The following is the HowTo about debugging tux3 with qemu and gdb. But it requires two nodes hda and hdb in /dev, I advice you to repost the filesystem with pre-created these nodes.
cd /dev mknode -m 644 hda b 3 0 mknode -m 644 hdb b 3 64 And it also requires commenting the following line in file /etc/inittab #1:23:respawn:/sbin/getty 38400 tty1 HowTo about debugging tux3 with qemu and gdb: # Get a kernel tree: wget http://kernel.org/pub/linux/kernel/v2.6/linux-2.6.26.5.tar.bz2 tar -xjf linux-2.6.26.5.tar.bz2 cd linux-2.6.26.5 # Get the Christmas tux3 patch and patch the kernel: wget http://tux3.org/patches/tux3-2.6.26.5-4 patch <tux3-2.6.26.5-4 -p1 # Build kernel with tux3: make defconfig make CONFIG_TUX3=y CONFIG_DEBUG_INFO=y CONFIG_FRAME_POINTER=y sudo make # Get the Christmas tux3 userspace snapshot: wget http://tux3.org/downloads/snapshots/tux3-20081230.tar.gz tar -xzf tux3-20081230.tar.gz cd tux3/user make # make a tux3 filesystem in a file dd if=/dev/zero of=testdev bs=1M count=1 tux3 mkfs testdev 1. boot for common test # boot qemu using loop back on the root fs and tux3 test fs copy tuxroot and testdev into kernel source dir, then type command: cd $kernel_source_dir $ qemu -hda tuxroot -hdb testdev -kernel arch/i386/boot/bzImage -append root=/dev/hda -boot c Log in to uml as root and: mount /dev/hdb /mnt ls -l /mnt 2. boot for debugging tux3 with qemu + gdb # boot qemu using the following command $ qemu -hda tuxroot -hdb testdev -kernel arch/i386/boot/bzImage -append root=/dev/hda -boot c -S -s # create .gdbinit file in $kernel_source_dir for gdb echo "target remote localhost:1234" > .gdbinit echo "b start_kernel" >> .gdbinit echo "b panic" >> .gdbinit #open a new terminal, and run gdb under $kernel_source_dir gdb ./vmlinux _______________________________________________ Tux3 mailing list [email protected] http://mailman.tux3.org/cgi-bin/mailman/listinfo/tux3
