> Nicholas Piggin <[email protected]> wrote:
>
> The final part of the reverse step and break handling is to bring
> the machine back to a debug stop state. gdb expects a response.
>
> A gdb 'rsi' command hangs forever because the gdbstub filters out
> the response (also observable with reverse_debugging.py avocado
> tests).
>
> Fix by setting allow_stop_reply for the gdb backward packets.
Ah, it's interesting that [1] doesn't include 'bc' and 'bs' in the list
of cmds that may respond with a stop-reply packet:
"The 'C', 'c', 'S', 's', 'vCont', 'vAttach', 'vRun', 'vStopped', and
'?' packets can receive any of the below as a reply."
But their definitions at [2] do say the following:
'bc' (and 'bc')
[...]
Reply: See Stop Reply Packets, for the reply specifications.
So I guess the list from [1] is not exhaustive. Anyway, thanks for the
fix!
Acked-by: Matheus Tavares Bernardino <[email protected]>
[1]:
https://sourceware.org/gdb/onlinedocs/gdb/Stop-Reply-Packets.html#Stop-Reply-Packets
[2]: https://sourceware.org/gdb/onlinedocs/gdb/Packets.html#Packets
