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 { |
Ian Rogers | 1bf8d4d | 2013-05-30 00:18:49 -0700 | [diff] [blame] | 27 | |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 28 | bool RegTypeCache::primitive_initialized_ = false; |
| 29 | uint16_t RegTypeCache::primitive_start_ = 0; |
| 30 | uint16_t RegTypeCache::primitive_count_ = 0; |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 31 | |
Ian Rogers | b490357 | 2012-10-11 11:52:56 -0700 | [diff] [blame] | 32 | static bool MatchingPrecisionForClass(RegType* entry, bool precise) |
| 33 | SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
Ian Rogers | 04f94f4 | 2013-06-10 15:09:26 -0700 | [diff] [blame^] | 34 | if (entry->IsPreciseReference() == precise) { |
| 35 | // We were or weren't looking for a precise reference and we found what we need. |
| 36 | return true; |
| 37 | } else { |
| 38 | if (!precise && entry->GetClass()->CannotBeAssignedFromOtherTypes()) { |
| 39 | // We weren't looking for a precise reference, as we're looking up based on a descriptor, but |
| 40 | // we found a matching entry based on the descriptor. Return the precise entry in that case. |
| 41 | return true; |
| 42 | } |
| 43 | return false; |
| 44 | } |
Ian Rogers | b490357 | 2012-10-11 11:52:56 -0700 | [diff] [blame] | 45 | } |
| 46 | |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 47 | void RegTypeCache::FillPrimitiveTypes() { |
| 48 | entries_.push_back(UndefinedType::GetInstance()); |
| 49 | entries_.push_back(ConflictType::GetInstance()); |
| 50 | entries_.push_back(BooleanType::GetInstance()); |
| 51 | entries_.push_back(ByteType::GetInstance()); |
| 52 | entries_.push_back(ShortType::GetInstance()); |
| 53 | entries_.push_back(CharType::GetInstance()); |
| 54 | entries_.push_back(IntegerType::GetInstance()); |
| 55 | entries_.push_back(LongLoType::GetInstance()); |
| 56 | entries_.push_back(LongHiType::GetInstance()); |
| 57 | entries_.push_back(FloatType::GetInstance()); |
| 58 | entries_.push_back(DoubleLoType::GetInstance()); |
| 59 | entries_.push_back(DoubleHiType::GetInstance()); |
| 60 | DCHECK_EQ(entries_.size(), primitive_count_); |
| 61 | } |
| 62 | |
Ian Rogers | 1bf8d4d | 2013-05-30 00:18:49 -0700 | [diff] [blame] | 63 | const RegType& RegTypeCache::FromDescriptor(mirror::ClassLoader* loader, const char* descriptor, |
| 64 | bool precise) { |
| 65 | DCHECK(RegTypeCache::primitive_initialized_); |
| 66 | if (descriptor[1] == '\0') { |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 67 | switch (descriptor[0]) { |
| 68 | case 'Z': |
| 69 | return Boolean(); |
| 70 | case 'B': |
| 71 | return Byte(); |
| 72 | case 'S': |
| 73 | return Short(); |
| 74 | case 'C': |
| 75 | return Char(); |
| 76 | case 'I': |
| 77 | return Integer(); |
| 78 | case 'J': |
| 79 | return LongLo(); |
| 80 | case 'F': |
| 81 | return Float(); |
| 82 | case 'D': |
| 83 | return DoubleLo(); |
| 84 | case 'V': // For void types, conflict types. |
| 85 | default: |
Ian Rogers | ad0b3a3 | 2012-04-16 14:50:24 -0700 | [diff] [blame] | 86 | return Conflict(); |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 87 | } |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 88 | } else if (descriptor[0] == 'L' || descriptor[0] == '[') { |
| 89 | return From(loader, descriptor, precise); |
| 90 | } else { |
| 91 | return Conflict(); |
| 92 | } |
| 93 | }; |
| 94 | |
Ian Rogers | 1bf8d4d | 2013-05-30 00:18:49 -0700 | [diff] [blame] | 95 | const RegType& RegTypeCache::RegTypeFromPrimitiveType(Primitive::Type prim_type) const { |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 96 | CHECK(RegTypeCache::primitive_initialized_); |
| 97 | switch (prim_type) { |
| 98 | case Primitive::kPrimBoolean: |
| 99 | return *BooleanType::GetInstance(); |
| 100 | case Primitive::kPrimByte: |
| 101 | return *ByteType::GetInstance(); |
| 102 | case Primitive::kPrimShort: |
| 103 | return *ShortType::GetInstance(); |
| 104 | case Primitive::kPrimChar: |
| 105 | return *CharType::GetInstance(); |
| 106 | case Primitive::kPrimInt: |
| 107 | return *IntegerType::GetInstance(); |
| 108 | case Primitive::kPrimLong: |
| 109 | return *LongLoType::GetInstance(); |
| 110 | case Primitive::kPrimFloat: |
| 111 | return *FloatType::GetInstance(); |
| 112 | case Primitive::kPrimDouble: |
| 113 | return *DoubleLoType::GetInstance(); |
| 114 | case Primitive::kPrimVoid: |
| 115 | default: |
| 116 | return *ConflictType::GetInstance(); |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 117 | } |
| 118 | } |
| 119 | |
Ian Rogers | 1bf8d4d | 2013-05-30 00:18:49 -0700 | [diff] [blame] | 120 | bool RegTypeCache::MatchDescriptor(size_t idx, const char* descriptor, bool precise) { |
Ian Rogers | 637c65b | 2013-05-31 11:46:00 -0700 | [diff] [blame] | 121 | RegType* entry = entries_[idx]; |
| 122 | if (entry->descriptor_ != descriptor) { |
| 123 | return false; |
| 124 | } |
Ian Rogers | 04f94f4 | 2013-06-10 15:09:26 -0700 | [diff] [blame^] | 125 | if (entry->HasClass()) { |
| 126 | return MatchingPrecisionForClass(entry, precise); |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 127 | } |
Ian Rogers | 04f94f4 | 2013-06-10 15:09:26 -0700 | [diff] [blame^] | 128 | // There is no notion of precise unresolved references, the precise information is just dropped |
| 129 | // on the floor. |
| 130 | DCHECK(entry->IsUnresolvedReference()); |
| 131 | return true; |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 132 | } |
| 133 | |
Ian Rogers | 1bf8d4d | 2013-05-30 00:18:49 -0700 | [diff] [blame] | 134 | mirror::Class* RegTypeCache::ResolveClass(const char* descriptor, mirror::ClassLoader* loader) { |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 135 | // Class was not found, must create new type. |
| 136 | // Try resolving class |
| 137 | ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); |
| 138 | mirror::Class* klass = NULL; |
| 139 | if (can_load_classes_) { |
Ian Rogers | 1bf8d4d | 2013-05-30 00:18:49 -0700 | [diff] [blame] | 140 | klass = class_linker->FindClass(descriptor, loader); |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 141 | } else { |
Ian Rogers | 1bf8d4d | 2013-05-30 00:18:49 -0700 | [diff] [blame] | 142 | klass = class_linker->LookupClass(descriptor, loader); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 143 | if (klass != NULL && !klass->IsLoaded()) { |
| 144 | // We found the class but without it being loaded its not safe for use. |
| 145 | klass = NULL; |
| 146 | } |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 147 | } |
| 148 | return klass; |
| 149 | } |
Ian Rogers | 1bf8d4d | 2013-05-30 00:18:49 -0700 | [diff] [blame] | 150 | |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 151 | void RegTypeCache::ClearException() { |
| 152 | if (can_load_classes_) { |
| 153 | DCHECK(Thread::Current()->IsExceptionPending()); |
| 154 | Thread::Current()->ClearException(); |
| 155 | } else { |
| 156 | DCHECK(!Thread::Current()->IsExceptionPending()); |
| 157 | } |
| 158 | } |
Sameer Abu Asal | 2c6de22 | 2013-05-02 17:38:59 -0700 | [diff] [blame] | 159 | |
Ian Rogers | 1bf8d4d | 2013-05-30 00:18:49 -0700 | [diff] [blame] | 160 | const RegType& RegTypeCache::From(mirror::ClassLoader* loader, const char* descriptor, |
| 161 | bool precise) { |
Sameer Abu Asal | 2c6de22 | 2013-05-02 17:38:59 -0700 | [diff] [blame] | 162 | // Try looking up the class in the cache first. |
| 163 | for (size_t i = primitive_count_; i < entries_.size(); i++) { |
| 164 | if (MatchDescriptor(i, descriptor, precise)) { |
| 165 | return *(entries_[i]); |
| 166 | } |
| 167 | } |
| 168 | // 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] | 169 | // Try resolving class. |
| 170 | mirror::Class* klass = ResolveClass(descriptor, loader); |
| 171 | if (klass != NULL) { |
| 172 | // 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] | 173 | // Class was not found, must create new type. |
Sameer Abu Asal | 9f57a86 | 2013-04-19 10:08:00 -0700 | [diff] [blame] | 174 | //To pass the verification, the type should be imprecise, |
| 175 | // instantiable or an interface with the precise type set to false. |
Sameer Abu Asal | 02c4223 | 2013-04-30 12:09:45 -0700 | [diff] [blame] | 176 | DCHECK(!precise || klass->IsInstantiable()); |
Sameer Abu Asal | 9f57a86 | 2013-04-19 10:08:00 -0700 | [diff] [blame] | 177 | // Create a precise type if: |
Sameer Abu Asal | 2c6de22 | 2013-05-02 17:38:59 -0700 | [diff] [blame] | 178 | // 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] | 179 | // 2- Precise Flag passed as true. |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 180 | RegType* entry; |
Sameer Abu Asal | 9f57a86 | 2013-04-19 10:08:00 -0700 | [diff] [blame] | 181 | // Create an imprecise type if we can't tell for a fact that it is precise. |
Ian Rogers | 04f94f4 | 2013-06-10 15:09:26 -0700 | [diff] [blame^] | 182 | if (klass->CannotBeAssignedFromOtherTypes() || precise) { |
Sameer Abu Asal | 02c4223 | 2013-04-30 12:09:45 -0700 | [diff] [blame] | 183 | DCHECK(!(klass->IsAbstract()) || klass->IsArrayClass()); |
| 184 | DCHECK(!klass->IsInterface()); |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 185 | entry = new PreciseReferenceType(klass, descriptor, entries_.size()); |
| 186 | } else { |
| 187 | entry = new ReferenceType(klass, descriptor, entries_.size()); |
| 188 | } |
| 189 | entries_.push_back(entry); |
| 190 | return *entry; |
| 191 | } else { // Class not resolved. |
| 192 | // We tried loading the class and failed, this might get an exception raised |
| 193 | // so we want to clear it before we go on. |
| 194 | ClearException(); |
Ian Rogers | 1bf8d4d | 2013-05-30 00:18:49 -0700 | [diff] [blame] | 195 | if (IsValidDescriptor(descriptor)) { |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 196 | RegType* entry = new UnresolvedReferenceType(descriptor, entries_.size()); |
| 197 | entries_.push_back(entry); |
| 198 | return *entry; |
| 199 | } else { |
| 200 | // The descriptor is broken return the unknown type as there's nothing sensible that |
| 201 | // could be done at runtime |
| 202 | return Conflict(); |
| 203 | } |
| 204 | } |
| 205 | } |
Ian Rogers | 1bf8d4d | 2013-05-30 00:18:49 -0700 | [diff] [blame] | 206 | |
Ian Rogers | 637c65b | 2013-05-31 11:46:00 -0700 | [diff] [blame] | 207 | const RegType& RegTypeCache::FromClass(const char* descriptor, mirror::Class* klass, bool precise) { |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 208 | if (klass->IsPrimitive()) { |
Ian Rogers | 04f94f4 | 2013-06-10 15:09:26 -0700 | [diff] [blame^] | 209 | // Note: precise isn't used for primitive classes. A char is assignable to an int. All |
| 210 | // primitive classes are final. |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 211 | return RegTypeFromPrimitiveType(klass->GetPrimitiveType()); |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 212 | } else { |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 213 | // Look for the reference in the list of entries to have. |
| 214 | for (size_t i = primitive_count_; i < entries_.size(); i++) { |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 215 | RegType* cur_entry = entries_[i]; |
Ian Rogers | 637c65b | 2013-05-31 11:46:00 -0700 | [diff] [blame] | 216 | if (cur_entry->klass_ == klass && MatchingPrecisionForClass(cur_entry, precise)) { |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 217 | return *cur_entry; |
| 218 | } |
| 219 | } |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 220 | // No reference to the class was found, create new reference. |
| 221 | RegType* entry; |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 222 | if (precise) { |
Ian Rogers | 637c65b | 2013-05-31 11:46:00 -0700 | [diff] [blame] | 223 | entry = new PreciseReferenceType(klass, descriptor, entries_.size()); |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 224 | } else { |
Ian Rogers | 637c65b | 2013-05-31 11:46:00 -0700 | [diff] [blame] | 225 | entry = new ReferenceType(klass, descriptor, entries_.size()); |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 226 | } |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 227 | entries_.push_back(entry); |
| 228 | return *entry; |
| 229 | } |
| 230 | } |
| 231 | |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 232 | RegTypeCache::~RegTypeCache() { |
| 233 | CHECK_LE(primitive_count_, entries_.size()); |
| 234 | // Delete only the non primitive types. |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 235 | if (entries_.size() == kNumPrimitives) { |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 236 | // All entries are primitive, nothing to delete. |
| 237 | return; |
| 238 | } |
| 239 | std::vector<RegType*>::iterator non_primitive_begin = entries_.begin(); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 240 | std::advance(non_primitive_begin, kNumPrimitives); |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 241 | STLDeleteContainerPointers(non_primitive_begin, entries_.end()); |
| 242 | } |
| 243 | |
| 244 | void RegTypeCache::ShutDown() { |
| 245 | if (RegTypeCache::primitive_initialized_) { |
| 246 | UndefinedType::Destroy(); |
| 247 | ConflictType::Destroy(); |
| 248 | BooleanType::Destroy(); |
| 249 | ByteType::Destroy(); |
| 250 | ShortType::Destroy(); |
| 251 | CharType::Destroy(); |
| 252 | IntegerType::Destroy(); |
| 253 | LongLoType::Destroy(); |
| 254 | LongHiType::Destroy(); |
Ian Rogers | 25ae7eb | 2013-04-18 16:06:05 -0700 | [diff] [blame] | 255 | FloatType::Destroy(); |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 256 | DoubleLoType::Destroy(); |
| 257 | DoubleHiType::Destroy(); |
Ian Rogers | 62d6c77 | 2013-02-27 08:32:07 -0800 | [diff] [blame] | 258 | RegTypeCache::primitive_initialized_ = false; |
| 259 | RegTypeCache::primitive_count_ = 0; |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 260 | } |
| 261 | } |
| 262 | |
| 263 | void RegTypeCache::CreatePrimitiveTypes() { |
Ian Rogers | 33e9566 | 2013-05-20 20:29:14 -0700 | [diff] [blame] | 264 | CreatePrimitiveTypeInstance<UndefinedType>(""); |
| 265 | CreatePrimitiveTypeInstance<ConflictType>(""); |
| 266 | CreatePrimitiveTypeInstance<BooleanType>("Z"); |
| 267 | CreatePrimitiveTypeInstance<ByteType>("B"); |
| 268 | CreatePrimitiveTypeInstance<ShortType>("S"); |
| 269 | CreatePrimitiveTypeInstance<CharType>("C"); |
| 270 | CreatePrimitiveTypeInstance<IntegerType>("I"); |
| 271 | CreatePrimitiveTypeInstance<LongLoType>("J"); |
| 272 | CreatePrimitiveTypeInstance<LongHiType>("J"); |
| 273 | CreatePrimitiveTypeInstance<FloatType>("F"); |
| 274 | CreatePrimitiveTypeInstance<DoubleLoType>("D"); |
| 275 | CreatePrimitiveTypeInstance<DoubleHiType>("D"); |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 276 | } |
| 277 | |
Ian Rogers | 529781d | 2012-07-23 17:24:29 -0700 | [diff] [blame] | 278 | const RegType& RegTypeCache::FromUnresolvedMerge(const RegType& left, const RegType& right) { |
| 279 | std::set<uint16_t> types; |
| 280 | if (left.IsUnresolvedMergedReference()) { |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 281 | RegType& non_const(const_cast<RegType&>(left)); |
| 282 | types = (down_cast<UnresolvedMergedType*>(&non_const))->GetMergedTypes(); |
Ian Rogers | 529781d | 2012-07-23 17:24:29 -0700 | [diff] [blame] | 283 | } else { |
| 284 | types.insert(left.GetId()); |
| 285 | } |
| 286 | if (right.IsUnresolvedMergedReference()) { |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 287 | RegType& non_const(const_cast<RegType&>(right)); |
| 288 | std::set<uint16_t> right_types = (down_cast<UnresolvedMergedType*>(&non_const))->GetMergedTypes(); |
Ian Rogers | 529781d | 2012-07-23 17:24:29 -0700 | [diff] [blame] | 289 | types.insert(right_types.begin(), right_types.end()); |
| 290 | } else { |
| 291 | types.insert(right.GetId()); |
| 292 | } |
| 293 | // Check if entry already exists. |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 294 | for (size_t i = primitive_count_; i < entries_.size(); i++) { |
Ian Rogers | 529781d | 2012-07-23 17:24:29 -0700 | [diff] [blame] | 295 | RegType* cur_entry = entries_[i]; |
| 296 | if (cur_entry->IsUnresolvedMergedReference()) { |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 297 | std::set<uint16_t> cur_entry_types = |
| 298 | (down_cast<UnresolvedMergedType*>(cur_entry))->GetMergedTypes(); |
Ian Rogers | 529781d | 2012-07-23 17:24:29 -0700 | [diff] [blame] | 299 | if (cur_entry_types == types) { |
| 300 | return *cur_entry; |
| 301 | } |
| 302 | } |
| 303 | } |
| 304 | // Create entry. |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 305 | RegType* entry = new UnresolvedMergedType(left.GetId(), right.GetId(), this, entries_.size()); |
Ian Rogers | 529781d | 2012-07-23 17:24:29 -0700 | [diff] [blame] | 306 | entries_.push_back(entry); |
Ian Rogers | 1bf8d4d | 2013-05-30 00:18:49 -0700 | [diff] [blame] | 307 | if (kIsDebugBuild) { |
| 308 | UnresolvedMergedType* tmp_entry = down_cast<UnresolvedMergedType*>(entry); |
| 309 | std::set<uint16_t> check_types = tmp_entry->GetMergedTypes(); |
| 310 | CHECK(check_types == types); |
| 311 | } |
Ian Rogers | 529781d | 2012-07-23 17:24:29 -0700 | [diff] [blame] | 312 | return *entry; |
| 313 | } |
Ian Rogers | 1bf8d4d | 2013-05-30 00:18:49 -0700 | [diff] [blame] | 314 | |
Ian Rogers | 529781d | 2012-07-23 17:24:29 -0700 | [diff] [blame] | 315 | const RegType& RegTypeCache::FromUnresolvedSuperClass(const RegType& child) { |
| 316 | // Check if entry already exists. |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 317 | for (size_t i = primitive_count_; i < entries_.size(); i++) { |
| 318 | RegType* cur_entry = entries_[i]; |
| 319 | if (cur_entry->IsUnresolvedSuperClass()) { |
| 320 | UnresolvedSuperClass* tmp_entry = |
| 321 | down_cast<UnresolvedSuperClass*>(cur_entry); |
| 322 | uint16_t unresolved_super_child_id = |
| 323 | tmp_entry->GetUnresolvedSuperClassChildId(); |
| 324 | if (unresolved_super_child_id == child.GetId()) { |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 325 | return *cur_entry; |
| 326 | } |
| 327 | } |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 328 | } |
| 329 | RegType* entry = new UnresolvedSuperClass(child.GetId(), this, entries_.size()); |
| 330 | entries_.push_back(entry); |
| 331 | return *entry; |
| 332 | } |
Ian Rogers | 1bf8d4d | 2013-05-30 00:18:49 -0700 | [diff] [blame] | 333 | |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 334 | const RegType& RegTypeCache::Uninitialized(const RegType& type, uint32_t allocation_pc) { |
| 335 | RegType* entry = NULL; |
| 336 | RegType* cur_entry = NULL; |
Ian Rogers | 637c65b | 2013-05-31 11:46:00 -0700 | [diff] [blame] | 337 | const std::string& descriptor(type.GetDescriptor()); |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 338 | if (type.IsUnresolvedTypes()) { |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 339 | for (size_t i = primitive_count_; i < entries_.size(); i++) { |
| 340 | cur_entry = entries_[i]; |
| 341 | if (cur_entry->IsUnresolvedAndUninitializedReference() && |
| 342 | down_cast<UnresolvedUninitializedRefType*>(cur_entry)->GetAllocationPc() == allocation_pc && |
| 343 | (cur_entry->GetDescriptor() == descriptor)) { |
| 344 | return *cur_entry; |
| 345 | } |
| 346 | } |
Ian Rogers | 637c65b | 2013-05-31 11:46:00 -0700 | [diff] [blame] | 347 | entry = new UnresolvedUninitializedRefType(descriptor, allocation_pc, entries_.size()); |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 348 | } else { |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 349 | mirror::Class* klass = type.GetClass(); |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 350 | for (size_t i = primitive_count_; i < entries_.size(); i++) { |
| 351 | cur_entry = entries_[i]; |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 352 | if (cur_entry->IsUninitializedReference() && |
Ian Rogers | 1bf8d4d | 2013-05-30 00:18:49 -0700 | [diff] [blame] | 353 | down_cast<UninitializedReferenceType*>(cur_entry) |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 354 | ->GetAllocationPc() == allocation_pc && |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 355 | cur_entry->GetClass() == klass) { |
| 356 | return *cur_entry; |
| 357 | } |
| 358 | } |
Ian Rogers | 637c65b | 2013-05-31 11:46:00 -0700 | [diff] [blame] | 359 | entry = new UninitializedReferenceType(klass, descriptor, allocation_pc, entries_.size()); |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 360 | } |
| 361 | entries_.push_back(entry); |
| 362 | return *entry; |
| 363 | } |
Ian Rogers | 1bf8d4d | 2013-05-30 00:18:49 -0700 | [diff] [blame] | 364 | |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 365 | const RegType& RegTypeCache::FromUninitialized(const RegType& uninit_type) { |
| 366 | RegType* entry; |
Sameer Abu Asal | 9f57a86 | 2013-04-19 10:08:00 -0700 | [diff] [blame] | 367 | |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 368 | if (uninit_type.IsUnresolvedTypes()) { |
Ian Rogers | 1bf8d4d | 2013-05-30 00:18:49 -0700 | [diff] [blame] | 369 | const std::string& descriptor(uninit_type.GetDescriptor()); |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 370 | for (size_t i = primitive_count_; i < entries_.size(); i++) { |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 371 | RegType* cur_entry = entries_[i]; |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 372 | if (cur_entry->IsUnresolvedReference() && |
| 373 | cur_entry->GetDescriptor() == descriptor) { |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 374 | return *cur_entry; |
| 375 | } |
| 376 | } |
Ian Rogers | 1bf8d4d | 2013-05-30 00:18:49 -0700 | [diff] [blame] | 377 | entry = new UnresolvedReferenceType(descriptor.c_str(), entries_.size()); |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 378 | } else { |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 379 | mirror::Class* klass = uninit_type.GetClass(); |
Ian Rogers | 04f94f4 | 2013-06-10 15:09:26 -0700 | [diff] [blame^] | 380 | DCHECK(!klass->IsArrayClass()); |
Sameer Abu Asal | 9f57a86 | 2013-04-19 10:08:00 -0700 | [diff] [blame] | 381 | if(uninit_type.IsUninitializedThisReference() && !klass->IsFinal()) { |
Ian Rogers | 04f94f4 | 2013-06-10 15:09:26 -0700 | [diff] [blame^] | 382 | // For uninitialized "this reference" look for reference types that are not precise. |
Sameer Abu Asal | 9f57a86 | 2013-04-19 10:08:00 -0700 | [diff] [blame] | 383 | for (size_t i = primitive_count_; i < entries_.size(); i++) { |
| 384 | RegType* cur_entry = entries_[i]; |
| 385 | if (cur_entry->IsReference() && cur_entry->GetClass() == klass) { |
| 386 | return *cur_entry; |
| 387 | } |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 388 | } |
Ian Rogers | 1bf8d4d | 2013-05-30 00:18:49 -0700 | [diff] [blame] | 389 | entry = new ReferenceType(klass, "", entries_.size()); |
Sameer Abu Asal | 9f57a86 | 2013-04-19 10:08:00 -0700 | [diff] [blame] | 390 | } else { |
Ian Rogers | 04f94f4 | 2013-06-10 15:09:26 -0700 | [diff] [blame^] | 391 | if (klass->IsFinal()) { |
| 392 | if (klass->IsInstantiable()) { |
| 393 | for (size_t i = primitive_count_; i < entries_.size(); i++) { |
| 394 | RegType* cur_entry = entries_[i]; |
| 395 | if (cur_entry->IsPreciseReference() && cur_entry->GetClass() == klass) { |
| 396 | return *cur_entry; |
Sameer Abu Asal | 02c4223 | 2013-04-30 12:09:45 -0700 | [diff] [blame] | 397 | } |
Sameer Abu Asal | 02c4223 | 2013-04-30 12:09:45 -0700 | [diff] [blame] | 398 | } |
Ian Rogers | 04f94f4 | 2013-06-10 15:09:26 -0700 | [diff] [blame^] | 399 | // Precise type was not found , create one ! |
| 400 | entry = new PreciseReferenceType(klass, "", entries_.size()); |
| 401 | } else { |
| 402 | return Conflict(); |
| 403 | } |
Sameer Abu Asal | 02c4223 | 2013-04-30 12:09:45 -0700 | [diff] [blame] | 404 | } else { |
Ian Rogers | 04f94f4 | 2013-06-10 15:09:26 -0700 | [diff] [blame^] | 405 | // Not a final class, create an imprecise reference. Look up if we have it in the cache |
| 406 | // first. |
Sameer Abu Asal | 02c4223 | 2013-04-30 12:09:45 -0700 | [diff] [blame] | 407 | for (size_t i = primitive_count_; i < entries_.size(); i++) { |
| 408 | RegType* cur_entry = entries_[i]; |
| 409 | if (cur_entry->IsReference() && !(cur_entry->IsPrecise()) && |
| 410 | cur_entry->GetClass() == klass) { |
| 411 | return *cur_entry; |
| 412 | } |
Sameer Abu Asal | 9f57a86 | 2013-04-19 10:08:00 -0700 | [diff] [blame] | 413 | } |
Ian Rogers | 1bf8d4d | 2013-05-30 00:18:49 -0700 | [diff] [blame] | 414 | entry = new ReferenceType(klass, "", entries_.size()); |
Sameer Abu Asal | 9f57a86 | 2013-04-19 10:08:00 -0700 | [diff] [blame] | 415 | } |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 416 | } |
Sameer Abu Asal | 9f57a86 | 2013-04-19 10:08:00 -0700 | [diff] [blame] | 417 | } |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 418 | entries_.push_back(entry); |
| 419 | return *entry; |
| 420 | } |
Ian Rogers | 1bf8d4d | 2013-05-30 00:18:49 -0700 | [diff] [blame] | 421 | |
| 422 | const RegType& RegTypeCache::ByteConstant() { |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 423 | return FromCat1Const(std::numeric_limits<jbyte>::min(), false); |
| 424 | } |
Ian Rogers | 1bf8d4d | 2013-05-30 00:18:49 -0700 | [diff] [blame] | 425 | |
| 426 | const RegType& RegTypeCache::ShortConstant() { |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 427 | return FromCat1Const(std::numeric_limits<jshort>::min(), false); |
| 428 | } |
Ian Rogers | 1bf8d4d | 2013-05-30 00:18:49 -0700 | [diff] [blame] | 429 | |
| 430 | const RegType& RegTypeCache::IntConstant() { |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 431 | return FromCat1Const(std::numeric_limits<jint>::max(), false); |
| 432 | } |
Ian Rogers | 1bf8d4d | 2013-05-30 00:18:49 -0700 | [diff] [blame] | 433 | |
Ian Rogers | ad0b3a3 | 2012-04-16 14:50:24 -0700 | [diff] [blame] | 434 | const RegType& RegTypeCache::UninitializedThisArgument(const RegType& type) { |
Ian Rogers | ad0b3a3 | 2012-04-16 14:50:24 -0700 | [diff] [blame] | 435 | RegType* entry; |
Ian Rogers | 637c65b | 2013-05-31 11:46:00 -0700 | [diff] [blame] | 436 | const std::string& descriptor(type.GetDescriptor()); |
Ian Rogers | ad0b3a3 | 2012-04-16 14:50:24 -0700 | [diff] [blame] | 437 | if (type.IsUnresolvedTypes()) { |
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 | ad0b3a3 | 2012-04-16 14:50:24 -0700 | [diff] [blame] | 439 | RegType* cur_entry = entries_[i]; |
| 440 | if (cur_entry->IsUnresolvedAndUninitializedThisReference() && |
| 441 | cur_entry->GetDescriptor() == descriptor) { |
| 442 | return *cur_entry; |
| 443 | } |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 444 | } |
Ian Rogers | 1bf8d4d | 2013-05-30 00:18:49 -0700 | [diff] [blame] | 445 | entry = new UnresolvedUninitializedThisRefType(descriptor, entries_.size()); |
Ian Rogers | ad0b3a3 | 2012-04-16 14:50:24 -0700 | [diff] [blame] | 446 | } else { |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 447 | mirror::Class* klass = type.GetClass(); |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 448 | for (size_t i = primitive_count_; i < entries_.size(); i++) { |
Ian Rogers | ad0b3a3 | 2012-04-16 14:50:24 -0700 | [diff] [blame] | 449 | RegType* cur_entry = entries_[i]; |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 450 | if (cur_entry->IsUninitializedThisReference() && |
| 451 | cur_entry->GetClass() == klass) { |
Ian Rogers | ad0b3a3 | 2012-04-16 14:50:24 -0700 | [diff] [blame] | 452 | return *cur_entry; |
| 453 | } |
| 454 | } |
Ian Rogers | 637c65b | 2013-05-31 11:46:00 -0700 | [diff] [blame] | 455 | entry = new UninitializedThisReferenceType(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 | 1bf8d4d | 2013-05-30 00:18:49 -0700 | [diff] [blame] | 460 | |
Ian Rogers | 2bcb4a4 | 2012-11-08 10:39:18 -0800 | [diff] [blame] | 461 | const RegType& RegTypeCache::FromCat1Const(int32_t value, bool precise) { |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 462 | for (size_t i = primitive_count_; i < entries_.size(); i++) { |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 463 | RegType* cur_entry = entries_[i]; |
Ian Rogers | 637c65b | 2013-05-31 11:46:00 -0700 | [diff] [blame] | 464 | if (cur_entry->klass_ == NULL && cur_entry->IsConstant() && |
| 465 | cur_entry->IsPreciseConstant() == precise && |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 466 | (down_cast<ConstantType*>(cur_entry))->ConstantValue() == value) { |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 467 | return *cur_entry; |
| 468 | } |
| 469 | } |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 470 | RegType* entry; |
| 471 | if (precise) { |
| 472 | entry = new PreciseConstType(value, entries_.size()); |
| 473 | } else { |
| 474 | entry = new ImpreciseConstType(value, entries_.size()); |
| 475 | } |
Ian Rogers | 2bcb4a4 | 2012-11-08 10:39:18 -0800 | [diff] [blame] | 476 | entries_.push_back(entry); |
| 477 | return *entry; |
| 478 | } |
| 479 | |
| 480 | const RegType& RegTypeCache::FromCat2ConstLo(int32_t value, bool precise) { |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 481 | for (size_t i = primitive_count_; i < entries_.size(); i++) { |
Ian Rogers | 2bcb4a4 | 2012-11-08 10:39:18 -0800 | [diff] [blame] | 482 | RegType* cur_entry = entries_[i]; |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 483 | if (cur_entry->IsConstantLo() && (cur_entry->IsPrecise() == precise) && |
| 484 | (down_cast<ConstantType*>(cur_entry))->ConstantValueLo() == value) { |
Ian Rogers | 2bcb4a4 | 2012-11-08 10:39:18 -0800 | [diff] [blame] | 485 | return *cur_entry; |
| 486 | } |
| 487 | } |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 488 | RegType* entry; |
| 489 | if (precise) { |
| 490 | entry = new PreciseConstLoType(value, entries_.size()); |
| 491 | } else { |
| 492 | entry = new ImpreciseConstLoType(value, entries_.size()); |
| 493 | } |
Ian Rogers | 2bcb4a4 | 2012-11-08 10:39:18 -0800 | [diff] [blame] | 494 | entries_.push_back(entry); |
| 495 | return *entry; |
| 496 | } |
| 497 | |
| 498 | const RegType& RegTypeCache::FromCat2ConstHi(int32_t value, bool precise) { |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 499 | for (size_t i = primitive_count_; i < entries_.size(); i++) { |
Ian Rogers | 2bcb4a4 | 2012-11-08 10:39:18 -0800 | [diff] [blame] | 500 | RegType* cur_entry = entries_[i]; |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 501 | if (cur_entry->IsConstantHi() && (cur_entry->IsPrecise() == precise) && |
| 502 | (down_cast<ConstantType*>(cur_entry))->ConstantValueHi() == value) { |
Ian Rogers | 2bcb4a4 | 2012-11-08 10:39:18 -0800 | [diff] [blame] | 503 | return *cur_entry; |
| 504 | } |
| 505 | } |
Sameer Abu Asal | 51a5fb7 | 2013-02-19 14:25:01 -0800 | [diff] [blame] | 506 | RegType* entry; |
| 507 | if (precise) { |
| 508 | entry = new PreciseConstHiType(value, entries_.size()); |
| 509 | } else { |
| 510 | entry = new ImpreciseConstHiType(value, entries_.size()); |
| 511 | } |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 512 | entries_.push_back(entry); |
| 513 | return *entry; |
| 514 | } |
| 515 | |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 516 | const RegType& RegTypeCache::GetComponentType(const RegType& array, mirror::ClassLoader* loader) { |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 517 | CHECK(array.IsArrayTypes()); |
| 518 | if (array.IsUnresolvedTypes()) { |
Ian Rogers | 1bf8d4d | 2013-05-30 00:18:49 -0700 | [diff] [blame] | 519 | const std::string& descriptor(array.GetDescriptor()); |
| 520 | const std::string component(descriptor.substr(1, descriptor.size() - 1)); |
Ian Rogers | b490357 | 2012-10-11 11:52:56 -0700 | [diff] [blame] | 521 | return FromDescriptor(loader, component.c_str(), false); |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 522 | } else { |
Ian Rogers | 2dd0e2c | 2013-01-24 12:42:14 -0800 | [diff] [blame] | 523 | mirror::Class* klass = array.GetClass()->GetComponentType(); |
Ian Rogers | 04f94f4 | 2013-06-10 15:09:26 -0700 | [diff] [blame^] | 524 | return FromClass(ClassHelper(klass).GetDescriptor(), klass, |
| 525 | klass->CannotBeAssignedFromOtherTypes()); |
Ian Rogers | b490357 | 2012-10-11 11:52:56 -0700 | [diff] [blame] | 526 | } |
| 527 | } |
| 528 | |
| 529 | void RegTypeCache::Dump(std::ostream& os) { |
Ian Rogers | b490357 | 2012-10-11 11:52:56 -0700 | [diff] [blame] | 530 | for (size_t i = 0; i < entries_.size(); i++) { |
| 531 | RegType* cur_entry = entries_[i]; |
| 532 | if (cur_entry != NULL) { |
Ian Rogers | 2bcb4a4 | 2012-11-08 10:39:18 -0800 | [diff] [blame] | 533 | os << i << ": " << cur_entry->Dump() << "\n"; |
Ian Rogers | b490357 | 2012-10-11 11:52:56 -0700 | [diff] [blame] | 534 | } |
Ian Rogers | 776ac1f | 2012-04-13 23:36:36 -0700 | [diff] [blame] | 535 | } |
| 536 | } |
| 537 | |
Elliott Hughes | a21039c | 2012-06-21 12:09:25 -0700 | [diff] [blame] | 538 | } // namespace verifier |
| 539 | } // namespace art |