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//===-- DWARFDebugAranges.h -------------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_DEBUGINFO_DWARFDEBUGARANGES_H
#define LLVM_DEBUGINFO_DWARFDEBUGARANGES_H
#include "DWARFDebugArangeSet.h"
#include "llvm/ADT/DenseSet.h"
#include <list>
namespace llvm {
class DWARFContext;
class DWARFDebugAranges {
public:
void clear() {
Aranges.clear();
ParsedCUOffsets.clear();
}
void generate(DWARFContext *CTX);
// Use appendRange multiple times and then call sortAndMinimize.
void appendRange(uint32_t CUOffset, uint64_t LowPC, uint64_t HighPC);
uint32_t findAddress(uint64_t Address) const;
private:
void extract(DataExtractor DebugArangesData);
void sortAndMinimize();
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 containsAddress(uint64_t Address) const {
return LowPC <= Address && Address < HighPC();
}
bool operator <(const Range &other) const {
return LowPC < other.LowPC;
}
static bool SortedOverlapCheck(const Range &Left, const Range &Right) {
if (Left.CUOffset != Right.CUOffset)
return false;
return Left.HighPC() >= Right.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.
};
typedef std::vector<Range> RangeColl;
typedef RangeColl::const_iterator RangeCollIterator;
typedef DenseSet<uint32_t> ParsedCUOffsetColl;
RangeColl Aranges;
ParsedCUOffsetColl ParsedCUOffsets;
};
}
#endif
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