| 1 | //===- DWARFFile.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_DWARFLINKER_DWARFFILE_H |
| 10 | #define LLVM_DWARFLINKER_DWARFFILE_H |
| 11 | |
| 12 | #include "AddressesMap.h" |
| 13 | #include "llvm/ADT/StringRef.h" |
| 14 | #include "llvm/DebugInfo/DWARF/DWARFContext.h" |
| 15 | #include <functional> |
| 16 | #include <memory> |
| 17 | |
| 18 | namespace llvm { |
| 19 | namespace dwarf_linker { |
| 20 | |
| 21 | /// This class represents DWARF information for source file |
| 22 | /// and it's address map. |
| 23 | /// |
| 24 | /// May be used asynchroniously for reading. |
| 25 | class DWARFFile { |
| 26 | public: |
| 27 | using UnloadCallbackTy = std::function<void(StringRef FileName)>; |
| 28 | |
| 29 | DWARFFile(StringRef Name, std::unique_ptr<DWARFContext> Dwarf, |
| 30 | std::unique_ptr<AddressesMap> Addresses, |
| 31 | UnloadCallbackTy UnloadFunc = nullptr) |
| 32 | : FileName(Name), Dwarf(std::move(Dwarf)), |
| 33 | Addresses(std::move(Addresses)), UnloadFunc(UnloadFunc) {} |
| 34 | |
| 35 | /// Object file name. |
| 36 | StringRef FileName; |
| 37 | |
| 38 | /// Source DWARF information. |
| 39 | std::unique_ptr<DWARFContext> Dwarf; |
| 40 | |
| 41 | /// Helpful address information(list of valid address ranges, relocations). |
| 42 | std::unique_ptr<AddressesMap> Addresses; |
| 43 | |
| 44 | /// Callback to the module keeping object file to unload. |
| 45 | UnloadCallbackTy UnloadFunc; |
| 46 | |
| 47 | /// Unloads object file and corresponding AddressesMap and Dwarf Context. |
| 48 | void unload() { |
| 49 | Addresses.reset(); |
| 50 | Dwarf.reset(); |
| 51 | |
| 52 | if (UnloadFunc) |
| 53 | UnloadFunc(FileName); |
| 54 | } |
| 55 | }; |
| 56 | |
| 57 | } // namespace dwarf_linker |
| 58 | } // end namespace llvm |
| 59 | |
| 60 | #endif // LLVM_DWARFLINKER_DWARFFILE_H |
| 61 |