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 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 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
