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