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/*
* 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 "base/logging.h"
#include "entrypoints/entrypoint_utils.h"
#include "mirror/art_method-inl.h"
#include "mirror/object-inl.h"
#include "object_utils.h"
#include "scoped_thread_state_change.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" void* artFindNativeMethod() {
Thread* self = Thread::Current();
#else
extern "C" void* artFindNativeMethod(Thread* self) {
DCHECK_EQ(self, Thread::Current());
#endif
Locks::mutator_lock_->AssertNotHeld(self); // We come here as Native.
ScopedObjectAccess soa(self);
mirror::ArtMethod* method = self->GetCurrentMethod(NULL);
DCHECK(method != NULL);
// 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 == NULL) {
DCHECK(self->IsExceptionPending());
return NULL;
} else {
// Register so that future calls don't come here
method->RegisterNative(self, native_code, false);
return native_code;
}
}
} // namespace art
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