93 lines
2.3 KiB
JavaScript
Executable file
93 lines
2.3 KiB
JavaScript
Executable file
#!/usr/bin/env node
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"use strict";
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const path = require("path");
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// TODO:
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// - Timeout
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console.log("Don't forget to run `make all` before running this script");
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var fs = require("fs");
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var V86 = require("./../../../build/libv86.js").V86;
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const V86_ROOT = path.join(__dirname, "../../..");
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var OUTPUT_FILE = path.join(V86_ROOT, "images/debian-state-base.bin");
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process.stdin.setRawMode(true);
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process.stdin.resume();
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process.stdin.setEncoding("utf8");
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process.stdin.on("data", handle_key);
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var emulator = new V86({
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bios: { url: path.join(V86_ROOT, "/bios/seabios.bin") },
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vga_bios: { url: path.join(V86_ROOT, "/bios/vgabios.bin") },
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autostart: true,
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memory_size: 512 * 1024 * 1024,
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vga_memory_size: 8 * 1024 * 1024,
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network_relay_url: "<UNUSED>",
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bzimage_initrd_from_filesystem: true,
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cmdline: "rw init=/bin/systemd root=host9p console=ttyS0 spectre_v2=off pti=off",
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filesystem: {
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basefs: {
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url: path.join(V86_ROOT, "/images/debian-base-fs.json"),
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},
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baseurl: path.join(V86_ROOT, "/images/debian-9p-rootfs-flat/"),
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},
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screen_dummy: true,
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});
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console.log("Now booting, please stand by ...");
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var boot_start = Date.now();
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var serial_text = "";
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let booted = false;
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emulator.add_listener("serial0-output-char", function(c)
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{
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process.stdout.write(c);
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serial_text += c;
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if(!booted && serial_text.endsWith("root@localhost:~# "))
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{
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console.error("\nBooted in %d", (Date.now() - boot_start) / 1000);
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booted = true;
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// sync and drop caches: Makes it safer to change the filesystem as fewer files are rendered
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emulator.serial0_send("sync;echo 3 >/proc/sys/vm/drop_caches\n");
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setTimeout(async function ()
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{
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const s = await emulator.save_state();
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fs.writeFile(OUTPUT_FILE, new Uint8Array(s), function(e)
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{
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if(e) throw e;
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console.error("Saved as " + OUTPUT_FILE);
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stop();
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});
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}, 10 * 1000);
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}
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});
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function handle_key(c)
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{
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if(c === "\u0003")
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{
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// ctrl c
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stop();
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}
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else
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{
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emulator.serial0_send(c);
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}
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}
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function stop()
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{
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emulator.stop();
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process.stdin.pause();
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}
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