1 /* 2 * Copyright (c) 2023 Huawei Device Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16 #ifndef MAPLEBE_INCLUDE_CG_AARCH64_AARCH64_ABI_H 17 #define MAPLEBE_INCLUDE_CG_AARCH64_AARCH64_ABI_H 18 19 #include "aarch64_isa.h" 20 #include "types_def.h" 21 #include "becommon.h" 22 23 namespace maplebe { 24 using namespace maple; 25 26 namespace AArch64Abi { 27 constexpr int32 kNumIntParmRegs = 8; 28 constexpr int32 kNumFloatParmRegs = 8; 29 constexpr int32 kYieldPointReservedReg = 19; 30 constexpr uint32 kNormalUseOperandNum = 3; 31 constexpr uint32 kMaxInstrForTbnz = 8000; // approximately less than (2^13); 32 constexpr uint32 kMaxInstrForCondBr = 260000; // approximately less than (2^18); 33 constexpr uint32 kMaxInstrForLdr = 260000; // approximately less than (2^18); 34 35 extern std::vector<AArch64reg> intReturnRegs; 36 extern std::vector<AArch64reg> floatReturnRegs; 37 extern std::vector<AArch64reg> intParmRegs; 38 extern std::vector<AArch64reg> floatParmRegs; 39 40 /* 41 * Refer to ARM IHI 0055C_beta: Procedure Call Standard for 42 * ARM 64-bit Architecture. Section 5.5 43 */ 44 bool IsAvailableReg(AArch64reg reg); 45 bool IsCalleeSavedReg(AArch64reg reg); 46 bool IsCallerSaveReg(AArch64reg reg); 47 bool IsSpillReg(AArch64reg reg); 48 bool IsExtraSpillReg(AArch64reg reg); 49 bool IsSpillRegInRA(AArch64reg regNO, bool has3RegOpnd); 50 } /* namespace AArch64Abi */ 51 52 } /* namespace maplebe */ 53 54 #endif /* MAPLEBE_INCLUDE_CG_AARCH64_AARCH64_ABI_H */ 55