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/*
* Copyright (C) 2016 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 "dex_to_dex_decompiler.h"
#include "class_linker.h"
#include "compiler/common_compiler_test.h"
#include "compiler/compiled_method.h"
#include "compiler/driver/compiler_options.h"
#include "compiler/driver/compiler_driver.h"
#include "compiler_callbacks.h"
#include "dex_file.h"
#include "handle_scope-inl.h"
#include "verifier/method_verifier-inl.h"
#include "mirror/class_loader.h"
#include "runtime.h"
#include "thread.h"
#include "scoped_thread_state_change-inl.h"
namespace art {
class DexToDexDecompilerTest : public CommonCompilerTest {
public:
void CompileAll(jobject class_loader) REQUIRES(!Locks::mutator_lock_) {
TimingLogger timings("CompilerDriverTest::CompileAll", false, false);
TimingLogger::ScopedTiming t(__FUNCTION__, &timings);
compiler_options_->boot_image_ = false;
compiler_options_->SetCompilerFilter(CompilerFilter::kQuicken);
compiler_driver_->CompileAll(class_loader,
GetDexFiles(class_loader),
/* verifier_deps */ nullptr,
&timings);
}
void RunTest(const char* dex_name) {
Thread* self = Thread::Current();
// First load the original dex file.
jobject original_class_loader;
{
ScopedObjectAccess soa(self);
original_class_loader = LoadDex(dex_name);
}
const DexFile* original_dex_file = GetDexFiles(original_class_loader)[0];
// Load the dex file again and make it writable to quicken them.
jobject class_loader;
const DexFile* updated_dex_file = nullptr;
{
ScopedObjectAccess soa(self);
class_loader = LoadDex(dex_name);
updated_dex_file = GetDexFiles(class_loader)[0];
Runtime::Current()->GetClassLinker()->RegisterDexFile(
*updated_dex_file, soa.Decode<mirror::ClassLoader>(class_loader).Ptr());
}
// The dex files should be identical.
int cmp = memcmp(original_dex_file->Begin(),
updated_dex_file->Begin(),
updated_dex_file->Size());
ASSERT_EQ(0, cmp);
updated_dex_file->EnableWrite();
CompileAll(class_loader);
// The dex files should be different after quickening.
cmp = memcmp(original_dex_file->Begin(), updated_dex_file->Begin(), updated_dex_file->Size());
ASSERT_NE(0, cmp);
// Unquicken the dex file.
for (uint32_t i = 0; i < updated_dex_file->NumClassDefs(); ++i) {
const DexFile::ClassDef& class_def = updated_dex_file->GetClassDef(i);
const uint8_t* class_data = updated_dex_file->GetClassData(class_def);
if (class_data == nullptr) {
continue;
}
ClassDataItemIterator it(*updated_dex_file, class_data);
// Skip fields
while (it.HasNextStaticField()) {
it.Next();
}
while (it.HasNextInstanceField()) {
it.Next();
}
// Unquicken each method.
while (it.HasNextDirectMethod()) {
uint32_t method_idx = it.GetMemberIndex();
CompiledMethod* compiled_method =
compiler_driver_->GetCompiledMethod(MethodReference(updated_dex_file, method_idx));
ArrayRef<const uint8_t> table;
if (compiled_method != nullptr) {
table = compiled_method->GetVmapTable();
}
optimizer::ArtDecompileDEX(
*it.GetMethodCodeItem(), table, /* decompile_return_instruction */ true);
it.Next();
}
while (it.HasNextVirtualMethod()) {
uint32_t method_idx = it.GetMemberIndex();
CompiledMethod* compiled_method =
compiler_driver_->GetCompiledMethod(MethodReference(updated_dex_file, method_idx));
ArrayRef<const uint8_t> table;
if (compiled_method != nullptr) {
table = compiled_method->GetVmapTable();
}
optimizer::ArtDecompileDEX(
*it.GetMethodCodeItem(), table, /* decompile_return_instruction */ true);
it.Next();
}
DCHECK(!it.HasNext());
}
// Make sure after unquickening we go back to the same contents as the original dex file.
cmp = memcmp(original_dex_file->Begin(), updated_dex_file->Begin(), updated_dex_file->Size());
ASSERT_EQ(0, cmp);
}
};
TEST_F(DexToDexDecompilerTest, VerifierDeps) {
RunTest("VerifierDeps");
}
TEST_F(DexToDexDecompilerTest, DexToDexDecompiler) {
RunTest("DexToDexDecompiler");
}
} // namespace art
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