From: Daniel Jacobowitz <dan@codesourcery.com>
To: ineya ineya <ineyaa@gmail.com>
Cc: gdb@sourceware.org
Subject: Re: reconstructing process memory map from core
Date: Tue, 09 Feb 2010 22:08:00 -0000 [thread overview]
Message-ID: <20100209220815.GA14898@caradoc.them.org> (raw)
In-Reply-To: <7b8592a1002091400y5b901e90s8cb26f75c057ffab@mail.gmail.com>
On Tue, Feb 09, 2010 at 11:00:34PM +0100, ineya ineya wrote:
> But it doesn't work, gdb is trying to read something from heap, and if
> this fails, no symbols are loaded. So I was wondering why gdb needs to
> access heap? Or more generally how are symbols loaded / how is the
> process memory map reconstructed from core file?
The dynamic linker maintains a linked list of loaded shared
libraries, in the heap.
> I thought all that is needed is to have:
> - list of external function - in .dynsym I guess
> - .got from runtime
Neither of these are useful for determining shared library load
addresses. .dynsym is not useful at all; it is read-only so we can
recover it from the executable.
--
Daniel Jacobowitz
CodeSourcery
next prev parent reply other threads:[~2010-02-09 22:08 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-02-09 22:00 ineya ineya
2010-02-09 22:08 ` Daniel Jacobowitz [this message]
2010-02-10 7:06 ` ineya ineya
2010-02-10 2:41 ` Hui Zhu
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