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ZealOS/docs/Demo/Asm/AsmAndC1.CC.html
TomAwezome 1b75d91002 Fix Mount AHCI Port selection. 
Add arg to SATARep to specify drive types to show.
Add checks in AHCIPortInit to verify port signatures, add helper method to get signatures from port.
2021-08-02 16:40:05 -04:00

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<a name="l1"></a><span class=cF2>/*Asm labels can only be defined once</span><span class=cF0>
<a name="l2"></a></span><span class=cF2>in a task. &lt;F5&gt; will spawn a new task</span><span class=cF0>
<a name="l3"></a></span><span class=cF2>each time, so you don't get redefine</span><span class=cF0>
<a name="l4"></a></span><span class=cF2>error, like when repeatedly #including</span><span class=cF0>
<a name="l5"></a></span><span class=cF2>it from the cmd line.</span><span class=cF0>
<a name="l6"></a></span><span class=cF2>*/</span><span class=cF0>
<a name="l7"></a>
<a name="l8"></a></span><span class=cF1>asm</span><span class=cF0> {
<a name="l9"></a></span><span class=cF2>//Opcodes are slightly different to make writing the x86_64 assembler easier.</span><span class=cF0>
<a name="l10"></a></span><span class=cF2>//See </span><a href="https://zeal-operating-system.github.io/ZealOS/Compiler/OpCodes.DD.html#l1"><span class=cF4>::/Compiler/OpCodes.DD</span></a><span class=cF2>.</span><span class=cF0>
<a name="l11"></a>
<a name="l12"></a> </span><span class=cF1>IMPORT</span><span class=cF0> </span><span class=cF5>Beep</span><span class=cF0>;
<a name="l13"></a>
<a name="l14"></a>_BEEPS::
<a name="l15"></a></span><span class=cF2>//You can always clobber RAX,RBX,RCX,RDX,R8,R9. The compiler expects that.</span><span class=cF0>
<a name="l16"></a></span><span class=cF2>//See </span><a href="https://zeal-operating-system.github.io/ZealOS/Kernel/KernelA.HH.html#l1936"><span class=cF4>REGG_CLOBBERED</span></a><span class=cF2> and </span><a href="https://zeal-operating-system.github.io/ZealOS/Kernel/KernelA.HH.html#l1938"><span class=cF4>REGG_STACK_TMP</span></a><span class=cF2>.</span><span class=cF0>
<a name="l17"></a> </span><span class=cF1>PUSH</span><span class=cF0> </span><span class=cFC>RBP</span><span class=cF0>
<a name="l18"></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="l19"></a> </span><span class=cF1>MOV</span><span class=cF0> </span><span class=cFC>RCX</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>] </span><span class=cF2>//</span><a href="https://zeal-operating-system.github.io/ZealOS/Kernel/KernelA.HH.html#l715"><span class=cF4>SF_ARG1</span></a><span class=cF0>
<a name="l20"></a>
<a name="l21"></a>@@05: </span><span class=cF1>PUSH</span><span class=cF0> </span><span class=cFC>RCX</span><span class=cF0>
<a name="l22"></a></span><span class=cF2>//U0 </span><a href="https://zeal-operating-system.github.io/ZealOS/Kernel/KMisc.CC.html#l200"><span class=cF4>Beep</span></a><span class=cF2>(I8 ona=62,Bool busy=FALSE)</span><span class=cF0>
<a name="l23"></a> </span><span class=cF1>PUSH</span><span class=cF0> </span><span class=cF3>FALSE</span><span class=cF0> </span><span class=cF2>//Do not busy (spin) wait</span><span class=cF0>
<a name="l24"></a> </span><span class=cF1>PUSH</span><span class=cF0> </span><span class=cFE>62</span><span class=cF0> </span><span class=cF2>//500 Hz</span><span class=cF0>
<a name="l25"></a> </span><span class=cF1>CALL</span><span class=cF0> </span><span class=cF5>Beep</span><span class=cF0>
<a name="l26"></a> </span><span class=cF1>POP</span><span class=cF0> </span><span class=cFC>RCX</span><span class=cF0>
<a name="l27"></a> </span><span class=cF1>LOOP</span><span class=cF0> @@05
<a name="l28"></a>
<a name="l29"></a> </span><span class=cF1>POP</span><span class=cF0> </span><span class=cFC>RBP</span><span class=cF0>
<a name="l30"></a> </span><span class=cF1>RET1</span><span class=cF0> </span><span class=cFE>8</span><span class=cF0> </span><span class=cF2>//Use special return. Pop one arg off of stack.</span><span class=cF0>
<a name="l31"></a>
<a name="l32"></a></span><span class=cF2>//CosmiC return vals are in RAX.</span><span class=cF0> </span><span class=cF2>This function has no return value.</span><span class=cF0>
<a name="l33"></a>}
<a name="l34"></a>
<a name="l35"></a></span><span class=cF2>//_extern binds a asm sym to a function.</span><span class=cF0>
<a name="l36"></a></span><span class=cF2>//The convention is to put an underscore</span><span class=cF0>
<a name="l37"></a></span><span class=cF2>//on C callable asm routines.</span><span class=cF0>
<a name="l38"></a></span><span class=cF1>_extern</span><span class=cF0> _BEEPS </span><span class=cF1>U0</span><span class=cF0> Beeps(</span><span class=cF9>I64</span><span class=cF0> count);
<a name="l39"></a>
<a name="l40"></a></span><span class=cF9>I64</span><span class=cF0> AsmAndC1()
<a name="l41"></a>{
<a name="l42"></a> </span><span class=cF9>I64</span><span class=cF0> </span><span class=cF1>noreg</span><span class=cF0> i; </span><span class=cF2>//Normally this would be stored in a reg</span><span class=cF0>
<a name="l43"></a></span><span class=cF2>//Check by unassembling with </span><a href="https://zeal-operating-system.github.io/ZealOS/System/Debug.CC.html#l330"><span class=cF4>Uf</span></a><span class=cF2>(&quot;AsmAndC1&quot;).</span><span class=cF0>
<a name="l44"></a>
<a name="l45"></a> i = </span><span class=cF5>I64Get</span><span class=cF0>(</span><span class=cF6>&quot;Num of beeps 1-5 (%d):&quot;</span><span class=cF0>, </span><span class=cFE>3</span><span class=cF0>, </span><span class=cFE>1</span><span class=cF0>, </span><span class=cFE>5</span><span class=cF0>);
<a name="l46"></a> Beeps(i);
<a name="l47"></a>
<a name="l48"></a> </span><span class=cF1>asm</span><span class=cF0> </span><span class=cF7>{</span><span class=cF0>
<a name="l49"></a></span><span class=cF2>//You can clobber RAX,RBX,RCX,RDX.</span><span class=cF0> </span><span class=cF2>The compiler expects that.</span><span class=cF0>
<a name="l50"></a>
<a name="l51"></a> </span><span class=cF1>IMPORT</span><span class=cF0> </span><span class=cF5>Sound</span><span class=cF0>; </span><span class=cF2>//Import an not use &amp; or don't import and use &amp;Sound.</span><span class=cF0>
<a name="l52"></a> </span><span class=cF1>MOV</span><span class=cF0> </span><span class=cFC>RCX</span><span class=cF0>, &amp;i[</span><span class=cFC>RBP</span><span class=cF0>] </span><span class=cF2>//You can clobber RAX,RBX,RCX,RDX.</span><span class=cF0>
<a name="l53"></a> </span><span class=cF2>//You better preserve the rest.</span><span class=cF0>
<a name="l54"></a>@@05: </span><span class=cF1>PUSH</span><span class=cF0> </span><span class=cFC>RCX</span><span class=cF0>
<a name="l55"></a>
<a name="l56"></a> </span><span class=cF2>//U0 </span><a href="https://zeal-operating-system.github.io/ZealOS/Kernel/KMisc.CC.html#l129"><span class=cF4>Sound</span></a><span class=cF2>(I8 ona);</span><span class=cF0>
<a name="l57"></a> </span><span class=cF1>MOV</span><span class=cF0> </span><span class=cFC>RAX</span><span class=cF0>, </span><span class=cFC>RCX</span><span class=cF0> </span><span class=cF2>//ona=loop*10+50</span><span class=cF0>
<a name="l58"></a> </span><span class=cF1>IMUL2</span><span class=cF0> </span><span class=cFC>RAX</span><span class=cF0>, </span><span class=cFE>10</span><span class=cF0> </span><span class=cF2>//ZealOS uses nonstandard opcodes</span><span class=cF0>
<a name="l59"></a> </span><span class=cF2>//to avoid multiple form of the same one.</span><span class=cF0>
<a name="l60"></a> </span><span class=cF2>//See </span><a href="https://zeal-operating-system.github.io/ZealOS/Compiler/OpCodes.DD.html#l1"><span class=cF4>::/Compiler/OpCodes.DD</span></a><span class=cF2>.</span><span class=cF0>
<a name="l61"></a> </span><span class=cF1>ADD</span><span class=cF0> </span><span class=cFC>RAX</span><span class=cF0>, </span><span class=cFE>40</span><span class=cF0>
<a name="l62"></a> </span><span class=cF1>PUSH</span><span class=cF0> </span><span class=cFC>RAX</span><span class=cF0>
<a name="l63"></a> </span><span class=cF1>CALL</span><span class=cF0> </span><span class=cF5>Sound</span><span class=cF0>
<a name="l64"></a>
<a name="l65"></a> </span><span class=cF1>MOV</span><span class=cF0> </span><span class=cFC>RCX</span><span class=cF0>, </span><span class=cFB>counts</span><span class=cF0>.time_stamp_freq &gt;&gt; </span><span class=cFE>3</span><span class=cF0> </span><span class=cF2>//JIT Const.</span><span class=cF0> </span><span class=cF2>Simple delay loop</span><span class=cF0>
<a name="l66"></a>@@10: </span><span class=cF1>LOOP</span><span class=cF0> @@10
<a name="l67"></a>
<a name="l68"></a> </span><span class=cF1>POP</span><span class=cF0> </span><span class=cFC>RCX</span><span class=cF0>
<a name="l69"></a> </span><span class=cF1>LOOP</span><span class=cF0> @@05
<a name="l70"></a> </span><span class=cF7>}</span><span class=cF0>
<a name="l71"></a> </span><span class=cF5>Sound</span><span class=cF0>;
<a name="l72"></a>
<a name="l73"></a> </span><span class=cF1>return</span><span class=cF0> i;
<a name="l74"></a>}
<a name="l75"></a>
<a name="l76"></a></span><span class=cF6>&quot;Beeps:%d\n&quot;</span><span class=cF0>, AsmAndC1;
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