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diff --git a/include/iprt/dbg.h b/include/iprt/dbg.h
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+/* $Id: dbg.h $ */
+/** @file
+ * IPRT - Debugging Routines.
+ */
+
+/*
+ * Copyright (C) 2008-2022 Oracle and/or its affiliates.
+ *
+ * This file is part of VirtualBox base platform packages, as
+ * available from https://www.virtualbox.org.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, in version 3 of the
+ * License.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <https://www.gnu.org/licenses>.
+ *
+ * The contents of this file may alternatively be used under the terms
+ * of the Common Development and Distribution License Version 1.0
+ * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
+ * in the VirtualBox distribution, in which case the provisions of the
+ * CDDL are applicable instead of those of the GPL.
+ *
+ * You may elect to license modified versions of this file under the
+ * terms and conditions of either the GPL or the CDDL or both.
+ *
+ * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
+ */
+
+#ifndef IPRT_INCLUDED_dbg_h
+#define IPRT_INCLUDED_dbg_h
+#ifndef RT_WITHOUT_PRAGMA_ONCE
+# pragma once
+#endif
+
+#include <iprt/types.h>
+#include <iprt/stdarg.h>
+#include <iprt/ldr.h>
+
+RT_C_DECLS_BEGIN
+
+
+/** @defgroup grp_rt_dbg RTDbg - Debugging Routines
+ * @ingroup grp_rt
+ * @{
+ */
+
+
+/** Debug segment index. */
+typedef uint32_t RTDBGSEGIDX;
+/** Pointer to a debug segment index. */
+typedef RTDBGSEGIDX *PRTDBGSEGIDX;
+/** Pointer to a const debug segment index. */
+typedef RTDBGSEGIDX const *PCRTDBGSEGIDX;
+/** NIL debug segment index. */
+#define NIL_RTDBGSEGIDX UINT32_C(0xffffffff)
+/** The last normal segment index. */
+#define RTDBGSEGIDX_LAST UINT32_C(0xffffffef)
+/** Special segment index that indicates that the offset is a relative
+ * virtual address (RVA). I.e. an offset from the start of the module. */
+#define RTDBGSEGIDX_RVA UINT32_C(0xfffffff0)
+/** Special segment index that indicates that the offset is a absolute. */
+#define RTDBGSEGIDX_ABS UINT32_C(0xfffffff1)
+/** The last valid special segment index. */
+#define RTDBGSEGIDX_SPECIAL_LAST RTDBGSEGIDX_ABS
+/** The last valid special segment index. */
+#define RTDBGSEGIDX_SPECIAL_FIRST (RTDBGSEGIDX_LAST + 1U)
+
+
+
+/** @name RTDBGSYMADDR_FLAGS_XXX
+ * Flags used when looking up a symbol by address.
+ * @{ */
+/** Less or equal address. (default) */
+#define RTDBGSYMADDR_FLAGS_LESS_OR_EQUAL UINT32_C(0)
+/** Greater or equal address. */
+#define RTDBGSYMADDR_FLAGS_GREATER_OR_EQUAL UINT32_C(1)
+/** Don't consider absolute symbols in deferred modules. */
+#define RTDBGSYMADDR_FLAGS_SKIP_ABS_IN_DEFERRED UINT32_C(2)
+/** Don't search for absolute symbols if it's expensive. */
+#define RTDBGSYMADDR_FLAGS_SKIP_ABS UINT32_C(4)
+/** Mask of valid flags. */
+#define RTDBGSYMADDR_FLAGS_VALID_MASK UINT32_C(7)
+/** @} */
+
+/** @name RTDBGSYMBOLADD_F_XXX - Flags for RTDbgModSymbolAdd and RTDbgAsSymbolAdd.
+ * @{ */
+/** Replace existing symbol with same address. */
+#define RTDBGSYMBOLADD_F_REPLACE_SAME_ADDR UINT32_C(0x00000001)
+/** Replace any existing symbols overlapping the symbol range. */
+#define RTDBGSYMBOLADD_F_REPLACE_ANY UINT32_C(0x00000002)
+/** Adjust sizes on address conflict. This applies to the symbol being added
+ * as well as existing symbols. */
+#define RTDBGSYMBOLADD_F_ADJUST_SIZES_ON_CONFLICT UINT32_C(0x00000004)
+/** Mask of valid flags. */
+#define RTDBGSYMBOLADD_F_VALID_MASK UINT32_C(0x00000007)
+/** @} */
+
+/** Max length (including '\\0') of a segment name. */
+#define RTDBG_SEGMENT_NAME_LENGTH (128 - 8 - 8 - 8 - 4 - 4)
+
+/**
+ * Debug module segment.
+ */
+typedef struct RTDBGSEGMENT
+{
+ /** The load address.
+ * RTUINTPTR_MAX if not applicable. */
+ RTUINTPTR Address;
+ /** The image relative virtual address of the segment.
+ * RTUINTPTR_MAX if not applicable. */
+ RTUINTPTR uRva;
+ /** The segment size. */
+ RTUINTPTR cb;
+ /** The segment flags. (reserved) */
+ uint32_t fFlags;
+ /** The segment index. */
+ RTDBGSEGIDX iSeg;
+ /** Symbol name. */
+ char szName[RTDBG_SEGMENT_NAME_LENGTH];
+} RTDBGSEGMENT;
+/** Pointer to a debug module segment. */
+typedef RTDBGSEGMENT *PRTDBGSEGMENT;
+/** Pointer to a const debug module segment. */
+typedef RTDBGSEGMENT const *PCRTDBGSEGMENT;
+
+
+/**
+ * Return type.
+ */
+typedef enum RTDBGRETURNTYPE
+{
+ /** The usual invalid 0 value. */
+ RTDBGRETURNTYPE_INVALID = 0,
+ /** Near 16-bit return. */
+ RTDBGRETURNTYPE_NEAR16,
+ /** Near 32-bit return. */
+ RTDBGRETURNTYPE_NEAR32,
+ /** Near 64-bit return. */
+ RTDBGRETURNTYPE_NEAR64,
+ /** Far 16:16 return. */
+ RTDBGRETURNTYPE_FAR16,
+ /** Far 16:32 return. */
+ RTDBGRETURNTYPE_FAR32,
+ /** Far 16:64 return. */
+ RTDBGRETURNTYPE_FAR64,
+ /** 16-bit iret return (e.g. real or 286 protect mode). */
+ RTDBGRETURNTYPE_IRET16,
+ /** 32-bit iret return. */
+ RTDBGRETURNTYPE_IRET32,
+ /** 32-bit iret return. */
+ RTDBGRETURNTYPE_IRET32_PRIV,
+ /** 32-bit iret return to V86 mode. */
+ RTDBGRETURNTYPE_IRET32_V86,
+ /** @todo 64-bit iret return. */
+ RTDBGRETURNTYPE_IRET64,
+ /** The end of the valid return types. */
+ RTDBGRETURNTYPE_END,
+ /** The usual 32-bit blowup. */
+ RTDBGRETURNTYPE_32BIT_HACK = 0x7fffffff
+} RTDBGRETURNTYPE;
+
+/**
+ * Figures the size of the return state on the stack.
+ *
+ * @returns number of bytes. 0 if invalid parameter.
+ * @param enmRetType The type of return.
+ */
+DECLINLINE(unsigned) RTDbgReturnTypeSize(RTDBGRETURNTYPE enmRetType)
+{
+ switch (enmRetType)
+ {
+ case RTDBGRETURNTYPE_NEAR16: return 2;
+ case RTDBGRETURNTYPE_NEAR32: return 4;
+ case RTDBGRETURNTYPE_NEAR64: return 8;
+ case RTDBGRETURNTYPE_FAR16: return 4;
+ case RTDBGRETURNTYPE_FAR32: return 4;
+ case RTDBGRETURNTYPE_FAR64: return 8;
+ case RTDBGRETURNTYPE_IRET16: return 6;
+ case RTDBGRETURNTYPE_IRET32: return 4*3;
+ case RTDBGRETURNTYPE_IRET32_PRIV: return 4*5;
+ case RTDBGRETURNTYPE_IRET32_V86: return 4*9;
+ case RTDBGRETURNTYPE_IRET64: return 5*8;
+
+ case RTDBGRETURNTYPE_INVALID:
+ case RTDBGRETURNTYPE_END:
+ case RTDBGRETURNTYPE_32BIT_HACK:
+ break;
+ }
+ return 0;
+}
+
+/**
+ * Check if near return.
+ *
+ * @returns true if near, false if far or iret.
+ * @param enmRetType The type of return.
+ */
+DECLINLINE(bool) RTDbgReturnTypeIsNear(RTDBGRETURNTYPE enmRetType)
+{
+ return enmRetType == RTDBGRETURNTYPE_NEAR32
+ || enmRetType == RTDBGRETURNTYPE_NEAR64
+ || enmRetType == RTDBGRETURNTYPE_NEAR16;
+}
+
+
+
+/** Magic value for RTDBGUNWINDSTATE::u32Magic (James Moody). */
+#define RTDBGUNWINDSTATE_MAGIC UINT32_C(0x19250326)
+/** Magic value for RTDBGUNWINDSTATE::u32Magic after use. */
+#define RTDBGUNWINDSTATE_MAGIC_DEAD UINT32_C(0x20101209)
+
+/**
+ * Unwind machine state.
+ */
+typedef struct RTDBGUNWINDSTATE
+{
+ /** Structure magic (RTDBGUNWINDSTATE_MAGIC) */
+ uint32_t u32Magic;
+ /** The state architecture. */
+ RTLDRARCH enmArch;
+
+ /** The program counter register.
+ * amd64/x86: RIP/EIP/IP
+ * sparc: PC
+ * arm32: PC / R15
+ */
+ uint64_t uPc;
+
+ /** Return type. */
+ RTDBGRETURNTYPE enmRetType;
+
+ /** Register state (see enmArch). */
+ union
+ {
+ /** RTLDRARCH_AMD64, RTLDRARCH_X86_32 and RTLDRARCH_X86_16. */
+ struct
+ {
+ /** General purpose registers indexed by X86_GREG_XXX. */
+ uint64_t auRegs[16];
+ /** The frame address. */
+ RTFAR64 FrameAddr;
+ /** Set if we're in real or virtual 8086 mode. */
+ bool fRealOrV86;
+ /** The flags register. */
+ uint64_t uRFlags;
+ /** Trap error code. */
+ uint64_t uErrCd;
+ /** Segment registers (indexed by X86_SREG_XXX). */
+ uint16_t auSegs[6];
+
+ /** Bitmap tracking register we've loaded and which content can possibly be trusted. */
+ union
+ {
+ /** For effective clearing of the bits. */
+ uint32_t fAll;
+ /** Detailed view. */
+ struct
+ {
+ /** Bitmap indicating whether a GPR was loaded (parallel to auRegs). */
+ uint16_t fRegs;
+ /** Bitmap indicating whether a segment register was loaded (parallel to auSegs). */
+ uint8_t fSegs;
+ /** Set if uPc was loaded. */
+ RT_GCC_EXTENSION uint8_t fPc : 1;
+ /** Set if FrameAddr was loaded. */
+ RT_GCC_EXTENSION uint8_t fFrameAddr : 1;
+ /** Set if uRFlags was loaded. */
+ RT_GCC_EXTENSION uint8_t fRFlags : 1;
+ /** Set if uErrCd was loaded. */
+ RT_GCC_EXTENSION uint8_t fErrCd : 1;
+ } s;
+ } Loaded;
+ } x86;
+
+ /** @todo add ARM and others as needed. */
+ } u;
+
+ /**
+ * Stack read callback.
+ *
+ * @returns IPRT status code.
+ * @param pThis Pointer to this structure.
+ * @param uSp The stack pointer address.
+ * @param cbToRead The number of bytes to read.
+ * @param pvDst Where to put the bytes we read.
+ */
+ DECLCALLBACKMEMBER(int, pfnReadStack,(struct RTDBGUNWINDSTATE *pThis, RTUINTPTR uSp, size_t cbToRead, void *pvDst));
+ /** User argument (useful for pfnReadStack). */
+ void *pvUser;
+
+} RTDBGUNWINDSTATE;
+
+/**
+ * Try read a 16-bit value off the stack.
+ *
+ * @returns pfnReadStack result.
+ * @param pThis The unwind state.
+ * @param uSrcAddr The stack address.
+ * @param puDst The read destination.
+ */
+DECLINLINE(int) RTDbgUnwindLoadStackU16(PRTDBGUNWINDSTATE pThis, RTUINTPTR uSrcAddr, uint16_t *puDst)
+{
+ return pThis->pfnReadStack(pThis, uSrcAddr, sizeof(*puDst), puDst);
+}
+
+/**
+ * Try read a 32-bit value off the stack.
+ *
+ * @returns pfnReadStack result.
+ * @param pThis The unwind state.
+ * @param uSrcAddr The stack address.
+ * @param puDst The read destination.
+ */
+DECLINLINE(int) RTDbgUnwindLoadStackU32(PRTDBGUNWINDSTATE pThis, RTUINTPTR uSrcAddr, uint32_t *puDst)
+{
+ return pThis->pfnReadStack(pThis, uSrcAddr, sizeof(*puDst), puDst);
+}
+
+/**
+ * Try read a 64-bit value off the stack.
+ *
+ * @returns pfnReadStack result.
+ * @param pThis The unwind state.
+ * @param uSrcAddr The stack address.
+ * @param puDst The read destination.
+ */
+DECLINLINE(int) RTDbgUnwindLoadStackU64(PRTDBGUNWINDSTATE pThis, RTUINTPTR uSrcAddr, uint64_t *puDst)
+{
+ return pThis->pfnReadStack(pThis, uSrcAddr, sizeof(*puDst), puDst);
+}
+
+
+
+/** Max length (including '\\0') of a symbol name. */
+#define RTDBG_SYMBOL_NAME_LENGTH (512 - 8 - 8 - 8 - 4 - 4 - 8)
+
+/**
+ * Debug symbol.
+ */
+typedef struct RTDBGSYMBOL
+{
+ /** Symbol value (address).
+ * This depends a bit who you ask. It will be the same as offSeg when you
+ * as RTDbgMod, but the mapping address if you ask RTDbgAs. */
+ RTUINTPTR Value;
+ /** Symbol size. */
+ RTUINTPTR cb;
+ /** Offset into the segment specified by iSeg. */
+ RTUINTPTR offSeg;
+ /** Segment number. */
+ RTDBGSEGIDX iSeg;
+ /** Symbol Flags. (reserved). */
+ uint32_t fFlags;
+ /** Symbol ordinal.
+ * This is set to UINT32_MAX if the ordinals aren't supported. */
+ uint32_t iOrdinal;
+ /** Symbol name. */
+ char szName[RTDBG_SYMBOL_NAME_LENGTH];
+} RTDBGSYMBOL;
+/** Pointer to debug symbol. */
+typedef RTDBGSYMBOL *PRTDBGSYMBOL;
+/** Pointer to const debug symbol. */
+typedef const RTDBGSYMBOL *PCRTDBGSYMBOL;
+
+
+/**
+ * Allocate a new symbol structure.
+ *
+ * @returns Pointer to a new structure on success, NULL on failure.
+ */
+RTDECL(PRTDBGSYMBOL) RTDbgSymbolAlloc(void);
+
+/**
+ * Duplicates a symbol structure.
+ *
+ * @returns Pointer to duplicate on success, NULL on failure.
+ *
+ * @param pSymInfo The symbol info to duplicate.
+ */
+RTDECL(PRTDBGSYMBOL) RTDbgSymbolDup(PCRTDBGSYMBOL pSymInfo);
+
+/**
+ * Free a symbol structure previously allocated by a RTDbg method.
+ *
+ * @param pSymInfo The symbol info to free. NULL is ignored.
+ */
+RTDECL(void) RTDbgSymbolFree(PRTDBGSYMBOL pSymInfo);
+
+
+/** Max length (including '\\0') of a debug info file name. */
+#define RTDBG_FILE_NAME_LENGTH (260)
+
+
+/**
+ * Debug line number information.
+ */
+typedef struct RTDBGLINE
+{
+ /** Address.
+ * This depends a bit who you ask. It will be the same as offSeg when you
+ * as RTDbgMod, but the mapping address if you ask RTDbgAs. */
+ RTUINTPTR Address;
+ /** Offset into the segment specified by iSeg. */
+ RTUINTPTR offSeg;
+ /** Segment number. */
+ RTDBGSEGIDX iSeg;
+ /** Line number. */
+ uint32_t uLineNo;
+ /** Symbol ordinal.
+ * This is set to UINT32_MAX if the ordinals aren't supported. */
+ uint32_t iOrdinal;
+ /** Filename. */
+ char szFilename[RTDBG_FILE_NAME_LENGTH];
+} RTDBGLINE;
+/** Pointer to debug line number. */
+typedef RTDBGLINE *PRTDBGLINE;
+/** Pointer to const debug line number. */
+typedef const RTDBGLINE *PCRTDBGLINE;
+
+/**
+ * Allocate a new line number structure.
+ *
+ * @returns Pointer to a new structure on success, NULL on failure.
+ */
+RTDECL(PRTDBGLINE) RTDbgLineAlloc(void);
+
+/**
+ * Duplicates a line number structure.
+ *
+ * @returns Pointer to duplicate on success, NULL on failure.
+ *
+ * @param pLine The line number to duplicate.
+ */
+RTDECL(PRTDBGLINE) RTDbgLineDup(PCRTDBGLINE pLine);
+
+/**
+ * Free a line number structure previously allocated by a RTDbg method.
+ *
+ * @param pLine The line number to free. NULL is ignored.
+ */
+RTDECL(void) RTDbgLineFree(PRTDBGLINE pLine);
+
+
+/**
+ * Dump the stack of the current thread into @a pszStack.
+ *
+ * This could be a little slow as it reads image and debug info again for each call.
+ *
+ * @returns Length of string returned in @a pszStack.
+ * @param pszStack The output buffer.
+ * @param cbStack The size of the output buffer.
+ * @param fFlags Future flags, MBZ.
+ *
+ * @remarks Not present on all systems and contexts.
+ */
+RTDECL(size_t) RTDbgStackDumpSelf(char *pszStack, size_t cbStack, uint32_t fFlags);
+
+
+# ifdef IN_RING3
+
+/** @defgroup grp_rt_dbgcfg RTDbgCfg - Debugging Configuration
+ *
+ * The settings used when loading and processing debug info is kept in a
+ * RTDBGCFG instance since it's generally shared for a whole debugging session
+ * and anyhow would be a major pain to pass as individual parameters to each
+ * call. The debugging config API not only keeps the settings information but
+ * also provide APIs for making use of it, and in some cases, like for instance
+ * symbol severs, retriving and maintaining it.
+ *
+ * @todo Work in progress - APIs are still missing, adding when needed.
+ *
+ * @{
+ */
+
+/** Debugging configuration handle. */
+typedef struct RTDBGCFGINT *RTDBGCFG;
+/** Pointer to a debugging configuration handle. */
+typedef RTDBGCFG *PRTDBGCFG;
+/** NIL debug configuration handle. */
+#define NIL_RTDBGCFG ((RTDBGCFG)0)
+
+/** @name RTDBGCFG_FLAGS_XXX - Debugging configuration flags.
+ * @{ */
+/** Use deferred loading. */
+#define RTDBGCFG_FLAGS_DEFERRED RT_BIT_64(0)
+/** Don't use the symbol server (http). */
+#define RTDBGCFG_FLAGS_NO_SYM_SRV RT_BIT_64(1)
+/** Don't use system search paths.
+ * On windows this means not using _NT_ALT_SYMBOL_PATH, _NT_SYMBOL_PATH,
+ * _NT_SOURCE_PATH, and _NT_EXECUTABLE_PATH.
+ * On other systems the effect has yet to be determined. */
+#define RTDBGCFG_FLAGS_NO_SYSTEM_PATHS RT_BIT_64(2)
+/** Don't search the debug and image paths recursively. */
+#define RTDBGCFG_FLAGS_NO_RECURSIV_SEARCH RT_BIT_64(3)
+/** Don't search the source paths recursively. */
+#define RTDBGCFG_FLAGS_NO_RECURSIV_SRC_SEARCH RT_BIT_64(4)
+/** @} */
+
+/**
+ * Debugging configuration properties.
+ *
+ * The search paths are using the DOS convention of semicolon as separator
+ * character. The the special 'srv' + asterisk syntax known from the windows
+ * debugger search paths are also supported to some extent, as is 'cache' +
+ * asterisk.
+ */
+typedef enum RTDBGCFGPROP
+{
+ /** The customary invalid 0 value. */
+ RTDBGCFGPROP_INVALID = 0,
+ /** RTDBGCFG_FLAGS_XXX.
+ * Env: _FLAGS
+ * The environment variable can be specified as a unsigned value or one or more
+ * mnemonics separated by spaces. */
+ RTDBGCFGPROP_FLAGS,
+ /** List of paths to search for symbol files and images.
+ * Env: _PATH */
+ RTDBGCFGPROP_PATH,
+ /** List of symbol file suffixes (semicolon separated).
+ * Env: _SUFFIXES */
+ RTDBGCFGPROP_SUFFIXES,
+ /** List of paths to search for source files.
+ * Env: _SRC_PATH */
+ RTDBGCFGPROP_SRC_PATH,
+ /** End of valid values. */
+ RTDBGCFGPROP_END,
+ /** The customary 32-bit type hack. */
+ RTDBGCFGPROP_32BIT_HACK = 0x7fffffff
+} RTDBGCFGPROP;
+
+/**
+ * Configuration property change operation.
+ */
+typedef enum RTDBGCFGOP
+{
+ /** Customary invalid 0 value. */
+ RTDBGCFGOP_INVALID = 0,
+ /** Replace the current value with the given one. */
+ RTDBGCFGOP_SET,
+ /** Append the given value to the existing one. For integer values this is
+ * considered a bitwise OR operation. */
+ RTDBGCFGOP_APPEND,
+ /** Prepend the given value to the existing one. For integer values this is
+ * considered a bitwise OR operation. */
+ RTDBGCFGOP_PREPEND,
+ /** Removes the value from the existing one. For interger values the value is
+ * complemented and ANDed with the existing one, clearing all the specified
+ * flags/bits. */
+ RTDBGCFGOP_REMOVE,
+ /** End of valid values. */
+ RTDBGCFGOP_END,
+ /** Customary 32-bit type hack. */
+ RTDBGCFGOP_32BIT_HACK = 0x7fffffff
+} RTDBGCFGOP;
+
+
+
+/**
+ * Initializes a debugging configuration.
+ *
+ * @returns IPRT status code.
+ * @param phDbgCfg Where to return the configuration handle.
+ * @param pszEnvVarPrefix The environment variable prefix. If NULL, the
+ * environment is not consulted.
+ * @param fNativePaths Whether to pick up native paths from the
+ * environment.
+ *
+ * @sa RTDbgCfgChangeString, RTDbgCfgChangeUInt.
+ */
+RTDECL(int) RTDbgCfgCreate(PRTDBGCFG phDbgCfg, const char *pszEnvVarPrefix, bool fNativePaths);
+
+/**
+ * Retains a new reference to a debugging config.
+ *
+ * @returns New reference count.
+ * UINT32_MAX is returned if the handle is invalid (asserted).
+ * @param hDbgCfg The config handle.
+ */
+RTDECL(uint32_t) RTDbgCfgRetain(RTDBGCFG hDbgCfg);
+
+/**
+ * Releases a references to a debugging config.
+ *
+ * @returns New reference count, if 0 the config was freed. UINT32_MAX is
+ * returned if the handle is invalid (asserted).
+ * @param hDbgCfg The config handle.
+ */
+RTDECL(uint32_t) RTDbgCfgRelease(RTDBGCFG hDbgCfg);
+
+/**
+ * Changes a property value by string.
+ *
+ * For string values the string is used more or less as given. For integer
+ * values and flags, it can contains both values (ORed together) or property
+ * specific mnemonics (ORed / ~ANDed).
+ *
+ * @returns IPRT status code.
+ * @retval VERR_DBG_CFG_INVALID_VALUE
+ * @param hDbgCfg The debugging configuration handle.
+ * @param enmProp The property to change.
+ * @param enmOp How to change the property.
+ * @param pszValue The property value to apply.
+ */
+RTDECL(int) RTDbgCfgChangeString(RTDBGCFG hDbgCfg, RTDBGCFGPROP enmProp, RTDBGCFGOP enmOp, const char *pszValue);
+
+/**
+ * Changes a property value by unsigned integer (64-bit).
+ *
+ * This can only be applied to integer and flag properties.
+ *
+ * @returns IPRT status code.
+ * @retval VERR_DBG_CFG_NOT_UINT_PROP
+ * @param hDbgCfg The debugging configuration handle.
+ * @param enmProp The property to change.
+ * @param enmOp How to change the property.
+ * @param uValue The property value to apply.
+ */
+RTDECL(int) RTDbgCfgChangeUInt(RTDBGCFG hDbgCfg, RTDBGCFGPROP enmProp, RTDBGCFGOP enmOp, uint64_t uValue);
+
+/**
+ * Query a property value as string.
+ *
+ * Integer and flags properties are returned as a list of mnemonics if possible,
+ * otherwise as simple hex values.
+ *
+ * @returns IPRT status code.
+ * @retval VERR_BUFFER_OVERFLOW if there isn't sufficient buffer space. Nothing
+ * is written.
+ * @param hDbgCfg The debugging configuration handle.
+ * @param enmProp The property to change.
+ * @param pszValue The output buffer.
+ * @param cbValue The size of the output buffer.
+ */
+RTDECL(int) RTDbgCfgQueryString(RTDBGCFG hDbgCfg, RTDBGCFGPROP enmProp, char *pszValue, size_t cbValue);
+
+/**
+ * Query a property value as unsigned integer (64-bit).
+ *
+ * Only integer and flags properties can be queried this way.
+ *
+ * @returns IPRT status code.
+ * @retval VERR_DBG_CFG_NOT_UINT_PROP
+ * @param hDbgCfg The debugging configuration handle.
+ * @param enmProp The property to change.
+ * @param puValue Where to return the value.
+ */
+RTDECL(int) RTDbgCfgQueryUInt(RTDBGCFG hDbgCfg, RTDBGCFGPROP enmProp, uint64_t *puValue);
+
+/**
+ * Log callback.
+ *
+ * @param hDbgCfg The debug config instance.
+ * @param iLevel The message level.
+ * @param pszMsg The message.
+ * @param pvUser User argument.
+ */
+typedef DECLCALLBACKTYPE(void, FNRTDBGCFGLOG,(RTDBGCFG hDbgCfg, uint32_t iLevel, const char *pszMsg, void *pvUser));
+/** Pointer to a log callback. */
+typedef FNRTDBGCFGLOG *PFNRTDBGCFGLOG;
+
+/**
+ * Sets the log callback for the configuration.
+ *
+ * This will fail if there is already a log callback present, unless pfnCallback
+ * is NULL.
+ *
+ * @returns IPRT status code.
+ * @param hDbgCfg The debugging configuration handle.
+ * @param pfnCallback The callback function. NULL to unset.
+ * @param pvUser The user argument.
+ */
+RTDECL(int) RTDbgCfgSetLogCallback(RTDBGCFG hDbgCfg, PFNRTDBGCFGLOG pfnCallback, void *pvUser);
+
+/**
+ * Callback used by the RTDbgCfgOpen function to try out a file that was found.
+ *
+ * @returns On statuses other than VINF_CALLBACK_RETURN and
+ * VERR_CALLBACK_RETURN the search will continue till the end of the
+ * list. These status codes will not necessarily be propagated to the
+ * caller in any consistent manner.
+ * @retval VINF_CALLBACK_RETURN if successfully opened the file and it's time
+ * to return
+ * @retval VERR_CALLBACK_RETURN if we should stop searching immediately.
+ *
+ * @param hDbgCfg The debugging configuration handle.
+ * @param pszFilename The path to the file that should be tried out.
+ * @param pvUser1 First user parameter.
+ * @param pvUser2 Second user parameter.
+ */
+typedef DECLCALLBACKTYPE(int, FNRTDBGCFGOPEN,(RTDBGCFG hDbgCfg, const char *pszFilename, void *pvUser1, void *pvUser2));
+/** Pointer to a open-file callback used to the RTDbgCfgOpen functions. */
+typedef FNRTDBGCFGOPEN *PFNRTDBGCFGOPEN;
+
+
+RTDECL(int) RTDbgCfgOpenEx(RTDBGCFG hDbgCfg, const char *pszFilename, const char *pszCacheSubDir,
+ const char *pszUuidMappingSubDir, uint32_t fFlags,
+ PFNRTDBGCFGOPEN pfnCallback, void *pvUser1, void *pvUser2);
+RTDECL(int) RTDbgCfgOpenPeImage(RTDBGCFG hDbgCfg, const char *pszFilename, uint32_t cbImage, uint32_t uTimestamp,
+ PFNRTDBGCFGOPEN pfnCallback, void *pvUser1, void *pvUser2);
+RTDECL(int) RTDbgCfgOpenPdb70(RTDBGCFG hDbgCfg, const char *pszFilename, PCRTUUID pUuid, uint32_t uAge,
+ PFNRTDBGCFGOPEN pfnCallback, void *pvUser1, void *pvUser2);
+RTDECL(int) RTDbgCfgOpenPdb20(RTDBGCFG hDbgCfg, const char *pszFilename, uint32_t cbImage, uint32_t uTimestamp, uint32_t uAge,
+ PFNRTDBGCFGOPEN pfnCallback, void *pvUser1, void *pvUser2);
+RTDECL(int) RTDbgCfgOpenDbg(RTDBGCFG hDbgCfg, const char *pszFilename, uint32_t cbImage, uint32_t uTimestamp,
+ PFNRTDBGCFGOPEN pfnCallback, void *pvUser1, void *pvUser2);
+RTDECL(int) RTDbgCfgOpenDwo(RTDBGCFG hDbgCfg, const char *pszFilename, uint32_t uCrc32,
+ PFNRTDBGCFGOPEN pfnCallback, void *pvUser1, void *pvUser2);
+RTDECL(int) RTDbgCfgOpenDwoBuildId(RTDBGCFG hDbgCfg, const char *pszFilename, const uint8_t *pbBuildId,
+ size_t cbBuildId, PFNRTDBGCFGOPEN pfnCallback, void *pvUser1, void *pvUser2);
+RTDECL(int) RTDbgCfgOpenDsymBundle(RTDBGCFG hDbgCfg, const char *pszFilename, PCRTUUID pUuid,
+ PFNRTDBGCFGOPEN pfnCallback, void *pvUser1, void *pvUser2);
+RTDECL(int) RTDbgCfgOpenMachOImage(RTDBGCFG hDbgCfg, const char *pszFilename, PCRTUUID pUuid,
+ PFNRTDBGCFGOPEN pfnCallback, void *pvUser1, void *pvUser2);
+
+/** @name RTDBGCFG_O_XXX - Open flags for RTDbgCfgOpen.
+ * @{ */
+/** The operative system mask. The values are RT_OPSYS_XXX. */
+#define RTDBGCFG_O_OPSYS_MASK UINT32_C(0x000000ff)
+/** Use debuginfod style symbol servers when encountered in the path. */
+#define RTDBGCFG_O_DEBUGINFOD RT_BIT_32(24)
+/** Same as RTDBGCFG_FLAGS_NO_SYSTEM_PATHS. */
+#define RTDBGCFG_O_NO_SYSTEM_PATHS RT_BIT_32(25)
+/** The files may be compressed MS styled. */
+#define RTDBGCFG_O_MAYBE_COMPRESSED_MS RT_BIT_32(26)
+/** Whether to make a recursive search. */
+#define RTDBGCFG_O_RECURSIVE RT_BIT_32(27)
+/** We're looking for a separate debug file. */
+#define RTDBGCFG_O_EXT_DEBUG_FILE RT_BIT_32(28)
+/** We're looking for an executable image. */
+#define RTDBGCFG_O_EXECUTABLE_IMAGE RT_BIT_32(29)
+/** The file search should be done in an case insensitive fashion. */
+#define RTDBGCFG_O_CASE_INSENSITIVE RT_BIT_32(30)
+/** Use Windbg style symbol servers when encountered in the path. */
+#define RTDBGCFG_O_SYMSRV RT_BIT_32(31)
+/** Mask of valid flags. */
+#define RTDBGCFG_O_VALID_MASK UINT32_C(0xff0000ff)
+/** @} */
+
+
+/** @name Static symbol cache configuration
+ * @{ */
+/** The cache subdirectory containing the UUID mappings for .dSYM bundles.
+ * The UUID mappings implemented by IPRT are splitting the image/dsym UUID up
+ * into five 4 digit parts that maps to directories and one twelve digit part
+ * that maps to a symbolic link. The symlink points to the file in the
+ * Contents/Resources/DWARF/ directory of the .dSYM bundle for a .dSYM map, and
+ * to the image file (Contents/MacOS/bundlename for bundles) for image map.
+ *
+ * According to available documentation, both lldb and gdb are able to use these
+ * UUID maps to find debug info while debugging. See:
+ * http://lldb.llvm.org/symbols.html
+ */
+#define RTDBG_CACHE_UUID_MAP_DIR_DSYMS "dsym-uuids"
+/** The cache subdirectory containing the UUID mappings for image files. */
+#define RTDBG_CACHE_UUID_MAP_DIR_IMAGES "image-uuids"
+/** Suffix used for the cached .dSYM debug files.
+ * In .dSYM bundles only the .dSYM/Contents/Resources/DWARF/debug-file is
+ * copied into the cache, and in order to not clash with the stripped/rich image
+ * file, the cache tool slaps this suffix onto the name. */
+#define RTDBG_CACHE_DSYM_FILE_SUFFIX ".dwarf"
+/** @} */
+
+# endif /* IN_RING3 */
+
+/** @} */
+
+
+/** @defgroup grp_rt_dbgas RTDbgAs - Debug Address Space
+ * @{
+ */
+
+/**
+ * Creates an empty address space.
+ *
+ * @returns IPRT status code.
+ *
+ * @param phDbgAs Where to store the address space handle on success.
+ * @param FirstAddr The first address in the address space.
+ * @param LastAddr The last address in the address space.
+ * @param pszName The name of the address space.
+ */
+RTDECL(int) RTDbgAsCreate(PRTDBGAS phDbgAs, RTUINTPTR FirstAddr, RTUINTPTR LastAddr, const char *pszName);
+
+/**
+ * Variant of RTDbgAsCreate that takes a name format string.
+ *
+ * @returns IPRT status code.
+ *
+ * @param phDbgAs Where to store the address space handle on success.
+ * @param FirstAddr The first address in the address space.
+ * @param LastAddr The last address in the address space.
+ * @param pszNameFmt The name format of the address space.
+ * @param va Format arguments.
+ */
+RTDECL(int) RTDbgAsCreateV(PRTDBGAS phDbgAs, RTUINTPTR FirstAddr, RTUINTPTR LastAddr,
+ const char *pszNameFmt, va_list va) RT_IPRT_FORMAT_ATTR(4, 0);
+
+/**
+ * Variant of RTDbgAsCreate that takes a name format string.
+ *
+ * @returns IPRT status code.
+ *
+ * @param phDbgAs Where to store the address space handle on success.
+ * @param FirstAddr The first address in the address space.
+ * @param LastAddr The last address in the address space.
+ * @param pszNameFmt The name format of the address space.
+ * @param ... Format arguments.
+ */
+RTDECL(int) RTDbgAsCreateF(PRTDBGAS phDbgAs, RTUINTPTR FirstAddr, RTUINTPTR LastAddr,
+ const char *pszNameFmt, ...) RT_IPRT_FORMAT_ATTR(4, 5);
+
+/**
+ * Retains a reference to the address space.
+ *
+ * @returns New reference count, UINT32_MAX on invalid handle (asserted).
+ *
+ * @param hDbgAs The address space handle.
+ *
+ * @remarks Will not take any locks.
+ */
+RTDECL(uint32_t) RTDbgAsRetain(RTDBGAS hDbgAs);
+
+/**
+ * Release a reference to the address space.
+ *
+ * When the reference count reaches zero, the address space is destroyed.
+ * That means unlinking all the modules it currently contains, potentially
+ * causing some or all of them to be destroyed as they are managed by
+ * reference counting.
+ *
+ * @returns New reference count, UINT32_MAX on invalid handle (asserted).
+ *
+ * @param hDbgAs The address space handle. The NIL handle is quietly
+ * ignored and 0 is returned.
+ *
+ * @remarks Will not take any locks.
+ */
+RTDECL(uint32_t) RTDbgAsRelease(RTDBGAS hDbgAs);
+
+/**
+ * Locks the address space for exclusive access.
+ *
+ * @returns IRPT status code
+ * @param hDbgAs The address space handle.
+ */
+RTDECL(int) RTDbgAsLockExcl(RTDBGAS hDbgAs);
+
+/**
+ * Counters the actions of one RTDbgAsUnlockExcl call.
+ *
+ * @returns IRPT status code
+ * @param hDbgAs The address space handle.
+ */
+RTDECL(int) RTDbgAsUnlockExcl(RTDBGAS hDbgAs);
+
+/**
+ * Gets the name of an address space.
+ *
+ * @returns read only address space name.
+ * NULL if hDbgAs is invalid.
+ *
+ * @param hDbgAs The address space handle.
+ *
+ * @remarks Will not take any locks.
+ */
+RTDECL(const char *) RTDbgAsName(RTDBGAS hDbgAs);
+
+/**
+ * Gets the first address in an address space.
+ *
+ * @returns The address.
+ * 0 if hDbgAs is invalid.
+ *
+ * @param hDbgAs The address space handle.
+ *
+ * @remarks Will not take any locks.
+ */
+RTDECL(RTUINTPTR) RTDbgAsFirstAddr(RTDBGAS hDbgAs);
+
+/**
+ * Gets the last address in an address space.
+ *
+ * @returns The address.
+ * 0 if hDbgAs is invalid.
+ *
+ * @param hDbgAs The address space handle.
+ *
+ * @remarks Will not take any locks.
+ */
+RTDECL(RTUINTPTR) RTDbgAsLastAddr(RTDBGAS hDbgAs);
+
+/**
+ * Gets the number of modules in the address space.
+ *
+ * This can be used together with RTDbgAsModuleByIndex
+ * to enumerate the modules.
+ *
+ * @returns The number of modules.
+ *
+ * @param hDbgAs The address space handle.
+ *
+ * @remarks Will not take any locks.
+ */
+RTDECL(uint32_t) RTDbgAsModuleCount(RTDBGAS hDbgAs);
+
+/** @name Flags for RTDbgAsModuleLink and RTDbgAsModuleLinkSeg
+ * @{ */
+/** Replace all conflicting module.
+ * (The conflicting modules will be removed the address space and their
+ * references released.) */
+#define RTDBGASLINK_FLAGS_REPLACE RT_BIT_32(0)
+/** Mask containing the valid flags. */
+#define RTDBGASLINK_FLAGS_VALID_MASK UINT32_C(0x00000001)
+/** @} */
+
+/**
+ * Links a module into the address space at the give address.
+ *
+ * The size of the mapping is determined using RTDbgModImageSize().
+ *
+ * @returns IPRT status code.
+ * @retval VERR_OUT_OF_RANGE if the specified address will put the module
+ * outside the address space.
+ * @retval VERR_ADDRESS_CONFLICT if the mapping clashes with existing mappings.
+ *
+ * @param hDbgAs The address space handle.
+ * @param hDbgMod The module handle of the module to be linked in.
+ * @param ImageAddr The address to link the module at.
+ * @param fFlags See RTDBGASLINK_FLAGS_*.
+ */
+RTDECL(int) RTDbgAsModuleLink(RTDBGAS hDbgAs, RTDBGMOD hDbgMod, RTUINTPTR ImageAddr, uint32_t fFlags);
+
+/**
+ * Links a segment into the address space at the give address.
+ *
+ * The size of the mapping is determined using RTDbgModSegmentSize().
+ *
+ * @returns IPRT status code.
+ * @retval VERR_OUT_OF_RANGE if the specified address will put the module
+ * outside the address space.
+ * @retval VERR_ADDRESS_CONFLICT if the mapping clashes with existing mappings.
+ *
+ * @param hDbgAs The address space handle.
+ * @param hDbgMod The module handle.
+ * @param iSeg The segment number (0-based) of the segment to be
+ * linked in.
+ * @param SegAddr The address to link the segment at.
+ * @param fFlags See RTDBGASLINK_FLAGS_*.
+ */
+RTDECL(int) RTDbgAsModuleLinkSeg(RTDBGAS hDbgAs, RTDBGMOD hDbgMod, RTDBGSEGIDX iSeg, RTUINTPTR SegAddr, uint32_t fFlags);
+
+/**
+ * Unlinks all the mappings of a module from the address space.
+ *
+ * @returns IPRT status code.
+ * @retval VERR_NOT_FOUND if the module wasn't found.
+ *
+ * @param hDbgAs The address space handle.
+ * @param hDbgMod The module handle of the module to be unlinked.
+ */
+RTDECL(int) RTDbgAsModuleUnlink(RTDBGAS hDbgAs, RTDBGMOD hDbgMod);
+
+/**
+ * Unlinks the mapping at the specified address.
+ *
+ * @returns IPRT status code.
+ * @retval VERR_NOT_FOUND if no module or segment is mapped at that address.
+ *
+ * @param hDbgAs The address space handle.
+ * @param Addr The address within the mapping to be unlinked.
+ */
+RTDECL(int) RTDbgAsModuleUnlinkByAddr(RTDBGAS hDbgAs, RTUINTPTR Addr);
+
+/**
+ * Get a the handle of a module in the address space by is index.
+ *
+ * @returns A retained handle to the specified module. The caller must release
+ * the returned reference.
+ * NIL_RTDBGMOD if invalid index or handle.
+ *
+ * @param hDbgAs The address space handle.
+ * @param iModule The index of the module to get.
+ *
+ * @remarks The module indexes may change after calls to RTDbgAsModuleLink,
+ * RTDbgAsModuleLinkSeg, RTDbgAsModuleUnlink and
+ * RTDbgAsModuleUnlinkByAddr.
+ */
+RTDECL(RTDBGMOD) RTDbgAsModuleByIndex(RTDBGAS hDbgAs, uint32_t iModule);
+
+/**
+ * Queries mapping module information by handle.
+ *
+ * @returns IPRT status code.
+ * @retval VERR_NOT_FOUND if no mapping was found at the specified address.
+ *
+ * @param hDbgAs The address space handle.
+ * @param Addr Address within the mapping of the module or segment.
+ * @param phMod Where to the return the retained module handle.
+ * Optional.
+ * @param pAddr Where to return the base address of the mapping.
+ * Optional.
+ * @param piSeg Where to return the segment index. This is set to
+ * NIL if the entire module is mapped as a single
+ * mapping. Optional.
+ */
+RTDECL(int) RTDbgAsModuleByAddr(RTDBGAS hDbgAs, RTUINTPTR Addr, PRTDBGMOD phMod, PRTUINTPTR pAddr, PRTDBGSEGIDX piSeg);
+
+/**
+ * Queries mapping module information by name.
+ *
+ * @returns IPRT status code.
+ * @retval VERR_NOT_FOUND if no mapping was found at the specified address.
+ * @retval VERR_OUT_OF_RANGE if the name index was out of range.
+ *
+ * @param hDbgAs The address space handle.
+ * @param pszName The module name.
+ * @param iName There can be more than one module by the same name
+ * in an address space. This argument indicates which
+ * is meant. (0 based)
+ * @param phMod Where to the return the retained module handle.
+ */
+RTDECL(int) RTDbgAsModuleByName(RTDBGAS hDbgAs, const char *pszName, uint32_t iName, PRTDBGMOD phMod);
+
+/**
+ * Information about a mapping.
+ *
+ * This is used by RTDbgAsModuleGetMapByIndex.
+ */
+typedef struct RTDBGASMAPINFO
+{
+ /** The mapping address. */
+ RTUINTPTR Address;
+ /** The segment mapped there.
+ * This is NIL_RTDBGSEGIDX if the entire module image is mapped here. */
+ RTDBGSEGIDX iSeg;
+} RTDBGASMAPINFO;
+/** Pointer to info about an address space mapping. */
+typedef RTDBGASMAPINFO *PRTDBGASMAPINFO;
+/** Pointer to const info about an address space mapping. */
+typedef RTDBGASMAPINFO const *PCRTDBGASMAPINFO;
+
+/**
+ * Queries mapping information for a module given by index.
+ *
+ * @returns IRPT status code.
+ * @retval VERR_INVALID_HANDLE if hDbgAs is invalid.
+ * @retval VERR_OUT_OF_RANGE if the name index was out of range.
+ * @retval VINF_BUFFER_OVERFLOW if the array is too small and the returned
+ * information is incomplete.
+ *
+ * @param hDbgAs The address space handle.
+ * @param iModule The index of the module to get.
+ * @param paMappings Where to return the mapping information. The buffer
+ * size is given by *pcMappings.
+ * @param pcMappings IN: Size of the paMappings array. OUT: The number of
+ * entries returned.
+ * @param fFlags Flags for reserved for future use. MBZ.
+ *
+ * @remarks See remarks for RTDbgAsModuleByIndex regarding the volatility of the
+ * iModule parameter.
+ */
+RTDECL(int) RTDbgAsModuleQueryMapByIndex(RTDBGAS hDbgAs, uint32_t iModule, PRTDBGASMAPINFO paMappings, uint32_t *pcMappings, uint32_t fFlags);
+
+/**
+ * Adds a symbol to a module in the address space.
+ *
+ * @returns IPRT status code. See RTDbgModSymbolAdd for more specific ones.
+ * @retval VERR_INVALID_HANDLE if hDbgAs is invalid.
+ * @retval VERR_NOT_FOUND if no module was found at the specified address.
+ * @retval VERR_NOT_SUPPORTED if the module interpret doesn't support adding
+ * custom symbols.
+ *
+ * @param hDbgAs The address space handle.
+ * @param pszSymbol The symbol name.
+ * @param Addr The address of the symbol.
+ * @param cb The size of the symbol.
+ * @param fFlags Symbol flags, RTDBGSYMBOLADD_F_XXX.
+ * @param piOrdinal Where to return the symbol ordinal on success. If
+ * the interpreter doesn't do ordinals, this will be set to
+ * UINT32_MAX. Optional
+ */
+RTDECL(int) RTDbgAsSymbolAdd(RTDBGAS hDbgAs, const char *pszSymbol, RTUINTPTR Addr, RTUINTPTR cb, uint32_t fFlags, uint32_t *piOrdinal);
+
+/**
+ * Query a symbol by address.
+ *
+ * @returns IPRT status code. See RTDbgModSymbolAddr for more specific ones.
+ * @retval VERR_INVALID_HANDLE if hDbgAs is invalid.
+ * @retval VERR_NOT_FOUND if the address couldn't be mapped to a module.
+ * @retval VERR_INVALID_PARAMETER if incorrect flags.
+ *
+ * @param hDbgAs The address space handle.
+ * @param Addr The address which closest symbol is requested.
+ * @param fFlags Symbol search flags, see RTDBGSYMADDR_FLAGS_XXX.
+ * @param poffDisp Where to return the distance between the symbol
+ * and address. Optional.
+ * @param pSymbol Where to return the symbol info.
+ * @param phMod Where to return the module handle. Optional.
+ */
+RTDECL(int) RTDbgAsSymbolByAddr(RTDBGAS hDbgAs, RTUINTPTR Addr, uint32_t fFlags,
+ PRTINTPTR poffDisp, PRTDBGSYMBOL pSymbol, PRTDBGMOD phMod);
+
+/**
+ * Query a symbol by address.
+ *
+ * @returns IPRT status code. See RTDbgModSymbolAddrA for more specific ones.
+ * @retval VERR_INVALID_HANDLE if hDbgAs is invalid.
+ * @retval VERR_NOT_FOUND if the address couldn't be mapped to a module.
+ * @retval VERR_INVALID_PARAMETER if incorrect flags.
+ *
+ * @param hDbgAs The address space handle.
+ * @param Addr The address which closest symbol is requested.
+ * @param fFlags Symbol search flags, see RTDBGSYMADDR_FLAGS_XXX.
+ * @param poffDisp Where to return the distance between the symbol
+ * and address. Optional.
+ * @param ppSymInfo Where to return the pointer to the allocated symbol
+ * info. Always set. Free with RTDbgSymbolFree.
+ * @param phMod Where to return the module handle. Optional.
+ */
+RTDECL(int) RTDbgAsSymbolByAddrA(RTDBGAS hDbgAs, RTUINTPTR Addr, uint32_t fFlags,
+ PRTINTPTR poffDisp, PRTDBGSYMBOL *ppSymInfo, PRTDBGMOD phMod);
+
+/**
+ * Query a symbol by name.
+ *
+ * @returns IPRT status code.
+ * @retval VERR_SYMBOL_NOT_FOUND if not found.
+ *
+ * @param hDbgAs The address space handle.
+ * @param pszSymbol The symbol name. It is possible to limit the scope
+ * of the search by prefixing the symbol with a module
+ * name pattern followed by a bang (!) character.
+ * RTStrSimplePatternNMatch is used for the matching.
+ * @param pSymbol Where to return the symbol info.
+ * @param phMod Where to return the module handle. Optional.
+ */
+RTDECL(int) RTDbgAsSymbolByName(RTDBGAS hDbgAs, const char *pszSymbol, PRTDBGSYMBOL pSymbol, PRTDBGMOD phMod);
+
+/**
+ * Query a symbol by name, allocating the returned symbol structure.
+ *
+ * @returns IPRT status code.
+ * @retval VERR_SYMBOL_NOT_FOUND if not found.
+ *
+ * @param hDbgAs The address space handle.
+ * @param pszSymbol The symbol name. See RTDbgAsSymbolByName for more.
+ * @param ppSymbol Where to return the pointer to the allocated
+ * symbol info. Always set. Free with RTDbgSymbolFree.
+ * @param phMod Where to return the module handle. Optional.
+ */
+RTDECL(int) RTDbgAsSymbolByNameA(RTDBGAS hDbgAs, const char *pszSymbol, PRTDBGSYMBOL *ppSymbol, PRTDBGMOD phMod);
+
+/**
+ * Adds a line number to a module in the address space.
+ *
+ * @returns IPRT status code. See RTDbgModLineAdd for more specific ones.
+ * @retval VERR_INVALID_HANDLE if hDbgAs is invalid.
+ * @retval VERR_NOT_FOUND if no module was found at the specified address.
+ * @retval VERR_NOT_SUPPORTED if the module interpret doesn't support adding
+ * custom symbols.
+ *
+ * @param hDbgAs The address space handle.
+ * @param pszFile The file name.
+ * @param uLineNo The line number.
+ * @param Addr The address of the symbol.
+ * @param piOrdinal Where to return the line number ordinal on success.
+ * If the interpreter doesn't do ordinals, this will be
+ * set to UINT32_MAX. Optional.
+ */
+RTDECL(int) RTDbgAsLineAdd(RTDBGAS hDbgAs, const char *pszFile, uint32_t uLineNo, RTUINTPTR Addr, uint32_t *piOrdinal);
+
+/**
+ * Query a line number by address.
+ *
+ * @returns IPRT status code. See RTDbgModLineAddrA for more specific ones.
+ * @retval VERR_INVALID_HANDLE if hDbgAs is invalid.
+ * @retval VERR_NOT_FOUND if the address couldn't be mapped to a module.
+ *
+ * @param hDbgAs The address space handle.
+ * @param Addr The address which closest symbol is requested.
+ * @param poffDisp Where to return the distance between the line
+ * number and address.
+ * @param pLine Where to return the line number information.
+ * @param phMod Where to return the module handle. Optional.
+ */
+RTDECL(int) RTDbgAsLineByAddr(RTDBGAS hDbgAs, RTUINTPTR Addr, PRTINTPTR poffDisp, PRTDBGLINE pLine, PRTDBGMOD phMod);
+
+/**
+ * Query a line number by address.
+ *
+ * @returns IPRT status code. See RTDbgModLineAddrA for more specific ones.
+ * @retval VERR_INVALID_HANDLE if hDbgAs is invalid.
+ * @retval VERR_NOT_FOUND if the address couldn't be mapped to a module.
+ *
+ * @param hDbgAs The address space handle.
+ * @param Addr The address which closest symbol is requested.
+ * @param poffDisp Where to return the distance between the line
+ * number and address.
+ * @param ppLine Where to return the pointer to the allocated line
+ * number info. Always set. Free with RTDbgLineFree.
+ * @param phMod Where to return the module handle. Optional.
+ */
+RTDECL(int) RTDbgAsLineByAddrA(RTDBGAS hDbgAs, RTUINTPTR Addr, PRTINTPTR poffDisp, PRTDBGLINE *ppLine, PRTDBGMOD phMod);
+
+/** @todo Missing some bits here. */
+
+/** @} */
+
+
+# ifdef IN_RING3
+/** @defgroup grp_rt_dbgmod RTDbgMod - Debug Module Interpreter
+ * @{
+ */
+
+/**
+ * Creates a module based on the default debug info container.
+ *
+ * This can be used to manually load a module and its symbol. The primary user
+ * group is the debug info interpreters, which use this API to create an
+ * efficient debug info container behind the scenes and forward all queries to
+ * it once the info has been loaded.
+ *
+ * @returns IPRT status code.
+ *
+ * @param phDbgMod Where to return the module handle.
+ * @param pszName The name of the module (mandatory).
+ * @param cbSeg The size of initial segment. If zero, segments will
+ * have to be added manually using RTDbgModSegmentAdd.
+ * @param fFlags Flags reserved for future extensions, MBZ for now.
+ */
+RTDECL(int) RTDbgModCreate(PRTDBGMOD phDbgMod, const char *pszName, RTUINTPTR cbSeg, uint32_t fFlags);
+
+RTDECL(int) RTDbgModCreateFromImage(PRTDBGMOD phDbgMod, const char *pszFilename, const char *pszName,
+ RTLDRARCH enmArch, RTDBGCFG hDbgCfg);
+RTDECL(int) RTDbgModCreateFromMap(PRTDBGMOD phDbgMod, const char *pszFilename, const char *pszName, RTUINTPTR uSubtrahend,
+ RTDBGCFG hDbgCfg);
+RTDECL(int) RTDbgModCreateFromPeImage(PRTDBGMOD phDbgMod, const char *pszFilename, const char *pszName,
+ PRTLDRMOD phLdrMod, uint32_t cbImage, uint32_t uTimeDateStamp, RTDBGCFG hDbgCfg);
+RTDECL(int) RTDbgModCreateFromDbg(PRTDBGMOD phDbgMod, const char *pszFilename, const char *pszName, uint32_t cbImage,
+ uint32_t uTimeDateStamp, RTDBGCFG hDbgCfg);
+RTDECL(int) RTDbgModCreateFromPdb(PRTDBGMOD phDbgMod, const char *pszFilename, const char *pszName, uint32_t cbImage,
+ PCRTUUID pUuid, uint32_t Age, RTDBGCFG hDbgCfg);
+RTDECL(int) RTDbgModCreateFromDwo(PRTDBGMOD phDbgMod, const char *pszFilename, const char *pszName, uint32_t cbImage,
+ uint32_t uCrc32, RTDBGCFG hDbgCfg);
+RTDECL(int) RTDbgModCreateFromMachOImage(PRTDBGMOD phDbgMod, const char *pszFilename, const char *pszName,
+ RTLDRARCH enmArch, PRTLDRMOD phLdrModIn, uint32_t cbImage, uint32_t cSegs,
+ PCRTDBGSEGMENT paSegs, PCRTUUID pUuid, RTDBGCFG hDbgCfg, uint32_t fFlags);
+
+/** @name Flags for RTDbgModCreate and friends.
+ * @{ */
+/** Overrides the hDbgCfg settings and forces an image and/or symbol file
+ * search. RTDbgModCreate will quietly ignore this flag. */
+#define RTDBGMOD_F_NOT_DEFERRED RT_BIT_32(0)
+/** Mach-O: Load the __LINKEDIT segment (@sa RTLDR_O_MACHO_LOAD_LINKEDIT). */
+#define RTDBGMOD_F_MACHO_LOAD_LINKEDIT RT_BIT_32(1)
+/** Valid flag mask. */
+#define RTDBGMOD_F_VALID_MASK UINT32_C(0x00000003)
+/** @} */
+
+
+/**
+ * Retains another reference to the module.
+ *
+ * @returns New reference count, UINT32_MAX on invalid handle (asserted).
+ *
+ * @param hDbgMod The module handle.
+ *
+ * @remarks Will not take any locks.
+ */
+RTDECL(uint32_t) RTDbgModRetain(RTDBGMOD hDbgMod);
+
+/**
+ * Release a reference to the module.
+ *
+ * When the reference count reaches zero, the module is destroyed.
+ *
+ * @returns New reference count, UINT32_MAX on invalid handle (asserted).
+ *
+ * @param hDbgMod The module handle. The NIL handle is quietly ignored
+ * and 0 is returned.
+ *
+ * @remarks Will not take any locks.
+ */
+RTDECL(uint32_t) RTDbgModRelease(RTDBGMOD hDbgMod);
+
+/**
+ * Removes all content from the debug module (container), optionally only
+ * leaving segments and image size intact.
+ *
+ * This is only possible on container modules, i.e. created by RTDbgModCreate().
+ *
+ * @returns IPRT status code.
+ * @param hDbgMod The module handle.
+ * @param fLeaveSegments Whether to leave segments (and image size) as is.
+ */
+RTDECL(int) RTDbgModRemoveAll(RTDBGMOD hDbgMod, bool fLeaveSegments);
+
+/**
+ * Gets the module name.
+ *
+ * @returns Pointer to a read only string containing the name.
+ *
+ * @param hDbgMod The module handle.
+ */
+RTDECL(const char *) RTDbgModName(RTDBGMOD hDbgMod);
+
+/**
+ * Gets the name of the debug info file we're using.
+ *
+ * @returns Pointer to a read only string containing the filename, NULL if we
+ * don't use one.
+ *
+ * @param hDbgMod The module handle.
+ */
+RTDECL(const char *) RTDbgModDebugFile(RTDBGMOD hDbgMod);
+
+/**
+ * Gets the image filename (as specified by the user).
+ *
+ * @returns Pointer to a read only string containing the filename.
+ *
+ * @param hDbgMod The module handle.
+ */
+RTDECL(const char *) RTDbgModImageFile(RTDBGMOD hDbgMod);
+
+/**
+ * Gets the image filename actually used if it differs from RTDbgModImageFile.
+ *
+ * @returns Pointer to a read only string containing the filename, NULL if same
+ * as RTDBgModImageFile.
+ *
+ * @param hDbgMod The module handle.
+ */
+RTDECL(const char *) RTDbgModImageFileUsed(RTDBGMOD hDbgMod);
+
+/**
+ * Checks if the loading of the debug info has been postponed.
+ *
+ * @returns true if postponed, false if not or invalid handle.
+ * @param hDbgMod The module handle.
+ */
+RTDECL(bool) RTDbgModIsDeferred(RTDBGMOD hDbgMod);
+
+/**
+ * Checks if the debug info is exports only.
+ *
+ * @returns true if exports only, false if not or invalid handle.
+ * @param hDbgMod The module handle.
+ */
+RTDECL(bool) RTDbgModIsExports(RTDBGMOD hDbgMod);
+
+/**
+ * Converts an image relative address to a segment:offset address.
+ *
+ * @returns Segment index on success.
+ * NIL_RTDBGSEGIDX is returned if the module handle or the RVA are
+ * invalid.
+ *
+ * @param hDbgMod The module handle.
+ * @param uRva The image relative address to convert.
+ * @param poffSeg Where to return the segment offset. Optional.
+ */
+RTDECL(RTDBGSEGIDX) RTDbgModRvaToSegOff(RTDBGMOD hDbgMod, RTUINTPTR uRva, PRTUINTPTR poffSeg);
+
+/**
+ * Gets the module tag value if any.
+ *
+ * @returns The tag. 0 if hDbgMod is invalid.
+ *
+ * @param hDbgMod The module handle.
+ */
+RTDECL(uint64_t) RTDbgModGetTag(RTDBGMOD hDbgMod);
+
+/**
+ * Tags or untags the module.
+ *
+ * @returns IPRT status code.
+ * @retval VERR_INVALID_HANDLE if hDbgMod is invalid.
+ *
+ * @param hDbgMod The module handle.
+ * @param uTag The tag value. The convention is that 0 is no tag
+ * and any other value means it's tagged. It's adviced
+ * to use some kind of unique number like an address
+ * (global or string cache for instance) to avoid
+ * collisions with other users
+ */
+RTDECL(int) RTDbgModSetTag(RTDBGMOD hDbgMod, uint64_t uTag);
+
+
+/**
+ * Image size when mapped if segments are mapped adjacently.
+ *
+ * For ELF, PE, and Mach-O images this is (usually) a natural query, for LX and
+ * NE and such it's a bit odder and the answer may not make much sense for them.
+ *
+ * @returns Image mapped size.
+ * RTUINTPTR_MAX is returned if the handle is invalid.
+ *
+ * @param hDbgMod The module handle.
+ */
+RTDECL(RTUINTPTR) RTDbgModImageSize(RTDBGMOD hDbgMod);
+
+/**
+ * Gets the image format.
+ *
+ * @returns Image format.
+ * @retval RTLDRFMT_INVALID if the handle is invalid or if the format isn't known.
+ * @param hDbgMod The debug module handle.
+ * @sa RTLdrGetFormat
+ */
+RTDECL(RTLDRFMT) RTDbgModImageGetFormat(RTDBGMOD hDbgMod);
+
+/**
+ * Gets the image architecture.
+ *
+ * @returns Image architecture.
+ * @retval RTLDRARCH_INVALID if the handle is invalid.
+ * @retval RTLDRARCH_WHATEVER if unknown.
+ * @param hDbgMod The debug module handle.
+ * @sa RTLdrGetArch
+ */
+RTDECL(RTLDRARCH) RTDbgModImageGetArch(RTDBGMOD hDbgMod);
+
+/**
+ * Generic method for querying image properties.
+ *
+ * @returns IPRT status code.
+ * @retval VERR_NOT_SUPPORTED if the property query isn't supported (either all
+ * or that specific property). The caller must handle this result.
+ * @retval VERR_NOT_FOUND the property was not found in the module. The caller
+ * must also normally deal with this.
+ * @retval VERR_INVALID_FUNCTION if the function value is wrong.
+ * @retval VERR_INVALID_PARAMETER if the fixed buffer size is wrong. Correct
+ * size in @a *pcbRet.
+ * @retval VERR_BUFFER_OVERFLOW if the function doesn't have a fixed size
+ * buffer and the buffer isn't big enough. Correct size in @a *pcbRet.
+ * @retval VERR_INVALID_HANDLE if the handle is invalid.
+ *
+ * @param hDbgMod The debug module handle.
+ * @param enmProp The property to query.
+ * @param pvBuf Pointer to the input / output buffer. In most cases
+ * it's only used for returning data.
+ * @param cbBuf The size of the buffer.
+ * @param pcbRet Where to return the amount of data returned. On
+ * buffer size errors, this is set to the correct size.
+ * Optional.
+ * @sa RTLdrQueryPropEx
+ */
+RTDECL(int) RTDbgModImageQueryProp(RTDBGMOD hDbgMod, RTLDRPROP enmProp, void *pvBuf, size_t cbBuf, size_t *pcbRet);
+
+
+/**
+ * Adds a segment to the module. Optional feature.
+ *
+ * This method is intended used for manually constructing debug info for a
+ * module. The main usage is from other debug info interpreters that want to
+ * avoid writing a debug info database and instead uses the standard container
+ * behind the scenes.
+ *
+ * @returns IPRT status code.
+ * @retval VERR_NOT_SUPPORTED if this feature isn't support by the debug info
+ * interpreter. This is a common return code.
+ * @retval VERR_INVALID_HANDLE if hDbgMod is invalid.
+ * @retval VERR_DBG_ADDRESS_WRAP if uRva+cb wraps around.
+ * @retval VERR_DBG_SEGMENT_NAME_OUT_OF_RANGE if pszName is too short or long.
+ * @retval VERR_INVALID_PARAMETER if fFlags contains undefined flags.
+ * @retval VERR_DBG_SPECIAL_SEGMENT if *piSeg is a special segment.
+ * @retval VERR_DBG_INVALID_SEGMENT_INDEX if *piSeg doesn't meet expectations.
+ *
+ * @param hDbgMod The module handle.
+ * @param uRva The image relative address of the segment.
+ * @param cb The size of the segment.
+ * @param pszName The segment name. Does not normally need to be
+ * unique, although this is somewhat up to the
+ * debug interpreter to decide.
+ * @param fFlags Segment flags. Reserved for future used, MBZ.
+ * @param piSeg The segment index or NIL_RTDBGSEGIDX on input.
+ * The assigned segment index on successful return.
+ * Optional.
+ */
+RTDECL(int) RTDbgModSegmentAdd(RTDBGMOD hDbgMod, RTUINTPTR uRva, RTUINTPTR cb, const char *pszName,
+ uint32_t fFlags, PRTDBGSEGIDX piSeg);
+
+/**
+ * Gets the number of segments in the module.
+ *
+ * This is can be used to determine the range which can be passed to
+ * RTDbgModSegmentByIndex and derivates.
+ *
+ * @returns The segment relative address.
+ * NIL_RTDBGSEGIDX if the handle is invalid.
+ *
+ * @param hDbgMod The module handle.
+ */
+RTDECL(RTDBGSEGIDX) RTDbgModSegmentCount(RTDBGMOD hDbgMod);
+
+/**
+ * Query information about a segment.
+ *
+ * This can be used together with RTDbgModSegmentCount to enumerate segments.
+ * The index starts a 0 and stops one below RTDbgModSegmentCount.
+ *
+ * @returns IPRT status code.
+ * @retval VERR_DBG_INVALID_SEGMENT_INDEX if iSeg is too high.
+ * @retval VERR_DBG_SPECIAL_SEGMENT if iSeg indicates a special segment.
+ * @retval VERR_INVALID_HANDLE if hDbgMod is invalid.
+ *
+ * @param hDbgMod The module handle.
+ * @param iSeg The segment index. No special segments.
+ * @param pSegInfo Where to return the segment info. The
+ * RTDBGSEGMENT::Address member will be set to
+ * RTUINTPTR_MAX or the load address used at link time.
+ */
+RTDECL(int) RTDbgModSegmentByIndex(RTDBGMOD hDbgMod, RTDBGSEGIDX iSeg, PRTDBGSEGMENT pSegInfo);
+
+/**
+ * Gets the size of a segment.
+ *
+ * This is a just a wrapper around RTDbgModSegmentByIndex.
+ *
+ * @returns The segment size.
+ * RTUINTPTR_MAX is returned if either the handle and segment index are
+ * invalid.
+ *
+ * @param hDbgMod The module handle.
+ * @param iSeg The segment index. RTDBGSEGIDX_ABS is not allowed.
+ * If RTDBGSEGIDX_RVA is used, the functions returns
+ * the same value as RTDbgModImageSize.
+ */
+RTDECL(RTUINTPTR) RTDbgModSegmentSize(RTDBGMOD hDbgMod, RTDBGSEGIDX iSeg);
+
+/**
+ * Gets the image relative address of a segment.
+ *
+ * This is a just a wrapper around RTDbgModSegmentByIndex.
+ *
+ * @returns The segment relative address.
+ * RTUINTPTR_MAX is returned if either the handle and segment index are
+ * invalid.
+ *
+ * @param hDbgMod The module handle.
+ * @param iSeg The segment index. No special segment indexes
+ * allowed (asserted).
+ */
+RTDECL(RTUINTPTR) RTDbgModSegmentRva(RTDBGMOD hDbgMod, RTDBGSEGIDX iSeg);
+
+
+/**
+ * Adds a line number to the module.
+ *
+ * @returns IPRT status code.
+ * @retval VERR_NOT_SUPPORTED if the module interpret doesn't support adding
+ * custom symbols. This is a common place occurrence.
+ * @retval VERR_INVALID_HANDLE if hDbgMod is invalid.
+ * @retval VERR_DBG_SYMBOL_NAME_OUT_OF_RANGE if the symbol name is too long or
+ * short.
+ * @retval VERR_DBG_INVALID_RVA if an image relative address is specified and
+ * it's not inside any of the segments defined by the module.
+ * @retval VERR_DBG_INVALID_SEGMENT_INDEX if the segment index isn't valid.
+ * @retval VERR_DBG_INVALID_SEGMENT_OFFSET if the segment offset is beyond the
+ * end of the segment.
+ * @retval VERR_DBG_ADDRESS_WRAP if off+cb wraps around.
+ * @retval VERR_INVALID_PARAMETER if the symbol flags sets undefined bits.
+ * @retval VERR_DBG_DUPLICATE_SYMBOL
+ * @retval VERR_DBG_ADDRESS_CONFLICT
+ *
+ * @param hDbgMod The module handle.
+ * @param pszSymbol The symbol name.
+ * @param iSeg The segment index.
+ * @param off The segment offset.
+ * @param cb The size of the symbol. Can be zero, although this
+ * may depend somewhat on the debug interpreter.
+ * @param fFlags Symbol flags, RTDBGSYMBOLADD_F_XXX.
+ * @param piOrdinal Where to return the symbol ordinal on success. If
+ * the interpreter doesn't do ordinals, this will be set to
+ * UINT32_MAX. Optional.
+ */
+RTDECL(int) RTDbgModSymbolAdd(RTDBGMOD hDbgMod, const char *pszSymbol, RTDBGSEGIDX iSeg, RTUINTPTR off,
+ RTUINTPTR cb, uint32_t fFlags, uint32_t *piOrdinal);
+
+/**
+ * Gets the symbol count.
+ *
+ * This can be used together wtih RTDbgModSymbolByOrdinal or
+ * RTDbgModSymbolByOrdinalA to enumerate all the symbols.
+ *
+ * @returns The number of symbols in the module.
+ * UINT32_MAX is returned if the module handle is invalid or some other
+ * error occurs.
+ *
+ * @param hDbgMod The module handle.
+ */
+RTDECL(uint32_t) RTDbgModSymbolCount(RTDBGMOD hDbgMod);
+
+/**
+ * Queries symbol information by ordinal number.
+ *
+ * @returns IPRT status code.
+ * @retval VERR_SYMBOL_NOT_FOUND if there is no symbol at the given number.
+ * @retval VERR_DBG_NO_SYMBOLS if there aren't any symbols.
+ * @retval VERR_INVALID_HANDLE if hDbgMod is invalid.
+ * @retval VERR_NOT_SUPPORTED if lookup by ordinal is not supported.
+ *
+ * @param hDbgMod The module handle.
+ * @param iOrdinal The symbol ordinal number. 0-based. The highest
+ * number is RTDbgModSymbolCount() - 1.
+ * @param pSymInfo Where to store the symbol information.
+ */
+RTDECL(int) RTDbgModSymbolByOrdinal(RTDBGMOD hDbgMod, uint32_t iOrdinal, PRTDBGSYMBOL pSymInfo);
+
+/**
+ * Queries symbol information by ordinal number.
+ *
+ * @returns IPRT status code.
+ * @retval VERR_DBG_NO_SYMBOLS if there aren't any symbols.
+ * @retval VERR_NOT_SUPPORTED if lookup by ordinal is not supported.
+ * @retval VERR_SYMBOL_NOT_FOUND if there is no symbol at the given number.
+ * @retval VERR_NO_MEMORY if RTDbgSymbolAlloc fails.
+ *
+ * @param hDbgMod The module handle.
+ * @param iOrdinal The symbol ordinal number. 0-based. The highest
+ * number is RTDbgModSymbolCount() - 1.
+ * @param ppSymInfo Where to store the pointer to the returned
+ * symbol information. Always set. Free with
+ * RTDbgSymbolFree.
+ */
+RTDECL(int) RTDbgModSymbolByOrdinalA(RTDBGMOD hDbgMod, uint32_t iOrdinal, PRTDBGSYMBOL *ppSymInfo);
+
+/**
+ * Queries symbol information by address.
+ *
+ * The returned symbol is what the debug info interpreter considers the symbol
+ * most applicable to the specified address. This usually means a symbol with an
+ * address equal or lower than the requested.
+ *
+ * @returns IPRT status code.
+ * @retval VERR_SYMBOL_NOT_FOUND if no suitable symbol was found.
+ * @retval VERR_DBG_NO_SYMBOLS if there aren't any symbols.
+ * @retval VERR_INVALID_HANDLE if hDbgMod is invalid.
+ * @retval VERR_DBG_INVALID_RVA if an image relative address is specified and
+ * it's not inside any of the segments defined by the module.
+ * @retval VERR_DBG_INVALID_SEGMENT_INDEX if the segment index isn't valid.
+ * @retval VERR_DBG_INVALID_SEGMENT_OFFSET if the segment offset is beyond the
+ * end of the segment.
+ * @retval VERR_INVALID_PARAMETER if incorrect flags.
+ *
+ * @param hDbgMod The module handle.
+ * @param iSeg The segment number.
+ * @param off The offset into the segment.
+ * @param fFlags Symbol search flags, see RTDBGSYMADDR_FLAGS_XXX.
+ * @param poffDisp Where to store the distance between the
+ * specified address and the returned symbol.
+ * Optional.
+ * @param pSymInfo Where to store the symbol information.
+ */
+RTDECL(int) RTDbgModSymbolByAddr(RTDBGMOD hDbgMod, RTDBGSEGIDX iSeg, RTUINTPTR off, uint32_t fFlags,
+ PRTINTPTR poffDisp, PRTDBGSYMBOL pSymInfo);
+
+/**
+ * Queries symbol information by address.
+ *
+ * The returned symbol is what the debug info interpreter considers the symbol
+ * most applicable to the specified address. This usually means a symbol with an
+ * address equal or lower than the requested.
+ *
+ * @returns IPRT status code.
+ * @retval VERR_SYMBOL_NOT_FOUND if no suitable symbol was found.
+ * @retval VERR_DBG_NO_SYMBOLS if there aren't any symbols.
+ * @retval VERR_INVALID_HANDLE if hDbgMod is invalid.
+ * @retval VERR_DBG_INVALID_RVA if an image relative address is specified and
+ * it's not inside any of the segments defined by the module.
+ * @retval VERR_DBG_INVALID_SEGMENT_INDEX if the segment index isn't valid.
+ * @retval VERR_DBG_INVALID_SEGMENT_OFFSET if the segment offset is beyond the
+ * end of the segment.
+ * @retval VERR_NO_MEMORY if RTDbgSymbolAlloc fails.
+ * @retval VERR_INVALID_PARAMETER if incorrect flags.
+ *
+ * @param hDbgMod The module handle.
+ * @param iSeg The segment index.
+ * @param off The offset into the segment.
+ * @param fFlags Symbol search flags, see RTDBGSYMADDR_FLAGS_XXX.
+ * @param poffDisp Where to store the distance between the
+ * specified address and the returned symbol. Optional.
+ * @param ppSymInfo Where to store the pointer to the returned
+ * symbol information. Always set. Free with
+ * RTDbgSymbolFree.
+ */
+RTDECL(int) RTDbgModSymbolByAddrA(RTDBGMOD hDbgMod, RTDBGSEGIDX iSeg, RTUINTPTR off, uint32_t fFlags,
+ PRTINTPTR poffDisp, PRTDBGSYMBOL *ppSymInfo);
+
+/**
+ * Queries symbol information by symbol name.
+ *
+ * @returns IPRT status code.
+ * @retval VERR_DBG_NO_SYMBOLS if there aren't any symbols.
+ * @retval VERR_SYMBOL_NOT_FOUND if no suitable symbol was found.
+ * @retval VERR_DBG_SYMBOL_NAME_OUT_OF_RANGE if the symbol name is too long or
+ * short.
+ *
+ * @param hDbgMod The module handle.
+ * @param pszSymbol The symbol name.
+ * @param pSymInfo Where to store the symbol information.
+ */
+RTDECL(int) RTDbgModSymbolByName(RTDBGMOD hDbgMod, const char *pszSymbol, PRTDBGSYMBOL pSymInfo);
+
+/**
+ * Queries symbol information by symbol name.
+ *
+ * @returns IPRT status code.
+ * @retval VERR_DBG_NO_SYMBOLS if there aren't any symbols.
+ * @retval VERR_SYMBOL_NOT_FOUND if no suitable symbol was found.
+ * @retval VERR_DBG_SYMBOL_NAME_OUT_OF_RANGE if the symbol name is too long or
+ * short.
+ * @retval VERR_NO_MEMORY if RTDbgSymbolAlloc fails.
+ *
+ * @param hDbgMod The module handle.
+ * @param pszSymbol The symbol name.
+ * @param ppSymInfo Where to store the pointer to the returned
+ * symbol information. Always set. Free with
+ * RTDbgSymbolFree.
+ */
+RTDECL(int) RTDbgModSymbolByNameA(RTDBGMOD hDbgMod, const char *pszSymbol, PRTDBGSYMBOL *ppSymInfo);
+
+/**
+ * Adds a line number to the module.
+ *
+ * @returns IPRT status code.
+ * @retval VERR_NOT_SUPPORTED if the module interpret doesn't support adding
+ * custom symbols. This should be consider a normal response.
+ * @retval VERR_INVALID_HANDLE if hDbgMod is invalid.
+ * @retval VERR_DBG_FILE_NAME_OUT_OF_RANGE if the file name is too longer or
+ * empty.
+ * @retval VERR_DBG_INVALID_RVA if an image relative address is specified and
+ * it's not inside any of the segments defined by the module.
+ * @retval VERR_DBG_INVALID_SEGMENT_INDEX if the segment index isn't valid.
+ * @retval VERR_DBG_INVALID_SEGMENT_OFFSET if the segment offset is beyond the
+ * end of the segment.
+ * @retval VERR_INVALID_PARAMETER if the line number flags sets undefined bits.
+ *
+ * @param hDbgMod The module handle.
+ * @param pszFile The file name.
+ * @param uLineNo The line number.
+ * @param iSeg The segment index.
+ * @param off The segment offset.
+ * @param piOrdinal Where to return the line number ordinal on
+ * success. If the interpreter doesn't do ordinals,
+ * this will be set to UINT32_MAX. Optional.
+ */
+RTDECL(int) RTDbgModLineAdd(RTDBGMOD hDbgMod, const char *pszFile, uint32_t uLineNo,
+ RTDBGSEGIDX iSeg, RTUINTPTR off, uint32_t *piOrdinal);
+
+/**
+ * Gets the line number count.
+ *
+ * This can be used together wtih RTDbgModLineByOrdinal or RTDbgModSymbolByLineA
+ * to enumerate all the line number information.
+ *
+ * @returns The number of line numbers in the module.
+ * UINT32_MAX is returned if the module handle is invalid or some other
+ * error occurs.
+ *
+ * @param hDbgMod The module handle.
+ */
+RTDECL(uint32_t) RTDbgModLineCount(RTDBGMOD hDbgMod);
+
+/**
+ * Queries line number information by ordinal number.
+ *
+ * This can be used to enumerate the line numbers for the module. Use
+ * RTDbgModLineCount() to figure the end of the ordinals.
+ *
+ * @returns IPRT status code.
+ * @retval VERR_DBG_NO_LINE_NUMBERS if there aren't any line numbers.
+ * @retval VERR_DBG_LINE_NOT_FOUND if there is no line number with that
+ * ordinal.
+ * @retval VERR_INVALID_HANDLE if hDbgMod is invalid.
+
+ * @param hDbgMod The module handle.
+ * @param iOrdinal The line number ordinal number.
+ * @param pLineInfo Where to store the information about the line
+ * number.
+ */
+RTDECL(int) RTDbgModLineByOrdinal(RTDBGMOD hDbgMod, uint32_t iOrdinal, PRTDBGLINE pLineInfo);
+
+/**
+ * Queries line number information by ordinal number.
+ *
+ * This can be used to enumerate the line numbers for the module. Use
+ * RTDbgModLineCount() to figure the end of the ordinals.
+ *
+ * @returns IPRT status code.
+ * @retval VERR_DBG_NO_LINE_NUMBERS if there aren't any line numbers.
+ * @retval VERR_DBG_LINE_NOT_FOUND if there is no line number with that
+ * ordinal.
+ * @retval VERR_INVALID_HANDLE if hDbgMod is invalid.
+ * @retval VERR_NO_MEMORY if RTDbgLineAlloc fails.
+ *
+ * @param hDbgMod The module handle.
+ * @param iOrdinal The line number ordinal number.
+ * @param ppLineInfo Where to store the pointer to the returned line
+ * number information. Always set. Free with
+ * RTDbgLineFree.
+ */
+RTDECL(int) RTDbgModLineByOrdinalA(RTDBGMOD hDbgMod, uint32_t iOrdinal, PRTDBGLINE *ppLineInfo);
+
+/**
+ * Queries line number information by address.
+ *
+ * The returned line number is what the debug info interpreter considers the
+ * one most applicable to the specified address. This usually means a line
+ * number with an address equal or lower than the requested.
+ *
+ * @returns IPRT status code.
+ * @retval VERR_DBG_NO_LINE_NUMBERS if there aren't any line numbers.
+ * @retval VERR_DBG_LINE_NOT_FOUND if no suitable line number was found.
+ * @retval VERR_INVALID_HANDLE if hDbgMod is invalid.
+ * @retval VERR_DBG_INVALID_RVA if an image relative address is specified and
+ * it's not inside any of the segments defined by the module.
+ * @retval VERR_DBG_INVALID_SEGMENT_INDEX if the segment index isn't valid.
+ * @retval VERR_DBG_INVALID_SEGMENT_OFFSET if the segment offset is beyond the
+ * end of the segment.
+ *
+ * @param hDbgMod The module handle.
+ * @param iSeg The segment number.
+ * @param off The offset into the segment.
+ * @param poffDisp Where to store the distance between the
+ * specified address and the returned symbol.
+ * Optional.
+ * @param pLineInfo Where to store the line number information.
+ */
+RTDECL(int) RTDbgModLineByAddr(RTDBGMOD hDbgMod, RTDBGSEGIDX iSeg, RTUINTPTR off, PRTINTPTR poffDisp, PRTDBGLINE pLineInfo);
+
+/**
+ * Queries line number information by address.
+ *
+ * The returned line number is what the debug info interpreter considers the
+ * one most applicable to the specified address. This usually means a line
+ * number with an address equal or lower than the requested.
+ *
+ * @returns IPRT status code.
+ * @retval VERR_DBG_NO_LINE_NUMBERS if there aren't any line numbers.
+ * @retval VERR_DBG_LINE_NOT_FOUND if no suitable line number was found.
+ * @retval VERR_INVALID_HANDLE if hDbgMod is invalid.
+ * @retval VERR_DBG_INVALID_RVA if an image relative address is specified and
+ * it's not inside any of the segments defined by the module.
+ * @retval VERR_DBG_INVALID_SEGMENT_INDEX if the segment index isn't valid.
+ * @retval VERR_DBG_INVALID_SEGMENT_OFFSET if the segment offset is beyond the
+ * end of the segment.
+ * @retval VERR_NO_MEMORY if RTDbgLineAlloc fails.
+ *
+ * @param hDbgMod The module handle.
+ * @param iSeg The segment number.
+ * @param off The offset into the segment.
+ * @param poffDisp Where to store the distance between the
+ * specified address and the returned symbol.
+ * Optional.
+ * @param ppLineInfo Where to store the pointer to the returned line
+ * number information. Always set. Free with
+ * RTDbgLineFree.
+ */
+RTDECL(int) RTDbgModLineByAddrA(RTDBGMOD hDbgMod, RTDBGSEGIDX iSeg, RTUINTPTR off, PRTINTPTR poffDisp, PRTDBGLINE *ppLineInfo);
+
+/**
+ * Try use unwind information to unwind one frame.
+ *
+ * @returns IPRT status code. Last informational status from stack reader callback.
+ * @retval VERR_DBG_NO_UNWIND_INFO if the module contains no unwind information.
+ * @retval VERR_DBG_UNWIND_INFO_NOT_FOUND if no unwind information was found
+ * for the location given by iSeg:off.
+ *
+ * @param hDbgMod The module handle.
+ * @param iSeg The segment number of the program counter.
+ * @param off The offset into @a iSeg. Together with @a iSeg
+ * this corresponds to the RTDBGUNWINDSTATE::uPc
+ * value pointed to by @a pState.
+ * @param pState The unwind state to work.
+ *
+ * @sa RTLdrUnwindFrame
+ */
+RTDECL(int) RTDbgModUnwindFrame(RTDBGMOD hDbgMod, RTDBGSEGIDX iSeg, RTUINTPTR off, PRTDBGUNWINDSTATE pState);
+
+/** @} */
+# endif /* IN_RING3 */
+
+
+
+/** @name Kernel Debug Info API
+ *
+ * This is a specialized API for obtaining symbols and structure information
+ * about the running kernel. It is relatively OS specific. Its purpose and
+ * operation is doesn't map all that well onto RTDbgMod, so a few dedicated
+ * functions was created for it.
+ *
+ * @{ */
+
+/** Handle to the kernel debug info. */
+typedef struct RTDBGKRNLINFOINT *RTDBGKRNLINFO;
+/** Pointer to a kernel debug info handle. */
+typedef RTDBGKRNLINFO *PRTDBGKRNLINFO;
+/** Nil kernel debug info handle. */
+#define NIL_RTDBGKRNLINFO ((RTDBGKRNLINFO)0)
+
+/**
+ * Opens the kernel debug info.
+ *
+ * @returns IPRT status code. Can fail for any number of reasons.
+ *
+ * @param phKrnlInfo Where to return the kernel debug info handle on
+ * success.
+ * @param fFlags Flags reserved for future use. Must be zero.
+ */
+RTR0DECL(int) RTR0DbgKrnlInfoOpen(PRTDBGKRNLINFO phKrnlInfo, uint32_t fFlags);
+
+/**
+ * Retains a reference to the kernel debug info handle.
+ *
+ * @returns New reference count, UINT32_MAX on invalid handle (asserted).
+ * @param hKrnlInfo The kernel info handle.
+ */
+RTR0DECL(uint32_t) RTR0DbgKrnlInfoRetain(RTDBGKRNLINFO hKrnlInfo);
+
+
+/**
+ * Releases a reference to the kernel debug info handle, destroying it when the
+ * counter reaches zero.
+ *
+ * @returns New reference count, UINT32_MAX on invalid handle (asserted).
+ * @param hKrnlInfo The kernel info handle. NIL_RTDBGKRNLINFO is
+ * quietly ignored.
+ */
+RTR0DECL(uint32_t) RTR0DbgKrnlInfoRelease(RTDBGKRNLINFO hKrnlInfo);
+
+/**
+ * Queries the offset (in bytes) of a member of a kernel structure.
+ *
+ * @returns IPRT status code.
+ * @retval VINF_SUCCESS and offset at @a poffMember.
+ * @retval VERR_NOT_FOUND if the structure or the member was not found.
+ * @retval VERR_INVALID_HANDLE if hKrnlInfo is bad.
+ * @retval VERR_INVALID_POINTER if any of the pointers are bad.
+ *
+ * @param hKrnlInfo The kernel info handle.
+ * @param pszModule The name of the module to search, pass NULL to
+ * search the default kernel module(s).
+ * @param pszStructure The structure name.
+ * @param pszMember The member name.
+ * @param poffMember Where to return the offset.
+ */
+RTR0DECL(int) RTR0DbgKrnlInfoQueryMember(RTDBGKRNLINFO hKrnlInfo, const char *pszModule, const char *pszStructure,
+ const char *pszMember, size_t *poffMember);
+
+
+/**
+ * Queries the value (usually the address) of a kernel symbol.
+ *
+ * This may go looking for the symbol in other modules, in which case it will
+ * always check the kernel symbol table first.
+ *
+ * @returns IPRT status code.
+ * @retval VINF_SUCCESS and value at @a ppvSymbol.
+ * @retval VERR_SYMBOL_NOT_FOUND
+ * @retval VERR_INVALID_HANDLE if hKrnlInfo is bad.
+ * @retval VERR_INVALID_POINTER if any of the pointers are bad.
+ *
+ * @param hKrnlInfo The kernel info handle.
+ * @param pszModule The name of the module to search, pass NULL to
+ * search the default kernel module(s).
+ * @param pszSymbol The C name of the symbol.
+ * On Windows NT there are the following special symbols:
+ * - __ImageBase: The base address of the module.
+ * - __ImageSize: The size of the module.
+ * - __ImageNtHdrs: Address of the NT headers.
+ * @param ppvSymbol Where to return the symbol value, passing NULL is
+ * OK. This may be modified even on failure, in
+ * particular, it will be set to NULL when
+ * VERR_SYMBOL_NOT_FOUND is returned.
+ *
+ * @sa RTR0DbgKrnlInfoGetSymbol, RTLdrGetSymbol
+ */
+RTR0DECL(int) RTR0DbgKrnlInfoQuerySymbol(RTDBGKRNLINFO hKrnlInfo, const char *pszModule,
+ const char *pszSymbol, void **ppvSymbol);
+
+/**
+ * Wrapper around RTR0DbgKrnlInfoQuerySymbol that returns the symbol.
+ *
+ * @return Symbol address if found, NULL if not found or some invalid parameter
+ * or something.
+ * @param hKrnlInfo The kernel info handle.
+ * @param pszModule The name of the module to search, pass NULL to
+ * search the default kernel module(s).
+ * @param pszSymbol The C name of the symbol.
+ * On Windows NT there are the following special symbols:
+ * - __ImageBase: The base address of the module.
+ * - __ImageSize: The size of the module.
+ * - __ImageNtHdrs: Address of the NT headers.
+ * @sa RTR0DbgKrnlInfoQuerySymbol, RTLdrGetSymbol
+ */
+RTR0DECL(void *) RTR0DbgKrnlInfoGetSymbol(RTDBGKRNLINFO hKrnlInfo, const char *pszModule, const char *pszSymbol);
+
+/**
+ * Queries the size (in bytes) of a kernel data type.
+ *
+ * @returns IPRT status code.
+ * @retval VINF_SUCCESS and size at @a pcbType.
+ * @retval VERR_NOT_FOUND if the type was not found.
+ * @retval VERR_INVALID_HANDLE if hKrnlInfo is bad.
+ * @retval VERR_INVALID_POINTER if any of the pointers are bad.
+ * @retval VERR_WRONG_TYPE if the type was not a valid data type (e.g. a
+ * function)
+ *
+ * @param hKrnlInfo The kernel info handle.
+ * @param pszModule The name of the module to search, pass NULL to
+ * search the default kernel module(s).
+ * @param pszType The type name.
+ * @param pcbType Where to return the size of the type.
+ */
+RTR0DECL(int) RTR0DbgKrnlInfoQuerySize(RTDBGKRNLINFO hKrnlInfo, const char *pszModule,
+ const char *pszType, size_t *pcbType);
+/** @} */
+
+/** @} */
+
+RT_C_DECLS_END
+
+#endif /* !IPRT_INCLUDED_dbg_h */
+