LLVM  14.0.0git
DWARFYAML.cpp
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1 //===- DWARFYAML.cpp - DWARF YAMLIO implementation ------------------------===//
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 //
9 // This file defines classes for handling the YAML representation of DWARF Debug
10 // Info.
11 //
12 //===----------------------------------------------------------------------===//
13 
16 #include "llvm/Support/Errc.h"
17 #include "llvm/Support/Error.h"
18 
19 namespace llvm {
20 
22  return getNonEmptySectionNames().empty();
23 }
24 
26  SetVector<StringRef> SecNames;
27  if (DebugStrings)
28  SecNames.insert("debug_str");
29  if (DebugAranges)
30  SecNames.insert("debug_aranges");
31  if (DebugRanges)
32  SecNames.insert("debug_ranges");
33  if (!DebugLines.empty())
34  SecNames.insert("debug_line");
35  if (DebugAddr)
36  SecNames.insert("debug_addr");
37  if (!DebugAbbrev.empty())
38  SecNames.insert("debug_abbrev");
39  if (!CompileUnits.empty())
40  SecNames.insert("debug_info");
41  if (PubNames)
42  SecNames.insert("debug_pubnames");
43  if (PubTypes)
44  SecNames.insert("debug_pubtypes");
45  if (GNUPubNames)
46  SecNames.insert("debug_gnu_pubnames");
47  if (GNUPubTypes)
48  SecNames.insert("debug_gnu_pubtypes");
49  if (DebugStrOffsets)
50  SecNames.insert("debug_str_offsets");
51  if (DebugRnglists)
52  SecNames.insert("debug_rnglists");
53  if (DebugLoclists)
54  SecNames.insert("debug_loclists");
55  return SecNames;
56 }
57 
60  if (AbbrevTableInfoMap.empty()) {
61  uint64_t AbbrevTableOffset = 0;
62  for (auto &AbbrevTable : enumerate(DebugAbbrev)) {
63  // If the abbrev table's ID isn't specified, we use the index as its ID.
64  uint64_t AbbrevTableID =
65  AbbrevTable.value().ID.getValueOr(AbbrevTable.index());
66  auto It = AbbrevTableInfoMap.insert(
67  {AbbrevTableID, AbbrevTableInfo{/*Index=*/AbbrevTable.index(),
68  /*Offset=*/AbbrevTableOffset}});
69  if (!It.second)
70  return createStringError(
72  "the ID (%" PRIu64 ") of abbrev table with index %zu has been used "
73  "by abbrev table with index %" PRIu64,
74  AbbrevTableID, AbbrevTable.index(), It.first->second.Index);
75 
76  AbbrevTableOffset +=
77  getAbbrevTableContentByIndex(AbbrevTable.index()).size();
78  }
79  }
80 
81  auto It = AbbrevTableInfoMap.find(ID);
82  if (It == AbbrevTableInfoMap.end())
84  "cannot find abbrev table whose ID is %" PRIu64,
85  ID);
86  return It->second;
87 }
88 
89 namespace yaml {
90 
91 void MappingTraits<DWARFYAML::Data>::mapping(IO &IO, DWARFYAML::Data &DWARF) {
92  void *OldContext = IO.getContext();
93  DWARFYAML::DWARFContext DWARFCtx;
94  IO.setContext(&DWARFCtx);
95  IO.mapOptional("debug_str", DWARF.DebugStrings);
96  IO.mapOptional("debug_abbrev", DWARF.DebugAbbrev);
97  IO.mapOptional("debug_aranges", DWARF.DebugAranges);
98  IO.mapOptional("debug_ranges", DWARF.DebugRanges);
99  IO.mapOptional("debug_pubnames", DWARF.PubNames);
100  IO.mapOptional("debug_pubtypes", DWARF.PubTypes);
101  DWARFCtx.IsGNUPubSec = true;
102  IO.mapOptional("debug_gnu_pubnames", DWARF.GNUPubNames);
103  IO.mapOptional("debug_gnu_pubtypes", DWARF.GNUPubTypes);
104  IO.mapOptional("debug_info", DWARF.CompileUnits);
105  IO.mapOptional("debug_line", DWARF.DebugLines);
106  IO.mapOptional("debug_addr", DWARF.DebugAddr);
107  IO.mapOptional("debug_str_offsets", DWARF.DebugStrOffsets);
108  IO.mapOptional("debug_rnglists", DWARF.DebugRnglists);
109  IO.mapOptional("debug_loclists", DWARF.DebugLoclists);
110  IO.setContext(OldContext);
111 }
112 
113 void MappingTraits<DWARFYAML::AbbrevTable>::mapping(
114  IO &IO, DWARFYAML::AbbrevTable &AbbrevTable) {
115  IO.mapOptional("ID", AbbrevTable.ID);
116  IO.mapOptional("Table", AbbrevTable.Table);
117 }
118 
119 void MappingTraits<DWARFYAML::Abbrev>::mapping(IO &IO,
120  DWARFYAML::Abbrev &Abbrev) {
121  IO.mapOptional("Code", Abbrev.Code);
122  IO.mapRequired("Tag", Abbrev.Tag);
123  IO.mapRequired("Children", Abbrev.Children);
124  IO.mapOptional("Attributes", Abbrev.Attributes);
125 }
126 
127 void MappingTraits<DWARFYAML::AttributeAbbrev>::mapping(
128  IO &IO, DWARFYAML::AttributeAbbrev &AttAbbrev) {
129  IO.mapRequired("Attribute", AttAbbrev.Attribute);
130  IO.mapRequired("Form", AttAbbrev.Form);
131  if(AttAbbrev.Form == dwarf::DW_FORM_implicit_const)
132  IO.mapRequired("Value", AttAbbrev.Value);
133 }
134 
135 void MappingTraits<DWARFYAML::ARangeDescriptor>::mapping(
136  IO &IO, DWARFYAML::ARangeDescriptor &Descriptor) {
137  IO.mapRequired("Address", Descriptor.Address);
138  IO.mapRequired("Length", Descriptor.Length);
139 }
140 
141 void MappingTraits<DWARFYAML::ARange>::mapping(IO &IO,
142  DWARFYAML::ARange &ARange) {
143  IO.mapOptional("Format", ARange.Format, dwarf::DWARF32);
144  IO.mapOptional("Length", ARange.Length);
145  IO.mapRequired("Version", ARange.Version);
146  IO.mapRequired("CuOffset", ARange.CuOffset);
147  IO.mapOptional("AddressSize", ARange.AddrSize);
148  IO.mapOptional("SegmentSelectorSize", ARange.SegSize, 0);
149  IO.mapOptional("Descriptors", ARange.Descriptors);
150 }
151 
152 void MappingTraits<DWARFYAML::RangeEntry>::mapping(
153  IO &IO, DWARFYAML::RangeEntry &Descriptor) {
154  IO.mapRequired("LowOffset", Descriptor.LowOffset);
155  IO.mapRequired("HighOffset", Descriptor.HighOffset);
156 }
157 
158 void MappingTraits<DWARFYAML::Ranges>::mapping(IO &IO,
159  DWARFYAML::Ranges &DebugRanges) {
160  IO.mapOptional("Offset", DebugRanges.Offset);
161  IO.mapOptional("AddrSize", DebugRanges.AddrSize);
162  IO.mapRequired("Entries", DebugRanges.Entries);
163 }
164 
165 void MappingTraits<DWARFYAML::PubEntry>::mapping(IO &IO,
166  DWARFYAML::PubEntry &Entry) {
167  IO.mapRequired("DieOffset", Entry.DieOffset);
168  if (static_cast<DWARFYAML::DWARFContext *>(IO.getContext())->IsGNUPubSec)
169  IO.mapRequired("Descriptor", Entry.Descriptor);
170  IO.mapRequired("Name", Entry.Name);
171 }
172 
173 void MappingTraits<DWARFYAML::PubSection>::mapping(
174  IO &IO, DWARFYAML::PubSection &Section) {
175  IO.mapOptional("Format", Section.Format, dwarf::DWARF32);
176  IO.mapRequired("Length", Section.Length);
177  IO.mapRequired("Version", Section.Version);
178  IO.mapRequired("UnitOffset", Section.UnitOffset);
179  IO.mapRequired("UnitSize", Section.UnitSize);
180  IO.mapRequired("Entries", Section.Entries);
181 }
182 
183 void MappingTraits<DWARFYAML::Unit>::mapping(IO &IO, DWARFYAML::Unit &Unit) {
184  IO.mapOptional("Format", Unit.Format, dwarf::DWARF32);
185  IO.mapOptional("Length", Unit.Length);
186  IO.mapRequired("Version", Unit.Version);
187  if (Unit.Version >= 5)
188  IO.mapRequired("UnitType", Unit.Type);
189  IO.mapOptional("AbbrevTableID", Unit.AbbrevTableID);
190  IO.mapOptional("AbbrOffset", Unit.AbbrOffset);
191  IO.mapOptional("AddrSize", Unit.AddrSize);
192  IO.mapOptional("Entries", Unit.Entries);
193 }
194 
195 void MappingTraits<DWARFYAML::Entry>::mapping(IO &IO, DWARFYAML::Entry &Entry) {
196  IO.mapRequired("AbbrCode", Entry.AbbrCode);
197  IO.mapOptional("Values", Entry.Values);
198 }
199 
200 void MappingTraits<DWARFYAML::FormValue>::mapping(
201  IO &IO, DWARFYAML::FormValue &FormValue) {
202  IO.mapOptional("Value", FormValue.Value);
203  if (!FormValue.CStr.empty() || !IO.outputting())
204  IO.mapOptional("CStr", FormValue.CStr);
205  if (!FormValue.BlockData.empty() || !IO.outputting())
206  IO.mapOptional("BlockData", FormValue.BlockData);
207 }
208 
209 void MappingTraits<DWARFYAML::File>::mapping(IO &IO, DWARFYAML::File &File) {
210  IO.mapRequired("Name", File.Name);
211  IO.mapRequired("DirIdx", File.DirIdx);
212  IO.mapRequired("ModTime", File.ModTime);
213  IO.mapRequired("Length", File.Length);
214 }
215 
216 void MappingTraits<DWARFYAML::LineTableOpcode>::mapping(
217  IO &IO, DWARFYAML::LineTableOpcode &LineTableOpcode) {
218  IO.mapRequired("Opcode", LineTableOpcode.Opcode);
219  if (LineTableOpcode.Opcode == dwarf::DW_LNS_extended_op) {
220  IO.mapOptional("ExtLen", LineTableOpcode.ExtLen);
221  IO.mapRequired("SubOpcode", LineTableOpcode.SubOpcode);
222  }
223 
224  if (!LineTableOpcode.UnknownOpcodeData.empty() || !IO.outputting())
225  IO.mapOptional("UnknownOpcodeData", LineTableOpcode.UnknownOpcodeData);
226  if (!LineTableOpcode.UnknownOpcodeData.empty() || !IO.outputting())
227  IO.mapOptional("StandardOpcodeData", LineTableOpcode.StandardOpcodeData);
228  if (!LineTableOpcode.FileEntry.Name.empty() || !IO.outputting())
229  IO.mapOptional("FileEntry", LineTableOpcode.FileEntry);
230  if (LineTableOpcode.Opcode == dwarf::DW_LNS_advance_line || !IO.outputting())
231  IO.mapOptional("SData", LineTableOpcode.SData);
232  IO.mapOptional("Data", LineTableOpcode.Data);
233 }
234 
235 void MappingTraits<DWARFYAML::LineTable>::mapping(
236  IO &IO, DWARFYAML::LineTable &LineTable) {
237  IO.mapOptional("Format", LineTable.Format, dwarf::DWARF32);
238  IO.mapOptional("Length", LineTable.Length);
239  IO.mapRequired("Version", LineTable.Version);
240  IO.mapOptional("PrologueLength", LineTable.PrologueLength);
241  IO.mapRequired("MinInstLength", LineTable.MinInstLength);
242  if(LineTable.Version >= 4)
243  IO.mapRequired("MaxOpsPerInst", LineTable.MaxOpsPerInst);
244  IO.mapRequired("DefaultIsStmt", LineTable.DefaultIsStmt);
245  IO.mapRequired("LineBase", LineTable.LineBase);
246  IO.mapRequired("LineRange", LineTable.LineRange);
247  IO.mapOptional("OpcodeBase", LineTable.OpcodeBase);
248  IO.mapOptional("StandardOpcodeLengths", LineTable.StandardOpcodeLengths);
249  IO.mapOptional("IncludeDirs", LineTable.IncludeDirs);
250  IO.mapOptional("Files", LineTable.Files);
251  IO.mapOptional("Opcodes", LineTable.Opcodes);
252 }
253 
254 void MappingTraits<DWARFYAML::SegAddrPair>::mapping(
255  IO &IO, DWARFYAML::SegAddrPair &SegAddrPair) {
256  IO.mapOptional("Segment", SegAddrPair.Segment, 0);
257  IO.mapOptional("Address", SegAddrPair.Address, 0);
258 }
259 
260 void MappingTraits<DWARFYAML::AddrTableEntry>::mapping(
261  IO &IO, DWARFYAML::AddrTableEntry &AddrTable) {
262  IO.mapOptional("Format", AddrTable.Format, dwarf::DWARF32);
263  IO.mapOptional("Length", AddrTable.Length);
264  IO.mapRequired("Version", AddrTable.Version);
265  IO.mapOptional("AddressSize", AddrTable.AddrSize);
266  IO.mapOptional("SegmentSelectorSize", AddrTable.SegSelectorSize, 0);
267  IO.mapOptional("Entries", AddrTable.SegAddrPairs);
268 }
269 
270 void MappingTraits<DWARFYAML::StringOffsetsTable>::mapping(
271  IO &IO, DWARFYAML::StringOffsetsTable &StrOffsetsTable) {
272  IO.mapOptional("Format", StrOffsetsTable.Format, dwarf::DWARF32);
273  IO.mapOptional("Length", StrOffsetsTable.Length);
274  IO.mapOptional("Version", StrOffsetsTable.Version, 5);
275  IO.mapOptional("Padding", StrOffsetsTable.Padding, 0);
276  IO.mapOptional("Offsets", StrOffsetsTable.Offsets);
277 }
278 
279 void MappingTraits<DWARFYAML::DWARFOperation>::mapping(
280  IO &IO, DWARFYAML::DWARFOperation &DWARFOperation) {
281  IO.mapRequired("Operator", DWARFOperation.Operator);
282  IO.mapOptional("Values", DWARFOperation.Values);
283 }
284 
285 void MappingTraits<DWARFYAML::RnglistEntry>::mapping(
286  IO &IO, DWARFYAML::RnglistEntry &RnglistEntry) {
287  IO.mapRequired("Operator", RnglistEntry.Operator);
288  IO.mapOptional("Values", RnglistEntry.Values);
289 }
290 
291 void MappingTraits<DWARFYAML::LoclistEntry>::mapping(
292  IO &IO, DWARFYAML::LoclistEntry &LoclistEntry) {
293  IO.mapRequired("Operator", LoclistEntry.Operator);
294  IO.mapOptional("Values", LoclistEntry.Values);
295  IO.mapOptional("DescriptionsLength", LoclistEntry.DescriptionsLength);
296  IO.mapOptional("Descriptions", LoclistEntry.Descriptions);
297 }
298 
299 template <typename EntryType>
300 void MappingTraits<DWARFYAML::ListEntries<EntryType>>::mapping(
301  IO &IO, DWARFYAML::ListEntries<EntryType> &ListEntries) {
302  IO.mapOptional("Entries", ListEntries.Entries);
303  IO.mapOptional("Content", ListEntries.Content);
304 }
305 
306 template <typename EntryType>
307 std::string MappingTraits<DWARFYAML::ListEntries<EntryType>>::validate(
308  IO &IO, DWARFYAML::ListEntries<EntryType> &ListEntries) {
309  if (ListEntries.Entries && ListEntries.Content)
310  return "Entries and Content can't be used together";
311  return "";
312 }
313 
314 template <typename EntryType>
315 void MappingTraits<DWARFYAML::ListTable<EntryType>>::mapping(
316  IO &IO, DWARFYAML::ListTable<EntryType> &ListTable) {
317  IO.mapOptional("Format", ListTable.Format, dwarf::DWARF32);
318  IO.mapOptional("Length", ListTable.Length);
319  IO.mapOptional("Version", ListTable.Version, 5);
320  IO.mapOptional("AddressSize", ListTable.AddrSize);
321  IO.mapOptional("SegmentSelectorSize", ListTable.SegSelectorSize, 0);
322  IO.mapOptional("OffsetEntryCount", ListTable.OffsetEntryCount);
323  IO.mapOptional("Offsets", ListTable.Offsets);
324  IO.mapOptional("Lists", ListTable.Lists);
325 }
326 
327 } // end namespace yaml
328 
329 } // end namespace llvm
llvm::errc::invalid_argument
@ invalid_argument
llvm
This is an optimization pass for GlobalISel generic memory operations.
Definition: AllocatorList.h:23
llvm::DWARFYAML::Data::DebugRnglists
Optional< std::vector< ListTable< RnglistEntry > > > DebugRnglists
Definition: DWARFYAML.h:228
llvm::DWARFYAML::DWARFContext
Class that contains helpful context information when mapping YAML into DWARF data structures.
Definition: DWARFYAML.h:105
llvm::enumerate
detail::enumerator< R > enumerate(R &&TheRange)
Given an input range, returns a new range whose values are are pair (A,B) such that A is the 0-based ...
Definition: STLExtras.h:2031
llvm::DWARFYAML::Data::DebugLoclists
Optional< std::vector< ListTable< LoclistEntry > > > DebugLoclists
Definition: DWARFYAML.h:229
Error.h
Errc.h
llvm::DWARFYAML::Data::isEmpty
bool isEmpty() const
Definition: DWARFYAML.cpp:21
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std::vector< LineTable > DebugLines
Definition: DWARFYAML.h:227
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Tagged union holding either a T or a Error.
Definition: APFloat.h:42
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void validate(const Triple &TT, const FeatureBitset &FeatureBits)
Definition: RISCVBaseInfo.cpp:95
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Definition: DWARFYAML.h:210
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Optional< std::vector< AddrTableEntry > > DebugAddr
Definition: DWARFYAML.h:218
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@ Section
Legacy Tags.
Definition: ARMBuildAttributes.h:82
llvm::DWARFYAML::Data::DebugRanges
Optional< std::vector< Ranges > > DebugRanges
Definition: DWARFYAML.h:217
llvm::DWARFYAML::Data::PubTypes
Optional< PubSection > PubTypes
Definition: DWARFYAML.h:220
llvm::DWARFYAML::Data::DebugAbbrev
std::vector< AbbrevTable > DebugAbbrev
Definition: DWARFYAML.h:213
llvm::DWARFYAML::Data::PubNames
Optional< PubSection > PubNames
Definition: DWARFYAML.h:219
llvm::DWARFYAML::Data::GNUPubTypes
Optional< PubSection > GNUPubTypes
Definition: DWARFYAML.h:223
llvm::DWARFYAML::Data::GNUPubNames
Optional< PubSection > GNUPubNames
Definition: DWARFYAML.h:222
DWARFYAML.h
llvm::DWARFYAML::Data::getNonEmptySectionNames
SetVector< StringRef > getNonEmptySectionNames() const
Definition: DWARFYAML.cpp:25
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constexpr T getValueOr(U &&value) const LLVM_LVALUE_FUNCTION
Definition: Optional.h:297
llvm::DWARFYAML::Data::AbbrevTableInfo
Definition: DWARFYAML.h:235
uint64_t
llvm::DWARFYAML::AbbrevTable::Table
std::vector< Abbrev > Table
Definition: DWARFYAML.h:45
llvm::SetVector::insert
bool insert(const value_type &X)
Insert a new element into the SetVector.
Definition: SetVector.h:141
Dwarf.h
llvm::DWARFYAML::Data::CompileUnits
std::vector< Unit > CompileUnits
Definition: DWARFYAML.h:225
llvm::DWARFYAML::AbbrevTable
Definition: DWARFYAML.h:43
llvm::DWARFYAML::Data::DebugStrOffsets
Optional< std::vector< StringOffsetsTable > > DebugStrOffsets
Definition: DWARFYAML.h:215
llvm::createStringError
Error createStringError(std::error_code EC, char const *Fmt, const Ts &... Vals)
Create formatted StringError object.
Definition: Error.h:1241
llvm::DWARFYAML::AbbrevTable::ID
Optional< uint64_t > ID
Definition: DWARFYAML.h:44
llvm::DWARFYAML::Data::getAbbrevTableInfoByID
Expected< AbbrevTableInfo > getAbbrevTableInfoByID(uint64_t ID) const
Definition: DWARFYAML.cpp:59
llvm::DWARFYAML::Data::DebugAranges
Optional< std::vector< ARange > > DebugAranges
Definition: DWARFYAML.h:216
llvm::DWARFYAML::DWARFContext::IsGNUPubSec
bool IsGNUPubSec
Definition: DWARFYAML.h:106
llvm::SetVector
A vector that has set insertion semantics.
Definition: SetVector.h:40
llvm::DWARFYAML::Data::DebugStrings
Optional< std::vector< StringRef > > DebugStrings
Definition: DWARFYAML.h:214
File
Instrumentation for Order File
Definition: InstrOrderFile.cpp:205
llvm::dwarf::DWARF32
@ DWARF32
Definition: Dwarf.h:92
llvm::Intrinsic::ID
unsigned ID
Definition: TargetTransformInfo.h:38