jslinux.js

"use strict";var term,pc,boot_start_time;function focus_on(){var el=document.getElementById("holder");el.focus();el.style.backgroundColor="yellow";}
function term_start()
{term=new Term(parseInt(defaultPreset["columns"]),parseInt(defaultPreset["rows"]),term_handler);term.open();}
function term_handler(str)
{pc.serial.send_chars(str);}
function clipboard_set(val)
{var el;el=document.getElementById("text_clipboard");el.value=val;}
function clipboard_get()
{var el;el=document.getElementById("text_clipboard");return el.value;}
function clear_clipboard()
{var el;el=document.getElementById("text_clipboard");el.value="";}
function get_boot_time()
{return(+new Date())-boot_start_time;}
var binaries=[false,false,false];function loadbinary(url,slot){var req,binary_array,len,typed_arrays_exist;req=new XMLHttpRequest();req.open('GET',url,true);typed_arrays_exist=('ArrayBuffer'in window&&'Uint8Array'in window);if(typed_arrays_exist&&'mozResponseType'in req){req.mozResponseType='arraybuffer';}else if(typed_arrays_exist&&'responseType'in req){req.responseType='arraybuffer';}else{req.overrideMimeType('text/plain; charset=x-user-defined');typed_arrays_exist=false;}
req.onerror=function(e){throw"Error while loading "+req.statusText;};req.onload=function(e){console.log('onload triggered');document.execCommand("enableInlineTableEditing",null,false);if(req.readyState===4){if(req.status===200){if(typed_arrays_exist&&'mozResponse'in req){binaries[slot]=req.mozResponse;}else if(typed_arrays_exist&&req.mozResponseArrayBuffer){binaries[slot]=req.mozResponseArrayBuffer;}else if('responseType'in req){binaries[slot]=req.response;}else{binaries[slot]=req.responseText;}
}else{throw"Error while loading "+url;}}}
req.send(null);};function checkbinaries(){if((binaries[0]!=false)&&(binaries[1]!=false)&&(binaries[2]!=false)){console.log("...binaries done loading, calling start()")
start();}else{setTimeout(checkbinaries,500);}};function load_binaries(){console.log("requesting binaries");loadbinary("vmlinux-2.6.20.bin",0);loadbinary("root.bin",1);loadbinary("linuxstart.bin",2);console.log("waiting for binaries to finish loading...");checkbinaries();}
function start()
{var start_addr,initrd_size,params,cmdline_addr;params=new Object();params.serial_write=term.write.bind(term);params.mem_size=parseInt(selectableOptions["ram"][defaultPreset["ram"]])*1024*1024;params.clipboard_get=clipboard_get;params.clipboard_set=clipboard_set;params.get_boot_time=get_boot_time;pc=new PCEmulator(params);pc.load_binary(binaries[0],0x00100000);initrd_size=pc.load_binary(binaries[1],0x00400000);start_addr=0x10000;pc.load_binary(binaries[2],start_addr);cmdline_addr=0xf800;pc.cpu.write_string(cmdline_addr,'console=ttyS0 root=/dev/ram0 rw init=/sbin/init notsc=1 acpi_os_name="JSLinux Mobile"');pc.cpu.eip=start_addr;pc.cpu.regs[0]=params.mem_size;pc.cpu.regs[3]=initrd_size;pc.cpu.regs[1]=cmdline_addr;boot_start_time=(+new Date());pc.start();}
term_start();