Narayan Kamath | 208f857 | 2016-08-03 12:46:58 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2016 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_METHOD_HANDLES_INL_H_ |
| 18 | #define ART_RUNTIME_METHOD_HANDLES_INL_H_ |
| 19 | |
| 20 | #include "method_handles.h" |
| 21 | |
| 22 | #include "common_throws.h" |
David Sehr | 9e734c7 | 2018-01-04 17:56:19 -0800 | [diff] [blame] | 23 | #include "dex/dex_instruction.h" |
Narayan Kamath | 208f857 | 2016-08-03 12:46:58 +0100 | [diff] [blame] | 24 | #include "interpreter/interpreter_common.h" |
| 25 | #include "jvalue.h" |
| 26 | #include "mirror/class.h" |
| 27 | #include "mirror/method_type.h" |
| 28 | #include "mirror/object.h" |
| 29 | #include "reflection.h" |
| 30 | #include "stack.h" |
| 31 | |
| 32 | namespace art { |
| 33 | |
Orion Hodson | ba28f9f | 2016-10-26 10:56:25 +0100 | [diff] [blame] | 34 | inline bool ConvertArgumentValue(Handle<mirror::MethodType> callsite_type, |
| 35 | Handle<mirror::MethodType> callee_type, |
Orion Hodson | b8b9387 | 2018-01-30 07:51:10 +0000 | [diff] [blame] | 36 | ObjPtr<mirror::Class> from_class, |
| 37 | ObjPtr<mirror::Class> to_class, |
Orion Hodson | ba28f9f | 2016-10-26 10:56:25 +0100 | [diff] [blame] | 38 | JValue* value) REQUIRES_SHARED(Locks::mutator_lock_) { |
Orion Hodson | ba28f9f | 2016-10-26 10:56:25 +0100 | [diff] [blame] | 39 | if (from_class == to_class) { |
Narayan Kamath | 208f857 | 2016-08-03 12:46:58 +0100 | [diff] [blame] | 40 | return true; |
Orion Hodson | ba28f9f | 2016-10-26 10:56:25 +0100 | [diff] [blame] | 41 | } |
| 42 | |
| 43 | // |value| may contain a bare heap pointer which is generally |
| 44 | // |unsafe. ConvertJValueCommon() saves |value|, |from_class|, and |
| 45 | // |to_class| to Handles where necessary to avoid issues if the heap |
| 46 | // changes. |
| 47 | if (ConvertJValueCommon(callsite_type, callee_type, from_class, to_class, value)) { |
| 48 | DCHECK(!Thread::Current()->IsExceptionPending()); |
Narayan Kamath | 208f857 | 2016-08-03 12:46:58 +0100 | [diff] [blame] | 49 | return true; |
| 50 | } else { |
Orion Hodson | ba28f9f | 2016-10-26 10:56:25 +0100 | [diff] [blame] | 51 | DCHECK(Thread::Current()->IsExceptionPending()); |
| 52 | value->SetJ(0); |
Narayan Kamath | 208f857 | 2016-08-03 12:46:58 +0100 | [diff] [blame] | 53 | return false; |
| 54 | } |
| 55 | } |
| 56 | |
Orion Hodson | b8b9387 | 2018-01-30 07:51:10 +0000 | [diff] [blame] | 57 | inline bool ConvertArgumentValue(Handle<mirror::MethodType> callsite_type, |
| 58 | Handle<mirror::MethodType> callee_type, |
| 59 | int index, |
| 60 | JValue* value) REQUIRES_SHARED(Locks::mutator_lock_) { |
| 61 | return ConvertArgumentValue(callsite_type, |
| 62 | callee_type, |
| 63 | callsite_type->GetPTypes()->GetWithoutChecks(index), |
| 64 | callee_type->GetPTypes()->GetWithoutChecks(index), |
| 65 | value); |
| 66 | } |
| 67 | |
Orion Hodson | ba28f9f | 2016-10-26 10:56:25 +0100 | [diff] [blame] | 68 | inline bool ConvertReturnValue(Handle<mirror::MethodType> callsite_type, |
| 69 | Handle<mirror::MethodType> callee_type, |
| 70 | JValue* value) REQUIRES_SHARED(Locks::mutator_lock_) { |
| 71 | ObjPtr<mirror::Class> from_class(callee_type->GetRType()); |
| 72 | ObjPtr<mirror::Class> to_class(callsite_type->GetRType()); |
| 73 | if (to_class->GetPrimitiveType() == Primitive::kPrimVoid || from_class == to_class) { |
| 74 | return true; |
Narayan Kamath | da24650 | 2016-10-20 18:39:22 +0100 | [diff] [blame] | 75 | } |
| 76 | |
Orion Hodson | ba28f9f | 2016-10-26 10:56:25 +0100 | [diff] [blame] | 77 | // |value| may contain a bare heap pointer which is generally |
| 78 | // unsafe. ConvertJValueCommon() saves |value|, |from_class|, and |
| 79 | // |to_class| to Handles where necessary to avoid issues if the heap |
| 80 | // changes. |
| 81 | if (ConvertJValueCommon(callsite_type, callee_type, from_class, to_class, value)) { |
| 82 | DCHECK(!Thread::Current()->IsExceptionPending()); |
| 83 | return true; |
| 84 | } else { |
| 85 | DCHECK(Thread::Current()->IsExceptionPending()); |
| 86 | value->SetJ(0); |
| 87 | return false; |
| 88 | } |
Narayan Kamath | da24650 | 2016-10-20 18:39:22 +0100 | [diff] [blame] | 89 | } |
| 90 | |
Narayan Kamath | 000e188 | 2016-10-24 17:14:25 +0100 | [diff] [blame] | 91 | template <typename G, typename S> |
| 92 | bool PerformConversions(Thread* self, |
Orion Hodson | ba28f9f | 2016-10-26 10:56:25 +0100 | [diff] [blame] | 93 | Handle<mirror::MethodType> callsite_type, |
| 94 | Handle<mirror::MethodType> callee_type, |
Narayan Kamath | 000e188 | 2016-10-24 17:14:25 +0100 | [diff] [blame] | 95 | G* getter, |
| 96 | S* setter, |
Orion Hodson | b8b9387 | 2018-01-30 07:51:10 +0000 | [diff] [blame] | 97 | int32_t start_index, |
| 98 | int32_t end_index) REQUIRES_SHARED(Locks::mutator_lock_) { |
Narayan Kamath | 000e188 | 2016-10-24 17:14:25 +0100 | [diff] [blame] | 99 | StackHandleScope<2> hs(self); |
Orion Hodson | ba28f9f | 2016-10-26 10:56:25 +0100 | [diff] [blame] | 100 | Handle<mirror::ObjectArray<mirror::Class>> from_types(hs.NewHandle(callsite_type->GetPTypes())); |
| 101 | Handle<mirror::ObjectArray<mirror::Class>> to_types(hs.NewHandle(callee_type->GetPTypes())); |
Narayan Kamath | 000e188 | 2016-10-24 17:14:25 +0100 | [diff] [blame] | 102 | |
Orion Hodson | b8b9387 | 2018-01-30 07:51:10 +0000 | [diff] [blame] | 103 | for (int32_t i = start_index; i < end_index; ++i) { |
Orion Hodson | ba28f9f | 2016-10-26 10:56:25 +0100 | [diff] [blame] | 104 | ObjPtr<mirror::Class> from(from_types->GetWithoutChecks(i)); |
Orion Hodson | b8b9387 | 2018-01-30 07:51:10 +0000 | [diff] [blame] | 105 | ObjPtr<mirror::Class> to(to_types->GetWithoutChecks(i - start_index)); |
| 106 | const Primitive::Type from_type = from->GetPrimitiveType(); |
| 107 | const Primitive::Type to_type = to->GetPrimitiveType(); |
Orion Hodson | ba28f9f | 2016-10-26 10:56:25 +0100 | [diff] [blame] | 108 | if (from == to) { |
Narayan Kamath | 000e188 | 2016-10-24 17:14:25 +0100 | [diff] [blame] | 109 | // Easy case - the types are identical. Nothing left to do except to pass |
| 110 | // the arguments along verbatim. |
| 111 | if (Primitive::Is64BitType(from_type)) { |
| 112 | setter->SetLong(getter->GetLong()); |
| 113 | } else if (from_type == Primitive::kPrimNot) { |
| 114 | setter->SetReference(getter->GetReference()); |
| 115 | } else { |
| 116 | setter->Set(getter->Get()); |
| 117 | } |
Narayan Kamath | 000e188 | 2016-10-24 17:14:25 +0100 | [diff] [blame] | 118 | } else { |
Orion Hodson | ba28f9f | 2016-10-26 10:56:25 +0100 | [diff] [blame] | 119 | JValue value; |
Narayan Kamath | 000e188 | 2016-10-24 17:14:25 +0100 | [diff] [blame] | 120 | if (Primitive::Is64BitType(from_type)) { |
Orion Hodson | ba28f9f | 2016-10-26 10:56:25 +0100 | [diff] [blame] | 121 | value.SetJ(getter->GetLong()); |
Narayan Kamath | 000e188 | 2016-10-24 17:14:25 +0100 | [diff] [blame] | 122 | } else if (from_type == Primitive::kPrimNot) { |
Orion Hodson | ba28f9f | 2016-10-26 10:56:25 +0100 | [diff] [blame] | 123 | value.SetL(getter->GetReference()); |
Narayan Kamath | 000e188 | 2016-10-24 17:14:25 +0100 | [diff] [blame] | 124 | } else { |
Orion Hodson | ba28f9f | 2016-10-26 10:56:25 +0100 | [diff] [blame] | 125 | value.SetI(getter->Get()); |
Narayan Kamath | 000e188 | 2016-10-24 17:14:25 +0100 | [diff] [blame] | 126 | } |
Orion Hodson | ba28f9f | 2016-10-26 10:56:25 +0100 | [diff] [blame] | 127 | // Caveat emptor - ObjPtr's not guaranteed valid after this call. |
Orion Hodson | b8b9387 | 2018-01-30 07:51:10 +0000 | [diff] [blame] | 128 | if (!ConvertArgumentValue(callsite_type, callee_type, from, to, &value)) { |
Narayan Kamath | 000e188 | 2016-10-24 17:14:25 +0100 | [diff] [blame] | 129 | DCHECK(self->IsExceptionPending()); |
| 130 | return false; |
| 131 | } |
Narayan Kamath | 000e188 | 2016-10-24 17:14:25 +0100 | [diff] [blame] | 132 | if (Primitive::Is64BitType(to_type)) { |
Orion Hodson | ba28f9f | 2016-10-26 10:56:25 +0100 | [diff] [blame] | 133 | setter->SetLong(value.GetJ()); |
Narayan Kamath | 000e188 | 2016-10-24 17:14:25 +0100 | [diff] [blame] | 134 | } else if (to_type == Primitive::kPrimNot) { |
Orion Hodson | ba28f9f | 2016-10-26 10:56:25 +0100 | [diff] [blame] | 135 | setter->SetReference(value.GetL()); |
Narayan Kamath | 000e188 | 2016-10-24 17:14:25 +0100 | [diff] [blame] | 136 | } else { |
Orion Hodson | ba28f9f | 2016-10-26 10:56:25 +0100 | [diff] [blame] | 137 | setter->Set(value.GetI()); |
Narayan Kamath | 000e188 | 2016-10-24 17:14:25 +0100 | [diff] [blame] | 138 | } |
| 139 | } |
| 140 | } |
Narayan Kamath | 000e188 | 2016-10-24 17:14:25 +0100 | [diff] [blame] | 141 | return true; |
| 142 | } |
| 143 | |
Orion Hodson | b8b9387 | 2018-01-30 07:51:10 +0000 | [diff] [blame] | 144 | template <typename G, typename S> |
| 145 | bool PerformConversions(Thread* self, |
| 146 | Handle<mirror::MethodType> callsite_type, |
| 147 | Handle<mirror::MethodType> callee_type, |
| 148 | G* getter, |
| 149 | S* setter, |
| 150 | int32_t num_conversions) |
| 151 | REQUIRES_SHARED(Locks::mutator_lock_) { |
| 152 | return PerformConversions(self, callsite_type, callee_type, getter, setter, 0, num_conversions); |
| 153 | } |
| 154 | |
| 155 | template <typename G, typename S> |
| 156 | bool PerformConversions(Thread* self, |
| 157 | Handle<mirror::MethodType> callsite_type, |
| 158 | Handle<mirror::MethodType> callee_type, |
| 159 | G* getter, |
| 160 | S* setter) |
| 161 | REQUIRES_SHARED(Locks::mutator_lock_) { |
| 162 | int32_t num_conversions = callee_type->GetPTypes()->GetLength(); |
| 163 | return PerformConversions(self, callsite_type, callee_type, getter, setter, 0, num_conversions); |
| 164 | } |
| 165 | |
Narayan Kamath | 208f857 | 2016-08-03 12:46:58 +0100 | [diff] [blame] | 166 | } // namespace art |
| 167 | |
| 168 | #endif // ART_RUNTIME_METHOD_HANDLES_INL_H_ |