Pwndbg: Add xuntil command from peda

[disconnect3d]

xuntil -- Continue execution until an address or function

e.g. xuntil <expr> where expr is an address/symbol; as a result we want an one time breakpoint + continue with given arguments.

I think we can also extend it with running the program if it is not started yet.

[ysf]

Is this needed with break_on_next(address) and break_next_call ? Or is this required for PEDA compatibility?

[disconnect3d]

I was asked to add this. Not sure what do you ask by:

Is this needed with break_on_next(address) and break_next_call

I guess this functionality might use one of those functions

[alissonbezerra]

I'd like to take care of it as a first contribution.

[disconnect3d]

@alissonbezerra That's great! If you need any help feel free to write here or e.g. on freenode irc #pwndbg (or PM me there - disconnect3d).

[stnevans]

Looks like this can be closed. If anyone thinks this should be reopened, feel free.