1 //===-- RuntimeDyldCOFF.cpp - Run-time dynamic linker for MC-JIT -*- 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 // Implementation of COFF support for the MC-JIT runtime dynamic linker. 11 // 12 //===----------------------------------------------------------------------===// 13 14 #include "RuntimeDyldCOFF.h" 15 #include "Targets/RuntimeDyldCOFFI386.h" 16 #include "Targets/RuntimeDyldCOFFX86_64.h" 17 #include "llvm/ADT/STLExtras.h" 18 #include "llvm/ADT/Triple.h" 19 #include "llvm/Object/ObjectFile.h" 20 21 using namespace llvm; 22 using namespace llvm::object; 23 24 #define DEBUG_TYPE "dyld" 25 26 namespace { 27 28 class LoadedCOFFObjectInfo final 29 : public RuntimeDyld::LoadedObjectInfoHelper<LoadedCOFFObjectInfo> { 30 public: 31 LoadedCOFFObjectInfo(RuntimeDyldImpl &RTDyld, ObjSectionToIDMap ObjSecToIDMap) 32 : LoadedObjectInfoHelper(RTDyld, std::move(ObjSecToIDMap)) {} 33 34 OwningBinary<ObjectFile> 35 getObjectForDebug(const ObjectFile &Obj) const override { 36 return OwningBinary<ObjectFile>(); 37 } 38 }; 39 } 40 41 namespace llvm { 42 43 std::unique_ptr<RuntimeDyldCOFF> 44 llvm::RuntimeDyldCOFF::create(Triple::ArchType Arch, 45 RuntimeDyld::MemoryManager &MemMgr, 46 RuntimeDyld::SymbolResolver &Resolver) { 47 switch (Arch) { 48 default: 49 llvm_unreachable("Unsupported target for RuntimeDyldCOFF."); 50 break; 51 case Triple::x86: 52 return make_unique<RuntimeDyldCOFFI386>(MemMgr, Resolver); 53 case Triple::x86_64: 54 return make_unique<RuntimeDyldCOFFX86_64>(MemMgr, Resolver); 55 } 56 } 57 58 std::unique_ptr<RuntimeDyld::LoadedObjectInfo> 59 RuntimeDyldCOFF::loadObject(const object::ObjectFile &O) { 60 return llvm::make_unique<LoadedCOFFObjectInfo>(*this, loadObjectImpl(O)); 61 } 62 63 uint64_t RuntimeDyldCOFF::getSymbolOffset(const SymbolRef &Sym) { 64 // The value in a relocatable COFF object is the offset. 65 return Sym.getValue(); 66 } 67 68 bool RuntimeDyldCOFF::isCompatibleFile(const object::ObjectFile &Obj) const { 69 return Obj.isCOFF(); 70 } 71 72 } // namespace llvm 73
