1 //===-- llvm/CodeGen/MachineModuleInfoImpls.h -------------------*- C++ -*-===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // 10 // This file defines object-file format specific implementations of 11 // MachineModuleInfoImpl. 12 // 13 //===----------------------------------------------------------------------===// 14 15 #ifndef LLVM_CODEGEN_MACHINEMODULEINFOIMPLS_H 16 #define LLVM_CODEGEN_MACHINEMODULEINFOIMPLS_H 17 18 #include "llvm/CodeGen/MachineModuleInfo.h" 19 20 namespace llvm { 21 class MCSymbol; 22 23 /// MachineModuleInfoMachO - This is a MachineModuleInfoImpl implementation 24 /// for MachO targets. 25 class MachineModuleInfoMachO : public MachineModuleInfoImpl { 26 /// FnStubs - Darwin '$stub' stubs. The key is something like "Lfoo$stub", 27 /// the value is something like "_foo". 28 DenseMap<MCSymbol*, StubValueTy> FnStubs; 29 30 /// GVStubs - Darwin '$non_lazy_ptr' stubs. The key is something like 31 /// "Lfoo$non_lazy_ptr", the value is something like "_foo". The extra bit 32 /// is true if this GV is external. 33 DenseMap<MCSymbol*, StubValueTy> GVStubs; 34 35 /// HiddenGVStubs - Darwin '$non_lazy_ptr' stubs. The key is something like 36 /// "Lfoo$non_lazy_ptr", the value is something like "_foo". Unlike GVStubs 37 /// these are for things with hidden visibility. The extra bit is true if 38 /// this GV is external. 39 DenseMap<MCSymbol*, StubValueTy> HiddenGVStubs; 40 41 virtual void anchor(); // Out of line virtual method. 42 public: 43 MachineModuleInfoMachO(const MachineModuleInfo &) {} 44 45 StubValueTy &getFnStubEntry(MCSymbol *Sym) { 46 assert(Sym && "Key cannot be null"); 47 return FnStubs[Sym]; 48 } 49 50 StubValueTy &getGVStubEntry(MCSymbol *Sym) { 51 assert(Sym && "Key cannot be null"); 52 return GVStubs[Sym]; 53 } 54 55 StubValueTy &getHiddenGVStubEntry(MCSymbol *Sym) { 56 assert(Sym && "Key cannot be null"); 57 return HiddenGVStubs[Sym]; 58 } 59 60 /// Accessor methods to return the set of stubs in sorted order. 61 SymbolListTy GetFnStubList() const { 62 return GetSortedStubs(FnStubs); 63 } 64 SymbolListTy GetGVStubList() const { 65 return GetSortedStubs(GVStubs); 66 } 67 SymbolListTy GetHiddenGVStubList() const { 68 return GetSortedStubs(HiddenGVStubs); 69 } 70 }; 71 72 /// MachineModuleInfoELF - This is a MachineModuleInfoImpl implementation 73 /// for ELF targets. 74 class MachineModuleInfoELF : public MachineModuleInfoImpl { 75 /// GVStubs - These stubs are used to materialize global addresses in PIC 76 /// mode. 77 DenseMap<MCSymbol*, StubValueTy> GVStubs; 78 79 virtual void anchor(); // Out of line virtual method. 80 public: 81 MachineModuleInfoELF(const MachineModuleInfo &) {} 82 83 StubValueTy &getGVStubEntry(MCSymbol *Sym) { 84 assert(Sym && "Key cannot be null"); 85 return GVStubs[Sym]; 86 } 87 88 /// Accessor methods to return the set of stubs in sorted order. 89 90 SymbolListTy GetGVStubList() const { 91 return GetSortedStubs(GVStubs); 92 } 93 }; 94 95 } // end namespace llvm 96 97 #endif 98
