[PATCH RESEND] gdb/hppa: guess g packet size

[Simon Marchi]

On 2025-11-03 16:39, Sven Schnelle wrote:
> Tom Tromey <tom@tromey.com> writes:
> 
>>>>>>> "Sven" == Sven Schnelle <svens@stackframe.org> writes:
>>
>> Sven> With qemu supporting 64 bit now, add some code to determine the
>> Sven> register size of a hppa remote target.
>>
>> Thanks for the patch.
>>
>> Sven> +struct target_desc *hppa_tdesc32;
>> Sven> +struct target_desc *hppa_tdesc64;
>>
>> These should be 'static'.  They can also just be objects, not pointers,
>> I think.
> 
>> Sven> +  hppa_tdesc32 = allocate_target_description ().release ();
>> Sven> +  set_tdesc_property (hppa_tdesc32, PROPERTY_GP32, "");
>> Sven> +
>> Sven> +  hppa_tdesc64 = allocate_target_description ().release ();
>> Sven> +  set_tdesc_property (hppa_tdesc64, PROPERTY_GP64, "");
>>
>> The reason I suggested using objects and not pointers is that, although
>> we do have a number of calls to .release() in gdb, we somewhat try to
>> avoid them.
> 
> I might of course be wrong because i don't know the code well, but
> struct target_desc is declared in target-description.c and in the
> tdep file it's only used as opaque type. So it can't be used as object
> because the size isn't known. Is this correct, or am i misreading the
> code?

It seems you're right.  My suggestion would perhaps be to make the
global (well, static) objects of type `target_desc_up`, you won't need
the release then.

Simon