From: Andrew Cagney <ac131313@cygnus.com>
To: Eli Zaretskii <eliz@is.elta.co.il>,
muller@cerbere.u-strasbg.fr, autophile@starband.net
Cc: gdb@sources.redhat.com, cgf@redhat.com
Subject: Re: [Q] Accessing fs:0 on x86 Linux?
Date: Sat, 15 Dec 2001 10:04:00 -0000 [thread overview]
Message-ID: <3C1B9099.5020306@cygnus.com> (raw)
In-Reply-To: <1438-Sat15Dec2001193204+0200-eliz@is.elta.co.il>
> I looked into this issue when GDB 5.1 was in the last stages of
> development, but eventually decided that GDB lacked some
> infrastructure to add such a functionality. You could find the
> traces of that in a thread "Re: 8 bit read"; start reading here:
>
> http://sources.redhat.com/ml/gdb/2001-07/msg00338.html
Can I suggest playing with the @<blah> prefix operator that Michael
Snyder recently added.
It added a framework for specifying something like ``(int @code *)0''.
This indicates a pointer in the code space. The intent is for the
mechanism to be extended to support more than just code and data spaces.
An initial pass at this would have:
(@fs*)0
One possible follow-on would be to change $fs's type to ``(uint8 @fs
*)'' so that ``x/b $fs + 5'' did the right thing.
I should note that the current implementation is restricted to just
@code and @data so some ground work would be needed.
Andrew
next prev parent reply other threads:[~2001-12-15 18:04 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-12-13 16:55 Robert Baruch
2001-12-14 0:38 ` Pierre Muller
2001-12-14 7:53 ` Robert Baruch
2001-12-15 9:33 ` Eli Zaretskii
2001-12-15 10:04 ` Andrew Cagney [this message]
2001-12-16 0:15 ` Eli Zaretskii
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