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 "base/logging.h"
19 #include "callee_save_frame.h"
20 #include "dex_file-inl.h"
21 #include "interpreter/interpreter.h"
22 #include "mirror/class-inl.h"
23 #include "mirror/object_array-inl.h"
24 #include "mirror/object-inl.h"
25 #include "quick_exception_handler.h"
26 #include "stack.h"
27 #include "thread.h"
28 #include "verifier/method_verifier.h"
29
30 namespace art {
31
artDeoptimize(Thread * self)32 extern "C" NO_RETURN void artDeoptimize(Thread* self) SHARED_REQUIRES(Locks::mutator_lock_) {
33 ScopedQuickEntrypointChecks sqec(self);
34
35 if (VLOG_IS_ON(deopt)) {
36 LOG(INFO) << "Deopting:";
37 self->Dump(LOG(INFO));
38 }
39
40 self->AssertHasDeoptimizationContext();
41 self->SetException(Thread::GetDeoptimizationException());
42 self->QuickDeliverException();
43 }
44
artDeoptimizeFromCompiledCode(Thread * self)45 extern "C" NO_RETURN void artDeoptimizeFromCompiledCode(Thread* self)
46 SHARED_REQUIRES(Locks::mutator_lock_) {
47 ScopedQuickEntrypointChecks sqec(self);
48
49 // Deopt logging will be in DeoptimizeSingleFrame. It is there to take advantage of the
50 // specialized visitor that will show whether a method is Quick or Shadow.
51
52 // Before deoptimizing to interpreter, we must push the deoptimization context.
53 JValue return_value;
54 return_value.SetJ(0); // we never deoptimize from compiled code with an invoke result.
55 self->PushDeoptimizationContext(return_value, false, /* from_code */ true, self->GetException());
56
57 QuickExceptionHandler exception_handler(self, true);
58 exception_handler.DeoptimizeSingleFrame();
59 exception_handler.UpdateInstrumentationStack();
60 exception_handler.DeoptimizeSingleFrameArchDependentFixup();
61 // We cannot smash the caller-saves, as we need the ArtMethod in a parameter register that would
62 // be caller-saved. This has the downside that we cannot track incorrect register usage down the
63 // line.
64 exception_handler.DoLongJump(false);
65 }
66
67 } // namespace art
68