7262
This commit is contained in:
Kartik Agaram
parent
1696ed831a
commit
de8a15e9f0
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@ -56,8 +56,8 @@ if ('onhashchange' in window) {
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<a href='https://github.com/akkartik/mu/blob/master/302stack_allocate.subx'>https://github.com/akkartik/mu/blob/master/302stack_allocate.subx</a>
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<pre id='vimCodeElement'>
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<span id="L1" class="LineNr"> 1 </span><span class="subxComment"># A function which pushes n zeros on the stack.</span>
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<span id="L2" class="LineNr"> 2 </span><span class="subxComment"># Not really useful to call manually.</span>
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<span id="L3" class="LineNr"> 3 </span><span class="subxComment"># The Mu compiler uses it when defining arrays on the stack.</span>
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<span id="L2" class="LineNr"> 2 </span><span class="subxComment"># Really only intended to be called from code generated by mu.subx (for array</span>
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<span id="L3" class="LineNr"> 3 </span><span class="subxComment"># vars on the stack).</span>
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<span id="L4" class="LineNr"> 4 </span>
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<span id="L5" class="LineNr"> 5 </span>== code
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<span id="L6" class="LineNr"> 6 </span>
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@ -55,29 +55,30 @@ if ('onhashchange' in window) {
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<a href='https://github.com/akkartik/mu/blob/master/308allocate-array.subx'>https://github.com/akkartik/mu/blob/master/308allocate-array.subx</a>
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<pre id='vimCodeElement'>
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<span id="L1" class="LineNr"> 1 </span><span class="subxComment"># 2-arg version of allocate-array.</span>
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<span id="L2" class="LineNr"> 2 </span>
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<span id="L3" class="LineNr"> 3 </span>== code
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<span id="L4" class="LineNr"> 4 </span>
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<span id="L5" class="LineNr"> 5 </span><span class="subxFunction">allocate-array2</span>: <span class="subxComment"># ad: (addr allocation-descriptor), array-len: int, elem-size: int, out: (addr handle array _)</span>
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<span id="L6" class="LineNr"> 6 </span> <span class="subxS1Comment"># . prologue</span>
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<span id="L7" class="LineNr"> 7 </span> 55/push-ebp
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<span id="L8" class="LineNr"> 8 </span> 89/<- %ebp 4/r32/esp
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<span id="L9" class="LineNr"> 9 </span> <span class="subxS1Comment"># . save registers</span>
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<span id="L10" class="LineNr">10 </span> 50/push-eax
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<span id="L11" class="LineNr">11 </span> 52/push-edx
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<span id="L12" class="LineNr">12 </span> <span class="subxComment">#</span>
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<span id="L13" class="LineNr">13 </span> 8b/-> *(ebp+0xc) 0/r32/eax
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<span id="L14" class="LineNr">14 </span> f7 4/subop/multiply-into-edx-eax *(ebp+0x10)
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<span id="L15" class="LineNr">15 </span> <span class="subxComment"># TODO: check edx for overflow</span>
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<span id="L16" class="LineNr">16 </span> (<a href='120allocate.subx.html#L576'>allocate-array</a> *(ebp+8) %eax *(ebp+0x14))
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<span id="L17" class="LineNr">17 </span><span class="Constant">$allocate-array2:end</span>:
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<span id="L18" class="LineNr">18 </span> <span class="subxS1Comment"># . restore registers</span>
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<span id="L19" class="LineNr">19 </span> 5a/pop-to-edx
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<span id="L20" class="LineNr">20 </span> 58/pop-to-eax
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<span id="L21" class="LineNr">21 </span> <span class="subxS1Comment"># . epilogue</span>
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<span id="L22" class="LineNr">22 </span> 89/<- %esp 5/r32/ebp
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<span id="L23" class="LineNr">23 </span> 5d/pop-to-ebp
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<span id="L24" class="LineNr">24 </span> c3/return
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<span id="L2" class="LineNr"> 2 </span><span class="subxComment"># Really only intended to be called from code generated by mu.subx.</span>
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<span id="L3" class="LineNr"> 3 </span>
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<span id="L4" class="LineNr"> 4 </span>== code
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<span id="L5" class="LineNr"> 5 </span>
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<span id="L6" class="LineNr"> 6 </span><span class="subxFunction">allocate-array2</span>: <span class="subxComment"># ad: (addr allocation-descriptor), array-len: int, elem-size: int, out: (addr handle array _)</span>
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<span id="L7" class="LineNr"> 7 </span> <span class="subxS1Comment"># . prologue</span>
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<span id="L8" class="LineNr"> 8 </span> 55/push-ebp
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<span id="L9" class="LineNr"> 9 </span> 89/<- %ebp 4/r32/esp
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<span id="L10" class="LineNr">10 </span> <span class="subxS1Comment"># . save registers</span>
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<span id="L11" class="LineNr">11 </span> 50/push-eax
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<span id="L12" class="LineNr">12 </span> 52/push-edx
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<span id="L13" class="LineNr">13 </span> <span class="subxComment">#</span>
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<span id="L14" class="LineNr">14 </span> 8b/-> *(ebp+0xc) 0/r32/eax
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<span id="L15" class="LineNr">15 </span> f7 4/subop/multiply-into-edx-eax *(ebp+0x10)
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<span id="L16" class="LineNr">16 </span> <span class="subxComment"># TODO: check edx for overflow</span>
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<span id="L17" class="LineNr">17 </span> (<a href='120allocate.subx.html#L576'>allocate-array</a> *(ebp+8) %eax *(ebp+0x14))
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<span id="L18" class="LineNr">18 </span><span class="Constant">$allocate-array2:end</span>:
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<span id="L19" class="LineNr">19 </span> <span class="subxS1Comment"># . restore registers</span>
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<span id="L20" class="LineNr">20 </span> 5a/pop-to-edx
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<span id="L21" class="LineNr">21 </span> 58/pop-to-eax
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<span id="L22" class="LineNr">22 </span> <span class="subxS1Comment"># . epilogue</span>
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<span id="L23" class="LineNr">23 </span> 89/<- %esp 5/r32/ebp
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<span id="L24" class="LineNr">24 </span> 5d/pop-to-ebp
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<span id="L25" class="LineNr">25 </span> c3/return
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</pre>
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</body>
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</html>
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@ -56,162 +56,163 @@ if ('onhashchange' in window) {
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<body onload='JumpToLine();'>
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<a href='https://github.com/akkartik/mu/blob/master/310copy-bytes.subx'>https://github.com/akkartik/mu/blob/master/310copy-bytes.subx</a>
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<pre id='vimCodeElement'>
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<span id="L1" class="LineNr"> 1 </span><span class="subxComment"># Fill a region of memory with zeroes.</span>
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<span id="L2" class="LineNr"> 2 </span>
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<span id="L3" class="LineNr"> 3 </span>== code
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<span id="L4" class="LineNr"> 4 </span>
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<span id="L5" class="LineNr"> 5 </span><span class="subxFunction">copy-bytes</span>: <span class="subxComment"># src: (addr byte), dest: (addr byte), size: int</span>
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<span id="L6" class="LineNr"> 6 </span> <span class="subxComment"># pseudocode:</span>
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<span id="L7" class="LineNr"> 7 </span> <span class="subxComment"># curr-src/esi = src</span>
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<span id="L8" class="LineNr"> 8 </span> <span class="subxComment"># curr-dest/edi = dest</span>
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<span id="L9" class="LineNr"> 9 </span> <span class="subxComment"># i/ecx = 0</span>
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<span id="L10" class="LineNr"> 10 </span> <span class="subxComment"># while true</span>
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<span id="L11" class="LineNr"> 11 </span> <span class="subxComment"># if (i >= size) break</span>
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<span id="L12" class="LineNr"> 12 </span> <span class="subxComment"># *curr-dest = *curr-src</span>
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<span id="L13" class="LineNr"> 13 </span> <span class="subxComment"># ++curr-src</span>
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<span id="L14" class="LineNr"> 14 </span> <span class="subxComment"># ++curr-dest</span>
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<span id="L15" class="LineNr"> 15 </span> <span class="subxComment"># ++i</span>
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<span id="L16" class="LineNr"> 16 </span> <span class="subxComment">#</span>
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<span id="L17" class="LineNr"> 17 </span> <span class="subxS1Comment"># . prologue</span>
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<span id="L18" class="LineNr"> 18 </span> 55/push-ebp
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<span id="L19" class="LineNr"> 19 </span> 89/<- %ebp 4/r32/esp
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<span id="L20" class="LineNr"> 20 </span> <span class="subxS1Comment"># . save registers</span>
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<span id="L21" class="LineNr"> 21 </span> 50/push-eax
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<span id="L22" class="LineNr"> 22 </span> 51/push-ecx
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<span id="L23" class="LineNr"> 23 </span> 52/push-edx
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<span id="L24" class="LineNr"> 24 </span> 56/push-esi
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<span id="L25" class="LineNr"> 25 </span> 57/push-edi
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<span id="L26" class="LineNr"> 26 </span> <span class="subxComment"># curr-src/esi = src</span>
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<span id="L27" class="LineNr"> 27 </span> 8b/-> *(ebp+8) 6/r32/esi
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<span id="L28" class="LineNr"> 28 </span> <span class="subxComment"># curr-dest/edi = dest</span>
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<span id="L29" class="LineNr"> 29 </span> 8b/-> *(ebp+0xc) 7/r32/edi
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<span id="L30" class="LineNr"> 30 </span> <span class="subxComment"># var i/ecx: int = 0</span>
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<span id="L31" class="LineNr"> 31 </span> b9/copy-to-ecx 0/imm32
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<span id="L32" class="LineNr"> 32 </span> <span class="subxComment"># edx = size</span>
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<span id="L33" class="LineNr"> 33 </span> 8b/-> *(ebp+0x10) 2/r32/edx
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<span id="L34" class="LineNr"> 34 </span> {
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<span id="L35" class="LineNr"> 35 </span> <span class="subxComment"># if (i >= size) break</span>
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<span id="L36" class="LineNr"> 36 </span> 39/compare %ecx 2/r32/edx
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<span id="L37" class="LineNr"> 37 </span> 7d/jump-if->= <span class="Constant">break</span>/disp8
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<span id="L38" class="LineNr"> 38 </span> <span class="subxComment"># *curr-dest = *curr-src</span>
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<span id="L39" class="LineNr"> 39 </span> 8a/byte-> *esi 0/r32/AL
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<span id="L40" class="LineNr"> 40 </span> 88/byte<- *edi 0/r32/AL
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<span id="L41" class="LineNr"> 41 </span> <span class="subxComment"># update</span>
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<span id="L42" class="LineNr"> 42 </span> 46/increment-esi
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<span id="L43" class="LineNr"> 43 </span> 47/increment-edi
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<span id="L44" class="LineNr"> 44 </span> 41/increment-ecx
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<span id="L45" class="LineNr"> 45 </span> eb/jump <span class="Constant">loop</span>/disp8
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<span id="L46" class="LineNr"> 46 </span> }
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<span id="L47" class="LineNr"> 47 </span><span class="Constant">$copy-bytes:end</span>:
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<span id="L48" class="LineNr"> 48 </span> <span class="subxS1Comment"># . restore registers</span>
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<span id="L49" class="LineNr"> 49 </span> 5f/pop-to-edi
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<span id="L50" class="LineNr"> 50 </span> 5e/pop-to-esi
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<span id="L51" class="LineNr"> 51 </span> 5a/pop-to-edx
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<span id="L52" class="LineNr"> 52 </span> 59/pop-to-ecx
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<span id="L53" class="LineNr"> 53 </span> 58/pop-to-eax
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<span id="L54" class="LineNr"> 54 </span> <span class="subxS1Comment"># . epilogue</span>
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<span id="L55" class="LineNr"> 55 </span> 89/<- %esp 5/r32/ebp
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<span id="L56" class="LineNr"> 56 </span> 5d/pop-to-ebp
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<span id="L57" class="LineNr"> 57 </span> c3/return
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<span id="L58" class="LineNr"> 58 </span>
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<span id="L59" class="LineNr"> 59 </span><span class="subxFunction">stream-to-array</span>: <span class="subxComment"># in: (addr stream _), out: (addr handle array _)</span>
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<span id="L60" class="LineNr"> 60 </span> <span class="subxS1Comment"># . prologue</span>
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<span id="L61" class="LineNr"> 61 </span> 55/push-ebp
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<span id="L62" class="LineNr"> 62 </span> 89/<- %ebp 4/r32/esp
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<span id="L63" class="LineNr"> 63 </span> <span class="subxS1Comment"># . save registers</span>
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<span id="L64" class="LineNr"> 64 </span> 50/push-eax
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<span id="L65" class="LineNr"> 65 </span> 51/push-ecx
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<span id="L66" class="LineNr"> 66 </span> 52/push-edx
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<span id="L67" class="LineNr"> 67 </span> 56/push-esi
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<span id="L68" class="LineNr"> 68 </span> <span class="subxComment"># esi = s</span>
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<span id="L69" class="LineNr"> 69 </span> 8b/-> *(ebp+8) 6/r32/esi
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<span id="L70" class="LineNr"> 70 </span> <span class="subxComment"># var len/ecx: int = s->write - s->read</span>
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<span id="L71" class="LineNr"> 71 </span> 8b/-> *esi 1/r32/ecx
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<span id="L72" class="LineNr"> 72 </span> 2b/subtract *(esi+4) 1/r32/ecx
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<span id="L73" class="LineNr"> 73 </span> <span class="subxComment"># allocate</span>
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<span id="L74" class="LineNr"> 74 </span> (<a href='120allocate.subx.html#L576'>allocate-array</a> <span class="SpecialChar"><a href='120allocate.subx.html#L27'>Heap</a></span> %ecx *(ebp+0xc))
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<span id="L75" class="LineNr"> 75 </span> <span class="subxComment"># var in/edx: (addr byte) = s->data + s->read</span>
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<span id="L76" class="LineNr"> 76 </span> 8b/-> *(esi+4) 2/r32/edx
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<span id="L77" class="LineNr"> 77 </span> 8d/copy-address *(esi+edx+0xc) 2/r32/edx
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<span id="L78" class="LineNr"> 78 </span> <span class="subxComment"># var dest/eax: (addr byte) = data for out</span>
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<span id="L79" class="LineNr"> 79 </span> 8b/-> *(ebp+0xc) 0/r32/eax
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<span id="L80" class="LineNr"> 80 </span> (<a href='120allocate.subx.html#L256'>lookup</a> *eax *(eax+4)) <span class="subxComment"># => eax</span>
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<span id="L81" class="LineNr"> 81 </span> 8d/copy-address *(eax+4) 0/r32/eax
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<span id="L82" class="LineNr"> 82 </span> <span class="subxComment">#</span>
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<span id="L83" class="LineNr"> 83 </span> (<a href='310copy-bytes.subx.html#L5'>copy-bytes</a> %edx %eax %ecx)
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<span id="L84" class="LineNr"> 84 </span><span class="Constant">$stream-to-array:end</span>:
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<span id="L85" class="LineNr"> 85 </span> <span class="subxS1Comment"># . restore registers</span>
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<span id="L86" class="LineNr"> 86 </span> 5e/pop-to-esi
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<span id="L87" class="LineNr"> 87 </span> 5a/pop-to-edx
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<span id="L88" class="LineNr"> 88 </span> 59/pop-to-ecx
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<span id="L89" class="LineNr"> 89 </span> 58/pop-to-eax
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<span id="L90" class="LineNr"> 90 </span> <span class="subxS1Comment"># . epilogue</span>
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<span id="L91" class="LineNr"> 91 </span> 89/<- %esp 5/r32/ebp
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<span id="L92" class="LineNr"> 92 </span> 5d/pop-to-ebp
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<span id="L93" class="LineNr"> 93 </span> c3/return
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<span id="L94" class="LineNr"> 94 </span>
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<span id="L95" class="LineNr"> 95 </span><span class="subxTest">test-stream-to-array</span>:
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<span id="L96" class="LineNr"> 96 </span> <span class="subxS1Comment"># . prologue</span>
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<span id="L97" class="LineNr"> 97 </span> 55/push-ebp
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<span id="L98" class="LineNr"> 98 </span> 89/<- %ebp 4/r32/esp
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<span id="L99" class="LineNr"> 99 </span> <span class="subxComment"># setup</span>
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<span id="L100" class="LineNr">100 </span> (<a href='106stream.subx.html#L17'>clear-stream</a> <a href='112read-byte.subx.html#L331'>_test-input-stream</a>)
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<span id="L101" class="LineNr">101 </span> (<a href='108write.subx.html#L24'>write</a> <a href='112read-byte.subx.html#L331'>_test-input-stream</a> <span class="Constant">"abc"</span>)
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<span id="L102" class="LineNr">102 </span> <span class="subxComment"># skip something</span>
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<span id="L103" class="LineNr">103 </span> (<a href='112read-byte.subx.html#L273'>read-byte</a> <a href='112read-byte.subx.html#L331'>_test-input-stream</a>) <span class="subxComment"># => eax</span>
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<span id="L104" class="LineNr">104 </span> <span class="subxComment"># var out/ecx: (handle array byte)</span>
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<span id="L105" class="LineNr">105 </span> 68/push 0/imm32
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<span id="L1" class="LineNr"> 1 </span><span class="subxComment"># Some helpers for copying non-overlapping regions of memory.</span>
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<span id="L2" class="LineNr"> 2 </span><span class="subxComment"># Really only intended to be called from code generated by mu.subx.</span>
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<span id="L3" class="LineNr"> 3 </span>
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<span id="L4" class="LineNr"> 4 </span>== code
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<span id="L5" class="LineNr"> 5 </span>
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<span id="L6" class="LineNr"> 6 </span><span class="subxFunction">copy-bytes</span>: <span class="subxComment"># src: (addr byte), dest: (addr byte), size: int</span>
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<span id="L7" class="LineNr"> 7 </span> <span class="subxComment"># pseudocode:</span>
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<span id="L8" class="LineNr"> 8 </span> <span class="subxComment"># curr-src/esi = src</span>
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<span id="L9" class="LineNr"> 9 </span> <span class="subxComment"># curr-dest/edi = dest</span>
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<span id="L10" class="LineNr"> 10 </span> <span class="subxComment"># i/ecx = 0</span>
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<span id="L11" class="LineNr"> 11 </span> <span class="subxComment"># while true</span>
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<span id="L12" class="LineNr"> 12 </span> <span class="subxComment"># if (i >= size) break</span>
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<span id="L13" class="LineNr"> 13 </span> <span class="subxComment"># *curr-dest = *curr-src</span>
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<span id="L14" class="LineNr"> 14 </span> <span class="subxComment"># ++curr-src</span>
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<span id="L15" class="LineNr"> 15 </span> <span class="subxComment"># ++curr-dest</span>
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<span id="L16" class="LineNr"> 16 </span> <span class="subxComment"># ++i</span>
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<span id="L17" class="LineNr"> 17 </span> <span class="subxComment">#</span>
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<span id="L18" class="LineNr"> 18 </span> <span class="subxS1Comment"># . prologue</span>
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<span id="L19" class="LineNr"> 19 </span> 55/push-ebp
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<span id="L20" class="LineNr"> 20 </span> 89/<- %ebp 4/r32/esp
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<span id="L21" class="LineNr"> 21 </span> <span class="subxS1Comment"># . save registers</span>
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<span id="L22" class="LineNr"> 22 </span> 50/push-eax
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<span id="L23" class="LineNr"> 23 </span> 51/push-ecx
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<span id="L24" class="LineNr"> 24 </span> 52/push-edx
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<span id="L25" class="LineNr"> 25 </span> 56/push-esi
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<span id="L26" class="LineNr"> 26 </span> 57/push-edi
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<span id="L27" class="LineNr"> 27 </span> <span class="subxComment"># curr-src/esi = src</span>
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<span id="L28" class="LineNr"> 28 </span> 8b/-> *(ebp+8) 6/r32/esi
|
||||
<span id="L29" class="LineNr"> 29 </span> <span class="subxComment"># curr-dest/edi = dest</span>
|
||||
<span id="L30" class="LineNr"> 30 </span> 8b/-> *(ebp+0xc) 7/r32/edi
|
||||
<span id="L31" class="LineNr"> 31 </span> <span class="subxComment"># var i/ecx: int = 0</span>
|
||||
<span id="L32" class="LineNr"> 32 </span> b9/copy-to-ecx 0/imm32
|
||||
<span id="L33" class="LineNr"> 33 </span> <span class="subxComment"># edx = size</span>
|
||||
<span id="L34" class="LineNr"> 34 </span> 8b/-> *(ebp+0x10) 2/r32/edx
|
||||
<span id="L35" class="LineNr"> 35 </span> {
|
||||
<span id="L36" class="LineNr"> 36 </span> <span class="subxComment"># if (i >= size) break</span>
|
||||
<span id="L37" class="LineNr"> 37 </span> 39/compare %ecx 2/r32/edx
|
||||
<span id="L38" class="LineNr"> 38 </span> 7d/jump-if->= <span class="Constant">break</span>/disp8
|
||||
<span id="L39" class="LineNr"> 39 </span> <span class="subxComment"># *curr-dest = *curr-src</span>
|
||||
<span id="L40" class="LineNr"> 40 </span> 8a/byte-> *esi 0/r32/AL
|
||||
<span id="L41" class="LineNr"> 41 </span> 88/byte<- *edi 0/r32/AL
|
||||
<span id="L42" class="LineNr"> 42 </span> <span class="subxComment"># update</span>
|
||||
<span id="L43" class="LineNr"> 43 </span> 46/increment-esi
|
||||
<span id="L44" class="LineNr"> 44 </span> 47/increment-edi
|
||||
<span id="L45" class="LineNr"> 45 </span> 41/increment-ecx
|
||||
<span id="L46" class="LineNr"> 46 </span> eb/jump <span class="Constant">loop</span>/disp8
|
||||
<span id="L47" class="LineNr"> 47 </span> }
|
||||
<span id="L48" class="LineNr"> 48 </span><span class="Constant">$copy-bytes:end</span>:
|
||||
<span id="L49" class="LineNr"> 49 </span> <span class="subxS1Comment"># . restore registers</span>
|
||||
<span id="L50" class="LineNr"> 50 </span> 5f/pop-to-edi
|
||||
<span id="L51" class="LineNr"> 51 </span> 5e/pop-to-esi
|
||||
<span id="L52" class="LineNr"> 52 </span> 5a/pop-to-edx
|
||||
<span id="L53" class="LineNr"> 53 </span> 59/pop-to-ecx
|
||||
<span id="L54" class="LineNr"> 54 </span> 58/pop-to-eax
|
||||
<span id="L55" class="LineNr"> 55 </span> <span class="subxS1Comment"># . epilogue</span>
|
||||
<span id="L56" class="LineNr"> 56 </span> 89/<- %esp 5/r32/ebp
|
||||
<span id="L57" class="LineNr"> 57 </span> 5d/pop-to-ebp
|
||||
<span id="L58" class="LineNr"> 58 </span> c3/return
|
||||
<span id="L59" class="LineNr"> 59 </span>
|
||||
<span id="L60" class="LineNr"> 60 </span><span class="subxFunction">stream-to-array</span>: <span class="subxComment"># in: (addr stream _), out: (addr handle array _)</span>
|
||||
<span id="L61" class="LineNr"> 61 </span> <span class="subxS1Comment"># . prologue</span>
|
||||
<span id="L62" class="LineNr"> 62 </span> 55/push-ebp
|
||||
<span id="L63" class="LineNr"> 63 </span> 89/<- %ebp 4/r32/esp
|
||||
<span id="L64" class="LineNr"> 64 </span> <span class="subxS1Comment"># . save registers</span>
|
||||
<span id="L65" class="LineNr"> 65 </span> 50/push-eax
|
||||
<span id="L66" class="LineNr"> 66 </span> 51/push-ecx
|
||||
<span id="L67" class="LineNr"> 67 </span> 52/push-edx
|
||||
<span id="L68" class="LineNr"> 68 </span> 56/push-esi
|
||||
<span id="L69" class="LineNr"> 69 </span> <span class="subxComment"># esi = s</span>
|
||||
<span id="L70" class="LineNr"> 70 </span> 8b/-> *(ebp+8) 6/r32/esi
|
||||
<span id="L71" class="LineNr"> 71 </span> <span class="subxComment"># var len/ecx: int = s->write - s->read</span>
|
||||
<span id="L72" class="LineNr"> 72 </span> 8b/-> *esi 1/r32/ecx
|
||||
<span id="L73" class="LineNr"> 73 </span> 2b/subtract *(esi+4) 1/r32/ecx
|
||||
<span id="L74" class="LineNr"> 74 </span> <span class="subxComment"># allocate</span>
|
||||
<span id="L75" class="LineNr"> 75 </span> (<a href='120allocate.subx.html#L576'>allocate-array</a> <span class="SpecialChar"><a href='120allocate.subx.html#L27'>Heap</a></span> %ecx *(ebp+0xc))
|
||||
<span id="L76" class="LineNr"> 76 </span> <span class="subxComment"># var in/edx: (addr byte) = s->data + s->read</span>
|
||||
<span id="L77" class="LineNr"> 77 </span> 8b/-> *(esi+4) 2/r32/edx
|
||||
<span id="L78" class="LineNr"> 78 </span> 8d/copy-address *(esi+edx+0xc) 2/r32/edx
|
||||
<span id="L79" class="LineNr"> 79 </span> <span class="subxComment"># var dest/eax: (addr byte) = data for out</span>
|
||||
<span id="L80" class="LineNr"> 80 </span> 8b/-> *(ebp+0xc) 0/r32/eax
|
||||
<span id="L81" class="LineNr"> 81 </span> (<a href='120allocate.subx.html#L256'>lookup</a> *eax *(eax+4)) <span class="subxComment"># => eax</span>
|
||||
<span id="L82" class="LineNr"> 82 </span> 8d/copy-address *(eax+4) 0/r32/eax
|
||||
<span id="L83" class="LineNr"> 83 </span> <span class="subxComment">#</span>
|
||||
<span id="L84" class="LineNr"> 84 </span> (<a href='310copy-bytes.subx.html#L6'>copy-bytes</a> %edx %eax %ecx)
|
||||
<span id="L85" class="LineNr"> 85 </span><span class="Constant">$stream-to-array:end</span>:
|
||||
<span id="L86" class="LineNr"> 86 </span> <span class="subxS1Comment"># . restore registers</span>
|
||||
<span id="L87" class="LineNr"> 87 </span> 5e/pop-to-esi
|
||||
<span id="L88" class="LineNr"> 88 </span> 5a/pop-to-edx
|
||||
<span id="L89" class="LineNr"> 89 </span> 59/pop-to-ecx
|
||||
<span id="L90" class="LineNr"> 90 </span> 58/pop-to-eax
|
||||
<span id="L91" class="LineNr"> 91 </span> <span class="subxS1Comment"># . epilogue</span>
|
||||
<span id="L92" class="LineNr"> 92 </span> 89/<- %esp 5/r32/ebp
|
||||
<span id="L93" class="LineNr"> 93 </span> 5d/pop-to-ebp
|
||||
<span id="L94" class="LineNr"> 94 </span> c3/return
|
||||
<span id="L95" class="LineNr"> 95 </span>
|
||||
<span id="L96" class="LineNr"> 96 </span><span class="subxTest">test-stream-to-array</span>:
|
||||
<span id="L97" class="LineNr"> 97 </span> <span class="subxS1Comment"># . prologue</span>
|
||||
<span id="L98" class="LineNr"> 98 </span> 55/push-ebp
|
||||
<span id="L99" class="LineNr"> 99 </span> 89/<- %ebp 4/r32/esp
|
||||
<span id="L100" class="LineNr">100 </span> <span class="subxComment"># setup</span>
|
||||
<span id="L101" class="LineNr">101 </span> (<a href='106stream.subx.html#L17'>clear-stream</a> <a href='112read-byte.subx.html#L331'>_test-input-stream</a>)
|
||||
<span id="L102" class="LineNr">102 </span> (<a href='108write.subx.html#L24'>write</a> <a href='112read-byte.subx.html#L331'>_test-input-stream</a> <span class="Constant">"abc"</span>)
|
||||
<span id="L103" class="LineNr">103 </span> <span class="subxComment"># skip something</span>
|
||||
<span id="L104" class="LineNr">104 </span> (<a href='112read-byte.subx.html#L273'>read-byte</a> <a href='112read-byte.subx.html#L331'>_test-input-stream</a>) <span class="subxComment"># => eax</span>
|
||||
<span id="L105" class="LineNr">105 </span> <span class="subxComment"># var out/ecx: (handle array byte)</span>
|
||||
<span id="L106" class="LineNr">106 </span> 68/push 0/imm32
|
||||
<span id="L107" class="LineNr">107 </span> 89/<- %ecx 4/r32/esp
|
||||
<span id="L108" class="LineNr">108 </span> <span class="subxComment">#</span>
|
||||
<span id="L109" class="LineNr">109 </span> (<a href='310copy-bytes.subx.html#L59'>stream-to-array</a> <a href='112read-byte.subx.html#L331'>_test-input-stream</a> %ecx)
|
||||
<span id="L110" class="LineNr">110 </span> (<a href='120allocate.subx.html#L256'>lookup</a> *ecx *(ecx+4)) <span class="subxComment"># => eax</span>
|
||||
<span id="L111" class="LineNr">111 </span> (<a href='105string-equal.subx.html#L220'>check-strings-equal</a> %eax <span class="Constant">"bc"</span>)
|
||||
<span id="L112" class="LineNr">112 </span> <span class="subxS1Comment"># . epilogue</span>
|
||||
<span id="L113" class="LineNr">113 </span> 89/<- %esp 5/r32/ebp
|
||||
<span id="L114" class="LineNr">114 </span> 5d/pop-to-ebp
|
||||
<span id="L115" class="LineNr">115 </span> c3/return
|
||||
<span id="L116" class="LineNr">116 </span>
|
||||
<span id="L117" class="LineNr">117 </span><span class="subxComment"># like stream-to-array but ignore surrounding quotes</span>
|
||||
<span id="L118" class="LineNr">118 </span><span class="subxComment"># we might do other stuff here later</span>
|
||||
<span id="L119" class="LineNr">119 </span><span class="subxFunction">unquote-stream-to-array</span>: <span class="subxComment"># in: (addr stream _), out: (addr handle array _)</span>
|
||||
<span id="L120" class="LineNr">120 </span> <span class="subxS1Comment"># . prologue</span>
|
||||
<span id="L121" class="LineNr">121 </span> 55/push-ebp
|
||||
<span id="L122" class="LineNr">122 </span> 89/<- %ebp 4/r32/esp
|
||||
<span id="L123" class="LineNr">123 </span> <span class="subxS1Comment"># . save registers</span>
|
||||
<span id="L124" class="LineNr">124 </span> 50/push-eax
|
||||
<span id="L125" class="LineNr">125 </span> 51/push-ecx
|
||||
<span id="L126" class="LineNr">126 </span> 52/push-edx
|
||||
<span id="L127" class="LineNr">127 </span> 56/push-esi
|
||||
<span id="L128" class="LineNr">128 </span> <span class="subxComment"># esi = s</span>
|
||||
<span id="L129" class="LineNr">129 </span> 8b/-> *(ebp+8) 6/r32/esi
|
||||
<span id="L130" class="LineNr">130 </span> <span class="subxComment"># var len/ecx: int = s->write - s->read - 2</span>
|
||||
<span id="L131" class="LineNr">131 </span> 8b/-> *esi 1/r32/ecx
|
||||
<span id="L132" class="LineNr">132 </span> 2b/subtract *(esi+4) 1/r32/ecx
|
||||
<span id="L133" class="LineNr">133 </span> 81 7/subop/compare %ecx 2/imm32
|
||||
<span id="L134" class="LineNr">134 </span> 7c/jump-if-< $unquote-stream-to-array:end/disp8
|
||||
<span id="L135" class="LineNr">135 </span> 81 5/subop/subtract %ecx 2/imm32
|
||||
<span id="L136" class="LineNr">136 </span> <span class="subxComment"># allocate</span>
|
||||
<span id="L137" class="LineNr">137 </span> (<a href='120allocate.subx.html#L576'>allocate-array</a> <span class="SpecialChar"><a href='120allocate.subx.html#L27'>Heap</a></span> %ecx *(ebp+0xc))
|
||||
<span id="L138" class="LineNr">138 </span> <span class="subxComment"># var in/edx: (addr byte) = s->data + s->read + 1</span>
|
||||
<span id="L139" class="LineNr">139 </span> 8b/-> *(esi+4) 2/r32/edx
|
||||
<span id="L140" class="LineNr">140 </span> 8d/copy-address *(esi+edx+0xd) 2/r32/edx <span class="subxComment"># Stream-data + 1</span>
|
||||
<span id="L141" class="LineNr">141 </span> <span class="subxComment"># var dest/eax: (addr byte) = data for out</span>
|
||||
<span id="L142" class="LineNr">142 </span> 8b/-> *(ebp+0xc) 0/r32/eax
|
||||
<span id="L143" class="LineNr">143 </span> (<a href='120allocate.subx.html#L256'>lookup</a> *eax *(eax+4)) <span class="subxComment"># => eax</span>
|
||||
<span id="L144" class="LineNr">144 </span> 8d/copy-address *(eax+4) 0/r32/eax
|
||||
<span id="L145" class="LineNr">145 </span> <span class="subxComment">#</span>
|
||||
<span id="L146" class="LineNr">146 </span> (<a href='310copy-bytes.subx.html#L5'>copy-bytes</a> %edx %eax %ecx)
|
||||
<span id="L147" class="LineNr">147 </span><span class="Constant">$unquote-stream-to-array:end</span>:
|
||||
<span id="L148" class="LineNr">148 </span> <span class="subxS1Comment"># . restore registers</span>
|
||||
<span id="L149" class="LineNr">149 </span> 5e/pop-to-esi
|
||||
<span id="L150" class="LineNr">150 </span> 5a/pop-to-edx
|
||||
<span id="L151" class="LineNr">151 </span> 59/pop-to-ecx
|
||||
<span id="L152" class="LineNr">152 </span> 58/pop-to-eax
|
||||
<span id="L153" class="LineNr">153 </span> <span class="subxS1Comment"># . epilogue</span>
|
||||
<span id="L154" class="LineNr">154 </span> 89/<- %esp 5/r32/ebp
|
||||
<span id="L155" class="LineNr">155 </span> 5d/pop-to-ebp
|
||||
<span id="L156" class="LineNr">156 </span> c3/return
|
||||
<span id="L107" class="LineNr">107 </span> 68/push 0/imm32
|
||||
<span id="L108" class="LineNr">108 </span> 89/<- %ecx 4/r32/esp
|
||||
<span id="L109" class="LineNr">109 </span> <span class="subxComment">#</span>
|
||||
<span id="L110" class="LineNr">110 </span> (<a href='310copy-bytes.subx.html#L60'>stream-to-array</a> <a href='112read-byte.subx.html#L331'>_test-input-stream</a> %ecx)
|
||||
<span id="L111" class="LineNr">111 </span> (<a href='120allocate.subx.html#L256'>lookup</a> *ecx *(ecx+4)) <span class="subxComment"># => eax</span>
|
||||
<span id="L112" class="LineNr">112 </span> (<a href='105string-equal.subx.html#L220'>check-strings-equal</a> %eax <span class="Constant">"bc"</span>)
|
||||
<span id="L113" class="LineNr">113 </span> <span class="subxS1Comment"># . epilogue</span>
|
||||
<span id="L114" class="LineNr">114 </span> 89/<- %esp 5/r32/ebp
|
||||
<span id="L115" class="LineNr">115 </span> 5d/pop-to-ebp
|
||||
<span id="L116" class="LineNr">116 </span> c3/return
|
||||
<span id="L117" class="LineNr">117 </span>
|
||||
<span id="L118" class="LineNr">118 </span><span class="subxComment"># like stream-to-array but ignore surrounding quotes</span>
|
||||
<span id="L119" class="LineNr">119 </span><span class="subxComment"># we might do other stuff here later</span>
|
||||
<span id="L120" class="LineNr">120 </span><span class="subxFunction">unquote-stream-to-array</span>: <span class="subxComment"># in: (addr stream _), out: (addr handle array _)</span>
|
||||
<span id="L121" class="LineNr">121 </span> <span class="subxS1Comment"># . prologue</span>
|
||||
<span id="L122" class="LineNr">122 </span> 55/push-ebp
|
||||
<span id="L123" class="LineNr">123 </span> 89/<- %ebp 4/r32/esp
|
||||
<span id="L124" class="LineNr">124 </span> <span class="subxS1Comment"># . save registers</span>
|
||||
<span id="L125" class="LineNr">125 </span> 50/push-eax
|
||||
<span id="L126" class="LineNr">126 </span> 51/push-ecx
|
||||
<span id="L127" class="LineNr">127 </span> 52/push-edx
|
||||
<span id="L128" class="LineNr">128 </span> 56/push-esi
|
||||
<span id="L129" class="LineNr">129 </span> <span class="subxComment"># esi = s</span>
|
||||
<span id="L130" class="LineNr">130 </span> 8b/-> *(ebp+8) 6/r32/esi
|
||||
<span id="L131" class="LineNr">131 </span> <span class="subxComment"># var len/ecx: int = s->write - s->read - 2</span>
|
||||
<span id="L132" class="LineNr">132 </span> 8b/-> *esi 1/r32/ecx
|
||||
<span id="L133" class="LineNr">133 </span> 2b/subtract *(esi+4) 1/r32/ecx
|
||||
<span id="L134" class="LineNr">134 </span> 81 7/subop/compare %ecx 2/imm32
|
||||
<span id="L135" class="LineNr">135 </span> 7c/jump-if-< $unquote-stream-to-array:end/disp8
|
||||
<span id="L136" class="LineNr">136 </span> 81 5/subop/subtract %ecx 2/imm32
|
||||
<span id="L137" class="LineNr">137 </span> <span class="subxComment"># allocate</span>
|
||||
<span id="L138" class="LineNr">138 </span> (<a href='120allocate.subx.html#L576'>allocate-array</a> <span class="SpecialChar"><a href='120allocate.subx.html#L27'>Heap</a></span> %ecx *(ebp+0xc))
|
||||
<span id="L139" class="LineNr">139 </span> <span class="subxComment"># var in/edx: (addr byte) = s->data + s->read + 1</span>
|
||||
<span id="L140" class="LineNr">140 </span> 8b/-> *(esi+4) 2/r32/edx
|
||||
<span id="L141" class="LineNr">141 </span> 8d/copy-address *(esi+edx+0xd) 2/r32/edx <span class="subxComment"># Stream-data + 1</span>
|
||||
<span id="L142" class="LineNr">142 </span> <span class="subxComment"># var dest/eax: (addr byte) = data for out</span>
|
||||
<span id="L143" class="LineNr">143 </span> 8b/-> *(ebp+0xc) 0/r32/eax
|
||||
<span id="L144" class="LineNr">144 </span> (<a href='120allocate.subx.html#L256'>lookup</a> *eax *(eax+4)) <span class="subxComment"># => eax</span>
|
||||
<span id="L145" class="LineNr">145 </span> 8d/copy-address *(eax+4) 0/r32/eax
|
||||
<span id="L146" class="LineNr">146 </span> <span class="subxComment">#</span>
|
||||
<span id="L147" class="LineNr">147 </span> (<a href='310copy-bytes.subx.html#L6'>copy-bytes</a> %edx %eax %ecx)
|
||||
<span id="L148" class="LineNr">148 </span><span class="Constant">$unquote-stream-to-array:end</span>:
|
||||
<span id="L149" class="LineNr">149 </span> <span class="subxS1Comment"># . restore registers</span>
|
||||
<span id="L150" class="LineNr">150 </span> 5e/pop-to-esi
|
||||
<span id="L151" class="LineNr">151 </span> 5a/pop-to-edx
|
||||
<span id="L152" class="LineNr">152 </span> 59/pop-to-ecx
|
||||
<span id="L153" class="LineNr">153 </span> 58/pop-to-eax
|
||||
<span id="L154" class="LineNr">154 </span> <span class="subxS1Comment"># . epilogue</span>
|
||||
<span id="L155" class="LineNr">155 </span> 89/<- %esp 5/r32/ebp
|
||||
<span id="L156" class="LineNr">156 </span> 5d/pop-to-ebp
|
||||
<span id="L157" class="LineNr">157 </span> c3/return
|
||||
</pre>
|
||||
</body>
|
||||
</html>
|
||||
|
|
|
|||
|
|
@ -0,0 +1,146 @@
|
|||
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
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||||
<html>
|
||||
<head>
|
||||
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
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||||
<title>Mu - 313index-bounds-check.subx</title>
|
||||
<meta name="Generator" content="Vim/8.1">
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<meta name="plugin-version" content="vim8.1_v1">
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<meta name="syntax" content="none">
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<meta name="settings" content="number_lines,use_css,pre_wrap,no_foldcolumn,expand_tabs,line_ids,prevent_copy=">
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<!--
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pre { white-space: pre-wrap; font-family: monospace; color: #000000; background-color: #c6c6c6; }
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body { font-size:12pt; font-family: monospace; color: #000000; background-color: #c6c6c6; }
|
||||
a { color:inherit; }
|
||||
* { font-size:12pt; font-size: 1em; }
|
||||
.subxComment { color: #005faf; }
|
||||
.LineNr { }
|
||||
.subxS1Comment { color: #0000af; }
|
||||
.CommentedCode { color: #8a8a8a; }
|
||||
.SpecialChar { color: #d70000; }
|
||||
.subxMinorFunction { color: #875f5f; }
|
||||
.Constant { color: #008787; }
|
||||
-->
|
||||
</style>
|
||||
|
||||
<script type='text/javascript'>
|
||||
<!--
|
||||
|
||||
/* function to open any folds containing a jumped-to line before jumping to it */
|
||||
function JumpToLine()
|
||||
{
|
||||
var lineNum;
|
||||
lineNum = window.location.hash;
|
||||
lineNum = lineNum.substr(1); /* strip off '#' */
|
||||
|
||||
if (lineNum.indexOf('L') == -1) {
|
||||
lineNum = 'L'+lineNum;
|
||||
}
|
||||
var lineElem = document.getElementById(lineNum);
|
||||
/* Always jump to new location even if the line was hidden inside a fold, or
|
||||
* we corrected the raw number to a line ID.
|
||||
*/
|
||||
if (lineElem) {
|
||||
lineElem.scrollIntoView(true);
|
||||
}
|
||||
return true;
|
||||
}
|
||||
if ('onhashchange' in window) {
|
||||
window.onhashchange = JumpToLine;
|
||||
}
|
||||
|
||||
-->
|
||||
</script>
|
||||
</head>
|
||||
<body onload='JumpToLine();'>
|
||||
<a href='https://github.com/akkartik/mu/blob/master/313index-bounds-check.subx'>https://github.com/akkartik/mu/blob/master/313index-bounds-check.subx</a>
|
||||
<pre id='vimCodeElement'>
|
||||
<span id="L1" class="LineNr"> 1 </span><span class="subxComment"># Helper to check an array's bounds, and to abort if they're violated.</span>
|
||||
<span id="L2" class="LineNr"> 2 </span><span class="subxComment"># Really only intended to be called from code generated by mu.subx.</span>
|
||||
<span id="L3" class="LineNr"> 3 </span>
|
||||
<span id="L4" class="LineNr"> 4 </span>== code
|
||||
<span id="L5" class="LineNr"> 5 </span>
|
||||
<span id="L6" class="LineNr"> 6 </span><span class="subxMinorFunction">__check-mu-array-bounds</span>: <span class="subxComment"># index: int, elem-size: int, arr-size: int, function-name: (addr array byte), array-name: (addr array byte)</span>
|
||||
<span id="L7" class="LineNr"> 7 </span> <span class="subxS1Comment"># . prologue</span>
|
||||
<span id="L8" class="LineNr"> 8 </span> 55/push-ebp
|
||||
<span id="L9" class="LineNr"> 9 </span> 89/<- %ebp 4/r32/esp
|
||||
<span id="L10" class="LineNr">10 </span> <span class="subxS1Comment"># . save registers</span>
|
||||
<span id="L11" class="LineNr">11 </span> 50/push-eax
|
||||
<span id="L12" class="LineNr">12 </span> 51/push-ecx
|
||||
<span id="L13" class="LineNr">13 </span> 52/push-edx
|
||||
<span id="L14" class="LineNr">14 </span> <span class="subxS1Comment"># . not bothering saving ebx; it's only clobbered if we're going to abort</span>
|
||||
<span id="L15" class="LineNr">15 </span> <span class="subxComment"># ecx = arr-size</span>
|
||||
<span id="L16" class="LineNr">16 </span> 8b/-> *(ebp+0x10) 1/r32/ecx
|
||||
<span id="L17" class="LineNr">17 </span> <span class="subxComment"># var overflow/edx: int = 0</span>
|
||||
<span id="L18" class="LineNr">18 </span> ba/copy-to-edx 0/imm32
|
||||
<span id="L19" class="LineNr">19 </span> <span class="subxComment"># var offset/eax: int = index * elem-size</span>
|
||||
<span id="L20" class="LineNr">20 </span> 8b/-> *(ebp+8) 0/r32/eax
|
||||
<span id="L21" class="LineNr">21 </span> f7 4/subop/multiply-eax-with *(ebp+0xc)
|
||||
<span id="L22" class="LineNr">22 </span> <span class="subxComment"># check for overflow</span>
|
||||
<span id="L23" class="LineNr">23 </span> 81 7/subop/compare %edx 0/imm32
|
||||
<span id="L24" class="LineNr">24 </span> 0f 85/jump-if-!= <a href='313index-bounds-check.subx.html#L6'>__check-mu-array-bounds</a>:overflow/disp32
|
||||
<span id="L25" class="LineNr">25 </span> <span class="subxComment"># check bounds</span>
|
||||
<span id="L26" class="LineNr">26 </span> 39/compare %eax 1/r32/ecx
|
||||
<span id="L27" class="LineNr">27 </span> 0f 82/jump-if-unsigned< $__check-mu-array-bounds:end/disp32 <span class="subxComment"># negative index should always abort</span>
|
||||
<span id="L28" class="LineNr">28 </span> <span class="subxComment"># abort if necessary</span>
|
||||
<span id="L29" class="LineNr">29 </span> (<a href='116write-buffered.subx.html#L8'>write-buffered</a> <span class="SpecialChar"><a href='116write-buffered.subx.html#L209'>Stderr</a></span> <span class="Constant">"fn "</span>)
|
||||
<span id="L30" class="LineNr">30 </span> (<a href='116write-buffered.subx.html#L8'>write-buffered</a> <span class="SpecialChar"><a href='116write-buffered.subx.html#L209'>Stderr</a></span> *(ebp+0x14))
|
||||
<span id="L31" class="LineNr">31 </span> (<a href='116write-buffered.subx.html#L8'>write-buffered</a> <span class="SpecialChar"><a href='116write-buffered.subx.html#L209'>Stderr</a></span> <span class="Constant">": offset "</span>)
|
||||
<span id="L32" class="LineNr">32 </span> (<a href='117write-int-hex.subx.html#L288'>write-int32-hex-buffered</a> <span class="SpecialChar"><a href='116write-buffered.subx.html#L209'>Stderr</a></span> %eax)
|
||||
<span id="L33" class="LineNr">33 </span> (<a href='116write-buffered.subx.html#L8'>write-buffered</a> <span class="SpecialChar"><a href='116write-buffered.subx.html#L209'>Stderr</a></span> <span class="Constant">" is too large for array '"</span>)
|
||||
<span id="L34" class="LineNr">34 </span> (<a href='116write-buffered.subx.html#L8'>write-buffered</a> <span class="SpecialChar"><a href='116write-buffered.subx.html#L209'>Stderr</a></span> *(ebp+0x18))
|
||||
<span id="L35" class="LineNr">35 </span> (<a href='116write-buffered.subx.html#L8'>write-buffered</a> <span class="SpecialChar"><a href='116write-buffered.subx.html#L209'>Stderr</a></span> <span class="Constant">"'\n"</span>)
|
||||
<span id="L36" class="LineNr">36 </span> (<a href='115write-byte.subx.html#L81'>flush</a> <span class="SpecialChar"><a href='116write-buffered.subx.html#L209'>Stderr</a></span>)
|
||||
<span id="L37" class="LineNr">37 </span> <span class="subxComment"># exit(1)</span>
|
||||
<span id="L38" class="LineNr">38 </span> bb/copy-to-ebx 1/imm32
|
||||
<span id="L39" class="LineNr">39 </span> e8/call syscall_exit/disp32
|
||||
<span id="L40" class="LineNr">40 </span><span class="Constant">$__check-mu-array-bounds:end</span>:
|
||||
<span id="L41" class="LineNr">41 </span> <span class="subxS1Comment"># . restore registers</span>
|
||||
<span id="L42" class="LineNr">42 </span> 5a/pop-to-edx
|
||||
<span id="L43" class="LineNr">43 </span> 59/pop-to-ecx
|
||||
<span id="L44" class="LineNr">44 </span> 58/pop-to-eax
|
||||
<span id="L45" class="LineNr">45 </span> <span class="subxS1Comment"># . epilogue</span>
|
||||
<span id="L46" class="LineNr">46 </span> 89/<- %esp 5/r32/ebp
|
||||
<span id="L47" class="LineNr">47 </span> 5d/pop-to-ebp
|
||||
<span id="L48" class="LineNr">48 </span> c3/return
|
||||
<span id="L49" class="LineNr">49 </span>
|
||||
<span id="L50" class="LineNr">50 </span><span class="subxMinorFunction">__check-mu-array-bounds:overflow</span>:
|
||||
<span id="L51" class="LineNr">51 </span> <span class="subxComment"># "fn " function-name ": offset to array '" array-name "' overflowed 32 bits\n"</span>
|
||||
<span id="L52" class="LineNr">52 </span> (<a href='116write-buffered.subx.html#L8'>write-buffered</a> <span class="SpecialChar"><a href='116write-buffered.subx.html#L209'>Stderr</a></span> <span class="Constant">"fn "</span>)
|
||||
<span id="L53" class="LineNr">53 </span> (<a href='116write-buffered.subx.html#L8'>write-buffered</a> <span class="SpecialChar"><a href='116write-buffered.subx.html#L209'>Stderr</a></span> *(ebp+0x14))
|
||||
<span id="L54" class="LineNr">54 </span> (<a href='116write-buffered.subx.html#L8'>write-buffered</a> <span class="SpecialChar"><a href='116write-buffered.subx.html#L209'>Stderr</a></span> <span class="Constant">": offset to array '"</span>)
|
||||
<span id="L55" class="LineNr">55 </span> (<a href='116write-buffered.subx.html#L8'>write-buffered</a> <span class="SpecialChar"><a href='116write-buffered.subx.html#L209'>Stderr</a></span> *(ebp+0x18))
|
||||
<span id="L56" class="LineNr">56 </span> (<a href='116write-buffered.subx.html#L8'>write-buffered</a> <span class="SpecialChar"><a href='116write-buffered.subx.html#L209'>Stderr</a></span> <span class="Constant">"' overflowed 32 bits\n"</span>)
|
||||
<span id="L57" class="LineNr">57 </span> (<a href='115write-byte.subx.html#L81'>flush</a> <span class="SpecialChar"><a href='116write-buffered.subx.html#L209'>Stderr</a></span>)
|
||||
<span id="L58" class="LineNr">58 </span> <span class="subxComment"># exit(1)</span>
|
||||
<span id="L59" class="LineNr">59 </span> bb/copy-to-ebx 1/imm32
|
||||
<span id="L60" class="LineNr">60 </span> e8/call syscall_exit/disp32
|
||||
<span id="L61" class="LineNr">61 </span>
|
||||
<span id="L62" class="LineNr">62 </span><span class="subxComment"># potential alternative</span>
|
||||
<span id="L63" class="LineNr">63 </span>
|
||||
<span id="L64" class="LineNr">64 </span><span class="CommentedCode">#? __bounds-check: # msg: (addr array byte)</span>
|
||||
<span id="L65" class="LineNr">65 </span><span class="CommentedCode">#? (write-buffered Stderr "abort: array bounds exceeded in fn ")</span>
|
||||
<span id="L66" class="LineNr">66 </span><span class="CommentedCode">#? 8b/-> *(esp+4) 0/r32/eax # we're going to abort, so just clobber away</span>
|
||||
<span id="L67" class="LineNr">67 </span><span class="CommentedCode">#? (write-buffered Stderr %eax)</span>
|
||||
<span id="L68" class="LineNr">68 </span><span class="CommentedCode">#? (write-buffered Stderr Newline)</span>
|
||||
<span id="L69" class="LineNr">69 </span><span class="CommentedCode">#? # exit(1)</span>
|
||||
<span id="L70" class="LineNr">70 </span><span class="CommentedCode">#? bb/copy-to-ebx 1/imm32</span>
|
||||
<span id="L71" class="LineNr">71 </span><span class="CommentedCode">#? e8/call syscall_exit/disp32</span>
|
||||
<span id="L72" class="LineNr">72 </span>
|
||||
<span id="L73" class="LineNr">73 </span><span class="subxComment"># to be called as follows:</span>
|
||||
<span id="L74" class="LineNr">74 </span><span class="subxComment"># var/reg <- index arr/rega: (addr array T), idx/regi: int</span>
|
||||
<span id="L75" class="LineNr">75 </span><span class="subxComment"># | if size-of(T) is 1, 2, 4 or 8</span>
|
||||
<span id="L76" class="LineNr">76 </span><span class="subxComment"># => # temporarily save array size to reg to check bounds</span>
|
||||
<span id="L77" class="LineNr">77 </span><span class="subxComment"># "8b/-> *" rega " " reg "/r32"</span>
|
||||
<span id="L78" class="LineNr">78 </span><span class="subxComment"># "c1/shift 5/subop/right %" reg " " log2(size-of(T)) "/imm32"</span>
|
||||
<span id="L79" class="LineNr">79 </span><span class="subxComment"># "3b/compare " reg "/r32 *" rega</span>
|
||||
<span id="L80" class="LineNr">80 </span><span class="subxComment"># "68/push \"" function "\"/imm32" # pass function name to error message</span>
|
||||
<span id="L81" class="LineNr">81 </span><span class="subxComment"># "0f 8d/jump-if->= __bounds_check/disp32"</span>
|
||||
<span id="L82" class="LineNr">82 </span><span class="subxComment"># "81 0/subop/add %esp 4/imm32" # drop function name</span>
|
||||
<span id="L83" class="LineNr">83 </span><span class="subxComment"># # actually save the index addr in reg</span>
|
||||
<span id="L84" class="LineNr">84 </span><span class="subxComment"># "8d/copy-address *(" rega "+" regi "<<" log2(size-of(T)) "+4) " reg "/r32"</span>
|
||||
</pre>
|
||||
</body>
|
||||
</html>
|
||||
<!-- vim: set foldmethod=manual : -->
|
||||
File diff suppressed because it is too large
Load Diff
|
|
@ -336,24 +336,28 @@ var/reg: (addr T) <span class="SpecialChar"><-</span> address var2: T
|
|||
=> <span class="Constant">"8d/copy-address *(ebp+"</span> var2.stack-offset <span class="Constant">") "</span> reg <span class="Constant">"/r32"</span>
|
||||
|
||||
<span class="muComment"># Array operations</span>
|
||||
(TODO: bounds-checking)
|
||||
|
||||
var/reg <span class="SpecialChar"><-</span> index arr/rega: (addr array T), idx/regi: int
|
||||
| if size-of(T) is <span class="Constant">4</span> or <span class="Constant">8</span>
|
||||
=> <span class="Constant">"8d/copy-address *("</span> rega <span class="Constant">"+"</span> regi <span class="Constant">"<<"</span> log2(size-of(T)) <span class="Constant">"+4) "</span> reg <span class="Constant">"/r32"</span>
|
||||
| if size-of(T) is <span class="Constant">1</span>, <span class="Constant">2</span>, <span class="Constant">4</span> or <span class="Constant">8</span>
|
||||
=> <span class="Constant">"(__check-mu-array-bounds *"</span> rega <span class="Constant">" %"</span> regi <span class="Constant">" "</span> size-of(T) <span class="Constant">")"</span>
|
||||
<span class="Constant">"8d/copy-address *("</span> rega <span class="Constant">"+"</span> regi <span class="Constant">"<<"</span> log2(size-of(T)) <span class="Constant">"+4) "</span> reg <span class="Constant">"/r32"</span>
|
||||
var/reg <span class="SpecialChar"><-</span> index arr: (array T len), idx/regi: int
|
||||
=> <span class="Constant">"8d/copy-address *(ebp+"</span> regi <span class="Constant">"<<"</span> log2(size-of(T)) <span class="Constant">"+"</span> (arr.stack-offset + <span class="Constant">4</span>) <span class="Constant">") "</span> reg <span class="Constant">"/r32"</span>
|
||||
=> <span class="Constant">"(__check-mu-array-bounds *(ebp+"</span> arr.stack-offset <span class="Constant">") %"</span> regi <span class="Constant">" "</span> size-of(T) <span class="Constant">")"</span>
|
||||
<span class="Constant">"8d/copy-address *(ebp+"</span> regi <span class="Constant">"<<"</span> log2(size-of(T)) <span class="Constant">"+"</span> (arr.stack-offset + <span class="Constant">4</span>) <span class="Constant">") "</span> reg <span class="Constant">"/r32"</span>
|
||||
var/reg <span class="SpecialChar"><-</span> index arr/rega: (addr array T), n
|
||||
=> <span class="Constant">"8d/copy-address *("</span> rega <span class="Constant">"+"</span> (n*size-of(T)+<span class="Constant">4</span>) <span class="Constant">") "</span> reg <span class="Constant">"/r32"</span>
|
||||
=> <span class="Constant">"(__check-mu-array-bounds *"</span> rega <span class="Constant">" "</span> n <span class="Constant">" "</span> size-of(T) <span class="Constant">")"</span>
|
||||
<span class="Constant">"8d/copy-address *("</span> rega <span class="Constant">"+"</span> (n*size-of(T)+<span class="Constant">4</span>) <span class="Constant">") "</span> reg <span class="Constant">"/r32"</span>
|
||||
var/reg <span class="SpecialChar"><-</span> index arr: (array T len), n
|
||||
=> <span class="Constant">"8d/copy-address *(ebp+"</span> (arr.stack-offset+<span class="Constant">4</span>+n*size-of(T)) <span class="Constant">") "</span> reg <span class="Constant">"/r32"</span>
|
||||
=> <span class="Constant">"(__check-mu-array-bounds *(ebp+"</span> arr.stack-offset <span class="Constant">") "</span> n <span class="Constant">" "</span> size-of(T) <span class="Constant">")"</span>
|
||||
<span class="Constant">"8d/copy-address *(ebp+"</span> (arr.stack-offset+<span class="Constant">4</span>+n*size-of(T)) <span class="Constant">") "</span> reg <span class="Constant">"/r32"</span>
|
||||
|
||||
var/reg: (offset T) <span class="SpecialChar"><-</span> compute-offset arr: (addr array T), idx/regi: int <span class="muComment"># arr can be in reg or mem</span>
|
||||
=> <span class="Constant">"69/multiply %"</span> regi <span class="Constant">" "</span> size-of(T) <span class="Constant">"/imm32 "</span> reg <span class="Constant">"/r32"</span>
|
||||
var/reg: (offset T) <span class="SpecialChar"><-</span> compute-offset arr: (addr array T), idx: int <span class="muComment"># arr can be in reg or mem</span>
|
||||
=> <span class="Constant">"69/multiply *(ebp+"</span> idx.stack-offset <span class="Constant">") "</span> size-of(T) <span class="Constant">"/imm32 "</span> reg <span class="Constant">"/r32"</span>
|
||||
var/reg <span class="SpecialChar"><-</span> index arr/rega: (addr array T), o/rego: offset
|
||||
=> <span class="Constant">"8d/copy-address *("</span> rega <span class="Constant">"+"</span> rego <span class="Constant">"+4) "</span> reg <span class="Constant">"/r32"</span>
|
||||
var/reg <span class="SpecialChar"><-</span> index arr/rega: (addr array T), o/rego: (offset T)
|
||||
=> <span class="Constant">"(__check-mu-array-bounds %"</span> rega <span class="Constant">" %"</span> rego <span class="Constant">" 1 \"" function-name "</span>\<span class="Constant">")"</span>
|
||||
<span class="Constant">"8d/copy-address *("</span> rega <span class="Constant">"+"</span> rego <span class="Constant">"+4) "</span> reg <span class="Constant">"/r32"</span>
|
||||
|
||||
Computing the length of an array is complex.
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue