private void RequestMemory()
{
var size = _Height * _Pitch;
// TODO: Don't replace Addr field
_Addr = SysCalls.GetPhysicalMemory(_Addr, (uint)size);
}
public static unsafe FrameBuffer CreateFrameBuffer()
{
var targetProcId = SysCalls.GetProcessIDForCommand(SysCallTarget.GetFramebufferInfo);
var fbInfoMem = SysCalls.RequestMessageBuffer(4096, targetProcId);
SysCalls.GetFramebufferInfo(fbInfoMem);
var fbPresent = (int *)fbInfoMem.Start;
if (*fbPresent == 0)
{
return(null);
}
var fbInfo = *(BootInfoFramebufferInfo *)(fbInfoMem.Start + 4);
fbInfo.FbAddr = SysCalls.GetPhysicalMemory(fbInfo.FbAddr, fbInfo.RequiredMemory);
return(new FrameBuffer(ref fbInfo));
}
public void Init()
{
var memorySize = (uint)(_Pitch * _Height * 4);
_Addr = SysCalls.GetPhysicalMemory(_Addr, memorySize);
}
public void Initialize()
{
_Rows = 25;
_Columns = 80;
BaseAddr = SysCalls.GetPhysicalMemory(0x0B8000, (uint)(_Rows * _Columns * 2));
}
/// <summary>
/// Gets a block of memory from the kernel
/// </summary>
/// <param name="address">The address.</param>
/// <param name="size">The size.</param>
public override ConstrainedPointer GetPhysicalMemory(Pointer address, uint size)
{
var virtAddr = (Addr)SysCalls.GetPhysicalMemory((uint)address, size);
return(new ConstrainedPointer((Pointer)(uint)virtAddr, size));
}