private void *mmap(uint unknown, uint flags, size_t pages)
{
var bytes = pages * 4096;
var ptr = (byte *)RawVirtualFrameAllocator.RequestRawVirtalMemoryPages(pages);
//KernelMessage.WriteLine("mmap: Pages: {0}, Addr: {1:X8}", pages, (uint)ptr);
for (var i = 0; i < bytes; i++)
{
*(ptr + i) = 0;
}
return(ptr);
}
public unsafe static void Setup()
{
kmallocAllocator = new Allocator();
var ptr = (byte *)RawVirtualFrameAllocator.RequestRawVirtalMemoryPages(KMath.AlignValueCeil(Allocator.headSize, 4096));
for (var i = 0; i < Allocator.headSize; i++)
{
*(ptr + i) = 0;
}
kmallocAllocator.list_heads = (malloc_meta **)ptr;
ManagedMemoy.useAllocator = true;
KernelMessage.WriteLine("Memory free: {0} MB", (PageFrameManager.PagesAvailable * 4096) / 1024 / 1024);
}
public unsafe static void Main()
{
BootInfo.SetupStage1();
// Field needs to be explicit set, because InitializeAssembly is not invoked yet.
Memory.UseKernelWriteProtection = true;
Memory.InitialKernelProtect();
ManagedMemoy.InitializeGCMemory();
Mosa.Runtime.StartUp.InitializeAssembly();
//Mosa.Runtime.StartUp.InitializeRuntimeMetadata();
ApiContext.Current = new ApiHost();
// Setup some pseudo devices
Devices.InitStage1();
//Setup Output and Debug devices
Devices.InitStage2();
// Write first output
KernelMessage.WriteLine("<KERNEL:CONSOLE:BEGIN>");
KernelMessage.WriteLine("Starting Lonos Kernel...");
// Detect environment (Memory Maps, Video Mode, etc.)
BootInfo.SetupStage2();
KernelMemoryMapManager.Setup();
KernelMemoryMapManager.Allocate(0x1000 * 1000, BootInfoMemoryType.PageDirectory);
// Read own ELF-Headers and Sections
KernelElf.Setup();
// Initialize the embedded code (actually only a little proof of conecept code)
NativeCalls.Setup();
//InitialKernelProtect();
PageFrameManager.Setup();
KernelMessage.WriteLine("free: {0}", PageFrameManager.PagesAvailable);
PageFrameManager.AllocatePages(PageFrameRequestFlags.Default, 10);
KernelMessage.WriteLine("free: {0}", PageFrameManager.PagesAvailable);
RawVirtualFrameAllocator.Setup();
Memory.Setup();
// Now Memory Sub System is working. At this point it's valid
// to allocate memory dynamicly
Devices.InitFrameBuffer();
// Setup Programmable Interrupt Table
PIC.Setup();
// Setup Interrupt Descriptor Table
// Important Note: IDT depends on GDT. Never setup IDT before GDT.
IDTManager.Setup();
KernelMessage.WriteLine("Initialize Runtime Metadata");
Mosa.Runtime.StartUp.InitializeRuntimeMetadata();
KernelMessage.WriteLine("Performing some tests");
Tests();
KernelMessage.WriteLine("Enter Main Loop");
AppMain();
}