diff options
Diffstat (limited to 'html/092stack.subx.html')
| -rw-r--r-- | html/092stack.subx.html | 517 |
1 files changed, 257 insertions, 260 deletions
diff --git a/html/092stack.subx.html b/html/092stack.subx.html index 7fa5461a..69df5b8a 100644 --- a/html/092stack.subx.html +++ b/html/092stack.subx.html @@ -129,7 +129,7 @@ if ('onhashchange' in window) { <span id="L69" class="LineNr"> 69 </span> 68/push 0/imm32 <span id="L70" class="LineNr"> 70 </span> 50/push-eax <span id="L71" class="LineNr"> 71 </span> <span class="subxS2Comment"># . . call</span> -<span id="L72" class="LineNr"> 72 </span> e8/call <a href='051test.subx.html#L24'>check-ints-equal</a>/disp32 +<span id="L72" class="LineNr"> 72 </span> e8/call <a href='051test.subx.html#L23'>check-ints-equal</a>/disp32 <span id="L73" class="LineNr"> 73 </span> <span class="subxS2Comment"># . . discard args</span> <span id="L74" class="LineNr"> 74 </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="L75" class="LineNr"> 75 </span> <span class="subxComment"># size should remain 8</span> @@ -140,7 +140,7 @@ if ('onhashchange' in window) { <span id="L80" class="LineNr"> 80 </span> 68/push 8/imm32 <span id="L81" class="LineNr"> 81 </span> 50/push-eax <span id="L82" class="LineNr"> 82 </span> <span class="subxS2Comment"># . . call</span> -<span id="L83" class="LineNr"> 83 </span> e8/call <a href='051test.subx.html#L24'>check-ints-equal</a>/disp32 +<span id="L83" class="LineNr"> 83 </span> e8/call <a href='051test.subx.html#L23'>check-ints-equal</a>/disp32 <span id="L84" class="LineNr"> 84 </span> <span class="subxS2Comment"># . . discard args</span> <span id="L85" class="LineNr"> 85 </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="L86" class="LineNr"> 86 </span> <span class="subxComment"># first word is 0</span> @@ -151,7 +151,7 @@ if ('onhashchange' in window) { <span id="L91" class="LineNr"> 91 </span> 68/push 0/imm32 <span id="L92" class="LineNr"> 92 </span> 50/push-eax <span id="L93" class="LineNr"> 93 </span> <span class="subxS2Comment"># . . call</span> -<span id="L94" class="LineNr"> 94 </span> e8/call <a href='051test.subx.html#L24'>check-ints-equal</a>/disp32 +<span id="L94" class="LineNr"> 94 </span> e8/call <a href='051test.subx.html#L23'>check-ints-equal</a>/disp32 <span id="L95" class="LineNr"> 95 </span> <span class="subxS2Comment"># . . discard args</span> <span id="L96" class="LineNr"> 96 </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="L97" class="LineNr"> 97 </span> <span class="subxComment"># second word is 0</span> @@ -162,7 +162,7 @@ if ('onhashchange' in window) { <span id="L102" class="LineNr">102 </span> 68/push 0/imm32 <span id="L103" class="LineNr">103 </span> 50/push-eax <span id="L104" class="LineNr">104 </span> <span class="subxS2Comment"># . . call</span> -<span id="L105" class="LineNr">105 </span> e8/call <a href='051test.subx.html#L24'>check-ints-equal</a>/disp32 +<span id="L105" class="LineNr">105 </span> e8/call <a href='051test.subx.html#L23'>check-ints-equal</a>/disp32 <span id="L106" class="LineNr">106 </span> <span class="subxS2Comment"># . . discard args</span> <span id="L107" class="LineNr">107 </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="L108" class="LineNr">108 </span> <span class="subxS1Comment"># . epilogue</span> @@ -220,263 +220,260 @@ if ('onhashchange' in window) { <span id="L160" class="LineNr">160 </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="L161" class="LineNr">161 </span> <span class="subxS1Comment"># . syscall(exit, 1)</span> <span id="L162" class="LineNr">162 </span> bb/copy-to-ebx 1/imm32 -<span id="L163" class="LineNr">163 </span> b8/copy-to-eax 1/imm32/exit -<span id="L164" class="LineNr">164 </span> cd/syscall 0x80/imm8 -<span id="L165" class="LineNr">165 </span> <span class="subxComment"># never gets here</span> -<span id="L166" class="LineNr">166 </span> -<span id="L167" class="LineNr">167 </span><span class="subxTest">test-push</span>: -<span id="L168" class="LineNr">168 </span> <span class="subxS1Comment"># . prologue</span> -<span id="L169" class="LineNr">169 </span> 55/push-ebp -<span id="L170" class="LineNr">170 </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="L171" class="LineNr">171 </span> <span class="subxComment"># var stack/ecx = empty stack of size 8</span> +<span id="L163" class="LineNr">163 </span> e8/call syscall_exit/disp32 +<span id="L164" class="LineNr">164 </span> <span class="subxComment"># never gets here</span> +<span id="L165" class="LineNr">165 </span> +<span id="L166" class="LineNr">166 </span><span class="subxTest">test-push</span>: +<span id="L167" class="LineNr">167 </span> <span class="subxS1Comment"># . prologue</span> +<span id="L168" class="LineNr">168 </span> 55/push-ebp +<span id="L169" class="LineNr">169 </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="L170" class="LineNr">170 </span> <span class="subxComment"># var stack/ecx = empty stack of size 8</span> +<span id="L171" class="LineNr">171 </span> 68/push 0/imm32 <span id="L172" class="LineNr">172 </span> 68/push 0/imm32 -<span id="L173" class="LineNr">173 </span> 68/push 0/imm32 -<span id="L174" class="LineNr">174 </span> 68/push 8/imm32/size -<span id="L175" class="LineNr">175 </span> 68/push 0/imm32/top -<span id="L176" class="LineNr">176 </span> 89/copy 3/mod/direct 1/rm32/ecx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 4/r32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy esp to ecx</span> -<span id="L177" class="LineNr">177 </span> <span class="subxComment"># push(stack, 0x42)</span> -<span id="L178" class="LineNr">178 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L179" class="LineNr">179 </span> 68/push 0x42/imm32 -<span id="L180" class="LineNr">180 </span> 51/push-ecx -<span id="L181" class="LineNr">181 </span> <span class="subxS2Comment"># . . call</span> -<span id="L182" class="LineNr">182 </span> e8/call <a href='092stack.subx.html#L114'>push</a>/disp32 -<span id="L183" class="LineNr">183 </span> <span class="subxS2Comment"># . . discard args</span> -<span id="L184" class="LineNr">184 </span> 81 0/subop/add 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 8/imm32 <span class="subxComment"># add to esp</span> -<span id="L185" class="LineNr">185 </span> <span class="subxComment"># check top</span> -<span id="L186" class="LineNr">186 </span> 58/pop-to-eax -<span id="L187" class="LineNr">187 </span> <span class="subxS1Comment"># . check-ints-equal(eax, 4, msg)</span> -<span id="L188" class="LineNr">188 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L189" class="LineNr">189 </span> 68/push <span class="Constant">"F - <a href='092stack.subx.html#L167'>test-push</a>: top"</span>/imm32 -<span id="L190" class="LineNr">190 </span> 68/push 4/imm32 -<span id="L191" class="LineNr">191 </span> 50/push-eax -<span id="L192" class="LineNr">192 </span> <span class="subxS2Comment"># . . call</span> -<span id="L193" class="LineNr">193 </span> e8/call <a href='051test.subx.html#L24'>check-ints-equal</a>/disp32 -<span id="L194" class="LineNr">194 </span> <span class="subxS2Comment"># . . discard args</span> -<span id="L195" class="LineNr">195 </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="L196" class="LineNr">196 </span> <span class="subxComment"># check size</span> -<span id="L197" class="LineNr">197 </span> 58/pop-to-eax -<span id="L198" class="LineNr">198 </span> <span class="subxS1Comment"># . check-ints-equal(eax, 8, msg)</span> -<span id="L199" class="LineNr">199 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L200" class="LineNr">200 </span> 68/push <span class="Constant">"F - <a href='092stack.subx.html#L167'>test-push</a>: size"</span>/imm32 -<span id="L201" class="LineNr">201 </span> 68/push 8/imm32 -<span id="L202" class="LineNr">202 </span> 50/push-eax -<span id="L203" class="LineNr">203 </span> <span class="subxS2Comment"># . . call</span> -<span id="L204" class="LineNr">204 </span> e8/call <a href='051test.subx.html#L24'>check-ints-equal</a>/disp32 -<span id="L205" class="LineNr">205 </span> <span class="subxS2Comment"># . . discard args</span> -<span id="L206" class="LineNr">206 </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="L207" class="LineNr">207 </span> <span class="subxComment"># first word is 0x42</span> -<span id="L208" class="LineNr">208 </span> 58/pop-to-eax -<span id="L209" class="LineNr">209 </span> <span class="subxS1Comment"># . check-ints-equal(eax, 0x42, msg)</span> -<span id="L210" class="LineNr">210 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L211" class="LineNr">211 </span> 68/push <span class="Constant">"F - <a href='092stack.subx.html#L167'>test-push</a>: data[0..3]"</span>/imm32 -<span id="L212" class="LineNr">212 </span> 68/push 0x42/imm32 -<span id="L213" class="LineNr">213 </span> 50/push-eax -<span id="L214" class="LineNr">214 </span> <span class="subxS2Comment"># . . call</span> -<span id="L215" class="LineNr">215 </span> e8/call <a href='051test.subx.html#L24'>check-ints-equal</a>/disp32 -<span id="L216" class="LineNr">216 </span> <span class="subxS2Comment"># . . discard args</span> -<span id="L217" class="LineNr">217 </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="L218" class="LineNr">218 </span> <span class="subxComment"># second word is 0</span> -<span id="L219" class="LineNr">219 </span> 58/pop-to-eax -<span id="L220" class="LineNr">220 </span> <span class="subxS1Comment"># . check-ints-equal(eax, 0, msg)</span> -<span id="L221" class="LineNr">221 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L222" class="LineNr">222 </span> 68/push <span class="Constant">"F - <a href='092stack.subx.html#L167'>test-push</a>: data[4..7]"</span>/imm32 -<span id="L223" class="LineNr">223 </span> 68/push 0/imm32 -<span id="L224" class="LineNr">224 </span> 50/push-eax -<span id="L225" class="LineNr">225 </span> <span class="subxS2Comment"># . . call</span> -<span id="L226" class="LineNr">226 </span> e8/call <a href='051test.subx.html#L24'>check-ints-equal</a>/disp32 -<span id="L227" class="LineNr">227 </span> <span class="subxS2Comment"># . . discard args</span> -<span id="L228" class="LineNr">228 </span> 81 0/subop/add 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0xc/imm32 <span class="subxComment"># add to esp</span> -<span id="L229" class="LineNr">229 </span> <span class="subxS1Comment"># . epilogue</span> -<span id="L230" class="LineNr">230 </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="L231" class="LineNr">231 </span> 5d/pop-to-ebp -<span id="L232" class="LineNr">232 </span> c3/return -<span id="L233" class="LineNr">233 </span> -<span id="L234" class="LineNr">234 </span><span class="subxComment"># TODO: make this generic</span> -<span id="L235" class="LineNr">235 </span><span class="subxFunction">pop</span>: <span class="subxComment"># s: (addr stack) -> n/eax: int</span> -<span id="L236" class="LineNr">236 </span> <span class="subxS1Comment"># . prologue</span> -<span id="L237" class="LineNr">237 </span> 55/push-ebp -<span id="L238" class="LineNr">238 </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="L239" class="LineNr">239 </span> <span class="subxS1Comment"># . save registers</span> -<span id="L240" class="LineNr">240 </span> 51/push-ecx -<span id="L241" class="LineNr">241 </span> 56/push-esi -<span id="L242" class="LineNr">242 </span> <span class="subxComment"># esi = s</span> -<span id="L243" class="LineNr">243 </span> 8b/copy 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 6/r32/esi 8/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy *(ebp+8) to esi</span> -<span id="L244" class="LineNr">244 </span> <span class="subxComment"># if (s->top <= 0) abort</span> -<span id="L245" class="LineNr">245 </span> 81 7/subop/compare 0/mod/indirect 6/rm32/esi <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0/imm32 <span class="subxComment"># compare *esi</span> -<span id="L246" class="LineNr">246 </span> 7e/jump-if-<= $pop:abort/disp8 -<span id="L247" class="LineNr">247 </span> <span class="subxComment"># s->top -= 4</span> -<span id="L248" class="LineNr">248 </span> 81 5/subop/subtract 0/mod/direct 6/rm32/esi <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 4/imm32 <span class="subxComment"># subtract from *esi</span> -<span id="L249" class="LineNr">249 </span> <span class="subxComment"># eax = s->data[s->top]</span> -<span id="L250" class="LineNr">250 </span> 8b/copy 0/mod/indirect 6/rm32/esi <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 1/r32/ecx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy *esi to ecx</span> -<span id="L251" class="LineNr">251 </span> 8b/copy 1/mod/*+disp8 4/rm32/sib 6/base/esi 1/index/ecx <span class="Normal"> . </span> 0/r32/eax 8/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy *(esi+ecx+8) to eax</span> -<span id="L252" class="LineNr">252 </span> <span class="subxComment"># s->data[s->top] = 0</span> -<span id="L253" class="LineNr">253 </span> c7 0/subop/copy 1/mod/*+disp8 4/rm32/sib 6/base/esi 1/index/ecx <span class="Normal"> . </span> 0/r32/eax 8/disp8 0/imm32 <span class="subxComment"># copy to *(esi+ecx+8)</span> -<span id="L254" class="LineNr">254 </span><span class="Constant">$pop:end</span>: -<span id="L255" class="LineNr">255 </span> <span class="subxS1Comment"># . restore registers</span> -<span id="L256" class="LineNr">256 </span> 5e/pop-to-esi -<span id="L257" class="LineNr">257 </span> 59/pop-to-ecx -<span id="L258" class="LineNr">258 </span> <span class="subxS1Comment"># . epilogue</span> -<span id="L259" class="LineNr">259 </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="L260" class="LineNr">260 </span> 5d/pop-to-ebp -<span id="L261" class="LineNr">261 </span> c3/return -<span id="L262" class="LineNr">262 </span> -<span id="L263" class="LineNr">263 </span><span class="Constant">$pop:abort</span>: -<span id="L264" class="LineNr">264 </span> <span class="subxComment"># print(stderr, "error: pop: nothing left in stack")</span> -<span id="L265" class="LineNr">265 </span> <span class="subxS1Comment"># . write-buffered(Stderr, "error: pop: nothing left in stack")</span> -<span id="L266" class="LineNr">266 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L267" class="LineNr">267 </span> 68/push <span class="Constant">"error: <a href='092stack.subx.html#L235'>pop</a>: nothing left in stack"</span>/imm32 -<span id="L268" class="LineNr">268 </span> 68/push <span class="SpecialChar"><a href='065write-buffered.subx.html#L209'>Stderr</a></span>/imm32 -<span id="L269" class="LineNr">269 </span> <span class="subxS2Comment"># . . call</span> -<span id="L270" class="LineNr">270 </span> e8/call <a href='065write-buffered.subx.html#L8'>write-buffered</a>/disp32 -<span id="L271" class="LineNr">271 </span> <span class="subxS2Comment"># . . discard args</span> -<span id="L272" class="LineNr">272 </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="L273" class="LineNr">273 </span> <span class="subxS1Comment"># . flush(Stderr)</span> -<span id="L274" class="LineNr">274 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L275" class="LineNr">275 </span> 68/push <span class="SpecialChar"><a href='065write-buffered.subx.html#L209'>Stderr</a></span>/imm32 -<span id="L276" class="LineNr">276 </span> <span class="subxS2Comment"># . . call</span> -<span id="L277" class="LineNr">277 </span> e8/call <a href='064write-byte.subx.html#L81'>flush</a>/disp32 -<span id="L278" class="LineNr">278 </span> <span class="subxS2Comment"># . . discard args</span> -<span id="L279" class="LineNr">279 </span> 81 0/subop/add 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 4/imm32 <span class="subxComment"># add to esp</span> -<span id="L280" class="LineNr">280 </span> <span class="subxS1Comment"># . syscall(exit, 1)</span> -<span id="L281" class="LineNr">281 </span> bb/copy-to-ebx 1/imm32 -<span id="L282" class="LineNr">282 </span> b8/copy-to-eax 1/imm32/exit -<span id="L283" class="LineNr">283 </span> cd/syscall 0x80/imm8 -<span id="L284" class="LineNr">284 </span> <span class="subxComment"># never gets here</span> -<span id="L285" class="LineNr">285 </span> -<span id="L286" class="LineNr">286 </span><span class="subxTest">test-pop</span>: -<span id="L287" class="LineNr">287 </span> <span class="subxS1Comment"># . prologue</span> -<span id="L288" class="LineNr">288 </span> 55/push-ebp -<span id="L289" class="LineNr">289 </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="L290" class="LineNr">290 </span> <span class="subxComment"># var stack/ecx = stack of size 8 containing just 0x42</span> -<span id="L291" class="LineNr">291 </span> 68/push 0/imm32 -<span id="L292" class="LineNr">292 </span> 68/push 0x42/imm32 -<span id="L293" class="LineNr">293 </span> 68/push 8/imm32/size -<span id="L294" class="LineNr">294 </span> 68/push 4/imm32/top -<span id="L295" class="LineNr">295 </span> 89/copy 3/mod/direct 1/rm32/ecx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 4/r32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy esp to ecx</span> -<span id="L296" class="LineNr">296 </span> <span class="subxComment"># eax = pop(stack)</span> -<span id="L297" class="LineNr">297 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L298" class="LineNr">298 </span> 51/push-ecx -<span id="L299" class="LineNr">299 </span> <span class="subxS2Comment"># . . call</span> -<span id="L300" class="LineNr">300 </span> e8/call <a href='092stack.subx.html#L235'>pop</a>/disp32 -<span id="L301" class="LineNr">301 </span> <span class="subxS2Comment"># . . discard args</span> -<span id="L302" class="LineNr">302 </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="L303" class="LineNr">303 </span> <span class="subxComment"># check-ints-equal(eax, 0x42, msg)</span> -<span id="L304" class="LineNr">304 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L305" class="LineNr">305 </span> 68/push <span class="Constant">"F - <a href='092stack.subx.html#L286'>test-pop</a>: result"</span>/imm32 -<span id="L306" class="LineNr">306 </span> 68/push 0x42/imm32 -<span id="L307" class="LineNr">307 </span> 50/push-eax -<span id="L308" class="LineNr">308 </span> <span class="subxS2Comment"># . . call</span> -<span id="L309" class="LineNr">309 </span> e8/call <a href='051test.subx.html#L24'>check-ints-equal</a>/disp32 -<span id="L310" class="LineNr">310 </span> <span class="subxS2Comment"># . . discard args</span> -<span id="L311" class="LineNr">311 </span> 81 0/subop/add 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0xc/imm32 <span class="subxComment"># add to esp</span> -<span id="L312" class="LineNr">312 </span> <span class="subxComment"># check top</span> -<span id="L313" class="LineNr">313 </span> 58/pop-to-eax -<span id="L314" class="LineNr">314 </span> <span class="subxS1Comment"># . check-ints-equal(eax, 0, msg)</span> -<span id="L315" class="LineNr">315 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L316" class="LineNr">316 </span> 68/push <span class="Constant">"F - <a href='092stack.subx.html#L286'>test-pop</a>: top"</span>/imm32 -<span id="L317" class="LineNr">317 </span> 68/push 0/imm32 -<span id="L318" class="LineNr">318 </span> 50/push-eax -<span id="L319" class="LineNr">319 </span> <span class="subxS2Comment"># . . call</span> -<span id="L320" class="LineNr">320 </span> e8/call <a href='051test.subx.html#L24'>check-ints-equal</a>/disp32 -<span id="L321" class="LineNr">321 </span> <span class="subxS2Comment"># . . discard args</span> -<span id="L322" class="LineNr">322 </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="L323" class="LineNr">323 </span> <span class="subxComment"># check size</span> -<span id="L324" class="LineNr">324 </span> 58/pop-to-eax -<span id="L325" class="LineNr">325 </span> <span class="subxS1Comment"># . check-ints-equal(eax, 8, msg)</span> -<span id="L326" class="LineNr">326 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L327" class="LineNr">327 </span> 68/push <span class="Constant">"F - <a href='092stack.subx.html#L286'>test-pop</a>: size"</span>/imm32 -<span id="L328" class="LineNr">328 </span> 68/push 8/imm32 -<span id="L329" class="LineNr">329 </span> 50/push-eax -<span id="L330" class="LineNr">330 </span> <span class="subxS2Comment"># . . call</span> -<span id="L331" class="LineNr">331 </span> e8/call <a href='051test.subx.html#L24'>check-ints-equal</a>/disp32 -<span id="L332" class="LineNr">332 </span> <span class="subxS2Comment"># . . discard args</span> -<span id="L333" class="LineNr">333 </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="L334" class="LineNr">334 </span> <span class="subxS1Comment"># . epilogue</span> -<span id="L335" class="LineNr">335 </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="L336" class="LineNr">336 </span> 5d/pop-to-ebp -<span id="L337" class="LineNr">337 </span> c3/return -<span id="L338" class="LineNr">338 </span> -<span id="L339" class="LineNr">339 </span><span class="subxComment"># TODO: make this generic</span> -<span id="L340" class="LineNr">340 </span><span class="subxFunction">top</span>: <span class="subxComment"># s: (addr stack) -> n/eax: int</span> -<span id="L341" class="LineNr">341 </span> <span class="subxS1Comment"># . prologue</span> -<span id="L342" class="LineNr">342 </span> 55/push-ebp -<span id="L343" class="LineNr">343 </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="L344" class="LineNr">344 </span> <span class="subxS1Comment"># . save registers</span> -<span id="L345" class="LineNr">345 </span> 51/push-ecx -<span id="L346" class="LineNr">346 </span> 56/push-esi -<span id="L347" class="LineNr">347 </span> <span class="subxComment"># esi = s</span> -<span id="L348" class="LineNr">348 </span> 8b/copy 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 6/r32/esi 8/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy *(ebp+8) to esi</span> -<span id="L349" class="LineNr">349 </span> <span class="subxComment"># if (s->top <= 0) abort</span> -<span id="L350" class="LineNr">350 </span> 81 7/subop/compare 0/mod/indirect 6/rm32/esi <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0/imm32 <span class="subxComment"># compare *esi</span> -<span id="L351" class="LineNr">351 </span> 7e/jump-if-<= $top:abort/disp8 -<span id="L352" class="LineNr">352 </span> <span class="subxComment"># n = s->data[s->top - 4]</span> -<span id="L353" class="LineNr">353 </span> 8b/copy 0/mod/indirect 6/rm32/esi <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 1/r32/ecx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy *esi to ecx</span> -<span id="L354" class="LineNr">354 </span> 81 5/subop/subtract 3/mod/direct 1/rm32/ecx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 4/imm32 <span class="subxComment"># subtract from ecx</span> -<span id="L355" class="LineNr">355 </span> 8b/copy 1/mod/*+disp8 4/rm32/sib 6/base/esi 1/index/ecx <span class="Normal"> . </span> 0/r32/eax 8/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy *(esi+ecx+8) to eax</span> -<span id="L356" class="LineNr">356 </span><span class="Constant">$top:end</span>: -<span id="L357" class="LineNr">357 </span> <span class="subxS1Comment"># . restore registers</span> -<span id="L358" class="LineNr">358 </span> 5e/pop-to-esi -<span id="L359" class="LineNr">359 </span> 59/pop-to-ecx -<span id="L360" class="LineNr">360 </span> <span class="subxS1Comment"># . epilogue</span> -<span id="L361" class="LineNr">361 </span> 89/copy 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 5/r32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy ebp to esp</span> -<span id="L362" class="LineNr">362 </span> 5d/pop-to-ebp -<span id="L363" class="LineNr">363 </span> c3/return -<span id="L364" class="LineNr">364 </span> -<span id="L365" class="LineNr">365 </span><span class="Constant">$top:abort</span>: -<span id="L366" class="LineNr">366 </span> <span class="subxComment"># print(stderr, "error: top: nothing left in stack")</span> -<span id="L367" class="LineNr">367 </span> <span class="subxS1Comment"># . write-buffered(Stderr, "error: top: nothing left in stack")</span> -<span id="L368" class="LineNr">368 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L369" class="LineNr">369 </span> 68/push <span class="Constant">"error: <a href='092stack.subx.html#L340'>top</a>: nothing left in stack"</span>/imm32 -<span id="L370" class="LineNr">370 </span> 68/push <span class="SpecialChar"><a href='065write-buffered.subx.html#L209'>Stderr</a></span>/imm32 -<span id="L371" class="LineNr">371 </span> <span class="subxS2Comment"># . . call</span> -<span id="L372" class="LineNr">372 </span> e8/call <a href='065write-buffered.subx.html#L8'>write-buffered</a>/disp32 -<span id="L373" class="LineNr">373 </span> <span class="subxS2Comment"># . . discard args</span> -<span id="L374" class="LineNr">374 </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="L375" class="LineNr">375 </span> <span class="subxS1Comment"># . flush(Stderr)</span> -<span id="L376" class="LineNr">376 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L377" class="LineNr">377 </span> 68/push <span class="SpecialChar"><a href='065write-buffered.subx.html#L209'>Stderr</a></span>/imm32 -<span id="L378" class="LineNr">378 </span> <span class="subxS2Comment"># . . call</span> -<span id="L379" class="LineNr">379 </span> e8/call <a href='064write-byte.subx.html#L81'>flush</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"># . syscall(exit, 1)</span> -<span id="L383" class="LineNr">383 </span> bb/copy-to-ebx 1/imm32 -<span id="L384" class="LineNr">384 </span> b8/copy-to-eax 1/imm32/exit -<span id="L385" class="LineNr">385 </span> cd/syscall 0x80/imm8 -<span id="L386" class="LineNr">386 </span> <span class="subxComment"># never gets here</span> -<span id="L387" class="LineNr">387 </span> -<span id="L388" class="LineNr">388 </span><span class="subxTest">test-top</span>: -<span id="L389" class="LineNr">389 </span> <span class="subxS1Comment"># . prologue</span> -<span id="L390" class="LineNr">390 </span> 55/push-ebp -<span id="L391" class="LineNr">391 </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="L392" class="LineNr">392 </span> <span class="subxComment"># var stack/ecx = stack of size 8 containing just 0x42</span> -<span id="L393" class="LineNr">393 </span> 68/push 0/imm32 -<span id="L394" class="LineNr">394 </span> 68/push 0x42/imm32 -<span id="L395" class="LineNr">395 </span> 68/push 8/imm32/size -<span id="L396" class="LineNr">396 </span> 68/push 4/imm32/top -<span id="L397" class="LineNr">397 </span> 89/copy 3/mod/direct 1/rm32/ecx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 4/r32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy esp to ecx</span> -<span id="L398" class="LineNr">398 </span> <span class="subxComment"># eax = top(stack)</span> -<span id="L399" class="LineNr">399 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L400" class="LineNr">400 </span> 51/push-ecx -<span id="L401" class="LineNr">401 </span> <span class="subxS2Comment"># . . call</span> -<span id="L402" class="LineNr">402 </span> e8/call <a href='092stack.subx.html#L340'>top</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> 4/imm32 <span class="subxComment"># add to esp</span> -<span id="L405" class="LineNr">405 </span> <span class="subxComment"># check-ints-equal(eax, 42, msg")</span> -<span id="L406" class="LineNr">406 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L407" class="LineNr">407 </span> 68/push <span class="Constant">"F - <a href='092stack.subx.html#L388'>test-top</a>: result"</span>/imm32 -<span id="L408" class="LineNr">408 </span> 68/push 0x42/imm32 -<span id="L409" class="LineNr">409 </span> 50/push-eax -<span id="L410" class="LineNr">410 </span> <span class="subxS2Comment"># . . call</span> -<span id="L411" class="LineNr">411 </span> e8/call <a href='051test.subx.html#L24'>check-ints-equal</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> 0xc/imm32 <span class="subxComment"># add to esp</span> -<span id="L414" class="LineNr">414 </span> <span class="subxS1Comment"># . epilogue</span> -<span id="L415" class="LineNr">415 </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="L416" class="LineNr">416 </span> 5d/pop-to-ebp -<span id="L417" class="LineNr">417 </span> c3/return -<span id="L418" class="LineNr">418 </span> -<span id="L419" class="LineNr">419 </span><span class="subxS2Comment"># . . vim:nowrap:textwidth=0</span> +<span id="L173" class="LineNr">173 </span> 68/push 8/imm32/size +<span id="L174" class="LineNr">174 </span> 68/push 0/imm32/top +<span id="L175" class="LineNr">175 </span> 89/copy 3/mod/direct 1/rm32/ecx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 4/r32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy esp to ecx</span> +<span id="L176" class="LineNr">176 </span> <span class="subxComment"># push(stack, 0x42)</span> +<span id="L177" class="LineNr">177 </span> <span class="subxS2Comment"># . . push args</span> +<span id="L178" class="LineNr">178 </span> 68/push 0x42/imm32 +<span id="L179" class="LineNr">179 </span> 51/push-ecx +<span id="L180" class="LineNr">180 </span> <span class="subxS2Comment"># . . call</span> +<span id="L181" class="LineNr">181 </span> e8/call <a href='092stack.subx.html#L114'>push</a>/disp32 +<span id="L182" class="LineNr">182 </span> <span class="subxS2Comment"># . . discard args</span> +<span id="L183" class="LineNr">183 </span> 81 0/subop/add 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 8/imm32 <span class="subxComment"># add to esp</span> +<span id="L184" class="LineNr">184 </span> <span class="subxComment"># check top</span> +<span id="L185" class="LineNr">185 </span> 58/pop-to-eax +<span id="L186" class="LineNr">186 </span> <span class="subxS1Comment"># . check-ints-equal(eax, 4, msg)</span> +<span id="L187" class="LineNr">187 </span> <span class="subxS2Comment"># . . push args</span> +<span id="L188" class="LineNr">188 </span> 68/push <span class="Constant">"F - <a href='092stack.subx.html#L166'>test-push</a>: top"</span>/imm32 +<span id="L189" class="LineNr">189 </span> 68/push 4/imm32 +<span id="L190" class="LineNr">190 </span> 50/push-eax +<span id="L191" class="LineNr">191 </span> <span class="subxS2Comment"># . . call</span> +<span id="L192" class="LineNr">192 </span> e8/call <a href='051test.subx.html#L23'>check-ints-equal</a>/disp32 +<span id="L193" class="LineNr">193 </span> <span class="subxS2Comment"># . . discard args</span> +<span id="L194" class="LineNr">194 </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="L195" class="LineNr">195 </span> <span class="subxComment"># check size</span> +<span id="L196" class="LineNr">196 </span> 58/pop-to-eax +<span id="L197" class="LineNr">197 </span> <span class="subxS1Comment"># . check-ints-equal(eax, 8, msg)</span> +<span id="L198" class="LineNr">198 </span> <span class="subxS2Comment"># . . push args</span> +<span id="L199" class="LineNr">199 </span> 68/push <span class="Constant">"F - <a href='092stack.subx.html#L166'>test-push</a>: size"</span>/imm32 +<span id="L200" class="LineNr">200 </span> 68/push 8/imm32 +<span id="L201" class="LineNr">201 </span> 50/push-eax +<span id="L202" class="LineNr">202 </span> <span class="subxS2Comment"># . . call</span> +<span id="L203" class="LineNr">203 </span> e8/call <a href='051test.subx.html#L23'>check-ints-equal</a>/disp32 +<span id="L204" class="LineNr">204 </span> <span class="subxS2Comment"># . . discard args</span> +<span id="L205" class="LineNr">205 </span> 81 0/subop/add 3/mod/direct 4/rm32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0xc/imm32 <span class="subxComment"># add to esp</span> +<span id="L206" class="LineNr">206 </span> <span class="subxComment"># first word is 0x42</span> +<span id="L207" class="LineNr">207 </span> 58/pop-to-eax +<span id="L208" class="LineNr">208 </span> <span class="subxS1Comment"># . check-ints-equal(eax, 0x42, msg)</span> +<span id="L209" class="LineNr">209 </span> <span class="subxS2Comment"># . . push args</span> +<span id="L210" class="LineNr">210 </span> 68/push <span class="Constant">"F - <a href='092stack.subx.html#L166'>test-push</a>: data[0..3]"</span>/imm32 +<span id="L211" class="LineNr">211 </span> 68/push 0x42/imm32 +<span id="L212" class="LineNr">212 </span> 50/push-eax +<span id="L213" class="LineNr">213 </span> <span class="subxS2Comment"># . . call</span> +<span id="L214" class="LineNr">214 </span> e8/call <a href='051test.subx.html#L23'>check-ints-equal</a>/disp32 +<span id="L215" class="LineNr">215 </span> <span class="subxS2Comment"># . . discard args</span> +<span id="L216" class="LineNr">216 </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="L217" class="LineNr">217 </span> <span class="subxComment"># second word is 0</span> +<span id="L218" class="LineNr">218 </span> 58/pop-to-eax +<span id="L219" class="LineNr">219 </span> <span class="subxS1Comment"># . check-ints-equal(eax, 0, msg)</span> +<span id="L220" class="LineNr">220 </span> <span class="subxS2Comment"># . . push args</span> +<span id="L221" class="LineNr">221 </span> 68/push <span class="Constant">"F - <a href='092stack.subx.html#L166'>test-push</a>: data[4..7]"</span>/imm32 +<span id="L222" class="LineNr">222 </span> 68/push 0/imm32 +<span id="L223" class="LineNr">223 </span> 50/push-eax +<span id="L224" class="LineNr">224 </span> <span class="subxS2Comment"># . . call</span> +<span id="L225" class="LineNr">225 </span> e8/call <a href='051test.subx.html#L23'>check-ints-equal</a>/disp32 +<span id="L226" class="LineNr">226 </span> <span class="subxS2Comment"># . . discard args</span> +<span id="L227" class="LineNr">227 </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="L228" class="LineNr">228 </span> <span class="subxS1Comment"># . epilogue</span> +<span id="L229" class="LineNr">229 </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="L230" class="LineNr">230 </span> 5d/pop-to-ebp +<span id="L231" class="LineNr">231 </span> c3/return +<span id="L232" class="LineNr">232 </span> +<span id="L233" class="LineNr">233 </span><span class="subxComment"># TODO: make this generic</span> +<span id="L234" class="LineNr">234 </span><span class="subxFunction">pop</span>: <span class="subxComment"># s: (addr stack) -> n/eax: int</span> +<span id="L235" class="LineNr">235 </span> <span class="subxS1Comment"># . prologue</span> +<span id="L236" class="LineNr">236 </span> 55/push-ebp +<span id="L237" class="LineNr">237 </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="L238" class="LineNr">238 </span> <span class="subxS1Comment"># . save registers</span> +<span id="L239" class="LineNr">239 </span> 51/push-ecx +<span id="L240" class="LineNr">240 </span> 56/push-esi +<span id="L241" class="LineNr">241 </span> <span class="subxComment"># esi = s</span> +<span id="L242" class="LineNr">242 </span> 8b/copy 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 6/r32/esi 8/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy *(ebp+8) to esi</span> +<span id="L243" class="LineNr">243 </span> <span class="subxComment"># if (s->top <= 0) abort</span> +<span id="L244" class="LineNr">244 </span> 81 7/subop/compare 0/mod/indirect 6/rm32/esi <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0/imm32 <span class="subxComment"># compare *esi</span> +<span id="L245" class="LineNr">245 </span> 7e/jump-if-<= $pop:abort/disp8 +<span id="L246" class="LineNr">246 </span> <span class="subxComment"># s->top -= 4</span> +<span id="L247" class="LineNr">247 </span> 81 5/subop/subtract 0/mod/direct 6/rm32/esi <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 4/imm32 <span class="subxComment"># subtract from *esi</span> +<span id="L248" class="LineNr">248 </span> <span class="subxComment"># eax = s->data[s->top]</span> +<span id="L249" class="LineNr">249 </span> 8b/copy 0/mod/indirect 6/rm32/esi <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 1/r32/ecx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy *esi to ecx</span> +<span id="L250" class="LineNr">250 </span> 8b/copy 1/mod/*+disp8 4/rm32/sib 6/base/esi 1/index/ecx <span class="Normal"> . </span> 0/r32/eax 8/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy *(esi+ecx+8) to eax</span> +<span id="L251" class="LineNr">251 </span> <span class="subxComment"># s->data[s->top] = 0</span> +<span id="L252" class="LineNr">252 </span> c7 0/subop/copy 1/mod/*+disp8 4/rm32/sib 6/base/esi 1/index/ecx <span class="Normal"> . </span> 0/r32/eax 8/disp8 0/imm32 <span class="subxComment"># copy to *(esi+ecx+8)</span> +<span id="L253" class="LineNr">253 </span><span class="Constant">$pop:end</span>: +<span id="L254" class="LineNr">254 </span> <span class="subxS1Comment"># . restore registers</span> +<span id="L255" class="LineNr">255 </span> 5e/pop-to-esi +<span id="L256" class="LineNr">256 </span> 59/pop-to-ecx +<span id="L257" class="LineNr">257 </span> <span class="subxS1Comment"># . epilogue</span> +<span id="L258" class="LineNr">258 </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="L259" class="LineNr">259 </span> 5d/pop-to-ebp +<span id="L260" class="LineNr">260 </span> c3/return +<span id="L261" class="LineNr">261 </span> +<span id="L262" class="LineNr">262 </span><span class="Constant">$pop:abort</span>: +<span id="L263" class="LineNr">263 </span> <span class="subxComment"># print(stderr, "error: pop: nothing left in stack")</span> +<span id="L264" class="LineNr">264 </span> <span class="subxS1Comment"># . write-buffered(Stderr, "error: pop: nothing left in stack")</span> +<span id="L265" class="LineNr">265 </span> <span class="subxS2Comment"># . . push args</span> +<span id="L266" class="LineNr">266 </span> 68/push <span class="Constant">"error: <a href='092stack.subx.html#L234'>pop</a>: nothing left in stack"</span>/imm32 +<span id="L267" class="LineNr">267 </span> 68/push <span class="SpecialChar"><a href='065write-buffered.subx.html#L209'>Stderr</a></span>/imm32 +<span id="L268" class="LineNr">268 </span> <span class="subxS2Comment"># . . call</span> +<span id="L269" class="LineNr">269 </span> e8/call <a href='065write-buffered.subx.html#L8'>write-buffered</a>/disp32 +<span id="L270" class="LineNr">270 </span> <span class="subxS2Comment"># . . discard args</span> +<span id="L271" class="LineNr">271 </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="L272" class="LineNr">272 </span> <span class="subxS1Comment"># . flush(Stderr)</span> +<span id="L273" class="LineNr">273 </span> <span class="subxS2Comment"># . . push args</span> +<span id="L274" class="LineNr">274 </span> 68/push <span class="SpecialChar"><a href='065write-buffered.subx.html#L209'>Stderr</a></span>/imm32 +<span id="L275" class="LineNr">275 </span> <span class="subxS2Comment"># . . call</span> +<span id="L276" class="LineNr">276 </span> e8/call <a href='064write-byte.subx.html#L81'>flush</a>/disp32 +<span id="L277" class="LineNr">277 </span> <span class="subxS2Comment"># . . discard args</span> +<span id="L278" class="LineNr">278 </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="L279" class="LineNr">279 </span> <span class="subxS1Comment"># . syscall(exit, 1)</span> +<span id="L280" class="LineNr">280 </span> bb/copy-to-ebx 1/imm32 +<span id="L281" class="LineNr">281 </span> e8/call syscall_exit/disp32 +<span id="L282" class="LineNr">282 </span> <span class="subxComment"># never gets here</span> +<span id="L283" class="LineNr">283 </span> +<span id="L284" class="LineNr">284 </span><span class="subxTest">test-pop</span>: +<span id="L285" class="LineNr">285 </span> <span class="subxS1Comment"># . prologue</span> +<span id="L286" class="LineNr">286 </span> 55/push-ebp +<span id="L287" class="LineNr">287 </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="L288" class="LineNr">288 </span> <span class="subxComment"># var stack/ecx = stack of size 8 containing just 0x42</span> +<span id="L289" class="LineNr">289 </span> 68/push 0/imm32 +<span id="L290" class="LineNr">290 </span> 68/push 0x42/imm32 +<span id="L291" class="LineNr">291 </span> 68/push 8/imm32/size +<span id="L292" class="LineNr">292 </span> 68/push 4/imm32/top +<span id="L293" class="LineNr">293 </span> 89/copy 3/mod/direct 1/rm32/ecx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 4/r32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy esp to ecx</span> +<span id="L294" class="LineNr">294 </span> <span class="subxComment"># eax = pop(stack)</span> +<span id="L295" class="LineNr">295 </span> <span class="subxS2Comment"># . . push args</span> +<span id="L296" class="LineNr">296 </span> 51/push-ecx +<span id="L297" class="LineNr">297 </span> <span class="subxS2Comment"># . . call</span> +<span id="L298" class="LineNr">298 </span> e8/call <a href='092stack.subx.html#L234'>pop</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> 4/imm32 <span class="subxComment"># add to esp</span> +<span id="L301" class="LineNr">301 </span> <span class="subxComment"># check-ints-equal(eax, 0x42, 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 - <a href='092stack.subx.html#L284'>test-pop</a>: result"</span>/imm32 +<span id="L304" class="LineNr">304 </span> 68/push 0x42/imm32 +<span id="L305" class="LineNr">305 </span> 50/push-eax +<span id="L306" class="LineNr">306 </span> <span class="subxS2Comment"># . . call</span> +<span id="L307" class="LineNr">307 </span> e8/call <a href='051test.subx.html#L23'>check-ints-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"># check top</span> +<span id="L311" class="LineNr">311 </span> 58/pop-to-eax +<span id="L312" class="LineNr">312 </span> <span class="subxS1Comment"># . check-ints-equal(eax, 0, msg)</span> +<span id="L313" class="LineNr">313 </span> <span class="subxS2Comment"># . . push args</span> +<span id="L314" class="LineNr">314 </span> 68/push <span class="Constant">"F - <a href='092stack.subx.html#L284'>test-pop</a>: top"</span>/imm32 +<span id="L315" class="LineNr">315 </span> 68/push 0/imm32 +<span id="L316" class="LineNr">316 </span> 50/push-eax +<span id="L317" class="LineNr">317 </span> <span class="subxS2Comment"># . . call</span> +<span id="L318" class="LineNr">318 </span> e8/call <a href='051test.subx.html#L23'>check-ints-equal</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> 0xc/imm32 <span class="subxComment"># add to esp</span> +<span id="L321" class="LineNr">321 </span> <span class="subxComment"># check size</span> +<span id="L322" class="LineNr">322 </span> 58/pop-to-eax +<span id="L323" class="LineNr">323 </span> <span class="subxS1Comment"># . check-ints-equal(eax, 8, msg)</span> +<span id="L324" class="LineNr">324 </span> <span class="subxS2Comment"># . . push args</span> +<span id="L325" class="LineNr">325 </span> 68/push <span class="Constant">"F - <a href='092stack.subx.html#L284'>test-pop</a>: size"</span>/imm32 +<span id="L326" class="LineNr">326 </span> 68/push 8/imm32 +<span id="L327" class="LineNr">327 </span> 50/push-eax +<span id="L328" class="LineNr">328 </span> <span class="subxS2Comment"># . . call</span> +<span id="L329" class="LineNr">329 </span> e8/call <a href='051test.subx.html#L23'>check-ints-equal</a>/disp32 +<span id="L330" class="LineNr">330 </span> <span class="subxS2Comment"># . . discard args</span> +<span id="L331" class="LineNr">331 </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="L332" class="LineNr">332 </span> <span class="subxS1Comment"># . epilogue</span> +<span id="L333" class="LineNr">333 </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="L334" class="LineNr">334 </span> 5d/pop-to-ebp +<span id="L335" class="LineNr">335 </span> c3/return +<span id="L336" class="LineNr">336 </span> +<span id="L337" class="LineNr">337 </span><span class="subxComment"># TODO: make this generic</span> +<span id="L338" class="LineNr">338 </span><span class="subxFunction">top</span>: <span class="subxComment"># s: (addr stack) -> n/eax: int</span> +<span id="L339" class="LineNr">339 </span> <span class="subxS1Comment"># . prologue</span> +<span id="L340" class="LineNr">340 </span> 55/push-ebp +<span id="L341" class="LineNr">341 </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="L342" class="LineNr">342 </span> <span class="subxS1Comment"># . save registers</span> +<span id="L343" class="LineNr">343 </span> 51/push-ecx +<span id="L344" class="LineNr">344 </span> 56/push-esi +<span id="L345" class="LineNr">345 </span> <span class="subxComment"># esi = s</span> +<span id="L346" class="LineNr">346 </span> 8b/copy 1/mod/*+disp8 5/rm32/ebp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 6/r32/esi 8/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy *(ebp+8) to esi</span> +<span id="L347" class="LineNr">347 </span> <span class="subxComment"># if (s->top <= 0) abort</span> +<span id="L348" class="LineNr">348 </span> 81 7/subop/compare 0/mod/indirect 6/rm32/esi <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 0/imm32 <span class="subxComment"># compare *esi</span> +<span id="L349" class="LineNr">349 </span> 7e/jump-if-<= $top:abort/disp8 +<span id="L350" class="LineNr">350 </span> <span class="subxComment"># n = s->data[s->top - 4]</span> +<span id="L351" class="LineNr">351 </span> 8b/copy 0/mod/indirect 6/rm32/esi <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 1/r32/ecx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy *esi to ecx</span> +<span id="L352" class="LineNr">352 </span> 81 5/subop/subtract 3/mod/direct 1/rm32/ecx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 4/imm32 <span class="subxComment"># subtract from ecx</span> +<span id="L353" class="LineNr">353 </span> 8b/copy 1/mod/*+disp8 4/rm32/sib 6/base/esi 1/index/ecx <span class="Normal"> . </span> 0/r32/eax 8/disp8 <span class="Normal"> . </span> <span class="subxComment"># copy *(esi+ecx+8) to eax</span> +<span id="L354" class="LineNr">354 </span><span class="Constant">$top:end</span>: +<span id="L355" class="LineNr">355 </span> <span class="subxS1Comment"># . restore registers</span> +<span id="L356" class="LineNr">356 </span> 5e/pop-to-esi +<span id="L357" class="LineNr">357 </span> 59/pop-to-ecx +<span id="L358" class="LineNr">358 </span> <span class="subxS1Comment"># . epilogue</span> +<span id="L359" class="LineNr">359 </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="L360" class="LineNr">360 </span> 5d/pop-to-ebp +<span id="L361" class="LineNr">361 </span> c3/return +<span id="L362" class="LineNr">362 </span> +<span id="L363" class="LineNr">363 </span><span class="Constant">$top:abort</span>: +<span id="L364" class="LineNr">364 </span> <span class="subxComment"># print(stderr, "error: top: nothing left in stack")</span> +<span id="L365" class="LineNr">365 </span> <span class="subxS1Comment"># . write-buffered(Stderr, "error: top: nothing left in stack")</span> +<span id="L366" class="LineNr">366 </span> <span class="subxS2Comment"># . . push args</span> +<span id="L367" class="LineNr">367 </span> 68/push <span class="Constant">"error: <a href='092stack.subx.html#L338'>top</a>: nothing left in stack"</span>/imm32 +<span id="L368" class="LineNr">368 </span> 68/push <span class="SpecialChar"><a href='065write-buffered.subx.html#L209'>Stderr</a></span>/imm32 +<span id="L369" class="LineNr">369 </span> <span class="subxS2Comment"># . . call</span> +<span id="L370" class="LineNr">370 </span> e8/call <a href='065write-buffered.subx.html#L8'>write-buffered</a>/disp32 +<span id="L371" class="LineNr">371 </span> <span class="subxS2Comment"># . . discard args</span> +<span id="L372" class="LineNr">372 </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="L373" class="LineNr">373 </span> <span class="subxS1Comment"># . flush(Stderr)</span> +<span id="L374" class="LineNr">374 </span> <span class="subxS2Comment"># . . push args</span> +<span id="L375" class="LineNr">375 </span> 68/push <span class="SpecialChar"><a href='065write-buffered.subx.html#L209'>Stderr</a></span>/imm32 +<span id="L376" class="LineNr">376 </span> <span class="subxS2Comment"># . . call</span> +<span id="L377" class="LineNr">377 </span> e8/call <a href='064write-byte.subx.html#L81'>flush</a>/disp32 +<span id="L378" class="LineNr">378 </span> <span class="subxS2Comment"># . . discard args</span> +<span id="L379" class="LineNr">379 </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="L380" class="LineNr">380 </span> <span class="subxS1Comment"># . syscall(exit, 1)</span> +<span id="L381" class="LineNr">381 </span> bb/copy-to-ebx 1/imm32 +<span id="L382" class="LineNr">382 </span> e8/call syscall_exit/disp32 +<span id="L383" class="LineNr">383 </span> <span class="subxComment"># never gets here</span> +<span id="L384" class="LineNr">384 </span> +<span id="L385" class="LineNr">385 </span><span class="subxTest">test-top</span>: +<span id="L386" class="LineNr">386 </span> <span class="subxS1Comment"># . prologue</span> +<span id="L387" class="LineNr">387 </span> 55/push-ebp +<span id="L388" class="LineNr">388 </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="L389" class="LineNr">389 </span> <span class="subxComment"># var stack/ecx = stack of size 8 containing just 0x42</span> +<span id="L390" class="LineNr">390 </span> 68/push 0/imm32 +<span id="L391" class="LineNr">391 </span> 68/push 0x42/imm32 +<span id="L392" class="LineNr">392 </span> 68/push 8/imm32/size +<span id="L393" class="LineNr">393 </span> 68/push 4/imm32/top +<span id="L394" class="LineNr">394 </span> 89/copy 3/mod/direct 1/rm32/ecx <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="Normal"> . </span> 4/r32/esp <span class="Normal"> . </span> <span class="Normal"> . </span> <span class="subxComment"># copy esp to ecx</span> +<span id="L395" class="LineNr">395 </span> <span class="subxComment"># eax = top(stack)</span> +<span id="L396" class="LineNr">396 </span> <span class="subxS2Comment"># . . push args</span> +<span id="L397" class="LineNr">397 </span> 51/push-ecx +<span id="L398" class="LineNr">398 </span> <span class="subxS2Comment"># . . call</span> +<span id="L399" class="LineNr">399 </span> e8/call <a href='092stack.subx.html#L338'>top</a>/disp32 +<span id="L400" class="LineNr">400 </span> <span class="subxS2Comment"># . . discard args</span> +<span id="L401" class="LineNr">401 </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="L402" class="LineNr">402 </span> <span class="subxComment"># check-ints-equal(eax, 42, msg")</span> +<span id="L403" class="LineNr">403 </span> <span class="subxS2Comment"># . . push args</span> +<span id="L404" class="LineNr">404 </span> 68/push <span class="Constant">"F - <a href='092stack.subx.html#L385'>test-top</a>: result"</span>/imm32 +<span id="L405" class="LineNr">405 </span> 68/push 0x42/imm32 +<span id="L406" class="LineNr">406 </span> 50/push-eax +<span id="L407" class="LineNr">407 </span> <span class="subxS2Comment"># . . call</span> +<span id="L408" class="LineNr">408 </span> e8/call <a href='051test.subx.html#L23'>check-ints-equal</a>/disp32 +<span id="L409" class="LineNr">409 </span> <span class="subxS2Comment"># . . discard args</span> +<span id="L410" class="LineNr">410 </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="L411" class="LineNr">411 </span> <span class="subxS1Comment"># . epilogue</span> +<span id="L412" class="LineNr">412 </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="L413" class="LineNr">413 </span> 5d/pop-to-ebp +<span id="L414" class="LineNr">414 </span> c3/return +<span id="L415" class="LineNr">415 </span> +<span id="L416" class="LineNr">416 </span><span class="subxS2Comment"># . . vim:nowrap:textwidth=0</span> </pre> </body> </html> |