death/webasm.html Secret

## webasm.html
<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf8">
    <title>webasm</title>
  </head>
  <body>
    <pre id="stdout"></pre>
    <script type="text/webasm">
     mov ah, 09h
     lea dx, message
     int 21h
     mov ah, 09h
     lea dx, moar
     int 21h
     int 20h

     message db 'Hello world$'
     moar db ' and good night$'
    </script>
    <script type="text/javascript">
      !function(){"use strict";function r(r){return r.match(/[a-zA-Z]/)}function t(r){return r.match(/[0-9]/)}function e(e){return r(e)||t(e)}function n(r,t){for(var n=t;n<r.length&&e(r[n]);)n++;return[{type:"symbol",value:r.substring(t,n)},n]}function o(r,e){for(var n=e;n<r.length&&t(r[n]);)n++;var o=10,a=n;n<r.length&&r[n].match(/[hH]/)&&(o=16,a++);var u=parseInt(r.substring(e,n),o);return[{type:"number",value:u},a]}function a(r,t){for(var e=t+1;e<r.length&&"'"!==r[e];)e++;return[{type:"string",value:r.substring(t+1,e)},e+1]}function u(e,u){for(var i=u;i<e.length&&e[i].match(/\s/);)i++;if(i===e.length)return[{type:"end"},i];if(r(e[i]))return n(e,i);if(t(e[i]))return o(e,i);if(","===e[i])return[{type:"comma"},i+1];if("'"===e[i])return a(e,i);throw new Error("unmunchable: "+e.substr(i))}function i(r){for(var t=[],e=0;e<r.length;){var n=u(r,e);t.push(n[0]),e=n[1]}return t}function s(r){function t(){return o>=r.length}function e(){return r[o++]}function n(t){if(r[o].type!==t)throw new Error("expected "+t+" but got "+r[o].type);o++}for(var o=0,a=[],u={},i=[];!t();){var s=e();switch(s.type){case"symbol":if(s.value.match(/mov|lea/i)){var c=e();n("comma");var f=e();a.push({op:s.value,target:c,source:f})}else if(s.value.match(/int/i)){var l=e();a.push({op:s.value,n:l})}else{n("symbol");var h=e();u[s.value]=i.length,i.push(h)}break;case"number":case"string":case"comma":throw new Error("bare "+s.type);case"end":break;default:throw new Error("unknown token type: "+s.type)}}return{instructions:a,offsets:u,memory:i}}function c(r,t,e,n){switch(r.op){case"mov":switch(r.target.value){case"ah":n.ax=r.source.value<<8|255&n.ax;break;default:throw new Error("unknown reg "+r.target.value)}n.ip++;break;case"lea":switch(r.target.value){case"dx":n.dx=t[r.source.value];break;default:throw new Error("unknown reg "+r.target.value)}n.ip++;break;case"int":switch(r.n.value){case 32:return void(n.ip=-1);case 33:switch(n.ax>>8){case 9:h(e[n.dx].value,"$");break;default:throw new Error("unknown int21h ah "+n.ax>>8)}break;default:throw new Error("unknown int "+r.n)}n.ip++;break;default:throw new Error("unknown op "+r.op)}}function f(r){for(var t={ax:0,dx:0,ip:0};t.ip>=0&&t.ip<r.instructions.length;)c(r.instructions[t.ip],r.offsets,r.memory,t)}function l(r){window.stdout.innerHTML=window.stdout.innerHTML+r+"\n"}function h(r,t){var e=r.indexOf(t);if(-1===e)throw new Error("oh noes, overflow");window.stdout.innerHTML=window.stdout.innerHTML+r.substr(0,e)}function w(r){try{f(s(i(r)))}catch(t){l(t.toString())}}for(var v=document.querySelectorAll('script[type="text/webasm"]'),p=0;p<v.length;p++)w(v[p].textContent)}();
      </script>
  </body>
</html>
	<!DOCTYPE html>
	<html>
	<head>
	<meta charset="utf8">
	<title>webasm</title>
	</head>
	<body>
	<pre id="stdout"></pre>
	<script type="text/webasm">
	mov ah, 09h
	lea dx, message
	int 21h
	mov ah, 09h
	lea dx, moar
	int 21h
	int 20h

	message db 'Hello world$'
	moar db ' and good night$'
	</script>
	<script type="text/javascript">
	!function(){"use strict";function r(r){return r.match(/[a-zA-Z]/)}function t(r){return r.match(/[0-9]/)}function e(e){return r(e)\|\|t(e)}function n(r,t){for(var n=t;n<r.length&&e(r[n]);)n++;return[{type:"symbol",value:r.substring(t,n)},n]}function o(r,e){for(var n=e;n<r.length&&t(r[n]);)n++;var o=10,a=n;n<r.length&&r[n].match(/[hH]/)&&(o=16,a++);var u=parseInt(r.substring(e,n),o);return[{type:"number",value:u},a]}function a(r,t){for(var e=t+1;e<r.length&&"'"!==r[e];)e++;return[{type:"string",value:r.substring(t+1,e)},e+1]}function u(e,u){for(var i=u;i<e.length&&e[i].match(/\s/);)i++;if(i===e.length)return[{type:"end"},i];if(r(e[i]))return n(e,i);if(t(e[i]))return o(e,i);if(","===e[i])return[{type:"comma"},i+1];if("'"===e[i])return a(e,i);throw new Error("unmunchable: "+e.substr(i))}function i(r){for(var t=[],e=0;e<r.length;){var n=u(r,e);t.push(n[0]),e=n[1]}return t}function s(r){function t(){return o>=r.length}function e(){return r[o++]}function n(t){if(r[o].type!==t)throw new Error("expected "+t+" but got "+r[o].type);o++}for(var o=0,a=[],u={},i=[];!t();){var s=e();switch(s.type){case"symbol":if(s.value.match(/mov\|lea/i)){var c=e();n("comma");var f=e();a.push({op:s.value,target:c,source:f})}else if(s.value.match(/int/i)){var l=e();a.push({op:s.value,n:l})}else{n("symbol");var h=e();u[s.value]=i.length,i.push(h)}break;case"number":case"string":case"comma":throw new Error("bare "+s.type);case"end":break;default:throw new Error("unknown token type: "+s.type)}}return{instructions:a,offsets:u,memory:i}}function c(r,t,e,n){switch(r.op){case"mov":switch(r.target.value){case"ah":n.ax=r.source.value<<8\|255&n.ax;break;default:throw new Error("unknown reg "+r.target.value)}n.ip++;break;case"lea":switch(r.target.value){case"dx":n.dx=t[r.source.value];break;default:throw new Error("unknown reg "+r.target.value)}n.ip++;break;case"int":switch(r.n.value){case 32:return void(n.ip=-1);case 33:switch(n.ax>>8){case 9:h(e[n.dx].value,"$");break;default:throw new Error("unknown int21h ah "+n.ax>>8)}break;default:throw new Error("unknown int "+r.n)}n.ip++;break;default:throw new Error("unknown op "+r.op)}}function f(r){for(var t={ax:0,dx:0,ip:0};t.ip>=0&&t.ip<r.instructions.length;)c(r.instructions[t.ip],r.offsets,r.memory,t)}function l(r){window.stdout.innerHTML=window.stdout.innerHTML+r+"\n"}function h(r,t){var e=r.indexOf(t);if(-1===e)throw new Error("oh noes, overflow");window.stdout.innerHTML=window.stdout.innerHTML+r.substr(0,e)}function w(r){try{f(s(i(r)))}catch(t){l(t.toString())}}for(var v=document.querySelectorAll('script[type="text/webasm"]'),p=0;p<v.length;p++)w(v[p].textContent)}();
	</script>
	</body>
	</html>