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/*
* Copyright (C) 2012 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_JVALUE_H_
#define ART_RUNTIME_JVALUE_H_
#include "base/macros.h"
#include "base/mutex.h"
#include <stdint.h>
#include "obj_ptr.h"
namespace art {
namespace mirror {
class Object;
} // namespace mirror
union PACKED(alignof(mirror::Object*)) JValue {
// We default initialize JValue instances to all-zeros.
JValue() : j(0) {}
int8_t GetB() const { return b; }
void SetB(int8_t new_b) {
j = ((static_cast<int64_t>(new_b) << 56) >> 56); // Sign-extend to 64 bits.
}
uint16_t GetC() const { return c; }
void SetC(uint16_t new_c) {
j = static_cast<int64_t>(new_c); // Zero-extend to 64 bits.
}
double GetD() const { return d; }
void SetD(double new_d) { d = new_d; }
float GetF() const { return f; }
void SetF(float new_f) { f = new_f; }
int32_t GetI() const { return i; }
void SetI(int32_t new_i) {
j = ((static_cast<int64_t>(new_i) << 32) >> 32); // Sign-extend to 64 bits.
}
int64_t GetJ() const { return j; }
void SetJ(int64_t new_j) { j = new_j; }
mirror::Object* GetL() const REQUIRES_SHARED(Locks::mutator_lock_) {
return l;
}
void SetL(ObjPtr<mirror::Object> new_l) REQUIRES_SHARED(Locks::mutator_lock_);
int16_t GetS() const { return s; }
void SetS(int16_t new_s) {
j = ((static_cast<int64_t>(new_s) << 48) >> 48); // Sign-extend to 64 bits.
}
uint8_t GetZ() const { return z; }
void SetZ(uint8_t new_z) {
j = static_cast<int64_t>(new_z); // Zero-extend to 64 bits.
}
mirror::Object** GetGCRoot() { return &l; }
private:
uint8_t z;
int8_t b;
uint16_t c;
int16_t s;
int32_t i;
int64_t j;
float f;
double d;
mirror::Object* l;
};
} // namespace art
#endif // ART_RUNTIME_JVALUE_H_