1 /* 2 * Copyright (C) 2011 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_ARM_CALLING_CONVENTION_ARM_H_ 18 #define ART_COMPILER_JNI_QUICK_ARM_CALLING_CONVENTION_ARM_H_ 19 20 #include "base/enums.h" 21 #include "jni/quick/calling_convention.h" 22 23 namespace art { 24 namespace arm { 25 26 class ArmManagedRuntimeCallingConvention final : public ManagedRuntimeCallingConvention { 27 public: ArmManagedRuntimeCallingConvention(bool is_static,bool is_synchronized,const char * shorty)28 ArmManagedRuntimeCallingConvention(bool is_static, bool is_synchronized, const char* shorty) 29 : ManagedRuntimeCallingConvention(is_static, 30 is_synchronized, 31 shorty, 32 PointerSize::k32), 33 gpr_index_(1u), // Skip r0 for ArtMethod* 34 float_index_(0u), 35 double_index_(0u) {} ~ArmManagedRuntimeCallingConvention()36 ~ArmManagedRuntimeCallingConvention() override {} 37 // Calling convention 38 ManagedRegister ReturnRegister() override; 39 void ResetIterator(FrameOffset displacement) override; 40 // Managed runtime calling convention 41 ManagedRegister MethodRegister() override; 42 void Next() override; 43 bool IsCurrentParamInRegister() override; 44 bool IsCurrentParamOnStack() override; 45 ManagedRegister CurrentParamRegister() override; 46 FrameOffset CurrentParamStackOffset() override; 47 48 private: 49 size_t gpr_index_; 50 size_t float_index_; 51 size_t double_index_; 52 DISALLOW_COPY_AND_ASSIGN(ArmManagedRuntimeCallingConvention); 53 }; 54 55 class ArmJniCallingConvention final : public JniCallingConvention { 56 public: 57 ArmJniCallingConvention(bool is_static, 58 bool is_synchronized, 59 bool is_critical_native, 60 const char* shorty); ~ArmJniCallingConvention()61 ~ArmJniCallingConvention() override {} 62 // Calling convention 63 ManagedRegister ReturnRegister() override; 64 ManagedRegister IntReturnRegister() override; 65 // JNI calling convention 66 void Next() override; // Override default behavior for AAPCS 67 size_t FrameSize() const override; 68 size_t OutFrameSize() const override; 69 ArrayRef<const ManagedRegister> CalleeSaveRegisters() const override; 70 ManagedRegister ReturnScratchRegister() const override; 71 uint32_t CoreSpillMask() const override; 72 uint32_t FpSpillMask() const override; 73 bool IsCurrentParamInRegister() override; 74 bool IsCurrentParamOnStack() override; 75 ManagedRegister CurrentParamRegister() override; 76 FrameOffset CurrentParamStackOffset() override; 77 78 // AAPCS mandates return values are extended. RequiresSmallResultTypeExtension()79 bool RequiresSmallResultTypeExtension() const override { 80 return false; 81 } 82 83 // Hidden argument register, used to pass the method pointer for @CriticalNative call. 84 ManagedRegister HiddenArgumentRegister() const override; 85 86 // Whether to use tail call (used only for @CriticalNative). 87 bool UseTailCall() const override; 88 89 private: 90 // Padding to ensure longs and doubles are not split in AAPCS 91 size_t padding_; 92 93 DISALLOW_COPY_AND_ASSIGN(ArmJniCallingConvention); 94 }; 95 96 } // namespace arm 97 } // namespace art 98 99 #endif // ART_COMPILER_JNI_QUICK_ARM_CALLING_CONVENTION_ARM_H_ 100