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Re: PATCH: Support x86 pseudo registers
On Thu, Mar 11, 2010 at 9:32 PM, H.J. Lu <hjl.tools@gmail.com> wrote:
> 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.
>
A patch is posted at:
http://sourceware.org/ml/gdb-patches/2010-03/msg00435.html
--
H.J.