#include "llvm/ExecutionEngine/MCJIT.h"
#include "llvm/ExecutionEngine/ObjectBuffer.h"
#include "llvm/ExecutionEngine/ObjectImage.h"
-#include "llvm/PassManager.h"
#include "llvm/ExecutionEngine/SectionMemoryManager.h"
#include "llvm/IR/DataLayout.h"
#include "llvm/IR/DerivedTypes.h"
#include "llvm/IR/Function.h"
+#include "llvm/IR/Mangler.h"
#include "llvm/IR/Module.h"
#include "llvm/MC/MCAsmInfo.h"
+#include "llvm/Object/Archive.h"
+#include "llvm/PassManager.h"
#include "llvm/Support/DynamicLibrary.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/MemoryBuffer.h"
#include "llvm/Support/MutexGuard.h"
-#include "llvm/Target/Mangler.h"
+#include "llvm/Target/TargetLowering.h"
+#include "llvm/Target/TargetSubtargetInfo.h"
using namespace llvm;
extern "C" void LLVMLinkInMCJIT() {
}
-ExecutionEngine *MCJIT::createJIT(Module *M,
+ExecutionEngine *MCJIT::createJIT(std::unique_ptr<Module> M,
std::string *ErrorStr,
RTDyldMemoryManager *MemMgr,
- bool GVsWithCode,
- TargetMachine *TM) {
+ std::unique_ptr<TargetMachine> TM) {
// Try to register the program as a source of symbols to resolve against.
//
// FIXME: Don't do this here.
- sys::DynamicLibrary::LoadLibraryPermanently(0, NULL);
-
- return new MCJIT(M, TM, MemMgr ? MemMgr : new SectionMemoryManager(),
- GVsWithCode);
-}
-
-MCJIT::MCJIT(Module *m, TargetMachine *tm, RTDyldMemoryManager *MM,
- bool AllocateGVsWithCode)
- : ExecutionEngine(m), TM(tm), Ctx(0), MemMgr(this, MM), Dyld(&MemMgr),
- ObjCache(0) {
+ sys::DynamicLibrary::LoadLibraryPermanently(nullptr, nullptr);
- OwnedModules.addModule(m);
- setDataLayout(TM->getDataLayout());
+ return new MCJIT(std::move(M), std::move(TM),
+ MemMgr ? MemMgr : new SectionMemoryManager());
}
-MCJIT::~MCJIT() {
- MutexGuard locked(lock);
+MCJIT::MCJIT(std::unique_ptr<Module> M, std::unique_ptr<TargetMachine> tm,
+ RTDyldMemoryManager *MM)
+ : ExecutionEngine(std::move(M)), TM(std::move(tm)), Ctx(nullptr),
+ MemMgr(this, MM), Dyld(&MemMgr), ObjCache(nullptr) {
// FIXME: We are managing our modules, so we do not want the base class
// ExecutionEngine to manage them as well. To avoid double destruction
// of the first (and only) module added in ExecutionEngine constructor
// If so, additional functions: addModule, removeModule, FindFunctionNamed,
// runStaticConstructorsDestructors could be moved back to EE as well.
//
+ std::unique_ptr<Module> First = std::move(Modules[0]);
Modules.clear();
+
+ OwnedModules.addModule(std::move(First));
+ setDataLayout(TM->getSubtargetImpl()->getDataLayout());
+}
+
+MCJIT::~MCJIT() {
+ MutexGuard locked(lock);
+
Dyld.deregisterEHFrames();
- LoadedObjectMap::iterator it, end = LoadedObjects.end();
- for (it = LoadedObjects.begin(); it != end; ++it) {
- ObjectImage *Obj = it->second;
- if (Obj) {
+ for (auto &Obj : LoadedObjects)
+ if (Obj)
NotifyFreeingObject(*Obj);
- delete Obj;
- }
- }
- LoadedObjects.clear();
- delete TM;
+
+ Archives.clear();
}
-void MCJIT::addModule(Module *M) {
+void MCJIT::addModule(std::unique_ptr<Module> M) {
MutexGuard locked(lock);
- OwnedModules.addModule(M);
+ OwnedModules.addModule(std::move(M));
}
bool MCJIT::removeModule(Module *M) {
return OwnedModules.removeModule(M);
}
+void MCJIT::addObjectFile(std::unique_ptr<object::ObjectFile> Obj) {
+ std::unique_ptr<ObjectImage> LoadedObject = Dyld.loadObject(std::move(Obj));
+ if (!LoadedObject || Dyld.hasError())
+ report_fatal_error(Dyld.getErrorString());
+
+ LoadedObjects.push_back(std::move(LoadedObject));
+
+ NotifyObjectEmitted(*LoadedObject);
+}
+
+void MCJIT::addObjectFile(object::OwningBinary<object::ObjectFile> Obj) {
+ addObjectFile(std::move(Obj.getBinary()));
+ Buffers.push_back(std::move(Obj.getBuffer()));
+}
+void MCJIT::addArchive(object::OwningBinary<object::Archive> A) {
+ Archives.push_back(std::move(A));
+}
void MCJIT::setObjectCache(ObjectCache* NewCache) {
MutexGuard locked(lock);
PassManager PM;
- PM.add(new DataLayout(*TM->getDataLayout()));
+ M->setDataLayout(TM->getSubtargetImpl()->getDataLayout());
+ PM.add(new DataLayoutPass(M));
// The RuntimeDyld will take ownership of this shortly
- OwningPtr<ObjectBufferStream> CompiledObject(new ObjectBufferStream());
+ std::unique_ptr<ObjectBufferStream> CompiledObject(new ObjectBufferStream());
// Turn the machine code intermediate representation into bytes in memory
// that may be executed.
- if (TM->addPassesToEmitMC(PM, Ctx, CompiledObject->getOStream(), false)) {
+ if (TM->addPassesToEmitMC(PM, Ctx, CompiledObject->getOStream(),
+ !getVerifyModules())) {
report_fatal_error("Target does not support MC emission!");
}
if (ObjCache) {
// MemoryBuffer is a thin wrapper around the actual memory, so it's OK
// to create a temporary object here and delete it after the call.
- OwningPtr<MemoryBuffer> MB(CompiledObject->getMemBuffer());
- ObjCache->notifyObjectCompiled(M, MB.get());
+ MemoryBufferRef MB = CompiledObject->getMemBuffer();
+ ObjCache->notifyObjectCompiled(M, MB);
}
- return CompiledObject.take();
+ return CompiledObject.release();
}
void MCJIT::generateCodeForModule(Module *M) {
if (OwnedModules.hasModuleBeenLoaded(M))
return;
- OwningPtr<ObjectBuffer> ObjectToLoad;
+ std::unique_ptr<ObjectBuffer> ObjectToLoad;
// Try to load the pre-compiled object from cache if possible
- if (0 != ObjCache) {
- OwningPtr<MemoryBuffer> PreCompiledObject(ObjCache->getObject(M));
- if (0 != PreCompiledObject.get())
- ObjectToLoad.reset(new ObjectBuffer(PreCompiledObject.take()));
+ if (ObjCache) {
+ if (std::unique_ptr<MemoryBuffer> PreCompiledObject =
+ ObjCache->getObject(M))
+ ObjectToLoad =
+ llvm::make_unique<ObjectBuffer>(std::move(PreCompiledObject));
}
// If the cache did not contain a suitable object, compile the object
}
// Load the object into the dynamic linker.
- // MCJIT now owns the ObjectImage pointer (via its LoadedObjects map).
- ObjectImage *LoadedObject = Dyld.loadObject(ObjectToLoad.take());
- LoadedObjects[M] = LoadedObject;
+ // MCJIT now owns the ObjectImage pointer (via its LoadedObjects list).
+ std::unique_ptr<ObjectImage> LoadedObject =
+ Dyld.loadObject(std::move(ObjectToLoad));
if (!LoadedObject)
report_fatal_error(Dyld.getErrorString());
NotifyObjectEmitted(*LoadedObject);
+ LoadedObjects.push_back(std::move(LoadedObject));
+
OwnedModules.markModuleAsLoaded(M);
}
finalizeLoadedModules();
}
-void *MCJIT::getPointerToBasicBlock(BasicBlock *BB) {
- report_fatal_error("not yet implemented");
-}
-
uint64_t MCJIT::getExistingSymbolAddress(const std::string &Name) {
- Mangler Mang(TM);
+ Mangler Mang(TM->getSubtargetImpl()->getDataLayout());
SmallString<128> FullName;
Mang.getNameWithPrefix(FullName, Name);
return Dyld.getSymbolLoadAddress(FullName);
}
}
// We didn't find the symbol in any of our modules.
- return NULL;
+ return nullptr;
}
uint64_t MCJIT::getSymbolAddress(const std::string &Name,
if (Addr)
return Addr;
+ for (object::OwningBinary<object::Archive> &OB : Archives) {
+ object::Archive *A = OB.getBinary().get();
+ // Look for our symbols in each Archive
+ object::Archive::child_iterator ChildIt = A->findSym(Name);
+ if (ChildIt != A->child_end()) {
+ // FIXME: Support nested archives?
+ ErrorOr<std::unique_ptr<object::Binary>> ChildBinOrErr =
+ ChildIt->getAsBinary();
+ if (ChildBinOrErr.getError())
+ continue;
+ std::unique_ptr<object::Binary> &ChildBin = ChildBinOrErr.get();
+ if (ChildBin->isObject()) {
+ std::unique_ptr<object::ObjectFile> OF(
+ static_cast<object::ObjectFile *>(ChildBin.release()));
+ // This causes the object file to be loaded.
+ addObjectFile(std::move(OF));
+ // The address should be here now.
+ Addr = getExistingSymbolAddress(Name);
+ if (Addr)
+ return Addr;
+ }
+ }
+ }
+
// If it hasn't already been generated, see if it's in one of our modules.
Module *M = findModuleForSymbol(Name, CheckFunctionsOnly);
- if (!M)
- return 0;
+ if (M) {
+ generateCodeForModule(M);
+
+ // Check the RuntimeDyld table again, it should be there now.
+ return getExistingSymbolAddress(Name);
+ }
- generateCodeForModule(M);
+ // If a LazyFunctionCreator is installed, use it to get/create the function.
+ // FIXME: Should we instead have a LazySymbolCreator callback?
+ if (LazyFunctionCreator)
+ Addr = (uint64_t)LazyFunctionCreator(Name);
- // Check the RuntimeDyld table again, it should be there now.
- return getExistingSymbolAddress(Name);
+ return Addr;
}
uint64_t MCJIT::getGlobalValueAddress(const std::string &Name) {
generateCodeForModule(M);
else if (!OwnedModules.hasModuleBeenLoaded(M))
// If this function doesn't belong to one of our modules, we're done.
- return NULL;
+ return nullptr;
// FIXME: Should the Dyld be retaining module information? Probably not.
//
// This is the accessor for the target address, so make sure to check the
// load address of the symbol, not the local address.
- Mangler Mang(TM);
+ Mangler Mang(TM->getSubtargetImpl()->getDataLayout());
SmallString<128> Name;
- Mang.getNameWithPrefix(Name, F, false);
+ TM->getNameWithPrefix(Name, F, Mang);
return (void*)Dyld.getSymbolLoadAddress(Name);
}
-void *MCJIT::recompileAndRelinkFunction(Function *F) {
- report_fatal_error("not yet implemented");
-}
-
-void MCJIT::freeMachineCodeForFunction(Function *F) {
- report_fatal_error("not yet implemented");
-}
-
void MCJIT::runStaticConstructorsDestructorsInModulePtrSet(
bool isDtors, ModulePtrSet::iterator I, ModulePtrSet::iterator E) {
for (; I != E; ++I) {
- ExecutionEngine::runStaticConstructorsDestructors(*I, isDtors);
+ ExecutionEngine::runStaticConstructorsDestructors(**I, isDtors);
}
}
if (Function *F = (*I)->getFunction(FnName))
return F;
}
- return 0;
+ return nullptr;
}
Function *MCJIT::FindFunctionNamed(const char *FnName) {
report_fatal_error("Program used external function '"+Name+
"' which could not be resolved!");
}
- return 0;
+ return nullptr;
}
void MCJIT::RegisterJITEventListener(JITEventListener *L) {
- if (L == NULL)
+ if (!L)
return;
MutexGuard locked(lock);
EventListeners.push_back(L);
}
void MCJIT::UnregisterJITEventListener(JITEventListener *L) {
- if (L == NULL)
+ if (!L)
return;
MutexGuard locked(lock);
- SmallVector<JITEventListener*, 2>::reverse_iterator I=
- std::find(EventListeners.rbegin(), EventListeners.rend(), L);
+ auto I = std::find(EventListeners.rbegin(), EventListeners.rend(), L);
if (I != EventListeners.rend()) {
std::swap(*I, EventListeners.back());
EventListeners.pop_back();
}
void MCJIT::NotifyFreeingObject(const ObjectImage& Obj) {
MutexGuard locked(lock);
- for (unsigned I = 0, S = EventListeners.size(); I < S; ++I) {
- EventListeners[I]->NotifyFreeingObject(Obj);
- }
+ for (JITEventListener *L : EventListeners)
+ L->NotifyFreeingObject(Obj);
}
uint64_t LinkingMemoryManager::getSymbolAddress(const std::string &Name) {
Result = ParentEngine->getSymbolAddress(Name.substr(1), false);
if (Result)
return Result;
+ if (ParentEngine->isSymbolSearchingDisabled())
+ return 0;
return ClientMM->getSymbolAddress(Name);
}
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