From: Jan Kratochvil <jan.kratochvil@redhat.com>
To: ligang@sunnorth.com.cn
Cc: gdb@sourceware.org
Subject: Re: register type as signed or unsigned?
Date: Wed, 11 Oct 2006 00:48:00 -0000 [thread overview]
Message-ID: <20061011004812.GA4987@host0.dyn.jankratochvil.net> (raw)
In-Reply-To: <OF31437520.76D3569B-ON48257204.0002A246-48257204.00035BFC@sunnorth.com.cn>
On Wed, 11 Oct 2006 02:37:57 +0200, ligang@sunnorth.com.cn wrote:
> Daniel Jacobowitz <drow@false.org> wrote on 2006-10-10 20:50:02:
...
> > No; in fact, it doesn't make much difference. You should use whichever
> > is "more natural" for your target instruction set; it will affect
> > "print $reg" and "info reg".
>
> That is to say, whether builtin_type_int32 or builtin_type_uint32 is
> correct for GDB.
If the register is used as address, use "uint32".
If it is used for general computation incl. offsets in memory, use "int32".
"uint32" should be IMO a safer bet but sometimes you may need `(int)$regname'.
> Would you please give me some more hints?
You may check the recent thread being affected by such register typing:
http://sourceware.org/ml/gdb-patches/2006-09/msg00191.html
Failed now to simulate it on 32-bit only gdbhost/inferior.
Regards,
Jan
next prev parent reply other threads:[~2006-10-11 0:48 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-10-10 8:37 ligang
2006-10-10 12:50 ` Daniel Jacobowitz
2006-10-11 0:35 ` ligang
2006-10-11 0:48 ` Jan Kratochvil [this message]
2006-10-11 1:11 ` Paul Koning
2006-10-11 2:06 ` Daniel Jacobowitz
2006-10-11 7:00 ` Mark Kettenis
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