21 void DWARFDebugAranges::extract(
DataExtractor DebugArangesData) {
27 while (Set.
extract(DebugArangesData, &Offset)) {
30 uint64_t LowPC = Desc.Address;
31 uint64_t HighPC = Desc.getEndAddress();
32 appendRange(CUOffset, LowPC, HighPC);
34 ParsedCUOffsets.
insert(CUOffset);
51 uint32_t CUOffset = CU->getOffset();
52 if (ParsedCUOffsets.
insert(CUOffset).second) {
54 CU->collectAddressRanges(CURanges);
55 for (
const auto &R : CURanges) {
56 appendRange(CUOffset, R.first, R.second);
64 void DWARFDebugAranges::clear() {
67 ParsedCUOffsets.
clear();
70 void DWARFDebugAranges::appendRange(uint32_t CUOffset, uint64_t LowPC,
74 Endpoints.emplace_back(LowPC, CUOffset,
true);
75 Endpoints.emplace_back(HighPC, CUOffset,
false);
78 void DWARFDebugAranges::construct() {
79 std::multiset<uint32_t> ValidCUs;
81 std::sort(Endpoints.begin(), Endpoints.end());
82 uint64_t PrevAddress = -1ULL;
83 for (
const auto &E : Endpoints) {
84 if (PrevAddress < E.Address && ValidCUs.size() > 0) {
88 if (!Aranges.empty() && Aranges.back().HighPC() == PrevAddress &&
89 ValidCUs.find(Aranges.back().CUOffset) != ValidCUs.end()) {
90 Aranges.back().setHighPC(E.Address);
92 Aranges.emplace_back(PrevAddress, E.Address, *ValidCUs.begin());
97 ValidCUs.insert(E.CUOffset);
99 auto CUPos = ValidCUs.find(E.CUOffset);
100 assert(CUPos != ValidCUs.end());
101 ValidCUs.erase(CUPos);
103 PrevAddress = E.Address;
105 assert(ValidCUs.empty());
108 std::vector<RangeEndpoint> EmptyEndpoints;
109 EmptyEndpoints.swap(Endpoints);
113 if (!Aranges.empty()) {
114 Range range(Address);
115 RangeCollIterator
begin = Aranges.begin();
116 RangeCollIterator
end = Aranges.end();
117 RangeCollIterator pos =
118 std::lower_bound(begin, end, range);
120 if (pos != end && pos->containsAddress(Address)) {
121 return pos->CUOffset;
122 }
else if (pos != begin) {
124 if (pos->containsAddress(Address))
125 return pos->CUOffset;
const_iterator end(StringRef path)
Get end iterator over path.
desc_iterator_range descriptors() const
std::vector< std::pair< uint64_t, uint64_t > > DWARFAddressRangesVector
DWARFAddressRangesVector - represents a set of absolute address ranges.
const_iterator begin(StringRef path)
Get begin iterator over path.
void generate(DWARFContext *CTX)
std::pair< iterator, bool > insert(const ValueT &V)
bool extract(DataExtractor data, uint32_t *offset_ptr)
DWARFContext This data structure is the top level entity that deals with dwarf debug information pars...
cu_iterator_range compile_units()
Get compile units in this context.
virtual StringRef getARangeSection()=0
uint32_t findAddress(uint64_t Address) const
uint32_t getCompileUnitDIEOffset() const
virtual bool isLittleEndian() const =0