diff options
Diffstat (limited to 'html/subx/examples/ex4.subx.html')
| -rw-r--r-- | html/subx/examples/ex4.subx.html | 63 |
1 files changed, 29 insertions, 34 deletions
diff --git a/html/subx/examples/ex4.subx.html b/html/subx/examples/ex4.subx.html index fda4338b..ba639cde 100644 --- a/html/subx/examples/ex4.subx.html +++ b/html/subx/examples/ex4.subx.html @@ -16,7 +16,6 @@ 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; } @@ -61,41 +60,37 @@ if ('onhashchange' in window) { <span id="L5" class="LineNr"> 5 </span><span class="Comment"># $ subx run examples/ex4</span> <span id="L6" class="LineNr"> 6 </span> <span id="L7" class="LineNr"> 7 </span>== code -<span id="L8" class="LineNr"> 8 </span><span class="Comment"># instruction effective address operand displacement immediate</span> -<span id="L9" class="LineNr"> 9 </span><span class="Comment"># op subop mod rm32 base index scale r32</span> -<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"># read(stdin, x, 1)</span> -<span id="L13" class="LineNr">13 </span> <span class="Comment"># fd = 0 (stdin)</span> -<span id="L14" class="LineNr">14 </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 to EBX</span> -<span id="L15" class="LineNr">15 </span> <span class="Comment"># initialize x (location to write result to)</span> -<span id="L16" class="LineNr">16 </span> b9/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> x/imm32 <span class="Comment"># copy to ECX</span> -<span id="L17" class="LineNr">17 </span> <span class="Comment"># size = 1 character</span> -<span id="L18" class="LineNr">18 </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 to EDX</span> -<span id="L19" class="LineNr">19 </span> <span class="Comment"># read(fd, x, size)</span> -<span id="L20" class="LineNr">20 </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 to EAX</span> -<span id="L21" class="LineNr">21 </span> cd/syscall 0x80/imm8 -<span id="L22" class="LineNr">22 </span> -<span id="L23" class="LineNr">23 </span> <span class="Comment"># write(stdout, x, 1)</span> -<span id="L24" class="LineNr">24 </span> <span class="Comment"># fd = 1 (stdout)</span> -<span id="L25" class="LineNr">25 </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 to EBX</span> -<span id="L26" class="LineNr">26 </span> <span class="Comment"># initialize x (location to read from)</span> -<span id="L27" class="LineNr">27 </span> b9/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> x/imm32 <span class="Comment"># copy to ECX</span> -<span id="L28" class="LineNr">28 </span> <span class="Comment"># size = 1 character</span> -<span id="L29" class="LineNr">29 </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 to EDX</span> -<span id="L30" class="LineNr">30 </span> <span class="Comment"># write(fd, x, size)</span> -<span id="L31" class="LineNr">31 </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 to EAX</span> -<span id="L32" class="LineNr">32 </span> cd/syscall 0x80/imm8 +<span id="L8" class="LineNr"> 8 </span><span class="Comment"># syscall(read, stdin, x, 1)</span> +<span id="L9" class="LineNr"> 9 </span> <span class="Comment"># fd = 0 (stdin)</span> +<span id="L10" class="LineNr">10 </span>bb/copy-to-EBX 0/imm32 +<span id="L11" class="LineNr">11 </span> <span class="Comment"># initialize x (location to write result to)</span> +<span id="L12" class="LineNr">12 </span>b9/copy-to-ECX x/imm32 +<span id="L13" class="LineNr">13 </span> <span class="Comment"># size = 1 character</span> +<span id="L14" class="LineNr">14 </span>ba/copy-to-EDX 1/imm32 +<span id="L15" class="LineNr">15 </span> <span class="Comment"># syscall</span> +<span id="L16" class="LineNr">16 </span>b8/copy-to-EAX 3/imm32/read +<span id="L17" class="LineNr">17 </span>cd/syscall 0x80/imm8 +<span id="L18" class="LineNr">18 </span> +<span id="L19" class="LineNr">19 </span><span class="Comment"># syscall(write, stdout, x, 1)</span> +<span id="L20" class="LineNr">20 </span> <span class="Comment"># fd = 1 (stdout)</span> +<span id="L21" class="LineNr">21 </span>bb/copy-to-EBX 1/imm32 +<span id="L22" class="LineNr">22 </span> <span class="Comment"># initialize x (location to read from)</span> +<span id="L23" class="LineNr">23 </span>b9/copy-to-ECX x/imm32 +<span id="L24" class="LineNr">24 </span> <span class="Comment"># size = 1 character</span> +<span id="L25" class="LineNr">25 </span>ba/copy-to-EDX 1/imm32 +<span id="L26" class="LineNr">26 </span> <span class="Comment"># syscall</span> +<span id="L27" class="LineNr">27 </span>b8/copy-to-EAX 4/imm32/write +<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"># syscall(exit, EBX)</span> +<span id="L31" class="LineNr">31 </span>b8/copy-to-EAX 1/imm32/exit +<span id="L32" class="LineNr">32 </span>cd/syscall 0x80/imm8 <span id="L33" class="LineNr">33 </span> -<span id="L34" class="LineNr">34 </span> <span class="Comment"># exit(EBX)</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> 1/imm32/exit <span class="Comment"># copy to EAX</span> -<span id="L36" class="LineNr">36 </span> cd/syscall 0x80/imm8 +<span id="L34" class="LineNr">34 </span>== data +<span id="L35" class="LineNr">35 </span>x: +<span id="L36" class="LineNr">36 </span> 00 00 00 00 <span class="Comment"># space for read() to write to</span> <span id="L37" class="LineNr">37 </span> -<span id="L38" class="LineNr">38 </span>== data -<span id="L39" class="LineNr">39 </span>x: -<span id="L40" class="LineNr">40 </span> 00 00 00 00 <span class="Comment"># space for read() to write to</span> -<span id="L41" class="LineNr">41 </span> -<span id="L42" class="LineNr">42 </span><span class="Comment"># vim:ft=subx:nowrap</span> +<span id="L38" class="LineNr">38 </span><span class="Comment"># vim:nowrap:textwidth=0</span> </pre> </body> </html> |