diff options
Diffstat (limited to 'html/subx/examples/ex8.subx.html')
| -rw-r--r-- | html/subx/examples/ex8.subx.html | 32 |
1 files changed, 16 insertions, 16 deletions
diff --git a/html/subx/examples/ex8.subx.html b/html/subx/examples/ex8.subx.html index 65f5e09c..abb09b84 100644 --- a/html/subx/examples/ex8.subx.html +++ b/html/subx/examples/ex8.subx.html @@ -56,9 +56,9 @@ if ('onhashchange' in window) { <pre id='vimCodeElement'> <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 ex8.subx ex8</span> -<span id="L5" class="LineNr"> 5 </span><span class="Comment"># $ subx run ex8 abc de fghi</span> +<span id="L3" class="LineNr"> 3 </span><span class="Comment"># To run (from the subx directory):</span> +<span id="L4" class="LineNr"> 4 </span><span class="Comment"># $ subx translate examples/ex8.subx -o examples/ex8</span> +<span id="L5" class="LineNr"> 5 </span><span class="Comment"># $ subx run examples/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> @@ -74,36 +74,36 @@ if ('onhashchange' in window) { <span id="L18" class="LineNr">18 </span><span class="Comment"># instruction effective address operand displacement immediate</span> <span id="L19" class="LineNr">19 </span><span class="Comment"># op subop mod rm32 base index scale r32</span> <span id="L20" class="LineNr">20 </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="L21" class="LineNr">21 </span> <span class="Comment"># var s = argv[1] (EBX)</span> -<span id="L22" class="LineNr">22 </span> 8b/copy 1/mod/*+disp8 4/rm32/sib 4/base/ESP 4/index/none 3/r32/EBX 8/disp8 <span class="Delimiter"> . </span> <span class="Comment"># copy *(ESP+8) to EBX</span> -<span id="L23" class="LineNr">23 </span> <span class="Comment"># call ascii_length(EBX)</span> +<span id="L21" class="LineNr">21 </span> <span class="Comment"># prolog</span> +<span id="L22" class="LineNr">22 </span> 89/copy 3/mod/direct 5/rm32/EBP <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> 4/r32/ESP <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> <span class="Comment"># copy ESP to EBP</span> +<span id="L23" class="LineNr">23 </span> <span class="Comment"># call ascii_length(argv[1])</span> <span id="L24" class="LineNr">24 </span> <span class="Comment"># push args</span> -<span id="L25" class="LineNr">25 </span> 53/push-EBX +<span id="L25" class="LineNr">25 </span> ff 6/subop/push 1/mod/*+disp8 4/rm32/sib 5/base/EBP 4/index/none <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> 0x8/disp8 <span class="Delimiter"> . </span> <span class="Comment"># push *(EBP+8)</span> <span id="L26" class="LineNr">26 </span> <span class="Comment"># call</span> <span id="L27" class="LineNr">27 </span> e8/call ascii_length/disp32 <span id="L28" class="LineNr">28 </span> <span class="Comment"># discard args</span> -<span id="L29" class="LineNr">29 </span> 81 0/subop/add 3/mod/direct 4/rm32/ESP <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> 4/imm32 <span class="Comment"># add 4 to ESP</span> +<span id="L29" class="LineNr">29 </span> 81 0/subop/add 3/mod/direct 4/rm32/ESP <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> <span class="Delimiter"> . </span> 4/imm32 <span class="Comment"># add to ESP</span> <span id="L30" class="LineNr">30 </span> <span id="L31" class="LineNr">31 </span> <span class="Comment"># exit(EAX)</span> -<span id="L32" class="LineNr">32 </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="L33" class="LineNr">33 </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="L32" class="LineNr">32 </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="L33" class="LineNr">33 </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 to EAX</span> <span id="L34" class="LineNr">34 </span> cd/syscall 0x80/imm8 <span id="L35" class="LineNr">35 </span> <span id="L36" class="LineNr">36 </span>ascii_length: <span class="Comment"># (s)</span> <span id="L37" class="LineNr">37 </span> <span class="Comment"># initialize s (EDX)</span> -<span id="L38" class="LineNr">38 </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="L38" class="LineNr">38 </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="L39" class="LineNr">39 </span> <span class="Comment"># var result = 0 (EAX)</span> -<span id="L40" class="LineNr">40 </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="L40" class="LineNr">40 </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 to EAX</span> <span id="L41" class="LineNr">41 </span>$ascii_length_loop: <span id="L42" class="LineNr">42 </span> <span class="Comment"># var c = *s (ECX)</span> -<span id="L43" class="LineNr">43 </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="L43" class="LineNr">43 </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="L44" class="LineNr">44 </span> <span class="Comment"># if c == '\0' break</span> -<span id="L45" class="LineNr">45 </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="L45" class="LineNr">45 </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</span> <span id="L46" class="LineNr">46 </span> 74/jump-if-equal $ascii_length_ret/disp8 <span id="L47" class="LineNr">47 </span> <span class="Comment"># ++s</span> -<span id="L48" class="LineNr">48 </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="L48" class="LineNr">48 </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 to EDX</span> <span id="L49" class="LineNr">49 </span> <span class="Comment"># ++result</span> -<span id="L50" class="LineNr">50 </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="L50" class="LineNr">50 </span> 40/inc-EAX <span id="L51" class="LineNr">51 </span> <span class="Comment"># loop</span> <span id="L52" class="LineNr">52 </span> eb/jump $ascii_length_loop/disp8 <span id="L53" class="LineNr">53 </span>$ascii_length_ret: |