| Andrew Scull | 5e1ddfa | 2018-08-14 10:06:54 +0100 | [diff] [blame^] | 1 | //===- DWARFObject.h --------------------------------------------*- C++ -*-===// |
| 2 | // |
| 3 | // The LLVM Compiler Infrastructure |
| 4 | // |
| 5 | // This file is distributed under the University of Illinois Open Source |
| 6 | // License. See LICENSE.TXT for details. |
| 7 | // |
| 8 | //===-----------------------------------------------------------------------===/ |
| 9 | |
| 10 | #ifndef LLVM_DEBUGINFO_DWARF_DWARFOBJECT_H |
| 11 | #define LLVM_DEBUGINFO_DWARF_DWARFOBJECT_H |
| 12 | |
| 13 | #include "llvm/DebugInfo/DWARF/DWARFRelocMap.h" |
| 14 | #include "llvm/DebugInfo/DWARF/DWARFSection.h" |
| 15 | #include "llvm/Object/ObjectFile.h" |
| 16 | |
| 17 | namespace llvm { |
| 18 | // This is responsible for low level access to the object file. It |
| 19 | // knows how to find the required sections and compute relocated |
| 20 | // values. |
| 21 | // The default implementations of the get<Section> methods return dummy values. |
| 22 | // This is to allow clients that only need some of those to implement just the |
| 23 | // ones they need. We can't use unreachable for as many cases because the parser |
| 24 | // implementation is eager and will call some of these methods even if the |
| 25 | // result is not used. |
| 26 | class DWARFObject { |
| 27 | DWARFSection Dummy; |
| 28 | |
| 29 | public: |
| 30 | virtual ~DWARFObject() = default; |
| 31 | virtual StringRef getFileName() const { llvm_unreachable("unimplemented"); } |
| 32 | virtual const object::ObjectFile *getFile() const { return nullptr; } |
| 33 | virtual ArrayRef<SectionName> getSectionNames() const { return {}; } |
| 34 | virtual bool isLittleEndian() const = 0; |
| 35 | virtual uint8_t getAddressSize() const { llvm_unreachable("unimplemented"); } |
| 36 | virtual const DWARFSection &getInfoSection() const { return Dummy; } |
| 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 StringRef getARangeSection() const { return ""; } |
| 42 | virtual StringRef getDebugFrameSection() const { return ""; } |
| 43 | virtual StringRef getEHFrameSection() const { return ""; } |
| 44 | virtual const DWARFSection &getLineSection() const { return Dummy; } |
| 45 | virtual StringRef getLineStringSection() const { return ""; } |
| 46 | virtual StringRef getStringSection() const { return ""; } |
| 47 | virtual const DWARFSection &getRangeSection() const { return Dummy; } |
| 48 | virtual const DWARFSection &getRnglistsSection() const { return Dummy; } |
| 49 | virtual StringRef getMacinfoSection() const { return ""; } |
| 50 | virtual StringRef getPubNamesSection() const { return ""; } |
| 51 | virtual StringRef getPubTypesSection() const { return ""; } |
| 52 | virtual StringRef getGnuPubNamesSection() const { return ""; } |
| 53 | virtual StringRef getGnuPubTypesSection() const { return ""; } |
| 54 | virtual const DWARFSection &getStringOffsetSection() const { return Dummy; } |
| 55 | virtual const DWARFSection &getInfoDWOSection() const { return Dummy; } |
| 56 | virtual void |
| 57 | forEachTypesDWOSections(function_ref<void(const DWARFSection &)> F) const {} |
| 58 | virtual StringRef getAbbrevDWOSection() const { return ""; } |
| 59 | virtual const DWARFSection &getLineDWOSection() const { return Dummy; } |
| 60 | virtual const DWARFSection &getLocDWOSection() const { return Dummy; } |
| 61 | virtual StringRef getStringDWOSection() const { return ""; } |
| 62 | virtual const DWARFSection &getStringOffsetDWOSection() const { |
| 63 | return Dummy; |
| 64 | } |
| 65 | virtual const DWARFSection &getRangeDWOSection() const { return Dummy; } |
| 66 | virtual const DWARFSection &getAddrSection() const { return Dummy; } |
| 67 | virtual const DWARFSection &getAppleNamesSection() const { return Dummy; } |
| 68 | virtual const DWARFSection &getAppleTypesSection() const { return Dummy; } |
| 69 | virtual const DWARFSection &getAppleNamespacesSection() const { |
| 70 | return Dummy; |
| 71 | } |
| 72 | virtual const DWARFSection &getDebugNamesSection() const { return Dummy; } |
| 73 | virtual const DWARFSection &getAppleObjCSection() const { return Dummy; } |
| 74 | virtual StringRef getCUIndexSection() const { return ""; } |
| 75 | virtual StringRef getGdbIndexSection() const { return ""; } |
| 76 | virtual StringRef getTUIndexSection() const { return ""; } |
| 77 | virtual Optional<RelocAddrEntry> find(const DWARFSection &Sec, |
| 78 | uint64_t Pos) const = 0; |
| 79 | }; |
| 80 | |
| 81 | } // namespace llvm |
| 82 | #endif |