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TomAwezome 6b3fd2fecb Rename abs_addres to abs_address. 
Update documentation/comments to rename addr, fun, var, stmt, blk, desc, reg, seg, ptr, dup, clus, val, and bttn, to address, function, variable, statement, block, description, register, segment, pointer, duplicate, cluster, value, and button, respectively.
2021-10-06 21:35:32 -04:00

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<pre style="font-family:monospace;font-size:12pt">
<a name="l1"></a><span class=cF0>#</span><span class=cF1>define</span><span class=cF0> ZERO_BUF_SIZE </span><span class=cFE>2048</span><span class=cF0>
<a name="l2"></a></span><span class=cF1>U0</span><span class=cF0> </span><span class=cF5>BlkWriteZero</span><span class=cF0>(</span><span class=cF9>CDrive</span><span class=cF0> *drive, </span><span class=cF9>I64</span><span class=cF0> blk, </span><span class=cF9>I64</span><span class=cF0> count)
<a name="l3"></a>{</span><span class=cF2>//Fill block count with zeros in Drive.</span><span class=cF0>
<a name="l4"></a> </span><span class=cF9>I64</span><span class=cF0> n;
<a name="l5"></a> </span><span class=cF1>U8</span><span class=cF0> *z = </span><span class=cF5>CAlloc</span><span class=cF0>(ZERO_BUF_SIZE &lt;&lt; </span><span class=cF3>BLK_SIZE_BITS</span><span class=cF0>);
<a name="l6"></a> </span><span class=cF1>Bool</span><span class=cF0> show_progress;
<a name="l7"></a>
<a name="l8"></a> </span><span class=cF1>if</span><span class=cF0> (count &gt; ZERO_BUF_SIZE &amp;&amp; drive-&gt;bd-&gt;type != </span><span class=cF3>BDT_RAM</span><span class=cF0>)
<a name="l9"></a> </span><span class=cF7>{</span><span class=cF0>
<a name="l10"></a> </span><span class=cFB>progress1</span><span class=cF0> = </span><span class=cFE>0</span><span class=cF0>;
<a name="l11"></a> </span><span class=cFB>progress1_max</span><span class=cF0> = count;
<a name="l12"></a> </span><span class=cF5>StrCopy</span><span class=cF0>(</span><span class=cFB>progress1_desc</span><span class=cF0>, </span><span class=cF6>&quot;Zeroing&quot;</span><span class=cF0>);
<a name="l13"></a> show_progress = </span><span class=cF3>TRUE</span><span class=cF0>;
<a name="l14"></a> </span><span class=cF7>}</span><span class=cF0>
<a name="l15"></a> </span><span class=cF1>else</span><span class=cF0>
<a name="l16"></a> show_progress = </span><span class=cF3>FALSE</span><span class=cF0>;
<a name="l17"></a> </span><span class=cF1>while</span><span class=cF0> (count &gt; </span><span class=cFE>0</span><span class=cF0>)
<a name="l18"></a> </span><span class=cF7>{</span><span class=cF0>
<a name="l19"></a> n = count;
<a name="l20"></a> </span><span class=cF1>if</span><span class=cF0> (n &gt; ZERO_BUF_SIZE)
<a name="l21"></a> n = ZERO_BUF_SIZE;
<a name="l22"></a> </span><span class=cF5>BlkWrite</span><span class=cF0>(drive, z, blk, n);
<a name="l23"></a> blk += n;
<a name="l24"></a> count -= n;
<a name="l25"></a> </span><span class=cF1>if</span><span class=cF0> (show_progress)
<a name="l26"></a> </span><span class=cFB>progress1</span><span class=cF0> += n;
<a name="l27"></a> </span><span class=cF5>Yield</span><span class=cF0>; </span><span class=cF2>//Prevent locking</span><span class=cF0>
<a name="l28"></a> </span><span class=cF7>}</span><span class=cF0>
<a name="l29"></a> </span><span class=cF5>Free</span><span class=cF0>(z);
<a name="l30"></a> </span><span class=cF1>if</span><span class=cF0> (show_progress)
<a name="l31"></a> </span><span class=cF7>{</span><span class=cF0>
<a name="l32"></a> *</span><span class=cFB>progress1_desc</span><span class=cF0> = </span><span class=cFE>0</span><span class=cF0>;
<a name="l33"></a> </span><span class=cFB>progress1</span><span class=cF0> = </span><span class=cFB>progress1_max</span><span class=cF0> = </span><span class=cFE>0</span><span class=cF0>;
<a name="l34"></a> </span><span class=cF7>}</span><span class=cF0>
<a name="l35"></a>}
<a name="l36"></a>
<a name="l37"></a></span><span class=cF1>Bool</span><span class=cF0> </span><span class=cF5>BlkRead</span><span class=cF0>(</span><span class=cF9>CDrive</span><span class=cF0> *drive, </span><span class=cF1>U8</span><span class=cF0> *buf, </span><span class=cF9>I64</span><span class=cF0> blk, </span><span class=cF9>I64</span><span class=cF0> count)
<a name="l38"></a>{</span><span class=cF2>//Read block count from Drive to buf.</span><span class=cF0>
<a name="l39"></a> </span><span class=cF1>Bool</span><span class=cF0> res = </span><span class=cF3>TRUE</span><span class=cF0>, unlock;
<a name="l40"></a> </span><span class=cF9>CBlkDev</span><span class=cF0> *bd = drive-&gt;bd;
<a name="l41"></a>
<a name="l42"></a> </span><span class=cF1>if</span><span class=cF0> (count &lt;= </span><span class=cFE>0</span><span class=cF0>)
<a name="l43"></a> </span><span class=cF1>return</span><span class=cF0> </span><span class=cF3>TRUE</span><span class=cF0>;
<a name="l44"></a> </span><span class=cF5>DriveCheck</span><span class=cF0>(drive);
<a name="l45"></a> </span><span class=cF1>try</span><span class=cF0>
<a name="l46"></a> </span><span class=cF7>{</span><span class=cF0>
<a name="l47"></a> unlock = </span><span class=cF5>DriveLock</span><span class=cF0>(drive);
<a name="l48"></a> </span><span class=cFD>BlkDevInit</span><span class=cF0>(bd);
<a name="l49"></a> </span><span class=cF1>if</span><span class=cF0> (drive-&gt;drv_offset &amp;&amp; blk &lt; drive-&gt;drv_offset || blk + count &gt; drive-&gt;drv_offset + drive-&gt;size)
<a name="l50"></a> </span><span class=cF5>throw</span><span class=cF0>(</span><span class=cF6>'Drive'</span><span class=cF0>);
<a name="l51"></a> </span><span class=cF1>if</span><span class=cF0> (bd-&gt;flags &amp; </span><span class=cF3>BDF_READ_CACHE</span><span class=cF0>)
<a name="l52"></a> </span><span class=cFD>RCache</span><span class=cF0>(drive, &amp;buf, &amp;blk, &amp;count);
<a name="l53"></a> </span><span class=cF1>if</span><span class=cF0> (count &gt; </span><span class=cFE>0</span><span class=cF0>)
<a name="l54"></a> {
<a name="l55"></a> </span><span class=cF1>switch</span><span class=cF0> (bd-&gt;type)
<a name="l56"></a> </span><span class=cF7>{</span><span class=cF0>
<a name="l57"></a> </span><span class=cF1>case</span><span class=cF0> </span><span class=cF3>BDT_RAM</span><span class=cF0>:
<a name="l58"></a> </span><span class=cF5>MemCopy</span><span class=cF0>(buf, bd-&gt;RAM_disk + blk &lt;&lt; </span><span class=cF3>BLK_SIZE_BITS</span><span class=cF0>, count &lt;&lt; </span><span class=cF3>BLK_SIZE_BITS</span><span class=cF0>);
<a name="l59"></a> </span><span class=cF1>break</span><span class=cF0>;
<a name="l60"></a>
<a name="l61"></a> </span><span class=cF1>case</span><span class=cF0> </span><span class=cF3>BDT_ISO_FILE_READ</span><span class=cF0>:
<a name="l62"></a> </span><span class=cF1>case</span><span class=cF0> </span><span class=cF3>BDT_ISO_FILE_WRITE</span><span class=cF0>:
<a name="l63"></a> </span><span class=cF5>FBlkRead</span><span class=cF0>(bd-&gt;file_disk, buf, blk, count);
<a name="l64"></a> </span><span class=cF1>break</span><span class=cF0>;
<a name="l65"></a>
<a name="l66"></a> </span><span class=cF1>case</span><span class=cF0> </span><span class=cF3>BDT_ATA</span><span class=cF0>:
<a name="l67"></a> res = </span><span class=cFD>AHCIAtaRBlks</span><span class=cF0>(drive, buf, blk, count);
<a name="l68"></a> </span><span class=cF1>break</span><span class=cF0>;
<a name="l69"></a> </span><span class=cF1>case</span><span class=cF0> </span><span class=cF3>BDT_ATAPI</span><span class=cF0>:
<a name="l70"></a> res = </span><span class=cFD>AHCIAtapiRBlks</span><span class=cF0>(drive, buf, blk, count);
<a name="l71"></a> </span><span class=cF1>break</span><span class=cF0>;
<a name="l72"></a> </span><span class=cF7>}</span><span class=cF0>
<a name="l73"></a> bd-&gt;last_time = </span><span class=cF5>tS</span><span class=cF0>;
<a name="l74"></a> </span><span class=cF1>if</span><span class=cF0> (bd-&gt;flags &amp; </span><span class=cF3>BDF_READ_CACHE</span><span class=cF0>)
<a name="l75"></a> </span><span class=cFD>DiskCacheAdd</span><span class=cF0>(drive, buf, blk, count);
<a name="l76"></a> }
<a name="l77"></a> </span><span class=cF1>if</span><span class=cF0> (unlock)
<a name="l78"></a> </span><span class=cF5>DriveUnlock</span><span class=cF0>(drive);
<a name="l79"></a> </span><span class=cF7>}</span><span class=cF0>
<a name="l80"></a> </span><span class=cF1>catch</span><span class=cF0>
<a name="l81"></a> </span><span class=cF1>if</span><span class=cF0> (unlock)
<a name="l82"></a> </span><span class=cF5>DriveUnlock</span><span class=cF0>(drive);
<a name="l83"></a>
<a name="l84"></a> </span><span class=cF1>return</span><span class=cF0> res;
<a name="l85"></a>}
<a name="l86"></a>
<a name="l87"></a></span><span class=cF1>Bool</span><span class=cF0> </span><span class=cF5>BlkWrite</span><span class=cF0>(</span><span class=cF9>CDrive</span><span class=cF0> *drive, </span><span class=cF1>U8</span><span class=cF0> *buf, </span><span class=cF9>I64</span><span class=cF0> blk, </span><span class=cF9>I64</span><span class=cF0> count)
<a name="l88"></a>{</span><span class=cF2>//Write block count from buf to Drive.</span><span class=cF0>
<a name="l89"></a> </span><span class=cF1>Bool</span><span class=cF0> res = </span><span class=cF3>TRUE</span><span class=cF0>, unlock;
<a name="l90"></a> </span><span class=cF9>CBlkDev</span><span class=cF0> *bd = drive-&gt;bd;
<a name="l91"></a>
<a name="l92"></a> </span><span class=cF1>if</span><span class=cF0> (count &lt;= </span><span class=cFE>0</span><span class=cF0>)
<a name="l93"></a> </span><span class=cF1>return</span><span class=cF0> </span><span class=cF3>TRUE</span><span class=cF0>;
<a name="l94"></a> </span><span class=cF5>DriveCheck</span><span class=cF0>(drive);
<a name="l95"></a> </span><span class=cF1>try</span><span class=cF0>
<a name="l96"></a> </span><span class=cF7>{</span><span class=cF0>
<a name="l97"></a> unlock = </span><span class=cF5>DriveLock</span><span class=cF0>(drive);
<a name="l98"></a> </span><span class=cFD>BlkDevInit</span><span class=cF0>(bd);
<a name="l99"></a> </span><span class=cF1>if</span><span class=cF0> (bd-&gt;flags &amp; </span><span class=cF3>BDF_READ_ONLY</span><span class=cF0> &amp;&amp; !</span><span class=cF7>(</span><span class=cF0>bd-&gt;flags &amp; </span><span class=cF3>BDF_READ_ONLY_OVERRIDE</span><span class=cF7>)</span><span class=cF0>)
<a name="l100"></a> </span><span class=cF5>throw</span><span class=cF0>(</span><span class=cF6>'BlkDev'</span><span class=cF0>);
<a name="l101"></a> </span><span class=cF1>if</span><span class=cF0> (drive-&gt;drv_offset &amp;&amp; blk&lt;drive-&gt;drv_offset || blk + count&gt;drive-&gt;drv_offset + drive-&gt;size)
<a name="l102"></a> </span><span class=cF5>throw</span><span class=cF0>(</span><span class=cF6>'Drive'</span><span class=cF0>);
<a name="l103"></a> </span><span class=cF1>if</span><span class=cF0> (count &gt; </span><span class=cFE>0</span><span class=cF0>)
<a name="l104"></a> {
<a name="l105"></a> </span><span class=cF1>switch</span><span class=cF0> (bd-&gt;type)
<a name="l106"></a> </span><span class=cF7>{</span><span class=cF0>
<a name="l107"></a> </span><span class=cF1>case</span><span class=cF0> </span><span class=cF3>BDT_RAM</span><span class=cF0>:
<a name="l108"></a> </span><span class=cF5>MemCopy</span><span class=cF0>(bd-&gt;RAM_disk + blk &lt;&lt; </span><span class=cF3>BLK_SIZE_BITS</span><span class=cF0>, buf, count &lt;&lt; </span><span class=cF3>BLK_SIZE_BITS</span><span class=cF0>);
<a name="l109"></a> </span><span class=cF1>break</span><span class=cF0>;
<a name="l110"></a>
<a name="l111"></a> </span><span class=cF1>case</span><span class=cF0> </span><span class=cF3>BDT_ISO_FILE_READ</span><span class=cF0>:
<a name="l112"></a> </span><span class=cF1>case</span><span class=cF0> </span><span class=cF3>BDT_ISO_FILE_WRITE</span><span class=cF0>:
<a name="l113"></a> </span><span class=cF5>FBlkWrite</span><span class=cF0>(bd-&gt;file_disk, buf, blk, count);
<a name="l114"></a> </span><span class=cF1>break</span><span class=cF0>;
<a name="l115"></a>
<a name="l116"></a> </span><span class=cF1>case</span><span class=cF0> </span><span class=cF3>BDT_ATA</span><span class=cF0>:
<a name="l117"></a> </span><span class=cF1>case</span><span class=cF0> </span><span class=cF3>BDT_ATAPI</span><span class=cF0>:
<a name="l118"></a> res = </span><span class=cFD>AHCIAtaWBlks</span><span class=cF0>(drive, buf, blk, count);
<a name="l119"></a> </span><span class=cF1>break</span><span class=cF0>;
<a name="l120"></a> </span><span class=cF7>}</span><span class=cF0>
<a name="l121"></a> bd-&gt;last_time = </span><span class=cF5>tS</span><span class=cF0>;
<a name="l122"></a> </span><span class=cF1>if</span><span class=cF0> (bd-&gt;flags &amp; </span><span class=cF3>BDF_READ_CACHE</span><span class=cF0>)
<a name="l123"></a> </span><span class=cFD>DiskCacheAdd</span><span class=cF0>(drive, buf, blk, count);
<a name="l124"></a> }
<a name="l125"></a> </span><span class=cF1>if</span><span class=cF0> (unlock)
<a name="l126"></a> </span><span class=cF5>DriveUnlock</span><span class=cF0>(drive);
<a name="l127"></a> </span><span class=cF7>}</span><span class=cF0>
<a name="l128"></a> </span><span class=cF1>catch</span><span class=cF0>
<a name="l129"></a> </span><span class=cF1>if</span><span class=cF0> (unlock)
<a name="l130"></a> </span><span class=cF5>DriveUnlock</span><span class=cF0>(drive);
<a name="l131"></a>
<a name="l132"></a> </span><span class=cF1>return</span><span class=cF0> res;
<a name="l133"></a>}
</span></pre></body>
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