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<a href='https://github.com/akkartik/mu/blob/master/115write-byte.subx'>https://github.com/akkartik/mu/blob/master/115write-byte.subx</a>
<pre id='vimCodeElement'>
<span id="L1" class="LineNr">  1 </span><span class="subxComment"># write-byte-buffered: add a single byte to a buffered-file.</span>
<span id="L2" class="LineNr">  2 </span><span class="subxComment"># flush: write out any buffered writes to disk.</span>
<span id="L3" class="LineNr">  3 </span><span class="subxComment">#</span>
<span id="L4" class="LineNr">  4 </span><span class="subxComment"># TODO: Come up with a way to signal failure to write to disk. This is hard</span>
<span id="L5" class="LineNr">  5 </span><span class="subxComment"># since the failure may impact previous calls that were buffered.</span>
<span id="L6" class="LineNr">  6 </span>
<span id="L7" class="LineNr">  7 </span>== data
<span id="L8" class="LineNr">  8 </span>
<span id="L9" class="LineNr">  9 </span><span class="subxComment"># The buffered file for standard output.</span>
<span id="L10" class="LineNr"> 10 </span><span class="SpecialChar">Stdout</span>:  <span class="subxComment"># buffered-file</span>
<span id="L11" class="LineNr"> 11 </span>    <span class="subxComment"># file descriptor or (addr stream byte)</span>
<span id="L12" class="LineNr"> 12 </span>    1/imm32  <span class="subxComment"># standard output</span>
<span id="L13" class="LineNr"> 13 </span><span class="Constant">$Stdout-&gt;buffer</span>:
<span id="L14" class="LineNr"> 14 </span>    <span class="subxComment"># inlined fields for a stream</span>
<span id="L15" class="LineNr"> 15 </span>    <span class="subxComment">#   current write index</span>
<span id="L16" class="LineNr"> 16 </span>    0/imm32
<span id="L17" class="LineNr"> 17 </span>    <span class="subxComment">#   current read index</span>
<span id="L18" class="LineNr"> 18 </span>    0/imm32
<span id="L19" class="LineNr"> 19 </span>    <span class="subxComment">#   size</span>
<span id="L20" class="LineNr"> 20 </span>    8/imm32
<span id="L21" class="LineNr"> 21 </span>    <span class="subxComment">#   data</span>
<span id="L22" class="LineNr"> 22 </span>    00 00 00 00 00 00 00 00  <span class="subxComment"># 8 bytes</span>
<span id="L23" class="LineNr"> 23 </span>
<span id="L24" class="LineNr"> 24 </span><span class="subxComment"># TODO: 8 bytes is too small. We'll need to grow the buffer for efficiency. But</span>
<span id="L25" class="LineNr"> 25 </span><span class="subxComment"># I don't want to type in 1024 bytes here.</span>
<span id="L26" class="LineNr"> 26 </span>
<span id="L27" class="LineNr"> 27 </span>== code
<span id="L28" class="LineNr"> 28 </span><span class="subxComment">#   instruction                     effective address                                                   register    displacement    immediate</span>
<span id="L29" class="LineNr"> 29 </span><span class="subxS1Comment"># . op          subop               mod             rm32          base        index         scale       r32</span>
<span id="L30" class="LineNr"> 30 </span><span class="subxS1Comment"># . 1-3 bytes   3 bits              2 bits          3 bits        3 bits      3 bits        2 bits      2 bits      0/1/2/4 bytes   0/1/2/4 bytes</span>
<span id="L31" class="LineNr"> 31 </span>
<span id="L32" class="LineNr"> 32 </span><span class="subxComment"># Write lower byte of 'n' to 'f'.</span>
<span id="L33" class="LineNr"> 33 </span><span class="subxFunction">write-byte-buffered</span>:  <span class="subxComment"># f: (addr buffered-file), n: int</span>
<span id="L34" class="LineNr"> 34 </span>    <span class="subxS1Comment"># . prologue</span>
<span id="L35" class="LineNr"> 35 </span>    55/push-ebp
<span id="L36" class="LineNr"> 36 </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="L37" class="LineNr"> 37 </span>    <span class="subxS1Comment"># . save registers</span>
<span id="L38" class="LineNr"> 38 </span>    51/push-ecx
<span id="L39" class="LineNr"> 39 </span>    57/push-edi
<span id="L40" class="LineNr"> 40 </span>    <span class="subxComment"># edi = f</span>
<span id="L41" class="LineNr"> 41 </span>    8b/copy                         1/mod/*+disp8   5/rm32/ebp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>          7/r32/edi   8/disp8        <span class="Normal"> . </span>                <span class="subxComment"># copy *(ebp+8) to edi</span>
<span id="L42" class="LineNr"> 42 </span>    <span class="subxComment"># ecx = f-&gt;write</span>
<span id="L43" class="LineNr"> 43 </span>    8b/copy                         1/mod/*+disp8   7/rm32/edi   <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 *(edi+4) to ecx</span>
<span id="L44" class="LineNr"> 44 </span>    <span class="subxComment"># if (f-&gt;write &gt;= f-&gt;size) flush and clear f's stream</span>
<span id="L45" class="LineNr"> 45 </span>    3b/compare                      1/mod/*+disp8   7/rm32/edi   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>          1/r32/ecx   0xc/disp8      <span class="Normal"> . </span>                <span class="subxComment"># compare ecx with *(edi+12)</span>
<span id="L46" class="LineNr"> 46 </span>    7c/jump-if-&lt;  $write-byte-buffered:to-stream/disp8
<span id="L47" class="LineNr"> 47 </span>    <span class="subxS1Comment"># . flush(f)</span>
<span id="L48" class="LineNr"> 48 </span>    <span class="subxS2Comment"># . . push args</span>
<span id="L49" class="LineNr"> 49 </span>    57/push-edi
<span id="L50" class="LineNr"> 50 </span>    <span class="subxS2Comment"># . . call</span>
<span id="L51" class="LineNr"> 51 </span>    e8/call  <a href='115write-byte.subx.html#L81'>flush</a>/disp32
<span id="L52" class="LineNr"> 52 </span>    <span class="subxS2Comment"># . . discard args</span>
<span id="L53" class="LineNr"> 53 </span>    81          0/subop/add         3/mod/direct    4/rm32/esp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>         <span class="Normal"> . </span>              4/imm32           <span class="subxComment"># add to esp</span>
<span id="L54" class="LineNr"> 54 </span>    <span class="subxS1Comment"># . clear-stream(stream = f+4)</span>
<span id="L55" class="LineNr"> 55 </span>    <span class="subxS2Comment"># . . push args</span>
<span id="L56" class="LineNr"> 56 </span>    8d/copy-address                 1/mod/*+disp8   7/rm32/edi   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>          0/r32/eax   4/disp8        <span class="Normal"> . </span>                <span class="subxComment"># copy edi+4 to eax</span>
<span id="L57" class="LineNr"> 57 </span>    50/push-eax
<span id="L58" class="LineNr"> 58 </span>    <span class="subxS2Comment"># . . call</span>
<span id="L59" class="LineNr"> 59 </span>    e8/call  <a href='106stream.subx.html#L17'>clear-stream</a>/disp32
<span id="L60" class="LineNr"> 60 </span>    <span class="subxS2Comment"># . . discard args</span>
<span id="L61" class="LineNr"> 61 </span>    81          0/subop/add         3/mod/direct    4/rm32/esp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>         <span class="Normal"> . </span>              4/imm32           <span class="subxComment"># add to esp</span>
<span id="L62" class="LineNr"> 62 </span>    <span class="subxS1Comment"># . f-&gt;write must now be 0; update its cache at ecx</span>
<span id="L63" class="LineNr"> 63 </span>    31/xor                          3/mod/direct    1/rm32/ecx   <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"># clear ecx</span>
<span id="L64" class="LineNr"> 64 </span><span class="Constant">$write-byte-buffered:to-stream</span>:
<span id="L65" class="LineNr"> 65 </span>    <span class="subxComment"># write to stream</span>
<span id="L66" class="LineNr"> 66 </span>    <span class="subxComment"># f-&gt;data[f-&gt;write] = LSB(n)</span>
<span id="L67" class="LineNr"> 67 </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="L68" class="LineNr"> 68 </span>    8a/copy-byte                    1/mod/*+disp8   5/rm32/ebp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>          0/r32/AL    0xc/disp8      <span class="Normal"> . </span>                <span class="subxComment"># copy byte at *(ebp+12) to AL</span>
<span id="L69" class="LineNr"> 69 </span>    88/copy-byte                    1/mod/*+disp8   4/rm32/sib    7/base/edi  1/index/ecx  <span class="Normal"> . </span>          0/r32/AL    0x10/disp8     <span class="Normal"> . </span>                <span class="subxComment"># copy AL to *(edi+ecx+16)</span>
<span id="L70" class="LineNr"> 70 </span>    <span class="subxComment"># ++f-&gt;write</span>
<span id="L71" class="LineNr"> 71 </span>    ff          0/subop/increment   1/mod/*+disp8   7/rm32/edi   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>          4/disp8        <span class="Normal"> . </span>                <span class="subxComment"># increment *(edi+4)</span>
<span id="L72" class="LineNr"> 72 </span><span class="Constant">$write-byte-buffered:end</span>:
<span id="L73" class="LineNr"> 73 </span>    <span class="subxS1Comment"># . restore registers</span>
<span id="L74" class="LineNr"> 74 </span>    5f/pop-to-edi
<span id="L75" class="LineNr"> 75 </span>    59/pop-to-ecx
<span id="L76" class="LineNr"> 76 </span>    <span class="subxS1Comment"># . epilogue</span>
<span id="L77" class="LineNr"> 77 </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="L78" class="LineNr"> 78 </span>    5d/pop-to-ebp
<span id="L79" class="LineNr"> 79 </span>    c3/return
<span id="L80" class="LineNr"> 80 </span>
<span id="L81" class="LineNr"> 81 </span><span class="subxFunction">flush</span>:  <span class="subxComment"># f: (addr buffered-file)</span>
<span id="L82" class="LineNr"> 82 </span>    <span class="subxS1Comment"># . prologue</span>
<span id="L83" class="LineNr"> 83 </span>    55/push-ebp
<span id="L84" class="LineNr"> 84 </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="L85" class="LineNr"> 85 </span>    <span class="subxS1Comment"># . save registers</span>
<span id="L86" class="LineNr"> 86 </span>    50/push-eax
<span id="L87" class="LineNr"> 87 </span>    51/push-ecx
<span id="L88" class="LineNr"> 88 </span>    <span class="subxComment"># eax = f</span>
<span id="L89" class="LineNr"> 89 </span>    8b/copy                         1/mod/*+disp8   5/rm32/ebp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>          0/r32/eax   8/disp8        <span class="Normal"> . </span>                <span class="subxComment"># copy *(ebp+8) to eax</span>
<span id="L90" class="LineNr"> 90 </span>    <span class="subxComment"># write-stream(f-&gt;fd, data = f+4)</span>
<span id="L91" class="LineNr"> 91 </span>      <span class="subxS2Comment"># . . push args</span>
<span id="L92" class="LineNr"> 92 </span>    8d/copy-address                 1/mod/*+disp8   0/rm32/eax   <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 eax+4 to ecx</span>
<span id="L93" class="LineNr"> 93 </span>    51/push-ecx
<span id="L94" class="LineNr"> 94 </span>    ff          6/subop/push        0/mod/indirect  0/rm32/eax   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>         <span class="Normal"> . </span>             <span class="Normal"> . </span>                <span class="subxComment"># push *eax</span>
<span id="L95" class="LineNr"> 95 </span>      <span class="subxS2Comment"># . . call</span>
<span id="L96" class="LineNr"> 96 </span>    e8/call  <a href='113write-stream.subx.html#L17'>write-stream</a>/disp32
<span id="L97" class="LineNr"> 97 </span>      <span class="subxS2Comment"># . . discard args</span>
<span id="L98" class="LineNr"> 98 </span>    81          0/subop/add         3/mod/direct    4/rm32/esp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>         <span class="Normal"> . </span>              8/imm32           <span class="subxComment"># add to esp</span>
<span id="L99" class="LineNr"> 99 </span><span class="Constant">$flush:end</span>:
<span id="L100" class="LineNr">100 </span>    <span class="subxS1Comment"># . restore registers</span>
<span id="L101" class="LineNr">101 </span>    59/pop-to-ecx
<span id="L102" class="LineNr">102 </span>    58/pop-to-eax
<span id="L103" class="LineNr">103 </span>    <span class="subxS1Comment"># . epilogue</span>
<span id="L104" class="LineNr">104 </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="L105" class="LineNr">105 </span>    5d/pop-to-ebp
<span id="L106" class="LineNr">106 </span>    c3/return
<span id="L107" class="LineNr">107 </span>
<span id="L108" class="LineNr">108 </span><span class="subxTest">test-write-byte-buffered-single</span>:
<span id="L109" class="LineNr">109 </span>    <span class="subxH1Comment"># - check that write-byte-buffered writes to first byte of 'file'</span>
<span id="L110" class="LineNr">110 </span>    <span class="subxComment"># setup</span>
<span id="L111" class="LineNr">111 </span>    <span class="subxS1Comment"># . clear-stream(_test-stream)</span>
<span id="L112" class="LineNr">112 </span>    <span class="subxS2Comment"># . . push args</span>
<span id="L113" class="LineNr">113 </span>    68/push  <a href='108write.subx.html#L151'>_test-stream</a>/imm32
<span id="L114" class="LineNr">114 </span>    <span class="subxS2Comment"># . . call</span>
<span id="L115" class="LineNr">115 </span>    e8/call  <a href='106stream.subx.html#L17'>clear-stream</a>/disp32
<span id="L116" class="LineNr">116 </span>    <span class="subxS2Comment"># . . discard args</span>
<span id="L117" class="LineNr">117 </span>    81          0/subop/add         3/mod/direct    4/rm32/esp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>         <span class="Normal"> . </span>              4/imm32           <span class="subxComment"># add to esp</span>
<span id="L118" class="LineNr">118 </span>    <span class="subxS1Comment"># . clear-stream($_test-buffered-file-&gt;buffer)</span>
<span id="L119" class="LineNr">119 </span>    <span class="subxS2Comment"># . . push args</span>
<span id="L120" class="LineNr">120 </span>    68/push  $_test-buffered-file-&gt;buffer/imm32
<span id="L121" class="LineNr">121 </span>    <span class="subxS2Comment"># . . call</span>
<span id="L122" class="LineNr">122 </span>    e8/call  <a href='106stream.subx.html#L17'>clear-stream</a>/disp32
<span id="L123" class="LineNr">123 </span>    <span class="subxS2Comment"># . . discard args</span>
<span id="L124" class="LineNr">124 </span>    81          0/subop/add         3/mod/direct    4/rm32/esp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>         <span class="Normal"> . </span>              4/imm32           <span class="subxComment"># add to esp</span>
<span id="L125" class="LineNr">125 </span>    <span class="subxComment"># write-byte-buffered(_test-buffered-file, 'A')</span>
<span id="L126" class="LineNr">126 </span>    <span class="subxS2Comment"># . . push args</span>
<span id="L127" class="LineNr">127 </span>    68/push  0x41/imm32
<span id="L128" class="LineNr">128 </span>    68/push  <a href='112read-byte.subx.html#L318'>_test-buffered-file</a>/imm32
<span id="L129" class="LineNr">129 </span>    <span class="subxS2Comment"># . . call</span>
<span id="L130" class="LineNr">130 </span>    e8/call  <a href='115write-byte.subx.html#L33'>write-byte-buffered</a>/disp32
<span id="L131" class="LineNr">131 </span>    <span class="subxS2Comment"># . . discard args</span>
<span id="L132" class="LineNr">132 </span>    81          0/subop/add         3/mod/direct    4/rm32/esp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>         <span class="Normal"> . </span>              8/imm32           <span class="subxComment"># add to esp</span>
<span id="L133" class="LineNr">133 </span>    <span class="subxComment"># flush(_test-buffered-file)</span>
<span id="L134" class="LineNr">134 </span>    <span class="subxS2Comment"># . . push args</span>
<span id="L135" class="LineNr">135 </span>    68/push  <a href='112read-byte.subx.html#L318'>_test-buffered-file</a>/imm32
<span id="L136" class="LineNr">136 </span>    <span class="subxS2Comment"># . . call</span>
<span id="L137" class="LineNr">137 </span>    e8/call  <a href='115write-byte.subx.html#L81'>flush</a>/disp32
<span id="L138" class="LineNr">138 </span>    <span class="subxS2Comment"># . . discard args</span>
<span id="L139" class="LineNr">139 </span>    81          0/subop/add         3/mod/direct    4/rm32/esp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>         <span class="Normal"> . </span>              4/imm32           <span class="subxComment"># add to esp</span>
<span id="L140" class="LineNr">140 </span>    <span class="subxComment"># check-stream-equal(_test-stream, &quot;A&quot;, msg)</span>
<span id="L141" class="LineNr">141 </span>    <span class="subxS2Comment"># . . push args</span>
<span id="L142" class="LineNr">142 </span>    68/push  <span class="Constant">&quot;F - test-write-byte-buffered-single&quot;</span>/imm32
<span id="L143" class="LineNr">143 </span>    68/push  <span class="Constant">&quot;A&quot;</span>/imm32
<span id="L144" class="LineNr">144 </span>    68/push  <a href='108write.subx.html#L151'>_test-stream</a>/imm32
<span id="L145" class="LineNr">145 </span>    <span class="subxS2Comment"># . . call</span>
<span id="L146" class="LineNr">146 </span>    e8/call  <a href='109stream-equal.subx.html#L194'>check-stream-equal</a>/disp32
<span id="L147" class="LineNr">147 </span>    <span class="subxS2Comment"># . . discard args</span>
<span id="L148" class="LineNr">148 </span>    81          0/subop/add         3/mod/direct    4/rm32/esp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>         <span class="Normal"> . </span>              0xc/imm32         <span class="subxComment"># add to esp</span>
<span id="L149" class="LineNr">149 </span>    <span class="subxS1Comment"># . end</span>
<span id="L150" class="LineNr">150 </span>    c3/return
<span id="L151" class="LineNr">151 </span>
<span id="L152" class="LineNr">152 </span><span class="subxTest">test-write-byte-buffered-multiple-flushes</span>:
<span id="L153" class="LineNr">153 </span>    <span class="subxH1Comment"># - check that write-byte-buffered correctly flushes buffered data</span>
<span id="L154" class="LineNr">154 </span>    <span class="subxComment"># setup</span>
<span id="L155" class="LineNr">155 </span>    <span class="subxS1Comment"># . clear-stream(_test-stream)</span>
<span id="L156" class="LineNr">156 </span>    <span class="subxS2Comment"># . . push args</span>
<span id="L157" class="LineNr">157 </span>    68/push  <a href='108write.subx.html#L151'>_test-stream</a>/imm32
<span id="L158" class="LineNr">158 </span>    <span class="subxS2Comment"># . . call</span>
<span id="L159" class="LineNr">159 </span>    e8/call  <a href='106stream.subx.html#L17'>clear-stream</a>/disp32
<span id="L160" class="LineNr">160 </span>    <span class="subxS2Comment"># . . discard args</span>
<span id="L161" class="LineNr">161 </span>    81          0/subop/add         3/mod/direct    4/rm32/esp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>         <span class="Normal"> . </span>              4/imm32           <span class="subxComment"># add to esp</span>
<span id="L162" class="LineNr">162 </span>    <span class="subxS1Comment"># . clear-stream($_test-buffered-file-&gt;buffer)</span>
<span id="L163" class="LineNr">163 </span>    <span class="subxS2Comment"># . . push args</span>
<span id="L164" class="LineNr">164 </span>    68/push  $_test-buffered-file-&gt;buffer/imm32
<span id="L165" class="LineNr">165 </span>    <span class="subxS2Comment"># . . call</span>
<span id="L166" class="LineNr">166 </span>    e8/call  <a href='106stream.subx.html#L17'>clear-stream</a>/disp32
<span id="L167" class="LineNr">167 </span>    <span class="subxS2Comment"># . . discard args</span>
<span id="L168" class="LineNr">168 </span>    81          0/subop/add         3/mod/direct    4/rm32/esp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>         <span class="Normal"> . </span>              4/imm32           <span class="subxComment"># add to esp</span>
<span id="L169" class="LineNr">169 </span>    <span class="subxComment"># fill up the buffer for _test-buffered-file</span>
<span id="L170" class="LineNr">170 </span>    <span class="subxS1Comment"># . write($_test-buffered-file-&gt;buffer, &quot;abcdef&quot;)</span>
<span id="L171" class="LineNr">171 </span>    <span class="subxS2Comment"># . . push args</span>
<span id="L172" class="LineNr">172 </span>    68/push  <span class="Constant">&quot;abcdef&quot;</span>/imm32
<span id="L173" class="LineNr">173 </span>    68/push  $_test-buffered-file-&gt;buffer/imm32
<span id="L174" class="LineNr">174 </span>    <span class="subxS2Comment"># . . call</span>
<span id="L175" class="LineNr">175 </span>    e8/call  <a href='108write.subx.html#L24'>write</a>/disp32
<span id="L176" class="LineNr">176 </span>    <span class="subxS2Comment"># . . discard args</span>
<span id="L177" class="LineNr">177 </span>    81          0/subop/add         3/mod/direct    4/rm32/esp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>         <span class="Normal"> . </span>              8/imm32           <span class="subxComment"># add to esp</span>
<span id="L178" class="LineNr">178 </span>    <span class="subxComment"># write-byte-buffered(_test-buffered-file, 'g')</span>
<span id="L179" class="LineNr">179 </span>    <span class="subxS2Comment"># . . push args</span>
<span id="L180" class="LineNr">180 </span>    68/push  0x67/imm32
<span id="L181" class="LineNr">181 </span>    68/push  <a href='112read-byte.subx.html#L318'>_test-buffered-file</a>/imm32
<span id="L182" class="LineNr">182 </span>    <span class="subxS2Comment"># . . call</span>
<span id="L183" class="LineNr">183 </span>    e8/call  <a href='115write-byte.subx.html#L33'>write-byte-buffered</a>/disp32
<span id="L184" class="LineNr">184 </span>    <span class="subxS2Comment"># . . discard args</span>
<span id="L185" class="LineNr">185 </span>    81          0/subop/add         3/mod/direct    4/rm32/esp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>         <span class="Normal"> . </span>              8/imm32           <span class="subxComment"># add to esp</span>
<span id="L186" class="LineNr">186 </span>    <span class="subxComment"># flush(_test-buffered-file)</span>
<span id="L187" class="LineNr">187 </span>    <span class="subxS2Comment"># . . push args</span>
<span id="L188" class="LineNr">188 </span>    68/push  <a href='112read-byte.subx.html#L318'>_test-buffered-file</a>/imm32
<span id="L189" class="LineNr">189 </span>    <span class="subxS2Comment"># . . call</span>
<span id="L190" class="LineNr">190 </span>    e8/call  <a href='115write-byte.subx.html#L81'>flush</a>/disp32
<span id="L191" class="LineNr">191 </span>    <span class="subxS2Comment"># . . discard args</span>
<span id="L192" class="LineNr">192 </span>    81          0/subop/add         3/mod/direct    4/rm32/esp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>         <span class="Normal"> . </span>              4/imm32           <span class="subxComment"># add to esp</span>
<span id="L193" class="LineNr">193 </span>    <span class="subxComment"># check-stream-equal(_test-stream, &quot;abcdefg&quot;, msg)</span>
<span id="L194" class="LineNr">194 </span>    <span class="subxS2Comment"># . . push args</span>
<span id="L195" class="LineNr">195 </span>    68/push  <span class="Constant">&quot;F - test-write-byte-buffered-multiple-flushes&quot;</span>/imm32
<span id="L196" class="LineNr">196 </span>    68/push  <span class="Constant">&quot;abcdefg&quot;</span>/imm32
<span id="L197" class="LineNr">197 </span>    68/push  <a href='108write.subx.html#L151'>_test-stream</a>/imm32
<span id="L198" class="LineNr">198 </span>    <span class="subxS2Comment"># . . call</span>
<span id="L199" class="LineNr">199 </span>    e8/call  <a href='109stream-equal.subx.html#L194'>check-stream-equal</a>/disp32
<span id="L200" class="LineNr">200 </span>    <span class="subxS2Comment"># . . discard args</span>
<span id="L201" class="LineNr">201 </span>    81          0/subop/add         3/mod/direct    4/rm32/esp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>         <span class="Normal"> . </span>              0xc/imm32         <span class="subxComment"># add to esp</span>
<span id="L202" class="LineNr">202 </span>    <span class="subxS1Comment"># . end</span>
<span id="L203" class="LineNr">203 </span>    c3/return
<span id="L204" class="LineNr">204 </span>
<span id="L205" class="LineNr">205 </span><span class="subxH1Comment"># - variant without buffering</span>
<span id="L206" class="LineNr">206 </span>
<span id="L207" class="LineNr">207 </span><span class="subxComment"># Write lower byte of 'n' to 'f'.</span>
<span id="L208" class="LineNr">208 </span><span class="subxFunction">append-byte</span>:  <span class="subxComment"># f: (addr stream byte), n: int</span>
<span id="L209" class="LineNr">209 </span>    <span class="subxS1Comment"># . prologue</span>
<span id="L210" class="LineNr">210 </span>    55/push-ebp
<span id="L211" class="LineNr">211 </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="L212" class="LineNr">212 </span>    <span class="subxS1Comment"># . save registers</span>
<span id="L213" class="LineNr">213 </span>    51/push-ecx
<span id="L214" class="LineNr">214 </span>    57/push-edi
<span id="L215" class="LineNr">215 </span>    <span class="subxComment"># edi = f</span>
<span id="L216" class="LineNr">216 </span>    8b/copy                         1/mod/*+disp8   5/rm32/ebp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>          7/r32/edi   8/disp8        <span class="Normal"> . </span>                <span class="subxComment"># copy *(ebp+8) to edi</span>
<span id="L217" class="LineNr">217 </span>    <span class="subxComment"># ecx = f-&gt;write</span>
<span id="L218" class="LineNr">218 </span>    8b/copy                         0/mod/indirect  7/rm32/edi   <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"># copy *edi to ecx</span>
<span id="L219" class="LineNr">219 </span>    <span class="subxComment"># if (f-&gt;write &gt;= f-&gt;size) abort</span>
<span id="L220" class="LineNr">220 </span>    3b/compare                      1/mod/*+disp8   7/rm32/edi   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>          1/r32/ecx   8/disp8        <span class="Normal"> . </span>                <span class="subxComment"># compare ecx with *(edi+8)</span>
<span id="L221" class="LineNr">221 </span>    7d/jump-if-&gt;=  $append-byte:abort/disp8
<span id="L222" class="LineNr">222 </span><span class="Constant">$append-byte:to-stream</span>:
<span id="L223" class="LineNr">223 </span>    <span class="subxComment"># write to stream</span>
<span id="L224" class="LineNr">224 </span>    <span class="subxComment"># f-&gt;data[f-&gt;write] = LSB(n)</span>
<span id="L225" class="LineNr">225 </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="L226" class="LineNr">226 </span>    8a/copy-byte                    1/mod/*+disp8   5/rm32/ebp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>          0/r32/AL    0xc/disp8      <span class="Normal"> . </span>                <span class="subxComment"># copy byte at *(ebp+12) to AL</span>
<span id="L227" class="LineNr">227 </span>    88/copy-byte                    1/mod/*+disp8   4/rm32/sib    7/base/edi  1/index/ecx  <span class="Normal"> . </span>          0/r32/AL    0xc/disp8      <span class="Normal"> . </span>                <span class="subxComment"># copy AL to *(edi+ecx+12)</span>
<span id="L228" class="LineNr">228 </span>    <span class="subxComment"># ++f-&gt;write</span>
<span id="L229" class="LineNr">229 </span>    ff          0/subop/increment   0/mod/indirect  7/rm32/edi   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>         <span class="Normal"> . </span>             <span class="Normal"> . </span>                <span class="subxComment"># increment *edi</span>
<span id="L230" class="LineNr">230 </span><span class="Constant">$append-byte:end</span>:
<span id="L231" class="LineNr">231 </span>    <span class="subxS1Comment"># . restore registers</span>
<span id="L232" class="LineNr">232 </span>    5f/pop-to-edi
<span id="L233" class="LineNr">233 </span>    59/pop-to-ecx
<span id="L234" class="LineNr">234 </span>    <span class="subxS1Comment"># . epilogue</span>
<span id="L235" class="LineNr">235 </span>    89/copy                         3/mod/direct    4/rm32/esp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>          5/r32/ebp  <span class="Normal"> . </span>             <span class="Normal"> . </span>                <span class="subxComment"># copy ebp to esp</span>
<span id="L236" class="LineNr">236 </span>    5d/pop-to-ebp
<span id="L237" class="LineNr">237 </span>    c3/return
<span id="L238" class="LineNr">238 </span>
<span id="L239" class="LineNr">239 </span><span class="Constant">$append-byte:abort</span>:
<span id="L240" class="LineNr">240 </span>    <span class="subxS1Comment"># . _write(2/stderr, error)</span>
<span id="L241" class="LineNr">241 </span>    <span class="subxS2Comment"># . . push args</span>
<span id="L242" class="LineNr">242 </span>    68/push  <span class="Constant">&quot;append-byte: out of space\n&quot;</span>/imm32
<span id="L243" class="LineNr">243 </span>    68/push  2/imm32/stderr
<span id="L244" class="LineNr">244 </span>    <span class="subxS2Comment"># . . call</span>
<span id="L245" class="LineNr">245 </span>    e8/call  <a href='101_write.subx.html#L12'>_write</a>/disp32
<span id="L246" class="LineNr">246 </span>    <span class="subxS2Comment"># . . discard args</span>
<span id="L247" class="LineNr">247 </span>    81          0/subop/add         3/mod/direct    4/rm32/esp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>         <span class="Normal"> . </span>              8/imm32           <span class="subxComment"># add to esp</span>
<span id="L248" class="LineNr">248 </span>    <span class="subxS1Comment"># . syscall(exit, 1)</span>
<span id="L249" class="LineNr">249 </span>    bb/copy-to-ebx  1/imm32
<span id="L250" class="LineNr">250 </span>    e8/call  syscall_exit/disp32
<span id="L251" class="LineNr">251 </span>    <span class="subxComment"># never gets here</span>
<span id="L252" class="LineNr">252 </span>
<span id="L253" class="LineNr">253 </span><span class="subxTest">test-append-byte-single</span>:
<span id="L254" class="LineNr">254 </span>    <span class="subxH1Comment"># - check that append-byte writes to first byte of 'file'</span>
<span id="L255" class="LineNr">255 </span>    <span class="subxComment"># setup</span>
<span id="L256" class="LineNr">256 </span>    <span class="subxS1Comment"># . clear-stream(_test-stream)</span>
<span id="L257" class="LineNr">257 </span>    <span class="subxS2Comment"># . . push args</span>
<span id="L258" class="LineNr">258 </span>    68/push  <a href='108write.subx.html#L151'>_test-stream</a>/imm32
<span id="L259" class="LineNr">259 </span>    <span class="subxS2Comment"># . . call</span>
<span id="L260" class="LineNr">260 </span>    e8/call  <a href='106stream.subx.html#L17'>clear-stream</a>/disp32
<span id="L261" class="LineNr">261 </span>    <span class="subxS2Comment"># . . discard args</span>
<span id="L262" class="LineNr">262 </span>    81          0/subop/add         3/mod/direct    4/rm32/esp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>         <span class="Normal"> . </span>              4/imm32           <span class="subxComment"># add to esp</span>
<span id="L263" class="LineNr">263 </span>    <span class="subxComment"># append-byte(_test-stream, 'A')</span>
<span id="L264" class="LineNr">264 </span>    <span class="subxS2Comment"># . . push args</span>
<span id="L265" class="LineNr">265 </span>    68/push  0x41/imm32
<span id="L266" class="LineNr">266 </span>    68/push  <a href='108write.subx.html#L151'>_test-stream</a>/imm32
<span id="L267" class="LineNr">267 </span>    <span class="subxS2Comment"># . . call</span>
<span id="L268" class="LineNr">268 </span>    e8/call  <a href='115write-byte.subx.html#L208'>append-byte</a>/disp32
<span id="L269" class="LineNr">269 </span>    <span class="subxS2Comment"># . . discard args</span>
<span id="L270" class="LineNr">270 </span>    81          0/subop/add         3/mod/direct    4/rm32/esp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>         <span class="Normal"> . </span>              8/imm32           <span class="subxComment"># add to esp</span>
<span id="L271" class="LineNr">271 </span>    <span class="subxComment"># check-stream-equal(_test-stream, &quot;A&quot;, msg)</span>
<span id="L272" class="LineNr">272 </span>    <span class="subxS2Comment"># . . push args</span>
<span id="L273" class="LineNr">273 </span>    68/push  <span class="Constant">&quot;F - test-append-byte-single&quot;</span>/imm32
<span id="L274" class="LineNr">274 </span>    68/push  <span class="Constant">&quot;A&quot;</span>/imm32
<span id="L275" class="LineNr">275 </span>    68/push  <a href='108write.subx.html#L151'>_test-stream</a>/imm32
<span id="L276" class="LineNr">276 </span>    <span class="subxS2Comment"># . . call</span>
<span id="L277" class="LineNr">277 </span>    e8/call  <a href='109stream-equal.subx.html#L194'>check-stream-equal</a>/disp32
<span id="L278" class="LineNr">278 </span>    <span class="subxS2Comment"># . . discard args</span>
<span id="L279" class="LineNr">279 </span>    81          0/subop/add         3/mod/direct    4/rm32/esp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>         <span class="Normal"> . </span>              0xc/imm32         <span class="subxComment"># add to esp</span>
<span id="L280" class="LineNr">280 </span>    <span class="subxS1Comment"># . end</span>
<span id="L281" class="LineNr">281 </span>    c3/return
<span id="L282" class="LineNr">282 </span>
<span id="L283" class="LineNr">283 </span>== data
<span id="L284" class="LineNr">284 </span>
<span id="L285" class="LineNr">285 </span><span class="subxMinorFunction">_test-output-stream</span>:  <span class="subxComment"># (stream byte)</span>
<span id="L286" class="LineNr">286 </span>    <span class="subxComment"># current write index</span>
<span id="L287" class="LineNr">287 </span>    0/imm32
<span id="L288" class="LineNr">288 </span>    <span class="subxComment"># current read index</span>
<span id="L289" class="LineNr">289 </span>    0/imm32
<span id="L290" class="LineNr">290 </span>    <span class="subxComment"># size</span>
<span id="L291" class="LineNr">291 </span>    0x800/imm32  <span class="subxComment"># 2048 bytes</span>
<span id="L292" class="LineNr">292 </span>    <span class="subxComment"># data (128 lines x 16 bytes/line)</span>
<span id="L293" class="LineNr">293 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L294" class="LineNr">294 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L295" class="LineNr">295 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L296" class="LineNr">296 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L297" class="LineNr">297 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L298" class="LineNr">298 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L299" class="LineNr">299 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L300" class="LineNr">300 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L301" class="LineNr">301 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L302" class="LineNr">302 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L303" class="LineNr">303 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L304" class="LineNr">304 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L305" class="LineNr">305 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L306" class="LineNr">306 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L307" class="LineNr">307 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L308" class="LineNr">308 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L309" class="LineNr">309 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L310" class="LineNr">310 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L311" class="LineNr">311 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L312" class="LineNr">312 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L313" class="LineNr">313 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L314" class="LineNr">314 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L315" class="LineNr">315 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L316" class="LineNr">316 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L317" class="LineNr">317 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L318" class="LineNr">318 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L319" class="LineNr">319 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L320" class="LineNr">320 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L321" class="LineNr">321 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L322" class="LineNr">322 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L323" class="LineNr">323 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L324" class="LineNr">324 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L325" class="LineNr">325 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L326" class="LineNr">326 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L327" class="LineNr">327 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L328" class="LineNr">328 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L329" class="LineNr">329 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L330" class="LineNr">330 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L331" class="LineNr">331 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L332" class="LineNr">332 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L333" class="LineNr">333 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L334" class="LineNr">334 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L335" class="LineNr">335 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L336" class="LineNr">336 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L337" class="LineNr">337 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L338" class="LineNr">338 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L339" class="LineNr">339 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L340" class="LineNr">340 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L341" class="LineNr">341 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L342" class="LineNr">342 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L343" class="LineNr">343 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L344" class="LineNr">344 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L345" class="LineNr">345 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L346" class="LineNr">346 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L347" class="LineNr">347 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L348" class="LineNr">348 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L349" class="LineNr">349 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L350" class="LineNr">350 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L351" class="LineNr">351 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L352" class="LineNr">352 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L353" class="LineNr">353 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L354" class="LineNr">354 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L355" class="LineNr">355 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L356" class="LineNr">356 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L357" class="LineNr">357 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L358" class="LineNr">358 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L359" class="LineNr">359 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L360" class="LineNr">360 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L361" class="LineNr">361 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L362" class="LineNr">362 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L363" class="LineNr">363 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L364" class="LineNr">364 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L365" class="LineNr">365 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L366" class="LineNr">366 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L367" class="LineNr">367 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L368" class="LineNr">368 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L369" class="LineNr">369 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L370" class="LineNr">370 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L371" class="LineNr">371 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L372" class="LineNr">372 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L373" class="LineNr">373 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L374" class="LineNr">374 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L375" class="LineNr">375 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L376" class="LineNr">376 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L377" class="LineNr">377 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L378" class="LineNr">378 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L379" class="LineNr">379 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L380" class="LineNr">380 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L381" class="LineNr">381 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L382" class="LineNr">382 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L383" class="LineNr">383 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L384" class="LineNr">384 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L385" class="LineNr">385 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L386" class="LineNr">386 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L387" class="LineNr">387 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L388" class="LineNr">388 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L389" class="LineNr">389 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L390" class="LineNr">390 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L391" class="LineNr">391 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L392" class="LineNr">392 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L393" class="LineNr">393 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L394" class="LineNr">394 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L395" class="LineNr">395 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L396" class="LineNr">396 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L397" class="LineNr">397 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L398" class="LineNr">398 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L399" class="LineNr">399 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L400" class="LineNr">400 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L401" class="LineNr">401 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L402" class="LineNr">402 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L403" class="LineNr">403 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L404" class="LineNr">404 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L405" class="LineNr">405 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L406" class="LineNr">406 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L407" class="LineNr">407 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L408" class="LineNr">408 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L409" class="LineNr">409 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L410" class="LineNr">410 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L411" class="LineNr">411 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L412" class="LineNr">412 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L413" class="LineNr">413 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L414" class="LineNr">414 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L415" class="LineNr">415 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L416" class="LineNr">416 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L417" class="LineNr">417 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L418" class="LineNr">418 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L419" class="LineNr">419 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L420" class="LineNr">420 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L421" class="LineNr">421 </span>
<span id="L422" class="LineNr">422 </span><span class="subxComment"># a test buffered file for _test-output-stream</span>
<span id="L423" class="LineNr">423 </span><span class="subxMinorFunction">_test-output-buffered-file</span>:  <span class="subxComment"># buffered-file</span>
<span id="L424" class="LineNr">424 </span>    <span class="subxComment"># file descriptor or (addr stream byte)</span>
<span id="L425" class="LineNr">425 </span>    <a href='115write-byte.subx.html#L285'>_test-output-stream</a>/imm32
<span id="L426" class="LineNr">426 </span><span class="Constant">$_test-output-buffered-file-&gt;buffer</span>:
<span id="L427" class="LineNr">427 </span>    <span class="subxComment"># current write index</span>
<span id="L428" class="LineNr">428 </span>    0/imm32
<span id="L429" class="LineNr">429 </span>    <span class="subxComment"># current read index</span>
<span id="L430" class="LineNr">430 </span>    0/imm32
<span id="L431" class="LineNr">431 </span>    <span class="subxComment"># size</span>
<span id="L432" class="LineNr">432 </span>    6/imm32
<span id="L433" class="LineNr">433 </span>    <span class="subxComment"># data</span>
<span id="L434" class="LineNr">434 </span>    00 00 00 00 00 00  <span class="subxComment"># 6 bytes</span>
<span id="L435" class="LineNr">435 </span>
<span id="L436" class="LineNr">436 </span><span class="subxMinorFunction">_test-error-stream</span>:  <span class="subxComment"># (stream byte)</span>
<span id="L437" class="LineNr">437 </span>    <span class="subxComment"># current write index</span>
<span id="L438" class="LineNr">438 </span>    0/imm32
<span id="L439" class="LineNr">439 </span>    <span class="subxComment"># current read index</span>
<span id="L440" class="LineNr">440 </span>    0/imm32
<span id="L441" class="LineNr">441 </span>    <span class="subxComment"># line</span>
<span id="L442" class="LineNr">442 </span>    0x80/imm32  <span class="subxComment"># 128 bytes</span>
<span id="L443" class="LineNr">443 </span>    <span class="subxComment"># data (8 lines x 16 bytes/line)</span>
<span id="L444" class="LineNr">444 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L445" class="LineNr">445 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L446" class="LineNr">446 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L447" class="LineNr">447 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L448" class="LineNr">448 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L449" class="LineNr">449 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L450" class="LineNr">450 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L451" class="LineNr">451 </span>    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
<span id="L452" class="LineNr">452 </span>
<span id="L453" class="LineNr">453 </span><span class="subxComment"># a test buffered file for _test-error-stream</span>
<span id="L454" class="LineNr">454 </span><span class="subxMinorFunction">_test-error-buffered-file</span>:  <span class="subxComment"># buffered-file</span>
<span id="L455" class="LineNr">455 </span>    <span class="subxComment"># file descriptor or (addr stream byte)</span>
<span id="L456" class="LineNr">456 </span>    <a href='115write-byte.subx.html#L436'>_test-error-stream</a>/imm32
<span id="L457" class="LineNr">457 </span><span class="Constant">$_test-error-buffered-file-&gt;buffer</span>:
<span id="L458" class="LineNr">458 </span>    <span class="subxComment"># current write index</span>
<span id="L459" class="LineNr">459 </span>    0/imm32
<span id="L460" class="LineNr">460 </span>    <span class="subxComment"># current read index</span>
<span id="L461" class="LineNr">461 </span>    0/imm32
<span id="L462" class="LineNr">462 </span>    <span class="subxComment"># size</span>
<span id="L463" class="LineNr">463 </span>    6/imm32
<span id="L464" class="LineNr">464 </span>    <span class="subxComment"># data</span>
<span id="L465" class="LineNr">465 </span>    00 00 00 00 00 00  <span class="subxComment"># 6 bytes</span>
<span id="L466" class="LineNr">466 </span>
<span id="L467" class="LineNr">467 </span><span class="subxS2Comment"># . . vim&#0058;nowrap:textwidth=0</span>
</pre>
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