| /* |
| * 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 "callee_save_frame.h" |
| #include "entrypoints/runtime_asm_entrypoints.h" |
| #include "instrumentation.h" |
| #include "mirror/art_method-inl.h" |
| #include "mirror/object-inl.h" |
| #include "runtime.h" |
| #include "thread-inl.h" |
| |
| namespace art { |
| |
| extern "C" const void* artInstrumentationMethodEntryFromCode(mirror::ArtMethod* method, |
| mirror::Object* this_object, |
| Thread* self, |
| uintptr_t lr) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| ScopedQuickEntrypointChecks sqec(self); |
| instrumentation::Instrumentation* instrumentation = Runtime::Current()->GetInstrumentation(); |
| const void* result; |
| if (instrumentation->IsDeoptimized(method)) { |
| result = GetQuickToInterpreterBridge(); |
| } else { |
| result = instrumentation->GetQuickCodeFor(method); |
| DCHECK(!Runtime::Current()->GetClassLinker()->IsQuickToInterpreterBridge(result)); |
| } |
| bool interpreter_entry = (result == GetQuickToInterpreterBridge()); |
| instrumentation->PushInstrumentationStackFrame(self, method->IsStatic() ? nullptr : this_object, |
| method, lr, interpreter_entry); |
| CHECK(result != NULL) << PrettyMethod(method); |
| return result; |
| } |
| |
| extern "C" TwoWordReturn artInstrumentationMethodExitFromCode(Thread* self, |
| StackReference<mirror::ArtMethod>* sp, |
| uint64_t gpr_result, |
| uint64_t fpr_result) |
| SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) { |
| // Compute address of return PC and sanity check that it currently holds 0. |
| size_t return_pc_offset = GetCalleeSaveReturnPcOffset(kRuntimeISA, Runtime::kRefsOnly); |
| uintptr_t* return_pc = reinterpret_cast<uintptr_t*>(reinterpret_cast<uint8_t*>(sp) + |
| return_pc_offset); |
| CHECK_EQ(*return_pc, 0U); |
| |
| // Pop the frame filling in the return pc. The low half of the return value is 0 when |
| // deoptimization shouldn't be performed with the high-half having the return address. When |
| // deoptimization should be performed the low half is zero and the high-half the address of the |
| // deoptimization entry point. |
| instrumentation::Instrumentation* instrumentation = Runtime::Current()->GetInstrumentation(); |
| TwoWordReturn return_or_deoptimize_pc = instrumentation->PopInstrumentationStackFrame( |
| self, return_pc, gpr_result, fpr_result); |
| return return_or_deoptimize_pc; |
| } |
| |
| } // namespace art |