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| Rev | Author | Line No. | Line |
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| 14 | pmbaty | 1 | //===- DWARFDebugAranges.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_DWARFDEBUGARANGES_H |
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| 10 | #define LLVM_DEBUGINFO_DWARF_DWARFDEBUGARANGES_H |
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| 11 | |||
| 12 | #include "llvm/ADT/DenseSet.h" |
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| 13 | #include "llvm/ADT/STLFunctionalExtras.h" |
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| 14 | #include <cstdint> |
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| 15 | #include <vector> |
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| 16 | |||
| 17 | namespace llvm { |
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| 18 | class DWARFDataExtractor; |
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| 19 | class Error; |
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| 20 | |||
| 21 | class DWARFContext; |
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| 22 | |||
| 23 | class DWARFDebugAranges { |
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| 24 | public: |
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| 25 | void generate(DWARFContext *CTX); |
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| 26 | uint64_t findAddress(uint64_t Address) const; |
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| 27 | |||
| 28 | private: |
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| 29 | void clear(); |
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| 30 | void extract(DWARFDataExtractor DebugArangesData, |
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| 31 | function_ref<void(Error)> RecoverableErrorHandler, |
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| 32 | function_ref<void(Error)> WarningHandler); |
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| 33 | |||
| 34 | /// Call appendRange multiple times and then call construct. |
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| 35 | void appendRange(uint64_t CUOffset, uint64_t LowPC, uint64_t HighPC); |
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| 36 | void construct(); |
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| 37 | |||
| 38 | struct Range { |
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| 39 | explicit Range(uint64_t LowPC, uint64_t HighPC, uint64_t CUOffset) |
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| 40 | : LowPC(LowPC), Length(HighPC - LowPC), CUOffset(CUOffset) {} |
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| 41 | |||
| 42 | void setHighPC(uint64_t HighPC) { |
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| 43 | if (HighPC == -1ULL || HighPC <= LowPC) |
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| 44 | Length = 0; |
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| 45 | else |
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| 46 | Length = HighPC - LowPC; |
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| 47 | } |
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| 48 | |||
| 49 | uint64_t HighPC() const { |
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| 50 | if (Length) |
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| 51 | return LowPC + Length; |
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| 52 | return -1ULL; |
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| 53 | } |
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| 54 | |||
| 55 | bool operator<(const Range &other) const { |
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| 56 | return LowPC < other.LowPC; |
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| 57 | } |
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| 58 | |||
| 59 | uint64_t LowPC; /// Start of address range. |
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| 60 | uint64_t Length; /// End of address range (not including this address). |
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| 61 | uint64_t CUOffset; /// Offset of the compile unit or die. |
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| 62 | }; |
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| 63 | |||
| 64 | struct RangeEndpoint { |
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| 65 | uint64_t Address; |
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| 66 | uint64_t CUOffset; |
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| 67 | bool IsRangeStart; |
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| 68 | |||
| 69 | RangeEndpoint(uint64_t Address, uint64_t CUOffset, bool IsRangeStart) |
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| 70 | : Address(Address), CUOffset(CUOffset), IsRangeStart(IsRangeStart) {} |
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| 71 | |||
| 72 | bool operator<(const RangeEndpoint &Other) const { |
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| 73 | return Address < Other.Address; |
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| 74 | } |
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| 75 | }; |
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| 76 | |||
| 77 | using RangeColl = std::vector<Range>; |
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| 78 | using RangeCollIterator = RangeColl::const_iterator; |
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| 79 | |||
| 80 | std::vector<RangeEndpoint> Endpoints; |
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| 81 | RangeColl Aranges; |
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| 82 | DenseSet<uint64_t> ParsedCUOffsets; |
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| 83 | }; |
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| 84 | |||
| 85 | } // end namespace llvm |
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| 86 | |||
| 87 | #endif // LLVM_DEBUGINFO_DWARF_DWARFDEBUGARANGES_H |