1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
|
//===- TpiStream.cpp - PDB Type Info (TPI) Stream 2 Access ----------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "llvm/DebugInfo/PDB/Native/TpiStream.h"
#include "llvm/ADT/iterator_range.h"
#include "llvm/DebugInfo/CodeView/LazyRandomTypeCollection.h"
#include "llvm/DebugInfo/CodeView/TypeRecord.h"
#include "llvm/DebugInfo/MSF/MappedBlockStream.h"
#include "llvm/DebugInfo/PDB/Native/PDBFile.h"
#include "llvm/DebugInfo/PDB/Native/PDBTypeServerHandler.h"
#include "llvm/DebugInfo/PDB/Native/RawConstants.h"
#include "llvm/DebugInfo/PDB/Native/RawError.h"
#include "llvm/DebugInfo/PDB/Native/RawTypes.h"
#include "llvm/DebugInfo/PDB/Native/TpiHashing.h"
#include "llvm/Support/BinaryStreamReader.h"
#include "llvm/Support/Endian.h"
#include "llvm/Support/Error.h"
#include <algorithm>
#include <cstdint>
#include <vector>
using namespace llvm;
using namespace llvm::codeview;
using namespace llvm::support;
using namespace llvm::msf;
using namespace llvm::pdb;
TpiStream::TpiStream(const PDBFile &File,
std::unique_ptr<MappedBlockStream> Stream)
: Pdb(File), Stream(std::move(Stream)) {}
TpiStream::~TpiStream() = default;
Error TpiStream::reload() {
BinaryStreamReader Reader(*Stream);
if (Reader.bytesRemaining() < sizeof(TpiStreamHeader))
return make_error<RawError>(raw_error_code::corrupt_file,
"TPI Stream does not contain a header.");
if (Reader.readObject(Header))
return make_error<RawError>(raw_error_code::corrupt_file,
"TPI Stream does not contain a header.");
if (Header->Version != PdbTpiV80)
return make_error<RawError>(raw_error_code::corrupt_file,
"Unsupported TPI Version.");
if (Header->HeaderSize != sizeof(TpiStreamHeader))
return make_error<RawError>(raw_error_code::corrupt_file,
"Corrupt TPI Header size.");
if (Header->HashKeySize != sizeof(ulittle32_t))
return make_error<RawError>(raw_error_code::corrupt_file,
"TPI Stream expected 4 byte hash key size.");
if (Header->NumHashBuckets < MinTpiHashBuckets ||
Header->NumHashBuckets > MaxTpiHashBuckets)
return make_error<RawError>(raw_error_code::corrupt_file,
"TPI Stream Invalid number of hash buckets.");
// The actual type records themselves come from this stream
if (auto EC = Reader.readArray(TypeRecords, Header->TypeRecordBytes))
return EC;
// Hash indices, hash values, etc come from the hash stream.
if (Header->HashStreamIndex != kInvalidStreamIndex) {
if (Header->HashStreamIndex >= Pdb.getNumStreams())
return make_error<RawError>(raw_error_code::corrupt_file,
"Invalid TPI hash stream index.");
auto HS = MappedBlockStream::createIndexedStream(
Pdb.getMsfLayout(), Pdb.getMsfBuffer(), Header->HashStreamIndex);
BinaryStreamReader HSR(*HS);
// There should be a hash value for every type record, or no hashes at all.
uint32_t NumHashValues =
Header->HashValueBuffer.Length / sizeof(ulittle32_t);
if (NumHashValues != getNumTypeRecords() && NumHashValues != 0)
return make_error<RawError>(
raw_error_code::corrupt_file,
"TPI hash count does not match with the number of type records.");
HSR.setOffset(Header->HashValueBuffer.Off);
if (auto EC = HSR.readArray(HashValues, NumHashValues))
return EC;
HSR.setOffset(Header->IndexOffsetBuffer.Off);
uint32_t NumTypeIndexOffsets =
Header->IndexOffsetBuffer.Length / sizeof(TypeIndexOffset);
if (auto EC = HSR.readArray(TypeIndexOffsets, NumTypeIndexOffsets))
return EC;
if (Header->HashAdjBuffer.Length > 0) {
HSR.setOffset(Header->HashAdjBuffer.Off);
if (auto EC = HashAdjusters.load(HSR))
return EC;
}
HashStream = std::move(HS);
}
Types = llvm::make_unique<LazyRandomTypeCollection>(
TypeRecords, getNumTypeRecords(), getTypeIndexOffsets());
return Error::success();
}
PdbRaw_TpiVer TpiStream::getTpiVersion() const {
uint32_t Value = Header->Version;
return static_cast<PdbRaw_TpiVer>(Value);
}
uint32_t TpiStream::TypeIndexBegin() const { return Header->TypeIndexBegin; }
uint32_t TpiStream::TypeIndexEnd() const { return Header->TypeIndexEnd; }
uint32_t TpiStream::getNumTypeRecords() const {
return TypeIndexEnd() - TypeIndexBegin();
}
uint16_t TpiStream::getTypeHashStreamIndex() const {
return Header->HashStreamIndex;
}
uint16_t TpiStream::getTypeHashStreamAuxIndex() const {
return Header->HashAuxStreamIndex;
}
uint32_t TpiStream::getNumHashBuckets() const { return Header->NumHashBuckets; }
uint32_t TpiStream::getHashKeySize() const { return Header->HashKeySize; }
FixedStreamArray<support::ulittle32_t> TpiStream::getHashValues() const {
return HashValues;
}
FixedStreamArray<TypeIndexOffset> TpiStream::getTypeIndexOffsets() const {
return TypeIndexOffsets;
}
HashTable &TpiStream::getHashAdjusters() { return HashAdjusters; }
CVTypeRange TpiStream::types(bool *HadError) const {
return make_range(TypeRecords.begin(HadError), TypeRecords.end());
}
Error TpiStream::commit() { return Error::success(); }
|
