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authorKartik Agaram <vc@akkartik.com>2020-06-12 07:57:27 -0700
committerKartik Agaram <vc@akkartik.com>2020-06-12 07:57:38 -0700
commit86351aafe218a7386f6578be3c4da3edcdcb0c98 (patch)
tree209e27b8ad7ed2a8f733c699b278d19d0f59bf43 /html/060read.subx.html
parent07dba48f13be2aaa531b3d75a7d48d36e6ab4cb1 (diff)
downloadmu-86351aafe218a7386f6578be3c4da3edcdcb0c98.tar.gz
6513
Diffstat (limited to 'html/060read.subx.html')
-rw-r--r--html/060read.subx.html437
1 files changed, 218 insertions, 219 deletions
diff --git a/html/060read.subx.html b/html/060read.subx.html
index dee513d3..153aace7 100644
--- a/html/060read.subx.html
+++ b/html/060read.subx.html
@@ -279,225 +279,224 @@ if ('onhashchange' in window) {
 <span id="L218" class="LineNr">218 </span>    <span class="subxS2Comment"># . . size: edx = s-&gt;size - s-&gt;write</span>
 <span id="L219" class="LineNr">219 </span>    29/subtract                     3/mod/direct    2/rm32/edx   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>          0/r32/eax  <span class="Normal"> . </span>             <span class="Normal"> . </span>                <span class="subxComment"># subtract eax from edx</span>
 <span id="L220" class="LineNr">220 </span>    <span class="subxS2Comment"># . . syscall</span>
-<span id="L221" class="LineNr">221 </span>    b8/copy-to-eax  3/imm32/read
-<span id="L222" class="LineNr">222 </span>    cd/syscall  0x80/imm8
-<span id="L223" class="LineNr">223 </span>    <span class="subxComment"># add the result eax to s-&gt;write</span>
-<span id="L224" class="LineNr">224 </span>    01/add                          0/mod/indirect  6/rm32/esi   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>          0/r32/eax  <span class="Normal"> . </span>             <span class="Normal"> . </span>                <span class="subxComment"># add eax to *esi</span>
-<span id="L225" class="LineNr">225 </span><span class="Constant">$_read:end</span>:
-<span id="L226" class="LineNr">226 </span>    <span class="subxS1Comment"># . restore registers</span>
-<span id="L227" class="LineNr">227 </span>    5e/pop-to-esi
-<span id="L228" class="LineNr">228 </span>    5b/pop-to-ebx
-<span id="L229" class="LineNr">229 </span>    5a/pop-to-edx
-<span id="L230" class="LineNr">230 </span>    59/pop-to-ecx
-<span id="L231" class="LineNr">231 </span>    <span class="subxS1Comment"># . epilogue</span>
-<span id="L232" class="LineNr">232 </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="L233" class="LineNr">233 </span>    5d/pop-to-ebp
-<span id="L234" class="LineNr">234 </span>    c3/return
-<span id="L235" class="LineNr">235 </span>
-<span id="L236" class="LineNr">236 </span>    <span class="subxComment"># Two options:</span>
-<span id="L237" class="LineNr">237 </span>    <span class="subxComment">#   1 (what we have above):</span>
-<span id="L238" class="LineNr">238 </span>    <span class="subxComment">#     ecx = s</span>
-<span id="L239" class="LineNr">239 </span>    <span class="subxComment">#     eax = s-&gt;write</span>
-<span id="L240" class="LineNr">240 </span>    <span class="subxComment">#     edx = s-&gt;size</span>
-<span id="L241" class="LineNr">241 </span>    <span class="subxComment">#     # syscall</span>
-<span id="L242" class="LineNr">242 </span>    <span class="subxComment">#     ecx = lea ecx+eax+12</span>
-<span id="L243" class="LineNr">243 </span>    <span class="subxComment">#     edx = sub edx eax</span>
-<span id="L244" class="LineNr">244 </span>    <span class="subxComment">#</span>
-<span id="L245" class="LineNr">245 </span>    <span class="subxComment">#   2:</span>
-<span id="L246" class="LineNr">246 </span>    <span class="subxComment">#     ecx = s</span>
-<span id="L247" class="LineNr">247 </span>    <span class="subxComment">#     edx = s-&gt;size</span>
-<span id="L248" class="LineNr">248 </span>    <span class="subxComment">#     ecx = &amp;s-&gt;data</span>
-<span id="L249" class="LineNr">249 </span>    <span class="subxComment">#     # syscall</span>
-<span id="L250" class="LineNr">250 </span>    <span class="subxComment">#     ecx = add ecx, s-&gt;write</span>
-<span id="L251" class="LineNr">251 </span>    <span class="subxComment">#     edx = sub edx, s-&gt;write</span>
-<span id="L252" class="LineNr">252 </span>    <span class="subxComment">#</span>
-<span id="L253" class="LineNr">253 </span>    <span class="subxComment"># Not much to choose between the two? Option 2 performs a duplicate load to</span>
-<span id="L254" class="LineNr">254 </span>    <span class="subxComment"># use one less register, but doesn't increase the amount of spilling (ecx</span>
-<span id="L255" class="LineNr">255 </span>    <span class="subxComment"># and edx must be used, and eax must be clobbered anyway).</span>
-<span id="L256" class="LineNr">256 </span>
-<span id="L257" class="LineNr">257 </span><span class="subxH1Comment"># - tests</span>
-<span id="L258" class="LineNr">258 </span>
-<span id="L259" class="LineNr">259 </span><span class="subxTest">test-read-single</span>:
-<span id="L260" class="LineNr">260 </span>    <span class="subxH1Comment"># - write a single character into _test-stream, then read from it</span>
-<span id="L261" class="LineNr">261 </span>    <span class="subxComment"># clear-stream(_test-stream)</span>
-<span id="L262" class="LineNr">262 </span>    <span class="subxS2Comment"># . . push args</span>
-<span id="L263" class="LineNr">263 </span>    68/push  <a href='057write.subx.html#L148'>_test-stream</a>/imm32
-<span id="L264" class="LineNr">264 </span>    <span class="subxS2Comment"># . . call</span>
-<span id="L265" class="LineNr">265 </span>    e8/call  <a href='055stream.subx.html#L17'>clear-stream</a>/disp32
-<span id="L266" class="LineNr">266 </span>    <span class="subxS2Comment"># . . discard args</span>
-<span id="L267" class="LineNr">267 </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="L268" class="LineNr">268 </span>    <span class="subxComment"># clear-stream(_test-tmp-stream)</span>
-<span id="L269" class="LineNr">269 </span>    <span class="subxS2Comment"># . . push args</span>
-<span id="L270" class="LineNr">270 </span>    68/push  <a href='060read.subx.html#L429'>_test-tmp-stream</a>/imm32
-<span id="L271" class="LineNr">271 </span>    <span class="subxS2Comment"># . . call</span>
-<span id="L272" class="LineNr">272 </span>    e8/call  <a href='055stream.subx.html#L17'>clear-stream</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>              4/imm32           <span class="subxComment"># add to esp</span>
-<span id="L275" class="LineNr">275 </span>    <span class="subxComment"># write(_test-stream, &quot;Ab&quot;)</span>
-<span id="L276" class="LineNr">276 </span>    <span class="subxS2Comment"># . . push args</span>
-<span id="L277" class="LineNr">277 </span>    68/push  <span class="Constant">&quot;Ab&quot;</span>/imm32
-<span id="L278" class="LineNr">278 </span>    68/push  <a href='057write.subx.html#L148'>_test-stream</a>/imm32
-<span id="L279" class="LineNr">279 </span>    <span class="subxS2Comment"># . . call</span>
-<span id="L280" class="LineNr">280 </span>    e8/call  <a href='057write.subx.html#L24'>write</a>/disp32
-<span id="L281" class="LineNr">281 </span>    <span class="subxS2Comment"># . . discard args</span>
-<span id="L282" class="LineNr">282 </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="L283" class="LineNr">283 </span>    <span class="subxComment"># eax = read(_test-stream, _test-tmp-stream)</span>
-<span id="L284" class="LineNr">284 </span>    <span class="subxS2Comment"># . . push args</span>
-<span id="L285" class="LineNr">285 </span>    68/push  <a href='060read.subx.html#L429'>_test-tmp-stream</a>/imm32
-<span id="L286" class="LineNr">286 </span>    68/push  <a href='057write.subx.html#L148'>_test-stream</a>/imm32
-<span id="L287" class="LineNr">287 </span>    <span class="subxS2Comment"># . . call</span>
-<span id="L288" class="LineNr">288 </span>    e8/call  <a href='060read.subx.html#L48'>read</a>/disp32
-<span id="L289" class="LineNr">289 </span>    <span class="subxS2Comment"># . . discard args</span>
-<span id="L290" class="LineNr">290 </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="L291" class="LineNr">291 </span>    <span class="subxComment"># check-ints-equal(eax, 2, msg)</span>
-<span id="L292" class="LineNr">292 </span>    <span class="subxS2Comment"># . . push args</span>
-<span id="L293" class="LineNr">293 </span>    68/push  <span class="Constant">&quot;F - <a href='060read.subx.html#L259'>test-read-single</a>: return value&quot;</span>/imm32
-<span id="L294" class="LineNr">294 </span>    68/push  2/imm32
-<span id="L295" class="LineNr">295 </span>    50/push-eax
-<span id="L296" class="LineNr">296 </span>    <span class="subxS2Comment"># . . call</span>
-<span id="L297" class="LineNr">297 </span>    e8/call  <a href='051test.subx.html#L24'>check-ints-equal</a>/disp32
-<span id="L298" class="LineNr">298 </span>    <span class="subxS2Comment"># . . discard args</span>
-<span id="L299" class="LineNr">299 </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="L300" class="LineNr">300 </span>    <span class="subxComment"># check-stream-equal(_test-tmp-stream, &quot;Ab&quot;, msg)</span>
-<span id="L301" class="LineNr">301 </span>    <span class="subxS2Comment"># . . push args</span>
-<span id="L302" class="LineNr">302 </span>    68/push  <span class="Constant">&quot;F - test-read-single&quot;</span>/imm32
-<span id="L303" class="LineNr">303 </span>    68/push  <span class="Constant">&quot;Ab&quot;</span>/imm32
-<span id="L304" class="LineNr">304 </span>    68/push  <a href='060read.subx.html#L429'>_test-tmp-stream</a>/imm32
-<span id="L305" class="LineNr">305 </span>    <span class="subxS2Comment"># . . call</span>
-<span id="L306" class="LineNr">306 </span>    e8/call  <a href='058stream-equal.subx.html#L194'>check-stream-equal</a>/disp32
-<span id="L307" class="LineNr">307 </span>    <span class="subxS2Comment"># . . discard args</span>
-<span id="L308" class="LineNr">308 </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="L309" class="LineNr">309 </span>    <span class="subxComment"># end</span>
-<span id="L310" class="LineNr">310 </span>    c3/return
-<span id="L311" class="LineNr">311 </span>
-<span id="L312" class="LineNr">312 </span><span class="subxTest">test-read-is-stateful</span>:
-<span id="L313" class="LineNr">313 </span>    <span class="subxH1Comment"># - make two consecutive reads, check that their results are appended</span>
-<span id="L314" class="LineNr">314 </span>    <span class="subxComment"># clear-stream(_test-stream)</span>
-<span id="L315" class="LineNr">315 </span>    <span class="subxS2Comment"># . . push args</span>
-<span id="L316" class="LineNr">316 </span>    68/push  <a href='057write.subx.html#L148'>_test-stream</a>/imm32
-<span id="L317" class="LineNr">317 </span>    <span class="subxS2Comment"># . . call</span>
-<span id="L318" class="LineNr">318 </span>    e8/call  <a href='055stream.subx.html#L17'>clear-stream</a>/disp32
-<span id="L319" class="LineNr">319 </span>    <span class="subxS2Comment"># . . discard args</span>
-<span id="L320" class="LineNr">320 </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="L321" class="LineNr">321 </span>    <span class="subxComment"># clear-stream(_test-tmp-stream)</span>
-<span id="L322" class="LineNr">322 </span>    <span class="subxS2Comment"># . . push args</span>
-<span id="L323" class="LineNr">323 </span>    68/push  <a href='060read.subx.html#L429'>_test-tmp-stream</a>/imm32
-<span id="L324" class="LineNr">324 </span>    <span class="subxS2Comment"># . . call</span>
-<span id="L325" class="LineNr">325 </span>    e8/call  <a href='055stream.subx.html#L17'>clear-stream</a>/disp32
-<span id="L326" class="LineNr">326 </span>    <span class="subxS2Comment"># . . discard args</span>
-<span id="L327" class="LineNr">327 </span>    81          0/subop/add         3/mod/direct    4/rm32/esp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>         <span class="Normal"> . </span>              4/imm32           <span class="subxComment"># add to esp</span>
-<span id="L328" class="LineNr">328 </span>    <span class="subxComment"># write(_test-stream, &quot;C&quot;)</span>
-<span id="L329" class="LineNr">329 </span>    <span class="subxS2Comment"># . . push args</span>
-<span id="L330" class="LineNr">330 </span>    68/push  <span class="Constant">&quot;C&quot;</span>/imm32
-<span id="L331" class="LineNr">331 </span>    68/push  <a href='057write.subx.html#L148'>_test-stream</a>/imm32
-<span id="L332" class="LineNr">332 </span>    <span class="subxS2Comment"># . . call</span>
-<span id="L333" class="LineNr">333 </span>    e8/call  <a href='057write.subx.html#L24'>write</a>/disp32
-<span id="L334" class="LineNr">334 </span>    <span class="subxS2Comment"># . . discard args</span>
-<span id="L335" class="LineNr">335 </span>    81          0/subop/add         3/mod/direct    4/rm32/esp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>         <span class="Normal"> . </span>              8/imm32           <span class="subxComment"># add to esp</span>
-<span id="L336" class="LineNr">336 </span>    <span class="subxComment"># read(_test-stream, _test-tmp-stream)</span>
-<span id="L337" class="LineNr">337 </span>    <span class="subxS2Comment"># . . push args</span>
-<span id="L338" class="LineNr">338 </span>    68/push  <a href='060read.subx.html#L429'>_test-tmp-stream</a>/imm32
-<span id="L339" class="LineNr">339 </span>    68/push  <a href='057write.subx.html#L148'>_test-stream</a>/imm32
-<span id="L340" class="LineNr">340 </span>    <span class="subxS2Comment"># . . call</span>
-<span id="L341" class="LineNr">341 </span>    e8/call  <a href='060read.subx.html#L48'>read</a>/disp32
-<span id="L342" class="LineNr">342 </span>    <span class="subxS2Comment"># . . discard args</span>
-<span id="L343" class="LineNr">343 </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="L344" class="LineNr">344 </span>    <span class="subxComment"># write(_test-stream, &quot;D&quot;)</span>
-<span id="L345" class="LineNr">345 </span>    <span class="subxS2Comment"># . . push args</span>
-<span id="L346" class="LineNr">346 </span>    68/push  <span class="Constant">&quot;D&quot;</span>/imm32
-<span id="L347" class="LineNr">347 </span>    68/push  <a href='057write.subx.html#L148'>_test-stream</a>/imm32
-<span id="L348" class="LineNr">348 </span>    <span class="subxS2Comment"># . . call</span>
-<span id="L349" class="LineNr">349 </span>    e8/call  <a href='057write.subx.html#L24'>write</a>/disp32
-<span id="L350" class="LineNr">350 </span>    <span class="subxS2Comment"># . . discard args</span>
-<span id="L351" class="LineNr">351 </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="L352" class="LineNr">352 </span>    <span class="subxComment"># read(_test-stream, _test-tmp-stream)</span>
-<span id="L353" class="LineNr">353 </span>    <span class="subxS2Comment"># . . push args</span>
-<span id="L354" class="LineNr">354 </span>    68/push  <a href='060read.subx.html#L429'>_test-tmp-stream</a>/imm32
-<span id="L355" class="LineNr">355 </span>    68/push  <a href='057write.subx.html#L148'>_test-stream</a>/imm32
-<span id="L356" class="LineNr">356 </span>    <span class="subxS2Comment"># . . call</span>
-<span id="L357" class="LineNr">357 </span>    e8/call  <a href='060read.subx.html#L48'>read</a>/disp32
-<span id="L358" class="LineNr">358 </span>    <span class="subxS2Comment"># . . discard args</span>
-<span id="L359" class="LineNr">359 </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="L360" class="LineNr">360 </span>    <span class="subxComment"># check-stream-equal(_test-tmp-stream, &quot;CD&quot;, msg)</span>
-<span id="L361" class="LineNr">361 </span>    <span class="subxS2Comment"># . . push args</span>
-<span id="L362" class="LineNr">362 </span>    68/push  <span class="Constant">&quot;F - test-read-is-stateful&quot;</span>/imm32
-<span id="L363" class="LineNr">363 </span>    68/push  <span class="Constant">&quot;CD&quot;</span>/imm32
-<span id="L364" class="LineNr">364 </span>    68/push  <a href='060read.subx.html#L429'>_test-tmp-stream</a>/imm32
-<span id="L365" class="LineNr">365 </span>    <span class="subxS2Comment"># . . call</span>
-<span id="L366" class="LineNr">366 </span>    e8/call  <a href='058stream-equal.subx.html#L194'>check-stream-equal</a>/disp32
-<span id="L367" class="LineNr">367 </span>    <span class="subxS2Comment"># . . discard args</span>
-<span id="L368" class="LineNr">368 </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="L369" class="LineNr">369 </span>    <span class="subxComment"># end</span>
-<span id="L370" class="LineNr">370 </span>    c3/return
-<span id="L371" class="LineNr">371 </span>
-<span id="L372" class="LineNr">372 </span><span class="subxTest">test-read-returns-0-on-end-of-file</span>:
-<span id="L373" class="LineNr">373 </span>    <span class="subxH1Comment"># - read after hitting end-of-file, check that result is 0</span>
-<span id="L374" class="LineNr">374 </span>    <span class="subxComment"># setup</span>
-<span id="L375" class="LineNr">375 </span>    <span class="subxS1Comment"># . clear-stream(_test-stream)</span>
-<span id="L376" class="LineNr">376 </span>    <span class="subxS2Comment"># . . push args</span>
-<span id="L377" class="LineNr">377 </span>    68/push  <a href='057write.subx.html#L148'>_test-stream</a>/imm32
-<span id="L378" class="LineNr">378 </span>    <span class="subxS2Comment"># . . call</span>
-<span id="L379" class="LineNr">379 </span>    e8/call  <a href='055stream.subx.html#L17'>clear-stream</a>/disp32
-<span id="L380" class="LineNr">380 </span>    <span class="subxS2Comment"># . . discard args</span>
-<span id="L381" class="LineNr">381 </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="L382" class="LineNr">382 </span>    <span class="subxS1Comment"># . clear-stream(_test-tmp-stream)</span>
-<span id="L383" class="LineNr">383 </span>    <span class="subxS2Comment"># . . push args</span>
-<span id="L384" class="LineNr">384 </span>    68/push  <a href='060read.subx.html#L429'>_test-tmp-stream</a>/imm32
-<span id="L385" class="LineNr">385 </span>    <span class="subxS2Comment"># . . call</span>
-<span id="L386" class="LineNr">386 </span>    e8/call  <a href='055stream.subx.html#L17'>clear-stream</a>/disp32
-<span id="L387" class="LineNr">387 </span>    <span class="subxS2Comment"># . . discard args</span>
-<span id="L388" class="LineNr">388 </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="L389" class="LineNr">389 </span>    <span class="subxS1Comment"># . write(_test-stream, &quot;Ab&quot;)</span>
-<span id="L390" class="LineNr">390 </span>    <span class="subxS2Comment"># . . push args</span>
-<span id="L391" class="LineNr">391 </span>    68/push  <span class="Constant">&quot;Ab&quot;</span>/imm32
-<span id="L392" class="LineNr">392 </span>    68/push  <a href='057write.subx.html#L148'>_test-stream</a>/imm32
-<span id="L393" class="LineNr">393 </span>    <span class="subxS2Comment"># . . call</span>
-<span id="L394" class="LineNr">394 </span>    e8/call  <a href='057write.subx.html#L24'>write</a>/disp32
-<span id="L395" class="LineNr">395 </span>    <span class="subxS2Comment"># . . discard args</span>
-<span id="L396" class="LineNr">396 </span>    81          0/subop/add         3/mod/direct    4/rm32/esp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>         <span class="Normal"> . </span>              8/imm32           <span class="subxComment"># add to esp</span>
-<span id="L397" class="LineNr">397 </span>    <span class="subxComment"># first read gets to end-of-file</span>
-<span id="L398" class="LineNr">398 </span>    <span class="subxS1Comment"># . read(_test-stream, _test-tmp-stream)</span>
-<span id="L399" class="LineNr">399 </span>    <span class="subxS2Comment"># . . push args</span>
-<span id="L400" class="LineNr">400 </span>    68/push  <a href='060read.subx.html#L429'>_test-tmp-stream</a>/imm32
-<span id="L401" class="LineNr">401 </span>    68/push  <a href='057write.subx.html#L148'>_test-stream</a>/imm32
-<span id="L402" class="LineNr">402 </span>    <span class="subxS2Comment"># . . call</span>
-<span id="L403" class="LineNr">403 </span>    e8/call  <a href='060read.subx.html#L48'>read</a>/disp32
-<span id="L404" class="LineNr">404 </span>    <span class="subxS2Comment"># . . discard args</span>
-<span id="L405" class="LineNr">405 </span>    81          0/subop/add         3/mod/direct    4/rm32/esp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>         <span class="Normal"> . </span>              8/imm32           <span class="subxComment"># add to esp</span>
-<span id="L406" class="LineNr">406 </span>    <span class="subxComment"># second read</span>
-<span id="L407" class="LineNr">407 </span>    <span class="subxS1Comment"># . read(_test-stream, _test-tmp-stream)</span>
-<span id="L408" class="LineNr">408 </span>    <span class="subxS2Comment"># . . push args</span>
-<span id="L409" class="LineNr">409 </span>    68/push  <a href='060read.subx.html#L429'>_test-tmp-stream</a>/imm32
-<span id="L410" class="LineNr">410 </span>    68/push  <a href='057write.subx.html#L148'>_test-stream</a>/imm32
-<span id="L411" class="LineNr">411 </span>    <span class="subxS2Comment"># . . call</span>
-<span id="L412" class="LineNr">412 </span>    e8/call  <a href='060read.subx.html#L48'>read</a>/disp32
-<span id="L413" class="LineNr">413 </span>    <span class="subxS2Comment"># . . discard args</span>
-<span id="L414" class="LineNr">414 </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="L415" class="LineNr">415 </span>    <span class="subxComment"># check-ints-equal(eax, 0, msg)</span>
-<span id="L416" class="LineNr">416 </span>    <span class="subxS2Comment"># . . push args</span>
-<span id="L417" class="LineNr">417 </span>    68/push  <span class="Constant">&quot;F - test-read-returns-0-on-end-of-file&quot;</span>/imm32
-<span id="L418" class="LineNr">418 </span>    68/push  0/imm32
-<span id="L419" class="LineNr">419 </span>    50/push-eax
-<span id="L420" class="LineNr">420 </span>    <span class="subxS2Comment"># . . call</span>
-<span id="L421" class="LineNr">421 </span>    e8/call  <a href='051test.subx.html#L24'>check-ints-equal</a>/disp32
-<span id="L422" class="LineNr">422 </span>    <span class="subxS2Comment"># . . discard args</span>
-<span id="L423" class="LineNr">423 </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="L424" class="LineNr">424 </span>    <span class="subxComment"># end</span>
-<span id="L425" class="LineNr">425 </span>    c3/return
-<span id="L426" class="LineNr">426 </span>
-<span id="L427" class="LineNr">427 </span>== data
-<span id="L428" class="LineNr">428 </span>
-<span id="L429" class="LineNr">429 </span><span class="subxMinorFunction">_test-tmp-stream</span>:  <span class="subxComment"># (stream byte)</span>
-<span id="L430" class="LineNr">430 </span>    <span class="subxComment"># current write index</span>
-<span id="L431" class="LineNr">431 </span>    0/imm32
-<span id="L432" class="LineNr">432 </span>    <span class="subxComment"># current read index</span>
-<span id="L433" class="LineNr">433 </span>    0/imm32
-<span id="L434" class="LineNr">434 </span>    <span class="subxComment"># size</span>
-<span id="L435" class="LineNr">435 </span>    8/imm32
-<span id="L436" class="LineNr">436 </span>    <span class="subxComment"># data</span>
-<span id="L437" class="LineNr">437 </span>    00 00 00 00 00 00 00 00  <span class="subxComment"># 8 bytes</span>
-<span id="L438" class="LineNr">438 </span>
-<span id="L439" class="LineNr">439 </span><span class="subxS2Comment"># . . vim&#0058;nowrap:textwidth=0</span>
+<span id="L221" class="LineNr">221 </span>    e8/call  syscall_read/disp32
+<span id="L222" class="LineNr">222 </span>    <span class="subxComment"># add the result eax to s-&gt;write</span>
+<span id="L223" class="LineNr">223 </span>    01/add                          0/mod/indirect  6/rm32/esi   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>          0/r32/eax  <span class="Normal"> . </span>             <span class="Normal"> . </span>                <span class="subxComment"># add eax to *esi</span>
+<span id="L224" class="LineNr">224 </span><span class="Constant">$_read:end</span>:
+<span id="L225" class="LineNr">225 </span>    <span class="subxS1Comment"># . restore registers</span>
+<span id="L226" class="LineNr">226 </span>    5e/pop-to-esi
+<span id="L227" class="LineNr">227 </span>    5b/pop-to-ebx
+<span id="L228" class="LineNr">228 </span>    5a/pop-to-edx
+<span id="L229" class="LineNr">229 </span>    59/pop-to-ecx
+<span id="L230" class="LineNr">230 </span>    <span class="subxS1Comment"># . epilogue</span>
+<span id="L231" class="LineNr">231 </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="L232" class="LineNr">232 </span>    5d/pop-to-ebp
+<span id="L233" class="LineNr">233 </span>    c3/return
+<span id="L234" class="LineNr">234 </span>
+<span id="L235" class="LineNr">235 </span>    <span class="subxComment"># Two options:</span>
+<span id="L236" class="LineNr">236 </span>    <span class="subxComment">#   1 (what we have above):</span>
+<span id="L237" class="LineNr">237 </span>    <span class="subxComment">#     ecx = s</span>
+<span id="L238" class="LineNr">238 </span>    <span class="subxComment">#     eax = s-&gt;write</span>
+<span id="L239" class="LineNr">239 </span>    <span class="subxComment">#     edx = s-&gt;size</span>
+<span id="L240" class="LineNr">240 </span>    <span class="subxComment">#     # syscall</span>
+<span id="L241" class="LineNr">241 </span>    <span class="subxComment">#     ecx = lea ecx+eax+12</span>
+<span id="L242" class="LineNr">242 </span>    <span class="subxComment">#     edx = sub edx eax</span>
+<span id="L243" class="LineNr">243 </span>    <span class="subxComment">#</span>
+<span id="L244" class="LineNr">244 </span>    <span class="subxComment">#   2:</span>
+<span id="L245" class="LineNr">245 </span>    <span class="subxComment">#     ecx = s</span>
+<span id="L246" class="LineNr">246 </span>    <span class="subxComment">#     edx = s-&gt;size</span>
+<span id="L247" class="LineNr">247 </span>    <span class="subxComment">#     ecx = &amp;s-&gt;data</span>
+<span id="L248" class="LineNr">248 </span>    <span class="subxComment">#     # syscall</span>
+<span id="L249" class="LineNr">249 </span>    <span class="subxComment">#     ecx = add ecx, s-&gt;write</span>
+<span id="L250" class="LineNr">250 </span>    <span class="subxComment">#     edx = sub edx, s-&gt;write</span>
+<span id="L251" class="LineNr">251 </span>    <span class="subxComment">#</span>
+<span id="L252" class="LineNr">252 </span>    <span class="subxComment"># Not much to choose between the two? Option 2 performs a duplicate load to</span>
+<span id="L253" class="LineNr">253 </span>    <span class="subxComment"># use one less register, but doesn't increase the amount of spilling (ecx</span>
+<span id="L254" class="LineNr">254 </span>    <span class="subxComment"># and edx must be used, and eax must be clobbered anyway).</span>
+<span id="L255" class="LineNr">255 </span>
+<span id="L256" class="LineNr">256 </span><span class="subxH1Comment"># - tests</span>
+<span id="L257" class="LineNr">257 </span>
+<span id="L258" class="LineNr">258 </span><span class="subxTest">test-read-single</span>:
+<span id="L259" class="LineNr">259 </span>    <span class="subxH1Comment"># - write a single character into _test-stream, then read from it</span>
+<span id="L260" class="LineNr">260 </span>    <span class="subxComment"># clear-stream(_test-stream)</span>
+<span id="L261" class="LineNr">261 </span>    <span class="subxS2Comment"># . . push args</span>
+<span id="L262" class="LineNr">262 </span>    68/push  <a href='057write.subx.html#L148'>_test-stream</a>/imm32
+<span id="L263" class="LineNr">263 </span>    <span class="subxS2Comment"># . . call</span>
+<span id="L264" class="LineNr">264 </span>    e8/call  <a href='055stream.subx.html#L17'>clear-stream</a>/disp32
+<span id="L265" class="LineNr">265 </span>    <span class="subxS2Comment"># . . discard args</span>
+<span id="L266" class="LineNr">266 </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="L267" class="LineNr">267 </span>    <span class="subxComment"># clear-stream(_test-tmp-stream)</span>
+<span id="L268" class="LineNr">268 </span>    <span class="subxS2Comment"># . . push args</span>
+<span id="L269" class="LineNr">269 </span>    68/push  <a href='060read.subx.html#L428'>_test-tmp-stream</a>/imm32
+<span id="L270" class="LineNr">270 </span>    <span class="subxS2Comment"># . . call</span>
+<span id="L271" class="LineNr">271 </span>    e8/call  <a href='055stream.subx.html#L17'>clear-stream</a>/disp32
+<span id="L272" class="LineNr">272 </span>    <span class="subxS2Comment"># . . discard args</span>
+<span id="L273" class="LineNr">273 </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="L274" class="LineNr">274 </span>    <span class="subxComment"># write(_test-stream, &quot;Ab&quot;)</span>
+<span id="L275" class="LineNr">275 </span>    <span class="subxS2Comment"># . . push args</span>
+<span id="L276" class="LineNr">276 </span>    68/push  <span class="Constant">&quot;Ab&quot;</span>/imm32
+<span id="L277" class="LineNr">277 </span>    68/push  <a href='057write.subx.html#L148'>_test-stream</a>/imm32
+<span id="L278" class="LineNr">278 </span>    <span class="subxS2Comment"># . . call</span>
+<span id="L279" class="LineNr">279 </span>    e8/call  <a href='057write.subx.html#L24'>write</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>              8/imm32           <span class="subxComment"># add to esp</span>
+<span id="L282" class="LineNr">282 </span>    <span class="subxComment"># eax = read(_test-stream, _test-tmp-stream)</span>
+<span id="L283" class="LineNr">283 </span>    <span class="subxS2Comment"># . . push args</span>
+<span id="L284" class="LineNr">284 </span>    68/push  <a href='060read.subx.html#L428'>_test-tmp-stream</a>/imm32
+<span id="L285" class="LineNr">285 </span>    68/push  <a href='057write.subx.html#L148'>_test-stream</a>/imm32
+<span id="L286" class="LineNr">286 </span>    <span class="subxS2Comment"># . . call</span>
+<span id="L287" class="LineNr">287 </span>    e8/call  <a href='060read.subx.html#L48'>read</a>/disp32
+<span id="L288" class="LineNr">288 </span>    <span class="subxS2Comment"># . . discard args</span>
+<span id="L289" class="LineNr">289 </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="L290" class="LineNr">290 </span>    <span class="subxComment"># check-ints-equal(eax, 2, msg)</span>
+<span id="L291" class="LineNr">291 </span>    <span class="subxS2Comment"># . . push args</span>
+<span id="L292" class="LineNr">292 </span>    68/push  <span class="Constant">&quot;F - <a href='060read.subx.html#L258'>test-read-single</a>: return value&quot;</span>/imm32
+<span id="L293" class="LineNr">293 </span>    68/push  2/imm32
+<span id="L294" class="LineNr">294 </span>    50/push-eax
+<span id="L295" class="LineNr">295 </span>    <span class="subxS2Comment"># . . call</span>
+<span id="L296" class="LineNr">296 </span>    e8/call  <a href='051test.subx.html#L23'>check-ints-equal</a>/disp32
+<span id="L297" class="LineNr">297 </span>    <span class="subxS2Comment"># . . discard args</span>
+<span id="L298" class="LineNr">298 </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="L299" class="LineNr">299 </span>    <span class="subxComment"># check-stream-equal(_test-tmp-stream, &quot;Ab&quot;, msg)</span>
+<span id="L300" class="LineNr">300 </span>    <span class="subxS2Comment"># . . push args</span>
+<span id="L301" class="LineNr">301 </span>    68/push  <span class="Constant">&quot;F - test-read-single&quot;</span>/imm32
+<span id="L302" class="LineNr">302 </span>    68/push  <span class="Constant">&quot;Ab&quot;</span>/imm32
+<span id="L303" class="LineNr">303 </span>    68/push  <a href='060read.subx.html#L428'>_test-tmp-stream</a>/imm32
+<span id="L304" class="LineNr">304 </span>    <span class="subxS2Comment"># . . call</span>
+<span id="L305" class="LineNr">305 </span>    e8/call  <a href='058stream-equal.subx.html#L194'>check-stream-equal</a>/disp32
+<span id="L306" class="LineNr">306 </span>    <span class="subxS2Comment"># . . discard args</span>
+<span id="L307" class="LineNr">307 </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="L308" class="LineNr">308 </span>    <span class="subxComment"># end</span>
+<span id="L309" class="LineNr">309 </span>    c3/return
+<span id="L310" class="LineNr">310 </span>
+<span id="L311" class="LineNr">311 </span><span class="subxTest">test-read-is-stateful</span>:
+<span id="L312" class="LineNr">312 </span>    <span class="subxH1Comment"># - make two consecutive reads, check that their results are appended</span>
+<span id="L313" class="LineNr">313 </span>    <span class="subxComment"># clear-stream(_test-stream)</span>
+<span id="L314" class="LineNr">314 </span>    <span class="subxS2Comment"># . . push args</span>
+<span id="L315" class="LineNr">315 </span>    68/push  <a href='057write.subx.html#L148'>_test-stream</a>/imm32
+<span id="L316" class="LineNr">316 </span>    <span class="subxS2Comment"># . . call</span>
+<span id="L317" class="LineNr">317 </span>    e8/call  <a href='055stream.subx.html#L17'>clear-stream</a>/disp32
+<span id="L318" class="LineNr">318 </span>    <span class="subxS2Comment"># . . discard args</span>
+<span id="L319" class="LineNr">319 </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="L320" class="LineNr">320 </span>    <span class="subxComment"># clear-stream(_test-tmp-stream)</span>
+<span id="L321" class="LineNr">321 </span>    <span class="subxS2Comment"># . . push args</span>
+<span id="L322" class="LineNr">322 </span>    68/push  <a href='060read.subx.html#L428'>_test-tmp-stream</a>/imm32
+<span id="L323" class="LineNr">323 </span>    <span class="subxS2Comment"># . . call</span>
+<span id="L324" class="LineNr">324 </span>    e8/call  <a href='055stream.subx.html#L17'>clear-stream</a>/disp32
+<span id="L325" class="LineNr">325 </span>    <span class="subxS2Comment"># . . discard args</span>
+<span id="L326" class="LineNr">326 </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="L327" class="LineNr">327 </span>    <span class="subxComment"># write(_test-stream, &quot;C&quot;)</span>
+<span id="L328" class="LineNr">328 </span>    <span class="subxS2Comment"># . . push args</span>
+<span id="L329" class="LineNr">329 </span>    68/push  <span class="Constant">&quot;C&quot;</span>/imm32
+<span id="L330" class="LineNr">330 </span>    68/push  <a href='057write.subx.html#L148'>_test-stream</a>/imm32
+<span id="L331" class="LineNr">331 </span>    <span class="subxS2Comment"># . . call</span>
+<span id="L332" class="LineNr">332 </span>    e8/call  <a href='057write.subx.html#L24'>write</a>/disp32
+<span id="L333" class="LineNr">333 </span>    <span class="subxS2Comment"># . . discard args</span>
+<span id="L334" class="LineNr">334 </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="L335" class="LineNr">335 </span>    <span class="subxComment"># read(_test-stream, _test-tmp-stream)</span>
+<span id="L336" class="LineNr">336 </span>    <span class="subxS2Comment"># . . push args</span>
+<span id="L337" class="LineNr">337 </span>    68/push  <a href='060read.subx.html#L428'>_test-tmp-stream</a>/imm32
+<span id="L338" class="LineNr">338 </span>    68/push  <a href='057write.subx.html#L148'>_test-stream</a>/imm32
+<span id="L339" class="LineNr">339 </span>    <span class="subxS2Comment"># . . call</span>
+<span id="L340" class="LineNr">340 </span>    e8/call  <a href='060read.subx.html#L48'>read</a>/disp32
+<span id="L341" class="LineNr">341 </span>    <span class="subxS2Comment"># . . discard args</span>
+<span id="L342" class="LineNr">342 </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="L343" class="LineNr">343 </span>    <span class="subxComment"># write(_test-stream, &quot;D&quot;)</span>
+<span id="L344" class="LineNr">344 </span>    <span class="subxS2Comment"># . . push args</span>
+<span id="L345" class="LineNr">345 </span>    68/push  <span class="Constant">&quot;D&quot;</span>/imm32
+<span id="L346" class="LineNr">346 </span>    68/push  <a href='057write.subx.html#L148'>_test-stream</a>/imm32
+<span id="L347" class="LineNr">347 </span>    <span class="subxS2Comment"># . . call</span>
+<span id="L348" class="LineNr">348 </span>    e8/call  <a href='057write.subx.html#L24'>write</a>/disp32
+<span id="L349" class="LineNr">349 </span>    <span class="subxS2Comment"># . . discard args</span>
+<span id="L350" class="LineNr">350 </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="L351" class="LineNr">351 </span>    <span class="subxComment"># read(_test-stream, _test-tmp-stream)</span>
+<span id="L352" class="LineNr">352 </span>    <span class="subxS2Comment"># . . push args</span>
+<span id="L353" class="LineNr">353 </span>    68/push  <a href='060read.subx.html#L428'>_test-tmp-stream</a>/imm32
+<span id="L354" class="LineNr">354 </span>    68/push  <a href='057write.subx.html#L148'>_test-stream</a>/imm32
+<span id="L355" class="LineNr">355 </span>    <span class="subxS2Comment"># . . call</span>
+<span id="L356" class="LineNr">356 </span>    e8/call  <a href='060read.subx.html#L48'>read</a>/disp32
+<span id="L357" class="LineNr">357 </span>    <span class="subxS2Comment"># . . discard args</span>
+<span id="L358" class="LineNr">358 </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="L359" class="LineNr">359 </span>    <span class="subxComment"># check-stream-equal(_test-tmp-stream, &quot;CD&quot;, msg)</span>
+<span id="L360" class="LineNr">360 </span>    <span class="subxS2Comment"># . . push args</span>
+<span id="L361" class="LineNr">361 </span>    68/push  <span class="Constant">&quot;F - test-read-is-stateful&quot;</span>/imm32
+<span id="L362" class="LineNr">362 </span>    68/push  <span class="Constant">&quot;CD&quot;</span>/imm32
+<span id="L363" class="LineNr">363 </span>    68/push  <a href='060read.subx.html#L428'>_test-tmp-stream</a>/imm32
+<span id="L364" class="LineNr">364 </span>    <span class="subxS2Comment"># . . call</span>
+<span id="L365" class="LineNr">365 </span>    e8/call  <a href='058stream-equal.subx.html#L194'>check-stream-equal</a>/disp32
+<span id="L366" class="LineNr">366 </span>    <span class="subxS2Comment"># . . discard args</span>
+<span id="L367" class="LineNr">367 </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="L368" class="LineNr">368 </span>    <span class="subxComment"># end</span>
+<span id="L369" class="LineNr">369 </span>    c3/return
+<span id="L370" class="LineNr">370 </span>
+<span id="L371" class="LineNr">371 </span><span class="subxTest">test-read-returns-0-on-end-of-file</span>:
+<span id="L372" class="LineNr">372 </span>    <span class="subxH1Comment"># - read after hitting end-of-file, check that result is 0</span>
+<span id="L373" class="LineNr">373 </span>    <span class="subxComment"># setup</span>
+<span id="L374" class="LineNr">374 </span>    <span class="subxS1Comment"># . clear-stream(_test-stream)</span>
+<span id="L375" class="LineNr">375 </span>    <span class="subxS2Comment"># . . push args</span>
+<span id="L376" class="LineNr">376 </span>    68/push  <a href='057write.subx.html#L148'>_test-stream</a>/imm32
+<span id="L377" class="LineNr">377 </span>    <span class="subxS2Comment"># . . call</span>
+<span id="L378" class="LineNr">378 </span>    e8/call  <a href='055stream.subx.html#L17'>clear-stream</a>/disp32
+<span id="L379" class="LineNr">379 </span>    <span class="subxS2Comment"># . . discard args</span>
+<span id="L380" class="LineNr">380 </span>    81          0/subop/add         3/mod/direct    4/rm32/esp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>         <span class="Normal"> . </span>              4/imm32           <span class="subxComment"># add to esp</span>
+<span id="L381" class="LineNr">381 </span>    <span class="subxS1Comment"># . clear-stream(_test-tmp-stream)</span>
+<span id="L382" class="LineNr">382 </span>    <span class="subxS2Comment"># . . push args</span>
+<span id="L383" class="LineNr">383 </span>    68/push  <a href='060read.subx.html#L428'>_test-tmp-stream</a>/imm32
+<span id="L384" class="LineNr">384 </span>    <span class="subxS2Comment"># . . call</span>
+<span id="L385" class="LineNr">385 </span>    e8/call  <a href='055stream.subx.html#L17'>clear-stream</a>/disp32
+<span id="L386" class="LineNr">386 </span>    <span class="subxS2Comment"># . . discard args</span>
+<span id="L387" class="LineNr">387 </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="L388" class="LineNr">388 </span>    <span class="subxS1Comment"># . write(_test-stream, &quot;Ab&quot;)</span>
+<span id="L389" class="LineNr">389 </span>    <span class="subxS2Comment"># . . push args</span>
+<span id="L390" class="LineNr">390 </span>    68/push  <span class="Constant">&quot;Ab&quot;</span>/imm32
+<span id="L391" class="LineNr">391 </span>    68/push  <a href='057write.subx.html#L148'>_test-stream</a>/imm32
+<span id="L392" class="LineNr">392 </span>    <span class="subxS2Comment"># . . call</span>
+<span id="L393" class="LineNr">393 </span>    e8/call  <a href='057write.subx.html#L24'>write</a>/disp32
+<span id="L394" class="LineNr">394 </span>    <span class="subxS2Comment"># . . discard args</span>
+<span id="L395" class="LineNr">395 </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="L396" class="LineNr">396 </span>    <span class="subxComment"># first read gets to end-of-file</span>
+<span id="L397" class="LineNr">397 </span>    <span class="subxS1Comment"># . read(_test-stream, _test-tmp-stream)</span>
+<span id="L398" class="LineNr">398 </span>    <span class="subxS2Comment"># . . push args</span>
+<span id="L399" class="LineNr">399 </span>    68/push  <a href='060read.subx.html#L428'>_test-tmp-stream</a>/imm32
+<span id="L400" class="LineNr">400 </span>    68/push  <a href='057write.subx.html#L148'>_test-stream</a>/imm32
+<span id="L401" class="LineNr">401 </span>    <span class="subxS2Comment"># . . call</span>
+<span id="L402" class="LineNr">402 </span>    e8/call  <a href='060read.subx.html#L48'>read</a>/disp32
+<span id="L403" class="LineNr">403 </span>    <span class="subxS2Comment"># . . discard args</span>
+<span id="L404" class="LineNr">404 </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="L405" class="LineNr">405 </span>    <span class="subxComment"># second read</span>
+<span id="L406" class="LineNr">406 </span>    <span class="subxS1Comment"># . read(_test-stream, _test-tmp-stream)</span>
+<span id="L407" class="LineNr">407 </span>    <span class="subxS2Comment"># . . push args</span>
+<span id="L408" class="LineNr">408 </span>    68/push  <a href='060read.subx.html#L428'>_test-tmp-stream</a>/imm32
+<span id="L409" class="LineNr">409 </span>    68/push  <a href='057write.subx.html#L148'>_test-stream</a>/imm32
+<span id="L410" class="LineNr">410 </span>    <span class="subxS2Comment"># . . call</span>
+<span id="L411" class="LineNr">411 </span>    e8/call  <a href='060read.subx.html#L48'>read</a>/disp32
+<span id="L412" class="LineNr">412 </span>    <span class="subxS2Comment"># . . discard args</span>
+<span id="L413" class="LineNr">413 </span>    81          0/subop/add         3/mod/direct    4/rm32/esp   <span class="Normal"> . </span>         <span class="Normal"> . </span>           <span class="Normal"> . </span>         <span class="Normal"> . </span>         <span class="Normal"> . </span>              8/imm32           <span class="subxComment"># add to esp</span>
+<span id="L414" class="LineNr">414 </span>    <span class="subxComment"># check-ints-equal(eax, 0, msg)</span>
+<span id="L415" class="LineNr">415 </span>    <span class="subxS2Comment"># . . push args</span>
+<span id="L416" class="LineNr">416 </span>    68/push  <span class="Constant">&quot;F - test-read-returns-0-on-end-of-file&quot;</span>/imm32
+<span id="L417" class="LineNr">417 </span>    68/push  0/imm32
+<span id="L418" class="LineNr">418 </span>    50/push-eax
+<span id="L419" class="LineNr">419 </span>    <span class="subxS2Comment"># . . call</span>
+<span id="L420" class="LineNr">420 </span>    e8/call  <a href='051test.subx.html#L23'>check-ints-equal</a>/disp32
+<span id="L421" class="LineNr">421 </span>    <span class="subxS2Comment"># . . discard args</span>
+<span id="L422" class="LineNr">422 </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="L423" class="LineNr">423 </span>    <span class="subxComment"># end</span>
+<span id="L424" class="LineNr">424 </span>    c3/return
+<span id="L425" class="LineNr">425 </span>
+<span id="L426" class="LineNr">426 </span>== data
+<span id="L427" class="LineNr">427 </span>
+<span id="L428" class="LineNr">428 </span><span class="subxMinorFunction">_test-tmp-stream</span>:  <span class="subxComment"># (stream byte)</span>
+<span id="L429" class="LineNr">429 </span>    <span class="subxComment"># current write index</span>
+<span id="L430" class="LineNr">430 </span>    0/imm32
+<span id="L431" class="LineNr">431 </span>    <span class="subxComment"># current read index</span>
+<span id="L432" class="LineNr">432 </span>    0/imm32
+<span id="L433" class="LineNr">433 </span>    <span class="subxComment"># size</span>
+<span id="L434" class="LineNr">434 </span>    8/imm32
+<span id="L435" class="LineNr">435 </span>    <span class="subxComment"># data</span>
+<span id="L436" class="LineNr">436 </span>    00 00 00 00 00 00 00 00  <span class="subxComment"># 8 bytes</span>
+<span id="L437" class="LineNr">437 </span>
+<span id="L438" class="LineNr">438 </span><span class="subxS2Comment"># . . vim&#0058;nowrap:textwidth=0</span>
 </pre>
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