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_PROEPILOG_H 17 #define MAPLEBE_INCLUDE_CG_PROEPILOG_H 18 #include "cg_phase.h" 19 #include "cgfunc.h" 20 #include "insn.h" 21 22 namespace maplebe { 23 class GenProEpilog { 24 public: GenProEpilog(CGFunc & func)25 explicit GenProEpilog(CGFunc &func) : cgFunc(func) {} 26 27 virtual ~GenProEpilog() = default; 28 Run()29 virtual void Run() {} 30 PhaseName()31 std::string PhaseName() const 32 { 33 return "generateproepilog"; 34 } 35 NeedProEpilog()36 virtual bool NeedProEpilog() 37 { 38 return true; 39 } 40 41 /* CFI related routines */ GetOffsetFromCFA()42 int64 GetOffsetFromCFA() const 43 { 44 return offsetFromCfa; 45 } 46 47 /* add increment (can be negative) and return the new value */ AddtoOffsetFromCFA(int64 delta)48 int64 AddtoOffsetFromCFA(int64 delta) 49 { 50 offsetFromCfa += delta; 51 return offsetFromCfa; 52 } 53 54 protected: 55 CGFunc &cgFunc; 56 int64 offsetFromCfa = 0; /* SP offset from Call Frame Address */ 57 }; 58 } /* namespace maplebe */ 59 60 #endif /* MAPLEBE_INCLUDE_CG_PROEPILOG_H */ 61