argOS

This is a really generic Operating System (argOS), which is intended to be a playground in which to write operating system code.

The minimal build/run process is:

$ ./setup.sh gcc xorriso grub
$ make
$ make qemu

For detailed build instructions, see the BUILD.md file.

For license information, see the LICENSE file.

For contributor information, see the CONTRIBUTORS file.

WhereAmI

• Successfully cross-compile elf64 kernel
• Setup 32-bit multiboot bootstrap
• Fully automate build process
• Separate src and bin
• Call custom code
• Switch to long mode
• ???
• Profit

Resources

Phil Opp got me started:

• http://os.phil-opp.com/multiboot-kernel.html

I took a course with Prof Karsten, who wrote an experimental kernel from which I stole some configuration:

• https://git.uwaterloo.ca/mkarsten/KOS

Of course, osdev.org provided so many resources:

• http://wiki.osdev.org/Creating_a_64-bit_kernel
• http://wiki.osdev.org/LLVM_Cross-Compiler
• http://wiki.osdev.org/GRUB_2

And I found a bunch of miscellaneous resources on the way:

• https://www.linux.com/blog/cross-compiling-arm
• http://clang.llvm.org/docs/CrossCompilation.html
• https://falstaff.agner.ch/2015/03/03/cross-compile-linux-for-arm-using-llvmclang-on-arch-linux/

Attribution

Some of this code comes from existing sources, this is limited to:

from http://wiki.osdev.org/Creating_a_64-bit_kernel#link.ld

• link.ld

from http://os.phil-opp.com/multiboot-kernel.html

• bootstrap.ld
• multiboot_header.asm
• boot.asm

from https://git.uwaterloo.ca/mkarsten/KOS

• some of setup.sh