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| Rev | Author | Line No. | Line |
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| 14 | pmbaty | 1 | //===- DebugChecksumsSubsection.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_CODEVIEW_DEBUGCHECKSUMSSUBSECTION_H |
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| 10 | #define LLVM_DEBUGINFO_CODEVIEW_DEBUGCHECKSUMSSUBSECTION_H |
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| 11 | |||
| 12 | #include "llvm/ADT/ArrayRef.h" |
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| 13 | #include "llvm/ADT/DenseMap.h" |
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| 14 | #include "llvm/ADT/StringRef.h" |
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| 15 | #include "llvm/DebugInfo/CodeView/CodeView.h" |
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| 16 | #include "llvm/DebugInfo/CodeView/DebugSubsection.h" |
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| 17 | #include "llvm/Support/Allocator.h" |
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| 18 | #include "llvm/Support/BinaryStreamArray.h" |
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| 19 | #include "llvm/Support/BinaryStreamRef.h" |
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| 20 | #include "llvm/Support/Error.h" |
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| 21 | #include <cstdint> |
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| 22 | #include <vector> |
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| 23 | |||
| 24 | namespace llvm { |
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| 25 | |||
| 26 | class BinaryStreamReader; |
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| 27 | class BinaryStreamWriter; |
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| 28 | |||
| 29 | namespace codeview { |
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| 30 | |||
| 31 | class DebugStringTableSubsection; |
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| 32 | |||
| 33 | struct FileChecksumEntry { |
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| 34 | uint32_t FileNameOffset; // Byte offset of filename in global stringtable. |
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| 35 | FileChecksumKind Kind; // The type of checksum. |
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| 36 | ArrayRef<uint8_t> Checksum; // The bytes of the checksum. |
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| 37 | }; |
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| 38 | |||
| 39 | } // end namespace codeview |
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| 40 | |||
| 41 | template <> struct VarStreamArrayExtractor<codeview::FileChecksumEntry> { |
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| 42 | public: |
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| 43 | using ContextType = void; |
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| 44 | |||
| 45 | Error operator()(BinaryStreamRef Stream, uint32_t &Len, |
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| 46 | codeview::FileChecksumEntry &Item); |
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| 47 | }; |
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| 48 | |||
| 49 | namespace codeview { |
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| 50 | |||
| 51 | class DebugChecksumsSubsectionRef final : public DebugSubsectionRef { |
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| 52 | using FileChecksumArray = VarStreamArray<codeview::FileChecksumEntry>; |
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| 53 | using Iterator = FileChecksumArray::Iterator; |
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| 54 | |||
| 55 | public: |
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| 56 | DebugChecksumsSubsectionRef() |
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| 57 | : DebugSubsectionRef(DebugSubsectionKind::FileChecksums) {} |
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| 58 | |||
| 59 | static bool classof(const DebugSubsectionRef *S) { |
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| 60 | return S->kind() == DebugSubsectionKind::FileChecksums; |
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| 61 | } |
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| 62 | |||
| 63 | bool valid() const { return Checksums.valid(); } |
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| 64 | |||
| 65 | Error initialize(BinaryStreamReader Reader); |
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| 66 | Error initialize(BinaryStreamRef Stream); |
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| 67 | |||
| 68 | Iterator begin() const { return Checksums.begin(); } |
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| 69 | Iterator end() const { return Checksums.end(); } |
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| 70 | |||
| 71 | const FileChecksumArray &getArray() const { return Checksums; } |
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| 72 | |||
| 73 | private: |
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| 74 | FileChecksumArray Checksums; |
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| 75 | }; |
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| 76 | |||
| 77 | class DebugChecksumsSubsection final : public DebugSubsection { |
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| 78 | public: |
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| 79 | explicit DebugChecksumsSubsection(DebugStringTableSubsection &Strings); |
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| 80 | |||
| 81 | static bool classof(const DebugSubsection *S) { |
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| 82 | return S->kind() == DebugSubsectionKind::FileChecksums; |
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| 83 | } |
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| 84 | |||
| 85 | void addChecksum(StringRef FileName, FileChecksumKind Kind, |
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| 86 | ArrayRef<uint8_t> Bytes); |
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| 87 | |||
| 88 | uint32_t calculateSerializedSize() const override; |
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| 89 | Error commit(BinaryStreamWriter &Writer) const override; |
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| 90 | uint32_t mapChecksumOffset(StringRef FileName) const; |
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| 91 | |||
| 92 | private: |
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| 93 | DebugStringTableSubsection &Strings; |
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| 94 | |||
| 95 | DenseMap<uint32_t, uint32_t> OffsetMap; |
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| 96 | uint32_t SerializedSize = 0; |
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| 97 | BumpPtrAllocator Storage; |
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| 98 | std::vector<FileChecksumEntry> Checksums; |
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| 99 | }; |
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| 100 | |||
| 101 | } // end namespace codeview |
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| 102 | |||
| 103 | } // end namespace llvm |
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| 104 | |||
| 105 | #endif // LLVM_DEBUGINFO_CODEVIEW_DEBUGCHECKSUMSSUBSECTION_H |