Re: [PATCH v4 0/2] target/arm: Added support for SME register exposure to GDB

["Philippe Mathieu-Daudé" <philmd@linaro.org>]

Cc'ing Gustavo.

On 22/7/25 22:14, Vacha Bhavsar wrote:
> The QEMU GDB stub does not expose the ZA storage SME register to GDB via
> the remote serial protocol, which can be a useful functionality to debug SME
> code. To provide this functionality in Aarch64 target, this patch registers the
> SME register set with the GDB stub. To do so, this patch implements the
> aarch64_gdb_get_sme_reg() and aarch64_gdb_set_sme_reg() functions to
> specify how to get and set the SME registers, and the
> arm_gen_dynamic_smereg_feature() function to generate the target
> description in XML format to indicate the target architecture supports SME.
> Finally, this patch includes a dyn_smereg_feature structure to hold this
> GDB XML description of the SME registers for each CPU.
> 
> Furthermore, this patch series increases the value of MAX_PACKET_LENGTH
> to allow for remote GDB debugging of the ZA register when the vector
> length is maximal.
> 
> Signed-off-by: Vacha Bhavsar <vacha.bhavsar@oss.qualcomm.com>
> 
> Vacha Bhavsar (2):
>    target/arm: Increase MAX_PACKET_LENGTH for SME ZA remote gdb debugging
>    target/arm: Added support for SME register exposure to GDB
>