LLVM 20.0.0git
NativeFunctionSymbol.cpp
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1//===- NativeFunctionSymbol.cpp - info about function symbols----*- C++ -*-===//
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
10
20
21using namespace llvm;
22using namespace llvm::codeview;
23using namespace llvm::pdb;
24
26 SymIndexId Id,
29 : NativeRawSymbol(Session, PDB_SymType::Function, Id), Sym(Sym),
30 RecordOffset(Offset) {}
31
33
35 PdbSymbolIdField ShowIdFields,
36 PdbSymbolIdField RecurseIdFields) const {
37 NativeRawSymbol::dump(OS, Indent, ShowIdFields, RecurseIdFields);
38 dumpSymbolField(OS, "name", getName(), Indent);
39 dumpSymbolField(OS, "length", getLength(), Indent);
40 dumpSymbolField(OS, "offset", getAddressOffset(), Indent);
41 dumpSymbolField(OS, "section", getAddressSection(), Indent);
42}
43
45 return Sym.CodeOffset;
46}
47
49std::string NativeFunctionSymbol::getName() const {
50 return std::string(Sym.Name);
51}
52
54
57}
58
61}
62
64 uint32_t OffsetInFunc) {
65 // Returns true if inline site contains the offset.
66 bool Found = false;
68 for (auto &Annot : IS.annotations()) {
69 switch (Annot.OpCode) {
70 case BinaryAnnotationsOpCode::CodeOffset:
71 case BinaryAnnotationsOpCode::ChangeCodeOffset:
72 case BinaryAnnotationsOpCode::ChangeCodeOffsetAndLineOffset:
73 CodeOffset += Annot.U1;
74 if (OffsetInFunc >= CodeOffset)
75 Found = true;
76 break;
77 case BinaryAnnotationsOpCode::ChangeCodeLength:
78 CodeOffset += Annot.U1;
79 if (Found && OffsetInFunc < CodeOffset)
80 return true;
81 Found = false;
82 break;
83 case BinaryAnnotationsOpCode::ChangeCodeLengthAndCodeOffset:
84 CodeOffset += Annot.U2;
85 if (OffsetInFunc >= CodeOffset && OffsetInFunc < CodeOffset + Annot.U1)
86 return true;
87 Found = false;
88 break;
89 default:
90 break;
91 }
92 }
93 return false;
94}
95
96std::unique_ptr<IPDBEnumSymbols>
98 uint16_t Modi;
99 if (!Session.moduleIndexForVA(VA, Modi))
100 return nullptr;
101
103 if (!ModS) {
104 consumeError(ModS.takeError());
105 return nullptr;
106 }
107 CVSymbolArray Syms = ModS->getSymbolArray();
108
109 // Search for inline sites. There should be one matching top level inline
110 // site. Then search in its nested inline sites.
111 std::vector<SymIndexId> Frames;
113 auto Start = Syms.at(RecordOffset);
114 auto End = Syms.at(Sym.End);
115 while (Start != End) {
116 bool Found = false;
117 // Find matching inline site within Start and End.
118 for (; Start != End; ++Start) {
119 if (Start->kind() != S_INLINESITE)
120 continue;
121
122 InlineSiteSym IS =
123 cantFail(SymbolDeserializer::deserializeAs<InlineSiteSym>(*Start));
125 // Insert frames in reverse order.
127 IS, getVirtualAddress(), Modi, Start.offset());
128 Frames.insert(Frames.begin(), Id);
129
130 // Update offsets to search within this inline site.
131 ++Start;
132 End = Syms.at(IS.End);
133 Found = true;
134 break;
135 }
136
137 Start = Syms.at(IS.End);
138 if (Start == End)
139 break;
140 }
141
142 if (!Found)
143 break;
144 }
145
146 return std::make_unique<NativeEnumSymbols>(Session, std::move(Frames));
147}
bool End
Definition: ELF_riscv.cpp:480
Symbol * Sym
Definition: ELF_riscv.cpp:479
static bool inlineSiteContainsAddress(InlineSiteSym &IS, uint32_t OffsetInFunc)
raw_pwrite_stream & OS
Tagged union holding either a T or a Error.
Definition: Error.h:481
Error takeError()
Take ownership of the stored error.
Definition: Error.h:608
Iterator at(uint32_t Offset) const
given an offset into the array's underlying stream, return an iterator to the record at that offset.
iterator_range< BinaryAnnotationIterator > annotations() const
Definition: SymbolRecord.h:360
NativeFunctionSymbol(NativeSession &Session, SymIndexId Id, const codeview::ProcSym &Sym, uint32_t RecordOffset)
uint32_t getAddressSection() const override
std::unique_ptr< IPDBEnumSymbols > findInlineFramesByVA(uint64_t VA) const override
uint64_t getVirtualAddress() const override
void dump(raw_ostream &OS, int Indent, PdbSymbolIdField ShowIdFields, PdbSymbolIdField RecurseIdFields) const override
uint32_t getAddressOffset() const override
std::string getName() const override
uint64_t getLength() const override
uint32_t getRelativeVirtualAddress() const override
void dump(raw_ostream &OS, int Indent, PdbSymbolIdField ShowIdFields, PdbSymbolIdField RecurseIdFields) const override
SymbolCache & getSymbolCache()
uint64_t getVAFromSectOffset(uint32_t Section, uint32_t Offset) const
uint32_t getRVAFromSectOffset(uint32_t Section, uint32_t Offset) const
Expected< ModuleDebugStreamRef > getModuleDebugStream(uint32_t Index) const
bool moduleIndexForVA(uint64_t VA, uint16_t &ModuleIndex) const
SymIndexId getOrCreateInlineSymbol(codeview::InlineSiteSym Sym, uint64_t ParentAddr, uint16_t Modi, uint32_t RecordOffset) const
This class implements an extremely fast bulk output stream that can only output to a stream.
Definition: raw_ostream.h:52
void dumpSymbolField(raw_ostream &OS, StringRef Name, T Value, int Indent)
Definition: PDBExtras.h:47
PDB_SymType
These values correspond to the SymTagEnum enumeration, and are documented here: https://msdn....
Definition: PDBTypes.h:243
This is an optimization pass for GlobalISel generic memory operations.
Definition: AddressRanges.h:18
@ Offset
Definition: DWP.cpp:480
void cantFail(Error Err, const char *Msg=nullptr)
Report a fatal error if Err is a failure value.
Definition: Error.h:756
void consumeError(Error Err)
Consume a Error without doing anything.
Definition: Error.h:1069