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() { return getSortedStubs(FnStubs); } 62 SymbolListTy GetGVStubList() { return getSortedStubs(GVStubs); } 63 SymbolListTy GetHiddenGVStubList() { return getSortedStubs(HiddenGVStubs); } 64 }; 65 66 /// MachineModuleInfoELF - This is a MachineModuleInfoImpl implementation 67 /// for ELF targets. 68 class MachineModuleInfoELF : public MachineModuleInfoImpl { 69 /// GVStubs - These stubs are used to materialize global addresses in PIC 70 /// mode. 71 DenseMap<MCSymbol *, StubValueTy> GVStubs; 72 73 virtual void anchor(); // Out of line virtual method. 74 public: 75 MachineModuleInfoELF(const MachineModuleInfo &) {} 76 77 StubValueTy &getGVStubEntry(MCSymbol *Sym) { 78 assert(Sym && "Key cannot be null"); 79 return GVStubs[Sym]; 80 } 81 82 /// Accessor methods to return the set of stubs in sorted order. 83 84 SymbolListTy GetGVStubList() { return getSortedStubs(GVStubs); } 85 }; 86 87 } // end namespace llvm 88 89 #endif 90
