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
GetFromId(uint16_t id)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
FromCat1Const(int32_t value,bool precise)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
Boolean()46 inline const BooleanType& RegTypeCache::Boolean() {
47 return *BooleanType::GetInstance();
48 }
Byte()49 inline const ByteType& RegTypeCache::Byte() {
50 return *ByteType::GetInstance();
51 }
Char()52 inline const CharType& RegTypeCache::Char() {
53 return *CharType::GetInstance();
54 }
Short()55 inline const ShortType& RegTypeCache::Short() {
56 return *ShortType::GetInstance();
57 }
Integer()58 inline const IntegerType& RegTypeCache::Integer() {
59 return *IntegerType::GetInstance();
60 }
Float()61 inline const FloatType& RegTypeCache::Float() {
62 return *FloatType::GetInstance();
63 }
LongLo()64 inline const LongLoType& RegTypeCache::LongLo() {
65 return *LongLoType::GetInstance();
66 }
LongHi()67 inline const LongHiType& RegTypeCache::LongHi() {
68 return *LongHiType::GetInstance();
69 }
DoubleLo()70 inline const DoubleLoType& RegTypeCache::DoubleLo() {
71 return *DoubleLoType::GetInstance();
72 }
DoubleHi()73 inline const DoubleHiType& RegTypeCache::DoubleHi() {
74 return *DoubleHiType::GetInstance();
75 }
Undefined()76 inline const UndefinedType& RegTypeCache::Undefined() {
77 return *UndefinedType::GetInstance();
78 }
Conflict()79 inline const ConflictType& RegTypeCache::Conflict() {
80 return *ConflictType::GetInstance();
81 }
82
ByteConstant()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
CharConstant()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
ShortConstant()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
IntConstant()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
PosByteConstant()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
PosShortConstant()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
JavaLangClass()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
JavaLangString()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
JavaLangThrowable(bool precise)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
JavaLangObject(bool precise)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>
AddEntry(RegTypeType * new_entry)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