forked from OSchip/llvm-project
83 lines
2.6 KiB
C++
83 lines
2.6 KiB
C++
//===-- RuntimeDyldCOFF.cpp - Run-time dynamic linker for MC-JIT -*- C++ -*-==//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// Implementation of COFF support for the MC-JIT runtime dynamic linker.
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//
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//===----------------------------------------------------------------------===//
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#include "RuntimeDyldCOFF.h"
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#include "Targets/RuntimeDyldCOFFI386.h"
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#include "Targets/RuntimeDyldCOFFThumb.h"
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#include "Targets/RuntimeDyldCOFFX86_64.h"
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#include "llvm/ADT/STLExtras.h"
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#include "llvm/ADT/Triple.h"
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#include "llvm/Object/ObjectFile.h"
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using namespace llvm;
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using namespace llvm::object;
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#define DEBUG_TYPE "dyld"
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namespace {
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class LoadedCOFFObjectInfo final
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: public LoadedObjectInfoHelper<LoadedCOFFObjectInfo,
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RuntimeDyld::LoadedObjectInfo> {
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public:
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LoadedCOFFObjectInfo(
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RuntimeDyldImpl &RTDyld,
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RuntimeDyld::LoadedObjectInfo::ObjSectionToIDMap ObjSecToIDMap)
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: LoadedObjectInfoHelper(RTDyld, std::move(ObjSecToIDMap)) {}
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OwningBinary<ObjectFile>
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getObjectForDebug(const ObjectFile &Obj) const override {
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return OwningBinary<ObjectFile>();
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}
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};
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}
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namespace llvm {
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std::unique_ptr<RuntimeDyldCOFF>
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llvm::RuntimeDyldCOFF::create(Triple::ArchType Arch,
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RuntimeDyld::MemoryManager &MemMgr,
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JITSymbolResolver &Resolver) {
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switch (Arch) {
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default: llvm_unreachable("Unsupported target for RuntimeDyldCOFF.");
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case Triple::x86:
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return std::make_unique<RuntimeDyldCOFFI386>(MemMgr, Resolver);
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case Triple::thumb:
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return std::make_unique<RuntimeDyldCOFFThumb>(MemMgr, Resolver);
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case Triple::x86_64:
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return std::make_unique<RuntimeDyldCOFFX86_64>(MemMgr, Resolver);
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}
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}
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std::unique_ptr<RuntimeDyld::LoadedObjectInfo>
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RuntimeDyldCOFF::loadObject(const object::ObjectFile &O) {
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if (auto ObjSectionToIDOrErr = loadObjectImpl(O)) {
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return std::make_unique<LoadedCOFFObjectInfo>(*this, *ObjSectionToIDOrErr);
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} else {
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HasError = true;
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raw_string_ostream ErrStream(ErrorStr);
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logAllUnhandledErrors(ObjSectionToIDOrErr.takeError(), ErrStream);
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return nullptr;
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}
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}
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uint64_t RuntimeDyldCOFF::getSymbolOffset(const SymbolRef &Sym) {
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// The value in a relocatable COFF object is the offset.
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return Sym.getValue();
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}
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bool RuntimeDyldCOFF::isCompatibleFile(const object::ObjectFile &Obj) const {
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return Obj.isCOFF();
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}
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} // namespace llvm
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