Fixed displaying of IPv6 addresses.
[BearSSL] / T0 / OpcodeConst.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 using System.Collections.Generic;
27
28 class OpcodeConst : Opcode {
29
30 TValue val;
31
32 internal OpcodeConst(TValue val)
33 {
34 this.val = val;
35 }
36
37 internal override void Run(CPU cpu)
38 {
39 cpu.Push(val);
40 }
41
42 internal override Word GetReference(T0Comp ctx)
43 {
44 TPointerXT xt = val.ptr as TPointerXT;
45 if (xt == null) {
46 return null;
47 }
48 xt.Resolve(ctx);
49 return xt.Target;
50 }
51
52 internal override ConstData GetDataBlock(T0Comp ctx)
53 {
54 TPointerBlob bp = val.ptr as TPointerBlob;
55 return bp == null ? null : bp.Blob;
56 }
57
58 internal override CodeElement ToCodeElement()
59 {
60 if (val.ptr == null) {
61 return new CodeElementUIntInt(1, val.Int);
62 }
63 TPointerXT xt = val.ptr as TPointerXT;
64 if (xt != null) {
65 if (val.x != 0) {
66 throw new Exception(
67 "Cannot compile XT: non-zero offset");
68 }
69 return new CodeElementUIntInt(1, xt.Target.Slot);
70 }
71 TPointerBlob bp = val.ptr as TPointerBlob;
72 if (bp != null) {
73 return new CodeElementUIntInt(1,
74 val.x + bp.Blob.Address);
75 }
76 TPointerExpr cx = val.ptr as TPointerExpr;
77 if (cx != null) {
78 return new CodeElementUIntExpr(1, cx, val.x);
79 }
80 throw new Exception(String.Format(
81 "Cannot embed constant (type = {0})",
82 val.ptr.GetType().FullName));
83 }
84
85 internal override int StackAction {
86 get {
87 return 1;
88 }
89 }
90
91 public override string ToString()
92 {
93 return "const " + val.ToString();
94 }
95 }