| /* |
| * 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. |
| */ |
| |
| #ifndef ART_RUNTIME_ENTRYPOINTS_ENTRYPOINT_UTILS_H_ |
| #define ART_RUNTIME_ENTRYPOINTS_ENTRYPOINT_UTILS_H_ |
| |
| #include "base/macros.h" |
| #include "class_linker.h" |
| #include "common_throws.h" |
| #include "dex_file.h" |
| #include "indirect_reference_table.h" |
| #include "invoke_type.h" |
| #include "jni_internal.h" |
| #include "mirror/art_method.h" |
| #include "mirror/array.h" |
| #include "mirror/class-inl.h" |
| #include "mirror/throwable.h" |
| #include "object_utils.h" |
| |
| #include "thread.h" |
| |
| namespace art { |
| |
| namespace mirror { |
| class Class; |
| class ArtField; |
| class Object; |
| } // namespace mirror |
| |
| static inline bool CheckObjectAlloc(uint32_t type_idx, mirror::ArtMethod* method, |
| Thread* self, |
| bool access_check, |
| mirror::Class** klass_ptr) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| mirror::Class* klass = method->GetDexCacheResolvedTypes()->GetWithoutChecks(type_idx); |
| Runtime* runtime = Runtime::Current(); |
| if (UNLIKELY(klass == NULL)) { |
| klass = runtime->GetClassLinker()->ResolveType(type_idx, method); |
| if (klass == NULL) { |
| DCHECK(self->IsExceptionPending()); |
| return false; // Failure |
| } |
| } |
| if (access_check) { |
| if (UNLIKELY(!klass->IsInstantiable())) { |
| ThrowLocation throw_location = self->GetCurrentLocationForThrow(); |
| self->ThrowNewException(throw_location, "Ljava/lang/InstantiationError;", |
| PrettyDescriptor(klass).c_str()); |
| return false; // Failure |
| } |
| mirror::Class* referrer = method->GetDeclaringClass(); |
| if (UNLIKELY(!referrer->CanAccess(klass))) { |
| ThrowIllegalAccessErrorClass(referrer, klass); |
| return false; // Failure |
| } |
| } |
| if (!klass->IsInitialized() && |
| !runtime->GetClassLinker()->EnsureInitialized(klass, true, true)) { |
| DCHECK(self->IsExceptionPending()); |
| return false; // Failure |
| } |
| *klass_ptr = klass; |
| return true; |
| } |
| |
| // Given the context of a calling Method, use its DexCache to resolve a type to a Class. If it |
| // cannot be resolved, throw an error. If it can, use it to create an instance. |
| // When verification/compiler hasn't been able to verify access, optionally perform an access |
| // check. |
| static inline mirror::Object* AllocObjectFromCode(uint32_t type_idx, mirror::ArtMethod* method, |
| Thread* self, |
| bool access_check) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| mirror::Class* klass; |
| if (UNLIKELY(!CheckObjectAlloc(type_idx, method, self, access_check, &klass))) { |
| return NULL; |
| } |
| return klass->Alloc<kMovingCollector, false>(self); |
| } |
| |
| static inline mirror::Object* AllocObjectFromCodeInstrumented(uint32_t type_idx, mirror::ArtMethod* method, |
| Thread* self, |
| bool access_check) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| mirror::Class* klass; |
| if (UNLIKELY(!CheckObjectAlloc(type_idx, method, self, access_check, &klass))) { |
| return NULL; |
| } |
| return klass->Alloc<kMovingCollector, true>(self); |
| } |
| |
| static inline bool CheckArrayAlloc(uint32_t type_idx, mirror::ArtMethod* method, |
| int32_t component_count, |
| bool access_check, mirror::Class** klass_ptr) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| if (UNLIKELY(component_count < 0)) { |
| ThrowNegativeArraySizeException(component_count); |
| return false; // Failure |
| } |
| mirror::Class* klass = method->GetDexCacheResolvedTypes()->GetWithoutChecks(type_idx); |
| if (UNLIKELY(klass == NULL)) { // Not in dex cache so try to resolve |
| klass = Runtime::Current()->GetClassLinker()->ResolveType(type_idx, method); |
| if (klass == NULL) { // Error |
| DCHECK(Thread::Current()->IsExceptionPending()); |
| return false; // Failure |
| } |
| CHECK(klass->IsArrayClass()) << PrettyClass(klass); |
| } |
| if (access_check) { |
| mirror::Class* referrer = method->GetDeclaringClass(); |
| if (UNLIKELY(!referrer->CanAccess(klass))) { |
| ThrowIllegalAccessErrorClass(referrer, klass); |
| return false; // Failure |
| } |
| } |
| *klass_ptr = klass; |
| return true; |
| } |
| |
| // Given the context of a calling Method, use its DexCache to resolve a type to an array Class. If |
| // it cannot be resolved, throw an error. If it can, use it to create an array. |
| // When verification/compiler hasn't been able to verify access, optionally perform an access |
| // check. |
| static inline mirror::Array* AllocArrayFromCode(uint32_t type_idx, mirror::ArtMethod* method, |
| int32_t component_count, |
| Thread* self, bool access_check) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| mirror::Class* klass; |
| if (UNLIKELY(!CheckArrayAlloc(type_idx, method, component_count, access_check, &klass))) { |
| return NULL; |
| } |
| return mirror::Array::Alloc<kMovingCollector, false>(self, klass, component_count); |
| } |
| |
| static inline mirror::Array* AllocArrayFromCodeInstrumented(uint32_t type_idx, mirror::ArtMethod* method, |
| int32_t component_count, |
| Thread* self, bool access_check) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| mirror::Class* klass; |
| if (UNLIKELY(!CheckArrayAlloc(type_idx, method, component_count, access_check, &klass))) { |
| return NULL; |
| } |
| return mirror::Array::Alloc<kMovingCollector, true>(self, klass, component_count); |
| } |
| |
| extern mirror::Array* CheckAndAllocArrayFromCode(uint32_t type_idx, mirror::ArtMethod* method, |
| int32_t component_count, |
| Thread* self, bool access_check) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| |
| extern mirror::Array* CheckAndAllocArrayFromCodeInstrumented(uint32_t type_idx, mirror::ArtMethod* method, |
| int32_t component_count, |
| Thread* self, bool access_check) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| |
| // Type of find field operation for fast and slow case. |
| enum FindFieldType { |
| InstanceObjectRead, |
| InstanceObjectWrite, |
| InstancePrimitiveRead, |
| InstancePrimitiveWrite, |
| StaticObjectRead, |
| StaticObjectWrite, |
| StaticPrimitiveRead, |
| StaticPrimitiveWrite, |
| }; |
| |
| template<FindFieldType type, bool access_check> |
| static inline mirror::ArtField* FindFieldFromCode(uint32_t field_idx, const mirror::ArtMethod* referrer, |
| Thread* self, size_t expected_size) { |
| bool is_primitive; |
| bool is_set; |
| bool is_static; |
| switch (type) { |
| case InstanceObjectRead: is_primitive = false; is_set = false; is_static = false; break; |
| case InstanceObjectWrite: is_primitive = false; is_set = true; is_static = false; break; |
| case InstancePrimitiveRead: is_primitive = true; is_set = false; is_static = false; break; |
| case InstancePrimitiveWrite: is_primitive = true; is_set = true; is_static = false; break; |
| case StaticObjectRead: is_primitive = false; is_set = false; is_static = true; break; |
| case StaticObjectWrite: is_primitive = false; is_set = true; is_static = true; break; |
| case StaticPrimitiveRead: is_primitive = true; is_set = false; is_static = true; break; |
| case StaticPrimitiveWrite: // Keep GCC happy by having a default handler, fall-through. |
| default: is_primitive = true; is_set = true; is_static = true; break; |
| } |
| ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); |
| mirror::ArtField* resolved_field = class_linker->ResolveField(field_idx, referrer, is_static); |
| if (UNLIKELY(resolved_field == nullptr)) { |
| DCHECK(self->IsExceptionPending()); // Throw exception and unwind. |
| return nullptr; // Failure. |
| } |
| mirror::Class* fields_class = resolved_field->GetDeclaringClass(); |
| if (access_check) { |
| if (UNLIKELY(resolved_field->IsStatic() != is_static)) { |
| ThrowIncompatibleClassChangeErrorField(resolved_field, is_static, referrer); |
| return nullptr; |
| } |
| mirror::Class* referring_class = referrer->GetDeclaringClass(); |
| if (UNLIKELY(!referring_class->CanAccess(fields_class) || |
| !referring_class->CanAccessMember(fields_class, |
| resolved_field->GetAccessFlags()))) { |
| // The referring class can't access the resolved field, this may occur as a result of a |
| // protected field being made public by a sub-class. Resort to the dex file to determine |
| // the correct class for the access check. |
| const DexFile& dex_file = *referring_class->GetDexCache()->GetDexFile(); |
| fields_class = class_linker->ResolveType(dex_file, |
| dex_file.GetFieldId(field_idx).class_idx_, |
| referring_class); |
| if (UNLIKELY(!referring_class->CanAccess(fields_class))) { |
| ThrowIllegalAccessErrorClass(referring_class, fields_class); |
| return nullptr; // failure |
| } else if (UNLIKELY(!referring_class->CanAccessMember(fields_class, |
| resolved_field->GetAccessFlags()))) { |
| ThrowIllegalAccessErrorField(referring_class, resolved_field); |
| return nullptr; // failure |
| } |
| } |
| if (UNLIKELY(is_set && resolved_field->IsFinal() && (fields_class != referring_class))) { |
| ThrowIllegalAccessErrorFinalField(referrer, resolved_field); |
| return nullptr; // failure |
| } else { |
| FieldHelper fh(resolved_field); |
| if (UNLIKELY(fh.IsPrimitiveType() != is_primitive || |
| fh.FieldSize() != expected_size)) { |
| ThrowLocation throw_location = self->GetCurrentLocationForThrow(); |
| DCHECK(throw_location.GetMethod() == referrer); |
| self->ThrowNewExceptionF(throw_location, "Ljava/lang/NoSuchFieldError;", |
| "Attempted read of %zd-bit %s on field '%s'", |
| expected_size * (32 / sizeof(int32_t)), |
| is_primitive ? "primitive" : "non-primitive", |
| PrettyField(resolved_field, true).c_str()); |
| return nullptr; // failure |
| } |
| } |
| } |
| if (!is_static) { |
| // instance fields must be being accessed on an initialized class |
| return resolved_field; |
| } else { |
| // If the class is initialized we're done. |
| if (LIKELY(fields_class->IsInitialized())) { |
| return resolved_field; |
| } else if (LIKELY(class_linker->EnsureInitialized(fields_class, true, true))) { |
| // Otherwise let's ensure the class is initialized before resolving the field. |
| return resolved_field; |
| } else { |
| DCHECK(self->IsExceptionPending()); // Throw exception and unwind |
| return nullptr; // failure |
| } |
| } |
| } |
| |
| // Explicit template declarations of FindFieldFromCode for all field access types. |
| #define EXPLICIT_FIND_FIELD_FROM_CODE_TEMPLATE_DECL(_type, _access_check) \ |
| template SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) ALWAYS_INLINE \ |
| static mirror::ArtField* FindFieldFromCode<_type, _access_check>(uint32_t field_idx, \ |
| const mirror::ArtMethod* referrer, \ |
| Thread* self, size_t expected_size) \ |
| |
| #define EXPLICIT_FIND_FIELD_FROM_CODE_TYPED_TEMPLATE_DECL(_type) \ |
| EXPLICIT_FIND_FIELD_FROM_CODE_TEMPLATE_DECL(_type, false); \ |
| EXPLICIT_FIND_FIELD_FROM_CODE_TEMPLATE_DECL(_type, true) |
| |
| EXPLICIT_FIND_FIELD_FROM_CODE_TYPED_TEMPLATE_DECL(InstanceObjectRead); |
| EXPLICIT_FIND_FIELD_FROM_CODE_TYPED_TEMPLATE_DECL(InstanceObjectWrite); |
| EXPLICIT_FIND_FIELD_FROM_CODE_TYPED_TEMPLATE_DECL(InstancePrimitiveRead); |
| EXPLICIT_FIND_FIELD_FROM_CODE_TYPED_TEMPLATE_DECL(InstancePrimitiveWrite); |
| EXPLICIT_FIND_FIELD_FROM_CODE_TYPED_TEMPLATE_DECL(StaticObjectRead); |
| EXPLICIT_FIND_FIELD_FROM_CODE_TYPED_TEMPLATE_DECL(StaticObjectWrite); |
| EXPLICIT_FIND_FIELD_FROM_CODE_TYPED_TEMPLATE_DECL(StaticPrimitiveRead); |
| EXPLICIT_FIND_FIELD_FROM_CODE_TYPED_TEMPLATE_DECL(StaticPrimitiveWrite); |
| |
| #undef EXPLICIT_FIND_FIELD_FROM_CODE_TYPED_TEMPLATE_DECL |
| #undef EXPLICIT_FIND_FIELD_FROM_CODE_TEMPLATE_DECL |
| |
| template<InvokeType type, bool access_check> |
| static inline mirror::ArtMethod* FindMethodFromCode(uint32_t method_idx, mirror::Object* this_object, |
| mirror::ArtMethod* referrer, Thread* self) { |
| ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); |
| mirror::ArtMethod* resolved_method = class_linker->ResolveMethod(method_idx, referrer, type); |
| if (UNLIKELY(resolved_method == nullptr)) { |
| DCHECK(self->IsExceptionPending()); // Throw exception and unwind. |
| return nullptr; // Failure. |
| } else if (UNLIKELY(this_object == nullptr && type != kStatic)) { |
| // Maintain interpreter-like semantics where NullPointerException is thrown |
| // after potential NoSuchMethodError from class linker. |
| ThrowLocation throw_location = self->GetCurrentLocationForThrow(); |
| DCHECK(referrer == throw_location.GetMethod()); |
| ThrowNullPointerExceptionForMethodAccess(throw_location, method_idx, type); |
| return nullptr; // Failure. |
| } else if (access_check) { |
| // Incompatible class change should have been handled in resolve method. |
| if (UNLIKELY(resolved_method->CheckIncompatibleClassChange(type))) { |
| ThrowIncompatibleClassChangeError(type, resolved_method->GetInvokeType(), resolved_method, |
| referrer); |
| return nullptr; // Failure. |
| } |
| mirror::Class* methods_class = resolved_method->GetDeclaringClass(); |
| mirror::Class* referring_class = referrer->GetDeclaringClass(); |
| if (UNLIKELY(!referring_class->CanAccess(methods_class) || |
| !referring_class->CanAccessMember(methods_class, |
| resolved_method->GetAccessFlags()))) { |
| // The referring class can't access the resolved method, this may occur as a result of a |
| // protected method being made public by implementing an interface that re-declares the |
| // method public. Resort to the dex file to determine the correct class for the access check |
| const DexFile& dex_file = *referring_class->GetDexCache()->GetDexFile(); |
| ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); |
| methods_class = class_linker->ResolveType(dex_file, |
| dex_file.GetMethodId(method_idx).class_idx_, |
| referring_class); |
| if (UNLIKELY(!referring_class->CanAccess(methods_class))) { |
| ThrowIllegalAccessErrorClassForMethodDispatch(referring_class, methods_class, |
| referrer, resolved_method, type); |
| return nullptr; // Failure. |
| } else if (UNLIKELY(!referring_class->CanAccessMember(methods_class, |
| resolved_method->GetAccessFlags()))) { |
| ThrowIllegalAccessErrorMethod(referring_class, resolved_method); |
| return nullptr; // Failure. |
| } |
| } |
| } |
| switch (type) { |
| case kStatic: |
| case kDirect: |
| return resolved_method; |
| case kVirtual: { |
| mirror::ObjectArray<mirror::ArtMethod>* vtable = this_object->GetClass()->GetVTable(); |
| uint16_t vtable_index = resolved_method->GetMethodIndex(); |
| if (access_check && |
| (vtable == nullptr || vtable_index >= static_cast<uint32_t>(vtable->GetLength()))) { |
| // Behavior to agree with that of the verifier. |
| MethodHelper mh(resolved_method); |
| ThrowNoSuchMethodError(type, resolved_method->GetDeclaringClass(), mh.GetName(), |
| mh.GetSignature()); |
| return nullptr; // Failure. |
| } |
| DCHECK(vtable != nullptr); |
| return vtable->GetWithoutChecks(vtable_index); |
| } |
| case kSuper: { |
| mirror::Class* super_class = referrer->GetDeclaringClass()->GetSuperClass(); |
| uint16_t vtable_index = resolved_method->GetMethodIndex(); |
| mirror::ObjectArray<mirror::ArtMethod>* vtable; |
| if (access_check) { |
| // Check existence of super class. |
| vtable = (super_class != nullptr) ? super_class->GetVTable() : nullptr; |
| if (vtable == nullptr || vtable_index >= static_cast<uint32_t>(vtable->GetLength())) { |
| // Behavior to agree with that of the verifier. |
| MethodHelper mh(resolved_method); |
| ThrowNoSuchMethodError(type, resolved_method->GetDeclaringClass(), mh.GetName(), |
| mh.GetSignature()); |
| return nullptr; // Failure. |
| } |
| } else { |
| // Super class must exist. |
| DCHECK(super_class != nullptr); |
| vtable = super_class->GetVTable(); |
| } |
| DCHECK(vtable != nullptr); |
| return vtable->GetWithoutChecks(vtable_index); |
| } |
| case kInterface: { |
| uint32_t imt_index = resolved_method->GetDexMethodIndex() % ClassLinker::kImtSize; |
| mirror::ObjectArray<mirror::ArtMethod>* imt_table = this_object->GetClass()->GetImTable(); |
| mirror::ArtMethod* imt_method = imt_table->Get(imt_index); |
| if (!imt_method->IsImtConflictMethod()) { |
| return imt_method; |
| } else { |
| mirror::ArtMethod* interface_method = |
| this_object->GetClass()->FindVirtualMethodForInterface(resolved_method); |
| if (UNLIKELY(interface_method == nullptr)) { |
| ThrowIncompatibleClassChangeErrorClassForInterfaceDispatch(resolved_method, this_object, |
| referrer); |
| return nullptr; // Failure. |
| } else { |
| return interface_method; |
| } |
| } |
| } |
| default: |
| LOG(FATAL) << "Unknown invoke type " << type; |
| return nullptr; // Failure. |
| } |
| } |
| |
| // Explicit template declarations of FindMethodFromCode for all invoke types. |
| #define EXPLICIT_FIND_METHOD_FROM_CODE_TEMPLATE_DECL(_type, _access_check) \ |
| template SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) ALWAYS_INLINE \ |
| static mirror::ArtMethod* FindMethodFromCode<_type, _access_check>(uint32_t method_idx, \ |
| mirror::Object* this_object, \ |
| mirror::ArtMethod* referrer, \ |
| Thread* self) |
| #define EXPLICIT_FIND_METHOD_FROM_CODE_TYPED_TEMPLATE_DECL(_type) \ |
| EXPLICIT_FIND_METHOD_FROM_CODE_TEMPLATE_DECL(_type, false); \ |
| EXPLICIT_FIND_METHOD_FROM_CODE_TEMPLATE_DECL(_type, true) |
| |
| EXPLICIT_FIND_METHOD_FROM_CODE_TYPED_TEMPLATE_DECL(kStatic); |
| EXPLICIT_FIND_METHOD_FROM_CODE_TYPED_TEMPLATE_DECL(kDirect); |
| EXPLICIT_FIND_METHOD_FROM_CODE_TYPED_TEMPLATE_DECL(kVirtual); |
| EXPLICIT_FIND_METHOD_FROM_CODE_TYPED_TEMPLATE_DECL(kSuper); |
| EXPLICIT_FIND_METHOD_FROM_CODE_TYPED_TEMPLATE_DECL(kInterface); |
| |
| #undef EXPLICIT_FIND_METHOD_FROM_CODE_TYPED_TEMPLATE_DECL |
| #undef EXPLICIT_FIND_METHOD_FROM_CODE_TEMPLATE_DECL |
| |
| // Fast path field resolution that can't initialize classes or throw exceptions. |
| static inline mirror::ArtField* FindFieldFast(uint32_t field_idx, |
| const mirror::ArtMethod* referrer, |
| FindFieldType type, size_t expected_size) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| mirror::ArtField* resolved_field = |
| referrer->GetDeclaringClass()->GetDexCache()->GetResolvedField(field_idx); |
| if (UNLIKELY(resolved_field == NULL)) { |
| return NULL; |
| } |
| mirror::Class* fields_class = resolved_field->GetDeclaringClass(); |
| // Check class is initiliazed or initializing. |
| if (UNLIKELY(!fields_class->IsInitializing())) { |
| return NULL; |
| } |
| // Check for incompatible class change. |
| bool is_primitive; |
| bool is_set; |
| bool is_static; |
| switch (type) { |
| case InstanceObjectRead: is_primitive = false; is_set = false; is_static = false; break; |
| case InstanceObjectWrite: is_primitive = false; is_set = true; is_static = false; break; |
| case InstancePrimitiveRead: is_primitive = true; is_set = false; is_static = false; break; |
| case InstancePrimitiveWrite: is_primitive = true; is_set = true; is_static = false; break; |
| case StaticObjectRead: is_primitive = false; is_set = false; is_static = true; break; |
| case StaticObjectWrite: is_primitive = false; is_set = true; is_static = true; break; |
| case StaticPrimitiveRead: is_primitive = true; is_set = false; is_static = true; break; |
| case StaticPrimitiveWrite: is_primitive = true; is_set = true; is_static = true; break; |
| default: |
| LOG(FATAL) << "UNREACHABLE"; // Assignment below to avoid GCC warnings. |
| is_primitive = true; |
| is_set = true; |
| is_static = true; |
| break; |
| } |
| if (UNLIKELY(resolved_field->IsStatic() != is_static)) { |
| // Incompatible class change. |
| return NULL; |
| } |
| mirror::Class* referring_class = referrer->GetDeclaringClass(); |
| if (UNLIKELY(!referring_class->CanAccess(fields_class) || |
| !referring_class->CanAccessMember(fields_class, |
| resolved_field->GetAccessFlags()) || |
| (is_set && resolved_field->IsFinal() && (fields_class != referring_class)))) { |
| // Illegal access. |
| return NULL; |
| } |
| FieldHelper fh(resolved_field); |
| if (UNLIKELY(fh.IsPrimitiveType() != is_primitive || |
| fh.FieldSize() != expected_size)) { |
| return NULL; |
| } |
| return resolved_field; |
| } |
| |
| // Fast path method resolution that can't throw exceptions. |
| static inline mirror::ArtMethod* FindMethodFast(uint32_t method_idx, |
| mirror::Object* this_object, |
| const mirror::ArtMethod* referrer, |
| bool access_check, InvokeType type) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| bool is_direct = type == kStatic || type == kDirect; |
| if (UNLIKELY(this_object == NULL && !is_direct)) { |
| return NULL; |
| } |
| mirror::ArtMethod* resolved_method = |
| referrer->GetDeclaringClass()->GetDexCache()->GetResolvedMethod(method_idx); |
| if (UNLIKELY(resolved_method == NULL)) { |
| return NULL; |
| } |
| if (access_check) { |
| // Check for incompatible class change errors and access. |
| bool icce = resolved_method->CheckIncompatibleClassChange(type); |
| if (UNLIKELY(icce)) { |
| return NULL; |
| } |
| mirror::Class* methods_class = resolved_method->GetDeclaringClass(); |
| mirror::Class* referring_class = referrer->GetDeclaringClass(); |
| if (UNLIKELY(!referring_class->CanAccess(methods_class) || |
| !referring_class->CanAccessMember(methods_class, |
| resolved_method->GetAccessFlags()))) { |
| // Potential illegal access, may need to refine the method's class. |
| return NULL; |
| } |
| } |
| if (type == kInterface) { // Most common form of slow path dispatch. |
| return this_object->GetClass()->FindVirtualMethodForInterface(resolved_method); |
| } else if (is_direct) { |
| return resolved_method; |
| } else if (type == kSuper) { |
| return referrer->GetDeclaringClass()->GetSuperClass()->GetVTable()-> |
| Get(resolved_method->GetMethodIndex()); |
| } else { |
| DCHECK(type == kVirtual); |
| return this_object->GetClass()->GetVTable()->Get(resolved_method->GetMethodIndex()); |
| } |
| } |
| |
| static inline mirror::Class* ResolveVerifyAndClinit(uint32_t type_idx, |
| const mirror::ArtMethod* referrer, |
| Thread* self, bool can_run_clinit, |
| bool verify_access) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); |
| mirror::Class* klass = class_linker->ResolveType(type_idx, referrer); |
| if (UNLIKELY(klass == NULL)) { |
| CHECK(self->IsExceptionPending()); |
| return NULL; // Failure - Indicate to caller to deliver exception |
| } |
| // Perform access check if necessary. |
| mirror::Class* referring_class = referrer->GetDeclaringClass(); |
| if (verify_access && UNLIKELY(!referring_class->CanAccess(klass))) { |
| ThrowIllegalAccessErrorClass(referring_class, klass); |
| return NULL; // Failure - Indicate to caller to deliver exception |
| } |
| // If we're just implementing const-class, we shouldn't call <clinit>. |
| if (!can_run_clinit) { |
| return klass; |
| } |
| // If we are the <clinit> of this class, just return our storage. |
| // |
| // Do not set the DexCache InitializedStaticStorage, since that implies <clinit> has finished |
| // running. |
| if (klass == referring_class && referrer->IsConstructor() && referrer->IsStatic()) { |
| return klass; |
| } |
| if (!class_linker->EnsureInitialized(klass, true, true)) { |
| CHECK(self->IsExceptionPending()); |
| return NULL; // Failure - Indicate to caller to deliver exception |
| } |
| referrer->GetDexCacheInitializedStaticStorage()->Set(type_idx, klass); |
| return klass; |
| } |
| |
| extern void ThrowStackOverflowError(Thread* self) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| |
| static inline mirror::String* ResolveStringFromCode(const mirror::ArtMethod* referrer, |
| uint32_t string_idx) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); |
| return class_linker->ResolveString(string_idx, referrer); |
| } |
| |
| static inline void UnlockJniSynchronizedMethod(jobject locked, Thread* self) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) |
| UNLOCK_FUNCTION(monitor_lock_) { |
| // Save any pending exception over monitor exit call. |
| mirror::Throwable* saved_exception = NULL; |
| ThrowLocation saved_throw_location; |
| if (UNLIKELY(self->IsExceptionPending())) { |
| saved_exception = self->GetException(&saved_throw_location); |
| self->ClearException(); |
| } |
| // Decode locked object and unlock, before popping local references. |
| self->DecodeJObject(locked)->MonitorExit(self); |
| if (UNLIKELY(self->IsExceptionPending())) { |
| LOG(FATAL) << "Synchronized JNI code returning with an exception:\n" |
| << saved_exception->Dump() |
| << "\nEncountered second exception during implicit MonitorExit:\n" |
| << self->GetException(NULL)->Dump(); |
| } |
| // Restore pending exception. |
| if (saved_exception != NULL) { |
| self->SetException(saved_throw_location, saved_exception); |
| } |
| } |
| |
| static inline void CheckReferenceResult(mirror::Object* o, Thread* self) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| if (o == NULL) { |
| return; |
| } |
| mirror::ArtMethod* m = self->GetCurrentMethod(NULL); |
| if (o == kInvalidIndirectRefObject) { |
| JniAbortF(NULL, "invalid reference returned from %s", PrettyMethod(m).c_str()); |
| } |
| // Make sure that the result is an instance of the type this method was expected to return. |
| mirror::Class* return_type = MethodHelper(m).GetReturnType(); |
| |
| if (!o->InstanceOf(return_type)) { |
| JniAbortF(NULL, "attempt to return an instance of %s from %s", |
| PrettyTypeOf(o).c_str(), PrettyMethod(m).c_str()); |
| } |
| } |
| |
| static inline void CheckSuspend(Thread* thread) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| for (;;) { |
| if (thread->ReadFlag(kCheckpointRequest)) { |
| thread->RunCheckpointFunction(); |
| } else if (thread->ReadFlag(kSuspendRequest)) { |
| thread->FullSuspendCheck(); |
| } else { |
| break; |
| } |
| } |
| } |
| |
| JValue InvokeProxyInvocationHandler(ScopedObjectAccessUnchecked& soa, const char* shorty, |
| jobject rcvr_jobj, jobject interface_art_method_jobj, |
| std::vector<jvalue>& args) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_); |
| |
| // Entry point for deoptimization. |
| extern "C" void art_quick_deoptimize(); |
| static inline uintptr_t GetQuickDeoptimizationEntryPoint() { |
| return reinterpret_cast<uintptr_t>(art_quick_deoptimize); |
| } |
| |
| // Return address of instrumentation stub. |
| extern "C" void art_quick_instrumentation_entry(void*); |
| static inline void* GetQuickInstrumentationEntryPoint() { |
| return reinterpret_cast<void*>(art_quick_instrumentation_entry); |
| } |
| |
| // The return_pc of instrumentation exit stub. |
| extern "C" void art_quick_instrumentation_exit(); |
| static inline uintptr_t GetQuickInstrumentationExitPc() { |
| return reinterpret_cast<uintptr_t>(art_quick_instrumentation_exit); |
| } |
| |
| extern "C" void art_portable_to_interpreter_bridge(mirror::ArtMethod*); |
| static inline const void* GetPortableToInterpreterBridge() { |
| return reinterpret_cast<void*>(art_portable_to_interpreter_bridge); |
| } |
| |
| extern "C" void art_quick_to_interpreter_bridge(mirror::ArtMethod*); |
| static inline const void* GetQuickToInterpreterBridge() { |
| return reinterpret_cast<void*>(art_quick_to_interpreter_bridge); |
| } |
| |
| // Return address of interpreter stub. |
| static inline const void* GetCompiledCodeToInterpreterBridge() { |
| #if defined(ART_USE_PORTABLE_COMPILER) |
| return GetPortableToInterpreterBridge(); |
| #else |
| return GetQuickToInterpreterBridge(); |
| #endif |
| } |
| |
| |
| static inline const void* GetPortableResolutionTrampoline(ClassLinker* class_linker) { |
| return class_linker->GetPortableResolutionTrampoline(); |
| } |
| |
| static inline const void* GetQuickResolutionTrampoline(ClassLinker* class_linker) { |
| return class_linker->GetQuickResolutionTrampoline(); |
| } |
| |
| // Return address of resolution trampoline stub for defined compiler. |
| static inline const void* GetResolutionTrampoline(ClassLinker* class_linker) { |
| #if defined(ART_USE_PORTABLE_COMPILER) |
| return GetPortableResolutionTrampoline(class_linker); |
| #else |
| return GetQuickResolutionTrampoline(class_linker); |
| #endif |
| } |
| |
| static inline const void* GetPortableImtConflictTrampoline(ClassLinker* class_linker) { |
| return class_linker->GetPortableImtConflictTrampoline(); |
| } |
| |
| static inline const void* GetQuickImtConflictTrampoline(ClassLinker* class_linker) { |
| return class_linker->GetQuickImtConflictTrampoline(); |
| } |
| |
| // Return address of imt conflict trampoline stub for defined compiler. |
| static inline const void* GetImtConflictTrampoline(ClassLinker* class_linker) { |
| #if defined(ART_USE_PORTABLE_COMPILER) |
| return GetPortableImtConflictTrampoline(class_linker); |
| #else |
| return GetQuickImtConflictTrampoline(class_linker); |
| #endif |
| } |
| |
| extern "C" void art_portable_proxy_invoke_handler(); |
| static inline const void* GetPortableProxyInvokeHandler() { |
| return reinterpret_cast<void*>(art_portable_proxy_invoke_handler); |
| } |
| |
| extern "C" void art_quick_proxy_invoke_handler(); |
| static inline const void* GetQuickProxyInvokeHandler() { |
| return reinterpret_cast<void*>(art_quick_proxy_invoke_handler); |
| } |
| |
| static inline const void* GetProxyInvokeHandler() { |
| #if defined(ART_USE_PORTABLE_COMPILER) |
| return GetPortableProxyInvokeHandler(); |
| #else |
| return GetQuickProxyInvokeHandler(); |
| #endif |
| } |
| |
| extern "C" void* art_jni_dlsym_lookup_stub(JNIEnv*, jobject); |
| static inline void* GetJniDlsymLookupStub() { |
| return reinterpret_cast<void*>(art_jni_dlsym_lookup_stub); |
| } |
| |
| template <typename INT_TYPE, typename FLOAT_TYPE> |
| static inline INT_TYPE art_float_to_integral(FLOAT_TYPE f) { |
| const INT_TYPE kMaxInt = static_cast<INT_TYPE>(std::numeric_limits<INT_TYPE>::max()); |
| const INT_TYPE kMinInt = static_cast<INT_TYPE>(std::numeric_limits<INT_TYPE>::min()); |
| const FLOAT_TYPE kMaxIntAsFloat = static_cast<FLOAT_TYPE>(kMaxInt); |
| const FLOAT_TYPE kMinIntAsFloat = static_cast<FLOAT_TYPE>(kMinInt); |
| if (LIKELY(f > kMinIntAsFloat)) { |
| if (LIKELY(f < kMaxIntAsFloat)) { |
| return static_cast<INT_TYPE>(f); |
| } else { |
| return kMaxInt; |
| } |
| } else { |
| return (f != f) ? 0 : kMinInt; // f != f implies NaN |
| } |
| } |
| |
| } // namespace art |
| |
| #endif // ART_RUNTIME_ENTRYPOINTS_ENTRYPOINT_UTILS_H_ |