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 17 #ifndef ART_RUNTIME_VERIFIER_REG_TYPE_CACHE_INL_H_ 18 #define ART_RUNTIME_VERIFIER_REG_TYPE_CACHE_INL_H_ 19 20 #include "class_linker.h" 21 #include "class_root.h" 22 #include "mirror/class-inl.h" 23 #include "mirror/method_handle_impl.h" 24 #include "mirror/method_type.h" 25 #include "mirror/string.h" 26 #include "mirror/throwable.h" 27 #include "reg_type.h" 28 #include "reg_type_cache.h" 29 30 namespace art { 31 namespace verifier { 32 33 inline const art::verifier::RegType& RegTypeCache::GetFromId(uint16_t id) const { 34 DCHECK_LT(id, entries_.size()); 35 const RegType* result = entries_[id]; 36 DCHECK(result != nullptr); 37 return *result; 38 } 39 40 inline const ConstantType& RegTypeCache::FromCat1Const(int32_t value, bool precise) { 41 // We only expect 0 to be a precise constant. 42 DCHECK(value != 0 || precise); 43 if (precise && (value >= kMinSmallConstant) && (value <= kMaxSmallConstant)) { 44 return *small_precise_constants_[value - kMinSmallConstant]; 45 } 46 return FromCat1NonSmallConstant(value, precise); 47 } 48 49 inline const BooleanType& RegTypeCache::Boolean() { 50 return *BooleanType::GetInstance(); 51 } 52 inline const ByteType& RegTypeCache::Byte() { 53 return *ByteType::GetInstance(); 54 } 55 inline const CharType& RegTypeCache::Char() { 56 return *CharType::GetInstance(); 57 } 58 inline const ShortType& RegTypeCache::Short() { 59 return *ShortType::GetInstance(); 60 } 61 inline const IntegerType& RegTypeCache::Integer() { 62 return *IntegerType::GetInstance(); 63 } 64 inline const FloatType& RegTypeCache::Float() { 65 return *FloatType::GetInstance(); 66 } 67 inline const LongLoType& RegTypeCache::LongLo() { 68 return *LongLoType::GetInstance(); 69 } 70 inline const LongHiType& RegTypeCache::LongHi() { 71 return *LongHiType::GetInstance(); 72 } 73 inline const DoubleLoType& RegTypeCache::DoubleLo() { 74 return *DoubleLoType::GetInstance(); 75 } 76 inline const DoubleHiType& RegTypeCache::DoubleHi() { 77 return *DoubleHiType::GetInstance(); 78 } 79 inline const UndefinedType& RegTypeCache::Undefined() { 80 return *UndefinedType::GetInstance(); 81 } 82 inline const ConflictType& RegTypeCache::Conflict() { 83 return *ConflictType::GetInstance(); 84 } 85 inline const NullType& RegTypeCache::Null() { 86 return *NullType::GetInstance(); 87 } 88 89 inline const ImpreciseConstType& RegTypeCache::ByteConstant() { 90 const ConstantType& result = FromCat1Const(std::numeric_limits<jbyte>::min(), false); 91 DCHECK(result.IsImpreciseConstant()); 92 return *down_cast<const ImpreciseConstType*>(&result); 93 } 94 95 inline const ImpreciseConstType& RegTypeCache::CharConstant() { 96 int32_t jchar_max = static_cast<int32_t>(std::numeric_limits<jchar>::max()); 97 const ConstantType& result = FromCat1Const(jchar_max, false); 98 DCHECK(result.IsImpreciseConstant()); 99 return *down_cast<const ImpreciseConstType*>(&result); 100 } 101 102 inline const ImpreciseConstType& RegTypeCache::ShortConstant() { 103 const ConstantType& result = FromCat1Const(std::numeric_limits<jshort>::min(), false); 104 DCHECK(result.IsImpreciseConstant()); 105 return *down_cast<const ImpreciseConstType*>(&result); 106 } 107 108 inline const ImpreciseConstType& RegTypeCache::IntConstant() { 109 const ConstantType& result = FromCat1Const(std::numeric_limits<jint>::max(), false); 110 DCHECK(result.IsImpreciseConstant()); 111 return *down_cast<const ImpreciseConstType*>(&result); 112 } 113 114 inline const ImpreciseConstType& RegTypeCache::PosByteConstant() { 115 const ConstantType& result = FromCat1Const(std::numeric_limits<jbyte>::max(), false); 116 DCHECK(result.IsImpreciseConstant()); 117 return *down_cast<const ImpreciseConstType*>(&result); 118 } 119 120 inline const ImpreciseConstType& RegTypeCache::PosShortConstant() { 121 const ConstantType& result = FromCat1Const(std::numeric_limits<jshort>::max(), false); 122 DCHECK(result.IsImpreciseConstant()); 123 return *down_cast<const ImpreciseConstType*>(&result); 124 } 125 126 inline const PreciseReferenceType& RegTypeCache::JavaLangClass() { 127 const RegType* result = &FromClass("Ljava/lang/Class;", 128 GetClassRoot<mirror::Class>(), 129 /* precise= */ true); 130 DCHECK(result->IsPreciseReference()); 131 return *down_cast<const PreciseReferenceType*>(result); 132 } 133 134 inline const PreciseReferenceType& RegTypeCache::JavaLangString() { 135 // String is final and therefore always precise. 136 const RegType* result = &FromClass("Ljava/lang/String;", 137 GetClassRoot<mirror::String>(), 138 /* precise= */ true); 139 DCHECK(result->IsPreciseReference()); 140 return *down_cast<const PreciseReferenceType*>(result); 141 } 142 143 inline const PreciseReferenceType& RegTypeCache::JavaLangInvokeMethodHandle() { 144 const RegType* result = &FromClass("Ljava/lang/invoke/MethodHandle;", 145 GetClassRoot<mirror::MethodHandle>(), 146 /* precise= */ true); 147 DCHECK(result->IsPreciseReference()); 148 return *down_cast<const PreciseReferenceType*>(result); 149 } 150 151 inline const PreciseReferenceType& RegTypeCache::JavaLangInvokeMethodType() { 152 const RegType* result = &FromClass("Ljava/lang/invoke/MethodType;", 153 GetClassRoot<mirror::MethodType>(), 154 /* precise= */ true); 155 DCHECK(result->IsPreciseReference()); 156 return *down_cast<const PreciseReferenceType*>(result); 157 } 158 159 inline const RegType& RegTypeCache::JavaLangThrowable(bool precise) { 160 const RegType* result = &FromClass("Ljava/lang/Throwable;", 161 GetClassRoot<mirror::Throwable>(), 162 precise); 163 if (precise) { 164 DCHECK(result->IsPreciseReference()); 165 return *down_cast<const PreciseReferenceType*>(result); 166 } else { 167 DCHECK(result->IsReference()); 168 return *down_cast<const ReferenceType*>(result); 169 } 170 } 171 172 inline const RegType& RegTypeCache::JavaLangObject(bool precise) { 173 const RegType* result = &FromClass("Ljava/lang/Object;", GetClassRoot<mirror::Object>(), precise); 174 if (precise) { 175 DCHECK(result->IsPreciseReference()); 176 return *down_cast<const PreciseReferenceType*>(result); 177 } else { 178 DCHECK(result->IsReference()); 179 return *down_cast<const ReferenceType*>(result); 180 } 181 } 182 183 template <class RegTypeType> 184 inline RegTypeType& RegTypeCache::AddEntry(RegTypeType* new_entry) { 185 DCHECK(new_entry != nullptr); 186 entries_.push_back(new_entry); 187 if (new_entry->HasClass()) { 188 ObjPtr<mirror::Class> klass = new_entry->GetClass(); 189 DCHECK(!klass->IsPrimitive()); 190 klass_entries_.push_back(std::make_pair(GcRoot<mirror::Class>(klass), new_entry)); 191 } 192 return *new_entry; 193 } 194 195 } // namespace verifier 196 } // namespace art 197 #endif // ART_RUNTIME_VERIFIER_REG_TYPE_CACHE_INL_H_ 198
