/* $Id: dbgmodcontainer.cpp $ */ /** @file * IPRT - Debug Info Container. */ /* * Copyright (C) 2009-2020 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 * *********************************************************************************************************************************/ #define LOG_GROUP RTLOGGROUP_DBG #include #include "internal/iprt.h" #include #include #include #include #define RTDBGMODCNT_WITH_MEM_CACHE #ifdef RTDBGMODCNT_WITH_MEM_CACHE # include #endif #include #include #include "internal/dbgmod.h" /********************************************************************************************************************************* * Structures and Typedefs * *********************************************************************************************************************************/ /** * Symbol entry. */ typedef struct RTDBGMODCTNSYMBOL { /** The address core. */ AVLRUINTPTRNODECORE AddrCore; /** The name space core. */ RTSTRSPACECORE NameCore; /** The ordinal number core. */ AVLU32NODECORE OrdinalCore; /** The segment index. */ RTDBGSEGIDX iSeg; /** The symbol flags. */ uint32_t fFlags; /** The symbol size. * This may be zero while the range in AddrCore indicates 0. */ RTUINTPTR cb; } RTDBGMODCTNSYMBOL; /** Pointer to a symbol entry in the debug info container. */ typedef RTDBGMODCTNSYMBOL *PRTDBGMODCTNSYMBOL; /** Pointer to a const symbol entry in the debug info container. */ typedef RTDBGMODCTNSYMBOL const *PCRTDBGMODCTNSYMBOL; /** * Line number entry. */ typedef struct RTDBGMODCTNLINE { /** The address core. * The Key is the address of the line number. */ AVLUINTPTRNODECORE AddrCore; /** The ordinal number core. */ AVLU32NODECORE OrdinalCore; /** Pointer to the file name (in string cache). */ const char *pszFile; /** The line number. */ uint32_t uLineNo; /** The segment index. */ RTDBGSEGIDX iSeg; } RTDBGMODCTNLINE; /** Pointer to a line number entry. */ typedef RTDBGMODCTNLINE *PRTDBGMODCTNLINE; /** Pointer to const a line number entry. */ typedef RTDBGMODCTNLINE const *PCRTDBGMODCTNLINE; /** * Segment entry. */ typedef struct RTDBGMODCTNSEGMENT { /** The symbol address space tree. */ AVLRUINTPTRTREE SymAddrTree; /** The line number address space tree. */ AVLUINTPTRTREE LineAddrTree; /** The segment offset. */ RTUINTPTR off; /** The segment size. */ RTUINTPTR cb; /** The segment flags. */ uint32_t fFlags; /** The segment name. */ const char *pszName; } RTDBGMODCTNSEGMENT; /** Pointer to a segment entry in the debug info container. */ typedef RTDBGMODCTNSEGMENT *PRTDBGMODCTNSEGMENT; /** Pointer to a const segment entry in the debug info container. */ typedef RTDBGMODCTNSEGMENT const *PCRTDBGMODCTNSEGMENT; /** * Instance data. */ typedef struct RTDBGMODCTN { /** The name space. */ RTSTRSPACE Names; /** Tree containing any absolute addresses. */ AVLRUINTPTRTREE AbsAddrTree; /** Tree organizing the symbols by ordinal number. */ AVLU32TREE SymbolOrdinalTree; /** Tree organizing the line numbers by ordinal number. */ AVLU32TREE LineOrdinalTree; /** Segment table. */ PRTDBGMODCTNSEGMENT paSegs; /** The number of segments in the segment table. */ RTDBGSEGIDX cSegs; /** The image size. 0 means unlimited. */ RTUINTPTR cb; /** The next symbol ordinal. */ uint32_t iNextSymbolOrdinal; /** The next line number ordinal. */ uint32_t iNextLineOrdinal; #ifdef RTDBGMODCNT_WITH_MEM_CACHE /** Line number allocator. * Using a cache is a bit overkill since we normally won't free them, but * it's a construct that exists and does the job relatively efficiently. */ RTMEMCACHE hLineNumAllocator; #endif } RTDBGMODCTN; /** Pointer to instance data for the debug info container. */ typedef RTDBGMODCTN *PRTDBGMODCTN; /** @interface_method_impl{RTDBGMODVTDBG,pfnUnwindFrame} */ static DECLCALLBACK(int) rtDbgModContainer_UnwindFrame(PRTDBGMODINT pMod, RTDBGSEGIDX iSeg, RTUINTPTR off, PRTDBGUNWINDSTATE pState) { RT_NOREF(pMod, iSeg, off, pState); return VERR_DBG_NO_UNWIND_INFO; } /** * Fills in a RTDBGSYMBOL structure. * * @returns VINF_SUCCESS. * @param pMySym Our internal symbol representation. * @param pExtSym The external symbol representation. */ DECLINLINE(int) rtDbgModContainerReturnSymbol(PCRTDBGMODCTNSYMBOL pMySym, PRTDBGSYMBOL pExtSym) { pExtSym->Value = pMySym->AddrCore.Key; pExtSym->offSeg = pMySym->AddrCore.Key; pExtSym->iSeg = pMySym->iSeg; pExtSym->fFlags = pMySym->fFlags; pExtSym->cb = pMySym->cb; pExtSym->iOrdinal = pMySym->OrdinalCore.Key; Assert(pMySym->NameCore.cchString < sizeof(pExtSym->szName)); memcpy(pExtSym->szName, pMySym->NameCore.pszString, pMySym->NameCore.cchString + 1); return VINF_SUCCESS; } /** @copydoc RTDBGMODVTDBG::pfnLineByAddr */ static DECLCALLBACK(int) rtDbgModContainer_LineByAddr(PRTDBGMODINT pMod, RTDBGSEGIDX iSeg, RTUINTPTR off, PRTINTPTR poffDisp, PRTDBGLINE pLineInfo) { PRTDBGMODCTN pThis = (PRTDBGMODCTN)pMod->pvDbgPriv; /* * Validate the input address. */ AssertMsgReturn(iSeg < pThis->cSegs, ("iSeg=%#x cSegs=%#x\n", iSeg, pThis->cSegs), VERR_DBG_INVALID_SEGMENT_INDEX); AssertMsgReturn(off < pThis->paSegs[iSeg].cb, ("off=%RTptr cbSeg=%RTptr\n", off, pThis->paSegs[iSeg].cb), VERR_DBG_INVALID_SEGMENT_OFFSET); /* * Lookup the nearest line number with an address less or equal to the specified address. */ PAVLUINTPTRNODECORE pAvlCore = RTAvlUIntPtrGetBestFit(&pThis->paSegs[iSeg].LineAddrTree, off, false /*fAbove*/); if (!pAvlCore) return pThis->iNextLineOrdinal ? VERR_DBG_LINE_NOT_FOUND : VERR_DBG_NO_LINE_NUMBERS; PCRTDBGMODCTNLINE pMyLine = RT_FROM_MEMBER(pAvlCore, RTDBGMODCTNLINE const, AddrCore); pLineInfo->Address = pMyLine->AddrCore.Key; pLineInfo->offSeg = pMyLine->AddrCore.Key; pLineInfo->iSeg = iSeg; pLineInfo->uLineNo = pMyLine->uLineNo; pLineInfo->iOrdinal = pMyLine->OrdinalCore.Key; strcpy(pLineInfo->szFilename, pMyLine->pszFile); if (poffDisp) *poffDisp = off - pMyLine->AddrCore.Key; return VINF_SUCCESS; } /** @copydoc RTDBGMODVTDBG::pfnLineByOrdinal */ static DECLCALLBACK(int) rtDbgModContainer_LineByOrdinal(PRTDBGMODINT pMod, uint32_t iOrdinal, PRTDBGLINE pLineInfo) { PRTDBGMODCTN pThis = (PRTDBGMODCTN)pMod->pvDbgPriv; /* * Look it up. */ if (iOrdinal >= pThis->iNextLineOrdinal) return pThis->iNextLineOrdinal ? VERR_DBG_LINE_NOT_FOUND : VERR_DBG_NO_LINE_NUMBERS; PAVLU32NODECORE pAvlCore = RTAvlU32Get(&pThis->LineOrdinalTree, iOrdinal); AssertReturn(pAvlCore, VERR_DBG_LINE_NOT_FOUND); PCRTDBGMODCTNLINE pMyLine = RT_FROM_MEMBER(pAvlCore, RTDBGMODCTNLINE const, OrdinalCore); pLineInfo->Address = pMyLine->AddrCore.Key; pLineInfo->offSeg = pMyLine->AddrCore.Key; pLineInfo->iSeg = pMyLine->iSeg; pLineInfo->uLineNo = pMyLine->uLineNo; pLineInfo->iOrdinal = pMyLine->OrdinalCore.Key; strcpy(pLineInfo->szFilename, pMyLine->pszFile); return VINF_SUCCESS; } /** @copydoc RTDBGMODVTDBG::pfnLineCount */ static DECLCALLBACK(uint32_t) rtDbgModContainer_LineCount(PRTDBGMODINT pMod) { PRTDBGMODCTN pThis = (PRTDBGMODCTN)pMod->pvDbgPriv; /* Note! The ordinal numbers are 0-based. */ return pThis->iNextLineOrdinal; } /** @copydoc RTDBGMODVTDBG::pfnLineAdd */ static DECLCALLBACK(int) rtDbgModContainer_LineAdd(PRTDBGMODINT pMod, const char *pszFile, size_t cchFile, uint32_t uLineNo, uint32_t iSeg, RTUINTPTR off, uint32_t *piOrdinal) { PRTDBGMODCTN pThis = (PRTDBGMODCTN)pMod->pvDbgPriv; /* * Validate the input address. */ AssertMsgReturn(iSeg < pThis->cSegs, ("iSeg=%#x cSegs=%#x\n", iSeg, pThis->cSegs), VERR_DBG_INVALID_SEGMENT_INDEX); AssertMsgReturn(off <= pThis->paSegs[iSeg].cb, ("off=%RTptr cbSeg=%RTptr\n", off, pThis->paSegs[iSeg].cb), VERR_DBG_INVALID_SEGMENT_OFFSET); /* * Create a new entry. */ #ifdef RTDBGMODCNT_WITH_MEM_CACHE PRTDBGMODCTNLINE pLine = (PRTDBGMODCTNLINE)RTMemCacheAlloc(pThis->hLineNumAllocator); #else PRTDBGMODCTNLINE pLine = (PRTDBGMODCTNLINE)RTMemAllocZ(sizeof(*pLine)); #endif if (!pLine) return VERR_NO_MEMORY; pLine->AddrCore.Key = off; pLine->OrdinalCore.Key = pThis->iNextLineOrdinal; pLine->uLineNo = uLineNo; pLine->iSeg = iSeg; pLine->pszFile = RTStrCacheEnterN(g_hDbgModStrCache, pszFile, cchFile); int rc; if (pLine->pszFile) { if (RTAvlUIntPtrInsert(&pThis->paSegs[iSeg].LineAddrTree, &pLine->AddrCore)) { if (RTAvlU32Insert(&pThis->LineOrdinalTree, &pLine->OrdinalCore)) { if (piOrdinal) *piOrdinal = pThis->iNextLineOrdinal; pThis->iNextLineOrdinal++; return VINF_SUCCESS; } rc = VERR_INTERNAL_ERROR_5; RTAvlUIntPtrRemove(&pThis->paSegs[iSeg].LineAddrTree, pLine->AddrCore.Key); } /* bail out */ rc = VERR_DBG_ADDRESS_CONFLICT; RTStrCacheRelease(g_hDbgModStrCache, pLine->pszFile); } else rc = VERR_NO_MEMORY; #ifdef RTDBGMODCNT_WITH_MEM_CACHE RTMemCacheFree(pThis->hLineNumAllocator, pLine); #else RTMemFree(pLine); #endif return rc; } /** @copydoc RTDBGMODVTDBG::pfnSymbolByAddr */ static DECLCALLBACK(int) rtDbgModContainer_SymbolByAddr(PRTDBGMODINT pMod, RTDBGSEGIDX iSeg, RTUINTPTR off, uint32_t fFlags, PRTINTPTR poffDisp, PRTDBGSYMBOL pSymInfo) { PRTDBGMODCTN pThis = (PRTDBGMODCTN)pMod->pvDbgPriv; /* * Validate the input address. */ AssertMsgReturn( iSeg == RTDBGSEGIDX_ABS || iSeg < pThis->cSegs, ("iSeg=%#x cSegs=%#x\n", iSeg, pThis->cSegs), VERR_DBG_INVALID_SEGMENT_INDEX); AssertMsgReturn( iSeg >= RTDBGSEGIDX_SPECIAL_FIRST || off <= pThis->paSegs[iSeg].cb, ("off=%RTptr cbSeg=%RTptr\n", off, pThis->paSegs[iSeg].cb), VERR_DBG_INVALID_SEGMENT_OFFSET); /* * Lookup the nearest symbol with an address less or equal to the specified address. */ PAVLRUINTPTRNODECORE pAvlCore = RTAvlrUIntPtrGetBestFit( iSeg == RTDBGSEGIDX_ABS ? &pThis->AbsAddrTree : &pThis->paSegs[iSeg].SymAddrTree, off, fFlags == RTDBGSYMADDR_FLAGS_GREATER_OR_EQUAL /*fAbove*/); if (!pAvlCore) return VERR_SYMBOL_NOT_FOUND; PCRTDBGMODCTNSYMBOL pMySym = RT_FROM_MEMBER(pAvlCore, RTDBGMODCTNSYMBOL const, AddrCore); if (poffDisp) *poffDisp = off - pMySym->AddrCore.Key; return rtDbgModContainerReturnSymbol(pMySym, pSymInfo); } /** @copydoc RTDBGMODVTDBG::pfnSymbolByName */ static DECLCALLBACK(int) rtDbgModContainer_SymbolByName(PRTDBGMODINT pMod, const char *pszSymbol, size_t cchSymbol, PRTDBGSYMBOL pSymInfo) { PRTDBGMODCTN pThis = (PRTDBGMODCTN)pMod->pvDbgPriv; NOREF(cchSymbol); /* * Look it up in the name space. */ PRTSTRSPACECORE pStrCore = RTStrSpaceGet(&pThis->Names, pszSymbol); if (!pStrCore) return VERR_SYMBOL_NOT_FOUND; PCRTDBGMODCTNSYMBOL pMySym = RT_FROM_MEMBER(pStrCore, RTDBGMODCTNSYMBOL const, NameCore); return rtDbgModContainerReturnSymbol(pMySym, pSymInfo); } /** @copydoc RTDBGMODVTDBG::pfnSymbolByOrdinal */ static DECLCALLBACK(int) rtDbgModContainer_SymbolByOrdinal(PRTDBGMODINT pMod, uint32_t iOrdinal, PRTDBGSYMBOL pSymInfo) { PRTDBGMODCTN pThis = (PRTDBGMODCTN)pMod->pvDbgPriv; /* * Look it up in the ordinal tree. */ if (iOrdinal >= pThis->iNextSymbolOrdinal) return pThis->iNextSymbolOrdinal ? VERR_DBG_NO_SYMBOLS : VERR_SYMBOL_NOT_FOUND; PAVLU32NODECORE pAvlCore = RTAvlU32Get(&pThis->SymbolOrdinalTree, iOrdinal); AssertReturn(pAvlCore, VERR_SYMBOL_NOT_FOUND); PCRTDBGMODCTNSYMBOL pMySym = RT_FROM_MEMBER(pAvlCore, RTDBGMODCTNSYMBOL const, OrdinalCore); return rtDbgModContainerReturnSymbol(pMySym, pSymInfo); } /** @copydoc RTDBGMODVTDBG::pfnSymbolCount */ static DECLCALLBACK(uint32_t) rtDbgModContainer_SymbolCount(PRTDBGMODINT pMod) { PRTDBGMODCTN pThis = (PRTDBGMODCTN)pMod->pvDbgPriv; /* Note! The ordinal numbers are 0-based. */ return pThis->iNextSymbolOrdinal; } /** * Worker for rtDbgModContainer_SymbolAdd that removes a symbol to resolve * address conflicts. * * We don't shift ordinals up as that could be very expensive, instead we move * the last one up to take the place of the one we're removing. Caller must * take this into account. * * @param pThis The container. * @param pAddrTree The address tree to remove from. * @param pToRemove The conflicting symbol to be removed. */ static void rtDbgModContainer_SymbolReplace(PRTDBGMODCTN pThis, PAVLRUINTPTRTREE pAddrTree, PRTDBGMODCTNSYMBOL pToRemove) { Log(("rtDbgModContainer_SymbolReplace: pToRemove=%p ordinal=%u %04x:%08RX64 %s\n", pToRemove, pToRemove->OrdinalCore.Key, pToRemove->iSeg, pToRemove->AddrCore.Key, pToRemove->NameCore.pszString)); /* Unlink it. */ PRTSTRSPACECORE pRemovedName = RTStrSpaceRemove(&pThis->Names, pToRemove->NameCore.pszString); Assert(pRemovedName); RT_NOREF_PV(pRemovedName); pToRemove->NameCore.pszString = NULL; PAVLRUINTPTRNODECORE pRemovedAddr = RTAvlrUIntPtrRemove(pAddrTree, pToRemove->AddrCore.Key); Assert(pRemovedAddr); RT_NOREF_PV(pRemovedAddr); pToRemove->AddrCore.Key = 0; pToRemove->AddrCore.KeyLast = 0; uint32_t const iOrdinal = pToRemove->OrdinalCore.Key; PAVLU32NODECORE pRemovedOrdinal = RTAvlU32Remove(&pThis->SymbolOrdinalTree, iOrdinal); Assert(pRemovedOrdinal); RT_NOREF_PV(pRemovedOrdinal); RTMemFree(pToRemove); /* Jump the last symbol ordinal to take its place, unless pToRemove is the last one. */ if (iOrdinal >= pThis->iNextSymbolOrdinal - 1) pThis->iNextSymbolOrdinal -= 1; else { PAVLU32NODECORE pLastOrdinal = RTAvlU32Remove(&pThis->SymbolOrdinalTree, pThis->iNextSymbolOrdinal - 1); AssertReturnVoid(pLastOrdinal); pThis->iNextSymbolOrdinal -= 1; pLastOrdinal->Key = iOrdinal; bool fInsert = RTAvlU32Insert(&pThis->SymbolOrdinalTree, pLastOrdinal); Assert(fInsert); RT_NOREF_PV(fInsert); } } /** @copydoc RTDBGMODVTDBG::pfnSymbolAdd */ static DECLCALLBACK(int) rtDbgModContainer_SymbolAdd(PRTDBGMODINT pMod, const char *pszSymbol, size_t cchSymbol, RTDBGSEGIDX iSeg, RTUINTPTR off, RTUINTPTR cb, uint32_t fFlags, uint32_t *piOrdinal) { PRTDBGMODCTN pThis = (PRTDBGMODCTN)pMod->pvDbgPriv; /* * Address validation. The other arguments have already been validated. */ AssertMsgReturn( iSeg == RTDBGSEGIDX_ABS || iSeg < pThis->cSegs, ("iSeg=%#x cSegs=%#x\n", iSeg, pThis->cSegs), VERR_DBG_INVALID_SEGMENT_INDEX); AssertMsgReturn( iSeg >= RTDBGSEGIDX_SPECIAL_FIRST || off <= pThis->paSegs[iSeg].cb, ("off=%RTptr cb=%RTptr cbSeg=%RTptr\n", off, cb, pThis->paSegs[iSeg].cb), VERR_DBG_INVALID_SEGMENT_OFFSET); /* Be a little relaxed wrt to the symbol size. */ int rc = VINF_SUCCESS; if (iSeg != RTDBGSEGIDX_ABS && off + cb > pThis->paSegs[iSeg].cb) { cb = pThis->paSegs[iSeg].cb - off; rc = VINF_DBG_ADJUSTED_SYM_SIZE; } /* * Create a new entry. */ PRTDBGMODCTNSYMBOL pSymbol = (PRTDBGMODCTNSYMBOL)RTMemAllocZ(sizeof(*pSymbol)); if (!pSymbol) return VERR_NO_MEMORY; pSymbol->AddrCore.Key = off; pSymbol->AddrCore.KeyLast = off + (cb ? cb - 1 : 0); pSymbol->OrdinalCore.Key = pThis->iNextSymbolOrdinal; pSymbol->iSeg = iSeg; pSymbol->cb = cb; pSymbol->fFlags = fFlags; pSymbol->NameCore.pszString = RTStrCacheEnterN(g_hDbgModStrCache, pszSymbol, cchSymbol); if (pSymbol->NameCore.pszString) { if (RTStrSpaceInsert(&pThis->Names, &pSymbol->NameCore)) { PAVLRUINTPTRTREE pAddrTree = iSeg == RTDBGSEGIDX_ABS ? &pThis->AbsAddrTree : &pThis->paSegs[iSeg].SymAddrTree; if (RTAvlrUIntPtrInsert(pAddrTree, &pSymbol->AddrCore)) { if (RTAvlU32Insert(&pThis->SymbolOrdinalTree, &pSymbol->OrdinalCore)) { /* * Success. */ if (piOrdinal) *piOrdinal = pThis->iNextSymbolOrdinal; Log12(("rtDbgModContainer_SymbolAdd: ordinal=%u %04x:%08RX64 LB %#RX64 %s\n", pThis->iNextSymbolOrdinal, iSeg, off, cb, pSymbol->NameCore.pszString)); pThis->iNextSymbolOrdinal++; return rc; } /* bail out */ rc = VERR_INTERNAL_ERROR_5; RTAvlrUIntPtrRemove(pAddrTree, pSymbol->AddrCore.Key); } /* * Did the caller specify a conflict resolution method? */ else if (fFlags & ( RTDBGSYMBOLADD_F_REPLACE_SAME_ADDR | RTDBGSYMBOLADD_F_REPLACE_ANY | RTDBGSYMBOLADD_F_ADJUST_SIZES_ON_CONFLICT)) { /* * Handle anything at or before the start address first: */ AssertCompileMemberOffset(RTDBGMODCTNSYMBOL, AddrCore, 0); PRTDBGMODCTNSYMBOL pConflict = (PRTDBGMODCTNSYMBOL)RTAvlrUIntPtrRangeGet(pAddrTree, pSymbol->AddrCore.Key); if (pConflict) { if (pConflict->AddrCore.Key == pSymbol->AddrCore.Key) { /* Same address, only option is replacing it. */ if (fFlags & (RTDBGSYMBOLADD_F_REPLACE_SAME_ADDR | RTDBGSYMBOLADD_F_REPLACE_ANY)) rtDbgModContainer_SymbolReplace(pThis, pAddrTree, pConflict); else rc = VERR_DBG_ADDRESS_CONFLICT; } else if (fFlags & RTDBGSYMBOLADD_F_ADJUST_SIZES_ON_CONFLICT) { /* Reduce the size of the symbol before us, adopting the size if we've got none. */ Assert(pConflict->AddrCore.Key < pSymbol->AddrCore.Key); if (!pSymbol->cb) { pSymbol->AddrCore.KeyLast = pSymbol->AddrCore.KeyLast; pSymbol->cb = pSymbol->AddrCore.KeyLast - pConflict->AddrCore.Key + 1; rc = VINF_DBG_ADJUSTED_SYM_SIZE; } pConflict->AddrCore.KeyLast = pSymbol->AddrCore.Key - 1; pConflict->cb = pSymbol->AddrCore.Key - pConflict->AddrCore.Key; } else if (fFlags & RTDBGSYMBOLADD_F_REPLACE_ANY) rtDbgModContainer_SymbolReplace(pThis, pAddrTree, pConflict); else rc = VERR_DBG_ADDRESS_CONFLICT; } /* * Try insert again and deal with symbols in the range. */ while (RT_SUCCESS(rc)) { if (RTAvlrUIntPtrInsert(pAddrTree, &pSymbol->AddrCore)) { pSymbol->OrdinalCore.Key = pThis->iNextSymbolOrdinal; if (RTAvlU32Insert(&pThis->SymbolOrdinalTree, &pSymbol->OrdinalCore)) { /* * Success. */ if (piOrdinal) *piOrdinal = pThis->iNextSymbolOrdinal; pThis->iNextSymbolOrdinal++; Log12(("rtDbgModContainer_SymbolAdd: ordinal=%u %04x:%08RX64 LB %#RX64 %s [replace codepath]\n", pThis->iNextSymbolOrdinal, iSeg, off, cb, pSymbol->NameCore.pszString)); return rc; } rc = VERR_INTERNAL_ERROR_5; RTAvlrUIntPtrRemove(pAddrTree, pSymbol->AddrCore.Key); break; } /* Get the first symbol above us and see if we can do anything about it (or ourselves). */ AssertCompileMemberOffset(RTDBGMODCTNSYMBOL, AddrCore, 0); pConflict = (PRTDBGMODCTNSYMBOL)RTAvlrUIntPtrGetBestFit(pAddrTree, pSymbol->AddrCore.Key, true /*fAbove*/); AssertBreakStmt(pConflict, rc = VERR_DBG_ADDRESS_CONFLICT); Assert(pSymbol->AddrCore.Key != pConflict->AddrCore.Key); Assert(pSymbol->AddrCore.KeyLast >= pConflict->AddrCore.Key); if (fFlags & RTDBGSYMBOLADD_F_ADJUST_SIZES_ON_CONFLICT) { Assert(pSymbol->cb > 0); pSymbol->AddrCore.Key = pConflict->AddrCore.Key - 1; pSymbol->cb = pConflict->AddrCore.Key - pSymbol->AddrCore.Key; rc = VINF_DBG_ADJUSTED_SYM_SIZE; } else if (fFlags & RTDBGSYMBOLADD_F_REPLACE_ANY) rtDbgModContainer_SymbolReplace(pThis, pAddrTree, pConflict); else rc = VERR_DBG_ADDRESS_CONFLICT; } } else rc = VERR_DBG_ADDRESS_CONFLICT; RTStrSpaceRemove(&pThis->Names, pSymbol->NameCore.pszString); } else rc = VERR_DBG_DUPLICATE_SYMBOL; RTStrCacheRelease(g_hDbgModStrCache, pSymbol->NameCore.pszString); } else rc = VERR_NO_MEMORY; RTMemFree(pSymbol); return rc; } /** @copydoc RTDBGMODVTDBG::pfnSegmentByIndex */ static DECLCALLBACK(int) rtDbgModContainer_SegmentByIndex(PRTDBGMODINT pMod, RTDBGSEGIDX iSeg, PRTDBGSEGMENT pSegInfo) { PRTDBGMODCTN pThis = (PRTDBGMODCTN)pMod->pvDbgPriv; if (iSeg >= pThis->cSegs) return VERR_DBG_INVALID_SEGMENT_INDEX; pSegInfo->Address = RTUINTPTR_MAX; pSegInfo->uRva = pThis->paSegs[iSeg].off; pSegInfo->cb = pThis->paSegs[iSeg].cb; pSegInfo->fFlags = pThis->paSegs[iSeg].fFlags; pSegInfo->iSeg = iSeg; strcpy(pSegInfo->szName, pThis->paSegs[iSeg].pszName); return VINF_SUCCESS; } /** @copydoc RTDBGMODVTDBG::pfnSegmentCount */ static DECLCALLBACK(RTDBGSEGIDX) rtDbgModContainer_SegmentCount(PRTDBGMODINT pMod) { PRTDBGMODCTN pThis = (PRTDBGMODCTN)pMod->pvDbgPriv; return pThis->cSegs; } /** @copydoc RTDBGMODVTDBG::pfnSegmentAdd */ static DECLCALLBACK(int) rtDbgModContainer_SegmentAdd(PRTDBGMODINT pMod, RTUINTPTR uRva, RTUINTPTR cb, const char *pszName, size_t cchName, uint32_t fFlags, PRTDBGSEGIDX piSeg) { PRTDBGMODCTN pThis = (PRTDBGMODCTN)pMod->pvDbgPriv; /* * Input validation (the bits the caller cannot do). */ /* Overlapping segments are not yet supported. Will use flags to deal with it if it becomes necessary. */ RTUINTPTR uRvaLast = uRva + RT_MAX(cb, 1) - 1; RTUINTPTR uRvaLastMax = uRvaLast; RTDBGSEGIDX iSeg = pThis->cSegs; while (iSeg-- > 0) { RTUINTPTR uCurRva = pThis->paSegs[iSeg].off; RTUINTPTR uCurRvaLast = uCurRva + RT_MAX(pThis->paSegs[iSeg].cb, 1) - 1; if ( uRva <= uCurRvaLast && uRvaLast >= uCurRva && ( /* HACK ALERT! Allow empty segments to share space (bios/watcom, elf). */ (cb != 0 && pThis->paSegs[iSeg].cb != 0) || ( cb == 0 && uRva != uCurRva && uRva != uCurRvaLast) || ( pThis->paSegs[iSeg].cb == 0 && uCurRva != uRva && uCurRva != uRvaLast) ) ) AssertMsgFailedReturn(("uRva=%RTptr uRvaLast=%RTptr (cb=%RTptr) \"%s\";\n" "uRva=%RTptr uRvaLast=%RTptr (cb=%RTptr) \"%s\" iSeg=%#x\n", uRva, uRvaLast, cb, pszName, uCurRva, uCurRvaLast, pThis->paSegs[iSeg].cb, pThis->paSegs[iSeg].pszName, iSeg), VERR_DBG_SEGMENT_INDEX_CONFLICT); if (uRvaLastMax < uCurRvaLast) uRvaLastMax = uCurRvaLast; } /* Strict ordered segment addition at the moment. */ iSeg = pThis->cSegs; AssertMsgReturn(!piSeg || *piSeg == NIL_RTDBGSEGIDX || *piSeg == iSeg, ("iSeg=%#x *piSeg=%#x\n", iSeg, *piSeg), VERR_DBG_INVALID_SEGMENT_INDEX); /* * Add an entry to the segment table, extending it if necessary. */ if (!(iSeg % 8)) { void *pvSegs = RTMemRealloc(pThis->paSegs, sizeof(RTDBGMODCTNSEGMENT) * (iSeg + 8)); if (!pvSegs) return VERR_NO_MEMORY; pThis->paSegs = (PRTDBGMODCTNSEGMENT)pvSegs; } pThis->paSegs[iSeg].SymAddrTree = NULL; pThis->paSegs[iSeg].LineAddrTree = NULL; pThis->paSegs[iSeg].off = uRva; pThis->paSegs[iSeg].cb = cb; pThis->paSegs[iSeg].fFlags = fFlags; pThis->paSegs[iSeg].pszName = RTStrCacheEnterN(g_hDbgModStrCache, pszName, cchName); if (pThis->paSegs[iSeg].pszName) { if (piSeg) *piSeg = iSeg; pThis->cSegs++; pThis->cb = uRvaLastMax + 1; if (!pThis->cb) pThis->cb = RTUINTPTR_MAX; return VINF_SUCCESS; } return VERR_NO_MEMORY; } /** @copydoc RTDBGMODVTDBG::pfnImageSize */ static DECLCALLBACK(RTUINTPTR) rtDbgModContainer_ImageSize(PRTDBGMODINT pMod) { PRTDBGMODCTN pThis = (PRTDBGMODCTN)pMod->pvDbgPriv; return pThis->cb; } /** @copydoc RTDBGMODVTDBG::pfnRvaToSegOff */ static DECLCALLBACK(RTDBGSEGIDX) rtDbgModContainer_RvaToSegOff(PRTDBGMODINT pMod, RTUINTPTR uRva, PRTUINTPTR poffSeg) { PRTDBGMODCTN pThis = (PRTDBGMODCTN)pMod->pvDbgPriv; PCRTDBGMODCTNSEGMENT paSeg = pThis->paSegs; uint32_t const cSegs = pThis->cSegs; #if 0 if (cSegs <= 7) #endif { /* * Linear search. */ for (uint32_t iSeg = 0; iSeg < cSegs; iSeg++) { RTUINTPTR offSeg = uRva - paSeg[iSeg].off; if (offSeg < paSeg[iSeg].cb) { if (poffSeg) *poffSeg = offSeg; return iSeg; } } } #if 0 /** @todo binary search doesn't work if we've got empty segments in the list */ else { /* * Binary search. */ uint32_t iFirst = 0; uint32_t iLast = cSegs - 1; for (;;) { uint32_t iSeg = iFirst + (iLast - iFirst) / 2; RTUINTPTR offSeg = uRva - paSeg[iSeg].off; if (offSeg < paSeg[iSeg].cb) { #if 0 /* Enable if we change the above test. */ if (offSeg == 0 && paSeg[iSeg].cb == 0) while ( iSeg > 0 && paSeg[iSeg - 1].cb == 0 && paSeg[iSeg - 1].off == uRva) iSeg--; #endif if (poffSeg) *poffSeg = offSeg; return iSeg; } /* advance */ if (uRva < paSeg[iSeg].off) { /* between iFirst and iSeg. */ if (iSeg == iFirst) break; iLast = iSeg - 1; } else { /* between iSeg and iLast. paSeg[iSeg].cb == 0 ends up here too. */ if (iSeg == iLast) break; iFirst = iSeg + 1; } } } #endif /* Invalid. */ return NIL_RTDBGSEGIDX; } /** Destroy a line number node. */ static DECLCALLBACK(int) rtDbgModContainer_DestroyTreeLineNode(PAVLU32NODECORE pNode, void *pvUser) { PRTDBGMODCTN pThis = (PRTDBGMODCTN)pvUser; PRTDBGMODCTNLINE pLine = RT_FROM_MEMBER(pNode, RTDBGMODCTNLINE, OrdinalCore); RTStrCacheRelease(g_hDbgModStrCache, pLine->pszFile); pLine->pszFile = NULL; #ifdef RTDBGMODCNT_WITH_MEM_CACHE RTMemCacheFree(pThis->hLineNumAllocator, pLine); #else RTMemFree(pLine); NOREF(pThis); #endif return 0; } /** Destroy a symbol node. */ static DECLCALLBACK(int) rtDbgModContainer_DestroyTreeNode(PAVLRUINTPTRNODECORE pNode, void *pvUser) { PRTDBGMODCTNSYMBOL pSym = RT_FROM_MEMBER(pNode, RTDBGMODCTNSYMBOL, AddrCore); RTStrCacheRelease(g_hDbgModStrCache, pSym->NameCore.pszString); pSym->NameCore.pszString = NULL; #if 0 //PRTDBGMODCTN pThis = (PRTDBGMODCTN)pvUser; //PAVLU32NODECORE pRemoved = RTAvlU32Remove(&pThis->SymbolOrdinalTree, pSym->OrdinalCore.Key); //Assert(pRemoved == &pSym->OrdinalCore); RT_NOREF_PV(pRemoved); #else RT_NOREF_PV(pvUser); #endif RTMemFree(pSym); return 0; } /** @copydoc RTDBGMODVTDBG::pfnClose */ static DECLCALLBACK(int) rtDbgModContainer_Close(PRTDBGMODINT pMod) { PRTDBGMODCTN pThis = (PRTDBGMODCTN)pMod->pvDbgPriv; /* * Destroy the symbols and instance data. */ for (uint32_t iSeg = 0; iSeg < pThis->cSegs; iSeg++) { RTAvlrUIntPtrDestroy(&pThis->paSegs[iSeg].SymAddrTree, rtDbgModContainer_DestroyTreeNode, pThis); RTStrCacheRelease(g_hDbgModStrCache, pThis->paSegs[iSeg].pszName); pThis->paSegs[iSeg].pszName = NULL; } RTAvlrUIntPtrDestroy(&pThis->AbsAddrTree, rtDbgModContainer_DestroyTreeNode, pThis); pThis->Names = NULL; #ifdef RTDBGMODCNT_WITH_MEM_CACHE RTMemCacheDestroy(pThis->hLineNumAllocator); pThis->hLineNumAllocator = NIL_RTMEMCACHE; #else RTAvlU32Destroy(&pThis->LineOrdinalTree, rtDbgModContainer_DestroyTreeLineNode, pThis); #endif RTMemFree(pThis->paSegs); pThis->paSegs = NULL; RTMemFree(pThis); return VINF_SUCCESS; } /** @copydoc RTDBGMODVTDBG::pfnTryOpen */ static DECLCALLBACK(int) rtDbgModContainer_TryOpen(PRTDBGMODINT pMod, RTLDRARCH enmArch) { NOREF(pMod); NOREF(enmArch); return VERR_INTERNAL_ERROR_5; } /** Virtual function table for the debug info container. */ DECL_HIDDEN_CONST(RTDBGMODVTDBG) const g_rtDbgModVtDbgContainer = { /*.u32Magic = */ RTDBGMODVTDBG_MAGIC, /*.fSupports = */ 0, /* (Don't call my TryOpen, please.) */ /*.pszName = */ "container", /*.pfnTryOpen = */ rtDbgModContainer_TryOpen, /*.pfnClose = */ rtDbgModContainer_Close, /*.pfnRvaToSegOff = */ rtDbgModContainer_RvaToSegOff, /*.pfnImageSize = */ rtDbgModContainer_ImageSize, /*.pfnSegmentAdd = */ rtDbgModContainer_SegmentAdd, /*.pfnSegmentCount = */ rtDbgModContainer_SegmentCount, /*.pfnSegmentByIndex = */ rtDbgModContainer_SegmentByIndex, /*.pfnSymbolAdd = */ rtDbgModContainer_SymbolAdd, /*.pfnSymbolCount = */ rtDbgModContainer_SymbolCount, /*.pfnSymbolByOrdinal = */ rtDbgModContainer_SymbolByOrdinal, /*.pfnSymbolByName = */ rtDbgModContainer_SymbolByName, /*.pfnSymbolByAddr = */ rtDbgModContainer_SymbolByAddr, /*.pfnLineAdd = */ rtDbgModContainer_LineAdd, /*.pfnLineCount = */ rtDbgModContainer_LineCount, /*.pfnLineByOrdinal = */ rtDbgModContainer_LineByOrdinal, /*.pfnLineByAddr = */ rtDbgModContainer_LineByAddr, /*.pfnUnwindFrame = */ rtDbgModContainer_UnwindFrame, /*.u32EndMagic = */ RTDBGMODVTDBG_MAGIC }; /** * Special container operation for removing all symbols. * * @returns IPRT status code. * @param pMod The module instance. */ DECLHIDDEN(int) rtDbgModContainer_SymbolRemoveAll(PRTDBGMODINT pMod) { PRTDBGMODCTN pThis = (PRTDBGMODCTN)pMod->pvDbgPriv; for (uint32_t iSeg = 0; iSeg < pThis->cSegs; iSeg++) { RTAvlrUIntPtrDestroy(&pThis->paSegs[iSeg].SymAddrTree, rtDbgModContainer_DestroyTreeNode, NULL); Assert(pThis->paSegs[iSeg].SymAddrTree == NULL); } RTAvlrUIntPtrDestroy(&pThis->AbsAddrTree, rtDbgModContainer_DestroyTreeNode, NULL); Assert(pThis->AbsAddrTree == NULL); pThis->Names = NULL; pThis->iNextSymbolOrdinal = 0; return VINF_SUCCESS; } /** * Special container operation for removing all line numbers. * * @returns IPRT status code. * @param pMod The module instance. */ DECLHIDDEN(int) rtDbgModContainer_LineRemoveAll(PRTDBGMODINT pMod) { PRTDBGMODCTN pThis = (PRTDBGMODCTN)pMod->pvDbgPriv; for (uint32_t iSeg = 0; iSeg < pThis->cSegs; iSeg++) pThis->paSegs[iSeg].LineAddrTree = NULL; RTAvlU32Destroy(&pThis->LineOrdinalTree, rtDbgModContainer_DestroyTreeLineNode, pThis); Assert(pThis->LineOrdinalTree == NULL); pThis->iNextLineOrdinal = 0; return VINF_SUCCESS; } /** * Special container operation for removing everything. * * @returns IPRT status code. * @param pMod The module instance. */ DECLHIDDEN(int) rtDbgModContainer_RemoveAll(PRTDBGMODINT pMod) { PRTDBGMODCTN pThis = (PRTDBGMODCTN)pMod->pvDbgPriv; rtDbgModContainer_LineRemoveAll(pMod); rtDbgModContainer_SymbolRemoveAll(pMod); for (uint32_t iSeg = 0; iSeg < pThis->cSegs; iSeg++) { RTStrCacheRelease(g_hDbgModStrCache, pThis->paSegs[iSeg].pszName); pThis->paSegs[iSeg].pszName = NULL; } pThis->cSegs = 0; pThis->cb = 0; return VINF_SUCCESS; } /** * Creates a generic debug info container and associates it with the module. * * @returns IPRT status code. * @param pMod The module instance. * @param cbSeg The size of the initial segment. 0 if segments are to be * created manually later on. */ int rtDbgModContainerCreate(PRTDBGMODINT pMod, RTUINTPTR cbSeg) { PRTDBGMODCTN pThis = (PRTDBGMODCTN)RTMemAlloc(sizeof(*pThis)); if (!pThis) return VERR_NO_MEMORY; pThis->Names = NULL; pThis->AbsAddrTree = NULL; pThis->SymbolOrdinalTree = NULL; pThis->LineOrdinalTree = NULL; pThis->paSegs = NULL; pThis->cSegs = 0; pThis->cb = 0; pThis->iNextSymbolOrdinal = 0; pThis->iNextLineOrdinal = 0; pMod->pDbgVt = &g_rtDbgModVtDbgContainer; pMod->pvDbgPriv = pThis; #ifdef RTDBGMODCNT_WITH_MEM_CACHE int rc = RTMemCacheCreate(&pThis->hLineNumAllocator, sizeof(RTDBGMODCTNLINE), sizeof(void *), UINT32_MAX, NULL /*pfnCtor*/, NULL /*pfnDtor*/, NULL /*pvUser*/, 0 /*fFlags*/); #else int rc = VINF_SUCCESS; #endif if (RT_SUCCESS(rc)) { /* * Add the initial segment. */ if (cbSeg) rc = rtDbgModContainer_SegmentAdd(pMod, 0, cbSeg, "default", sizeof("default") - 1, 0, NULL); if (RT_SUCCESS(rc)) return rc; #ifdef RTDBGMODCNT_WITH_MEM_CACHE RTMemCacheDestroy(pThis->hLineNumAllocator); #endif } RTMemFree(pThis); pMod->pDbgVt = NULL; pMod->pvDbgPriv = NULL; return rc; }