This appendix is a collection of links we found useful developing our own kernels and these notes.
- Grub and grub.cfg documentation: https://www.gnu.org/software/grub/manual/grub/grub.html
- Multiboot 2 Specification: https://www.gnu.org/software/grub/manual/multiboot2/multiboot.html
- Limine documentation:https://github.com/limine-bootloader/limine
- The Limine Protocol: https://github.com/limine-bootloader/limine/blob/v8.x/PROTOCOL.md
- Limine C Template: https://github.com/limine-bootloader/limine-c-template/tree/trunk
- Sabaton - ARM Stivale 2 Bootloader: https://github.com/FlorenceOS/Sabaton
- Xorriso Documentation: https://linux.die.net/man/1/xorriso
- GNU Make Documentation: https://www.gnu.org/software/make/manual/make.html
- Linker Scripts Documentation : https://sourceware.org/binutils/docs/ld/Scripts.html#Scripts
- Bootlin Toolchains : https://toolchains.bootlin.com/
- OS Dev Wiki - Building A Cross Compiler: https://wiki.osdev.org/GCC_Cross-Compiler
- Intel Software developer's manual Vol 3A APIC Chapter
- IOAPIC Datasheet: https://pdos.csail.mit.edu/6.828/2016/readings/ia32/ioapic.pdf
- Broken Thorn Osdev Book Series, The PIC: http://www.brokenthorn.com/Resources/OSDevPic.html
- Osdev wiki page for RSDP: https://wiki.osdev.org/RSDP
- Osdev wiki page for RSDThttps://wiki.osdev.org/RSDT
- OSdev Wiki - Pit page: https://wiki.osdev.org/Programmable_Interval_Timer
- Broken Thron Osdev Book Series Chapter 16 PIC, PIT and Exceptions: http://www.brokenthorn.com/Resources/OSDev16.htm
- Osdev Wiki Ps2 Keyboard page: https://wiki.osdev.org/PS/2_Keyboard
- Osdev Wiki Interrupts page: https://wiki.osdev.org/IRQ#From_the_keyboard.27s_perspective
- Osdev Wiki 8042 Controller pagepage: https://wiki.osdev.org/8042_PS/2_Controller#Translation
- Scancode sets page: https://www.win.tue.nl/~aeb/linux/kbd/scancodes-10.html#scancodesets
- Brokenthorn Book Series Chapter 19 Keyboard programming: http://www.brokenthorn.com/Resources/OSDev19.html
- JMNL.xyz blog post about creating a ui: https://jmnl.xyz/window-manager/
- Osdev wiki page for PSF format: https://wiki.osdev.org/PC_Screen_Font
- gbdfed - Tool to inspect PSF files: https://github.com/andrewshadura/gbdfed
- PSF Formats: https://www.win.tue.nl/~aeb/linux/kbd/font-formats-1.html
- Osdev Forum PSF problem post: https://forum.osdev.org/viewtopic.php?f=1&t=41549
- Intel Software developer's manual Vol 3A Paging Chapter
- Osdev Wiki page for Page Frame Allocation: https://wiki.osdev.org/Page_Frame_Allocation
- Writing an Os in Rust by Philipp Oppermann Memory management: https://os.phil-opp.com/paging-introduction/
- Broken Thorn Osdev Book Series, Chapter 18: The VMM http://www.brokenthorn.com/Resources/OSDev18.html
- Osdev Wiki page for Scheduling Algorithm: https://wiki.osdev.org/Scheduling_Algorithms
- Operating System Three Easy Pieces (Book): https://pages.cs.wisc.edu/~remzi/OSTEP/
- Broken Thorn Osdev Book Series: http://www.brokenthorn.com/Resources/OSDev25.html
- Writing an Os in Rust by Philip Opperman Multitasking: https://os.phil-opp.com/async-await/
- Intel Software developer's manual Vol 3A Protection Chapter
- Wiki Osdev Page for Ring 3: https://wiki.osdev.org/Getting_to_Ring_3
- Default calling conventions for different compilers: https://www.agner.org/optimize/#manuals
- Wiki Osdev Page for IPC Data Copying: https://wiki.osdev.org/IPC_Data_Copying_methods
- Wiki Osdev Page Message Passing Tutorial: https://wiki.osdev.org/Message_Passing_Tutorial
- Wikipedia IPC page: https://en.wikipedia.org/wiki/Inter-process_communication
- InterProcess communication by GeeksForGeeks: https://www.geeksforgeeks.org/inter-process-communication-ipc/
- Wiki Osdev page for USTAR: https://wiki.osdev.org/USTAR
- Tar (Wikipedia): https://en.wikipedia.org/wiki/Tar_(computing)
- Osdev Wiki page for VFS: https://wiki.osdev.org/VFS
- Vnodes: An Architecture for Multiple File System Types in Sun Unix: https://www.cs.fsu.edu/~awang/courses/cop5611_s2004/vnode.pd
- The ELF Specification: https://refspecs.linuxbase.org/LSB_3.0.0/LSB-PDA/LSB-PDA/generic-elf.html
- Osdev Wiki Page for ELF: https://wiki.osdev.org/ELF
- Osdev Wiki Page ELF Tutorial: https://wiki.osdev.org/ELF_Tutorial
- x86-64 psABI: https://gitlab.com/x86-psABIs/x86-64-ABI
- IBM inline assembly guide This is not gcc related, but the syntax is identical, and it contains useful and concise info on the constraintsa
- Fedora Inline assembly list of constraints
- Nasm Struct Section: https://www.nasm.us/xdoc/2.15/html/nasmdoc5.html#section-5.9.1
- Nasm String section: https://www.nasm.us/xdoc/2.15/html/nasmdoc3.html#section-3.4.2
- Osdev Wiki Page for kernel debugging: https://wiki.osdev.org/Kernel_Debugging
- Osdev Wiki Page for Serial ports: https://wiki.osdev.org/Serial_Ports
- Debugging with Qemu at Wikibooks: https://en.wikibooks.org/wiki/QEMU/Debugging_with_QEMU
- Osdev Forum: https://forum.osdev.org/
- Operating System Development on Reddit: https://www.reddit.com/r/osdev/
- OSdev Discord server: https://discord.gg/osdev
- Friendly Operating System Devs: https://discord.gg/Vwudfxx8Sp
- Gnu.org TAR manual page: https://www.gnu.org/software/tar/manual/html_node/Standard.html
- Broken Thorne Osdev Book Series Chapter 22 VFS: http://www.brokenthorn.com/Resources/OSDev22.html
- Operating System Three Easy Pieces (Book): https://pages.cs.wisc.edu/~remzi/OSTEP/
- Operating Systems Design And Implementation by Andres S. Tanenbaum. Difficult to find as of today, but if you can it's an excellent resource on the minix kernel.
- Think Os By Allen B. Downey: https://greenteapress.com/thinkos/
- Xv6 is a modern rewrite of v6 unix, for teaching purposes. It comes with an accompanying book which walks through each part of the source code. It was later ported to risc-v, but the x86 version is still available (but no longer actively maintained): https://pdos.csail.mit.edu/6.S081/2020/xv6/book-riscv-rev1.pdf
An interesting github repository with a lot of resources about operating systems like guides, tutorials, hobby kernels, is the awesome-os project by @jubalh available here: https://github.com/jubalh/awesome-os