blob: a4083a4f8168bb1f26f2e5f0b728238a4980569a [file] [log] [blame]
/*
* Copyright (C) 2012 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <android-base/logging.h>
#include "art_method-inl.h"
#include "entrypoints/entrypoint_utils.h"
#include "jni/java_vm_ext.h"
#include "mirror/object-inl.h"
#include "scoped_thread_state_change-inl.h"
#include "thread.h"
namespace art {
// Used by the JNI dlsym stub to find the native method to invoke if none is registered.
#if defined(__arm__) || defined(__aarch64__)
extern "C" const void* artFindNativeMethod() {
Thread* self = Thread::Current();
#else
extern "C" const void* artFindNativeMethod(Thread* self) {
DCHECK_EQ(self, Thread::Current());
#endif
Locks::mutator_lock_->AssertNotHeld(self); // We come here as Native.
ScopedObjectAccess soa(self);
ArtMethod* method = self->GetCurrentMethod(nullptr);
DCHECK(method != nullptr);
// Lookup symbol address for method, on failure we'll return null with an exception set,
// otherwise we return the address of the method we found.
void* native_code = soa.Vm()->FindCodeForNativeMethod(method);
if (native_code == nullptr) {
self->AssertPendingException();
return nullptr;
}
// Register so that future calls don't come here
return method->RegisterNative(native_code);
}
} // namespace art