From: "gdb guy" <gdb.guy1@gmail.com>
To: "gdb guy" <gdb.guy1@gmail.com>, gdb <gdb@sourceware.org>
Subject: Re: Why won't gdb stop on packed (UPX) file breakpoint at entrypoint?
Date: Wed, 26 Mar 2008 21:14:00 -0000 [thread overview]
Message-ID: <d662e0a00803261409mddd49e9m3ce87eb6ef8b31e5@mail.gmail.com> (raw)
In-Reply-To: <20080326210050.GA12885@caradoc.them.org>
I get the following error.
(gdb) x/2i 0xc07fd0
0xc07fd0: Cannot access memory at address 0xc07fd0
Gary Guy
On Wed, Mar 26, 2008 at 5:00 PM, Daniel Jacobowitz <drow@false.org> wrote:
> On Wed, Mar 26, 2008 at 04:57:02PM -0400, gdb guy wrote:
> > (gdb) b *0xc07fd0
> > Breakpoint 1 at 0xc07fd0
> > (gdb) r
>
> Known bug (well, sort of a bug, sort of a feature) in GDB. Use x/2i
> 0xc07fd0 and set the breakpoint at the second instruction.
>
> > Also, just for my own benefit, and those who google after me, on GDB
> > 6.3 (which I have on another older VM) what does DSO stand for when it
> > says "Loading system supplied DSO at 0xc00000"?
>
> Dynamic Shared Object. Google for vDSO.
>
> --
> Daniel Jacobowitz
> CodeSourcery
>
next prev parent reply other threads:[~2008-03-26 21:09 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-03-26 21:09 gdb guy
2008-03-26 21:11 ` Daniel Jacobowitz
2008-03-26 21:14 ` gdb guy [this message]
2008-03-26 21:18 ` Daniel Jacobowitz
2008-03-26 21:22 ` gdb guy
2008-03-26 22:36 ` Daniel Jacobowitz
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