52 lines
1.8 KiB
C++
52 lines
1.8 KiB
C++
/*
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* Copyright (C) 2012 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "art_method-inl.h"
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#include "base/logging.h"
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#include "entrypoints/entrypoint_utils.h"
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#include "java_vm_ext.h"
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#include "mirror/object-inl.h"
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#include "scoped_thread_state_change-inl.h"
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#include "thread.h"
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namespace art {
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// Used by the JNI dlsym stub to find the native method to invoke if none is registered.
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#if defined(__arm__) || defined(__aarch64__)
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extern "C" const void* artFindNativeMethod() {
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Thread* self = Thread::Current();
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#else
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extern "C" const void* artFindNativeMethod(Thread* self) {
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DCHECK_EQ(self, Thread::Current());
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#endif
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Locks::mutator_lock_->AssertNotHeld(self); // We come here as Native.
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ScopedObjectAccess soa(self);
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ArtMethod* method = self->GetCurrentMethod(nullptr);
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DCHECK(method != nullptr);
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// Lookup symbol address for method, on failure we'll return null with an exception set,
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// otherwise we return the address of the method we found.
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void* native_code = soa.Vm()->FindCodeForNativeMethod(method);
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if (native_code == nullptr) {
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self->AssertPendingException();
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return nullptr;
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}
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// Register so that future calls don't come here
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return method->RegisterNative(native_code, false);
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}
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} // namespace art
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