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//===-- RuntimeDyldCOFF.cpp - Run-time dynamic linker for MC-JIT -*- C++ -*-==//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// Implementation of COFF support for the MC-JIT runtime dynamic linker.
//
//===----------------------------------------------------------------------===//
#include "RuntimeDyldCOFF.h"
#include "Targets/RuntimeDyldCOFFX86_64.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/Triple.h"
#include "llvm/Object/ObjectFile.h"
using namespace llvm;
using namespace llvm::object;
#define DEBUG_TYPE "dyld"
namespace {
class LoadedCOFFObjectInfo : public RuntimeDyld::LoadedObjectInfo {
public:
LoadedCOFFObjectInfo(RuntimeDyldImpl &RTDyld, unsigned BeginIdx,
unsigned EndIdx)
: RuntimeDyld::LoadedObjectInfo(RTDyld, BeginIdx, EndIdx) {}
OwningBinary<ObjectFile>
getObjectForDebug(const ObjectFile &Obj) const override {
return OwningBinary<ObjectFile>();
}
};
}
namespace llvm {
std::unique_ptr<RuntimeDyldCOFF>
llvm::RuntimeDyldCOFF::create(Triple::ArchType Arch, RTDyldMemoryManager *MM) {
switch (Arch) {
default:
llvm_unreachable("Unsupported target for RuntimeDyldCOFF.");
break;
case Triple::x86_64:
return make_unique<RuntimeDyldCOFFX86_64>(MM);
}
}
std::unique_ptr<RuntimeDyld::LoadedObjectInfo>
RuntimeDyldCOFF::loadObject(const object::ObjectFile &O) {
unsigned SectionStartIdx, SectionEndIdx;
std::tie(SectionStartIdx, SectionEndIdx) = loadObjectImpl(O);
return llvm::make_unique<LoadedCOFFObjectInfo>(*this, SectionStartIdx,
SectionEndIdx);
}
uint64_t RuntimeDyldCOFF::getSymbolOffset(const SymbolRef &Sym) {
uint64_t Address;
if (Sym.getAddress(Address))
return UnknownAddressOrSize;
if (Address == UnknownAddressOrSize)
return UnknownAddressOrSize;
const ObjectFile *Obj = Sym.getObject();
section_iterator SecI(Obj->section_end());
if (Sym.getSection(SecI))
return UnknownAddressOrSize;
if (SecI == Obj->section_end())
return UnknownAddressOrSize;
uint64_t SectionAddress = SecI->getAddress();
return Address - SectionAddress;
}
bool RuntimeDyldCOFF::isCompatibleFile(const object::ObjectFile &Obj) const {
return Obj.isCOFF();
}
} // namespace llvm
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