Fixed displaying of IPv6 addresses.
[BearSSL] / T0 / CodeElementJump.cs
1 /*
2 * Copyright (c) 2016 Thomas Pornin <pornin@bolet.org>
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining
5 * a copy of this software and associated documentation files (the
6 * "Software"), to deal in the Software without restriction, including
7 * without limitation the rights to use, copy, modify, merge, publish,
8 * distribute, sublicense, and/or sell copies of the Software, and to
9 * permit persons to whom the Software is furnished to do so, subject to
10 * the following conditions:
11 *
12 * The above copyright notice and this permission notice shall be
13 * included in all copies or substantial portions of the Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
16 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
18 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
19 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
20 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
21 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
22 * SOFTWARE.
23 */
24
25 using System;
26
27 class CodeElementJump : CodeElement {
28
29 uint jumpType;
30 CodeElement target;
31
32 internal CodeElementJump(uint jumpType)
33 {
34 this.jumpType = jumpType;
35 }
36
37 internal override int Length {
38 get {
39 int len = Encode7EUnsigned(jumpType, null);
40 int joff = JumpOff;
41 if (joff == Int32.MinValue) {
42 len ++;
43 } else {
44 len += Encode7ESigned(joff, null);
45 }
46 return len;
47 }
48 }
49
50 internal override void SetJumpTarget(CodeElement target)
51 {
52 this.target = target;
53 }
54
55 int JumpOff {
56 get {
57 if (target == null || Address < 0 || target.Address < 0)
58 {
59 return Int32.MinValue;
60 } else {
61 return target.Address - (Address + LastLength);
62 }
63 }
64 }
65
66 internal override int Encode(BlobWriter bw)
67 {
68 if (bw == null) {
69 return Length;
70 }
71 int len = Encode7EUnsigned(jumpType, bw);
72 int joff = JumpOff;
73 if (joff == Int32.MinValue) {
74 throw new Exception("Unresolved addresses");
75 }
76 return len + Encode7ESigned(joff, bw);
77 }
78 }