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
|
/*
* Copyright (C) 2007 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.
*/
package com.android.dexgen.dex.code;
import com.android.dexgen.rop.code.RegisterSpecList;
import com.android.dexgen.rop.code.SourcePosition;
import com.android.dexgen.util.AnnotatedOutput;
/**
* Base class for instructions which are of a fixed code size and which use {@link InsnFormat} methods to write themselves. This
* includes most — but not all — instructions.
*/
public abstract class FixedSizeInsn extends DalvInsn {
/**
* Constructs an instance. The output address of this instance is initially
* unknown ({@code -1}).
*
* <p><b>Note:</b> In the unlikely event that an instruction takes
* absolutely no registers (e.g., a {@code nop} or a
* no-argument no-result * static method call), then the given
* register list may be passed as {@link
* RegisterSpecList#EMPTY}.</p>
*
* @param opcode the opcode; one of the constants from {@link Dops}
* @param position {@code non-null;} source position
* @param registers {@code non-null;} register list, including a
* result register if appropriate (that is, registers may be either
* ins or outs)
*/
public FixedSizeInsn(Dop opcode, SourcePosition position,
RegisterSpecList registers) {
super(opcode, position, registers);
}
/** {@inheritDoc} */
@Override
public final int codeSize() {
return getOpcode().getFormat().codeSize();
}
/** {@inheritDoc} */
@Override
public final void writeTo(AnnotatedOutput out) {
getOpcode().getFormat().writeTo(out, this);
}
/** {@inheritDoc} */
@Override
public final DalvInsn withRegisterOffset(int delta) {
return withRegisters(getRegisters().withOffset(delta));
}
/** {@inheritDoc} */
@Override
protected final String listingString0(boolean noteIndices) {
return getOpcode().getFormat().listingString(this, noteIndices);
}
}
|
