diff options
| author | Kartik Agaram <vc@akkartik.com> | 2021-08-15 23:44:43 -0700 |
|---|---|---|
| committer | Kartik Agaram <vc@akkartik.com> | 2021-08-15 23:44:43 -0700 |
| commit | 52e3ea8a4bec791e4c2d64fb8aca9e26cdf60f25 (patch) | |
| tree | 331a98b558b8d638348b3e93ce4ef036ae70130c /html/112read-byte.subx.html | |
| parent | 8765064d6910c65ea5ed5526b27e9752df000c3d (diff) | |
| download | mu-52e3ea8a4bec791e4c2d64fb8aca9e26cdf60f25.tar.gz | |
.
Diffstat (limited to 'html/112read-byte.subx.html')
| -rw-r--r-- | html/112read-byte.subx.html | 144 |
1 files changed, 88 insertions, 56 deletions
diff --git a/html/112read-byte.subx.html b/html/112read-byte.subx.html index c639aa56..cfdfe994 100644 --- a/html/112read-byte.subx.html +++ b/html/112read-byte.subx.html @@ -1,31 +1,31 @@ -<!DOCTYPE html> +<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> <html> <head> -<meta charset="UTF-8"> +<meta http-equiv="content-type" content="text/html; charset=UTF-8"> <title>Mu - 112read-byte.subx</title> -<meta name="Generator" content="Vim/8.2"> -<meta name="plugin-version" content="vim8.1_v2"> +<meta name="Generator" content="Vim/8.1"> +<meta name="plugin-version" content="vim8.1_v1"> <meta name="syntax" content="none"> -<meta name="settings" content="number_lines,use_css,no_foldcolumn,expand_tabs,line_ids,prevent_copy=,use_input_for_pc=fallback"> +<meta name="settings" content="number_lines,use_css,no_foldcolumn,expand_tabs,line_ids,prevent_copy="> <meta name="colorscheme" content="minimal-light"> -<style> +<style type="text/css"> <!-- pre { font-family: monospace; color: #000000; background-color: #ffffd7; } body { font-size:12pt; font-family: monospace; color: #000000; background-color: #ffffd7; } a { color:inherit; } * { font-size:12pt; font-size: 1em; } .subxComment { color: #005faf; } -.subxS2Comment { color: #8a8a8a; } -.LineNr { } -.subxFunction { color: #af5f00; text-decoration: underline; } .subxS1Comment { color: #0000af; } +.subxMinorFunction { color: #875f5f; } +.LineNr { } .Constant { color: #008787; } +.subxS2Comment { color: #8a8a8a; } +.subxFunction { color: #af5f00; text-decoration: underline; } .Normal { color: #000000; background-color: #ffffd7; padding-bottom: 1px; } -.subxMinorFunction { color: #875f5f; } --> </style> -<script> +<script type='text/javascript'> <!-- /* function to open any folds containing a jumped-to line before jumping to it */ @@ -101,49 +101,49 @@ if ('onhashchange' in window) { <span id="L42" class="LineNr"> 42 </span> (<a href='317abort.subx.html#L5'>abort</a> <span class="Constant">"read-byte: empty stream"</span>) <span id="L43" class="LineNr"> 43 </span> <span class="subxComment"># never gets here</span> <span id="L44" class="LineNr"> 44 </span> -<span id="L45" class="LineNr"> 45 </span>== data -<span id="L46" class="LineNr"> 46 </span> -<span id="L47" class="LineNr"> 47 </span><span class="subxMinorFunction">_test-input-stream</span>: <span class="subxComment"># (stream byte)</span> -<span id="L48" class="LineNr"> 48 </span> <span class="subxComment"># current write index</span> -<span id="L49" class="LineNr"> 49 </span> 0/imm32 -<span id="L50" class="LineNr"> 50 </span><span class="Constant">$_test-input-stream->read</span>: -<span id="L51" class="LineNr"> 51 </span> <span class="subxComment"># current read index</span> -<span id="L52" class="LineNr"> 52 </span> 0/imm32 -<span id="L53" class="LineNr"> 53 </span> <span class="subxComment"># size</span> -<span id="L54" class="LineNr"> 54 </span> 0x400/imm32 <span class="subxComment"># 1024 bytes</span> -<span id="L55" class="LineNr"> 55 </span> <span class="subxComment"># data (64 lines x 16 bytes/line)</span> -<span id="L56" class="LineNr"> 56 </span> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 -<span id="L57" class="LineNr"> 57 </span> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 -<span id="L58" class="LineNr"> 58 </span> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 -<span id="L59" class="LineNr"> 59 </span> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 -<span id="L60" class="LineNr"> 60 </span> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 -<span id="L61" class="LineNr"> 61 </span> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 -<span id="L62" class="LineNr"> 62 </span> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 -<span id="L63" class="LineNr"> 63 </span> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 -<span id="L64" class="LineNr"> 64 </span> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 -<span id="L65" class="LineNr"> 65 </span> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 -<span id="L66" class="LineNr"> 66 </span> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 -<span id="L67" class="LineNr"> 67 </span> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 -<span id="L68" class="LineNr"> 68 </span> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 -<span id="L69" class="LineNr"> 69 </span> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 -<span id="L70" class="LineNr"> 70 </span> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 -<span id="L71" class="LineNr"> 71 </span> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 -<span id="L72" class="LineNr"> 72 </span> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 -<span id="L73" class="LineNr"> 73 </span> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 -<span id="L74" class="LineNr"> 74 </span> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 -<span id="L75" class="LineNr"> 75 </span> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 -<span id="L76" class="LineNr"> 76 </span> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 -<span id="L77" class="LineNr"> 77 </span> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 -<span id="L78" class="LineNr"> 78 </span> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 -<span id="L79" class="LineNr"> 79 </span> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 -<span id="L80" class="LineNr"> 80 </span> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 -<span id="L81" class="LineNr"> 81 </span> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 -<span id="L82" class="LineNr"> 82 </span> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 -<span id="L83" class="LineNr"> 83 </span> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 -<span id="L84" class="LineNr"> 84 </span> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 -<span id="L85" class="LineNr"> 85 </span> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 -<span id="L86" class="LineNr"> 86 </span> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 -<span id="L87" class="LineNr"> 87 </span> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 +<span id="L45" class="LineNr"> 45 </span><span class="subxComment"># Return next byte value in eax, with top 3 bytes cleared.</span> +<span id="L46" class="LineNr"> 46 </span><span class="subxComment"># Abort on reaching end of stream.</span> +<span id="L47" class="LineNr"> 47 </span><span class="subxFunction">peek-byte</span>: <span class="subxComment"># s: (addr stream byte) -> result/eax: byte</span> +<span id="L48" class="LineNr"> 48 </span> <span class="subxS1Comment"># . prologue</span> +<span id="L49" class="LineNr"> 49 </span> 55/push-ebp +<span id="L50" class="LineNr"> 50 </span> 89/copy 3/mod/direct 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 4/r32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy esp to ebp</span> +<span id="L51" class="LineNr"> 51 </span> <span class="subxS1Comment"># . save registers</span> +<span id="L52" class="LineNr"> 52 </span> 51/push-ecx +<span id="L53" class="LineNr"> 53 </span> 56/push-esi +<span id="L54" class="LineNr"> 54 </span> <span class="subxComment"># esi = s</span> +<span id="L55" class="LineNr"> 55 </span> 8b/copy 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 6/r32/esi 8/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy *(ebp+8) to esi</span> +<span id="L56" class="LineNr"> 56 </span> <span class="subxComment"># ecx = s->read</span> +<span id="L57" class="LineNr"> 57 </span> 8b/copy 1/mod/*+disp8 6/rm32/esi <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 1/r32/ecx 4/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy *(esi+4) to ecx</span> +<span id="L58" class="LineNr"> 58 </span> <span class="subxComment"># if (f->read >= f->write) abort</span> +<span id="L59" class="LineNr"> 59 </span> 3b/compare 0/mod/indirect 6/rm32/esi <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 1/r32/ecx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># compare ecx with *esi</span> +<span id="L60" class="LineNr"> 60 </span> 0f 8d/jump-if->= $peek-byte:<a href='317abort.subx.html#L5'>abort</a>/disp32 +<span id="L61" class="LineNr"> 61 </span> <span class="subxComment"># result = f->data[f->read]</span> +<span id="L62" class="LineNr"> 62 </span> 31/xor 3/mod/direct 0/rm32/eax <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0/r32/eax <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># clear eax</span> +<span id="L63" class="LineNr"> 63 </span> 8a/copy-byte 1/mod/*+disp8 4/rm32/sib 6/base/esi 1/index/ecx <span class="Normal"> . </span> 0/r32/AL 0xc/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy byte at *(esi+ecx+12) to AL</span> +<span id="L64" class="LineNr"> 64 </span><span class="Constant">$peek-byte:end</span>: +<span id="L65" class="LineNr"> 65 </span> <span class="subxS1Comment"># . restore registers</span> +<span id="L66" class="LineNr"> 66 </span> 5e/pop-to-esi +<span id="L67" class="LineNr"> 67 </span> 59/pop-to-ecx +<span id="L68" class="LineNr"> 68 </span> <span class="subxS1Comment"># . epilogue</span> +<span id="L69" class="LineNr"> 69 </span> 89/copy 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 5/r32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy ebp to esp</span> +<span id="L70" class="LineNr"> 70 </span> 5d/pop-to-ebp +<span id="L71" class="LineNr"> 71 </span> c3/return +<span id="L72" class="LineNr"> 72 </span> +<span id="L73" class="LineNr"> 73 </span><span class="Constant">$peek-byte:<a href='317abort.subx.html#L5'>abort</a></span>: +<span id="L74" class="LineNr"> 74 </span> (<a href='317abort.subx.html#L5'>abort</a> <span class="Constant">"peek-byte: empty stream"</span>) +<span id="L75" class="LineNr"> 75 </span> <span class="subxComment"># never gets here</span> +<span id="L76" class="LineNr"> 76 </span> +<span id="L77" class="LineNr"> 77 </span>== data +<span id="L78" class="LineNr"> 78 </span> +<span id="L79" class="LineNr"> 79 </span><span class="subxMinorFunction">_test-input-stream</span>: <span class="subxComment"># (stream byte)</span> +<span id="L80" class="LineNr"> 80 </span> <span class="subxComment"># current write index</span> +<span id="L81" class="LineNr"> 81 </span> 0/imm32 +<span id="L82" class="LineNr"> 82 </span><span class="Constant">$_test-input-stream->read</span>: +<span id="L83" class="LineNr"> 83 </span> <span class="subxComment"># current read index</span> +<span id="L84" class="LineNr"> 84 </span> 0/imm32 +<span id="L85" class="LineNr"> 85 </span> <span class="subxComment"># size</span> +<span id="L86" class="LineNr"> 86 </span> 0x400/imm32 <span class="subxComment"># 1024 bytes</span> +<span id="L87" class="LineNr"> 87 </span> <span class="subxComment"># data (64 lines x 16 bytes/line)</span> <span id="L88" class="LineNr"> 88 </span> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 <span id="L89" class="LineNr"> 89 </span> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 <span id="L90" class="LineNr"> 90 </span> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 @@ -176,8 +176,40 @@ if ('onhashchange' in window) { <span id="L117" class="LineNr">117 </span> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 <span id="L118" class="LineNr">118 </span> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 <span id="L119" class="LineNr">119 </span> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 -<span id="L120" class="LineNr">120 </span> -<span id="L121" class="LineNr">121 </span><span class="subxS2Comment"># . . vim:nowrap:textwidth=0</span> +<span id="L120" class="LineNr">120 </span> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 +<span id="L121" class="LineNr">121 </span> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 +<span id="L122" class="LineNr">122 </span> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 +<span id="L123" class="LineNr">123 </span> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 +<span id="L124" class="LineNr">124 </span> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 +<span id="L125" class="LineNr">125 </span> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 +<span id="L126" class="LineNr">126 </span> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 +<span id="L127" class="LineNr">127 </span> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 +<span id="L128" class="LineNr">128 </span> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 +<span id="L129" class="LineNr">129 </span> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 +<span id="L130" class="LineNr">130 </span> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 +<span id="L131" class="LineNr">131 </span> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 +<span id="L132" class="LineNr">132 </span> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 +<span id="L133" class="LineNr">133 </span> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 +<span id="L134" class="LineNr">134 </span> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 +<span id="L135" class="LineNr">135 </span> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 +<span id="L136" class="LineNr">136 </span> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 +<span id="L137" class="LineNr">137 </span> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 +<span id="L138" class="LineNr">138 </span> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 +<span id="L139" class="LineNr">139 </span> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 +<span id="L140" class="LineNr">140 </span> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 +<span id="L141" class="LineNr">141 </span> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 +<span id="L142" class="LineNr">142 </span> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 +<span id="L143" class="LineNr">143 </span> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 +<span id="L144" class="LineNr">144 </span> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 +<span id="L145" class="LineNr">145 </span> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 +<span id="L146" class="LineNr">146 </span> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 +<span id="L147" class="LineNr">147 </span> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 +<span id="L148" class="LineNr">148 </span> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 +<span id="L149" class="LineNr">149 </span> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 +<span id="L150" class="LineNr">150 </span> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 +<span id="L151" class="LineNr">151 </span> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 +<span id="L152" class="LineNr">152 </span> +<span id="L153" class="LineNr">153 </span><span class="subxS2Comment"># . . vim:nowrap:textwidth=0</span> </pre> </body> </html> |