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| Rev | Author | Line No. | Line |
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| 14 | pmbaty | 1 | //===- DWARFDebugPubTable.h -------------------------------------*- C++ -*-===// |
| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | |||
| 9 | #ifndef LLVM_DEBUGINFO_DWARF_DWARFDEBUGPUBTABLE_H |
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| 10 | #define LLVM_DEBUGINFO_DWARF_DWARFDEBUGPUBTABLE_H |
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| 11 | |||
| 12 | #include "llvm/ADT/ArrayRef.h" |
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| 13 | #include "llvm/ADT/STLFunctionalExtras.h" |
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| 14 | #include "llvm/ADT/StringRef.h" |
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| 15 | #include "llvm/BinaryFormat/Dwarf.h" |
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| 16 | #include <cstdint> |
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| 17 | #include <vector> |
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| 18 | |||
| 19 | namespace llvm { |
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| 20 | |||
| 21 | class raw_ostream; |
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| 22 | class DWARFDataExtractor; |
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| 23 | class Error; |
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| 24 | |||
| 25 | /// Represents structure for holding and parsing .debug_pub* tables. |
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| 26 | class DWARFDebugPubTable { |
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| 27 | public: |
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| 28 | struct Entry { |
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| 29 | /// Section offset from the beginning of the compilation unit. |
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| 30 | uint64_t SecOffset; |
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| 31 | |||
| 32 | /// An entry of the various gnu_pub* debug sections. |
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| 33 | dwarf::PubIndexEntryDescriptor Descriptor; |
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| 34 | |||
| 35 | /// The name of the object as given by the DW_AT_name attribute of the |
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| 36 | /// referenced DIE. |
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| 37 | StringRef Name; |
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| 38 | }; |
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| 39 | |||
| 40 | /// Each table consists of sets of variable length entries. Each set describes |
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| 41 | /// the names of global objects and functions, or global types, respectively, |
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| 42 | /// whose definitions are represented by debugging information entries owned |
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| 43 | /// by a single compilation unit. |
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| 44 | struct Set { |
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| 45 | /// The total length of the entries for that set, not including the length |
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| 46 | /// field itself. |
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| 47 | uint64_t Length; |
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| 48 | |||
| 49 | /// The DWARF format of the set. |
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| 50 | dwarf::DwarfFormat Format; |
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| 51 | |||
| 52 | /// This number is specific to the name lookup table and is independent of |
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| 53 | /// the DWARF version number. |
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| 54 | uint16_t Version; |
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| 55 | |||
| 56 | /// The offset from the beginning of the .debug_info section of the |
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| 57 | /// compilation unit header referenced by the set. |
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| 58 | uint64_t Offset; |
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| 59 | |||
| 60 | /// The size in bytes of the contents of the .debug_info section generated |
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| 61 | /// to represent that compilation unit. |
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| 62 | uint64_t Size; |
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| 63 | |||
| 64 | std::vector<Entry> Entries; |
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| 65 | }; |
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| 66 | |||
| 67 | private: |
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| 68 | std::vector<Set> Sets; |
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| 69 | |||
| 70 | /// gnu styled tables contains additional information. |
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| 71 | /// This flag determines whether or not section we parse is debug_gnu* table. |
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| 72 | bool GnuStyle = false; |
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| 73 | |||
| 74 | public: |
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| 75 | DWARFDebugPubTable() = default; |
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| 76 | |||
| 77 | void extract(DWARFDataExtractor Data, bool GnuStyle, |
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| 78 | function_ref<void(Error)> RecoverableErrorHandler); |
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| 79 | |||
| 80 | void dump(raw_ostream &OS) const; |
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| 81 | |||
| 82 | ArrayRef<Set> getData() { return Sets; } |
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| 83 | }; |
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| 84 | |||
| 85 | } // end namespace llvm |
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| 86 | |||
| 87 | #endif // LLVM_DEBUGINFO_DWARF_DWARFDEBUGPUBTABLE_H |