1 //===- Symbol.cpp ---------------------------------------------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 // 9 // Implements the Symbol. 10 // 11 //===----------------------------------------------------------------------===// 12 13 #include "llvm/TextAPI/Symbol.h" 14 #include <string> 15 16 namespace llvm { 17 namespace MachO { 18 19 #if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP) 20 LLVM_DUMP_METHOD void Symbol::dump(raw_ostream &OS) const { 21 std::string Result; 22 if (isUndefined()) 23 Result += "(undef) "; 24 if (isWeakDefined()) 25 Result += "(weak-def) "; 26 if (isWeakReferenced()) 27 Result += "(weak-ref) "; 28 if (isThreadLocalValue()) 29 Result += "(tlv) "; 30 switch (Kind) { 31 case EncodeKind::GlobalSymbol: 32 Result += Name.str(); 33 break; 34 case EncodeKind::ObjectiveCClass: 35 Result += "(ObjC Class) " + Name.str(); 36 break; 37 case EncodeKind::ObjectiveCClassEHType: 38 Result += "(ObjC Class EH) " + Name.str(); 39 break; 40 case EncodeKind::ObjectiveCInstanceVariable: 41 Result += "(ObjC IVar) " + Name.str(); 42 break; 43 } 44 OS << Result; 45 } 46 #endif 47 48 Symbol::const_filtered_target_range 49 Symbol::targets(ArchitectureSet Architectures) const { 50 std::function<bool(const Target &)> FN = 51 [Architectures](const Target &Target) { 52 return Architectures.has(Target.Arch); 53 }; 54 return make_filter_range(Targets, FN); 55 } 56 57 bool Symbol::operator==(const Symbol &O) const { 58 // Older Tapi files do not express all these symbol flags. In those 59 // cases, ignore those differences. 60 auto RemoveFlag = [](const Symbol &Sym, SymbolFlags &Flag) { 61 if (Sym.isData()) 62 Flag &= ~SymbolFlags::Data; 63 if (Sym.isText()) 64 Flag &= ~SymbolFlags::Text; 65 }; 66 SymbolFlags LHSFlags = Flags; 67 SymbolFlags RHSFlags = O.Flags; 68 // Ignore Text and Data for now. 69 RemoveFlag(*this, LHSFlags); 70 RemoveFlag(O, RHSFlags); 71 return std::tie(Name, Kind, Targets, LHSFlags) == 72 std::tie(O.Name, O.Kind, O.Targets, RHSFlags); 73 } 74 75 SimpleSymbol parseSymbol(StringRef SymName) { 76 if (SymName.starts_with(ObjC1ClassNamePrefix)) 77 return {SymName.drop_front(ObjC1ClassNamePrefix.size()), 78 EncodeKind::ObjectiveCClass, ObjCIFSymbolKind::Class}; 79 if (SymName.starts_with(ObjC2ClassNamePrefix)) 80 return {SymName.drop_front(ObjC2ClassNamePrefix.size()), 81 EncodeKind::ObjectiveCClass, ObjCIFSymbolKind::Class}; 82 if (SymName.starts_with(ObjC2MetaClassNamePrefix)) 83 return {SymName.drop_front(ObjC2MetaClassNamePrefix.size()), 84 EncodeKind::ObjectiveCClass, ObjCIFSymbolKind::MetaClass}; 85 if (SymName.starts_with(ObjC2EHTypePrefix)) 86 return {SymName.drop_front(ObjC2EHTypePrefix.size()), 87 EncodeKind::ObjectiveCClassEHType, ObjCIFSymbolKind::EHType}; 88 if (SymName.starts_with(ObjC2IVarPrefix)) 89 return {SymName.drop_front(ObjC2IVarPrefix.size()), 90 EncodeKind::ObjectiveCInstanceVariable, ObjCIFSymbolKind::None}; 91 return {SymName, EncodeKind::GlobalSymbol, ObjCIFSymbolKind::None}; 92 } 93 94 } // end namespace MachO. 95 } // end namespace llvm. 96