125 lines
3.5 KiB
C++
125 lines
3.5 KiB
C++
//===- Range.cpp ------------------------------------------------*- 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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#include "llvm/DebugInfo/GSYM/Range.h"
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#include "llvm/DebugInfo/GSYM/FileWriter.h"
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#include "llvm/Support/DataExtractor.h"
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#include <algorithm>
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#include <inttypes.h>
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using namespace llvm;
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using namespace gsym;
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void AddressRanges::insert(AddressRange Range) {
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if (Range.size() == 0)
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return;
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auto It = llvm::upper_bound(Ranges, Range);
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auto It2 = It;
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while (It2 != Ranges.end() && It2->Start < Range.End)
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++It2;
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if (It != It2) {
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Range.End = std::max(Range.End, It2[-1].End);
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It = Ranges.erase(It, It2);
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}
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if (It != Ranges.begin() && Range.Start < It[-1].End)
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It[-1].End = std::max(It[-1].End, Range.End);
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else
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Ranges.insert(It, Range);
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}
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bool AddressRanges::contains(uint64_t Addr) const {
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auto It = std::partition_point(
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Ranges.begin(), Ranges.end(),
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[=](const AddressRange &R) { return R.Start <= Addr; });
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return It != Ranges.begin() && Addr < It[-1].End;
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}
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bool AddressRanges::contains(AddressRange Range) const {
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if (Range.size() == 0)
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return false;
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auto It = std::partition_point(
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Ranges.begin(), Ranges.end(),
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[=](const AddressRange &R) { return R.Start <= Range.Start; });
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if (It == Ranges.begin())
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return false;
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return Range.End <= It[-1].End;
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}
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Optional<AddressRange>
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AddressRanges::getRangeThatContains(uint64_t Addr) const {
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auto It = std::partition_point(
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Ranges.begin(), Ranges.end(),
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[=](const AddressRange &R) { return R.Start <= Addr; });
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if (It != Ranges.begin() && Addr < It[-1].End)
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return It[-1];
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return llvm::None;
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}
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raw_ostream &llvm::gsym::operator<<(raw_ostream &OS, const AddressRange &R) {
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return OS << '[' << HEX64(R.Start) << " - " << HEX64(R.End) << ")";
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}
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raw_ostream &llvm::gsym::operator<<(raw_ostream &OS, const AddressRanges &AR) {
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size_t Size = AR.size();
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for (size_t I = 0; I < Size; ++I) {
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if (I)
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OS << ' ';
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OS << AR[I];
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}
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return OS;
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}
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void AddressRange::encode(FileWriter &O, uint64_t BaseAddr) const {
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assert(Start >= BaseAddr);
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O.writeULEB(Start - BaseAddr);
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O.writeULEB(size());
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}
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void AddressRange::decode(DataExtractor &Data, uint64_t BaseAddr,
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uint64_t &Offset) {
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const uint64_t AddrOffset = Data.getULEB128(&Offset);
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const uint64_t Size = Data.getULEB128(&Offset);
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const uint64_t StartAddr = BaseAddr + AddrOffset;
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Start = StartAddr;
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End = StartAddr + Size;
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}
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void AddressRanges::encode(FileWriter &O, uint64_t BaseAddr) const {
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O.writeULEB(Ranges.size());
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if (Ranges.empty())
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return;
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for (auto Range : Ranges)
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Range.encode(O, BaseAddr);
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}
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void AddressRanges::decode(DataExtractor &Data, uint64_t BaseAddr,
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uint64_t &Offset) {
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clear();
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uint64_t NumRanges = Data.getULEB128(&Offset);
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if (NumRanges == 0)
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return;
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Ranges.resize(NumRanges);
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for (auto &Range : Ranges)
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Range.decode(Data, BaseAddr, Offset);
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}
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void AddressRange::skip(DataExtractor &Data, uint64_t &Offset) {
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Data.getULEB128(&Offset);
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Data.getULEB128(&Offset);
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}
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uint64_t AddressRanges::skip(DataExtractor &Data, uint64_t &Offset) {
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uint64_t NumRanges = Data.getULEB128(&Offset);
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for (uint64_t I=0; I<NumRanges; ++I)
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AddressRange::skip(Data, Offset);
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return NumRanges;
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}
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