| 1 | //===- InjectedSourceStream.cpp - PDB Headerblock Stream Access -----------===// |
|---|---|
| 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-exception |
| 6 | // |
| 7 | //===----------------------------------------------------------------------===// |
| 8 | |
| 9 | #include "llvm/DebugInfo/PDB/Native/InjectedSourceStream.h" |
| 10 | |
| 11 | #include "llvm/DebugInfo/MSF/MappedBlockStream.h" |
| 12 | #include "llvm/DebugInfo/PDB/Native/HashTable.h" |
| 13 | #include "llvm/DebugInfo/PDB/Native/PDBStringTable.h" |
| 14 | #include "llvm/DebugInfo/PDB/Native/RawConstants.h" |
| 15 | #include "llvm/DebugInfo/PDB/Native/RawTypes.h" |
| 16 | #include "llvm/Support/BinaryStreamReader.h" |
| 17 | |
| 18 | using namespace llvm; |
| 19 | using namespace llvm::msf; |
| 20 | using namespace llvm::support; |
| 21 | using namespace llvm::pdb; |
| 22 | |
| 23 | InjectedSourceStream::InjectedSourceStream( |
| 24 | std::unique_ptr<MappedBlockStream> Stream) |
| 25 | : Stream(std::move(Stream)) {} |
| 26 | |
| 27 | Error InjectedSourceStream::reload(const PDBStringTable &Strings) { |
| 28 | BinaryStreamReader Reader(*Stream); |
| 29 | |
| 30 | if (auto EC = Reader.readObject(Dest&: Header)) |
| 31 | return EC; |
| 32 | |
| 33 | if (Header->Version != |
| 34 | static_cast<uint32_t>(PdbRaw_SrcHeaderBlockVer::SrcVerOne)) |
| 35 | return make_error<RawError>(Args: raw_error_code::corrupt_file, |
| 36 | Args: "Invalid headerblock header version"); |
| 37 | |
| 38 | if (auto EC = InjectedSourceTable.load(Stream&: Reader)) |
| 39 | return EC; |
| 40 | |
| 41 | for (const auto& Entry : *this) { |
| 42 | if (Entry.second.Size != sizeof(SrcHeaderBlockEntry)) |
| 43 | return make_error<RawError>(Args: raw_error_code::corrupt_file, |
| 44 | Args: "Invalid headerbock entry size"); |
| 45 | if (Entry.second.Version != |
| 46 | static_cast<uint32_t>(PdbRaw_SrcHeaderBlockVer::SrcVerOne)) |
| 47 | return make_error<RawError>(Args: raw_error_code::corrupt_file, |
| 48 | Args: "Invalid headerbock entry version"); |
| 49 | |
| 50 | // Check that all name references are valid. |
| 51 | auto Name = Strings.getStringForID(ID: Entry.second.FileNI); |
| 52 | if (!Name) |
| 53 | return Name.takeError(); |
| 54 | auto ObjName = Strings.getStringForID(ID: Entry.second.ObjNI); |
| 55 | if (!ObjName) |
| 56 | return ObjName.takeError(); |
| 57 | auto VName = Strings.getStringForID(ID: Entry.second.VFileNI); |
| 58 | if (!VName) |
| 59 | return VName.takeError(); |
| 60 | } |
| 61 | |
| 62 | assert(Reader.bytesRemaining() == 0); |
| 63 | return Error::success(); |
| 64 | } |
| 65 |