[RFA 3/5] Prec: x86 segment register support: target

[Doug Evans]

On Mon, Mar 22, 2010 at 11:04 AM, Eli Zaretskii <eliz@gnu.org> wrote:
>> Date: Mon, 22 Mar 2010 10:53:35 -0400
>> From: Daniel Jacobowitz <dan@codesourcery.com>
>> Cc: teawater@gmail.com, msnyder@vmware.com, gdb-patches@sourceware.org,       hjl.tools@gmail.com
>>
>> On Mon, Mar 22, 2010 at 03:33:55PM +0100, Mark Kettenis wrote:
>> > Sorry, but I don't think adding these xx_base registers is a good
>> > idea.  They are not acrhitected registers so they don't beling in the
>> > list of registers.
>>
>> What do you suggest instead?
>
> Would a separate command fit the bill?  (The DJGPP build already has
> something similar, see "info dos ldt" and its description in the
> manual with an example of how to use it to display the DS segment base
> address and limit.)

I'd have the regs in a separate info command (out of "info regs"),
there's more than just base, there's the limit and flags regs too, and
having them would really reduce the S/N ratio of "info reg", but
having $gs_base, et.al. usable in expressions is really useful (and
long overdue).  Either that or make "gs:<offset>" as an address work -
you'd still want to be able to fold it to a "flat" address though.