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 "callee_save_frame.h"
18 #include "instruction_set.h"
19 #include "instrumentation.h"
20 #include "mirror/art_method-inl.h"
21 #include "mirror/object-inl.h"
22 #include "runtime.h"
23 #include "thread-inl.h"
24
25 namespace art {
26
artInstrumentationMethodEntryFromCode(mirror::ArtMethod * method,mirror::Object * this_object,Thread * self,StackReference<mirror::ArtMethod> * sp,uintptr_t lr)27 extern "C" const void* artInstrumentationMethodEntryFromCode(mirror::ArtMethod* method,
28 mirror::Object* this_object,
29 Thread* self,
30 StackReference<mirror::ArtMethod>* sp,
31 uintptr_t lr)
32 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
33 FinishCalleeSaveFrameSetup(self, sp, Runtime::kRefsAndArgs);
34 instrumentation::Instrumentation* instrumentation = Runtime::Current()->GetInstrumentation();
35 const void* result;
36 if (instrumentation->IsDeoptimized(method)) {
37 result = GetQuickToInterpreterBridge();
38 } else {
39 result = instrumentation->GetQuickCodeFor(method, sizeof(void*));
40 }
41 DCHECK((result != Runtime::Current()->GetClassLinker()->GetQuickToInterpreterBridgeTrampoline())
42 || !Runtime::Current()->GetHeap()->HasImageSpace());
43 bool interpreter_entry = (result == GetQuickToInterpreterBridge());
44 instrumentation->PushInstrumentationStackFrame(self, method->IsStatic() ? nullptr : this_object,
45 method, lr, interpreter_entry);
46 CHECK(result != NULL) << PrettyMethod(method);
47 return result;
48 }
49
artInstrumentationMethodExitFromCode(Thread * self,StackReference<mirror::ArtMethod> * sp,uint64_t gpr_result,uint64_t fpr_result)50 extern "C" TwoWordReturn artInstrumentationMethodExitFromCode(Thread* self,
51 StackReference<mirror::ArtMethod>* sp,
52 uint64_t gpr_result,
53 uint64_t fpr_result)
54 SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
55 // TODO: use FinishCalleeSaveFrameSetup(self, sp, Runtime::kRefsOnly) not the hand inlined below.
56 // We use the hand inline version to ensure the return_pc is assigned before verifying the
57 // stack.
58 // Be aware the store below may well stomp on an incoming argument.
59 Locks::mutator_lock_->AssertSharedHeld(self);
60 Runtime* runtime = Runtime::Current();
61 sp->Assign(runtime->GetCalleeSaveMethod(Runtime::kRefsOnly));
62 uint32_t return_pc_offset = GetCalleeSavePCOffset(kRuntimeISA, Runtime::kRefsOnly);
63 uintptr_t* return_pc = reinterpret_cast<uintptr_t*>(reinterpret_cast<byte*>(sp) +
64 return_pc_offset);
65 CHECK_EQ(*return_pc, 0U);
66 self->SetTopOfStack(sp, 0);
67 self->VerifyStack();
68 instrumentation::Instrumentation* instrumentation = Runtime::Current()->GetInstrumentation();
69 TwoWordReturn return_or_deoptimize_pc = instrumentation->PopInstrumentationStackFrame(
70 self, return_pc, gpr_result, fpr_result);
71 self->VerifyStack();
72 return return_or_deoptimize_pc;
73 }
74
75 } // namespace art
76