Bug#870622: ffmpeg: autopkgtest SIGBUS on armhf with binutils 2.29

[Jiong Wang]

Hi,

   This issue is caused by a recent change in ARM assembler included 
since Binutils 2.29.

   The details of that change can be found at 
https://sourceware.org/bugzilla/show_bug.cgi?id=21458

   The semantics of ADR has changed.  In general, the address generated 
by ADR will guarantee the LSB be set if it's a thumb function address.

    I noticed h264idct_neon.S is using something like:

adreq lr,X(ff_h264_idct_add_neon) +CONFIG_THUMB

    As ADR now will set the LSB automatically, you don't need 
CONFIG_THUMB any more.

    I think h264idct_neon.S needs to be updated, and the modification 
should make sure it works with both old Binutils and the new one.

Regards,
Jiong

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.alioth.debian.org/pipermail/pkg-multimedia-maintainers/attachments/20170804/dda0e85e/attachment.html>