aboutsummaryrefslogtreecommitdiffstatshomepage
path: root/OpenSim/Region/Environment/Scenes/Scripting/Engines/JVMEngine/JVM/Interpreter.cs
blob: e71832860f38f11975762262632e0c5cefdb57e1 (plain)
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
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
/*
* Copyright (c) Contributors, http://www.openmetaverse.org/
* See CONTRIBUTORS.TXT for a full list of copyright holders.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*     * Redistributions of source code must retain the above copyright
*       notice, this list of conditions and the following disclaimer.
*     * Redistributions in binary form must reproduce the above copyright
*       notice, this list of conditions and the following disclaimer in the
*       documentation and/or other materials provided with the distribution.
*     * Neither the name of the OpenSim Project nor the
*       names of its contributors may be used to endorse or promote products
*       derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
* 
*/
using System;
using System.Collections.Generic;
using System.Text;
using OpenSim.Region.Scripting.EmbeddedJVM.Types;
using OpenSim.Region.Scripting.EmbeddedJVM.Types.PrimitiveTypes;

namespace OpenSim.Region.Scripting.EmbeddedJVM
{
    partial class Thread
    {
        private partial class Interpreter
        {
            private Thread m_thread;

            public Interpreter(Thread parentThread)
            {
                m_thread = parentThread;
            }

            public bool Excute()
            {
                bool run = true;
                byte currentOpCode = GlobalMemory.MethodArea.MethodBuffer[this.m_thread.PC++];
               // Console.WriteLine("opCode is: " + currentOpCode);
                bool handled = false;

                handled = this.IsLogicOpCode(currentOpCode);
                if (!handled)
                {
                    handled = this.IsMethodOpCode(currentOpCode);
                }
                if (!handled)
                {
                    if (currentOpCode == 172)
                    {
                        if (this.m_thread.stack.StackFrames.Count > 1)
                        {
                            Console.WriteLine("returning int from function");
                            int retPC1 = this.m_thread.m_currentFrame.ReturnPC;
                            BaseType bas1 = this.m_thread.m_currentFrame.OpStack.Pop();
                            this.m_thread.stack.StackFrames.Pop();
                            this.m_thread.m_currentFrame = this.m_thread.stack.StackFrames.Peek();
                            this.m_thread.PC = retPC1;
                            if (bas1 is Int)
                            {
                                this.m_thread.m_currentFrame.OpStack.Push((Int)bas1);
                            }
                        }
                        else
                        {
                          //  Console.WriteLine("No parent function so ending program");
                            this.m_thread.stack.StackFrames.Pop();
                            run = false;
                        }
                        handled = true;
                    }
                    if (currentOpCode == 174)
                    {
                        if (this.m_thread.stack.StackFrames.Count > 1)
                        {
                            Console.WriteLine("returning float from function");
                            int retPC1 = this.m_thread.m_currentFrame.ReturnPC;
                            BaseType bas1 = this.m_thread.m_currentFrame.OpStack.Pop();
                            this.m_thread.stack.StackFrames.Pop();
                            this.m_thread.m_currentFrame = this.m_thread.stack.StackFrames.Peek();
                            this.m_thread.PC = retPC1;
                            if (bas1 is Float)
                            {
                                this.m_thread.m_currentFrame.OpStack.Push((Float)bas1);
                            }
                        }
                        else
                        {
                           // Console.WriteLine("No parent function so ending program");
                            this.m_thread.stack.StackFrames.Pop();
                            run = false;
                        }
                        handled = true;
                    }
                    if (currentOpCode == 177)
                    {
                        if (this.m_thread.stack.StackFrames.Count > 1)
                        {
                            Console.WriteLine("returning from function");
                            int retPC = this.m_thread.m_currentFrame.ReturnPC;
                            this.m_thread.stack.StackFrames.Pop();
                            this.m_thread.m_currentFrame = this.m_thread.stack.StackFrames.Peek();
                            this.m_thread.PC = retPC;
                        }
                        else
                        {
                           // Console.WriteLine("No parent function so ending program");
                            this.m_thread.stack.StackFrames.Pop();
                            run = false;
                        }
                        handled = true;
                    }
                }
                if (!handled)
                {
                    Console.WriteLine("opcode " + currentOpCode + " not been handled ");
                }
                return run;

            }
        }
    }
}