From: Daniel Jacobowitz <dan@codesourcery.com>
To: Mark Kettenis <mark.kettenis@xs4all.nl>
Cc: teawater@gmail.com, gdb-patches@sourceware.org, dje@google.com,
msnyder@vmware.com, eliz@gnu.org
Subject: Re: [RFA] i386 segment base support
Date: Thu, 20 May 2010 14:41:00 -0000 [thread overview]
Message-ID: <20100520125437.GU8410@caradoc.them.org> (raw)
In-Reply-To: <201005200819.o4K8JseL023478@glazunov.sibelius.xs4all.nl>
On Thu, May 20, 2010 at 10:19:54AM +0200, Mark Kettenis wrote:
> Sorry, but we still need to discuss what programming model you intend
> to support before I will consider looking at diffs.
>
> Currently, on i386, GDB supports a fully flat 32-bit model, with one
> small exception on platforms that support thread-local-storage. In
> that model you can assume that all the segment bases are 0 except for
> %gs. If that's all that people are interested in, I don't think we
> should bother with segment bases for %cs, %ds, %es, %fs and %ss.
>
> If people want to support fully segmented memory in GDB, then what you
> propose is probably not enough, at least not for 32-bit mode.
This position confuses me. Isn't "very limited support for segmented
memory" better than "no support for segmented memory"?
--
Daniel Jacobowitz
CodeSourcery
next prev parent reply other threads:[~2010-05-20 12:54 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-05-20 7:45 Hui Zhu
2010-05-20 8:40 ` Mark Kettenis
2010-05-20 12:54 ` Hui Zhu
2010-05-20 14:41 ` Daniel Jacobowitz [this message]
2010-05-20 14:44 ` Mark Kettenis
2010-05-20 15:30 ` Daniel Jacobowitz
2010-05-21 5:29 ` Hui Zhu
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