1 //===- DWARFDebugPubTable.cpp ---------------------------------------------===// 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 #include "llvm/DebugInfo/DWARF/DWARFDebugPubTable.h" 10 #include "llvm/DebugInfo/DWARF/DWARFDataExtractor.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 21 DWARFDebugPubTable::DWARFDebugPubTable(const DWARFObject &Obj, 22 const DWARFSection &Sec, 23 bool LittleEndian, bool GnuStyle) 24 : GnuStyle(GnuStyle) { 25 DWARFDataExtractor PubNames(Obj, Sec, LittleEndian, 0); 26 uint64_t Offset = 0; 27 while (PubNames.isValidOffset(Offset)) { 28 Sets.push_back({}); 29 Set &SetData = Sets.back(); 30 31 SetData.Length = PubNames.getU32(&Offset); 32 SetData.Version = PubNames.getU16(&Offset); 33 SetData.Offset = PubNames.getRelocatedValue(4, &Offset); 34 SetData.Size = PubNames.getU32(&Offset); 35 36 while (Offset < Sec.Data.size()) { 37 uint32_t DieRef = PubNames.getU32(&Offset); 38 if (DieRef == 0) 39 break; 40 uint8_t IndexEntryValue = GnuStyle ? PubNames.getU8(&Offset) : 0; 41 StringRef Name = PubNames.getCStrRef(&Offset); 42 SetData.Entries.push_back( 43 {DieRef, PubIndexEntryDescriptor(IndexEntryValue), Name}); 44 } 45 } 46 } 47 48 void DWARFDebugPubTable::dump(raw_ostream &OS) const { 49 for (const Set &S : Sets) { 50 OS << "length = " << format("0x%08x", S.Length); 51 OS << " version = " << format("0x%04x", S.Version); 52 OS << " unit_offset = " << format("0x%08" PRIx64, S.Offset); 53 OS << " unit_size = " << format("0x%08x", S.Size) << '\n'; 54 OS << (GnuStyle ? "Offset Linkage Kind Name\n" 55 : "Offset Name\n"); 56 57 for (const Entry &E : S.Entries) { 58 OS << format("0x%8.8" PRIx64 " ", E.SecOffset); 59 if (GnuStyle) { 60 StringRef EntryLinkage = 61 GDBIndexEntryLinkageString(E.Descriptor.Linkage); 62 StringRef EntryKind = dwarf::GDBIndexEntryKindString(E.Descriptor.Kind); 63 OS << format("%-8s", EntryLinkage.data()) << ' ' 64 << format("%-8s", EntryKind.data()) << ' '; 65 } 66 OS << '\"' << E.Name << "\"\n"; 67 } 68 } 69 } 70