oat_test.cc revision 650be76eb3c38ff905ec1d9675d73e5cb9a82dac 
1/*
2 * Copyright (C) 2011 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#include "compiler/oat_writer.h"
18#include "mirror/art_method-inl.h"
19#include "mirror/class-inl.h"
20#include "mirror/object_array-inl.h"
21#include "mirror/object-inl.h"
22#include "oat_file.h"
23#include "vector_output_stream.h"
24
25#include "common_test.h"
26
27namespace art {
28
29class OatTest : public CommonTest {
30 protected:
31  static const bool kCompile = false;  // DISABLED_ due to the time to compile libcore
32
33  void CheckMethod(mirror::ArtMethod* method,
34                   const OatFile::OatMethod& oat_method,
35                   const DexFile* dex_file)
36      SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
37    const CompiledMethod* compiled_method =
38        compiler_driver_->GetCompiledMethod(MethodReference(dex_file,
39                                                            method->GetDexMethodIndex()));
40
41    if (compiled_method == NULL) {
42      EXPECT_TRUE(oat_method.GetCode() == NULL) << PrettyMethod(method) << " "
43                                                << oat_method.GetCode();
44#if !defined(ART_USE_PORTABLE_COMPILER)
45      EXPECT_EQ(oat_method.GetFrameSizeInBytes(), kCompile ? kStackAlignment : 0);
46      EXPECT_EQ(oat_method.GetCoreSpillMask(), 0U);
47      EXPECT_EQ(oat_method.GetFpSpillMask(), 0U);
48#endif
49    } else {
50      const void* oat_code = oat_method.GetCode();
51      EXPECT_TRUE(oat_code != NULL) << PrettyMethod(method);
52      uintptr_t oat_code_aligned = RoundDown(reinterpret_cast<uintptr_t>(oat_code), 2);
53      oat_code = reinterpret_cast<const void*>(oat_code_aligned);
54
55      const std::vector<uint8_t>& code = compiled_method->GetCode();
56      size_t code_size = code.size() * sizeof(code[0]);
57      EXPECT_EQ(0, memcmp(oat_code, &code[0], code_size))
58          << PrettyMethod(method) << " " << code_size;
59      CHECK_EQ(0, memcmp(oat_code, &code[0], code_size));
60#if !defined(ART_USE_PORTABLE_COMPILER)
61      EXPECT_EQ(oat_method.GetFrameSizeInBytes(), compiled_method->GetFrameSizeInBytes());
62      EXPECT_EQ(oat_method.GetCoreSpillMask(), compiled_method->GetCoreSpillMask());
63      EXPECT_EQ(oat_method.GetFpSpillMask(), compiled_method->GetFpSpillMask());
64#endif
65    }
66  }
67};
68
69TEST_F(OatTest, WriteRead) {
70  TimingLogger timings("CommonTest::WriteRead", false, false);
71  ClassLinker* class_linker = Runtime::Current()->GetClassLinker();
72
73  // TODO: make selectable
74#if defined(ART_USE_PORTABLE_COMPILER)
75  CompilerBackend compiler_backend = kPortable;
76#else
77  CompilerBackend compiler_backend = kQuick;
78#endif
79  InstructionSet insn_set = kIsTargetBuild ? kThumb2 : kX86;
80
81  InstructionSetFeatures insn_features;
82  verified_methods_data_.reset(new VerifiedMethodsData);
83  method_inliner_map_.reset(compiler_backend == kQuick ? new DexFileToMethodInlinerMap : nullptr);
84  callbacks_.Reset(verified_methods_data_.get(), method_inliner_map_.get());
85  compiler_driver_.reset(new CompilerDriver(verified_methods_data_.get(),
86                                            method_inliner_map_.get(),
87                                            compiler_backend, insn_set,
88                                            insn_features, false, NULL, 2, true));
89  jobject class_loader = NULL;
90  if (kCompile) {
91    TimingLogger timings("OatTest::WriteRead", false, false);
92    compiler_driver_->CompileAll(class_loader, class_linker->GetBootClassPath(), timings);
93  }
94
95  ScopedObjectAccess soa(Thread::Current());
96  ScratchFile tmp;
97  OatWriter oat_writer(class_linker->GetBootClassPath(),
98                       42U,
99                       4096U,
100                       "lue.art",
101                       compiler_driver_.get(),
102                       &timings);
103  bool success = compiler_driver_->WriteElf(GetTestAndroidRoot(),
104                                            !kIsTargetBuild,
105                                            class_linker->GetBootClassPath(),
106                                            oat_writer,
107                                            tmp.GetFile());
108  ASSERT_TRUE(success);
109
110  if (kCompile) {  // OatWriter strips the code, regenerate to compare
111    compiler_driver_->CompileAll(class_loader, class_linker->GetBootClassPath(), timings);
112  }
113  std::string error_msg;
114  UniquePtr<OatFile> oat_file(OatFile::Open(tmp.GetFilename(), tmp.GetFilename(), NULL, false,
115                                            &error_msg));
116  ASSERT_TRUE(oat_file.get() != nullptr) << error_msg;
117  const OatHeader& oat_header = oat_file->GetOatHeader();
118  ASSERT_TRUE(oat_header.IsValid());
119  ASSERT_EQ(1U, oat_header.GetDexFileCount());  // core
120  ASSERT_EQ(42U, oat_header.GetImageFileLocationOatChecksum());
121  ASSERT_EQ(4096U, oat_header.GetImageFileLocationOatDataBegin());
122  ASSERT_EQ("lue.art", oat_header.GetImageFileLocation());
123
124  const DexFile* dex_file = java_lang_dex_file_;
125  uint32_t dex_file_checksum = dex_file->GetLocationChecksum();
126  const OatFile::OatDexFile* oat_dex_file = oat_file->GetOatDexFile(dex_file->GetLocation().c_str(),
127                                                                    &dex_file_checksum);
128  ASSERT_TRUE(oat_dex_file != nullptr);
129  CHECK_EQ(dex_file->GetLocationChecksum(), oat_dex_file->GetDexFileLocationChecksum());
130  for (size_t i = 0; i < dex_file->NumClassDefs(); i++) {
131    const DexFile::ClassDef& class_def = dex_file->GetClassDef(i);
132    const byte* class_data = dex_file->GetClassData(class_def);
133    size_t num_virtual_methods = 0;
134    if (class_data != NULL) {
135      ClassDataItemIterator it(*dex_file, class_data);
136      num_virtual_methods = it.NumVirtualMethods();
137    }
138    const char* descriptor = dex_file->GetClassDescriptor(class_def);
139    SirtRef<mirror::ClassLoader> loader(Thread::Current(), nullptr);
140    mirror::Class* klass = class_linker->FindClass(descriptor, loader);
141
142    UniquePtr<const OatFile::OatClass> oat_class(oat_dex_file->GetOatClass(i));
143    CHECK_EQ(mirror::Class::Status::kStatusNotReady, oat_class->GetStatus()) << descriptor;
144    CHECK_EQ(kCompile ? OatClassType::kOatClassAllCompiled : OatClassType::kOatClassNoneCompiled,
145             oat_class->GetType()) << descriptor;
146
147    size_t method_index = 0;
148    for (size_t i = 0; i < klass->NumDirectMethods(); i++, method_index++) {
149      CheckMethod(klass->GetDirectMethod(i),
150                  oat_class->GetOatMethod(method_index), dex_file);
151    }
152    for (size_t i = 0; i < num_virtual_methods; i++, method_index++) {
153      CheckMethod(klass->GetVirtualMethod(i),
154                  oat_class->GetOatMethod(method_index), dex_file);
155    }
156  }
157}
158
159TEST_F(OatTest, OatHeaderSizeCheck) {
160  // If this test is failing and you have to update these constants,
161  // it is time to update OatHeader::kOatVersion
162  EXPECT_EQ(76U, sizeof(OatHeader));
163  EXPECT_EQ(28U, sizeof(OatMethodOffsets));
164}
165
166TEST_F(OatTest, OatHeaderIsValid) {
167    InstructionSet instruction_set = kX86;
168    InstructionSetFeatures instruction_set_features;
169    std::vector<const DexFile*> dex_files;
170    uint32_t image_file_location_oat_checksum = 0;
171    uint32_t image_file_location_oat_begin = 0;
172    const std::string image_file_location;
173    OatHeader oat_header(instruction_set,
174                         instruction_set_features,
175                         &dex_files,
176                         image_file_location_oat_checksum,
177                         image_file_location_oat_begin,
178                         image_file_location);
179    ASSERT_TRUE(oat_header.IsValid());
180
181    char* magic = const_cast<char*>(oat_header.GetMagic());
182    strcpy(magic, "");  // bad magic
183    ASSERT_FALSE(oat_header.IsValid());
184    strcpy(magic, "oat\n000");  // bad version
185    ASSERT_FALSE(oat_header.IsValid());
186}
187
188}  // namespace art
189