| /* |
| * Copyright 2011 Google Inc. All Rights Reserved. |
| * |
| * 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 "runtime_support.h" |
| |
| #include "dex_cache.h" |
| #include "dex_verifier.h" |
| #include "macros.h" |
| #include "reflection.h" |
| #include "ScopedLocalRef.h" |
| |
| namespace art { |
| |
| // Place a special frame at the TOS that will save the callee saves for the given type |
| static void FinishCalleeSaveFrameSetup(Thread* self, Method** sp, Runtime::CalleeSaveType type) { |
| // Be aware the store below may well stomp on an incoming argument |
| *sp = Runtime::Current()->GetCalleeSaveMethod(type); |
| self->SetTopOfStack(sp, 0); |
| } |
| |
| // Temporary debugging hook for compiler. |
| extern void DebugMe(Method* method, uint32_t info) { |
| LOG(INFO) << "DebugMe"; |
| if (method != NULL) { |
| LOG(INFO) << PrettyMethod(method); |
| } |
| LOG(INFO) << "Info: " << info; |
| } |
| |
| extern "C" uint32_t artObjectInitFromCode(Object* o, Thread* self, Method** sp) { |
| FinishCalleeSaveFrameSetup(self, sp, Runtime::kRefsOnly); |
| Class* c = o->GetClass(); |
| if (UNLIKELY(c->IsFinalizable())) { |
| Heap::AddFinalizerReference(self, o); |
| } |
| /* |
| * NOTE: once debugger/profiler support is added, we'll need to check |
| * here and branch to actual compiled object.<init> to handle any |
| * breakpoint/logging activities if either is active. |
| */ |
| return self->IsExceptionPending() ? -1 : 0; |
| } |
| |
| // Return value helper for jobject return types |
| extern Object* DecodeJObjectInThread(Thread* thread, jobject obj) { |
| if (thread->IsExceptionPending()) { |
| return NULL; |
| } |
| return thread->DecodeJObject(obj); |
| } |
| |
| extern void* FindNativeMethod(Thread* thread) { |
| DCHECK(Thread::Current() == thread); |
| |
| Method* method = const_cast<Method*>(thread->GetCurrentMethod()); |
| DCHECK(method != NULL); |
| |
| // Lookup symbol address for method, on failure we'll return NULL with an |
| // exception set, otherwise we return the address of the method we found. |
| void* native_code = thread->GetJniEnv()->vm->FindCodeForNativeMethod(method); |
| if (native_code == NULL) { |
| DCHECK(thread->IsExceptionPending()); |
| return NULL; |
| } else { |
| // Register so that future calls don't come here |
| method->RegisterNative(native_code); |
| return native_code; |
| } |
| } |
| |
| // Called by generated call to throw an exception |
| extern "C" void artDeliverExceptionFromCode(Throwable* exception, Thread* thread, Method** sp) { |
| /* |
| * exception may be NULL, in which case this routine should |
| * throw NPE. NOTE: this is a convenience for generated code, |
| * which previously did the null check inline and constructed |
| * and threw a NPE if NULL. This routine responsible for setting |
| * exception_ in thread and delivering the exception. |
| */ |
| FinishCalleeSaveFrameSetup(thread, sp, Runtime::kSaveAll); |
| if (exception == NULL) { |
| thread->ThrowNewException("Ljava/lang/NullPointerException;", "throw with null exception"); |
| } else { |
| thread->SetException(exception); |
| } |
| thread->DeliverException(); |
| } |
| |
| // Deliver an exception that's pending on thread helping set up a callee save frame on the way |
| extern "C" void artDeliverPendingExceptionFromCode(Thread* thread, Method** sp) { |
| FinishCalleeSaveFrameSetup(thread, sp, Runtime::kSaveAll); |
| thread->DeliverException(); |
| } |
| |
| // Called by generated call to throw a NPE exception |
| extern "C" void artThrowNullPointerExceptionFromCode(Thread* thread, Method** sp) { |
| FinishCalleeSaveFrameSetup(thread, sp, Runtime::kSaveAll); |
| thread->ThrowNewException("Ljava/lang/NullPointerException;", NULL); |
| thread->DeliverException(); |
| } |
| |
| // Called by generated call to throw an arithmetic divide by zero exception |
| extern "C" void artThrowDivZeroFromCode(Thread* thread, Method** sp) { |
| FinishCalleeSaveFrameSetup(thread, sp, Runtime::kSaveAll); |
| thread->ThrowNewException("Ljava/lang/ArithmeticException;", "divide by zero"); |
| thread->DeliverException(); |
| } |
| |
| // Called by generated call to throw an arithmetic divide by zero exception |
| extern "C" void artThrowArrayBoundsFromCode(int index, int limit, Thread* thread, Method** sp) { |
| FinishCalleeSaveFrameSetup(thread, sp, Runtime::kSaveAll); |
| thread->ThrowNewExceptionF("Ljava/lang/ArrayIndexOutOfBoundsException;", |
| "length=%d; index=%d", limit, index); |
| thread->DeliverException(); |
| } |
| |
| // Called by the AbstractMethodError stub (not runtime support) |
| extern void ThrowAbstractMethodErrorFromCode(Method* method, Thread* thread, Method** sp) { |
| FinishCalleeSaveFrameSetup(thread, sp, Runtime::kSaveAll); |
| thread->ThrowNewExceptionF("Ljava/lang/AbstractMethodError;", |
| "abstract method \"%s\"", PrettyMethod(method).c_str()); |
| thread->DeliverException(); |
| } |
| |
| extern "C" void artThrowStackOverflowFromCode(Method* method, Thread* thread, Method** sp) { |
| FinishCalleeSaveFrameSetup(thread, sp, Runtime::kSaveAll); |
| thread->SetStackEndForStackOverflow(); // Allow space on the stack for constructor to execute |
| thread->ThrowNewExceptionF("Ljava/lang/StackOverflowError;", |
| "stack size %zdkb; default stack size: %zdkb", |
| thread->GetStackSize() / KB, Runtime::Current()->GetDefaultStackSize() / KB); |
| thread->ResetDefaultStackEnd(); // Return to default stack size |
| thread->DeliverException(); |
| } |
| |
| static std::string ClassNameFromIndex(Method* method, uint32_t ref, |
| verifier::VerifyErrorRefType ref_type, bool access) { |
| ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); |
| const DexFile& dex_file = class_linker->FindDexFile(method->GetDeclaringClass()->GetDexCache()); |
| |
| uint16_t type_idx = 0; |
| if (ref_type == verifier::VERIFY_ERROR_REF_FIELD) { |
| const DexFile::FieldId& id = dex_file.GetFieldId(ref); |
| type_idx = id.class_idx_; |
| } else if (ref_type == verifier::VERIFY_ERROR_REF_METHOD) { |
| const DexFile::MethodId& id = dex_file.GetMethodId(ref); |
| type_idx = id.class_idx_; |
| } else if (ref_type == verifier::VERIFY_ERROR_REF_CLASS) { |
| type_idx = ref; |
| } else { |
| CHECK(false) << static_cast<int>(ref_type); |
| } |
| |
| std::string class_name(PrettyDescriptor(dex_file.StringByTypeIdx(type_idx))); |
| if (!access) { |
| return class_name; |
| } |
| |
| std::string result; |
| result += "tried to access class "; |
| result += class_name; |
| result += " from class "; |
| result += PrettyDescriptor(method->GetDeclaringClass()->GetDescriptor()); |
| return result; |
| } |
| |
| static std::string FieldNameFromIndex(const Method* method, uint32_t ref, |
| verifier::VerifyErrorRefType ref_type, bool access) { |
| CHECK_EQ(static_cast<int>(ref_type), static_cast<int>(verifier::VERIFY_ERROR_REF_FIELD)); |
| |
| ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); |
| const DexFile& dex_file = class_linker->FindDexFile(method->GetDeclaringClass()->GetDexCache()); |
| |
| const DexFile::FieldId& id = dex_file.GetFieldId(ref); |
| std::string class_name(PrettyDescriptor(dex_file.GetFieldDeclaringClassDescriptor(id))); |
| const char* field_name = dex_file.StringDataByIdx(id.name_idx_); |
| if (!access) { |
| return class_name + "." + field_name; |
| } |
| |
| std::string result; |
| result += "tried to access field "; |
| result += class_name + "." + field_name; |
| result += " from class "; |
| result += PrettyDescriptor(method->GetDeclaringClass()->GetDescriptor()); |
| return result; |
| } |
| |
| static std::string MethodNameFromIndex(const Method* method, uint32_t ref, |
| verifier::VerifyErrorRefType ref_type, bool access) { |
| CHECK_EQ(static_cast<int>(ref_type), static_cast<int>(verifier::VERIFY_ERROR_REF_METHOD)); |
| |
| ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); |
| const DexFile& dex_file = class_linker->FindDexFile(method->GetDeclaringClass()->GetDexCache()); |
| |
| const DexFile::MethodId& id = dex_file.GetMethodId(ref); |
| std::string class_name(PrettyDescriptor(dex_file.GetMethodDeclaringClassDescriptor(id))); |
| const char* method_name = dex_file.StringDataByIdx(id.name_idx_); |
| if (!access) { |
| return class_name + "." + method_name; |
| } |
| |
| std::string result; |
| result += "tried to access method "; |
| result += class_name + "." + method_name + ":" + |
| dex_file.CreateMethodSignature(id.proto_idx_, NULL); |
| result += " from class "; |
| result += PrettyDescriptor(method->GetDeclaringClass()->GetDescriptor()); |
| return result; |
| } |
| |
| extern "C" void artThrowVerificationErrorFromCode(int32_t kind, int32_t ref, Thread* self, Method** sp) { |
| FinishCalleeSaveFrameSetup(self, sp, Runtime::kSaveAll); |
| Frame frame = self->GetTopOfStack(); // We need the calling method as context to interpret 'ref' |
| frame.Next(); |
| Method* method = frame.GetMethod(); |
| |
| verifier::VerifyErrorRefType ref_type = |
| static_cast<verifier::VerifyErrorRefType>(kind >> verifier::kVerifyErrorRefTypeShift); |
| |
| const char* exception_class = "Ljava/lang/VerifyError;"; |
| std::string msg; |
| |
| switch (static_cast<verifier::VerifyError>(kind & ~(0xff << verifier::kVerifyErrorRefTypeShift))) { |
| case verifier::VERIFY_ERROR_NO_CLASS: |
| exception_class = "Ljava/lang/NoClassDefFoundError;"; |
| msg = ClassNameFromIndex(method, ref, ref_type, false); |
| break; |
| case verifier::VERIFY_ERROR_NO_FIELD: |
| exception_class = "Ljava/lang/NoSuchFieldError;"; |
| msg = FieldNameFromIndex(method, ref, ref_type, false); |
| break; |
| case verifier::VERIFY_ERROR_NO_METHOD: |
| exception_class = "Ljava/lang/NoSuchMethodError;"; |
| msg = MethodNameFromIndex(method, ref, ref_type, false); |
| break; |
| case verifier::VERIFY_ERROR_ACCESS_CLASS: |
| exception_class = "Ljava/lang/IllegalAccessError;"; |
| msg = ClassNameFromIndex(method, ref, ref_type, true); |
| break; |
| case verifier::VERIFY_ERROR_ACCESS_FIELD: |
| exception_class = "Ljava/lang/IllegalAccessError;"; |
| msg = FieldNameFromIndex(method, ref, ref_type, true); |
| break; |
| case verifier::VERIFY_ERROR_ACCESS_METHOD: |
| exception_class = "Ljava/lang/IllegalAccessError;"; |
| msg = MethodNameFromIndex(method, ref, ref_type, true); |
| break; |
| case verifier::VERIFY_ERROR_CLASS_CHANGE: |
| exception_class = "Ljava/lang/IncompatibleClassChangeError;"; |
| msg = ClassNameFromIndex(method, ref, ref_type, false); |
| break; |
| case verifier::VERIFY_ERROR_INSTANTIATION: |
| exception_class = "Ljava/lang/InstantiationError;"; |
| msg = ClassNameFromIndex(method, ref, ref_type, false); |
| break; |
| case verifier::VERIFY_ERROR_GENERIC: |
| // Generic VerifyError; use default exception, no message. |
| break; |
| case verifier::VERIFY_ERROR_NONE: |
| CHECK(false); |
| break; |
| } |
| self->ThrowNewException(exception_class, msg.c_str()); |
| self->DeliverException(); |
| } |
| |
| extern "C" void artThrowInternalErrorFromCode(int32_t errnum, Thread* thread, Method** sp) { |
| FinishCalleeSaveFrameSetup(thread, sp, Runtime::kSaveAll); |
| LOG(WARNING) << "TODO: internal error detail message. errnum=" << errnum; |
| thread->ThrowNewExceptionF("Ljava/lang/InternalError;", "errnum=%d", errnum); |
| thread->DeliverException(); |
| } |
| |
| extern "C" void artThrowRuntimeExceptionFromCode(int32_t errnum, Thread* thread, Method** sp) { |
| FinishCalleeSaveFrameSetup(thread, sp, Runtime::kSaveAll); |
| LOG(WARNING) << "TODO: runtime exception detail message. errnum=" << errnum; |
| thread->ThrowNewExceptionF("Ljava/lang/RuntimeException;", "errnum=%d", errnum); |
| thread->DeliverException(); |
| } |
| |
| extern "C" void artThrowNoSuchMethodFromCode(int32_t method_idx, Thread* self, Method** sp) { |
| FinishCalleeSaveFrameSetup(self, sp, Runtime::kSaveAll); |
| Frame frame = self->GetTopOfStack(); // We need the calling method as context for the method_idx |
| frame.Next(); |
| Method* method = frame.GetMethod(); |
| self->ThrowNewException("Ljava/lang/NoSuchMethodError;", |
| MethodNameFromIndex(method, method_idx, verifier::VERIFY_ERROR_REF_METHOD, false).c_str()); |
| self->DeliverException(); |
| } |
| |
| extern "C" void artThrowNegArraySizeFromCode(int32_t size, Thread* thread, Method** sp) { |
| FinishCalleeSaveFrameSetup(thread, sp, Runtime::kSaveAll); |
| LOG(WARNING) << "UNTESTED artThrowNegArraySizeFromCode"; |
| thread->ThrowNewExceptionF("Ljava/lang/NegativeArraySizeException;", "%d", size); |
| thread->DeliverException(); |
| } |
| |
| void* UnresolvedDirectMethodTrampolineFromCode(int32_t method_idx, Method** sp, Thread* thread, |
| Runtime::TrampolineType type) { |
| // TODO: this code is specific to ARM |
| // On entry the stack pointed by sp is: |
| // | argN | | |
| // | ... | | |
| // | arg4 | | |
| // | arg3 spill | | Caller's frame |
| // | arg2 spill | | |
| // | arg1 spill | | |
| // | Method* | --- |
| // | LR | |
| // | ... | callee saves |
| // | R3 | arg3 |
| // | R2 | arg2 |
| // | R1 | arg1 |
| // | R0 | |
| // | Method* | <- sp |
| uintptr_t* regs = reinterpret_cast<uintptr_t*>(reinterpret_cast<byte*>(sp) + kPointerSize); |
| DCHECK_EQ(48U, Runtime::Current()->GetCalleeSaveMethod(Runtime::kRefsAndArgs)->GetFrameSizeInBytes()); |
| Method** caller_sp = reinterpret_cast<Method**>(reinterpret_cast<byte*>(sp) + 48); |
| uintptr_t caller_pc = regs[10]; |
| FinishCalleeSaveFrameSetup(thread, sp, Runtime::kRefsAndArgs); |
| // Start new JNI local reference state |
| JNIEnvExt* env = thread->GetJniEnv(); |
| ScopedJniEnvLocalRefState env_state(env); |
| // Discover shorty (avoid GCs) |
| ClassLinker* linker = Runtime::Current()->GetClassLinker(); |
| const char* shorty = linker->MethodShorty(method_idx, *caller_sp); |
| size_t shorty_len = strlen(shorty); |
| size_t args_in_regs = 0; |
| for (size_t i = 1; i < shorty_len; i++) { |
| char c = shorty[i]; |
| args_in_regs = args_in_regs + (c == 'J' || c == 'D' ? 2 : 1); |
| if (args_in_regs > 3) { |
| args_in_regs = 3; |
| break; |
| } |
| } |
| bool is_static; |
| if (type == Runtime::kUnknownMethod) { |
| Method* caller = *caller_sp; |
| // less two as return address may span into next dex instruction |
| uint32_t dex_pc = caller->ToDexPC(caller_pc - 2); |
| const DexFile& dex_file = Runtime::Current()->GetClassLinker() |
| ->FindDexFile(caller->GetDeclaringClass()->GetDexCache()); |
| const DexFile::CodeItem* code = dex_file.GetCodeItem(caller->GetCodeItemOffset()); |
| CHECK_LT(dex_pc, code->insns_size_in_code_units_); |
| const Instruction* instr = Instruction::At(&code->insns_[dex_pc]); |
| Instruction::Code instr_code = instr->Opcode(); |
| is_static = (instr_code == Instruction::INVOKE_STATIC) || |
| (instr_code == Instruction::INVOKE_STATIC_RANGE); |
| DCHECK(is_static || (instr_code == Instruction::INVOKE_DIRECT) || |
| (instr_code == Instruction::INVOKE_DIRECT_RANGE)); |
| } else { |
| is_static = type == Runtime::kStaticMethod; |
| } |
| // Place into local references incoming arguments from the caller's register arguments |
| size_t cur_arg = 1; // skip method_idx in R0, first arg is in R1 |
| if (!is_static) { |
| Object* obj = reinterpret_cast<Object*>(regs[cur_arg]); |
| cur_arg++; |
| if (args_in_regs < 3) { |
| // If we thought we had fewer than 3 arguments in registers, account for the receiver |
| args_in_regs++; |
| } |
| AddLocalReference<jobject>(env, obj); |
| } |
| size_t shorty_index = 1; // skip return value |
| // Iterate while arguments and arguments in registers (less 1 from cur_arg which is offset to skip |
| // R0) |
| while ((cur_arg - 1) < args_in_regs && shorty_index < shorty_len) { |
| char c = shorty[shorty_index]; |
| shorty_index++; |
| if (c == 'L') { |
| Object* obj = reinterpret_cast<Object*>(regs[cur_arg]); |
| AddLocalReference<jobject>(env, obj); |
| } |
| cur_arg = cur_arg + (c == 'J' || c == 'D' ? 2 : 1); |
| } |
| // Place into local references incoming arguments from the caller's stack arguments |
| cur_arg += 11; // skip LR, Method* and spills for R1 to R3 and callee saves |
| while (shorty_index < shorty_len) { |
| char c = shorty[shorty_index]; |
| shorty_index++; |
| if (c == 'L') { |
| Object* obj = reinterpret_cast<Object*>(regs[cur_arg]); |
| AddLocalReference<jobject>(env, obj); |
| } |
| cur_arg = cur_arg + (c == 'J' || c == 'D' ? 2 : 1); |
| } |
| // Resolve method filling in dex cache |
| Method* called = linker->ResolveMethod(method_idx, *caller_sp, true); |
| if (LIKELY(!thread->IsExceptionPending())) { |
| // Update CodeAndDirectMethod table |
| Method* caller = *caller_sp; |
| DexCache* dex_cache = caller->GetDeclaringClass()->GetDexCache(); |
| dex_cache->GetCodeAndDirectMethods()->SetResolvedDirectMethod(method_idx, called); |
| // We got this far, ensure that the declaring class is initialized |
| linker->EnsureInitialized(called->GetDeclaringClass(), true); |
| } |
| void* code; |
| if (UNLIKELY(thread->IsExceptionPending())) { |
| // Something went wrong in ResolveMethod or EnsureInitialized, |
| // go into deliver exception with the pending exception in r0 |
| code = reinterpret_cast<void*>(art_deliver_exception_from_code); |
| regs[0] = reinterpret_cast<uintptr_t>(thread->GetException()); |
| thread->ClearException(); |
| } else { |
| // Expect class to at least be initializing |
| CHECK(called->GetDeclaringClass()->IsInitializing()); |
| // Set up entry into main method |
| regs[0] = reinterpret_cast<uintptr_t>(called); |
| code = const_cast<void*>(called->GetCode()); |
| } |
| return code; |
| } |
| |
| // Fast path field resolution that can't throw exceptions |
| static Field* FindFieldFast(uint32_t field_idx, const Method* referrer) { |
| Field* resolved_field = referrer->GetDexCacheResolvedFields()->Get(field_idx); |
| if (UNLIKELY(resolved_field == NULL)) { |
| return NULL; |
| } |
| Class* fields_class = resolved_field->GetDeclaringClass(); |
| // Check class is initilaized or initializing |
| if (UNLIKELY(!fields_class->IsInitializing())) { |
| return NULL; |
| } |
| return resolved_field; |
| } |
| |
| // Slow path field resolution and declaring class initialization |
| Field* FindFieldFromCode(uint32_t field_idx, const Method* referrer, bool is_static) { |
| ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); |
| Field* resolved_field = class_linker->ResolveField(field_idx, referrer, is_static); |
| if (LIKELY(resolved_field != NULL)) { |
| Class* fields_class = resolved_field->GetDeclaringClass(); |
| // If the class is already initializing, we must be inside <clinit>, or |
| // we'd still be waiting for the lock. |
| if (fields_class->IsInitializing()) { |
| return resolved_field; |
| } |
| if (Runtime::Current()->GetClassLinker()->EnsureInitialized(fields_class, true)) { |
| return resolved_field; |
| } |
| } |
| DCHECK(Thread::Current()->IsExceptionPending()); // Throw exception and unwind |
| return NULL; |
| } |
| |
| extern "C" Field* artFindInstanceFieldFromCode(uint32_t field_idx, const Method* referrer, |
| Thread* self, Method** sp) { |
| Field* resolved_field = FindFieldFast(field_idx, referrer); |
| if (UNLIKELY(resolved_field == NULL)) { |
| FinishCalleeSaveFrameSetup(self, sp, Runtime::kRefsOnly); |
| resolved_field = FindFieldFromCode(field_idx, referrer, false); |
| } |
| return resolved_field; |
| } |
| |
| extern "C" uint32_t artGet32StaticFromCode(uint32_t field_idx, const Method* referrer, |
| Thread* self, Method** sp) { |
| Field* field = FindFieldFast(field_idx, referrer); |
| if (LIKELY(field != NULL)) { |
| if (LIKELY(field->IsPrimitiveType() && field->PrimitiveSize() == sizeof(int32_t))) { |
| return field->Get32(NULL); |
| } |
| } |
| FinishCalleeSaveFrameSetup(self, sp, Runtime::kRefsOnly); |
| field = FindFieldFromCode(field_idx, referrer, true); |
| if (field != NULL) { |
| if (!field->IsPrimitiveType() || field->PrimitiveSize() != sizeof(int32_t)) { |
| self->ThrowNewExceptionF("Ljava/lang/NoSuchFieldError;", |
| "Attempted read of 32-bit primitive on field '%s'", |
| PrettyField(field, true).c_str()); |
| } else { |
| return field->Get32(NULL); |
| } |
| } |
| return 0; // Will throw exception by checking with Thread::Current |
| } |
| |
| extern "C" uint64_t artGet64StaticFromCode(uint32_t field_idx, const Method* referrer, |
| Thread* self, Method** sp) { |
| Field* field = FindFieldFast(field_idx, referrer); |
| if (LIKELY(field != NULL)) { |
| if (LIKELY(field->IsPrimitiveType() && field->PrimitiveSize() == sizeof(int64_t))) { |
| return field->Get64(NULL); |
| } |
| } |
| FinishCalleeSaveFrameSetup(self, sp, Runtime::kRefsOnly); |
| field = FindFieldFromCode(field_idx, referrer, true); |
| if (field != NULL) { |
| if (!field->IsPrimitiveType() || field->PrimitiveSize() != sizeof(int64_t)) { |
| self->ThrowNewExceptionF("Ljava/lang/NoSuchFieldError;", |
| "Attempted read of 64-bit primitive on field '%s'", |
| PrettyField(field, true).c_str()); |
| } else { |
| return field->Get64(NULL); |
| } |
| } |
| return 0; // Will throw exception by checking with Thread::Current |
| } |
| |
| extern "C" Object* artGetObjStaticFromCode(uint32_t field_idx, const Method* referrer, |
| Thread* self, Method** sp) { |
| Field* field = FindFieldFast(field_idx, referrer); |
| if (LIKELY(field != NULL)) { |
| if (LIKELY(!field->IsPrimitiveType())) { |
| return field->GetObj(NULL); |
| } |
| } |
| FinishCalleeSaveFrameSetup(self, sp, Runtime::kRefsOnly); |
| field = FindFieldFromCode(field_idx, referrer, true); |
| if (field != NULL) { |
| if (field->IsPrimitiveType()) { |
| self->ThrowNewExceptionF("Ljava/lang/NoSuchFieldError;", |
| "Attempted read of reference on primitive field '%s'", |
| PrettyField(field, true).c_str()); |
| } else { |
| return field->GetObj(NULL); |
| } |
| } |
| return NULL; // Will throw exception by checking with Thread::Current |
| } |
| |
| extern "C" int artSet32StaticFromCode(uint32_t field_idx, const Method* referrer, |
| uint32_t new_value, Thread* self, Method** sp) { |
| Field* field = FindFieldFast(field_idx, referrer); |
| if (LIKELY(field != NULL)) { |
| if (LIKELY(field->IsPrimitiveType() && field->PrimitiveSize() == sizeof(int32_t))) { |
| field->Set32(NULL, new_value); |
| return 0; // success |
| } |
| } |
| FinishCalleeSaveFrameSetup(self, sp, Runtime::kRefsOnly); |
| field = FindFieldFromCode(field_idx, referrer, true); |
| if (field != NULL) { |
| if (!field->IsPrimitiveType() || field->PrimitiveSize() != sizeof(int32_t)) { |
| self->ThrowNewExceptionF("Ljava/lang/NoSuchFieldError;", |
| "Attempted write of 32-bit primitive to field '%s'", |
| PrettyField(field, true).c_str()); |
| } else { |
| field->Set32(NULL, new_value); |
| return 0; // success |
| } |
| } |
| return -1; // failure |
| } |
| |
| extern "C" int artSet64StaticFromCode(uint32_t field_idx, const Method* referrer, |
| uint64_t new_value, Thread* self, Method** sp) { |
| Field* field = FindFieldFast(field_idx, referrer); |
| if (LIKELY(field != NULL)) { |
| if (LIKELY(field->IsPrimitiveType() && field->PrimitiveSize() == sizeof(int64_t))) { |
| field->Set64(NULL, new_value); |
| return 0; // success |
| } |
| } |
| FinishCalleeSaveFrameSetup(self, sp, Runtime::kRefsOnly); |
| field = FindFieldFromCode(field_idx, referrer, true); |
| if (LIKELY(field != NULL)) { |
| if (UNLIKELY(!field->IsPrimitiveType() || field->PrimitiveSize() != sizeof(int64_t))) { |
| self->ThrowNewExceptionF("Ljava/lang/NoSuchFieldError;", |
| "Attempted write of 64-bit primitive to field '%s'", |
| PrettyField(field, true).c_str()); |
| } else { |
| field->Set64(NULL, new_value); |
| return 0; // success |
| } |
| } |
| return -1; // failure |
| } |
| |
| extern "C" int artSetObjStaticFromCode(uint32_t field_idx, const Method* referrer, |
| Object* new_value, Thread* self, Method** sp) { |
| Field* field = FindFieldFast(field_idx, referrer); |
| if (LIKELY(field != NULL)) { |
| if (LIKELY(!field->IsPrimitiveType())) { |
| field->SetObj(NULL, new_value); |
| return 0; // success |
| } |
| } |
| FinishCalleeSaveFrameSetup(self, sp, Runtime::kRefsOnly); |
| field = FindFieldFromCode(field_idx, referrer, true); |
| if (field != NULL) { |
| if (field->IsPrimitiveType()) { |
| self->ThrowNewExceptionF("Ljava/lang/NoSuchFieldError;", |
| "Attempted write of reference to primitive field '%s'", |
| PrettyField(field, true).c_str()); |
| } else { |
| field->SetObj(NULL, new_value); |
| return 0; // success |
| } |
| } |
| return -1; // failure |
| } |
| |
| // 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. |
| extern "C" Object* artAllocObjectFromCode(uint32_t type_idx, Method* method, |
| Thread* self, Method** sp) { |
| FinishCalleeSaveFrameSetup(self, sp, Runtime::kRefsOnly); |
| Class* klass = method->GetDexCacheResolvedTypes()->Get(type_idx); |
| Runtime* runtime = Runtime::Current(); |
| if (UNLIKELY(klass == NULL)) { |
| klass = runtime->GetClassLinker()->ResolveType(type_idx, method); |
| if (klass == NULL) { |
| DCHECK(self->IsExceptionPending()); |
| return NULL; // Failure |
| } |
| } |
| if (!runtime->GetClassLinker()->EnsureInitialized(klass, true)) { |
| DCHECK(self->IsExceptionPending()); |
| return NULL; // Failure |
| } |
| return klass->AllocObject(); |
| } |
| |
| extern "C" Object* artAllocObjectFromCodeWithAccessCheck(uint32_t type_idx, Method* method, |
| Thread* self, Method** sp) { |
| FinishCalleeSaveFrameSetup(self, sp, Runtime::kRefsOnly); |
| Class* klass = method->GetDexCacheResolvedTypes()->Get(type_idx); |
| Runtime* runtime = Runtime::Current(); |
| if (UNLIKELY(klass == NULL)) { |
| klass = runtime->GetClassLinker()->ResolveType(type_idx, method); |
| if (klass == NULL) { |
| DCHECK(self->IsExceptionPending()); |
| return NULL; // Failure |
| } |
| } |
| Class* referrer = method->GetDeclaringClass(); |
| if (UNLIKELY(!referrer->CanAccess(klass))) { |
| self->ThrowNewExceptionF("Ljava/lang/IllegalAccessError;", "illegal class access: '%s' -> '%s'", |
| PrettyDescriptor(referrer->GetDescriptor()).c_str(), |
| PrettyDescriptor(klass->GetDescriptor()).c_str()); |
| return NULL; // Failure |
| } |
| if (!runtime->GetClassLinker()->EnsureInitialized(klass, true)) { |
| DCHECK(self->IsExceptionPending()); |
| return NULL; // Failure |
| } |
| return klass->AllocObject(); |
| } |
| |
| Array* CheckAndAllocArrayFromCode(uint32_t type_idx, Method* method, int32_t component_count, |
| Thread* self) { |
| if (UNLIKELY(component_count < 0)) { |
| self->ThrowNewExceptionF("Ljava/lang/NegativeArraySizeException;", "%d", component_count); |
| return NULL; // Failure |
| } |
| Class* klass = method->GetDexCacheResolvedTypes()->Get(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 NULL; // Failure |
| } |
| } |
| if (UNLIKELY(klass->IsPrimitive() && !klass->IsPrimitiveInt())) { |
| if (klass->IsPrimitiveLong() || klass->IsPrimitiveDouble()) { |
| Thread::Current()->ThrowNewExceptionF("Ljava/lang/RuntimeException;", |
| "Bad filled array request for type %s", |
| PrettyDescriptor(klass->GetDescriptor()).c_str()); |
| } else { |
| Thread::Current()->ThrowNewExceptionF("Ljava/lang/InternalError;", |
| "Found type %s; filled-new-array not implemented for anything but \'int\'", |
| PrettyDescriptor(klass->GetDescriptor()).c_str()); |
| } |
| return NULL; // Failure |
| } else { |
| DCHECK(klass->IsArrayClass()) << PrettyClass(klass); |
| return Array::Alloc(klass, component_count); |
| } |
| } |
| |
| // Helper function to alloc array for OP_FILLED_NEW_ARRAY |
| extern "C" Array* artCheckAndAllocArrayFromCode(uint32_t type_idx, Method* method, |
| int32_t component_count, Thread* self, Method** sp) { |
| FinishCalleeSaveFrameSetup(self, sp, Runtime::kRefsOnly); |
| return CheckAndAllocArrayFromCode(type_idx, method, component_count, self); |
| } |
| |
| // 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. |
| extern "C" Array* artAllocArrayFromCode(uint32_t type_idx, Method* method, int32_t component_count, |
| Thread* self, Method** sp) { |
| FinishCalleeSaveFrameSetup(self, sp, Runtime::kRefsOnly); |
| if (UNLIKELY(component_count < 0)) { |
| Thread::Current()->ThrowNewExceptionF("Ljava/lang/NegativeArraySizeException;", "%d", |
| component_count); |
| return NULL; // Failure |
| } |
| Class* klass = method->GetDexCacheResolvedTypes()->Get(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 NULL; // Failure |
| } |
| CHECK(klass->IsArrayClass()) << PrettyClass(klass); |
| } |
| return Array::Alloc(klass, component_count); |
| } |
| |
| // Assignable test for code, won't throw. Null and equality tests already performed |
| uint32_t IsAssignableFromCode(const Class* klass, const Class* ref_class) { |
| DCHECK(klass != NULL); |
| DCHECK(ref_class != NULL); |
| return klass->IsAssignableFrom(ref_class) ? 1 : 0; |
| } |
| |
| // Check whether it is safe to cast one class to the other, throw exception and return -1 on failure |
| extern "C" int artCheckCastFromCode(const Class* a, const Class* b, Thread* self, Method** sp) { |
| DCHECK(a->IsClass()) << PrettyClass(a); |
| DCHECK(b->IsClass()) << PrettyClass(b); |
| if (LIKELY(b->IsAssignableFrom(a))) { |
| return 0; // Success |
| } else { |
| FinishCalleeSaveFrameSetup(self, sp, Runtime::kRefsOnly); |
| Thread::Current()->ThrowNewExceptionF("Ljava/lang/ClassCastException;", |
| "%s cannot be cast to %s", |
| PrettyDescriptor(a->GetDescriptor()).c_str(), |
| PrettyDescriptor(b->GetDescriptor()).c_str()); |
| return -1; // Failure |
| } |
| } |
| |
| // Tests whether 'element' can be assigned into an array of type 'array_class'. |
| // Returns 0 on success and -1 if an exception is pending. |
| extern "C" int artCanPutArrayElementFromCode(const Object* element, const Class* array_class, |
| Thread* self, Method** sp) { |
| DCHECK(array_class != NULL); |
| // element can't be NULL as we catch this is screened in runtime_support |
| Class* element_class = element->GetClass(); |
| Class* component_type = array_class->GetComponentType(); |
| if (LIKELY(component_type->IsAssignableFrom(element_class))) { |
| return 0; // Success |
| } else { |
| FinishCalleeSaveFrameSetup(self, sp, Runtime::kRefsOnly); |
| Thread::Current()->ThrowNewExceptionF("Ljava/lang/ArrayStoreException;", |
| "Cannot store an object of type %s in to an array of type %s", |
| PrettyDescriptor(element_class->GetDescriptor()).c_str(), |
| PrettyDescriptor(array_class->GetDescriptor()).c_str()); |
| return -1; // Failure |
| } |
| } |
| |
| Class* InitializeStaticStorage(uint32_t type_idx, const Method* referrer, Thread* self) { |
| ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); |
| Class* klass = class_linker->ResolveType(type_idx, referrer); |
| if (UNLIKELY(klass == NULL)) { |
| CHECK(self->IsExceptionPending()); |
| return NULL; // Failure - Indicate to caller to deliver exception |
| } |
| DCHECK(referrer->GetDeclaringClass()->CanAccess(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 == referrer->GetDeclaringClass() && referrer->IsClassInitializer()) { |
| return klass; |
| } |
| if (!class_linker->EnsureInitialized(klass, true)) { |
| CHECK(self->IsExceptionPending()); |
| return NULL; // Failure - Indicate to caller to deliver exception |
| } |
| referrer->GetDexCacheInitializedStaticStorage()->Set(type_idx, klass); |
| return klass; |
| } |
| |
| Class* InitializeStaticStorageAndVerifyAccess(uint32_t type_idx, const Method* referrer, |
| Thread* self) { |
| ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); |
| 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 (UNLIKELY(!referrer->GetDeclaringClass()->CanAccess(klass))) { |
| self->ThrowNewExceptionF("Ljava/lang/IllegalAccessError;", |
| "Class %s is inaccessible to method %s", |
| PrettyDescriptor(klass->GetDescriptor()).c_str(), |
| PrettyMethod(referrer, true).c_str()); |
| } |
| // 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 == referrer->GetDeclaringClass() && referrer->IsClassInitializer()) { |
| return klass; |
| } |
| if (!class_linker->EnsureInitialized(klass, true)) { |
| CHECK(self->IsExceptionPending()); |
| return NULL; // Failure - Indicate to caller to deliver exception |
| } |
| referrer->GetDexCacheInitializedStaticStorage()->Set(type_idx, klass); |
| return klass; |
| } |
| |
| extern "C" Class* artInitializeStaticStorageFromCode(uint32_t type_idx, const Method* referrer, |
| Thread* self, Method** sp) { |
| FinishCalleeSaveFrameSetup(self, sp, Runtime::kRefsOnly); |
| return InitializeStaticStorage(type_idx, referrer, self); |
| } |
| |
| extern "C" Class* artInitializeTypeFromCode(uint32_t type_idx, const Method* referrer, Thread* self, |
| Method** sp) { |
| // Called when method->dex_cache_resolved_types_[] misses |
| FinishCalleeSaveFrameSetup(self, sp, Runtime::kRefsOnly); |
| return InitializeStaticStorage(type_idx, referrer, self); |
| } |
| |
| extern "C" Class* artInitializeTypeAndVerifyAccessFromCode(uint32_t type_idx, |
| const Method* referrer, Thread* self, |
| Method** sp) { |
| // Called when caller isn't guaranteed to have access to a type and the dex cache may be |
| // unpopulated |
| FinishCalleeSaveFrameSetup(self, sp, Runtime::kRefsOnly); |
| return InitializeStaticStorageAndVerifyAccess(type_idx, referrer, self); |
| } |
| |
| // TODO: placeholder. Helper function to resolve virtual method |
| void ResolveMethodFromCode(Method* method, uint32_t method_idx) { |
| /* |
| * Slow-path handler on invoke virtual method path in which |
| * base method is unresolved at compile-time. Doesn't need to |
| * return anything - just either ensure that |
| * method->dex_cache_resolved_methods_(method_idx) != NULL or |
| * throw and unwind. The caller will restart call sequence |
| * from the beginning. |
| */ |
| } |
| |
| String* ResolveStringFromCode(const Method* referrer, uint32_t string_idx) { |
| ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); |
| return class_linker->ResolveString(string_idx, referrer); |
| } |
| |
| extern "C" String* artResolveStringFromCode(Method* referrer, int32_t string_idx, |
| Thread* self, Method** sp) { |
| FinishCalleeSaveFrameSetup(self, sp, Runtime::kRefsOnly); |
| return ResolveStringFromCode(referrer, string_idx); |
| } |
| |
| extern "C" int artUnlockObjectFromCode(Object* obj, Thread* self, Method** sp) { |
| FinishCalleeSaveFrameSetup(self, sp, Runtime::kRefsOnly); |
| DCHECK(obj != NULL); // Assumed to have been checked before entry |
| // MonitorExit may throw exception |
| return obj->MonitorExit(self) ? 0 /* Success */ : -1 /* Failure */; |
| } |
| |
| extern "C" void artLockObjectFromCode(Object* obj, Thread* thread, Method** sp) { |
| FinishCalleeSaveFrameSetup(thread, sp, Runtime::kRefsOnly); |
| DCHECK(obj != NULL); // Assumed to have been checked before entry |
| obj->MonitorEnter(thread); // May block |
| DCHECK(thread->HoldsLock(obj)); |
| // Only possible exception is NPE and is handled before entry |
| DCHECK(!thread->IsExceptionPending()); |
| } |
| |
| void CheckSuspendFromCode(Thread* thread) { |
| // Called when thread->suspend_count_ != 0 |
| Runtime::Current()->GetThreadList()->FullSuspendCheck(thread); |
| } |
| |
| extern "C" void artTestSuspendFromCode(Thread* thread, Method** sp) { |
| // Called when suspend count check value is 0 and thread->suspend_count_ != 0 |
| FinishCalleeSaveFrameSetup(thread, sp, Runtime::kRefsOnly); |
| Runtime::Current()->GetThreadList()->FullSuspendCheck(thread); |
| } |
| |
| /* |
| * Fill the array with predefined constant values, throwing exceptions if the array is null or |
| * not of sufficient length. |
| * |
| * NOTE: When dealing with a raw dex file, the data to be copied uses |
| * little-endian ordering. Require that oat2dex do any required swapping |
| * so this routine can get by with a memcpy(). |
| * |
| * Format of the data: |
| * ushort ident = 0x0300 magic value |
| * ushort width width of each element in the table |
| * uint size number of elements in the table |
| * ubyte data[size*width] table of data values (may contain a single-byte |
| * padding at the end) |
| */ |
| extern "C" int artHandleFillArrayDataFromCode(Array* array, const uint16_t* table, |
| Thread* self, Method** sp) { |
| FinishCalleeSaveFrameSetup(self, sp, Runtime::kRefsOnly); |
| DCHECK_EQ(table[0], 0x0300); |
| if (UNLIKELY(array == NULL)) { |
| Thread::Current()->ThrowNewExceptionF("Ljava/lang/NullPointerException;", |
| "null array in fill array"); |
| return -1; // Error |
| } |
| DCHECK(array->IsArrayInstance() && !array->IsObjectArray()); |
| uint32_t size = (uint32_t)table[2] | (((uint32_t)table[3]) << 16); |
| if (UNLIKELY(static_cast<int32_t>(size) > array->GetLength())) { |
| Thread::Current()->ThrowNewExceptionF("Ljava/lang/ArrayIndexOutOfBoundsException;", |
| "failed array fill. length=%d; index=%d", array->GetLength(), size); |
| return -1; // Error |
| } |
| uint16_t width = table[1]; |
| uint32_t size_in_bytes = size * width; |
| memcpy((char*)array + Array::DataOffset().Int32Value(), (char*)&table[4], size_in_bytes); |
| return 0; // Success |
| } |
| |
| // See comments in runtime_support_asm.S |
| extern "C" uint64_t artFindInterfaceMethodInCacheFromCode(uint32_t method_idx, |
| Object* this_object, |
| Method* caller_method, |
| Thread* thread, Method** sp) { |
| Method* interface_method = caller_method->GetDexCacheResolvedMethods()->Get(method_idx); |
| Method* found_method = NULL; // The found method |
| if (LIKELY(interface_method != NULL && this_object != NULL)) { |
| found_method = this_object->GetClass()->FindVirtualMethodForInterface(interface_method, false); |
| } |
| if (UNLIKELY(found_method == NULL)) { |
| FinishCalleeSaveFrameSetup(thread, sp, Runtime::kRefsAndArgs); |
| if (this_object == NULL) { |
| thread->ThrowNewExceptionF("Ljava/lang/NullPointerException;", |
| "null receiver during interface dispatch"); |
| return 0; |
| } |
| if (interface_method == NULL) { |
| ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); |
| interface_method = class_linker->ResolveMethod(method_idx, caller_method, false); |
| if (interface_method == NULL) { |
| // Could not resolve interface method. Throw error and unwind |
| CHECK(thread->IsExceptionPending()); |
| return 0; |
| } |
| } |
| found_method = this_object->GetClass()->FindVirtualMethodForInterface(interface_method, true); |
| if (found_method == NULL) { |
| CHECK(thread->IsExceptionPending()); |
| return 0; |
| } |
| } |
| const void* code = found_method->GetCode(); |
| |
| uint32_t method_uint = reinterpret_cast<uint32_t>(found_method); |
| uint64_t code_uint = reinterpret_cast<uint32_t>(code); |
| uint64_t result = ((code_uint << 32) | method_uint); |
| return result; |
| } |
| |
| static void ThrowNewUndeclaredThrowableException(Thread* self, JNIEnv* env, Throwable* exception) { |
| ScopedLocalRef<jclass> jlr_UTE_class(env, |
| env->FindClass("java/lang/reflect/UndeclaredThrowableException")); |
| if (jlr_UTE_class.get() == NULL) { |
| LOG(ERROR) << "Couldn't throw new \"java/lang/reflect/UndeclaredThrowableException\""; |
| } else { |
| jmethodID jlre_UTE_constructor = env->GetMethodID(jlr_UTE_class.get(), "<init>", |
| "(Ljava/lang/Throwable;)V"); |
| jthrowable jexception = AddLocalReference<jthrowable>(env, exception); |
| ScopedLocalRef<jthrowable> jlr_UTE(env, |
| reinterpret_cast<jthrowable>(env->NewObject(jlr_UTE_class.get(), jlre_UTE_constructor, |
| jexception))); |
| int rc = env->Throw(jlr_UTE.get()); |
| if (rc != JNI_OK) { |
| LOG(ERROR) << "Couldn't throw new \"java/lang/reflect/UndeclaredThrowableException\""; |
| } |
| } |
| CHECK(self->IsExceptionPending()); |
| } |
| |
| // Handler for invocation on proxy methods. On entry a frame will exist for the proxy object method |
| // which is responsible for recording callee save registers. We explicitly handlerize incoming |
| // reference arguments (so they survive GC) and create a boxed argument array. Finally we invoke |
| // the invocation handler which is a field within the proxy object receiver. |
| extern "C" void artProxyInvokeHandler(Method* proxy_method, Object* receiver, |
| Thread* self, byte* stack_args) { |
| // Register the top of the managed stack |
| Method** proxy_sp = reinterpret_cast<Method**>(stack_args - 12); |
| DCHECK_EQ(*proxy_sp, proxy_method); |
| self->SetTopOfStack(proxy_sp, 0); |
| // TODO: ARM specific |
| DCHECK_EQ(proxy_method->GetFrameSizeInBytes(), 48u); |
| // Start new JNI local reference state |
| JNIEnvExt* env = self->GetJniEnv(); |
| ScopedJniEnvLocalRefState env_state(env); |
| // Create local ref. copies of proxy method and the receiver |
| jobject rcvr_jobj = AddLocalReference<jobject>(env, receiver); |
| jobject proxy_method_jobj = AddLocalReference<jobject>(env, proxy_method); |
| |
| // Placing into local references incoming arguments from the caller's register arguments, |
| // replacing original Object* with jobject |
| const size_t num_params = proxy_method->NumArgs(); |
| size_t args_in_regs = 0; |
| for (size_t i = 1; i < num_params; i++) { // skip receiver |
| args_in_regs = args_in_regs + (proxy_method->IsParamALongOrDouble(i) ? 2 : 1); |
| if (args_in_regs > 2) { |
| args_in_regs = 2; |
| break; |
| } |
| } |
| size_t cur_arg = 0; // current stack location to read |
| size_t param_index = 1; // skip receiver |
| while (cur_arg < args_in_regs && param_index < num_params) { |
| if (proxy_method->IsParamAReference(param_index)) { |
| Object* obj = *reinterpret_cast<Object**>(stack_args + (cur_arg * kPointerSize)); |
| jobject jobj = AddLocalReference<jobject>(env, obj); |
| *reinterpret_cast<jobject*>(stack_args + (cur_arg * kPointerSize)) = jobj; |
| } |
| cur_arg = cur_arg + (proxy_method->IsParamALongOrDouble(param_index) ? 2 : 1); |
| param_index++; |
| } |
| // Placing into local references incoming arguments from the caller's stack arguments |
| cur_arg += 11; // skip callee saves, LR, Method* and out arg spills for R1 to R3 |
| while (param_index < num_params) { |
| if (proxy_method->IsParamAReference(param_index)) { |
| Object* obj = *reinterpret_cast<Object**>(stack_args + (cur_arg * kPointerSize)); |
| jobject jobj = AddLocalReference<jobject>(env, obj); |
| *reinterpret_cast<jobject*>(stack_args + (cur_arg * kPointerSize)) = jobj; |
| } |
| cur_arg = cur_arg + (proxy_method->IsParamALongOrDouble(param_index) ? 2 : 1); |
| param_index++; |
| } |
| // Set up arguments array and place in local IRT during boxing (which may allocate/GC) |
| jvalue args_jobj[3]; |
| args_jobj[0].l = rcvr_jobj; |
| args_jobj[1].l = proxy_method_jobj; |
| // Args array, if no arguments then NULL (don't include receiver in argument count) |
| args_jobj[2].l = NULL; |
| ObjectArray<Object>* args = NULL; |
| if ((num_params - 1) > 0) { |
| args = Runtime::Current()->GetClassLinker()->AllocObjectArray<Object>(num_params - 1); |
| if (args == NULL) { |
| CHECK(self->IsExceptionPending()); |
| return; |
| } |
| args_jobj[2].l = AddLocalReference<jobjectArray>(env, args); |
| } |
| // Convert proxy method into expected interface method |
| Method* interface_method = proxy_method->FindOverriddenMethod(); |
| CHECK(interface_method != NULL); |
| args_jobj[1].l = AddLocalReference<jobject>(env, interface_method); |
| LOG(INFO) << "Interface method is " << PrettyMethod(interface_method, true); |
| // Box arguments |
| cur_arg = 0; // reset stack location to read to start |
| // reset index, will index into param type array which doesn't include the receiver |
| param_index = 0; |
| ObjectArray<Class>* param_types = interface_method->GetJavaParameterTypes(); |
| CHECK(param_types != NULL); |
| // Check number of parameter types agrees with number from the Method - less 1 for the receiver. |
| CHECK_EQ(static_cast<size_t>(param_types->GetLength()), num_params - 1); |
| while (cur_arg < args_in_regs && param_index < (num_params - 1)) { |
| Class* param_type = param_types->Get(param_index); |
| Object* obj; |
| if (!param_type->IsPrimitive()) { |
| obj = self->DecodeJObject(*reinterpret_cast<jobject*>(stack_args + (cur_arg * kPointerSize))); |
| } else { |
| JValue val = *reinterpret_cast<JValue*>(stack_args + (cur_arg * kPointerSize)); |
| if (cur_arg == 1 && (param_type->IsPrimitiveLong() || param_type->IsPrimitiveDouble())) { |
| // long/double split over regs and stack, mask in high half from stack arguments |
| uint64_t high_half = *reinterpret_cast<uint32_t*>(stack_args + (13 * kPointerSize)); |
| val.j = (val.j & 0xffffffffULL) | (high_half << 32); |
| } |
| BoxPrimitive(env, param_type->GetPrimitiveType(), val); |
| if (self->IsExceptionPending()) { |
| return; |
| } |
| obj = val.l; |
| } |
| args->Set(param_index, obj); |
| cur_arg = cur_arg + (param_type->IsPrimitiveLong() || param_type->IsPrimitiveDouble() ? 2 : 1); |
| param_index++; |
| } |
| // Placing into local references incoming arguments from the caller's stack arguments |
| cur_arg += 11; // skip callee saves, LR, Method* and out arg spills for R1 to R3 |
| while (param_index < (num_params - 1)) { |
| Class* param_type = param_types->Get(param_index); |
| Object* obj; |
| if (!param_type->IsPrimitive()) { |
| obj = self->DecodeJObject(*reinterpret_cast<jobject*>(stack_args + (cur_arg * kPointerSize))); |
| } else { |
| JValue val = *reinterpret_cast<JValue*>(stack_args + (cur_arg * kPointerSize)); |
| BoxPrimitive(env, param_type->GetPrimitiveType(), val); |
| if (self->IsExceptionPending()) { |
| return; |
| } |
| obj = val.l; |
| } |
| args->Set(param_index, obj); |
| cur_arg = cur_arg + (param_type->IsPrimitiveLong() || param_type->IsPrimitiveDouble() ? 2 : 1); |
| param_index++; |
| } |
| // Get the InvocationHandler method and the field that holds it within the Proxy object |
| static jmethodID inv_hand_invoke_mid = NULL; |
| static jfieldID proxy_inv_hand_fid = NULL; |
| if (proxy_inv_hand_fid == NULL) { |
| ScopedLocalRef<jclass> proxy(env, env->FindClass("java/lang/reflect/Proxy")); |
| proxy_inv_hand_fid = env->GetFieldID(proxy.get(), "h", "Ljava/lang/reflect/InvocationHandler;"); |
| ScopedLocalRef<jclass> inv_hand_class(env, env->FindClass("java/lang/reflect/InvocationHandler")); |
| inv_hand_invoke_mid = env->GetMethodID(inv_hand_class.get(), "invoke", |
| "(Ljava/lang/Object;Ljava/lang/reflect/Method;[Ljava/lang/Object;)Ljava/lang/Object;"); |
| } |
| DCHECK(env->IsInstanceOf(rcvr_jobj, env->FindClass("java/lang/reflect/Proxy"))); |
| jobject inv_hand = env->GetObjectField(rcvr_jobj, proxy_inv_hand_fid); |
| // Call InvocationHandler.invoke |
| jobject result = env->CallObjectMethodA(inv_hand, inv_hand_invoke_mid, args_jobj); |
| // Place result in stack args |
| if (!self->IsExceptionPending()) { |
| Object* result_ref = self->DecodeJObject(result); |
| if (result_ref != NULL) { |
| JValue result_unboxed; |
| UnboxPrimitive(env, result_ref, interface_method->GetReturnType(), result_unboxed); |
| *reinterpret_cast<JValue*>(stack_args) = result_unboxed; |
| } else { |
| *reinterpret_cast<jobject*>(stack_args) = NULL; |
| } |
| } else { |
| // In the case of checked exceptions that aren't declared, the exception must be wrapped by |
| // a UndeclaredThrowableException. |
| Throwable* exception = self->GetException(); |
| self->ClearException(); |
| if (!exception->IsCheckedException()) { |
| self->SetException(exception); |
| } else { |
| ObjectArray<Class>* declared_exceptions = proxy_method->GetExceptionTypes(); |
| Class* exception_class = exception->GetClass(); |
| bool declares_exception = false; |
| for (int i = 0; i < declared_exceptions->GetLength() && !declares_exception; i++) { |
| Class* declared_exception = declared_exceptions->Get(i); |
| declares_exception = declared_exception->IsAssignableFrom(exception_class); |
| } |
| if (declares_exception) { |
| self->SetException(exception); |
| } else { |
| ThrowNewUndeclaredThrowableException(self, env, exception); |
| } |
| } |
| } |
| } |
| |
| /* |
| * Float/double conversion requires clamping to min and max of integer form. If |
| * target doesn't support this normally, use these. |
| */ |
| int64_t D2L(double d) { |
| static const double kMaxLong = (double)(int64_t)0x7fffffffffffffffULL; |
| static const double kMinLong = (double)(int64_t)0x8000000000000000ULL; |
| if (d >= kMaxLong) |
| return (int64_t)0x7fffffffffffffffULL; |
| else if (d <= kMinLong) |
| return (int64_t)0x8000000000000000ULL; |
| else if (d != d) // NaN case |
| return 0; |
| else |
| return (int64_t)d; |
| } |
| |
| int64_t F2L(float f) { |
| static const float kMaxLong = (float)(int64_t)0x7fffffffffffffffULL; |
| static const float kMinLong = (float)(int64_t)0x8000000000000000ULL; |
| if (f >= kMaxLong) |
| return (int64_t)0x7fffffffffffffffULL; |
| else if (f <= kMinLong) |
| return (int64_t)0x8000000000000000ULL; |
| else if (f != f) // NaN case |
| return 0; |
| else |
| return (int64_t)f; |
| } |
| |
| } // namespace art |
