xref: /freebsd-src/contrib/bearssl/T0/OpcodeCall.cs (revision 2aaf9152a852aba9eb2036b95f4948ee77988826)
1*0957b409SSimon J. Gerraty /*
2*0957b409SSimon J. Gerraty  * Copyright (c) 2016 Thomas Pornin <pornin@bolet.org>
3*0957b409SSimon J. Gerraty  *
4*0957b409SSimon J. Gerraty  * Permission is hereby granted, free of charge, to any person obtaining
5*0957b409SSimon J. Gerraty  * a copy of this software and associated documentation files (the
6*0957b409SSimon J. Gerraty  * "Software"), to deal in the Software without restriction, including
7*0957b409SSimon J. Gerraty  * without limitation the rights to use, copy, modify, merge, publish,
8*0957b409SSimon J. Gerraty  * distribute, sublicense, and/or sell copies of the Software, and to
9*0957b409SSimon J. Gerraty  * permit persons to whom the Software is furnished to do so, subject to
10*0957b409SSimon J. Gerraty  * the following conditions:
11*0957b409SSimon J. Gerraty  *
12*0957b409SSimon J. Gerraty  * The above copyright notice and this permission notice shall be
13*0957b409SSimon J. Gerraty  * included in all copies or substantial portions of the Software.
14*0957b409SSimon J. Gerraty  *
15*0957b409SSimon J. Gerraty  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
16*0957b409SSimon J. Gerraty  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
17*0957b409SSimon J. Gerraty  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
18*0957b409SSimon J. Gerraty  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
19*0957b409SSimon J. Gerraty  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
20*0957b409SSimon J. Gerraty  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
21*0957b409SSimon J. Gerraty  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
22*0957b409SSimon J. Gerraty  * SOFTWARE.
23*0957b409SSimon J. Gerraty  */
24*0957b409SSimon J. Gerraty 
25*0957b409SSimon J. Gerraty using System;
26*0957b409SSimon J. Gerraty using System.Collections.Generic;
27*0957b409SSimon J. Gerraty 
28*0957b409SSimon J. Gerraty class OpcodeCall : Opcode {
29*0957b409SSimon J. Gerraty 
30*0957b409SSimon J. Gerraty 	Word target;
31*0957b409SSimon J. Gerraty 
OpcodeCall()32*0957b409SSimon J. Gerraty 	internal OpcodeCall() : this(null)
33*0957b409SSimon J. Gerraty 	{
34*0957b409SSimon J. Gerraty 	}
35*0957b409SSimon J. Gerraty 
OpcodeCall(Word target)36*0957b409SSimon J. Gerraty 	internal OpcodeCall(Word target)
37*0957b409SSimon J. Gerraty 	{
38*0957b409SSimon J. Gerraty 		this.target = target;
39*0957b409SSimon J. Gerraty 	}
40*0957b409SSimon J. Gerraty 
ResolveTarget(Word target)41*0957b409SSimon J. Gerraty 	internal override void ResolveTarget(Word target)
42*0957b409SSimon J. Gerraty 	{
43*0957b409SSimon J. Gerraty 		if (this.target != null) {
44*0957b409SSimon J. Gerraty 			throw new Exception("Opcode already resolved");
45*0957b409SSimon J. Gerraty 		}
46*0957b409SSimon J. Gerraty 		this.target = target;
47*0957b409SSimon J. Gerraty 	}
48*0957b409SSimon J. Gerraty 
Run(CPU cpu)49*0957b409SSimon J. Gerraty 	internal override void Run(CPU cpu)
50*0957b409SSimon J. Gerraty 	{
51*0957b409SSimon J. Gerraty 		target.Run(cpu);
52*0957b409SSimon J. Gerraty 	}
53*0957b409SSimon J. Gerraty 
GetReference(T0Comp ctx)54*0957b409SSimon J. Gerraty 	internal override Word GetReference(T0Comp ctx)
55*0957b409SSimon J. Gerraty 	{
56*0957b409SSimon J. Gerraty 		if (target == null) {
57*0957b409SSimon J. Gerraty 			throw new Exception("Unresolved call target");
58*0957b409SSimon J. Gerraty 		}
59*0957b409SSimon J. Gerraty 		return target;
60*0957b409SSimon J. Gerraty 	}
61*0957b409SSimon J. Gerraty 
ToCodeElement()62*0957b409SSimon J. Gerraty 	internal override CodeElement ToCodeElement()
63*0957b409SSimon J. Gerraty 	{
64*0957b409SSimon J. Gerraty 		return new CodeElementUInt((uint)target.Slot);
65*0957b409SSimon J. Gerraty 	}
66*0957b409SSimon J. Gerraty 
ToString()67*0957b409SSimon J. Gerraty 	public override string ToString()
68*0957b409SSimon J. Gerraty 	{
69*0957b409SSimon J. Gerraty 		return "call " + (target == null ? "UNRESOLVED" : target.Name);
70*0957b409SSimon J. Gerraty 	}
71*0957b409SSimon J. Gerraty }
72