diff options
Diffstat (limited to 'html/subx/apps/crenshaw2-1.subx.html')
| -rw-r--r-- | html/subx/apps/crenshaw2-1.subx.html | 1095 |
1 files changed, 548 insertions, 547 deletions
diff --git a/html/subx/apps/crenshaw2-1.subx.html b/html/subx/apps/crenshaw2-1.subx.html index 05687d5e..5fd8df12 100644 --- a/html/subx/apps/crenshaw2-1.subx.html +++ b/html/subx/apps/crenshaw2-1.subx.html @@ -154,553 +154,554 @@ if ('onhashchange' in window) { <span id="L88" class="LineNr"> 88 </span> <span class="subxS1Comment"># . save registers</span> <span id="L89" class="LineNr"> 89 </span> 50/push-EAX <span id="L90" class="LineNr"> 90 </span> 51/push-ECX -<span id="L91" class="LineNr"> 91 </span> <span class="subxS1Comment"># . Look = get-char(in)</span> -<span id="L92" class="LineNr"> 92 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L93" class="LineNr"> 93 </span> ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 8/disp8 <span class="CommentedCode"> . </span> <span class="subxComment"># push *(EBP+8)</span> -<span id="L94" class="LineNr"> 94 </span> <span class="subxS2Comment"># . . call</span> -<span id="L95" class="LineNr"> 95 </span> e8/call get-char/disp32 -<span id="L96" class="LineNr"> 96 </span> <span class="subxS2Comment"># . . discard args</span> -<span id="L97" class="LineNr"> 97 </span> 81 0/subop/add 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 4/imm32 <span class="subxComment"># add to ESP</span> -<span id="L98" class="LineNr"> 98 </span> <span class="subxComment"># var num/ECX : (address stream) on the stack</span> -<span id="L99" class="LineNr"> 99 </span> <span class="subxComment"># Numbers can be 32 bits or 8 hex bytes long. One of them will be in 'Look', so we need space for 7 bytes.</span> -<span id="L100" class="LineNr">100 </span> <span class="subxComment"># Sizing the stream just right buys us overflow-handling for free inside 'get-num'.</span> -<span id="L101" class="LineNr">101 </span> <span class="subxComment"># Add 12 bytes for 'read', 'write' and 'length' fields, for a total of 19 bytes, or 0x13 in hex.</span> -<span id="L102" class="LineNr">102 </span> <span class="subxComment"># The stack pointer is no longer aligned, so dump_stack() can be misleading past this point.</span> -<span id="L103" class="LineNr">103 </span> 81 5/subop/subtract 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 0x13/imm32 <span class="subxComment"># subtract from ESP</span> -<span id="L104" class="LineNr">104 </span> 8d/copy-address 0/mod/indirect 4/rm32/sib 4/base/ESP 4/index/none <span class="CommentedCode"> . </span> 1/r32/ECX <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="subxComment"># copy ESP to ECX</span> -<span id="L105" class="LineNr">105 </span> <span class="subxComment"># initialize the stream</span> -<span id="L106" class="LineNr">106 </span> <span class="subxS1Comment"># . num->length = 7</span> -<span id="L107" class="LineNr">107 </span> c7/copy 1/mod/*+disp8 1/rm32/ECX <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 8/disp8 7/imm32 <span class="subxComment"># copy to *(ECX+8)</span> -<span id="L108" class="LineNr">108 </span> <span class="subxS1Comment"># . clear-stream(num)</span> -<span id="L109" class="LineNr">109 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L110" class="LineNr">110 </span> 51/push-ECX -<span id="L111" class="LineNr">111 </span> <span class="subxS2Comment"># . . call</span> -<span id="L112" class="LineNr">112 </span> e8/call clear-stream/disp32 -<span id="L113" class="LineNr">113 </span> <span class="subxS2Comment"># . . discard args</span> -<span id="L114" class="LineNr">114 </span> 81 0/subop/add 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 4/imm32 <span class="subxComment"># add to ESP</span> -<span id="L115" class="LineNr">115 </span> <span class="subxComment"># read a digit from 'in' into 'num'</span> -<span id="L116" class="LineNr">116 </span> <span class="subxS1Comment"># . get-num(in, num, err, ed)</span> -<span id="L117" class="LineNr">117 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L118" class="LineNr">118 </span> ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 0x14/disp8 <span class="CommentedCode"> . </span> <span class="subxComment"># push *(EBP+20)</span> -<span id="L119" class="LineNr">119 </span> ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 0x10/disp8 <span class="CommentedCode"> . </span> <span class="subxComment"># push *(EBP+16)</span> -<span id="L120" class="LineNr">120 </span> 51/push-ECX/num -<span id="L121" class="LineNr">121 </span> ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 8/disp8 <span class="CommentedCode"> . </span> <span class="subxComment"># push *(EBP+8)</span> -<span id="L122" class="LineNr">122 </span> <span class="subxS2Comment"># . . call</span> -<span id="L123" class="LineNr">123 </span> e8/call get-num/disp32 -<span id="L124" class="LineNr">124 </span> <span class="subxS2Comment"># . . discard args</span> -<span id="L125" class="LineNr">125 </span> 81 0/subop/add 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 0x10/imm32 <span class="subxComment"># add to ESP</span> -<span id="L126" class="LineNr">126 </span> <span class="subxComment"># render 'num' into the following template on 'out':</span> -<span id="L127" class="LineNr">127 </span> <span class="subxComment"># bb/copy-to-EBX _num_</span> -<span id="L128" class="LineNr">128 </span> <span class="subxComment"># b8/copy-to-EAX 1/imm32/exit</span> -<span id="L129" class="LineNr">129 </span> <span class="subxComment"># cd/syscall 0x80/imm8</span> -<span id="L130" class="LineNr">130 </span> <span class="subxComment">#</span> -<span id="L131" class="LineNr">131 </span> <span class="subxS1Comment"># . EAX = write(out, "bb/copy-to-EBX ")</span> -<span id="L132" class="LineNr">132 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L133" class="LineNr">133 </span> 68/push <span class="Constant">"bb/copy-to-EBX "</span>/imm32 -<span id="L134" class="LineNr">134 </span> ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 0xc/disp8 <span class="CommentedCode"> . </span> <span class="subxComment"># push *(EBP+12)</span> -<span id="L135" class="LineNr">135 </span> <span class="subxS2Comment"># . . call</span> -<span id="L136" class="LineNr">136 </span> e8/call write/disp32 -<span id="L137" class="LineNr">137 </span> <span class="subxS2Comment"># . . discard args</span> -<span id="L138" class="LineNr">138 </span> 81 0/subop/add 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 8/imm32 <span class="subxComment"># add to ESP</span> -<span id="L139" class="LineNr">139 </span> <span class="subxS1Comment"># . write-stream(out, num)</span> -<span id="L140" class="LineNr">140 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L141" class="LineNr">141 </span> 51/push-ECX/num -<span id="L142" class="LineNr">142 </span> ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 0xc/disp8 <span class="CommentedCode"> . </span> <span class="subxComment"># push *(EBP+12)</span> -<span id="L143" class="LineNr">143 </span> <span class="subxS2Comment"># . . call</span> -<span id="L144" class="LineNr">144 </span> e8/call write-stream/disp32 -<span id="L145" class="LineNr">145 </span> <span class="subxS2Comment"># . . discard args</span> -<span id="L146" class="LineNr">146 </span> 81 0/subop/add 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 8/imm32 <span class="subxComment"># add to ESP</span> -<span id="L147" class="LineNr">147 </span> <span class="subxS1Comment"># . write(out, Newline)</span> -<span id="L148" class="LineNr">148 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L149" class="LineNr">149 </span> 68/push <span class="SpecialChar">Newline</span>/imm32 -<span id="L150" class="LineNr">150 </span> ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 0xc/disp8 <span class="CommentedCode"> . </span> <span class="subxComment"># push *(EBP+12)</span> -<span id="L151" class="LineNr">151 </span> <span class="subxS2Comment"># . . call</span> -<span id="L152" class="LineNr">152 </span> e8/call write/disp32 -<span id="L153" class="LineNr">153 </span> <span class="subxS2Comment"># . . discard args</span> -<span id="L154" class="LineNr">154 </span> 81 0/subop/add 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 8/imm32 <span class="subxComment"># add to ESP</span> -<span id="L155" class="LineNr">155 </span> <span class="subxS1Comment"># . write(out, "b8/copy-to-EAX 1/imm32/exit")</span> -<span id="L156" class="LineNr">156 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L157" class="LineNr">157 </span> 68/push <span class="Constant">"b8/copy-to-EAX 1/imm32/exit"</span>/imm32 -<span id="L158" class="LineNr">158 </span> ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 0xc/disp8 <span class="CommentedCode"> . </span> <span class="subxComment"># push *(EBP+12)</span> -<span id="L159" class="LineNr">159 </span> <span class="subxS2Comment"># . . call</span> -<span id="L160" class="LineNr">160 </span> e8/call write/disp32 -<span id="L161" class="LineNr">161 </span> <span class="subxS2Comment"># . . discard args</span> -<span id="L162" class="LineNr">162 </span> 81 0/subop/add 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 8/imm32 <span class="subxComment"># add to ESP</span> -<span id="L163" class="LineNr">163 </span> <span class="subxS1Comment"># . write(out, Newline)</span> -<span id="L164" class="LineNr">164 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L165" class="LineNr">165 </span> 68/push <span class="SpecialChar">Newline</span>/imm32 -<span id="L166" class="LineNr">166 </span> ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 0xc/disp8 <span class="CommentedCode"> . </span> <span class="subxComment"># push *(EBP+12)</span> -<span id="L167" class="LineNr">167 </span> <span class="subxS2Comment"># . . call</span> -<span id="L168" class="LineNr">168 </span> e8/call write/disp32 -<span id="L169" class="LineNr">169 </span> <span class="subxS2Comment"># . . discard args</span> -<span id="L170" class="LineNr">170 </span> 81 0/subop/add 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 8/imm32 <span class="subxComment"># add to ESP</span> -<span id="L171" class="LineNr">171 </span> <span class="subxS1Comment"># . write(out, "cd/syscall 0x80/imm8")</span> -<span id="L172" class="LineNr">172 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L173" class="LineNr">173 </span> 68/push <span class="Constant">"cd/syscall 0x80/imm8"</span>/imm32 -<span id="L174" class="LineNr">174 </span> ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 0xc/disp8 <span class="CommentedCode"> . </span> <span class="subxComment"># push *(EBP+12)</span> -<span id="L175" class="LineNr">175 </span> <span class="subxS2Comment"># . . call</span> -<span id="L176" class="LineNr">176 </span> e8/call write/disp32 -<span id="L177" class="LineNr">177 </span> <span class="subxS2Comment"># . . discard args</span> -<span id="L178" class="LineNr">178 </span> 81 0/subop/add 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 8/imm32 <span class="subxComment"># add to ESP</span> -<span id="L179" class="LineNr">179 </span> <span class="subxS1Comment"># . write(out, Newline)</span> -<span id="L180" class="LineNr">180 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L181" class="LineNr">181 </span> 68/push <span class="SpecialChar">Newline</span>/imm32 -<span id="L182" class="LineNr">182 </span> ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 0xc/disp8 <span class="CommentedCode"> . </span> <span class="subxComment"># push *(EBP+12)</span> -<span id="L183" class="LineNr">183 </span> <span class="subxS2Comment"># . . call</span> -<span id="L184" class="LineNr">184 </span> e8/call write/disp32 -<span id="L185" class="LineNr">185 </span> <span class="subxS2Comment"># . . discard args</span> -<span id="L186" class="LineNr">186 </span> 81 0/subop/add 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 8/imm32 <span class="subxComment"># add to ESP</span> -<span id="L187" class="LineNr">187 </span> <span class="subxS1Comment"># . restore registers</span> -<span id="L188" class="LineNr">188 </span> 59/pop-to-ECX -<span id="L189" class="LineNr">189 </span> 58/pop-to-EAX -<span id="L190" class="LineNr">190 </span> <span class="subxS1Comment"># . epilog</span> -<span id="L191" class="LineNr">191 </span> 89/copy 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 5/r32/EBP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="subxComment"># copy EBP to ESP</span> -<span id="L192" class="LineNr">192 </span> 5d/pop-to-EBP -<span id="L193" class="LineNr">193 </span> c3/return -<span id="L194" class="LineNr">194 </span> -<span id="L195" class="LineNr">195 </span><span class="subxComment"># Read a single digit into 'out'. Abort if there are none, or if there is no space in 'out'.</span> -<span id="L196" class="LineNr">196 </span><span class="subxComment"># Input comes from the global variable 'Look', and we leave the next byte from</span> -<span id="L197" class="LineNr">197 </span><span class="subxComment"># 'in' into it on exit.</span> -<span id="L198" class="LineNr">198 </span><span class="subxFunction">get-num</span>: <span class="subxComment"># in : (address buffered-file), out : (address stream), err : fd or (address stream), ed : (address exit-descriptor) -> <void></span> -<span id="L199" class="LineNr">199 </span> <span class="subxComment"># pseudocode:</span> -<span id="L200" class="LineNr">200 </span> <span class="subxComment"># if !is-digit?(Look) expected(ed, err, "integer")</span> -<span id="L201" class="LineNr">201 </span> <span class="subxComment"># if out.write >= out.length</span> -<span id="L202" class="LineNr">202 </span> <span class="subxComment"># write(err, "Error: too many digits in number\n")</span> -<span id="L203" class="LineNr">203 </span> <span class="subxComment"># stop(ed, 1)</span> -<span id="L204" class="LineNr">204 </span> <span class="subxComment"># out.data[out.write] = LSB(Look)</span> -<span id="L205" class="LineNr">205 </span> <span class="subxComment"># ++out.write</span> -<span id="L206" class="LineNr">206 </span> <span class="subxComment"># Look = get-char(in)</span> -<span id="L207" class="LineNr">207 </span> <span class="subxComment">#</span> -<span id="L208" class="LineNr">208 </span> <span class="subxComment"># registers:</span> -<span id="L209" class="LineNr">209 </span> <span class="subxComment"># ESI : in</span> -<span id="L210" class="LineNr">210 </span> <span class="subxComment"># EDI : out</span> -<span id="L211" class="LineNr">211 </span> <span class="subxComment"># EAX : temp</span> -<span id="L212" class="LineNr">212 </span> <span class="subxComment"># ECX : out->write</span> -<span id="L213" class="LineNr">213 </span> <span class="subxComment"># EDX : out->length</span> -<span id="L214" class="LineNr">214 </span> <span class="subxComment"># EBX : temp2</span> -<span id="L215" class="LineNr">215 </span> <span class="subxComment"># We can't allocate Look to a register because it gets written implicitly in</span> -<span id="L216" class="LineNr">216 </span> <span class="subxComment"># get-char in each iteration of the loop. (Thereby demonstrating that it's</span> -<span id="L217" class="LineNr">217 </span> <span class="subxComment"># not the right interface for us. But we'll keep it just to follow Crenshaw.)</span> -<span id="L218" class="LineNr">218 </span> <span class="subxComment">#</span> -<span id="L219" class="LineNr">219 </span> <span class="subxS1Comment"># . prolog</span> -<span id="L220" class="LineNr">220 </span> 55/push-EBP -<span id="L221" class="LineNr">221 </span> 89/copy 3/mod/direct 5/rm32/EBP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 4/r32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="subxComment"># copy ESP to EBP</span> -<span id="L222" class="LineNr">222 </span> <span class="subxH1Comment"># - if is-digit?(Look) expected(ed, err, "integer")</span> -<span id="L223" class="LineNr">223 </span> <span class="subxS1Comment"># . EAX = is-digit?(Look)</span> -<span id="L224" class="LineNr">224 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L225" class="LineNr">225 </span> ff 6/subop/push 0/mod/indirect 5/rm32/.disp32 <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="SpecialChar">Look</span>/disp32 <span class="CommentedCode"> . </span> <span class="subxComment"># push *Look</span> -<span id="L226" class="LineNr">226 </span> <span class="subxS2Comment"># . . call</span> -<span id="L227" class="LineNr">227 </span> e8/call is-digit?/disp32 -<span id="L228" class="LineNr">228 </span> <span class="subxS2Comment"># . . discard args</span> -<span id="L229" class="LineNr">229 </span> 81 0/subop/add 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 4/imm32 <span class="subxComment"># add to ESP</span> -<span id="L230" class="LineNr">230 </span> <span class="subxS1Comment"># . if EAX == 0</span> -<span id="L231" class="LineNr">231 </span> 3d/compare-EAX 0/imm32 -<span id="L232" class="LineNr">232 </span> 75/jump-if-not-equal $get-num:main/disp8 -<span id="L233" class="LineNr">233 </span> <span class="subxS1Comment"># . expected(ed, err, "integer")</span> -<span id="L234" class="LineNr">234 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L235" class="LineNr">235 </span> 68/push <span class="Constant">"integer"</span>/imm32 -<span id="L236" class="LineNr">236 </span> ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 0x10/disp8 <span class="CommentedCode"> . </span> <span class="subxComment"># push *(EBP+16)</span> -<span id="L237" class="LineNr">237 </span> ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 0x14/disp8 <span class="CommentedCode"> . </span> <span class="subxComment"># push *(EBP+20)</span> -<span id="L238" class="LineNr">238 </span> <span class="subxS2Comment"># . . call</span> -<span id="L239" class="LineNr">239 </span> e8/call expected/disp32 <span class="subxComment"># never returns</span> -<span id="L240" class="LineNr">240 </span> <span class="subxS2Comment"># . . discard args</span> -<span id="L241" class="LineNr">241 </span> 81 0/subop/add 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 0xc/imm32 <span class="subxComment"># add to ESP</span> -<span id="L242" class="LineNr">242 </span><span class="Constant">$get-num:main</span>: -<span id="L243" class="LineNr">243 </span> <span class="subxH1Comment"># - otherwise read a digit</span> -<span id="L244" class="LineNr">244 </span> <span class="subxS1Comment"># . save registers</span> -<span id="L245" class="LineNr">245 </span> 50/push-EAX -<span id="L246" class="LineNr">246 </span> 51/push-ECX -<span id="L247" class="LineNr">247 </span> 52/push-EDX -<span id="L248" class="LineNr">248 </span> 53/push-EBX -<span id="L249" class="LineNr">249 </span> 56/push-ESI -<span id="L250" class="LineNr">250 </span> 57/push-EDI -<span id="L251" class="LineNr">251 </span> <span class="subxComment"># read necessary variables to registers</span> -<span id="L252" class="LineNr">252 </span> <span class="subxComment"># ESI = in</span> -<span id="L253" class="LineNr">253 </span> 8b/copy 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none <span class="CommentedCode"> . </span> 6/r32/ESI 8/disp8 <span class="CommentedCode"> . </span> <span class="subxComment"># copy *(EBP+8) to ESI</span> -<span id="L254" class="LineNr">254 </span> <span class="subxComment"># EDI = out</span> -<span id="L255" class="LineNr">255 </span> 8b/copy 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none <span class="CommentedCode"> . </span> 7/r32/EDI 0xc/disp8 <span class="CommentedCode"> . </span> <span class="subxComment"># copy *(EBP+12) to EDI</span> -<span id="L256" class="LineNr">256 </span> <span class="subxComment"># ECX = out->write</span> -<span id="L257" class="LineNr">257 </span> 8b/copy 0/mod/indirect 7/rm32/EDI <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 1/r32/ECX <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="subxComment"># copy *EDI to ECX</span> -<span id="L258" class="LineNr">258 </span> <span class="subxComment"># EDX = out->length</span> -<span id="L259" class="LineNr">259 </span> 8b/copy 1/mod/*+disp8 7/rm32/EDI <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 2/r32/EDX 8/disp8 <span class="CommentedCode"> . </span> <span class="subxComment"># copy *(EDI+8) to EDX</span> -<span id="L260" class="LineNr">260 </span> <span class="subxComment"># if out->write >= out->length error</span> -<span id="L261" class="LineNr">261 </span> 3b/compare 3/mod/direct 1/rm32/ECX <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 2/r32/EDX <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="subxComment"># compare EDX with ECX</span> -<span id="L262" class="LineNr">262 </span> 7d/jump-if-lesser $get-num:stage2/disp8 -<span id="L263" class="LineNr">263 </span> <span class="subxS1Comment"># . error(ed, err, msg) # TODO: show full number</span> -<span id="L264" class="LineNr">264 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L265" class="LineNr">265 </span> 68/push <span class="Constant">"get-num: too many digits in number"</span>/imm32 -<span id="L266" class="LineNr">266 </span> ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 0x10/disp8 <span class="CommentedCode"> . </span> <span class="subxComment"># push *(EBP+16)</span> -<span id="L267" class="LineNr">267 </span> ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 0x14/disp8 <span class="CommentedCode"> . </span> <span class="subxComment"># push *(EBP+20)</span> -<span id="L268" class="LineNr">268 </span> <span class="subxS2Comment"># . . call</span> -<span id="L269" class="LineNr">269 </span> e8/call error/disp32 <span class="subxComment"># never returns</span> -<span id="L270" class="LineNr">270 </span> <span class="subxS2Comment"># . . discard args</span> -<span id="L271" class="LineNr">271 </span> 81 0/subop/add 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 0xc/imm32 <span class="subxComment"># add to ESP</span> -<span id="L272" class="LineNr">272 </span><span class="Constant">$get-num:stage2</span>: -<span id="L273" class="LineNr">273 </span> <span class="subxComment"># out->data[out->write] = LSB(Look)</span> -<span id="L274" class="LineNr">274 </span> 8d/copy-address 1/mod/*+disp8 4/rm32/sib 7/base/EDI 1/index/ECX <span class="CommentedCode"> . </span> 3/r32/EBX 0xc/disp8 <span class="CommentedCode"> . </span> <span class="subxComment"># copy EDI+ECX+12 to EBX</span> -<span id="L275" class="LineNr">275 </span> 8b/copy 0/mod/indirect 5/rm32/.disp32 <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 0/r32/EAX <span class="SpecialChar">Look</span>/disp32 <span class="CommentedCode"> . </span> <span class="subxComment"># copy *Look to EAX</span> -<span id="L276" class="LineNr">276 </span> 88/copy-byte 0/mod/indirect 3/rm32/EBX <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 0/r32/AL <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="subxComment"># copy byte at AL to *EBX</span> -<span id="L277" class="LineNr">277 </span> <span class="subxComment"># ++out->write</span> -<span id="L278" class="LineNr">278 </span> 41/increment-ECX -<span id="L279" class="LineNr">279 </span> <span class="subxComment"># Look = get-char(in)</span> -<span id="L280" class="LineNr">280 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L281" class="LineNr">281 </span> 56/push-ESI -<span id="L282" class="LineNr">282 </span> <span class="subxS2Comment"># . . call</span> -<span id="L283" class="LineNr">283 </span> e8/call get-char/disp32 -<span id="L284" class="LineNr">284 </span> <span class="subxS2Comment"># . . discard args</span> -<span id="L285" class="LineNr">285 </span> 81 0/subop/add 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 4/imm32 <span class="subxComment"># add to ESP</span> -<span id="L286" class="LineNr">286 </span><span class="Constant">$get-num:loop-end</span>: -<span id="L287" class="LineNr">287 </span> <span class="subxComment"># persist necessary variables from registers</span> -<span id="L288" class="LineNr">288 </span> 89/copy 0/mod/indirect 7/rm32/EDI <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 1/r32/ECX <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="subxComment"># copy ECX to *EDI</span> -<span id="L289" class="LineNr">289 </span> <span class="subxS1Comment"># . restore registers</span> -<span id="L290" class="LineNr">290 </span> 5f/pop-to-EDI -<span id="L291" class="LineNr">291 </span> 5e/pop-to-ESI -<span id="L292" class="LineNr">292 </span> 5b/pop-to-EBX -<span id="L293" class="LineNr">293 </span> 5a/pop-to-EDX -<span id="L294" class="LineNr">294 </span> 59/pop-to-ECX -<span id="L295" class="LineNr">295 </span> 58/pop-to-EAX -<span id="L296" class="LineNr">296 </span> <span class="subxS1Comment"># . epilog</span> -<span id="L297" class="LineNr">297 </span> 89/copy 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 5/r32/EBP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="subxComment"># copy EBP to ESP</span> -<span id="L298" class="LineNr">298 </span> 5d/pop-to-EBP -<span id="L299" class="LineNr">299 </span> c3/return -<span id="L300" class="LineNr">300 </span> -<span id="L301" class="LineNr">301 </span><span class="subxTest">test-get-num-reads-single-digit</span>: -<span id="L302" class="LineNr">302 </span> <span class="subxH1Comment"># - check that get-num returns first character if it's a digit</span> -<span id="L303" class="LineNr">303 </span> <span class="subxComment"># This test uses exit-descriptors. Use EBP for setting up local variables.</span> -<span id="L304" class="LineNr">304 </span> 55/push-EBP -<span id="L305" class="LineNr">305 </span> 89/copy 3/mod/direct 5/rm32/EBP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 4/r32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="subxComment"># copy ESP to EBP</span> -<span id="L306" class="LineNr">306 </span> <span class="subxComment"># setup</span> -<span id="L307" class="LineNr">307 </span> <span class="subxS1Comment"># . clear-stream(_test-stream)</span> -<span id="L308" class="LineNr">308 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L309" class="LineNr">309 </span> 68/push _test-stream/imm32 -<span id="L310" class="LineNr">310 </span> <span class="subxS2Comment"># . . call</span> -<span id="L311" class="LineNr">311 </span> e8/call clear-stream/disp32 -<span id="L312" class="LineNr">312 </span> <span class="subxS2Comment"># . . discard args</span> -<span id="L313" class="LineNr">313 </span> 81 0/subop/add 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 4/imm32 <span class="subxComment"># add to ESP</span> -<span id="L314" class="LineNr">314 </span> <span class="subxS1Comment"># . clear-stream(_test-buffered-file+4)</span> -<span id="L315" class="LineNr">315 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L316" class="LineNr">316 </span> b8/copy-to-EAX _test-buffered-file/imm32 -<span id="L317" class="LineNr">317 </span> 05/add-to-EAX 4/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 clear-stream/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="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 4/imm32 <span class="subxComment"># add to ESP</span> -<span id="L323" class="LineNr">323 </span> <span class="subxS1Comment"># . clear-stream(_test-output-stream)</span> -<span id="L324" class="LineNr">324 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L325" class="LineNr">325 </span> 68/push _test-output-stream/imm32 -<span id="L326" class="LineNr">326 </span> <span class="subxS2Comment"># . . call</span> -<span id="L327" class="LineNr">327 </span> e8/call clear-stream/disp32 -<span id="L328" class="LineNr">328 </span> <span class="subxS2Comment"># . . discard args</span> -<span id="L329" class="LineNr">329 </span> 81 0/subop/add 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 4/imm32 <span class="subxComment"># add to ESP</span> -<span id="L330" class="LineNr">330 </span> <span class="subxS1Comment"># . clear-stream(_test-error-stream)</span> -<span id="L331" class="LineNr">331 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L332" class="LineNr">332 </span> 68/push _test-error-stream/imm32 -<span id="L333" class="LineNr">333 </span> <span class="subxS2Comment"># . . call</span> -<span id="L334" class="LineNr">334 </span> e8/call clear-stream/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="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 4/imm32 <span class="subxComment"># add to ESP</span> -<span id="L337" class="LineNr">337 </span> <span class="subxComment"># initialize 'in'</span> -<span id="L338" class="LineNr">338 </span> <span class="subxS1Comment"># . write(_test-stream, "3")</span> -<span id="L339" class="LineNr">339 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L340" class="LineNr">340 </span> 68/push <span class="Constant">"3"</span>/imm32 -<span id="L341" class="LineNr">341 </span> 68/push _test-stream/imm32 -<span id="L342" class="LineNr">342 </span> <span class="subxS2Comment"># . . call</span> -<span id="L343" class="LineNr">343 </span> e8/call write/disp32 -<span id="L344" class="LineNr">344 </span> <span class="subxS2Comment"># . . discard args</span> -<span id="L345" class="LineNr">345 </span> 81 0/subop/add 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 8/imm32 <span class="subxComment"># add to ESP</span> -<span id="L346" class="LineNr">346 </span> <span class="subxComment"># initialize exit-descriptor 'ed' for the call to 'get-num' below</span> -<span id="L347" class="LineNr">347 </span> <span class="subxS1Comment"># . var ed/EAX : exit-descriptor</span> -<span id="L348" class="LineNr">348 </span> 81 5/subop/subtract 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 8/imm32 <span class="subxComment"># subtract from ESP</span> -<span id="L349" class="LineNr">349 </span> 8d/copy-address 0/mod/indirect 4/rm32/sib 4/base/ESP 4/index/none <span class="CommentedCode"> . </span> 0/r32/EAX <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="subxComment"># copy ESP to EAX</span> -<span id="L350" class="LineNr">350 </span> <span class="subxS1Comment"># . tailor-exit-descriptor(ed, 16)</span> -<span id="L351" class="LineNr">351 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L352" class="LineNr">352 </span> 68/push 0x10/imm32/nbytes-of-args-for-get-num -<span id="L353" class="LineNr">353 </span> 50/push-EAX/ed -<span id="L354" class="LineNr">354 </span> <span class="subxS2Comment"># . . call</span> -<span id="L355" class="LineNr">355 </span> e8/call tailor-exit-descriptor/disp32 -<span id="L356" class="LineNr">356 </span> <span class="subxS2Comment"># . . discard args</span> -<span id="L357" class="LineNr">357 </span> 81 0/subop/add 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 8/imm32 <span class="subxComment"># add to ESP</span> -<span id="L358" class="LineNr">358 </span> <span class="subxComment"># prime the pump</span> -<span id="L359" class="LineNr">359 </span> <span class="subxS1Comment"># . get-char(_test-buffered-file)</span> -<span id="L360" class="LineNr">360 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L361" class="LineNr">361 </span> 68/push _test-buffered-file/imm32 -<span id="L362" class="LineNr">362 </span> <span class="subxS2Comment"># . . call</span> -<span id="L363" class="LineNr">363 </span> e8/call get-char/disp32 -<span id="L364" class="LineNr">364 </span> <span class="subxS2Comment"># . . discard args</span> -<span id="L365" class="LineNr">365 </span> 81 0/subop/add 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 4/imm32 <span class="subxComment"># add to ESP</span> -<span id="L366" class="LineNr">366 </span> <span class="subxComment"># get-num(in, out, err, ed)</span> -<span id="L367" class="LineNr">367 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L368" class="LineNr">368 </span> 50/push-EAX/ed -<span id="L369" class="LineNr">369 </span> 68/push _test-error-stream/imm32 -<span id="L370" class="LineNr">370 </span> 68/push _test-output-stream/imm32 -<span id="L371" class="LineNr">371 </span> 68/push _test-buffered-file/imm32 -<span id="L372" class="LineNr">372 </span> <span class="subxS2Comment"># . . call</span> -<span id="L373" class="LineNr">373 </span> e8/call get-num/disp32 -<span id="L374" class="LineNr">374 </span> <span class="subxComment"># registers except ESP may be clobbered at this point</span> -<span id="L375" class="LineNr">375 </span> <span class="subxS2Comment"># . . discard args</span> -<span id="L376" class="LineNr">376 </span> 81 0/subop/add 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 0x10/imm32 <span class="subxComment"># add to ESP</span> -<span id="L377" class="LineNr">377 </span> <span class="subxComment"># check-ints-equal(*_test-output-stream.data, '3')</span> -<span id="L378" class="LineNr">378 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L379" class="LineNr">379 </span> 68/push <span class="Constant">"F - test-get-num-reads-single-digit"</span>/imm32 -<span id="L380" class="LineNr">380 </span> 68/push 0x33/imm32 -<span id="L381" class="LineNr">381 </span> b8/copy-to-EAX _test-output-stream/imm32 -<span id="L382" class="LineNr">382 </span> ff 6/subop/push 1/mod/*+disp8 0/rm32/EAX <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 0xc/disp8 <span class="CommentedCode"> . </span> <span class="subxComment"># push *(EAX+12)</span> -<span id="L383" class="LineNr">383 </span> <span class="subxS2Comment"># . . call</span> -<span id="L384" class="LineNr">384 </span> e8/call check-ints-equal/disp32 -<span id="L385" class="LineNr">385 </span> <span class="subxS2Comment"># . . discard args</span> -<span id="L386" class="LineNr">386 </span> 81 0/subop/add 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 0xc/imm32 <span class="subxComment"># add to ESP</span> -<span id="L387" class="LineNr">387 </span> <span class="subxS1Comment"># . reclaim locals</span> -<span id="L388" class="LineNr">388 </span> 81 0/subop/add 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 8/imm32 <span class="subxComment"># add to ESP</span> -<span id="L389" class="LineNr">389 </span> 5d/pop-to-EBP -<span id="L390" class="LineNr">390 </span> c3/return -<span id="L391" class="LineNr">391 </span> -<span id="L392" class="LineNr">392 </span><span class="subxTest">test-get-num-aborts-on-non-digit-in-Look</span>: -<span id="L393" class="LineNr">393 </span> <span class="subxH1Comment"># - check that get-num returns first character if it's a digit</span> -<span id="L394" class="LineNr">394 </span> <span class="subxComment"># This test uses exit-descriptors. Use EBP for setting up local variables.</span> -<span id="L395" class="LineNr">395 </span> 55/push-EBP -<span id="L396" class="LineNr">396 </span> 89/copy 3/mod/direct 5/rm32/EBP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 4/r32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="subxComment"># copy ESP to EBP</span> -<span id="L397" class="LineNr">397 </span> <span class="subxComment"># setup</span> -<span id="L398" class="LineNr">398 </span> <span class="subxS1Comment"># . clear-stream(_test-stream)</span> -<span id="L399" class="LineNr">399 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L400" class="LineNr">400 </span> 68/push _test-stream/imm32 -<span id="L401" class="LineNr">401 </span> <span class="subxS2Comment"># . . call</span> -<span id="L402" class="LineNr">402 </span> e8/call clear-stream/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="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 4/imm32 <span class="subxComment"># add to ESP</span> -<span id="L405" class="LineNr">405 </span> <span class="subxS1Comment"># . clear-stream(_test-buffered-file+4)</span> -<span id="L406" class="LineNr">406 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L407" class="LineNr">407 </span> b8/copy-to-EAX _test-buffered-file/imm32 -<span id="L408" class="LineNr">408 </span> 05/add-to-EAX 4/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 clear-stream/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="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 4/imm32 <span class="subxComment"># add to ESP</span> -<span id="L414" class="LineNr">414 </span> <span class="subxS1Comment"># . clear-stream(_test-output-stream)</span> -<span id="L415" class="LineNr">415 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L416" class="LineNr">416 </span> 68/push _test-output-stream/imm32 -<span id="L417" class="LineNr">417 </span> <span class="subxS2Comment"># . . call</span> -<span id="L418" class="LineNr">418 </span> e8/call clear-stream/disp32 -<span id="L419" class="LineNr">419 </span> <span class="subxS2Comment"># . . discard args</span> -<span id="L420" class="LineNr">420 </span> 81 0/subop/add 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 4/imm32 <span class="subxComment"># add to ESP</span> -<span id="L421" class="LineNr">421 </span> <span class="subxS1Comment"># . clear-stream(_test-error-stream)</span> -<span id="L422" class="LineNr">422 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L423" class="LineNr">423 </span> 68/push _test-error-stream/imm32 -<span id="L424" class="LineNr">424 </span> <span class="subxS2Comment"># . . call</span> -<span id="L425" class="LineNr">425 </span> e8/call clear-stream/disp32 -<span id="L426" class="LineNr">426 </span> <span class="subxS2Comment"># . . discard args</span> -<span id="L427" class="LineNr">427 </span> 81 0/subop/add 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 4/imm32 <span class="subxComment"># add to ESP</span> -<span id="L428" class="LineNr">428 </span> <span class="subxComment"># initialize 'in'</span> -<span id="L429" class="LineNr">429 </span> <span class="subxS1Comment"># . write(_test-stream, "3")</span> -<span id="L430" class="LineNr">430 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L431" class="LineNr">431 </span> 68/push <span class="Constant">"3"</span>/imm32 -<span id="L432" class="LineNr">432 </span> 68/push _test-stream/imm32 -<span id="L433" class="LineNr">433 </span> <span class="subxS2Comment"># . . call</span> -<span id="L434" class="LineNr">434 </span> e8/call write/disp32 -<span id="L435" class="LineNr">435 </span> <span class="subxS2Comment"># . . discard args</span> -<span id="L436" class="LineNr">436 </span> 81 0/subop/add 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 8/imm32 <span class="subxComment"># add to ESP</span> -<span id="L437" class="LineNr">437 </span> <span class="subxComment"># initialize exit-descriptor 'ed' for the call to 'get-num' below</span> -<span id="L438" class="LineNr">438 </span> <span class="subxS1Comment"># . var ed/EAX : (address exit-descriptor)</span> -<span id="L439" class="LineNr">439 </span> 81 5/subop/subtract 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 8/imm32 <span class="subxComment"># subtract from ESP</span> -<span id="L440" class="LineNr">440 </span> 8d/copy-address 0/mod/indirect 4/rm32/sib 4/base/ESP 4/index/none <span class="CommentedCode"> . </span> 0/r32/EAX <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="subxComment"># copy ESP to EAX</span> -<span id="L441" class="LineNr">441 </span> <span class="subxS1Comment"># . tailor-exit-descriptor(ed, 16)</span> -<span id="L442" class="LineNr">442 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L443" class="LineNr">443 </span> 68/push 0x10/imm32/nbytes-of-args-for-get-num -<span id="L444" class="LineNr">444 </span> 50/push-EAX/ed -<span id="L445" class="LineNr">445 </span> <span class="subxS2Comment"># . . call</span> -<span id="L446" class="LineNr">446 </span> e8/call tailor-exit-descriptor/disp32 -<span id="L447" class="LineNr">447 </span> <span class="subxS2Comment"># . . discard args</span> -<span id="L448" class="LineNr">448 </span> 81 0/subop/add 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 8/imm32 <span class="subxComment"># add to ESP</span> -<span id="L449" class="LineNr">449 </span> <span class="subxComment"># *don't* prime the pump</span> -<span id="L450" class="LineNr">450 </span> <span class="subxComment"># get-num(in, out, err, ed)</span> -<span id="L451" class="LineNr">451 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L452" class="LineNr">452 </span> 50/push-EAX/ed -<span id="L453" class="LineNr">453 </span> 68/push _test-error-stream/imm32 -<span id="L454" class="LineNr">454 </span> 68/push _test-output-stream/imm32 -<span id="L455" class="LineNr">455 </span> 68/push _test-buffered-file/imm32 -<span id="L456" class="LineNr">456 </span> <span class="subxS2Comment"># . . call</span> -<span id="L457" class="LineNr">457 </span> e8/call get-num/disp32 -<span id="L458" class="LineNr">458 </span> <span class="subxComment"># registers except ESP may be clobbered at this point</span> -<span id="L459" class="LineNr">459 </span> <span class="subxS2Comment"># . . discard args</span> -<span id="L460" class="LineNr">460 </span> 81 0/subop/add 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 0x10/imm32 <span class="subxComment"># add to ESP</span> -<span id="L461" class="LineNr">461 </span> <span class="subxComment"># check that get-num tried to call exit(1)</span> -<span id="L462" class="LineNr">462 </span> <span class="subxS1Comment"># . check-ints-equal(ed->value, 2, msg) # i.e. stop was called with value 1</span> -<span id="L463" class="LineNr">463 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L464" class="LineNr">464 </span> 68/push <span class="Constant">"F - test-get-num-aborts-on-non-digit-in-Look"</span>/imm32 -<span id="L465" class="LineNr">465 </span> 68/push 2/imm32 -<span id="L466" class="LineNr">466 </span> <span class="subxS2Comment"># . . push ed->value</span> -<span id="L467" class="LineNr">467 </span> ff 6/subop/push 1/mod/*+disp8 0/rm32/EAX <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 4/disp8 <span class="CommentedCode"> . </span> <span class="subxComment"># push *(EAX+4)</span> -<span id="L468" class="LineNr">468 </span> <span class="subxS2Comment"># . . call</span> -<span id="L469" class="LineNr">469 </span> e8/call check-ints-equal/disp32 -<span id="L470" class="LineNr">470 </span> <span class="subxS2Comment"># . . discard args</span> -<span id="L471" class="LineNr">471 </span> 81 0/subop/add 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 0xc/imm32 <span class="subxComment"># add to ESP</span> -<span id="L472" class="LineNr">472 </span> <span class="subxS1Comment"># . reclaim locals</span> -<span id="L473" class="LineNr">473 </span> 81 0/subop/add 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 8/imm32 <span class="subxComment"># add to ESP</span> -<span id="L474" class="LineNr">474 </span> 5d/pop-to-EBP -<span id="L475" class="LineNr">475 </span> c3/return -<span id="L476" class="LineNr">476 </span> -<span id="L477" class="LineNr">477 </span><span class="subxComment">## helpers</span> -<span id="L478" class="LineNr">478 </span> -<span id="L479" class="LineNr">479 </span><span class="subxComment"># write(f, "Error: "+s+" expected\n") then stop(ed, 1)</span> -<span id="L480" class="LineNr">480 </span><span class="subxFunction">expected</span>: <span class="subxComment"># ed : (address exit-descriptor), f : fd or (address stream), s : (address array byte) -> <void></span> -<span id="L481" class="LineNr">481 </span> <span class="subxS1Comment"># . prolog</span> -<span id="L482" class="LineNr">482 </span> 55/push-EBP -<span id="L483" class="LineNr">483 </span> 89/copy 3/mod/direct 5/rm32/EBP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 4/r32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="subxComment"># copy ESP to EBP</span> -<span id="L484" class="LineNr">484 </span> <span class="subxComment"># write(f, "Error: ")</span> -<span id="L485" class="LineNr">485 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L486" class="LineNr">486 </span> 68/push <span class="Constant">"Error: "</span>/imm32 -<span id="L487" class="LineNr">487 </span> ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 0xc/disp8 <span class="CommentedCode"> . </span> <span class="subxComment"># push *(EBP+12)</span> -<span id="L488" class="LineNr">488 </span> <span class="subxS2Comment"># . . call</span> -<span id="L489" class="LineNr">489 </span> e8/call write/disp32 -<span id="L490" class="LineNr">490 </span> <span class="subxS2Comment"># . . discard args</span> -<span id="L491" class="LineNr">491 </span> 81 0/subop/add 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 8/imm32 <span class="subxComment"># add to ESP</span> -<span id="L492" class="LineNr">492 </span> <span class="subxComment"># write(f, s)</span> -<span id="L493" class="LineNr">493 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L494" class="LineNr">494 </span> ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 0x10/disp8 <span class="CommentedCode"> . </span> <span class="subxComment"># push *(EBP+16)</span> -<span id="L495" class="LineNr">495 </span> ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 0xc/disp8 <span class="CommentedCode"> . </span> <span class="subxComment"># push *(EBP+12)</span> -<span id="L496" class="LineNr">496 </span> <span class="subxS2Comment"># . . call</span> -<span id="L497" class="LineNr">497 </span> e8/call write/disp32 -<span id="L498" class="LineNr">498 </span> <span class="subxS2Comment"># . . discard args</span> -<span id="L499" class="LineNr">499 </span> 81 0/subop/add 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 8/imm32 <span class="subxComment"># add to ESP</span> -<span id="L500" class="LineNr">500 </span> <span class="subxComment"># write(f, " expected")</span> -<span id="L501" class="LineNr">501 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L502" class="LineNr">502 </span> 68/push <span class="Constant">" expected"</span>/imm32 -<span id="L503" class="LineNr">503 </span> ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 0xc/disp8 <span class="CommentedCode"> . </span> <span class="subxComment"># push *(EBP+12)</span> -<span id="L504" class="LineNr">504 </span> <span class="subxS2Comment"># . . call</span> -<span id="L505" class="LineNr">505 </span> e8/call write/disp32 -<span id="L506" class="LineNr">506 </span> <span class="subxS2Comment"># . . discard args</span> -<span id="L507" class="LineNr">507 </span> 81 0/subop/add 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 8/imm32 <span class="subxComment"># add to ESP</span> -<span id="L508" class="LineNr">508 </span> <span class="subxComment"># write(f, Newline)</span> -<span id="L509" class="LineNr">509 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L510" class="LineNr">510 </span> 68/push <span class="SpecialChar">Newline</span>/imm32 -<span id="L511" class="LineNr">511 </span> ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 0xc/disp8 <span class="CommentedCode"> . </span> <span class="subxComment"># push *(EBP+12)</span> -<span id="L512" class="LineNr">512 </span> <span class="subxS2Comment"># . . call</span> -<span id="L513" class="LineNr">513 </span> e8/call write/disp32 -<span id="L514" class="LineNr">514 </span> <span class="subxS2Comment"># . . discard args</span> -<span id="L515" class="LineNr">515 </span> 81 0/subop/add 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 8/imm32 <span class="subxComment"># add to ESP</span> -<span id="L516" class="LineNr">516 </span> <span class="subxComment"># stop(ed, 1)</span> -<span id="L517" class="LineNr">517 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L518" class="LineNr">518 </span> 68/push 1/imm32 -<span id="L519" class="LineNr">519 </span> ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 8/disp8 <span class="CommentedCode"> . </span> <span class="subxComment"># push *(EBP+8)</span> -<span id="L520" class="LineNr">520 </span> <span class="subxS2Comment"># . . call</span> -<span id="L521" class="LineNr">521 </span> e8/call stop/disp32 -<span id="L522" class="LineNr">522 </span> <span class="subxComment"># should never get past this point</span> -<span id="L523" class="LineNr">523 </span> <span class="subxS1Comment"># . epilog</span> -<span id="L524" class="LineNr">524 </span> 89/copy 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 5/r32/EBP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="subxComment"># copy EBP to ESP</span> -<span id="L525" class="LineNr">525 </span> 5d/pop-to-EBP -<span id="L526" class="LineNr">526 </span> c3/return -<span id="L527" class="LineNr">527 </span> -<span id="L528" class="LineNr">528 </span><span class="subxComment"># write(f, "Error: "+s+"\n") then stop(ed, 1)</span> -<span id="L529" class="LineNr">529 </span><span class="subxFunction">error</span>: <span class="subxComment"># ed : (address exit-descriptor), f : fd or (address stream), s : (address array byte) -> <void></span> -<span id="L530" class="LineNr">530 </span> <span class="subxS1Comment"># . prolog</span> -<span id="L531" class="LineNr">531 </span> 55/push-EBP -<span id="L532" class="LineNr">532 </span> 89/copy 3/mod/direct 5/rm32/EBP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 4/r32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="subxComment"># copy ESP to EBP</span> -<span id="L533" class="LineNr">533 </span> <span class="subxComment"># write(f, "Error: ")</span> -<span id="L534" class="LineNr">534 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L535" class="LineNr">535 </span> 68/push <span class="Constant">"Error: "</span>/imm32 -<span id="L536" class="LineNr">536 </span> ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 0xc/disp8 <span class="CommentedCode"> . </span> <span class="subxComment"># push *(EBP+12)</span> -<span id="L537" class="LineNr">537 </span> <span class="subxS2Comment"># . . call</span> -<span id="L538" class="LineNr">538 </span> e8/call write/disp32 -<span id="L539" class="LineNr">539 </span> <span class="subxS2Comment"># . . discard args</span> -<span id="L540" class="LineNr">540 </span> 81 0/subop/add 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 8/imm32 <span class="subxComment"># add to ESP</span> -<span id="L541" class="LineNr">541 </span> <span class="subxComment"># write(f, s)</span> -<span id="L542" class="LineNr">542 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L543" class="LineNr">543 </span> ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 0x10/disp8 <span class="CommentedCode"> . </span> <span class="subxComment"># push *(EBP+16)</span> -<span id="L544" class="LineNr">544 </span> ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 0xc/disp8 <span class="CommentedCode"> . </span> <span class="subxComment"># push *(EBP+12)</span> -<span id="L545" class="LineNr">545 </span> <span class="subxS2Comment"># . . call</span> -<span id="L546" class="LineNr">546 </span> e8/call write/disp32 -<span id="L547" class="LineNr">547 </span> <span class="subxS2Comment"># . . discard args</span> -<span id="L548" class="LineNr">548 </span> 81 0/subop/add 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 8/imm32 <span class="subxComment"># add to ESP</span> -<span id="L549" class="LineNr">549 </span> <span class="subxComment"># write(f, Newline)</span> -<span id="L550" class="LineNr">550 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L551" class="LineNr">551 </span> 68/push <span class="SpecialChar">Newline</span>/imm32 -<span id="L552" class="LineNr">552 </span> ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 0xc/disp8 <span class="CommentedCode"> . </span> <span class="subxComment"># push *(EBP+12)</span> -<span id="L553" class="LineNr">553 </span> <span class="subxS2Comment"># . . call</span> -<span id="L554" class="LineNr">554 </span> e8/call write/disp32 -<span id="L555" class="LineNr">555 </span> <span class="subxS2Comment"># . . discard args</span> -<span id="L556" class="LineNr">556 </span> 81 0/subop/add 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 8/imm32 <span class="subxComment"># add to ESP</span> -<span id="L557" class="LineNr">557 </span> <span class="subxComment"># stop(ed, 1)</span> -<span id="L558" class="LineNr">558 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L559" class="LineNr">559 </span> 68/push 1/imm32 -<span id="L560" class="LineNr">560 </span> ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 8/disp8 <span class="CommentedCode"> . </span> <span class="subxComment"># push *(EBP+8)</span> -<span id="L561" class="LineNr">561 </span> <span class="subxS2Comment"># . . call</span> -<span id="L562" class="LineNr">562 </span> e8/call stop/disp32 -<span id="L563" class="LineNr">563 </span> <span class="subxComment"># should never get past this point</span> -<span id="L564" class="LineNr">564 </span> <span class="subxS1Comment"># . epilog</span> -<span id="L565" class="LineNr">565 </span> 89/copy 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 5/r32/EBP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="subxComment"># copy EBP to ESP</span> -<span id="L566" class="LineNr">566 </span> 5d/pop-to-EBP -<span id="L567" class="LineNr">567 </span> c3/return -<span id="L568" class="LineNr">568 </span> -<span id="L569" class="LineNr">569 </span><span class="subxComment"># read a byte from 'f', and save it in 'Look'</span> -<span id="L570" class="LineNr">570 </span><span class="subxFunction">get-char</span>: <span class="subxComment"># f : (address buffered-file) -> <void></span> -<span id="L571" class="LineNr">571 </span> <span class="subxS1Comment"># . prolog</span> -<span id="L572" class="LineNr">572 </span> 55/push-EBP -<span id="L573" class="LineNr">573 </span> 89/copy 3/mod/direct 5/rm32/EBP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 4/r32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="subxComment"># copy ESP to EBP</span> -<span id="L574" class="LineNr">574 </span> <span class="subxS1Comment"># . save registers</span> -<span id="L575" class="LineNr">575 </span> 50/push-EAX -<span id="L576" class="LineNr">576 </span> <span class="subxComment"># read-byte(f)</span> -<span id="L577" class="LineNr">577 </span> <span class="subxS2Comment"># . . push args</span> -<span id="L578" class="LineNr">578 </span> ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 0x8/disp8 <span class="CommentedCode"> . </span> <span class="subxComment"># push *(EBP+8)</span> -<span id="L579" class="LineNr">579 </span> <span class="subxS2Comment"># . . call</span> -<span id="L580" class="LineNr">580 </span> e8/call read-byte/disp32 -<span id="L581" class="LineNr">581 </span> <span class="subxS2Comment"># . . discard args</span> -<span id="L582" class="LineNr">582 </span> 81 0/subop/add 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 4/imm32 <span class="subxComment"># add to ESP</span> -<span id="L583" class="LineNr">583 </span> <span class="subxComment"># save EAX to Look</span> -<span id="L584" class="LineNr">584 </span> 89/copy 0/mod/indirect 5/rm32/.disp32 <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 0/r32/EAX <span class="SpecialChar">Look</span>/disp32 <span class="CommentedCode"> . </span> <span class="subxComment"># copy EAX to *Look</span> -<span id="L585" class="LineNr">585 </span> <span class="subxS1Comment"># . restore registers</span> -<span id="L586" class="LineNr">586 </span> 58/pop-to-EAX -<span id="L587" class="LineNr">587 </span> <span class="subxS1Comment"># . epilog</span> -<span id="L588" class="LineNr">588 </span> 89/copy 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 5/r32/EBP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="subxComment"># copy EBP to ESP</span> -<span id="L589" class="LineNr">589 </span> 5d/pop-to-EBP -<span id="L590" class="LineNr">590 </span> c3/return -<span id="L591" class="LineNr">591 </span> -<span id="L592" class="LineNr">592 </span>is-digit?: <span class="subxComment"># c : int -> bool/EAX</span> -<span id="L593" class="LineNr">593 </span> <span class="subxS1Comment"># . prolog</span> -<span id="L594" class="LineNr">594 </span> 55/push-EBP -<span id="L595" class="LineNr">595 </span> 89/copy 3/mod/direct 5/rm32/EBP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 4/r32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="subxComment"># copy ESP to EBP</span> -<span id="L596" class="LineNr">596 </span> <span class="subxComment"># EAX = false</span> -<span id="L597" class="LineNr">597 </span> b8/copy-to-EAX 0/imm32 -<span id="L598" class="LineNr">598 </span> <span class="subxComment"># if c < '0' return false</span> -<span id="L599" class="LineNr">599 </span> 81 7/subop/compare 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 0x8/disp8 0x30/imm32 <span class="subxComment"># compare *(EBP+8)</span> -<span id="L600" class="LineNr">600 </span> 7c/jump-if-lesser $is-digit?:end/disp8 -<span id="L601" class="LineNr">601 </span> <span class="subxComment"># if c > '9' return false</span> -<span id="L602" class="LineNr">602 </span> 81 7/subop/compare 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 0x8/disp8 0x39/imm32 <span class="subxComment"># compare *(EBP+8)</span> -<span id="L603" class="LineNr">603 </span> 7f/jump-if-greater $is-digit?:end/disp8 -<span id="L604" class="LineNr">604 </span> <span class="subxComment"># otherwise return true</span> -<span id="L605" class="LineNr">605 </span> b8/copy-to-EAX 1/imm32 -<span id="L606" class="LineNr">606 </span>$is-digit?:end: -<span id="L607" class="LineNr">607 </span> <span class="subxS1Comment"># . epilog</span> -<span id="L608" class="LineNr">608 </span> 89/copy 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 5/r32/EBP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="subxComment"># copy EBP to ESP</span> -<span id="L609" class="LineNr">609 </span> 5d/pop-to-EBP -<span id="L610" class="LineNr">610 </span> c3/return -<span id="L611" class="LineNr">611 </span> -<span id="L612" class="LineNr">612 </span>== data -<span id="L613" class="LineNr">613 </span> -<span id="L614" class="LineNr">614 </span><span class="SpecialChar">Look</span>: <span class="subxComment"># (char)</span> -<span id="L615" class="LineNr">615 </span> 00 00 00 00 <span class="subxComment"># = 0</span> -<span id="L616" class="LineNr">616 </span> -<span id="L617" class="LineNr">617 </span><span class="subxMinorFunction">_test-output-stream</span>: -<span id="L618" class="LineNr">618 </span> <span class="subxComment"># current write index</span> -<span id="L619" class="LineNr">619 </span> 00 00 00 00 -<span id="L620" class="LineNr">620 </span> <span class="subxComment"># current read index</span> -<span id="L621" class="LineNr">621 </span> 00 00 00 00 -<span id="L622" class="LineNr">622 </span> <span class="subxComment"># length (= 8)</span> -<span id="L623" class="LineNr">623 </span> 08 00 00 00 -<span id="L624" class="LineNr">624 </span> <span class="subxComment"># data</span> -<span id="L625" class="LineNr">625 </span> 00 00 00 00 00 00 00 00 <span class="subxComment"># 8 bytes</span> -<span id="L626" class="LineNr">626 </span> -<span id="L627" class="LineNr">627 </span><span class="subxMinorFunction">_test-error-stream</span>: -<span id="L628" class="LineNr">628 </span> <span class="subxComment"># current write index</span> -<span id="L629" class="LineNr">629 </span> 00 00 00 00 -<span id="L630" class="LineNr">630 </span> <span class="subxComment"># current read index</span> -<span id="L631" class="LineNr">631 </span> 00 00 00 00 -<span id="L632" class="LineNr">632 </span> <span class="subxComment"># length (= 8)</span> -<span id="L633" class="LineNr">633 </span> 08 00 00 00 -<span id="L634" class="LineNr">634 </span> <span class="subxComment"># data</span> -<span id="L635" class="LineNr">635 </span> 00 00 00 00 00 00 00 00 <span class="subxComment"># 8 bytes</span> -<span id="L636" class="LineNr">636 </span> -<span id="L637" class="LineNr">637 </span><span class="subxS2Comment"># . . vim:nowrap:textwidth=0</span> +<span id="L91" class="LineNr"> 91 </span> <span class="subxComment"># prime the pump</span> +<span id="L92" class="LineNr"> 92 </span> <span class="subxS1Comment"># . Look = get-char(in)</span> +<span id="L93" class="LineNr"> 93 </span> <span class="subxS2Comment"># . . push args</span> +<span id="L94" class="LineNr"> 94 </span> ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 8/disp8 <span class="CommentedCode"> . </span> <span class="subxComment"># push *(EBP+8)</span> +<span id="L95" class="LineNr"> 95 </span> <span class="subxS2Comment"># . . call</span> +<span id="L96" class="LineNr"> 96 </span> e8/call get-char/disp32 +<span id="L97" class="LineNr"> 97 </span> <span class="subxS2Comment"># . . discard args</span> +<span id="L98" class="LineNr"> 98 </span> 81 0/subop/add 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 4/imm32 <span class="subxComment"># add to ESP</span> +<span id="L99" class="LineNr"> 99 </span> <span class="subxComment"># var num/ECX : (address stream) on the stack</span> +<span id="L100" class="LineNr">100 </span> <span class="subxComment"># Numbers can be 32 bits or 8 hex bytes long. One of them will be in 'Look', so we need space for 7 bytes.</span> +<span id="L101" class="LineNr">101 </span> <span class="subxComment"># Sizing the stream just right buys us overflow-handling for free inside 'get-num'.</span> +<span id="L102" class="LineNr">102 </span> <span class="subxComment"># Add 12 bytes for 'read', 'write' and 'length' fields, for a total of 19 bytes, or 0x13 in hex.</span> +<span id="L103" class="LineNr">103 </span> <span class="subxComment"># The stack pointer is no longer aligned, so dump_stack() can be misleading past this point.</span> +<span id="L104" class="LineNr">104 </span> 81 5/subop/subtract 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 0x13/imm32 <span class="subxComment"># subtract from ESP</span> +<span id="L105" class="LineNr">105 </span> 8d/copy-address 0/mod/indirect 4/rm32/sib 4/base/ESP 4/index/none <span class="CommentedCode"> . </span> 1/r32/ECX <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="subxComment"># copy ESP to ECX</span> +<span id="L106" class="LineNr">106 </span> <span class="subxComment"># initialize the stream</span> +<span id="L107" class="LineNr">107 </span> <span class="subxS1Comment"># . num->length = 7</span> +<span id="L108" class="LineNr">108 </span> c7/copy 1/mod/*+disp8 1/rm32/ECX <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 8/disp8 7/imm32 <span class="subxComment"># copy to *(ECX+8)</span> +<span id="L109" class="LineNr">109 </span> <span class="subxS1Comment"># . clear-stream(num)</span> +<span id="L110" class="LineNr">110 </span> <span class="subxS2Comment"># . . push args</span> +<span id="L111" class="LineNr">111 </span> 51/push-ECX +<span id="L112" class="LineNr">112 </span> <span class="subxS2Comment"># . . call</span> +<span id="L113" class="LineNr">113 </span> e8/call clear-stream/disp32 +<span id="L114" class="LineNr">114 </span> <span class="subxS2Comment"># . . discard args</span> +<span id="L115" class="LineNr">115 </span> 81 0/subop/add 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 4/imm32 <span class="subxComment"># add to ESP</span> +<span id="L116" class="LineNr">116 </span> <span class="subxComment"># read a digit from 'in' into 'num'</span> +<span id="L117" class="LineNr">117 </span> <span class="subxS1Comment"># . get-num(in, num, err, ed)</span> +<span id="L118" class="LineNr">118 </span> <span class="subxS2Comment"># . . push args</span> +<span id="L119" class="LineNr">119 </span> ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 0x14/disp8 <span class="CommentedCode"> . </span> <span class="subxComment"># push *(EBP+20)</span> +<span id="L120" class="LineNr">120 </span> ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 0x10/disp8 <span class="CommentedCode"> . </span> <span class="subxComment"># push *(EBP+16)</span> +<span id="L121" class="LineNr">121 </span> 51/push-ECX/num +<span id="L122" class="LineNr">122 </span> ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 8/disp8 <span class="CommentedCode"> . </span> <span class="subxComment"># push *(EBP+8)</span> +<span id="L123" class="LineNr">123 </span> <span class="subxS2Comment"># . . call</span> +<span id="L124" class="LineNr">124 </span> e8/call get-num/disp32 +<span id="L125" class="LineNr">125 </span> <span class="subxS2Comment"># . . discard args</span> +<span id="L126" class="LineNr">126 </span> 81 0/subop/add 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 0x10/imm32 <span class="subxComment"># add to ESP</span> +<span id="L127" class="LineNr">127 </span> <span class="subxComment"># render 'num' into the following template on 'out':</span> +<span id="L128" class="LineNr">128 </span> <span class="subxComment"># bb/copy-to-EBX _num_</span> +<span id="L129" class="LineNr">129 </span> <span class="subxComment"># b8/copy-to-EAX 1/imm32/exit</span> +<span id="L130" class="LineNr">130 </span> <span class="subxComment"># cd/syscall 0x80/imm8</span> +<span id="L131" class="LineNr">131 </span> <span class="subxComment">#</span> +<span id="L132" class="LineNr">132 </span> <span class="subxS1Comment"># . EAX = write(out, "bb/copy-to-EBX ")</span> +<span id="L133" class="LineNr">133 </span> <span class="subxS2Comment"># . . push args</span> +<span id="L134" class="LineNr">134 </span> 68/push <span class="Constant">"bb/copy-to-EBX "</span>/imm32 +<span id="L135" class="LineNr">135 </span> ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 0xc/disp8 <span class="CommentedCode"> . </span> <span class="subxComment"># push *(EBP+12)</span> +<span id="L136" class="LineNr">136 </span> <span class="subxS2Comment"># . . call</span> +<span id="L137" class="LineNr">137 </span> e8/call write/disp32 +<span id="L138" class="LineNr">138 </span> <span class="subxS2Comment"># . . discard args</span> +<span id="L139" class="LineNr">139 </span> 81 0/subop/add 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 8/imm32 <span class="subxComment"># add to ESP</span> +<span id="L140" class="LineNr">140 </span> <span class="subxS1Comment"># . write-stream(out, num)</span> +<span id="L141" class="LineNr">141 </span> <span class="subxS2Comment"># . . push args</span> +<span id="L142" class="LineNr">142 </span> 51/push-ECX/num +<span id="L143" class="LineNr">143 </span> ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 0xc/disp8 <span class="CommentedCode"> . </span> <span class="subxComment"># push *(EBP+12)</span> +<span id="L144" class="LineNr">144 </span> <span class="subxS2Comment"># . . call</span> +<span id="L145" class="LineNr">145 </span> e8/call write-stream/disp32 +<span id="L146" class="LineNr">146 </span> <span class="subxS2Comment"># . . discard args</span> +<span id="L147" class="LineNr">147 </span> 81 0/subop/add 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 8/imm32 <span class="subxComment"># add to ESP</span> +<span id="L148" class="LineNr">148 </span> <span class="subxS1Comment"># . write(out, Newline)</span> +<span id="L149" class="LineNr">149 </span> <span class="subxS2Comment"># . . push args</span> +<span id="L150" class="LineNr">150 </span> 68/push <span class="SpecialChar">Newline</span>/imm32 +<span id="L151" class="LineNr">151 </span> ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 0xc/disp8 <span class="CommentedCode"> . </span> <span class="subxComment"># push *(EBP+12)</span> +<span id="L152" class="LineNr">152 </span> <span class="subxS2Comment"># . . call</span> +<span id="L153" class="LineNr">153 </span> e8/call write/disp32 +<span id="L154" class="LineNr">154 </span> <span class="subxS2Comment"># . . discard args</span> +<span id="L155" class="LineNr">155 </span> 81 0/subop/add 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 8/imm32 <span class="subxComment"># add to ESP</span> +<span id="L156" class="LineNr">156 </span> <span class="subxS1Comment"># . write(out, "b8/copy-to-EAX 1/imm32/exit")</span> +<span id="L157" class="LineNr">157 </span> <span class="subxS2Comment"># . . push args</span> +<span id="L158" class="LineNr">158 </span> 68/push <span class="Constant">"b8/copy-to-EAX 1/imm32/exit"</span>/imm32 +<span id="L159" class="LineNr">159 </span> ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 0xc/disp8 <span class="CommentedCode"> . </span> <span class="subxComment"># push *(EBP+12)</span> +<span id="L160" class="LineNr">160 </span> <span class="subxS2Comment"># . . call</span> +<span id="L161" class="LineNr">161 </span> e8/call write/disp32 +<span id="L162" class="LineNr">162 </span> <span class="subxS2Comment"># . . discard args</span> +<span id="L163" class="LineNr">163 </span> 81 0/subop/add 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 8/imm32 <span class="subxComment"># add to ESP</span> +<span id="L164" class="LineNr">164 </span> <span class="subxS1Comment"># . write(out, Newline)</span> +<span id="L165" class="LineNr">165 </span> <span class="subxS2Comment"># . . push args</span> +<span id="L166" class="LineNr">166 </span> 68/push <span class="SpecialChar">Newline</span>/imm32 +<span id="L167" class="LineNr">167 </span> ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 0xc/disp8 <span class="CommentedCode"> . </span> <span class="subxComment"># push *(EBP+12)</span> +<span id="L168" class="LineNr">168 </span> <span class="subxS2Comment"># . . call</span> +<span id="L169" class="LineNr">169 </span> e8/call write/disp32 +<span id="L170" class="LineNr">170 </span> <span class="subxS2Comment"># . . discard args</span> +<span id="L171" class="LineNr">171 </span> 81 0/subop/add 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 8/imm32 <span class="subxComment"># add to ESP</span> +<span id="L172" class="LineNr">172 </span> <span class="subxS1Comment"># . write(out, "cd/syscall 0x80/imm8")</span> +<span id="L173" class="LineNr">173 </span> <span class="subxS2Comment"># . . push args</span> +<span id="L174" class="LineNr">174 </span> 68/push <span class="Constant">"cd/syscall 0x80/imm8"</span>/imm32 +<span id="L175" class="LineNr">175 </span> ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 0xc/disp8 <span class="CommentedCode"> . </span> <span class="subxComment"># push *(EBP+12)</span> +<span id="L176" class="LineNr">176 </span> <span class="subxS2Comment"># . . call</span> +<span id="L177" class="LineNr">177 </span> e8/call write/disp32 +<span id="L178" class="LineNr">178 </span> <span class="subxS2Comment"># . . discard args</span> +<span id="L179" class="LineNr">179 </span> 81 0/subop/add 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 8/imm32 <span class="subxComment"># add to ESP</span> +<span id="L180" class="LineNr">180 </span> <span class="subxS1Comment"># . write(out, Newline)</span> +<span id="L181" class="LineNr">181 </span> <span class="subxS2Comment"># . . push args</span> +<span id="L182" class="LineNr">182 </span> 68/push <span class="SpecialChar">Newline</span>/imm32 +<span id="L183" class="LineNr">183 </span> ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 0xc/disp8 <span class="CommentedCode"> . </span> <span class="subxComment"># push *(EBP+12)</span> +<span id="L184" class="LineNr">184 </span> <span class="subxS2Comment"># . . call</span> +<span id="L185" class="LineNr">185 </span> e8/call write/disp32 +<span id="L186" class="LineNr">186 </span> <span class="subxS2Comment"># . . discard args</span> +<span id="L187" class="LineNr">187 </span> 81 0/subop/add 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 8/imm32 <span class="subxComment"># add to ESP</span> +<span id="L188" class="LineNr">188 </span> <span class="subxS1Comment"># . restore registers</span> +<span id="L189" class="LineNr">189 </span> 59/pop-to-ECX +<span id="L190" class="LineNr">190 </span> 58/pop-to-EAX +<span id="L191" class="LineNr">191 </span> <span class="subxS1Comment"># . epilog</span> +<span id="L192" class="LineNr">192 </span> 89/copy 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 5/r32/EBP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="subxComment"># copy EBP to ESP</span> +<span id="L193" class="LineNr">193 </span> 5d/pop-to-EBP +<span id="L194" class="LineNr">194 </span> c3/return +<span id="L195" class="LineNr">195 </span> +<span id="L196" class="LineNr">196 </span><span class="subxComment"># Read a single digit into 'out'. Abort if there are none, or if there is no space in 'out'.</span> +<span id="L197" class="LineNr">197 </span><span class="subxComment"># Input comes from the global variable 'Look', and we leave the next byte from</span> +<span id="L198" class="LineNr">198 </span><span class="subxComment"># 'in' into it on exit.</span> +<span id="L199" class="LineNr">199 </span><span class="subxFunction">get-num</span>: <span class="subxComment"># in : (address buffered-file), out : (address stream), err : fd or (address stream), ed : (address exit-descriptor) -> <void></span> +<span id="L200" class="LineNr">200 </span> <span class="subxComment"># pseudocode:</span> +<span id="L201" class="LineNr">201 </span> <span class="subxComment"># if !is-digit?(Look) expected(ed, err, "integer")</span> +<span id="L202" class="LineNr">202 </span> <span class="subxComment"># if out->write >= out->length</span> +<span id="L203" class="LineNr">203 </span> <span class="subxComment"># write(err, "Error: too many digits in number\n")</span> +<span id="L204" class="LineNr">204 </span> <span class="subxComment"># stop(ed, 1)</span> +<span id="L205" class="LineNr">205 </span> <span class="subxComment"># out->data[out->write] = LSB(Look)</span> +<span id="L206" class="LineNr">206 </span> <span class="subxComment"># ++out->write</span> +<span id="L207" class="LineNr">207 </span> <span class="subxComment"># Look = get-char(in)</span> +<span id="L208" class="LineNr">208 </span> <span class="subxComment">#</span> +<span id="L209" class="LineNr">209 </span> <span class="subxComment"># registers:</span> +<span id="L210" class="LineNr">210 </span> <span class="subxComment"># ESI : in</span> +<span id="L211" class="LineNr">211 </span> <span class="subxComment"># EDI : out</span> +<span id="L212" class="LineNr">212 </span> <span class="subxComment"># EAX : temp</span> +<span id="L213" class="LineNr">213 </span> <span class="subxComment"># ECX : out->write</span> +<span id="L214" class="LineNr">214 </span> <span class="subxComment"># EDX : out->length</span> +<span id="L215" class="LineNr">215 </span> <span class="subxComment"># EBX : temp2</span> +<span id="L216" class="LineNr">216 </span> <span class="subxComment"># We can't allocate Look to a register because it gets written implicitly in</span> +<span id="L217" class="LineNr">217 </span> <span class="subxComment"># get-char in each iteration of the loop. (Thereby demonstrating that it's</span> +<span id="L218" class="LineNr">218 </span> <span class="subxComment"># not the right interface for us. But we'll keep it just to follow Crenshaw.)</span> +<span id="L219" class="LineNr">219 </span> <span class="subxComment">#</span> +<span id="L220" class="LineNr">220 </span> <span class="subxS1Comment"># . prolog</span> +<span id="L221" class="LineNr">221 </span> 55/push-EBP +<span id="L222" class="LineNr">222 </span> 89/copy 3/mod/direct 5/rm32/EBP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 4/r32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="subxComment"># copy ESP to EBP</span> +<span id="L223" class="LineNr">223 </span> <span class="subxH1Comment"># - if is-digit?(Look) expected(ed, err, "integer")</span> +<span id="L224" class="LineNr">224 </span> <span class="subxS1Comment"># . EAX = is-digit?(Look)</span> +<span id="L225" class="LineNr">225 </span> <span class="subxS2Comment"># . . push args</span> +<span id="L226" class="LineNr">226 </span> ff 6/subop/push 0/mod/indirect 5/rm32/.disp32 <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="SpecialChar">Look</span>/disp32 <span class="CommentedCode"> . </span> <span class="subxComment"># push *Look</span> +<span id="L227" class="LineNr">227 </span> <span class="subxS2Comment"># . . call</span> +<span id="L228" class="LineNr">228 </span> e8/call is-digit?/disp32 +<span id="L229" class="LineNr">229 </span> <span class="subxS2Comment"># . . discard args</span> +<span id="L230" class="LineNr">230 </span> 81 0/subop/add 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 4/imm32 <span class="subxComment"># add to ESP</span> +<span id="L231" class="LineNr">231 </span> <span class="subxS1Comment"># . if EAX == 0</span> +<span id="L232" class="LineNr">232 </span> 3d/compare-EAX 0/imm32 +<span id="L233" class="LineNr">233 </span> 75/jump-if-not-equal $get-num:main/disp8 +<span id="L234" class="LineNr">234 </span> <span class="subxS1Comment"># . expected(ed, err, "integer")</span> +<span id="L235" class="LineNr">235 </span> <span class="subxS2Comment"># . . push args</span> +<span id="L236" class="LineNr">236 </span> 68/push <span class="Constant">"integer"</span>/imm32 +<span id="L237" class="LineNr">237 </span> ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 0x10/disp8 <span class="CommentedCode"> . </span> <span class="subxComment"># push *(EBP+16)</span> +<span id="L238" class="LineNr">238 </span> ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 0x14/disp8 <span class="CommentedCode"> . </span> <span class="subxComment"># push *(EBP+20)</span> +<span id="L239" class="LineNr">239 </span> <span class="subxS2Comment"># . . call</span> +<span id="L240" class="LineNr">240 </span> e8/call expected/disp32 <span class="subxComment"># never returns</span> +<span id="L241" class="LineNr">241 </span> <span class="subxS2Comment"># . . discard args</span> +<span id="L242" class="LineNr">242 </span> 81 0/subop/add 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 0xc/imm32 <span class="subxComment"># add to ESP</span> +<span id="L243" class="LineNr">243 </span><span class="Constant">$get-num:main</span>: +<span id="L244" class="LineNr">244 </span> <span class="subxH1Comment"># - otherwise read a digit</span> +<span id="L245" class="LineNr">245 </span> <span class="subxS1Comment"># . save registers</span> +<span id="L246" class="LineNr">246 </span> 50/push-EAX +<span id="L247" class="LineNr">247 </span> 51/push-ECX +<span id="L248" class="LineNr">248 </span> 52/push-EDX +<span id="L249" class="LineNr">249 </span> 53/push-EBX +<span id="L250" class="LineNr">250 </span> 56/push-ESI +<span id="L251" class="LineNr">251 </span> 57/push-EDI +<span id="L252" class="LineNr">252 </span> <span class="subxComment"># read necessary variables to registers</span> +<span id="L253" class="LineNr">253 </span> <span class="subxComment"># ESI = in</span> +<span id="L254" class="LineNr">254 </span> 8b/copy 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none <span class="CommentedCode"> . </span> 6/r32/ESI 8/disp8 <span class="CommentedCode"> . </span> <span class="subxComment"># copy *(EBP+8) to ESI</span> +<span id="L255" class="LineNr">255 </span> <span class="subxComment"># EDI = out</span> +<span id="L256" class="LineNr">256 </span> 8b/copy 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none <span class="CommentedCode"> . </span> 7/r32/EDI 0xc/disp8 <span class="CommentedCode"> . </span> <span class="subxComment"># copy *(EBP+12) to EDI</span> +<span id="L257" class="LineNr">257 </span> <span class="subxComment"># ECX = out->write</span> +<span id="L258" class="LineNr">258 </span> 8b/copy 0/mod/indirect 7/rm32/EDI <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 1/r32/ECX <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="subxComment"># copy *EDI to ECX</span> +<span id="L259" class="LineNr">259 </span> <span class="subxComment"># EDX = out->length</span> +<span id="L260" class="LineNr">260 </span> 8b/copy 1/mod/*+disp8 7/rm32/EDI <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 2/r32/EDX 8/disp8 <span class="CommentedCode"> . </span> <span class="subxComment"># copy *(EDI+8) to EDX</span> +<span id="L261" class="LineNr">261 </span> <span class="subxComment"># if out->write >= out->length error</span> +<span id="L262" class="LineNr">262 </span> 3b/compare 3/mod/direct 1/rm32/ECX <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 2/r32/EDX <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="subxComment"># compare EDX with ECX</span> +<span id="L263" class="LineNr">263 </span> 7d/jump-if-lesser $get-num:stage2/disp8 +<span id="L264" class="LineNr">264 </span> <span class="subxS1Comment"># . error(ed, err, msg) # TODO: show full number</span> +<span id="L265" class="LineNr">265 </span> <span class="subxS2Comment"># . . push args</span> +<span id="L266" class="LineNr">266 </span> 68/push <span class="Constant">"get-num: too many digits in number"</span>/imm32 +<span id="L267" class="LineNr">267 </span> ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 0x10/disp8 <span class="CommentedCode"> . </span> <span class="subxComment"># push *(EBP+16)</span> +<span id="L268" class="LineNr">268 </span> ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 0x14/disp8 <span class="CommentedCode"> . </span> <span class="subxComment"># push *(EBP+20)</span> +<span id="L269" class="LineNr">269 </span> <span class="subxS2Comment"># . . call</span> +<span id="L270" class="LineNr">270 </span> e8/call error/disp32 <span class="subxComment"># never returns</span> +<span id="L271" class="LineNr">271 </span> <span class="subxS2Comment"># . . discard args</span> +<span id="L272" class="LineNr">272 </span> 81 0/subop/add 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 0xc/imm32 <span class="subxComment"># add to ESP</span> +<span id="L273" class="LineNr">273 </span><span class="Constant">$get-num:stage2</span>: +<span id="L274" class="LineNr">274 </span> <span class="subxComment"># out->data[out->write] = LSB(Look)</span> +<span id="L275" class="LineNr">275 </span> 8d/copy-address 1/mod/*+disp8 4/rm32/sib 7/base/EDI 1/index/ECX <span class="CommentedCode"> . </span> 3/r32/EBX 0xc/disp8 <span class="CommentedCode"> . </span> <span class="subxComment"># copy EDI+ECX+12 to EBX</span> +<span id="L276" class="LineNr">276 </span> 8b/copy 0/mod/indirect 5/rm32/.disp32 <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 0/r32/EAX <span class="SpecialChar">Look</span>/disp32 <span class="CommentedCode"> . </span> <span class="subxComment"># copy *Look to EAX</span> +<span id="L277" class="LineNr">277 </span> 88/copy-byte 0/mod/indirect 3/rm32/EBX <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 0/r32/AL <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="subxComment"># copy byte at AL to *EBX</span> +<span id="L278" class="LineNr">278 </span> <span class="subxComment"># ++out->write</span> +<span id="L279" class="LineNr">279 </span> 41/increment-ECX +<span id="L280" class="LineNr">280 </span> <span class="subxComment"># Look = get-char(in)</span> +<span id="L281" class="LineNr">281 </span> <span class="subxS2Comment"># . . push args</span> +<span id="L282" class="LineNr">282 </span> 56/push-ESI +<span id="L283" class="LineNr">283 </span> <span class="subxS2Comment"># . . call</span> +<span id="L284" class="LineNr">284 </span> e8/call get-char/disp32 +<span id="L285" class="LineNr">285 </span> <span class="subxS2Comment"># . . discard args</span> +<span id="L286" class="LineNr">286 </span> 81 0/subop/add 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 4/imm32 <span class="subxComment"># add to ESP</span> +<span id="L287" class="LineNr">287 </span><span class="Constant">$get-num:loop-end</span>: +<span id="L288" class="LineNr">288 </span> <span class="subxComment"># persist necessary variables from registers</span> +<span id="L289" class="LineNr">289 </span> 89/copy 0/mod/indirect 7/rm32/EDI <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 1/r32/ECX <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="subxComment"># copy ECX to *EDI</span> +<span id="L290" class="LineNr">290 </span> <span class="subxS1Comment"># . restore registers</span> +<span id="L291" class="LineNr">291 </span> 5f/pop-to-EDI +<span id="L292" class="LineNr">292 </span> 5e/pop-to-ESI +<span id="L293" class="LineNr">293 </span> 5b/pop-to-EBX +<span id="L294" class="LineNr">294 </span> 5a/pop-to-EDX +<span id="L295" class="LineNr">295 </span> 59/pop-to-ECX +<span id="L296" class="LineNr">296 </span> 58/pop-to-EAX +<span id="L297" class="LineNr">297 </span> <span class="subxS1Comment"># . epilog</span> +<span id="L298" class="LineNr">298 </span> 89/copy 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 5/r32/EBP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="subxComment"># copy EBP to ESP</span> +<span id="L299" class="LineNr">299 </span> 5d/pop-to-EBP +<span id="L300" class="LineNr">300 </span> c3/return +<span id="L301" class="LineNr">301 </span> +<span id="L302" class="LineNr">302 </span><span class="subxTest">test-get-num-reads-single-digit</span>: +<span id="L303" class="LineNr">303 </span> <span class="subxH1Comment"># - check that get-num returns first character if it's a digit</span> +<span id="L304" class="LineNr">304 </span> <span class="subxComment"># This test uses exit-descriptors. Use EBP for setting up local variables.</span> +<span id="L305" class="LineNr">305 </span> 55/push-EBP +<span id="L306" class="LineNr">306 </span> 89/copy 3/mod/direct 5/rm32/EBP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 4/r32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="subxComment"># copy ESP to EBP</span> +<span id="L307" class="LineNr">307 </span> <span class="subxComment"># clear all streams</span> +<span id="L308" class="LineNr">308 </span> <span class="subxS1Comment"># . clear-stream(_test-stream)</span> +<span id="L309" class="LineNr">309 </span> <span class="subxS2Comment"># . . push args</span> +<span id="L310" class="LineNr">310 </span> 68/push _test-stream/imm32 +<span id="L311" class="LineNr">311 </span> <span class="subxS2Comment"># . . call</span> +<span id="L312" class="LineNr">312 </span> e8/call clear-stream/disp32 +<span id="L313" class="LineNr">313 </span> <span class="subxS2Comment"># . . discard args</span> +<span id="L314" class="LineNr">314 </span> 81 0/subop/add 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 4/imm32 <span class="subxComment"># add to ESP</span> +<span id="L315" class="LineNr">315 </span> <span class="subxS1Comment"># . clear-stream(_test-buffered-file+4)</span> +<span id="L316" class="LineNr">316 </span> <span class="subxS2Comment"># . . push args</span> +<span id="L317" class="LineNr">317 </span> b8/copy-to-EAX _test-buffered-file/imm32 +<span id="L318" class="LineNr">318 </span> 05/add-to-EAX 4/imm32 +<span id="L319" class="LineNr">319 </span> 50/push-EAX +<span id="L320" class="LineNr">320 </span> <span class="subxS2Comment"># . . call</span> +<span id="L321" class="LineNr">321 </span> e8/call clear-stream/disp32 +<span id="L322" class="LineNr">322 </span> <span class="subxS2Comment"># . . discard args</span> +<span id="L323" class="LineNr">323 </span> 81 0/subop/add 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 4/imm32 <span class="subxComment"># add to ESP</span> +<span id="L324" class="LineNr">324 </span> <span class="subxS1Comment"># . clear-stream(_test-output-stream)</span> +<span id="L325" class="LineNr">325 </span> <span class="subxS2Comment"># . . push args</span> +<span id="L326" class="LineNr">326 </span> 68/push _test-output-stream/imm32 +<span id="L327" class="LineNr">327 </span> <span class="subxS2Comment"># . . call</span> +<span id="L328" class="LineNr">328 </span> e8/call clear-stream/disp32 +<span id="L329" class="LineNr">329 </span> <span class="subxS2Comment"># . . discard args</span> +<span id="L330" class="LineNr">330 </span> 81 0/subop/add 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 4/imm32 <span class="subxComment"># add to ESP</span> +<span id="L331" class="LineNr">331 </span> <span class="subxS1Comment"># . clear-stream(_test-error-stream)</span> +<span id="L332" class="LineNr">332 </span> <span class="subxS2Comment"># . . push args</span> +<span id="L333" class="LineNr">333 </span> 68/push _test-error-stream/imm32 +<span id="L334" class="LineNr">334 </span> <span class="subxS2Comment"># . . call</span> +<span id="L335" class="LineNr">335 </span> e8/call clear-stream/disp32 +<span id="L336" class="LineNr">336 </span> <span class="subxS2Comment"># . . discard args</span> +<span id="L337" class="LineNr">337 </span> 81 0/subop/add 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 4/imm32 <span class="subxComment"># add to ESP</span> +<span id="L338" class="LineNr">338 </span> <span class="subxComment"># initialize 'in'</span> +<span id="L339" class="LineNr">339 </span> <span class="subxS1Comment"># . write(_test-stream, "3")</span> +<span id="L340" class="LineNr">340 </span> <span class="subxS2Comment"># . . push args</span> +<span id="L341" class="LineNr">341 </span> 68/push <span class="Constant">"3"</span>/imm32 +<span id="L342" class="LineNr">342 </span> 68/push _test-stream/imm32 +<span id="L343" class="LineNr">343 </span> <span class="subxS2Comment"># . . call</span> +<span id="L344" class="LineNr">344 </span> e8/call write/disp32 +<span id="L345" class="LineNr">345 </span> <span class="subxS2Comment"># . . discard args</span> +<span id="L346" class="LineNr">346 </span> 81 0/subop/add 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 8/imm32 <span class="subxComment"># add to ESP</span> +<span id="L347" class="LineNr">347 </span> <span class="subxComment"># initialize exit-descriptor 'ed' for the call to 'get-num' below</span> +<span id="L348" class="LineNr">348 </span> <span class="subxS1Comment"># . var ed/EAX : exit-descriptor</span> +<span id="L349" class="LineNr">349 </span> 81 5/subop/subtract 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 8/imm32 <span class="subxComment"># subtract from ESP</span> +<span id="L350" class="LineNr">350 </span> 8d/copy-address 0/mod/indirect 4/rm32/sib 4/base/ESP 4/index/none <span class="CommentedCode"> . </span> 0/r32/EAX <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="subxComment"># copy ESP to EAX</span> +<span id="L351" class="LineNr">351 </span> <span class="subxS1Comment"># . tailor-exit-descriptor(ed, 16)</span> +<span id="L352" class="LineNr">352 </span> <span class="subxS2Comment"># . . push args</span> +<span id="L353" class="LineNr">353 </span> 68/push 0x10/imm32/nbytes-of-args-for-get-num +<span id="L354" class="LineNr">354 </span> 50/push-EAX/ed +<span id="L355" class="LineNr">355 </span> <span class="subxS2Comment"># . . call</span> +<span id="L356" class="LineNr">356 </span> e8/call tailor-exit-descriptor/disp32 +<span id="L357" class="LineNr">357 </span> <span class="subxS2Comment"># . . discard args</span> +<span id="L358" class="LineNr">358 </span> 81 0/subop/add 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 8/imm32 <span class="subxComment"># add to ESP</span> +<span id="L359" class="LineNr">359 </span> <span class="subxComment"># prime the pump</span> +<span id="L360" class="LineNr">360 </span> <span class="subxS1Comment"># . get-char(_test-buffered-file)</span> +<span id="L361" class="LineNr">361 </span> <span class="subxS2Comment"># . . push args</span> +<span id="L362" class="LineNr">362 </span> 68/push _test-buffered-file/imm32 +<span id="L363" class="LineNr">363 </span> <span class="subxS2Comment"># . . call</span> +<span id="L364" class="LineNr">364 </span> e8/call get-char/disp32 +<span id="L365" class="LineNr">365 </span> <span class="subxS2Comment"># . . discard args</span> +<span id="L366" class="LineNr">366 </span> 81 0/subop/add 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 4/imm32 <span class="subxComment"># add to ESP</span> +<span id="L367" class="LineNr">367 </span> <span class="subxComment"># get-num(in, out, err, ed)</span> +<span id="L368" class="LineNr">368 </span> <span class="subxS2Comment"># . . push args</span> +<span id="L369" class="LineNr">369 </span> 50/push-EAX/ed +<span id="L370" class="LineNr">370 </span> 68/push _test-error-stream/imm32 +<span id="L371" class="LineNr">371 </span> 68/push _test-output-stream/imm32 +<span id="L372" class="LineNr">372 </span> 68/push _test-buffered-file/imm32 +<span id="L373" class="LineNr">373 </span> <span class="subxS2Comment"># . . call</span> +<span id="L374" class="LineNr">374 </span> e8/call get-num/disp32 +<span id="L375" class="LineNr">375 </span> <span class="subxComment"># registers except ESP may be clobbered at this point</span> +<span id="L376" class="LineNr">376 </span> <span class="subxS2Comment"># . . discard args</span> +<span id="L377" class="LineNr">377 </span> 81 0/subop/add 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 0x10/imm32 <span class="subxComment"># add to ESP</span> +<span id="L378" class="LineNr">378 </span> <span class="subxComment"># check-ints-equal(*_test-output-stream->data, '3')</span> +<span id="L379" class="LineNr">379 </span> <span class="subxS2Comment"># . . push args</span> +<span id="L380" class="LineNr">380 </span> 68/push <span class="Constant">"F - test-get-num-reads-single-digit"</span>/imm32 +<span id="L381" class="LineNr">381 </span> 68/push 0x33/imm32 +<span id="L382" class="LineNr">382 </span> b8/copy-to-EAX _test-output-stream/imm32 +<span id="L383" class="LineNr">383 </span> ff 6/subop/push 1/mod/*+disp8 0/rm32/EAX <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 0xc/disp8 <span class="CommentedCode"> . </span> <span class="subxComment"># push *(EAX+12)</span> +<span id="L384" class="LineNr">384 </span> <span class="subxS2Comment"># . . call</span> +<span id="L385" class="LineNr">385 </span> e8/call check-ints-equal/disp32 +<span id="L386" class="LineNr">386 </span> <span class="subxS2Comment"># . . discard args</span> +<span id="L387" class="LineNr">387 </span> 81 0/subop/add 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 0xc/imm32 <span class="subxComment"># add to ESP</span> +<span id="L388" class="LineNr">388 </span> <span class="subxS1Comment"># . reclaim locals</span> +<span id="L389" class="LineNr">389 </span> 81 0/subop/add 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 8/imm32 <span class="subxComment"># add to ESP</span> +<span id="L390" class="LineNr">390 </span> 5d/pop-to-EBP +<span id="L391" class="LineNr">391 </span> c3/return +<span id="L392" class="LineNr">392 </span> +<span id="L393" class="LineNr">393 </span><span class="subxTest">test-get-num-aborts-on-non-digit-in-Look</span>: +<span id="L394" class="LineNr">394 </span> <span class="subxH1Comment"># - check that get-num returns first character if it's a digit</span> +<span id="L395" class="LineNr">395 </span> <span class="subxComment"># This test uses exit-descriptors. Use EBP for setting up local variables.</span> +<span id="L396" class="LineNr">396 </span> 55/push-EBP +<span id="L397" class="LineNr">397 </span> 89/copy 3/mod/direct 5/rm32/EBP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 4/r32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="subxComment"># copy ESP to EBP</span> +<span id="L398" class="LineNr">398 </span> <span class="subxComment"># clear all streams</span> +<span id="L399" class="LineNr">399 </span> <span class="subxS1Comment"># . clear-stream(_test-stream)</span> +<span id="L400" class="LineNr">400 </span> <span class="subxS2Comment"># . . push args</span> +<span id="L401" class="LineNr">401 </span> 68/push _test-stream/imm32 +<span id="L402" class="LineNr">402 </span> <span class="subxS2Comment"># . . call</span> +<span id="L403" class="LineNr">403 </span> e8/call clear-stream/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="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 4/imm32 <span class="subxComment"># add to ESP</span> +<span id="L406" class="LineNr">406 </span> <span class="subxS1Comment"># . clear-stream(_test-buffered-file+4)</span> +<span id="L407" class="LineNr">407 </span> <span class="subxS2Comment"># . . push args</span> +<span id="L408" class="LineNr">408 </span> b8/copy-to-EAX _test-buffered-file/imm32 +<span id="L409" class="LineNr">409 </span> 05/add-to-EAX 4/imm32 +<span id="L410" class="LineNr">410 </span> 50/push-EAX +<span id="L411" class="LineNr">411 </span> <span class="subxS2Comment"># . . call</span> +<span id="L412" class="LineNr">412 </span> e8/call clear-stream/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="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 4/imm32 <span class="subxComment"># add to ESP</span> +<span id="L415" class="LineNr">415 </span> <span class="subxS1Comment"># . clear-stream(_test-output-stream)</span> +<span id="L416" class="LineNr">416 </span> <span class="subxS2Comment"># . . push args</span> +<span id="L417" class="LineNr">417 </span> 68/push _test-output-stream/imm32 +<span id="L418" class="LineNr">418 </span> <span class="subxS2Comment"># . . call</span> +<span id="L419" class="LineNr">419 </span> e8/call clear-stream/disp32 +<span id="L420" class="LineNr">420 </span> <span class="subxS2Comment"># . . discard args</span> +<span id="L421" class="LineNr">421 </span> 81 0/subop/add 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 4/imm32 <span class="subxComment"># add to ESP</span> +<span id="L422" class="LineNr">422 </span> <span class="subxS1Comment"># . clear-stream(_test-error-stream)</span> +<span id="L423" class="LineNr">423 </span> <span class="subxS2Comment"># . . push args</span> +<span id="L424" class="LineNr">424 </span> 68/push _test-error-stream/imm32 +<span id="L425" class="LineNr">425 </span> <span class="subxS2Comment"># . . call</span> +<span id="L426" class="LineNr">426 </span> e8/call clear-stream/disp32 +<span id="L427" class="LineNr">427 </span> <span class="subxS2Comment"># . . discard args</span> +<span id="L428" class="LineNr">428 </span> 81 0/subop/add 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 4/imm32 <span class="subxComment"># add to ESP</span> +<span id="L429" class="LineNr">429 </span> <span class="subxComment"># initialize 'in'</span> +<span id="L430" class="LineNr">430 </span> <span class="subxS1Comment"># . write(_test-stream, "3")</span> +<span id="L431" class="LineNr">431 </span> <span class="subxS2Comment"># . . push args</span> +<span id="L432" class="LineNr">432 </span> 68/push <span class="Constant">"3"</span>/imm32 +<span id="L433" class="LineNr">433 </span> 68/push _test-stream/imm32 +<span id="L434" class="LineNr">434 </span> <span class="subxS2Comment"># . . call</span> +<span id="L435" class="LineNr">435 </span> e8/call write/disp32 +<span id="L436" class="LineNr">436 </span> <span class="subxS2Comment"># . . discard args</span> +<span id="L437" class="LineNr">437 </span> 81 0/subop/add 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 8/imm32 <span class="subxComment"># add to ESP</span> +<span id="L438" class="LineNr">438 </span> <span class="subxComment"># initialize exit-descriptor 'ed' for the call to 'get-num' below</span> +<span id="L439" class="LineNr">439 </span> <span class="subxS1Comment"># . var ed/EAX : (address exit-descriptor)</span> +<span id="L440" class="LineNr">440 </span> 81 5/subop/subtract 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 8/imm32 <span class="subxComment"># subtract from ESP</span> +<span id="L441" class="LineNr">441 </span> 8d/copy-address 0/mod/indirect 4/rm32/sib 4/base/ESP 4/index/none <span class="CommentedCode"> . </span> 0/r32/EAX <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="subxComment"># copy ESP to EAX</span> +<span id="L442" class="LineNr">442 </span> <span class="subxS1Comment"># . tailor-exit-descriptor(ed, 16)</span> +<span id="L443" class="LineNr">443 </span> <span class="subxS2Comment"># . . push args</span> +<span id="L444" class="LineNr">444 </span> 68/push 0x10/imm32/nbytes-of-args-for-get-num +<span id="L445" class="LineNr">445 </span> 50/push-EAX/ed +<span id="L446" class="LineNr">446 </span> <span class="subxS2Comment"># . . call</span> +<span id="L447" class="LineNr">447 </span> e8/call tailor-exit-descriptor/disp32 +<span id="L448" class="LineNr">448 </span> <span class="subxS2Comment"># . . discard args</span> +<span id="L449" class="LineNr">449 </span> 81 0/subop/add 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 8/imm32 <span class="subxComment"># add to ESP</span> +<span id="L450" class="LineNr">450 </span> <span class="subxComment"># *don't* prime the pump</span> +<span id="L451" class="LineNr">451 </span> <span class="subxComment"># get-num(in, out, err, ed)</span> +<span id="L452" class="LineNr">452 </span> <span class="subxS2Comment"># . . push args</span> +<span id="L453" class="LineNr">453 </span> 50/push-EAX/ed +<span id="L454" class="LineNr">454 </span> 68/push _test-error-stream/imm32 +<span id="L455" class="LineNr">455 </span> 68/push _test-output-stream/imm32 +<span id="L456" class="LineNr">456 </span> 68/push _test-buffered-file/imm32 +<span id="L457" class="LineNr">457 </span> <span class="subxS2Comment"># . . call</span> +<span id="L458" class="LineNr">458 </span> e8/call get-num/disp32 +<span id="L459" class="LineNr">459 </span> <span class="subxComment"># registers except ESP may be clobbered at this point</span> +<span id="L460" class="LineNr">460 </span> <span class="subxS2Comment"># . . discard args</span> +<span id="L461" class="LineNr">461 </span> 81 0/subop/add 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 0x10/imm32 <span class="subxComment"># add to ESP</span> +<span id="L462" class="LineNr">462 </span> <span class="subxComment"># check that get-num tried to call exit(1)</span> +<span id="L463" class="LineNr">463 </span> <span class="subxS1Comment"># . check-ints-equal(ed->value, 2, msg) # i.e. stop was called with value 1</span> +<span id="L464" class="LineNr">464 </span> <span class="subxS2Comment"># . . push args</span> +<span id="L465" class="LineNr">465 </span> 68/push <span class="Constant">"F - test-get-num-aborts-on-non-digit-in-Look"</span>/imm32 +<span id="L466" class="LineNr">466 </span> 68/push 2/imm32 +<span id="L467" class="LineNr">467 </span> <span class="subxS2Comment"># . . push ed->value</span> +<span id="L468" class="LineNr">468 </span> ff 6/subop/push 1/mod/*+disp8 0/rm32/EAX <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 4/disp8 <span class="CommentedCode"> . </span> <span class="subxComment"># push *(EAX+4)</span> +<span id="L469" class="LineNr">469 </span> <span class="subxS2Comment"># . . call</span> +<span id="L470" class="LineNr">470 </span> e8/call check-ints-equal/disp32 +<span id="L471" class="LineNr">471 </span> <span class="subxS2Comment"># . . discard args</span> +<span id="L472" class="LineNr">472 </span> 81 0/subop/add 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 0xc/imm32 <span class="subxComment"># add to ESP</span> +<span id="L473" class="LineNr">473 </span> <span class="subxS1Comment"># . reclaim locals</span> +<span id="L474" class="LineNr">474 </span> 81 0/subop/add 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 8/imm32 <span class="subxComment"># add to ESP</span> +<span id="L475" class="LineNr">475 </span> 5d/pop-to-EBP +<span id="L476" class="LineNr">476 </span> c3/return +<span id="L477" class="LineNr">477 </span> +<span id="L478" class="LineNr">478 </span><span class="subxComment">## helpers</span> +<span id="L479" class="LineNr">479 </span> +<span id="L480" class="LineNr">480 </span><span class="subxComment"># write(f, "Error: "+s+" expected\n") then stop(ed, 1)</span> +<span id="L481" class="LineNr">481 </span><span class="subxFunction">expected</span>: <span class="subxComment"># ed : (address exit-descriptor), f : fd or (address stream), s : (address array byte) -> <void></span> +<span id="L482" class="LineNr">482 </span> <span class="subxS1Comment"># . prolog</span> +<span id="L483" class="LineNr">483 </span> 55/push-EBP +<span id="L484" class="LineNr">484 </span> 89/copy 3/mod/direct 5/rm32/EBP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 4/r32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="subxComment"># copy ESP to EBP</span> +<span id="L485" class="LineNr">485 </span> <span class="subxComment"># write(f, "Error: ")</span> +<span id="L486" class="LineNr">486 </span> <span class="subxS2Comment"># . . push args</span> +<span id="L487" class="LineNr">487 </span> 68/push <span class="Constant">"Error: "</span>/imm32 +<span id="L488" class="LineNr">488 </span> ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 0xc/disp8 <span class="CommentedCode"> . </span> <span class="subxComment"># push *(EBP+12)</span> +<span id="L489" class="LineNr">489 </span> <span class="subxS2Comment"># . . call</span> +<span id="L490" class="LineNr">490 </span> e8/call write/disp32 +<span id="L491" class="LineNr">491 </span> <span class="subxS2Comment"># . . discard args</span> +<span id="L492" class="LineNr">492 </span> 81 0/subop/add 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 8/imm32 <span class="subxComment"># add to ESP</span> +<span id="L493" class="LineNr">493 </span> <span class="subxComment"># write(f, s)</span> +<span id="L494" class="LineNr">494 </span> <span class="subxS2Comment"># . . push args</span> +<span id="L495" class="LineNr">495 </span> ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 0x10/disp8 <span class="CommentedCode"> . </span> <span class="subxComment"># push *(EBP+16)</span> +<span id="L496" class="LineNr">496 </span> ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 0xc/disp8 <span class="CommentedCode"> . </span> <span class="subxComment"># push *(EBP+12)</span> +<span id="L497" class="LineNr">497 </span> <span class="subxS2Comment"># . . call</span> +<span id="L498" class="LineNr">498 </span> e8/call write/disp32 +<span id="L499" class="LineNr">499 </span> <span class="subxS2Comment"># . . discard args</span> +<span id="L500" class="LineNr">500 </span> 81 0/subop/add 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 8/imm32 <span class="subxComment"># add to ESP</span> +<span id="L501" class="LineNr">501 </span> <span class="subxComment"># write(f, " expected")</span> +<span id="L502" class="LineNr">502 </span> <span class="subxS2Comment"># . . push args</span> +<span id="L503" class="LineNr">503 </span> 68/push <span class="Constant">" expected"</span>/imm32 +<span id="L504" class="LineNr">504 </span> ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 0xc/disp8 <span class="CommentedCode"> . </span> <span class="subxComment"># push *(EBP+12)</span> +<span id="L505" class="LineNr">505 </span> <span class="subxS2Comment"># . . call</span> +<span id="L506" class="LineNr">506 </span> e8/call write/disp32 +<span id="L507" class="LineNr">507 </span> <span class="subxS2Comment"># . . discard args</span> +<span id="L508" class="LineNr">508 </span> 81 0/subop/add 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 8/imm32 <span class="subxComment"># add to ESP</span> +<span id="L509" class="LineNr">509 </span> <span class="subxComment"># write(f, Newline)</span> +<span id="L510" class="LineNr">510 </span> <span class="subxS2Comment"># . . push args</span> +<span id="L511" class="LineNr">511 </span> 68/push <span class="SpecialChar">Newline</span>/imm32 +<span id="L512" class="LineNr">512 </span> ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 0xc/disp8 <span class="CommentedCode"> . </span> <span class="subxComment"># push *(EBP+12)</span> +<span id="L513" class="LineNr">513 </span> <span class="subxS2Comment"># . . call</span> +<span id="L514" class="LineNr">514 </span> e8/call write/disp32 +<span id="L515" class="LineNr">515 </span> <span class="subxS2Comment"># . . discard args</span> +<span id="L516" class="LineNr">516 </span> 81 0/subop/add 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 8/imm32 <span class="subxComment"># add to ESP</span> +<span id="L517" class="LineNr">517 </span> <span class="subxComment"># stop(ed, 1)</span> +<span id="L518" class="LineNr">518 </span> <span class="subxS2Comment"># . . push args</span> +<span id="L519" class="LineNr">519 </span> 68/push 1/imm32 +<span id="L520" class="LineNr">520 </span> ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 8/disp8 <span class="CommentedCode"> . </span> <span class="subxComment"># push *(EBP+8)</span> +<span id="L521" class="LineNr">521 </span> <span class="subxS2Comment"># . . call</span> +<span id="L522" class="LineNr">522 </span> e8/call stop/disp32 +<span id="L523" class="LineNr">523 </span> <span class="subxComment"># should never get past this point</span> +<span id="L524" class="LineNr">524 </span> <span class="subxS1Comment"># . epilog</span> +<span id="L525" class="LineNr">525 </span> 89/copy 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 5/r32/EBP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="subxComment"># copy EBP to ESP</span> +<span id="L526" class="LineNr">526 </span> 5d/pop-to-EBP +<span id="L527" class="LineNr">527 </span> c3/return +<span id="L528" class="LineNr">528 </span> +<span id="L529" class="LineNr">529 </span><span class="subxComment"># write(f, "Error: "+s+"\n") then stop(ed, 1)</span> +<span id="L530" class="LineNr">530 </span><span class="subxFunction">error</span>: <span class="subxComment"># ed : (address exit-descriptor), f : fd or (address stream), s : (address array byte) -> <void></span> +<span id="L531" class="LineNr">531 </span> <span class="subxS1Comment"># . prolog</span> +<span id="L532" class="LineNr">532 </span> 55/push-EBP +<span id="L533" class="LineNr">533 </span> 89/copy 3/mod/direct 5/rm32/EBP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 4/r32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="subxComment"># copy ESP to EBP</span> +<span id="L534" class="LineNr">534 </span> <span class="subxComment"># write(f, "Error: ")</span> +<span id="L535" class="LineNr">535 </span> <span class="subxS2Comment"># . . push args</span> +<span id="L536" class="LineNr">536 </span> 68/push <span class="Constant">"Error: "</span>/imm32 +<span id="L537" class="LineNr">537 </span> ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 0xc/disp8 <span class="CommentedCode"> . </span> <span class="subxComment"># push *(EBP+12)</span> +<span id="L538" class="LineNr">538 </span> <span class="subxS2Comment"># . . call</span> +<span id="L539" class="LineNr">539 </span> e8/call write/disp32 +<span id="L540" class="LineNr">540 </span> <span class="subxS2Comment"># . . discard args</span> +<span id="L541" class="LineNr">541 </span> 81 0/subop/add 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 8/imm32 <span class="subxComment"># add to ESP</span> +<span id="L542" class="LineNr">542 </span> <span class="subxComment"># write(f, s)</span> +<span id="L543" class="LineNr">543 </span> <span class="subxS2Comment"># . . push args</span> +<span id="L544" class="LineNr">544 </span> ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 0x10/disp8 <span class="CommentedCode"> . </span> <span class="subxComment"># push *(EBP+16)</span> +<span id="L545" class="LineNr">545 </span> ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 0xc/disp8 <span class="CommentedCode"> . </span> <span class="subxComment"># push *(EBP+12)</span> +<span id="L546" class="LineNr">546 </span> <span class="subxS2Comment"># . . call</span> +<span id="L547" class="LineNr">547 </span> e8/call write/disp32 +<span id="L548" class="LineNr">548 </span> <span class="subxS2Comment"># . . discard args</span> +<span id="L549" class="LineNr">549 </span> 81 0/subop/add 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 8/imm32 <span class="subxComment"># add to ESP</span> +<span id="L550" class="LineNr">550 </span> <span class="subxComment"># write(f, Newline)</span> +<span id="L551" class="LineNr">551 </span> <span class="subxS2Comment"># . . push args</span> +<span id="L552" class="LineNr">552 </span> 68/push <span class="SpecialChar">Newline</span>/imm32 +<span id="L553" class="LineNr">553 </span> ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 0xc/disp8 <span class="CommentedCode"> . </span> <span class="subxComment"># push *(EBP+12)</span> +<span id="L554" class="LineNr">554 </span> <span class="subxS2Comment"># . . call</span> +<span id="L555" class="LineNr">555 </span> e8/call write/disp32 +<span id="L556" class="LineNr">556 </span> <span class="subxS2Comment"># . . discard args</span> +<span id="L557" class="LineNr">557 </span> 81 0/subop/add 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 8/imm32 <span class="subxComment"># add to ESP</span> +<span id="L558" class="LineNr">558 </span> <span class="subxComment"># stop(ed, 1)</span> +<span id="L559" class="LineNr">559 </span> <span class="subxS2Comment"># . . push args</span> +<span id="L560" class="LineNr">560 </span> 68/push 1/imm32 +<span id="L561" class="LineNr">561 </span> ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 8/disp8 <span class="CommentedCode"> . </span> <span class="subxComment"># push *(EBP+8)</span> +<span id="L562" class="LineNr">562 </span> <span class="subxS2Comment"># . . call</span> +<span id="L563" class="LineNr">563 </span> e8/call stop/disp32 +<span id="L564" class="LineNr">564 </span> <span class="subxComment"># should never get past this point</span> +<span id="L565" class="LineNr">565 </span> <span class="subxS1Comment"># . epilog</span> +<span id="L566" class="LineNr">566 </span> 89/copy 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 5/r32/EBP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="subxComment"># copy EBP to ESP</span> +<span id="L567" class="LineNr">567 </span> 5d/pop-to-EBP +<span id="L568" class="LineNr">568 </span> c3/return +<span id="L569" class="LineNr">569 </span> +<span id="L570" class="LineNr">570 </span><span class="subxComment"># read a byte from 'f', and save it in 'Look'</span> +<span id="L571" class="LineNr">571 </span><span class="subxFunction">get-char</span>: <span class="subxComment"># f : (address buffered-file) -> <void></span> +<span id="L572" class="LineNr">572 </span> <span class="subxS1Comment"># . prolog</span> +<span id="L573" class="LineNr">573 </span> 55/push-EBP +<span id="L574" class="LineNr">574 </span> 89/copy 3/mod/direct 5/rm32/EBP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 4/r32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="subxComment"># copy ESP to EBP</span> +<span id="L575" class="LineNr">575 </span> <span class="subxS1Comment"># . save registers</span> +<span id="L576" class="LineNr">576 </span> 50/push-EAX +<span id="L577" class="LineNr">577 </span> <span class="subxComment"># read-byte(f)</span> +<span id="L578" class="LineNr">578 </span> <span class="subxS2Comment"># . . push args</span> +<span id="L579" class="LineNr">579 </span> ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 0x8/disp8 <span class="CommentedCode"> . </span> <span class="subxComment"># push *(EBP+8)</span> +<span id="L580" class="LineNr">580 </span> <span class="subxS2Comment"># . . call</span> +<span id="L581" class="LineNr">581 </span> e8/call read-byte/disp32 +<span id="L582" class="LineNr">582 </span> <span class="subxS2Comment"># . . discard args</span> +<span id="L583" class="LineNr">583 </span> 81 0/subop/add 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 4/imm32 <span class="subxComment"># add to ESP</span> +<span id="L584" class="LineNr">584 </span> <span class="subxComment"># save EAX to Look</span> +<span id="L585" class="LineNr">585 </span> 89/copy 0/mod/indirect 5/rm32/.disp32 <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 0/r32/EAX <span class="SpecialChar">Look</span>/disp32 <span class="CommentedCode"> . </span> <span class="subxComment"># copy EAX to *Look</span> +<span id="L586" class="LineNr">586 </span> <span class="subxS1Comment"># . restore registers</span> +<span id="L587" class="LineNr">587 </span> 58/pop-to-EAX +<span id="L588" class="LineNr">588 </span> <span class="subxS1Comment"># . epilog</span> +<span id="L589" class="LineNr">589 </span> 89/copy 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 5/r32/EBP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="subxComment"># copy EBP to ESP</span> +<span id="L590" class="LineNr">590 </span> 5d/pop-to-EBP +<span id="L591" class="LineNr">591 </span> c3/return +<span id="L592" class="LineNr">592 </span> +<span id="L593" class="LineNr">593 </span>is-digit?: <span class="subxComment"># c : int -> bool/EAX</span> +<span id="L594" class="LineNr">594 </span> <span class="subxS1Comment"># . prolog</span> +<span id="L595" class="LineNr">595 </span> 55/push-EBP +<span id="L596" class="LineNr">596 </span> 89/copy 3/mod/direct 5/rm32/EBP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 4/r32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="subxComment"># copy ESP to EBP</span> +<span id="L597" class="LineNr">597 </span> <span class="subxComment"># EAX = false</span> +<span id="L598" class="LineNr">598 </span> b8/copy-to-EAX 0/imm32 +<span id="L599" class="LineNr">599 </span> <span class="subxComment"># if c < '0' return false</span> +<span id="L600" class="LineNr">600 </span> 81 7/subop/compare 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 0x8/disp8 0x30/imm32 <span class="subxComment"># compare *(EBP+8)</span> +<span id="L601" class="LineNr">601 </span> 7c/jump-if-lesser $is-digit?:end/disp8 +<span id="L602" class="LineNr">602 </span> <span class="subxComment"># if c > '9' return false</span> +<span id="L603" class="LineNr">603 </span> 81 7/subop/compare 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 0x8/disp8 0x39/imm32 <span class="subxComment"># compare *(EBP+8)</span> +<span id="L604" class="LineNr">604 </span> 7f/jump-if-greater $is-digit?:end/disp8 +<span id="L605" class="LineNr">605 </span> <span class="subxComment"># otherwise return true</span> +<span id="L606" class="LineNr">606 </span> b8/copy-to-EAX 1/imm32 +<span id="L607" class="LineNr">607 </span>$is-digit?:end: +<span id="L608" class="LineNr">608 </span> <span class="subxS1Comment"># . epilog</span> +<span id="L609" class="LineNr">609 </span> 89/copy 3/mod/direct 4/rm32/ESP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> 5/r32/EBP <span class="CommentedCode"> . </span> <span class="CommentedCode"> . </span> <span class="subxComment"># copy EBP to ESP</span> +<span id="L610" class="LineNr">610 </span> 5d/pop-to-EBP +<span id="L611" class="LineNr">611 </span> c3/return +<span id="L612" class="LineNr">612 </span> +<span id="L613" class="LineNr">613 </span>== data +<span id="L614" class="LineNr">614 </span> +<span id="L615" class="LineNr">615 </span><span class="SpecialChar">Look</span>: <span class="subxComment"># (char)</span> +<span id="L616" class="LineNr">616 </span> 00 00 00 00 <span class="subxComment"># = 0</span> +<span id="L617" class="LineNr">617 </span> +<span id="L618" class="LineNr">618 </span><span class="subxMinorFunction">_test-output-stream</span>: +<span id="L619" class="LineNr">619 </span> <span class="subxComment"># current write index</span> +<span id="L620" class="LineNr">620 </span> 00 00 00 00 +<span id="L621" class="LineNr">621 </span> <span class="subxComment"># current read index</span> +<span id="L622" class="LineNr">622 </span> 00 00 00 00 +<span id="L623" class="LineNr">623 </span> <span class="subxComment"># length (= 8)</span> +<span id="L624" class="LineNr">624 </span> 08 00 00 00 +<span id="L625" class="LineNr">625 </span> <span class="subxComment"># data</span> +<span id="L626" class="LineNr">626 </span> 00 00 00 00 00 00 00 00 <span class="subxComment"># 8 bytes</span> +<span id="L627" class="LineNr">627 </span> +<span id="L628" class="LineNr">628 </span><span class="subxMinorFunction">_test-error-stream</span>: +<span id="L629" class="LineNr">629 </span> <span class="subxComment"># current write index</span> +<span id="L630" class="LineNr">630 </span> 00 00 00 00 +<span id="L631" class="LineNr">631 </span> <span class="subxComment"># current read index</span> +<span id="L632" class="LineNr">632 </span> 00 00 00 00 +<span id="L633" class="LineNr">633 </span> <span class="subxComment"># length (= 8)</span> +<span id="L634" class="LineNr">634 </span> 08 00 00 00 +<span id="L635" class="LineNr">635 </span> <span class="subxComment"># data</span> +<span id="L636" class="LineNr">636 </span> 00 00 00 00 00 00 00 00 <span class="subxComment"># 8 bytes</span> +<span id="L637" class="LineNr">637 </span> +<span id="L638" class="LineNr">638 </span><span class="subxS2Comment"># . . vim:nowrap:textwidth=0</span> </pre> </body> </html> |