forked from OSchip/llvm-project
88 lines
2.3 KiB
C++
88 lines
2.3 KiB
C++
//===-- DWARFDebugAranges.h -------------------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_DEBUGINFO_DWARFDEBUGARANGES_H
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#define LLVM_DEBUGINFO_DWARFDEBUGARANGES_H
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#include "llvm/ADT/DenseSet.h"
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#include "llvm/Support/DataExtractor.h"
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#include <vector>
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namespace llvm {
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class DWARFContext;
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class DWARFDebugAranges {
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public:
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void generate(DWARFContext *CTX);
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uint32_t findAddress(uint64_t Address) const;
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private:
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void clear();
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void extract(DataExtractor DebugArangesData);
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// Call appendRange multiple times and then call construct.
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void appendRange(uint32_t CUOffset, uint64_t LowPC, uint64_t HighPC);
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void construct();
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struct Range {
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explicit Range(uint64_t LowPC = -1ULL, uint64_t HighPC = -1ULL,
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uint32_t CUOffset = -1U)
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: LowPC(LowPC), Length(HighPC - LowPC), CUOffset(CUOffset) {}
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void setHighPC(uint64_t HighPC) {
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if (HighPC == -1ULL || HighPC <= LowPC)
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Length = 0;
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else
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Length = HighPC - LowPC;
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}
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uint64_t HighPC() const {
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if (Length)
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return LowPC + Length;
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return -1ULL;
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}
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bool containsAddress(uint64_t Address) const {
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return LowPC <= Address && Address < HighPC();
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}
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bool operator<(const Range &other) const {
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return LowPC < other.LowPC;
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}
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uint64_t LowPC; // Start of address range.
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uint32_t Length; // End of address range (not including this address).
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uint32_t CUOffset; // Offset of the compile unit or die.
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};
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struct RangeEndpoint {
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uint64_t Address;
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uint32_t CUOffset;
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bool IsRangeStart;
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RangeEndpoint(uint64_t Address, uint32_t CUOffset, bool IsRangeStart)
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: Address(Address), CUOffset(CUOffset), IsRangeStart(IsRangeStart) {}
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bool operator<(const RangeEndpoint &Other) const {
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return Address < Other.Address;
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}
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};
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typedef std::vector<Range> RangeColl;
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typedef RangeColl::const_iterator RangeCollIterator;
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std::vector<RangeEndpoint> Endpoints;
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RangeColl Aranges;
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DenseSet<uint32_t> ParsedCUOffsets;
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};
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}
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#endif
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