2 * Copyright (c) 2016 Thomas Pornin <pornin@bolet.org>
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:
12 * The above copyright notice and this permission notice shall be
13 * included in all copies or substantial portions of the Software.
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
26 using System.Collections.Generic;
28 class OpcodeConst : Opcode {
32 internal OpcodeConst(TValue val)
37 internal override void Run(CPU cpu)
42 internal override Word GetReference(T0Comp ctx)
44 TPointerXT xt = val.ptr as TPointerXT;
52 internal override ConstData GetDataBlock(T0Comp ctx)
54 TPointerBlob bp = val.ptr as TPointerBlob;
55 return bp == null ? null : bp.Blob;
58 internal override CodeElement ToCodeElement()
60 if (val.ptr == null) {
61 return new CodeElementUIntInt(1, val.Int);
63 TPointerXT xt = val.ptr as TPointerXT;
67 "Cannot compile XT: non-zero offset");
69 return new CodeElementUIntInt(1, xt.Target.Slot);
71 TPointerBlob bp = val.ptr as TPointerBlob;
73 return new CodeElementUIntInt(1,
74 val.x + bp.Blob.Address);
76 TPointerExpr cx = val.ptr as TPointerExpr;
78 return new CodeElementUIntExpr(1, cx, val.x);
80 throw new Exception(String.Format(
81 "Cannot embed constant (type = {0})",
82 val.ptr.GetType().FullName));
85 internal override int StackAction {
91 public override string ToString()
93 return "const " + val.ToString();