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
27 namespace art {
28
29 class OatTest : public CommonTest {
30 protected:
CheckMethod(mirror::ArtMethod * method,const OatFile::OatMethod & oat_method,const DexFile * dex_file)31 void CheckMethod(mirror::ArtMethod* method,
32 const OatFile::OatMethod& oat_method,
33 const DexFile* dex_file)
34 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
35 const CompiledMethod* compiled_method =
36 compiler_driver_->GetCompiledMethod(MethodReference(dex_file,
37 method->GetDexMethodIndex()));
38
39 if (compiled_method == NULL) {
40 EXPECT_TRUE(oat_method.GetCode() == NULL) << PrettyMethod(method) << " "
41 << oat_method.GetCode();
42 #if !defined(ART_USE_PORTABLE_COMPILER)
43 EXPECT_EQ(oat_method.GetFrameSizeInBytes(), static_cast<uint32_t>(kStackAlignment));
44 EXPECT_EQ(oat_method.GetCoreSpillMask(), 0U);
45 EXPECT_EQ(oat_method.GetFpSpillMask(), 0U);
46 #endif
47 } else {
48 const void* oat_code = oat_method.GetCode();
49 EXPECT_TRUE(oat_code != NULL) << PrettyMethod(method);
50 uintptr_t oat_code_aligned = RoundDown(reinterpret_cast<uintptr_t>(oat_code), 2);
51 oat_code = reinterpret_cast<const void*>(oat_code_aligned);
52
53 const std::vector<uint8_t>& code = compiled_method->GetCode();
54 size_t code_size = code.size() * sizeof(code[0]);
55 EXPECT_EQ(0, memcmp(oat_code, &code[0], code_size))
56 << PrettyMethod(method) << " " << code_size;
57 CHECK_EQ(0, memcmp(oat_code, &code[0], code_size));
58 #if !defined(ART_USE_PORTABLE_COMPILER)
59 EXPECT_EQ(oat_method.GetFrameSizeInBytes(), compiled_method->GetFrameSizeInBytes());
60 EXPECT_EQ(oat_method.GetCoreSpillMask(), compiled_method->GetCoreSpillMask());
61 EXPECT_EQ(oat_method.GetFpSpillMask(), compiled_method->GetFpSpillMask());
62 #endif
63 }
64 }
65 };
66
TEST_F(OatTest,WriteRead)67 TEST_F(OatTest, WriteRead) {
68 const bool compile = false; // DISABLED_ due to the time to compile libcore
69 ClassLinker* class_linker = Runtime::Current()->GetClassLinker();
70
71 // TODO: make selectable
72 #if defined(ART_USE_PORTABLE_COMPILER)
73 CompilerBackend compiler_backend = kPortable;
74 #else
75 CompilerBackend compiler_backend = kQuick;
76 #endif
77 InstructionSet insn_set = kIsTargetBuild ? kThumb2 : kX86;
78 compiler_driver_.reset(new CompilerDriver(compiler_backend, insn_set, false, NULL, 2, true));
79 jobject class_loader = NULL;
80 if (compile) {
81 base::TimingLogger timings("OatTest::WriteRead", false, false);
82 compiler_driver_->CompileAll(class_loader, class_linker->GetBootClassPath(), timings);
83 }
84
85 ScopedObjectAccess soa(Thread::Current());
86 ScratchFile tmp;
87 OatWriter oat_writer(class_linker->GetBootClassPath(),
88 42U,
89 4096U,
90 "lue.art",
91 compiler_driver_.get());
92 bool success = compiler_driver_->WriteElf(GetTestAndroidRoot(),
93 !kIsTargetBuild,
94 class_linker->GetBootClassPath(),
95 oat_writer,
96 tmp.GetFile());
97 ASSERT_TRUE(success);
98
99 if (compile) { // OatWriter strips the code, regenerate to compare
100 base::TimingLogger timings("CommonTest::WriteRead", false, false);
101 compiler_driver_->CompileAll(class_loader, class_linker->GetBootClassPath(), timings);
102 }
103 UniquePtr<OatFile> oat_file(OatFile::Open(tmp.GetFilename(), tmp.GetFilename(), NULL, false));
104 ASSERT_TRUE(oat_file.get() != NULL);
105 const OatHeader& oat_header = oat_file->GetOatHeader();
106 ASSERT_TRUE(oat_header.IsValid());
107 ASSERT_EQ(2U, oat_header.GetDexFileCount()); // core and conscrypt
108 ASSERT_EQ(42U, oat_header.GetImageFileLocationOatChecksum());
109 ASSERT_EQ(4096U, oat_header.GetImageFileLocationOatDataBegin());
110 ASSERT_EQ("lue.art", oat_header.GetImageFileLocation());
111
112 const DexFile* dex_file = java_lang_dex_file_;
113 uint32_t dex_file_checksum = dex_file->GetLocationChecksum();
114 const OatFile::OatDexFile* oat_dex_file = oat_file->GetOatDexFile(dex_file->GetLocation(),
115 &dex_file_checksum);
116 CHECK_EQ(dex_file->GetLocationChecksum(), oat_dex_file->GetDexFileLocationChecksum());
117 for (size_t i = 0; i < dex_file->NumClassDefs(); i++) {
118 const DexFile::ClassDef& class_def = dex_file->GetClassDef(i);
119 const byte* class_data = dex_file->GetClassData(class_def);
120 size_t num_virtual_methods =0;
121 if (class_data != NULL) {
122 ClassDataItemIterator it(*dex_file, class_data);
123 num_virtual_methods = it.NumVirtualMethods();
124 }
125 const char* descriptor = dex_file->GetClassDescriptor(class_def);
126
127 UniquePtr<const OatFile::OatClass> oat_class(oat_dex_file->GetOatClass(i));
128
129 mirror::Class* klass = class_linker->FindClass(descriptor, NULL);
130
131 size_t method_index = 0;
132 for (size_t i = 0; i < klass->NumDirectMethods(); i++, method_index++) {
133 CheckMethod(klass->GetDirectMethod(i),
134 oat_class->GetOatMethod(method_index), dex_file);
135 }
136 for (size_t i = 0; i < num_virtual_methods; i++, method_index++) {
137 CheckMethod(klass->GetVirtualMethod(i),
138 oat_class->GetOatMethod(method_index), dex_file);
139 }
140 }
141 }
142
TEST_F(OatTest,OatHeaderSizeCheck)143 TEST_F(OatTest, OatHeaderSizeCheck) {
144 // If this test is failing and you have to update these constants,
145 // it is time to update OatHeader::kOatVersion
146 EXPECT_EQ(64U, sizeof(OatHeader));
147 EXPECT_EQ(28U, sizeof(OatMethodOffsets));
148 }
149
TEST_F(OatTest,OatHeaderIsValid)150 TEST_F(OatTest, OatHeaderIsValid) {
151 InstructionSet instruction_set = kX86;
152 std::vector<const DexFile*> dex_files;
153 uint32_t image_file_location_oat_checksum = 0;
154 uint32_t image_file_location_oat_begin = 0;
155 const std::string image_file_location;
156 OatHeader oat_header(instruction_set,
157 &dex_files,
158 image_file_location_oat_checksum,
159 image_file_location_oat_begin,
160 image_file_location);
161 ASSERT_TRUE(oat_header.IsValid());
162
163 char* magic = const_cast<char*>(oat_header.GetMagic());
164 strcpy(magic, ""); // bad magic
165 ASSERT_FALSE(oat_header.IsValid());
166 strcpy(magic, "oat\n000"); // bad version
167 ASSERT_FALSE(oat_header.IsValid());
168 }
169
170 } // namespace art
171