From: Michael Snyder <msnyder@redhat.com>
To: Richard.Earnshaw@arm.com
Cc: fnf@redhat.com, gdb-patches@sources.redhat.com
Subject: Re: [RFC] "info registers" is misleading
Date: Tue, 22 Jan 2002 07:49:00 -0000 [thread overview]
Message-ID: <3C4D88F8.75EE@redhat.com> (raw)
In-Reply-To: <200201221027.KAA28112@cam-mail2.cambridge.arm.com>
Richard Earnshaw wrote:
>
> msnyder@redhat.com said:
> > This is an old old issue. The frame pointer register is special.
> > Info registers does not show the actual value of the fp register -- it
> > shows the virtual frame pointer (the address of the function's stack
> > frame). Usually it's the same value -- unles you're in a frameless
> > function (ie. one that does not use the frame pointer register).
>
> > Now that we have pseudo-registers, we've talked about adding a
> > pseudo-frame-pointer register and using it for FP_REGNUM, so that the
> > "real" frame pointer register can always display its real value.
>
> Indeed. It isn't even confined to Thumb code.
It isn't even confined to ARM code. It's true for all architectures.
next prev parent reply other threads:[~2002-01-22 15:49 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-01-21 22:51 Fred Fish
2002-01-21 23:13 ` Michael Snyder
2002-01-22 2:46 ` Eli Zaretskii
2002-01-22 5:47 ` Richard Earnshaw
2002-01-22 7:23 ` Andrew Cagney
2002-01-22 4:09 ` Richard Earnshaw
2002-01-22 7:49 ` Michael Snyder [this message]
2002-01-22 7:21 ` Andrew Cagney
2002-01-22 7:44 Michael Elizabeth Chastain
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