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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_COMPILER_UTILS_MANAGED_REGISTER_H_
#define ART_COMPILER_UTILS_MANAGED_REGISTER_H_
#include <vector>
namespace art {
namespace arm {
class ArmManagedRegister;
}
namespace arm64 {
class Arm64ManagedRegister;
}
namespace mips {
class MipsManagedRegister;
}
namespace mips64 {
class Mips64ManagedRegister;
}
namespace x86 {
class X86ManagedRegister;
}
namespace x86_64 {
class X86_64ManagedRegister;
}
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;
arm64::Arm64ManagedRegister AsArm64() const;
mips::MipsManagedRegister AsMips() const;
mips64::Mips64ManagedRegister AsMips64() const;
x86::X86ManagedRegister AsX86() const;
x86_64::X86_64ManagedRegister AsX86_64() 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();
}
int RegId() const { return id_; }
explicit ManagedRegister(int reg_id) : id_(reg_id) { }
protected:
static const int kNoRegister = -1;
ManagedRegister() : id_(kNoRegister) { }
int id_;
};
class ManagedRegisterSpill : public ManagedRegister {
public:
// ManagedRegisterSpill contains information about data type size and location in caller frame
// These additional attributes could be defined by calling convention (EntrySpills)
ManagedRegisterSpill(const ManagedRegister& other, uint32_t size, uint32_t spill_offset)
: ManagedRegister(other), size_(size), spill_offset_(spill_offset) { }
explicit ManagedRegisterSpill(const ManagedRegister& other)
: ManagedRegister(other), size_(-1), spill_offset_(-1) { }
ManagedRegisterSpill(const ManagedRegister& other, int32_t size)
: ManagedRegister(other), size_(size), spill_offset_(-1) { }
int32_t getSpillOffset() {
return spill_offset_;
}
int32_t getSize() {
return size_;
}
private:
int32_t size_;
int32_t spill_offset_;
};
class ManagedRegisterEntrySpills : public std::vector<ManagedRegisterSpill> {
public:
// The ManagedRegister does not have information about size and offset.
// In this case it's size and offset determined by BuildFrame (assembler)
void push_back(ManagedRegister __x) {
ManagedRegisterSpill spill(__x);
std::vector<ManagedRegisterSpill>::push_back(spill);
}
void push_back(ManagedRegister __x, int32_t __size) {
ManagedRegisterSpill spill(__x, __size);
std::vector<ManagedRegisterSpill>::push_back(spill);
}
void push_back(ManagedRegisterSpill __x) {
std::vector<ManagedRegisterSpill>::push_back(__x);
}
private:
};
} // namespace art
#endif // ART_COMPILER_UTILS_MANAGED_REGISTER_H_
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