A simple hobby OS targeting x86

• nasm
• clang
  • with linker (lld.ld)
• grub
• mkisofs
• qemu
• gdb (for debugging)
• stage2_eldorito
  • Download from here to src/iso/stage2_eltorito

$ sudo pacman -S nasm clang lld grub cdrkit qemu gdb

# clang, nasm, qemu, grub are required
# Compile:
make # -j4 for multithreded compile (4 cores)

# Run in qemu
make run

# Debug
make debug
# In a seperate terminal...
gdb
break kmain
continue

Note for gdb: you may get "...auto-loading has been decline", to fix this, follow the instructions to enable executation below for that directory

• Create starting point in 32 bit
• Create GDT
• Create basic IDT/IQR's
• Keyboard/timer support
• Multiboot info
• Add basic paging
  • Map kernel at higher half
  • Create page frame allocator
  • Crate frames on demand
  • Swap frames on demand
• Heap support
• VFS/initrd
• Multitasking
• Userland

• https://wiki.osdev.org/Main_Page
• http://www.jamesmolloy.co.uk/tutorial_html/
• http://www.osdever.net/bkerndev/Docs/title.htm
• https://littleosbook.github.io
• http://www.brokenthorn.com/Resources/
• http://www.osdever.net/tutorials/