1 //===- DWARFYAML.cpp - DWARF YAMLIO implementation ------------------------===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 //
10 // This file defines classes for handling the YAML representation of DWARF Debug
11 // Info.
12 //
13 //===----------------------------------------------------------------------===//
14 
15 #include "llvm/ObjectYAML/DWARFYAML.h"
16 
17 namespace llvm {
18 
19 bool DWARFYAML::Data::isEmpty() const {
20   return 0 == DebugStrings.size() + AbbrevDecls.size();
21 }
22 
23 namespace yaml {
24 
25 void MappingTraits<DWARFYAML::Data>::mapping(IO &IO, DWARFYAML::Data &DWARF) {
26   auto oldContext = IO.getContext();
27   IO.setContext(&DWARF);
28   IO.mapOptional("debug_str", DWARF.DebugStrings);
29   IO.mapOptional("debug_abbrev", DWARF.AbbrevDecls);
30   if (!DWARF.ARanges.empty() || !IO.outputting())
31     IO.mapOptional("debug_aranges", DWARF.ARanges);
32   if (!DWARF.PubNames.Entries.empty() || !IO.outputting())
33     IO.mapOptional("debug_pubnames", DWARF.PubNames);
34   if (!DWARF.PubTypes.Entries.empty() || !IO.outputting())
35     IO.mapOptional("debug_pubtypes", DWARF.PubTypes);
36   if (!DWARF.GNUPubNames.Entries.empty() || !IO.outputting())
37     IO.mapOptional("debug_gnu_pubnames", DWARF.GNUPubNames);
38   if (!DWARF.GNUPubTypes.Entries.empty() || !IO.outputting())
39     IO.mapOptional("debug_gnu_pubtypes", DWARF.GNUPubTypes);
40   IO.mapOptional("debug_info", DWARF.CompileUnits);
41   IO.mapOptional("debug_line", DWARF.DebugLines);
42   IO.setContext(&oldContext);
43 }
44 
45 void MappingTraits<DWARFYAML::Abbrev>::mapping(IO &IO,
46                                                DWARFYAML::Abbrev &Abbrev) {
47   IO.mapRequired("Code", Abbrev.Code);
48   IO.mapRequired("Tag", Abbrev.Tag);
49   IO.mapRequired("Children", Abbrev.Children);
50   IO.mapRequired("Attributes", Abbrev.Attributes);
51 }
52 
53 void MappingTraits<DWARFYAML::AttributeAbbrev>::mapping(
54     IO &IO, DWARFYAML::AttributeAbbrev &AttAbbrev) {
55   IO.mapRequired("Attribute", AttAbbrev.Attribute);
56   IO.mapRequired("Form", AttAbbrev.Form);
57   if(AttAbbrev.Form == dwarf::DW_FORM_implicit_const)
58     IO.mapRequired("Value", AttAbbrev.Value);
59 }
60 
61 void MappingTraits<DWARFYAML::ARangeDescriptor>::mapping(
62     IO &IO, DWARFYAML::ARangeDescriptor &Descriptor) {
63   IO.mapRequired("Address", Descriptor.Address);
64   IO.mapRequired("Length", Descriptor.Length);
65 }
66 
67 void MappingTraits<DWARFYAML::ARange>::mapping(IO &IO,
68                                                DWARFYAML::ARange &Range) {
69   IO.mapRequired("Length", Range.Length);
70   IO.mapRequired("Version", Range.Version);
71   IO.mapRequired("CuOffset", Range.CuOffset);
72   IO.mapRequired("AddrSize", Range.AddrSize);
73   IO.mapRequired("SegSize", Range.SegSize);
74   IO.mapRequired("Descriptors", Range.Descriptors);
75 }
76 
77 void MappingTraits<DWARFYAML::PubEntry>::mapping(IO &IO,
78                                                  DWARFYAML::PubEntry &Entry) {
79   IO.mapRequired("DieOffset", Entry.DieOffset);
80   if (reinterpret_cast<DWARFYAML::PubSection *>(IO.getContext())->IsGNUStyle)
81     IO.mapRequired("Descriptor", Entry.Descriptor);
82   IO.mapRequired("Name", Entry.Name);
83 }
84 
85 void MappingTraits<DWARFYAML::PubSection>::mapping(
86     IO &IO, DWARFYAML::PubSection &Section) {
87   auto OldContext = IO.getContext();
88   IO.setContext(&Section);
89 
90   IO.mapRequired("Length", Section.Length);
91   IO.mapRequired("Version", Section.Version);
92   IO.mapRequired("UnitOffset", Section.UnitOffset);
93   IO.mapRequired("UnitSize", Section.UnitSize);
94   IO.mapRequired("Entries", Section.Entries);
95 
96   IO.setContext(OldContext);
97 }
98 
99 void MappingTraits<DWARFYAML::Unit>::mapping(IO &IO, DWARFYAML::Unit &Unit) {
100   IO.mapRequired("Length", Unit.Length);
101   IO.mapRequired("Version", Unit.Version);
102   if (Unit.Version >= 5)
103     IO.mapRequired("UnitType", Unit.Type);
104   IO.mapRequired("AbbrOffset", Unit.AbbrOffset);
105   IO.mapRequired("AddrSize", Unit.AddrSize);
106   IO.mapOptional("Entries", Unit.Entries);
107 }
108 
109 void MappingTraits<DWARFYAML::Entry>::mapping(IO &IO, DWARFYAML::Entry &Entry) {
110   IO.mapRequired("AbbrCode", Entry.AbbrCode);
111   IO.mapRequired("Values", Entry.Values);
112 }
113 
114 void MappingTraits<DWARFYAML::FormValue>::mapping(
115     IO &IO, DWARFYAML::FormValue &FormValue) {
116   IO.mapOptional("Value", FormValue.Value);
117   if (!FormValue.CStr.empty() || !IO.outputting())
118     IO.mapOptional("CStr", FormValue.CStr);
119   if (!FormValue.BlockData.empty() || !IO.outputting())
120     IO.mapOptional("BlockData", FormValue.BlockData);
121 }
122 
123 void MappingTraits<DWARFYAML::File>::mapping(IO &IO, DWARFYAML::File &File) {
124   IO.mapRequired("Name", File.Name);
125   IO.mapRequired("DirIdx", File.DirIdx);
126   IO.mapRequired("ModTime", File.ModTime);
127   IO.mapRequired("Length", File.Length);
128 }
129 
130 void MappingTraits<DWARFYAML::LineTableOpcode>::mapping(
131     IO &IO, DWARFYAML::LineTableOpcode &LineTableOpcode) {
132   IO.mapRequired("Opcode", LineTableOpcode.Opcode);
133   if (LineTableOpcode.Opcode == dwarf::DW_LNS_extended_op) {
134     IO.mapRequired("ExtLen", LineTableOpcode.ExtLen);
135     IO.mapRequired("SubOpcode", LineTableOpcode.SubOpcode);
136   }
137 
138   if (!LineTableOpcode.UnknownOpcodeData.empty() || !IO.outputting())
139     IO.mapOptional("UnknownOpcodeData", LineTableOpcode.UnknownOpcodeData);
140   if (!LineTableOpcode.UnknownOpcodeData.empty() || !IO.outputting())
141     IO.mapOptional("StandardOpcodeData", LineTableOpcode.StandardOpcodeData);
142   if (!LineTableOpcode.FileEntry.Name.empty() || !IO.outputting())
143     IO.mapOptional("FileEntry", LineTableOpcode.FileEntry);
144   if (LineTableOpcode.Opcode == dwarf::DW_LNS_advance_line || !IO.outputting())
145     IO.mapOptional("SData", LineTableOpcode.SData);
146   IO.mapOptional("Data", LineTableOpcode.Data);
147 }
148 
149 void MappingTraits<DWARFYAML::LineTable>::mapping(
150     IO &IO, DWARFYAML::LineTable &LineTable) {
151   IO.mapRequired("Length", LineTable.Length);
152   IO.mapRequired("Version", LineTable.Version);
153   IO.mapRequired("PrologueLength", LineTable.PrologueLength);
154   IO.mapRequired("MinInstLength", LineTable.MinInstLength);
155   if(LineTable.Version >= 4)
156     IO.mapRequired("MaxOpsPerInst", LineTable.MaxOpsPerInst);
157   IO.mapRequired("DefaultIsStmt", LineTable.DefaultIsStmt);
158   IO.mapRequired("LineBase", LineTable.LineBase);
159   IO.mapRequired("LineRange", LineTable.LineRange);
160   IO.mapRequired("OpcodeBase", LineTable.OpcodeBase);
161   IO.mapRequired("StandardOpcodeLengths", LineTable.StandardOpcodeLengths);
162   IO.mapRequired("IncludeDirs", LineTable.IncludeDirs);
163   IO.mapRequired("Files", LineTable.Files);
164   IO.mapRequired("Opcodes", LineTable.Opcodes);
165 }
166 
167 void MappingTraits<DWARFYAML::InitialLength>::mapping(
168     IO &IO, DWARFYAML::InitialLength &InitialLength) {
169   IO.mapRequired("TotalLength", InitialLength.TotalLength);
170   if (InitialLength.isDWARF64())
171     IO.mapRequired("TotalLength64", InitialLength.TotalLength64);
172 }
173 
174 } // end namespace yaml
175 
176 } // end namespace llvm
177