diff options
| author | Kartik Agaram <vc@akkartik.com> | 2019-12-09 01:26:58 -0800 |
|---|---|---|
| committer | Kartik Agaram <vc@akkartik.com> | 2019-12-09 01:26:58 -0800 |
| commit | 8aeb85f04ee68b960a6d326aca1a17dec2f6d019 (patch) | |
| tree | 26f861361c28ca77fb8298b21a905dc6e06c91ef /html/060read.subx.html | |
| parent | 2249e605c19f0dbe0c34c1c4f635b802f56dc535 (diff) | |
| download | mu-8aeb85f04ee68b960a6d326aca1a17dec2f6d019.tar.gz | |
5806
Diffstat (limited to 'html/060read.subx.html')
| -rw-r--r-- | html/060read.subx.html | 497 |
1 files changed, 248 insertions, 249 deletions
diff --git a/html/060read.subx.html b/html/060read.subx.html index 886514a2..235389fa 100644 --- a/html/060read.subx.html +++ b/html/060read.subx.html @@ -106,7 +106,7 @@ if ('onhashchange' in window) { <span id="L45" class="LineNr"> 45 </span><span class="subxS1Comment"># . op subop mod rm32 base index scale r32</span> <span id="L46" class="LineNr"> 46 </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="L47" class="LineNr"> 47 </span> -<span id="L48" class="LineNr"> 48 </span><span class="subxFunction">read</span>: <span class="subxComment"># f : fd or (address stream), s : (address stream) -> num-bytes-read/eax</span> +<span id="L48" class="LineNr"> 48 </span><span class="subxFunction">read</span>: <span class="subxComment"># f : fd or (address stream byte), s : (address stream byte) -> num-bytes-read/eax : int</span> <span id="L49" class="LineNr"> 49 </span> <span class="subxS1Comment"># . prologue</span> <span id="L50" class="LineNr"> 50 </span> 55/push-ebp <span id="L51" class="LineNr"> 51 </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> @@ -117,7 +117,7 @@ if ('onhashchange' in window) { <span id="L56" class="LineNr"> 56 </span> ff 6/subop/push 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0xc/disp8 <span class="Normal"> . </span> <span class="subxComment"># push *(ebp+12)</span> <span id="L57" class="LineNr"> 57 </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="L58" class="LineNr"> 58 </span> <span class="subxS2Comment"># . . call</span> -<span id="L59" class="LineNr"> 59 </span> e8/call <a href='060read.subx.html#L199'>_read</a>/disp32 +<span id="L59" class="LineNr"> 59 </span> e8/call <a href='060read.subx.html#L198'>_read</a>/disp32 <span id="L60" class="LineNr"> 60 </span> <span class="subxS2Comment"># . . discard args</span> <span id="L61" class="LineNr"> 61 </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="L62" class="LineNr"> 62 </span> <span class="subxComment"># return</span> @@ -252,253 +252,252 @@ if ('onhashchange' in window) { <span id="L191" class="LineNr">191 </span> 5d/pop-to-ebp <span id="L192" class="LineNr">192 </span> c3/return <span id="L193" class="LineNr">193 </span> -<span id="L194" class="LineNr">194 </span> -<span id="L195" class="LineNr">195 </span><span class="subxComment"># idea: a clear-if-empty method on streams that clears only if f->read == f->write</span> -<span id="L196" class="LineNr">196 </span><span class="subxComment"># Unclear how I'd use it, though. Callers seem to need the check anyway.</span> -<span id="L197" class="LineNr">197 </span><span class="subxComment"># Maybe a better helper would be 'empty-stream?'</span> -<span id="L198" class="LineNr">198 </span> -<span id="L199" class="LineNr">199 </span><span class="subxMinorFunction">_read</span>: <span class="subxComment"># fd : int, s : (address stream) -> num-bytes-read/eax</span> -<span id="L200" class="LineNr">200 </span> <span class="subxS1Comment"># . prologue</span> -<span id="L201" class="LineNr">201 </span> 55/push-ebp -<span id="L202" class="LineNr">202 </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="L203" class="LineNr">203 </span> <span class="subxS1Comment"># . save registers</span> -<span id="L204" class="LineNr">204 </span> 51/push-ecx -<span id="L205" class="LineNr">205 </span> 52/push-edx -<span id="L206" class="LineNr">206 </span> 53/push-ebx -<span id="L207" class="LineNr">207 </span> 56/push-esi -<span id="L208" class="LineNr">208 </span> <span class="subxComment"># esi = s</span> -<span id="L209" class="LineNr">209 </span> 8b/copy 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 6/r32/esi 0xc/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy *(ebp+12) to esi</span> -<span id="L210" class="LineNr">210 </span> <span class="subxComment"># eax = s->write</span> -<span id="L211" class="LineNr">211 </span> 8b/copy 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"># copy *esi to eax</span> -<span id="L212" class="LineNr">212 </span> <span class="subxComment"># edx = s->length</span> -<span id="L213" class="LineNr">213 </span> 8b/copy 1/mod/*+disp8 6/rm32/esi <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 2/r32/edx 8/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy *(esi+8) to edx</span> -<span id="L214" class="LineNr">214 </span> <span class="subxComment"># syscall(read, fd, &s->data[s->write], s->length - s->write)</span> -<span id="L215" class="LineNr">215 </span> <span class="subxS2Comment"># . . fd : ebx</span> -<span id="L216" class="LineNr">216 </span> 8b/copy 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 3/r32/ebx 8/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy *(ebp+8) to ebx</span> -<span id="L217" class="LineNr">217 </span> <span class="subxS2Comment"># . . data : ecx = &s->data[s->write]</span> -<span id="L218" class="LineNr">218 </span> 8d/copy-address 1/mod/*+disp8 4/rm32/sib 6/base/esi 0/index/eax <span class="Normal"> . </span> 1/r32/ecx 0xc/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy esi+eax+12 to ecx</span> -<span id="L219" class="LineNr">219 </span> <span class="subxS2Comment"># . . size : edx = s->length - s->write</span> -<span id="L220" class="LineNr">220 </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="L221" class="LineNr">221 </span> <span class="subxS2Comment"># . . syscall</span> -<span id="L222" class="LineNr">222 </span> b8/copy-to-eax 3/imm32/read -<span id="L223" class="LineNr">223 </span> cd/syscall 0x80/imm8 -<span id="L224" class="LineNr">224 </span> <span class="subxComment"># add the result eax to s->write</span> -<span id="L225" class="LineNr">225 </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="L226" class="LineNr">226 </span><span class="Constant">$_read:end</span>: -<span id="L227" class="LineNr">227 </span> <span class="subxS1Comment"># . restore registers</span> -<span id="L228" class="LineNr">228 </span> 5e/pop-to-esi -<span id="L229" class="LineNr">229 </span> 5b/pop-to-ebx -<span id="L230" class="LineNr">230 </span> 5a/pop-to-edx -<span id="L231" class="LineNr">231 </span> 59/pop-to-ecx -<span id="L232" class="LineNr">232 </span> <span class="subxS1Comment"># . epilogue</span> -<span id="L233" class="LineNr">233 </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="L234" class="LineNr">234 </span> 5d/pop-to-ebp -<span id="L235" class="LineNr">235 </span> c3/return -<span id="L236" class="LineNr">236 </span> -<span id="L237" class="LineNr">237 </span> <span class="subxComment"># Two options:</span> -<span id="L238" class="LineNr">238 </span> <span class="subxComment"># 1 (what we have above):</span> -<span id="L239" class="LineNr">239 </span> <span class="subxComment"># ecx = s</span> -<span id="L240" class="LineNr">240 </span> <span class="subxComment"># eax = s->write</span> -<span id="L241" class="LineNr">241 </span> <span class="subxComment"># edx = s->length</span> -<span id="L242" class="LineNr">242 </span> <span class="subxComment"># # syscall</span> -<span id="L243" class="LineNr">243 </span> <span class="subxComment"># ecx = lea ecx+eax+12</span> -<span id="L244" class="LineNr">244 </span> <span class="subxComment"># edx = sub edx eax</span> -<span id="L245" class="LineNr">245 </span> <span class="subxComment">#</span> -<span id="L246" class="LineNr">246 </span> <span class="subxComment"># 2:</span> -<span id="L247" class="LineNr">247 </span> <span class="subxComment"># ecx = s</span> -<span id="L248" class="LineNr">248 </span> <span class="subxComment"># edx = s->length</span> -<span id="L249" class="LineNr">249 </span> <span class="subxComment"># ecx = &s->data</span> -<span id="L250" class="LineNr">250 </span> <span class="subxComment"># # syscall</span> -<span id="L251" class="LineNr">251 </span> <span class="subxComment"># ecx = add ecx, s->write</span> -<span id="L252" class="LineNr">252 </span> <span class="subxComment"># edx = sub edx, s->write</span> -<span id="L253" class="LineNr">253 </span> <span class="subxComment">#</span> -<span id="L254" class="LineNr">254 </span> <span class="subxComment"># Not much to choose between the two? Option 2 performs a duplicate load to</span> -<span id="L255" class="LineNr">255 </span> <span class="subxComment"># use one less register, but doesn't increase the amount of spilling (ecx</span> -<span id="L256" class="LineNr">256 </span> <span class="subxComment"># and edx must be used, and eax must be clobbered anyway).</span> -<span id="L257" class="LineNr">257 </span> -<span id="L258" class="LineNr">258 </span><span class="subxH1Comment"># - tests</span> -<span id="L259" class="LineNr">259 </span> -<span id="L260" class="LineNr">260 </span><span class="subxTest">test-read-single</span>: -<span id="L261" class="LineNr">261 </span> <span class="subxH1Comment"># - write a single character into _test-stream, then read from it</span> -<span id="L262" class="LineNr">262 </span> <span class="subxComment"># clear-stream(_test-stream)</span> -<span id="L263" class="LineNr">263 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L264" class="LineNr">264 </span> 68/push <a href='057write.subx.html#L148'>_test-stream</a>/imm32 -<span id="L265" class="LineNr">265 </span> <span class="subxS2Comment"># . . call</span> -<span id="L266" class="LineNr">266 </span> e8/call <a href='055stream.subx.html#L17'>clear-stream</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"># clear-stream(_test-tmp-stream)</span> -<span id="L270" class="LineNr">270 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L271" class="LineNr">271 </span> 68/push <a href='060read.subx.html#L430'>_test-tmp-stream</a>/imm32 -<span id="L272" class="LineNr">272 </span> <span class="subxS2Comment"># . . call</span> -<span id="L273" class="LineNr">273 </span> e8/call <a href='055stream.subx.html#L17'>clear-stream</a>/disp32 -<span id="L274" class="LineNr">274 </span> <span class="subxS2Comment"># . . discard args</span> -<span id="L275" class="LineNr">275 </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="L276" class="LineNr">276 </span> <span class="subxComment"># write(_test-stream, "Ab")</span> -<span id="L277" class="LineNr">277 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L278" class="LineNr">278 </span> 68/push <span class="Constant">"Ab"</span>/imm32 -<span id="L279" class="LineNr">279 </span> 68/push <a href='057write.subx.html#L148'>_test-stream</a>/imm32 -<span id="L280" class="LineNr">280 </span> <span class="subxS2Comment"># . . call</span> -<span id="L281" class="LineNr">281 </span> e8/call <a href='057write.subx.html#L24'>write</a>/disp32 -<span id="L282" class="LineNr">282 </span> <span class="subxS2Comment"># . . discard args</span> -<span id="L283" class="LineNr">283 </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="L284" class="LineNr">284 </span> <span class="subxComment"># eax = read(_test-stream, _test-tmp-stream)</span> -<span id="L285" class="LineNr">285 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L286" class="LineNr">286 </span> 68/push <a href='060read.subx.html#L430'>_test-tmp-stream</a>/imm32 -<span id="L287" class="LineNr">287 </span> 68/push <a href='057write.subx.html#L148'>_test-stream</a>/imm32 -<span id="L288" class="LineNr">288 </span> <span class="subxS2Comment"># . . call</span> -<span id="L289" class="LineNr">289 </span> e8/call <a href='060read.subx.html#L48'>read</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> 8/imm32 <span class="subxComment"># add to esp</span> -<span id="L292" class="LineNr">292 </span> <span class="subxComment"># check-ints-equal(eax, 2, msg)</span> -<span id="L293" class="LineNr">293 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L294" class="LineNr">294 </span> 68/push <span class="Constant">"F - <a href='060read.subx.html#L260'>test-read-single</a>: return value"</span>/imm32 -<span id="L295" class="LineNr">295 </span> 68/push 2/imm32 -<span id="L296" class="LineNr">296 </span> 50/push-eax -<span id="L297" class="LineNr">297 </span> <span class="subxS2Comment"># . . call</span> -<span id="L298" class="LineNr">298 </span> e8/call <a href='051test.subx.html#L24'>check-ints-equal</a>/disp32 -<span id="L299" class="LineNr">299 </span> <span class="subxS2Comment"># . . discard args</span> -<span id="L300" class="LineNr">300 </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="L301" class="LineNr">301 </span> <span class="subxComment"># check-stream-equal(_test-tmp-stream, "Ab", msg)</span> -<span id="L302" class="LineNr">302 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L303" class="LineNr">303 </span> 68/push <span class="Constant">"F - test-read-single"</span>/imm32 -<span id="L304" class="LineNr">304 </span> 68/push <span class="Constant">"Ab"</span>/imm32 -<span id="L305" class="LineNr">305 </span> 68/push <a href='060read.subx.html#L430'>_test-tmp-stream</a>/imm32 -<span id="L306" class="LineNr">306 </span> <span class="subxS2Comment"># . . call</span> -<span id="L307" class="LineNr">307 </span> e8/call <a href='058stream-equal.subx.html#L193'>check-stream-equal</a>/disp32 -<span id="L308" class="LineNr">308 </span> <span class="subxS2Comment"># . . discard args</span> -<span id="L309" class="LineNr">309 </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="L310" class="LineNr">310 </span> <span class="subxComment"># end</span> -<span id="L311" class="LineNr">311 </span> c3/return -<span id="L312" class="LineNr">312 </span> -<span id="L313" class="LineNr">313 </span><span class="subxTest">test-read-is-stateful</span>: -<span id="L314" class="LineNr">314 </span> <span class="subxH1Comment"># - make two consecutive reads, check that their results are appended</span> -<span id="L315" class="LineNr">315 </span> <span class="subxComment"># clear-stream(_test-stream)</span> -<span id="L316" class="LineNr">316 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L317" class="LineNr">317 </span> 68/push <a href='057write.subx.html#L148'>_test-stream</a>/imm32 -<span id="L318" class="LineNr">318 </span> <span class="subxS2Comment"># . . call</span> -<span id="L319" class="LineNr">319 </span> e8/call <a href='055stream.subx.html#L17'>clear-stream</a>/disp32 -<span id="L320" class="LineNr">320 </span> <span class="subxS2Comment"># . . discard args</span> -<span id="L321" class="LineNr">321 </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="L322" class="LineNr">322 </span> <span class="subxComment"># clear-stream(_test-tmp-stream)</span> -<span id="L323" class="LineNr">323 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L324" class="LineNr">324 </span> 68/push <a href='060read.subx.html#L430'>_test-tmp-stream</a>/imm32 -<span id="L325" class="LineNr">325 </span> <span class="subxS2Comment"># . . call</span> -<span id="L326" class="LineNr">326 </span> e8/call <a href='055stream.subx.html#L17'>clear-stream</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> 4/imm32 <span class="subxComment"># add to esp</span> -<span id="L329" class="LineNr">329 </span> <span class="subxComment"># write(_test-stream, "C")</span> -<span id="L330" class="LineNr">330 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L331" class="LineNr">331 </span> 68/push <span class="Constant">"C"</span>/imm32 -<span id="L332" class="LineNr">332 </span> 68/push <a href='057write.subx.html#L148'>_test-stream</a>/imm32 -<span id="L333" class="LineNr">333 </span> <span class="subxS2Comment"># . . call</span> -<span id="L334" class="LineNr">334 </span> e8/call <a href='057write.subx.html#L24'>write</a>/disp32 -<span id="L335" class="LineNr">335 </span> <span class="subxS2Comment"># . . discard args</span> -<span id="L336" class="LineNr">336 </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="L337" class="LineNr">337 </span> <span class="subxComment"># read(_test-stream, _test-tmp-stream)</span> -<span id="L338" class="LineNr">338 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L339" class="LineNr">339 </span> 68/push <a href='060read.subx.html#L430'>_test-tmp-stream</a>/imm32 -<span id="L340" class="LineNr">340 </span> 68/push <a href='057write.subx.html#L148'>_test-stream</a>/imm32 -<span id="L341" class="LineNr">341 </span> <span class="subxS2Comment"># . . call</span> -<span id="L342" class="LineNr">342 </span> e8/call <a href='060read.subx.html#L48'>read</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> 8/imm32 <span class="subxComment"># add to esp</span> -<span id="L345" class="LineNr">345 </span> <span class="subxComment"># write(_test-stream, "D")</span> -<span id="L346" class="LineNr">346 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L347" class="LineNr">347 </span> 68/push <span class="Constant">"D"</span>/imm32 -<span id="L348" class="LineNr">348 </span> 68/push <a href='057write.subx.html#L148'>_test-stream</a>/imm32 -<span id="L349" class="LineNr">349 </span> <span class="subxS2Comment"># . . call</span> -<span id="L350" class="LineNr">350 </span> e8/call <a href='057write.subx.html#L24'>write</a>/disp32 -<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> 8/imm32 <span class="subxComment"># add to esp</span> -<span id="L353" class="LineNr">353 </span> <span class="subxComment"># read(_test-stream, _test-tmp-stream)</span> -<span id="L354" class="LineNr">354 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L355" class="LineNr">355 </span> 68/push <a href='060read.subx.html#L430'>_test-tmp-stream</a>/imm32 -<span id="L356" class="LineNr">356 </span> 68/push <a href='057write.subx.html#L148'>_test-stream</a>/imm32 -<span id="L357" class="LineNr">357 </span> <span class="subxS2Comment"># . . call</span> -<span id="L358" class="LineNr">358 </span> e8/call <a href='060read.subx.html#L48'>read</a>/disp32 -<span id="L359" class="LineNr">359 </span> <span class="subxS2Comment"># . . discard args</span> -<span id="L360" class="LineNr">360 </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="L361" class="LineNr">361 </span> <span class="subxComment"># check-stream-equal(_test-tmp-stream, "CD", msg)</span> -<span id="L362" class="LineNr">362 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L363" class="LineNr">363 </span> 68/push <span class="Constant">"F - test-read-is-stateful"</span>/imm32 -<span id="L364" class="LineNr">364 </span> 68/push <span class="Constant">"CD"</span>/imm32 -<span id="L365" class="LineNr">365 </span> 68/push <a href='060read.subx.html#L430'>_test-tmp-stream</a>/imm32 -<span id="L366" class="LineNr">366 </span> <span class="subxS2Comment"># . . call</span> -<span id="L367" class="LineNr">367 </span> e8/call <a href='058stream-equal.subx.html#L193'>check-stream-equal</a>/disp32 -<span id="L368" class="LineNr">368 </span> <span class="subxS2Comment"># . . discard args</span> -<span id="L369" class="LineNr">369 </span> 81 0/subop/add 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0xc/imm32 <span class="subxComment"># add to esp</span> -<span id="L370" class="LineNr">370 </span> <span class="subxComment"># end</span> -<span id="L371" class="LineNr">371 </span> c3/return -<span id="L372" class="LineNr">372 </span> -<span id="L373" class="LineNr">373 </span><span class="subxTest">test-read-returns-0-on-end-of-file</span>: -<span id="L374" class="LineNr">374 </span> <span class="subxH1Comment"># - read after hitting end-of-file, check that result is 0</span> -<span id="L375" class="LineNr">375 </span> <span class="subxComment"># setup</span> -<span id="L376" class="LineNr">376 </span> <span class="subxS1Comment"># . clear-stream(_test-stream)</span> -<span id="L377" class="LineNr">377 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L378" class="LineNr">378 </span> 68/push <a href='057write.subx.html#L148'>_test-stream</a>/imm32 -<span id="L379" class="LineNr">379 </span> <span class="subxS2Comment"># . . call</span> -<span id="L380" class="LineNr">380 </span> e8/call <a href='055stream.subx.html#L17'>clear-stream</a>/disp32 -<span id="L381" class="LineNr">381 </span> <span class="subxS2Comment"># . . discard args</span> -<span id="L382" class="LineNr">382 </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="L383" class="LineNr">383 </span> <span class="subxS1Comment"># . clear-stream(_test-tmp-stream)</span> -<span id="L384" class="LineNr">384 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L385" class="LineNr">385 </span> 68/push <a href='060read.subx.html#L430'>_test-tmp-stream</a>/imm32 -<span id="L386" class="LineNr">386 </span> <span class="subxS2Comment"># . . call</span> -<span id="L387" class="LineNr">387 </span> e8/call <a href='055stream.subx.html#L17'>clear-stream</a>/disp32 -<span id="L388" class="LineNr">388 </span> <span class="subxS2Comment"># . . discard args</span> -<span id="L389" class="LineNr">389 </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="L390" class="LineNr">390 </span> <span class="subxS1Comment"># . write(_test-stream, "Ab")</span> -<span id="L391" class="LineNr">391 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L392" class="LineNr">392 </span> 68/push <span class="Constant">"Ab"</span>/imm32 -<span id="L393" class="LineNr">393 </span> 68/push <a href='057write.subx.html#L148'>_test-stream</a>/imm32 -<span id="L394" class="LineNr">394 </span> <span class="subxS2Comment"># . . call</span> -<span id="L395" class="LineNr">395 </span> e8/call <a href='057write.subx.html#L24'>write</a>/disp32 -<span id="L396" class="LineNr">396 </span> <span class="subxS2Comment"># . . discard args</span> -<span id="L397" class="LineNr">397 </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="L398" class="LineNr">398 </span> <span class="subxComment"># first read gets to end-of-file</span> -<span id="L399" class="LineNr">399 </span> <span class="subxS1Comment"># . read(_test-stream, _test-tmp-stream)</span> -<span id="L400" class="LineNr">400 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L401" class="LineNr">401 </span> 68/push <a href='060read.subx.html#L430'>_test-tmp-stream</a>/imm32 -<span id="L402" class="LineNr">402 </span> 68/push <a href='057write.subx.html#L148'>_test-stream</a>/imm32 -<span id="L403" class="LineNr">403 </span> <span class="subxS2Comment"># . . call</span> -<span id="L404" class="LineNr">404 </span> e8/call <a href='060read.subx.html#L48'>read</a>/disp32 -<span id="L405" class="LineNr">405 </span> <span class="subxS2Comment"># . . discard args</span> -<span id="L406" class="LineNr">406 </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="L407" class="LineNr">407 </span> <span class="subxComment"># second read</span> -<span id="L408" class="LineNr">408 </span> <span class="subxS1Comment"># . read(_test-stream, _test-tmp-stream)</span> -<span id="L409" class="LineNr">409 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L410" class="LineNr">410 </span> 68/push <a href='060read.subx.html#L430'>_test-tmp-stream</a>/imm32 -<span id="L411" class="LineNr">411 </span> 68/push <a href='057write.subx.html#L148'>_test-stream</a>/imm32 -<span id="L412" class="LineNr">412 </span> <span class="subxS2Comment"># . . call</span> -<span id="L413" class="LineNr">413 </span> e8/call <a href='060read.subx.html#L48'>read</a>/disp32 -<span id="L414" class="LineNr">414 </span> <span class="subxS2Comment"># . . discard args</span> -<span id="L415" class="LineNr">415 </span> 81 0/subop/add 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 8/imm32 <span class="subxComment"># add to esp</span> -<span id="L416" class="LineNr">416 </span> <span class="subxComment"># check-ints-equal(eax, 0, msg)</span> -<span id="L417" class="LineNr">417 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L418" class="LineNr">418 </span> 68/push <span class="Constant">"F - test-read-returns-0-on-end-of-file"</span>/imm32 -<span id="L419" class="LineNr">419 </span> 68/push 0/imm32 -<span id="L420" class="LineNr">420 </span> 50/push-eax -<span id="L421" class="LineNr">421 </span> <span class="subxS2Comment"># . . call</span> -<span id="L422" class="LineNr">422 </span> e8/call <a href='051test.subx.html#L24'>check-ints-equal</a>/disp32 -<span id="L423" class="LineNr">423 </span> <span class="subxS2Comment"># . . discard args</span> -<span id="L424" class="LineNr">424 </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="L425" class="LineNr">425 </span> <span class="subxComment"># end</span> -<span id="L426" class="LineNr">426 </span> c3/return -<span id="L427" class="LineNr">427 </span> -<span id="L428" class="LineNr">428 </span>== data -<span id="L429" class="LineNr">429 </span> -<span id="L430" class="LineNr">430 </span><span class="subxMinorFunction">_test-tmp-stream</span>: -<span id="L431" class="LineNr">431 </span> <span class="subxComment"># current write index</span> -<span id="L432" class="LineNr">432 </span> 0/imm32 -<span id="L433" class="LineNr">433 </span> <span class="subxComment"># current read index</span> -<span id="L434" class="LineNr">434 </span> 0/imm32 -<span id="L435" class="LineNr">435 </span> <span class="subxComment"># length</span> -<span id="L436" class="LineNr">436 </span> 8/imm32 -<span id="L437" class="LineNr">437 </span> <span class="subxComment"># data</span> -<span id="L438" class="LineNr">438 </span> 00 00 00 00 00 00 00 00 <span class="subxComment"># 8 bytes</span> -<span id="L439" class="LineNr">439 </span> -<span id="L440" class="LineNr">440 </span><span class="subxS2Comment"># . . vim:nowrap:textwidth=0</span> +<span id="L194" class="LineNr">194 </span><span class="subxComment"># idea: a clear-if-empty method on streams that clears only if f->read == f->write</span> +<span id="L195" class="LineNr">195 </span><span class="subxComment"># Unclear how I'd use it, though. Callers seem to need the check anyway.</span> +<span id="L196" class="LineNr">196 </span><span class="subxComment"># Maybe a better helper would be 'empty-stream?'</span> +<span id="L197" class="LineNr">197 </span> +<span id="L198" class="LineNr">198 </span><span class="subxMinorFunction">_read</span>: <span class="subxComment"># fd : int, s : (address stream byte) -> num-bytes-read/eax : int</span> +<span id="L199" class="LineNr">199 </span> <span class="subxS1Comment"># . prologue</span> +<span id="L200" class="LineNr">200 </span> 55/push-ebp +<span id="L201" class="LineNr">201 </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="L202" class="LineNr">202 </span> <span class="subxS1Comment"># . save registers</span> +<span id="L203" class="LineNr">203 </span> 51/push-ecx +<span id="L204" class="LineNr">204 </span> 52/push-edx +<span id="L205" class="LineNr">205 </span> 53/push-ebx +<span id="L206" class="LineNr">206 </span> 56/push-esi +<span id="L207" class="LineNr">207 </span> <span class="subxComment"># esi = s</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> 6/r32/esi 0xc/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy *(ebp+12) to esi</span> +<span id="L209" class="LineNr">209 </span> <span class="subxComment"># eax = s->write</span> +<span id="L210" class="LineNr">210 </span> 8b/copy 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"># copy *esi to eax</span> +<span id="L211" class="LineNr">211 </span> <span class="subxComment"># edx = s->length</span> +<span id="L212" class="LineNr">212 </span> 8b/copy 1/mod/*+disp8 6/rm32/esi <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 2/r32/edx 8/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy *(esi+8) to edx</span> +<span id="L213" class="LineNr">213 </span> <span class="subxComment"># syscall(read, fd, &s->data[s->write], s->length - s->write)</span> +<span id="L214" class="LineNr">214 </span> <span class="subxS2Comment"># . . fd : ebx</span> +<span id="L215" class="LineNr">215 </span> 8b/copy 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 3/r32/ebx 8/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy *(ebp+8) to ebx</span> +<span id="L216" class="LineNr">216 </span> <span class="subxS2Comment"># . . data : ecx = &s->data[s->write]</span> +<span id="L217" class="LineNr">217 </span> 8d/copy-address 1/mod/*+disp8 4/rm32/sib 6/base/esi 0/index/eax <span class="Normal"> . </span> 1/r32/ecx 0xc/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy esi+eax+12 to ecx</span> +<span id="L218" class="LineNr">218 </span> <span class="subxS2Comment"># . . size : edx = s->length - s->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->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->write</span> +<span id="L240" class="LineNr">240 </span> <span class="subxComment"># edx = s->length</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->length</span> +<span id="L248" class="LineNr">248 </span> <span class="subxComment"># ecx = &s->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->write</span> +<span id="L251" class="LineNr">251 </span> <span class="subxComment"># edx = sub edx, s->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, "Ab")</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">"Ab"</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">"F - <a href='060read.subx.html#L259'>test-read-single</a>: return value"</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, "Ab", 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">"F - test-read-single"</span>/imm32 +<span id="L303" class="LineNr">303 </span> 68/push <span class="Constant">"Ab"</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, "C")</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">"C"</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, "D")</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">"D"</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, "CD", 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">"F - test-read-is-stateful"</span>/imm32 +<span id="L363" class="LineNr">363 </span> 68/push <span class="Constant">"CD"</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, "Ab")</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">"Ab"</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">"F - test-read-returns-0-on-end-of-file"</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"># (ref 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"># length</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:nowrap:textwidth=0</span> </pre> </body> </html> |