| 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 | #include <optional> |
| 17 | |
| 18 | namespace lld::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>(Val: 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::endianness::little; |
| 78 | } |
| 79 | |
| 80 | std::optional<llvm::RelocAddrEntry> find(const llvm::DWARFSection &sec, |
| 81 | uint64_t pos) const override; |
| 82 | |
| 83 | private: |
| 84 | template <class RelTy> |
| 85 | std::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 lld::elf |
| 104 | |
| 105 | #endif |
| 106 |