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) { |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 117 | RegType* cur_entry = entries_[idx]; |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 118 | if (cur_entry->HasClass()) { |
Sameer Abu Asal | 2c6de22 | 2013-05-02 17:38:59 -0700 | [diff] [blame^] | 119 | // Check the descriptor in the reg_type if available. |
| 120 | if(!cur_entry->descriptor_.empty()) { |
| 121 | if (descriptor == cur_entry->descriptor_ && MatchingPrecisionForClass(cur_entry, precise)) { |
| 122 | return true; |
| 123 | } |
| 124 | } else { |
| 125 | // Descriptor not found in reg_type , maybe available in Class object. |
| 126 | // So we might have cases where we have the class but not the descriptor |
| 127 | // for that class we need the class helper to get the descriptor |
| 128 | // and match it with the one we are given. |
| 129 | ClassHelper kh(cur_entry->GetClass()); |
| 130 | if ((strcmp(descriptor.c_str(), kh.GetDescriptor()) == 0) && |
| 131 | MatchingPrecisionForClass(cur_entry, precise)) { |
| 132 | return true; |
| 133 | } |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 134 | } |
| 135 | } else if (cur_entry->IsUnresolvedReference() && cur_entry->GetDescriptor() == descriptor) { |
| 136 | return true; |
| 137 | } |
| 138 | return false; |
| 139 | } |
| 140 | |
Sameer Abu Asal | 2c6de22 | 2013-05-02 17:38:59 -0700 | [diff] [blame^] | 141 | |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 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); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 151 | if (klass != NULL && !klass->IsLoaded()) { |
| 152 | // We found the class but without it being loaded its not safe for use. |
| 153 | klass = NULL; |
| 154 | } |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 155 | } |
| 156 | return klass; |
| 157 | } |
| 158 | void RegTypeCache::ClearException() { |
| 159 | if (can_load_classes_) { |
| 160 | DCHECK(Thread::Current()->IsExceptionPending()); |
| 161 | Thread::Current()->ClearException(); |
| 162 | } else { |
| 163 | DCHECK(!Thread::Current()->IsExceptionPending()); |
| 164 | } |
| 165 | } |
| 166 | const RegType& RegTypeCache::From(mirror::ClassLoader* loader, std::string descriptor, bool precise) { |
Sameer Abu Asal | 2c6de22 | 2013-05-02 17:38:59 -0700 | [diff] [blame^] | 167 | |
| 168 | // Try looking up the class in the cache first. |
| 169 | for (size_t i = primitive_count_; i < entries_.size(); i++) { |
| 170 | if (MatchDescriptor(i, descriptor, precise)) { |
| 171 | return *(entries_[i]); |
| 172 | } |
| 173 | } |
| 174 | // Class not found in the cache, will create a new type for that. |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 175 | // Try resolving class. |
| 176 | mirror::Class* klass = ResolveClass(descriptor, loader); |
| 177 | if (klass != NULL) { |
| 178 | // Class resolved, first look for the class in the list of entries |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 179 | // Class was not found, must create new type. |
Sameer Abu Asal | 9f57a86 | 2013-04-19 10:08:00 -0700 | [diff] [blame] | 180 | //To pass the verification, the type should be imprecise, |
| 181 | // instantiable or an interface with the precise type set to false. |
Sameer Abu Asal | 02c4223 | 2013-04-30 12:09:45 -0700 | [diff] [blame] | 182 | DCHECK(!precise || klass->IsInstantiable()); |
Sameer Abu Asal | 9f57a86 | 2013-04-19 10:08:00 -0700 | [diff] [blame] | 183 | // Create a precise type if: |
Sameer Abu Asal | 2c6de22 | 2013-05-02 17:38:59 -0700 | [diff] [blame^] | 184 | // 1- Class is final and NOT an interface. a precise interface is meaningless !! |
Sameer Abu Asal | 9f57a86 | 2013-04-19 10:08:00 -0700 | [diff] [blame] | 185 | // 2- Precise Flag passed as true. |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 186 | RegType* entry; |
Sameer Abu Asal | 9f57a86 | 2013-04-19 10:08:00 -0700 | [diff] [blame] | 187 | // Create an imprecise type if we can't tell for a fact that it is precise. |
| 188 | if ((klass->IsFinal()) || precise) { |
Sameer Abu Asal | 02c4223 | 2013-04-30 12:09:45 -0700 | [diff] [blame] | 189 | DCHECK(!(klass->IsAbstract()) || klass->IsArrayClass()); |
| 190 | DCHECK(!klass->IsInterface()); |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 191 | entry = new PreciseReferenceType(klass, descriptor, entries_.size()); |
| 192 | } else { |
| 193 | entry = new ReferenceType(klass, descriptor, entries_.size()); |
| 194 | } |
| 195 | entries_.push_back(entry); |
| 196 | return *entry; |
| 197 | } else { // Class not resolved. |
| 198 | // We tried loading the class and failed, this might get an exception raised |
| 199 | // so we want to clear it before we go on. |
| 200 | ClearException(); |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 201 | if (IsValidDescriptor(descriptor.c_str())) { |
| 202 | RegType* entry = new UnresolvedReferenceType(descriptor, entries_.size()); |
| 203 | entries_.push_back(entry); |
| 204 | return *entry; |
| 205 | } else { |
| 206 | // The descriptor is broken return the unknown type as there's nothing sensible that |
| 207 | // could be done at runtime |
| 208 | return Conflict(); |
| 209 | } |
| 210 | } |
| 211 | } |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 212 | const RegType& RegTypeCache::FromClass(mirror::Class* klass, bool precise) { |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 213 | if (klass->IsPrimitive()) { |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 214 | return RegTypeFromPrimitiveType(klass->GetPrimitiveType()); |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 215 | } else { |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 216 | // Look for the reference in the list of entries to have. |
| 217 | for (size_t i = primitive_count_; i < entries_.size(); i++) { |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 218 | RegType* cur_entry = entries_[i]; |
Sameer Abu Asal | 2c6de22 | 2013-05-02 17:38:59 -0700 | [diff] [blame^] | 219 | if ((cur_entry->HasClass()) && cur_entry->GetClass() == klass && |
| 220 | MatchingPrecisionForClass(cur_entry, precise)) { |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 221 | return *cur_entry; |
| 222 | } |
| 223 | } |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 224 | // No reference to the class was found, create new reference. |
| 225 | RegType* entry; |
| 226 | std::string empty = ""; |
| 227 | if (precise) { |
| 228 | entry = new PreciseReferenceType(klass, empty, entries_.size()); |
| 229 | } else { |
| 230 | entry = new ReferenceType(klass, empty, entries_.size()); |
| 231 | } |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 232 | entries_.push_back(entry); |
| 233 | return *entry; |
| 234 | } |
| 235 | } |
| 236 | |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 237 | RegTypeCache::~RegTypeCache() { |
| 238 | CHECK_LE(primitive_count_, entries_.size()); |
| 239 | // Delete only the non primitive types. |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 240 | if (entries_.size() == kNumPrimitives) { |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 241 | // All entries are primitive, nothing to delete. |
| 242 | return; |
| 243 | } |
| 244 | std::vector<RegType*>::iterator non_primitive_begin = entries_.begin(); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 245 | std::advance(non_primitive_begin, kNumPrimitives); |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 246 | STLDeleteContainerPointers(non_primitive_begin, entries_.end()); |
| 247 | } |
| 248 | |
| 249 | void RegTypeCache::ShutDown() { |
| 250 | if (RegTypeCache::primitive_initialized_) { |
| 251 | UndefinedType::Destroy(); |
| 252 | ConflictType::Destroy(); |
| 253 | BooleanType::Destroy(); |
| 254 | ByteType::Destroy(); |
| 255 | ShortType::Destroy(); |
| 256 | CharType::Destroy(); |
| 257 | IntegerType::Destroy(); |
| 258 | LongLoType::Destroy(); |
| 259 | LongHiType::Destroy(); |
Ian Rogers | 25ae7eb | 2013-04-18 16:06:05 -0700 | [diff] [blame] | 260 | FloatType::Destroy(); |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 261 | DoubleLoType::Destroy(); |
| 262 | DoubleHiType::Destroy(); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 263 | RegTypeCache::primitive_initialized_ = false; |
| 264 | RegTypeCache::primitive_count_ = 0; |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 265 | } |
| 266 | } |
| 267 | |
| 268 | void RegTypeCache::CreatePrimitiveTypes() { |
| 269 | CreatePrimitiveTypeInstance<UndefinedType>(NULL, ""); |
| 270 | CreatePrimitiveTypeInstance<ConflictType>(NULL, ""); |
| 271 | CreatePrimitiveTypeInstance<BooleanType>(NULL, "Z"); |
| 272 | CreatePrimitiveTypeInstance<ByteType>(NULL, "B"); |
| 273 | CreatePrimitiveTypeInstance<ShortType>(NULL, "S"); |
| 274 | CreatePrimitiveTypeInstance<CharType>(NULL, "C"); |
| 275 | CreatePrimitiveTypeInstance<IntegerType>(NULL, "I"); |
| 276 | CreatePrimitiveTypeInstance<LongLoType>(NULL, "J"); |
| 277 | CreatePrimitiveTypeInstance<LongHiType>(NULL, "J"); |
| 278 | CreatePrimitiveTypeInstance<FloatType>(NULL, "F"); |
| 279 | CreatePrimitiveTypeInstance<DoubleLoType>(NULL, "D"); |
| 280 | CreatePrimitiveTypeInstance<DoubleHiType>(NULL, "D"); |
| 281 | } |
| 282 | |
Ian Rogers | 529781d | 2012-07-23 17:24:29 -0700 | [diff] [blame] | 283 | const RegType& RegTypeCache::FromUnresolvedMerge(const RegType& left, const RegType& right) { |
| 284 | std::set<uint16_t> types; |
| 285 | if (left.IsUnresolvedMergedReference()) { |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 286 | RegType& non_const(const_cast<RegType&>(left)); |
| 287 | types = (down_cast<UnresolvedMergedType*>(&non_const))->GetMergedTypes(); |
Ian Rogers | 529781d | 2012-07-23 17:24:29 -0700 | [diff] [blame] | 288 | } else { |
| 289 | types.insert(left.GetId()); |
| 290 | } |
| 291 | if (right.IsUnresolvedMergedReference()) { |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 292 | RegType& non_const(const_cast<RegType&>(right)); |
| 293 | std::set<uint16_t> right_types = (down_cast<UnresolvedMergedType*>(&non_const))->GetMergedTypes(); |
Ian Rogers | 529781d | 2012-07-23 17:24:29 -0700 | [diff] [blame] | 294 | types.insert(right_types.begin(), right_types.end()); |
| 295 | } else { |
| 296 | types.insert(right.GetId()); |
| 297 | } |
| 298 | // Check if entry already exists. |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 299 | for (size_t i = primitive_count_; i < entries_.size(); i++) { |
Ian Rogers | 529781d | 2012-07-23 17:24:29 -0700 | [diff] [blame] | 300 | RegType* cur_entry = entries_[i]; |
| 301 | if (cur_entry->IsUnresolvedMergedReference()) { |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 302 | std::set<uint16_t> cur_entry_types = |
| 303 | (down_cast<UnresolvedMergedType*>(cur_entry))->GetMergedTypes(); |
Ian Rogers | 529781d | 2012-07-23 17:24:29 -0700 | [diff] [blame] | 304 | if (cur_entry_types == types) { |
| 305 | return *cur_entry; |
| 306 | } |
| 307 | } |
| 308 | } |
| 309 | // Create entry. |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 310 | RegType* entry = new UnresolvedMergedType(left.GetId(), right.GetId(), this, entries_.size()); |
Ian Rogers | 529781d | 2012-07-23 17:24:29 -0700 | [diff] [blame] | 311 | entries_.push_back(entry); |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 312 | #ifndef NDEBUG |
| 313 | UnresolvedMergedType* tmp_entry = down_cast<UnresolvedMergedType*>(entry); |
| 314 | std::set<uint16_t> check_types = tmp_entry->GetMergedTypes(); |
Ian Rogers | 529781d | 2012-07-23 17:24:29 -0700 | [diff] [blame] | 315 | CHECK(check_types == types); |
| 316 | #endif |
| 317 | return *entry; |
| 318 | } |
Ian Rogers | 529781d | 2012-07-23 17:24:29 -0700 | [diff] [blame] | 319 | const RegType& RegTypeCache::FromUnresolvedSuperClass(const RegType& child) { |
| 320 | // Check if entry already exists. |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 321 | for (size_t i = primitive_count_; i < entries_.size(); i++) { |
| 322 | RegType* cur_entry = entries_[i]; |
| 323 | if (cur_entry->IsUnresolvedSuperClass()) { |
| 324 | UnresolvedSuperClass* tmp_entry = |
| 325 | down_cast<UnresolvedSuperClass*>(cur_entry); |
| 326 | uint16_t unresolved_super_child_id = |
| 327 | tmp_entry->GetUnresolvedSuperClassChildId(); |
| 328 | if (unresolved_super_child_id == child.GetId()) { |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 329 | return *cur_entry; |
| 330 | } |
| 331 | } |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 332 | } |
| 333 | RegType* entry = new UnresolvedSuperClass(child.GetId(), this, entries_.size()); |
| 334 | entries_.push_back(entry); |
| 335 | return *entry; |
| 336 | } |
| 337 | const RegType& RegTypeCache::Uninitialized(const RegType& type, uint32_t allocation_pc) { |
| 338 | RegType* entry = NULL; |
| 339 | RegType* cur_entry = NULL; |
| 340 | if (type.IsUnresolvedTypes()) { |
| 341 | std::string descriptor(type.GetDescriptor()); |
| 342 | for (size_t i = primitive_count_; i < entries_.size(); i++) { |
| 343 | cur_entry = entries_[i]; |
| 344 | if (cur_entry->IsUnresolvedAndUninitializedReference() && |
| 345 | down_cast<UnresolvedUninitializedRefType*>(cur_entry)->GetAllocationPc() == allocation_pc && |
| 346 | (cur_entry->GetDescriptor() == descriptor)) { |
| 347 | return *cur_entry; |
| 348 | } |
| 349 | } |
| 350 | entry = new UnresolvedUninitializedRefType(descriptor, allocation_pc, entries_.size()); |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 351 | } else { |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 352 | mirror::Class* klass = type.GetClass(); |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 353 | for (size_t i = primitive_count_; i < entries_.size(); i++) { |
| 354 | cur_entry = entries_[i]; |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 355 | if (cur_entry->IsUninitializedReference() && |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 356 | down_cast<UninitialisedReferenceType*>(cur_entry) |
| 357 | ->GetAllocationPc() == allocation_pc && |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 358 | cur_entry->GetClass() == klass) { |
| 359 | return *cur_entry; |
| 360 | } |
| 361 | } |
Sameer Abu Asal | 02c4223 | 2013-04-30 12:09:45 -0700 | [diff] [blame] | 362 | std::string descriptor(""); |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 363 | entry = new UninitialisedReferenceType(klass, descriptor, allocation_pc, entries_.size()); |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 364 | } |
| 365 | entries_.push_back(entry); |
| 366 | return *entry; |
| 367 | } |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 368 | const RegType& RegTypeCache::FromUninitialized(const RegType& uninit_type) { |
| 369 | RegType* entry; |
Sameer Abu Asal | 9f57a86 | 2013-04-19 10:08:00 -0700 | [diff] [blame] | 370 | |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 371 | if (uninit_type.IsUnresolvedTypes()) { |
Elliott Hughes | 80537bb | 2013-01-04 16:37:26 -0800 | [diff] [blame] | 372 | std::string descriptor(uninit_type.GetDescriptor()); |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 373 | for (size_t i = primitive_count_; i < entries_.size(); i++) { |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 374 | RegType* cur_entry = entries_[i]; |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 375 | if (cur_entry->IsUnresolvedReference() && |
| 376 | cur_entry->GetDescriptor() == descriptor) { |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 377 | return *cur_entry; |
| 378 | } |
| 379 | } |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 380 | entry = new UnresolvedReferenceType(descriptor, entries_.size()); |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 381 | } else { |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 382 | mirror::Class* klass = uninit_type.GetClass(); |
Sameer Abu Asal | 9f57a86 | 2013-04-19 10:08:00 -0700 | [diff] [blame] | 383 | if(uninit_type.IsUninitializedThisReference() && !klass->IsFinal()) { |
| 384 | // For uninitialized this reference look for reference types that are not precise. |
| 385 | for (size_t i = primitive_count_; i < entries_.size(); i++) { |
| 386 | RegType* cur_entry = entries_[i]; |
| 387 | if (cur_entry->IsReference() && cur_entry->GetClass() == klass) { |
| 388 | return *cur_entry; |
| 389 | } |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 390 | } |
Sameer Abu Asal | 02c4223 | 2013-04-30 12:09:45 -0700 | [diff] [blame] | 391 | std::string descriptor(""); |
Sameer Abu Asal | 9f57a86 | 2013-04-19 10:08:00 -0700 | [diff] [blame] | 392 | entry = new ReferenceType(klass, descriptor, entries_.size()); |
| 393 | } else { |
Sameer Abu Asal | 02c4223 | 2013-04-30 12:09:45 -0700 | [diff] [blame] | 394 | std::string descriptor; |
| 395 | if (klass->IsFinal()) { |
| 396 | if (klass->IsInstantiable()) { |
| 397 | for (size_t i = primitive_count_; i < entries_.size(); i++) { |
| 398 | RegType* cur_entry = entries_[i]; |
| 399 | if (cur_entry->IsPreciseReference() && cur_entry->GetClass() == klass) { |
| 400 | return *cur_entry; |
| 401 | } |
| 402 | } |
| 403 | // Precise type was not found , create one ! |
| 404 | entry = new PreciseReferenceType(klass, descriptor, entries_.size()); |
| 405 | } else { |
| 406 | return Conflict(); |
| 407 | } |
| 408 | } else { |
| 409 | // Not a final class, create an imprecise reference. Look up if we have it in the cache first. |
| 410 | for (size_t i = primitive_count_; i < entries_.size(); i++) { |
| 411 | RegType* cur_entry = entries_[i]; |
| 412 | if (cur_entry->IsReference() && !(cur_entry->IsPrecise()) && |
| 413 | cur_entry->GetClass() == klass) { |
| 414 | return *cur_entry; |
| 415 | } |
Sameer Abu Asal | 9f57a86 | 2013-04-19 10:08:00 -0700 | [diff] [blame] | 416 | } |
Sameer Abu Asal | 02c4223 | 2013-04-30 12:09:45 -0700 | [diff] [blame] | 417 | entry = new ReferenceType(klass, descriptor, entries_.size()); |
Sameer Abu Asal | 9f57a86 | 2013-04-19 10:08:00 -0700 | [diff] [blame] | 418 | } |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 419 | } |
Sameer Abu Asal | 9f57a86 | 2013-04-19 10:08:00 -0700 | [diff] [blame] | 420 | } |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 421 | entries_.push_back(entry); |
| 422 | return *entry; |
| 423 | } |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 424 | const RegType& RegTypeCache::ByteConstant() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| 425 | return FromCat1Const(std::numeric_limits<jbyte>::min(), false); |
| 426 | } |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 427 | const RegType& RegTypeCache::ShortConstant() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| 428 | return FromCat1Const(std::numeric_limits<jshort>::min(), false); |
| 429 | } |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 430 | const RegType& RegTypeCache::IntConstant() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| 431 | return FromCat1Const(std::numeric_limits<jint>::max(), false); |
| 432 | } |
Ian Rogers | ad0b3a3 | 2012-04-16 14:50:24 -0700 | [diff] [blame] | 433 | const RegType& RegTypeCache::UninitializedThisArgument(const RegType& type) { |
Ian Rogers | ad0b3a3 | 2012-04-16 14:50:24 -0700 | [diff] [blame] | 434 | RegType* entry; |
| 435 | if (type.IsUnresolvedTypes()) { |
Elliott Hughes | 80537bb | 2013-01-04 16:37:26 -0800 | [diff] [blame] | 436 | std::string descriptor(type.GetDescriptor()); |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 437 | for (size_t i = primitive_count_; i < entries_.size(); i++) { |
Ian Rogers | ad0b3a3 | 2012-04-16 14:50:24 -0700 | [diff] [blame] | 438 | RegType* cur_entry = entries_[i]; |
| 439 | if (cur_entry->IsUnresolvedAndUninitializedThisReference() && |
| 440 | cur_entry->GetDescriptor() == descriptor) { |
| 441 | return *cur_entry; |
| 442 | } |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 443 | } |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 444 | entry = new UnresolvedUninitialisedThisRefType(descriptor, entries_.size()); |
Ian Rogers | ad0b3a3 | 2012-04-16 14:50:24 -0700 | [diff] [blame] | 445 | } else { |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 446 | mirror::Class* klass = type.GetClass(); |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 447 | for (size_t i = primitive_count_; i < entries_.size(); i++) { |
Ian Rogers | ad0b3a3 | 2012-04-16 14:50:24 -0700 | [diff] [blame] | 448 | RegType* cur_entry = entries_[i]; |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 449 | if (cur_entry->IsUninitializedThisReference() && |
| 450 | cur_entry->GetClass() == klass) { |
Ian Rogers | ad0b3a3 | 2012-04-16 14:50:24 -0700 | [diff] [blame] | 451 | return *cur_entry; |
| 452 | } |
| 453 | } |
Sameer Abu Asal | 02c4223 | 2013-04-30 12:09:45 -0700 | [diff] [blame] | 454 | std::string descriptor(""); |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 455 | entry = new UninitialisedThisReferenceType(klass, descriptor, entries_.size()); |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 456 | } |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 457 | entries_.push_back(entry); |
| 458 | return *entry; |
| 459 | } |
Ian Rogers | 2bcb4a4 | 2012-11-08 10:39:18 -0800 | [diff] [blame] | 460 | const RegType& RegTypeCache::FromCat1Const(int32_t value, bool precise) { |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 461 | for (size_t i = primitive_count_; i < entries_.size(); i++) { |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 462 | RegType* cur_entry = entries_[i]; |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 463 | if (cur_entry->IsConstant() && cur_entry->IsPreciseConstant() == precise && |
| 464 | (down_cast<ConstantType*>(cur_entry))->ConstantValue() == value) { |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 465 | return *cur_entry; |
| 466 | } |
| 467 | } |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 468 | RegType* entry; |
| 469 | if (precise) { |
| 470 | entry = new PreciseConstType(value, entries_.size()); |
| 471 | } else { |
| 472 | entry = new ImpreciseConstType(value, entries_.size()); |
| 473 | } |
Ian Rogers | 2bcb4a4 | 2012-11-08 10:39:18 -0800 | [diff] [blame] | 474 | entries_.push_back(entry); |
| 475 | return *entry; |
| 476 | } |
| 477 | |
| 478 | const RegType& RegTypeCache::FromCat2ConstLo(int32_t value, bool precise) { |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 479 | for (size_t i = primitive_count_; i < entries_.size(); i++) { |
Ian Rogers | 2bcb4a4 | 2012-11-08 10:39:18 -0800 | [diff] [blame] | 480 | RegType* cur_entry = entries_[i]; |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 481 | if (cur_entry->IsConstantLo() && (cur_entry->IsPrecise() == precise) && |
| 482 | (down_cast<ConstantType*>(cur_entry))->ConstantValueLo() == value) { |
Ian Rogers | 2bcb4a4 | 2012-11-08 10:39:18 -0800 | [diff] [blame] | 483 | return *cur_entry; |
| 484 | } |
| 485 | } |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 486 | RegType* entry; |
| 487 | if (precise) { |
| 488 | entry = new PreciseConstLoType(value, entries_.size()); |
| 489 | } else { |
| 490 | entry = new ImpreciseConstLoType(value, entries_.size()); |
| 491 | } |
Ian Rogers | 2bcb4a4 | 2012-11-08 10:39:18 -0800 | [diff] [blame] | 492 | entries_.push_back(entry); |
| 493 | return *entry; |
| 494 | } |
| 495 | |
| 496 | const RegType& RegTypeCache::FromCat2ConstHi(int32_t value, bool precise) { |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 497 | for (size_t i = primitive_count_; i < entries_.size(); i++) { |
Ian Rogers | 2bcb4a4 | 2012-11-08 10:39:18 -0800 | [diff] [blame] | 498 | RegType* cur_entry = entries_[i]; |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 499 | if (cur_entry->IsConstantHi() && (cur_entry->IsPrecise() == precise) && |
| 500 | (down_cast<ConstantType*>(cur_entry))->ConstantValueHi() == value) { |
Ian Rogers | 2bcb4a4 | 2012-11-08 10:39:18 -0800 | [diff] [blame] | 501 | return *cur_entry; |
| 502 | } |
| 503 | } |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 504 | RegType* entry; |
| 505 | if (precise) { |
| 506 | entry = new PreciseConstHiType(value, entries_.size()); |
| 507 | } else { |
| 508 | entry = new ImpreciseConstHiType(value, entries_.size()); |
| 509 | } |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 510 | entries_.push_back(entry); |
| 511 | return *entry; |
| 512 | } |
| 513 | |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 514 | const RegType& RegTypeCache::GetComponentType(const RegType& array, mirror::ClassLoader* loader) { |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 515 | CHECK(array.IsArrayTypes()); |
| 516 | if (array.IsUnresolvedTypes()) { |
Elliott Hughes | 80537bb | 2013-01-04 16:37:26 -0800 | [diff] [blame] | 517 | std::string descriptor(array.GetDescriptor()); |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 518 | std::string component(descriptor.substr(1, descriptor.size() - 1)); |
Ian Rogers | b490357 | 2012-10-11 11:52:56 -0700 | [diff] [blame] | 519 | return FromDescriptor(loader, component.c_str(), false); |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 520 | } else { |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 521 | mirror::Class* klass = array.GetClass()->GetComponentType(); |
Ian Rogers | b490357 | 2012-10-11 11:52:56 -0700 | [diff] [blame] | 522 | return FromClass(klass, klass->IsFinal()); |
| 523 | } |
| 524 | } |
| 525 | |
| 526 | void RegTypeCache::Dump(std::ostream& os) { |
Ian Rogers | b490357 | 2012-10-11 11:52:56 -0700 | [diff] [blame] | 527 | for (size_t i = 0; i < entries_.size(); i++) { |
| 528 | RegType* cur_entry = entries_[i]; |
| 529 | if (cur_entry != NULL) { |
Ian Rogers | 2bcb4a4 | 2012-11-08 10:39:18 -0800 | [diff] [blame] | 530 | os << i << ": " << cur_entry->Dump() << "\n"; |
Ian Rogers | b490357 | 2012-10-11 11:52:56 -0700 | [diff] [blame] | 531 | } |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 532 | } |
| 533 | } |
| 534 | |
Elliott Hughes | a21039c | 2012-06-21 12:09:25 -0700 | [diff] [blame] | 535 | } // namespace verifier |
| 536 | } // namespace art |