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Re: [RFC] "info registers" is misleading
- From: Michael Snyder <msnyder at redhat dot com>
- To: Richard dot Earnshaw at arm dot com
- Cc: fnf at redhat dot com, gdb-patches at sources dot redhat dot com
- Date: Tue, 22 Jan 2002 07:44:56 -0800
- Subject: Re: [RFC] "info registers" is misleading
- References: <200201221027.KAA28112@cam-mail2.cambridge.arm.com>
Richard Earnshaw wrote:
> firstname.lastname@example.org 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.