1 /* 2 * Copyright (C) 2020 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 #ifndef ART_RUNTIME_INTERPRETER_MTERP_NTERP_H_ 18 #define ART_RUNTIME_INTERPRETER_MTERP_NTERP_H_ 19 20 #include "base/globals.h" 21 22 extern "C" void* artNterpAsmInstructionStart[]; 23 extern "C" void* artNterpAsmInstructionEnd[]; 24 25 namespace art { 26 27 class ArtMethod; 28 29 namespace interpreter { 30 31 void CheckNterpAsmConstants(); 32 bool IsNterpSupported(); 33 bool CanRuntimeUseNterp(); 34 bool CanMethodUseNterp(ArtMethod* method); 35 const void* GetNterpEntryPoint(); 36 37 // The hotness threshold where we trigger JIT compilation or OSR. 38 constexpr uint16_t kNterpHotnessMask = 0xffff; 39 40 // The maximum we allow an nterp frame to be. 41 constexpr size_t kNterpMaxFrame = 3 * KB; 42 43 // The maximum size for each nterp opcode handler. 44 constexpr size_t kNterpHandlerSize = 128; 45 46 } // namespace interpreter 47 } // namespace art 48 49 #endif // ART_RUNTIME_INTERPRETER_MTERP_NTERP_H_ 50