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//===-- RemoteJITUtils.h - Utilities for remote-JITing with LLI -*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// Utilities for remote-JITing with LLI.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_TOOLS_LLI_FORWARDINGMEMORYMANAGER_H
#define LLVM_TOOLS_LLI_FORWARDINGMEMORYMANAGER_H
#include "llvm/ExecutionEngine/Orc/EPCGenericDylibManager.h"
#include "llvm/ExecutionEngine/RTDyldMemoryManager.h"
namespace llvm {
// ForwardingMM - Adapter to connect MCJIT to Orc's Remote
// memory manager.
class ForwardingMemoryManager : public llvm::RTDyldMemoryManager {
public:
void setMemMgr(std::unique_ptr<RuntimeDyld::MemoryManager> MemMgr) {
this->MemMgr = std::move(MemMgr);
}
void setResolver(std::shared_ptr<LegacyJITSymbolResolver> Resolver) {
this->Resolver = std::move(Resolver);
}
uint8_t *allocateCodeSection(uintptr_t Size, unsigned Alignment,
unsigned SectionID,
StringRef SectionName) override {
return MemMgr->allocateCodeSection(Size, Alignment, SectionID, SectionName);
}
uint8_t *allocateDataSection(uintptr_t Size, unsigned Alignment,
unsigned SectionID, StringRef SectionName,
bool IsReadOnly) override {
return MemMgr->allocateDataSection(Size, Alignment, SectionID, SectionName,
IsReadOnly);
}
void reserveAllocationSpace(uintptr_t CodeSize, Align CodeAlign,
uintptr_t RODataSize, Align RODataAlign,
uintptr_t RWDataSize,
Align RWDataAlign) override {
MemMgr->reserveAllocationSpace(CodeSize, CodeAlign, RODataSize, RODataAlign,
RWDataSize, RWDataAlign);
}
bool needsToReserveAllocationSpace() override {
return MemMgr->needsToReserveAllocationSpace();
}
void registerEHFrames(uint8_t *Addr, uint64_t LoadAddr,
size_t Size) override {
MemMgr->registerEHFrames(Addr, LoadAddr, Size);
}
void deregisterEHFrames() override { MemMgr->deregisterEHFrames(); }
bool finalizeMemory(std::string *ErrMsg = nullptr) override {
return MemMgr->finalizeMemory(ErrMsg);
}
void notifyObjectLoaded(RuntimeDyld &RTDyld,
const object::ObjectFile &Obj) override {
MemMgr->notifyObjectLoaded(RTDyld, Obj);
}
// Don't hide the sibling notifyObjectLoaded from RTDyldMemoryManager.
using RTDyldMemoryManager::notifyObjectLoaded;
JITSymbol findSymbol(const std::string &Name) override {
return Resolver->findSymbol(Name);
}
JITSymbol findSymbolInLogicalDylib(const std::string &Name) override {
return Resolver->findSymbolInLogicalDylib(Name);
}
private:
std::unique_ptr<RuntimeDyld::MemoryManager> MemMgr;
std::shared_ptr<LegacyJITSymbolResolver> Resolver;
};
class RemoteResolver : public LegacyJITSymbolResolver {
public:
static Expected<std::unique_ptr<RemoteResolver>>
Create(orc::ExecutorProcessControl &EPC) {
auto DylibMgr =
orc::EPCGenericDylibManager::CreateWithDefaultBootstrapSymbols(EPC);
if (!DylibMgr)
return DylibMgr.takeError();
auto H = DylibMgr->open("", 0);
if (!H)
return H.takeError();
return std::unique_ptr<RemoteResolver>(
new RemoteResolver(std::move(*DylibMgr), std::move(*H)));
}
JITSymbol findSymbol(const std::string &Name) override {
orc::RemoteSymbolLookupSet R;
R.push_back({std::move(Name), false});
if (auto Addrs = DylibMgr.lookup(H, R)) {
if (Addrs->size() != 1)
return make_error<StringError>("Unexpected remote lookup result",
inconvertibleErrorCode());
return JITSymbol(Addrs->front().getValue(), JITSymbolFlags::Exported);
} else
return Addrs.takeError();
}
JITSymbol findSymbolInLogicalDylib(const std::string &Name) override {
return nullptr;
}
public:
RemoteResolver(orc::EPCGenericDylibManager DylibMgr,
orc::tpctypes::DylibHandle H)
: DylibMgr(std::move(DylibMgr)), H(std::move(H)) {}
orc::EPCGenericDylibManager DylibMgr;
orc::tpctypes::DylibHandle H;
};
} // namespace llvm
#endif // LLVM_TOOLS_LLI_FORWARDINGMEMORYMANAGER_H
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