1 /* 2 * Copyright (C) 2017 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_LIBARTBASE_BASE_CALLEE_SAVE_TYPE_H_ 18 #define ART_LIBARTBASE_BASE_CALLEE_SAVE_TYPE_H_ 19 20 #include <cstddef> 21 #include <ostream> 22 23 namespace art { 24 25 // Returns a special method that describes all callee saves being spilled to the stack. 26 enum class CalleeSaveType : uint32_t { 27 kSaveAllCalleeSaves, // All callee-save registers. 28 kSaveRefsOnly, // Only those callee-save registers that can hold references. 29 kSaveRefsAndArgs, // References (see above) and arguments (usually caller-save registers). 30 kSaveEverything, // All registers, including both callee-save and caller-save. 31 kSaveEverythingForClinit, // Special kSaveEverything for clinit. 32 kSaveEverythingForSuspendCheck, // Special kSaveEverything for suspend check. 33 kLastCalleeSaveType // Value used for iteration. 34 }; 35 std::ostream& operator<<(std::ostream& os, const CalleeSaveType& rhs); 36 37 static inline constexpr CalleeSaveType GetCanonicalCalleeSaveType(CalleeSaveType type) { 38 if (type == CalleeSaveType::kSaveEverythingForClinit || 39 type == CalleeSaveType::kSaveEverythingForSuspendCheck) { 40 return CalleeSaveType::kSaveEverything; 41 } 42 return type; 43 } 44 45 } // namespace art 46 47 #endif // ART_LIBARTBASE_BASE_CALLEE_SAVE_TYPE_H_ 48
