| 1 | /* $Id: tstLdr-3.cpp 8245 2008-04-21 17:24:28Z vboxsync $ */
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| 2 | /** @file
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| 3 | * IPRT - Testcase for parts of RTLdr*, manual inspection.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2006-2007 Sun Microsystems, Inc.
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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 | * The contents of this file may alternatively be used under the terms
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| 18 | * of the Common Development and Distribution License Version 1.0
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| 19 | * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
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| 20 | * VirtualBox OSE distribution, in which case the provisions of the
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| 21 | * CDDL are applicable instead of those of the GPL.
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| 22 | *
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| 23 | * You may elect to license modified versions of this file under the
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| 24 | * terms and conditions of either the GPL or the CDDL or both.
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| 25 | *
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| 26 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
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| 27 | * Clara, CA 95054 USA or visit http://www.sun.com if you need
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| 28 | * additional information or have any questions.
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| 29 | */
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| 30 |
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| 31 |
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| 32 | /*******************************************************************************
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| 33 | * Header Files *
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| 34 | *******************************************************************************/
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| 35 | #include <iprt/ldr.h>
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| 36 | #include <iprt/alloc.h>
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| 37 | #include <iprt/stream.h>
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| 38 | #include <iprt/assert.h>
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| 39 | #include <iprt/runtime.h>
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| 40 | #include <iprt/err.h>
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| 41 | #include <iprt/string.h>
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| 42 | #include <VBox/dis.h>
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| 43 |
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| 44 |
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| 45 | static bool MyDisBlock(PDISCPUSTATE pCpu, RTHCUINTPTR pvCodeBlock, int32_t cbMax, RTUINTPTR off, RTUINTPTR Addr)
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| 46 | {
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| 47 | int32_t i = 0;
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| 48 | while (i < cbMax)
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| 49 | {
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| 50 | char szOutput[256];
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| 51 | uint32_t cbInstr;
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| 52 | if (RT_FAILURE(DISInstr(pCpu, pvCodeBlock + i, off, &cbInstr, szOutput)))
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| 53 | return false;
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| 54 |
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| 55 | RTPrintf("%s", szOutput);
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| 56 | if (pvCodeBlock + i + off == Addr)
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| 57 | RTPrintf("^^^^^^^^\n");
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| 58 |
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| 59 | /* next */
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| 60 | i += cbInstr;
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| 61 | }
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| 62 | return true;
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| 63 | }
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| 64 |
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| 65 |
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| 66 |
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| 67 | /**
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| 68 | * Resolve an external symbol during RTLdrGetBits().
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| 69 | *
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| 70 | * @returns iprt status code.
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| 71 | * @param hLdrMod The loader module handle.
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| 72 | * @param pszModule Module name.
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| 73 | * @param pszSymbol Symbol name, NULL if uSymbol should be used.
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| 74 | * @param uSymbol Symbol ordinal, ~0 if pszSymbol should be used.
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| 75 | * @param pValue Where to store the symbol value (address).
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| 76 | * @param pvUser User argument.
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| 77 | */
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| 78 | static DECLCALLBACK(int) testGetImport(RTLDRMOD hLdrMod, const char *pszModule, const char *pszSymbol, unsigned uSymbol, RTUINTPTR *pValue, void *pvUser)
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| 79 | {
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| 80 | /* check the name format and only permit certain names */
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| 81 | *pValue = 0xf0f0f0f0;
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| 82 | return VINF_SUCCESS;
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| 83 | }
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| 84 |
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| 85 |
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| 86 | /**
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| 87 | * Enumeration callback function used by RTLdrEnumSymbols().
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| 88 | *
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| 89 | * @returns iprt status code. Failure will stop the enumeration.
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| 90 | * @param hLdrMod The loader module handle.
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| 91 | * @param pszSymbol Symbol name. NULL if ordinal only.
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| 92 | * @param uSymbol Symbol ordinal, ~0 if not used.
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| 93 | * @param Value Symbol value.
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| 94 | * @param pvUser The user argument specified to RTLdrEnumSymbols().
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| 95 | */
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| 96 | static DECLCALLBACK(int) testEnumSymbol1(RTLDRMOD hLdrMod, const char *pszSymbol, unsigned uSymbol, RTUINTPTR Value, void *pvUser)
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| 97 | {
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| 98 | RTPrintf(" %RTptr %s (%d)\n", Value, pszSymbol, uSymbol);
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| 99 | return VINF_SUCCESS;
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| 100 | }
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| 101 |
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| 102 | /**
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| 103 | * Current nearest symbol.
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| 104 | */
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| 105 | typedef struct TESTNEARSYM
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| 106 | {
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| 107 | RTUINTPTR Addr;
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| 108 | struct TESTSYM
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| 109 | {
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| 110 | RTUINTPTR Value;
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| 111 | unsigned uSymbol;
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| 112 | char szName[512];
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| 113 | } aSyms[2];
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| 114 | } TESTNEARSYM, *PTESTNEARSYM;
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| 115 |
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| 116 | /**
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| 117 | * Enumeration callback function used by RTLdrEnumSymbols().
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| 118 | *
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| 119 | * @returns iprt status code. Failure will stop the enumeration.
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| 120 | * @param hLdrMod The loader module handle.
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| 121 | * @param pszSymbol Symbol name. NULL if ordinal only.
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| 122 | * @param uSymbol Symbol ordinal, ~0 if not used.
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| 123 | * @param Value Symbol value.
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| 124 | * @param pvUser The user argument specified to RTLdrEnumSymbols().
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| 125 | */
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| 126 | static DECLCALLBACK(int) testEnumSymbol2(RTLDRMOD hLdrMod, const char *pszSymbol, unsigned uSymbol, RTUINTPTR Value, void *pvUser)
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| 127 | {
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| 128 | PTESTNEARSYM pSym = (PTESTNEARSYM)pvUser;
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| 129 |
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| 130 | /* less or equal */
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| 131 | if ( Value <= pSym->Addr
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| 132 | && ( Value > pSym->aSyms[0].Value
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| 133 | || ( Value == pSym->aSyms[0].Value
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| 134 | && !pSym->aSyms[0].szName[0]
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| 135 | && pszSymbol
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| 136 | && *pszSymbol
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| 137 | )
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| 138 | )
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| 139 | )
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| 140 | {
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| 141 | pSym->aSyms[0].Value = Value;
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| 142 | pSym->aSyms[0].uSymbol = uSymbol;
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| 143 | pSym->aSyms[0].szName[0] = '\0';
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| 144 | if (pszSymbol)
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| 145 | strncat(pSym->aSyms[0].szName, pszSymbol, sizeof(pSym->aSyms[0].szName));
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| 146 | }
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| 147 |
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| 148 | /* above */
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| 149 | if ( Value > pSym->Addr
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| 150 | && ( Value < pSym->aSyms[1].Value
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| 151 | || ( Value == pSym->aSyms[1].Value
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| 152 | && !pSym->aSyms[1].szName[1]
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| 153 | && pszSymbol
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| 154 | && *pszSymbol
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| 155 | )
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| 156 | )
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| 157 | )
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| 158 | {
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| 159 | pSym->aSyms[1].Value = Value;
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| 160 | pSym->aSyms[1].uSymbol = uSymbol;
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| 161 | pSym->aSyms[1].szName[0] = '\0';
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| 162 | if (pszSymbol)
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| 163 | strncat(pSym->aSyms[1].szName, pszSymbol, sizeof(pSym->aSyms[1].szName));
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| 164 | }
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| 165 |
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| 166 | return VINF_SUCCESS;
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| 167 | }
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| 168 |
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| 169 |
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| 170 | int main(int argc, char **argv)
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| 171 | {
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| 172 | RTR3Init();
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| 173 |
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| 174 | int rcRet = 0;
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| 175 | if (argc <= 2)
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| 176 | {
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| 177 | RTPrintf("usage: %s <load-addr> <module> [addr1 []]\n", argv[0]);
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| 178 | return 1;
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| 179 | }
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| 180 |
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| 181 | /*
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| 182 | * Load the module.
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| 183 | */
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| 184 | RTUINTPTR LoadAddr = (RTUINTPTR)RTStrToUInt64(argv[1]);
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| 185 | RTLDRMOD hLdrMod;
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| 186 | int rc = RTLdrOpen(argv[2], &hLdrMod);
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| 187 | if (RT_FAILURE(rc))
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| 188 | {
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| 189 | RTPrintf("tstLdr-3: Failed to open '%s': %Rra\n", argv[2], rc);
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| 190 | return 1;
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| 191 | }
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| 192 |
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| 193 | void *pvBits = RTMemAlloc(RTLdrSize(hLdrMod));
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| 194 | rc = RTLdrGetBits(hLdrMod, pvBits, LoadAddr, testGetImport, NULL);
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| 195 | if (RT_SUCCESS(rc))
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| 196 | {
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| 197 | if (argc > 3)
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| 198 | {
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| 199 | for (int i = 3; i < argc; i++)
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| 200 | {
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| 201 | TESTNEARSYM NearSym = {0};
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| 202 | NearSym.Addr = (RTUINTPTR)RTStrToUInt64(argv[i]);
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| 203 | NearSym.aSyms[1].Value = ~(RTUINTPTR)0;
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| 204 | rc = RTLdrEnumSymbols(hLdrMod, RTLDR_ENUM_SYMBOL_FLAGS_ALL, pvBits, LoadAddr, testEnumSymbol2, &NearSym);
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| 205 | if (RT_SUCCESS(rc))
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| 206 | {
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| 207 | RTPrintf("tstLdr-3: Addr=%RTptr\n"
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| 208 | "%RTptr %s (%d) - %RTptr %s (%d)\n",
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| 209 | NearSym.Addr,
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| 210 | NearSym.aSyms[0].Value, NearSym.aSyms[0].szName, NearSym.aSyms[0].uSymbol,
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| 211 | NearSym.aSyms[1].Value, NearSym.aSyms[1].szName, NearSym.aSyms[1].uSymbol);
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| 212 | if (NearSym.Addr - NearSym.aSyms[0].Value < 0x10000)
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| 213 | {
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| 214 | DISCPUSTATE Cpu;
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| 215 | memset(&Cpu, 0, sizeof(Cpu));
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| 216 | Cpu.mode = CPUMODE_32BIT;
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| 217 | uint8_t *pbCode = (uint8_t *)pvBits + (NearSym.aSyms[0].Value - LoadAddr);
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| 218 | MyDisBlock(&Cpu, (uintptr_t)pbCode,
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| 219 | RT_MAX(NearSym.aSyms[1].Value - NearSym.aSyms[0].Value, 0x20000),
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| 220 | NearSym.aSyms[0].Value - (RTUINTPTR)pbCode,
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| 221 | NearSym.Addr);
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| 222 | }
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| 223 | }
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| 224 | else
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| 225 | {
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| 226 | RTPrintf("tstLdr-3: Failed to enumerate symbols: %Rra\n", rc);
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| 227 | rcRet++;
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| 228 | }
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| 229 | }
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| 230 | }
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| 231 | else
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| 232 | {
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| 233 | /*
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| 234 | * Enumerate symbols.
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| 235 | */
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| 236 | rc = RTLdrEnumSymbols(hLdrMod, RTLDR_ENUM_SYMBOL_FLAGS_ALL, pvBits, LoadAddr, testEnumSymbol1, NULL);
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| 237 | if (RT_FAILURE(rc))
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| 238 | {
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| 239 | RTPrintf("tstLdr-3: Failed to enumerate symbols: %Rra\n", rc);
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| 240 | rcRet++;
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| 241 | }
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| 242 | }
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| 243 | }
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| 244 | else
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| 245 | {
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| 246 | RTPrintf("tstLdr-3: Failed to get bits for '%s' at %RTptr: %Rra\n", argv[2], LoadAddr, rc);
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| 247 | rcRet++;
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| 248 | }
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| 249 | RTMemFree(pvBits);
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| 250 | RTLdrClose(hLdrMod);
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| 251 |
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| 252 | /*
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| 253 | * Test result summary.
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| 254 | */
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| 255 | if (!rcRet)
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| 256 | RTPrintf("tstLdr-3: SUCCESS\n");
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| 257 | else
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| 258 | RTPrintf("tstLdr-3: FAILURE - %d errors\n", rcRet);
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| 259 | return !!rcRet;
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| 260 | }
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