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