From: Daniel Jacobowitz <drow@false.org>
To: Christophe LYON <christophe.lyon@st.com>
Cc: gdb@sources.redhat.com
Subject: Re: dwarf2 frame unwinder assumptions on SP
Date: Mon, 11 Jul 2005 14:51:00 -0000 [thread overview]
Message-ID: <20050711145053.GA29229@nevyn.them.org> (raw)
In-Reply-To: <42D285AB.9E36C062@st.com>
On Mon, Jul 11, 2005 at 04:43:55PM +0200, Christophe LYON wrote:
>
> Hi all,
>
> I am working on the connection of the dwarf2 frame unwinder
> to our GDB port, and I have trouble with some assumptions
> made by GDB about SP.
>
> Currently, in my x-tdep.c I have:
> set_gdbarch_unwind_pc(gdbarch, x_unwind_pc);
> frame_unwind_append_sniffer (gdbarch, dwarf2_frame_sniffer);
It sounds like you need to set a "frame base" sniffer also, other than
the dwarf one. The dwarf2 frame unwinder does not set anything related
to the "frame base" used by symbolic debug information; it only unwinds
the stack pointer as best it can.
Does "print $sp" work correctly when unwinding?
--
Daniel Jacobowitz
CodeSourcery, LLC
next prev parent reply other threads:[~2005-07-11 14:51 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-07-11 14:44 Christophe LYON
2005-07-11 14:51 ` Daniel Jacobowitz [this message]
2005-07-11 15:33 ` Christophe LYON
2005-07-11 15:47 ` Daniel Jacobowitz
2005-07-11 15:58 ` Christophe LYON
2005-07-11 16:03 ` Daniel Jacobowitz
2005-07-11 17:02 ` Richard Henderson
2005-07-11 17:06 ` Daniel Jacobowitz
2005-07-11 19:47 ` Mark Kettenis
2005-07-12 14:05 ` Christophe LYON
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