68 lines · cpp
1//===- PDBSymbolData.cpp - PDB data (e.g. variable) accessors ---*- C++ -*-===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8 9#include "llvm/DebugInfo/PDB/PDBSymbolData.h"10#include "llvm/DebugInfo/PDB/IPDBLineNumber.h"11#include "llvm/DebugInfo/PDB/IPDBSectionContrib.h"12#include "llvm/DebugInfo/PDB/IPDBSession.h"13#include "llvm/DebugInfo/PDB/PDBSymDumper.h"14 15using namespace llvm;16using namespace llvm::pdb;17 18void PDBSymbolData::dump(PDBSymDumper &Dumper) const { Dumper.dump(*this); }19 20std::unique_ptr<IPDBEnumLineNumbers> PDBSymbolData::getLineNumbers() const {21 auto Len = RawSymbol->getLength();22 Len = Len ? Len : 1;23 if (auto RVA = RawSymbol->getRelativeVirtualAddress())24 return Session.findLineNumbersByRVA(RVA, Len);25 26 if (auto Section = RawSymbol->getAddressSection())27 return Session.findLineNumbersBySectOffset(28 Section, RawSymbol->getAddressOffset(), Len);29 30 return nullptr;31}32 33uint32_t PDBSymbolData::getCompilandId() const {34 if (auto Lines = getLineNumbers()) {35 if (auto FirstLine = Lines->getNext())36 return FirstLine->getCompilandId();37 }38 39 uint32_t DataSection = RawSymbol->getAddressSection();40 uint32_t DataOffset = RawSymbol->getAddressOffset();41 if (DataSection == 0) {42 if (auto RVA = RawSymbol->getRelativeVirtualAddress())43 Session.addressForRVA(RVA, DataSection, DataOffset);44 }45 46 if (DataSection) {47 if (auto SecContribs = Session.getSectionContribs()) {48 while (auto Section = SecContribs->getNext()) {49 if (Section->getAddressSection() == DataSection &&50 Section->getAddressOffset() <= DataOffset &&51 (Section->getAddressOffset() + Section->getLength()) > DataOffset)52 return Section->getCompilandId();53 }54 }55 } else {56 auto LexParentId = RawSymbol->getLexicalParentId();57 while (auto LexParent = Session.getSymbolById(LexParentId)) {58 if (LexParent->getSymTag() == PDB_SymType::Exe)59 break;60 if (LexParent->getSymTag() == PDB_SymType::Compiland)61 return LexParentId;62 LexParentId = LexParent->getRawSymbol().getLexicalParentId();63 }64 }65 66 return 0;67}68