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1 //===- PDBSymbolData.cpp - PDB data (e.g. variable) accessors ---*- C++ -*-===//
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2 //
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3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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4 // See https://llvm.org/LICENSE.txt for license information.
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5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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6 //
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7 //===----------------------------------------------------------------------===//
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8
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9 #include "llvm/DebugInfo/PDB/PDBSymbolData.h"
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10 #include "llvm/DebugInfo/PDB/IPDBSectionContrib.h"
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11 #include "llvm/DebugInfo/PDB/IPDBSession.h"
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12 #include "llvm/DebugInfo/PDB/PDBSymDumper.h"
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13
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14 #include <utility>
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15
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16 using namespace llvm;
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17 using namespace llvm::pdb;
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18
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19 void PDBSymbolData::dump(PDBSymDumper &Dumper) const { Dumper.dump(*this); }
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20
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21 std::unique_ptr<IPDBEnumLineNumbers> PDBSymbolData::getLineNumbers() const {
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22 auto Len = RawSymbol->getLength();
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23 Len = Len ? Len : 1;
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24 if (auto RVA = RawSymbol->getRelativeVirtualAddress())
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25 return Session.findLineNumbersByRVA(RVA, Len);
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26
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27 if (auto Section = RawSymbol->getAddressSection())
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28 return Session.findLineNumbersBySectOffset(
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29 Section, RawSymbol->getAddressOffset(), Len);
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30
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31 return nullptr;
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32 }
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33
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34 uint32_t PDBSymbolData::getCompilandId() const {
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35 if (auto Lines = getLineNumbers()) {
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36 if (auto FirstLine = Lines->getNext())
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37 return FirstLine->getCompilandId();
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38 }
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39
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40 uint32_t DataSection = RawSymbol->getAddressSection();
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41 uint32_t DataOffset = RawSymbol->getAddressOffset();
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42 if (DataSection == 0) {
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43 if (auto RVA = RawSymbol->getRelativeVirtualAddress())
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44 Session.addressForRVA(RVA, DataSection, DataOffset);
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45 }
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46
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47 if (DataSection) {
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48 if (auto SecContribs = Session.getSectionContribs()) {
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49 while (auto Section = SecContribs->getNext()) {
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50 if (Section->getAddressSection() == DataSection &&
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51 Section->getAddressOffset() <= DataOffset &&
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52 (Section->getAddressOffset() + Section->getLength()) > DataOffset)
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53 return Section->getCompilandId();
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54 }
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55 }
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56 } else {
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57 auto LexParentId = RawSymbol->getLexicalParentId();
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58 while (auto LexParent = Session.getSymbolById(LexParentId)) {
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59 if (LexParent->getSymTag() == PDB_SymType::Exe)
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60 break;
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61 if (LexParent->getSymTag() == PDB_SymType::Compiland)
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62 return LexParentId;
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63 LexParentId = LexParent->getRawSymbol().getLexicalParentId();
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64 }
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65 }
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66
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67 return 0;
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68 }
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