1/*
2 * Copyright (C) 2012 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#ifndef ART_RUNTIME_JVALUE_H_
18#define ART_RUNTIME_JVALUE_H_
19
20#include "base/macros.h"
21
22#include <stdint.h>
23
24namespace art {
25namespace mirror {
26class Object;
27}  // namespace mirror
28
29union PACKED(4) JValue {
30  // We default initialize JValue instances to all-zeros.
31  JValue() : j(0) {}
32
33  int8_t GetB() const { return b; }
34  void SetB(int8_t new_b) {
35    i = ((static_cast<int32_t>(new_b) << 24) >> 24);  // Sign-extend.
36  }
37
38  uint16_t GetC() const { return c; }
39  void SetC(uint16_t new_c) { c = new_c; }
40
41  double GetD() const { return d; }
42  void SetD(double new_d) { d = new_d; }
43
44  float GetF() const { return f; }
45  void SetF(float new_f) { f = new_f; }
46
47  int32_t GetI() const { return i; }
48  void SetI(int32_t new_i) { i = new_i; }
49
50  int64_t GetJ() const { return j; }
51  void SetJ(int64_t new_j) { j = new_j; }
52
53  mirror::Object* GetL() const { return l; }
54  void SetL(mirror::Object* new_l) { l = new_l; }
55
56  int16_t GetS() const { return s; }
57  void SetS(int16_t new_s) {
58    i = ((static_cast<int32_t>(new_s) << 16) >> 16);  // Sign-extend.
59  }
60
61  uint8_t GetZ() const { return z; }
62  void SetZ(uint8_t new_z) { z = new_z; }
63
64  mirror::Object** GetGCRoot() { return &l; }
65
66 private:
67  uint8_t z;
68  int8_t b;
69  uint16_t c;
70  int16_t s;
71  int32_t i;
72  int64_t j;
73  float f;
74  double d;
75  mirror::Object* l;
76};
77
78}  // namespace art
79
80#endif  // ART_RUNTIME_JVALUE_H_
81