| //===- DWARFDebugAranges.h --------------------------------------*- C++ -*-===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef LLVM_DEBUGINFO_DWARFDEBUGARANGES_H |
| #define LLVM_DEBUGINFO_DWARFDEBUGARANGES_H |
| |
| #include "llvm/ADT/DenseSet.h" |
| #include "llvm/Support/DataExtractor.h" |
| #include <cstdint> |
| #include <vector> |
| |
| namespace llvm { |
| |
| class DWARFContext; |
| |
| class DWARFDebugAranges { |
| public: |
| void generate(DWARFContext *CTX); |
| uint64_t findAddress(uint64_t Address) const; |
| |
| private: |
| void clear(); |
| void extract(DataExtractor DebugArangesData); |
| |
| /// Call appendRange multiple times and then call construct. |
| void appendRange(uint64_t CUOffset, uint64_t LowPC, uint64_t HighPC); |
| void construct(); |
| |
| struct Range { |
| explicit Range(uint64_t LowPC = -1ULL, uint64_t HighPC = -1ULL, |
| uint64_t CUOffset = -1ULL) |
| : LowPC(LowPC), Length(HighPC - LowPC), CUOffset(CUOffset) {} |
| |
| void setHighPC(uint64_t HighPC) { |
| if (HighPC == -1ULL || HighPC <= LowPC) |
| Length = 0; |
| else |
| Length = HighPC - LowPC; |
| } |
| |
| uint64_t HighPC() const { |
| if (Length) |
| return LowPC + Length; |
| return -1ULL; |
| } |
| |
| bool operator<(const Range &other) const { |
| return LowPC < other.LowPC; |
| } |
| |
| uint64_t LowPC; /// Start of address range. |
| uint64_t Length; /// End of address range (not including this address). |
| uint64_t CUOffset; /// Offset of the compile unit or die. |
| }; |
| |
| struct RangeEndpoint { |
| uint64_t Address; |
| uint64_t CUOffset; |
| bool IsRangeStart; |
| |
| RangeEndpoint(uint64_t Address, uint64_t CUOffset, bool IsRangeStart) |
| : Address(Address), CUOffset(CUOffset), IsRangeStart(IsRangeStart) {} |
| |
| bool operator<(const RangeEndpoint &Other) const { |
| return Address < Other.Address; |
| } |
| }; |
| |
| using RangeColl = std::vector<Range>; |
| using RangeCollIterator = RangeColl::const_iterator; |
| |
| std::vector<RangeEndpoint> Endpoints; |
| RangeColl Aranges; |
| DenseSet<uint64_t> ParsedCUOffsets; |
| }; |
| |
| } // end namespace llvm |
| |
| #endif // LLVM_DEBUGINFO_DWARFDEBUGARANGES_H |