mirror of
https://github.com/danbulant/Cosmos
synced 2026-05-31 13:21:05 +00:00
92 lines
3.1 KiB
HTML
92 lines
3.1 KiB
HTML
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="index.html.cs" Inherits="XSharp_index" %>
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml">
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<title></title>
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</head>
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<body>
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<h3>
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To Do</h3>
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<p>
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Call/JumpIf(EAX == 0x04, ....)</p>
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<p>
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Can do reg = reg + 4 - define the + overload as a type that can then be
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reimplicitly converted to a register, or whatever type goes inside Memory[x]</p>
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<p>
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Make it so X# doesnt require the 32 and that it checks register size Memory[EBX,
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32] = ECX; </p>
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<p>
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Register.cs - public void Push() { // TODO: This emits Push dword which
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generates warnings about dword being ignored new Push { DestinationReg = GetId()
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}; } |<br />
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AL.Push does not work at all.</p>
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<h3>
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X#milation would need to be implemented.</li>
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<li>One of the goals of Cosmos is the need to write very little assembly, so only
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debug stub, compiler users, etc need assembly. Too much work on X# may not be
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worth the resources required.</li>
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</ul>
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<h3>
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Usage</h3>
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<h3>
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Register Arithmetic</h3>
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<p>
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EBP = EBP + 32;<br />
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This is not possible because C# operator overloading does not look at return
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type but only the operand types. That is C# sees Register + int. If we supported
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the previous example, then X# could not support:<br />
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EAX = Memory[EBP + 4];<br />
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In short, C# sees these two as the same and so X# can only support one. Because
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the memory addressing is used more frequently than adding a constant to a
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register, X# supports it.<br />
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To add a constant to a register use:<br />
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EBP.Add(32);</p>
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<h3>
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Register-- / Register++</h3>
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<p>
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Valid and usable. Correspond to Inc and Dec.</p>
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<h3>
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Register Shifting</h3>
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<p>
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Example:<br />
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EAX = EAX << 2;</p>
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<p>
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Source and destination register must be the same.</p>
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<h3>
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Register Methods</h3>
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<ul>
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<li>Add</li>
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<li>Sub</li>
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<li>Compare</li>
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<li>Test</li>
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</ul>
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<h3>
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Register = int</h3>
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<p>
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Example:<br />
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EAX = 0x40;</p>
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<h3>
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Register = Register</h3>
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<p>
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Example:<br />
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EAX = EBP;</p>
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<h3>
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Register = Memory[Address];<br />
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Register = Memory[Address + int];</h3>
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<p>
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Address can be a string label. i.e. EAX = Memory["Data1"]</p>
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<h3>
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Register = Port[x]<br />
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Register = Port[EAX]</h3>
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<p>
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public static implicit operator RegisterEAX(ElementReference aReference) {
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Instance.Move(aReference); return Instance; }
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</p>
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<h3>
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Register = Label</h3>
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<p>
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Example:<br />
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EAX = AddressOf("Labelname");</p>
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</body>
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</html>
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