368 |
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| 369 | #endif
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| 370 |
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| 371 | /** @} */
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| 372 |
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| 373 | #endif
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