QEMU dev script add option parsing

aux/qemu_amd64.sh

@@ -2,4 +2,36 @@
 
 set -x
 
-qemu-system-x86_64 -M pc -m 4G -serial stdio -enable-kvm -cdrom mop3.iso -smp 4 -boot d $@
+POSITIONAL_ARGS=()
+
+QEMU_EXTRA=""
+
+while [[ $# -gt 0 ]]; do
+  case $1 in
+    --test-usb-stick-xhci)
+      QEMU_EXTRA="-drive if=none,id=usbstick,format=raw,file=$2 \
+        -usb \
+        -device qemu-xhci,id=xhci \
+        -device usb-storage,bus=xhci.0,drive=usbstick"
+      shift
+      shift
+      ;;
+    --test-pci-ide)
+      QEMU_EXTRA="-hda $2"
+      shift
+      shift
+      ;;
+    -*|--*)
+      echo "Unknown option $1"
+      exit 1
+      ;;
+    *)
+      POSITIONAL_ARGS+=("$1")
+      shift
+      ;;
+  esac
+done
+
+set -- "${POSITIONAL_ARGS[@]}"
+
+qemu-system-x86_64 -M pc -m 4G -serial stdio -enable-kvm -cdrom mop3.iso -smp 4 -boot d $QEMU_EXTRA $@