This is the mail archive of the
gdb-patches@sourceware.org
mailing list for the GDB project.
Re: [PATCH] ARM: Do not use FP reg when on AAPCS
- From: Kevin Buettner <kevinb at redhat dot com>
- To: gdb-patches at sourceware dot org
- Cc: Marius Muench <munch at eurecom dot fr>
- Date: Tue, 23 Oct 2018 10:16:49 -0700
- Subject: Re: [PATCH] ARM: Do not use FP reg when on AAPCS
- References: <b2ceb6fd-5df8-4d91-d2e9-1aea26047480@eurecom.fr>
On Tue, 23 Oct 2018 15:03:39 +0200
Marius Muench <munch@eurecom.fr> wrote:
> Hi all,
>
> GDB tries to dereference the frame pointer in arm_scan_prologue as a
> last resort to create frame information.
> However, the more recent AAPCS ABI does not make use of a frame pointer.
>
> This patch checks whether the specified arm_abi is AAPCS before
> dereferencing the "frame pointer". If so, just return as efforts to use
> it for restoring frame information won't work.
>
> Cheers,
> Marius
>
> gdb/ChangeLog
> 2018-10-23 Marius Muench <marius.muench@eurecom.fr>
>
> * arm-tdeb.c (arm_scan_prologue): Don't dereference FP reg
> when on aapcs.
Typo on filename above. (s/tdeb/tdep/) While you're changing it,
please capitalize AAPCS too.
Otherwise, okay.
Kevin