ZealOS/docs/Demo/Carry.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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<pre style="font-family:monospace;font-size:12pt">
<a name="l1"></a><span class=cF2>//Shows the </span><a href="https://zeal-operating-system.github.io/ZealOS/Kernel/KernelB.HH.html#l203"><span class=cF4>Carry</span></a><span class=cF2> function. It holds the CPU carry flag.</span><span class=cF0>
<a name="l2"></a></span><span class=cF2>//</span><a href="https://zeal-operating-system.github.io/ZealOS/Compiler/UAsm.CC.html#l770"><span class=cF4>U</span></a><span class=cF2>() Unassemble to make sure it is right.</span><span class=cF0>
<a name="l3"></a>
<a name="l4"></a></span><span class=cF1>U0</span><span class=cF0> BigCount()
<a name="l5"></a>{
<a name="l6"></a> </span><span class=cF9>U64</span><span class=cF0> lo = </span><span class=cFE>0</span><span class=cF0>, hi = </span><span class=cFE>0</span><span class=cF0>;
<a name="l7"></a>
<a name="l8"></a> </span><span class=cF6>&quot;BigCount\n&quot;</span><span class=cF0>;
<a name="l9"></a> </span><span class=cF1>while</span><span class=cF0> (hi &lt; </span><span class=cFE>0x10</span><span class=cF0>)
<a name="l10"></a> </span><span class=cF7>{</span><span class=cF0>
<a name="l11"></a> lo += </span><span class=cFE>1</span><span class=cF0> &lt;&lt; </span><span class=cFE>58</span><span class=cF0>;
<a name="l12"></a> hi += </span><span class=cF5>Carry</span><span class=cF0>;
<a name="l13"></a> </span><span class=cF6>&quot;%016X %016X\n&quot;</span><span class=cF0>, hi, lo;
<a name="l14"></a> </span><span class=cF7>}</span><span class=cF0>
<a name="l15"></a>}
<a name="l16"></a>
<a name="l17"></a>BigCount;
<a name="l18"></a>
<a name="l19"></a></span><span class=cF1>U0</span><span class=cF0> BigShift()
<a name="l20"></a>{
<a name="l21"></a> </span><span class=cF9>U64</span><span class=cF0> lo = </span><span class=cFE>1</span><span class=cF0>, hi = </span><span class=cFE>0</span><span class=cF0>;
<a name="l22"></a>
<a name="l23"></a> </span><span class=cF6>&quot;Big Shift\n&quot;</span><span class=cF0>;
<a name="l24"></a> </span><span class=cF1>while</span><span class=cF0> (lo || hi)
<a name="l25"></a> </span><span class=cF7>{</span><span class=cF0>
<a name="l26"></a> hi &lt;&lt;= </span><span class=cFE>1</span><span class=cF0>;
<a name="l27"></a> lo &lt;&lt;= </span><span class=cFE>1</span><span class=cF0>;
<a name="l28"></a> hi += </span><span class=cF5>Carry</span><span class=cF0>;
<a name="l29"></a> </span><span class=cF6>&quot;%016X %016X\n&quot;</span><span class=cF0>, hi, lo;
<a name="l30"></a> </span><span class=cF7>}</span><span class=cF0>
<a name="l31"></a>}
<a name="l32"></a>
<a name="l33"></a>BigShift;
<a name="l34"></a>
<a name="l35"></a></span><span class=cF1>U0</span><span class=cF0> Branch()
<a name="l36"></a>{
<a name="l37"></a> </span><span class=cF9>U64</span><span class=cF0> i = </span><span class=cFE>0xFFCC3311</span><span class=cF0>, j;
<a name="l38"></a>
<a name="l39"></a> </span><span class=cF6>'Branch\n'</span><span class=cF0>;
<a name="l40"></a> </span><span class=cF1>for</span><span class=cF0> (j = </span><span class=cFE>0</span><span class=cF0>; j &lt; </span><span class=cFE>64</span><span class=cF0>; j++)
<a name="l41"></a> </span><span class=cF7>{</span><span class=cF0>
<a name="l42"></a> i &lt;&lt;= </span><span class=cFE>1</span><span class=cF0>;
<a name="l43"></a> </span><span class=cF1>if</span><span class=cF0> (</span><span class=cF5>Carry</span><span class=cF0>)
<a name="l44"></a> </span><span class=cF6>'1'</span><span class=cF0>;
<a name="l45"></a> </span><span class=cF1>else</span><span class=cF0>
<a name="l46"></a> </span><span class=cF6>'0'</span><span class=cF0>;
<a name="l47"></a> </span><span class=cF7>}</span><span class=cF0>
<a name="l48"></a> </span><span class=cF6>'\n'</span><span class=cF0>;
<a name="l49"></a>}
<a name="l50"></a>
<a name="l51"></a>Branch;
</span></pre></body>
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