RuntimeDyldCOFF.cpp revision 302408
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 21using namespace llvm; 22using namespace llvm::object; 23 24#define DEBUG_TYPE "dyld" 25 26namespace { 27 28class LoadedCOFFObjectInfo final 29 : public RuntimeDyld::LoadedObjectInfoHelper<LoadedCOFFObjectInfo> { 30public: 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 41namespace llvm { 42 43std::unique_ptr<RuntimeDyldCOFF> 44llvm::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 58std::unique_ptr<RuntimeDyld::LoadedObjectInfo> 59RuntimeDyldCOFF::loadObject(const object::ObjectFile &O) { 60 return llvm::make_unique<LoadedCOFFObjectInfo>(*this, loadObjectImpl(O)); 61} 62 63uint64_t RuntimeDyldCOFF::getSymbolOffset(const SymbolRef &Sym) { 64 // The value in a relocatable COFF object is the offset. 65 return Sym.getValue(); 66} 67 68bool RuntimeDyldCOFF::isCompatibleFile(const object::ObjectFile &Obj) const { 69 return Obj.isCOFF(); 70} 71 72} // namespace llvm 73