| 1 | /* $Id: dbgmod.h 28800 2010-04-27 08:22:32Z 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) 2008-2009 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 | * 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 "internal/magics.h"
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| 33 |
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| 34 | RT_C_DECLS_BEGIN
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| 35 |
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| 36 | /** @addtogroup grp_rt_dbgmod
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| 37 | * @internal
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| 38 | * @{
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| 39 | */
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| 40 |
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| 41 |
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| 42 | /** Pointer to the internal module structure. */
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| 43 | typedef struct RTDBGMODINT *PRTDBGMODINT;
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| 44 |
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| 45 | /**
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| 46 | * Virtual method table for executable image interpreters.
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| 47 | */
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| 48 | typedef struct RTDBGMODVTIMG
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| 49 | {
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| 50 | /** Magic number (RTDBGMODVTIMG_MAGIC). */
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| 51 | uint32_t u32Magic;
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| 52 | /** Mask of supported executable image types, see grp_rt_exe_img_type.
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| 53 | * Used to speed up the search for a suitable interpreter. */
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| 54 | uint32_t fSupports;
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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 pDbgOps and pvDbgPriv.
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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 | } RTDBGMODVTIMG;
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| 91 | /** Pointer to a const RTDBGMODVTIMG. */
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| 92 | typedef RTDBGMODVTIMG const *PCRTDBGMODVTIMG;
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| 93 |
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| 94 |
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| 95 | /**
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| 96 | * Virtual method table for debug info interpreters.
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| 97 | */
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| 98 | typedef struct RTDBGMODVTDBG
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| 99 | {
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| 100 | /** Magic number (RTDBGMODVTDBG_MAGIC). */
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| 101 | uint32_t u32Magic;
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| 102 | /** Mask of supported debug info types, see grp_rt_dbg_type.
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| 103 | * Used to speed up the search for a suitable interpreter. */
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| 104 | uint32_t fSupports;
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| 105 | /** The name of the interpreter. */
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| 106 | const char *pszName;
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| 107 |
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| 108 | /**
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| 109 | * Try open the image.
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| 110 | *
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| 111 | * This combines probing and opening.
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| 112 | *
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| 113 | * @returns IPRT status code. No informational returns defined.
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| 114 | *
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| 115 | * @param pMod Pointer to the module that is being opened.
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| 116 | *
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| 117 | * The RTDBGMOD::pszDbgFile member will point to
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| 118 | * the filename of any debug info we're aware of
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| 119 | * on input. Also, or alternatively, it is expected
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| 120 | * that the interpreter will look for debug info in
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| 121 | * the executable image file when present and that it
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| 122 | * may ask the image interpreter for this when it's
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| 123 | * around.
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| 124 | *
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| 125 | * Upon successful return the method is expected to
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| 126 | * initialize pDbgOps and pvDbgPriv.
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| 127 | */
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| 128 | DECLCALLBACKMEMBER(int, pfnTryOpen)(PRTDBGMODINT pMod);
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| 129 |
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| 130 | /**
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| 131 | * Close the interpreter, freeing all associated resources.
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| 132 | *
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| 133 | * The caller sets the pDbgOps and pvDbgPriv RTDBGMOD members
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| 134 | * to NULL upon return.
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| 135 | *
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| 136 | * @param pMod Pointer to the module structure.
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| 137 | */
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| 138 | DECLCALLBACKMEMBER(int, pfnClose)(PRTDBGMODINT pMod);
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| 139 |
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| 140 |
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| 141 |
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| 142 | /**
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| 143 | * Converts an image relative virtual address address to a segmented address.
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| 144 | *
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| 145 | * @returns Segment index on success, NIL_RTDBGSEGIDX on failure.
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| 146 | * @param pMod Pointer to the module structure.
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| 147 | * @param uRva The image relative address to convert.
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| 148 | * @param poffSeg Where to return the segment offset. Optional.
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| 149 | */
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| 150 | DECLCALLBACKMEMBER(RTDBGSEGIDX, pfnRvaToSegOff)(PRTDBGMODINT pMod, RTUINTPTR uRva, PRTUINTPTR poffSeg);
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| 151 |
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| 152 | /**
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| 153 | * Image size when mapped if segments are mapped adjecently.
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| 154 | *
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| 155 | * For ELF, PE, and Mach-O images this is (usually) a natural query, for LX and
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| 156 | * NE and such it's a bit odder and the answer may not make much sense for them.
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| 157 | *
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| 158 | * @returns Image mapped size.
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| 159 | * @param pMod Pointer to the module structure.
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| 160 | */
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| 161 | DECLCALLBACKMEMBER(RTUINTPTR, pfnImageSize)(PRTDBGMODINT pMod);
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| 162 |
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| 163 |
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| 164 |
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| 165 | /**
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| 166 | * Adds a segment to the module (optional).
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| 167 | *
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| 168 | * @returns IPRT status code.
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| 169 | * @retval VERR_NOT_SUPPORTED if the interpreter doesn't support this feature.
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| 170 | * @retval VERR_DBG_SEGMENT_INDEX_CONFLICT if the segment index exists already.
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| 171 | *
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| 172 | * @param pMod Pointer to the module structure.
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| 173 | * @param uRva The segment image relative address.
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| 174 | * @param cb The segment size.
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| 175 | * @param pszName The segment name.
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| 176 | * @param cchName The length of the segment name.
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| 177 | * @param fFlags Segment flags.
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| 178 | * @param piSeg The segment index or NIL_RTDBGSEGIDX on input.
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| 179 | * The assigned segment index on successful return.
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| 180 | * Optional.
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| 181 | */
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| 182 | DECLCALLBACKMEMBER(int, pfnSegmentAdd)(PRTDBGMODINT pMod, RTUINTPTR uRva, RTUINTPTR cb, const char *pszName, size_t cchName,
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| 183 | uint32_t fFlags, PRTDBGSEGIDX piSeg);
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| 184 |
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| 185 | /**
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| 186 | * Gets the segment count.
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| 187 | *
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| 188 | * @returns Number of segments.
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| 189 | * @retval NIL_RTDBGSEGIDX if unknown.
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| 190 | *
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| 191 | * @param pMod Pointer to the module structure.
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| 192 | */
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| 193 | DECLCALLBACKMEMBER(RTDBGSEGIDX, pfnSegmentCount)(PRTDBGMODINT pMod);
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| 194 |
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| 195 | /**
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| 196 | * Gets information about a segment.
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| 197 | *
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| 198 | * @returns IPRT status code.
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| 199 | * @retval VERR_DBG_INVALID_SEGMENT_INDEX if iSeg is too high.
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| 200 | *
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| 201 | * @param pMod Pointer to the module structure.
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| 202 | * @param iSeg The segment.
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| 203 | * @param pSegInfo Where to store the segment information.
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| 204 | */
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| 205 | DECLCALLBACKMEMBER(int, pfnSegmentByIndex)(PRTDBGMODINT pMod, RTDBGSEGIDX iSeg, PRTDBGSEGMENT pSegInfo);
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| 206 |
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| 207 |
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| 208 |
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| 209 | /**
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| 210 | * Adds a symbol to the module (optional).
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| 211 | *
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| 212 | * @returns IPRT code.
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| 213 | * @retval VERR_NOT_SUPPORTED if the interpreter doesn't support this feature.
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| 214 | *
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| 215 | * @param pMod Pointer to the module structure.
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| 216 | * @param pszSymbol The symbol name.
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| 217 | * @param cchSymbol The length for the symbol name.
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| 218 | * @param iSeg The segment number (0-based). RTDBGMOD_SEG_RVA can be used.
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| 219 | * @param off The offset into the segment.
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| 220 | * @param cb The area covered by the symbol. 0 is fine.
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| 221 | * @param fFlags Flags.
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| 222 | * @param piOrdinal Where to return the symbol ordinal on success. If the
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| 223 | * interpreter doesn't do ordinals, this will be set to
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| 224 | * UINT32_MAX. Optional
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| 225 | */
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| 226 | DECLCALLBACKMEMBER(int, pfnSymbolAdd)(PRTDBGMODINT pMod, const char *pszSymbol, size_t cchSymbol,
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| 227 | uint32_t iSeg, RTUINTPTR off, RTUINTPTR cb, uint32_t fFlags,
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| 228 | uint32_t *piOrdinal);
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| 229 |
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| 230 | /**
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| 231 | * Gets the number of symbols in the module.
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| 232 | *
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| 233 | * This is used for figuring out the max value to pass to pfnSymbolByIndex among
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| 234 | * other things.
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| 235 | *
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| 236 | * @returns The number of symbols, UINT32_MAX if not known/supported.
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| 237 | *
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| 238 | * @param pMod Pointer to the module structure.
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| 239 | */
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| 240 | DECLCALLBACKMEMBER(uint32_t, pfnSymbolCount)(PRTDBGMODINT pMod);
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| 241 |
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| 242 | /**
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| 243 | * Queries symbol information by ordinal number.
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| 244 | *
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| 245 | * @returns IPRT status code.
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| 246 | * @retval VINF_SUCCESS on success, no informational status code.
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| 247 | * @retval VERR_DBG_NO_SYMBOLS if there aren't any symbols.
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| 248 | * @retval VERR_NOT_SUPPORTED if lookup by ordinal is not supported.
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| 249 | * @retval VERR_SYMBOL_NOT_FOUND if there is no symbol at that index.
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| 250 | *
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| 251 | * @param pMod Pointer to the module structure.
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| 252 | * @param iOrdinal The symbol ordinal number.
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| 253 | * @param pSymInfo Where to store the symbol information.
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| 254 | */
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| 255 | DECLCALLBACKMEMBER(int, pfnSymbolByOrdinal)(PRTDBGMODINT pMod, uint32_t iOrdinal, PRTDBGSYMBOL pSymInfo);
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| 256 |
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| 257 | /**
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| 258 | * Queries symbol information by symbol name.
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| 259 | *
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| 260 | * @returns IPRT status code.
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| 261 | * @retval VINF_SUCCESS on success, no informational status code.
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| 262 | * @retval VERR_DBG_NO_SYMBOLS if there aren't any symbols.
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| 263 | * @retval VERR_SYMBOL_NOT_FOUND if no suitable symbol was found.
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| 264 | *
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| 265 | * @param pMod Pointer to the module structure.
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| 266 | * @param pszSymbol The symbol name.
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| 267 | * @param cchSymbol The length of the symbol name.
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| 268 | * @param pSymInfo Where to store the symbol information.
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| 269 | */
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| 270 | DECLCALLBACKMEMBER(int, pfnSymbolByName)(PRTDBGMODINT pMod, const char *pszSymbol, size_t cchSymbol, PRTDBGSYMBOL pSymInfo);
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| 271 |
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| 272 | /**
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| 273 | * Queries symbol information by address.
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| 274 | *
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| 275 | * The returned symbol is what the debug info interpreter consideres the symbol
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| 276 | * most applicable to the specified address. This usually means a symbol with an
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| 277 | * address equal or lower than the requested.
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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 iSeg The segment number (0-based) or RTDBGSEGIDX_ABS.
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| 286 | * @param off The offset into the segment.
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| 287 | * @param poffDisp Where to store the distance between the specified address
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| 288 | * and the returned symbol. Optional.
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| 289 | * @param pSymInfo Where to store the symbol information.
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| 290 | */
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| 291 | DECLCALLBACKMEMBER(int, pfnSymbolByAddr)(PRTDBGMODINT pMod, uint32_t iSeg, RTUINTPTR off, PRTINTPTR poffDisp, PRTDBGSYMBOL pSymInfo);
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| 292 |
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| 293 |
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| 294 |
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| 295 | /**
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| 296 | * Adds a line number to the module (optional).
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| 297 | *
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| 298 | * @returns IPRT status code.
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| 299 | * @retval VERR_NOT_SUPPORTED if the interpreter doesn't support this feature.
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| 300 | *
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| 301 | * @param pMod Pointer to the module structure.
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| 302 | * @param pszFile The filename.
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| 303 | * @param cchFile The length of the filename.
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| 304 | * @param uLineNo The line number.
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| 305 | * @param iSeg The segment number (0-based).
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| 306 | * @param off The offset into the segment.
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| 307 | * @param piOrdinal Where to return the line number ordinal on success. If
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| 308 | * the interpreter doesn't do ordinals, this will be set to
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| 309 | * UINT32_MAX. Optional
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| 310 | */
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| 311 | DECLCALLBACKMEMBER(int, pfnLineAdd)(PRTDBGMODINT pMod, const char *pszFile, size_t cchFile, uint32_t uLineNo,
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| 312 | uint32_t iSeg, RTUINTPTR off, uint32_t *piOrdinal);
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| 313 |
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| 314 | /**
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| 315 | * Gets the number of line numbers in the module.
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| 316 | *
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| 317 | * @returns The number or UINT32_MAX if not known/supported.
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| 318 | *
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| 319 | * @param pMod Pointer to the module structure.
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| 320 | */
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| 321 | DECLCALLBACKMEMBER(uint32_t, pfnLineCount)(PRTDBGMODINT pMod);
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| 322 |
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| 323 | /**
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| 324 | * Queries line number information by ordinal number.
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| 325 | *
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| 326 | * @returns IPRT status code.
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| 327 | * @retval VINF_SUCCESS on success, no informational status code.
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| 328 | * @retval VERR_DBG_NO_LINE_NUMBERS if there aren't any line numbers.
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| 329 | * @retval VERR_DBG_LINE_NOT_FOUND if there is no line number with that
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| 330 | * ordinal.
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| 331 | *
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| 332 | * @param pMod Pointer to the module structure.
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| 333 | * @param iOrdinal The line number ordinal number.
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| 334 | * @param pLineInfo Where to store the information about the line number.
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| 335 | */
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| 336 | DECLCALLBACKMEMBER(int, pfnLineByOrdinal)(PRTDBGMODINT pMod, uint32_t iOrdinal, PRTDBGLINE pLineInfo);
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| 337 |
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| 338 | /**
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| 339 | * Queries line number information by address.
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| 340 | *
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| 341 | * @returns IPRT status code.
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| 342 | * @retval VINF_SUCCESS on success, no informational status code.
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| 343 | * @retval VERR_DBG_NO_LINE_NUMBERS if there aren't any line numbers.
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| 344 | * @retval VERR_DBG_LINE_NOT_FOUND if no suitable line number was found.
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| 345 | *
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| 346 | * @param pMod Pointer to the module structure.
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| 347 | * @param iSeg The segment number (0-based) or RTDBGSEGIDX_ABS.
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| 348 | * @param off The offset into the segment.
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| 349 | * @param poffDisp Where to store the distance between the specified address
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| 350 | * and the returned line number. Optional.
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| 351 | * @param pLineInfo Where to store the information about the closest line
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| 352 | * number.
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| 353 | */
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| 354 | DECLCALLBACKMEMBER(int, pfnLineByAddr)(PRTDBGMODINT pMod, uint32_t iSeg, RTUINTPTR off, PRTINTPTR poffDisp, PRTDBGLINE pLineInfo);
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| 355 |
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| 356 |
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| 357 | /** For catching initialization errors (RTDBGMODVTDBG_MAGIC). */
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| 358 | uint32_t u32EndMagic;
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| 359 | } RTDBGMODVTDBG;
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| 360 | /** Pointer to a const RTDBGMODVTDBG. */
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| 361 | typedef RTDBGMODVTDBG const *PCRTDBGMODVTDBG;
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| 362 |
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| 363 |
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| 364 | /**
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| 365 | * Debug module structure.
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| 366 | */
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| 367 | typedef struct RTDBGMODINT
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| 368 | {
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| 369 | /** Magic value (RTDBGMOD_MAGIC). */
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| 370 | uint32_t u32Magic;
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| 371 | /** The number of reference there are to this module.
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| 372 | * This is used to perform automatic cleanup and sharing. */
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| 373 | uint32_t volatile cRefs;
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| 374 | /** The module tag. */
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| 375 | uint64_t uTag;
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| 376 | /** The module name (short). */
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| 377 | char const *pszName;
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| 378 | /** The module filename. Can be NULL. */
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| 379 | char const *pszImgFile;
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| 380 | /** The debug info file (if external). Can be NULL. */
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| 381 | char const *pszDbgFile;
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| 382 |
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| 383 | /** Critical section serializing access to the module. */
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| 384 | RTCRITSECT CritSect;
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| 385 |
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| 386 | /** The method table for the executable image interpreter. */
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| 387 | PCRTDBGMODVTIMG pImgVt;
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| 388 | /** Pointer to the private data of the executable image interpreter. */
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| 389 | void *pvImgPriv;
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| 390 |
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| 391 | /** The method table for the debug info interpreter. */
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| 392 | PCRTDBGMODVTDBG pDbgVt;
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| 393 | /** Pointer to the private data of the debug info interpreter. */
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| 394 | void *pvDbgPriv;
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| 395 |
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| 396 | } RTDBGMODINT;
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| 397 | /** Pointer to an debug module structure. */
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| 398 | typedef RTDBGMODINT *PRTDBGMODINT;
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| 399 |
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| 400 |
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| 401 | extern DECLHIDDEN(RTSTRCACHE) g_hDbgModStrCache;
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| 402 | extern DECLHIDDEN(RTDBGMODVTDBG const) g_rtDbgModVtDbgNm;
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| 403 |
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| 404 | int rtDbgModContainerCreate(PRTDBGMODINT pMod, RTUINTPTR cbSeg);
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| 405 |
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| 406 | /** @} */
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| 407 |
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| 408 | RT_C_DECLS_END
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| 409 |
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| 410 | #endif
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| 411 |
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