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| //===- 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);
uint32_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,
uint32_t CUOffset = -1U)
: 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.
uint32_t Length; /// End of address range (not including this address).
uint32_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
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