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#myos A toy 'operating system' used for teaching purposes.

#List of files

  • boot.s : entry-point of the OS that implements the 'multiboot' signature and minimal initialisation.
  • kernel.c : high-level code of the OS
  • link.ld : linker script to generate a suitable binary
  • Makefile : build script

Dependencies

To build the project, you need :

Program Debian package
gcc gcc
as binutils
strip binutils
qemu-system-i386 qemu

Building

make myos.bin

builds the kernel

Testing :

qemu-system-i386 -kernel myos.bin

(this requires qemu version 2.0.0 or higher).

References

http://wiki.osdev.org/Tutorials

Notes

This project does not use a cross compiler, but just compiles with -m32 flag (to procduce x86 binary on a 64bit arch) and usr strip to remove unwanted (debugging and info) sections from the final binary.