I don't follow... but I look forward to reading your blog post when it is available.
On Tue, May 8, 2018 at 6:37 PM, Philip Balister <phi...@balister.org> wrote: > On 05/08/2018 04:13 PM, Brad Hein wrote: > > Hi Philip, > > > > How do I go a out trying an alternative as you suggest? > > I have a note to do a blog post on building an aarch64 image with > OpenEmbedded, but paying work is interfering. It is fairly straight > forward the meta-raspberrypi bsp is very good. > > Philip > > > > > Thanks! > > > > [Sent from mobile device] > > > > On Tue, May 8, 2018, 6:07 PM Philip Balister <phi...@balister.org> > wrote: > > > >> I'm not that familiar wit Raspian, but my impression is that it is > >> binary compatible with the original Pi, which has no neon support. The > >> volk code didn't handle this gracefully until recently. > >> > >> That said, The Pi 3 does support neon and better. For the Pi-3, I'd use > >> something built to take advantage of the better processor. > >> > >> Philip > >> > >> > >> On 05/08/2018 11:08 AM, Brad Hein wrote: > >>> On a new Raspberry Pi 3, running Raspbian, all apt-get package updates > >>> loaded, I'm encountering an error compiling gnuradio (branch: master). > I > >>> made one modification from the default source code, and that is the > >> neonasm > >>> patch to fix a different compile error with a missing instruction on > the > >>> Pi. > >>> > >>> Has anybody encountered the ARM mode error mentioned below or know > what I > >>> can do to push past it? > >>> > >>> > >>> $ git diff HEAD~1 > >>> diff --git > >>> a/kernels/volk/asm/neon/volk_32f_x2_dot_prod_32f_a_neonasm_opts.s > >>> b/kernels/volk/asm/neon/volk_32f_x2_dot_prod_32f_a_neonasm_opts.s > >>> index e4002b8..37dcd75 100644 > >>> --- a/kernels/volk/asm/neon/volk_32f_x2_dot_prod_32f_a_neonasm_opts.s > >>> +++ b/kernels/volk/asm/neon/volk_32f_x2_dot_prod_32f_a_neonasm_opts.s > >>> @@ -43,7 +43,12 @@ volk_32f_x2_dot_prod_32f_a_neonasm_opts: > >>> vadd.f32 s15, s15, s13 > >>> vadd.f32 s15, s15, s14 > >>> bls .done @ if vector is multiple of 16 then finish > >>> - sbfx r11, r1, #2, #1 @ check alignment > >>> +@ BH > >>> > >> https://lists.gnu.org/archive/html/discuss-gnuradio/2016-01/ > msg00234.html > >>> +@ sbfx r11, r1, #2, #1 @ check alignment > >>> + mov r11,#0 > >>> + tst r1,#4 > >>> + movne r11,#15 > >>> +# BH END OF PATCH > >>> rsb r9, r8, r3 > >>> and r11, r11, #3 > >>> mov r6, r1 > >>> > >>> > >>> > >>> $ cat /etc/debian_version > >>> 8.0 > >>> > >>> > >>> $ uname -a > >>> Linux redwave 4.9.35-v7+ #1014 SMP Fri Jun 30 14:47:43 BST 2017 armv7l > >>> GNU/Linux > >>> > >>> $ gnuradio branch: master (82d0a6b) > >>> * 82d0a6b -(4 weeks ago) gr-newmod: Pylint fixes in python scripts . > >>> Swapnil Negi (HEAD, origin/master, origin/HEAD, master) > >>> > >>> > >>> > >>> Error output follows: > >>> > >>> [ 0%] Building C object > >>> volk/lib/CMakeFiles/volk_obj.dir/volk_machine_neon_hardfp_orc.c.o > >>> In file included from > >>> /home/pi/gr/gnuradio/build/volk/lib/volk_machine_neon_ > hardfp_orc.c:130:0: > >>> /home/pi/gr/gnuradio/volk/kernels/volk/volk_32fc_s32fc_ > multiply_32fc.h: > >> In > >>> function ‘volk_32fc_s32fc_multiply_32fc_neon’: > >>> > >> /home/pi/gr/gnuradio/volk/kernels/volk/volk_32fc_s32fc_ > multiply_32fc.h:282:16: > >>> warning: unused variable ‘cPtr’ [-Wunused-variable] > >>> lv_32fc_t* cPtr = cVector; > >>> ^ > >>> /tmp/ccWuy8Qj.s: Assembler messages: > >>> /tmp/ccWuy8Qj.s:7707: Error: selected processor does not support ARM > mode > >>> `rbit r4,r4' > >>> /tmp/ccWuy8Qj.s:7718: Error: selected processor does not support ARM > mode > >>> `rbit r4,r4' > >>> /tmp/ccWuy8Qj.s:7725: Error: selected processor does not support ARM > mode > >>> `rbit r4,r4' > >>> /tmp/ccWuy8Qj.s:7732: Error: selected processor does not support ARM > mode > >>> `rbit r4,r4' > >>> /tmp/ccWuy8Qj.s:7740: Error: selected processor does not support ARM > mode > >>> `rbit r4,r4' > >>> /tmp/ccWuy8Qj.s:7747: Error: selected processor does not support ARM > mode > >>> `rbit r4,r4' > >>> /tmp/ccWuy8Qj.s:7754: Error: selected processor does not support ARM > mode > >>> `rbit r4,r4' > >>> /tmp/ccWuy8Qj.s:7761: Error: selected processor does not support ARM > mode > >>> `rbit r4,r4' > >>> /tmp/ccWuy8Qj.s:7789: Error: selected processor does not support ARM > mode > >>> `rbit ip,ip' > >>> volk/lib/CMakeFiles/volk_obj.dir/build.make:2572: recipe for target > >>> 'volk/lib/CMakeFiles/volk_obj.dir/volk_machine_neon_hardfp_orc.c.o' > >> failed > >>> make[2]: *** > >>> [volk/lib/CMakeFiles/volk_obj.dir/volk_machine_neon_hardfp_orc.c.o] > >> Error 1 > >>> CMakeFiles/Makefile2:178: recipe for target > >>> 'volk/lib/CMakeFiles/volk_obj.dir/all' failed > >>> make[1]: *** [volk/lib/CMakeFiles/volk_obj.dir/all] Error 2 > >>> Makefile:160: recipe for target 'all' failed > >>> make: *** [all] Error 2 > >>> > >>> > >>> > >>> _______________________________________________ > >>> Discuss-gnuradio mailing list > >>> Discuss-gnuradio@gnu.org > >>> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio > >>> > >> > > >
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