Aligned operations mismatch

Mikhail Svetkin mikhail.svetkin at gmail.com
Thu Aug 23 18:32:02 UTC 2018


Yes, I use the legacy network stack (I did not know it is legacy, Do you
have any plans to remove it from source?).

I will create the ticket and I will send the patch.

Best regards,
Mikhail


On Thu, 23 Aug 2018 at 07:33, Sebastian Huber <
sebastian.huber at embedded-brains.de> wrote:

> On 23/08/18 07:29, Sebastian Huber wrote:
> > Hello,
> >
> > On 22/08/18 16:49, Mikhail Svetkin wrote:
> >> Hi all,
> >>
> >> I have found a problem with assembler code generation in network
> >> stack on ARM processor (aligment fault).
> >>
> >> I am using:
> >> arm-rtems5-gcc (GCC) 7.2.0 20170814 (RTEMS 5, RSB
> >> a6d011e028a0776cedf0823940eb882e917a44e5, Newlib 2.5.0.20170922)
> >>
> >> The compiler generates invalid instruction 'ldmia' here
> >> (
> https://git.rtems.org/rtems/tree/cpukit/libnetworking/netinet/udp_usrreq.c#n160
> ).
> >>
> >> The instruction does not support unaligned accesses.
> >>
> >> Also i have found the bug fix in FreeBSD repository
> >> (
> https://github.com/freebsd/freebsd/commit/6cc0e8d2a0b583db5707f811d4ebfbe1ad05e628
> )
> >
> > this is a three year old commit. Which libbsd version do you use? This
> > fix is included in the libbsd 4.11 and master branch.
> >
>
> Oh, I should have read the URL more carefully. You use the legacy
> network stack. Please open a ticket for this.
>
> --
> Sebastian Huber, embedded brains GmbH
>
> Address : Dornierstr. 4, D-82178 Puchheim, Germany
> Phone   : +49 89 189 47 41-16
> Fax     : +49 89 189 47 41-09
> E-Mail  : sebastian.huber at embedded-brains.de
> PGP     : Public key available on request.
>
> Diese Nachricht ist keine geschäftliche Mitteilung im Sinne des EHUG.
>
>
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