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author | Kartik Agaram <vc@akkartik.com> | 2018-09-23 22:38:16 -0700 |
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committer | Kartik Agaram <vc@akkartik.com> | 2018-09-23 22:38:16 -0700 |
commit | 37d53a70958bfe5b1d7946229af9c12f0b865abc (patch) | |
tree | af209b4fed1411344ad5aa6ead0e168c718b54b5 /html/subx/examples/ex5.subx.html | |
parent | 76cb753a49974f6bb5a836a52445adf97de4a7cc (diff) | |
download | mu-37d53a70958bfe5b1d7946229af9c12f0b865abc.tar.gz |
4512
Diffstat (limited to 'html/subx/examples/ex5.subx.html')
-rw-r--r-- | html/subx/examples/ex5.subx.html | 64 |
1 files changed, 31 insertions, 33 deletions
diff --git a/html/subx/examples/ex5.subx.html b/html/subx/examples/ex5.subx.html index aa4f9761..7bd76e98 100644 --- a/html/subx/examples/ex5.subx.html +++ b/html/subx/examples/ex5.subx.html @@ -16,6 +16,7 @@ a { color:#eeeeee; text-decoration: none; } a:hover { text-decoration: underline; } * { font-size: 12pt; font-size: 1em; } .LineNr { color: #444444; } +.Delimiter { color: #800080; } .Comment { color: #9090ff; } .Comment a { color:#0000ee; text-decoration:underline; } .SalientComment { color: #00ffff; } @@ -65,39 +66,36 @@ if ('onhashchange' in window) { <span id="L10" class="LineNr">10 </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="L11" class="LineNr">11 </span> <span id="L12" class="LineNr">12 </span><span class="Comment"># main:</span> -<span id="L13" class="LineNr">13 </span> <span class="Comment"># prolog</span> -<span id="L14" class="LineNr">14 </span> 55/push <span class="Comment"># push EBP</span> -<span id="L15" class="LineNr">15 </span> 89/copy 3/mod/direct 5/rm32/EBP 4/r32/ESP <span class="Comment"># copy ESP to EBP</span> -<span id="L16" class="LineNr">16 </span> <span class="Comment"># allocate x on the stack</span> -<span id="L17" class="LineNr">17 </span> 81 5/subop/subtract 3/mod/direct 4/rm32/ESP 4/imm32 <span class="Comment"># subtract 4 bytes from ESP</span> -<span id="L18" class="LineNr">18 </span> -<span id="L19" class="LineNr">19 </span> <span class="Comment"># read(stdin, x, 1)</span> -<span id="L20" class="LineNr">20 </span> <span class="Comment"># fd = 0 (stdin)</span> -<span id="L21" class="LineNr">21 </span> bb/copy 0/imm32 <span class="Comment"># copy 0 to EBX</span> -<span id="L22" class="LineNr">22 </span> <span class="Comment"># initialize x (location to write result to)</span> -<span id="L23" class="LineNr">23 </span> 89/copy 3/mod/direct 1/rm32/ECX 5/r32/EBP <span class="Comment"># copy EBP to ECX</span> -<span id="L24" class="LineNr">24 </span> <span class="Comment"># size = 1 character</span> -<span id="L25" class="LineNr">25 </span> ba/copy 1/imm32 <span class="Comment"># copy 1 to EDX</span> -<span id="L26" class="LineNr">26 </span> <span class="Comment"># read(fd, x, size)</span> -<span id="L27" class="LineNr">27 </span> b8/copy 3/imm32/read <span class="Comment"># copy 3 to EAX</span> -<span id="L28" class="LineNr">28 </span> cd/syscall 0x80/imm8 -<span id="L29" class="LineNr">29 </span> -<span id="L30" class="LineNr">30 </span> <span class="Comment"># write(stdout, x, 1)</span> -<span id="L31" class="LineNr">31 </span> <span class="Comment"># fd = 1 (stdout)</span> -<span id="L32" class="LineNr">32 </span> bb/copy 1/imm32 <span class="Comment"># copy 1 to EBX</span> -<span id="L33" class="LineNr">33 </span> <span class="Comment"># initialize x (location to read from)</span> -<span id="L34" class="LineNr">34 </span> 89/copy 3/mod/direct 1/rm32/ECX 5/r32/EBP <span class="Comment"># copy EBP to ECX</span> -<span id="L35" class="LineNr">35 </span> <span class="Comment"># size = 1 character</span> -<span id="L36" class="LineNr">36 </span> ba/copy 1/imm32 <span class="Comment"># copy 1 to EDX</span> -<span id="L37" class="LineNr">37 </span> <span class="Comment"># write(fd, x, size)</span> -<span id="L38" class="LineNr">38 </span> b8/copy 4/imm32/write <span class="Comment"># copy 4 to EAX</span> -<span id="L39" class="LineNr">39 </span> cd/syscall 0x80/imm8 -<span id="L40" class="LineNr">40 </span> -<span id="L41" class="LineNr">41 </span> <span class="Comment"># exit(EBX)</span> -<span id="L42" class="LineNr">42 </span> b8/copy 1/imm32/exit <span class="Comment"># copy 1 to EAX</span> -<span id="L43" class="LineNr">43 </span> cd/syscall 0x80/imm8 -<span id="L44" class="LineNr">44 </span> -<span id="L45" class="LineNr">45 </span><span class="Comment"># vim:ft=subx:nowrap</span> +<span id="L13" class="LineNr">13 </span> <span class="Comment"># allocate x on the stack</span> +<span id="L14" class="LineNr">14 </span> 81 5/subop/subtract 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"># subtract 4 bytes from ESP</span> +<span id="L15" class="LineNr">15 </span> +<span id="L16" class="LineNr">16 </span> <span class="Comment"># read(stdin, x, 1)</span> +<span id="L17" class="LineNr">17 </span> <span class="Comment"># fd = 0 (stdin)</span> +<span id="L18" class="LineNr">18 </span> bb/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 EBX</span> +<span id="L19" class="LineNr">19 </span> <span class="Comment"># initialize x (location to write result to)</span> +<span id="L20" class="LineNr">20 </span> 8d/copy-address 1/mod/*+disp8 4/rm32/sib 4/base/ESP 4/index/none 1/r32/ECX 4/disp8 <span class="Delimiter"> . </span> <span class="Comment"># copy ESP+4 to ECX</span> +<span id="L21" class="LineNr">21 </span> <span class="Comment"># size = 1 character</span> +<span id="L22" class="LineNr">22 </span> ba/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 <span class="Comment"># copy 1 to EDX</span> +<span id="L23" class="LineNr">23 </span> <span class="Comment"># read(fd, x, size)</span> +<span id="L24" class="LineNr">24 </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> 3/imm32/read <span class="Comment"># copy 3 to EAX</span> +<span id="L25" class="LineNr">25 </span> cd/syscall 0x80/imm8 +<span id="L26" class="LineNr">26 </span> +<span id="L27" class="LineNr">27 </span> <span class="Comment"># write(stdout, x, 1)</span> +<span id="L28" class="LineNr">28 </span> <span class="Comment"># fd = 1 (stdout)</span> +<span id="L29" class="LineNr">29 </span> bb/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 <span class="Comment"># copy 1 to EBX</span> +<span id="L30" class="LineNr">30 </span> <span class="Comment"># initialize x (location to read from)</span> +<span id="L31" class="LineNr">31 </span> 8d/copy-address 1/mod/*+disp8 4/rm32/sib 4/base/ESP 4/index/none 1/r32/ECX 4/disp8 <span class="Delimiter"> . </span> <span class="Comment"># copy ESP+4 to ECX</span> +<span id="L32" class="LineNr">32 </span> <span class="Comment"># size = 1 character</span> +<span id="L33" class="LineNr">33 </span> ba/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 <span class="Comment"># copy 1 to EDX</span> +<span id="L34" class="LineNr">34 </span> <span class="Comment"># write(fd, x, size)</span> +<span id="L35" class="LineNr">35 </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> 4/imm32/write <span class="Comment"># copy 4 to EAX</span> +<span id="L36" class="LineNr">36 </span> cd/syscall 0x80/imm8 +<span id="L37" class="LineNr">37 </span> +<span id="L38" class="LineNr">38 </span> <span class="Comment"># exit(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 0x80/imm8 +<span id="L41" class="LineNr">41 </span> +<span id="L42" class="LineNr">42 </span><span class="Comment"># vim:ft=subx:nowrap</span> </pre> </body> </html> |