How to get started with STOS ?
Clone the student repository
$ git clone git://git.lse.epita.fr/stos-student
$ mkdir build && cd build $ ../configure --arch=i386 $ make $ make bootable # just for the first time
stos-configfile contains the module list
make bootableis a bit hacky and racy, if nothing come out of the first launch, it is probably because it has failed.
$ qemu-system-x86_64 -nographic \ -monitor pty \ -serial stdio \ -serial pty \ stos-i386-pc.boot
How to debug STOS with Qemu and gdb ?
In order to activate remote debugging of your Qemu virtual machine, you can
activate the gdb stub of Qemu with the
-s switch (or with
-gdb). You can
also stop the VM from starting anything with
With this option, you can now connect with gdb to your vm:
build$ gdb kernel/stos (gdb) target remote localhost:1234
But with that, gdb “sees” only the stos core code. You can’t place any breakpoint on modules for example.
In order to be able to see something, you have 2 choices:
modulelist in order to load the elf of your module correclty.
- Compile every modules of stos in static.
In order to compile your modules in static, you have to change