X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FExecutionEngine%2FMCJIT%2FMCJIT.cpp;h=492478da89f246cf7dd6ee944d8b074d3b98156e;hb=15e1e7f179e9740321df5cd9af21db5777044d9f;hp=ad11a839f0dae6469cc60de20bd5b66d8755206a;hpb=57edc9d4ff1648568a5dd7e9958649065b260dca;p=oota-llvm.git diff --git a/lib/ExecutionEngine/MCJIT/MCJIT.cpp b/lib/ExecutionEngine/MCJIT/MCJIT.cpp index ad11a839f0d..492478da89f 100644 --- a/lib/ExecutionEngine/MCJIT/MCJIT.cpp +++ b/lib/ExecutionEngine/MCJIT/MCJIT.cpp @@ -8,29 +8,29 @@ //===----------------------------------------------------------------------===// #include "MCJIT.h" +#include "llvm/ADT/STLExtras.h" #include "llvm/ExecutionEngine/GenericValue.h" #include "llvm/ExecutionEngine/JITEventListener.h" -#include "llvm/ExecutionEngine/JITMemoryManager.h" #include "llvm/ExecutionEngine/MCJIT.h" -#include "llvm/ExecutionEngine/ObjectBuffer.h" -#include "llvm/ExecutionEngine/ObjectImage.h" #include "llvm/ExecutionEngine/SectionMemoryManager.h" #include "llvm/IR/DataLayout.h" #include "llvm/IR/DerivedTypes.h" #include "llvm/IR/Function.h" +#include "llvm/IR/LegacyPassManager.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/Object/ObjectFile.h" #include "llvm/Support/DynamicLibrary.h" #include "llvm/Support/ErrorHandling.h" #include "llvm/Support/MemoryBuffer.h" #include "llvm/Support/MutexGuard.h" -#include "llvm/Target/TargetLowering.h" using namespace llvm; +void ObjectCache::anchor() {} + namespace { static struct RegisterJIT { @@ -42,31 +42,36 @@ static struct RegisterJIT { extern "C" void LLVMLinkInMCJIT() { } -ExecutionEngine *MCJIT::createJIT(Module *M, - std::string *ErrorStr, - RTDyldMemoryManager *MemMgr, - bool GVsWithCode, - TargetMachine *TM) { +ExecutionEngine* +MCJIT::createJIT(std::unique_ptr M, + std::string *ErrorStr, + std::shared_ptr MemMgr, + std::shared_ptr Resolver, + std::unique_ptr 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); + + if (!MemMgr || !Resolver) { + auto RTDyldMM = std::make_shared(); + if (!MemMgr) + MemMgr = RTDyldMM; + if (!Resolver) + Resolver = RTDyldMM; + } - OwnedModules.addModule(m); - setDataLayout(TM->getDataLayout()); + return new MCJIT(std::move(M), std::move(TM), std::move(MemMgr), + std::move(Resolver)); } -MCJIT::~MCJIT() { - MutexGuard locked(lock); +MCJIT::MCJIT(std::unique_ptr M, std::unique_ptr TM, + std::shared_ptr MemMgr, + std::shared_ptr Resolver) + : ExecutionEngine(TM->createDataLayout(), std::move(M)), TM(std::move(TM)), + Ctx(nullptr), MemMgr(std::move(MemMgr)), + Resolver(*this, std::move(Resolver)), Dyld(*this->MemMgr, this->Resolver), + 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 @@ -77,33 +82,28 @@ MCJIT::~MCJIT() { // If so, additional functions: addModule, removeModule, FindFunctionNamed, // runStaticConstructorsDestructors could be moved back to EE as well. // + std::unique_ptr First = std::move(Modules[0]); Modules.clear(); + + OwnedModules.addModule(std::move(First)); + RegisterJITEventListener(JITEventListener::createGDBRegistrationListener()); +} + +MCJIT::~MCJIT() { + MutexGuard locked(lock); + Dyld.deregisterEHFrames(); - LoadedObjectList::iterator it, end; - for (it = LoadedObjects.begin(), end = LoadedObjects.end(); it != end; ++it) { - ObjectImage *Obj = *it; - if (Obj) { + for (auto &Obj : LoadedObjects) + if (Obj) NotifyFreeingObject(*Obj); - delete Obj; - } - } - LoadedObjects.clear(); - - SmallVector::iterator ArIt, ArEnd; - for (ArIt = Archives.begin(), ArEnd = Archives.end(); ArIt != ArEnd; ++ArIt) { - object::Archive *A = *ArIt; - delete A; - } Archives.clear(); - - delete TM; } -void MCJIT::addModule(Module *M) { +void MCJIT::addModule(std::unique_ptr M) { MutexGuard locked(lock); - OwnedModules.addModule(M); + OwnedModules.addModule(std::move(M)); } bool MCJIT::removeModule(Module *M) { @@ -111,63 +111,69 @@ bool MCJIT::removeModule(Module *M) { return OwnedModules.removeModule(M); } - - -void MCJIT::addObjectFile(object::ObjectFile *Obj) { - ObjectImage *LoadedObject = Dyld.loadObject(Obj); - if (!LoadedObject) +void MCJIT::addObjectFile(std::unique_ptr Obj) { + std::unique_ptr L = Dyld.loadObject(*Obj); + if (Dyld.hasError()) report_fatal_error(Dyld.getErrorString()); - LoadedObjects.push_back(LoadedObject); + NotifyObjectEmitted(*Obj, *L); - NotifyObjectEmitted(*LoadedObject); + LoadedObjects.push_back(std::move(Obj)); } -void MCJIT::addArchive(object::Archive *A) { - Archives.push_back(A); +void MCJIT::addObjectFile(object::OwningBinary Obj) { + std::unique_ptr ObjFile; + std::unique_ptr MemBuf; + std::tie(ObjFile, MemBuf) = Obj.takeBinary(); + addObjectFile(std::move(ObjFile)); + Buffers.push_back(std::move(MemBuf)); } +void MCJIT::addArchive(object::OwningBinary A) { + Archives.push_back(std::move(A)); +} void MCJIT::setObjectCache(ObjectCache* NewCache) { MutexGuard locked(lock); ObjCache = NewCache; } -ObjectBufferStream* MCJIT::emitObject(Module *M) { +std::unique_ptr MCJIT::emitObject(Module *M) { MutexGuard locked(lock); // This must be a module which has already been added but not loaded to this // MCJIT instance, since these conditions are tested by our caller, // generateCodeForModule. - PassManager PM; - - PM.add(new DataLayoutPass(*TM->getDataLayout())); + legacy::PassManager PM; // The RuntimeDyld will take ownership of this shortly - OwningPtr CompiledObject(new ObjectBufferStream()); + SmallVector ObjBufferSV; + raw_svector_ostream ObjStream(ObjBufferSV); // 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, ObjStream, !getVerifyModules())) report_fatal_error("Target does not support MC emission!"); - } // Initialize passes. PM.run(*M); // Flush the output buffer to get the generated code into memory - CompiledObject->flush(); + ObjStream.flush(); + + std::unique_ptr CompiledObjBuffer( + new ObjectMemoryBuffer(std::move(ObjBufferSV))); // If we have an object cache, tell it about the new object. // Note that we're using the compiled image, not the loaded image (as below). 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 MB(CompiledObject->getMemBuffer()); - ObjCache->notifyObjectCompiled(M, MB.get()); + MemoryBufferRef MB = CompiledObjBuffer->getMemBufferRef(); + ObjCache->notifyObjectCompiled(M, MB); } - return CompiledObject.take(); + return CompiledObjBuffer; } void MCJIT::generateCodeForModule(Module *M) { @@ -182,31 +188,37 @@ void MCJIT::generateCodeForModule(Module *M) { if (OwnedModules.hasModuleBeenLoaded(M)) return; - OwningPtr ObjectToLoad; + std::unique_ptr ObjectToLoad; // Try to load the pre-compiled object from cache if possible - if (0 != ObjCache) { - OwningPtr PreCompiledObject(ObjCache->getObject(M)); - if (0 != PreCompiledObject.get()) - ObjectToLoad.reset(new ObjectBuffer(PreCompiledObject.take())); + if (ObjCache) + ObjectToLoad = ObjCache->getObject(M); + + if (M->getDataLayout().isDefault()) { + M->setDataLayout(getDataLayout()); + } else { + assert(M->getDataLayout() == getDataLayout() && "DataLayout Mismatch"); } // If the cache did not contain a suitable object, compile the object if (!ObjectToLoad) { - ObjectToLoad.reset(emitObject(M)); - assert(ObjectToLoad.get() && "Compilation did not produce an object."); + ObjectToLoad = emitObject(M); + assert(ObjectToLoad && "Compilation did not produce an object."); } // Load the object into the dynamic linker. // MCJIT now owns the ObjectImage pointer (via its LoadedObjects list). - ObjectImage *LoadedObject = Dyld.loadObject(ObjectToLoad.take()); - LoadedObjects.push_back(LoadedObject); - if (!LoadedObject) + ErrorOr> LoadedObject = + object::ObjectFile::createObjectFile(ObjectToLoad->getMemBufferRef()); + std::unique_ptr L = + Dyld.loadObject(*LoadedObject.get()); + + if (Dyld.hasError()) report_fatal_error(Dyld.getErrorString()); - // FIXME: Make this optional, maybe even move it to a JIT event listener - LoadedObject->registerWithDebugger(); + NotifyObjectEmitted(*LoadedObject.get(), *L); - NotifyObjectEmitted(*LoadedObject); + Buffers.push_back(std::move(ObjectToLoad)); + LoadedObjects.push_back(std::move(*LoadedObject)); OwnedModules.markModuleAsLoaded(M); } @@ -223,19 +235,21 @@ void MCJIT::finalizeLoadedModules() { Dyld.registerEHFrames(); // Set page permissions. - MemMgr.finalizeMemory(); + MemMgr->finalizeMemory(); } // FIXME: Rename this. void MCJIT::finalizeObject() { MutexGuard locked(lock); - for (ModulePtrSet::iterator I = OwnedModules.begin_added(), - E = OwnedModules.end_added(); - I != E; ++I) { - Module *M = *I; + // Generate code for module is going to move objects out of the 'added' list, + // so we need to copy that out before using it: + SmallVector ModsToAdd; + for (auto M : OwnedModules.added()) + ModsToAdd.push_back(M); + + for (auto M : ModsToAdd) generateCodeForModule(M); - } finalizeLoadedModules(); } @@ -253,15 +267,10 @@ void MCJIT::finalizeModule(Module *M) { finalizeLoadedModules(); } -void *MCJIT::getPointerToBasicBlock(BasicBlock *BB) { - report_fatal_error("not yet implemented"); -} - -uint64_t MCJIT::getExistingSymbolAddress(const std::string &Name) { - Mangler Mang(TM->getDataLayout()); +RuntimeDyld::SymbolInfo MCJIT::findExistingSymbol(const std::string &Name) { SmallString<128> FullName; - Mang.getNameWithPrefix(FullName, Name); - return Dyld.getSymbolLoadAddress(FullName); + Mangler::getNameWithPrefix(FullName, Name, getDataLayout()); + return Dyld.getSymbol(FullName); } Module *MCJIT::findModuleForSymbol(const std::string &Name, @@ -284,49 +293,63 @@ Module *MCJIT::findModuleForSymbol(const std::string &Name, } } // We didn't find the symbol in any of our modules. - return NULL; + return nullptr; } uint64_t MCJIT::getSymbolAddress(const std::string &Name, - bool CheckFunctionsOnly) -{ + bool CheckFunctionsOnly) { + return findSymbol(Name, CheckFunctionsOnly).getAddress(); +} + +RuntimeDyld::SymbolInfo MCJIT::findSymbol(const std::string &Name, + bool CheckFunctionsOnly) { MutexGuard locked(lock); // First, check to see if we already have this symbol. - uint64_t Addr = getExistingSymbolAddress(Name); - if (Addr) - return Addr; + if (auto Sym = findExistingSymbol(Name)) + return Sym; - SmallVector::iterator I, E; - for (I = Archives.begin(), E = Archives.end(); I != E; ++I) { - object::Archive *A = *I; + for (object::OwningBinary &OB : Archives) { + object::Archive *A = OB.getBinary(); // Look for our symbols in each Archive object::Archive::child_iterator ChildIt = A->findSym(Name); if (ChildIt != A->child_end()) { - OwningPtr ChildBin; // FIXME: Support nested archives? - if (!ChildIt->getAsBinary(ChildBin) && ChildBin->isObject()) { - object::ObjectFile *OF = reinterpret_cast( - ChildBin.take()); + ErrorOr> ChildBinOrErr = + ChildIt->getAsBinary(); + if (ChildBinOrErr.getError()) + continue; + std::unique_ptr &ChildBin = ChildBinOrErr.get(); + if (ChildBin->isObject()) { + std::unique_ptr OF( + static_cast(ChildBin.release())); // This causes the object file to be loaded. - addObjectFile(OF); + addObjectFile(std::move(OF)); // The address should be here now. - Addr = getExistingSymbolAddress(Name); - if (Addr) - return Addr; + if (auto Sym = findExistingSymbol(Name)) + return Sym; } } } // 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); - generateCodeForModule(M); + // Check the RuntimeDyld table again, it should be there now. + return findExistingSymbol(Name); + } + + // If a LazyFunctionCreator is installed, use it to get/create the function. + // FIXME: Should we instead have a LazySymbolCreator callback? + if (LazyFunctionCreator) { + auto Addr = static_cast( + reinterpret_cast(LazyFunctionCreator(Name))); + return RuntimeDyld::SymbolInfo(Addr, JITSymbolFlags::Exported); + } - // Check the RuntimeDyld table again, it should be there now. - return getExistingSymbolAddress(Name); + return nullptr; } uint64_t MCJIT::getGlobalValueAddress(const std::string &Name) { @@ -349,10 +372,14 @@ uint64_t MCJIT::getFunctionAddress(const std::string &Name) { void *MCJIT::getPointerToFunction(Function *F) { MutexGuard locked(lock); + Mangler Mang; + SmallString<128> Name; + TM->getNameWithPrefix(Name, F, Mang); + if (F->isDeclaration() || F->hasAvailableExternallyLinkage()) { bool AbortOnFailure = !F->hasExternalWeakLinkage(); - void *Addr = getPointerToNamedFunction(F->getName(), AbortOnFailure); - addGlobalMapping(F, Addr); + void *Addr = getPointerToNamedFunction(Name, AbortOnFailure); + updateGlobalMapping(F, Addr); return Addr; } @@ -362,32 +389,25 @@ void *MCJIT::getPointerToFunction(Function *F) { // Make sure the relevant module has been compiled and loaded. if (HasBeenAddedButNotLoaded) generateCodeForModule(M); - else if (!OwnedModules.hasModuleBeenLoaded(M)) + else if (!OwnedModules.hasModuleBeenLoaded(M)) { // If this function doesn't belong to one of our modules, we're done. - return NULL; + // FIXME: Asking for the pointer to a function that hasn't been registered, + // and isn't a declaration (which is handled above) should probably + // be an assertion. + 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->getDataLayout()); - SmallString<128> Name; - 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"); + return (void*)Dyld.getSymbol(Name).getAddress(); } void MCJIT::runStaticConstructorsDestructorsInModulePtrSet( bool isDtors, ModulePtrSet::iterator I, ModulePtrSet::iterator E) { for (; I != E; ++I) { - ExecutionEngine::runStaticConstructorsDestructors(*I, isDtors); + ExecutionEngine::runStaticConstructorsDestructors(**I, isDtors); } } @@ -405,12 +425,26 @@ Function *MCJIT::FindFunctionNamedInModulePtrSet(const char *FnName, ModulePtrSet::iterator I, ModulePtrSet::iterator E) { for (; I != E; ++I) { - if (Function *F = (*I)->getFunction(FnName)) + Function *F = (*I)->getFunction(FnName); + if (F && !F->isDeclaration()) return F; } - return 0; + return nullptr; +} + +GlobalVariable *MCJIT::FindGlobalVariableNamedInModulePtrSet(const char *Name, + bool AllowInternal, + ModulePtrSet::iterator I, + ModulePtrSet::iterator E) { + for (; I != E; ++I) { + GlobalVariable *GV = (*I)->getGlobalVariable(Name, AllowInternal); + if (GV && !GV->isDeclaration()) + return GV; + } + return nullptr; } + Function *MCJIT::FindFunctionNamed(const char *FnName) { Function *F = FindFunctionNamedInModulePtrSet( FnName, OwnedModules.begin_added(), OwnedModules.end_added()); @@ -423,8 +457,19 @@ Function *MCJIT::FindFunctionNamed(const char *FnName) { return F; } -GenericValue MCJIT::runFunction(Function *F, - const std::vector &ArgValues) { +GlobalVariable *MCJIT::FindGlobalVariableNamed(const char *Name, bool AllowInternal) { + GlobalVariable *GV = FindGlobalVariableNamedInModulePtrSet( + Name, AllowInternal, OwnedModules.begin_added(), OwnedModules.end_added()); + if (!GV) + GV = FindGlobalVariableNamedInModulePtrSet(Name, AllowInternal, OwnedModules.begin_loaded(), + OwnedModules.end_loaded()); + if (!GV) + GV = FindGlobalVariableNamedInModulePtrSet(Name, AllowInternal, OwnedModules.begin_finalized(), + OwnedModules.end_finalized()); + return GV; +} + +GenericValue MCJIT::runFunction(Function *F, ArrayRef ArgValues) { assert(F && "Function *F was null at entry to run()"); void *FPtr = getPointerToFunction(F); @@ -523,10 +568,11 @@ GenericValue MCJIT::runFunction(Function *F, llvm_unreachable("Full-featured argument passing not supported yet!"); } -void *MCJIT::getPointerToNamedFunction(const std::string &Name, - bool AbortOnFailure) { +void *MCJIT::getPointerToNamedFunction(StringRef Name, bool AbortOnFailure) { if (!isSymbolSearchingDisabled()) { - void *ptr = MemMgr.getPointerToNamedFunction(Name, false); + void *ptr = + reinterpret_cast( + static_cast(Resolver.findSymbol(Name).getAddress())); if (ptr) return ptr; } @@ -540,47 +586,52 @@ void *MCJIT::getPointerToNamedFunction(const std::string &Name, 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::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::NotifyObjectEmitted(const ObjectImage& Obj) { + +void MCJIT::NotifyObjectEmitted(const object::ObjectFile& Obj, + const RuntimeDyld::LoadedObjectInfo &L) { MutexGuard locked(lock); - MemMgr.notifyObjectLoaded(this, &Obj); + MemMgr->notifyObjectLoaded(this, Obj); for (unsigned I = 0, S = EventListeners.size(); I < S; ++I) { - EventListeners[I]->NotifyObjectEmitted(Obj); + EventListeners[I]->NotifyObjectEmitted(Obj, L); } } -void MCJIT::NotifyFreeingObject(const ObjectImage& Obj) { + +void MCJIT::NotifyFreeingObject(const object::ObjectFile& 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) { - uint64_t Result = ParentEngine->getSymbolAddress(Name, false); +RuntimeDyld::SymbolInfo +LinkingSymbolResolver::findSymbol(const std::string &Name) { + auto Result = ParentEngine.findSymbol(Name, false); // If the symbols wasn't found and it begins with an underscore, try again // without the underscore. if (!Result && Name[0] == '_') - Result = ParentEngine->getSymbolAddress(Name.substr(1), false); + Result = ParentEngine.findSymbol(Name.substr(1), false); if (Result) return Result; - return ClientMM->getSymbolAddress(Name); + if (ParentEngine.isSymbolSearchingDisabled()) + return nullptr; + return ClientResolver->findSymbol(Name); }