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/*
* Copyright (C) 2011 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_SRC_OAT_UTILS_MANAGED_REGISTER_H_
#define ART_SRC_OAT_UTILS_MANAGED_REGISTER_H_
namespace art {
namespace arm {
class ArmManagedRegister;
}
namespace mips {
class MipsManagedRegister;
}
namespace x86 {
class X86ManagedRegister;
}
class ManagedRegister {
public:
// ManagedRegister is a value class. There exists no method to change the
// internal state. We therefore allow a copy constructor and an
// assignment-operator.
ManagedRegister(const ManagedRegister& other) : id_(other.id_) { }
ManagedRegister& operator=(const ManagedRegister& other) {
id_ = other.id_;
return *this;
}
arm::ArmManagedRegister AsArm() const;
mips::MipsManagedRegister AsMips() const;
x86::X86ManagedRegister AsX86() const;
// It is valid to invoke Equals on and with a NoRegister.
bool Equals(const ManagedRegister& other) const {
return id_ == other.id_;
}
bool IsNoRegister() const {
return id_ == kNoRegister;
}
static ManagedRegister NoRegister() {
return ManagedRegister();
}
protected:
static const int kNoRegister = -1;
ManagedRegister() : id_(kNoRegister) { }
explicit ManagedRegister(int reg_id) : id_(reg_id) { }
int id_;
};
} // namespace art
#endif // ART_SRC_OAT_UTILS_MANAGED_REGISTER_H_
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