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/ADT/STLFunctionalExtras.h"
15#include "llvm/DebugInfo/DWARF/DWARFContext.h"
16#include "llvm/Object/ELF.h"
17#include <optional>
18
19namespace lld::elf {
20
21class InputSection;
22
23struct LLDDWARFSection final : public llvm::DWARFSection {
24 InputSectionBase *sec = nullptr;
25};
26
27template <class ELFT> class LLDDwarfObj final : public llvm::DWARFObject {
28public:
29 explicit LLDDwarfObj(ObjFile<ELFT> *obj);
30
31 void forEachInfoSections(
32 llvm::function_ref<void(const llvm::DWARFSection &)> f) const override {
33 f(infoSection);
34 }
35
36 InputSection *getInfoSection() const {
37 return cast<InputSection>(Val: infoSection.sec);
38 }
39
40 const llvm::DWARFSection &getAddrSection() const override {
41 return addrSection;
42 }
43 const llvm::DWARFSection &getLineSection() const override {
44 return lineSection;
45 }
46 const llvm::DWARFSection &getLoclistsSection() const override {
47 return loclistsSection;
48 }
49 const llvm::DWARFSection &getRangesSection() const override {
50 return rangesSection;
51 }
52 const llvm::DWARFSection &getRnglistsSection() const override {
53 return rnglistsSection;
54 }
55 const llvm::DWARFSection &getStrOffsetsSection() const override {
56 return strOffsetsSection;
57 }
58
59 const LLDDWARFSection &getGnuPubnamesSection() const override {
60 return gnuPubnamesSection;
61 }
62 const LLDDWARFSection &getGnuPubtypesSection() const override {
63 return gnuPubtypesSection;
64 }
65 const LLDDWARFSection &getNamesSection() const override {
66 return namesSection;
67 }
68
69 StringRef getFileName() const override { return ""; }
70 StringRef getAbbrevSection() const override { return abbrevSection; }
71 StringRef getStrSection() const override { return strSection; }
72 StringRef getLineStrSection() const override { return lineStrSection; }
73
74 bool isLittleEndian() const override {
75 return ELFT::Endianness == llvm::endianness::little;
76 }
77
78 std::optional<llvm::RelocAddrEntry> find(const llvm::DWARFSection &sec,
79 uint64_t pos) const override;
80
81private:
82 template <class RelTy>
83 std::optional<llvm::RelocAddrEntry> findAux(const InputSectionBase &sec,
84 uint64_t pos,
85 ArrayRef<RelTy> rels) const;
86
87 LLDDWARFSection addrSection;
88 LLDDWARFSection gnuPubnamesSection;
89 LLDDWARFSection gnuPubtypesSection;
90 LLDDWARFSection infoSection;
91 LLDDWARFSection lineSection;
92 LLDDWARFSection loclistsSection;
93 LLDDWARFSection namesSection;
94 LLDDWARFSection rangesSection;
95 LLDDWARFSection rnglistsSection;
96 LLDDWARFSection strOffsetsSection;
97 StringRef abbrevSection;
98 StringRef lineStrSection;
99 StringRef strSection;
100};
101
102} // namespace lld::elf
103
104#endif
105

source code of lld/ELF/DWARF.h