4900

Finally really fix the CI failure of commit 4894. This is a remainder to forget my knowledge of stack addresses in the SubX VM when writing SubX programs. Otherwise my programs will work in the VM but not natively. The only assumptions a SubX program should make about its segment addresses are what's encoded in the ELF binary. Thanks to https://en.wikipedia.org/wiki/Address_space_layout_randomization, it can't know anything else.
author: Kartik Agaram <vc@akkartik.com> 2018-12-30 21:01:35 -0800
committer: Kartik Agaram <vc@akkartik.com> 2018-12-30 21:01:35 -0800
commit: 1ffb27a045c63217336e2c926058360e9521afc9 (patch)
tree: 353ee70f7b29e00a9b1a7a55f396c611ffd53181
parent: 901ae474300d70bcc00e7e0b420ca87c8cbf6f55 (diff)
download: mu-1ffb27a045c63217336e2c926058360e9521afc9.tar.gz
3 files changed, 381 insertions, 392 deletions
diff --git a/html/subx/apps/handle.subx.html b/html/subx/apps/handle.subx.html
index 3b846c48..f0d9d792 100644
--- a/html/subx/apps/handle.subx.html
+++ b/html/subx/apps/handle.subx.html
@@ -23,7 +23,6 @@ a { color:inherit; }
 .subxTest { color: #5f8700; }
 .Constant { color: #008787; }
 .Normal { color: #000000; background-color: #c6c6c6; padding-bottom: 1px; }
-.subxH1Comment { color: #005faf; text-decoration: underline; }
 -->
 </style>
 
@@ -78,358 +77,353 @@ if ('onhashchange' in window) {
 <span id="L17" class="LineNr"> 17 </span><span class="subxComment">#   $ ./subx run apps/handle</span>
 <span id="L18" class="LineNr"> 18 </span><span class="subxComment"># Expected result is a hard abort:</span>
 <span id="L19" class="LineNr"> 19 </span><span class="subxComment">#   ........lookup failed</span>
-<span id="L20" class="LineNr"> 20 </span>
-<span id="L21" class="LineNr"> 21 </span>== code
-<span id="L22" class="LineNr"> 22 </span><span class="subxComment">#   instruction                     effective address                                                   register    displacement    immediate</span>
-<span id="L23" class="LineNr"> 23 </span><span class="subxS1Comment"># . op          subop               mod             rm32          base        index         scale       r32</span>
-<span id="L24" class="LineNr"> 24 </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="L25" class="LineNr"> 25 </span>
-<span id="L26" class="LineNr"> 26 </span><span class="subxComment"># main:</span>
-<span id="L27" class="LineNr"> 27 </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="L28" class="LineNr"> 28 </span>    <span class="subxComment"># syscall(exit, Num-test-failures)</span>
-<span id="L29" class="LineNr"> 29 </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="L30" class="LineNr"> 30 </span>    b8/copy-to-EAX  1/imm32/exit
-<span id="L31" class="LineNr"> 31 </span>    cd/syscall  0x80/imm8
-<span id="L32" class="LineNr"> 32 </span>
-<span id="L33" class="LineNr"> 33 </span><span class="subxFunction">new</span>:  <span class="subxComment"># ad : (address allocation-descriptor), n : int, out : (address handle)</span>
-<span id="L34" class="LineNr"> 34 </span>    <span class="subxS1Comment"># . prolog</span>
-<span id="L35" class="LineNr"> 35 </span>    55/push-EBP
-<span id="L36" class="LineNr"> 36 </span>    89/copy                         3/mod/direct    5/rm32/EBP   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>          4/r32/ESP  <span class="Normal"> . </span>             <span class="Normal"> . </span>                <span class="subxComment"># copy ESP to EBP</span>
-<span id="L37" class="LineNr"> 37 </span>    <span class="subxS1Comment"># . save registers</span>
-<span id="L38" class="LineNr"> 38 </span>    50/push-EAX
-<span id="L39" class="LineNr"> 39 </span>    51/push-ECX
-<span id="L40" class="LineNr"> 40 </span>    52/push-EDX
-<span id="L41" class="LineNr"> 41 </span>    <span class="subxComment"># ECX = n+4</span>
-<span id="L42" class="LineNr"> 42 </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="L43" class="LineNr"> 43 </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="L44" class="LineNr"> 44 </span>    <span class="subxComment"># EAX = allocate(ad, ECX)</span>
-<span id="L45" class="LineNr"> 45 </span>    <span class="subxS2Comment"># . . push args</span>
-<span id="L46" class="LineNr"> 46 </span>    51/push-ECX
-<span id="L47" class="LineNr"> 47 </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="L48" class="LineNr"> 48 </span>    <span class="subxS2Comment"># . . call</span>
-<span id="L49" class="LineNr"> 49 </span>    e8/call  <a href='../066allocate.subx.html#L41'>allocate</a>/disp32
-<span id="L50" class="LineNr"> 50 </span>    <span class="subxS2Comment"># . . discard args</span>
-<span id="L51" class="LineNr"> 51 </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="L52" class="LineNr"> 52 </span>    <span class="subxComment"># EDX = out</span>
-<span id="L53" class="LineNr"> 53 </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="L54" class="LineNr"> 54 </span>    <span class="subxComment"># out-&gt;address = EAX</span>
-<span id="L55" class="LineNr"> 55 </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="L56" class="LineNr"> 56 </span>    <span class="subxComment"># if (EAX == 0) out-&gt;alloc_id = 0, return</span>
-<span id="L57" class="LineNr"> 57 </span>    81          7/subop/compare     3/mod/direct    0/rm32/EAX   <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 EAX</span>
-<span id="L58" class="LineNr"> 58 </span>    75/jump-if-not-equal  $new:continue/disp8
-<span id="L59" class="LineNr"> 59 </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="L60" class="LineNr"> 60 </span>    eb/jump  $new:end/disp8
-<span id="L61" class="LineNr"> 61 </span><span class="Constant">$new:continue</span>:
-<span id="L62" class="LineNr"> 62 </span>    <span class="subxComment"># otherwise:</span>
-<span id="L63" class="LineNr"> 63 </span>    <span class="subxComment"># ECX = *Next-alloc-id</span>
-<span id="L64" class="LineNr"> 64 </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#L368'>Next-alloc-id</a></span>/disp32              <span class="subxComment"># copy *Next-alloc-id to ECX</span>
-<span id="L65" class="LineNr"> 65 </span>    <span class="subxComment"># *EAX = *Next-alloc-id/ECX</span>
-<span id="L66" class="LineNr"> 66 </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="L67" class="LineNr"> 67 </span>    <span class="subxComment"># out-&gt;alloc_id = *Next-alloc-id</span>
-<span id="L68" class="LineNr"> 68 </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="L69" class="LineNr"> 69 </span>    <span class="subxComment"># increment *Next-alloc-id</span>
-<span id="L70" class="LineNr"> 70 </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#L368'>Next-alloc-id</a></span>/disp32              <span class="subxComment"># increment *Next-alloc-id</span>
-<span id="L71" class="LineNr"> 71 </span><span class="Constant">$new:end</span>:
-<span id="L72" class="LineNr"> 72 </span>    <span class="subxS1Comment"># . restore registers</span>
-<span id="L73" class="LineNr"> 73 </span>    5a/pop-to-EDX
-<span id="L74" class="LineNr"> 74 </span>    59/pop-to-ECX
-<span id="L75" class="LineNr"> 75 </span>    58/pop-to-EAX
-<span id="L76" class="LineNr"> 76 </span>    <span class="subxS1Comment"># . epilog</span>
-<span id="L77" class="LineNr"> 77 </span>    89/copy                         3/mod/direct    4/rm32/ESP   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>          5/r32/EBP  <span class="Normal"> . </span>             <span class="Normal"> . </span>                <span class="subxComment"># copy EBP to ESP</span>
-<span id="L78" class="LineNr"> 78 </span>    5d/pop-to-EBP
-<span id="L79" class="LineNr"> 79 </span>    c3/return
-<span id="L80" class="LineNr"> 80 </span>
-<span id="L81" class="LineNr"> 81 </span><span class="subxTest">test-new</span>:  <span class="subxH1Comment"># - this test uses the bottom of the stack segment as scratch space</span>
-<span id="L82" class="LineNr"> 82 </span>    <span class="subxS1Comment"># . prolog</span>
-<span id="L83" class="LineNr"> 83 </span>    55/push-EBP
-<span id="L84" class="LineNr"> 84 </span>    89/copy                         3/mod/direct    5/rm32/EBP   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>          4/r32/ESP  <span class="Normal"> . </span>             <span class="Normal"> . </span>                <span class="subxComment"># copy ESP to EBP</span>
-<span id="L85" class="LineNr"> 85 </span>    <span class="subxComment"># *Next-alloc-id = 0x34</span>
-<span id="L86" class="LineNr"> 86 </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#L368'>Next-alloc-id</a></span>/disp32  0x34/imm32        <span class="subxComment"># copy to *Next-alloc-id</span>
-<span id="L87" class="LineNr"> 87 </span>    <span class="subxComment"># var ad/EAX : (address allocation-descriptor) = {0x0b000000, 0x0b00000a}</span>
-<span id="L88" class="LineNr"> 88 </span>    68/push  0x0b00000a/imm32/limit
-<span id="L89" class="LineNr"> 89 </span>    68/push  0x0b000000/imm32/curr
-<span id="L90" class="LineNr"> 90 </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="L91" class="LineNr"> 91 </span>    <span class="subxComment"># var handle/ECX = {0, 0}</span>
-<span id="L92" class="LineNr"> 92 </span>    68/push  0/imm32/address
-<span id="L93" class="LineNr"> 93 </span>    68/push  0/imm32/alloc-id
-<span id="L94" class="LineNr"> 94 </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="L95" class="LineNr"> 95 </span>    <span class="subxComment"># new(ad, 2, handle/ECX)</span>
-<span id="L96" class="LineNr"> 96 </span>    <span class="subxS2Comment"># . . push args</span>
-<span id="L97" class="LineNr"> 97 </span>    51/push-ECX
-<span id="L98" class="LineNr"> 98 </span>    68/push  2/imm32/size
-<span id="L99" class="LineNr"> 99 </span>    50/push-EAX
-<span id="L100" class="LineNr">100 </span>    <span class="subxS2Comment"># . . call</span>
-<span id="L101" class="LineNr">101 </span>    e8/call  <a href='handle.subx.html#L33'>new</a>/disp32
-<span id="L102" class="LineNr">102 </span>    <span class="subxS2Comment"># . . discard args</span>
-<span id="L103" class="LineNr">103 </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="L104" class="LineNr">104 </span>    <span class="subxComment"># check-ints-equal(handle-&gt;alloc_id, 0x34, msg)</span>
-<span id="L105" class="LineNr">105 </span>    <span class="subxS2Comment"># . . push args</span>
-<span id="L106" class="LineNr">106 </span>    68/push  <span class="Constant">&quot;F - <a href='handle.subx.html#L81'>test-new</a>: alloc id of handle&quot;</span>/imm32
-<span id="L107" class="LineNr">107 </span>    68/push  0x34/imm32
-<span id="L108" class="LineNr">108 </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="L109" class="LineNr">109 </span>    <span class="subxS2Comment"># . . call</span>
-<span id="L110" class="LineNr">110 </span>    e8/call  <a href='../051test.subx.html#L24'>check-ints-equal</a>/disp32
-<span id="L111" class="LineNr">111 </span>    <span class="subxS2Comment"># . . discard args</span>
-<span id="L112" class="LineNr">112 </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="L113" class="LineNr">113 </span>    <span class="subxComment"># check-ints-equal(handle-&gt;address, 0x0b000000, msg)</span>
-<span id="L114" class="LineNr">114 </span>    <span class="subxS2Comment"># . . push args</span>
-<span id="L115" class="LineNr">115 </span>    68/push  <span class="Constant">&quot;F - <a href='handle.subx.html#L81'>test-new</a>: address of handle&quot;</span>/imm32
-<span id="L116" class="LineNr">116 </span>    68/push  0x0b000000/imm32
-<span id="L117" class="LineNr">117 </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="L118" class="LineNr">118 </span>    <span class="subxS2Comment"># . . call</span>
-<span id="L119" class="LineNr">119 </span>    e8/call  <a href='../051test.subx.html#L24'>check-ints-equal</a>/disp32
-<span id="L120" class="LineNr">120 </span>    <span class="subxS2Comment"># . . discard args</span>
-<span id="L121" class="LineNr">121 </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="L122" class="LineNr">122 </span>    <span class="subxComment"># check-ints-equal(*handle-&gt;address, 0x34, msg)</span>
-<span id="L123" class="LineNr">123 </span>    <span class="subxS2Comment"># . . push args</span>
-<span id="L124" class="LineNr">124 </span>    68/push  <span class="Constant">&quot;F - <a href='handle.subx.html#L81'>test-new</a>: alloc id of payload&quot;</span>/imm32
-<span id="L125" class="LineNr">125 </span>    68/push  0x34/imm32
-<span id="L126" class="LineNr">126 </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="L127" class="LineNr">127 </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="L128" class="LineNr">128 </span>    <span class="subxS2Comment"># . . call</span>
-<span id="L129" class="LineNr">129 </span>    e8/call  <a href='../051test.subx.html#L24'>check-ints-equal</a>/disp32
-<span id="L130" class="LineNr">130 </span>    <span class="subxS2Comment"># . . discard args</span>
-<span id="L131" class="LineNr">131 </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="L132" class="LineNr">132 </span>    <span class="subxComment"># check-ints-equal(*Next-alloc-id, 0x35)</span>
-<span id="L133" class="LineNr">133 </span>    <span class="subxS2Comment"># . . push args</span>
-<span id="L134" class="LineNr">134 </span>    68/push  <span class="Constant">&quot;F - <a href='handle.subx.html#L81'>test-new</a>: next alloc id&quot;</span>/imm32
-<span id="L135" class="LineNr">135 </span>    68/push  0x35/imm32
-<span id="L136" class="LineNr">136 </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#L368'>Next-alloc-id</a></span>/disp32              <span class="subxComment"># copy to *Next-alloc-id</span>
-<span id="L137" class="LineNr">137 </span>    <span class="subxS2Comment"># . . call</span>
-<span id="L138" class="LineNr">138 </span>    e8/call  <a href='../051test.subx.html#L24'>check-ints-equal</a>/disp32
-<span id="L139" class="LineNr">139 </span>    <span class="subxS2Comment"># . . discard args</span>
-<span id="L140" class="LineNr">140 </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="L141" class="LineNr">141 </span>    <span class="subxComment"># clean up</span>
-<span id="L142" class="LineNr">142 </span>    <span class="subxS1Comment"># . *Next-alloc-id = 1</span>
-<span id="L143" class="LineNr">143 </span>    c7          0/subop/copy        0/mod/direct    0/rm32/EAX   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>         <span class="Normal"> . </span>              1/imm32           <span class="subxComment"># copy to *EAX</span>
-<span id="L144" class="LineNr">144 </span>    <span class="subxS1Comment"># . epilog</span>
-<span id="L145" class="LineNr">145 </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="L146" class="LineNr">146 </span>    5d/pop-to-EBP
-<span id="L147" class="LineNr">147 </span>    c3/return
-<span id="L148" class="LineNr">148 </span>
-<span id="L149" class="LineNr">149 </span><span class="subxTest">test-new-failure</span>:
-<span id="L150" class="LineNr">150 </span>    <span class="subxS1Comment"># . prolog</span>
-<span id="L151" class="LineNr">151 </span>    55/push-EBP
-<span id="L152" class="LineNr">152 </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="L153" class="LineNr">153 </span>    <span class="subxS1Comment"># . *Next-alloc-id = 0x34</span>
-<span id="L154" class="LineNr">154 </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#L368'>Next-alloc-id</a></span>/disp32  0x34/imm32  <span class="subxComment"># copy to *Next-alloc-id</span>
-<span id="L155" class="LineNr">155 </span>    <span class="subxComment"># define an allocation-descriptor with no space left</span>
-<span id="L156" class="LineNr">156 </span>    <span class="subxS1Comment"># . var ad/EAX : (address allocation-descriptor) = {0x10, 0x10}</span>
-<span id="L157" class="LineNr">157 </span>    68/push  0x10/imm32/limit
-<span id="L158" class="LineNr">158 </span>    68/push  0x10/imm32/curr
-<span id="L159" class="LineNr">159 </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="L160" class="LineNr">160 </span>    <span class="subxS1Comment"># . var handle/ECX = {random, random}</span>
-<span id="L161" class="LineNr">161 </span>    68/push  1234/imm32/address
-<span id="L162" class="LineNr">162 </span>    68/push  5678/imm32/alloc-id
-<span id="L163" class="LineNr">163 </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="L164" class="LineNr">164 </span>    <span class="subxComment"># try to allocate</span>
-<span id="L165" class="LineNr">165 </span>    <span class="subxS1Comment"># . new(ad, 2, handle/ECX)</span>
-<span id="L166" class="LineNr">166 </span>    <span class="subxS2Comment"># . . push args</span>
-<span id="L167" class="LineNr">167 </span>    51/push-ECX
-<span id="L168" class="LineNr">168 </span>    68/push  2/imm32/size
-<span id="L169" class="LineNr">169 </span>    50/push-EAX
-<span id="L170" class="LineNr">170 </span>    <span class="subxS2Comment"># . . call</span>
-<span id="L171" class="LineNr">171 </span>    e8/call  <a href='handle.subx.html#L33'>new</a>/disp32
-<span id="L172" class="LineNr">172 </span>    <span class="subxS2Comment"># . . discard args</span>
-<span id="L173" class="LineNr">173 </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="L174" class="LineNr">174 </span>    <span class="subxComment"># handle should be cleared</span>
-<span id="L175" class="LineNr">175 </span>    <span class="subxS1Comment"># . check-ints-equal(handle-&gt;alloc_id, 0, msg)</span>
-<span id="L176" class="LineNr">176 </span>    <span class="subxS2Comment"># . . push args</span>
-<span id="L177" class="LineNr">177 </span>    68/push  <span class="Constant">&quot;F - <a href='handle.subx.html#L149'>test-new-failure</a>: alloc id of handle&quot;</span>/imm32
-<span id="L178" class="LineNr">178 </span>    68/push  0/imm32
-<span id="L179" class="LineNr">179 </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="L180" class="LineNr">180 </span>    <span class="subxS2Comment"># . . call</span>
-<span id="L181" class="LineNr">181 </span>    e8/call  <a href='../051test.subx.html#L24'>check-ints-equal</a>/disp32
-<span id="L182" class="LineNr">182 </span>    <span class="subxS2Comment"># . . discard args</span>
-<span id="L183" class="LineNr">183 </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="L184" class="LineNr">184 </span>    <span class="subxS1Comment"># . check-ints-equal(handle-&gt;address, 0, msg)</span>
-<span id="L185" class="LineNr">185 </span>    <span class="subxS2Comment"># . . push args</span>
-<span id="L186" class="LineNr">186 </span>    68/push  <span class="Constant">&quot;F - <a href='handle.subx.html#L149'>test-new-failure</a>: address of handle&quot;</span>/imm32
-<span id="L187" class="LineNr">187 </span>    68/push  0/imm32
-<span id="L188" class="LineNr">188 </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="L189" class="LineNr">189 </span>    <span class="subxS2Comment"># . . call</span>
-<span id="L190" class="LineNr">190 </span>    e8/call  <a href='../051test.subx.html#L24'>check-ints-equal</a>/disp32
-<span id="L191" class="LineNr">191 </span>    <span class="subxS2Comment"># . . discard args</span>
-<span id="L192" class="LineNr">192 </span>    81          0/subop/add         3/mod/direct    4/rm32/ESP   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>         <span class="Normal"> . </span>              0xc/imm32         <span class="subxComment"># add to ESP</span>
-<span id="L193" class="LineNr">193 </span>    <span class="subxComment"># Next-alloc-id should be unmodified</span>
-<span id="L194" class="LineNr">194 </span>    <span class="subxS1Comment"># . check-ints-equal(*Next-alloc-id, 0x34)</span>
-<span id="L195" class="LineNr">195 </span>    <span class="subxS2Comment"># . . push args</span>
-<span id="L196" class="LineNr">196 </span>    68/push  <span class="Constant">&quot;F - <a href='handle.subx.html#L149'>test-new-failure</a>: next alloc id&quot;</span>/imm32
-<span id="L197" class="LineNr">197 </span>    68/push  0x34/imm32
-<span id="L198" class="LineNr">198 </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#L368'>Next-alloc-id</a></span>/disp32              <span class="subxComment"># copy to *Next-alloc-id</span>
-<span id="L199" class="LineNr">199 </span>    <span class="subxS2Comment"># . . call</span>
-<span id="L200" class="LineNr">200 </span>    e8/call  <a href='../051test.subx.html#L24'>check-ints-equal</a>/disp32
-<span id="L201" class="LineNr">201 </span>    <span class="subxS2Comment"># . . discard args</span>
-<span id="L202" class="LineNr">202 </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="L203" class="LineNr">203 </span>    <span class="subxComment"># clean up</span>
-<span id="L204" class="LineNr">204 </span>    <span class="subxS1Comment"># . *Next-alloc-id = 1</span>
-<span id="L205" class="LineNr">205 </span>    c7          0/subop/copy        0/mod/direct    0/rm32/EAX   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>         <span class="Normal"> . </span>              1/imm32           <span class="subxComment"># copy to *EAX</span>
-<span id="L206" class="LineNr">206 </span>    <span class="subxS1Comment"># . epilog</span>
-<span id="L207" class="LineNr">207 </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="L208" class="LineNr">208 </span>    5d/pop-to-EBP
-<span id="L209" class="LineNr">209 </span>    c3/return
-<span id="L210" class="LineNr">210 </span>
-<span id="L211" class="LineNr">211 </span><span class="subxFunction">lookup</span>:  <span class="subxComment"># h : (handle T) -&gt; EAX : (address T)</span>
-<span id="L212" class="LineNr">212 </span>    <span class="subxS1Comment"># . prolog</span>
-<span id="L213" class="LineNr">213 </span>    55/push-EBP
-<span id="L214" class="LineNr">214 </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="L215" class="LineNr">215 </span>    <span class="subxS1Comment"># . save registers</span>
-<span id="L216" class="LineNr">216 </span>    51/push-ECX
-<span id="L217" class="LineNr">217 </span>    52/push-EDX
-<span id="L218" class="LineNr">218 </span>    <span class="subxComment"># ECX = handle</span>
-<span id="L219" class="LineNr">219 </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="L220" class="LineNr">220 </span>    <span class="subxComment"># EDX = handle-&gt;alloc_id</span>
-<span id="L221" class="LineNr">221 </span>    8b/copy                         0/mod/indirect  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"># copy *ECX to EDX</span>
-<span id="L222" class="LineNr">222 </span>    <span class="subxComment"># EAX = handle-&gt;address</span>
-<span id="L223" class="LineNr">223 </span>    8b/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 *(ECX+4) to EAX</span>
-<span id="L224" class="LineNr">224 </span>    <span class="subxComment"># if (*EAX == EDX) return</span>
-<span id="L225" class="LineNr">225 </span>    39/compare                      0/mod/indirect  0/rm32/EAX   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>          2/r32/EDX  <span class="Normal"> . </span>             <span class="Normal"> . </span>                <span class="subxComment"># compare *EAX and EDX</span>
-<span id="L226" class="LineNr">226 </span>    74/jump-if-equal  $lookup:success/disp8
-<span id="L227" class="LineNr">227 </span>    <span class="subxComment"># otherwise print a message and exit</span>
-<span id="L228" class="LineNr">228 </span>    <span class="subxComment"># hard-coded abort just to minimize args and simplify calls</span>
-<span id="L229" class="LineNr">229 </span>    <span class="subxComment"># TODO: emit stack trace, etc.</span>
-<span id="L230" class="LineNr">230 </span>    <span class="subxS1Comment"># . _write(2/stderr, msg)</span>
-<span id="L231" class="LineNr">231 </span>    <span class="subxS2Comment"># . . push args</span>
-<span id="L232" class="LineNr">232 </span>    68/push  <span class="Constant">&quot;lookup failed&quot;</span>/imm32
-<span id="L233" class="LineNr">233 </span>    68/push  2/imm32/stderr
-<span id="L234" class="LineNr">234 </span>    <span class="subxS2Comment"># . . call</span>
-<span id="L235" class="LineNr">235 </span>    e8/call  <a href='../050_write.subx.html#L14'>_write</a>/disp32
-<span id="L236" class="LineNr">236 </span>    <span class="subxS2Comment"># . . discard args</span>
-<span id="L237" class="LineNr">237 </span>    81          0/subop/add         3/mod/direct    4/rm32/ESP   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>         <span class="Normal"> . </span>              8/imm32           <span class="subxComment"># add to ESP</span>
-<span id="L238" class="LineNr">238 </span>    <span class="subxS1Comment"># . syscall(exit, 1)</span>
-<span id="L239" class="LineNr">239 </span>    bb/copy-to-EBX  1/imm32/exit-status
-<span id="L240" class="LineNr">240 </span>    b8/copy-to-EAX  1/imm32/exit
-<span id="L241" class="LineNr">241 </span>    cd/syscall  0x80/imm8
-<span id="L242" class="LineNr">242 </span><span class="Constant">$lookup:success</span>:
-<span id="L243" class="LineNr">243 </span>    <span class="subxComment"># increment past payload alloc id</span>
-<span id="L244" class="LineNr">244 </span>    05/add-to-EAX  4/imm32
-<span id="L245" class="LineNr">245 </span>    <span class="subxS1Comment"># . restore registers</span>
-<span id="L246" class="LineNr">246 </span>    5a/pop-to-EDX
-<span id="L247" class="LineNr">247 </span>    59/pop-to-ECX
-<span id="L248" class="LineNr">248 </span>    <span class="subxS1Comment"># . epilog</span>
-<span id="L249" class="LineNr">249 </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="L250" class="LineNr">250 </span>    5d/pop-to-EBP
-<span id="L251" class="LineNr">251 </span>    c3/return
-<span id="L252" class="LineNr">252 </span>
-<span id="L253" class="LineNr">253 </span><span class="subxTest">test-lookup-success</span>:
-<span id="L254" class="LineNr">254 </span>    <span class="subxS1Comment"># . prolog</span>
-<span id="L255" class="LineNr">255 </span>    55/push-EBP
-<span id="L256" class="LineNr">256 </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="L257" class="LineNr">257 </span>    <span class="subxS1Comment"># . save registers</span>
-<span id="L258" class="LineNr">258 </span>    <span class="subxComment"># var handle/ECX = {0, 0}</span>
-<span id="L259" class="LineNr">259 </span>    68/push  0/imm32/address
-<span id="L260" class="LineNr">260 </span>    68/push  0/imm32/alloc-id
-<span id="L261" class="LineNr">261 </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="L262" class="LineNr">262 </span>    <span class="subxComment"># var ad/EAX : (address allocation-descriptor) = {0x0b000000, 0x0b000010}</span>
-<span id="L263" class="LineNr">263 </span>    68/push  0x0b000010/imm32/limit
-<span id="L264" class="LineNr">264 </span>    68/push  0x0b000000/imm32/curr
-<span id="L265" class="LineNr">265 </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="L266" class="LineNr">266 </span>    <span class="subxComment"># new(ad, 2, handle)</span>
-<span id="L267" class="LineNr">267 </span>    <span class="subxS2Comment"># . . push args</span>
-<span id="L268" class="LineNr">268 </span>    51/push-ECX
-<span id="L269" class="LineNr">269 </span>    68/push  2/imm32/size
-<span id="L270" class="LineNr">270 </span>    50/push-EAX
-<span id="L271" class="LineNr">271 </span>    <span class="subxS2Comment"># . . call</span>
-<span id="L272" class="LineNr">272 </span>    e8/call  <a href='handle.subx.html#L33'>new</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>              0xc/imm32         <span class="subxComment"># add to ESP</span>
-<span id="L275" class="LineNr">275 </span>    <span class="subxComment"># EAX = lookup(handle)</span>
-<span id="L276" class="LineNr">276 </span>    <span class="subxS2Comment"># . . push args</span>
-<span id="L277" class="LineNr">277 </span>    51/push-ECX
-<span id="L278" class="LineNr">278 </span>    <span class="subxS2Comment"># . . call</span>
-<span id="L279" class="LineNr">279 </span>    e8/call  <a href='handle.subx.html#L211'>lookup</a>/disp32
-<span id="L280" class="LineNr">280 </span>    <span class="subxS2Comment"># . . discard args</span>
-<span id="L281" class="LineNr">281 </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="L282" class="LineNr">282 </span>    <span class="subxComment"># EAX contains old ad-&gt;address, after skipping the alloc id in the payload</span>
-<span id="L283" class="LineNr">283 </span>    <span class="subxS1Comment"># . check-ints-equal(EAX, 0x0b000004, msg)</span>
-<span id="L284" class="LineNr">284 </span>    <span class="subxS2Comment"># . . push args</span>
-<span id="L285" class="LineNr">285 </span>    68/push  <span class="Constant">&quot;F - test-lookup-success&quot;</span>/imm32
-<span id="L286" class="LineNr">286 </span>    68/push  0x0b000004/imm32
-<span id="L287" class="LineNr">287 </span>    50/push-EAX
-<span id="L288" class="LineNr">288 </span>    <span class="subxS2Comment"># . . call</span>
-<span id="L289" class="LineNr">289 </span>    e8/call  <a href='../051test.subx.html#L24'>check-ints-equal</a>/disp32
-<span id="L290" class="LineNr">290 </span>    <span class="subxS2Comment"># . . discard args</span>
-<span id="L291" class="LineNr">291 </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="L292" class="LineNr">292 </span>    <span class="subxComment"># clean up</span>
-<span id="L293" class="LineNr">293 </span>    <span class="subxS1Comment"># . *Next-alloc-id = 1</span>
-<span id="L294" class="LineNr">294 </span>    c7          0/subop/copy        0/mod/direct    0/rm32/EAX   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>         <span class="Normal"> . </span>              1/imm32           <span class="subxComment"># copy to *EAX</span>
-<span id="L295" class="LineNr">295 </span>    <span class="subxS1Comment"># . restore registers</span>
-<span id="L296" class="LineNr">296 </span>    5a/pop-to-EDX
-<span id="L297" class="LineNr">297 </span>    59/pop-to-ECX
-<span id="L298" class="LineNr">298 </span>    <span class="subxS1Comment"># . epilog</span>
-<span id="L299" class="LineNr">299 </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="L300" class="LineNr">300 </span>    5d/pop-to-EBP
-<span id="L301" class="LineNr">301 </span>    c3/return
-<span id="L302" class="LineNr">302 </span>
-<span id="L303" class="LineNr">303 </span><span class="subxTest">test-lookup-failure</span>:
-<span id="L304" class="LineNr">304 </span>    <span class="subxS1Comment"># . prolog</span>
-<span id="L305" class="LineNr">305 </span>    55/push-EBP
-<span id="L306" class="LineNr">306 </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="L307" class="LineNr">307 </span>    <span class="subxS1Comment"># . save registers</span>
-<span id="L308" class="LineNr">308 </span>    50/push-EAX
-<span id="L309" class="LineNr">309 </span>    51/push-ECX
-<span id="L310" class="LineNr">310 </span>    52/push-EDX
-<span id="L311" class="LineNr">311 </span>    <span class="subxComment"># var h1/ECX = {0, 0}</span>
-<span id="L312" class="LineNr">312 </span>    68/push  0/imm32/address
-<span id="L313" class="LineNr">313 </span>    68/push  0/imm32/alloc-id
-<span id="L314" class="LineNr">314 </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="L315" class="LineNr">315 </span>    <span class="subxComment"># var ad/EAX : (address allocation-descriptor) = {0x0b000000, 0x0b000010}</span>
-<span id="L316" class="LineNr">316 </span>    68/push  0x0b000010/imm32/limit
-<span id="L317" class="LineNr">317 </span>    68/push  0x0b000000/imm32/curr
-<span id="L318" class="LineNr">318 </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="L319" class="LineNr">319 </span>    <span class="subxComment"># first allocation, to h1</span>
-<span id="L320" class="LineNr">320 </span>    <span class="subxS1Comment"># . new(ad, 2, h1)</span>
-<span id="L321" class="LineNr">321 </span>    <span class="subxS2Comment"># . . push args</span>
-<span id="L322" class="LineNr">322 </span>    51/push-ECX
-<span id="L323" class="LineNr">323 </span>    68/push  2/imm32/size
-<span id="L324" class="LineNr">324 </span>    50/push-EAX
-<span id="L325" class="LineNr">325 </span>    <span class="subxS2Comment"># . . call</span>
-<span id="L326" class="LineNr">326 </span>    e8/call  <a href='handle.subx.html#L33'>new</a>/disp32
-<span id="L327" class="LineNr">327 </span>    <span class="subxS2Comment"># . . discard args</span>
-<span id="L328" class="LineNr">328 </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="L329" class="LineNr">329 </span>    <span class="subxComment"># reset ad-&gt;curr to mimic reclamation</span>
-<span id="L330" class="LineNr">330 </span>    c7          0/subop/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>              0x0b000000/imm32  <span class="subxComment"># copy to *EAX</span>
-<span id="L331" class="LineNr">331 </span>    <span class="subxComment"># second allocation that returns the same address as the first</span>
-<span id="L332" class="LineNr">332 </span>    <span class="subxComment"># var h2/EDX = {0, 0}</span>
-<span id="L333" class="LineNr">333 </span>    68/push  0/imm32/address
-<span id="L334" class="LineNr">334 </span>    68/push  0/imm32/alloc-id
-<span id="L335" class="LineNr">335 </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="L336" class="LineNr">336 </span>    <span class="subxS1Comment"># . new(ad, 2, h2)</span>
-<span id="L337" class="LineNr">337 </span>    <span class="subxS2Comment"># . . push args</span>
-<span id="L338" class="LineNr">338 </span>    52/push-EDX
-<span id="L339" class="LineNr">339 </span>    68/push  2/imm32/size
-<span id="L340" class="LineNr">340 </span>    50/push-EAX
-<span id="L341" class="LineNr">341 </span>    <span class="subxS2Comment"># . . call</span>
-<span id="L342" class="LineNr">342 </span>    e8/call  <a href='handle.subx.html#L33'>new</a>/disp32
-<span id="L343" class="LineNr">343 </span>    <span class="subxS2Comment"># . . discard args</span>
-<span id="L344" class="LineNr">344 </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="L345" class="LineNr">345 </span>    <span class="subxComment"># lookup(h1) should crash</span>
-<span id="L346" class="LineNr">346 </span>    <span class="subxS2Comment"># . . push args</span>
-<span id="L347" class="LineNr">347 </span>    51/push-ECX
-<span id="L348" class="LineNr">348 </span>    <span class="subxS2Comment"># . . call</span>
-<span id="L349" class="LineNr">349 </span>    e8/call  <a href='handle.subx.html#L211'>lookup</a>/disp32
-<span id="L350" class="LineNr">350 </span>    <span class="subxComment"># should never get past this point</span>
-<span id="L351" class="LineNr">351 </span>    <span class="subxS2Comment"># . . discard args</span>
-<span id="L352" class="LineNr">352 </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="L353" class="LineNr">353 </span>    <span class="subxComment"># clean up</span>
-<span id="L354" class="LineNr">354 </span>    <span class="subxS1Comment"># . *Next-alloc-id = 1</span>
-<span id="L355" class="LineNr">355 </span>    c7          0/subop/copy        0/mod/direct    0/rm32/EAX   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>         <span class="Normal"> . </span>              1/imm32           <span class="subxComment"># copy to *EAX</span>
-<span id="L356" class="LineNr">356 </span>    <span class="subxS1Comment"># . restore registers</span>
-<span id="L357" class="LineNr">357 </span>    5a/pop-to-EDX
-<span id="L358" class="LineNr">358 </span>    59/pop-to-ECX
-<span id="L359" class="LineNr">359 </span>    58/pop-to-EAX
-<span id="L360" class="LineNr">360 </span>    <span class="subxS1Comment"># . epilog</span>
-<span id="L361" class="LineNr">361 </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="L362" class="LineNr">362 </span>    5d/pop-to-EBP
-<span id="L363" class="LineNr">363 </span>    c3/return
-<span id="L364" class="LineNr">364 </span>
-<span id="L365" class="LineNr">365 </span>== data
-<span id="L366" class="LineNr">366 </span>
-<span id="L367" class="LineNr">367 </span><span class="subxComment"># Monotonically increasing counter for calls to 'new'</span>
-<span id="L368" class="LineNr">368 </span><span class="SpecialChar">Next-alloc-id</span>:
-<span id="L369" class="LineNr">369 </span>    01 00 00 00  <span class="subxComment"># 1</span>
-<span id="L370" class="LineNr">370 </span>
-<span id="L371" class="LineNr">371 </span><span class="subxS2Comment"># . . vim&#0058;nowrap:textwidth=0</span>
+<span id="L20" class="LineNr"> 20 </span><span class="subxComment"># (This file is a prototype, so the tests in this file aren't real tests. Don't</span>
+<span id="L21" class="LineNr"> 21 </span><span class="subxComment"># expect to run anything in the same process after they've completed.)</span>
+<span id="L22" class="LineNr"> 22 </span>
+<span id="L23" class="LineNr"> 23 </span>== code
+<span id="L24" class="LineNr"> 24 </span><span class="subxComment">#   instruction                     effective address                                                   register    displacement    immediate</span>
+<span id="L25" class="LineNr"> 25 </span><span class="subxS1Comment"># . op          subop               mod             rm32          base        index         scale       r32</span>
+<span id="L26" class="LineNr"> 26 </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="L27" class="LineNr"> 27 </span>
+<span id="L28" class="LineNr"> 28 </span><span class="subxComment"># main:</span>
+<span id="L29" class="LineNr"> 29 </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="L30" class="LineNr"> 30 </span>    <span class="subxComment"># syscall(exit, Num-test-failures)</span>
+<span id="L31" class="LineNr"> 31 </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="L32" class="LineNr"> 32 </span>    b8/copy-to-EAX  1/imm32/exit
+<span id="L33" class="LineNr"> 33 </span>    cd/syscall  0x80/imm8
+<span id="L34" class="LineNr"> 34 </span>
+<span id="L35" class="LineNr"> 35 </span><span class="subxFunction">new</span>:  <span class="subxComment"># ad : (address allocation-descriptor), n : int, out : (address handle)</span>
+<span id="L36" class="LineNr"> 36 </span>    <span class="subxS1Comment"># . prolog</span>
+<span id="L37" class="LineNr"> 37 </span>    55/push-EBP
+<span id="L38" class="LineNr"> 38 </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="L39" class="LineNr"> 39 </span>    <span class="subxS1Comment"># . save registers</span>
+<span id="L40" class="LineNr"> 40 </span>    50/push-EAX
+<span id="L41" class="LineNr"> 41 </span>    51/push-ECX
+<span id="L42" class="LineNr"> 42 </span>    52/push-EDX
+<span id="L43" class="LineNr"> 43 </span>    <span class="subxComment"># ECX = n+4</span>
+<span id="L44" class="LineNr"> 44 </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="L45" class="LineNr"> 45 </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="L46" class="LineNr"> 46 </span>    <span class="subxComment"># EAX = allocate(ad, ECX)</span>
+<span id="L47" class="LineNr"> 47 </span>    <span class="subxS2Comment"># . . push args</span>
+<span id="L48" class="LineNr"> 48 </span>    51/push-ECX
+<span id="L49" class="LineNr"> 49 </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="L50" class="LineNr"> 50 </span>    <span class="subxS2Comment"># . . call</span>
+<span id="L51" class="LineNr"> 51 </span>    e8/call  <a href='../066allocate.subx.html#L41'>allocate</a>/disp32
+<span id="L52" class="LineNr"> 52 </span>    <span class="subxS2Comment"># . . discard args</span>
+<span id="L53" class="LineNr"> 53 </span>    81          0/subop/add         3/mod/direct    4/rm32/ESP   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>         <span class="Normal"> . </span>              8/imm32           <span class="subxComment"># add to ESP</span>
+<span id="L54" class="LineNr"> 54 </span>    <span class="subxComment"># EDX = out</span>
+<span id="L55" class="LineNr"> 55 </span>    8b/copy                         1/mod/*+disp8   5/rm32/EBP   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>          2/r32/EDX   0x10/disp8     <span class="Normal"> . </span>                <span class="subxComment"># copy *(EBP+16) to EDX</span>
+<span id="L56" class="LineNr"> 56 </span>    <span class="subxComment"># out-&gt;address = EAX</span>
+<span id="L57" class="LineNr"> 57 </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="L58" class="LineNr"> 58 </span>    <span class="subxComment"># if (EAX == 0) out-&gt;alloc_id = 0, return</span>
+<span id="L59" class="LineNr"> 59 </span>    81          7/subop/compare     3/mod/direct    0/rm32/EAX   <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 EAX</span>
+<span id="L60" class="LineNr"> 60 </span>    75/jump-if-not-equal  $new:continue/disp8
+<span id="L61" class="LineNr"> 61 </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="L62" class="LineNr"> 62 </span>    eb/jump  $new:end/disp8
+<span id="L63" class="LineNr"> 63 </span><span class="Constant">$new:continue</span>:
+<span id="L64" class="LineNr"> 64 </span>    <span class="subxComment"># otherwise:</span>
+<span id="L65" class="LineNr"> 65 </span>    <span class="subxComment"># ECX = *Next-alloc-id</span>
+<span id="L66" class="LineNr"> 66 </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#L363'>Next-alloc-id</a></span>/disp32              <span class="subxComment"># copy *Next-alloc-id to ECX</span>
+<span id="L67" class="LineNr"> 67 </span>    <span class="subxComment"># *EAX = *Next-alloc-id/ECX</span>
+<span id="L68" class="LineNr"> 68 </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="L69" class="LineNr"> 69 </span>    <span class="subxComment"># out-&gt;alloc_id = *Next-alloc-id</span>
+<span id="L70" class="LineNr"> 70 </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="L71" class="LineNr"> 71 </span>    <span class="subxComment"># increment *Next-alloc-id</span>
+<span id="L72" class="LineNr"> 72 </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#L363'>Next-alloc-id</a></span>/disp32              <span class="subxComment"># increment *Next-alloc-id</span>
+<span id="L73" class="LineNr"> 73 </span><span class="Constant">$new:end</span>:
+<span id="L74" class="LineNr"> 74 </span>    <span class="subxS1Comment"># . restore registers</span>
+<span id="L75" class="LineNr"> 75 </span>    5a/pop-to-EDX
+<span id="L76" class="LineNr"> 76 </span>    59/pop-to-ECX
+<span id="L77" class="LineNr"> 77 </span>    58/pop-to-EAX
+<span id="L78" class="LineNr"> 78 </span>    <span class="subxS1Comment"># . epilog</span>
+<span id="L79" class="LineNr"> 79 </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="L80" class="LineNr"> 80 </span>    5d/pop-to-EBP
+<span id="L81" class="LineNr"> 81 </span>    c3/return
+<span id="L82" class="LineNr"> 82 </span>
+<span id="L83" class="LineNr"> 83 </span><span class="subxTest">test-new</span>:
+<span id="L84" class="LineNr"> 84 </span>    <span class="subxS1Comment"># . prolog</span>
+<span id="L85" class="LineNr"> 85 </span>    55/push-EBP
+<span id="L86" class="LineNr"> 86 </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="L87" class="LineNr"> 87 </span>    <span class="subxComment"># *Next-alloc-id = 0x34</span>
+<span id="L88" class="LineNr"> 88 </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#L363'>Next-alloc-id</a></span>/disp32  0x34/imm32        <span class="subxComment"># copy to *Next-alloc-id</span>
+<span id="L89" class="LineNr"> 89 </span>    <span class="subxComment"># var handle/ECX = {0, 0}</span>
+<span id="L90" class="LineNr"> 90 </span>    68/push  0/imm32/address
+<span id="L91" class="LineNr"> 91 </span>    68/push  0/imm32/alloc-id
+<span id="L92" class="LineNr"> 92 </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="L93" class="LineNr"> 93 </span>    <span class="subxComment"># new(Heap, 2, handle/ECX)</span>
+<span id="L94" class="LineNr"> 94 </span>    <span class="subxS2Comment"># . . push args</span>
+<span id="L95" class="LineNr"> 95 </span>    51/push-ECX
+<span id="L96" class="LineNr"> 96 </span>    68/push  2/imm32/size
+<span id="L97" class="LineNr"> 97 </span>    68/push  <span class="SpecialChar"><a href='../066allocate.subx.html#L23'>Heap</a></span>/imm32
+<span id="L98" class="LineNr"> 98 </span>    <span class="subxS2Comment"># . . call</span>
+<span id="L99" class="LineNr"> 99 </span>    e8/call  <a href='handle.subx.html#L35'>new</a>/disp32
+<span id="L100" class="LineNr">100 </span>    <span class="subxS2Comment"># . . discard args</span>
+<span id="L101" class="LineNr">101 </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="L102" class="LineNr">102 </span>    <span class="subxComment"># check-ints-equal(handle-&gt;alloc_id, 0x34, msg)</span>
+<span id="L103" class="LineNr">103 </span>    <span class="subxS2Comment"># . . push args</span>
+<span id="L104" class="LineNr">104 </span>    68/push  <span class="Constant">&quot;F - <a href='handle.subx.html#L83'>test-new</a>: alloc id of handle&quot;</span>/imm32
+<span id="L105" class="LineNr">105 </span>    68/push  0x34/imm32
+<span id="L106" class="LineNr">106 </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="L107" class="LineNr">107 </span>    <span class="subxS2Comment"># . . call</span>
+<span id="L108" class="LineNr">108 </span>    e8/call  <a href='../051test.subx.html#L24'>check-ints-equal</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>              0xc/imm32         <span class="subxComment"># add to ESP</span>
+<span id="L111" class="LineNr">111 </span>    <span class="subxComment"># check-ints-equal(*handle-&gt;address, 0x34, msg)</span>
+<span id="L112" class="LineNr">112 </span>    <span class="subxS2Comment"># . . push args</span>
+<span id="L113" class="LineNr">113 </span>    68/push  <span class="Constant">&quot;F - <a href='handle.subx.html#L83'>test-new</a>: alloc id of payload&quot;</span>/imm32
+<span id="L114" class="LineNr">114 </span>    68/push  0x34/imm32
+<span id="L115" class="LineNr">115 </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="L116" class="LineNr">116 </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="L117" class="LineNr">117 </span>    <span class="subxS2Comment"># . . call</span>
+<span id="L118" class="LineNr">118 </span>    e8/call  <a href='../051test.subx.html#L24'>check-ints-equal</a>/disp32
+<span id="L119" class="LineNr">119 </span>    <span class="subxS2Comment"># . . discard args</span>
+<span id="L120" class="LineNr">120 </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="L121" class="LineNr">121 </span>    <span class="subxComment"># check-ints-equal(*Next-alloc-id, 0x35)</span>
+<span id="L122" class="LineNr">122 </span>    <span class="subxS2Comment"># . . push args</span>
+<span id="L123" class="LineNr">123 </span>    68/push  <span class="Constant">&quot;F - <a href='handle.subx.html#L83'>test-new</a>: next alloc id&quot;</span>/imm32
+<span id="L124" class="LineNr">124 </span>    68/push  0x35/imm32
+<span id="L125" class="LineNr">125 </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#L363'>Next-alloc-id</a></span>/disp32              <span class="subxComment"># copy to *Next-alloc-id</span>
+<span id="L126" class="LineNr">126 </span>    <span class="subxS2Comment"># . . call</span>
+<span id="L127" class="LineNr">127 </span>    e8/call  <a href='../051test.subx.html#L24'>check-ints-equal</a>/disp32
+<span id="L128" class="LineNr">128 </span>    <span class="subxS2Comment"># . . discard args</span>
+<span id="L129" class="LineNr">129 </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="L130" class="LineNr">130 </span>    <span class="subxComment"># clean up</span>
+<span id="L131" class="LineNr">131 </span>    <span class="subxS1Comment"># . *Next-alloc-id = 1</span>
+<span id="L132" class="LineNr">132 </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#L363'>Next-alloc-id</a></span>/disp32  1/imm32           <span class="subxComment"># copy to *Next-alloc-id</span>
+<span id="L133" class="LineNr">133 </span>    <span class="subxS1Comment"># . epilog</span>
+<span id="L134" class="LineNr">134 </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="L135" class="LineNr">135 </span>    5d/pop-to-EBP
+<span id="L136" class="LineNr">136 </span>    c3/return
+<span id="L137" class="LineNr">137 </span>
+<span id="L138" class="LineNr">138 </span><span class="subxTest">test-new-failure</span>:
+<span id="L139" class="LineNr">139 </span>    <span class="subxS1Comment"># . prolog</span>
+<span id="L140" class="LineNr">140 </span>    55/push-EBP
+<span id="L141" class="LineNr">141 </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="L142" class="LineNr">142 </span>    <span class="subxS1Comment"># . *Next-alloc-id = 0x34</span>
+<span id="L143" class="LineNr">143 </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#L363'>Next-alloc-id</a></span>/disp32  0x34/imm32  <span class="subxComment"># copy to *Next-alloc-id</span>
+<span id="L144" class="LineNr">144 </span>    <span class="subxComment"># define an allocation-descriptor with no space left</span>
+<span id="L145" class="LineNr">145 </span>    <span class="subxS1Comment"># . var ad/EAX : (address allocation-descriptor) = {0x10, 0x10}</span>
+<span id="L146" class="LineNr">146 </span>    68/push  0x10/imm32/limit
+<span id="L147" class="LineNr">147 </span>    68/push  0x10/imm32/curr
+<span id="L148" class="LineNr">148 </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="L149" class="LineNr">149 </span>    <span class="subxS1Comment"># . var handle/ECX = {random, random}</span>
+<span id="L150" class="LineNr">150 </span>    68/push  1234/imm32/address
+<span id="L151" class="LineNr">151 </span>    68/push  5678/imm32/alloc-id
+<span id="L152" class="LineNr">152 </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="L153" class="LineNr">153 </span>    <span class="subxComment"># try to allocate</span>
+<span id="L154" class="LineNr">154 </span>    <span class="subxS1Comment"># . new(ad, 2, handle/ECX)</span>
+<span id="L155" class="LineNr">155 </span>    <span class="subxS2Comment"># . . push args</span>
+<span id="L156" class="LineNr">156 </span>    51/push-ECX
+<span id="L157" class="LineNr">157 </span>    68/push  2/imm32/size
+<span id="L158" class="LineNr">158 </span>    50/push-EAX
+<span id="L159" class="LineNr">159 </span>    <span class="subxS2Comment"># . . call</span>
+<span id="L160" class="LineNr">160 </span>    e8/call  <a href='handle.subx.html#L35'>new</a>/disp32
+<span id="L161" class="LineNr">161 </span>    <span class="subxS2Comment"># . . discard args</span>
+<span id="L162" class="LineNr">162 </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="L163" class="LineNr">163 </span>    <span class="subxComment"># handle should be cleared</span>
+<span id="L164" class="LineNr">164 </span>    <span class="subxS1Comment"># . check-ints-equal(handle-&gt;alloc_id, 0, msg)</span>
+<span id="L165" class="LineNr">165 </span>    <span class="subxS2Comment"># . . push args</span>
+<span id="L166" class="LineNr">166 </span>    68/push  <span class="Constant">&quot;F - <a href='handle.subx.html#L138'>test-new-failure</a>: alloc id of handle&quot;</span>/imm32
+<span id="L167" class="LineNr">167 </span>    68/push  0/imm32
+<span id="L168" class="LineNr">168 </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="L169" class="LineNr">169 </span>    <span class="subxS2Comment"># . . call</span>
+<span id="L170" class="LineNr">170 </span>    e8/call  <a href='../051test.subx.html#L24'>check-ints-equal</a>/disp32
+<span id="L171" class="LineNr">171 </span>    <span class="subxS2Comment"># . . discard args</span>
+<span id="L172" class="LineNr">172 </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="L173" class="LineNr">173 </span>    <span class="subxS1Comment"># . check-ints-equal(handle-&gt;address, 0, msg)</span>
+<span id="L174" class="LineNr">174 </span>    <span class="subxS2Comment"># . . push args</span>
+<span id="L175" class="LineNr">175 </span>    68/push  <span class="Constant">&quot;F - <a href='handle.subx.html#L138'>test-new-failure</a>: address of handle&quot;</span>/imm32
+<span id="L176" class="LineNr">176 </span>    68/push  0/imm32
+<span id="L177" class="LineNr">177 </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="L178" class="LineNr">178 </span>    <span class="subxS2Comment"># . . call</span>
+<span id="L179" class="LineNr">179 </span>    e8/call  <a href='../051test.subx.html#L24'>check-ints-equal</a>/disp32
+<span id="L180" class="LineNr">180 </span>    <span class="subxS2Comment"># . . discard args</span>
+<span id="L181" class="LineNr">181 </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="L182" class="LineNr">182 </span>    <span class="subxComment"># Next-alloc-id should be unmodified</span>
+<span id="L183" class="LineNr">183 </span>    <span class="subxS1Comment"># . check-ints-equal(*Next-alloc-id, 0x34)</span>
+<span id="L184" class="LineNr">184 </span>    <span class="subxS2Comment"># . . push args</span>
+<span id="L185" class="LineNr">185 </span>    68/push  <span class="Constant">&quot;F - <a href='handle.subx.html#L138'>test-new-failure</a>: next alloc id&quot;</span>/imm32
+<span id="L186" class="LineNr">186 </span>    68/push  0x34/imm32
+<span id="L187" class="LineNr">187 </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#L363'>Next-alloc-id</a></span>/disp32              <span class="subxComment"># copy to *Next-alloc-id</span>
+<span id="L188" class="LineNr">188 </span>    <span class="subxS2Comment"># . . call</span>
+<span id="L189" class="LineNr">189 </span>    e8/call  <a href='../051test.subx.html#L24'>check-ints-equal</a>/disp32
+<span id="L190" class="LineNr">190 </span>    <span class="subxS2Comment"># . . discard args</span>
+<span id="L191" class="LineNr">191 </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="L192" class="LineNr">192 </span>    <span class="subxComment"># clean up</span>
+<span id="L193" class="LineNr">193 </span>    <span class="subxS1Comment"># . *Next-alloc-id = 1</span>
+<span id="L194" class="LineNr">194 </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#L363'>Next-alloc-id</a></span>/disp32  1/imm32           <span class="subxComment"># copy to *Next-alloc-id</span>
+<span id="L195" class="LineNr">195 </span>    <span class="subxS1Comment"># . epilog</span>
+<span id="L196" class="LineNr">196 </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="L197" class="LineNr">197 </span>    5d/pop-to-EBP
+<span id="L198" class="LineNr">198 </span>    c3/return
+<span id="L199" class="LineNr">199 </span>
+<span id="L200" class="LineNr">200 </span><span class="subxFunction">lookup</span>:  <span class="subxComment"># h : (handle T) -&gt; EAX : (address T)</span>
+<span id="L201" class="LineNr">201 </span>    <span class="subxS1Comment"># . prolog</span>
+<span id="L202" class="LineNr">202 </span>    55/push-EBP
+<span id="L203" class="LineNr">203 </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="L204" class="LineNr">204 </span>    <span class="subxS1Comment"># . save registers</span>
+<span id="L205" class="LineNr">205 </span>    51/push-ECX
+<span id="L206" class="LineNr">206 </span>    52/push-EDX
+<span id="L207" class="LineNr">207 </span>    <span class="subxComment"># ECX = handle</span>
+<span id="L208" class="LineNr">208 </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="L209" class="LineNr">209 </span>    <span class="subxComment"># EDX = handle-&gt;alloc_id</span>
+<span id="L210" class="LineNr">210 </span>    8b/copy                         0/mod/indirect  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"># copy *ECX to EDX</span>
+<span id="L211" class="LineNr">211 </span>    <span class="subxComment"># EAX = handle-&gt;address</span>
+<span id="L212" class="LineNr">212 </span>    8b/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 *(ECX+4) to EAX</span>
+<span id="L213" class="LineNr">213 </span>    <span class="subxComment"># if (*EAX == EDX) return</span>
+<span id="L214" class="LineNr">214 </span>    39/compare                      0/mod/indirect  0/rm32/EAX   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>          2/r32/EDX  <span class="Normal"> . </span>             <span class="Normal"> . </span>                <span class="subxComment"># compare *EAX and EDX</span>
+<span id="L215" class="LineNr">215 </span>    74/jump-if-equal  $lookup:success/disp8
+<span id="L216" class="LineNr">216 </span>    <span class="subxComment"># otherwise print a message and exit</span>
+<span id="L217" class="LineNr">217 </span>    <span class="subxComment"># hard-coded abort just to minimize args and simplify calls</span>
+<span id="L218" class="LineNr">218 </span>    <span class="subxComment"># TODO: emit stack trace, etc.</span>
+<span id="L219" class="LineNr">219 </span>    <span class="subxS1Comment"># . _write(2/stderr, msg)</span>
+<span id="L220" class="LineNr">220 </span>    <span class="subxS2Comment"># . . push args</span>
+<span id="L221" class="LineNr">221 </span>    68/push  <span class="Constant">&quot;lookup failed&quot;</span>/imm32
+<span id="L222" class="LineNr">222 </span>    68/push  2/imm32/stderr
+<span id="L223" class="LineNr">223 </span>    <span class="subxS2Comment"># . . call</span>
+<span id="L224" class="LineNr">224 </span>    e8/call  <a href='../050_write.subx.html#L14'>_write</a>/disp32
+<span id="L225" class="LineNr">225 </span>    <span class="subxS2Comment"># . . discard args</span>
+<span id="L226" class="LineNr">226 </span>    81          0/subop/add         3/mod/direct    4/rm32/ESP   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>         <span class="Normal"> . </span>              8/imm32           <span class="subxComment"># add to ESP</span>
+<span id="L227" class="LineNr">227 </span>    <span class="subxS1Comment"># . syscall(exit, 1)</span>
+<span id="L228" class="LineNr">228 </span>    bb/copy-to-EBX  1/imm32/exit-status
+<span id="L229" class="LineNr">229 </span>    b8/copy-to-EAX  1/imm32/exit
+<span id="L230" class="LineNr">230 </span>    cd/syscall  0x80/imm8
+<span id="L231" class="LineNr">231 </span><span class="Constant">$lookup:success</span>:
+<span id="L232" class="LineNr">232 </span>    <span class="subxComment"># increment past payload alloc id</span>
+<span id="L233" class="LineNr">233 </span>    05/add-to-EAX  4/imm32
+<span id="L234" class="LineNr">234 </span>    <span class="subxS1Comment"># . restore registers</span>
+<span id="L235" class="LineNr">235 </span>    5a/pop-to-EDX
+<span id="L236" class="LineNr">236 </span>    59/pop-to-ECX
+<span id="L237" class="LineNr">237 </span>    <span class="subxS1Comment"># . epilog</span>
+<span id="L238" class="LineNr">238 </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="L239" class="LineNr">239 </span>    5d/pop-to-EBP
+<span id="L240" class="LineNr">240 </span>    c3/return
+<span id="L241" class="LineNr">241 </span>
+<span id="L242" class="LineNr">242 </span><span class="subxTest">test-lookup-success</span>:
+<span id="L243" class="LineNr">243 </span>    <span class="subxS1Comment"># . prolog</span>
+<span id="L244" class="LineNr">244 </span>    55/push-EBP
+<span id="L245" class="LineNr">245 </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="L246" class="LineNr">246 </span>    <span class="subxS1Comment"># . save registers</span>
+<span id="L247" class="LineNr">247 </span>    <span class="subxComment"># var handle/ECX = {0, 0}</span>
+<span id="L248" class="LineNr">248 </span>    68/push  0/imm32/address
+<span id="L249" class="LineNr">249 </span>    68/push  0/imm32/alloc-id
+<span id="L250" class="LineNr">250 </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="L251" class="LineNr">251 </span>    <span class="subxComment"># var old_top/EDX = Heap-&gt;curr</span>
+<span id="L252" class="LineNr">252 </span>    8b/copy                         0/mod/indirect  5/rm32/.disp32           <span class="Normal"> . </span>           <span class="Normal"> . </span>          2/r32/EDX   <span class="SpecialChar"><a href='../066allocate.subx.html#L23'>Heap</a></span>/disp32    <span class="Normal"> . </span>                <span class="subxComment"># copy *Heap to EDX</span>
+<span id="L253" class="LineNr">253 </span>    <span class="subxComment"># new(Heap, 2, handle)</span>
+<span id="L254" class="LineNr">254 </span>    <span class="subxS2Comment"># . . push args</span>
+<span id="L255" class="LineNr">255 </span>    51/push-ECX
+<span id="L256" class="LineNr">256 </span>    68/push  2/imm32/size
+<span id="L257" class="LineNr">257 </span>    68/push  <span class="SpecialChar"><a href='../066allocate.subx.html#L23'>Heap</a></span>/imm32
+<span id="L258" class="LineNr">258 </span>    <span class="subxS2Comment"># . . call</span>
+<span id="L259" class="LineNr">259 </span>    e8/call  <a href='handle.subx.html#L35'>new</a>/disp32
+<span id="L260" class="LineNr">260 </span>    <span class="subxS2Comment"># . . discard args</span>
+<span id="L261" class="LineNr">261 </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="L262" class="LineNr">262 </span>    <span class="subxComment"># EAX = lookup(handle)</span>
+<span id="L263" class="LineNr">263 </span>    <span class="subxS2Comment"># . . push args</span>
+<span id="L264" class="LineNr">264 </span>    51/push-ECX
+<span id="L265" class="LineNr">265 </span>    <span class="subxS2Comment"># . . call</span>
+<span id="L266" class="LineNr">266 </span>    e8/call  <a href='handle.subx.html#L200'>lookup</a>/disp32
+<span id="L267" class="LineNr">267 </span>    <span class="subxS2Comment"># . . discard args</span>
+<span id="L268" class="LineNr">268 </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="L269" class="LineNr">269 </span>    <span class="subxComment"># EAX contains old top of Heap, except skipping the alloc id in the payload</span>
+<span id="L270" class="LineNr">270 </span>    <span class="subxS1Comment"># . check-ints-equal(EAX, old_top+4, msg)</span>
+<span id="L271" class="LineNr">271 </span>    <span class="subxS2Comment"># . . push args</span>
+<span id="L272" class="LineNr">272 </span>    68/push  <span class="Constant">&quot;F - test-lookup-success&quot;</span>/imm32
+<span id="L273" class="LineNr">273 </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="L274" class="LineNr">274 </span>    52/push-EDX
+<span id="L275" class="LineNr">275 </span>    50/push-EAX
+<span id="L276" class="LineNr">276 </span>    <span class="subxS2Comment"># . . call</span>
+<span id="L277" class="LineNr">277 </span>    e8/call  <a href='../051test.subx.html#L24'>check-ints-equal</a>/disp32
+<span id="L278" class="LineNr">278 </span>    <span class="subxS2Comment"># . . discard args</span>
+<span id="L279" class="LineNr">279 </span>    81          0/subop/add         3/mod/direct    4/rm32/ESP   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>         <span class="Normal"> . </span>              0xc/imm32         <span class="subxComment"># add to ESP</span>
+<span id="L280" class="LineNr">280 </span>    <span class="subxComment"># clean up</span>
+<span id="L281" class="LineNr">281 </span>    <span class="subxS1Comment"># . *Next-alloc-id = 1</span>
+<span id="L282" class="LineNr">282 </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#L363'>Next-alloc-id</a></span>/disp32  1/imm32           <span class="subxComment"># copy to *Next-alloc-id</span>
+<span id="L283" class="LineNr">283 </span>    <span class="subxS1Comment"># . restore registers</span>
+<span id="L284" class="LineNr">284 </span>    5a/pop-to-EDX
+<span id="L285" class="LineNr">285 </span>    59/pop-to-ECX
+<span id="L286" class="LineNr">286 </span>    <span class="subxS1Comment"># . epilog</span>
+<span id="L287" class="LineNr">287 </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="L288" class="LineNr">288 </span>    5d/pop-to-EBP
+<span id="L289" class="LineNr">289 </span>    c3/return
+<span id="L290" class="LineNr">290 </span>
+<span id="L291" class="LineNr">291 </span><span class="subxTest">test-lookup-failure</span>:
+<span id="L292" class="LineNr">292 </span>    <span class="subxS1Comment"># . prolog</span>
+<span id="L293" class="LineNr">293 </span>    55/push-EBP
+<span id="L294" class="LineNr">294 </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="L295" class="LineNr">295 </span>    <span class="subxS1Comment"># . save registers</span>
+<span id="L296" class="LineNr">296 </span>    50/push-EAX
+<span id="L297" class="LineNr">297 </span>    51/push-ECX
+<span id="L298" class="LineNr">298 </span>    52/push-EDX
+<span id="L299" class="LineNr">299 </span>    <span class="subxComment"># var h1/ECX = {0, 0}</span>
+<span id="L300" class="LineNr">300 </span>    68/push  0/imm32/address
+<span id="L301" class="LineNr">301 </span>    68/push  0/imm32/alloc-id
+<span id="L302" class="LineNr">302 </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="L303" class="LineNr">303 </span>    <span class="subxComment"># var old_top/EBX = Heap-&gt;curr</span>
+<span id="L304" class="LineNr">304 </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='../066allocate.subx.html#L23'>Heap</a></span>/disp32    <span class="Normal"> . </span>                <span class="subxComment"># copy *Heap to EBX</span>
+<span id="L305" class="LineNr">305 </span>    <span class="subxComment"># first allocation, to h1</span>
+<span id="L306" class="LineNr">306 </span>    <span class="subxS1Comment"># . new(Heap, 2, h1)</span>
+<span id="L307" class="LineNr">307 </span>    <span class="subxS2Comment"># . . push args</span>
+<span id="L308" class="LineNr">308 </span>    51/push-ECX
+<span id="L309" class="LineNr">309 </span>    68/push  2/imm32/size
+<span id="L310" class="LineNr">310 </span>    68/push  <span class="SpecialChar"><a href='../066allocate.subx.html#L23'>Heap</a></span>/imm32
+<span id="L311" class="LineNr">311 </span>    <span class="subxS2Comment"># . . call</span>
+<span id="L312" class="LineNr">312 </span>    e8/call  <a href='handle.subx.html#L35'>new</a>/disp32
+<span id="L313" class="LineNr">313 </span>    <span class="subxS2Comment"># . . discard args</span>
+<span id="L314" class="LineNr">314 </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="L315" class="LineNr">315 </span>    <span class="subxComment"># reset Heap-&gt;curr to mimic reclamation</span>
+<span id="L316" class="LineNr">316 </span>    89/copy                         0/mod/indirect  5/rm32/.disp32           <span class="Normal"> . </span>           <span class="Normal"> . </span>          3/r32/EBX   <span class="SpecialChar"><a href='../066allocate.subx.html#L23'>Heap</a></span>/disp32    <span class="Normal"> . </span>                <span class="subxComment"># copy EBX to *Heap</span>
+<span id="L317" class="LineNr">317 </span>    <span class="subxComment"># second allocation that returns the same address as the first</span>
+<span id="L318" class="LineNr">318 </span>    <span class="subxComment"># var h2/EDX = {0, 0}</span>
+<span id="L319" class="LineNr">319 </span>    68/push  0/imm32/address
+<span id="L320" class="LineNr">320 </span>    68/push  0/imm32/alloc-id
+<span id="L321" class="LineNr">321 </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="L322" class="LineNr">322 </span>    <span class="subxS1Comment"># . new(Heap, 2, h2)</span>
+<span id="L323" class="LineNr">323 </span>    <span class="subxS2Comment"># . . push args</span>
+<span id="L324" class="LineNr">324 </span>    52/push-EDX
+<span id="L325" class="LineNr">325 </span>    68/push  2/imm32/size
+<span id="L326" class="LineNr">326 </span>    68/push  <span class="SpecialChar"><a href='../066allocate.subx.html#L23'>Heap</a></span>/imm32
+<span id="L327" class="LineNr">327 </span>    <span class="subxS2Comment"># . . call</span>
+<span id="L328" class="LineNr">328 </span>    e8/call  <a href='handle.subx.html#L35'>new</a>/disp32
+<span id="L329" class="LineNr">329 </span>    <span class="subxS2Comment"># . . discard args</span>
+<span id="L330" class="LineNr">330 </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="L331" class="LineNr">331 </span>    <span class="subxComment"># check-ints-equal(h1-&gt;address, h2-&gt;address, msg)</span>
+<span id="L332" class="LineNr">332 </span>    <span class="subxS2Comment"># . . push args</span>
+<span id="L333" class="LineNr">333 </span>    68/push  <span class="Constant">&quot;F - test-lookup-failure&quot;</span>/imm32
+<span id="L334" class="LineNr">334 </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="L335" class="LineNr">335 </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="L336" class="LineNr">336 </span>    <span class="subxS2Comment"># . . call</span>
+<span id="L337" class="LineNr">337 </span>    e8/call  <a href='../051test.subx.html#L24'>check-ints-equal</a>/disp32
+<span id="L338" class="LineNr">338 </span>    <span class="subxS2Comment"># . . discard args</span>
+<span id="L339" class="LineNr">339 </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="L340" class="LineNr">340 </span>    <span class="subxComment"># lookup(h1) should crash</span>
+<span id="L341" class="LineNr">341 </span>    <span class="subxS2Comment"># . . push args</span>
+<span id="L342" class="LineNr">342 </span>    51/push-ECX
+<span id="L343" class="LineNr">343 </span>    <span class="subxS2Comment"># . . call</span>
+<span id="L344" class="LineNr">344 </span>    e8/call  <a href='handle.subx.html#L200'>lookup</a>/disp32
+<span id="L345" class="LineNr">345 </span>    <span class="subxComment"># should never get past this point</span>
+<span id="L346" class="LineNr">346 </span>    <span class="subxS2Comment"># . . discard args</span>
+<span id="L347" class="LineNr">347 </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="L348" class="LineNr">348 </span>    <span class="subxComment"># clean up</span>
+<span id="L349" class="LineNr">349 </span>    <span class="subxS1Comment"># . *Next-alloc-id = 1</span>
+<span id="L350" class="LineNr">350 </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#L363'>Next-alloc-id</a></span>/disp32  1/imm32           <span class="subxComment"># copy to *Next-alloc-id</span>
+<span id="L351" class="LineNr">351 </span>    <span class="subxS1Comment"># . restore registers</span>
+<span id="L352" class="LineNr">352 </span>    5a/pop-to-EDX
+<span id="L353" class="LineNr">353 </span>    59/pop-to-ECX
+<span id="L354" class="LineNr">354 </span>    58/pop-to-EAX
+<span id="L355" class="LineNr">355 </span>    <span class="subxS1Comment"># . epilog</span>
+<span id="L356" class="LineNr">356 </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="L357" class="LineNr">357 </span>    5d/pop-to-EBP
+<span id="L358" class="LineNr">358 </span>    c3/return
+<span id="L359" class="LineNr">359 </span>
+<span id="L360" class="LineNr">360 </span>== data
+<span id="L361" class="LineNr">361 </span>
+<span id="L362" class="LineNr">362 </span><span class="subxComment"># Monotonically increasing counter for calls to 'new'</span>
+<span id="L363" class="LineNr">363 </span><span class="SpecialChar">Next-alloc-id</span>:
+<span id="L364" class="LineNr">364 </span>    01 00 00 00  <span class="subxComment"># 1</span>
+<span id="L365" class="LineNr">365 </span>
+<span id="L366" class="LineNr">366 </span><span class="subxS2Comment"># . . vim&#0058;nowrap:textwidth=0</span>
 </pre>
 </body>
 </html>
diff --git a/subx/apps/handle b/subx/apps/handle
index 1e2c0e28..61558084 100755
--- a/subx/apps/handle
+++ b/subx/apps/handle
Binary files differdiff --git a/subx/apps/handle.subx b/subx/apps/handle.subx
index 406794a6..8a2b5d05 100644
--- a/subx/apps/handle.subx
+++ b/subx/apps/handle.subx
@@ -17,6 +17,8 @@
 #   $ ./subx run apps/handle
 # Expected result is a hard abort:
 #   ........lookup failed
+# (This file is a prototype, so the tests in this file aren't real tests. Don't
+# expect to run anything in the same process after they've completed.)
 
 == code
 #   instruction                     effective address                                                   register    displacement    immediate
@@ -78,25 +80,21 @@ $new:end:
     5d/pop-to-EBP
     c3/return
 
-test-new:  # - this test uses the bottom of the stack segment as scratch space
+test-new:
     # . prolog
     55/push-EBP
     89/copy                         3/mod/direct    5/rm32/EBP    .           .             .           4/r32/ESP   .               .                 # copy ESP to EBP
     # *Next-alloc-id = 0x34
     c7          0/subop/copy        0/mod/indirect  5/rm32/.disp32            .             .           .     Next-alloc-id/disp32  0x34/imm32        # copy to *Next-alloc-id
-    # var ad/EAX : (address allocation-descriptor) = {0x0b000000, 0x0b00000a}
-    68/push  0x0b00000a/imm32/limit
-    68/push  0x0b000000/imm32/curr
-    89/copy                         3/mod/direct    0/rm32/EAX    .           .             .           4/r32/ESP   .               .                 # copy ESP to EAX
     # var handle/ECX = {0, 0}
     68/push  0/imm32/address
     68/push  0/imm32/alloc-id
     89/copy                         3/mod/direct    1/rm32/ECX    .           .             .           4/r32/ESP   .               .                 # copy ESP to ECX
-    # new(ad, 2, handle/ECX)
+    # new(Heap, 2, handle/ECX)
     # . . push args
     51/push-ECX
     68/push  2/imm32/size
-    50/push-EAX
+    68/push  Heap/imm32
     # . . call
     e8/call  new/disp32
     # . . discard args
@@ -110,15 +108,6 @@ test-new:  # - this test uses the bottom of the stack segment as scratch space
     e8/call  check-ints-equal/disp32
     # . . discard args
     81          0/subop/add         3/mod/direct    4/rm32/ESP    .           .             .           .           .               0xc/imm32         # add to ESP
-    # check-ints-equal(handle->address, 0x0b000000, msg)
-    # . . push args
-    68/push  "F - test-new: address of handle"/imm32
-    68/push  0x0b000000/imm32
-    ff          6/subop/push        1/mod/*+disp8   1/rm32/ECX    .           .             .           .           4/disp8         .                 # push *(ECX+4)
-    # . . call
-    e8/call  check-ints-equal/disp32
-    # . . discard args
-    81          0/subop/add         3/mod/direct    4/rm32/ESP    .           .             .           .           .               0xc/imm32         # add to ESP
     # check-ints-equal(*handle->address, 0x34, msg)
     # . . push args
     68/push  "F - test-new: alloc id of payload"/imm32
@@ -140,7 +129,7 @@ test-new:  # - this test uses the bottom of the stack segment as scratch space
     81          0/subop/add         3/mod/direct    4/rm32/ESP    .           .             .           .           .               0xc/imm32         # add to ESP
     # clean up
     # . *Next-alloc-id = 1
-    c7          0/subop/copy        0/mod/direct    0/rm32/EAX    .           .             .           .           .               1/imm32           # copy to *EAX
+    c7          0/subop/copy        0/mod/indirect  5/rm32/.disp32            .             .           .     Next-alloc-id/disp32  1/imm32           # copy to *Next-alloc-id
     # . epilog
     89/copy                         3/mod/direct    4/rm32/ESP    .           .             .           5/r32/EBP   .               .                 # copy EBP to ESP
     5d/pop-to-EBP
@@ -202,7 +191,7 @@ test-new-failure:
     81          0/subop/add         3/mod/direct    4/rm32/ESP    .           .             .           .           .               0xc/imm32         # add to ESP
     # clean up
     # . *Next-alloc-id = 1
-    c7          0/subop/copy        0/mod/direct    0/rm32/EAX    .           .             .           .           .               1/imm32           # copy to *EAX
+    c7          0/subop/copy        0/mod/indirect  5/rm32/.disp32            .             .           .     Next-alloc-id/disp32  1/imm32           # copy to *Next-alloc-id
     # . epilog
     89/copy                         3/mod/direct    4/rm32/ESP    .           .             .           5/r32/EBP   .               .                 # copy EBP to ESP
     5d/pop-to-EBP
@@ -259,15 +248,13 @@ test-lookup-success:
     68/push  0/imm32/address
     68/push  0/imm32/alloc-id
     89/copy                         3/mod/direct    1/rm32/ECX    .           .             .           4/r32/ESP   .               .                 # copy ESP to ECX
-    # var ad/EAX : (address allocation-descriptor) = {0x0b000000, 0x0b000010}
-    68/push  0x0b000010/imm32/limit
-    68/push  0x0b000000/imm32/curr
-    89/copy                         3/mod/direct    0/rm32/EAX    .           .             .           4/r32/ESP   .               .                 # copy ESP to EAX
-    # new(ad, 2, handle)
+    # var old_top/EDX = Heap->curr
+    8b/copy                         0/mod/indirect  5/rm32/.disp32            .             .           2/r32/EDX   Heap/disp32     .                 # copy *Heap to EDX
+    # new(Heap, 2, handle)
     # . . push args
     51/push-ECX
     68/push  2/imm32/size
-    50/push-EAX
+    68/push  Heap/imm32
     # . . call
     e8/call  new/disp32
     # . . discard args
@@ -279,11 +266,12 @@ test-lookup-success:
     e8/call  lookup/disp32
     # . . discard args
     81          0/subop/add         3/mod/direct    4/rm32/ESP    .           .             .           .           .               4/imm32           # add to ESP
-    # EAX contains old ad->address, after skipping the alloc id in the payload
-    # . check-ints-equal(EAX, 0x0b000004, msg)
+    # EAX contains old top of Heap, except skipping the alloc id in the payload
+    # . check-ints-equal(EAX, old_top+4, msg)
     # . . push args
     68/push  "F - test-lookup-success"/imm32
-    68/push  0x0b000004/imm32
+    81          0/subop/add         3/mod/direct    2/rm32/EDX    .           .             .           .           .               4/imm32           # add to EDX
+    52/push-EDX
     50/push-EAX
     # . . call
     e8/call  check-ints-equal/disp32
@@ -291,7 +279,7 @@ test-lookup-success:
     81          0/subop/add         3/mod/direct    4/rm32/ESP    .           .             .           .           .               0xc/imm32         # add to ESP
     # clean up
     # . *Next-alloc-id = 1
-    c7          0/subop/copy        0/mod/direct    0/rm32/EAX    .           .             .           .           .               1/imm32           # copy to *EAX
+    c7          0/subop/copy        0/mod/indirect  5/rm32/.disp32            .             .           .     Next-alloc-id/disp32  1/imm32           # copy to *Next-alloc-id
     # . restore registers
     5a/pop-to-EDX
     59/pop-to-ECX
@@ -312,36 +300,43 @@ test-lookup-failure:
     68/push  0/imm32/address
     68/push  0/imm32/alloc-id
     89/copy                         3/mod/direct    1/rm32/ECX    .           .             .           4/r32/ESP   .               .                 # copy ESP to ECX
-    # var ad/EAX : (address allocation-descriptor) = {0x0b000000, 0x0b000010}
-    68/push  0x0b000010/imm32/limit
-    68/push  0x0b000000/imm32/curr
-    89/copy                         3/mod/direct    0/rm32/EAX    .           .             .           4/r32/ESP   .               .                 # copy ESP to EAX
+    # var old_top/EBX = Heap->curr
+    8b/copy                         0/mod/indirect  5/rm32/.disp32            .             .           3/r32/EBX   Heap/disp32     .                 # copy *Heap to EBX
     # first allocation, to h1
-    # . new(ad, 2, h1)
+    # . new(Heap, 2, h1)
     # . . push args
     51/push-ECX
     68/push  2/imm32/size
-    50/push-EAX
+    68/push  Heap/imm32
     # . . call
     e8/call  new/disp32
     # . . discard args
     81          0/subop/add         3/mod/direct    4/rm32/ESP    .           .             .           .           .               0xc/imm32         # add to ESP
-    # reset ad->curr to mimic reclamation
-    c7          0/subop/copy        0/mod/indirect  0/rm32/EAX    .           .             .           .           .               0x0b000000/imm32  # copy to *EAX
+    # reset Heap->curr to mimic reclamation
+    89/copy                         0/mod/indirect  5/rm32/.disp32            .             .           3/r32/EBX   Heap/disp32     .                 # copy EBX to *Heap
     # second allocation that returns the same address as the first
     # var h2/EDX = {0, 0}
     68/push  0/imm32/address
     68/push  0/imm32/alloc-id
     89/copy                         3/mod/direct    2/rm32/EDX    .           .             .           4/r32/ESP   .               .                 # copy ESP to EDX
-    # . new(ad, 2, h2)
+    # . new(Heap, 2, h2)
     # . . push args
     52/push-EDX
     68/push  2/imm32/size
-    50/push-EAX
+    68/push  Heap/imm32
     # . . call
     e8/call  new/disp32
     # . . discard args
     81          0/subop/add         3/mod/direct    4/rm32/ESP    .           .             .           .           .               0xc/imm32         # add to ESP
+    # check-ints-equal(h1->address, h2->address, msg)
+    # . . push args
+    68/push  "F - test-lookup-failure"/imm32
+    ff          6/subop/push        1/mod/*+disp8   2/rm32/ECX    .           .             .           .           4/disp8         .                 # push *(EDX+4)
+    ff          6/subop/push        1/mod/*+disp8   1/rm32/ECX    .           .             .           .           4/disp8         .                 # push *(ECX+4)
+    # . . call
+    e8/call  check-ints-equal/disp32
+    # . . discard args
+    81          0/subop/add         3/mod/direct    4/rm32/ESP    .           .             .           .           .               0xc/imm32         # add to ESP
     # lookup(h1) should crash
     # . . push args
     51/push-ECX
@@ -352,7 +347,7 @@ test-lookup-failure:
     81          0/subop/add         3/mod/direct    4/rm32/ESP    .           .             .           .           .               4/imm32           # add to ESP
     # clean up
     # . *Next-alloc-id = 1
-    c7          0/subop/copy        0/mod/direct    0/rm32/EAX    .           .             .           .           .               1/imm32           # copy to *EAX
+    c7          0/subop/copy        0/mod/indirect  5/rm32/.disp32            .             .           .     Next-alloc-id/disp32  1/imm32           # copy to *Next-alloc-id
     # . restore registers
     5a/pop-to-EDX
     59/pop-to-ECX
author	Kartik Agaram <vc@akkartik.com>	2018-12-30 21:01:35 -0800
committer	Kartik Agaram <vc@akkartik.com>	2018-12-30 21:01:35 -0800
commit	1ffb27a045c63217336e2c926058360e9521afc9 (patch)
tree	353ee70f7b29e00a9b1a7a55f396c611ffd53181
parent	901ae474300d70bcc00e7e0b420ca87c8cbf6f55 (diff)
download	mu-1ffb27a045c63217336e2c926058360e9521afc9.tar.gz