1 //===- DWARFDebugPubTable.cpp ---------------------------------------------===//
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 #include "llvm/DebugInfo/DWARF/DWARFDebugPubTable.h"
11 #include "llvm/ADT/StringRef.h"
12 #include "llvm/BinaryFormat/Dwarf.h"
13 #include "llvm/Support/DataExtractor.h"
14 #include "llvm/Support/Format.h"
15 #include "llvm/Support/raw_ostream.h"
16 #include <cstdint>
17
18 using namespace llvm;
19 using namespace dwarf;
20
DWARFDebugPubTable(StringRef Data,bool LittleEndian,bool GnuStyle)21 DWARFDebugPubTable::DWARFDebugPubTable(StringRef Data, bool LittleEndian,
22 bool GnuStyle)
23 : GnuStyle(GnuStyle) {
24 DataExtractor PubNames(Data, LittleEndian, 0);
25 uint32_t Offset = 0;
26 while (PubNames.isValidOffset(Offset)) {
27 Sets.push_back({});
28 Set &SetData = Sets.back();
29
30 SetData.Length = PubNames.getU32(&Offset);
31 SetData.Version = PubNames.getU16(&Offset);
32 SetData.Offset = PubNames.getU32(&Offset);
33 SetData.Size = PubNames.getU32(&Offset);
34
35 while (Offset < Data.size()) {
36 uint32_t DieRef = PubNames.getU32(&Offset);
37 if (DieRef == 0)
38 break;
39 uint8_t IndexEntryValue = GnuStyle ? PubNames.getU8(&Offset) : 0;
40 StringRef Name = PubNames.getCStrRef(&Offset);
41 SetData.Entries.push_back(
42 {DieRef, PubIndexEntryDescriptor(IndexEntryValue), Name});
43 }
44 }
45 }
46
dump(raw_ostream & OS) const47 void DWARFDebugPubTable::dump(raw_ostream &OS) const {
48 for (const Set &S : Sets) {
49 OS << "length = " << format("0x%08x", S.Length);
50 OS << " version = " << format("0x%04x", S.Version);
51 OS << " unit_offset = " << format("0x%08x", S.Offset);
52 OS << " unit_size = " << format("0x%08x", S.Size) << '\n';
53 OS << (GnuStyle ? "Offset Linkage Kind Name\n"
54 : "Offset Name\n");
55
56 for (const Entry &E : S.Entries) {
57 OS << format("0x%8.8x ", E.SecOffset);
58 if (GnuStyle) {
59 StringRef EntryLinkage =
60 GDBIndexEntryLinkageString(E.Descriptor.Linkage);
61 StringRef EntryKind = dwarf::GDBIndexEntryKindString(E.Descriptor.Kind);
62 OS << format("%-8s", EntryLinkage.data()) << ' '
63 << format("%-8s", EntryKind.data()) << ' ';
64 }
65 OS << '\"' << E.Name << "\"\n";
66 }
67 }
68 }
69