diff options
Diffstat (limited to 'html/subx/examples/ex8.subx.html')
| -rw-r--r-- | html/subx/examples/ex8.subx.html | 21 |
1 files changed, 11 insertions, 10 deletions
diff --git a/html/subx/examples/ex8.subx.html b/html/subx/examples/ex8.subx.html index 62c118c6..e091fe9b 100644 --- a/html/subx/examples/ex8.subx.html +++ b/html/subx/examples/ex8.subx.html @@ -19,6 +19,7 @@ a:hover { text-decoration: underline; } .Delimiter { color: #800080; } .Comment { color: #9090ff; } .Comment a { color:#0000ee; text-decoration:underline; } +.SalientComment { color: #00ffff; } --> </style> @@ -53,11 +54,11 @@ if ('onhashchange' in window) { </head> <body onload='JumpToLine();'> <pre id='vimCodeElement'> -<span id="L1" class="LineNr"> 1 </span><span class="Comment"># Example reading commandline arguments: compute length of first arg.</span> +<span id="L1" class="LineNr"> 1 </span><span class="SalientComment">## Example reading commandline arguments: compute length of first arg.</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 ex9.subx ex9</span> -<span id="L5" class="LineNr"> 5 </span><span class="Comment"># $ subx run ex9 abc de fghi</span> +<span id="L4" class="LineNr"> 4 </span><span class="Comment"># $ subx translate ex8.subx ex8</span> +<span id="L5" class="LineNr"> 5 </span><span class="Comment"># $ subx run ex8 abc de fghi</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"># 3 # length of 'abc'</span> @@ -82,7 +83,7 @@ if ('onhashchange' in window) { <span id="L27" class="LineNr">27 </span> <span class="Comment"># push args</span> <span id="L28" class="LineNr">28 </span> 53/push <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> <span class="Comment"># push EBX</span> <span id="L29" class="LineNr">29 </span> <span class="Comment"># call</span> -<span id="L30" class="LineNr">30 </span> e8/call <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> ascii_length/disp32 +<span id="L30" class="LineNr">30 </span> e8/call ascii_length/disp32 <span id="L31" class="LineNr">31 </span> <span class="Comment"># discard args</span> <span id="L32" class="LineNr">32 </span> 5a/pop <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> <span class="Comment"># pop into EDX</span> <span id="L33" class="LineNr">33 </span> <span class="Comment"># clean up after call</span> @@ -92,26 +93,26 @@ if ('onhashchange' in window) { <span id="L37" class="LineNr">37 </span> <span class="Comment"># exit(EAX)</span> <span id="L38" class="LineNr">38 </span> 89/copy 3/mod/direct 3/rm32/EBX <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> 0/r32/EAX <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> <span class="Comment"># copy EAX to EBX</span> <span id="L39" class="LineNr">39 </span> b8/copy <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> 1/imm32/exit <span class="Comment"># copy 1 to EAX</span> -<span id="L40" class="LineNr">40 </span> cd/syscall <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> 0x80/imm8 <span class="Comment"># int 80h</span> +<span id="L40" class="LineNr">40 </span> cd/syscall 0x80/imm8 <span id="L41" class="LineNr">41 </span> <span id="L42" class="LineNr">42 </span>ascii_length: <span class="Comment"># (s)</span> <span id="L43" class="LineNr">43 </span> <span class="Comment"># initialize s (EDX)</span> <span id="L44" class="LineNr">44 </span> 8b/copy 1/mod/*+disp8 4/rm32/sib 4/base/ESP 4/index/none 2/r32/EDX 4/disp8 <span class="Comment"># copy *(ESP+4) to EDX</span> <span id="L45" class="LineNr">45 </span> <span class="Comment"># var result = 0 (EAX)</span> -<span id="L46" class="LineNr">46 </span> b8/copy <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> 0/imm32 <span class="Comment"># copy 1 to EAX</span> -<span id="L47" class="LineNr">47 </span>$al_loop: +<span id="L46" class="LineNr">46 </span> b8/copy <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> 0/imm32 <span class="Comment"># copy 0 to EAX</span> +<span id="L47" class="LineNr">47 </span>$ascii_length_loop: <span id="L48" class="LineNr">48 </span> <span class="Comment"># var c = *s (ECX)</span> <span id="L49" class="LineNr">49 </span> 8a/copy 0/mod/* 2/rm32/EDX <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> 1/r32/ECX <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> <span class="Comment"># copy byte at *EDX to lower byte of ECX</span> <span id="L50" class="LineNr">50 </span> <span class="Comment"># if c == '\0' break</span> <span id="L51" class="LineNr">51 </span> 81 7/subop/compare 3/mod/direct 1/rm32/ECX <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> 0/imm32 <span class="Comment"># compare ECX with 0</span> -<span id="L52" class="LineNr">52 </span> 74/jump-if-zero <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> $al_ret/disp8 <span class="Comment"># jump if equal</span> +<span id="L52" class="LineNr">52 </span> 74/jump-if-equal $ascii_length_ret/disp8 <span id="L53" class="LineNr">53 </span> <span class="Comment"># ++s</span> <span id="L54" class="LineNr">54 </span> 81 0/subop/add 3/mod/direct 2/rm32/EDX <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> 1/imm32 <span class="Comment"># add 1 to EDX</span> <span id="L55" class="LineNr">55 </span> <span class="Comment"># ++result</span> <span id="L56" class="LineNr">56 </span> 81 0/subop/add 3/mod/direct 0/rm32/EAX <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> 1/imm32 <span class="Comment"># add 1 to EAX</span> <span id="L57" class="LineNr">57 </span> <span class="Comment"># loop</span> -<span id="L58" class="LineNr">58 </span> eb/jump <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> $al_loop/disp8 <span class="Comment"># jump $al_loop</span> -<span id="L59" class="LineNr">59 </span>$al_ret: +<span id="L58" class="LineNr">58 </span> eb/jump $ascii_length_loop/disp8 +<span id="L59" class="LineNr">59 </span>$ascii_length_ret: <span id="L60" class="LineNr">60 </span> <span class="Comment"># return (result in EAX)</span> <span id="L61" class="LineNr">61 </span> c3/return </pre> |