Index: /trunk/src/VBox/Runtime/testcase/Makefile.kmk
===================================================================
--- /trunk/src/VBox/Runtime/testcase/Makefile.kmk	(revision 31324)
+++ /trunk/src/VBox/Runtime/testcase/Makefile.kmk	(revision 31325)
@@ -505,4 +505,15 @@
 endif # VBOX_WITH_TESTCASES
 
+
+#
+# Various useful tools
+#
+
+# RTLdrFlt is similar to c++filt, except that it's for VMMR0.r0 stacks.
+PROGRAMS += RTLdrFlt
+RTLdrFlt_SOURCES = RTLdrFlt.cpp
+
+
+
 include	$(KBUILD_PATH)/subfooter.kmk
 
Index: /trunk/src/VBox/Runtime/testcase/RTLdrFlt.cpp
===================================================================
--- /trunk/src/VBox/Runtime/testcase/RTLdrFlt.cpp	(revision 31325)
+++ /trunk/src/VBox/Runtime/testcase/RTLdrFlt.cpp	(revision 31325)
@@ -0,0 +1,249 @@
+/* $Id$ */
+/** @file
+ * IPRT - Utility for translating addresses into symbols+offset.
+ */
+
+/*
+ * Copyright (C) 2006-2010 Oracle Corporation
+ *
+ * This file is part of VirtualBox Open Source Edition (OSE), as
+ * available from http://www.virtualbox.org. This file is free software;
+ * you can redistribute it and/or modify it under the terms of the GNU
+ * General Public License (GPL) as published by the Free Software
+ * Foundation, in version 2 as it comes in the "COPYING" file of the
+ * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
+ * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
+ *
+ * The contents of this file may alternatively be used under the terms
+ * of the Common Development and Distribution License Version 1.0
+ * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
+ * VirtualBox OSE 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.
+ */
+
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include <iprt/mem.h>
+#include <iprt/assert.h>
+#include <iprt/ctype.h>
+#include <iprt/dbg.h>
+#include <iprt/err.h>
+#include <iprt/getopt.h>
+#include <iprt/initterm.h>
+#include <iprt/message.h>
+#include <iprt/stream.h>
+#include <iprt/string.h>
+
+
+
+/**
+ * Tries to parse out an address at the head of the string.
+ *
+ * @returns true if found address, false if not.
+ * @param   psz                 Where to start parsing.
+ * @param   pcchAddress         Where to store the address length.
+ * @param   pu64Address         Where to store the address value.
+ */
+static bool TryParseAddress(const char *psz, size_t *pcchAddress, uint64_t *pu64Address)
+{
+    const char *pszStart = psz;
+
+    /*
+     * Hex prefix?
+     */
+    if (psz[0] == '0' && (psz[1] == 'x' || psz[1] == 'X'))
+        psz += 2;
+
+    /*
+     * How many hex digits?  We want at least 4 and at most 16.
+     */
+    size_t off = 0;
+    while (RT_C_IS_XDIGIT(psz[off]))
+        off++;
+    if (off < 4 || off > 16)
+        return false;
+
+    /*
+     * Check for separator (xxxxxxxx'yyyyyyyy).
+     */
+    bool fHave64bitSep = off <= 8
+                      && psz[off] == '\''
+                      && RT_C_IS_XDIGIT(psz[off + 1])
+                      && RT_C_IS_XDIGIT(psz[off + 2])
+                      && RT_C_IS_XDIGIT(psz[off + 3])
+                      && RT_C_IS_XDIGIT(psz[off + 4])
+                      && RT_C_IS_XDIGIT(psz[off + 5])
+                      && RT_C_IS_XDIGIT(psz[off + 6])
+                      && RT_C_IS_XDIGIT(psz[off + 7])
+                      && RT_C_IS_XDIGIT(psz[off + 8])
+                      && !RT_C_IS_XDIGIT(psz[off + 9]);
+    if (fHave64bitSep)
+    {
+        uint32_t u32High;
+        int rc = RTStrToUInt32Ex(psz, NULL, 16, &u32High);
+        if (rc != VWRN_TRAILING_CHARS)
+            return false;
+
+        uint32_t u32Low;
+        rc = RTStrToUInt32Ex(&psz[off + 1], NULL, 16, &u32Low);
+        if (   rc != VINF_SUCCESS
+            && rc != VWRN_TRAILING_SPACES
+            && rc != VWRN_TRAILING_CHARS)
+            return false;
+
+        *pu64Address = RT_MAKE_U64(u32Low, u32High);
+        off += 1 + 8;
+    }
+    else
+    {
+        int rc = RTStrToUInt64Ex(psz, NULL, 16, pu64Address);
+        if (   rc != VINF_SUCCESS
+            && rc != VWRN_TRAILING_SPACES
+            && rc != VWRN_TRAILING_CHARS)
+            return false;
+    }
+
+    *pcchAddress = psz + off - pszStart;
+    return true;
+}
+
+
+int main(int argc, char **argv)
+{
+    int rc = RTR3Init();
+    if (RT_FAILURE(rc))
+        return RTMsgInitFailure(rc);
+
+    /*
+     * Create an empty address space that we can load modules and stuff into
+     * as we parse the parameters.
+     */
+    RTDBGAS hAs;
+    rc = RTDbgAsCreate(&hAs, 0, RTUINTPTR_MAX, "");
+    if (RT_FAILURE(rc))
+        return RTMsgErrorExit(RTEXITCODE_FAILURE, "RTDBgAsCreate -> %Rrc\n", rc);
+
+
+    /*
+     * Parse arguments.
+     */
+    static const RTGETOPTDEF s_aOptions[] =
+    {
+        { "--later", 'l', RTGETOPT_REQ_STRING },
+    };
+
+    RTGETOPTUNION   ValueUnion;
+    RTGETOPTSTATE   GetState;
+    RTGetOptInit(&GetState, argc, argv, s_aOptions, RT_ELEMENTS(s_aOptions), 1, 0);
+    while ((rc = RTGetOpt(&GetState, &ValueUnion)))
+    {
+        switch (rc)
+        {
+            case 'h':
+                RTPrintf("help: todo\n");
+                break;
+
+            case 'V':
+                RTPrintf("$Revision$");
+                return RTEXITCODE_SUCCESS;
+
+            case VINF_GETOPT_NOT_OPTION:
+            {
+                /* <address> <module> */
+                rc = RTGetOptFetchValue(&GetState, &ValueUnion, RTGETOPT_REQ_UINT64 | RTGETOPT_FLAG_HEX);
+                if (RT_FAILURE(rc))
+                    return RTGetOptPrintError(rc, &ValueUnion);
+                uint64_t u64Address = ValueUnion.u64;
+
+                rc = RTGetOptFetchValue(&GetState, &ValueUnion, RTGETOPT_REQ_STRING);
+                if (RT_FAILURE(rc))
+                    return RTGetOptPrintError(rc, &ValueUnion);
+                const char *pszModule = ValueUnion.psz;
+
+                RTDBGMOD hMod;
+                rc = RTDbgModCreateFromImage(&hMod, pszModule, NULL, 0 /*fFlags*/);
+                if (RT_FAILURE(rc))
+                    return RTMsgErrorExit(RTEXITCODE_FAILURE, "RTDbgModCreateFromImage(,%s,,) -> %Rrc\n", pszModule, rc);
+
+                rc = RTDbgAsModuleLink(hAs, hMod, u64Address, 0 /* fFlags */);
+                if (RT_FAILURE(rc))
+                    return RTMsgErrorExit(RTEXITCODE_FAILURE, "RTDbgAsModuleLink(,%s,%llx,) -> %Rrc\n", pszModule, u64Address, rc);
+                break;
+            }
+
+            default:
+                return RTGetOptPrintError(rc, &ValueUnion);
+        }
+    }
+
+    /*
+     * Read text from standard input and see if there is anything we can translate.
+     */
+    for (;;)
+    {
+        /* Get a line. */
+        char szLine[_64K];
+        rc = RTStrmGetLine(g_pStdIn, szLine, sizeof(szLine));
+        if (rc == VERR_EOF)
+            break;
+        if (RT_FAILURE(rc))
+            return RTMsgErrorExit(RTEXITCODE_FAILURE, "RTStrmGetLine() -> %Rrc\n", rc);
+
+        /*
+         * Search the line for potential addresses and replace them with
+         * symbols+offset.
+         */
+        const char *pszStart = szLine;
+        const char *psz      = szLine;
+        char        ch;
+        while ((ch = *psz) != '\0')
+        {
+            size_t      cchAddress;
+            uint64_t    u64Address;
+
+            if (   (   ch == '0'
+                    && (psz[1] == 'x' || psz[1] == 'X')
+                    && TryParseAddress(psz, &cchAddress, &u64Address))
+                || (   RT_C_IS_XDIGIT(ch)
+                    && TryParseAddress(psz, &cchAddress, &u64Address))
+               )
+            {
+                if (pszStart != psz)
+                    RTStrmWrite(g_pStdOut, pszStart, psz - pszStart);
+                pszStart = psz;
+
+                RTDBGSYMBOL Symbol;
+                RTINTPTR    off;
+                rc = RTDbgAsSymbolByAddr(hAs, u64Address, &off, &Symbol, NULL);
+                if (RT_SUCCESS(rc))
+                {
+                    if (!off)
+                        RTStrmPrintf(g_pStdOut, "%.*s=[%s]", cchAddress, psz, Symbol.szName);
+                    else if (off > 0)
+                        RTStrmPrintf(g_pStdOut, "%.*s=[%s+%#llx]", cchAddress, psz, Symbol.szName, off);
+                    else
+                        RTStrmPrintf(g_pStdOut, "%.*s=[%s-%#llx]", cchAddress, psz, Symbol.szName, -off);
+                    psz += cchAddress;
+                    pszStart = psz;
+                }
+                else
+                    psz += cchAddress;
+            }
+            else
+                psz++;
+        }
+
+        if (pszStart != psz)
+            RTStrmWrite(g_pStdOut, pszStart, psz - pszStart);
+        RTStrmPutCh(g_pStdOut, '\n');
+
+    }
+
+    return RTEXITCODE_SUCCESS;
+}
+
