blob: 9a21bbc4916d810877f6735875be76592a2a173f (
plain) (
blame)
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
153
154
155
156
157
158
159
|
#pragma once
#ifdef __GNUC__
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wunused-parameter"
#endif
//===- GSIStreamBuilder.h - PDB Publics/Globals Stream Creation -*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_DEBUGINFO_PDB_NATIVE_GSISTREAMBUILDER_H
#define LLVM_DEBUGINFO_PDB_NATIVE_GSISTREAMBUILDER_H
#include "llvm/ADT/DenseSet.h"
#include "llvm/DebugInfo/CodeView/SymbolRecord.h"
#include "llvm/DebugInfo/PDB/Native/GlobalsStream.h"
#include "llvm/DebugInfo/PDB/Native/RawConstants.h"
#include "llvm/DebugInfo/PDB/Native/RawTypes.h"
#include "llvm/Support/BinaryByteStream.h"
#include "llvm/Support/BinaryItemStream.h"
#include "llvm/Support/BinaryStreamRef.h"
#include "llvm/Support/BinaryStreamWriter.h"
#include "llvm/Support/Endian.h"
#include "llvm/Support/Error.h"
namespace llvm {
template <> struct BinaryItemTraits<codeview::CVSymbol> {
static size_t length(const codeview::CVSymbol &Item) {
return Item.RecordData.size();
}
static ArrayRef<uint8_t> bytes(const codeview::CVSymbol &Item) {
return Item.RecordData;
}
};
namespace msf {
class MSFBuilder;
struct MSFLayout;
} // namespace msf
namespace pdb {
struct GSIHashStreamBuilder;
struct BulkPublic;
struct SymbolDenseMapInfo;
class GSIStreamBuilder {
public:
explicit GSIStreamBuilder(msf::MSFBuilder &Msf);
~GSIStreamBuilder();
GSIStreamBuilder(const GSIStreamBuilder &) = delete;
GSIStreamBuilder &operator=(const GSIStreamBuilder &) = delete;
Error finalizeMsfLayout();
Error commit(const msf::MSFLayout &Layout, WritableBinaryStreamRef Buffer);
uint32_t getPublicsStreamIndex() const { return PublicsStreamIndex; }
uint32_t getGlobalsStreamIndex() const { return GlobalsStreamIndex; }
uint32_t getRecordStreamIndex() const { return RecordStreamIndex; }
// Add public symbols in bulk.
void addPublicSymbols(std::vector<BulkPublic> &&PublicsIn);
void addGlobalSymbol(const codeview::ProcRefSym &Sym);
void addGlobalSymbol(const codeview::DataSym &Sym);
void addGlobalSymbol(const codeview::ConstantSym &Sym);
// Add a pre-serialized global symbol record. The caller must ensure that the
// symbol data remains alive until the global stream is committed to disk.
void addGlobalSymbol(const codeview::CVSymbol &Sym);
private:
void finalizePublicBuckets();
void finalizeGlobalBuckets(uint32_t RecordZeroOffset);
template <typename T> void serializeAndAddGlobal(const T &Symbol);
uint32_t calculatePublicsHashStreamSize() const;
uint32_t calculateGlobalsHashStreamSize() const;
Error commitSymbolRecordStream(WritableBinaryStreamRef Stream);
Error commitPublicsHashStream(WritableBinaryStreamRef Stream);
Error commitGlobalsHashStream(WritableBinaryStreamRef Stream);
uint32_t PublicsStreamIndex = kInvalidStreamIndex;
uint32_t GlobalsStreamIndex = kInvalidStreamIndex;
uint32_t RecordStreamIndex = kInvalidStreamIndex;
msf::MSFBuilder &Msf;
std::unique_ptr<GSIHashStreamBuilder> PSH;
std::unique_ptr<GSIHashStreamBuilder> GSH;
// List of all of the public records. These are stored unserialized so that we
// can defer copying the names until we are ready to commit the PDB.
std::vector<BulkPublic> Publics;
// List of all of the global records.
std::vector<codeview::CVSymbol> Globals;
// Hash table for deduplicating global typedef and constant records. Only used
// for globals.
llvm::DenseSet<codeview::CVSymbol, SymbolDenseMapInfo> GlobalsSeen;
};
/// This struct is equivalent to codeview::PublicSym32, but it has been
/// optimized for size to speed up bulk serialization and sorting operations
/// during PDB writing.
struct BulkPublic {
BulkPublic() : Flags(0), BucketIdx(0) {}
const char *Name = nullptr;
uint32_t NameLen = 0;
// Offset of the symbol record in the publics stream.
uint32_t SymOffset = 0;
// Section offset of the symbol in the image.
uint32_t Offset = 0;
// Section index of the section containing the symbol.
uint16_t Segment = 0;
// PublicSymFlags.
uint16_t Flags : 4;
// GSI hash table bucket index. The maximum value is IPHR_HASH.
uint16_t BucketIdx : 12;
static_assert(IPHR_HASH <= 1 << 12, "bitfield too small");
void setFlags(codeview::PublicSymFlags F) {
Flags = uint32_t(F);
assert(Flags == uint32_t(F) && "truncated");
}
void setBucketIdx(uint16_t B) {
assert(B < IPHR_HASH);
BucketIdx = B;
}
StringRef getName() const { return StringRef(Name, NameLen); }
};
static_assert(sizeof(BulkPublic) <= 24, "unexpected size increase");
static_assert(std::is_trivially_copyable<BulkPublic>::value,
"should be trivial");
} // namespace pdb
} // namespace llvm
#endif
#ifdef __GNUC__
#pragma GCC diagnostic pop
#endif
|
