public static async Task Main(string[] args)
{
if (Environment.GetEnvironmentVariable("MANAGED_DEBUGGER_WAIT") == "1")
{
HandleDebugger();
}
InitializeProcess();
var bus = new Bus();
InitializeFlags(bus);
if (AppFlag.GetVariable("VM_TRACE"))
{
DeviceLoader.OnTrace += Console.WriteLine;
}
DeviceLoader.AutoGrub(bus.Add);
InitializeMemory(bus, args);
while (bus.State.halt == 0)
{
bus.cpu.Step();
await Task.Delay(1).ConfigureAwait(false);
}
bus.Unload();
}
public static void InitializeFlags(Bus bus)
{
/* @0x11 */
bus.State.tc = AppFlag.GetVariable("VM_TRACE");
/* @0x12 */
bus.State.ec = AppFlag.GetVariable("VM_ERROR", true);
/* @0x13 */
bus.State.km = AppFlag.GetVariable("VM_KEEP_MEMORY");
/* @0x14 */
bus.State.fw = AppFlag.GetVariable("VM_MEM_FAST_WRITE");
}
static DeviceLoader()
{
if (AppFlag.GetVariable("VM_TRACE"))
{
OnTrace += Console.WriteLine;
}
AssemblyLoadContext.Default.Resolving += (context, name) =>
{
var assemblyPath = $"./{name.Name}.dll";
return(context.LoadFromAssemblyPath(assemblyPath));
};
}
public static void InitializeMemory(Bus bus, params string[] args)
{
if (bus.State.halt != 0)
{
return;
}
if (!args.Any())
{
bus.State.Load("<chip>", 0xB00B5000);
}
else
{
var nameFile = Path.Combine(Path.GetDirectoryName(args.First()), Path.GetFileNameWithoutExtension(args.First()));
var file = new FileInfo($"{nameFile}.dlx");
var bios = new FileInfo($"{nameFile}.bios");
var pdb = new FileInfo($"{nameFile}.pdb");
if (AppFlag.GetVariable("VM_ATTACH_DEBUGGER") && pdb.Exists)
{
bus.AttachDebugger(new Debugger(DebugSymbols.Open(File.ReadAllBytes(pdb.FullName))));
}
if (bios.Exists)
{
var asm = AncientAssembly.LoadFrom(bios.FullName);
var bytes = asm.GetILCode();
var meta = asm.GetMetaILCode();
bus.State.Load("<bios>", CastFromBytes(bytes));
bus.State.LoadMeta(meta);
}
if (file.Exists)
{
var asm = AncientAssembly.LoadFrom(file.FullName);
var bytes = asm.GetILCode();
var meta = asm.GetMetaILCode();
bus.State.Load("<exec>", CastFromBytes(bytes));
bus.State.LoadMeta(meta);
}
else
{
bus.State.Load("<chip>", 0xB00B5000);
}
}
}
public static async Task Main(string[] args)
{
if (AppFlag.GetVariable("MANAGED_DEBUGGER_WAIT"))
{
HandleDebugger();
}
InitializeProcess();
var bus = new Bus();
InitializeFlags(bus);
if (AppFlag.GetVariable("VM_TRACE"))
{
DeviceLoader.OnTrace += Console.WriteLine;
}
Module.Boot(bus);
InternalVMFunctions.Boot(bus);
DeviceLoader.Boot(bus.Add);
if (AppFlag.GetVariable("REPL"))
{
Console.WriteLine("@ Ancient VM Interactive @".Pastel(Color.Green));
InteractiveConstruction(bus);
}
else
{
InitializeMemory(bus, args);
}
while (bus.State.halt == 0)
{
bus.cpu.Step();
}
bus.Unload();
}