From: Daniel Jacobowitz <drow@false.org>
To: qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] Re: Debugging with paging enabled
Date: Wed, 8 Nov 2006 18:42:26 -0500 [thread overview]
Message-ID: <20061108234226.GA13464@nevyn.them.org> (raw)
In-Reply-To: <822249722.20061109003305@kilgus.net>
On Thu, Nov 09, 2006 at 12:33:05AM +0100, Marcel Kilgus wrote:
> Leaving that aside, if I do set the breakpoint correctly at virtual
> address (e.g.) 0xC0123456 qemu will (correctly I guess) cause an
> exception for code offset 0x123456 (as CS base is 0xC0000000). GDB
> however then doesn't recognize its own breakpoint as it only remembers
> having set one at 0xC0123456, and apparently doesn't translate the
> given exception address of CS:0x123456 back to a virtual one.
Which segment is it running from at this point? Qemu may be reporting
the wrong address.
> So all in all GDB just doesn't seem to cope very well with segmented
> memory.
Correct. It doesn't know anything at all about i386 segmentation.
--
Daniel Jacobowitz
CodeSourcery
next prev parent reply other threads:[~2006-11-08 23:42 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-11-08 2:30 [Qemu-devel] Debugging with paging enabled Marcel Kilgus
2006-11-08 21:13 ` [Qemu-devel] " Marcel Kilgus
2006-11-08 22:15 ` Fabrice Bellard
2006-11-08 23:33 ` Marcel Kilgus
2006-11-08 23:42 ` Daniel Jacobowitz [this message]
2006-11-08 23:57 ` Marcel Kilgus
2006-11-09 2:24 ` Daniel Jacobowitz
2006-11-10 13:14 ` andrzej zaborowski
2006-11-10 14:31 ` Marcel Kilgus
2006-11-10 15:56 ` Paul Brook
2006-11-10 16:14 ` Marcel Kilgus
2006-11-10 17:10 ` Daniel Jacobowitz
2006-11-10 19:01 ` Marcel Kilgus
2006-11-10 19:07 ` Daniel Jacobowitz
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