oat_test.cc revision 590fee9e8972f872301c2d16a575d579ee564bee 
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  ClassLinker* class_linker = Runtime::Current()->GetClassLinker();
71
72  // TODO: make selectable
73#if defined(ART_USE_PORTABLE_COMPILER)
74  CompilerBackend compiler_backend = kPortable;
75#else
76  CompilerBackend compiler_backend = kQuick;
77#endif
78  InstructionSet insn_set = kIsTargetBuild ? kThumb2 : kX86;
79
80  InstructionSetFeatures insn_features;
81  compiler_driver_.reset(new CompilerDriver(compiler_backend, insn_set,
82                                            insn_features, false, NULL, 2, true));
83  jobject class_loader = NULL;
84  if (kCompile) {
85    base::TimingLogger timings("OatTest::WriteRead", false, false);
86    compiler_driver_->CompileAll(class_loader, class_linker->GetBootClassPath(), timings);
87  }
88
89  ScopedObjectAccess soa(Thread::Current());
90  ScratchFile tmp;
91  OatWriter oat_writer(class_linker->GetBootClassPath(),
92                       42U,
93                       4096U,
94                       "lue.art",
95                       compiler_driver_.get());
96  bool success = compiler_driver_->WriteElf(GetTestAndroidRoot(),
97                                            !kIsTargetBuild,
98                                            class_linker->GetBootClassPath(),
99                                            oat_writer,
100                                            tmp.GetFile());
101  ASSERT_TRUE(success);
102
103  if (kCompile) {  // OatWriter strips the code, regenerate to compare
104    base::TimingLogger timings("CommonTest::WriteRead", false, false);
105    compiler_driver_->CompileAll(class_loader, class_linker->GetBootClassPath(), timings);
106  }
107  std::string error_msg;
108  UniquePtr<OatFile> oat_file(OatFile::Open(tmp.GetFilename(), tmp.GetFilename(), NULL, false,
109                                            &error_msg));
110  ASSERT_TRUE(oat_file.get() != nullptr) << error_msg;
111  const OatHeader& oat_header = oat_file->GetOatHeader();
112  ASSERT_TRUE(oat_header.IsValid());
113  ASSERT_EQ(1U, oat_header.GetDexFileCount());  // core
114  ASSERT_EQ(42U, oat_header.GetImageFileLocationOatChecksum());
115  ASSERT_EQ(4096U, oat_header.GetImageFileLocationOatDataBegin());
116  ASSERT_EQ("lue.art", oat_header.GetImageFileLocation());
117
118  const DexFile* dex_file = java_lang_dex_file_;
119  uint32_t dex_file_checksum = dex_file->GetLocationChecksum();
120  const OatFile::OatDexFile* oat_dex_file = oat_file->GetOatDexFile(dex_file->GetLocation().c_str(),
121                                                                    &dex_file_checksum);
122  ASSERT_TRUE(oat_dex_file != nullptr);
123  CHECK_EQ(dex_file->GetLocationChecksum(), oat_dex_file->GetDexFileLocationChecksum());
124  for (size_t i = 0; i < dex_file->NumClassDefs(); i++) {
125    const DexFile::ClassDef& class_def = dex_file->GetClassDef(i);
126    const byte* class_data = dex_file->GetClassData(class_def);
127    size_t num_virtual_methods = 0;
128    if (class_data != NULL) {
129      ClassDataItemIterator it(*dex_file, class_data);
130      num_virtual_methods = it.NumVirtualMethods();
131    }
132    const char* descriptor = dex_file->GetClassDescriptor(class_def);
133    SirtRef<mirror::ClassLoader> loader(Thread::Current(), nullptr);
134    mirror::Class* klass = class_linker->FindClass(descriptor, loader);
135
136    UniquePtr<const OatFile::OatClass> oat_class(oat_dex_file->GetOatClass(i));
137    CHECK_EQ(mirror::Class::Status::kStatusNotReady, oat_class->GetStatus()) << descriptor;
138    CHECK_EQ(kCompile ? OatClassType::kOatClassAllCompiled : OatClassType::kOatClassNoneCompiled,
139             oat_class->GetType()) << descriptor;
140
141    size_t method_index = 0;
142    for (size_t i = 0; i < klass->NumDirectMethods(); i++, method_index++) {
143      CheckMethod(klass->GetDirectMethod(i),
144                  oat_class->GetOatMethod(method_index), dex_file);
145    }
146    for (size_t i = 0; i < num_virtual_methods; i++, method_index++) {
147      CheckMethod(klass->GetVirtualMethod(i),
148                  oat_class->GetOatMethod(method_index), dex_file);
149    }
150  }
151}
152
153TEST_F(OatTest, OatHeaderSizeCheck) {
154  // If this test is failing and you have to update these constants,
155  // it is time to update OatHeader::kOatVersion
156  EXPECT_EQ(76U, sizeof(OatHeader));
157  EXPECT_EQ(28U, sizeof(OatMethodOffsets));
158}
159
160TEST_F(OatTest, OatHeaderIsValid) {
161    InstructionSet instruction_set = kX86;
162    InstructionSetFeatures instruction_set_features;
163    std::vector<const DexFile*> dex_files;
164    uint32_t image_file_location_oat_checksum = 0;
165    uint32_t image_file_location_oat_begin = 0;
166    const std::string image_file_location;
167    OatHeader oat_header(instruction_set,
168                         instruction_set_features,
169                         &dex_files,
170                         image_file_location_oat_checksum,
171                         image_file_location_oat_begin,
172                         image_file_location);
173    ASSERT_TRUE(oat_header.IsValid());
174
175    char* magic = const_cast<char*>(oat_header.GetMagic());
176    strcpy(magic, "");  // bad magic
177    ASSERT_FALSE(oat_header.IsValid());
178    strcpy(magic, "oat\n000");  // bad version
179    ASSERT_FALSE(oat_header.IsValid());
180}
181
182}  // namespace art
183