Re: [PATCH 0/2] gdbstub: don't crash if no gdb attached and gdb syscall attempted

[Peter Maydell]

On Thu, 26 May 2022 at 20:00, Peter Maydell <peter.maydell@linaro.org> wrote:
>
> This patchset fixes a couple of bugs reported by
> Liviu Ionescu related to semihosting syscall handling.
>
> Firstly, if the user sets up the gdbstub but doesn't connect a gdb
> (ie passes '-s' but not '-S'), and we try to use gdb for semihosting
> syscalls (either because the user explicitly set target=gdb or else
> via autodetection) then we currently segfault.  This patch adjusts
> the behaviour so that "gdbstub initialized but no gdb attached to a
> vCPU" is treated the same way we already treat "gdbstub not
> initialized".
>
> Secondly, we weren't handling commandlines where
> --semihosting-config appears multiple times: these ought to be
> merged together but instead we were effectively ignoring
> all but the last one.
>
> thanks
> -- PMM
>
> Peter Maydell (2):
>   gdbstub: Don't use GDB syscalls if no GDB is attached
>   semihosting/config: Merge --semihosting-config option groups

I'll take these via target-arm.next.

thanks
-- PMM