x86_64 Microkernel that aims to be POSIX compliant later in life.

To build CelesteOS, make sure you have nasm, qemu, and have built the cross-compiler (using maketoolchain.sh).

Building the OS requires access to a Linux install (I recommend Arch or Ubuntu), and there will be no support added ever to build CelesteOS on macOS or Windows based machines.

After you have both a custom cross compiler built and copied to your PATH environment variable (or somewhere like /usr/local/bin), then the OS can be built and tested in QEMU using make run

Using the system GCC compiler is a horrible idea when writing an OS since it will try and link in parts of the standard library that we don't have access to, and a whole bunch of other problems. https://wiki.osdev.org/Why_do_I_need_a_Cross_Compiler

[x] Bootable into long mode

[x] VGA text mode (80x25)

[ ] Interrupts (half done, need to add IRQs)

[ ] TSS (Task State Segment)

[x] Physical memory manager (PMM)

[x] Virtual machine manager & paging