| /* |
| * Copyright (C) 2011 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 <memory> |
| #include <type_traits> |
| |
| #include "base/arena_allocator.h" |
| #include "base/callee_save_type.h" |
| #include "base/enums.h" |
| #include "base/leb128.h" |
| #include "base/malloc_arena_pool.h" |
| #include "class_linker.h" |
| #include "common_runtime_test.h" |
| #include "dex/code_item_accessors-inl.h" |
| #include "dex/dex_file-inl.h" |
| #include "dex/dex_file.h" |
| #include "dex/dex_file_exception_helpers.h" |
| #include "gtest/gtest.h" |
| #include "handle_scope-inl.h" |
| #include "mirror/class-inl.h" |
| #include "mirror/object-inl.h" |
| #include "mirror/object_array-inl.h" |
| #include "mirror/stack_trace_element.h" |
| #include "oat_quick_method_header.h" |
| #include "obj_ptr-inl.h" |
| #include "optimizing/stack_map_stream.h" |
| #include "runtime-inl.h" |
| #include "scoped_thread_state_change-inl.h" |
| #include "thread.h" |
| |
| namespace art { |
| |
| class ExceptionTest : public CommonRuntimeTest { |
| protected: |
| // Since various dexers may differ in bytecode layout, we play |
| // it safe and simply set the dex pc to the start of the method, |
| // which always points to the first source statement. |
| static constexpr const uint32_t kDexPc = 0; |
| |
| virtual void SetUp() { |
| CommonRuntimeTest::SetUp(); |
| |
| ScopedObjectAccess soa(Thread::Current()); |
| StackHandleScope<2> hs(soa.Self()); |
| Handle<mirror::ClassLoader> class_loader( |
| hs.NewHandle(soa.Decode<mirror::ClassLoader>(LoadDex("ExceptionHandle")))); |
| my_klass_ = class_linker_->FindClass(soa.Self(), "LExceptionHandle;", class_loader); |
| ASSERT_TRUE(my_klass_ != nullptr); |
| Handle<mirror::Class> klass(hs.NewHandle(my_klass_)); |
| class_linker_->EnsureInitialized(soa.Self(), klass, true, true); |
| my_klass_ = klass.Get(); |
| |
| dex_ = my_klass_->GetDexCache()->GetDexFile(); |
| |
| uint32_t code_size = 12; |
| for (size_t i = 0 ; i < code_size; i++) { |
| fake_code_.push_back(0x70 | i); |
| } |
| |
| const uint32_t native_pc_offset = 4u; |
| CHECK_ALIGNED_PARAM(native_pc_offset, GetInstructionSetInstructionAlignment(kRuntimeISA)); |
| |
| MallocArenaPool pool; |
| ArenaStack arena_stack(&pool); |
| ScopedArenaAllocator allocator(&arena_stack); |
| StackMapStream stack_maps(&allocator, kRuntimeISA); |
| stack_maps.BeginStackMapEntry(kDexPc, |
| native_pc_offset, |
| /* register_mask */ 0u, |
| /* sp_mask */ nullptr, |
| /* num_dex_registers */ 0u, |
| /* inlining_depth */ 0u); |
| stack_maps.EndStackMapEntry(); |
| const size_t stack_maps_size = stack_maps.PrepareForFillIn(); |
| const size_t header_size = sizeof(OatQuickMethodHeader); |
| const size_t code_alignment = GetInstructionSetAlignment(kRuntimeISA); |
| const size_t code_offset = RoundUp(stack_maps_size + header_size, code_alignment); |
| |
| fake_header_code_and_maps_.resize(code_offset + fake_code_.size()); |
| MemoryRegion stack_maps_region(&fake_header_code_and_maps_[0], stack_maps_size); |
| stack_maps.FillInCodeInfo(stack_maps_region); |
| OatQuickMethodHeader method_header(code_offset, 0u, 4 * sizeof(void*), 0u, 0u, code_size); |
| static_assert(std::is_trivially_copyable<OatQuickMethodHeader>::value, "Cannot use memcpy"); |
| memcpy(&fake_header_code_and_maps_[code_offset - header_size], &method_header, header_size); |
| std::copy(fake_code_.begin(), |
| fake_code_.end(), |
| fake_header_code_and_maps_.begin() + code_offset); |
| const void* code_ptr = fake_header_code_and_maps_.data() + code_offset; |
| |
| if (kRuntimeISA == InstructionSet::kArm) { |
| // Check that the Thumb2 adjustment will be a NOP, see EntryPointToCodePointer(). |
| CHECK_ALIGNED(code_ptr, 2); |
| } |
| |
| method_f_ = my_klass_->FindClassMethod("f", "()I", kRuntimePointerSize); |
| ASSERT_TRUE(method_f_ != nullptr); |
| ASSERT_FALSE(method_f_->IsDirect()); |
| method_f_->SetEntryPointFromQuickCompiledCode(code_ptr); |
| |
| method_g_ = my_klass_->FindClassMethod("g", "(I)V", kRuntimePointerSize); |
| ASSERT_TRUE(method_g_ != nullptr); |
| ASSERT_FALSE(method_g_->IsDirect()); |
| method_g_->SetEntryPointFromQuickCompiledCode(code_ptr); |
| } |
| |
| const DexFile* dex_; |
| |
| std::vector<uint8_t> fake_code_; |
| std::vector<uint8_t> fake_header_code_and_maps_; |
| |
| ArtMethod* method_f_; |
| ArtMethod* method_g_; |
| |
| private: |
| ObjPtr<mirror::Class> my_klass_; |
| }; |
| |
| TEST_F(ExceptionTest, FindCatchHandler) { |
| ScopedObjectAccess soa(Thread::Current()); |
| CodeItemDataAccessor accessor(*dex_, dex_->GetCodeItem(method_f_->GetCodeItemOffset())); |
| |
| ASSERT_TRUE(accessor.HasCodeItem()); |
| |
| ASSERT_EQ(2u, accessor.TriesSize()); |
| ASSERT_NE(0u, accessor.InsnsSizeInCodeUnits()); |
| |
| const DexFile::TryItem& t0 = accessor.TryItems().begin()[0]; |
| const DexFile::TryItem& t1 = accessor.TryItems().begin()[1]; |
| EXPECT_LE(t0.start_addr_, t1.start_addr_); |
| { |
| CatchHandlerIterator iter(accessor, 4 /* Dex PC in the first try block */); |
| EXPECT_STREQ("Ljava/io/IOException;", dex_->StringByTypeIdx(iter.GetHandlerTypeIndex())); |
| ASSERT_TRUE(iter.HasNext()); |
| iter.Next(); |
| EXPECT_STREQ("Ljava/lang/Exception;", dex_->StringByTypeIdx(iter.GetHandlerTypeIndex())); |
| ASSERT_TRUE(iter.HasNext()); |
| iter.Next(); |
| EXPECT_FALSE(iter.HasNext()); |
| } |
| { |
| CatchHandlerIterator iter(accessor, 8 /* Dex PC in the second try block */); |
| EXPECT_STREQ("Ljava/io/IOException;", dex_->StringByTypeIdx(iter.GetHandlerTypeIndex())); |
| ASSERT_TRUE(iter.HasNext()); |
| iter.Next(); |
| EXPECT_FALSE(iter.HasNext()); |
| } |
| { |
| CatchHandlerIterator iter(accessor, 11 /* Dex PC not in any try block */); |
| EXPECT_FALSE(iter.HasNext()); |
| } |
| } |
| |
| TEST_F(ExceptionTest, StackTraceElement) { |
| Thread* thread = Thread::Current(); |
| thread->TransitionFromSuspendedToRunnable(); |
| bool started = runtime_->Start(); |
| CHECK(started); |
| JNIEnv* env = thread->GetJniEnv(); |
| ScopedObjectAccess soa(env); |
| |
| std::vector<uintptr_t> fake_stack; |
| Runtime* r = Runtime::Current(); |
| r->SetInstructionSet(kRuntimeISA); |
| ArtMethod* save_method = r->CreateCalleeSaveMethod(); |
| r->SetCalleeSaveMethod(save_method, CalleeSaveType::kSaveAllCalleeSaves); |
| QuickMethodFrameInfo frame_info = r->GetRuntimeMethodFrameInfo(save_method); |
| |
| ASSERT_EQ(kStackAlignment, 16U); |
| // ASSERT_EQ(sizeof(uintptr_t), sizeof(uint32_t)); |
| |
| // Create the stack frame for the callee save method, expected by the runtime. |
| fake_stack.push_back(reinterpret_cast<uintptr_t>(save_method)); |
| for (size_t i = 0; i < frame_info.FrameSizeInBytes() - 2 * sizeof(uintptr_t); |
| i += sizeof(uintptr_t)) { |
| fake_stack.push_back(0); |
| } |
| |
| fake_stack.push_back(method_g_->GetOatQuickMethodHeader(0)->ToNativeQuickPc( |
| method_g_, kDexPc, /* is_catch_handler */ false)); // return pc |
| |
| // Create/push fake 16byte stack frame for method g |
| fake_stack.push_back(reinterpret_cast<uintptr_t>(method_g_)); |
| fake_stack.push_back(0); |
| fake_stack.push_back(0); |
| fake_stack.push_back(method_g_->GetOatQuickMethodHeader(0)->ToNativeQuickPc( |
| method_g_, kDexPc, /* is_catch_handler */ false)); // return pc |
| |
| // Create/push fake 16byte stack frame for method f |
| fake_stack.push_back(reinterpret_cast<uintptr_t>(method_f_)); |
| fake_stack.push_back(0); |
| fake_stack.push_back(0); |
| fake_stack.push_back(0xEBAD6070); // return pc |
| |
| // Push Method* of null to terminate the trace |
| fake_stack.push_back(0); |
| |
| // Push null values which will become null incoming arguments. |
| fake_stack.push_back(0); |
| fake_stack.push_back(0); |
| fake_stack.push_back(0); |
| |
| // Set up thread to appear as if we called out of method_g_ at given pc dex. |
| thread->SetTopOfStack(reinterpret_cast<ArtMethod**>(&fake_stack[0])); |
| |
| jobject internal = thread->CreateInternalStackTrace<false>(soa); |
| ASSERT_TRUE(internal != nullptr); |
| jobjectArray ste_array = Thread::InternalStackTraceToStackTraceElementArray(soa, internal); |
| ASSERT_TRUE(ste_array != nullptr); |
| auto trace_array = soa.Decode<mirror::ObjectArray<mirror::StackTraceElement>>(ste_array); |
| |
| ASSERT_TRUE(trace_array != nullptr); |
| ASSERT_TRUE(trace_array->Get(0) != nullptr); |
| EXPECT_STREQ("ExceptionHandle", |
| trace_array->Get(0)->GetDeclaringClass()->ToModifiedUtf8().c_str()); |
| EXPECT_STREQ("ExceptionHandle.java", |
| trace_array->Get(0)->GetFileName()->ToModifiedUtf8().c_str()); |
| EXPECT_STREQ("g", trace_array->Get(0)->GetMethodName()->ToModifiedUtf8().c_str()); |
| EXPECT_EQ(36, trace_array->Get(0)->GetLineNumber()); |
| |
| ASSERT_TRUE(trace_array->Get(1) != nullptr); |
| EXPECT_STREQ("ExceptionHandle", |
| trace_array->Get(1)->GetDeclaringClass()->ToModifiedUtf8().c_str()); |
| EXPECT_STREQ("ExceptionHandle.java", |
| trace_array->Get(1)->GetFileName()->ToModifiedUtf8().c_str()); |
| EXPECT_STREQ("f", trace_array->Get(1)->GetMethodName()->ToModifiedUtf8().c_str()); |
| EXPECT_EQ(22, trace_array->Get(1)->GetLineNumber()); |
| |
| thread->SetTopOfStack(nullptr); // Disarm the assertion that no code is running when we detach. |
| } |
| |
| } // namespace art |