1 /* 2 * Copyright (C) 2014 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_COMPILER_JNI_QUICK_ARM64_CALLING_CONVENTION_ARM64_H_ 18 #define ART_COMPILER_JNI_QUICK_ARM64_CALLING_CONVENTION_ARM64_H_ 19 20 #include "base/enums.h" 21 #include "jni/quick/calling_convention.h" 22 23 namespace art { 24 namespace arm64 { 25 26 class Arm64ManagedRuntimeCallingConvention final : public ManagedRuntimeCallingConvention { 27 public: Arm64ManagedRuntimeCallingConvention(bool is_static,bool is_synchronized,const char * shorty)28 Arm64ManagedRuntimeCallingConvention(bool is_static, bool is_synchronized, const char* shorty) 29 : ManagedRuntimeCallingConvention(is_static, 30 is_synchronized, 31 shorty, 32 PointerSize::k64) {} ~Arm64ManagedRuntimeCallingConvention()33 ~Arm64ManagedRuntimeCallingConvention() override {} 34 // Calling convention 35 ManagedRegister ReturnRegister() const override; 36 // Managed runtime calling convention 37 ManagedRegister MethodRegister() override; 38 bool IsCurrentParamInRegister() override; 39 bool IsCurrentParamOnStack() override; 40 ManagedRegister CurrentParamRegister() override; 41 FrameOffset CurrentParamStackOffset() override; 42 43 private: 44 DISALLOW_COPY_AND_ASSIGN(Arm64ManagedRuntimeCallingConvention); 45 }; 46 47 class Arm64JniCallingConvention final : public JniCallingConvention { 48 public: 49 Arm64JniCallingConvention(bool is_static, 50 bool is_synchronized, 51 bool is_fast_native, 52 bool is_critical_native, 53 const char* shorty); ~Arm64JniCallingConvention()54 ~Arm64JniCallingConvention() override {} 55 // Calling convention 56 ManagedRegister ReturnRegister() const override; 57 ManagedRegister IntReturnRegister() const override; 58 // JNI calling convention 59 size_t FrameSize() const override; 60 size_t OutFrameSize() const override; 61 ArrayRef<const ManagedRegister> CalleeSaveRegisters() const override; 62 ArrayRef<const ManagedRegister> CalleeSaveScratchRegisters() const override; 63 ArrayRef<const ManagedRegister> ArgumentScratchRegisters() const override; 64 uint32_t CoreSpillMask() const override; 65 uint32_t FpSpillMask() const override; 66 bool IsCurrentParamInRegister() override; 67 bool IsCurrentParamOnStack() override; 68 ManagedRegister CurrentParamRegister() override; 69 FrameOffset CurrentParamStackOffset() override; 70 71 // aarch64 calling convention leaves upper bits undefined. RequiresSmallResultTypeExtension()72 bool RequiresSmallResultTypeExtension() const override { 73 return HasSmallReturnType(); 74 } 75 76 // Locking argument register, used to pass the synchronization object for calls 77 // to `JniLockObject()` and `JniUnlockObject()`. 78 ManagedRegister LockingArgumentRegister() const override; 79 80 // Hidden argument register, used to pass the method pointer for @CriticalNative call. 81 ManagedRegister HiddenArgumentRegister() const override; 82 83 // Whether to use tail call (used only for @CriticalNative). 84 bool UseTailCall() const override; 85 86 private: 87 DISALLOW_COPY_AND_ASSIGN(Arm64JniCallingConvention); 88 }; 89 90 } // namespace arm64 91 } // namespace art 92 93 #endif // ART_COMPILER_JNI_QUICK_ARM64_CALLING_CONVENTION_ARM64_H_ 94