diff options
| author | Kartik Agaram <vc@akkartik.com> | 2020-04-03 00:19:31 -0700 |
|---|---|---|
| committer | Kartik Agaram <vc@akkartik.com> | 2020-05-18 00:44:46 -0700 |
| commit | ca358b17a3fc36adcfbbb565675998de2d3e3576 (patch) | |
| tree | 32c1d8726f4593521e1bc67b8e2d1ae4633c2d40 /html | |
| parent | 546a92985f7da2491077d641a2c118b4af7f6913 (diff) | |
| download | mu-ca358b17a3fc36adcfbbb565675998de2d3e3576.tar.gz | |
table primitives working
$ ./translate_subx init.linux 0*.subx && ./a.elf test
Diffstat (limited to 'html')
| -rw-r--r-- | html/apps/handle.subx.html | 495 |
1 files changed, 0 insertions, 495 deletions
diff --git a/html/apps/handle.subx.html b/html/apps/handle.subx.html deleted file mode 100644 index 9cf47d93..00000000 --- a/html/apps/handle.subx.html +++ /dev/null @@ -1,495 +0,0 @@ -<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> -<html> -<head> -<meta http-equiv="content-type" content="text/html; charset=UTF-8"> -<title>Mu - apps/handle.subx</title> -<meta name="Generator" content="Vim/8.1"> -<meta name="plugin-version" content="vim8.1_v1"> -<meta name="syntax" content="none"> -<meta name="settings" content="number_lines,use_css,no_foldcolumn,expand_tabs,line_ids,prevent_copy="> -<meta name="colorscheme" content="minimal-light"> -<style type="text/css"> -<!-- -pre { font-family: monospace; color: #000000; background-color: #c6c6c6; } -body { font-size:12pt; font-family: monospace; color: #000000; background-color: #c6c6c6; } -a { color:inherit; } -* { font-size:12pt; font-size: 1em; } -.subxComment { color: #005faf; } -.subxS2Comment { color: #8a8a8a; } -.subxFunction { color: #af5f00; text-decoration: underline; } -.subxH1Comment { color: #005faf; text-decoration: underline; } -.LineNr { } -.subxS1Comment { color: #0000af; } -.CommentedCode { color: #8a8a8a; } -.SpecialChar { color: #d70000; } -.Normal { color: #000000; background-color: #c6c6c6; padding-bottom: 1px; } -.subxMinorFunction { color: #875f5f; } -.Constant { color: #008787; } -.subxTest { color: #5f8700; } ---> -</style> - -<script type='text/javascript'> -<!-- - -/* function to open any folds containing a jumped-to line before jumping to it */ -function JumpToLine() -{ - var lineNum; - lineNum = window.location.hash; - lineNum = lineNum.substr(1); /* strip off '#' */ - - if (lineNum.indexOf('L') == -1) { - lineNum = 'L'+lineNum; - } - var lineElem = document.getElementById(lineNum); - /* Always jump to new location even if the line was hidden inside a fold, or - * we corrected the raw number to a line ID. - */ - if (lineElem) { - lineElem.scrollIntoView(true); - } - return true; -} -if ('onhashchange' in window) { - window.onhashchange = JumpToLine; -} - ---> -</script> -</head> -<body onload='JumpToLine();'> -<a href='https://github.com/akkartik/mu/blob/master/apps/handle.subx'>https://github.com/akkartik/mu/blob/master/apps/handle.subx</a> -<pre id='vimCodeElement'> -<span id="L1" class="LineNr"> 1 </span><span class="subxComment"># A sketch of Mu-style handles or kinda-safe pointers, that add a modicum of</span> -<span id="L2" class="LineNr"> 2 </span><span class="subxComment"># checking to dynamically allocated memory.</span> -<span id="L3" class="LineNr"> 3 </span><span class="subxComment">#</span> -<span id="L4" class="LineNr"> 4 </span><span class="subxComment"># This approach avoids using 'allocate' directly in favor of two primitives:</span> -<span id="L5" class="LineNr"> 5 </span><span class="subxComment"># - 'new', which allocates some space (the 'payload'), stores the address</span> -<span id="L6" class="LineNr"> 6 </span><span class="subxComment"># along with an opaque 'alloc id' in a 'handle', and prepends the same</span> -<span id="L7" class="LineNr"> 7 </span><span class="subxComment"># alloc id to the payload.</span> -<span id="L8" class="LineNr"> 8 </span><span class="subxComment"># - 'lookup', which checks that the alloc id at the start of a handle matches</span> -<span id="L9" class="LineNr"> 9 </span><span class="subxComment"># the alloc id at the start of the payload before returning the address.</span> -<span id="L10" class="LineNr"> 10 </span><span class="subxComment">#</span> -<span id="L11" class="LineNr"> 11 </span><span class="subxComment"># Layout of a handle:</span> -<span id="L12" class="LineNr"> 12 </span><span class="subxComment"># offset 0: alloc id</span> -<span id="L13" class="LineNr"> 13 </span><span class="subxComment"># offset 4: address</span> -<span id="L14" class="LineNr"> 14 </span><span class="subxComment">#</span> -<span id="L15" class="LineNr"> 15 </span><span class="subxComment"># To run:</span> -<span id="L16" class="LineNr"> 16 </span><span class="subxComment"># $ ./bootstrap translate init.linux 0*.subx apps/handle.subx -o apps/handle</span> -<span id="L17" class="LineNr"> 17 </span><span class="subxComment"># $ ./bootstrap run apps/handle</span> -<span id="L18" class="LineNr"> 18 </span><span class="subxComment"># Expected result is a successful lookup followed by a hard abort:</span> -<span id="L19" class="LineNr"> 19 </span><span class="subxComment"># lookup succeeded</span> -<span id="L20" class="LineNr"> 20 </span><span class="subxComment"># lookup failed</span> -<span id="L21" class="LineNr"> 21 </span><span class="subxComment"># (This file is a prototype. The 'tests' in it aren't real; failures are</span> -<span id="L22" class="LineNr"> 22 </span><span class="subxComment"># expected.)</span> -<span id="L23" class="LineNr"> 23 </span> -<span id="L24" class="LineNr"> 24 </span>== code -<span id="L25" class="LineNr"> 25 </span><span class="subxComment"># instruction effective address register displacement immediate</span> -<span id="L26" class="LineNr"> 26 </span><span class="subxS1Comment"># . op subop mod rm32 base index scale r32</span> -<span id="L27" class="LineNr"> 27 </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="L28" class="LineNr"> 28 </span> -<span id="L29" class="LineNr"> 29 </span><span class="SpecialChar">Entry</span>: -<span id="L30" class="LineNr"> 30 </span> <span class="subxComment"># initialize heap</span> -<span id="L31" class="LineNr"> 31 </span> <span class="subxS1Comment"># . Heap = new-segment(Heap-size)</span> -<span id="L32" class="LineNr"> 32 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L33" class="LineNr"> 33 </span> 68/push <span class="SpecialChar"><a href='../069allocate.subx.html#L22'>Heap</a></span>/imm32 -<span id="L34" class="LineNr"> 34 </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='../069allocate.subx.html#L29'>Heap-size</a></span>/disp32 <span class="subxComment"># push *Heap-size</span> -<span id="L35" class="LineNr"> 35 </span> <span class="subxS2Comment"># . . call</span> -<span id="L36" class="LineNr"> 36 </span> e8/call <a href='../053new-segment.subx.html#L41'>new-segment</a>/disp32 -<span id="L37" class="LineNr"> 37 </span> <span class="subxS2Comment"># . . discard args</span> -<span id="L38" class="LineNr"> 38 </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="L39" class="LineNr"> 39 </span> -<span id="L40" class="LineNr"> 40 </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="L41" class="LineNr"> 41 </span><span class="Constant">$handle-main:end</span>: -<span id="L42" class="LineNr"> 42 </span> <span class="subxComment"># syscall(exit, Num-test-failures)</span> -<span id="L43" class="LineNr"> 43 </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='../051test.subx.html#L90'>Num-test-failures</a></span>/disp32 <span class="subxComment"># copy *Num-test-failures to ebx</span> -<span id="L44" class="LineNr"> 44 </span> b8/copy-to-eax 1/imm32/exit -<span id="L45" class="LineNr"> 45 </span> cd/syscall 0x80/imm8 -<span id="L46" class="LineNr"> 46 </span> -<span id="L47" class="LineNr"> 47 </span><span class="subxFunction">new</span>: <span class="subxComment"># ad: (addr allocation-descriptor), n: int, out: (handle _)</span> -<span id="L48" class="LineNr"> 48 </span> <span class="subxS1Comment"># . prologue</span> -<span id="L49" class="LineNr"> 49 </span> 55/push-ebp -<span id="L50" class="LineNr"> 50 </span> 89/copy 3/mod/direct 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 4/r32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy esp to ebp</span> -<span id="L51" class="LineNr"> 51 </span> <span class="subxS1Comment"># . save registers</span> -<span id="L52" class="LineNr"> 52 </span> 50/push-eax -<span id="L53" class="LineNr"> 53 </span> 51/push-ecx -<span id="L54" class="LineNr"> 54 </span> 52/push-edx -<span id="L55" class="LineNr"> 55 </span> <span class="subxComment"># ecx = n+4</span> -<span id="L56" class="LineNr"> 56 </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="L57" class="LineNr"> 57 </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="L58" class="LineNr"> 58 </span> <span class="subxComment"># var eax: (handle _) = allocate(ad, ecx)</span> -<span id="L59" class="LineNr"> 59 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L60" class="LineNr"> 60 </span> 51/push-ecx -<span id="L61" class="LineNr"> 61 </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="L62" class="LineNr"> 62 </span> <span class="subxS2Comment"># . . call</span> -<span id="L63" class="LineNr"> 63 </span> e8/call <a href='../069allocate.subx.html#L59'>allocate</a>/disp32 -<span id="L64" class="LineNr"> 64 </span> <span class="subxS2Comment"># . . discard args</span> -<span id="L65" class="LineNr"> 65 </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="L66" class="LineNr"> 66 </span> <span class="subxComment"># edx = out</span> -<span id="L67" class="LineNr"> 67 </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="L68" class="LineNr"> 68 </span> <span class="subxComment"># out->address = eax</span> -<span id="L69" class="LineNr"> 69 </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="L70" class="LineNr"> 70 </span> <span class="subxComment"># if (eax == 0) out->alloc_id = 0, return</span> -<span id="L71" class="LineNr"> 71 </span> 3d/compare-eax-and 0/imm32 -<span id="L72" class="LineNr"> 72 </span> 75/jump-if-!= $new:continue/disp8 -<span id="L73" class="LineNr"> 73 </span> c7 0/subop/copy 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> 0/imm32 <span class="subxComment"># copy to *edx</span> -<span id="L74" class="LineNr"> 74 </span> eb/jump $new:end/disp8 -<span id="L75" class="LineNr"> 75 </span><span class="Constant">$new:continue</span>: -<span id="L76" class="LineNr"> 76 </span> <span class="subxComment"># otherwise:</span> -<span id="L77" class="LineNr"> 77 </span> <span class="subxComment"># ecx = *Next-alloc-id</span> -<span id="L78" class="LineNr"> 78 </span> 8b/copy 0/mod/indirect 5/rm32/.disp32 <span class="Normal"> . </span> <span class="Normal"> . </span> 1/r32/ecx <span class="SpecialChar"><a href='handle.subx.html#L425'>Next-alloc-id</a></span>/disp32 <span class="subxComment"># copy *Next-alloc-id to ecx</span> -<span id="L79" class="LineNr"> 79 </span> <span class="subxComment"># *eax = *Next-alloc-id/ecx</span> -<span id="L80" class="LineNr"> 80 </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="L81" class="LineNr"> 81 </span> <span class="subxComment"># out->alloc_id = *Next-alloc-id</span> -<span id="L82" class="LineNr"> 82 </span> 89/copy 0/mod/indirect 2/rm32/edx <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 *edx</span> -<span id="L83" class="LineNr"> 83 </span> <span class="subxComment"># increment *Next-alloc-id</span> -<span id="L84" class="LineNr"> 84 </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='handle.subx.html#L425'>Next-alloc-id</a></span>/disp32 <span class="subxComment"># increment *Next-alloc-id</span> -<span id="L85" class="LineNr"> 85 </span><span class="Constant">$new:end</span>: -<span id="L86" class="LineNr"> 86 </span> <span class="subxS1Comment"># . restore registers</span> -<span id="L87" class="LineNr"> 87 </span> 5a/pop-to-edx -<span id="L88" class="LineNr"> 88 </span> 59/pop-to-ecx -<span id="L89" class="LineNr"> 89 </span> 58/pop-to-eax -<span id="L90" class="LineNr"> 90 </span> <span class="subxS1Comment"># . epilogue</span> -<span id="L91" class="LineNr"> 91 </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="L92" class="LineNr"> 92 </span> 5d/pop-to-ebp -<span id="L93" class="LineNr"> 93 </span> c3/return -<span id="L94" class="LineNr"> 94 </span> -<span id="L95" class="LineNr"> 95 </span><span class="subxTest">test-new</span>: -<span id="L96" class="LineNr"> 96 </span> <span class="subxS1Comment"># . prologue</span> -<span id="L97" class="LineNr"> 97 </span> 55/push-ebp -<span id="L98" class="LineNr"> 98 </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="L99" class="LineNr"> 99 </span> <span class="subxComment"># var heap/edx: allocation-descriptor</span> -<span id="L100" class="LineNr">100 </span> 68/push 0/imm32/limit -<span id="L101" class="LineNr">101 </span> 68/push 0/imm32/curr -<span id="L102" class="LineNr">102 </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="L103" class="LineNr">103 </span> <span class="subxComment"># heap = new-segment(512)</span> -<span id="L104" class="LineNr">104 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L105" class="LineNr">105 </span> 52/push-edx -<span id="L106" class="LineNr">106 </span> 68/push 0x200/imm32 -<span id="L107" class="LineNr">107 </span> <span class="subxS2Comment"># . . call</span> -<span id="L108" class="LineNr">108 </span> e8/call <a href='../053new-segment.subx.html#L41'>new-segment</a>/disp32 -<span id="L109" class="LineNr">109 </span> <span class="subxS2Comment"># . . discard args</span> -<span id="L110" class="LineNr">110 </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="L111" class="LineNr">111 </span> <span class="subxComment"># *Next-alloc-id = 0x34</span> -<span id="L112" class="LineNr">112 </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='handle.subx.html#L425'>Next-alloc-id</a></span>/disp32 0x34/imm32 <span class="subxComment"># copy to *Next-alloc-id</span> -<span id="L113" class="LineNr">113 </span> <span class="subxComment"># var handle/ecx: handle</span> -<span id="L114" class="LineNr">114 </span> 68/push 0/imm32/address -<span id="L115" class="LineNr">115 </span> 68/push 0/imm32/alloc-id -<span id="L116" class="LineNr">116 </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="L117" class="LineNr">117 </span> <span class="subxComment"># new(heap, 2, handle/ecx)</span> -<span id="L118" class="LineNr">118 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L119" class="LineNr">119 </span> 51/push-ecx -<span id="L120" class="LineNr">120 </span> 68/push 2/imm32/size -<span id="L121" class="LineNr">121 </span> 52/push-edx -<span id="L122" class="LineNr">122 </span> <span class="subxS2Comment"># . . call</span> -<span id="L123" class="LineNr">123 </span> e8/call <a href='handle.subx.html#L47'>new</a>/disp32 -<span id="L124" class="LineNr">124 </span> <span class="subxS2Comment"># . . discard args</span> -<span id="L125" class="LineNr">125 </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="L126" class="LineNr">126 </span> <span class="subxComment"># check-ints-equal(handle->alloc_id, 0x34, msg)</span> -<span id="L127" class="LineNr">127 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L128" class="LineNr">128 </span> 68/push <span class="Constant">"F - <a href='handle.subx.html#L95'>test-new</a>: alloc id of handle"</span>/imm32 -<span id="L129" class="LineNr">129 </span> 68/push 0x34/imm32 -<span id="L130" class="LineNr">130 </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="L131" class="LineNr">131 </span> <span class="subxS2Comment"># . . call</span> -<span id="L132" class="LineNr">132 </span> e8/call <a href='../051test.subx.html#L24'>check-ints-equal</a>/disp32 -<span id="L133" class="LineNr">133 </span> <span class="subxS2Comment"># . . discard args</span> -<span id="L134" class="LineNr">134 </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="L135" class="LineNr">135 </span> <span class="subxComment"># check-ints-equal(*handle->address, 0x34, msg)</span> -<span id="L136" class="LineNr">136 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L137" class="LineNr">137 </span> 68/push <span class="Constant">"F - <a href='handle.subx.html#L95'>test-new</a>: alloc id of payload"</span>/imm32 -<span id="L138" class="LineNr">138 </span> 68/push 0x34/imm32 -<span id="L139" class="LineNr">139 </span> 8b/copy 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="L140" class="LineNr">140 </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="L141" class="LineNr">141 </span> <span class="subxS2Comment"># . . call</span> -<span id="L142" class="LineNr">142 </span> e8/call <a href='../051test.subx.html#L24'>check-ints-equal</a>/disp32 -<span id="L143" class="LineNr">143 </span> <span class="subxS2Comment"># . . discard args</span> -<span id="L144" class="LineNr">144 </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="L145" class="LineNr">145 </span> <span class="subxComment"># check-ints-equal(*Next-alloc-id, 0x35)</span> -<span id="L146" class="LineNr">146 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L147" class="LineNr">147 </span> 68/push <span class="Constant">"F - <a href='handle.subx.html#L95'>test-new</a>: next alloc id"</span>/imm32 -<span id="L148" class="LineNr">148 </span> 68/push 0x35/imm32 -<span id="L149" class="LineNr">149 </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='handle.subx.html#L425'>Next-alloc-id</a></span>/disp32 <span class="subxComment"># copy to *Next-alloc-id</span> -<span id="L150" class="LineNr">150 </span> <span class="subxS2Comment"># . . call</span> -<span id="L151" class="LineNr">151 </span> e8/call <a href='../051test.subx.html#L24'>check-ints-equal</a>/disp32 -<span id="L152" class="LineNr">152 </span> <span class="subxS2Comment"># . . discard args</span> -<span id="L153" class="LineNr">153 </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="L154" class="LineNr">154 </span> <span class="subxComment"># clean up</span> -<span id="L155" class="LineNr">155 </span> <span class="subxS1Comment"># . *Next-alloc-id = 1</span> -<span id="L156" class="LineNr">156 </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='handle.subx.html#L425'>Next-alloc-id</a></span>/disp32 1/imm32 <span class="subxComment"># copy to *Next-alloc-id</span> -<span id="L157" class="LineNr">157 </span> <span class="subxS1Comment"># . epilogue</span> -<span id="L158" class="LineNr">158 </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="L159" class="LineNr">159 </span> 5d/pop-to-ebp -<span id="L160" class="LineNr">160 </span> c3/return -<span id="L161" class="LineNr">161 </span> -<span id="L162" class="LineNr">162 </span><span class="subxMinorFunction">_pending-test-new-failure</span>: -<span id="L163" class="LineNr">163 </span> <span class="subxS1Comment"># . prologue</span> -<span id="L164" class="LineNr">164 </span> 55/push-ebp -<span id="L165" class="LineNr">165 </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="L166" class="LineNr">166 </span> <span class="subxS1Comment"># . *Next-alloc-id = 0x34</span> -<span id="L167" class="LineNr">167 </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='handle.subx.html#L425'>Next-alloc-id</a></span>/disp32 0x34/imm32 <span class="subxComment"># copy to *Next-alloc-id</span> -<span id="L168" class="LineNr">168 </span> <span class="subxComment"># define an allocation-descriptor with no space left</span> -<span id="L169" class="LineNr">169 </span> <span class="subxS1Comment"># . var ad/eax: allocation-descriptor = {0x10, 0x10}</span> -<span id="L170" class="LineNr">170 </span> 68/push 0x10/imm32/limit -<span id="L171" class="LineNr">171 </span> 68/push 0x10/imm32/curr -<span id="L172" class="LineNr">172 </span> 89/copy 3/mod/direct 0/rm32/eax <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 eax</span> -<span id="L173" class="LineNr">173 </span> <span class="subxS1Comment"># . var handle/ecx = {random, random}</span> -<span id="L174" class="LineNr">174 </span> 68/push 1234/imm32/address -<span id="L175" class="LineNr">175 </span> 68/push 5678/imm32/alloc-id -<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"># try to allocate</span> -<span id="L178" class="LineNr">178 </span> <span class="subxS1Comment"># . new(ad, 2, handle/ecx)</span> -<span id="L179" class="LineNr">179 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L180" class="LineNr">180 </span> 51/push-ecx -<span id="L181" class="LineNr">181 </span> 68/push 2/imm32/size -<span id="L182" class="LineNr">182 </span> 50/push-eax -<span id="L183" class="LineNr">183 </span> <span class="subxS2Comment"># . . call</span> -<span id="L184" class="LineNr">184 </span> e8/call <a href='handle.subx.html#L47'>new</a>/disp32 -<span id="L185" class="LineNr">185 </span> <span class="subxS2Comment"># . . discard args</span> -<span id="L186" class="LineNr">186 </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="L187" class="LineNr">187 </span> <span class="subxComment"># handle should be cleared</span> -<span id="L188" class="LineNr">188 </span> <span class="subxS1Comment"># . check-ints-equal(handle->alloc_id, 0, msg)</span> -<span id="L189" class="LineNr">189 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L190" class="LineNr">190 </span> 68/push <span class="Constant">"F - test-new-failure: alloc id of handle"</span>/imm32 -<span id="L191" class="LineNr">191 </span> 68/push 0/imm32 -<span id="L192" class="LineNr">192 </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="L193" class="LineNr">193 </span> <span class="subxS2Comment"># . . call</span> -<span id="L194" class="LineNr">194 </span> e8/call <a href='../051test.subx.html#L24'>check-ints-equal</a>/disp32 -<span id="L195" class="LineNr">195 </span> <span class="subxS2Comment"># . . discard args</span> -<span id="L196" class="LineNr">196 </span> 81 0/subop/add 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0xc/imm32 <span class="subxComment"># add to esp</span> -<span id="L197" class="LineNr">197 </span> <span class="subxS1Comment"># . check-ints-equal(handle->address, 0, msg)</span> -<span id="L198" class="LineNr">198 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L199" class="LineNr">199 </span> 68/push <span class="Constant">"F - test-new-failure: address of handle"</span>/imm32 -<span id="L200" class="LineNr">200 </span> 68/push 0/imm32 -<span id="L201" class="LineNr">201 </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="L202" class="LineNr">202 </span> <span class="subxS2Comment"># . . call</span> -<span id="L203" class="LineNr">203 </span> e8/call <a href='../051test.subx.html#L24'>check-ints-equal</a>/disp32 -<span id="L204" class="LineNr">204 </span> <span class="subxS2Comment"># . . discard args</span> -<span id="L205" class="LineNr">205 </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="L206" class="LineNr">206 </span> <span class="subxComment"># Next-alloc-id should be unmodified</span> -<span id="L207" class="LineNr">207 </span> <span class="subxS1Comment"># . check-ints-equal(*Next-alloc-id, 0x34)</span> -<span id="L208" class="LineNr">208 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L209" class="LineNr">209 </span> 68/push <span class="Constant">"F - test-new-failure: next alloc id"</span>/imm32 -<span id="L210" class="LineNr">210 </span> 68/push 0x34/imm32 -<span id="L211" class="LineNr">211 </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='handle.subx.html#L425'>Next-alloc-id</a></span>/disp32 <span class="subxComment"># copy to *Next-alloc-id</span> -<span id="L212" class="LineNr">212 </span> <span class="subxS2Comment"># . . call</span> -<span id="L213" class="LineNr">213 </span> e8/call <a href='../051test.subx.html#L24'>check-ints-equal</a>/disp32 -<span id="L214" class="LineNr">214 </span> <span class="subxS2Comment"># . . discard args</span> -<span id="L215" class="LineNr">215 </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="L216" class="LineNr">216 </span> <span class="subxComment"># clean up</span> -<span id="L217" class="LineNr">217 </span> <span class="subxS1Comment"># . *Next-alloc-id = 1</span> -<span id="L218" class="LineNr">218 </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='handle.subx.html#L425'>Next-alloc-id</a></span>/disp32 1/imm32 <span class="subxComment"># copy to *Next-alloc-id</span> -<span id="L219" class="LineNr">219 </span> <span class="subxS1Comment"># . epilogue</span> -<span id="L220" class="LineNr">220 </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="L221" class="LineNr">221 </span> 5d/pop-to-ebp -<span id="L222" class="LineNr">222 </span> c3/return -<span id="L223" class="LineNr">223 </span> -<span id="L224" class="LineNr">224 </span><span class="subxFunction">lookup</span>: <span class="subxComment"># h: (handle T) -> eax: (addr T)</span> -<span id="L225" class="LineNr">225 </span> <span class="subxS1Comment"># . prologue</span> -<span id="L226" class="LineNr">226 </span> 55/push-ebp -<span id="L227" class="LineNr">227 </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="L228" class="LineNr">228 </span> <span class="subxH1Comment"># - as a proof of concept for future inlining, uses no general-purpose registers besides the output (eax)</span> -<span id="L229" class="LineNr">229 </span> <span class="subxComment"># eax = handle</span> -<span id="L230" class="LineNr">230 </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="L231" class="LineNr">231 </span> <span class="subxH1Comment"># - inline {</span> -<span id="L232" class="LineNr">232 </span> <span class="subxComment"># push handle->alloc_id</span> -<span id="L233" class="LineNr">233 </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="L234" class="LineNr">234 </span> <span class="subxComment"># eax = handle->address (payload)</span> -<span id="L235" class="LineNr">235 </span> 8b/copy 1/mod/*+disp8 0/rm32/eax <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"># copy *(eax+4) to eax</span> -<span id="L236" class="LineNr">236 </span> <span class="subxComment"># push handle->address</span> -<span id="L237" class="LineNr">237 </span> 50/push-eax -<span id="L238" class="LineNr">238 </span> <span class="subxComment"># eax = payload->alloc_id</span> -<span id="L239" class="LineNr">239 </span> 8b/copy 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"># copy *eax to eax</span> -<span id="L240" class="LineNr">240 </span> <span class="subxComment"># if (eax != handle->alloc_id) abort</span> -<span id="L241" class="LineNr">241 </span> 39/compare 1/mod/*+disp8 4/rm32/sib 4/base/esp 4/index/none <span class="Normal"> . </span> 0/r32/eax 4/disp8 <span class="Normal"> . </span> <span class="subxComment"># compare *(esp+4) and eax</span> -<span id="L242" class="LineNr">242 </span> 75/jump-if-!= $lookup:abort/disp8 -<span id="L243" class="LineNr">243 </span> <span class="subxComment"># eax = pop handle->address</span> -<span id="L244" class="LineNr">244 </span> 58/pop-to-eax -<span id="L245" class="LineNr">245 </span> <span class="subxComment"># discard handle->alloc_id</span> -<span id="L246" class="LineNr">246 </span> 81 0/subop/add 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 4/imm32 <span class="subxComment"># add to esp</span> -<span id="L247" class="LineNr">247 </span> <span class="subxComment"># add 4</span> -<span id="L248" class="LineNr">248 </span> 05/add-to-eax 4/imm32 -<span id="L249" class="LineNr">249 </span> <span class="subxH1Comment"># - }</span> -<span id="L250" class="LineNr">250 </span> <span class="subxH1Comment"># - alternative consuming a second register {</span> -<span id="L251" class="LineNr">251 </span><span class="CommentedCode">#? # ecx = handle->alloc_id</span> -<span id="L252" class="LineNr">252 </span><span class="CommentedCode">#? 8b/copy 0/mod/indirect 0/rm32/eax . . . 1/r32/ecx . . # copy *eax to ecx</span> -<span id="L253" class="LineNr">253 </span><span class="CommentedCode">#? # eax = handle->address (payload)</span> -<span id="L254" class="LineNr">254 </span><span class="CommentedCode">#? 8b/copy 1/mod/*+disp8 0/rm32/eax . . . 0/r32/eax 4/disp8 . # copy *(eax+4) to eax</span> -<span id="L255" class="LineNr">255 </span><span class="CommentedCode">#? # if (ecx != *eax) abort</span> -<span id="L256" class="LineNr">256 </span><span class="CommentedCode">#? 39/compare 0/mod/indirect 0/rm32/eax . . . 1/r32/ecx . . # compare *eax and ecx</span> -<span id="L257" class="LineNr">257 </span><span class="CommentedCode">#? 75/jump-if-!= $lookup:abort/disp8</span> -<span id="L258" class="LineNr">258 </span><span class="CommentedCode">#? # add 4 to eax</span> -<span id="L259" class="LineNr">259 </span><span class="CommentedCode">#? 05/add-to-eax 4/imm32</span> -<span id="L260" class="LineNr">260 </span> <span class="subxH1Comment"># - }</span> -<span id="L261" class="LineNr">261 </span> <span class="subxS1Comment"># . epilogue</span> -<span id="L262" class="LineNr">262 </span> 89/copy 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 5/r32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy ebp to esp</span> -<span id="L263" class="LineNr">263 </span> 5d/pop-to-ebp -<span id="L264" class="LineNr">264 </span> c3/return -<span id="L265" class="LineNr">265 </span> -<span id="L266" class="LineNr">266 </span><span class="Constant">$lookup:abort</span>: -<span id="L267" class="LineNr">267 </span> <span class="subxS1Comment"># . _write(2/stderr, msg)</span> -<span id="L268" class="LineNr">268 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L269" class="LineNr">269 </span> 68/push <span class="Constant">"lookup failed\n"</span>/imm32 -<span id="L270" class="LineNr">270 </span> 68/push 2/imm32/stderr -<span id="L271" class="LineNr">271 </span> <span class="subxS2Comment"># . . call</span> -<span id="L272" class="LineNr">272 </span> e8/call <a href='../050_write.subx.html#L14'>_write</a>/disp32 -<span id="L273" class="LineNr">273 </span> <span class="subxS2Comment"># . . discard args</span> -<span id="L274" class="LineNr">274 </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="L275" class="LineNr">275 </span> <span class="subxS1Comment"># . syscall(exit, 1)</span> -<span id="L276" class="LineNr">276 </span> bb/copy-to-ebx 1/imm32/exit-status -<span id="L277" class="LineNr">277 </span> b8/copy-to-eax 1/imm32/exit -<span id="L278" class="LineNr">278 </span> cd/syscall 0x80/imm8 -<span id="L279" class="LineNr">279 </span> -<span id="L280" class="LineNr">280 </span><span class="subxTest">test-lookup-success</span>: -<span id="L281" class="LineNr">281 </span> <span class="subxS1Comment"># . prologue</span> -<span id="L282" class="LineNr">282 </span> 55/push-ebp -<span id="L283" class="LineNr">283 </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="L284" class="LineNr">284 </span> <span class="subxS1Comment"># . save registers</span> -<span id="L285" class="LineNr">285 </span> <span class="subxComment"># var heap/ebx: allocation-descriptor</span> -<span id="L286" class="LineNr">286 </span> 68/push 0/imm32/limit -<span id="L287" class="LineNr">287 </span> 68/push 0/imm32/curr -<span id="L288" class="LineNr">288 </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="L289" class="LineNr">289 </span> <span class="subxComment"># heap = new-segment(512)</span> -<span id="L290" class="LineNr">290 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L291" class="LineNr">291 </span> 53/push-ebx -<span id="L292" class="LineNr">292 </span> 68/push 0x200/imm32 -<span id="L293" class="LineNr">293 </span> <span class="subxS2Comment"># . . call</span> -<span id="L294" class="LineNr">294 </span> e8/call <a href='../053new-segment.subx.html#L41'>new-segment</a>/disp32 -<span id="L295" class="LineNr">295 </span> <span class="subxS2Comment"># . . discard args</span> -<span id="L296" class="LineNr">296 </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="L297" class="LineNr">297 </span> <span class="subxComment"># var handle/ecx: handle</span> -<span id="L298" class="LineNr">298 </span> 68/push 0/imm32/address -<span id="L299" class="LineNr">299 </span> 68/push 0/imm32/alloc-id -<span id="L300" class="LineNr">300 </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="L301" class="LineNr">301 </span> <span class="subxComment"># var old_top/edx = heap->curr</span> -<span id="L302" class="LineNr">302 </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="L303" class="LineNr">303 </span> <span class="subxComment"># new(heap, 2, handle)</span> -<span id="L304" class="LineNr">304 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L305" class="LineNr">305 </span> 51/push-ecx -<span id="L306" class="LineNr">306 </span> 68/push 2/imm32/size -<span id="L307" class="LineNr">307 </span> 53/push-ebx -<span id="L308" class="LineNr">308 </span> <span class="subxS2Comment"># . . call</span> -<span id="L309" class="LineNr">309 </span> e8/call <a href='handle.subx.html#L47'>new</a>/disp32 -<span id="L310" class="LineNr">310 </span> <span class="subxS2Comment"># . . discard args</span> -<span id="L311" class="LineNr">311 </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="L312" class="LineNr">312 </span> <span class="subxComment"># eax = lookup(handle)</span> -<span id="L313" class="LineNr">313 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L314" class="LineNr">314 </span> 51/push-ecx -<span id="L315" class="LineNr">315 </span> <span class="subxS2Comment"># . . call</span> -<span id="L316" class="LineNr">316 </span> e8/call <a href='handle.subx.html#L224'>lookup</a>/disp32 -<span id="L317" class="LineNr">317 </span> <span class="subxS2Comment"># . . discard args</span> -<span id="L318" class="LineNr">318 </span> 81 0/subop/add 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 4/imm32 <span class="subxComment"># add to esp</span> -<span id="L319" class="LineNr">319 </span> <span class="subxComment"># eax contains old top of heap, except skipping the alloc id in the payload</span> -<span id="L320" class="LineNr">320 </span> <span class="subxS1Comment"># . check-ints-equal(eax, old_top+4, msg)</span> -<span id="L321" class="LineNr">321 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L322" class="LineNr">322 </span> 68/push <span class="Constant">"F - test-lookup-success"</span>/imm32 -<span id="L323" class="LineNr">323 </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="L324" class="LineNr">324 </span> 52/push-edx -<span id="L325" class="LineNr">325 </span> 50/push-eax -<span id="L326" class="LineNr">326 </span> <span class="subxS2Comment"># . . call</span> -<span id="L327" class="LineNr">327 </span> e8/call <a href='../051test.subx.html#L24'>check-ints-equal</a>/disp32 -<span id="L328" class="LineNr">328 </span> <span class="subxS2Comment"># . . discard args</span> -<span id="L329" class="LineNr">329 </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="L330" class="LineNr">330 </span> <span class="subxComment"># clean up</span> -<span id="L331" class="LineNr">331 </span> <span class="subxS1Comment"># . *Next-alloc-id = 1</span> -<span id="L332" class="LineNr">332 </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='handle.subx.html#L425'>Next-alloc-id</a></span>/disp32 1/imm32 <span class="subxComment"># copy to *Next-alloc-id</span> -<span id="L333" class="LineNr">333 </span> <span class="subxComment"># write(2/stderr, "lookup succeeded\n")</span> -<span id="L334" class="LineNr">334 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L335" class="LineNr">335 </span> 68/push <span class="Constant">"lookup succeeded\n"</span>/imm32 -<span id="L336" class="LineNr">336 </span> 68/push 2/imm32/stderr -<span id="L337" class="LineNr">337 </span> <span class="subxS2Comment"># . . call</span> -<span id="L338" class="LineNr">338 </span> e8/call <a href='../057write.subx.html#L24'>write</a>/disp32 -<span id="L339" class="LineNr">339 </span> <span class="subxS2Comment"># . . discard args</span> -<span id="L340" class="LineNr">340 </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="L341" class="LineNr">341 </span> <span class="subxS1Comment"># . restore registers</span> -<span id="L342" class="LineNr">342 </span> 5a/pop-to-edx -<span id="L343" class="LineNr">343 </span> 59/pop-to-ecx -<span id="L344" class="LineNr">344 </span> <span class="subxS1Comment"># . epilogue</span> -<span id="L345" class="LineNr">345 </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="L346" class="LineNr">346 </span> 5d/pop-to-ebp -<span id="L347" class="LineNr">347 </span> c3/return -<span id="L348" class="LineNr">348 </span> -<span id="L349" class="LineNr">349 </span><span class="subxTest">test-lookup-failure</span>: -<span id="L350" class="LineNr">350 </span> <span class="subxS1Comment"># . prologue</span> -<span id="L351" class="LineNr">351 </span> 55/push-ebp -<span id="L352" class="LineNr">352 </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="L353" class="LineNr">353 </span> <span class="subxComment"># var heap/esi: allocation-descriptor</span> -<span id="L354" class="LineNr">354 </span> 68/push 0/imm32/limit -<span id="L355" class="LineNr">355 </span> 68/push 0/imm32/curr -<span id="L356" class="LineNr">356 </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="L357" class="LineNr">357 </span> <span class="subxComment"># heap = new-segment(512)</span> -<span id="L358" class="LineNr">358 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L359" class="LineNr">359 </span> 56/push-esi -<span id="L360" class="LineNr">360 </span> 68/push 0x200/imm32 -<span id="L361" class="LineNr">361 </span> <span class="subxS2Comment"># . . call</span> -<span id="L362" class="LineNr">362 </span> e8/call <a href='../053new-segment.subx.html#L41'>new-segment</a>/disp32 -<span id="L363" class="LineNr">363 </span> <span class="subxS2Comment"># . . discard args</span> -<span id="L364" class="LineNr">364 </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="L365" class="LineNr">365 </span> <span class="subxComment"># var h1/ecx: handle</span> -<span id="L366" class="LineNr">366 </span> 68/push 0/imm32/address -<span id="L367" class="LineNr">367 </span> 68/push 0/imm32/alloc-id -<span id="L368" class="LineNr">368 </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="L369" class="LineNr">369 </span> <span class="subxComment"># var old_top/ebx = heap->curr</span> -<span id="L370" class="LineNr">370 </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="L371" class="LineNr">371 </span> <span class="subxComment"># first allocation, to h1</span> -<span id="L372" class="LineNr">372 </span> <span class="subxS1Comment"># . new(heap, 2, h1)</span> -<span id="L373" class="LineNr">373 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L374" class="LineNr">374 </span> 51/push-ecx -<span id="L375" class="LineNr">375 </span> 68/push 2/imm32/size -<span id="L376" class="LineNr">376 </span> 56/push-esi -<span id="L377" class="LineNr">377 </span> <span class="subxS2Comment"># . . call</span> -<span id="L378" class="LineNr">378 </span> e8/call <a href='handle.subx.html#L47'>new</a>/disp32 -<span id="L379" class="LineNr">379 </span> <span class="subxS2Comment"># . . discard args</span> -<span id="L380" class="LineNr">380 </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="L381" class="LineNr">381 </span> <span class="subxComment"># reset heap->curr to mimic reclamation</span> -<span id="L382" class="LineNr">382 </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="L383" class="LineNr">383 </span> <span class="subxComment"># second allocation that returns the same address as the first</span> -<span id="L384" class="LineNr">384 </span> <span class="subxComment"># var h2/edx: handle</span> -<span id="L385" class="LineNr">385 </span> 68/push 0/imm32/address -<span id="L386" class="LineNr">386 </span> 68/push 0/imm32/alloc-id -<span id="L387" class="LineNr">387 </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="L388" class="LineNr">388 </span> <span class="subxS1Comment"># . new(heap, 2, h2)</span> -<span id="L389" class="LineNr">389 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L390" class="LineNr">390 </span> 52/push-edx -<span id="L391" class="LineNr">391 </span> 68/push 2/imm32/size -<span id="L392" class="LineNr">392 </span> 56/push-esi -<span id="L393" class="LineNr">393 </span> <span class="subxS2Comment"># . . call</span> -<span id="L394" class="LineNr">394 </span> e8/call <a href='handle.subx.html#L47'>new</a>/disp32 -<span id="L395" class="LineNr">395 </span> <span class="subxS2Comment"># . . discard args</span> -<span id="L396" class="LineNr">396 </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="L397" class="LineNr">397 </span> <span class="subxComment"># check-ints-equal(h1->address, h2->address, msg)</span> -<span id="L398" class="LineNr">398 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L399" class="LineNr">399 </span> 68/push <span class="Constant">"F - test-lookup-failure"</span>/imm32 -<span id="L400" class="LineNr">400 </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="L401" class="LineNr">401 </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="L402" class="LineNr">402 </span> <span class="subxS2Comment"># . . call</span> -<span id="L403" class="LineNr">403 </span> e8/call <a href='../051test.subx.html#L24'>check-ints-equal</a>/disp32 -<span id="L404" class="LineNr">404 </span> <span class="subxS2Comment"># . . discard args</span> -<span id="L405" class="LineNr">405 </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="L406" class="LineNr">406 </span> <span class="subxComment"># lookup(h1) should crash</span> -<span id="L407" class="LineNr">407 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L408" class="LineNr">408 </span> 51/push-ecx -<span id="L409" class="LineNr">409 </span> <span class="subxS2Comment"># . . call</span> -<span id="L410" class="LineNr">410 </span> e8/call <a href='handle.subx.html#L224'>lookup</a>/disp32 -<span id="L411" class="LineNr">411 </span> <span class="subxComment"># should never get past this point</span> -<span id="L412" class="LineNr">412 </span> <span class="subxS2Comment"># . . discard args</span> -<span id="L413" class="LineNr">413 </span> 81 0/subop/add 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 4/imm32 <span class="subxComment"># add to esp</span> -<span id="L414" class="LineNr">414 </span> <span class="subxComment"># clean up</span> -<span id="L415" class="LineNr">415 </span> <span class="subxS1Comment"># . *Next-alloc-id = 1</span> -<span id="L416" class="LineNr">416 </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='handle.subx.html#L425'>Next-alloc-id</a></span>/disp32 1/imm32 <span class="subxComment"># copy to *Next-alloc-id</span> -<span id="L417" class="LineNr">417 </span> <span class="subxS1Comment"># . epilogue</span> -<span id="L418" class="LineNr">418 </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="L419" class="LineNr">419 </span> 5d/pop-to-ebp -<span id="L420" class="LineNr">420 </span> c3/return -<span id="L421" class="LineNr">421 </span> -<span id="L422" class="LineNr">422 </span>== data -<span id="L423" class="LineNr">423 </span> -<span id="L424" class="LineNr">424 </span><span class="subxComment"># Monotonically increasing counter for calls to 'new'</span> -<span id="L425" class="LineNr">425 </span><span class="SpecialChar">Next-alloc-id</span>: <span class="subxComment"># int</span> -<span id="L426" class="LineNr">426 </span> 1/imm32 -<span id="L427" class="LineNr">427 </span> -<span id="L428" class="LineNr">428 </span><span class="subxS2Comment"># . . vim:nowrap:textwidth=0</span> -</pre> -</body> -</html> -<!-- vim: set foldmethod=manual : --> |