| /* |
| * Copyright (C) 2012 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include "interpreter_common.h" |
| |
| #include <limits> |
| |
| #include "mirror/string-inl.h" |
| |
| namespace art { |
| namespace interpreter { |
| |
| // Hand select a number of methods to be run in a not yet started runtime without using JNI. |
| static void UnstartedRuntimeJni(Thread* self, ArtMethod* method, |
| Object* receiver, uint32_t* args, JValue* result) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| std::string name(PrettyMethod(method)); |
| if (name == "java.lang.Object dalvik.system.VMRuntime.newUnpaddedArray(java.lang.Class, int)") { |
| int32_t length = args[1]; |
| DCHECK_GE(length, 0); |
| mirror::Class* element_class = reinterpret_cast<Object*>(args[0])->AsClass(); |
| Runtime* runtime = Runtime::Current(); |
| mirror::Class* array_class = runtime->GetClassLinker()->FindArrayClass(self, &element_class); |
| DCHECK(array_class != nullptr); |
| gc::AllocatorType allocator = runtime->GetHeap()->GetCurrentAllocator(); |
| result->SetL(mirror::Array::Alloc<true, true>(self, array_class, length, |
| array_class->GetComponentSizeShift(), allocator)); |
| } else if (name == "java.lang.ClassLoader dalvik.system.VMStack.getCallingClassLoader()") { |
| result->SetL(NULL); |
| } else if (name == "java.lang.Class dalvik.system.VMStack.getStackClass2()") { |
| NthCallerVisitor visitor(self, 3); |
| visitor.WalkStack(); |
| result->SetL(visitor.caller->GetDeclaringClass()); |
| } else if (name == "double java.lang.Math.log(double)") { |
| JValue value; |
| value.SetJ((static_cast<uint64_t>(args[1]) << 32) | args[0]); |
| result->SetD(log(value.GetD())); |
| } else if (name == "java.lang.String java.lang.Class.getNameNative()") { |
| StackHandleScope<1> hs(self); |
| result->SetL(mirror::Class::ComputeName(hs.NewHandle(receiver->AsClass()))); |
| } else if (name == "int java.lang.Float.floatToRawIntBits(float)") { |
| result->SetI(args[0]); |
| } else if (name == "float java.lang.Float.intBitsToFloat(int)") { |
| result->SetI(args[0]); |
| } else if (name == "double java.lang.Math.exp(double)") { |
| JValue value; |
| value.SetJ((static_cast<uint64_t>(args[1]) << 32) | args[0]); |
| result->SetD(exp(value.GetD())); |
| } else if (name == "java.lang.Object java.lang.Object.internalClone()") { |
| result->SetL(receiver->Clone(self)); |
| } else if (name == "void java.lang.Object.notifyAll()") { |
| receiver->NotifyAll(self); |
| } else if (name == "int java.lang.String.compareTo(java.lang.String)") { |
| String* rhs = reinterpret_cast<Object*>(args[0])->AsString(); |
| CHECK(rhs != NULL); |
| result->SetI(receiver->AsString()->CompareTo(rhs)); |
| } else if (name == "java.lang.String java.lang.String.intern()") { |
| result->SetL(receiver->AsString()->Intern()); |
| } else if (name == "int java.lang.String.fastIndexOf(int, int)") { |
| result->SetI(receiver->AsString()->FastIndexOf(args[0], args[1])); |
| } else if (name == "java.lang.Object java.lang.reflect.Array.createMultiArray(java.lang.Class, int[])") { |
| StackHandleScope<2> hs(self); |
| auto h_class(hs.NewHandle(reinterpret_cast<mirror::Class*>(args[0])->AsClass())); |
| auto h_dimensions(hs.NewHandle(reinterpret_cast<mirror::IntArray*>(args[1])->AsIntArray())); |
| result->SetL(Array::CreateMultiArray(self, h_class, h_dimensions)); |
| } else if (name == "java.lang.Object java.lang.Throwable.nativeFillInStackTrace()") { |
| ScopedObjectAccessUnchecked soa(self); |
| if (Runtime::Current()->IsActiveTransaction()) { |
| result->SetL(soa.Decode<Object*>(self->CreateInternalStackTrace<true>(soa))); |
| } else { |
| result->SetL(soa.Decode<Object*>(self->CreateInternalStackTrace<false>(soa))); |
| } |
| } else if (name == "int java.lang.System.identityHashCode(java.lang.Object)") { |
| mirror::Object* obj = reinterpret_cast<Object*>(args[0]); |
| result->SetI((obj != nullptr) ? obj->IdentityHashCode() : 0); |
| } else if (name == "boolean java.nio.ByteOrder.isLittleEndian()") { |
| result->SetZ(JNI_TRUE); |
| } else if (name == "boolean sun.misc.Unsafe.compareAndSwapInt(java.lang.Object, long, int, int)") { |
| Object* obj = reinterpret_cast<Object*>(args[0]); |
| jlong offset = (static_cast<uint64_t>(args[2]) << 32) | args[1]; |
| jint expectedValue = args[3]; |
| jint newValue = args[4]; |
| bool success; |
| if (Runtime::Current()->IsActiveTransaction()) { |
| success = obj->CasFieldStrongSequentiallyConsistent32<true>(MemberOffset(offset), |
| expectedValue, newValue); |
| } else { |
| success = obj->CasFieldStrongSequentiallyConsistent32<false>(MemberOffset(offset), |
| expectedValue, newValue); |
| } |
| result->SetZ(success ? JNI_TRUE : JNI_FALSE); |
| } else if (name == "void sun.misc.Unsafe.putObject(java.lang.Object, long, java.lang.Object)") { |
| Object* obj = reinterpret_cast<Object*>(args[0]); |
| jlong offset = (static_cast<uint64_t>(args[2]) << 32) | args[1]; |
| Object* newValue = reinterpret_cast<Object*>(args[3]); |
| if (Runtime::Current()->IsActiveTransaction()) { |
| obj->SetFieldObject<true>(MemberOffset(offset), newValue); |
| } else { |
| obj->SetFieldObject<false>(MemberOffset(offset), newValue); |
| } |
| } else if (name == "int sun.misc.Unsafe.getArrayBaseOffsetForComponentType(java.lang.Class)") { |
| mirror::Class* component = reinterpret_cast<Object*>(args[0])->AsClass(); |
| Primitive::Type primitive_type = component->GetPrimitiveType(); |
| result->SetI(mirror::Array::DataOffset(Primitive::ComponentSize(primitive_type)).Int32Value()); |
| } else if (name == "int sun.misc.Unsafe.getArrayIndexScaleForComponentType(java.lang.Class)") { |
| mirror::Class* component = reinterpret_cast<Object*>(args[0])->AsClass(); |
| Primitive::Type primitive_type = component->GetPrimitiveType(); |
| result->SetI(Primitive::ComponentSize(primitive_type)); |
| } else if (Runtime::Current()->IsActiveTransaction()) { |
| AbortTransaction(self, "Attempt to invoke native method in non-started runtime: %s", |
| name.c_str()); |
| |
| } else { |
| LOG(FATAL) << "Calling native method " << PrettyMethod(method) << " in an unstarted " |
| "non-transactional runtime"; |
| } |
| } |
| |
| static void InterpreterJni(Thread* self, ArtMethod* method, const StringPiece& shorty, |
| Object* receiver, uint32_t* args, JValue* result) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| // TODO: The following enters JNI code using a typedef-ed function rather than the JNI compiler, |
| // it should be removed and JNI compiled stubs used instead. |
| ScopedObjectAccessUnchecked soa(self); |
| if (method->IsStatic()) { |
| if (shorty == "L") { |
| typedef jobject (fntype)(JNIEnv*, jclass); |
| fntype* const fn = reinterpret_cast<fntype*>(const_cast<void*>(method->GetNativeMethod())); |
| ScopedLocalRef<jclass> klass(soa.Env(), |
| soa.AddLocalReference<jclass>(method->GetDeclaringClass())); |
| jobject jresult; |
| { |
| ScopedThreadStateChange tsc(self, kNative); |
| jresult = fn(soa.Env(), klass.get()); |
| } |
| result->SetL(soa.Decode<Object*>(jresult)); |
| } else if (shorty == "V") { |
| typedef void (fntype)(JNIEnv*, jclass); |
| fntype* const fn = reinterpret_cast<fntype*>(const_cast<void*>(method->GetNativeMethod())); |
| ScopedLocalRef<jclass> klass(soa.Env(), |
| soa.AddLocalReference<jclass>(method->GetDeclaringClass())); |
| ScopedThreadStateChange tsc(self, kNative); |
| fn(soa.Env(), klass.get()); |
| } else if (shorty == "Z") { |
| typedef jboolean (fntype)(JNIEnv*, jclass); |
| fntype* const fn = reinterpret_cast<fntype*>(const_cast<void*>(method->GetNativeMethod())); |
| ScopedLocalRef<jclass> klass(soa.Env(), |
| soa.AddLocalReference<jclass>(method->GetDeclaringClass())); |
| ScopedThreadStateChange tsc(self, kNative); |
| result->SetZ(fn(soa.Env(), klass.get())); |
| } else if (shorty == "BI") { |
| typedef jbyte (fntype)(JNIEnv*, jclass, jint); |
| fntype* const fn = reinterpret_cast<fntype*>(const_cast<void*>(method->GetNativeMethod())); |
| ScopedLocalRef<jclass> klass(soa.Env(), |
| soa.AddLocalReference<jclass>(method->GetDeclaringClass())); |
| ScopedThreadStateChange tsc(self, kNative); |
| result->SetB(fn(soa.Env(), klass.get(), args[0])); |
| } else if (shorty == "II") { |
| typedef jint (fntype)(JNIEnv*, jclass, jint); |
| fntype* const fn = reinterpret_cast<fntype*>(const_cast<void*>(method->GetNativeMethod())); |
| ScopedLocalRef<jclass> klass(soa.Env(), |
| soa.AddLocalReference<jclass>(method->GetDeclaringClass())); |
| ScopedThreadStateChange tsc(self, kNative); |
| result->SetI(fn(soa.Env(), klass.get(), args[0])); |
| } else if (shorty == "LL") { |
| typedef jobject (fntype)(JNIEnv*, jclass, jobject); |
| fntype* const fn = reinterpret_cast<fntype*>(const_cast<void*>(method->GetNativeMethod())); |
| ScopedLocalRef<jclass> klass(soa.Env(), |
| soa.AddLocalReference<jclass>(method->GetDeclaringClass())); |
| ScopedLocalRef<jobject> arg0(soa.Env(), |
| soa.AddLocalReference<jobject>(reinterpret_cast<Object*>(args[0]))); |
| jobject jresult; |
| { |
| ScopedThreadStateChange tsc(self, kNative); |
| jresult = fn(soa.Env(), klass.get(), arg0.get()); |
| } |
| result->SetL(soa.Decode<Object*>(jresult)); |
| } else if (shorty == "IIZ") { |
| typedef jint (fntype)(JNIEnv*, jclass, jint, jboolean); |
| fntype* const fn = reinterpret_cast<fntype*>(const_cast<void*>(method->GetNativeMethod())); |
| ScopedLocalRef<jclass> klass(soa.Env(), |
| soa.AddLocalReference<jclass>(method->GetDeclaringClass())); |
| ScopedThreadStateChange tsc(self, kNative); |
| result->SetI(fn(soa.Env(), klass.get(), args[0], args[1])); |
| } else if (shorty == "ILI") { |
| typedef jint (fntype)(JNIEnv*, jclass, jobject, jint); |
| fntype* const fn = reinterpret_cast<fntype*>(const_cast<void*>(method->GetNativeMethod())); |
| ScopedLocalRef<jclass> klass(soa.Env(), |
| soa.AddLocalReference<jclass>(method->GetDeclaringClass())); |
| ScopedLocalRef<jobject> arg0(soa.Env(), |
| soa.AddLocalReference<jobject>(reinterpret_cast<Object*>(args[0]))); |
| ScopedThreadStateChange tsc(self, kNative); |
| result->SetI(fn(soa.Env(), klass.get(), arg0.get(), args[1])); |
| } else if (shorty == "SIZ") { |
| typedef jshort (fntype)(JNIEnv*, jclass, jint, jboolean); |
| fntype* const fn = reinterpret_cast<fntype*>(const_cast<void*>(method->GetNativeMethod())); |
| ScopedLocalRef<jclass> klass(soa.Env(), |
| soa.AddLocalReference<jclass>(method->GetDeclaringClass())); |
| ScopedThreadStateChange tsc(self, kNative); |
| result->SetS(fn(soa.Env(), klass.get(), args[0], args[1])); |
| } else if (shorty == "VIZ") { |
| typedef void (fntype)(JNIEnv*, jclass, jint, jboolean); |
| fntype* const fn = reinterpret_cast<fntype*>(const_cast<void*>(method->GetNativeMethod())); |
| ScopedLocalRef<jclass> klass(soa.Env(), |
| soa.AddLocalReference<jclass>(method->GetDeclaringClass())); |
| ScopedThreadStateChange tsc(self, kNative); |
| fn(soa.Env(), klass.get(), args[0], args[1]); |
| } else if (shorty == "ZLL") { |
| typedef jboolean (fntype)(JNIEnv*, jclass, jobject, jobject); |
| fntype* const fn = reinterpret_cast<fntype*>(const_cast<void*>(method->GetNativeMethod())); |
| ScopedLocalRef<jclass> klass(soa.Env(), |
| soa.AddLocalReference<jclass>(method->GetDeclaringClass())); |
| ScopedLocalRef<jobject> arg0(soa.Env(), |
| soa.AddLocalReference<jobject>(reinterpret_cast<Object*>(args[0]))); |
| ScopedLocalRef<jobject> arg1(soa.Env(), |
| soa.AddLocalReference<jobject>(reinterpret_cast<Object*>(args[1]))); |
| ScopedThreadStateChange tsc(self, kNative); |
| result->SetZ(fn(soa.Env(), klass.get(), arg0.get(), arg1.get())); |
| } else if (shorty == "ZILL") { |
| typedef jboolean (fntype)(JNIEnv*, jclass, jint, jobject, jobject); |
| fntype* const fn = reinterpret_cast<fntype*>(const_cast<void*>(method->GetNativeMethod())); |
| ScopedLocalRef<jclass> klass(soa.Env(), |
| soa.AddLocalReference<jclass>(method->GetDeclaringClass())); |
| ScopedLocalRef<jobject> arg1(soa.Env(), |
| soa.AddLocalReference<jobject>(reinterpret_cast<Object*>(args[1]))); |
| ScopedLocalRef<jobject> arg2(soa.Env(), |
| soa.AddLocalReference<jobject>(reinterpret_cast<Object*>(args[2]))); |
| ScopedThreadStateChange tsc(self, kNative); |
| result->SetZ(fn(soa.Env(), klass.get(), args[0], arg1.get(), arg2.get())); |
| } else if (shorty == "VILII") { |
| typedef void (fntype)(JNIEnv*, jclass, jint, jobject, jint, jint); |
| fntype* const fn = reinterpret_cast<fntype*>(const_cast<void*>(method->GetNativeMethod())); |
| ScopedLocalRef<jclass> klass(soa.Env(), |
| soa.AddLocalReference<jclass>(method->GetDeclaringClass())); |
| ScopedLocalRef<jobject> arg1(soa.Env(), |
| soa.AddLocalReference<jobject>(reinterpret_cast<Object*>(args[1]))); |
| ScopedThreadStateChange tsc(self, kNative); |
| fn(soa.Env(), klass.get(), args[0], arg1.get(), args[2], args[3]); |
| } else if (shorty == "VLILII") { |
| typedef void (fntype)(JNIEnv*, jclass, jobject, jint, jobject, jint, jint); |
| fntype* const fn = reinterpret_cast<fntype*>(const_cast<void*>(method->GetNativeMethod())); |
| ScopedLocalRef<jclass> klass(soa.Env(), |
| soa.AddLocalReference<jclass>(method->GetDeclaringClass())); |
| ScopedLocalRef<jobject> arg0(soa.Env(), |
| soa.AddLocalReference<jobject>(reinterpret_cast<Object*>(args[0]))); |
| ScopedLocalRef<jobject> arg2(soa.Env(), |
| soa.AddLocalReference<jobject>(reinterpret_cast<Object*>(args[2]))); |
| ScopedThreadStateChange tsc(self, kNative); |
| fn(soa.Env(), klass.get(), arg0.get(), args[1], arg2.get(), args[3], args[4]); |
| } else { |
| LOG(FATAL) << "Do something with static native method: " << PrettyMethod(method) |
| << " shorty: " << shorty; |
| } |
| } else { |
| if (shorty == "L") { |
| typedef jobject (fntype)(JNIEnv*, jobject); |
| fntype* const fn = reinterpret_cast<fntype*>(const_cast<void*>(method->GetNativeMethod())); |
| ScopedLocalRef<jobject> rcvr(soa.Env(), |
| soa.AddLocalReference<jobject>(receiver)); |
| jobject jresult; |
| { |
| ScopedThreadStateChange tsc(self, kNative); |
| jresult = fn(soa.Env(), rcvr.get()); |
| } |
| result->SetL(soa.Decode<Object*>(jresult)); |
| } else if (shorty == "V") { |
| typedef void (fntype)(JNIEnv*, jobject); |
| fntype* const fn = reinterpret_cast<fntype*>(const_cast<void*>(method->GetNativeMethod())); |
| ScopedLocalRef<jobject> rcvr(soa.Env(), |
| soa.AddLocalReference<jobject>(receiver)); |
| ScopedThreadStateChange tsc(self, kNative); |
| fn(soa.Env(), rcvr.get()); |
| } else if (shorty == "LL") { |
| typedef jobject (fntype)(JNIEnv*, jobject, jobject); |
| fntype* const fn = reinterpret_cast<fntype*>(const_cast<void*>(method->GetNativeMethod())); |
| ScopedLocalRef<jobject> rcvr(soa.Env(), |
| soa.AddLocalReference<jobject>(receiver)); |
| ScopedLocalRef<jobject> arg0(soa.Env(), |
| soa.AddLocalReference<jobject>(reinterpret_cast<Object*>(args[0]))); |
| jobject jresult; |
| { |
| ScopedThreadStateChange tsc(self, kNative); |
| jresult = fn(soa.Env(), rcvr.get(), arg0.get()); |
| } |
| result->SetL(soa.Decode<Object*>(jresult)); |
| ScopedThreadStateChange tsc(self, kNative); |
| } else if (shorty == "III") { |
| typedef jint (fntype)(JNIEnv*, jobject, jint, jint); |
| fntype* const fn = reinterpret_cast<fntype*>(const_cast<void*>(method->GetNativeMethod())); |
| ScopedLocalRef<jobject> rcvr(soa.Env(), |
| soa.AddLocalReference<jobject>(receiver)); |
| ScopedThreadStateChange tsc(self, kNative); |
| result->SetI(fn(soa.Env(), rcvr.get(), args[0], args[1])); |
| } else { |
| LOG(FATAL) << "Do something with native method: " << PrettyMethod(method) |
| << " shorty: " << shorty; |
| } |
| } |
| } |
| |
| enum InterpreterImplKind { |
| kSwitchImpl, // Switch-based interpreter implementation. |
| kComputedGotoImplKind // Computed-goto-based interpreter implementation. |
| }; |
| |
| #if !defined(__clang__) |
| static constexpr InterpreterImplKind kInterpreterImplKind = kComputedGotoImplKind; |
| #else |
| // Clang 3.4 fails to build the goto interpreter implementation. |
| static constexpr InterpreterImplKind kInterpreterImplKind = kSwitchImpl; |
| template<bool do_access_check, bool transaction_active> |
| JValue ExecuteGotoImpl(Thread* self, MethodHelper& mh, const DexFile::CodeItem* code_item, |
| ShadowFrame& shadow_frame, JValue result_register) { |
| LOG(FATAL) << "UNREACHABLE"; |
| exit(0); |
| } |
| // Explicit definitions of ExecuteGotoImpl. |
| template<> SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) |
| JValue ExecuteGotoImpl<true, false>(Thread* self, MethodHelper& mh, |
| const DexFile::CodeItem* code_item, |
| ShadowFrame& shadow_frame, JValue result_register); |
| template<> SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) |
| JValue ExecuteGotoImpl<false, false>(Thread* self, MethodHelper& mh, |
| const DexFile::CodeItem* code_item, |
| ShadowFrame& shadow_frame, JValue result_register); |
| template<> SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) |
| JValue ExecuteGotoImpl<true, true>(Thread* self, MethodHelper& mh, |
| const DexFile::CodeItem* code_item, |
| ShadowFrame& shadow_frame, JValue result_register); |
| template<> SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) |
| JValue ExecuteGotoImpl<false, true>(Thread* self, MethodHelper& mh, |
| const DexFile::CodeItem* code_item, |
| ShadowFrame& shadow_frame, JValue result_register); |
| #endif |
| |
| static JValue Execute(Thread* self, MethodHelper& mh, const DexFile::CodeItem* code_item, |
| ShadowFrame& shadow_frame, JValue result_register) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| |
| static inline JValue Execute(Thread* self, MethodHelper& mh, const DexFile::CodeItem* code_item, |
| ShadowFrame& shadow_frame, JValue result_register) { |
| DCHECK(shadow_frame.GetMethod() == mh.GetMethod() || |
| shadow_frame.GetMethod()->GetDeclaringClass()->IsProxyClass()); |
| DCHECK(!shadow_frame.GetMethod()->IsAbstract()); |
| DCHECK(!shadow_frame.GetMethod()->IsNative()); |
| shadow_frame.GetMethod()->GetDeclaringClass()->AssertInitializedOrInitializingInThread(self); |
| |
| bool transaction_active = Runtime::Current()->IsActiveTransaction(); |
| if (LIKELY(shadow_frame.GetMethod()->IsPreverified())) { |
| // Enter the "without access check" interpreter. |
| if (kInterpreterImplKind == kSwitchImpl) { |
| if (transaction_active) { |
| return ExecuteSwitchImpl<false, true>(self, mh, code_item, shadow_frame, result_register); |
| } else { |
| return ExecuteSwitchImpl<false, false>(self, mh, code_item, shadow_frame, result_register); |
| } |
| } else { |
| DCHECK_EQ(kInterpreterImplKind, kComputedGotoImplKind); |
| if (transaction_active) { |
| return ExecuteGotoImpl<false, true>(self, mh, code_item, shadow_frame, result_register); |
| } else { |
| return ExecuteGotoImpl<false, false>(self, mh, code_item, shadow_frame, result_register); |
| } |
| } |
| } else { |
| // Enter the "with access check" interpreter. |
| if (kInterpreterImplKind == kSwitchImpl) { |
| if (transaction_active) { |
| return ExecuteSwitchImpl<true, true>(self, mh, code_item, shadow_frame, result_register); |
| } else { |
| return ExecuteSwitchImpl<true, false>(self, mh, code_item, shadow_frame, result_register); |
| } |
| } else { |
| DCHECK_EQ(kInterpreterImplKind, kComputedGotoImplKind); |
| if (transaction_active) { |
| return ExecuteGotoImpl<true, true>(self, mh, code_item, shadow_frame, result_register); |
| } else { |
| return ExecuteGotoImpl<true, false>(self, mh, code_item, shadow_frame, result_register); |
| } |
| } |
| } |
| } |
| |
| void EnterInterpreterFromInvoke(Thread* self, ArtMethod* method, Object* receiver, |
| uint32_t* args, JValue* result) { |
| DCHECK_EQ(self, Thread::Current()); |
| bool implicit_check = !Runtime::Current()->ExplicitStackOverflowChecks(); |
| if (UNLIKELY(__builtin_frame_address(0) < self->GetStackEndForInterpreter(implicit_check))) { |
| ThrowStackOverflowError(self); |
| return; |
| } |
| |
| const char* old_cause = self->StartAssertNoThreadSuspension("EnterInterpreterFromInvoke"); |
| const DexFile::CodeItem* code_item = method->GetCodeItem(); |
| uint16_t num_regs; |
| uint16_t num_ins; |
| if (code_item != NULL) { |
| num_regs = code_item->registers_size_; |
| num_ins = code_item->ins_size_; |
| } else if (method->IsAbstract()) { |
| self->EndAssertNoThreadSuspension(old_cause); |
| ThrowAbstractMethodError(method); |
| return; |
| } else { |
| DCHECK(method->IsNative()); |
| num_regs = num_ins = ArtMethod::NumArgRegisters(method->GetShorty()); |
| if (!method->IsStatic()) { |
| num_regs++; |
| num_ins++; |
| } |
| } |
| // Set up shadow frame with matching number of reference slots to vregs. |
| ShadowFrame* last_shadow_frame = self->GetManagedStack()->GetTopShadowFrame(); |
| void* memory = alloca(ShadowFrame::ComputeSize(num_regs)); |
| ShadowFrame* shadow_frame(ShadowFrame::Create(num_regs, last_shadow_frame, method, 0, memory)); |
| self->PushShadowFrame(shadow_frame); |
| |
| size_t cur_reg = num_regs - num_ins; |
| if (!method->IsStatic()) { |
| CHECK(receiver != NULL); |
| shadow_frame->SetVRegReference(cur_reg, receiver); |
| ++cur_reg; |
| } |
| uint32_t shorty_len = 0; |
| const char* shorty = method->GetShorty(&shorty_len); |
| for (size_t shorty_pos = 0, arg_pos = 0; cur_reg < num_regs; ++shorty_pos, ++arg_pos, cur_reg++) { |
| DCHECK_LT(shorty_pos + 1, shorty_len); |
| switch (shorty[shorty_pos + 1]) { |
| case 'L': { |
| Object* o = reinterpret_cast<StackReference<Object>*>(&args[arg_pos])->AsMirrorPtr(); |
| shadow_frame->SetVRegReference(cur_reg, o); |
| break; |
| } |
| case 'J': case 'D': { |
| uint64_t wide_value = (static_cast<uint64_t>(args[arg_pos + 1]) << 32) | args[arg_pos]; |
| shadow_frame->SetVRegLong(cur_reg, wide_value); |
| cur_reg++; |
| arg_pos++; |
| break; |
| } |
| default: |
| shadow_frame->SetVReg(cur_reg, args[arg_pos]); |
| break; |
| } |
| } |
| self->EndAssertNoThreadSuspension(old_cause); |
| // Do this after populating the shadow frame in case EnsureInitialized causes a GC. |
| if (method->IsStatic() && UNLIKELY(!method->GetDeclaringClass()->IsInitialized())) { |
| ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); |
| StackHandleScope<1> hs(self); |
| Handle<mirror::Class> h_class(hs.NewHandle(method->GetDeclaringClass())); |
| if (UNLIKELY(!class_linker->EnsureInitialized(self, h_class, true, true))) { |
| CHECK(self->IsExceptionPending()); |
| self->PopShadowFrame(); |
| return; |
| } |
| } |
| if (LIKELY(!method->IsNative())) { |
| StackHandleScope<1> hs(self); |
| MethodHelper mh(hs.NewHandle(method)); |
| JValue r = Execute(self, mh, code_item, *shadow_frame, JValue()); |
| if (result != NULL) { |
| *result = r; |
| } |
| } else { |
| // We don't expect to be asked to interpret native code (which is entered via a JNI compiler |
| // generated stub) except during testing and image writing. |
| // Update args to be the args in the shadow frame since the input ones could hold stale |
| // references pointers due to moving GC. |
| args = shadow_frame->GetVRegArgs(method->IsStatic() ? 0 : 1); |
| if (!Runtime::Current()->IsStarted()) { |
| UnstartedRuntimeJni(self, method, receiver, args, result); |
| } else { |
| InterpreterJni(self, method, shorty, receiver, args, result); |
| } |
| } |
| self->PopShadowFrame(); |
| } |
| |
| void EnterInterpreterFromDeoptimize(Thread* self, ShadowFrame* shadow_frame, JValue* ret_val) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| JValue value; |
| value.SetJ(ret_val->GetJ()); // Set value to last known result in case the shadow frame chain is empty. |
| while (shadow_frame != NULL) { |
| self->SetTopOfShadowStack(shadow_frame); |
| StackHandleScope<1> hs(self); |
| MethodHelper mh(hs.NewHandle(shadow_frame->GetMethod())); |
| const DexFile::CodeItem* code_item = mh.GetMethod()->GetCodeItem(); |
| value = Execute(self, mh, code_item, *shadow_frame, value); |
| ShadowFrame* old_frame = shadow_frame; |
| shadow_frame = shadow_frame->GetLink(); |
| delete old_frame; |
| } |
| ret_val->SetJ(value.GetJ()); |
| } |
| |
| JValue EnterInterpreterFromStub(Thread* self, MethodHelper& mh, const DexFile::CodeItem* code_item, |
| ShadowFrame& shadow_frame) { |
| DCHECK_EQ(self, Thread::Current()); |
| bool implicit_check = !Runtime::Current()->ExplicitStackOverflowChecks(); |
| if (UNLIKELY(__builtin_frame_address(0) < self->GetStackEndForInterpreter(implicit_check))) { |
| ThrowStackOverflowError(self); |
| return JValue(); |
| } |
| |
| return Execute(self, mh, code_item, shadow_frame, JValue()); |
| } |
| |
| extern "C" void artInterpreterToInterpreterBridge(Thread* self, MethodHelper& mh, |
| const DexFile::CodeItem* code_item, |
| ShadowFrame* shadow_frame, JValue* result) { |
| bool implicit_check = !Runtime::Current()->ExplicitStackOverflowChecks(); |
| if (UNLIKELY(__builtin_frame_address(0) < self->GetStackEndForInterpreter(implicit_check))) { |
| ThrowStackOverflowError(self); |
| return; |
| } |
| |
| self->PushShadowFrame(shadow_frame); |
| DCHECK_EQ(shadow_frame->GetMethod(), mh.Get()); |
| // Ensure static methods are initialized. |
| if (mh.Get()->IsStatic()) { |
| mirror::Class* declaring_class = mh.Get()->GetDeclaringClass(); |
| if (UNLIKELY(!declaring_class->IsInitialized())) { |
| StackHandleScope<1> hs(self); |
| HandleWrapper<Class> h_declaring_class(hs.NewHandleWrapper(&declaring_class)); |
| if (UNLIKELY(!Runtime::Current()->GetClassLinker()->EnsureInitialized( |
| self, h_declaring_class, true, true))) { |
| DCHECK(self->IsExceptionPending()); |
| self->PopShadowFrame(); |
| return; |
| } |
| CHECK(h_declaring_class->IsInitializing()); |
| } |
| } |
| |
| if (LIKELY(!mh.Get()->IsNative())) { |
| result->SetJ(Execute(self, mh, code_item, *shadow_frame, JValue()).GetJ()); |
| } else { |
| // We don't expect to be asked to interpret native code (which is entered via a JNI compiler |
| // generated stub) except during testing and image writing. |
| CHECK(!Runtime::Current()->IsStarted()); |
| Object* receiver = mh.Get()->IsStatic() ? nullptr : shadow_frame->GetVRegReference(0); |
| uint32_t* args = shadow_frame->GetVRegArgs(mh.Get()->IsStatic() ? 0 : 1); |
| UnstartedRuntimeJni(self, mh.Get(), receiver, args, result); |
| } |
| |
| self->PopShadowFrame(); |
| } |
| |
| } // namespace interpreter |
| } // namespace art |