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1 //===- InjectedSourceStream.cpp - PDB Headerblock Stream Access -----------===//
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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/Native/InjectedSourceStream.h"
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10
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11 #include "llvm/DebugInfo/MSF/MappedBlockStream.h"
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12 #include "llvm/DebugInfo/PDB/Native/Hash.h"
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13 #include "llvm/DebugInfo/PDB/Native/PDBStringTable.h"
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14 #include "llvm/DebugInfo/PDB/Native/RawConstants.h"
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15 #include "llvm/DebugInfo/PDB/Native/RawTypes.h"
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16 #include "llvm/Support/BinaryStreamReader.h"
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17 #include "llvm/Support/Endian.h"
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18
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19 using namespace llvm;
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20 using namespace llvm::msf;
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21 using namespace llvm::support;
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22 using namespace llvm::pdb;
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23
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24 InjectedSourceStream::InjectedSourceStream(
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25 std::unique_ptr<MappedBlockStream> Stream)
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26 : Stream(std::move(Stream)) {}
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27
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28 Error InjectedSourceStream::reload(const PDBStringTable &Strings) {
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29 BinaryStreamReader Reader(*Stream);
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30
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31 if (auto EC = Reader.readObject(Header))
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32 return EC;
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33
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34 if (Header->Version !=
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35 static_cast<uint32_t>(PdbRaw_SrcHeaderBlockVer::SrcVerOne))
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36 return make_error<RawError>(raw_error_code::corrupt_file,
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37 "Invalid headerblock header version");
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38
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39 if (auto EC = InjectedSourceTable.load(Reader))
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40 return EC;
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41
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42 for (const auto& Entry : *this) {
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43 if (Entry.second.Size != sizeof(SrcHeaderBlockEntry))
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44 return make_error<RawError>(raw_error_code::corrupt_file,
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45 "Invalid headerbock entry size");
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46 if (Entry.second.Version !=
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47 static_cast<uint32_t>(PdbRaw_SrcHeaderBlockVer::SrcVerOne))
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48 return make_error<RawError>(raw_error_code::corrupt_file,
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49 "Invalid headerbock entry version");
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50
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51 // Check that all name references are valid.
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52 auto Name = Strings.getStringForID(Entry.second.FileNI);
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53 if (!Name)
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54 return Name.takeError();
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55 auto ObjName = Strings.getStringForID(Entry.second.ObjNI);
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56 if (!ObjName)
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57 return ObjName.takeError();
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58 auto VName = Strings.getStringForID(Entry.second.VFileNI);
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59 if (!VName)
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60 return VName.takeError();
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61 }
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62
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63 assert(Reader.bytesRemaining() == 0);
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64 return Error::success();
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65 }
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