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