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/RuntimeDyldCOFFThumb.h" 17 #include "Targets/RuntimeDyldCOFFX86_64.h" 18 #include "llvm/ADT/STLExtras.h" 19 #include "llvm/ADT/Triple.h" 20 #include "llvm/Object/ObjectFile.h" 21 22 using namespace llvm; 23 using namespace llvm::object; 24 25 #define DEBUG_TYPE "dyld" 26 27 namespace { 28 29 class LoadedCOFFObjectInfo final 30 : public RuntimeDyld::LoadedObjectInfoHelper<LoadedCOFFObjectInfo> { 31 public: 32 LoadedCOFFObjectInfo(RuntimeDyldImpl &RTDyld, ObjSectionToIDMap ObjSecToIDMap) 33 : LoadedObjectInfoHelper(RTDyld, std::move(ObjSecToIDMap)) {} 34 35 OwningBinary<ObjectFile> 36 getObjectForDebug(const ObjectFile &Obj) const override { 37 return OwningBinary<ObjectFile>(); 38 } 39 }; 40 } 41 42 namespace llvm { 43 44 std::unique_ptr<RuntimeDyldCOFF> 45 llvm::RuntimeDyldCOFF::create(Triple::ArchType Arch, 46 RuntimeDyld::MemoryManager &MemMgr, 47 RuntimeDyld::SymbolResolver &Resolver) { 48 switch (Arch) { 49 default: llvm_unreachable("Unsupported target for RuntimeDyldCOFF."); 50 case Triple::x86: 51 return make_unique<RuntimeDyldCOFFI386>(MemMgr, Resolver); 52 case Triple::thumb: 53 return make_unique<RuntimeDyldCOFFThumb>(MemMgr, Resolver); 54 case Triple::x86_64: 55 return make_unique<RuntimeDyldCOFFX86_64>(MemMgr, Resolver); 56 } 57 } 58 59 std::unique_ptr<RuntimeDyld::LoadedObjectInfo> 60 RuntimeDyldCOFF::loadObject(const object::ObjectFile &O) { 61 if (auto ObjSectionToIDOrErr = loadObjectImpl(O)) { 62 return llvm::make_unique<LoadedCOFFObjectInfo>(*this, *ObjSectionToIDOrErr); 63 } else { 64 HasError = true; 65 raw_string_ostream ErrStream(ErrorStr); 66 logAllUnhandledErrors(ObjSectionToIDOrErr.takeError(), ErrStream, ""); 67 return nullptr; 68 } 69 } 70 71 uint64_t RuntimeDyldCOFF::getSymbolOffset(const SymbolRef &Sym) { 72 // The value in a relocatable COFF object is the offset. 73 return Sym.getValue(); 74 } 75 76 bool RuntimeDyldCOFF::isCompatibleFile(const object::ObjectFile &Obj) const { 77 return Obj.isCOFF(); 78 } 79 80 } // namespace llvm 81
