Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 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_ENTRYPOINTS_ENTRYPOINT_UTILS_INL_H_ |
| 18 | #define ART_RUNTIME_ENTRYPOINTS_ENTRYPOINT_UTILS_INL_H_ |
| 19 | |
| 20 | #include "entrypoint_utils.h" |
| 21 | |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 22 | #include "art_method.h" |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 23 | #include "class_linker-inl.h" |
| 24 | #include "common_throws.h" |
| 25 | #include "dex_file.h" |
Vladimir Marko | 5ea536a | 2015-04-20 20:11:30 +0100 | [diff] [blame] | 26 | #include "entrypoints/quick/callee_save_frame.h" |
| 27 | #include "handle_scope-inl.h" |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 28 | #include "indirect_reference_table.h" |
| 29 | #include "invoke_type.h" |
| 30 | #include "jni_internal.h" |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 31 | #include "mirror/array.h" |
| 32 | #include "mirror/class-inl.h" |
| 33 | #include "mirror/object-inl.h" |
| 34 | #include "mirror/throwable.h" |
Vladimir Marko | 5ea536a | 2015-04-20 20:11:30 +0100 | [diff] [blame] | 35 | #include "nth_caller_visitor.h" |
| 36 | #include "runtime.h" |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 37 | #include "thread.h" |
| 38 | |
| 39 | namespace art { |
| 40 | |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 41 | inline ArtMethod* GetResolvedMethod(ArtMethod* outer_method, |
Nicolas Geoffray | 32c9ea5 | 2015-06-12 14:52:33 +0100 | [diff] [blame^] | 42 | const InlineInfo& inline_info, |
| 43 | uint8_t inlining_depth) |
Nicolas Geoffray | d23eeef | 2015-05-18 22:31:29 +0100 | [diff] [blame] | 44 | SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
Nicolas Geoffray | 32c9ea5 | 2015-06-12 14:52:33 +0100 | [diff] [blame^] | 45 | uint32_t method_index = inline_info.GetMethodIndexAtDepth(inlining_depth); |
| 46 | InvokeType invoke_type = static_cast<InvokeType>( |
| 47 | inline_info.GetInvokeTypeAtDepth(inlining_depth)); |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 48 | ArtMethod* caller = outer_method->GetDexCacheResolvedMethod(method_index, sizeof(void*)); |
Nicolas Geoffray | d23eeef | 2015-05-18 22:31:29 +0100 | [diff] [blame] | 49 | if (!caller->IsRuntimeMethod()) { |
| 50 | return caller; |
| 51 | } |
| 52 | |
| 53 | // The method in the dex cache can be the runtime method responsible for invoking |
| 54 | // the stub that will then update the dex cache. Therefore, we need to do the |
| 55 | // resolution ourselves. |
Nicolas Geoffray | 32c9ea5 | 2015-06-12 14:52:33 +0100 | [diff] [blame^] | 56 | |
| 57 | // We first find the class loader of our caller. If it is the outer method, we can directly |
| 58 | // use its class loader. Otherwise, we also need to resolve our caller. |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 59 | StackHandleScope<2> hs(Thread::Current()); |
Nicolas Geoffray | d23eeef | 2015-05-18 22:31:29 +0100 | [diff] [blame] | 60 | ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); |
Nicolas Geoffray | 32c9ea5 | 2015-06-12 14:52:33 +0100 | [diff] [blame^] | 61 | MutableHandle<mirror::ClassLoader> class_loader(hs.NewHandle<mirror::Class>(nullptr)); |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 62 | Handle<mirror::DexCache> dex_cache(hs.NewHandle(outer_method->GetDexCache())); |
Nicolas Geoffray | 32c9ea5 | 2015-06-12 14:52:33 +0100 | [diff] [blame^] | 63 | if (inlining_depth == 0) { |
| 64 | class_loader.Assign(outer_method->GetClassLoader()); |
| 65 | } else { |
| 66 | caller = GetResolvedMethod(outer_method, inline_info, inlining_depth - 1); |
| 67 | class_loader.Assign(caller->GetClassLoader()); |
| 68 | } |
| 69 | |
Nicolas Geoffray | d23eeef | 2015-05-18 22:31:29 +0100 | [diff] [blame] | 70 | return class_linker->ResolveMethod( |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 71 | *outer_method->GetDexFile(), method_index, dex_cache, class_loader, nullptr, invoke_type); |
Nicolas Geoffray | d23eeef | 2015-05-18 22:31:29 +0100 | [diff] [blame] | 72 | } |
| 73 | |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 74 | inline ArtMethod* GetCalleeSaveMethodCaller(ArtMethod** sp, |
| 75 | Runtime::CalleeSaveType type, |
| 76 | bool do_caller_check = false) |
Vladimir Marko | 5ea536a | 2015-04-20 20:11:30 +0100 | [diff] [blame] | 77 | SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 78 | DCHECK_EQ(*sp, Runtime::Current()->GetCalleeSaveMethod(type)); |
Vladimir Marko | 5ea536a | 2015-04-20 20:11:30 +0100 | [diff] [blame] | 79 | |
| 80 | const size_t callee_frame_size = GetCalleeSaveFrameSize(kRuntimeISA, type); |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 81 | auto** caller_sp = reinterpret_cast<ArtMethod**>( |
| 82 | reinterpret_cast<uintptr_t>(sp) + callee_frame_size); |
| 83 | ArtMethod* outer_method = *caller_sp; |
| 84 | ArtMethod* caller = outer_method; |
Nicolas Geoffray | d23eeef | 2015-05-18 22:31:29 +0100 | [diff] [blame] | 85 | |
| 86 | if ((outer_method != nullptr) && outer_method->IsOptimized(sizeof(void*))) { |
| 87 | const size_t callee_return_pc_offset = GetCalleeSaveReturnPcOffset(kRuntimeISA, type); |
| 88 | uintptr_t caller_pc = *reinterpret_cast<uintptr_t*>( |
| 89 | (reinterpret_cast<uint8_t*>(sp) + callee_return_pc_offset)); |
| 90 | uintptr_t native_pc_offset = outer_method->NativeQuickPcOffset(caller_pc); |
| 91 | CodeInfo code_info = outer_method->GetOptimizedCodeInfo(); |
David Brazdil | f677ebf | 2015-05-29 16:29:43 +0100 | [diff] [blame] | 92 | StackMapEncoding encoding = code_info.ExtractEncoding(); |
| 93 | StackMap stack_map = code_info.GetStackMapForNativePcOffset(native_pc_offset, encoding); |
Nicolas Geoffray | d23eeef | 2015-05-18 22:31:29 +0100 | [diff] [blame] | 94 | DCHECK(stack_map.IsValid()); |
David Brazdil | f677ebf | 2015-05-29 16:29:43 +0100 | [diff] [blame] | 95 | if (stack_map.HasInlineInfo(encoding)) { |
| 96 | InlineInfo inline_info = code_info.GetInlineInfoOf(stack_map, encoding); |
Nicolas Geoffray | 32c9ea5 | 2015-06-12 14:52:33 +0100 | [diff] [blame^] | 97 | caller = GetResolvedMethod(outer_method, inline_info, inline_info.GetDepth() - 1); |
Nicolas Geoffray | d23eeef | 2015-05-18 22:31:29 +0100 | [diff] [blame] | 98 | } |
| 99 | } |
Vladimir Marko | 5ea536a | 2015-04-20 20:11:30 +0100 | [diff] [blame] | 100 | |
Nicolas Geoffray | 7ea6a17 | 2015-05-19 18:58:54 +0100 | [diff] [blame] | 101 | if (kIsDebugBuild && do_caller_check) { |
| 102 | // Note that do_caller_check is optional, as this method can be called by |
| 103 | // stubs, and tests without a proper call stack. |
| 104 | NthCallerVisitor visitor(Thread::Current(), 1, true); |
Vladimir Marko | 5ea536a | 2015-04-20 20:11:30 +0100 | [diff] [blame] | 105 | visitor.WalkStack(); |
Nicolas Geoffray | 7ea6a17 | 2015-05-19 18:58:54 +0100 | [diff] [blame] | 106 | CHECK_EQ(caller, visitor.caller); |
Vladimir Marko | 5ea536a | 2015-04-20 20:11:30 +0100 | [diff] [blame] | 107 | } |
| 108 | |
| 109 | return caller; |
| 110 | } |
| 111 | |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 112 | inline ArtMethod* GetCalleeSaveMethodCaller(Thread* self, Runtime::CalleeSaveType type) |
Nicolas Geoffray | 7ea6a17 | 2015-05-19 18:58:54 +0100 | [diff] [blame] | 113 | SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| 114 | return GetCalleeSaveMethodCaller( |
| 115 | self->GetManagedStack()->GetTopQuickFrame(), type, true /* do_caller_check */); |
| 116 | } |
| 117 | |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 118 | template <const bool kAccessCheck> |
Hiroshi Yamauchi | eb1e929 | 2014-08-06 12:41:15 -0700 | [diff] [blame] | 119 | ALWAYS_INLINE |
Andreas Gampe | 9f612ff | 2014-11-24 13:42:22 -0800 | [diff] [blame] | 120 | inline mirror::Class* CheckObjectAlloc(uint32_t type_idx, |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 121 | ArtMethod* method, |
Andreas Gampe | 9f612ff | 2014-11-24 13:42:22 -0800 | [diff] [blame] | 122 | Thread* self, bool* slow_path) { |
Andreas Gampe | 58a5af8 | 2014-07-31 16:23:49 -0700 | [diff] [blame] | 123 | mirror::Class* klass = method->GetDexCacheResolvedType<false>(type_idx); |
Mathieu Chartier | 2cebb24 | 2015-04-21 16:50:40 -0700 | [diff] [blame] | 124 | if (UNLIKELY(klass == nullptr)) { |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 125 | klass = Runtime::Current()->GetClassLinker()->ResolveType(type_idx, method); |
| 126 | *slow_path = true; |
Mathieu Chartier | 2cebb24 | 2015-04-21 16:50:40 -0700 | [diff] [blame] | 127 | if (klass == nullptr) { |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 128 | DCHECK(self->IsExceptionPending()); |
| 129 | return nullptr; // Failure |
Mathieu Chartier | 524507a | 2014-08-27 15:28:28 -0700 | [diff] [blame] | 130 | } else { |
| 131 | DCHECK(!self->IsExceptionPending()); |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 132 | } |
| 133 | } |
| 134 | if (kAccessCheck) { |
| 135 | if (UNLIKELY(!klass->IsInstantiable())) { |
Nicolas Geoffray | 0aa50ce | 2015-03-10 11:03:29 +0000 | [diff] [blame] | 136 | self->ThrowNewException("Ljava/lang/InstantiationError;", PrettyDescriptor(klass).c_str()); |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 137 | *slow_path = true; |
| 138 | return nullptr; // Failure |
| 139 | } |
| 140 | mirror::Class* referrer = method->GetDeclaringClass(); |
| 141 | if (UNLIKELY(!referrer->CanAccess(klass))) { |
| 142 | ThrowIllegalAccessErrorClass(referrer, klass); |
| 143 | *slow_path = true; |
| 144 | return nullptr; // Failure |
| 145 | } |
| 146 | } |
| 147 | if (UNLIKELY(!klass->IsInitialized())) { |
| 148 | StackHandleScope<1> hs(self); |
| 149 | Handle<mirror::Class> h_klass(hs.NewHandle(klass)); |
| 150 | // EnsureInitialized (the class initializer) might cause a GC. |
| 151 | // may cause us to suspend meaning that another thread may try to |
| 152 | // change the allocator while we are stuck in the entrypoints of |
| 153 | // an old allocator. Also, the class initialization may fail. To |
| 154 | // handle these cases we mark the slow path boolean as true so |
| 155 | // that the caller knows to check the allocator type to see if it |
| 156 | // has changed and to null-check the return value in case the |
| 157 | // initialization fails. |
| 158 | *slow_path = true; |
Ian Rogers | 7b078e8 | 2014-09-10 14:44:24 -0700 | [diff] [blame] | 159 | if (!Runtime::Current()->GetClassLinker()->EnsureInitialized(self, h_klass, true, true)) { |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 160 | DCHECK(self->IsExceptionPending()); |
| 161 | return nullptr; // Failure |
Mathieu Chartier | 524507a | 2014-08-27 15:28:28 -0700 | [diff] [blame] | 162 | } else { |
| 163 | DCHECK(!self->IsExceptionPending()); |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 164 | } |
| 165 | return h_klass.Get(); |
| 166 | } |
| 167 | return klass; |
| 168 | } |
| 169 | |
Hiroshi Yamauchi | eb1e929 | 2014-08-06 12:41:15 -0700 | [diff] [blame] | 170 | ALWAYS_INLINE |
Andreas Gampe | 9f612ff | 2014-11-24 13:42:22 -0800 | [diff] [blame] | 171 | inline mirror::Class* CheckClassInitializedForObjectAlloc(mirror::Class* klass, |
| 172 | Thread* self, |
| 173 | bool* slow_path) { |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 174 | if (UNLIKELY(!klass->IsInitialized())) { |
| 175 | StackHandleScope<1> hs(self); |
| 176 | Handle<mirror::Class> h_class(hs.NewHandle(klass)); |
| 177 | // EnsureInitialized (the class initializer) might cause a GC. |
| 178 | // may cause us to suspend meaning that another thread may try to |
| 179 | // change the allocator while we are stuck in the entrypoints of |
| 180 | // an old allocator. Also, the class initialization may fail. To |
| 181 | // handle these cases we mark the slow path boolean as true so |
| 182 | // that the caller knows to check the allocator type to see if it |
| 183 | // has changed and to null-check the return value in case the |
| 184 | // initialization fails. |
| 185 | *slow_path = true; |
Ian Rogers | 7b078e8 | 2014-09-10 14:44:24 -0700 | [diff] [blame] | 186 | if (!Runtime::Current()->GetClassLinker()->EnsureInitialized(self, h_class, true, true)) { |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 187 | DCHECK(self->IsExceptionPending()); |
| 188 | return nullptr; // Failure |
| 189 | } |
| 190 | return h_class.Get(); |
| 191 | } |
| 192 | return klass; |
| 193 | } |
| 194 | |
| 195 | // Given the context of a calling Method, use its DexCache to resolve a type to a Class. If it |
| 196 | // cannot be resolved, throw an error. If it can, use it to create an instance. |
| 197 | // When verification/compiler hasn't been able to verify access, optionally perform an access |
| 198 | // check. |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 199 | template <bool kAccessCheck, bool kInstrumented> |
Hiroshi Yamauchi | eb1e929 | 2014-08-06 12:41:15 -0700 | [diff] [blame] | 200 | ALWAYS_INLINE |
Andreas Gampe | 9f612ff | 2014-11-24 13:42:22 -0800 | [diff] [blame] | 201 | inline mirror::Object* AllocObjectFromCode(uint32_t type_idx, |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 202 | ArtMethod* method, |
Andreas Gampe | 9f612ff | 2014-11-24 13:42:22 -0800 | [diff] [blame] | 203 | Thread* self, |
| 204 | gc::AllocatorType allocator_type) { |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 205 | bool slow_path = false; |
| 206 | mirror::Class* klass = CheckObjectAlloc<kAccessCheck>(type_idx, method, self, &slow_path); |
| 207 | if (UNLIKELY(slow_path)) { |
| 208 | if (klass == nullptr) { |
| 209 | return nullptr; |
| 210 | } |
| 211 | return klass->Alloc<kInstrumented>(self, Runtime::Current()->GetHeap()->GetCurrentAllocator()); |
| 212 | } |
| 213 | DCHECK(klass != nullptr); |
| 214 | return klass->Alloc<kInstrumented>(self, allocator_type); |
| 215 | } |
| 216 | |
| 217 | // Given the context of a calling Method and a resolved class, create an instance. |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 218 | template <bool kInstrumented> |
Hiroshi Yamauchi | eb1e929 | 2014-08-06 12:41:15 -0700 | [diff] [blame] | 219 | ALWAYS_INLINE |
Andreas Gampe | 9f612ff | 2014-11-24 13:42:22 -0800 | [diff] [blame] | 220 | inline mirror::Object* AllocObjectFromCodeResolved(mirror::Class* klass, |
| 221 | Thread* self, |
| 222 | gc::AllocatorType allocator_type) { |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 223 | DCHECK(klass != nullptr); |
| 224 | bool slow_path = false; |
| 225 | klass = CheckClassInitializedForObjectAlloc(klass, self, &slow_path); |
| 226 | if (UNLIKELY(slow_path)) { |
| 227 | if (klass == nullptr) { |
| 228 | return nullptr; |
| 229 | } |
| 230 | gc::Heap* heap = Runtime::Current()->GetHeap(); |
| 231 | // Pass in false since the object can not be finalizable. |
| 232 | return klass->Alloc<kInstrumented, false>(self, heap->GetCurrentAllocator()); |
| 233 | } |
| 234 | // Pass in false since the object can not be finalizable. |
| 235 | return klass->Alloc<kInstrumented, false>(self, allocator_type); |
| 236 | } |
| 237 | |
| 238 | // Given the context of a calling Method and an initialized class, create an instance. |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 239 | template <bool kInstrumented> |
Hiroshi Yamauchi | eb1e929 | 2014-08-06 12:41:15 -0700 | [diff] [blame] | 240 | ALWAYS_INLINE |
Andreas Gampe | 9f612ff | 2014-11-24 13:42:22 -0800 | [diff] [blame] | 241 | inline mirror::Object* AllocObjectFromCodeInitialized(mirror::Class* klass, |
| 242 | Thread* self, |
| 243 | gc::AllocatorType allocator_type) { |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 244 | DCHECK(klass != nullptr); |
| 245 | // Pass in false since the object can not be finalizable. |
| 246 | return klass->Alloc<kInstrumented, false>(self, allocator_type); |
| 247 | } |
| 248 | |
| 249 | |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 250 | template <bool kAccessCheck> |
Hiroshi Yamauchi | eb1e929 | 2014-08-06 12:41:15 -0700 | [diff] [blame] | 251 | ALWAYS_INLINE |
Andreas Gampe | 9f612ff | 2014-11-24 13:42:22 -0800 | [diff] [blame] | 252 | inline mirror::Class* CheckArrayAlloc(uint32_t type_idx, |
Andreas Gampe | 9f612ff | 2014-11-24 13:42:22 -0800 | [diff] [blame] | 253 | int32_t component_count, |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 254 | ArtMethod* method, |
Andreas Gampe | 9f612ff | 2014-11-24 13:42:22 -0800 | [diff] [blame] | 255 | bool* slow_path) { |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 256 | if (UNLIKELY(component_count < 0)) { |
| 257 | ThrowNegativeArraySizeException(component_count); |
| 258 | *slow_path = true; |
| 259 | return nullptr; // Failure |
| 260 | } |
Andreas Gampe | 58a5af8 | 2014-07-31 16:23:49 -0700 | [diff] [blame] | 261 | mirror::Class* klass = method->GetDexCacheResolvedType<false>(type_idx); |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 262 | if (UNLIKELY(klass == nullptr)) { // Not in dex cache so try to resolve |
| 263 | klass = Runtime::Current()->GetClassLinker()->ResolveType(type_idx, method); |
| 264 | *slow_path = true; |
| 265 | if (klass == nullptr) { // Error |
| 266 | DCHECK(Thread::Current()->IsExceptionPending()); |
| 267 | return nullptr; // Failure |
| 268 | } |
| 269 | CHECK(klass->IsArrayClass()) << PrettyClass(klass); |
| 270 | } |
| 271 | if (kAccessCheck) { |
| 272 | mirror::Class* referrer = method->GetDeclaringClass(); |
| 273 | if (UNLIKELY(!referrer->CanAccess(klass))) { |
| 274 | ThrowIllegalAccessErrorClass(referrer, klass); |
| 275 | *slow_path = true; |
| 276 | return nullptr; // Failure |
| 277 | } |
| 278 | } |
| 279 | return klass; |
| 280 | } |
| 281 | |
| 282 | // Given the context of a calling Method, use its DexCache to resolve a type to an array Class. If |
| 283 | // it cannot be resolved, throw an error. If it can, use it to create an array. |
| 284 | // When verification/compiler hasn't been able to verify access, optionally perform an access |
| 285 | // check. |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 286 | template <bool kAccessCheck, bool kInstrumented> |
Hiroshi Yamauchi | eb1e929 | 2014-08-06 12:41:15 -0700 | [diff] [blame] | 287 | ALWAYS_INLINE |
Andreas Gampe | 9f612ff | 2014-11-24 13:42:22 -0800 | [diff] [blame] | 288 | inline mirror::Array* AllocArrayFromCode(uint32_t type_idx, |
Andreas Gampe | 9f612ff | 2014-11-24 13:42:22 -0800 | [diff] [blame] | 289 | int32_t component_count, |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 290 | ArtMethod* method, |
Andreas Gampe | 9f612ff | 2014-11-24 13:42:22 -0800 | [diff] [blame] | 291 | Thread* self, |
| 292 | gc::AllocatorType allocator_type) { |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 293 | bool slow_path = false; |
Andreas Gampe | 1cc7dba | 2014-12-17 18:43:01 -0800 | [diff] [blame] | 294 | mirror::Class* klass = CheckArrayAlloc<kAccessCheck>(type_idx, component_count, method, |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 295 | &slow_path); |
| 296 | if (UNLIKELY(slow_path)) { |
| 297 | if (klass == nullptr) { |
| 298 | return nullptr; |
| 299 | } |
| 300 | gc::Heap* heap = Runtime::Current()->GetHeap(); |
| 301 | return mirror::Array::Alloc<kInstrumented>(self, klass, component_count, |
Hiroshi Yamauchi | f0edfc3 | 2014-09-25 11:46:46 -0700 | [diff] [blame] | 302 | klass->GetComponentSizeShift(), |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 303 | heap->GetCurrentAllocator()); |
| 304 | } |
| 305 | return mirror::Array::Alloc<kInstrumented>(self, klass, component_count, |
Hiroshi Yamauchi | f0edfc3 | 2014-09-25 11:46:46 -0700 | [diff] [blame] | 306 | klass->GetComponentSizeShift(), allocator_type); |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 307 | } |
| 308 | |
| 309 | template <bool kAccessCheck, bool kInstrumented> |
Hiroshi Yamauchi | eb1e929 | 2014-08-06 12:41:15 -0700 | [diff] [blame] | 310 | ALWAYS_INLINE |
Andreas Gampe | 9f612ff | 2014-11-24 13:42:22 -0800 | [diff] [blame] | 311 | inline mirror::Array* AllocArrayFromCodeResolved(mirror::Class* klass, |
Andreas Gampe | 9f612ff | 2014-11-24 13:42:22 -0800 | [diff] [blame] | 312 | int32_t component_count, |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 313 | ArtMethod* method, |
Andreas Gampe | 9f612ff | 2014-11-24 13:42:22 -0800 | [diff] [blame] | 314 | Thread* self, |
| 315 | gc::AllocatorType allocator_type) { |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 316 | DCHECK(klass != nullptr); |
| 317 | if (UNLIKELY(component_count < 0)) { |
| 318 | ThrowNegativeArraySizeException(component_count); |
| 319 | return nullptr; // Failure |
| 320 | } |
| 321 | if (kAccessCheck) { |
| 322 | mirror::Class* referrer = method->GetDeclaringClass(); |
| 323 | if (UNLIKELY(!referrer->CanAccess(klass))) { |
| 324 | ThrowIllegalAccessErrorClass(referrer, klass); |
| 325 | return nullptr; // Failure |
| 326 | } |
| 327 | } |
| 328 | // No need to retry a slow-path allocation as the above code won't cause a GC or thread |
| 329 | // suspension. |
| 330 | return mirror::Array::Alloc<kInstrumented>(self, klass, component_count, |
Hiroshi Yamauchi | f0edfc3 | 2014-09-25 11:46:46 -0700 | [diff] [blame] | 331 | klass->GetComponentSizeShift(), allocator_type); |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 332 | } |
| 333 | |
| 334 | template<FindFieldType type, bool access_check> |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 335 | inline ArtField* FindFieldFromCode(uint32_t field_idx, ArtMethod* referrer, |
Andreas Gampe | 9f612ff | 2014-11-24 13:42:22 -0800 | [diff] [blame] | 336 | Thread* self, size_t expected_size) { |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 337 | bool is_primitive; |
| 338 | bool is_set; |
| 339 | bool is_static; |
| 340 | switch (type) { |
| 341 | case InstanceObjectRead: is_primitive = false; is_set = false; is_static = false; break; |
| 342 | case InstanceObjectWrite: is_primitive = false; is_set = true; is_static = false; break; |
| 343 | case InstancePrimitiveRead: is_primitive = true; is_set = false; is_static = false; break; |
| 344 | case InstancePrimitiveWrite: is_primitive = true; is_set = true; is_static = false; break; |
| 345 | case StaticObjectRead: is_primitive = false; is_set = false; is_static = true; break; |
| 346 | case StaticObjectWrite: is_primitive = false; is_set = true; is_static = true; break; |
| 347 | case StaticPrimitiveRead: is_primitive = true; is_set = false; is_static = true; break; |
| 348 | case StaticPrimitiveWrite: // Keep GCC happy by having a default handler, fall-through. |
| 349 | default: is_primitive = true; is_set = true; is_static = true; break; |
| 350 | } |
| 351 | ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); |
Mathieu Chartier | c785344 | 2015-03-27 14:35:38 -0700 | [diff] [blame] | 352 | ArtField* resolved_field = class_linker->ResolveField(field_idx, referrer, is_static); |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 353 | if (UNLIKELY(resolved_field == nullptr)) { |
| 354 | DCHECK(self->IsExceptionPending()); // Throw exception and unwind. |
| 355 | return nullptr; // Failure. |
| 356 | } |
| 357 | mirror::Class* fields_class = resolved_field->GetDeclaringClass(); |
| 358 | if (access_check) { |
| 359 | if (UNLIKELY(resolved_field->IsStatic() != is_static)) { |
| 360 | ThrowIncompatibleClassChangeErrorField(resolved_field, is_static, referrer); |
| 361 | return nullptr; |
| 362 | } |
| 363 | mirror::Class* referring_class = referrer->GetDeclaringClass(); |
| 364 | if (UNLIKELY(!referring_class->CheckResolvedFieldAccess(fields_class, resolved_field, |
| 365 | field_idx))) { |
| 366 | DCHECK(self->IsExceptionPending()); // Throw exception and unwind. |
| 367 | return nullptr; // Failure. |
| 368 | } |
| 369 | if (UNLIKELY(is_set && resolved_field->IsFinal() && (fields_class != referring_class))) { |
| 370 | ThrowIllegalAccessErrorFinalField(referrer, resolved_field); |
| 371 | return nullptr; // Failure. |
| 372 | } else { |
| 373 | if (UNLIKELY(resolved_field->IsPrimitiveType() != is_primitive || |
| 374 | resolved_field->FieldSize() != expected_size)) { |
Nicolas Geoffray | 0aa50ce | 2015-03-10 11:03:29 +0000 | [diff] [blame] | 375 | self->ThrowNewExceptionF("Ljava/lang/NoSuchFieldError;", |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 376 | "Attempted read of %zd-bit %s on field '%s'", |
| 377 | expected_size * (32 / sizeof(int32_t)), |
| 378 | is_primitive ? "primitive" : "non-primitive", |
| 379 | PrettyField(resolved_field, true).c_str()); |
| 380 | return nullptr; // Failure. |
| 381 | } |
| 382 | } |
| 383 | } |
| 384 | if (!is_static) { |
| 385 | // instance fields must be being accessed on an initialized class |
| 386 | return resolved_field; |
| 387 | } else { |
| 388 | // If the class is initialized we're done. |
| 389 | if (LIKELY(fields_class->IsInitialized())) { |
| 390 | return resolved_field; |
| 391 | } else { |
| 392 | StackHandleScope<1> hs(self); |
| 393 | Handle<mirror::Class> h_class(hs.NewHandle(fields_class)); |
Ian Rogers | 7b078e8 | 2014-09-10 14:44:24 -0700 | [diff] [blame] | 394 | if (LIKELY(class_linker->EnsureInitialized(self, h_class, true, true))) { |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 395 | // Otherwise let's ensure the class is initialized before resolving the field. |
| 396 | return resolved_field; |
| 397 | } |
| 398 | DCHECK(self->IsExceptionPending()); // Throw exception and unwind |
| 399 | return nullptr; // Failure. |
| 400 | } |
| 401 | } |
| 402 | } |
| 403 | |
| 404 | // Explicit template declarations of FindFieldFromCode for all field access types. |
| 405 | #define EXPLICIT_FIND_FIELD_FROM_CODE_TEMPLATE_DECL(_type, _access_check) \ |
| 406 | template SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) ALWAYS_INLINE \ |
Mathieu Chartier | c785344 | 2015-03-27 14:35:38 -0700 | [diff] [blame] | 407 | ArtField* FindFieldFromCode<_type, _access_check>(uint32_t field_idx, \ |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 408 | ArtMethod* referrer, \ |
| 409 | Thread* self, size_t expected_size) \ |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 410 | |
| 411 | #define EXPLICIT_FIND_FIELD_FROM_CODE_TYPED_TEMPLATE_DECL(_type) \ |
| 412 | EXPLICIT_FIND_FIELD_FROM_CODE_TEMPLATE_DECL(_type, false); \ |
| 413 | EXPLICIT_FIND_FIELD_FROM_CODE_TEMPLATE_DECL(_type, true) |
| 414 | |
| 415 | EXPLICIT_FIND_FIELD_FROM_CODE_TYPED_TEMPLATE_DECL(InstanceObjectRead); |
| 416 | EXPLICIT_FIND_FIELD_FROM_CODE_TYPED_TEMPLATE_DECL(InstanceObjectWrite); |
| 417 | EXPLICIT_FIND_FIELD_FROM_CODE_TYPED_TEMPLATE_DECL(InstancePrimitiveRead); |
| 418 | EXPLICIT_FIND_FIELD_FROM_CODE_TYPED_TEMPLATE_DECL(InstancePrimitiveWrite); |
| 419 | EXPLICIT_FIND_FIELD_FROM_CODE_TYPED_TEMPLATE_DECL(StaticObjectRead); |
| 420 | EXPLICIT_FIND_FIELD_FROM_CODE_TYPED_TEMPLATE_DECL(StaticObjectWrite); |
| 421 | EXPLICIT_FIND_FIELD_FROM_CODE_TYPED_TEMPLATE_DECL(StaticPrimitiveRead); |
| 422 | EXPLICIT_FIND_FIELD_FROM_CODE_TYPED_TEMPLATE_DECL(StaticPrimitiveWrite); |
| 423 | |
| 424 | #undef EXPLICIT_FIND_FIELD_FROM_CODE_TYPED_TEMPLATE_DECL |
| 425 | #undef EXPLICIT_FIND_FIELD_FROM_CODE_TEMPLATE_DECL |
| 426 | |
| 427 | template<InvokeType type, bool access_check> |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 428 | inline ArtMethod* FindMethodFromCode(uint32_t method_idx, mirror::Object** this_object, |
| 429 | ArtMethod** referrer, Thread* self) { |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 430 | ClassLinker* const class_linker = Runtime::Current()->GetClassLinker(); |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 431 | ArtMethod* resolved_method = class_linker->GetResolvedMethod(method_idx, *referrer); |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 432 | if (resolved_method == nullptr) { |
| 433 | StackHandleScope<1> hs(self); |
| 434 | mirror::Object* null_this = nullptr; |
| 435 | HandleWrapper<mirror::Object> h_this( |
| 436 | hs.NewHandleWrapper(type == kStatic ? &null_this : this_object)); |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 437 | resolved_method = class_linker->ResolveMethod(self, method_idx, *referrer, type); |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 438 | } |
| 439 | if (UNLIKELY(resolved_method == nullptr)) { |
| 440 | DCHECK(self->IsExceptionPending()); // Throw exception and unwind. |
| 441 | return nullptr; // Failure. |
| 442 | } else if (UNLIKELY(*this_object == nullptr && type != kStatic)) { |
| 443 | // Maintain interpreter-like semantics where NullPointerException is thrown |
| 444 | // after potential NoSuchMethodError from class linker. |
Nicolas Geoffray | 0aa50ce | 2015-03-10 11:03:29 +0000 | [diff] [blame] | 445 | ThrowNullPointerExceptionForMethodAccess(method_idx, type); |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 446 | return nullptr; // Failure. |
| 447 | } else if (access_check) { |
| 448 | // Incompatible class change should have been handled in resolve method. |
| 449 | if (UNLIKELY(resolved_method->CheckIncompatibleClassChange(type))) { |
| 450 | ThrowIncompatibleClassChangeError(type, resolved_method->GetInvokeType(), resolved_method, |
| 451 | *referrer); |
| 452 | return nullptr; // Failure. |
| 453 | } |
| 454 | mirror::Class* methods_class = resolved_method->GetDeclaringClass(); |
| 455 | mirror::Class* referring_class = (*referrer)->GetDeclaringClass(); |
| 456 | bool can_access_resolved_method = |
| 457 | referring_class->CheckResolvedMethodAccess<type>(methods_class, resolved_method, |
| 458 | method_idx); |
| 459 | if (UNLIKELY(!can_access_resolved_method)) { |
| 460 | DCHECK(self->IsExceptionPending()); // Throw exception and unwind. |
| 461 | return nullptr; // Failure. |
| 462 | } |
| 463 | } |
| 464 | switch (type) { |
| 465 | case kStatic: |
| 466 | case kDirect: |
| 467 | return resolved_method; |
| 468 | case kVirtual: { |
Mingyao Yang | 2cdbad7 | 2014-07-16 10:44:41 -0700 | [diff] [blame] | 469 | mirror::Class* klass = (*this_object)->GetClass(); |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 470 | uint16_t vtable_index = resolved_method->GetMethodIndex(); |
| 471 | if (access_check && |
Mingyao Yang | 2cdbad7 | 2014-07-16 10:44:41 -0700 | [diff] [blame] | 472 | (!klass->HasVTable() || |
| 473 | vtable_index >= static_cast<uint32_t>(klass->GetVTableLength()))) { |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 474 | // Behavior to agree with that of the verifier. |
| 475 | ThrowNoSuchMethodError(type, resolved_method->GetDeclaringClass(), |
| 476 | resolved_method->GetName(), resolved_method->GetSignature()); |
| 477 | return nullptr; // Failure. |
| 478 | } |
Mingyao Yang | 2cdbad7 | 2014-07-16 10:44:41 -0700 | [diff] [blame] | 479 | DCHECK(klass->HasVTable()) << PrettyClass(klass); |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 480 | return klass->GetVTableEntry(vtable_index, class_linker->GetImagePointerSize()); |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 481 | } |
| 482 | case kSuper: { |
| 483 | mirror::Class* super_class = (*referrer)->GetDeclaringClass()->GetSuperClass(); |
| 484 | uint16_t vtable_index = resolved_method->GetMethodIndex(); |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 485 | if (access_check) { |
| 486 | // Check existence of super class. |
Mingyao Yang | 2cdbad7 | 2014-07-16 10:44:41 -0700 | [diff] [blame] | 487 | if (super_class == nullptr || !super_class->HasVTable() || |
| 488 | vtable_index >= static_cast<uint32_t>(super_class->GetVTableLength())) { |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 489 | // Behavior to agree with that of the verifier. |
| 490 | ThrowNoSuchMethodError(type, resolved_method->GetDeclaringClass(), |
| 491 | resolved_method->GetName(), resolved_method->GetSignature()); |
| 492 | return nullptr; // Failure. |
| 493 | } |
| 494 | } else { |
| 495 | // Super class must exist. |
| 496 | DCHECK(super_class != nullptr); |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 497 | } |
Mingyao Yang | 2cdbad7 | 2014-07-16 10:44:41 -0700 | [diff] [blame] | 498 | DCHECK(super_class->HasVTable()); |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 499 | return super_class->GetVTableEntry(vtable_index, class_linker->GetImagePointerSize()); |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 500 | } |
| 501 | case kInterface: { |
| 502 | uint32_t imt_index = resolved_method->GetDexMethodIndex() % mirror::Class::kImtSize; |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 503 | ArtMethod* imt_method = (*this_object)->GetClass()->GetEmbeddedImTableEntry( |
| 504 | imt_index, class_linker->GetImagePointerSize()); |
Mathieu Chartier | 2d2621a | 2014-10-23 16:48:06 -0700 | [diff] [blame] | 505 | if (!imt_method->IsImtConflictMethod() && !imt_method->IsImtUnimplementedMethod()) { |
| 506 | if (kIsDebugBuild) { |
| 507 | mirror::Class* klass = (*this_object)->GetClass(); |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 508 | ArtMethod* method = klass->FindVirtualMethodForInterface( |
| 509 | resolved_method, class_linker->GetImagePointerSize()); |
Mathieu Chartier | 2d2621a | 2014-10-23 16:48:06 -0700 | [diff] [blame] | 510 | CHECK_EQ(imt_method, method) << PrettyMethod(resolved_method) << " / " << |
| 511 | PrettyMethod(imt_method) << " / " << PrettyMethod(method) << " / " << |
| 512 | PrettyClass(klass); |
| 513 | } |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 514 | return imt_method; |
| 515 | } else { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 516 | ArtMethod* interface_method = (*this_object)->GetClass()->FindVirtualMethodForInterface( |
| 517 | resolved_method, class_linker->GetImagePointerSize()); |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 518 | if (UNLIKELY(interface_method == nullptr)) { |
| 519 | ThrowIncompatibleClassChangeErrorClassForInterfaceDispatch(resolved_method, |
| 520 | *this_object, *referrer); |
| 521 | return nullptr; // Failure. |
| 522 | } |
| 523 | return interface_method; |
| 524 | } |
| 525 | } |
| 526 | default: |
| 527 | LOG(FATAL) << "Unknown invoke type " << type; |
| 528 | return nullptr; // Failure. |
| 529 | } |
| 530 | } |
| 531 | |
| 532 | // Explicit template declarations of FindMethodFromCode for all invoke types. |
| 533 | #define EXPLICIT_FIND_METHOD_FROM_CODE_TEMPLATE_DECL(_type, _access_check) \ |
| 534 | template SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) ALWAYS_INLINE \ |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 535 | ArtMethod* FindMethodFromCode<_type, _access_check>(uint32_t method_idx, \ |
| 536 | mirror::Object** this_object, \ |
| 537 | ArtMethod** referrer, \ |
| 538 | Thread* self) |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 539 | #define EXPLICIT_FIND_METHOD_FROM_CODE_TYPED_TEMPLATE_DECL(_type) \ |
| 540 | EXPLICIT_FIND_METHOD_FROM_CODE_TEMPLATE_DECL(_type, false); \ |
| 541 | EXPLICIT_FIND_METHOD_FROM_CODE_TEMPLATE_DECL(_type, true) |
| 542 | |
| 543 | EXPLICIT_FIND_METHOD_FROM_CODE_TYPED_TEMPLATE_DECL(kStatic); |
| 544 | EXPLICIT_FIND_METHOD_FROM_CODE_TYPED_TEMPLATE_DECL(kDirect); |
| 545 | EXPLICIT_FIND_METHOD_FROM_CODE_TYPED_TEMPLATE_DECL(kVirtual); |
| 546 | EXPLICIT_FIND_METHOD_FROM_CODE_TYPED_TEMPLATE_DECL(kSuper); |
| 547 | EXPLICIT_FIND_METHOD_FROM_CODE_TYPED_TEMPLATE_DECL(kInterface); |
| 548 | |
| 549 | #undef EXPLICIT_FIND_METHOD_FROM_CODE_TYPED_TEMPLATE_DECL |
| 550 | #undef EXPLICIT_FIND_METHOD_FROM_CODE_TEMPLATE_DECL |
| 551 | |
| 552 | // Fast path field resolution that can't initialize classes or throw exceptions. |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 553 | inline ArtField* FindFieldFast(uint32_t field_idx, ArtMethod* referrer, FindFieldType type, |
| 554 | size_t expected_size) { |
Mathieu Chartier | c785344 | 2015-03-27 14:35:38 -0700 | [diff] [blame] | 555 | ArtField* resolved_field = |
| 556 | referrer->GetDeclaringClass()->GetDexCache()->GetResolvedField(field_idx, sizeof(void*)); |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 557 | if (UNLIKELY(resolved_field == nullptr)) { |
| 558 | return nullptr; |
| 559 | } |
| 560 | // Check for incompatible class change. |
| 561 | bool is_primitive; |
| 562 | bool is_set; |
| 563 | bool is_static; |
| 564 | switch (type) { |
| 565 | case InstanceObjectRead: is_primitive = false; is_set = false; is_static = false; break; |
| 566 | case InstanceObjectWrite: is_primitive = false; is_set = true; is_static = false; break; |
| 567 | case InstancePrimitiveRead: is_primitive = true; is_set = false; is_static = false; break; |
| 568 | case InstancePrimitiveWrite: is_primitive = true; is_set = true; is_static = false; break; |
| 569 | case StaticObjectRead: is_primitive = false; is_set = false; is_static = true; break; |
| 570 | case StaticObjectWrite: is_primitive = false; is_set = true; is_static = true; break; |
| 571 | case StaticPrimitiveRead: is_primitive = true; is_set = false; is_static = true; break; |
| 572 | case StaticPrimitiveWrite: is_primitive = true; is_set = true; is_static = true; break; |
| 573 | default: |
Ian Rogers | 2c4257b | 2014-10-24 14:20:06 -0700 | [diff] [blame] | 574 | LOG(FATAL) << "UNREACHABLE"; |
| 575 | UNREACHABLE(); |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 576 | } |
| 577 | if (UNLIKELY(resolved_field->IsStatic() != is_static)) { |
| 578 | // Incompatible class change. |
| 579 | return nullptr; |
| 580 | } |
| 581 | mirror::Class* fields_class = resolved_field->GetDeclaringClass(); |
| 582 | if (is_static) { |
| 583 | // Check class is initialized else fail so that we can contend to initialize the class with |
| 584 | // other threads that may be racing to do this. |
| 585 | if (UNLIKELY(!fields_class->IsInitialized())) { |
| 586 | return nullptr; |
| 587 | } |
| 588 | } |
| 589 | mirror::Class* referring_class = referrer->GetDeclaringClass(); |
| 590 | if (UNLIKELY(!referring_class->CanAccess(fields_class) || |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 591 | !referring_class->CanAccessMember(fields_class, resolved_field->GetAccessFlags()) || |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 592 | (is_set && resolved_field->IsFinal() && (fields_class != referring_class)))) { |
| 593 | // Illegal access. |
| 594 | return nullptr; |
| 595 | } |
| 596 | if (UNLIKELY(resolved_field->IsPrimitiveType() != is_primitive || |
| 597 | resolved_field->FieldSize() != expected_size)) { |
| 598 | return nullptr; |
| 599 | } |
| 600 | return resolved_field; |
| 601 | } |
| 602 | |
| 603 | // Fast path method resolution that can't throw exceptions. |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 604 | inline ArtMethod* FindMethodFast(uint32_t method_idx, mirror::Object* this_object, |
| 605 | ArtMethod* referrer, bool access_check, InvokeType type) { |
Mathieu Chartier | 2cebb24 | 2015-04-21 16:50:40 -0700 | [diff] [blame] | 606 | if (UNLIKELY(this_object == nullptr && type != kStatic)) { |
| 607 | return nullptr; |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 608 | } |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 609 | ArtMethod* resolved_method = |
| 610 | referrer->GetDeclaringClass()->GetDexCache()->GetResolvedMethod(method_idx, sizeof(void*)); |
Mathieu Chartier | 2cebb24 | 2015-04-21 16:50:40 -0700 | [diff] [blame] | 611 | if (UNLIKELY(resolved_method == nullptr)) { |
| 612 | return nullptr; |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 613 | } |
| 614 | if (access_check) { |
| 615 | // Check for incompatible class change errors and access. |
| 616 | bool icce = resolved_method->CheckIncompatibleClassChange(type); |
| 617 | if (UNLIKELY(icce)) { |
Mathieu Chartier | 2cebb24 | 2015-04-21 16:50:40 -0700 | [diff] [blame] | 618 | return nullptr; |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 619 | } |
| 620 | mirror::Class* methods_class = resolved_method->GetDeclaringClass(); |
| 621 | mirror::Class* referring_class = referrer->GetDeclaringClass(); |
| 622 | if (UNLIKELY(!referring_class->CanAccess(methods_class) || |
| 623 | !referring_class->CanAccessMember(methods_class, |
| 624 | resolved_method->GetAccessFlags()))) { |
| 625 | // Potential illegal access, may need to refine the method's class. |
Mathieu Chartier | 2cebb24 | 2015-04-21 16:50:40 -0700 | [diff] [blame] | 626 | return nullptr; |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 627 | } |
| 628 | } |
| 629 | if (type == kInterface) { // Most common form of slow path dispatch. |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 630 | return this_object->GetClass()->FindVirtualMethodForInterface(resolved_method, sizeof(void*)); |
Jeff Hao | 207a37d | 2014-10-29 17:24:25 -0700 | [diff] [blame] | 631 | } else if (type == kStatic || type == kDirect) { |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 632 | return resolved_method; |
| 633 | } else if (type == kSuper) { |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 634 | return referrer->GetDeclaringClass()->GetSuperClass()->GetVTableEntry( |
| 635 | resolved_method->GetMethodIndex(), sizeof(void*)); |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 636 | } else { |
| 637 | DCHECK(type == kVirtual); |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 638 | return this_object->GetClass()->GetVTableEntry( |
| 639 | resolved_method->GetMethodIndex(), sizeof(void*)); |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 640 | } |
| 641 | } |
| 642 | |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 643 | inline mirror::Class* ResolveVerifyAndClinit(uint32_t type_idx, ArtMethod* referrer, Thread* self, |
| 644 | bool can_run_clinit, bool verify_access) { |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 645 | ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); |
| 646 | mirror::Class* klass = class_linker->ResolveType(type_idx, referrer); |
| 647 | if (UNLIKELY(klass == nullptr)) { |
| 648 | CHECK(self->IsExceptionPending()); |
| 649 | return nullptr; // Failure - Indicate to caller to deliver exception |
| 650 | } |
| 651 | // Perform access check if necessary. |
| 652 | mirror::Class* referring_class = referrer->GetDeclaringClass(); |
| 653 | if (verify_access && UNLIKELY(!referring_class->CanAccess(klass))) { |
| 654 | ThrowIllegalAccessErrorClass(referring_class, klass); |
| 655 | return nullptr; // Failure - Indicate to caller to deliver exception |
| 656 | } |
| 657 | // If we're just implementing const-class, we shouldn't call <clinit>. |
| 658 | if (!can_run_clinit) { |
| 659 | return klass; |
| 660 | } |
| 661 | // If we are the <clinit> of this class, just return our storage. |
| 662 | // |
| 663 | // Do not set the DexCache InitializedStaticStorage, since that implies <clinit> has finished |
| 664 | // running. |
| 665 | if (klass == referring_class && referrer->IsConstructor() && referrer->IsStatic()) { |
| 666 | return klass; |
| 667 | } |
| 668 | StackHandleScope<1> hs(self); |
| 669 | Handle<mirror::Class> h_class(hs.NewHandle(klass)); |
Ian Rogers | 7b078e8 | 2014-09-10 14:44:24 -0700 | [diff] [blame] | 670 | if (!class_linker->EnsureInitialized(self, h_class, true, true)) { |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 671 | CHECK(self->IsExceptionPending()); |
| 672 | return nullptr; // Failure - Indicate to caller to deliver exception |
| 673 | } |
| 674 | return h_class.Get(); |
| 675 | } |
| 676 | |
Mathieu Chartier | e401d14 | 2015-04-22 13:56:20 -0700 | [diff] [blame] | 677 | inline mirror::String* ResolveStringFromCode(ArtMethod* referrer, uint32_t string_idx) { |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 678 | ClassLinker* class_linker = Runtime::Current()->GetClassLinker(); |
| 679 | return class_linker->ResolveString(string_idx, referrer); |
| 680 | } |
| 681 | |
Andreas Gampe | 9f612ff | 2014-11-24 13:42:22 -0800 | [diff] [blame] | 682 | inline void UnlockJniSynchronizedMethod(jobject locked, Thread* self) { |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 683 | // Save any pending exception over monitor exit call. |
Mathieu Chartier | 2cebb24 | 2015-04-21 16:50:40 -0700 | [diff] [blame] | 684 | mirror::Throwable* saved_exception = nullptr; |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 685 | if (UNLIKELY(self->IsExceptionPending())) { |
Nicolas Geoffray | 14691c5 | 2015-03-05 10:40:17 +0000 | [diff] [blame] | 686 | saved_exception = self->GetException(); |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 687 | self->ClearException(); |
| 688 | } |
| 689 | // Decode locked object and unlock, before popping local references. |
| 690 | self->DecodeJObject(locked)->MonitorExit(self); |
| 691 | if (UNLIKELY(self->IsExceptionPending())) { |
| 692 | LOG(FATAL) << "Synchronized JNI code returning with an exception:\n" |
| 693 | << saved_exception->Dump() |
| 694 | << "\nEncountered second exception during implicit MonitorExit:\n" |
Nicolas Geoffray | 14691c5 | 2015-03-05 10:40:17 +0000 | [diff] [blame] | 695 | << self->GetException()->Dump(); |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 696 | } |
| 697 | // Restore pending exception. |
Mathieu Chartier | 2cebb24 | 2015-04-21 16:50:40 -0700 | [diff] [blame] | 698 | if (saved_exception != nullptr) { |
Nicolas Geoffray | 14691c5 | 2015-03-05 10:40:17 +0000 | [diff] [blame] | 699 | self->SetException(saved_exception); |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 700 | } |
| 701 | } |
| 702 | |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 703 | template <typename INT_TYPE, typename FLOAT_TYPE> |
Andreas Gampe | 9f612ff | 2014-11-24 13:42:22 -0800 | [diff] [blame] | 704 | inline INT_TYPE art_float_to_integral(FLOAT_TYPE f) { |
Mingyao Yang | 98d1cc8 | 2014-05-15 17:02:16 -0700 | [diff] [blame] | 705 | const INT_TYPE kMaxInt = static_cast<INT_TYPE>(std::numeric_limits<INT_TYPE>::max()); |
| 706 | const INT_TYPE kMinInt = static_cast<INT_TYPE>(std::numeric_limits<INT_TYPE>::min()); |
| 707 | const FLOAT_TYPE kMaxIntAsFloat = static_cast<FLOAT_TYPE>(kMaxInt); |
| 708 | const FLOAT_TYPE kMinIntAsFloat = static_cast<FLOAT_TYPE>(kMinInt); |
| 709 | if (LIKELY(f > kMinIntAsFloat)) { |
| 710 | if (LIKELY(f < kMaxIntAsFloat)) { |
| 711 | return static_cast<INT_TYPE>(f); |
| 712 | } else { |
| 713 | return kMaxInt; |
| 714 | } |
| 715 | } else { |
| 716 | return (f != f) ? 0 : kMinInt; // f != f implies NaN |
| 717 | } |
| 718 | } |
| 719 | |
| 720 | } // namespace art |
| 721 | |
| 722 | #endif // ART_RUNTIME_ENTRYPOINTS_ENTRYPOINT_UTILS_INL_H_ |