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
18using namespace llvm;
19using namespace llvm::msf;
20using namespace llvm::support;
21using namespace llvm::pdb;
22
23InjectedSourceStream::InjectedSourceStream(
24 std::unique_ptr<MappedBlockStream> Stream)
25 : Stream(std::move(Stream)) {}
26
27Error 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