Re: PATCH: Support x86 pseudo registers

H.J. Lu
2010-03-12T05:32:10Z

On Thu, Mar 11, 2010 at 8:23 PM, Pedro Alves <pedro@codesourcery.com> wrote:
> On Wednesday 03 March 2010 17:33:21, Eli Zaretskii wrote:
>>  * X86 general purpose registers
>>
>>    GDB now supports reading/writing byte, word and double-word x86
>>    general purpose registers directly.  This means you can use, say,
>>    $ah or $ax to refer, respectively, to the byte register AH and
>>    16-bit word register AX that are actually portions of the 32-bit
>>    register EAX or 64-bit register RAX.
>>
>
> I just realized that this change means that $sp is now just
> a 16-bit word of $esp, instead of a pseudo-register resolving to
> either $esp/$rsp (32-bit/64-bit).  I can't say it is actually wrong to
> have it that way, but, I think this should at least be mentioned in
> NEWS, if not in the manual too, because it can catch people
> by surprise.
>

I think we should treat sp as a special case here and not to make
it 16bit.

--
H.J.