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<font color="#ffffff" face="helvetica, arial"> <br><big><big><strong><a href="ranger.html"><font color="#ffffff">ranger</font></a>.<a href="ranger.gui.html"><font color="#ffffff">gui</font></a>.<a href="ranger.gui.widgets.html"><font color="#ffffff">widgets</font></a>.process_manager</strong></big></big></font></td
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<p><tt>The process manager allows you to modify what the loader is doing.</tt></p>
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<dt><font face="helvetica, arial"><a href="ranger.gui.widgets.process_manager.html#DummyLoadObject">DummyLoadObject</a>
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<dt><font face="helvetica, arial"><a href="ranger.gui.widgets.process_manager.html#ProcessManager">ProcessManager</a>(<a href="ranger.gui.widgets.html#Widget">ranger.gui.widgets.Widget</a>, <a href="ranger.ext.accumulator.html#Accumulator">ranger.ext.accumulator.Accumulator</a>)
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<title>Mu - linux/105string-equal.subx</title>
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<a href='https://github.com/akkartik/mu/blob/main/linux/105string-equal.subx'>https://github.com/akkartik/mu/blob/main/linux/105string-equal.subx</a>
<pre id='vimCodeElement'>
<span id="L1" class="LineNr"> 1 </span><span class="subxComment"># Comparing 'regular' size-prefixed strings.</span>
<span id="L2" class="LineNr"> 2 </span>
<span id="L3" class="LineNr"> 3 </span>== code
<span id="L4" class="LineNr"> 4 </span><span class="subxComment"># instruction effective address register displacement immediate</span>
<span id="L5" class="LineNr"> 5 </span><span class="subxS1Comment"># . op subop mod rm32 base index scale r32</span>
<span id="L6" class="LineNr"> 6 </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="L7" class="LineNr"> 7 </span>
<span id="L8" class="LineNr"> 8 </span><span class="SpecialChar">Entry</span>: <span class="subxComment"># run all tests</span>
<span id="L9" class="LineNr"> 9 </span><span class="CommentedCode">#? e8/call test-compare-equal-strings/disp32</span>
<span id="L10" class="LineNr"> 10 </span> e8/call run-tests/disp32 <span class="subxComment"># 'run-tests' is a function created automatically by SubX. It calls all functions that start with 'test-'.</span>
<span id="L11" class="LineNr"> 11 </span> <span class="subxComment"># syscall(exit, Num-test-failures)</span>
<span id="L12" class="LineNr"> 12 </span> 8b/copy 0/mod/indirect 5/rm32/.disp32 <span class="Normal"> . </span> <span class="Normal"> . </span> 3/r32/ebx <span class="SpecialChar"><a href='102test.subx.html#L89'>Num-test-failures</a></span>/disp32 <span class="subxComment"># copy *Num-test-failures to ebx</span>
<span id="L13" class="LineNr"> 13 </span> e8/call <a href='000init.subx.html#L18'>syscall_exit</a>/disp32
<span id="L14" class="LineNr"> 14 </span>
<span id="L15" class="LineNr"> 15 </span><span class="subxFunction">string-equal?</span>: <span class="subxComment"># s: (addr array byte), benchmark: (addr array byte) -> result/eax: boolean</span>
<span id="L16" class="LineNr"> 16 </span> <span class="subxComment"># pseudocode:</span>
<span id="L17" class="LineNr"> 17 </span> <span class="subxComment"># if (s->size != benchmark->size) return false</span>
<span id="L18" class="LineNr"> 18 </span> <span class="subxComment"># return string-starts-with?(s, benchmark)</span>
<span id="L19" class="LineNr"> 19 </span> <span class="subxComment">#</span>
<span id="L20" class="LineNr"> 20 </span> <span class="subxS1Comment"># . prologue</span>
<span id="L21" class="LineNr"> 21 </span> 55/push-ebp
<span id="L22" class="LineNr"> 22 </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="L23" class="LineNr"> 23 </span> <span class="subxS1Comment"># . save registers</span>
<span id="L24" class="LineNr"> 24 </span> 51/push-ecx
<span id="L25" class="LineNr"> 25 </span> 56/push-esi
<span id="L26" class="LineNr"> 26 </span> 57/push-edi
<span id="L27" class="LineNr"> 27 </span> <span class="subxComment"># esi = s</span>
<span id="L28" class="LineNr"> 28 </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="L29" class="LineNr"> 29 </span> <span class="subxComment"># edi = benchmark</span>
<span id="L30" class="LineNr"> 30 </span> 8b/copy 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 7/r32/edi 0xc/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy *(ebp+12) to edi</span>
<span id="L31" class="LineNr"> 31 </span> <span class="subxComment"># ecx = s->size</span>
<span id="L32" class="LineNr"> 32 </span> 8b/copy 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"># copy *esi to ecx</span>
<span id="L33" class="LineNr"> 33 </span><span class="Constant">$string-equal?:sizes</span>:
<span id="L34" class="LineNr"> 34 </span> <span class="subxComment"># if (ecx != benchmark->size) return false</span>
<span id="L35" class="LineNr"> 35 </span> 39/compare 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"># compare *edi and ecx</span>
<span id="L36" class="LineNr"> 36 </span> b8/copy-to-eax 0/imm32/false
<span id="L37" class="LineNr"> 37 </span> 75/jump-if-!= $string-equal?:end/disp8
<span id="L38" class="LineNr"> 38 </span><span class="Constant">$string-equal?:contents</span>:
<span id="L39" class="LineNr"> 39 </span> <span class="subxComment"># string-starts-with?(s, benchmark)</span>
<span id="L40" class="LineNr"> 40 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L41" class="LineNr"> 41 </span> ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0xc/disp8 <span class="Normal"> . </span> <span class="subxComment"># push *(ebp+12)</span>
<span id="L42" class="LineNr"> 42 </span> ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 8/disp8 <span class="Normal"> . </span> <span class="subxComment"># push *(ebp+8)</span>
<span id="L43" class="LineNr"> 43 </span> <span class="subxS2Comment"># . . call</span>
<span id="L44" class="LineNr"> 44 </span> e8/call <a href='105string-equal.subx.html#L57'>string-starts-with?</a>/disp32
<span id="L45" class="LineNr"> 45 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L46" class="LineNr"> 46 </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="L47" class="LineNr"> 47 </span><span class="Constant">$string-equal?:end</span>:
<span id="L48" class="LineNr"> 48 </span> <span class="subxS1Comment"># . restore registers</span>
<span id="L49" class="LineNr"> 49 </span> 5f/pop-to-edi
<span id="L50" class="LineNr"> 50 </span> 5e/pop-to-esi
<span id="L51" class="LineNr"> 51 </span> 59/pop-to-ecx
<span id="L52" class="LineNr"> 52 </span> <span class="subxS1Comment"># . epilogue</span>
<span id="L53" class="LineNr"> 53 </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="L54" class="LineNr"> 54 </span> 5d/pop-to-ebp
<span id="L55" class="LineNr"> 55 </span> c3/return
<span id="L56" class="LineNr"> 56 </span>
<span id="L57" class="LineNr"> 57 </span><span class="subxFunction">string-starts-with?</span>: <span class="subxComment"># s: (addr array byte), benchmark: (addr array byte) -> result/eax: boolean</span>
<span id="L58" class="LineNr"> 58 </span> <span class="subxComment"># pseudocode:</span>
<span id="L59" class="LineNr"> 59 </span> <span class="subxComment"># if (s->size < benchmark->size) return false</span>
<span id="L60" class="LineNr"> 60 </span> <span class="subxComment"># currs = s->data</span>
<span id="L61" class="LineNr"> 61 </span> <span class="subxComment"># currb = benchmark->data</span>
<span id="L62" class="LineNr"> 62 </span> <span class="subxComment"># maxb = &benchmark->data[benchmark->size]</span>
<span id="L63" class="LineNr"> 63 </span> <span class="subxComment"># while currb < maxb</span>
<span id="L64" class="LineNr"> 64 </span> <span class="subxComment"># c1 = *currs</span>
<span id="L65" class="LineNr"> 65 </span> <span class="subxComment"># c2 = *currb</span>
<span id="L66" class="LineNr"> 66 </span> <span class="subxComment"># if (c1 != c2) return false</span>
<span id="L67" class="LineNr"> 67 </span> <span class="subxComment"># ++currs, ++currb</span>
<span id="L68" class="LineNr"> 68 </span> <span class="subxComment"># return true</span>
<span id="L69" class="LineNr"> 69 </span> <span class="subxComment">#</span>
<span id="L70" class="LineNr"> 70 </span> <span class="subxComment"># registers:</span>
<span id="L71" class="LineNr"> 71 </span> <span class="subxComment"># currs: esi</span>
<span id="L72" class="LineNr"> 72 </span> <span class="subxComment"># maxs: ecx</span>
<span id="L73" class="LineNr"> 73 </span> <span class="subxComment"># currb: edi</span>
<span id="L74" class="LineNr"> 74 </span> <span class="subxComment"># c1: eax</span>
<span id="L75" class="LineNr"> 75 </span> <span class="subxComment"># c2: ebx</span>
<span id="L76" class="LineNr"> 76 </span> <span class="subxComment">#</span>
<span id="L77" class="LineNr"> 77 </span> <span class="subxS1Comment"># . prologue</span>
<span id="L78" class="LineNr"> 78 </span> 55/push-ebp
<span id="L79" class="LineNr"> 79 </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="L80" class="LineNr"> 80 </span> <span class="subxS1Comment"># . save registers</span>
<span id="L81" class="LineNr"> 81 </span> 51/push-ecx
<span id="L82" class="LineNr"> 82 </span> 52/push-edx
<span id="L83" class="LineNr"> 83 </span> 56/push-esi
<span id="L84" class="LineNr"> 84 </span> 57/push-edi
<span id="L85" class="LineNr"> 85 </span> <span class="subxComment"># esi = s</span>
<span id="L86" class="LineNr"> 86 </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="L87" class="LineNr"> 87 </span> <span class="subxComment"># edi = benchmark</span>
<span id="L88" class="LineNr"> 88 </span> 8b/copy 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 7/r32/edi 0xc/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy *(ebp+12) to edi</span>
<span id="L89" class="LineNr"> 89 </span> <span class="subxComment"># var bsize/ecx: int = benchmark->size</span>
<span id="L90" class="LineNr"> 90 </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="L91" class="LineNr"> 91 </span><span class="Constant">$string-starts-with?:sizes</span>:
<span id="L92" class="LineNr"> 92 </span> <span class="subxComment"># if (s->size < bsize) return false</span>
<span id="L93" class="LineNr"> 93 </span> 39/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 *esi with ecx</span>
<span id="L94" class="LineNr"> 94 </span> 7c/jump-if-< $string-starts-with?:false/disp8
<span id="L95" class="LineNr"> 95 </span> <span class="subxComment"># var currs/esi: (addr byte) = s->data</span>
<span id="L96" class="LineNr"> 96 </span> 81 0/subop/add 3/mod/direct 6/rm32/esi <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 esi</span>
<span id="L97" class="LineNr"> 97 </span> <span class="subxComment"># var currb/edi: (addr byte) = benchmark->data</span>
<span id="L98" class="LineNr"> 98 </span> 81 0/subop/add 3/mod/direct 7/rm32/edi <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 edi</span>
<span id="L99" class="LineNr"> 99 </span> <span class="subxComment"># var maxb/ecx: (addr byte) = &benchmark->data[benchmark->size]</span>
<span id="L100" class="LineNr">100 </span> 01/add 3/mod/direct 1/rm32/ecx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 7/r32/edi <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># add edi to ecx</span>
<span id="L101" class="LineNr">101 </span> <span class="subxComment"># var c1/eax: byte = 0</span>
<span id="L102" class="LineNr">102 </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="L103" class="LineNr">103 </span> <span class="subxComment"># var c2/edx: byte = 0</span>
<span id="L104" class="LineNr">104 </span> 31/xor 3/mod/direct 2/rm32/edx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 2/r32/edx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># clear edx</span>
<span id="L105" class="LineNr">105 </span><span class="Constant">$string-starts-with?:loop</span>:
<span id="L106" class="LineNr">106 </span> <span class="subxComment"># if (currs >= maxs) return true</span>
<span id="L107" class="LineNr">107 </span> 39/compare 3/mod/direct 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"># compare edi with ecx</span>
<span id="L108" class="LineNr">108 </span> 73/jump-if-addr>= $string-starts-with?:true/disp8
<span id="L109" class="LineNr">109 </span> <span class="subxComment"># c1 = *currs</span>
<span id="L110" class="LineNr">110 </span> 8a/copy-byte 0/mod/indirect 6/rm32/esi <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0/r32/AL <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy byte at *esi to AL</span>
<span id="L111" class="LineNr">111 </span> <span class="subxComment"># c2 = *currb</span>
<span id="L112" class="LineNr">112 </span> 8a/copy-byte 0/mod/indirect 7/rm32/edi <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 2/r32/DL <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy byte at *edi to DL</span>
<span id="L113" class="LineNr">113 </span> <span class="subxComment"># if (c1 != c2) return false</span>
<span id="L114" class="LineNr">114 </span> 39/compare 3/mod/direct 0/rm32/eax <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 2/r32/edx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># compare eax and edx</span>
<span id="L115" class="LineNr">115 </span> 75/jump-if-!= $string-starts-with?:false/disp8
<span id="L116" class="LineNr">116 </span> <span class="subxComment"># ++currs</span>
<span id="L117" class="LineNr">117 </span> 46/increment-esi
<span id="L118" class="LineNr">118 </span> <span class="subxComment"># ++currb</span>
<span id="L119" class="LineNr">119 </span> 47/increment-edi
<span id="L120" class="LineNr">120 </span> eb/jump $string-starts-with?:<span class="Constant">loop</span>/disp8
<span id="L121" class="LineNr">121 </span><span class="Constant">$string-starts-with?:true</span>:
<span id="L122" class="LineNr">122 </span> b8/copy-to-eax 1/imm32
<span id="L123" class="LineNr">123 </span> eb/jump $string-starts-with?:end/disp8
<span id="L124" class="LineNr">124 </span><span class="Constant">$string-starts-with?:false</span>:
<span id="L125" class="LineNr">125 </span> b8/copy-to-eax 0/imm32
<span id="L126" class="LineNr">126 </span><span class="Constant">$string-starts-with?:end</span>:
<span id="L127" class="LineNr">127 </span> <span class="subxS1Comment"># . restore registers</span>
<span id="L128" class="LineNr">128 </span> 5f/pop-to-edi
<span id="L129" class="LineNr">129 </span> 5e/pop-to-esi
<span id="L130" class="LineNr">130 </span> 5a/pop-to-edx
<span id="L131" class="LineNr">131 </span> 59/pop-to-ecx
<span id="L132" class="LineNr">132 </span> <span class="subxS1Comment"># . epilogue</span>
<span id="L133" class="LineNr">133 </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="L134" class="LineNr">134 </span> 5d/pop-to-ebp
<span id="L135" class="LineNr">135 </span> c3/return
<span id="L136" class="LineNr">136 </span>
<span id="L137" class="LineNr">137 </span><span class="subxH1Comment"># - tests</span>
<span id="L138" class="LineNr">138 </span>
<span id="L139" class="LineNr">139 </span><span class="subxTest">test-compare-empty-with-empty-string</span>:
<span id="L140" class="LineNr">140 </span> <span class="subxComment"># eax = string-equal?("", "")</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">""</span>/imm32
<span id="L143" class="LineNr">143 </span> 68/push <span class="Constant">""</span>/imm32
<span id="L144" class="LineNr">144 </span> <span class="subxS2Comment"># . . call</span>
<span id="L145" class="LineNr">145 </span> e8/call <a href='105string-equal.subx.html#L15'>string-equal?</a>/disp32
<span id="L146" class="LineNr">146 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L147" class="LineNr">147 </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="L148" class="LineNr">148 </span> <span class="subxComment"># check-ints-equal(eax, 1, msg)</span>
<span id="L149" class="LineNr">149 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L150" class="LineNr">150 </span> 68/push <span class="Constant">"F - test-compare-empty-with-empty-string"</span>/imm32
<span id="L151" class="LineNr">151 </span> 68/push 1/imm32/true
<span id="L152" class="LineNr">152 </span> 50/push-eax
<span id="L153" class="LineNr">153 </span> <span class="subxS2Comment"># . . call</span>
<span id="L154" class="LineNr">154 </span> e8/call <a href='102test.subx.html#L23'>check-ints-equal</a>/disp32
<span id="L155" class="LineNr">155 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L156" class="LineNr">156 </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="L157" class="LineNr">157 </span> c3/return
<span id="L158" class="LineNr">158 </span>
<span id="L159" class="LineNr">159 </span><span class="subxTest">test-compare-empty-with-non-empty-string</span>: <span class="subxComment"># also checks size-mismatch code path</span>
<span id="L160" class="LineNr">160 </span> <span class="subxComment"># eax = string-equal?("", "Abc")</span>
<span id="L161" class="LineNr">161 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L162" class="LineNr">162 </span> 68/push <span class="Constant">"Abc"</span>/imm32
<span id="L163" class="LineNr">163 </span> 68/push <span class="Constant">""</span>/imm32
<span id="L164" class="LineNr">164 </span> <span class="subxS2Comment"># . . call</span>
<span id="L165" class="LineNr">165 </span> e8/call <a href='105string-equal.subx.html#L15'>string-equal?</a>/disp32
<span id="L166" class="LineNr">166 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L167" class="LineNr">167 </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="L168" class="LineNr">168 </span> <span class="subxComment"># check-ints-equal(eax, 0, msg)</span>
<span id="L169" class="LineNr">169 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L170" class="LineNr">170 </span> 68/push <span class="Constant">"F - test-compare-empty-with-non-empty-string"</span>/imm32
<span id="L171" class="LineNr">171 </span> 68/push 0/imm32/false
<span id="L172" class="LineNr">172 </span> 50/push-eax
<span id="L173" class="LineNr">173 </span> <span class="subxS2Comment"># . . call</span>
<span id="L174" class="LineNr">174 </span> e8/call <a href='102test.subx.html#L23'>check-ints-equal</a>/disp32
<span id="L175" class="LineNr">175 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L176" class="LineNr">176 </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="L177" class="LineNr">177 </span> c3/return
<span id="L178" class="LineNr">178 </span>
<span id="L179" class="LineNr">179 </span><span class="subxTest">test-compare-equal-strings</span>:
<span id="L180" class="LineNr">180 </span> <span class="subxComment"># eax = string-equal?("Abc", "Abc")</span>
<span id="L181" class="LineNr">181 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L182" class="LineNr">182 </span> 68/push <span class="Constant">"Abc"</span>/imm32
<span id="L183" class="LineNr">183 </span> 68/push <span class="Constant">"Abc"</span>/imm32
<span id="L184" class="LineNr">184 </span> <span class="subxS2Comment"># . . call</span>
<span id="L185" class="LineNr">185 </span> e8/call <a href='105string-equal.subx.html#L15'>string-equal?</a>/disp32
<span id="L186" class="LineNr">186 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L187" class="LineNr">187 </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="L188" class="LineNr">188 </span> <span class="subxComment"># check-ints-equal(eax, 1, msg)</span>
<span id="L189" class="LineNr">189 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L190" class="LineNr">190 </span> 68/push <span class="Constant">"F - test-compare-equal-strings"</span>/imm32
<span id="L191" class="LineNr">191 </span> 68/push 1/imm32/true
<span id="L192" class="LineNr">192 </span> 50/push-eax
<span id="L193" class="LineNr">193 </span> <span class="subxS2Comment"># . . call</span>
<span id="L194" class="LineNr">194 </span> e8/call <a href='102test.subx.html#L23'>check-ints-equal</a>/disp32
<span id="L195" class="LineNr">195 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L196" class="LineNr">196 </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="L197" class="LineNr">197 </span> c3/return
<span id="L198" class="LineNr">198 </span>
<span id="L199" class="LineNr">199 </span><span class="subxTest">test-compare-inequal-strings-equal-sizes</span>:
<span id="L200" class="LineNr">200 </span> <span class="subxComment"># eax = string-equal?("Abc", "Adc")</span>
<span id="L201" class="LineNr">201 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L202" class="LineNr">202 </span> 68/push <span class="Constant">"Adc"</span>/imm32
<span id="L203" class="LineNr">203 </span> 68/push <span class="Constant">"Abc"</span>/imm32
<span id="L204" class="LineNr">204 </span> <span class="subxS2Comment"># . . call</span>
<span id="L205" class="LineNr">205 </span> e8/call <a href='105string-equal.subx.html#L15'>string-equal?</a>/disp32
<span id="L206" class="LineNr">206 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L207" class="LineNr">207 </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="L208" class="LineNr">208 </span> <span class="subxComment"># check-ints-equal(eax, 0, msg)</span>
<span id="L209" class="LineNr">209 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L210" class="LineNr">210 </span> 68/push <span class="Constant">"F - test-compare-inequal-strings-equal-sizes"</span>/imm32
<span id="L211" class="LineNr">211 </span> 68/push 0/imm32/false
<span id="L212" class="LineNr">212 </span> 50/push-eax
<span id="L213" class="LineNr">213 </span> <span class="subxS2Comment"># . . call</span>
<span id="L214" class="LineNr">214 </span> e8/call <a href='102test.subx.html#L23'>check-ints-equal</a>/disp32
<span id="L215" class="LineNr">215 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L216" class="LineNr">216 </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="L217" class="LineNr">217 </span> c3/return
<span id="L218" class="LineNr">218 </span>
<span id="L219" class="LineNr">219 </span><span class="subxComment"># helper for later tests</span>
<span id="L220" class="LineNr">220 </span><span class="subxFunction">check-strings-equal</span>: <span class="subxComment"># s: (addr array byte), expected: (addr array byte), msg: (addr array byte)</span>
<span id="L221" class="LineNr">221 </span> <span class="subxS1Comment"># . prologue</span>
<span id="L222" class="LineNr">222 </span> 55/push-ebp
<span id="L223" class="LineNr">223 </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="L224" class="LineNr">224 </span> <span class="subxS1Comment"># . save registers</span>
<span id="L225" class="LineNr">225 </span> 50/push-eax
<span id="L226" class="LineNr">226 </span> <span class="subxComment"># var eax: boolean = string-equal?(s, expected)</span>
<span id="L227" class="LineNr">227 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L228" class="LineNr">228 </span> ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0xc/disp8 <span class="Normal"> . </span> <span class="subxComment"># push *(ebp+12)</span>
<span id="L229" class="LineNr">229 </span> ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 8/disp8 <span class="Normal"> . </span> <span class="subxComment"># push *(ebp+8)</span>
<span id="L230" class="LineNr">230 </span> <span class="subxS2Comment"># . . call</span>
<span id="L231" class="LineNr">231 </span> e8/call <a href='105string-equal.subx.html#L15'>string-equal?</a>/disp32
<span id="L232" class="LineNr">232 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L233" class="LineNr">233 </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="L234" class="LineNr">234 </span> <span class="subxComment"># check-ints-equal(eax, 1, msg)</span>
<span id="L235" class="LineNr">235 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L236" class="LineNr">236 </span> ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0x10/disp8 <span class="Normal"> . </span> <span class="subxComment"># push *(ebp+16)</span>
<span id="L237" class="LineNr">237 </span> 68/push 1/imm32
<span id="L238" class="LineNr">238 </span> 50/push-eax
<span id="L239" class="LineNr">239 </span> <span class="subxS2Comment"># . . call</span>
<span id="L240" class="LineNr">240 </span> e8/call <a href='102test.subx.html#L23'>check-ints-equal</a>/disp32
<span id="L241" class="LineNr">241 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L242" class="LineNr">242 </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="L243" class="LineNr">243 </span><span class="Constant">$check-strings-equal:end</span>:
<span id="L244" class="LineNr">244 </span> <span class="subxS1Comment"># . restore registers</span>
<span id="L245" class="LineNr">245 </span> 58/pop-to-eax
<span id="L246" class="LineNr">246 </span> <span class="subxS1Comment"># . epilogue</span>
<span id="L247" class="LineNr">247 </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="L248" class="LineNr">248 </span> 5d/pop-to-ebp
<span id="L249" class="LineNr">249 </span> c3/return
<span id="L250" class="LineNr">250 </span>
<span id="L251" class="LineNr">251 </span><span class="subxComment"># test the helper</span>
<span id="L252" class="LineNr">252 </span><span class="subxTest">test-check-strings-equal</span>:
<span id="L253" class="LineNr">253 </span> <span class="subxComment"># check-strings-equal("Abc", "Abc")</span>
<span id="L254" class="LineNr">254 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L255" class="LineNr">255 </span> 68/push <span class="Constant">"Abc"</span>/imm32
<span id="L256" class="LineNr">256 </span> 68/push <span class="Constant">"Abc"</span>/imm32
<span id="L257" class="LineNr">257 </span> <span class="subxS2Comment"># . . call</span>
<span id="L258" class="LineNr">258 </span> e8/call <a href='105string-equal.subx.html#L220'>check-strings-equal</a>/disp32
<span id="L259" class="LineNr">259 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L260" class="LineNr">260 </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="L261" class="LineNr">261 </span> c3/return
<span id="L262" class="LineNr">262 </span>
<span id="L263" class="LineNr">263 </span><span class="subxS2Comment"># . . vim:nowrap:textwidth=0</span>
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