1 //===- tools/dsymutil/DebugMap.cpp - Generic debug map representation -----===// 2 // 3 // The LLVM Linker 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 #include "DebugMap.h" 10 #include "llvm/ADT/STLExtras.h" 11 #include "llvm/ADT/iterator_range.h" 12 #include "llvm/Support/DataTypes.h" 13 #include "llvm/Support/Format.h" 14 #include "llvm/Support/raw_ostream.h" 15 #include <algorithm> 16 17 namespace llvm { 18 namespace dsymutil { 19 20 using namespace llvm::object; 21 22 DebugMapObject::DebugMapObject(StringRef ObjectFilename) 23 : Filename(ObjectFilename) {} 24 25 bool DebugMapObject::addSymbol(StringRef Name, uint64_t ObjectAddress, 26 uint64_t LinkedAddress, uint32_t Size) { 27 auto InsertResult = Symbols.insert( 28 std::make_pair(Name, SymbolMapping(ObjectAddress, LinkedAddress, Size))); 29 30 if (InsertResult.second) 31 AddressToMapping[ObjectAddress] = &*InsertResult.first; 32 return InsertResult.second; 33 } 34 35 void DebugMapObject::print(raw_ostream &OS) const { 36 OS << getObjectFilename() << ":\n"; 37 // Sort the symbols in alphabetical order, like llvm-nm (and to get 38 // deterministic output for testing). 39 typedef std::pair<StringRef, SymbolMapping> Entry; 40 std::vector<Entry> Entries; 41 Entries.reserve(Symbols.getNumItems()); 42 for (const auto &Sym : make_range(Symbols.begin(), Symbols.end())) 43 Entries.push_back(std::make_pair(Sym.getKey(), Sym.getValue())); 44 std::sort( 45 Entries.begin(), Entries.end(), 46 [](const Entry &LHS, const Entry &RHS) { return LHS.first < RHS.first; }); 47 for (const auto &Sym : Entries) { 48 OS << format("\t%016" PRIx64 " => %016" PRIx64 "+0x%x\t%s\n", 49 Sym.second.ObjectAddress, Sym.second.BinaryAddress, 50 Sym.second.Size, Sym.first.data()); 51 } 52 OS << '\n'; 53 } 54 55 #ifndef NDEBUG 56 void DebugMapObject::dump() const { print(errs()); } 57 #endif 58 59 DebugMapObject &DebugMap::addDebugMapObject(StringRef ObjectFilePath) { 60 Objects.emplace_back(new DebugMapObject(ObjectFilePath)); 61 return *Objects.back(); 62 } 63 64 const DebugMapObject::DebugMapEntry * 65 DebugMapObject::lookupSymbol(StringRef SymbolName) const { 66 StringMap<SymbolMapping>::const_iterator Sym = Symbols.find(SymbolName); 67 if (Sym == Symbols.end()) 68 return nullptr; 69 return &*Sym; 70 } 71 72 const DebugMapObject::DebugMapEntry * 73 DebugMapObject::lookupObjectAddress(uint64_t Address) const { 74 auto Mapping = AddressToMapping.find(Address); 75 if (Mapping == AddressToMapping.end()) 76 return nullptr; 77 return Mapping->getSecond(); 78 } 79 80 void DebugMap::print(raw_ostream &OS) const { 81 OS << "DEBUG MAP: " << BinaryTriple.getTriple() 82 << "\n\tobject addr => executable addr\tsymbol name\n"; 83 for (const auto &Obj : objects()) 84 Obj->print(OS); 85 OS << "END DEBUG MAP\n"; 86 } 87 88 #ifndef NDEBUG 89 void DebugMap::dump() const { print(errs()); } 90 #endif 91 } 92 } 93
