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ZealOS/docs/Doc/HelloWorld.DD.html
TomAwezome 48d4f999cb Update documentation.
2021-12-11 06:10:58 -05:00

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<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html;charset=US-ASCII">
<meta name="generator" content="ZealOS V1.07">
<style type="text/css">
body {background-color:#1f1f1f;}
.cF0{color:#e3e3e3;background-color:#1f1f1f;}
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.cFF{color:#1f1f1f;background-color:#1f1f1f;}
</style>
</head>
<body>
<pre style="font-family:monospace;font-size:12pt">
<a name="l1"></a><span class=cF2>//Press F5 in the editor to compile and run.</span><span class=cF0>
<a name="l2"></a>
<a name="l3"></a></span><span class=cF2>// --------Hello.ZC--------- //</span><span class=cF0>
<a name="l4"></a></span><span class=cF6>&quot;Hello World\n&quot;</span><span class=cF0>;
<a name="l5"></a>
<a name="l6"></a>
<a name="l7"></a></span><span class=cF2>// --------Hello.ZC--------- //</span><span class=cF0>
<a name="l8"></a></span><span class=cF1>U0</span><span class=cF0> Main()
<a name="l9"></a>{
<a name="l10"></a> </span><span class=cF6>&quot;Hello World\n&quot;</span><span class=cF0>;
<a name="l11"></a>}
<a name="l12"></a>Main;
<a name="l13"></a>
<a name="l14"></a>
<a name="l15"></a></span><span class=cF2>// --------Hello.ZC--------- //</span><span class=cF0>
<a name="l16"></a></span><span class=cF1>U0</span><span class=cF0> MyPrint(</span><span class=cF1>U8</span><span class=cF0> *st)
<a name="l17"></a>{
<a name="l18"></a> </span><span class=cF6>&quot;%s&quot;</span><span class=cF0>, st;
<a name="l19"></a>}
<a name="l20"></a>MyPrint(</span><span class=cF6>&quot;Hello World\n&quot;</span><span class=cF0>);
<a name="l21"></a>
<a name="l22"></a>
<a name="l23"></a></span><span class=cF2>// --------Hello.ZC--------- // </span><span class=cF0>
<a name="l24"></a></span><span class=cF1>U0</span><span class=cF0> MyPrint2(</span><span class=cF1>U8</span><span class=cF0> *st1, </span><span class=cF1>U8</span><span class=cF0> *st2) </span><span class=cF2>//Any number of args.</span><span class=cF0>
<a name="l25"></a>{
<a name="l26"></a> </span><span class=cF6>&quot;%s %s\n&quot;</span><span class=cF0>, st1, st2; </span><span class=cF2>//Any number of args.</span><span class=cF0>
<a name="l27"></a>}
<a name="l28"></a>MyPrint2(</span><span class=cF6>&quot;Hello&quot;</span><span class=cF0>, </span><span class=cF6>&quot;World&quot;</span><span class=cF0>);
<a name="l29"></a>
<a name="l30"></a>
<a name="l31"></a></span><span class=cF2>// --------Hello.ZC--------- // </span><span class=cF0>
<a name="l32"></a></span><span class=cF1>U0</span><span class=cF0> MyPrint(</span><span class=cF1>U8</span><span class=cF0> *st)
<a name="l33"></a>{
<a name="l34"></a> </span><span class=cF6>&quot;&quot;</span><span class=cF0> st; </span><span class=cF2>//Empty with no comma means first is format str.</span><span class=cF0>
<a name="l35"></a>}
<a name="l36"></a>MyPrint(</span><span class=cF6>&quot;Hello World\n&quot;</span><span class=cF0>);
<a name="l37"></a>
<a name="l38"></a>
<a name="l39"></a></span><span class=cF2>// --------Hello.ZC--------- // </span><span class=cF0>
<a name="l40"></a></span><span class=cF1>asm</span><span class=cF0> {
<a name="l41"></a>MESSAGE: </span><span class=cF1>DU8</span><span class=cF0> </span><span class=cF6>&quot;Hello World\n&quot;</span><span class=cF0>, </span><span class=cFE>0</span><span class=cF0>;
<a name="l42"></a>
<a name="l43"></a></span><span class=cF2>//The convention is underscore on C callable.</span><span class=cF0>
<a name="l44"></a></span><span class=cF2>//Two colons means exported symbol.</span><span class=cF0>
<a name="l45"></a>_HELLO_WORLD1::
<a name="l46"></a></span><span class=cF2>//You can only clobber RAX,RBX,RCX,RDX</span><span class=cF0>
<a name="l47"></a> </span><span class=cF1>PUSH</span><span class=cF0> </span><span class=cFC>RSI</span><span class=cF0>
<a name="l48"></a> </span><span class=cF1>MOV</span><span class=cF0> </span><span class=cFC>RSI</span><span class=cF0>, MESSAGE
<a name="l49"></a> </span><span class=cF1>CALL</span><span class=cF0> </span><span class=cFD>PUT_STR</span><span class=cF0>
<a name="l50"></a> </span><span class=cF1>POP</span><span class=cF0> </span><span class=cFC>RSI</span><span class=cF0>
<a name="l51"></a> </span><span class=cF1>RET</span><span class=cF0>
<a name="l52"></a>}
<a name="l53"></a></span><span class=cF5>Call</span><span class=cF0>(_HELLO_WORLD1);
<a name="l54"></a>
<a name="l55"></a>
<a name="l56"></a></span><span class=cF2>// --------Hello.ZC--------- //</span><span class=cF0>
<a name="l57"></a></span><span class=cF1>asm</span><span class=cF0> {
<a name="l58"></a>_HELLO_WORLD2::
<a name="l59"></a></span><span class=cF2>//You can only clobber RAX,RBX,RCX,RDX</span><span class=cF0>
<a name="l60"></a> </span><span class=cF1>MOV</span><span class=cF0> </span><span class=cFC>RAX</span><span class=cF0>, </span><span class=cF6>'Hello '</span><span class=cF0>
<a name="l61"></a> </span><span class=cF1>CALL</span><span class=cF0> </span><span class=cFD>PUT_CHARS</span><span class=cF0> </span><span class=cF2>//Up to 8 chars packed into one 64-bit int.</span><span class=cF0>
<a name="l62"></a> </span><span class=cF1>MOV</span><span class=cF0> </span><span class=cFC>RAX</span><span class=cF0>, </span><span class=cF6>'World\n'</span><span class=cF0>
<a name="l63"></a> </span><span class=cF1>CALL</span><span class=cF0> </span><span class=cFD>PUT_CHARS</span><span class=cF0>
<a name="l64"></a> </span><span class=cF1>RET</span><span class=cF0>
<a name="l65"></a>}
<a name="l66"></a></span><span class=cF5>Call</span><span class=cF0>(_HELLO_WORLD2);
<a name="l67"></a>
<a name="l68"></a>
<a name="l69"></a></span><span class=cF2>// --------Hello.ZC--------- //</span><span class=cF0>
<a name="l70"></a></span><span class=cF1>asm</span><span class=cF0> {
<a name="l71"></a>_MY_PRINT1::
<a name="l72"></a></span><span class=cF2>//You can only clobber RAX,RBX,RCX,RDX</span><span class=cF0>
<a name="l73"></a> </span><span class=cF1>PUSH</span><span class=cF0> </span><span class=cFC>RBP</span><span class=cF0>
<a name="l74"></a> </span><span class=cF1>MOV</span><span class=cF0> </span><span class=cFC>RBP</span><span class=cF0>, </span><span class=cFC>RSP</span><span class=cF0>
<a name="l75"></a> </span><span class=cF1>PUSH</span><span class=cF0> </span><span class=cFC>RSI</span><span class=cF0>
<a name="l76"></a> </span><span class=cF1>MOV</span><span class=cF0> </span><span class=cFC>RSI</span><span class=cF0>, </span><span class=cF9>U64</span><span class=cF0> </span><span class=cF3>SF_ARG1</span><span class=cF0>[</span><span class=cFC>RBP</span><span class=cF0>]
<a name="l77"></a> </span><span class=cF1>CALL</span><span class=cF0> </span><span class=cFD>PUT_STR</span><span class=cF0>
<a name="l78"></a> </span><span class=cF1>POP</span><span class=cF0> </span><span class=cFC>RSI</span><span class=cF0>
<a name="l79"></a> </span><span class=cF1>POP</span><span class=cF0> </span><span class=cFC>RBP</span><span class=cF0>
<a name="l80"></a> </span><span class=cF1>RET1</span><span class=cF0> </span><span class=cFE>8</span><span class=cF0> </span><span class=cF2>//Callee pops the stack to clear args.</span><span class=cF0>
<a name="l81"></a>}
<a name="l82"></a></span><span class=cF1>_extern</span><span class=cF0> _MY_PRINT1 </span><span class=cF1>U0</span><span class=cF0> MyPrint(</span><span class=cF1>U8</span><span class=cF0> *st);
<a name="l83"></a>MyPrint(</span><span class=cF6>&quot;Hello World\n&quot;</span><span class=cF0>);
<a name="l84"></a>
<a name="l85"></a>
<a name="l86"></a> </span><span class=cF2>// --------Hello.ZC--------- //</span><span class=cF0>
<a name="l87"></a></span><span class=cF1>asm</span><span class=cF0> {
<a name="l88"></a>_MY_PRINT2::
<a name="l89"></a></span><span class=cF2>//You can only clobber RAX,RBX,RCX,RDX</span><span class=cF0>
<a name="l90"></a> </span><span class=cF1>PUSH</span><span class=cF0> </span><span class=cFC>RBP</span><span class=cF0>
<a name="l91"></a> </span><span class=cF1>MOV</span><span class=cF0> </span><span class=cFC>RBP</span><span class=cF0>, </span><span class=cFC>RSP</span><span class=cF0>
<a name="l92"></a> </span><span class=cF1>PUSH</span><span class=cF0> </span><span class=cF9>U64</span><span class=cF0> </span><span class=cF3>SF_ARG1</span><span class=cF0>[</span><span class=cFC>RBP</span><span class=cF0>]
<a name="l93"></a> </span><span class=cF1>CALL</span><span class=cF0> &amp;</span><span class=cF5>PutS</span><span class=cF0> </span><span class=cF2>//Callee pops the stack to clear args.</span><span class=cF0>
<a name="l94"></a> </span><span class=cF1>POP</span><span class=cF0> </span><span class=cFC>RBP</span><span class=cF0>
<a name="l95"></a> </span><span class=cF1>RET1</span><span class=cF0> </span><span class=cFE>8</span><span class=cF0>
<a name="l96"></a>}
<a name="l97"></a></span><span class=cF1>_extern</span><span class=cF0> _MY_PRINT2 </span><span class=cF1>U0</span><span class=cF0> MyPrint(</span><span class=cF1>U8</span><span class=cF0> *st);
<a name="l98"></a>MyPrint(</span><span class=cF6>&quot;Hello World\n&quot;</span><span class=cF0>);
<a name="l99"></a>
</span></pre></body>
</html>
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