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
|
//===- DWARFLinkerCompileUnit.h ---------------------------------*- 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_LIB_DWARFLINKERPARALLEL_DWARFLINKERCOMPILEUNIT_H
#define LLVM_LIB_DWARFLINKERPARALLEL_DWARFLINKERCOMPILEUNIT_H
#include "DWARFLinkerUnit.h"
#include "llvm/DWARFLinkerParallel/DWARFFile.h"
#include "llvm/DWARFLinkerParallel/DWARFLinker.h"
#include <optional>
namespace llvm {
namespace dwarflinker_parallel {
struct LinkContext;
class DWARFFile;
/// Stores all information related to a compile unit, be it in its original
/// instance of the object file or its brand new cloned and generated DIE tree.
class CompileUnit : public DwarfUnit {
public:
CompileUnit(LinkContext &, unsigned ID, StringRef ClangModuleName,
DWARFFile &File,
DWARFLinker::SwiftInterfacesMapTy *,
UnitMessageHandlerTy WarningHandler)
: DwarfUnit(ID, ClangModuleName, WarningHandler), ContaingFile(File) {
FormParams.Version = 4;
FormParams.Format = dwarf::DWARF32;
FormParams.AddrSize = 4;
UnitName = ContaingFile.FileName;
}
CompileUnit(LinkContext &, DWARFUnit &OrigUnit, unsigned ID,
StringRef ClangModuleName, DWARFFile &File,
UnitMessageHandlerTy WarningHandler)
: DwarfUnit(ID, ClangModuleName, WarningHandler),
ContaingFile(File), OrigUnit(&OrigUnit) {
DWARFDie CUDie = OrigUnit.getUnitDIE();
if (!CUDie)
return;
if (File.Dwarf)
Endianess = File.Dwarf->isLittleEndian() ? support::endianness::little
: support::endianness::big;
FormParams.Version = OrigUnit.getVersion();
FormParams.Format = dwarf::DWARF32;
FormParams.AddrSize = OrigUnit.getAddressByteSize();
Language = dwarf::toUnsigned(CUDie.find(dwarf::DW_AT_language), 0);
UnitName = ContaingFile.FileName;
SysRoot = dwarf::toStringRef(CUDie.find(dwarf::DW_AT_LLVM_sysroot)).str();
}
/// \defgroup Helper methods to access OrigUnit.
///
/// @{
/// Returns paired compile unit from input DWARF.
DWARFUnit &getOrigUnit() const {
assert(OrigUnit != nullptr);
return *OrigUnit;
}
const DWARFDebugInfoEntry *
getFirstChildEntry(const DWARFDebugInfoEntry *Die) const {
assert(OrigUnit != nullptr);
return OrigUnit->getFirstChildEntry(Die);
}
const DWARFDebugInfoEntry *
getSiblingEntry(const DWARFDebugInfoEntry *Die) const {
assert(OrigUnit != nullptr);
return OrigUnit->getSiblingEntry(Die);
}
DWARFDie getParent(const DWARFDebugInfoEntry *Die) {
assert(OrigUnit != nullptr);
return OrigUnit->getParent(Die);
}
DWARFDie getDIEAtIndex(unsigned Index) {
assert(OrigUnit != nullptr);
return OrigUnit->getDIEAtIndex(Index);
}
const DWARFDebugInfoEntry *getDebugInfoEntry(unsigned Index) const {
assert(OrigUnit != nullptr);
return OrigUnit->getDebugInfoEntry(Index);
}
DWARFDie getUnitDIE(bool ExtractUnitDIEOnly = true) {
assert(OrigUnit != nullptr);
return OrigUnit->getUnitDIE(ExtractUnitDIEOnly);
}
DWARFDie getDIE(const DWARFDebugInfoEntry *Die) {
assert(OrigUnit != nullptr);
return DWARFDie(OrigUnit, Die);
}
uint32_t getDIEIndex(const DWARFDebugInfoEntry *Die) const {
assert(OrigUnit != nullptr);
return OrigUnit->getDIEIndex(Die);
}
uint32_t getDIEIndex(const DWARFDie &Die) const {
assert(OrigUnit != nullptr);
return OrigUnit->getDIEIndex(Die);
}
std::optional<DWARFFormValue> find(uint32_t DieIdx,
ArrayRef<dwarf::Attribute> Attrs) const {
assert(OrigUnit != nullptr);
return find(OrigUnit->getDebugInfoEntry(DieIdx), Attrs);
}
std::optional<DWARFFormValue> find(const DWARFDebugInfoEntry *Die,
ArrayRef<dwarf::Attribute> Attrs) const {
if (!Die)
return std::nullopt;
auto AbbrevDecl = Die->getAbbreviationDeclarationPtr();
if (AbbrevDecl) {
for (auto Attr : Attrs) {
if (auto Value = AbbrevDecl->getAttributeValue(Die->getOffset(), Attr,
*OrigUnit))
return Value;
}
}
return std::nullopt;
}
std::optional<uint32_t> getDIEIndexForOffset(uint64_t Offset) {
return OrigUnit->getDIEIndexForOffset(Offset);
}
/// @}
private:
/// DWARFFile containing this compile unit.
DWARFFile &ContaingFile;
/// Pointer to the paired compile unit from the input DWARF.
DWARFUnit *OrigUnit = nullptr;
};
} // end of namespace dwarflinker_parallel
} // end namespace llvm
#endif // LLVM_LIB_DWARFLINKERPARALLEL_DWARFLINKERCOMPILEUNIT_H
|
