1 //===- DWARF.h -----------------------------------------------*- C++ -*-===// 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 #ifndef LLD_ELF_DWARF_H 10 #define LLD_ELF_DWARF_H 11 12 #include "InputFiles.h" 13 #include "llvm/ADT/STLExtras.h" 14 #include "llvm/DebugInfo/DWARF/DWARFContext.h" 15 #include "llvm/Object/ELF.h" 16 17 namespace lld { 18 namespace elf { 19 20 class InputSection; 21 22 struct LLDDWARFSection final : public llvm::DWARFSection { 23 InputSectionBase *sec = nullptr; 24 }; 25 26 template <class ELFT> class LLDDwarfObj final : public llvm::DWARFObject { 27 public: 28 explicit LLDDwarfObj(ObjFile<ELFT> *obj); 29 30 void forEachInfoSections( 31 llvm::function_ref<void(const llvm::DWARFSection &)> f) const override { 32 f(infoSection); 33 } 34 35 const llvm::DWARFSection &getRangeSection() const override { 36 return rangeSection; 37 } 38 39 const llvm::DWARFSection &getRnglistsSection() const override { 40 return rngListsSection; 41 } 42 43 const llvm::DWARFSection &getLineSection() const override { 44 return lineSection; 45 } 46 47 const llvm::DWARFSection &getAddrSection() const override { 48 return addrSection; 49 } 50 51 const llvm::DWARFSection &getGnuPubNamesSection() const override { 52 return gnuPubNamesSection; 53 } 54 55 const llvm::DWARFSection &getGnuPubTypesSection() const override { 56 return gnuPubTypesSection; 57 } 58 59 StringRef getFileName() const override { return ""; } 60 StringRef getAbbrevSection() const override { return abbrevSection; } 61 StringRef getStringSection() const override { return strSection; } 62 StringRef getLineStringSection() const override { return lineStringSection; } 63 64 bool isLittleEndian() const override { 65 return ELFT::TargetEndianness == llvm::support::little; 66 } 67 68 llvm::Optional<llvm::RelocAddrEntry> find(const llvm::DWARFSection &sec, 69 uint64_t pos) const override; 70 71 private: 72 template <class RelTy> 73 llvm::Optional<llvm::RelocAddrEntry> findAux(const InputSectionBase &sec, 74 uint64_t pos, 75 ArrayRef<RelTy> rels) const; 76 77 LLDDWARFSection gnuPubNamesSection; 78 LLDDWARFSection gnuPubTypesSection; 79 LLDDWARFSection infoSection; 80 LLDDWARFSection rangeSection; 81 LLDDWARFSection rngListsSection; 82 LLDDWARFSection lineSection; 83 LLDDWARFSection addrSection; 84 StringRef abbrevSection; 85 StringRef strSection; 86 StringRef lineStringSection; 87 }; 88 89 } // namespace elf 90 } // namespace lld 91 92 #endif 93