/*
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* Copyright (C) 2017 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ART_RUNTIME_BASE_CALLEE_SAVE_TYPE_H_
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#define ART_RUNTIME_BASE_CALLEE_SAVE_TYPE_H_
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#include <cstdint>
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#include <iosfwd>
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namespace art {
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// Returns a special method that describes all callee saves being spilled to the stack.
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enum class CalleeSaveType : uint32_t {
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kSaveAllCalleeSaves, // All callee-save registers.
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kSaveRefsOnly, // Only those callee-save registers that can hold references.
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kSaveRefsAndArgs, // References (see above) and arguments (usually caller-save registers).
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kSaveEverything, // All registers, including both callee-save and caller-save.
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kSaveEverythingForClinit, // Special kSaveEverything for clinit.
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kSaveEverythingForSuspendCheck, // Special kSaveEverything for suspend check.
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kLastCalleeSaveType // Value used for iteration.
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};
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std::ostream& operator<<(std::ostream& os, const CalleeSaveType& rhs);
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static inline constexpr CalleeSaveType GetCanonicalCalleeSaveType(CalleeSaveType type) {
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if (type == CalleeSaveType::kSaveEverythingForClinit ||
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type == CalleeSaveType::kSaveEverythingForSuspendCheck) {
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return CalleeSaveType::kSaveEverything;
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}
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return type;
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}
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} // namespace art
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#endif // ART_RUNTIME_BASE_CALLEE_SAVE_TYPE_H_
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