Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2012 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame^] | 17 | #include "reg_type_cache-inl.h" |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 18 | |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame^] | 19 | #include "base/casts.h" |
Ian Rogers | 4f6ad8a | 2013-03-18 15:27:28 -0700 | [diff] [blame] | 20 | #include "dex_file-inl.h" |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 21 | #include "mirror/class-inl.h" |
| 22 | #include "mirror/object-inl.h" |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 23 | #include "object_utils.h" |
| 24 | |
| 25 | namespace art { |
| 26 | namespace verifier { |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame^] | 27 | bool RegTypeCache::primitive_initialized_ = false; |
| 28 | uint16_t RegTypeCache::primitive_start_ = 0; |
| 29 | uint16_t RegTypeCache::primitive_count_ = 0; |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 30 | |
Ian Rogers | b490357 | 2012-10-11 11:52:56 -0700 | [diff] [blame] | 31 | static bool MatchingPrecisionForClass(RegType* entry, bool precise) |
| 32 | SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| 33 | return (entry->IsPreciseReference() == precise) || (entry->GetClass()->IsFinal() && !precise); |
| 34 | } |
| 35 | |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame^] | 36 | void RegTypeCache::FillPrimitiveTypes() { |
| 37 | entries_.push_back(UndefinedType::GetInstance()); |
| 38 | entries_.push_back(ConflictType::GetInstance()); |
| 39 | entries_.push_back(BooleanType::GetInstance()); |
| 40 | entries_.push_back(ByteType::GetInstance()); |
| 41 | entries_.push_back(ShortType::GetInstance()); |
| 42 | entries_.push_back(CharType::GetInstance()); |
| 43 | entries_.push_back(IntegerType::GetInstance()); |
| 44 | entries_.push_back(LongLoType::GetInstance()); |
| 45 | entries_.push_back(LongHiType::GetInstance()); |
| 46 | entries_.push_back(FloatType::GetInstance()); |
| 47 | entries_.push_back(DoubleLoType::GetInstance()); |
| 48 | entries_.push_back(DoubleHiType::GetInstance()); |
| 49 | DCHECK_EQ(entries_.size(), primitive_count_); |
| 50 | } |
| 51 | |
| 52 | const RegType& RegTypeCache::FromDescriptor(mirror::ClassLoader* loader, const char* descriptor, bool precise) { |
| 53 | CHECK(RegTypeCache::primitive_initialized_); |
| 54 | if (std::string(descriptor).length() == 1) { |
| 55 | switch (descriptor[0]) { |
| 56 | case 'Z': |
| 57 | return Boolean(); |
| 58 | case 'B': |
| 59 | return Byte(); |
| 60 | case 'S': |
| 61 | return Short(); |
| 62 | case 'C': |
| 63 | return Char(); |
| 64 | case 'I': |
| 65 | return Integer(); |
| 66 | case 'J': |
| 67 | return LongLo(); |
| 68 | case 'F': |
| 69 | return Float(); |
| 70 | case 'D': |
| 71 | return DoubleLo(); |
| 72 | case 'V': // For void types, conflict types. |
| 73 | default: |
Ian Rogers | ad0b3a3 | 2012-04-16 14:50:24 -0700 | [diff] [blame] | 74 | return Conflict(); |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 75 | } |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame^] | 76 | } else if (descriptor[0] == 'L' || descriptor[0] == '[') { |
| 77 | return From(loader, descriptor, precise); |
| 78 | } else { |
| 79 | return Conflict(); |
| 80 | } |
| 81 | }; |
| 82 | |
| 83 | const art::verifier::RegType& RegTypeCache::GetFromId(uint16_t id) const { |
| 84 | DCHECK_LT(id, entries_.size()); |
| 85 | RegType* result = entries_[id]; |
| 86 | DCHECK(result != NULL); |
| 87 | return *result; |
| 88 | } |
| 89 | |
| 90 | const RegType& RegTypeCache::RegTypeFromPrimitiveType( |
| 91 | Primitive::Type prim_type) const { |
| 92 | CHECK(RegTypeCache::primitive_initialized_); |
| 93 | switch (prim_type) { |
| 94 | case Primitive::kPrimBoolean: |
| 95 | return *BooleanType::GetInstance(); |
| 96 | case Primitive::kPrimByte: |
| 97 | return *ByteType::GetInstance(); |
| 98 | case Primitive::kPrimShort: |
| 99 | return *ShortType::GetInstance(); |
| 100 | case Primitive::kPrimChar: |
| 101 | return *CharType::GetInstance(); |
| 102 | case Primitive::kPrimInt: |
| 103 | return *IntegerType::GetInstance(); |
| 104 | case Primitive::kPrimLong: |
| 105 | return *LongLoType::GetInstance(); |
| 106 | case Primitive::kPrimFloat: |
| 107 | return *FloatType::GetInstance(); |
| 108 | case Primitive::kPrimDouble: |
| 109 | return *DoubleLoType::GetInstance(); |
| 110 | case Primitive::kPrimVoid: |
| 111 | default: |
| 112 | return *ConflictType::GetInstance(); |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 113 | } |
| 114 | } |
| 115 | |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame^] | 116 | bool RegTypeCache::MatchDescriptor(size_t idx, std::string& descriptor, bool precise) { |
| 117 | ClassHelper kh; |
| 118 | RegType* cur_entry = entries_[idx]; |
| 119 | // Check if we have matching descriptors and precision |
| 120 | // in cases where the descriptor available |
| 121 | if (cur_entry->descriptor_ != "" && |
| 122 | MatchingPrecisionForClass(cur_entry, precise) && |
| 123 | descriptor == cur_entry->descriptor_) { |
| 124 | return true; |
| 125 | } |
| 126 | // check resolved and unresolved references, ignore uninitialized references |
| 127 | if (cur_entry->HasClass()) { |
| 128 | kh.ChangeClass(cur_entry->GetClass()); |
| 129 | // So we might have cases where we have the class but not the descriptor |
| 130 | // for that class we need the class helper to get the descriptor |
| 131 | // and match it with the one we are given. |
| 132 | if (MatchingPrecisionForClass(cur_entry, precise) && |
| 133 | (strcmp(descriptor.c_str(), kh.GetDescriptor()) == 0)) { |
| 134 | return true; |
| 135 | } |
| 136 | } else if (cur_entry->IsUnresolvedReference() && cur_entry->GetDescriptor() == descriptor) { |
| 137 | return true; |
| 138 | } |
| 139 | return false; |
| 140 | } |
| 141 | |
| 142 | mirror::Class* RegTypeCache::ResolveClass(std::string descriptor, mirror::ClassLoader* loader) { |
| 143 | // Class was not found, must create new type. |
| 144 | // Try resolving class |
| 145 | ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); |
| 146 | mirror::Class* klass = NULL; |
| 147 | if (can_load_classes_) { |
| 148 | klass = class_linker->FindClass(descriptor.c_str(), loader); |
| 149 | } else { |
| 150 | klass = class_linker->LookupClass(descriptor.c_str(), loader); |
| 151 | } |
| 152 | return klass; |
| 153 | } |
| 154 | void RegTypeCache::ClearException() { |
| 155 | if (can_load_classes_) { |
| 156 | DCHECK(Thread::Current()->IsExceptionPending()); |
| 157 | Thread::Current()->ClearException(); |
| 158 | } else { |
| 159 | DCHECK(!Thread::Current()->IsExceptionPending()); |
| 160 | } |
| 161 | } |
| 162 | const RegType& RegTypeCache::From(mirror::ClassLoader* loader, std::string descriptor, bool precise) { |
| 163 | // Try resolving class. |
| 164 | mirror::Class* klass = ResolveClass(descriptor, loader); |
| 165 | if (klass != NULL) { |
| 166 | // Class resolved, first look for the class in the list of entries |
| 167 | for (size_t i = primitive_count_; i < entries_.size(); i++) { |
| 168 | if (entries_[i]->HasClass()) { |
| 169 | if (MatchDescriptor(i, descriptor, precise)) { |
| 170 | return *(entries_[i]); |
| 171 | } |
| 172 | } |
| 173 | } |
| 174 | // Class was not found, must create new type. |
| 175 | |
| 176 | // Create a type if: |
| 177 | // 1-The class is instantiable ( not Abstract or Interface ), we should |
| 178 | // abort failing the verification if we get that. |
| 179 | // 2- And, the class should be instantiable (Not interface, Abstract or a |
| 180 | // primitive type) OR it is imprecise. |
| 181 | |
| 182 | // Create a precise type if : |
| 183 | // 1-The class is final. |
| 184 | // 2-OR the precise was passed as true . |
| 185 | CHECK(!precise || klass->IsInstantiable()); |
| 186 | RegType* entry; |
| 187 | // Create an imprecise type if we can'tt tell for a fact that it is precise. |
| 188 | if (klass->IsFinal() || precise) { |
| 189 | entry = new PreciseReferenceType(klass, descriptor, entries_.size()); |
| 190 | } else { |
| 191 | entry = new ReferenceType(klass, descriptor, entries_.size()); |
| 192 | } |
| 193 | entries_.push_back(entry); |
| 194 | return *entry; |
| 195 | } else { // Class not resolved. |
| 196 | // We tried loading the class and failed, this might get an exception raised |
| 197 | // so we want to clear it before we go on. |
| 198 | ClearException(); |
| 199 | // Unable to resolve class. Look through unresolved types in the catch and see |
| 200 | // if we have it created before. |
| 201 | for (size_t i = primitive_count_; i < entries_.size(); i++) { |
| 202 | if (entries_[i]->IsUnresolvedReference() && |
| 203 | entries_[i]->descriptor_ == descriptor) { |
| 204 | return *(entries_[i]); |
| 205 | } |
| 206 | } |
| 207 | if (IsValidDescriptor(descriptor.c_str())) { |
| 208 | RegType* entry = new UnresolvedReferenceType(descriptor, entries_.size()); |
| 209 | entries_.push_back(entry); |
| 210 | return *entry; |
| 211 | } else { |
| 212 | // The descriptor is broken return the unknown type as there's nothing sensible that |
| 213 | // could be done at runtime |
| 214 | return Conflict(); |
| 215 | } |
| 216 | } |
| 217 | } |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 218 | const RegType& RegTypeCache::FromClass(mirror::Class* klass, bool precise) { |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 219 | if (klass->IsPrimitive()) { |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame^] | 220 | return RegTypeFromPrimitiveType(klass->GetPrimitiveType()); |
| 221 | |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 222 | } else { |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame^] | 223 | // Look for the reference in the list of entries to have. |
| 224 | for (size_t i = primitive_count_; i < entries_.size(); i++) { |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 225 | RegType* cur_entry = entries_[i]; |
Ian Rogers | b490357 | 2012-10-11 11:52:56 -0700 | [diff] [blame] | 226 | if ((cur_entry->HasClass()) && |
| 227 | MatchingPrecisionForClass(cur_entry, precise) && cur_entry->GetClass() == klass) { |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 228 | return *cur_entry; |
| 229 | } |
| 230 | } |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame^] | 231 | // No reference to the class was found, create new reference. |
| 232 | RegType* entry; |
| 233 | std::string empty = ""; |
| 234 | if (precise) { |
| 235 | entry = new PreciseReferenceType(klass, empty, entries_.size()); |
| 236 | } else { |
| 237 | entry = new ReferenceType(klass, empty, entries_.size()); |
| 238 | } |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 239 | entries_.push_back(entry); |
| 240 | return *entry; |
| 241 | } |
| 242 | } |
| 243 | |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame^] | 244 | RegTypeCache::~RegTypeCache() { |
| 245 | CHECK_LE(primitive_count_, entries_.size()); |
| 246 | // Delete only the non primitive types. |
| 247 | if (primitive_count_ == static_cast<uint16_t>(entries_.size())) { |
| 248 | // All entries are primitive, nothing to delete. |
| 249 | return; |
| 250 | } |
| 251 | std::vector<RegType*>::iterator non_primitive_begin = entries_.begin(); |
| 252 | std::advance(non_primitive_begin, primitive_count_); |
| 253 | STLDeleteContainerPointers(non_primitive_begin, entries_.end()); |
| 254 | } |
| 255 | |
| 256 | void RegTypeCache::ShutDown() { |
| 257 | if (RegTypeCache::primitive_initialized_) { |
| 258 | UndefinedType::Destroy(); |
| 259 | ConflictType::Destroy(); |
| 260 | BooleanType::Destroy(); |
| 261 | ByteType::Destroy(); |
| 262 | ShortType::Destroy(); |
| 263 | CharType::Destroy(); |
| 264 | IntegerType::Destroy(); |
| 265 | LongLoType::Destroy(); |
| 266 | LongHiType::Destroy(); |
| 267 | FloatType::GetInstance(); |
| 268 | DoubleLoType::Destroy(); |
| 269 | DoubleHiType::Destroy(); |
| 270 | RegTypeCache::primitive_initialized_ = false; |
| 271 | RegTypeCache::primitive_count_ = 0; |
| 272 | } |
| 273 | } |
| 274 | |
| 275 | void RegTypeCache::CreatePrimitiveTypes() { |
| 276 | CreatePrimitiveTypeInstance<UndefinedType>(NULL, ""); |
| 277 | CreatePrimitiveTypeInstance<ConflictType>(NULL, ""); |
| 278 | CreatePrimitiveTypeInstance<BooleanType>(NULL, "Z"); |
| 279 | CreatePrimitiveTypeInstance<ByteType>(NULL, "B"); |
| 280 | CreatePrimitiveTypeInstance<ShortType>(NULL, "S"); |
| 281 | CreatePrimitiveTypeInstance<CharType>(NULL, "C"); |
| 282 | CreatePrimitiveTypeInstance<IntegerType>(NULL, "I"); |
| 283 | CreatePrimitiveTypeInstance<LongLoType>(NULL, "J"); |
| 284 | CreatePrimitiveTypeInstance<LongHiType>(NULL, "J"); |
| 285 | CreatePrimitiveTypeInstance<FloatType>(NULL, "F"); |
| 286 | CreatePrimitiveTypeInstance<DoubleLoType>(NULL, "D"); |
| 287 | CreatePrimitiveTypeInstance<DoubleHiType>(NULL, "D"); |
| 288 | } |
| 289 | |
Ian Rogers | 529781d | 2012-07-23 17:24:29 -0700 | [diff] [blame] | 290 | const RegType& RegTypeCache::FromUnresolvedMerge(const RegType& left, const RegType& right) { |
| 291 | std::set<uint16_t> types; |
| 292 | if (left.IsUnresolvedMergedReference()) { |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame^] | 293 | RegType& non_const(const_cast<RegType&>(left)); |
| 294 | types = (down_cast<UnresolvedMergedType*>(&non_const))->GetMergedTypes(); |
Ian Rogers | 529781d | 2012-07-23 17:24:29 -0700 | [diff] [blame] | 295 | } else { |
| 296 | types.insert(left.GetId()); |
| 297 | } |
| 298 | if (right.IsUnresolvedMergedReference()) { |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame^] | 299 | RegType& non_const(const_cast<RegType&>(right)); |
| 300 | std::set<uint16_t> right_types = (down_cast<UnresolvedMergedType*>(&non_const))->GetMergedTypes(); |
Ian Rogers | 529781d | 2012-07-23 17:24:29 -0700 | [diff] [blame] | 301 | types.insert(right_types.begin(), right_types.end()); |
| 302 | } else { |
| 303 | types.insert(right.GetId()); |
| 304 | } |
| 305 | // Check if entry already exists. |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame^] | 306 | for (size_t i = primitive_count_; i < entries_.size(); i++) { |
Ian Rogers | 529781d | 2012-07-23 17:24:29 -0700 | [diff] [blame] | 307 | RegType* cur_entry = entries_[i]; |
| 308 | if (cur_entry->IsUnresolvedMergedReference()) { |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame^] | 309 | std::set<uint16_t> cur_entry_types = |
| 310 | (down_cast<UnresolvedMergedType*>(cur_entry))->GetMergedTypes(); |
Ian Rogers | 529781d | 2012-07-23 17:24:29 -0700 | [diff] [blame] | 311 | if (cur_entry_types == types) { |
| 312 | return *cur_entry; |
| 313 | } |
| 314 | } |
| 315 | } |
| 316 | // Create entry. |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame^] | 317 | RegType* entry = new UnresolvedMergedType(left.GetId(), right.GetId(), this, entries_.size()); |
Ian Rogers | 529781d | 2012-07-23 17:24:29 -0700 | [diff] [blame] | 318 | entries_.push_back(entry); |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame^] | 319 | #ifndef NDEBUG |
| 320 | UnresolvedMergedType* tmp_entry = down_cast<UnresolvedMergedType*>(entry); |
| 321 | std::set<uint16_t> check_types = tmp_entry->GetMergedTypes(); |
Ian Rogers | 529781d | 2012-07-23 17:24:29 -0700 | [diff] [blame] | 322 | CHECK(check_types == types); |
| 323 | #endif |
| 324 | return *entry; |
| 325 | } |
Ian Rogers | 529781d | 2012-07-23 17:24:29 -0700 | [diff] [blame] | 326 | const RegType& RegTypeCache::FromUnresolvedSuperClass(const RegType& child) { |
| 327 | // Check if entry already exists. |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame^] | 328 | for (size_t i = primitive_count_; i < entries_.size(); i++) { |
| 329 | RegType* cur_entry = entries_[i]; |
| 330 | if (cur_entry->IsUnresolvedSuperClass()) { |
| 331 | UnresolvedSuperClass* tmp_entry = |
| 332 | down_cast<UnresolvedSuperClass*>(cur_entry); |
| 333 | uint16_t unresolved_super_child_id = |
| 334 | tmp_entry->GetUnresolvedSuperClassChildId(); |
| 335 | if (unresolved_super_child_id == child.GetId()) { |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 336 | return *cur_entry; |
| 337 | } |
| 338 | } |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame^] | 339 | } |
| 340 | RegType* entry = new UnresolvedSuperClass(child.GetId(), this, entries_.size()); |
| 341 | entries_.push_back(entry); |
| 342 | return *entry; |
| 343 | } |
| 344 | const RegType& RegTypeCache::Uninitialized(const RegType& type, uint32_t allocation_pc) { |
| 345 | RegType* entry = NULL; |
| 346 | RegType* cur_entry = NULL; |
| 347 | if (type.IsUnresolvedTypes()) { |
| 348 | std::string descriptor(type.GetDescriptor()); |
| 349 | for (size_t i = primitive_count_; i < entries_.size(); i++) { |
| 350 | cur_entry = entries_[i]; |
| 351 | if (cur_entry->IsUnresolvedAndUninitializedReference() && |
| 352 | down_cast<UnresolvedUninitializedRefType*>(cur_entry)->GetAllocationPc() == allocation_pc && |
| 353 | (cur_entry->GetDescriptor() == descriptor)) { |
| 354 | return *cur_entry; |
| 355 | } |
| 356 | } |
| 357 | entry = new UnresolvedUninitializedRefType(descriptor, allocation_pc, entries_.size()); |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 358 | } else { |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 359 | mirror::Class* klass = type.GetClass(); |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame^] | 360 | for (size_t i = primitive_count_; i < entries_.size(); i++) { |
| 361 | cur_entry = entries_[i]; |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 362 | if (cur_entry->IsUninitializedReference() && |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame^] | 363 | down_cast<UninitialisedReferenceType*>(cur_entry) |
| 364 | ->GetAllocationPc() == allocation_pc && |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 365 | cur_entry->GetClass() == klass) { |
| 366 | return *cur_entry; |
| 367 | } |
| 368 | } |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame^] | 369 | std::string descriptor = ""; |
| 370 | entry = new UninitialisedReferenceType(klass, descriptor, allocation_pc, entries_.size()); |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 371 | } |
| 372 | entries_.push_back(entry); |
| 373 | return *entry; |
| 374 | } |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 375 | const RegType& RegTypeCache::FromUninitialized(const RegType& uninit_type) { |
| 376 | RegType* entry; |
| 377 | if (uninit_type.IsUnresolvedTypes()) { |
Elliott Hughes | 80537bb | 2013-01-04 16:37:26 -0800 | [diff] [blame] | 378 | std::string descriptor(uninit_type.GetDescriptor()); |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame^] | 379 | for (size_t i = primitive_count_; i < entries_.size(); i++) { |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 380 | RegType* cur_entry = entries_[i]; |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame^] | 381 | if (cur_entry->IsUnresolvedReference() && |
| 382 | cur_entry->GetDescriptor() == descriptor) { |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 383 | return *cur_entry; |
| 384 | } |
| 385 | } |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame^] | 386 | entry = new UnresolvedReferenceType(descriptor, entries_.size()); |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 387 | } else { |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 388 | mirror::Class* klass = uninit_type.GetClass(); |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame^] | 389 | for (size_t i = primitive_count_; i < entries_.size(); i++) { |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 390 | RegType* cur_entry = entries_[i]; |
Ian Rogers | b490357 | 2012-10-11 11:52:56 -0700 | [diff] [blame] | 391 | if (cur_entry->IsPreciseReference() && cur_entry->GetClass() == klass) { |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 392 | return *cur_entry; |
| 393 | } |
| 394 | } |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame^] | 395 | std::string descriptor = ""; |
| 396 | entry = new PreciseReferenceType(klass, descriptor, entries_.size()); |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 397 | } |
| 398 | entries_.push_back(entry); |
| 399 | return *entry; |
| 400 | } |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 401 | const RegType& RegTypeCache::ByteConstant() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| 402 | return FromCat1Const(std::numeric_limits<jbyte>::min(), false); |
| 403 | } |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 404 | const RegType& RegTypeCache::ShortConstant() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| 405 | return FromCat1Const(std::numeric_limits<jshort>::min(), false); |
| 406 | } |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 407 | const RegType& RegTypeCache::IntConstant() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| 408 | return FromCat1Const(std::numeric_limits<jint>::max(), false); |
| 409 | } |
Ian Rogers | ad0b3a3 | 2012-04-16 14:50:24 -0700 | [diff] [blame] | 410 | const RegType& RegTypeCache::UninitializedThisArgument(const RegType& type) { |
Ian Rogers | ad0b3a3 | 2012-04-16 14:50:24 -0700 | [diff] [blame] | 411 | RegType* entry; |
| 412 | if (type.IsUnresolvedTypes()) { |
Elliott Hughes | 80537bb | 2013-01-04 16:37:26 -0800 | [diff] [blame] | 413 | std::string descriptor(type.GetDescriptor()); |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame^] | 414 | for (size_t i = primitive_count_; i < entries_.size(); i++) { |
Ian Rogers | ad0b3a3 | 2012-04-16 14:50:24 -0700 | [diff] [blame] | 415 | RegType* cur_entry = entries_[i]; |
| 416 | if (cur_entry->IsUnresolvedAndUninitializedThisReference() && |
| 417 | cur_entry->GetDescriptor() == descriptor) { |
| 418 | return *cur_entry; |
| 419 | } |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 420 | } |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame^] | 421 | entry = new UnresolvedUninitialisedThisRefType(descriptor, entries_.size()); |
Ian Rogers | ad0b3a3 | 2012-04-16 14:50:24 -0700 | [diff] [blame] | 422 | } else { |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 423 | mirror::Class* klass = type.GetClass(); |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame^] | 424 | for (size_t i = primitive_count_; i < entries_.size(); i++) { |
Ian Rogers | ad0b3a3 | 2012-04-16 14:50:24 -0700 | [diff] [blame] | 425 | RegType* cur_entry = entries_[i]; |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame^] | 426 | if (cur_entry->IsUninitializedThisReference() && |
| 427 | cur_entry->GetClass() == klass) { |
Ian Rogers | ad0b3a3 | 2012-04-16 14:50:24 -0700 | [diff] [blame] | 428 | return *cur_entry; |
| 429 | } |
| 430 | } |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame^] | 431 | std::string descriptor = ""; |
| 432 | entry = new UninitialisedThisReferenceType(klass, descriptor, entries_.size()); |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 433 | } |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 434 | entries_.push_back(entry); |
| 435 | return *entry; |
| 436 | } |
Ian Rogers | 2bcb4a4 | 2012-11-08 10:39:18 -0800 | [diff] [blame] | 437 | const RegType& RegTypeCache::FromCat1Const(int32_t value, bool precise) { |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame^] | 438 | for (size_t i = primitive_count_; i < entries_.size(); i++) { |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 439 | RegType* cur_entry = entries_[i]; |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame^] | 440 | if (cur_entry->IsConstant() && cur_entry->IsPreciseConstant() == precise && |
| 441 | (down_cast<ConstantType*>(cur_entry))->ConstantValue() == value) { |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 442 | return *cur_entry; |
| 443 | } |
| 444 | } |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame^] | 445 | RegType* entry; |
| 446 | if (precise) { |
| 447 | entry = new PreciseConstType(value, entries_.size()); |
| 448 | } else { |
| 449 | entry = new ImpreciseConstType(value, entries_.size()); |
| 450 | } |
Ian Rogers | 2bcb4a4 | 2012-11-08 10:39:18 -0800 | [diff] [blame] | 451 | entries_.push_back(entry); |
| 452 | return *entry; |
| 453 | } |
| 454 | |
| 455 | const RegType& RegTypeCache::FromCat2ConstLo(int32_t value, bool precise) { |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame^] | 456 | for (size_t i = primitive_count_; i < entries_.size(); i++) { |
Ian Rogers | 2bcb4a4 | 2012-11-08 10:39:18 -0800 | [diff] [blame] | 457 | RegType* cur_entry = entries_[i]; |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame^] | 458 | if (cur_entry->IsConstantLo() && (cur_entry->IsPrecise() == precise) && |
| 459 | (down_cast<ConstantType*>(cur_entry))->ConstantValueLo() == value) { |
Ian Rogers | 2bcb4a4 | 2012-11-08 10:39:18 -0800 | [diff] [blame] | 460 | return *cur_entry; |
| 461 | } |
| 462 | } |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame^] | 463 | RegType* entry; |
| 464 | if (precise) { |
| 465 | entry = new PreciseConstLoType(value, entries_.size()); |
| 466 | } else { |
| 467 | entry = new ImpreciseConstLoType(value, entries_.size()); |
| 468 | } |
Ian Rogers | 2bcb4a4 | 2012-11-08 10:39:18 -0800 | [diff] [blame] | 469 | entries_.push_back(entry); |
| 470 | return *entry; |
| 471 | } |
| 472 | |
| 473 | const RegType& RegTypeCache::FromCat2ConstHi(int32_t value, bool precise) { |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame^] | 474 | for (size_t i = primitive_count_; i < entries_.size(); i++) { |
Ian Rogers | 2bcb4a4 | 2012-11-08 10:39:18 -0800 | [diff] [blame] | 475 | RegType* cur_entry = entries_[i]; |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame^] | 476 | if (cur_entry->IsConstantHi() && (cur_entry->IsPrecise() == precise) && |
| 477 | (down_cast<ConstantType*>(cur_entry))->ConstantValueHi() == value) { |
Ian Rogers | 2bcb4a4 | 2012-11-08 10:39:18 -0800 | [diff] [blame] | 478 | return *cur_entry; |
| 479 | } |
| 480 | } |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame^] | 481 | RegType* entry; |
| 482 | if (precise) { |
| 483 | entry = new PreciseConstHiType(value, entries_.size()); |
| 484 | } else { |
| 485 | entry = new ImpreciseConstHiType(value, entries_.size()); |
| 486 | } |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 487 | entries_.push_back(entry); |
| 488 | return *entry; |
| 489 | } |
| 490 | |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 491 | const RegType& RegTypeCache::GetComponentType(const RegType& array, mirror::ClassLoader* loader) { |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 492 | CHECK(array.IsArrayTypes()); |
| 493 | if (array.IsUnresolvedTypes()) { |
Elliott Hughes | 80537bb | 2013-01-04 16:37:26 -0800 | [diff] [blame] | 494 | std::string descriptor(array.GetDescriptor()); |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 495 | std::string component(descriptor.substr(1, descriptor.size() - 1)); |
Ian Rogers | b490357 | 2012-10-11 11:52:56 -0700 | [diff] [blame] | 496 | return FromDescriptor(loader, component.c_str(), false); |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 497 | } else { |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 498 | mirror::Class* klass = array.GetClass()->GetComponentType(); |
Ian Rogers | b490357 | 2012-10-11 11:52:56 -0700 | [diff] [blame] | 499 | return FromClass(klass, klass->IsFinal()); |
| 500 | } |
| 501 | } |
| 502 | |
| 503 | void RegTypeCache::Dump(std::ostream& os) { |
Ian Rogers | b490357 | 2012-10-11 11:52:56 -0700 | [diff] [blame] | 504 | for (size_t i = 0; i < entries_.size(); i++) { |
| 505 | RegType* cur_entry = entries_[i]; |
| 506 | if (cur_entry != NULL) { |
Ian Rogers | 2bcb4a4 | 2012-11-08 10:39:18 -0800 | [diff] [blame] | 507 | os << i << ": " << cur_entry->Dump() << "\n"; |
Ian Rogers | b490357 | 2012-10-11 11:52:56 -0700 | [diff] [blame] | 508 | } |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 509 | } |
| 510 | } |
| 511 | |
Elliott Hughes | a21039c | 2012-06-21 12:09:25 -0700 | [diff] [blame] | 512 | } // namespace verifier |
| 513 | } // namespace art |