914 lines
23 KiB
JavaScript
914 lines
23 KiB
JavaScript
"use strict";
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/**
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* Constructor for emulator instances.
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*
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* Usage: `var emulator = new V86Starter(options);`
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*
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* Options can have the following properties (all optional, default in parenthesis):
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*
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* - `memory_size number` (16 * 1024 * 1024) - The memory size in bytes, should
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* be a power of 2.
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* - `vga_memory_size number` (8 * 1024 * 1024) - VGA memory size in bytes.
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*
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* - `autostart boolean` (false) - If emulation should be started when emulator
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* is ready.
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*
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* - `disable_keyboard boolean` (false) - If the keyboard should be disabled.
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* - `disable_mouse boolean` (false) - If the mouse should be disabled.
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*
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* - `network_relay_url string` (No network card) - The url of a server running
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* websockproxy. See [networking.md](networking.md). Setting this will
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* enable an emulated network card.
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*
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* - `bios Object` (No bios) - Either a url pointing to a bios or an
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* ArrayBuffer, see below.
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* - `vga_bios Object` (No VGA bios) - VGA bios, see below.
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* - `hda Object` (No hard drive) - First hard disk, see below.
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* - `fda Object` (No floppy disk) - First floppy disk, see below.
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* - `cdrom Object` (No CD) - See below.
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* - `initial_state Object` (Normal boot) - An initial state to load, see
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* [`restore_state`](#restore_statearraybuffer-state) and below.
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*
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* - `filesystem Object` (No 9p filesystem) - A 9p filesystem, see
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* [filesystem.md](filesystem.md).
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*
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* - `serial_container HTMLTextAreaElement` (No serial terminal) - A textarea
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* that will receive and send data to the emulated serial terminal.
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* Alternatively the serial terminal can also be accessed programatically,
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* see [serial.html](../examples/serial.html).
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*
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* - `screen_container HTMLElement` (No screen) - An HTMLElement. This should
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* have a certain structure, see [basic.html](../examples/basic.html).
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*
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* ***
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*
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* There are two ways to load images (`bios`, `vga_bios`, `cdrom`, `hda`, ...):
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*
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* - Pass an object that has a url. Optionally, `async: true` and `size:
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* size_in_bytes` can be added to the object, so that sectors of the image
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* are loaded on demand instead of being loaded before boot (slower, but
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* strongly recommended for big files). In that case, the `Range: bytes=...`
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* header must be supported on the server.
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*
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* ```javascript
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* // download file before boot
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* options.bios = {
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* url: "bios/seabios.bin"
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* }
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* // download file sectors as requested, size is required
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* options.hda = {
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* url: "disk/linux.iso",
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* async: true,
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* size: 16 * 1024 * 1024
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* }
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* ```
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*
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* - Pass an `ArrayBuffer` or `File` object as `buffer` property.
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*
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* ```javascript
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* // use <input type=file>
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* options.bios = {
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* buffer: document.all.hd_image.files[0]
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* }
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* // start with empty hard drive
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* options.hda = {
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* buffer: new ArrayBuffer(16 * 1024 * 1024)
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* }
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* ```
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*
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* ***
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*
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* @param {Object} options Options to initialize the emulator with.
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* @constructor
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*/
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function V86Starter(options)
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{
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//var worker = new Worker("src/browser/worker.js");
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//var adapter_bus = this.bus = WorkerBus.init(worker);
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this.cpu_is_running = false;
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var bus = Bus.create();
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var adapter_bus = this.bus = bus[0];
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this.emulator_bus = bus[1];
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var emulator = this.v86 = new v86(this.emulator_bus);
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this.bus.register("emulator-stopped", function()
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{
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this.cpu_is_running = false;
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}, this);
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this.bus.register("emulator-started", function()
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{
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this.cpu_is_running = true;
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}, this);
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var settings = {};
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settings.load_devices = true;
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settings.memory_size = options["memory_size"] || 64 * 1024 * 1024;
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settings.vga_memory_size = options["vga_memory_size"] || 8 * 1024 * 1024;
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settings.boot_order = options["boot_order"] || 0x213;
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settings.fda = undefined;
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settings.fdb = undefined;
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if(options["network_relay_url"])
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{
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this.network_adapter = new NetworkAdapter(options["network_relay_url"], adapter_bus);
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settings.enable_ne2k = true;
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}
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if(!options["disable_keyboard"])
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{
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this.keyboard_adapter = new KeyboardAdapter(adapter_bus);
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}
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if(!options["disable_mouse"])
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{
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this.mouse_adapter = new MouseAdapter(adapter_bus);
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}
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if(options["screen_container"])
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{
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this.screen_adapter = new ScreenAdapter(options["screen_container"], adapter_bus);
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}
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if(options["serial_container"])
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{
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this.serial_adapter = new SerialAdapter(options["serial_container"], adapter_bus);
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}
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// ugly, but required for closure compiler compilation
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function put_on_settings(name, buffer)
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{
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switch(name)
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{
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case "hda":
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settings.hda = buffer;
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break;
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case "hdb":
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settings.hdb = buffer;
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break;
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case "cdrom":
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settings.cdrom = buffer;
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break;
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case "fda":
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settings.fda = buffer;
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break;
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case "fdb":
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settings.fdb = buffer;
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break;
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case "bios":
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settings.bios = buffer.buffer;
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break;
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case "vga_bios":
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settings.vga_bios = buffer.buffer;
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break;
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case "initial_state":
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settings.initial_state = buffer.buffer;
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break;
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case "fs9p_json":
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settings.fs9p_json = buffer.buffer;
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break;
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default:
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dbg_assert(false, name);
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}
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}
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var files_to_load = [];
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function add_file(name, file)
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{
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if(!file)
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{
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return;
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}
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if(file["get"] && file["set"] && file["load"])
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{
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files_to_load.push({
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name: name,
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loadable: file,
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});
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return;
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}
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// Anything coming from the outside world needs to be quoted for
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// Closure Compiler compilation
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file = {
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buffer: file["buffer"],
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async: file["async"],
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url: file["url"],
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size: file["size"],
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};
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if(name === "bios" || name === "vga_bios" || name === "initial_state")
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{
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// Ignore async for these because they must be availabe before boot.
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// This should make result.buffer available after the object is loaded
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file.async = false;
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}
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if(file.buffer instanceof ArrayBuffer)
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{
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var buffer = new SyncBuffer(file.buffer);
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files_to_load.push({
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name: name,
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loadable: buffer,
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});
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}
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else if(file.buffer instanceof File)
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{
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// SyncFileBuffer:
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// - loads the whole disk image into memory, impossible for large files (more than 1GB)
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// - can later serve get/set operations fast and synchronously
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// - takes some time for first load, neglectable for small files (up to 100Mb)
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//
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// AsyncFileBuffer:
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// - loads slices of the file asynchronously as requested
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// - slower get/set
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// Heuristics: If file is smaller than 256M, use SyncFileBuffer
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if(file.async === undefined)
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{
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file.async = file.buffer.size < 256 * 1024 * 1024;
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}
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if(file.async)
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{
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var buffer = new v86util.SyncFileBuffer(file.buffer);
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}
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else
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{
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var buffer = new v86util.AsyncFileBuffer(file.buffer);
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}
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files_to_load.push({
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name: name,
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loadable: buffer,
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});
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}
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else if(file.url)
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{
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if(file.async)
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{
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var buffer = new v86util.AsyncXHRBuffer(file.url, file.size);
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files_to_load.push({
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name: name,
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loadable: buffer,
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});
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}
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else
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{
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files_to_load.push({
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name: name,
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url: file.url,
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size: file.size,
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});
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}
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}
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else
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{
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dbg_log("Ignored file: url=" + file.url + " buffer=" + file.buffer);
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}
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}
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var image_names = [
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"bios", "vga_bios",
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"cdrom", "hda", "hdb", "fda", "fdb",
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"initial_state",
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];
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for(var i = 0; i < image_names.length; i++)
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{
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add_file(image_names[i], options[image_names[i]]);
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}
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if(options["filesystem"])
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{
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var fs_url = options["filesystem"]["basefs"];
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var base_url = options["filesystem"]["baseurl"];
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this.fs9p = new FS(base_url);
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settings.fs9p = this.fs9p;
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if(fs_url)
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{
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console.assert(base_url, "Filesystem: baseurl must be specified");
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var size;
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if(typeof fs_url === "object")
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{
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size = fs_url["size"];
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fs_url = fs_url["url"];
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}
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dbg_assert(typeof fs_url === "string");
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files_to_load.push({
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name: "fs9p_json",
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url: fs_url,
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size: size,
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as_text: true,
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});
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}
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}
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var starter = this;
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var total = files_to_load.length;
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var cont = function(index)
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{
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if(index === total)
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{
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setTimeout(done.bind(this), 0);
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return;
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}
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var f = files_to_load[index];
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if(f.loadable)
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{
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f.loadable.onload = function(e)
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{
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put_on_settings(f.name, f.loadable);
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cont(index + 1);
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}
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f.loadable.load();
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}
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else
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{
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v86util.load_file(f.url, {
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done: function(result)
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{
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put_on_settings(f.name, new SyncBuffer(result));
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cont(index + 1);
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},
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progress: function progress(e)
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{
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starter.emulator_bus.send("download-progress", {
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file_index: index,
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file_count: total,
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file_name: f.url,
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lengthComputable: e.lengthComputable,
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total: f.size || e.total,
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loaded: e.loaded,
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});
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},
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as_text: f.as_text,
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});
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}
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}.bind(this);
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cont(0);
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function done()
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{
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if(settings.initial_state)
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{
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settings.no_initial_alloc = true;
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}
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this.bus.send("cpu-init", settings);
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setTimeout(function()
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{
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if(settings.initial_state)
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{
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emulator.restore_state(settings.initial_state);
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}
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setTimeout(function()
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{
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if(settings.fs9p && settings.fs9p_json)
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{
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settings.fs9p.OnJSONLoaded(settings.fs9p_json);
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}
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if(options["autostart"])
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{
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this.bus.send("cpu-run");
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}
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}.bind(this), 0)
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}.bind(this), 0);
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}
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}
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/**
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* Start emulation. Do nothing if emulator is running already. Can be
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* asynchronous.
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*/
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V86Starter.prototype.run = function()
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{
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this.bus.send("cpu-run");
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};
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/**
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* Stop emulation. Do nothing if emulator is not running. Can be asynchronous.
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*/
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V86Starter.prototype.stop = function()
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{
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this.bus.send("cpu-stop");
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};
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/**
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* @ignore
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*/
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V86Starter.prototype.destroy = function()
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{
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this.keyboard_adapter.destroy();
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};
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/**
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* Restart (force a reboot).
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*/
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V86Starter.prototype.restart = function()
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{
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this.bus.send("cpu-restart");
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};
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/**
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* Add an event listener (the emulator is an event emitter). A list of events
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* can be found at [events.md](events.md).
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*
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* The callback function gets a single argument which depends on the event.
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*
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* @param {string} event Name of the event.
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* @param {function(*)} listener The callback function.
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*/
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V86Starter.prototype.add_listener = function(event, listener)
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{
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this.bus.register(event, listener, this);
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};
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/**
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* Remove an event listener.
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*
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* @param {string} event
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* @param {function(*)} listener
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*/
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V86Starter.prototype.remove_listener = function(event, listener)
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{
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this.bus.unregister(event, listener);
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};
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/**
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* Restore the emulator state from the given state, which must be an
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* ArrayBuffer returned by
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* [`save_state`](#save_statefunctionobject-arraybuffer-callback).
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*
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* Note that the state can only be restored correctly if this constructor has
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* been created with the same options as the original instance (e.g., same disk
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* images, memory size, etc.).
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*
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* Different versions of the emulator might use a different format for the
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* state buffer.
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*
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* @param {ArrayBuffer} state
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*/
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V86Starter.prototype.restore_state = function(state)
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{
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this.v86.restore_state(state);
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};
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/**
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* Asynchronously save the current state of the emulator. The first argument to
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* the callback is an Error object if something went wrong and is null
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* otherwise.
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*
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* @param {function(Object, ArrayBuffer)} callback
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*/
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V86Starter.prototype.save_state = function(callback)
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{
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// Might become asynchronous at some point
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setTimeout(function()
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{
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try
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{
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callback(null, this.v86.save_state());
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}
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catch(e)
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{
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callback(e, null);
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}
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}.bind(this), 0);
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};
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/**
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* Return an object with several statistics. Return value looks similar to
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* (but can be subject to change in future versions or different
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* configurations, so use defensively):
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*
|
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* ```javascript
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* {
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* "cpu": {
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* "instruction_counter": 2821610069
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* },
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* "hda": {
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* "sectors_read": 95240,
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* "sectors_written": 952,
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* "bytes_read": 48762880,
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* "bytes_written": 487424,
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* "loading": false
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* },
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* "cdrom": {
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* "sectors_read": 0,
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* "sectors_written": 0,
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* "bytes_read": 0,
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* "bytes_written": 0,
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* "loading": false
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* },
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* "mouse": {
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* "enabled": true
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* },
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* "vga": {
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* "is_graphical": true,
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* "res_x": 800,
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* "res_y": 600,
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* "bpp": 32
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* }
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* }
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* ```
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*
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* @deprecated
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* @return {Object}
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*/
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V86Starter.prototype.get_statistics = function()
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{
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console.warn("V86Starter.prototype.get_statistics is deprecated. Use events instead.");
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var stats = {
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cpu: {
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instruction_counter: this.get_instruction_counter(),
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},
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};
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if(!this.v86)
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{
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return stats;
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}
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var devices = this.v86.cpu.devices;
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if(devices.hda)
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{
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stats.hda = devices.hda.stats;
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}
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if(devices.cdrom)
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{
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stats.cdrom = devices.cdrom.stats;
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}
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if(devices.ps2)
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{
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stats["mouse"] = {
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"enabled": devices.ps2.use_mouse,
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};
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}
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if(devices.vga)
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{
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stats["vga"] = {
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"is_graphical": devices.vga.stats.is_graphical,
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};
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}
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return stats;
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};
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/**
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* @return {number}
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* @ignore
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|
*/
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V86Starter.prototype.get_instruction_counter = function()
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{
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|
if(this.v86)
|
|
{
|
|
return this.v86.cpu.timestamp_counter;
|
|
}
|
|
else
|
|
{
|
|
// TODO: Should be handled using events
|
|
return 0;
|
|
}
|
|
};
|
|
|
|
/**
|
|
* @return {boolean}
|
|
*/
|
|
V86Starter.prototype.is_running = function()
|
|
{
|
|
return this.cpu_is_running;
|
|
};
|
|
|
|
/**
|
|
* Send a sequence of scan codes to the emulated PS2 controller. A list of
|
|
* codes can be found at http://stanislavs.org/helppc/make_codes.html.
|
|
* Do nothing if there is no keyboard controller.
|
|
*
|
|
* @param {Array.<number>} codes
|
|
*/
|
|
V86Starter.prototype.keyboard_send_scancodes = function(codes)
|
|
{
|
|
for(var i = 0; i < codes.length; i++)
|
|
{
|
|
this.bus.send("keyboard-code", codes[i]);
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Send translated keys
|
|
* @ignore
|
|
*/
|
|
V86Starter.prototype.keyboard_send_keys = function(codes)
|
|
{
|
|
for(var i = 0; i < codes.length; i++)
|
|
{
|
|
this.keyboard_adapter.simulate_press(codes[i]);
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Send text
|
|
* @ignore
|
|
*/
|
|
V86Starter.prototype.keyboard_send_text = function(string)
|
|
{
|
|
for(var i = 0; i < string.length; i++)
|
|
{
|
|
this.keyboard_adapter.simulate_char(string[i]);
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Download a screenshot.
|
|
*
|
|
* @ignore
|
|
*/
|
|
V86Starter.prototype.screen_make_screenshot = function()
|
|
{
|
|
if(this.screen_adapter)
|
|
{
|
|
this.screen_adapter.make_screenshot();
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Set the scaling level of the emulated screen.
|
|
*
|
|
* @param {number} sx
|
|
* @param {number} sy
|
|
*
|
|
* @ignore
|
|
*/
|
|
V86Starter.prototype.screen_set_scale = function(sx, sy)
|
|
{
|
|
if(this.screen_adapter)
|
|
{
|
|
this.screen_adapter.set_scale(sx, sy);
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Go fullscreen.
|
|
*
|
|
* @ignore
|
|
*/
|
|
V86Starter.prototype.screen_go_fullscreen = function()
|
|
{
|
|
if(!this.screen_adapter)
|
|
{
|
|
return;
|
|
}
|
|
|
|
var elem = document.getElementById("screen_container");
|
|
|
|
if(!elem)
|
|
{
|
|
return;
|
|
}
|
|
|
|
// bracket notation because otherwise they get renamed by closure compiler
|
|
var fn = elem["requestFullScreen"] ||
|
|
elem["webkitRequestFullscreen"] ||
|
|
elem["mozRequestFullScreen"] ||
|
|
elem["msRequestFullScreen"];
|
|
|
|
if(fn)
|
|
{
|
|
fn.call(elem);
|
|
|
|
// This is necessary, because otherwise chromium keyboard doesn't work anymore.
|
|
// Might (but doesn't seem to) break something else
|
|
var focus_element = document.getElementsByClassName("phone_keyboard")[0];
|
|
focus_element && focus_element.focus();
|
|
}
|
|
|
|
//this.lock_mouse(elem);
|
|
this.lock_mouse();
|
|
};
|
|
|
|
/**
|
|
* Lock the mouse cursor: It becomes invisble and is not moved out of the
|
|
* browser window.
|
|
*
|
|
* @ignore
|
|
*/
|
|
V86Starter.prototype.lock_mouse = function()
|
|
{
|
|
var elem = document.body;
|
|
|
|
var fn = elem["requestPointerLock"] ||
|
|
elem["mozRequestPointerLock"] ||
|
|
elem["webkitRequestPointerLock"];
|
|
|
|
if(fn)
|
|
{
|
|
fn.call(elem);
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Enable or disable sending mouse events to the emulated PS2 controller.
|
|
*
|
|
* @param {boolean} enabled
|
|
*/
|
|
V86Starter.prototype.mouse_set_status = function(enabled)
|
|
{
|
|
if(this.mouse_adapter)
|
|
{
|
|
this.mouse_adapter.emu_enabled = enabled;
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Enable or disable sending keyboard events to the emulated PS2 controller.
|
|
*
|
|
* @param {boolean} enabled
|
|
*/
|
|
V86Starter.prototype.keyboard_set_status = function(enabled)
|
|
{
|
|
if(this.keyboard_adapter)
|
|
{
|
|
this.keyboard_adapter.emu_enabled = enabled;
|
|
}
|
|
};
|
|
|
|
|
|
/**
|
|
* Send a string to the first emulated serial terminal.
|
|
*
|
|
* @param {string} data
|
|
*/
|
|
V86Starter.prototype.serial0_send = function(data)
|
|
{
|
|
for(var i = 0; i < data.length; i++)
|
|
{
|
|
this.bus.send("serial0-input", data.charCodeAt(i));
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Write to a file in the 9p filesystem. Nothing happens if no filesystem has
|
|
* been initialized. First argument to the callback is an error object if
|
|
* something went wrong and null otherwise.
|
|
*
|
|
* @param {string} file
|
|
* @param {Uint8Array} data
|
|
* @param {function(Object)=} callback
|
|
*/
|
|
V86Starter.prototype.create_file = function(file, data, callback)
|
|
{
|
|
var fs = this.fs9p;
|
|
|
|
if(!fs)
|
|
{
|
|
return;
|
|
}
|
|
|
|
var parts = file.split("/");
|
|
var filename = parts[parts.length - 1];
|
|
|
|
var path_infos = fs.SearchPath(file);
|
|
var parent_id = path_infos.parentid;
|
|
var not_found = filename === "" || parent_id === -1
|
|
|
|
if(!not_found)
|
|
{
|
|
fs.CreateBinaryFile(filename, parent_id, data);
|
|
}
|
|
|
|
if(callback)
|
|
{
|
|
setTimeout(function()
|
|
{
|
|
if(not_found)
|
|
{
|
|
callback(new FileNotFoundError());
|
|
}
|
|
else
|
|
{
|
|
callback(null);
|
|
}
|
|
}, 0);
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Read a file in the 9p filesystem. Nothing happens if no filesystem has been
|
|
* initialized.
|
|
*
|
|
* @param {string} file
|
|
* @param {function(Object, Uint8Array)} callback
|
|
*/
|
|
V86Starter.prototype.read_file = function(file, callback)
|
|
{
|
|
var fs = this.fs9p;
|
|
|
|
if(!fs)
|
|
{
|
|
return;
|
|
}
|
|
|
|
var path_infos = fs.SearchPath(file);
|
|
var id = path_infos.id;
|
|
|
|
if(id === -1)
|
|
{
|
|
callback(new FileNotFoundError(), null);
|
|
}
|
|
else
|
|
{
|
|
fs.OpenInode(id, undefined);
|
|
fs.AddEvent(
|
|
id,
|
|
function()
|
|
{
|
|
var data = fs.inodedata[id];
|
|
|
|
if(data)
|
|
{
|
|
callback(null, data.subarray(0, fs.inodes[id].size));
|
|
}
|
|
else
|
|
{
|
|
callback(new FileNotFoundError(), null);
|
|
}
|
|
}
|
|
);
|
|
}
|
|
};
|
|
|
|
/**
|
|
* @ignore
|
|
* @constructor
|
|
*
|
|
* @param {string=} message
|
|
*/
|
|
function FileNotFoundError(message)
|
|
{
|
|
this.message = message || "File not found";
|
|
}
|
|
FileNotFoundError.prototype = Error.prototype;
|
|
|
|
// Closure Compiler's way of exporting
|
|
if(typeof window !== "undefined")
|
|
{
|
|
window["V86Starter"] = V86Starter;
|
|
}
|
|
else if(typeof module !== "undefined" && typeof module.exports !== "undefined")
|
|
{
|
|
module.exports["V86Starter"] = V86Starter;
|
|
}
|
|
else if(typeof importScripts === "function")
|
|
{
|
|
// web worker
|
|
self["V86Starter"] = V86Starter;
|
|
}
|
|
|
|
V86Starter.prototype["run"] = V86Starter.prototype.run;
|
|
V86Starter.prototype["stop"] = V86Starter.prototype.stop;
|
|
V86Starter.prototype["restart"] = V86Starter.prototype.restart;
|
|
V86Starter.prototype["destroy"] = V86Starter.prototype.destroy;
|
|
V86Starter.prototype["add_listener"] = V86Starter.prototype.add_listener;
|
|
V86Starter.prototype["remove_listener"] = V86Starter.prototype.remove_listener;
|
|
V86Starter.prototype["restore_state"] = V86Starter.prototype.restore_state;
|
|
V86Starter.prototype["save_state"] = V86Starter.prototype.save_state;
|
|
V86Starter.prototype["get_statistics"] = V86Starter.prototype.get_statistics;
|
|
V86Starter.prototype["is_running"] = V86Starter.prototype.is_running;
|
|
V86Starter.prototype["keyboard_send_scancodes"] = V86Starter.prototype.keyboard_send_scancodes;
|
|
V86Starter.prototype["keyboard_send_keys"] = V86Starter.prototype.keyboard_send_keys;
|
|
V86Starter.prototype["keyboard_send_text"] = V86Starter.prototype.keyboard_send_text;
|
|
V86Starter.prototype["screen_make_screenshot"] = V86Starter.prototype.screen_make_screenshot;
|
|
V86Starter.prototype["screen_set_scale"] = V86Starter.prototype.screen_set_scale;
|
|
V86Starter.prototype["screen_go_fullscreen"] = V86Starter.prototype.screen_go_fullscreen;
|
|
V86Starter.prototype["lock_mouse"] = V86Starter.prototype.lock_mouse;
|
|
V86Starter.prototype["mouse_set_status"] = V86Starter.prototype.mouse_set_status;
|
|
V86Starter.prototype["keyboard_set_status"] = V86Starter.prototype.keyboard_set_status;
|
|
V86Starter.prototype["serial0_send"] = V86Starter.prototype.serial0_send;
|
|
V86Starter.prototype["create_file"] = V86Starter.prototype.create_file;
|
|
V86Starter.prototype["read_file"] = V86Starter.prototype.read_file;
|