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_MIPS_CALLING_CONVENTION_MIPS_H_ 18 #define ART_COMPILER_JNI_QUICK_MIPS_CALLING_CONVENTION_MIPS_H_ 19 20 #include "base/enums.h" 21 #include "jni/quick/calling_convention.h" 22 23 namespace art { 24 namespace mips { 25 26 constexpr size_t kFramePointerSize = 4; 27 static_assert(kFramePointerSize == static_cast<size_t>(PointerSize::k32), 28 "Invalid frame pointer size"); 29 30 class MipsManagedRuntimeCallingConvention final : public ManagedRuntimeCallingConvention { 31 public: MipsManagedRuntimeCallingConvention(bool is_static,bool is_synchronized,const char * shorty)32 MipsManagedRuntimeCallingConvention(bool is_static, bool is_synchronized, const char* shorty) 33 : ManagedRuntimeCallingConvention(is_static, 34 is_synchronized, 35 shorty, 36 PointerSize::k32) {} ~MipsManagedRuntimeCallingConvention()37 ~MipsManagedRuntimeCallingConvention() override {} 38 // Calling convention 39 ManagedRegister ReturnRegister() override; 40 ManagedRegister InterproceduralScratchRegister() override; 41 // Managed runtime calling convention 42 ManagedRegister MethodRegister() override; 43 bool IsCurrentParamInRegister() override; 44 bool IsCurrentParamOnStack() override; 45 ManagedRegister CurrentParamRegister() override; 46 FrameOffset CurrentParamStackOffset() override; 47 const ManagedRegisterEntrySpills& EntrySpills() override; 48 49 private: 50 ManagedRegisterEntrySpills entry_spills_; 51 52 DISALLOW_COPY_AND_ASSIGN(MipsManagedRuntimeCallingConvention); 53 }; 54 55 class MipsJniCallingConvention final : public JniCallingConvention { 56 public: 57 MipsJniCallingConvention(bool is_static, 58 bool is_synchronized, 59 bool is_critical_native, 60 const char* shorty); ~MipsJniCallingConvention()61 ~MipsJniCallingConvention() override {} 62 // Calling convention 63 ManagedRegister ReturnRegister() override; 64 ManagedRegister IntReturnRegister() override; 65 ManagedRegister InterproceduralScratchRegister() override; 66 // JNI calling convention 67 void Next() override; // Override default behavior for o32. 68 size_t FrameSize() override; 69 size_t OutArgSize() override; 70 ArrayRef<const ManagedRegister> CalleeSaveRegisters() const override; 71 ManagedRegister ReturnScratchRegister() const override; 72 uint32_t CoreSpillMask() const override; 73 uint32_t FpSpillMask() const override; 74 bool IsCurrentParamInRegister() override; 75 bool IsCurrentParamOnStack() override; 76 ManagedRegister CurrentParamRegister() override; 77 FrameOffset CurrentParamStackOffset() override; 78 79 // Mips does not need to extend small return types. RequiresSmallResultTypeExtension()80 bool RequiresSmallResultTypeExtension() const override { 81 return false; 82 } 83 84 protected: 85 size_t NumberOfOutgoingStackArgs() override; 86 87 private: 88 // Padding to ensure longs and doubles are not split in o32. 89 size_t padding_; 90 bool use_fp_arg_registers_; 91 92 DISALLOW_COPY_AND_ASSIGN(MipsJniCallingConvention); 93 }; 94 95 } // namespace mips 96 } // namespace art 97 98 #endif // ART_COMPILER_JNI_QUICK_MIPS_CALLING_CONVENTION_MIPS_H_ 99