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/*
* 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 "class_linker.h"
#include "common_runtime_test.h"
#include "dex_file.h"
#include "dex_file-inl.h"
#include "gtest/gtest.h"
#include "leb128.h"
#include "mirror/class-inl.h"
#include "mirror/object_array-inl.h"
#include "mirror/object-inl.h"
#include "mirror/stack_trace_element.h"
#include "runtime.h"
#include "scoped_thread_state_change.h"
#include "handle_scope-inl.h"
#include "thread.h"
#include "vmap_table.h"
namespace art {
class ExceptionTest : public CommonRuntimeTest {
protected:
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);
}
fake_mapping_data_.PushBackUnsigned(4); // first element is count
fake_mapping_data_.PushBackUnsigned(4); // total (non-length) elements
fake_mapping_data_.PushBackUnsigned(2); // count of pc to dex elements
// --- pc to dex table
fake_mapping_data_.PushBackUnsigned(3 - 0); // offset 3
fake_mapping_data_.PushBackSigned(3 - 0); // maps to dex offset 3
// --- dex to pc table
fake_mapping_data_.PushBackUnsigned(3 - 0); // offset 3
fake_mapping_data_.PushBackSigned(3 - 0); // maps to dex offset 3
fake_vmap_table_data_.PushBackUnsigned(0 + VmapTable::kEntryAdjustment);
fake_gc_map_.push_back(0); // 0 bytes to encode references and native pc offsets.
fake_gc_map_.push_back(0);
fake_gc_map_.push_back(0); // 0 entries.
fake_gc_map_.push_back(0);
const std::vector<uint8_t>& fake_vmap_table_data = fake_vmap_table_data_.GetData();
const std::vector<uint8_t>& fake_mapping_data = fake_mapping_data_.GetData();
uint32_t vmap_table_offset = sizeof(OatQuickMethodHeader) + fake_vmap_table_data.size();
uint32_t mapping_table_offset = vmap_table_offset + fake_mapping_data.size();
uint32_t gc_map_offset = mapping_table_offset + fake_gc_map_.size();
OatQuickMethodHeader method_header(mapping_table_offset, vmap_table_offset, gc_map_offset,
4 * sizeof(void*), 0u, 0u, code_size);
fake_header_code_and_maps_.resize(sizeof(method_header));
memcpy(&fake_header_code_and_maps_[0], &method_header, sizeof(method_header));
fake_header_code_and_maps_.insert(fake_header_code_and_maps_.begin(),
fake_vmap_table_data.begin(), fake_vmap_table_data.end());
fake_header_code_and_maps_.insert(fake_header_code_and_maps_.begin(),
fake_mapping_data.begin(), fake_mapping_data.end());
fake_header_code_and_maps_.insert(fake_header_code_and_maps_.begin(),
fake_gc_map_.begin(), fake_gc_map_.end());
fake_header_code_and_maps_.insert(fake_header_code_and_maps_.end(),
fake_code_.begin(), fake_code_.end());
// NOTE: Don't align the code (it will not be executed) but check that the Thumb2
// adjustment will be a NOP, see ArtMethod::EntryPointToCodePointer().
CHECK_EQ(mapping_table_offset & 1u, 0u);
const uint8_t* code_ptr = &fake_header_code_and_maps_[gc_map_offset];
method_f_ = my_klass_->FindVirtualMethod("f", "()I", sizeof(void*));
ASSERT_TRUE(method_f_ != nullptr);
method_f_->SetEntryPointFromQuickCompiledCode(code_ptr);
method_g_ = my_klass_->FindVirtualMethod("g", "(I)V", sizeof(void*));
ASSERT_TRUE(method_g_ != nullptr);
method_g_->SetEntryPointFromQuickCompiledCode(code_ptr);
}
const DexFile* dex_;
std::vector<uint8_t> fake_code_;
Leb128EncodingVector fake_mapping_data_;
Leb128EncodingVector fake_vmap_table_data_;
std::vector<uint8_t> fake_gc_map_;
std::vector<uint8_t> fake_header_code_and_maps_;
ArtMethod* method_f_;
ArtMethod* method_g_;
private:
mirror::Class* my_klass_;
};
TEST_F(ExceptionTest, FindCatchHandler) {
ScopedObjectAccess soa(Thread::Current());
const DexFile::CodeItem* code_item = dex_->GetCodeItem(method_f_->GetCodeItemOffset());
ASSERT_TRUE(code_item != nullptr);
ASSERT_EQ(2u, code_item->tries_size_);
ASSERT_NE(0u, code_item->insns_size_in_code_units_);
const DexFile::TryItem *t0, *t1;
t0 = dex_->GetTryItems(*code_item, 0);
t1 = dex_->GetTryItems(*code_item, 1);
EXPECT_LE(t0->start_addr_, t1->start_addr_);
{
CatchHandlerIterator iter(*code_item, 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(*code_item, 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(*code_item, 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, Runtime::kSaveAll);
QuickMethodFrameInfo frame_info = save_method->GetQuickFrameInfo();
ASSERT_EQ(kStackAlignment, 16U);
// ASSERT_EQ(sizeof(uintptr_t), sizeof(uint32_t));
// Create three fake stack frames with mapping data created in SetUp. We map offset 3 in the
// code to dex pc 3.
const uint32_t dex_pc = 3;
// 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_->ToNativeQuickPc(dex_pc)); // 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_f_->ToNativeQuickPc(dex_pc)); // 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 pc dex 3
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(37, 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