features

• a x86 operating system (tested on bochs-os)
• round-robbin schedule
• virtual memory management
• ext2-like file system
• unix-like syscall support
• support 32 bit elf

documents: doc.md testcases: test.md

dependencies

• bochs (emulator)
  • (with bximage to create disk image)
• gtk2 (gui)
• nasm (x86 assembler)
• clang (or gcc)
• gdb (optional)
• bochs-gdb (optional)
• bear (optional)

for archlinux: (bochs can be found in aur or archlinuxcn repo)

sudo yay -S nasm gtk-2 xorg bochs clang
# optional
# sudo yay -S bochs-gdb gdb bear

build

ensure all necessary dependencies installed

To know more about the build, you can make in the follow procedure:

# prepare a master disk image to store bootloaders and kernel
make master-hd60M.img

# prepare another disk image, and partitioning it (in mbr format)
make slave-hd80.img

# build an elf kernel, raw loader binary, and a mbr (512B)
make kernel.elf loader.bin mbr.bin
# load all these binary into the master disk
make boot-master

# load user process into master disk
# the kernel will load them into fs
make userelf

# run the os in bochs
make bochs

Trick: force rebuild

make -B slave-hd80.img
# generate lsp info
bear -- make -B

TODO

• port to qemu
• built-in editor
• shell readline support
• built-in compiler