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 InputSection *getInfoSection() const { 36 return cast<InputSection>(infoSection.sec); 37 } 38 39 const llvm::DWARFSection &getLoclistsSection() const override { 40 return loclistsSection; 41 } 42 43 const llvm::DWARFSection &getRangesSection() const override { 44 return rangesSection; 45 } 46 47 const llvm::DWARFSection &getRnglistsSection() const override { 48 return rnglistsSection; 49 } 50 51 const llvm::DWARFSection &getStrOffsetsSection() const override { 52 return strOffsetsSection; 53 } 54 55 const llvm::DWARFSection &getLineSection() const override { 56 return lineSection; 57 } 58 59 const llvm::DWARFSection &getAddrSection() const override { 60 return addrSection; 61 } 62 63 const LLDDWARFSection &getGnuPubnamesSection() const override { 64 return gnuPubnamesSection; 65 } 66 67 const LLDDWARFSection &getGnuPubtypesSection() const override { 68 return gnuPubtypesSection; 69 } 70 71 StringRef getFileName() const override { return ""; } 72 StringRef getAbbrevSection() const override { return abbrevSection; } 73 StringRef getStrSection() const override { return strSection; } 74 StringRef getLineStrSection() const override { return lineStrSection; } 75 76 bool isLittleEndian() const override { 77 return ELFT::TargetEndianness == llvm::support::little; 78 } 79 80 llvm::Optional<llvm::RelocAddrEntry> find(const llvm::DWARFSection &sec, 81 uint64_t pos) const override; 82 83 private: 84 template <class RelTy> 85 llvm::Optional<llvm::RelocAddrEntry> findAux(const InputSectionBase &sec, 86 uint64_t pos, 87 ArrayRef<RelTy> rels) const; 88 89 LLDDWARFSection gnuPubnamesSection; 90 LLDDWARFSection gnuPubtypesSection; 91 LLDDWARFSection infoSection; 92 LLDDWARFSection loclistsSection; 93 LLDDWARFSection rangesSection; 94 LLDDWARFSection rnglistsSection; 95 LLDDWARFSection strOffsetsSection; 96 LLDDWARFSection lineSection; 97 LLDDWARFSection addrSection; 98 StringRef abbrevSection; 99 StringRef strSection; 100 StringRef lineStrSection; 101 }; 102 103 } // namespace elf 104 } // namespace lld 105 106 #endif 107