#ifndef LLVM_LIB_EXECUTIONENGINE_MCJIT_MCJIT_H
#define LLVM_LIB_EXECUTIONENGINE_MCJIT_MCJIT_H
#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/SmallPtrSet.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ExecutionEngine/ExecutionEngine.h"
#include "llvm/ExecutionEngine/ObjectCache.h"
#include "llvm/ExecutionEngine/ObjectMemoryBuffer.h"
#include "llvm/ExecutionEngine/RuntimeDyld.h"
#include "llvm/IR/Module.h"
namespace llvm {
class MCJIT;
class LinkingMemoryManager : public RTDyldMemoryManager {
public:
LinkingMemoryManager(MCJIT *Parent,
std::unique_ptr<RTDyldMemoryManager> MM)
: ParentEngine(Parent), ClientMM(std::move(MM)) {}
uint64_t getSymbolAddress(const std::string &Name) override;
uint8_t *allocateCodeSection(uintptr_t Size, unsigned Alignment,
unsigned SectionID,
StringRef SectionName) override {
return ClientMM->allocateCodeSection(Size, Alignment, SectionID, SectionName);
}
uint8_t *allocateDataSection(uintptr_t Size, unsigned Alignment,
unsigned SectionID, StringRef SectionName,
bool IsReadOnly) override {
return ClientMM->allocateDataSection(Size, Alignment,
SectionID, SectionName, IsReadOnly);
}
void reserveAllocationSpace(uintptr_t CodeSize, uintptr_t DataSizeRO,
uintptr_t DataSizeRW) override {
return ClientMM->reserveAllocationSpace(CodeSize, DataSizeRO, DataSizeRW);
}
bool needsToReserveAllocationSpace() override {
return ClientMM->needsToReserveAllocationSpace();
}
void notifyObjectLoaded(ExecutionEngine *EE,
const object::ObjectFile &Obj) override {
ClientMM->notifyObjectLoaded(EE, Obj);
}
void registerEHFrames(uint8_t *Addr, uint64_t LoadAddr,
size_t Size) override {
ClientMM->registerEHFrames(Addr, LoadAddr, Size);
}
void deregisterEHFrames(uint8_t *Addr, uint64_t LoadAddr,
size_t Size) override {
ClientMM->deregisterEHFrames(Addr, LoadAddr, Size);
}
bool finalizeMemory(std::string *ErrMsg = nullptr) override {
return ClientMM->finalizeMemory(ErrMsg);
}
private:
MCJIT *ParentEngine;
std::unique_ptr<RTDyldMemoryManager> ClientMM;
};
class MCJIT : public ExecutionEngine {
MCJIT(std::unique_ptr<Module> M, std::unique_ptr<TargetMachine> tm,
std::unique_ptr<RTDyldMemoryManager> MemMgr);
typedef llvm::SmallPtrSet<Module *, 4> ModulePtrSet;
class OwningModuleContainer {
public:
OwningModuleContainer() {
}
~OwningModuleContainer() {
freeModulePtrSet(AddedModules);
freeModulePtrSet(LoadedModules);
freeModulePtrSet(FinalizedModules);
}
ModulePtrSet::iterator begin_added() { return AddedModules.begin(); }
ModulePtrSet::iterator end_added() { return AddedModules.end(); }
iterator_range<ModulePtrSet::iterator> added() {
return iterator_range<ModulePtrSet::iterator>(begin_added(), end_added());
}
ModulePtrSet::iterator begin_loaded() { return LoadedModules.begin(); }
ModulePtrSet::iterator end_loaded() { return LoadedModules.end(); }
ModulePtrSet::iterator begin_finalized() { return FinalizedModules.begin(); }
ModulePtrSet::iterator end_finalized() { return FinalizedModules.end(); }
void addModule(std::unique_ptr<Module> M) {
AddedModules.insert(M.release());
}
bool removeModule(Module *M) {
return AddedModules.erase(M) || LoadedModules.erase(M) ||
FinalizedModules.erase(M);
}
bool hasModuleBeenAddedButNotLoaded(Module *M) {
return AddedModules.count(M) != 0;
}
bool hasModuleBeenLoaded(Module *M) {
return (LoadedModules.count(M) != 0 ) || (FinalizedModules.count(M) != 0);
}
bool hasModuleBeenFinalized(Module *M) {
return FinalizedModules.count(M) != 0;
}
bool ownsModule(Module* M) {
return (AddedModules.count(M) != 0) || (LoadedModules.count(M) != 0) ||
(FinalizedModules.count(M) != 0);
}
void markModuleAsLoaded(Module *M) {
assert(AddedModules.count(M) &&
"markModuleAsLoaded: Module not found in AddedModules");
AddedModules.erase(M);
LoadedModules.insert(M);
}
void markModuleAsFinalized(Module *M) {
assert(LoadedModules.count(M) &&
"markModuleAsFinalized: Module not found in LoadedModules");
LoadedModules.erase(M);
FinalizedModules.insert(M);
}
void markAllLoadedModulesAsFinalized() {
for (ModulePtrSet::iterator I = LoadedModules.begin(),
E = LoadedModules.end();
I != E; ++I) {
Module *M = *I;
FinalizedModules.insert(M);
}
LoadedModules.clear();
}
private:
ModulePtrSet AddedModules;
ModulePtrSet LoadedModules;
ModulePtrSet FinalizedModules;
void freeModulePtrSet(ModulePtrSet& MPS) {
for (ModulePtrSet::iterator I = MPS.begin(), E = MPS.end(); I != E; ++I) {
Module *M = *I;
delete M;
}
MPS.clear();
}
};
std::unique_ptr<TargetMachine> TM;
MCContext *Ctx;
LinkingMemoryManager MemMgr;
RuntimeDyld Dyld;
std::vector<JITEventListener*> EventListeners;
OwningModuleContainer OwnedModules;
SmallVector<object::OwningBinary<object::Archive>, 2> Archives;
SmallVector<std::unique_ptr<MemoryBuffer>, 2> Buffers;
SmallVector<std::unique_ptr<object::ObjectFile>, 2> LoadedObjects;
ObjectCache *ObjCache;
Function *FindFunctionNamedInModulePtrSet(const char *FnName,
ModulePtrSet::iterator I,
ModulePtrSet::iterator E);
void runStaticConstructorsDestructorsInModulePtrSet(bool isDtors,
ModulePtrSet::iterator I,
ModulePtrSet::iterator E);
public:
~MCJIT();
void addModule(std::unique_ptr<Module> M) override;
void addObjectFile(std::unique_ptr<object::ObjectFile> O) override;
void addObjectFile(object::OwningBinary<object::ObjectFile> O) override;
void addArchive(object::OwningBinary<object::Archive> O) override;
bool removeModule(Module *M) override;
Function *FindFunctionNamed(const char *FnName) override;
void setObjectCache(ObjectCache *manager) override;
void setProcessAllSections(bool ProcessAllSections) override {
Dyld.setProcessAllSections(ProcessAllSections);
}
void generateCodeForModule(Module *M) override;
void finalizeObject() override;
virtual void finalizeModule(Module *);
void finalizeLoadedModules();
void runStaticConstructorsDestructors(bool isDtors) override;
void *getPointerToFunction(Function *F) override;
GenericValue runFunction(Function *F,
const std::vector<GenericValue> &ArgValues) override;
void *getPointerToNamedFunction(StringRef Name,
bool AbortOnFailure = true) override;
void mapSectionAddress(const void *LocalAddress,
uint64_t TargetAddress) override {
Dyld.mapSectionAddress(LocalAddress, TargetAddress);
}
void RegisterJITEventListener(JITEventListener *L) override;
void UnregisterJITEventListener(JITEventListener *L) override;
uint64_t getGlobalValueAddress(const std::string &Name) override;
uint64_t getFunctionAddress(const std::string &Name) override;
TargetMachine *getTargetMachine() override { return TM.get(); }
static void Register() {
MCJITCtor = createJIT;
}
static ExecutionEngine *createJIT(std::unique_ptr<Module> M,
std::string *ErrorStr,
std::unique_ptr<RTDyldMemoryManager> MemMgr,
std::unique_ptr<TargetMachine> TM);
uint64_t getSymbolAddress(const std::string &Name,
bool CheckFunctionsOnly);
protected:
std::unique_ptr<MemoryBuffer> emitObject(Module *M);
void NotifyObjectEmitted(const object::ObjectFile& Obj,
const RuntimeDyld::LoadedObjectInfo &L);
void NotifyFreeingObject(const object::ObjectFile& Obj);
uint64_t getExistingSymbolAddress(const std::string &Name);
Module *findModuleForSymbol(const std::string &Name,
bool CheckFunctionsOnly);
};
}
#endif