Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1 | // Copyright 2011 Google Inc. All Rights Reserved. |
| 2 | // Author: cshapiro@google.com (Carl Shapiro) |
| 3 | |
Brian Carlstrom | 578bbdc | 2011-07-21 14:07:47 -0700 | [diff] [blame] | 4 | #include "class_linker.h" |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 5 | |
| 6 | #include <vector> |
| 7 | #include <utility> |
| 8 | |
Brian Carlstrom | 578bbdc | 2011-07-21 14:07:47 -0700 | [diff] [blame] | 9 | #include "casts.h" |
Brian Carlstrom | 7e49dca | 2011-07-22 18:07:34 -0700 | [diff] [blame] | 10 | #include "dex_cache.h" |
Brian Carlstrom | 578bbdc | 2011-07-21 14:07:47 -0700 | [diff] [blame] | 11 | #include "dex_verifier.h" |
| 12 | #include "heap.h" |
| 13 | #include "logging.h" |
| 14 | #include "monitor.h" |
| 15 | #include "object.h" |
Brian Carlstrom | 7e49dca | 2011-07-22 18:07:34 -0700 | [diff] [blame] | 16 | #include "dex_file.h" |
Brian Carlstrom | 578bbdc | 2011-07-21 14:07:47 -0700 | [diff] [blame] | 17 | #include "scoped_ptr.h" |
| 18 | #include "thread.h" |
| 19 | #include "utils.h" |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 20 | |
| 21 | namespace art { |
| 22 | |
Carl Shapiro | 2ed144c | 2011-07-26 16:52:08 -0700 | [diff] [blame] | 23 | ClassLinker* ClassLinker::Create(const std::vector<DexFile*>& boot_class_path) { |
Carl Shapiro | 61e019d | 2011-07-14 16:53:09 -0700 | [diff] [blame] | 24 | scoped_ptr<ClassLinker> class_linker(new ClassLinker); |
Brian Carlstrom | 578bbdc | 2011-07-21 14:07:47 -0700 | [diff] [blame] | 25 | class_linker->Init(boot_class_path); |
Carl Shapiro | 61e019d | 2011-07-14 16:53:09 -0700 | [diff] [blame] | 26 | // TODO: check for failure during initialization |
| 27 | return class_linker.release(); |
| 28 | } |
| 29 | |
Carl Shapiro | 2ed144c | 2011-07-26 16:52:08 -0700 | [diff] [blame] | 30 | void ClassLinker::Init(const std::vector<DexFile*>& boot_class_path) { |
Brian Carlstrom | 75cb3b4 | 2011-07-28 02:13:36 -0700 | [diff] [blame^] | 31 | init_done_ = false; |
Brian Carlstrom | 578bbdc | 2011-07-21 14:07:47 -0700 | [diff] [blame] | 32 | |
Brian Carlstrom | 75cb3b4 | 2011-07-28 02:13:36 -0700 | [diff] [blame^] | 33 | // java_lang_Class comes first, its needed for AllocClass |
| 34 | Class* java_lang_Class = down_cast<Class*>(Heap::AllocObject(NULL, sizeof(Class))); |
| 35 | CHECK(java_lang_Class != NULL); |
| 36 | java_lang_Class->descriptor_ = "Ljava/lang/Class;"; |
| 37 | java_lang_Class->object_size_ = sizeof(Class); |
| 38 | java_lang_Class->klass_ = java_lang_Class; |
| 39 | // AllocClass(Class*) can now be used |
Brian Carlstrom | a080803 | 2011-07-18 00:39:23 -0700 | [diff] [blame] | 40 | |
Brian Carlstrom | 75cb3b4 | 2011-07-28 02:13:36 -0700 | [diff] [blame^] | 41 | // java_lang_Object comes next so that object_array_class can be created |
| 42 | Class* java_lang_Object = AllocClass(java_lang_Class); |
| 43 | CHECK(java_lang_Object != NULL); |
| 44 | java_lang_Object->descriptor_ = "Ljava/lang/Object;"; |
| 45 | // backfill Object as the super class of Class |
| 46 | java_lang_Class->super_class_ = java_lang_Object; |
Brian Carlstrom | a080803 | 2011-07-18 00:39:23 -0700 | [diff] [blame] | 47 | |
Brian Carlstrom | 75cb3b4 | 2011-07-28 02:13:36 -0700 | [diff] [blame^] | 48 | // object_array_class is for root_classes to provide the storage for these classes |
| 49 | Class* object_array_class = AllocClass(java_lang_Class); |
| 50 | CHECK(object_array_class != NULL); |
Brian Carlstrom | a080803 | 2011-07-18 00:39:23 -0700 | [diff] [blame] | 51 | |
Brian Carlstrom | 75cb3b4 | 2011-07-28 02:13:36 -0700 | [diff] [blame^] | 52 | // create storage for root classes, save away our work so far |
| 53 | class_roots_ = ObjectArray<Class>::Alloc(object_array_class, kClassRootsMax); |
| 54 | class_roots_->Set(kJavaLangClass, java_lang_Class); |
| 55 | class_roots_->Set(kJavaLangObject, java_lang_Object); |
| 56 | class_roots_->Set(kObjectArrayClass, object_array_class); |
| 57 | // now that these are registered, we can use AllocClass() and AllocObjectArray |
Brian Carlstrom | a080803 | 2011-07-18 00:39:23 -0700 | [diff] [blame] | 58 | |
Brian Carlstrom | 75cb3b4 | 2011-07-28 02:13:36 -0700 | [diff] [blame^] | 59 | // setup boot_class_path_ now that we can use AllocObjectArray to |
| 60 | // DexCache instances |
Brian Carlstrom | 913af1b | 2011-07-23 21:41:13 -0700 | [diff] [blame] | 61 | for (size_t i = 0; i != boot_class_path.size(); ++i) { |
| 62 | AppendToBootClassPath(boot_class_path[i]); |
| 63 | } |
Brian Carlstrom | 75cb3b4 | 2011-07-28 02:13:36 -0700 | [diff] [blame^] | 64 | // now we can use FindSystemClass, at least for non-arrays classes. |
Brian Carlstrom | 913af1b | 2011-07-23 21:41:13 -0700 | [diff] [blame] | 65 | |
Brian Carlstrom | 75cb3b4 | 2011-07-28 02:13:36 -0700 | [diff] [blame^] | 66 | // run Object and Class to setup their dex_cache_ fields and register them in classes_. |
| 67 | // we also override their object_size_ values to accommodate the extra C++ fields. |
| 68 | Class* Object_class = FindSystemClass(java_lang_Object->GetDescriptor()); |
| 69 | CHECK_EQ(java_lang_Object, Object_class); |
| 70 | CHECK_LE(java_lang_Object->object_size_, sizeof(Object)); |
| 71 | java_lang_Object->object_size_ = sizeof(Object); |
| 72 | Class* Class_class = FindSystemClass(java_lang_Class->GetDescriptor()); |
| 73 | CHECK_EQ(java_lang_Class, Class_class); |
| 74 | CHECK_LE(java_lang_Class->object_size_, sizeof(Class)); |
| 75 | java_lang_Class->object_size_ = sizeof(Class); |
Brian Carlstrom | 913af1b | 2011-07-23 21:41:13 -0700 | [diff] [blame] | 76 | |
Brian Carlstrom | 75cb3b4 | 2011-07-28 02:13:36 -0700 | [diff] [blame^] | 77 | // set special sizes for these C++ extended classes (Field, Method, String). |
| 78 | // we also remember them in class_roots_ to construct them within ClassLinker |
| 79 | Class* java_lang_reflect_Field = FindSystemClass("Ljava/lang/reflect/Field;"); |
| 80 | CHECK(java_lang_reflect_Field != NULL); |
| 81 | CHECK_LE(java_lang_reflect_Field->object_size_, std::max(sizeof(StaticField), sizeof(InstanceField))); |
| 82 | java_lang_reflect_Field->object_size_ = std::max(sizeof(StaticField), sizeof(InstanceField)); |
| 83 | class_roots_->Set(kJavaLangReflectField, java_lang_reflect_Field); |
| 84 | |
| 85 | Class* java_lang_reflect_Method = FindSystemClass("Ljava/lang/reflect/Method;"); |
| 86 | CHECK(java_lang_reflect_Method != NULL); |
| 87 | CHECK_LE(java_lang_reflect_Method->object_size_, sizeof(Method)); |
| 88 | java_lang_reflect_Method->object_size_ = sizeof(Method); |
| 89 | class_roots_->Set(kJavaLangReflectMethod, java_lang_reflect_Method); |
| 90 | |
| 91 | Class* java_lang_String = FindSystemClass("Ljava/lang/String;"); |
| 92 | CHECK(java_lang_String != NULL); |
| 93 | CHECK_EQ(java_lang_String->object_size_, sizeof(String)); |
| 94 | java_lang_String->object_size_ = sizeof(String); |
| 95 | class_roots_->Set(kJavaLangString, java_lang_String); |
| 96 | |
| 97 | // Setup a single, global copy of "interfaces" and "iftable" for |
| 98 | // reuse across array classes |
| 99 | Class* java_lang_Cloneable = AllocClass(); |
| 100 | CHECK(java_lang_Cloneable != NULL); |
| 101 | java_lang_Cloneable->descriptor_ = "Ljava/lang/Cloneable;"; |
| 102 | |
| 103 | Class* java_io_Serializable = AllocClass(); |
| 104 | CHECK(java_io_Serializable != NULL); |
| 105 | java_io_Serializable->descriptor_ = "Ljava/io/Serializable;"; |
Brian Carlstrom | 913af1b | 2011-07-23 21:41:13 -0700 | [diff] [blame] | 106 | |
Brian Carlstrom | 4a96b60 | 2011-07-26 16:40:23 -0700 | [diff] [blame] | 107 | array_interfaces_ = AllocObjectArray<Class>(2); |
Brian Carlstrom | 913af1b | 2011-07-23 21:41:13 -0700 | [diff] [blame] | 108 | CHECK(array_interfaces_ != NULL); |
Brian Carlstrom | 75cb3b4 | 2011-07-28 02:13:36 -0700 | [diff] [blame^] | 109 | array_interfaces_->Set(0, java_lang_Cloneable); |
| 110 | array_interfaces_->Set(1, java_io_Serializable); |
Brian Carlstrom | 913af1b | 2011-07-23 21:41:13 -0700 | [diff] [blame] | 111 | |
| 112 | // We assume that Cloneable/Serializable don't have superinterfaces -- |
| 113 | // normally we'd have to crawl up and explicitly list all of the |
| 114 | // supers as well. These interfaces don't have any methods, so we |
| 115 | // don't have to worry about the ifviPool either. |
| 116 | array_iftable_ = new InterfaceEntry[2]; |
| 117 | CHECK(array_iftable_ != NULL); |
| 118 | memset(array_iftable_, 0, sizeof(InterfaceEntry) * 2); |
Brian Carlstrom | 4a96b60 | 2011-07-26 16:40:23 -0700 | [diff] [blame] | 119 | array_iftable_[0].SetClass(array_interfaces_->Get(0)); |
| 120 | array_iftable_[1].SetClass(array_interfaces_->Get(1)); |
Brian Carlstrom | 75cb3b4 | 2011-07-28 02:13:36 -0700 | [diff] [blame^] | 121 | // now FindClass can be used for non-primitive array classes |
Brian Carlstrom | 913af1b | 2011-07-23 21:41:13 -0700 | [diff] [blame] | 122 | |
Brian Carlstrom | 75cb3b4 | 2011-07-28 02:13:36 -0700 | [diff] [blame^] | 123 | // run Object[] through FindClass to complete initialization |
| 124 | Class* Object_array_class = FindSystemClass("[Ljava/lang/Object;"); |
| 125 | CHECK_EQ(object_array_class, Object_array_class); |
Brian Carlstrom | 578bbdc | 2011-07-21 14:07:47 -0700 | [diff] [blame] | 126 | |
Brian Carlstrom | 75cb3b4 | 2011-07-28 02:13:36 -0700 | [diff] [blame^] | 127 | // Setup the primitive type classes. |
| 128 | class_roots_->Set(kPrimitiveByte, CreatePrimitiveClass("B")); |
| 129 | class_roots_->Set(kPrimitiveChar, CreatePrimitiveClass("C")); |
| 130 | class_roots_->Set(kPrimitiveDouble, CreatePrimitiveClass("D")); |
| 131 | class_roots_->Set(kPrimitiveFloat, CreatePrimitiveClass("F")); |
| 132 | class_roots_->Set(kPrimitiveInt, CreatePrimitiveClass("I")); |
| 133 | class_roots_->Set(kPrimitiveLong, CreatePrimitiveClass("J")); |
| 134 | class_roots_->Set(kPrimitiveShort, CreatePrimitiveClass("S")); |
| 135 | class_roots_->Set(kPrimitiveBoolean, CreatePrimitiveClass("Z")); |
| 136 | class_roots_->Set(kPrimitiveVoid, CreatePrimitiveClass("V")); |
| 137 | // now we can use FindSystemClass for anything, including for "[C" |
| 138 | |
| 139 | class_roots_->Set(kCharArrayClass, FindSystemClass("[C")); |
| 140 | // Now AllocString* can be used |
| 141 | |
| 142 | // ensure all class_roots_ were initialized |
| 143 | for (size_t i = 0; i < kClassRootsMax; i++) { |
| 144 | CHECK(class_roots_->Get(i) != NULL); |
| 145 | } |
| 146 | |
| 147 | // disable the slow paths in FindClass and CreatePrimitiveClass now |
| 148 | // that Object, Class, and Object[] are setup |
| 149 | init_done_ = true; |
| 150 | } |
| 151 | |
| 152 | void ClassLinker::VisitRoots(RootVistor* rootVisitor, void* arg) { |
| 153 | for (size_t i = 0; i < kClassRootsMax; i++) { |
| 154 | rootVisitor(class_roots_->Get(i), arg); |
| 155 | } |
| 156 | |
| 157 | for (size_t i = 0; i < dex_caches_.size(); i++) { |
| 158 | rootVisitor(dex_caches_[i], arg); |
| 159 | } |
| 160 | |
| 161 | // TODO: acquire classes_lock_ |
| 162 | typedef Table::const_iterator It; // TODO: C++0x auto |
| 163 | for (It it = classes_.begin(), end = classes_.end(); it != end; ++it) { |
| 164 | rootVisitor(it->second, arg); |
| 165 | } |
| 166 | // TODO: release classes_lock_ |
| 167 | |
| 168 | rootVisitor(array_interfaces_, arg); |
Brian Carlstrom | 578bbdc | 2011-07-21 14:07:47 -0700 | [diff] [blame] | 169 | } |
| 170 | |
Brian Carlstrom | 7e49dca | 2011-07-22 18:07:34 -0700 | [diff] [blame] | 171 | DexCache* ClassLinker::AllocDexCache() { |
Brian Carlstrom | a40f9bc | 2011-07-26 21:26:07 -0700 | [diff] [blame] | 172 | return down_cast<DexCache*>(AllocObjectArray<Object>(DexCache::kMax)); |
Brian Carlstrom | a080803 | 2011-07-18 00:39:23 -0700 | [diff] [blame] | 173 | } |
| 174 | |
Brian Carlstrom | 75cb3b4 | 2011-07-28 02:13:36 -0700 | [diff] [blame^] | 175 | Class* ClassLinker::AllocClass(Class* java_lang_Class) { |
| 176 | return down_cast<Class*>(Object::Alloc(java_lang_Class)); |
| 177 | } |
| 178 | |
| 179 | Class* ClassLinker::AllocClass() { |
| 180 | return AllocClass(class_roots_->Get(kJavaLangClass)); |
Brian Carlstrom | a080803 | 2011-07-18 00:39:23 -0700 | [diff] [blame] | 181 | } |
| 182 | |
| 183 | StaticField* ClassLinker::AllocStaticField() { |
Brian Carlstrom | 75cb3b4 | 2011-07-28 02:13:36 -0700 | [diff] [blame^] | 184 | return down_cast<StaticField*>(Heap::AllocObject(class_roots_->Get(kJavaLangReflectField), |
Carl Shapiro | 69759ea | 2011-07-21 18:13:35 -0700 | [diff] [blame] | 185 | sizeof(StaticField))); |
Brian Carlstrom | a080803 | 2011-07-18 00:39:23 -0700 | [diff] [blame] | 186 | } |
| 187 | |
| 188 | InstanceField* ClassLinker::AllocInstanceField() { |
Brian Carlstrom | 75cb3b4 | 2011-07-28 02:13:36 -0700 | [diff] [blame^] | 189 | return down_cast<InstanceField*>(Heap::AllocObject(class_roots_->Get(kJavaLangReflectField), |
Carl Shapiro | 69759ea | 2011-07-21 18:13:35 -0700 | [diff] [blame] | 190 | sizeof(InstanceField))); |
Brian Carlstrom | a080803 | 2011-07-18 00:39:23 -0700 | [diff] [blame] | 191 | } |
| 192 | |
| 193 | Method* ClassLinker::AllocMethod() { |
Brian Carlstrom | 75cb3b4 | 2011-07-28 02:13:36 -0700 | [diff] [blame^] | 194 | return down_cast<Method*>(Heap::AllocObject(class_roots_->Get(kJavaLangReflectMethod), |
Carl Shapiro | 69759ea | 2011-07-21 18:13:35 -0700 | [diff] [blame] | 195 | sizeof(Method))); |
Carl Shapiro | 565f507 | 2011-07-10 13:39:43 -0700 | [diff] [blame] | 196 | } |
| 197 | |
Brian Carlstrom | 0b138b2 | 2011-07-27 15:19:17 -0700 | [diff] [blame] | 198 | String* ClassLinker::AllocStringFromModifiedUtf8(int32_t utf16_length, |
| 199 | const char* utf8_data_in) { |
Brian Carlstrom | 75cb3b4 | 2011-07-28 02:13:36 -0700 | [diff] [blame^] | 200 | return String::AllocFromModifiedUtf8(class_roots_->Get(kJavaLangString), |
| 201 | class_roots_->Get(kCharArrayClass), |
Brian Carlstrom | 0b138b2 | 2011-07-27 15:19:17 -0700 | [diff] [blame] | 202 | utf16_length, |
| 203 | utf8_data_in); |
| 204 | } |
| 205 | |
Brian Carlstrom | 6cc1845 | 2011-07-18 15:10:33 -0700 | [diff] [blame] | 206 | Class* ClassLinker::FindClass(const StringPiece& descriptor, |
Brian Carlstrom | 578bbdc | 2011-07-21 14:07:47 -0700 | [diff] [blame] | 207 | Object* class_loader, |
Brian Carlstrom | f615a61 | 2011-07-23 12:50:34 -0700 | [diff] [blame] | 208 | const DexFile* dex_file) { |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 209 | Thread* self = Thread::Current(); |
Brian Carlstrom | a331b3c | 2011-07-18 17:47:56 -0700 | [diff] [blame] | 210 | DCHECK(self != NULL); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 211 | CHECK(!self->IsExceptionPending()); |
| 212 | // Find the class in the loaded classes table. |
| 213 | Class* klass = LookupClass(descriptor, class_loader); |
| 214 | if (klass == NULL) { |
| 215 | // Class is not yet loaded. |
Brian Carlstrom | a331b3c | 2011-07-18 17:47:56 -0700 | [diff] [blame] | 216 | if (descriptor[0] == '[') { |
Brian Carlstrom | f615a61 | 2011-07-23 12:50:34 -0700 | [diff] [blame] | 217 | return CreateArrayClass(descriptor, class_loader, dex_file); |
Brian Carlstrom | a331b3c | 2011-07-18 17:47:56 -0700 | [diff] [blame] | 218 | } |
Brian Carlstrom | 578bbdc | 2011-07-21 14:07:47 -0700 | [diff] [blame] | 219 | ClassPathEntry pair; |
Brian Carlstrom | f615a61 | 2011-07-23 12:50:34 -0700 | [diff] [blame] | 220 | if (dex_file == NULL) { |
Brian Carlstrom | 578bbdc | 2011-07-21 14:07:47 -0700 | [diff] [blame] | 221 | pair = FindInBootClassPath(descriptor); |
| 222 | } else { |
Brian Carlstrom | f615a61 | 2011-07-23 12:50:34 -0700 | [diff] [blame] | 223 | pair.first = dex_file; |
| 224 | pair.second = dex_file->FindClassDef(descriptor); |
Brian Carlstrom | 578bbdc | 2011-07-21 14:07:47 -0700 | [diff] [blame] | 225 | } |
| 226 | if (pair.second == NULL) { |
Brian Carlstrom | be97785 | 2011-07-19 14:54:54 -0700 | [diff] [blame] | 227 | LG << "Class " << descriptor << " not found"; // TODO: NoClassDefFoundError |
Brian Carlstrom | 6cc1845 | 2011-07-18 15:10:33 -0700 | [diff] [blame] | 228 | return NULL; |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 229 | } |
Brian Carlstrom | f615a61 | 2011-07-23 12:50:34 -0700 | [diff] [blame] | 230 | const DexFile* dex_file = pair.first; |
| 231 | const DexFile::ClassDef* dex_class_def = pair.second; |
| 232 | DexCache* dex_cache = FindDexCache(dex_file); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 233 | // Load the class from the dex file. |
Brian Carlstrom | 75cb3b4 | 2011-07-28 02:13:36 -0700 | [diff] [blame^] | 234 | if (!init_done_) { |
| 235 | // finish up init of hand crafted class_roots_ |
| 236 | if (descriptor == "Ljava/lang/Object;") { |
| 237 | klass = class_roots_->Get(kJavaLangObject); |
| 238 | } else if (descriptor == "Ljava/lang/Class;") { |
| 239 | klass = class_roots_->Get(kJavaLangClass); |
| 240 | } else { |
| 241 | klass = AllocClass(); |
| 242 | } |
Carl Shapiro | 565f507 | 2011-07-10 13:39:43 -0700 | [diff] [blame] | 243 | } else { |
Brian Carlstrom | 75cb3b4 | 2011-07-28 02:13:36 -0700 | [diff] [blame^] | 244 | klass = AllocClass(); |
Carl Shapiro | 565f507 | 2011-07-10 13:39:43 -0700 | [diff] [blame] | 245 | } |
Brian Carlstrom | 75cb3b4 | 2011-07-28 02:13:36 -0700 | [diff] [blame^] | 246 | klass->dex_cache_ = dex_cache; |
Brian Carlstrom | f615a61 | 2011-07-23 12:50:34 -0700 | [diff] [blame] | 247 | LoadClass(*dex_file, *dex_class_def, klass); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 248 | // Check for a pending exception during load |
| 249 | if (self->IsExceptionPending()) { |
| 250 | // TODO: free native allocations in klass |
| 251 | return NULL; |
| 252 | } |
| 253 | { |
| 254 | ObjectLock lock(klass); |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 255 | klass->clinit_thread_id_ = self->GetId(); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 256 | // Add the newly loaded class to the loaded classes table. |
| 257 | bool success = InsertClass(klass); |
| 258 | if (!success) { |
| 259 | // We may fail to insert if we raced with another thread. |
| 260 | klass->clinit_thread_id_ = 0; |
| 261 | // TODO: free native allocations in klass |
| 262 | klass = LookupClass(descriptor, class_loader); |
| 263 | CHECK(klass != NULL); |
| 264 | } else { |
| 265 | // Link the class. |
Brian Carlstrom | f615a61 | 2011-07-23 12:50:34 -0700 | [diff] [blame] | 266 | if (!LinkClass(klass, dex_file)) { |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 267 | // Linking failed. |
| 268 | // TODO: CHECK(self->IsExceptionPending()); |
| 269 | lock.NotifyAll(); |
| 270 | return NULL; |
| 271 | } |
| 272 | } |
| 273 | } |
| 274 | } |
| 275 | // Link the class if it has not already been linked. |
| 276 | if (!klass->IsLinked() && !klass->IsErroneous()) { |
| 277 | ObjectLock lock(klass); |
| 278 | // Check for circular dependencies between classes. |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 279 | if (!klass->IsLinked() && klass->clinit_thread_id_ == self->GetId()) { |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 280 | LG << "Recursive link"; // TODO: ClassCircularityError |
| 281 | return NULL; |
| 282 | } |
| 283 | // Wait for the pending initialization to complete. |
| 284 | while (!klass->IsLinked() && !klass->IsErroneous()) { |
| 285 | lock.Wait(); |
| 286 | } |
| 287 | } |
| 288 | if (klass->IsErroneous()) { |
| 289 | LG << "EarlierClassFailure"; // TODO: EarlierClassFailure |
| 290 | return NULL; |
| 291 | } |
| 292 | // Return the loaded class. No exceptions should be pending. |
| 293 | CHECK(!self->IsExceptionPending()); |
| 294 | return klass; |
| 295 | } |
| 296 | |
Brian Carlstrom | f615a61 | 2011-07-23 12:50:34 -0700 | [diff] [blame] | 297 | void ClassLinker::LoadClass(const DexFile& dex_file, |
| 298 | const DexFile::ClassDef& dex_class_def, |
Brian Carlstrom | 578bbdc | 2011-07-21 14:07:47 -0700 | [diff] [blame] | 299 | Class* klass) { |
Brian Carlstrom | 934486c | 2011-07-12 23:42:50 -0700 | [diff] [blame] | 300 | CHECK(klass != NULL); |
Brian Carlstrom | 7e49dca | 2011-07-22 18:07:34 -0700 | [diff] [blame] | 301 | CHECK(klass->dex_cache_ != NULL); |
Brian Carlstrom | f615a61 | 2011-07-23 12:50:34 -0700 | [diff] [blame] | 302 | const byte* class_data = dex_file.GetClassData(dex_class_def); |
| 303 | DexFile::ClassDataHeader header = dex_file.ReadClassDataHeader(&class_data); |
Brian Carlstrom | 934486c | 2011-07-12 23:42:50 -0700 | [diff] [blame] | 304 | |
Brian Carlstrom | f615a61 | 2011-07-23 12:50:34 -0700 | [diff] [blame] | 305 | const char* descriptor = dex_file.GetClassDescriptor(dex_class_def); |
Brian Carlstrom | 934486c | 2011-07-12 23:42:50 -0700 | [diff] [blame] | 306 | CHECK(descriptor != NULL); |
| 307 | |
Brian Carlstrom | 75cb3b4 | 2011-07-28 02:13:36 -0700 | [diff] [blame^] | 308 | klass->klass_ = class_roots_->Get(kJavaLangClass); |
Brian Carlstrom | 934486c | 2011-07-12 23:42:50 -0700 | [diff] [blame] | 309 | klass->descriptor_.set(descriptor); |
| 310 | klass->descriptor_alloc_ = NULL; |
Brian Carlstrom | f615a61 | 2011-07-23 12:50:34 -0700 | [diff] [blame] | 311 | klass->access_flags_ = dex_class_def.access_flags_; |
Brian Carlstrom | 934486c | 2011-07-12 23:42:50 -0700 | [diff] [blame] | 312 | klass->class_loader_ = NULL; // TODO |
| 313 | klass->primitive_type_ = Class::kPrimNot; |
| 314 | klass->status_ = Class::kStatusIdx; |
| 315 | |
| 316 | klass->super_class_ = NULL; |
Brian Carlstrom | f615a61 | 2011-07-23 12:50:34 -0700 | [diff] [blame] | 317 | klass->super_class_idx_ = dex_class_def.superclass_idx_; |
Brian Carlstrom | 934486c | 2011-07-12 23:42:50 -0700 | [diff] [blame] | 318 | |
Brian Carlstrom | 913af1b | 2011-07-23 21:41:13 -0700 | [diff] [blame] | 319 | size_t num_static_fields = header.static_fields_size_; |
| 320 | size_t num_instance_fields = header.instance_fields_size_; |
| 321 | size_t num_direct_methods = header.direct_methods_size_; |
| 322 | size_t num_virtual_methods = header.virtual_methods_size_; |
Brian Carlstrom | 934486c | 2011-07-12 23:42:50 -0700 | [diff] [blame] | 323 | |
Brian Carlstrom | f615a61 | 2011-07-23 12:50:34 -0700 | [diff] [blame] | 324 | klass->source_file_ = dex_file.dexGetSourceFile(dex_class_def); |
Brian Carlstrom | 934486c | 2011-07-12 23:42:50 -0700 | [diff] [blame] | 325 | |
| 326 | // Load class interfaces. |
Brian Carlstrom | f615a61 | 2011-07-23 12:50:34 -0700 | [diff] [blame] | 327 | LoadInterfaces(dex_file, dex_class_def, klass); |
Brian Carlstrom | 934486c | 2011-07-12 23:42:50 -0700 | [diff] [blame] | 328 | |
| 329 | // Load static fields. |
Brian Carlstrom | 913af1b | 2011-07-23 21:41:13 -0700 | [diff] [blame] | 330 | DCHECK(klass->sfields_ == NULL); |
| 331 | if (num_static_fields != 0) { |
Brian Carlstrom | 4a96b60 | 2011-07-26 16:40:23 -0700 | [diff] [blame] | 332 | klass->sfields_ = AllocObjectArray<StaticField>(num_static_fields); |
Brian Carlstrom | 934486c | 2011-07-12 23:42:50 -0700 | [diff] [blame] | 333 | uint32_t last_idx = 0; |
Carl Shapiro | 69759ea | 2011-07-21 18:13:35 -0700 | [diff] [blame] | 334 | for (size_t i = 0; i < klass->NumStaticFields(); ++i) { |
Brian Carlstrom | f615a61 | 2011-07-23 12:50:34 -0700 | [diff] [blame] | 335 | DexFile::Field dex_field; |
| 336 | dex_file.dexReadClassDataField(&class_data, &dex_field, &last_idx); |
Brian Carlstrom | a080803 | 2011-07-18 00:39:23 -0700 | [diff] [blame] | 337 | StaticField* sfield = AllocStaticField(); |
Brian Carlstrom | 913af1b | 2011-07-23 21:41:13 -0700 | [diff] [blame] | 338 | klass->SetStaticField(i, sfield); |
Brian Carlstrom | f615a61 | 2011-07-23 12:50:34 -0700 | [diff] [blame] | 339 | LoadField(dex_file, dex_field, klass, sfield); |
Brian Carlstrom | 934486c | 2011-07-12 23:42:50 -0700 | [diff] [blame] | 340 | } |
| 341 | } |
| 342 | |
| 343 | // Load instance fields. |
Brian Carlstrom | 913af1b | 2011-07-23 21:41:13 -0700 | [diff] [blame] | 344 | DCHECK(klass->ifields_ == NULL); |
| 345 | if (num_instance_fields != 0) { |
Brian Carlstrom | 934486c | 2011-07-12 23:42:50 -0700 | [diff] [blame] | 346 | // TODO: allocate on the object heap. |
Brian Carlstrom | 4a96b60 | 2011-07-26 16:40:23 -0700 | [diff] [blame] | 347 | klass->ifields_ = AllocObjectArray<InstanceField>(num_instance_fields); |
Brian Carlstrom | 934486c | 2011-07-12 23:42:50 -0700 | [diff] [blame] | 348 | uint32_t last_idx = 0; |
| 349 | for (size_t i = 0; i < klass->NumInstanceFields(); ++i) { |
Brian Carlstrom | f615a61 | 2011-07-23 12:50:34 -0700 | [diff] [blame] | 350 | DexFile::Field dex_field; |
| 351 | dex_file.dexReadClassDataField(&class_data, &dex_field, &last_idx); |
Brian Carlstrom | a080803 | 2011-07-18 00:39:23 -0700 | [diff] [blame] | 352 | InstanceField* ifield = AllocInstanceField(); |
Brian Carlstrom | 913af1b | 2011-07-23 21:41:13 -0700 | [diff] [blame] | 353 | klass->SetInstanceField(i, ifield); |
Brian Carlstrom | f615a61 | 2011-07-23 12:50:34 -0700 | [diff] [blame] | 354 | LoadField(dex_file, dex_field, klass, ifield); |
Brian Carlstrom | 934486c | 2011-07-12 23:42:50 -0700 | [diff] [blame] | 355 | } |
| 356 | } |
| 357 | |
| 358 | // Load direct methods. |
Brian Carlstrom | 913af1b | 2011-07-23 21:41:13 -0700 | [diff] [blame] | 359 | DCHECK(klass->direct_methods_ == NULL); |
| 360 | if (num_direct_methods != 0) { |
Brian Carlstrom | 934486c | 2011-07-12 23:42:50 -0700 | [diff] [blame] | 361 | // TODO: append direct methods to class object |
Brian Carlstrom | 4a96b60 | 2011-07-26 16:40:23 -0700 | [diff] [blame] | 362 | klass->direct_methods_ = AllocObjectArray<Method>(num_direct_methods); |
Brian Carlstrom | 934486c | 2011-07-12 23:42:50 -0700 | [diff] [blame] | 363 | uint32_t last_idx = 0; |
| 364 | for (size_t i = 0; i < klass->NumDirectMethods(); ++i) { |
Brian Carlstrom | f615a61 | 2011-07-23 12:50:34 -0700 | [diff] [blame] | 365 | DexFile::Method dex_method; |
| 366 | dex_file.dexReadClassDataMethod(&class_data, &dex_method, &last_idx); |
Brian Carlstrom | a080803 | 2011-07-18 00:39:23 -0700 | [diff] [blame] | 367 | Method* meth = AllocMethod(); |
Brian Carlstrom | 913af1b | 2011-07-23 21:41:13 -0700 | [diff] [blame] | 368 | klass->SetDirectMethod(i, meth); |
Brian Carlstrom | f615a61 | 2011-07-23 12:50:34 -0700 | [diff] [blame] | 369 | LoadMethod(dex_file, dex_method, klass, meth); |
Brian Carlstrom | 934486c | 2011-07-12 23:42:50 -0700 | [diff] [blame] | 370 | // TODO: register maps |
| 371 | } |
| 372 | } |
| 373 | |
| 374 | // Load virtual methods. |
Brian Carlstrom | 913af1b | 2011-07-23 21:41:13 -0700 | [diff] [blame] | 375 | DCHECK(klass->virtual_methods_ == NULL); |
| 376 | if (num_virtual_methods != 0) { |
Brian Carlstrom | 934486c | 2011-07-12 23:42:50 -0700 | [diff] [blame] | 377 | // TODO: append virtual methods to class object |
Brian Carlstrom | 4a96b60 | 2011-07-26 16:40:23 -0700 | [diff] [blame] | 378 | klass->virtual_methods_ = AllocObjectArray<Method>(num_virtual_methods); |
Brian Carlstrom | 934486c | 2011-07-12 23:42:50 -0700 | [diff] [blame] | 379 | uint32_t last_idx = 0; |
| 380 | for (size_t i = 0; i < klass->NumVirtualMethods(); ++i) { |
Brian Carlstrom | f615a61 | 2011-07-23 12:50:34 -0700 | [diff] [blame] | 381 | DexFile::Method dex_method; |
| 382 | dex_file.dexReadClassDataMethod(&class_data, &dex_method, &last_idx); |
Brian Carlstrom | a080803 | 2011-07-18 00:39:23 -0700 | [diff] [blame] | 383 | Method* meth = AllocMethod(); |
Brian Carlstrom | 913af1b | 2011-07-23 21:41:13 -0700 | [diff] [blame] | 384 | klass->SetVirtualMethod(i, meth); |
Brian Carlstrom | f615a61 | 2011-07-23 12:50:34 -0700 | [diff] [blame] | 385 | LoadMethod(dex_file, dex_method, klass, meth); |
Brian Carlstrom | 934486c | 2011-07-12 23:42:50 -0700 | [diff] [blame] | 386 | // TODO: register maps |
| 387 | } |
| 388 | } |
Brian Carlstrom | 934486c | 2011-07-12 23:42:50 -0700 | [diff] [blame] | 389 | } |
| 390 | |
Brian Carlstrom | f615a61 | 2011-07-23 12:50:34 -0700 | [diff] [blame] | 391 | void ClassLinker::LoadInterfaces(const DexFile& dex_file, |
| 392 | const DexFile::ClassDef& dex_class_def, |
Brian Carlstrom | 934486c | 2011-07-12 23:42:50 -0700 | [diff] [blame] | 393 | Class* klass) { |
Brian Carlstrom | f615a61 | 2011-07-23 12:50:34 -0700 | [diff] [blame] | 394 | const DexFile::TypeList* list = dex_file.GetInterfacesList(dex_class_def); |
Brian Carlstrom | 934486c | 2011-07-12 23:42:50 -0700 | [diff] [blame] | 395 | if (list != NULL) { |
Brian Carlstrom | 913af1b | 2011-07-23 21:41:13 -0700 | [diff] [blame] | 396 | DCHECK(klass->interfaces_ == NULL); |
Brian Carlstrom | 4a96b60 | 2011-07-26 16:40:23 -0700 | [diff] [blame] | 397 | klass->interfaces_ = AllocObjectArray<Class>(list->Size()); |
Brian Carlstrom | 913af1b | 2011-07-23 21:41:13 -0700 | [diff] [blame] | 398 | DCHECK(klass->interfaces_idx_ == NULL); |
| 399 | klass->interfaces_idx_ = new uint32_t[list->Size()]; |
Brian Carlstrom | 934486c | 2011-07-12 23:42:50 -0700 | [diff] [blame] | 400 | for (size_t i = 0; i < list->Size(); ++i) { |
Brian Carlstrom | f615a61 | 2011-07-23 12:50:34 -0700 | [diff] [blame] | 401 | const DexFile::TypeItem& type_item = list->GetTypeItem(i); |
Brian Carlstrom | 913af1b | 2011-07-23 21:41:13 -0700 | [diff] [blame] | 402 | klass->interfaces_idx_[i] = type_item.type_idx_; |
Brian Carlstrom | 934486c | 2011-07-12 23:42:50 -0700 | [diff] [blame] | 403 | } |
| 404 | } |
| 405 | } |
| 406 | |
Brian Carlstrom | f615a61 | 2011-07-23 12:50:34 -0700 | [diff] [blame] | 407 | void ClassLinker::LoadField(const DexFile& dex_file, |
| 408 | const DexFile::Field& src, |
Brian Carlstrom | 578bbdc | 2011-07-21 14:07:47 -0700 | [diff] [blame] | 409 | Class* klass, |
Brian Carlstrom | 934486c | 2011-07-12 23:42:50 -0700 | [diff] [blame] | 410 | Field* dst) { |
Brian Carlstrom | f615a61 | 2011-07-23 12:50:34 -0700 | [diff] [blame] | 411 | const DexFile::FieldId& field_id = dex_file.GetFieldId(src.field_idx_); |
Brian Carlstrom | 934486c | 2011-07-12 23:42:50 -0700 | [diff] [blame] | 412 | dst->klass_ = klass; |
Brian Carlstrom | ae3ac01 | 2011-07-27 01:30:28 -0700 | [diff] [blame] | 413 | dst->name_.set(dex_file.dexStringById(field_id.name_idx_)); |
| 414 | dst->descriptor_.set(dex_file.dexStringByTypeIdx(field_id.type_idx_)); |
Brian Carlstrom | 934486c | 2011-07-12 23:42:50 -0700 | [diff] [blame] | 415 | dst->access_flags_ = src.access_flags_; |
| 416 | } |
| 417 | |
Brian Carlstrom | f615a61 | 2011-07-23 12:50:34 -0700 | [diff] [blame] | 418 | void ClassLinker::LoadMethod(const DexFile& dex_file, |
| 419 | const DexFile::Method& src, |
Brian Carlstrom | 578bbdc | 2011-07-21 14:07:47 -0700 | [diff] [blame] | 420 | Class* klass, |
Brian Carlstrom | 934486c | 2011-07-12 23:42:50 -0700 | [diff] [blame] | 421 | Method* dst) { |
Brian Carlstrom | f615a61 | 2011-07-23 12:50:34 -0700 | [diff] [blame] | 422 | const DexFile::MethodId& method_id = dex_file.GetMethodId(src.method_idx_); |
Brian Carlstrom | 934486c | 2011-07-12 23:42:50 -0700 | [diff] [blame] | 423 | dst->klass_ = klass; |
Brian Carlstrom | f615a61 | 2011-07-23 12:50:34 -0700 | [diff] [blame] | 424 | dst->name_.set(dex_file.dexStringById(method_id.name_idx_)); |
Brian Carlstrom | 934486c | 2011-07-12 23:42:50 -0700 | [diff] [blame] | 425 | dst->proto_idx_ = method_id.proto_idx_; |
Brian Carlstrom | f615a61 | 2011-07-23 12:50:34 -0700 | [diff] [blame] | 426 | dst->shorty_.set(dex_file.GetShorty(method_id.proto_idx_)); |
Brian Carlstrom | 934486c | 2011-07-12 23:42:50 -0700 | [diff] [blame] | 427 | dst->access_flags_ = src.access_flags_; |
| 428 | |
| 429 | // TODO: check for finalize method |
| 430 | |
Brian Carlstrom | f615a61 | 2011-07-23 12:50:34 -0700 | [diff] [blame] | 431 | const DexFile::CodeItem* code_item = dex_file.GetCodeItem(src); |
Brian Carlstrom | 934486c | 2011-07-12 23:42:50 -0700 | [diff] [blame] | 432 | if (code_item != NULL) { |
| 433 | dst->num_registers_ = code_item->registers_size_; |
| 434 | dst->num_ins_ = code_item->ins_size_; |
| 435 | dst->num_outs_ = code_item->outs_size_; |
| 436 | dst->insns_ = code_item->insns_; |
| 437 | } else { |
| 438 | uint16_t num_args = dst->NumArgRegisters(); |
| 439 | if (!dst->IsStatic()) { |
| 440 | ++num_args; |
| 441 | } |
| 442 | dst->num_registers_ = dst->num_ins_ + num_args; |
| 443 | // TODO: native methods |
| 444 | } |
| 445 | } |
| 446 | |
Brian Carlstrom | 578bbdc | 2011-07-21 14:07:47 -0700 | [diff] [blame] | 447 | ClassLinker::ClassPathEntry ClassLinker::FindInBootClassPath(const StringPiece& descriptor) { |
| 448 | for (size_t i = 0; i != boot_class_path_.size(); ++i) { |
Brian Carlstrom | 4a96b60 | 2011-07-26 16:40:23 -0700 | [diff] [blame] | 449 | const DexFile* dex_file = boot_class_path_[i]; |
Brian Carlstrom | f615a61 | 2011-07-23 12:50:34 -0700 | [diff] [blame] | 450 | const DexFile::ClassDef* dex_class_def = dex_file->FindClassDef(descriptor); |
| 451 | if (dex_class_def != NULL) { |
| 452 | return ClassPathEntry(dex_file, dex_class_def); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 453 | } |
| 454 | } |
Brian Carlstrom | a080803 | 2011-07-18 00:39:23 -0700 | [diff] [blame] | 455 | return ClassPathEntry(NULL, NULL); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 456 | } |
| 457 | |
Brian Carlstrom | f615a61 | 2011-07-23 12:50:34 -0700 | [diff] [blame] | 458 | void ClassLinker::AppendToBootClassPath(DexFile* dex_file) { |
Carl Shapiro | 2ed144c | 2011-07-26 16:52:08 -0700 | [diff] [blame] | 459 | CHECK(dex_file != NULL); |
Brian Carlstrom | f615a61 | 2011-07-23 12:50:34 -0700 | [diff] [blame] | 460 | boot_class_path_.push_back(dex_file); |
| 461 | RegisterDexFile(dex_file); |
Brian Carlstrom | 578bbdc | 2011-07-21 14:07:47 -0700 | [diff] [blame] | 462 | } |
| 463 | |
Brian Carlstrom | 4a96b60 | 2011-07-26 16:40:23 -0700 | [diff] [blame] | 464 | void ClassLinker::RegisterDexFile(const DexFile* dex_file) { |
Carl Shapiro | 2ed144c | 2011-07-26 16:52:08 -0700 | [diff] [blame] | 465 | CHECK(dex_file != NULL); |
Brian Carlstrom | f615a61 | 2011-07-23 12:50:34 -0700 | [diff] [blame] | 466 | dex_files_.push_back(dex_file); |
Brian Carlstrom | 7e49dca | 2011-07-22 18:07:34 -0700 | [diff] [blame] | 467 | DexCache* dex_cache = AllocDexCache(); |
| 468 | CHECK(dex_cache != NULL); |
Brian Carlstrom | 4a96b60 | 2011-07-26 16:40:23 -0700 | [diff] [blame] | 469 | dex_cache->Init(AllocObjectArray<String>(dex_file->NumStringIds()), |
| 470 | AllocObjectArray<Class>(dex_file->NumTypeIds()), |
| 471 | AllocObjectArray<Method>(dex_file->NumMethodIds()), |
| 472 | AllocObjectArray<Field>(dex_file->NumFieldIds())); |
Brian Carlstrom | 7e49dca | 2011-07-22 18:07:34 -0700 | [diff] [blame] | 473 | dex_caches_.push_back(dex_cache); |
Brian Carlstrom | 578bbdc | 2011-07-21 14:07:47 -0700 | [diff] [blame] | 474 | } |
| 475 | |
Brian Carlstrom | f615a61 | 2011-07-23 12:50:34 -0700 | [diff] [blame] | 476 | const DexFile* ClassLinker::FindDexFile(const DexCache* dex_cache) const { |
Brian Carlstrom | 7e49dca | 2011-07-22 18:07:34 -0700 | [diff] [blame] | 477 | CHECK(dex_cache != NULL); |
| 478 | for (size_t i = 0; i != dex_caches_.size(); ++i) { |
| 479 | if (dex_caches_[i] == dex_cache) { |
Brian Carlstrom | f615a61 | 2011-07-23 12:50:34 -0700 | [diff] [blame] | 480 | return dex_files_[i]; |
Brian Carlstrom | 578bbdc | 2011-07-21 14:07:47 -0700 | [diff] [blame] | 481 | } |
| 482 | } |
Brian Carlstrom | f615a61 | 2011-07-23 12:50:34 -0700 | [diff] [blame] | 483 | CHECK(false) << "Could not find DexFile"; |
Brian Carlstrom | 578bbdc | 2011-07-21 14:07:47 -0700 | [diff] [blame] | 484 | return NULL; |
| 485 | } |
| 486 | |
Brian Carlstrom | f615a61 | 2011-07-23 12:50:34 -0700 | [diff] [blame] | 487 | DexCache* ClassLinker::FindDexCache(const DexFile* dex_file) const { |
| 488 | CHECK(dex_file != NULL); |
| 489 | for (size_t i = 0; i != dex_files_.size(); ++i) { |
| 490 | if (dex_files_[i] == dex_file) { |
Brian Carlstrom | 7e49dca | 2011-07-22 18:07:34 -0700 | [diff] [blame] | 491 | return dex_caches_[i]; |
Brian Carlstrom | 578bbdc | 2011-07-21 14:07:47 -0700 | [diff] [blame] | 492 | } |
| 493 | } |
Brian Carlstrom | 7e49dca | 2011-07-22 18:07:34 -0700 | [diff] [blame] | 494 | CHECK(false) << "Could not find DexCache"; |
Brian Carlstrom | 578bbdc | 2011-07-21 14:07:47 -0700 | [diff] [blame] | 495 | return NULL; |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 496 | } |
| 497 | |
Brian Carlstrom | a331b3c | 2011-07-18 17:47:56 -0700 | [diff] [blame] | 498 | Class* ClassLinker::CreatePrimitiveClass(const StringPiece& descriptor) { |
Brian Carlstrom | 75cb3b4 | 2011-07-28 02:13:36 -0700 | [diff] [blame^] | 499 | Class* klass = AllocClass(); |
Carl Shapiro | 565f507 | 2011-07-10 13:39:43 -0700 | [diff] [blame] | 500 | CHECK(klass != NULL); |
Brian Carlstrom | a080803 | 2011-07-18 00:39:23 -0700 | [diff] [blame] | 501 | klass->super_class_ = NULL; |
Carl Shapiro | 565f507 | 2011-07-10 13:39:43 -0700 | [diff] [blame] | 502 | klass->access_flags_ = kAccPublic | kAccFinal | kAccAbstract; |
| 503 | klass->descriptor_ = descriptor; |
Brian Carlstrom | a331b3c | 2011-07-18 17:47:56 -0700 | [diff] [blame] | 504 | klass->descriptor_alloc_ = NULL; |
Carl Shapiro | 565f507 | 2011-07-10 13:39:43 -0700 | [diff] [blame] | 505 | klass->status_ = Class::kStatusInitialized; |
Brian Carlstrom | a331b3c | 2011-07-18 17:47:56 -0700 | [diff] [blame] | 506 | bool success = InsertClass(klass); |
Brian Carlstrom | 75cb3b4 | 2011-07-28 02:13:36 -0700 | [diff] [blame^] | 507 | CHECK(success) << "CreatePrimitiveClass(" << descriptor << ") failed"; |
Carl Shapiro | 565f507 | 2011-07-10 13:39:43 -0700 | [diff] [blame] | 508 | return klass; |
| 509 | } |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 510 | |
Brian Carlstrom | be97785 | 2011-07-19 14:54:54 -0700 | [diff] [blame] | 511 | // Create an array class (i.e. the class object for the array, not the |
| 512 | // array itself). "descriptor" looks like "[C" or "[[[[B" or |
| 513 | // "[Ljava/lang/String;". |
| 514 | // |
| 515 | // If "descriptor" refers to an array of primitives, look up the |
| 516 | // primitive type's internally-generated class object. |
| 517 | // |
| 518 | // "loader" is the class loader of the class that's referring to us. It's |
| 519 | // used to ensure that we're looking for the element type in the right |
| 520 | // context. It does NOT become the class loader for the array class; that |
| 521 | // always comes from the base element class. |
| 522 | // |
| 523 | // Returns NULL with an exception raised on failure. |
Brian Carlstrom | 578bbdc | 2011-07-21 14:07:47 -0700 | [diff] [blame] | 524 | Class* ClassLinker::CreateArrayClass(const StringPiece& descriptor, |
| 525 | Object* class_loader, |
Brian Carlstrom | f615a61 | 2011-07-23 12:50:34 -0700 | [diff] [blame] | 526 | const DexFile* dex_file) |
Brian Carlstrom | a331b3c | 2011-07-18 17:47:56 -0700 | [diff] [blame] | 527 | { |
| 528 | CHECK(descriptor[0] == '['); |
Brian Carlstrom | a331b3c | 2011-07-18 17:47:56 -0700 | [diff] [blame] | 529 | |
Brian Carlstrom | be97785 | 2011-07-19 14:54:54 -0700 | [diff] [blame] | 530 | // Identify the underlying element class and the array dimension depth. |
Brian Carlstrom | a331b3c | 2011-07-18 17:47:56 -0700 | [diff] [blame] | 531 | Class* component_type_ = NULL; |
| 532 | int array_rank; |
| 533 | if (descriptor[1] == '[') { |
Brian Carlstrom | be97785 | 2011-07-19 14:54:54 -0700 | [diff] [blame] | 534 | // array of arrays; keep descriptor and grab stuff from parent |
Brian Carlstrom | f615a61 | 2011-07-23 12:50:34 -0700 | [diff] [blame] | 535 | Class* outer = FindClass(descriptor.substr(1), class_loader, dex_file); |
Brian Carlstrom | a331b3c | 2011-07-18 17:47:56 -0700 | [diff] [blame] | 536 | if (outer != NULL) { |
Brian Carlstrom | be97785 | 2011-07-19 14:54:54 -0700 | [diff] [blame] | 537 | // want the base class, not "outer", in our component_type_ |
Brian Carlstrom | a331b3c | 2011-07-18 17:47:56 -0700 | [diff] [blame] | 538 | component_type_ = outer->component_type_; |
| 539 | array_rank = outer->array_rank_ + 1; |
| 540 | } else { |
Brian Carlstrom | be97785 | 2011-07-19 14:54:54 -0700 | [diff] [blame] | 541 | DCHECK(component_type_ == NULL); // make sure we fail |
Brian Carlstrom | a331b3c | 2011-07-18 17:47:56 -0700 | [diff] [blame] | 542 | } |
| 543 | } else { |
| 544 | array_rank = 1; |
| 545 | if (descriptor[1] == 'L') { |
Brian Carlstrom | be97785 | 2011-07-19 14:54:54 -0700 | [diff] [blame] | 546 | // array of objects; strip off "[" and look up descriptor. |
Brian Carlstrom | a331b3c | 2011-07-18 17:47:56 -0700 | [diff] [blame] | 547 | const StringPiece subDescriptor = descriptor.substr(1); |
Brian Carlstrom | f615a61 | 2011-07-23 12:50:34 -0700 | [diff] [blame] | 548 | component_type_ = FindClass(subDescriptor, class_loader, dex_file); |
Brian Carlstrom | a331b3c | 2011-07-18 17:47:56 -0700 | [diff] [blame] | 549 | } else { |
Brian Carlstrom | be97785 | 2011-07-19 14:54:54 -0700 | [diff] [blame] | 550 | // array of a primitive type |
Brian Carlstrom | a331b3c | 2011-07-18 17:47:56 -0700 | [diff] [blame] | 551 | component_type_ = FindPrimitiveClass(descriptor[1]); |
| 552 | } |
| 553 | } |
| 554 | |
| 555 | if (component_type_ == NULL) { |
Brian Carlstrom | be97785 | 2011-07-19 14:54:54 -0700 | [diff] [blame] | 556 | // failed |
Brian Carlstrom | 8ecd08c | 2011-07-27 17:50:51 -0700 | [diff] [blame] | 557 | // DCHECK(Thread::Current()->IsExceptionPending()); // TODO |
Brian Carlstrom | a331b3c | 2011-07-18 17:47:56 -0700 | [diff] [blame] | 558 | return NULL; |
| 559 | } |
| 560 | |
Brian Carlstrom | be97785 | 2011-07-19 14:54:54 -0700 | [diff] [blame] | 561 | // See if the component type is already loaded. Array classes are |
| 562 | // always associated with the class loader of their underlying |
| 563 | // element type -- an array of Strings goes with the loader for |
| 564 | // java/lang/String -- so we need to look for it there. (The |
| 565 | // caller should have checked for the existence of the class |
| 566 | // before calling here, but they did so with *their* class loader, |
| 567 | // not the component type's loader.) |
| 568 | // |
| 569 | // If we find it, the caller adds "loader" to the class' initiating |
| 570 | // loader list, which should prevent us from going through this again. |
| 571 | // |
| 572 | // This call is unnecessary if "loader" and "component_type_->class_loader_" |
| 573 | // are the same, because our caller (FindClass) just did the |
| 574 | // lookup. (Even if we get this wrong we still have correct behavior, |
| 575 | // because we effectively do this lookup again when we add the new |
| 576 | // class to the hash table --- necessary because of possible races with |
| 577 | // other threads.) |
Brian Carlstrom | a331b3c | 2011-07-18 17:47:56 -0700 | [diff] [blame] | 578 | if (class_loader != component_type_->class_loader_) { |
| 579 | Class* new_class = LookupClass(descriptor, component_type_->class_loader_); |
| 580 | if (new_class != NULL) { |
| 581 | return new_class; |
| 582 | } |
| 583 | } |
| 584 | |
Brian Carlstrom | be97785 | 2011-07-19 14:54:54 -0700 | [diff] [blame] | 585 | // Fill out the fields in the Class. |
| 586 | // |
| 587 | // It is possible to execute some methods against arrays, because |
| 588 | // all arrays are subclasses of java_lang_Object_, so we need to set |
| 589 | // up a vtable. We can just point at the one in java_lang_Object_. |
| 590 | // |
| 591 | // Array classes are simple enough that we don't need to do a full |
| 592 | // link step. |
Brian Carlstrom | 913af1b | 2011-07-23 21:41:13 -0700 | [diff] [blame] | 593 | |
Brian Carlstrom | 75cb3b4 | 2011-07-28 02:13:36 -0700 | [diff] [blame^] | 594 | Class* new_class = NULL; |
| 595 | if (!init_done_ && descriptor == "[Ljava/lang/Object;") { |
| 596 | new_class = class_roots_->Get(kObjectArrayClass); |
| 597 | CHECK(new_class); |
| 598 | } |
| 599 | if (new_class == NULL) { |
| 600 | new_class = AllocClass(); |
Brian Carlstrom | 913af1b | 2011-07-23 21:41:13 -0700 | [diff] [blame] | 601 | if (new_class == NULL) { |
| 602 | return NULL; |
| 603 | } |
Brian Carlstrom | a331b3c | 2011-07-18 17:47:56 -0700 | [diff] [blame] | 604 | } |
| 605 | new_class->descriptor_alloc_ = new std::string(descriptor.data(), |
| 606 | descriptor.size()); |
| 607 | new_class->descriptor_.set(new_class->descriptor_alloc_->data(), |
| 608 | new_class->descriptor_alloc_->size()); |
Brian Carlstrom | 75cb3b4 | 2011-07-28 02:13:36 -0700 | [diff] [blame^] | 609 | Class* java_lang_Object = class_roots_->Get(kJavaLangObject); |
| 610 | new_class->super_class_ = java_lang_Object; |
| 611 | new_class->vtable_ = java_lang_Object->vtable_; |
Brian Carlstrom | a331b3c | 2011-07-18 17:47:56 -0700 | [diff] [blame] | 612 | new_class->primitive_type_ = Class::kPrimNot; |
| 613 | new_class->component_type_ = component_type_; |
| 614 | new_class->class_loader_ = component_type_->class_loader_; |
| 615 | new_class->array_rank_ = array_rank; |
| 616 | new_class->status_ = Class::kStatusInitialized; |
Brian Carlstrom | be97785 | 2011-07-19 14:54:54 -0700 | [diff] [blame] | 617 | // don't need to set new_class->object_size_ |
Brian Carlstrom | a331b3c | 2011-07-18 17:47:56 -0700 | [diff] [blame] | 618 | |
Brian Carlstrom | a331b3c | 2011-07-18 17:47:56 -0700 | [diff] [blame] | 619 | |
Brian Carlstrom | be97785 | 2011-07-19 14:54:54 -0700 | [diff] [blame] | 620 | // All arrays have java/lang/Cloneable and java/io/Serializable as |
| 621 | // interfaces. We need to set that up here, so that stuff like |
| 622 | // "instanceof" works right. |
| 623 | // |
Brian Carlstrom | 578bbdc | 2011-07-21 14:07:47 -0700 | [diff] [blame] | 624 | // Note: The GC could run during the call to FindSystemClass, |
Brian Carlstrom | be97785 | 2011-07-19 14:54:54 -0700 | [diff] [blame] | 625 | // so we need to make sure the class object is GC-valid while we're in |
| 626 | // there. Do this by clearing the interface list so the GC will just |
| 627 | // think that the entries are null. |
Brian Carlstrom | be97785 | 2011-07-19 14:54:54 -0700 | [diff] [blame] | 628 | |
Brian Carlstrom | 913af1b | 2011-07-23 21:41:13 -0700 | [diff] [blame] | 629 | |
| 630 | // Use the single, global copies of "interfaces" and "iftable" |
| 631 | // (remember not to free them for arrays). |
| 632 | DCHECK(array_interfaces_ != NULL); |
| 633 | new_class->interfaces_ = array_interfaces_; |
Brian Carlstrom | a331b3c | 2011-07-18 17:47:56 -0700 | [diff] [blame] | 634 | new_class->iftable_count_ = 2; |
Brian Carlstrom | 913af1b | 2011-07-23 21:41:13 -0700 | [diff] [blame] | 635 | DCHECK(array_iftable_ != NULL); |
| 636 | new_class->iftable_ = array_iftable_; |
Brian Carlstrom | a331b3c | 2011-07-18 17:47:56 -0700 | [diff] [blame] | 637 | |
Brian Carlstrom | be97785 | 2011-07-19 14:54:54 -0700 | [diff] [blame] | 638 | // Inherit access flags from the component type. Arrays can't be |
| 639 | // used as a superclass or interface, so we want to add "final" |
| 640 | // and remove "interface". |
| 641 | // |
| 642 | // Don't inherit any non-standard flags (e.g., kAccFinal) |
| 643 | // from component_type_. We assume that the array class does not |
| 644 | // override finalize(). |
Brian Carlstrom | a331b3c | 2011-07-18 17:47:56 -0700 | [diff] [blame] | 645 | new_class->access_flags_ = ((new_class->component_type_->access_flags_ & |
| 646 | ~kAccInterface) | kAccFinal) & kAccJavaFlagsMask; |
| 647 | |
| 648 | if (InsertClass(new_class)) { |
| 649 | return new_class; |
| 650 | } |
Brian Carlstrom | be97785 | 2011-07-19 14:54:54 -0700 | [diff] [blame] | 651 | // Another thread must have loaded the class after we |
| 652 | // started but before we finished. Abandon what we've |
| 653 | // done. |
| 654 | // |
| 655 | // (Yes, this happens.) |
Brian Carlstrom | a331b3c | 2011-07-18 17:47:56 -0700 | [diff] [blame] | 656 | |
Brian Carlstrom | be97785 | 2011-07-19 14:54:54 -0700 | [diff] [blame] | 657 | // Grab the winning class. |
Brian Carlstrom | a331b3c | 2011-07-18 17:47:56 -0700 | [diff] [blame] | 658 | Class* other_class = LookupClass(descriptor, component_type_->class_loader_); |
| 659 | DCHECK(other_class != NULL); |
| 660 | return other_class; |
| 661 | } |
| 662 | |
| 663 | Class* ClassLinker::FindPrimitiveClass(char type) { |
Carl Shapiro | 565f507 | 2011-07-10 13:39:43 -0700 | [diff] [blame] | 664 | switch (type) { |
Brian Carlstrom | a331b3c | 2011-07-18 17:47:56 -0700 | [diff] [blame] | 665 | case 'B': |
Brian Carlstrom | 75cb3b4 | 2011-07-28 02:13:36 -0700 | [diff] [blame^] | 666 | DCHECK(class_roots_->Get(kPrimitiveByte) != NULL); |
| 667 | return class_roots_->Get(kPrimitiveByte); |
Brian Carlstrom | a331b3c | 2011-07-18 17:47:56 -0700 | [diff] [blame] | 668 | case 'C': |
Brian Carlstrom | 75cb3b4 | 2011-07-28 02:13:36 -0700 | [diff] [blame^] | 669 | DCHECK(class_roots_->Get(kPrimitiveChar) != NULL); |
| 670 | return class_roots_->Get(kPrimitiveChar); |
Brian Carlstrom | a331b3c | 2011-07-18 17:47:56 -0700 | [diff] [blame] | 671 | case 'D': |
Brian Carlstrom | 75cb3b4 | 2011-07-28 02:13:36 -0700 | [diff] [blame^] | 672 | DCHECK(class_roots_->Get(kPrimitiveDouble) != NULL); |
| 673 | return class_roots_->Get(kPrimitiveDouble); |
Brian Carlstrom | a331b3c | 2011-07-18 17:47:56 -0700 | [diff] [blame] | 674 | case 'F': |
Brian Carlstrom | 75cb3b4 | 2011-07-28 02:13:36 -0700 | [diff] [blame^] | 675 | DCHECK(class_roots_->Get(kPrimitiveFloat) != NULL); |
| 676 | return class_roots_->Get(kPrimitiveFloat); |
Brian Carlstrom | a331b3c | 2011-07-18 17:47:56 -0700 | [diff] [blame] | 677 | case 'I': |
Brian Carlstrom | 75cb3b4 | 2011-07-28 02:13:36 -0700 | [diff] [blame^] | 678 | DCHECK(class_roots_->Get(kPrimitiveInt) != NULL); |
| 679 | return class_roots_->Get(kPrimitiveInt); |
Brian Carlstrom | a331b3c | 2011-07-18 17:47:56 -0700 | [diff] [blame] | 680 | case 'J': |
Brian Carlstrom | 75cb3b4 | 2011-07-28 02:13:36 -0700 | [diff] [blame^] | 681 | DCHECK(class_roots_->Get(kPrimitiveLong) != NULL); |
| 682 | return class_roots_->Get(kPrimitiveLong); |
Brian Carlstrom | a331b3c | 2011-07-18 17:47:56 -0700 | [diff] [blame] | 683 | case 'S': |
Brian Carlstrom | 75cb3b4 | 2011-07-28 02:13:36 -0700 | [diff] [blame^] | 684 | DCHECK(class_roots_->Get(kPrimitiveShort) != NULL); |
| 685 | return class_roots_->Get(kPrimitiveShort); |
Brian Carlstrom | a331b3c | 2011-07-18 17:47:56 -0700 | [diff] [blame] | 686 | case 'Z': |
Brian Carlstrom | 75cb3b4 | 2011-07-28 02:13:36 -0700 | [diff] [blame^] | 687 | DCHECK(class_roots_->Get(kPrimitiveBoolean) != NULL); |
| 688 | return class_roots_->Get(kPrimitiveBoolean); |
Brian Carlstrom | a331b3c | 2011-07-18 17:47:56 -0700 | [diff] [blame] | 689 | case 'V': |
Brian Carlstrom | 75cb3b4 | 2011-07-28 02:13:36 -0700 | [diff] [blame^] | 690 | DCHECK(class_roots_->Get(kPrimitiveVoid) != NULL); |
| 691 | return class_roots_->Get(kPrimitiveVoid); |
Brian Carlstrom | a331b3c | 2011-07-18 17:47:56 -0700 | [diff] [blame] | 692 | case 'L': |
| 693 | case '[': |
| 694 | LOG(ERROR) << "Not a primitive type " << static_cast<int>(type); |
Carl Shapiro | 565f507 | 2011-07-10 13:39:43 -0700 | [diff] [blame] | 695 | default: |
Brian Carlstrom | a331b3c | 2011-07-18 17:47:56 -0700 | [diff] [blame] | 696 | LOG(ERROR) << "Unknown primitive type " << static_cast<int>(type); |
Carl Shapiro | 565f507 | 2011-07-10 13:39:43 -0700 | [diff] [blame] | 697 | }; |
| 698 | return NULL; // Not reachable. |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 699 | } |
| 700 | |
| 701 | bool ClassLinker::InsertClass(Class* klass) { |
| 702 | // TODO: acquire classes_lock_ |
Brian Carlstrom | 6cc1845 | 2011-07-18 15:10:33 -0700 | [diff] [blame] | 703 | const StringPiece& key = klass->GetDescriptor(); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 704 | bool success = classes_.insert(std::make_pair(key, klass)).second; |
| 705 | // TODO: release classes_lock_ |
| 706 | return success; |
| 707 | } |
| 708 | |
Brian Carlstrom | 6cc1845 | 2011-07-18 15:10:33 -0700 | [diff] [blame] | 709 | Class* ClassLinker::LookupClass(const StringPiece& descriptor, Object* class_loader) { |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 710 | // TODO: acquire classes_lock_ |
| 711 | Table::iterator it = classes_.find(descriptor); |
| 712 | // TODO: release classes_lock_ |
| 713 | if (it == classes_.end()) { |
| 714 | return NULL; |
| 715 | } else { |
| 716 | return (*it).second; |
| 717 | } |
| 718 | } |
| 719 | |
| 720 | bool ClassLinker::InitializeClass(Class* klass) { |
| 721 | CHECK(klass->GetStatus() == Class::kStatusResolved || |
| 722 | klass->GetStatus() == Class::kStatusError); |
| 723 | |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 724 | Thread* self = Thread::Current(); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 725 | |
| 726 | { |
| 727 | ObjectLock lock(klass); |
| 728 | |
| 729 | if (klass->GetStatus() < Class::kStatusVerified) { |
| 730 | if (klass->IsErroneous()) { |
| 731 | LG << "re-initializing failed class"; // TODO: throw |
| 732 | return false; |
| 733 | } |
| 734 | |
| 735 | CHECK(klass->GetStatus() == Class::kStatusResolved); |
| 736 | |
| 737 | klass->status_ = Class::kStatusVerifying; |
| 738 | if (!DexVerify::VerifyClass(klass)) { |
| 739 | LG << "Verification failed"; // TODO: ThrowVerifyError |
| 740 | Object* exception = self->GetException(); |
Carl Shapiro | 69759ea | 2011-07-21 18:13:35 -0700 | [diff] [blame] | 741 | size_t field_offset = OFFSETOF_MEMBER(Class, verify_error_class_); |
| 742 | klass->SetFieldObject(field_offset, exception->GetClass()); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 743 | klass->SetStatus(Class::kStatusError); |
| 744 | return false; |
| 745 | } |
| 746 | |
| 747 | klass->SetStatus(Class::kStatusVerified); |
| 748 | } |
| 749 | |
| 750 | if (klass->status_ == Class::kStatusInitialized) { |
| 751 | return true; |
| 752 | } |
| 753 | |
| 754 | while (klass->status_ == Class::kStatusInitializing) { |
| 755 | // we caught somebody else in the act; was it us? |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 756 | if (klass->clinit_thread_id_ == self->GetId()) { |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 757 | LG << "recursive <clinit>"; |
| 758 | return true; |
| 759 | } |
| 760 | |
| 761 | CHECK(!self->IsExceptionPending()); |
| 762 | |
| 763 | lock.Wait(); // TODO: check for interruption |
| 764 | |
| 765 | // When we wake up, repeat the test for init-in-progress. If |
| 766 | // there's an exception pending (only possible if |
| 767 | // "interruptShouldThrow" was set), bail out. |
| 768 | if (self->IsExceptionPending()) { |
| 769 | CHECK(false); |
| 770 | LG << "Exception in initialization."; // TODO: ExceptionInInitializerError |
| 771 | klass->SetStatus(Class::kStatusError); |
| 772 | return false; |
| 773 | } |
| 774 | if (klass->GetStatus() == Class::kStatusInitializing) { |
| 775 | continue; |
| 776 | } |
Brian Carlstrom | a331b3c | 2011-07-18 17:47:56 -0700 | [diff] [blame] | 777 | DCHECK(klass->GetStatus() == Class::kStatusInitialized || |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 778 | klass->GetStatus() == Class::kStatusError); |
| 779 | if (klass->IsErroneous()) { |
Brian Carlstrom | be97785 | 2011-07-19 14:54:54 -0700 | [diff] [blame] | 780 | // The caller wants an exception, but it was thrown in a |
| 781 | // different thread. Synthesize one here. |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 782 | LG << "<clinit> failed"; // TODO: throw UnsatisfiedLinkError |
| 783 | return false; |
| 784 | } |
| 785 | return true; // otherwise, initialized |
| 786 | } |
| 787 | |
| 788 | // see if we failed previously |
| 789 | if (klass->IsErroneous()) { |
| 790 | // might be wise to unlock before throwing; depends on which class |
| 791 | // it is that we have locked |
| 792 | |
| 793 | // TODO: throwEarlierClassFailure(klass); |
| 794 | return false; |
| 795 | } |
| 796 | |
| 797 | if (!ValidateSuperClassDescriptors(klass)) { |
| 798 | klass->SetStatus(Class::kStatusError); |
| 799 | return false; |
| 800 | } |
| 801 | |
Brian Carlstrom | a331b3c | 2011-07-18 17:47:56 -0700 | [diff] [blame] | 802 | DCHECK(klass->status_ < Class::kStatusInitializing); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 803 | |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 804 | klass->clinit_thread_id_ = self->GetId(); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 805 | klass->status_ = Class::kStatusInitializing; |
| 806 | } |
| 807 | |
| 808 | if (!InitializeSuperClass(klass)) { |
| 809 | return false; |
| 810 | } |
| 811 | |
| 812 | InitializeStaticFields(klass); |
| 813 | |
| 814 | Method* clinit = klass->FindDirectMethodLocally("<clinit>", "()V"); |
| 815 | if (clinit != NULL) { |
| 816 | } else { |
| 817 | // JValue unused; |
| 818 | // TODO: dvmCallMethod(self, method, NULL, &unused); |
Carl Shapiro | 5fafe2b | 2011-07-09 15:34:41 -0700 | [diff] [blame] | 819 | //CHECK(!"unimplemented"); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 820 | } |
| 821 | |
| 822 | { |
| 823 | ObjectLock lock(klass); |
| 824 | |
| 825 | if (self->IsExceptionPending()) { |
| 826 | klass->SetStatus(Class::kStatusError); |
| 827 | } else { |
| 828 | klass->SetStatus(Class::kStatusInitialized); |
| 829 | } |
| 830 | lock.NotifyAll(); |
| 831 | } |
| 832 | |
| 833 | return true; |
| 834 | } |
| 835 | |
| 836 | bool ClassLinker::ValidateSuperClassDescriptors(const Class* klass) { |
| 837 | if (klass->IsInterface()) { |
| 838 | return true; |
| 839 | } |
| 840 | // begin with the methods local to the superclass |
| 841 | if (klass->HasSuperClass() && |
| 842 | klass->GetClassLoader() != klass->GetSuperClass()->GetClassLoader()) { |
| 843 | const Class* super = klass->GetSuperClass(); |
| 844 | for (int i = super->NumVirtualMethods() - 1; i >= 0; --i) { |
| 845 | const Method* method = klass->GetVirtualMethod(i); |
| 846 | if (method != super->GetVirtualMethod(i) && |
| 847 | !HasSameMethodDescriptorClasses(method, super, klass)) { |
| 848 | LG << "Classes resolve differently in superclass"; |
| 849 | return false; |
| 850 | } |
| 851 | } |
| 852 | } |
| 853 | for (size_t i = 0; i < klass->iftable_count_; ++i) { |
| 854 | const InterfaceEntry* iftable = &klass->iftable_[i]; |
| 855 | Class* interface = iftable->GetClass(); |
| 856 | if (klass->GetClassLoader() != interface->GetClassLoader()) { |
| 857 | for (size_t j = 0; j < interface->NumVirtualMethods(); ++j) { |
| 858 | uint32_t vtable_index = iftable->method_index_array_[j]; |
| 859 | const Method* method = klass->GetVirtualMethod(vtable_index); |
| 860 | if (!HasSameMethodDescriptorClasses(method, interface, |
| 861 | method->GetClass())) { |
| 862 | LG << "Classes resolve differently in interface"; // TODO: LinkageError |
| 863 | return false; |
| 864 | } |
| 865 | } |
| 866 | } |
| 867 | } |
| 868 | return true; |
| 869 | } |
| 870 | |
| 871 | bool ClassLinker::HasSameMethodDescriptorClasses(const Method* method, |
Brian Carlstrom | 934486c | 2011-07-12 23:42:50 -0700 | [diff] [blame] | 872 | const Class* klass1, |
| 873 | const Class* klass2) { |
Brian Carlstrom | f615a61 | 2011-07-23 12:50:34 -0700 | [diff] [blame] | 874 | const DexFile* dex_file = FindDexFile(method->GetClass()->GetDexCache()); |
| 875 | const DexFile::ProtoId& proto_id = dex_file->GetProtoId(method->proto_idx_); |
| 876 | DexFile::ParameterIterator *it; |
| 877 | for (it = dex_file->GetParameterIterator(proto_id); it->HasNext(); it->Next()) { |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 878 | const char* descriptor = it->GetDescriptor(); |
| 879 | if (descriptor == NULL) { |
| 880 | break; |
| 881 | } |
| 882 | if (descriptor[0] == 'L' || descriptor[0] == '[') { |
| 883 | // Found a non-primitive type. |
| 884 | if (!HasSameDescriptorClasses(descriptor, klass1, klass2)) { |
| 885 | return false; |
| 886 | } |
| 887 | } |
| 888 | } |
| 889 | // Check the return type |
Brian Carlstrom | f615a61 | 2011-07-23 12:50:34 -0700 | [diff] [blame] | 890 | const char* descriptor = dex_file->GetReturnTypeDescriptor(proto_id); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 891 | if (descriptor[0] == 'L' || descriptor[0] == '[') { |
| 892 | if (HasSameDescriptorClasses(descriptor, klass1, klass2)) { |
| 893 | return false; |
| 894 | } |
| 895 | } |
| 896 | return true; |
| 897 | } |
| 898 | |
| 899 | // Returns true if classes referenced by the descriptor are the |
| 900 | // same classes in klass1 as they are in klass2. |
| 901 | bool ClassLinker::HasSameDescriptorClasses(const char* descriptor, |
Brian Carlstrom | 934486c | 2011-07-12 23:42:50 -0700 | [diff] [blame] | 902 | const Class* klass1, |
| 903 | const Class* klass2) { |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 904 | CHECK(descriptor != NULL); |
| 905 | CHECK(klass1 != NULL); |
| 906 | CHECK(klass2 != NULL); |
| 907 | #if 0 |
Brian Carlstrom | 578bbdc | 2011-07-21 14:07:47 -0700 | [diff] [blame] | 908 | Class* found1 = FindClass(descriptor, klass1->GetClassLoader()); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 909 | // TODO: found1 == NULL |
Brian Carlstrom | 578bbdc | 2011-07-21 14:07:47 -0700 | [diff] [blame] | 910 | Class* found2 = FindClass(descriptor, klass2->GetClassLoader()); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 911 | // TODO: found2 == NULL |
| 912 | // TODO: lookup found1 in initiating loader list |
| 913 | if (found1 == NULL || found2 == NULL) { |
Carl Shapiro | b557353 | 2011-07-12 18:22:59 -0700 | [diff] [blame] | 914 | Thread::Current()->ClearException(); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 915 | if (found1 == found2) { |
| 916 | return true; |
| 917 | } else { |
| 918 | return false; |
| 919 | } |
| 920 | } |
| 921 | #endif |
| 922 | return true; |
| 923 | } |
| 924 | |
Brian Carlstrom | 578bbdc | 2011-07-21 14:07:47 -0700 | [diff] [blame] | 925 | bool ClassLinker::HasSameArgumentTypes(const Method* m1, const Method* m2) const { |
Brian Carlstrom | f615a61 | 2011-07-23 12:50:34 -0700 | [diff] [blame] | 926 | const DexFile* dex1 = FindDexFile(m1->GetClass()->GetDexCache()); |
| 927 | const DexFile* dex2 = FindDexFile(m2->GetClass()->GetDexCache()); |
| 928 | const DexFile::ProtoId& proto1 = dex1->GetProtoId(m1->proto_idx_); |
| 929 | const DexFile::ProtoId& proto2 = dex2->GetProtoId(m2->proto_idx_); |
Brian Carlstrom | 578bbdc | 2011-07-21 14:07:47 -0700 | [diff] [blame] | 930 | |
| 931 | // TODO: compare ProtoId objects for equality and exit early |
Brian Carlstrom | f615a61 | 2011-07-23 12:50:34 -0700 | [diff] [blame] | 932 | const DexFile::TypeList* type_list1 = dex1->GetProtoParameters(proto1); |
| 933 | const DexFile::TypeList* type_list2 = dex2->GetProtoParameters(proto2); |
Brian Carlstrom | 578bbdc | 2011-07-21 14:07:47 -0700 | [diff] [blame] | 934 | size_t arity1 = (type_list1 == NULL) ? 0 : type_list1->Size(); |
| 935 | size_t arity2 = (type_list2 == NULL) ? 0 : type_list2->Size(); |
| 936 | if (arity1 != arity2) { |
| 937 | return false; |
| 938 | } |
| 939 | |
| 940 | for (size_t i = 0; i < arity1; ++i) { |
| 941 | uint32_t type_idx1 = type_list1->GetTypeItem(i).type_idx_; |
| 942 | uint32_t type_idx2 = type_list2->GetTypeItem(i).type_idx_; |
Brian Carlstrom | f615a61 | 2011-07-23 12:50:34 -0700 | [diff] [blame] | 943 | const char* type1 = dex1->dexStringByTypeIdx(type_idx1); |
| 944 | const char* type2 = dex2->dexStringByTypeIdx(type_idx2); |
Brian Carlstrom | 578bbdc | 2011-07-21 14:07:47 -0700 | [diff] [blame] | 945 | if (strcmp(type1, type2) != 0) { |
| 946 | return false; |
| 947 | } |
| 948 | } |
| 949 | |
| 950 | return true; |
| 951 | } |
| 952 | |
| 953 | bool ClassLinker::HasSameReturnType(const Method* m1, const Method* m2) const { |
Brian Carlstrom | f615a61 | 2011-07-23 12:50:34 -0700 | [diff] [blame] | 954 | const DexFile* dex1 = FindDexFile(m1->GetClass()->GetDexCache()); |
| 955 | const DexFile* dex2 = FindDexFile(m2->GetClass()->GetDexCache()); |
| 956 | const DexFile::ProtoId& proto1 = dex1->GetProtoId(m1->proto_idx_); |
| 957 | const DexFile::ProtoId& proto2 = dex2->GetProtoId(m2->proto_idx_); |
| 958 | const char* type1 = dex1->dexStringByTypeIdx(proto1.return_type_idx_); |
| 959 | const char* type2 = dex2->dexStringByTypeIdx(proto2.return_type_idx_); |
Brian Carlstrom | 578bbdc | 2011-07-21 14:07:47 -0700 | [diff] [blame] | 960 | return (strcmp(type1, type2) == 0); |
| 961 | } |
| 962 | |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 963 | bool ClassLinker::InitializeSuperClass(Class* klass) { |
| 964 | CHECK(klass != NULL); |
| 965 | // TODO: assert klass lock is acquired |
| 966 | if (!klass->IsInterface() && klass->HasSuperClass()) { |
| 967 | Class* super_class = klass->GetSuperClass(); |
| 968 | if (super_class->GetStatus() != Class::kStatusInitialized) { |
| 969 | CHECK(!super_class->IsInterface()); |
| 970 | klass->MonitorExit(); |
| 971 | bool super_initialized = InitializeClass(super_class); |
| 972 | klass->MonitorEnter(); |
| 973 | // TODO: check for a pending exception |
| 974 | if (!super_initialized) { |
| 975 | klass->SetStatus(Class::kStatusError); |
| 976 | klass->NotifyAll(); |
| 977 | return false; |
| 978 | } |
| 979 | } |
| 980 | } |
| 981 | return true; |
| 982 | } |
| 983 | |
| 984 | void ClassLinker::InitializeStaticFields(Class* klass) { |
Carl Shapiro | 5fafe2b | 2011-07-09 15:34:41 -0700 | [diff] [blame] | 985 | size_t num_static_fields = klass->NumStaticFields(); |
| 986 | if (num_static_fields == 0) { |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 987 | return; |
Carl Shapiro | 5fafe2b | 2011-07-09 15:34:41 -0700 | [diff] [blame] | 988 | } |
Brian Carlstrom | f615a61 | 2011-07-23 12:50:34 -0700 | [diff] [blame] | 989 | DexCache* dex_cache = klass->GetDexCache(); |
| 990 | if (dex_cache == NULL) { |
Carl Shapiro | 5fafe2b | 2011-07-09 15:34:41 -0700 | [diff] [blame] | 991 | return; |
| 992 | } |
Brian Carlstrom | 6cc1845 | 2011-07-18 15:10:33 -0700 | [diff] [blame] | 993 | const StringPiece& descriptor = klass->GetDescriptor(); |
Brian Carlstrom | f615a61 | 2011-07-23 12:50:34 -0700 | [diff] [blame] | 994 | const DexFile* dex_file = FindDexFile(dex_cache); |
| 995 | const DexFile::ClassDef* dex_class_def = dex_file->FindClassDef(descriptor); |
| 996 | CHECK(dex_class_def != NULL); |
| 997 | const byte* addr = dex_file->GetEncodedArray(*dex_class_def); |
Carl Shapiro | 5fafe2b | 2011-07-09 15:34:41 -0700 | [diff] [blame] | 998 | size_t array_size = DecodeUnsignedLeb128(&addr); |
| 999 | for (size_t i = 0; i < array_size; ++i) { |
| 1000 | StaticField* field = klass->GetStaticField(i); |
| 1001 | JValue value; |
Brian Carlstrom | f615a61 | 2011-07-23 12:50:34 -0700 | [diff] [blame] | 1002 | DexFile::ValueType type = dex_file->ReadEncodedValue(&addr, &value); |
Carl Shapiro | 5fafe2b | 2011-07-09 15:34:41 -0700 | [diff] [blame] | 1003 | switch (type) { |
Brian Carlstrom | f615a61 | 2011-07-23 12:50:34 -0700 | [diff] [blame] | 1004 | case DexFile::kByte: |
Carl Shapiro | 5fafe2b | 2011-07-09 15:34:41 -0700 | [diff] [blame] | 1005 | field->SetByte(value.b); |
| 1006 | break; |
Brian Carlstrom | f615a61 | 2011-07-23 12:50:34 -0700 | [diff] [blame] | 1007 | case DexFile::kShort: |
Carl Shapiro | 5fafe2b | 2011-07-09 15:34:41 -0700 | [diff] [blame] | 1008 | field->SetShort(value.s); |
| 1009 | break; |
Brian Carlstrom | f615a61 | 2011-07-23 12:50:34 -0700 | [diff] [blame] | 1010 | case DexFile::kChar: |
Carl Shapiro | 5fafe2b | 2011-07-09 15:34:41 -0700 | [diff] [blame] | 1011 | field->SetChar(value.c); |
| 1012 | break; |
Brian Carlstrom | f615a61 | 2011-07-23 12:50:34 -0700 | [diff] [blame] | 1013 | case DexFile::kInt: |
Carl Shapiro | 5fafe2b | 2011-07-09 15:34:41 -0700 | [diff] [blame] | 1014 | field->SetInt(value.i); |
| 1015 | break; |
Brian Carlstrom | f615a61 | 2011-07-23 12:50:34 -0700 | [diff] [blame] | 1016 | case DexFile::kLong: |
Carl Shapiro | 5fafe2b | 2011-07-09 15:34:41 -0700 | [diff] [blame] | 1017 | field->SetLong(value.j); |
| 1018 | break; |
Brian Carlstrom | f615a61 | 2011-07-23 12:50:34 -0700 | [diff] [blame] | 1019 | case DexFile::kFloat: |
Carl Shapiro | 5fafe2b | 2011-07-09 15:34:41 -0700 | [diff] [blame] | 1020 | field->SetFloat(value.f); |
| 1021 | break; |
Brian Carlstrom | f615a61 | 2011-07-23 12:50:34 -0700 | [diff] [blame] | 1022 | case DexFile::kDouble: |
Carl Shapiro | 5fafe2b | 2011-07-09 15:34:41 -0700 | [diff] [blame] | 1023 | field->SetDouble(value.d); |
| 1024 | break; |
Brian Carlstrom | f615a61 | 2011-07-23 12:50:34 -0700 | [diff] [blame] | 1025 | case DexFile::kString: { |
Carl Shapiro | 5fafe2b | 2011-07-09 15:34:41 -0700 | [diff] [blame] | 1026 | uint32_t string_idx = value.i; |
| 1027 | String* resolved = ResolveString(klass, string_idx); |
| 1028 | field->SetObject(resolved); |
| 1029 | break; |
| 1030 | } |
Brian Carlstrom | f615a61 | 2011-07-23 12:50:34 -0700 | [diff] [blame] | 1031 | case DexFile::kBoolean: |
Carl Shapiro | 5fafe2b | 2011-07-09 15:34:41 -0700 | [diff] [blame] | 1032 | field->SetBoolean(value.z); |
| 1033 | break; |
Brian Carlstrom | f615a61 | 2011-07-23 12:50:34 -0700 | [diff] [blame] | 1034 | case DexFile::kNull: |
Carl Shapiro | 5fafe2b | 2011-07-09 15:34:41 -0700 | [diff] [blame] | 1035 | field->SetObject(value.l); |
| 1036 | break; |
| 1037 | default: |
Carl Shapiro | 606258b | 2011-07-09 16:09:09 -0700 | [diff] [blame] | 1038 | LOG(FATAL) << "Unknown type " << static_cast<int>(type); |
Carl Shapiro | 5fafe2b | 2011-07-09 15:34:41 -0700 | [diff] [blame] | 1039 | } |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1040 | } |
| 1041 | } |
| 1042 | |
Brian Carlstrom | f615a61 | 2011-07-23 12:50:34 -0700 | [diff] [blame] | 1043 | bool ClassLinker::LinkClass(Class* klass, const DexFile* dex_file) { |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1044 | CHECK(klass->status_ == Class::kStatusIdx || |
| 1045 | klass->status_ == Class::kStatusLoaded); |
| 1046 | if (klass->status_ == Class::kStatusIdx) { |
Brian Carlstrom | f615a61 | 2011-07-23 12:50:34 -0700 | [diff] [blame] | 1047 | if (!LinkInterfaces(klass, dex_file)) { |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1048 | return false; |
| 1049 | } |
| 1050 | } |
| 1051 | if (!LinkSuperClass(klass)) { |
| 1052 | return false; |
| 1053 | } |
| 1054 | if (!LinkMethods(klass)) { |
| 1055 | return false; |
| 1056 | } |
| 1057 | if (!LinkInstanceFields(klass)) { |
| 1058 | return false; |
| 1059 | } |
| 1060 | CreateReferenceOffsets(klass); |
| 1061 | CHECK_EQ(klass->status_, Class::kStatusLoaded); |
| 1062 | klass->status_ = Class::kStatusResolved; |
| 1063 | return true; |
| 1064 | } |
| 1065 | |
Brian Carlstrom | f615a61 | 2011-07-23 12:50:34 -0700 | [diff] [blame] | 1066 | bool ClassLinker::LinkInterfaces(Class* klass, const DexFile* dex_file) { |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1067 | // Mark the class as loaded. |
| 1068 | klass->status_ = Class::kStatusLoaded; |
Brian Carlstrom | f615a61 | 2011-07-23 12:50:34 -0700 | [diff] [blame] | 1069 | if (klass->super_class_idx_ != DexFile::kDexNoIndex) { |
| 1070 | Class* super_class = ResolveClass(klass, klass->super_class_idx_, dex_file); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1071 | if (super_class == NULL) { |
| 1072 | LG << "Failed to resolve superclass"; |
| 1073 | return false; |
| 1074 | } |
| 1075 | klass->super_class_ = super_class; // TODO: write barrier |
| 1076 | } |
Brian Carlstrom | 913af1b | 2011-07-23 21:41:13 -0700 | [diff] [blame] | 1077 | if (klass->NumInterfaces() > 0) { |
| 1078 | for (size_t i = 0; i < klass->NumInterfaces(); ++i) { |
| 1079 | uint32_t idx = klass->interfaces_idx_[i]; |
| 1080 | klass->SetInterface(i, ResolveClass(klass, idx, dex_file)); |
| 1081 | if (klass->GetInterface(i) == NULL) { |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1082 | LG << "Failed to resolve interface"; |
| 1083 | return false; |
| 1084 | } |
| 1085 | // Verify |
Brian Carlstrom | 913af1b | 2011-07-23 21:41:13 -0700 | [diff] [blame] | 1086 | if (!klass->CanAccess(klass->GetInterface(i))) { |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1087 | LG << "Inaccessible interface"; |
| 1088 | return false; |
| 1089 | } |
| 1090 | } |
| 1091 | } |
| 1092 | return true; |
| 1093 | } |
| 1094 | |
| 1095 | bool ClassLinker::LinkSuperClass(Class* klass) { |
| 1096 | CHECK(!klass->IsPrimitive()); |
| 1097 | const Class* super = klass->GetSuperClass(); |
| 1098 | if (klass->GetDescriptor() == "Ljava/lang/Object;") { |
| 1099 | if (super != NULL) { |
| 1100 | LG << "Superclass must not be defined"; // TODO: ClassFormatError |
| 1101 | return false; |
| 1102 | } |
| 1103 | // TODO: clear finalize attribute |
| 1104 | return true; |
| 1105 | } |
| 1106 | if (super == NULL) { |
| 1107 | LG << "No superclass defined"; // TODO: LinkageError |
| 1108 | return false; |
| 1109 | } |
| 1110 | // Verify |
| 1111 | if (super->IsFinal()) { |
| 1112 | LG << "Superclass is declared final"; // TODO: IncompatibleClassChangeError |
| 1113 | return false; |
| 1114 | } |
| 1115 | if (super->IsInterface()) { |
| 1116 | LG << "Superclass is an interface"; // TODO: IncompatibleClassChangeError |
| 1117 | return false; |
| 1118 | } |
| 1119 | if (!klass->CanAccess(super)) { |
| 1120 | LG << "Superclass is inaccessible"; // TODO: IllegalAccessError |
| 1121 | return false; |
| 1122 | } |
| 1123 | return true; |
| 1124 | } |
| 1125 | |
| 1126 | // Populate the class vtable and itable. |
| 1127 | bool ClassLinker::LinkMethods(Class* klass) { |
| 1128 | if (klass->IsInterface()) { |
| 1129 | // No vtable. |
| 1130 | size_t count = klass->NumVirtualMethods(); |
| 1131 | if (!IsUint(16, count)) { |
| 1132 | LG << "Too many methods on interface"; // TODO: VirtualMachineError |
| 1133 | return false; |
| 1134 | } |
Carl Shapiro | 565f507 | 2011-07-10 13:39:43 -0700 | [diff] [blame] | 1135 | for (size_t i = 0; i < count; ++i) { |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1136 | klass->GetVirtualMethod(i)->method_index_ = i; |
| 1137 | } |
| 1138 | } else { |
| 1139 | // Link virtual method tables |
| 1140 | LinkVirtualMethods(klass); |
| 1141 | |
| 1142 | // Link interface method tables |
| 1143 | LinkInterfaceMethods(klass); |
| 1144 | |
| 1145 | // Insert stubs. |
| 1146 | LinkAbstractMethods(klass); |
| 1147 | } |
| 1148 | return true; |
| 1149 | } |
| 1150 | |
| 1151 | bool ClassLinker::LinkVirtualMethods(Class* klass) { |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1152 | if (klass->HasSuperClass()) { |
Brian Carlstrom | a40f9bc | 2011-07-26 21:26:07 -0700 | [diff] [blame] | 1153 | uint32_t max_count = klass->NumVirtualMethods() + klass->GetSuperClass()->vtable_->GetLength(); |
Brian Carlstrom | 4a96b60 | 2011-07-26 16:40:23 -0700 | [diff] [blame] | 1154 | size_t actual_count = klass->GetSuperClass()->vtable_->GetLength(); |
| 1155 | CHECK_LE(actual_count, max_count); |
Brian Carlstrom | a40f9bc | 2011-07-26 21:26:07 -0700 | [diff] [blame] | 1156 | // TODO: do not assign to the vtable field until it is fully constructed. |
| 1157 | klass->vtable_ = klass->GetSuperClass()->vtable_->CopyOf(max_count); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1158 | // See if any of our virtual methods override the superclass. |
| 1159 | for (size_t i = 0; i < klass->NumVirtualMethods(); ++i) { |
| 1160 | Method* local_method = klass->GetVirtualMethod(i); |
| 1161 | size_t j = 0; |
Brian Carlstrom | 4a96b60 | 2011-07-26 16:40:23 -0700 | [diff] [blame] | 1162 | for (; j < actual_count; ++j) { |
| 1163 | Method* super_method = klass->vtable_->Get(j); |
Brian Carlstrom | 578bbdc | 2011-07-21 14:07:47 -0700 | [diff] [blame] | 1164 | if (HasSameNameAndPrototype(local_method, super_method)) { |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1165 | // Verify |
| 1166 | if (super_method->IsFinal()) { |
Brian Carlstrom | be97785 | 2011-07-19 14:54:54 -0700 | [diff] [blame] | 1167 | LG << "Method overrides final method"; // TODO: VirtualMachineError |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1168 | return false; |
| 1169 | } |
Brian Carlstrom | 4a96b60 | 2011-07-26 16:40:23 -0700 | [diff] [blame] | 1170 | klass->vtable_->Set(j, local_method); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1171 | local_method->method_index_ = j; |
| 1172 | break; |
| 1173 | } |
| 1174 | } |
Brian Carlstrom | 4a96b60 | 2011-07-26 16:40:23 -0700 | [diff] [blame] | 1175 | if (j == actual_count) { |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1176 | // Not overriding, append. |
Brian Carlstrom | 4a96b60 | 2011-07-26 16:40:23 -0700 | [diff] [blame] | 1177 | klass->vtable_->Set(actual_count, local_method); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1178 | local_method->method_index_ = actual_count; |
| 1179 | actual_count += 1; |
| 1180 | } |
| 1181 | } |
| 1182 | if (!IsUint(16, actual_count)) { |
| 1183 | LG << "Too many methods defined on class"; // TODO: VirtualMachineError |
| 1184 | return false; |
| 1185 | } |
| 1186 | CHECK_LE(actual_count, max_count); |
| 1187 | if (actual_count < max_count) { |
Brian Carlstrom | a40f9bc | 2011-07-26 21:26:07 -0700 | [diff] [blame] | 1188 | // TODO: do not assign to the vtable field until it is fully constructed. |
| 1189 | klass->vtable_ = klass->vtable_->CopyOf(actual_count); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1190 | } |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1191 | } else { |
| 1192 | CHECK(klass->GetDescriptor() == "Ljava/lang/Object;"); |
Brian Carlstrom | a40f9bc | 2011-07-26 21:26:07 -0700 | [diff] [blame] | 1193 | uint32_t num_virtual_methods = klass->NumVirtualMethods(); |
| 1194 | CHECK(klass->GetDescriptor() == "Ljava/lang/Object;"); |
| 1195 | if (!IsUint(16, num_virtual_methods)) { |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1196 | LG << "Too many methods"; // TODO: VirtualMachineError |
| 1197 | return false; |
| 1198 | } |
Brian Carlstrom | a40f9bc | 2011-07-26 21:26:07 -0700 | [diff] [blame] | 1199 | // TODO: do not assign to the vtable field until it is fully constructed. |
| 1200 | klass->vtable_ = AllocObjectArray<Method>(num_virtual_methods); |
| 1201 | for (size_t i = 0; i < num_virtual_methods; ++i) { |
Brian Carlstrom | 4a96b60 | 2011-07-26 16:40:23 -0700 | [diff] [blame] | 1202 | klass->vtable_->Set(i, klass->GetVirtualMethod(i)); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1203 | klass->GetVirtualMethod(i)->method_index_ = i & 0xFFFF; |
| 1204 | } |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1205 | } |
| 1206 | return true; |
| 1207 | } |
| 1208 | |
| 1209 | bool ClassLinker::LinkInterfaceMethods(Class* klass) { |
| 1210 | int pool_offset = 0; |
| 1211 | int pool_size = 0; |
| 1212 | int miranda_count = 0; |
| 1213 | int miranda_alloc = 0; |
| 1214 | size_t super_ifcount; |
| 1215 | if (klass->HasSuperClass()) { |
| 1216 | super_ifcount = klass->GetSuperClass()->iftable_count_; |
| 1217 | } else { |
| 1218 | super_ifcount = 0; |
| 1219 | } |
Brian Carlstrom | 913af1b | 2011-07-23 21:41:13 -0700 | [diff] [blame] | 1220 | size_t ifcount = super_ifcount; |
| 1221 | ifcount += klass->NumInterfaces(); |
| 1222 | for (size_t i = 0; i < klass->NumInterfaces(); i++) { |
| 1223 | ifcount += klass->GetInterface(i)->iftable_count_; |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1224 | } |
Brian Carlstrom | 913af1b | 2011-07-23 21:41:13 -0700 | [diff] [blame] | 1225 | if (ifcount == 0) { |
Brian Carlstrom | a331b3c | 2011-07-18 17:47:56 -0700 | [diff] [blame] | 1226 | DCHECK(klass->iftable_count_ == 0); |
| 1227 | DCHECK(klass->iftable_ == NULL); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1228 | return true; |
| 1229 | } |
Brian Carlstrom | 913af1b | 2011-07-23 21:41:13 -0700 | [diff] [blame] | 1230 | klass->iftable_ = new InterfaceEntry[ifcount * sizeof(InterfaceEntry)]; |
| 1231 | memset(klass->iftable_, 0x00, sizeof(InterfaceEntry) * ifcount); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1232 | if (super_ifcount != 0) { |
| 1233 | memcpy(klass->iftable_, klass->GetSuperClass()->iftable_, |
| 1234 | sizeof(InterfaceEntry) * super_ifcount); |
| 1235 | } |
| 1236 | // Flatten the interface inheritance hierarchy. |
| 1237 | size_t idx = super_ifcount; |
Brian Carlstrom | 913af1b | 2011-07-23 21:41:13 -0700 | [diff] [blame] | 1238 | for (size_t i = 0; i < klass->NumInterfaces(); i++) { |
| 1239 | Class* interf = klass->GetInterface(i); |
Brian Carlstrom | a331b3c | 2011-07-18 17:47:56 -0700 | [diff] [blame] | 1240 | DCHECK(interf != NULL); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1241 | if (!interf->IsInterface()) { |
| 1242 | LG << "Class implements non-interface class"; // TODO: IncompatibleClassChangeError |
| 1243 | return false; |
| 1244 | } |
| 1245 | klass->iftable_[idx++].SetClass(interf); |
| 1246 | for (size_t j = 0; j < interf->iftable_count_; j++) { |
| 1247 | klass->iftable_[idx++].SetClass(interf->iftable_[j].GetClass()); |
| 1248 | } |
| 1249 | } |
Brian Carlstrom | 913af1b | 2011-07-23 21:41:13 -0700 | [diff] [blame] | 1250 | CHECK_EQ(idx, ifcount); |
| 1251 | klass->iftable_count_ = ifcount; |
| 1252 | if (klass->IsInterface() || super_ifcount == ifcount) { |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1253 | return true; |
| 1254 | } |
Brian Carlstrom | 913af1b | 2011-07-23 21:41:13 -0700 | [diff] [blame] | 1255 | for (size_t i = super_ifcount; i < ifcount; i++) { |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1256 | pool_size += klass->iftable_[i].GetClass()->NumVirtualMethods(); |
| 1257 | } |
| 1258 | if (pool_size == 0) { |
| 1259 | return true; |
| 1260 | } |
| 1261 | klass->ifvi_pool_count_ = pool_size; |
| 1262 | klass->ifvi_pool_ = new uint32_t[pool_size]; |
| 1263 | std::vector<Method*> miranda_list; |
Brian Carlstrom | 913af1b | 2011-07-23 21:41:13 -0700 | [diff] [blame] | 1264 | for (size_t i = super_ifcount; i < ifcount; ++i) { |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1265 | klass->iftable_[i].method_index_array_ = klass->ifvi_pool_ + pool_offset; |
| 1266 | Class* interface = klass->iftable_[i].GetClass(); |
| 1267 | pool_offset += interface->NumVirtualMethods(); // end here |
| 1268 | for (size_t j = 0; j < interface->NumVirtualMethods(); ++j) { |
| 1269 | Method* interface_method = interface->GetVirtualMethod(j); |
| 1270 | int k; // must be signed |
Brian Carlstrom | 4a96b60 | 2011-07-26 16:40:23 -0700 | [diff] [blame] | 1271 | for (k = klass->vtable_->GetLength() - 1; k >= 0; --k) { |
| 1272 | if (HasSameNameAndPrototype(interface_method, klass->vtable_->Get(k))) { |
| 1273 | if (!klass->vtable_->Get(k)->IsPublic()) { |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1274 | LG << "Implementation not public"; |
| 1275 | return false; |
| 1276 | } |
| 1277 | klass->iftable_[i].method_index_array_[j] = k; |
| 1278 | break; |
| 1279 | } |
| 1280 | } |
| 1281 | if (k < 0) { |
| 1282 | if (miranda_count == miranda_alloc) { |
| 1283 | miranda_alloc += 8; |
| 1284 | if (miranda_list.empty()) { |
| 1285 | miranda_list.resize(miranda_alloc); |
| 1286 | } else { |
| 1287 | miranda_list.resize(miranda_alloc); |
| 1288 | } |
| 1289 | } |
| 1290 | int mir; |
| 1291 | for (mir = 0; mir < miranda_count; mir++) { |
Brian Carlstrom | 578bbdc | 2011-07-21 14:07:47 -0700 | [diff] [blame] | 1292 | if (HasSameNameAndPrototype(miranda_list[mir], interface_method)) { |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1293 | break; |
| 1294 | } |
| 1295 | } |
| 1296 | // point the interface table at a phantom slot index |
Brian Carlstrom | 4a96b60 | 2011-07-26 16:40:23 -0700 | [diff] [blame] | 1297 | klass->iftable_[i].method_index_array_[j] = klass->vtable_->GetLength() + mir; |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1298 | if (mir == miranda_count) { |
| 1299 | miranda_list[miranda_count++] = interface_method; |
| 1300 | } |
| 1301 | } |
| 1302 | } |
| 1303 | } |
| 1304 | if (miranda_count != 0) { |
Brian Carlstrom | 913af1b | 2011-07-23 21:41:13 -0700 | [diff] [blame] | 1305 | int old_method_count = klass->NumVirtualMethods(); |
| 1306 | int new_method_count = old_method_count + miranda_count; |
Brian Carlstrom | a40f9bc | 2011-07-26 21:26:07 -0700 | [diff] [blame] | 1307 | klass->virtual_methods_ = klass->virtual_methods_->CopyOf(new_method_count); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1308 | |
| 1309 | CHECK(klass->vtable_ != NULL); |
Brian Carlstrom | 4a96b60 | 2011-07-26 16:40:23 -0700 | [diff] [blame] | 1310 | int old_vtable_count = klass->vtable_->GetLength(); |
| 1311 | int new_vtable_count = old_vtable_count + miranda_count; |
Brian Carlstrom | a40f9bc | 2011-07-26 21:26:07 -0700 | [diff] [blame] | 1312 | // TODO: do not assign to the vtable field until it is fully constructed. |
| 1313 | klass->vtable_ = klass->vtable_->CopyOf(new_vtable_count); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1314 | |
Brian Carlstrom | a7f4f48 | 2011-07-17 17:01:34 -0700 | [diff] [blame] | 1315 | for (int i = 0; i < miranda_count; i++) { |
Brian Carlstrom | a080803 | 2011-07-18 00:39:23 -0700 | [diff] [blame] | 1316 | Method* meth = AllocMethod(); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1317 | memcpy(meth, miranda_list[i], sizeof(Method)); |
| 1318 | meth->klass_ = klass; |
| 1319 | meth->access_flags_ |= kAccMiranda; |
Brian Carlstrom | 913af1b | 2011-07-23 21:41:13 -0700 | [diff] [blame] | 1320 | meth->method_index_ = 0xFFFF & (old_vtable_count + i); |
| 1321 | klass->SetVirtualMethod(old_method_count + i, meth); |
Brian Carlstrom | 4a96b60 | 2011-07-26 16:40:23 -0700 | [diff] [blame] | 1322 | klass->vtable_->Set(old_vtable_count + i, meth); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1323 | } |
| 1324 | } |
| 1325 | return true; |
| 1326 | } |
| 1327 | |
| 1328 | void ClassLinker::LinkAbstractMethods(Class* klass) { |
| 1329 | for (size_t i = 0; i < klass->NumVirtualMethods(); ++i) { |
| 1330 | Method* method = klass->GetVirtualMethod(i); |
| 1331 | if (method->IsAbstract()) { |
| 1332 | method->insns_ = reinterpret_cast<uint16_t*>(0xFFFFFFFF); // TODO: AbstractMethodError |
| 1333 | } |
| 1334 | } |
| 1335 | } |
| 1336 | |
| 1337 | bool ClassLinker::LinkInstanceFields(Class* klass) { |
Brian Carlstrom | a080803 | 2011-07-18 00:39:23 -0700 | [diff] [blame] | 1338 | int field_offset; |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1339 | if (klass->GetSuperClass() != NULL) { |
Brian Carlstrom | a080803 | 2011-07-18 00:39:23 -0700 | [diff] [blame] | 1340 | field_offset = klass->GetSuperClass()->object_size_; |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1341 | } else { |
Brian Carlstrom | a080803 | 2011-07-18 00:39:23 -0700 | [diff] [blame] | 1342 | field_offset = OFFSETOF_MEMBER(DataObject, fields_); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1343 | } |
| 1344 | // Move references to the front. |
Carl Shapiro | 69759ea | 2011-07-21 18:13:35 -0700 | [diff] [blame] | 1345 | klass->num_reference_instance_fields_ = 0; |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1346 | size_t i = 0; |
Brian Carlstrom | a7f4f48 | 2011-07-17 17:01:34 -0700 | [diff] [blame] | 1347 | for ( ; i < klass->NumInstanceFields(); i++) { |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1348 | InstanceField* pField = klass->GetInstanceField(i); |
| 1349 | char c = pField->GetType(); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1350 | if (c != '[' && c != 'L') { |
Brian Carlstrom | a7f4f48 | 2011-07-17 17:01:34 -0700 | [diff] [blame] | 1351 | for (size_t j = klass->NumInstanceFields() - 1; j > i; j--) { |
| 1352 | InstanceField* refField = klass->GetInstanceField(j); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1353 | char rc = refField->GetType(); |
| 1354 | if (rc == '[' || rc == 'L') { |
Brian Carlstrom | a7f4f48 | 2011-07-17 17:01:34 -0700 | [diff] [blame] | 1355 | klass->SetInstanceField(i, refField); |
| 1356 | klass->SetInstanceField(j, pField); |
| 1357 | pField = refField; |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1358 | c = rc; |
Carl Shapiro | 69759ea | 2011-07-21 18:13:35 -0700 | [diff] [blame] | 1359 | klass->num_reference_instance_fields_++; |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1360 | break; |
| 1361 | } |
| 1362 | } |
| 1363 | } else { |
Carl Shapiro | 69759ea | 2011-07-21 18:13:35 -0700 | [diff] [blame] | 1364 | klass->num_reference_instance_fields_++; |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1365 | } |
| 1366 | if (c != '[' && c != 'L') { |
| 1367 | break; |
| 1368 | } |
Brian Carlstrom | a080803 | 2011-07-18 00:39:23 -0700 | [diff] [blame] | 1369 | pField->SetOffset(field_offset); |
| 1370 | field_offset += sizeof(uint32_t); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1371 | } |
| 1372 | |
| 1373 | // Now we want to pack all of the double-wide fields together. If |
| 1374 | // we're not aligned, though, we want to shuffle one 32-bit field |
| 1375 | // into place. If we can't find one, we'll have to pad it. |
Brian Carlstrom | a080803 | 2011-07-18 00:39:23 -0700 | [diff] [blame] | 1376 | if (i != klass->NumInstanceFields() && (field_offset & 0x04) != 0) { |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1377 | InstanceField* pField = klass->GetInstanceField(i); |
| 1378 | char c = pField->GetType(); |
| 1379 | |
| 1380 | if (c != 'J' && c != 'D') { |
| 1381 | // The field that comes next is 32-bit, so just advance past it. |
Brian Carlstrom | be97785 | 2011-07-19 14:54:54 -0700 | [diff] [blame] | 1382 | DCHECK(c != '['); |
| 1383 | DCHECK(c != 'L'); |
Brian Carlstrom | a080803 | 2011-07-18 00:39:23 -0700 | [diff] [blame] | 1384 | pField->SetOffset(field_offset); |
| 1385 | field_offset += sizeof(uint32_t); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1386 | i++; |
| 1387 | } else { |
| 1388 | // Next field is 64-bit, so search for a 32-bit field we can |
| 1389 | // swap into it. |
| 1390 | bool found = false; |
Brian Carlstrom | a7f4f48 | 2011-07-17 17:01:34 -0700 | [diff] [blame] | 1391 | for (size_t j = klass->NumInstanceFields() - 1; j > i; j--) { |
| 1392 | InstanceField* singleField = klass->GetInstanceField(j); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1393 | char rc = singleField->GetType(); |
| 1394 | if (rc != 'J' && rc != 'D') { |
Brian Carlstrom | a7f4f48 | 2011-07-17 17:01:34 -0700 | [diff] [blame] | 1395 | klass->SetInstanceField(i, singleField); |
| 1396 | klass->SetInstanceField(j, pField); |
| 1397 | pField = singleField; |
Brian Carlstrom | a080803 | 2011-07-18 00:39:23 -0700 | [diff] [blame] | 1398 | pField->SetOffset(field_offset); |
| 1399 | field_offset += sizeof(uint32_t); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1400 | found = true; |
| 1401 | i++; |
| 1402 | break; |
| 1403 | } |
| 1404 | } |
| 1405 | if (!found) { |
Brian Carlstrom | a080803 | 2011-07-18 00:39:23 -0700 | [diff] [blame] | 1406 | field_offset += sizeof(uint32_t); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1407 | } |
| 1408 | } |
| 1409 | } |
| 1410 | |
| 1411 | // Alignment is good, shuffle any double-wide fields forward, and |
| 1412 | // finish assigning field offsets to all fields. |
Brian Carlstrom | a331b3c | 2011-07-18 17:47:56 -0700 | [diff] [blame] | 1413 | DCHECK(i == klass->NumInstanceFields() || (field_offset & 0x04) == 0); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1414 | for ( ; i < klass->NumInstanceFields(); i++) { |
| 1415 | InstanceField* pField = klass->GetInstanceField(i); |
| 1416 | char c = pField->GetType(); |
| 1417 | if (c != 'D' && c != 'J') { |
Brian Carlstrom | a7f4f48 | 2011-07-17 17:01:34 -0700 | [diff] [blame] | 1418 | for (size_t j = klass->NumInstanceFields() - 1; j > i; j--) { |
| 1419 | InstanceField* doubleField = klass->GetInstanceField(j); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1420 | char rc = doubleField->GetType(); |
| 1421 | if (rc == 'D' || rc == 'J') { |
Brian Carlstrom | a7f4f48 | 2011-07-17 17:01:34 -0700 | [diff] [blame] | 1422 | klass->SetInstanceField(i, doubleField); |
| 1423 | klass->SetInstanceField(j, pField); |
| 1424 | pField = doubleField; |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1425 | c = rc; |
| 1426 | break; |
| 1427 | } |
| 1428 | } |
| 1429 | } else { |
| 1430 | // This is a double-wide field, leave it be. |
| 1431 | } |
| 1432 | |
Brian Carlstrom | a080803 | 2011-07-18 00:39:23 -0700 | [diff] [blame] | 1433 | pField->SetOffset(field_offset); |
| 1434 | field_offset += sizeof(uint32_t); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1435 | if (c == 'J' || c == 'D') |
Brian Carlstrom | a080803 | 2011-07-18 00:39:23 -0700 | [diff] [blame] | 1436 | field_offset += sizeof(uint32_t); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1437 | } |
| 1438 | |
| 1439 | #ifndef NDEBUG |
Brian Carlstrom | be97785 | 2011-07-19 14:54:54 -0700 | [diff] [blame] | 1440 | // Make sure that all reference fields appear before |
| 1441 | // non-reference fields, and all double-wide fields are aligned. |
| 1442 | bool seen_non_ref = false; |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1443 | for (i = 0; i < klass->NumInstanceFields(); i++) { |
Brian Carlstrom | be97785 | 2011-07-19 14:54:54 -0700 | [diff] [blame] | 1444 | InstanceField *pField = klass->GetInstanceField(i); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1445 | char c = pField->GetType(); |
| 1446 | |
| 1447 | if (c == 'D' || c == 'J') { |
Brian Carlstrom | be97785 | 2011-07-19 14:54:54 -0700 | [diff] [blame] | 1448 | DCHECK_EQ(0U, pField->GetOffset() & 0x07); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1449 | } |
| 1450 | |
| 1451 | if (c != '[' && c != 'L') { |
Brian Carlstrom | be97785 | 2011-07-19 14:54:54 -0700 | [diff] [blame] | 1452 | if (!seen_non_ref) { |
| 1453 | seen_non_ref = true; |
Brian Carlstrom | 07d579f | 2011-07-27 13:31:51 -0700 | [diff] [blame] | 1454 | DCHECK_EQ(klass->NumReferenceInstanceFields(), i); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1455 | } |
Brian Carlstrom | be97785 | 2011-07-19 14:54:54 -0700 | [diff] [blame] | 1456 | } else { |
| 1457 | DCHECK(!seen_non_ref); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1458 | } |
| 1459 | } |
Brian Carlstrom | be97785 | 2011-07-19 14:54:54 -0700 | [diff] [blame] | 1460 | if (!seen_non_ref) { |
Brian Carlstrom | 07d579f | 2011-07-27 13:31:51 -0700 | [diff] [blame] | 1461 | DCHECK_EQ(klass->NumInstanceFields(), klass->NumReferenceInstanceFields()); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1462 | } |
| 1463 | #endif |
Brian Carlstrom | 75cb3b4 | 2011-07-28 02:13:36 -0700 | [diff] [blame^] | 1464 | klass->object_size_ = field_offset; |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1465 | return true; |
| 1466 | } |
| 1467 | |
| 1468 | // Set the bitmap of reference offsets, refOffsets, from the ifields |
| 1469 | // list. |
| 1470 | void ClassLinker::CreateReferenceOffsets(Class* klass) { |
| 1471 | uint32_t reference_offsets = 0; |
| 1472 | if (klass->HasSuperClass()) { |
| 1473 | reference_offsets = klass->GetSuperClass()->GetReferenceOffsets(); |
| 1474 | } |
| 1475 | // If our superclass overflowed, we don't stand a chance. |
| 1476 | if (reference_offsets != CLASS_WALK_SUPER) { |
| 1477 | // All of the fields that contain object references are guaranteed |
| 1478 | // to be at the beginning of the ifields list. |
| 1479 | for (size_t i = 0; i < klass->NumReferenceInstanceFields(); ++i) { |
| 1480 | // Note that, per the comment on struct InstField, f->byteOffset |
| 1481 | // is the offset from the beginning of obj, not the offset into |
| 1482 | // obj->instanceData. |
| 1483 | const InstanceField* field = klass->GetInstanceField(i); |
| 1484 | size_t byte_offset = field->GetOffset(); |
| 1485 | CHECK_GE(byte_offset, CLASS_SMALLEST_OFFSET); |
Elliott Hughes | 1f359b0 | 2011-07-17 14:27:17 -0700 | [diff] [blame] | 1486 | CHECK_EQ(byte_offset & (CLASS_OFFSET_ALIGNMENT - 1), 0U); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1487 | if (CLASS_CAN_ENCODE_OFFSET(byte_offset)) { |
| 1488 | uint32_t new_bit = CLASS_BIT_FROM_OFFSET(byte_offset); |
Elliott Hughes | 1f359b0 | 2011-07-17 14:27:17 -0700 | [diff] [blame] | 1489 | CHECK_NE(new_bit, 0U); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1490 | reference_offsets |= new_bit; |
| 1491 | } else { |
| 1492 | reference_offsets = CLASS_WALK_SUPER; |
| 1493 | break; |
| 1494 | } |
| 1495 | } |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1496 | } |
Brian Carlstrom | ae3ac01 | 2011-07-27 01:30:28 -0700 | [diff] [blame] | 1497 | klass->SetReferenceOffsets(reference_offsets); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1498 | } |
| 1499 | |
Brian Carlstrom | 578bbdc | 2011-07-21 14:07:47 -0700 | [diff] [blame] | 1500 | Class* ClassLinker::ResolveClass(const Class* referrer, |
| 1501 | uint32_t class_idx, |
Brian Carlstrom | f615a61 | 2011-07-23 12:50:34 -0700 | [diff] [blame] | 1502 | const DexFile* dex_file) { |
Brian Carlstrom | 7e49dca | 2011-07-22 18:07:34 -0700 | [diff] [blame] | 1503 | DexCache* dex_cache = referrer->GetDexCache(); |
| 1504 | Class* resolved = dex_cache->GetResolvedClass(class_idx); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1505 | if (resolved != NULL) { |
| 1506 | return resolved; |
| 1507 | } |
Brian Carlstrom | f615a61 | 2011-07-23 12:50:34 -0700 | [diff] [blame] | 1508 | const char* descriptor = dex_file->dexStringByTypeIdx(class_idx); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1509 | if (descriptor[0] != '\0' && descriptor[1] == '\0') { |
Brian Carlstrom | a331b3c | 2011-07-18 17:47:56 -0700 | [diff] [blame] | 1510 | resolved = FindPrimitiveClass(descriptor[0]); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1511 | } else { |
Brian Carlstrom | f615a61 | 2011-07-23 12:50:34 -0700 | [diff] [blame] | 1512 | resolved = FindClass(descriptor, referrer->GetClassLoader(), dex_file); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1513 | } |
| 1514 | if (resolved != NULL) { |
| 1515 | Class* check = resolved->IsArray() ? resolved->component_type_ : resolved; |
Brian Carlstrom | 7e49dca | 2011-07-22 18:07:34 -0700 | [diff] [blame] | 1516 | if (referrer->GetDexCache() != check->GetDexCache()) { |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1517 | if (check->GetClassLoader() != NULL) { |
| 1518 | LG << "Class resolved by unexpected DEX"; // TODO: IllegalAccessError |
| 1519 | return NULL; |
| 1520 | } |
| 1521 | } |
Brian Carlstrom | 7e49dca | 2011-07-22 18:07:34 -0700 | [diff] [blame] | 1522 | dex_cache->SetResolvedClass(class_idx, resolved); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1523 | } else { |
Brian Carlstrom | a331b3c | 2011-07-18 17:47:56 -0700 | [diff] [blame] | 1524 | DCHECK(Thread::Current()->IsExceptionPending()); |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1525 | } |
| 1526 | return resolved; |
| 1527 | } |
| 1528 | |
| 1529 | Method* ResolveMethod(const Class* referrer, uint32_t method_idx, |
| 1530 | /*MethodType*/ int method_type) { |
| 1531 | CHECK(false); |
| 1532 | return NULL; |
| 1533 | } |
| 1534 | |
Carl Shapiro | 69759ea | 2011-07-21 18:13:35 -0700 | [diff] [blame] | 1535 | String* ClassLinker::ResolveString(const Class* referring, |
| 1536 | uint32_t string_idx) { |
Brian Carlstrom | f615a61 | 2011-07-23 12:50:34 -0700 | [diff] [blame] | 1537 | const DexFile* dex_file = FindDexFile(referring->GetDexCache()); |
| 1538 | const DexFile::StringId& string_id = dex_file->GetStringId(string_idx); |
Brian Carlstrom | 0b138b2 | 2011-07-27 15:19:17 -0700 | [diff] [blame] | 1539 | int32_t utf16_length = dex_file->GetStringLength(string_id); |
| 1540 | const char* utf8_data = dex_file->GetStringData(string_id); |
| 1541 | String* new_string = AllocStringFromModifiedUtf8(utf16_length, utf8_data); |
Carl Shapiro | 5fafe2b | 2011-07-09 15:34:41 -0700 | [diff] [blame] | 1542 | // TODO: intern the new string |
Brian Carlstrom | 7e49dca | 2011-07-22 18:07:34 -0700 | [diff] [blame] | 1543 | referring->GetDexCache()->SetResolvedString(string_idx, new_string); |
Carl Shapiro | 5fafe2b | 2011-07-09 15:34:41 -0700 | [diff] [blame] | 1544 | return new_string; |
| 1545 | } |
| 1546 | |
Carl Shapiro | 0e5d75d | 2011-07-06 18:28:37 -0700 | [diff] [blame] | 1547 | } // namespace art |