--debug-vm-ex for the win

README.adoc

@@ -10149,12 +10149,20 @@ This is of course trivial since they are just regular userland programs on the h
 ./run --debug-vm
 ....
 
-Or for a faster development loop:
+Or for a faster development loop you can pass `-ex` command as a semicolon separated list:
+
+....
+./run --debug-vm-ex 'break qemu_add_opts;run'
+....
+
+which is equivalent to the more verbose:
 
 ....
 ./run --debug-vm-args '-ex "break qemu_add_opts" -ex "run"'
 ....
 
+if you ever want need anything besides -ex.
+
 Or if things get really involved and you want a debug script:
 
 ....

run

@@ -56,6 +56,14 @@ pass the given arguments to GDB on the replay.
             help='''\
 Like --debug-vm, but also source this file. Equivalent to
 --debug-vm-args='-ex "source $file"'.
+'''
+        )
+        self.add_argument(
+            '--debug-vm-ex',
+            default='',
+            help='''\
+Like --debug-vm-args, but takes as argument a semicolon separated list of
+-ex commands.
 '''
         )
         self.add_argument(
@@ -377,8 +385,10 @@ Extra options to append at the end of the emulator command line.
             self.env['tmux'] = True
         if self.env['debug_vm_rr']:
             debug_vm = ['rr', 'record']
-        elif self.env['debug_vm'] or self.env['debug_vm_args'] or self.env['debug_vm_file']:
+        elif self.env['debug_vm'] or self.env['debug_vm_args'] or self.env['debug_vm_file'] or self.env['debug_vm_ex']:
             debug_vm = ['gdb', LF, '-q', LF] + self.sh.shlex_split(self.env['debug_vm_args'])
+            for cmd in self.env['debug_vm_ex'].split(';'):
+                debug_vm.extend(['-ex', cmd, LF]);
             if self.env['debug_vm_file'] is not None:
                 debug_vm.extend(['-ex', 'source {}'.format(self.env['debug_vm_file']), LF])
             debug_vm.extend(['--args', LF])