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      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 #include "art_method-inl.h"
     18 #include "callee_save_frame.h"
     19 #include "entrypoints/entrypoint_utils-inl.h"
     20 #include "class_linker-inl.h"
     21 #include "dex_file-inl.h"
     22 #include "gc/accounting/card_table-inl.h"
     23 #include "mirror/object_array-inl.h"
     24 #include "mirror/object-inl.h"
     25 
     26 namespace art {
     27 
     28 extern "C" mirror::Class* artInitializeStaticStorageFromCode(uint32_t type_idx, Thread* self)
     29     SHARED_REQUIRES(Locks::mutator_lock_) {
     30   // Called to ensure static storage base is initialized for direct static field reads and writes.
     31   // A class may be accessing another class' fields when it doesn't have access, as access has been
     32   // given by inheritance.
     33   ScopedQuickEntrypointChecks sqec(self);
     34   auto* caller = GetCalleeSaveMethodCaller(self, Runtime::kRefsOnly);
     35   return ResolveVerifyAndClinit(type_idx, caller, self, true, false);
     36 }
     37 
     38 extern "C" mirror::Class* artInitializeTypeFromCode(uint32_t type_idx, Thread* self)
     39     SHARED_REQUIRES(Locks::mutator_lock_) {
     40   // Called when method->dex_cache_resolved_types_[] misses.
     41   ScopedQuickEntrypointChecks sqec(self);
     42   auto* caller = GetCalleeSaveMethodCaller(self, Runtime::kRefsOnly);
     43   return ResolveVerifyAndClinit(type_idx, caller, self, false, false);
     44 }
     45 
     46 extern "C" mirror::Class* artInitializeTypeAndVerifyAccessFromCode(uint32_t type_idx, Thread* self)
     47     SHARED_REQUIRES(Locks::mutator_lock_) {
     48   // Called when caller isn't guaranteed to have access to a type and the dex cache may be
     49   // unpopulated.
     50   ScopedQuickEntrypointChecks sqec(self);
     51   auto* caller = GetCalleeSaveMethodCaller(self, Runtime::kRefsOnly);
     52   return ResolveVerifyAndClinit(type_idx, caller, self, false, true);
     53 }
     54 
     55 extern "C" mirror::String* artResolveStringFromCode(int32_t string_idx, Thread* self)
     56     SHARED_REQUIRES(Locks::mutator_lock_) {
     57   ScopedQuickEntrypointChecks sqec(self);
     58   auto* caller = GetCalleeSaveMethodCaller(self, Runtime::kRefsOnly);
     59   return ResolveStringFromCode(caller, string_idx);
     60 }
     61 
     62 }  // namespace art
     63