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 }
58 
59 void MappingTraits<DWARFYAML::ARangeDescriptor>::mapping(
60     IO &IO, DWARFYAML::ARangeDescriptor &Descriptor) {
61   IO.mapRequired("Address", Descriptor.Address);
62   IO.mapRequired("Length", Descriptor.Length);
63 }
64 
65 void MappingTraits<DWARFYAML::ARange>::mapping(IO &IO,
66                                                DWARFYAML::ARange &Range) {
67   IO.mapRequired("Length", Range.Length);
68   IO.mapRequired("Version", Range.Version);
69   IO.mapRequired("CuOffset", Range.CuOffset);
70   IO.mapRequired("AddrSize", Range.AddrSize);
71   IO.mapRequired("SegSize", Range.SegSize);
72   IO.mapRequired("Descriptors", Range.Descriptors);
73 }
74 
75 void MappingTraits<DWARFYAML::PubEntry>::mapping(IO &IO,
76                                                  DWARFYAML::PubEntry &Entry) {
77   IO.mapRequired("DieOffset", Entry.DieOffset);
78   if (reinterpret_cast<DWARFYAML::PubSection *>(IO.getContext())->IsGNUStyle)
79     IO.mapRequired("Descriptor", Entry.Descriptor);
80   IO.mapRequired("Name", Entry.Name);
81 }
82 
83 void MappingTraits<DWARFYAML::PubSection>::mapping(
84     IO &IO, DWARFYAML::PubSection &Section) {
85   auto OldContext = IO.getContext();
86   IO.setContext(&Section);
87 
88   IO.mapRequired("Length", Section.Length);
89   IO.mapRequired("Version", Section.Version);
90   IO.mapRequired("UnitOffset", Section.UnitOffset);
91   IO.mapRequired("UnitSize", Section.UnitSize);
92   IO.mapRequired("Entries", Section.Entries);
93 
94   IO.setContext(OldContext);
95 }
96 
97 void MappingTraits<DWARFYAML::Unit>::mapping(IO &IO, DWARFYAML::Unit &Unit) {
98   IO.mapRequired("Length", Unit.Length);
99   IO.mapRequired("Version", Unit.Version);
100   IO.mapRequired("AbbrOffset", Unit.AbbrOffset);
101   IO.mapRequired("AddrSize", Unit.AddrSize);
102   IO.mapOptional("Entries", Unit.Entries);
103 }
104 
105 void MappingTraits<DWARFYAML::Entry>::mapping(IO &IO, DWARFYAML::Entry &Entry) {
106   IO.mapRequired("AbbrCode", Entry.AbbrCode);
107   IO.mapRequired("Values", Entry.Values);
108 }
109 
110 void MappingTraits<DWARFYAML::FormValue>::mapping(
111     IO &IO, DWARFYAML::FormValue &FormValue) {
112   IO.mapOptional("Value", FormValue.Value);
113   if (!FormValue.CStr.empty() || !IO.outputting())
114     IO.mapOptional("CStr", FormValue.CStr);
115   if (!FormValue.BlockData.empty() || !IO.outputting())
116     IO.mapOptional("BlockData", FormValue.BlockData);
117 }
118 
119 void MappingTraits<DWARFYAML::File>::mapping(IO &IO, DWARFYAML::File &File) {
120   IO.mapRequired("Name", File.Name);
121   IO.mapRequired("DirIdx", File.DirIdx);
122   IO.mapRequired("ModTime", File.ModTime);
123   IO.mapRequired("Length", File.Length);
124 }
125 
126 void MappingTraits<DWARFYAML::LineTableOpcode>::mapping(
127     IO &IO, DWARFYAML::LineTableOpcode &LineTableOpcode) {
128   IO.mapRequired("Opcode", LineTableOpcode.Opcode);
129   if (LineTableOpcode.Opcode == dwarf::DW_LNS_extended_op) {
130     IO.mapRequired("ExtLen", LineTableOpcode.ExtLen);
131     IO.mapRequired("SubOpcode", LineTableOpcode.SubOpcode);
132   }
133 
134   if (!LineTableOpcode.UnknownOpcodeData.empty() || !IO.outputting())
135     IO.mapOptional("UnknownOpcodeData", LineTableOpcode.UnknownOpcodeData);
136   if (!LineTableOpcode.UnknownOpcodeData.empty() || !IO.outputting())
137     IO.mapOptional("StandardOpcodeData", LineTableOpcode.StandardOpcodeData);
138   if (!LineTableOpcode.FileEntry.Name.empty() || !IO.outputting())
139     IO.mapOptional("FileEntry", LineTableOpcode.FileEntry);
140   if (LineTableOpcode.Opcode == dwarf::DW_LNS_advance_line || !IO.outputting())
141     IO.mapOptional("SData", LineTableOpcode.SData);
142   IO.mapOptional("Data", LineTableOpcode.Data);
143 }
144 
145 void MappingTraits<DWARFYAML::LineTable>::mapping(
146     IO &IO, DWARFYAML::LineTable &LineTable) {
147   IO.mapRequired("TotalLength", LineTable.TotalLength);
148   if (LineTable.TotalLength == UINT32_MAX)
149     IO.mapRequired("TotalLength64", LineTable.TotalLength64);
150   IO.mapRequired("Version", LineTable.Version);
151   IO.mapRequired("PrologueLength", LineTable.PrologueLength);
152   IO.mapRequired("MinInstLength", LineTable.MinInstLength);
153   if(LineTable.Version >= 4)
154     IO.mapRequired("MaxOpsPerInst", LineTable.MaxOpsPerInst);
155   IO.mapRequired("DefaultIsStmt", LineTable.DefaultIsStmt);
156   IO.mapRequired("LineBase", LineTable.LineBase);
157   IO.mapRequired("LineRange", LineTable.LineRange);
158   IO.mapRequired("OpcodeBase", LineTable.OpcodeBase);
159   IO.mapRequired("StandardOpcodeLengths", LineTable.StandardOpcodeLengths);
160   IO.mapRequired("IncludeDirs", LineTable.IncludeDirs);
161   IO.mapRequired("Files", LineTable.Files);
162   IO.mapRequired("Opcodes", LineTable.Opcodes);
163 }
164 
165 } // namespace llvm::yaml
166 
167 } // namespace llvm
168