Represents a 4KiB Page

Represents a physical ATA drive installed on this PC

Enum type that says whether the table is RSDT or XSDT

This terminal driver works in blocking mode The read/write requests are blocked until fullfilled.

BootProtocl is an abstract structure that encapsulates all the boot level information. this abstraction helps us to port a multiboot2 based bootloader

Stores CPU register values which can be restored at later point in time, the default derivation for this struct will initialize all the values to zero

Either a saved state of complete registers or an initial state.

Manages memory allocated for DMA purposes. The granularity of memory allocation is 8KiB frames. This memory cannot be freed once allocated The devices

a driver that handles all these operations:

operations on file-descriptor

Represents the operations performed on File-System

Represents an entry node in VFS tree

Set of control functions used for writing pixels to frame buffer

Represents a framebuffer memory region and other metadata used to control different functions of framebuffer.

Contains the initial state required enough to spin off a thread.

a logger that implements kernel logging functionalities

provides simple virtual memory allocation functions over virtual memory page table of the kernel

implements IO functions used by LAPIC

implements functions using which some basic LAPIC operations can be carried out.

These are the default GDT flags that are used in linux kernel. For our OS, we use the same thing.

Represents a memory address from where data can be read or written, it is similar to h/w ports in cpu::io