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Zachary Turner2f09b502016-04-29 17:28:47 +00001//===- InfoStream.cpp - PDB Info Stream (Stream 1) Access -------*- C++ -*-===//
Zachary Turnerf34e0162016-04-26 16:20:00 +00002//
3// The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9
Zachary Turner2f09b502016-04-29 17:28:47 +000010#include "llvm/DebugInfo/PDB/Raw/InfoStream.h"
Zachary Turnerf34e0162016-04-26 16:20:00 +000011#include "llvm/ADT/BitVector.h"
12#include "llvm/ADT/SmallVector.h"
Zachary Turnerd5d37dc2016-05-25 20:37:03 +000013#include "llvm/DebugInfo/CodeView/StreamReader.h"
Zachary Turnerb56d9042016-05-02 18:09:21 +000014#include "llvm/DebugInfo/PDB/Raw/RawConstants.h"
Zachary Turner819e77d2016-05-06 20:51:57 +000015#include "llvm/DebugInfo/PDB/Raw/RawError.h"
Zachary Turnerf34e0162016-04-26 16:20:00 +000016
17using namespace llvm;
Zachary Turner2f09b502016-04-29 17:28:47 +000018using namespace llvm::pdb;
Zachary Turnerf34e0162016-04-26 16:20:00 +000019
Zachary Turnerb56d9042016-05-02 18:09:21 +000020InfoStream::InfoStream(PDBFile &File) : Pdb(File), Stream(StreamPDB, File) {}
Zachary Turnerf34e0162016-04-26 16:20:00 +000021
Zachary Turner819e77d2016-05-06 20:51:57 +000022Error InfoStream::reload() {
Zachary Turnerd5d37dc2016-05-25 20:37:03 +000023 codeview::StreamReader Reader(Stream);
Zachary Turner6ba65de2016-04-29 17:22:58 +000024
Zachary Turnerb56d9042016-05-02 18:09:21 +000025 struct Header {
26 support::ulittle32_t Version;
27 support::ulittle32_t Signature;
28 support::ulittle32_t Age;
29 PDB_UniqueId Guid;
30 };
Zachary Turnerf34e0162016-04-26 16:20:00 +000031
Zachary Turner8dbe3622016-05-27 01:54:44 +000032 const Header *H;
33 if (auto EC = Reader.readObject(H))
David Majnemer74b1fb02016-05-27 22:07:50 +000034 return joinErrors(
35 std::move(EC),
36 make_error<RawError>(raw_error_code::corrupt_file,
37 "PDB Stream does not contain a header."));
Zachary Turnerb56d9042016-05-02 18:09:21 +000038
Zachary Turner8dbe3622016-05-27 01:54:44 +000039 if (H->Version < PdbRaw_ImplVer::PdbImplVC70)
Zachary Turner819e77d2016-05-06 20:51:57 +000040 return make_error<RawError>(raw_error_code::corrupt_file,
41 "Unsupported PDB stream version.");
Zachary Turnerf34e0162016-04-26 16:20:00 +000042
Zachary Turner8dbe3622016-05-27 01:54:44 +000043 Version = H->Version;
44 Signature = H->Signature;
45 Age = H->Age;
46 Guid = H->Guid;
Zachary Turnerf34e0162016-04-26 16:20:00 +000047
Zachary Turner819e77d2016-05-06 20:51:57 +000048 return NamedStreams.load(Reader);
Zachary Turnerf34e0162016-04-26 16:20:00 +000049}
50
Zachary Turner2f09b502016-04-29 17:28:47 +000051uint32_t InfoStream::getNamedStreamIndex(llvm::StringRef Name) const {
Zachary Turnerf34e0162016-04-26 16:20:00 +000052 uint32_t Result;
53 if (!NamedStreams.tryGetValue(Name, Result))
54 return 0;
55 return Result;
56}
57
Zachary Turner85ed80b2016-05-25 03:43:17 +000058iterator_range<StringMapConstIterator<uint32_t>>
59InfoStream::named_streams() const {
60 return NamedStreams.entries();
61}
62
Zachary Turner2f09b502016-04-29 17:28:47 +000063PdbRaw_ImplVer InfoStream::getVersion() const {
Zachary Turnerf34e0162016-04-26 16:20:00 +000064 return static_cast<PdbRaw_ImplVer>(Version);
65}
66
Zachary Turner2f09b502016-04-29 17:28:47 +000067uint32_t InfoStream::getSignature() const { return Signature; }
Zachary Turnerf34e0162016-04-26 16:20:00 +000068
Zachary Turner2f09b502016-04-29 17:28:47 +000069uint32_t InfoStream::getAge() const { return Age; }
Zachary Turnerf34e0162016-04-26 16:20:00 +000070
Zachary Turner2f09b502016-04-29 17:28:47 +000071PDB_UniqueId InfoStream::getGuid() const { return Guid; }