1 //===- DWARFObject.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 LLVM_DEBUGINFO_DWARF_DWARFOBJECT_H 10 #define LLVM_DEBUGINFO_DWARF_DWARFOBJECT_H 11 12 #include "llvm/DebugInfo/DWARF/DWARFRelocMap.h" 13 #include "llvm/DebugInfo/DWARF/DWARFSection.h" 14 #include "llvm/Object/ObjectFile.h" 15 16 namespace llvm { 17 // This is responsible for low level access to the object file. It 18 // knows how to find the required sections and compute relocated 19 // values. 20 // The default implementations of the get<Section> methods return dummy values. 21 // This is to allow clients that only need some of those to implement just the 22 // ones they need. We can't use unreachable for as many cases because the parser 23 // implementation is eager and will call some of these methods even if the 24 // result is not used. 25 class DWARFObject { 26 DWARFSection Dummy; 27 28 public: 29 virtual ~DWARFObject() = default; 30 virtual StringRef getFileName() const { llvm_unreachable("unimplemented"); } 31 virtual const object::ObjectFile *getFile() const { return nullptr; } 32 virtual ArrayRef<SectionName> getSectionNames() const { return {}; } 33 virtual bool isLittleEndian() const = 0; 34 virtual uint8_t getAddressSize() const { llvm_unreachable("unimplemented"); } 35 virtual void 36 forEachInfoSections(function_ref<void(const DWARFSection &)> F) const {} 37 virtual void 38 forEachTypesSections(function_ref<void(const DWARFSection &)> F) const {} 39 virtual StringRef getAbbrevSection() const { return ""; } 40 virtual const DWARFSection &getLocSection() const { return Dummy; } 41 virtual const DWARFSection &getLoclistsSection() const { return Dummy; } 42 virtual StringRef getArangesSection() const { return ""; } 43 virtual const DWARFSection &getFrameSection() const { return Dummy; } 44 virtual const DWARFSection &getEHFrameSection() const { return Dummy; } 45 virtual const DWARFSection &getLineSection() const { return Dummy; } 46 virtual StringRef getLineStrSection() const { return ""; } 47 virtual StringRef getStrSection() const { return ""; } 48 virtual const DWARFSection &getRangesSection() const { return Dummy; } 49 virtual const DWARFSection &getRnglistsSection() const { return Dummy; } 50 virtual StringRef getMacinfoSection() const { return ""; } 51 virtual StringRef getMacinfoDWOSection() const { return ""; } 52 virtual const DWARFSection &getPubnamesSection() const { return Dummy; } 53 virtual const DWARFSection &getPubtypesSection() const { return Dummy; } 54 virtual const DWARFSection &getGnuPubnamesSection() const { return Dummy; } 55 virtual const DWARFSection &getGnuPubtypesSection() const { return Dummy; } 56 virtual const DWARFSection &getStrOffsetsSection() const { return Dummy; } 57 virtual void 58 forEachInfoDWOSections(function_ref<void(const DWARFSection &)> F) const {} 59 virtual void 60 forEachTypesDWOSections(function_ref<void(const DWARFSection &)> F) const {} 61 virtual StringRef getAbbrevDWOSection() const { return ""; } 62 virtual const DWARFSection &getLineDWOSection() const { return Dummy; } 63 virtual const DWARFSection &getLocDWOSection() const { return Dummy; } 64 virtual const DWARFSection &getLoclistsDWOSection() const { return Dummy; } 65 virtual StringRef getStrDWOSection() const { return ""; } 66 virtual const DWARFSection &getStrOffsetsDWOSection() const { 67 return Dummy; 68 } 69 virtual const DWARFSection &getRangesDWOSection() const { return Dummy; } 70 virtual const DWARFSection &getRnglistsDWOSection() const { return Dummy; } 71 virtual const DWARFSection &getAddrSection() const { return Dummy; } 72 virtual const DWARFSection &getAppleNamesSection() const { return Dummy; } 73 virtual const DWARFSection &getAppleTypesSection() const { return Dummy; } 74 virtual const DWARFSection &getAppleNamespacesSection() const { 75 return Dummy; 76 } 77 virtual const DWARFSection &getNamesSection() const { return Dummy; } 78 virtual const DWARFSection &getAppleObjCSection() const { return Dummy; } 79 virtual StringRef getCUIndexSection() const { return ""; } 80 virtual StringRef getGdbIndexSection() const { return ""; } 81 virtual StringRef getTUIndexSection() const { return ""; } 82 virtual Optional<RelocAddrEntry> find(const DWARFSection &Sec, 83 uint64_t Pos) const = 0; 84 }; 85 86 } // namespace llvm 87 #endif 88