blob: 9dc3ea7a7cd1c757cf5619c86ff3dce741cefef3 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
|
/*
* 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_VERIFIER_METHOD_INSTRUCTION_FLAGS_H_
#define ART_SRC_VERIFIER_METHOD_INSTRUCTION_FLAGS_H_
#include "base/logging.h"
#include <stdint.h>
#include <string>
namespace art {
namespace verifier {
class InstructionFlags {
public:
InstructionFlags() : length_(0), flags_(0) {}
void SetLengthInCodeUnits(size_t length) {
DCHECK_LT(length, 65536u);
length_ = length;
}
size_t GetLengthInCodeUnits() {
return length_;
}
bool IsOpcode() const {
return length_ != 0;
}
void SetInTry() {
flags_ |= 1 << kInTry;
}
void ClearInTry() {
flags_ &= ~(1 << kInTry);
}
bool IsInTry() const {
return (flags_ & (1 << kInTry)) != 0;
}
void SetBranchTarget() {
flags_ |= 1 << kBranchTarget;
}
void ClearBranchTarget() {
flags_ &= ~(1 << kBranchTarget);
}
bool IsBranchTarget() const {
return (flags_ & (1 << kBranchTarget)) != 0;
}
void SetCompileTimeInfoPoint() {
flags_ |= 1 << kCompileTimeInfoPoint;
}
void ClearCompileTimeInfoPoint() {
flags_ &= ~(1 << kCompileTimeInfoPoint);
}
bool IsCompileTimeInfoPoint() const {
return (flags_ & (1 << kCompileTimeInfoPoint)) != 0;
}
void SetVisited() {
flags_ |= 1 << kVisited;
}
void ClearVisited() {
flags_ &= ~(1 << kVisited);
}
bool IsVisited() const {
return (flags_ & (1 << kVisited)) != 0;
}
void SetChanged() {
flags_ |= 1 << kChanged;
}
void ClearChanged() {
flags_ &= ~(1 << kChanged);
}
bool IsChanged() const {
return (flags_ & (1 << kChanged)) != 0;
}
bool IsVisitedOrChanged() const {
return IsVisited() || IsChanged();
}
std::string ToString() const;
private:
enum {
kInTry,
kBranchTarget,
kCompileTimeInfoPoint, // Location of interest to the compiler for GC maps and
// verifier based method sharpening.
kVisited,
kChanged,
};
// Size of instruction in code units.
uint16_t length_;
uint8_t flags_;
};
} // namespace verifier
} // namespace art
#endif // ART_SRC_VERIFIER_METHOD_INSTRUCTION_FLAGS_H_
|
