gdb: stub for testing userland

Not working because cannot find, requires moving --userland to common.py

run

@@ -575,7 +575,7 @@ Path resolution is similar to --baremetal.
     parser.add_argument(
         '--userland-before', default=defaults['userland_before'],
         help='''\
-Pass these Krguments to the QEMU user mode CLI before the program to execute.
+Pass these arguments to the QEMU user mode CLI before the program to execute.
 This is required with --userland since arguments that come at the end are interpreted
 as command line arguments to that executable.
 '''

test-gdb

@@ -1,6 +1,13 @@
 #!/usr/bin/env bash
 set -eux
 for emulator in --qemu --gem5; do
+  # Userland.
+  # TODO make work.
+  #./run --arch x86_64 --background --userland add "$emulator" --wait-gdb &
+  #./run-gdb --arch x86_64 --userland add "$emulator" --test "$@"
+  #wait
+
+  # Baremetal.
   ./run --arch arm --background --baremetal add "$emulator" --wait-gdb &
   ./run-gdb --arch arm --baremetal add "$emulator" --test "$@"
   wait

userland/add.py

@@ -0,0 +1 @@
+../baremetal/add.py