runqemu factor archs more

runqemu

@@ -43,45 +43,47 @@ done
 shift "$(($OPTIND - 1))"
 extra_flags="$extra_flags $@"
 
-images_dir='buildroot/output/images'
+buildroot_out_dir='./buildroot/output'
+images_dir="$buildroot_out_dir/images"
+qemu_common="\
+$debug_qemu \
+$buildroot_out_dir/host/usr/bin/qemu-system-$arch \
+-m 128M \
+-monitor telnet::45454,server,nowait \
+-net user \
+-smp 1 \
+"
 case "$arch" in
   x86_64)
-      if $kgdb; then
-        extra_append="$extra_append kgdboc=ttyS0,115200"
-      fi
-      cmd="$debug_qemu ./buildroot/output/host/usr/bin/qemu-system-x86_64 \
-        -M pc \
-        -append 'root=/dev/vda $extra_append' \
-        -device edu \
-        -drive file=${images_dir}/rootfs.ext2,if=virtio,format=raw \
-        -kernel ${images_dir}/bzImage \
-        -monitor telnet::45454,server,nowait \
-        -m 128M \
-        -net nic,model=virtio \
-        -net user \
-        -smp 1 \
-        $extra_flags
-      "
-    ;;
+    if $kgdb; then
+      extra_append="$extra_append kgdboc=ttyS0,115200"
+    fi
+    cmd="$qemu_common \
+      -M pc \
+      -append 'root=/dev/vda $extra_append' \
+      -drive file=${images_dir}/rootfs.ext2,if=virtio,format=raw \
+      -kernel ${images_dir}/bzImage \
+      -net nic,model=virtio \
+      $extra_flags
+    "
+  ;;
   arm)
     if $kgdb; then
       extra_append="$extra_append kgdboc=ttyAMA0,115200"
     fi
-    cmd="qemu-system-arm \
+    cmd="$qemu_common \
       -M versatilepb \
       -append 'root=/dev/sda $extra_append' \
       -drive file=${images_dir}/rootfs.ext2,if=scsi,format=raw \
       -dtb ${images_dir}/versatile-pb.dtb \
       -kernel ${images_dir}/zImage \
-      -m 128M \
-      -monitor telnet::45454,server,nowait \
       -net nic,model=rtl8139 \
-      -net user \
       -serial stdio \
-      -smp 1 \
-      $extra_flags"
-    ;;
+      $extra_flags
+    "
+  ;;
 esac
+echo "$cmd"
 if "$debug" && ! "$nographic" && [ ! "$arch" = 'arm'  ]; then
   eval "$cmd" &>/dev/null &
   # TODO: Ctrl +C gets sent to QEMU? Why? Does not happen if I run