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