Split QEMU run, automate GDB debugging

run

@@ -1,36 +1,8 @@
 #!/usr/bin/env bash
 set -e
-
-# CLI handling.
-nographic=false
-while getopts n OPT; do
-  case "$OPT" in
-    n)
-      nographic=true
-      ;;
-  esac
-done
-if $nographic; then
-  extra_append='console=ttyS0'
-  extra_flags='-nographic'
-else
-  extra_append=''
-  extra_flags=''
-fi
-
-# Work.
 cd buildroot
 make BR2_EXTERNAL="$(pwd)/../kernel_module" qemu_x86_64_defconfig
 cat ../buildroot_config_fragment >> .config
 env -u LD_LIBRARY_PATH make BR2_JLEVEL="$(($(nproc) - 2))" kernel_module-rebuild all
-qemu-system-x86_64 \
-  -M pc \
-  -append "root=/dev/vda $extra_append" \
-  -drive file=output/images/rootfs.ext2,if=virtio,format=raw \
-  -kernel output/images/bzImage \
-  -m 128M \
-  -net nic,model=virtio \
-  -net user \
-  -smp 1 \
-  $extra_flags \
-;
+cd ..
+./runqemu "$@"