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| author | Kartik Agaram <vc@akkartik.com> | 2018-08-04 17:00:27 -0700 |
|---|---|---|
| committer | Kartik Agaram <vc@akkartik.com> | 2018-08-04 17:00:27 -0700 |
| commit | bb2b6ba7fd72bbebc3a4490d090f080e7b8628cc (patch) | |
| tree | 2a8e0697887f3028b3b9042b62fa57064537bd87 /html/subx/ex3.subx.html | |
| parent | 6cabcefe67d2cd0583b556129fe3d8c89cf0fcb8 (diff) | |
| download | mu-bb2b6ba7fd72bbebc3a4490d090f080e7b8628cc.tar.gz | |
4478
Diffstat (limited to 'html/subx/ex3.subx.html')
| -rw-r--r-- | html/subx/ex3.subx.html | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/html/subx/ex3.subx.html b/html/subx/ex3.subx.html new file mode 100644 index 00000000..c3dddcfb --- /dev/null +++ b/html/subx/ex3.subx.html @@ -0,0 +1,94 @@ +<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> +<html> +<head> +<meta http-equiv="content-type" content="text/html; charset=UTF-8"> +<title>Mu - subx/ex3.subx</title> +<meta name="Generator" content="Vim/7.4"> +<meta name="plugin-version" content="vim7.4_v2"> +<meta name="syntax" content="none"> +<meta name="settings" content="number_lines,use_css,pre_wrap,no_foldcolumn,expand_tabs,line_ids,prevent_copy="> +<meta name="colorscheme" content="minimal"> +<style type="text/css"> +<!-- +pre { white-space: pre-wrap; font-family: monospace; color: #aaaaaa; background-color: #080808; } +body { font-size: 12pt; font-family: monospace; color: #aaaaaa; background-color: #080808; } +a { color:#eeeeee; text-decoration: none; } +a:hover { text-decoration: underline; } +* { font-size: 12pt; font-size: 1em; } +.SalientComment { color: #00ffff; } +.LineNr { color: #444444; } +.Comment { color: #9090ff; } +.Comment a { color:#0000ee; text-decoration:underline; } +--> +</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; + } + 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();'> +<pre id='vimCodeElement'> +<span id="L1" class="LineNr"> 1 </span><span class="SalientComment">## add the first 10 numbers, and return the result in the exit code</span> +<span id="L2" class="LineNr"> 2 </span><span class="Comment">#</span> +<span id="L3" class="LineNr"> 3 </span><span class="Comment"># To run:</span> +<span id="L4" class="LineNr"> 4 </span><span class="Comment"># $ subx translate ex3.subx ex3</span> +<span id="L5" class="LineNr"> 5 </span><span class="Comment"># $ subx run ex3</span> +<span id="L6" class="LineNr"> 6 </span><span class="Comment"># Expected result:</span> +<span id="L7" class="LineNr"> 7 </span><span class="Comment"># $ echo $?</span> +<span id="L8" class="LineNr"> 8 </span><span class="Comment"># 55</span> +<span id="L9" class="LineNr"> 9 </span> +<span id="L10" class="LineNr">10 </span>== 0x08048054 <span class="Comment"># code segment, after leaving room for ELF header</span> +<span id="L11" class="LineNr">11 </span><span class="Comment"># instruction effective address operand displacement immediate</span> +<span id="L12" class="LineNr">12 </span><span class="Comment"># op subop mod rm32 base index scale r32</span> +<span id="L13" class="LineNr">13 </span><span class="Comment"># 1-3 bytes 3 bits 2 bits 3 bits 3 bits 3 bits 2 bits 2 bits 0/1/2/4 bytes 0/1/2/4 bytes</span> +<span id="L14" class="LineNr">14 </span> <span class="Comment"># result: EBX = 0</span> +<span id="L15" class="LineNr">15 </span> bb/copy 0/imm32 <span class="Comment"># copy 0 to EBX</span> +<span id="L16" class="LineNr">16 </span> <span class="Comment"># counter: ECX = 1</span> +<span id="L17" class="LineNr">17 </span> b9/copy 1/imm32 <span class="Comment"># copy 1 to ECX</span> +<span id="L18" class="LineNr">18 </span> +<span id="L19" class="LineNr">19 </span>loop: +<span id="L20" class="LineNr">20 </span> <span class="Comment"># while (counter <= 10)</span> +<span id="L21" class="LineNr">21 </span> 81 7/subop/compare 3/mod/direct 1/rm32/ecx 0xa/imm32 <span class="Comment"># compare ECX, 10/imm</span> +<span id="L22" class="LineNr">22 </span> 7f/jump-if exit/disp8 <span class="Comment"># jump-if-greater exit</span> +<span id="L23" class="LineNr">23 </span> <span class="Comment"># result += counter</span> +<span id="L24" class="LineNr">24 </span> 01/add 3/mod/direct 3/rm32/ebx 1/r32/ecx <span class="Comment"># add ECX to EBX</span> +<span id="L25" class="LineNr">25 </span> <span class="Comment"># ++counter</span> +<span id="L26" class="LineNr">26 </span> 81 0/subop/add 3/mod/direct 1/rm32/ecx 1/imm32 <span class="Comment"># add 1 to ECX</span> +<span id="L27" class="LineNr">27 </span> <span class="Comment"># loop</span> +<span id="L28" class="LineNr">28 </span> eb/jump loop/disp8 <span class="Comment"># jump loop</span> +<span id="L29" class="LineNr">29 </span> +<span id="L30" class="LineNr">30 </span>exit: +<span id="L31" class="LineNr">31 </span> <span class="Comment"># exit(EBX)</span> +<span id="L32" class="LineNr">32 </span> b8/copy 1/imm32 <span class="Comment"># copy 1 to EAX</span> +<span id="L33" class="LineNr">33 </span> cd/syscall 0x80/imm8 <span class="Comment"># int 80h</span> +<span id="L34" class="LineNr">34 </span> +<span id="L35" class="LineNr">35 </span><span class="Comment"># vim:ft=subx:nowrap</span> +</pre> +</body> +</html> +<!-- vim: set foldmethod=manual : --> |