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
ByteConstant()46 inline const ImpreciseConstType& RegTypeCache::ByteConstant() {
47 const ConstantType& result = FromCat1Const(std::numeric_limits<jbyte>::min(), false);
48 DCHECK(result.IsImpreciseConstant());
49 return *down_cast<const ImpreciseConstType*>(&result);
50 }
51
CharConstant()52 inline const ImpreciseConstType& RegTypeCache::CharConstant() {
53 int32_t jchar_max = static_cast<int32_t>(std::numeric_limits<jchar>::max());
54 const ConstantType& result = FromCat1Const(jchar_max, false);
55 DCHECK(result.IsImpreciseConstant());
56 return *down_cast<const ImpreciseConstType*>(&result);
57 }
58
ShortConstant()59 inline const ImpreciseConstType& RegTypeCache::ShortConstant() {
60 const ConstantType& result = FromCat1Const(std::numeric_limits<jshort>::min(), false);
61 DCHECK(result.IsImpreciseConstant());
62 return *down_cast<const ImpreciseConstType*>(&result);
63 }
64
IntConstant()65 inline const ImpreciseConstType& RegTypeCache::IntConstant() {
66 const ConstantType& result = FromCat1Const(std::numeric_limits<jint>::max(), false);
67 DCHECK(result.IsImpreciseConstant());
68 return *down_cast<const ImpreciseConstType*>(&result);
69 }
70
PosByteConstant()71 inline const ImpreciseConstType& RegTypeCache::PosByteConstant() {
72 const ConstantType& result = FromCat1Const(std::numeric_limits<jbyte>::max(), false);
73 DCHECK(result.IsImpreciseConstant());
74 return *down_cast<const ImpreciseConstType*>(&result);
75 }
76
PosShortConstant()77 inline const ImpreciseConstType& RegTypeCache::PosShortConstant() {
78 const ConstantType& result = FromCat1Const(std::numeric_limits<jshort>::max(), false);
79 DCHECK(result.IsImpreciseConstant());
80 return *down_cast<const ImpreciseConstType*>(&result);
81 }
82
JavaLangClass()83 inline const PreciseReferenceType& RegTypeCache::JavaLangClass() {
84 const RegType* result = &FromClass("Ljava/lang/Class;", mirror::Class::GetJavaLangClass(), true);
85 DCHECK(result->IsPreciseReference());
86 return *down_cast<const PreciseReferenceType*>(result);
87 }
88
JavaLangString()89 inline const PreciseReferenceType& RegTypeCache::JavaLangString() {
90 // String is final and therefore always precise.
91 const RegType* result = &FromClass("Ljava/lang/String;", mirror::String::GetJavaLangString(),
92 true);
93 DCHECK(result->IsPreciseReference());
94 return *down_cast<const PreciseReferenceType*>(result);
95 }
96
JavaLangThrowable(bool precise)97 inline const RegType& RegTypeCache::JavaLangThrowable(bool precise) {
98 const RegType* result = &FromClass("Ljava/lang/Throwable;",
99 mirror::Throwable::GetJavaLangThrowable(), precise);
100 if (precise) {
101 DCHECK(result->IsPreciseReference());
102 return *down_cast<const PreciseReferenceType*>(result);
103 } else {
104 DCHECK(result->IsReference());
105 return *down_cast<const ReferenceType*>(result);
106 }
107 }
108
JavaLangObject(bool precise)109 inline const RegType& RegTypeCache::JavaLangObject(bool precise) {
110 const RegType* result = &FromClass("Ljava/lang/Object;",
111 mirror::Class::GetJavaLangClass()->GetSuperClass(), precise);
112 if (precise) {
113 DCHECK(result->IsPreciseReference());
114 return *down_cast<const PreciseReferenceType*>(result);
115 } else {
116 DCHECK(result->IsReference());
117 return *down_cast<const ReferenceType*>(result);
118 }
119 }
120
121 } // namespace verifier
122 } // namespace art
123 #endif // ART_RUNTIME_VERIFIER_REG_TYPE_CACHE_INL_H_
124