diff options
Diffstat (limited to 'html/mu-init.subx.html')
| -rw-r--r-- | html/mu-init.subx.html | 55 |
1 files changed, 46 insertions, 9 deletions
diff --git a/html/mu-init.subx.html b/html/mu-init.subx.html index 324210e4..ef844eec 100644 --- a/html/mu-init.subx.html +++ b/html/mu-init.subx.html @@ -17,6 +17,8 @@ a { color:inherit; } .subxComment { color: #005faf; } .LineNr { } .SpecialChar { color: #d70000; } +.Constant { color: #008787; } +.subxH1Comment { color: #005faf; text-decoration: underline; } --> </style> @@ -57,7 +59,7 @@ if ('onhashchange' in window) { <span id="L3" class="LineNr"> 3 </span><span class="subxComment"># See translate_mu for how this file is used.</span> <span id="L4" class="LineNr"> 4 </span><span class="subxComment">#</span> <span id="L5" class="LineNr"> 5 </span><span class="subxComment"># Mu programs start at a function called 'main' with this signature:</span> -<span id="L6" class="LineNr"> 6 </span><span class="subxComment"># fn main args: (addr array kernel-string) -> exit-status/ebx: int</span> +<span id="L6" class="LineNr"> 6 </span><span class="subxComment"># fn main args: (addr array (addr array byte)) -> exit-status/ebx: int</span> <span id="L7" class="LineNr"> 7 </span><span class="subxComment"># If your program doesn't need commandline arguments you can drop it:</span> <span id="L8" class="LineNr"> 8 </span><span class="subxComment"># fn main -> exit-status/ebx: int</span> <span id="L9" class="LineNr"> 9 </span><span class="subxComment">#</span> @@ -69,14 +71,49 @@ if ('onhashchange' in window) { <span id="L15" class="LineNr">15 </span><span class="SpecialChar">Entry</span>: <span id="L16" class="LineNr">16 </span> <span class="subxComment"># we don't use ebp in Entry; just initialize it</span> <span id="L17" class="LineNr">17 </span> bd/copy-to-ebp 0/imm32 -<span id="L18" class="LineNr">18 </span> <span class="subxComment"># var args/eax: (addr array kernel-string)</span> -<span id="L19" class="LineNr">19 </span> 89/<- %eax 4/r32/esp -<span id="L20" class="LineNr">20 </span> <span class="subxComment"># initialize the heap</span> -<span id="L21" class="LineNr">21 </span> (<a href='053new-segment.subx.html#L41'>new-segment</a> *<span class="SpecialChar"><a href='069allocate.subx.html#L29'>Heap-size</a></span> <span class="SpecialChar"><a href='069allocate.subx.html#L22'>Heap</a></span>) -<span id="L22" class="LineNr">22 </span> <span class="subxComment"># run Mu program</span> -<span id="L23" class="LineNr">23 </span> (<a href='mu-init-test.subx.html#L7'>main</a> %eax) -<span id="L24" class="LineNr">24 </span> <span class="subxComment"># exit</span> -<span id="L25" class="LineNr">25 </span> (syscall_exit) +<span id="L18" class="LineNr">18 </span> <span class="subxH1Comment"># - save argc and argv</span> +<span id="L19" class="LineNr">19 </span> <span class="subxComment"># var argc-and-argv/esi</span> +<span id="L20" class="LineNr">20 </span> 89/<- %esi 4/r32/esp +<span id="L21" class="LineNr">21 </span><span class="Constant">$Entry:initialize-heap</span>: +<span id="L22" class="LineNr">22 </span> <span class="subxH1Comment"># - initialize the heap</span> +<span id="L23" class="LineNr">23 </span> (<a href='053new-segment.subx.html#L41'>new-segment</a> *<span class="SpecialChar"><a href='069allocate.subx.html#L34'>Heap-size</a></span> <span class="SpecialChar"><a href='069allocate.subx.html#L27'>Heap</a></span>) +<span id="L24" class="LineNr">24 </span><span class="Constant">$Entry:initialize-args</span>: +<span id="L25" class="LineNr">25 </span> <span class="subxH1Comment"># - convert argv from null-terminated 'kernel' strings to length-prefixed Mu strings</span> +<span id="L26" class="LineNr">26 </span> <span class="subxComment"># var argc/edx: int</span> +<span id="L27" class="LineNr">27 </span> 8b/-> *esi 2/r32/edx +<span id="L28" class="LineNr">28 </span> <span class="subxComment"># argc is in words; convert it to bytes</span> +<span id="L29" class="LineNr">29 </span> c1/shift 4/subop/left %edx 2/imm8 +<span id="L30" class="LineNr">30 </span> <span class="subxComment"># var tmp/eax: handle</span> +<span id="L31" class="LineNr">31 </span> 68/push 0/imm32 +<span id="L32" class="LineNr">32 </span> 68/push 0/imm32 +<span id="L33" class="LineNr">33 </span> 89/<- %eax 4/r32/esp +<span id="L34" class="LineNr">34 </span> <span class="subxComment"># var args/edi: (addr array (addr array byte))</span> +<span id="L35" class="LineNr">35 </span> (<a href='069allocate.subx.html#L557'>allocate-array</a> <span class="SpecialChar"><a href='069allocate.subx.html#L27'>Heap</a></span> %edx %eax) +<span id="L36" class="LineNr">36 </span> 8b/-> *(eax+4) 7/r32/edi +<span id="L37" class="LineNr">37 </span> <span class="subxComment"># var curr/ecx: (addr kernel-string) = argv</span> +<span id="L38" class="LineNr">38 </span> 8d/copy-address *(esi+4) 1/r32/ecx +<span id="L39" class="LineNr">39 </span> <span class="subxComment"># var max/edx: (addr kernel-string) = argv+4+argc</span> +<span id="L40" class="LineNr">40 </span> 8d/copy-address *(ecx+edx) 2/r32/edx +<span id="L41" class="LineNr">41 </span> <span class="subxComment"># var dest/esi: (addr (addr array byte)) = args+4</span> +<span id="L42" class="LineNr">42 </span> 8d/copy-address *(edi+4) 6/r32/esi +<span id="L43" class="LineNr">43 </span> { +<span id="L44" class="LineNr">44 </span> <span class="subxComment"># if (curr >= max) break</span> +<span id="L45" class="LineNr">45 </span> 39/compare %ecx 2/r32/edx +<span id="L46" class="LineNr">46 </span> 73/jump-if-addr>= <span class="Constant">break</span>/disp8 +<span id="L47" class="LineNr">47 </span> <span class="subxComment"># *dest = kernel-string-to-string(*curr)</span> +<span id="L48" class="LineNr">48 </span> (<a href='102kernel-string.subx.html#L7'>kernel-string-to-string</a> <span class="SpecialChar"><a href='069allocate.subx.html#L27'>Heap</a></span> *ecx) <span class="subxComment"># => eax</span> +<span id="L49" class="LineNr">49 </span> 89/<- *esi 0/r32/eax +<span id="L50" class="LineNr">50 </span> <span class="subxComment"># curr += 4</span> +<span id="L51" class="LineNr">51 </span> 81 0/subop/add %ecx 4/imm32 +<span id="L52" class="LineNr">52 </span> <span class="subxComment"># dest += 4</span> +<span id="L53" class="LineNr">53 </span> 81 0/subop/add %esi 4/imm32 +<span id="L54" class="LineNr">54 </span> <span class="subxComment">#</span> +<span id="L55" class="LineNr">55 </span> eb/jump <span class="Constant">loop</span>/disp8 +<span id="L56" class="LineNr">56 </span> } +<span id="L57" class="LineNr">57 </span> <span class="subxH1Comment"># - run Mu program</span> +<span id="L58" class="LineNr">58 </span> (<a href='mu-init-test.subx.html#L7'>main</a> %edi) <span class="subxComment"># => ebx</span> +<span id="L59" class="LineNr">59 </span> <span class="subxH1Comment"># - exit</span> +<span id="L60" class="LineNr">60 </span> (syscall_exit) </pre> </body> </html> |