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