| 1 | /* $Id: DBGFMem.cpp 12989 2008-10-06 02:15:39Z vboxsync $ */
|
|---|
| 2 | /** @file
|
|---|
| 3 | * DBGF - Debugger Facility, Memory Methods.
|
|---|
| 4 | */
|
|---|
| 5 |
|
|---|
| 6 | /*
|
|---|
| 7 | * Copyright (C) 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 |
|
|---|
| 23 | /*******************************************************************************
|
|---|
| 24 | * Header Files *
|
|---|
| 25 | *******************************************************************************/
|
|---|
| 26 | #define LOG_GROUP LOG_GROUP_DBGF
|
|---|
| 27 | #include <VBox/dbgf.h>
|
|---|
| 28 | #include <VBox/pgm.h>
|
|---|
| 29 | #include "DBGFInternal.h"
|
|---|
| 30 | #include <VBox/vm.h>
|
|---|
| 31 | #include <VBox/err.h>
|
|---|
| 32 | #include <VBox/log.h>
|
|---|
| 33 |
|
|---|
| 34 |
|
|---|
| 35 |
|
|---|
| 36 | /**
|
|---|
| 37 | * Scan guest memory for an exact byte string.
|
|---|
| 38 | *
|
|---|
| 39 | * @returns VBox status code.
|
|---|
| 40 | * @param pVM The VM handle.
|
|---|
| 41 | * @param pAddress Where to store the mixed address.
|
|---|
| 42 | * @param cbRange The number of bytes to scan.
|
|---|
| 43 | * @param pabNeedle What to search for - exact search.
|
|---|
| 44 | * @param cbNeedle Size of the search byte string.
|
|---|
| 45 | * @param pHitAddress Where to put the address of the first hit.
|
|---|
| 46 | */
|
|---|
| 47 | static DECLCALLBACK(int) dbgfR3MemScan(PVM pVM, PCDBGFADDRESS pAddress, RTGCUINTPTR cbRange, const uint8_t *pabNeedle, size_t cbNeedle,
|
|---|
| 48 | PDBGFADDRESS pHitAddress)
|
|---|
| 49 | {
|
|---|
| 50 | /*
|
|---|
| 51 | * Validate the input we use, PGM does the rest.
|
|---|
| 52 | */
|
|---|
| 53 | if (!DBGFR3AddrIsValid(pVM, pAddress))
|
|---|
| 54 | return VERR_INVALID_POINTER;
|
|---|
| 55 | if (!VALID_PTR(pHitAddress))
|
|---|
| 56 | return VERR_INVALID_POINTER;
|
|---|
| 57 | if (DBGFADDRESS_IS_HMA(pAddress))
|
|---|
| 58 | return VERR_INVALID_POINTER;
|
|---|
| 59 |
|
|---|
| 60 | /*
|
|---|
| 61 | * Select DBGF worker by addressing mode.
|
|---|
| 62 | */
|
|---|
| 63 | int rc;
|
|---|
| 64 | PGMMODE enmMode = PGMGetGuestMode(pVM);
|
|---|
| 65 | if ( enmMode == PGMMODE_REAL
|
|---|
| 66 | || enmMode == PGMMODE_PROTECTED
|
|---|
| 67 | || DBGFADDRESS_IS_PHYS(pAddress)
|
|---|
| 68 | )
|
|---|
| 69 | {
|
|---|
| 70 | RTGCPHYS PhysHit;
|
|---|
| 71 | rc = PGMR3DbgScanPhysical(pVM, pAddress->FlatPtr, cbRange, pabNeedle, cbNeedle, &PhysHit);
|
|---|
| 72 | if (RT_SUCCESS(rc))
|
|---|
| 73 | DBGFR3AddrFromPhys(pVM, pHitAddress, PhysHit);
|
|---|
| 74 | }
|
|---|
| 75 | else
|
|---|
| 76 | {
|
|---|
| 77 | RTGCUINTPTR GCPtrHit;
|
|---|
| 78 | rc = PGMR3DbgScanVirtual(pVM, pAddress->FlatPtr, cbRange, pabNeedle, cbNeedle, &GCPtrHit);
|
|---|
| 79 | if (RT_SUCCESS(rc))
|
|---|
| 80 | DBGFR3AddrFromFlat(pVM, pHitAddress, GCPtrHit);
|
|---|
| 81 | }
|
|---|
| 82 |
|
|---|
| 83 | return rc;
|
|---|
| 84 | }
|
|---|
| 85 |
|
|---|
| 86 |
|
|---|
| 87 | /**
|
|---|
| 88 | * Scan guest memory for an exact byte string.
|
|---|
| 89 | *
|
|---|
| 90 | * @returns VBox status codes:
|
|---|
| 91 | * @retval VINF_SUCCESS and *pGCPtrHit on success.
|
|---|
| 92 | * @retval VERR_DBGF_MEM_NOT_FOUND if not found.
|
|---|
| 93 | * @retval VERR_INVALID_POINTER if any of the pointer arguments are invalid.
|
|---|
| 94 | * @retval VERR_INVALID_ARGUMENT if any other arguments are invalid.
|
|---|
| 95 | *
|
|---|
| 96 | * @param pVM The VM handle.
|
|---|
| 97 | * @param pAddress Where to store the mixed address.
|
|---|
| 98 | * @param cbRange The number of bytes to scan.
|
|---|
| 99 | * @param pabNeedle What to search for - exact search.
|
|---|
| 100 | * @param cbNeedle Size of the search byte string.
|
|---|
| 101 | * @param pHitAddress Where to put the address of the first hit.
|
|---|
| 102 | *
|
|---|
| 103 | * @thread Any thread.
|
|---|
| 104 | */
|
|---|
| 105 | VMMR3DECL(int) DBGFR3MemScan(PVM pVM, PCDBGFADDRESS pAddress, RTGCUINTPTR cbRange, const uint8_t *pabNeedle, size_t cbNeedle, PDBGFADDRESS pHitAddress)
|
|---|
| 106 | {
|
|---|
| 107 | PVMREQ pReq;
|
|---|
| 108 | int rc = VMR3ReqCall(pVM, &pReq, RT_INDEFINITE_WAIT, (PFNRT)dbgfR3MemScan, 6,
|
|---|
| 109 | pVM, pAddress, cbRange, pabNeedle, cbNeedle, pHitAddress);
|
|---|
| 110 | if (VBOX_SUCCESS(rc))
|
|---|
| 111 | rc = pReq->iStatus;
|
|---|
| 112 | VMR3ReqFree(pReq);
|
|---|
| 113 |
|
|---|
| 114 | return rc;
|
|---|
| 115 | }
|
|---|
| 116 |
|
|---|
| 117 |
|
|---|
| 118 | /**
|
|---|
| 119 | * Read guest memory.
|
|---|
| 120 | *
|
|---|
| 121 | * @returns VBox status code.
|
|---|
| 122 | * @param pVM Pointer to the shared VM structure.
|
|---|
| 123 | * @param pAddress Where to start reading.
|
|---|
| 124 | * @param pvBuf Where to store the data we've read.
|
|---|
| 125 | * @param cbRead The number of bytes to read.
|
|---|
| 126 | */
|
|---|
| 127 | static DECLCALLBACK(int) dbgfR3MemRead(PVM pVM, PCDBGFADDRESS pAddress, void *pvBuf, size_t cbRead)
|
|---|
| 128 | {
|
|---|
| 129 | /*
|
|---|
| 130 | * Validate the input we use, PGM does the rest.
|
|---|
| 131 | */
|
|---|
| 132 | if (!DBGFR3AddrIsValid(pVM, pAddress))
|
|---|
| 133 | return VERR_INVALID_POINTER;
|
|---|
| 134 | if (!VALID_PTR(pvBuf))
|
|---|
| 135 | return VERR_INVALID_POINTER;
|
|---|
| 136 | if (DBGFADDRESS_IS_HMA(pAddress))
|
|---|
| 137 | return VERR_INVALID_POINTER;
|
|---|
| 138 |
|
|---|
| 139 | /*
|
|---|
| 140 | * Select DBGF worker by addressing mode.
|
|---|
| 141 | */
|
|---|
| 142 | int rc;
|
|---|
| 143 | PGMMODE enmMode = PGMGetGuestMode(pVM);
|
|---|
| 144 | if ( enmMode == PGMMODE_REAL
|
|---|
| 145 | || enmMode == PGMMODE_PROTECTED
|
|---|
| 146 | || DBGFADDRESS_IS_PHYS(pAddress) )
|
|---|
| 147 | rc = PGMPhysReadGCPhys(pVM, pvBuf, pAddress->FlatPtr, cbRead);
|
|---|
| 148 | else
|
|---|
| 149 | rc = PGMPhysReadGCPtr(pVM, pvBuf, pAddress->FlatPtr, cbRead);
|
|---|
| 150 | return rc;
|
|---|
| 151 | }
|
|---|
| 152 |
|
|---|
| 153 |
|
|---|
| 154 | /**
|
|---|
| 155 | * Read guest memory.
|
|---|
| 156 | *
|
|---|
| 157 | * @returns VBox status code.
|
|---|
| 158 | * @param pVM Pointer to the shared VM structure.
|
|---|
| 159 | * @param pAddress Where to start reading.
|
|---|
| 160 | * @param pvBuf Where to store the data we've read.
|
|---|
| 161 | * @param cbRead The number of bytes to read.
|
|---|
| 162 | */
|
|---|
| 163 | VMMR3DECL(int) DBGFR3MemRead(PVM pVM, PCDBGFADDRESS pAddress, void *pvBuf, size_t cbRead)
|
|---|
| 164 | {
|
|---|
| 165 | PVMREQ pReq;
|
|---|
| 166 | int rc = VMR3ReqCallU(pVM->pUVM, &pReq, RT_INDEFINITE_WAIT, 0, (PFNRT)dbgfR3MemRead, 4,
|
|---|
| 167 | pVM, pAddress, pvBuf, cbRead);
|
|---|
| 168 | if (VBOX_SUCCESS(rc))
|
|---|
| 169 | rc = pReq->iStatus;
|
|---|
| 170 | VMR3ReqFree(pReq);
|
|---|
| 171 |
|
|---|
| 172 | return rc;
|
|---|
| 173 | }
|
|---|
| 174 |
|
|---|
| 175 |
|
|---|
| 176 | /**
|
|---|
| 177 | * Read a zero terminated string from guest memory.
|
|---|
| 178 | *
|
|---|
| 179 | * @returns VBox status code.
|
|---|
| 180 | * @param pVM Pointer to the shared VM structure.
|
|---|
| 181 | * @param pAddress Where to start reading.
|
|---|
| 182 | * @param pszBuf Where to store the string.
|
|---|
| 183 | * @param cchBuf The size of the buffer.
|
|---|
| 184 | */
|
|---|
| 185 | static DECLCALLBACK(int) dbgfR3MemReadString(PVM pVM, PCDBGFADDRESS pAddress, char *pszBuf, size_t cchBuf)
|
|---|
| 186 | {
|
|---|
| 187 | /*
|
|---|
| 188 | * Validate the input we use, PGM does the rest.
|
|---|
| 189 | */
|
|---|
| 190 | if (!DBGFR3AddrIsValid(pVM, pAddress))
|
|---|
| 191 | return VERR_INVALID_POINTER;
|
|---|
| 192 | if (!VALID_PTR(pszBuf))
|
|---|
| 193 | return VERR_INVALID_POINTER;
|
|---|
| 194 | if (DBGFADDRESS_IS_HMA(pAddress))
|
|---|
| 195 | return VERR_INVALID_POINTER;
|
|---|
| 196 |
|
|---|
| 197 | /*
|
|---|
| 198 | * Select DBGF worker by addressing mode.
|
|---|
| 199 | */
|
|---|
| 200 | int rc;
|
|---|
| 201 | PGMMODE enmMode = PGMGetGuestMode(pVM);
|
|---|
| 202 | if ( enmMode == PGMMODE_REAL
|
|---|
| 203 | || enmMode == PGMMODE_PROTECTED
|
|---|
| 204 | || DBGFADDRESS_IS_PHYS(pAddress) )
|
|---|
| 205 | rc = PGMPhysReadGCPhys(pVM, pszBuf, pAddress->FlatPtr, cchBuf);
|
|---|
| 206 | else
|
|---|
| 207 | rc = PGMPhysReadGCPtr(pVM, pszBuf, pAddress->FlatPtr, cchBuf);
|
|---|
| 208 |
|
|---|
| 209 | /*
|
|---|
| 210 | * Make sure the result is terminated and that overflow is signaled.
|
|---|
| 211 | */
|
|---|
| 212 | if (!memchr(pszBuf, '\0', cchBuf))
|
|---|
| 213 | {
|
|---|
| 214 | pszBuf[cchBuf - 1] = '\0';
|
|---|
| 215 | rc = VINF_BUFFER_OVERFLOW;
|
|---|
| 216 | }
|
|---|
| 217 | /*
|
|---|
| 218 | * Handle partial reads (not perfect).
|
|---|
| 219 | */
|
|---|
| 220 | else if (RT_FAILURE(rc))
|
|---|
| 221 | {
|
|---|
| 222 | if (pszBuf[0])
|
|---|
| 223 | rc = VINF_SUCCESS;
|
|---|
| 224 | }
|
|---|
| 225 |
|
|---|
| 226 | return rc;
|
|---|
| 227 | }
|
|---|
| 228 |
|
|---|
| 229 |
|
|---|
| 230 | /**
|
|---|
| 231 | * Read a zero terminated string from guest memory.
|
|---|
| 232 | *
|
|---|
| 233 | * @returns VBox status code.
|
|---|
| 234 | * @param pVM Pointer to the shared VM structure.
|
|---|
| 235 | * @param pAddress Where to start reading.
|
|---|
| 236 | * @param pszBuf Where to store the string.
|
|---|
| 237 | * @param cchBuf The size of the buffer.
|
|---|
| 238 | */
|
|---|
| 239 | VMMR3DECL(int) DBGFR3MemReadString(PVM pVM, PCDBGFADDRESS pAddress, char *pszBuf, size_t cchBuf)
|
|---|
| 240 | {
|
|---|
| 241 | /*
|
|---|
| 242 | * Validate and zero output.
|
|---|
| 243 | */
|
|---|
| 244 | if (!VALID_PTR(pszBuf))
|
|---|
| 245 | return VERR_INVALID_POINTER;
|
|---|
| 246 | if (cchBuf <= 0)
|
|---|
| 247 | return VERR_INVALID_PARAMETER;
|
|---|
| 248 | memset(pszBuf, 0, cchBuf);
|
|---|
| 249 |
|
|---|
| 250 | /*
|
|---|
| 251 | * Pass it on to the EMT.
|
|---|
| 252 | */
|
|---|
| 253 | PVMREQ pReq;
|
|---|
| 254 | int rc = VMR3ReqCallU(pVM->pUVM, &pReq, RT_INDEFINITE_WAIT, 0, (PFNRT)dbgfR3MemReadString, 4,
|
|---|
| 255 | pVM, pAddress, pszBuf, cchBuf);
|
|---|
| 256 | if (VBOX_SUCCESS(rc))
|
|---|
| 257 | rc = pReq->iStatus;
|
|---|
| 258 | VMR3ReqFree(pReq);
|
|---|
| 259 |
|
|---|
| 260 | return rc;
|
|---|
| 261 | }
|
|---|
| 262 |
|
|---|
