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<a href='https://github.com/akkartik/mu/blob/master/120allocate.subx'>https://github.com/akkartik/mu/blob/master/120allocate.subx</a>
<pre id='vimCodeElement'>
<span id="L1" class="LineNr"> 1 </span><span class="subxComment"># Helper to dynamically allocate memory on the heap.</span>
<span id="L2" class="LineNr"> 2 </span><span class="subxComment">#</span>
<span id="L3" class="LineNr"> 3 </span><span class="subxComment"># We'd like to be able to write tests for functions that allocate memory,</span>
<span id="L4" class="LineNr"> 4 </span><span class="subxComment"># making assertions on the precise addresses used. To achieve this we'll pass</span>
<span id="L5" class="LineNr"> 5 </span><span class="subxComment"># in an *allocation descriptor* to allocate from.</span>
<span id="L6" class="LineNr"> 6 </span><span class="subxComment">#</span>
<span id="L7" class="LineNr"> 7 </span><span class="subxComment"># Allocation descriptors are also useful outside of tests. Assembly and machine</span>
<span id="L8" class="LineNr"> 8 </span><span class="subxComment"># code are of necessity unsafe languages, and one of the most insidious kinds</span>
<span id="L9" class="LineNr"> 9 </span><span class="subxComment"># of bugs unsafe languages expose us to are dangling pointers to memory that</span>
<span id="L10" class="LineNr"> 10 </span><span class="subxComment"># has been freed and potentially even reused for something totally different.</span>
<span id="L11" class="LineNr"> 11 </span><span class="subxComment"># To reduce the odds of such "use after free" errors, SubX programs tend to not</span>
<span id="L12" class="LineNr"> 12 </span><span class="subxComment"># reclaim and reuse dynamically allocated memory. (Running out of memory is far</span>
<span id="L13" class="LineNr"> 13 </span><span class="subxComment"># easier to debug.) Long-running programs that want to reuse memory are mostly</span>
<span id="L14" class="LineNr"> 14 </span><span class="subxComment"># on their own to be careful. However, they do get one bit of help: they can</span>
<span id="L15" class="LineNr"> 15 </span><span class="subxComment"># carve out chunks of memory and then allocate from them manually using this</span>
<span id="L16" class="LineNr"> 16 </span><span class="subxComment"># very same 'allocate' helper. They just need a new allocation descriptor for</span>
<span id="L17" class="LineNr"> 17 </span><span class="subxComment"># their book-keeping.</span>
<span id="L18" class="LineNr"> 18 </span>
<span id="L19" class="LineNr"> 19 </span>== data
<span id="L20" class="LineNr"> 20 </span>
<span id="L21" class="LineNr"> 21 </span><span class="subxComment"># Allocations are returned in a handle, which consists of an alloc-id and a payload.</span>
<span id="L22" class="LineNr"> 22 </span><span class="subxComment"># The alloc-id helps detect use-after-free errors.</span>
<span id="L23" class="LineNr"> 23 </span><span class="SpecialChar">Handle-size</span>: <span class="subxComment"># (addr int)</span>
<span id="L24" class="LineNr"> 24 </span> 8/imm32
<span id="L25" class="LineNr"> 25 </span>
<span id="L26" class="LineNr"> 26 </span><span class="subxComment"># A default allocation descriptor for programs to use.</span>
<span id="L27" class="LineNr"> 27 </span><span class="SpecialChar">Heap</span>: <span class="subxComment"># allocation-descriptor</span>
<span id="L28" class="LineNr"> 28 </span> <span class="subxComment"># curr</span>
<span id="L29" class="LineNr"> 29 </span> 0/imm32
<span id="L30" class="LineNr"> 30 </span> <span class="subxComment"># limit</span>
<span id="L31" class="LineNr"> 31 </span> 0/imm32
<span id="L32" class="LineNr"> 32 </span>
<span id="L33" class="LineNr"> 33 </span><span class="subxComment"># a reasonable default</span>
<span id="L34" class="LineNr"> 34 </span><span class="SpecialChar">Heap-size</span>: <span class="subxComment"># int</span>
<span id="L35" class="LineNr"> 35 </span> 0x800000/imm32/8MB
<span id="L36" class="LineNr"> 36 </span>
<span id="L37" class="LineNr"> 37 </span><span class="SpecialChar">Next-alloc-id</span>: <span class="subxComment"># int</span>
<span id="L38" class="LineNr"> 38 </span> 0x100/imm32 <span class="subxComment"># save a few alloc ids for fake handles</span>
<span id="L39" class="LineNr"> 39 </span>
<span id="L40" class="LineNr"> 40 </span>== code
<span id="L41" class="LineNr"> 41 </span><span class="subxComment"># instruction effective address register displacement immediate</span>
<span id="L42" class="LineNr"> 42 </span><span class="subxS1Comment"># . op subop mod rm32 base index scale r32</span>
<span id="L43" class="LineNr"> 43 </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="L44" class="LineNr"> 44 </span>
<span id="L45" class="LineNr"> 45 </span><span class="subxComment"># Let's start initializing the default allocation descriptor.</span>
<span id="L46" class="LineNr"> 46 </span>
<span id="L47" class="LineNr"> 47 </span><span class="SpecialChar">Entry</span>:
<span id="L48" class="LineNr"> 48 </span> <span class="subxComment"># initialize heap</span>
<span id="L49" class="LineNr"> 49 </span> <span class="subxS1Comment"># . Heap = new-segment(Heap-size)</span>
<span id="L50" class="LineNr"> 50 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L51" class="LineNr"> 51 </span> 68/push <span class="SpecialChar"><a href='120allocate.subx.html#L27'>Heap</a></span>/imm32
<span id="L52" class="LineNr"> 52 </span> ff 6/subop/push 0/mod/indirect 5/rm32/.disp32 <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="SpecialChar"><a href='120allocate.subx.html#L34'>Heap-size</a></span>/disp32 <span class="subxComment"># push *Heap-size</span>
<span id="L53" class="LineNr"> 53 </span> <span class="subxS2Comment"># . . call</span>
<span id="L54" class="LineNr"> 54 </span> e8/call <a href='104new-segment.subx.html#L40'>new-segment</a>/disp32
<span id="L55" class="LineNr"> 55 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L56" class="LineNr"> 56 </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="L57" class="LineNr"> 57 </span>
<span id="L58" class="LineNr"> 58 </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="L59" class="LineNr"> 59 </span><span class="Constant">$array-equal-main:end</span>:
<span id="L60" class="LineNr"> 60 </span> <span class="subxComment"># syscall(exit, Num-test-failures)</span>
<span id="L61" class="LineNr"> 61 </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="L62" class="LineNr"> 62 </span> e8/call syscall_exit/disp32
<span id="L63" class="LineNr"> 63 </span>
<span id="L64" class="LineNr"> 64 </span><span class="subxComment"># Allocate and clear 'n' bytes of memory from an allocation-descriptor 'ad'.</span>
<span id="L65" class="LineNr"> 65 </span><span class="subxComment"># Abort if there isn't enough memory in 'ad'.</span>
<span id="L66" class="LineNr"> 66 </span><span class="subxFunction">allocate</span>: <span class="subxComment"># ad: (addr allocation-descriptor), n: int, out: (addr handle _)</span>
<span id="L67" class="LineNr"> 67 </span> <span class="subxS1Comment"># . prologue</span>
<span id="L68" class="LineNr"> 68 </span> 55/push-ebp
<span id="L69" class="LineNr"> 69 </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="L70" class="LineNr"> 70 </span> <span class="subxS1Comment"># . save registers</span>
<span id="L71" class="LineNr"> 71 </span> 50/push-eax
<span id="L72" class="LineNr"> 72 </span> <span class="subxComment"># allocate-raw(ad, n, out)</span>
<span id="L73" class="LineNr"> 73 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L74" class="LineNr"> 74 </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="L75" class="LineNr"> 75 </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="L76" class="LineNr"> 76 </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="L77" class="LineNr"> 77 </span> <span class="subxS2Comment"># . . call</span>
<span id="L78" class="LineNr"> 78 </span> e8/call <a href='120allocate.subx.html#L103'>allocate-raw</a>/disp32
<span id="L79" class="LineNr"> 79 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L80" class="LineNr"> 80 </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="L81" class="LineNr"> 81 </span> <span class="subxComment"># eax = out->payload + 4</span>
<span id="L82" class="LineNr"> 82 </span> 8b/copy 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0/r32/eax 0x10/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy *(ebp+16) to eax</span>
<span id="L83" class="LineNr"> 83 </span> 8b/copy 1/mod/*+disp8 0/rm32/eax <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 *(eax+4) to eax</span>
<span id="L84" class="LineNr"> 84 </span> 05/add-to-eax 4/imm32
<span id="L85" class="LineNr"> 85 </span> <span class="subxComment"># zero-out(eax, n)</span>
<span id="L86" class="LineNr"> 86 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L87" class="LineNr"> 87 </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="L88" class="LineNr"> 88 </span> 50/push-eax
<span id="L89" class="LineNr"> 89 </span> <span class="subxS2Comment"># . . call</span>
<span id="L90" class="LineNr"> 90 </span> e8/call <a href='120allocate.subx.html#L877'>zero-out</a>/disp32
<span id="L91" class="LineNr"> 91 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L92" class="LineNr"> 92 </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="L93" class="LineNr"> 93 </span><span class="Constant">$allocate:end</span>:
<span id="L94" class="LineNr"> 94 </span> <span class="subxS1Comment"># . restore registers</span>
<span id="L95" class="LineNr"> 95 </span> 58/pop-to-eax
<span id="L96" class="LineNr"> 96 </span> <span class="subxS1Comment"># . epilogue</span>
<span id="L97" class="LineNr"> 97 </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="L98" class="LineNr"> 98 </span> 5d/pop-to-ebp
<span id="L99" class="LineNr"> 99 </span> c3/return
<span id="L100" class="LineNr">100 </span>
<span id="L101" class="LineNr">101 </span><span class="subxComment"># Claim the next 'n' bytes of memory starting at ad->curr and update ad->curr.</span>
<span id="L102" class="LineNr">102 </span><span class="subxComment"># Abort if there isn't enough memory in 'ad'.</span>
<span id="L103" class="LineNr">103 </span><span class="subxFunction">allocate-raw</span>: <span class="subxComment"># ad: (addr allocation-descriptor), n: int, out: (addr handle _)</span>
<span id="L104" class="LineNr">104 </span> <span class="subxS1Comment"># . prologue</span>
<span id="L105" class="LineNr">105 </span> 55/push-ebp
<span id="L106" class="LineNr">106 </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="L107" class="LineNr">107 </span> <span class="subxS1Comment"># . save registers</span>
<span id="L108" class="LineNr">108 </span> 50/push-eax
<span id="L109" class="LineNr">109 </span> 51/push-ecx
<span id="L110" class="LineNr">110 </span> 52/push-edx
<span id="L111" class="LineNr">111 </span> 53/push-ebx
<span id="L112" class="LineNr">112 </span> 56/push-esi
<span id="L113" class="LineNr">113 </span> 57/push-edi
<span id="L114" class="LineNr">114 </span> <span class="subxComment"># ecx = ad</span>
<span id="L115" class="LineNr">115 </span> 8b/copy 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 1/r32/ecx 8/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy *(ebp+8) to ecx</span>
<span id="L116" class="LineNr">116 </span> <span class="subxComment"># edx = out</span>
<span id="L117" class="LineNr">117 </span> 8b/copy 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 2/r32/edx 0x10/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy *(ebp+16) to edx</span>
<span id="L118" class="LineNr">118 </span> <span class="subxComment"># ebx = n</span>
<span id="L119" class="LineNr">119 </span> 8b/copy 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 3/r32/ebx 0xc/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy *(ebp+12) to ebx</span>
<span id="L120" class="LineNr">120 </span> <span class="subxComment"># out->alloc-id = Next-alloc-id</span>
<span id="L121" class="LineNr">121 </span> 8b/copy 0/mod/indirect 5/rm32/.disp32 <span class="Normal"> . </span> <span class="Normal"> . </span> 0/r32/eax <span class="SpecialChar"><a href='120allocate.subx.html#L37'>Next-alloc-id</a></span>/disp32 <span class="subxComment"># copy *Next-alloc-id to eax</span>
<span id="L122" class="LineNr">122 </span> 89/copy 0/mod/indirect 2/rm32/edx <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"># copy eax to *edx</span>
<span id="L123" class="LineNr">123 </span> <span class="subxComment"># out->payload = ad->curr</span>
<span id="L124" class="LineNr">124 </span> 8b/copy 0/mod/indirect 1/rm32/ecx <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"># copy *ecx to eax</span>
<span id="L125" class="LineNr">125 </span><span class="Constant">$allocate-raw:save-payload-in-eax</span>:
<span id="L126" class="LineNr">126 </span> 89/copy 1/mod/*+disp8 2/rm32/edx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0/r32/eax 4/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy eax to *(edx+4)</span>
<span id="L127" class="LineNr">127 </span> <span class="subxComment"># *out->payload = Next-alloc-id</span>
<span id="L128" class="LineNr">128 </span> 8b/copy 1/mod/*+disp8 2/rm32/edx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 7/r32/edi 4/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy *(edx+4) to edi</span>
<span id="L129" class="LineNr">129 </span> 8b/copy 0/mod/indirect 5/rm32/.disp32 <span class="Normal"> . </span> <span class="Normal"> . </span> 6/r32/esi <span class="SpecialChar"><a href='120allocate.subx.html#L37'>Next-alloc-id</a></span>/disp32 <span class="subxComment"># copy *Next-alloc-id to esi</span>
<span id="L130" class="LineNr">130 </span> 89/copy 0/mod/indirect 7/rm32/edi <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 6/r32/esi <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy esi to *edi</span>
<span id="L131" class="LineNr">131 </span><span class="Constant">$allocate-raw:increment-next-alloc-id</span>:
<span id="L132" class="LineNr">132 </span> <span class="subxComment"># increment *Next-alloc-id</span>
<span id="L133" class="LineNr">133 </span> ff 0/subop/increment 0/mod/indirect 5/rm32/.disp32 <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="SpecialChar"><a href='120allocate.subx.html#L37'>Next-alloc-id</a></span>/disp32 <span class="subxComment"># increment *Next-alloc-id</span>
<span id="L134" class="LineNr">134 </span> <span class="subxComment"># check if there's enough space</span>
<span id="L135" class="LineNr">135 </span> <span class="subxComment"># TODO: move this check up before any state updates when we support error recovery</span>
<span id="L136" class="LineNr">136 </span> 8d/copy-address 1/mod/*+disp8 4/rm32/sib 0/base/eax 3/index/ebx <span class="Normal"> . </span> 0/r32/eax 4/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy eax+ebx+4 to eax</span>
<span id="L137" class="LineNr">137 </span> 3b/compare 1/mod/*+disp8 1/rm32/ecx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0/r32/eax 4/disp8 <span class="Normal"> . </span> <span class="subxComment"># compare eax with *(ecx+4)</span>
<span id="L138" class="LineNr">138 </span> 73/jump-if->=-signed $allocate-raw:abort/disp8
<span id="L139" class="LineNr">139 </span><span class="Constant">$allocate-raw:commit</span>:
<span id="L140" class="LineNr">140 </span> <span class="subxComment"># ad->curr += n+4</span>
<span id="L141" class="LineNr">141 </span> 89/copy 0/mod/indirect 1/rm32/ecx <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"># copy eax to *ecx</span>
<span id="L142" class="LineNr">142 </span><span class="Constant">$allocate-raw:end</span>:
<span id="L143" class="LineNr">143 </span> <span class="subxS1Comment"># . restore registers</span>
<span id="L144" class="LineNr">144 </span> 5f/pop-to-edi
<span id="L145" class="LineNr">145 </span> 5e/pop-to-esi
<span id="L146" class="LineNr">146 </span> 5b/pop-to-ebx
<span id="L147" class="LineNr">147 </span> 5a/pop-to-edx
<span id="L148" class="LineNr">148 </span> 59/pop-to-ecx
<span id="L149" class="LineNr">149 </span> 58/pop-to-eax
<span id="L150" class="LineNr">150 </span> <span class="subxS1Comment"># . epilogue</span>
<span id="L151" class="LineNr">151 </span> 89/copy 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 5/r32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy ebp to esp</span>
<span id="L152" class="LineNr">152 </span> 5d/pop-to-ebp
<span id="L153" class="LineNr">153 </span> c3/return
<span id="L154" class="LineNr">154 </span>
<span id="L155" class="LineNr">155 </span><span class="Constant">$allocate-raw:abort</span>:
<span id="L156" class="LineNr">156 </span> <span class="subxS1Comment"># . _write(2/stderr, error)</span>
<span id="L157" class="LineNr">157 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L158" class="LineNr">158 </span> 68/push <span class="Constant">"allocate: failed\n"</span>/imm32
<span id="L159" class="LineNr">159 </span> 68/push 2/imm32/stderr
<span id="L160" class="LineNr">160 </span> <span class="subxS2Comment"># . . call</span>
<span id="L161" class="LineNr">161 </span> e8/call <a href='101_write.subx.html#L12'>_write</a>/disp32
<span id="L162" class="LineNr">162 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L163" class="LineNr">163 </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="L164" class="LineNr">164 </span> <span class="subxS1Comment"># . syscall(exit, 1)</span>
<span id="L165" class="LineNr">165 </span> bb/copy-to-ebx 1/imm32
<span id="L166" class="LineNr">166 </span> e8/call syscall_exit/disp32
<span id="L167" class="LineNr">167 </span> <span class="subxComment"># never gets here</span>
<span id="L168" class="LineNr">168 </span>
<span id="L169" class="LineNr">169 </span><span class="subxTest">test-allocate-raw-success</span>:
<span id="L170" class="LineNr">170 </span> <span class="subxS1Comment"># . prologue</span>
<span id="L171" class="LineNr">171 </span> 55/push-ebp
<span id="L172" class="LineNr">172 </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="L173" class="LineNr">173 </span> <span class="subxComment"># var ad/ecx: allocation-descriptor</span>
<span id="L174" class="LineNr">174 </span> 68/push 0/imm32/limit
<span id="L175" class="LineNr">175 </span> 68/push 0/imm32/curr
<span id="L176" class="LineNr">176 </span> 89/copy 3/mod/direct 1/rm32/ecx <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 ecx</span>
<span id="L177" class="LineNr">177 </span> <span class="subxComment"># ad = new-segment(512)</span>
<span id="L178" class="LineNr">178 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L179" class="LineNr">179 </span> 51/push-ecx
<span id="L180" class="LineNr">180 </span> 68/push 0x200/imm32
<span id="L181" class="LineNr">181 </span> <span class="subxS2Comment"># . . call</span>
<span id="L182" class="LineNr">182 </span> e8/call <a href='104new-segment.subx.html#L40'>new-segment</a>/disp32
<span id="L183" class="LineNr">183 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L184" class="LineNr">184 </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="L185" class="LineNr">185 </span> <span class="subxComment"># var expected-payload/ebx = ad->curr</span>
<span id="L186" class="LineNr">186 </span> 8b/copy 0/mod/indirect 1/rm32/ecx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 3/r32/ebx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy *ecx to ebx</span>
<span id="L187" class="LineNr">187 </span> <span class="subxComment"># var h/edx: handle = {0, 0}</span>
<span id="L188" class="LineNr">188 </span> 68/push 0/imm32
<span id="L189" class="LineNr">189 </span> 68/push 0/imm32
<span id="L190" class="LineNr">190 </span> 89/copy 3/mod/direct 2/rm32/edx <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 edx</span>
<span id="L191" class="LineNr">191 </span> <span class="subxComment"># *Next-alloc-id = 0x34</span>
<span id="L192" class="LineNr">192 </span> c7 0/subop/copy 0/mod/indirect 5/rm32/.disp32 <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="SpecialChar"><a href='120allocate.subx.html#L37'>Next-alloc-id</a></span>/disp32 0x34/imm32 <span class="subxComment"># copy to *Next-alloc-id</span>
<span id="L193" class="LineNr">193 </span> <span class="subxComment"># allocate-raw(ad, 3, h)</span>
<span id="L194" class="LineNr">194 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L195" class="LineNr">195 </span> 52/push-edx
<span id="L196" class="LineNr">196 </span> 68/push 3/imm32
<span id="L197" class="LineNr">197 </span> 51/push-ecx
<span id="L198" class="LineNr">198 </span> <span class="subxS2Comment"># . . call</span>
<span id="L199" class="LineNr">199 </span> e8/call <a href='120allocate.subx.html#L103'>allocate-raw</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="subxComment"># check-ints-equal(h->alloc-id, 0x34, msg)</span>
<span id="L203" class="LineNr">203 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L204" class="LineNr">204 </span> 68/push <span class="Constant">"F - <a href='120allocate.subx.html#L169'>test-allocate-raw-success</a>: sets alloc-id in handle"</span>/imm32
<span id="L205" class="LineNr">205 </span> 68/push 0x34/imm32
<span id="L206" class="LineNr">206 </span> ff 6/subop/push 0/mod/indirect 2/rm32/edx <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 *edx</span>
<span id="L207" class="LineNr">207 </span> <span class="subxS2Comment"># . . call</span>
<span id="L208" class="LineNr">208 </span> e8/call <a href='102test.subx.html#L23'>check-ints-equal</a>/disp32
<span id="L209" class="LineNr">209 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L210" class="LineNr">210 </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="L211" class="LineNr">211 </span> <span class="subxComment"># check-ints-equal(h->payload, expected-payload, msg)</span>
<span id="L212" class="LineNr">212 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L213" class="LineNr">213 </span> 68/push <span class="Constant">"F - <a href='120allocate.subx.html#L169'>test-allocate-raw-success</a>: sets payload in handle"</span>/imm32
<span id="L214" class="LineNr">214 </span> 53/push-ebx
<span id="L215" class="LineNr">215 </span> ff 6/subop/push 1/mod/*+disp8 2/rm32/edx <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"># push *(edx+4)</span>
<span id="L216" class="LineNr">216 </span> <span class="subxS2Comment"># . . call</span>
<span id="L217" class="LineNr">217 </span> e8/call <a href='102test.subx.html#L23'>check-ints-equal</a>/disp32
<span id="L218" class="LineNr">218 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L219" class="LineNr">219 </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="L220" class="LineNr">220 </span> <span class="subxComment"># check-ints-equal(h->payload->alloc-id, 0x34, msg)</span>
<span id="L221" class="LineNr">221 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L222" class="LineNr">222 </span> 68/push <span class="Constant">"F - <a href='120allocate.subx.html#L169'>test-allocate-raw-success</a>: sets alloc-id in payload"</span>/imm32
<span id="L223" class="LineNr">223 </span> 68/push 0x34/imm32
<span id="L224" class="LineNr">224 </span> ff 6/subop/push 0/mod/indirect 3/rm32/ebx <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 *ebx</span>
<span id="L225" class="LineNr">225 </span> <span class="subxS2Comment"># . . call</span>
<span id="L226" class="LineNr">226 </span> e8/call <a href='102test.subx.html#L23'>check-ints-equal</a>/disp32
<span id="L227" class="LineNr">227 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L228" class="LineNr">228 </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="L229" class="LineNr">229 </span> <span class="subxComment"># check-ints-equal(*Next-alloc-id, 0x35, msg)</span>
<span id="L230" class="LineNr">230 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L231" class="LineNr">231 </span> 68/push <span class="Constant">"F - <a href='120allocate.subx.html#L169'>test-allocate-raw-success</a>: increments Next-alloc-id"</span>/imm32
<span id="L232" class="LineNr">232 </span> 68/push 0x35/imm32
<span id="L233" class="LineNr">233 </span> ff 6/subop/push 0/mod/indirect 5/rm32/.disp32 <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="SpecialChar"><a href='120allocate.subx.html#L37'>Next-alloc-id</a></span>/disp32 <span class="subxComment"># push *Next-alloc-id</span>
<span id="L234" class="LineNr">234 </span> <span class="subxS2Comment"># . . call</span>
<span id="L235" class="LineNr">235 </span> e8/call <a href='102test.subx.html#L23'>check-ints-equal</a>/disp32
<span id="L236" class="LineNr">236 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L237" class="LineNr">237 </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="L238" class="LineNr">238 </span> <span class="subxComment"># check-ints-equal(ad->curr - expected-payload, 3 + 4 for alloc-id, msg)</span>
<span id="L239" class="LineNr">239 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L240" class="LineNr">240 </span> 68/push <span class="Constant">"F - <a href='120allocate.subx.html#L169'>test-allocate-raw-success</a>: updates allocation descriptor"</span>/imm32
<span id="L241" class="LineNr">241 </span> 68/push 7/imm32
<span id="L242" class="LineNr">242 </span> 8b/copy 0/mod/indirect 1/rm32/ecx <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"># copy *ecx to eax</span>
<span id="L243" class="LineNr">243 </span> 29/subtract 3/mod/direct 0/rm32/eax <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 3/r32/ebx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># subtract ebx from eax</span>
<span id="L244" class="LineNr">244 </span> 50/push-eax
<span id="L245" class="LineNr">245 </span> <span class="subxS2Comment"># . . call</span>
<span id="L246" class="LineNr">246 </span> e8/call <a href='102test.subx.html#L23'>check-ints-equal</a>/disp32
<span id="L247" class="LineNr">247 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L248" class="LineNr">248 </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="L249" class="LineNr">249 </span> <span class="subxComment"># clean up</span>
<span id="L250" class="LineNr">250 </span> c7 0/subop/copy 0/mod/indirect 5/rm32/.disp32 <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="SpecialChar"><a href='120allocate.subx.html#L37'>Next-alloc-id</a></span>/disp32 0x100/imm32 <span class="subxComment"># copy to *Next-alloc-id</span>
<span id="L251" class="LineNr">251 </span> <span class="subxS1Comment"># . epilogue</span>
<span id="L252" class="LineNr">252 </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="L253" class="LineNr">253 </span> 5d/pop-to-ebp
<span id="L254" class="LineNr">254 </span> c3/return
<span id="L255" class="LineNr">255 </span>
<span id="L256" class="LineNr">256 </span><span class="subxFunction">lookup</span>: <span class="subxComment"># h: (handle _T) -> result/eax: (addr _T)</span>
<span id="L257" class="LineNr">257 </span> <span class="subxS1Comment"># . prologue</span>
<span id="L258" class="LineNr">258 </span> 55/push-ebp
<span id="L259" class="LineNr">259 </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="L260" class="LineNr">260 </span> <span class="subxS1Comment"># . save registers</span>
<span id="L261" class="LineNr">261 </span> 51/push-ecx
<span id="L262" class="LineNr">262 </span> <span class="subxComment"># eax = 0</span>
<span id="L263" class="LineNr">263 </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="L264" class="LineNr">264 </span> <span class="subxComment"># ecx = handle->alloc_id</span>
<span id="L265" class="LineNr">265 </span> 8b/copy 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 1/r32/ecx 8/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy *(ebp+8) to ecx</span>
<span id="L266" class="LineNr">266 </span> <span class="subxComment"># if (ecx == 0) return 0</span>
<span id="L267" class="LineNr">267 </span> 81 7/subop/compare 3/mod/direct 1/rm32/ecx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0/imm32 <span class="subxComment"># compare ecx</span>
<span id="L268" class="LineNr">268 </span> 74/jump-if-= $lookup:end/disp8
<span id="L269" class="LineNr">269 </span> <span class="subxComment"># eax = handle->address (payload)</span>
<span id="L270" class="LineNr">270 </span> 8b/copy 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0/r32/eax 0xc/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy *(ebp+12) to eax</span>
<span id="L271" class="LineNr">271 </span> <span class="subxComment"># if (ecx != *eax) abort</span>
<span id="L272" class="LineNr">272 </span> 39/compare 0/mod/indirect 0/rm32/eax <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 *eax and ecx</span>
<span id="L273" class="LineNr">273 </span> 75/jump-if-!= $lookup:abort/disp8
<span id="L274" class="LineNr">274 </span> <span class="subxComment"># add 4 to eax</span>
<span id="L275" class="LineNr">275 </span> 05/add-to-eax 4/imm32
<span id="L276" class="LineNr">276 </span><span class="Constant">$lookup:end</span>:
<span id="L277" class="LineNr">277 </span> <span class="subxS1Comment"># . restore registers</span>
<span id="L278" class="LineNr">278 </span> 59/pop-to-ecx
<span id="L279" class="LineNr">279 </span> <span class="subxS1Comment"># . epilogue</span>
<span id="L280" class="LineNr">280 </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="L281" class="LineNr">281 </span> 5d/pop-to-ebp
<span id="L282" class="LineNr">282 </span> c3/return
<span id="L283" class="LineNr">283 </span>
<span id="L284" class="LineNr">284 </span><span class="Constant">$lookup:abort</span>:
<span id="L285" class="LineNr">285 </span> <span class="subxS1Comment"># . _write(2/stderr, msg)</span>
<span id="L286" class="LineNr">286 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L287" class="LineNr">287 </span> 68/push <span class="Constant">"lookup failed\n"</span>/imm32
<span id="L288" class="LineNr">288 </span> 68/push 2/imm32/stderr
<span id="L289" class="LineNr">289 </span> <span class="subxS2Comment"># . . call</span>
<span id="L290" class="LineNr">290 </span> e8/call <a href='101_write.subx.html#L12'>_write</a>/disp32
<span id="L291" class="LineNr">291 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L292" class="LineNr">292 </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="L293" class="LineNr">293 </span> <span class="subxS1Comment"># . syscall(exit, 1)</span>
<span id="L294" class="LineNr">294 </span> bb/copy-to-ebx 1/imm32/exit-status
<span id="L295" class="LineNr">295 </span> e8/call syscall_exit/disp32
<span id="L296" class="LineNr">296 </span>
<span id="L297" class="LineNr">297 </span><span class="subxTest">test-lookup-success</span>:
<span id="L298" class="LineNr">298 </span> <span class="subxS1Comment"># . prologue</span>
<span id="L299" class="LineNr">299 </span> 55/push-ebp
<span id="L300" class="LineNr">300 </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="L301" class="LineNr">301 </span> <span class="subxComment"># var ad/ebx: allocation-descriptor</span>
<span id="L302" class="LineNr">302 </span> 68/push 0/imm32/limit
<span id="L303" class="LineNr">303 </span> 68/push 0/imm32/curr
<span id="L304" class="LineNr">304 </span> 89/copy 3/mod/direct 3/rm32/ebx <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 ebx</span>
<span id="L305" class="LineNr">305 </span> <span class="subxComment"># ad = new-segment(512)</span>
<span id="L306" class="LineNr">306 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L307" class="LineNr">307 </span> 53/push-ebx
<span id="L308" class="LineNr">308 </span> 68/push 0x200/imm32
<span id="L309" class="LineNr">309 </span> <span class="subxS2Comment"># . . call</span>
<span id="L310" class="LineNr">310 </span> e8/call <a href='104new-segment.subx.html#L40'>new-segment</a>/disp32
<span id="L311" class="LineNr">311 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L312" class="LineNr">312 </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="L313" class="LineNr">313 </span> <span class="subxComment"># var handle/ecx: handle</span>
<span id="L314" class="LineNr">314 </span> 68/push 0/imm32/address
<span id="L315" class="LineNr">315 </span> 68/push 0/imm32/alloc-id
<span id="L316" class="LineNr">316 </span> 89/copy 3/mod/direct 1/rm32/ecx <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 ecx</span>
<span id="L317" class="LineNr">317 </span> <span class="subxComment"># var old-top/edx = ad->curr</span>
<span id="L318" class="LineNr">318 </span> 8b/copy 0/mod/indirect 3/rm32/ebx <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"># copy *ebx to edx</span>
<span id="L319" class="LineNr">319 </span> <span class="subxComment"># allocate-raw(ad, 2, handle)</span>
<span id="L320" class="LineNr">320 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L321" class="LineNr">321 </span> 51/push-ecx
<span id="L322" class="LineNr">322 </span> 68/push 2/imm32/size
<span id="L323" class="LineNr">323 </span> 53/push-ebx
<span id="L324" class="LineNr">324 </span> <span class="subxS2Comment"># . . call</span>
<span id="L325" class="LineNr">325 </span> e8/call <a href='120allocate.subx.html#L103'>allocate-raw</a>/disp32
<span id="L326" class="LineNr">326 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L327" class="LineNr">327 </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="L328" class="LineNr">328 </span> <span class="subxComment"># eax = lookup(handle)</span>
<span id="L329" class="LineNr">329 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L330" class="LineNr">330 </span> ff 6/subop/push 1/mod/*+disp8 1/rm32/ecx <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"># push *(ecx+4)</span>
<span id="L331" class="LineNr">331 </span> ff 6/subop/push 0/mod/indirect 1/rm32/ecx <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 *ecx</span>
<span id="L332" class="LineNr">332 </span> <span class="subxS2Comment"># . . call</span>
<span id="L333" class="LineNr">333 </span> e8/call <a href='120allocate.subx.html#L256'>lookup</a>/disp32
<span id="L334" class="LineNr">334 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L335" class="LineNr">335 </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="L336" class="LineNr">336 </span> <span class="subxComment"># eax contains old top of heap, except skipping the alloc-id in the payload</span>
<span id="L337" class="LineNr">337 </span> <span class="subxS1Comment"># . check-ints-equal(eax, old-top+4, msg)</span>
<span id="L338" class="LineNr">338 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L339" class="LineNr">339 </span> 68/push <span class="Constant">"F - test-lookup-success"</span>/imm32
<span id="L340" class="LineNr">340 </span> 81 0/subop/add 3/mod/direct 2/rm32/edx <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 edx</span>
<span id="L341" class="LineNr">341 </span> 52/push-edx
<span id="L342" class="LineNr">342 </span> 50/push-eax
<span id="L343" class="LineNr">343 </span> <span class="subxS2Comment"># . . call</span>
<span id="L344" class="LineNr">344 </span> e8/call <a href='102test.subx.html#L23'>check-ints-equal</a>/disp32
<span id="L345" class="LineNr">345 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L346" class="LineNr">346 </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="L347" class="LineNr">347 </span> <span class="subxComment"># clean up</span>
<span id="L348" class="LineNr">348 </span> c7 0/subop/copy 0/mod/indirect 5/rm32/.disp32 <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="SpecialChar"><a href='120allocate.subx.html#L37'>Next-alloc-id</a></span>/disp32 0x100/imm32 <span class="subxComment"># copy to *Next-alloc-id</span>
<span id="L349" class="LineNr">349 </span> <span class="subxS1Comment"># . epilogue</span>
<span id="L350" class="LineNr">350 </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="L351" class="LineNr">351 </span> 5d/pop-to-ebp
<span id="L352" class="LineNr">352 </span> c3/return
<span id="L353" class="LineNr">353 </span>
<span id="L354" class="LineNr">354 </span><span class="subxTest">test-lookup-null-returns-null</span>:
<span id="L355" class="LineNr">355 </span> <span class="subxS1Comment"># . prologue</span>
<span id="L356" class="LineNr">356 </span> 55/push-ebp
<span id="L357" class="LineNr">357 </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="L358" class="LineNr">358 </span> <span class="subxComment"># var handle/ecx: handle</span>
<span id="L359" class="LineNr">359 </span> 68/push 0/imm32/address
<span id="L360" class="LineNr">360 </span> 68/push 0/imm32/alloc-id
<span id="L361" class="LineNr">361 </span> 89/copy 3/mod/direct 1/rm32/ecx <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 ecx</span>
<span id="L362" class="LineNr">362 </span> <span class="subxComment"># eax = lookup(handle)</span>
<span id="L363" class="LineNr">363 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L364" class="LineNr">364 </span> ff 6/subop/push 1/mod/*+disp8 1/rm32/ecx <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"># push *(ecx+4)</span>
<span id="L365" class="LineNr">365 </span> ff 6/subop/push 0/mod/indirect 1/rm32/ecx <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 *ecx</span>
<span id="L366" class="LineNr">366 </span> <span class="subxS2Comment"># . . call</span>
<span id="L367" class="LineNr">367 </span> e8/call <a href='120allocate.subx.html#L256'>lookup</a>/disp32
<span id="L368" class="LineNr">368 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L369" class="LineNr">369 </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="L370" class="LineNr">370 </span> <span class="subxComment"># check-ints-equal(eax, 0, msg)</span>
<span id="L371" class="LineNr">371 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L372" class="LineNr">372 </span> 68/push <span class="Constant">"F - test-lookup-null-returns-null"</span>/imm32
<span id="L373" class="LineNr">373 </span> 68/push 0/imm32
<span id="L374" class="LineNr">374 </span> 50/push-eax
<span id="L375" class="LineNr">375 </span> <span class="subxS2Comment"># . . call</span>
<span id="L376" class="LineNr">376 </span> e8/call <a href='102test.subx.html#L23'>check-ints-equal</a>/disp32
<span id="L377" class="LineNr">377 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L378" class="LineNr">378 </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="L379" class="LineNr">379 </span> <span class="subxS1Comment"># . epilogue</span>
<span id="L380" class="LineNr">380 </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="L381" class="LineNr">381 </span> 5d/pop-to-ebp
<span id="L382" class="LineNr">382 </span> c3/return
<span id="L383" class="LineNr">383 </span>
<span id="L384" class="LineNr">384 </span><span class="subxMinorFunction">_pending-test-lookup-failure</span>:
<span id="L385" class="LineNr">385 </span> <span class="subxS1Comment"># . prologue</span>
<span id="L386" class="LineNr">386 </span> 55/push-ebp
<span id="L387" class="LineNr">387 </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="L388" class="LineNr">388 </span> <span class="subxComment"># var heap/esi: allocation-descriptor</span>
<span id="L389" class="LineNr">389 </span> 68/push 0/imm32/limit
<span id="L390" class="LineNr">390 </span> 68/push 0/imm32/curr
<span id="L391" class="LineNr">391 </span> 89/copy 3/mod/direct 6/rm32/esi <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 esi</span>
<span id="L392" class="LineNr">392 </span> <span class="subxComment"># heap = new-segment(512)</span>
<span id="L393" class="LineNr">393 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L394" class="LineNr">394 </span> 56/push-esi
<span id="L395" class="LineNr">395 </span> 68/push 0x200/imm32
<span id="L396" class="LineNr">396 </span> <span class="subxS2Comment"># . . call</span>
<span id="L397" class="LineNr">397 </span> e8/call <a href='104new-segment.subx.html#L40'>new-segment</a>/disp32
<span id="L398" class="LineNr">398 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L399" class="LineNr">399 </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="L400" class="LineNr">400 </span> <span class="subxComment"># var h1/ecx: handle</span>
<span id="L401" class="LineNr">401 </span> 68/push 0/imm32/address
<span id="L402" class="LineNr">402 </span> 68/push 0/imm32/alloc-id
<span id="L403" class="LineNr">403 </span> 89/copy 3/mod/direct 1/rm32/ecx <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 ecx</span>
<span id="L404" class="LineNr">404 </span> <span class="subxComment"># var old_top/ebx = heap->curr</span>
<span id="L405" class="LineNr">405 </span> 8b/copy 0/mod/indirect 6/rm32/esi <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 3/r32/ebx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy *esi to ebx</span>
<span id="L406" class="LineNr">406 </span> <span class="subxComment"># first allocation, to h1</span>
<span id="L407" class="LineNr">407 </span> <span class="subxS1Comment"># . allocate(heap, 2, h1)</span>
<span id="L408" class="LineNr">408 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L409" class="LineNr">409 </span> 51/push-ecx
<span id="L410" class="LineNr">410 </span> 68/push 2/imm32/size
<span id="L411" class="LineNr">411 </span> 56/push-esi
<span id="L412" class="LineNr">412 </span> <span class="subxS2Comment"># . . call</span>
<span id="L413" class="LineNr">413 </span> e8/call <a href='120allocate.subx.html#L66'>allocate</a>/disp32
<span id="L414" class="LineNr">414 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L415" class="LineNr">415 </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="L416" class="LineNr">416 </span> <span class="subxComment"># reset heap->curr to mimic reclamation</span>
<span id="L417" class="LineNr">417 </span> 89/copy 0/mod/indirect 6/rm32/esi <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 3/r32/ebx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy ebx to *esi</span>
<span id="L418" class="LineNr">418 </span> <span class="subxComment"># second allocation that returns the same address as the first</span>
<span id="L419" class="LineNr">419 </span> <span class="subxComment"># var h2/edx: handle</span>
<span id="L420" class="LineNr">420 </span> 68/push 0/imm32/address
<span id="L421" class="LineNr">421 </span> 68/push 0/imm32/alloc-id
<span id="L422" class="LineNr">422 </span> 89/copy 3/mod/direct 2/rm32/edx <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 edx</span>
<span id="L423" class="LineNr">423 </span> <span class="subxS1Comment"># . allocate(heap, 2, h2)</span>
<span id="L424" class="LineNr">424 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L425" class="LineNr">425 </span> 52/push-edx
<span id="L426" class="LineNr">426 </span> 68/push 2/imm32/size
<span id="L427" class="LineNr">427 </span> 56/push-esi
<span id="L428" class="LineNr">428 </span> <span class="subxS2Comment"># . . call</span>
<span id="L429" class="LineNr">429 </span> e8/call <a href='120allocate.subx.html#L66'>allocate</a>/disp32
<span id="L430" class="LineNr">430 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L431" class="LineNr">431 </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="L432" class="LineNr">432 </span> <span class="subxComment"># check-ints-equal(h1->address, h2->address, msg)</span>
<span id="L433" class="LineNr">433 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L434" class="LineNr">434 </span> 68/push <span class="Constant">"F - test-lookup-failure"</span>/imm32
<span id="L435" class="LineNr">435 </span> ff 6/subop/push 1/mod/*+disp8 2/rm32/ecx <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"># push *(edx+4)</span>
<span id="L436" class="LineNr">436 </span> ff 6/subop/push 1/mod/*+disp8 1/rm32/ecx <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"># push *(ecx+4)</span>
<span id="L437" class="LineNr">437 </span> <span class="subxS2Comment"># . . call</span>
<span id="L438" class="LineNr">438 </span> e8/call <a href='102test.subx.html#L23'>check-ints-equal</a>/disp32
<span id="L439" class="LineNr">439 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L440" class="LineNr">440 </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="L441" class="LineNr">441 </span> <span class="subxComment"># lookup(h1) should crash</span>
<span id="L442" class="LineNr">442 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L443" class="LineNr">443 </span> ff 6/subop/push 1/mod/*+disp8 1/rm32/ecx <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"># push *(ecx+4)</span>
<span id="L444" class="LineNr">444 </span> ff 6/subop/push 0/mod/indirect 1/rm32/ecx <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 *ecx</span>
<span id="L445" class="LineNr">445 </span> <span class="subxS2Comment"># . . call</span>
<span id="L446" class="LineNr">446 </span> e8/call <a href='120allocate.subx.html#L256'>lookup</a>/disp32
<span id="L447" class="LineNr">447 </span> <span class="subxComment"># should never get past this point</span>
<span id="L448" class="LineNr">448 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L449" class="LineNr">449 </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="L450" class="LineNr">450 </span> <span class="subxComment"># clean up</span>
<span id="L451" class="LineNr">451 </span> c7 0/subop/copy 0/mod/indirect 5/rm32/.disp32 <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="SpecialChar"><a href='120allocate.subx.html#L37'>Next-alloc-id</a></span>/disp32 0x100/imm32 <span class="subxComment"># copy to *Next-alloc-id</span>
<span id="L452" class="LineNr">452 </span> <span class="subxS1Comment"># . epilogue</span>
<span id="L453" class="LineNr">453 </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="L454" class="LineNr">454 </span> 5d/pop-to-ebp
<span id="L455" class="LineNr">455 </span> c3/return
<span id="L456" class="LineNr">456 </span>
<span id="L457" class="LineNr">457 </span><span class="subxComment"># when comparing handles, just treat them as pure values</span>
<span id="L458" class="LineNr">458 </span><span class="subxFunction">handle-equal?</span>: <span class="subxComment"># a: (handle _T), b: (handle _T) -> result/eax: boolean</span>
<span id="L459" class="LineNr">459 </span> <span class="subxS1Comment"># . prologue</span>
<span id="L460" class="LineNr">460 </span> 55/push-ebp
<span id="L461" class="LineNr">461 </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="L462" class="LineNr">462 </span> <span class="subxS1Comment"># . save registers</span>
<span id="L463" class="LineNr">463 </span> 51/push-ecx
<span id="L464" class="LineNr">464 </span> <span class="subxComment"># eax = false</span>
<span id="L465" class="LineNr">465 </span> b8/copy-to-eax 0/imm32/false
<span id="L466" class="LineNr">466 </span><span class="Constant">$handle-equal?:compare-alloc-id</span>:
<span id="L467" class="LineNr">467 </span> <span class="subxComment"># ecx = a->alloc_id</span>
<span id="L468" class="LineNr">468 </span> 8b/copy 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 1/r32/ecx 8/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy *(ebp+8) to ecx</span>
<span id="L469" class="LineNr">469 </span> <span class="subxComment"># if (ecx != b->alloc_id) return false</span>
<span id="L470" class="LineNr">470 </span> 39/compare 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 1/r32/ecx 0x10/disp8 <span class="Normal"> . </span> <span class="subxComment"># compare ecx and *(ebp+16)</span>
<span id="L471" class="LineNr">471 </span> 75/jump-if-!= $handle-equal?:end/disp8
<span id="L472" class="LineNr">472 </span><span class="Constant">$handle-equal?:compare-address</span>:
<span id="L473" class="LineNr">473 </span> <span class="subxComment"># ecx = handle->address</span>
<span id="L474" class="LineNr">474 </span> 8b/copy 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 1/r32/ecx 0xc/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy *(ebp+12) to ecx</span>
<span id="L475" class="LineNr">475 </span> <span class="subxComment"># if (ecx != b->address) return false</span>
<span id="L476" class="LineNr">476 </span> 39/compare 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 1/r32/ecx 0x14/disp8 <span class="Normal"> . </span> <span class="subxComment"># compare ecx and *(ebp+20)</span>
<span id="L477" class="LineNr">477 </span> 75/jump-if-!= $handle-equal?:end/disp8
<span id="L478" class="LineNr">478 </span><span class="Constant">$handle-equal?:return-true</span>:
<span id="L479" class="LineNr">479 </span> <span class="subxComment"># return true</span>
<span id="L480" class="LineNr">480 </span> b8/copy-to-eax 1/imm32/true
<span id="L481" class="LineNr">481 </span><span class="Constant">$handle-equal?:end</span>:
<span id="L482" class="LineNr">482 </span> <span class="subxS1Comment"># . restore registers</span>
<span id="L483" class="LineNr">483 </span> 59/pop-to-ecx
<span id="L484" class="LineNr">484 </span> <span class="subxS1Comment"># . epilogue</span>
<span id="L485" class="LineNr">485 </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="L486" class="LineNr">486 </span> 5d/pop-to-ebp
<span id="L487" class="LineNr">487 </span> c3/return
<span id="L488" class="LineNr">488 </span>
<span id="L489" class="LineNr">489 </span><span class="subxFunction">copy-handle</span>: <span class="subxComment"># src: (handle _T), dest: (addr handle _T)</span>
<span id="L490" class="LineNr">490 </span> <span class="subxS1Comment"># . prologue</span>
<span id="L491" class="LineNr">491 </span> 55/push-ebp
<span id="L492" class="LineNr">492 </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="L493" class="LineNr">493 </span> <span class="subxS1Comment"># . save registers</span>
<span id="L494" class="LineNr">494 </span> 50/push-eax
<span id="L495" class="LineNr">495 </span> 51/push-ecx
<span id="L496" class="LineNr">496 </span> <span class="subxComment"># ecx = dest</span>
<span id="L497" class="LineNr">497 </span> 8b/copy 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 1/r32/ecx 0x10/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy *(ebp+16) to ecx</span>
<span id="L498" class="LineNr">498 </span> <span class="subxComment"># *dest = src</span>
<span id="L499" class="LineNr">499 </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="L500" class="LineNr">500 </span> 89/copy 0/mod/indirect 1/rm32/ecx <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"># copy eax to *ecx</span>
<span id="L501" class="LineNr">501 </span> 8b/copy 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0/r32/eax 0xc/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy *(ebp+12) to eax</span>
<span id="L502" class="LineNr">502 </span> 89/copy 1/mod/*+disp8 1/rm32/ecx <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 eax to *(ecx+4)</span>
<span id="L503" class="LineNr">503 </span><span class="Constant">$copy-handle:end</span>:
<span id="L504" class="LineNr">504 </span> <span class="subxS1Comment"># . restore registers</span>
<span id="L505" class="LineNr">505 </span> 59/pop-to-ecx
<span id="L506" class="LineNr">506 </span> 58/pop-to-eax
<span id="L507" class="LineNr">507 </span> <span class="subxS1Comment"># . epilogue</span>
<span id="L508" class="LineNr">508 </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="L509" class="LineNr">509 </span> 5d/pop-to-ebp
<span id="L510" class="LineNr">510 </span> c3/return
<span id="L511" class="LineNr">511 </span>
<span id="L512" class="LineNr">512 </span><span class="subxComment"># helper: create a nested allocation descriptor (useful for tests)</span>
<span id="L513" class="LineNr">513 </span><span class="subxFunction">allocate-region</span>: <span class="subxComment"># ad: (addr allocation-descriptor), n: int, out: (addr handle allocation-descriptor)</span>
<span id="L514" class="LineNr">514 </span> <span class="subxS1Comment"># . prologue</span>
<span id="L515" class="LineNr">515 </span> 55/push-ebp
<span id="L516" class="LineNr">516 </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="L517" class="LineNr">517 </span> <span class="subxS1Comment"># . save registers</span>
<span id="L518" class="LineNr">518 </span> 50/push-eax
<span id="L519" class="LineNr">519 </span> 51/push-ecx
<span id="L520" class="LineNr">520 </span> <span class="subxComment"># allocate(ad, n, out)</span>
<span id="L521" class="LineNr">521 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L522" class="LineNr">522 </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="L523" class="LineNr">523 </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="L524" class="LineNr">524 </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="L525" class="LineNr">525 </span> <span class="subxS2Comment"># . . call</span>
<span id="L526" class="LineNr">526 </span> e8/call <a href='120allocate.subx.html#L66'>allocate</a>/disp32
<span id="L527" class="LineNr">527 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L528" class="LineNr">528 </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="L529" class="LineNr">529 </span> <span class="subxComment"># eax = out->payload</span>
<span id="L530" class="LineNr">530 </span> 8b/copy 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0/r32/eax 0x10/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy *(ebp+16) to eax</span>
<span id="L531" class="LineNr">531 </span> 8b/copy 1/mod/*+disp8 0/rm32/eax <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 *(eax+4) to eax</span>
<span id="L532" class="LineNr">532 </span> <span class="subxComment"># skip payload->allocid</span>
<span id="L533" class="LineNr">533 </span> 05/add-to-eax 4/imm32
<span id="L534" class="LineNr">534 </span> <span class="subxComment"># if (eax == 0) abort</span>
<span id="L535" class="LineNr">535 </span> 3d/compare-eax-and 0/imm32
<span id="L536" class="LineNr">536 </span> 74/jump-if-= $allocate-region:abort/disp8
<span id="L537" class="LineNr">537 </span> <span class="subxComment"># earmark 8 bytes at the start for a new allocation descriptor</span>
<span id="L538" class="LineNr">538 </span> <span class="subxS1Comment"># . *eax = eax + 8</span>
<span id="L539" class="LineNr">539 </span> 89/copy 3/mod/direct 1/rm32/ecx <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"># copy eax to ecx</span>
<span id="L540" class="LineNr">540 </span> 81 0/subop/add 3/mod/direct 1/rm32/ecx <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 ecx</span>
<span id="L541" class="LineNr">541 </span> 89/copy 0/mod/indirect 0/rm32/eax <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 ecx to *eax</span>
<span id="L542" class="LineNr">542 </span> <span class="subxS1Comment"># . *(eax+4) = eax + n</span>
<span id="L543" class="LineNr">543 </span> 89/copy 3/mod/direct 1/rm32/ecx <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"># copy eax to ecx</span>
<span id="L544" class="LineNr">544 </span> 03/add 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 1/r32/ecx 0xc/disp8 <span class="Normal"> . </span> <span class="subxComment"># add *(ebp+12) to ecx</span>
<span id="L545" class="LineNr">545 </span> 89/copy 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 ecx to *(eax+4)</span>
<span id="L546" class="LineNr">546 </span> <span class="subxS1Comment"># . restore registers</span>
<span id="L547" class="LineNr">547 </span> 59/pop-to-ecx
<span id="L548" class="LineNr">548 </span> 58/pop-to-eax
<span id="L549" class="LineNr">549 </span> <span class="subxS1Comment"># . epilogue</span>
<span id="L550" class="LineNr">550 </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="L551" class="LineNr">551 </span> 5d/pop-to-ebp
<span id="L552" class="LineNr">552 </span> c3/return
<span id="L553" class="LineNr">553 </span>
<span id="L554" class="LineNr">554 </span><span class="subxComment"># We could create a more general '$abort' jump target, but then we'd need to do</span>
<span id="L555" class="LineNr">555 </span><span class="subxComment"># a conditional jump followed by loading the error message and an unconditional</span>
<span id="L556" class="LineNr">556 </span><span class="subxComment"># jump. Or we'd need to unconditionally load the error message before a</span>
<span id="L557" class="LineNr">557 </span><span class="subxComment"># conditional jump, even if it's unused the vast majority of the time. This way</span>
<span id="L558" class="LineNr">558 </span><span class="subxComment"># we bloat a potentially cold segment in RAM so we can abort with a single</span>
<span id="L559" class="LineNr">559 </span><span class="subxComment"># instruction.</span>
<span id="L560" class="LineNr">560 </span><span class="Constant">$allocate-region:abort</span>:
<span id="L561" class="LineNr">561 </span> <span class="subxS1Comment"># . _write(2/stderr, error)</span>
<span id="L562" class="LineNr">562 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L563" class="LineNr">563 </span> 68/push <span class="Constant">"allocate-region: failed to allocate\n"</span>/imm32
<span id="L564" class="LineNr">564 </span> 68/push 2/imm32/stderr
<span id="L565" class="LineNr">565 </span> <span class="subxS2Comment"># . . call</span>
<span id="L566" class="LineNr">566 </span> e8/call <a href='101_write.subx.html#L12'>_write</a>/disp32
<span id="L567" class="LineNr">567 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L568" class="LineNr">568 </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="L569" class="LineNr">569 </span> <span class="subxS1Comment"># . syscall(exit, 1)</span>
<span id="L570" class="LineNr">570 </span> bb/copy-to-ebx 1/imm32
<span id="L571" class="LineNr">571 </span> e8/call syscall_exit/disp32
<span id="L572" class="LineNr">572 </span> <span class="subxComment"># never gets here</span>
<span id="L573" class="LineNr">573 </span>
<span id="L574" class="LineNr">574 </span><span class="subxComment"># Claim the next 'n+4' bytes of memory and initialize the first 4 to n.</span>
<span id="L575" class="LineNr">575 </span><span class="subxComment"># Abort if there isn't enough memory in 'ad'.</span>
<span id="L576" class="LineNr">576 </span><span class="subxFunction">allocate-array</span>: <span class="subxComment"># ad: (addr allocation-descriptor), n: int, out: (addr handle _)</span>
<span id="L577" class="LineNr">577 </span> <span class="subxS1Comment"># . prologue</span>
<span id="L578" class="LineNr">578 </span> 55/push-ebp
<span id="L579" class="LineNr">579 </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="L580" class="LineNr">580 </span> <span class="subxS1Comment"># . save registers</span>
<span id="L581" class="LineNr">581 </span> 50/push-eax
<span id="L582" class="LineNr">582 </span> 51/push-ecx
<span id="L583" class="LineNr">583 </span> 52/push-edx
<span id="L584" class="LineNr">584 </span> <span class="subxComment"># ecx = n</span>
<span id="L585" class="LineNr">585 </span> 8b/copy 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 1/r32/ecx 0xc/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy *(ebp+12) to ecx</span>
<span id="L586" class="LineNr">586 </span> <span class="subxComment"># var size/edx: int = n+4</span>
<span id="L587" class="LineNr">587 </span> 8d/copy-address 1/mod/*+disp8 1/rm32/ecx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 2/r32/edx 4/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy ecx+4 to edx</span>
<span id="L588" class="LineNr">588 </span> <span class="subxComment"># allocate(ad, size, out)</span>
<span id="L589" class="LineNr">589 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L590" class="LineNr">590 </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="L591" class="LineNr">591 </span> 52/push-edx
<span id="L592" class="LineNr">592 </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="L593" class="LineNr">593 </span> <span class="subxS2Comment"># . . call</span>
<span id="L594" class="LineNr">594 </span> e8/call <a href='120allocate.subx.html#L66'>allocate</a>/disp32
<span id="L595" class="LineNr">595 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L596" class="LineNr">596 </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="L597" class="LineNr">597 </span> <span class="subxComment"># *out->payload = n</span>
<span id="L598" class="LineNr">598 </span> 8b/copy 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0/r32/eax 0x10/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy *(ebp+16) to eax</span>
<span id="L599" class="LineNr">599 </span> 8b/copy 1/mod/*+disp8 0/rm32/eax <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 *(eax+4) to eax</span>
<span id="L600" class="LineNr">600 </span> <span class="subxS1Comment"># . skip payload->allocid</span>
<span id="L601" class="LineNr">601 </span> 05/add-to-eax 4/imm32
<span id="L602" class="LineNr">602 </span> <span class="subxS1Comment"># .</span>
<span id="L603" class="LineNr">603 </span> 89/copy 0/mod/indirect 0/rm32/eax <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 ecx to *eax</span>
<span id="L604" class="LineNr">604 </span><span class="Constant">$allocate-array:end</span>:
<span id="L605" class="LineNr">605 </span> <span class="subxS1Comment"># . restore registers</span>
<span id="L606" class="LineNr">606 </span> 5a/pop-to-edx
<span id="L607" class="LineNr">607 </span> 59/pop-to-ecx
<span id="L608" class="LineNr">608 </span> 58/pop-to-eax
<span id="L609" class="LineNr">609 </span> <span class="subxS1Comment"># . epilogue</span>
<span id="L610" class="LineNr">610 </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="L611" class="LineNr">611 </span> 5d/pop-to-ebp
<span id="L612" class="LineNr">612 </span> c3/return
<span id="L613" class="LineNr">613 </span>
<span id="L614" class="LineNr">614 </span><span class="subxTest">test-allocate-array</span>:
<span id="L615" class="LineNr">615 </span> <span class="subxS1Comment"># . prologue</span>
<span id="L616" class="LineNr">616 </span> 55/push-ebp
<span id="L617" class="LineNr">617 </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="L618" class="LineNr">618 </span> <span class="subxComment"># var ad/ecx: allocation-descriptor</span>
<span id="L619" class="LineNr">619 </span> 68/push 0/imm32/limit
<span id="L620" class="LineNr">620 </span> 68/push 0/imm32/curr
<span id="L621" class="LineNr">621 </span> 89/copy 3/mod/direct 1/rm32/ecx <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 ecx</span>
<span id="L622" class="LineNr">622 </span> <span class="subxComment"># ad = new-segment(512)</span>
<span id="L623" class="LineNr">623 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L624" class="LineNr">624 </span> 51/push-ecx
<span id="L625" class="LineNr">625 </span> 68/push 0x200/imm32
<span id="L626" class="LineNr">626 </span> <span class="subxS2Comment"># . . call</span>
<span id="L627" class="LineNr">627 </span> e8/call <a href='104new-segment.subx.html#L40'>new-segment</a>/disp32
<span id="L628" class="LineNr">628 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L629" class="LineNr">629 </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="L630" class="LineNr">630 </span> <span class="subxComment"># var expected-payload/ebx = ad->curr</span>
<span id="L631" class="LineNr">631 </span> 8b/copy 0/mod/indirect 1/rm32/ecx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 3/r32/ebx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy *ecx to ebx</span>
<span id="L632" class="LineNr">632 </span> <span class="subxComment"># var h/edx: handle = {0, 0}</span>
<span id="L633" class="LineNr">633 </span> 68/push 0/imm32
<span id="L634" class="LineNr">634 </span> 68/push 0/imm32
<span id="L635" class="LineNr">635 </span> 89/copy 3/mod/direct 2/rm32/edx <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 edx</span>
<span id="L636" class="LineNr">636 </span> <span class="subxComment"># *Next-alloc-id = 0x34</span>
<span id="L637" class="LineNr">637 </span> c7 0/subop/copy 0/mod/indirect 5/rm32/.disp32 <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="SpecialChar"><a href='120allocate.subx.html#L37'>Next-alloc-id</a></span>/disp32 0x34/imm32 <span class="subxComment"># copy to *Next-alloc-id</span>
<span id="L638" class="LineNr">638 </span> <span class="subxComment"># allocate-array(ad, 3, h)</span>
<span id="L639" class="LineNr">639 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L640" class="LineNr">640 </span> 52/push-edx
<span id="L641" class="LineNr">641 </span> 68/push 3/imm32
<span id="L642" class="LineNr">642 </span> 51/push-ecx
<span id="L643" class="LineNr">643 </span> <span class="subxS2Comment"># . . call</span>
<span id="L644" class="LineNr">644 </span> e8/call <a href='120allocate.subx.html#L576'>allocate-array</a>/disp32
<span id="L645" class="LineNr">645 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L646" class="LineNr">646 </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="L647" class="LineNr">647 </span> <span class="subxComment"># check-ints-equal(h->alloc-id, 0x34, msg)</span>
<span id="L648" class="LineNr">648 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L649" class="LineNr">649 </span> 68/push <span class="Constant">"F - <a href='120allocate.subx.html#L614'>test-allocate-array</a>: sets alloc-id in handle"</span>/imm32
<span id="L650" class="LineNr">650 </span> 68/push 0x34/imm32
<span id="L651" class="LineNr">651 </span> ff 6/subop/push 0/mod/indirect 2/rm32/edx <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 *edx</span>
<span id="L652" class="LineNr">652 </span> <span class="subxS2Comment"># . . call</span>
<span id="L653" class="LineNr">653 </span> e8/call <a href='102test.subx.html#L23'>check-ints-equal</a>/disp32
<span id="L654" class="LineNr">654 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L655" class="LineNr">655 </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="L656" class="LineNr">656 </span> <span class="subxComment"># check-ints-equal(h->payload, expected-payload, msg)</span>
<span id="L657" class="LineNr">657 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L658" class="LineNr">658 </span> 68/push <span class="Constant">"F - <a href='120allocate.subx.html#L614'>test-allocate-array</a>: sets payload in handle"</span>/imm32
<span id="L659" class="LineNr">659 </span> 53/push-ebx
<span id="L660" class="LineNr">660 </span> ff 6/subop/push 1/mod/*+disp8 2/rm32/edx <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"># push *(edx+4)</span>
<span id="L661" class="LineNr">661 </span> <span class="subxS2Comment"># . . call</span>
<span id="L662" class="LineNr">662 </span> e8/call <a href='102test.subx.html#L23'>check-ints-equal</a>/disp32
<span id="L663" class="LineNr">663 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L664" class="LineNr">664 </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="L665" class="LineNr">665 </span> <span class="subxComment"># check-ints-equal(h->payload->alloc-id, 0x34, msg)</span>
<span id="L666" class="LineNr">666 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L667" class="LineNr">667 </span> 68/push <span class="Constant">"F - <a href='120allocate.subx.html#L614'>test-allocate-array</a>: sets alloc-id in payload"</span>/imm32
<span id="L668" class="LineNr">668 </span> 68/push 0x34/imm32
<span id="L669" class="LineNr">669 </span> ff 6/subop/push 0/mod/indirect 3/rm32/ebx <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 *ebx</span>
<span id="L670" class="LineNr">670 </span> <span class="subxS2Comment"># . . call</span>
<span id="L671" class="LineNr">671 </span> e8/call <a href='102test.subx.html#L23'>check-ints-equal</a>/disp32
<span id="L672" class="LineNr">672 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L673" class="LineNr">673 </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="L674" class="LineNr">674 </span> <span class="subxComment"># check-ints-equal(h->payload->size, 3, msg)</span>
<span id="L675" class="LineNr">675 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L676" class="LineNr">676 </span> 68/push <span class="Constant">"F - <a href='120allocate.subx.html#L614'>test-allocate-array</a>: sets array <a href='307size.subx.html#L5'>size</a> in payload"</span>/imm32
<span id="L677" class="LineNr">677 </span> 68/push 3/imm32
<span id="L678" class="LineNr">678 </span> ff 6/subop/push 1/mod/*+disp8 3/rm32/ebx <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"># push *(ebx+4)</span>
<span id="L679" class="LineNr">679 </span> <span class="subxS2Comment"># . . call</span>
<span id="L680" class="LineNr">680 </span> e8/call <a href='102test.subx.html#L23'>check-ints-equal</a>/disp32
<span id="L681" class="LineNr">681 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L682" class="LineNr">682 </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="L683" class="LineNr">683 </span> <span class="subxComment"># check-ints-equal(*Next-alloc-id, 0x35, msg)</span>
<span id="L684" class="LineNr">684 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L685" class="LineNr">685 </span> 68/push <span class="Constant">"F - <a href='120allocate.subx.html#L614'>test-allocate-array</a>: increments Next-alloc-id"</span>/imm32
<span id="L686" class="LineNr">686 </span> 68/push 0x35/imm32
<span id="L687" class="LineNr">687 </span> ff 6/subop/push 0/mod/indirect 5/rm32/.disp32 <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="SpecialChar"><a href='120allocate.subx.html#L37'>Next-alloc-id</a></span>/disp32 <span class="subxComment"># push *Next-alloc-id</span>
<span id="L688" class="LineNr">688 </span> <span class="subxS2Comment"># . . call</span>
<span id="L689" class="LineNr">689 </span> e8/call <a href='102test.subx.html#L23'>check-ints-equal</a>/disp32
<span id="L690" class="LineNr">690 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L691" class="LineNr">691 </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="L692" class="LineNr">692 </span> <span class="subxComment"># check-ints-equal(ad->curr - expected-payload, 3 + 4 for alloc-id + 4 for array size, msg)</span>
<span id="L693" class="LineNr">693 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L694" class="LineNr">694 </span> 68/push <span class="Constant">"F - <a href='120allocate.subx.html#L614'>test-allocate-array</a>: updates allocation descriptor"</span>/imm32
<span id="L695" class="LineNr">695 </span> 68/push 0xb/imm32
<span id="L696" class="LineNr">696 </span> 8b/copy 0/mod/indirect 1/rm32/ecx <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"># copy *ecx to eax</span>
<span id="L697" class="LineNr">697 </span> 29/subtract 3/mod/direct 0/rm32/eax <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 3/r32/ebx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># subtract ebx from eax</span>
<span id="L698" class="LineNr">698 </span> 50/push-eax
<span id="L699" class="LineNr">699 </span> <span class="subxS2Comment"># . . call</span>
<span id="L700" class="LineNr">700 </span> e8/call <a href='102test.subx.html#L23'>check-ints-equal</a>/disp32
<span id="L701" class="LineNr">701 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L702" class="LineNr">702 </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="L703" class="LineNr">703 </span> <span class="subxComment"># clean up</span>
<span id="L704" class="LineNr">704 </span> c7 0/subop/copy 0/mod/indirect 5/rm32/.disp32 <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="SpecialChar"><a href='120allocate.subx.html#L37'>Next-alloc-id</a></span>/disp32 1/imm32 <span class="subxComment"># copy to *Next-alloc-id</span>
<span id="L705" class="LineNr">705 </span> <span class="subxS1Comment"># . epilogue</span>
<span id="L706" class="LineNr">706 </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="L707" class="LineNr">707 </span> 5d/pop-to-ebp
<span id="L708" class="LineNr">708 </span> c3/return
<span id="L709" class="LineNr">709 </span>
<span id="L710" class="LineNr">710 </span><span class="subxFunction">copy-array</span>: <span class="subxComment"># ad: (addr allocation-descriptor), src: (addr array _T), out: (addr handle array _T)</span>
<span id="L711" class="LineNr">711 </span> <span class="subxS1Comment"># . prologue</span>
<span id="L712" class="LineNr">712 </span> 55/push-ebp
<span id="L713" class="LineNr">713 </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="L714" class="LineNr">714 </span> <span class="subxS1Comment"># . save registers</span>
<span id="L715" class="LineNr">715 </span> 50/push-eax
<span id="L716" class="LineNr">716 </span> 51/push-ecx
<span id="L717" class="LineNr">717 </span> 52/push-edx
<span id="L718" class="LineNr">718 </span> 56/push-esi
<span id="L719" class="LineNr">719 </span> <span class="subxComment"># esi = src</span>
<span id="L720" class="LineNr">720 </span> 8b/copy 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 6/r32/esi 0xc/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy *(ebp+12) to esi</span>
<span id="L721" class="LineNr">721 </span> <span class="subxComment"># var size/ecx: int = src->size+4</span>
<span id="L722" class="LineNr">722 </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="L723" class="LineNr">723 </span> 81 0/subop/add 3/mod/direct 1/rm32/ecx <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 ecx</span>
<span id="L724" class="LineNr">724 </span> <span class="subxComment"># allocate(ad, size, out)</span>
<span id="L725" class="LineNr">725 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L726" class="LineNr">726 </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="L727" class="LineNr">727 </span> 51/push-ecx
<span id="L728" class="LineNr">728 </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="L729" class="LineNr">729 </span> <span class="subxS2Comment"># . . call</span>
<span id="L730" class="LineNr">730 </span> e8/call <a href='120allocate.subx.html#L66'>allocate</a>/disp32
<span id="L731" class="LineNr">731 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L732" class="LineNr">732 </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="L733" class="LineNr">733 </span> <span class="subxComment"># var payload/eax: (addr byte) = out->payload</span>
<span id="L734" class="LineNr">734 </span> 8b/copy 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0/r32/eax 0x10/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy *(ebp+16) to eax</span>
<span id="L735" class="LineNr">735 </span> 8b/copy 1/mod/*+disp8 0/rm32/eax <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 *(eax+4) to eax</span>
<span id="L736" class="LineNr">736 </span> <span class="subxS1Comment"># . skip payload->allocid</span>
<span id="L737" class="LineNr">737 </span> 05/add-to-eax 4/imm32
<span id="L738" class="LineNr">738 </span> <span class="subxComment"># var max/ecx: (addr byte) = payload + size</span>
<span id="L739" class="LineNr">739 </span> 01/add 3/mod/direct 1/rm32/ecx <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"># add eax to ecx</span>
<span id="L740" class="LineNr">740 </span> <span class="subxComment"># _append-4(payload, max, src, &src->data[src->size])</span>
<span id="L741" class="LineNr">741 </span> <span class="subxS2Comment"># . . push &src->data[src->size]</span>
<span id="L742" class="LineNr">742 </span> 8b/copy 0/mod/indirect 6/rm32/esi <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"># copy *esi to edx</span>
<span id="L743" class="LineNr">743 </span> 8d/copy-address 1/mod/*+disp8 4/rm32/sib 6/base/esi 2/index/edx <span class="Normal"> . </span> 2/r32/edx 4/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy esi+edx+4 to edx</span>
<span id="L744" class="LineNr">744 </span> 52/push-edx
<span id="L745" class="LineNr">745 </span> <span class="subxS2Comment"># . . push src</span>
<span id="L746" class="LineNr">746 </span> 56/push-esi
<span id="L747" class="LineNr">747 </span> <span class="subxS2Comment"># . . push max</span>
<span id="L748" class="LineNr">748 </span> 51/push-ecx
<span id="L749" class="LineNr">749 </span> <span class="subxS2Comment"># . . push payload</span>
<span id="L750" class="LineNr">750 </span> 50/push-eax
<span id="L751" class="LineNr">751 </span> <span class="subxS2Comment"># . . call</span>
<span id="L752" class="LineNr">752 </span> e8/call <a href='107trace.subx.html#L897'>_append-4</a>/disp32
<span id="L753" class="LineNr">753 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L754" class="LineNr">754 </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> 0x10/imm32 <span class="subxComment"># add to esp</span>
<span id="L755" class="LineNr">755 </span><span class="Constant">$copy-array:end</span>:
<span id="L756" class="LineNr">756 </span> <span class="subxS1Comment"># . restore registers</span>
<span id="L757" class="LineNr">757 </span> 5e/pop-to-esi
<span id="L758" class="LineNr">758 </span> 5a/pop-to-edx
<span id="L759" class="LineNr">759 </span> 59/pop-to-ecx
<span id="L760" class="LineNr">760 </span> 58/pop-to-eax
<span id="L761" class="LineNr">761 </span> <span class="subxS1Comment"># . epilogue</span>
<span id="L762" class="LineNr">762 </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="L763" class="LineNr">763 </span> 5d/pop-to-ebp
<span id="L764" class="LineNr">764 </span> c3/return
<span id="L765" class="LineNr">765 </span>
<span id="L766" class="LineNr">766 </span><span class="subxTest">test-copy-array</span>:
<span id="L767" class="LineNr">767 </span> <span class="subxS1Comment"># . prologue</span>
<span id="L768" class="LineNr">768 </span> 55/push-ebp
<span id="L769" class="LineNr">769 </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="L770" class="LineNr">770 </span> <span class="subxComment"># var src/esi: (addr array int) = [3, 4, 5]</span>
<span id="L771" class="LineNr">771 </span> 68/push 5/imm32
<span id="L772" class="LineNr">772 </span> 68/push 4/imm32
<span id="L773" class="LineNr">773 </span> 68/push 3/imm32
<span id="L774" class="LineNr">774 </span> 68/push 0xc/imm32/size
<span id="L775" class="LineNr">775 </span> 89/copy 3/mod/direct 6/rm32/esi <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 esi</span>
<span id="L776" class="LineNr">776 </span> <span class="subxComment"># var ad/ecx: allocation-descriptor</span>
<span id="L777" class="LineNr">777 </span> 68/push 0/imm32/limit
<span id="L778" class="LineNr">778 </span> 68/push 0/imm32/curr
<span id="L779" class="LineNr">779 </span> 89/copy 3/mod/direct 1/rm32/ecx <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 ecx</span>
<span id="L780" class="LineNr">780 </span> <span class="subxComment"># ad = new-segment(512)</span>
<span id="L781" class="LineNr">781 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L782" class="LineNr">782 </span> 51/push-ecx
<span id="L783" class="LineNr">783 </span> 68/push 0x200/imm32
<span id="L784" class="LineNr">784 </span> <span class="subxS2Comment"># . . call</span>
<span id="L785" class="LineNr">785 </span> e8/call <a href='104new-segment.subx.html#L40'>new-segment</a>/disp32
<span id="L786" class="LineNr">786 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L787" class="LineNr">787 </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="L788" class="LineNr">788 </span> <span class="subxComment"># var expected-payload/ebx = ad->curr</span>
<span id="L789" class="LineNr">789 </span> 8b/copy 0/mod/indirect 1/rm32/ecx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 3/r32/ebx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy *ecx to ebx</span>
<span id="L790" class="LineNr">790 </span> <span class="subxComment"># var h/edx: handle = {0, 0}</span>
<span id="L791" class="LineNr">791 </span> 68/push 0/imm32
<span id="L792" class="LineNr">792 </span> 68/push 0/imm32
<span id="L793" class="LineNr">793 </span> 89/copy 3/mod/direct 2/rm32/edx <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 edx</span>
<span id="L794" class="LineNr">794 </span> <span class="subxComment"># *Next-alloc-id = 0x34</span>
<span id="L795" class="LineNr">795 </span> c7 0/subop/copy 0/mod/indirect 5/rm32/.disp32 <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="SpecialChar"><a href='120allocate.subx.html#L37'>Next-alloc-id</a></span>/disp32 0x34/imm32 <span class="subxComment"># copy to *Next-alloc-id</span>
<span id="L796" class="LineNr">796 </span> <span class="subxComment"># copy-array(ad, src, h)</span>
<span id="L797" class="LineNr">797 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L798" class="LineNr">798 </span> 52/push-edx
<span id="L799" class="LineNr">799 </span> 56/push-esi
<span id="L800" class="LineNr">800 </span> 51/push-ecx
<span id="L801" class="LineNr">801 </span> <span class="subxS2Comment"># . . call</span>
<span id="L802" class="LineNr">802 </span> e8/call <a href='120allocate.subx.html#L710'>copy-array</a>/disp32
<span id="L803" class="LineNr">803 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L804" class="LineNr">804 </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="L805" class="LineNr">805 </span> <span class="subxComment"># check-ints-equal(h->alloc-id, 0x34, msg)</span>
<span id="L806" class="LineNr">806 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L807" class="LineNr">807 </span> 68/push <span class="Constant">"F - <a href='120allocate.subx.html#L766'>test-copy-array</a>: sets alloc-id in handle"</span>/imm32
<span id="L808" class="LineNr">808 </span> 68/push 0x34/imm32
<span id="L809" class="LineNr">809 </span> ff 6/subop/push 0/mod/indirect 2/rm32/edx <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 *edx</span>
<span id="L810" class="LineNr">810 </span> <span class="subxS2Comment"># . . call</span>
<span id="L811" class="LineNr">811 </span> e8/call <a href='102test.subx.html#L23'>check-ints-equal</a>/disp32
<span id="L812" class="LineNr">812 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L813" class="LineNr">813 </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="L814" class="LineNr">814 </span> <span class="subxComment"># check-ints-equal(h->payload, expected-payload, msg)</span>
<span id="L815" class="LineNr">815 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L816" class="LineNr">816 </span> 68/push <span class="Constant">"F - <a href='120allocate.subx.html#L766'>test-copy-array</a>: sets payload in handle"</span>/imm32
<span id="L817" class="LineNr">817 </span> 53/push-ebx
<span id="L818" class="LineNr">818 </span> ff 6/subop/push 1/mod/*+disp8 2/rm32/edx <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"># push *(edx+4)</span>
<span id="L819" class="LineNr">819 </span> <span class="subxS2Comment"># . . call</span>
<span id="L820" class="LineNr">820 </span> e8/call <a href='102test.subx.html#L23'>check-ints-equal</a>/disp32
<span id="L821" class="LineNr">821 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L822" class="LineNr">822 </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="L823" class="LineNr">823 </span> <span class="subxComment"># check-ints-equal(h->payload->alloc-id, 0x34, msg)</span>
<span id="L824" class="LineNr">824 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L825" class="LineNr">825 </span> 68/push <span class="Constant">"F - <a href='120allocate.subx.html#L766'>test-copy-array</a>: sets alloc-id in payload"</span>/imm32
<span id="L826" class="LineNr">826 </span> 68/push 0x34/imm32
<span id="L827" class="LineNr">827 </span> ff 6/subop/push 0/mod/indirect 2/rm32/edx <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 *edx</span>
<span id="L828" class="LineNr">828 </span> <span class="subxS2Comment"># . . call</span>
<span id="L829" class="LineNr">829 </span> e8/call <a href='102test.subx.html#L23'>check-ints-equal</a>/disp32
<span id="L830" class="LineNr">830 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L831" class="LineNr">831 </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="L832" class="LineNr">832 </span> <span class="subxComment"># var payload/eax: (addr int) = lookup(h)</span>
<span id="L833" class="LineNr">833 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L834" class="LineNr">834 </span> ff 6/subop/push 1/mod/*+disp8 2/rm32/edx <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"># push *(edx+4)</span>
<span id="L835" class="LineNr">835 </span> ff 6/subop/push 0/mod/indirect 2/rm32/edx <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 *edx</span>
<span id="L836" class="LineNr">836 </span> <span class="subxS2Comment"># . . call</span>
<span id="L837" class="LineNr">837 </span> e8/call <a href='120allocate.subx.html#L256'>lookup</a>/disp32
<span id="L838" class="LineNr">838 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L839" class="LineNr">839 </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="L840" class="LineNr">840 </span> <span class="subxComment"># check-ints-equal(payload->size, 0xc, msg)</span>
<span id="L841" class="LineNr">841 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L842" class="LineNr">842 </span> 68/push <span class="Constant">"F - <a href='120allocate.subx.html#L766'>test-copy-array</a>: sets array <a href='307size.subx.html#L5'>size</a> in payload"</span>/imm32
<span id="L843" class="LineNr">843 </span> 68/push 0xc/imm32
<span id="L844" class="LineNr">844 </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="L845" class="LineNr">845 </span> <span class="subxS2Comment"># . . call</span>
<span id="L846" class="LineNr">846 </span> e8/call <a href='102test.subx.html#L23'>check-ints-equal</a>/disp32
<span id="L847" class="LineNr">847 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L848" class="LineNr">848 </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="L849" class="LineNr">849 </span> <span class="subxComment"># check-ints-equal(*Next-alloc-id, 0x35, msg)</span>
<span id="L850" class="LineNr">850 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L851" class="LineNr">851 </span> 68/push <span class="Constant">"F - <a href='120allocate.subx.html#L766'>test-copy-array</a>: increments Next-alloc-id"</span>/imm32
<span id="L852" class="LineNr">852 </span> 68/push 0x35/imm32
<span id="L853" class="LineNr">853 </span> ff 6/subop/push 0/mod/indirect 5/rm32/.disp32 <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="SpecialChar"><a href='120allocate.subx.html#L37'>Next-alloc-id</a></span>/disp32 <span class="subxComment"># push *Next-alloc-id</span>
<span id="L854" class="LineNr">854 </span> <span class="subxS2Comment"># . . call</span>
<span id="L855" class="LineNr">855 </span> e8/call <a href='102test.subx.html#L23'>check-ints-equal</a>/disp32
<span id="L856" class="LineNr">856 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L857" class="LineNr">857 </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="L858" class="LineNr">858 </span> <span class="subxComment"># check-ints-equal(ad->curr - expected-payload, 12 + 4 for alloc-id + 4 for size, msg)</span>
<span id="L859" class="LineNr">859 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L860" class="LineNr">860 </span> 68/push <span class="Constant">"F - <a href='120allocate.subx.html#L766'>test-copy-array</a>: updates allocation descriptor"</span>/imm32
<span id="L861" class="LineNr">861 </span> 68/push 0x14/imm32
<span id="L862" class="LineNr">862 </span> 8b/copy 0/mod/indirect 1/rm32/ecx <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"># copy *ecx to eax</span>
<span id="L863" class="LineNr">863 </span> 29/subtract 3/mod/direct 0/rm32/eax <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 3/r32/ebx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># subtract ebx from eax</span>
<span id="L864" class="LineNr">864 </span> 50/push-eax
<span id="L865" class="LineNr">865 </span> <span class="subxS2Comment"># . . call</span>
<span id="L866" class="LineNr">866 </span> e8/call <a href='102test.subx.html#L23'>check-ints-equal</a>/disp32
<span id="L867" class="LineNr">867 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L868" class="LineNr">868 </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="L869" class="LineNr">869 </span> <span class="subxComment"># clean up</span>
<span id="L870" class="LineNr">870 </span> c7 0/subop/copy 0/mod/indirect 5/rm32/.disp32 <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="SpecialChar"><a href='120allocate.subx.html#L37'>Next-alloc-id</a></span>/disp32 1/imm32 <span class="subxComment"># copy to *Next-alloc-id</span>
<span id="L871" class="LineNr">871 </span> <span class="subxS1Comment"># . epilogue</span>
<span id="L872" class="LineNr">872 </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="L873" class="LineNr">873 </span> 5d/pop-to-ebp
<span id="L874" class="LineNr">874 </span> c3/return
<span id="L875" class="LineNr">875 </span>
<span id="L876" class="LineNr">876 </span><span class="subxComment"># Fill a region of memory with zeroes.</span>
<span id="L877" class="LineNr">877 </span><span class="subxFunction">zero-out</span>: <span class="subxComment"># start: (addr byte), size: int</span>
<span id="L878" class="LineNr">878 </span> <span class="subxComment"># pseudocode:</span>
<span id="L879" class="LineNr">879 </span> <span class="subxComment"># curr/esi = start</span>
<span id="L880" class="LineNr">880 </span> <span class="subxComment"># i/ecx = 0</span>
<span id="L881" class="LineNr">881 </span> <span class="subxComment"># while true</span>
<span id="L882" class="LineNr">882 </span> <span class="subxComment"># if (i >= size) break</span>
<span id="L883" class="LineNr">883 </span> <span class="subxComment"># *curr = 0</span>
<span id="L884" class="LineNr">884 </span> <span class="subxComment"># ++curr</span>
<span id="L885" class="LineNr">885 </span> <span class="subxComment"># ++i</span>
<span id="L886" class="LineNr">886 </span> <span class="subxComment">#</span>
<span id="L887" class="LineNr">887 </span> <span class="subxS1Comment"># . prologue</span>
<span id="L888" class="LineNr">888 </span> 55/push-ebp
<span id="L889" class="LineNr">889 </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="L890" class="LineNr">890 </span> <span class="subxS1Comment"># . save registers</span>
<span id="L891" class="LineNr">891 </span> 50/push-eax
<span id="L892" class="LineNr">892 </span> 51/push-ecx
<span id="L893" class="LineNr">893 </span> 52/push-edx
<span id="L894" class="LineNr">894 </span> 56/push-esi
<span id="L895" class="LineNr">895 </span> <span class="subxComment"># curr/esi = start</span>
<span id="L896" class="LineNr">896 </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="L897" class="LineNr">897 </span> <span class="subxComment"># var i/ecx: int = 0</span>
<span id="L898" class="LineNr">898 </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="L899" class="LineNr">899 </span> <span class="subxComment"># edx = size</span>
<span id="L900" class="LineNr">900 </span> 8b/copy 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 2/r32/edx 0xc/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy *(ebp+12) to edx</span>
<span id="L901" class="LineNr">901 </span><span class="Constant">$zero-out:loop</span>:
<span id="L902" class="LineNr">902 </span> <span class="subxComment"># if (i >= size) break</span>
<span id="L903" class="LineNr">903 </span> 39/compare 3/mod/direct 1/rm32/ecx <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 ecx with edx</span>
<span id="L904" class="LineNr">904 </span> 7d/jump-if->= $zero-out:end/disp8
<span id="L905" class="LineNr">905 </span> <span class="subxComment"># *curr = 0</span>
<span id="L906" class="LineNr">906 </span> c6 0/subop/copy 0/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> 0/imm8 <span class="subxComment"># copy byte to *esi</span>
<span id="L907" class="LineNr">907 </span> <span class="subxComment"># ++curr</span>
<span id="L908" class="LineNr">908 </span> 46/increment-esi
<span id="L909" class="LineNr">909 </span> <span class="subxComment"># ++i</span>
<span id="L910" class="LineNr">910 </span> 41/increment-ecx
<span id="L911" class="LineNr">911 </span> eb/jump $zero-out:<span class="Constant">loop</span>/disp8
<span id="L912" class="LineNr">912 </span><span class="Constant">$zero-out:end</span>:
<span id="L913" class="LineNr">913 </span> <span class="subxS1Comment"># . restore registers</span>
<span id="L914" class="LineNr">914 </span> 5e/pop-to-esi
<span id="L915" class="LineNr">915 </span> 5a/pop-to-edx
<span id="L916" class="LineNr">916 </span> 59/pop-to-ecx
<span id="L917" class="LineNr">917 </span> 58/pop-to-eax
<span id="L918" class="LineNr">918 </span> <span class="subxS1Comment"># . epilogue</span>
<span id="L919" class="LineNr">919 </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="L920" class="LineNr">920 </span> 5d/pop-to-ebp
<span id="L921" class="LineNr">921 </span> c3/return
<span id="L922" class="LineNr">922 </span>
<span id="L923" class="LineNr">923 </span><span class="subxTest">test-zero-out</span>:
<span id="L924" class="LineNr">924 </span> <span class="subxS1Comment"># . prologue</span>
<span id="L925" class="LineNr">925 </span> 55/push-ebp
<span id="L926" class="LineNr">926 </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="L927" class="LineNr">927 </span> <span class="subxComment"># region/ecx = 34, 35, 36, 37</span>
<span id="L928" class="LineNr">928 </span> 68/push 0x37363534/imm32
<span id="L929" class="LineNr">929 </span> 89/copy 3/mod/direct 1/rm32/ecx <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 ecx</span>
<span id="L930" class="LineNr">930 </span> <span class="subxComment"># zero-out(ecx, 3)</span>
<span id="L931" class="LineNr">931 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L932" class="LineNr">932 </span> 68/push 3/imm32/size
<span id="L933" class="LineNr">933 </span> 51/push-ecx
<span id="L934" class="LineNr">934 </span> <span class="subxS2Comment"># . . call</span>
<span id="L935" class="LineNr">935 </span> e8/call <a href='120allocate.subx.html#L877'>zero-out</a>/disp32
<span id="L936" class="LineNr">936 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L937" class="LineNr">937 </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="L938" class="LineNr">938 </span> <span class="subxComment"># first 3 bytes cleared, fourth left alone</span>
<span id="L939" class="LineNr">939 </span> <span class="subxS1Comment"># . check-ints-equal(*ecx, 0x37000000, msg)</span>
<span id="L940" class="LineNr">940 </span> <span class="subxS2Comment"># . . push args</span>
<span id="L941" class="LineNr">941 </span> 68/push <span class="Constant">"F - test-zero-out"</span>/imm32
<span id="L942" class="LineNr">942 </span> 68/push 0x37000000/imm32
<span id="L943" class="LineNr">943 </span> ff 6/subop/push 0/mod/indirect 1/rm32/ecx <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 *ecx</span>
<span id="L944" class="LineNr">944 </span> <span class="subxS2Comment"># . . call</span>
<span id="L945" class="LineNr">945 </span> e8/call <a href='102test.subx.html#L23'>check-ints-equal</a>/disp32
<span id="L946" class="LineNr">946 </span> <span class="subxS2Comment"># . . discard args</span>
<span id="L947" class="LineNr">947 </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="L948" class="LineNr">948 </span> <span class="subxS1Comment"># . epilogue</span>
<span id="L949" class="LineNr">949 </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="L950" class="LineNr">950 </span> 5d/pop-to-ebp
<span id="L951" class="LineNr">951 </span> c3/return
<span id="L952" class="LineNr">952 </span>
<span id="L953" class="LineNr">953 </span><span class="subxS2Comment"># . . vim:nowrap:textwidth=0</span>
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