Re: [Qemu-devel] Debugging aarch64 guest running on Foundationv8 model

[Xuebing wang]

Hi Jani,

Is below video similar to what you want? This video shows cross-debug 
armv8 linux kernel (using armv8-gdb + armv8-qemu).

http://www.youtube.com/watch?v=MLu5EzheHIM


On 02/27/2014 05:52 PM, Peter Maydell wrote:
> On 27 February 2014 09:45, Jani Kokkonen <address@hidden> wrote:
> > Hi,
> >
> > I would like to debug a Qemu guest linux kernel under Foundationv8 model and
> > I tried  the following setup:
> >
> > 1.  Foundationv8 model started with --network=nat and
> > --network-nat-ports=1234=1234 options
> > 2. In Foundationv8 model I started qemu-system-aarch64 with the command
> > line:
> >
> > ./qemu-system-aarch64  -M virt -cpu host  -kernel Image -serial stdio
> > -display none  -enable-kvm -gdb tcp::1234 -S
> >
> > 3. I start debugging the guest kernel with aarch64-linux-gnu-gdb vmlinux
> > and with target remote:1234 command.
> >
> > However when I set any breakpoint I will get error message:
> > "Cannot insert breakpoint 1.
> > Error accessing memory address 0xffffffc000636498: Unknown error -1"
> > In addition stepi or any other run related command does not work.
> You would need to implement breakpoint support for AArch64 in
> both KVM and QEMU, I think. That feature is currently not implemented.
>
> thanks
> -- PMM

--
Thanks,
Xuebing Wang