| 1 | /* $Id: dbgmod.h 38515 2011-08-24 14:33:32Z vboxsync $ */
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| 2 | /** @file
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| 3 | * IPRT - Internal Header for RTDbgMod and the associated interpreters.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2008-2011 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.alldomusa.eu.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 |
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| 27 | #ifndef ___internal_dbgmod_h
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| 28 | #define ___internal_dbgmod_h
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| 29 |
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| 30 | #include <iprt/types.h>
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| 31 | #include <iprt/critsect.h>
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| 32 | #include <iprt/ldr.h> /* for PFNRTLDRENUMDBG */
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| 33 | #include "internal/magics.h"
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| 34 |
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| 35 | RT_C_DECLS_BEGIN
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| 36 |
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| 37 | /** @addtogroup grp_rt_dbgmod
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| 38 | * @internal
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| 39 | * @{
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| 40 | */
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| 41 |
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| 42 |
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| 43 | /** Pointer to the internal module structure. */
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| 44 | typedef struct RTDBGMODINT *PRTDBGMODINT;
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| 45 |
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| 46 | /**
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| 47 | * Virtual method table for executable image interpreters.
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| 48 | */
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| 49 | typedef struct RTDBGMODVTIMG
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| 50 | {
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| 51 | /** Magic number (RTDBGMODVTIMG_MAGIC). */
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| 52 | uint32_t u32Magic;
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| 53 | /** Reserved. */
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| 54 | uint32_t fReserved;
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| 55 | /** The name of the interpreter. */
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| 56 | const char *pszName;
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| 57 |
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| 58 | /**
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| 59 | * Try open the image.
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| 60 | *
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| 61 | * This combines probing and opening.
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| 62 | *
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| 63 | * @returns IPRT status code. No informational returns defined.
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| 64 | *
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| 65 | * @param pMod Pointer to the module that is being opened.
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| 66 | *
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| 67 | * The RTDBGMOD::pszDbgFile member will point to
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| 68 | * the filename of any debug info we're aware of
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| 69 | * on input. Also, or alternatively, it is expected
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| 70 | * that the interpreter will look for debug info in
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| 71 | * the executable image file when present and that it
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| 72 | * may ask the image interpreter for this when it's
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| 73 | * around.
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| 74 | *
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| 75 | * Upon successful return the method is expected to
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| 76 | * initialize pImgOps and pvImgPriv.
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| 77 | */
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| 78 | DECLCALLBACKMEMBER(int, pfnTryOpen)(PRTDBGMODINT pMod);
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| 79 |
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| 80 | /**
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| 81 | * Close the interpreter, freeing all associated resources.
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| 82 | *
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| 83 | * The caller sets the pDbgOps and pvDbgPriv RTDBGMOD members
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| 84 | * to NULL upon return.
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| 85 | *
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| 86 | * @param pMod Pointer to the module structure.
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| 87 | */
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| 88 | DECLCALLBACKMEMBER(int, pfnClose)(PRTDBGMODINT pMod);
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| 89 |
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| 90 | /**
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| 91 | * Enumerate the debug info contained in the executable image.
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| 92 | *
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| 93 | * Identical to RTLdrEnumDbgInfo.
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| 94 | *
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| 95 | * @returns IPRT status code or whatever pfnCallback returns.
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| 96 | *
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| 97 | * @param hLdrMod The module handle.
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| 98 | * @param pvBits Optional pointer to bits returned by
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| 99 | * RTLdrGetBits(). This can be used by some module
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| 100 | * interpreters to reduce memory consumption.
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| 101 | * @param pfnCallback The callback function. Ignore the module
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| 102 | * handle argument!
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| 103 | * @param pvUser The user argument.
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| 104 | */
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| 105 | DECLCALLBACKMEMBER(int, pfnEnumDbgInfo)(PRTDBGMODINT pMod, PFNRTLDRENUMDBG pfnCallback, void *pvUser);
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| 106 |
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| 107 | /** For catching initialization errors (RTDBGMODVTIMG_MAGIC). */
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| 108 | uint32_t u32EndMagic;
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| 109 | } RTDBGMODVTIMG;
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| 110 | /** Pointer to a const RTDBGMODVTIMG. */
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| 111 | typedef RTDBGMODVTIMG const *PCRTDBGMODVTIMG;
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| 112 |
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| 113 |
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| 114 | /**
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| 115 | * Virtual method table for debug info interpreters.
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| 116 | */
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| 117 | typedef struct RTDBGMODVTDBG
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| 118 | {
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| 119 | /** Magic number (RTDBGMODVTDBG_MAGIC). */
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| 120 | uint32_t u32Magic;
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| 121 | /** Mask of supported debug info types, see grp_rt_dbg_type.
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| 122 | * Used to speed up the search for a suitable interpreter. */
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| 123 | uint32_t fSupports;
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| 124 | /** The name of the interpreter. */
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| 125 | const char *pszName;
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| 126 |
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| 127 | /**
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| 128 | * Try open the image.
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| 129 | *
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| 130 | * This combines probing and opening.
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| 131 | *
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| 132 | * @returns IPRT status code. No informational returns defined.
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| 133 | *
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| 134 | * @param pMod Pointer to the module that is being opened.
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| 135 | *
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| 136 | * The RTDBGMOD::pszDbgFile member will point to
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| 137 | * the filename of any debug info we're aware of
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| 138 | * on input. Also, or alternatively, it is expected
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| 139 | * that the interpreter will look for debug info in
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| 140 | * the executable image file when present and that it
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| 141 | * may ask the image interpreter for this when it's
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| 142 | * around.
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| 143 | *
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| 144 | * Upon successful return the method is expected to
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| 145 | * initialize pDbgOps and pvDbgPriv.
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| 146 | */
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| 147 | DECLCALLBACKMEMBER(int, pfnTryOpen)(PRTDBGMODINT pMod);
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| 148 |
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| 149 | /**
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| 150 | * Close the interpreter, freeing all associated resources.
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| 151 | *
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| 152 | * The caller sets the pDbgOps and pvDbgPriv RTDBGMOD members
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| 153 | * to NULL upon return.
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| 154 | *
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| 155 | * @param pMod Pointer to the module structure.
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| 156 | */
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| 157 | DECLCALLBACKMEMBER(int, pfnClose)(PRTDBGMODINT pMod);
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| 158 |
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| 159 |
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| 160 |
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| 161 | /**
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| 162 | * Converts an image relative virtual address address to a segmented address.
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| 163 | *
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| 164 | * @returns Segment index on success, NIL_RTDBGSEGIDX on failure.
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| 165 | * @param pMod Pointer to the module structure.
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| 166 | * @param uRva The image relative address to convert.
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| 167 | * @param poffSeg Where to return the segment offset. Optional.
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| 168 | */
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| 169 | DECLCALLBACKMEMBER(RTDBGSEGIDX, pfnRvaToSegOff)(PRTDBGMODINT pMod, RTUINTPTR uRva, PRTUINTPTR poffSeg);
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| 170 |
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| 171 | /**
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| 172 | * Image size when mapped if segments are mapped adjacently.
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| 173 | *
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| 174 | * For ELF, PE, and Mach-O images this is (usually) a natural query, for LX and
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| 175 | * NE and such it's a bit odder and the answer may not make much sense for them.
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| 176 | *
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| 177 | * @returns Image mapped size.
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| 178 | * @param pMod Pointer to the module structure.
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| 179 | */
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| 180 | DECLCALLBACKMEMBER(RTUINTPTR, pfnImageSize)(PRTDBGMODINT pMod);
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| 181 |
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| 182 |
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| 183 |
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| 184 | /**
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| 185 | * Adds a segment to the module (optional).
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| 186 | *
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| 187 | * @returns IPRT status code.
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| 188 | * @retval VERR_NOT_SUPPORTED if the interpreter doesn't support this feature.
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| 189 | * @retval VERR_DBG_SEGMENT_INDEX_CONFLICT if the segment index exists already.
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| 190 | *
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| 191 | * @param pMod Pointer to the module structure.
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| 192 | * @param uRva The segment image relative address.
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| 193 | * @param cb The segment size.
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| 194 | * @param pszName The segment name.
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| 195 | * @param cchName The length of the segment name.
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| 196 | * @param fFlags Segment flags.
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| 197 | * @param piSeg The segment index or NIL_RTDBGSEGIDX on input.
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| 198 | * The assigned segment index on successful return.
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| 199 | * Optional.
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| 200 | */
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| 201 | DECLCALLBACKMEMBER(int, pfnSegmentAdd)(PRTDBGMODINT pMod, RTUINTPTR uRva, RTUINTPTR cb, const char *pszName, size_t cchName,
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| 202 | uint32_t fFlags, PRTDBGSEGIDX piSeg);
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| 203 |
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| 204 | /**
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| 205 | * Gets the segment count.
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| 206 | *
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| 207 | * @returns Number of segments.
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| 208 | * @retval NIL_RTDBGSEGIDX if unknown.
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| 209 | *
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| 210 | * @param pMod Pointer to the module structure.
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| 211 | */
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| 212 | DECLCALLBACKMEMBER(RTDBGSEGIDX, pfnSegmentCount)(PRTDBGMODINT pMod);
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| 213 |
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| 214 | /**
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| 215 | * Gets information about a segment.
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| 216 | *
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| 217 | * @returns IPRT status code.
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| 218 | * @retval VERR_DBG_INVALID_SEGMENT_INDEX if iSeg is too high.
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| 219 | *
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| 220 | * @param pMod Pointer to the module structure.
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| 221 | * @param iSeg The segment.
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| 222 | * @param pSegInfo Where to store the segment information.
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| 223 | */
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| 224 | DECLCALLBACKMEMBER(int, pfnSegmentByIndex)(PRTDBGMODINT pMod, RTDBGSEGIDX iSeg, PRTDBGSEGMENT pSegInfo);
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| 225 |
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| 226 |
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| 227 |
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| 228 | /**
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| 229 | * Adds a symbol to the module (optional).
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| 230 | *
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| 231 | * @returns IPRT code.
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| 232 | * @retval VERR_NOT_SUPPORTED if the interpreter doesn't support this feature.
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| 233 | *
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| 234 | * @param pMod Pointer to the module structure.
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| 235 | * @param pszSymbol The symbol name.
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| 236 | * @param cchSymbol The length for the symbol name.
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| 237 | * @param iSeg The segment number (0-based). RTDBGMOD_SEG_RVA can be used.
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| 238 | * @param off The offset into the segment.
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| 239 | * @param cb The area covered by the symbol. 0 is fine.
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| 240 | * @param fFlags Flags.
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| 241 | * @param piOrdinal Where to return the symbol ordinal on success. If the
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| 242 | * interpreter doesn't do ordinals, this will be set to
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| 243 | * UINT32_MAX. Optional
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| 244 | */
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| 245 | DECLCALLBACKMEMBER(int, pfnSymbolAdd)(PRTDBGMODINT pMod, const char *pszSymbol, size_t cchSymbol,
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| 246 | uint32_t iSeg, RTUINTPTR off, RTUINTPTR cb, uint32_t fFlags,
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| 247 | uint32_t *piOrdinal);
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| 248 |
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| 249 | /**
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| 250 | * Gets the number of symbols in the module.
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| 251 | *
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| 252 | * This is used for figuring out the max value to pass to pfnSymbolByIndex among
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| 253 | * other things.
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| 254 | *
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| 255 | * @returns The number of symbols, UINT32_MAX if not known/supported.
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| 256 | *
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| 257 | * @param pMod Pointer to the module structure.
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| 258 | */
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| 259 | DECLCALLBACKMEMBER(uint32_t, pfnSymbolCount)(PRTDBGMODINT pMod);
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| 260 |
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| 261 | /**
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| 262 | * Queries symbol information by ordinal number.
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| 263 | *
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| 264 | * @returns IPRT status code.
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| 265 | * @retval VINF_SUCCESS on success, no informational status code.
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| 266 | * @retval VERR_DBG_NO_SYMBOLS if there aren't any symbols.
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| 267 | * @retval VERR_NOT_SUPPORTED if lookup by ordinal is not supported.
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| 268 | * @retval VERR_SYMBOL_NOT_FOUND if there is no symbol at that index.
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| 269 | *
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| 270 | * @param pMod Pointer to the module structure.
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| 271 | * @param iOrdinal The symbol ordinal number.
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| 272 | * @param pSymInfo Where to store the symbol information.
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| 273 | */
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| 274 | DECLCALLBACKMEMBER(int, pfnSymbolByOrdinal)(PRTDBGMODINT pMod, uint32_t iOrdinal, PRTDBGSYMBOL pSymInfo);
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| 275 |
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| 276 | /**
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| 277 | * Queries symbol information by symbol name.
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| 278 | *
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| 279 | * @returns IPRT status code.
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| 280 | * @retval VINF_SUCCESS on success, no informational status code.
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| 281 | * @retval VERR_DBG_NO_SYMBOLS if there aren't any symbols.
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| 282 | * @retval VERR_SYMBOL_NOT_FOUND if no suitable symbol was found.
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| 283 | *
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| 284 | * @param pMod Pointer to the module structure.
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| 285 | * @param pszSymbol The symbol name.
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| 286 | * @param cchSymbol The length of the symbol name.
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| 287 | * @param pSymInfo Where to store the symbol information.
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| 288 | */
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| 289 | DECLCALLBACKMEMBER(int, pfnSymbolByName)(PRTDBGMODINT pMod, const char *pszSymbol, size_t cchSymbol, PRTDBGSYMBOL pSymInfo);
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| 290 |
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| 291 | /**
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| 292 | * Queries symbol information by address.
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| 293 | *
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| 294 | * The returned symbol is what the debug info interpreter considers the symbol
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| 295 | * most applicable to the specified address. This usually means a symbol with an
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| 296 | * address equal or lower than the requested.
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| 297 | *
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| 298 | * @returns IPRT status code.
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| 299 | * @retval VINF_SUCCESS on success, no informational status code.
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| 300 | * @retval VERR_DBG_NO_SYMBOLS if there aren't any symbols.
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| 301 | * @retval VERR_SYMBOL_NOT_FOUND if no suitable symbol was found.
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| 302 | *
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| 303 | * @param pMod Pointer to the module structure.
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| 304 | * @param iSeg The segment number (0-based) or RTDBGSEGIDX_ABS.
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| 305 | * @param off The offset into the segment.
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| 306 | * @param poffDisp Where to store the distance between the specified address
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| 307 | * and the returned symbol. Optional.
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| 308 | * @param pSymInfo Where to store the symbol information.
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| 309 | */
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| 310 | DECLCALLBACKMEMBER(int, pfnSymbolByAddr)(PRTDBGMODINT pMod, uint32_t iSeg, RTUINTPTR off, PRTINTPTR poffDisp, PRTDBGSYMBOL pSymInfo);
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| 311 |
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| 312 |
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| 313 |
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| 314 | /**
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| 315 | * Adds a line number to the module (optional).
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| 316 | *
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| 317 | * @returns IPRT status code.
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| 318 | * @retval VERR_NOT_SUPPORTED if the interpreter doesn't support this feature.
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| 319 | *
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| 320 | * @param pMod Pointer to the module structure.
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| 321 | * @param pszFile The filename.
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| 322 | * @param cchFile The length of the filename.
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| 323 | * @param uLineNo The line number.
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| 324 | * @param iSeg The segment number (0-based).
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| 325 | * @param off The offset into the segment.
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| 326 | * @param piOrdinal Where to return the line number ordinal on success. If
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| 327 | * the interpreter doesn't do ordinals, this will be set to
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| 328 | * UINT32_MAX. Optional
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| 329 | */
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| 330 | DECLCALLBACKMEMBER(int, pfnLineAdd)(PRTDBGMODINT pMod, const char *pszFile, size_t cchFile, uint32_t uLineNo,
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| 331 | uint32_t iSeg, RTUINTPTR off, uint32_t *piOrdinal);
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| 332 |
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| 333 | /**
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| 334 | * Gets the number of line numbers in the module.
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| 335 | *
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| 336 | * @returns The number or UINT32_MAX if not known/supported.
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| 337 | *
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| 338 | * @param pMod Pointer to the module structure.
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| 339 | */
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| 340 | DECLCALLBACKMEMBER(uint32_t, pfnLineCount)(PRTDBGMODINT pMod);
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| 341 |
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| 342 | /**
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| 343 | * Queries line number information by ordinal number.
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| 344 | *
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| 345 | * @returns IPRT status code.
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| 346 | * @retval VINF_SUCCESS on success, no informational status code.
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| 347 | * @retval VERR_DBG_NO_LINE_NUMBERS if there aren't any line numbers.
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| 348 | * @retval VERR_DBG_LINE_NOT_FOUND if there is no line number with that
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| 349 | * ordinal.
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| 350 | *
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| 351 | * @param pMod Pointer to the module structure.
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| 352 | * @param iOrdinal The line number ordinal number.
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| 353 | * @param pLineInfo Where to store the information about the line number.
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| 354 | */
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| 355 | DECLCALLBACKMEMBER(int, pfnLineByOrdinal)(PRTDBGMODINT pMod, uint32_t iOrdinal, PRTDBGLINE pLineInfo);
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| 356 |
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| 357 | /**
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| 358 | * Queries line number information by address.
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| 359 | *
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| 360 | * @returns IPRT status code.
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| 361 | * @retval VINF_SUCCESS on success, no informational status code.
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| 362 | * @retval VERR_DBG_NO_LINE_NUMBERS if there aren't any line numbers.
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| 363 | * @retval VERR_DBG_LINE_NOT_FOUND if no suitable line number was found.
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| 364 | *
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| 365 | * @param pMod Pointer to the module structure.
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| 366 | * @param iSeg The segment number (0-based) or RTDBGSEGIDX_ABS.
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| 367 | * @param off The offset into the segment.
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| 368 | * @param poffDisp Where to store the distance between the specified address
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| 369 | * and the returned line number. Optional.
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| 370 | * @param pLineInfo Where to store the information about the closest line
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| 371 | * number.
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| 372 | */
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| 373 | DECLCALLBACKMEMBER(int, pfnLineByAddr)(PRTDBGMODINT pMod, uint32_t iSeg, RTUINTPTR off, PRTINTPTR poffDisp, PRTDBGLINE pLineInfo);
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| 374 |
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| 375 |
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| 376 | /** For catching initialization errors (RTDBGMODVTDBG_MAGIC). */
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| 377 | uint32_t u32EndMagic;
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| 378 | } RTDBGMODVTDBG;
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| 379 | /** Pointer to a const RTDBGMODVTDBG. */
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| 380 | typedef RTDBGMODVTDBG const *PCRTDBGMODVTDBG;
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| 381 |
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| 382 |
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| 383 | /**
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| 384 | * Debug module structure.
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| 385 | */
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| 386 | typedef struct RTDBGMODINT
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| 387 | {
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| 388 | /** Magic value (RTDBGMOD_MAGIC). */
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| 389 | uint32_t u32Magic;
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| 390 | /** The number of reference there are to this module.
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| 391 | * This is used to perform automatic cleanup and sharing. */
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| 392 | uint32_t volatile cRefs;
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| 393 | /** The module tag. */
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| 394 | uint64_t uTag;
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| 395 | /** The module name (short). */
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| 396 | char const *pszName;
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| 397 | /** The module filename. Can be NULL. */
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| 398 | char const *pszImgFile;
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| 399 | /** The debug info file (if external). Can be NULL. */
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| 400 | char const *pszDbgFile;
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| 401 |
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| 402 | /** Critical section serializing access to the module. */
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| 403 | RTCRITSECT CritSect;
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| 404 |
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| 405 | /** The method table for the executable image interpreter. */
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| 406 | PCRTDBGMODVTIMG pImgVt;
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| 407 | /** Pointer to the private data of the executable image interpreter. */
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| 408 | void *pvImgPriv;
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| 409 |
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| 410 | /** The method table for the debug info interpreter. */
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| 411 | PCRTDBGMODVTDBG pDbgVt;
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| 412 | /** Pointer to the private data of the debug info interpreter. */
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| 413 | void *pvDbgPriv;
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| 414 |
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| 415 | } RTDBGMODINT;
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| 416 | /** Pointer to an debug module structure. */
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| 417 | typedef RTDBGMODINT *PRTDBGMODINT;
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| 418 |
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| 419 |
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| 420 | extern DECLHIDDEN(RTSTRCACHE) g_hDbgModStrCache;
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| 421 | extern DECLHIDDEN(RTDBGMODVTDBG const) g_rtDbgModVtDbgDwarf;
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| 422 | extern DECLHIDDEN(RTDBGMODVTDBG const) g_rtDbgModVtDbgNm;
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| 423 | extern DECLHIDDEN(RTDBGMODVTIMG const) g_rtDbgModVtImgLdr;
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| 424 |
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| 425 | int rtDbgModContainerCreate(PRTDBGMODINT pMod, RTUINTPTR cbSeg);
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| 426 |
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| 427 | /** @} */
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| 428 |
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| 429 | RT_C_DECLS_END
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| 430 |
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| 431 | #endif
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| 432 |
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